#Bidirectional Charging

[kp777]

By Alejandro Lazo

CalMatters

July 20, 2023

In Summary: Through bidirectional charging, owners of electric cars can sell energy to the grid or use it to power their homes. But will the technology, which is costly, become widespread?

As a historic 10-day heat wave threatened brownouts across California last summer, a small San Diego County school district did its part to help: It captured excess power from its electric school buses and sent it back to the state’s overwhelmed grid.

The seven school buses provided enough power for 452 homes each day of the heat wave, and the buses were recharged only during off hours when the grid was not strained.

California energy officials have high hopes that this new power source, called bidirectional charging, will boost California’s power supply as it ramps up its ambitious agenda of electrifying its cars, trucks and buses while switching to 100% clean energy.

Gov. Gavin Newsom called two-way charging technology a “game changer,” saying “this is the future” during a speech last September, about a week after the heat wave ended.

This year, a bill already approved by the state Senate in a 29-9 vote would require all new electric cars sold in California to be equipped with bidirectional technology by 2030. In the Assembly, two committees approved the bill earlier this month and it is now under consideration by a third.

This two-way charging has big potential — but also faces big obstacles. By 2035, California expects to have 12.5 million electric cars on the road, but it’s an open question how much California can rely on them to feed the grid. Automakers say the technology would add thousands of dollars to the cost of an electric car, and California’s utilities are still sorting out how to pay ratepayers for selling them the kilowatt hours.

Read more.

[wolfnowl]

New Jersey offers $50,000 V2B electric school bus incentive

YaY!! 🌞

[quickev]

Exploring the Latest Innovations in Electric Vehicle Charging

The adoption of electric vehicles (EVs) is on the rise globally, and as a result, the demand for efficient and accessible EV charging infrastructure has increased dramatically. To meet this growing need, innovators and industries are constantly pushing the boundaries of technology and developing cutting-edge solutions to address the challenges associated with EV charging. In this blog post, we…

[grison-in-space]

You know, we tend to think about play centered around the boundaries and interactions of power dynamics as a kink thing, but I think that's a bit short-sighted. Perhaps it's that I have mostly taught adults—which imposes a distinct but limited power dynamic on the working relationship—but I find I use play constantly to help frustrated or shy students relax, especially when relaxing about the possibility that I am particularly upset, impatient, or judgemental about their temporary struggle. Lots of smiling, careful observation of body language—if they stiffen further they're not necessarily parsing that it's play and I need to change tactics. I often make an explicit statement like "oh no, the horror, you're learning," smile as warmly as I can project, validate the frustration and point to any clear progress I see, and then ask questions about the place where they're struggling.

Trying to use cuts more to spare dashes, but the more I think about it, the more I keep coming up with examples of boundary/hierarchy play in cases of strong working relationships between established dynamics. It's not something I only engage in from top down, either: I also offer play gestures around boundaries to people who are supervising me, if and only if I otherwise like and trust them enough to do so.

Often students will engage in mock boundary pushing at "boundaries" that they have observed that I don't give a shit about, like the time one of my students was asked to explain why his DNA signature was "found" on a broken pipette in genetics class (implied: he was being charged with breaking it as part of an exercise in interpreting DNA fingerprinting data) and he submitted a two page legal brief with fully referenced case law mock accusing the class of stealing his genetic material without a warrant. (I was delighted. I often think fondly of that student, who had been enlisted military and clearly enjoyed play mocking the "brass," but was also absolutely respectful and engaged when it actually mattered.)

I see that with my dogs, too. For example, yesterday I observed Tribble catch my eye, start briefly digging in the garden—a behavior I pointedly discourage and have for most of her life—wiggle, and then take off to race around the yard while I stomped after her and pretended to be mad until she bounced up to the door and requested to come inside. (She was almost certainly getting cold.)

It's always risky to make inferences about animal signals and especially intentionality without good falsifiable hypotheses about what is being intentionally conveyed and unpacked, so just to be specific: she wiggled using very loose body language of the kind that we usually use when playing as we made eye contact, dug until I made an exaggerated outrage face and took a step towards her, and sprinted away to zoom around the yard in a way that a nearly thirteen year old dog generally does not do unless she has a strong, motivated point to make. I was also using exaggerated play versions of outrage: mock stomping my feet with big steps with no stiffness, waving my head from side to side in a gesture I make when playing with animals, a very offended high pitched "oh!" noise I don't make when I'm actually annoyed. Play around mock offense over a mock transgressed boundary, taking delight in each other's attention.

And I mean, she and I have known each other for almost twelve years. This is the dog I accidentally trained using only my idiosyncratic body language for cues; she never bothered to listen for vocal cues until Tay tried to ask her for things with slightly different hand signals and she was bewildered. We're both pretty good at reading each other at this point.

I just think there is a strong tendency to carve out hierarchy and boundaries as Very Serious Business all the time, especially when we are thinking about ethical power dynamics. But it's not always, not even close: ethical play across boundaries should be consensual and bidirectional (even if the social hierarchy isn't entirely consensual, as with parent/child or dog/handler relationships), and if it's not it should cease. We've all seen the mortification of bosses who attempt play with subordinates who are Not Enjoying Themselves, right? You've all seen The Office?

I'm just enjoying thinking about boundaries and hierarchies in this way this morning. We (by virtue of the fact that you're interacting with me on the Anglophone Internet, anyway) live in a culture that finds hierarchy and explicitly acknowledged power dynamics really distasteful and uncomfortable, but those dynamics are still real and they absolutely exist. As someone who has some distinct scars from people who had power over me but wanted to pretend that we were peers when that was convenient, I think there's something valuable about acknowledging how much play can be held in a healthy, solid nonsexual relationship that still has power dynamics and firm boundaries.

[rjzimmerman]

Excerpt from this story from EcoWatch:

Sunrun, a solar company, and Baltimore Gas and Electric Company (BGE), the largest utility provider in Maryland, have launched a pilot program for a bidirectional power plant fueled by solar energy and EV technology.

The pilot, which involves three households, allows users to draw energy from a Ford F-150 Lightning electric truck when paired with the Ford Charge Station Pro and Home Integration System sold by Sunrun. This setup lets the household utilize energy from the EV during peak energy demand, Smart Energy International reported.

The pilot program is the first vehicle-to-home power plant in the U.S. and was funded with grants from the U.S. Department of Energy.

“This program is a significant proof of concept — no other market player has done this — and the goal is to expand these programs all around the country,” Sunrun CEO Mary Powell said in a press release. “This exciting partnership lays the foundation for the power grid of the future where electric vehicle owners can contribute to grid resiliency and utility price stability for everyone. The summer heat can be especially stressful on our power grid, which is why proving the use of stored energy in electric vehicles for capacity is so important.”

The process works by sending energy from the EV batteries to the homes, allowing the vehicle batteries to operate as energy storage. This can complement solar energy sources as well as reduce demand on Maryland’s power grids during peak times. The bidirectional power provided through the charging station can power homes for up to 10 days in the event of an outage, Sunrun said.

For the pilot program, the trucks share energy from 5 p.m. to 9 p.m. on weekdays from June 1 to September 30. The pilot is offering an estimated $800 to participants.

Currently, there are only a limited number of EV models that offer the bidirectional charging feature, including the Nissan Leaf, the 2024 Ioniq 5 and Ioniq 6 models from Hyundai, Kia’s EV6, EV9 and Niro EV, and the Ford F-150 Lightning, Cars.com reported.

More vehicles are expected to introduce bidirectional charging in the coming years, including all GM and Tesla EV models, CNET reported.

Sunrun and BGE are planning to expand the program after monitoring the pilot and will offer incentives for F-150 Lightning owners to join, helping increase grid resilience. The program could also help contribute toward Maryland’s goal to reach net-zero emissions by 2045 and achieve 100% clean electricity by 2035.

[e-carlease]

In terms of the car shown. The Volkswagen ID.5 COUPE 150kW Style Pro Performance 77kWh 5dr Auto Pure Electric vehicle, this is based on the following configuration:

Glacier white Metallic Paint

Art velours microfleece cloth - Soul black/Platinum grey

19" Hamar alloy wheels

Type 2 charging cable

This has a usable battery of 77 kWh which offers 150kW (201hp), top speeds of 99mph and 0-62 times of 8.4 seconds. Real-world ranges suggest a combined 225 miles in colder weather with warmer temperatures to allow for 305 miles (on a full charge) - a combined 265 miles. The 11kW AC allows for 0-100% charging times of 8 hour and 15 minutes with the 143 kW DC enabling 10-80% in 27 minutes. The ID.5 has no Bidirectional charging. It has a 139 mpg equivalent, 549L cargo volume and offers towing capacities of 750kg (unbraked) and 1000kg (braked). This is a RWD option; and   

[onefourty445]

merry christmas!!! as a present do you think you could maybe share another snippet of the maxosvar christmas fic 😌 have a good day 🫶🏼

Hi!!! Merry Christmas!

And yes I can haha! Sorry for not finishing it in time but I also caught a cold so… I’ll try to get it done soon! Currently it sits at 20k and I’m about 80% done…

Here you go 😉 silly little coming out moment for our boys

Max doesn’t say anything, just bites into his lip, continuing the nodding. The silence descends awkwardly, like there’s something both of them want to say, they just don’t know how to. Oscar can’t take it, he needs to break it, needs to make Max talk.

Hearing his voice always makes him feel a little better about everything, anyways.

“I’m gay,” rushes out of his mouth, his eyes widening immediately. He did not mean to say that, dear Jesus. He just wanted to ask about the weather, or something casual, not this–

“Good for you,” Max answers immediately, not batting an eyelash, his gaze boring into Oscar’s chocolate brown eyes.

“Yeah, right,” Oscar breathes out, staring back. The air feels charged, charged with something that makes the hair on Oscar’s arms stand up.

“I’m bi,” Max counters, just as awkwardly, just as clumsily. He scratches his knee, licks his lips in a way that makes Oscar’s skin tingle.

“Oh. That's nice,” is all Oscar can say through the oncoming mental breakdown, because what? Max is bi? Bi? Bi as in bidirectional? Bilateral? Bipolar? Bibulous? Biconvex? Binomial?

“Bi as in bisexual, mate,” Max voice breaks through the mind fog, and Oscar realises his thoughts might have been a bit loud. Damn it.

His mouth is open as he slides down and down the couch, looking anywhere but Max, Max, who is bi. Bi as in bisexual. Max who also fancies boys, Max who apparently could date boys, could–

“Just to make it clear, I am fully heterosexual,” Lando suddenly appears in the doorway, and Oscar could kiss his feet at this moment. He mutters something about checking if there are any snacks in the kitchen just as Lando sits back down on the couch with a shit-eating grin on his face, and flees upstairs to hide under his covers.

[powerfar]

Mobile Power Enhances The Wonderful Experience Of Travel

In recent years, with the changes in the concept of outdoor life and the upgrading of outdoor equipment, ascetic outdoor travel has gradually faded away. New ways of outdoor travel have emerged, especially Glamping, (luxury camping), which has become popular on ins recently, and is becoming a popular outdoor trend. If you want to have a wonderful travel experience, mobile power is undoubtedly standard.

Under the influence of this trend, more people hope to enjoy comfortable modern travel while being close to nature. Among the outdoor equipment you bring, the outdoor mobile power supply can best enhance your outdoor travel experience. After all, if you want to enjoy a quality and comfortable life outdoors, you cannot do without electricity.

With outdoor mobile power supplies, such as car refrigerators, rice cookers, camping lights, projectors, mobile phones, etc. can be used. The outdoor power supply greatly improves the quality of outdoor life, completely getting rid of the ascetic outdoor life.

However, there are many outdoor power supplies on the market today. Many people are at a loss when choosing, mainly because they don't understand outdoor power supply equipment. Therefore, regarding outdoor power supply equipment, I recommend a Powerfar outdoor power supply that can be charged by solar energy.

Beautiful appearance, convenient and easy to carry.

90° rotatable handle, storage integrated to save space, convenient and easy to carry. With reading lights, high-intensity LED professional outdoor long-range lights, SOS emergency signal lights, mainly used indoors and outdoors.

With an intelligent digital display system, it can monitor voltage, current and temperature changes in real time. Powerfar outdoor power supply can charge DC and AC to meet the needs of various equipment. Equipped with 13 interfaces including AC, DC, USB, Type-C, and car charger, it supports simultaneous power supply for multiple devices.

Various charging methods

Support mobile phone wireless charging, 10W fast charging efficiency increased by 50%, smart charging does not get hot. Type-C bidirectional input and output, rechargeable and dischargeable. PD60W fast charging protocol, suitable for a variety of models, fast charging, full automatic stop.

In addition to charging with traditional 220V, it also supports charging using the car's cigarette lighter. Although the charging in this state is not as fast as charging the Powerfar mobile power supply at home, if you charge while driving while driving, you can achieve long-distance self-driving and charging at the same time.

But the most amazing thing is that Powerfar mobile outdoor power supply also supports solar charging. A-grade monocrystalline silicon solar panels imported from Japan can generate stable power, and the charging time is about 8-15 hours. Even in the uninhabited suburbs, as long as there is sun, with Powerfar mobile power and solar charging panels, the power shortage problem can be easily solved. This way of obtaining power is cleaner and more environmentally friendly.

Seven equipment models to meet various power needs.

There are 7 models to choose from, choose the power supply device model according to the actual power consumption. They are 7 models of BS100S/BS200A/BS300S/PS300/BS500S/BS700S/BS1000S, with a minimum capacity of 40000mAh and a maximum capacity of 288000mAh. As small as a mobile phone, as large as a kettle/electric hot pot, it will provide you with the necessary "electricity" in modern life at any time!

Experience

Outdoors, when mobile phones, laptops, digital cameras, projectors and other electronic devices are short of power, a Powerfar mobile power supply can meet the power needs of each electronic device. Charging at the same time without interfering with each other.

If you want to eat delicious outdoors, cook a meal and bring a Powerfar mobile power supply device, which can also meet the power supply needs.

Finally, to sum up, if you don't know how to choose an outdoor mobile power supply, you might as well refer to this article. This article recommends you the Powerfar outdoor mobile power supply, I think it will be very suitable for you, it is convenient and easy to use. More importantly, it allows you to use electricity as conveniently as at home when you are doing outdoor activities. With Powerfar mobile power, it is very convenient to cook in the wild, watch movies, read books, hold parties, etc.

[urbtnews]

Vehicle-To-Grid (V2G) Market Size Is Likely To Reach a Valuation of Around $15.03 Billion by 2031

Vehicle-To-Grid (V2G) Market Size Is Likely To Reach a Valuation of Around $15.03 Billion by 2031Stay Trendy with URBTNews.com (Subscribe Today Free!) The Vehicle-To-Grid (V2G) Market report provides a detailed analysis of top strategies, market trends, market size, and future growth estimates. This report serves as a valuable resource for new entrants and existing stakeholders to refine their strategies and solidify their market positions. Request sample pages now: https://www.alliedmarketresearch.com/request-sample/A08446 Key factors driving growth of the vehicle-to-grid (V2G) market include rising electric vehicle demand and government initiatives for charging infrastructure development. Growing economies such as China, India, Brazil, and South Africa provide lucrative opportunities for the electric vehicle industry's growth. Additionally, increasing investment in electric vehicle infrastructure in developing countries boosts overall market growth prospects. The report profiles key players like Nissan Motor Corporation, Wallbox, Fermata Energy, and others, offering insights into their strategies. The report details the global vehicle-to-grid market segmentation based on technology, vehicle type, charging type, components, and region. This comprehensive analysis assists market players in establishing strategies aligned with the fastest growing segments and highest revenue generation. Buy now the exclusive report: https://www.alliedmarketresearch.com/checkout-final/e7d40d7c9141edc5025f96a7a95e71f1 The vehicle-to-grid (V2G) market segments include power management, software, unidirectional charging, and bidirectional charging technologies. Battery electric vehicles, plug-in hybrid electric vehicles, and fuel cell vehicles are categorized under vehicle types for market analysis. Based on region, Europe held the largest market share in 2021, expected to maintain its leadership during the forecast period. The region is also projected to achieve the fastest CAGR of 26.6% throughout the forecast period, highlighting robust market dynamics. Get customized reports with your requirements: https://www.alliedmarketresearch.com/request-for-customization/A08446 The report analyzes key global vehicle-to-grid market players using strategies like joint ventures, collaborations, and product launches. These strategies maximize foothold and prowess, providing insights into recent developments, portfolios, and operating segments in the industry. Interested in procuring the research report? Inquire before buying: https://www.alliedmarketresearch.com/purchase-enquiry/A08446 The unidirectional charging segment dominated the market share in 2021, expected to maintain its leadership through the forecast period. In contrast, the bidirectional segment is projected to achieve the fastest CAGR of 26.7% throughout the same period. Check out more related studies published by Allied Market Research: Electric Vehicle Motor Market - Link Solar Boat Market - Link Electric Two-Wheeler Lithium-Ion Battery Management System Market - Link Utility Vehicle Market - Link Electric Vehicle Market - Link Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. We do not accept any responsibility for accuracy. Read the full article

[integrating-sphere]

Learn About Surge and Lightning Surge Protection

A surge, also known as a transient voltage or spike, refers to the phenomenon of voltage exceeding the normal operating voltage for a brief moment. Essentially, a surge is a rapid voltage pulse that occurs within microseconds. Common causes of surges include the startup or shutdown of heavy equipment, short circuits, power switching, and the operation of large engines. Surges can potentially cause serious damage to electrical equipment. Therefore, products equipped with surge suppression devices can effectively absorb sudden bursts of enormous energy, protecting connected equipment from harm. The use of these protective devices significantly enhances the safety and reliability of electrical equipment. Characteristics of Surges: Surges have an extremely short duration, typically ranging from nanoseconds to microseconds. When surges occur, the amplitude of voltage and current exceeds normal values by more than double. Due to the rapid charging of input filter capacitors, the peak current of surges is much greater than the steady-state input current. To address surges, power supply designs should consider limiting the surge levels that AC switches, rectifier bridges, fuses, and EMI filtering devices can withstand. During repetitive switching processes, AC input voltage should not damage the power supply or cause fuse blowing. This phenomenon usually lasts only for a few nanoseconds to milliseconds, but its voltage and current values significantly exceed normal operating levels. Surges are widespread in distribution systems and can be considered ubiquitous. The main manifestations of surges in distribution systems include: • Voltage fluctuations: Machines and equipment automatically stop or start under normal operating conditions. • Interference with electrical devices: For example, air conditioners, compressors, elevators, pumps, or motors. • Abnormalities in computer control systems: Frequent inexplicable resets. • Frequent replacement or rewinding of motors. • Shortened lifespan of electrical equipment: Reduced lifespan due to faults, resets, or voltage issues. Surges can affect sensitive electronic devices in several ways, including: Damage: • Voltage breakdown of semiconductor devices. • Destruction of metalized layers on components. • Damage to printed circuit board traces or contact points. • Damage to bidirectional thyristors/triacs, etc. Interference: • Equipment lock-up, thyristor or bidirectional thyristor loss of control. • Partial damage to data files. • Errors in data processing programs. • Errors and failures in data reception and transmission. • Unexplained malfunctions, and more. Premature Aging: • Components aging prematurely, significantly reducing the lifespan of electronics. • Decreased output audio and visual quality. Sources of Surges: Surges can originate from both external and internal sources. Approximately 20% of surges come from external sources, primarily lightning and other system impacts. About 80% of surges come from internal sources, mainly the impact of internal electrical loads. Surge generator_SG61000-5 External surges mainly originate from lightning and include: Direct lightning strikes: Direct hits on lightning rods, lightning conductors, buildings, or refinery towers. Electromagnetic radiation from lightning: Strong magnetic fields radiate from the lightning strike point, damaging microelectronics even if the strike does not hit a building directly. Lightning-induced currents in power and signal lines. Lightning induction: Strong alternating magnetic fields form around the lightning discharge, inducing voltage on nearby metal conductors. Lightning-induced high local potentials. Lightning intrusion: Direct lightning strikes on power lines or down conductors can cause lightning overvoltages on power lines and strong electromagnetic pulses around power cables. These induced overvoltages can propagate to the input ports of equipment, causing equipment malfunction or damage. Internal surges mainly result from switching operations of electrical equipment within the power grid and other factors, including: Switching in and out of high electrical loads, such as air conditioners, compressors, pumps, or motors. Switching in and out of inductive loads. Switching in and out of power factor correction capacitors. Short circuit faults. Mechanical contacts: Mechanical switches including relay switch contacts, push-button switches, key switches, potentiometers with switches, etc. According to IEEE definitions, surges can be classified into several categories: • Pulse-type surges: Voltage ranges from several hundred volts to 20,000 volts within microseconds. • Oscillatory surges: Voltage ranges from several hundred volts to 6000 volts within microseconds to milliseconds. • Burst-type surges: Peak voltage or current of repetitive cycles. To protect electronic equipment from lightning surges, relevant immunity test standards have been established. The national standard for lightning surge immunity tests for electronic equipment is GB/T17626.5 (equivalent to international standard IEC61000-4-5). This standard mainly simulates various situations caused by indirect lightning strikes, including: • Lightning strikes on external lines, generating large currents flowing into external lines or ground resistors, resulting in interference voltage. • Induced voltage and current from indirect lightning strikes (such as inter-cloud or intra-cloud lightning) on external lines. • Strong electromagnetic fields formed around objects adjacent to lightning strikes, inducing voltage on external lines. • Lightning strikes near the ground, where ground currents introduce interference through the common ground system. Additionally, the standard simulates interference introduced by switching actions in substations (voltage transients during switchgear operations), such as: • Interference generated when switching main power systems (e.g., switching capacitor banks). • Interference from minor switch toggling within the same power grid. • Interference from thyristor equipment with resonant circuits. • Various systematic faults, such as short circuits and arcing faults between equipment grounding networks or ground systems, are also simulated. The standard describes two types of waveform generators: • Waveforms induced on power lines: Narrow surge waveforms (50µs) with steep fronts (1.2µs). • Waveforms induced on communication lines: Broad surge waveforms with gentle fronts. Simulated lightning pulses induced in power lines due to lightning strikes or surge pulses caused by lightning discharge through common ground resistance. Typical parameters include open-circuit output voltage (0.5 to 6 kV), short-circuit output current (0.25 to 2 kA) for different test levels, internal resistance (2 ohms), and additional resistances (10, 12, 40, 42 ohms) for various test levels. Surge output polarity can be positive/negative, and surge output can be synchronized with the power supply with a phase shift of 0 to 360 degrees. Repetition frequency should be at least once per minute. Severity Levels of Lightning Surge Immunity Tests: • Level 1: Good protection environment. • Level 2: Environment with some protection. • Level 3: Ordinary electromagnetic interference environment, without specified special installation requirements for equipment, such as industrial workplaces. • Level 4: Environment with severe interference, such as civilian overhead lines or unprotected high-voltage substations. • Level X: Determined by agreement between the user and the manufacturer. Read the full article

[semcoinfratechworld]

Top Features of Hynn Battery Pack Testers: What Makes Them Stand Out?

The Hynn Battery Pack Tester is a cutting-edge device crucial in advancing battery technology. Its standout features cater to the evolving demands of battery testing, particularly in the context of lithium-ion batteries used in electric vehicles and consumer electronics. 

Here’s a closer look at what makes Hynn battery pack testers exceptional.

Multiple Parameters for Comprehensive Testing

One of the most significant advantages of the Hynn Battery Pack Tester is its ability to test battery capacity based on multiple parameters. This feature allows manufacturers to evaluate the performance of batteries under various operating conditions, ensuring that they meet necessary standards. The tester conducts a variety of essential tests, including charging and discharging assessments, which are vital for determining the efficiency and lifespan of batteries.

Real-World Environment Simulation

Hynn machines simulate real-world conditions by charging and discharging batteries multiple times. This environment simulation is crucial for understanding how batteries will perform in actual usage scenarios, providing manufacturers with valuable insights into the longevity and reliability of their products.

Bidirectional and Regenerative Testing

Another innovative feature of the Hynn Battery Pack Tester is its bidirectional and regenerative testing capability. This allows for energy savings by enabling the system to charge batteries and send power back to the grid during the discharging process. This feature conserves energy while contributing to overall operational efficiency, making it a sustainable choice for manufacturers.

Temperature Data Acquisition

Safety and efficiency are paramount in battery testing, and the Hynn Battery Pack Tester excels in this area with its temperature data acquisition capabilities. By monitoring temperature during charging and discharging, the tester helps assess critical safety parameters, ensuring that batteries operate within safe temperature ranges to prevent overheating.

User-Friendly Operation

Ease of use is a significant consideration for any testing equipment, and the Hynn Battery Pack Tester is designed with this in mind. Its user-friendly interface allows operators to easily control the machine using a laptop, streamlining the testing process and reducing the potential for human error.

Conclusion

The Hynn Battery Pack Tester stands out in battery testing due to its comprehensive features that enhance efficiency, safety, and usability. As the demand for high-quality batteries continues to grow, the importance of advanced testing solutions like the Hynn Battery Pack Tester cannot be overstated. By ensuring that lithium-ion battery manufacturing equipment suppliers meet rigorous quality standards while also focusing on sustainability, Hynn is helping to shape the future of battery technology.

[dorleco]

What is Bidirectional EV charging and How Does It Help Electric Vehicle Owners?

August 28, 2024

by dorleco

with no comment

Others

Edit

Introduction

Power safety shutdowns have left millions of Californians without energy to lower the state’s danger of wildfires. Many owners of electric vehicles (EVs) have been annoyed by their inability to use the electricity in their car batteries to power their houses or other important loads. Their EV batteries could store energy, but since they could only use the electricity to run their car, they could not benefit from bidirectional EV charging.

A growing number of electric vehicle (EV) owners can power heavy loads with their cars or by purchasing a wall box unit. Bidirectional charging systems have several benefits for both residential and commercial utility companies. To respond to questions from potential solar customers, one must be well-versed in the functioning of bidirectional chargers. Bidirectional electric car charging is an excellent approach to supply emergency power during a blackout without requiring batteries.

Bidirectional charging is very popular these days, and this trend will only grow as EVs become more capable. Consequently, several automakers have announced that they will supply automobiles with bidirectional capability, including Ford, Hyundai, Lucid, and Tesla.

Bidirectional EV charging: What Is It?

As the name suggests, bidirectional EV charging charges the battery and supplies electricity to other loads as needed by utilizing both the grid and the battery. An EV can help power a home, company, utility grid, other vehicle, or specific loads by utilizing bidirectional charging.

Now that the Nissan Leaf can charge in both directions, using this electricity for residential requirements requires setting up a power supply center inside the house.

The Ford 150 Lightning can provide 9.6 kW of power to a home’s electrical system for a few days. This arrangement requires Ford’s Charge Station Pro and a 100-amp circuit. Furthermore, the Hyundai Ioniq 5 and 6 have a power output of 3.6 kW.

How does it function?

A bidirectional EV charger is an advanced EV charger that can charge in both directions, as opposed to conventional unidirectional EV chargers that use AC power. Even though it looks simple enough, there is a complicated process involved in converting power from AC (alternating current) to DC (direct current).

Unlike traditional EV chargers, bidirectional EV charging converts AC to DC while charging and the other way around when discharging, much like an inverter. However, bidirectional chargers are only compatible with vehicles that can be charged in both directions using DC power. Unfortunately, there are currently very few EVs that have dual-directional charging capabilities; the most well-known example is the Nissan Leaf from later versions. Bidirectional chargers are also substantially more expensive than normal EV chargers because of their higher level of sophistication, which is achieved by using complex power conversion devices to control the energy flow to and from the automobile.

Beyond only powering a habitation, bidirectional EV chargers are equipped with technology that can manage loads and isolate a home from the grid during an outage, a procedure referred to as an island. The fundamental working principle of bidirectional EV chargers and bidirectional inverters, which have been used for backup power in home battery storage systems for more than 10 years, is extremely similar.

How Does Bidirectional EV Charging Work?

Alternating current (AC) power from the grid creates direct current (DC) voltage when the car is charging. Drivers of electric vehicles (EVs) can then use the energy stored in the battery to refuel the grid or power a dwelling. For this to happen, the electricity needs to be converted from DC to AC. Either the car’s converter or the charger itself does this.

One such product is the Wallbox Quasar, a home bidirectional DC charger. It features a CHAdeMO or CCS Type 1 connector in addition to an app with certain energy management features.

When accessible, V2G capabilities enable sustainable energy sources like solar and wind power to be used to charge the batteries of electric vehicles. Subsequently, the EV reduces greenhouse gas emissions by using its batteries to augment the grid’s power supply when not in use.

1. Vehicle to Home (V2H)

This technique allows an electric car to use its electrical panel to power a home or place of business; it’s especially helpful during a blackout. Additionally, homeowners who pay time-of-use rates could save money by using their EV battery during times of high energy demand and charging it during times of lower electricity rates.

The power control system of an EV with V2H capability must be connected to the home’s electrical distribution center for the house to receive electricity from the vehicle. After that, the car must be plugged into the charger to use electricity.

2. Vehicle To Load (V2L)

Vehicles with V2L capability come with an integrated DC-to-AC converter and a standard power outlet. By plugging in their loads, it enables customers to utilize the battery’s power. These features are found in EVs such as the Tesla Cybertruck, Hyundai Ioniq, Ford F150 Lightning, Kia EV6, and Rivian R1T.

3. Vehicle to Vehicle (V2V)

Unfortunately, EVs’ range limits how far they can go between recharging. The capacity of the EV battery, the efficiency of the car, and the ambient temperature all affect the range of the vehicle. V2V charging helps reduce range anxiety by enabling one EV to partially supply electricity to another.

What Benefits Can Bidirectional Charging Provide?

The ability to use the EV battery for other reasons can be very beneficial for utility companies and electric vehicle drivers alike. In actuality, EVs might contribute significantly to the grid’s decarbonization in the future.

1. Potential Energy Bill Savings

The price of power changes throughout the day based on demand if the local utility offers time-of-use rates. Over the summer, weekday afternoons and early evenings are when energy bills are highest and lowest, respectively, in the middle of the night. Therefore, using the grid or solar panels to deliver power during peak demand times and charging during off-peak hours is more economical.

2. Reserve Power for Outages

A few notable power outages have occurred in the last year or so, including the Texas Power Crisis in 2021 and the public safety power shutdowns in California that left millions of people without power. EVs with V2H capabilities can power an entire house during a utility outage. The capacity and state of charge of an electric vehicle’s (EV) battery determines how long and how many loads it can power a residence.

3. Not found in the Grid Energy

EVs with V2L capabilities can power specific loads by plugging into an outlet. If you’re camping or living somewhere without utility electricity, this can work out to be a good option. On construction sites, for instance, power tools can be used by artisans.

What Consequences Are There for Bidirectional EV Chargers?

While bidirectional EV charging offers many benefits, there are drawbacks as well. With more investigation, these obstacles can be addressed.

1. The Decline of EV Batteries:

Bidirectional EV charging involves repeated cycles of charge and discharge, which may shorten the total life of electric car batteries and hasten battery deterioration.

2. The Cost and intricacy:

Because it requires specific infrastructure and equipment, bidirectional EV charging increases the complexity and cost of both the electric car and the charging station.

3. Vehicles with Limited Interoperability:

All-electric vehicles can’t currently be charged in both directions using EVs. The fact that the technology is limited to compatible models of electric vehicles prevents it from being widely adopted.

4. Issues with Grid Stability:

Since vehicles that are charging in both directions can drain or return electricity at any time, the electric grid becomes more unpredictable. As a result, grid operators might find it challenging to maintain reliability and stability.

5. Concerns about Regulation and Standardization:

The absence of established standards and procedures for bidirectional charging could make it more difficult for different charging stations to communicate with one another and prevent the widespread use of electric vehicles.

6. Losses of Energy:

During the conversion and transfer process from the electric vehicle to the grid, energy is lost. When compared to unidirectional charging, this lowers the overall efficiency of bidirectional charging.

Which Electric Cars Are Dual-Charging Capable?

Bidirectional EV charging is only included in a tiny portion of EVs sold in the US; vehicle-to-grid charging is the most common. These vehicles have two-way charging installed:

Ford Lightning (V2H, V2V, and V2G versions)

Genesis GV60 (V2L)

V2L Hyundai Ioniq 5

V2L Hyundai Ioniq 6

Kia EV6 (V2L)

Kia Niro (V2L)

Air Lucid (V2V)

The V2L Mitsubishi Outlander PHEV

Leaf from Nissan (V2H, V2G)

V2L Tesla Cybertruck

VW ID.4 (V2H)

FAQs about Dual-Way Power Supply

Continue reading to get the answers to some of the most common questions about EV two-way charging.

What benefits does bi-directional charging offer EV drivers?

Bidirectional charging provides electric car owners with power, converting their vehicles into flexible energy sources. In addition to standard charging, this technology enables owners to potentially make money by selling extra energy back to the grid. Because of bidirectional EV charging, electric cars can also momentarily powerhouses or other EVs during emergencies.

Do all-electric vehicles have bi-directional EV chargers installed?

No, not all-electric vehicles on the road now are equipped with bidirectional EV charging. Compatibility is determined by the car’s design and whether or not it has the necessary hardware and software for two-way energy transfer.

What issues do EV batteries encounter when charging in both directions?

Bidirectional charging may reduce the overall lifespan of batteries used in electric vehicles by speeding up battery degradation because it increases the frequency of charge and discharge cycles. An EV battery’s longevity will only be materially impacted by heavy, regular use; in other cases, battery degradation is insignificant.

Can bi-directional EV chargers take the place of solar batteries?

While electric automobiles can store excess energy for use at home thanks to bidirectional charging, solar batteries are still required in some circumstances. The primary battery used in bidirectional charging in vehicles may not have sufficient capacity for large-scale energy storage. Solar batteries are more suited for storing solar panel energy to create a consistent and reliable power source because they have a larger storage capacity due to their stationary design. Furthermore, EV drivers may be reluctant to completely drain their batteries during blackouts due to the possibility that it will limit their mobility.

What is true about bidirectional charging?

Bidirectional EV chargers allow power to flow in two directions, in contrast to standard EV charging systems, which only allow power to flow from a power source to the vehicle’s battery. Electric vehicles, permit energy transfer and receiving, enabling them to share power with other gadgets or even the utility grid.

The Clean Energy Sector Could Be Transformed by Two-Way Charging

The way energy is consumed could drastically change if electric vehicles can send excess energy to the grid, other cars, or homes. The dynamic and decentralized approach that is presented by the interaction between electric vehicles and the energy ecosystem has the potential to improve grid management efficiency, improve resilience in the event of an outage, and even use electric vehicles as distributed energy resources. All of these benefits will help to create a more sustainable and flexible energy landscape.

By transforming high-power DC from the fast-charging station into appropriate power levels for various battery chemistries, the DC-DC converter complies with fast-charging regulations. This aids in the VCU’s optimization of charging speed while upholding security.

The DC-DC converter helps the VCU by controlling and transforming electrical power, making sure that fast charging is handled correctly, safely, and without sacrificing the performance or safety of the vehicle.

Explore our advanced fast-charging VCU products and stay connected to cutting-edge EV software services. For more information or inquiries, feel free to reach out to us at info@dorleco.com. We look forward to serving you!

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How to Improve Quality of Life at Home with a Home wall mounted energy storage system

Table of Contents

1. Ensuring Power Security: The Best Solution for Unexpected Outages

1. Emergency Plans for Nighttime Outages

2. Power Optimization During Summer Peaks

2. Green Energy Management: The Perfect Combination of Solar Power and Energy Storage

1. Efficient Use of Solar Power

2. Energy Assurance on Cloudy and Rainy Days

3. Smart Home Integration: The Intelligent Management Hub for Future Living

1. Seamless Connection of Smart Home Devices

2. Enhancing Home Energy Efficiency

4. Conclusion

1. Ensuring Power Security: The Best Solution for Unexpected Outages

Emergency Plans for Nighttime Outages

Scenario: Imagine it's a cold winter night, and you're enjoying a cozy dinner at home. Suddenly, a strong storm hits, causing the power grid to fail, plunging your home into darkness.

Solution:

· Automatic Power Switching: The Home wall mounted energy storage system features powerful automatic switching capabilities. When the grid fails, the system quickly switches to its built-in power reserve, ensuring that essential devices in your home, such as lighting, the refrigerator, and heating systems, continue to operate for hours with its 5kWh storage capacity.

· Power Management and Monitoring: The storage system comes with real-time power monitoring. Through an intelligent management interface, you can monitor the power status at any time and prioritize power supply to essential devices. The system intelligently allocates power based on demand, ensuring that critical devices remain operational even during power shortages.

Practical Tips:

· Regular Battery Checks: Ensure that the system's batteries are in working condition. Regularly check battery health and charge status to prepare for unexpected outages.

· Set Power Prioritization: In system settings, configure the priority for device power supply, ensuring that important devices like refrigerators and heating systems receive power first during an outage.

Power Optimization During Summer Peaks

Scenario: In the scorching summer, with continuous high temperatures, your household's frequent use of air conditioning leads to a significant increase in grid load, causing voltage fluctuations that disrupt the normal functioning of home devices.

Solution:

· Grid Load Balancing: The energy storage system balances the electricity demand in your home, preventing device shutdowns due to power shortages. Equipped with a bidirectional inverter, the system stabilizes power output, ensuring the normal operation of high-energy-consuming devices like air conditioners and refrigerators during peak periods. Additionally, the system's intelligent algorithm automatically adjusts charging and discharging strategies based on power demand, optimizing power usage.

· Cost Savings: By utilizing the storage system's time-of-use settings, you can charge the batteries during off-peak hours when electricity rates are lower and discharge them during peak hours, significantly reducing household electricity costs. The system also supports intelligent power management, adjusting supply based on consumption peaks and troughs, minimizing unnecessary expenses.

Practical Tips:

· Adjust Air Conditioner Settings: During peak periods, prioritize the supply of electricity to the air conditioner through the storage system and adjust settings to reduce energy consumption.

· Monitor Electricity Cost Changes: Use the system's intelligent electricity cost analysis function to track rate changes, optimize power usage strategies, and reduce costs.

2. Green Energy Management: The Perfect Combination of Solar Power and Energy Storage

Efficient Use of Solar Power

Scenario: You have installed a solar photovoltaic system on your roof, and during the day, with abundant sunlight, you want to store this green energy for use at night or on cloudy days.

Solution:

· Daytime Charging, Nighttime Discharging: The energy storage system efficiently utilizes the electricity generated by the solar photovoltaic system, storing the excess during the day and discharging it at night or on cloudy days, ensuring continuous power supply to your home. With its 5kWh storage capacity, the system can meet a household's electricity needs for an entire night while reducing dependence on the grid.

· Intelligent Energy Scheduling: The system's intelligent scheduling function optimizes power storage and release based on electricity demand and solar power generation, enhancing energy efficiency. The system monitors power levels in real-time, intelligently adjusting charging and discharging strategies to achieve optimal energy management.

Practical Tips:

· Regular Solar Panel Cleaning: Ensure that your solar panels are clean to maintain good power generation efficiency.

· Set Charging Priorities: Configure charging priorities in the system settings to ensure optimal power storage during the day.

Energy Assurance on Cloudy and Rainy Days

Scenario: During consecutive days of cloudy or rainy weather, solar power generation decreases significantly, and you need to ensure that your home’s power supply remains unaffected.

Solution:

· Smart Power Scheduling: The energy storage system automatically draws power from the stored electricity to meet household demand. The system's intelligent power management function adjusts power allocation automatically during periods of low supply, ensuring that basic household needs are met. Additionally, the system can intelligently adjust charging and discharging strategies based on weather changes, maintaining power supply stability.

· Backup Generator Connection: If the stored power is insufficient, you can connect a backup generator to supplement the power. The system supports external backup generators, providing additional power support to ensure continuous and stable household power during extended cloudy weather.

Practical Tips:

· Monitor Weather Changes: Use the system’s weather alert function to anticipate changes and plan power usage accordingly.

· Maintain Backup Generators: Regularly check the operational status of your backup generator to ensure it starts properly when needed.

3. Smart Home Integration: The Intelligent Management Hub for Future Living

Seamless Connection of Smart Home Devices

Scenario: Your home is equipped with various smart devices, such as smart lighting systems, security systems, and home theaters, which require stable power supply to operate continuously.

Solution:

· Smart Home System Integration: The storage system seamlessly integrates with smart home platforms, allowing power scheduling and device control through a unified management interface. You can remotely monitor and manage the storage system and all connected smart devices via a smartphone app, adjusting power supply in real-time to meet device demands.

· Power Prioritization Settings: In emergencies, you can set the power supply priority of devices through the storage system, ensuring that key devices like smart locks and security cameras receive power first during an outage. The system’s multiple output ports (including AC and USB) can simultaneously supply power to multiple devices.

Practical Tips:

· Configure Smart Home Devices: In the storage system settings, configure the power supply priority of smart home devices to ensure key devices are powered first during an outage.

· Regular System Software Updates: Keep the storage system and smart home platform software up to date to ensure compatibility and the latest functionality.

Enhancing Home Energy Efficiency

Scenario: You want to enhance home energy efficiency through smart technology, reducing energy waste and lowering household electricity costs.

Solution:

· Intelligent Power Management: The storage system's smart algorithm can monitor power usage in real-time, automatically optimizing power distribution. The system can predict household power demand, prepare power reserves in advance, and shut off non-essential devices when not needed, improving overall energy efficiency.

· Energy-Saving Mode Activation: The system's energy-saving mode automatically adjusts power supply, shutting down non-essential devices to reduce energy consumption. Through intelligent power management, the system optimizes power usage, lowering household electricity bills.

Practical Tips:

· Regularly Review Power Usage: Use the system’s power analysis function to regularly review household power usage, optimizing power distribution strategies.

· Set Energy-Saving Plans: Configure energy-saving plans based on household usage habits to reduce unnecessary power consumption and improve energy efficiency.

4. Conclusion

The Home wall mounted energy storage system not only enhances the intelligence of household power management but also greatly improves the quality of life at home by providing stable power security, optimizing green energy use, and integrating with smart home devices. From responding to unexpected outages to improving home energy efficiency, this storage system offers a comprehensive solution for modern families. I hope that through this detailed analysis, you can better understand how to make full use of this storage system in your home, making it a reliable assistant in your daily life, providing stable, intelligent, and eco-friendly power security.

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But how will the new EV3 perform? As per below two battery options will be available to the UK customers:

EV3 Standard Range - (starting at around £34,000) the 55 kWh lithium-ion battery will offer 0 – 62 times of 7.5 seconds, 106 mph top speeds and 150 kW (or 201 hp). This model is a FWD option. Expect a combined winter range of 170 miles with warmer weather allowing for 230 miles - 200 miles combined. On charging, the 11 kW AC max will allow 6 hour 0 – 100% charging times with the 100 kW DC maximum allowing 32 minute 10 – 80% times. This has a cargo volume of 460L and vehicle fuel equivalent of 147 mpg. The EV3 will feature bidirectional charging - a 3.6kW AC Vehicle-to-Load (V2L). An indoor and outdoor port means you can power external devices too; and

EV3 Long Range - (starting at around £40,000) the 78 kWh lithium-ion battery will offer 0 – 62 times of 7.7 seconds, 106 mph top speeds and 150 kW (or 201 hp). This model is a FWD option. Expect a combined winter range of 235 miles with warmer weather allowing for 320 miles - 280 miles combined. On charging, the 11 kW AC max will allow 8 hour and 30 min 0 – 100% charging times with the 135kW DC maximum allowing 33 minute 10 – 80% times. This has a cargo volume of 460L and vehicle fuel equivalent of 145 mpg. The EV3 will feature bidirectional charging - a 3.6kW AC Vehicle-to-Load (V2L). An indoor and outdoor port means you can power external devices too.

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Anker’s new power station can charge faster using two USB-C adapters at the same time

A pop-up LED light on the Anker Solix C300 DC will save you from having to find a working flashlight during a power outage. | Image: Anker The new Anker Solix C300 DC includes a feature not seen on the company’s portable power stations before: although it can only be charged using a solar panel or its bidirectional 140W USB-C ports, for the first time, users can recharge it using two of those…