User blogs
Lithium Battery Packs: The Driving Force Behind Electric Mobility
The rise of electric vehicles (EVs) has brought lithium battery packs into the spotlight. These powerhouses are the heart of EVs, storing and supplying the energy that drives them. This essay explores the role of lithium battery packs in electric mobility, their advantages, challenges, and future prospects.Get more news about Lithium Battery Pack,you can vist our website!
The Heart of Electric Vehicles
Lithium battery packs are the primary energy storage units in EVs. They consist of several individual lithium-ion cells connected in series or parallel to achieve the desired voltage and capacity. These packs power everything in an EV, from the motor that propels the vehicle to the onboard electronics.
Advantages of Lithium Battery Packs
Lithium battery packs offer several advantages over traditional lead-acid batteries. They have a higher energy density, meaning they can store more energy for their size and weight. They also have a longer lifespan and can withstand more charge-discharge cycles before their performance degrades.
Safety and Management Systems
Safety is a critical concern with lithium battery packs due to the risk of thermal runaway – a chain reaction that can lead to overheating and fires. To mitigate this risk, lithium battery packs incorporate advanced Battery Management Systems (BMS) that monitor and control various parameters like temperature, voltage, and current.
Challenges and Solutions
Despite their advantages, lithium battery packs face several challenges. High manufacturing costs and concerns about the environmental impact of lithium mining are significant issues. However, ongoing research into alternative materials and recycling methods promises to address these concerns.
The Future of Lithium Battery Packs
The future looks bright for lithium battery packs. Advances in technology are continually improving their performance and reducing their cost. At the same time, growing awareness about climate change is driving demand for EVs, further fueling the market for lithium battery packs.
In conclusion, lithium battery packs are set to play a pivotal role in our transition towards sustainable transportation. As technology continues to evolve, we can expect these powerhouses to become even more efficient, affordable, and environmentally friendly.
Breakthrough EV battery pack could last 2 million kms
Chinese manufacturer Gotion High-Tech has announced a new battery pack will go into mass production in 2024 that it says will deliver range of up to 1,000kms for a single charge and could last two million kms.Get more news about Lithium Battery Pack,you can vist our website!
The company says the manganese doped L600 LMFP Astroinno will be able to do 4,000 full cycles at room temperature, and at high temperature will get 1800 cycles and over 1500 cycles of 18-minute fast charging.These incredibly high cycle numbers mean the battery could essentially last 2 million km before it starts to deteriorate. To put that into context, the average Australian car travels around 15,000 km per year so it would take 130 years worth of average driving to reach 2 million km mark.
Gotion High-Tech says the battery single-cell density is 240Wh/kg and that improvements in pack design have increased overall battery pack energy density to a point where 1000km range pack is possible with the highly durable chemistry.
“Astroinno L600 LMFP battery cell, which has passed all safety tests, has a weight energy density of 240Wh/kg, a volume energy density of 525Wh/L, a cycle life of 4000 times at room temperature, and a cycle life of 1800 times at high temperatures,” said executive president of the international business unit of Gotion High-Tech Dr. Cheng Qian.
The the volumetric cell to pack ratio has reached 76% after adopting the L600 cell, and the system energy density has reached 190Wh/kg, surpassing the pack energy density of current mass-produced NCM (Nickel Cobalt Manganese) cells.” said Dr Cheng.
“In recent years, lithium iron phosphate (LFP) technology has regained the recognition of the market with market share continuing to increase.
“Meanwhile, the energy density growth of mass-produced LFP batteries has encountered bottlenecks, and further improvement requires an upgrade of the chemical system, so manganese doped as called lithium iron manganese phosphate (LMFP) was developed.” said Dr Cheng.
According to Dr Cheng, Gotion High-Tech has solved the challenges of Mn dissolution at high temperatures, low conductivity and low compaction density through utilising co-precipitation doping encapsulation technology, new granulation technology and new electrolyte additives.
Europe’s largest battery energy storage system launched in the UK
The revolutionary battery energy storage system is located at Pillswood near Cottingham, East Yorkshire, and is the largest energy storage system of its kind by megawatt-hour (MWh).Get more news about Battery Energy Storage,you can vist our website!
The £75m facility utilises Tesla Megapack technology and will provide a pivotal storage solution that will be vital for the country’s transition from fossil fuels to renewable energy.
Peter Kavanagh, Harmony Energy Limited’s CEO, said: “We are delighted that our Pillswood Project, Europe’s biggest battery energy storage system, has been officially opened.
“Funded by Harmony Energy Income Trust, this is the first of six similar projects the Trust intends to deliver in the coming year. It is also a significant achievement for Harmony: this project is the third and largest battery energy storage project which we have developed and delivered. “
How does the battery energy storage system work?
Harmony Energy Income Trust’s battery energy storage system allows the national grid to optimise the efficiency of renewable energy sources, such as wind farms.
Renewables such as solar and wind are not constantly produced; when it is not sunny or windy, no power is generated. This means that effective energy storage systems are essential for banking energy from renewables that can be distributed when required.
The company’s energy storage facility maximises the efficiency of wind farms by reducing the time it needs to be switched off (curtailed) because of supply and demand imbalances or network limitations.
The system will enable essential balancing services to the UK’s electricity grid and help to accelerate replacing fossil fuels with renewable energy.
How much energy can be stored?
The Pillswood project is located next to the National Grid’s Creyke Beck substation, which is also the connection point proposed for phases A and B of Dogger Bank – the largest offshore wind farm in the world – set to go live this summer.
The battery energy storage system can store up to 196 MWh of electricity in a single cycle, which is enough to fuel around 300,000 homes in Yorkshire for two hours.
Kavanagh added: “Battery energy storage systems are essential to unlocking the full potential of renewable energy in the UK, and we hope this particular one highlights Yorkshire as a leader in green energy solutions.”
The company plans to develop an array of battery energy storage systems across the UK, already boasting nine projects with a total capacity of 500MW/1GWh.
Charging lithium-ion cells at different rates boosts the lifetimes of battery packs
The research, published Nov. 5 in IEEE Transactions on Control Systems Technology, shows how actively managing the amount of electrical current flowing to each cell in a pack, rather than delivering charge uniformly, can minimize wear and tear. The approach effectively allows each cell to live its best – and longest – life.Get more news about Lithium Battery Pack,you can vist our website!
According to Stanford professor and senior study author Simona Onori, initial simulations suggest batteries managed with the new technology could handle at least 20% more charge-discharge cycles, even with frequent fast charging, which puts extra strain on the battery.
Most previous efforts to prolong electric car battery life have focused on improving the design, materials, and manufacturing of single cells, based on the premise that, like links in a chain, a battery pack is only as good as its weakest cell. The new study begins with an understanding that while weak links are inevitable – because of manufacturing imperfections and because some cells degrade faster than others as they’re exposed to stresses like heat – they needn’t bring down the whole pack. The key is to tailor charging rates to the unique capacity of each cell to stave off failure.
“If not properly tackled, cell-to-cell heterogeneities can compromise the longevity, health, and safety of a battery pack and induce an early battery pack malfunction,” said Onori, who is an assistant professor of energy science engineering at the Stanford Doerr School of Sustainability. “Our approach equalizes the energy in each cell in the pack, bringing all cells to the final targeted state of charge in a balanced manner and improving the longevity of the pack.”
Part of the impetus for the new research traces back to a 2020 announcement by Tesla, the electric car company, of work on a “million-mile battery.” This would be a battery capable of powering a car for 1 million miles or more (with regular charging) before reaching the point where, like the lithium-ion battery in an old phone or laptop, the EV’s battery holds too little charge to be functional.
Such a battery would exceed automakers’ typical warranty for electric vehicle batteries of eight years or 100,000 miles. Though battery packs routinely outlast their warranty, consumer confidence in electric vehicles could be bolstered if expensive battery pack replacements became rarer still. A battery that can still hold a charge after thousands of recharges could also ease the way for electrification of long-haul trucks, and for adoption of so-called vehicle-to-grid systems, in which EV batteries would store and dispatch renewable energy for the power grid.
“It was later explained that the million-mile battery concept was not really a new chemistry, but just a way to operate the battery by not making it use the full charge range,” Onori said. Related research has centered on single lithium-ion cells, which generally don’t lose charge capacity as quickly as full battery packs do.
Intrigued, Onori and two researchers in her lab – postdoctoral scholar Vahid Azimi and PhD student Anirudh Allam – decided to investigate how inventive management of existing battery types could improve performance and service life of a full battery pack, which may contain hundreds or thousands of cells.