A heat spreader based on graphene effectively removes heat from the battery, warming it up before or during charging.
Solidion, based in Dallas, USA, has developed a patented system that provides fast charging in all climates. About that writing Interesting engineering.
The system uses a graphene-based heat sink. It quickly heats up the batteries before or during charging, and the integrated cooling system is activated when it is discharged to prevent overheating. According to the company, the technology enables an electric car to be quickly charged in any weather, especially to overcome the limitations of the current batteries in cold climates. Solidion plans to bring it to market within 2-3 years.
To compete with internal combustion engine vehicles (ICEVs), rapid charging of an electric vehicle must be independent of the weather and take approximately the same time as refueling a gasoline-powered car.
Temperature variations across different seasons and geographic areas can make it difficult to quickly charge EV batteries because they may react differently.
The average winter temperature in most of northern Europe and half of the United States is below 0°C. Fast charging at low temperatures is not possible with any EV battery available today. today.
According to the company, to meet the urgent need of the electric vehicle market for fast charging in all weathers, its technical team has developed and patented a method to quickly charge battery cells or packs without affecting the integrity. This strategy allows batteries to operate safely and avoid temperature problems.
To achieve this, the Solidion system uses a graphene-based heat sink that effectively removes heat from the battery, warming it up before or during charging.
Graphene is very effective for this purpose, with a thermal conductivity of 5300 W / mK, much better than copper (410 W / mK) and being four times lighter.
The structure of graphene
Photo: innovationnewsnetwork.com
When the battery is used to power an electric vehicle, for example, the system switches to cooling mode, removing heat from the battery to prevent overheating. The heat sink directs excess heat to the cooling system, providing effective temperature control and protecting battery performance.
The Solidion system automatically switches between heating while charging and cooling during use, providing safe, fast charging across a range of temperatures.
To address the expected graphite shortage of 1.4 million tonnes/year by 2028, Solidion has also developed a cost-effective process for producing anodic graphite from sustainable sources, including bio- mass and recycled materials. The company wants to place the US among the top 10 graphite producers in the world by implementing its plan for sustainable graphite production, with the ultimate goal of becoming a global leader.
Solidion specializes in high capacity solid state batteries and anodes. Its two main product lines are three types of solid state batteries and advanced anode materials designed for increased performance. These include Gen 1 high-silicon lithium-ion cells, Gen 3 lithium-sulfur cells, and Gen 2 anodeless lithium metal cells. Each type of battery uses a different solid electrolyte, which is easily synthesis from a polymer or polymer-inorganic compound.
Solid-state batteries can be brought to market quickly because they are compatible with current production capacity
We wrote that before Scientists were able to recycle old batteries into new ones while maintaining a high capacity. They have found an easy way to recycle solid batteries and then regenerate them to create functional batteries.
2024-11-03 18:00:00
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