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Xing Mobility Total Immersion Cooled Batteries: 3,000 Cycles and Super Fast Charging

Battery performance depends on it being kept in a optimum temperature range, preventing it from getting too hot when it is feeding the traction system or recharging, and from being too cold, which affects its performance. The old cooling systems air or the most modern liquidare far from achieving their goal in all conditions. Xing Mobility believes that the best solution to keep batteries at their optimum temperature is immerse them in coolant. The immersion cooling technology It’s not new, but this Taiwanese company thinks it’s ready for use in electric vehicles.

Modern batteries need strict thermal management to keep their temperature in an optimal range. If it is too low, the vehicle does not reach its maximum performance. If it is too high, several problems can arise, such as further degradation of the battery, reducing its lifespan, or the risk of thermal runaway, which is essentially a consequence caused by overheating.

Electric vehicles initially used forced-air cooling to keep the battery at the optimum temperature. This system was clearly inefficient in the case, for example, of the Nissan Leaf. For this reason, most current electric vehicles use liquid cooling, which has greatly improved the results. However, it is far from perfect. Its operating scheme is based on the use of cooling plates, ducts or channels inside the battery packs that individually cool cells. The result is that heat transfer only takes place in the area where these cooling elements are located.

immersion refrigeration battery Xing Mobility-interior
The immersion of the battery allows a better temperature distribution between each of the cells and helps to increase the rate of charge and discharge without danger of overheating.

That’s why, flood the battery with coolant it is a much more effective solution, although it also presents its own problems. The first and most important is that the fluid used must be a dielectric coolant (an electrical insulator with low conductivity) durable and safe.

The Taiwanese company Xing Mobility presented for the first time in Stuttgart, Germany, within the framework of the Battery Show Europe, a new battery, Immersio X25which uses an immersion cooling system based on a fluid with these characteristics. Its cooling system allows a better temperature distribution between each of the cells individually. This, in turn, helps to raise the rate of loading and unloading no danger of overheating. These characteristics are especially important for applications in heavy electric vehicles that are used in different services or for high performance electric carswhere battery packs are usually large and are subjected to situations of high thermal stress.

The Xing Mobility Immersio X25 system combines a battery pack, a management system and an active safety module to allow “super fast charging”, although it does not specify the power that it could support. The result is that the useful life of the battery cells can be doubled. reaching up to 3,000 charge and discharge cycles. The system is primarily designed for commercial vehicles with large batteries.

This technology is not really new in the automotive sector. Malhe already presented a system of this type last year, although Xing Mobility is the first to market it. At the moment, he claims to have signed a contract with an Asian manufacturer, whose name he has not mentioned, to implement this system in a commercial vehicle whose production is scheduled for the end of the year.

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