When it comes to ESS energy storage systems, NIO cannot be avoided. XPT NIO Drive Technology Company, a subsidiary of NIO, has previously developed a high-performance ESS energy storage system. To put it simply, the ESS energy storage system is to pack power batteries into groups and add them to the control system, so that while increasing energy for the car, it itself becomes an independent energy storage mechanism. After the automobile power battery system reaches the end of its life, its own energy storage can be used to achieve the effect of cascade utilization of the remaining batteries, thereby maximizing power. It is a very practical system.