What is the difference between a power lithium-ion battery and an energy storage battery?

The difference between power lithium-ion battery and energy storage battery ①Energy storage battery and new energy power lithium-ion battery do not have much difference in terms of positive and negative materials, electrolyte, diaphragm, etc., but compared to power lithium-ion battery, energy storage The battery puts safety, cycle performance and cost first, and does not demand good rate performance and temperature performance. Therefore, energy storage batteries have requirements for material indicators and battery material ratios and power lithium-ion batteries. Big difference. ② Power lithium-ion batteries are mainly used in the fields of electric vehicles, electric bicycles and other electric tools, while energy storage batteries are mainly used in the fields of peak and frequency modulation power auxiliary services, renewable energy grid-connected and micro-grids. Power lithium-ion batteries are used as mobile power sources. Under the premise of safety, the volumetric energy density is as high as possible to achieve a more durable endurance. And because most energy storage devices do not need to move, energy storage batteries have no direct requirements on energy density. ③In terms of cost, power lithium-ion batteries face competition with traditional fuel power sources, while energy storage batteries have to face cost competition from traditional peak and frequency modulation technologies. In addition, the scale of energy storage power stations is basically above the megawatt level or even 100 megawatts. Therefore, the cost of energy storage batteries is lower than that of power lithium-ion batteries, and the safety requirements are also higher. ④ The energy storage battery management system is very similar to the power lithium-ion battery management system, but the power lithium-ion battery system is in a high-speed electric vehicle. The power response speed and power characteristics of the battery, the SOC estimation accuracy, and the number of state parameter calculations are all There are higher requirements, the energy storage system is extremely large, and the centralized battery management system is significantly different from the energy storage battery management system. ⑤The power lithium ion battery is the power source for the power supply of the tool, and usually refers to the battery that supplies power for electric vehicles, electric trains, electric bicycles, and golf carts. It is importantly different from the starter battery used to start the car engine. Mostly, valve-sealed lead-acid batteries, open-mouth tubular lead-acid batteries and lithium iron phosphate batteries are used. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What is the difference between a lead-acid battery and a lithium battery?