Electric Field Distribution Simulation and Insulation Risk Analysis of 1500 V Lithium-ion Battery Cluster
The next generation of high voltage lithium-ion battery(LIB)energy storage system plays a significant role in reducing the cost and increasing the efficiency of the energy storage system.However,the demand of insulation level for battery cluster increases dramatically with the increasing of DC voltage of the system,which hinders the development of the high voltage LIB system in real application.For the first time,common-mode interference is considered under DC 1500V in the electric field analysis of battery cells with large span geometric dimensions(101～l0-3m)constructed.These simulation results show that considering the influence of common mode voltage,the increase of maximum field strength is about 86％,and the position with maximum electric field strength is transferred from the external insulating film to the air.The simulation in this work provides a reference for the insulation risk analysis of 1500V high-voltage lithium-ion battery systems.This work provides theoretical support for the insulation design of high-voltage battery systems.
lithium-ion batteryenergy storage systembubble defectDC 1500Vcommon mode voltage
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