纯电动汽车并联式电池模组分析

Analysis of Parallel Battery Modules for Pure Electric Vehicles

动力电池是纯电动汽车的主要动力来源,其安全问题和续航问题是目前纯电动汽车电池模组开发所面临的主要问题。该文通过对传统并联电池模组和电容式并联电池模组的对比分析,以及对电容式并联电池模组控制方式的原理分析,阐明电容式并联电池模组对单体电池的控制更加精确,在大大减少每个较小模块负荷的同时也不会对整体放电产生影响,消除了串联式电池模组的弊端。对开发安全可靠、性能优良的电池模组具有指导意义。

Power battery is the main power source of pure electric vehicles, and its satety and endurance are the main problems taced by the development of battery module of pure electric vehicles. Through the comparative analysis of the traditional parallel battery module and the capacitive parallel battery module, and the analysis of the control mode principle of the capacitive parallel battery module, it is clarifies that the capacitive parallel battery module provides more accm＇ate control to individual cell, which can greatly reduce the load of each smaller module without attecting the overall discharge, and eliminate the drawbacks of the series battery module. It is of guiding significance to develop sate and reliable battery module with excellent performance.