防水透气阀在动力电池设计中的应用  

Application of Waterproof Breather Valve in the Design of Power Battery

作　　者：王磊[1] 刘崇威[1] 沙鹤松 Wang Lei;Liu Chongwei;Sha Hesong(Baoding R&D Branch of Great Wall Motors Co.,Ltd.,Baoding 071000)

机构地区：[1]长城汽车股份有限公司保定研发分公司,保定071000

出　　处：《汽车工程师》2023年第5期45-48,共4页Automotive Engineer

摘　　要：首先对影响动力电池包内外气压平衡的典型工况进行了分析,并说明了防水透气阀的工作原理,根据典型工况下透气量及防爆压力要求进行了防水透气阀的选型计算,最后对应用透气阀可能产生的“冷凝”现象进行了探讨并在典型环境下开展试验,结果表明,在动力电池上应用透气阀不会因“冷凝”现象出现积水而影响电池包的高压绝缘性,由此证明了防水透气阀在动力电池设计中应用的可行性。Firstly,the typical environment of power battery affecting the balance of air pressure inside and outside the pack were analyzed in the paper.Secondly,the operational principle of waterproof breather valve was explained,the waterproof breather valve was selected and calculated according to the requirement of amount of breather air and explosion-proof pressure under typical condition.Finally the“condensation”phenomenon caused by the application of breather valve was discussed and tested in typical environment.The results show that the application of breather valve on the power battery pack will not cause water accumulation in the pack due to“condensation”,which will affect the high-voltage insulation in the battery pack,proving the feasibility of application of waterproof breather valve in the power battery design.

关 键 词：动力电池 气压平衡 防水透气阀 

分 类 号：TM910[电气工程—电力电子与电力传动]