摘要
降低单体电池的产热对于电池包设计非常重要。测量18650型锂离子电池的比热容、交流阻抗、2.00 C和3.00 C倍率放电的产热功率,发现欧姆内阻产热在单极耳电池的总产热中比重最大,为58.0%。将电池改成双极耳设计,欧姆内阻产热的比重降至37.4%,与单极耳电池相比,2.00 C和3.00 C倍率放电的产热功率分别下降30.8%和34.1%。
Reducing the heat generation of a single cell was very important to the battery pack design.The specific heat capacity,AC impedance,heat generation power of the 18650 type Li-ion battery at discharge rate of 2.00 C and 3.00 C were measured.It was found that the heat generation of ohmic internal resistance was the largest proportion in the monopole ear battery,accounting for 58.0%.When the battery was changed into the bipolar ear design,the proportion of heat generated by ohmic internal resistance of the battery was reduced to 37.4%.Compared with monopole ear battery,the heat generation power of discharge rate at 2.00 C and 3.00 C was reduced by 30.8%and 34.1%,respectively.
作者
陈述林
郭密
王珍珍
CHEN Shu-lin;GUO Mi;WANG Zhen-zhen(Dongguan Sinowatt Co.,Ltd.,Dongguan,Guangdong 523696,China)
出处
《电池》
CAS
北大核心
2021年第4期385-388,共4页
Battery Bimonthly
关键词
锂离子电池
内阻
产热功率
设计优化
双极耳
Li-ion battery
internal resistance
heat generation power
design optimization
bipolar ear