摘要：【中文】本发明涉及一种电池模组余能检测方法，包括：S1、获取不同单体电池的性能数据，将性能数据一致的单体电池相互连接组成电池模组；S2、根据单体电池的性能数据以及电池模组中各单体电池的连接关系，分别得到电池模组的检测电流、充电截止电压和放电截止电压，其中，检测电流为I₃电流；S3、采用检测电流，对电池模组进行恒流放电至电池模组的放电截止电压，之后停止放电，将电池模组静置1h；S4、采用检测电流，对电池模组进行恒流充电至电池模组的充电截止电压，并记录恒流充电时间；S5、根据检测电流和恒流充电时间，得到电池模组的容量，即为电池模组的余能检测值。与现有技术相比，本发明在保证准确性的基础上缩短了余能检测时间。 【EN】The invention relates to a method for detecting the complementary energy of a battery module, which comprises the following steps: s1, acquiring performance data of different single batteries, and mutually connecting the single batteries with consistent performance data to form a battery module; s2, respectively obtaining the detection current, the charge cut-off voltage and the discharge cut-off voltage of the battery module according to the performance data of the single batteries and the connection relation of the single batteries in the battery module, wherein the detection current is I₃Current flow; s3, performing constant current discharge on the battery module by adopting the detection current until the discharge cut-off voltage of the battery module, stopping the discharge, and standing the battery module for 1 h; s4, carrying out constant current charging on the battery module to the charging cut-off voltage of the battery module by adopting the detection current, and recording the constant current charging time; and S5, obtaining the capacity of the battery module according to the detection current and the constant current charging time, namely obtaining the residual energy detection value of the battery module. Compared with the prior art, the invention shortens the complementary energy detection time on the basis of ensuring the accuracyAnd (3) removing the solvent.