Rapid failure detection method of parallel single batteries in a serial-parallel battery pack

摘要

#$%^&*AU2017100660A420170706.pdf#####Abstract The invention relates to a rapid failure detection method of parallel single batteries in a serial-parallel battery pack, used for the failure detection of the parallel single batteries. According to the detection method, solenoid coils are unidirectionally winded on outer surfaces of the parallel single batteries, the size and the direction of the current in the single batteries are indirectly sampled by using the Faraday law of electromagnetic induction. and then whether the single batteries are invalid is judged based on the sampled size information and the direction information of the current. The detection method is simple, the cost budgeting is lower and the practicability is higher, the size and the direction of the current of each working single battery in the parallel battery pack are monitored, therefore the rapid detection of each single battery in the parallel battery pack is effectively realized, the accuracy and the reliability of the detection are improved, meanwhile the security and the validity of the entire detection are improved, and the ability of predicting the performance of the batteries is also improved.1/1 2 Fig. 1 Solenoid coil Curant infoatim CImcto Batey.ng.n Sol eno id collecting an coil es m e Fig. 2 Solenoid coil -----------------------------------SoenidInfarnation 1 1 tiP,/ m iai Baty nget coi l sapling module pmesn euecre .eul7odl .Fg 3 i I a-rent infonontid collecting and psing module I Solenoid L-----------__------_------------Fig. 3 Solenoid coil .. Solenoid _ Oret inforniatimn collecting and processing nodule : coil Fig. 4