Echelon utilization detection device for retired lithium batteries of electric vehicle

• Main Authors: ZHU YANGYAN, FU XIAOLIN, WANG SHUAI, TAO QINGWEI, WANG ZHIJIE, WANG HONG, WANG YUPENG, WANG LONG
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2020
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to an echelon utilization detection device for a retired lithium batteries of an electric vehicle. The device comprises multiple groups of lithium battery modules, each group oflithium battery modules in the plurality of groups of lithium battery modules is connected with the same CAN bus through a test unit circuit, the positive electrode of one group of lithium battery modules in the plurality of groups of lithium battery modules sequentially passes through charging and discharging equipment and an upper computer and then is in CAN communication connection with the CANbus, and the negative electrode of one group of lithium battery modules in the plurality of groups of lithium battery modules is grounded after passing through a shunt. Each test unit circuit comprises a fan control circuit module, a voltage detection circuit module, an equalization control circuit module and a temperature detection circuit module which are respectively connected with one group of lithium battery modules,