Pulse charging and discharging endurance test unit and device and automobile test system

The embodiment of the invention provides a pulse charging and discharging endurance test unit, a pulse charging and discharging endurance test device and an automobile test system, and the pulse charging and discharging endurance test unit comprises a battery branch formed by connecting a plurality of battery modules in series, and a pulse power supply. Each battery module includes: a first battery and a second battery; the first battery and the second battery are connected in series through same-name electrodes to form the battery module; and the battery branch is connected with the pulse power supply in parallel. According to the embodiment of the invention, as the pulse polarization voltage is generally only about 10% of the open-circuit voltage, the output voltage requirement of the pulse charge-discharge endurance test device is reduced to about 10% of that of a conventional scheme, and the test cost can be reduced. 本申请实施例提供一种脉冲充放电耐久试验单元、装置和汽车测试系统，其中，脉冲充放电耐久试验单元包括：多个电池模块串联形成的电池支路、脉冲电源；每个电池模块包括：第一电池和第二电池；