Storage battery pack charging and discharging testing device and method

The invention discloses a storage battery pack charging and discharging test device and method, and the device is characterized in that the positive sampling end of an electronic load is connected with the positive electrode of a storage battery pack, the negative sampling end of the electronic load is connected with the negative electrode of the storage battery pack, a single information sampling line of the storage battery pack is electrically connected with a BMS, and the BMS is in communication connection with an upper computer; during a discharge test, the anode of the electronic load is connected with the anode of the storage battery pack, and the cathode of the electronic load is connected with the cathode of the storage battery pack. And during a charging test, the positive electrode of the electronic load is connected with the positive electrode of the direct-current power supply, the negative electrode of the direct-current power supply is connected with the negative electrode of the storage battery