This equipment is designed according to the requirements of various battery short-circuit test standards. According to the standard requirements, the short-circuit device must meet the internal resistance range of 80±20mΩ (or ≤10mΩ) to obtain the maximum short-circuit current required by the test; in addition, the circuit design of the short-circuit device is also It must be able to withstand the impact of large currents, so we have selected industrial-grade DC electromagnetic contactors, all-copper terminals and internal copper plates for diversion. The wide and thick copper plates can effectively improve the heat dissipation effect, make the high-current short-circuit device safer, and effectively reduce the test equipment Loss, to ensure the accuracy of the test data.