The rapid development of battery industrial production has imposed strict regulations on the quality of battery packs and the work capacity of mass production. In the current environment, the quality of products has become critical, and the inspection of battery packs is also A very important part is mentioned. At this time, the necessity of the battery pack test system has a significant reflection. The battery module test of quality assurance can carry out a comprehensive inspection of the battery pack, and the battery module test inspection contents are specific. Which ones?

One, the battery module test item, the voltage of the battery pack itself

When the battery pack is leading the way, an induced electromotive force will be generated inside the battery pack. The induced electromotive force is not easy to be different due to the difference in external appearance and specifications. The battery voltage detected by the battery pack test system is caused by ignoring the internal resistance. The induced electromotive force at the time of damage, the information accurately measured by the voltmeter at this time is the induced electromotive force. The battery pack test system generally uses the 2-terminal measurement method to accurately measure the battery pack voltage.

2, the battery module test item, the voltage and current of the whole process of battery charging

When the battery pack is charged, the battery pack test system specifically tests the voltage test and current quantity test of the whole process of battery charging. During gradual charging, the voltage of the battery pack continues to rise with the increase of battery kinetic energy. This technical specification is constant current power supply. When the battery is charged, when the voltage of the battery pack reaches its own battery charging cut-off voltage, the voltage does not rise. At this time, it becomes a constant current power supply for battery charging. The battery pack is tested. What the test system needs to test is the voltage during the whole process. and its current flow data information.

3, the battery module test item, the volume of the battery pack itself

The kinetic energy obtained by the battery pack from the switching power supply during the battery charging process or the heat released by the battery pack to the load during the charging and discharging process is the battery pack volume to be tested by the battery pack test system. The battery pack test system test cannot guarantee immediate To accurately measure the volume of the battery pack, it is only to measure the working current and time of battery charging, and calculate the volume scale value according to the measurement information of the current amount and time period.