After the battery is produced as a finished product, the power battery will be coated with a blue film to prepare for the later formation of modules and packs. In this way, the insulation test of the film will be carried out to ensure the integrity of the film. The traditional test will be carried out using AC voltage withstand test, and the high-voltage test will be carried out on the battery. The breakdown phenomenon will occur at the position where the insulation is not good, but this kind of breakdown will cause a spark carbonization point to the steel shell of the battery, In the later stage, the film will be coated and glued again, and the steel shell will be cleaned, which adds a lot of unnecessary workload to the customer.

The newly upgraded RJ6837H AC/DC withstand voltage insulation tester of Qingdao Ruijie Intelligent Instrument Co., Ltd. can effectively complete the withstand voltage test of the coating. If the ignition condition is detected during the test, the output will be immediately stopped, so that the coating is only tested to be poor, and will not cause damage to the tested object.

This product has been verified by many domestic lithium battery manufacturers, and can effectively detect the poor coating, which can replace the traditional withstand voltage tester.