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Power battery technology

The testing and evaluation of power batteries is very important in the development of the pure electric vehicle industry, especially how to test and evaluate the performance of power battery packs. At present, domestic and foreign research in this field has just started, there are still many problems to be solved. In terms of the following aspects.
1、Performance test and evaluation of power battery system. The existing test methods related to power batteries or various national standards and industry standards are more directed to power battery cells or small modules. Only the performance of the battery itself or multiple battery modules is evaluated. There is no test method for the entire power battery system. Evaluation Criteria.
2、Test and evaluation of safety performance of power battery system. The safety performance of the power battery system is crucial to the industrialization of pure electric vehicles. How to evaluate and evaluate its safety performance is a hot issue in the industry and an urgent problem to be solved.
3、Power battery system accelerated life test method. The cycle life is only a direct indication of the life and price of the vehicle. The current cycle test results are still far from the actual application conditions of the vehicle. The power battery usually needs 10 to 15 years of service life. Therefore, the failure mechanism analysis of different electrochemical systems, under different use environments and different use conditions, combined with the relevant electrochemical model to determine the accelerated life test method, becomes pure electric vehicle power. A very active branch of battery research and development.