What are the important indicators for detecting the safety of energy storage batteries?

my country Energy News: What are the most important indicators in the testing of energy storage batteries and energy storage systems? Ouyang Qiangyou: First of all, the capacity and internal resistance of the battery are the two most important indicators of the battery. They determine the energy density and power density of the battery. Secondly, the calendar life and cycle life of the battery are important indicators of durability, and they provide the basis for the manufacturer's warranty period. Finally, the grid-connected application performance of the battery is also very important, which proves the usefulness of energy storage batteries in applications such as peak and frequency modulation. my country Energy News: In TüV SÜD’s extensive testing experience, what are the problems with power lithium-ion batteries and energy storage systems? Ouyang Qiangyou: TüV SÜD has invested in the construction of eight power lithium-ion battery and energy storage system test centers around the world, covering the world's important new energy markets, and has accumulated a lot of test-related experience. In terms of power lithium-ion batteries, there is a certain gap between the performance, reliability and safety of the battery system and the international advanced level. The root cause of this problem is that the industry is affected by targets such as overtaking in corners and does not strictly follow the battery development. In the absence of sufficient Ru0026D verification testing and processing verification, we are eager to bring products to the market. Some companies even start working on battery packs and systems without performing sufficient verification tests at the cell and module level at all, resulting in innate shortcomings in battery development. In terms of energy storage batteries, some companies are overly pursuing cost reductions, resulting in insufficient battery protection measures, and increasing the risk of fires in product applications. The nearly 20 fires of energy storage batteries in South Korea last year sounded the alarm for our energy storage industry. Companies that do not pay attention to battery safety will certainly pay a greater price for this in the future. my country Energy News: Testing and certification can help companies reflect on design and continuously improve quality. What do you think is the prerequisites for my country's energy storage batteries to enter the international market and gain a firm foothold? Ouyang Qiangyou: At present, the biggest difficulty in domestic battery testing is that the accuracy of the testing equipment is insufficient, which causes the consistency of many companies' products to be poor. It is recommended that the company should cooperate more with third-party laboratories with high-precision testing equipment and strict testing procedures to improve its own testing capabilities while obtaining high-quality data, and make horizontal comparisons with advanced companies in the same industry at home and abroad . Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the traditional battery test methods?