The safety design of lithium-ion battery includes many aspects. The design of battery safety structure, the selection of safety materials, the design of safety protection functions, and the planned safety verification run through the whole process of lithium-ion battery design. Su Jinran, deputy chief engineer of Tianjin Lishen Battery Co., Ltd., said in an interview with China Electronics News that product safety begins with product design. The selection of electrode materials, diaphragms and electrolytes with better safety is the primary consideration in battery safety design. As far as battery cathode materials are concerned, ternary materials, lithium manganate and lithium iron phosphate have better safety than lithium cobalate and lithium nickel. These materials have been widely used in battery design and can achieve good safety performance.

He said that the research, development and production of positive and negative electrode materials and electrolytes in China have reached a certain scale, which can basically meet the requirements of lithium ion battery design and production. In addition, the application research of some safety coating materials has become practical, which has injected new impetus for the improvement of the safety performance of lithium ion batteries. The research and application work in this area need to be increased and followed up in China. He said that Tianjin Lishen Battery Co., Ltd. was dedicated to the development and production of lithium ion batteries, and the product quality and safety were generally recognized in the industry. At present, the company's lithium ion battery material application platform covers the material system of lithium cobalate, ternary materials, lithium manganate, lithium iron phosphate, and its product series involves cylindrical, square, polymer and large capacity power lithium batteries. In terms of improving the safety performance of batteries, the company has established safety design criteria, safety production process criteria and product safety test criteria, which regulate the design, production and inspection process of products and ensure the safety of batteries.

In terms of the safety of lithium-ion batteries, all components and materials used for battery manufacturing play an important role, said Tansuke Nakagawa, vice president of Sanyo Electric Co., Ltd. Mobile Energy Company. They are now taking relevant measures to combine components and materials to ensure the safety of such batteries. In addition, in order to make full use of components and materials, it is important to emphasize advanced industrial production technology and quality control technology to improve safety. To ensure the safety of lithium-ion batteries, the battery and electrical equipment should be considered together. At the same time, the safety of batteries should be jointly solved by electronic equipment manufacturers and battery manufacturers. Nakayama explained.