"Solid polymer lithium ion power battery with large capacity" project passed the evaluation of scientific and technological achievements evaluation

On October 8th, 2018, the third party professional scientific and technological achievements evaluation institutions -ZKHC (Beijing) science and technology achievements evaluation center, which is in Beijing, has carried on the evaluation of scientific achievements on project of "solid polymer lithium ion power battery with large capacity " by Shenzhen Bo Ao Energy Technology Co., Ltd. with experts in accordance with the relevant provisions of the ministry of science and technology on "science and technology evaluation method" and the standards of evaluation of scientific achievements and application. The evaluation is based on the principle of scientific, independent, objective and fair.

It is understood that the evaluation experts by the Chinese academy of sciences Lu Jiang, senior adviser Xu Dingming under the state council, China battery industry association, vice executive director of the high jing-zhong wang, the league of automobile power battery research institute co., LTD., a professor wu gl, researcher at the institute of light industry and chemical power guo-qing cao, li li, a professor at the university of Beijing institute of technology, the ministry of education of science and technology development center of stone, etc.

After the expert review, the main innovation points of the project are as follows: through the breakthrough of intelligent laser cutting technology, large pole lamination technology, welding technology, packaging technology and electrolyte injection technology, the small batch production of large capacity solid polymer lithium ion power battery has been realized; Through the breakthrough of high-power discharge technology, high-capacity battery production technology, temperature uniformity control technology and other technological technologies, a series of solid-state polymer lithium-ion batteries with high capacity, high energy density, high power ratio and ultra-low temperature performance have been developed. According to the northern automobile quality supervision, inspection and appraisal test, 1100Ah lithium iron phosphate battery, 500Ah lithium iron phosphate battery and 300Ah ternary battery can pass the mandatory safety test. Three yuan energy type 16 Ah batteries energy density ratio can reach 377 wh/kg, power type 4 Ah cobalt acid lithium battery discharge capacity 180 C keep the rate of 83.13%, low temperature type 7.5 Ah cobalt acid lithium batteries - 70 ° C environment down keep capacitance rate 77.43%, 500 Ah lithium iron phosphate batteries - 400 a discharge capacity of 40 ° C environment keep rate was 85.9%. Send the batteries by the north automobile quality supervision and inspection qualification test, its performance in accordance with GB/T 31484-2015 "electric car battery cycle life with dynamic requirements and test methods", GB/T 31485-2015 "electric car battery with dynamic safety requirements and test methods", GB/T 31486-2015 "electric car battery with dynamic performance requirements and test methods of the standard. After many users use, the response is good. The project products have independent intellectual property rights, 9 invention patents have been accepted and 3 utility model patents have been authorized. With remarkable economic and social benefits, it has a broad application prospect in the field of new energy automobile power battery and energy storage. The project has reached the international advanced level, among which the low-temperature performance has reached the international leading level. After a comprehensive review by the expert group, the experts at the meeting unanimously agreed that the project of "large capacity solid polymer lithium ion power battery" passed the evaluation of scientific and technological achievements.