GAC Aion "stabs" the magazine battery again, setting a new height in the safety of lithium iron phosphate batteries

In March this year, GAC Aion launched the world's first bullet-proof battery system safety technology (referred to as "bullet-proof battery"), which was the first time in the industry that the whole pack of ternary lithium batteries could not catch fire after being punctured, redefining the safety standard of ternary lithium batteries and gaining high praise from both inside and outside the industry. The launch of AION Y, the "first bullet-proof battery car", was a hot seller, proving from another perspective that battery safety has always been one of the important considerations for consumers when purchasing new energy. On May 20, GAC Aion once again released the lithium iron phosphate (bullet-proof battery) puncture test, setting a new height for lithium iron phosphate battery safety.

The most stringent national standard needle puncture test, certifying the highest safety lithium iron phosphate battery

Previously, in order to verify the safety of the "magazine battery", Dr. Liu Shiqiang, chief expert of China Automotive Technology and Research Center Co., Ltd. and one of the drafters of the national battery safety standard, led a team to conduct a needle puncture thermal diffusion test on a whole pack of ternary lithium batteries equipped with the safety technology of the magazine battery system, achieving a historic breakthrough in the safety of ternary lithium batteries. In this test, a whole pack of lithium iron phosphate (ordinary battery) and a whole pack of lithium iron phosphate (magazine battery) were used for comparative testing. The test conditions also chose the most stringent test conditions of the national standard, that is, the needle puncture test was conducted under the conditions of the thickest steel needle diameter of 8mm and 100% SOC power.

The test results show that after the steel needle pierced the battery cell of the lithium iron phosphate (ordinary battery) pack and triggered thermal runaway, the voltage dropped and the temperature rose, with the highest temperature reaching 329.4°C, and smoke appeared, which lasted for 16 minutes; while after the lithium iron phosphate (magazine battery) pack was pierced, the highest temperature was only 51.1°C, and after 48 hours of rest, the single cell voltage dropped to 0V, the temperature dropped to room temperature, and there was no smoke, fire or explosion, and the battery pack was stable. Open the battery system shell, and its internal structure is intact.

Judging from the test results, the lithium iron phosphate pack equipped with the magazine battery system safety technology did not emit smoke and the temperature was only 51.1°C compared to the ordinary pack. It is the power battery with the best performance in the needle puncture thermal runaway experiment, setting a new height in the safety of lithium iron phosphate batteries.

End the route competition and fully meet the needs of users in different travel scenarios

Under the same driving range (600km), the weight of the whole battery pack of ternary lithium can be reduced by more than 100-150kg compared with other lithium iron phosphate batteries, which is equivalent to the weight of 1.5-2 adults. The lightweight of the whole vehicle can significantly improve the handling and acceleration performance of the vehicle, which is suitable for customers who pursue driving performance and ultra-long driving range; secondly, the driving range of ternary lithium batteries in low temperature environments is about 10% higher than that of lithium iron phosphate batteries, and it will achieve longer driving range in winter. Lithium iron phosphate has an ultra-high cycle life of 4000+ times, which is twice that of other ternary lithium batteries, and at the same time, it has a lower cost, which is suitable for customers with high-frequency charging needs. Therefore, the two technical routes of lithium iron phosphate batteries and ternary lithium batteries can meet the different travel needs of users.

although Although the comprehensive performance of ternary lithium batteries is stronger, lithium iron phosphate batteries have better thermal stability and better safety performance. Therefore, in the past, everyone has been discussing which one is the future of ternary lithium batteries and lithium iron phosphate batteries? The emergence of the magazine battery has solved the problem of choosing ternary lithium batteries or lithium iron phosphate batteries. The magazine battery system safety technology has four core technologies, including ultra-high heat-resistant and stable battery cells, ultra-strong heat-insulating battery safety cabins, extremely fast cooling systems, and full-time control of the fifth-generation battery management system. It can improve the system safety performance of the battery from three aspects: improving the intrinsic safety of the battery cells, strengthening passive safety, and active safety prevention and control. The magazine battery is currently the only technology in the industry that can take into account the safety of batteries in both ternary lithium and lithium iron phosphate technology routes.

The emergence of the magazine battery has made batteries of different chemical systems safe and non-flammable, providing the industry with a new way of thinking to solve battery safety issues, ending the dispute over industry technology routes, and fully meeting the needs of users in different travel scenarios.

Safety never ends. GAC Aion continues to practice the brand's original intention of creating mobile travel accompanied by AI, including collaborating with academic institutions such as Tsinghua University to contribute GAC Aion's strength to promote the advancement of battery safety technology in the entire industry and bring safe products to users.

As a winner of Toutiao's Qingyun Plan and Baijiahao's Bai+ Plan, the 2019 Baidu Digital Author of the Year, the Baijiahao's Most Popular Author in the Technology Field, the 2019 Sogou Technology and Culture Author, and the 2021 Baijiahao Quarterly Influential Creator, he has won many awards, including the 2013 Sohu Best Industry Media Person, the 2015 China New Media Entrepreneurship Competition Beijing Third Place, the 2015 Guangmang Experience Award, the 2015 China New Media Entrepreneurship Competition Finals Third Place, and the 2018 Baidu Dynamic Annual Powerful Celebrity.