First stab of lithium iron phosphate magazine battery! Solve the safety problem of dual battery route
In March of this year, GAC Ion released the world’s first magazine battery system safety technology (referred to as “magazine battery”). For the first time in the industry, the entire package of ternary lithium batteries will not fire after acupuncture and redefine the safety standards for ternary lithium batteries. ; On May 20th, GAC Ion released the lithium iron phosphate (mag battery) acupuncture test results again, which set a new level of safety for lithium iron phosphate batteries. Previously, in order to verify the safety of the 'mag batteryAcupuncture thermal diffusion test was carried out, and a breakthrough in the safety of ternary lithium batteries was achieved. In this test, the whole package of lithium iron phosphate (ordinary battery) and the whole package of lithium iron phosphate (mag battery) were used for comparison test. The test conditions also selected the most stringent test conditions of the national standard, that is, the acupuncture test was carried out under the conditions of 8mm thickest steel needle diameter and 100% SOC power. The test results showed that after the steel needle pierced the battery to trigger the thermal runaway, the voltage dropped and the temperature rose. The highest temperature was 329.4°C, and there was smoke, which lasted for 16 minutes; After the whole package of lithium iron phosphate (magazine battery) was punctured, the highest temperature was only 51.1℃. After 48 hours of inactivity, the cell voltage dropped to 0V, the temperature dropped to room temperature, and there was no smoke, fire or explosion. The battery The package status is stable. Open the battery system shell, its internal structure is intact. From the test results, the whole pack of lithium iron phosphate equipped with the safety technology of the magazine battery system is relatively ordinary whole pack, does not emit smoke and has a temperature of only 51.1℃, which is the best performance power battery in the current out-of-control acupuncture heat test. , Refreshing the new height of safety of lithium iron phosphate batteries. According to a person from GAC Ian, under the same battery life (600km), the weight of the whole battery pack is 100kg-150kg less than other lithium iron phosphate batteries, which is equivalent to the weight of 1.5-2 adults. The light weight of the whole vehicle can significantly improve the handling performance and acceleration performance of the vehicle; secondly, the battery life of the ternary lithium battery in a low temperature environment is about 10% higher than that of the lithium iron phosphate battery, and it will achieve longer battery life in winter. . The lithium iron phosphate has an ultra-high cycle life of 4000+ times, which is twice that of other ternary lithium batteries, and at a lower cost. Therefore, the two technical routes of lithium iron phosphate battery and ternary lithium battery can meet the different travel needs of users. A person from GAC Aian said that the emergence of the magazine battery has solved the problem of choosing a ternary lithium battery or a lithium iron phosphate battery. The safety technology of the magazine battery system has four core technologies, including ultra-high heat-resistant and stable batteries, ultra-strong thermal insulation battery safety compartment, rapid cooling system with rapid cooling, and full-time control of the fifth-generation battery management system. The battery's intrinsic safety enhancement, passive safety enhancement, and active safety prevention and control improve the battery's system safety performance in three aspects. The magazine battery is the only technology in the industry that can simultaneously take into account the battery safety of the two technical routes of ternary lithium and lithium iron phosphate.