Kirin Battery, with its third-generation CTP technology, boasts a world-leading system integration, a volume utilization rate exceeding 72%, and an energy density of up to 255Wh/kg, easily achieving a 1000km range for the entire vehicle.
The Kirin battery is essentially a lithium-ion battery, with its main innovation being in its structure, incorporating elements of both lithium iron phosphate and ternary lithium-ion batteries. The Kirin battery's material innovation primarily lies in its negative electrode material. To achieve 4C fast charging technology, it requires turning artificial graphite into carbon-coated secondary particles and adding a carbon-based negative electrode. This also places higher demands on the coordination of the electrolyte and conductive agent.
Features of Kirin batteries
First, the CTP3.0 battery adds a water-cooled plate between two cells, which reduces the heat conduction between adjacent cells and prevents thermal runaway;
Secondly, it can meet the requirements of high-voltage fast charging, making 4C charging a breeze, and it will be available on the market next year;
Third, it can greatly improve battery life because the water-cooled plate has a buffering effect;
Fourth, the energy density is improved. Kirin batteries can increase the space utilization. The energy density of lithium iron phosphate system is 160wh/kg, and that of ternary high nickel can reach 250wh/kg, which is 13% more energy than 4680 batteries.
Kirin batteries break through functional boundaries, creating a multi-functional flexible sandwich structure that combines three benefits in one, and featuring a unique inverted cell design, achieving a battery pack volume utilization rate exceeding 72%. The Kirin battery system boasts an energy density of 255Wh/kg. Under the same chemical system and battery pack size, its capacity is 13% higher than the 4680 battery system. Simultaneously, CATL pioneered a large-area cell cooling technology, quadrupling the heat exchange area of the Kirin battery, halving the temperature control time, supporting 5-minute hot start and 10-minute fast charging, and improving the thermal stability and thermal safety of the entire chemical system.
