Zheng Quan Shi Bao Wang·2025-04-22 08:25Core Viewpoint - The second-generation Kirin battery from CATL has achieved a "trilemma" in battery performance, being recognized for its exceptional capabilities and customization, making it a standard for flagship electric vehicles from various manufacturers like Xiaomi, Ideal, and Zeekr [1][6]. Performance and Technical Specifications - The Kirin battery powers the Xiaomi SU7 Ultra, which aims to be the "world's fastest four-door production car," achieving a 0-100 km/h acceleration in 1.98 seconds and a top speed of 350 km/h [2][6]. - The battery can handle a peak discharge rate of 16C, with a peak voltage of 897V and a maximum power output of 1330 kW, even at 20% charge, it can still deliver over 800 kW [3][5]. - The battery's charging capability is also impressive, allowing it to charge from 10% to 80% in just 11 minutes at a 5.2C charging rate [3]. Thermal Management and Safety - The Kirin battery maintains a peak temperature below 55 degrees Celsius during extensive testing, ensuring optimal operating conditions even under high discharge rates [3]. - The battery features the lowest internal resistance among mass-produced products, at just 0.25 mΩ, and employs a dual large-surface cooling structure to enhance heat dissipation [4][5]. Technological Innovations - Key technologies supporting the Kirin battery include the super-electronic network positive electrode technology and fast-ion ring graphite negative electrode, which significantly enhance discharge response and lithium-ion exchange rates [5][6]. - The battery's design incorporates high-conductivity electrolytes, improving conductivity by 20%, and a cooling system that increases cooling surface area by 3.6 times compared to traditional designs [4][5]. Market Position and Collaborations - The Kirin battery is featured in multiple flagship models, including the Xiaomi SU7 Max and Ideal MEGA, showcasing its high-end customization capabilities [6][7]. - CATL has established strong partnerships with various automakers, with over 17 million vehicles equipped with CATL batteries globally, maintaining the top position in battery usage for eight consecutive years [7].