Zhong Guo Qi Che Bao Wang·2026-02-24 10:13Core Insights - BYD has disclosed its latest technological advancements in solid-state and sodium-ion batteries, positioning itself strategically for the post-lithium battery era with a dual technology approach [1] - The highly anticipated sulfide solid-state battery is set for small-scale production by 2027, marking a significant step from laboratory development to engineering application [1][3] - The sodium-ion battery has completed its third-generation technology platform development, achieving a cycle life of over 10,000 times, with mass production contingent on market demand [1][4] Solid-State Battery Developments - BYD has identified the sulfide system as the core breakthrough direction among various solid-state battery technologies, with ionic conductivity nearing that of traditional liquid electrolytes [3] - Current research focuses on overcoming challenges related to cycle life and fast charging performance, with products aimed at high-end models or specific applications post-2027 [3] - The public timeline reflects BYD's confidence in its technology and indicates an impending competitive race for the next generation of power batteries [3] Sodium-Ion Battery Readiness - Unlike the solid-state battery's countdown, the sodium-ion battery is in a state of technological readiness, awaiting market opportunities for mass production [4] - The third-generation sodium battery utilizes a highly stable poly-anion system, addressing common industrial challenges and clearing technological barriers for commercialization [4] - The production schedule will be dictated by market demand, allowing BYD to adjust capacity as needed based on cost curves and customer orders [4]