/PRZWT/Shenzhen, April 30, 2024 - Recently, Shenzhen BAK Power Battery Co., Ltd. (hereinafter referred to as "BAK Battery") unveiled a new semi-solid battery at CIBF 2024. Not only has it reached new heights in capacity, size, cycle life and safety, it has broadened more application fields, and has taken a solid step in the industrialization process.
Solid-state batteries have significant advantages in safety, energy density, cycle life and fast charging performance. They have broad application prospects in mobile devices, energy storage, new energy vehicles and other fields. They are regarded as the only way for the development of lithium batteries in the future. According to the forecast of China Commercial Industry Research Institute, the global shipment of solid-state batteries will reach 3.3GWh in 2024, and the shipment will increase to 614.1GWh in 2030. Facing the huge development space of the all-solid-state battery industry, BAK has continued to break through on the solid-state battery track with continuous R & D investment and profound experience accumulation, and expanded more application fields with technological progress.
The new BAK semi-solid lithium battery uses a polymer + oxide composite system. Through solid electrolyte blending and in-situ curing technology, a semi-solid battery with an electrolyte content of less than 10% is formed. The energy density under this technical route can reach more than 350Wh/kg, showing the characteristics of high energy, high safety, low expansion, low internal resistance and wide temperature range. The maximum charge and discharge ratio of BAK battery 30Ah products reaches 3C, which is positioned in electric motorcycle. After 3000 weeks of recycling, the battery capacity can still be maintained at more than 70%. 60Ah and 100Ah products are used in electric vehicles, and the maximum charge and discharge ratio reaches 3C. After 1500 weeks of recycling, the capacity can be maintained at more than 80%. The unveiling of BAK's three new products is not only a further exploration of the high performance and high safety of solid-state batteries, but also a strong impetus for the scale and industrialization of solid-state battery technology.
BAK semi-solid lithium battery
BAK Battery has demonstrated strong R & D strength and a clear strategic layout in the field of solid-state battery technology. At present, the semi-solid system is constantly being optimized, and the energy density can reach 360Wh/kg, taking into account the characteristics of high and low temperature and fast charging. Based on cost performance and customer demand considerations, BAK's first-generation semi-solid battery has an energy density greater than 320Wh/kg, a cycle life of 1500 weeks, and successfully passed the 3mm needle test and 150 ℃ hot box test. The semi-solid technology solution has radiated to the field of digital products, and has been shipped in batches to empower the explosion-proof safety field with extreme safety performance. Relying on its rich R & D and production experience in the field of polymer lithium batteries, BAK has started to validate small-scale semi-solid products for digital products, and has continuously tackled many technical points such as solid electrolyte material system, interface science, and process flow. It will also gradually break the circle in the fields of professional and consumer drones, two-wheelers, vehicle power, and energy storage. At present, BAK is also planning metal lithium anode semi-solid batteries, with plans to increase the energy density to 450Wh/kg by the end of 2024.
With the continuous advancement of technology, China's solid-state battery industrialization process is also accelerating, and the development of solid-state batteries is also expected to revolutionize the electric vehicle industry pattern. Liu Zhibo, vice president of BAK Batteries, said that semi-solid batteries can be compatible with existing lithium battery process equipment. In July this year, BAK semi-solid batteries will have a certain delivery capacity. In the next three to five years, it is expected to achieve large-scale production and provide customers with mature and cost-effective products.
Looking to the future, BAK Battery will continue to increase investment in research and development, follow the path of semi-solid-state battery technology, aim at the long-term development goal of all-solid-state batteries, promote the high-quality development of the industry, and contribute more to the global energy transition and sustainable development.
