BYD had 381 patents in batteries during Q4 2023. BYD Co Ltd filed patents related to innovative battery technologies, including negative electrode materials for solid-state lithium batteries, battery pack power connection systems for vehicles, nickel cobalt lithium manganate cathode materials, vehicle thermal management systems, and battery equalization systems. These patents aim to improve battery performance, efficiency, and safety in electric vehicles. GlobalData’s report on BYD gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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BYD grant share with batteries as a theme is 57% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Negative electrode material, preparation method thereof, and all-solid-state lithium battery (Patent ID: US20230420663A1)
The patent filed by BYD Co Ltd. describes a negative electrode material for all-solid-state lithium batteries, consisting of a core with a glassy solid electrolyte and dispersed amorphous lithium-silicon alloy particles, covered by an amorphous lithium-silicon alloy layer. The composition of the alloy particles and layer is specified as LixSi and LiySi, respectively, with specific ranges for x and y values.
The claims detail the mass ratio and fraction of the alloy particles in the core, along with specifications for particle size and layer thickness. The patent also includes information on the glassy solid electrolyte composition, preparation method for the negative electrode material, and the application of the material in an all-solid-state lithium battery. The battery design involves a positive electrode, negative electrode with the described material, and a solid electrolyte layer, with specific requirements for the negative electrode structure.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
