图片来源：世界知识产权组织（WIPO） 今年以来宁德时代已公布的国际专利申请279个，较去年同期增加了33.49%。结合公司2025年中报财务 数据，2025上半年公司在研发方面投入了100.95亿元，同比增17.48%。 证券之星消息，根据企查查数据显示宁德时代（300750）公布了一项国际专利申请，专利名为"电池单 体、电池装置和用电装置、负极极片的制备方法"，专利申请号为PCT/CN2025/100299，国际公布日为 2026年2月26日。 专利详情如下： 数据来源：企查查 以上内容为证券之星据公开信息整理，由AI算法生成（网信算备310104345710301240019号），不构成 投资建议。 ...

Group 1 - NIO Automotive Technology (Anhui) Co., Ltd. has applied for a patent titled "Negative Electrode Sheet, Secondary Battery, and Device," with publication number CN121483965A, and the application date is August 2024 [1] - The patent abstract indicates that the negative electrode sheet includes a current collector, a negative electrode active material layer, and an inorganic coating, with the inorganic coating's thickness ranging from 1nm to 200nm [1] - The application aims to improve electrolyte wettability, reduce battery charging DCR, enhance cycle life and high-temperature storage life, and increase battery safety performance through controlled thickness and quality of the inorganic coating [1] Group 2 - NIO Automotive Technology (Anhui) Co., Ltd. was established in 2020 and is located in Hefei City, primarily engaged in technology promotion and application services [1] - The company has a registered capital of 2.6 billion RMB and has invested in five enterprises, participated in 29 bidding projects, and holds 2,327 trademark records and 3,400 patent records [1] - Additionally, the company possesses 30 administrative licenses [1]

Core Insights - Contemporary Amperex Technology Co., Limited (CATL) has filed an international patent application for a negative electrode sheet, secondary battery, electric device, and hard carbon material along with its preparation method, with the application number PCT/CN2024/118333 and international publication date set for November 6, 2025 [1][2]. Patent Details - The patent application was submitted on September 11, 2024, and is classified under several international patent classification codes including H01M 4/133 and H01M 10/0525 [2]. - The negative electrode sheet includes a current collector and a film layer made of hard carbon material, which consists of a core and a carbon coating layer. The core is made of porous carbon with specific pore volume and adsorption capacity requirements [2]. R&D Investment and Patent Activity - In 2023, CATL has published a total of 1,280 international patent applications, marking a 20.41% increase compared to the same period last year [1]. - The company invested 10.095 billion yuan in research and development in the first half of 2023, reflecting a year-on-year increase of 17.48% [1].

Core Viewpoint - Chongqing Changan Automobile Co., Ltd. has applied for a patent related to a silicon-carbon anode slurry, preparation method, anode sheet, and battery, indicating a focus on innovation in battery technology [1] Company Overview - Chongqing Changan Automobile Co., Ltd. was established in 1996 and is primarily engaged in the automotive manufacturing industry [1] - The company has a registered capital of 992,179.9422 thousand RMB [1] - It has invested in 119 enterprises and participated in 5,000 bidding projects [1] - The company holds 3,129 trademark records and 5,000 patent records, along with 1,052 administrative licenses [1] Patent Details - The patent application, published as CN 120749125 A, was filed on August 2025 [1] - The patent involves a process that includes mixing sodium carboxymethyl cellulose, polyacrylic acid, and water to create a mixed gel, followed by the addition of a conductive agent and other materials to produce a silicon-carbon anode slurry [1]