CATL Obtains Battery Cell-Related Patent; Battery Cell Improves Connection and Structural Performance Through Structural Design

March 15 News: According to information from the National Intellectual Property Administration, CATL (Contemporary Amperex Technology Co. Limited) has applied for a patent titled “Battery Cell, Battery, and Power Supply Device,” with authorization announcement number CN223986616U, granted on March 10, 2026. The application number is CN202520173644.4, published on March 10, 2026, with an application date of January 26, 2025. Inventors include Cheng Qi, Cai Xianghu, Zhou Wenlin, and Zheng Yulian. The patent agency is China Council for the Promotion of International Trade Patent and Trademark Office, with patent agent Yan Na. The classification codes are H01M50/103, H01M50/176, H01M50/15.

Patent Abstract: The application discloses a battery cell, battery, and power supply device. The battery cell includes a top cover (210) with a cover sheet (211) having at least one heat-melt hole (2111), and a lower plastic component (230) with at least one heat-melt column (231). The heat-melt columns (231) are configured to align with the heat-melt holes (2111) and can be matched accordingly. Notably, at least one heat-melt hole (2111) includes at least one inverted step in its cross-section parallel to the depth direction. In the embodiment of the battery cell, the connection strength between the top cover and the lower plastic component is improved, enhancing the structural stability, safety, and lifespan of the battery cell.

Founded on December 16, 2011, CATL was listed on the Shenzhen Stock Exchange on June 11, 2018. Its registered and office addresses are both located in Ningde City, Fujian Province. It is a leading global provider of power battery systems, focusing on the research, development, and production of power and energy storage batteries, with strong technical capabilities and a complete industrial chain.

CATL’s industry classification is Power Equipment - Batteries - Lithium Batteries, involving concepts such as Kylin Batteries, solid-liquid batteries, Tencent Cloud, and others. The company mainly engages in R&D, manufacturing, and sales of power and energy storage batteries, with products applied across multiple fields and scenarios. It also involves battery materials and recycling businesses, with markets both domestically and internationally.

In 2025, CATL’s revenue reached 423.702 billion RMB, ranking 1st/2nd in the industry, far surpassing the second-ranked Boruiwei with 2.735 billion RMB, and exceeding the industry average and median of 213.219 billion RMB. Main business segments include power battery systems, accounting for 74.70% of revenue at 316.506 billion RMB. Net profit in 2025 was 76.786 billion RMB, ranking 1st/2nd, with the second-ranked Boruiwei at only 54.4961 million RMB, also above the industry average and median of 38.42 billion RMB.

Recent patent applications by CATL include:

[Remaining patents omitted for brevity]

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