DFAC(SH:600006) Jin Rong Jie·2026-02-04 02:59Group 1 - Dongfeng Motor Corporation has applied for a patent titled "A Battery Thermal Management Method, System, Device, and Readable Storage Medium," with publication number CN121425041A, and the application date is December 2025 [1] - The patent describes a battery thermal management method that includes obtaining the required power for preheating the power battery pack when preheating conditions are met, calculating the preheating current based on the required power and the current voltage of the battery pack, and controlling the DC charging unit to output the preheating current [1] - The method involves real-time monitoring of the battery pack's temperature to determine if it has reached a preset temperature threshold, and if so, normal charging is executed; if not, the preheating current is adjusted until the temperature threshold is met, ensuring safety and precision during the preheating process [1] Group 2 - Dongfeng Motor Corporation was established in 1999 and is located in Xiangyang, primarily engaged in the automotive manufacturing industry [2] - The company has a registered capital of 2 billion RMB and has made investments in 16 enterprises, participated in 3,657 bidding projects, and holds 2,986 patent records [2] - Additionally, the company has 155 trademark records and 773 administrative licenses [2]