北汽新能源申请直流充电系统及其充电方法专利，降低用户充电成本

Group 1 - The core point of the news is that Beijing New Energy Automobile Co., Ltd. has applied for a patent related to a "DC charging system and its charging method," which aims to enhance charging efficiency and reduce costs for electric vehicle users [1]. Group 2 - The patent application includes a unidirectional AC/DC converter for converting AC to DC, or a bidirectional AC/DC converter for both converting AC to DC and feeding power back to the AC grid [1]. - The system features multiple DC charging terminals that adjust the charging power based on the vehicle's energy needs, thereby optimizing charging costs and promoting private charging services [1]. Group 3 - Beijing New Energy Automobile Co., Ltd. was established in 2009 and is primarily engaged in the automotive manufacturing industry, with a registered capital of approximately 1.51 billion RMB [2]. - The company has invested in 28 enterprises and participated in 1,263 bidding projects, holding 676 trademark records and 5,000 patent records [2].