The China National Intellectual Property Administration information shows that Guangzhou Songteng Hydrogen Energy Technology Co., Ltd. has applied for a patent titled "Time Sequence Coordination-Based Flexible Switching Control Method, System, and Device for Electrolyzer," with publication number CN121763685A and application date of December 2025.  

The patent abstract indicates that the invention discloses a time sequence coordination-based flexible switching control system, method, and device for an electrolyzer. In the system, a voltage detection circuit is used to collect the real-time voltage of a DC bus. A main controller receives the real-time voltage and, upon detecting that the real-time voltage of the DC bus remains below the minimum voltage threshold for a sustained duration, controls the output current of a power converter to zero, issues a relay closure command, and, after a preset waiting period, increases the output current of the power converter from zero to the steady-state operating value continuously according to a preset ramp function. This achieves a smooth and continuous transition from zero current to the set value, completely eliminating electrical and mechanical impacts, significantly reducing material costs and system complexity, while also avoiding voltage surges on the DC bus and ensuring stable operation of other equipment within the system.  

Tianyancha data reveals that Guangzhou Songteng Hydrogen Energy Technology Co., Ltd., established in 2015 and headquartered in Guangzhou, is an enterprise primarily engaged in research and experimental development. The company has a registered capital of 1 million RMB. According to Tianyancha's big data analysis, Guangzhou Songteng Hydrogen Energy Technology Co., Ltd. holds four trademark records, 15 patent records, and seven administrative permits.