en.Wedoany.com Reported - The oil-immersed liquid cooling charging system jointly developed by LINGCHONG New Energy Technology Co., Ltd. and PetroChina Karamay Petrochemical Co., Ltd. has passed the scientific and technological achievement appraisal organized by the China Electricity Council. The appraisal committee determined that the overall technology of the project has reached the international advanced level, filling a technological gap in the global field of oil-immersed liquid cooling charging.
The appraisal committee consisted of nine experts from various fields, including Jia Junguo, Chief Expert of the China Energy Research Society; Professor Song Weizhang from the School of Electrical Engineering, Xi'an University of Technology; the Energy Bureau of the Shaanxi Provincial Development and Reform Commission; Chang'an University; the China Automotive Technology and Research Center's New Energy Vehicle Testing Center (Tianjin) Co., Ltd.; the China Electricity Council; the Shaanxi Electric Power Industry Association; PetroChina Changqing Petrochemical Company; and Shanghai Lianlian Ruike. The members covered multiple domains such as electric power and energy, electrical research, energy management, automotive testing, and petroleum refining.
To address industry pain points such as low heat dissipation efficiency of new energy charging equipment, poor adaptability to extreme environments, short equipment lifespan, high operation and maintenance costs, and high operational noise, LINGCHONG New Energy and PetroChina Karamay Petrochemical Co., Ltd. conducted a two-year joint technical research effort. The R&D team focused on the core technology of oil-immersed liquid cooling charging, carrying out theoretical research, material development, structural optimization, and prototype testing. They overcame multiple technical challenges, including cooling medium formulation, uniform flow heat dissipation design, and equipment protection optimization. Through hundreds of simulation experiments and on-site validation tests, the project completed the development and implementation of a full set of core technology systems and has applied for 37 national patents.
During the appraisal meeting, the committee listened to the project team's results report, conducted on-site inspections of the project's demonstration operation site, and reviewed supporting materials including the technical research report, comparative analysis report of similar domestic and international technologies, third-party test reports, user reports, and technology novelty search reports. After inquiries, discussions, and comprehensive evaluation, the committee recognized the project's technological innovation, engineering practicality, and industrial value, concluding that the overall technical level of the achievement is at the international advanced level.
Leveraging independent R&D, the project innovatively developed a dedicated mineral oil-based coolant for charging piles, an immersion-type liquid cooling charging module, and an immersion-type liquid cooling charging system, differentiating itself from traditional cold plate liquid cooling and integrated machine immersion liquid cooling technical solutions in the industry. Power electronic devices are directly immersed in the mineral coolant, resulting in higher and more uniform heat dissipation efficiency. The modular design and IP68 protection level enhance environmental reliability, operational safety and stability, and service life, while reducing operation and maintenance costs. The cooling system adopts an intelligent control strategy, lowering overall energy consumption and noise. The coolant is non-toxic and biodegradable, making it adaptable to multiple application scenarios.
The project's products have been successfully applied in regions such as Xinjiang, Shaanxi, and Jiangsu, and can be used in large urban ultra-fast charging stations, highway network replenishment stations, integrated oil and gas energy stations, and dedicated commercial vehicle charging stations. The products are also adaptable to special operating conditions such as high altitudes, coastal salt spray, desert dust, extreme cold, and high temperatures, covering diverse fields including ports, airports, industrial park solar-storage-charging integrated projects, and heat dissipation for energy storage equipment.
