Recently, the second "Chuyun Cup" Innovation and Entrepreneurship Competition and Full-Scenario Open Application Competition was held in Guangdong. Sichuan Jinshi Technology Co., Ltd. brought a supercapacitor + lithium battery composite energy storage system solution, showcasing high-power energy storage technology adapted to the new power system for the Guangdong-Hong Kong-Macao Greater Bay Area.

As the construction of new power systems advances, the power grid faces challenges such as reduced equivalent inertia and frequent frequency disturbances. Traditional standalone lithium battery storage struggles to handle high-frequency charge and discharge cycles, suffering from rapid degradation and insufficient AGC frequency regulation tracking accuracy. Direct participation of thermal power units in frequency regulation also exacerbates mechanical wear and tear. There is an urgent market need for composite energy storage technology solutions that balance power response and energy storage capabilities.

Jinshi Technology's composite energy storage system in this competition divides the two types of energy storage units by function: supercapacitors handle high-frequency, high-power instantaneous charge and discharge impacts, while lithium batteries take on long-term steady-state energy storage, leveraging their respective strengths and avoiding weaknesses. The solution is primarily aimed at high-power application scenarios such as grid frequency regulation, distribution network peak shaving, and user-side power quality improvement.

At the technical implementation level, the solution relies on the company's complete industrial chain foundation of "materials, components, equipment, and applications", supported by a three-tier CMS management system, multi-loop voltage monitoring, and active liquid cooling temperature control. It achieves millisecond-level response and improves the tracking accuracy of AGC commands for the power grid. The equipment is adaptable to complex on-site conditions such as humidity, dust, and wide temperature ranges. Currently, the core components of the project have passed third-party authoritative testing, holding over ten core patents. The company possesses a professional electrochemistry laboratory and a pilot production line, plans to complete benchmark demonstration project verification within 12 months, and will progressively promote industrial implementation.

Behind the project is a professional R&D team covering energy storage materials, device development, system integration, and engineering quality control, with the capability for full-chain energy storage R&D and transformation. Jinshi Technology hopes to leverage the platform of this competition to fully familiarize industries and scenario resources in Guangdong and the Greater Bay Area with the company's composite energy storage technology solutions, deepen industrial alignment, facilitate supply-demand linkage and project cooperation implementation, while promoting the localization of the supercapacitor industry chain, providing feasible energy storage technology options for the new power system, and serving the "dual carbon" construction.