A liquid-cooled energy storage system

The liquid-cooled energy storage system, with its upper and lower dual-chamber structure and multi-loop collaborative design, solves the problems of low heat dissipation efficiency and low space utilization of existing energy storage systems, achieving efficient and stable temperature control and reduced energy consumption, thus meeting the needs of high-density energy storage scenarios.

CN122091850APending Publication Date: 2026-05-26HEFEI HUAZHI ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI HUAZHI ENERGY TECH CO LTD
Filing Date
2026-04-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing thermal management solutions for energy storage systems suffer from low heat dissipation efficiency, low space utilization, and high energy consumption. Especially in high-power operation scenarios, PCS is prone to overheating, affecting equipment stability and lifespan. Furthermore, the structural layout is not suitable for high-density energy storage scenarios.

Method used

The liquid-cooled energy storage system adopts a dual-chamber structure. The liquid cooler is equipped with multiple supply and return liquid ports, and features a refrigeration system circuit, a battery cooling circuit, and a PCS cooling circuit. Combined with liquid cooling plates and multiple branch flow channels, it achieves integrated liquid cooling heat dissipation for the battery pack and PCS, optimizes the chamber layout, and is equipped with sensors and an automatic venting and draining structure.

Benefits of technology

It improves heat dissipation efficiency and temperature control accuracy, reduces system energy consumption, enhances equipment stability and space utilization, and adapts to the needs of different energy storage scenarios.

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Abstract

This invention discloses a liquid-cooled energy storage system, comprising a dual-compartment energy storage system cabinet. The upper sealed compartment houses the battery pack, while the lower ventilated compartment houses the energy storage converter and liquid chiller. The liquid chiller has dual-sided liquid supply and return ports, connecting the PCS (Power Supply System) to the battery pack. It incorporates three collaborative loops for cooling, battery cooling, and PCS cooling, sharing a common fan for energy saving. The aluminum alloy liquid cooling plate within the PCS has three branches with a 1:1:3 flow ratio, precisely adapting to the heat dissipation of each component. The system includes sensors, drain ports, and automatic exhaust valves, achieving integrated liquid cooling, precise temperature control, optimized layout for space saving, low energy consumption, high stability, and adaptability to multiple scenarios.
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