Energy storage system and battery pack

CN224328747UActive Publication Date: 2026-06-05SUNGROW POWER SUPPLY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUNGROW POWER SUPPLY CO LTD
Filing Date
2025-05-12
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Traditional battery packs, when increasing energy density, struggle to meet miniaturization requirements for their cooling systems. Furthermore, the design of placing the liquid cooling plate at the bottom of the cell assembly cannot effectively address internal thermal management issues, impacting the safety and efficiency of the battery pack.

Method used

The liquid cooling plate is placed on the top surface of the battery cell assembly, making thermal contact with the battery cell assembly. It serves the dual functions of cooling and cover plate, eliminating the top side cover plate structure. A reinforced structure is adopted to ensure that the liquid cooling cover plate is tightly attached to the battery cell assembly. The heat exchange efficiency is improved by utilizing the principle of natural convection, and the fixed connection is enhanced by the reinforced structure and thermally conductive adhesive layer.

Benefits of technology

This technology enables the miniaturization of battery packs, improves heat transfer efficiency, reduces weight and material costs, enhances battery pack safety and energy density, and avoids the risks of stress deformation and fluid leakage of liquid cooling covers.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224328747U_ABST
    Figure CN224328747U_ABST
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Abstract

The application provides an energy storage system and a battery pack. The battery pack comprises a battery cell group, a support, a liquid cooling cover plate and a reinforcing structure. The battery cell group has a top surface. The battery cell group is fixed on the support. The liquid cooling cover plate is arranged on the top surface of the battery cell group and is in thermal contact with the top surface. The reinforcing structure comprises a fixing member which can be arranged on the liquid cooling cover plate and the support. The liquid cooling cover plate comprises a middle region in contact with the support and an edge region surrounding the middle region. The fixing member is arranged on the middle region to ensure that the liquid cooling cover plate is in close contact with the top surface of the battery cell group. The liquid cooling cover plate is arranged on the top surface of the battery cell group, and the functions of liquid cooling and the cover plate are considered at the same time. Therefore, the cover plate structure does not need to be arranged on the top side of the battery pack, the volume of the battery pack is reduced, and the miniaturization requirement of the product is met. Meanwhile, the reinforcing structure can press the liquid cooling cover plate against the top surface of the battery cell group, so that the battery cell group and the liquid cooling cover plate are closely attached together, and the heat of the battery cell group can be quickly conducted.
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