Energy storage device and electric appliance

By setting a partition to separate the liquid cooling chamber in the energy storage device, the coolant flows through the upper and lower parts of the energy storage unit successively, which solves the problems of uneven battery temperature and low heat dissipation efficiency, and achieves the effects of efficient and uniform heat dissipation and reduced production costs.

CN117039266BActive Publication Date: 2026-06-26XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
Filing Date
2023-09-08
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing energy storage systems, the concentrated heat of the battery leads to uneven temperature distribution, affecting safety and lifespan, and the heat dissipation efficiency of cold plate liquid cooling devices is low.

Method used

The liquid cooling chamber is divided into a first liquid cooling chamber and a second liquid cooling chamber by a partition. The coolant flows through the upper and lower parts of the energy storage unit in sequence, forming a simple and wide flow channel through the inlet, connecting hole and outlet, and directly contacts the side wall of the energy storage unit for heat exchange.

Benefits of technology

This achieves overall temperature uniformity and efficient heat dissipation in the energy storage device, improving production efficiency and reducing production costs, while avoiding the use of thermally conductive adhesive and heat transfer bottlenecks.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN117039266B_ABST
    Figure CN117039266B_ABST
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Abstract

The application discloses an energy storage device and an electric equipment. The energy storage device comprises a box body, a top cover, a partition plate and a plurality of energy storage units. The box body comprises a liquid cooling cavity, a liquid inlet and a liquid outlet which are communicated with the liquid cooling cavity. The partition plate comprises a plurality of fixed through grooves and a communication hole. The plurality of fixed through grooves are arranged at intervals and correspond to the plurality of energy storage units one by one. The communication hole is located at the edge of the partition plate. The partition plate is arranged in the liquid cooling cavity to divide the liquid cooling cavity into a first liquid cooling cavity and a second liquid cooling cavity. The first liquid cooling cavity is communicated with the liquid inlet, and the second liquid cooling cavity is communicated with the liquid outlet. Along the width direction of the box body, the communication hole is away from the side of the box body provided with the liquid outlet and the liquid inlet and is communicated with the first liquid cooling cavity and the second liquid cooling cavity. The energy storage unit is arranged in the fixed through groove and positioned in the liquid cooling cavity. The part of the energy storage unit close to the pole is located in the first liquid cooling cavity, and the other part of the energy storage unit is located in the second liquid cooling cavity.
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Citation Information

Patent Citations

  • Battery module, battery module assembly and heat exchange device

    CN113437402A

  • Battery cell and battery assembly

    CN115863897A