定向泄压的电池模组

By setting directional windows and mica plates on the side panels of the battery pack, the problems of unreliable pressure relief valves and insufficient high-temperature resistance in battery modules are solved, achieving high-temperature resistant and reliable directional pressure relief control, and reducing manufacturing complexity and cost.

CN224520116UActive Publication Date: 2026-07-17LUOYANG E-ENERGY STORAGE & TRANSFORMATION SYST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUOYANG E-ENERGY STORAGE & TRANSFORMATION SYST CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the prior art, the pressure relief valve of the battery module is unreliable and has limited high temperature resistance in soft-pack batteries, resulting in short directional pressure relief control time and inability to effectively control the pressure relief direction during battery thermal runaway.

Method used

A directional window is set on the side panel of the battery pack, and a mica plate is installed. The mica plate has a weak area. By breaking the mica plate and the weak point, it can play a role in directional pressure relief. At the same time, an adhesive layer is set between the side panel and the battery cell to form a pressure relief port.

Benefits of technology

This improved the high-temperature resistance and reliability of the battery pack, enabled long-term directional pressure relief control, and reduced manufacturing difficulty and cost.

✦ Generated by Eureka AI based on patent content.

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Abstract

本实用新型属于锂电池技术领域，公开了一种定向泄压的电池模组，包括，包括并排布置的多个电芯；包裹在多个所述电芯外的壳体至少包括一对端板和一对侧板；一对所述端板夹持在多个所述电芯的前后两侧；一对侧板贴合多个所述电芯左右两侧；至少一个所述侧板上设有定向窗口；所述定向窗口上安装有云母板；所述云母板中设有薄弱区；在所述侧板与所述电芯之间的间隙处设有胶层，所述胶层设有正对所述定向窗口的泄压口。本实用新型通过云母板作为定向泄压的窗口，具有良好的耐高温性和绝缘性，工作可靠，并且制造简单，成本低。
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Claims

1. A battery module with directional pressure relief, comprising a plurality of battery cells (1) arranged side by side; a housing wrapping around the plurality of battery cells (1); characterized in that: The shell comprises at least a pair of end plates (2) and a pair of side plates (3); a pair of the end plates (2) are clamped on the front and back of the plurality of battery cells (1); a pair of side plates (3) are attached to the left and right of the plurality of battery cells (1); at least one of the side plates (3) is provided with a directional window (31); the directional window (31) is provided with a mica plate (32); the mica plate (32) is provided with a weak area; a gap between the side plate (3) and the battery cell (1) is provided with a glue layer (4), and the glue layer (4) is provided with a pressure relief port (41) opposite to the directional window (31).

2. The battery module of claim 1, wherein: The mica plate (32) installed on the directional window (31) has multiple layers.

3. The battery module of claim 1, wherein: Both of the side plates (3) are provided with the directional window (31).

4. The battery module of claim 1, wherein: The mica plate (32) is installed on the side plate (3) by adhesion.

5. The battery module of claim 1, wherein: A first buffer strip is pasted along the inner periphery of the side plate (3), and a second buffer strip is pasted around the directional window (31), so as to form the glue layer (4) with the pressure relief port (41) at the gap.

6. The battery module of claim 1, wherein: The directional window (31) is rectangular; and the corresponding mica plate (32) is rectangular.

7. The battery module of claim 6, wherein: The weak area is in the middle of the mica plate (32).