Battery pack, preparation method thereof and power utilization device

By setting up a housing and battery module within the battery module, and using the connecting channels and protruding contoured surfaces within the housing to guide the foaming of the foaming adhesive material, the problem of insufficient uniformity of the foaming adhesive in flat-lying stacked battery modules is solved, achieving better fixing effect and structural simplification.

CN121484367APending Publication Date: 2026-02-06HUIZHOU EVE POWER CO LTD
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Patent Information

Application Number
CN202511353083.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-19
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

In the existing technology, the foaming uniformity of the foaming adhesive in the flat-lying stacked battery module is insufficient, resulting in poor fixation effect and complex structure, which increases labor costs.

Method used

By setting a housing and battery module in the battery module, the cell group is spaced apart from the inner wall of the cavity, forming abundant communication channels. In the adjacent cell layer, the spacing between cells near the opening is greater than the spacing between cells far from the opening. The protrusion's contoured surface guides the foaming of the foaming material, reducing resistance and improving the uniformity of the foaming material.

Benefits of technology

It improves the fixation effect of the foam between the battery cell assembly and the inner wall of the housing cavity, simplifies the structure, reduces foaming resistance, and enhances the uniformity and fixation effect of the foam.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a battery pack, a preparation method thereof and a power utilization device, and aims to solve the technical problem of nonuniform foaming of polystyrene foam. The battery pack comprises a box body and a battery module; one end of the box body is provided with an opening and an accommodating cavity communicated with the opening is formed in the box body; the battery module is arranged in the accommodating cavity; the battery module comprises a battery cell group and polystyrene foam, the battery cell group is separated from the inner wall of the accommodating cavity, and the polystyrene foam is filled in the battery cell group and between the battery cell group and the inner wall of the accommodating cavity; the battery cell group comprises a plurality of battery cell layers which are sequentially distributed at intervals in the first direction, each battery cell layer comprises a plurality of battery cells which are sequentially distributed at intervals in the second direction, the battery cells extend in the third direction, every two of the first direction, the second direction and the third direction intersect, and the first direction is the direction from the bottom wall of the containing cavity to the opening; in the two adjacent battery cell layers, the distance between the two adjacent battery cells in the battery cell layer close to the opening is greater than the distance between the two adjacent battery cells in the battery cell layer far away from the opening.
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