A bearing frame, battery pack, vehicle and manufacturing method

By setting a protective layer and internal support material at the geometric connection of the load-bearing frame, the weight and cost problems caused by increasing the wall thickness are solved, achieving lightweight design and stress concentration suppression, and improving the impact resistance and safety of the battery pack.

CN122225104APending Publication Date: 2026-06-16DONGFENG MOTOR GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGFENG MOTOR GRP
Filing Date
2026-03-20
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

In existing technologies, increasing the wall thickness of the load-bearing frame to improve resistance to mechanical impact leads to an increase in battery pack weight and manufacturing costs. At the same time, it can easily cause stress concentration at geometric joints, which weakens structural safety.

Method used

A protective layer is set at the geometric connection of the load-bearing frame, and the through holes are covered and filled with high-strength material. Combined with the internal support material, a locking structure is formed to improve impact resistance and reduce weight and cost by thinning the wall thickness.

Benefits of technology

While ensuring resistance to mechanical impact, we reduce material consumption, lower battery pack weight and manufacturing costs, and suppress stress concentration to improve overall structural safety.

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    Figure CN122225104A_ABST
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Abstract

The application discloses a bearing frame, a battery pack, a vehicle and a manufacturing method, and belongs to the technical field of battery packs. On the basis of guaranteeing good mechanical impact resistance of the bearing frame, the wall thickness of the bearing frame is reduced, so that the overall weight and manufacturing cost of the battery pack are reduced, and the generation of stress concentration is inhibited. The bearing frame comprises a frame body and a protective layer. The protective layer covers at least the outer surface of the geometric connection of the frame body. In the case of meeting the same mechanical impact resistance performance, the wall thickness of the frame body covered with the protective layer is smaller than the wall thickness of the frame body at the corresponding position without the protective layer.
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