Body structure

By setting staggered floor side crossbeams and battery side crossbeams in the body structure of electric vehicles and using pillars and lower side beams to disperse the collision load, the problem of insufficient protection of battery cells in side collisions is solved and the safety of the battery is improved.

CN115489621BActive Publication Date: 2025-09-12MAZDA MOTOR CORP
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Patent Information

Application Number
CN202210368781.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-06-01
Filing Date
2022-04-08
Publication Date
2025-09-12
Estimated Expiration
2042-04-08

AI Technical Summary

Technical Problem

In the prior art, when an electric vehicle is involved in a side collision, the collision load is concentrated on the floor panel and the crossbeam, resulting in insufficient protection of the battery unit. In particular, when colliding with a large obstacle, the battery unit is easily damaged.

Method used

In the body structure of an electric vehicle, the floor side crossbeam and the battery side crossbeam are staggered in the front-to-rear direction of the vehicle, and the collision load is dispersed through the cooperation of the pillars and the lower side beams to enhance the protection performance of the battery box.

Benefits of technology

By dispersing the collision load, the battery's protection performance is improved, ensuring the battery's safety during side collisions and avoiding damage to the battery cells.

✦ Generated by Eureka AI based on patent content.
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Abstract

A vehicle body structure improves battery protection performance by distributing the collision load input during a side collision of a vehicle to the vehicle body and battery box. The vehicle body structure comprises: floor side cross members (110A, 110B, 110C) mounted on a floor panel (70) and extending along the floor panel (70) in the vehicle width direction; and battery side cross members (25A, 25B, 25C) disposed on a battery box (10) and extending in the vehicle width direction. When viewed from the side of the vehicle, the floor side cross members (110A, 110B, 110C) and the battery side cross members (25A, 25B, 25C) are offset in the vehicle front-rear direction.
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