EV Front Body Structure With Side Frame Support for Collision Load Dispersion
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Solution Overview
Problem
Existing vehicle-body front structures struggle to effectively absorb impact loads in both head-on and offset collisions, as inclined pipe frames in prior designs collapse to the vehicle-width-direction outer sides, making it difficult to manage increasing impact loads.
Innovation Solution
A vehicle-body front structure for electric vehicles featuring a battery casing with a front-side battery frame, left and right side frames extending outward, and support portions that absorb impact loads by aligning with the load direction and using cross members to couple the frames, enhancing rigidity and dispersing loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the left pipe frame and right pipe frame are inclined toward vehicle-width-direction outer sides, then the extending direction of pipe frames agrees with offset collision input direction, but the pipe frames collapse to vehicle-width-direction outer sides in head-on collision
Solution Approach 1:
Cross members (15, 19) are pre-installed to connect the pipe frames (11, 12) to the front sub-frame (21) and to each other, creating a rigid spatial framework before collision occurs. This preliminary structural arrangement prevents the pipe frames from collapsing outward during head-on collisions by providing preemptive lateral support.
Solution Approach 2:
The vehicle body front structure combines different structural elements with complementary properties: inclined pipe frames for offset collision adaptability, a rigid front sub-frame for head-on collision resistance, and cross members for lateral stabilization. This composite structural approach allows each component to contribute its strengths to handle different collision scenarios.
Data Source
AI summary
A vehicle-body front structure for an electric vehicle includes a front-side battery frame which extends in a vehicle width direction, a pair of left and right side frames which extend from the front-side battery frame to a vehicle front to be positioned on vehicle-width-direction outer sides, a left-side support mounted on the front-side battery frame and supports the left side frame from the vehicle-width-direction outer side, and a right-side support mounted on the front-side battery frame and supports the right side frame from the vehicle-width-direction outer side.