Vehicle Power Source Mounting Reinforcement Structure
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Solution Overview
Problem
In hybrid and electric vehicles, simply fixing the battery stack to the vehicle's bottom face results in insufficient fixing strength, especially when multiple battery units are stacked, and existing solutions require dedicated space for fixing members, reducing trunk room capacity.
Innovation Solution
A structure that incorporates a reinforcing member extending in the left-right direction of the vehicle, fixed to both the power source apparatus and the vehicle body, allowing efficient use of space and enhancing fixing strength by placing the reinforcing member above the battery stack, adjacent to the seat, and utilizing it to absorb or provide heat to the power storage elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a battery stack is simply fixed to the vehicle's bottom face, then the installation process is simple, but the fixing strength is insufficient
Solution Approach 1:
The reinforcing member extends in the left-right direction (width direction) of the vehicle, perpendicular to the front-back direction, creating a two-dimensional fixing structure. This dimensional change allows the reinforcing member to span across the battery stack and connect to wider portions of the vehicle body, significantly improving fixing strength without complicating the installation process
2Strength
If a fixing member is placed between the battery stack and trunk room to improve fixing strength, then the fixing strength is improved, but the trunk room space is reduced
Solution Approach 1:
The fixing structure is segmented into two functional parts: the reinforcing member that provides structural strength and the fixing members that secure the battery stack. The reinforcing member is positioned in the width direction rather than the front-back direction, separating the structural reinforcement function from the space-occupying fixing function, thereby maintaining trunk room capacity while achieving sufficient fixing strength
3Power
If multiple battery units are stacked to increase power capacity, then the power output is improved, but the fixing strength becomes insufficient
Solution Approach 1:
As battery units are stacked vertically to increase power capacity, the reinforcing member is introduced extending in the left-right direction, perpendicular to both the vertical stacking direction and the front-back vehicle direction. This creates a three-dimensional fixing structure that stabilizes the stacked battery units against displacement in multiple directions, maintaining fixing strength even as power capacity increases through stacking
Data Source
AI summary
A structure for mounting a power source apparatus includes a power source apparatus mounted on a vehicle, and a reinforcing member configured to reinforce connection between the power source apparatus and a vehicle body. The power source apparatus has a power source unit and a device fixed to an upper face of the power source unit and having a length in a front-back direction of the vehicle smaller than a length of the power source unit. The reinforcing member extends in a left-right direction of the vehicle and is fixed at different portions to the power source apparatus and the vehicle body in space above the power source unit and adjacent to the device in the front-back direction of the vehicle.