Vehicle Battery Support Structure With External Frame-Mounted Legs
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Solution Overview
Problem
Vehicles with batteries mounted in the engine compartment face challenges in supporting the battery without using a battery support leg inside the front side frame, necessitating a solution that allows stable support while reducing weight.
Innovation Solution
A battery mounting part support structure that includes a pair of support legs and a coupling member, where the support legs are positioned outside the front side frame and supported by its upper and side surfaces, with additional reinforcing brackets for stability and weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery support leg is disposed inside a front side frame, then the battery can be stably supported, but the device complexity increases and weight reduction becomes difficult
Solution Approach 1:
The support structure is divided into multiple discrete components: front support legs, rear support legs, and coupling members. Each component is simplified in design while collectively providing stable battery support, reducing individual part complexity while maintaining overall structural reliability
Solution Approach 2:
The coupling member serves multiple functions: it connects front and rear support legs, provides mounting surfaces for the battery, and integrates reinforcement features. This multi-functionality reduces the need for separate components, simplifying the overall device complexity while maintaining support stability
2Reliability
If a battery support leg is disposed inside a front side frame, then the battery can be supported, but the weight of the support structure increases
Solution Approach 1:
Reinforcement is applied locally only where structurally necessary - at the coupling member connections to the front side frame and at critical support points. This localized reinforcement maintains stability while minimizing overall material usage and weight compared to uniform reinforcement throughout the entire support structure
Solution Approach 2:
The support structure utilizes composite construction combining different material properties in strategic locations - high-strength materials at critical load-bearing connections and lighter materials in non-critical areas, achieving optimal weight-to-strength ratio
3Weight of stationary object
If support legs are positioned outside the front side frame, then weight can be reduced and positioning flexibility improved, but support stability may be compromised
Solution Approach 1:
The front support legs are merged with the front side frame structure through integrated coupling members that connect to the frame's upper and side surfaces. This merging provides stable support while allowing the legs to be positioned outside the frame, achieving both stability and weight reduction
4Ease of manufacture
If coupling members are used to connect support legs, then manufacturing ease is improved, but device complexity increases
Solution Approach 1:
The coupling member is designed as a multi-functional component that simultaneously connects front and rear support legs, provides battery mounting surfaces, and integrates reinforcement features. This consolidation reduces the total number of separate components while improving ease of manufacture through standardized, multi-purpose parts
Data Source
AI summary
Provided is a battery mounting part support structure of a vehicle, in which a pair of battery support legs can also be disposed at portions other than inside of a front side frame, which can stably support the pair of battery support legs and which can achieve reduction in weight. The battery mounting part support structure of the vehicle includes a front support leg 34 and a rear support leg 31, 32 that support a battery B and a coupling member 33 that couples the front support leg 34 and the rear support leg 32, and the front support leg 34 and the rear support leg 31, 32 are supported by an upper surface and a side surface 112 of a front side frame 11 on a front side and a rear side of the coupling member 33.