Vehicle Battery Fastening Structure for Existing Body Compatibility
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Solution Overview
Problem
Conventional electric vehicles face challenges in securely fastening large batteries to the vehicle body, leading to increased manufacturing costs and difficulties in adapting existing internal combustion engine vehicles to electric vehicle technology.
Innovation Solution
A structure comprising a carrier part with first and second members connected to the vehicle body and a battery case with reinforcing members, where the case is fastened to the vehicle through a combination of lateral, longitudinal, and reinforcing members, and a fastening member extending upward from the case for direct bonding to the vehicle body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery is directly fastened to the lower portion of the vehicle body, then the fastening structure is simple, but it is difficult to fasten the battery to conventionally developed vehicle bodies and requires a new dedicated body design
Solution Approach 1:
The patent introduces a carrier part as an intermediary component between the battery and the vehicle body. This carrier part includes first members connected to the vehicle body and second members connected to the battery case, enabling the battery to be fastened to conventionally developed vehicle bodies without requiring a new dedicated body design. The carrier part acts as a mediator that bridges the compatibility gap between existing vehicle structures and battery mounting requirements.
2Reliability
If a new dedicated body design is created for fastening the battery, then the battery can be securely fastened, but the manufacturing cost increases and adding a new lineup to existing vehicle platforms becomes difficult
Solution Approach 1:
The patent divides the fastening system into separate modular components: a carrier part with first and second members, and a battery case with corresponding connection points. This segmentation allows the carrier part to be designed and manufactured independently as a universal mounting system that can be adapted to different vehicle platforms without redesigning the entire vehicle body, thereby reducing manufacturing costs while maintaining fastening security.
Solution Approach 2:
The carrier part is designed as a universal mounting system that can be applied to conventionally developed vehicle bodies across different platforms. The first members connect to the vehicle body while the second members connect to the battery case, creating a multi-functional interface that works with existing vehicle structures. This universality eliminates the need for new dedicated body designs for each vehicle lineup, reducing overall manufacturing costs.
3Ease of operation
If the battery is fastened using only lateral and longitudinal members, then the installation is straightforward, but the fastening robustness and security are insufficient
Solution Approach 1:
The patent enhances the fastening system by adding reinforcing members at critical locations where additional strength is needed. These reinforcing members are strategically positioned to strengthen the connection between the carrier part and the battery case without complicating the overall installation process. The local reinforcement provides enhanced robustness precisely where required while maintaining the straightforward installation characteristics of the original lateral and longitudinal member configuration.
Data Source
AI summary
A structure for fastening a battery to a vehicle includes: a carrier part including a pair of first members that is disposed at a lower portion of the vehicle in a longitudinal direction of the vehicle and bonded to both sides of a vehicle body, respectively, and a plurality of second members the pair of first members in contact with the pair of first members; and a battery having a case that houses a plurality of battery cells, in which a part of the case is connected to the first member, and the other part of the case is connected to the second member.