Battery Mounting Bracket With Guide Bolt For PBV Chassis
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Solution Overview
Problem
The frequent removal and installation of high-voltage batteries in electric vehicles lead to mounting bracket deterioration, requiring a solution that ensures easy replacement, maintains battery capacity, and provides a stable mounting state.
Innovation Solution
A battery mounting structure featuring a chassis cross member with a curved 'W' cross-section, a detachable mounting bracket guided by a guide bolt, and fastening bolts that securely attach the battery case to the mounting bracket, allowing for accurate assembly and easy replacement of the bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mounting bracket is made detachable for easy battery replacement, then the ease of operation is improved, but the reliability of the mounting structure deteriorates due to frequent assembly and disassembly
Solution Approach 1:
The mounting structure is divided into separable components: the mounting bracket and the battery case. The bracket can be detached from the battery case for easy replacement, while maintaining a reliable connection during operation through the fastening bolt and guide bolt mechanism.
Solution Approach 2:
The mounting bracket transitions between static (during operation) and dynamic (during replacement) states. The guide bolt allows for easy insertion and removal, enabling the bracket to be dynamically reconfigured or replaced when damaged.
2Volume of moving object
If the mounting bracket volume is reduced to accommodate more batteries, then the volume efficiency is improved, but the strength of the mounting structure deteriorates
Solution Approach 1:
The mounting bracket utilizes a curved cross-section design that optimizes structural strength while minimizing volume. The curved geometry provides enhanced rigidity and load-bearing capacity despite the reduced size of the bracket.
3Ease of operation
If the fastening system is simplified for quick battery replacement, then the ease of operation is improved, but the strength of the connection deteriorates
Solution Approach 1:
The guide bolt is pre-positioned on the mounting bracket to guide the battery case into the correct position during installation. This preliminary positioning action ensures proper alignment before the fastening bolt secures the connection, enabling quick replacement while maintaining connection strength.
Solution Approach 2:
The guide bolt acts as an intermediary element that facilitates easy battery replacement by providing alignment guidance, while the fastening bolt provides the actual strong connection. This intermediary mechanism enables both ease of operation and connection strength.
4Adaptability or versatility
If the mounting bracket is designed for frequent removal and installation, then the adaptability is improved, but the manufacturing precision requirements worsen due to wear and alignment issues
Solution Approach 1:
The guide bolt provides pre-established alignment guidance that compensates for potential wear and manufacturing variations. By guiding the battery case into position before fastening, the system maintains assembly precision even after multiple replacement cycles.
Data Source
AI summary
A battery mounting structure includes a chassis cross member including a curved cross-section and provided on the lower side of a floor panel; a mounting bracket detachably mounted to a lower side of the chassis cross member while an assembly position of the mounting bracket is guided; and a fastening bolt that passes through a battery case located under the mounting bracket from below the battery mounting structure and is then fastened to the mounting bracket, supporting the battery case with respect to the mounting bracket.