Battery Pack Seal Thickness Adjustment via Intermediary Fastener
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Solution Overview
Problem
Existing battery packs face challenges in improving the sealing performance of their accommodating spaces, particularly due to difficulties in accurately adjusting the thickness of the seal material.
Innovation Solution
The battery pack design includes an accommodating body with two mounting parts opposed via a seal material, where a first fastener is positioned between these parts and a second fastener fastens the mounting parts together, allowing for precise adjustment of the seal material thickness through the use of spacers with varying heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the seal material is simply disposed between the two mounting parts, then the structure is simple and easy to manufacture, but the thickness of the seal material cannot be accurately adjusted, resulting in poor sealing performance
Solution Approach 1:
The first fastener acts as an intermediary component between the two mounting parts, with its head serving as a precise thickness adjustment element. The head of the first fastener is positioned between the two mounting parts, and its height can be precisely controlled to adjust the thickness of the seal material, thereby achieving accurate sealing without increasing overall structural complexity
Solution Approach 2:
The first fastener is preliminarily positioned and fixed to one of the mounting parts before the second fastener is installed. This preliminary action establishes a precise reference height for the seal material thickness, allowing the seal material to be accurately positioned before the final fastening operation completes the assembly
Data Source
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AI summary
A battery pack (10) comprises: a housing (200) which includes a first lower mount portion (212a) and a second lower mount portion (214a1) that oppose each other with a lower seal material (232) therebetween; a battery module (100) housed in the housing (200); a lower rivet nut (242) which is fastened to at least one of the first lower mount portion (212a) and the second lower mount portion (214a1), and at least a part of which is positioned between the first lower mount portion (212a) and the second lower mount portion (214a1); and a lower bolt (244) that is fastened to the lower rivet nut (242) and fastens the first lower mount portion (212a) and the second lower mount portion (214a1) to each other.