Integrated Battery Pack Top Cover Venting to Reduce Leakage Risk
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Solution Overview
Problem
Existing battery packs face increased costs and complexity due to separate explosion-proof valves, which require additional materials, assembly processes, and testing, leading to higher production costs and risks of leakage.
Innovation Solution
An explosion-proof valve is integrated into the top cover, forming a single unit with the top cover body, reducing parts and assembly steps, enhancing airtightness, and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate explosion-proof valve is used, then the pressure relief function is achieved, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The explosion-proof valve body is integrated with the top cover body into a single molded component, merging two previously separate parts. This reduces the number of assembly steps, eliminates the need for separate sealing components, and simplifies the overall structure while maintaining the pressure relief function through the breathable film
2Reliability
If a separate explosion-proof valve is used, then the pressure relief function is achieved, but the manufacturing cost increases
Solution Approach 1:
By combining the explosion-proof valve body and top cover body into a single integrated component, the patent reduces the total number of parts that need to be manufactured, stored, and assembled. This integration lowers material costs, reduces manufacturing complexity, and eliminates additional sealing components, thereby reducing overall manufacturing cost while maintaining the essential pressure relief function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This integration reduces manufacturing and assembly costs, increases production efficiency, enhances product quality and safety, and improves user experience by minimizing leakage risks and assembly complexity.
Implementation Method 1
an explosion-proof valve body, including a pressure relief channel and a breathable film, in which the pressure relief channel and the top cover body are integrally molded, an end of the pressure relief channel is in communication with an interior of the accommodating chamber, an opposite end of the pressure relief channel is in communication with an exterior of the accommodating chamber
Data Source
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Figure 5
AI summary
The present disclosure relates to an explosion-proof valve integrated in a top cover and a battery pack, including: a top cover body (1), provided with an accommodating chamber (11); an explosion-proof valve body (2), including a pressure relief channel (21) and a breathable film (22), in which the pressure relief channel (21) and the top cover body (1) are integrally molded, an end of the pressure relief channel (21) is in communication with an interior of the accommodating chamber (11), an opposite end of the pressure relief channel (21) is in communication with an exterior of the accommodating chamber (11) and the breathable film (22) is assembled to the end of the pressure relief channel (21).