Battery End Cover Assembly With Dual-Gap Thermal Isolation
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Solution Overview
Problem
During battery assembly, the sealing member is easily damaged by the high temperature of the plastic member, leading to instability and potential short circuits.
Innovation Solution
An end cover assembly is designed with a first gap surrounding an outlet hole, where a sealing member fills one side close to the outlet hole and a plastic member fills the other side, creating a second gap that isolates the sealing member from the plastic member, preventing damage from high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing member and plastic member are arranged adjacent to each other in the battery assembly, then the connection stability is improved, but the sealing member is damaged by high temperature from the plastic member
Solution Approach 1:
The patent introduces a first gap as an intermediary space between the sealing member and plastic member. This gap acts as a thermal buffer zone that prevents direct heat transfer from the high-temperature plastic member to the sealing member, thereby resolving the contradiction between maintaining connection stability and preventing thermal damage.
Solution Approach 2:
The patent segments the assembly space by creating distinct regions: the first gap separates the sealing member from the plastic member, and the second gap further isolates the sealing member. This segmentation strategy allows the components to maintain their functional proximity while preventing harmful thermal interaction.
2Object-affected harmful factors
If a gap is created between the sealing member and plastic member to prevent thermal damage, then the sealing member is protected, but the connection stability may be compromised
Solution Approach 1:
The patent uses dual gap segmentation (first gap and second gap) to create sufficient separation between the sealing member and plastic member. This ensures thermal protection while maintaining overall structural integrity through the distributed gap configuration that preserves connection stability.
Solution Approach 2:
The gaps are strategically positioned at specific locations where thermal protection is most needed, while other regions maintain direct contact or close proximity for structural stability. This localized application of spacing resolves the contradiction between protection and stability.
Data Source
AI summary
The present disclosure discloses an end cover assembly, an energy storage device and electrical equipment. The end cover assembly includes an end cover provided with an outlet hole penetrating therethrough, an electrode terminal arranged on one side of the end cover, a sealing member including a first sealing portion and a plastic member including a first plastic portion. A projection, on the end cover of the electrode terminal along a thickness direction of the end cover covers the outlet hole, and a first gap surrounding the outlet hole is formed between the electrode terminal and the end cover. The first sealing portion fills one side of the first gap close to the outlet hole. The first plastic portion fills one side of the first gap away from the outlet hole; and a second gap is formed between the first sealing portion and the first plastic portion.