Battery Housing Sealing Structure for Special-Shaped Cell Spaces
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Solution Overview
Problem
Existing energy storage devices face challenges in achieving effective sealing between the first and second housings, particularly in special-shaped space structures, leading to potential sealing failures and reduced performance.
Innovation Solution
The implementation of abutting members and a sealing element within cavities of the housings, where the abutting members are formed by bending the side portions of the housings, allowing seamless connection and enhanced sealing performance, regardless of the shape of the housing structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing element is provided between the first housing and the second housing, then sealing between the housings is realized, but the sealing performance deteriorates in special-shaped space structures
Solution Approach 1:
The sealing structure is divided into multiple components: a sealing element and two abutting members (first abutting member in the first housing, second abutting member in the second housing). This segmentation allows each component to perform its specific function independently, enabling the sealing system to adapt to various housing shapes including special-shaped structures.
Solution Approach 2:
The abutting members serve as intermediary elements between the housings and the sealing element. These abutting members provide stable support and positioning for the sealing element, ensuring reliable sealing performance even in special-shaped space structures where direct sealing between housings would be difficult.
2Strength
If the first abutting member is welded to the first side portion, then connection strength is improved, but manufacturing complexity increases
Solution Approach 1:
The first abutting member is formed by bending the first side portion of the first housing, merging the side portion and the abutting member into a single integrated component. This eliminates the need for separate welding operations, reducing manufacturing complexity while maintaining connection strength through seamless integration.
Solution Approach 2:
The abutting member is formed by bending (curving) the side portion of the housing. This curvature transformation allows the flat side portion to be shaped into a three-dimensional abutting structure that provides stable support for the sealing element without requiring additional welding or assembly steps.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
An energy storage device includes a first housing (1), provided with a first cavity (1s), the first housing (1) including a first abutting member (101) located in the first cavity (1s); a second housing (2), provided with a second cavity (2s) and a second abutting member (201), the second abutting member (201) being connected to the second housing (2); and a sealing element (3), located in the first cavity (1s), the sealing element (3) being connected between the first abutting member (101) and the second abutting member (201), where the first cavity (1s) and the second cavity (2s) communicate to form a first space (12s), and the first space (12s) is configured to accommodate a cell assembly and/or an electrical assembly (4).