Battery Pack CCS Peripheral Sealing for Compact Battery Box Integration
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Solution Overview
Problem
The sealing design of existing battery packs occupies internal space, which is not compatible with the demand for a compact battery pack structure.
Innovation Solution
A sealant component is provided between the battery box and the CCS assembly, extending along the peripheral direction to seal the assembly clearance, eliminating the need for additional space-consuming sealing ribs and enhancing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing ribs are used in the sealing structure, then sealing effectiveness is improved, but space utilization deteriorates
Solution Approach 1:
The sealing rib is extracted from the battery box structure and relocated to the CCS assembly. This extraction removes the space-occupying element from the battery box while preserving the sealing function through the sealant component that fills the assembly clearance between the CCS assembly and battery box.
Solution Approach 2:
A sealant component is introduced as an intermediary substance between the CCS assembly and the battery box. This sealant component fills the assembly clearance and provides the sealing function that previously required the sealing rib structure, thereby eliminating the need for space-consuming rigid sealing features.
2Reliability
If sealing ribs are configured on the battery box, then sealing is achieved, but device complexity increases
Solution Approach 1:
The sealing function is merged with the CCS assembly structure rather than being a separate feature of the battery box. The sealant component is integrated into the assembly process and structure, combining the sealing function with the existing CCS assembly and battery box interface, thereby reducing overall structural complexity.
Solution Approach 2:
The sealant component acts as a flexible sealing element that conforms to the assembly clearance between the CCS assembly and battery box. This flexible sealing approach replaces rigid sealing ribs, simplifying the structural design while maintaining effective sealing.
Data Source
Figure 1
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AI summary
Disclosed is a battery pack, including a cell contact system, CCS, assembly (1); a battery box (2), in which the CCS assembly (1) is mounted and fixed in the battery box (2); and a sealant component (3), in which the sealant component (3) is provided between the battery box (2) and the CCS assembly (1), and the sealant component (3) is extended along a peripheral direction of the CCS assembly (1) to seal an assembly clearance between the CCS assembly (1) and the battery box (2).