Split Battery Holder with Integrated Cell Heat Insulation
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Solution Overview
Problem
Existing battery packs require additional steps and increased manufacturing costs due to the need for separate heat insulation plates between secondary battery cells, which are not efficiently integrated into the battery holder.
Innovation Solution
A battery pack design where the battery holder is divided into two parts, allowing an insertion piece to be interposed between adjacent secondary battery cells upon joining the holder parts, thereby enhancing heat insulation without the need for additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plate material having flame retardancy is inserted between adjacent secondary battery cells, then heat insulating properties between battery cells are improved, but manufacturing cost increases due to additional components and assembly steps
Solution Approach 1:
The heat insulation function is merged with the battery holder structure itself. The partition walls that separate battery cell housing spaces are designed to directly provide heat insulation between adjacent cells, eliminating the need for separate plate materials. This integration maintains reliable heat insulation while simplifying the overall structure and reducing manufacturing complexity.
Solution Approach 2:
The partition walls of the battery holder serve multiple functions: they provide structural support for housing battery cells, define cell boundaries, and simultaneously provide heat insulation between adjacent cells. This multi-functionality eliminates the need for dedicated heat insulation components, resolving the contradiction between reliability and device complexity.
2Reliability
If a plate material having flame retardancy is inserted between adjacent secondary battery cells, then heat insulating properties between battery cells are improved, but manufacturing process complexity increases due to additional assembly steps
Solution Approach 1:
The heat insulation function is merged with the battery holder structure itself. The partition walls that separate battery cell housing spaces are designed to directly provide heat insulation between adjacent cells, eliminating the need for separate plate materials. This integration maintains reliable heat insulation while simplifying the overall structure and reducing manufacturing complexity.
Solution Approach 2:
The partition walls of the battery holder serve multiple functions: they provide structural support for housing battery cells, define cell boundaries, and simultaneously provide heat insulation between adjacent cells. This multi-functionality eliminates the need for dedicated heat insulation components, resolving the contradiction between reliability and device complexity.
3Ease of operation
If the battery holder is divided into multiple parts to facilitate assembly, then ease of assembly is improved, but device complexity increases
Solution Approach 1:
The battery holder is divided into a first holder and a second holder that can be assembled together. The first holder includes holding curved surfaces for individual battery cells and defines insertion gaps, while the second holder includes insertion pieces that fit into these gaps. This segmentation facilitates assembly by allowing modular construction while the integrated design of insertion pieces maintains structural simplicity.
Solution Approach 2:
The insertion pieces of the second holder are designed to be inserted into the insertion gaps defined by the first holder, creating a nested assembly structure. This nesting approach enables easy assembly through simple insertion movements while maintaining a compact and simple overall structure, resolving the contradiction between ease of assembly and device complexity.
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 design improves heat insulating properties between secondary battery cells with a simpler structure, reducing manufacturing complexity and costs by eliminating the need for separate heat insulation plates.
Implementation Method 1
The battery pack according to an aspect of the present disclosure enables the insertion piece to be interposed between the secondary battery cells adjacent to each other only by joining the first holder and the second holder. In particular, not only the two holding curved surfaces but also the insertion piece is interposed between the secondary battery cells adjacent to each other, and thus enabling improvement in heat insulating properties between the secondary battery cells with a simple structure.
Data Source
AI summary
A battery pack includes a battery holder that holds a plurality of secondary battery cells. The battery holder is configured to hold each of the plurality of secondary battery cells in a cell housing space formed by joining the first holder and the second holder. The first holder includes a plurality of holding curved surfaces, and a first end surface plate to which end edges of the plurality of holding curved surfaces are fixed. The first holder defines insertion gaps between adjacent holding curved surfaces of the plurality of holding curved surfaces. The second holder includes a plurality of insertion pieces that is inserted into a respective one of the insertion gaps in a state of being joined to the first holder, and a second end surface plate to which end edges of the plurality of insertion pieces are fixed.