Battery Holder Alignment via Inclined Faces
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Solution Overview
Problem
In assembled batteries, dimensional variations of single battery cells lead to alignment issues during assembly, as existing technologies fail to absorb these variations, resulting in gaps or improper fitting, which complicates electrical connections and stability post-welding.
Innovation Solution
The use of battery holders with positioning means, featuring inclined faces that abut against corner portions of adjacent cells, allowing for automatic alignment and secure positioning of cells in both height and width directions, thereby absorbing dimensional tolerances and ensuring stable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dimension between the pair of side surface holding portions is greater than the battery can of the single battery cell, then a gap from the battery can is produced, but the single battery cell cannot be held and it becomes difficult to align the single battery cells during assembly
Solution Approach 1:
The battery holder incorporates an elastic member that provides dynamic adjustment capability, allowing the holding portions to adapt to dimensional variations in battery cans while maintaining secure holding and alignment during assembly
Solution Approach 2:
The elastic member changes its physical state (deformation) in response to dimensional variations, enabling the battery holder to accommodate different battery can dimensions while maintaining consistent holding force and alignment
2Ease of operation
If the dimension between the pair of side surface holding portions is narrower than the battery can, then the single battery cell cannot be fitted
Solution Approach 1:
The elastic member enables the battery holder to dynamically expand or contract to accommodate dimensional variations in battery cans, ensuring that cells can be properly fitted without requiring precise dimensional control
Solution Approach 2:
The elastic member undergoes deformation to adjust the effective dimension of the holding portions, allowing accommodation of battery cans with dimensional variations while maintaining proper fitting
3Manufacturing precision
If rigid holding portions are used to secure single battery cells, then alignment can be achieved, but the number of components and device complexity increases
Solution Approach 1:
The battery holder merges the functions of alignment, holding, and dimensional variation absorption into a single integrated component, eliminating the need for separate alignment fixtures or multiple holding components
Solution Approach 2:
The battery holder serves multiple functions simultaneously: it provides alignment through its geometric configuration, secures the battery cell through elastic pressure, and absorbs dimensional variations through the elastic member's deformation capability
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 solution enables automatic alignment and secure holding of single battery cells during assembly, preventing movement post-welding and ensuring reliable electrical connections without increasing the number of components, thus maintaining constant holding force and preventing damage to busbar welded portions.
Implementation Method 1
The positioning means includes inclined faces on opposing sides thereof seen in arrangement row direction abuting against respective corner portions of two adjacent battery cells
Implementation Method 2
the single battery cells and the battery holder being held in a state of being mutually pressed in an arranged direction
Data Source
AI summary
The purpose of the present invention is to provide an assembled battery including a battery holder capable of holding single battery cells while automatically aligning the cells during assembly. In the assembled battery (100) according to the present invention, a plurality of single battery cells (101) arranged in a row and battery holders (144) disposed between the plurality of single battery cells (101) are held in a state of being mutually pressed in an arranged direction. The battery holders (144) include a positioning means (144f, 144g) that positions the single battery cells (101) by biasing the single battery cells (101), while being pressed in the arranged direction, in a direction intersecting the arranged direction.