Battery Cell Assembly Insertion Structure for Connection Protection
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Solution Overview
Problem
The challenge lies in introducing a cell connected body, which includes power storage cells with high rigidity and connection portions with low rigidity, into a casing without causing damage to the connection portions due to stress during introduction.
Innovation Solution
The solution involves using a base member on which the cell connected bodies are carried, allowing them to be slid into a casing with a longitudinal direction aligned with the connection direction of the cell connected bodies, thereby facilitating easy introduction while minimizing stress on the connection portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cell connected body is introduced directly into the casing without a base member, then the structure is simpler, but the connection portion may be damaged due to stress during introduction
Solution Approach 1:
A base member is introduced as an intermediary component between the cell connected body and the casing. The base member has a larger contact area than the cell connected body, allowing it to bear and distribute the stress during introduction, thereby protecting the connection portion from damage while facilitating the insertion process
2Reliability
If the base member has a large contact area to reduce stress, then the connection portion is protected, but the base member dimension increases
Solution Approach 1:
The base member is designed with different local properties: a larger overall contact area with the casing to distribute stress, but a smaller localized area where the cell connected body is carried. This allows the base member to protect the connection portion while minimizing the increase in overall dimensions
Data Source
AI summary
A power storage device configured to store electric power includes a casing, one or more cell connected bodies, and a base member on which the one or more cell connected bodies are carried. Each of the one or more cell connected bodies includes a plurality of power storage cells and a connection portion that electrically connects the power storage cells to each other. The one or more cell connected bodies and the base member are accommodated in the casing.