Power Storage Cell Sealing Shield for Vibration-Stable Plate Alignment
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Solution Overview
Problem
Existing power storage modules face issues with components coming into contact with the sealing member due to vibrations and positional deviation of conductive plates during lamination.
Innovation Solution
A power storage device design that includes a protective member with a covering portion to protect the sealing member, and linking portions to connect conductive plates, preventing positional deviation and ensuring effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing member is exposed to seal the liquid injection port, then sealing function is achieved, but the sealing member is vulnerable to contact with external components due to vibrations
Solution Approach 1:
The protective member acts as an intermediary between the sealing member and external components. It is positioned between them to prevent direct contact, thereby protecting the sealing member from vibrations and external forces while maintaining the sealing function.
Solution Approach 2:
The protective member provides beforehand cushioning by being pre-installed in position to absorb and distribute external forces before they can reach the sealing member. This prevents vibrations and external impacts from directly affecting the sealing member.
2Reliability
If conductive plates are laminated on both faces of the power storage module, then electrical connection is improved, but positional deviation among conductive plates occurs
Solution Approach 1:
The protective member integrates multiple functions: it protects the sealing member, maintains positional alignment of conductive plates, and provides structural support. By combining these functions into a single component, the system achieves better positional precision without compromising electrical connection.
Solution Approach 2:
The protective member's rigid structure and precise geometry change the positional parameters of the assembly, maintaining fixed distances and alignments between conductive plates. This ensures consistent electrical connection while preventing positional deviation during assembly and operation.
3Ease of operation
If the sealing portion protrudes from the holding portion, then sealing access is facilitated, but the sealing portion becomes more exposed to external loads
Solution Approach 1:
The protective member serves as an intermediary that allows the sealing portion to protrude for access while simultaneously shielding it from external loads. It creates a protective environment around the protruding sealing portion without hindering its accessibility.
Data Source
AI summary
The power storage device includes an electrode body, a holding portion for holding an edge portion of the electrode body, a sealing portion for sealing the liquid injection port formed in the holding portion, a protective member for protecting the sealing portion, and a pair of conductive plates arranged so as to be in contact with the electrode body from both sides of the electrode body in the laminating direction. The sealing portion protrudes from the holding portion in a direction orthogonal to the stacking direction. The protective member includes: a covering portion covering the sealing portion; a first connecting portion connecting the conductive plate disposed on one side of the covering portion in the laminating direction and the covering portion; and a second connecting portion connecting the conductive plate disposed on the other side of the covering portion in the laminating direction and the covering portion.