Battery Electrode Tab Holder With Spacer Against Vibration Damage
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Solution Overview
Problem
The electrode tab group in batteries is prone to damage due to external forces such as vibration and impact, which can lead to unstable electrical connections and potential connection failures.
Innovation Solution
A battery configuration that includes a spacer between the electrode body main part and the second side wall of the outer package, which regulates the movement of the electrode body and reduces the load on the electrode tab group, thereby minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the electrode body is allowed to move freely in the outer package, then the ease of assembly is improved, but the electrode tab group is damaged due to external forces such as vibration and impact
Solution Approach 1:
The spacer is pre-installed between the electrode body main part and the second side wall before the electrode body is subjected to external forces during operation. This preliminary positioning prevents the electrode body from moving excessively when vibration or impact occurs, thereby protecting the electrode tab group from damage while maintaining ease of assembly.
Solution Approach 2:
The spacer acts as an intermediary element between the electrode body main part and the outer package wall. It mediates the interaction by providing a controlled gap that allows the electrode body to be easily assembled while preventing excessive movement that would damage the electrode tabs, thus resolving the contradiction between assembly ease and connection reliability.
2Reliability
If the electrode body is constrained by the spacer, then the electrode tab group is protected from damage, but the device complexity increases
Solution Approach 1:
The spacer divides the internal space of the outer package into distinct regions, creating a controlled environment for the electrode body. This segmentation allows the electrode body to be protected from excessive movement without requiring a completely different structural design, thus minimizing the increase in device complexity while maintaining reliability.
Solution Approach 2:
The spacer is designed as a thin, simple component that provides effective constraint without adding significant structural complexity. Its simple geometry and material properties allow it to fulfill the protective function while keeping the overall device structure relatively simple, resolving the contradiction between reliability improvement and device complexity.
3Reliability
If the electrode body is constrained by the spacer, then the movement is regulated and tab damage is prevented, but the space utilization in the outer package is reduced
Solution Approach 1:
The spacer provides just enough constraint to prevent electrode tab damage from excessive movement, without over-constraining the electrode body. This partial action approach ensures that the electrode body has sufficient freedom of movement for normal operation while being protected from damage, thus minimizing the impact on space utilization while maintaining reliability.
Solution Approach 2:
The spacer is positioned to provide protection only where needed - between the electrode body main part and the second side wall. This targeted placement prevents unnecessary space consumption while still achieving the goal of protecting the electrode tabs, resolving the contradiction between reliability and space utilization.
Data Source
AI summary
A battery is provided in which an electrode tab group is hardly damaged. In the herein disclosed battery, an electrode body includes an electrode body main body part, a positive electrode tab group protruding from a first end part, and a negative electrode tab group protruding from a second end part. The positive electrode tab group and the negative electrode tab group are folded and bent to make tip ends of electrode tabs respectively configuring these tab groups be arranged along a second side wall of the battery case. A portion of the folded and bent electrode tab is joined to the electrical collector body of the same pole. The battery includes a spacer between the electrode body main body part and the second side wall, and the spacer is to regulate movement of the electrode body.