Electric Storage Element Spacer Integration
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Solution Overview
Problem
Conventional electric storage elements require complex manufacturing steps and risk spacer shifting during assembly, due to the need to insert spacers between the electrode body and case, which complicates the process and can lead to vibration issues.
Innovation Solution
The spacer is arranged between the insulating member and the electrode body, allowing it to be fixed and inserted together, preventing shifting and simplifying the assembly process while reducing the space between the electrode body and case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If a spacer is provided between the electrode body and the case to reduce space, then the space between electrode body and case is reduced, but the manufacturing process becomes more complex and the spacer may shift position
Solution Approach 1:
The insulating member and spacer are integrated into a single unified structure. The insulating member has a first portion that contacts the case and a second portion that contacts the electrode body, eliminating the need for separate spacer insertion while maintaining both insulation and space-reduction functions.
Solution Approach 2:
The insulating member performs multiple functions simultaneously: it provides electrical insulation between the electrode body and case, acts as a spacer to reduce the space between them, and prevents positional shifting during manufacturing and operation. This multi-functional design eliminates the need for dedicated spacer components.
2Volume of stationary object
If a spacer is inserted into the case separately to reduce space, then the space between electrode body and case is reduced, but the insertion process becomes more complex and time-consuming
Solution Approach 1:
The insulating member and spacer functions are merged into one component that is inserted as a single unit. This integration eliminates multiple insertion steps, reduces assembly time, and improves manufacturing productivity while achieving the same space-reduction effect.
Solution Approach 2:
The insulating member is pre-formed with the appropriate thickness and shape to serve as both insulation and spacer. This preliminary preparation allows for single-step insertion that simultaneously achieves insulation, space reduction, and positional stability, improving manufacturing efficiency.
3Reliability
If a spacer is inserted separately to prevent vibration, then vibration resistance is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The insulating member is designed with sufficient thickness and structural rigidity to simultaneously provide electrical insulation, maintain spacing, and prevent vibration-induced shifting. This unified structure eliminates separate spacer components while achieving all three functions, including vibration resistance.
Solution Approach 2:
The insulating member is made from materials that combine electrical insulation properties with mechanical strength and vibration resistance. This composite material approach allows a single component to fulfill multiple roles including vibration damping and positional stability without requiring additional spacer elements.
Data Source
AI summary
An electric storage element includes an electrode body including a positive electrode and a negative electrode, the electrode body including a coated region, which includes active materials applied to surfaces of the positive electrode and the negative electrode, and a non-coated region not including the active material on the surface of the positive electrode or the negative electrode, a case including a case body for housing the electrode body and a lid plate that covers an opening of the case body, the case body including a bottom wall having a long side and a short side, the case body further including a side wall standing on the short side of the bottom wall, the lid plate being formed with an electrode terminal, and an insulating member arranged in the case to insulate the electrode body from the case.