Electrical Storage Module Sealing Member Adhesive Management
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Solution Overview
Problem
In existing electrical storage modules, managing the application state of adhesive between the outer circumferential surface of batteries and the inner circumferential surface of the holder is difficult due to the adhesive passing through the posture restricting portions, leading to challenges in maintaining the adhesive's position and preventing leakage.
Innovation Solution
An electrical storage module design that incorporates a sealing member between the inner and outer circumferential surfaces of the holder and the battery, which houses a resin member, allowing for easier management of the adhesive application state and preventing leakage by pressing the outer circumferential surface of the battery, thus eliminating the need for displacement-restricting members and enhancing energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is applied between the outer circumferential surface of the battery and the inner circumferential surface of the holder without a sealing member, then the adhesive can bond the battery to the holder, but the adhesive passes through the posture restricting portions making it difficult to manage the application state
Solution Approach 1:
A sealing member is introduced as an intermediary component between the battery and the holder. This sealing member defines a sealed space that contains the adhesive, preventing it from passing through the posture restricting portions. The sealing member thus mediates between the adhesive application needs and the position control requirements, allowing easy management of adhesive application while maintaining reliable position control.
2Reliability
If displacement-restricting members are used to prevent adhesive leakage, then adhesive position is controlled, but the module weight and volume increase
Solution Approach 1:
The sealing member serves multiple functions simultaneously: it seals the adhesive to prevent leakage, it acts as a posture restricting portion to control battery position, and it bonds the battery to the holder. By combining these functions into a single component, the need for separate displacement-restricting members is eliminated, reducing module weight while maintaining adhesive position control.
3Reliability
If displacement-restricting members are used to prevent adhesive leakage, then adhesive position is controlled, but the module volume increases
Solution Approach 1:
The sealing member integrates multiple functions including adhesive sealing, position restriction, and structural support. This multi-functionality eliminates the need for additional displacement-restricting members, thereby reducing module volume while maintaining effective adhesive position control.
4Reliability
If a sealing member is introduced to manage adhesive application, then adhesive position control improves, but the device complexity increases
Solution Approach 1:
The sealing member is merged with the holder structure, forming an integrated component. The sealing member can be molded as part of the holder or closely integrated with it, combining the sealing function with the holder's structural and positioning functions. This merging approach improves adhesive position control while minimizing the increase in device complexity.
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
The sealing member effectively suppresses the expansion of the resin member, allowing for precise management of the adhesive application state, reducing the module's weight and volume, and improving the energy density by eliminating the need for displacement-restricting members and enhancing the structural strength of the module.
Implementation Method 1
The inner circumferential surface includes a sealing member pressing the outer circumferential surface
Data Source
AI summary
An electrical storage module includes electrical storage devices and a holder including housing parts housing the electrical storage devices therein. Each electrical storage device has an outer circumferential surface, a first end surface provided at a first end of the outer circumferential surface, and a second end surface which is provided at a second end of the outer circumferential surface and is opposite to the first end in a first direction. An inner circumferential surface of the housing part faces the outer circumferential surface of the electrical storage device. The inner circumferential surface includes a sealing member pressing the outer circumferential surface. A resin member is housed in a space demarcated by the inner circumferential surface of the housing part, the outer circumferential surface of the electrical storage device, and the sealing member.