Power Storage Module Holder Structure for Impact Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power storage modules with cylindrical power storage devices sealed in a film outer covering body are prone to deformation under impact due to the high flexibility of the film, necessitating an enhancement in holding strength without increasing weight.
Innovation Solution
A power storage module configuration that includes multiple holders and a reinforcement member, with the holders featuring side plates and protrusions to securely fit and stabilize the film-covered power storage devices, and the reinforcement member providing additional rigidity through slidable connections and grooves to enhance holding strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a film outer covering body is used to seal multiple electrode assemblies, then weight is reduced, but holding strength is insufficient and deformation occurs under impact
Solution Approach 1:
The invention uses a composite structure combining a flexible film outer covering body with a rigid holder made of resin or metal. The film provides lightweight containment while the holder provides structural strength and impact resistance, resolving the contradiction between weight reduction and holding strength enhancement.
Solution Approach 2:
The film outer covering body is designed with high flexibility to conform to electrode assemblies and provide lightweight sealing. However, its flexibility alone is insufficient for impact resistance, which is why it is combined with a rigid holder structure that provides the necessary mechanical strength without significantly increasing weight.
2Weight of moving object
If a film outer covering body is used to seal multiple electrode assemblies, then weight is reduced, but the device becomes prone to deformation under impact
Solution Approach 1:
The composite structure of flexible film and rigid holder creates a system where the film provides lightweight conformal sealing while the holder provides rigid structural support. This combination maintains the weight advantage of film packaging while adding the deformation resistance of rigid structures.
Solution Approach 2:
The holder is divided into multiple functional components including side plates with recesses for individual electrode assembly containment, end plates for axial support, and reinforcement members for enhanced rigidity. This segmentation allows each component to address specific stability requirements while maintaining overall lightweight design.
3Strength
If holders with recesses are used to fit containers, then holding strength is enhanced, but device complexity increases
Solution Approach 1:
The holder structure performs multiple functions: side plates with recesses provide lateral containment and positioning, end plates provide axial support and sealing, and reinforcement members provide structural rigidity. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving enhanced holding strength.
Solution Approach 2:
The holder provides enhanced structural features (recesses, reinforcement members) only at locations where they are most needed for holding strength, rather than uniformly throughout the entire structure. This localized approach enhances holding strength while minimizing the increase in overall device complexity.
Data Source
AI summary
A power storage module includes a first power storage device, a second power storage device, a first holder, a second holder, and a reinforcement member. The first power storage device and the second power storage device are arranged in an orthogonal direction. The first holder includes a first side plate. The second holder includes a second side plate. The reinforcement member includes a first reinforcement part, a second reinforcement part, and a first connection part. The first reinforcement part includes a side plate groove into which the first side plate is fitted. The second reinforcement part includes a side plate groove into which the second side plate is fitted. The first connection part connects the first reinforcement part and the second reinforcement part, and is at least temporarily slidable with respect to at least one of the first reinforcement part and the second reinforcement part.