Current Interruption Device with Restricted Deforming Members
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current interruption devices in electricity storage systems face instability due to displacement of deforming members from their designed positions, leading to unreliable operation when pressure exceeds predetermined values.
Innovation Solution
The implementation of a current interruption device with restricted movement structures for deforming members, comprising a first conducting member, a second conducting member, a first deforming member, and a second deforming member, where the deforming members are designed to maintain contact or separation based on internal pressure, using projections and recesses to prevent positional displacement and ensure stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deforming members are allowed to move freely to respond to pressure changes, then the current interruption device can operate based on pressure variations, but positional displacement occurs leading to unstable operation
Solution Approach 1:
The device is divided into multiple deforming members (first deforming member and second deforming member) that independently respond to pressure changes. Each deforming member is segmented to have specific contact portions that interact with conducting members, allowing controlled movement while maintaining overall system stability through distributed functional elements.
Solution Approach 2:
Insulating members are introduced as intermediary elements between the deforming members and conducting members. These insulating members mediate the interaction by providing electrical insulation while allowing mechanical contact and movement, enabling the deforming members to respond to pressure changes without direct electrical contact that would cause instability.
2Stability of the object's composition
If deforming members are fixed rigidly to prevent displacement, then positional stability is improved, but the device cannot respond to pressure changes
Solution Approach 1:
The deforming members are designed with dynamic characteristics, allowing them to deform and change position in response to pressure variations. The members are not rigidly fixed but are constrained within defined movement boundaries, enabling controlled dynamic response to pressure changes while maintaining overall positional stability through the restricting structures.
Solution Approach 2:
The deforming members are constructed as flexible components that can deform under pressure. These thin-walled or flexible structures allow controlled movement and deformation to respond to pressure changes while the restricting structures (projections and recesses) provide boundaries to prevent excessive displacement, combining flexibility with stability.
3Stability of the object's composition
If restricting structures are added to prevent displacement, then positional stability is improved, but device complexity increases
Solution Approach 1:
The restricting structures (projections and recesses) are merged with the existing deforming members and conducting members rather than being separate components. The projections are formed on the deforming members themselves, and the recesses are integrated into the conducting members, combining the restricting function with the structural elements to minimize additional complexity.
Solution Approach 2:
The deforming members serve multiple functions: they respond to pressure changes, maintain electrical contact or separation, and incorporate restricting structures to prevent displacement. The conducting members also serve dual purposes as both electrical conductors and as structures containing recesses for positioning. This multi-functionality reduces the need for separate components, limiting 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
This configuration stabilizes the operation of the current interruption device by preventing positional displacement of deforming members, ensuring reliable interruption of electrical conduction when internal pressure exceeds predetermined values, thereby enhancing the reliability of the current interruption process.
Implementation Method 1
The first deforming member is disposed between the first conducting member and the second conducting member. The first deforming member is configured to make contact with the second conducting member when the pressure in the casing is equal to or less than a predetermined value, and is configured not to make contact with the second conducting member when the pressure in the casing exceeds the predetermined value.
Implementation Method 2
a current interruption device which interrupts electrical conduction between an electrode terminal and an electrode in a case where pressure in a casing of an electricity storage device exceeds a predetermined value
Implementation Method 3
The second deforming member comprises a projection which projects toward a center portion of the second conducting member. The center portion projects in a direction away from the second conducting member when the pressure in the casing is equal to or less than a predetermined value, and the center portion moves toward the second conducting member so that the projection makes contact with the second conducting member when the pressure in the casing exceeds the predetermined value.
Data Source
AI summary
A current interruption device is provided with a first conducting member that is fixed to a casing, a second conducting member that is disposed at a position opposed to the first conducting member, a first deforming member, and a second deforming member. The first deforming member makes contact with the second conducting member when pressure in the casing is equal to or less than a predetermined value, and is configured not to make contact with the second conducting member when the pressure in the casing exceeds the predetermined value. The second deforming member is provided with a projection in a shape projecting toward a center portion of the second conducting member. A restricting structure that restricts a movement of the first deforming member is provided on the first conducting member. A restricting structure that restricts a movement of the second deforming member is provided on the second conducting member.