Cylindrical Battery Pole Sealing Structure to Prevent Rotation
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Solution Overview
Problem
Cylindrical full-tab batteries face issues with the positive pole's restricted movement due to its riveted connection, allowing for rotation which can lead to instability and potential short circuits.
Innovation Solution
A cylindrical battery design incorporating an insulation sealing member with annular protrusion blocks that fit closely against the positive pole's sidewall, preventing rotation by increasing friction and ensuring secure engagement between the positive pole and the case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the positive pole is riveted to the case, then the horizontal and vertical movements are restricted, but the positive pole can still rotate due to its columnar structure
Solution Approach 1:
An insulation sealing member is introduced as an intermediary component between the positive pole and the case. This mediator not only provides electrical insulation to prevent short circuits but also includes annular protrusion blocks that mechanically engage with the positive pole to prevent rotation, thus solving both the insulation and stability issues simultaneously.
Solution Approach 2:
The insulation sealing member is made of composite material structure combining insulating properties and mechanical engagement features. The composite design integrates both the insulation function and the rotational prevention function through the annular protrusion blocks, addressing multiple problems with a single composite solution.
2Reliability
If an insulation sealing member with annular protrusion blocks is added, then rotation is prevented, but device complexity increases
Solution Approach 1:
The insulation sealing member merges multiple functions into a single component: electrical insulation, mechanical sealing, and rotational prevention. By combining these functions in one component rather than using separate parts, the solution reduces overall device complexity while achieving multiple objectives simultaneously.
Solution Approach 2:
The insulation sealing member is designed as a multi-functional component that performs insulation, sealing, and rotational constraint functions. This universal component approach reduces the total number of parts needed in the battery assembly, thereby reducing device complexity while improving reliability.
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 solution effectively prevents the positive pole from rotating, enhancing the stability and preventing short circuits, thereby improving the overall performance and reliability of the cylindrical battery.
Implementation Method 1
the outer sidewall of the portion, passing through the case, of the positive pole presses the annular protrusion block towards an inner sidewall of a portion, being passed through, of the case
Data Source
AI summary
Provided is a cylindrical battery which includes a case, a positive pole and an insulation sealing member. The case is a cylindrical groove structure. The positive pole is riveted to the case, and the insulation sealing member is arranged between the positive pole and the case. The insulation sealing member comprises an upper insulation sealing member and a lower insulation sealing member, the upper insulation sealing member is arranged outside the case and is engaged with and connected to the case, and the lower insulation sealing member is arranged inside the case. At least one of the upper insulation sealing member and the lower insulation sealing member is provided with an annular protrusion block, the annular protrusion block fits closely against an outer sidewall of a portion, passing through the case, of the positive pole.