End Cover Terminal Sealing Structure for Riveting Stability
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Solution Overview
Problem
Existing energy storage apparatuses face issues with sealing performance between the terminal post and the top cover due to loosening of the sealing member during riveting, leading to reduced production yield.
Innovation Solution
An end cover assembly is designed with a conductive block featuring a protruding ring that abuts against the upper plastic member, a terminal post with a flange portion, and a sealing member clamped between the post and the mounting hole, enhancing the sealing mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member, upper plastic member, and lower plastic member are arranged between terminal post and top cover to achieve sealing, then sealing function is provided, but the sealing member easily loosens during riveting due to large external forces, reducing sealing performance
Solution Approach 1:
The conductive block serves as an intermediary component between the terminal post and upper plastic member. The protruding ring on the conductive block acts as a mediator that transmits and distributes the riveting forces, preventing direct transmission of large external forces to the sealing member, thereby maintaining sealing performance while enabling reliable connection
Solution Approach 2:
The connection structure is segmented into multiple functional components: the terminal post, conductive block with protruding ring, upper plastic member, and sealing member. This segmentation allows each component to perform its specific function - the protruding ring handles force distribution, the sealing member provides sealing, and the upper plastic member provides structural support, preventing force concentration on the sealing member
2Strength
If the terminal post and conductive block are subjected to large external forces during riveting, then secure connection is achieved, but the sealing member loosens, reducing production yield
Solution Approach 1:
The protruding ring on the conductive block provides beforehand cushioning by being positioned to abut against the upper plastic member before riveting completes. This pre-positioned structural element cushions and distributes the upcoming riveting forces, preventing excessive force transmission to the sealing member, thus maintaining both connection strength and sealing integrity to improve production yield
Data Source
AI summary
An end cover assembly, an energy storage apparatus, and an electricity-consumption device are provided in the disclosure to improve a production yield. The end cover assembly includes a top cover, an upper plastic member, a conductive block, a terminal post, and a sealing member. A mounting hole of the top cover extends through the top cover in a thickness direction of the top cover. The upper plastic member is mounted to the top cover. A through hole of the upper plastic member extends through the upper plastic member in the thickness direction of the upper plastic member and is in communication with the mounting hole. The conductive block is mounted to the upper plastic member. A fitting hole of the conductive block extends through the conductive block in a thickness direction of the conductive block and is in communication with the through hole.