Battery Cell End Cover Buffering for Vibration-Resistant Connections
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Solution Overview
Problem
Battery cells experience connection failure and fatigue fracture of connection adapter members due to vibration during vehicle operation, leading to reduced service life.
Innovation Solution
Incorporating a buffer member on the insulating member facing the electrode assembly to relieve impact forces on the connection adapter member, preventing fatigue fracture and maintaining electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connection adapter member is directly connected to the electrode assembly without a buffer member, then the device complexity is reduced, but the reliability deteriorates due to connection failure and fatigue fracture under vibration
Solution Approach 1:
A buffer member is introduced as an intermediary component between the connection adapter member and the electrode assembly. This buffer member absorbs vibration and impact forces, preventing direct transmission to the connection adapter member, thereby reducing fatigue fracture and connection failure while maintaining structural simplicity
2Duration of action of stationary object
If the battery cell is designed without vibration buffering, then the manufacturing precision and assembly ease are improved, but the service life deteriorates due to fatigue fracture under vibration
Solution Approach 1:
The buffer member is pre-installed in the end cover assembly before final assembly with the electrode assembly. This beforehand cushioning approach protects the connection adapter member from vibration and impact during operation, extending service life while maintaining ease of manufacture through a straightforward assembly process
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 buffer member effectively reduces the likelihood of connection failure and fatigue fracture, thereby enhancing the service life of the battery cell.
Implementation Method 1
a buffer member pressed against the connection adapter member is provided on one side of the insulating member facing the electrode assembly, wherein the buffer member is pressed against the connection adapter member for buffering connection adapter member when the battery cell vibrates
Data Source
AI summary
A battery cell, a battery, an electrical apparatus, and a method and a system for manufacturing a battery cell are provided. The battery cell comprises: a case having an opening; an electrode assembly provided within the case; an end cover assembly for closing the opening, wherein the end cover assembly comprises an end cover, an insulating member and a connection adapter member, the end cover is provided with an electrode terminal, and is configured to cover the opening and is connected to the case, the insulating member is provided on one side of the end cover facing the electrode assembly, and the connection adapter member is used for being electrically connected to the electrode terminal and to the electrode assembly; and a buffer member provided on one side of the insulating member facing the electrode assembly.