Electrochemical Cell Terminal Layout to Protect Fragile Metal Tabs
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Solution Overview
Problem
The metal sheet in electrochemical devices is prone to damage due to its relatively low strength, especially when the devices are frequently mounted into or removed from electronic devices.
Innovation Solution
The electrochemical device uses a first conductive terminal instead of the metal sheet for current leading-in or leading-out, with the metal sheet's second portion connected to the conductive terminal outside the housing, reducing interference from internal components and enhancing structural protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the metal sheet is used for current leading-in or leading-out, then the electrochemical device can be connected to external power utilization load, but the metal sheet is prone to damage or breakage due to its relatively low strength
Solution Approach 1:
The patent introduces a conductive terminal as an intermediary component between the metal sheet and the external power utilization load. The conductive terminal has higher strength than the metal sheet and is used for external connections, while the metal sheet remains inside the housing to maintain electrical connection with the electrode assembly. This mediator approach allows the system to achieve both good connection capability and structural strength.
2Ease of operation
If the metal sheet extends outside the housing for connection, then current leading-in or leading-out can be achieved, but the metal sheet is exposed to external environment and prone to damage
Solution Approach 1:
The conductive terminal serves as a mediator that extends outside the housing for external connections while the metal sheet remains protected inside the housing. The conductive terminal transfers electrical current between the internal metal sheet and external power utilization load, eliminating the need for the metal sheet to be exposed to the external environment.
Solution Approach 2:
The electrical connection system is segmented into two parts: the metal sheet inside the housing that maintains electrical connection with the electrode assembly, and the conductive terminal outside the housing that provides external connection interface. This segmentation allows each component to be optimized for its specific function and protection requirements.
3Adaptability or versatility
If the metal sheet is used for multiple mounting and removal operations, then the electrochemical device can be frequently installed and removed, but the metal sheet is prone to damage due to repeated mechanical stress
Solution Approach 1:
The conductive terminal acts as a mediator that handles all external mechanical stress from mounting and removal operations. The metal sheet inside the housing remains stationary and only performs its electrical connection function, while the conductive terminal absorbs the mechanical stress of frequent installation and removal, protecting the metal sheet from damage.
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 solution alleviates the risk of metal sheet damage, simplifies the connection process, and improves the reliability and durability of the electrochemical device by using a conductive terminal for external connections.
Implementation Method 1
the first conductive terminal is electrically connected to a portion of the second portion extending outside the first housing, and the electrochemical device achieves current leading-in or leading-out through the first conductive terminal
Data Source
AI summary
An electrochemical device includes a housing, an electrode assembly, a first metal sheet, and a first conductive terminal. The housing includes a first housing, and the first housing forms a first accommodation cavity. The electrode assembly is accommodated in the first accommodation cavity. The first metal sheet includes a first portion and a second portion, the first portion is accommodated in the first accommodation cavity and electrically connected to the electrode assembly, and the second portion extends outside the first housing. The first conductive terminal is provided on the housing and exposed relative to an outer surface of the housing, the first conductive terminal is electrically connected to a portion of the second portion extending outside the first housing, and the electrochemical device achieves current leading-in or leading-out through the first conductive terminal.