Secondary Battery Tab Layout With Integrated Multi-Tab Terminals
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Solution Overview
Problem
Existing secondary batteries face challenges in increasing the number of electrode components without an increase in the number of parts, which limits capacity.
Innovation Solution
A secondary battery design with a housing, lid, and two battery terminals, where electrode components are arranged in a thickness direction with tab groups protruding orthogonally, and electrode joint sections are bonded to these tab groups using a single member, allowing multiple electrode components without additional parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of electrode components is increased to achieve larger capacity, then the battery capacity is improved, but the number of parts in the battery terminal increases
Solution Approach 1:
Multiple second current collecting sections that would traditionally be separate parts are merged into a single integrated battery terminal structure. The terminal includes a first current collecting section and multiple second current collecting sections formed as one piece, allowing multiple electrode components to connect to a unified terminal rather than requiring separate terminals for each electrode component.
Solution Approach 2:
The battery terminal is designed with multi-functionality to serve multiple electrode components simultaneously. The single terminal structure provides multiple connection points and current collecting sections that can interface with multiple electrode components, making the terminal a universal component that handles both current collection and mechanical support functions for all electrode components in the battery.
2Quantity of substance
If more electrode components are included to increase capacity, then the energy storage is improved, but the assembly complexity increases
Solution Approach 1:
The battery terminal integrates multiple functional sections into a single component that simplifies assembly. The first current collecting section and multiple second current collecting sections are formed as one integrated structure, allowing electrode components to be assembled onto a unified terminal rather than requiring complex assembly of multiple separate terminal parts.
Solution Approach 2:
While maintaining a single integrated terminal structure, the design segments the current collecting functionality into distinct sections within the terminal. The terminal includes a first current collecting section and multiple second current collecting sections that are spatially separated and independently positioned to interface with different electrode components, enabling modular assembly of multiple electrode components without increasing the number of terminal parts.
Data Source
AI summary
A secondary battery includes electrode components and battery terminals, wherein the electrode components each include tab groups protruding from opposite ends, as viewed in a first direction, the tab group of each electrode component which is on a first side in the first direction differs in position in a second direction orthogonal to the thickness direction of the electrode components from the tab group of any other electrode component which is on the first side in the first direction, as viewed in a first direction, the tab group of each electrode component which is on a second side in the first direction differs in position in the second direction from the tab group of any other electrode component which is on the second side in the first direction, the battery terminals each include a member including electrode joint sections each bonded to a tab group positioned to be bondable thereto.