Battery Case-Terminal Structure With Insulating Gasket Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing secondary batteries have complex external terminal structures that increase the number of parts and production costs.
Innovation Solution
The secondary battery design eliminates or reduces external terminals by using an insulating gasket between two cases, each connected to different electrode plates, preventing electrical connection and allowing direct connection to external terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional external terminal structures are used, then electrical connection is ensured, but the number of parts and production costs increase
Solution Approach 1:
The patent merges the case structure with the terminal function by making the first and second cases themselves electrically connected to the electrode plates, eliminating the need for separate external terminals. The cases serve dual purposes: structural containment and electrical connection, thereby reducing part count and production cost while maintaining electrical functionality
Solution Approach 2:
The cases are designed to perform multiple functions: they provide structural protection for the electrode assembly, serve as electrical terminals through their connection to the electrodes via connection tabs, and maintain mechanical stability. This multi-functionality eliminates dedicated terminal components and simplifies the overall battery structure
2Adaptability or versatility
If cases are directly connected to electrode plates, then terminal function is achieved, but electrical short circuit risk increases
Solution Approach 1:
An insulating gasket is introduced as an intermediary component between the first case and the second case. This gasket prevents direct electrical contact between the two cases while allowing them to maintain mechanical proximity and structural integrity, thereby eliminating short circuit risk while preserving the terminal function of the cases
Solution Approach 2:
The electrical isolation is achieved by segmenting the conductive path between the two cases using the insulating gasket. The gasket creates distinct electrical zones, ensuring that the positive and negative terminals (cases) remain electrically isolated while maintaining their structural and functional roles
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 design reduces the number of parts and production costs while ensuring electrical safety and freedom of design by blocking electrical connections between the cases, thus simplifying the battery structure.
Implementation Method 1
an insulating gasket located between the first case and the second case, the insulating gasket comprising an insulative material, wherein electrical connection between the first case and the second case is blocked
Data Source
AI summary
Disclosed is a secondary battery capable of reducing and/or eliminating an external terminal structure, thereby reducing the number of parts and production costs thereof. The secondary battery includes an electrode assembly including a first electrode plate and a second electrode plate, a first case mounted in a shape surrounding at least one surface of the electrode assembly and electrically connected to the first electrode plate, a second case mounted in a shape surrounding at least the opposite surface of the electrode assembly and electrically connected to the second electrode plate, and an insulating gasket located between the first case and the second case and made of an insulative material to block electrical connection between the first case and the second case.