Battery Module Insulating Joint Member for Stable Terminal Connections
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Solution Overview
Problem
Middle- or large-sized battery modules face challenges in maintaining stable electrical and mechanical connections between battery cells due to external forces, leading to potential short circuits, and existing solutions increase module size and complexity without ensuring structural stability.
Innovation Solution
A battery module structure featuring plate-shaped electrode terminal connecting members with coupling structures and an insulating joint member supported by the module case, which prevents dislocation of electrode terminals and ensures stable connections through slits and welding, allowing for series and parallel connections while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insulating member is used to mount the electrode terminal connecting member to battery cells, then stable mounting is achieved, but the overall size of the battery module increases and the structure becomes complicated
Solution Approach 1:
The insulating joint member integrates both the electrical connection function (through conductive portions that connect electrode terminals) and the mechanical support function (through insulating portions that provide structural stability and mounting). This merging eliminates the need for separate insulating members and coupling structures, thereby reducing overall module size and structural complexity while maintaining stable mounting and preventing short circuits.
2Power
If multiple battery cells are arranged laterally to achieve high power and large capacity, then electrical connection stability is compromised under external forces, but increasing structural support increases module size
Solution Approach 1:
The insulating joint member is constructed as a composite structure with both conductive portions (for electrical connection) and insulating portions (for mechanical support and electrical isolation). This composite design enables the single component to simultaneously provide stable electrical connection, mechanical support, and protection against short circuits, even under external forces such as vibrations and impacts, without increasing module size.
3Reliability
If the electrode terminal connecting member is designed with coupling structures for interconnection, then electrical connection is improved, but the structure becomes more complex and vulnerable to dislocation
Solution Approach 1:
The insulating joint member combines the coupling function, electrical connection function, and insulating function into a single integrated component. The conductive portions provide electrical connection between electrode terminals while the insulating portions provide structural coupling and support. This integration eliminates complex separate coupling structures and reduces the number of parts, thereby simplifying the overall structure while improving reliability.
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 solution effectively prevents short circuits and enhances structural stability, allowing for efficient electrical and mechanical coupling, improving productivity and reliability, especially in applications subject to external impacts.
Implementation Method 1
adjacent electrode terminal connecting members are prevented from contacting each other due to electrical insulation by the insulating joint member
Implementation Method 2
the insulating joint member supporting the electrode terminal connecting members mounted on the battery cells in the lateral direction, thereby providing structural stability of a battery module
Implementation Method 3
electrode terminals of adjacent battery cells are electrically connected to one another through the use of plate-shaped electrode terminal connecting members
Data Source
AI summary
Disclosed herein is a middle- or large-sized battery module having a structure in which two or more plate-shaped secondary battery cells (‘battery cells’) are arranged in a lateral direction thereof, wherein the battery cells have electrode terminals arranged in the same direction, plate-shaped electrode terminal connecting members to electrically connect the battery cells to one another are electrically connected to oriented surfaces of the electrode terminals of the battery cells, each of the electrode terminal connecting members is provided at a top and/or bottom thereof with a coupling structure to interconnect electrode terminal connecting members, and at least one end of an insulating joint member coupled in the coupling structure is supported by a module case.