Battery Module Bus Bar Connection Structure with Insulating Elastic Member
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Solution Overview
Problem
Existing battery module connection structures are prone to short-circuiting due to exposed intermodule bus bars, and the assembly process is complex, requiring all components to be detached for reconfiguration if incorrect wiring occurs.
Innovation Solution
A connection structure featuring a fastening member and a space forming member with an elastic component that creates an insulating space between the bus bar and electrode, allowing for secure electrical connection and easy disconnection, preventing short-circuiting and enabling reversible assembly without detaching all components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If intermodule bus bars are exposed to facilitate wiring, then wiring accessibility is improved, but short-circuiting risk increases
Solution Approach 1:
An insulating cover is introduced as an intermediary component between the exposed bus bar and the surrounding environment. This cover includes an insertion hole that guides the bus bar while providing insulation, thus maintaining wiring accessibility while preventing short-circuiting by isolating the conductive bus bar from unintended contact with other conductive parts.
2Reliability
If all components are attached securely, then connection reliability is improved, but assembly flexibility decreases
Solution Approach 1:
The connection structure is divided into separable components: the insulating cover with the insertion hole, the bus bar, and the battery module terminal. This segmentation allows the bus bar to be inserted through the cover's insertion hole for secure connection when needed, while also enabling easy removal and reconfiguration if wiring errors occur, thus maintaining both connection reliability and assembly flexibility.
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-circuiting by ensuring electrical isolation when not in use and allows for reversible assembly, simplifying the connection process and improving the waterproof properties of the battery module.
Implementation Method 1
The elastic member is elastically deformed with a pressing force applied from the fastening member to the connecting portion of the bus bar to cancel the insulating space
Implementation Method 2
The space forming member is configured to provide the insulating space between the electrode and the connection portion of the bus bar to cut off electrical connection therebetween by restoring the deformed elastic member with a pressing force which decreases when the electrode and the connecting portion of the bus bar are separated
Data Source
AI summary
A connection structure for a battery module includes a fastening member and a space forming member. The fastening member presses a connecting portion of a bus bar against an electrode of the battery module to fasten the bus bar to the electrode. The space forming member has an elastic member disposed between the connecting portion of the bus bar and the electrode. The space forming member is configured to provide an insulating space between the connecting portion of the bus bar and the electrode. The elastic member is elastically deformed with a pressing force applied from the fastening member to the connecting portion of the bus bar to cancel the insulating space.