Secondary Battery Module Elastic Terminal Alignment
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Solution Overview
Problem
Conventional secondary battery modules face reliability issues due to increased contact resistance caused by external factors like vibration, and the screwing-based voltage detection terminal connection process is cumbersome, leading to higher manufacturing costs.
Innovation Solution
The implementation of an annular member with elastic deformation portions that align and bias the connection terminal and voltage detection terminal, ensuring direct contact and secure electrical conduction, thereby enhancing reliability and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the bus bar is press-inserted into between the clipping pieces of the terminal, then the terminal can be attached to the bus bar without screwing, but the connection force between the terminal and the bus bar may be lowered by external causes such as vibration
Solution Approach 1:
The terminal structure incorporates a movable clipping piece that can dynamically adjust its position. When vibration or external forces act on the connection, the clipping piece can move to maintain optimal contact pressure, preventing loss of connection force while preserving the ease of press-insertion assembly method.
Solution Approach 2:
The terminal is divided into separate clipping pieces that can independently adjust and conform to the bus bar surface. This segmentation allows each clipping piece to maintain individual contact pressure, ensuring reliable connection even under vibrational stress while keeping the assembly process simple.
2Reliability
If the plurality of voltage detection terminals are connected by screwing, then the connection is secure, but the operability in a wiring process is poor and manufacturing cost increases
Solution Approach 1:
The invention replaces the screwing mechanical system with a press-insertion system using elastic clipping pieces. This substitution eliminates the need for threading operations, screwdrivers, and torque control, dramatically improving assembly efficiency while maintaining secure connections through elastic clamping force.
Solution Approach 2:
The clipping pieces are designed to automatically secure the bus bar through elastic deformation and friction-based holding. The structure self-adjusts to maintain connection security without requiring additional fastening operations or complex assembly procedures, enabling simple press-insertion while ensuring reliable electrical connection.
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 provides a secondary battery module with improved reliability against external causes and streamlined assembly, reducing contact resistance and manufacturing costs by ensuring secure electrical conduction through the annular member's elastic deformation mechanism.
Implementation Method 1
an elastic deformation portion biasing the connection terminal and the voltage detection terminal in directions of making the connection terminal and the voltage detection terminal press each other
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
A secondary battery module (100) includes an annular member (40) making a tip end (21a) of a connection terminal (21) of a bus bar (20) and a tip end (31a) of a voltage detection terminal (31) inserted therein in an axial (A) direction to be aligned with each other in terms of directions. The annular member includes an elastic deformation portion (41) biasing the connection terminal and the voltage detection terminal in directions of making the connection terminal and the voltage detection terminal press each other. Accordingly, reliability to deal with an external cause is high, and an assembling operation is facilitated.