Voltage Detection Terminal Holding Structure for Vehicle Battery Packs
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Solution Overview
Problem
Conventional voltage detection terminal holding structures in vehicle battery packs are inefficient due to poor assembling properties, increased manufacturing costs, and weight, primarily because they require a large peripheral wall for fixing the voltage detection terminal, which is not optimal for size reduction and cost-effectiveness.
Innovation Solution
A voltage detection terminal holding structure that includes a temporary fixing part between the electric connection and wire connection parts, allowing movement regulation in the axis direction while permitting perpendicular displacement and rotation, thus eliminating the need for a peripheral wall and enabling downsizing of the wire routing body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a peripheral wall structure is used to fix the voltage detection terminal, then the terminal can be securely held, but the wire routing body size increases and manufacturing cost rises
Solution Approach 1:
The voltage detection terminal is divided into separate functional parts: the electric connection part that contacts the bus bar, the wire connection part for the detection wire, and the temporary fixing part with positioning protrusions. This segmentation eliminates the need for a large peripheral wall structure while maintaining secure positioning through localized fixing points.
Solution Approach 2:
The invention extracts the essential positioning and fixing function from the peripheral wall structure and concentrates it into a compact temporary fixing part with positioning protrusions. This extraction removes the unnecessary peripheral wall while preserving the terminal holding capability.
2Reliability
If a peripheral wall structure is used to fix the voltage detection terminal, then the terminal can be securely held, but manufacturing cost increases
Solution Approach 1:
By segmenting the terminal structure into modular components with integrated positioning features, the invention reduces the amount of material and processing required compared to a peripheral wall structure, thereby lowering manufacturing costs while maintaining fixing reliability.
Solution Approach 2:
The temporary fixing part serves multiple functions: positioning the terminal, securing it to the bus bar holding part, and allowing for easy assembly and disassembly. This multi-functionality eliminates the need for separate peripheral wall structures and additional fixing mechanisms, reducing overall manufacturing complexity and cost.
3Manufacturing precision
If the voltage detection terminal is rigidly fixed, then positioning is accurate, but the bus bar cannot accommodate oscillation or rotation
Solution Approach 1:
The temporary fixing part provides a dynamic fixing solution where the positioning protrusions guide the terminal into accurate position during assembly, but allow controlled movement and oscillation of the bus bar during operation. This dynamic characteristic enables both precise positioning and adaptability to bus bar movement.
Solution Approach 2:
The fixing structure changes its constraint parameters from fully rigid to selectively flexible, allowing movement in certain directions while maintaining positional accuracy in critical dimensions. This parameter change enables the terminal to remain accurately positioned while accommodating bus bar oscillation and rotation.
Data Source
AI summary
A voltage detection terminal holding structure includes a bus bar holding part and the voltage detection terminal held in the bus bar holding part. The voltage detection terminal includes an electric connection part configured to be connected to a bus bar, a wire connection part configured to be connected to an electric wire, and a temporary fixing part. The temporary fixing part is formed between the electric connection part and the wire connection part. The temporary fixing part is temporarily fixed to the bus bar holding part in a state that a movement in a axis direction in an end of the electric wire connected to the wire connection part is regulated and in a state that a displacement in a perpendicular direction to the axis direction and a rotation around the axis direction are allowed.