Crimped Bus Bar Temperature Sensor Attachment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for attaching temperature detection members to bus bars in electricity storage modules, such as those in electric automobiles, require additional fastening members and increase the number of parts and work steps, especially when using laser welding for bus bar connections.
Innovation Solution
A structure that crimps a plate-shaped detection portion with a crimped piece directly to the bus bar, eliminating the need for separate fastening members and reducing the number of parts and work steps, while ensuring reliable connection and positioning through recessed portions and abutting pieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated fastening member is used to fix the temperature sensor to the bus bar, then the temperature sensor can be reliably fixed, but the number of parts increases and a separate fixing task is needed
Solution Approach 1:
The temperature sensor is integrated with the bus bar by forming an integrated structure where the temperature sensor is embedded in or attached to the bus bar body, eliminating the need for separate fastening members and reducing the number of parts while maintaining reliable thermal contact
2Reliability
If a dedicated fastening member is used to fix the temperature sensor to the bus bar, then the temperature sensor can be reliably fixed, but the number of work steps increases
Solution Approach 1:
The temperature sensor attachment is merged with the bus bar manufacturing process, allowing the temperature sensor to be attached during bus bar formation or assembly operations rather than requiring a separate fastening step, thereby reducing the number of work steps while ensuring reliable attachment
3Device complexity
If the detection portion is overlaid on the bus bar without a crimped piece, then the structure is simpler, but the connection between the detection portion and bus bar is not reliable
Solution Approach 1:
The detection portion transitions from a simple planar overlay to a three-dimensional structure with a crimped piece that wraps around or engages with the bus bar, adding vertical dimensionality to the connection and significantly improving mechanical and thermal contact 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
This solution reduces the number of parts and work steps required for attaching temperature detection members to bus bars, enhances reliability by preventing misalignment, and maintains a stable contact state, thus improving the efficiency and simplicity of the attachment process.
Implementation Method 1
the detection portion has a crimped piece that is crimped to the bus bar
Implementation Method 2
the temperature detection member is configured to detect the temperature of the bus bar
Data Source
AI summary
A structure for attaching a temperature detection member to a bus bar includes: a bus bar that is overlaid on electrode terminals of single-cell batteries each having positive and negative electrode terminals and electrically connects adjacent electrode terminals of the plurality of single-cell batteries; and a temperature detection member configured to detect the temperature of the bus bar, wherein the temperature detection member includes a plate-shaped detection portion, the detection portion being overlaid on a region of the bus bar other than regions overlaid on the electrode terminals, and the detection portion has a crimped piece that is crimped to the bus bar.