Wiring Module Sensor Mounting for Stable Battery Temperature Sensing
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Solution Overview
Problem
Power storage apparatuses without structural objects like casings or support members face challenges in securing a structure to hold and bias sensor components effectively.
Innovation Solution
A wiring module with a flexible substrate, a sensor component, a connecting member, and a holding part-equipped relay member that includes a base part, a pedestal part, and a biasing member with elastic force, which connects the flexible substrate and connecting member, allowing the pedestal part to be displaced and fixed to the sensor component's location, providing the necessary biasing force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a power storage apparatus does not include a structural object such as a casing or support member, then weight and cost are reduced, but it becomes difficult to secure a structure for holding and biasing the sensor component
Solution Approach 1:
The patent combines the sensor holding function with the existing wiring module structure. The relay member, which originally serves to connect the flexible substrate to the connecting member, is modified to include a holding part that accommodates the sensor component. This merging of functions eliminates the need for separate support structures, thereby reducing weight while maintaining sensor holding capability
Solution Approach 2:
The relay member is designed to perform multiple functions: it serves as both a connecting element between the flexible substrate and connecting member, and as a support structure for the sensor component through its integrated holding part. This multi-functionality allows the single component to replace what would traditionally require multiple separate structural elements
2Measurement precision
If the sensor component is held by an elastic body, then stable detection of surface temperature is achieved, but a structure is required to take on the reactive force from the elastic body
Solution Approach 1:
The holding part of the relay member is designed to accommodate the elastic body that biases the sensor component against the power storage battery surface. The relay member's structure integrates both the sensor mounting function and the reactive force bearing function, eliminating the need for separate structural support elements
Solution Approach 2:
The relay member acts as an intermediary structure between the elastic body and the external environment. It provides a mounting surface for the elastic body while its own structure absorbs and manages the reactive forces, preventing direct transmission to other components
3Measurement precision
If the sensor component is biased against the power storage battery surface, then accurate temperature detection is achieved, but the sensor requires a holding structure that increases overall device complexity
Solution Approach 1:
The relay member integrates the sensor holding function into its existing structure. The holding part is formed as an integral component of the relay member, combining the sensor mounting capability with the electrical connection function in a single element, thereby reducing overall device complexity
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
Enables the secure holding and biasing of sensor components within power storage modules without the need for structural objects like casings or support members, improving measurement accuracy even in vibrating environments.
Implementation Method 1
a biasing member that has elastic force, that has one end held by the base part, and that biases the pedestal part in the direction away from the base part
Data Source
AI summary
A wiring module includes a flexible substrate, a sensor component (temperature sensor), a connecting member (bus bar), and a holding part-equipped relay member, wherein the holding part-equipped relay member includes: a relay member main body including a base part (first main plate) that is to be fixed to the flexible substrate and the bus bar, and a holding part (first holding piece) that is continuous with the first main plate; a pedestal part (housing) that is to be held by the first holding piece so as to be displaceable in a direction toward or away from the first main plate, and that is to be fixed to a position of the flexible substrate where the temperature sensor is mounted; and a biasing member that has elastic force, that has one end held by the first main plate, and that biases the housing in the direction away from the first main plate.