Coil Temperature Sensor Bracket for Faster Thermal Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing temperature detection devices for coils in rotary electric machines have a large number of components, which complicates attachment and reduces thermal responsiveness due to the use of resin components that conduct heat away from the sensor.
Innovation Solution
A temperature detection device featuring a metal bracket with a clamping portion that securely attaches the temperature sensor to the coil using elastic force, allowing direct contact and efficient heat transfer, thereby reducing the number of components and improving thermal responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If resin components (sensor holder, electric wire holder, and pad) are used to attach the temperature sensor to the coil, then the temperature sensor can be attached to the coil, but the number of components increases and thermal responsiveness deteriorates
Solution Approach 1:
The patent combines multiple resin components (sensor holder, electric wire holder, and pad) into a single integrated resin component. The temperature sensor and lead wire are both attached to this unified component, which is then fixed to the coil as one piece, reducing the total number of components while maintaining attachment functionality.
Solution Approach 2:
The integrated resin component serves multiple functions simultaneously: it holds the temperature sensor, holds the lead wire, and provides structural support for attachment to the coil. This multi-functional design eliminates the need for separate specialized components for each function.
2Ease of operation
If resin components are used to attach the temperature sensor to the coil, then the temperature sensor can be attached to the coil, but thermal responsiveness deteriorates due to heat conduction through resin
Solution Approach 1:
The patent changes the material parameter of the bracket from resin to metal, which has significantly higher thermal conductivity. This parameter change enables efficient heat conduction from the coil to the temperature sensor through the bracket, improving thermal responsiveness while the bracket simultaneously provides the attachment function.
3Reliability
If multiple resin components are used for attachment, then the temperature sensor can be securely attached to the coil, but the structure becomes more complex
Solution Approach 1:
The patent merges multiple attachment components into a single integrated resin component that securely holds both the temperature sensor and lead wire. This unified component maintains attachment security through its integrated structure while reducing complexity by eliminating the need for multiple separate components.
4Ease of operation
If resin components surround the coil and temperature sensor, then attachment is achieved, but heat conduction from coil to sensor is impeded
Solution Approach 1:
The patent introduces a metal bracket with high thermal conductivity to replace or supplement the resin components in the heat conduction path. This parameter change in material thermal conductivity enables efficient heat transfer from the coil to the temperature sensor, improving thermal responsiveness while maintaining attachment functionality.
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 enables easy attachment of the temperature sensor to the coil while enhancing thermal responsiveness by utilizing the metal bracket's high thermal conductivity for efficient heat collection and transfer, resulting in faster and more accurate temperature detection.
Implementation Method 1
heat is conducted from the coil to the temperature sensor through the resin components
Implementation Method 2
a bracket main body clamping the coil by elastic force
Data Source
AI summary
A temperature detection device that can facilitate attachment of a temperature sensor to a coil and can improve thermal responsiveness by a simple structure reduced in the number of components. Such a temperature detection device includes a temperature sensor including a thermosensitive body configured to detect temperature of a coil of a rotary electric machine to be mounted on a vehicle, and a metal bracket attaching the temperature sensor to the coil. The bracket includes a bracket main body clamping the coil by elastic force, and a joining portion joined to the temperature sensor. The bracket main body includes a clamping portion internally clamping the coil, and a heat collection portion that protrudes to outside of the clamping portion and is thermally coupled to the temperature sensor.