Thermal Conducting Element for Battery Pack Temperature Monitoring
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Solution Overview
Problem
Existing temperature measurement systems for vehicular battery packs are slow in response, which can compromise driving safety due to inadequate thermal conduction and insulation, leading to inefficient temperature monitoring.
Innovation Solution
A temperature measuring assembly comprising a heat conducting element with a high thermal conductivity, such as a ceramic element, and a thermistor, arranged back-to-back for minimal thermal resistance, combined with a flexible output connecting element and a sealing connection element to enhance insulation and measurement speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional temperature measurement system is used for vehicular battery packs, then the structure is simple, but the response speed is slow and thermal conduction is inadequate
Solution Approach 1:
The patent merges the heat conducting element and temperature measuring element into a closely integrated assembly where the temperature measuring element is in direct thermal contact with the heat conducting element, which itself contacts the battery pack. This merging reduces thermal resistance and improves response speed without requiring a completely new system architecture.
Solution Approach 2:
The patent employs composite material structure by combining a heat conducting element (made of thermally conductive material) with a temperature measuring element (such as thermistor or thermal couple). This composite approach leverages the high thermal conductivity of the first material and the measurement capability of the second, achieving both fast thermal response and accurate temperature sensing.
2Reliability
If the heat conducting element and temperature measuring element are separately formed, then the manufacturing is easier, but the thermal connection may have higher resistance
Solution Approach 1:
The patent segments the temperature measurement function into two distinct but closely coupled components: a heat conducting element that contacts the battery pack and a temperature measuring element that senses temperature. This segmentation allows each element to be optimized for its specific function while maintaining manufacturability through separate formation followed by controlled assembly.
Solution Approach 2:
The heat conducting element acts as an intermediary between the battery pack and the temperature measuring element. It facilitates efficient thermal transfer from the battery pack to the measuring element while allowing the measuring element to remain electrically isolated and easily manufacturable as a separate component.
3Reliability
If insulation is enhanced to protect the temperature measuring element, then the reliability improves, but the thermal conduction efficiency may decrease
Solution Approach 1:
The patent applies local quality by providing insulation only where necessary - the temperature measuring element is insulated from the external environment and electrical components, while the heat conducting element maintains direct, uninsulated thermal contact with both the battery pack and the measuring element. This localized insulation approach protects the sensitive measuring element without impeding the thermal conduction path.
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 significantly reduces thermal resistance and response time for temperature measurement, ensuring accurate and rapid monitoring of battery pack temperatures, thus enhancing driving safety and operational efficiency.
Implementation Method 1
the heat conducting element is arranged for conducting heat of a to-be-measured device
Implementation Method 2
the temperature measuring element is a thermistor
Implementation Method 3
the temperature measuring element is provided with a thermal couple or a thermistor
Data Source
AI summary
A temperature measuring assembly and an electrical device. The temperature measuring assembly includes a heat conducting element and a temperature measuring element. The heat conducting element is arranged for conducting heat of a to-be-measured device. The temperature measuring element is thermally conductive with the heat conducting element so as to measure a temperature signal of the to-be-measured device according to the heat conducted by the heat conducting element and output the temperature signal to an output connecting element. The heat conducting element and the temperature measuring element are elements separately formed and may be connected as an integral element. The heat conducting element of the temperature measuring assembly has a good insulation and thermal conduction performance and is particularly suitable for measuring the temperature of the to-be-measured device and capable of shortening a temperature measurement response time of the temperature measuring element.