Rechargeable Battery Temperature Detection via Conductive Adhesive
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Solution Overview
Problem
Current rechargeable batteries face challenges in achieving excellent temperature detecting performance due to inadequate contact between thermally responsive devices and the battery, which can lead to ineffective thermal management and safety risks.
Innovation Solution
A thermally responsive device is integrated with a support member that ensures close contact with the pouch of the rechargeable battery, enhancing temperature detection performance by maintaining direct heat transfer and improved electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a thermally responsive device is used for temperature detection, then temperature detection function is provided, but temperature detection precision is insufficient due to inadequate contact with the battery
Solution Approach 1:
A thermally conductive adhesive is introduced as an intermediary substance between the thermally responsive device and the battery pouch. This adhesive serves as a thermal mediator that ensures efficient heat transfer from the battery to the sensing device while maintaining reliable physical contact, thereby improving temperature detection precision without compromising contact reliability.
Solution Approach 2:
The patent replaces mechanical fastening methods (such as clips or fasteners) with a thermally conductive adhesive bonding system. This substitution eliminates mechanical contact issues while providing continuous thermal contact between the thermally responsive device and the battery surface, improving both measurement precision and contact reliability.
2Measurement precision
If the thermally responsive device is positioned away from the battery, then electrical connection is simplified, but temperature detection accuracy deteriorates
Solution Approach 1:
The patent merges the thermally responsive device with the battery assembly by bonding it directly to the battery pouch using thermally conductive adhesive. This integration ensures the sensing device remains in close proximity to the heat source for accurate temperature detection while the adhesive simultaneously provides electrical insulation, simplifying the overall structure by eliminating the need for separate mounting and insulation components.
Solution Approach 2:
The thermally conductive adhesive is applied locally at the contact interface between the thermally responsive device and the battery pouch. This localized application provides targeted thermal conduction where needed while maintaining electrical insulation properties, achieving accurate temperature detection without adding complex structural elements throughout the entire device.
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 improves temperature detection accuracy and reliability, ensuring better thermal management and safety by maintaining close contact between the thermally responsive device and the battery, thus addressing the existing limitations in temperature detection.
Implementation Method 1
a thermal conductive structure where the thermally responsive device closely contacts the rechargeable battery that emits heat
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A rechargeable battery comprises improved temperature detection performance of a resistor element. The rechargeable battery includes a pouch in which an electrode assembly is embedded, a first terminal and a second terminal that are connected to the electrode assembly to extend out to one side of the pouch, a resistor element that is connected to the first terminal, and a support member that is coupled to the pouch and closely urges one surface of the resistor element to the pouch.