Battery Sensor Pole Line Thermal Conduction
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Solution Overview
Problem
Emergency lighting systems require immediate readiness with reliable battery monitoring, but existing battery sensor devices face challenges in timely and accurate temperature measurement due to longer and smaller cross-sectioned connecting lines, leading to potential thermal losses and delays.
Innovation Solution
A battery sensor device with a shorter, larger cross-sectioned first pole connecting line to the negative battery electrode, integrated temperature sensors like thermistors, and a wireless connection for efficient data transmission, along with thermal insulation and conductive adhesives to minimize losses and ensure prompt temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If longer and smaller cross-sectioned pole connecting lines are used, then the device complexity is reduced, but the temperature measurement accuracy deteriorates due to thermal losses
Solution Approach 1:
The patent applies local quality by differentiating the dimensions of pole connecting lines based on their function. The first pole connecting line (for temperature measurement) has a larger cross-section and shorter length compared to the second pole connecting line (for power connection). This localized optimization ensures minimal thermal losses for temperature sensing while maintaining adequate power connection capabilities.
2Speed
If the first pole connecting line is made shorter with larger cross section, then the temperature measurement speed and accuracy improve, but the device complexity increases
Solution Approach 1:
The patent implements asymmetry by making the first pole connecting line asymmetrically shorter and with a larger cross-section compared to the second pole connecting line. This asymmetric design optimizes the temperature measurement path while the other connection line maintains standard dimensions for power connection, thus resolving the contradiction between measurement speed and device complexity.
3Loss of energy
If the temperature sensor is connected directly to the first pole connecting line, then thermal losses are minimized, but the reliability decreases due to potential external influences
Solution Approach 1:
The patent introduces a thermal paste as an intermediary substance between the temperature sensor and the first pole connecting line. This thermal paste serves as a mediator that maintains excellent thermal contact (minimizing thermal losses) while providing protection and stability to the temperature sensor connection, thus resolving the contradiction between minimizing thermal losses and ensuring 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
Enables timely and accurate temperature measurement with minimal losses, ensuring high accuracy and reduced delays in emergency lighting systems, with deviations from actual battery temperature kept below 1°C, suitable for slow-changing battery temperatures.
Implementation Method 1
the first pole connecting line has a larger cross section than the second pole connecting line. Due to this larger cross section and the shorter length of the first pole connecting line, the corresponding pole temperature can be transmitted promptly and with few losses.
Implementation Method 2
the temperature sensor is a thermistor and in particular an NTC resistor. Such resistors are also called thermistors and have, for example, a negative temperature coefficient as an essential property
Implementation Method 3
a thermal paste or a thermally conductive adhesive can be applied in this area between the corresponding conductor track and the first pole connecting line. The use of such a material reduces the thermal resistance through possible air passages.
Implementation Method 4
the first pole connecting line is double insulated, if necessary
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~4B
AI summary
A battery sensor device is arranged on a battery block or battery cell, particularly a rechargeable one, and connected to corresponding battery terminal electrodes via first and second terminal connecting leads. At least the battery voltage of the battery block or battery cell and the battery temperature can be measured by the battery sensor device. To enable simple and rapid determination of the battery temperature, the temperature of a battery terminal electrode can be measured by a temperature sensor integrated into the battery sensor device via just one of the terminal connecting leads.