Thermal Elements for Busbar Current-Sensing Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sensing structures in busbars, such as those used in electric vehicles or power distribution systems, face challenges in efficiently dissipating heat while maintaining mechanical stability and preventing distortion of magnetic fields, which can lead to cracking or breaking.
Innovation Solution
Incorporating a thermal element, such as a thermal filler or thermal plate, within or near the sensing structure of the busbar to facilitate heat dissipation and improve mechanical stability, while using a magnetic sensor to sense the increased magnetic field produced by the sensing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensing structure with slits or tapers is formed in the busbar to increase magnetic field for sensing, then measurement precision is improved, but the busbar's mechanical strength and heat dissipation capability deteriorate
Solution Approach 1:
The sensing structure segments the busbar cross-section by forming slits or tapers, which divides the current path and concentrates magnetic field lines in specific regions. This segmentation enables enhanced magnetic field sensing while the remaining solid portions of the busbar maintain structural integrity and heat dissipation pathways.
Solution Approach 2:
The sensing structure creates local quality changes in the busbar by forming slits or tapers only in specific regions where magnetic field concentration is needed. This localized modification allows the busbar to have different properties in different areas: enhanced magnetic field interaction at the sensing location while maintaining overall mechanical strength and thermal conductivity in other regions.
2Measurement precision
If a sensing structure with slits or tapers is formed in the busbar to increase magnetic field for sensing, then measurement precision is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The sensing structure segments the busbar cross-section by forming slits or tapers, which divides the current path and concentrates magnetic field lines in specific regions. This segmentation enables enhanced magnetic field sensing while the remaining solid portions of the busbar maintain structural integrity and heat dissipation pathways.
Solution Approach 2:
The sensing structure creates local quality changes in the busbar by forming slits or tapers only in specific regions where magnetic field concentration is needed. This localized modification allows the busbar to have different properties in different areas: enhanced magnetic field interaction at the sensing location while maintaining overall mechanical strength and thermal conductivity in other regions.
3Measurement precision
If a sensing structure with slits or tapers is formed in the busbar to increase magnetic field for sensing, then measurement precision is improved, but reliability deteriorates due to increased likelihood of cracking or breaking
Solution Approach 1:
The sensing structure segments the busbar cross-section by forming slits or tapers, which divides the current path and concentrates magnetic field lines in specific regions. This segmentation enables enhanced magnetic field sensing while the remaining solid portions of the busbar maintain structural integrity and heat dissipation pathways.
Solution Approach 2:
The sensing structure creates local quality changes in the busbar by forming slits or tapers only in specific regions where magnetic field concentration is needed. This localized modification allows the busbar to have different properties in different areas: enhanced magnetic field interaction at the sensing location while maintaining overall mechanical strength and thermal conductivity in other regions.
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
Enhances heat dissipation and mechanical stability of the busbar, reducing the likelihood of cracking or breaking, and maintains accurate magnetic field sensing performance.
Implementation Method 1
An electric current flowing through a current-carrying conductor produces a magnetic field with a magnetic field flux density that is proportional to a magnitude of the electric current. Therefore, a magnetic field sensor can be used as a current sensor.
Implementation Method 2
a thermal element in or near the sensing structure, wherein the thermal element facilitates dissipation of heat through the sensing structure of the busbar
Data Source
AI summary
A system may include a busbar to conduct a current. The busbar may include a sensing structure. The system may include a magnetic sensor to sense a magnetic field produced by the current in the busbar. The magnetic sensor may be arranged near the sensing structure. The system may include a thermal element in or near the sensing structure. The thermal element may facilitate dissipation of heat through the sensing structure of the busbar.