Battery Electrical Box Thermal Conduction With Water-Ingress Sealing
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Solution Overview
Problem
The electrical box in batteries poses a safety risk due to poor sealing, leading to high-voltage short-circuit arcing from water infiltration, which affects heat dissipation and safety performance.
Innovation Solution
A thermally conductive structure is sealingly connected to the case, facilitating heat exchange and thermal conduction between the heat-generating component and the thermal management component, while ensuring a sealed connection to prevent liquid infiltration and reduce the risk of short-circuit arcing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heat-generating component is exposed outside the case for heat dissipation, then heat dissipation performance is improved, but sealing performance deteriorates leading to water infiltration risk
Solution Approach 1:
A thermally conductive structure serves as an intermediary component between the heat-generating component and the thermal management component. This structure enables heat transfer while maintaining sealing, replacing the need to expose components outside the case for heat dissipation.
Solution Approach 2:
The thermally conductive structure performs multiple functions simultaneously: it conducts heat from the heat-generating component to the thermal management component, maintains the sealing integrity of the case, and prevents water infiltration. This multi-functionality resolves the contradiction between heat dissipation and sealing.
2Reliability
If the thermally conductive structure is sealingly connected to the case, then sealing performance is improved preventing water infiltration, but heat conduction efficiency may deteriorate
Solution Approach 1:
The thermally conductive structure is made of a composite material or structure that simultaneously provides thermal conductivity and sealing capabilities. This allows the structure to maintain both heat conduction efficiency and sealing performance without compromise.
Solution Approach 2:
The thermally conductive structure has different local properties: regions in contact with the heat-generating component and thermal management component are optimized for heat conduction, while the connection interface with the case is optimized for sealing. This local differentiation resolves the contradiction between heat conduction and sealing.
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 efficiency, reduces overheating risks, and improves safety by preventing water ingress, thus extending the service life of the electrical box and battery.
Implementation Method 1
a thermally conductive structure sealingly connected to the case, the thermally conductive structure connecting the heat-generating component and the thermal management component
Data Source
Figure 1~2
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AI summary
The present application relates to the field of batteries, and provides a battery (1) and an electrical apparatus. The battery (1) includes a thermal management component (40) and an electrical box (30). The electrical box (30) includes a case (31) and a thermally conductive structure (32). The case (31) is configured to accommodate a heat-generating component (33). The thermally conductive structure (32) is sealingly connected to the case (31), and the thermally conductive structure (32) connects the heat-generating component (33) and the thermal management component (40). The electrical box (30) of the battery (1) facilitates heat exchange between the heat-generating component (33) and the thermal management component (40) via the thermally conductive structure (32) to meet the heat dissipation requirements of the electrical box (30). Additionally, by sealingly connecting the thermally conductive structure (32) to the case (31), connection gaps are sealed to prevent liquid infiltration into the interior of the case (31), thereby enhancing the sealing performance of the electrical box (30) and reducing the risk of high-voltage short-circuit arcing in the electrical box (30) due to water infiltration.