Battery Cooling Structure With Insulative Sheet
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Solution Overview
Problem
A small gap between the cooling surface of a battery module and a cooling plate hinders effective heat transfer, degrading the cooling performance of battery modules.
Innovation Solution
An electrically insulative sheet with good heat transfer properties is placed between the cooling surface and the cooling plate, along with a deformable heat transfer sheet, to bridge the gap and enhance heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a rigid cooling plate is used to cool the battery module, then the structural strength and cooling capacity are improved, but a gap is formed between the cooling plate and the cooling surface, which degrades heat transfer performance
Solution Approach 1:
An electrically insulative sheet is introduced as an intermediary component between the cooling plate and the battery cooling surface. This sheet eliminates the gap that forms between rigid components while maintaining good heat transfer properties, thus resolving the contradiction between structural rigidity and heat transfer efficiency.
Solution Approach 2:
The patent changes the physical state and properties of the intermediate layer by using a deformable heat transfer sheet with specific thermal conductivity characteristics. This allows the gap to be eliminated through deformation of the sheet while maintaining effective heat transfer, transforming the rigid-rigid interface into a compliant interface with optimized thermal properties.
2Reliability
If a heat transfer sheet is added to eliminate the gap, then heat transfer performance is improved, but device complexity increases
Solution Approach 1:
The electrically insulative sheet serves multiple functions simultaneously: it acts as a heat transfer medium, provides electrical insulation between the cooling plate and battery, and eliminates the gap between rigid components. By combining multiple functions into a single component, the patent avoids increasing device complexity while improving heat transfer performance.
3Reliability
If the cooling plate directly contacts the cooling surface, then heat transfer is maximized, but electrical conduction may cause ground faults
Solution Approach 1:
The electrically insulative sheet serves as a mediator that provides electrical isolation between the cooling plate and the battery while maintaining thermal contact. This resolves the contradiction by allowing heat transfer through the insulative material while preventing harmful electrical conduction that could cause ground faults.
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 effectively eliminates the gap and improves the cooling performance of battery modules by ensuring efficient heat transfer from the battery cells to the cooling plate, preventing heat insulation and ground faults.
Implementation Method 1
The electrically insulative sheet has an electrical non-conductivity and is disposed between the cooling surface of the battery module and the cooling plate to transfer heat from the cooling surface to the cooling plate
Data Source
AI summary
A battery cooling structure includes a cooling plate and an electrically insulative sheet. The cooling plate is to support a cooling surface of a battery module to cool the battery module including a plurality of battery cells arranged side by side. The electrically insulative sheet has an electrical non-conductivity and is disposed between the cooling surface of the battery module and the cooling plate to transfer heat from the cooling surface to the cooling plate.