Flexible Battery Heat Exchange Assembly for Leak-Safe Cooling
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Solution Overview
Problem
Existing battery technologies face challenges in effectively dissipating heat generated by battery cells, which affects performance and service life, and existing cooling systems can lead to leakage risks and increased weight.
Innovation Solution
A heat exchange assembly using flexible members with medium flow channels is integrated into the battery apparatus, allowing for efficient heat exchange without sealants, improving fit and reducing weight, and is positioned outside the accommodating cavity to prevent leakage and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rigid heat exchange assemblies are used, then structural strength is improved, but weight increases and energy density decreases
Solution Approach 1:
The patent employs flexible membrane structures to form heat exchange channels, replacing traditional rigid metal heat exchange assemblies. The flexible membrane allows the heat exchange assembly to maintain structural integrity while significantly reducing weight, thereby improving energy density of the battery apparatus.
2Reliability
If rigid heat exchange assemblies with sealants are used, then sealing reliability is improved, but device complexity and production costs increase
Solution Approach 1:
The patent eliminates sealants and complex sealing structures from the heat exchange assembly by using the flexible membrane itself to form the heat exchange channels. This extraction of unnecessary sealing components simplifies the overall structure, reduces production costs, and maintains reliable sealing through the inherent flexibility and conformability of the membrane.
Solution Approach 2:
The flexible membrane structure serves multiple functions simultaneously: it forms the heat exchange channels, provides sealing, and adapts to the contours of battery cells. This self-service capability eliminates the need for separate sealing components and reduces device complexity.
3Manufacturing precision
If rigid heat exchange assemblies are used, then manufacturing precision is improved, but adaptability to assembly tolerances deteriorates
Solution Approach 1:
The patent transitions from rigid to flexible heat exchange assembly structure. The flexible membrane can dynamically adapt its shape to accommodate assembly tolerances and variations in battery cell dimensions, while still maintaining precise heat exchange channels through controlled forming processes.
Solution Approach 2:
The flexible membrane allows for parameter changes in shape and configuration to adapt to different battery cell arrangements and assembly tolerances, while the heat exchange channel geometry is maintained through controlled forming, achieving both adaptability and manufacturing precision.
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 flexible heat exchange assembly enhances heat exchange efficiency, reduces weight and production costs, increases energy density, and prevents short circuits while maintaining compactness and reliability.
Implementation Method 1
at least one medium flow channel is formed between the flexible members, the at least one medium flow channel is configured to circulate a heat exchange medium, and the heat exchange medium is configured to exchange heat with the battery cell assembly
Data Source
AI summary
Embodiments of the present disclosure provide a heat exchange assembly, a battery apparatus, an electric device, and an energy storage device. The battery apparatus includes a case assembly, a battery cell assembly, and a heat exchange assembly. The case assembly has a first accommodating cavity inside. The battery cell assembly is disposed within the first accommodating cavity. The heat exchange assembly is disposed within the case assembly. The heat exchange assembly includes at least two flexible members. The at least two flexible members are stacked, and at least one medium flow channel is formed between the flexible members, where the at least one medium flow channel is configured to circulate a heat exchange medium, and the heat exchange medium is configured to exchange heat with the battery cell assembly.