Flexible Battery Heat Exchange Assembly With Hot-Pressed Flow Channels
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Solution Overview
Problem
Existing battery technologies face challenges in effectively dissipating heat generated by battery cells, leading to reduced performance and shortened service life due to inefficient heat exchange systems that do not fit well with the battery cells and require costly assembly tolerances and sealants.
Innovation Solution
A heat exchange assembly using flexible members stacked and hot-pressed to form a heat-sealed zone and flow channel region, allowing for improved fit and heat exchange efficiency without the need for sealants, with non-heat-sealed zones to mitigate stress and temperature issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If 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 members instead of rigid structures to create the heat exchange assembly. These flexible members can be hot-pressed to form the required structural shape while maintaining flexibility, thereby reducing weight without sacrificing structural integrity. The flexible nature allows the assembly to conform to battery cell surfaces effectively.
Solution Approach 2:
The heat exchange assembly uses composite flexible members that combine different material properties to achieve both structural strength and weight reduction. The composite structure allows optimization of mechanical properties while keeping the overall weight low, resolving the contradiction between strength and weight.
2Manufacturing precision
If rigid heat exchange assemblies are used, then manufacturing precision is improved, but adaptability to different battery configurations decreases
Solution Approach 1:
The patent transforms the static rigid structure into a dynamic flexible structure that can adapt its shape. The flexible members can deform and conform to different battery cell geometries and assembly tolerances, providing high adaptability while maintaining manufacturing precision through controlled hot-pressing processes.
Solution Approach 2:
The flexible members act as adaptable interfaces between the heat exchange assembly and battery cells. Their flexibility allows them to accommodate variations in battery cell dimensions and positioning, ensuring consistent thermal contact across different configurations without requiring high-precision rigid components.
3Reliability
If heat exchange assembly requires sealants and thermally conductive materials, then sealing reliability is improved, but production cost increases
Solution Approach 1:
The flexible members are designed to self-seal through the hot-pressing process without requiring external sealants. The material properties of the flexible members enable them to form sealed connections directly during assembly, eliminating the need for additional sealing materials and reducing production costs while maintaining sealing reliability.
Solution Approach 2:
The patent combines the sealing function and thermal conduction function into a single integrated flexible member structure. By merging these functions, the design eliminates the need for separate sealants and thermally conductive materials, reducing component count and production cost while ensuring both sealing and thermal performance through the inherent properties of the flexible members.
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 reduces weight and production costs while enhancing heat exchange efficiency and area, improving the fit with battery cells and case assembly, thus increasing energy density and reliability.
Implementation Method 1
the at least two flexible members form a hot-pressed region and a flow channel region by hot pressing
Implementation Method 2
the flow channel region is configured to circulate a heat exchange medium 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 battery cell assembly is disposed within the case assembly. The heat exchange assembly is disposed within the case assembly. The heat exchange assembly includes at least two flexible members, where the at least two flexible members are stacked, and the at least two flexible members form a hot-pressed region and a flow channel region by hot pressing. The flow channel region is configured to circulate a heat exchange medium to exchange heat with the battery cell assembly; and the hot-pressed region includes a heat-sealed zone, and the at least two flexible members are interconnected within the heat-sealed zone.