Battery Module Injection Channels for Slurry-Filled Cooling Gaps
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Solution Overview
Problem
Existing battery module assemblies suffer from poor heat dissipation due to gaps between the battery module and thermally conductive slurry or between the cooling component and the slurry, resulting in increased thermal resistance and reduced efficiency.
Innovation Solution
The battery module is designed with an injection channel on its limit frame, allowing thermally conductive slurry to be injected into an accommodation cavity formed between the battery module and the cooling component, ensuring full coverage and contact, thereby improving heat dissipation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If thermally conductive slurry is directly spread on the cooling component and the battery module is placed on it, then the assembly process is simple, but the heat dissipation performance is poor due to gaps between the battery module and slurry or cooling component and slurry
Solution Approach 1:
The patent uses hydraulic injection to deliver thermally conductive slurry through injection channels into the accommodation cavity. This hydraulic approach ensures complete filling of the cavity and eliminates gaps between components, resolving the contradiction between simple assembly and effective heat dissipation.
Solution Approach 2:
The patent introduces injection channels that penetrate the limit frame from multiple directions to access the accommodation cavity. This dimensional approach allows slurry injection from above rather than requiring direct access to the cavity bottom, enabling complete filling while maintaining assembly simplicity.
2Reliability
If thermally conductive slurry is injected through injection channels in the limit frame, then the accommodation cavity is fully filled improving heat dissipation, but the device structure becomes more complex
Solution Approach 1:
The limit frame serves multiple functions: it provides structural support for the battery module, contains injection channels for slurry delivery, and forms part of the housing. This multi-functionality reduces overall device complexity despite adding injection capabilities.
Solution Approach 2:
The patent combines the injection channels with the limit frame structure rather than making them separate components. The channels are integrated into the frame's walls, merging the injection system with the structural framework and reducing part count.
3Reliability
If the injection channel penetrates the end plate and insulation plate, then the slurry can be delivered to the accommodation cavity, but the processing requirements and costs increase
Solution Approach 1:
The patent introduces a connection pipe as an intermediary component that links the injection channel to the accommodation cavity. This mediator allows the injection channel to terminate in the limit frame while still delivering slurry effectively, reducing the precision requirements for penetrating multiple plates.
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 ensures effective filling of the accommodation cavity with thermally conductive slurry, reducing gaps and enhancing heat dissipation performance while lowering processing requirements and costs.
Implementation Method 1
thermally conductive slurry injected into an accommodation cavity between the battery module and a cooling component through the injection channel can fully fill the accommodation cavity, thereby improving a heat dissipation efficiency of the battery module
Data Source
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AI summary
A battery module (20), a battery module assembly and a production method therefor, and an apparatus. The battery module (20) comprises: a battery unit (30) and a housing (40). The battery unit (30) has a top surface, a bottom surface, and side surfaces connecting the top surface and the bottom surface. The housing (40) accommodates the battery unit (30). The housing (40) comprises limiting frames (50) and injection channels (200) provided on the limiting frames (50). The limiting frames (50) are provided around the side surfaces of the battery unit (30). The bottom of the battery module (20) is configured to form, with a cooling component (400), an accommodating cavity (500). The injection channels (200) are configured to be communicated with the accommodating cavity (500), so as to achieve injection of thermally conductive slurry from the injection channels (200) into the accommodating cavity (500). The battery module (20) is provided with the injection channels (200), and by means of the injection channels (200), the thermally conductive slurry injected into the accommodating cavity (500) between the battery module (20) and the cooling component (400) can fill the accommodating cavity (500), thereby improving the heat dissipation efficiency of the battery module (20).