Vapor Chamber Battery Case for Balanced Module Heat Dissipation
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Solution Overview
Problem
Current battery casings, primarily made of aluminum, struggle to effectively cool battery modules, leading to potential thermal runaway and safety issues due to inadequate heat dissipation.
Innovation Solution
The integration of a vapor chamber structure into the battery case, which directly contacts the battery cells and the bottom protective plate, enhances thermal conductivity and prevents localized overheating by facilitating efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If aluminum casing is used for battery protection, then structural strength and ease of manufacture are improved, but heat dissipation capability deteriorates leading to thermal runaway risk
Solution Approach 1:
The battery case combines aluminum alloy material with vapor chamber structure to create a composite thermal management system. The aluminum case provides structural strength while the vapor chamber (made of copper or aluminum) provides superior heat dissipation through phase change heat transfer, resolving the contradiction between structural requirements and thermal management needs
Solution Approach 2:
The vapor chamber utilizes phase transition of working fluid (liquid to vapor and back) to transfer heat efficiently from battery cells to the aluminum case and external environment. This phase change mechanism enables effective heat dissipation while maintaining the structural integrity of the aluminum case
2Temperature
If vapor chamber is placed between battery cells for cooling, then heat dissipation is improved, but assembly complexity and device complexity increase
Solution Approach 1:
The vapor chamber is integrated directly into the battery case structure, merging the cooling function with the protective housing. This eliminates the need for separate cooling components between cells, reducing assembly complexity while maintaining effective heat dissipation through the case structure
Solution Approach 2:
The battery case serves dual functions: structural protection and thermal management. By incorporating the vapor chamber into the case design, the same component performs both protective and cooling functions, simplifying the overall system architecture and assembly process
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
This solution effectively maintains the battery at a balanced temperature, reducing the risk of thermal runaway and enhancing safety, while also improving the assembly process and stability of the battery module.
Implementation Method 1
A vapor chamber is a type of heat transfer element that uses the latent heat of phase change of the working fluid to remove heat
Implementation Method 2
A vapor chamber is a type of heat transfer element that uses the latent heat of phase change of the working fluid to remove heat
Implementation Method 3
at least one of the base plate and the side plate comprises a vapor chamber structure
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A battery case (100) and a battery module are provided. The battery case (100) includes a top cover assembly (300), a base plate (101), and a side plate (102) connected to the base plate (101). The base plate (101) and the side plate (102) enclose an installation cavity (103) which is sealed by the top cover assembly (300). Among them, at least one of the base plate (101) and the side plate (102) includes a vapor chamber structure. The battery case (100) and the battery module have good heat dissipation performance.