Composite Battery Module Cooling Passage for Lower Weight
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Solution Overview
Problem
Existing battery modules face challenges in achieving effective cooling performance while maintaining a reduced weight, particularly for large power-consuming devices like electric vehicles, where traditional designs often compromise between cooling efficiency and weight reduction.
Innovation Solution
A battery module design incorporating a composite material housing with a cooling fluid passage system, featuring a main housing with recessed holding portions and sealing structures, and a second plate with a sealing portion to enhance coupling and thermal management, allowing for efficient heat transfer and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cooling structures are used to achieve effective cooling performance, then cooling efficiency is improved, but weight increases
Solution Approach 1:
The patent applies composite materials by integrating a first plate and a second plate made of different materials to form a cooling structure. The first plate is coupled to the battery module housing while the second plate faces the first plate with a cooling fluid passage formed between them. This composite structure enables effective heat dissipation through the cooling fluid while maintaining reduced weight compared to traditional single-material cooling systems.
2Weight of moving object
If composite materials are used to reduce weight, then weight is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent segments the cooling structure into distinct first plate and second plate components that can be manufactured separately and then coupled together. The first plate includes a first boundary portion coupled to the housing and a first exposure portion defining the cooling fluid passage. The second plate includes a second boundary portion coupled to the housing and a second exposure portion. This segmentation allows each component to be optimized and manufactured independently, reducing overall manufacturing complexity despite using composite materials.
3Temperature
If multiple plates with coupling structures are used to achieve robust coupling and effective cooling, then cooling performance and structural integrity are improved, but device complexity increases
Solution Approach 1:
The patent merges the cooling function with the structural housing components by integrating the first and second plates as part of the battery module housing structure. The first boundary portion and second boundary portion are coupled to the main boundary portion of the housing, while the first exposure portion and second exposure portion define the cooling fluid passage. This merging allows the cooling structure to serve both thermal management and structural support functions, reducing the need for separate cooling components and thereby reducing overall device complexity.
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 design achieves improved cooling performance and weight reduction by integrating different materials for the main housing and first plate, with the second plate's sealing structure ensuring robust coupling and effective heat radiation, addressing the limitations of traditional designs.
Implementation Method 1
a cooling fluid passage between the first plate and the second plate, the cooling fluid passage being configured to cool the battery cell assemblies
Data Source
AI summary
A battery module includes: one or more cell assemblies; a main housing comprising a main boundary portion surrounding an accommodation space in which the one or more cell assemblies are positioned; a first plate comprising a first boundary portion coupled with the main boundary portion and a first exposure portion exposed from the main boundary portion and defining a side of a cooling fluid passage for cooling the accommodation space; and a second plate facing the first plate and comprising a second boundary portion coupled with the main boundary portion and a second exposure portion exposed from the main boundary portion and defining an other side of the cooling fluid passage.