Double-Sided Battery Module Cooling With Leak-Safe Sealing
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Solution Overview
Problem
Conventional battery cell module assemblies face challenges in achieving efficient cooling due to limited cooling surface area and potential coolant leakage, which can lead to overheating and fire risks, particularly when both sides of the assembly are not adequately cooled.
Innovation Solution
A double-sided cooling structure is implemented with upper and lower coolant tubes and sealing parts to enhance cooling efficiency and prevent coolant leakage, utilizing a lower and upper cooling flow passage with integrated sealing mechanisms to maintain watertightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling flow passage is added to both surfaces of the battery cell module assembly, then cooling efficiency is improved, but watertight performance deteriorates causing coolant leakage
Solution Approach 1:
The cooling system is segmented into upper and lower independent cooling flow passages, allowing coolant to flow through both surfaces of the battery cell module assembly. This segmentation enables enhanced cooling efficiency while maintaining separate sealed pathways to prevent leakage
Solution Approach 2:
A sealing member is introduced as an intermediary component between the upper case and lower case to prevent coolant leakage. The sealing member specifically addresses the watertight performance issue at the connection interface where the upper and lower cooling passages meet, allowing both cooling passages to function without compromising sealing
2Temperature
If cooling fins are added to increase contact area, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The upper and lower cases serve dual functions: they provide structural enclosure for the battery cells while simultaneously incorporating cooling flow passages. This multi-functionality eliminates the need for separate cooling fins or additional cooling components, reducing overall device complexity while maintaining effective cooling
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 double-sided cooling structure effectively reduces temperature deviations among battery modules, prolongs battery lifespan, minimizes coolant leakage risks, and enhances assembly efficiency while maintaining a watertight seal.
Implementation Method 1
coolant flows through the lower cooling flow passage and the upper cooling flow passage to control a temperature deviation in the plurality of battery modules
Data Source
AI summary
A battery cell module assembly is provided. The battery cell module assembly includes a lower case having a lower cooling flow passage, battery modules seated in a cell area of the lower case, a side case disposed along a periphery of the cell area and coupled to the lower case, an upper case to cover the battery modules and an upper surface of the side case, the upper case including an upper cooling flow passage, a lower coolant tube connected to the lower cooling flow passage over a tube area of the lower case disposed outside the side case, and an upper coolant tube connected to the upper cooling flow passage under a tube area of the upper case disposed outside the side case. Coolant flows through the lower cooling flow passage and the upper cooling flow passage to control a temperature deviation in the battery modules.