Immersed Battery Module Tank Structure for Low-Pressure Cooling
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Solution Overview
Problem
Conventional immersed cooling methods for battery cells face issues with coolant leakage due to poor sealing and pipeline rupture from excessive pressure, necessitating high pump thrust.
Innovation Solution
The design incorporates an inner and outer tank structure with modular panels and connection pipelines to facilitate coolant circulation, reducing pump thrust and preventing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high pressure is applied to circulate coolant through sealed modules, then coolant circulation efficiency is improved, but pipeline rupture and seal deterioration occur
Solution Approach 1:
The system divides the battery cooling into independent battery tanks, each with its own cooling chamber. The cooling chambers are segmented and can operate independently, allowing coolant circulation in one tank without affecting others. This segmentation reduces the pressure burden on any single pipeline while maintaining overall cooling efficiency.
Solution Approach 2:
The battery tank acts as an intermediary container between the coolant pump and the battery cells. Instead of directly pressurizing the coolant through sealed modules, the tank provides a buffer chamber where coolant can circulate at lower pressures while still achieving effective cooling through the immersed design.
2Temperature
If sealed modules are used for battery cells, then cooling effectiveness is improved, but coolant leakage occurs due to poor sealing
Solution Approach 1:
The cooling chamber is nested within the battery tank structure. The battery cells are arranged in the cooling chamber which is itself contained within the larger battery tank. This nested arrangement allows the cooling system to be integrated without requiring separate sealed modules, reducing sealing interfaces and potential leakage points while maintaining effective cooling contact between coolant and cells.
3Productivity
If pump thrust is increased to ensure coolant circulation, then cooling performance is improved, but energy consumption and operational costs increase
Solution Approach 1:
The battery tank structure itself serves the dual function of containing both the battery cells and the cooling chamber. This self-service design eliminates the need for additional sealed modules and complex piping systems, allowing coolant to circulate more freely with lower pump thrust requirements while maintaining effective cooling performance.
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 effectively prevents coolant leakage and pipeline rupture while maintaining coolant circulation, allowing for efficient heat dissipation and reduced operational costs by minimizing pump operation time.
Implementation Method 1
the coolant directly touches the surface of the battery cell, the heat dissipation efficiency is high such that the heat of the battery cell can be more uniformly dissipated
Implementation Method 2
circulates the coolant to absorb heat energy
Data Source
Figure 1
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AI summary
An immersed cooled battery module (100) includes a battery tank (110), battery cells (120), and a modular panel (130). The battery tank (110) includes an outer tank (112) and an inner tank (114). The inner tank (114) is arranged in the outer tank (112). The inner tank (114) has an opening (115) connecting to the inner tank (114) and the outer tank (112). The battery cells (120) are arranged in the inner tank (114). The modular panel (130) is installed on one side of the outer tank (112). The modular panel (130) has a liquid inlet (132) and a liquid outlet (134). The liquid inlet (132) is connected to the inner tank (114). The liquid outlet (134) is connected to the outer tank (112). A coolant enters the inner tank (114) from the liquid inlet (132), then overflows to the outer tank (112) through the opening (115), and finally discharges from the liquid outlet (134) to complete the circulation of the coolant.