Battery Pack Liquid-Cooled Plate With Multi-Pass Side Cooling
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Solution Overview
Problem
Current battery pack cooling systems, primarily located at the bottom, are insufficient for high-capacity batteries as they cannot quickly remove heat generated during 1C charging and discharging, leading to reduced performance and safety risks due to high temperatures.
Innovation Solution
A battery pack liquid-cooled system comprising a liquid-cooled bottom plate and side plates with interconnected cooling channels and a multi-pass device, allowing for efficient heat dissipation from both the bottom and sides, enhancing the cooling efficiency and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only bottom cooling is used, then the structure is simple, but the heat dissipation effect is insufficient for high-capacity batteries
Solution Approach 1:
The patent transitions from single-dimensional bottom cooling to multi-dimensional cooling by adding side cooling plates that extend the cooling channels along the lateral surfaces of battery modules. This dimensional expansion allows cooling liquid to contact larger surface areas of the battery, significantly improving heat dissipation capacity while maintaining reasonable structural complexity through modular design
2Temperature
If liquid flow rate is increased to improve heat dissipation, then the cooling effect improves, but the pump power consumption increases
Solution Approach 1:
The patent designs continuous cooling channels that extend along the entire length of the bottom plate and side plates, ensuring uninterrupted liquid flow paths. This continuous action allows efficient heat removal throughout the battery pack without requiring high flow rates, thereby reducing pump power consumption while maintaining effective cooling
Solution Approach 2:
By adding side cooling dimensions, the patent increases the total heat exchange surface area, which improves heat dissipation efficiency without needing to increase liquid flow rate. The extended surface area provides more opportunities for heat transfer, reducing the demand for high-velocity fluid flow
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 increases side heat dissipation, improves the heat dissipation effect, and stabilizes the assembly process, ensuring batteries operate within a comfortable temperature range, thereby extending their cycle life and improving efficiency.
Implementation Method 1
a liquid-cooled bottom plate (1) for bottom cooling of a battery, wherein a first cooling channel is provided in the liquid-cooled bottom plate (1)
Implementation Method 2
The flow channel in each liquid-cooled bottom plate (1) interconnects with the bottom plate interface (43) of two liquid distribution boxes (4) to form the first cooling channel; the flow channel structure interconnects with the side plate interface (44) of the two liquid distribution boxes (4) to form the second cooling channel
Data Source
AI summary
The present application relates to the technical field of battery equipment and electric vehicles, disclosing a battery pack liquid-cooled plate and a battery pack. A battery pack liquid-cooled plate comprises: a liquid-cooled bottom plate for bottom cooling of a battery, wherein a first cooling channel is provided in the liquid-cooled bottom plate; multiple liquid-cooled side plates used for side cooling of the battery, wherein a second cooling channel is provided in each liquid-cooled side plate, each liquid-cooled side plate and the liquid-cooled bottom plate are arranged perpendicular to each other, and a flow channel of each liquid-cooled side plate interconnects with each other through a multi-pass device to form a flow-channel structure.