Battery Pack Liquid-Cooled Plate with Bottom-and-Side Heat Dissipation
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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 dissipate heat generated during 1C charging and discharging, leading to reduced performance and safety concerns 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 of the battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If only bottom cooling is used, then the structure is simple, but the heat dissipation efficiency is insufficient for high-capacity batteries
Solution Approach 1:
The cooling system is divided into separate bottom cooling plates and side cooling plates, each with independent cooling channels. This segmentation allows the system to maintain structural simplicity while significantly improving heat dissipation efficiency by addressing heat removal at multiple locations simultaneously.
Solution Approach 2:
The cooling system transitions from two-dimensional bottom cooling to three-dimensional cooling by adding side cooling plates. This dimensional expansion enables heat dissipation from multiple surfaces (bottom and sides), dramatically improving the overall heat removal capability for high-capacity batteries.
2Reliability
If liquid flow rate is increased to improve cooling, then the cooling efficiency improves, but the pump power consumption increases
Solution Approach 1:
The cooling system segments the liquid flow into multiple parallel channels through bottom cooling plates and side cooling plates. This segmentation reduces the flow rate requirement in each individual channel while maintaining overall cooling efficiency, thereby reducing pump power consumption.
Solution Approach 2:
By adding side cooling plates as additional cooling surfaces, the system increases the total heat exchange area. This dimensional expansion allows for lower flow rates to achieve the same cooling effect, reducing energy consumption while maintaining cooling efficiency.
3Reliability
If multiple cooling plates are added to improve side heat dissipation, then the heat dissipation effect improves, but the device complexity increases
Solution Approach 1:
The bottom cooling plates and side cooling plates are merged into an integrated cooling system with coordinated cooling channels. This merging approach improves heat dissipation effect while controlling device complexity through unified design and standardized components.
Solution Approach 2:
The cooling plates are designed with multi-functionality, serving both structural support and heat dissipation functions. This universal design reduces the need for additional dedicated cooling components, improving heat dissipation while minimizing increases in 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 proposed system effectively increases side heat dissipation, improves the battery pack's heat exchange efficiency, and extends its cycle life by maintaining a comfortable operating temperature range under harsh conditions, while maintaining a simple and cost-effective structure.
Implementation Method 1
a liquid-cooled bottom plate (1) for bottom cooling of a battery... multiple liquid-cooled side plates (2) used for side cooling of the battery
Implementation Method 2
a flow channel of each liquid-cooled side plate (2) interconnects with each other through a multi-pass device (3) to form a flow-channel structure
Implementation Method 3
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
Data Source
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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.