Battery Heat Exchange Plate with Multi-Stage Flow Channel Branching
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Solution Overview
Problem
Existing heat exchange components in electric vehicle batteries, such as harmonica tubes, have low channel distribution density, leading to inconsistent battery temperatures, which can result in excessive high or low temperatures, reducing battery stability and service life.
Innovation Solution
A heat exchange plate with a flow channel system that includes flow diverging junctions, allowing for multiple stages of divergence and convergence of the flow channel to enhance distribution density and improve temperature uniformity, specifically designed to correspond with battery post regions and non-post regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single tube or multiple tubes are arranged side by side in a harmonica tube, then the structure is simple, but the channel distribution density is low
Solution Approach 1:
The flow channel is segmented into multiple stages using flow diverging junctions and flow converging junctions. The first flow diverging junction divides the flow channel into multiple branches, and subsequent junctions further segment these branches, creating a multi-level segmented structure that increases channel distribution density while maintaining structural organization
Solution Approach 2:
The patent transitions from a two-dimensional planar arrangement of parallel tubes to a three-dimensional multi-level structure by introducing vertical segmentation through flow diverging junctions. This adds a vertical dimension to the channel distribution, allowing channels to be arranged in multiple layers and directions, thereby significantly increasing the channel distribution density within the same footprint
2Ease of manufacture
If a single tube or multiple tubes are arranged side by side in a harmonica tube, then the manufacturing is simple, but the temperature uniformity of the battery is poor
Solution Approach 1:
Different regions of the heat exchange plate are provided with different channel configurations tailored to local thermal requirements. The first-type region corresponding to the battery post region receives enhanced channel distribution through the flow diverging junction, while other regions have appropriate channel density, optimizing temperature uniformity across different battery zones without uniform complexity throughout
Solution Approach 2:
The flow channel structure incorporates dynamic flow distribution through multiple diverging and converging junctions that adaptively distribute coolant flow based on thermal demands of different battery regions. This dynamic flow allocation ensures optimal temperature uniformity across the battery while maintaining a relatively simple manufacturing process
3Device complexity
If the channel distribution density is low, then the device complexity is reduced, but the heat exchange efficiency is insufficient
Solution Approach 1:
The flow channel is segmented into multiple stages using flow diverging junctions and flow converging junctions. The first flow diverging junction divides the flow channel into multiple branches, and subsequent junctions further segment these branches, creating a multi-level segmented structure that increases channel distribution density while maintaining structural organization
Solution Approach 2:
The patent introduces flow diverging junctions and flow converging junctions as intermediary elements that mediate between the simple inlet/outlet structure and the complex multi-channel distribution network. These intermediary junctions enable efficient heat exchange by systematically distributing coolant to multiple channels without requiring direct complex routing from each inlet to every outlet
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 enhances heat exchange efficiency by increasing the distribution density of the flow channels, ensuring even temperature distribution across the battery, thereby improving battery stability and service life.
Implementation Method 1
a flow channel, the flow channel being arranged in the heat exchange plate, and the flow channel being configured to allow a heat exchange working medium to flow therein
Implementation Method 2
When the heat exchange component exchanges heat for the battery, a temperature of the battery is prone to be excessively high or low
Data Source
AI summary
A heat exchange plate includes a flow channel, a first terminal, and a second terminal; the flow channel is arranged in the heat exchange plate, and the flow channel is configured to allow a heat exchange working medium to flow therein; one end of the flow channel is communicated with the first terminal, another end of the flow channel is communicated with the second terminal, and the first terminal and the second terminal are configured to allow the heat exchange working medium to enter the heat exchange plate; the heat exchange plate includes a first-type region, and the first-type region is configured to be arranged corresponding to a battery pole region; the flow channel includes flow-dividing junctions; the flow-dividing junctions includes first-stage flow-dividing junctions arranged in the first-type region; the first-stage flow-dividing junction is arranged close to the first terminal or the second terminal; and divides the flow channel.