Comb-Shaped Battery Pack Cooling to Block Cell-to-Cell Heat Spread
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Solution Overview
Problem
Existing battery packs face challenges in efficiently dissipating heat generated during charging and discharging processes without transferring heat between adjacent battery cells, which can lead to overheating and damage.
Innovation Solution
A battery pack equipped with a heat non-diffusion cooling structure featuring a comb-shaped design, including thermal-conductive blocks with base plates and fins arranged in a specific pattern to prevent heat transfer between battery cells, and an insulating sheet to further block heat conduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling structure is used to dissipate heat from battery cells, then heat dissipation performance is improved, but heat may be transferred to adjacent battery cells causing overheating
Solution Approach 1:
The cooling structure is divided into independent thermal-conductive blocks, each serving a single battery cell. These blocks are separated by insulating sheets that segment the thermal pathways, preventing heat from one cell's cooling structure from transferring to adjacent cells while maintaining effective heat dissipation from each individual cell.
Solution Approach 2:
Insulating sheets are introduced as intermediary materials between adjacent thermal-conductive blocks. These insulating sheets act as thermal barriers that block heat conduction pathways between cells, allowing the cooling structure to efficiently remove heat from each cell without creating thermal bridges to neighboring cells.
2Temperature
If thermal-conductive blocks are placed between battery cells and heat sink, then heat transfer to heat sink is improved, but heat conduction between adjacent battery cells may occur
Solution Approach 1:
The thermal management system uses individually segmented thermal-conductive blocks for each battery cell rather than a continuous thermal conduction path. This segmentation ensures efficient heat transfer from each cell to its own thermal-conductive block while preventing lateral heat conduction between adjacent cells through the thermal management system.
Solution Approach 2:
The cooling structure implements local thermal management where each battery cell has its dedicated thermal-conductive block with optimized thermal properties. The insulating sheets between blocks create localized thermal zones, allowing each cell to be cooled independently with tailored thermal characteristics without affecting adjacent cells.
3Quantity of substance
If battery cells are arranged closely to increase energy density, then space utilization is improved, but heat dissipation becomes more difficult and heat transfer between cells increases
Solution Approach 1:
The thermal management system uses individually segmented thermal-conductive blocks for each battery cell rather than a continuous thermal conduction path. This segmentation ensures efficient heat transfer from each cell to its own thermal-conductive block while preventing lateral heat conduction between adjacent cells through the thermal management system.
Solution Approach 2:
Insulating sheets are introduced as intermediary materials between adjacent thermal-conductive blocks. These insulating sheets act as thermal barriers that block heat conduction pathways between cells, allowing the cooling structure to efficiently remove heat from each cell without creating thermal bridges to neighboring cells.
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
This design effectively blocks heat transfer between battery cells, improving cooling performance by allowing quick heat dissipation to the outside while preventing heat from being transferred to adjacent cells, thus enhancing the battery pack's cooling efficiency.
Implementation Method 1
thermal-conductive blocks between the heat sink and the plurality of battery cells
Implementation Method 2
heat sink continuously extending along the plurality of battery cells
Implementation Method 3
heat sink continuously extending along the plurality of battery cells
Implementation Method 4
an insulating sheet between adjacent base plates
Data Source
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AI summary
A battery pack equipped with a heat non-diffusion cooling structure having a comb shape, the battery pack includes a plurality of battery cells arranged in a first direction; a heat sink facing the plurality of battery cells in a second direction that is different from the first direction, the heat sink continuously extending along the plurality of battery cells; and thermal-conductive blocks between the heat sink and the plurality of battery cells, wherein the thermal-conductive blocks each include a base plate on one battery cell of the battery cells, and a first cavity and at least one fin alternately arranged in the first direction, the first cavity and the at least one fin being between the base plate and the heat sink.