Comb-Shaped Battery Pack Cooling to Block Heat Transfer Between Cells
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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 with a heat non-diffusion cooling structure featuring a comb-shaped design, including thermal-conductive blocks with alternating fins and cavities, and an insulating sheet to prevent heat transfer between battery cells and the heat sink, ensuring heat is dissipated efficiently without transferring heat between adjacent cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat sink is used to dissipate heat from battery cells, then cooling performance is improved, but heat may transfer between adjacent battery cells through the heat sink
Solution Approach 1:
The heat sink is divided into multiple independent heat dissipation units, each corresponding to a specific battery cell. These units are separated by insulating sheets that prevent heat from transferring between adjacent cells, thus maintaining effective cooling while blocking harmful heat diffusion to neighboring cells.
Solution Approach 2:
Insulating sheets are introduced as intermediary materials between adjacent heat dissipation units. These sheets act as thermal barriers that block heat transfer pathways while allowing each unit to independently dissipate heat from its corresponding battery cell, resolving the contradiction between cooling efficiency and heat isolation.
2Temperature
If thermal-conductive blocks are used to transfer heat to the heat sink, then heat dissipation efficiency is improved, but heat conduction paths may create heat diffusion between adjacent cells
Solution Approach 1:
The thermal management system is segmented into independent thermal-conductive blocks, each associated with a specific battery cell. These blocks are spatially separated and isolated by insulating sheets, allowing efficient heat transfer from each cell to its dedicated heat sink unit while preventing heat diffusion to adjacent cells through the segmentation created by the insulating barriers.
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 ensuring heat is quickly dissipated to the outside, preventing overheating and enhancing the overall cooling efficiency of the battery pack.
Implementation Method 1
thermal-conductive blocks between the heat sink and the plurality of battery cells
Implementation Method 2
an insulating sheet to prevent heat transfer between battery cells and the heat sink
Data Source
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.