Battery Cell Separation Cooling Channels for Thermal Runaway Control
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Solution Overview
Problem
Current battery technologies face safety concerns due to thermal runaway issues, where heat generation velocity exceeds heat dissipation velocity, leading to potential combustion and explosion, especially when adjacent battery cells are not effectively cooled.
Innovation Solution
A battery design featuring at least two cells arranged along a preset direction with a separation member between them, incorporating a first cooling channel with an inlet and outlet configuration to facilitate efficient heat dissipation, preventing mutual interference and thermal runaway by allowing a medium to quickly discharge heat generated by the battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery cells are arranged adjacently to increase energy density, then the quantity of substance increases, but thermal insulation deteriorates and thermal runaway risk increases
Solution Approach 1:
The patent introduces separation members that divide the battery pack into independent compartments, physically segmenting adjacent battery cells. This segmentation prevents thermal runaway propagation between cells while maintaining high cell density arrangement, thus resolving the contradiction between quantity of substance and thermal safety.
Solution Approach 2:
The separation member acts as an intermediary structure between adjacent battery cells. It provides thermal insulation and electrical isolation while allowing compact arrangement of cells, enabling high energy density without compromising thermal safety through the mediating function of the separation member.
2Temperature
If cooling channels are extended to improve heat dissipation, then temperature control improves, but device complexity increases
Solution Approach 1:
The separation member serves multiple functions simultaneously: it provides thermal insulation between cells, structural support for the battery pack, and forms the cooling channels within its structure. This multi-functionality achieves effective heat dissipation without increasing device complexity, as the cooling channels are integrated into the separation member rather than being separate components.
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 battery safety by ensuring efficient thermal insulation and cooling, reducing the risk of thermal runaway and improving the overall safety and reliability of the battery.
Implementation Method 1
the separation member is disposed between two adjacent battery cells, so that the two battery cells can be separated from each other for electrical and thermal insulation
Implementation Method 2
a medium flows through the first cooling channel to cool the battery cell, thereby reducing the risk of thermal runaway in the battery cell
Implementation Method 3
the medium can quickly discharge heat generated by the battery cell
Data Source
AI summary
This application relates to a battery and an electric device. The battery includes: at least two battery cells arranged along a preset direction; and at least one separation member disposed between two adjacent battery cells in the preset direction and configured to separate the two adjacent battery cells, where a first cooling channel is formed between the separation member and at least one battery cell adjacent thereto, the separation member includes a first surface and a second surface disposed adjacent to each other, an inlet of the first cooling channel is located at the first surface, and an outlet of the first cooling channel is located at the second surface. The battery has high safety.