Battery Box Vent Channel Cooling for Thermal Runaway Emissions
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Solution Overview
Problem
The safety of batteries is compromised due to the risk of thermal runaway, which can lead to explosions or fires, as emissions generated during this process can ignite if not properly managed.
Innovation Solution
A box body with a cooling device is designed to accommodate the battery cell, featuring a first flow channel for discharging emissions and a cooling structure that increases the contact area between the emissions and the cooling device, enhancing cooling efficiency and reducing the risk of fire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional cooling device is used without enhanced cooling structure, then the device complexity is low, but the cooling capacity is insufficient and cannot effectively reduce emissions temperature
Solution Approach 1:
The cooling structure extends into the flow channel along the flow direction, transforming a simple surface cooler into a three-dimensional structure that occupies multiple spatial dimensions. This dimensional extension significantly increases the cooling surface area and contact time with emissions without proportionally increasing device complexity
Solution Approach 2:
The cooling structure is divided into multiple cooling sections arranged along the flow channel, with each section having cooling surfaces facing different directions. This segmentation allows the cooling device to handle emissions more effectively at different stages of flow, improving overall cooling capacity while maintaining modular structure
2Reliability
If the contact area between cooling device and emissions is increased, then the cooling capacity is improved, but the device complexity increases
Solution Approach 1:
The cooling structure serves multiple functions simultaneously: it provides cooling surfaces in multiple directions, extends the residence time of emissions in the cooling zone, and creates turbulence to enhance heat transfer. This multi-functionality achieves improved cooling capacity without proportionally increasing structural complexity
Solution Approach 2:
The cooling structure is positioned within the flow channel in a nested arrangement, where the cooling elements are integrated into the existing box body structure. This nesting approach maximizes the use of available space and increases cooling surface area without adding external complexity to the overall system
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 improved cooling capacity of the cooling device effectively reduces the temperature of emissions, minimizing the risk of fires and enhancing the overall safety of the battery.
Implementation Method 1
when the emissions flow through the cooling device in the first flow channel, the cooling device exchanges heat with the emissions so as to cool the emissions
Implementation Method 2
the cooling device exchanges heat with the emissions so as to cool the emissions, thereby reducing the temperature of the emissions
Data Source
AI summary
A box body, a battery, an electric apparatus and a manufacturing method of the battery, belonging to the field of energy storage devices. The box body includes a cooling device and a plurality of walls, where the plurality of walls enclose an accommodating space for accommodating a battery cell, an interior of at least one wall is provided with a first flow channel, and the first flow channel is used for discharging emissions generated by thermal runaway of the battery cell out of the box body. The cooling device is arranged in the first flow channel and used for cooling the emissions flowing through the cooling device. The cooling effect of the cooling device becomes better, the possibility of firing and burning of the emissions is reduced, and the safety of the battery is improved.