Battery Box Vent Cooling Channels for Thermal Runaway Emissions
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Solution Overview
Problem
Existing battery technologies face challenges in enhancing safety, particularly in managing emissions generated by thermal runaway, which can lead to fires and explosions due to high temperatures and concentrations.
Innovation Solution
A box body with a cooling device and flow channels is designed to enhance contact area between emissions and the cooling device, incorporating features like multiple flow channels, retention spaces, and fire control mechanisms to manage and cool emissions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple cooling pipeline structure is used, then the structure is simple and convenient for shaping, but the contact area between emissions and cooling device is insufficient, reducing cooling capacity
Solution Approach 1:
The patent transitions from a simple linear cooling pipeline to a three-dimensional cooling structure with multiple flow channels arranged in different spatial dimensions. The cooling device includes a first flow channel extending in a first direction and a second flow channel extending in a second direction intersecting the first direction, creating a multi-dimensional cooling network that significantly increases the contact area between emissions and cooling surfaces while maintaining manufacturing feasibility.
Solution Approach 2:
The cooling device is segmented into multiple independent flow channels (first flow channel, second flow channel, and optionally third and fourth flow channels) rather than using a single continuous pipeline. This segmentation allows each channel to be optimally shaped and positioned to maximize cooling efficiency while keeping individual channel structures simple and easy to manufacture.
2Temperature
If the cooling device is added to the box body, then the cooling capacity is improved, but the device complexity increases
Solution Approach 1:
The cooling device is merged with the box body structure itself. The first and second flow channels are integrated into the walls of the box body, with the first flow channel extending along the length direction and the second flow channel extending along the width direction within the wall structure. This integration eliminates the need for separate external cooling components and reduces overall device complexity while maintaining enhanced cooling capacity.
Solution Approach 2:
The box body walls serve dual functions: providing structural containment for the battery cell and simultaneously housing the cooling flow channels. The walls are designed with embedded channels that allow cooling medium flow, making the structural component multi-functional and reducing the need for additional dedicated cooling structure 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 improves cooling capacity, reduces the risk of fires and explosions by effectively managing emissions, thereby enhancing battery safety.
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, thereby reducing the temperature of the emissions
Implementation Method 2
the cooling device includes a cooling structure being configured to increase a contact area between the emissions and the cooling device
Data Source
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AI summary
A box body (10), a battery (100), an electric apparatus and a manufacturing method of the battery (100), belonging to the field of energy storage devices. The box body (10) includes a cooling device (11) and a plurality of walls (12), where the plurality of walls (12) enclose an accommodating space (13) for accommodating a battery cell (30), an interior of at least one wall (12) is provided with a first flow channel (14), and the first flow channel (14) is used for discharging emissions generated by thermal runaway of the battery cell (30) out of the box body (10). The cooling device (11) is arranged in the first flow channel (14) and used for cooling the emissions flowing through the cooling device (11). The cooling device (11) includes a cooling structure (111) used for increasing a contact area between the emissions and the cooling device (11). Due to the arrangement of the cooling structure (111), the contact area between the emissions and the cooling device (11) is increased, so that the cooling device (11) can take away more heat of the emissions, and the cooling capacity of the cooling device (11) is improved. The cooling effect of the cooling device (11) becomes better, the possibility of firing and burning of the emissions is reduced, and the safety of the battery (100) is improved.