Sealed Liquid Tank Cooling for Li-Ion Battery Gas Containment
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Solution Overview
Problem
Current Li-ion battery testing environments lack effective heat dissipation and gas containment, leading to hazardous combustion and potential explosions, especially in larger capacity batteries, which pose risks to personnel and the environment.
Innovation Solution
A sealed liquid tank system with continuous coolant flow, where a tank body with an accommodating space, liquid inlet, and upper outlet is used to submerge the Li-ion battery, providing rapid heat dissipation and containing gases within the system through a controlled overflow mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Li-ion battery testing is conducted in an open environment, then the battery can be tested without containment structures, but toxic gases and combustion byproducts can spread around causing harm to personnel and the environment
Solution Approach 1:
The patent introduces a liquid tank system as an intermediary containment structure between the battery and the external environment. This tank fills with liquid to submerge the battery, creating a barrier that prevents toxic gases and combustion byproducts from spreading while still allowing the battery to be tested. The liquid acts as a mediator that contains harmful substances within the tank.
2Reliability
If fire extinguishers with foam or dry powder are used to cover burning Li-ion batteries, then the combustion can be temporarily suppressed, but the combustion will continue until the lithium is exhausted and the treatment is complex
Solution Approach 1:
The patent converts the harmful effect of liquid submersion (potential to worsen electrical fires) into a beneficial effect by using the liquid as both a cooling medium and a containment barrier. The liquid tank system submerges the battery in liquid, which cools the battery and contains any combustion within the sealed tank, transforming what could be a harmful approach into an effective safety solution.
3Quantity of substance
If larger capacity Li-ion batteries are tested, then more energy can be tested, but the combustion produces more toxic gas and is more prone to explosion
Solution Approach 1:
The patent segments the testing environment into a contained liquid tank system separate from the external environment. This segmentation allows larger capacity batteries to be tested while the tank contains all harmful byproducts. The liquid tank acts as a separate containment zone that isolates the battery testing from the surrounding area, preventing toxic gas and explosion risks from affecting personnel and the environment.
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 system effectively dissipates heat from Li-ion batteries and prevents toxic gases from spreading, mitigating the risks of combustion and explosion, while ensuring safe handling of Li-ion battery testing.
Implementation Method 1
The flowing liquid coolant can dissipate heat from the li-ion battery
Implementation Method 2
continuous flow of liquid coolant... provide effective and rapid heat dissipation
Data Source
AI summary
A liquid tank system includes a tank body and a liquid coolant supplying device. The tank body has an accommodating space, a liquid inlet, and an upper outlet. The liquid inlet and the upper outlet communicate with the accommodating space. The accommodating space is sealed except for the liquid inlet and the upper outlet. The liquid coolant supplying device is connected to the liquid inlet so as to continuously provide a liquid coolant to the accommodating space through the liquid inlet. The liquid coolant in the accommodating space overflows out of the tank body through the upper outlet. A Li-ion battery cooling system includes a Li-ion battery and the above liquid tank system. The Li-ion battery is disposed in the accommodating space and submerged in the liquid coolant. The continuously flowing liquid coolant dissipates heat from the lithium battery.