Liquid-nitrogen cooling method and device for automotive power battery pack

A power battery pack and liquid nitrogen cooling technology, which is applied in the direction of the power unit, the arrangement of the cooling combination of the power unit, and the secondary battery, etc., can solve the problems of battery safety that affects the cooling effect, difficult control of the cooling process, and power consumption of the power battery. , easy to control the cooling temperature, excellent cooling effect, and good cooling stability
CN102760920AActive Publication Date: 2012-10-31上海奇可网络科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海奇可网络科技有限公司
Publication Date
2012-10-31

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Abstract

The invention relates to a battery cooling method and a battery cooling device, in particular to liquid-nitrogen cooling method and device for an automotive power battery pack. The liquid-nitrogen cooling method for the automotive power battery pack includes directly releasing liquid nitrogen to the surface of the power battery pack and a casing of each battery cell to convert the liquid nitrogen into gas nitrogen, and cooling the surface of the power battery pack and the casing of each battery cell by absorbing a substantial amount of heat in process of converting the liquid nitrogen from liquid into gas. The liquid-nitrogen cooling device for the automotive power battery pack comprises a liquid nitrogen tank (1), a cooling container (8), a connecting pipeline (19), a cooling passage (20), a nitrogen exhaust port (9) and the like. The liquid nitrogen tank (1) is communicated with the cooling passage (20) arranged in the cooling container (8) through the connecting pipeline (19). The liquid-nitrogen cooling method and device for the automotive power battery pack are good in cooling effect, free of consumption of electric energy of the power battery pack, environment-friendly and energy-saving. The cooling method is simple and easy to implement. The cooling device is small in size, the structure is simple and stable, noise and vibration can be avoided, cooling stability is good, and safety is high.
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Description

technical field

[0001] The invention relates to a battery cooling method and device, in particular to a liquid nitrogen cooling method and device for a vehicle power battery pack. The invention belongs to the technical field of environmental protection and energy saving cooling process equipment and the like. Background technique

[0002] At a time when the world advocates low-carbon life, protects the environment, and seeks clean and renewable energy, all countries in the world are investing a lot of manpower and financial resources to develop electric vehicles. Using power battery packs as the power source for electric vehicles is the first choice for electric vehicles. However, the existing power battery pack will generate a lot of heat during the working process of charging and discharging. When the temperature of the battery itself increases, it not only directly affects the electric energy of the battery for charging and discharging, but also directly affects the serv...

Claims

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