Battery cooling system and battery cooling control method

A cooling system and cooling control technology, applied in battery/fuel cell control devices, secondary batteries, electric vehicle charging technology, etc., can solve low cooling efficiency, leakage of coolant in the battery pack, low safety of battery pack operation, etc. problems, achieve high safety, uniform and efficient cooling effect, and improve the effect of cooling effect
CN112467246AInactive Publication Date: 2021-03-09CHINA FIRST AUTOMOBILE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA FIRST AUTOMOBILE
Publication Date
2021-03-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a battery cooling system and a battery cooling control method. The battery cooling system is used for cooling a battery, and comprises a refrigeration loop, a cooling piece, athrottle valve, an observation piece, an HVAC assembly, a thermostatic expansion valve with a cut-off function, and a controller. A refrigerant is introduced into the refrigeration loop. A cooling piece is arranged on the battery. The throttle valve is arranged between the first outlet and the second inlet and used for adjusting the flow of the refrigerant entering the cooling piece. The observation piece is arranged between the throttle valve and the second inlet and used for observing the state of the refrigerant flowing out of the throttle valve. The HVAC assembly is used for cooling the passenger compartment. And the thermostatic expansion valve is arranged between the first outlet and the third inlet, and is configured to cut off the flow channel between the first outlet and the thirdinlet when the temperature of the passenger compartment is lower than a preset value. The battery cooling system can improve the cooling efficiency of the battery and has high safety.
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Description

technical field

[0001] The invention relates to the technical field of battery cooling, in particular to a battery cooling system and a battery cooling control method. Background technique

[0002] When electric vehicles and hybrid vehicles are running, the power battery will release a lot of heat. In order to maintain the power battery within a reasonable temperature range, the power battery needs to be cooled. In the prior art, cooling liquid is usually passed into the liquid cooling plate in the battery pack. The flowing cooling liquid can cool down the battery, and the heated cooling liquid dissipates heat through the intermediate heat exchanger, and its cooling efficiency is higher At the same time, there is a risk of leakage of the coolant in the battery pack, which makes the operation safety of the battery pack lower. Contents of the invention

[0003] An object of the present invention is to provide a battery cooling system, which can improve the cooling efficienc...

Claims

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