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A control method of a vehicle battery cooling system

A cooling system and battery technology, which is applied in the combination of battery and power plant cooling layout, secondary batteries, etc., can solve the problems of low work efficiency, achieve the effects of reducing working time, ensuring cooling rate, and reducing battery energy consumption

Inactive Publication Date: 2016-09-28
SAIC MOTOR
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Problems solved by technology

[0004] However, the existing water-cooled battery cooling systems generally have low working efficiency

Method used

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  • A control method of a vehicle battery cooling system
  • A control method of a vehicle battery cooling system

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Embodiment Construction

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the structures in the drawings are only schematic rather than limiting, so that those skilled in the art can best understand the principles of the present invention, and they are not necessarily drawn to scale.

[0027] figure 1 An example vehicle battery cooling system suitable for the method provided by the present invention is shown. Such as figure 1 As shown on the right, the battery cooling system of an electric vehicle to which the present invention is applicable generally includes a battery 08, a coolant pump 09, a coolant pipeline 12, a battery cooler 04, a first expansion valve 06, and an electric compressor 01 , in which the electric compressor 01 is also used in the air-conditioning system for co...

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Abstract

The invention relates to a control method of a vehicle battery cooling system. The battery cooling system includes a battery cooler, a cooling liquid pump, a first expansion valve and an electric compressor shared with an air conditioning system for cabin refrigeration. The method comprises the following steps: when battery temperature is greater than a first temperature threshold, the first cooling mode is adopted, wherein the first cooling mode includes starting of the cooling liquid pump to cool the battery through the cooling liquid at the current temperature; and when the battery is in the first cooling mode and the battery temperature is greater than a second temperature threshold, a second cooling mode is further adopted, wherein the second cooling mode includes the implementation of a first process of the electric compressor to provide a refrigerant for the battery cooler, in order to reduce the temperature of the cooling liquid, and the second temperature threshold is determined according to whether the battery is in a charging state.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, and more particularly relates to a control method of a vehicle battery cooling system. Background technique [0002] With the government's emphasis on energy conservation and environmental protection, more and more automakers have begun to invest in the development and production of electric vehicles, including hybrid vehicles and pure electric vehicles. As part or all of the power source, the quality of the battery determines the cost of the electric vehicle on the one hand, and the driving range of the electric vehicle on the other hand. The key factor. [0003] The current vehicle power battery usually heats up continuously during use, which not only brings potential safety hazards, but also shortens the service life of the battery. At present, vehicle manufacturers generally arrange an independent cooling circuit to help the battery cool down. The water-cooled battery cooling sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/6567B60K11/00
CPCH01M2220/20Y02E60/10
Inventor 王天英牛凤仙潘乐燕宁秋宇曾昌明
Owner SAIC MOTOR
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