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Control method for vehicular battery cooling system

A technology of cooling system and control method, applied in battery temperature control, secondary battery, heating/cooling equipment, etc., can solve problems such as low work efficiency, and achieve the effect of reducing working time, ensuring cooling rate and prolonging service life

Active Publication Date: 2014-10-22
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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  • Control method for vehicular battery cooling system
  • Control method for vehicular battery cooling system

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Embodiment Construction

[0018] 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.

[0019] 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 power battery 08, a coolant pump 07, a battery cooler 04, a first expansion valve or called a battery end expansion valve 06, and an electric compressor machine 01, wherein the electric compressor 01 is also used in the a...

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Abstract

The invention relates to a control method for a vehicular battery cooling system. The vehicular battery cooling system comprises a battery cooler, a coolant pump, a first expansion valve and an electric compressor. The electric compressor is shared by the vehicular battery cooling system and a cabin refrigerating system, and the cabin refrigerating system comprises a second expansion valve. The method includes: simultaneously controlling the vehicular battery cooling system and the cabin refrigerating system according to cabin cooling demand signals and battery cooling demand signals; when the battery temperature is larger than a first battery temperature threshold TBSH or the coolant temperature is larger than or equal to a first coolant temperature threshold TBCH, generating a battery cooling demand signal which indicates cooling demand of a battery; when the battery temperature is smaller than a second battery temperature threshold TBSL or the coolant temperature is smaller than or equal to a second coolant temperature threshold TBCL, generating a battery cooling demand signal which indicates no cooling demand of the battery.

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] Now 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 system to help cool down the battery. The water-cooled battery cooling system is usually associated with an air-conditioning refrigeration system. An air-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00H01M10/613H01M10/625H01M10/63H01M10/633
CPCY02E60/10
Inventor 张斌余小松
Owner SAIC MOTOR
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