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Electric vehicle cooling system, cooling method, and vehicle

A technology for electric vehicles and cooling systems, which is applied in the layout of the combination of cooling of electric vehicles and power units, power units, etc., can solve the problems of high cost and difficult system layout, and achieve the effect of saving energy and reducing the activation of heat dissipation air conditioners.

Active Publication Date: 2021-07-13
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the solution of three-way valve plus radiator is to equip the battery radiator separately for the battery cooling system, which makes the system layout difficult and the cost is high

Method used

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  • Electric vehicle cooling system, cooling method, and vehicle
  • Electric vehicle cooling system, cooling method, and vehicle
  • Electric vehicle cooling system, cooling method, and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] figure 1 It is a schematic structural diagram of an electric vehicle cooling system provided by Embodiment 1 of the present invention. This embodiment is applicable to the case of cooling a power battery in a pure electric vehicle, and the electric vehicle cooling system is installed in a pure electric vehicle.

[0027] In order to ensure that the temperature of the power battery does not exceed the limit, the general system needs to be equipped with a battery cooler (Chiller). The air conditioning system is used to cool the battery through the Chiller. The air conditioner consumes a lot of power to cool the power battery. However, when the ambient temperature is not too high and the heat generation of the power battery is small, the radiator can be used to dissipate heat for the power battery through the outside wind blowing through the radiator, which consumes less power and reduces the impact on the cruising range.

[0028] Such as figure 1 As shown, the electric ve...

Embodiment 2

[0058] On the basis of the above-mentioned embodiments, the embodiment of the present invention also provides a cooling method for an electric vehicle, Figure 7 It is a flow chart of the electric vehicle cooling method provided by the embodiment of the present invention; this embodiment is applicable to the situation of cooling the power battery in the pure electric vehicle, and the electric vehicle cooling method is implemented by the electric vehicle cooling system, and the Electric vehicle cooling system equipment in pure electric vehicles.

[0059] Such as Figure 7 As shown, the electric vehicle cooling method also provided by the embodiment of the present invention mainly includes the following steps:

[0060] S910. Obtain the temperature of the coolant in the cooling branch of the radiator through the temperature sensor;

[0061] S920. Use the control unit to determine whether the temperature of the coolant is within the first temperature range, and if so, the contro...

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Abstract

The invention discloses an electric vehicle cooling system, a cooling method and the vehicle. A control unit obtains the temperature of the cooling liquid in the cooling branch of the radiator through a temperature sensor; if the temperature of the cooling liquid is within the first temperature range, the control unit controls the cooling branch of the radiator. The second end of the circuit is respectively connected to the second end of the motor drive branch and the second end of the power battery, so that the radiator cooling branch can cool the motor drive branch and the power battery at the same time; if the coolant temperature is at the first Outside the temperature range, the control unit controls the second end of the cooling branch of the radiator to be connected to the second end of the motor driving branch, so that the cooling branch of the radiator is used for cooling the motor driving branch; and controls the second end of the cooling branch of the air conditioner. end and the second end of the power battery, so that the air-conditioning cooling branch can cool the power battery. Realize that the motor radiator can be used to dissipate heat for the battery without increasing the battery radiator, reduce the heat dissipation of the battery itself and start the air conditioner, and save energy.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of electric vehicle control, and in particular to an electric vehicle cooling system, a cooling method, and a vehicle. Background technique [0002] As the country pays more and more attention to and promotes new energy vehicles and new energy technologies, more and more OEMs begin to develop and produce new energy vehicles. As the power source of new energy vehicles, power batteries are the core components of the power system. Cooling the power battery so that the temperature of the power battery does not exceed the limit is of great significance for prolonging the service life of the power battery. [0003] At present, the cooling system of pure electric vehicles is generally realized by the scheme of three-way valve and radiator. This scheme uses the air conditioning cooling system to cool the power battery to form an independent battery cooling system, that is, the battery cooli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/26B60K11/04
CPCB60K11/04B60L58/26Y02T10/70
Inventor 张爱文彭小亮张福双
Owner CHINA FIRST AUTOMOBILE