Vehicle cooling system and its control method
A technology of a cooling system and a control method, which is applied to the layout of the cooling combination of the power unit, vehicle components, power units, etc., and can solve problems such as energy waste and reduced service life of water pumps
Active Publication Date: 2016-01-20
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
Although the cooling system in the prior art can achieve the purpose of cooling the electric components, this long-term working method will not only greatly reduce the service life of the water pump, but also cause energy waste
Method used
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Embodiment Construction
[0037] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.
[0038] Generally, the motor on the electric vehicle requires the inlet water temperature to be less than 65°C, the water temperature required by the motor controller is equivalent to the working environment of the motor, and the inlet water temperature of the electric air compressor is required to be less than 80°C, so through the motor, motor controller, electric air compressor The maximum heat dissipation of the compressor can be designed for the flow rate of the water pump, and the quality of the coolant flowing through the unit time and the specific heat of the coolant can be found to know that the coolant flows through the motor, motor controller, and electric air compressor from the outlet of the water pump. According to this principle, a vehicle cooling system is designed, such as figure 1 As...
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The invention discloses a cooling system for an automobile and a control method thereof. The system comprises a water pump, a motor cooling water jacket, a motor controller cooling water jacket, an electric air compressor cooling water jacket and a radiator, wherein the water pump, the motor cooling water jacket, the motor controller cooling water jacket, the electric air compressor cooling water jacket and the radiator are sequentially connected to form a loop. The output end of the water pump is provided with a cooling hydraulic switch, the input end of the motor cooling water jacket is provided with an inlet coolant temperature sensor, and the output end of the motor cooling water jacket is provided with an outlet coolant temperature sensor. A fan is arranged near the radiator, the fan is electrically connected with a main control unit, a coolant pressure switch, the inlet coolant temperature sensor and the outlet coolant temperature sensor are electrically connected with the main control unit, and the main control unit is electrically connected with an air compressor pressure switch. By means of matching of the main control unit and the air compressor pressure switch, a motor working state and the coolant temperature sensor, starting and stopping control on the water pump and starting and stopping and multi-level rotation speed control on the fan are achieved, the service life of the water pump and the fan is prolonged, energy consumption is reduced, and driving safety is effectively guaranteed.
Description
technical field [0001] The invention relates to the cooling technology of automobile parts, in particular to a cooling system for a vehicle and a control method thereof. Background technique [0002] In pure electric vehicles or hybrid vehicles, some key components, such as drive motors, motor controllers, electric air compressors, etc., generate a lot of heat, and overheating will affect the service life of components, and even malfunction during use. Therefore, it is necessary to dissipate heat from these components. The existing technology is to introduce a water pump and a radiator into the cooling system. As long as the car is in working condition, the water pump is allowed to work, and the hot cooling water generated by the drive motor, motor controller, electric air compressor, etc. is brought into the radiator for heating. exchange. Such as: publication number is the Chinese patent application of CN101376337A, although the opening and closing of fan have been contr...
Claims
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IPC IPC(8): B60K11/02
Inventor 顾晔王华武郭磊段世忠
Owner DONGFENG MOTOR CORP HUBEI