Method and system of regulation and control of water pump of electric vehicle
A technology for electric vehicles and control systems, applied in pump control, machine/engine, liquid variable capacity machinery, etc., can solve the problems of limited water flow in cooling system pipelines, difficult to ensure motors, and increased power consumption of electric vehicles. , to meet the cooling demand, improve the cooling demand, and avoid the effect of high power consumption
Inactive Publication Date: 2013-12-18
SOUEAST
View PDF2 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The disadvantages of the existing technology are: 1. At present, when the electric vehicle is started, the VCU sends a PWM control signal with a fixed duty ratio to the electronic water pump. During the operation of the vehicle, the electronic water pump has been running at a fixed speed, which cannot be detected according to the actual motor speed. The cooling water temperature is controlled by speed, so that the water flow in the cooling system pipeline is limited, so that the water flow cannot be effectively adjusted according to the actual cooling demand of the motor system, and it is difficult to ensure that the motor works at the optimal temperature; 2. The electronic water pump has always been Fixed high speed operation, high power consumption for a long time, increasing the consumption of electric vehicle power supply
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] This embodiment provides a water pump control system for electric vehicles, such as figure 1 As shown, it includes vehicle controller 1, motor controller 2, electronic water pump 3, water tank 4 and motor 5;
[0040] Among them, the water tank 4, the electronic water pump 3, the motor controller 2, and the motor 5 are sequentially connected with water pipes to form a coolant circulation loop; the motor 5 is connected to the motor controller 2 with electrical signals, and the vehicle controller 1 is connected to the motor control The device 2 and the electronic water pump 3 are electrically connected; the water tank 4 is used to store the cooling liquid, and the cooling liquid is water or an aqueous solution. The electronic water pump 3 is used to receive the control signal from the vehicle controller 1 to regulate its own speed, and pump the coolant from the water tank 4 into the coolant circulation circuit; the motor controller 2 is used to detect the water temperature...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method and a system of regulation and control of a water pump of an electric vehicle. The system comprises a water tank, an electronic water pump, a motor controller and a motor, which are connected by a water pipe in sequence so as to form a cooling liquid circulating loop; the motor is connected to the motor controller through an electric signal, a vehicle controller is connected to the motor controller and the electronic water pump through the electric signal; the water tank is used for storing cooling liquid; the electronic water pump is used for receiving a control signal of the vehicle controller so as to regulate the rotating speed, and pumping the cooling liquid of the water tank into the cooling liquid circulating loop; the motor controller is used for detecting water temperature of the motor and feeding a temperature signal back to the vehicle controller, and the motor is used for outputting the vehicle power; the vehicle controller is used for receiving the temperature signal fed back by the motor controller and outputting the control signal to the electronic water pump through logical judgment. According to the invention, power consumption of the electronic water pump in a working process is reduced; and water discharge of the cooling system is effectively regulated to better meet actual cooling requirements of the motor system.
Description
technical field [0001] The invention relates to the field of electric vehicles, in particular to a method and system for controlling a water pump of an electric vehicle. Background technique [0002] VCU: Vchicle control unit vehicle controller is the vehicle control unit; [0003] MCU: The Chinese name of Micro Control Unit is a micro control unit. In the present invention, MCU is used as a motor controller. [0004] PWM: Pulse Width Modulation (PWM), the abbreviation of "Pulse Width Modulation" in English, referred to as Pulse Width Modulation, is a very effective technology that uses the digital output of a microprocessor to control analog circuits, and is widely used in from In many fields from measurement and communication to power control and conversion. [0005] At present, for pure electric vehicles using a water-cooled motor system, when the vehicle is started, the VCU sends a PWM control signal with a fixed duty cycle to control the electronic water pump to run a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06
Inventor 刘陈石谢俊淋陈子晃
Owner SOUEAST