CN-122014586-A - Water pump duty ratio control method, device, equipment and medium

CN122014586ACN 122014586 ACN122014586 ACN 122014586ACN-122014586-A

Abstract

The invention discloses a method, a device, equipment and a medium for controlling the duty ratio of a water pump. Belongs to the technical field of electric water pump control of new energy automobiles. The method comprises the steps of obtaining cooling fluid flow data of a water outlet of a water pump, wherein the flow data comprise at least two different control duty ratios sent to a water pump controller, obtaining cooling fluid flow values corresponding to each control duty ratio, comparing the at least two cooling fluid flow values in a numerical value mode to determine a numerical relation among the flow values, determining a target parameter value corresponding to a reverse calibration amount of water pump control according to the numerical relation, and generating a water pump control signal based on the target parameter value. The technical effect of improving the stability of water pump control is achieved.

Inventors

CAO CHUNYU
XU MAN
KE SHUGUO
ZHU ZHILIN
LI HAIBO

Assignees

东风汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260316

Claims (10)

1. A method of controlling a duty cycle of a water pump, comprising: acquiring cooling fluid flow data of a water outlet of a water pump, wherein the flow data comprises cooling fluid flow values corresponding to each control duty ratio, wherein the cooling fluid flow values are obtained by sending at least two different control duty ratios to a water pump controller; comparing the values of at least two coolant flow values, and determining the numerical relation among the flow values; And determining a target parameter value corresponding to the inverse calibration quantity of the water pump control according to the numerical relation, and generating a water pump control signal based on the target parameter value.
2. The method of claim 1, wherein the obtaining coolant flow data for the water pump outlet comprises: sending a first control duty ratio to the water pump controller, and acquiring and recording a corresponding first cooling liquid flow value through a flow sensor; sending a second control duty ratio to a water pump controller, and acquiring and recording a corresponding second coolant flow value through a flow sensor; and taking the first and second coolant flow values as the coolant flow data.
3. The method of claim 2, wherein the first control duty cycle and the second control duty cycle are different sized control duty cycles, and wherein a value of the first control duty cycle is less than a value of the second control duty cycle.
4. The method of claim 2, wherein said comparing the flow values of at least two of said coolants to determine a numerical relationship between the flow values comprises: comparing the values of at least two coolant flow values, and if the first coolant flow value is larger than the second coolant flow value, determining the numerical relationship between the flow values as a first numerical relationship; And if the first cooling liquid flow value is smaller than the second cooling liquid flow value, determining the numerical relation among the flow values as a second numerical relation.
5. The method according to claim 4, wherein determining the target parameter value corresponding to the inverted calibration of the water pump control according to the numerical relationship comprises: if the numerical relation is the first numerical relation, setting the target parameter value of the inverse standard quantity as a first parameter; And if the numerical relation is the second numerical relation, setting the target parameter value of the inverse standard quantity as a second parameter.
6. The method of claim 5, wherein the first parameter has a value of 1 and the second parameter has a value of 0.
7. The method of claim 5, wherein generating a water pump control signal based on the target parameter value comprises: If the target parameter value is the first parameter, generating the water pump control signal after performing inverse processing on the control duty ratio sent to the water pump controller; and if the target parameter value is the second parameter, directly generating the water pump control signal without executing the inverse processing on the control duty ratio sent to the water pump controller.
8. A water pump duty cycle control device, comprising: the flow obtaining module is used for obtaining the flow data of the cooling fluid at the water outlet of the water pump, wherein the flow data comprises cooling fluid flow values corresponding to each control duty ratio obtained by sending at least two different control duty ratios to the water pump controller; The numerical relation determining module is used for carrying out numerical comparison on at least two flow values of the cooling fluid and determining the numerical relation among the flow values; And the control signal generation module is used for determining a target parameter value corresponding to the inverse calibration quantity of the water pump control according to the numerical relation and generating a water pump control signal based on the target parameter value.
9. An electronic device, the electronic device comprising: At least one processor; and a memory communicatively coupled to the at least one processor; Wherein the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the water pump duty cycle control method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the water pump duty cycle control method of any one of claims 1-7 when executed.

Description

Water pump duty ratio control method, device, equipment and medium Technical Field The invention relates to the technical field of control of electric water pumps of new energy automobiles, in particular to a method, a device, equipment and a medium for controlling the duty ratio of a water pump. Background Along with the rapid development of new energy automobiles, the electric water pump is widely applied to the new energy automobiles. At present, the effectiveness of a control duty ratio of a pin of a controller in an electric water pump and the water pump is not uniform, so that the situation that a control signal value is opposite to the actual rotation speed of the water pump frequently occurs in actual development. The duty ratio of the water pump control is only of numerical significance, whether the duty ratio of the water pump and the pins of the controller is high-efficient or low-efficient is judged manually according to the specification of the electric water pump, and then the calibration parameters of the control signal for reversing the standard quantity are set manually. The method not only needs to input a large amount of manpower to carry out manual judgment and parameter setting, but also is easy to cause judgment errors in manual operation, so that the control signal value is opposite to the actual rotation speed of the water pump, and meanwhile, the parameters are required to be set manually again for different vehicle types of projects of the same thermal management scheme or different water pumps of the same vehicle type, so that software is difficult to keep consistent, development cost and manpower input are greatly increased, and development efficiency and fault tolerance rate of water pump control are reduced. Disclosure of Invention The invention provides a method, a device, equipment and a medium for controlling the duty ratio of a water pump, so as to realize automatic judgment and adaptive control of the effectiveness of the control duty ratio of the water pump. According to an aspect of the present invention, there is provided a water pump duty ratio control method including: acquiring cooling fluid flow data of a water outlet of a water pump, wherein the flow data comprises cooling fluid flow values corresponding to each control duty ratio, wherein the cooling fluid flow values are obtained by sending at least two different control duty ratios to a water pump controller; comparing the values of at least two coolant flow values, and determining the numerical relation among the flow values; And determining a target parameter value corresponding to the inverse calibration quantity of the water pump control according to the numerical relation, and generating a water pump control signal based on the target parameter value. According to another aspect of the present invention, there is provided a water pump duty control device including: the flow obtaining module is used for obtaining the flow data of the cooling fluid at the water outlet of the water pump, wherein the flow data comprises cooling fluid flow values corresponding to each control duty ratio obtained by sending at least two different control duty ratios to the water pump controller; The numerical relation determining module is used for carrying out numerical comparison on at least two flow values of the cooling fluid and determining the numerical relation among the flow values; And the control signal generation module is used for determining a target parameter value corresponding to the inverse calibration quantity of the water pump control according to the numerical relation and generating a water pump control signal based on the target parameter value. According to another aspect of the present invention, there is provided an electronic apparatus including: At least one processor; And a memory communicatively coupled to the at least one processor; The memory stores a computer program executable by the at least one processor, so that the at least one processor can execute the water pump duty ratio control method according to any one of the embodiments of the present invention. According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute a water pump duty cycle control method according to any one of the embodiments of the present invention. According to the technical scheme, coolant flow data of a water outlet of a water pump are obtained, wherein the flow data comprise at least two different control duty ratios, obtained coolant flow values corresponding to each control duty ratio, are sent to a water pump controller, numerical comparison is carried out on the at least two coolant flow values, numerical relations among the flow values are determined, target parameter values corresponding to the inverse calibration quantity of water pump control are determined according to the numerical relations, and water