CN116591815A

CN116591815A - Automobile water pump control method and device, storage medium and electronic equipment

Info

Publication number: CN116591815A
Application number: CN202310618604.1A
Authority: CN
Inventors: 封洲霞
Original assignee: Hozon New Energy Automobile Co Ltd
Current assignee: Hozon New Energy Automobile Co Ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-08-15

Abstract

The application discloses an automobile water pump control method and device, a storage medium and electronic equipment, and relates to the technical field of automobiles. The method is applied to an automobile, wherein a first corresponding relation between a water pump failure reason and a water pump working mode is stored in the automobile, and the method comprises the following steps: determining a failure reason of the water pump; and determining a water pump working mode corresponding to the fault reason according to the first corresponding relation. The first corresponding relation between the failure cause of the water pump and the working mode of the water pump is stored in the automobile, the first corresponding relation is obtained through experimental verification in advance, different working strategies (namely working modes) of the water pump are formulated for different failure causes according to the first corresponding relation, the working mode of the water pump is controlled to cool the temperature of a controlled object in advance according to the first corresponding relation, the phenomenon of insufficient power is reduced, and the safety problem of the automobile is avoided.

Description

Automobile water pump control method and device, storage medium and electronic equipment

Technical Field

The present application relates to the field of automotive technologies, and in particular, to a method and apparatus for controlling an automotive water pump, a storage medium, and an electronic device.

Background

In electric vehicles, a cooling circuit for controlling the temperature of components such as a power motor and a power battery is generally provided, and an automobile water pump for driving a coolant in the cooling circuit is provided in the cooling circuit. Namely, the power motor, the power battery and the like are cooled by controlling the rotating speed of the automobile water pump to control the flow rate of the cooling liquid in the cooling loop.

When the automobile water pump fails, the working mode of the automobile water pump needs to be adjusted in time, so that the service life of the automobile water pump is prevented from being influenced, and the normal work of a power motor, a power battery and the like is prevented from being influenced. At present, when the water pump fails, the water pump operates at a uniform speed and a low speed. However, the prior art cannot control the rotation speed and the working time of the water pump in a targeted manner according to the specific failure cause of the water pump, so that the service life of the water pump can be reduced. Therefore, how to control the water pump according to the failure cause of the water pump is a problem to be solved.

Disclosure of Invention

In view of the above problems, the application provides an automobile water pump control method, an automobile water pump control device, a storage medium and electronic equipment, which solve the problem of how to control a water pump according to the failure reason of the water pump.

In order to solve the technical problems, the application provides the following scheme:

in a first aspect, the present application provides a method for controlling a water pump of an automobile, where a first correspondence between a cause of a water pump failure and a working mode of the water pump is stored in the automobile, the method comprising: determining fault reasons of the water pump, wherein the fault reasons comprise a temperature sensor fault, a overtime fault and a physical fault; and determining a water pump working mode corresponding to the fault reason according to the first corresponding relation.

The first corresponding relation between the failure cause of the water pump and the working mode of the water pump is stored in the automobile, the first corresponding relation is obtained through experimental verification in advance, different working strategies (namely working modes) of the water pump are formulated for different failure causes according to the first corresponding relation, the working mode of the water pump is controlled to cool the temperature of a controlled object in advance according to the first corresponding relation, the phenomenon of insufficient power is reduced, and the safety problem of the automobile is avoided.

With reference to the first aspect, in one possible implementation manner, when the water pump temperature sensor is not failed and the water pump is in an operating state, determining whether the operating time of the water pump exceeds a threshold; and when the working time of the water pump exceeds a threshold value, indicating that the water pump is overtime fault.

With reference to the first aspect, in another possible implementation manner, when the water pump is in a time-out fault and the difference value between the temperature of the water pump and the temperature of the controlled object is smaller than the first temperature value, the water pump is controlled to stop running for a first time, so that the water pump is in a non-working state; or when the water pump is overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is larger than the first temperature value, determining the working mode of the water pump corresponding to the overtime fault as a first working mode according to the first corresponding relation.

When the water pump has overtime faults, the water pump should be stopped and enter fault diagnosis to check the overtime reasons of the water pump, when the water pump is stopped, safety factors need to be considered, and when the temperature difference value between the water pump temperature and the temperature of the controlled object is larger than a first temperature value, the water pump needs to continue overtime work so as to ensure the safety of an automobile.

With reference to the first aspect, in another possible implementation manner, a second correspondence between a temperature difference between a temperature of the water pump and a controlled object and a working mode of the water pump is stored in the automobile, and the method further includes: judging whether the water pump has physical faults or not in the first time when the water pump is in a non-working state; and when the water pump does not have physical faults, determining the working mode of the water pump corresponding to the temperature difference value of the water pump and the controlled object according to the second corresponding relation.

With reference to the first aspect, in another possible implementation manner, the method further includes: and when the overtime fault is caused by the physical fault, determining a water pump working mode corresponding to the physical fault according to the first corresponding relation.

When the overtime fault is caused by the physical fault, the problem of overtime of the working time of the water pump can be solved by solving the corresponding physical fault.

With reference to the first aspect, in another possible implementation manner, determining, according to the first correspondence, a water pump working mode corresponding to a failure cause, further includes: when the water pump temperature sensor fails, determining that the water pump working mode corresponding to the water pump temperature sensor failure is a second working mode according to the first corresponding relation.

Because the failure of the water pump temperature sensor influences the temperature judgment of the cooling liquid in the cooling loop, the temperature acquired after the failure of the water pump temperature sensor is invalid, the working mode of the water pump cannot be accurately adjusted by the invalid temperature, and further the controlled object cannot be successfully cooled. For the above reasons, it is first determined whether the temperature sensor of the automobile water pump is malfunctioning.

With reference to the first aspect, in another possible implementation manner, the operation mode includes a rotation speed of the water pump and an operation time of the water pump.

Factors influencing the working efficiency of the water pump include the rotating speed and the working time, and when the difference between the temperature of the water pump and the temperature of the controlled object is small, the rotating speed of the water pump should be reduced; conversely, when the difference between the temperature of the water pump and the temperature of the controlled object is large, the rotation speed of the water pump should be increased. On the other hand, the long continuous high-speed working time of the water pump can also affect the working efficiency of the water pump and the service life of the water pump.

In a second aspect, the present application provides an automotive water pump control device, in which a first correspondence between a cause of a water pump failure and a water pump operation mode is stored, the automotive water pump control device comprising:

the fault diagnosis module is used for determining fault reasons of the water pump, wherein the fault reasons comprise temperature sensor faults, overtime faults and physical faults.

And the water pump adjusting module is used for determining a water pump working mode corresponding to the fault reason according to the first corresponding relation.

With reference to the second aspect, in one possible implementation manner, the fault diagnosis module is specifically configured to determine, when the water pump temperature sensor is not faulty and the water pump is in an operating state, whether an operating time of the water pump exceeds a threshold value; and when the working time of the water pump exceeds a threshold value, indicating that the water pump is overtime fault.

With reference to the second aspect, in another possible implementation manner, the water pump adjustment module is specifically configured to control the water pump to suspend operation for a first time when the water pump is in a timeout failure and a difference between a temperature of the water pump and a temperature of a controlled object is smaller than a first temperature value, so that the water pump is in a non-working state; or when the water pump is overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is larger than the first temperature value, determining the working mode of the water pump corresponding to the overtime fault as a first working mode according to the first corresponding relation.

In combination with the second aspect, in another possible implementation manner, a second corresponding relation between a temperature difference value of the water pump and the controlled object and a working mode of the water pump is stored in the automobile, and the water pump adjusting module is specifically configured to determine whether a physical fault exists in the water pump in a first time when the water pump is in a non-working state; and when the water pump does not have physical faults, determining the working mode of the water pump corresponding to the temperature difference value of the water pump and the controlled object according to the second corresponding relation.

With reference to the second aspect, in another possible implementation manner, the water pump adjustment module is specifically configured to determine, when the overtime fault is caused by the physical fault, a water pump working mode corresponding to the physical fault according to the first correspondence.

With reference to the second aspect, in another possible implementation manner, the water pump adjustment module is specifically configured to determine, when the water pump temperature sensor fails, that a water pump operation mode corresponding to the water pump temperature sensor failure is a second operation mode according to the first correspondence.

With reference to the second aspect, in another possible implementation manner, the operation mode includes a rotation speed of the water pump and an operation time of the water pump.

In order to achieve the above object, according to a third aspect of the present application, there is provided a storage medium including a stored program, wherein the device in which the storage medium is controlled to execute the above-described automobile water pump control method of the first aspect when the program runs.

To achieve the above object, according to a fourth aspect of the present application, there is provided an electronic device including at least one processor, and at least one memory, bus connected to the processor; the processor and the memory complete communication with each other through a bus; the processor is configured to call the program instructions in the memory to execute the method for controlling the water pump of the automobile according to the first aspect.

By means of the technical scheme, the technical scheme provided by the application has at least the following advantages:

according to the automobile water pump control method, the device, the storage medium and the electronic equipment, the first corresponding relation between the water pump failure cause and the water pump working mode is stored in the automobile, the first corresponding relation is obtained through experimental verification in advance, different water pump working strategies (namely working modes) are formulated according to different failure causes, and therefore the water pump working mode is controlled according to the first corresponding relation, the controlled object temperature can be cooled in advance, the phenomenon of insufficient power is reduced, and the safety problem of the automobile is avoided.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 shows a schematic diagram of an electronic device according to an embodiment of the present application;

fig. 2 shows a schematic flow chart of an automobile water pump control method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a specific flow of an automobile water pump control method according to an embodiment of the present application;

fig. 4 shows a schematic structural diagram of an automobile water pump control device according to an embodiment of the present application.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

In the embodiment of the application, the words of the terms of the first word, the second word and the like do not have a logical or time sequence dependency relationship, and the number and the execution sequence are not limited. It will be further understood that, although the following description uses the terms first, second, etc. to describe various elements, these elements should not be limited by the terms. These terms are only used to distinguish one element from another element.

The meaning of the term "at least one" in embodiments of the present application means one or more, and the meaning of the term "plurality" in embodiments of the present application means two or more.

It should also be understood that the term "if" may be interpreted as "when … …" ("white" or "upon") or "in response to a determination" or "in response to detection". Similarly, the phrase "if a [ stated condition or event ] is detected" may be interpreted as "when a [ stated condition or event ] is determined" or "in response to a determination" or "when a [ stated condition or event ] is detected" or "in response to a detection of a [ stated condition or event ] depending on the context.

To facilitate an understanding of the aspects of the present application, a brief description of the relevant concepts is first presented below.

A water pump is a machine that delivers or pressurizes a liquid. It transmits mechanical energy or other external energy of prime mover to liquid to increase energy of liquid, and is mainly used for conveying liquid including water, oil, acid-alkali liquor, emulsion, suspension emulsion and liquid metal.

The foregoing is a description of technical terms related to the embodiments of the present application, and is not repeated herein.

As described in the background art, when the automobile water pump fails, the working mode of the automobile water pump needs to be adjusted in time, so that the service life of the automobile water pump is prevented from being influenced, and the normal work of the power motor, the power battery and the like is prevented from being influenced. At present, when the water pump fails, the water pump operates at a uniform speed and a low speed. However, the prior art cannot control the rotation speed and the working time of the water pump in a targeted manner according to the specific failure cause of the water pump, so that the service life of the water pump can be reduced. Therefore, how to control the water pump according to the failure cause of the water pump is a problem to be solved.

In view of this, an embodiment of the present application provides a method for controlling a water pump of an automobile, where a first correspondence between a cause of a water pump failure and a water pump working mode is stored in the automobile, the method specifically includes: determining a failure reason of the water pump; and determining a water pump working mode corresponding to the fault reason according to the first corresponding relation. The first corresponding relation between the failure cause of the water pump and the working mode of the water pump is stored in the automobile, the first corresponding relation is obtained through experimental verification in advance, different working strategies (namely working modes) of the water pump are formulated for different failure causes according to the first corresponding relation, the working mode of the water pump is controlled to cool the temperature of a controlled object in advance according to the first corresponding relation, the phenomenon of insufficient power is reduced, and the safety problem of the automobile is avoided.

The embodiment of the application also provides an automobile water pump control device which can be used for executing the automobile water pump control method. Alternatively, the automobile water pump control device may be an electronic device with data processing capability, or a functional module in the electronic device, which is not limited.

For example, the electronic device may be a server, which may be a single server, or may be a server cluster composed of a plurality of servers. As another example, the electronic device may be a terminal device such as a cell phone, tablet, desktop, laptop, handheld computer, notebook, ultra-mobile Personal Computer (UMPC), netbook, cell phone, personal digital assistant (Personal Digital Assistant, PDA), augmented Reality (Augmented Reality, AR), virtual Reality (VR) device, etc. For another example, the electronic device may also be a video recording device, a video monitoring device, or the like. The present application is not particularly limited to the specific form of the electronic apparatus.

Taking an electronic device as an example, as shown in fig. 1, fig. 1 shows a hardware structure of an electronic device 100 according to the present application.

As shown in fig. 1, the electronic device 100 includes a processor 110, a communication line 120, and a communication interface 130.

Optionally, the electronic device 100 may also include a memory 140. The processor 110, the memory 140, and the communication interface 130 may be connected by a communication line 120.

The processor 110 may be a central processing unit (Central Processing Unit, CPU), a general purpose processor network processor (Network Processor, NP), a digital signal processor (Digital Signal Processing, DSP), a microprocessor, a microcontroller, a programmable logic device (Programmable Logic Device, PLD), or any combination thereof. The processor 110 may also be any other apparatus having a processing function, such as a circuit, a device, or a software module, without limitation.

In one example, processor 110 may include one or more CPUs, such as CPU0 and CPU1 in fig. 1.

As an alternative implementation, electronic device 100 includes multiple processors, e.g., processor 170 may be included in addition to processor 110. Communication line 120 is used to communicate information between various components included in electronic device 100.

A communication interface 130 for communicating with other devices or other communication networks. The other communication network may be an ethernet, a radio access network (Radio Access Network, RAN), a wireless local area network (Wireless Local Area Networks, WLAN), etc. The communication interface 130 may be a module, a circuit, a transceiver, or any device capable of enabling communication.

Memory 140 for storing instructions. Wherein the instructions may be computer programs.

The Memory 140 may be, but is not limited to, a Read-Only Memory (ROM) or other type of static storage device capable of storing static information and/or instructions, an access Memory (Random Access Memory, RAM) or other type of dynamic storage device capable of storing information and/or instructions, an electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), a compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc storage, an optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, etc.

It should be noted that the memory 140 may exist separately from the processor 110 or may be integrated with the processor 110. Memory 140 may be used to store instructions or program code or some data or the like. The memory 140 may be located in the electronic device 100 or may be located outside the electronic device 100, without limitation.

The processor 110 is configured to execute instructions stored in the memory 140 to implement a communication method according to the following embodiments of the present application. For example, when the electronic device 100 is a terminal or a chip in a terminal, the processor 110 may execute instructions stored in the memory 140 to implement steps performed by a transmitting end in the following embodiments of the present application.

As an alternative implementation, the electronic device 100 further comprises an output device 150 and an input device 160. The output device 150 may be a device capable of outputting data of the electronic apparatus 100 to a user, such as a display screen, a speaker, or the like. The input device 160 is a device capable of inputting data to the electronic apparatus 100, such as a keyboard, a mouse, a microphone, or a joystick.

It should be noted that the structure shown in fig. 1 does not constitute a limitation of the computing device, and the computing device may include more or less components than those shown in fig. 1, or may combine some components, or may be arranged in different components.

The automobile water pump control device and the application scenario described in the embodiments of the present application are for more clearly describing the technical solution provided in the embodiments of the present application, and do not constitute a limitation to the technical solution provided in the embodiments of the present application, and as a person of ordinary skill in the art can know, with the evolution of the automobile water pump control device and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

Next, a method of controlling the water pump of the automobile will be described in detail with reference to the accompanying drawings. Fig. 2 is a schematic flow chart of a control method of an automobile water pump. Fig. 3 is a schematic flow chart of a control method of an automobile water pump according to the present application. The method is applied to the automobile water pump control device with the hardware structure shown in fig. 1, and specifically comprises the following steps:

step 210, the automobile water pump control device determines the failure reason of the water pump.

In electric vehicles, a cooling circuit for controlling the temperature of components such as a power motor and a power battery is generally provided, and an automobile water pump for driving a coolant in the cooling circuit is provided in the cooling circuit. I.e., by controlling the speed of the vehicle water pump to achieve control of the coolant flow rate in the cooling circuit, to cool the battery management system, the battery, the drive motor, the motor controller, and a direct current-to-direct current converter (DC-DC), etc.

When the automobile water pump fails, the working mode of the automobile water pump needs to be adjusted in time, so that the service life of the automobile water pump is prevented from being influenced, and the normal work of controlled objects (a battery management system, a battery, a driving motor, a motor controller, a direct current-direct current converter and the like) is also prevented from being influenced.

The reasons for the failure of the automobile water pump can be failure of a water pump temperature sensor, overtime failure of the water pump, physical failure of the water pump and the like, and the physical failure of the water pump can be overtemperature, overpressure, blocking and the like of the water pump.

Because the failure of the water pump temperature sensor influences the temperature judgment of the cooling liquid in the cooling loop, the temperature acquired after the failure of the water pump temperature sensor is invalid, the working mode of the water pump cannot be accurately adjusted by the invalid temperature, and further the controlled object cannot be successfully cooled. For the above reasons, in the embodiment of the present application, it is first determined whether the temperature sensor of the automobile water pump is faulty, and when the temperature sensor of the automobile water pump is not faulty, it is further determined whether the water pump is in an operating state.

When the water pump is in an operating state, it is also necessary to determine whether the operating time of the water pump exceeds a threshold value. And when the working time of the water pump exceeds a threshold value, considering that the automobile water pump has overtime faults.

When the water pump is in a non-working state, whether the water pump has physical faults or not is judged, and influences caused by different physical faults are different, so that the fault degree of different physical faults also needs to be determined, and the automobile water pump control device determines the working mode of the water pump according to the fault degree of the water pump.

In addition, when the overtime fault exists in the automobile water pump, whether the physical fault exists in the water pump or not needs to be further judged, and whether the overtime fault of the water pump is caused by the physical fault of the water pump or not is determined, so that the automobile water pump control device accurately adjusts the working mode of the water pump, and further the efficiency of the automobile water pump control system is improved.

Step 220, the automobile water pump control device determines a water pump working mode corresponding to the failure reason according to the first corresponding relation.

In the embodiment of the application, a first corresponding relation between a water pump failure reason and a water pump working mode is stored in the automobile. The first correspondence is shown in table 1.

TABLE 1 first correspondence

Cause of failure	Rotational speed/rotation	Operating time/second	Downtime/second
				Temperature sensor failure	N1	a	b
Time-out failure	N2		0
				Over-temperature fault	N3	e	f
Blocking faults	0	0

In one embodiment, when the temperature sensor of the automobile water pump fails, the working mode of the water pump is determined to be a second working mode according to the first corresponding relation, the second working mode means that the rotating speed of the water pump is N1, the water pump is required to stop for b seconds after working for a seconds, and then the water pump circularly works according to the second working mode. Because the working mode of the water pump in the first corresponding relation is obtained through experiments in advance, when the water pump temperature sensor fails, the water pump works in the second working mode, and the controlled object can be cooled rapidly.

Further, when the water pump temperature sensor is not in failure and the water pump is in a working state, whether the working time of the water pump exceeds a threshold value is judged, and when the working time of the water pump exceeds the threshold value, the water pump is indicated to be in overtime failure. At this time, the temperature sensor collects the water pump temperature and the controlled object temperature, and calculates the difference between the water pump temperature and the controlled object temperature.

When the difference between the temperature of the water pump and the temperature of the controlled object is larger than a first temperature value (T1), the temperature of the controlled object is high, and the water pump is required to work continuously at the moment for reducing the temperature of the controlled object in view of safety. In the embodiment of the application, the working mode of the water pump when the overtime fault exists is determined to be the first working mode according to the first corresponding relation. The second working mode means that the water pump continuously works according to the rotation speed of N2. It should be noted that, when the temperature of some controlled objects in the automobile is too high, a safety risk may occur. For example, when the temperature of the motor of the automobile is too high, the motor can reduce power, so that the whole automobile is insufficient in power and even prone to nest, and traffic accidents are caused. Therefore, when the water pump has overtime faults and the difference value between the temperature of the water pump and the temperature of the controlled object is larger than the first temperature value, the service life of the water pump is not considered, the water pump is controlled to continuously work, and potential safety hazards caused by overhigh temperature of the controlled object are avoided.

When the difference between the water pump temperature and the controlled object temperature is smaller than the first temperature value, the temperature of the controlled object is not very high, the difference between the water pump temperature and the controlled object temperature can be ignored temporarily, and the controlled object can be cooled without the water pump. In this case, the water pump is controlled to be suspended for a certain period of time. And diagnosing the fault of the water pump in the period of time to determine the reason of overtime of the water pump, namely further determining whether the water pump has physical fault.

Further, a water pump working mode corresponding to the physical fault is determined according to the first corresponding relation. For example, when the failure of the water pump is blocking, determining that the water pump working mode corresponding to blocking is the third working mode according to the first corresponding relation. The third working mode is used for controlling the water pump to stop running. The water pump blocking failure means that the cooling loop is blocked, the cooling liquid in the cooling loop cannot form a loop, the temperature of a controlled object cannot be reduced, the cooling liquid circulates at the water pump side, and the service life of the water pump is reduced. Therefore, the blocking failure of the water pump belongs to serious failure, and the water pump needs to be controlled to stop running at the moment. And when the fault of the water pump is over-temperature, determining that the water pump working mode corresponding to blocking is a fourth working mode according to the first corresponding relation. The fourth working mode means that the rotating speed of the water pump is N3, the water pump needs to stop for f seconds after e seconds of working, and then the water pump works circularly according to the fourth working mode. Because the service life of the water pump is not affected by the over-temperature fault, the over-temperature fault belongs to a general fault, and the temperature regulation and control in the automobile are realized by adjusting the rotating speed and the working time of the water pump.

In another embodiment, the water pump enters a normal operating mode when there is no physical failure of the water pump. The working mode of the water pump corresponding to the temperature difference between the water pump temperature and the controlled object can be determined according to the second corresponding relation. The second correspondence is shown in table 2.

TABLE 2 second correspondence

Temperature difference	Rotational speed/rotation	Operating time/second	Downtime/second
				Greater than T2	N4	e	f
[T3,T2]	N5	h	i
				[T4,T3]	N6	j	i

For example, when the difference between the temperature of the water pump and the temperature of the controlled object is greater than the second temperature value (T2), the water pump is turned on, the rotation speed of the water pump is controlled to be N4 rpm, and the operation is stopped f s cycles after the operation e s. When the difference value between the temperature of the water pump and the temperature of the controlled object is between the second temperature value and the third temperature value (T3), the water pump is started, the rotating speed is controlled to be N5 rpm, and after the work h s, the work i s circulation is stopped. When the difference value between the temperature of the water pump and the temperature of the controlled object is between the third temperature value and the fourth temperature value (T4), the boiled water pump is started, the rotating speed is controlled to be N6 rpm, and after the water pump works j s, the water pump stops working i s cycles.

Because the greater the difference between the temperature of the water pump and the temperature of the controlled object, the higher the rotation speed of the water pump is required to quickly reduce the temperature of the controlled object. Thus, in embodiments of the present application, N4< N5< N6, e > h > j.

In the embodiment of the application, the threshold temperatures T2, T3 and T4 need hysteresis processing, so that the frequent change of the working mode of the water pump is prevented because the rotation speed of the water pump jumps around the threshold temperature T2 or T3 or T4 due to the temperature of the cooling liquid.

In the embodiment of the present application, the rotational speed, the working time, and the downtime in the first correspondence and the second correspondence are not limited, and the first correspondence and the second correspondence are only explained as examples.

In addition, when a water pump overtime fault is detected, a physical fault of the water pump is also detected. And if the overtime fault of the water pump is caused by the physical fault of the water pump, controlling the working mode of the water pump according to the physical fault mode of the water pump. The operation mode of controlling the water pump according to the physical failure mode of the water pump is described in detail above, and will not be described herein.

If no physical fault of the water pump is detected after the overtime fault of the water pump is detected, the water pump is judged to be aged, the working capacity is insufficient, fault codes are stored at the moment, and the instrument prompts maintenance so that a vehicle owner can replace the aged water pump in time, and the working mode of the water pump is normally determined according to the water pump at the moment. The operation mode of the water pump is determined according to the normal operation of the water pump, which is described in detail above and will not be described in detail herein.

In summary, since the first correspondence between the failure cause of the water pump and the working mode of the water pump is stored in the automobile, the first correspondence is obtained through experimental verification in advance, and different working strategies (i.e. working modes) of the water pump are formulated for different failure causes by the first correspondence, the controlled object temperature can be cooled in advance by controlling the working mode of the water pump according to the first correspondence, the phenomenon of insufficient power is reduced, and the safety problem of the automobile is avoided.

It will be appreciated that, in order to implement the functions of the above embodiments, the computer device includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as a piece or as computer software driven hardware depends upon the particular application scenario and design constraints imposed on the solution.

Further, as an implementation of the method embodiment shown in fig. 2, an embodiment of the present application provides an apparatus for controlling an automobile water pump, where the apparatus is configured to control the water pump to be in different working modes according to different causes of water pump failure. The embodiment of the device corresponds to the foregoing method embodiment, and for convenience of reading, details of the foregoing method embodiment are not described one by one in this embodiment, but it should be clear that the device in this embodiment can correspondingly implement all the details of the foregoing method embodiment. As shown in fig. 4, the automobile water pump control device 400 includes: a fault diagnosis module 410 and a water pump adjustment module 420.

The fault diagnosis module 410 is configured to determine a fault cause of the water pump, where the fault cause includes a temperature sensor fault, a timeout fault, and a physical fault.

The water pump adjustment module 420 is configured to determine a water pump operation mode corresponding to the failure cause according to the first correspondence.

Further, as shown in fig. 4, the fault diagnosis module 410 is specifically configured to determine whether the working time of the water pump exceeds a threshold value when the water pump temperature sensor is not faulty and the water pump is in a working state; and when the working time of the water pump exceeds a threshold value, indicating that the water pump is overtime fault.

Further, as shown in fig. 4, the water pump adjusting module 420 is specifically configured to control the water pump to suspend operation for a first time when the water pump is in a time-out failure and the difference between the temperature of the water pump and the temperature of the controlled object is smaller than a first temperature value, so that the water pump is in a non-working state; or when the water pump is overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is larger than the first temperature value, determining the working mode of the water pump corresponding to the overtime fault as a first working mode according to the first corresponding relation.

Further, as shown in fig. 4, a second correspondence between a temperature difference value between a temperature of the water pump and a controlled object and a working mode of the water pump is stored in the automobile, and the water pump adjusting module 420 is specifically configured to determine whether a physical fault exists in the water pump in a first time when the water pump is in a non-working state; and when the water pump does not have physical faults, determining the working mode of the water pump corresponding to the temperature difference value of the water pump and the controlled object according to the second corresponding relation.

Further, as shown in fig. 4, the water pump adjustment module 420 is specifically configured to determine, when the overtime fault is caused by the physical fault, a water pump operation mode corresponding to the physical fault according to the first correspondence.

Further, as shown in fig. 4, the water pump adjustment module 420 is specifically configured to determine, when the water pump temperature sensor fails, that the water pump operation mode corresponding to the water pump temperature sensor failure is the second operation mode according to the first correspondence.

Further, as shown in fig. 4, the operation mode includes the rotation speed of the water pump and the operation time of the water pump.

Further, the embodiment of the present application further provides an electronic device, where the electronic device includes a processor and a memory, the fault diagnosis module 410 and the water pump adjustment module 420 are both stored as program units in the memory, and the processor executes the program units stored in the memory to implement corresponding functions. The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory.

The embodiment of the application provides a storage medium, wherein a program is stored on the storage medium, and the program is executed by a processor to realize the automobile water pump control method.

The embodiment of the application provides a processor which is used for running a program, wherein the program runs to execute the automobile water pump control method.

The application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with the method steps of: the method is applied to an automobile, wherein a first corresponding relation between a water pump failure reason and a water pump working mode is stored in the automobile, and the method comprises the following steps: determining fault reasons of the water pump, wherein the fault reasons comprise a temperature sensor fault, a overtime fault and a physical fault; and determining a water pump working mode corresponding to the fault reason according to the first corresponding relation.

Further, when the water pump temperature sensor is not failed and the water pump is in a working state, judging whether the working time of the water pump exceeds a threshold value; and when the working time of the water pump exceeds a threshold value, indicating that the water pump is overtime fault.

Further, when the water pump is in overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is smaller than a first temperature value, controlling the water pump to stop running for a first time so as to enable the water pump to be in a non-working state; or when the water pump is overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is larger than the first temperature value, determining the working mode of the water pump corresponding to the overtime fault as a first working mode according to the first corresponding relation.

Further, the second correspondence between the temperature difference between the water pump temperature and the controlled object and the water pump working mode is stored in the automobile, and the method further comprises: judging whether the water pump has physical faults or not in the first time when the water pump is in a non-working state; and when the water pump does not have physical faults, determining the working mode of the water pump corresponding to the temperature difference value of the water pump and the controlled object according to the second corresponding relation.

Further, when the overtime fault is caused by the physical fault, determining a water pump working mode corresponding to the physical fault according to the first corresponding relation.

Further, determining a water pump working mode corresponding to the failure cause according to the first corresponding relation, and further includes: when the water pump temperature sensor fails, determining that the water pump working mode corresponding to the water pump temperature sensor failure is a second working mode according to the first corresponding relation.

Further, the operation mode includes a rotational speed of the water pump and an operation time of the water pump.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, the device includes one or more processors (CPUs), memory, and a bus. The device may also include input/output interfaces, network interfaces, and the like.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims

1. The automobile water pump control method is characterized by being applied to an automobile, wherein a first corresponding relation between a water pump failure cause and a water pump working mode is stored in the automobile, and the method comprises the following steps:

determining a failure reason of the water pump;

and determining a water pump working mode corresponding to the fault reason according to the first corresponding relation.

2. The method of claim 1, wherein determining a cause of a failure of a water pump comprises:

when a water pump temperature sensor is not failed and the water pump is in a working state, judging whether the working time of the water pump exceeds a threshold value;

and when the working time of the water pump exceeds the threshold value, indicating that the water pump is overtime fault.

3. The method of claim 2, wherein determining the water pump operating mode corresponding to the cause of the failure according to the first correspondence relationship comprises:

when the water pump is in overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is smaller than a first temperature value, controlling the water pump to stop running for a first time so as to enable the water pump to be in a non-working state; or alternatively, the first and second heat exchangers may be,

and when the water pump is overtime fault and the difference value between the temperature of the water pump and the temperature of the controlled object is larger than a first temperature value, determining the working mode of the water pump corresponding to the overtime fault as a first working mode according to the first corresponding relation.

4. A method according to claim 3, wherein a second correspondence between the difference between the water pump temperature and the controlled object temperature and the water pump operation mode is stored in the vehicle, and the method further comprises:

judging whether the water pump has physical faults or not in the first time when the water pump is in a non-working state;

and when the water pump does not have physical faults, determining the working mode of the water pump corresponding to the temperature difference value of the water pump and the controlled object according to the second corresponding relation.

5. The method according to claim 4, wherein the method further comprises:

and when the overtime fault is caused by the physical fault, determining a water pump working mode corresponding to the physical fault according to the first corresponding relation.

6. The method of claim 1, wherein determining the water pump operating mode corresponding to the cause of the failure according to the first correspondence relationship further comprises:

and when the water pump temperature sensor fails, determining that the water pump working mode corresponding to the water pump temperature sensor failure is a second working mode according to the first corresponding relation.

7. The method according to any one of claims 1-6, wherein the operation mode comprises a rotational speed of the water pump and an operation time of the water pump.

8. An automotive water pump control device, wherein a first correspondence between a cause of a water pump failure and a water pump operating mode is stored in the device, the device comprising:

the fault diagnosis module is used for determining the fault reason of the water pump;

and the water pump adjusting module is used for determining the water pump working mode corresponding to the fault reason according to the first corresponding relation.

9. A storage medium comprising a stored program, wherein the program, when executed, controls a device in which the storage medium is located to execute the automobile water pump control method according to any one of claims 1 to 7.

10. An electronic device comprising at least one processor, and at least one memory, bus coupled to the processor; the processor and the memory complete communication with each other through the bus; the processor is configured to call up program instructions in the memory to perform the automobile water pump control method according to any one of claims 1 to 7.