Control method, device and equipment of electronic water pump, storage medium and vehicle

Abstract

The application relates to a control method and device of an electronic water pump, equipment, a storage medium and a vehicle, and relates to the technical field of vehicle control. The method is applied to an electronic water pump in a vehicle. The electronic water pump is connected with an electronic control unit through a first communication interface. The electronic water pump is connected with a relay through a second communication interface. The relay is connected with a storage battery. The relay is used for being turned on when the vehicle is in a power-on state and being turned off when the vehicle is in a power-off state. The method comprises the following steps: in the case that the communication connection between the electronic water pump and the electronic control unit is interrupted, a level signal sent by the relay is acquired through the second communication interface, and the running state of the electronic water pump is determined according to the level signal. Since the relay selected in the application is a low-power level relay, the cost can be effectively reduced, and the arrangement space is saved. Meanwhile, the implementation mode of the second communication interface is simple, and can be applied to more vehicles.

Description

Technical Field

[0001] This application relates to the field of automotive engine technology, and more particularly to the field of electronic water pump technology, specifically to a control method, device, equipment, storage medium, and vehicle for an electronic water pump. Background Technology

[0002] Electric water pump communication protocols typically include Local Interconnect Network (LIN) and Controller Area Network (CAN) protocols. The electronic control unit (ECU) can send control signals to the electric water pump via either LIN or CAN to make the pump operate accordingly. However, if either the LIN or CAN communication protocol fails, the ECU cannot control the electric water pump.

[0003] Currently, to control the electric water pump when the communication connection between the electronic control unit and the electric water pump is interrupted, the following two methods are commonly used: 1. Connect a relay to both the battery and the electric water pump. When the vehicle is powered off, the relay disconnects, preventing the battery from supplying power to the electric water pump, thus stopping its operation. 2. Develop a pulse width modulation (PWM) communication method between the electronic control unit and the electric water pump, enabling control of the electric water pump via PWM communication even when the communication connection between the two is interrupted.

[0004] However, in the first method described above, the relay is located between the battery and the electric water pump. Because the electric water pump requires a large current, a high-power relay is needed. High-power relays are expensive, bulky, and require more installation space. Meanwhile, in the second method, developing two communication methods is costly, and both the electric water pump and the electronic control unit need interfaces, making it unsuitable for many vehicle models.

[0005] Therefore, how to control the electronic water pump at low cost when the communication connection between the electronic control unit and the electronic water pump is interrupted is a technical solution that urgently needs to be solved. Summary of the Invention

[0006] This application provides a control method, apparatus, device, storage medium, and vehicle for an electronic water pump, to at least solve the technical problem in related technologies where low-cost control of an electronic water pump is impossible when the communication connection between the electronic control unit and the electronic water pump is interrupted. The technical solution of this application is as follows:

[0007] According to a first aspect of this application, a control method for an electronic water pump is provided, applied to an electronic water pump in a vehicle. The vehicle further includes an electronic control unit, a relay, and a battery. The electronic water pump is connected to the electronic control unit via a first communication interface, and to the relay via a second communication interface. The relay is connected to the battery. The relay is used to conduct when the vehicle is powered on and to disconnect when the vehicle is powered off. The method includes: in the event of an interruption in the communication connection between the electronic water pump and the electronic control unit, acquiring a voltage level signal sent by the relay via the second communication interface; and determining the operating state of the electronic water pump based on the voltage level signal.

[0008] According to the aforementioned technical means, in this application, the electronic water pump and the relay are connected via a second communication interface, and the relay is connected to the battery. When the electronic water pump receives the level signal sent by the relay, the current flowing through the relay is relatively small. Thus, selecting a low-power relay can meet the requirements, effectively reducing costs. Furthermore, low-power relays are smaller in size, saving layout space. Simultaneously, only the second communication interface needs to be placed on the electronic water pump to control the electronic water pump even when the communication connection between the electronic water pump and the electronic control unit is interrupted. The implementation method is simple and applicable to a wider range of vehicles.

[0009] In one possible implementation, determining the operating state of the electronic water pump based on the level signal includes: controlling the electronic water pump to operate at a preset speed when the level signal is high; and controlling the electronic water pump to stop operating when the level signal is low.

[0010] Based on the aforementioned technical means, this application allows the electronic water pump to operate at a preset speed when the vehicle is powered on, effectively preventing the engine coolant temperature from becoming too high. Simultaneously, when the vehicle is powered off, controlling the electronic water pump to stop operating can prevent the battery from becoming depleted.

[0011] In one possible implementation, the above-mentioned control method for the electronic water pump further includes: when the communication connection between the electronic water pump and the electronic control unit is interrupted and the electronic water pump is running at a preset speed, detecting whether the level signal is a low level signal, and controlling the electronic water pump to stop running when the detected level signal is a low level signal.

[0012] Based on the above technical means, this application can quickly respond to the vehicle's power-off state and control the electronic water pump to stop operating when the communication connection between the electronic control unit and the electronic water pump is interrupted, by continuously detecting whether the level signal is a low level signal, thus avoiding battery depletion.

[0013] In one possible implementation, the electronic control unit is used to send a control signal to the electronic water pump through a first communication interface. The control signal includes the operating status of the electronic water pump. The control method of the electronic water pump further includes: determining that the communication connection between the electronic water pump and the electronic control unit is interrupted when the duration for which the electronic water pump does not receive the control signal is greater than or equal to a preset duration.

[0014] Based on the aforementioned technical means, this application can accurately determine whether the communication connection between the electronic control unit and the electronic water pump is normal based on the duration during which the electronic water pump does not receive a control signal.

[0015] According to a second aspect of this application, a control device for an electronic water pump is provided, which is applied to an electronic water pump in a vehicle. The vehicle also includes an electronic control unit, a relay, and a battery. The electronic water pump is connected to the electronic control unit via a first communication interface, and to the relay via a second communication interface. The relay is connected to the battery. The relay is used to conduct when the vehicle is powered on and to disconnect when the vehicle is powered off. The control device for the electronic water pump includes an acquisition unit and a determination unit. The acquisition unit is used to acquire a level signal sent by the relay via the second communication interface when the communication connection between the electronic water pump and the electronic control unit is interrupted. The determination unit is used to determine the operating state of the electronic water pump based on the level signal.

[0016] In one possible implementation, the aforementioned determining unit is specifically used to: control the electronic water pump to operate at a preset speed when the level signal is a high level signal; and control the electronic water pump to stop operating when the level signal is a low level signal.

[0017] In one possible implementation, the control device for the above-mentioned electronic water pump further includes a processing unit, which is used to: detect whether the level signal is a low level signal when the communication connection between the electronic water pump and the electronic control unit is interrupted and the electronic water pump is running at a preset speed, and control the electronic water pump to stop running when the detected level signal is a low level signal.

[0018] In one possible implementation, the electronic control unit is used to send a control signal to the electronic water pump through a first communication interface. The control signal includes the operating status of the electronic water pump. The aforementioned determining unit is further used to determine that the communication connection between the electronic water pump and the electronic control unit is interrupted if the duration during which the electronic water pump does not receive the control signal is greater than or equal to a preset duration.

[0019] According to a third aspect provided in this application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute instructions to implement the method of the first aspect described above and any possible implementation thereof.

[0020] According to a fourth aspect provided in this application, a computer-readable storage medium is provided that, when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to perform the method described in the first aspect and any possible implementation thereof.

[0021] According to the fifth aspect provided in this application, a vehicle is provided, comprising: an electronic control unit, a relay, a storage battery, and an electronic water pump for performing the method described in the first aspect and any possible embodiment thereof.

[0022] According to the sixth aspect provided in this application, a computer program product is provided, the computer program product including computer instructions, which, when executed on an electronic device, cause the electronic device to perform the method described in the first aspect and any possible implementation thereof.

[0023] Therefore, the above-mentioned technical features of this application have the following beneficial effects:

[0024] (1) Selecting a low-power relay can meet the requirements, effectively reducing costs. Furthermore, low-power relays are smaller in size, saving space. Additionally, only a second communication interface needs to be installed on the electric water pump to control it even if the communication connection between the electric water pump and the electronic control unit is interrupted. This simple implementation method is applicable to a wider range of vehicles.

[0025] (2) When the vehicle is powered on, the electric water pump operates at a preset speed, which can effectively prevent the engine coolant temperature from becoming too high. At the same time, when the vehicle is powered off, controlling the electric water pump to stop operating can prevent the battery from becoming depleted.

[0026] (3) In the event of an interruption in the communication connection between the electronic control unit and the electronic water pump, by continuously detecting whether the level signal is a low level signal, it can quickly respond to the power-off state of the vehicle, control the electronic water pump to stop running, and avoid the battery from being depleted.

[0027] (4) Based on the duration of the electronic water pump not receiving a control signal, it is possible to accurately determine whether the communication connection between the electronic control unit and the electronic water pump is normal.

[0028] It should be noted that the technical effects of any of the implementation methods in aspects two through six can be found in the technical effects of the corresponding implementation methods in aspect one, and will not be repeated here.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0031] Figure 1 This is a schematic diagram of the structure of a vehicle according to an exemplary embodiment;

[0032] Figure 2 This is a schematic diagram of the structure of another vehicle according to an exemplary embodiment;

[0033] Figure 3 This is a schematic diagram of the structure of another vehicle according to an exemplary embodiment;

[0034] Figure 4 This is a flowchart illustrating a control method for an electronic water pump according to an exemplary embodiment;

[0035] Figure 5 This is a flowchart illustrating yet another control method for an electronic water pump according to an exemplary embodiment;

[0036] Figure 6 This is a flowchart illustrating yet another control method for an electronic water pump according to an exemplary embodiment;

[0037] Figure 7 This is a flowchart illustrating yet another control method for an electronic water pump according to an exemplary embodiment;

[0038] Figure 8 This is a block diagram illustrating a control device for an electronic water pump according to an exemplary embodiment;

[0039] Figure 9 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0041] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] Before providing a detailed description of the control method for the electronic water pump provided in this application, a brief introduction to the prior art related to this application will be given.

[0043] In order to control the electric water pump in the event of a communication interruption between the electronic control unit and the electric water pump, the following two methods are commonly used in the prior art.

[0044] 1. Connect the relay to both the battery and the electric water pump. When the vehicle is powered off, the relay disconnects, preventing the battery from supplying power to the electric water pump, thus stopping the pump from operating. Specifically, as follows... Figure 1 The diagram shows a structural schematic of a vehicle 10. The vehicle 10 includes an electric water pump 11, an electronic control unit 12, a first communication interface 13, a battery 14, and a relay 15. The electronic control unit 12 is connected to the electric water pump 11 via the first communication interface 13. The relay 15 is connected to the positive terminal of the electronic control unit 12 and the positive terminal of the battery 14, respectively, and the negative terminal of the electric water pump 11 is connected to the negative terminal of the battery 14. When the communication connection between the electronic control unit 12 and the electric water pump 11 is interrupted, if the vehicle is powered on, the relay 15 closes, the battery 14 provides power to the electric water pump 11, and the electric water pump 11 operates at a preset speed. When the communication connection between the electronic control unit 12 and the electric water pump 11 is interrupted, if the vehicle is powered off, the relay 15 opens, the battery 14 cannot provide power to the electric water pump 11, and the electric water pump 11 stops operating.

[0045] Second, develop a PWM communication method between the electronic control unit and the electric water pump to enable control of the electric water pump via PWM communication even if the communication connection between the electronic control unit and the electric water pump is interrupted. Specifically, such as... Figure 2The diagram shows a structural schematic of a vehicle 10. The vehicle 10 includes an electric water pump 11, an electronic control unit 12, a first communication interface 13, a battery 14, and an emergency communication interface 16. The electronic control unit 12 is connected to the electric water pump 11 via the first communication interface 13, and also via the emergency communication interface 16. The positive terminal of the electric water pump 11 is connected to the positive terminal of the battery 14, and the negative terminal of the electric water pump 11 is connected to the negative terminal of the battery 14. In the event of a communication interruption between the electronic control unit 12 and the electric water pump 11, the electronic control unit 12 sends a control signal to the electric water pump 11 via the emergency communication interface 16 to control the operation or shutdown of the electric water pump 11.

[0046] Before providing a detailed description of the control method for the electronic water pump provided in this application, a brief introduction to the implementation environment (implementation architecture) involved in this application will be given.

[0047] The control method for the electronic water pump provided in this application embodiment can be applied to electronic water pumps in vehicles. Figure 3 A schematic diagram of one structure of the vehicle 10 is shown. For example... Figure 3 As shown, the vehicle 10 includes an electronic water pump 11, an electronic control unit 12, a battery 14, and a relay 15. The electronic water pump 11 is connected to the electronic control unit 12 through a first communication interface 13, and the electronic water pump 11 is connected to the relay 15 through a second communication interface 17. The relay 15 is connected to the battery 14, the positive terminal of the electronic water pump 11 is connected to the positive terminal of the battery 14, and the negative terminal of the electronic water pump 11 is connected to the negative terminal of the battery 14.

[0048] The electronic control unit 12 is used to send control signals to the electronic water pump 11 through the first communication interface 13. The control signals include the operating status of the electronic water pump.

[0049] Relay 15 is used to turn on when vehicle 10 is powered on and to turn off when vehicle 10 is powered off.

[0050] Battery 14 is used to provide power to electric water pump 11.

[0051] The electronic water pump 11 is used to receive control signals sent by the electronic control unit 12 through the first communication interface 13 and to determine the operating status of the electronic water pump 11.

[0052] The electronic water pump 11 has a built-in control chip, control circuit, and control logic, which can process the received control signals and level signals.

[0053] For ease of understanding, the control method of the electronic water pump provided in this application will be described in detail below with reference to the accompanying drawings.

[0054] Figure 4 This is a flowchart illustrating a control method for an electronic water pump according to an exemplary embodiment. This control method can be applied to electronic water pumps in vehicles. Figure 4 As shown, the control method of this electronic water pump includes the following steps:

[0055] S201. In the event of an interruption in the communication connection between the electronic water pump and the electronic control unit, the electronic water pump obtains the level signal sent by the relay through the second communication interface.

[0056] As one possible implementation, when the communication connection between the electronic water pump and the electronic control unit is normal, the electronic water pump receives control signals sent by the electronic control unit through a first communication interface. When the communication connection between the electronic water pump and the electronic control unit is interrupted, the electronic water pump obtains the level signal sent by the relay through a second communication interface.

[0057] S202. The electronic water pump determines its operating status based on the level signal.

[0058] In one possible implementation, the relay is activated when the vehicle is powered on and deactivated when the vehicle is powered off. When the relay is activated, it sends a high-level signal to the electronic control unit (ECU); when the relay is deactivated, it sends a low-level signal. Furthermore, the electric water pump determines its operating status based on the relay's signal level.

[0059] The specific implementation method of this step can be referred to in the subsequent description of the embodiments of this application, and will not be repeated here.

[0060] Understandably, existing technologies typically employ high-power relays or two communication methods to control the electric water pump when the communication connection between the electronic control unit and the electric water pump is interrupted. However, these two methods are costly and unsuitable for all vehicles. In this application, the electric water pump and the relay are connected via a second communication interface, and the relay is connected to the battery. When the electric water pump receives a voltage signal from the relay, the current flowing through the relay is small. Thus, selecting a low-power relay can meet the requirements, effectively reducing costs. Furthermore, low-power relays are smaller in size, saving installation space. Simultaneously, only a second communication interface needs to be installed on the electric water pump to control it even when the communication connection between the electric water pump and the electronic control unit is interrupted. This simple implementation method is applicable to a wider range of vehicles.

[0061] In some embodiments, in order to determine the operating status of the electric water pump, such as Figure 5As shown, the above S202 can be implemented in the following way:

[0062] S301. When the level signal is high, the electronic water pump is controlled to operate at a preset speed.

[0063] It should be noted that the preset speed can be the maximum speed of the electronic water pump.

[0064] S302. When the level signal is low, the electronic water pump is controlled to stop operating.

[0065] Understandably, in the event of a communication interruption between the electronic control unit and the electric water pump, the vehicle's power-on / off status can be determined via a relay-sent electrical signal. Thus, when the vehicle is powered on, the electric water pump operates at a preset speed, effectively preventing the engine coolant temperature from overheating. Simultaneously, when the vehicle is powered off, stopping the electric water pump prevents the battery from becoming depleted.

[0066] In some embodiments, in order to quickly respond to the vehicle's power-off state, such as Figure 6 As shown, the control method for the electronic water pump provided in this application embodiment further includes:

[0067] S401. When the communication connection between the electronic water pump and the electronic control unit is interrupted, and the electronic water pump is running at a preset speed, the system detects whether the level signal is a low level signal.

[0068] S402. When the detected level signal is low, the electronic water pump is controlled to stop operating.

[0069] Understandably, in the event of a communication interruption between the electronic control unit and the electric water pump, by continuously detecting whether the level signal is low, the system can quickly respond to the vehicle's power-off state, control the electric water pump to stop operating, and prevent the battery from running out of power.

[0070] In some embodiments, to determine whether the communication connection between the electronic control unit and the electric water pump is normal, the electronic control unit sends a control signal to the electric water pump through a first communication interface. The control signal includes the operating status of the electric water pump, such as... Figure 7 As shown, the control method for the electronic water pump provided in this application embodiment further includes:

[0071] S501. If the duration for which the electronic water pump does not receive a control signal is greater than or equal to a preset duration, the communication connection between the electronic water pump and the electronic control unit is determined to be interrupted.

[0072] In one possible implementation, the electronic water pump sends control signals to itself via a first communication interface, and controls the electronic water pump to operate based on the operating status of the electronic water pump included in the control signals. Simultaneously, the electronic water pump sends feedback signals to the electronic control unit via the first communication interface, enabling the electronic control unit to monitor the fault status of the electronic water pump.

[0073] Furthermore, if the duration for which the electronic water pump does not receive a control signal is greater than or equal to a preset duration, the communication connection between the electronic water pump and the electronic control unit is determined to be interrupted.

[0074] For example, the preset duration can be 2 seconds.

[0075] Understandably, the electronic control unit sends control signals to the electric water pump to control its operating status. Therefore, by determining the duration for which the electric water pump does not receive a control signal, it is possible to accurately determine whether the communication connection between the electronic control unit and the electric water pump is normal.

[0076] The above primarily describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, the control device or electronic device of the electronic water pump includes corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0077] This application embodiment can, according to the above method, exemplarily divide the control device or electronic device of an electronic water pump into functional modules. For example, the control device or electronic device of an electronic water pump may include functional modules corresponding to each functional division, or two or more functions may be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division; in actual implementation, there may be other division methods.

[0078] Figure 8 This is a block diagram illustrating a control device 600 for an electronic water pump according to an exemplary embodiment. This control device 600 can be applied to an electronic water pump in a vehicle. (Refer to...) Figure 8 The control device 600 of the electronic water pump includes an acquisition unit 601 and a determination unit 602.

[0079] The acquisition unit 601 is used to acquire the level signal sent by the relay through the second communication interface when the communication connection between the electronic water pump and the electronic control unit is interrupted.

[0080] The determining unit 602 is used to determine the operating status of the electronic water pump based on the level signal.

[0081] Optionally, to determine the operating status of the electric water pump, such as Figure 8 As shown, the aforementioned determining unit 602 is specifically used for:

[0082] When the signal level is high, the electronic water pump is controlled to operate at a preset speed.

[0083] When the signal level is low, the electronic water pump stops operating.

[0084] Optionally, in order to quickly respond to the vehicle's power-off state, such as Figure 8 As shown, the control device 600 of the above-mentioned electronic water pump further includes a processing unit 603, which is used for:

[0085] If the communication connection between the electronic water pump and the electronic control unit is interrupted, and the electronic water pump is running at a preset speed, the system detects whether the level signal is low, and if the detected level signal is low, it controls the electronic water pump to stop running.

[0086] Optionally, to determine whether the communication connection between the electronic control unit and the electric water pump is normal, the electronic control unit sends a control signal to the electric water pump through the first communication interface. The control signal includes the operating status of the electric water pump, such as... Figure 8 As shown, the determining unit 602 is further configured to:

[0087] If the duration for which the electronic water pump does not receive a control signal is greater than or equal to the preset duration, it is determined that the communication connection between the electronic water pump and the electronic control unit is interrupted.

[0088] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0089] Figure 9 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Figure 9 As shown, the electronic device 700 includes, but is not limited to, a processor 701 and a memory 702.

[0090] The memory 702 described above is used to store the executable instructions of the processor 701. It is understood that the processor 701 is configured to execute instructions to implement the electronic water pump control method in the above embodiment.

[0091] It should be noted that those skilled in the art will understand that Figure 9 The electronic device structure shown does not constitute a limitation on the electronic device; the electronic device may include, but is not limited to, other electronic devices. Figure 9 This may indicate more or fewer components, or combinations of certain components, or different component arrangements.

[0092] Processor 701 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in memory 702, and by calling data stored in memory 702, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. Processor 701 may include one or more processing units. Optionally, processor 701 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into processor 701.

[0093] The memory 702 can be used to store software programs and various data. The memory 702 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and application programs required by at least one functional module (such as an acquisition unit, a determination unit, and a processing unit). Furthermore, the memory 702 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0094] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 702 including instructions, which can be executed by a processor 701 of an electronic device 700 to implement the electronic water pump control method in the above embodiments.

[0095] In actual implementation, Figure 8 The functions of the acquisition unit 601, the determination unit 602, and the processing unit 603 can all be provided by... Figure 9 The processor 701 calls the computer program stored in the memory 702 to implement the process. The specific execution process can be found in the description of the electronic water pump control method in the previous embodiment, and will not be repeated here.

[0096] Optionally, the computer-readable storage medium may be a non-transitory computer-readable storage medium, such as a read-only memory (ROM), random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[0097] In an exemplary embodiment, this application also provides a vehicle including an electronic control unit, a relay, a battery, and an electronic water pump for performing the methods described in the first aspect and any possible implementation thereof.

[0098] In an exemplary embodiment, this application also provides a computer program product including one or more instructions, which can be executed by a processor of an electronic device to complete the electronic water pump control method in the above embodiments.

[0099] It should be noted that when one or more instructions in the computer-readable storage medium or computer program product are executed by the processor of the electronic device, they implement the various processes of the above-described electronic water pump control method embodiment and achieve the same technical effect as the above-described electronic water pump control method. To avoid repetition, they will not be described again here.

[0100] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0102] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0103] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0104] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0105] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method for an electronic water pump, characterized in that, A control chip for use in an electronic water pump in a vehicle, the vehicle also including an electronic control unit, a relay and a battery, the electronic water pump being connected to the electronic control unit via a first communication interface, the electronic water pump being connected to the relay via a second communication interface, the relay being connected to the battery, the relay being used to turn on when the vehicle is powered on and to turn off when the vehicle is powered off; The relay is a low-power level relay; The method includes: In the event of an interruption in the communication connection between the electronic water pump and the electronic control unit, the level signal of the relay is detected through the second communication interface; When the level signal is a high level signal, it is determined that the vehicle is powered on, and the electronic water pump is controlled to operate at a preset speed. When the level signal is low, it is determined that the vehicle is in a power-off state, and the electronic water pump is controlled to stop operating; The preset rotation speed is the maximum rotation speed of the electronic water pump.

2. The method according to claim 1, characterized in that, The method further includes: If the communication connection between the electronic water pump and the electronic control unit is interrupted, and the electronic water pump is operating at the preset speed, the system detects whether the level signal is a low level signal, and if the detected level signal is a low level signal, controls the electronic water pump to stop operating.

3. The method according to claim 1 or 2, characterized in that, The electronic control unit is used to send control signals to the electronic water pump through the first communication interface. The control signals include the operating status of the electronic water pump. The method further includes: If the duration during which the electronic water pump does not receive the control signal is greater than or equal to a preset duration, it is determined that the communication connection between the electronic water pump and the electronic control unit is interrupted.

4. A control device for an electronic water pump, characterized in that, A control chip is used in an electronic water pump in a vehicle. The vehicle also includes an electronic control unit, a relay, and a battery. The electronic water pump is connected to the electronic control unit via a first communication interface and to the relay via a second communication interface. The relay is connected to the battery. The relay is used to turn on when the vehicle is powered on and to turn off when the vehicle is powered off. The relay is a low-power relay. The device includes an acquisition unit and a determination unit; The acquisition unit is used to detect the level signal sent by the relay through the second communication interface when the communication connection between the electronic water pump and the electronic control unit is interrupted. The determining unit is configured to determine that the vehicle is in a powered-on state when the level signal is a high-level signal, and control the electronic water pump to operate at a preset speed; and to determine that the vehicle is in a powered-off state when the level signal is a low-level signal, and control the electronic water pump to stop operating; wherein the preset speed is the maximum speed of the electronic water pump.

5. The apparatus according to claim 4, characterized in that, The device further includes a processing unit, the processing unit being used for: If the communication connection between the electronic water pump and the electronic control unit is interrupted, and the electronic water pump is operating at the preset speed, the system detects whether the level signal is a low level signal, and if the detected level signal is a low level signal, controls the electronic water pump to stop operating.

6. The apparatus according to claim 4 or 5, characterized in that, The electronic control unit is used to send control signals to the electronic water pump through the first communication interface, the control signals including the operating status of the electronic water pump. The determining unit is further used for: If the duration during which the electronic water pump does not receive the control signal is greater than or equal to a preset duration, it is determined that the communication connection between the electronic water pump and the electronic control unit is interrupted.

7. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the method as described in any one of claims 1 to 3.

8. A computer-readable storage medium, characterized in that, When the computer-executable instructions stored in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device is capable of performing the method as described in any one of claims 1 to 3.

9. A vehicle, characterized in that, include: An electronic control unit, a relay, a storage battery, and an electronic water pump that performs the method as described in any one of claims 1 to 3.

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