Bearing cleaning method, system, terminal and storage medium for electronic water pump

Abstract

The application relates to the technical field of electronic water pumps, and discloses a bearing cleaning method and system for an electronic water pump, a terminal and a storage medium. The application determines the running state of the electronic water pump according to the comparison result between the monitored running parameter and the running parameter interval. If the running state of the electronic water pump is a low-load state, and the duration of the low-load state of the electronic water pump is greater than or equal to a low-load duration threshold, the running parameter of the electronic water pump is controlled according to preset cleaning parameters, the water pump bearing of the electronic water pump is cleaned, and the preset cleaning parameters are greater than the running parameter corresponding to the low-load state of the electronic water pump. Since the running parameter of the electronic water pump is increased through the preset cleaning parameters, the water pump bearing is flushed, the flux residue in the cooling liquid is taken away along with the flushing, impurities in the cooling liquid are prevented from accumulating between the water pump rotor and the water pump bearing, and the maintenance cost of the electronic water pump is reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic water pump technology, and in particular to a bearing cleaning method, system, terminal, and storage medium for electronic water pumps. Background Technology

[0002] In the production of new energy vehicles, brazing is commonly used to weld components such as radiators, plate heat exchangers, battery coolers, motors, and electronic control systems. After brazing, varying degrees of flux residue remain inside each component, circulating with the coolant during vehicle use. This flux residue in the coolant does not affect coolant circulation or the heat dissipation of the cooling devices. Furthermore, when the vehicle is in normal operating modes such as driving mode, the high coolant flow rate washes away the flux residue, preventing blockages.

[0003] However, as vehicle terminals become more and more functional, when the vehicle terminal is in low-load modes such as sentry mode, the heat dissipation requirements of the vehicle terminal are small, and the electric water pump used to deliver coolant is also running at low speed. This means that flux residue in the coolant cannot be carried away by the coolant, but instead accumulates between the water pump rotor and the water pump bearing, causing abnormal wear of the water pump bearing, which in turn causes abnormal noise or blockage of the electric water pump, increasing the maintenance cost of the electric water pump. Summary of the Invention

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] In view of the shortcomings of the prior art described above, this application discloses a bearing cleaning method, system, terminal and storage medium for electronic water pumps, so as to avoid flux residue in the coolant from accumulating between the water pump rotor and the water pump bearing, thereby reducing the maintenance cost of electronic water pumps.

[0006] This application discloses a method for cleaning the bearings of an electronic water pump, comprising: acquiring an operating parameter range and a low-load duration threshold corresponding to the electronic water pump; in response to the electronic water pump being in a working mode, monitoring the operating parameters of the electronic water pump, and determining the operating state of the electronic water pump based on a comparison between the monitored operating parameters and the operating parameter range, wherein the operating parameters include one or more of a control signal duty cycle, water pump liquid flow rate, and water pump rotation speed; if the operating state of the electronic water pump is a low-load state, and the duration of the electronic water pump being in the low-load state is greater than or equal to the low-load duration threshold, then controlling the electronic water pump to switch from the working mode to a cleaning mode; in response to the electronic water pump being in the cleaning mode, controlling the operating parameters of the electronic water pump according to preset cleaning parameters to clean the water pump bearings of the electronic water pump, wherein the preset cleaning parameters are greater than the operating parameters corresponding to the electronic water pump in the low-load state.

[0007] In some embodiments, the method further includes: the electronic water pump being disposed in a vehicle terminal; in response to the vehicle terminal being powered on, controlling the operating parameters of the electronic water pump according to preset initial parameters, and recording the initial control duration of the electronic water pump corresponding to the preset initial parameters, wherein the preset initial parameters are greater than the operating parameters of the electronic water pump corresponding to a low-load state; if the initial control duration is greater than or equal to a preset initial rinsing duration, controlling the electronic water pump to enter a working mode, and setting the number of cleaning modes of the electronic water pump to a preset initial value.

[0008] In some embodiments, if the electronic water pump is in a low-load state and the duration of the low-load state is greater than or equal to the low-load duration threshold, then the electronic water pump is controlled to switch from the working mode to the cleaning mode. This includes: if there are multiple low-load duration thresholds, obtaining the first number interval corresponding to each low-load duration threshold, wherein the low-load duration threshold and the first number interval are negatively correlated; if the electronic water pump is in a low-load state, recording the duration of the low-load state, and determining a first target threshold from each low-load duration threshold based on the matching result between the cleaning mode number and each of the first number intervals; if the duration of the state is greater than or equal to the first target threshold, then the electronic water pump is controlled to switch from the working mode to the cleaning mode, and the cleaning mode number of the electronic water pump is increased.

[0009] In some embodiments, the method further includes: acquiring multiple cleaning duration thresholds and second number intervals corresponding to each of the cleaning duration thresholds, wherein the cleaning duration thresholds and the second number intervals are negatively correlated; if the electronic water pump is in cleaning mode, recording the cleaning mode duration of the electronic water pump in cleaning mode, and determining a second target threshold from each of the cleaning duration thresholds based on the matching result between the number of cleaning modes and each of the second number thresholds; if the cleaning mode duration is greater than or equal to the second target threshold, controlling the electronic water pump to switch from cleaning mode to working mode.

[0010] In some embodiments, determining the operating state of the electronic water pump based on a comparison between the monitored operating parameters and the operating parameter range includes: if the monitored operating parameters are within the operating parameter range, then determining the operating state of the electronic water pump as a low-load state; if the monitored operating parameters are outside the operating parameter range, then determining the operating state of the electronic water pump as a normal state, wherein the operating parameters corresponding to the normal state are greater than the operating parameters corresponding to the low-load state.

[0011] In some embodiments, obtaining multiple cleaning duration thresholds and the second number intervals corresponding to each cleaning duration threshold includes: determining each of the first number intervals as a target interval; calculating a preset low-load parameter based on the low-load duration threshold corresponding to the target interval to obtain the current total liquid flow rate, wherein the low-load parameter is within the operating parameter interval; calculating the current total liquid flow rate based on the preset cleaning parameter to obtain the desired cleaning duration; determining the desired cleaning duration as a cleaning duration threshold, and determining the target interval as the second number interval corresponding to the desired cleaning duration.

[0012] In some embodiments, the method further includes: the electronic water pump includes a water pump rotor and a water pump bearing; the liquid transported by the electronic water pump passes through the gap between the water pump rotor and the water pump bearing, and the gap distance is greater than the diameter of solid impurities in the liquid.

[0013] This application discloses a bearing cleaning system for an electronic water pump, comprising: an acquisition module for acquiring the operating parameter range and low-load duration threshold of the electronic water pump; a working mode module for monitoring the operating parameters of the electronic water pump in response to the electronic water pump being in working mode, and determining the operating state of the electronic water pump based on the comparison result between the monitored operating parameters and the operating parameter range, wherein the operating parameters include one or more of control signal duty cycle, water pump liquid flow rate, and water pump speed; a conversion module for controlling the electronic water pump to switch from working mode to cleaning mode if the operating state of the electronic water pump is a low-load state and the duration of the low-load state is greater than or equal to the low-load duration threshold; and a cleaning mode module for controlling the operating parameters of the electronic water pump according to preset cleaning parameters in response to the electronic water pump being in cleaning mode, so as to clean the water pump bearing of the electronic water pump, wherein the preset cleaning parameters are greater than the operating parameters of the electronic water pump corresponding to the low-load state.

[0014] This application discloses a vehicle terminal, including: an electronic water pump, a processor, and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to enable the vehicle terminal to perform the above-described method.

[0015] This application discloses a computer-readable storage medium storing computer-readable instructions that, when executed by a computer's processor, cause the computer to perform the aforementioned method.

[0016] The beneficial effects of this application are:

[0017] The operating status of the electric water pump is determined by comparing the monitored operating parameters with the operating parameter range. If the electric water pump is in a low-load state, and the duration of the low-load state is greater than or equal to a low-load duration threshold, then the operating parameters of the electric water pump are controlled according to preset cleaning parameters to clean the pump bearings. These preset cleaning parameters are greater than the operating parameters corresponding to the low-load state. This system divides the electric water pump into a working mode and a cleaning mode. When the electric water pump is in a low-load state for an extended period, it is switched to cleaning mode. By increasing the operating parameters of the electric water pump through the preset cleaning parameters, the pump bearings are flushed. Flux residues in the coolant are carried away with the flushing, preventing impurities from accumulating between the pump rotor and the pump bearings. This reduces the occurrence of abnormal noises and stalling, thereby lowering the maintenance costs of the electric water pump. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of an electronic water pump in an embodiment of the present invention;

[0019] Figure 2 This is a schematic flowchart of a bearing cleaning method for an electronic water pump according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic flowchart of another bearing cleaning method for an electronic water pump in an embodiment of the present invention;

[0021] Figure 4 This is a schematic flowchart of another bearing cleaning method for an electronic water pump in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a bearing cleaning system for an electronic water pump according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. Detailed Implementation

[0024] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and sub-samples in the embodiments can be combined with each other.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0027] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure 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 for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0028] Unless otherwise stated, the term "multiple" means two or more.

[0029] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0030] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0031] Combination Figure 1 As shown in the present disclosure, an embodiment of the bearing cleaning method for an electronic water pump is provided. The electronic water pump is installed in a vehicle terminal and includes a water pump rotor and a water pump bearing. The water pump rotor is used to convert mechanical energy into the kinetic and pressure energy of the fluid. Through this energy conversion, the water pump can effectively extract and transport water. The water pump bearing is used to reduce the friction between the water pump rotor and the shaft when the water pump rotor rotates at high speed, reduce the heat generated by friction, and thus reduce wear.

[0032] In this electronic water pump, there is a gap between the pump rotor and the pump bearing, and the gap distance is approximately 0.15-0.2 mm. At the same time, the coolant transported by the electronic water pump passes through the gap between the pump rotor and the pump bearing. The flux particles in the coolant have a diameter of approximately 0.2 μm. Since the vehicle terminal is in sentry mode with low heat dissipation requirements, the electronic water pump used to transport coolant is also operating at low speed. As a result, the flux residue in the coolant cannot be carried away by the coolant, but accumulates between the pump rotor and the pump bearing, leading to abnormal wear of the pump bearing.

[0033] Combination Figure 2 As shown, this disclosure provides a bearing cleaning method for an electronic water pump, including:

[0034] Step S201: Obtain the operating parameter range and low load duration threshold corresponding to the electronic water pump;

[0035] Step S202: In response to the electric water pump being in working mode, the operating parameters of the electric water pump are monitored, and the operating status of the electric water pump is determined based on the comparison results between the monitored operating parameters and the operating parameter range.

[0036] The operating parameters include one or more of the following: control signal duty cycle, water pump liquid flow rate, and water pump speed.

[0037] In response to the electronic water pump being in working mode, the operating parameters of the electronic water pump are controlled by a control signal;

[0038] Step S203: If the electronic water pump is in a low-load state and the duration of the low-load state is greater than or equal to the low-load duration threshold, then control the electronic water pump to switch from the working mode to the cleaning mode.

[0039] Step S204: In response to the electronic water pump being in cleaning mode, the operating parameters of the electronic water pump are controlled according to preset cleaning parameters to clean the water pump bearing of the electronic water pump.

[0040] Among them, the preset cleaning parameters are greater than the operating parameters of the electronic water pump under low load conditions;

[0041] In this case, the control signal duty cycle of the electronic water pump is greater than 60%, which can clean the water pump bearing of the electronic water pump.

[0042] The bearing cleaning method for an electronic water pump provided in this disclosure determines the operating state of the electronic water pump by comparing the monitored operating parameters with the operating parameter range. If the electronic water pump is in a low-load state, and the duration of the low-load state is greater than or equal to a low-load duration threshold, then the operating parameters of the electronic water pump are controlled according to preset cleaning parameters to clean the water pump bearing. The preset cleaning parameters are greater than the operating parameters corresponding to the low-load state. This divides the electronic water pump into a working mode and a cleaning mode. When the electronic water pump is in a low-load state for an extended period, it is switched to cleaning mode. By increasing the operating parameters of the electronic water pump through the preset cleaning parameters, the water pump bearing is flushed. Flux residue in the coolant is carried away with the flushing, preventing impurities in the coolant from accumulating between the water pump rotor and the water pump bearing. This reduces the occurrence of abnormal noises and stalling in the electronic water pump, thereby lowering the maintenance cost of the electronic water pump.

[0043] Optionally, the method further includes: in response to the vehicle terminal being powered on, controlling the operating parameters of the electronic water pump according to preset initial parameters, and recording the initial control duration of the electronic water pump corresponding to the preset initial parameters, wherein the preset initial parameters are greater than the operating parameters of the electronic water pump corresponding to the low load state; if the initial control duration is greater than or equal to the preset initial flushing duration, controlling the electronic water pump to enter the working mode, and setting the number of cleaning modes of the electronic water pump to the preset initial value.

[0044] In some embodiments, the preset initial parameters include a control signal duty cycle of 60% and an initial rinsing duration of 2 minutes.

[0045] In some embodiments, combined with Figure 3 As shown, the vehicle terminal's VCU (Vehicle Control Unit) controls the electronic water pump to run for 2 minutes with a control signal duty cycle of 60% to perform an initial flushing of the water pump bearings; subsequently, the electronic water pump is controlled to enter the working mode so that it runs according to the control signals sent by the vehicle terminal.

[0046] In this way, after the vehicle terminal is powered on, the water pump bearing of the electronic water pump is first flushed to remove the impurities that accumulated on the water pump bearing during the last use of the vehicle terminal. Then, the electronic water pump is controlled to enter the working mode to further improve the cleaning effect on the impurities on the water pump bearing.

[0047] In some embodiments, setting the number of cleaning modes of the electronic water pump to a preset initial value includes setting the number of cleaning modes of the electronic water pump to an initial value of 0.

[0048] Optionally, the operating status of the electronic water pump is determined based on the comparison between the monitored operating parameters and the operating parameter range, including: if the monitored operating parameters are within the operating parameter range, the operating status of the electronic water pump is determined to be a low-load state; if the monitored operating parameters are outside the operating parameter range, the operating status of the electronic water pump is determined to be a normal state, wherein the operating parameters corresponding to the electronic water pump in the normal state are greater than the operating parameters corresponding to the electronic water pump in the low-load state.

[0049] In some embodiments, the operating parameter range includes a control signal duty cycle of less than or equal to 50%.

[0050] Optionally, if the electronic water pump is operating in a low-load state, and the duration of the low-load state is greater than or equal to a low-load duration threshold, then the electronic water pump is controlled to switch from the working mode to the cleaning mode. This includes: if there are multiple low-load duration thresholds, obtaining the first number interval corresponding to each low-load duration threshold, wherein the low-load duration threshold and the first number interval are negatively correlated; if the electronic water pump is operating in a low-load state, recording the duration of the low-load state, and determining a first target threshold from each low-load duration threshold based on the matching result between the number of cleaning modes and each first number interval; if the duration of the state is greater than or equal to the first target threshold, then the electronic water pump is controlled to switch from the working mode to the cleaning mode, and the number of cleaning modes of the electronic water pump is increased.

[0051] In some embodiments, the low load duration thresholds are 1 hour and 3 hours. The first count interval corresponding to the low load duration threshold of 1 hour is when the number of cleaning modes is greater than 0, and the first count interval corresponding to the low load duration threshold of 3 hours is when the number of cleaning modes is equal to 0.

[0052] In some embodiments, combined with Figure 3 As shown, if the number of cleaning mode cycles is 0, it means that the electronic water pump has not yet entered the cleaning mode. After the electronic water pump runs continuously for 3 hours with the control signal duty cycle less than or equal to 50%, the electronic water pump is switched from the working mode to the cleaning mode, and the number of cleaning mode cycles is increased by 1. If the number of cleaning mode cycles is greater than 0, it means that the electronic water pump has entered the cleaning mode. After the electronic water pump runs continuously for 1 hour with the control signal duty cycle less than or equal to 50%, the electronic water pump is switched from the working mode to the cleaning mode, and the number of cleaning mode cycles is increased by 1.

[0053] In this way, since the cleaning mode requires increasing the operating parameters of the electronic water pump, the low load duration threshold for the first entry into the cleaning mode is set to be greater than the low load duration threshold for the second entry into the cleaning mode, thereby reducing the probability of the electronic water pump entering the cleaning mode for the first time and thus reducing the operating cost of the electronic water pump in the cleaning mode.

[0054] Optionally, the method further includes: acquiring multiple cleaning duration thresholds and second number intervals corresponding to each cleaning duration threshold, wherein the cleaning duration thresholds and the second number intervals are negatively correlated; if the electronic water pump is in cleaning mode, recording the cleaning mode duration of the electronic water pump in cleaning mode, and determining a second target threshold from each cleaning duration threshold based on the matching result between the number of cleaning modes and each second number threshold; if the cleaning mode duration is greater than or equal to the second target threshold, controlling the electronic water pump to switch from cleaning mode to working mode.

[0055] In some embodiments, the preset cleaning parameters include a control signal duty cycle of 100%.

[0056] In some embodiments, the cleaning duration thresholds include 2 minutes and 5 minutes, wherein the second interval corresponding to the cleaning duration threshold of 2 minutes is when the number of cleaning modes is greater than 1, and the second interval corresponding to the cleaning duration threshold of 5 minutes is when the number of cleaning modes is equal to 1.

[0057] In some embodiments, combined with Figure 3As shown, if the number of cleaning mode cycles is equal to 1, it means that the electronic water pump has entered the cleaning mode for the first time. The VCU controls the electronic water pump to run at a control signal duty cycle of 100% for 5 minutes to flush the water pump bearing. After flushing, the electronic water pump is controlled to switch from the cleaning mode to the working mode. If the number of cleaning mode cycles is greater than 1, it means that the electronic water pump has entered the cleaning mode again. The VCU controls the electronic water pump to run at a control signal duty cycle of 100% for 2 minutes to flush the water pump bearing. After flushing, the electronic water pump is controlled to switch from the cleaning mode to the working mode.

[0058] Optionally, obtaining multiple cleaning duration thresholds and the corresponding second-order intervals for each cleaning duration threshold includes: determining each first-order interval as a target interval; calculating the current total liquid flow rate based on the low-load duration threshold corresponding to the target interval, wherein the low-load parameter is within the operating parameter range; calculating the desired cleaning duration based on the current total liquid flow rate using the preset cleaning parameters; determining the desired cleaning duration as a cleaning duration threshold, and determining the target interval as the second-order interval corresponding to the desired cleaning duration.

[0059] In this way, as the number of cleaning modes increases, the low-load duration threshold is reduced, thereby gradually increasing the probability of the electronic water pump entering the cleaning mode. At the same time, the cleaning duration threshold also gradually decreases as the low-load duration threshold decreases. By flexibly controlling the duration of the electronic water pump in the cleaning mode, not only is the cleaning effect of the water pump bearing guaranteed, but the duration of the electronic water pump at high operating speed is also reduced, thus lowering the operating cost of the electronic water pump in the cleaning mode.

[0060] Combination Figure 4 As shown, this disclosure provides a bearing flushing method for an electronic water pump, including:

[0061] Step S401: In response to the power-on of the vehicle terminal, control the operating parameters of the electronic water pump according to the preset initial parameters, and record the initial control duration of the electronic water pump corresponding to the preset initial parameters.

[0062] Step S402: If the initial control duration is greater than or equal to the preset initial rinsing duration, the electronic water pump is controlled to enter the working mode, and the number of cleaning modes of the electronic water pump is set to the preset initial value.

[0063] Step S403: In response to the electronic water pump being in working mode, monitor the operating parameters of the electronic water pump and determine the low load duration threshold based on the number of cleaning modes.

[0064] Step S404: If the electronic water pump is in a low-load state and the duration of the low-load state is greater than or equal to the low-load duration threshold, then control the electronic water pump to switch from the working mode to the cleaning mode.

[0065] Step S405: In response to the electronic water pump being in cleaning mode, control the operating parameters of the electronic water pump according to preset cleaning parameters;

[0066] Step S406: Record the duration of the cleaning mode when the electronic water pump is in working mode, and determine the cleaning duration threshold based on the number of cleaning modes.

[0067] In step S407, if the cleaning mode duration is greater than or equal to the cleaning duration threshold, the electronic water pump is controlled to switch from the cleaning mode to the working mode, and the process jumps to step S403.

[0068] The bearing cleaning method for an electronic water pump provided in this disclosure determines the operating state of the electronic water pump by comparing the monitored operating parameters with the operating parameter range. If the electronic water pump is in a low-load state, and the duration of the low-load state is greater than or equal to a low-load duration threshold, then the operating parameters of the electronic water pump are controlled according to preset cleaning parameters to clean the water pump bearing. The preset cleaning parameters are greater than the operating parameters corresponding to the low-load state of the electronic water pump, which has the following advantages:

[0069] First, the electronic water pump is divided into a working mode and a cleaning mode. When the electronic water pump is in a low-load state for a long time, it is switched to the cleaning mode. By improving the operating parameters of the electronic water pump through preset cleaning parameters, the pump bearing is flushed. The flux residue in the coolant is carried away with the flushing, which avoids the accumulation of impurities in the coolant between the pump rotor and the pump bearing, reduces the occurrence of abnormal noise and blockage of the electronic water pump, and thus reduces the maintenance cost of the electronic water pump.

[0070] Second, after the vehicle terminal is powered on, the water pump bearing of the electronic water pump is flushed to remove the impurities that accumulated on the water pump bearing during the last use of the vehicle terminal. Then, the electronic water pump is controlled to enter the working mode to further improve the cleaning effect on the impurities on the water pump bearing.

[0071] Third, since the cleaning mode requires increasing the operating parameters of the electronic water pump, the low load duration threshold for the first entry into the cleaning mode is set to be greater than the low load duration threshold for the second entry into the cleaning mode, thereby reducing the probability of the electronic water pump entering the cleaning mode for the first time and thus reducing the operating cost of the electronic water pump in the cleaning mode.

[0072] Fourth, as the number of cleaning modes increases, the low-load duration threshold is reduced, thereby gradually increasing the probability of the electronic water pump entering the cleaning mode. At the same time, the cleaning duration threshold also gradually decreases as the low-load duration threshold decreases. By flexibly controlling the duration of the electronic water pump in the cleaning mode, not only is the cleaning effect of the water pump bearing guaranteed, but the duration of the electronic water pump at high operating speed is also reduced, thus lowering the operating cost of the electronic water pump in the cleaning mode.

[0073] Combination Figure 5 As shown, this embodiment of the present disclosure provides a bearing cleaning system for an electronic water pump, including an acquisition module 501, a working mode module 502, a conversion module 503, and a cleaning mode module 504.

[0074] The acquisition module 501 is used to acquire the operating parameter range and low load duration threshold corresponding to the electronic water pump.

[0075] The working mode module 502 is used to respond to the electronic water pump being in working mode, monitor the operating parameters of the electronic water pump, and determine the operating status of the electronic water pump based on the comparison results between the monitored operating parameters and the operating parameter range. The operating parameters include one or more of the following: control signal duty cycle, water pump liquid flow rate, and water pump speed.

[0076] The conversion module 503 is used to control the electronic water pump to switch from working mode to cleaning mode if the electronic water pump is in a low-load state and the duration of the low-load state is greater than or equal to the low-load duration threshold.

[0077] The cleaning mode module 504 is used to control the operating parameters of the electronic water pump according to preset cleaning parameters in response to the electronic water pump being in cleaning mode, so as to clean the water pump bearing of the electronic water pump. The preset cleaning parameters are greater than the operating parameters of the electronic water pump under low load.

[0078] The bearing cleaning system for an electronic water pump provided in this embodiment determines the operating state of the electronic water pump by comparing the monitored operating parameters with the operating parameter range. If the electronic water pump is in a low-load state, and the duration of the low-load state is greater than or equal to a low-load duration threshold, then the operating parameters of the electronic water pump are controlled according to preset cleaning parameters to clean the pump bearing. The preset cleaning parameters are greater than the operating parameters corresponding to the low-load state. This system divides the electronic water pump into a working mode and a cleaning mode. When the electronic water pump is in a low-load state for an extended period, it is switched to cleaning mode. By increasing the operating parameters of the electronic water pump through the preset cleaning parameters, the pump bearing is flushed. Flux residue in the coolant is carried away with the flushing, preventing impurities in the coolant from accumulating between the pump rotor and the pump bearing. This reduces the occurrence of abnormal noises and stalling in the electronic water pump, thereby lowering the maintenance cost.

[0079] This disclosure also provides a vehicle terminal, including: an electronic water pump, a processor, and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the vehicle terminal performs the above-described method.

[0080] Figure 6 A schematic diagram of a computer system suitable for implementing the vehicle terminal embodiments of this application is shown. It should be noted that... Figure 6 The computer system 600 of the vehicle terminal shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0081] like Figure 6 As shown, the computer system 600 includes a Central Processing Unit (CPU) 601, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on a program stored in Read-Only Memory (ROM) 602 or a program loaded from Storage Section 608 into Random Access Memory (RAM) 603. The RAM 603 also stores various programs and data required for system operation. The CPU 601, ROM 602, and RAM 603 are interconnected via a bus 604. An Input / Output (I / O) interface 605 is also connected to the bus 604.

[0082] The following components are connected to I / O interface 605: an input section 606 including a keyboard, mouse, etc.; an output section 607 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. Drive 160 is also connected to I / O interface 605 as needed. Removable media 611, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 160 as needed so that computer programs read from them can be installed into storage section 608 as needed.

[0083] The vehicle terminal disclosed in this embodiment includes a processor, a memory, a transceiver, and a communication interface. The memory and the communication interface are connected to the processor and the transceiver and complete communication between them. The memory is used to store computer programs, the communication interface is used to perform communication, and the processor and the transceiver are used to run the computer programs, so that the vehicle terminal performs the various steps of the above method.

[0084] This disclosure also provides a computer-readable storage medium storing computer-readable instructions that, when executed by a computer's processor, cause the computer to perform the above-described method.

[0085] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 609, and / or installed from removable medium 611. When the computer program is executed by central processing unit (CPU) 601, it performs various functions defined in the system of this application.

[0086] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0087] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and subsamples of some embodiments may be included in or replace parts and subsamples of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used herein means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated subsamples, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other subsamples, wholes, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes the element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0088] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software 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 the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0089] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely 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 system, or some sub-samples may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0090] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for cleaning bearings in an electronic water pump, characterized in that, include: Obtain the operating parameter range and low load duration threshold corresponding to the electronic water pump; In response to the electronic water pump being in working mode, the operating parameters of the electronic water pump are monitored, and the operating status of the electronic water pump is determined based on the comparison result between the monitored operating parameters and the operating parameter range. The operating parameters include one or more of the following: control signal duty cycle, water pump liquid flow rate, and water pump speed. If the electronic water pump is in a low-load state, and the duration of the low-load state is greater than or equal to the low-load duration threshold, then the electronic water pump is controlled to switch from the working mode to the cleaning mode. In response to the electronic water pump being in cleaning mode, the operating parameters of the electronic water pump are controlled according to preset cleaning parameters to clean the water pump bearing of the electronic water pump. The preset cleaning parameters are greater than the operating parameters of the electronic water pump under low load conditions.

2. The method according to claim 1, characterized in that, The method further includes: The electronic water pump is installed at the vehicle terminal; In response to the power-on of the vehicle terminal, the operating parameters of the electronic water pump are controlled according to the preset initial parameters, and the initial control duration of the electronic water pump corresponding to the preset initial parameters is recorded, wherein the preset initial parameters are greater than the operating parameters of the electronic water pump corresponding to the low load state. If the initial control duration is greater than or equal to the preset initial rinsing duration, the electronic water pump is controlled to enter the working mode, and the number of cleaning modes of the electronic water pump is set to the preset initial value.

3. The method according to claim 2, characterized in that, If the electronic water pump is operating in a low-load state, and the duration of the low-load state is greater than or equal to the low-load duration threshold, then the electronic water pump is controlled to switch from the working mode to the cleaning mode, including: If there are multiple low load duration thresholds, then obtain the first number interval corresponding to each low load duration threshold, wherein the low load duration threshold and the first number interval are negatively correlated. If the electronic water pump is in a low-load state, the duration of the electronic water pump being in a low-load state is recorded, and a first target threshold is determined from each of the low-load duration thresholds based on the matching results between the number of cleaning modes and each of the first number intervals. If the duration of the state is greater than or equal to the first target threshold, the electronic water pump is controlled to switch from the working mode to the cleaning mode, and the number of cleaning modes of the electronic water pump is increased.

4. The method according to claim 3, characterized in that, The method further includes: Multiple cleaning duration thresholds and second number intervals corresponding to each cleaning duration threshold are obtained, wherein the cleaning duration thresholds and the second number intervals are negatively correlated. If the electronic water pump is in cleaning mode, the cleaning mode duration of the electronic water pump in cleaning mode is recorded, and a second target threshold is determined from each of the cleaning duration thresholds based on the matching results between the number of cleaning modes and each of the second number intervals. If the duration of the cleaning mode is greater than or equal to the second target threshold, the electronic water pump is controlled to switch from the cleaning mode to the working mode.

5. The method according to claim 4, characterized in that, The operating status of the electronic water pump is determined based on the comparison between the monitored operating parameters and the operating parameter range, including: If the monitored operating parameters are within the range of the operating parameters, the operating status of the electronic water pump is determined to be a low-load state. If the monitored operating parameters are outside the range of operating parameters, the operating status of the electronic water pump is determined to be normal, wherein the operating parameters of the electronic water pump in the normal state are greater than the operating parameters of the electronic water pump in the low load state.

6. The method according to claim 5, characterized in that, Obtaining multiple cleaning duration thresholds and the second intervals corresponding to each cleaning duration threshold, including: Each of the first intervals of frequency is defined as the target interval; The preset low-load parameters are calculated based on the low-load duration threshold corresponding to the target interval to obtain the current total liquid flow rate, wherein the low-load parameters are within the operating parameter range; The desired cleaning time is obtained by calculating the current total liquid flow rate based on the preset cleaning parameters. The desired cleaning time is determined as a cleaning time threshold, and the target interval is determined as the second interval corresponding to the desired cleaning time.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The electronic water pump includes a pump rotor and a pump bearing; The liquid transported by the electronic water pump passes through the gap between the pump rotor and the pump bearing, and the gap distance is greater than the diameter of solid impurities in the liquid.

8. A bearing cleaning system for an electronic water pump, characterized in that, include: The acquisition module is used to acquire the operating parameter range and low load duration threshold corresponding to the electronic water pump; The working mode module is used to monitor the operating parameters of the electronic water pump in response to the electronic water pump being in working mode, and to determine the operating status of the electronic water pump based on the comparison result between the monitored operating parameters and the operating parameter range, wherein the operating parameters include one or more of the following: control signal duty cycle, water pump liquid flow rate, and water pump speed. The conversion module is used to control the electronic water pump to switch from working mode to cleaning mode if the electronic water pump is in a low-load state and the duration of the low-load state is greater than or equal to the low-load duration threshold. A cleaning mode module is used to control the operating parameters of the electronic water pump according to preset cleaning parameters in response to the electronic water pump being in cleaning mode, so as to clean the water pump bearing of the electronic water pump. The preset cleaning parameters are greater than the operating parameters of the electronic water pump corresponding to the low load state.

9. A vehicle terminal, characterized in that, include: Electronic water pumps, processors, and memory; The memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to cause the vehicle terminal to perform the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores computer-readable instructions that, when executed by the computer's processor, cause the computer to perform the method as described in any one of claims 1 to 7.

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