Electronic water pump detection method, apparatus and device, and readable storage medium and program product

Abstract

An electronic water pump idling detection method, apparatus and device, and a readable storage medium and a program product. The detection method comprises: when it is detected that an electronic water pump is in an idling state, controlling the electronic water pump to alternately operate at different rotating speeds within a first preset duration (S100); and at the end of the first preset duration, if it is re-detected that the electronic water pump is in the idling state, perform idling fault warning (S200). By means of the detection method, apparatus and device, and the readable storage medium and the program product, the accuracy of idling detection is improved.

Description

Electronic water pump detection method, device, equipment, readable storage medium and program product CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 2023115384499 filed on November 17, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of vehicle technology, and in particular to an electronic water pump idling detection method, device, equipment, readable storage medium, and program product. Background Art

[0003] The electronic water pump is an important component of the automobile cooling system. Its main function is to drive the coolant circulation, absorb excess heat from the engine and other components, and transfer it to the outside air through the heat dissipation device.

[0004] In related technologies, electronic water pumps can become idling when there's a water source cutoff, a clogged pump inlet, or air trapped in the system. Simply put, the electronic water pump can't pump water properly during operation. Because the idling pump can't generate effective pumping pressure, negative pressure builds up inside the pump, ultimately damaging it. Summary of the Invention

[0005] The present disclosure provides an electronic water pump idling detection method, apparatus, device, readable storage medium, and program product, which improve the accuracy of idling detection by utilizing one or more embodiments of the present disclosure.

[0006] In a first aspect, an embodiment of the present disclosure provides an electronic water pump idling detection method, the electronic water pump idling detection method comprising: when the electronic water pump is detected to be in an idling state, controlling the electronic water pump to operate alternately at different speeds within a first preset time period; and after the first preset time period ends, if the electronic water pump is detected to be in an idling state again, an idling fault warning is issued.

[0007] In the second aspect, an embodiment of the present disclosure provides an electronic water pump idling detection device, which includes: a control module, which is used to control the electronic water pump to operate alternately at different speeds within a first preset time period when it is detected that the electronic water pump is in an idling state; and an early warning module, which is used to issue an idling fault early warning if the electronic water pump is detected to be in an idling state again after the first preset time period ends.

[0008] In a third aspect, an embodiment of the present disclosure provides an electronic water pump idling detection device, which includes a processor, a memory, and an electronic water pump idling detection program stored in the memory and executable by the processor, wherein when the electronic water pump idling detection program is executed by the processor, the steps of the aforementioned electronic water pump idling detection method are implemented.

[0009] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, on which an electronic water pump idling detection program is stored, wherein when the electronic water pump idling detection program is executed by a processor, the steps of the aforementioned electronic water pump idling detection method are implemented.

[0010] In a fifth aspect, the present disclosure provides a computer program product, which includes computer instructions, which are stored in a computer-readable storage medium and are suitable for being read and executed by a processor, so that a computer device having the processor executes the above-mentioned electronic water pump idling detection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a flow chart of a method for detecting idling of an electronic water pump according to some embodiments of the present disclosure;

[0012] FIG2 is a flow chart of a method for detecting idling of an electronic water pump according to other embodiments of the present disclosure;

[0013] FIG3 is a schematic diagram of rotational speed changes during idling detection according to an embodiment of the present disclosure;

[0014] FIG4 is a schematic diagram showing the corresponding relationship among current threshold, duty cycle and air moisture content according to an embodiment of the present disclosure;

[0015] FIG5 is a schematic diagram of functional modules of an electronic water pump idling detection device according to an embodiment of the present disclosure; and

[0016] FIG6 is a schematic diagram of the hardware structure of the electronic water pump idling detection device involved in the embodiment of the present disclosure. DETAILED DESCRIPTION

[0017] To help those skilled in the art better understand the present disclosure, the following will provide a clear and complete description of the technical solutions in the embodiments of the present disclosure, in conjunction with the accompanying drawings. It is clear that the described embodiments are only a portion of the embodiments of the present disclosure, not all of them. All other embodiments derived by those skilled in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0018] In the prior art, when electronic water pumps perform idle self-tests during self-protection, they are often prone to false idle detections due to occasional continuous bubbles passing through the electronic water pump. Therefore, effectively preventing the impact of bubbles on the electronic water pump's idle detection and improving its accuracy is a pressing issue.

[0019] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0020] In a first aspect, an embodiment of the present disclosure provides a method for detecting idling of an electronic water pump.

[0021] In some embodiments, referring to FIG1 , the electronic water pump idling detection method includes: step S100: when the electronic water pump is detected to be in an idling state, controlling the electronic water pump to operate alternately at different speeds within a first preset time period; and step S200: after the first preset time period ends, if the electronic water pump is detected to be in an idling state again, an idling fault warning is issued.

[0022] Referring to Figure 2, which is a flow chart illustrating a method for detecting an electronic water pump idling according to an embodiment of the present disclosure, the method includes the following steps: Step S10: When the electronic water pump is detected to be idling, controlling the electronic water pump to alternately operate at a first speed and a second speed for a first preset duration, wherein the first speed is greater than the second speed.

[0023] In some embodiments, the electronic water pump operates as follows: an ECU (Electronic Control Unit) adjusts the duty cycle via PWM (Pulse Width Modulation) based on feedback signals such as water temperature, transmitting the signal to a controller within the electronic water pump. This allows the controller to control the motor's rotation based on the duty cycle, thereby driving the impeller rotor to rotate and thereby achieving coolant circulation. It is understood that if problems such as a water source cutoff, a blockage in the pump's water inlet, or air in the system occur during this process, the electronic water pump will idle. Since an idling electronic water pump cannot generate effective pumping pressure, negative pressure will form within the pump, ultimately damaging the pump. Therefore, an idling test of the electronic water pump is necessary.

[0024] In some embodiments, as shown in FIG3 , when the electronic water pump detects idling, it is first controlled to shut down and wait for N seconds before restarting. If idling is still detected at this time, it is controlled to shut down and wait for M seconds before restarting. It should be noted that the specific values ​​of the shutdown waiting times N and M can be determined according to actual needs and are not limited here. For example, N is 1 second and M is 5 seconds.

[0025] In some embodiments, after the electronic water pump is restarted, the speed of the electronic water pump can be reduced from the initial high speed to the first speed and run at the first speed for K seconds; then reduced to the second speed and run at the second speed for L seconds; then increased to the first speed again and continued to run for K seconds; then reduced to the second speed and continued to run for L seconds, and so on and so forth until the first preset time is reached. It should be noted that the specific value settings of the running time K, L and the first preset time can be determined according to actual needs and are not limited here. For example, K is 10 seconds, L is also 10 seconds, and the first preset time is set to 30 minutes. In addition, the initial high speed is usually 5500 rpm, and the specific value settings of the first speed and the second speed can be determined according to actual needs, as long as the first speed is greater than the second speed, for example, the first speed is 4200 rpm and the second speed is 2000 rpm.

[0026] It should be understood that when the electronic water pump alternates between the first and second speeds, it will continuously oscillate internally, which facilitates the expulsion of continuous bubbles within the electronic water pump. Therefore, if the electronic water pump falsely detects idling due to the presence of continuous bubbles, the electronic water pump can be controlled to cycle between 2000 rpm and 4200 rpm for 30 minutes to expel the continuous bubbles, thereby preventing the bubbles from affecting the idling detection of the electronic water pump and enabling accurate idling detection.

[0027] It is understandable that when a conventional electronic water pump detects idling, it stops, causing the vehicle system flow rate to almost zero, which in turn causes the temperature of cooling system components to rise rapidly, damaging the cooling function of the cooling system components and rendering the vehicle inoperable. However, in this embodiment, when the electronic water pump is detected to be in an idling state, the electronic water pump does not stop. Instead, the electronic water pump is controlled to switch between 2000 rpm and 4200 rpm, thereby ensuring normal operation of the electronic water pump. This ensures that the flow rate within the vehicle system remains within a certain range while expelling bubbles, even if the water content within the pipeline meets the minimum cooling capacity requirement. This prevents the cooling function of the cooling system components from being damaged, thereby ensuring normal system operation.

[0028] Step S20: After the first preset time period ends, if it is detected again that the electronic water pump is in an idling state, a first level idling fault warning is issued.

[0029] In some embodiments, if continuous bubbles exist in the electronic water pump, the continuous bubbles within the electronic water pump are expelled through the oscillating motion after the electronic water pump is controlled to alternate between a first speed and a second speed for a first predetermined period of time, thereby preventing the bubbles from affecting the electronic water pump's idling detection. If the electronic water pump is still detected to be idling at this time, it indicates that the electronic water pump is indeed idling, rather than a false idling detection due to occasional bubbles. Therefore, the electronic water pump can be accurately determined to be idling and a first-level idling fault warning can be issued. It should be noted that the first level in this embodiment indicates that the electronic water pump has an idling fault, but no repair is required.

[0030] In some embodiments, the first speed continuously runs for K seconds and the second speed continuously runs for L seconds, which can remain unchanged or change, and are not limited here. It is understandable that during the first preset time period, the motor speed can include the above-mentioned two different first speeds and second speeds, which does not mean that there are only the first speed and the second speed. In some examples, it can also include at least one other speed different from the first speed and the second speed. Therefore, the above-mentioned electronic water pump idling detection method can include, when it is detected that the electronic water pump is in an idling state, controlling the electronic water pump to operate alternately at different speeds within a first preset time period, and after the first preset time period ends, if the electronic water pump is again detected to be in an idling state, an idling fault warning is issued.

[0031] In some embodiments, this embodiment can not only effectively avoid the influence of bubbles on the idling detection of the electronic water pump, thereby improving the accuracy of idling detection and effectively reducing the frequency of idling fault reporting, but also realize the maintenance of the cooling function of the entire vehicle.

[0032] In some embodiments, before the step of detecting that the electronic water pump is in an idling state, it also includes: when it is detected that the first real-time current corresponding to the electronic water pump at a first speed is less than or equal to the first current threshold corresponding to the first speed, determining whether the second real-time current corresponding to the electronic water pump at a second speed is less than or equal to the second current threshold corresponding to the second speed; if so, determining that the electronic water pump is in an idling state; if not, determining that the electronic water pump is in a non-idling state.

[0033] It should be understood that there is a mapping relationship between the speed and duty cycle of the electronic water pump; and the speed, current, and air moisture content are directly proportional. In other words, the higher the speed (i.e., duty cycle), the greater the current, and the greater the air moisture content, the greater the current, and the less likely the electronic water pump will idle. Therefore, in this embodiment, a mapping relationship between the speed (i.e., duty cycle) and current thresholds at different air moisture contents is constructed as shown in Figure 4. It should be noted that the specific values ​​of the first and second current thresholds can be determined according to actual needs and are not limited here. It is understood that when the air moisture content is less than 60% (i.e., the minimum moisture content allowed in the water system), it will be detrimental to the operation of the electronic water pump. Therefore, in this embodiment, the current value corresponding to the first speed at an air moisture content of 60% is preferably used as the first current threshold, and the current value corresponding to the second speed at an air moisture content of 60% is used as the second current threshold.

[0034] In some embodiments, before triggering the idling detection of the electronic water pump, it is necessary to first determine whether the first real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold. If not, it means that the electronic water pump is in a non-idling state and normal instruction operation can be maintained.

[0035] In some embodiments, if the first real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold, it is necessary to continue to determine whether the second real-time current corresponding to the electronic water pump at the second speed is less than or equal to the second current threshold; if so, it is determined that the electronic water pump is in an idling state, thereby triggering the detection of the idling of the electronic water pump; if not, it is determined that the electronic water pump is in a non-idling state, and normal instruction operation is maintained.

[0036] In some embodiments, after the step of re-detecting that the electronic water pump is in an idling state, the method further includes:

[0037] The electronic water pump is controlled to operate alternately at a first speed and a second speed within a second preset time period; after the second preset time period, if the electronic water pump is still detected to be in an idling state, the electronic water pump is determined to be idling and a second level of idling fault warning is issued, and the level of the second level is higher than the level of the first level.

[0038] In some embodiments, the specific value setting of the second preset time length can be determined according to actual needs and is not limited here. It can be the same as the first preset time length or different. For example, the second preset time length is set to 30 minutes.

[0039] In some embodiments, after the electronic water pump runs alternately at the first speed and the second speed for a first preset period of time, if it is still detected that the electronic water pump is in an idling state, the electronic water pump will be controlled again to run alternately at the first speed and the second speed for a second preset period of time, and after the second preset period of time, it will continue to determine whether the electronic water pump is still in an idling state; while ensuring that the entire vehicle system runs at a certain flow rate, it realizes secondary verification of the idling detection results to ensure the accuracy of the idling detection.

[0040] In some embodiments, if the electronic water pump is still detected to be idling after the second preset time period, it is determined that the electronic water pump is indeed idling and a second level idling fault warning is issued. It should be noted that the second level is higher than the first level and not only indicates that the electronic water pump has an idling fault, but also requires maintenance of the electronic water pump.

[0041] In some embodiments, the method may further include: if it is detected that the electronic water pump is in a non-idling state, determining that the electronic water pump is not idling.

[0042] In some embodiments, after alternating high and low speed operation for a first preset time or a second preset time, if the electronic water pump is detected to be in a non-idling state, it means that the previous idling of the electronic water pump was caused by the presence of occasional bubbles, and then a false detection problem occurred, that is, the previous detection result of the idling operation of the electronic water pump was inaccurate. At this time, it will be re-determined that the electronic water pump is not idling to ensure that the electronic water pump can continue to operate normally, thereby effectively realizing the coolant circulation.

[0043] In some embodiments, after the step after the first preset time period or the second preset time period, it also includes: when it is detected that the third real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold corresponding to the first speed, determining whether the fourth real-time current corresponding to the electronic water pump at the second speed is less than or equal to the second current threshold corresponding to the second speed; if so, determining that the electronic water pump is re-detected to be in an idling state; if not, determining that the electronic water pump is detected to be in a non-idling state.

[0044] In some embodiments, when it is detected that a third real-time current corresponding to the electronic water pump at a first speed is greater than a first current threshold corresponding to the first speed, it is determined that the electronic water pump is detected to be in a non-idling state.

[0045] In some embodiments, after the electronic water pump runs alternately at the first speed and the second speed for the first preset time or the second preset time, it is necessary to determine whether the electronic water pump is in an idling state based on the third real-time current corresponding to the first speed, the fourth real-time current corresponding to the second speed, and the current threshold.

[0046] Since the method, process and principle for idling state judgment in this embodiment are the same, for the sake of simplicity of description, the following will be explained by taking the idling state judgment after the first preset time as an example: determine whether the third real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold. If not, it means that the electronic water pump is in a non-idling state, then the electronic water pump is controlled to enter the speed regulation operation mode to control the electronic water pump normally.

[0047] In some embodiments, if the third real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold, it is necessary to continue to determine whether the fourth real-time current corresponding to the electronic water pump at the second speed is less than or equal to the second current threshold; if so, it is determined that the electronic water pump is in an idling state; if not, it means that the electronic water pump is in a non-idling state, and the electronic water pump is controlled to enter the speed regulation operation mode to perform normal control of the electronic water pump.

[0048] In some embodiments, the first current threshold and the second current threshold are both less than 0.3A.

[0049] It is understandable that during the idling self-test of a traditional electronic water pump, if a series of occasional continuous bubbles pass through, the electronic water pump current will be detected as less than 0.35A, causing the water pump impeller to stop rotating. If the current is still abnormal after three consecutive restarts within 15 seconds, the electronic water pump will be directly judged to be idling and a signal will be sent to the ECU via the PWM signal interface to output an idling fault of the electronic water pump. It is understandable that this idling is caused by the presence of unstable bubbles, not true idling. This shows that when performing the idling self-test, the traditional electronic water pump does not eliminate the influence of unstable bubbles on idling, resulting in the problem of false idling detection.

[0050] In order to eliminate the problem of false detection of water pump idling due to bubbles, this embodiment will lower the current threshold of the electronic water pump, that is, adjust the current threshold to less than 0.3A, thereby increasing the volume of bubbles that can be accommodated in the electronic water pump, that is, allowing a certain amount of bubbles to flow through the electronic water pump to avoid the influence of unstable bubbles on idling detection; in other words, when there are a certain amount of bubbles flowing through the electronic water pump, the idling problem will not be falsely detected, thereby reducing the probability of false alarm of electronic water pump idling.

[0051] In a second aspect, an embodiment of the present disclosure further provides an electronic water pump idling detection device.

[0052] In some embodiments, referring to FIG5 , FIG5 is a schematic diagram of the functional modules of an electronic water pump idling detection device according to an embodiment of the present disclosure. As shown in FIG5 , the electronic water pump idling detection device includes: a control module, which is configured to, upon detecting that the electronic water pump is idling, control the electronic water pump to alternately operate at different speeds for a first preset duration; and a warning module, which is configured to issue an idling fault warning if the electronic water pump is again detected to be idling after the first preset duration.

[0053] In some embodiments, the control module is further configured to, upon detecting that the electronic water pump is idling, control the electronic water pump to alternately operate at a first speed and a second speed for a first preset duration, wherein the first speed is greater than the second speed. The warning module is further configured to, upon re-detection of the electronic water pump idling after the first preset duration, issue a first level idling fault warning.

[0054] In some embodiments, the above-mentioned device may further include a detection module, which is used to: when it is detected that the first real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold corresponding to the first speed, determine whether the second real-time current corresponding to the electronic water pump at the second speed is less than or equal to the second current threshold corresponding to the second speed; if so, determine that the electronic water pump is in an idling state; if not, determine that the electronic water pump is in a non-idling state.

[0055] In some embodiments, the control module is also used to control the electronic water pump to operate alternately at a first speed and a second speed within a second preset time period; the early warning module is also used to, after the second preset time period ends, if the electronic water pump is still detected to be in an idling state, determine that the electronic water pump is idling and perform a second level of idling fault warning, and the level of the second level is higher than the level of the first level.

[0056] In some embodiments, the detection module is further configured to: if it is detected that the electronic water pump is in a non-idling state, determine that the electronic water pump is not idling.

[0057] In some embodiments, the detection module is also used to: when it is detected that the third real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold corresponding to the first speed, determine whether the fourth real-time current corresponding to the electronic water pump at the second speed is less than or equal to the second current threshold corresponding to the second speed; if so, determine that the electronic water pump is re-detected to be in an idling state; if not, determine that the electronic water pump is detected to be in a non-idling state.

[0058] In some embodiments, the first current threshold and the second current threshold are both less than 0.3A.

[0059] In some embodiments, the detection module is further configured to determine that the electronic water pump is in a non-idling state when it is detected that a third real-time current corresponding to the electronic water pump at the first speed is greater than a first current threshold corresponding to the first speed.

[0060] It can be understood that the functional implementation of each module in the above-mentioned electronic water pump idling detection device corresponds to the various steps in the above-mentioned electronic water pump idling detection method embodiment, and their functions and implementation processes will not be repeated here one by one.

[0061] In a third aspect, an embodiment of the present disclosure provides an electronic water pump idling detection device, which may be a device with data processing capabilities such as a PC (personal computer), a laptop computer, or a server.

[0062] 6 , which is a schematic diagram of the hardware structure of an electronic water pump idling detection device according to an embodiment of the present disclosure, the electronic water pump idling detection device may include a processor, a memory, a communication interface, and a communication bus.

[0063] In some embodiments, the communication bus can be of any type that interconnects the processor, memory, and communication interface.

[0064] Communication interfaces include I / O (Input / Output) interfaces, physical interfaces, and logical interfaces, which are used to interconnect components within the electronic water pump idling detection device, as well as interfaces used to interconnect the electronic water pump idling detection device with other devices (such as other computing devices or user devices). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user devices can be displays, keyboards, etc.

[0065] The memory can be various types of storage media, such as RAM (Random Access Memory), ROM (Read-Only Memory), NVRAM (Non-Volatile RAM), flash memory, optical storage, hard disk, programmable ROM (PROM), EPROM (Erasable PROM), EEPROM (Electrically Erasable PROM), etc.

[0066] The processor may be a general-purpose processor that can call an electronic water pump idling detection program stored in a memory and execute the electronic water pump idling detection method provided by the embodiments of the present disclosure. For example, the general-purpose processor may be a CPU (Central Processing Unit). The method executed when the electronic water pump idling detection program is called may refer to the various embodiments of the electronic water pump idling detection method disclosed herein and will not be further described here.

[0067] Those skilled in the art will understand that the hardware structure shown in FIG6 does not constitute a limitation to the present disclosure, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0068] In a fourth aspect, an embodiment of the present disclosure also provides a computer-readable storage medium.

[0069] The readable storage medium of the present invention stores an electronic water pump idling detection program, wherein when the electronic water pump idling detection program is executed by the processor, the steps of the electronic water pump idling detection method as described above are implemented.

[0070] Among them, the method implemented when the electronic water pump idling detection program is executed can refer to the various embodiments of the electronic water pump idling detection method disclosed in the present invention, and will not be repeated here.

[0071] In a fifth aspect, the present disclosure provides a computer program product, which includes computer instructions, which are stored in a computer-readable storage medium and are suitable for being read and executed by a processor, so that a computer device having the processor executes the above-mentioned electronic water pump idling detection method.

[0072] It should be noted that the serial numbers of the above-mentioned embodiments of the present disclosure are only for description and do not represent the advantages or disadvantages of the embodiments.

[0073] The terms "including" and "having" and any variations thereof in the specification and claims of the present disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to be different types.

[0074] In the description of the embodiments of the present disclosure, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of the present disclosure should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0075] In the description of the embodiments of the present disclosure, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present disclosure, “multiple” refers to two or more than two.

[0076] In some processes described in the embodiments of the present disclosure, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present disclosure or may be executed in parallel. The sequence numbers of the operations are only used to distinguish different operations and the sequence numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0077] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course, by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present disclosure.

[0078] The above are only preferred embodiments of the present disclosure and are not intended to limit the patent scope of the present disclosure. Any equivalent structure or equivalent process transformation made using the contents of the present disclosure and the drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present disclosure.

Claims

1. A method for detecting idling of an electronic water pump, comprising: When it is detected that the electronic water pump is in an idling state, controlling the electronic water pump to alternately operate at different speeds within a first preset time period; as well as After the first preset time period has expired, if the electronic water pump is detected again to be in an idling state, an idling fault warning is issued.

2. The detection method according to claim 1, wherein When it is detected that the electronic water pump is in an idling state, controlling the electronic water pump to alternately operate at different speeds within a first preset time period includes: When it is detected that the electronic water pump is in an idling state, the electronic water pump is controlled to operate alternately at a first speed and a second speed within a first preset time period.

3. The detection method according to claim 2, wherein: The first rotation speed is greater than the second rotation speed.

4. The detection method according to claim 2, wherein: After the first preset time period has ended, if the electronic water pump is detected to be in an idling state again, an idling fault warning is performed, including: After the first preset time period has expired, if the electronic water pump is detected again to be in an idling state, a first level idling fault warning is issued.

5. The detection method according to claim 1, wherein Before the step of detecting that the electronic water pump is in an idling state, the method further includes: When it is detected that the real-time current corresponding to the electronic water pump at the current speed is less than or equal to the current threshold corresponding to the current speed, it is determined that the electronic water pump is in an idling state.

6. The detection method according to claim 3, wherein: Before the step of detecting that the electronic water pump is in an idling state, the method further includes: When it is detected that the first real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold corresponding to the first speed, it is determined that the electronic water pump is in an idling state.

7. The detection method according to claim 3, wherein: Before the step of detecting that the electronic water pump is in an idling state, the method further includes: When it is detected that a first real-time current corresponding to the electronic water pump at a first speed is less than or equal to a first current threshold corresponding to the first speed, determining whether a second real-time current corresponding to the electronic water pump at a second speed is less than or equal to a second current threshold corresponding to the second speed; If yes, it is determined that the electronic water pump is in an idling state.

8. The detection method according to claim 6 or 7, further comprising: If not, it is determined that the electronic water pump is in a non-idling state.

9. The detection method according to claim 4, wherein: After the step of re-detecting that the electronic water pump is in an idling state, the method further includes: Controlling the electronic water pump to alternately operate at different speeds within a second preset time period; and After the second preset time period, if the electronic water pump is still detected to be in an idling state, the electronic water pump is determined to be idling and a second level of idling fault warning is issued, and the second level is higher than the first level.

10. The detection method according to claim 4, wherein: After the step of re-detecting that the electronic water pump is in an idling state, the method further includes: Controlling the electronic water pump to operate alternately at a first speed and a second speed within a second preset time period; and After the second preset time period, if the electronic water pump is still detected to be in an idling state, the electronic water pump is determined to be idling and a second level of idling fault warning is issued, and the second level is higher than the first level.

11. The detection method according to any one of claims 5 to 8, further comprising: If it is detected that the electronic water pump is in a non-idling state, it is determined that the electronic water pump is not idling.

12. The detection method according to claim 9 or 10, wherein: After the step of after the first preset time period or after the second preset time period, the method further includes: When it is detected that the third real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold corresponding to the first speed, it is determined that the electronic water pump is re-detected to be in the idling state.

13. The detection method according to claim 12, further comprising: When it is detected that the third real-time current corresponding to the electronic water pump at the first speed is less than or equal to the first current threshold corresponding to the first speed, determining whether the fourth real-time current corresponding to the electronic water pump at the second speed is less than or equal to the second current threshold corresponding to the second speed; If so, it is determined that the electronic water pump is detected to be in an idling state again.

14. The detection method according to claim 13, further comprising: If not, it is determined that the electronic water pump is detected to be in a non-idling state.

15. The detection method according to claim 7 or 13, wherein: The first current threshold and the second current threshold are both less than 0.3A.

16. The detection method according to claim 9 or 10, wherein: After the step of after the first preset time period or after the second preset time period, the method further includes: When it is detected that the third real-time current corresponding to the electronic water pump at the first speed is greater than the first current threshold corresponding to the first speed, it is determined that the electronic water pump is detected to be in a non-idling state.

17. An electronic water pump idling detection device, comprising: A control module, which is used to control the electronic water pump to alternately operate at different speeds within a first preset time period when it is detected that the electronic water pump is in an idling state; as well as The early warning module is used to issue an idling fault early warning if the electronic water pump is detected to be in an idling state again after the first preset time period has ended.

18. An electronic water pump idling detection device, characterized in that: The electronic water pump idling detection device includes a processor, a memory, and an electronic water pump idling detection program stored in the memory and executable by the processor, wherein when the electronic water pump idling detection program is executed by the processor, the steps of the detection method as described in any one of claims 1 to 8 are implemented.

19. A computer-readable storage medium, comprising a detection program stored thereon, wherein when the electronic water pump idling detection program is executed by a processor, the steps of the detection method according to any one of claims 1 to 8 are implemented.

20. A computer program product, comprising computer instructions, the computer instructions being stored in a computer-readable storage medium and being suitable for being read and executed by a processor, so as to enable a computer device having the processor to perform the detection method according to any one of claims 1 to 8.

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