Idling detection method, device and equipment of vehicle electronic water pump and readable medium

Abstract

The embodiment of the invention provides an idling detection method, device and equipment for a vehicle electronic water pump and a readable medium, and is applied to a control system of the electronic water pump to obtain a preset motor rotating speed request of the electronic water pump sent by a vehicle control unit; if the power-on rotating speed specified by the motor rotating speed request meets the preset power-on condition, controlling a motor of the electronic water pump to perform power-on operation according to the power-on rotating speed, and determining that the working state of the electronic water pump is a power-on state; according to the power-on rotating speed, whether the electronic water pump in the power-on state meets a preset power-on detection condition or not is judged; if the electronic water pump does not meet the power-on detection condition, a motor of the electronic water pump in the power-on state is controlled to conduct power-on operation according to the preset power-on detection rotating speed; the electronic water pump is kept in the power-on state, idling detection is carried out on the electronic water pump, it is ensured that the control system of the electronic water pump can detect the power-on current of the motor of the electronic water pump, and whether the electronic water pump in the power-on state idles or not is detected.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to an idling detection method for a vehicle electronic water pump, an idling detection device for a vehicle electronic water pump, an electronic device, and a computer-readable medium. Background Art

[0002] When the electronic water pump is powered on and starts to run formally, the control system in the electronic water pump can obtain the real-time operating current of the electronic water pump motor, and compare the operating current with the normal current of the motor when the electronic water pump is in normal working state, so as to determine whether the electronic water pump is idling. However, the prior art does not determine whether the electronic water pump is idling when the electronic water pump is powered on, resulting in no measures being taken to solve the idling fault during the power-on process of the electronic water pump. If the electronic water pump is idling during the power-on process, especially when the water pump is not filled with antifreeze or other necessary working liquids, the bearings inside the electronic water pump will be in a "dry grinding" state due to the lack of liquid for lubrication and cooling. In this case, the bearings are prone to overheating, wear and even damage due to the lack of necessary lubrication. Summary of the invention

[0003] The embodiment of the present invention provides an idling detection method, device, equipment and computer-readable storage medium for a vehicle electronic water pump, so as to solve the problem that the prior art does not determine whether the electronic water pump is idling when the electronic water pump is powered on, resulting in no measures being taken to solve the idling fault during the power-on process of the electronic water pump, causing the electronic water pump to idle during the power-on process, especially when the water pump is not filled with antifreeze or other necessary working liquids, due to the lack of liquid for lubrication and cooling, the bearing inside the electronic water pump will be in a "dry grinding" state. In this case, the bearing is prone to overheating, wear and even damage due to the lack of necessary lubrication.

[0004] The embodiment of the present invention discloses an idling detection method for a vehicle electronic water pump, which is applied to a control system of the electronic water pump. The method includes:

[0005] Obtaining a motor speed request of the electronic water pump sent by a preset vehicle control unit;

[0006] If the power-on speed specified by the motor speed request meets the preset power-on condition, the motor of the electronic water pump is controlled to power on and run according to the power-on speed, and the working state of the electronic water pump is determined to be a power-on state;

[0007] According to the power-on speed, determining whether the electronic water pump in the power-on state meets a preset power-on detection condition;

[0008] If the electronic water pump does not meet the power-on detection condition, the motor of the electronic water pump in the power-on state is controlled to operate at a preset power-on detection speed;

[0009] The electronic water pump is kept in the powered-on state, and an idling detection is performed on the electronic water pump.

[0010] Optionally, the method comprises:

[0011] If the electronic water pump meets the power-on detection condition, the motor of the electronic water pump that maintains the power-on state is powered on and operates according to the power-on speed specified by the motor speed request.

[0012] Optionally, the step of performing idling detection on the electronic water pump while keeping the electronic water pump in the powered-on state includes:

[0013] Obtaining a power-on current of the motor, and determining whether the power-on current is less than a preset idling current;

[0014] If within a first preset time period, the duration during which the power-on current is less than the preset idling current reaches a first preset duration threshold, it is confirmed that the electronic water pump is idling.

[0015] Optionally, the working state also includes a running state; and the method includes:

[0016] When the working state of the electronic water pump is the running state, obtaining the running speed and the running current of the motor;

[0017] If the running speed of the motor meets the idling damage condition of the electronic water pump, determining whether the running current is less than the preset idling current;

[0018] If, within a second preset time period, the duration during which the operating current is less than the preset idling current reaches a second preset duration threshold, it is confirmed that the electronic water pump is idling.

[0019] Optionally, the method further comprises:

[0020] If the electronic water pump is idling, try to restart the electronic water pump to convert the idling electronic water pump into a normal state;

[0021] Recording the number of restarts of the electronic water pump;

[0022] If the restart times reaches a preset times threshold and the idling electronic water pump does not change to the normal state, controlling the electronic water pump to stop running;

[0023] The idling fault information of the electronic water pump is sent to the vehicle control unit.

[0024] Optionally, if the electronic water pump is idling, the step of attempting to restart the electronic water pump to convert the idling electronic water pump into a normal state includes:

[0025] If the electronic water pump is idling, try to restart the electronic water pump, and control the motor of the electronic water pump to run at a preset restart speed;

[0026] When the motor is running at the preset restart speed, it is determined whether the electronic water pump is idling according to the running current of the motor.

[0027] Optionally, during the process of the motor running at the preset restart speed, if the electronic water pump is idling, a difference between the running current of the motor and the preset idling current is greater than a preset threshold value.

[0028] The embodiment of the present invention further discloses an idling detection device for a vehicle electronic water pump, which is applied to a control system of the electronic water pump. The device comprises:

[0029] A motor speed request acquisition module, used to acquire a motor speed request of the electronic water pump sent by a preset vehicle control unit;

[0030] a first power-on operation module, configured to control the motor of the electronic water pump to perform power-on operation at the power-on speed if the power-on speed specified by the motor speed request meets a preset power-on condition, and determine that the working state of the electronic water pump is a power-on state;

[0031] A power-on detection condition judgment module, used to judge whether the electronic water pump in the power-on state meets a preset power-on detection condition according to the power-on speed;

[0032] A second power-on operation module, used for controlling the motor of the electronic water pump in the power-on state to perform power-on operation according to a preset power-on detection speed if the electronic water pump does not meet the power-on detection condition;

[0033] The maintaining module is used to maintain the electronic water pump in the powered-on state and perform idling detection on the electronic water pump.

[0034] Optionally, the device comprises:

[0035] The third power-on operation module is used for, if the electronic water pump meets the power-on detection condition, maintaining the motor of the electronic water pump in the power-on state to perform power-on operation according to the power-on speed specified by the motor speed request.

[0036] Optionally, the holding module includes:

[0037] An acquisition submodule, used for acquiring the power-on current of the motor and determining whether the power-on current is less than a preset idling current;

[0038] The confirmation submodule is used to confirm that the electronic water pump is idling if the duration during which the power-on current is less than the preset idling current reaches a first preset duration threshold within a first preset time period.

[0039] Optionally, the working state also includes a running state; and the device includes:

[0040] An acquisition module, used for acquiring the running speed and running current of the motor when the working state of the electronic water pump is the running state;

[0041] A judgment module, configured to judge whether the operating current is less than the preset idling current if the operating speed of the motor meets the idling damage condition of the electronic water pump;

[0042] The idling confirmation module is used to confirm that the electronic water pump is idling if the duration during which the operating current is less than the preset idling current reaches a second preset duration threshold within a second preset time period.

[0043] Optionally, the device further comprises:

[0044] A restart module, used for attempting to restart the electronic water pump if the electronic water pump is idling, so as to convert the idling electronic water pump into a normal state;

[0045] A recording module, used to record the number of restarts of the electronic water pump;

[0046] A stop operation control module, configured to control the electronic water pump to stop operating if the restart times reaches a preset times threshold and the idling electronic water pump does not change to the normal state;

[0047] The sending module is used to send the idling fault information of the electronic water pump to the vehicle control unit.

[0048] Optionally, the restart module includes:

[0049] A restart submodule, used for attempting to restart the electronic water pump if the electronic water pump is idling, and controlling the motor of the electronic water pump to run at a preset restart speed;

[0050] The judgment submodule is used to judge whether the electronic water pump is idling according to the running current of the motor when the motor is running at the preset restart speed.

[0051] Optionally, during the process of the motor running at the preset restart speed, if the electronic water pump is idling, a difference between the running current of the motor and the preset idling current is greater than a preset threshold value.

[0052] The embodiment of the present invention further discloses an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0053] The memory is used to store computer programs;

[0054] The processor is used to implement the method described in the embodiment of the present invention when executing the program stored in the memory.

[0055] The embodiment of the present invention further discloses one or more computer-readable media on which instructions are stored. When executed by one or more processors, the processors are enabled to execute the method described in the embodiment of the present invention.

[0056] The embodiments of the present invention include the following advantages:

[0057] In an embodiment of the present invention, a motor speed request of an electronic water pump sent by a preset vehicle control unit is obtained. If the power-on speed specified by the motor speed request meets the preset power-on condition, the motor of the electronic water pump is controlled to be powered on at the power-on speed, and the working state of the electronic water pump is determined to be a power-on state. According to the power-on speed, it is determined whether the electronic water pump in the power-on state meets the preset power-on detection condition. If the electronic water pump does not meet the power-on detection condition, the motor of the electronic water pump in the power-on state is controlled to be powered on at the preset power-on detection speed. Keeping the electronic water pump in the powered-on state and performing idling detection on the electronic water pump ensures that the control system of the electronic water pump can detect the power-on current of the electronic water pump motor, and realizes the detection of whether the electronic water pump in the powered-on state is idling, avoiding the problem of not detecting the idling of the electronic water pump during the power-on process and not taking measures to solve the idling fault problem. If the electronic water pump idles during the power-on process, especially when the water pump is not filled with antifreeze or other necessary working fluids, the bearings inside the electronic water pump will be in a "dry grinding" state due to lack of liquid for lubrication and cooling, and the bearings are prone to overheating, wear and even damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 is a flow chart of steps of an idling detection method for a vehicle electronic water pump provided in an embodiment of the present invention;

[0059] Figure 2 is a flowchart of the steps of another method for detecting idling of a vehicle electronic water pump provided by an embodiment of the present invention;

[0060] Figure 3 is a flowchart of the steps of another method for detecting idling of a vehicle electronic water pump provided by an embodiment of the present invention;

[0061] Figure 4 is a structural block diagram of an idling detection device for a vehicle electronic water pump provided in an embodiment of the present invention;

[0062] Figure 5 is a block diagram of an electronic device provided in an embodiment of the present invention;

[0063] Figure 6 is a schematic diagram of a computer-readable medium provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0064] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] To facilitate understanding of the technical solutions and technical effects of the embodiments of the present invention, the prior art of the present invention is briefly described below.

[0066] When the electronic water pump is powered on and starts to run formally, the control system in the electronic water pump can obtain the real-time operating current of the electronic water pump motor, and compare the operating current with the normal current of the motor when the electronic water pump is in normal working state, so as to determine whether the electronic water pump is idling. However, the prior art does not determine whether the electronic water pump is idling when the electronic water pump is powered on, resulting in no measures being taken to solve the idling fault during the power-on process of the electronic water pump. If the electronic water pump is idling during the power-on process, especially when the water pump is not filled with antifreeze or other necessary working liquids, the bearings inside the electronic water pump will be in a "dry grinding" state due to the lack of liquid for lubrication and cooling. In this case, the bearings are prone to overheating, wear and even damage due to the lack of necessary lubrication.

[0067] In the prior art, the method for determining whether a formally operating electronic water pump is idling is as follows: when the electronic water pump is idling, the operating current of the electronic water pump motor will increase. Therefore, if the operating current is greater than the normal current, the control system of the electronic water pump will determine that the electronic water pump is in an idling state. Once idling is detected, the control system will begin to continuously report idling fault information to the VCU (Vehicle Control Unit) and try to restart the water pump to restore the idling electronic water pump to a normal working state. If the restart is successful, the water pump will return to a normal working state, and the control system will stop reporting idling fault information. If the restart fails, indicating that the idling fault has not been resolved, the control system will control the water pump to stop running to prevent further damage to the electronic water pump, and continue to report idling fault information.

[0068] However, if the electronic water pump is not used for a long time, air may accumulate in the pump to form bubbles. When the electronic water pump starts working, these bubbles will increase the running current of the water pump motor, which may cause false alarm of idling fault, thus affecting the accurate monitoring and data analysis of the electronic water pump idling fault.

[0069] Reference Figure 1 , shows a flowchart of the steps of an idling detection method of a vehicle electronic water pump provided in an embodiment of the present invention, which is applied to the control system of the electronic water pump and may specifically include the following steps:

[0070] Step 101, obtaining a motor speed request of the electronic water pump sent by a preset vehicle control unit;

[0071] In an embodiment of the present invention, a vehicle may include an electronic water pump and a vehicle control unit. The electronic water pump is part of the vehicle cooling system and is used to circulate coolant to maintain a suitable operating temperature of the vehicle engine and other heat sources. The vehicle control unit can monitor and control the electronic water pump to ensure that it runs at a suitable speed, thereby maintaining the optimal operating state of the engine cooling system. The electronic water pump includes a control system, which can be a control chip that can control the operation of the electronic water pump.

[0072] In the embodiment of the present invention, the vehicle control unit may send a motor speed request to the electronic water pump to control the motor of the electronic water pump to start powering on and running.

[0073] Step 102, if the power-on speed specified by the motor speed request meets the preset power-on condition, the motor of the electronic water pump is controlled to power on and run at the power-on speed, and the working state of the electronic water pump is determined to be a power-on state;

[0074] In an embodiment of the present invention, the electronic water pump can receive a motor speed request sent by a vehicle control unit. If the power-on speed specified by the motor speed request meets the preset power-on condition of the electronic water pump, the control system of the electronic water pump can control the motor of the electronic water pump to power on and run according to the power-on speed, and confirm that the working state of the electronic water pump is the power-on state. Specifically, the preset power-on condition can be that the power-on speed specified by the motor speed request sent by the vehicle control unit is a non-zero speed.

[0075] Step 103, judging whether the electronic water pump in the powered-on state meets a preset power-on detection condition according to the power-on speed;

[0076] In an embodiment of the present invention, the control system of the electronic water pump controls the motor of the electronic water pump to power on and run according to the power-on speed specified by the motor speed request, and after determining that the working state of the electronic water pump is the power-on state, the control system of the electronic water pump needs to determine whether the electronic water pump that is powered on and running according to the power-on speed specified by the motor speed request meets the preset power-on detection condition of the electronic water pump to adjust the power-on speed of the motor. Specifically, if the electronic water pump in the power-on state meets the power-on detection condition of the electronic water pump, the control system of the electronic water pump can detect the power-on current of the motor of the electronic water pump in the power-on state, and determine whether the electronic water pump is idling based on the power-on current. If the electronic water pump in the power-on state does not meet the power-on detection condition of the electronic water pump, the control system of the electronic water pump cannot detect the power-on current of the motor of the electronic water pump in the power-on state.

[0077] Step 104, if the electronic water pump does not meet the power-on detection condition, controlling the motor of the electronic water pump in the power-on state to operate at a preset power-on detection speed;

[0078] In an embodiment of the present invention, the control system of the electronic water pump controls the motor of the electronic water pump to power on and operate at the power-on speed specified by the motor speed request, and after determining that the working state of the electronic water pump is the power-on state, the control system of the electronic water pump can determine whether the electronic water pump in the power-on state meets the power-on detection conditions of the electronic water pump, and adjust the power-on speed of the motor to ensure that the control system of the electronic water pump can detect the power-on current of the motor.

[0079] The power-on detection condition may be that the power-on speed specified by the motor speed request is not less than a preset power-on detection speed. If the power-on speed specified by the motor speed request is not less than the power-on detection speed, when the motor runs at the power-on speed specified by the motor speed request, the control system of the electronic water pump can detect the power-on current of the electronic water pump motor. If the power-on speed specified by the motor speed request is less than the power-on detection speed, when the motor runs at the power-on speed specified by the motor speed request, the control system of the electronic water pump cannot detect the power-on current of the electronic water pump motor. Specifically, the power-on detection speed may be 3000rpm (Revolutions Per Minute), 3500rpm, 4000rpm, etc., and the present invention does not limit this.

[0080] In an embodiment of the present invention, if the electronic water pump in the powered-on state does not meet the power-on detection conditions, that is, the power-on speed specified by the motor speed request is less than the power-on detection speed, the control system of the electronic water pump controls the motor of the electronic water pump to power on and operate according to the power-on detection speed.

[0081] Step 105 , maintaining the electronic water pump in the powered-on state, and performing an idling detection on the electronic water pump.

[0082] In the implementation of the present invention, after the control system of the electronic water pump controls the motor of the electronic water pump to power on and run according to the power-on detection speed, the electronic water pump is kept in the power-on running state, and the idling detection of the electronic water pump is performed. Specifically, the control system of the electronic water pump can obtain the power-on current of the motor of the electronic water pump, and judge whether the electronic water pump in the power-on state is idling based on the power-on current.

[0083] In an embodiment of the present invention, a motor speed request of an electronic water pump sent by a preset vehicle control unit is obtained. If the power-on speed specified by the motor speed request meets the preset power-on condition, the motor of the electronic water pump is controlled to be powered on at the power-on speed, and the working state of the electronic water pump is determined to be a power-on state. According to the power-on speed, it is determined whether the electronic water pump in the power-on state meets the preset power-on detection condition. If the electronic water pump does not meet the power-on detection condition, the motor of the electronic water pump in the power-on state is controlled to be powered on at the preset power-on detection speed. Keeping the electronic water pump in the powered-on state and performing idling detection on the electronic water pump ensures that the control system of the electronic water pump can detect the power-on current of the electronic water pump motor, and realizes the detection of whether the electronic water pump in the powered-on state is idling, avoiding the problem of not detecting the idling of the electronic water pump during the power-on process and not taking measures to solve the idling fault problem. If the electronic water pump idles during the power-on process, especially when the water pump is not filled with antifreeze or other necessary working fluids, the bearings inside the electronic water pump will be in a "dry grinding" state due to lack of liquid for lubrication and cooling, and the bearings are prone to overheating, wear and even damage.

[0084] Furthermore, in any of the above embodiments, the method includes:

[0085] Sub-step S11 : if the electronic water pump meets the power-on detection condition, the motor of the electronic water pump that maintains the power-on state is powered on and operates according to the power-on speed specified by the motor speed request.

[0086] In an embodiment of the present invention, the control system of the electronic water pump can first control the motor of the electronic water pump to power on and run according to the power-on speed specified by the motor speed request, and confirm that the working state of the electronic water pump is the power-on state. Then, the control system of the electronic water pump can determine whether the electronic water pump in the power-on state meets the power-on detection condition of the electronic water pump. If the power-on detection condition is met, that is, the power-on speed specified by the motor speed request is not less than the power-on detection speed, the control system of the electronic water pump can detect the power-on current of the motor of the electronic water pump. The control system of the electronic water pump can keep the motor in a state of powering on and running according to the power-on speed specified by the motor speed request, and perform idling detection on the electronic water pump.

[0087] In the embodiment of the present invention, if the electronic water pump meets the power-on detection conditions, the motor of the electronic water pump is maintained in a state of power-on operation according to the power-on speed specified by the motor speed request, and the electronic water pump is detected to be idling, thereby ensuring that the control system of the electronic water pump can detect the power-on current of the motor of the electronic water pump, and realizing the detection of whether the electronic water pump in the powered-on state is idling, thereby avoiding the problem of not detecting the idling of the electronic water pump during the power-on process and not taking measures to solve the idling fault, which makes the bearings prone to overheating, wear and even damage.

[0088] Further, in any of the above embodiments, step 105 includes:

[0089] Sub-step S21, obtaining the power-on current of the motor, and determining whether the power-on current is less than a preset idling current;

[0090] Sub-step S22: if within a first preset time period, the duration during which the power-on current is less than the preset idling current reaches a first preset duration threshold, it is confirmed that the electronic water pump is idling.

[0091] In the embodiment of the present invention, when the motor of the electronic water pump is in a state of being powered on and running according to the power-on detection speed, or in a state of being powered on and running according to the power-on speed specified by the motor speed request, the power-on current of the motor is obtained to determine whether the power-on current is less than the preset idling current. If the duration of the power-on current being less than the preset idling current reaches a first preset duration threshold within a first preset time period, it is confirmed that the electronic water pump in the powered-on state is idling.

[0092] In a specific example, the first preset time period may be 3 seconds, the first preset time threshold may be 2 seconds, and the preset idling current may be 0.55 A. If the motor of the electronic water pump is in a state of being powered on and running according to the power-on detection speed, or in a state of being powered on and running according to the power-on speed specified by the motor speed request, the power-on current of the motor of the electronic water pump satisfies that the accumulated power-on current for 2 seconds within 3 seconds is less than 0.55 A, then it is confirmed that the electronic water pump in the powered-on state is idling.

[0093] In an embodiment of the present invention, when the electronic water pump is in a power-on state, the power-on current of the motor is obtained, and it is determined whether the power-on current is less than a preset idling current; if within a first preset time period, the duration during which the power-on current is less than the preset idling current reaches a first preset time threshold, it is confirmed that the electronic water pump is idling, thereby realizing the judgment of whether the electronic water pump in the power-on state is idling, and avoiding the problem of the electronic water pump idling during the power-on process and damaging the bearings.

[0094] Further, in any of the above embodiments, the working state also includes a running state; and the method includes:

[0095] Sub-step S31, when the working state of the electronic water pump is the running state, obtaining the running speed and running current of the motor;

[0096] Sub-step S32, if the running speed of the motor meets the idling damage condition of the electronic water pump, determining whether the running current is less than the preset idling current;

[0097] Sub-step S33: if within a second preset time period, the duration during which the operating current is less than the preset idling current reaches a second preset duration threshold, it is confirmed that the electronic water pump is idling.

[0098] In the embodiment of the present invention, the working state of the electronic water pump includes a power-on state and a running state. After the power-on process of the electronic water pump is completed, the electronic water pump enters the running state.

[0099] When the working state of the electronic water pump is the running state, the running speed and running current of the motor of the electronic water pump are obtained. If the running speed of the motor of the electronic water pump does not meet the idling damage condition of the electronic water pump, the electronic water pump idling at the running speed will not be damaged. Among them, the idling damage condition can be that the running speed of the motor of the electronic water pump is not less than the idling damage speed. If the running speed of the motor is less than the idling damage speed, the electronic water pump idling at the running speed will not be damaged. If the running speed of the motor is not less than the idling damage speed, the electronic water pump idling at the running speed will be damaged. Specifically, the idling damage speed can be 2500rpm, 3000rpm, 3500rpm, etc., and the present invention is not limited to this.

[0100] In an embodiment of the present invention, if the running speed of the motor of the electronic water pump meets the idling damage condition of the electronic water pump, the control system of the electronic water pump can determine whether the running current of the motor is less than the preset idling current. If the duration of the running current of the motor less than the preset idling current reaches the second preset duration threshold within the second preset time period, the control system of the electronic water pump confirms that the electronic water pump is idling.

[0101] In a specific example, the idling damage speed is 3000 rpm, the second preset time period may be 3s, the second preset duration threshold may be 2s, and the preset idling current may be 0.55A. When the working state of the electronic water pump is the running state, if the running speed of the motor is not less than 3000 rpm, it is determined whether the electronic water pump is idling. If the running current of the motor of the electronic water pump satisfies the running current of less than 0.55A accumulated within 3S for 2s, the control system of the electronic water pump confirms that the electronic water pump is idling.

[0102] In an embodiment of the present invention, when the working state of the electronic water pump is the running state, the running speed and running current of the motor are obtained. If the running speed of the motor meets the idling damage condition of the electronic water pump, it is determined whether the running current is less than the preset idling current. If the duration of the running current being less than the preset idling current reaches the second preset duration threshold within the second preset time period, it is confirmed that the electronic water pump is idling, avoiding the practice of judging that the electronic water pump is in an idling state only based on the running current exceeding the normal current value, thereby reducing the problem of false alarm idling fault caused by the increase of the motor running current due to bubbles in the electronic water pump, and achieving more accurate detection of whether the electronic water pump is idling.

[0103] Furthermore, in any of the above embodiments, the method further includes:

[0104] Sub-step S41, if the electronic water pump is idling, try to restart the electronic water pump to convert the idling electronic water pump into a normal state;

[0105] Sub-step S42, recording the number of restarts of the electronic water pump;

[0106] Sub-step S43, if the restart times reaches a preset times threshold and the idling electronic water pump does not change to the normal state, controlling the electronic water pump to stop running;

[0107] Sub-step S44, sending the idling fault information of the electronic water pump to the vehicle control unit.

[0108] In an embodiment of the present invention, if the control system of the electronic water pump confirms that the electronic water pump is idling, the control system of the electronic water pump will not immediately send the idling fault information of the electronic water pump to the vehicle control unit. The control system of the electronic water pump may first try to restart the electronic water pump in an attempt to convert the idling electronic water pump to a normal state by restarting. The control system of the electronic water pump may control the electronic water pump to restart multiple times and record the number of restarts of the electronic water pump. If the number of restarts of the electronic water pump reaches a preset number threshold, and the restarts of the electronic water pump have not converted the idling electronic water pump to a normal state, the electronic water pump is controlled to stop running and the idling fault information of the electronic water pump is sent to the vehicle control unit. The vehicle control unit may receive and analyze the idling fault information of the electronic water pump. Among them, the preset number threshold may be 15 times, 20 times, 25 times, etc., and the present invention is not limited to this.

[0109] In an embodiment of the present invention, if the electronic water pump is idling, an attempt is made to restart the electronic water pump to convert the idling electronic water pump to a normal state. The number of restarts of the electronic water pump is recorded. If the number of restarts reaches a preset number threshold and the idling electronic water pump has not been converted to a normal state, the electronic water pump is controlled to stop running to prevent further damage to the electronic water pump, and the idling fault information of the electronic water pump is sent to the vehicle control unit, so that after the idling phenomenon is detected, the idling fault information is not immediately sent to the vehicle control unit, but the electronic water pump is first tried to be restarted. If the number of restarts reaches a preset number threshold and the electronic water pump fails to return to a normal state, the idling fault information will be transmitted to the vehicle control unit at this time, reducing the false alarm of the idling fault of the electronic water pump caused by accidental factors and improving the accuracy and reliability of the idling detection of the electronic water pump.

[0110] Further, in any of the above embodiments, sub-step S41 includes:

[0111] Sub-step S51, if the electronic water pump is idling, try to restart the electronic water pump, and control the motor of the electronic water pump to run at a preset restart speed;

[0112] Sub-step S52, during the process of the motor running at the preset restart speed, determining whether the electronic water pump is idling according to the running current of the motor.

[0113] In an embodiment of the present invention, if the control system of the electronic water pump confirms that the electronic water pump is idling, the control system of the electronic water pump may attempt to restart the electronic water pump to try to change the idling electronic water pump to a normal state by restarting. After the electronic water pump is restarted, when the working state of the electronic water pump enters the running state, the control system of the electronic water pump may control the motor of the electronic water pump to run at a preset restart speed. The preset restart speed is not less than the idling damage speed.

[0114] When the motor is running at the preset restart speed, the control system of the electronic water pump needs to determine whether the electronic water pump is idling. If the duration of the running current of the motor running at the preset restart speed being less than the preset idling current reaches the second preset time threshold within the second preset time period, the control system of the electronic water pump confirms that the electronic water pump is idling.

[0115] In an embodiment of the present invention, if the electronic water pump is idling, an attempt is made to restart the electronic water pump, and the motor of the electronic water pump is controlled to run at a preset restart speed. During the process of the motor running at the preset restart speed, it is determined whether the electronic water pump is idling based on the operating current of the motor, thereby resolving the idling of the electronic water pump caused by accidental factors through restarting, and determining whether the electronic water pump is idling after restarting.

[0116] Further, in any of the above embodiments, during the operation of the motor at the preset restart speed, if the electronic water pump is idling, a difference between the operating current of the motor and the preset idling current is greater than a preset threshold.

[0117] In an embodiment of the present invention, if the control system of the electronic water pump confirms that the electronic water pump is idling, the control system of the electronic water pump may attempt to restart the electronic water pump in an attempt to transform the idling electronic water pump into a normal state by restarting. After the electronic water pump is restarted, when the working state of the electronic water pump enters the running state, the control system of the electronic water pump may control the motor of the electronic water pump to run at a preset restart speed. Among them, the preset restart speed is not less than the idling damage speed. Moreover, in the process of the motor running at the preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than the preset threshold value, that is, the difference between the running current of the motor and the preset idling current is large.

[0118] In a specific example, the preset idling current of the motor is 0.55A. When the motor is running at a preset restart speed of 4000rpm, if the electronic water pump is idling, the running current of the motor is 0.3A. When the motor is running at a preset restart speed of 3000rpm, if the electronic water pump is idling, the running current of the motor is 0.5A. The difference between 0.55A and 0.3A is greater than the difference between 0.55A and 0.5A. After the electronic water pump is restarted, if the motor runs at a preset restart speed of 4000rpm, the control system of the electronic water pump is not prone to the problem of false alarm of electronic water pump idling fault.

[0119] In an embodiment of the present invention, when the motor is running at a preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than the preset threshold value, thereby widening the difference between the running current of the electronic water pump when idling and the preset idling current, and reducing the problem of false alarm of the electronic water pump idling fault.

[0120] Reference Figure 2 , shows a flowchart of the steps of another method for detecting idling of a vehicle electronic water pump provided by an embodiment of the present invention, which may specifically include the following steps:

[0121] Step 201, run detection.

[0122] When the working state of the electronic water pump is the running state, the running speed and the running current of the motor are obtained.

[0123] Step 202, determine whether the running speed of the water pump motor is not less than 3000 rpm. If yes, proceed to step 203; if not, do not make an idling determination.

[0124] The control system of the electronic water pump determines whether the running speed of the motor of the electronic water pump is not less than the idling damage speed. If the running speed of the motor is less than the idling damage speed, the electronic water pump idling at this running speed will not be damaged, and no idling judgment is made. If the running speed of the motor is not less than the idling damage speed, the electronic water pump idling at this running speed will be damaged. Specifically, the idling damage speed can be 3000rpm.

[0125] Step 203 , determine whether the operating current is less than 0.55A (accumulated for more than 2 seconds within 3 seconds). If so, proceed to step 204 .

[0126] If the duration of the motor's running current being less than the preset idling current reaches a second preset duration threshold within the second preset time period, the control system of the electronic water pump confirms that the electronic water pump is idling. The second preset time period may be 3s, the second preset duration threshold may be 2s, and the preset idling current may be 0.55A.

[0127] Step 204, trigger idling and enter the restart logic.

[0128] If the control system of the electronic water pump determines that the electronic water pump is idling, the control system of the electronic water pump may attempt to restart the electronic water pump to attempt to convert the idling electronic water pump into a normal state through restarting.

[0129] Step 205: the water pump adjusts its speed to 3200 rpm.

[0130] After the electronic water pump is restarted, when the working state of the electronic water pump enters the running state, the control system of the electronic water pump can control the motor of the electronic water pump to run at a preset restart speed. During the process of the motor running at the preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than the preset threshold. The preset restart speed can be 3200rpm.

[0131] Step 206 , determine whether the operating current is less than 0.55A (accumulated for more than 2 seconds within 3 seconds). If so, proceed to step 207 .

[0132] When the motor is running at the preset restart speed, the control system of the electronic water pump needs to determine whether the electronic water pump is idling. If the duration of the running current of the motor running at the preset restart speed being less than the preset idling current reaches the second preset time threshold within the second preset time period, the control system of the electronic water pump confirms that the electronic water pump is idling.

[0133] Step 207: The restart count is incremented by one.

[0134] Step 208, whether the cumulative number of restarts reaches 20. If not, proceed to step 205. If yes, proceed to step 209.

[0135] If the restart times of the electronic water pump do not reach the preset times threshold, the electronic water pump may be restarted again to try to convert the idling electronic water pump into a normal state. The preset times threshold may be 20 times.

[0136] Step 209: the water pump stops and reports an idling fault.

[0137] If the restart times of the electronic water pump reaches a preset threshold, and the restarts of the electronic water pump have not converted the idling electronic water pump to a normal state, the electronic water pump is controlled to stop running, and the idling fault information of the electronic water pump is sent to the vehicle control unit.

[0138] Reference Figure 3 , shows a flowchart of the steps of another method for detecting idling of a vehicle electronic water pump provided by an embodiment of the present invention, which may specifically include the following steps:

[0139] Step 301: power-on detection.

[0140] Step 302, whether the power-on speed specified by the motor speed request of the water pump is not less than 3500 rpm. If not, the water pump adjusts the power-on speed to 3500 rpm for power-on operation. If yes, execute step 303.

[0141] Get the motor speed request of the electronic water pump sent by the preset vehicle control unit. If the power-on speed specified by the motor speed request is less than the power-on detection speed, the control system of the electronic water pump cannot detect the power-on current of the electronic water pump motor, and the control system of the electronic water pump controls the motor of the electronic water pump to power on and run according to the power-on detection speed. If the power-on speed specified by the motor speed request is not less than the power-on detection speed, the motor of the electronic water pump that remains powered on will power on and run according to the power-on speed specified by the motor speed request. The power-on detection speed can be 3500rpm.

[0142] Step 303, determine whether the power-on current is less than 0.55A (accumulated for more than 2 seconds within 3 seconds). If so, proceed to step 307. If not, the water pump is normal.

[0143] The power-on current of the motor is obtained, and it is determined whether the power-on current is less than the preset idling current; if the duration of the power-on current being less than the preset idling current reaches the first preset duration threshold within the first preset time period, it is confirmed that the electronic water pump is idling. The first preset time period may be 3s, the first preset duration threshold may be 2s, and the preset idling current may be 0.55A.

[0144] Step 304, run the test.

[0145] When the working state of the electronic water pump is the running state, the running speed and the running current of the motor are obtained.

[0146] Step 305, determine whether the running speed of the water pump motor is not less than 3000 rpm. If yes, proceed to step 306; if not, do not make an idling determination.

[0147] The control system of the electronic water pump determines whether the running speed of the motor of the electronic water pump is not less than the idling damage speed. If the running speed of the motor is less than the idling damage speed, the electronic water pump idling at this running speed will not be damaged, and no idling judgment is made. If the running speed of the motor is not less than the idling damage speed, the electronic water pump idling at this running speed will be damaged. Specifically, the idling damage speed can be 3000rpm.

[0148] Step 306, determine whether the operating current is less than 0.55A (accumulated for more than 2 seconds within 3 seconds). If so, proceed to step 307. If not, the water pump is normal.

[0149] If the duration of the motor's running current being less than the preset idling current reaches a second preset duration threshold within the second preset time period, the control system of the electronic water pump confirms that the electronic water pump is idling. The second preset time period may be 3s, the second preset duration threshold may be 2s, and the preset idling current may be 0.55A.

[0150] Step 307, trigger idling and enter the restart logic.

[0151] If the control system of the electronic water pump determines that the electronic water pump is idling, the control system of the electronic water pump may attempt to restart the electronic water pump to attempt to convert the idling electronic water pump into a normal state through restarting.

[0152] Step 308: the water pump adjusts its speed to 4000 rpm.

[0153] After the electronic water pump is restarted, when the working state of the electronic water pump enters the running state, the control system of the electronic water pump can control the motor of the electronic water pump to run at a preset restart speed. During the process of the motor running at the preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than a preset threshold. The preset restart speed can be 4000rpm.

[0154] Step 309, determine whether the operating current is less than 0.55A (accumulated for more than 2 seconds within 3 seconds). If so, proceed to step 310. If not, the water pump is normal.

[0155] When the motor is running at the preset restart speed, the control system of the electronic water pump needs to determine whether the electronic water pump is idling. If the duration of the running current of the motor running at the preset restart speed being less than the preset idling current reaches the second preset time threshold within the second preset time period, the control system of the electronic water pump confirms that the electronic water pump is idling.

[0156] Step 310: The restart count is incremented by one.

[0157] Step 311, whether the cumulative number of restarts reaches 20. If not, proceed to step 308. If yes, proceed to step 312.

[0158] If the restart times of the electronic water pump do not reach the preset times threshold, the electronic water pump may be restarted again to try to convert the idling electronic water pump into a normal state. The preset times threshold may be 20 times.

[0159] Step 312: the water pump stops and reports an idling fault.

[0160] If the restart times of the electronic water pump reaches a preset threshold, and the restarts of the electronic water pump have not converted the idling electronic water pump to a normal state, the electronic water pump is controlled to stop running, and the idling fault information of the electronic water pump is sent to the vehicle control unit.

[0161] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0162] Reference Figure 4 , shows a structural block diagram of an idling detection device for a vehicle electronic water pump provided in an embodiment of the present invention, which is applied to a control system of an electronic water pump and may specifically include the following modules:

[0163] A motor speed request acquisition module 401 is used to acquire a motor speed request of the electronic water pump sent by a preset vehicle control unit;

[0164] A first power-on operation module 402 is used to control the motor of the electronic water pump to perform power-on operation according to the power-on speed if the power-on speed specified by the motor speed request meets the preset power-on condition, and determine that the working state of the electronic water pump is a power-on state;

[0165] A power-on detection condition judgment module 403 is used to judge whether the electronic water pump in the power-on state meets a preset power-on detection condition according to the power-on speed;

[0166] A second power-on operation module 404 is used to control the motor of the electronic water pump in the power-on state to perform power-on operation according to a preset power-on detection speed if the electronic water pump does not meet the power-on detection condition;

[0167] The maintaining module 405 is used to maintain the electronic water pump in the powered-on state and perform an idling detection on the electronic water pump.

[0168] In an optional embodiment of the present invention, the device comprises:

[0169] The third power-on operation module is used for, if the electronic water pump meets the power-on detection condition, maintaining the motor of the electronic water pump in the power-on state to perform power-on operation according to the power-on speed specified by the motor speed request.

[0170] In an optional embodiment of the present invention, the holding module includes:

[0171] An acquisition submodule, used for acquiring the power-on current of the motor and determining whether the power-on current is less than a preset idling current;

[0172] The confirmation submodule is used to confirm that the electronic water pump is idling if the duration during which the power-on current is less than the preset idling current reaches a first preset duration threshold within a first preset time period.

[0173] In an optional embodiment of the present invention, the working state also includes a running state; the device includes:

[0174] An acquisition module, used for acquiring the running speed and running current of the motor when the working state of the electronic water pump is the running state;

[0175] A judgment module, configured to judge whether the operating current is less than the preset idling current if the operating speed of the motor meets the idling damage condition of the electronic water pump;

[0176] The idling confirmation module is used to confirm that the electronic water pump is idling if the duration during which the operating current is less than the preset idling current reaches a second preset duration threshold within a second preset time period.

[0177] In an optional embodiment of the present invention, the device further comprises:

[0178] A restart module, used for attempting to restart the electronic water pump if the electronic water pump is idling, so as to convert the idling electronic water pump into a normal state;

[0179] A recording module, used to record the number of restarts of the electronic water pump;

[0180] A stop operation control module, configured to control the electronic water pump to stop operating if the restart times reaches a preset times threshold and the idling electronic water pump does not change to the normal state;

[0181] The sending module is used to send the idling fault information of the electronic water pump to the vehicle control unit.

[0182] In an optional embodiment of the present invention, the restart module includes:

[0183] A restart submodule, used for attempting to restart the electronic water pump if the electronic water pump is idling, and controlling the motor of the electronic water pump to run at a preset restart speed;

[0184] The judgment submodule is used to judge whether the electronic water pump is idling according to the running current of the motor when the motor is running at the preset restart speed.

[0185] In an optional embodiment of the present invention, during the process of the motor running at the preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than a preset threshold.

[0186] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0187] In addition, an embodiment of the present invention further provides an electronic device, such as Figure 5 As shown, it includes a processor 501, a communication interface 502, a memory 503 and a communication bus 504, wherein the processor 501, the communication interface 502, and the memory 503 communicate with each other through the communication bus 504.

[0188] Memory 503, used for storing computer programs;

[0189] The processor 501 is used to execute the program stored in the memory 503, and implements the following steps:

[0190] Obtaining a motor speed request of the electronic water pump sent by a preset vehicle control unit;

[0191] If the power-on speed specified by the motor speed request meets the preset power-on condition, the motor of the electronic water pump is controlled to power on and run at the power-on speed, and the working state of the electronic water pump is determined to be a power-on state;

[0192] According to the power-on speed, determining whether the electronic water pump in the power-on state meets a preset power-on detection condition;

[0193] If the electronic water pump does not meet the power-on detection condition, the motor of the electronic water pump in the power-on state is controlled to operate at a preset power-on detection speed;

[0194] The electronic water pump is kept in the powered-on state, and an idling detection is performed on the electronic water pump.

[0195] In an optional embodiment of the present invention, the method includes:

[0196] If the electronic water pump meets the power-on detection condition, the motor of the electronic water pump that maintains the power-on state is powered on and operates according to the power-on speed specified by the motor speed request.

[0197] In an optional embodiment of the present invention, the step of maintaining the electronic water pump in the powered-on state and performing idling detection on the electronic water pump comprises:

[0198] Obtaining a power-on current of the motor, and determining whether the power-on current is less than a preset idling current;

[0199] If within a first preset time period, the duration during which the power-on current is less than the preset idling current reaches a first preset duration threshold, it is confirmed that the electronic water pump is idling.

[0200] In an optional embodiment of the present invention, the working state also includes a running state; and the method includes:

[0201] When the working state of the electronic water pump is the running state, obtaining the running speed and the running current of the motor;

[0202] If the running speed of the motor meets the idling damage condition of the electronic water pump, determining whether the running current is less than the preset idling current;

[0203] If, within a second preset time period, the duration during which the operating current is less than the preset idling current reaches a second preset duration threshold, it is confirmed that the electronic water pump is idling.

[0204] In an optional embodiment of the present invention, the method further includes:

[0205] If the electronic water pump is idling, try to restart the electronic water pump to convert the idling electronic water pump into a normal state;

[0206] Recording the number of restarts of the electronic water pump;

[0207] If the restart times reaches a preset times threshold and the idling electronic water pump does not change to the normal state, controlling the electronic water pump to stop running;

[0208] The idling fault information of the electronic water pump is sent to the vehicle control unit.

[0209] In an optional embodiment of the present invention, if the electronic water pump is idling, the step of attempting to restart the electronic water pump and converting the idling electronic water pump into a normal state comprises:

[0210] If the electronic water pump is idling, try to restart the electronic water pump, and control the motor of the electronic water pump to run at a preset restart speed;

[0211] When the motor is running at the preset restart speed, it is determined whether the electronic water pump is idling according to the running current of the motor.

[0212] In an optional embodiment of the present invention, during the process of the motor running at the preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than a preset threshold.

[0213] The communication bus mentioned in the above terminal can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0214] The communication interface is used for communication between the above terminal and other devices.

[0215] The memory may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0216] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0217] like Figure 6 As shown, in another embodiment provided by the present invention, a computer-readable storage medium 601 is also provided, in which instructions are stored. When the computer-readable storage medium is run on a computer, the computer executes the idling detection method for a vehicle electronic water pump described in the above embodiment.

[0218] In another embodiment provided by the present invention, a computer program product including instructions is also provided. When the computer program product is run on a computer, the computer executes the idling detection method for a vehicle electronic water pump described in the above embodiment.

[0219] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk Solid State Disk (SSD)), etc.

[0220] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0221] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0222] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A method for detecting idling of a vehicle electronic water pump, characterized in that: The control system is applied to an electronic water pump, and the method comprises: Obtaining a motor speed request of the electronic water pump sent by a preset vehicle control unit; If the power-on speed specified by the motor speed request meets the preset power-on condition, the motor of the electronic water pump is controlled to power on and run according to the power-on speed, and the working state of the electronic water pump is determined to be a power-on state; According to the power-on speed, determining whether the electronic water pump in the power-on state meets a preset power-on detection condition; If the electronic water pump does not meet the power-on detection condition, the motor of the electronic water pump in the power-on state is controlled to operate at a preset power-on detection speed; The electronic water pump is kept in the powered-on state, and an idling detection is performed on the electronic water pump.

2. The method according to claim 1, characterized in that The method comprises: If the electronic water pump meets the power-on detection condition, the motor of the electronic water pump that maintains the power-on state is powered on and operates according to the power-on speed specified by the motor speed request.

3. The method according to claim 2, characterized in that The step of maintaining the electronic water pump in the powered-on state and performing idling detection on the electronic water pump comprises: Obtaining a power-on current of the motor, and determining whether the power-on current is less than a preset idling current; If within a first preset time period, the duration during which the power-on current is less than the preset idling current reaches a first preset duration threshold, it is confirmed that the electronic water pump is idling.

4. The method according to claim 3, characterized in that The working state also includes an operating state; the method includes: When the working state of the electronic water pump is the running state, obtaining the running speed and the running current of the motor; If the running speed of the motor meets the idling damage condition of the electronic water pump, determining whether the running current is less than the preset idling current; If, within a second preset time period, the duration during which the operating current is less than the preset idling current reaches a second preset duration threshold, it is confirmed that the electronic water pump is idling.

5. The method according to claim 3 or 4, characterized in that: The method further comprises: If the electronic water pump is idling, try to restart the electronic water pump to convert the idling electronic water pump into a normal state; Recording the number of restarts of the electronic water pump; If the restart times reaches a preset times threshold and the idling electronic water pump does not change to the normal state, controlling the electronic water pump to stop running; The idling fault information of the electronic water pump is sent to the vehicle control unit.

6. The method according to claim 5, characterized in that If the electronic water pump is idling, the steps of attempting to restart the electronic water pump and converting the idling electronic water pump into a normal state include: If the electronic water pump is idling, try to restart the electronic water pump, and control the motor of the electronic water pump to run at a preset restart speed; When the motor is running at the preset restart speed, it is determined whether the electronic water pump is idling according to the running current of the motor.

7. The method according to claim 6, characterized in that During the process that the motor runs at the preset restart speed, if the electronic water pump is idling, the difference between the running current of the motor and the preset idling current is greater than a preset threshold value.

8. An idling detection device for a vehicle electronic water pump, characterized in that: A control system applied to an electronic water pump, the device comprising: A motor speed request acquisition module, used to acquire a motor speed request of the electronic water pump sent by a preset vehicle control unit; a first power-on operation module, configured to control the motor of the electronic water pump to perform power-on operation at the power-on speed if the power-on speed specified by the motor speed request meets a preset power-on condition, and determine that the working state of the electronic water pump is a power-on state; A power-on detection condition judgment module, used to judge whether the electronic water pump in the power-on state meets a preset power-on detection condition according to the power-on speed; A second power-on operation module, used for controlling the motor of the electronic water pump in the power-on state to perform power-on operation according to a preset power-on detection speed if the electronic water pump does not meet the power-on detection condition; The maintaining module is used to maintain the electronic water pump in the powered-on state and perform idling detection on the electronic water pump.

9. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; The memory is used to store computer programs; The processor is used to implement the method according to any one of claims 1 to 7 when executing the program stored in the memory.

10. One or more computer-readable media having instructions stored thereon, which when executed by one or more processors cause the processors to perform the method according to any one of claims 1 to 7.

Images