Hybrid vehicle control method, device, terminal and medium

Abstract

The application belongs to the technical field of automobile control, and particularly relates to a control method and device of a hybrid automobile, a terminal and a medium. The control method of the hybrid automobile comprises the following steps: monitoring the water content of engine oil in a crankcase; comparing the water content of the engine oil with a first water content threshold; when the water content of the engine oil is higher than the first water content threshold, adjusting the power mode of the hybrid automobile to an engine direct drive mode, in which the driving motor does not drive the hybrid automobile, and the hybrid automobile is driven by the engine only. In this way, the application does not need to increase the hardware cost and other complex changes to the structure of the automobile, and adjusts the power mode of the hybrid automobile according to the water content of the engine oil during the use of the hybrid automobile to achieve the purpose of water removal of the engine oil, thereby improving the emulsification of the engine oil of the hybrid automobile.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile control, and in particular to a control method and device for a hybrid automobile, a terminal and a medium. BACKGROUND

[0002] At present, the hybrid automobile may be started multiple times and run for a short time in a low-temperature environment or in some road types of driving conditions. The engine is often stopped running when the engine oil temperature or water temperature has not been raised to a certain value, which causes water vapor from other sources such as piston blow-by to easily condense and enter the engine oil, thereby causing the problem of engine oil emulsification. In severe cases, the engine oil emulsification problem may even cause the engine oil to deteriorate and the lubricating ability to deteriorate, accelerating the wear and corrosion of the engine during operation.

[0003] Therefore, how to improve the engine oil emulsification of the hybrid automobile is a difficult problem to be solved in the current automobile technical field. SUMMARY

[0004] The main purpose of the present application is to provide a control method and device for a hybrid automobile, a terminal and a medium, which aims to control the operation of the engine according to the water content of the engine oil without additional hardware costs and other complex modifications to the structure of the automobile, to achieve the purpose of engine oil water removal during the use of the hybrid automobile, thereby improving the engine oil emulsification of the hybrid automobile.

[0005] According to an aspect of an embodiment of the present application, a control method for a hybrid automobile is disclosed, comprising:

[0006] monitoring the water content of the engine oil in the crankcase;

[0007] comparing the water content of the engine oil with a first water content threshold;

[0008] when the water content of the engine oil is higher than the first water content threshold, adjusting the power mode of the hybrid automobile to an engine direct drive mode, in which the drive motor does not drive the hybrid automobile, and the hybrid automobile is driven only by the engine.

[0009] In some embodiments of the present application, based on the above technical solution, after adjusting the power mode of the hybrid automobile to the engine direct drive mode, the control method for the hybrid automobile further comprises:

[0010] adjusting the idle speed of the engine to be equal to or higher than 1500 rpm;

[0011] controlling the engine to operate based on the adjusted idle speed.

[0012] In some embodiments of the present application, based on the above technical solution, the power mode of the hybrid vehicle is adjusted to the engine direct drive mode, which comprises:

[0013] displaying engine oil maintenance confirmation information for prompting the user to select whether to activate the engine oil maintenance mode;

[0014] activating the engine oil maintenance mode in response to a first preset instruction for the engine oil maintenance confirmation information, the first preset instruction being the user's selection to activate the engine oil maintenance mode;

[0015] adjusting the power mode of the hybrid vehicle to the engine direct drive mode in the engine oil maintenance mode.

[0016] In some embodiments of the present application, based on the above technical solution, after the engine oil maintenance mode is activated, the control method of the hybrid vehicle further comprises:

[0017] generating an engine stop prohibition signal in the engine oil maintenance mode;

[0018] closing the permission of the engine automatic stop according to the engine stop prohibition signal.

[0019] In some embodiments of the present application, based on the above technical solution, after the engine oil maintenance mode is activated, the control method of the hybrid vehicle further comprises:

[0020] generating a preset mode memory instruction according to the engine oil maintenance mode;

[0021] storing the preset mode memory instruction to the live memory;

[0022] when the hybrid vehicle is restarted after power-off, maintaining the engine oil maintenance mode according to the preset mode memory instruction.

[0023] In some embodiments of the present application, based on the above technical solution, after the engine oil maintenance mode is activated, the control method of the hybrid vehicle further comprises:

[0024] if the running time of the engine oil maintenance mode reaches a preset time length, exiting the engine oil maintenance mode and triggering a preset running instruction;

[0025] restoring the running state of the engine and the driving motor respectively to the default state according to the preset running instruction.

[0026] In some embodiments of the present application, based on the above technical solution, after the engine oil maintenance mode is activated, the control method of the hybrid vehicle further comprises:

[0027] if the water content of the engine oil of the crankcase is lower than a second water content threshold, exiting the engine oil maintenance mode, and triggering a preset operation instruction, the second water content threshold is lower than the first water content threshold;

[0028] restoring the operation states of the engine and the drive motor respectively to default states according to the preset operation instruction.

[0029] In some embodiments of the present application, based on the above technical solutions, after the engine oil maintenance confirmation information is displayed, the control method of the hybrid vehicle further includes:

[0030] in response to a second preset instruction for the engine oil maintenance confirmation information, stopping displaying the engine oil maintenance confirmation information, the second preset instruction being that a user selects not to activate the engine oil maintenance mode;

[0031] displaying the engine oil maintenance confirmation information based on a preset time interval.

[0032] In some embodiments of the present application, based on the above technical solutions, after the power mode of the hybrid vehicle is adjusted to the engine direct drive mode, the control method of the hybrid vehicle further includes:

[0033] obtaining an energy storage ratio of a battery module and an operation load of the engine;

[0034] if the energy storage ratio of the battery module is lower than a first preset energy storage ratio, and the operation load of the engine is lower than a preset thermal efficiency operating point, controlling the drive motor to output a negative torque to the engine to increase the operation load of the engine, and charging the battery module based on the engine.

[0035] In some embodiments of the present application, based on the above technical solutions, after the drive motor is controlled to output a negative torque to the engine, the control method of the hybrid vehicle further includes:

[0036] if the energy storage ratio of the battery module is higher than a second preset energy storage ratio, the second preset energy storage ratio being higher than the first preset energy storage ratio, generating a stop charging instruction;

[0037] controlling the drive motor to stop outputting a negative torque to the engine according to the stop charging instruction.

[0038] According to an aspect of an embodiment of the present application, a control device of a hybrid vehicle is disclosed, comprising:

[0039] a monitoring module configured to monitor a water content of engine oil of a crankcase;

[0040] a comparison module configured to compare the water content of the engine oil with a first water content threshold;

[0041] The power adjustment module is configured to adjust the power mode of the hybrid vehicle to an engine direct drive mode when the water content of the engine oil is higher than a first water content threshold, in which the driving motor does not drive the hybrid vehicle, and the hybrid vehicle is driven by the engine only.

[0042] According to an aspect of the embodiments of the present application, a computer program product or computer program is provided, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to enable the computer device to perform the control method of the hybrid vehicle as in the above technical solutions.

[0043] The control method of the hybrid vehicle provided by the present application monitors the water content of the engine oil of the crankcase. When the water content of the engine oil reaches a first water content threshold, the engine oil needs to be dehydrated at this time, the power mode of the hybrid vehicle is adjusted to an engine direct drive mode, i.e., the hybrid vehicle is driven by the engine only, and the driving motor connected to the battery module is prohibited from outputting positive torque to drive the wheels, so as to ensure that the load of the engine is not reduced, thereby enabling the engine oil to be heated and warmed up, and finally enabling the water contained in the engine oil to evaporate.

[0044] Therefore, the control method of the hybrid vehicle provided by the present application does not need to increase the hardware cost and other complex changes to the structure of the vehicle, and adjusts the power mode of the hybrid vehicle according to the water content of the engine oil during use of the hybrid vehicle to achieve the purpose of dehydrating the engine oil, thereby improving the engine oil emulsification of the hybrid vehicle.

[0045] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings, which are incorporated into and form part of the specification, illustrate one embodiment consistent with the present application and, together with the specification, serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0047] Figure 1 A step flowchart of the control method of the hybrid vehicle in one embodiment of the present application is shown.

[0048] Figure 2 A step flowchart of activating the engine oil maintenance mode in one embodiment of the present application is shown.

[0049] Figure 3 A flowchart of steps for controlling the drive motor to output negative torque based on the engine charging the battery module is shown in one embodiment of the application.

[0050] Figure 4 An application flowchart of one embodiment of the application is shown.

[0051] Figure 5 A structural block diagram of a control device of a hybrid vehicle provided by an embodiment of the application is shown schematically.

[0052] Figure 6 A computer system structural block diagram of an electronic device suitable for implementing an embodiment of the application is shown schematically. DETAILED DESCRIPTION

[0053] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0054] Moreover, described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0055] The block diagrams shown in the accompanying drawings are merely functional entities, and do not necessarily have to correspond to physically independent entities. That is, the functional entities can be implemented in software, or in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0056] The flowcharts shown in the accompanying drawings are merely exemplary illustrations, and do not necessarily include all contents and operations / steps, nor do they have to be executed in the order described. For example, some operations / steps can be further broken down, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to actual conditions.

[0057] The control method, device, terminal, and medium of a hybrid vehicle provided by the application will be described in detail below in conjunction with the specific embodiments.

[0058] Figure 1A flow chart of steps of the control method of the hybrid vehicle in an embodiment of the present application is shown as Figure 1 The control method of the hybrid vehicle can mainly include the following steps S100 to S300.

[0059] Step S100, monitoring the water content of the engine oil of the crankcase.

[0060] Step S200, comparing the water content of the engine oil with a first water content threshold.

[0061] Step S300, when the water content of the engine oil is higher than the first water content threshold, adjusting the power mode of the hybrid vehicle to an engine direct drive mode, in which the driving motor does not drive the hybrid vehicle, and the hybrid vehicle is driven by the engine only.

[0062] The control method of the hybrid vehicle provided by the present application monitors the water content of the engine oil of the crankcase, when the water content of the engine oil reaches the first water content threshold, i.e. the engine oil needs to be dehydrated, the power mode of the hybrid vehicle is adjusted to the engine direct drive mode, i.e. the hybrid vehicle is driven by the engine only, and the driving motor connected to the battery module is prohibited to output positive torque to drive the wheels, so as to ensure that the load of the engine does not decrease, so that the engine oil is heated and warmed up, and finally the water contained in the engine oil is evaporated.

[0063] In this way, the control method of the hybrid vehicle provided by the present application does not need to increase the hardware cost and other complex changes to the structure of the vehicle, and adjusts the power mode of the hybrid vehicle according to the water content of the engine oil during use to achieve the purpose of dehydrating the engine oil, thereby improving the emulsification of the engine oil of the hybrid vehicle.

[0064] The following will describe each method step of the control method of the hybrid vehicle in detail.

[0065] Step S100, monitoring the water content of the engine oil of the crankcase.

[0066] Specifically, when the hybrid vehicle is in a low temperature environment, the engine oil of the engine is relatively slow to warm up during vehicle driving, or when the hybrid vehicle is in a road condition requiring low speed driving, the engine oil cannot be warmed up to a high temperature due to multiple short-time operation of the engine, at this time, water vapor from piston blow-by and other sources is easy to condense and enter the engine oil, thereby causing the problem of engine oil emulsification, which in severe cases can even cause the engine oil to deteriorate and the lubricating ability to deteriorate, accelerating the wear and corrosion of the engine during operation. Therefore, the water content of the engine oil of the crankcase needs to be monitored to perform engine oil dehydration operation in time before reaching a high water content of the engine oil.

[0067] As a feasible implementation, a water content calculation model of the engine oil can be obtained through physical modeling, and then the water content of the engine oil in the crankcase is calculated according to the water content calculation model of the engine oil, so as to realize the purpose of monitoring the water content of the engine oil in the crankcase.

[0068] As a feasible implementation, a water content sensor of the engine oil can be used to monitor the water content of the engine oil in the crankcase, and the monitoring information is sent to the vehicle controller for the vehicle controller to determine whether the engine oil water removal operation needs to be performed.

[0069] It can be understood that there are various implementations for monitoring the water content of the engine oil, which are not limited here.

[0070] Step S200, comparing the water content of the engine oil with the first water content threshold.

[0071] Specifically, the monitored water content of the engine oil is compared with the first water content threshold calibrated in advance to determine whether the engine oil water removal operation needs to be performed.

[0072] As an optional implementation, the first water content threshold can be 1%, 1.2%, 1.5%, etc., which is not limited here.

[0073] Step S300, when the water content of the engine oil is higher than the first water content threshold, the power mode of the hybrid vehicle is adjusted to an engine direct drive mode, in which the driving motor does not drive the hybrid vehicle, and the hybrid vehicle is driven only by the engine.

[0074] Specifically, when the water content of the crankcase is monitored to be higher than the first water content threshold, the vehicle controller adjusts the power mode of the hybrid vehicle to the engine direct drive mode, that is, controls the engine to drive the hybrid vehicle, and prohibits the driving motor from outputting positive torque to drive the wheels, so as to ensure the engine load and the heating effect of the engine on the engine oil during operation.

[0075] In a feasible embodiment, after the power mode of the hybrid vehicle is adjusted to the engine direct drive mode in the above step S300, the control method of the hybrid vehicle further includes the following steps S301 and S302.

[0076] Step S301, adjusting the idle speed of the engine to be equal to or higher than 1500 rpm.

[0077] Step S302, controlling the engine to operate based on the adjusted idle speed.

[0078] Specifically, in the engine direct drive mode, the idle speed of the engine is equal to or higher than 1500 rpm. Since the idle speed of the engine during normal operation of the hybrid vehicle is usually 800 rpm-1000 rpm, the engine is higher in speed relative to the normal operation, and the effect of heating and warming the oil is more obvious, thereby better achieving the purpose of removing water from the oil.

[0079] It can be understood that when the hybrid vehicle is in the engine direct drive mode, the above idle speed of the engine can be artificially calibrated, i.e., it can also be 1400 rpm, 1500 rpm, 1600 rpm, etc., which is not specifically limited herein, but the idle speed is higher than the idle speed range 800 rpm-1000 rpm of the engine during normal operation.

[0080] In a feasible embodiment, after adjusting the power mode of the hybrid vehicle to the engine direct drive mode to heat and warm the oil, when the oil temperature reaches a preset temperature value, the piston can be controlled to suck external air into the crankcase through the crankcase ventilation pipe and perform scavenging, thereby removing the water vapor in the crankcase triggered by evaporation from the oil.

[0081] Further, as shown in Figure 2 In a feasible embodiment, the step S300 of adjusting the power mode of the hybrid vehicle to the engine direct drive mode includes the following steps S303-S305.

[0082] Step S303, display oil maintenance confirmation information, the oil maintenance confirmation information is used to prompt the user whether to select to activate the oil maintenance mode.

[0083] Specifically, when it is monitored that the water content of the crankcase is higher than the first water content threshold, the oil maintenance confirmation information is displayed on the car central control screen or other display device, reminding the user that the water content of the current crankcase is high, and asking the user whether to activate the oil maintenance mode to perform the oil water removal operation.

[0084] Step S304, in response to a first preset instruction for the oil maintenance confirmation information, activating the oil maintenance mode, the first preset instruction being the user selecting to activate the oil maintenance mode.

[0085] Specifically, after the oil maintenance confirmation information is displayed on the car central control screen or other display device, the user interacts with the central control screen or other display device to trigger the first preset instruction, and at this time the vehicle controller activates the oil maintenance mode according to the first preset instruction.

[0086] Step S305, adjusting the power mode of the hybrid vehicle to the engine direct drive mode in the oil maintenance mode.

[0087] Specifically, when the vehicle controller activates the oil maintenance mode, the power mode of the hybrid vehicle is adjusted to the engine direct drive mode to heat and warm up the oil, thereby reducing the water content in the oil.

[0088] Thus, in the embodiment, when the water content in the crankcase is higher than the first water content threshold, i.e., the vehicle needs to perform the oil water removal operation, the oil maintenance confirmation information is displayed in advance for the user to select whether to activate the oil maintenance mode to perform the oil water removal operation, i.e., by providing the user with the option of whether to activate the oil maintenance mode, it is determined whether the power mode of the hybrid vehicle needs to be adjusted to the engine direct drive mode to meet the needs of the hybrid vehicle in different environments / road conditions.

[0089] Further, in a feasible embodiment, after the oil maintenance mode is activated in the above step S304, the control method of the hybrid vehicle further includes the following steps S306 and S307.

[0090] Step S306, generating an engine stop prohibition signal in the oil maintenance mode.

[0091] Step S307, closing the permission of the engine automatic stop according to the engine stop prohibition signal.

[0092] Specifically, the vehicle controller generates a stop prohibition signal in the oil maintenance mode and sends the stop prohibition signal to the engine to prohibit the engine from automatically stopping, thereby ensuring the continuous operation of the engine and continuing to heat and warm up the oil.

[0093] For example, when the hybrid vehicle is driving at low speed, the engine may automatically stop to save energy due to the small driving force required by the wheels. Since the engine needs to be maintained in operation to heat and warm up the oil in the oil maintenance mode, the vehicle controller prohibits the engine from automatically stopping.

[0094] Thus, in the embodiment, by prohibiting the engine from automatically stopping in the oil maintenance mode, the continuous operation of the engine to heat and warm up the oil is ensured, thereby improving the practicality of the technical scheme of the application.

[0095] Further, in a feasible embodiment, after the oil maintenance mode is activated in the above step S304, the control method of the hybrid vehicle further includes the following steps S308 to S310.

[0096] Step S308, generating a preset mode memory instruction according to the oil maintenance mode.

[0097] Step S309, storing the preset mode memory instruction to the charged storage.

[0098] Step S310, when the hybrid vehicle is restarted after being powered off, maintaining the oil maintenance mode according to the preset mode memory instruction.

[0099] Specifically, when the vehicle controller activates the oil maintenance mode, a mode memory instruction corresponding to the oil maintenance mode is generated and stored in the powered memory EEPROM. On this basis, even if the hybrid vehicle is parked and powered off during the journey, the mode memory instruction can be read from the powered memory EEPROM when the vehicle is powered on for the next journey, so that the oil maintenance mode is continued to maintain the oil maintenance mode to perform the oil water removal operation.

[0100] Thus, in the present embodiment, by generating a preset mode memory instruction and storing the preset mode memory instruction in the powered memory, the situation that the hybrid vehicle exits the oil maintenance mode due to parking and powering off during the journey, so that the oil water removal operation cannot be continued to be performed, is avoided.

[0101] Further, in a feasible embodiment, after activating the oil maintenance mode in the above step S302, the control method of the hybrid vehicle further includes the following steps S311 and S312.

[0102] Step S311, if the continuous running time of the oil maintenance mode reaches the preset time length, the oil maintenance mode is exited and a preset running instruction is triggered.

[0103] Step S312, according to the preset running instruction, the running state of the engine and the driving motor corresponding respectively is restored to the default state.

[0104] Specifically, when the vehicle controller activates the oil maintenance mode, the continuous running time of the oil maintenance mode is monitored at the same time, when the continuous running time reaches the preset time length, the oil maintenance mode is automatically exited, the restriction of the engine running based on the minimum idle speed is cancelled, and the running state of the driving motor is set to the normal driving mode, so that the driving motor can output positive torque to drive the wheels.

[0105] In the present embodiment, there may be a situation that the hybrid vehicle is in the oil maintenance mode for a long time to perform the oil water removal operation, but the water content in the oil cannot reach a lower level, so the oil maintenance mode cannot be exited. The reason may be that the monitoring process of the water content in the oil fails, or other components of the hybrid vehicle related to the oil water removal operation fail, in which case the oil maintenance mode is exited to avoid the engine running at a high speed to cause high energy consumption.

[0106] In an embodiment, the preset time length for determining whether to exit the engine oil maintenance mode is 1800s.

[0107] It can be understood that the preset time length for determining whether to exit the engine oil maintenance mode can also be 2100s, 2400s, 2700s, etc., which is not limited herein.

[0108] Further, in an embodiment, after the engine oil maintenance mode is activated in step S302, the control method of the hybrid vehicle further includes steps S313 and S314.

[0109] In step S313, if the water content of the engine oil of the crankcase is lower than a second water content threshold, the engine oil maintenance mode is exited, and a preset operation instruction is triggered, the second water content threshold being lower than the first water content threshold.

[0110] In step S314, the operation state of the engine and the driving motor corresponding to the preset operation instruction is restored to a default state.

[0111] Specifically, after the engine oil maintenance mode is activated by the vehicle controller, the water content of the engine oil of the crankcase is continuously monitored, and when the water content of the engine oil is lower than the second water content threshold, the engine oil maintenance mode is automatically exited, the restriction on the engine running at the minimum idle speed is cancelled, and the operation state of the driving motor is set to the normal driving mode, so that the driving motor can output positive torque to drive the wheels.

[0112] As an optional embodiment, the second water content threshold can be 0%, 0.1%, 0.2%, etc., which is not limited herein.

[0113] Further, in an embodiment, after the engine oil maintenance confirmation information is displayed in step S303, the control method of the hybrid vehicle further includes steps S315 and S316.

[0114] In step S315, in response to a second preset instruction for the engine oil maintenance confirmation information, the display of the engine oil maintenance confirmation information is stopped, and the second preset instruction is that the user selects not to activate the engine oil maintenance mode.

[0115] In step S316, the engine oil maintenance confirmation information is displayed based on a preset time interval.

[0116] Specifically, when the water content of the crankcase is monitored to be higher than the first water content threshold, oil maintenance confirmation information is displayed on the car central control screen or other display device, reminding the user that the current water content of the crankcase is high, and asking the user to choose whether to activate the oil maintenance mode to perform the oil water removal operation. The user interacts with the central control screen or other display device to trigger the second preset instruction, i.e. the user chooses not to activate the oil maintenance mode, the oil maintenance confirmation information is stopped from being displayed, and the oil maintenance confirmation information is displayed again after a certain period of time.

[0117] In a feasible embodiment, for example, the user starts the hybrid vehicle and wants to move it slightly, but at this time the oil water content is high. Since the user is about to turn off the power and stop the vehicle, there is no need to activate the oil maintenance mode at this time, which avoids excessive energy consumption caused by maintaining a high engine speed under the activated oil maintenance mode. Therefore, the user can interact with the central control screen to choose not to activate the oil maintenance mode, the central control screen stops displaying the oil maintenance confirmation information, and the oil maintenance confirmation information is displayed again after 5 minutes. It can be understood that the preset time interval for displaying the oil maintenance confirmation information again can be 3 minutes, 5 minutes, or 10 minutes, etc., which is not limited here.

[0118] Further, as shown in Figure 3 In a feasible embodiment, after adjusting the power mode of the hybrid vehicle to the engine direct drive mode in step S300, the control method of the hybrid vehicle further includes steps S317 and S318 as follows.

[0119] In step S317, the energy storage ratio of the battery module and the operating load of the engine are obtained.

[0120] In step S318, if the energy storage ratio of the battery module is lower than the first preset energy storage ratio, and the operating load of the engine is lower than the preset thermal efficiency operating point, a negative torque is output to the engine by the drive motor to increase the operating load of the engine, and the engine charges the battery module based on the engine.

[0121] Specifically, when the operating load of the engine is in the thermal efficiency optimal operating region, the efficiency of heat conversion of the engine is the highest. It can be understood that if the operating load of the engine is lower than the preset thermal efficiency operating point, the efficiency of heat conversion of the engine can be improved by increasing the operating load of the engine, and the vehicle does not need the engine to provide excessive driving force, and the energy storage ratio of the battery module is lower than the first preset energy storage ratio, a negative torque is output to the engine by the drive motor to charge the battery module by the engine, and the efficiency of heat conversion of the engine is also improved. That is, at this time, the effects of oil water removal, improving the efficiency of heat conversion of the engine, and charging the battery module for energy storage can be achieved simultaneously.

[0122] In one possible implementation, the first preset energy storage ratio is 80%.

[0123] It can be understood that in other possible implementations, the first preset energy storage ratio can be artificially calibrated, i.e., can be 70%, 75%, 80%, 85%, etc., which is not specifically limited here.

[0124] Further, on the basis of the above embodiments, after the control of the drive motor to output negative torque to the engine in step S318, the control method of the hybrid vehicle further includes the following steps S319 and S320.

[0125] Step S319, if the energy storage ratio of the battery module is higher than a second preset energy storage ratio, the second preset energy storage ratio is higher than the first preset energy storage ratio, a stop charging instruction is generated.

[0126] Step S320, the drive motor is controlled to stop outputting negative torque to the engine according to the stop charging instruction.

[0127] Specifically, after the vehicle controller controls the drive motor to output negative torque to charge the battery module through the engine, the energy storage ratio of the battery module, i.e., the electric quantity, is continuously monitored. When the energy storage ratio of the battery module is higher than the second preset energy storage ratio, i.e., the electric quantity of the battery module is relatively high and should not continue to be charged, a corresponding stop charging instruction is generated, and the drive motor is controlled to stop outputting negative torque, so that the engine stops charging the battery module.

[0128] In one possible implementation, the second preset energy storage ratio is 90%.

[0129] It can be understood that in other possible implementations, the second preset energy storage ratio can be artificially calibrated, i.e., can be 85%, 90%, 95%, etc., which is not specifically limited here.

[0130] In this way, the present embodiment controls the drive motor to output negative torque or not, so that the engine operating load is located as close as possible to the preset thermal efficiency operating point, and at the same time, the battery module is charged through the engine to store energy, thereby maximizing the conversion and utilization of engine output power.

[0131] Figure 4 An application flowchart of the control method of the hybrid vehicle of the present application is shown, including the following steps S401 to S407.

[0132] Step S401, when the hybrid vehicle is in a driving state, if it is the first running after power-on, the oil maintenance mode state needs to be read from the electric storage EEPROM, if the reading result is ModeSt=true, it indicates that the vehicle was in the oil maintenance mode when it was powered off last time, at this time, step S403 is directly executed to enter the oil maintenance mode.

[0133] Step S402, when the hybrid vehicle is in a driving state, if it is not the first running after power-on, or the oil maintenance mode state is read from the electric storage EEPROM, if the reading result is ModeSt=false, the water content Wp of the oil in the crankcase is monitored, and it is judged whether the water content Wp of the oil is greater than the first water content threshold 1%.

[0134] Step S403, if the reading result of the oil maintenance mode state read from the electric storage EEPROM is ModeSt=true, or the water content Wp of the oil is greater than the first water content threshold 1%, only the maintenance mode is entered, and then the timing T1 is started.

[0135] Step S404, when the hybrid vehicle enters the oil maintenance mode, the response prompt information is displayed on the instrument panel or the central control screen for the user to refer; at the same time, the control signal corresponding to the oil maintenance mode is sent to the vehicle controller VCU, such as controlling the engine to run based on the preset minimum idle speed, prohibiting the drive motor to output positive torque, etc.

[0136] Step S405, when the hybrid vehicle is in the oil maintenance mode, it is continuously monitored whether the water content of the oil in the crankcase is reduced to the second water content threshold 0% and whether the running time of the oil maintenance mode reaches the preset time length 30 minutes. If neither the water content of the oil nor the running time of the oil maintenance mode reaches the preset condition, the oil maintenance mode is continuously maintained.

[0137] Step S406, if the water content of the oil in the crankcase is reduced to the second water content threshold 0% or the running time of the oil maintenance mode reaches the preset time length 30 minutes, the hybrid vehicle is controlled to exit the oil maintenance mode, and the restriction of the engine running based on the preset minimum idle speed and the restriction of prohibiting the drive motor to output positive torque are cancelled.

[0138] Step S407, when the hybrid vehicle exits the oil maintenance mode, the response prompt information is displayed on the instrument panel or the central control screen for the user to refer.

[0139] The device embodiment of the present application is introduced below, which can be used to execute the control method of the hybrid vehicle in the above-mentioned embodiments of the present application. Figure 5 The structural block diagram of the control device of the hybrid vehicle provided by the embodiments of the present application is schematically shown. As shown in Figure 5As shown, the control device 500 of the hybrid vehicle comprises:

[0140] a monitoring module 510 configured to monitor a water content of the engine oil of the crankcase;

[0141] a comparing module 520 configured to compare the water content of the engine oil with a first water content threshold;

[0142] a power adjusting module 530 configured to adjust a power mode of the hybrid vehicle to an engine direct drive mode when the water content of the engine oil is higher than the first water content threshold, in which the engine direct drive mode, the driving motor does not generate driving effect on the hybrid vehicle, and the hybrid vehicle is driven only by the engine.

[0143] In an embodiment of the present application, based on the above embodiment, the control device of the hybrid vehicle further comprises:

[0144] a parameter adjusting module configured to adjust an idle speed of the engine to be equal to or higher than 1500 rpm; and control the engine to operate based on the adjusted idle speed.

[0145] In an embodiment of the present application, based on the above embodiment, the power adjusting module comprises:

[0146] an information display unit configured to display engine oil maintenance confirmation information for prompting a user to select whether to activate an engine oil maintenance mode; and in response to a second preset instruction for the engine oil maintenance confirmation information, stop displaying the engine oil maintenance confirmation information, the second preset instruction being that the user selects not to activate the engine oil maintenance mode, and display the engine oil maintenance confirmation information based on a preset time interval.

[0147] a mode activating unit configured to activate the engine oil maintenance mode in response to a first preset instruction for the engine oil maintenance confirmation information, the first preset instruction being that the user selects to activate the engine oil maintenance mode.

[0148] an adjusting unit configured to adjust a power mode of the hybrid vehicle to an engine direct drive mode in the engine oil maintenance mode.

[0149] In an embodiment of the present application, based on the above embodiment, the power adjusting module further comprises:

[0150] an engine permission control unit configured to generate an engine stop prohibition signal in the engine oil maintenance mode; and close the permission of the engine automatic stop according to the engine stop prohibition signal.

[0151] In an embodiment of the present application, based on the above embodiment, the power adjusting module further comprises:

[0152] a mode storage unit configured to generate a preset mode memory instruction according to the engine oil maintenance mode, and store the preset mode memory instruction to an active memory, and maintain the engine oil maintenance mode according to the preset mode memory instruction when the hybrid vehicle is restarted after being powered off.

[0153] In an embodiment of the present application, based on the above embodiment, the power adjustment module further comprises:

[0154] a first mode exit unit configured to exit the engine oil maintenance mode and trigger a preset operation instruction if a duration of the engine oil maintenance mode reaches a preset time length, and restore respective operation states of the engine and the drive motor to default states according to the preset operation instruction.

[0155] In an embodiment of the present application, based on the above embodiment, the power adjustment module further comprises:

[0156] a second mode exit unit configured to exit the engine oil maintenance mode and trigger a preset operation instruction if the water content of the engine oil in the crankcase is lower than a second water content threshold, the second water content threshold being lower than the first water content threshold, and restore respective operation states of the engine and the drive motor to default states according to the preset operation instruction.

[0157] In an embodiment of the present application, based on the above embodiment, the power adjustment module further comprises:

[0158] an acquisition unit configured to acquire an energy storage ratio of a battery module and an operation load of the engine;

[0159] a charging control unit configured to control the drive motor to output a negative torque to the engine to increase the operation load of the engine and charge the battery module based on the engine if the energy storage ratio of the battery module is lower than a first preset energy storage ratio and the operation load of the engine is lower than a preset thermal efficiency operating point, and generate a stop charging instruction if the energy storage ratio of the battery module is higher than a second preset energy storage ratio, the second preset energy storage ratio being higher than the first preset energy storage ratio, and control the drive motor to stop outputting the negative torque to the engine according to the stop charging instruction.

[0160] Figure 6 A computer system structure block diagram of an electronic device for implementing embodiments of the present application is schematically shown.

[0161] It should be noted that, Figure 6 The computer system 600 of the electronic device shown is only an example and should not impose any limitation on the functions and use range of embodiments of the present application.

[0162] like Figure 6 As shown, the computer system 600 includes a central processing unit 601 (CPU), which can perform various appropriate actions and processes according to the program stored in the read-only memory 602 (ROM) or the program loaded from the storage part 608 into the random access memory 603 (RAM). Various programs and data required for system operation are also stored in the random access memory 603. The central processing unit 601, the read-only memory 602 and the random access memory 603 are connected to each other via a bus 604. An input / output interface 605 (i.e., an I / O interface) is also connected to the bus 604.

[0163] The following components are connected to the input / output interface 605: an input section 606 including a keyboard, a mouse, and the like; an output section 607 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 608 including a hard disk; and a communication section 609 including a network interface card such as a local area network card or a modem. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the input / output interface 605 as needed. Removable media 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, and the like, are installed in the drive 610 as needed, so that computer programs read therefrom can be installed into the storage section 608 as needed.

[0164] In particular, according to an embodiment of the present application, the processes described in the various method flow charts can be implemented as computer software programs. For example, an embodiment of the present application includes a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for executing the methods shown in the flow charts. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 609 and / or installed from a removable medium 611. When the computer program is executed by the central processing unit 601, the various functions defined in the system of the present application are performed.

[0165] It should be noted that the computer-readable medium in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples of the computer-readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, device or apparatus. In this application, the computer-readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including, but not limited to, an electromagnetic signal, an optical signal, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium that can send, transmit, propagate, or transport a program for use by or in connection with an instruction execution system, device or apparatus. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including, but not limited to, wireless, wired, or the like, or any suitable combination thereof.

[0166] The flowcharts and block diagrams in the drawings illustrate the possible architectures, functionality, and operations of systems, methods, and computer program products in accordance with various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or in the reverse order, depending on the functionality involved. It will also be noted that each block in the block diagrams or flowcharts, and combinations of blocks in the block diagrams or flowcharts, can be implemented by special-purpose hardware-based systems that perform the specified functions or operations, or combinations of special-purpose hardware and computer instructions.

[0167] It should be noted that, although several modules or units for a device for action execution are mentioned in the above detailed description, such a division is not mandatory. Indeed, according to an embodiment of the application, the features and functionalities of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functionalities of one module or unit described above can be further divided into several modules or units embodied.

[0168] Those skilled in the art can easily understand, through the above description of the embodiments, that the example embodiments described herein can be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a U disk, a mobile hard disk, etc.) or a network, and includes several instructions to make a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) execute the methods according to the embodiments of the present application.

[0169] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present application cover any and all variations of the application that come within the scope of the present application, along with all of the equivalents thereof. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0170] It should be understood that the present application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present application. The scope of the present application is limited only by the appended claims.

Claims

1. A control method of a hybrid vehicle, characterized by, The control method of the hybrid vehicle includes: monitoring water content of the engine oil in the crankcase; comparing the water content of the engine oil with a first water content threshold value; adjusting a power mode of the hybrid vehicle to an engine direct drive mode when the water content of the engine oil is higher than the first water content threshold value, in which the engine direct drive mode is that the drive motor does not drive the hybrid vehicle and the hybrid vehicle is driven by the engine only; after adjusting the power mode of the hybrid vehicle to the engine direct drive mode, the control method of the hybrid vehicle further includes: adjusting an idle speed of the engine to be equal to or higher than 1500 rpm; controlling the engine to operate based on the adjusted idle speed; after adjusting the power mode of the hybrid vehicle to the engine direct drive mode, when the engine oil temperature reaches a preset temperature value, controlling the piston to suck external air into the crankcase through the crankcase ventilation pipe and to perform scavenging to remove water vapor in the crankcase triggered by evaporation of the engine oil.

2. The control method of the hybrid vehicle according to claim 1, characterized by, adjusting the power mode of the hybrid vehicle to the engine direct drive mode includes: displaying engine oil maintenance confirmation information for prompting a user to select whether to activate an engine oil maintenance mode; in response to a first preset instruction for the engine oil maintenance confirmation information, activating the engine oil maintenance mode, the first preset instruction being that the user selects to activate the engine oil maintenance mode; adjusting the power mode of the hybrid vehicle to the engine direct drive mode in the engine oil maintenance mode.

3. The control method of the hybrid vehicle according to claim 2, characterized by, after activating the engine oil maintenance mode, the control method of the hybrid vehicle further includes: generating an engine stop prohibition signal in the engine oil maintenance mode; closing a permission of the engine automatic stop according to the engine stop prohibition signal.

4. The control method of the hybrid vehicle according to claim 2, characterized by, after activating the engine oil maintenance mode, the control method of the hybrid vehicle further includes: generating a preset mode memory instruction according to the engine oil maintenance mode; storing the preset mode memory instruction to a live memory; when the hybrid vehicle is restarted after being powered off, maintaining the engine oil maintenance mode according to the preset mode memory instruction.

5. The control method of the hybrid vehicle according to claim 2, characterized by, after activating the engine oil maintenance mode, the control method of the hybrid vehicle further includes: if a continuous operation time of the engine oil maintenance mode reaches a preset time length, exiting the engine oil maintenance mode and triggering a preset operation instruction; restoring respective operation states of the engine and the drive motor to default states according to the preset operation instruction.

6. The control method of the hybrid vehicle according to claim 2, characterized by, after activating the engine oil maintenance mode, the control method of the hybrid vehicle further includes: if the water content of the engine oil in the crankcase is lower than a second water content threshold value, exiting the engine oil maintenance mode and triggering a preset operation instruction, the second water content threshold value being lower than the first water content threshold value; restoring respective operation states of the engine and the drive motor to default states according to the preset operation instruction.

7. The control method of the hybrid vehicle according to claim 2, characterized by, after displaying the engine oil maintenance confirmation information, the control method of the hybrid vehicle further includes: in response to a second preset instruction for the engine oil maintenance confirmation information, stopping displaying the engine oil maintenance confirmation information, the second preset instruction being that the user selects not to activate the engine oil maintenance mode; The engine maintenance confirmation information is displayed based on a preset time interval.

8. The control method of the hybrid vehicle according to claim 1, characterized by, After adjusting the power mode of the hybrid vehicle to the engine direct drive mode, the control method of the hybrid vehicle further comprises: obtaining the energy storage ratio of the battery module and the operating load of the engine; if the energy storage ratio of the battery module is lower than a first preset energy storage ratio and the operating load of the engine is lower than a preset thermal efficiency operating point, controlling the drive motor to output a negative torque to the engine to increase the operating load of the engine, and charging the battery module based on the engine.

9. The control method of the hybrid vehicle according to claim 8, characterized by, After controlling the drive motor to output a negative torque to the engine, the control method of the hybrid vehicle further comprises: if the energy storage ratio of the battery module is higher than a second preset energy storage ratio, the second preset energy storage ratio is higher than the first preset energy storage ratio, generating a stop charging instruction; controlling the drive motor to stop outputting a negative torque to the engine according to the stop charging instruction.

10. A control device of a hybrid vehicle, characterized by comprising: The control device of the hybrid vehicle comprises: a monitoring module configured to monitor the water content of the engine oil in the crankcase; a comparison module configured to compare the water content of the engine oil with a first water content threshold; a power adjustment module configured to adjust the power mode of the hybrid vehicle to an engine direct drive mode when the water content of the engine oil is higher than the first water content threshold, in the engine direct drive mode, the drive motor does not drive the hybrid vehicle, and the hybrid vehicle is only driven by the engine; The control device of the hybrid vehicle further comprises: a parameter adjustment module configured to adjust the idle speed of the engine to be equal to or higher than 1500 rpm; and control the engine to operate based on the adjusted idle speed; a control module configured to control the piston to suck external air into the crankcase through the crankcase ventilation pipe and perform scavenging to remove water vapor triggered by evaporation from the engine oil in the crankcase when the engine oil temperature reaches a preset temperature value.

11. A terminal device, comprising: The terminal device comprises a memory, a processor, and a control method of a hybrid vehicle stored on the memory and executable on the processor, and the control method of the hybrid vehicle is implemented when the processor is executed as claimed in any one of claims 1 to 9.

12. A storage medium, characterized by The storage medium stores a computer program, and the computer program is executed by the processor to implement the control method of the hybrid vehicle as claimed in any one of claims 1 to 9.

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