Self-check method, apparatus and device for switch solenoid valve in hybrid vehicle, and storage medium

Abstract

The present application discloses a self-check method, apparatus and device for a switch solenoid valve in a hybrid vehicle, and a storage medium. The method comprises: detecting the state of a switch solenoid valve, and when a self-check state is satisfied, acquiring a transmission oil temperature and a drive-motor stator temperature; when the temperature difference between the transmission oil temperature and the drive-motor stator temperature is greater than a first threshold, determining a temperature rise value of the drive-motor stator temperature; when the temperature rise value is greater than a second threshold, generating a diagnostic trouble code indicating leakage of the switch solenoid valve; and determining a self-check result on the basis of the diagnostic trouble code.

Description

Hybrid vehicle switch electromagnetic valve self-checking method, device, equipment and storage medium

[0001] Related applications

[0002] The present application claims priority to Chinese Patent Application No. 202410952834.6, filed on July 16, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicle control, in particular to a hybrid vehicle switch electromagnetic valve self-checking method, device, equipment and storage medium. BACKGROUND

[0004] The main cooling and lubrication system of a hybrid vehicle cools and lubricates the driving motor, generator and clutch and their related bearings and shaft gears. Since the generator and engine use fixed gear linkage, mechanical pumps are used for cooling and lubrication in the design. When the engine starts, it can drive the mechanical pump to meet the cooling and lubrication flow demand of the generator. However, the driving motor generally uses an electronic pump to provide cooling and lubrication flow. However, considering certain special working conditions (such as cold start lubricating oil resistance, insufficient driving capacity of the electronic pump or high-speed working condition driving motor cooling and lubrication demand flow), a switch electromagnetic valve is needed to allow the lubricating oil of the generator circuit to enter the driving motor circuit to make up for the insufficient flow. The switch electromagnetic valve plays an important role in flow distribution. Once it is damaged and cannot be normally opened, it may not be able to meet the cooling and lubrication demand of each component under certain working conditions. Therefore, there is an urgent need for a switch electromagnetic valve self-checking method.

[0005] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0006] The main purpose of the present application is to provide a hybrid vehicle switch electromagnetic valve self-checking method, device, equipment and storage medium, which aims to solve the technical problem that the switch electromagnetic valve cannot be self-checked in the prior art.

[0007] To achieve the above purpose, the present application provides a hybrid vehicle switch electromagnetic valve self-checking method, which comprises:

[0008] detecting the state of the switch electromagnetic valve, and when the self-checking state is met, obtaining the transmission oil temperature and the driving motor stator temperature;

[0009] when the temperature difference between the transmission oil temperature and the driving motor stator temperature is greater than a first threshold value, determining a temperature rise value of the driving motor stator temperature;

[0010] when the temperature rise value is greater than a second threshold value, generating a code for a switch electromagnetic valve leak.

[0011] determining a self-checking result according to the code.

[0012] In an embodiment, the step of detecting the state of the on-off electromagnetic valve comprises:

[0013] power supply detection is performed on the transmission oil temperature sensor and the drive motor stator temperature sensor to obtain a first detection result;

[0014] speed detection is performed on the engine speed and fault detection is performed on the mechanical pump to obtain a second detection result;

[0015] detection is performed on the transmission oil temperature and the drive motor stator temperature to obtain a third detection result;

[0016] detection is performed on the controller area network communication state and the vehicle mode to obtain a fourth detection result;

[0017] when the first detection result, the second detection result, the third detection result and the fourth detection result are target detection results respectively, it is determined that the state of the on-off electromagnetic valve meets a self-checking state.

[0018] In an embodiment, after the step of determining the temperature rise value of the drive motor stator temperature when the temperature difference between the transmission oil temperature and the drive motor stator temperature is greater than a first threshold value, the method further comprises:

[0019] when the temperature rise value is less than a second threshold value, an open electromagnetic valve request is generated;

[0020] the on-off electromagnetic valve is opened according to the open electromagnetic valve request, and a drive motor stator temperature rise value is determined within a preset time;

[0021] when the drive motor stator temperature rise value is greater than a third threshold value, an on-off electromagnetic valve normal code is generated, and a self-checking result is determined based on the on-off electromagnetic valve normal code.

[0022] In an embodiment, after the step of opening the on-off electromagnetic valve according to the open electromagnetic valve request and determining the drive motor stator temperature rise value within a preset time, the method further comprises:

[0023] when the drive motor stator temperature rise value is less than a third threshold value, an on-off electromagnetic valve sticking code is generated, and a self-checking result is determined based on the on-off electromagnetic valve sticking code.

[0024] In an embodiment, after the step of determining a self-checking result according to the code, the method further comprises:

[0025] When the self-checking result is a self-checking failure, a self-checking failure type is determined according to the self-checking result;

[0026] When the self-checking failure type is a switch electromagnetic valve leakage, fault information is generated, and the fault information is transmitted to a vehicle control unit, so as to increase an engine rotating speed and a mechanical pump rotating speed, and increase a lubricating oil flow.

[0027] In an embodiment, after the step of determining the self-checking failure type according to the self-checking result when the self-checking result is the self-checking failure, the method further comprises:

[0028] When the self-checking failure type is a switch electromagnetic valve sticking, a transmission oil temperature is detected to obtain an oil temperature detection result;

[0029] When the oil temperature detection result is that the transmission oil temperature is less than a fourth threshold value, fault information is generated, and the fault information is transmitted to the vehicle control unit, so that the vehicle control unit limits a vehicle speed based on a fifth threshold value.

[0030] In an embodiment, after the step of detecting the transmission oil temperature to obtain the oil temperature detection result when the self-checking failure type is the switch electromagnetic valve sticking, the method further comprises:

[0031] When the oil temperature detection result is that the transmission oil temperature is greater than the fourth threshold value, fault information is generated, and the fault information is transmitted to the vehicle control unit, so that the vehicle control unit limits the vehicle speed based on the fifth threshold value.

[0032] In addition, to achieve the above object, the application further provides a hybrid vehicle switch electromagnetic valve self-checking device, which comprises:

[0033] A temperature detection module is configured to detect a state of a switch electromagnetic valve, and obtain a transmission oil temperature and a driving motor stator temperature when a self-checking state is met;

[0034] A temperature comparison module is configured to determine a temperature rising value of the driving motor stator temperature when a temperature difference between the transmission oil temperature and the driving motor stator temperature is greater than a first threshold value;

[0035] An electromagnetic valve diagnosis module is configured to generate a switch electromagnetic valve leakage code when the temperature rising value is greater than a second threshold value;

[0036] A result output module is configured to determine a self-checking result according to the code.

[0037] In addition, to achieve the above-mentioned purpose, the application further provides a hybrid vehicle switch electromagnetic valve self-checking device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the hybrid vehicle switch electromagnetic valve self-checking method.

[0038] In addition, to achieve the above-mentioned purpose, the application further provides a storage medium, which is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the hybrid vehicle switch electromagnetic valve self-checking method.

[0039] In addition, to achieve the above-mentioned purpose, the application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the hybrid vehicle switch electromagnetic valve self-checking method.

[0040] The one or more technical solutions provided by the application have at least the following technical effects: the state of the switch electromagnetic valve is detected, when the self-checking state is met, the temperature of the gearbox oil and the temperature of the driving motor stator are obtained, when the temperature difference between the temperature of the gearbox oil and the temperature of the driving motor stator is greater than a first threshold value, the temperature rise value of the driving motor stator temperature is determined, when the temperature rise value is greater than a second threshold value, a code of the switch electromagnetic valve leakage is generated, and the self-checking result is determined according to the code, and the effective state of the switch electromagnetic valve is self-checked without the need to add other sensors. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0043] Fig. 1 is a flowchart provided by the hybrid vehicle switch electromagnetic valve self-checking method according to an embodiment of the application;

[0044] Fig. 2 is a self-checking flowchart provided by the hybrid vehicle switch electromagnetic valve self-checking method according to an embodiment of the application;

[0045] Fig. 3 is a schematic diagram of a cooling and lubricating circuit provided by the hybrid vehicle switch electromagnetic valve self-checking method according to an embodiment of the application;

[0046] Fig. 4 is a schematic diagram of a module structure of a hybrid vehicle switch electromagnetic valve self-checking device according to an embodiment of the present application;

[0047] Fig. 5 is a schematic diagram of a device structure of a hardware operating environment involved in a hybrid vehicle switch electromagnetic valve self-checking method according to an embodiment of the present application.

[0048] The object, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Embodiments of the present application

[0049] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0050] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the accompanying drawings and specific embodiments.

[0051] The main solution of the embodiment of the present application is to detect the state of the switch electromagnetic valve, obtain the temperature of the gearbox oil and the temperature of the driving motor stator when the self-checking state is met, determine the temperature rise value of the driving motor stator when the temperature difference between the temperature of the gearbox oil and the temperature of the driving motor stator is greater than a first threshold value, generate a report code of the switch electromagnetic valve leakage when the temperature rise value is greater than a second threshold value, and determine the self-checking result according to the report code.

[0052] In the present embodiment, for the convenience of description, the following will be described with the identification of the hybrid vehicle switch electromagnetic valve self-checking device as the execution subject.

[0053] In the prior art, the generator and the engine are connected by fixed gears, and a mechanical pump is used for cooling and lubrication in design. When the engine starts, the mechanical pump can meet the cooling and lubrication flow demand of the generator. However, in some special working conditions (such as cold start lubricating oil resistance, electronic pump driving capacity is insufficient or high speed working condition driving motor cooling and lubrication demand flow is large), the switch electromagnetic valve is needed to let the lubricating oil of the generator road enter the driving motor road to make up the insufficient flow. The switch electromagnetic valve plays an important role in flow distribution, and once it is damaged and cannot be normally opened, it may not be able to meet the cooling and lubrication demand of each component under certain working conditions.

[0054] The application provides a solution, by detecting the state of the on-off electromagnetic valve, when the self-checking state is met, the gearbox oil temperature and the driving motor stator temperature are obtained, when the temperature difference between the gearbox oil temperature and the driving motor stator temperature is greater than a first threshold value, the temperature rising value of the driving motor stator temperature is determined, when the temperature rising value is greater than a second threshold value, the code of the on-off electromagnetic valve leakage is generated, and the self-checking result is determined according to the code, and the effective state of the on-off electromagnetic valve is self-checked without adding other sensors.

[0055] From the above embodiment, the application detects the state of the on-off electromagnetic valve, when the self-checking state is met, the gearbox oil temperature and the driving motor stator temperature are obtained, when the temperature difference between the gearbox oil temperature and the driving motor stator temperature is greater than a first threshold value, the temperature rising value of the driving motor stator temperature is determined, when the temperature rising value is greater than a second threshold value, the code of the on-off electromagnetic valve leakage is generated, and the self-checking result is determined according to the code, and the effective state of the on-off electromagnetic valve is self-checked without adding other sensors.

[0056] The execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone and the like, or an electronic device capable of realizing the above functions, a hybrid vehicle on-off electromagnetic valve self-checking device and the like. The embodiment and the following embodiments are described below by taking the hybrid vehicle on-off electromagnetic valve self-checking device as an example.

[0057] Based on this, the application embodiment provides a hybrid vehicle on-off electromagnetic valve self-checking method, and reference is made to FIG. 1, which is a flowchart of the first embodiment of the hybrid vehicle on-off electromagnetic valve self-checking method of the application.

[0058] In the embodiment, the hybrid vehicle on-off electromagnetic valve self-checking method comprises steps S10-S40.

[0059] Step S10, the state of the on-off electromagnetic valve is detected, and when the self-checking state is met, the gearbox oil temperature and the driving motor stator temperature are obtained.

[0060] The self-checking state refers to the working state of actively closing the on-off electromagnetic valve and parking power generation under the self-checking working condition.

[0061] In a specific implementation, the temperature of the motor stator and the temperature of the gearbox oil are basically consistent in the case of long-time parking of the vehicle. In the case of parking power generation, the engine drives the generator to generate power continuously. Although the mechanical pump is also working continuously, the oil temperature tends to rise overall because the on-off electromagnetic valve is a normally closed valve. If the valve leaks, hot gearbox oil will enter the drive motor circuit, causing the temperature of the drive motor stator to rise. Therefore, the on-off electromagnetic valve failure can be determined accordingly. When the temperature of the gearbox oil rises to a certain value, the on-off electromagnetic valve is requested to be opened to determine whether the gearbox oil enters the drive motor circuit, i.e., whether the temperature of the drive motor stator rises. If it rises, it proves that the on-off electromagnetic valve can work normally, and if it cannot, it means that the on-off electromagnetic valve is stuck. The on-off electromagnetic valve is a one-way valve. When the state of the on-off electromagnetic valve is detected, the temperature of the gearbox oil and the temperature of the drive motor stator are obtained when the self-checking state is met.

[0062] In an embodiment, the step of detecting the state of the on-off electromagnetic valve comprises:

[0063] The gearbox oil temperature sensor and the drive motor stator temperature sensor are powered on for detection to obtain a first detection result.

[0064] The engine speed is detected for speed detection, and the mechanical pump is detected for fault detection to obtain a second detection result.

[0065] The gearbox oil temperature and the drive motor stator temperature are detected to obtain a third detection result.

[0066] The controller area network communication state and the vehicle mode are detected to obtain a fourth detection result.

[0067] When the first detection result, the second detection result, the third detection result, and the fourth detection result are target detection results, respectively, it is determined that the state of the on-off electromagnetic valve meets the self-checking state.

[0068] In a specific implementation, when determining the state of the on-off electromagnetic valve, the self-check enabling condition can be detected, at which time the oil temperature of the gearbox and the driving motor stator temperature sensor need to be powered on for detection, the MTCU power supply fault is detected, and a first detection result is obtained, which represents the power supply conditions of the gearbox oil temperature, the driving motor stator temperature, and the MTCU. Specifically, the oil temperature and stator temperature sensor have no short circuit to ground, short circuit to power supply, etc. line fault, the sensor 5V power supply is within a reasonable range (5V ± 5% range), the MTCU 12V power supply is within a reasonable range (12V ± 5% range), the gearbox oil temperature sensor and the driving motor stator temperature sensor are powered on for detection, and the MTCU power supply detection is within a reasonable range. When the first detection result is the target detection result; the engine speed is detected for speed detection, and the mechanical pump is detected for fault detection. Specifically, when the engine speed is within a reasonable range, i.e. within the lowest and highest allowable speed range, the mechanical pump has no fault, i.e. the cooling and lubrication function is normal, and the GCU has no over-temperature fault, it is indicated that the second detection result is the target detection result; the gearbox oil temperature and the driving motor stator temperature are detected, specifically, the oil temperature and stator temperature sensor are within the sensor range, and the difference is less than the threshold to determine the self-check starting condition, and the third detection result meets the target detection result; the controller area network communication state and the vehicle mode are detected, specifically, the CAN communication is normal, i.e. the roul ingCounter and checksum are correctly identified, and the vehicle mode is identified as parking power generation, at which time it is indicated that the fourth detection result is the target detection result. When the first detection result, the second detection result, the third detection result and the fourth detection result are the target detection results respectively, it is determined that the state of the on-off electromagnetic valve meets the self-check state.

[0069] Step S20, when the temperature difference between the gearbox oil temperature and the driving motor stator temperature is greater than a first threshold value, determining a temperature rise value of the driving motor stator temperature.

[0070] In a specific implementation, referring to FIG. 2, which is a self-check flowchart. When the self-check enabling condition is met, the temperature difference between the gearbox oil temperature and the driving motor stator temperature is determined, which can be the difference between the gearbox oil temperature and the driving motor stator temperature.

[0071] Step S30, when the temperature rise value is greater than a second threshold value, generating a code of the on-off electromagnetic valve leakage.

[0072] In a specific implementation, when comparing the temperature rise value with the second threshold value, when the temperature rise value is greater than the second threshold value, it indicates that the on-off electromagnetic valve leaks at this time, so the on-off electromagnetic valve leakage code can be generated, which is used to transmit the fault information of the on-off electromagnetic valve leakage.

[0073] Step S40, determining the self-checking result according to the code.

[0074] In a specific implementation, when the self-checking result is determined according to the code, the code information can be interpreted to determine the self-checking result. After the step of determining the self-checking result according to the code, the method further includes: when the self-checking result is a self-checking failure, determining a self-checking failure type according to the self-checking result; when the self-checking failure type is a switch electromagnetic valve leakage, generating fault information and transmitting the fault information to a vehicle controller, so as to increase the engine speed and the mechanical pump speed and increase the lubricating oil flow. Specifically, when the self-checking failure type is the switch electromagnetic valve leakage, the leakage will cause the lubricating oil on the generator side to run to the drive motor side, resulting in insufficient lubrication on the generator side, and serious damage. The protection measure can be to transmit the fault information to the vehicle controller when the fault occurs, and request to increase the engine speed to increase the mechanical pump speed and then increase the flow. The request flow is the leakage amount added to the generator side.

[0075] When the self-checking failure type is a switch electromagnetic valve sticking, the oil temperature of the gearbox is detected to obtain an oil temperature detection result, and when the oil temperature detection result is that the oil temperature of the gearbox is less than a fourth threshold value, fault information is generated and transmitted to the vehicle controller, so that the vehicle controller limits the vehicle speed based on a fifth threshold value. Specifically, sticking will cause the oil on the generator side to not pass the drive motor side, and the lubricating oil amount on the drive motor side is insufficient, which mainly occurs when the oil temperature is low and the vehicle speed is high. The protection measure needs to be implemented in stages: when the oil temperature is less than the fourth threshold value, the oil is sticky at this time, the resistance is large, the electronic pump driving capacity is insufficient, and if the vehicle speed is too fast, it may cause insufficient lubrication of the drive motor shaft teeth. The fault information is transmitted to the vehicle controller for speed limiting, and the vehicle speed is less than the fifth threshold value. At this time, to avoid damaging parts, request to limp, that is, 8kph. When the oil temperature is greater than the fourth threshold value, the electronic pump has a certain working capacity, the fault information is transmitted to the vehicle controller, the drive motor power is limited to be less than the maximum drive motor power at this time only with the cooling and lubricating capacity of the electronic pump, and the maximum vehicle speed is limited to be less than the threshold value 5. (Sticking will cause the cooling and lubrication flow on the generator side to fail to reach the drive motor side. The maximum vehicle speed is determined by bench testing the electronic pump driving alone.)

[0076] In an embodiment, after the step of determining the temperature rise value of the drive motor stator temperature when the temperature difference between the oil temperature of the gearbox and the temperature of the drive motor stator is greater than a first threshold value, the method further includes:

[0077] When the temperature rise value is less than the second threshold value, an open electromagnetic valve request is generated, the open electromagnetic valve is opened according to the open electromagnetic valve request, and a driving motor stator temperature rise value is determined within a preset time; when the driving motor stator temperature rise value is greater than a third threshold value, an open electromagnetic valve normal code is generated, and a self-checking result is determined based on the open electromagnetic valve normal code.

[0078] When the driving motor stator temperature rise value is less than the third threshold value, an open electromagnetic valve stuck code is generated, and a self-checking result is determined based on the open electromagnetic valve stuck code.

[0079] And the detection result of the open electromagnetic valve is output according to the obtained open electromagnetic valve stuck self-checking result or the open electromagnetic valve normal self-checking result.

[0080] When the vehicle is self-checking, the cooling lubricating oil in the vehicle gearbox flows in each part of the vehicle to form multiple loops. Referring to FIG. 3, which is a schematic diagram of a cooling lubricating loop. When the electromagnetic valve is closed during the parking power generation, the cooling lubricating loop is loop 1-2-3; when the electromagnetic valve is opened during the parking power generation, the cooling lubricating loop is loop 1-2-3-5-6.

[0081] Loop 1: The gearbox oil (i.e. the cooling lubricating oil) passes through the generator shaft tooth and the clutch road to return to the oil sump through the mechanical oil pump.

[0082] Loop 2: The gearbox oil passes through the oil cooler, then to the generator and bearing road, and finally returns to the oil sump through the mechanical oil pump.

[0083] Loop 3: The gearbox oil passes through the driving motor shaft tooth road to return to the oil sump through the electronic oil pump.

[0084] Loop 4: The gearbox oil passes through the oil cooler, then to the driving motor and bearing road, and finally returns to the oil sump through the electronic oil pump.

[0085] Loop 5: When the oil pressure relief valve is opened, the gearbox oil passes through the relief valve to return to the oil sump through the mechanical oil pump.

[0086] Loop 6: When the open electromagnetic valve is opened, the gearbox oil passes through the oil cooler, then to the driving motor and bearing road, and finally returns to the oil sump through the mechanical oil pump.

[0087] Loop 7: When the open electromagnetic valve is opened, the gearbox oil passes through the driving motor shaft tooth road to return to the oil sump through the mechanical oil pump.

[0088] The embodiment provides a hybrid vehicle switch electromagnetic valve self-checking method, the state of the switch electromagnetic valve is detected, when a self-checking state is met, a gearbox oil temperature and a driving motor stator temperature are acquired, when a temperature difference between the gearbox oil temperature and the driving motor stator temperature is greater than a first threshold value, a temperature rising value of the driving motor stator temperature is determined, when the temperature rising value is greater than a second threshold value, a code of a switch electromagnetic valve leakage is generated, a self-checking result is determined according to the code, and the effective state of the switch electromagnetic valve is self-checked without adding other sensors.

[0089] The above examples are only used for understanding the present application and do not constitute a limitation on the hybrid vehicle switch electromagnetic valve self-checking method of the present application, and more forms of simple transformation based on the technical concept are all within the protection scope of the present application.

[0090] The present application also provides a hybrid vehicle switch electromagnetic valve self-checking device, please refer to Fig. 4, the hybrid vehicle switch electromagnetic valve self-checking device comprises:

[0091] The temperature detection module 10 is used for detecting the state of the switch electromagnetic valve, and when a self-checking state is met, the gearbox oil temperature and the driving motor stator temperature are acquired.

[0092] The temperature comparison module 20 is used for determining the temperature rising value of the driving motor stator temperature when the temperature difference between the gearbox oil temperature and the driving motor stator temperature is greater than a first threshold value.

[0093] The electromagnetic valve diagnosis module 30 is used for generating a code of a switch electromagnetic valve leakage when the temperature rising value is greater than a second threshold value.

[0094] The result output module 40 is used for determining a self-checking result according to the code.

[0095] The hybrid vehicle switch electromagnetic valve self-checking device provided by the present application adopts the hybrid vehicle switch electromagnetic valve self-checking method in the above embodiment, and can solve the technical problem that the switch electromagnetic valve cannot be self-checked in the prior art. Compared with the prior art, the hybrid vehicle switch electromagnetic valve self-checking device provided by the present application has the same beneficial effects as the hybrid vehicle switch electromagnetic valve self-checking method provided by the above embodiment, and other technical features in the hybrid vehicle switch electromagnetic valve self-checking device are the same as the features disclosed in the above embodiment method, and will not be repeated here.

[0096] The application provides a hybrid vehicle switch electromagnetic valve self-checking device. The hybrid vehicle switch electromagnetic valve self-checking device comprises at least one processor and a memory in communication connection with the at least one processor. The memory stores instructions executable by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the hybrid vehicle switch electromagnetic valve self-checking method in Embodiment I.

[0097] Reference is made to FIG. 5, which shows a structural diagram of a hybrid vehicle switch electromagnetic valve self-checking device suitable for implementing the embodiments of the application. The hybrid vehicle switch electromagnetic valve self-checking device in the embodiments of the application can include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), vehicle-mounted terminals (e.g., vehicle-mounted navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. The hybrid vehicle switch electromagnetic valve self-checking device shown in FIG. 5 is merely an example and should not impose any limitation on the functions and use range of the embodiments of the application.

[0098] As shown in FIG. 5, the hybrid vehicle switch solenoid self-checking device can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. In the RAM 1004, various programs and data required for the operation of the hybrid vehicle switch solenoid self-checking device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the hybrid vehicle switch solenoid self-checking device to communicate with other devices wirelessly or by wire to exchange data. Although the hybrid vehicle switch solenoid self-checking device with various systems is shown in the figure, it should be understood that all the systems shown are not required to be implemented or possessed. More or fewer systems can be alternatively implemented or possessed.

[0099] In particular, according to embodiments of the present disclosure, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments of the present disclosure are performed.

[0100] The hybrid vehicle switch solenoid self-checking device provided by the present disclosure adopts the hybrid vehicle switch solenoid self-checking method in the above embodiments, and can solve the technical problem that the switch solenoid cannot be self-checked in the prior art. Compared with the prior art, the hybrid vehicle switch solenoid self-checking device provided by the present disclosure has the same beneficial effects as the hybrid vehicle switch solenoid self-checking method provided by the above embodiments, and other technical features in the hybrid vehicle switch solenoid self-checking device are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0101] It should be understood that various parts of the present application can be realized in hardware, software, firmware, or a combination thereof. In the above description of embodiments, specific functional, structural, material or characteristic features are combined in a manner appropriate for the particular example or embodiment. However, each feature can also be provided separately or in any appropriate sub-combination.

[0102] The above description is merely illustrative of the application and is not intended to limit the scope of the application. Any modifications or equivalents of the application should be construed as falling within the scope of the application. The scope of the application should be determined by the appended claims.

[0103] The application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e., computer programs) for performing the hybrid vehicle switch solenoid self-checking method in the above-described embodiments.

[0104] The computer readable storage medium provided by the application may, for example, be a U disk, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, 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 conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any appropriate combination thereof. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted in any appropriate medium, including but not limited to electrical wires, optical cables, RF (Radio Frequency), etc., or any appropriate combination thereof.

[0105] The above computer readable storage medium can be included in the hybrid vehicle switch solenoid self-checking device; or can exist separately and not be assembled into the hybrid vehicle switch solenoid self-checking device.

[0106] The computer readable storage medium described above carries one or more programs, when the one or more programs are executed by the hybrid vehicle switch solenoid self-checking device, the hybrid vehicle switch solenoid self-checking device is caused to:

[0107] Detect the state of the switch solenoid, when the self-checking state is met, obtain the temperature of the gearbox oil and the temperature of the drive motor stator;

[0108] When the temperature difference between the temperature of the gearbox oil and the temperature of the drive motor stator is greater than a first threshold value, determine the temperature rise value of the temperature of the drive motor stator;

[0109] When the temperature rise value is greater than a second threshold value, generate a code indicating a switch solenoid leak;

[0110] According to the code, determine the self-checking result.

[0111] Computer program code for carrying out operations of the present application can be written in one or more programming languages or combinations of languages including an object oriented programming language such as Java, Smalltalk, C++ or conventional procedural programming languages such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0112] The flow and block diagrams in the drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flow and 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 the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flowchart illustrations, and combinations thereof, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or combinations of hardware and software.

[0113] The modules involved in the embodiments of the present application can be implemented in the form of software or in the form of hardware. In some cases, the name of the module does not constitute a limitation on the unit itself.

[0114] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer program) for executing the above-mentioned hybrid vehicle switch electromagnetic valve self-checking method, and can solve the technical problem that the switch electromagnetic valve cannot be self-checked in the prior art. Compared with the prior art, the computer readable storage medium provided by the present application has the same beneficial effects as the hybrid vehicle switch electromagnetic valve self-checking method provided by the above-mentioned embodiments, and will not be described here.

[0115] The present application also provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps of the hybrid vehicle switch electromagnetic valve self-checking method as described above.

[0116] The computer program product provided by the present application can solve the technical problem that the switch electromagnetic valve cannot be self-checked in the prior art. Compared with the prior art, the computer program product provided by the present application has the same beneficial effects as the hybrid vehicle switch electromagnetic valve self-checking method provided by the above-mentioned embodiments, and will not be described here.

[0117] The above only describes some embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A hybrid vehicle switch solenoid valve self-checking method, wherein, The hybrid vehicle switch electromagnetic valve self-checking method comprises: detecting the state of the switch electromagnetic valve, obtaining the temperature of the gearbox oil and the temperature of the driving motor stator when the self-checking state is met; determining the temperature rise value of the driving motor stator when the temperature difference between the temperature of the gearbox oil and the temperature of the driving motor stator is greater than a first threshold value; generating a switch electromagnetic valve leakage code when the temperature rise value is greater than a second threshold value; determining the self-checking result according to the code.

2. The method of claim 1, wherein, The step of detecting the state of the switch electromagnetic valve comprises: performing power supply detection on the gearbox oil temperature sensor and the driving motor stator temperature sensor to obtain a first detection result; performing speed detection on the engine speed and fault detection on the mechanical pump to obtain a second detection result; detecting the temperature of the gearbox oil and the temperature of the driving motor stator to obtain a third detection result; detecting the controller area network communication state and the vehicle mode to obtain a fourth detection result; determining that the state of the switch electromagnetic valve meets the self-checking state when the first detection result, the second detection result, the third detection result and the fourth detection result are target detection results.

3. The method of claim 1, wherein, After the step of determining the temperature rise value of the driving motor stator when the temperature difference between the temperature of the gearbox oil and the temperature of the driving motor stator is greater than a first threshold value, the method further comprises: generating an open electromagnetic valve request when the temperature rise value is less than a second threshold value; opening the switch electromagnetic valve according to the open electromagnetic valve request and determining the driving motor stator temperature rise value within a preset time; generating a switch electromagnetic valve normal code when the driving motor stator temperature rise value is greater than a third threshold value, and determining the self-checking result based on the switch electromagnetic valve normal code.

4. The method of claim 3, wherein, After the step of opening the switch electromagnetic valve according to the open electromagnetic valve request and determining the driving motor stator temperature rise value within a preset time, the method further comprises: generating a switch electromagnetic valve sticking code when the driving motor stator temperature rise value is less than a third threshold value, and determining the self-checking result based on the switch electromagnetic valve sticking code.

5. The method of claim 1, wherein, After the step of determining the self-checking result according to the code, the method further comprises: determining a self-checking failure type according to the self-checking result when the self-checking result is self-checking failure; generating fault information when the self-checking failure type is switch electromagnetic valve leakage, and transmitting the fault information to the vehicle controller to increase the engine speed and the mechanical pump speed and increase the lubricating oil flow.

6. The method of claim 5, wherein, After the step of determining the self-checking failure type according to the self-checking result when the self-checking result is self-checking failure, the method further comprises: detecting the temperature of the gearbox oil to obtain an oil temperature detection result when the self-checking failure type is switch electromagnetic valve sticking; generating fault information when the oil temperature detection result is that the temperature of the gearbox oil is less than a fourth threshold value, and transmitting the fault information to the vehicle controller to limit the vehicle speed based on a fifth threshold value.

7. The method of claim 6, wherein, The method further includes, after the step of detecting the oil temperature of the gearbox to obtain an oil temperature detection result when the self-checking failure type is the stuck open solenoid valve, the method further includes: When the oil temperature detection result is that the oil temperature of the gearbox is greater than a fourth threshold value, generating fault information and transmitting the fault information to a vehicle control unit, so that the vehicle control unit limits the vehicle speed based on a fifth threshold value.

8. A hybrid vehicle switch solenoid valve self-checking device, wherein, The device includes: A temperature detection module configured to detect a state of a solenoid valve, and obtain an oil temperature of a gearbox and a temperature of a stator of a drive motor when a self-checking state is satisfied; A temperature comparison module configured to determine a temperature increase value of the temperature of the stator of the drive motor when a temperature difference between the oil temperature of the gearbox and the temperature of the stator of the drive motor is greater than a first threshold value; An electromagnetic valve diagnosis module configured to generate a code for a leak of the solenoid valve when the temperature increase value is greater than a second threshold value; A result output module configured to determine a self-checking result based on the code.

9. A hybrid vehicle switch solenoid valve self-checking device, wherein, The device includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the self-checking method of the solenoid valve of the hybrid vehicle according to any one of claims 1 to 7.

10. A storage medium, wherein, The storage medium is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the self-checking method of the solenoid valve of the hybrid vehicle according to any one of claims 1 to 7.

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