Control method and system for preventing engine oil of hybrid electric vehicle from freezing

Abstract

The invention provides a control method and system for preventing engine oil of a hybrid electric vehicle from freezing, and the method comprises the following steps: after collecting vehicle operation data, firstly judging whether the temperature of engine coolant is lower than or equal to a preset first temperature threshold value or not; and if yes, counting the operation accumulated counting mileage of the engine under the low-temperature and low-load working condition. Then, whether the water temperature in the working condition running mileage is higher than a second preset water temperature or not is judged, and if yes, the reduced counting mileage of the low-temperature running mileage is obtained. And calculating the final low-temperature driving total mileage through low-temperature driving mileage accumulation counting and low-temperature driving mileage reduction counting. Then, whether the total mileage exceeds a measure target value threshold value or not is judged; if yes, measures are taken to reduce or close water path heat exchange, and the operation load of the engine is increased. The purpose of preventing engine oil from being frozen can be achieved, the durability of the hybrid electric vehicle engine is improved, and meanwhile the cost of the engine cannot be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid electric vehicles, and particularly relates to a method and system for preventing engine oil icing in hybrid electric vehicles. Background Art

[0002] During the operation of a hybrid electric vehicle, the engine runs intermittently. As a result, the engine oil temperature and the water temperature rise slowly. Especially during long-term low-load operation under cold climate conditions, the water content in the engine oil accumulates continuously, causing engine oil emulsification. In severe cases, engine oil icing occurs, leading to low oil pressure, poor lubrication of friction pairs, and engine damage.

[0003] In the prior art, the problem of engine oil icing is solved by adjusting the opening temperature of the electronic thermostat at different ambient temperatures. The problem is that when the vehicle is running under low-temperature and low-load conditions, due to the heat dissipation of the warm air circuit, the engine water temperature reaches equilibrium at a very low state, and this technology cannot completely solve the problem of engine oil icing. The method of detecting the engine oil density in the oil pan to identify the risk of engine oil icing and then removing water through an engine oil heating device and a water storage device has the disadvantages of complex layout, high cost, and high control difficulty. Summary of the Invention

[0004] Based on this, the object of the present invention is to provide a method and system for preventing engine oil icing in hybrid electric vehicles to solve the deficiencies in the above prior art.

[0005] In a first aspect, the present invention provides a method for preventing engine oil icing in hybrid electric vehicles, the method comprising:

[0006] Collect vehicle operation information, and obtain the engine coolant temperature based on the vehicle operation information;

[0007] Judge whether the engine coolant temperature is lower than or equal to a first preset temperature threshold;

[0008] If the engine coolant temperature is lower than or equal to the first preset temperature threshold, then count the cumulative mileage of the engine's driving mileage under low-temperature and low-load conditions;

[0009] Judge whether the water temperature in the running mileage under the low-temperature and low-load conditions is greater than a second preset water temperature;

[0010] If the water temperature in the running mileage under the low-temperature and low-load conditions is greater than the second preset water temperature, then obtain the reduced mileage count of the final low-temperature driving mileage;

[0011] Calculate the final total low-temperature driving mileage based on the cumulative count of the low-temperature driving mileage and the reduced mileage count of the final low-temperature driving mileage;

[0012] Determine whether the total low-temperature driving mileage is greater than the measure target value threshold;

[0013] If the total low-temperature driving mileage is greater than the measure target value threshold, reduce or turn off the waterway heat exchange and increase the engine operating load.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By comparing the water temperature in the operating mileage under low-temperature and low-load conditions with the first preset water temperature, and obtaining the total low-temperature driving mileage, and comparing the total low-temperature driving mileage with the measure target value threshold, the risk of engine oil icing can be effectively judged. By reducing or turning off the waterway heat exchange and increasing the engine operating load, the water in the engine oil can be removed, the purpose of preventing engine oil icing can be achieved, the durability of the engine of the hybrid vehicle can be improved, and at the same time, the engine cost can be not increased.

[0015] Further, after the step of determining whether the engine coolant temperature is lower than or equal to the first preset temperature threshold, the method further includes:

[0016] If the engine coolant temperature is not lower than or equal to the first preset temperature threshold, do not trigger the accumulation of engine oil icing mileage.

[0017] Further, the step of obtaining the reduced count mileage of the final low-temperature driving mileage includes:

[0018] Obtain the reduced count of low-temperature driving mileage and the cumulative count of low-temperature driving mileage based on the operating mileage of the engine under low-temperature and low-load conditions;

[0019] Calculate the reduced count mileage of the final low-temperature driving mileage according to the cumulative count of low-temperature driving mileage and the reduced count of low-temperature driving mileage.

[0020] Further, the step of obtaining the reduced count of low-temperature driving mileage includes:

[0021] Obtain the water temperature at which the engine continuously starts;

[0022] Determine whether the water temperature at which the engine continuously starts is greater than the second preset water temperature;

[0023] If the water temperature at which the engine continuously starts is greater than the second preset water temperature, obtain the reduced count of low-temperature driving mileage.

[0024] Further, after the step of calculating the reduced count mileage of the final low-temperature driving mileage according to the cumulative count of low-temperature driving mileage and the reduced count of low-temperature driving mileage, the method further includes:

[0025] Determine whether the total low-temperature driving mileage is greater than the instrument target value threshold;

[0026] If the total low-temperature driving mileage is greater than the instrument target value threshold, a prompt is popped up in the instrument pop-up window.

[0027] Further, after the step of determining whether the total low-temperature driving mileage is greater than the measure target value threshold, the method further includes:

[0028] If the total low-temperature driving mileage is not greater than the measure target value threshold, the engine is made to continue working.

[0029] In a second aspect, the present invention further provides a control system for preventing the engine oil of a hybrid vehicle from freezing, and the system includes:

[0030] An acquisition and obtaining module, configured to acquire vehicle operation information and obtain the engine coolant temperature based on the vehicle operation information;

[0031] A first judgment module, configured to judge whether the engine coolant temperature is lower than or equal to a first preset temperature threshold;

[0032] A judgment and statistics module, configured to judge that if the engine coolant temperature is lower than or equal to the first preset temperature threshold, the cumulative mileage of the engine driving under low-temperature and low-load conditions is counted;

[0033] A second judgment module, configured to judge whether the water temperature in the operating mileage under the low-temperature and low-load conditions is greater than a second preset water temperature;

[0034] A judgment and obtaining module, configured to judge that if the water temperature in the operating mileage under the low-temperature and low-load conditions is greater than the second preset water temperature, the reduced mileage of the final low-temperature driving is obtained;

[0035] A calculation module, configured to calculate the total final low-temperature driving mileage according to the cumulative count of the low-temperature driving mileage and the reduced count of the final low-temperature driving mileage

[0036] A third judgment module, configured to judge whether the total final low-temperature driving mileage is greater than the measure target value threshold;

[0037] A judgment and execution module, configured to judge that if the final low-temperature driving mileage is greater than the measure target value threshold, the water path heat exchange is reduced or turned off and the engine operating load is increased.

[0038] Further, the calculation module includes:

[0039] An obtaining unit, configured to obtain the reduced count of the low-temperature driving mileage and the cumulative count of the low-temperature driving mileage based on the operating mileage of the engine under low-temperature and low-load conditions;

[0040] A calculation unit is configured to calculate the reduced mileage of the final low-temperature driving mileage according to the cumulative count of the low-temperature driving mileage and the reduced count of the low-temperature driving mileage.

[0041] In a third aspect, the present invention further provides a readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned method for preventing engine oil icing in a hybrid vehicle is implemented.

[0042] In a fourth aspect, the present invention further provides a vehicle, including a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, the above-mentioned method for preventing engine oil icing in a hybrid vehicle is implemented. Description of the Drawings

[0043] Figure 1 It is a flowchart of the method for preventing engine oil icing in a hybrid vehicle according to the first embodiment of the present invention;

[0044] Figure 2 It is a structural block diagram of the system for preventing engine oil icing in a hybrid vehicle according to the second embodiment of the present invention;

[0045] Figure 3 It is a structural diagram of the vehicle according to the third embodiment of the present invention.

[0046] Main Element Symbol Description:

[0047] 11. Acquisition and Obtaining Module; 12. First Judgment Module; 13. Judgment and Statistics Module; 14. Second Judgment Module; 15. Judgment and Obtaining Module; 16. Calculation Module; 17. Third Judgment Module; 18. Judgment and Execution Module;

[0048] 10. Memory; 20. Processor; 30. Computer Program.

[0049] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0050] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0051] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0052] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0053] Embodiment 1

[0054] Please refer to Figure 1 , which shows the method for preventing engine oil icing control in the first embodiment of the present invention. The method includes steps S1 to S8:

[0055] S1, collect vehicle operation information and obtain the engine coolant temperature based on the vehicle operation information;

[0056] It can be understood that the vehicle operation information is collected through the vehicle sensors. In this embodiment, it includes the engine coolant temperature and the engine oil temperature.

[0057] S2, determine whether the engine coolant temperature is lower than or equal to the first preset temperature threshold;

[0058] It should be explained that when the engine coolant temperature is lower than or equal to 30 degrees Celsius, the engine oil icing mileage accumulation function is triggered.

[0059] Furthermore, if the engine coolant temperature is not lower than or equal to the preset temperature threshold, the engine oil icing mileage accumulation is not triggered.

[0060] S3, if the engine coolant temperature is lower than or equal to the first preset temperature threshold, then count the cumulative mileage of the engine's driving mileage under low-temperature and low-load conditions;

[0061] It can be understood that when the engine coolant temperature is lower than or equal to 30 degrees Celsius, the engine oil icing mileage accumulation function is triggered to count the operating mileage of the engine under low-temperature and low-load conditions.

[0062] S4, determine whether the water temperature in the operating mileage under the low-temperature and low-load conditions is greater than the second preset water temperature;

[0063] It should be noted that in this embodiment, the second preset water temperature is 32 degrees Celsius.

[0064] S5. If the water temperature during the operating mileage under the low-temperature and low-load condition is greater than the second preset water temperature, obtain the reduced counting mileage of the final low-temperature driving mileage.

[0065] S6. Calculate the final total low-temperature driving mileage based on the cumulative counting of the low-temperature driving mileage and the reduced counting mileage of the final low-temperature driving mileage.

[0066] Specifically, step S6 includes steps S61 to S64:

[0067] S61. Obtain the reduced counting of the low-temperature driving mileage and the cumulative counting of the low-temperature driving mileage based on the operating mileage of the engine under the low-temperature and low-load condition.

[0068] It should be noted that in this embodiment, by obtaining the water temperature at which the engine continuously starts and determining whether the water temperature at which the engine continuously starts is greater than the second preset water temperature. In this embodiment, the second preset water temperature is 32 degrees Celsius. If the water temperature at which the engine continuously starts is greater than the second preset water temperature, obtain the reduced counting of the low-temperature driving mileage.

[0069] S62. Calculate the reduced counting mileage of the final low-temperature driving mileage based on the cumulative counting of the low-temperature driving mileage and the reduced counting of the low-temperature driving mileage.

[0070] S63. Determine whether the final total low-temperature driving mileage is greater than the instrument target value threshold.

[0071] S64. If the final total low-temperature driving mileage is greater than the instrument target value threshold, pop up a prompt in the instrument pop-up window.

[0072] It can be understood that the instrument pop-up window prompts the vehicle driver, so that the vehicle driver drives the vehicle, enabling the vehicle to operate under high-speed conditions, thereby being able to increase the operating load of the vehicle's engine to increase the oil temperature and effectively avoid oil freezing.

[0073] S7. Determine whether the final total low-temperature driving mileage is greater than the measure target value threshold.

[0074] Specifically, the method further includes: if the final low-temperature driving mileage is not greater than the measure target value threshold, keep the engine running continuously.

[0075] It can be understood that when the final low-temperature driving mileage is not greater than the measure target value threshold, it proves that there is no risk of oil freezing, so there is no need to operate the engine, and only need to keep the engine running continuously without taking any other measures.

[0076] S8, if the total low-temperature driving mileage is greater than the measure target value threshold, then reduce or turn off the waterway heat exchange and increase the engine operation load;

[0077] It should be noted that after it is obtained that the final low-temperature driving mileage is greater than the measure target value threshold, it is determined that there is a risk of engine oil icing. Therefore, by reducing or turning off the waterway heat exchange in the warm air circuit and increasing the engine operation load according to the battery SOC level. Among them, reducing or turning off the waterway heat exchange in the warm air circuit can effectively reduce the heat exchange efficiency of the engine oil and avoid continuous cooling of the engine oil. By increasing the engine operation load, the overall temperature can be increased, and thus the problem of engine oil icing can also be avoided. Thereby, it can be realized that without additionally increasing heating, water storage and other devices, the engine oil temperature can be limitedly increased, the problem of engine oil icing caused by long-term driving of hybrid vehicles under low-temperature and low-load conditions can be solved, and the purpose of removing water and eliminating the risk of engine oil icing can be achieved.

[0078] In summary, the method for preventing engine oil icing control in the above embodiments of the present invention compares the water temperature in the running mileage under low-temperature and low-load conditions with the first preset water temperature, and obtains the total low-temperature driving mileage. By comparing the final low-temperature driving mileage with the measure target value threshold, the risk of engine oil icing can be effectively judged. By reducing or turning off the waterway heat exchange and increasing the engine operation load, the water in the engine oil can be removed, the purpose of preventing engine oil icing can be achieved, the durability of the hybrid vehicle engine can be improved, and the engine cost can also be not increased.

[0079] Embodiment 2

[0080] The present invention also proposes a system for preventing engine oil icing in hybrid vehicles. Please refer to Figure 2 , which shows the system for preventing engine oil icing in hybrid vehicles in the second embodiment of the present invention. The system includes:

[0081] An acquisition module 11, configured to acquire vehicle operation information and obtain the engine coolant temperature based on the vehicle operation information;

[0082] A first judgment module 12, configured to judge whether the engine coolant temperature is lower than or equal to a first preset temperature threshold;

[0083] A judgment and statistics module 13, configured to judge that if the engine coolant temperature is lower than or equal to the first preset temperature threshold, then count the cumulative mileage of the engine driving under low-temperature and low-load conditions;

[0084] A second judgment module 14, configured to judge whether the water temperature in the running mileage under low-temperature and low-load conditions is greater than a second preset water temperature;

[0085] A judgment and acquisition module 15, configured to judge that if the water temperature in the driving mileage under the low-temperature and low-load condition is greater than the second preset water temperature, acquire the reduced counting mileage of the final low-temperature driving mileage;

[0086] A calculation module 16, configured to calculate the final total low-temperature driving mileage according to the cumulative count of the low-temperature driving mileage and the reduced counting mileage of the final low-temperature driving mileage

[0087] A third judgment module 17, configured to judge whether the final total low-temperature driving mileage is greater than the measure target value threshold;

[0088] A judgment and execution module 18, configured to judge that if the final low-temperature driving mileage is greater than the measure target value threshold, reduce or turn off the waterway heat exchange and increase the engine operating load.

[0089] In some alternative embodiments, the first judgment module 12 includes:

[0090] A judgment unit, configured to judge that if the engine coolant temperature is not lower than or equal to the preset temperature threshold, do not trigger the accumulation of the oil icing mileage.

[0091] In some alternative embodiments, the calculation module 16 includes:

[0092] An acquisition unit, configured to acquire the reduced counting of the low-temperature driving mileage and the cumulative counting of the low-temperature driving mileage based on the driving mileage of the engine under the low-temperature and low-load condition;

[0093] A calculation unit, configured to calculate the final total low-temperature driving mileage according to the cumulative counting of the low-temperature driving mileage and the reduced counting of the low-temperature driving mileage.

[0094] In some alternative embodiments, the acquisition unit includes:

[0095] A first acquisition subunit, configured to acquire the water temperature of the continuously starting engine;

[0096] A first judgment subunit, configured to judge whether the water temperature of the continuously starting engine is greater than the second preset water temperature;

[0097] A second acquisition subunit, configured to acquire the reduced counting of the low-temperature driving mileage if the water temperature of the continuously starting engine is greater than the second preset water temperature.

[0098] In some alternative embodiments, the third judgment module 17 includes:

[0099] A working unit, configured to make the engine continuously work if the final low-temperature driving mileage is not greater than the measure target value threshold.

[0100] In some alternative embodiments, the working unit includes:

[0101] A second judgment sub-unit, configured to judge whether the total low-temperature driving mileage is greater than the instrument target value threshold;

[0102] A pop-up sub-unit, configured to pop up a prompt in the instrument pop-up window if the total low-temperature driving mileage is greater than the instrument target value threshold.

[0103] The anti-icing control system for the engine oil of a hybrid vehicle provided in the second embodiment of the present invention has the same implementation principle and technical effects as those in the foregoing method embodiment. For a brief description, for the parts not mentioned in the device embodiment, reference may be made to the corresponding content in the foregoing method embodiment.

[0104] Embodiment III

[0105] The present invention further provides a vehicle. Please refer to Figure 3 , which shows the vehicle in the third embodiment of the present invention, including a memory 10, a processor 20, and a computer program 30 stored on the memory 10 and executable on the processor 20. When the processor 20 executes the program 30, the anti-icing control method for the engine oil of a hybrid vehicle as described above is implemented.

[0106] In specific implementation, the processor 20 collects vehicle operation information and obtains the engine coolant temperature based on the vehicle operation information;

[0107] The processor 20 judges whether the engine coolant temperature is lower than or equal to a first preset temperature threshold;

[0108] If the engine coolant temperature is lower than or equal to the first preset temperature threshold, the processor 20 counts the cumulative mileage of the engine running in a low-temperature and low-load condition;

[0109] The processor 20 judges whether the water temperature in the running mileage under the low-temperature and low-load condition is greater than a second preset water temperature;

[0110] If the water temperature in the running mileage under the low-temperature and low-load condition is greater than the second preset water temperature, the processor 20 obtains the reduced mileage count of the final low-temperature driving mileage;

[0111] The processor 20 calculates the total final low-temperature driving mileage based on the cumulative count of the low-temperature driving mileage and the reduced mileage count of the final low-temperature driving mileage;

[0112] The processor 20 judges whether the total final low-temperature driving mileage is greater than the measure target value threshold;

[0113] If the total low-temperature driving mileage is greater than the measure target value threshold, the processor 20 reduces or shuts off the waterway heat exchange and increases the engine operation load.

[0114] Among them, in some embodiments, the processor 20 may be an electronic control unit (Electronic Control Unit, abbreviated as ECU, also known as the vehicle computer), a central processing unit (Central Processing Unit, CPU), a controller, a microcontroller, a microprocessor or other data processing chips, and is used to run the program code stored in the memory 20 or process data, such as executing an access restriction program, etc.

[0115] Among them, the memory 10 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, a hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 10 may be an internal storage unit of the vehicle in some embodiments, such as the hard disk of the vehicle. The memory 10 may also be an external storage device of the vehicle in other embodiments, such as a plug-in hard disk equipped on the vehicle, a smart media card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. Further, the memory 10 may also include both an internal storage unit and an external storage device of the vehicle. The memory 10 can be used not only to store application software and various types of data installed in the vehicle, but also to temporarily store data that has been output or will be output.

[0116] It should be noted that Figure 3 The shown structure does not constitute a limitation on the vehicle. In other embodiments, the vehicle may include fewer or more components than shown, or combine certain components, or have a different component arrangement.

[0117] An embodiment of the present invention also proposes a readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the prevention of hybrid vehicle engine oil icing control method as described above.

[0118] Those skilled in the art will understand that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in combination with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0119] More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion (electronic device) having one or more wirings, a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then stored in a computer memory.

[0120] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0121] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A control method for preventing engine oil icing in a hybrid vehicle, characterized in that, The method includes: Collecting vehicle operation information and obtaining the engine coolant temperature based on the vehicle operation information; Judging whether the engine coolant temperature is lower than or equal to a first preset temperature threshold; If the engine coolant temperature is lower than or equal to the first preset temperature threshold, then counting the cumulative mileage of the engine's driving mileage under low-temperature and low-load conditions; Judging whether the water temperature in the operation mileage under the low-temperature and low-load conditions is greater than a second preset water temperature; If the water temperature in the operation mileage under the low-temperature and low-load conditions is greater than the second preset water temperature, then obtaining the reduced mileage count of the final low-temperature driving mileage; Calculating the total final low-temperature driving mileage based on the cumulative count of the low-temperature driving mileage and the reduced mileage count of the final low-temperature driving mileage; Judging whether the total final low-temperature driving mileage is greater than a measure target value threshold; If the total final low-temperature driving mileage is greater than the measure target value threshold, then reducing or closing the waterway heat exchange and increasing the engine operation load.

2. The method for preventing engine oil icing control of a hybrid vehicle according to claim 1, wherein, After the step of judging whether the engine coolant temperature is lower than or equal to the first preset temperature threshold, the method further includes: If the engine coolant temperature is not lower than or equal to the first preset temperature threshold, then not triggering the cumulative mileage of oil icing.

3. The control method for preventing engine oil icing of a hybrid vehicle according to claim 1, wherein, The step of calculating the total final low-temperature driving mileage based on the cumulative count of the low-temperature driving mileage and the reduced mileage count of the final low-temperature driving mileage includes: Obtaining the reduced mileage count of the low-temperature driving mileage and the cumulative count of the low-temperature driving mileage based on the operation mileage of the engine under low-temperature and low-load conditions; Calculating the reduced mileage count of the final low-temperature driving mileage based on the cumulative count of the low-temperature driving mileage and the reduced mileage count of the low-temperature driving mileage.

4. The prevention method for engine oil icing control of a hybrid vehicle according to claim 3, characterized in that The step of obtaining the reduced mileage count of the low-temperature driving mileage includes: Obtaining the water temperature of continuous engine startup; Judging whether the water temperature of continuous engine startup is greater than the second preset water temperature; If the water temperature of continuous engine startup is greater than the second preset water temperature, then obtaining the reduced mileage count of the low-temperature driving mileage.

5. The method for preventing engine oil icing control of a hybrid vehicle according to claim 3, wherein After the step of calculating the reduced mileage count of the final low-temperature driving mileage based on the cumulative count of the low-temperature driving mileage and the reduced mileage count of the low-temperature driving mileage, the method further includes: Judging whether the total final low-temperature driving mileage is greater than an instrument target value threshold; If the total final low-temperature driving mileage is greater than the instrument target value threshold, then popping up a prompt in the instrument pop-up window.

6. The method for preventing engine oil icing control of a hybrid vehicle according to claim 1, wherein After the step of judging whether the total final low-temperature driving mileage is greater than the measure target value threshold, the method further includes: If the total final low-temperature driving mileage is not greater than the measure target value threshold, then keeping the engine running continuously.

7. A control system for preventing engine oil icing in a hybrid vehicle, characterized in that, The system includes: A collection and acquisition module, configured to collect vehicle operation information and obtain the engine coolant temperature based on the vehicle operation information; A first judgment module, configured to judge whether the engine coolant temperature is lower than or equal to a first preset temperature threshold; A judgment and statistics module, configured to judge that if the engine coolant temperature is lower than or equal to the first preset temperature threshold, then count the cumulative mileage of the engine's driving mileage under low-temperature and low-load conditions; A second judgment module, configured to judge whether the water temperature in the driving mileage under the low-temperature and low-load condition is greater than a second preset water temperature; A judgment and acquisition module, configured to judge that if the water temperature in the driving mileage under the low-temperature and low-load condition is greater than the second preset water temperature, then acquire the reduced counting mileage of the final low-temperature driving mileage; A calculation module, configured to calculate the final total low-temperature driving mileage according to the cumulative counting of the low-temperature driving mileage and the reduced counting mileage of the final low-temperature driving mileage A third judgment module, configured to judge whether the final total low-temperature driving mileage is greater than a measure target value threshold; A judgment and execution module, configured to judge that if the final low-temperature driving mileage is greater than the measure target value threshold, then reduce or turn off the waterway heat exchange and increase the engine operation load.

8. The anti-icing control system for engine oil of a hybrid vehicle according to claim 7, characterized in that The calculation module includes: An acquisition unit, configured to acquire the reduced counting of the low-temperature driving mileage and the cumulative counting of the low-temperature driving mileage based on the driving mileage of the engine under the low-temperature and low-load condition; A calculation unit, configured to calculate the reduced counting mileage of the final low-temperature driving mileage according to the cumulative counting of the low-temperature driving mileage and the reduced counting of the low-temperature driving mileage.

9. A readable storage medium, on which a computer program is stored, characterized in that, When the program is executed by a processor, it implements the method for preventing engine oil icing control of a hybrid vehicle as described in any one of claims 1 to 6.

10. A vehicle, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method for preventing engine oil icing control of a hybrid vehicle as described in any one of claims 1-6.

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