Control method of extended-range vehicle, electronic equipment and storage medium

Abstract

The invention relates to the technical field of vehicles, and discloses a control method of an extended-range vehicle, electronic equipment and a storage medium, and the method comprises the following steps: obtaining the current oil pressure of engine oil of an engine; acquiring the current residual electric quantity of the battery pack, and acquiring the current required electric quantity required by the vehicle in the residual driving mileage; controlling the working state of the vehicle based on the current residual electric quantity and the current required electric quantity; wherein when the current oil pressure is lower than the preset oil pressure, the remaining electric quantity, the required electric quantity and the working state of the vehicle have a preset relation, and the working state of the vehicle comprises the working state of the range extender. Therefore, when the oil pressure of the engine is low, control over the vehicle is achieved by combining the current remaining electric quantity and the current required electric quantity of the vehicle, then control over the range extender is achieved, and the actual requirements of a user for control over the range extender under different vehicle electricity consumption scenes are met.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and more particularly to a control method, an electronic device, and a storage medium for a range-extended vehicle. Background Art

[0002] The engine is the heart of an automobile. There are many metal surfaces in the engine that move relative to each other through friction. These components move at high speeds and in a harsh environment, with working temperatures reaching 400°C to 600°C. Under such harsh working conditions, only qualified lubricating oil can reduce the wear of engine parts and extend their service life. Otherwise, it is easy to cause damage to the components. Therefore, engine oil plays an important role during the operation of the engine.

[0003] Currently, when the engine oil pressure of a range-extended vehicle is too low, the vehicle automatically or the user manually controls the range extender to stop running. However, in many scenarios, when the engine oil pressure is low, the user does not want the range extender to directly shut down, but rather needs to comprehensively determine according to various other conditions to meet different actual requirements. Summary of the Invention

[0004] In view of the above problems, the present application provides a control method, an electronic device, and a storage medium for a range-extended vehicle. When the engine oil pressure is low, the vehicle is controlled by combining the current remaining power of the vehicle battery and the current required power, thereby realizing the control of the range extender, which meets the actual requirements of users for range extender control in different vehicle power consumption scenarios.

[0005] A first aspect of the present application provides a control method for a range-extended vehicle, including: obtaining the current oil pressure of the engine oil; obtaining the current remaining power of the battery pack and the current required power for the remaining driving mileage of the vehicle; controlling the working state of the vehicle based on the current remaining power and the current required power; wherein, when the current oil pressure is lower than a preset oil pressure, there is a preset relationship among the remaining power, the required power, and the working state of the vehicle, and the working state of the vehicle includes the working state of the range extender.

[0006] In some specific embodiments, the step of controlling the working state of the vehicle based on the current remaining power and the current required power includes: obtaining the current power difference between the current remaining power and the current required power; controlling the working state of the vehicle according to the current power difference and the current remaining power; wherein, there is a preset relationship among the current remaining power, the current power difference, and the working state of the vehicle.

[0007] In some specific embodiments, the steps of controlling the working state of the vehicle according to the current power difference and the current remaining power include: if the current remaining power is greater than or equal to the preset remaining power and the current power difference is greater than or equal to the preset power difference, control the range extender to be in the shutdown state and control the output power of the vehicle not to be higher than the preset maximum power; if the current remaining power is greater than or equal to the preset remaining power and the current power difference is less than the preset power difference, control the range extender to be in the shutdown state and control the vehicle to generate a range extender warning message; if the current remaining power is less than the preset remaining power, control the vehicle to generate a range extender warning message.

[0008] In some specific embodiments, the steps of controlling the working state of the vehicle based on the current remaining power and the current required power include: obtaining the current power difference between the current remaining power and the current required power; if the current power difference is greater than or equal to the preset power difference, control the range extender to be in the shutdown state; if the current power difference is less than the preset power difference, control the working state of the range extender according to the current oil pressure difference between the preset oil pressure and the current oil pressure; wherein, there is a preset relationship between the oil pressure difference and the working state of the range extender.

[0009] In some specific embodiments, the steps of controlling the working state of the range extender according to the current oil pressure difference between the preset oil pressure and the current oil pressure include: if the current oil pressure difference between the preset oil pressure and the current oil pressure is greater than or equal to the preset oil pressure difference, control the range extender to be in the shutdown state; if the current oil pressure difference is less than the preset oil pressure difference, limit the working power and working time of the range extender.

[0010] In some specific embodiments, the steps of limiting the working power and working time of the range extender if the current oil pressure difference is less than the preset oil pressure difference include: if the current oil pressure difference is less than the preset oil pressure difference, determine the maximum working power and the longest working time according to the current power difference; wherein, there is a preset relationship between the power difference and the maximum working power and the longest working time; control the power of the range extender not to be higher than the maximum working power and the working time not to be longer than the longest working time.

[0011] In some specific embodiments, after the step of obtaining the current oil pressure of the engine oil, it includes: if the current oil pressure is lower than the target oil pressure, determine the current oil pressure difference between the target oil pressure and the current oil pressure, and determine the oil pressure diagnosis threshold according to the current engine speed and the current load; wherein, there is a preset relationship between the combination of the speed and the load and the oil pressure diagnosis threshold; if the current oil pressure difference is higher than the oil pressure diagnosis threshold, determine that the current oil pressure is lower than the preset oil pressure.

[0012] In some specific embodiments, the method further includes: obtaining the current rotational speed and the current water temperature of the engine; determining a target oil pressure according to the current rotational speed and the current water temperature; wherein, there is a preset relationship between the combination of the rotational speed and the water temperature and the target oil pressure.

[0013] On the other hand, this application provides an electronic device, including: a processor; a memory for storing a computer program, which when executed by the processor implements the control method of the range-extended vehicle in any one of the above.

[0014] On another aspect, this application provides a computer-readable storage medium, characterized in that a computer program is stored in the storage medium, which when executed by the processor implements the control method of the range-extended vehicle as in any one of the above.

[0015] The beneficial technical effects that this application at least has: Based on the control method, electronic device and storage medium of the range-extended vehicle provided by this application, this method includes: obtaining the current oil pressure of the engine oil; obtaining the current remaining power of the battery pack and the current required power of the vehicle for the remaining driving mileage; based on the current remaining power and the current required power, controlling the working state of the vehicle; wherein, when the current oil pressure is lower than the preset oil pressure, there is a preset relationship between the remaining power, the required power and the working state of the vehicle, and the working state of the vehicle includes the working state of the range extender. Therefore, when the oil pressure of the engine is low, the control of the vehicle is realized by combining the current remaining power and the current required power of the vehicle, and then the control of the range extender is realized, which meets the actual needs of users for the control of the range extender in different vehicle power consumption scenarios.

[0016] The above description is only an overview of the technical solutions of the embodiments of this application. In order to be able to understand the technical means of the embodiments of this application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of this application more obvious and understandable, the following specifically enumerates the specific implementation manners of this application. Description of the Drawings

[0017] The drawings are only used to illustrate the embodiments and are not considered to be a limitation of this application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0018] Figure 1 is a schematic flowchart of an embodiment of the control method of the range-extended vehicle provided by this application;

[0019] Figure 2 is a schematic flowchart of another embodiment of the control method of the range-extended vehicle provided by this application;

[0020] Figure 3 is a schematic flowchart of yet another embodiment of the control method of the range-extended vehicle provided by this application;

[0021] Figure 4 is a schematic flowchart of another embodiment of the control method for a range - extended vehicle provided by this application;

[0022] Figure 5 is a schematic flowchart of another embodiment of the control method for a range - extended vehicle provided by this application;

[0023] Figure 6 is a schematic flowchart of another embodiment of the control method for a range - extended vehicle provided by this application;

[0024] Figure 7 is a schematic flowchart of another embodiment of the control method for a range - extended vehicle provided by this application;

[0025] Figure 8 is a schematic flowchart of another embodiment of the control method for a range - extended vehicle provided by this application;

[0026] Figure 9 is a schematic structural framework diagram of an embodiment of an electronic device provided by this application;

[0027] Figure 10 is a schematic structural framework diagram of an embodiment of a computer - readable storage medium provided by this application. Detailed Embodiments

[0028] Hereinafter, exemplary embodiments of the present application will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0029] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. Additionally, the meaning of "and / or" that appears throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where both A and B are satisfied simultaneously. Moreover, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0030] The first aspect of the present application provides a control method for a range-extended vehicle. This method is applied to a range-extended vehicle that generates electricity through a range extender. Figure 1 It is a schematic flowchart of an embodiment of the control method for a range-extended vehicle provided by the present application. Combining Figure 1 , this method includes the following steps:

[0031] S101: Obtain the current oil pressure of the engine oil.

[0032] It should be understood that the engine referred to in this embodiment is the engine of the range extender. The engine oil is mainly located in the oil pan of the engine. The oil pan is located at the bottom of the engine and is mainly used to store engine oil. The engine oil can be pumped to various parts of the engine that need lubrication, such as the crankshaft, connecting rod, piston, camshaft, etc. After lubrication, it flows back to the oil pan to form a cycle.

[0033] The current oil pressure of the engine is the oil pressure of the engine oil at the current moment. For the specific method of obtaining the engine oil pressure, it can be directly obtained through an oil pressure sensor or obtained through an oil pressure alarm. Among them, there is a mechanical switch in the oil pressure alarm. When the oil pressure is lower than a certain pressure, this mechanical switch connects to form a continuous voltage drop signal. When this voltage drop signal is detected, it can be considered that the oil pressure is lower than a certain oil pressure, that is, the detection of the oil pressure can be realized.

[0034] In some application scenarios, the premise for executing this step is that the engine is in a working state, that is, the range extender is in a working state.

[0035] S102: Obtain the current remaining power of the battery pack and obtain the current required power of the vehicle for the remaining driving mileage.

[0036] It should be understood that there is no order of execution between this step and the above step S101, and the two can be executed simultaneously.

[0037] Among them, the current remaining power of the battery pack can be detected by a sensor or directly obtained through relevant information of the controller, and no specific limitation is made here. The current required power of the vehicle for the remaining driving mileage can be obtained based on road section information and the vehicle's own configuration information, etc. Among them, the road section information, etc. can all be obtained through the vehicle's navigation information.

[0038] S103: Control the working state of the vehicle based on the current remaining power and the current required power; where when the current oil pressure is lower than the preset oil pressure, there is a preset relationship among the remaining power, the required power, and the working state of the vehicle, and the working state of the vehicle includes the working state of the range extender.

[0039] It should be understood that during the use of the engine, due to factors such as wear and tear during use and leakage caused by faults, the oil pressure of the engine may decrease, resulting in a decrease in the current oil pressure. The preset oil pressure is an oil pressure set in advance according to actual needs, usually a relatively low oil pressure.

[0040] If the current oil pressure is lower than the preset oil pressure, it indicates that the oil pressure of the engine is low. At this time, if the engine continues to run, it may cause abnormal operation of the engine and may reduce the lifespan of the engine. Therefore, when it is detected that the current oil pressure is lower than the preset oil pressure, we need to consider whether to control the engine to stop running, that is, consider whether to control the range extender to stop running.

[0041] In this embodiment, when the current oil pressure is lower than the preset oil pressure, the range extender will not be directly controlled to stop running. Instead, the current remaining power of the battery pack and the current required power for the remaining driving mileage of the vehicle are comprehensively considered to ensure that the subsequent control of the vehicle and the range extender meets the actual needs of the user in different vehicle usage scenarios.

[0042] It should be understood that the current remaining power of the battery pack reflects the real-time power of the battery pack, that is, it reflects the real-time endurance ability of the vehicle. The current required power reflects the power required for the vehicle to reach the destination in the current driving scenario. These two factors greatly affect the vehicle's demand for the use of the range extender. For example, when the current remaining power is low, when the required power is high, and when the current remaining power is less than the required power consumption, the user's demand for the use of the range extender during the remaining driving mileage is greater. Although when the oil pressure of the engine is low, for the sake of protecting the engine, it is more inclined to immediately control the range extender to stop. However, in the case of a high demand for the use of the range extender, the user prefers the range extender to run.

[0043] In this embodiment, by pre-establishing a preset relationship among the remaining power, the required power, and the working state of the vehicle, the balance between protecting the engine and meeting the demand for the use of the range extender can be achieved. Therefore, the working state of the vehicle determined through the current remaining power, the current required power, and the preset relationship balances the protection of the engine and the use of the range extender, meeting the actual needs of the user for the control of the range extender in different vehicle power usage scenarios (the current remaining power and the current required power determine the vehicle's power usage scenario).

[0044] In summary, based on the above embodiments, when the oil pressure of the engine is low, the vehicle is controlled by combining the current remaining power and the current required power of the vehicle, and then the control of the range extender is realized, meeting the actual needs of the user for the control of the range extender in different vehicle power usage scenarios.

[0045] Figure 2 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by the present application.

[0046] Combine Figure 2 , in some specific embodiments, the step of controlling the working state of the vehicle based on the current remaining power and the current required power, that is, the above-mentioned step S103, includes:

[0047] S201: Obtain the current power difference between the current remaining power and the current required power.

[0048] This embodiment further defines how to control the working state of the vehicle based on the current remaining power and the current required power, that is, to control the working state of the vehicle through the current power difference between the current remaining power and the current required power.

[0049] It should be understood that the current power difference is the difference obtained by subtracting the current required power from the current remaining power. Generally, the current power difference will be greater than 0, but there will also be cases where the current power difference is less than 0. The current power difference reflects the remaining power of the battery pack when driving to the end without starting the range extender for the remaining driving mileage. Therefore, the current power difference has a greater impact on the vehicle's demand for starting the range extender. For example, when the current power difference is large, it means that there is more remaining power when driving to the end, and at this time, the demand for starting the range extender is small. When the current power difference is small, it means that there is less remaining power when driving to the end, and at this time, the demand for starting the range extender is large. Therefore, the current power difference can be an important factor in controlling the working state of the vehicle.

[0050] S202: Control the working state of the vehicle according to the current power difference and the current remaining power; wherein, there is a preset relationship among the current remaining power, the current power difference, and the working state of the vehicle.

[0051] After obtaining the current power difference, the current remaining power is further introduced. It should be understood that the current remaining power can also reflect the vehicle's demand for starting the range extender. For example, when the current remaining power is large, generally the demand for starting the range extender is small, and when the current remaining power is small, generally the demand for starting the range extender is large.

[0052] A preset relationship is formed and stored according to the actual needs among the current remaining power, the current power difference, and the working state of the vehicle. After obtaining the current remaining power and the current power difference, the corresponding working state of the vehicle can be directly obtained according to the preset relationship.

[0053] In summary, this embodiment determines the corresponding working state of the vehicle through the current power difference and the current remaining power, making the determined working state of the vehicle more in line with the actual needs of the vehicle for the working state of the range extender, and thus meeting the actual needs for the working state of the range extender in different application scenarios.

[0054] Figure 3 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by this application.

[0055] Combined with Figure 3 , in some specific embodiments, the step of controlling the working state of the vehicle according to the current power difference and the current remaining power, that is, the above step S202, includes:

[0056] S301: If the current remaining power is greater than or equal to the preset remaining power and the current power difference is greater than or equal to the preset power difference, then control the range extender to be in a shutdown state and control the output power of the vehicle not to be higher than the preset maximum power.

[0057] It should be understood that the three steps of this embodiment are three parallel steps and there is no order of precedence. The preset remaining power is set in advance according to actual needs. When the current remaining power is greater than or equal to the preset remaining power, it means that the current remaining power of the battery pack is relatively large. In some application scenarios, the preset remaining power can be 20%, but it is not limited thereto. The preset power difference is also set in advance according to actual needs. When the current power difference is greater than the preset power difference, it means that there is still a relatively large amount of power remaining in the battery pack after the vehicle has traveled the remaining mileage (that is, the remaining power is the current power difference). In some application scenarios, the preset power difference is 0. At this time, when the current power difference is greater than or equal to the preset power difference, it means that the vehicle can travel the remaining mileage without the range extender working. In some application scenarios, the preset power difference can be greater than 0 and can be the minimum power that a battery pack should be greater than for a long time (when it is greater than the minimum power, it is beneficial to the life of the battery pack). For example, the preset power difference can be set to 5%.

[0058] If the current remaining power is greater than or equal to the preset remaining power and the current power difference is greater than or equal to the preset power difference, it means that the current remaining power of the vehicle is still relatively large and it can travel the remaining mileage without starting the range extender. In this case, the range extender can be not started, that is, control the range extender of the vehicle to be in a shutdown state. Moreover, when the output power of the vehicle is too high, it is easy to cause too much power consumption and a relatively low estimated remaining required power, which may cause the result that was originally estimated to be able to reach the end point to become unable to reach the end point. Therefore, in order to ensure that the vehicle can travel to the end point based on the remaining power, the output power of the vehicle is restricted at this time (that is, the output power of the battery pack is restricted), that is, control the output power of the vehicle not to be higher than the preset maximum power. Among them, the preset maximum power can be set according to actual needs and can be a relatively low power.

[0059] S302: If the current remaining power is greater than or equal to the preset remaining power and the current power difference is less than the preset power difference, then control the range extender to be in a shutdown state and control the vehicle to generate a range extender warning message.

[0060] If the current remaining power is greater than or equal to the preset remaining power and the current power difference is less than the preset power difference, it indicates that the vehicle has a relatively large amount of remaining power currently. However, without starting the range extender, the vehicle cannot reach the end point, or even if it reaches the end point, the remaining power of the battery pack is in an unhealthy state.

[0061] In this case, since the battery pack has a relatively large amount of remaining power, the range extender can be directly controlled to be in the shutdown state. However, since the final power may not be sufficient to support driving to the end point, it is necessary to remind the user through the range extender warning message that the range extender will be in the shutdown state, and the user needs to process the range extender and charge the vehicle.

[0062] S303: If the current remaining power is less than the preset remaining power, control the vehicle to generate a range extender warning message.

[0063] When the current remaining power is less than the preset remaining power, it indicates that the remaining power of the battery pack is relatively low. At this time, regardless of whether the remaining power supports driving the whole journey, a warning message needs to be generated to remind the user to process the range extender and charge the vehicle. At this time, there is no specific limit on whether the range extender is shut down, and it can be set according to the actual situation.

[0064] Figure 4 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by the present application.

[0065] Combined with Figure 4 , in some specific embodiments, the step of controlling the working state of the vehicle based on the current remaining power and the current required power, that is, the above step S103, includes:

[0066] S401: Obtain the current power difference between the current remaining power and the current required power.

[0067] The present application provides another way to control the working state of the vehicle through the current remaining power and the current required power. This embodiment also needs to obtain the current power difference between the current remaining power and the current required power, and further control the range extender according to the current power difference.

[0068] S402: If the current power difference is greater than or equal to the preset power difference, control the range extender to be in the shutdown state.

[0069] When the current power difference is greater than or equal to the preset power difference, it indicates that the remaining power of the battery pack can support driving to the end point. At this time, for the safety and lifespan of the range extender, control the range extender to be in the shutdown state.

[0070] S403: If the current power difference is less than the preset power difference, then control the operating state of the range extender according to the current oil pressure difference between the preset oil pressure and the current oil pressure; wherein, there is a preset relationship between the oil pressure difference and the operating state of the range extender.

[0071] When the current power difference is less than the preset power difference, it indicates that the remaining power of the battery pack cannot support driving to the end, or even if driving to the end, the remaining power of the battery pack is in an unhealthy state. In this embodiment, not only the lifespan of the range extender needs to be considered, but also the user's demand for endurance.

[0072] It should be understood that since the preset oil pressure is higher than the current oil pressure, the current oil pressure difference between the preset oil pressure and the current oil pressure is greater than 0. And the current oil pressure difference can reflect the magnitude of the current oil pressure, that is, the greater the current oil pressure difference, the smaller the current oil pressure. Therefore, the current oil pressure difference actually reflects the magnitude of the current oil pressure, that is, it reflects the degree of influence on the lifespan of the range extender when the range extender is working.

[0073] In this embodiment, by using the current oil pressure difference to control the range extender, it can achieve a balance between protecting the range extender and vehicle endurance, meeting the actual needs of users.

[0074] Figure 5 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by the present application.

[0075] Combined with Figure 5 , in some specific embodiments, the step of controlling the operating state of the range extender according to the current oil pressure difference between the preset oil pressure and the current oil pressure, that is, the above step S403 includes:

[0076] S501: If the current oil pressure difference between the preset oil pressure and the current oil pressure is greater than or equal to the preset oil pressure difference, then control the range extender to be in a shutdown state.

[0077] The preset oil pressure difference is set in advance according to actual needs. If the current oil pressure difference between the preset oil pressure and the current oil pressure is greater than or equal to the preset oil pressure difference, it indicates that the current oil pressure is very low. At this time, starting the range extender has a greater impact on the safety and lifespan of the range extender. Therefore, in order to focus on protecting the range extender, control the range extender to be in a shutdown state.

[0078] S502: If the current oil pressure difference is less than the preset oil pressure difference, then limit the operating power and operating time of the range extender.

[0079] If the current oil pressure difference is less than the preset oil pressure difference, it indicates that although the current oil pressure is relatively low, it is not extremely low. At this time, in order to focus on the vehicle's endurance, the range extender can be allowed to operate. However, at the same time, in order to achieve a certain degree of protection for the range extender, it is necessary to limit the working power and working time of the range extender.

[0080] Figure 6 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by the present application.

[0081] Combined with Figure 6 In some specific embodiments, the step of limiting the working power and working time of the range extender when the current oil pressure difference is less than the preset oil pressure difference, that is, the above step S502, includes:

[0082] S601: If the current oil pressure difference is less than the preset oil pressure difference, determine the maximum working power and the longest working time according to the current power difference; wherein, there is a preset relationship between the power difference and the maximum working power and the longest working time.

[0083] Among them, the relationship between the power difference and the maximum working power and the longest working time can be preset to obtain a preset relationship. In the preset relationship, the greater the power difference, the smaller the corresponding maximum working power and the shorter the corresponding longest working time.

[0084] S602: Control the power of the range extender not to be higher than the maximum working power, and the working time not to be longer than the longest working time.

[0085] After determining the maximum working power and the longest working time, during the operation of the range extender, the power of the range extender can be controlled not to be higher than the maximum working power and the working time not to be longer than the longest working time, so as to specifically implement the limitation of power and working time.

[0086] Figure 7 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by the present application.

[0087] Combined with Figure 7 In some specific embodiments, after the step of obtaining the current oil pressure of the engine oil, that is, after the above step S101, it includes:

[0088] S701: If the current oil pressure is lower than the target oil pressure, determine the current oil pressure difference between the target oil pressure and the current oil pressure, and determine the oil pressure diagnosis threshold according to the current speed and current load of the engine; wherein, there is a preset relationship between the combination of speed and load and the oil pressure diagnosis threshold.

[0089] In this embodiment, after obtaining the current oil pressure, some operating parameters of the range extender are further used to determine whether the current oil pressure is lower than the preset oil pressure. Among them, the current oil pressure described in this embodiment may be the oil pressure obtained by an oil pressure sensor.

[0090] Among them, the target oil pressure may be a pre-set value or a value calculated in real time through some variable parameters, and no specific limitation is made here.

[0091] When the current oil pressure is lower than the target oil pressure, an oil pressure diagnosis threshold is further determined according to the current engine speed and the current load. The current engine speed and the current load can be obtained by sensors or relevant controllers. The current load may be the current torque of the engine. The corresponding relationship between the combination of the engine speed and the load and the oil pressure diagnosis threshold is pre-set to form a preset corresponding relationship. Therefore, the oil pressure diagnosis threshold can be directly obtained according to the current engine speed, the current load, and the preset relationship.

[0092] S702: If the current oil pressure difference is higher than the oil pressure diagnosis threshold, it is determined that the current oil pressure is lower than the preset oil pressure.

[0093] After obtaining the oil pressure diagnosis threshold, the current oil pressure difference is further compared with the oil pressure diagnosis threshold. If the current oil pressure difference is higher than the oil pressure diagnosis threshold, it indicates that the current oil pressure is relatively low. At this time, it is considered that the current oil pressure is lower than the preset oil pressure. It should be understood that the preset oil pressure in this embodiment is actually a floating value determined based on factors such as the current engine speed and the current load.

[0094] Figure 8 It is a schematic flowchart of another embodiment of the control method for a range-extended vehicle provided by the present application.

[0095] Combined with Figure 8 , in some specific embodiments, this method further includes:

[0096] S801: Obtain the current engine speed and the current coolant temperature of the engine.

[0097] This embodiment limits the determination method of the target oil pressure, that is, the target oil pressure is determined according to these two variable parameters: the current engine speed and the current coolant temperature.

[0098] Among them, the current coolant temperature of the engine, that is, the current temperature of the engine coolant, can be obtained in real time by a sensor or by a controller, etc., and no specific limitation is made here.

[0099] S802: Determine the target oil pressure according to the current engine speed and the current coolant temperature; among them, there is a preset relationship between the combination of the engine speed and the coolant temperature and the target oil pressure.

[0100] Among them, the relationship between the combination of the rotational speed and the water temperature and the target oil pressure is set according to actual requirements to form a preset relationship. After obtaining the current rotational speed and the current water temperature, the target oil pressure can be directly obtained based on this preset relationship.

[0101] In some application scenarios, when the current rotational speed remains unchanged, the higher the current water temperature, the higher the corresponding target oil pressure; when the current water temperature remains unchanged, the higher the current rotational speed, the higher the corresponding target oil pressure.

[0102] On the other hand, the present application provides an electronic device, including: a processor; a memory for storing a computer program, and when the computer program is executed by the processor, it implements the control method of the range-extended vehicle in any one of the above embodiments.

[0103] Figure 9 It is a structural framework schematic diagram of an embodiment of the electronic device 500 provided by the present application.

[0104] Combined Figure 9 , in some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502. The central processing unit 501 is the processor, and the read-only memory (ROM) 502 is the memory. The central processing unit 501 can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 into the random access memory (RAM) 503, such as executing the method in the above embodiments. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other through a bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0105] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including, for example, a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom can be installed into the storage section 508 as needed.

[0106] Specifically, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 509, and / or installed from the removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0107] Another aspect of the present application provides a computer-readable storage medium 40, Figure 10 which is a schematic structural framework diagram of an embodiment of the computer-readable storage medium 40 provided by the present application.

[0108] Combined with Figure 10 , a computer program 41 is stored on the computer-readable storage medium 40, and when the computer program 41 is executed by a processor, it implements the control method of the extended-range vehicle in any of the above embodiments.

[0109] It should be noted that the computer-readable medium 40 shown in the embodiments of the present application may be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. The computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more 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), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium may be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, the computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0110] In summary, based on the control method, electronic device, and storage medium of the range-extended vehicle provided by the present application, this method includes: obtaining the current oil pressure of the engine oil; obtaining the current remaining power of the battery pack, and obtaining the current required power of the vehicle for the remaining driving mileage; controlling the working state of the vehicle based on the current remaining power and the current required power; wherein, when the current oil pressure is lower than the preset oil pressure, there is a preset relationship among the remaining power, the required power, and the working state of the vehicle, and the working state of the vehicle includes the working state of the range extender. Therefore, when the oil pressure of the engine is low, the control of the vehicle is realized by combining the current remaining power and the current required power of the vehicle, and then the control of the range extender is realized, which meets the actual requirements of users for the control of the range extender in different vehicle power consumption scenarios.

[0111] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation of the present application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope required by the claims.

Claims

1. A control method for a range-extended vehicle, characterized in that Including: Obtain the current oil pressure of the engine oil; Obtain the current remaining power of the battery pack, and obtain the current required power of the vehicle for the remaining driving mileage; Based on the current remaining power and the current required power, control the working state of the vehicle; wherein, when the current oil pressure is lower than the preset oil pressure, there is a preset relationship among the remaining power, the required power and the working state of the vehicle, and the working state of the vehicle includes the working state of the range extender.

2. The control method of the range-extended vehicle according to claim 1, characterized in that The step of controlling the working state of the vehicle based on the current remaining power and the current required power includes: Obtain the current power difference between the current remaining power and the current required power; Control the working state of the vehicle according to the current power difference and the current remaining power; wherein, there is a preset relationship among the current remaining power, the current power difference and the working state of the vehicle.

3. The control method of the range-extended vehicle according to claim 2, characterized in that The step of controlling the working state of the vehicle according to the current power difference and the current remaining power includes: If the current remaining power is greater than or equal to the preset remaining power and the current power difference is greater than or equal to the preset power difference, control the range extender to be in a shutdown state and control the output power of the vehicle not to exceed the preset maximum power; If the current remaining power is greater than or equal to the preset remaining power and the current power difference is less than the preset power difference, control the range extender to be in a shutdown state and control the vehicle to generate a range extender warning message; If the current remaining power is less than the preset remaining power, control the vehicle to generate a range extender warning message.

4. The control method of the range-extended vehicle according to claim 1, characterized in that The step of controlling the working state of the vehicle based on the current remaining power and the current required power includes: Obtain the current power difference between the current remaining power and the current required power; If the current power difference is greater than or equal to the preset power difference, control the range extender to be in a shutdown state; If the current power difference is less than the preset power difference, control the working state of the range extender according to the current oil pressure difference between the preset oil pressure and the current oil pressure; wherein, there is a preset relationship between the oil pressure difference and the working state of the range extender.

5. The control method of the vehicle range extender according to claim 4, characterized in that The step of controlling the working state of the range extender according to the current oil pressure difference between the preset oil pressure and the current oil pressure includes: If the current oil pressure difference between the preset oil pressure and the current oil pressure is greater than or equal to the preset oil pressure difference, control the range extender to be in a shutdown state; If the current oil pressure difference is less than the preset oil pressure difference, limit the working power and working time of the range extender.

6. The control method of the vehicle range extender according to claim 5, characterized in that If the current oil pressure difference is less than the preset oil pressure difference, the steps of restricting the working power and working time of the range extender include: If the current oil pressure difference is less than the preset oil pressure difference, determine the maximum working power and the longest working time according to the current power difference; wherein, there is a preset relationship between the power difference and the maximum working power and the longest working time; Control the power of the range extender not to be higher than the maximum working power, and the working time not to be longer than the longest working time.

7. The control method of the vehicle range extender according to claim 1, wherein: After the step of obtaining the current oil pressure of the engine oil, it includes: If the current oil pressure is lower than the target oil pressure, determine the current oil pressure difference between the target oil pressure and the current oil pressure, and determine the oil pressure diagnosis threshold according to the current speed and current load of the engine; wherein, there is a preset relationship between the combination of the speed and the load and the oil pressure diagnosis threshold; If the current oil pressure difference is higher than the oil pressure diagnosis threshold, determine that the current oil pressure is lower than the preset oil pressure.

8. The control method of the vehicle range extender according to claim 7, characterized in that, The method further includes: Obtain the current speed and the current water temperature of the engine; Determine the target oil pressure according to the current speed and the current water temperature; wherein, there is a preset relationship between the combination of the speed and the water temperature and the target oil pressure.

9. An electronic device, characterized in that, It includes: A processor; A memory for storing a computer program, and when the computer program is executed by the processor, it implements the control method of the range-extended vehicle according to any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer program is stored in the storage medium, and when the computer program is executed by the processor, it implements the control method of the range-extended vehicle according to any one of claims 1-8.

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