A method and device for extending range control based on navigation information

Abstract

The present application provides a range-extending control method and device based on navigation information. The method includes setting a driving time threshold of a target vehicle on a target route; determining navigation information of the target route; the navigation information includes the road conditions of the target route and the locations of charging points and refueling points on the target route; determining the current information of the target vehicle, the current information includes the remaining power, remaining fuel and current location of the target vehicle; determining the target range-extending mode of the target vehicle based on the driving time threshold, current information and navigation information; and causing the target vehicle to travel in the target range-extending mode. The present application enables the target vehicle to travel in the corresponding target range-extending mode on the relevant road sections, reduce the journey time, increase the driving range, maximize the advantages of the dual energy of hybrid vehicles, and thus improve the economy of the entire vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a range-extended control method and device based on navigation information. Background Art

[0002] Plug-in hybrid electric vehicle (PHEV) is a new energy vehicle between pure electric vehicles and fuel vehicles. It has the engine, transmission, drive system, oil circuit, and fuel tank of traditional vehicles, as well as the battery, motor, and control circuit of pure electric vehicles. The battery capacity is relatively large and there is a charging port. It combines the advantages of pure electric vehicles (EV) and hybrid electric vehicles (HEV), and can achieve pure electric and zero-emission driving, and can also increase the vehicle's driving range through hybrid mode.

[0003] During holidays, many people choose to drive for a long-distance trip. During long-distance trips, we will encounter several road conditions such as urban roads, highways, national roads, and mountain roads. For long-distance travel, the cruising range of a car is very important, and it is equally important to ensure that it can reach the destination within the expected time. For hybrid vehicles, if the extended range allocation when driving on various road conditions is not properly allocated, the time on the road will increase and the cruising range will be shortened, making it impossible for hybrid vehicles to play the advantages of dual energy, thereby reducing the economy of the entire vehicle. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a method and device for controlling an extended range based on navigation information to solve the problem in the prior art that the extended range allocation when driving on various road conditions is not well allocated, which will increase the time on the road and shorten the cruising range, thereby reducing the driving range of the hybrid vehicle, making it impossible for the hybrid vehicle to take advantage of dual energy sources, thereby reducing the economy of the entire vehicle.

[0005] In a first aspect of an embodiment of the present application, a range extension control method based on navigation information is provided, which is applied to a hybrid vehicle. The method includes:

[0006] Setting a threshold for the driving time of the target vehicle on the target route;

[0007] Determine navigation information of a target route, the navigation information including road conditions of the target route and locations of charging points and refueling points on the target route;

[0008] Determine current information of the target vehicle, the current information including remaining power, remaining fuel, and current location of the target vehicle;

[0009] Determine a target extended range mode for the target vehicle based on a driving duration threshold, current information, and navigation information;

[0010] Make the target vehicle travel according to the target extended-range mode.

[0011] According to a second aspect of an embodiment of the present application, a range-extending control device based on navigation information is provided, which is applied to a hybrid vehicle. The device includes:

[0012] A driving time threshold setting module, used to set a driving time threshold of a target vehicle on a target route;

[0013] A navigation information determination module, used to determine navigation information of a target route, the navigation information including the road conditions of the target route and the locations of charging points and refueling points on the target route;

[0014] A current information determination module, used to determine the current information of the target vehicle, the current information including the remaining power, remaining fuel and current location of the target vehicle;

[0015] A target range-extending mode determination module, used to determine a target range-extending mode of a target vehicle based on a driving duration threshold, current information, and navigation information;

[0016] The driving module enables the target vehicle to drive according to the target extended-range mode.

[0017] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0018] According to a fourth aspect of an embodiment of the present application, a readable storage medium is provided, which stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects: by determining the navigation information of the target route, the navigation information includes: the road conditions of the target route and the locations of the charging points and refueling points on the target route, determining the current information of the target vehicle, determining the target range-extending mode of the target vehicle based on the driving time threshold according to the current information and navigation information, and making the target vehicle drive in the target range-extending mode. The target vehicle can be driven in the corresponding target range-extending mode on the relevant road sections, reducing the journey time, increasing the driving range, maximizing the advantages of the dual energy of the target vehicle, and thus improving the economy of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a schematic diagram of an application scenario of an embodiment of the present application;

[0022] Figure 2 It is a flowchart of a range-extended control method based on navigation information provided in an embodiment of the present application;

[0023] Figure 3 is a structural schematic diagram of a range-extended control device based on navigation information provided in an embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0026] Plug-in hybrid electric vehicle (PHEV) is a new energy vehicle between pure electric vehicles and fuel vehicles. It has the engine, transmission, drive system, oil circuit and fuel tank of traditional vehicles. It also has the battery, motor and control circuit of pure electric vehicles. The battery capacity is relatively large and there is a charging port. It combines the advantages of pure electric vehicles (EV) and hybrid electric vehicles (HEV). It can achieve pure electric and zero-emission driving, and can also increase the vehicle's driving range through hybrid mode.

[0027] During holidays, many people choose to drive for a long-distance trip. During long-distance trips, we will encounter several road conditions such as urban roads, highways, national roads, and mountain roads. For long-distance travel, the cruising range of a car is very important, and it is equally important to ensure that it can reach the destination within the expected time. For hybrid vehicles, if the extended range allocation when driving on various road conditions is not properly allocated, the time on the road will increase and the cruising range will be shortened, making it impossible for hybrid vehicles to play the advantages of dual energy, thereby reducing the economy of the entire vehicle.

[0028] In view of the above technical problems, the present application proposes a range-extending control method based on navigation information, which determines the navigation information of the target route, including the road conditions of the target route and the locations of the charging points and refueling points on the target route, determines the current information of the target vehicle, determines the target range-extending mode of the target vehicle based on the driving time threshold according to the current information and navigation information, and enables the target vehicle to travel in the target range-extending mode. The target vehicle can be driven in the corresponding target range-extending mode on the relevant road sections, reduce the journey time, increase the driving range, maximize the advantages of the dual energy of the hybrid vehicle, and thus improve the economy of the whole vehicle.

[0029] A method and device for extended-range control based on navigation information according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0030] Figure 1 1 is a schematic diagram of an application scenario of an embodiment of the present application. The application scenario may include terminal devices 101, 102 and 103, a server 104, a network 105 and a target vehicle 106.

[0031] The terminal devices 101, 102 and 103 can be hardware or software. When the terminal devices 101, 102 and 103 are hardware, they can be various electronic devices with display screens and supporting communication with the server 104, including but not limited to smart phones, tablet computers, laptop portable computers and desktop computers, etc.; when the terminal devices 101, 102 and 103 are software, they can be installed in the electronic devices as described above. The terminal devices 101, 102 and 103 can be implemented as multiple software or software modules, or as a single software or software module, which is not limited in the embodiments of the present application. Furthermore, various applications can be installed on the terminal devices 101, 102 and 103, such as data processing applications, instant messaging tools, social platform software, search applications, shopping applications, etc.

[0032] The server 104 may be a server that provides various services, for example, a background server that receives a request sent by a terminal device that establishes a communication connection with the server, and the background server may receive and analyze the request sent by the terminal device, and generate a processing result. The server 104 may be a single server, or a server cluster composed of several servers, or a cloud computing service center, which is not limited in the present embodiment of the application.

[0033] It should be noted that the server 104 can be hardware or software. When the server 104 is hardware, it can be various electronic devices that provide various services for the terminal devices 101, 102, and 103. When the server 104 is software, it can be multiple software or software modules that provide various services for the terminal devices 101, 102, and 103, or it can be a single software or software module that provides various services for the terminal devices 101, 102, and 103, and the embodiments of the present application are not limited to this.

[0034] The network 105 can be a wired network connected by coaxial cable, twisted pair and optical fiber, or it can be a wireless network that can interconnect various communication devices without wiring, such as Bluetooth, Near Field Communication (NFC), infrared, etc., which is not limited in the embodiments of the present application.

[0035] The target vehicle 106 specifically refers to a plug-in hybrid electric vehicle (PHEV), which is a new energy vehicle between a pure electric vehicle and a fuel vehicle, and is uniformly referred to as the target vehicle 106 in this embodiment. The target vehicle 106 has both the engine, transmission, transmission system, oil circuit, and fuel tank of a traditional vehicle, and the battery, motor, and control circuit of a pure electric vehicle, and the battery capacity is relatively large and has a charging interface. It combines the advantages of a pure electric vehicle (EV) and a hybrid electric vehicle (HEV), and can achieve pure electric and zero-emission driving, and can also increase the vehicle's driving range through a hybrid mode.

[0036] The user can establish a communication connection with the server 104 via the network 105 through the terminal devices 101, 102 and 103 to receive or send information, etc., and then control the target vehicle 106. Specifically, the server 104 sets a threshold for the driving time of the user on the target route; the server 104 determines the navigation information of the target route; the navigation information includes the road conditions of the target route and the locations of the charging points and refueling points on the target route; the server 104 determines the current information of the target vehicle 106, and the current information includes the remaining power, remaining fuel and current location of the target vehicle 106; based on the driving time threshold, the target extended range mode of the target vehicle 106 is determined according to the current information and the navigation information; the server 104 causes the target vehicle 106 to travel according to the target extended range mode.

[0037] It should be noted that the specific types, quantities and combinations of the terminal devices 101, 102 and 103, the server 104, the network 105 and the target vehicle 106 can be adjusted according to the actual needs of the application scenario, and the embodiments of the present application do not limit this.

[0038] Figure 2 It is a flow chart of a range-extended control method based on navigation information provided in an embodiment of the present application. Figure 2 The extended range control method based on navigation information can be obtained by Figure 1 The terminal device or server executes it.

[0039] like Figure 2 As shown, the extended range control method based on navigation information includes:

[0040] S201, setting a driving time threshold of a target vehicle on a target route;

[0041] S202, determining navigation information of a target route, where the navigation information includes road conditions of the target route and locations of charging points and refueling points on the target route;

[0042] S203, determining current information of the target vehicle, the current information including the remaining power, remaining fuel and current location of the target vehicle;

[0043] S204, determining a target extended-range mode for the target vehicle based on the driving duration threshold, current information, and navigation information;

[0044] S205, causing the target vehicle to travel according to the target extended-range mode.

[0045] Specifically, after the target vehicle is started, the target vehicle location is taken as the starting point, the destination is taken as the end point, and the driving route from the starting point to the end point is the target route. The driving time threshold in this embodiment refers to the prescribed time for driving on the target route. The setting of the driving time threshold is based on the premise of complying with traffic speed limit regulations and combining the performance of the vehicle itself and user needs. Generally speaking, in order to reach the destination quickly without exceeding the speed limit, the driving time threshold is generally relatively low. In other cases, the user may not need to reach the destination particularly quickly. For example, during the trip, the user hopes to slow down the speed and enjoy the scenery along the way. Then, the driving time threshold may be slightly higher.

[0046] Furthermore, in order to reach the destination within the driving time threshold and to maximize the range during driving to achieve the purpose of range extension, it is necessary to master the navigation information of the target route in detail. Generally speaking, the navigation information includes the road conditions of the target route and the locations of charging points and refueling points on the target route. Among them, the road conditions of the target route generally include several situations, such as steep mountain roads, highways, and urban roads. The road conditions have a great impact on the overall economy of the target vehicle. Reasonable use of the dual-engine advantages of the target vehicle according to the road conditions can increase the range and improve the economy of the vehicle. In more congested cities, electric motors are more efficient, and gasoline engines dominate after getting on the highway. Pure electric driving is used at low speeds, and engines are mainly used at high speeds. The high-efficiency range of each work is utilized to make the best use of their strengths and avoid weaknesses, thereby saving energy consumption. Therefore, ultra-long range can be obtained. When the vehicle climbs a slope or overtakes a large power request, the engine and the electric motor will work together to provide stronger power, so steep mountain roads require hybrid driving. In this way, the three power modes of the target vehicle provide a more flexible energy distribution mechanism for the target vehicle, which can choose when to use oil and when to use electricity according to the road conditions. Therefore, the road conditions of the target route are closely related to the cruising range of the target vehicle. In addition, the navigation information also includes the location of the charging point and the location of the refueling point on the target route. The charging point location is the location where the battery of the target vehicle can be charged, and the refueling point location, as the name implies, is the location of the gas station. During the long-distance driving of the target vehicle, even dual energy will inevitably run out, so it is also necessary to consider where to refuel and where to charge, which will affect when the target vehicle can use which power more reasonably, and the energy source can be replenished in time.

[0047] Further, the current information of the target vehicle is determined, and the location and endurance status of the target vehicle can be determined in combination with the current information, so as to determine the specific driving status of the target vehicle in a certain section. The current information in this embodiment generally includes the remaining power, remaining fuel and current position of the target vehicle. Among them, the current position refers to the section of the target route where the vehicle is currently located, and the initial range-extending mode of the target vehicle can be first determined by the road conditions of the section. In this embodiment, the range-extending mode of the target vehicle can generally be divided into three types, namely: pure motor drive, engine drive, and hybrid drive. Combined with the road conditions in the above steps, a more flexible energy allocation mechanism can be reasonably provided for the target vehicle, and it can be selected when to drive the engine, when to drive the pure motor, and when to choose hybrid drive according to the road conditions. The remaining power and the remaining fuel represent the remaining range when driven by the pure motor and the engine, respectively. According to the remaining power and the remaining fuel, it can be combined with the location of the charging point and the refueling point to determine at which position the vehicle is refueled or charged, and further determine which range-extending mode is adopted in the current section, which can further improve the economy of the vehicle.

[0048] Furthermore, based on the driving time threshold, the target range-extending mode of the target vehicle is determined according to the current information and navigation information. From the previous step, it is known that an initial range-extending mode can be determined according to the current road conditions of the vehicle, that is, when the target vehicle is driving in the initial range-extending mode with the current remaining power and remaining fuel, it can complete the driving of the current section. Then, when the remaining power or remaining fuel cannot support the target vehicle to drive the current section in the initial range-extending mode, it is also necessary to determine a target range-extending mode so that the energy of the target vehicle can be replenished as soon as possible, so as to facilitate the extended-range driving of subsequent sections and maximize the economy. Of course, whether driving in the initial range-extending mode or the target range-extending mode, the ultimate premise is to ensure that the actual driving time is not greater than the driving time threshold. The determination of the target range-extending mode is also to ensure that the driving time is reduced as much as possible.

[0049] Furthermore, the target extended-range driving mode is determined, so that the target vehicle drives the current section according to the target extended-range driving mode. After replenishing the missing energy, the next section returns to the target vehicle. Under the current remaining power and remaining fuel, the vehicle drives in the initial extended-range driving mode to complete the driving state of the current section. That is, when the energy and power are sufficient, it is necessary to drive according to the initial extended-range driving mode determined according to the road conditions.

[0050] According to the technical solution provided by the embodiment of the present application, by determining the navigation information of the target route, the navigation information includes: the road conditions of the target route and the locations of the charging points and refueling points on the target route, the current information of the target vehicle is determined, and the target extended-range mode of the target vehicle is determined based on the driving time threshold according to the current information and the navigation information, so that the target vehicle is driven in the target extended-range mode. The target vehicle can be driven in the corresponding target extended-range mode on the relevant road section, reduce the journey time, increase the driving range, maximize the advantages of the dual energy of the target vehicle, and thus improve the economy of the whole vehicle.

[0051] In some embodiments, setting a threshold of the driving time of the user on the target route includes:

[0052] Retrieving driving information related to the target route from a traffic database, the driving information including the vehicle type and historical driving status of each vehicle traveling on the target route;

[0053] Determine the historical driving time of each vehicle on the target route based on the driving information;

[0054] Determine the simulated driving time of the target vehicle on the target route according to the historical driving time;

[0055] Determine the duration of user needs;

[0056] The demand time is compared with the simulated driving time. If the demand time is greater than the simulated driving time, the demand time is set as the driving time threshold; if the demand time is not greater than the simulated driving time, the simulated driving time is set as the driving time threshold.

[0057] Specifically, all relevant information of vehicles traveling on the target route will be stored in the traffic database. The traffic database is formed by collecting all data related to vehicle driving and transmitting it to the cloud based on big data technology. Based on these data in the traffic database, road network perception is realized. Through the computing power of the cloud, big data analysis or AI algorithm modeling is performed on the data to realize vehicle-road collaboration. That is, after the target route is determined, the driving time summary and average value of vehicles with the same or similar models as the target vehicle on the target route can be obtained based on the previous vehicle driving information on the target route. The analysis based on big data is more accurate because big data is summarized based on the information of actual driving vehicles, which directly or indirectly takes into account the information of speed limit, road conditions, weather and personnel status, and can obtain more accurate reference values. Based on these data, the simulated driving time of the target vehicle on the target route can be known. The simulated driving time is obtained by referring to the historical driving time of the target vehicle. Determine the user's required time, that is, the time the user wants to complete the fastest. Because some users may want to complete the target route as quickly as possible and want to reach the destination faster, but the required time cannot be too low, because if it is too low, it may mean that the vehicle needs to exceed the speed limit to reach the destination. The simulated driving time represents the upper limit of the actual driving on the target route in accordance with traffic regulations and the rated performance of the vehicle. Therefore, by comparing the simulated driving time and the required time, a more reasonable driving time threshold can be set. Generally speaking, if the required time is greater than the simulated driving time, the required time is set as the driving time threshold; if the required time is not greater than the simulated driving time, the simulated driving time is set as the driving time threshold.

[0058] In some embodiments, determining current information of the target vehicle includes:

[0059] Determine the rated voltage and current voltage of the battery pack of the target vehicle, determine a voltage drop value according to the rated voltage and the current voltage, and determine the remaining power based on a discharge curve of the battery pack according to the voltage drop value;

[0060] determining a current hydraulic pressure value according to a hydraulic metering device preset in a fuel tank of the target vehicle, determining a full-load hydraulic pressure value when the fuel tank is fully filled with fuel, determining a pressure difference according to the current hydraulic pressure value and the full-load hydraulic pressure value, and determining a remaining fuel amount based on a rated capacity of the fuel tank according to the pressure difference;

[0061] The current position is determined based on the satellite positioning of the target vehicle.

[0062] Specifically, the battery pack of the target vehicle provides kinetic energy for the motor. It will have a rated voltage when it leaves the factory. The rated voltage represents the voltage value of the battery pack when it is fully charged. As the vehicle travels, the battery pack discharges, and the voltage gradually decreases as the power is lost. Then the voltage drop value can be determined based on the difference between the rated voltage and the current voltage, and the remaining power can be determined based on the discharge curve of the battery pack according to the voltage drop value. For example, assuming that the battery pack of a target vehicle uses a 48V electric vehicle battery pack, the rated voltage should be around 53V. The current voltage value of the current battery pack is read by using a digital voltmeter. If the current voltage reading is 53V, the battery pack has about 100% power; if the reading is 50V, the battery pack has about 75% power; if the reading is 46V, the battery pack has about 25% power. The discharge curve in this embodiment is a curve that can reflect the relationship between the voltage drop value and the remaining power. Generally speaking, the discharge curves of battery packs of different manufacturers, different capacities, and different types are slightly different. The discharge curve is formed by the manufacturer of the battery pack after factory measurement. It should be noted that the current voltage of the target vehicle's battery pack is not only affected by the charge and discharge status of the battery pack, but also by factors such as temperature and usage environment. Environmental factors must also be considered when determining the current voltage to obtain more accurate remaining power information.

[0063] Furthermore, when the fuel tank in the target vehicle is filled with oil, the oil pressure at the bottom of the tank can form a hydraulic value. As the vehicle uses oil while driving, the fuel level in the tank drops, and the oil pressure at the bottom of the tank gradually decreases. The current hydraulic value is determined according to the hydraulic metering device preset in the fuel tank of the target vehicle, and the pressure difference is determined by comparing the current hydraulic value and the full-load hydraulic value according to the full-load hydraulic value of the fuel tank. The remaining oil volume is determined based on the rated volume of the fuel tank according to the pressure difference. For example, after the fuel tank is filled with oil, the hydraulic metering device monitors the full-load hydraulic value at the bottom of the fuel tank as 3N. As the vehicle drives, the current hydraulic value is monitored to be 1N, so the pressure difference is 2N. The rated volume of the fuel tank is 50L, so according to the corresponding ratio, the remaining oil volume may be about 16L.

[0064] Furthermore, the target vehicle is generally equipped with a global positioning system (English: Global Positioning System, usually referred to as GPS), also known as the global satellite positioning system, which is a medium-range circular orbit satellite navigation system. Generally, vehicles are equipped with a GPS locator, which can know the current position of the GPS locator by feeding back its own GPS position to the satellite, so that the current position of the target vehicle can be determined through satellite positioning.

[0065] In some embodiments, determining a target extended range mode of the target vehicle based on the driving duration threshold, current information, and navigation information includes:

[0066] The target route includes at least one road segment according to the road condition classification;

[0067] The road section where the current position is located is used as the current driving section;

[0068] Determine the initial range extension mode according to the current driving section;

[0069] While ensuring that the actual driving time is not greater than the driving time threshold, the target extended-range mode for the current driving section is determined based on the remaining power and remaining fuel, according to the location of the charging point and the location of the refueling point.

[0070] Specifically, the target route can be composed of multiple sections. In this embodiment, each section is classified according to the road conditions. Generally speaking, the sections can be divided into steep roads, highways, and urban roads. According to the current position of the target vehicle, the section where the current position is located is determined as the current driving section. In combination with the road conditions of the current driving section, an initial range extension mode can be determined. The initial range extension mode is the power form used by the target vehicle to drive in the initial range extension mode under the current remaining power and remaining fuel. The current driving section can be completed by using oil, electricity or hybrid. In this way, the power can be reasonably selected according to the road conditions to improve the economy. In some cases, the remaining power or the remaining fuel is not enough to complete the driving of the current driving section, so it is also necessary to determine the target range extension mode of the current driving section according to the location of the charging point and the location of the refueling point. So that the energy of the target vehicle can be replenished as soon as possible, it is convenient to extend the driving of the subsequent sections, and the overall economy is maximized. Of course, whether it is driving in the initial range extension mode or the target range extension mode, the ultimate premise is to ensure that the actual driving time is not greater than the driving time threshold. The determination of the target extended-range mode is also to ensure that the driving time is reduced as much as possible.

[0071] In some embodiments, the range-extending mode includes three modes: pure motor drive, engine drive, and hybrid drive. Then, determining the initial range-extending mode according to the current driving section includes:

[0072] If the current driving section is an urban road, the initial range extension mode is determined to be pure electric drive;

[0073] If the current driving section is a highway, the initial range extension mode is determined to be engine driven;

[0074] If the current driving section is a steep road, it is determined that the initial range-extending mode is hybrid drive.

[0075] Specifically, because the road conditions have a great impact on the overall economy of the target vehicle, the reasonable use of the dual-engine advantages of the target vehicle according to the road conditions can increase the cruising range and improve the economy of the vehicle. Therefore, the initial range extension mode is determined according to the current driving section. The range extension mode of the target vehicle can be divided into three modes according to the drive type: motor drive, engine drive, and hybrid drive. In more congested cities, motor drive is more efficient, and after getting on the highway, it is the world of engine drive. Pure electric driving is used at low speeds, and the engine is mainly used at high speeds. The high-efficiency range of each work is utilized, and the strengths are avoided, thereby saving energy consumption. Therefore, an ultra-long cruising range can be obtained. When the vehicle climbs a slope or overtakes a large power request, the engine and the electric motor will work together to provide stronger power. Therefore, steep roads require hybrid drive. In this way, the three range extension modes of the target vehicle provide a more flexible energy distribution mechanism for the target vehicle, which can choose when to use pure motor drive, when to use engine drive, and when to use hybrid drive according to road conditions.

[0076] In some embodiments, based on the remaining power and the remaining fuel, determining the target range-extending mode for the current driving section according to the location of the charging point and the location of the refueling point includes:

[0077] Determine the remaining electric energy range of the target vehicle according to the remaining power;

[0078] Determine the remaining fuel range of the target vehicle based on the remaining fuel amount;

[0079] Determine a first distance between the current location and the nearest charging point location;

[0080] Determine a second distance between the current location and the nearest refueling point;

[0081] When the remaining electric energy cruising range is less than the first distance, determining the target range extension mode for the current driving section to be engine driven;

[0082] When the remaining fuel range is less than the second distance, the target range extension mode of the current driving section is determined to be pure motor drive;

[0083] When the remaining electric energy range is less than the first distance and the remaining fuel range is less than the second distance, it is determined that the target extended-range mode of the current driving section is hybrid drive.

[0084] Specifically, when the remaining power or remaining fuel cannot support the target vehicle to travel the current section in the initial range-extending mode, it is also necessary to determine a target range-extending mode so that the target vehicle's energy can be replenished as soon as possible, so as to facilitate the extended-range driving on subsequent sections and maximize economic efficiency. Therefore, the remaining power range of the target vehicle can be determined based on the remaining power combined with the vehicle's power consumption, and the remaining fuel range of the target vehicle can be determined based on the remaining fuel combined with the vehicle's fuel consumption. When the remaining power range is less than the first distance, it means that continuing to drive purely by electric motor is not enough to support the nearest charging point, then the target range-extending mode of the current driving section is determined to be engine-driven, so that the vehicle can reduce power consumption losses, reach the charging point for charging as soon as possible, and minimize the charging time.

[0085] Furthermore, when the remaining fuel range is less than the second distance, indicating that continued engine driving is insufficient to support the vehicle to the nearest refueling point, the target extended-range mode of the current driving section is determined to be pure electric motor drive, so as to reduce fuel consumption losses, prevent fuel from running out and damage to the vehicle's fuel system, and reach the refueling point for refueling as soon as possible, while also minimizing the time for refueling.

[0086] Furthermore, when the remaining electric energy range is less than the first distance and the remaining fuel range is less than the second distance, it means that only a single engine driving the vehicle is not enough to support the vehicle to reach the supply point to replenish fuel or electric energy, then the target extended-range mode of the current driving section is determined to be hybrid drive, and try to ensure that a certain amount of remaining electric energy and fuel are left to reach the charging point or refueling point to replenish energy, so as to improve driving efficiency, so that the energy of the target vehicle can be replenished as soon as possible, which is convenient for extended-range driving on subsequent sections and maximizes economic efficiency.

[0087] In some embodiments, it also includes:

[0088] Determine first occupancy information of a charging point and second occupancy information of a refueling point on a target route;

[0089] Determine a first proposed queuing time length according to the first occupancy information; determine a second proposed queuing time length according to the second occupancy information;

[0090] Determine the expected driving time of the target vehicle without refueling;

[0091] If the sum of the first planned queuing time and the expected driving time is greater than the driving time threshold, the energy replenishment method is determined to be refueling, and the target range extension method is pure electric drive;

[0092] If the sum of the second planned queuing time and the expected driving time is greater than the driving time threshold, the energy supplement method is determined to be charging, and the target range extension method is engine drive or hybrid drive.

[0093] Specifically, when traveling long distances, whether refueling or charging, it takes a certain amount of time, especially during peak hours, when there may be a "terrifying" long queue at the service area. At this time, if charging or refueling is carried out, it is likely to take up a lot of time, so that the actual driving time is likely to exceed the driving time threshold. Generally, the expected driving time of the target vehicle without replenishing energy can be determined through navigation. If there is refueling or charging, the sum of the expected driving time and the intended queuing time is the actual driving time. Therefore, the occupancy information of the charging point and the refueling point on the target route can be determined through navigation information, including how many people are queuing at the charging point or refueling point, and how long it takes for each person to fill up the gas or fully charge. Based on these occupancy information, it can be basically determined that if the current vehicle goes to refuel or charge, the intended queuing time required can be basically determined. In order to facilitate distinction, the queuing time at the charging point is used as the first intended queuing time, and the queuing time at the refueling point is used as the second intended queuing time. If the intended queuing time is too long, the comprehensive time of the entire target route exceeds the driving time threshold, and it is necessary to control the energy replenishment method of the target vehicle, that is, refueling or charging. In general, the charging time is longer than the refueling time. The target range extension method is determined according to the specific energy supplement method. If the sum of the first planned queuing time and the expected driving time is greater than the driving time threshold, the energy supplement method is determined to be refueling, and the target range extension method is pure motor drive; if the sum of the second planned queuing time and the expected driving time is greater than the driving time threshold, the energy supplement method is determined to be charging, and the target range extension method is engine drive or hybrid drive. In other words, if the queuing time for refueling is too long, then the target range extension method is to use pure motor drive or hybrid drive as much as possible to reduce fuel consumption, miss the refueling peak, and save time. If the queuing time for charging is too long, then the target range extension method is to use engine drive or hybrid drive as much as possible to reduce power consumption, miss the charging peak, and save time.

[0094] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described one by one here.

[0095] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0096] Figure 3 It is a schematic diagram of a range-extended control device based on navigation information provided in an embodiment of the present application.

[0097] like Figure 3 As shown, the extended range control device based on navigation information includes:

[0098] A driving time threshold setting module 301 is configured to set a driving time threshold of a target vehicle on a target route;

[0099] The navigation information determination module 302 is configured to determine navigation information of a target route; the navigation information includes the road conditions of the target route and the locations of charging points and refueling points on the target route;

[0100] The current information determination module 303 is configured to determine the current information of the target vehicle, the current information including the remaining power, remaining fuel and current location of the target vehicle;

[0101] A target range-extending mode determination module 304 is configured to determine a target range-extending mode of a target vehicle based on a driving duration threshold, current information, and navigation information;

[0102] The driving module 305 is configured to make the target vehicle drive according to the target extended-range mode.

[0103] In some embodiments, Figure 3 The driving time threshold setting module 301 includes:

[0104] Retrieving driving information related to the target route from a traffic database, the driving information including the vehicle type and historical driving status of each vehicle traveling on the target route;

[0105] Determine the historical driving time of each vehicle on the target route based on the driving information;

[0106] Determine the simulated driving time of the target vehicle on the target route according to the historical driving time;

[0107] Determine the duration of user needs;

[0108] The demand time is compared with the simulated driving time. If the demand time is greater than the simulated driving time, the demand time is set as the driving time threshold; if the demand time is not greater than the simulated driving time, the simulated driving time is set as the driving time threshold.

[0109] In some embodiments, Figure 3 The current information determination module 303 includes:

[0110] Determine the rated voltage and current voltage of the battery pack of the target vehicle, determine a voltage drop value according to the rated voltage and the current voltage, and determine the remaining power based on a discharge curve of the battery pack according to the voltage drop value;

[0111] determining a current hydraulic pressure value according to a hydraulic metering device preset in a fuel tank of the target vehicle, determining a full-load hydraulic pressure value when the fuel tank is fully filled with fuel, determining a pressure difference according to the current hydraulic pressure value and the full-load hydraulic pressure value, and determining a remaining fuel amount based on a rated capacity of the fuel tank according to the pressure difference;

[0112] The current position is determined based on the satellite positioning of the target vehicle.

[0113] In some embodiments, Figure 3 The target extended range mode determination module 304 includes:

[0114] The target route includes at least one road segment according to the road condition classification;

[0115] The road section where the current position is located is used as the current driving section;

[0116] Determine the initial range extension mode according to the current driving section;

[0117] While ensuring that the actual driving time is not greater than the driving time threshold, the target extended-range mode for the current driving section is determined based on the remaining power and remaining fuel, according to the location of the charging point and the location of the refueling point.

[0118] In some embodiments, the extended range mode includes three modes: pure motor drive, engine drive, and hybrid drive. Figure 3 The target extended range mode determination module 304 includes:

[0119] If the current driving section is an urban road, the initial range extension mode is determined to be pure electric motor drive;

[0120] If the current driving section is a highway, the initial range extension mode is determined to be engine driven;

[0121] If the current driving section is a steep road, it is determined that the initial range-extending mode is hybrid drive.

[0122] In some embodiments, Figure 3 The target extended range mode determination module 304 includes:

[0123] Determine the remaining electric energy range of the target vehicle according to the remaining power;

[0124] Determine the remaining fuel range of the target vehicle based on the remaining fuel amount;

[0125] Determine a first distance between the current location and the nearest charging point location;

[0126] Determine a second distance between the current location and the nearest refueling point;

[0127] When the remaining electric energy cruising range is less than the first distance, determining the target range extension mode for the current driving section to be engine driven;

[0128] When the remaining fuel range is less than the second distance, the target range extension mode of the current driving section is determined to be pure motor drive;

[0129] When the remaining electric energy range is less than the first distance and the remaining fuel range is less than the second distance, it is determined that the target extended-range mode of the current driving section is hybrid drive.

[0130] In some embodiments, Figure 3 The target extended range mode determination module 304 further includes:

[0131] Determine first occupancy information of a charging point and second occupancy information of a refueling point on a target route;

[0132] Determine a first proposed queuing time length according to the first occupancy information; determine a second proposed queuing time length according to the second occupancy information;

[0133] Determine the expected driving time of the target vehicle without refueling;

[0134] If the sum of the first planned queuing time and the expected driving time is greater than the driving time threshold, the energy replenishment method is determined to be refueling, and the target range extension method is pure electric drive;

[0135] If the sum of the second planned queuing time and the expected driving time is greater than the driving time threshold, the energy supplement method is determined to be charging, and the target range extension method is engine drive or hybrid drive.

[0136] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0137] Figure 4 Schematic diagram of an electronic device 4 provided in an embodiment of the present application. Figure 4 As shown, the electronic device 4 of this embodiment includes: a processor 401, a memory 402, and a computer program 403 stored in the memory 402 and executable on the processor 401. When the processor 401 executes the computer program 403, the steps in the above-mentioned method embodiments are implemented. Alternatively, when the processor 401 executes the computer program 403, the functions of the modules / units in the above-mentioned device embodiments are implemented.

[0138] The electronic device 4 may be a desktop computer, a notebook, a PDA, a cloud server, or other electronic device. The electronic device 4 may include, but is not limited to, a processor 401 and a memory 402. Those skilled in the art will appreciate that Figure 4 The electronic device 4 is merely an example and does not limit the electronic device 4 , and may include more or less components than those shown in the figure, or different components.

[0139] The processor 401 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0140] The memory 402 may be an internal storage unit of the electronic device 4, for example, a hard disk or memory of the electronic device 4. The memory 402 may also be an external storage device of the electronic device 4, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 4. The memory 402 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 402 is used to store computer programs and other programs and data required by the electronic device.

[0141] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0142] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, which may be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0143] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A range extension control method based on navigation information, applied to a hybrid vehicle, characterized in that: The method comprises: Setting a threshold for the driving time of the target vehicle on the target route; Determine navigation information of the target route, the navigation information including the road conditions of the target route and the locations of charging points and refueling points on the target route; Determining current information of the target vehicle, the current information including remaining power, remaining fuel, and current location of the target vehicle; Determine a target range-extending mode of the target vehicle based on the driving duration threshold, the current information, and the navigation information; wherein the range-extending mode includes three modes: pure motor drive, engine drive, and hybrid drive; causing the target vehicle to travel according to the target extended-range mode; Also includes: Determining first occupancy information of a charging point and second occupancy information of a refueling point on the target route; Determine a first planned queuing time according to the first occupancy information; determine a second planned queuing time according to the second occupancy information; Determining an expected driving time of the target vehicle without recharging energy; If the sum of the first planned queuing time and the expected driving time is greater than the driving time threshold, determining that the energy replenishment mode is refueling, and the target range extension mode is the pure motor drive; If the sum of the second planned queuing time and the expected driving time is greater than the driving time threshold, it is determined that the energy supplement method is charging, and the target range extension mode is the engine drive or the hybrid drive.

2. The extended range control method based on navigation information according to claim 1, characterized in that: The setting of the driving time threshold of the target vehicle on the target route includes: Retrieving driving information related to the target route from a traffic database, the driving information including the vehicle type and historical driving status of each vehicle traveling on the target route; Determine the historical driving time of each of the vehicles on the target route according to the driving information; Determining a simulated driving time of the target vehicle on the target route according to the historical driving time; Determine the duration of user needs; The required time is compared with the simulated driving time. If the required time is greater than the simulated driving time, the required time is set as the driving time threshold; if the required time is not greater than the simulated driving time, the simulated driving time is set as the driving time threshold.

3. The extended range control method based on navigation information according to claim 1, characterized in that: The determining of the current information of the target vehicle includes: Determine a rated voltage and a current voltage of a battery pack of the target vehicle, determine a voltage drop value according to the rated voltage and the current voltage, and determine the remaining power based on a discharge curve of the battery pack according to the voltage drop value; determining a current hydraulic pressure value according to a hydraulic metering device preset in a fuel tank of the target vehicle, determining a full-load hydraulic pressure value of the fuel tank when the fuel tank is fully filled with fuel, determining a pressure difference value according to the current hydraulic pressure value and the full-load hydraulic pressure value, and determining the remaining fuel amount based on the rated capacity of the fuel tank according to the pressure difference value; The current position is determined based on the satellite positioning of the target vehicle.

4. The extended range control method based on navigation information according to claim 3 is characterized in that: The determining of the target extended-range mode of the target vehicle based on the driving duration threshold, the current information and the navigation information comprises: The target route includes at least one road section according to the road condition classification; Taking the road section where the current position is located as the current driving road section; determining an initial range-extending mode according to the current driving section; Under the condition that the actual driving time is not greater than the driving time threshold, the target range-extending mode of the current driving section is determined based on the remaining power and the remaining fuel as well as according to the charging point location and the fueling point location.

5. The extended range control method based on navigation information according to claim 4 is characterized in that: Determining the initial range-extending mode according to the current driving section includes: If the current driving section is an urban road, determining that the initial range-extending mode is the pure motor drive; If the current driving section is a highway, determining that the initial range-extending mode is the engine driving; If the current driving section is a steep road, the initial range-extending mode is determined to be the hybrid drive.

6. The extended range control method based on navigation information according to claim 5, characterized in that: The determining of the target range-extending mode of the current driving section based on the remaining power and the remaining fuel according to the charging point location and the refueling point location includes: Determine the remaining electric energy range of the target vehicle according to the remaining electric power; Determining the remaining fuel mileage of the target vehicle according to the remaining fuel amount; Determine a first distance between the current location and the nearest location of the charging point; Determine a second distance between the current location and the nearest location of the refueling point; When the remaining electric energy cruising range is less than the first distance, determining the target range-extending mode of the current driving section to be the engine driving; When the remaining fuel mileage is less than the second distance, determining the target range-extending mode for the current driving section to be the pure motor drive; When the remaining electric energy range is less than the first distance and the remaining fuel range is less than the second distance, the target extended-range mode of the current driving section is determined to be the hybrid drive.

7. An extended range control device based on navigation information, characterized in that: Applied to hybrid vehicles, the device comprises: A driving time threshold setting module is used to set a driving time threshold of a target vehicle on a target route; A navigation information determination module, used to determine navigation information of the target route, wherein the navigation information includes the road conditions of the target route and the locations of charging points and refueling points on the target route; A current information determination module, used to determine the current information of the target vehicle, the current information including the remaining power, remaining fuel and current location of the target vehicle; a target range-extending mode determination module, configured to determine a target range-extending mode of the target vehicle based on the driving duration threshold, the current information, and the navigation information; wherein the range-extending mode includes three modes: pure motor drive, engine drive, and hybrid drive; A driving module, causing the target vehicle to drive according to the target extended-range mode; The target extended range mode determination module is further used for: Determining first occupancy information of a charging point and second occupancy information of a refueling point on the target route; Determine a first planned queuing time according to the first occupancy information; determine a second planned queuing time according to the second occupancy information; Determining an expected driving time of the target vehicle without recharging energy; If the sum of the first planned queuing time and the expected driving time is greater than the driving time threshold, determining that the energy replenishment mode is refueling, and the target range extension mode is the pure motor drive; If the sum of the second planned queuing time and the expected driving time is greater than the driving time threshold, it is determined that the energy supplement method is charging, and the target range extension mode is the engine drive or the hybrid drive.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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