Start-stop control method and device of vehicle range extender, electronic equipment and storage medium

Abstract

The application provides a start-stop control method and device of a vehicle range extender, an electronic device and a storage medium. The method comprises the following steps: acquiring the power information, the current position information and the driving direction of the vehicle; searching for the target charging pile closest to the vehicle in the driving direction in a preset charging pile database according to the current position information, and obtaining the first distance information between the target charging pile and the vehicle; adjusting the first power threshold for controlling the start-stop of the vehicle range extender according to the first distance information and a set threshold rule, so as to control the start-stop of the vehicle range extender according to the power information and the first power threshold.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a start-stop control method, device, electronic device, and storage medium for a vehicle range extender. Background Technology

[0002] Extended-range electric vehicles are among the most promising products for industrialization. They combine the advantages of pure electric vehicles and gasoline vehicles, effectively solving the problem of insufficient driving range of pure electric vehicles. They also have relatively ideal fuel consumption and less pollutant emissions, improving energy conversion efficiency and playing a role in energy conservation and emission reduction.

[0003] In related technologies, the start-stop control of range extenders often relies on a battery level threshold to start or stop the extender. This threshold, or battery maintenance point, is typically a fixed value and does not take into account changes in the vehicle's operating environment. Consequently, the range extender may start prematurely, resulting in higher fuel consumption and a poor user experience. Summary of the Invention

[0004] In view of this, embodiments of this application provide a start-stop control method, device, electronic device, and storage medium for a vehicle range extender to solve the technical problem of premature start-up of the range extender due to a fixed battery level.

[0005] A first aspect of this application provides a start-stop control method for a vehicle range extender. The method includes: acquiring the power battery charge information, current location information, and driving direction of the vehicle; searching a preset charging pile database for the nearest target charging pile located ahead of the vehicle in the driving direction based on the current location information, and obtaining first distance information between the target charging pile and the vehicle; adjusting a first power threshold for controlling the start-stop of the vehicle range extender based on the first distance information and a set threshold rule, so as to control the start-stop of the vehicle range extender based on the power battery charge information and the first power threshold.

[0006] A second aspect of this application provides a start-stop control device for a vehicle range extender. The device includes: an acquisition module for acquiring the vehicle's power battery charge information, current location information, and driving direction; a search module for searching a target charging pile located ahead of the vehicle in a preset charging pile database based on the current location information, and obtaining first distance information between the target charging pile and the vehicle; and an adjustment module for adjusting a first charge threshold for controlling the start-stop of the vehicle range extender based on the first distance information and a set threshold rule, so as to control the start-stop of the vehicle range extender based on the charge information and the first charge threshold.

[0007] A third aspect of this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method described above.

[0008] A fourth aspect of this application provides a readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described method.

[0009] The beneficial effects of the embodiments of this application compared with the prior art include at least the following: the technical solution of the embodiments of this application determines the location of the nearest charging source where the vehicle can be charged by finding the target charging pile closest to the vehicle, and adjusts the power threshold according to the distance between the vehicle and the target charging pile. This reduces the power threshold when the vehicle is close to the target charging pile, delays the start of the vehicle's range extender, thereby reducing fuel consumption and improving the user experience.

[0010] Furthermore, when adopting the technical solution of this application embodiment, when the vehicle is close to the charging source, since it is expected to charge the power battery in a short time and replenish the vehicle's electrical energy, it is not necessary to start the vehicle range extender or the fuel engine when the power battery's electrical energy can reach the target charging station. This reduces the number of times the vehicle range extender starts and stops and fuel consumption. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a flowchart illustrating a start-stop control method for a vehicle range extender provided in an embodiment of this application;

[0013] Figure 2 This is a flowchart illustrating another start-stop control method for a vehicle range extender provided in an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the start-stop control device for a vehicle range extender provided in an embodiment of this application;

[0015] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0016] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0017] The main concept of range-extended electric vehicles (REEVs) is to have a longer pure electric driving range. When the battery charge drops below approximately 20%, the vehicle's range extender system activates to maintain the battery charge and meet the vehicle's power requirements under various operating conditions. Current solutions primarily employ a thermostat control strategy, where the range extender operates at a constant point (either single or two), and a power follow control strategy, which distributes power between the range extender and battery systems based on the vehicle's speed.

[0018] When employing a thermostat control strategy, such as fixing the operating point of the vehicle's range extender at one, two, or three points (pre-set fixed values), the fuel economy is relatively poor. Faced with increasingly stringent fuel consumption regulations, strategy optimization is becoming increasingly crucial for range-extended electric vehicles.

[0019] To address the above technical problems, this application provides a start-stop control scheme for a vehicle range extender to improve the fuel economy of range-extended electric vehicles.

[0020] The start-stop control method and apparatus for a vehicle range extender according to embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0021] Figure 1 This is a flowchart illustrating a start-stop control method for a vehicle range extender provided in an embodiment of this application. The method provided in this application can be executed by any electronic device with computer processing capabilities, such as a terminal or server. For example, as... Figure 1 The start-stop control method for the vehicle range extender shown can be executed by the vehicle client. The vehicle client can be simply referred to as the vehicle terminal. For example... Figure 1 As shown, the start-stop control method for the vehicle range extender includes:

[0022] Step S101: Obtain the vehicle's power battery charge information, current location information, and driving direction.

[0023] Specifically, the battery charge information can be obtained from the battery management system, the vehicle's current location information can be obtained from the vehicle positioning system, and the driving direction can be collected by the vehicle's driving system. This charge information, current location information, and driving direction can all be aggregated in the vehicle terminal and thus used in step S101.

[0024] Step S102: Based on the current location information, search the preset charging pile database for the target charging pile that is closest to the vehicle in the direction of travel, and obtain the first distance information between the target charging pile and the vehicle.

[0025] Specifically, the charging pile database can be obtained from a cloud server by the vehicle terminal and stored in the vehicle terminal. The charging pile database contains the location information of each charging pile in the current city. Based on the location information of each charging pile and the vehicle's current location information, the distance between the vehicle and each charging pile can be obtained, and thus the nearest target charging pile and its corresponding initial distance information can be obtained.

[0026] Step S103: Adjust the first power threshold for controlling the start and stop of the vehicle range extender according to the first distance information and the set threshold rules, so as to control the start and stop of the vehicle range extender according to the power information and the first power threshold.

[0027] Specifically, a first power threshold is set based on the distance between the vehicle and the target charging station and preset rules. When the vehicle is close to the target charging station, the power threshold can be reduced or a smaller power threshold can be set relative to the originally set fixed threshold. When the vehicle is far from the target charging station, the originally set fixed threshold can be maintained or a larger power threshold can be set relative to the originally set fixed threshold.

[0028] Battery SOC (State of Charge) refers to the battery's state of charge, or remaining charge level. It is numerically defined as the ratio of remaining capacity to the battery's total capacity, usually expressed as a percentage. The SOC of electric vehicle batteries is generally controlled within the operating range of 30% to 70%.

[0029] For example, with a fixed threshold of 40%, a first battery level threshold of 30% can be set when the vehicle is 10km or less from the nearest charging station. When the vehicle is more than 10km from the nearest charging station, the first battery level threshold can be set to 40%. Thus, if the current vehicle is 8km from the nearest charging station, the first battery level threshold can be set to 30%.

[0030] When the technical solution of this application embodiment is adopted, when the vehicle is close to the charging source, the power battery is expected to be charged in a short time to replenish the vehicle's electrical energy. Therefore, if the power battery's electrical energy can reach the target charging station, it is not necessary to start the vehicle's range extender or the fuel engine, thereby reducing the number of times the vehicle's range extender starts and stops and fuel consumption.

[0031] In step S102, when searching for the nearest target charging pile to the vehicle in the preset charging pile database based on the current location information, the charging piles located in the front of the vehicle in the driving direction can be obtained from the preset map data to form a charging pile set. The charging pile location information of the charging piles in the charging pile set can be obtained. Then, the vehicle-to-charging pile distance between the vehicle and the charging piles in the charging pile set can be obtained based on the current location information and the charging pile location information. Finally, the target charging pile closest to the vehicle can be selected based on the vehicle-to-charging pile distance.

[0032] Specifically, the distance between the vehicle and each charging pile in the charging pile database located ahead of the vehicle in the direction of travel can be determined based on the current location information and the charging pile location information in the charging pile database. The target charging pile with the smallest distance from the vehicle in the direction of travel is selected, and the first power threshold is determined according to the threshold rules mentioned above based on the distance between the vehicle and the target charging pile. Here, "ahead of the direction of travel" can be understood as the left front, right front, or directly in front of the vehicle, or it can be understood as the road ahead on the road on which the vehicle is traveling.

[0033] In this embodiment of the application, the set threshold rule can be that the first power threshold changes with the distance between the vehicle and the target charging pile in the form of a linear function, a curve function, or a piecewise function.

[0034] Specifically, when the first battery level threshold changes as a linear function of the distance between the vehicle and the target charging station, this linear function can be a decreasing function. For example, in a linear function representing the change in distance between the vehicle and the target charging station, when the distance is 0km to 10km, the corresponding first battery level threshold is 30% to 40%. In this case, the threshold rule is that the first battery level threshold changes as a linear function of the distance between the vehicle and the target charging station. Under this threshold rule represented by the linear function, when the distance between the vehicle and the target charging station is 5km, the corresponding first battery level threshold is 35%, and when the distance is 8km, the corresponding first battery level threshold is 38%.

[0035] Specifically, when the first battery threshold changes as a function of the distance between the vehicle and the target charging station, the linear function can be a decreasing function, that is, as the distance between the vehicle and the target charging station decreases, the first battery threshold decreases.

[0036] Specifically, when the first battery threshold changes in a piecewise function manner with the distance between the vehicle and the target charging station, if the distance between the vehicle and the target charging station decreases by a set first value, the first battery threshold decreases. Furthermore, between different segments of the piecewise function, as the minimum distance value of each segment decreases, the first battery threshold decreases. Here, the first value is a value greater than or equal to the segment length; therefore, decreasing the first value allows the distance between the vehicle and the target charging station to cross the current segment, thus demonstrating that the battery threshold decreases with the distance between the vehicle and the target charging station.

[0037] In step S103, controlling the start and stop of the vehicle range extender according to the power information and the first power threshold includes: if the remaining power of the power battery represented by the power information is less than or equal to the first power threshold, controlling the vehicle range extender to start; if the remaining power is greater than the first power threshold, controlling the vehicle range extender to stop.

[0038] Vehicle range extenders have multiple operating modes. Typically, a battery charge threshold can be set as the switching point for the range extender to start. The range extender starts when the remaining charge of the battery is less than or equal to this switching point. It does not start when the remaining charge of the battery is greater than this switching point.

[0039] In the technical solution of this application embodiment, the charging pile information in the charging pile database can be generated based on the vehicle's previous parking and charging records, and the charging pile information includes the charging pile location information.

[0040] After a parking and charging process is completed, the charging pile information is recorded in the charging pile database. This information includes the charging pile identifier, the charging pile category, and the charging pile location. The charging pile category can be classified as either for residential or commercial use. For example, residential charging piles are those located in fixed parking spaces, while commercial charging piles are those located in charging stations. The charging pile location information indicates the location of the charging pile, which can be either a fixed parking space or a charging station.

[0041] The charging station database can also include information on all available charging stations in the current city. Based on the vehicle's direction of travel, a target charging station can be selected from those in front of the vehicle, according to the vehicle's location. "In front of the vehicle" includes the left front, directly front, and right front in the direction of travel. For example, when the vehicle is traveling due west, the charging stations in front of the vehicle include those to the west, northwest, and southwest.

[0042] Furthermore, the system can select the road where the vehicle is located based on its driving direction and current position, and then select the nearest target charging station on the road ahead of the vehicle along that road.

[0043] In this embodiment of the application, when the remaining power of the power battery is the second value, steps S101 to S103 can be executed to adjust the power threshold according to the distance between the vehicle and the target charging station. The second value can be a fixed power threshold.

[0044] When the vehicle range extender starts, the generator charges the power battery, increasing the battery's SOC value. Before the SOC setting value is reached, the vehicle range extender will not be shut down. Instead, the excess power will be stored in the power battery until the SOC value reaches the setting value, at which point the engine will shut off.

[0045] After adjusting the battery power threshold in step S103, if the remaining battery power is less than or equal to the adjusted threshold, the vehicle range extender is activated. At this time, if the range extender charges the battery, the stored energy is replenished. A target battery power level (SOC setting) can be preset, and the charging time required to reach the target level can be calculated. Based on this charging time and the current vehicle speed, the vehicle's location information at the time of charging completion can be estimated. Based on the vehicle's location information at the time of charging completion and the location information of the target charging station, a second distance information between the vehicle and the target charging station at the time of charging completion can be obtained. Based on this second distance information, a new battery power threshold can be determined again according to the threshold rules, and the start / stop of the vehicle range extender can be controlled according to the new battery power threshold.

[0046] Specifically, when the vehicle's range extender is started, the internal combustion engine is activated. The internal combustion engine can either drive the vehicle alone or charge the battery while driving the vehicle. While the vehicle is charging the battery with the internal combustion engine, the charging time to the target charge level can be estimated based on the range extender's power output and the battery's battery and charge information. Secondary distance information between the vehicle and the target charging station is obtained based on the vehicle's speed and charging time. A second charge threshold for controlling the start and stop of the vehicle's range extender is adjusted based on this secondary distance information and a set threshold rule, thereby controlling the start and stop of the range extender according to the charge information and the second charge threshold.

[0047] In this embodiment, the vehicle's position information up to the point where charging is complete can be estimated based on the charging time and the current vehicle speed. Specifically, the product of the charging time and the current vehicle speed can be used as the distance traveled, and the position at the point where the distance traveled in the direction of travel is taken as the vehicle's position when charging is complete. Alternatively, the position at the point where the distance traveled along the current road is taken as the vehicle's position when charging is complete.

[0048] like Figure 2 As shown in the embodiment of this application, a start-stop control method for a vehicle range extender includes the following steps:

[0049] Step S201: Obtain the vehicle's power battery charge information, current location information, and driving direction.

[0050] Step S202: Based on the current location information, search the preset charging pile database for the target charging pile that is closest to the vehicle in the direction of travel, and obtain the first distance information between the target charging pile and the vehicle.

[0051] Step S203: Adjust the first power threshold for controlling the start and stop of the vehicle range extender according to the first distance information and the set threshold rules.

[0052] Step S204: Determine whether the remaining battery power is less than or equal to the first battery power threshold. If yes, proceed to step S205; otherwise, proceed to step S206.

[0053] Step S205: Control the vehicle range extender to start and charge the power battery.

[0054] Step S206 is executed to stop the vehicle range extender.

[0055] Step S207: Obtain the second distance information between the vehicle and the target charging pile when the target battery level is reached.

[0056] Specifically, the charging time to the target charge level can be estimated based on the power generation capacity of the vehicle's range extender and the battery and charge information of the power battery. The second distance information between the vehicle and the target charging station can be obtained based on the vehicle's speed and charging time.

[0057] Step S208: Adjust the second battery threshold for controlling the start and stop of the vehicle range extender according to the second distance information and the set threshold rules, so as to control the start and stop of the vehicle range extender according to the second battery threshold.

[0058] Specifically, the threshold rule used in step S208 can be the same as the threshold rule used in step S203, that is, the battery threshold changes with the distance between the vehicle and the target charging station in the form of a linear function, a curvilinear function, or a piecewise function. When the threshold rule used in step S208 is different from the threshold rule used in step S203, in the threshold rule used in step S208, the second battery threshold changes with the distance between the vehicle and the target charging station in the form of a linear function, a curvilinear function, or a piecewise function, and the second battery threshold decreases when the distance between the vehicle and the target charging station decreases by a set third value.

[0059] According to the vehicle range extender start-stop control method of the present application embodiment, by finding the nearest target charging pile to the vehicle, the location of the nearest charging source where the vehicle can be charged is determined, and the power threshold is adjusted according to the distance between the vehicle and the target charging pile. This allows the power threshold to be reduced when the vehicle is close to the target charging pile, thus delaying the start of the vehicle range extender, thereby reducing fuel consumption and improving the user experience.

[0060] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. The start-stop control device for the vehicle range extender described below and the start-stop control method for the vehicle range extender described above can be referred to each other. For details not disclosed in the apparatus embodiments of this application, please refer to the method embodiments of this application.

[0061] Figure 3 This is a schematic diagram of a start-stop control device for a vehicle range extender provided in an embodiment of this application. Figure 3 As shown, the start-stop control device for the vehicle range extender in this embodiment includes:

[0062] The acquisition module 301 is used to acquire the vehicle's power battery charge information, current location information, and driving direction.

[0063] Specifically, the battery charge information can be obtained from the battery management system, the vehicle's current location information can be obtained from the vehicle positioning system, and the driving direction can be collected by the vehicle's driving system. This charge information, current location information, and driving direction can all be aggregated in the vehicle terminal and thus acquired by the acquisition module 301.

[0064] The search module 302 is used to search for the nearest target charging pile to the vehicle in the preset charging pile database based on the current location information, and to obtain the first distance information between the target charging pile and the vehicle.

[0065] Specifically, the charging pile database can be obtained from a cloud server by the vehicle terminal and stored in the vehicle terminal. The charging pile database contains the location information of each charging pile in the current city. Based on the location information of each charging pile and the vehicle's current location information, the distance between the vehicle and each charging pile can be obtained, and thus the nearest target charging pile and its corresponding initial distance information can be obtained.

[0066] The adjustment module 303 is used to adjust the first power threshold for controlling the start and stop of the vehicle range extender according to the first distance information and the set threshold rules, so as to control the start and stop of the vehicle range extender according to the power information and the first power threshold.

[0067] Specifically, a first power threshold is set based on the distance between the vehicle and the target charging station and preset rules. When the vehicle is close to the target charging station, the power threshold can be reduced or a smaller power threshold can be set relative to the originally set fixed threshold. When the vehicle is far from the target charging station, the originally set fixed threshold can be maintained or a larger power threshold can be set relative to the originally set fixed threshold.

[0068] For example, with a fixed threshold of 40%, a first battery level threshold of 30% can be set when the vehicle is 10km or less from the nearest charging station. When the vehicle is more than 10km from the nearest charging station, the first battery level threshold can be set to 40%. Thus, if the current vehicle is 8km from the nearest charging station, the first battery level threshold can be set to 30%.

[0069] When the technical solution of this application embodiment is adopted, when the vehicle is close to the charging source, the power battery is expected to be charged in a short time to replenish the vehicle's electrical energy. Therefore, if the power battery's electrical energy can reach the target charging station, it is not necessary to start the vehicle's range extender or the fuel engine, thereby reducing the number of times the vehicle's range extender starts and stops and fuel consumption.

[0070] When the search module 302 searches for the nearest target charging pile to the vehicle in the preset charging pile database based on the current location information, it can obtain the charging piles in the charging pile database located in the driving direction based on the preset map data, form a charging pile set, obtain the charging pile location information of the charging piles in the charging pile set, obtain the vehicle-to-charging pile distance between the vehicle and the charging piles in the charging pile set based on the current location information and the charging pile location information, and select the target charging pile closest to the vehicle based on the vehicle-to-charging pile distance.

[0071] Specifically, the distance between the vehicle and each charging pile in the charging pile database located ahead of the vehicle in the direction of travel can be determined based on the current location information and the charging pile location information in the charging pile database. The target charging pile with the smallest distance from the vehicle in the direction of travel is selected, and the first power threshold is determined according to the threshold rules mentioned above based on the distance between the vehicle and the target charging pile. Here, "ahead of the direction of travel" can be understood as the left front, right front, or directly in front of the vehicle, or it can be understood as the road ahead on the road on which the vehicle is traveling.

[0072] In this embodiment of the application, the set threshold rule can be that the first power threshold changes with the distance between the vehicle and the target charging pile in the form of a linear function, a curve function, or a piecewise function.

[0073] Specifically, when the first battery level threshold changes as a linear function of the distance between the vehicle and the target charging station, this linear function can be a decreasing function. For example, in a linear function representing the change in distance between the vehicle and the target charging station, when the distance is 0km to 10km, the corresponding first battery level threshold is 30% to 40%. In this case, the threshold rule is that the first battery level threshold changes as a linear function of the distance between the vehicle and the target charging station. Under this threshold rule represented by the linear function, when the distance between the vehicle and the target charging station is 5km, the corresponding first battery level threshold is 35%, and when the distance is 8km, the corresponding first battery level threshold is 38%.

[0074] Specifically, when the first battery threshold changes as a function of the distance between the vehicle and the target charging station, the linear function can be a decreasing function, that is, as the distance between the vehicle and the target charging station decreases, the first battery threshold decreases.

[0075] Specifically, when the first battery threshold changes in a piecewise function manner with the distance between the vehicle and the target charging station, if the distance between the vehicle and the target charging station decreases by a set first value, the first battery threshold decreases. Furthermore, between different segments of the piecewise function, as the minimum distance value of each segment decreases, the first battery threshold decreases. Here, the first value is a value greater than or equal to the segment length; therefore, decreasing the first value allows the distance between the vehicle and the target charging station to cross the current segment, thus demonstrating that the battery threshold decreases with the distance between the vehicle and the target charging station.

[0076] When controlling the start and stop of the vehicle range extender based on the power information and the first power threshold, if the remaining power of the power battery represented by the power information is less than or equal to the first power threshold, the vehicle range extender is started; if the remaining power is greater than the first power threshold, the vehicle range extender is stopped.

[0077] Vehicle range extenders have multiple operating modes. Typically, a battery charge threshold can be set as the switching point for the range extender to start. The range extender starts when the remaining charge of the battery is less than or equal to this switching point. It does not start when the remaining charge of the battery is greater than this switching point.

[0078] In the technical solution of this application embodiment, the charging pile information in the charging pile database can be generated based on the vehicle's previous parking and charging records, and the charging pile information includes the charging pile location information.

[0079] After a parking and charging process is completed, the charging pile information is recorded in the charging pile database. This information includes the charging pile identifier, the charging pile category, and the charging pile location. The charging pile category can be classified as either for residential or commercial use. For example, residential charging piles are those located in fixed parking spaces, while commercial charging piles are those located in charging stations. The charging pile location information indicates the location of the charging pile, which can be either a fixed parking space or a charging station.

[0080] The charging station database can also include information on all available charging stations in the current city. Based on the vehicle's direction of travel, a target charging station can be selected from those in front of the vehicle, according to the vehicle's location. "In front of the vehicle" includes the left front, directly front, and right front in the direction of travel. For example, when the vehicle is traveling due west, the charging stations in front of the vehicle include those to the west, northwest, and southwest.

[0081] Furthermore, the system can select the road where the vehicle is located based on its driving direction and current position, and then select the nearest target charging station on the road ahead of the vehicle along that road.

[0082] In this embodiment, when the remaining charge of the power battery is a second value, the charge threshold can be adjusted according to the distance between the vehicle and the target charging station. This second value can be a fixed charge threshold.

[0083] When the vehicle range extender starts, the generator charges the power battery, increasing the battery's SOC value. Before the SOC setting value is reached, the vehicle range extender will not be shut down. Instead, the excess power will be stored in the power battery until the SOC value reaches the setting value, at which point the engine will shut off.

[0084] After the adjustment module 303 adjusts the battery power threshold, if the remaining battery power is less than or equal to the adjusted threshold, the vehicle range extender is activated. At this time, if the range extender charges the battery, the stored energy is replenished. A target battery power level (SOC setting) can be preset, and the charging time required to reach the target level can be calculated. Based on this charging time and the current vehicle speed, the vehicle's location information at the time of charging completion can be estimated. Based on the vehicle's location information at the time of charging completion and the location information of the target charging station, a second distance information between the vehicle and the target charging station at the time of charging completion can be obtained. Based on this second distance information, a new battery power threshold can be determined again according to the threshold rules, and the start / stop of the vehicle range extender can be controlled according to the new battery power threshold.

[0085] Specifically, when the vehicle's range extender is started, the internal combustion engine is activated. The internal combustion engine can either drive the vehicle alone or charge the battery while driving the vehicle. While the vehicle is charging the battery with the internal combustion engine, the charging time to the target charge level can be estimated based on the range extender's power output and the battery's battery and charge information. Secondary distance information between the vehicle and the target charging station is obtained based on the vehicle's speed and charging time. A second charge threshold for controlling the start and stop of the vehicle's range extender is adjusted based on this secondary distance information and a set threshold rule, thereby controlling the start and stop of the range extender according to the charge information and the second charge threshold.

[0086] In this embodiment, the vehicle's position information up to the point where charging is complete can be estimated based on the charging time and the current vehicle speed. Specifically, the product of the charging time and the current vehicle speed can be used as the distance traveled, and the position at the point where the distance traveled in the direction of travel is taken as the vehicle's position when charging is complete. Alternatively, the position at the point where the distance traveled along the current road is taken as the vehicle's position when charging is complete.

[0087] Since the functional modules of the vehicle range extender start-stop control device in the example embodiments of this application correspond to the steps of the example embodiments of the vehicle range extender start-stop control method described above, for details not disclosed in the device embodiments of this application, please refer to the embodiments of the vehicle range extender start-stop control method described above in this application.

[0088] According to the vehicle range extender start-stop control device of the present application embodiment, by finding the nearest target charging pile to the vehicle, the location of the nearest charging source where the vehicle can be charged is determined, and the power threshold is adjusted according to the distance between the vehicle and the target charging pile. This allows the power threshold to be reduced when the vehicle is close to the target charging pile, thus delaying the start of the vehicle range extender, thereby reducing fuel consumption and improving the user experience.

[0089] Figure 4 This is a schematic diagram of the electronic device 4 provided in an embodiment of this 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, it implements the steps in the various method embodiments described above. Alternatively, when the processor 401 executes the computer program 403, it implements the functions of each module in the various device embodiments described above.

[0090] Electronic device 4 can be a desktop computer, laptop, handheld computer, cloud server, or other electronic device. Electronic device 4 may include, but is not limited to, processor 401 and memory 402. Those skilled in the art will understand that... Figure 4This is merely an example of electronic device 4 and does not constitute a limitation on electronic device 4. It may include more or fewer components than shown, or different components.

[0091] The processor 401 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0092] The memory 402 can be an internal storage unit of the electronic device 4, such as a hard disk or RAM of the electronic device 4. The memory 402 can also be an external storage device of the electronic device 4, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, Flash Card, etc., equipped on the electronic device 4. The memory 402 can also include both internal and external storage units of the electronic device 4. The memory 402 is used to store computer programs and other programs and data required by the electronic device.

[0093] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above 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 integrated unit can be implemented in hardware or as a software functional unit.

[0094] If an integrated module is implemented as 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, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program may include computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. A computer-readable medium may include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in a computer-readable medium can be appropriately added to or subtracted according to the requirements of legislation and patent practice in a jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0095] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A start-stop control method for a vehicle range extender, characterized in that, The method includes: Obtain information on the vehicle's battery charge level, current location, and driving direction; Based on the current location information, the system searches a preset charging pile database for the target charging pile that is closest to the vehicle in the direction of travel, and obtains the first distance information between the target charging pile and the vehicle. The first power threshold for controlling the start and stop of the vehicle range extender is adjusted according to the first distance information and the set threshold rules, so as to control the start and stop of the vehicle range extender according to the power information and the first power threshold. Controlling the start and stop of the vehicle range extender based on the battery information and the first battery threshold includes: If the remaining charge of the power battery, as indicated by the power information, is less than or equal to the first power threshold, the vehicle range extender is controlled to start. If the remaining battery power is greater than the first battery power threshold, control the vehicle range extender to stop. The control of starting the vehicle range extender includes: starting the engine to charge the power battery; After the engine is started to charge the power battery, the method further includes: The charging time to the target charge is estimated based on the power generation capacity of the vehicle range extender and the battery and charge information of the power battery. The second distance information between the vehicle and the target charging pile is obtained based on the vehicle speed information and the charging time. The second battery threshold for controlling the start and stop of the vehicle range extender is adjusted according to the second distance information and the set threshold rules, so as to control the start and stop of the vehicle range extender according to the battery information and the second battery threshold. The set threshold rules include: the first battery threshold changes with the distance between the vehicle and the target charging pile in the form of a linear function, a curvilinear function, or a piecewise function; the linear function and the curvilinear function are decreasing functions; the first battery threshold changes with the distance between the vehicle and the target charging pile in the form of a piecewise function, and the set threshold rules include: when the distance between the vehicle and the target charging pile decreases by a set first value, the first battery threshold decreases.

2. The method according to claim 1, characterized in that, The charging pile information in the charging pile database is generated based on the vehicle's past parking and charging records, and the charging pile information includes the charging pile's location information.

3. The method according to claim 2, characterized in that, Based on the current location information, the system searches a preset charging pile database for the nearest target charging pile located ahead of the vehicle in the direction of travel, including: The charging piles located ahead of the driving direction are obtained from the charging pile database based on the preset map data, and a charging pile set is formed. Obtain the location information of the charging piles in the set of charging piles; The vehicle-to-charging-pile distance between the vehicle and the charging piles in the charging pile set is obtained based on the current location information and the charging pile location information. Select the target charging station closest to the vehicle based on the vehicle-charging station distance.

4. A start-stop control device for a vehicle range extender, characterized in that, The device includes: The acquisition module is used to acquire information such as the vehicle's power battery charge level, current location, and driving direction. The search module is used to search for the nearest target charging pile to the vehicle in a preset charging pile database based on the current location information, and to obtain the first distance information between the target charging pile and the vehicle. An adjustment module is used to adjust a first power threshold for controlling the start and stop of the vehicle range extender according to the first distance information and a set threshold rule, so as to control the start and stop of the vehicle range extender according to the power information and the first power threshold. Controlling the start and stop of the vehicle range extender based on the battery information and the first battery threshold includes: If the remaining charge of the power battery, as indicated by the power information, is less than or equal to the first power threshold, the vehicle range extender is controlled to start. If the remaining battery power is greater than the first battery power threshold, control the vehicle range extender to stop. The control of starting the vehicle range extender includes: starting the engine to charge the power battery; After the engine is started to charge the power battery, the adjustment module is further used for: The charging time to the target charge is estimated based on the power generation capacity of the vehicle range extender and the battery and charge information of the power battery. The second distance information between the vehicle and the target charging pile is obtained based on the vehicle speed information and the charging time. The second battery threshold for controlling the start and stop of the vehicle range extender is adjusted according to the second distance information and the set threshold rules, so as to control the start and stop of the vehicle range extender according to the battery information and the second battery threshold. The set threshold rules include: the first battery threshold changes with the distance between the vehicle and the target charging pile in the form of a linear function, a curvilinear function, or a piecewise function; the linear function and the curvilinear function are decreasing functions; the first battery threshold changes with the distance between the vehicle and the target charging pile in the form of a piecewise function, and the set threshold rules include: when the distance between the vehicle and the target charging pile decreases by a set first value, the first battery threshold decreases.

5. 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, it implements the steps of the method as described in any one of claims 1 to 3.

6. A readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 3.

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