Vehicle operation mode control method, device, controller, vehicle and storage medium

Abstract

The present invention relates to the field of automobile energy management technology, and discloses a vehicle working mode control method, device, controller, vehicle and storage medium. According to real-time oil price information and electricity price information, the working mode with the lowest driving cost at each operating point during the driving process of the target vehicle is calculated, and the working mode is determined as the target working mode of the operating point, and the mode control strategy of the target vehicle is generated according to the target mode corresponding to each operating point. Therefore, when the target vehicle is at different operating points during the driving process, the working mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy. It can be seen that the present invention pre-calculates the target mode with low cost at each operating point of the target vehicle according to the oil price information and the electricity price information, and then switches the working mode of the target vehicle according to different operating points during the driving process of the target vehicle. Compared with the prior art, the working mode control strategy of the hybrid vehicle is enriched.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile energy management, and in particular to a vehicle operating mode control method, device, controller, vehicle and storage medium. Background Art

[0002] With the promotion of new energy vehicles, various new energy vehicles have sprung up like mushrooms after a rain. For example, plug-in hybrid electric vehicles (PHEV) are currently the most common new energy vehicles.

[0003] At present, the working mode control strategy of plug-in hybrid electric vehicles is usually: give priority to using the electric energy in the battery, that is, pure electric mode, and when the power in the battery drops to the limit power, start the vehicle engine to enter the hybrid mode. Therefore, the existing hybrid electric vehicles have the problem of a relatively simple working mode control strategy. Summary of the invention

[0004] The embodiments of the present invention provide a vehicle operating mode control method, device, computer equipment and storage medium to solve the problem that the existing hybrid electric vehicle has a relatively single operating mode control strategy.

[0005] A vehicle operating mode control method, comprising:

[0006] Get real-time oil and electricity price information;

[0007] According to the oil price information and the electricity price information, determining the working mode with the lowest driving cost of the target vehicle at different operating points as the target mode of the operating point, wherein the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle;

[0008] Generating a mode control strategy for the target vehicle according to the target modes corresponding to all the operating points;

[0009] When the target vehicle is at different operating points during driving, the operating mode of the target vehicle is switched to a target mode corresponding to the operating point according to the mode control strategy.

[0010] In the above method, optionally, determining the operating mode with the lowest driving cost of the target vehicle at different operating points according to the oil price information and the electricity price information as the target mode of the operating point includes:

[0011] Respectively obtaining a set of operating points covered by the target vehicle under different operating modes;

[0012] Determining whether there are overlapping operating points between the operating points in different operating point sets;

[0013] If the overlapping operating point exists, respectively calculating the driving cost of the target vehicle driving in different operating modes at the overlapping operating point according to the oil price information and the electricity price information;

[0014] The operating mode with the smallest driving cost is selected as the target mode of the overlapping operating point.

[0015] In the above method, optionally, the working mode includes a pure electric mode;

[0016] The driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated as follows:

[0017] When the power state of the battery of the target vehicle is a power consumption state, the driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated based on the electricity price information;

[0018] When the power state of the battery of the target vehicle is in the power retention state, the driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated based on the oil price information.

[0019] Optionally, in the above method, when the power state of the battery of the target vehicle is a power consumption state, the pure electric cost of the target vehicle traveling in the pure electric mode at the overlapping operating point is calculated based on the electricity price information, including:

[0020] Obtaining the vehicle speed and the wheel torque corresponding to the overlapping operating point;

[0021] Calculating the battery discharge power of the target vehicle according to the wheel torque and the vehicle speed;

[0022] The driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated according to the vehicle speed, the electricity price information and the battery discharge power.

[0023] In the above method, optionally, when the power state of the battery of the target vehicle is in the power retention state, the pure electric cost of the target vehicle traveling in the pure electric mode at the overlapping operating point is calculated based on the oil price information, including:

[0024] Obtaining the fuel density of the fuel in the target vehicle, and the vehicle speed, the wheel torque and the first fuel consumption rate corresponding to the overlapping operating point;

[0025] Calculating the battery discharge power of the target vehicle according to the wheel torque and the vehicle speed;

[0026] The driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated based on the vehicle speed, the fuel density, the oil price information, the battery discharge power and the first fuel consumption rate.

[0027] In the above method, optionally, the working mode includes a series mode;

[0028] The driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated as follows:

[0029] Obtaining the driving demand power and engine output power of the target vehicle at the overlapping operating point;

[0030] determining whether the driving demand power is greater than the engine output power;

[0031] If the driving demand power is greater than the engine output power, the engine power generation cost and the battery compensation cost are calculated respectively, and the driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated based on the engine power generation cost and the battery replenishment cost;

[0032] If the driving demand power is less than the engine output power, respectively calculating the engine power generation cost and the engine charging cost of the target vehicle, and calculating the driving cost of the target vehicle driving in the series mode at the overlapping operating point based on the engine power generation cost and the engine charging cost;

[0033] If the required driving power is equal to the engine output power, the engine power generation cost is calculated and used as the driving cost of the target vehicle driving in the series mode at the overlapping operating point.

[0034] In the above method, optionally, the working mode includes a parallel mode;

[0035] The driving cost of the target vehicle driving in the parallel mode at the overlapping operating point is calculated as follows:

[0036] Obtaining the driving demand power and engine output power of the target vehicle at the overlapping operating point;

[0037] determining whether the driving demand power is greater than the engine output power;

[0038] If the driving demand power is greater than the engine output power, the engine fuel cost and the battery compensation cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in the parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the battery compensation cost;

[0039] If the driving demand power is less than the engine output power, the engine fuel cost and the engine charging cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in the parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the engine charging cost;

[0040] If the driving demand power is equal to the engine output power, the engine fuel cost of the target vehicle is calculated, and the fuel power generation cost is used as the driving cost of the target vehicle driving in the parallel mode at the overlapping operating point.

[0041] In the above method, optionally, the engine charging cost is calculated by:

[0042] Calculating the remaining output power according to the driving demand power and the engine output power;

[0043] When the power state of the battery of the target vehicle is a power consumption state, the engine charging cost is calculated according to the remaining output power, the vehicle speed corresponding to the overlapping operating point, the electricity price information and the battery charging efficiency of the target vehicle;

[0044] When the power state of the battery of the target vehicle is in the power retention state, the engine charging cost is calculated according to the remaining output power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point, and the first fuel consumption rate is the average fuel consumption rate tested under the WLTC operating condition.

[0045] In the above method, optionally, the battery compensation cost is calculated in the following way:

[0046] Calculating battery compensation power according to the driving demand power and the engine output power;

[0047] When the power state of the battery of the target vehicle is a power consumption state, the battery compensation cost is calculated according to the battery compensation power, the vehicle speed corresponding to the overlapping operating point, and the oil price information;

[0048] When the power state of the battery of the target vehicle is in the power retention state, the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

[0049] A vehicle operating mode control device, comprising:

[0050] An information acquisition unit, used to acquire real-time oil price information and electricity price information;

[0051] A mode determination unit, for determining, according to the oil price information and the electricity price information, a working mode with the lowest driving cost for the target vehicle at different operating points as a target mode for the operating point, wherein the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle;

[0052] A strategy generating unit, configured to generate a mode control strategy of the target vehicle according to the target modes corresponding to all the operating points;

[0053] A strategy execution unit switches the working mode of the target vehicle to a target mode corresponding to the working point according to the mode control strategy when the target vehicle is at different working points during driving.

[0054] A controller comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the controller implements any of the above-mentioned vehicle operating mode control methods when executing the computer program.

[0055] A vehicle, characterized in that it comprises the controller described above.

[0056] A computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements any of the vehicle operating mode control methods described above.

[0057] The above-mentioned vehicle working mode control method, device, controller, vehicle and storage medium calculate the working mode with the lowest driving cost at each operating point during the driving process of the target vehicle based on real-time oil price information and real-time electricity price information, determine the working mode as the target working mode of the operating point, and generate a mode control strategy for the target vehicle based on the target mode corresponding to each operating point, thereby, when the target vehicle is at different operating points during the driving process, the working mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy. It can be seen that the present invention pre-calculates the target mode with low cost at each operating point of the target vehicle based on real-time oil price information and real-time electricity price information, and then switches the working mode of the target vehicle according to the different operating points of the target vehicle during the driving process of the target vehicle, which enriches the purpose of the hybrid vehicle working mode control strategy compared to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0059] Figure 1 It is a flow chart for realizing a vehicle working mode control method disclosed in an embodiment of the present invention;

[0060] Figure 2 It is a partial implementation flow chart of a vehicle working mode control method disclosed in an embodiment of the present invention;

[0061] Figure 3 is a schematic diagram of operating points covered by a target vehicle in different operating modes disclosed in an embodiment of the present invention;

[0062] Figure 4 It is a partial implementation flow chart of a vehicle working mode control method disclosed in an embodiment of the present invention;

[0063] Figure 5 It is a partial implementation flow chart of a vehicle working mode control method disclosed in an embodiment of the present invention;

[0064] Figure 6 It is a partial implementation flow chart of a vehicle working mode control method disclosed in an embodiment of the present invention;

[0065] Figure 7 It is a partial implementation flow chart of a vehicle working mode control method disclosed in an embodiment of the present invention;

[0066] Figure 8It is a partial implementation flow chart of a vehicle working mode control method disclosed in an embodiment of the present invention;

[0067] Fig. 9 It is a structural schematic diagram of a vehicle working mode control device disclosed in an embodiment of the present invention;

[0068] Fig.10 It is a schematic diagram of a control structure disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0071] It should also be understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0072] As used in the present specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]", depending on the context.

[0073] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0074] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0075] The present invention discloses a vehicle working mode control method, device, controller, vehicle and storage medium. According to real-time oil price information and real-time electricity price information, the working mode with the lowest driving cost at each operating point during the driving process of the target vehicle is calculated, the working mode is determined as the target working mode of the operating point, and the mode control strategy of the target vehicle is generated according to the target mode corresponding to each operating point. Thus, when the target vehicle is at different operating points during the driving process, the working mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy. It can be seen that the present invention pre-calculates the target mode with low cost at each operating point of the target vehicle according to the oil price information and the electricity price information, and then switches the working mode of the target vehicle according to the different operating points of the target vehicle during the driving process of the target vehicle. Compared with the prior art, the purpose of the hybrid vehicle working mode control strategy is enriched.

[0076] like Figure 1 FIG. 1 is a flow chart of a method for controlling a vehicle working mode disclosed in an embodiment of the present invention. The method is applicable to hybrid vehicles. The method in this embodiment may specifically include the following steps:

[0077] S101: Acquire real-time oil price information and electricity price information.

[0078] In one embodiment, in this embodiment, the target vehicle's vehicle system can automatically access the Internet to obtain regional oil prices and regional electricity prices as real-time oil price information and electricity price information. For example, in this embodiment, the regional information of the target vehicle's area can be obtained through the positioning function of the vehicle system, and the local oil price information and electricity price information can be queried based on the regional information, thereby obtaining real-time oil price information and electricity price information. Among them, the positioning function includes but is not limited to GPS positioning, Beidou positioning, etc.

[0079] In another embodiment, in this embodiment, the oil price information and electricity price information can be manually input into the vehicle system of the target vehicle, or the oil price information and electricity price information can be manually input through the mobile phone APP of the target vehicle, and then sent to the vehicle system of the target vehicle through the mobile phone APP, thereby obtaining real-time oil price information and electricity price information. For example, in this embodiment, the electricity price information and oil price information can be manually input into the electricity price information and oil price information input page of the vehicle system.

[0080] It should be noted that for oil prices, due to different gas station brands and / or gas station locations, oil prices may vary. For electricity prices, due to different charging methods, electricity prices may also vary. For example, the electricity prices of home charging piles and public charging piles are different. The electricity prices of public charging piles are also different during different charging periods (such as peak periods and off-peak periods). In this case, it is necessary to manually input the oil price information and electricity price information to obtain more accurate oil price information and electricity price information.

[0081] S102: Determine, based on the oil price information and the electricity price information, the operating mode with the lowest driving cost for the target vehicle at different operating points as the target mode for the operating point.

[0082] In one embodiment, the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle. According to the speed range and the torque range, the vehicle speed points and torque points are evenly divided into multiple speed points and torque points, and the speed points and torque points are matched one by one to obtain the operating point of the target vehicle.

[0083] For example, assuming that the speed range of the target vehicle is 0 to 160 km / h and the torque range of the target vehicle is 0 to 4000 N.m, the operating points can be as follows: (20 km / h, 500 N.m), (20 km / h, 600 N.m), (20 km / h, 700 N.m), etc., where (20 km / h, 500 N.m) represents the operating point with a speed of 20 km / h and a wheel torque of 500 N.m, (20 km / h, 600 N.m) represents the operating point with a speed of 20 km / h and a wheel torque of 600 N.m, and so on. The required operating points can be divided according to the speed range and torque range.

[0084] In one embodiment, the working mode of the target vehicle in this embodiment includes but is not limited to pure electric mode, series mode and parallel mode, among which the series mode is the series extended range mode of the hybrid vehicle, and the parallel mode is the parallel hybrid mode of the hybrid vehicle. For the same operating point, if the operating point is only covered by one operating mode, then the target mode of the operating point is the operating mode. For example, if the operating point can only be covered by the pure electric mode, then the operating mode with the lowest driving cost at the operating point is the pure electric mode. Therefore, the target mode corresponding to the operating point is the pure electric mode. If the operating point can only be covered by the parallel mode, then the operating mode with the lowest driving cost at the operating point is the parallel mode. Therefore, the target mode corresponding to the operating point is the parallel mode.

[0085] In another embodiment, for the same operating point, if the operating point is covered by two or more operating modes, the driving costs of the target vehicle driving in different operating modes at the operating point are calculated respectively, and then the operating mode with the lowest driving cost is used as the target mode of the operating point. For example, taking the operating points covered by the pure electric mode, the series mode and the parallel mode as an example, the driving cost of the target vehicle driving in the pure electric mode, the driving cost of driving in the series mode and the driving cost of driving in the parallel mode at the operating point are calculated respectively, and the driving costs of these three modes are compared respectively. If the operating mode with the lowest driving cost is the pure electric mode, then the target mode corresponding to the operating point is the pure electric mode. If the operating mode with the lowest driving cost is the series mode, then the target mode corresponding to the operating point is the series mode, and so on.

[0086] S103: Generate a mode control strategy for the target vehicle according to the target modes corresponding to all operating points.

[0087] S104: When the target vehicle is at different operating points during driving, the operating mode of the target vehicle is switched to a target mode corresponding to the operating point according to a mode control strategy.

[0088] That is to say, when the target modes corresponding to all operating points are calculated, all operating points and the target modes corresponding to all operating points are the mode control strategy of the target vehicle. During the driving process of the target vehicle, each time the target vehicle enters an operating point, the operating mode of the target vehicle is switched to the target mode corresponding to the operating point.

[0089] The present invention discloses a vehicle working mode control method, which calculates the working mode with the lowest driving cost at each operating point during the driving process of the target vehicle according to real-time oil price information and real-time electricity price information, determines the working mode as the target working mode at the operating point, and generates a mode control strategy for the target vehicle according to the target mode corresponding to each operating point, thereby, when the target vehicle is at different operating points during the driving process, the working mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy. It can be seen that the present invention pre-calculates the target mode with low cost at each operating point of the target vehicle according to the oil price information and the electricity price information, and then switches the working mode of the target vehicle according to the different operating points of the target vehicle during the driving process of the target vehicle, which enriches the purpose of the hybrid vehicle working mode control strategy compared to the prior art.

[0090] based on Figure 1 In the specific implementation, step S202 in this embodiment can be implemented as follows: Figure 2 As shown:

[0091] S201: Obtaining respectively a set of operating points covered by the target vehicle in different operating modes.

[0092] S202: Determine whether there are overlapping operating points between operating points in different operating point sets.

[0093] It should be understood that in different working modes, the maximum wheel end torque that the target vehicle can achieve at different speeds is different. Therefore, the operating points covered by the target vehicle in different working modes are also different. Figure 3 As shown, it is a schematic diagram of the operating points covered by the target vehicle in different working modes, wherein curve 1 is the wheel-end torque curve at different vehicle speeds when the target vehicle is in parallel mode, curve 2 is the wheel-end torque curve at different vehicle speeds when the target vehicle is in pure electric mode, curve 3 is the wheel-end torque curve at different vehicle speeds when the target vehicle is in series mode, and curve 4 is the wheel-end torque curve at different vehicle speeds when the target vehicle is in series mode. Below curve 1 are all operating points covered in parallel mode, below curve 2 are all operating points covered in pure electric mode, below curve 3 are all operating points covered in series mode, and at the same time, the operating points under any two or more of curves 1, curve 2 and curve 3 are overlapping operating points.

[0094] In a specific implementation, this embodiment can determine whether an operating point is an overlapping operating point by determining whether the operating point is covered by two or more operating modes at the same time. For example, if an operating point is only covered by the pure electric mode, then the operating point is not an overlapping operating point. If the operating point is only covered by the parallel mode, then the operating point is not an overlapping operating point. If the operating point is covered by the pure electric mode and the series mode at the same time, then the operating point is an overlapping operating point. If the operating point is covered by the pure electric mode, the parallel mode and the series mode at the same time, then the operating point is an overlapping operating point. By analogy, the judgment of all operating points can be realized, thereby determining all overlapping operating points.

[0095] S203: If there are overlapping operating points, the driving costs of the target vehicle driving in different working modes at the overlapping operating points are calculated respectively according to the oil price information and the electricity price information.

[0096] If the overlapping operating point is covered by two operating modes, the driving cost of the target vehicle in the two operating modes needs to be calculated based on the oil price information and the electricity price information. If the overlapping operating point is covered by three operating modes, the driving cost of the target vehicle in the three operating modes needs to be calculated based on the oil price information and the electricity price information. In different operating modes, the method of calculating the driving cost is different according to the different battery power status of the target vehicle, as shown below:

[0097] In one embodiment, the driving cost of the target vehicle in pure electric mode at the overlapping operating point can be calculated as follows: Figure 4 As shown:

[0098] S401: When the power state of the target vehicle's battery is a power consumption state, based on the electricity price information, the driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated.

[0099] S402: When the power state of the battery of the target vehicle is in the power retention state, the driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated based on the oil price information.

[0100] It should be understood that the power in the battery of a hybrid vehicle can be directly obtained from the power grid, that is, the battery can be charged through a home charging pile or a public charging pile, or the battery can be charged through the engine of the target vehicle. It should be noted that when the battery is fully charged, the power state of the battery is a power consumption state, that is, there is sufficient power in the battery that can be consumed, and the consumed power comes from the power grid. Therefore, the driving cost of the target vehicle in the overlapping operating point in pure electric mode needs to be calculated according to the electricity price information; when the power in the battery is consumed to the minimum retention power, such as the minimum retention power is 20%, if the battery is not charged by the charging pile again, the power state of the battery is a power retention state. If the power in the battery is less than 20%, it is necessary to drive the generator to charge the battery by burning fuel through the engine. At this time, the consumed power comes from the engine generating electricity through fuel. Therefore, the driving cost of the target vehicle in the overlapping operating point in pure electric mode needs to be calculated according to the oil price information. In addition, the minimum retention power in this embodiment can also be 25%, 30%, etc., which is not limited in this embodiment.

[0101] In one embodiment, when the target vehicle battery power state is in the power consumption state, the driving cost of the target vehicle in the pure electric mode at the overlapping operating point can be calculated as follows. Figure 5 As shown:

[0102] S501: Obtain the vehicle speed and wheel torque corresponding to the overlapping operating point.

[0103] It can be understood that each operating point corresponds to a vehicle speed and a wheel torque, so when the operating point is determined, the vehicle speed and wheel torque corresponding to the operating point can be directly obtained. Therefore, the vehicle speed and wheel torque corresponding to the overlapping operating points can be obtained.

[0104] S502: Calculate the battery discharge power of the target vehicle according to the wheel torque and the vehicle speed.

[0105] It should be noted that to calculate the battery discharge power, it is necessary to first calculate the output power of the target vehicle's drive motor, and then calculate the battery discharge power based on the output power of the drive motor.

[0106] The output speed of the drive motor is calculated according to the vehicle speed, and then the output power of the drive motor is calculated according to the output speed and the wheel torque, and then the battery discharge efficiency is calculated according to the output power of the drive motor and the conversion efficiency of the battery. The conversion efficiency of the battery is set according to actual needs, and the conversion efficiency is not limited in this embodiment.

[0107] In one embodiment, the output power of the driving motor can be calculated by the following formula:

[0108]

[0109] Among them, P q represents the output power of the drive battery, n represents the output speed of the drive motor, and T represents the wheel torque of the drive motor.

[0110] After the output power of the drive motor is calculated based on the above formula, the discharge power of the battery can be calculated by the following formula in this embodiment:

[0111]

[0112] Among them, P b Indicates the battery discharge efficiency, P q represents the output power of the driving battery, η z Indicates the conversion efficiency of the battery.

[0113] S503: Calculate the driving cost of the target vehicle in pure electric mode at the overlapping operating point according to the vehicle speed, electricity price information and battery discharge power.

[0114] In a specific implementation, in this embodiment, the vehicle speed, electricity price information and battery discharge power can be input into the following formula to calculate the driving cost of the target vehicle in pure electric mode at the overlapping operating point:

[0115]

[0116] Among them, P b represents the battery discharge efficiency, V represents the vehicle speed, Y 1 Indicates electricity price information. Represents the driving cost.

[0117] In one embodiment, when the battery state of the target vehicle is in the power retention state, the driving cost of the target vehicle in the pure electric mode at the overlapping operating point can be calculated as follows. Figure 6 As shown:

[0118] S601: Obtain the fuel density of the fuel in the target vehicle, as well as the vehicle speed, wheel torque and first fuel consumption rate corresponding to the overlapping operating point.

[0119] In one embodiment, the fuel density of the fuel in the target vehicle can be manually input into the vehicle system, or obtained by real-time testing of the fuel density by a fuel density testing device in the fuel tank, or by establishing a fuel density prediction model to predict the fuel density based on the ambient temperature in the fuel tank. The specific method for obtaining the fuel density is not limited in this embodiment.

[0120] In one embodiment, since the target vehicle is traveling in a pure electric mode while maintaining power, the driving cost needs to be calculated based on the oil price information. However, since the engine is not started, the engine fuel consumption rate cannot be calculated. Therefore, the average fuel consumption rate of the target vehicle under the WLTC condition is selected as the first fuel consumption rate to participate in the calculation of the driving cost.

[0121] S602: Calculate the battery discharge power of the target vehicle according to the wheel torque and the vehicle speed.

[0122] The output speed of the drive motor is calculated according to the vehicle speed, and then the output power of the drive motor is calculated according to the output speed and the wheel torque. Then the battery discharge efficiency is calculated according to the output power of the drive motor and the conversion efficiency of the battery.

[0123] S603: Calculate the driving cost of the target vehicle in pure electric mode at the overlapping operating point according to the vehicle speed, fuel density, oil price information, battery discharge power and the first fuel consumption rate.

[0124] In a specific implementation, in this embodiment, the vehicle speed, fuel density, oil price information, battery discharge power and the first fuel consumption rate can be input into the following formula to calculate the driving cost of the target vehicle in pure electric mode at the overlapping operating point:

[0125]

[0126] Among them, P b represents the battery discharge power, V represents the vehicle speed, Y 2 Indicates oil price information. represents the driving cost, represents the first fuel consumption rate under WLTC condition, ρ fuel Indicates fuel density.

[0127] It should be noted that when the battery of the target vehicle is in a power consumption state, it can have a higher battery discharge power than when it is in a power retention state. In other words, when the battery is in a power retention state, the battery discharge power is lower. Therefore, the maximum wheel torque of the target vehicle in the power retention state is lower than the wheel torque in the power consumption state.

[0128] To sum up, in this embodiment, by respectively calculating the driving costs of the target vehicle in the power consumption state and the power maintenance state, the working mode with the lowest driving cost at the overlapping operating point can be more accurately determined, which is beneficial to improving the economy of the target vehicle in working mode control.

[0129] In one embodiment, the driving cost of the target vehicle driving in series mode at the overlapping operating point can be calculated as follows: Figure 7 As shown:

[0130] S701: Obtain the driving demand power and engine output power of the target vehicle at the overlapping operating point.

[0131] It should be understood that in the series mode, the target vehicle can only output power through the drive motor to drive the target vehicle to travel. Therefore, the driving demand power of the target vehicle at the overlapping operating point is the output power of the drive motor, and the engine output power is the power generated by the engine driving the generator. The vehicle speed and wheel torque corresponding to the overlapping operating point are obtained, and the output speed of the drive motor is calculated according to the vehicle speed, and then the output power of the drive motor is calculated according to the output speed and the wheel torque. In the series mode, that is, the series extended range mode, the engine and the drive motor of the target vehicle are completely decoupled, and the engine is always running at a constant power, such as the engine is always running at the highest thermal efficiency. That is to say, the engine is always running at a constant state, and the power generation power of the engine remains unchanged. By calibrating the engine output power in the vehicle system, or obtaining the output voltage and output current of the engine in real time through the power calculation device, and then calculating the engine output power in real time, the specific implementation method of obtaining the engine output power is not limited in this embodiment.

[0132] S702: Determine whether the driving demand power is greater than the engine output power.

[0133] If the driving demand power is greater than the engine output power, the engine power generation cost and the battery compensation cost are calculated respectively, and the driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated based on the engine power generation cost and the battery replenishment cost; if the driving demand power is less than the engine output power, the engine power generation cost and the battery compensation cost are calculated respectively, and the driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated based on the engine power generation cost and the battery replenishment cost; if the driving demand power is equal to the engine output power, the engine power generation cost is calculated, and the engine power generation cost is used as the driving cost of the target vehicle driving in the series mode at the overlapping operating point.

[0134] S703: If the driving demand power is greater than the engine output power, the engine power generation cost and the battery compensation cost of the target vehicle are calculated respectively, and based on the engine power generation cost and the battery compensation cost, the driving cost of the target vehicle driving in series mode at the overlapping operating point is calculated.

[0135] It should be noted that if the driving power requirement is greater than the engine output power, it means that the engine cannot provide enough electrical energy to the drive motor, and the battery needs to provide additional electrical energy to the drive motor, so that the output power of the drive motor can reach the driving power requirement. Among them, the cost of the engine providing electrical energy is the engine charging cost, and the cost of the battery providing electrical energy is the battery compensation cost. After obtaining the engine power generation cost and battery compensation cost of the target vehicle, add the engine power generation cost and the battery compensation cost to obtain the driving cost of the target vehicle driving in series mode at the overlapping operating point.

[0136] In one embodiment, since the power generation capacity of the engine of the target vehicle in this embodiment is certain, the power generation cost of the engine is also certain. Therefore, the power generation cost of the engine can be directly calibrated in the vehicle system of the target vehicle, thereby obtaining the power generation cost of the engine.

[0137] In another embodiment, the engine power generation cost can be calculated by the engine output power, the vehicle speed corresponding to the overlapping operating point, the fuel consumption rate, the fuel density and the oil price information. The engine power generation cost in this embodiment can be calculated by the following formula:

[0138]

[0139] Among them, P ice× represents the engine output power, V represents the vehicle speed, Y 2 Indicates oil price information, RMB fule represents the driving cost, be represents the second fuel consumption rate of the engine under a steady state, ρ fuel Indicates fuel density.

[0140] In one embodiment, if the power state of the target vehicle's battery is a power consumption state, the battery compensation power is calculated based on the driving demand power and the engine output power, and the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, and the oil price information.

[0141] It should be noted that when the power state of the battery of the target vehicle is a power consumption state, there is sufficient power in the battery, and therefore, the battery compensation cost is calculated based on the electricity price information.

[0142] Input the battery compensation power, vehicle speed corresponding to the overlapping operating point, and oil price information into the following formula to calculate the battery compensation cost:

[0143]

[0144] Among them, P b represents the battery compensation power, V represents the vehicle speed, Y1 Indicates electricity price information. Indicates the battery compensation cost.

[0145] In one embodiment, if the charge state of the battery of the target vehicle is in the charge retention state, the battery compensation power is calculated based on the driving demand power and the engine output power, and the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

[0146] It should be noted that when the battery power state of the target vehicle is in the power retention state, the power in the battery mainly comes from the engine power generation. Therefore, the battery compensation cost is calculated based on the oil price information.

[0147] The battery compensation power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point are input into the following formula to calculate the battery compensation cost:

[0148]

[0149] Among them, P b represents the battery compensation power, V represents the vehicle speed, Y 2 Indicates oil price information. represents the battery compensation cost, represents the first fuel consumption rate, that is, the average fuel consumption rate under WLTC conditions, ρ fuel Indicates fuel density.

[0150] S704: If the driving demand power is less than the engine output power, the engine power generation cost and the engine charging cost are calculated respectively, and the driving cost of the target vehicle driving in series mode at the overlapping operating point is calculated based on the engine power generation cost and the engine charging cost.

[0151] It should be noted that if the driving power demand is less than the engine output power, it means that the electric energy output by the engine is completely sufficient to meet the electric energy demand of the drive motor, and there is surplus electric energy. Therefore, this part of the surplus electric energy can be stored in the battery, which can not only meet the driving power demand, but also avoid waste of resources. Among them, the cost of the engine providing electric energy is the engine power generation cost, and the cost of storing batteries in the battery is the engine charging cost. The engine power generation cost is certain, but charging the battery achieves the purpose of saving energy, and the electric energy stored in the battery can also be used to power the drive motor. Therefore, by subtracting the engine charging cost from the engine power generation cost, the driving cost of the target vehicle in series mode at the overlapping operating point is obtained.

[0152] In one embodiment, when the power state of the battery of the target vehicle is a power consumption state, the remaining output power is calculated based on the driving demand power and the engine output power, and the engine charging cost is calculated based on the remaining output power, the vehicle speed corresponding to the overlapping operating point, the electricity price information and the battery charging efficiency of the target vehicle.

[0153] It should be noted that when the target vehicle's battery power state is a power consumption state, there is sufficient power in the battery. Although the engine can charge the battery, the power in the battery mainly comes from the power grid. Therefore, when the target vehicle's battery power state is a power consumption state, the engine charging cost is calculated according to the electricity price information.

[0154] Specifically, the engine output power is subtracted from the driving demand power to obtain the remaining output power. The remaining output power, the vehicle speed corresponding to the overlapping operating point, the electricity price information, and the battery charging efficiency of the target vehicle are input into the following formula to calculate the engine charging cost:

[0155]

[0156] Among them, P b represents the remaining output power, V represents the vehicle speed, Y 1 Indicates electricity price information. represents the engine charging cost, η charge Indicates charging efficiency.

[0157] In one embodiment, if the charge state of the battery of the target vehicle is in the charge retention state, the engine charging cost is calculated according to the driving demand power and the engine output power, the remaining output power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

[0158] It should be noted that when the target vehicle's battery power state is in the power retention state, the power in the battery mainly comes from the engine power generation. Therefore, when the target vehicle's battery power state is in the power retention state, the engine charging cost is calculated according to the oil price information.

[0159] Specifically, the remaining output power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle, and the first fuel consumption rate corresponding to the overlapping operating point are input into the following formula to calculate the engine charging cost:

[0160]

[0161] Among them, P b represents the remaining output power, V represents the vehicle speed, Y 2 Indicates oil price information. represents the engine charging cost, η charge represents the charging efficiency, be represents the second fuel consumption rate of the engine under a steady state, ρ fuel Indicates fuel density.

[0162] S705: If the driving demand power is equal to the engine output power, the engine power generation cost is calculated, and the engine power generation cost is used as the driving cost of the target vehicle driving in the series mode at the overlapping operating point.

[0163] If the driving demand power is equal to the engine output power, it means that the electric energy output by the engine just meets the electric energy required by the drive motor. Therefore, there is no need for a battery to power the drive motor, nor is there a need to charge the battery. The drive motor power generation cost is the driving cost of the target vehicle driving in series mode at the overlapping operating point.

[0164] To sum up, in this embodiment, the power state of the target vehicle's battery is divided into a power consumption state and a power retention state, and then the driving cost of the target vehicle driving in a series mode at overlapping operating points is calculated separately according to the different battery states, so that the calculation of the driving cost is more in line with reality, which is conducive to improving the accuracy of the driving cost calculation.

[0165] In one embodiment, the driving cost of the target vehicle driving in parallel mode at the overlapping operating point can be calculated as follows: Figure 8 As shown:

[0166] S801: Obtaining the driving demand power and engine output power of the target vehicle at the overlapping operating point.

[0167] It should be noted that in parallel mode, the target vehicle outputs power mainly based on the engine directly driving the wheels, that is, the engine output power is the actual output power of the engine, and the engine output power of the target vehicle is in a relatively stable state, such as the engine outputting power close to the highest working efficiency. The wheel end speed is calculated based on the vehicle speed corresponding to the overlapping operating point, and the driving demand power is calculated based on the wheel end speed and wheel end torque.

[0168] In a specific implementation, in this embodiment, the engine output power can be manually input into the vehicle system of the target vehicle, or the engine output power can be calculated in real time by obtaining the engine speed and torque. The specific calculation method of the engine output power is not limited in this embodiment.

[0169] S802: Determine whether the driving demand power is greater than the engine output power.

[0170] If the driving demand power is greater than the engine output power, the engine fuel cost and the battery compensation cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the battery compensation cost; if the driving demand power is less than the engine output power, the engine fuel cost and the engine charging cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the engine charging cost; if the driving demand power is equal to the engine output power, the engine fuel cost of the target vehicle is calculated, and the fuel power generation cost is used as the driving cost of the target vehicle driving in parallel mode at the overlapping operating point.

[0171] S803: If the driving demand power is greater than the engine output power, the engine fuel cost and the battery compensation cost of the target vehicle are calculated respectively, and based on the engine fuel cost and the battery compensation cost, the driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated.

[0172] It should be noted that if the driving demand power is greater than the engine output power, it means that the engine cannot provide sufficient output power, and the battery is needed to power the drive motor so that the drive motor can provide additional output power. Among them, the cost of the engine output power is the engine fuel cost, and the cost of the battery powering the drive motor is the battery compensation cost. After obtaining the engine fuel cost and the battery compensation cost, add the engine fuel cost and the battery compensation cost to obtain the driving cost of the target vehicle driving in parallel mode at the overlapping operating point.

[0173] In one embodiment, the engine output power of the target vehicle in this embodiment is in a relatively stable state, so the engine fuel cost is also relatively stable. Therefore, the engine fuel cost can be directly calibrated in the vehicle system of the target vehicle, thereby, the engine fuel cost can be obtained by the output torque and output speed.

[0174] In another embodiment, the engine fuel cost can be calculated by the engine output power, the vehicle speed corresponding to the overlapping operating point, the second fuel consumption rate, the fuel density and the oil price information. The engine power generation cost in this embodiment can be calculated by the following formula:

[0175]

[0176] Among them, P ice× represents the engine output power, V represents the vehicle speed, Y 2 Indicates oil price information. represents the engine fuel cost, be represents the second fuel consumption rate, ρ fuelIndicates fuel density. The second fuel consumption rate is the fuel consumption rate found in the gravitational characteristic curve according to the wheel torque and vehicle speed.

[0177] In one embodiment, if the power state of the target vehicle's battery is a power consumption state, the battery compensation power is calculated based on the driving demand power and the engine output power, and the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, and the oil price information.

[0178] In one embodiment, if the charge state of the battery of the target vehicle is in the charge retention state, the battery compensation power is calculated based on the driving demand power and the engine output power, and the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

[0179] S804: If the driving demand power is less than the engine output power, the engine fuel cost and the engine charging cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the engine charging cost.

[0180] It should be noted that if the driving power demand is less than the engine output power, it means that the engine can provide sufficient engine output power, and there is no need to power the drive motor through the battery to increase the additional output power of the drive motor. At this time, the excess engine output power can be converted into electrical energy to charge the battery, thereby generating engine charging costs. The engine fuel cost is subtracted from the engine charging cost to obtain the driving cost of the target vehicle in parallel mode at the overlapping operating point.

[0181] In one embodiment, when the power state of the battery of the target vehicle is a power consumption state, the remaining output power is calculated based on the driving demand power and the engine output power, and the engine charging cost is calculated based on the remaining output power, the vehicle speed corresponding to the overlapping operating point, the electricity price information and the battery charging efficiency of the target vehicle.

[0182] In one embodiment, if the charge state of the battery of the target vehicle is in the charge retention state, the engine charging cost is calculated according to the driving demand power and the engine output power, the remaining output power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

[0183] S805: If the driving demand power is equal to the engine output power, the engine fuel cost of the target vehicle is calculated, and the fuel power generation cost is used as the driving cost of the target vehicle driving in parallel mode at the overlapping operating point.

[0184] To sum up, in this embodiment, the power state of the target vehicle's battery is divided into a power consumption state and a power retention state, and then the driving cost of the target vehicle driving in parallel mode at overlapping operating points is calculated separately according to the different battery states, so that the calculation of the driving cost is more in line with reality, which is conducive to improving the accuracy of the driving cost calculation.

[0185] S204: Selecting the working mode with the minimum driving cost as the target mode for the overlapping working condition points.

[0186] That is to say, for the same overlapping operating point, while satisfying the wheel torque demand and vehicle speed corresponding to the overlapping operating point, whichever operating mode has the lowest driving cost will be selected as the target mode of the overlapping operating point.

[0187] It should be noted that, in this embodiment, the output power of the battery of the target vehicle when it is in the power consumption state is significantly higher than the output power when it is in the power retention state. Therefore, corresponding operating mode control strategies can be generated for the power consumption state and the power retention state respectively. According to the different power states of the battery, the operating mode of the target vehicle can be controlled according to different operating mode control strategies when the target vehicle is driving.

[0188] In summary, in this embodiment, by selecting the working mode with the lowest driving cost at each operating point, the target vehicle can always drive in the working mode with the lowest cost during the driving process, effectively improving the economy of vehicle driving.

[0189] It should be understood that the order of execution of the steps in the above embodiment does not necessarily 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 embodiment of the present invention.

[0190] like Fig. 9 FIG. 1 is a schematic diagram of the structure of a vehicle working mode control device disclosed in an embodiment of the present invention. The device is applicable to hybrid vehicles. The device in this embodiment may specifically include the following units:

[0191] Information acquisition unit 901, used to acquire real-time oil price information and electricity price information;

[0192] A mode determination unit 902 is used to determine the operating mode with the lowest driving cost of the target vehicle at different operating points according to the oil price information and the electricity price information, as the target mode of the operating point, the operating point being a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle;

[0193] A strategy generating unit 903, used to generate a mode control strategy of a target vehicle according to the target modes corresponding to all operating points;

[0194] The strategy execution unit 904 switches the working mode of the target vehicle to a target mode corresponding to the working point according to the mode control strategy when the target vehicle is at different working points during driving.

[0195] In summary, the present embodiment discloses a vehicle working mode control device, which calculates the working mode with the lowest driving cost at each operating point during the driving process of the target vehicle according to the real-time oil price information and the real-time electricity price information, determines the working mode as the target working mode at the operating point, and generates a mode control strategy for the target vehicle according to the target mode corresponding to each operating point, thereby, when the target vehicle is at different operating points during the driving process, the working mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy. It can be seen that the present invention pre-calculates the target mode with low cost at each operating point of the target vehicle according to the oil price information and the electricity price information, and then switches the working mode of the target vehicle according to the different operating points of the target vehicle during the driving process of the target vehicle, which enriches the purpose of the hybrid vehicle working mode control strategy compared to the prior art.

[0196] In one implementation, the mode determination unit 902 is configured to:

[0197] Obtaining the operating point sets covered by the target vehicle in different operating modes respectively;

[0198] Determine whether there are overlapping operating points between operating points in different operating point sets;

[0199] If there are overlapping operating points, the driving costs of the target vehicle in different operating modes at the overlapping operating points are calculated according to the oil price information and the electricity price information;

[0200] The working mode with the minimum driving cost is selected as the target mode for overlapping operating points.

[0201] In one implementation, the operating mode includes a pure electric mode;

[0202] The driving cost of the target vehicle in pure electric mode at the overlapping operating point is calculated as follows:

[0203] When the power state of the target vehicle's battery is in a power consumption state, the driving cost of the target vehicle in pure electric mode at the overlapping operating point is calculated based on the electricity price information;

[0204] When the battery state of the target vehicle is in the power retention state, the driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated based on the oil price information.

[0205] In one implementation, the mode determination unit 902 is configured to:

[0206] Obtain the vehicle speed and wheel torque corresponding to the overlapping operating point;

[0207] The battery discharge power of the target vehicle is calculated based on the wheel torque and vehicle speed;

[0208] Based on the vehicle speed, electricity price information and battery discharge power, the driving cost of the target vehicle in pure electric mode at the overlapping operating points is calculated.

[0209] In one implementation, the mode determination unit 902 is configured to:

[0210] Obtaining the fuel density of the fuel in the target vehicle, as well as the vehicle speed, wheel torque and first fuel consumption rate corresponding to the overlapping operating point;

[0211] The battery discharge power of the target vehicle is calculated based on the wheel torque and vehicle speed;

[0212] According to the vehicle speed, fuel density, oil price information, battery discharge power and the first fuel consumption rate, the driving cost of the target vehicle in pure electric mode at the overlapping operating point is calculated.

[0213] In one implementation, the operating mode includes a series mode;

[0214] The driving cost of the target vehicle driving in series mode at the overlapping operating point is calculated as follows:

[0215] Obtain the driving demand power and engine output power of the target vehicle at the overlapping operating point;

[0216] Determine whether the driving demand power is greater than the engine output power;

[0217] If the driving demand power is greater than the engine output power, the engine power generation cost and the battery compensation cost are calculated respectively, and the driving cost of the target vehicle driving in series mode at the overlapping operating point is calculated based on the engine power generation cost and the battery replenishment cost;

[0218] If the driving demand power is less than the engine output power, the engine power generation cost and the engine charging cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated based on the engine power generation cost and the engine charging cost;

[0219] If the driving demand power is equal to the engine output power, the engine power generation cost is calculated and used as the driving cost of the target vehicle driving in series mode at the overlapping operating point.

[0220] In one implementation, the operating mode includes a parallel mode;

[0221] The driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated as follows:

[0222] Obtain the driving demand power and engine output power of the target vehicle at the overlapping operating point;

[0223] Determine whether the driving demand power is greater than the engine output power;

[0224] If the driving demand power is greater than the engine output power, the engine fuel cost and battery compensation cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the battery compensation cost;

[0225] If the driving demand power is less than the engine output power, the engine fuel cost and the engine charging cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the engine charging cost;

[0226] If the driving demand power is equal to the engine output power, the engine fuel cost of the target vehicle is calculated, and the fuel power generation cost is used as the driving cost of the target vehicle driving in parallel mode at the overlapping operating point.

[0227] In one implementation, the engine charging cost is calculated as follows:

[0228] The remaining output power is calculated based on the driving demand power and the engine output power;

[0229] When the battery state of the target vehicle is in a power consumption state, the engine charging cost is calculated based on the remaining output power, the vehicle speed corresponding to the overlapping operating point, the electricity price information and the battery charging efficiency of the target vehicle;

[0230] When the battery state of the target vehicle is in the charge retention state, the engine charging cost is calculated based on the remaining output power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point. The first fuel consumption rate is the average fuel consumption rate tested under the WLTC operating condition.

[0231] In one implementation, the battery compensation cost is calculated as follows:

[0232] The battery compensation power is calculated based on the driving demand power and the engine output power;

[0233] When the power state of the target vehicle's battery is a power consumption state, the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, and the oil price information;

[0234] When the charge state of the target vehicle's battery is in the charge retention state, the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

[0235] For the specific definition of the vehicle working mode control device, please refer to the relevant definition of the vehicle working mode control method above, which will not be repeated here. Each module in the above-mentioned vehicle working mode control device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0236] In one implementation, the present application embodiment discloses a controller, whose internal structure diagram can be as follows: Fig.10 As shown. The controller includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the controller is used to provide computing and control capabilities. The memory of the controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the controller is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a vehicle operating mode control method is implemented.

[0237] In one embodiment, a controller is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0238] Get real-time oil and electricity price information;

[0239] According to the oil price information and the electricity price information, the working mode with the lowest driving cost of the target vehicle at different operating points is determined as the target mode of the operating point, and the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle;

[0240] Generate a mode control strategy for the target vehicle according to the target modes corresponding to all operating points;

[0241] When the target vehicle is at different operating points during driving, the operating mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy.

[0242] In one embodiment, a vehicle is disclosed in this embodiment, and the vehicle includes the controller disclosed in the above embodiment.

[0243] In one embodiment, the present application discloses a computer-readable storage medium. When the instructions in the computer-readable storage medium are executed by a processor in a computer device, the computer device can perform the steps of any embodiment of a vehicle operating mode control method disclosed in the present invention. The computer-readable storage medium can be non-volatile or volatile.

[0244] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0245] Get real-time oil and electricity price information;

[0246] According to the oil price information and the electricity price information, the working mode with the lowest driving cost of the target vehicle at different operating points is determined as the target mode of the operating point, and the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle;

[0247] Generate a mode control strategy for the target vehicle according to the target modes corresponding to all operating points;

[0248] When the target vehicle is at different operating points during driving, the operating mode of the target vehicle is switched to the target mode corresponding to the operating point according to the mode control strategy.

[0249] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0250] 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 distributed and completed by 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.

[0251] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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 invention, and should all be included in the protection scope of the present invention.

Claims

1. A vehicle operating mode control method, characterized in that: include: Get real-time oil and electricity price information; According to the oil price information and the electricity price information, respectively calculating the driving costs of the target vehicle in different working modes at different operating points, and selecting the working mode with the lowest driving cost as the target mode of the operating point, wherein the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle; Generating a mode control strategy for the target vehicle according to the target modes corresponding to all the operating points; When the target vehicle is at different operating points during driving, switching the operating mode of the target vehicle to a target mode corresponding to the operating point according to the mode control strategy; The step of calculating the driving costs of the target vehicle in different operating modes at different operating points according to the oil price information and the electricity price information, and selecting the operating mode with the lowest driving cost as the target mode at the operating point includes: Respectively obtaining a set of operating points covered by the target vehicle under different operating modes; Determining whether there are overlapping operating points between the operating points in different operating point sets; If the overlapping operating point exists, respectively calculating the driving cost of the target vehicle driving in different operating modes at the overlapping operating point according to the oil price information and the electricity price information; The operating mode with the smallest driving cost is selected as the target mode of the overlapping operating point.

2. The vehicle operation mode control method according to claim 1, characterized in that: The working mode includes a pure electric mode; The driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated as follows: When the power state of the battery of the target vehicle is a power consumption state, the driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated based on the electricity price information; When the power state of the battery of the target vehicle is in the power retention state, the driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated based on the oil price information.

3. The vehicle operation mode control method according to claim 2, characterized in that: When the power state of the battery of the target vehicle is the power consumption state, the driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated based on the electricity price information, including: Obtaining the vehicle speed and the wheel torque corresponding to the overlapping operating point; Calculating the battery discharge power of the target vehicle according to the wheel torque and the vehicle speed; The driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated according to the vehicle speed, the electricity price information and the battery discharge power.

4. The vehicle operation mode control method according to claim 2, characterized in that: When the power state of the battery of the target vehicle is in the power retention state, the driving cost of the target vehicle driving in the pure electric mode at the overlapping operating point is calculated based on the oil price information, including: Obtaining the fuel density of the fuel in the target vehicle, and the vehicle speed, the wheel torque and the first fuel consumption rate corresponding to the overlapping operating point; Calculating the battery discharge power of the target vehicle according to the wheel torque and the vehicle speed; The driving cost of the target vehicle in the pure electric mode at the overlapping operating point is calculated based on the vehicle speed, the fuel density, the oil price information, the battery discharge power and the first fuel consumption rate.

5. The vehicle operation mode control method according to claim 1, characterized in that: The working mode includes a series mode; The driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated as follows: Obtaining the driving demand power and engine output power of the target vehicle at the overlapping operating point; determining whether the driving demand power is greater than the engine output power; If the driving demand power is greater than the engine output power, the engine power generation cost and the battery compensation cost are calculated respectively, and the driving cost of the target vehicle driving in the series mode at the overlapping operating point is calculated based on the engine power generation cost and the battery replenishment cost; If the driving demand power is less than the engine output power, respectively calculating the engine power generation cost and the engine charging cost of the target vehicle, and calculating the driving cost of the target vehicle driving in the series mode at the overlapping operating point based on the engine power generation cost and the engine charging cost; If the required driving power is equal to the engine output power, the engine power generation cost is calculated and used as the driving cost of the target vehicle driving in the series mode at the overlapping operating point.

6. The vehicle operation mode control method according to claim 1, characterized in that: The working mode includes a parallel mode; The driving cost of the target vehicle driving in the parallel mode at the overlapping operating point is calculated as follows: Obtaining the driving demand power and engine output power of the target vehicle at the overlapping operating point; determining whether the driving demand power is greater than the engine output power; If the driving demand power is greater than the engine output power, the engine fuel cost and the battery compensation cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in the parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the battery compensation cost; If the driving demand power is less than the engine output power, the engine fuel cost and the engine charging cost of the target vehicle are calculated respectively, and the driving cost of the target vehicle driving in the parallel mode at the overlapping operating point is calculated based on the engine fuel cost and the engine charging cost; If the driving demand power is equal to the engine output power, the engine fuel cost of the target vehicle is calculated, and the fuel power generation cost is used as the driving cost of the target vehicle driving in the parallel mode at the overlapping operating point.

7. The vehicle operating mode control method according to any one of claims 5 or 6, characterized in that: The engine charging cost is calculated as follows: Calculating the remaining output power according to the driving demand power and the engine output power; When the power state of the battery of the target vehicle is a power consumption state, the engine charging cost is calculated according to the remaining output power, the vehicle speed corresponding to the overlapping operating point, the electricity price information and the battery charging efficiency of the target vehicle; When the power state of the battery of the target vehicle is in the power retention state, the engine charging cost is calculated according to the remaining output power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point, and the first fuel consumption rate is the average fuel consumption rate tested under the WLTC operating condition.

8. The vehicle operation mode control method according to any one of claims 5 or 6, characterized in that: The battery compensation cost is calculated as follows: Calculating battery compensation power according to the driving demand power and the engine output power; When the power state of the battery of the target vehicle is a power consumption state, the battery compensation cost is calculated according to the battery compensation power, the vehicle speed corresponding to the overlapping operating point, and the oil price information; When the power state of the battery of the target vehicle is in the power retention state, the battery compensation cost is calculated based on the battery compensation power, the vehicle speed corresponding to the overlapping operating point, the oil price information, the fuel density of the fuel in the target vehicle and the first fuel consumption rate corresponding to the overlapping operating point.

9. A vehicle operating mode control device, characterized in that: include: An information acquisition unit, used to acquire real-time oil price information and electricity price information; A mode determination unit, for calculating the driving costs of the target vehicle in different working modes at different operating points according to the oil price information and the electricity price information, and selecting the working mode with the lowest driving cost as the target mode of the operating point, wherein the operating point is a point corresponding to a preset vehicle speed within a speed range and a preset wheel torque within a torque range of the target vehicle; A strategy generating unit, configured to generate a mode control strategy of the target vehicle according to the target modes corresponding to all the operating points; a strategy execution unit, which switches the working mode of the target vehicle to a target mode corresponding to the working point according to the mode control strategy when the target vehicle is at different working points during driving; Wherein, the mode determination unit is used for: Respectively obtaining a set of operating points covered by the target vehicle under different operating modes; Determining whether there are overlapping operating points between the operating points in different operating point sets; If the overlapping operating point exists, respectively calculating the driving cost of the target vehicle driving in different operating modes at the overlapping operating point according to the oil price information and the electricity price information; The operating mode with the smallest driving cost is selected as the target mode of the overlapping operating point.

10. A controller comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the controller executes the computer program, the vehicle operating mode control method as described in any one of claims 1 to 8 is implemented.

11. A vehicle, characterized in that: The vehicle includes the controller according to claim 10.

12. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the vehicle operating mode control method according to any one of claims 1 to 8 is implemented.

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