Hybrid vehicle drive method, apparatus, device, medium, and product

Abstract

The application relates to a hybrid vehicle driving method, device, equipment, medium and product. The method comprises the following steps: firstly, according to an accelerator pedal opening degree signal, a hybrid vehicle is controlled to enter a pure electric mode; then, according to an engine historical average fuel consumption rate, a pure electric equivalent fuel consumption rate is determined; then, according to a generator power generation amount and a demand power amount, a series equivalent fuel consumption rate is determined; then, according to the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate, the hybrid vehicle is controlled to enter a series mode; then, according to an engine direct drive energy and a vehicle driving demand energy, a parallel equivalent fuel consumption rate is determined; and finally, according to the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, a current vehicle speed and a target vehicle speed, the hybrid vehicle is controlled to enter a parallel mode. According to the pure electric equivalent fuel consumption rate, the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate, the method can accurately realize switching between different driving modes of the hybrid vehicle.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle technology, and in particular to a hybrid vehicle driving method, apparatus, computer equipment, storage medium and computer program product. Background Technology

[0002] Because non-external charging hybrid electric vehicles (NEHEVs) have a relatively lower cost increase compared to pure gasoline vehicles and do not require charging stations or other infrastructure, they offer better fuel economy than gasoline vehicles and are widely favored by automakers and consumers.

[0003] Currently, the mainstream hybrid solution for non-external charging hybrid electric vehicles is to use a dual-motor series-parallel hybrid system. This system can achieve pure electric, series, and parallel drive, taking into account both economy and power at low and high speeds. The switching between the three drive modes is mainly based on the engineers' engineering experience, which is accomplished by looking up a large number of fixed threshold values, one-dimensional tables, and two-dimensional tables. However, due to the multiple modes and high control difficulty of the dual-motor series-parallel hybrid system, it is difficult to achieve precise switching between various modes using this drive mode switching method. Summary of the Invention

[0004] Therefore, it is necessary to provide a hybrid vehicle driving method, device, computer equipment, computer-readable storage medium, and computer program product that can accurately switch the driving mode of a hybrid vehicle in response to the above-mentioned technical problems.

[0005] In a first aspect, this application provides a hybrid vehicle driving method, the method comprising:

[0006] The accelerator pedal opening signal is acquired, and the hybrid vehicle is controlled to enter pure electric mode based on the accelerator pedal opening signal.

[0007] Obtain the engine's historical average fuel consumption rate, and determine the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate;

[0008] The generator output power and the drive motor demand power are obtained, and the series equivalent fuel consumption rate is determined based on the generator output power and the demand power.

[0009] Based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate, the hybrid electric vehicle is controlled to enter series mode;

[0010] Obtain the engine direct drive energy and the vehicle driving energy demand, and determine the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle driving energy demand;

[0011] Based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, the hybrid vehicle is controlled to enter parallel mode.

[0012] In one embodiment, determining the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate includes:

[0013] The historical operating efficiency data of vehicle components is obtained, and the basic power generation equivalent fuel consumption rate is determined based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate. The historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery.

[0014] Historical regenerative braking energy and historical vehicle driving energy are obtained, and the equivalent fuel consumption rate for compensated power generation is determined based on the historical regenerative braking energy and the historical vehicle driving energy.

[0015] The current operating efficiency data of the vehicle components is obtained, and the pure electric equivalent fuel consumption rate is determined based on the current operating efficiency data of the vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and the first battery power consumption compensation factor. The current operating efficiency data of the vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller.

[0016] In one embodiment, determining the series equivalent fuel consumption rate based on the generator's output power and the demand power includes:

[0017] Compare the amount of electricity generated by the generator with the amount of electricity demanded;

[0018] If the generator output is equal to the demand, then the current equivalent fuel consumption rate is determined based on the current fuel consumption rate of the engine, the current efficiency of the generator, and the current efficiency of the generator controller, and the series equivalent fuel consumption rate is determined based on the current equivalent fuel consumption rate.

[0019] If the generator output is less than the required output, the series equivalent fuel consumption rate is determined based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and the first battery power consumption compensation factor.

[0020] If the generator output is greater than the required output, the series equivalent fuel consumption rate is determined based on the current equivalent fuel consumption rate, the current fuel consumption rate of the engine, the current efficiency of the generator, the current efficiency of the generator controller, the current charging efficiency of the battery, and the second battery power consumption compensation factor.

[0021] In one embodiment, determining the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle's driving energy demand includes:

[0022] Compare the magnitude of the engine's direct-drive energy with the energy required for vehicle operation;

[0023] If the direct drive energy of the engine is equal to the energy required for vehicle operation, then the current fuel consumption rate of the engine is determined as the parallel equivalent fuel consumption rate.

[0024] If the direct drive energy of the engine is less than the energy required for vehicle operation, the parallel equivalent fuel consumption rate is determined based on the current fuel consumption rate of the engine, the pure electric equivalent fuel consumption rate, and the first battery power consumption compensation factor.

[0025] If the direct drive energy of the engine is greater than the energy required for vehicle operation, the parallel equivalent fuel consumption rate is determined based on the current fuel consumption rate of the engine, the current efficiency of the generator, the current efficiency of the generator controller, the current charging efficiency of the battery, and the second battery power consumption compensation factor.

[0026] In one embodiment, controlling the hybrid vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed includes:

[0027] Compare the magnitudes of the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate;

[0028] If the series equivalent fuel consumption rate is greater than the parallel equivalent fuel consumption rate, then compare the current vehicle speed with the target vehicle speed.

[0029] If the current vehicle speed is greater than the target vehicle speed, the hybrid vehicle is controlled to enter parallel mode.

[0030] In one embodiment, the method further includes:

[0031] Obtain the current state of charge of the power battery and compare the current state of charge with the preset state of charge;

[0032] If the current state of charge is greater than the preset state of charge, then a first battery power consumption compensation factor is determined according to the first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor;

[0033] If the current state of charge is less than the preset state of charge, then a second battery power consumption compensation factor is determined according to the second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

[0034] Secondly, this application also provides a hybrid vehicle drive system, the system comprising:

[0035] The first acquisition module is used to acquire the accelerator pedal opening signal and control the hybrid vehicle to enter pure electric mode according to the accelerator pedal opening signal.

[0036] The second acquisition module is used to acquire the historical average fuel consumption rate of the engine and determine the pure electric equivalent fuel consumption rate based on the historical average fuel consumption rate of the engine.

[0037] The third acquisition module is used to acquire the generator's power output and the drive motor's power demand, and to determine the series equivalent fuel consumption rate based on the generator's power output and the power demand.

[0038] The first control module is used to control the hybrid vehicle to enter the series mode based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate.

[0039] The fourth acquisition module is used to acquire the engine direct drive energy and the vehicle driving energy demand, and determine the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle driving energy demand.

[0040] The second control module is used to control the hybrid vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed.

[0041] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the methods in any of the above embodiments.

[0042] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the methods in any of the above embodiments.

[0043] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps of the methods in any of the above embodiments.

[0044] The aforementioned hybrid electric vehicle driving method, device, computer equipment, storage medium, and computer program product first acquire the accelerator pedal opening signal and, based on the accelerator pedal opening signal, control the hybrid electric vehicle to enter pure electric mode. Then, it acquires the engine's historical average fuel consumption rate and, based on the engine's historical average fuel consumption rate, determines the pure electric equivalent fuel consumption rate. Next, it acquires the generator's generated electricity and the drive motor's required electricity and, based on the generator's generated electricity and required electricity, determines the series equivalent fuel consumption rate. Then, based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate, it controls the hybrid electric vehicle to enter series mode. Next, it acquires the engine's direct drive energy and the vehicle's driving energy requirements and, based on the engine's direct drive energy and the vehicle's driving energy requirements, determines the parallel equivalent fuel consumption rate. Finally, based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, it controls the hybrid electric vehicle to enter parallel mode. The method provided in this application can accurately realize the switching between different driving modes of a hybrid electric vehicle based on the pure electric equivalent fuel consumption rate, the series equivalent fuel consumption rate, and the parallel equivalent fuel consumption rate. Attached Figure Description

[0045] Figure 1 This is a diagram illustrating the application environment of a hybrid vehicle drive method in one embodiment.

[0046] Figure 2 This is a flowchart illustrating a hybrid electric vehicle driving method in one embodiment.

[0047] Figure 3 This is a flowchart illustrating a method for determining the pure electric equivalent fuel consumption rate in one embodiment;

[0048] Figure 4 This is a flowchart of a hybrid vehicle driving method in another embodiment;

[0049] Figure 5 This is a structural block diagram of a hybrid vehicle drive unit in one embodiment;

[0050] Figure 6 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0052] The hybrid vehicle driving method provided in this application embodiment can be applied to, for example... Figure 1The application environment shown above includes a drive transmission 102, a hybrid system vehicle controller 104, and a power storage device 106. The drive transmission 102 includes an engine, a generator, a drive motor, a hybrid-specific gearbox, and a reduction differential. The power storage device 106 includes a power battery and a fuel tank. Specifically, the hybrid system vehicle controller 104 controls the drive transmission 102 to drive the vehicle and provides the energy required for vehicle operation through the power storage device 106.

[0053] In one embodiment, such as Figure 2 As shown, a hybrid vehicle driving method is provided, which is applied to... Figure 1 Taking the hybrid power system vehicle controller as an example, the explanation includes the following steps:

[0054] S202: Obtain the accelerator pedal opening signal, and control the hybrid vehicle to enter pure electric mode according to the accelerator pedal opening signal.

[0055] The accelerator pedal opening signal is generated when the driver presses the accelerator pedal. Pure electric mode refers to the vehicle being driven entirely by the power battery.

[0056] Specifically, after the vehicle is successfully powered on, the vehicle controller determines whether the driver has pressed the accelerator pedal by using the accelerator pedal opening signal. If it is confirmed that the driver has pressed the accelerator pedal, the vehicle is controlled to enter pure electric mode.

[0057] S204. Obtain the historical average fuel consumption rate of the engine, and determine the pure electric equivalent fuel consumption rate based on the historical average fuel consumption rate of the engine.

[0058] The pure electric equivalent fuel consumption rate refers to the equivalent fuel consumption rate of a vehicle when it is in pure electric mode. It is calculated from the engine's historical average fuel consumption rate, the historical operating efficiency of vehicle components, the historical regenerative braking energy of the power battery, the current operating efficiency of vehicle components, and the battery power consumption compensation factor. The battery power consumption compensation factor characterizes the state of charge (SOC) of the power battery, i.e., the amount of remaining charge. The higher the SOC, the lower the battery power consumption compensation factor. The SOC of the battery is typically maintained at 50%-60%, ensuring sufficient discharge and charging capacity for the battery.

[0059] Since the electric power source of a hybrid system is the engine, not an external charging station, the vehicle's equivalent fuel consumption rate can still be calculated when the vehicle is in pure electric mode.

[0060] S206. Obtain the generator output power and the drive motor demand power, and determine the series equivalent fuel consumption rate based on the generator output power and the demand power.

[0061] The series equivalent fuel consumption rate refers to the equivalent fuel consumption rate of a vehicle when it is in series mode.

[0062] The vehicle controller determines which method to use to calculate the series equivalent fuel consumption rate by comparing the generator's output with the drive motor's demand. When the generator's output equals the demand, the vehicle controller determines the current equivalent fuel consumption rate based on the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, the drive motor's current efficiency, and the drive motor controller's current efficiency, and designates this current equivalent fuel consumption rate as the series equivalent fuel consumption rate. When the generator's output is less than the demand, the vehicle controller determines the series equivalent fuel consumption rate based on the pure electric equivalent fuel consumption rate and the current equivalent fuel consumption rate. When the generator's output exceeds the demand, some of the generated electricity is used to charge the battery. In this case, the loss of electricity charged into the battery during charging and discharging should be considered. Therefore, the vehicle controller determines the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate, the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, and the battery's current charging efficiency.

[0063] S208. Based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate, control the hybrid vehicle to enter the series mode.

[0064] Series mode is the driving mode of a vehicle when the engine and generator are connected in series. When the vehicle is in series mode, the connection between the engine and generator is electrical, and there is no mechanical connection between them.

[0065] Specifically, the vehicle controller compares the pure electric equivalent fuel consumption rate with the series equivalent fuel consumption rate. When the series equivalent fuel consumption rate is less than the pure electric equivalent fuel consumption rate, the vehicle is controlled to enter the series mode.

[0066] S210: Obtain the engine direct drive energy and the vehicle driving energy demand, and determine the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle driving energy demand.

[0067] Engine direct drive energy refers to the energy that the engine provides directly for vehicle operation by consuming fuel, while parallel equivalent fuel consumption rate refers to the equivalent fuel consumption rate of the vehicle when it is in parallel mode.

[0068] Specifically, the vehicle controller determines which method to use to calculate the parallel equivalent fuel consumption rate by comparing the engine's direct drive energy with the vehicle's driving energy requirements. If the engine's direct drive energy equals the vehicle's driving energy requirements, the current engine fuel consumption rate is determined as the parallel equivalent fuel consumption rate. If the engine's direct drive energy is less than the vehicle's driving energy requirements, the parallel equivalent fuel consumption rate is determined based on the engine's current fuel consumption rate and the pure electric equivalent fuel consumption rate. If the engine's direct drive energy is greater than the vehicle's driving energy requirements, the generator participates in generating electricity, and the generated electricity charges the battery. The losses incurred during the charging and discharging of the battery should be considered. Therefore, the parallel equivalent fuel consumption rate is determined based on the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, and the battery's current charging efficiency.

[0069] S212. Based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, control the hybrid vehicle to enter the parallel mode.

[0070] Parallel mode is the driving mode of a vehicle when the engine and generator are connected in parallel. In parallel mode, the power from the engine and generator is mechanically connected. Under specific operating conditions, the required torque of the vehicle is fixed in parallel mode, but the torque from the engine and generator can be freely distributed, as long as their sum equals the required torque.

[0071] Specifically, the vehicle controller first compares the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate. When the parallel equivalent fuel consumption rate is less than the series equivalent fuel consumption rate, it then compares the current vehicle speed and the target vehicle speed. Only when the current vehicle speed is greater than the target vehicle speed will the vehicle controller control the vehicle to enter parallel mode.

[0072] In the aforementioned hybrid electric vehicle driving method, firstly, the accelerator pedal opening signal is acquired, and based on the accelerator pedal opening signal, the hybrid electric vehicle is controlled to enter pure electric mode. Then, the historical average fuel consumption rate of the engine is acquired, and based on the historical average fuel consumption rate of the engine, the pure electric equivalent fuel consumption rate is determined. Next, the generator's generated electricity and the drive motor's required electricity are acquired, and based on the generator's generated electricity and the required electricity, the series equivalent fuel consumption rate is determined. Then, based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate, the hybrid electric vehicle is controlled to enter series mode. Next, the engine's direct drive energy and the vehicle's driving energy requirements are acquired, and based on the engine's direct drive energy and the vehicle's driving energy requirements, the parallel equivalent fuel consumption rate is determined. Finally, based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, the hybrid electric vehicle is controlled to enter parallel mode. The method provided in this application can accurately realize the switching between different driving modes of hybrid electric vehicles based on the pure electric equivalent fuel consumption rate, the series equivalent fuel consumption rate, and the parallel equivalent fuel consumption rate.

[0073] In some embodiments, such as Figure 3As shown, Figure 3 This is a flowchart illustrating a method for determining the pure electric equivalent fuel consumption rate in one embodiment. The method, based on the engine's historical average fuel consumption rate, determines the pure electric equivalent fuel consumption rate by: acquiring historical operating efficiency data of vehicle components and determining the basic power generation equivalent fuel consumption rate based on the historical operating efficiency data and the historical average fuel consumption rate. The historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery; acquiring historical regenerative braking energy and historical vehicle driving energy and determining the compensated power generation equivalent fuel consumption rate based on the historical regenerative braking energy and historical vehicle driving energy; and acquiring current operating efficiency data of vehicle components and determining the pure electric equivalent fuel consumption rate based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and the first battery power consumption compensation factor. The current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller.

[0074] In this step, since part of the battery's energy comes from regenerative braking, it is necessary to calculate the proportion of historical regenerative braking energy in the historical vehicle driving energy. This ratio is used to calculate the compensation for the base equivalent fuel consumption rate of electricity generation, thereby calculating the pure electric equivalent fuel consumption rate. Therefore, the calculation method for the pure electric equivalent fuel consumption rate is shown in the following formula:

[0075] BSFC EV =BSFC Eng_h / (η EM1_h *η Inv1_h ) / η BatChr_h *

[0076] (1-E Rgn / E Drv ) / η BatDisc / (η EM2 *η Inv2 )*σ SOC-

[0077] In the formula, BSFC EV For pure electric equivalent fuel consumption rate, BSFC Eng_h η represents the engine's historical average fuel consumption rate. EM1_h η is the historical average efficiency of the generator. Inv1_h η is the historical average efficiency of the generator controller. BatChr_h For battery historical charging efficiency, E Rgn E recovers energy for historical braking. Dr For historical vehicle driving energy, η BatDisc For the current battery discharge efficiency, η EM2 η is the instantaneous efficiency of the drive motor. Inv2 To determine the instantaneous efficiency of the drive motor controller, σSOC- Let σ be the power consumption compensation factor for the first battery, where σ is the power consumption compensation factor for the first battery. SOC- Less than 1.

[0078] The method provided in this step determines the pure electric equivalent fuel consumption rate based on historical and current operating efficiency data of vehicle components, which can improve the accuracy of the determination of the pure electric equivalent fuel consumption rate.

[0079] In some embodiments, determining the series equivalent fuel consumption rate based on the generator's generated power and the demanded power includes: comparing the generator's generated power and the demanded power; if the generator's generated power equals the demanded power, then determining the current equivalent fuel consumption rate based on the engine's current fuel consumption rate, the generator's current efficiency, and the generator controller's current efficiency, and determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate; if the generator's generated power is less than the demanded power, then determining the series equivalent fuel consumption rate based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the generator's generated power is greater than the demanded power, then determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate, the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, the battery's current charging efficiency, and a second battery power consumption compensation factor.

[0080] In this step, when the generator's output equals the drive motor's demand, the generator's output is entirely used to power the vehicle. This situation does not affect the battery's state of charge; therefore, the battery power consumption compensation factor is 1. At this point, the formula for calculating the series equivalent fuel consumption rate is:

[0081] BSFC RE =BSFC Eng / (η EM1 *η Inv1 ) / (η EM2 *η Inv2 )

[0082] In the formula, BSFC R For series equivalent fuel consumption rate, BSFC Eng η represents the current fuel consumption rate of the engine. EM1 η is the current efficiency of the generator. Inv1 This represents the current efficiency of the generator controller.

[0083] When the generator output is less than the drive motor's required output, the drive motor needs to use the power battery's stored energy to power the vehicle. In this case, the battery power consumption compensation factor is less than 1, and the formula for calculating the series equivalent fuel consumption rate is:

[0084] BSFC RE =(BSFC) Eng / (η EM1 *ηInv1 ) / (η EM2 *η Inv2 )*φ1+BSFC Eng_h / (η EM1_h *η Inv1_h )*

[0085] (1-E Rgn / E Drv ) / η BatChr_h / (η EM2 *η Inv2 ) / η BatDisc (1-φ1))*σ SOC-

[0086] In the formula, φ1 is the weight value of the current equivalent fuel consumption rate.

[0087] When the generator output exceeds the drive motor's power demand, a portion of the generator output will be used to charge the power battery. In this case, the battery power consumption compensation factor is greater than 1, and the formula for calculating the series equivalent fuel consumption rate is:

[0088] BSFC RE =(BSFC) Eng / (η EM1 *η Inv1 ) / (η EM2 *η Inv2 )*φ1+BSFC Eng / (η EM1 *η Inv1 ) / η BatChr *

[0089] (1-φ1))σ SOC+

[0090] In the formula, η BatChr σ represents the current charging efficiency of the battery. SOC+ This is the power consumption compensation factor for the second battery.

[0091] After calculating the series equivalent fuel consumption rate for the three cases, these three series equivalent fuel consumption rates are compared with the pure electric equivalent fuel consumption rate to determine the minimum equivalent fuel consumption rate among the four, and the vehicle is driven according to the driving mode corresponding to this minimum equivalent fuel consumption rate.

[0092] The method provided in this step determines the series equivalent fuel consumption rate based on the difference between the generator's output power and the drive motor's power demand, making the determined series equivalent fuel consumption rate more consistent with actual operating conditions.

[0093] In some embodiments, determining the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle's driving energy demand includes: comparing the magnitude of the engine direct drive energy and the vehicle's driving energy demand; if the engine direct drive energy equals the vehicle's driving energy demand, then determining the current engine fuel consumption rate as the parallel equivalent fuel consumption rate; if the engine direct drive energy is less than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the pure electric equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the engine direct drive energy is greater than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the current generator efficiency, the current generator controller efficiency, the current battery charging efficiency, and a second battery power consumption compensation factor.

[0094] In this step, when the engine direct drive energy equals the energy required for vehicle operation, the engine direct drive energy is just enough to meet the vehicle's driving requirements. The parallel equivalent fuel consumption rate is the current fuel consumption rate of the engine. Furthermore, engine direct drive does not affect the state of charge of the power battery, and the battery power consumption compensation factor is 1. Therefore, the formula for calculating the parallel equivalent fuel consumption rate is as follows:

[0095] SFC Prl =BSFC Eng

[0096] In the formula, SFC Prl This is the parallel equivalent fuel consumption rate.

[0097] When the direct-drive energy of the engine is less than the energy required for vehicle operation, the direct-drive energy of the engine cannot meet the requirements for vehicle operation, and the power battery needs to provide a portion of the energy required for vehicle operation. At this time, the battery power consumption compensation factor is less than 1, and the calculation formula for the parallel equivalent fuel consumption rate is as follows:

[0098] BSFC Prl =(BSFC) Eng *φ2+BSFC Eng_h / (η EM1_h *η Inv1_h )*(1-E Rgn / E Drv ) / η BatChr_h / (η EM2 *η Inv2 )

[0099] / η BatDisc (1-φ2))*σ SOC-

[0100] In the formula, φ2 is the weight value of the engine's current fuel consumption rate.

[0101] When the engine's direct-drive energy exceeds the vehicle's driving energy requirements, some of the generated electricity will be used to charge the battery. In this case, the battery power consumption compensation factor is greater than 1. The formula for calculating the parallel equivalent fuel consumption rate is as follows:

[0102] BSFC Prl =(BSFC) Eng *φ2+BSFC Eng / (η EM1 *η Inv1 ) / η BatChr *(1-φ2))*σ SOC+

[0103] The method provided in this step determines the parallel equivalent fuel consumption rate based on the engine's direct drive energy and the vehicle's driving energy requirements, making the determined parallel equivalent fuel consumption rate more consistent with actual operating conditions.

[0104] In some embodiments, controlling a hybrid electric vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed includes: comparing the magnitudes of the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate; if the series equivalent fuel consumption rate is greater than the parallel equivalent fuel consumption rate, then comparing the magnitudes of the current vehicle speed and the target vehicle speed; and if the current vehicle speed is greater than the target vehicle speed, controlling the hybrid electric vehicle to enter parallel mode.

[0105] In this step, after calculating the parallel equivalent fuel consumption rate for the three cases, these three parallel equivalent fuel consumption rates are compared with the series equivalent fuel consumption rate to determine the minimum equivalent fuel consumption rate among the four. The vehicle is then driven according to the driving mode corresponding to this minimum equivalent fuel consumption rate. If this minimum equivalent fuel consumption rate is any one of the three parallel equivalent fuel consumption rates, the current vehicle speed and the target vehicle speed are compared. If the current vehicle speed is greater than the target vehicle speed, the hybrid vehicle is controlled to enter the parallel mode.

[0106] The method provided in this step, after comparing the equivalent fuel consumption rate, also compares whether the vehicle speed reaches the preset speed, which can ensure the safety of the vehicle drive mode switching process.

[0107] In some embodiments, the method further includes: obtaining the current state of charge of the power battery and comparing the current state of charge with a preset state of charge; if the current state of charge is greater than the preset state of charge, determining a first battery power consumption compensation factor according to a first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor; if the current state of charge is less than the preset state of charge, determining a second battery power consumption compensation factor according to a second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

[0108] In this step, if the state of charge (SOC) of the power battery is higher than the preset SOC, it indicates that the battery has sufficient charge. In this case, the equivalent fuel consumption rate of the power-consuming driving modes needs to be reduced, making it easier for the vehicle to enter these modes and thus consume battery power. Therefore, the first battery power consumption compensation factor should be less than 1. Similarly, if the SOC of the power battery is lower than the preset SOC, it indicates that the battery has insufficient charge. In this case, the equivalent fuel consumption rate of the power-consuming driving modes needs to be increased, making it less likely for the vehicle to enter these modes and thus not consume battery power. Therefore, the first battery power consumption compensation factor should be greater than 1.

[0109] The method provided in this step flexibly adjusts the equivalent fuel consumption rate according to the battery's state of charge, which makes the determined driving mode more reasonable and ensures the safety of the power battery.

[0110] In one embodiment, such as Figure 4 As shown, Figure 4 A flowchart of another hybrid vehicle drive method, which includes the following:

[0111] When the vehicle starts moving, the non-externally charged hybrid system defaults to pure electric mode. Since the primary energy source for the non-externally charged hybrid system is the engine, not an external charger, its equivalent fuel consumption can still be calculated in pure electric mode. This is achieved by dividing the engine's historical average fuel consumption rate by the generator's historical average efficiency and the generator controller's historical average efficiency, resulting in the basic equivalent fuel consumption rate for power generation. Because some of the battery's charge comes from regenerative braking, the ratio of historically recovered energy to actual driving energy is calculated as a compensation for the basic equivalent fuel consumption rate for power generation, ultimately yielding the equivalent fuel consumption rate for pure electric mode.

[0112] In series mode, the engine drives the generator to produce electricity, which may be entirely or partially supplied to the drive motor to propel the vehicle, or the battery may simultaneously provide electrical assistance. In this mode, the equivalent fuel consumption rate is obtained by dividing the current engine fuel consumption rate by the current generator efficiency and the generator controller efficiency. If battery assistance is provided, the drive motor energy is divided into two parts: one part uses the historical equivalent fuel consumption rate for pure electric power, and the other part uses the current equivalent fuel consumption rate for power generation. These are then divided by the current drive motor efficiency and the drive motor controller efficiency to obtain the equivalent fuel consumption rate for series mode. If the power generation exceeds the power consumption, and some of the electricity is used to charge the battery, the losses incurred during charging and discharging should be considered, and calculations should be performed using the current battery charging efficiency and historical discharging efficiency.

[0113] In parallel operation, under specific operating conditions, the required torque is fixed, but the torque of the engine and motor can be freely distributed; the sum of the two only needs to equal the required torque. The equivalent fuel consumption rate for direct engine drive is the simplest, being the engine's current fuel consumption rate. If the generator assists, the equivalent fuel consumption rate calculation for the assist portion is the same as in pure electric mode. If the generator generates electricity and charges the battery, the losses incurred during charging and discharging should be considered.

[0114] Non-externally rechargeable hybrid vehicles typically have a lower total battery capacity, making it impossible to operate at high power for extended periods. Therefore, the control method should maintain the battery's State of Charge (SOC) within a reasonable range. Based on the SOC value and the target SOC value, power consumption equivalent fuel consumption rate compensation factors and charging equivalent fuel consumption rate compensation factors are set. Specifically, when the battery SOC is lower than the target SOC value, the power consumption compensation factors for pure electric mode, series assist mode, and parallel assist mode are high, resulting in a high calculated equivalent fuel consumption rate, making it less likely to enter these modes and preventing further depletion of battery capacity. Conversely, when the battery SOC is higher than the target SOC value, the power consumption compensation factors for pure electric mode, series assist mode, and parallel assist mode are low, resulting in a low calculated equivalent fuel consumption rate, making it more likely to enter these modes and thus consume more battery power.

[0115] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0116] Based on the same inventive concept, this application also provides a hybrid vehicle drive device for implementing the hybrid vehicle drive method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the hybrid vehicle drive device provided below can be found in the limitations of the hybrid vehicle drive method described above, and will not be repeated here.

[0117] In one embodiment, such as Figure 5As shown, a hybrid electric vehicle drive device 500 is provided, including: a first acquisition module 501, a second acquisition module 502, a third acquisition module 503, a first control module 504, a fourth acquisition module 505, and a second control module 506, wherein:

[0118] The first acquisition module 501 is used to acquire the accelerator pedal opening signal and control the hybrid vehicle to enter pure electric mode according to the accelerator pedal opening signal.

[0119] The second acquisition module 502 is used to acquire the historical average fuel consumption rate of the engine and determine the pure electric equivalent fuel consumption rate based on the historical average fuel consumption rate of the engine.

[0120] The third acquisition module 503 is used to acquire the generator's power output and the drive motor's power demand, and to determine the series equivalent fuel consumption rate based on the generator's power output and the power demand.

[0121] The first control module 504 is used to control the hybrid vehicle to enter the series mode based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate.

[0122] The fourth acquisition module 505 is used to acquire the engine direct drive energy and the vehicle driving energy demand, and determine the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle driving energy demand.

[0123] The second control module 506 is used to control the hybrid vehicle to enter the parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed.

[0124] In some embodiments, the second acquisition module 502 is further configured to: acquire historical operating efficiency data of vehicle components, and determine a basic power generation equivalent fuel consumption rate based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate, wherein the historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery; acquire historical regenerative braking energy and historical vehicle driving energy, and determine a compensated power generation equivalent fuel consumption rate based on the historical regenerative braking energy and the historical vehicle driving energy; acquire current operating efficiency data of vehicle components, and determine a pure electric equivalent fuel consumption rate based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and the first battery power consumption compensation factor, wherein the current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller.

[0125] In some embodiments, the third acquisition module 503 is further configured to: compare the amount of electricity generated by the generator with the amount of electricity demanded; if the amount of electricity generated by the generator is equal to the amount of electricity demanded, determine the current equivalent fuel consumption rate based on the current fuel consumption rate of the engine, the current efficiency of the generator, and the current efficiency of the generator controller, and determine the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate; if the amount of electricity generated by the generator is less than the amount of electricity demanded, determine the series equivalent fuel consumption rate based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and the first battery power consumption compensation factor; if the amount of electricity generated by the generator is greater than the amount of electricity demanded, determine the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate, the current fuel consumption rate of the engine, the current efficiency of the generator, the current efficiency of the generator controller, the current charging efficiency of the battery, and the second battery power consumption compensation factor.

[0126] In some embodiments, the fourth acquisition module 505 is further configured to: compare the magnitude of the engine direct drive energy and the vehicle driving energy demand; if the engine direct drive energy is equal to the vehicle driving energy demand, then determine the current engine fuel consumption rate as the parallel equivalent fuel consumption rate; if the engine direct drive energy is less than the vehicle driving energy demand, then determine the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the pure electric equivalent fuel consumption rate, and the first battery power consumption compensation factor; if the engine direct drive energy is greater than the vehicle driving energy demand, then determine the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the current generator efficiency, the current generator controller efficiency, the current battery charging efficiency, and the second battery power consumption compensation factor.

[0127] In some embodiments, the second control module 506 is further configured to: compare the magnitudes of the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate; if the series equivalent fuel consumption rate is greater than the parallel equivalent fuel consumption rate, compare the magnitudes of the current vehicle speed and the target vehicle speed; and if the current vehicle speed is greater than the target vehicle speed, control the hybrid vehicle to enter parallel mode.

[0128] In some embodiments, the hybrid vehicle drive unit 500 is specifically configured to: acquire the current state of charge of the power battery and compare the current state of charge with a preset state of charge; if the current state of charge is greater than the preset state of charge, determine a first battery power consumption compensation factor according to a first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor; if the current state of charge is less than the preset state of charge, determine a second battery power consumption compensation factor according to a second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

[0129] The various modules in the aforementioned hybrid vehicle drive system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware within or independently of the processor in a computer device, or stored in software within the memory of a computer device, so that the processor can invoke and execute the corresponding operations of each module.

[0130] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 6 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores vehicle driving data. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements a hybrid vehicle drive method.

[0131] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0132] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps: acquiring an accelerator pedal opening signal and controlling a hybrid electric vehicle to enter pure electric mode based on the accelerator pedal opening signal; acquiring the engine's historical average fuel consumption rate and determining a pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate; acquiring the generator's generated power and the drive motor's required power, and determining a series equivalent fuel consumption rate based on the generator's generated power and the required power; controlling the hybrid electric vehicle to enter a series mode based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate; acquiring the engine's direct drive energy and the vehicle's driving energy requirements, and determining a parallel equivalent fuel consumption rate based on the engine's direct drive energy and the vehicle's driving energy requirements; and controlling the hybrid electric vehicle to enter a parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed.

[0133] In one embodiment, the determination of the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate, implemented by the processor executing a computer program, includes: acquiring historical operating efficiency data of vehicle components, and determining a basic power generation equivalent fuel consumption rate based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate, wherein the historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery; acquiring historical regenerative braking energy and historical vehicle driving energy, and determining a compensated power generation equivalent fuel consumption rate based on the historical regenerative braking energy and the historical vehicle driving energy; acquiring current operating efficiency data of vehicle components, and determining the pure electric equivalent fuel consumption rate based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and a first battery power consumption compensation factor, wherein the current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller.

[0134] In one embodiment, the determination of the series equivalent fuel consumption rate based on the generator's generated power and the demanded power, implemented by the processor executing a computer program, includes: comparing the generator's generated power and the demanded power; if the generator's generated power equals the demanded power, determining the current equivalent fuel consumption rate based on the engine's current fuel consumption rate, the generator's current efficiency, and the generator controller's current efficiency, and determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate; if the generator's generated power is less than the demanded power, determining the series equivalent fuel consumption rate based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the generator's generated power is greater than the demanded power, determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate, the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, the battery's current charging efficiency, and a second battery power consumption compensation factor.

[0135] In one embodiment, the determination of the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle's driving energy demand, implemented by the processor executing a computer program, includes: comparing the magnitude of the engine direct drive energy and the vehicle's driving energy demand; if the engine direct drive energy is equal to the vehicle's driving energy demand, then determining the current engine fuel consumption rate as the parallel equivalent fuel consumption rate; if the engine direct drive energy is less than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the pure electric equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the engine direct drive energy is greater than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the current generator efficiency, the current generator controller efficiency, the current battery charging efficiency, and a second battery power consumption compensation factor.

[0136] In one embodiment, the process of controlling the hybrid electric vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, implemented by the processor executing a computer program, includes: comparing the magnitudes of the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate; if the series equivalent fuel consumption rate is greater than the parallel equivalent fuel consumption rate, then comparing the magnitudes of the current vehicle speed and the target vehicle speed; and if the current vehicle speed is greater than the target vehicle speed, controlling the hybrid electric vehicle to enter parallel mode.

[0137] In one embodiment, the method implemented by the processor when executing the computer program further includes: obtaining the current state of charge of the power battery and comparing the current state of charge with a preset state of charge; if the current state of charge is greater than the preset state of charge, determining a first battery power consumption compensation factor according to a first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor; if the current state of charge is less than the preset state of charge, determining a second battery power consumption compensation factor according to a second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

[0138] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When executed by a processor, the computer program performs the following steps: acquiring an accelerator pedal opening signal and controlling a hybrid electric vehicle to enter pure electric mode based on the accelerator pedal opening signal; acquiring the engine's historical average fuel consumption rate and determining a pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate; acquiring the generator's generated power and the drive motor's required power, and determining a series equivalent fuel consumption rate based on the generator's generated power and the required power; controlling the hybrid electric vehicle to enter a series mode based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate; acquiring the engine's direct drive energy and the vehicle's driving energy requirements, and determining a parallel equivalent fuel consumption rate based on the engine's direct drive energy and the vehicle's driving energy requirements; and controlling the hybrid electric vehicle to enter a parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed.

[0139] In one embodiment, the computer program, when executed by a processor, determines the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate, comprising: acquiring historical operating efficiency data of vehicle components, and determining a basic power generation equivalent fuel consumption rate based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate, wherein the historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery; acquiring historical regenerative braking energy and historical vehicle driving energy, and determining a compensated power generation equivalent fuel consumption rate based on the historical regenerative braking energy and the historical vehicle driving energy; acquiring current operating efficiency data of vehicle components, and determining the pure electric equivalent fuel consumption rate based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and a first battery power consumption compensation factor, wherein the current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller.

[0140] In one embodiment, the computer program, when executed by a processor, determines the series equivalent fuel consumption rate based on the generator's output power and the demanded power, including: comparing the generator's output power and the demanded power; if the generator's output power equals the demanded power, determining the current equivalent fuel consumption rate based on the engine's current fuel consumption rate, the generator's current efficiency, and the generator controller's current efficiency, and determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate; if the generator's output power is less than the demanded power, determining the series equivalent fuel consumption rate based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the generator's output power is greater than the demanded power, determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate, the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, the battery's current charging efficiency, and a second battery power consumption compensation factor.

[0141] In one embodiment, the computer program, when executed by a processor, determines the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle's driving energy demand, including: comparing the magnitude of the engine direct drive energy and the vehicle's driving energy demand; if the engine direct drive energy is equal to the vehicle's driving energy demand, then determining the current engine fuel consumption rate as the parallel equivalent fuel consumption rate; if the engine direct drive energy is less than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the pure electric equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the engine direct drive energy is greater than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the current generator efficiency, the current generator controller efficiency, the current battery charging efficiency, and a second battery power consumption compensation factor.

[0142] In one embodiment, the computer program, when executed by a processor, controls the hybrid electric vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, including: comparing the magnitudes of the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate; if the series equivalent fuel consumption rate is greater than the parallel equivalent fuel consumption rate, then comparing the magnitudes of the current vehicle speed and the target vehicle speed; and if the current vehicle speed is greater than the target vehicle speed, controlling the hybrid electric vehicle to enter parallel mode.

[0143] In one embodiment, the method implemented by the computer program when executed by the processor further includes: obtaining the current state of charge of the power battery and comparing the current state of charge with a preset state of charge; if the current state of charge is greater than the preset state of charge, determining a first battery power consumption compensation factor according to a first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor; if the current state of charge is less than the preset state of charge, determining a second battery power consumption compensation factor according to a second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

[0144] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps: acquiring an accelerator pedal opening signal and controlling a hybrid electric vehicle to enter pure electric mode based on the accelerator pedal opening signal; acquiring the engine's historical average fuel consumption rate and determining a pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate; acquiring the generator's generated power and the drive motor's required power, and determining a series equivalent fuel consumption rate based on the generator's generated power and the required power; controlling the hybrid electric vehicle to enter a series mode based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate; acquiring the engine's direct drive energy and the vehicle's driving energy requirements, and determining a parallel equivalent fuel consumption rate based on the engine's direct drive energy and the vehicle's driving energy requirements; and controlling the hybrid electric vehicle to enter a parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed.

[0145] In one embodiment, the computer program, when executed by a processor, determines the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate, comprising: acquiring historical operating efficiency data of vehicle components, and determining a basic power generation equivalent fuel consumption rate based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate, wherein the historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery; acquiring historical regenerative braking energy and historical vehicle driving energy, and determining a compensated power generation equivalent fuel consumption rate based on the historical regenerative braking energy and the historical vehicle driving energy; acquiring current operating efficiency data of vehicle components, and determining the pure electric equivalent fuel consumption rate based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and a first battery power consumption compensation factor, wherein the current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller.

[0146] In one embodiment, the computer program, when executed by a processor, determines the series equivalent fuel consumption rate based on the generator's output power and the demanded power, including: comparing the generator's output power and the demanded power; if the generator's output power equals the demanded power, determining the current equivalent fuel consumption rate based on the engine's current fuel consumption rate, the generator's current efficiency, and the generator controller's current efficiency, and determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate; if the generator's output power is less than the demanded power, determining the series equivalent fuel consumption rate based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the generator's output power is greater than the demanded power, determining the series equivalent fuel consumption rate based on the current equivalent fuel consumption rate, the engine's current fuel consumption rate, the generator's current efficiency, the generator controller's current efficiency, the battery's current charging efficiency, and a second battery power consumption compensation factor.

[0147] In one embodiment, the computer program, when executed by a processor, determines the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle's driving energy demand, including: comparing the magnitude of the engine direct drive energy and the vehicle's driving energy demand; if the engine direct drive energy is equal to the vehicle's driving energy demand, then determining the current engine fuel consumption rate as the parallel equivalent fuel consumption rate; if the engine direct drive energy is less than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the pure electric equivalent fuel consumption rate, and a first battery power consumption compensation factor; if the engine direct drive energy is greater than the vehicle's driving energy demand, then determining the parallel equivalent fuel consumption rate based on the current engine fuel consumption rate, the current generator efficiency, the current generator controller efficiency, the current battery charging efficiency, and a second battery power consumption compensation factor.

[0148] In one embodiment, the computer program, when executed by a processor, controls the hybrid electric vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, including: comparing the magnitudes of the series equivalent fuel consumption rate and the parallel equivalent fuel consumption rate; if the series equivalent fuel consumption rate is greater than the parallel equivalent fuel consumption rate, then comparing the magnitudes of the current vehicle speed and the target vehicle speed; and if the current vehicle speed is greater than the target vehicle speed, controlling the hybrid electric vehicle to enter parallel mode.

[0149] In one embodiment, the method implemented by the computer program when executed by the processor further includes: obtaining the current state of charge of the power battery and comparing the current state of charge with a preset state of charge; if the current state of charge is greater than the preset state of charge, determining a first battery power consumption compensation factor according to a first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor; if the current state of charge is less than the preset state of charge, determining a second battery power consumption compensation factor according to a second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

[0150] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0151] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0152] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0153] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A hybrid electric vehicle driving method, characterized in that, The method includes: The accelerator pedal opening signal is acquired, and the hybrid vehicle is controlled to enter pure electric mode based on the accelerator pedal opening signal. Obtain the engine's historical average fuel consumption rate, and determine the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate; The generator output power and the drive motor demand power are obtained, and the series equivalent fuel consumption rate is determined based on the generator output power and the demand power. Based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate, the hybrid electric vehicle is controlled to enter series mode; Obtain the engine direct drive energy and the vehicle driving energy demand, and determine the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle driving energy demand; Based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed, the hybrid vehicle is controlled to enter the parallel mode; The step of controlling the hybrid vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed includes: The equivalent fuel consumption rate of the series circuit is compared with that of the equivalent fuel consumption rate of the parallel circuit. If the equivalent fuel consumption rate of the series circuit is greater than that of the equivalent fuel consumption rate of the parallel circuit, the current vehicle speed is compared with that of the target vehicle speed. If the current vehicle speed is greater than that of the target vehicle speed, the hybrid vehicle is controlled to enter the parallel mode. The step of determining the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate includes: The historical operating efficiency data of vehicle components is obtained, and the basic power generation equivalent fuel consumption rate is determined based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate. The historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery. Historical regenerative braking energy and historical vehicle driving energy are obtained, and the equivalent fuel consumption rate for compensated power generation is determined based on the historical regenerative braking energy and the historical vehicle driving energy. The current operating efficiency data of vehicle components is obtained, and the pure electric equivalent fuel consumption rate is determined based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and the first battery power consumption compensation factor. The current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller. The calculation method of the pure electric equivalent fuel consumption rate is shown in the following formula: BSFC EV =BSFC Eng_h / (or EM1_h *or Inv1_h ) / or BatChr_h *(1-E Rgn / E Drv ) / h BatDisc / (the EM2 *or Inv2 )* s SOC- In the formula, BSFC EV For pure electric equivalent fuel consumption rate, BSFC Eng_h η represents the engine's historical average fuel consumption rate. EM1_h η is the historical average efficiency of the generator. Inv1_h η is the historical average efficiency of the generator controller. BatChr_h For battery historical charging efficiency, E Rgn E recovers energy for historical braking. Dr For historical vehicle driving energy, η BatDisc For the current battery discharge efficiency, η EM2 η is the instantaneous efficiency of the drive motor. Inv2 For the instantaneous efficiency of the drive motor controller, σ SOC- Let σ be the power consumption compensation factor for the first battery, where σ is the power consumption compensation factor for the first battery. SOC- Less than 1.

2. The method according to claim 1, characterized in that, The step of determining the series equivalent fuel consumption rate based on the generator's output power and the demand power includes: Compare the amount of electricity generated by the generator with the amount of electricity demanded; If the generator output is equal to the demand, then the current equivalent fuel consumption rate is determined based on the current fuel consumption rate of the engine, the current efficiency of the generator, and the current efficiency of the generator controller, and the series equivalent fuel consumption rate is determined based on the current equivalent fuel consumption rate. If the generator output is less than the required output, the series equivalent fuel consumption rate is determined based on the pure electric equivalent fuel consumption rate, the current equivalent fuel consumption rate, and the first battery power consumption compensation factor. If the generator output is greater than the required output, the series equivalent fuel consumption rate is determined based on the current equivalent fuel consumption rate, the current fuel consumption rate of the engine, the current efficiency of the generator, the current efficiency of the generator controller, the current charging efficiency of the battery, and the second battery power consumption compensation factor.

3. The method according to claim 1, characterized in that, The step of determining the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle's driving energy demand includes: Compare the magnitude of the engine's direct-drive energy with the energy required for vehicle operation; If the direct drive energy of the engine is equal to the energy required for vehicle operation, then the current fuel consumption rate of the engine is determined as the parallel equivalent fuel consumption rate. If the direct drive energy of the engine is less than the energy required for vehicle operation, the parallel equivalent fuel consumption rate is determined based on the current fuel consumption rate of the engine, the pure electric equivalent fuel consumption rate, and the first battery power consumption compensation factor. If the direct drive energy of the engine is greater than the energy required for vehicle operation, the parallel equivalent fuel consumption rate is determined based on the current fuel consumption rate of the engine, the current efficiency of the generator, the current efficiency of the generator controller, the current charging efficiency of the battery, and the second battery power consumption compensation factor.

4. The method according to claim 2 or 3, characterized in that, The method further includes: Obtain the current state of charge of the power battery and compare the current state of charge with the preset state of charge; If the current state of charge is greater than the preset state of charge, then a first battery power consumption compensation factor is determined according to the first compensation factor range, wherein the maximum value in the first compensation factor range is less than the preset compensation factor; If the current state of charge is less than the preset state of charge, then a second battery power consumption compensation factor is determined according to the second compensation factor range, wherein the minimum value in the second compensation factor range is greater than the preset compensation factor.

5. A hybrid electric vehicle drive system, characterized in that, The device includes: The first acquisition module is used to acquire the accelerator pedal opening signal and control the hybrid vehicle to enter pure electric mode according to the accelerator pedal opening signal. The second acquisition module is used to acquire the historical average fuel consumption rate of the engine and determine the pure electric equivalent fuel consumption rate based on the historical average fuel consumption rate of the engine. The third acquisition module is used to acquire the generator's power output and the drive motor's power demand, and to determine the series equivalent fuel consumption rate based on the generator's power output and the power demand. The first control module is used to control the hybrid vehicle to enter the series mode based on the pure electric equivalent fuel consumption rate and the series equivalent fuel consumption rate. The fourth acquisition module is used to acquire the engine direct drive energy and the vehicle driving energy demand, and determine the parallel equivalent fuel consumption rate based on the engine direct drive energy and the vehicle driving energy demand. The second control module is used to control the hybrid vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed. The step of controlling the hybrid vehicle to enter parallel mode based on the series equivalent fuel consumption rate, the parallel equivalent fuel consumption rate, the current vehicle speed, and the target vehicle speed includes: The equivalent fuel consumption rate of the series circuit is compared with that of the equivalent fuel consumption rate of the parallel circuit. If the equivalent fuel consumption rate of the series circuit is greater than that of the equivalent fuel consumption rate of the parallel circuit, the current vehicle speed is compared with that of the target vehicle speed. If the current vehicle speed is greater than that of the target vehicle speed, the hybrid vehicle is controlled to enter the parallel mode. The step of determining the pure electric equivalent fuel consumption rate based on the engine's historical average fuel consumption rate includes: The historical operating efficiency data of vehicle components is obtained, and the basic power generation equivalent fuel consumption rate is determined based on the historical operating efficiency data of vehicle components and the historical average fuel consumption rate. The historical operating efficiency data of vehicle components includes the historical average efficiency of the generator, the historical average efficiency of the generator controller, and the historical charging efficiency of the battery. Historical regenerative braking energy and historical vehicle driving energy are obtained, and the equivalent fuel consumption rate for compensated power generation is determined based on the historical regenerative braking energy and the historical vehicle driving energy. The current operating efficiency data of vehicle components is obtained, and the pure electric equivalent fuel consumption rate is determined based on the current operating efficiency data of vehicle components, the basic power generation equivalent fuel consumption rate, the compensated power generation equivalent fuel consumption rate, and the first battery power consumption compensation factor. The current operating efficiency data of vehicle components includes the current battery discharge efficiency, the instantaneous efficiency of the drive motor, and the instantaneous efficiency of the drive motor controller. The calculation method of the pure electric equivalent fuel consumption rate is shown in the following formula: BSFC EV =BSFC Eng_h / (or EM1_h *or Inv1_h ) / or BatChr_h *(1-E Rgn / E Drv ) / h BatDisc / (the EM2 *or Inv2 )* s SOC- In the formula, BSFC EV For pure electric equivalent fuel consumption rate, BSFC Eng_h η represents the engine's historical average fuel consumption rate. EM1_h η is the historical average efficiency of the generator. Inv1_h η is the historical average efficiency of the generator controller. BatChr_h For battery historical charging efficiency, E Rgn E recovers energy for historical braking. Dr For historical vehicle driving energy, η BatDisc For the current battery discharge efficiency, η EM2 η is the instantaneous efficiency of the drive motor. Inv2 For the instantaneous efficiency of the drive motor controller, σ SOC- Let σ be the power consumption compensation factor for the first battery, where σ is the power consumption compensation factor for the first battery. SOC- Less than 1.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 4.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 4.

Images