A power distribution method, device, equipment and storage medium of a hybrid vehicle

Abstract

The application discloses a power distribution method, device and equipment of a hybrid vehicle and a storage medium, and the method comprises the following steps: determining a first change curve and a second change curve; determining a current maximum torque range of an engine, a current maximum torque range of a power generator and a current maximum torque range of a driving motor based on a current engine speed; discretizing the current maximum torque range of the engine, the current maximum torque range of the power generator and the current maximum torque range of the driving motor respectively, determining a plurality of selected torque combinations, and determining candidate torque combinations meeting preset conditions; determining candidate battery consumption powers corresponding to each candidate torque combination; and determining a target torque combination under a current working condition based on candidate engine fuel consumptions and candidate battery consumption powers corresponding to each candidate torque combination. Through the technical scheme of the embodiment of the application, flexible distribution of the power of the hybrid vehicle is realized, the efficiency of the engine is improved, and the waste of energy is reduced.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a power distribution method, device, equipment and storage medium for hybrid vehicles. Background Technology

[0002] With the development of new energy vehicle technology, hybrid vehicles with multiple power sources are becoming increasingly common. How to achieve power distribution among the various power sources in a hybrid vehicle has become a crucial factor restricting the development of new energy vehicle technology.

[0003] Currently, the industry's technology for power management in multi-power source hybrid vehicles is mainly based on fixed power distribution control methods. When the engine starts, the engine bears most of the vehicle's power demand; if the engine system cannot handle it, the electric motor will automatically take over. However, this method ignores efficiency issues, has low flexibility, and results in some energy waste. Summary of the Invention

[0004] This invention provides a power distribution method, device, equipment, and storage medium for hybrid vehicles, so as to achieve flexible power distribution of hybrid vehicles, improve engine efficiency, and reduce energy waste.

[0005] In a first aspect, embodiments of the present invention provide a power distribution method for a hybrid vehicle, comprising:

[0006] Based on the universal characteristic curve of the engine, the first variation curve between engine torque, speed and fuel consumption is determined.

[0007] Based on the universal characteristic curve of the motor, a second variation curve is determined between the motor's torque, speed, and efficiency.

[0008] Based on the current engine speed, determine the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor;

[0009] Based on the preset torque interval, the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor are discretized to determine multiple possible torque combinations among the candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0010] Based on the vehicle's required torque under the current operating conditions and each candidate torque combination, determine the candidate torque combinations that meet the preset conditions;

[0011] Based on the candidate torque combinations, the first variation curve, and the second variation curve, determine the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination.

[0012] Based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor, determine the power consumption of the candidate battery corresponding to each candidate torque combination;

[0013] Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, the target torque combination under the current operating condition is determined.

[0014] Secondly, embodiments of the present invention also provide a power distribution device for a hybrid vehicle, comprising:

[0015] The first curve determination module is used to determine the first variation curve between engine torque, speed and fuel consumption based on the engine's universal characteristic curve.

[0016] The second curve determination module is used to determine the second variation curve between the motor's torque, speed and efficiency based on the motor's universal characteristic curve.

[0017] The maximum torque determination module is used to determine the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the current engine speed.

[0018] The candidate torque combination determination module is used to discretize the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on a preset torque interval, and determine multiple candidate torque combinations among candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0019] The candidate torque combination determination module is used to determine the candidate torque combination that meets the preset conditions based on the vehicle's required torque under the current operating conditions and each candidate torque combination.

[0020] The candidate power determination module is used to determine the candidate engine fuel consumption, candidate generator power generation and candidate drive motor power consumption corresponding to each candidate torque combination based on the candidate torque combination, the first change curve and the second change curve.

[0021] The battery consumption determination module is used to determine the candidate battery consumption power corresponding to each candidate torque combination based on the power generation power of the candidate generator motor and the power consumption power of the candidate drive motor.

[0022] The target torque determination module is used to determine the target torque combination under the current operating conditions based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination.

[0023] Thirdly, embodiments of the present invention also provide an electronic device, characterized in that the electronic device comprises: at least one processor; and

[0024] A memory communicatively connected to the at least one processor; wherein,

[0025] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the power distribution method for hybrid vehicles provided in any embodiment of the present invention.

[0026] Fourthly, embodiments of the present invention also provide a computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, which are used to enable a processor to execute the power distribution method for a hybrid vehicle provided in any embodiment of the present invention.

[0027] The technical solution of this invention determines a first variation curve between engine torque, speed, and fuel consumption based on the universal characteristic curve of the engine. This curve can then guide engine operation to achieve higher fuel efficiency. A second variation curve between motor torque, speed, and efficiency is determined based on the universal characteristic curve of the electric motor. This curve can then guide motor operation to achieve higher motor efficiency. Based on the current engine speed, the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor are determined. These ranges are then discretized based on preset torque intervals to determine multiple candidate torque combinations among candidate engine torque, candidate generator torque, and candidate drive motor torque. This reduces the complexity of torque data and accelerates computation. Based on the vehicle's required torque under current operating conditions and each candidate torque combination, candidate torque combinations that meet preset conditions are determined. Based on these candidate torque combinations, the first variation curve, and the second variation curve, candidate engine fuel consumption, candidate generator power output, and candidate drive motor power consumption are determined for each candidate torque combination. This facilitates the selection of appropriate candidate torque combinations to adjust the vehicle's power distribution according to actual needs. Based on the candidate generator power output and candidate drive motor power consumption, candidate battery power consumption is determined for each candidate torque combination. Based on the candidate engine fuel consumption and candidate battery power consumption for each candidate torque combination, the target torque combination under current operating conditions is determined, thereby achieving flexible power distribution in hybrid vehicles, improving engine efficiency, and reducing energy waste.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a flowchart of a power distribution method for a hybrid vehicle according to Embodiment 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the universal characteristic curve of the engine according to Embodiment 1 of the present invention;

[0032] Figure 3 This is a schematic diagram of the universal characteristic curve of the motor according to Embodiment 1 of the present invention;

[0033] Figure 4 This is a structural schematic diagram of a hybrid vehicle according to Embodiment 1 of the present invention;

[0034] Figure 5 This is a flowchart of a power distribution method for a hybrid vehicle according to Embodiment 2 of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of a power distribution device for a hybrid vehicle according to Embodiment 3 of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of an electronic device that implements the power distribution method for hybrid vehicles according to embodiments of the present invention. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "target," "current," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Example 1

[0040] Figure 1 This is a flowchart illustrating a power distribution method for a hybrid vehicle according to Embodiment 1 of the present invention. This embodiment is applicable to situations involving the distribution of power in hybrid vehicles. Figure 1 As shown, the method can be executed by the power distribution device of a hybrid vehicle, which can be implemented in hardware and / or software and can be configured in electronic devices.

[0041] like Figure 1 As shown, the method specifically includes the following steps:

[0042] S110. Based on the universal characteristic curve of the engine, determine the first variation curve between the engine's torque, speed and fuel consumption.

[0043] Among these, the universal characteristic curve of an engine can refer to the curve reflecting the torque and power output of the engine at different speeds. Fuel consumption can refer to the amount of fuel consumed per kilowatt-hour of energy output by the engine. The first variation curve can refer to the curve reflecting the fuel consumption of the engine at different speeds and torques.

[0044] Specifically, the universal characteristic curve of the engine is as follows: Figure 2 As shown in the figure, the horizontal axis represents engine speed, the left vertical axis represents engine torque, and the curved curve represents engine power. Based on the torque and speed corresponding to different engine power, the engine fuel consumption is calculated at different engine power, torque, and speed. A curve is then plotted based on the calculated fuel consumption and its variation with different engine torque and speed; this curve reflects the first variation curve of fuel consumption at different engine speeds and torques. By understanding the engine's fuel consumption at different engine power, torque, and speed, engine operation can be better controlled to achieve more efficient fuel utilization, which helps improve the fuel economy of hybrid vehicles and reduce energy consumption.

[0045] S120. Based on the universal characteristic curve of the motor, determine the second variation curve between the motor's torque, speed and efficiency.

[0046] The universal characteristic curve of the motor can refer to the curve plotted as changes in motor speed and torque, and the corresponding changes in fuel consumption rate. Motor efficiency can be defined as the ratio of output power to input power. The second variation curve can be a curve reflecting the motor's efficiency at different speeds and torques.

[0047] Specifically, the universal characteristic curve of the motor is as follows: Figure 3 As shown in the figure, the horizontal axis represents the motor speed, the left vertical axis represents the motor torque, and the right vertical axis represents the corresponding fuel efficiency. Based on the motor's torque and speed, the ratio of motor output power to input power is calculated at different motor torques and speeds. A curve is then plotted based on this calculated ratio of output power to input power, reflecting the change in motor efficiency at different speeds and torques. Understanding the motor's efficiency at different engine torques and speeds allows for better control of motor operation and reduces energy consumption.

[0048] S130. Based on the current engine speed, determine the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor.

[0049] Here, "current engine speed" refers to the engine's speed at the current moment. "Current maximum torque range" refers to the maximum fluctuation range of engine torque at the current engine speed. "Current maximum torque range" refers to the maximum fluctuation range of generator torque at the current engine speed. "Current maximum torque range" refers to the maximum fluctuation range of drive motor torque at the current engine speed.

[0050] Specifically, based on the current engine speed, the maximum torque range that the engine can achieve at the current engine speed is determined; based on the current engine speed, the current speed of the generator motor is determined, and the maximum torque range that the generator motor can achieve at the current generator motor speed is determined; based on the generator motor speed, the current speed of the drive motor is determined, and the maximum torque range that the drive motor can achieve at the current drive motor speed is determined, thereby determining the power range that the current engine and each motor can achieve, so as to realize flexible power distribution of the hybrid vehicle at the current moment.

[0051] For example, S130 may include: determining the current maximum torque of the engine based on the current engine speed; determining the current generator speed and the current drive motor speed based on the configuration relationship between the engine, the generator motor, and the drive motor and the current engine speed; determining the current maximum torque of the generator motor and the current maximum torque of the drive motor based on the current generator motor speed and the current drive motor speed; and obtaining the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the current maximum torque of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor.

[0052] Here, "current maximum torque of the engine" refers to the maximum torque the engine can achieve at the current engine speed. "Configuration relationship" refers to the connection relationship between the engine, generator, and drive motor. "Current generator speed" refers to the generator speed at the current moment. "Current drive motor speed" refers to the drive motor speed at the current moment. "Current maximum torque of the generator" refers to the maximum torque the generator can achieve at the current speed. "Current maximum torque of the drive motor" refers to the maximum torque the drive motor can achieve at the current speed.

[0053] Specifically, based on the current engine speed, the current maximum torque of the engine at that current engine speed is determined. Based on the configuration relationship between the engine, generator, and drive motor, the relationship between the engine speed, generator speed, and drive motor speed is determined. Based on this relationship and the current engine speed, the current generator speed and current drive motor speed are determined. Based on these speeds, the current maximum torque of the generator and drive motor at the current generator speed and drive motor speed are determined. Based on the engine's current maximum torque, the torque range between the engine's current maximum torque and the range where the engine torque is zero is defined as the engine's current maximum torque range. Similarly, based on the generator's current maximum torque, the torque range between the generator's current maximum torque and the range where the generator torque is zero is defined as the generator's current maximum torque range. Likewise, based on the drive motor's current maximum torque, the torque range between the drive motor's current maximum torque and the range where the drive motor torque is zero is defined as the drive motor's current maximum torque range. This determines the power range achievable by the engine and each motor, facilitating flexible power distribution to the hybrid vehicle at any given moment.

[0054] For example, such as Figure 4As shown, the engine, generator, and drive motor are connected via a common drive shaft, meaning their rotational speeds are equal. Based on the current engine speed, the current maximum torque of the engine at that speed is determined. Based on the current engine speed, the current speeds of the generator and drive motor can be directly determined to be the same as the current engine speed. Based on the current engine speed, the current maximum torque of the engine, generator, and drive motor are determined. Based on the current maximum torque of the engine, generator, and drive motor, the current maximum torque ranges of the engine, generator, and drive motors are obtained.

[0055] S140. Discretize the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the preset torque interval, and determine multiple candidate torque combinations among the candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0056] The preset torque interval can refer to a pre-set interval torque length used for sampling. The candidate engine torque can refer to the torque obtained by discretely sampling the current maximum torque range of the engine according to the preset torque interval. The candidate generator torque can refer to the torque obtained by discretely sampling the current maximum torque range of the generator according to the preset torque interval. The candidate drive motor torque can refer to the torque obtained by discretely sampling the current maximum torque range of the drive motor according to the preset torque interval. The candidate torque combination can refer to a torque combination that includes one candidate engine torque, one candidate generator torque, and one candidate drive motor torque.

[0057] Specifically, the current maximum torque range of the engine is discretely sampled based on preset torque intervals, and the sampled torques are determined as candidate engine torques. Similarly, the current maximum torque range of the generator is discretely sampled based on preset torque intervals, and the sampled torques are determined as candidate generator torques. The current maximum torque range of the drive motor is also discretely sampled based on preset torque intervals, and the sampled torques are determined as candidate drive motor torques. Based on the candidate engine torques, candidate generator torques, and candidate drive motor torques, any one of the candidate engine torques, any one of the candidate generator torques, and any one of the candidate drive motor torques are combined to obtain multiple candidate torque combinations. This yields all power distribution schemes for each power source in the vehicle at the current moment, facilitating the selection and optimization of appropriate power distribution schemes according to actual needs, thereby improving the vehicle's fuel economy.

[0058] For example, S140 may include: discretizing the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on a preset torque interval to determine multiple candidate engine torques, multiple candidate generator motor torques, and multiple candidate drive motor torques; and arbitrarily combining the multiple candidate engine torques, multiple candidate generator motor torques, and multiple candidate drive motor torques to determine multiple candidate torque combinations including one candidate engine torque, one candidate generator motor torque, and one candidate drive motor torque.

[0059] Specifically, based on preset torque intervals, the current maximum torque ranges of the engine, generator, and drive motor are discretely sampled. Based on the sampling results, multiple candidate engine torques, multiple candidate generator torques, and multiple candidate drive motor torques are determined. These candidate torques are then arbitrarily combined, and a torque combination containing one candidate engine torque, one candidate generator torque, and one candidate drive motor torque is defined as a candidate torque combination. This yields multiple candidate torque combinations, thus providing all possible power distribution schemes for each power source in the vehicle at the current moment. This allows for the selection and optimization of a suitable power distribution scheme based on actual needs, thereby improving the vehicle's fuel efficiency.

[0060] S150. Based on the vehicle's required torque under the current operating conditions and each candidate torque combination, determine the candidate torque combination that meets the preset conditions.

[0061] Here, "current operating condition" refers to the vehicle's operating status and performance under current road conditions and driving environment. For example, current operating condition could include parameters such as vehicle speed, acceleration, engine speed, and vehicle load. "Vehicle required torque" refers to the torque required by the vehicle under the current driving conditions. "Preset conditions" refer to the conditions used to determine whether a candidate torque combination is the optimal torque combination under the current operating conditions. "Candidate torque combination" refers to a candidate torque combination that meets the preset conditions.

[0062] Specifically, based on the vehicle's required torque under current operating conditions and preset conditions, the relationships that must be satisfied between the torque of the candidate engine, the torque of the candidate generator, and the torque of the candidate drive motor and the vehicle's required torque are determined, and the candidate torque combinations that satisfy these relationships are identified as candidate torque combinations. This initial screening of the candidate torque combinations facilitates the rapid selection of appropriate candidate torque combinations based on actual needs to adjust the operating states of the vehicle's various power sources, thereby achieving optimal power distribution and lower fuel consumption.

[0063] For example, S150 may include: adding the candidate engine torque corresponding to the candidate torque combination to the candidate drive motor torque based on the candidate torque combination to obtain a first torque; subtracting the first torque from the candidate generator motor torque corresponding to the candidate torque combination based on the first torque and the candidate generator motor torque to obtain a second torque; comparing the vehicle demand torque under the current operating condition and the second torque, and determining a candidate torque combination based on the comparison result.

[0064] S160. Based on the candidate torque combinations, the first variation curve, and the second variation curve, determine the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination.

[0065] Among these, candidate engine fuel consumption can refer to the engine's fuel consumption when the engine torque at the current engine speed is the same as the engine torque in the candidate torque combination. Candidate generator power output can refer to the generator's power output when the generator torque at the current generator speed is the same as the generator torque in the candidate torque combination. Candidate drive motor power consumption can refer to the drive motor's power consumption when the drive motor torque at the current drive motor speed is the same as the drive motor torque in the candidate torque combination.

[0066] Specifically, the torque of each candidate engine in the candidate torque combination is substituted into the first variation curve to determine the fuel consumption of the candidate engine corresponding to each torque. The torque of each candidate generator in the candidate torque combination is substituted into the second variation curve to determine the generator efficiency corresponding to each torque combination. Based on the current generator speed, the corresponding generator torque, and the generator efficiency, the generator power output of each candidate torque combination is obtained. The torque of each candidate drive motor in the candidate torque combination is substituted into the second variation curve to determine the drive motor efficiency. Based on the current drive motor speed, the corresponding drive motor torque, and the drive motor efficiency, the drive motor power consumption of each candidate torque combination is obtained. This allows for better control of energy utilization and improved energy efficiency.

[0067] S170. Based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor, determine the power consumption of the candidate battery corresponding to each candidate torque combination.

[0068] Among them, the power consumed by the candidate battery can refer to the power consumed by the battery when the vehicle is running at the candidate torque combination.

[0069] Specifically, based on the power output of candidate generator motors and the power consumption of candidate drive motors, the power consumed by the battery when the vehicle is running in each candidate torque combination is determined, and the power consumed by the battery corresponding to each candidate torque combination is determined as the power consumed by the candidate battery corresponding to each candidate torque combination. This can make more effective use of limited energy, thereby helping to optimize battery management and improve energy efficiency.

[0070] For example, S170 may include: for each candidate torque combination, subtracting the power consumption of the candidate drive motor corresponding to the candidate torque combination from the power generation of the candidate generator motor to obtain the power consumption of the candidate battery corresponding to the candidate torque combination.

[0071] Specifically, for each candidate torque combination, the power consumption of the candidate drive motor corresponding to the candidate torque combination is subtracted from the power generation of the candidate generator motor. If the result is negative, it indicates that the battery is charging, and this negative value is determined as the power consumption of the candidate battery corresponding to the candidate torque combination. If the result is positive, it indicates that the battery is discharging, and this positive value is determined as the power consumption of the candidate battery corresponding to the candidate torque combination. This allows for more effective use of limited energy, helps optimize battery management, and improves energy efficiency.

[0072] S180. Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, determine the target torque combination under the current operating conditions.

[0073] The target torque combination can refer to the optimal torque combination required by the vehicle under the current operating conditions.

[0074] Specifically, based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, a penalty function is established, and the penalty function value corresponding to each candidate torque combination is determined. Based on the penalty function value corresponding to each candidate torque combination, the target torque combination of the vehicle under the current operating condition is determined, thereby obtaining the optimal torque combination of the vehicle under the current operating condition, and realizing flexible power distribution of the hybrid vehicle according to the current operating condition.

[0075] For example, S180 may include: determining a penalty energy value corresponding to each candidate torque combination based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination; comparing the penalty energy values ​​corresponding to each candidate torque combination, and determining the target torque combination under the current operating condition based on the comparison results.

[0076] The penalty energy value can refer to the function value of the penalty function corresponding to the candidate torque combination.

[0077] Specifically, based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, a penalty function is established to determine the penalty energy value corresponding to each candidate torque combination. The penalty energy values ​​corresponding to each candidate torque combination are compared, and based on the comparison results, the candidate torque combination corresponding to the minimum penalty energy value is determined as the target torque combination for the vehicle under the current operating conditions. This yields the optimal power distribution scheme for the vehicle under the current operating conditions, enabling flexible power distribution in hybrid vehicles, improving engine efficiency, and reducing energy waste.

[0078] The technical solution of this invention determines a first variation curve between engine torque, speed, and fuel consumption based on the universal characteristic curve of the engine. This curve can then guide engine operation to achieve higher fuel efficiency. A second variation curve between motor torque, speed, and efficiency is determined based on the universal characteristic curve of the electric motor. This curve can then guide motor operation to achieve higher motor efficiency. Based on the current engine speed, the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor are determined. These ranges are then discretized based on preset torque intervals to determine multiple candidate torque combinations among candidate engine torque, candidate generator torque, and candidate drive motor torque. This reduces the complexity of torque data and accelerates computation. Based on the vehicle's required torque under current operating conditions and each candidate torque combination, candidate torque combinations that meet preset conditions are determined. Based on these candidate torque combinations, the first variation curve, and the second variation curve, the candidate engine fuel consumption, candidate generator power output, and candidate drive motor power consumption for each candidate torque combination are determined. This facilitates the selection of appropriate candidate torque combinations to adjust the vehicle's power distribution according to actual needs. Based on the candidate generator power output and candidate drive motor power consumption, the candidate battery power consumption for each candidate torque combination is determined. Finally, based on the candidate engine fuel consumption and candidate battery power consumption for each candidate torque combination, the target torque combination under current operating conditions is determined. This enables flexible power distribution in hybrid vehicles, improves engine efficiency, and reduces energy waste.

[0079] Example 2

[0080] Figure 5 This is a flowchart of a power distribution method for a hybrid vehicle provided in Embodiment 2 of the present invention. Based on the above embodiments, this embodiment optimizes the step of "determining the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination based on candidate torque combinations, the first variation curve, and the second variation curve." Explanations of terms that are the same as or corresponding to those in the above embodiments are not repeated here.

[0081] See Figure 5 The alternative power distribution method for hybrid vehicles provided in this embodiment specifically includes the following steps:

[0082] S201. Based on the universal characteristic curve of the engine, determine the first variation curve between the engine's torque, speed and fuel consumption.

[0083] S202. Based on the universal characteristic curve of the motor, determine the second variation curve between the motor's torque, speed and efficiency.

[0084] S203. Based on the current engine speed, determine the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor.

[0085] S204. Discretize the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the preset torque interval, and determine multiple candidate torque combinations among the candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0086] S205. Based on the vehicle's required torque under the current operating conditions and each candidate torque combination, determine the candidate torque combination that meets the preset conditions.

[0087] S206. Based on the candidate engine torque and the first variation curve corresponding to each candidate torque combination, determine the candidate engine fuel consumption corresponding to each candidate torque combination.

[0088] Among them, candidate engine torque can refer to the engine torque in the candidate torque combination.

[0089] Specifically, the candidate engine torque corresponding to each candidate torque combination is input into the first variation curve. The first variation curve obtains the candidate engine fuel consumption corresponding to each candidate torque combination based on the current engine speed and candidate engine torque, which facilitates the quick selection of a suitable candidate torque combination to adjust the engine's working state according to actual needs, so as to achieve optimal power and lower fuel consumption.

[0090] For example, the engine torque can be represented by T, the current engine speed can be represented by n, and the engine fuel consumption can be identified by Z. Then the first change curve can be Z = F(T,n). If the candidate engine torque corresponding to the candidate torque combination is T1, then the candidate engine fuel consumption corresponding to the candidate torque combination is: Z1 = F(T1,n).

[0091] S207. Based on the candidate generator torque and the second variation curve corresponding to each candidate torque combination, determine the generator power of the candidate generator corresponding to each candidate torque combination.

[0092] Among them, the candidate generator torque can refer to the generator torque in the candidate torque combination.

[0093] Specifically, the torque of each candidate generator motor in the candidate torque combination is substituted into the second variation curve to determine the generator motor efficiency corresponding to each candidate torque combination. Based on the current generator motor speed, the candidate generator motor torque corresponding to the candidate torque combination, and the generator motor efficiency, the generator power of the candidate generator motor corresponding to each candidate torque combination is obtained. This can provide a basis for optimizing energy utilization, improving vehicle performance, and reducing fuel consumption.

[0094] For example, the torque of the generator can be represented by T, the current generator speed can be represented by n, and the generator efficiency can be identified by S. Then the second variation curve can be S = F(T,n). If the candidate generator torque corresponding to the candidate torque combination is T1, then the efficiency of the candidate generator corresponding to this candidate torque combination is: S1 = F(T1,n). Furthermore, the generator power of the candidate generator is the product of the electrical energy generated by the generator and its efficiency. The generator power of the candidate generator is: P = T1 × n / 9550 × S1. Where 9550 is the conversion coefficient between mechanical energy and electrical energy.

[0095] S208. Based on the candidate drive motor torque and the second change curve corresponding to each candidate torque combination, determine the power consumption of the candidate drive motor corresponding to each candidate torque combination.

[0096] Among them, the candidate drive motor torque can refer to the drive motor torque in the candidate torque combination.

[0097] Specifically, the torque of each candidate drive motor in the candidate torque combination is substituted into the second variation curve to determine the drive motor efficiency corresponding to each candidate torque combination. Based on the current drive motor speed, the torque of the candidate drive motor corresponding to the candidate torque combination, and the drive motor efficiency, the power consumption of the candidate drive motor corresponding to each candidate torque combination is obtained, thereby enabling better control of energy utilization and improving energy utilization efficiency.

[0098] For example, the torque of the drive motor can be represented by T, the current speed of the drive motor can be represented by n, and the efficiency of the drive motor can be identified by Y. Then the second variation curve can be Y = F(T,n). If the torque of the candidate drive motor corresponding to the candidate torque combination is T1, then the efficiency of the candidate drive motor corresponding to the candidate torque combination is: Y1 = F(T1,n). Furthermore, the power consumption of the candidate drive motor is the quotient of the electrical energy output by the drive motor and the efficiency. Then the power consumption of the candidate drive motor is: P = T1 × n / 9550 / Y1. Where 9550 is the conversion coefficient between mechanical energy and electrical energy.

[0099] S209. Based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor, determine the power consumption of the candidate battery corresponding to each candidate torque combination.

[0100] S210. Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, determine the target torque combination under the current operating conditions.

[0101] The technical solution of this invention determines the fuel consumption of each candidate engine for each candidate torque combination by using the candidate engine torque and a first variation curve. This facilitates the rapid selection of a suitable candidate torque combination to adjust the engine's operating state based on actual needs, achieving optimal power and lower fuel consumption. Based on the candidate generator torque and a second variation curve corresponding to each candidate torque combination, the power generation of the candidate generator for each candidate torque combination is determined, providing a basis for optimizing energy utilization, improving vehicle performance, and reducing fuel consumption. Based on the candidate drive motor torque and a second variation curve corresponding to each candidate torque combination, the power consumption of the candidate drive motor for each candidate torque combination is determined, allowing for better control of energy utilization. This further enables flexible power distribution in hybrid vehicles, improves engine efficiency, and reduces energy waste.

[0102] Example 3

[0103] Figure 6 This is a schematic diagram of the power distribution device for a hybrid vehicle provided in Embodiment 3 of the present invention. Figure 6 As shown, the device includes: a first curve determination module 310, a second curve determination module 320, a maximum torque determination module 330, a candidate torque combination determination module 340, a candidate torque combination determination module 350, a candidate power determination module 360, a battery consumption determination module 370, and a target torque determination module 380.

[0104] The first curve determination module 310 is used to determine the first variation curve between the engine's torque, speed and fuel consumption based on the engine's universal characteristic curve.

[0105] The second curve determination module 320 is used to determine the second variation curve between the motor's torque, speed and efficiency based on the motor's universal characteristic curve.

[0106] The maximum torque determination module 330 is used to determine the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the current engine speed.

[0107] The candidate torque combination determination module 340 is used to discretize the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on a preset torque interval, and determine multiple candidate torque combinations among candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0108] The candidate torque combination determination module 350 is used to determine the candidate torque combination that meets the preset conditions based on the vehicle's required torque under the current operating conditions and each candidate torque combination.

[0109] The candidate power determination module 360 ​​is used to determine the candidate engine fuel consumption, candidate generator power generation and candidate drive motor power consumption corresponding to each candidate torque combination based on the candidate torque combination, the first change curve and the second change curve.

[0110] The battery consumption determination module 370 is used to determine the candidate battery consumption power corresponding to each candidate torque combination based on the power generation power of the candidate generator motor and the power consumption power of the candidate drive motor.

[0111] The target torque determination module 380 is used to determine the target torque combination under the current operating conditions based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination.

[0112] The technical solution of this embodiment determines a first variation curve between engine torque, speed, and fuel consumption based on the engine's universal characteristic curve. This curve can then guide engine operation to achieve higher fuel efficiency. A second variation curve between motor torque, speed, and efficiency is determined based on the motor's universal characteristic curve. This curve can then guide motor operation to achieve higher motor efficiency. Based on the current engine speed, the current maximum torque range of the engine, the generator, and the drive motor is determined. These ranges are then discretized based on preset torque intervals to determine multiple candidate torque combinations among candidate engine torque, candidate generator torque, and candidate drive motor torque. This reduces the complexity of torque data and accelerates computation. Based on the vehicle's required torque under current operating conditions and each candidate torque combination, candidate torque combinations that meet preset conditions are determined. Based on these candidate torque combinations, the first variation curve, and the second variation curve, candidate engine fuel consumption, candidate generator power output, and candidate drive motor power consumption are determined for each candidate torque combination. This facilitates the selection of appropriate candidate torque combinations to adjust the vehicle's power distribution according to actual needs. Based on the candidate generator power output and candidate drive motor power consumption, candidate battery power consumption is determined for each candidate torque combination. Based on the candidate engine fuel consumption and candidate battery power consumption for each candidate torque combination, the target torque combination under current operating conditions is determined, thereby achieving flexible power distribution in hybrid vehicles, improving engine efficiency, and reducing energy waste.

[0113] Optionally, the maximum torque determination module 330 is specifically used for: determining the current maximum torque of the engine based on the current engine speed; determining the current generator speed and the current drive motor speed based on the configuration relationship between the engine, the generator motor, and the drive motor and the current engine speed; determining the current maximum torque of the generator motor and the current maximum torque of the drive motor based on the current generator motor speed and the current drive motor speed; and obtaining the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the current maximum torque of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor.

[0114] Optionally, the candidate torque combination determination module 340 is specifically used to: discretize the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on a preset torque interval, and determine multiple candidate engine torques, multiple candidate generator motor torques, and multiple candidate drive motor torques; and arbitrarily combine the multiple candidate engine torques, multiple candidate generator motor torques, and multiple candidate drive motor torques to determine multiple candidate torque combinations including one candidate engine torque, one candidate generator motor torque, and one candidate drive motor torque.

[0115] Optionally, the candidate torque combination determination module 350 is specifically used for: adding the candidate engine torque corresponding to the candidate torque combination to the candidate drive motor torque based on the candidate torque combination to obtain a first torque; subtracting the first torque from the candidate generator motor torque corresponding to the candidate torque combination based on the first torque and the candidate generator motor torque to obtain a second torque; comparing the vehicle demand torque under the current operating condition and the second torque, and determining the candidate torque combination based on the comparison result.

[0116] Optionally, the candidate power determination module 360 ​​is specifically used to: determine the fuel consumption of the candidate engine corresponding to each candidate torque combination based on the candidate engine torque and the first change curve corresponding to each candidate torque combination; determine the power generation of the candidate generator corresponding to each candidate torque combination based on the candidate generator torque and the second change curve corresponding to each candidate torque combination; and determine the power consumption of the candidate drive motor corresponding to each candidate torque combination based on the candidate drive motor torque and the second change curve corresponding to each candidate torque combination.

[0117] Optionally, the battery consumption determination module 370 is specifically used to: for each candidate torque combination, subtract the power consumption of the candidate drive motor corresponding to the candidate torque combination from the power generation of the candidate generator motor to obtain the power consumption of the candidate battery corresponding to the candidate torque combination.

[0118] Optionally, the target torque determination module 380 is specifically used to: determine the penalty energy value corresponding to each candidate torque combination based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination; compare the penalty energy values ​​corresponding to each candidate torque combination, and determine the target torque combination under the current operating condition based on the comparison results.

[0119] The hybrid vehicle power distribution device provided in the embodiments of the present invention can execute the hybrid vehicle power distribution method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0120] Figure 7A schematic diagram of an electronic device 12 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as desktop computers, workbenches, servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0121] like Figure 7 As shown, the electronic device 12 is represented in the form of a general-purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, system memory 28, and bus 18 connecting different system components (including system memory 28 and processing unit 16).

[0122] Bus 18 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. For example, these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0123] Electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0124] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (… Figure 7 Not shown; usually referred to as a "hard drive"). Although Figure 7Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. System memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0125] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 42 typically perform the functions and / or methods described in the embodiments of the present invention.

[0126] Electronic device 12 can also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with electronic device 12, and / or with any device that enables electronic device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 22. Furthermore, electronic device 12 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with other modules of electronic device 12 via bus 18. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0127] Processing unit 16 executes various functional applications and data processing by running programs stored in system memory 28, such as implementing the steps of a power distribution method for a hybrid vehicle provided in this embodiment, the method including:

[0128] Based on the universal characteristic curve of the engine, the first variation curve between engine torque, speed and fuel consumption is determined.

[0129] Based on the universal characteristic curve of the motor, a second variation curve is determined between the motor's torque, speed, and efficiency.

[0130] Based on the current engine speed, determine the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor;

[0131] Based on the preset torque interval, the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor are discretized to determine multiple possible torque combinations among the candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0132] Based on the vehicle's required torque under the current operating conditions and each candidate torque combination, determine the candidate torque combinations that meet the preset conditions;

[0133] Based on the candidate torque combinations, the first variation curve, and the second variation curve, determine the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination.

[0134] Based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor, determine the power consumption of the candidate battery corresponding to each candidate torque combination;

[0135] Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, the target torque combination under the current operating condition is determined.

[0136] Of course, those skilled in the art will understand that the processor can also implement the technical solution of the power distribution method for hybrid vehicles provided in any embodiment of the present invention.

[0137] This embodiment provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the program implements the power distribution method steps of a hybrid vehicle as provided in any embodiment of the present invention. The method includes:

[0138] Based on the universal characteristic curve of the engine, the first variation curve between engine torque, speed and fuel consumption is determined.

[0139] Based on the universal characteristic curve of the motor, a second variation curve is determined between the motor's torque, speed, and efficiency.

[0140] Based on the current engine speed, determine the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor;

[0141] Based on the preset torque interval, the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor are discretized to determine multiple possible torque combinations among the candidate engine torque, candidate generator motor torque, and candidate drive motor torque.

[0142] Based on the vehicle's required torque under the current operating conditions and each candidate torque combination, determine the candidate torque combinations that meet the preset conditions;

[0143] Based on the candidate torque combinations, the first variation curve, and the second variation curve, determine the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination.

[0144] Based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor, determine the power consumption of the candidate battery corresponding to each candidate torque combination;

[0145] Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, the target torque combination under the current operating condition is determined.

[0146] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0147] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0148] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0149] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0150] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computing device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0151] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A power distribution method for a hybrid vehicle, characterized in that, include: Based on the universal characteristic curve of the engine, the first variation curve between engine torque, speed and fuel consumption is determined. Based on the universal characteristic curve of the motor, a second variation curve is determined between the motor's torque, speed, and efficiency. Based on the current engine speed, determine the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor; Based on the preset torque interval, the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor are discretized to determine multiple possible torque combinations among the candidate engine torque, candidate generator motor torque, and candidate drive motor torque. Based on the vehicle's required torque under the current operating conditions and each candidate torque combination, determine the candidate torque combinations that meet the preset conditions; Based on the candidate torque combinations, the first variation curve, and the second variation curve, determine the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination. Based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor, determine the power consumption of the candidate battery corresponding to each candidate torque combination; Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, the target torque combination under the current operating condition is determined. The process of determining candidate torque combinations that meet preset conditions based on the vehicle's required torque under current operating conditions and each candidate torque combination includes: Based on the candidate torque combination, the candidate engine torque corresponding to the candidate torque combination is added to the candidate drive motor torque to obtain the first torque; Based on the candidate generator torque corresponding to the combination of the first torque and the candidate torque, the first torque and the candidate generator torque are subtracted to obtain the second torque; The required torque and the second torque under the current operating conditions are compared, and candidate torque combinations are determined based on the comparison results. The process of determining the target torque combination under the current operating condition based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination includes: Based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination, determine the penalty energy value corresponding to each candidate torque combination. The penalty energy values ​​corresponding to each candidate torque combination are compared, and the target torque combination under the current operating condition is determined based on the comparison results.

2. The method according to claim 1, characterized in that, The process of determining the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor based on the current engine speed includes: Determine the engine's current maximum torque based on the current engine speed; Based on the configuration relationship between the engine, generator motor and drive motor and the current engine speed, determine the current generator motor speed and the current drive motor speed; Based on the current generator speed and the current drive motor speed, determine the current maximum torque of the generator and the current maximum torque of the drive motor. Based on the current maximum torque of the engine, the current maximum torque of the generator, and the current maximum torque of the drive motor, the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor are obtained.

3. The method according to claim 1, characterized in that, The process involves discretizing the current maximum torque range of the engine, the current maximum torque range of the generator, and the current maximum torque range of the drive motor based on preset torque intervals, and determining multiple candidate torque combinations among the candidate engine torque, candidate generator torque, and candidate drive motor torque, including: Based on the preset torque interval, the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor are discretized to determine multiple candidate engine torques, multiple candidate generator motor torques, and multiple candidate drive motor torques. Multiple candidate engine torques, multiple candidate generator torques, and multiple candidate drive motor torques are arbitrarily combined to determine multiple candidate torque combinations that include one candidate engine torque, one candidate generator torque, and one candidate drive motor torque.

4. The method according to claim 1, characterized in that, The step of determining the candidate engine fuel consumption, candidate generator power generation, and candidate drive motor power consumption corresponding to each candidate torque combination based on the candidate torque combination, the first variation curve, and the second variation curve includes: Based on the candidate engine torque and the first variation curve corresponding to each candidate torque combination, determine the candidate engine fuel consumption corresponding to each candidate torque combination. Based on the candidate generator torque and the second variation curve corresponding to each candidate torque combination, the generator power of the candidate generator corresponding to each candidate torque combination is determined. Based on the candidate drive motor torque and the second variation curve corresponding to each candidate torque combination, the power consumption of the candidate drive motor corresponding to each candidate torque combination is determined.

5. The method according to claim 1, characterized in that, The step of determining the candidate battery power consumption corresponding to each candidate torque combination based on the power generation of the candidate generator motor and the power consumption of the candidate drive motor includes: For each candidate torque combination, the power consumption of the candidate drive motor corresponding to the candidate torque combination is subtracted from the power generation of the candidate generator motor to obtain the power consumption of the candidate battery corresponding to the candidate torque combination.

6. A power distribution device for a hybrid vehicle, the device being used to perform the power distribution method for a hybrid vehicle as described in claim 1, characterized in that, include: The first curve determination module is used to determine the first variation curve between engine torque, speed and fuel consumption based on the engine's universal characteristic curve. The second curve determination module is used to determine the second variation curve between the motor's torque, speed and efficiency based on the motor's universal characteristic curve. The maximum torque determination module is used to determine the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on the current engine speed. The candidate torque combination determination module is used to discretize the current maximum torque range of the engine, the current maximum torque range of the generator motor, and the current maximum torque range of the drive motor based on a preset torque interval, and determine multiple candidate torque combinations among candidate engine torque, candidate generator motor torque, and candidate drive motor torque. The candidate torque combination determination module is used to determine the candidate torque combination that meets the preset conditions based on the vehicle's required torque under the current operating conditions and each candidate torque combination. The candidate power determination module is used to determine the candidate engine fuel consumption, candidate generator power generation and candidate drive motor power consumption corresponding to each candidate torque combination based on the candidate torque combination, the first change curve and the second change curve. The battery consumption determination module is used to determine the candidate battery consumption power corresponding to each candidate torque combination based on the power generation power of the candidate generator motor and the power consumption power of the candidate drive motor. The target torque determination module is used to determine the target torque combination under the current operating conditions based on the candidate engine fuel consumption and candidate battery power consumption corresponding to each candidate torque combination.

7. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the power distribution method for the hybrid vehicle according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the power distribution method for the hybrid vehicle as described in any one of claims 1-5.

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