Hybrid vehicle control method, system, hybrid vehicle and storage medium

Abstract

The embodiments of the present application disclose a control method, system, hybrid vehicle and storage medium for a hybrid vehicle, and relate to the field of vehicle control technology. The method comprises: obtaining target operating parameters of the vehicle when the architecture of the hybrid vehicle is a target architecture, wherein the target architecture is associated with multiple motors in the hybrid vehicle, and different motors among the multiple motors are located at different positions of the hybrid vehicle; determining a first motor that matches the target operating parameters from the multiple motors; and controlling the first motor to perform a target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation, and by selecting the first motor with high energy efficiency, the operating energy consumption of the hybrid vehicle can be reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a control method and system for a hybrid vehicle, a hybrid vehicle, and a storage medium. Background Art

[0002] In hybrid vehicles, motor positions can be divided into P0 to P4, where P represents the motor position. Motors in different positions play different roles, and the roles they play are directly related to the vehicle's energy consumption and power. In hybrid vehicles with multi-motor architectures, specific motors are often manually selected to complete corresponding tasks, which can easily lead to high operating energy consumption of hybrid vehicles in some cases. Summary of the invention

[0003] In view of this, one of the objects of the present application is to provide a control method and system for a hybrid vehicle, a hybrid vehicle and a computer-readable storage medium, which can reduce the operating energy consumption of the hybrid vehicle.

[0004] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a control method for a hybrid vehicle, comprising:

[0006] When the architecture of the hybrid vehicle is a target architecture, obtaining a target operating parameter of the vehicle, wherein the target architecture is associated with a plurality of motors in the hybrid vehicle, and different motors of the plurality of motors are located at different positions of the hybrid vehicle;

[0007] Determining, from among the plurality of motors, a first motor that matches the target operating parameters;

[0008] The first motor is controlled to perform a target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation; the second motor is a motor other than the first motor among the multiple motors.

[0009] In a possible implementation manner, before determining, from among the plurality of motors, a first motor matching the target operating parameters, the method further includes:

[0010] Determine the target operating mode of the hybrid vehicle. The hybrid vehicle has multiple operating modes. In different operating modes, multiple motors perform different operations.

[0011] Determining a first motor matching a target operating parameter from among a plurality of motors includes:

[0012] Determining, from a plurality of motors, a first motor that matches a target operating mode and target operating parameters;

[0013] The target operation is associated with the target operating mode.

[0014] In a possible implementation manner, determining a first motor that matches a target operating mode and target operating parameters from a plurality of motors includes:

[0015] According to a preset mapping relationship associated with the target operating mode, determining that a motor having a preset mapping relationship with the target operating parameter is a first motor;

[0016] The preset mapping relationship is used to characterize the relationship between the target operating parameter and each of the multiple motors.

[0017] In a possible implementation, a plurality of relationship mapping tables are configured in the hybrid vehicle, the plurality of relationship mapping tables correspond one-to-one to the plurality of operating modes, and each relationship mapping table is used to store a preset mapping relationship associated with the corresponding operating mode;

[0018] According to a preset mapping relationship associated with the target operating mode, determining that a motor having a mapping relationship with the target operating parameter is a first motor includes:

[0019] Acquire a target relationship mapping table corresponding to a target operation mode from a plurality of relationship mapping tables;

[0020] From the target relationship mapping table, a first motor having a preset mapping relationship with the target operating parameter is determined.

[0021] In a possible implementation, the target relationship mapping table includes a plurality of relationship mapping sub-tables, and the operating parameters in different relationship mapping sub-tables are in different parameter ranges;

[0022] Determining a first motor having a preset mapping relationship with a target operating parameter from a target relationship mapping table includes:

[0023] Determine the target parameter range within which the target operating parameter lies;

[0024] Determine the relationship mapping sub-table corresponding to the target parameter range in the plurality of relationship mapping sub-tables as the target mapping sub-table;

[0025] From the target mapping sub-table, a first motor having a preset mapping relationship with the target operating parameter is determined.

[0026] In a possible implementation, determining a target operating mode of a hybrid vehicle includes:

[0027] Obtaining a preset ideal acceleration curve of the hybrid vehicle and an actual acceleration of the hybrid vehicle;

[0028] The target operating mode is determined based on the preset ideal acceleration curve and the actual acceleration.

[0029] In a possible implementation, the target operating mode includes a motor assist mode and a driving charging mode. The target operating mode is determined according to a preset ideal acceleration curve and an actual acceleration, including:

[0030] Compare the ideal acceleration in the preset ideal acceleration curve with the actual acceleration;

[0031] When the actual acceleration is greater than the ideal acceleration, the target operation mode is determined to be the motor assist mode;

[0032] When the actual acceleration is less than the ideal acceleration, the target operating mode is determined to be the driving charging mode.

[0033] In one possible implementation:

[0034] When the target operation mode is the motor assist mode, the target operation is used to control the first motor to provide driving force for the hybrid vehicle;

[0035] When the target operating mode is the driving charging mode, the target operation is used to control the first motor to charge the hybrid vehicle.

[0036] In a second aspect, an embodiment of the present application provides a control system for a hybrid vehicle, the system comprising:

[0037] A first acquisition module is used to acquire a target operating parameter of the vehicle when the architecture of the hybrid vehicle is a target architecture, wherein the target architecture is associated with a plurality of motors in the hybrid vehicle, and different motors of the plurality of motors are located at different positions of the hybrid vehicle;

[0038] A second determination module is used to determine a first motor matching the target operating parameters from among the multiple motors;

[0039] A control module is used to control the first motor to perform a target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation; the second motor is a motor other than the first motor among the multiple motors.

[0040] In a third aspect, an embodiment of the present application provides a hybrid vehicle, the hybrid vehicle comprising a memory and a processor, the memory storing a computer program, and when the computer program is executed by the processor, the control method of the hybrid vehicle provided in the first aspect is implemented.

[0041] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by one or more processors, the control method of the hybrid vehicle provided in the first aspect is implemented.

[0042] The control method of a hybrid vehicle provided in an embodiment of the present application can obtain the target operating parameters of the vehicle when the architecture of the hybrid vehicle is a target architecture, wherein the target architecture is associated with multiple motors in the hybrid vehicle, and different motors among the multiple motors are located at different positions of the hybrid vehicle. Then, a first motor matching the target operating parameters is determined from the multiple motors. Then, the first motor is controlled to perform the target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation. By selecting the first motor with high energy efficiency, the operating energy consumption of the hybrid vehicle can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. It should be understood that the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A flow chart of a hybrid vehicle control method provided in an embodiment of the present application;

[0045] Figure 2 A preset ideal acceleration curve diagram included in a hybrid vehicle control method provided in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of an optimal fuel operating curve involved in a hybrid vehicle control method provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of functional modules of a control system of a hybrid vehicle provided in an embodiment of the present application;

[0048] Figure 5 An internal structure diagram of a hybrid vehicle provided in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] A control system 400 of a hybrid vehicle, a first acquisition module 410 , a first determination module 420 , and a control module 430 . DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0054] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0055] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0056] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0057] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0058] To facilitate a better understanding of the solutions of the embodiments of the present application, the relevant technologies that may be involved in the embodiments of the present application are first introduced below.

[0059] Hybrid vehicles are also called hybrid electric vehicles, which refer to vehicles whose drive system is composed of two or more single drive systems that can operate simultaneously. At present, hybrid vehicles generally refer to hybrid electric vehicles (HEV), that is, vehicles that use traditional internal combustion engines (diesel engines or gasoline engines) and electric motors as power sources.

[0060] In a hybrid vehicle (or hybrid power vehicle), the architecture of the hybrid vehicle can be divided into the P0-P4 architecture or the Ps architecture described in the background technology according to the different positions of the motors, wherein the Ps architecture can also be called the P2.5 architecture.

[0061] The P0 architecture motor is installed at the front end of the engine and is connected to the engine crankshaft through a belt. Vehicles equipped with the P0 motor can drive the mechanical compressor of the air conditioner when the engine is stopped at a traffic light, thereby realizing engine start and stop, brake energy recovery and power generation, and auxiliary power output.

[0062] The P1 architecture motor is located at the rear end of the engine crankshaft. It replaces the traditional flywheel. In addition to inheriting the flywheel's function of storing energy and inertia outside the engine's power stroke, the P1 motor has similar functions to the P0 motor and also supports engine start and stop, brake energy recovery power generation, and auxiliary power output.

[0063] The P2 architecture's motor is located between the engine and the gearbox. Because it does not have to be integrated into the engine housing like the P1 motor, the layout can be more flexible.

[0064] The P3 architecture's motor is located at the output end of the gearbox, and its pure electric drive and kinetic energy recovery are highly efficient, and the rapid acceleration effect is very direct. In terms of function, the P3 motor can achieve brake energy recovery and pure electric drive of the vehicle. Because the motor cannot be integrated with the gearbox or engine and needs to occupy additional volume, the P3 architecture is more suitable for rear-wheel drive vehicles, with ample space for layout.

[0065] The motor and engine of the P4 architecture do not drive the same shaft, thus helping the vehicle achieve four-wheel drive.

[0066] The basis of the Ps architecture is the dual-clutch transmission, which uses the characteristics of the dual-clutch transmission having two input shafts to integrate the motor into one of the shafts, enabling pure electric drive vehicles and brake energy recovery.

[0067] Generally speaking, in hybrid vehicles of different architectures, specific motors are often set manually to complete corresponding tasks, which in some cases can easily lead to high energy consumption in the operation of the hybrid vehicles.

[0068] Taking hybrid vehicles with P1P2 or P1P3 architecture as an example, hybrid vehicles often operate in corresponding operating modes according to pre-selected motors in different operating modes. However, research has found that in the corresponding operating modes, the energy efficiency of the pre-selected motors is not the highest, and there is a problem of high energy consumption in hybrid vehicle operation.

[0069] In order to solve the above problems, the embodiments of the present application provide a control method and system of a hybrid vehicle, a hybrid vehicle and a computer-readable storage medium. The control method of the hybrid vehicle provided by the embodiments of the present application is first introduced below.

[0070] See also Figure 1 , Figure 1 This is a flow chart of a control method for a hybrid vehicle provided in an embodiment of the present application. The control method for a hybrid vehicle can be applied to a hybrid vehicle. The control method for a hybrid vehicle specifically includes the following steps:

[0071] Step 110, when the architecture of the hybrid vehicle is a target architecture, obtaining target operating parameters of the vehicle, wherein the target architecture is associated with a plurality of motors in the hybrid vehicle, and different motors of the plurality of motors are located at different positions of the hybrid vehicle;

[0072] Step 120, determining a first motor matching the target operating parameters from among the multiple motors;

[0073] Step 130 , controlling the first motor to perform a target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation; the second motor is a motor other than the first motor among the multiple motors.

[0074] The control method of a hybrid vehicle provided in an embodiment of the present application can obtain the target operating parameters of the vehicle when the architecture of the hybrid vehicle is a target architecture, wherein the target architecture is associated with multiple motors in the hybrid vehicle, and different motors among the multiple motors are located at different positions of the hybrid vehicle. Then, a first motor matching the target operating parameters is determined from the multiple motors. Then, the first motor is controlled to perform the target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation. By selecting the first motor with high energy efficiency, the operating energy consumption of the hybrid vehicle can be reduced.

[0075] The following will be Figure 1 Each step of the method is described in detail.

[0076] In step 110, the target architecture is associated with multiple motors in the hybrid vehicle, which can be understood as the hybrid vehicle under the target architecture includes at least two motors. For example, the hybrid vehicle in the P1P2 architecture in the above example includes the P1 motor and the P2 motor, and the hybrid vehicle in the P1P3 architecture includes the P1 motor and the P3 motor. Depending on the hybrid vehicle model, the target architecture may also include the P0P2 architecture, the P0P3 architecture, and the P1P4 architecture.

[0077] In some embodiments, depending on the type of hybrid vehicle, the target architecture may also include a P1P2P4 architecture, that is, the hybrid vehicle under this architecture includes a P1 motor, a P2 motor, and a P3 motor.

[0078] It can be understood that the control method of the hybrid vehicle provided in the embodiment of the present application can be applicable to a hybrid vehicle with a target architecture composed of at least two different motors.

[0079] The target operating parameters are operating parameters of the hybrid vehicle under the target architecture, and may include one or more of the driving speed of the hybrid vehicle, the engine speed of the hybrid vehicle, and the engine torque of the hybrid vehicle. The corresponding operating parameters may be selected as the target operating parameters according to actual needs.

[0080] Considering that hybrid vehicles are usually equipped with a variety of sensors and electronic control units (ECUs) that can monitor various parameters of the hybrid vehicles, the target operating parameters in this embodiment can be obtained through the various sensors and ECUs equipped in the hybrid vehicles.

[0081] In some embodiments, the target operating parameter may also be obtained through vehicle-mounted electronic equipment, for example, the driving speed of the hybrid vehicle may be obtained through a driving recorder installed in the hybrid vehicle.

[0082] If the ECU in the above embodiment is regarded as a built-in monitoring device of the hybrid vehicle, and the driving recorder is regarded as an external monitoring device of the hybrid vehicle, in some embodiments, the target operating parameters can be determined based on the built-in monitoring device and the external monitoring device, which can further improve the accuracy and reliability of the determined target operating parameters.

[0083] Taking the example of determining the target operating parameter as the driving speed of a hybrid vehicle, the driving speed of the hybrid vehicle includes the average speed of a first driving speed and a second driving speed, wherein the first driving speed is the driving speed collected by the built-in monitoring device, and the second driving speed is the driving speed collected by the external monitoring device.

[0084] In step 120 , the hybrid vehicle may determine a first motor from the plurality of motors based on the determined target operating parameters, and the energy efficiency of the first motor in performing the target operation is higher than the energy efficiency of a second motor other than the first motor in performing the target operation.

[0085] It should be noted that, when the above-mentioned multiple motors include three or more motors, the above-mentioned second motor may be all the motors among the multiple motors except the first motor, that is, at this time, the first motor is the motor with the highest energy efficiency in performing the target operation among the multiple motors; or, the above-mentioned second motor may also be some of the motors among the multiple motors except the first motor, that is, at this time, the first motor is not the motor with the lowest energy efficiency in performing the target operation among the multiple motors.

[0086] In step 130 , the hybrid vehicle may control the first motor to perform a target operation.

[0087] The target operation is any operation that can be performed by the motor of the hybrid vehicle. For example, the target operation may be to provide driving force for the hybrid vehicle, or may be to charge the hybrid vehicle.

[0088] For example, when executing the target operation, the energy efficiency of the first motor may be higher than the energy efficiency of the other motors among the multiple motors except the first motor. This embodiment can reduce the energy consumption of the hybrid vehicle by selecting the first motor with high energy efficiency to execute the corresponding target operation.

[0089] In a possible implementation manner, before determining, from among the plurality of motors, a first motor matching the target operating parameters, the method further includes:

[0090] Determine the target operating mode of the hybrid vehicle. The hybrid vehicle has multiple operating modes. In different operating modes, multiple motors perform different operations.

[0091] Determining a first motor matching a target operating parameter from among a plurality of motors includes:

[0092] Determining, from a plurality of motors, a first motor that matches a target operating mode and target operating parameters;

[0093] The target operation is associated with the target operating mode.

[0094] This embodiment determines the target operating mode of the hybrid vehicle, and then determines the first motor based on the target operating mode and the target operating parameters. In other words, this embodiment can select the corresponding first motor according to the target operating parameters in different operating modes of the hybrid vehicle, fully considers the actual operating conditions of the hybrid vehicle in different operating modes, further improves the accuracy and reliability of determining the first motor, and can also further improve the reliability of reducing the energy consumption of the hybrid vehicle.

[0095] Specifically, the target operation is associated with the target operating mode, and it can also be understood that the operation performed by controlling the first motor to be executed by the hybrid vehicle in the target operating mode is the target operation.

[0096] It should be noted that, in the case where the target operating parameters of a hybrid vehicle are the same but the target operating modes are different, the first motor determined may be different. For example, for a hybrid vehicle with a target architecture of P1P3, the target operating parameter types and parameter values ​​at time A and time B are the same, but the target operating modes of the hybrid vehicle are different at time A and time B. It is possible that although the target operating parameters are the same, the P1 motor is determined as the first motor at time A, and the P3 motor is determined as the first motor at time B.

[0097] See also Figure 2 , Figure 2 A preset ideal acceleration curve diagram included in a control method for a hybrid vehicle provided in an embodiment of the present application. In a possible implementation, determining a target operating mode of the hybrid vehicle includes:

[0098] Obtaining a preset ideal acceleration curve of the hybrid vehicle and an actual acceleration of the hybrid vehicle;

[0099] The target operating mode is determined based on the preset ideal acceleration curve and the actual acceleration.

[0100] This embodiment can quickly and accurately determine the target operating mode of the hybrid vehicle by presetting the ideal acceleration curve.

[0101] Specifically, the horizontal axis of the preset ideal acceleration curve is the driving speed of the hybrid vehicle (km / h), and the vertical axis of the preset ideal acceleration curve is the acceleration of the hybrid vehicle (m / s 2 ). Through actual testing of hybrid vehicles, it is found that there is an ideal acceleration curve in the preset ideal acceleration curve. When the actual acceleration curve of the hybrid vehicle is infinitely close to or coincides with the ideal acceleration curve, the fuel economy of the hybrid vehicle's engine is the highest. Or it can be understood that when the actual acceleration curve of the hybrid vehicle is infinitely close to or coincides with the ideal acceleration curve, the fuel consumption of the hybrid vehicle's engine is the lowest.

[0102] Fuel economy refers to the ability of a hybrid vehicle to travel economically with minimal fuel consumption while ensuring the power of the hybrid vehicle. Fuel economy is usually expressed as the mass of fuel consumed per unit of power, called specific fuel consumption (SFC).

[0103] See also Figure 3 , Figure 3A schematic diagram of an optimal fuel operating curve involved in a control method for a hybrid vehicle provided in an embodiment of the present application. In some embodiments, determining a target operating mode of the hybrid vehicle further includes:

[0104] Obtaining the optimal fuel operating line (OOL) of the engine of the hybrid vehicle and the engine torque of the hybrid vehicle;

[0105] Determine the target operating mode based on the optimal fuel operating curve and engine torque.

[0106] The hybrid vehicle can obtain the universal characteristic data of its engine, and calculate and form OOL based on the universal characteristic data. The horizontal axis of OOL represents the engine speed, and the vertical axis of OOL represents the engine torque.

[0107] In a possible implementation, the target operating mode includes a motor assist mode and a driving charging mode. The target operating mode is determined according to a preset ideal acceleration curve and an actual acceleration, including:

[0108] Compare the ideal acceleration in the preset ideal acceleration curve with the actual acceleration;

[0109] When the actual acceleration is greater than the ideal acceleration, the target operation mode is determined to be the motor assist mode;

[0110] When the actual acceleration is less than the ideal acceleration, the target operating mode is determined to be the driving charging mode.

[0111] This embodiment can accurately determine whether the target operating mode is the motor assist mode or the driving charging mode by presetting the ideal acceleration curve and the actual acceleration of the hybrid vehicle.

[0112] It should be understood that the motor assist mode and the driving charging mode in this embodiment are only two manifestations of the target operating mode, and the target operating mode of the hybrid vehicle may also be other forms of operating modes, which are not exemplified one by one here.

[0113] Take the case where the actual acceleration is greater than the ideal acceleration and the target operation mode is determined to be the motor assist mode as an example. Specifically, when the hybrid vehicle is traveling at a speed of 50 km / h, the corresponding actual acceleration is 0.7 m / s 2 ,according to Figure 2 From the curve in the figure, we can see that the ideal acceleration corresponding to a driving speed of 50km / h is between 0.6m / s 2 and 0.7m / s 2 Obviously, the actual acceleration of the hybrid vehicle is greater than the ideal acceleration, and the hybrid vehicle can determine its target operating mode as the motor assist mode.

[0114] Among them, in the case where the actual acceleration is less than the ideal acceleration, the process of determining the target operating mode as the driving charging mode is similar to the process of determining the target operating mode as the motor assist mode. Please refer to the introduction of determining the target operating mode as the motor assist mode in the above example, which will not be repeated here.

[0115] In some embodiments, determining the target operating mode further includes:

[0116] Determining a target torque in an optimal operating curve of the engine;

[0117] When the engine torque is greater than the target torque, determining the target operating mode to be the motor assist mode;

[0118] In the case where it is detected that the engine torque is less than the target torque, the target operation mode is determined to be the driving charging mode.

[0119] Specifically, when the engine torque is greater than the target torque, the target operating mode is determined to be the motor assist mode, which is similar to the determination process of determining the target operating mode to be the motor assist mode when the actual acceleration is greater than the ideal acceleration. The only difference is that the data compared in this embodiment are the engine torque and the target torque. For the specific implementation process, please refer to the determination process of determining the target operating mode to be the motor assist mode when the actual acceleration is greater than the ideal acceleration in the above embodiment, which will not be repeated here.

[0120] In one possible implementation:

[0121] When the target operation mode is the motor assist mode, the target operation is used to control the first motor to provide driving force for the hybrid vehicle;

[0122] When the target operating mode is the driving charging mode, the target operation is used to control the first motor to charge the hybrid vehicle.

[0123] This embodiment can accurately control the first motor to perform different operations in different working modes of the hybrid vehicle, thereby reducing the operating energy consumption of the hybrid vehicle.

[0124] The target operation may be associated with the control instruction. Specifically, when the target operating mode is the motor assist mode, the hybrid vehicle may generate a first control instruction, and the target operation associated with the first control instruction may be used to control the first motor to provide driving force for the hybrid vehicle. Correspondingly, when the target operating mode is the driving charging mode, the hybrid vehicle may generate a second control instruction, and the target operation associated with the second control instruction may be used to control the first motor to charge the hybrid vehicle.

[0125] In a possible implementation manner, determining a first motor that matches a target operating mode and target operating parameters from a plurality of motors includes:

[0126] According to a preset mapping relationship associated with the target operating mode, determining that a motor having a preset mapping relationship with the target operating parameter is a first motor;

[0127] The preset mapping relationship is used to characterize the relationship between the target operating parameter and each of the multiple motors.

[0128] This embodiment uses a preset mapping relationship to select a first motor that reduces the operating energy consumption of the hybrid vehicle under different target operating modes of the hybrid vehicle, and can improve the efficiency of the first motor based on the preset mapping relationship, so that the first motor can be operated in the target operating mode in a timely manner, thereby further reducing the operating energy consumption of the hybrid vehicle.

[0129] The preset mapping relationship may be determined after multiple tests on a hybrid vehicle based on a target architecture, and is a mapping relationship between a target operating parameter of the hybrid vehicle and the motor.

[0130] In some embodiments, the target operating parameters may include at least two parameters, and the preset mapping relationship includes a mapping relationship between each target operating parameter and each motor.

[0131] In a possible implementation, a plurality of relationship mapping tables are configured in the hybrid vehicle, the plurality of relationship mapping tables correspond one-to-one to the plurality of operating modes, and each relationship mapping table is used to store a preset mapping relationship associated with the corresponding operating mode;

[0132] According to a preset mapping relationship associated with the target operating mode, determining that a motor having a mapping relationship with the target operating parameter is a first motor includes:

[0133] Acquire a target relationship mapping table corresponding to a target operation mode from a plurality of relationship mapping tables;

[0134] From the target relationship mapping table, a first motor having a preset mapping relationship with the target operating parameter is determined.

[0135] This implementation stores a preset mapping relationship in a relationship mapping table, so that the hybrid vehicle determines the first motor by looking up the table, further improving the efficiency of determining the first motor.

[0136] Taking a hybrid vehicle with a target architecture of P1P3 as an example, the target operating parameters of the hybrid vehicle include at least one of the driving speed of the hybrid vehicle and the engine speed, and an example of the engine torque. After multiple tests on the hybrid vehicle based on the target architecture, a preset mapping relationship is determined and stored in a relationship mapping table, forming the following Table 1:

[0137]

[0138] Among them, V1 represents the driving speed of the hybrid vehicle (km / h), V2 represents the engine speed of the hybrid vehicle (r / min), and T represents the engine speed of the hybrid vehicle (N·m).

[0139] According to Table 1, the target operating parameters in Table 1 include the hybrid vehicle's driving speed of 40km / h to 120km / h, or the hybrid vehicle's engine speed of 1000r / min to 3000r / min, and the hybrid vehicle's engine torque of 0N·m to 15N·m, and the P1 motor can be selected as the first motor.

[0140] It should be noted that the first motor can be determined by traversing Table 1 by determining any one of the target operating parameters V1 and V2 and determining the target operating parameter T. To improve the convenience of determining the first motor, Table 1 includes the target operating parameters V1, V2 and T.

[0141] In some embodiments, Table 1 may include only the target operating parameters V1 and T.

[0142] In some embodiments, Table 1 may also include only the target operating parameters V2 and T.

[0143] Considering that the running speed V1 of the hybrid vehicle is 45 km / h and the engine torque of the hybrid vehicle is 3 N·m, the corresponding first motor cannot be determined in Table 1.

[0144] In some embodiments, taking the driving speed V1 of a hybrid vehicle as an example, if only tens such as 40km / h, 50km / h, 60km / h, etc. are tested in the early multiple tests, it is impossible to obtain the first motor corresponding to the driving speed V1 of 45km / h. In this case, interpolation method can be used to obtain values ​​such as 41km / h, 42km / h, 43, 44km / h, 45km / h and their corresponding first motors.

[0145] In some embodiments, without considering the test cycle, each value such as V1, V2 and T can be tested in multiple preliminary tests, so there is no need to obtain values ​​such as 41km / h, 42km / h, 43, 44km / h, 45km / h and their corresponding first motor through interpolation.

[0146] Considering that the first motor is determined by only one target relationship mapping table, the hybrid vehicle needs to traverse the target relationship mapping table, which contains a lot of data, such as determining the first motor by target operating parameters V1 and T, where V1=1, 2, 3, ..., 120 km / h, T=0, 1, 2, ..., 50 N·m. The hybrid vehicle needs to traverse the target relationship mapping table row by row and column by column to determine that the efficiency of the first motor is low.

[0147] In some embodiments, multiple relationship mapping tables may also be stored in a server, and the server may establish communication with multiple hybrid vehicles at the same time, so that the relationship mapping tables can be updated conveniently and quickly. The server may be a local server or a cloud server.

[0148] In a possible implementation, the target relationship mapping table includes a plurality of relationship mapping sub-tables, and the operating parameters in different relationship mapping sub-tables are in different parameter ranges;

[0149] Determining a first motor having a preset mapping relationship with a target operating parameter from a target relationship mapping table includes:

[0150] Determine the target parameter range within which the target operating parameter lies;

[0151] Determine the relationship mapping sub-table corresponding to the target parameter range in the plurality of relationship mapping sub-tables as the target mapping sub-table;

[0152] From the target mapping sub-table, a first motor having a preset mapping relationship with the target operating parameter is determined.

[0153] The target relationship mapping table in this embodiment includes multiple relationship mapping sub-tables. In the process of determining the first motor, it is not necessary to traverse the entire table. Instead, it is only necessary to determine the target mapping sub-table from each relationship mapping sub-table, and then determine the first motor from the target mapping sub-table, which can further improve the efficiency of determining the first motor.

[0154] Specifically, the operating parameters in different relationship mapping sub-tables are in different parameter ranges. In other words, it can be understood that the target relationship mapping table is vertically or horizontally segmented to obtain multiple relationship mapping sub-tables, and the specific segmentation method can be determined according to actual conditions.

[0155] Among them, taking V1 in Table 1 as an example, the target parameter range is 40km / h to 120km / h. Taking T in Table 1 as an example, the target parameter range is 0N·m to 15N·m.

[0156] In some embodiments, the target relationship mapping table is divided into multiple relationship mapping sub-tables. In the above embodiments, the preset mapping relationship can be determined after multiple experiments, and when the preset mapping relationship is stored in the target relationship mapping table, the target relationship mapping table is divided into multiple relationship mapping sub-tables.

[0157] In some embodiments, the target relationship mapping table is segmented to obtain a plurality of relationship mapping sub-tables. Alternatively, after the hybrid vehicle determines the target relationship mapping table, the target relationship mapping table is segmented by the hybrid vehicle, and then the hybrid vehicle determines the target mapping sub-table from the plurality of relationship mapping sub-tables obtained after the segmentation, and finally the hybrid vehicle determines the first motor from the target mapping sub-table.

[0158] In some embodiments, the target relationship mapping table is segmented to obtain a plurality of relationship mapping sub-tables, including equally segmenting the target relationship mapping table to obtain a plurality of relationship mapping sub-tables.

[0159] For example, Table 2, Table 3, and Table 4 are obtained by vertically dividing Table 1 as follows:

[0160] ,

[0161] ,

[0162]

[0163] For example, if the driving speed V1 of the hybrid vehicle is 105 km / h and the engine torque of the hybrid vehicle is 0 N·m:

[0164] Traversing Table 1 to determine the corresponding first motor requires 66 horizontal queries and 1 vertical query, for a total of 67 queries.

[0165] After Table 1 is split into Table 2, Table 3 and Table 4, we have:

[0166] The parameter range of V1 in Table 1 is from 40km / h to 120km / h;

[0167] The parameter range of V1 in Table 2 is from 70km / h to 90km / h;

[0168] The parameter range of V1 in Table 3 is 100km / h to 120km / h.

[0169] When traversing Table 2, Table 3 and Table 4, the hybrid vehicle only needs to traverse the parameter range of V1, that is, the hybrid vehicle has a first traversal process, that is, it only needs to traverse the first V1 and the last V1 of Table 2, Table 3 and Table 4. It is necessary to first query horizontally 6 times to determine that the target parameter range is the parameter range of V1 in Table 3, which is 100km / h to 120km / h.

[0170] Then the hybrid vehicle can use Table 3 as the target mapping subtable, that is, the hybrid vehicle has a second traversal process, which requires 6 horizontal queries and 1 vertical query. The hybrid vehicle traverses Table 2, Table 3, and Table 4, and completes the first traversal process and the second traversal process for a total of 13 queries, which is much less than the 67 queries required to traverse Table 1, and can quickly complete the traversal query and determine the first motor.

[0171] In some embodiments, a plurality of relationship mapping tables are configured in the hybrid vehicle, and the plurality of relationship mapping tables correspond one to one with the plurality of operating modes. Specifically, taking Table 1 as an example, if the plurality of operating modes include the motor assist mode, then T in Table 1 may be the assist torque, i.e., the torque of the engine in the assist state, and a relationship mapping table obtained through multiple tests may be formed separately. If the plurality of operating modes include the driving charging mode, then T in Table 1 may be the power generation torque, i.e., the torque of the engine in the power generation state, and a relationship mapping table obtained through multiple tests may be formed separately, which will not be shown one by one here.

[0172] In some embodiments, the assist torque and the generating torque may be determined by the driver's demand torque and the ideal engine torque corresponding to the curve in the OOL.

[0173] The assist torque is the difference between the driver's required torque and the ideal engine torque. The power generation torque is the difference between the ideal engine torque and the driver's required torque.

[0174] The driver demand torque is the torque required by the engine.

[0175] Corresponding to the above method embodiment, the present application embodiment also provides a control system for a hybrid vehicle, see Figure 4 , Figure 4 A schematic diagram of functional modules of a control system of a hybrid vehicle provided in an embodiment of the present application, wherein the control system 400 of the hybrid vehicle includes:

[0176] A first acquisition module 410 is configured to acquire a target operating parameter of the hybrid vehicle when the architecture of the hybrid vehicle is a target architecture, wherein the target architecture is associated with a plurality of motors in the hybrid vehicle, and different motors of the plurality of motors are located at different positions of the hybrid vehicle;

[0177] A first determination module 420 is used to determine a first motor matching the target operating parameters from among the multiple motors;

[0178] The control module 430 is used to control the first motor to perform the target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation; the second motor is a motor other than the first motor among the multiple motors.

[0179] In a possible implementation, the control system 400 of the hybrid vehicle further includes a second determination module, which is used to:

[0180] Determine the target operating mode of the hybrid vehicle. The hybrid vehicle has multiple operating modes. In different operating modes, multiple motors perform different operations.

[0181] The first determining module 420 is further configured to:

[0182] Determining, from a plurality of motors, a first motor that matches a target operating mode and target operating parameters;

[0183] The target operation is associated with the target operating mode.

[0184] In a possible implementation, the first determining module 420 includes:

[0185] a first determination submodule, configured to determine, according to a preset mapping relationship associated with the target operating mode, that a motor having a preset mapping relationship with the target operating parameter is a first motor;

[0186] The preset mapping relationship is used to characterize the relationship between the target operating parameter and each of the multiple motors.

[0187] In a possible implementation manner, the hybrid vehicle is configured with a plurality of relationship mapping tables, the plurality of relationship mapping tables correspond one-to-one to the plurality of operating modes, and each of the relationship mapping tables is used to store a preset mapping relationship associated with the corresponding operating mode;

[0188] The first determination submodule includes:

[0189] An acquiring unit, configured to acquire a target relationship mapping table corresponding to the target operation mode from the plurality of relationship mapping tables;

[0190] A determination unit is used to determine a first motor having a preset mapping relationship with the target operating parameter from the target relationship mapping table.

[0191] In a possible implementation manner, the target relationship mapping table includes a plurality of relationship mapping sub-tables, and the operating parameters in different relationship mapping sub-tables are in different parameter ranges;

[0192] Determines the unit, also used for:

[0193] Determining a target parameter range within which the target operating parameter lies;

[0194] Determine the relationship mapping sub-table corresponding to the target parameter range in the multiple relationship mapping sub-tables as the target mapping sub-table;

[0195] A first motor having a preset mapping relationship with the target operating parameter is determined from the target mapping sub-table.

[0196] In a possible implementation manner, the determining unit includes:

[0197] an acquisition subunit, configured to acquire a preset ideal acceleration curve of the hybrid vehicle and an actual acceleration of the hybrid vehicle;

[0198] The determination subunit is used to determine the target operation mode according to the preset ideal acceleration curve and the actual acceleration.

[0199] In a possible implementation manner, the target operating mode includes a motor assist mode and a driving charging mode, and the preset ideal acceleration curve and the actual acceleration are used;

[0200] Identify subunits. Also used for:

[0201] comparing the ideal acceleration in the preset ideal acceleration curve with the actual acceleration;

[0202] In a case where the actual acceleration is greater than the ideal acceleration, determining that the target operating mode is the motor assist mode;

[0203] In a case where the actual acceleration is less than the ideal acceleration, the target operating mode is determined to be the driving charging mode.

[0204] In a possible implementation manner, when the target operating mode is the motor assist mode, the target operation is used to control the first motor to provide driving force for the hybrid vehicle;

[0205] When the target operating mode is the driving charging mode, the target operation is used to control the first motor to charge the hybrid vehicle.

[0206] The control system of the hybrid vehicle provided in the embodiment of the present application can achieve the following Figure 1 The various processes implemented in the method embodiments can achieve similar or identical technical effects, and will not be described again here to avoid repetition.

[0207] The present application also provides a hybrid vehicle. Figure 5 , Figure 5An internal structure diagram of a hybrid vehicle provided in an embodiment of the present application. The hybrid vehicle includes a processor, a memory, and a network interface connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the hybrid vehicle stores an operating system and may also store a computer program, which, when executed by the processor, enables the processor to implement the control method applied to the hybrid vehicle in the above embodiment. The internal memory may also store a computer program, which, when executed by the processor, enables the processor to execute the control method for the hybrid vehicle. Those skilled in the art will appreciate that Figure 5 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the hybrid vehicle to which the solution of the present application is applied. A specific hybrid vehicle may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0208] The embodiment of the present application further discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the control method of the hybrid vehicle in the method embodiment is implemented.

[0209] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the embodiment of the control method of the hybrid vehicle as described above, and can achieve similar or identical technical effects. To avoid repetition, it will not be described here.

[0210] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0211] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

Claims

1. A control method for a hybrid vehicle, characterized in that: include: When the architecture of the hybrid vehicle is a target architecture, obtaining target operating parameters of the hybrid vehicle, wherein the target architecture is associated with a plurality of motors in the hybrid vehicle, and different motors of the plurality of motors are located at different positions of the hybrid vehicle; Acquiring a preset ideal acceleration curve of the hybrid vehicle and an actual acceleration of the hybrid vehicle; comparing the ideal acceleration in the preset ideal acceleration curve with the actual acceleration; When the actual acceleration is greater than the ideal acceleration, the target operating mode of the hybrid vehicle is determined to be a motor assist mode; when the actual acceleration is less than the ideal acceleration, the target operating mode is determined to be a driving charging mode, and the target operating mode includes the motor assist mode and the driving charging mode; Determining, from the plurality of motors, a first motor that matches the target operating mode and the target operating parameters; The first motor is controlled to perform a target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation; the second motor is a motor among the multiple motors other than the first motor.

2. The method according to claim 1, characterized in that: The hybrid vehicle has multiple operating modes. In different operating modes, the multiple motors perform different operations, and the target operation is associated with the target operating mode.

3. The method according to claim 2, characterized in that Determining a first motor that matches the target operating mode and the target operating parameters from the plurality of motors includes: According to a preset mapping relationship associated with the target operating mode, determining that a motor having a preset mapping relationship with the target operating parameter is a first motor; The preset mapping relationship is used to characterize the relationship between the target operating parameter and each of the multiple motors.

4. The method according to claim 3, characterized in that: The hybrid vehicle is provided with a plurality of relationship mapping tables, the plurality of relationship mapping tables correspond one to one with the plurality of operating modes, and each of the relationship mapping tables is used to store a preset mapping relationship associated with the corresponding operating mode; The step of determining, according to a preset mapping relationship associated with the target operating mode, that the motor having a mapping relationship with the target operating parameter is the first motor includes: Acquire a target relationship mapping table corresponding to the target operation mode from the plurality of relationship mapping tables; A first motor having a preset mapping relationship with the target operating parameter is determined from the target relationship mapping table.

5. The method according to claim 4, characterized in that The target relationship mapping table includes a plurality of relationship mapping sub-tables, and the operating parameters in different relationship mapping sub-tables are in different parameter ranges; The step of determining, from the target relationship mapping table, a first motor having a preset mapping relationship with the target operating parameter comprises: Determining a target parameter range within which the target operating parameter lies; Determine the relationship mapping sub-table corresponding to the target parameter range in the multiple relationship mapping sub-tables as the target mapping sub-table; A first motor having a preset mapping relationship with the target operating parameter is determined from the target mapping sub-table.

6. The method according to claim 1, characterized in that: When the target operation mode is the motor assist mode, the target operation is used to control the first motor to provide driving force for the hybrid vehicle; When the target operating mode is the driving charging mode, the target operation is used to control the first motor to charge the hybrid vehicle.

7. A control system for a hybrid vehicle, characterized in that: include: A first acquisition module is configured to acquire a target operating parameter of the hybrid vehicle when the architecture of the hybrid vehicle is a target architecture, wherein the target architecture is associated with a plurality of motors in the hybrid vehicle, and different motors of the plurality of motors are located at different positions of the hybrid vehicle; The first determination module is used to: Acquiring a preset ideal acceleration curve of the hybrid vehicle and an actual acceleration of the hybrid vehicle; comparing the ideal acceleration in the preset ideal acceleration curve with the actual acceleration; When the actual acceleration is greater than the ideal acceleration, the target operating mode of the hybrid vehicle is determined to be a motor assist mode; when the actual acceleration is less than the ideal acceleration, the target operating mode is determined to be a driving charging mode, and the target operating mode includes the motor assist mode and the driving charging mode; Determining, from the plurality of motors, a first motor that matches the target operating mode and the target operating parameters; A control module is used to control the first motor to perform a target operation, wherein the energy efficiency of the hybrid vehicle when the first motor is used to perform the target operation is higher than the energy efficiency when the second motor is used to perform the target operation; the second motor is a motor among the multiple motors other than the first motor.

8. A hybrid vehicle, characterized in that: The hybrid vehicle comprises a memory and a processor, wherein a computer program is stored in the memory, and the computer program implements the method according to any one of claims 1 to 6 when executed by the processor.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the computer program implements the method according to any one of claims 1 to 6.

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