Parallel hybrid power torque distribution method, device, equipment and medium

Abstract

The invention provides a parallel hybrid power torque distribution method, device and equipment and a medium, and relates to the technical field of new energy automobiles. The method comprises the following steps: traversing the distribution torque of an engine under different rotating speeds and different required torques of a motor; in any round of traversal process, if the current distribution torque of the engine is smaller than the current demand torque, a fuel equivalent factor of the motor in a power assisting mode is calculated according to the energy recovery coefficient, and if the current distribution torque is larger than the current demand torque, a fuel equivalent factor of the motor in a charging mode is calculated; the distribution torque of the engine corresponding to the fuel equivalent factor meeting the set condition is selected to serve as the target distribution torque of the engine under the current rotating speed and the current demand torque; establishing a torque distribution table according to respective target distribution torque of the engine and the motor under different rotating speeds and different required torques; and the real-time rotating speed and the real-time required torque of the motor are obtained, and the real-time distribution torque is obtained through the torque distribution table. The energy consumption of the whole vehicle can be reduced.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a parallel hybrid power torque distribution method, device, equipment and medium. Background Art

[0002] At present, the mainstream hybrid power torque distribution method is mainly based on the required torque, controlling the engine torque near the optimal torque line, and the motor makes up the remaining torque.

[0003] Although the above method has certain reliability in practical application, the energy consumption is not the lowest, which affects the energy saving effect of the vehicle hybrid system. Summary of the invention

[0004] The present application provides a parallel hybrid power torque distribution method, device, equipment and medium to solve the problem in the prior art of how to more reasonably distribute torque to minimize energy consumption.

[0005] In a first aspect, the present application provides a parallel hybrid power torque distribution method, which is applied to a parallel hybrid power vehicle, the vehicle comprising an engine, a motor and a battery, the method comprising:

[0006] Under different rotation speeds and different required torques of the motor, the distributed torque of the engine is traversed;

[0007] In any round of traversal, if the current distributed torque of the engine is less than the current required torque, the fuel equivalent factor of the motor in the power-assist mode is calculated according to the energy recovery coefficient; if the current distributed torque of the engine is greater than the current required torque, the fuel equivalent factor of the motor in the charging mode is calculated, wherein the energy recovery coefficient is used to indicate the proportion of the battery power increase brought by energy recovery to the total battery power increase;

[0008] Selecting the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque, wherein the target distributed torque of the motor is the difference between the current required torque and the target distributed torque of the engine, and the fuel equivalent factor is used to measure the equivalent fuel consumption of the engine and the motor under different torque distribution modes;

[0009] Establishing a torque distribution table according to the respective target distribution torques of the engine and the motor under the different speeds and different required torques;

[0010] The real-time rotation speed and the real-time required torque of the motor are obtained, and the real-time distributed torques of the engine and the motor are obtained respectively through the torque distribution table.

[0011] In a second aspect, the present application provides a parallel hybrid power torque distribution device, which is configured in a parallel hybrid power vehicle, the vehicle comprising an engine, a motor and a battery, the device comprising:

[0012] A traversal module, used for traversing the distributed torque of the engine under different rotation speeds and different required torques of the motor;

[0013] A fuel equivalent factor calculation module, used for calculating the fuel equivalent factor of the motor in the power-assist mode according to the energy recovery coefficient if the current distributed torque of the engine is less than the current required torque during any round of traversal, and for calculating the fuel equivalent factor of the motor in the charging mode if the current distributed torque of the engine is greater than the current required torque, wherein the energy recovery coefficient is used to indicate the proportion of the battery power increase brought by energy recovery to the total battery power increase;

[0014] a selection module, for selecting the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque, wherein the target distributed torque of the motor is the difference between the current required torque and the target distributed torque of the engine, and the fuel equivalent factor is used to measure the equivalent fuel consumption of the engine and the motor under different torque distribution modes;

[0015] A torque distribution table establishing module, used for establishing a torque distribution table according to the respective target distribution torques of the engine and the motor under the different speeds and different required torques;

[0016] The torque distribution module is used to obtain the real-time rotation speed and the real-time required torque of the motor, and obtain the real-time distribution torque of the engine and the motor respectively through the torque distribution table.

[0017] In a third aspect, the present application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the parallel hybrid power torque distribution method as described in any one of the embodiments of the present application is implemented.

[0018] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the parallel hybrid power torque distribution method as described in any one of the embodiments of the present application.

[0019] In a fifth aspect, the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the parallel hybrid power torque distribution method as described in any one of the embodiments of the present application.

[0020] In a sixth aspect, the present application also provides a parallel hybrid vehicle, including an engine, a motor and a battery, and the vehicle is also configured with a parallel hybrid torque distribution device as described in any of the embodiments of the present application.

[0021] The parallel hybrid torque distribution method, device, equipment and medium provided in the present application calculate the fuel equivalent factor of the motor in the power-assist mode and the charging mode by comparing the current distributed torque of the engine with the current required torque, and incorporate the energy recovery coefficient representing the proportion of the battery power increase caused by energy recovery to the total battery power increase when calculating the fuel equivalent factor of the power-assist mode. Then, the torque distribution method corresponding to the fuel equivalent factor that meets the set conditions is selected to establish a torque distribution table. During the operation of the vehicle, the torque distribution method of the engine and the motor corresponding to the current real-time speed and the real-time required torque is obtained based on the torque distribution table. In this way, while meeting the vehicle's power performance, the energy consumption of the entire vehicle can be minimized, thereby improving the energy-saving effect of the vehicle's hybrid power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A flow chart of a parallel hybrid power torque distribution method provided in an embodiment of the present application;

[0024] Figure 2 A logic block diagram of a method for calculating a fuel equivalent factor in a torque distribution method provided in an embodiment of the present application;

[0025] Figure 3 A flow chart of another parallel hybrid power torque distribution method provided in an embodiment of the present application;

[0026] Figure 4 A logic block diagram for determining whether the engine intervention condition is met in the torque distribution method provided in an embodiment of the present application;

[0027] Figure 5 A flow chart of another parallel hybrid power torque distribution method provided in an embodiment of the present application;

[0028] Figure 6 A logic block diagram of torque distribution in a hybrid mode in a torque distribution method provided in an embodiment of the present application;

[0029] Figure 7 A schematic structural diagram of a parallel hybrid power torque distribution device provided in an embodiment of the present application;

[0030] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0031] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application, rather than all structures, are shown in the accompanying drawings.

[0033] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. The acquisition, storage, use, processing, etc. of data in the technical solution of this application comply with the relevant provisions of national laws and regulations. It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be regarded as exemplary. The purpose is only to illustrate the feasibility of the implementation of the technical solution of this application, but it does not mean that the applicant has or must use the relevant content of the solution.

[0034] Figure 1 A flow chart of a parallel hybrid power torque distribution method provided in an embodiment of the present application. This embodiment is applicable to the case where a parallel hybrid power vehicle distributes torque between an engine and a motor when entering a hybrid mode. The method can be executed by a parallel hybrid power torque distribution device, which can be implemented in software and / or hardware, and is preferably configured in a parallel hybrid power vehicle, which includes an engine, a motor and a battery. Figure 1 As shown, the method specifically includes:

[0035] S101, traversing the distributed torque of the engine under different rotation speeds and different required torques of the motor.

[0036] S102. During any round of traversal, if the current distributed torque of the engine is less than the current required torque, the fuel equivalent factor of the motor in the power-assist mode is calculated according to the energy recovery coefficient; if the current distributed torque of the engine is greater than the current required torque, the fuel equivalent factor of the motor in the charging mode is calculated.

[0037] Among them, the energy recovery coefficient is used to indicate the proportion of the battery power increase brought by energy recovery to the total battery power increase.

[0038] S103: Selecting the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque.

[0039] Among them, the target distribution torque of the motor is the difference between the current required torque and the target distribution torque of the engine, and the fuel equivalent factor is used to measure the equivalent fuel consumption of the engine and the motor under different torque distribution methods.

[0040] S104: Establish a torque distribution table according to the target distribution torques of the engine and the motor at different speeds and different required torques.

[0041] S105, obtaining the real-time rotation speed and real-time required torque of the motor, and obtaining the real-time distribution torque of the engine and the motor respectively through a torque distribution table.

[0042] Specifically, when calculating the fuel equivalent factor, a traversal method is adopted. First, the possible distributed torques of the engine are traversed for different motor speeds and different required torques at each motor speed, and the fuel equivalent factor corresponding to the torque distribution method under each set of motor speeds and required torques is calculated. The distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions is selected as the target distributed torque of the engine under the current motor speed and required torque of the group. The difference between the required torque and the target distributed torque of the engine is the target distributed torque of the motor. The required torque is related to the driving state of the vehicle and the surrounding environment. The specific method of obtaining it can refer to the existing technology and will not be repeated here.

[0043] The fuel equivalence factor is used to measure the equivalent fuel consumption of the engine and motor under different torque distribution modes. Therefore, by selecting appropriate setting conditions, the fuel consumption can be controlled within the allowable range. For example, when the setting condition is the minimum fuel equivalence factor, the energy consumption of the whole vehicle can be minimized, achieving the purpose of improving the energy saving effect of the vehicle hybrid system.

[0044] There are two ways to calculate the fuel equivalence factor. If the current distributed torque of the engine is less than the current required torque, the fuel equivalence factor of the motor in the power-assist mode is calculated based on the energy recovery coefficient. If the current distributed torque of the engine is greater than the current required torque, the fuel equivalence factor of the motor in the charging mode is calculated. Among them, the current distributed torque of the engine is the currently traversed distributed torque. By comparing the current distributed torque of the engine with the current required torque, the calculation of the fuel equivalence factor in the power-assist mode and the charging mode can be realized. The fuel equivalence factors under different torque distribution methods can be fully compared, and the torque distribution method with the lowest fuel equivalence factor can be selected to achieve the purpose of energy saving.

[0045] In the embodiment of the present application, the energy recovery coefficient is integrated when calculating the fuel equivalent factor when the motor is in the power-assisted mode. The energy recovery coefficient is used to indicate the proportion of the battery power increase caused by energy recovery relative to the total battery power increase. In other words, in the embodiment of the present application, when calculating the fuel equivalent factor, the impact of brake energy recovery is taken into account, so as to obtain a more accurate fuel equivalent factor in the power-assisted mode, and then a more accurate torque distribution method can be determined later.

[0046] In one implementation, the fuel equivalent factor when the motor is in the power-assist mode is calculated according to the following formula:

[0047]

[0048] The fuel equivalence factor when the motor is in charging mode is calculated as follows:

[0049]

[0050] Among them, T eng is the current distributed torque of the engine, B eng is the fuel consumption of the engine at the current speed and torque, T isg is the current torque distribution of the motor, B avr is the average fuel consumption rate of the engine, and are the motor discharge efficiency, battery discharge efficiency, motor charging efficiency and battery charging efficiency at the current motor speed and torque, respectively. rea is the current required torque, B rea is the engine fuel consumption corresponding to the current required torque; E is the energy recovery coefficient.

[0051] In an embodiment of the present application, the energy recovery coefficient is determined by analyzing the ratio of the total energy recovered by braking during the operation of the vehicle on a road spectrum to the total energy generated by the motor, and different road spectra correspond to different energy recovery coefficients. For example, the energy recovery coefficients obtained in different environments such as highways, cities or towns are not the same. Therefore, when calculating the fuel equivalence factor in the above embodiment of the present application, the corresponding energy recovery coefficient can also be selected in combination with different road spectra for calculation. In this way, the torque distribution method for different road spectra can be obtained in a more targeted manner, so that the purpose of minimizing energy consumption can be achieved in different environments.

[0052] Figure 2 The logic block diagram of the method for calculating the fuel equivalent factor in the torque distribution method provided in the embodiment of the present application. As can be seen from the figure, for a certain set of speeds and required torques, the target distribution torque of the engine is traversed. At this time, the traversed interval can be a minimum value of 1 and a maximum value of the engine external characteristic torque at the current speed. For the torque distribution method currently traversed, when calculating the fuel equivalent factor during assist, the parameters based on include engine torque, specific fuel consumption of engine torque, motor torque, motor discharge efficiency, battery discharge efficiency, motor charging efficiency, battery charging efficiency, energy recovery coefficient, engine average specific fuel consumption, required torque and specific fuel consumption of required torque. When calculating the fuel equivalent factor during charging, the parameters based on include engine torque, specific fuel consumption of engine torque, motor torque, motor charging efficiency, battery charging efficiency, engine average specific fuel consumption, required torque and specific fuel consumption of required torque. Among them, the average specific fuel consumption of the engine is the result obtained by taking the average value according to the universal characteristics. For different working conditions and different models, the average specific fuel consumption can be optimized in combination with the distribution ratio of the commonly used working conditions of the engine. At the same time, the energy recovery coefficient is determined through road spectrum analysis on the assumption that the system maintains power balance.

[0053] The parallel hybrid torque distribution method, device, equipment and medium provided in the present application calculate the fuel equivalent factor of the motor in the power-assist mode and the charging mode by comparing the current distributed torque of the engine with the current required torque, and incorporate the energy recovery coefficient representing the proportion of the battery power increase caused by energy recovery to the total battery power increase when calculating the fuel equivalent factor of the power-assist mode. Then, the torque distribution method corresponding to the fuel equivalent factor that meets the set conditions is selected to establish a torque distribution table. During the operation of the vehicle, the torque distribution method of the engine and the motor corresponding to the current real-time speed and the real-time required torque is obtained based on the torque distribution table. In this way, while meeting the vehicle's power performance, the energy consumption of the entire vehicle can be minimized, thereby improving the energy-saving effect of the vehicle's hybrid power system.

[0054] Figure 3 A flow chart of another parallel hybrid power torque distribution method provided in an embodiment of the present application. Figure 3 As shown, the method includes:

[0055] S301, traversing the distributed torque of the engine under different rotation speeds and different required torques of the motor.

[0056] S302. During any round of traversal, if the current distributed torque of the engine is less than the current required torque, the fuel equivalent factor of the motor in the power-assist mode is calculated based on the energy recovery coefficient; if the current distributed torque of the engine is greater than the current required torque, the fuel equivalent factor of the motor in the charging mode is calculated.

[0057] S303: Select the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque.

[0058] S304: Establish a torque distribution table according to the target distribution torques of the engine and the motor at different speeds and different required torques.

[0059] S305. According to the real-time vehicle speed, throttle opening and battery status, determine whether the engine intervention condition is currently met. If so, enter the hybrid mode and execute S306.

[0060] S306: Acquire the real-time rotation speed and real-time required torque of the motor, and acquire the real-time distributed torque of the engine and the motor respectively through a torque distribution table.

[0061] In one embodiment, if the current throttle opening is greater than 80%, it is a large throttle, and the engine can be forced to intervene to ensure the power of the whole vehicle. If the current throttle opening is less than 80%, it is a small throttle. At this time, it is necessary to calculate whether the engine is started by looking up a table. The X axis in the table represents the battery state SOC, and the Y axis represents the vehicle speed. Taking a 6-speed gearbox as an example, when the power is low and less than 30%, the vehicle speed is greater than or equal to 10km / h, and the engine starts; as the power increases, when the SOC is 30% to 40% and the vehicle speed is greater than or equal to 20km / h, the engine intervenes; when the SOC is 40% to 50% and the vehicle speed is greater than or equal to 30km / h, the engine intervenes; when the SOC is 50% to 60% and the vehicle speed is greater than or equal to 40km / h, the engine intervenes; when the SOC is 60% to 80% and the vehicle speed is greater than or equal to 50km / h, the engine intervenes; when the SOC is greater than 80% and the vehicle speed is greater than or equal to 60km / h, the engine intervenes.

[0062] The embodiment of the present application controls the conditions for engine intervention so that the power of the entire vehicle can be kept as balanced as possible during operation. At the same time, the engine is forced to intervene when the throttle is high, thereby ensuring the power of the entire vehicle.

[0063] Figure 4This is a logic block diagram for judging whether the engine intervention condition is met in the torque distribution method provided in the embodiment of the present application. As shown in the figure, when the throttle opening is greater than 80%, the engine starts; when the throttle opening is less than 80%, the two-dimensional table of vehicle speed and SOC is queried. If the conditions in the table are met, the output is 1 and the engine starts, otherwise the output is 0 and the pure electric mode is entered.

[0064] In addition, when the brake pedal is pressed, the engine cut-out condition is met, and the braking mode is entered, and the torque of the motor can be calculated according to the energy recovery strategy. When the vehicle speed is low, the engine cut-out condition is met, and the pure electric mode is entered, and all the required torque of the vehicle is allocated to the motor.

[0065] Figure 5 A flow chart of another parallel hybrid power torque distribution method provided in an embodiment of the present application. Figure 5 As shown, the method includes:

[0066] S501, traversing the distributed torque of the engine under different rotation speeds and different required torques of the motor.

[0067] S502. During any round of traversal, if the current distributed torque of the engine is less than the current required torque, the fuel equivalent factor of the motor in the power-assist mode is calculated based on the energy recovery coefficient; if the current distributed torque of the engine is greater than the current required torque, the fuel equivalent factor of the motor in the charging mode is calculated.

[0068] S503: Select the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque.

[0069] S504: Establish a torque distribution table according to the target distribution torques of the engine and the motor at different speeds and different required torques.

[0070] S505 , obtaining the real-time rotation speed and real-time required torque of the motor, and obtaining the real-time distribution torque of the engine and the motor respectively through a torque distribution table.

[0071] S506, determine whether the real-time distributed torque of the motor exceeds the motor torque limit, if so, execute S507, if not, execute S508.

[0072] S507: Allocate the motor torque limit to the motor, and allocate the difference between the real-time required torque and the motor torque limit to the engine.

[0073] S508: Distribute the real-time distribution torque of the engine and the motor respectively obtained through the torque distribution table to the engine and the motor.

[0074] Specifically, after obtaining the real-time distribution torque of the engine and the motor, it is necessary to determine whether the real-time distribution torque of the motor exceeds the motor torque limit, and handle it separately based on different situations. When it does not exceed the motor torque limit, the obtained real-time distribution torque can be distributed. When it exceeds the motor torque limit, the motor torque limit is allocated to the motor, and the difference between the real-time demand torque and the motor torque limit is allocated to the engine.

[0075] Figure 6 A logic block diagram of torque distribution in hybrid mode in the torque distribution method provided in an embodiment of the present application. As shown in the figure, the torque distribution method when the fuel equivalence factor is minimum refers to the initial distribution engine torque and the initial distribution motor torque. When the initial distribution motor torque does not exceed the motor torque limit, it is distributed in this way. When the motor torque limit is exceeded, the motor torque limit is used as the final target distribution motor torque for distribution, and the difference between the demand torque and the target distribution engine torque. In this way, the rationality of the torque distribution can be further improved.

[0076] Figure 7 The structure diagram of a parallel hybrid power torque distribution device provided in an embodiment of the present application is shown in FIG. The device is configured in a parallel hybrid power vehicle, which includes an engine, a motor and a battery. Figure 7 As shown, the device 70 includes:

[0077] A traversal module 710, configured to traverse the distributed torque of the engine under different rotation speeds and different required torques of the motor;

[0078] The fuel equivalent factor calculation module 720 is used to calculate the fuel equivalent factor of the motor in the power-assist mode according to the energy recovery coefficient if the current distributed torque of the engine is less than the current required torque during any round of traversal, and calculate the fuel equivalent factor of the motor in the charging mode if the current distributed torque of the engine is greater than the current required torque, wherein the energy recovery coefficient is used to indicate the proportion of the battery power increase brought by energy recovery to the total battery power increase;

[0079] A selection module 730 is used to select the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque, wherein the target distributed torque of the motor is the difference between the current required torque and the target distributed torque of the engine, and the fuel equivalent factor is used to measure the equivalent fuel consumption of the engine and the motor under different torque distribution modes;

[0080] A torque distribution table establishing module 740 is used to establish a torque distribution table according to the respective target distribution torques of the engine and the motor under the different speeds and different required torques;

[0081] The torque distribution module 750 is used to obtain the real-time rotation speed and the real-time required torque of the motor, and obtain the real-time distribution torque of the engine and the motor respectively through the torque distribution table.

[0082] In some embodiments, the fuel equivalent factor when the motor is in the power-assist mode is calculated according to the following formula:

[0083]

[0084] Among them, T eng is the current distributed torque of the engine, B eng is the fuel consumption of the engine at the current speed and torque, T isg is the current torque distribution of the motor, B avr is the average fuel consumption rate of the engine, and are the motor discharge efficiency, battery discharge efficiency, motor charging efficiency and battery charging efficiency at the current motor speed and torque, respectively. rea is the current required torque, B req is the engine fuel consumption corresponding to the current required torque; E is the energy recovery coefficient.

[0085] In some embodiments, the energy recovery coefficient is determined by analyzing the ratio of the total energy recovered by braking to the total energy generated by the motor during the operation of the vehicle on a road spectrum, and different road spectra correspond to different energy recovery coefficients.

[0086] In some embodiments, the fuel equivalent factor when the motor is in charging mode is calculated according to the following formula:

[0087]

[0088] In some embodiments, the apparatus further comprises an intervention condition determination module, wherein the intervention condition determination module comprises:

[0089] A first judgment unit, used for judging whether the engine intervention condition is currently met according to the real-time vehicle speed, throttle opening and the state of the battery before the torque distribution module 750 obtains the real-time speed and the real-time required torque of the motor;

[0090] The processing unit is used to enter the hybrid mode if the judgment is yes, and execute the step of obtaining the real-time speed and real-time required torque of the motor.

[0091] In some embodiments, the device further includes a limit value judgment module, and the limit value judgment module includes:

[0092] A second judgment unit, used to judge whether the real-time distributed torque of the motor exceeds the motor torque limit;

[0093] a first allocating unit, configured to allocate the real-time allocated torques of the engine and the motor respectively obtained through the torque allocation table to the engine and the motor respectively if it is determined that the motor torque limit is not exceeded;

[0094] The second allocation unit is configured to allocate the motor torque limit to the motor if it is determined that the motor torque limit is exceeded, and allocate the difference between the real-time required torque and the motor torque limit to the engine.

[0095] The parallel hybrid power torque distribution device provided in the embodiment of the present application can be used to implement the technical solution of the parallel hybrid power torque distribution method in the above embodiment. Its implementation principle and technical effect are similar and will not be repeated here.

[0096] It should be noted that it should be understood that the division of the various modules of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software calling through processing elements, and some modules can be implemented in the form of hardware. For example, the fuel equivalent factor calculation module 720 can be a separate processing element, or it can be integrated in a chip of the above device. In addition, it can also be stored in the memory of the above device in the form of program code, and called and executed by a processing element of the above device. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0097] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 8 As shown, the electronic device may include: a transceiver 121 , a processor 122 , and a memory 123 .

[0098] The processor 122 executes the computer execution instructions stored in the memory, so that the processor 122 executes the scheme in the above embodiment. The processor 122 can be a general-purpose processor, including a central processing unit CPU, a network processor (network processor, NP), etc.; it can also be a digital signal processor DSP, an application-specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0099] The memory 123 is connected to the processor 122 via a system bus and completes communication between them. The memory 123 is used to store computer program instructions.

[0100] The transceiver 121 may be used to obtain tasks to be executed and configuration information of the tasks to be executed.

[0101] The system bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The system bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The transceiver is used to realize the communication between the database access device and other computers (such as clients, read-write libraries, and read-only libraries). The memory may include random access memory (RAM) and may also include non-volatile memory.

[0102] The electronic device provided in the embodiment of the present application may be the terminal device of the above embodiment.

[0103] An embodiment of the present application also provides a parallel hybrid vehicle, including an engine, a motor and a battery. The vehicle is also configured with a parallel hybrid torque distribution device as described in any of the embodiments of the present application.

[0104] An embodiment of the present application further provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions are executed on a computer, the computer executes the technical solution of the parallel hybrid power torque distribution method of the above embodiment.

[0105] An embodiment of the present application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When at least one processor executes the computer program, it can implement the technical solution of the parallel hybrid torque distribution method in the above embodiment.

[0106] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present application, and the programming language includes an object-oriented programming language, such as Java, Smalltalk, C++, and also includes a conventional procedural programming language, such as "C" language or similar programming language. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on the remote computer, or completely on the remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0107] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A parallel hybrid power torque distribution method, applied to a parallel hybrid power vehicle, the vehicle comprising an engine, a motor and a battery, characterized in that: The method comprises: Under different rotation speeds and different required torques of the motor, the distributed torque of the engine is traversed; In any round of traversal, if the current distributed torque of the engine is less than the current required torque, the fuel equivalent factor of the motor in the power-assist mode is calculated according to the energy recovery coefficient; if the current distributed torque of the engine is greater than the current required torque, the fuel equivalent factor of the motor in the charging mode is calculated, wherein the energy recovery coefficient is used to indicate the proportion of the battery power increase brought by energy recovery to the total battery power increase; Selecting the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque, wherein the target distributed torque of the motor is the difference between the current required torque and the target distributed torque of the engine, and the fuel equivalent factor is used to measure the equivalent fuel consumption of the engine and the motor under different torque distribution modes; Establishing a torque distribution table according to the respective target distribution torques of the engine and the motor under the different speeds and different required torques; The real-time rotation speed and the real-time required torque of the motor are obtained, and the real-time distributed torques of the engine and the motor are obtained respectively through the torque distribution table.

2. The method according to claim 1, characterized in that The fuel equivalent factor when the motor is in the power-assist mode is calculated according to the following formula: Among them, T eng is the current distributed torque of the engine, B eng is the fuel consumption of the engine at the current speed and torque, T isg is the current distributed torque of the motor, B avr is the average fuel consumption rate of the engine, and are the motor discharge efficiency, battery discharge efficiency, motor charging efficiency and battery charging efficiency at the current speed and torque of the motor, respectively. req is the current required torque, B req is the engine fuel consumption corresponding to the current required torque; E is the energy recovery coefficient.

3. The method according to claim 2, characterized in that The energy recovery coefficient is determined by analyzing the ratio of the total energy recovered by braking to the total energy generated by the motor during the operation of the vehicle on a road spectrum, and different road spectra correspond to different energy recovery coefficients.

4. The method according to claim 2, characterized in that: The fuel equivalent factor when the motor is in charging mode is calculated according to the following formula:

5. The method according to claim 1, characterized in that Before obtaining the real-time rotation speed and the real-time required torque of the motor, the method further includes: Determining whether an engine intervention condition is currently met according to the real-time vehicle speed, throttle opening and the battery status; If so, the hybrid mode is entered, and the step of obtaining the real-time rotation speed and the real-time required torque of the motor is executed.

6. The method according to claim 1, characterized in that Also includes: Determining whether the real-time distributed torque of the motor exceeds the motor torque limit; If not, the real-time distribution torque of the engine and the motor respectively obtained through the torque distribution table is distributed to the engine and the motor respectively; If so, the motor torque limit is allocated to the motor, and the difference between the real-time required torque and the motor torque limit is allocated to the engine.

7. A parallel hybrid power torque distribution device, configured in a parallel hybrid power vehicle, the vehicle comprising an engine, a motor and a battery, characterized in that: The device comprises: A traversal module, used for traversing the distributed torque of the engine under different rotation speeds and different required torques of the motor; A fuel equivalent factor calculation module, used for calculating the fuel equivalent factor of the motor in the power-assist mode according to the energy recovery coefficient if the current distributed torque of the engine is less than the current required torque during any round of traversal, and for calculating the fuel equivalent factor of the motor in the charging mode if the current distributed torque of the engine is greater than the current required torque, wherein the energy recovery coefficient is used to indicate the proportion of the battery power increase brought by energy recovery to the total battery power increase; a selection module, for selecting the distributed torque of the engine corresponding to the fuel equivalent factor that meets the set conditions as the target distributed torque of the engine under the current speed and the current required torque, wherein the target distributed torque of the motor is the difference between the current required torque and the target distributed torque of the engine, and the fuel equivalent factor is used to measure the equivalent fuel consumption of the engine and the motor under different torque distribution modes; A torque distribution table establishing module, used for establishing a torque distribution table according to the respective target distribution torques of the engine and the motor under the different speeds and different required torques; The torque distribution module is used to obtain the real-time rotation speed and the real-time required torque of the motor, and obtain the real-time distribution torque of the engine and the motor respectively through the torque distribution table.

8. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the parallel hybrid power torque distribution method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the parallel hybrid power torque distribution method according to any one of claims 1 to 6 when executed by a processor.

10. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the parallel hybrid power torque distribution method according to any one of claims 1 to 6.

11. A parallel hybrid vehicle, comprising an engine, a motor and a battery, characterized in that: The vehicle is also provided with the parallel hybrid torque distribution device as claimed in claim 7 .

Images