Power distribution method and device of hybrid system, equipment, medium and vehicle

Abstract

The application discloses a power distribution method and device of a hybrid system, equipment, a medium and a vehicle. The hybrid power vehicle at least comprises an engine, a first motor, a second motor, a power battery and a transmission system. The power distribution method of the hybrid system comprises the following steps: when it is determined that the vehicle enters a driving energy consumption stable working condition, the energy flow distribution in a preset SOC balance interval is obtained based on a first control strategy; the target power distribution ratio is obtained according to the energy flow distribution with the minimum equivalent fuel consumption as the target; the second control strategy is generated according to the target power distribution ratio, the mechanical power output to the transmission system by the engine and the power generation power output to the first motor are adjusted based on the second control strategy, and the second control strategy is applied to the next preset SOC balance interval. The power of the engine, the first motor and the second motor is reasonably distributed, and the vehicle is ensured to run in an economic optimal mode.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to power distribution methods, devices, equipment, media, and vehicles for hybrid systems. Background Technology

[0002] Power distribution strategy is a key research topic in the field of hybrid electric vehicles. Through power analysis of driving demand, the main research issue is how to rationally and dynamically allocate the coordinated operation of the engine, power battery, and motor in a hybrid electric vehicle while ensuring a balanced state of charge (SOC) of the battery, optimizing the output of each component, and ensuring the engine operates in its high-efficiency range to improve fuel economy, emissions performance, and power performance. Summary of the Invention

[0003] This invention provides a power distribution method, device, equipment, medium, and vehicle for a hybrid system, so as to achieve a reasonable power distribution among the engine, the first motor, and the second motor, so as to enable the vehicle to operate in an economically optimal manner.

[0004] In a first aspect, the present invention provides a power distribution method for a hybrid system, wherein the hybrid vehicle includes at least an engine, a first motor, a second motor, a power battery, and a transmission system, the method comprising:

[0005] When it is determined that the vehicle has entered a stable driving energy consumption condition, the energy flow distribution within the current preset SOC balance range is obtained based on the first control strategy.

[0006] With the goal of minimizing equivalent fuel consumption, the target power allocation ratio is obtained based on the energy flow distribution;

[0007] A second control strategy is generated based on the target power distribution ratio. The mechanical power output from the engine to the transmission system and the power output from the engine to the first motor are adjusted based on the second control strategy and applied to the next preset SOC balance range.

[0008] Optionally, determine when the vehicle enters a stable driving energy consumption condition, including:

[0009] Obtain the vehicle's current gear and current speed information;

[0010] When the current gear is direct drive and the current vehicle speed is within the preset high-speed cruising speed range, the vehicle is confirmed to have entered a stable driving energy consumption condition.

[0011] Optionally, the first control strategy is configured to adjust the power generation of the first motor according to the real-time SOC value of the power battery.

[0012] Optionally, the energy flow distribution includes at least one of the following: the mechanical power output by the engine, the power generation power of the first motor, the driving power of the first motor, the power generation power of the second motor, the driving power of the second motor, the charging and discharging power of the power battery, and the power loss of the power battery.

[0013] Optionally, obtaining the target power allocation ratio based on the energy flow distribution includes:

[0014] Calculate the energy loss and drive efficiency under different power distribution ratios based on the energy flow distribution;

[0015] The target power allocation ratio is obtained based on the energy loss and the drive efficiency.

[0016] Optionally, obtaining the target power allocation ratio based on the energy loss and the drive efficiency includes:

[0017] The equivalent fuel consumption under different power distribution ratios is determined based on the energy loss and the driving efficiency.

[0018] The minimum equivalent fuel consumption is determined based on the equivalent fuel consumption under different power distribution ratios.

[0019] The target power allocation ratio is obtained based on the minimum equivalent fuel consumption.

[0020] Secondly, the present invention provides a power distribution device for a hybrid system, wherein the power distribution device performs the power distribution method for a hybrid system as described in any one of the first aspects, the power distribution device for the hybrid system comprising:

[0021] The energy flow distribution acquisition module is used to acquire the energy flow distribution within the current preset SOC balance range based on the first control strategy when it is determined that the vehicle has entered a stable driving energy consumption condition.

[0022] The target power allocation ratio acquisition module is used to acquire the target power allocation ratio based on the energy flow distribution with the goal of minimizing equivalent fuel consumption.

[0023] The power adjustment module is used to generate a second control strategy based on the target power distribution ratio, adjust the mechanical power output from the engine to the transmission system and the power output from the engine to the first motor based on the second control strategy, and apply it to the next preset SOC balance range.

[0024] Thirdly, the present invention provides an electronic device, the electronic device comprising:

[0025] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the power distribution method of the hybrid system described in any one of the first aspects.

[0026] Fourthly, the present invention provides a hybrid vehicle, the hybrid vehicle including at least the power distribution device of the hybrid system described in the second aspect.

[0027] Fifthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a processor to execute and implement the power allocation method of the hybrid system described in any one of the first aspects.

[0028] The technical solution of this invention provides a power allocation method for a hybrid system, comprising: when the vehicle is determined to enter a stable driving energy consumption condition, obtaining the energy flow distribution within the current preset SOC balance range based on a first control strategy, and obtaining a target power allocation ratio based on the energy flow distribution with the goal of minimizing equivalent fuel consumption, generating a second control strategy, adjusting the mechanical power output from the engine to the transmission system and the power output from the first motor based on the second control strategy, and applying it to the next preset SOC balance range. This rationally allocates the power of the engine, the first motor, and the second motor to achieve the lowest overall fuel consumption per unit driving power, ensuring the vehicle operates in an economically optimal manner.

[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A flowchart illustrating a power distribution method for a hybrid system provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of a hybrid vehicle provided in an embodiment of the present invention;

[0033] Figure 3This is a schematic diagram of an energy flow distribution provided in an embodiment of the present invention;

[0034] Figure 4 A flowchart illustrating another power distribution method for a hybrid system provided in an embodiment of the present invention;

[0035] Figure 5 A flowchart illustrating another power distribution method for a hybrid system provided in an embodiment of the present invention;

[0036] Figure 6 A flowchart illustrating another power distribution method for a hybrid system provided in an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of a power distribution device for a hybrid system provided in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Figure 1 This is a flowchart of a power allocation method for a hybrid system provided in an embodiment of the present invention. This embodiment is applicable to the power allocation of hybrid systems. The method can be executed by a power allocation device for the hybrid system, which can be implemented in hardware and / or software. Figure 2A schematic diagram of the structure of a hybrid vehicle provided in an embodiment of the present invention is shown below. Figure 2 As shown, a hybrid vehicle includes at least an engine, a first electric motor, a second electric motor, and a transmission system. The first electric motor can be a generator, used to start the engine, generate electricity, and assist the engine in outputting torque. The second electric motor is a drive motor, which can independently drive the vehicle in pure electric mode or share power with the engine in hybrid drive mode. The transmission system can be a gearbox. Hybrid vehicles also include a clutch. The first electric motor is rigidly connected to the engine on a coaxial axis, the engine is mechanically connected to the clutch, and the clutch can engage with the transmission system to achieve power connection. The second electric motor is coaxially connected to the transmission system, and the mechanical output of the transmission system can drive the wheels to rotate. In addition, hybrid vehicles also include a power battery (…). Figure 2 (Not shown in the image). For example... Figure 1 As shown, the method includes:

[0042] S101, when it is determined that the vehicle has entered a stable driving energy consumption condition, the energy flow distribution within the current preset SOC balance range is obtained based on the first control strategy.

[0043] The first control strategy is configured to adjust the power generation of the first motor based on the real-time SOC value of the power battery. When the real-time SOC value of the power battery increases, the power generation of the first motor decreases; when the real-time SOC value of the power battery decreases, the power generation of the first motor increases, thus stabilizing the SOC value within a preset SOC equilibrium range. The energy flow distribution within the current preset SOC equilibrium range is obtained based on the first control strategy to accurately assess the energy flow situation. Figure 3 This is a schematic diagram of an energy flow distribution provided in an embodiment of the present invention, such as... Figure 3 As shown, the energy flow distribution includes at least one of the following: the mechanical power output by the engine, the power generation power of the first motor, the driving power of the first motor, the power generation power of the second motor, the driving power of the second motor, the charging and discharging power of the power battery, and the power loss of the power battery.

[0044] S102 aims to minimize equivalent fuel consumption by obtaining the target power allocation ratio based on energy flow distribution.

[0045] Specifically, the target power allocation ratio is obtained based on the energy flow distribution, so that the power allocated according to the target power allocation ratio can be applied during vehicle operation to ensure minimum equivalent fuel consumption and ensure the economic efficiency of vehicle operation.

[0046] S103, generate a second control strategy based on the target power distribution ratio, adjust the mechanical power output from the engine to the transmission system and the power output from the first motor based on the second control strategy, and apply it to the next preset SOC balance range.

[0047] The system generates a second control strategy based on the target power distribution ratio. This strategy adjusts the mechanical power output from the engine to the transmission system and the power output to the first motor. Adjusting the power output to the first motor allows for power adjustment of the second motor's driving power, thus ensuring minimum equivalent fuel consumption for vehicle operation. The adjusted power value is then applied to the next preset SOC balance range to ensure a reasonable power distribution among the first motor, second motor, and engine, achieving optimal economic operation. Power distribution adjustments can be performed within each preset SOC balance range, and the adjusted power value is applied to the next preset SOC balance range to ensure the vehicle operates at minimum equivalent fuel consumption within each preset SOC balance range, guaranteeing vehicle economy.

[0048] This invention, in its embodiments, determines that when a vehicle enters a stable driving energy consumption condition, it acquires the energy flow distribution within the current preset SOC balance range based on a first control strategy; with minimum equivalent fuel consumption as the objective, it obtains a target power allocation ratio based on the energy flow distribution; a second control strategy is generated based on the target power allocation ratio; and the mechanical power output from the engine to the transmission system and the power output to the first motor are adjusted based on the second control strategy and applied to the next preset SOC balance range. This achieves vehicle operation with minimum equivalent fuel consumption, ensuring the vehicle operates in an economically optimal manner.

[0049] Optional, Figure 4 A flowchart of another power distribution method for a hybrid system provided in an embodiment of the present invention is shown below. Figure 4 As shown, the method includes:

[0050] S201, obtain the vehicle's current gear and current speed information.

[0051] Among them, the vehicle's current gear and current speed information are collected in real time so as to determine the vehicle's working status based on the current gear and current speed information.

[0052] S202, when the current gear is direct drive and the current vehicle speed is within the preset high-speed cruising speed range, the vehicle is confirmed to have entered the stable driving energy consumption condition, and the energy flow distribution within the current preset SOC balance range is obtained based on the first control strategy.

[0053] Among them, direct drive is the high-speed gear with a gear ratio of 1. The preset high-speed cruising speed range can be 90~100km / h. For example, when the current gear is direct drive and the current speed is 90km / h, it is considered that the driving energy consumption required by the vehicle is relatively stable, and the vehicle is determined to enter the stable driving energy consumption condition.

[0054] S203 aims to minimize equivalent fuel consumption by obtaining the target power distribution ratio based on energy flow distribution.

[0055] S204, generate a second control strategy based on the target power distribution ratio, adjust the mechanical power output from the engine to the transmission system and the power output from the first motor based on the second control strategy, and apply it to the next preset SOC balance range.

[0056] This invention acquires the vehicle's current gear and speed information. When the current gear is direct drive and the current speed is within a preset high-speed cruising speed range, the vehicle is confirmed to have entered a stable driving energy consumption condition. Based on a first control strategy, the energy flow distribution within the current preset SOC balance range is obtained. With minimum equivalent fuel consumption as the objective, a target power allocation ratio is obtained based on the energy flow distribution. A second control strategy is generated based on the target power allocation ratio. Based on the second control strategy, the mechanical power output from the engine to the transmission system and the power output from the first motor are adjusted and applied to the next preset SOC balance range. This achieves vehicle operation with minimum equivalent fuel consumption, ensuring the vehicle operates in an economically optimal manner.

[0057] Optional, Figure 5 A flowchart of another power distribution method for a hybrid system provided in an embodiment of the present invention is shown below. Figure 5 As shown, the method includes:

[0058] S301, obtain the vehicle's current gear and current speed information.

[0059] S302, when the current gear is direct drive and the current vehicle speed is within the preset high-speed cruising speed range, the vehicle is confirmed to have entered the stable driving energy consumption condition, and the energy flow distribution within the current preset SOC balance range is obtained based on the first control strategy.

[0060] S303 aims to minimize equivalent fuel consumption and calculates energy loss and drive efficiency under different power distribution ratios based on energy flow distribution.

[0061] Specifically, the energy loss and drive efficiency are calculated based on the energy flow distribution under different power allocation ratios, i.e., the energy loss and drive efficiency are calculated when the mechanical power output of the engine and the power generation of the motor are different. Energy loss may include battery efficiency loss, motor efficiency loss, and power battery charge / discharge efficiency loss, while drive efficiency may include the first motor drive efficiency and the second motor drive efficiency.

[0062] S304, obtains the target power allocation ratio based on energy loss and drive efficiency.

[0063] Specifically, based on the energy loss and driving efficiency under different power distribution ratios, the minimum equivalent fuel consumption is determined. Under the minimum equivalent fuel consumption, a target power distribution ratio is selected, and then the engine power, the first motor power, and the second motor power are rationally set. Engine power includes engine direct drive power and engine power generation; first motor power includes first motor drive power and first motor power generation; and second motor power includes second motor drive power and second motor power generation, ensuring the vehicle operates in the most economical way.

[0064] S305, generate a second control strategy based on the target power distribution ratio, adjust the mechanical power output from the engine to the transmission system and the power output from the first motor based on the second control strategy, and apply it to the next preset SOC balance range.

[0065] The embodiments of the present invention aim to minimize equivalent fuel consumption. Based on the energy flow distribution, the energy loss and driving efficiency under different power allocation ratios are calculated. Based on the energy loss and driving efficiency, the target power allocation ratio is obtained to achieve a reasonable allocation of engine power, first motor power and second motor power, so as to ensure that the vehicle operates in an economically optimal manner.

[0066] Optional, Figure 6 A flowchart of another power distribution method for a hybrid system provided in an embodiment of the present invention is shown below. Figure 6 As shown, the method includes:

[0067] S401, obtain the vehicle's current gear and current speed information.

[0068] S402, when the current gear is direct drive and the current vehicle speed is within the preset high-speed cruising speed range, the vehicle is confirmed to have entered the stable driving energy consumption condition, and the energy flow distribution within the current preset SOC balance range is obtained based on the first control strategy.

[0069] S403 aims to minimize equivalent fuel consumption and calculates energy loss and drive efficiency under different power distribution ratios based on energy flow distribution.

[0070] S404 determines the equivalent fuel consumption under different power distribution ratios based on energy loss and drive efficiency.

[0071] The equivalent fuel consumption under different power distribution ratios is calculated based on energy loss and drive efficiency. The values ​​of multiple equivalent fuel consumptions can be sorted by size to determine the minimum equivalent fuel consumption.

[0072] S405 determines the minimum equivalent fuel consumption based on the equivalent fuel consumption under different power distribution ratios.

[0073] S406, the target power distribution ratio is obtained based on the minimum equivalent fuel consumption.

[0074] Among multiple equivalent fuel consumption options, the minimum equivalent fuel consumption is selected, and the target power distribution ratio under the minimum equivalent fuel consumption is calculated to determine the engine power, the first motor power, and the second motor power, so as to achieve a reasonable power distribution and ensure that the vehicle operates in the most economical way.

[0075] S407 generates a second control strategy based on the target power distribution ratio, adjusts the mechanical power output from the engine to the transmission system and the power output from the first motor based on the second control strategy, and applies it to the next preset SOC balance range.

[0076] This invention determines the equivalent fuel consumption under different power distribution ratios based on energy loss and drive efficiency; determines the minimum equivalent fuel consumption based on the equivalent fuel consumption under different power distribution ratios; and obtains the target power distribution ratio based on the minimum equivalent fuel consumption. This achieves a reasonable allocation of engine power, first motor power, and second motor power, ensuring the vehicle operates in an economically optimal manner.

[0077] Based on the same inventive concept, embodiments of the present invention also provide a power distribution device for a hybrid system. This power distribution device is used to execute the power distribution method for a hybrid system provided in any embodiment of the present invention. The power distribution device for the hybrid system can be implemented by software and / or hardware. Figure 7 This is a schematic diagram of the structure of a power distribution device for a hybrid system provided in an embodiment of the present invention, as shown below. Figure 7 As shown, the power distribution device of the hybrid system executes the power distribution method of the hybrid system as described in any of the above embodiments. The power distribution device of the hybrid system includes:

[0078] The energy flow distribution acquisition module 201 is used to acquire the energy flow distribution within the current preset SOC balance range based on the first control strategy when it is determined that the vehicle has entered a stable driving energy consumption condition.

[0079] The target power allocation ratio acquisition module 202 is used to acquire the target power allocation ratio based on the energy flow distribution with the goal of minimizing equivalent fuel consumption.

[0080] The power adjustment module 203 is used to generate a second control strategy according to the target power distribution ratio, adjust the mechanical power output from the engine to the transmission system and the power output from the first motor based on the second control strategy, and apply it to the next preset SOC balance range.

[0081] Therefore, the power distribution device for the hybrid system provided in the embodiments of the present invention includes the technical features of the power distribution method for the hybrid system provided in any embodiment of the present invention, and can achieve the beneficial effects of the power distribution method for the hybrid system provided in any embodiment of the present invention. The similarities can be referred to the above description of the power distribution method for the hybrid system provided in the embodiments of the present invention, and will not be repeated here.

[0082] Based on the same inventive concept, embodiments of the present invention also provide a hybrid vehicle, which includes at least the power distribution device of the hybrid system described in the above embodiments. Therefore, the hybrid vehicle provided by the embodiments of the present invention includes the technical features of the power distribution device of the hybrid system provided in any embodiment of the present invention, and can achieve the beneficial effects of the power distribution device of the hybrid system provided in any embodiment of the present invention. Similarities can be found in the above description of the power distribution device of the hybrid system provided by the embodiments of the present invention, and will not be repeated here.

[0083] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Figure 8 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0084] like Figure 8 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM 12) or a random access memory (RAM 13), communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, the ROM 12, and the RAM 13 are interconnected via a bus 14. An input / output interface (I / O interface 15) is also connected to the bus 14.

[0085] Multiple components in electronic device 10 are connected to an input / output interface (I / O interface 15), including: an input unit 16, such as a keyboard, mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, optical disk, etc.; and a communication unit 19, such as a network card, modem, wireless transceiver, etc. The communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0086] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as power distribution methods in hybrid systems.

[0087] In some embodiments, the power allocation method for the hybrid system may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded into and / or installed on electronic device 10 via read-only memory (ROM 12) and / or communication unit 19. When the computer program is loaded into random access memory (RAM 13) and executed by processor 11, one or more steps of the power allocation method for the hybrid system described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the power allocation method for the hybrid system by any other suitable means (e.g., by means of firmware).

[0088] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0089] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0090] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0091] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0092] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0093] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0094] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0095] This invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the power distribution method of the hybrid system according to any one of the above embodiments.

[0096] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A power distribution method for a hybrid system, characterized in that, A hybrid vehicle includes at least an engine, a first electric motor, a second electric motor, a power battery, and a transmission system; the method includes: When it is determined that the vehicle has entered a stable driving energy consumption condition, the energy flow distribution within the current preset SOC balance range is obtained based on the first control strategy. With the goal of minimizing equivalent fuel consumption, the target power allocation ratio is obtained based on the energy flow distribution; A second control strategy is generated based on the target power distribution ratio. The mechanical power output from the engine to the transmission system and the power output from the engine to the first motor are adjusted based on the second control strategy and applied to the next preset SOC balance range. The determination that the vehicle has entered a stable driving energy consumption condition includes: Obtain the vehicle's current gear and current speed information; When the current gear is direct drive and the current vehicle speed is within the preset high-speed cruising speed range, the vehicle is confirmed to have entered a stable driving energy consumption condition. The first control strategy is configured to adjust the power generation of the first motor according to the real-time SOC value of the power battery.

2. The power distribution method for a hybrid system according to claim 1, characterized in that, The energy flow distribution includes at least one of the following: the mechanical power output by the engine, the power generation power of the first motor, the driving power of the first motor, the power generation power of the second motor, the driving power of the second motor, the charging and discharging power of the power battery, and the power loss of the power battery.

3. The power distribution method for a hybrid system according to claim 1, characterized in that, The step of obtaining the target power allocation ratio based on the energy flow distribution includes: Calculate the energy loss and drive efficiency under different power distribution ratios based on the energy flow distribution; The target power allocation ratio is obtained based on the energy loss and the drive efficiency.

4. The power distribution method for a hybrid system according to claim 3, characterized in that, Obtaining the target power allocation ratio based on the energy loss and the drive efficiency includes: The equivalent fuel consumption under different power distribution ratios is determined based on the energy loss and the driving efficiency. The minimum equivalent fuel consumption is determined based on the equivalent fuel consumption under different power distribution ratios. The target power allocation ratio is obtained based on the minimum equivalent fuel consumption.

5. A power distribution device for a hybrid system, characterized in that, The power distribution device of the hybrid system performs the power distribution method of the hybrid system according to any one of claims 1-4, wherein the power distribution device of the hybrid system comprises: The energy flow distribution acquisition module is used to acquire the energy flow distribution within the current preset SOC balance range based on the first control strategy when it is determined that the vehicle has entered a stable driving energy consumption condition. The target power allocation ratio acquisition module is used to acquire the target power allocation ratio based on the energy flow distribution with the goal of minimizing equivalent fuel consumption. The power adjustment module is used to generate a second control strategy based on the target power distribution ratio, adjust the mechanical power output from the engine to the transmission system and the power output from the engine to the first motor based on the second control strategy, and apply it to the next preset SOC balance range.

6. An electronic device, characterized in that, The electronic device includes: At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the power distribution method of the hybrid system according to any one of claims 1-4.

7. A hybrid vehicle, characterized in that, The hybrid vehicle includes at least the power distribution device of the hybrid system as described in claim 6.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the power distribution method of the hybrid system according to any one of claims 1-4.

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