A torque distribution method and distribution device for parallel hybrid vehicles.

Abstract

This disclosure provides a torque distribution method and device for a parallel hybrid vehicle. The torque distribution method includes: determining the current operating condition of the vehicle based on its current state parameters; obtaining the current state of charge (SOC) of the power battery in the vehicle; and distributing torque between the engine and the drive motor based on the current operating condition and the current SOC. This disclosure addresses both the driving conditions and battery energy management of the hybrid vehicle, distributing torque between the engine and the motor under different operating conditions. This better meets the needs of both the driver and energy management, satisfying the dual requirements of vehicle power and economy.

Description

Technical Field

[0001] This disclosure relates to the field of hybrid vehicle control technology, and more specifically, to a torque distribution method and distribution device for a parallel hybrid vehicle. Background Technology

[0002] Currently, existing technologies for torque distribution in hybrid vehicles only consider engine start-stop conditions or battery SOC thresholds, which cannot meet the energy-saving and economic requirements of hybrid vehicles and still need to be improved. Summary of the Invention

[0003] This disclosure provides a torque distribution method, distribution device, storage medium, and electronic device for parallel hybrid vehicles, to at least solve the technical problem that existing hybrid vehicles cannot meet the vehicle's energy-saving and economic requirements during torque distribution.

[0004] According to one aspect of the present disclosure, a torque distribution method for a hybrid vehicle is provided, comprising: determining the current operating condition of the vehicle based on current state parameters of the vehicle; obtaining the current state of charge (SOC) of the power battery in the vehicle; and distributing torque between an engine and a drive motor based on the current operating condition and the current SOC.

[0005] In one exemplary embodiment, the current operating condition includes at least one of rapid acceleration, normal driving, and braking.

[0006] In one exemplary embodiment, the rapid acceleration condition or the normal driving condition is determined at least by the throttle opening and the rate of change of the throttle opening.

[0007] In an exemplary embodiment, torque distribution between the engine and the motor based on the current operating condition and the current SOC state includes: when the current operating condition is determined, torque distribution is performed based on a comparison result between the current SOC state and a SOC threshold, wherein the SOC threshold includes at least a first SOC threshold, a second SOC threshold, a third SOC threshold, a fourth SOC threshold, and a fifth SOC threshold that increase sequentially.

[0008] In an exemplary embodiment, when the current operating condition is a rapid acceleration condition, torque distribution is performed based on the comparison result between the current SOC state and a first SOC threshold.

[0009] In an exemplary embodiment, when the current operating condition is a normal driving condition, torque distribution is performed based on comparisons between the current SOC state and a third SOC threshold and a fourth SOC threshold, respectively.

[0010] In an exemplary embodiment, when the current operating condition is a braking condition, torque distribution is performed based on the comparison results of the current SOC state with the second SOC threshold and the fifth SOC threshold, respectively.

[0011] In one exemplary embodiment, when the current SOC state is less than the fifth SOC threshold, torque allocation is performed based on the comparison result of the recovered power and the accessory power. In one exemplary embodiment, determining the indicated torque of the engine based on the gear and engine speed includes: determining the indicated torque of the engine at different gears and different engine speeds, as well as the indicated torque at full throttle.

[0012] Secondly, embodiments of this disclosure also provide a torque distribution device for a parallel hybrid vehicle, comprising: a determining device for determining the current operating condition of the vehicle based on current state parameters of the vehicle; an acquiring device for acquiring the current state of charge (SOC) of the power battery in the vehicle; and a distributing device for distributing torque between the engine and the drive motor based on the current operating condition and the current SOC.

[0013] Thirdly, embodiments of this disclosure also provide a computer-readable storage medium storing a computer program for executing the torque distribution method for hybrid vehicles described in any of the above technical solutions.

[0014] Fourthly, embodiments of this disclosure also provide an electronic device, the electronic device comprising: a processor; a memory for storing processor-executable instructions; the processor being configured to execute the torque distribution method for hybrid vehicles described in any of the above technical solutions.

[0015] As can be seen from the above, the embodiments disclosed herein address the issue from two perspectives: the driving conditions of hybrid vehicles and battery energy management. They distribute torque between the engine and the motor under different operating conditions, which better meets the needs of the driver and energy management, and satisfies the dual requirements of vehicle power and economy.

[0016] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the steps of the torque distribution method for hybrid vehicles provided in this disclosure;

[0019] Figure 2 This is a schematic diagram of the high-efficiency operating range of the engine provided in this disclosure;

[0020] Figure 3 This is a structural block diagram of a torque distribution device for hybrid vehicles provided in this disclosure;

[0021] Figure 4 This is a structural block diagram of the electronic device provided in this disclosure. Detailed Implementation

[0022] The specific embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of this disclosure.

[0023] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this disclosure will be apparent to those skilled in the art.

[0024] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

[0025] These and other features of this disclosure will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0026] It should also be understood that although this disclosure has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this disclosure, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0027] The above and other aspects, features and advantages of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0028] Specific embodiments of the present disclosure are described thereafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure and can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the present disclosure. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of substantially any suitable detailed structures.

[0029] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in still another embodiment,” all of which may refer to one or more of the same or different embodiments according to this disclosure.

[0030] The present disclosure will be further described below with reference to the accompanying drawings and specific embodiments. Example 1

[0031] The first embodiment of this disclosure relates to the field of torque distribution in hybrid vehicles, and more specifically to a torque distribution method for parallel hybrid vehicles.

[0032] This embodiment of the disclosure can utilize the vehicle's condition detection device and the vehicle's battery energy management module to distribute the vehicle's torque based on the vehicle's driving conditions and the power battery's operating conditions.

[0033] like Figure 1 As shown, the torque distribution method for the vehicle includes the following steps:

[0034] S101, determine the current operating condition of the vehicle based on the vehicle's current state parameters.

[0035] In this step, the current operating condition of the vehicle is determined based on the vehicle's current state parameters. The operating condition refers to the vehicle's running status during operation, such as driving, braking, and cruising conditions; the state parameters refer to operating parameters such as accelerator pedal depth, accelerator opening, engine oil temperature, and coolant temperature during vehicle operation.

[0036] In some embodiments, the current operating condition includes at least one of rapid acceleration, normal driving, and braking, wherein the rapid acceleration or normal driving condition is determined at least by the throttle opening and the throttle opening change rate.

[0037] Specifically, for example, when the throttle opening of the vehicle is greater than a first throttle opening limit, and at the same time, the throttle change rate of the vehicle is greater than a first throttle change rate limit, the vehicle enters a rapid acceleration condition, wherein the first throttle opening limit and the first throttle change rate limit can be obtained by looking up a table.

[0038] For example, when the throttle opening of the vehicle is greater than the second throttle opening limit, and at the same time, the throttle change rate of the vehicle is less than the second throttle change rate limit, the vehicle enters normal driving conditions; wherein, the second throttle change rate limit is less than the first throttle change rate limit, and the second throttle opening limit and the second throttle change rate limit can be obtained by looking up a table.

[0039] For example, when the throttle opening is zero, the vehicle enters braking mode; when the braking energy recovery power of the braking energy recovery system is higher than the overall demand of the vehicle accessories and charging, the fuel supply to the vehicle's engine is stopped; when the braking energy recovery power recovered by the braking energy recovery system is lower than the overall demand of the vehicle accessories and charging, the vehicle's engine is stopped.

[0040] S102, Obtain the current SOC state of the power battery in the vehicle.

[0041] After determining the current operating condition of the vehicle through step S101 above, this step obtains the current SOC state of the vehicle's power battery. Here, SOC state refers to the state of charge of the vehicle's power battery, which is the ratio of the current capacity of the power battery to the total battery capacity. The SOC value can be used to evaluate the potential performance of the vehicle's power battery. The SOC value can be obtained through parameters such as the power battery's terminal voltage, charging / discharging current, and internal resistance, and is output by the vehicle's energy management module.

[0042] Furthermore, the State of Charge (SOC) value of a hybrid vehicle directly affects the performance of its power battery. To fully utilize the battery's energy and increase energy recovery, an SOC threshold can be set according to the vehicle's driving conditions and requirements. The battery's state is determined by comparing its current SOC value with the SOC threshold. The SOC threshold includes at least a first SOC threshold, a second SOC threshold, a third SOC threshold, a fourth SOC threshold, and a fifth SOC threshold, which increase sequentially.

[0043] Specifically, the first SOC threshold is a rapid acceleration threshold. At this time, the vehicle is in a rapid acceleration condition, and this threshold is the lowest, so as to fully release electrical energy and meet the rapid acceleration requirements of the vehicle.

[0044] The second SOC threshold is the starting charging threshold. At this time, the vehicle's engine starts to charge. This threshold is low to make full use of electrical energy. At the same time, it takes into account the vehicle's driving needs. When the driving needs are not particularly intense, the vehicle's battery is charged.

[0045] The third SOC threshold is the driving assistance threshold value. At this value, the driver operates the accelerator pedal relatively smoothly, and the vehicle is in a stable driving process. The third SOC threshold is relatively high to achieve efficient operation of the engine; when the vehicle's power demand exceeds the driving capacity that the vehicle's engine can provide alone, the vehicle's electric motor is controlled to provide assistance.

[0046] The fourth SOC threshold is a driving charging threshold value, which corresponds to the upper limit of normal driving charging. Setting this threshold value in a higher range allows the engine to fully utilize its operating range to convert excess energy into electrical energy for the vehicle's power battery.

[0047] The fifth SOC threshold is the recovery threshold value. At this time, the vehicle is in braking condition, and this threshold is set to the highest level to fully recover the energy during the braking process.

[0048] The first SOC threshold, the second SOC threshold, the third SOC threshold, the fourth SOC threshold, and the fifth SOC threshold increase sequentially, and their specific values ​​can be set according to the driver's driving habits.

[0049] S103, based on the current operating conditions and the current SOC state, torque is distributed between the engine and the drive motor.

[0050] After obtaining the current SOC state of the battery in step S102 above, this step performs torque distribution between the engine and the drive motor based on the current operating conditions and the current SOC state. The torque distribution will be explained below based on the vehicle's current operating conditions and the battery's SOC state.

[0051] Specifically, when the vehicle is in driving mode, and the throttle opening exceeds a first throttle opening limit, and simultaneously, the vehicle's throttle change rate exceeds a first throttle change rate limit, the vehicle enters a rapid acceleration condition. At this time, if the State of Charge (SOC) value exceeds a first SOC threshold, the vehicle enters a rapid acceleration mode, and the vehicle's engine operates at the corresponding position on the external characteristic curve corresponding to the current engine speed, i.e., the engine is operating at full load. In this state, the insufficient torque demand of the vehicle is provided by the vehicle's electric motor.

[0052] When the throttle opening is greater than the second throttle opening limit, and at the same time, the throttle change rate of the vehicle is less than the second throttle change rate limit, the vehicle enters normal driving condition; further, the torque of the vehicle is distributed according to the determination result of the energy management demand module.

[0053] Specifically, when the battery's SOC value is less than the fourth SOC threshold, and the vehicle's torque demand does not reach the engine's external characteristic curve, the engine operates at the lower limit of its high-efficiency operating range, the vehicle's generator outputs negative torque, and the battery enters a charging state. When the battery's SOC threshold is greater than the third SOC threshold, and the vehicle's torque demand is greater than the engine's external characteristic torque, the engine operates at the upper limit of its high-efficiency operating range, and the vehicle's insufficient torque is provided by the electric motor. When the battery's SOC threshold is greater than the fourth SOC threshold, and the vehicle's torque demand does not reach the engine's external characteristic curve, the vehicle's engine is shut down, and the vehicle's electric motor provides the vehicle's driving torque, and the vehicle enters a low-load discharge zone.

[0054] The engine's high-efficiency operating zone is the area enclosed by the engine's optimal operating line, which is a line formed by the engine's operating points at a given engine speed where engine efficiency is highest. The engine's high-efficiency operating zone can be determined based on an engine efficiency map (MAP). Typically, the engine's high-efficiency operating zone is as follows: Figure 2 As shown, the upper and lower limits can be taken from the upper and lower limits of the engine speed to fully utilize the engine's speed capability. The upper limit of the engine's efficient operating range can be taken from the maximum torque curve to fully utilize the engine's maximum torque capability, and its lower limit can be determined from the engine efficiency MAP chart to find the operating point where the engine efficiency is the lower limit efficiency value.

[0055] When the throttle opening is zero and the vehicle enters braking mode, the torque of the vehicle is further distributed according to the determination result of the energy management demand module.

[0056] Specifically, when the battery's SOC value is less than the second SOC threshold, the vehicle's engine starts to charge the vehicle's power battery, and the motor performs negative torque rapid forced charging. When the battery's SOC value is less than the fifth SOC threshold, and the vehicle's regenerative braking power is greater than the accessory power, the vehicle stops supplying fuel to the engine to save fuel. At this time, the vehicle's motor outputs negative torque for energy recovery. The vehicle stops supplying fuel to the engine, but does not stop the engine to prevent frequent start-stop cycles caused by the driver accelerating again. At this time, if the driver suddenly presses the accelerator, the engine can quickly resume fuel supply, switching to rapid acceleration mode. When the battery's SOC value is less than the fifth SOC threshold, and the regenerative braking power is less than the accessory power, the vehicle controls the engine to stop, and the vehicle's motor outputs negative torque for energy recovery. When the battery's SOC value is greater than the fifth SOC threshold, the vehicle stops supplying fuel to the engine, simultaneously prohibits the vehicle's motor from performing energy recovery, and controls the vehicle's accessories to actively discharge.

[0057] The power system of a hybrid electric vehicle includes the aforementioned components such as the engine, drive motor, and power battery pack. It also has controllers corresponding to each component, such as the engine controller (EMS), vehicle controller (HCU), motor controller (MCU), battery management system (BMS), and transmission controller (TCU).

[0058] In this embodiment, since the vehicle controller (HCU) provides comprehensive system control judgments, it can acquire accelerator and brake pedal openings, obtain operating status signals of the motor and engine, and comprehensively provide calculations and judgments. Therefore, it is preferable to use the vehicle controller (HCU) to coordinate and control the torque distribution of the vehicle's powertrain. In other embodiments, the torque distribution of the powertrain can also be controlled by the motor controller (MCU), which is not specifically limited here.

[0059] This disclosed embodiment addresses the driving conditions and battery energy management of hybrid vehicles, distributing torque between the engine and motor under different operating conditions. This better meets the needs of the driver and energy management, satisfying both the power and economy requirements of the vehicle. Example 2

[0060] To better implement the above methods, a second aspect of this disclosure also provides a torque distribution device for hybrid vehicles, which can be integrated into electronic devices.

[0061] For example, such as Figure 3 As shown, the torque distribution device for hybrid vehicles may include: a determining module 210, an acquiring module 220, and a distributing module 230, as detailed below:

[0062] (1) Determining module 210, used to determine the current operating condition of the vehicle based on the current state parameters of the vehicle.

[0063] Specifically, the operating condition refers to the vehicle's running status during operation, which includes at least one of the following: rapid acceleration, normal driving, and braking. Further, the rapid acceleration or normal driving condition is determined at least by the throttle opening and the rate of change of throttle opening. The state parameters refer to operating parameters such as accelerator pedal depth, throttle opening, engine oil temperature, and coolant temperature during vehicle operation.

[0064] (2) Acquisition module 220, used to acquire the current SOC state of the power battery in the vehicle.

[0065] Specifically, the SOC state refers to the state of charge of the vehicle's battery, which is the ratio of the current battery capacity to the total battery capacity. The SOC value can be used to evaluate the potential performance of the battery, and the SOC value can be obtained through parameters such as battery terminal voltage, charging and discharging current, and internal resistance.

[0066] (3) Distribution module 230, used to distribute torque between the engine and the drive motor based on the current operating conditions and the current SOC state.

[0067] This disclosed embodiment addresses the driving conditions and battery energy management of hybrid vehicles, distributing torque between the engine and motor under different operating conditions. This better meets the needs of the driver and energy management, satisfying both the power and economy requirements of the vehicle. Example 3

[0068] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0069] Therefore, a third embodiment of this disclosure provides a storage medium, which is a computer-readable medium storing a computer program. When executed by a processor, the computer program implements the torque distribution method for hybrid vehicles provided in this disclosure, including the following steps S11 to S13:

[0070] S11, determine the current operating condition of the vehicle based on the vehicle's current state parameters;

[0071] S12, Obtain the current SOC state of the power battery in the vehicle;

[0072] S13, based on the current operating conditions and the current SOC state, torque is distributed between the engine and the drive motor.

[0073] Furthermore, when the computer program is executed by a processor, it implements other methods provided in any of the above embodiments of this disclosure.

[0074] This disclosed embodiment addresses the driving conditions and battery energy management of hybrid vehicles, distributing torque between the engine and motor under different operating conditions. This better meets the needs of the driver and energy management, satisfying both the power and economy requirements of the vehicle. Example 4

[0075] The fourth embodiment of this disclosure provides an electronic device, such as... Figure 4As shown, the electronic device includes at least a processor 401 and a memory 402. The memory 402 stores a computer program. When the processor 401 executes the computer program in the memory 402, it implements the torque distribution method for hybrid vehicles provided in any embodiment of this disclosure. Exemplarily, the method executed by the computer program in the electronic device is as follows:

[0076] S21, determine the current operating condition of the vehicle based on the vehicle's current state parameters;

[0077] S22, Obtain the current SOC state of the power battery in the vehicle;

[0078] S23, based on the current operating conditions and the current SOC state, torque is distributed between the engine and the drive motor.

[0079] In practice, the aforementioned determining module 210, obtaining module 220, and allocating module 230 are all stored as program units in memory 402, and the processor 401 executes the aforementioned program units stored in memory 402 to implement the corresponding functions.

[0080] This disclosed embodiment addresses the driving conditions and battery energy management of hybrid vehicles, distributing torque between the engine and motor under different operating conditions. This better meets the needs of the driver and energy management, satisfying both the power and economy requirements of the vehicle.

[0081] The aforementioned storage medium may be included in the aforementioned electronic device; or it may exist independently and not be assembled into the electronic device.

[0082] The aforementioned storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to: acquire at least two Internet Protocol (IP) addresses; send a node evaluation request, including at least two IP addresses, to a node evaluation device, wherein the node evaluation device selects an IP address from the at least two IP addresses and returns it; and receive the IP address returned by the node evaluation device; wherein the acquired IP address indicates an edge node in the content delivery network.

[0083] Alternatively, the storage medium may carry one or more programs that, when executed by the electronic device, cause the electronic device to: receive a node evaluation request including at least two Internet Protocol (IP) addresses; select an IP address from the at least two IP addresses; and return the selected IP address; wherein the received IP address indicates an edge node in the content delivery network.

[0084] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the passenger's computer, partially on the passenger's computer, as a standalone software package, partially on the passenger's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer can be connected to the passenger's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0085] It should be noted that the storage medium described in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any storage medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the storage medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0086] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0087] The units described in the embodiments of this disclosure can be implemented in software or hardware. The names of the units are not, in some cases, intended to limit the specific unit.

[0088] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0089] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. 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 fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0090] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0091] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0092] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0093] The foregoing has provided a detailed description of several embodiments of this disclosure. However, this disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of this disclosure, and all such variations and modifications should fall within the scope of protection claimed by this disclosure.

Claims

1. A torque distribution method for a parallel hybrid vehicle, characterized in that, include: The current operating condition of the vehicle is determined based on the vehicle's current state parameters; Obtain the current SOC state of the power battery in the vehicle; Based on the current operating conditions and the current SOC state, torque is distributed between the engine and the drive motor; The current operating condition includes at least one of rapid acceleration, normal driving, and braking conditions. The torque distribution between the engine and electric motor based on the current operating condition and the current state of charge (SOC) includes: When the current operating condition is a rapid acceleration condition, torque distribution is performed based on the comparison result between the current SOC state and the first SOC threshold. When the current operating condition is a normal driving condition, torque distribution is performed based on the comparison results of the current SOC state with the third SOC threshold and the fourth SOC threshold, respectively. When the current operating condition is braking, torque distribution is performed based on the comparison results of the current SOC state with the second SOC threshold and the fifth SOC threshold, respectively. The first SOC threshold, the second SOC threshold, the third SOC threshold, the fourth SOC threshold, and the fifth SOC threshold increase sequentially. The first SOC threshold is the rapid acceleration threshold, the second SOC threshold is the charging start threshold, the third SOC threshold is the driving assistance threshold, the fourth SOC threshold is the driving charging threshold, and the fifth SOC threshold is the regeneration threshold.

2. The torque distribution method according to claim 1, characterized in that, The rapid acceleration condition or the normal driving condition is determined at least by the throttle opening and the rate of change of the throttle opening.

3. The torque distribution method according to claim 1, characterized in that, When the current SOC state is less than the fifth SOC threshold, torque allocation is performed based on the comparison between the recovered power and the accessory power.

4. A torque distribution device for a parallel hybrid vehicle, characterized in that, include: The determination module is used to determine the current operating condition of the vehicle based on the vehicle's current state parameters; The acquisition module is used to acquire the current SOC state of the power battery in the vehicle; The distribution module is used to distribute torque between the engine and the drive motor based on the current operating conditions and the current SOC state; The current operating condition includes at least one of the following: rapid acceleration, normal driving, and braking. The allocation module is further configured to: When the current operating condition is a rapid acceleration condition, torque distribution is performed based on the comparison result between the current SOC state and the first SOC threshold. When the current operating condition is a normal driving condition, torque distribution is performed based on the comparison results of the current SOC state with the third SOC threshold and the fourth SOC threshold, respectively. When the current operating condition is braking, torque distribution is performed based on the comparison results of the current SOC state with the second SOC threshold and the fifth SOC threshold, respectively. The first SOC threshold, the second SOC threshold, the third SOC threshold, the fourth SOC threshold, and the fifth SOC threshold increase sequentially. The first SOC threshold is the rapid acceleration threshold, the second SOC threshold is the charging start threshold, the third SOC threshold is the driving assistance threshold, the fourth SOC threshold is the driving charging threshold, and the fifth SOC threshold is the regeneration threshold.

5. A computer-readable storage medium storing a computer program for performing the torque distribution method according to any one of claims 1-3.

6. An electronic device, the electronic device comprising: processor; Memory used to store the processor's executable instructions; The processor is used to execute the torque distribution method according to any one of claims 1-3.

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