Torque distribution method and device of hybrid electric vehicle and electronic equipment

Abstract

The embodiment of the invention provides a torque distribution method and device of a hybrid electric vehicle and electronic equipment, and relates to the technical field of new energy automobiles, and the torque distribution method of the hybrid electric vehicle comprises the steps that under the condition that the working mode of the hybrid electric vehicle is a hybrid power mode or a pure engine driving mode, the hybrid electric vehicle is started; whether the first motor demand torque of the hybrid electric vehicle is positive torque or not is determined; in response to the situation that the first motor demand torque is not positive torque, the accessory demand torque of the hybrid electric vehicle is determined according to the accessory power of the hybrid electric vehicle; and according to the accessory demand torque, the second motor demand torque of the hybrid electric vehicle is determined, and torque distribution is carried out based on the second motor demand torque. The torque of the motor can be dynamically adjusted when the hybrid electric vehicle works in the hybrid mode or the pure engine driving mode, so that the energy consumption of the motor is effectively controlled, and energy is saved.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a torque distribution method, device and electronic equipment for a hybrid vehicle. Background Art

[0002] The power source of a parallel hybrid electric vehicle includes an electric motor and an engine, and its operating modes can be pure electric motor drive mode, hybrid power mode, or pure engine drive mode. When operating in hybrid power mode, the electric motor may provide power, generate electricity, or neither. When operating in pure engine drive mode, the electric motor neither provides power nor generates electricity, and the vehicle is driven solely by the engine. In some cases, the electric motor is neither providing power nor generating electricity and is still enabled, that is, the motor controls its output torque to zero torque. Under these operating conditions, the motor controller itself still consumes power, and the energy consumption is high, which is not conducive to energy conservation. In related art, under these operating conditions, the accessory torque is directly used as the motor demand torque to maintain a stable battery SOC (State of Charge). However, inaccurate (possibly too large or too small) or unknown vehicle accessory torque can lead to unstable motor power generation, making it impossible to ensure that the battery SOC output power meets expectations. Therefore, to solve the problem of motor energy consumption, a more reasonable torque distribution method is needed. Summary of the Invention

[0003] The embodiments of the present application provide a torque distribution method, device, and electronic device for a hybrid vehicle to alleviate or solve one or more technical problems existing in the prior art.

[0004] In a first aspect, an embodiment of the present application provides a torque distribution method for a hybrid vehicle, comprising:

[0005] When the hybrid vehicle is in a hybrid mode or a pure engine drive mode, determining whether a first motor required torque of the hybrid vehicle is a positive torque;

[0006] In response to the first motor required torque not being a positive torque, determining an accessory required torque of the hybrid vehicle according to an accessory power of the hybrid vehicle;

[0007] A second motor required torque of the hybrid vehicle is determined according to the accessory required torque, and torque distribution is performed based on the second motor required torque.

[0008] In a second aspect, an embodiment of the present application provides a torque distribution device for a hybrid vehicle, comprising:

[0009] a first determining module, configured to determine whether a first motor required torque of the hybrid vehicle is a positive torque when the hybrid vehicle is in a hybrid mode or a pure engine driving mode;

[0010] a second determining module configured to determine an accessory required torque of the hybrid vehicle according to an accessory power of the hybrid vehicle in response to the first motor required torque not being a positive torque;

[0011] The distribution module is configured to determine a second motor required torque of the hybrid vehicle according to the accessory required torque, and perform torque distribution based on the second motor required torque.

[0012] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor implements any method of the embodiments of the present application when executing the computer program.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the method of any one of the embodiments of the present application is implemented.

[0014] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which implements any method of the embodiments of the present application when executed by a processor.

[0015] According to the technical solution of an embodiment of the present application, when a hybrid vehicle is operating in hybrid mode or pure engine drive mode, by determining whether the first motor demand torque of the hybrid vehicle is positive, in response to the first motor demand torque not being positive, the accessory demand torque is determined based on the accessory power of the hybrid vehicle, and then the second motor demand torque is determined based on the accessory demand torque, and torque distribution is performed based on the second motor demand torque. As can be seen, since the accessory demand torque changes in real time, determining the accessory demand torque based on the accessory power ensures the accuracy of the accessory demand torque calculation, thereby determining the motor demand torque and performing torque distribution based on the accurate accessory demand torque. This ensures that when the hybrid vehicle is operating in hybrid mode or pure engine drive mode, the motor is enabled but does not output zero torque. This not only ensures the stability of the SOC output power of the motor power battery and minimizes secondary energy conversion, but also effectively controls motor energy consumption, conserves energy, and performs reasonable and effective torque distribution in the hybrid vehicle, ensuring balanced energy utilization of the vehicle and improving the driving smoothness of the hybrid vehicle.

[0016] The above description is only an overview of the technical solution of this application. In order to more clearly understand the technical means of this application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of this application more obvious and easy to understand, the specific implementation methods of this application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present application and should not be regarded as limiting the scope of the present application.

[0018] Figure 1 A flow chart showing a torque distribution method for a hybrid vehicle provided by an embodiment of the present application is shown;

[0019] Figure 2 A flow chart showing a torque distribution method for a hybrid vehicle provided by another embodiment of the present application is shown;

[0020] Figure 3 A flow chart showing a method for controlling accessory demand torque provided by an embodiment of the present application is shown;

[0021] Figure 4 A block diagram of a torque distribution device for a hybrid vehicle provided by an embodiment of the present application is shown;

[0022] Figure 5 A block diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0024] To facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the related technologies of the embodiments of the present application. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application.

[0025] The following describes in detail the technical solution of this application and how it solves the aforementioned technical problems using specific embodiments. The several specific embodiments listed can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The following describes the embodiments of this application in detail with reference to the accompanying drawings.

[0026] Figure 1 The flowchart of the torque distribution method of the hybrid vehicle provided by the embodiment of the present application is shown. In this embodiment, the torque distribution method of the hybrid vehicle can be applied to the vehicle control system of the parallel hybrid vehicle. Figure 1 As shown, the method may include step S101, step S102 and step S103.

[0027] Step S101 : when the hybrid vehicle is in a hybrid mode or a pure engine drive mode, determining whether a first motor required torque of the hybrid vehicle is a positive torque.

[0028] The operating modes of a hybrid vehicle can include: pure motor drive mode, hybrid power mode, or pure engine drive mode. In pure motor drive mode, the vehicle is driven solely by the motor, with the engine not operating. In hybrid power mode, the motor may provide power assistance, generate electricity, or neither. In pure engine drive mode, the vehicle is driven solely by the engine, with the motor providing neither power assistance nor electricity.

[0029] The first motor demand torque can be understood as the initial motor demand torque before torque adjustment. Prior to executing step S101, torque can be allocated to the hybrid vehicle's motor and engine, respectively, based on the hybrid vehicle's operating mode and the driver's demand torque, to obtain a first motor demand torque and a first engine demand torque. The driver demand torque refers to the driving torque calculated by the hybrid vehicle's vehicle control system based on driver input (such as accelerator pedal position, operating mode selection, etc.). It is used to determine the amount of power required to drive the vehicle from the engine, motor, or hybrid drive system. It can also be referred to as the total demand torque.

[0030] Optionally, during initial torque distribution, if the operating mode is pure motor drive mode, since the engine is not operating, the first motor demand torque is the driver demand torque, and the first engine demand torque is zero. If the operating mode is pure engine drive mode, since the motor is neither assisting nor generating electricity, the first engine demand torque is the driver demand torque, and the first motor demand torque is zero. If the operating mode is hybrid mode, the first motor demand torque is calculated based on information such as the driver demand torque, accessory demand torque, vehicle speed, and SOC. For parallel hybrid vehicles, the first engine demand torque is calculated by subtracting the first motor demand torque from the driver demand torque.

[0031] Step S102 : In response to the first motor required torque not being a positive torque, determining the accessory required torque of the hybrid vehicle according to the accessory power of the hybrid vehicle.

[0032] The required torque of the first motor is not a positive torque, which includes two situations: the required torque of the first motor is a negative torque and a zero torque.

[0033] The accessory power of a hybrid vehicle refers to the power consumed by the vehicle accessories (including electrical and mechanical accessories) other than the drive system (including the engine, motor and transmission system) of the hybrid vehicle.

[0034] Step S103 : determining the second motor required torque of the hybrid vehicle according to the accessory required torque, and performing torque distribution based on the second motor required torque.

[0035] When torque distribution is performed based on the second motor's requested torque, the hybrid vehicle's second engine requested torque can be first calculated based on the second motor's requested torque and the driver's requested torque. The first motor's requested torque is then adjusted based on the second motor's requested torque, and the first engine's requested torque is then adjusted based on the second engine's requested torque. The second motor's requested torque is re-determined based on the accessory's requested torque and is more accurate than the first motor's requested torque. The second engine's requested torque is re-determined based on the accessory's requested torque and is more accurate than the first engine's requested torque.

[0036] As can be seen, in this embodiment, when the hybrid vehicle has a motor assist demand, that is, the motor demand is positive, no correction is made to the motor demand torque. When the hybrid vehicle has a driving power generation or zero torque demand, that is, the motor demand torque is not positive, the motor demand torque is corrected by calculating the accessory demand torque to ensure stable power battery output power.

[0037] According to the technical solution of an embodiment of the present application, when a hybrid vehicle is operating in hybrid mode or pure engine drive mode, by determining whether the first motor demand torque of the hybrid vehicle is positive, in response to the first motor demand torque not being positive, the accessory demand torque is determined based on the accessory power of the hybrid vehicle, and then the second motor demand torque is determined based on the accessory demand torque, and torque distribution is performed based on the second motor demand torque. As can be seen, since the accessory demand torque changes in real time, determining the accessory demand torque based on the accessory power ensures the accuracy of the accessory demand torque calculation, thereby determining the motor demand torque and performing torque distribution based on the accurate accessory demand torque. This ensures that when the hybrid vehicle is operating in hybrid mode or pure engine drive mode, the motor is enabled but does not output zero torque. This not only ensures the stability of the SOC output power of the motor power battery and minimizes secondary energy conversion, but also effectively controls motor energy consumption, conserves energy, and performs reasonable and effective torque distribution in the hybrid vehicle, ensuring balanced energy utilization of the vehicle and improving the driving smoothness of the hybrid vehicle.

[0038] In some embodiments, when determining the required torque of the second motor of the hybrid vehicle based on the required torque of the accessories, the following steps may be performed:

[0039] If the absolute value of the accessory torque request is greater than the absolute value of the first motor torque request, the accessory torque request is determined to be the second motor torque request. If the absolute value of the accessory torque request is less than the absolute value of the first motor torque request, the first motor torque request is determined to be the second motor torque request.

[0040] In other words, the smaller of the accessory torque and the first motor torque is used to determine the second motor torque. Since the accessory torque is negative and the first motor torque is negative or zero, taking the smaller of the two is equivalent to taking the larger of the absolute values of the accessory torque and the first motor torque. This ensures that the determined second motor torque at least meets the energy requirements of the vehicle accessories.

[0041] In some embodiments, when determining the accessory demand torque based on the accessory power of a hybrid vehicle, the following steps are performed: first, the actual accessory torque of the hybrid vehicle is determined based on the accessory power; second, a torque offset corresponding to the actual accessory torque is determined; and third, the accessory demand torque of the hybrid vehicle is determined based on the actual accessory torque and the torque offset. The accessory demand torque and the actual accessory torque are both negative values.

[0042] The torque offset corresponding to the actual torque of the accessory is pre-stored in the vehicle control system. When determining the required torque of the accessory, the pre-stored torque offset in the vehicle control system can be obtained for calculation.

[0043] When determining the accessory required torque of the hybrid vehicle based on the actual accessory torque and the torque offset, the actual accessory torque and the torque offset may be added together, and the sum is the accessory required torque.

[0044] In some embodiments, when determining the torque offset corresponding to the actual torque of the accessory, the accessory demand torque can be dynamically adjusted according to the output power of the power battery of the hybrid vehicle. When the absolute value of the required torque of the first motor is less than a preset torque threshold and the current deviation of the power battery of the hybrid vehicle is greater than a preset current threshold, the torque offset is adjusted according to the current deviation of the power battery. The current deviation is the difference between the actual current of the battery and the required current of the battery. The actual current of the battery refers to the actual current currently output by the power battery. The required current of the battery refers to the required current calculated based on the SOC of the power battery, which usually needs to be comprehensively calculated in combination with factors such as the capacity of the power battery, the change in SOC, and time. There is a clear correspondence between the battery demand current and the SOC. The correspondence can be pre-calculated and stored. When the current deviation needs to be known, the battery demand current can be determined based on the SOC of the power battery and the correspondence, and then the current deviation is determined based on the determined battery demand current and the actual current of the battery.

[0045] When the absolute value of the required torque of the first motor is greater than or equal to the preset torque threshold, or the current deviation of the power battery is less than or equal to the preset current threshold, it indicates that the output power of the power battery has entered a stable state, and there is no need to adjust the torque offset.

[0046] Optionally, when adjusting the torque offset according to the current deviation of the power battery, different adjustment strategies may be adopted for the torque offset according to the magnitude relationship between the actual battery current and the required battery current.

[0047] When the actual battery current is greater than the required battery current, the torque offset is increased by a first adjustment step, which is a negative value. Since this indicates excessive battery discharge and the need for increased power generation, the torque offset is increased by a negative value, i.e., the first adjustment step.

[0048] If the actual battery current is less than the required battery current, the torque offset is increased by a second adjustment step; the second adjustment step is a positive value. Because a smaller actual battery current indicates that the power battery is overcharged and power generation needs to be reduced, the torque offset is increased by a positive torque value, i.e., the second adjustment step.

[0049] When the actual battery current is equal to the required battery current, it indicates that the output power of the power battery has entered a stable state, and there is no need to adjust the torque offset.

[0050] After adjusting the torque offset, the pre-stored torque offset in the vehicle control system can be updated according to the adjusted torque offset, so that when calculating the accessory required torque, the accurate torque offset can be obtained from the vehicle control system to ensure the accuracy of the accessory required torque calculation.

[0051] Figure 2 A flow chart of a torque distribution method for a hybrid vehicle provided by another embodiment of the present application is shown. In this embodiment, the torque distribution method for a hybrid vehicle can be applied to a vehicle control system of a parallel hybrid vehicle. Figure 2 As shown, the method may include steps S201 to S209.

[0052] Step S201 : obtaining the driver's required torque of the hybrid vehicle.

[0053] Step S202 : allocating a first motor demand torque to the motor and a first engine demand torque to the engine according to the current working mode of the hybrid vehicle and the driver's demand torque.

[0054] During the initial torque distribution, if the operating mode is the pure motor drive mode, step S203 is executed. If the operating mode is the hybrid power mode, step S204 is executed. If the operating mode is the pure engine drive mode, step S205 is executed.

[0055] For example, the driver demand torque is represented by T Drv , the first motor required torque is expressed as T MT1 , the first engine demand torque is expressed as T ENG1 .

[0056] Step S203 : determining that the first motor demand torque is the driver demand torque and the first engine demand torque is zero torque.

[0057] If the working mode is pure motor driving mode, since the engine is not working, the first motor demand torque is the driver demand torque, and the first engine demand torque is zero torque. MT1 =TDrv , T ENG1 =0.

[0058] In step S204 , a first motor required torque is calculated based on the driver required torque, vehicle speed, SOC of the power battery, and motor torque limit, and the difference between the driver required torque and the first motor required torque is determined as the first engine required torque.

[0059] The first engine required torque can be calculated by the following formula: ENG1 =T Drv -T MT1 Since the method of comprehensively calculating the first motor demand torque based on the driver demand torque, vehicle speed, SOC of the power battery and motor torque limit is already an existing technology, it will not be described in detail.

[0060] Step S205 , determining that the first engine demand torque is the driver demand torque and the first motor demand torque is zero torque.

[0061] If the working mode is pure engine drive mode, since the motor neither assists nor generates electricity, the first engine demand torque is the driver demand torque, and the first motor demand torque is zero torque. ENG1 =T Drv , T MT1 =0.

[0062] Step S206: Determine whether the torque required by the first motor is positive torque. If not, execute step S207; if so, execute step S209.

[0063] The required torque of the first motor is not a positive torque, which includes two situations: the required torque of the first motor is a negative torque and a zero torque.

[0064] Step S207 : Calculate the accessory required torque and take the smaller of the accessory required torque and the first motor required torque to obtain the second motor required torque.

[0065] The smaller of the accessory torque and the first motor torque is equivalent to the larger of the absolute value of the accessory torque and the absolute value of the first motor torque. Therefore, if the absolute value of the accessory torque is greater than the absolute value of the first motor torque, the accessory torque is determined to be the second motor torque. If the absolute value of the accessory torque is less than the absolute value of the first motor torque, the first motor torque is determined to be the second motor torque.

[0066] The calculation method of the required torque of the second motor can be expressed as the following formula: T MT2 =min(T MT1 ,T auxDes ). Among them, T AuxDesIndicates the accessory demand torque.

[0067] Step S208 : Calculate the second engine required torque according to the driver required torque and the second motor required torque.

[0068] The calculation method of the second engine required torque can be expressed as the following formula: ENG2 =T Drv -T MT2 .

[0069] Step S209: Do not adjust the first motor required torque and the first engine required torque.

[0070] Among them, the first motor demand torque and the first engine demand torque are not adjusted, indicating that T MT2 =T MT1 , T ENG2 =T ENG1 .

[0071] As can be seen, according to the technical solution of the embodiment of the present application, when the hybrid vehicle is operating in a pure motor drive mode, since the motor demand torque is positive, no correction is required. When the hybrid vehicle is operating in a hybrid mode or a pure engine drive mode, the first motor demand torque of the hybrid vehicle is determined to be positive. If the first motor demand torque is not positive, the accessory demand torque is determined based on the accessory power of the hybrid vehicle. Then, based on the accessory demand torque and the driver demand torque, the second motor demand torque and the second engine demand torque of the hybrid vehicle are determined, and the torque is adjusted based on the second motor demand torque and the second engine demand torque. It can be seen that since the accessory demand torque changes in real time, the accessory demand torque is determined based on the accessory power, which ensures the accuracy of the accessory demand torque calculation, thereby determining the motor demand torque and performing torque distribution based on the accurate accessory demand torque, ensuring that when the hybrid vehicle operates in hybrid mode or pure engine drive mode, the motor is enabled but zero torque does not occur, thereby not only ensuring the SOC output power of the motor power battery is stable and minimizing the secondary conversion of energy, but also effectively controlling the motor energy consumption, saving energy, and performing reasonable and effective torque distribution for the hybrid vehicle, ensuring the balanced use of vehicle energy, and improving the driving smoothness of the hybrid vehicle.

[0072] Figure 3 FIG. 1 is a flow chart showing a method for controlling accessory torque requirements according to an embodiment of the present application. Figure 3 As shown, the method may include steps S301 to S307.

[0073] Step S301 : Initialize the torque offset corresponding to the accessory required torque to zero.

[0074] For example, T OfsLck Represents the torque offset, then after initialization T OfsLck =0.

[0075] Step S302 : determining the accessory power of the vehicle accessories of the hybrid vehicle, and calculating the actual accessory torque according to the accessory power.

[0076] Among them, the accessory power of automobile accessories refers to the power consumed by automobile accessories other than the drive system (including engine, motor and transmission system) on hybrid vehicles. Automobile accessories include electrical and mechanical accessories, such as air conditioning, infotainment system, etc.

[0077] Step S303: Obtain a pre-stored torque offset, and calculate the accessory required torque based on the torque offset and the actual torque of the accessory.

[0078] The pre-stored torque offset refers to a torque offset pre-stored in the vehicle control system and corresponding to the actual torque of the accessory.

[0079] Optionally, the sum of the actual accessory torque and the torque offset is determined as the accessory required torque. The calculation method of the accessory required torque can be expressed as the following formula: AuxDes =T Aux +T OfsLck Among them, T Aux Indicates the actual torque of the accessory.

[0080] Step S304: Determine whether the absolute value of the required torque of the first motor is less than a preset torque threshold and the current deviation of the power battery is greater than a preset current threshold. If so, proceed to step S305; if not, return to step S303.

[0081] Step S305: Determine whether the actual battery current is greater than the required battery current. If so, proceed to step S306; if not, proceed to step S307.

[0082] Step S306: Increase the torque offset by a first adjustment step, where the first adjustment step is a preset negative value.

[0083] Step S307: increasing the torque offset by a second adjustment step, where the second adjustment step is a preset positive value.

[0084] After adjusting the torque offset, the accessory required torque can be recalculated based on the adjusted torque offset. Optionally, the torque offset pre-stored in the vehicle control system is updated to the adjusted torque offset.

[0085] Depend on Figure 3As can be seen, the accessory demand torque is regulated using a closed-loop control strategy. After executing step S306 or step S307, the system returns to step S303 to recalculate the accessory demand torque, and the closed-loop system enters a stable state. By calculating the actual accessory torque based on the vehicle's accessory power and dynamically adjusting the torque offset corresponding to the actual accessory torque based on the power battery's output power (i.e., the relationship between the actual battery current and the battery demand current), the accessory demand torque is dynamically adjusted accordingly, thereby ensuring the accuracy of the accessory demand torque, further ensuring the stability of the power battery's output power, and improving the overall economic efficiency of the hybrid vehicle.

[0086] Corresponding to the application scenario and method of the method provided in the embodiment of the present application, the embodiment of the present application also provides a torque distribution device for a hybrid vehicle.

[0087] Figure 4 A block diagram of a torque distribution device for a hybrid vehicle provided by an embodiment of the present application is shown. Figure 4 As shown, the torque distribution device of the hybrid vehicle includes:

[0088] A first determining module 41 is configured to determine whether a first motor required torque of the hybrid vehicle is a positive torque when the hybrid vehicle is in a hybrid mode or a pure engine driving mode;

[0089] a second determining module 42 for determining an accessory required torque of the hybrid vehicle according to an accessory power of the hybrid vehicle in response to the first motor required torque not being a positive torque;

[0090] The distribution module 43 is configured to determine a second motor required torque of the hybrid vehicle according to the accessory required torque, and perform torque distribution based on the second motor required torque.

[0091] In some embodiments, when determining the second motor required torque of the hybrid vehicle according to the accessory required torque, the allocation module 43 performs the following steps:

[0092] If the absolute value of the accessory required torque is greater than the absolute value of the first motor required torque, determining that the accessory required torque is the second motor required torque;

[0093] If the absolute value of the accessory required torque is smaller than the absolute value of the first motor required torque, the first motor required torque is determined to be the second motor required torque.

[0094] In some embodiments, when determining the accessory required torque of the hybrid vehicle according to the accessory power of the hybrid vehicle, the second determination module 42 performs the following steps:

[0095] determining an actual torque of an accessory of the hybrid vehicle based on the accessory power;

[0096] determining a torque offset corresponding to the actual torque of the accessory;

[0097] The accessory required torque is determined according to the accessory actual torque and the torque offset.

[0098] In some embodiments, the second determination module 42 performs the following steps when determining the torque offset corresponding to the actual torque of the accessory:

[0099] When the absolute value of the required torque of the first motor is less than a preset torque threshold and the current deviation of the power battery of the hybrid vehicle is greater than a preset current threshold, adjusting the torque offset according to the current deviation;

[0100] The current deviation is the difference between the actual battery current and the required battery current.

[0101] In some embodiments, when adjusting the torque offset according to the current deviation, the second determination module 42 performs the following steps:

[0102] When the actual battery current is greater than the required battery current, the torque offset is increased by a first adjustment step; the first adjustment step is a negative value;

[0103] When the actual battery current is less than the required battery current, the torque offset is increased by a second adjustment step; the second adjustment step is a positive value.

[0104] In some embodiments, the apparatus further comprises:

[0105] A second distribution module is used to distribute torque to the motor and engine of the hybrid vehicle respectively according to the operating mode of the hybrid vehicle and the driver's required torque before determining whether the actual torque of the motor of the hybrid vehicle is positive torque when the operating mode of the hybrid vehicle is the hybrid mode or the pure engine drive mode, so as to obtain the first motor required torque and the first engine required torque; the operating mode includes: the pure motor drive mode, the hybrid mode or the pure engine drive mode.

[0106] In some embodiments, the distribution module 43 performs the following steps when distributing torque based on the required torque of the second motor:

[0107] calculating a second engine required torque of the hybrid vehicle according to the second motor required torque and the driver required torque;

[0108] The first motor request torque is adjusted according to the second motor request torque, and the first engine request torque is adjusted according to the second engine request torque.

[0109] According to the apparatus of an embodiment of the present application, when a hybrid vehicle is operating in hybrid mode or pure engine drive mode, by determining whether the first motor demand torque of the hybrid vehicle is positive, in response to the first motor demand torque not being positive, the accessory demand torque is determined based on the accessory power of the hybrid vehicle, and then the second motor demand torque is determined based on the accessory demand torque, and torque distribution is performed based on the second motor demand torque. As can be seen, since the accessory demand torque changes in real time, determining the accessory demand torque based on the accessory power ensures the accuracy of the accessory demand torque calculation, thereby determining the motor demand torque and performing torque distribution based on the accurate accessory demand torque. This ensures that when the hybrid vehicle is operating in hybrid mode or pure engine drive mode, the motors are enabled but do not experience zero torque. This not only ensures a stable SOC output power of the motor power battery and minimizes secondary energy conversion, but also effectively controls motor energy consumption, conserves energy, and performs reasonable and effective torque distribution in the hybrid vehicle, ensuring balanced energy use in the vehicle and improving the driving smoothness of the hybrid vehicle.

[0110] The functions of each module in each device in the embodiments of the present application can be found in the corresponding description in the above method, and have corresponding beneficial effects, which will not be repeated here.

[0111] Figure 5 A block diagram of an electronic device for implementing the embodiments of the present application. Figure 5 As shown, the electronic device includes a memory 501 and a processor 502. The memory 501 stores a computer program that can be executed on the processor 502. When the processor 502 executes the computer program, the method of the above embodiment is implemented. The number of memory 501 and processor 502 can be one or more. In a specific implementation, the electronic device may also include a communication interface 503 for communicating with external devices and performing data exchange.

[0112] In a specific implementation, if the memory 501, the processor 502, and the communication interface 503 are implemented independently, the memory 501, the processor 502, and the communication interface 503 can be connected to each other via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0113] Optionally, in a specific implementation, if the memory 501 , the processor 502 , and the communication interface 503 are integrated on a chip, the memory 501 , the processor 502 , and the communication interface 503 may communicate with each other through an internal interface.

[0114] An embodiment of the present application provides a computer-readable storage medium storing a computer program, which implements the method provided in the embodiment of the present application when the program is executed by a processor.

[0115] An embodiment of the present application provides a computer program product, including a computer program, which implements the method provided in the embodiment of the present application when executed by a processor.

[0116] An embodiment of the present application also provides a chip, which includes a processor for calling and executing instructions stored in the memory from the memory, so that a communication device equipped with the chip executes the method provided in the embodiment of the present application.

[0117] An embodiment of the present application also provides a chip, including: an input interface, an output interface, a processor and a memory. The input interface, the output interface, the processor and the memory are connected through an internal connection path. The processor is used to execute the code in the memory. When the code is executed, the processor is used to execute the method provided in the embodiment of the application.

[0118] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. It is worth noting that the processor may be a processor that supports the Advanced RISC Machines (ARM) architecture.

[0119] Furthermore, optionally, the above-mentioned memory may include a read-only memory and a random access memory. The memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may include a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available. For example, static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM) and direct memory bus random access memory (DR RAM).

[0120] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another.

[0121] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0122] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0123] Any process or method described in the flowchart or otherwise described herein can be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process. The scope of the preferred embodiments of the present application includes other implementations in which the functions may be performed in a different order than shown or discussed, including performing the functions substantially simultaneously or in reverse order depending on the functions involved.

[0124] The logic and / or steps described in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processor or other system that can fetch instructions from an instruction execution system, apparatus or device and execute instructions), or used in combination with such instruction execution systems, apparatuses or devices.

[0125] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. All or part of the steps of the above embodiment method can be completed by instructing the relevant hardware through a program, which can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0126] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing module, or each unit may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. If the aforementioned integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium. The storage medium may be a read-only memory, a magnetic disk, or an optical disk, etc.

[0127] The above is merely an exemplary embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope described in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A torque distribution method for a hybrid vehicle, characterized in that: include: When the hybrid vehicle is in a hybrid mode or a pure engine drive mode, determining whether a first motor required torque of the hybrid vehicle is a positive torque; In response to the first motor required torque not being a positive torque, determining an accessory required torque of the hybrid vehicle according to an accessory power of the hybrid vehicle; A second motor required torque of the hybrid vehicle is determined according to the accessory required torque, and torque distribution is performed based on the second motor required torque.

2. The method according to claim 1, characterized in that Determining the second motor required torque of the hybrid vehicle according to the accessory required torque includes: If the absolute value of the accessory required torque is greater than the absolute value of the first motor required torque, determining that the accessory required torque is the second motor required torque; If the absolute value of the accessory required torque is smaller than the absolute value of the first motor required torque, the first motor required torque is determined to be the second motor required torque.

3. The method according to claim 1, characterized in that The step of determining the accessory required torque of the hybrid vehicle according to the accessory power of the hybrid vehicle includes: determining an actual torque of an accessory of the hybrid vehicle based on the accessory power; determining a torque offset corresponding to the actual torque of the accessory; The accessory required torque is determined according to the accessory actual torque and the torque offset.

4. The method according to claim 3, characterized in that Determining the torque offset corresponding to the actual torque of the accessory includes: When the absolute value of the required torque of the first motor is less than a preset torque threshold and the current deviation of the power battery of the hybrid vehicle is greater than a preset current threshold, adjusting the torque offset according to the current deviation; The current deviation is the difference between the actual battery current and the required battery current.

5. The method according to claim 4, characterized in that The adjusting the torque offset according to the current deviation includes: When the actual battery current is greater than the required battery current, the torque offset is increased by a first adjustment step; the first adjustment step is a negative value; When the actual battery current is less than the required battery current, the torque offset is increased by a second adjustment step; the second adjustment step is a positive value.

6. The method according to claim 1, characterized in that Before determining whether the actual torque of the motor of the hybrid vehicle is positive torque when the hybrid vehicle is in the hybrid mode or the pure engine drive mode, the method further includes: According to the working mode of the hybrid vehicle and the driver's required torque, torque is distributed to the motor and engine of the hybrid vehicle respectively to obtain the first motor required torque and the first engine required torque; the working mode includes: pure motor drive mode, the hybrid mode or the pure engine drive mode.

7. The method according to claim 6, characterized in that The performing torque distribution based on the required torque of the second motor includes: calculating a second engine required torque of the hybrid vehicle according to the second motor required torque and the driver required torque; The first motor request torque is adjusted according to the second motor request torque, and the first engine request torque is adjusted according to the second engine request torque.

8. A torque distribution device for a hybrid vehicle, characterized in that: include: a first determining module, configured to determine whether a first motor required torque of the hybrid vehicle is a positive torque when the hybrid vehicle is in a hybrid mode or a pure engine driving mode; a second determining module configured to determine an accessory required torque of the hybrid vehicle according to an accessory power of the hybrid vehicle in response to the first motor required torque not being a positive torque; The distribution module is configured to determine a second motor required torque of the hybrid vehicle according to the accessory required torque, and perform torque distribution based on the second motor required torque.

9. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory, wherein the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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