Torque control method, device and equipment of power system, and storage medium

Abstract

The application discloses a torque control method, device and equipment of a power system and a storage medium, and the method comprises the following steps: when a torque request in a hybrid mode is received, a torque determination value at the current time is obtained, the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by engine intake air volume; whether the torque request meets torque execution conditions is determined according to the torque determination value, if yes, the torque request is responded to, so that the engine and the motor execute the corresponding torque request; in the above manner, whether the torque request of the engine meets the demand is determined by the engine to-be-executed torque, and since the engine to-be-executed torque is a real-time executable maximum torque determined by the intake air volume, the vehicle power demand is met, the hybrid torque control accuracy is improved, and the problem of insufficient vehicle power caused by the external characteristic torque of the engine being greater than the actual execution torque is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hybrid vehicles, in particular to a torque control method, device and equipment of power system and a storage medium. BACKGROUND

[0002] Hybrid power is an important technical path for solving fossil energy shortage, environmental pollution, greenhouse effect and achieving double carbon target. A common hybrid torque control strategy is that a hybrid control module analyzes and corrects torque according to battery, engine external characteristic torque, vehicle speed and the like to generate a torque instruction for controlling the engine and the drive motor to respond to the corresponding torque instruction.

[0003] However, since the engine of a hybrid vehicle is started and connected to work more frequently than a traditional vehicle during operation, and in a period after the engine is started, the engine is easily corrected according to the external characteristic torque when the water temperature is low, the oil pressure is low, and the EGR system does not reach the opening condition, etc., which can cause power shortage of the vehicle and poor driving experience in this working condition. Therefore, the existing hybrid torque control of the hybrid vehicle has the problem of low accuracy. SUMMARY

[0004] The main purpose of the present application is to provide a torque control method, device and equipment of power system and a storage medium, which aims to solve the technical problem of low accuracy of hybrid torque control in the power system of the existing hybrid vehicle.

[0005] To achieve the above-mentioned purpose, the present application provides a torque control method of power system, which comprises the following steps:

[0006] When receiving a torque request in a hybrid power mode, a torque determination value at the current time is obtained, the torque determination value comprising an engine to-be-executed torque and a motor external characteristic torque, the engine to-be-executed torque being determined by engine intake air volume;

[0007] According to the torque determination value, it is determined whether the torque request meets a torque execution condition, and if so, the torque request is responded to, so that the engine and the motor execute the corresponding torque request.

[0008] Preferably, the torque request comprises an engine torque request,

[0009] The step of determining whether the torque request meets the torque execution condition according to the torque determination value, and if so, responding to the torque request so that the engine and the motor execute the corresponding torque request, comprises:

[0010] Comparing the engine torque request with the engine to-be-executed torque;

[0011] If the engine torque request is less than or equal to the engine to be executed torque, it is determined that the engine torque request meets the execution condition, and then the engine is controlled to execute the engine torque request in response to the engine torque request.

[0012] Preferably, after the step of comparing the engine torque request and the engine to be executed torque, the method comprises:

[0013] If the engine torque request is greater than the engine to be executed torque, the engine torque correction amount is calculated according to the engine to be executed torque and the engine external characteristic torque;

[0014] The engine torque request is corrected according to the engine torque correction amount to obtain a new engine torque request, and the step of obtaining the torque judgment value at the current time when receiving the torque request in the hybrid mode is executed.

[0015] Preferably, the torque request further comprises a motor torque request,

[0016] The step of determining whether the torque request meets the torque execution condition according to the torque judgment value, and if so, controlling the engine and the motor to execute the corresponding torque request in response to the torque request, comprises:

[0017] Comparing the motor torque request and the motor external characteristic torque;

[0018] If the motor torque request is less than or equal to the motor external characteristic torque, it is determined that the motor torque request meets the execution condition, and then the motor is controlled to execute the motor torque request in response to the motor torque request.

[0019] Preferably, after the step of comparing the motor torque request and the motor external characteristic torque, the method comprises:

[0020] If the motor torque request is greater than the motor external characteristic torque, the motor torque correction amount is calculated according to the motor battery state;

[0021] The motor torque request is corrected according to the motor torque correction amount to obtain a new motor torque request, and the step of obtaining the torque judgment value at the current time when receiving the torque request in the hybrid mode is executed.

[0022] Preferably, before the step of obtaining the torque judgment value at the current time when receiving the torque request in the hybrid mode, the method comprises:

[0023] Obtaining the accelerator pedal information, the transmission shaft speed information, and calculating the vehicle demand torque;

[0024] According to the whole vehicle demand torque, the battery data and the vehicle speed, the torque is analyzed and the torque request is calculated.

[0025] Preferably, the engine to-be-executed torque is a maximum executed torque corresponding to a real-time torque in a preset time, and the maximum executed torque is dynamically updated based on a preset frequency.

[0026] In addition, to achieve the above object, the application further provides a torque control device of a power system, which comprises:

[0027] The acquisition module is configured to acquire a torque determination value at a current time when a torque request in a hybrid mode is received, the torque determination value comprising an engine to-be-executed torque and an external characteristic torque of the motor, and the engine to-be-executed torque being determined by an engine intake amount.

[0028] The response module is configured to determine whether the torque request meets a torque execution condition according to the torque determination value, and if yes, to respond to the torque request so that the engine and the motor execute a corresponding torque request.

[0029] In addition, to achieve the above object, the application further provides a torque control device of a power system, which comprises a memory, a processor and a torque control program of the power system stored in the memory and executable on the processor, and the torque control program of the power system, when executed by the processor, implements the steps of the torque control method of the power system.

[0030] In addition, to achieve the above object, the application further provides a computer readable storage medium, which stores a torque control program of a power system, and the torque control program of the power system, when executed by a processor, implements the steps of the torque control method of the power system.

[0031] The torque control method, device, equipment and storage medium of the power system are provided in the embodiment of the application, when the torque request in the hybrid mode is received, the torque determination value at the current time is acquired, the torque determination value includes the engine to-be-executed torque and the motor external characteristic torque, the engine to-be-executed torque is determined by the engine air intake; whether the torque request meets the torque execution condition is determined according to the torque determination value, if yes, the corresponding torque request is executed by the engine and the motor in response to the torque request; in the above manner, when the torque request is received, the torque determination value is acquired, the torque determination value includes the engine to-be-executed torque and the motor external characteristic torque, whether the torque request of the engine meets the demand is determined by the engine to-be-executed torque, and the torque request is responded when the demand is met, since the engine to-be-executed torque is the real-time executable maximum torque determined by the air intake, the torque request of the engine meets the vehicle power demand, the hybrid torque control accuracy is improved, and the problem of insufficient vehicle power caused by the engine external characteristic torque being greater than the actual executed torque is solved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The schematic diagram of the hybrid control system related to the embodiment of the application is shown.

[0033] Figure 2 The flowchart of the torque control method of the power system of the first embodiment of the application is shown.

[0034] Figure 3 The function module schematic diagram of the torque control device of the preferred embodiment of the power system of the application is shown.

[0035] Figure 4 The terminal device structure schematic diagram of the hardware running environment related to the embodiment of the application is shown.

[0036] Explanation of the attached drawings:

[0037]

[0038] The implementation, functional features and advantages of the application will be further explained with reference to the embodiments and the attached drawings. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application.

[0040] The main solution of the embodiment of the application is:

[0041] Hybrid is an important technical path for solving fossil energy shortage, environmental pollution, greenhouse effect and achieving double carbon target of automobile. A common hybrid torque control strategy is that the hybrid control module analyzes and corrects the torque according to the battery, engine external characteristic torque, vehicle speed and the like, generates a torque instruction to control the engine and the drive motor to respond to the corresponding torque instruction.

[0042] Since the engine of the hybrid vehicle is started and connected to work more frequently during operation than the traditional vehicle, and in a period of time after the engine is started, the engine actual execution torque is less than the torque demand corresponding to the torque instruction when the engine is corrected according to the external characteristic torque due to low water temperature, low oil pressure and the EGR system not reaching the opening condition, etc., resulting in insufficient vehicle power and poor driving experience in this working condition.

[0043] The present application provides a solution suitable for the field of hybrid vehicles to solve the technical problem of low accuracy of hybrid torque control of existing hybrid vehicles.

[0044] As shown in Figure 1 , Figure 1 The present application relates to a hybrid control system schematic diagram, wherein the hybrid control system comprises: an accelerator pedal 1, an engine control module (ECM) 2, a drive motor controller (MCU) 3, a battery management system (BMS) 4, a hybrid control module (HCM) 5, an engine (ICE) 6, an electric motor (EM) 7, a battery 8 and a CAN network 9.

[0045] The present application adds an engine control module on the CAN network (Controller Area Network, CAN network), calculates the engine dynamic engine execution torque, i.e. the current maximum torque signal T capacity , if the engine state does not reach the set state (such as low engine water temperature, low oil pressure and the EGR system not reaching the opening condition, etc., wherein EGR system is the abbreviation of Exhaust Gas Recirculation, exhaust gas recirculation system), the current maximum torque signal T capacity is lower than the engine external characteristic torque, the hybrid control module (HCM) 5 analyzes and corrects the torque through T capacity , battery SOC, vehicle speed, throttle and the like, sends torque request or torque instruction to ECM and motor controller MCU, and compensates for the lack of engine torque by the drive motor to meet the torque demand of the whole vehicle, thereby improving the overall power of the vehicle.

[0046] In the embodiment, only the engine to-be-executed torque needs to be added on the CAN communication matrix, and the corresponding control software needs to be slightly changed, without the need of hardware change, so as to achieve the optimization goal of the torque control strategy of the power system of the hybrid vehicle, improve the accuracy of the torque control of the power system without increasing the cost, reduce the calibration workload of the starting torque response of the engine in the hybrid mode, shorten the calibration period and cost of the hybrid vehicle, and eliminate the problem of insufficient starting torque response of the engine in the hybrid mode.

[0047] Reference Figure 2 , Figure 2 The application provides a torque control method of a power system, an operation process of the torque control method of the power system is realized based on a hybrid control system, the torque control method of the power system is applied to a hybrid control module, and the torque control method of the power system comprises the following steps.

[0048] In step S10, when a torque request in a hybrid mode is received, a torque determination value at the current time is obtained, the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by engine intake air volume.

[0049] In step S20, whether the torque request meets a torque execution condition is determined according to the torque determination value, and if yes, the torque request is responded to, so that the engine and the motor execute the corresponding torque request.

[0050] In the embodiment, it needs to be explained that the application scenario of the application is that after the engine of a hybrid vehicle is started, the torque control accuracy of the hybrid vehicle is low, the engine torque cannot meet the demand, and problems such as insufficient vehicle power and poor driving experience occur. In order to make up for the insufficient engine torque, the control strategy of the application can correct the torque request of driving to meet the demand of the vehicle. Specifically, when the torque request is received, a torque determination value is obtained, the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, whether the torque request of the engine meets the demand is determined through the engine to-be-executed torque, and the torque request is responded to when the demand is met. Since the engine to-be-executed torque is a real-time executable maximum torque determined by the intake air volume, the torque control accuracy of the hybrid torque is improved, and the problem of insufficient vehicle power caused by the external characteristic torque of the engine being greater than the actual executed torque is solved.

[0051] The specific steps are as follows:

[0052] Step S10, when receiving the torque request in the hybrid mode, the torque determination value at the current time is obtained, the torque determination value includes the engine to be executed torque and the motor external characteristic torque, the engine to be executed torque is determined by the engine intake air quantity;

[0053] It should be noted that the hybrid mode refers to the hybrid system of the hybrid vehicle in the mode of providing power by the engine and the driving motor.

[0054] In the embodiment, when receiving the torque request in the hybrid mode, the torque determination value at the current time is required to determine the torque request and determine whether to execute the torque request. The torque determination value includes the engine to be executed torque and the motor external characteristic torque, wherein the engine to be executed torque is determined by the engine intake air quantity based on the preset calculation model. Specifically, according to the key parameter values of the engine water temperature, oil temperature, oil pressure and the intake air quantity calculation model, the maximum intake air quantity of the engine is calculated, and the maximum intake air quantity is input into the preset calculation model to calculate the engine to be executed torque. The intake air quantity calculation model and the preset calculation model can be obtained from the engine control software or program set by the engine developer, and the maximum intake air quantity and the to-be-executed torque obtained by the above two models belong to the calibration value. Since there is a lag or deviation between the time of obtaining each parameter for calculating the torque and the actual execution time of the torque in actual application, the maximum intake air quantity and the engine to be executed torque are a receivable range value.

[0055] It can be understood that the engine control module calculates the real-time engine to be executed torque through the maximum intake air quantity of the engine, and sends it to the hybrid control module through the CAN network. The engine to be executed torque is used as the determination threshold of the torque request sent by the hybrid control module to the engine control module, so as to determine the response of the torque control system to the torque request of the engine. Since there are multiple real-time execution torques calculated in real time within a preset time, the torque corresponding to the maximum value of the multiple real-time execution torques is selected, that is, the engine to be executed torque. Since the engine to be executed torque is close to the actual executable torque of the engine, the problem of insufficient power of the vehicle is avoided.

[0056] Further, the engine to-be-executed torque is a maximum executed torque corresponding to a real-time torque in a preset time, and the maximum executed torque is dynamically updated based on a preset frequency. It can be understood that the update time of the engine to-be-executed torque is adjusted according to the response requirement of the hybrid system to the engine, and the higher the response requirement of the hybrid system to the engine, the shorter the update time of the engine to-be-executed torque. Since the engine to-be-executed torque is calculated by the engine intake amount and the preset calculation model, the engine intake amount is the maximum intake amount in the update time, and therefore, the acquisition time of the engine intake amount and the update time of the engine to-be-executed torque are consistent, both of which belong to dynamic update.

[0057] Further, the motor external characteristic torque is a fixed value, which is set according to the performance of the motor when the motor is manufactured and delivered. Based on the motor external characteristic torque, it is determined whether the torque request of the motor meets the power demand of the vehicle, and the torque request can be executed in response.

[0058] Further, before the torque determination value at the current time is obtained after receiving the torque request in the hybrid mode, the following steps are included:

[0059] Step A1, obtaining the throttle pedal information and the transmission shaft speed information, and calculating the vehicle demand torque;

[0060] Step A2, performing torque analysis according to the vehicle demand torque, battery data, and vehicle speed, and calculating the torque request.

[0061] In this embodiment, the opening degree information of the throttle pedal and the transmission shaft speed information are obtained, and the vehicle demand torque is calculated based on the information. The hybrid control module performs torque analysis according to the battery SOC data, T capacity , vehicle speed, vehicle demand torque, etc., to obtain the torque request.

[0062] The torque request includes an engine torque request and a motor torque request, and the engine torque request and the motor torque request are sent to the engine and the motor respectively. The engine executes the engine torque request, and the motor executes the motor torque request, so as to realize the hybrid power work of the vehicle.

[0063] Step S20, determining whether the torque request meets the torque execution condition according to the torque determination value, and if so, responding to the torque request for the engine and the motor to execute the corresponding torque request.

[0064] In the embodiment, whether the engine torque request and the motor torque request meet the torque execution condition is determined according to the torque determination value, if yes, the engine and the motor are controlled to execute the engine torque request and the motor torque request respectively to achieve torque response, if not, the torque request needs to be modified, more torque is executed by the motor to make up for the insufficient torque of the engine to avoid the problem of insufficient power of the vehicle.

[0065] Further, the step of determining whether the torque request meets the torque execution condition according to the torque determination value, if yes, responding to the torque request for the engine and the motor to execute the corresponding torque request, comprises the following steps:

[0066] Step S21, comparing the engine torque request with the engine to-be-executed torque.

[0067] Step S22, if the engine torque request is less than or equal to the engine to-be-executed torque, it is determined that the engine torque request meets the execution condition, then the engine torque request is responded to, and the engine is controlled to execute the engine torque request.

[0068] In the embodiment, the torque request includes the engine torque request, and the execution condition met by the engine torque request is that the engine torque request is less than or equal to the engine to-be-executed torque at the current time, therefore, the engine to-be-executed torque at the current time, i.e., the maximum executable torque of the engine, is obtained, the engine torque request is compared with the engine to-be-executed torque, if the comparison relationship between the two meets the above execution condition, the engine torque request is responded to, and the engine is controlled to execute the engine torque request to provide power for the vehicle.

[0069] After the step of comparing the engine torque request with the engine to-be-executed torque, the following steps are included:

[0070] Step B1, if the engine torque request is greater than the engine to-be-executed torque, the engine torque correction amount is calculated according to the engine to-be-executed torque and the engine external characteristic torque.

[0071] Step B2, the engine torque request is modified according to the engine torque correction amount to obtain a new engine torque request, and the step of executing the step of receiving the torque request in the hybrid mode to obtain the torque determination value at the current time.

[0072] In the embodiment, if the engine torque request does not satisfy the execution condition, that is, the engine torque request is greater than the maximum executable torque of the engine at the current time, the torque request needs to be corrected to obtain a new engine torque request. In the correction process, the hybrid control module calculates the engine torque correction of the corrected torque request according to the engine to-be-executed torque, the engine external characteristic torque and the conventional torque correction calculation model, recalculates the new engine torque request through the engine torque correction, the battery SOC, the vehicle speed and the like, and then continues to determine whether the new engine torque request meets the torque execution condition until the new engine torque request meets the execution condition, and the engine is controlled to execute the engine torque request to provide power for the vehicle.

[0073] It should be noted that since the engine to-be-executed torque is dynamically updated, the new engine torque request after correction is compared with the engine to-be-executed torque at the current time, the execution condition is unchanged, and it is determined whether the new engine torque request meets the torque execution condition. For example, the engine intake amount at the first time is data N, the engine to-be-executed torque calculated through the data N is N1, and the update time of the engine to-be-executed torque is set to 100 ms. When the new engine torque request after correction is obtained, the engine to-be-executed torque N2 is calculated by reacquiring the intake amount at the current time (that is, 100 ms later) compared with the engine torque request before correction. The size of the new engine torque request and N2 is compared to determine whether the new engine torque request meets the torque execution condition.

[0074] Further, the step of determining whether the torque request meets the torque execution condition according to the torque determination value, and if yes, responding to the torque request to control the engine and the motor to execute the corresponding torque request comprises the following steps:

[0075] Step S23, comparing the motor torque request with the motor external characteristic torque.

[0076] Step S24, if the motor torque request is less than or equal to the motor external characteristic torque, it is determined that the motor torque request meets the execution condition, and the motor is controlled to execute the motor torque request in response to the motor torque request.

[0077] In the embodiment, the torque request also includes the motor torque request, and the execution condition met by the motor torque request is that the motor torque request is less than or equal to the motor external characteristic torque under the current SOC. Therefore, the current motor external characteristic torque is obtained, the motor torque request is compared with the motor external characteristic torque, and if the comparison relationship between the two meets the execution condition of the motor, the motor torque request is responded to, and the motor is controlled to execute the engine torque request to provide power for the vehicle.

[0078] The comparing the motor torque request and the motor external characteristic torque comprises the following steps:

[0079] Step C1, if the motor torque request is greater than the motor external characteristic torque, calculating a motor torque correction amount according to the motor battery state;

[0080] Step C2, correcting the motor torque request according to the motor torque correction amount to obtain a new motor torque request, and executing the step of obtaining the torque determination value at the current time when the torque request in the hybrid mode is received.

[0081] In the embodiment, if the motor torque request does not meet the execution condition, that is, the motor torque request is greater than the motor external characteristic torque at the current SOC, the motor torque request needs to be corrected to obtain a new motor torque request. Specifically, the motor torque request is corrected according to the engine torque request, so that the motor executes more torque to make up for the insufficient torque of the engine. It can be understood that the correction method of the motor torque correction can be new motor torque request = corrected engine torque request + corrected motor torque request - new engine torque request after correction, and the new motor torque request is continuously determined to determine whether the motor and the engine execute the engine torque request to provide power for the vehicle.

[0082] Further, since the lower the battery state of the motor is, the weaker the discharge capacity is, at this time the battery needs to be charged to avoid affecting the power supply of the motor, therefore, the correction of the motor torque request is affected by the battery state of the motor, and the motor torque request can be corrected according to the engine torque request and the battery state to calculate a new motor torque request.

[0083] It should be noted that the calculation of the above data is based on the conventional calculation model possessed in the hybrid control system.

[0084] In the embodiment, the steps include: when a torque request in a hybrid mode is received, a torque determination value at the current time is obtained, the torque determination value includes an engine to-be-executed torque and a motor external characteristic torque, the engine to-be-executed torque is determined by engine intake air volume; whether the torque request meets a torque execution condition is determined according to the torque determination value, if yes, the corresponding torque request is executed by the engine and the motor in response to the torque request; in the above manner, when the torque request is received, the torque determination value is obtained, the torque determination value includes the engine to-be-executed torque and the motor external characteristic torque, whether the torque request of the engine meets the demand is determined by the engine to-be-executed torque, and the torque request is responded to when the demand is met, since the engine to-be-executed torque is the real-time executable maximum torque determined by the intake air volume, the vehicle power demand is met, the hybrid torque control accuracy is improved, and the problem of insufficient vehicle power caused by the engine external characteristic torque being greater than the actual executed torque is solved.

[0085] Referring to Figure 3 , the first embodiment of the torque control method of the power system provides a torque control device of a power system, based on the above Figure 3 indicated embodiment, the torque control device of the power system comprises:

[0086] The acquisition module 10 is configured to, when a torque request in a hybrid mode is received, acquire a torque determination value at the current time, the torque determination value includes an engine to-be-executed torque and a motor external characteristic torque, the engine to-be-executed torque is determined by engine intake air volume;

[0087] The response module 20 is configured to determine whether the torque request meets a torque execution condition according to the torque determination value, if yes, the corresponding torque request is executed by the engine and the motor in response to the torque request.

[0088] Optionally, the response module 20 comprises:

[0089] The first comparison sub-module compares the engine torque request and the engine to-be-executed torque;

[0090] The first response sub-module determines that the engine torque request meets the execution condition if the engine torque request is less than or equal to the engine to-be-executed torque, and then responds to the engine torque request and controls the engine to execute the engine torque request.

[0091] Optionally, the response module 20 further comprises:

[0092] The first calculation sub-module calculates an engine torque correction amount according to the engine to-be-executed torque and the engine external characteristic torque if the engine torque request is greater than the engine to-be-executed torque;

[0093] The first correction sub-module corrects the engine torque request according to the engine torque correction amount, to obtain a new engine torque request, and executes the step of obtaining the torque determination value at the current time when receiving the torque request in the hybrid mode.

[0094] Optionally, the response module 20 further comprises:

[0095] The second comparison sub-module compares the motor torque request and the motor external characteristic torque.

[0096] The second response sub-module determines that the motor torque request meets the execution condition if the motor torque request is less than or equal to the motor external characteristic torque, and then responds to the motor torque request to control the motor to execute the motor torque request.

[0097] Optionally, the response module 20 further comprises:

[0098] The second calculation sub-module calculates the motor torque correction amount according to the motor battery state if the motor torque request is greater than the motor external characteristic torque.

[0099] The second correction sub-module corrects the motor torque request according to the motor torque correction amount, to obtain a new motor torque request, and executes the step of obtaining the torque determination value at the current time when receiving the torque request in the hybrid mode.

[0100] Optionally, the device further comprises:

[0101] The calculation module obtains the accelerator pedal information and the transmission shaft speed information, and calculates the vehicle demand torque.

[0102] The analysis module analyzes the torque according to the vehicle demand torque, the battery data, and the vehicle speed, and calculates the torque request.

[0103] The torque control device of the power system of the present application has the same basic implementation as the torque control method of the power system of the present application, and will not be described here.

[0104] In addition, the present application also provides a torque control device of a power system. As shown in Figure 4 , Figure 4 is a structural diagram of the hardware running environment of the torque control device of the power system according to the embodiment of the present application.

[0105] In one possible implementation, Figure 4 , that is, a structural diagram of the hardware running environment of the torque control device of the power system.

[0106] As Figure 4As shown, the torque control device of the power system can include a processor 701, a communication interface 702, a memory 703 and a communication bus 704, wherein the processor 701, the communication interface 702 and the memory 703 complete communication with each other through the communication bus 704, the memory 703 is used for storing a computer program; the processor 701 is used for executing the program stored on the memory 703 to realize the steps of the torque control method of the power system.

[0107] The communication bus 704 mentioned in the torque control device of the power system can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 704 can be divided into an address bus, a data bus and a control bus, etc. For the convenience of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0108] The communication interface 702 is used for communication between the torque control device of the power system and other devices.

[0109] The memory 703 can include a Random Access Memory (RMD), and can also include a Non-Volatile Memory (NM), for example, at least one disk memory. Optionally, the memory 703 can also be at least one storage device located away from the aforementioned processor 701.

[0110] The processor 701 mentioned above can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0111] The torque control device of the power system of the present application has basically the same embodiment as the torque control method of the power system, and will not be repeated here.

[0112] In addition, the embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a torque control program of a power system, and the torque control program of the power system is executed by a processor to realize the steps of the torque control method of the power system.

[0113] The computer readable storage medium embodiment of the present application is basically the same as the torque control method of the power system, and will not be described here.

[0114] It should be noted that in this paper, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or system. Without more limitations, the element defined by the sentence "includes a" does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0115] The above-mentioned embodiment number of the present application is only for description, not representing the pros and cons of the embodiment.

[0116] Through the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by software plus the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application or the part that contributes to the prior art can be embodied in the form of software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, including a plurality of instructions to make a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the method described in each embodiment of the present application.

[0117] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A torque control method of a power system, characterized by, The torque control method of the power system comprises the following steps: Upon receiving a torque request in the hybrid mode, a torque determination value at the current time is obtained, the torque determination value comprising an engine to-be-executed torque and an external characteristic torque of the motor, wherein the engine to-be-executed torque is a maximum executed torque corresponding to a real-time torque within a preset time, the maximum executed torque is dynamically updated based on a preset frequency, the to-be-executed torque is calculated by a preset calculation model based on a maximum intake amount of the engine, and the maximum intake amount is calculated by a preset intake amount calculation model based on parameter values of the engine; It is determined whether the torque request meets a torque execution condition according to the torque determination value, and if so, the torque request is responded to so as to execute a corresponding torque request by the engine and the motor.

2. The torque control method of a powertrain according to claim 1, characterized by, The torque request comprises an engine torque request, The step of determining whether the torque request meets a torque execution condition according to the torque determination value, and if so, responding to the torque request so as to execute a corresponding torque request by the engine and the motor, comprises: The engine torque request is compared with the engine to-be-executed torque; If the engine torque request is less than or equal to the engine to-be-executed torque, it is determined that the engine torque request meets an execution condition, and the engine torque request is responded to so as to control the engine to execute the engine torque request.

3. The torque control method of a powertrain according to claim 2, characterized by, After the step of comparing the engine torque request with the engine to-be-executed torque, the method comprises: If the engine torque request is greater than the engine to-be-executed torque, an engine torque correction amount is calculated according to the engine to-be-executed torque and the external characteristic torque of the engine; The engine torque request is corrected according to the engine torque correction amount to obtain a new engine torque request, and the step of obtaining the torque determination value at the current time upon receiving the torque request in the hybrid mode is executed.

4. The torque control method of a powertrain according to claim 2, characterized by, The torque request further comprises a motor torque request, The step of determining whether the torque request meets a torque execution condition according to the torque determination value, and if so, responding to the torque request so as to execute a corresponding torque request by the engine and the motor, comprises: The motor torque request is compared with the external characteristic torque of the motor; If the motor torque request is less than or equal to the external characteristic torque of the motor, it is determined that the motor torque request meets an execution condition, and the motor torque request is responded to so as to control the motor to execute the motor torque request.

5. The torque control method of a powertrain according to claim 4, characterized by, After the step of comparing the motor torque request with the external characteristic torque of the motor, the method comprises: If the motor torque request is greater than the external characteristic torque of the motor, a motor torque correction amount is calculated according to a motor battery state; The motor torque request is corrected according to the motor torque correction amount to obtain a new motor torque request, and the step of obtaining the torque determination value at the current time upon receiving the torque request in the hybrid mode is executed.

6. The torque control method of a powertrain according to claim 1, characterized by, Before the step of obtaining the torque determination value at the current time upon receiving the torque request in the hybrid mode, the method comprises: Obtain the accelerator pedal information, the gearbox shaft speed information, and calculate the vehicle demand torque; According to the vehicle demand torque, the battery data, and the vehicle speed, the torque request is calculated.

7. A torque control device for a powertrain system, characterized by, The device comprises: An acquisition module, configured to acquire a torque determination value at the current time when a torque request in the hybrid mode is received, the torque determination value comprising an engine to-be-executed torque and a motor external characteristic torque, wherein the engine to-be-executed torque is a maximum executed torque corresponding to a real-time torque within a preset time, the maximum executed torque is dynamically updated based on a preset frequency, the to-be-executed torque is calculated by a preset calculation model based on the maximum intake amount of the engine, and the maximum intake amount is calculated by a preset intake amount calculation model based on the parameter values of the engine; A response module, configured to determine whether the torque request meets a torque execution condition according to the torque determination value, and if yes, respond to the torque request so that the engine and the motor execute the corresponding torque request.

8. A torque control apparatus for a powertrain system, characterized by, The torque control device of the power system comprises a memory, a processor, and a torque control program of the power system stored on the memory and executable on the processor, and the torque control program of the power system implements the steps of the method according to any one of claims 1 to 6 when executed by the processor.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores the torque control program of the power system, and the torque control program of the power system implements the steps of the torque control method of the power system according to any one of claims 1 to 6 when executed by the processor.

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