Hybrid vehicle engine output torque control method, medium, device and vehicle

Abstract

The present disclosure relates to a hybrid vehicle engine output torque control method, medium, device and vehicle to solve the problem that the engine of the hybrid vehicle is easy to stall when the high-voltage battery is charged, including: in response to the instruction of charging the high-voltage battery of the hybrid vehicle, calculating the required charging torque that meets the high-voltage battery charging demand and the required power generation torque that meets the target load of the hybrid vehicle to obtain the whole vehicle power generation torque of the engine, the whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque; calculating the minimum required power generation torque that meets the first target load related to vehicle driving and safety in the target load; controlling the engine power output torque to increase to the whole vehicle power generation torque according to the required charging torque, the required power generation torque and the minimum required power generation torque. In this way, the risk of the engine being easy to stall when the vehicle starts to charge the high-voltage battery can be reduced on the basis of ensuring the vehicle power performance.

Description

Technical Field

[0001] The present disclosure relates to the technical field of new energy vehicle engineering, and in particular to a method, medium, device and vehicle for controlling engine output torque of a hybrid vehicle. Background Art

[0002] The output torque of the engine shaft end of a hybrid vehicle includes two parts: the driving torque for driving the whole vehicle and the whole vehicle power generation torque. Among them, the whole vehicle power generation torque includes the target charging torque for charging the high-voltage battery. When the high-voltage battery needs to be charged, the engine needs to increase the positive torque equal to the target charging torque to maintain the driving torque of the whole vehicle unchanged, thereby ensuring that the vehicle speed matches the speed corresponding to the opening and closing degree of the accelerator pedal.

[0003] In the related technology, when it is determined that the high-voltage battery needs to be charged, the vehicle controller VCU controls the increase of the engine's vehicle power generation torque according to the torque gradient table, and increases the target charging torque on the basis of the original vehicle power generation torque to maintain the vehicle's driving torque unchanged. Summary of the invention

[0004] The purpose of the present disclosure is to provide a hybrid vehicle engine output torque control method, medium, device and vehicle to solve the problem that the engine of the hybrid vehicle is prone to stalling when starting to charge the high-voltage battery.

[0005] In order to achieve the above-mentioned purpose, in a first aspect of an embodiment of the present disclosure, a method for controlling the output torque of a hybrid vehicle engine is provided, comprising:

[0006] In response to an instruction to charge a high-voltage battery of the hybrid vehicle, a required charging torque that satisfies a charging requirement of the high-voltage battery and a required power generation torque that satisfies a target load operation of the hybrid vehicle are calculated to obtain a whole vehicle power generation torque of the engine, wherein the whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque;

[0007] Calculate the minimum required power generation torque to meet the first target load related to vehicle driving and safety among the target loads;

[0008] The engine's power generation output torque is controlled to increase to the vehicle's power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque.

[0009] Optionally, controlling the output torque of the engine to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque comprises:

[0010] Calculating the minimum required power generation torque and the required charging torque and the torque, and shutting down a second target load in the target load that is not related to vehicle driving and safety;

[0011] Controlling the engine to increase the power generation output torque based on the demand and torque; and,

[0012] When the power generation output torque of the engine increases to the demand and torque, charging the high-voltage battery and starting the timing;

[0013] If the timing duration reaches the calibration duration, the engine is controlled to increase the power generation output torque with the whole vehicle power generation torque as the target;

[0014] When the power generation output torque of the engine increases to the whole vehicle power generation torque, the second target load is turned on.

[0015] Optionally, the calibration duration is obtained by looking up a table based on the current opening degree of the accelerator pedal of the hybrid vehicle, the current vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the running duration of the engine.

[0016] Optionally, before controlling the output torque of the engine to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque, the method further comprises:

[0017] It is determined that a difference between the vehicle power generation torque and the minimum required power generation torque is greater than a preset threshold.

[0018] Optionally, the method further comprises:

[0019] In response to an instruction to stop charging the high-voltage battery, the output torque of the engine is controlled to be reduced to a target output torque according to a torque gradient table, wherein the torque gradient table calibrates the target output torque corresponding to the opening and closing degree of the accelerator pedal of the hybrid vehicle, the vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the operating time of the engine.

[0020] According to a second aspect of the present disclosure, there is provided a hybrid vehicle engine output torque control device, comprising:

[0021] a first calculation module, for calculating, in response to an instruction to charge a high-voltage battery of the hybrid vehicle, a required charging torque to meet a charging requirement of the high-voltage battery and a required power generation torque to meet a target load operation of the hybrid vehicle, so as to obtain a whole vehicle power generation torque of the engine, wherein the whole vehicle power generation torque is a sum of the required charging torque and the required power generation torque;

[0022] A second calculation module is used to calculate the minimum required power generation torque to meet the first target load related to vehicle driving and safety among the target loads;

[0023] A control module is used to control the power generation output torque of the engine to increase to the whole vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque.

[0024] Optionally, the control module is specifically used to:

[0025] Calculating the minimum required power generation torque and the required charging torque and the torque, and shutting down a second target load in the target load that is not related to vehicle driving and safety;

[0026] Controlling the engine to increase the power generation output torque based on the demand and torque; and,

[0027] When the power generation output torque of the engine increases to the demand and torque, charging the high-voltage battery and starting the timing;

[0028] If the timing duration reaches the calibration duration, the engine is controlled to increase the power generation output torque with the whole vehicle power generation torque as the target;

[0029] When the power generation output torque of the engine increases to the whole vehicle power generation torque, the second target load is turned on.

[0030] Optionally, the calibration duration is obtained by looking up a table based on the current opening degree of the accelerator pedal of the hybrid vehicle, the current vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the running duration of the engine.

[0031] Optionally, the control module is also used to determine that the difference between the vehicle power generation torque and the minimum required power generation torque is greater than a preset threshold before controlling the output torque of the engine to increase to the vehicle power generation torque based on the required charging torque, the required power generation torque, and the minimum required power generation torque.

[0032] Optionally, the control module is also used to respond to an instruction to stop charging the high-voltage battery, and control the output torque of the engine to be reduced to a target output torque according to a torque gradient table, wherein the torque gradient table calibrates the target output torque corresponding to the opening degree of the accelerator pedal of the hybrid vehicle, the vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the operating time of the engine.

[0033] According to a third aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the hybrid vehicle engine output torque control method described in any one of the first aspects.

[0034] According to a fourth aspect of the present disclosure, an electronic device is provided, including:

[0035] a memory having a computer program stored thereon;

[0036] A processor is used to execute the program code in the memory to implement the steps of any one of the methods in the first aspect.

[0037] A fifth aspect of the embodiments of the present disclosure provides a vehicle controller, comprising: the electronic device described in the fourth aspect.

[0038] According to a sixth aspect of the present disclosure, a hybrid vehicle is provided, comprising:

[0039] The vehicle controller according to the fifth aspect;

[0040] An engine, a target load, and a high-voltage battery are communicatively coupled to the vehicle controller.

[0041] The above technical solution can at least achieve the following technical effects:

[0042] By responding to the instruction to charge the high-voltage battery of the hybrid vehicle, the required charging torque that meets the high-voltage battery charging requirements and the required power generation torque that meets the target load of the hybrid vehicle are calculated to obtain the whole vehicle power generation torque of the engine, and the whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque; the minimum required power generation torque that meets the first target load related to vehicle driving and safety in the target load is calculated; and the engine power output torque is controlled to increase to the whole vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque. In this way, in the process of controlling the increase of the engine power output torque, the engine power output torque is first controlled to increase to the whole vehicle power generation torque with the minimum required power generation torque, which can reduce the risk of the engine being easy to stall when the hybrid vehicle starts charging the high-voltage battery on the basis of ensuring the vehicle power performance.

[0043] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0045] Figure 1 The figure is a schematic diagram showing a torque change when charging of a high-voltage battery starts according to an exemplary embodiment.

[0046] Figure 2 The figure is a flow chart of a method for controlling engine output torque of a hybrid vehicle according to an exemplary embodiment.

[0047] Figure 3 An implementation according to an exemplary embodiment is shown Figure 1 Flowchart of step S13 in FIG.

[0048] Figure 4 The figure is a schematic diagram showing torque changes when a driving motor starts to drive a vehicle according to an exemplary embodiment.

[0049] Figure 5 The diagram is a schematic diagram showing a vehicle controller controlling vehicle power generation according to an exemplary embodiment.

[0050] Figure 6 The invention is a block diagram of a hybrid vehicle engine output torque control device according to an exemplary embodiment.

[0051] Figure 7 is a block diagram of an electronic device 700 according to an exemplary embodiment. DETAILED DESCRIPTION

[0052] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0053] It should be noted that, in the present disclosure, the terms "first", "second", etc. in the specification, claims and drawings are used to distinguish similar objects and are not necessarily understood as describing a specific order or sequence.

[0054] Since the response speed of the engine is slower than that of the motor, see Figure 1 As shown in the figure, when receiving the instruction to charge the high-voltage battery, the response time t1 of the motor to the charging instruction is shorter than the response time t2 of the engine to the charging instruction. During the engine response time t2, the engine speed continues to increase. During the increase of the engine speed, if the vehicle driving torque is guaranteed to remain unchanged, the torque allocated to the motor for power generation by the output torque of the engine is insufficient (the motor charging torque is insufficient), and the negative torque of the motor to the engine may cause the engine to abnormally stall.

[0055] In view of this, the present disclosure provides a hybrid vehicle engine output torque control method, medium, device and vehicle to solve the problems existing in the related art, so as to reduce the risk of the engine being easily stalled when the hybrid vehicle starts to charge the high-voltage battery, while improving the driving stability of the vehicle when the vehicle starts to charge the high-voltage battery.

[0056] Figure 2 1 is a flow chart of a hybrid vehicle engine output torque control method according to an exemplary embodiment. Here, the vehicle controller is used as an example to execute the steps of the hybrid vehicle engine output torque control method. Figure 2 As shown, the method includes the following steps.

[0057] In step S11, in response to an instruction to charge the high-voltage battery of the hybrid vehicle, the required charging torque to meet the charging requirements of the high-voltage battery and the required power generation torque to meet the target load operation of the hybrid vehicle are calculated to obtain the vehicle power generation torque of the engine.

[0058] The whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque.

[0059] In step S12, the minimum required power generation torque for satisfying the first target load related to vehicle driving and safety among the target loads is calculated.

[0060] In step S13, the power generation output torque of the engine is controlled to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque.

[0061] In specific implementation, the vehicle controller can directly obtain the charge state of the high-voltage battery, or obtain the charge state of the high-voltage battery through a battery management system, etc., and then determine whether the high-voltage battery needs to be charged according to the charge state of the high-voltage battery. For example, when the charge state of the high-voltage battery is lower than a preset charge state threshold, an instruction to charge the high-voltage battery of the hybrid vehicle is generated. And when charging the high-voltage battery, the engine correspondingly determines the required charging torque to meet the charging requirements of the high-voltage battery according to the charge state of the high-voltage battery.

[0062] It can be explained that the required charging torque provided by the engine to the generator to meet the charging demand of the high-voltage battery is related to the universal characteristic curve of the engine and the motor conversion efficiency. In order to provide the required charging torque, the engine needs to increase the speed.

[0063] It can be understood that the target load refers to the load that is currently in the on state, and the target load may include the vehicle high-voltage accessories and the vehicle low-voltage load. The number of target loads can be multiple, and the total rated power of each target load is calculated by the rated power of each target load, and then the low-voltage required power generation torque is determined according to the total rated power of the vehicle low-voltage load, and the high-voltage required power generation torque is determined according to the total rated power of the vehicle high-voltage accessories and the conversion efficiency of the DC converter, and the low-voltage required power generation torque and the high-voltage required power generation torque are calculated to obtain the required power generation torque.

[0064] Furthermore, the vehicle high-voltage accessories in the first target load may include a high-voltage battery cooling system, a high-voltage battery preheating system, a drive motor cooling system, etc., and the vehicle low-voltage load in the first target load may include a combination instrument, an anti-lock braking system, etc. The total rated power of each first target load is calculated by the rated power of each first target load, and then the minimum required power generation torque is determined according to the total rated power of the first target load.

[0065] In one possible implementation, the calculation of the vehicle power generation torque includes the power loss of the wiring harness during the operation of the target load, that is, the vehicle power generation torque = (wiring harness power loss + rated power of each target load) / vehicle conversion efficiency / (engine speed * unit conversion factor).

[0066] By responding to the instruction to charge the high-voltage battery of the hybrid vehicle, the required charging torque that meets the high-voltage battery charging requirements and the required power generation torque that meets the target load of the hybrid vehicle are calculated to obtain the whole vehicle power generation torque of the engine, and the whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque; the minimum required power generation torque that meets the first target load related to vehicle driving and safety in the target load is calculated; and the power generation output torque of the engine is controlled to increase to the whole vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque. In this way, in the process of controlling the increase of the power generation output torque of the engine, the power generation output torque of the engine is first controlled to increase to the whole vehicle power generation torque with the minimum required power generation torque, which can reduce the risk of the engine being easy to stall when the hybrid vehicle starts to charge the high-voltage battery on the basis of ensuring the vehicle's power performance, and improve the stability of the vehicle when the vehicle starts to charge the high-voltage battery.

[0067] Optionally, refer to Figure 3 One implementation shown Figure 1 The flowchart of step S13, which controls the output torque of the engine to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque, includes the following steps.

[0068] In step S131 , the minimum required power generation torque and the required charging torque are calculated, and the second target load that is not related to vehicle driving and safety among the target loads is turned off.

[0069] In step S132, the engine is controlled to increase the power generation output torque based on the demand and torque.

[0070] In step S133, when the power generation output torque of the engine increases to the required torque, the high-voltage battery is charged and the timer is started.

[0071] In step S134, if the timing duration reaches the calibration duration, the engine is controlled to increase the power generation output torque with the whole vehicle power generation torque as the target.

[0072] In step S135, when the power generation output torque of the engine increases to the power generation torque of the entire vehicle, the second target load is turned on.

[0073] Optionally, the second target load may include a seat heating device, an air conditioning heating device PTC, an air conditioning cooling EAC, a multimedia music device, and a steering wheel heating device. Optionally, the actual engine response time to the charging instruction is between a few seconds. Within the engine response time, some loads related to driving and safety are turned off without affecting the driving and safety of the vehicle. This part of the load can be calibrated as belonging to the second target load. For example, the rearview mirror heating is turned off within the engine response time, which does not affect the driving and safety of the vehicle. The rearview mirror heating device can be calibrated as belonging to the second target load.

[0074] Specifically, the second target load is turned off, and the load that is not turned off in the target load is the first target load, and the power consumed by the first target load when working is the power corresponding to the minimum required power generation torque. Then the vehicle controller increases the engine speed based on the demand and torque, and ensures that the driving torque of the engine used to drive the vehicle remains unchanged, and controls the engine to increase the power generation output torque.

[0075] Furthermore, the vehicle controller determines that the engine speed corresponds to the vehicle power generation torque provided to meet the demand and torque while ensuring that the driving torque remains unchanged, charges the high-voltage battery, and controls the timer in the vehicle controller to start timing.

[0076] Furthermore, if the timing reaches the calibration time, the timing is stopped, and the engine is controlled to increase the power generation output torque with the vehicle power generation torque as the target, thereby increasing the engine power generation output torque (vehicle power generation torque) based on the minimum required power generation torque gradient.

[0077] By adopting the above technical solution, in the process of controlling the increase of the engine's power output torque, the second target load is turned off to reduce the increase of the engine's power output torque. The engine's power output torque is first increased with the minimum required power output torque and the required charging torque, and then the engine's power output torque is increased with the difference between the vehicle's power output torque and the required torque. In this way, the engine's power output torque is increased in a gradient manner, and the high-voltage battery can be charged while ensuring that the vehicle's driving torque remains unchanged, avoiding abnormal engine shutdown due to insufficient output torque when the high-voltage battery starts to be charged.

[0078] Optionally, the calibration duration is obtained by looking up a table based on the current opening degree of the accelerator pedal of the hybrid vehicle, the current vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the running duration of the engine.

[0079] It can be explained that the calibration duration is to make the engine speed relatively stable, that is, the engine's power output torque is relatively stable, but the engine speed changes dynamically in real time, and it is impossible to determine that the engine's power output torque reaches a balance and then start to control the engine to increase the power output torque with the whole vehicle power torque as the target. Therefore, the engine's power output torque is controlled to increase gradually through the calibration duration.

[0080] Optionally, before controlling the output torque of the engine to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque, the method further comprises:

[0081] It is determined that a difference between the vehicle power generation torque and the minimum required power generation torque is greater than a preset threshold.

[0082] It can be explained that if the difference between the whole vehicle power generation torque and the minimum required power generation torque is less than or equal to the preset threshold, it means that the increase in the engine power generation output torque is small. In this case, the possibility of the engine being abnormally flameout due to the negative torque of the generator is small, and the engine power generation output torque can be directly increased to the whole vehicle power generation torque. Therefore, when the difference between the whole vehicle power generation torque and the minimum required power generation torque is greater than the preset threshold, executing step S13 can effectively reduce the risk of abnormal engine flameout due to insufficient output torque when the high-voltage battery starts to be charged, and improve the rationality of the engine power generation output torque.

[0083] Optionally, the method further comprises:

[0084] In response to an instruction to stop charging the high-voltage battery, the output torque of the engine is controlled to be reduced to a target output torque according to a torque gradient table, wherein the torque gradient table calibrates the target output torque corresponding to the opening and closing degree of the accelerator pedal of the hybrid vehicle, the vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the operating time of the engine.

[0085] Specifically, when the high-voltage battery is stopped from charging, the engine's response speed is slower than the motor's response speed. When the high-voltage battery is charged, the motor's response time t3 to the instruction to stop charging is shorter than the engine's response time t4 to the instruction to stop charging. During the engine's response time t4, the engine's speed continues to decrease. During the engine's speed reduction process, the engine outputs excess torque to the motor for power generation, which poses a risk of damaging the motor.

[0086] Therefore, the vehicle controller determines the target output torque of the engine for power generation based on the current opening and closing degree of the accelerator pedal, the current vehicle speed, the current engine coolant temperature, the current charge state of the high-voltage battery and the current engine running time through the torque gradient table, and then determines the engine speed reduction speed. This can effectively reduce the torque output by the engine to the motor for power generation during the engine speed reduction process, thereby reducing the risk of motor damage.

[0087] In one embodiment, reference Figure 4 As shown, when the drive motor starts to drive the vehicle based on the power provided by the high-voltage battery, the sum of the drive torque provided by the drive motor and the drive torque provided by the engine is used for driving. The response time t5 of the drive motor in response to the drive command is shorter than the response time t6 of the engine in response to the drive command. During the response time t6 of the engine, the engine speed continues to decrease. During the process of engine speed reduction, the engine outputs excess drive torque for driving the vehicle, which poses a risk of sudden acceleration of the vehicle.

[0088] In one implementation, the risk of sudden acceleration of the vehicle can be effectively reduced by turning on the consumption load and distributing the engine's driving torque to the power generation output torque, thereby reducing the driving torque.

[0089] The following describes the hybrid vehicle engine output torque control method using the control logic diagram of the vehicle controller in the embodiment. Figure 5 As shown, including:

[0090] The vehicle controller calculates the wiring harness loss power under the first target load working state, and calculates the sum of the DC converter power and the wiring harness loss power, and then determines the minimum required power generation torque according to the vehicle conversion efficiency and the engine speed.

[0091] Furthermore, the required power generation torque is obtained by calculating the rated power of the target load in the on state, the difference between the required power generation torque and the minimum required power generation torque is calculated, and the difference is the required power generation torque corresponding to the power consumed by the second target load when working, and the required charging torque corresponding to the charge state of the high-voltage battery is calculated, and the demand and torque are calculated based on the minimum required power generation torque and the required charging torque.

[0092] Furthermore, the vehicle controller calculates the vehicle power generation torque based on the required charging torque and the required power generation torque. It can be understood that the power provided by the motor passes through the filter to obtain the actual power.

[0093] When the vehicle controller determines that the power generation output torque increases to the required torque, it obtains the charge state of the high-voltage battery and the engine coolant temperature to determine the calibration duration by looking up the table, charges the high-voltage battery, starts the timing, and then calculates the difference between the vehicle's power generation torque and the minimum required power generation torque. When the timing reaches the calibration duration, the difference is used as the target to control the engine to increase the power generation output torque or control the engine to increase the output torque, thereby realizing vehicle power generation control.

[0094] Based on the same inventive concept, the present disclosure also provides a hybrid vehicle engine output torque control device 500, which is used to execute the steps of the hybrid vehicle engine output torque control method provided in the above method embodiment. The device 500 can implement the hybrid vehicle engine output torque control method in the form of software, hardware or a combination of both. Figure 6 is a block diagram of a hybrid vehicle engine output torque control device 500 according to an exemplary embodiment. Figure 6 As shown, the device 500 includes: a first calculation module 510, a second calculation module 520 and a control module 530.

[0095] The first calculation module 510 is used to calculate the required charging torque that meets the charging demand of the high-voltage battery and the required power generation torque that meets the target load operation of the hybrid vehicle in response to the instruction to charge the high-voltage battery of the hybrid vehicle, so as to obtain the whole vehicle power generation torque of the engine, and the whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque;

[0096] A second calculation module 520 is used to calculate the minimum required power generation torque to meet the first target load related to vehicle driving and safety among the target loads;

[0097] The control module 530 is used to control the power generation output torque of the engine to increase to the whole vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque.

[0098] When controlling the increase of the engine's power output torque, the above-mentioned device first controls the engine's power output torque to increase to the vehicle's power torque with the minimum required power output torque. This can reduce the risk of the engine stalling when the hybrid vehicle starts charging the high-voltage battery while ensuring the vehicle's power performance, and improve the vehicle's driving stability when the vehicle starts charging the high-voltage battery.

[0099] Optionally, the control module 530 is specifically configured to:

[0100] Calculating the minimum required power generation torque and the required charging torque and the torque, and shutting down a second target load in the target load that is not related to vehicle driving and safety;

[0101] Controlling the engine to increase the power generation output torque based on the demand and torque; and,

[0102] When the power generation output torque of the engine increases to the demand and torque, charging the high-voltage battery and starting the timing;

[0103] If the timing duration reaches the calibration duration, the engine is controlled to increase the power generation output torque with the whole vehicle power generation torque as the target;

[0104] When the power generation output torque of the engine increases to the whole vehicle power generation torque, the second target load is turned on.

[0105] Optionally, the calibration duration is obtained by looking up a table based on the current opening degree of the accelerator pedal of the hybrid vehicle, the current vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the running duration of the engine.

[0106] Optionally, the control module 530 is also used to determine that the difference between the vehicle power generation torque and the minimum required power generation torque is greater than a preset threshold before controlling the output torque of the engine to increase to the vehicle power generation torque based on the required charging torque, the required power generation torque, and the minimum required power generation torque.

[0107] Optionally, the control module 530 is also used to respond to an instruction to stop charging the high-voltage battery, and control the output torque of the engine to be reduced to a target output torque according to a torque gradient table, wherein the torque gradient table calibrates the target output torque corresponding to the opening and closing degree of the accelerator pedal of the hybrid vehicle, the vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the operating time of the engine.

[0108] The embodiment of the present disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the hybrid vehicle engine output torque control methods.

[0109] The present disclosure also provides an electronic device, including:

[0110] a memory having a computer program stored thereon;

[0111] A processor is used to execute the program code in the memory to implement the steps of any one of the methods.

[0112] Figure 7 is a block diagram of an electronic device 700 according to an exemplary embodiment. The electronic device 700 can be configured as a vehicle controller, such as Figure 7 As shown, the electronic device 700 may include: a processor 701 and a memory 702. The electronic device 700 may also include one or more of a multimedia component 703, an input / output (I / O) interface 704, and a communication component 705.

[0113] The processor 701 is used to control the overall operation of the electronic device 700 to complete all or part of the steps in the hybrid vehicle engine output torque control method described above. The memory 702 is used to store various types of data to support the operation of the electronic device 700, and these data may include, for example, instructions for any application or method operated on the electronic device 700, and data related to the application. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 705 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0114] In an exemplary embodiment, the electronic device 700 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned hybrid vehicle engine output torque control method.

[0115] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the hybrid vehicle engine output torque control method described above are implemented. For example, the computer-readable storage medium may be the memory 702 including the program instructions, and the program instructions may be executed by the processor 701 of the electronic device 700 to complete the hybrid vehicle engine output torque control method described above.

[0116] The embodiment of the present disclosure also provides a vehicle controller, including: the electronic device described above.

[0117] The present disclosure also provides a hybrid vehicle, comprising:

[0118] The vehicle controller;

[0119] An engine, a target load, and a high-voltage battery are communicatively coupled to the vehicle controller.

[0120] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0121] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0122] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for controlling the output torque of a hybrid vehicle engine, characterized in that: include: In response to an instruction to charge a high-voltage battery of the hybrid vehicle, a required charging torque that satisfies a charging requirement of the high-voltage battery and a required power generation torque that satisfies a target load operation of the hybrid vehicle are calculated to obtain a whole vehicle power generation torque of the engine, wherein the whole vehicle power generation torque is the sum of the required charging torque and the required power generation torque; Calculate the minimum required power generation torque to meet the first target load related to vehicle driving and safety among the target loads; Controlling the engine's power generation output torque to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque; Wherein, controlling the output torque of the engine to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque includes: Calculating the minimum required power generation torque and the required charging torque and the torque, and shutting down a second target load in the target load that is not related to vehicle driving and safety; Controlling the engine to increase the power generation output torque based on the demand and torque; and, When the power generation output torque of the engine increases to the demand and torque, charging the high-voltage battery and starting the timing; If the timing duration reaches the calibration duration, the engine is controlled to increase the power generation output torque with the whole vehicle power generation torque as the target; When the power generation output torque of the engine increases to the whole vehicle power generation torque, the second target load is turned on.

2. The method according to claim 1, characterized in that The calibration duration is obtained by looking up a table based on the current opening degree of the accelerator pedal of the hybrid vehicle, the current vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the running duration of the engine.

3. The method according to claim 1, characterized in that Before controlling the output torque of the engine to increase to the vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque, the method includes: It is determined that a difference between the vehicle power generation torque and the minimum required power generation torque is greater than a preset threshold.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: In response to an instruction to stop charging the high-voltage battery, the output torque of the engine is controlled to be reduced to a target output torque according to a torque gradient table, wherein the torque gradient table calibrates the target output torque corresponding to the opening and closing degree of the accelerator pedal of the hybrid vehicle, the vehicle speed, the coolant temperature of the engine, the charge state of the high-voltage battery, and the operating time of the engine.

5. A hybrid vehicle engine output torque control device, characterized in that: include: a first calculation module, for calculating, in response to an instruction to charge a high-voltage battery of the hybrid vehicle, a required charging torque to meet a charging requirement of the high-voltage battery and a required power generation torque to meet a target load operation of the hybrid vehicle, so as to obtain a whole vehicle power generation torque of the engine, wherein the whole vehicle power generation torque is a sum of the required charging torque and the required power generation torque; A second calculation module is used to calculate the minimum required power generation torque to meet the first target load related to vehicle driving and safety among the target loads; A control module, configured to control the power generation output torque of the engine to increase to the whole vehicle power generation torque according to the required charging torque, the required power generation torque, and the minimum required power generation torque; Wherein, the control module is specifically used for: Calculating the minimum required power generation torque and the required charging torque and the torque, and shutting down a second target load in the target load that is not related to vehicle driving and safety; Controlling the engine to increase the power generation output torque based on the demand and torque; and, When the power generation output torque of the engine increases to the demand and torque, charging the high-voltage battery and starting the timing; If the timing duration reaches the calibration duration, the engine is controlled to increase the power generation output torque with the whole vehicle power generation torque as the target; When the power generation output torque of the engine increases to the whole vehicle power generation torque, the second target load is turned on.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the hybrid vehicle engine output torque control method described in any one of claims 1-4 are implemented.

7. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the program code in the memory to implement the steps of the method according to any one of claims 1 to 4.

8. A vehicle controller, characterized in that: include: The electronic device according to claim 7.

9. A hybrid vehicle, characterized in that: include: The vehicle controller as claimed in claim 8; An engine, a target load, and a high-voltage battery are communicatively coupled to the vehicle controller.

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