A control method, apparatus, device, and storage medium for vehicle regeneration.

Abstract

The present invention discloses a control method, device, equipment and storage medium for driving regeneration. The control method includes: obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter; in the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, obtaining the temperature rise rate and the temperature rise duration; when the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque and the remaining power is greater than the preset power, outputting a torque reduction signal to the generator to control the generator to reduce the generator torque; when the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exiting the driving regeneration stage. The technical solution of the present invention prevents the overheating of the engine aftertreatment system from affecting the normal operation of the system, improves the reliability of the vehicle during operation, and ensures the normal operation of the vehicle system.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a control method, device, equipment and storage medium for driving regeneration. Background Art

[0002] Compared with the traditional engine powertrain system, the extended-range hybrid power system has added power batteries, generator systems, and drive motor systems. These key components all require heat dissipation. In order to prevent the high exhaust temperature of the engine after-treatment system from affecting the heat dissipation of these components, after the engine is matched to the whole vehicle, the protection of the engine after-treatment system is made more closed than that of the traditional engine, which is not conducive to the cooling of the engine after-treatment system and can easily cause the surface temperature of the engine after-treatment system wiring harness to overheat, especially during the driving regeneration stage. Summary of the invention

[0003] The present invention provides a control method, device, equipment and storage medium for driving regeneration to solve the risk of overheating of the engine aftertreatment system during the driving regeneration stage in the extended-range hybrid power system in the prior art.

[0004] According to a first aspect of the present invention, there is provided a method for controlling vehicle regeneration, comprising:

[0005] Obtain the real-time temperature of the particulate filter, carbon load, remaining power of the power battery and generator torque;

[0006] In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained;

[0007] When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque;

[0008] When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, the driving regeneration phase is exited.

[0009] Optionally, when the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, after exiting the driving regeneration phase, the method further includes:

[0010] Continue to obtain real-time temperature and carbon loading;

[0011] When the carbon load is greater than or equal to the second preset carbon load and the temperature drop time is greater than the preset drop time, the driving regeneration phase is entered; wherein the temperature drop time is the duration when the real-time temperature is less than the second preset temperature.

[0012] Optionally, when the carbon load is greater than or equal to a second preset carbon load and the temperature drop time is greater than a preset drop time, after entering the driving regeneration phase, the method further includes:

[0013] When the carbon load is less than the first preset carbon load, the driving regeneration phase is exited.

[0014] Optionally, when the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, after exiting the driving regeneration phase, the method further includes:

[0015] Continue to obtain carbon load;

[0016] When the carbon load is less than the second preset carbon load, the driving regeneration phase is not entered; wherein the second preset carbon load is greater than the first preset carbon load.

[0017] Optionally, in the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained, including:

[0018] In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise duration is obtained;

[0019] The temperature rise rate is determined based on the temperature rise duration and the real-time temperature.

[0020] Optionally, in the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained, including:

[0021] When the carbon load is greater than the third preset carbon load, the driving regeneration phase is entered; wherein the third preset carbon load is greater than the first preset carbon load;

[0022] When the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained.

[0023] Optionally, the control method further includes:

[0024] Get the ambient temperature;

[0025] The first preset carbon loading is determined according to the ambient temperature and a preset ambient temperature-carbon loading correspondence relationship.

[0026] According to a second aspect of the present invention, a control device for driving regeneration is provided, which is used to execute any one of the control methods for driving regeneration, and the control device comprises:

[0027] A parameter acquisition module is used to obtain the real-time temperature of the particulate filter, carbon load, remaining power of the power battery and generator torque;

[0028] A judgment module, used for obtaining a temperature rise rate and a temperature rise duration when the real-time temperature is greater than a first preset temperature during a driving regeneration stage;

[0029] The torque control module is used to output a torque reduction signal to the generator to control the generator to reduce the generator torque when the temperature rise rate is greater than a preset temperature rate, the generator torque is greater than a preset torque, and the remaining power is greater than a preset power;

[0030] The mode exit module is used to exit the driving regeneration phase when the temperature rise duration is greater than a preset rise time or the carbon load is less than a first preset carbon load.

[0031] According to a third aspect of the present invention, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a vehicle regeneration control method when executing the program.

[0032] According to a fourth aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, which implements a control method for vehicle regeneration when executed by a processor.

[0033] The technical solution of the embodiment of the present invention obtains the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter to monitor in real time whether there is an over-temperature risk during the driving regeneration stage. When there is an over-temperature risk and the generator torque reduction condition is met, the generator torque is appropriately reduced to reduce the over-temperature risk and the duration of temperature rise. If there is still an over-temperature risk after reducing the generator torque, the driving regeneration stage is exited in advance to prevent the over-temperature of the engine after-treatment system from affecting the normal operation of the system, thereby improving the reliability of the vehicle during operation and ensuring the normal operation of the vehicle system.

[0034] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a flow chart of a first driving regeneration control method provided according to an embodiment of the present invention;

[0037] Figure 2is a structural connection diagram of a range-extended hybrid power system provided according to an embodiment of the present invention;

[0038] Figure 3 is a flow chart of a second driving regeneration control method provided according to an embodiment of the present invention;

[0039] Figure 4 is a flow chart of a third driving regeneration control method provided according to an embodiment of the present invention;

[0040] Figure 5 is a flow chart of a fourth driving regeneration control method provided according to an embodiment of the present invention;

[0041] Figure 6 is a flow chart of a fifth driving regeneration control method provided according to an embodiment of the present invention;

[0042] Figure 7 is a flow chart of a sixth driving regeneration control method provided according to an embodiment of the present invention;

[0043] Figure 8 is a flow chart of a seventh driving regeneration control method provided according to an embodiment of the present invention;

[0044] Fig. 9 is a connection diagram of a driving regeneration control device provided according to an embodiment of the present invention;

[0045] Fig.10 The figure is a schematic diagram of the structure of an electronic device applied to a control method for vehicle regeneration according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] The particulate filter can be a filter installed in the engine after-treatment system, which filters harmful substances before they are discharged into the atmosphere, thereby reducing air pollution. Driving regeneration refers to the process of the vehicle driving, when the particulate filter reaches certain conditions, starting the driving regeneration mode, treating harmful substances by combustion to ensure normal operation. In the extended-range hybrid system, in order to ensure the heat dissipation of the power battery, generator system and drive motor system, the engine after-treatment system is more closed than the traditional engine. When burning during the driving regeneration process, the engine after-treatment system will cause the temperature to rise faster, and there is a risk of overheating of the wiring harness surface. Therefore, an embodiment of the present invention provides a control method for driving regeneration. Figure 1 is a flow chart of a first driving regeneration control method provided according to an embodiment of the present invention. Figure 1 As shown, the control method includes:

[0049] S10, obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter.

[0050] Among them, the vehicle control unit can communicate with the particulate filter, power battery, and generator, and can obtain the real-time temperature of the particulate filter, carbon load, remaining power of the power battery, and generator torque in real time.

[0051] Among them, the real-time temperature of the particulate filter can characterize the temperature of the engine after-treatment system to a certain extent, and then it can be judged whether there is an over-temperature risk in the current engine after-treatment system based on the real-time temperature.

[0052] Among them, the carbon load can be the accumulated amount of carbon particles inside the particulate filter. When the carbon load is too high, it may cause the particulate filter to be blocked, affecting the emission performance of the vehicle. Therefore, when the carbon load is too high, driving regeneration treatment is required.

[0053] Among them, the power battery is connected to the generator, and the generator can be used to supply power to the power battery, so the remaining power of the power battery is related to the torque of the generator.

[0054] S11. In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained.

[0055] Among them, during the driving regeneration stage, since the particulate filter starts to start burning harmful substances, the temperature of the engine after-treatment system will increase at this time. At this time, it is judged whether the real-time temperature is greater than the first preset temperature. When the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained, and then it can be judged whether the real-time temperature will continue to rise rapidly and the duration of the rise, and then it can be determined whether there is a risk of over-temperature.

[0056] S12. When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0057] The preset temperature rate may be a critical temperature rise rate at which there is a risk of over-temperature. When the temperature rise rate is greater than the preset temperature rate, it indicates that there is a risk of over-temperature in the engine after-treatment system.

[0058] Among them, in the extended-range hybrid system, part of the electricity generated by the generator when it is working can be used to charge the drive motor and the remaining part can be used to charge the power battery. The preset torque can be the minimum generator torque for the generator to power the drive motor and the power battery. When it is judged that the generator torque is greater than the preset torque and the remaining power is greater than the preset power, it means that the normal operation of the vehicle can be guaranteed without charging the power battery, so the generator is controlled to reduce the generator torque at this time. Since the generator is connected to the engine through a coupling, reducing the engine torque can reduce the generator torque, thereby reducing the temperature rise rate and temperature rise duration of the engine aftertreatment system, thereby reducing the risk of overheating.

[0059] S13: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0060] The preset rise time is the critical temperature rise time for overheating of the engine aftertreatment system. After reducing the generator torque, the temperature rise duration is continued to be obtained. When the temperature rise duration is greater than the preset rise time, it means that there is still an overheating risk. At this time, the driving regeneration stage is exited, so that the real-time temperature does not rise any more, avoiding overheating affecting the normal operation of the engine aftertreatment system.

[0061] The first preset carbon load may be the lower limit of the carbon load at the end of the driving regeneration phase. When the carbon load is less than the first preset carbon load, the particulate trap has reduced the carbon-containing harmful substances to less than the first preset carbon load, and the risk of particulate trap blockage is eliminated, so the driving regeneration phase is exited to complete the harmful substances treatment work.

[0062] Specifically, the engine after-treatment system can be set in a range-extended hybrid system. Figure 2 is a structural connection diagram of a range-extended hybrid power system provided according to an embodiment of the present invention, such as Figure 2 As shown, the extended-range hybrid system includes an engine 1, a coupling 2, a generator 3, a generator controller 4, a power battery 5, a drive motor 6, a drive motor controller 7 and a vehicle controller 8. The vehicle controller 8 is respectively connected to the engine 1, the generator 3, the generator controller 4, the power battery 5, the drive motor 6 and the drive motor controller 7 for communication. The engine 1 and the generator 3 are connected via the coupling 2. The generator controller 4 is respectively connected to the generator 3, the power battery 5 and the drive motor controller 7. The drive battery controller is also electrically connected to the drive motor 6. The particulate collector is arranged in the after-treatment system of the engine 1, Figure 2 Not shown in the figure. The vehicle controller 8 obtains the real-time temperature, carbon load, remaining power of the power battery 5 and generator torque of the particulate filter in real time. When the extended-range hybrid system enters the driving regeneration stage, it is determined whether the real-time temperature is greater than the first preset temperature. When the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are continuously obtained. After obtaining the temperature rise rate and the temperature rise duration in real time, it is continuously determined whether the temperature rise rate is greater than the preset temperature rate, whether the generator torque is greater than the preset torque, and whether the remaining power of the power battery 5 is greater than the preset power. When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator 3 to control the generator 3 to reduce the generator torque. After controlling the generator torque to be reduced, it is continuously determined whether the temperature rise duration is greater than the preset rise time. When the temperature rise duration is greater than the preset rise time, in order to avoid the risk of overheating, the driving regeneration stage is exited; when the carbon load is less than the first preset carbon load, the harmful substances are processed and the driving regeneration stage is exited.

[0063] The technical solution of the embodiment of the present invention obtains the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter to monitor in real time whether there is an over-temperature risk during the driving regeneration stage. When there is an over-temperature risk and the generator torque reduction condition is met, the generator torque is appropriately reduced to reduce the over-temperature risk and the duration of temperature rise. If there is still an over-temperature risk after reducing the generator torque, the driving regeneration stage is exited in advance to prevent the over-temperature of the engine after-treatment system from affecting the normal operation of the system, thereby improving the reliability of the vehicle during operation and ensuring the normal operation of the vehicle system.

[0064] Based on the above embodiments, Figure 3 is a flow chart of a second driving regeneration control method provided according to an embodiment of the present invention. Figure 3 As shown, the control method includes:

[0065] S20, obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter.

[0066] S21. In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained.

[0067] S22. When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0068] S23: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0069] S24. Continue to obtain real-time temperature and carbon loading.

[0070] Among them, after exiting the driving regeneration stage, the real-time temperature and carbon load continue to be obtained to continue to monitor whether it is necessary to enter the driving regeneration stage again.

[0071] S25: When the carbon load is greater than or equal to the second preset carbon load and the temperature drop time is greater than the preset drop time, the vehicle enters the driving regeneration phase, wherein the temperature drop time is the duration when the real-time temperature is less than the second preset temperature.

[0072] The second preset carbon load may be the lower limit of the carbon load for entering the driving regeneration stage, and the first preset carbon load is slightly greater than the second preset carbon load. When the carbon load is greater than or equal to the second preset carbon load, it means that the carbon load has reached the level for starting the driving regeneration stage and meets the starting conditions for the driving regeneration stage.

[0073] Among them, the real-time temperature starts to drop after exiting the driving stage, and the temperature drop time is the duration of the second preset temperature drop. The second preset temperature may be the temperature when exiting the driving regeneration stage. The second preset drop time may be the critical temperature drop time without over-temperature risk. When the temperature drop time is greater than the preset drop time, it means that there is no over-temperature risk in the engine after-treatment system at this time.

[0074] Specifically, when the carbon load is greater than or equal to the second preset carbon load and the temperature drop time is greater than the preset drop time, it means that there is no over-temperature risk in the engine after-treatment system at this time, but the carbon load is still too high, and it is necessary to enter the driving regeneration stage again to eliminate harmful substances, so the driving regeneration stage is entered again.

[0075] It can be understood that, since the conditions for exiting the driving regeneration stage in step S23 are that the carbon load is less than the first preset carbon load and the harmful substances are eliminated to a certain extent; and that the temperature rise duration is greater than the preset rise time, there is an over-temperature risk, so after exiting the driving regeneration stage, the real-time temperature and carbon load are continuously obtained. The purpose of this step is to monitor whether it is necessary to enter the driving regeneration stage again to eliminate harmful substances. When the temperature drop time is greater than the preset drop time, it means that there is no over-temperature risk at this time, and the carbon load at this time is still too high, greater than the second preset carbon load, so the driving regeneration stage is entered again to eliminate harmful substances.

[0076] The control method of driving regeneration of the technical solution of the embodiment of the present invention changes the entry and exit mechanism of the driving regeneration stage, and preferentially exits the driving regeneration stage when there is an over-temperature risk, and continues to enter the driving regeneration to eliminate harmful substances after the over-temperature risk is eliminated. The driving regeneration is carried out in stages, which ensures that the driving regeneration stage is carried out while avoiding the over-temperature risk and improving the reliability of the vehicle system.

[0077] Based on the above embodiments, Figure 4 is a flow chart of a third driving regeneration control method provided according to an embodiment of the present invention. Figure 4 As shown, the control method includes:

[0078] S30, obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter.

[0079] S31. In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained.

[0080] S32. When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0081] S33: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0082] S34. Continue to obtain real-time temperature and carbon loading.

[0083] S35: When the carbon load is greater than or equal to the second preset carbon load and the temperature drop time is greater than the preset drop time, the vehicle enters the driving regeneration phase, wherein the temperature drop time is the duration when the real-time temperature is less than the second preset temperature.

[0084] S36: When the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0085] Among them, after entering the driving phase again, when the particulate filter processes the carbon load of harmful substances to be less than the first preset carbon load, the driving regeneration phase exit condition is met, and the driving regeneration phase is exited.

[0086] It can be understood that in the embodiment of the present invention, when the temperature rise duration is greater than the preset rise time, the driving regeneration stage is exited due to the over-temperature risk. At this time, the carbon load may not be less than the first preset carbon load. Therefore, when the over-temperature risk is eliminated, the driving regeneration stage is continued to be entered until the carbon load is less than the first preset carbon load, and the driving regeneration stage is exited to complete the treatment of harmful substances, thereby ensuring the normal operation of the vehicle system.

[0087] Based on the above embodiments, Figure 5 is a flow chart of a fourth driving regeneration control method provided according to an embodiment of the present invention. Figure 5 As shown, the control method includes:

[0088] S40, obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter.

[0089] S41. In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained.

[0090] S42: When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0091] S43: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0092] S44. Continue to obtain carbon loading.

[0093] Among them, after exiting the driving regeneration stage, the carbon load continues to be obtained to continue to monitor whether it is necessary to enter the driving regeneration stage again.

[0094] S45: When the carbon load is less than a second preset carbon load, the driving regeneration phase is not entered, wherein the second preset carbon load is greater than the first preset carbon load.

[0095] The second preset carbon load may be the lower limit of the carbon load for entering the driving regeneration phase, and the first preset carbon load is greater than the second preset carbon load. When the carbon load is less than the second preset carbon load, it means that the start condition of the driving regeneration phase is not met at this time, so the driving regeneration phase is not entered, and the elimination of harmful substances in the particulate filter is completed.

[0096] It can be understood that when the driving regeneration phase is exited because the carbon load is less than the first preset carbon load, since the second preset carbon load is greater than the first preset carbon load, the carbon load at the end must be less than the second preset carbon load, so the driving regeneration phase will not be entered again in a short time.

[0097] The technical solution of the embodiment of the present invention continues to monitor the carbon load after exiting the driving regeneration phase, and does not continue to enter the driving regeneration phase when the carbon load is continuously less than a second preset carbon load, thereby completing the elimination of harmful substances in the particulate filter.

[0098] Based on the above embodiments, Figure 6 is a flow chart of a fifth driving regeneration control method provided according to an embodiment of the present invention. Figure 6 As shown, the control method includes:

[0099] S50, obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter.

[0100] S51. During the driving regeneration phase, when the real-time temperature is greater than a first preset temperature, obtaining a temperature rise duration.

[0101] When the real-time temperature is greater than the first preset temperature, it indicates that there may be an over-temperature risk, so the temperature rise duration is obtained.

[0102] S52: Determine the temperature rise rate according to the temperature rise duration and the real-time temperature.

[0103] The temperature rise value per unit time, ie, the temperature rise rate, can be calculated based on the temperature rise duration and the real-time temperature.

[0104] For example, the real-time temperature at the first moment t1 is Tep1, and the real-time temperature at the second moment t2 is Tep2, then the temperature rise rate △T=(Tep2-Tep1) / (t2-t1).

[0105] S53: When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0106] S54: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0107] The technical solution of the embodiment of the present invention obtains the temperature rise duration when the real-time temperature is greater than the first preset temperature, and determines the temperature rise rate according to the temperature rise duration and the real-time temperature, thereby ensuring the accurate operation of the driving regeneration control method.

[0108] Based on the above embodiments, Figure 7 is a flow chart of a sixth driving regeneration control method provided according to an embodiment of the present invention. Figure 7 As shown, the control method includes:

[0109] S60, obtaining the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter.

[0110] S61: When the carbon load is greater than a third preset carbon load, entering a driving regeneration phase, wherein the third preset carbon load is greater than the first preset carbon load.

[0111] The third preset carbon load may be the upper limit of the carbon load for entering the driving regeneration phase. When the carbon load is greater than the third preset carbon load, it indicates that harmful substances need to be eliminated, so the driving regeneration phase is entered.

[0112] S62: When the real-time temperature is greater than the first preset temperature, obtain the temperature rise rate and the temperature rise duration.

[0113] S63: When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0114] S64: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0115] It can be understood that the third preset carbon load is greater than the second preset carbon load, and the second preset carbon load is greater than the first preset carbon load. The upper limit value for entering the driving regeneration phase is set larger, and the lower limit value is set smaller, thereby raising the entry standard for the driving regeneration phase and lowering the entry standard for the driving regeneration phase, which can reduce the number of over-temperature times and improve the reliability of the vehicle system.

[0116] The technical solution of the embodiment of the present invention enters the driving regeneration phase by judging when the carbon load is greater than a third preset carbon load, thereby improving the entry standard of the driving regeneration phase, reducing the number of overtemperatures, and improving the reliability of the vehicle system.

[0117] Based on the above embodiments, Figure 8 is a flow chart of a seventh driving regeneration control method provided according to an embodiment of the present invention. Figure 8 As shown, the control method includes:

[0118] S70: Obtain the ambient temperature.

[0119] The ambient temperature may be the ambient temperature of the current particulate collector, which may be obtained by setting a temperature sensor.

[0120] S71. Determine a first preset carbon loading according to the ambient temperature and a preset ambient temperature-carbon loading correspondence relationship.

[0121] The preset ambient temperature-carbon loading may be a pre-calibrated relationship between ambient temperature and carbon loading, and the first preset carbon loading may be determined by measuring the ambient temperature in combination with the preset ambient temperature-carbon loading corresponding relationship.

[0122] In some embodiments, the higher the ambient temperature, the higher the first preset carbon load and the lower the third preset carbon load, in order to reduce the time of driving regeneration, thereby reducing the risk of over-temperature and improving the reliability of the vehicle system.

[0123] S72. Obtain the real-time temperature, carbon load, remaining power of the power battery, and generator torque of the particulate filter.

[0124] S73. During the driving regeneration phase, when the real-time temperature is greater than the first preset temperature, obtain a temperature rise rate and a temperature rise duration.

[0125] S74. When the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque, and the remaining power is greater than the preset power, a torque reduction signal is output to the generator to control the generator to reduce the generator torque.

[0126] S75: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exit the driving regeneration phase.

[0127] The technical solution of the embodiment of the present invention determines a first preset carbon load based on the ambient temperature, adjusts the limit value of the carbon load for entering and exiting the driving regeneration phase, thereby further reducing the risk of overheating and the duration of temperature rise and improving the reliability of the vehicle system.

[0128] Based on the same inventive concept, Fig. 9is a connection diagram of a driving regeneration control device provided according to an embodiment of the present invention, such as Fig. 9 As shown, an embodiment of the present invention provides a driving regeneration control device, which is used to execute a driving regeneration control method, and the control device includes:

[0129] The parameter acquisition module 100 is used to obtain the real-time temperature of the particulate filter, the carbon load, the remaining power of the power battery and the generator torque.

[0130] The judgment module 200 is used to obtain the temperature rise rate and the temperature rise duration when the real-time temperature is greater than the first preset temperature during the driving regeneration stage.

[0131] The torque control module 300 is used to output a torque reduction signal to the generator to control the generator to reduce the generator torque when the temperature rise rate is greater than a preset temperature rate, the generator torque is greater than a preset torque, and the remaining power is greater than a preset power.

[0132] The mode exit module 400 is used to exit the driving regeneration phase when the temperature rise duration is greater than a preset rise time or the carbon load is less than a first preset carbon load.

[0133] Specifically, firstly, the parameter acquisition module 100 is used to acquire the real-time temperature, carbon load, remaining power of the power battery and generator torque of the particulate filter; then, the judgment module 200 is used to acquire the temperature rise rate and the temperature rise duration in the driving regeneration stage when the real-time temperature is greater than the first preset temperature; then, the torque control module 300 is used to output a torque reduction signal to the generator to control the generator to reduce the generator torque when the temperature rise rate is greater than the preset temperature rate, the generator torque is greater than the preset torque and the remaining power is greater than the preset power; then, the mode exit module 400 is used to exit the driving regeneration stage when the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load.

[0134] The technical solution of the embodiment of the present invention, by using the parameter acquisition module, the judgment module, the torque control module and the mode exit module, appropriately reduces the generator torque to reduce the over-temperature risk and the duration of temperature rise when there is an over-temperature risk and the generator torque reduction condition is met. If there is still an over-temperature risk after reducing the generator torque, the driving regeneration stage is exited in advance to prevent the over-temperature of the engine after-treatment system from affecting the normal operation of the system, thereby improving the reliability of the vehicle during operation and ensuring the normal operation of the vehicle system.

[0135] Based on the same inventive concept, an embodiment of the present invention further provides a computer device, Fig.10 FIG. 1 is a schematic diagram of an electronic device structure for a control method for driving regeneration according to an embodiment of the present invention. Fig.10As shown, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, a control method for vehicle regeneration is implemented.

[0136] Among them, electronic devices are intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0137] like Fig.10 As shown, the electronic device 50 includes at least one processor 51, and a memory connected to the at least one processor 51 in communication, such as a read-only memory (ROM) 52, a random access memory (RAM) 53, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 51 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 52 or the computer program loaded from the storage unit 58 to the random access memory (RAM) 53. In the RAM 53, various programs and data required for the operation of the electronic device 50 can also be stored. The processor 51, the ROM 52, and the RAM 53 are connected to each other through a bus 54. An input / output (I / O) interface 55 is also connected to the bus 54.

[0138] A number of components in the electronic device 50 are connected to the I / O interface 55, including: an input unit 56, such as a keyboard, a mouse, etc.; an output unit 57, such as various types of displays, speakers, etc.; a storage unit 58, such as a disk, an optical disk, etc.; and a communication unit 59, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 59 allows the electronic device 50 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0139] The processor 51 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 51 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 51 executes the various methods and processes described above, such as a control method applied to vehicle regeneration.

[0140] Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, a control method for vehicle regeneration is implemented.

[0141] Of course, the computer-readable storage medium provided in the embodiment of the present invention, whose computer-executable instructions are not limited to the method operations described above, can also execute the related operations in the driving regeneration control method provided in any embodiment of the present invention, and continue to refer to Fig.10 As shown, it is tangibly contained in a computer-readable storage medium, such as a storage unit 58. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 50 via the ROM 52 and / or the communication unit 59. When the computer program is loaded into the RAM 53 and executed by the processor 51, one or more steps of the control method applied to driving regeneration described above can be executed. Alternatively, in other embodiments, the processor 51 can be configured to execute the control method applied to driving regeneration in any other appropriate manner (for example, by means of firmware).

[0142] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0143] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0144] In the context of an embodiment of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0145] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0146] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0147] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0148] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0149] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling vehicle regeneration, characterized in that: include: Obtain the real-time temperature of the particulate filter, carbon load, remaining power of the power battery and generator torque; In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained; When the temperature rise rate is greater than a preset temperature rate, the generator torque is greater than a preset torque, and the remaining power is greater than a preset power, outputting a torque reduction signal to the generator to control the generator to reduce the generator torque; When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, exiting the driving regeneration phase; When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, after exiting the driving regeneration phase, the method further includes: Continue to obtain the real-time temperature and the carbon loading; When the carbon load is greater than or equal to the second preset carbon load and the temperature drop time is greater than the preset drop time, the driving regeneration phase is entered; wherein the temperature drop time is the duration when the real-time temperature is less than the second preset temperature.

2. The control method according to claim 1, characterized in that: When the carbon load is greater than or equal to the second preset carbon load and the temperature drop time is greater than the preset drop time, after entering the driving regeneration phase, the method further includes: When the carbon load is less than the first preset carbon load, the driving regeneration phase is exited.

3. The control method according to claim 1, characterized in that: When the temperature rise duration is greater than the preset rise time or the carbon load is less than the first preset carbon load, after exiting the driving regeneration phase, the method further includes: continuing to obtain the carbon loading; When the carbon load is less than a second preset carbon load, the driving regeneration phase is not entered; wherein the second preset carbon load is greater than the first preset carbon load.

4. The control method according to claim 1, characterized in that: In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained, including: In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, obtaining the temperature rise duration; A temperature rise rate is determined according to the temperature rise duration and the real-time temperature.

5. The control method according to claim 1, characterized in that: In the driving regeneration stage, when the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained, including: When the carbon load is greater than a third preset carbon load, the vehicle enters a driving regeneration phase; wherein the third preset carbon load is greater than the first preset carbon load; When the real-time temperature is greater than the first preset temperature, the temperature rise rate and the temperature rise duration are obtained.

6. The control method according to claim 1, characterized in that: The control method further comprises: Get the ambient temperature; A first preset carbon loading is determined according to the ambient temperature and a preset ambient temperature-carbon loading correspondence relationship.

7. A control device for driving regeneration, characterized in that: A control method for executing a vehicle regeneration control method according to any one of claims 1 to 6, the control device comprising: A parameter acquisition module is used to obtain the real-time temperature of the particulate filter, carbon load, remaining power of the power battery and generator torque; A judgment module, used for obtaining a temperature rise rate and a temperature rise duration when the real-time temperature is greater than a first preset temperature during a driving regeneration stage; a torque control module, configured to output a torque reduction signal to the generator to control the generator to reduce the generator torque when the temperature rise rate is greater than a preset temperature rate, the generator torque is greater than a preset torque, and the remaining power is greater than a preset power; A mode exit module, configured to exit the driving regeneration phase when the temperature rise duration is greater than a preset rise time or the carbon load is less than a first preset carbon load; The parameter acquisition module is also used to continue to acquire the real-time temperature and the carbon loading; The mode exit module is also used to enter the driving regeneration phase when the carbon load is greater than or equal to a second preset carbon load and the temperature drop time is greater than a preset drop time; wherein the temperature drop time is the duration when the real-time temperature is less than the second preset temperature.

8. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the control method as described in any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method as described in any one of claims 1 to 6 is implemented.

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