A regeneration control method, device, vehicle and medium for a hybrid vehicle

Abstract

The present invention discloses a regeneration control method, device, vehicle and medium for a hybrid vehicle. The regeneration control method for a hybrid vehicle includes: obtaining the minimum power generation torque required by the motor; obtaining the real-time carbon load and target carbon load of the engine; determining the engine working state according to the real-time carbon load and the target carbon load, wherein the engine working state includes the engine entering a regeneration mode; and completing regeneration according to the engine working state and the minimum power generation torque. By obtaining the minimum power generation torque, the engine load is increased, and the regeneration power efficiency is increased.

Description

Technical Field

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

[0002] In order to meet increasingly stringent emission standards, National VI engines are currently equipped with DPF (Diesel Particulate Filter) to capture carbon soot particles in the exhaust. DPF is a ceramic filter installed in the diesel engine emission system, which captures particulate emissions in the exhaust before they enter the atmosphere.

[0003] Hybrid vehicles are becoming more and more popular, especially light truck hybrid vehicles for urban logistics, which have been widely recognized by the public for their advantages in economy and power. Light truck hybrid vehicles have many starts and stops and low speeds. For example, when the road is crowded and there are many traffic lights, the engine runs at low speed and low load for a long time, resulting in low exhaust temperature, making it more difficult to regenerate the vehicle. How to achieve regeneration of hybrid vehicles has become an urgent problem to be solved in this field. Summary of the invention

[0004] The present invention provides a regeneration control method, device, vehicle and medium for a hybrid vehicle to solve the problem in the prior art that when the engine is in a low-load condition, the exhaust temperature is too low and regeneration is difficult during driving, thereby increasing the load of the engine to effectively increase the exhaust temperature and thus improve the regeneration power efficiency.

[0005] According to one aspect of the present invention, a regeneration control method for a hybrid vehicle is provided, wherein the hybrid vehicle comprises an engine, a motor, a power battery and a controller, wherein the controller is connected to the engine, the motor and the power battery respectively, and the regeneration control method for the hybrid vehicle comprises:

[0006] Obtaining the minimum power generation torque required by the motor;

[0007] Obtaining a real-time carbon loading and a target carbon loading of the engine;

[0008] Determining an engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode;

[0009] Regeneration is performed according to the engine operating state and the minimum power generation torque.

[0010] Optionally, obtain the minimum generating torque required by the motor, including:

[0011] Obtain engine exhaust temperature information and engine speed;

[0012] The minimum power generation torque required by the motor is obtained according to the engine exhaust temperature information or the engine speed.

[0013] Optionally, determining an engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode;

[0014] Determining whether the real-time carbon loading is greater than or equal to the target carbon loading;

[0015] If so, it is determined that the engine enters a regeneration mode;

[0016] If not, continue to maintain the current engine operating state.

[0017] Optionally, the real-time carbon loading and target carbon loading of the engine are obtained, and then the method further includes:

[0018] Acquire a first limit carbon loading according to the target carbon loading, wherein the first limit carbon loading is less than the target carbon loading;

[0019] Determining whether the real-time carbon loading is greater than or equal to the first limit carbon loading;

[0020] If yes, determining a vehicle driving mode based on the carbon load, wherein the vehicle driving mode includes a pure motor driving mode and a motor and engine hybrid driving mode;

[0021] If not, continue to maintain the current engine operating state.

[0022] Optionally, determining a motor drive operating mode based on carbon loading, including:

[0023] Get the real-time speed of the vehicle;

[0024] A vehicle driving operating mode based on the carbon loading is determined according to the real-time vehicle speed and the real-time carbon loading.

[0025] Optionally, after determining the vehicle driving working mode based on the carbon load, the method further includes:

[0026] Acquire the minimum exhaust temperature of the engine according to the minimum power generation torque;

[0027] Get the motor operating speed;

[0028] Determining the regeneration time according to the engine minimum exhaust temperature, the motor operating speed and the target carbon load;

[0029] determining the amount of power generated by the motor during the regeneration process according to the regeneration time;

[0030] Obtaining a real-time SOC value of the power battery;

[0031] The vehicle operating state is adjusted according to the motor power generation and the real-time SOC value.

[0032] Optionally, adjusting the vehicle operating state according to the motor power generation and the real-time SOC value includes:

[0033] Acquire the power consumption of the power battery according to the real-time SOC value;

[0034] Determining whether the power consumption of the power battery is greater than or equal to the power generation of the motor;

[0035] If yes, then exit the pure motor drive working mode;

[0036] If not, the pure motor drive working mode continues.

[0037] According to another aspect of the present invention, a regeneration control device for a hybrid vehicle is provided, and the regeneration control device for a hybrid vehicle executes a regeneration control method for a hybrid vehicle according to any one of the above aspects, and the regeneration control device for a hybrid vehicle comprises:

[0038] A minimum power generation torque acquisition module, used for acquiring the minimum power generation torque required by the motor;

[0039] A real-time carbon loading and target carbon loading acquisition module is used to acquire the real-time carbon loading and target carbon loading of the engine;

[0040] an engine operating state acquisition module, used to determine the engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode;

[0041] The regeneration completion module is used to complete the regeneration according to the engine operating state and the minimum power generation torque.

[0042] According to another aspect of the present invention, a hybrid vehicle is provided, the hybrid vehicle comprising: an engine, a motor, a power battery and a controller, the controller being connected to the engine, the motor and the power battery respectively;

[0043] The controller is used to execute the regeneration control method for a hybrid vehicle according to any one of the above aspects.

[0044] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the regeneration control method for a hybrid vehicle described in any one of the above aspects when executed.

[0045] The technical solution of the embodiment of the present invention provides a regeneration control method for a hybrid vehicle, including: obtaining the minimum power generation torque required by the motor; obtaining the real-time carbon load and the target carbon load of the engine; determining the engine working state according to the real-time carbon load and the target carbon load, wherein the engine working state includes the engine entering the regeneration mode; and completing the regeneration according to the engine working state and the minimum power generation torque. By obtaining the minimum power generation torque, the engine load is increased, and the regeneration power efficiency is increased.

[0046] 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

[0047] 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.

[0048] Figure 1 A flow chart of a regeneration control method for a hybrid vehicle provided by an embodiment of the present invention;

[0049] Figure 2 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention;

[0050] Figure 3 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention;

[0051] Figure 4 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention;

[0052] Figure 5 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention;

[0053] Figure 6 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention;

[0054] Figure 7 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention;

[0055] Figure 8 A schematic structural diagram of a regeneration control device for a hybrid vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0056] 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.

[0057] 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.

[0058] Figure 1 A flow chart of a regeneration control method for a hybrid vehicle provided in an embodiment of the present invention. This embodiment is applicable to the regeneration control of a hybrid vehicle. The method can be executed by a regeneration control device of a hybrid vehicle. The regeneration control device of the hybrid vehicle can be implemented in the form of hardware and / or software. The regeneration control device of the hybrid vehicle can be configured in a hybrid vehicle. A hybrid vehicle includes an engine, a motor, a power battery and a controller. The engine is connected to the motor. The engine can drive the motor to work. At the same time, both can drive the vehicle. The motor can generate electricity and also drive. The controller can be an ECU (Electronic Control Unit), also known as a "driving computer", "on-board computer", etc. The controller is connected to the engine, the motor and the power battery respectively. The controller can obtain parameters such as the carbon load of the engine, the working state of the engine, the charge SOC value of the power battery, the working speed of the motor, etc. The controller is used to execute any of the regeneration control methods for hybrid vehicles described below. Figure 1 As shown, the method includes:

[0059] S101, obtaining the minimum generating torque required by the motor.

[0060] Among them, the minimum power generation torque can keep the motor in the power generation state, so that the power battery is in the charging state, and then the battery SOC value will gradually increase. Since the motor and the engine are connected, the minimum power generation torque required by the motor can be set according to the type of different engines. When the engine enters the regeneration mode, the motor is in the power generation state, and the corresponding engine is always in the working state, which effectively improves the engine under high load conditions, thereby increasing the exhaust temperature and ensuring the regeneration effect.

[0061] S102, obtaining the real-time carbon loading and target carbon loading of the engine.

[0062] The controller obtains the carbon load of the engine in real time, which is convenient for timely active regeneration, and can also judge the regeneration time to ensure the combustion effect of carbon particles. The target carbon load is the maximum amount of carbon particles that can be accumulated. The target carbon load can be set according to the type of different engines, and the embodiment of the present invention does not make specific restrictions.

[0063] S103, determining the engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode.

[0064] Among them, the real-time carbon loading and the target carbon loading are compared, and then the engine working state is judged in real time. That is, when the real-time carbon loading is greater than or equal to the target carbon loading, carbon particles accumulate and active regeneration needs to be started to burn the carbon particles.

[0065] S104, completing regeneration according to the engine operating state and the minimum power generation torque.

[0066] Among them, when the engine enters the regeneration mode, it is necessary to output the minimum power generation torque to the motor so that the motor is always in the power generation state. At the same time, the engine is also in a high-load condition, which increases the exhaust temperature and reduces the regeneration time to ensure the smooth progress of the regeneration process.

[0067] The embodiment of the present invention obtains the minimum power generation torque required by the motor; obtains the real-time carbon load and the target carbon load of the engine; determines the engine working state according to the real-time carbon load and the target carbon load, wherein the engine working state includes the engine entering the regeneration mode; and completes the regeneration according to the engine working state and the minimum power generation torque. By obtaining the minimum power generation torque, the motor is always in the power generation state, thereby increasing the engine's workload and improving the regeneration power efficiency.

[0068] Optional, Figure 2 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention, such as Figure 2 As shown, the method includes:

[0069] S201, obtaining engine exhaust temperature information and engine speed.

[0070] Among them, the exhaust temperature information of the engine can be obtained correspondingly for different engines, and the exhaust temperature information includes the exhaust temperature. At the same time, the engine speed can also be obtained correspondingly according to different engines.

[0071] S202, obtaining the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed.

[0072] Among them, for hybrid vehicles, the minimum power generation torque required by the motor can be obtained according to the engine exhaust temperature information. Generally, the higher the engine exhaust temperature, the smaller the corresponding minimum power generation torque; the lower the engine exhaust temperature, the larger the corresponding minimum power generation torque. The minimum power generation torque required by the motor can also be obtained according to the engine speed. Generally, the higher the engine speed, the smaller the corresponding minimum power generation torque; the lower the engine speed, the larger the corresponding minimum power generation torque. For example, Table 1 shows a corresponding relationship between the engine speed and the minimum power generation torque.

[0073] Table 1

[0074]

[0075] S203, obtaining the real-time carbon loading and target carbon loading of the engine.

[0076] S204, determining the engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode.

[0077] S205, completing regeneration according to the engine operating state and the minimum power generation torque.

[0078] The embodiment of the present invention obtains the engine exhaust temperature information and the engine speed, obtains the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed, obtains the real-time carbon load and the target carbon load of the engine; determines the engine working state according to the real-time carbon load and the target carbon load, wherein the engine working state includes the engine entering the regeneration mode; and completes the regeneration according to the engine working state and the minimum power generation torque. The minimum power generation torque is obtained by the engine exhaust temperature information or the engine speed, so that the motor is always in the power generation state, thereby increasing the workload of the engine and improving the regeneration power efficiency.

[0079] Optional, Figure 3 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention, such as Figure 3 As shown, the method includes:

[0080] S301, obtaining engine exhaust temperature information and engine speed.

[0081] S302, obtaining the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed.

[0082] S303, obtaining the real-time carbon loading and target carbon loading of the engine.

[0083] S304, determine whether the real-time carbon loading is greater than or equal to the target carbon loading; if so, execute step S305; if not, execute step S306.

[0084] S305, determining whether the engine enters a regeneration mode.

[0085] S306, continue to maintain the current engine operating state.

[0086] Among them, when the real-time carbon loading of the engine is greater than or equal to the target carbon loading, it is considered that the accumulated amount of carbon particles in the current engine is sufficient, and the engine needs to enter the regeneration mode, perform active regeneration, and burn the carbon particles; when the real-time carbon loading of the engine is less than the target carbon loading, it is considered that the accumulated amount of carbon particles in the current engine is small, and active regeneration is not required, and the current working state of the engine can continue to be guaranteed. For example, the hybrid vehicle is in a pure electric drive working mode and the engine is in an off state.

[0087] S307, completing regeneration according to the engine entering the regeneration mode and the minimum power generation torque.

[0088] The embodiment of the present invention obtains the minimum power generation torque required by the motor; obtains the real-time carbon load and the target carbon load of the engine; determines the working state of the engine by comparing the real-time carbon load and the target carbon load, and determines whether the engine enters the regeneration mode; and completes the regeneration according to the engine entering the regeneration mode and the minimum power generation torque. After the engine enters the regeneration mode, the motor is always in the power generation state with the minimum power generation torque, thereby increasing the workload of the engine and improving the regeneration power efficiency.

[0089] Optional, Figure 4 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention, such as Figure 4 As shown, the method includes:

[0090] S401, obtaining engine exhaust temperature information and engine speed.

[0091] S402, obtaining the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed.

[0092] S403, obtaining the real-time carbon loading and target carbon loading of the engine.

[0093] S404: Obtain a first limit carbon loading according to the target carbon loading, where the first limit carbon loading is less than the target carbon loading.

[0094] Among them, exemplarily, when the target carbon loading is 4g / L, the first limit carbon loading is 80% of the target carbon loading, then the first limit carbon loading is 3.2g / L, and the first limit carbon loading is less than the target carbon loading. At this time, the engine has not entered the regeneration mode.

[0095] S405, determining whether the real-time carbon loading is greater than or equal to the first limit carbon loading; if so, executing step S406; if not, executing step S407.

[0096] S406, determining a vehicle driving operating mode based on the carbon load, wherein the vehicle driving operating mode includes a pure motor driving operating mode and a motor and engine hybrid driving operating mode.

[0097] S407, continue to maintain the current engine operating state.

[0098] Among them, when the real-time carbon load of the engine is greater than or equal to the first limit carbon load, it is considered that the engine is about to enter the regeneration mode. At this time, the controller activates the vehicle drive working mode based on the carbon load. When the real-time carbon load is high at this time, the pure motor drive working mode accounts for a high proportion, which can accelerate the discharge process of the power battery, so that there is space in the power battery to store the electricity generated in the subsequent regeneration process to avoid resource waste. When the real-time carbon load of the engine is less than the first limit carbon load, it is considered that the accumulation of carbon particles in the current engine is small, and active regeneration will not be performed in a short time. The current working state of the engine can continue to be guaranteed. For example, the hybrid vehicle is in the pure electric drive working mode and the engine is in the off state.

[0099] S408, determining whether the real-time carbon loading is greater than or equal to the target carbon loading; if so, executing step S409; if not, executing step S410.

[0100] S409, determining that the engine enters a regeneration mode.

[0101] S410, continue to maintain the current engine operating state.

[0102] S411, regeneration is completed according to the engine entering the regeneration mode and the minimum power generation torque.

[0103] The embodiment of the present invention obtains the minimum generating torque required by the motor; obtains the real-time carbon loading and the target carbon loading of the engine; obtains a first limit carbon loading according to the real-time carbon loading and the target carbon loading, and further determines a vehicle driving working mode based on the carbon loading according to a comparison between the real-time carbon loading and the first limit carbon loading, thereby ensuring that the power battery can be consumed when the engine is about to enter the regeneration mode, so that the power generated by the regeneration process can be stored after the engine enters the regeneration mode, thereby avoiding waste of resources. At the same time, during the regeneration process, the motor is always in a generating state with the minimum generating torque, thereby increasing the workload of the engine and improving the regeneration power efficiency.

[0104] Optional, Figure 5 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention, such as Figure 5 As shown, the method includes:

[0105] S501, obtaining engine exhaust temperature information and engine speed.

[0106] S502, obtaining the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed.

[0107] S503, obtaining the real-time carbon loading and target carbon loading of the engine.

[0108] S504: Obtain a first limit carbon loading according to the target carbon loading, where the first limit carbon loading is less than the target carbon loading.

[0109] S505, determining whether the real-time carbon loading is greater than or equal to the first limit carbon loading; if so, executing step S506; if not, executing step S508.

[0110] S506, obtaining the real-time speed of the vehicle.

[0111] S507, determining a vehicle driving operating mode based on the carbon load according to the real-time vehicle speed and the real-time carbon load, wherein the vehicle driving operating mode includes a pure motor driving operating mode and a motor and engine hybrid driving operating mode.

[0112] Among them, the vehicle driving working mode is adjusted accordingly by obtaining the real-time vehicle speed and real-time carbon load. For hybrid vehicles, the vehicle driving working mode includes a pure motor driving working mode and a motor and engine hybrid driving working mode. The vehicle driving working mode is reasonably selected to ensure the normal operation of the vehicle. For example, Table 2 shows a correspondence between the real-time carbon load, the real-time vehicle speed and the vehicle driving working mode. The horizontal axis in the table represents the real-time carbon load (unit g / L), and the vertical axis represents the real-time vehicle speed (unit km / h). The value 0 in the table represents the pure motor driving working mode, and the value 1 represents the motor and engine hybrid driving working mode.

[0113] Table 2

[0114]

[0115] S508, continue to maintain the current engine operating state.

[0116] S509, determining whether the real-time carbon loading is greater than or equal to the target carbon loading; if so, executing step S510; if not, executing step S511.

[0117] S510, determining that the engine enters a regeneration mode.

[0118] S511, continue to maintain the current engine operating state.

[0119] S512, regeneration is completed according to the engine entering the regeneration mode and the minimum power generation torque.

[0120] The embodiment of the present invention obtains the minimum generating torque required by the motor; obtains the real-time carbon loading and the target carbon loading of the engine; obtains the first limit carbon loading according to the real-time carbon loading and the target carbon loading, and also according to the target carbon loading, and determines the vehicle driving working mode based on the carbon loading according to the real-time carbon loading, the first limit carbon loading and the real-time vehicle speed, so as to ensure the smooth progress of the engine regeneration process. At the same time, during the regeneration process, the motor is always in the generating state with the minimum generating torque, thereby increasing the workload of the engine and improving the regeneration power efficiency.

[0121] Optional, Figure 6 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention, such as Figure 6 As shown, the method includes:

[0122] S601, obtaining engine exhaust temperature information and engine speed.

[0123] S602, obtaining the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed.

[0124] S603, obtaining the real-time carbon loading and target carbon loading of the engine.

[0125] S604: Obtain a first limit carbon loading according to the target carbon loading, where the first limit carbon loading is less than the target carbon loading.

[0126] S605, determine whether the real-time carbon loading is greater than or equal to the first limit carbon loading; if so, execute step S606; if not, execute step S608.

[0127] S606, obtaining the real-time speed of the vehicle.

[0128] S607, determining a vehicle driving operating mode based on the carbon load according to the real-time vehicle speed and the real-time carbon load, wherein the vehicle driving operating mode includes a pure motor driving operating mode and a motor and engine hybrid driving operating mode.

[0129] S608, continue to maintain the current engine operating state.

[0130] S609: Obtain the minimum exhaust temperature of the engine according to the minimum power generation torque.

[0131] Among them, the minimum exhaust temperature of the current engine can be obtained according to the minimum power generation torque required by the motor, and corresponding estimates can be made for different engines based on their minimum power generation torque.

[0132] S610, obtaining the motor operating speed.

[0133] The motor operating speed can be set accordingly according to the motor driving process or the motor generating process to ensure the normal operation of the motor.

[0134] S611, determining the regeneration time according to the minimum exhaust temperature of the engine, the motor operating speed and the target carbon load.

[0135] Among them, the engine regeneration time can be estimated based on the engine's minimum exhaust temperature, motor operating speed and target carbon loading, which is convenient for subsequent more accurate estimation of the motor power generation during the regeneration process and ensures the smooth progress of the regeneration process.

[0136] S612, determining the amount of power generated by the motor during the regeneration process according to the regeneration time.

[0137] Among them, according to the regeneration time, the minimum exhaust temperature of the engine, the motor operating speed and the target carbon loading can also be combined to obtain the motor power generation during the regeneration process, and then the discharge amount of the power battery can be adjusted accordingly. It can be adjusted to a pure motor drive working mode to consume the power in the power battery and ensure that there is enough space in the power battery to store the power generated during the regeneration process.

[0138] S613, obtaining a real-time SOC value of the power battery.

[0139] Among them, when the vehicle adopts the pure motor drive working mode, the real-time SOC value of the power battery is obtained in real time, and the SOC value reflects the remaining capacity status of the power battery.

[0140] S614, adjusting the vehicle operating state according to the motor power generation and the real-time SOC value.

[0141] Among them, the vehicle operating status is adjusted accordingly according to the motor power generation and the real-time SOC value. When there is enough space in the power battery to store the motor power generation, the pure motor drive working mode can be exited without consuming power in the power battery.

[0142] S615, determine whether the real-time carbon loading is greater than or equal to the target carbon loading; if so, execute step S616; if not, execute step S617.

[0143] S616, determining that the engine enters the regeneration mode.

[0144] S617, continue to maintain the current engine operating state.

[0145] S618, regeneration is completed according to the engine entering the regeneration mode and the minimum power generation torque.

[0146] The embodiment of the present invention obtains the minimum exhaust temperature of the engine according to the minimum power generation torque; obtains the motor operating speed; determines the regeneration time according to the minimum exhaust temperature of the engine, the motor operating speed and the target carbon loading; determines the motor power generation during the regeneration process according to the regeneration time; obtains the real-time SOC value of the power battery; adjusts the vehicle operating state according to the motor power generation and the real-time SOC value, thereby ensuring that the power battery is consumed before the engine enters the regeneration mode, ensuring the smooth progress of the subsequent regeneration process, and ensuring the regeneration power efficiency.

[0147] Optional, Figure 7 A flowchart of another hybrid vehicle regeneration control method provided by an embodiment of the present invention, such as Figure 7 As shown, the method includes:

[0148] S701, obtaining engine exhaust temperature information and engine speed.

[0149] S702, obtaining the minimum power generation torque required by the motor according to the engine exhaust temperature information or the engine speed.

[0150] S703, obtaining the real-time carbon loading and target carbon loading of the engine.

[0151] S704, obtaining a first limit carbon loading according to the target carbon loading, the first limit carbon loading being less than the target carbon loading.

[0152] S705, determine whether the real-time carbon loading is greater than or equal to the first limit carbon loading; if so, execute step S706; if not, execute step S708.

[0153] S706, obtaining the real-time speed of the vehicle.

[0154] S707, determining a vehicle driving operating mode based on the carbon load according to the real-time vehicle speed and the real-time carbon load, wherein the vehicle driving operating mode includes a pure motor driving operating mode and a motor and engine hybrid driving operating mode.

[0155] S708, continue to maintain the current engine operating state.

[0156] S709: Obtain the minimum exhaust temperature of the engine according to the minimum power generation torque.

[0157] S710, obtaining the motor operating speed.

[0158] S711, determining the regeneration time according to the minimum exhaust temperature of the engine, the motor operating speed and the target carbon load.

[0159] S712, determining the amount of power generated by the motor during the regeneration process according to the regeneration time.

[0160] S713, obtaining a real-time SOC value of the power battery.

[0161] S714, obtaining the power consumption of the power battery according to the real-time SOC value.

[0162] S715, determine whether the power consumption of the power battery is greater than or equal to the power generation of the motor; if so, execute step S716; if not, execute step S717.

[0163] S716, exit the pure motor drive working mode.

[0164] S717, continue to be in pure motor drive working mode.

[0165] Among them, when the vehicle is in the pure electric drive working mode, after running for a period of time, the real-time SOC value of the power battery is obtained, and the power consumption of the vehicle in the pure electric drive working mode is obtained according to the real-time SOC value, that is, when the SOC value of the power battery is fully charged is 100%, the real-time SOC value of the power battery is 60% at this time, and the difference between the two is calculated to obtain the power consumption of the power battery is 40%. When the power consumption of the power battery is greater than or equal to the power generation of the motor, it is considered that when there is enough space in the power battery to store the power generation of the motor, the pure motor drive working mode can be exited, and there is no need to consume power in the power battery. When the power consumption of the power battery is less than the power generation of the motor, it is considered that the current space of the power battery is not enough to accommodate the power generated by the regeneration process, and the power battery needs to be consumed, and it continues to be in the pure motor drive working mode.

[0166] S718, determine whether the real-time carbon loading is greater than or equal to the target carbon loading; if so, execute step S719; if not, execute step S720.

[0167] S719, determining that the engine enters the regeneration mode.

[0168] S720, continue to maintain the current engine operating state.

[0169] S721, regeneration is completed according to the engine entering the regeneration mode and the minimum power generation torque.

[0170] The embodiment of the present invention makes a comparison and judgment based on the motor power generation and the real-time SOC value, and accordingly adjusts the vehicle to exit the pure motor drive working mode or continue in the pure motor drive working mode, thereby ensuring that the power battery is consumed before the engine enters the regeneration mode, ensuring the smooth progress of the subsequent regeneration process, and ensuring the regeneration power efficiency.

[0171] Figure 8 A schematic diagram of the structure of a regeneration control device for a hybrid vehicle provided in an embodiment of the present invention, wherein the regeneration control device for a hybrid vehicle executes a regeneration control method for a hybrid vehicle including any one of the above embodiments, and the regeneration control device for a hybrid vehicle includes:

[0172] A minimum power generation torque acquisition module 201 is used to acquire the minimum power generation torque required by the motor;

[0173] A real-time carbon loading and target carbon loading acquisition module 202 is used to acquire the real-time carbon loading and target carbon loading of the engine;

[0174] The engine working state acquisition module 203 is used to determine the engine working state according to the real-time carbon loading and the target carbon loading, wherein the engine working state includes the engine entering the regeneration mode;

[0175] The regeneration completion module 204 is configured to complete the regeneration according to the engine operating state and the minimum power generation torque.

[0176] It should be noted that, since the regeneration control device for a hybrid vehicle provided in this embodiment includes any of the regeneration control methods for a hybrid vehicle provided in the embodiments of the present invention, it has the same or corresponding beneficial effects as the regeneration control method for a hybrid vehicle, and will not be described in detail here.

[0177] An embodiment of the present invention further provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a processor to implement the regeneration control method for a hybrid vehicle described in any one of the above embodiments when executed.

[0178] Computer readable storage medium can be a tangible medium that can contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. Computer readable storage medium can include but is not limited to electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the above. Alternatively, computer readable storage medium can be a machine readable signal medium. More specific examples of machine readable storage medium can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0179] 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.

[0180] 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 regeneration control method for a hybrid vehicle, It is characterized in that The hybrid vehicle includes an engine, a motor, a power battery and a controller, wherein the controller is connected to the engine, the motor and the power battery respectively. The regeneration control method of the hybrid vehicle includes: Obtaining the minimum power generation torque required by the motor; Obtaining a real-time carbon loading and a target carbon loading of the engine; Determining an engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode; completing regeneration according to the engine operating state and the minimum power generation torque; Among them, the real-time carbon loading and the target carbon loading of the engine are obtained, and then it also includes: obtaining a first limit carbon loading according to the target carbon loading, the first limit carbon loading is less than the target carbon loading; judging whether the real-time carbon loading is greater than or equal to the first limit carbon loading; if so, determining a vehicle driving working mode based on the carbon loading, wherein the vehicle driving working mode includes a pure motor driving working mode and a motor and engine hybrid driving working mode; if not, continuing to maintain the current engine working state.

2. The regeneration control method for a hybrid vehicle according to claim 1, It is characterized in that Obtain the minimum generating torque required by the motor, including: Obtain engine exhaust temperature information and engine speed; The minimum power generation torque required by the motor is obtained according to the engine exhaust temperature information or the engine speed.

3. The regeneration control method for a hybrid vehicle according to claim 1, It is characterized in that Determining an engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode; Determining whether the real-time carbon loading is greater than or equal to the target carbon loading; If so, it is determined that the engine enters a regeneration mode; If not, continue to maintain the current engine operating state.

4. The regeneration control method for a hybrid vehicle according to claim 1, It is characterized in that Determine the motor drive operating mode based on carbon loading, including: Get the real-time speed of the vehicle; A vehicle driving operating mode based on the carbon loading is determined according to the real-time vehicle speed and the real-time carbon loading.

5. The regeneration control method for a hybrid vehicle according to claim 1, It is characterized in that After determining the vehicle driving mode based on carbon load, it also includes: Acquire the minimum exhaust temperature of the engine according to the minimum power generation torque; Get the motor operating speed; Determining the regeneration time according to the engine minimum exhaust temperature, the motor operating speed and the target carbon load; determining the amount of power generated by the motor during the regeneration process according to the regeneration time; Obtaining a real-time SOC value of the power battery; The vehicle operating state is adjusted according to the motor power generation and the real-time SOC value.

6. The regeneration control method for a hybrid vehicle according to claim 5, It is characterized in that Adjusting the vehicle operation state according to the motor power generation and the real-time SOC value includes: Acquire the power consumption of the power battery according to the real-time SOC value; Determining whether the power consumption of the power battery is greater than or equal to the power generation of the motor; If yes, then exit the pure motor drive working mode; If not, the pure motor drive working mode continues.

7. A regeneration control device for a hybrid vehicle, It is characterized in that The regeneration control device of the hybrid vehicle executes the regeneration control method of the hybrid vehicle according to any one of claims 1 to 6, and the regeneration control device of the hybrid vehicle comprises: A minimum power generation torque acquisition module, used for acquiring the minimum power generation torque required by the motor; A real-time carbon loading and target carbon loading acquisition module is used to acquire the real-time carbon loading and target carbon loading of the engine; an engine operating state acquisition module, used to determine the engine operating state according to the real-time carbon loading and the target carbon loading, wherein the engine operating state includes the engine entering a regeneration mode; The regeneration completion module is used to complete the regeneration according to the engine operating state and the minimum power generation torque.

8. A hybrid vehicle, It is characterized in that The hybrid vehicle comprises: an engine, a motor, a power battery and a controller, wherein the controller is connected to the engine, the motor and the power battery respectively; The controller is used to execute the regeneration control method for a hybrid vehicle according to any one of claims 1 to 6.

9. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the regeneration control method for a hybrid vehicle according to any one of claims 1 to 6 when executed.

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