Parking engine rotating speed control method and device, extended-range automobile and storage medium

Abstract

The invention discloses a parking engine rotating speed control method and device, an extended-range automobile and a storage medium. The parking engine rotating speed control method is applied to the range-extended automobile, the range-extended automobile comprises a range-extended system, the range-extended system comprises an engine and a generator, and the parking engine rotating speed control method comprises the steps that when the range-extended system has a parking regeneration requirement and a power generation requirement at the same time, parking power generation required power corresponding to each parking regeneration stage is obtained; the parking power generation required rotating speed corresponding to the parking regeneration stage is determined according to the parking power generation required power; and according to the parking regeneration required rotating speed and the parking power generation required rotating speed corresponding to each parking regeneration stage, the generator set rotating speed of the generator is determined, the engine set torque of the engine is determined based on the generator set rotating speed, and the engine is controlled to complete parking regeneration. Parking regeneration and parking power generation requirements are met at the same time, namely, the parking regeneration and parking power generation requirements are organically combined.

Description

Technical Field

[0001] The present invention relates to the technical field of parking regeneration control, and particularly relates to a method and device for controlling the engine speed during parking, an extended-range electric vehicle, and a storage medium. Background Art

[0002] Parking regeneration (DPF regeneration) is a self-cleaning process of the diesel particulate filter (DPF) in the exhaust system of a diesel vehicle. By burning the accumulated carbon particulate matter (such as hydrocarbons, nitrogen oxides, etc.), the filtering ability is restored. When the particulate matter load in the DPF reaches a set threshold (usually 80% of the volume), the vehicle control system can automatically or manually initiate regeneration.

[0003] Due to emission upgrade requirements, there may be a situation where the engine needs parking regeneration during parking regeneration of an extended-range electric vehicle. At the same time, according to the actual operating conditions of the vehicle, there may also be a situation where the extended-range system needs parking charging. These two situations have their own requirements for the engine, and currently, it is impossible to combine the two requirements to ensure the smooth completion of parking regeneration, as well as the stability and reliability of parking regeneration. Summary of the Invention

[0004] The present invention provides a method and device for controlling the engine speed during parking, an extended-range electric vehicle, and a storage medium to solve the problem that it is currently impossible to complete the parking regeneration control by combining the requirements of parking regeneration and parking charging simultaneously.

[0005] According to one aspect of the present invention, there is provided a method for controlling the engine speed during parking. The method for controlling the engine speed during parking is applied to an extended-range electric vehicle. The extended-range electric vehicle includes an extended-range system, and the extended-range system includes an engine and a generator. The method for controlling the engine speed during parking includes:

[0006] When the extended-range system has a parking regeneration requirement and at the same time has a power generation requirement, obtain the parking power generation demand power corresponding to each parking regeneration stage, and determine the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power;

[0007] Based on the parking regeneration demand speed and the parking power generation demand speed corresponding to each parking regeneration stage, determine the generator set speed of the generator, and based on the generator set speed, determine the engine set torque of the engine to control the engine to complete parking regeneration.

[0008] Optionally, the parking regeneration stage includes an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage, and a sediment catalytic oxidation stage;

[0009] Determining the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power includes:

[0010] According to the parked vehicle power generation demand powers corresponding to the adsorption stage, low-temperature oxidation stage, drying stage, regeneration stage, and sediment catalytic oxidation stage, respectively determine the parked vehicle power generation demand speeds corresponding to the adsorption stage, low-temperature oxidation stage, drying stage, regeneration stage, and sediment catalytic oxidation stage.

[0011] Optionally, determining the parked vehicle power generation demand speed corresponding to the parked vehicle regeneration stage according to the parked vehicle power generation demand power includes:

[0012] The demand speed obtained by querying the power-speed curve according to the parked vehicle power generation demand power is determined as the parked vehicle power generation demand speed corresponding to the parked vehicle regeneration stage.

[0013] Optionally, determining the generator set speed of the generator according to the parked vehicle regeneration demand speed and the parked vehicle power generation demand speed corresponding to each parked vehicle regeneration stage includes:

[0014] The larger demand speed among the parked vehicle regeneration demand speed and the parked vehicle power generation demand speed corresponding to each parked vehicle regeneration stage is determined as the generator set speed of the generator.

[0015] Optionally, the parked vehicle regeneration stage includes a sediment catalytic oxidation stage;

[0016] The parked vehicle engine speed control method further includes:

[0017] After the engine enters the sediment catalytic oxidation stage, control the engine torque setting of the engine to 0.

[0018] Optionally, determining the engine set torque of the engine based on the generator set speed includes:

[0019] Multiply the parked vehicle power generation demand power by 9550, and then divide by the generator set speed to obtain the engine set torque of the engine.

[0020] According to another aspect of the present invention, there is provided a parked vehicle engine speed control device. The parked vehicle engine speed control device is applied to an extended-range electric vehicle. The extended-range electric vehicle includes an extended-range system. The extended-range system includes an engine and a generator. The parked vehicle engine speed control device includes:

[0021] A parked vehicle power generation demand speed determination module, configured to execute when the extended-range system has a parked vehicle regeneration demand and at the same time has a power generation demand, obtain the initial parked vehicle power generation demand power corresponding to each parked vehicle regeneration stage, and determine the parked vehicle power generation demand speed corresponding to the parked vehicle regeneration stage according to the initial parked vehicle power generation demand power;

[0022] The parking engine speed control module is used to execute the determination of the generator set speed of the generator based on the parking regeneration required speed and the parking power generation required speed corresponding to each parking regeneration stage, so as to determine the engine set torque of the engine based on the generator set speed and control the engine to complete parking regeneration.

[0023] Optionally, the parking regeneration stage includes an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage, and a sediment catalytic oxidation stage;

[0024] The parking power generation required speed corresponding to the parking regeneration stage is determined according to the parking power generation required power, specifically for:

[0025] According to the parking power generation required power corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage, and the sediment catalytic oxidation stage, the parking power generation required speeds corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage, and the sediment catalytic oxidation stage are respectively determined.

[0026] According to another aspect of the present invention, a range-extended vehicle is provided. The range-extended vehicle includes:

[0027] At least one processor; and,

[0028] A memory communicatively connected to the at least one processor; wherein,

[0029] The memory stores a computer program executable by the at least one processor. The computer program is executed by the at least one processor so that the at least one processor can execute the parking engine speed control method of any embodiment of the present invention.

[0030] According to another aspect of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions for causing a processor to implement the parking engine speed control method of any embodiment of the present invention when executed.

[0031] The technical solution of the embodiment of the present invention, the parking engine speed control method is applied to an extended-range electric vehicle, and the extended-range electric vehicle includes an extended-range system. The extended-range system includes an engine and a generator. The parking engine speed control method includes: when there is a parking regeneration demand and a power generation demand in the extended-range system at the same time, obtaining the parking power generation demand power corresponding to each parking regeneration stage, and determining the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power, that is, organically combining parking regeneration and parking power generation demands, so as to simultaneously meet the demands of power generation and regeneration. Further, determining the generator set speed of the generator according to the parking regeneration demand speed and the parking power generation demand speed corresponding to each parking regeneration stage, so as to determine the engine set torque of the engine based on the generator set speed, control the engine to complete parking regeneration, and can also quickly increase the exhaust temperature by increasing the engine load to achieve the purpose of reducing carbon deposits as soon as possible.

[0032] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used 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

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 is a flowchart of a parking engine speed control method provided according to an embodiment of the present invention;

[0035] Figure 2 is a principle architecture diagram of a parking engine speed control method provided according to an embodiment of the present invention;

[0036] Figure 3 is a structural schematic diagram of a parking engine speed control device provided according to an embodiment of the present invention;

[0037] Figure 4 is a structural schematic diagram of an extended-range electric vehicle implementing the parking engine speed control method of the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the description 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 such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] Figure 1 The embodiment of the present invention provides a flowchart of a parking engine speed control method. This embodiment is applicable to the situation where the engine needs to perform parking regeneration and the range extender system needs to perform parking charging for parking engine speed control due to emission upgrade requirements. This parking engine speed control method can be executed by a parking engine speed control device, which can be implemented in the form of hardware and / or software, and the parking engine speed control device can be configured in a range-extended electric vehicle or a range-extended hybrid vehicle and other range-extended new energy vehicles.

[0041] This parking engine speed control method is applied to a range-extended vehicle, and the range-extended vehicle includes a range extender system. The range extender system includes an engine and a generator. As Figure 1 shown, the parking engine speed control method includes:

[0042] S110. When the range extender system has a parking regeneration demand and at the same time has a power generation demand, obtain the parking power generation demand power corresponding to each parking regeneration stage, and determine the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power.

[0043] When there is only a parking regeneration demand for the range extender system, at this time, the engine completely follows the traditional regeneration control method. The engine adopts speed control, the generator adopts torque control, and the range extender controller RCU (Rxtender Control Unit) controls the engine controller ECU (Engine Control Unit) to work according to the regeneration demand speed. At this time, the generating torque of the motor controller MCU (Motor Control Unit) is set to 0.

[0044] In this embodiment, when there is a parking regeneration demand for the range extender system and at the same time a power generation demand from the vehicle controller VCU (Vehicle Control Unit) is received, combining the two demands, in order to ensure the coordinated operation of regeneration and power generation simultaneously, considering that the required power for parking power generation is different and its power generation operating points will be different, the parking engine speed is adjusted according to the different goals in different stages of parking regeneration.

[0045] Among them, the parking regeneration stage can include an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage, and a sediment catalytic oxidation stage.

[0046] The adsorption stage (ADS stage, Aftertreatment Desoot System) included in the parking regeneration stage refers to the active regeneration process 13 that the driver needs to trigger manually when parking when the carbon loading in the DPF exceeds the threshold (usually ≥ 4 g / L). By raising the exhaust gas temperature to 550 - 650 °C, the carbon deposits are oxidized into CO2 emissions to achieve the self-cleaning of the DPF (Diesel Particulate Filter).

[0047] Specifically, when there is a parking regeneration demand for the range extender system and at the same time a power generation demand, obtain the parking power generation demand power corresponding to the adsorption stage, and determine the parking power generation demand speed corresponding to the adsorption stage according to the parking power generation demand power corresponding to the adsorption stage.

[0048] The low-temperature oxidation stage (LOF stage, Low Oxidation Filter) included in the parking regeneration stage adopts the method of reducing the throttle valve opening to increase the engine exhaust temperature to reach the light-off temperature of the DOC (Diesel Oxidation Catalyst) for oxidizing HC.

[0049] Specifically, when there is a parking regeneration demand for the range extender system and at the same time a power generation demand, obtain the parking power generation demand power corresponding to the low-temperature oxidation stage, and determine the parking power generation demand speed corresponding to the low-temperature oxidation stage according to the parking power generation demand power corresponding to the low-temperature oxidation stage.

[0050] The drying stage included in the parked vehicle regeneration phase is a pre-treatment link for regeneration. Its main function is to create suitable conditions for subsequent high-temperature combustion. In the drying stage, the throttle valve opening is reduced, post-injection is enabled, and the engine exhaust temperature is increased so that the DOC can efficiently oxidize HC.

[0051] Specifically, when the range extender system has a parked vehicle regeneration requirement and a power generation requirement at the same time, obtain the parked vehicle power generation requirement power corresponding to the drying stage, and determine the parked vehicle power generation requirement speed corresponding to the drying stage according to the parked vehicle power generation requirement power corresponding to the drying stage.

[0052] The regeneration phase (Regeneration Phase, Rgn phase) included in the parked vehicle regeneration phase is the core high-temperature combustion link. The soot accumulated in the DPF is oxidized and removed by actively raising the temperature. In the regeneration phase, the throttle valve opening is reduced, post-injection is enabled, and HC injection is increased to raise the engine exhaust temperature and bring the DPF temperature to around 600 °C so that the carbon deposits in the DPF can burn normally.

[0053] Specifically, when the range extender system has a parked vehicle regeneration requirement and a power generation requirement at the same time, obtain the parked vehicle power generation requirement power corresponding to the regeneration phase, and determine the parked vehicle power generation requirement speed corresponding to the regeneration phase according to the parked vehicle power generation requirement power corresponding to the regeneration phase.

[0054] The Combustion of Deposits (COD) stage included in the parked vehicle regeneration phase is the core link for high-temperature oxidation of soot. Complete combustion of carbon particles in the DPF is achieved by precisely controlling the temperature. In the COD stage, the normal throttle valve opening is restored, post-injection is turned off, HC injection is turned off, and the engine speed is adjusted to quickly reduce the temperature.

[0055] Specifically, when the range extender system has a parked vehicle regeneration requirement and a power generation requirement at the same time, obtain the parked vehicle power generation requirement power corresponding to the COD stage, and determine the parked vehicle power generation requirement speed corresponding to the COD stage according to the parked vehicle power generation requirement power corresponding to the COD stage.

[0056] On this basis, see Figure 2As shown, the required speed determined by querying the power-speed curve according to the power demand for parking power generation is determined as the required speed for parking regeneration corresponding to the parking regeneration stage. Specifically: the required speed obtained by querying the power-speed curve according to the power demand for parking power generation corresponding to the adsorption stage is determined as the required speed for parking power generation corresponding to the adsorption stage; the required speed obtained by querying the power-speed curve according to the power demand for parking power generation corresponding to the low-temperature oxidation stage is determined as the required speed for parking power generation corresponding to the low-temperature oxidation stage; the required speed obtained by querying the power-speed curve according to the power demand for parking power generation corresponding to the drying stage is determined as the required speed for parking power generation corresponding to the drying stage; the required speed obtained by querying the power-speed curve according to the power demand for parking power generation corresponding to the regeneration stage is determined as the required speed for parking power generation corresponding to the regeneration stage; the required speed obtained by querying the power-speed curve according to the power demand for parking power generation corresponding to the sediment catalytic oxidation stage is determined as the required speed for parking power generation corresponding to the sediment catalytic oxidation stage.

[0057] It can be known that the power-speed curve can be obtained by pre-calibration according to the parking regeneration control requirements, and this embodiment does not impose any restrictions on this.

[0058] S120. Determine the set speed of the generator based on the required speed for parking regeneration and the required speed for parking power generation corresponding to each parking regeneration stage, so as to determine the set torque of the engine based on the set speed of the generator, and control the engine to complete parking regeneration.

[0059] In this embodiment, continue to refer to Figure 2 As shown, the parking regeneration stage may include an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage, and a sediment catalytic oxidation stage. When the parking regeneration stage is in the adsorption stage, obtain the required speed for parking regeneration corresponding to the adsorption stage; when the parking regeneration stage is in the low-temperature oxidation stage, obtain the required speed for parking regeneration corresponding to the low-temperature oxidation stage; when the parking regeneration stage is in the drying stage, obtain the required speed for parking regeneration corresponding to the drying stage; when the parking regeneration stage is in the regeneration stage, obtain the required speed for parking regeneration corresponding to the regeneration stage; when the parking regeneration stage is in the sediment catalytic oxidation stage, obtain the required speed for parking regeneration corresponding to the sediment catalytic oxidation stage.

[0060] On the above basis, in order to ensure the realization of parking regeneration, the set speed cannot be lower than its set speed. Therefore, the larger value of the two is taken as the set speed of the generator, that is, the larger required speed among the required speed for parking regeneration and the required speed for parking power generation corresponding to each parking regeneration stage is determined as the set speed of the generator.

[0061] Specifically, continue to refer to Figure 2As shown, during the parking regeneration stage in the adsorption stage, the higher of the parking power generation demand speed and the parking regeneration demand speed corresponding to the adsorption stage is determined as the generator set speed of the generator; during the parking regeneration stage in the low-temperature oxidation stage, the higher of the parking power generation demand speed and the parking regeneration demand speed corresponding to the low-temperature oxidation stage is determined as the generator set speed of the generator; during the parking regeneration stage in the drying stage, the higher of the parking power generation demand speed and the parking regeneration demand speed corresponding to the drying stage is determined as the generator set speed of the generator; during the parking regeneration stage in the regeneration stage, the higher of the parking power generation demand speed and the parking regeneration demand speed corresponding to the regeneration stage is determined as the generator set speed of the generator; during the parking regeneration stage in the sediment catalytic oxidation stage, the higher of the parking power generation demand speed and the parking regeneration demand speed corresponding to the sediment catalytic oxidation stage is determined as the generator set speed of the generator.

[0062] Further, continue to refer to Figure 2 As shown, multiply the parking power generation demand power by 9550 and then divide by the generator set speed to obtain the engine set torque of the engine. The set torque of the engine needs to be calculated according to the adjusted speed and the demand power of the range extender to control the engine to complete parking regeneration.

[0063] In addition, it should be noted that continue to refer to Figure 2 As shown, during the parking regeneration stage in the sediment catalytic oxidation stage, that is, after the engine enters the sediment catalytic oxidation stage, at this time, it is necessary to quickly reduce the engine exhaust temperature, and it is not appropriate to apply a load to the engine anymore. The engine torque setting of the engine is controlled to be 0, and the engine control mode also switches from torque control in other stages to speed control mode.

[0064] The technical solution of the embodiment of the present invention, the parking engine speed control method is applied to a range-extended electric vehicle. The range-extended electric vehicle includes a range-extending system. The range-extending system includes an engine and a generator. The parking engine speed control method includes: when the range-extending system has a parking regeneration demand and at the same time has a power generation demand, obtain the parking power generation demand power corresponding to each parking regeneration stage, and determine the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power; determine the generator set speed of the generator based on the parking regeneration demand speed and the parking power generation demand speed corresponding to each parking regeneration stage, so as to determine the engine set torque of the engine based on the generator set speed and control the engine to complete parking regeneration. The embodiment of the present invention solves the problem that it is currently impossible to complete parking regeneration control by combining the requirements of parking regeneration and parking charging at the same time. When there are both parking regeneration and parking power generation demands at the same time, it can decide the operating point of the engine, ensure the simultaneous realization of the two demands, and can also quickly increase the exhaust temperature by increasing the engine load to achieve the purpose of reducing carbon deposits as soon as possible.

[0065] Based on the same inventive concept, Figure 3 FIG. is a schematic structural diagram of a parking engine speed control device provided by an embodiment of the present invention. The parking engine speed control device is applied to an extended-range vehicle, and the extended-range vehicle includes an extended-range system. The extended-range system includes an engine and a generator. As Figure 3 shown, the parking engine speed control device includes:

[0066] A parking power generation demand speed determination module 210, configured to execute when there is a parking regeneration demand and a power generation demand in the extended-range system at the same time, obtain the initial parking power generation demand power corresponding to each parking regeneration stage, and determine the parking power generation demand speed corresponding to the parking regeneration stage according to the initial parking power generation demand power;

[0067] A parking engine speed control module 220, configured to execute determining the generator set speed of the generator according to the parking regeneration demand speed and the parking power generation demand speed corresponding to each parking regeneration stage, so as to determine the engine set torque of the engine based on the generator set speed, and control the engine to complete parking regeneration.

[0068] Optionally, the parking regeneration stage includes an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage, and a sediment catalytic oxidation stage;

[0069] Determining the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power specifically includes:

[0070] Determining the parking power generation demand speeds corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage, and the sediment catalytic oxidation stage respectively according to the parking power generation demand powers corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage, and the sediment catalytic oxidation stage.

[0071] Optionally, determining the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power specifically includes:

[0072] The demand speed obtained by querying the power-speed curve according to the parking power generation demand power is determined as the parking power generation demand speed corresponding to the parking regeneration stage.

[0073] Optionally, determining the generator set speed of the generator according to the parking regeneration demand speed and the parking power generation demand speed corresponding to each parking regeneration stage specifically includes:

[0074] Determining the larger demand speed among the parking regeneration demand speed and the parking power generation demand speed corresponding to each parking regeneration stage as the generator set speed of the generator.

[0075] Optionally, the parking regeneration stage includes a sediment catalytic oxidation stage;

[0076] The parking engine speed control device further includes:

[0077] A torque control module, configured to, after the engine enters the sediment catalytic oxidation stage, control the engine torque of the engine to be set to 0.

[0078] Optionally, determine the engine set torque of the engine based on the generator set speed, specifically for:

[0079] Multiply the parking power generation demand power by 9550, and then divide it by the generator set speed to obtain the engine set torque of the engine.

[0080] The parking engine speed control device provided by the embodiments of the present invention can execute the parking engine speed control method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the parking engine speed control method.

[0081] Based on the same inventive concept, Figure 4 FIG. shows a schematic structural diagram of a range-extended electric vehicle 310 that can be used to implement the embodiments of the present invention. As Figure 4 shown, the range-extended electric vehicle 310 includes at least one processor 311, and a memory communicatively connected to the at least one processor 311, such as a read-only memory (ROM 312), a random access memory (RAM 313), etc. Among them, the memory stores a computer program executable by the at least one processor. The processor 311 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM 312) or the computer program loaded from the storage unit 318 into the random access memory (RAM 313). In the RAM 313, various programs and data required for the operation of the range-extended electric vehicle 310 can also be stored. The processor 311, the ROM 312, and the RAM 313 are connected to each other through a bus 314. The I / O (input / output) interface 315 is also connected to the bus 314.

[0082] Multiple components in the range-extended electric vehicle 310 are connected to the I / O interface 315, including: an input unit 316, such as a keyboard, a mouse, etc.; an output unit 317, such as various types of displays, speakers, etc.; a storage unit 318, such as a magnetic disk, an optical disc, etc.; and a communication unit 319, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 319 allows the range-extended electric vehicle 310 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0083] The processor 311 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 311 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 suitable processor, controller, microcontroller, etc. The processor 311 executes the various methods and processes described above, such as the parked engine speed control method.

[0084] In some embodiments, the parked engine speed control method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 318. In some embodiments, part or all of the computer program can be loaded and / or installed onto the range extender vehicle 310 via the ROM 312 and / or the communication unit 319. When the computer program is loaded into the RAM 313 and executed by the processor 311, one or more steps of the parked engine speed control method described above can be executed. Alternatively, in other embodiments, the processor 311 can be configured to execute the parked engine speed control method by any other suitable means (e.g., by means of firmware).

[0085] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGA), application specific integrated circuits (ASIC), application specific standard products (ASSP), systems on a chip (SOC), complex programmable logic devices (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: 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 the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0086] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer programs are executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer programs can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0087] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0088] To provide for interaction with a user, the systems and techniques described herein can be implemented on a range-extended vehicle that includes: 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 a trackball) by which the user can provide input to the range-extended vehicle. Other kinds of devices can also be used to provide for interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0089] The systems and techniques described herein can 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 having a graphical user interface or a web browser through which the user can interact with an implementation 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 can 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.

[0090] A computing system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The relationship between the client and the server is created by computer programs running on respective 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 a cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0091] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added or deleted. For example, the steps recited 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 no limitation is made herein.

[0092] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A parking engine speed control method, the parking engine speed control method is applied to an extended-range vehicle, the extended-range vehicle includes an extended-range system, the extended-range system includes an engine and a generator, and is characterized in that: The parking engine speed control method comprises: When the range-extended system has a parking regeneration requirement and a power generation requirement at the same time, obtaining a parking power generation requirement power corresponding to each parking regeneration stage, and determining a parking power generation requirement speed corresponding to the parking regeneration stage according to the parking power generation requirement power; The generator set speed of the generator is determined according to the parking regeneration requirement speed and the parking power generation requirement speed corresponding to each parking regeneration stage, so as to determine the engine set torque of the engine based on the generator set speed, and control the engine to complete parking regeneration.

2. The parking engine speed control method according to claim 1, characterized in that: The parking regeneration stage includes an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage and a deposit catalytic oxidation stage; Determining the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power includes: According to the parking power generation demand powers corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage and the deposit catalytic oxidation stage, the parking power generation demand speeds corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage and the deposit catalytic oxidation stage are determined respectively.

3. The parking engine speed control method according to claim 1, characterized in that: Determining the parking power generation demand speed corresponding to the parking regeneration stage according to the parking power generation demand power includes: The required speed obtained by querying the power speed curve according to the parking power generation required power is determined as the parking power generation required speed corresponding to the parking regeneration stage.

4. The parking engine speed control method according to claim 1, characterized in that: Determining the generator set speed of the generator according to the parking regeneration requirement speed and the parking power generation requirement speed corresponding to each parking regeneration stage includes: A larger required speed between the parking regeneration required speed and the parking power generation required speed corresponding to each of the parking regeneration stages is determined as a generator set speed of the generator.

5. The parking engine speed control method according to claim 1, characterized in that: The parking regeneration phase includes a deposit catalytic oxidation phase; The parking engine speed control method further includes: After the engine enters the deposit catalytic oxidation stage, the engine torque of the engine is controlled to be set to 0.

6. The parking engine speed control method according to claim 1, characterized in that: Determining the engine set torque of the engine based on the generator set speed includes: The parking power generation requirement is multiplied by 9550, and then divided by the generator set speed to obtain the engine set torque of the engine.

7. A parking engine speed control device, the parking engine speed control device is applied to an extended-range vehicle, the extended-range vehicle includes an extended-range system, the extended-range system includes an engine and a generator, and is characterized in that: The parking engine speed control device comprises: A parking power generation demand speed determination module is used to obtain the initial parking power generation demand power corresponding to each parking regeneration stage when the range extender system has a parking regeneration demand and a power generation demand at the same time, and determine the parking power generation demand speed corresponding to the parking regeneration stage according to the initial parking power generation demand power; The parking engine speed control module is used to determine the generator set speed of the generator according to the parking regeneration requirement speed and the parking power generation requirement speed corresponding to each parking regeneration stage, so as to determine the engine set torque of the engine based on the generator set speed, and control the engine to complete parking regeneration.

8. The parking engine speed control device according to claim 7, characterized in that: The parking regeneration stage includes an adsorption stage, a low-temperature oxidation stage, a drying stage, a regeneration stage and a deposit catalytic oxidation stage; Determining the parking power generation demand speed corresponding to the parking regeneration phase according to the parking power generation demand power is specifically used for: According to the parking power generation demand powers corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage and the deposit catalytic oxidation stage, the parking power generation demand speeds corresponding to the adsorption stage, the low-temperature oxidation stage, the drying stage, the regeneration stage and the deposit catalytic oxidation stage are determined respectively.

9. An extended-range vehicle, characterized in that: The extended-range vehicle comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the parking engine speed control method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the parking engine speed control method according to any one of claims 1 to 6 when executed.

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