Parking regeneration control method and device, extended-range automobile and storage medium

Abstract

The invention discloses a parking regeneration control method and device, an extended-range automobile and a storage medium. The parking regeneration control method is applied to the range-extending type automobile, the range-extending type automobile comprises a range-extending system, the range-extending system comprises an engine, a generator and a battery pack, and the parking regeneration control method of the range-extending system comprises the steps that when the range-extending system has the parking regeneration requirement and the power generation requirement, the engine is started; the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack and the initial parking power generation required power are obtained, and the generator set rotating speed of the generator is determined according to the current engine exhaust temperature and the initial parking power generation required power; and when the current battery SOC value is smaller than or equal to a set SOC threshold value, target parking power generation required power of the range extending system is determined according to the initial parking power generation required power and the set rotating speed of a generator, and engine set torque of an engine is determined according to the target parking power generation required power, so that the engine is controlled to complete parking regeneration based on the engine set torque.

Description

Technical Field

[0001] The present invention relates to the technical field of parking regeneration control, and particularly relates to a parking regeneration control method, device, range-extended electric vehicle, and 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 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 a range-extended electric vehicle. At the same time, according to the actual operating conditions of the vehicle, there may also be a situation where the range-extender system needs to charge during parking. These two situations have their own requirements for the engine. Currently, it is impossible to combine the requirements of both 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 parking regeneration control method, device, range-extended electric vehicle, and storage medium to solve the problem that it is currently impossible to simultaneously combine the requirements of parking regeneration and parking charging to complete parking regeneration control.

[0005] According to one aspect of the present invention, a parking regeneration control method is provided. The parking regeneration control method is applied to a range-extended electric vehicle, and the range-extended electric vehicle includes a range-extender system. The range-extender system includes an engine, a generator, and a battery pack. The range-extender system parking regeneration control method includes:

[0006] When the range-extender system has a parking regeneration requirement and at the same time has a power generation requirement, obtain the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation demand power, and determine the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power;

[0007] When the current battery SOC value is less than or equal to the set SOC threshold, determine the target parking power generation demand power of the range-extender system according to the initial parking power generation demand power and the generator set speed, and determine the engine set torque of the engine according to the target parking power generation demand power to control the engine to complete parking regeneration based on the engine set torque.

[0008] Optionally, determining the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power includes:

[0009] Determine the parking regeneration demand speed according to the current engine exhaust temperature, and determine the parking power generation demand speed according to the initial parking power generation demand power;

[0010] Determine the generator set speed of the generator according to the parking regeneration demand speed and the parking power generation demand speed.

[0011] Optionally, the parking regeneration control method of the range extender system further includes:

[0012] When the current battery SOC value is greater than the set SOC threshold, determine the target parking power generation demand power of the range extender system according to the initial parking power generation demand power.

[0013] Optionally, before determining the target parking power generation demand power of the range extender system according to the initial parking power generation demand power and the generator set speed, it further includes:

[0014] Determine the power generation power adjustment coefficient according to the current battery SOC value and the speed difference determined by the generator set speed and the parking power generation demand speed;

[0015] Determining the target parking power generation demand power of the range extender system according to the initial parking power generation demand power and the generator set speed includes:

[0016] Determine the first parking power generation demand power according to the initial parking power generation demand power and the power generation power adjustment coefficient, and determine the second parking power generation demand power according to the generator set speed;

[0017] Determine the target parking power generation demand power of the range extender system according to the first parking power generation demand power and the second parking power generation demand power.

[0018] Optionally, determining the second parking power generation demand power according to the generator set speed includes:

[0019] Determine the first power generation demand power according to the power generation demand power obtained by querying the first most economical power generation curve based on the generator set speed, and determine the second power generation demand power according to the power generation demand power obtained by querying the second most economical power generation curve based on the generator set speed;

[0020] Determine the second parking power generation demand power according to the first power generation demand power and the second power generation demand power.

[0021] Optionally, determining the first power generation demand power according to the power generation demand power obtained by querying the first most economical power generation curve based on the generator set speed includes:

[0022] Determine the first power generation demand power as the smaller power generation demand power between the initial parking power generation demand power and the power generation demand power obtained by querying the first most economical power generation curve based on the generator set speed.

[0023] Optionally, determining the engine set torque of the engine according to the target parked power generation demand power includes:

[0024] Multiplying the target parked power generation demand power by 9550, and then dividing by the generator set speed to obtain the engine set torque of the engine.

[0025] According to another aspect of the present invention, a parked regeneration control device is provided. The parked regeneration control device is applied to a range extender vehicle. The range extender vehicle includes a range extender system. The range extender system includes an engine, a generator, and a battery pack. The parked regeneration control device includes:

[0026] A generator set speed determination module, configured to execute when the range extender system has a parked regeneration demand and at the same time has a power generation demand, obtain the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parked power generation demand power, and determine the generator set speed of the generator according to the current engine exhaust temperature and the initial parked power generation demand power;

[0027] A parked regeneration control module, configured to execute when the current battery SOC value is less than or equal to the set SOC threshold, determine the target parked power generation demand power of the range extender system according to the initial parked power generation demand power and the generator set speed, and determine the engine set torque of the engine according to the target parked power generation demand power, so as to control the engine to complete parked regeneration based on the engine set torque.

[0028] According to another aspect of the present invention, a range extender vehicle is provided. The range extender vehicle includes:

[0029] At least one processor; and,

[0030] A memory communicatively connected to the at least one processor; wherein,

[0031] 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 parked regeneration control method of any embodiment of the present invention.

[0032] 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 parked regeneration control method of any embodiment of the present invention when executed.

[0033] In the technical solution of the embodiment of the present invention, the parking regeneration control method is applied to a range-extended electric vehicle. The range-extended electric vehicle includes a range-extending system, and the range-extending system includes an engine, a generator, and a battery pack. The range-extending system parking regeneration control method is a range extender control method that combines parking regeneration and parking power generation. That is, when the range-extending system has a parking regeneration requirement and at the same time has a power generation requirement, obtain the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation demand power, and determine the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power; when the current battery SOC value is less than or equal to the set SOC threshold, determine the target parking power generation demand power of the range-extending system according to the initial parking power generation demand power and the generator set speed, on the one hand, reduce the energy consumed by parking regeneration, on the other hand, meet the power generation demand of the actual operating conditions of the whole vehicle, and make the range-extending system work on the most economical curve as much as possible. Further, determine the engine set torque of the engine according to the target parking power generation demand power, so as to control the engine to complete parking regeneration based on the engine set torque, thereby realizing the efficient parking regeneration control of the range-extended electric vehicle.

[0034] 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

[0035] 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 drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 is a flowchart of a parking regeneration control method provided according to an embodiment of the present invention;

[0037] Figure 2 is a schematic diagram of the principle framework for determining the engine set speed provided according to an embodiment of the present invention;

[0038] Figure 3 is a structural diagram of a parking regeneration control method provided according to an embodiment of the present invention;

[0039] Figure 4 is a structural diagram of a parking regeneration control method provided according to an embodiment of the present invention;

[0040] Figure 5 is a structural diagram of a parking regeneration control method provided according to an embodiment of the present invention;

[0041] Figure 6 It is a schematic structural diagram of a parking regeneration control device provided according to an embodiment of the present invention;

[0042] Figure 7 It is a schematic structural diagram of a range-extended electric vehicle for implementing the parking regeneration control method of the embodiment of the present invention. Specific embodiments

[0043] In order 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 with reference to 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.

[0044] 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 do not necessarily need to be 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 "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes 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.

[0045] Figure 1 This embodiment provides a flowchart of a parking regeneration control method. This embodiment is applicable to the situation where due to emission upgrade requirements, the engine needs to perform parking regeneration while the range extender system needs to perform parking charging for parking regeneration control. This parking regeneration control method can be executed by a parking regeneration control device, which can be implemented in the form of hardware and / or software, and the parking regeneration control device can be configured in range-extended electric vehicles or range-extended hybrid electric vehicles, such as

[0046] The parking regeneration control method provided by the embodiment of the present invention is applied to a range-extended electric vehicle, and the range-extended electric vehicle includes a range extender system. The range extender system includes an engine, a generator, and a battery pack, as Figure 1 shown, and the parking regeneration control method includes:

[0047] S110. When the range extender system has a parking regeneration demand and a power generation demand simultaneously, obtain the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation demand power, and determine the set speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power.

[0048] 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 uses speed control, and the motor uses torque control. The range extender controller RCU (Range Extender Control Unit) controls the engine controller ECU (Engine Control Unit) to work according to the regeneration demand speed. At this time, the power generation torque of the motor controller MCU (Motor Control Unit) is set to 0.

[0049] In this embodiment, when the range extender system has a parking regeneration demand and receives a power generation demand from the vehicle control unit VCU (Vehicle Control Unit) at the same time, combining the two demands, in order to ensure the coordinated operation of regeneration and power generation simultaneously, the engine uses torque control and the motor uses speed control, so as to achieve parking regeneration control. Specifically: in order to ensure the parking regeneration demand of the engine, the engine speed should be as high as possible. Refer to Figure 2 As shown, the set speed of the generator at this time is the larger value of the parking regeneration demand speed and the parking power generation demand speed. Among them, the parking regeneration demand speed can be determined according to the current engine exhaust temperature, and the parking power generation demand speed can be determined according to the initial parking power generation demand power.

[0050] Among them, the current engine exhaust temperature of the engine is obtained by real-time measurement through the engine controller ECU when the range extender system has a parking regeneration demand, or can also be obtained by real-time measurement relying on the exhaust temperature sensor. This embodiment does not make any restrictions on this.

[0051] The current battery SOC value of the battery pack is obtained by measurement through a measuring device when receiving the power generation demand from the vehicle control unit VCU (Vehicle Control Unit), or can also be indirectly estimated using other parameters. This embodiment does not make any restrictions on this.

[0052] The initial parking power generation demand power is the current demand power determined based on the power generation demand of the vehicle control unit VCU, and it can be determined by the vehicle control unit VCU according to the power generation demand.

[0053] Continue to refer to Figure 2As shown, the parking regeneration required speed is obtained by querying the exhaust temperature - speed curve according to the current engine exhaust temperature, and the parking power generation required speed is obtained by querying the most economical power - speed power generation curve according to the initial parking power generation required power. Further, the larger value of the parking regeneration required speed and the parking power generation required speed is selected as the set speed of the generator.

[0054] It is known that both the exhaust temperature - speed curve and the most economical power - speed power generation curve can be obtained by pre - calibration according to the parking regeneration control requirements, and this embodiment does not make any restrictions on this.

[0055] S120. When the current battery SOC value is less than or equal to the set SOC threshold, determine the target parking power generation required power of the range - extender system according to the initial parking power generation required power and the set speed of the generator, and determine the set torque of the engine according to the target parking power generation required power, so as to control the engine to complete parking regeneration based on the set torque of the engine.

[0056] To ensure that the range - extender system operates in a more economical region, the initial parking power generation required power is appropriately adjusted when determining the target parking power generation required power. Refer to Figure 3 As shown, when the current battery SOC value is relatively high, that is, when the current battery SOC value is greater than the set SOC threshold, in order to prevent over - charging of the battery pack, at this time, the economic requirement is abandoned, and power generation is strictly carried out according to the initial parking power generation required power. That is, determine the target parking power generation required power of the range - extender system according to the initial parking power generation required power, and then multiply the target parking power generation required power by 9550 and divide it by the set speed of the generator to obtain the set torque of the engine.

[0057] Among them, the set SOC threshold can be obtained by pre - calibration according to the parking regeneration control requirements, and this embodiment does not make any restrictions on this.

[0058] In this embodiment, when the current battery SOC value is relatively low, that is, when the current battery SOC value is less than or equal to the set SOC threshold, the initial parking power generation required power is adjusted by comprehensively considering the current battery SOC value and the speed difference between the set speed of the generator and the parking power generation required speed, and try to ensure that it is on the most economical power generation curve.

[0059] Refer to Figure 4As shown, before determining the target parking power generation demand of the range extender system based on the initial parking power generation demand power and the set generator speed, a power generation power adjustment coefficient is queried from the SOC-speed difference curve determined according to the current battery SOC value, the set generator speed, and the speed difference between the parking power generation demand speed. When the speed difference of the parking power generation demand speed is less than or equal to 0, it is 1. When the speed difference is greater than 0, it is greater than 1, and the greater the speed difference, the greater the power generation power adjustment coefficient. The smaller the current battery SOC value, the greater the power generation power adjustment coefficient. When approaching the set SOC threshold, the power generation power adjustment coefficient is 1. After that, the initial parking power generation demand power is adjusted according to the power generation power adjustment coefficient, and then the set engine torque of the engine is determined.

[0060] It can be known that the SOC-speed difference curve can be obtained by pre-calibration according to the parking regeneration control requirements. This embodiment does not impose any restrictions on this.

[0061] On this basis, continue to refer to Figure 4 As shown, when the current battery SOC value is less than or equal to the set SOC threshold, the first parking power generation demand power is obtained by multiplying the initial parking power generation demand power by the power generation power adjustment coefficient, and the second parking power generation demand power is determined by querying the most economical power generation curve according to the set generator speed. Then, the smaller of the first parking power generation demand power and the second parking power generation demand power is determined as the target parking power generation demand of the range extender system.

[0062] It can be known that the determination of the most economical power generation curve needs to combine the engine universal characteristic curve (BSFC) and the hybrid system control strategy. This embodiment does not impose any restrictions on the most economical power generation curve involved.

[0063] In another embodiment, considering that there may be a situation where multiple power generation demand powers correspond to the same power generation demand speed in the most economical power generation curve of the range extender system, there may be a non-monotonic situation in the index array when inverting the power generation demand power according to the power generation demand speed. At this time, the calculation of the speed-power most economical power generation curve can be adjusted. Specifically: refer to Figure 5 As shown, when the current battery SOC value is less than or equal to the set SOC threshold, the first parking power generation demand power is determined according to the initial parking power generation demand power and the power generation power adjustment coefficient, and the first power generation demand power is determined according to the power generation demand power obtained by querying the first most economical power generation curve according to the set generator speed, and the second power generation demand power is determined according to the power generation demand power obtained by querying the second most economical power generation curve according to the set generator speed. Further, the larger of the first power generation demand power and the second power generation demand power is determined as the second parking power generation demand power.

[0064] Exemplarily, the first most economical power generation curve can be the maximum most economical power generation curve of rotational speed and power, and the second most economical power generation curve can be the minimum most economical power generation curve of rotational speed and power. Both the first most economical power generation curve and the second most economical power generation curve can be obtained by calibrating the corresponding power at each rotational speed. It can be known that if there is only one most economical power generation point corresponding to a certain rotational speed, then the maximum most economical power generation point and the minimum most economical power generation point corresponding to the current rotational speed are the same.

[0065] Among them, continue to refer to Figure 5 As shown, the smaller of the initial parking power generation demand power and the power generation demand power obtained by querying the first most economical power generation curve based on the set rotational speed of the generator is determined as the first power generation demand power.

[0066] Continue to refer to Figure 5 As shown, on the above basis, the smaller of the first parking power generation demand power and the second parking power generation demand power is determined as the target parking power generation demand power of the range extender system. Further, the target parking power generation demand power is multiplied by 9550 and then divided by the set rotational speed of the generator to obtain the set engine torque of the engine.

[0067] The technical solution of the embodiment of the present invention, the parking regeneration control method is applied to a range-extended electric vehicle. The range-extended electric vehicle includes a range extender system. The range extender system includes an engine, a generator, and a battery pack. The range extender system parking regeneration control method includes: when the range extender system has a parking regeneration demand and at the same time has a power generation demand, obtaining the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation demand power, and determining the set rotational speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power; when the current battery SOC value is less than or equal to the set SOC threshold, determining the target parking power generation demand power of the range extender system according to the initial parking power generation demand power and the set rotational speed of the generator, and determining the set engine torque of the engine according to the target parking power generation demand power, so as to control the engine to complete parking regeneration based on the set engine torque. 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, realizes efficient parking regeneration control when parking regeneration and parking power generation are combined, and ensures that the range-extended electric vehicle achieves the best emission performance.

[0068] Based on the same inventive concept, Figure 6 It is a schematic structural diagram of a parking regeneration control device provided by an embodiment of the present invention. The parking regeneration control device is applied to a range-extended electric vehicle. The range-extended electric vehicle includes a range extender system. The range extender system includes an engine, a generator, and a battery pack. As Figure 6 shown, the parking regeneration control device includes:

[0069] The generator set speed determination module 210 is configured to, when there is a parking regeneration demand and a power generation demand in the range extender system simultaneously, obtain the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation demand power, and determine the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power;

[0070] The parking regeneration control module 220 is configured to, when the current battery SOC value is less than or equal to the set SOC threshold, determine the target parking power generation demand power of the range extender system according to the initial parking power generation demand power and the generator set speed, and determine the engine set torque of the engine according to the target parking power generation demand power, so as to control the engine to complete parking regeneration based on the engine set torque.

[0071] Optionally, determining the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation demand power is specifically configured to:

[0072] Determine the parking regeneration demand speed according to the current engine exhaust temperature, and determine the parking power generation demand speed according to the initial parking power generation demand power;

[0073] Determine the generator set speed of the generator according to the parking regeneration demand speed and the parking power generation demand speed.

[0074] Optionally, the range extender system parking regeneration control device further includes:

[0075] The target parking power generation demand power determination module is configured to, when the current battery SOC value is greater than the set SOC threshold, determine the target parking power generation demand power of the range extender system according to the initial parking power generation demand power.

[0076] Optionally, the range extender system parking regeneration control device further includes:

[0077] The power generation power adjustment coefficient determination module is configured to determine the power generation power adjustment coefficient according to the current battery SOC value and the speed difference determined by the generator set speed and the parking power generation demand speed;

[0078] Determining the target parking power generation demand power of the range extender system according to the initial parking power generation demand power and the generator set speed is specifically configured to:

[0079] Determine the first parking power generation demand power according to the initial parking power generation demand power and the power generation power adjustment coefficient, and determine the second parking power generation demand power according to the generator set speed;

[0080] Determine the target parking power generation demand power of the range extender system according to the first parking power generation demand power and the second parking power generation demand power.

[0081] Optionally, determine the second parking power generation demand according to the set speed of the generator, specifically for:

[0082] Determine the first power generation demand according to the power generation demand obtained by querying the first most economical power generation curve based on the set speed of the generator, and determine the second power generation demand according to the power generation demand obtained by querying the second most economical power generation curve based on the set speed of the generator;

[0083] Determine the second parking power generation demand according to the first power generation demand and the second power generation demand.

[0084] Optionally, determine the first power generation demand according to the power generation demand obtained by querying the first most economical power generation curve based on the set speed of the generator, specifically for:

[0085] Determine the smaller power generation demand between the initial parking power generation demand and the power generation demand obtained by querying the first most economical power generation curve based on the set speed of the generator as the first power generation demand.

[0086] Optionally, determine the set torque of the engine according to the target parking power generation demand, specifically for:

[0087] Multiply the target parking power generation demand by 9550, and then divide by the set speed of the generator to obtain the set torque of the engine.

[0088] The parking regeneration control device provided by the embodiments of the present invention can execute the parking regeneration control method provided by any embodiment of the present invention, and has corresponding function modules and beneficial effects for executing the parking regeneration control method.

[0089] Based on the same inventive concept, Figure 7 The structural schematic diagram of the range extender vehicle 310 that can be used to implement the embodiments of the present invention is shown. As Figure 7 shown, the range extender vehicle 310 includes at least one processor 311, and a memory communicatively connected to 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 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 extender 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.

[0090] Multiple components in the range-extended 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 vehicle 310 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0091] 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 parking regeneration control method.

[0092] In some embodiments, the parking regeneration control method can be implemented as a computer program, which is tangibly contained 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-extended 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 parking regeneration control method described above can be executed. Alternatively, in other embodiments, the processor 311 can be configured to execute the parking regeneration control method in any other suitable manner (e.g., by means of firmware).

[0093] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special or general 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.

[0094] A computer program for implementing the method 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 the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer program can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine, or entirely on the remote machine or server.

[0095] 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.

[0096] In order to provide interaction with a user, the systems and techniques described herein can be implemented on a range-extended vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the range-extended vehicle. Other kinds of devices can also be used to provide 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, speech input, or tactile input).

[0097] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0098] A computing system can include a client and a server. The client and the server are generally far from each other and typically interact through a communication network. The client-server relationship is created by computer programs running on respective computers and having a client-server relationship with each other. The server can 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, solving the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0099] It should be understood that various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and this is not limited herein.

[0100] 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 principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A parking regeneration control method, the parking regeneration 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, a generator and a battery pack, characterized in that: The extended range system parking regeneration control method comprises: When the range extender system has a parking regeneration requirement and a power generation requirement at the same time, the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation requirement power are obtained, and the generator set speed of the generator is determined according to the current engine exhaust temperature and the initial parking power generation requirement power; When the current battery SOC value is less than or equal to a set SOC threshold, the target parking power generation requirement power of the range extender system is determined according to the initial parking power generation requirement power and the set generator speed, and the engine set torque of the engine is determined according to the target parking power generation requirement power, so as to control the engine to complete parking regeneration based on the engine set torque.

2. The parking regeneration control method according to claim 1, characterized in that: Determining the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation requirement power includes: determining a parking regeneration required speed according to the current engine exhaust temperature, and determining a parking power generation required speed according to the initial parking power generation required power; A generator set speed of the generator is determined according to the parking regeneration required speed and the parking power generation required speed.

3. The parking regeneration control method according to claim 1, characterized in that: The extended range system parking regeneration control method further includes: When the current battery SOC value is greater than a set SOC threshold, the target parking power generation requirement of the range extender system is determined according to the initial parking power generation requirement.

4. The parking regeneration control method according to claim 1, characterized in that: Before determining the target parking power generation requirement of the range extender system according to the initial parking power generation requirement and the generator set speed, the method further includes: Determine the power generation adjustment coefficient according to the speed difference between the current battery SOC value and the generator set speed and the parking power generation demand speed; Determining the target parking power generation requirement of the range extender system according to the initial parking power generation requirement and the set speed of the generator includes: Determining a first parking power generation requirement according to the initial parking power generation requirement and the power generation adjustment coefficient, and determining a second parking power generation requirement according to the set speed of the generator; The target parking power generation requirement of the range extender system is determined according to the first parking power generation requirement and the second parking power generation requirement.

5. The parking regeneration control method according to claim 4, characterized in that: Determining a second parking power generation requirement according to the generator set speed includes: Determine the first power generation demand power by querying the first most economical power generation curve according to the set speed of the generator, and determine the second power generation demand power by querying the second most economical power generation curve according to the set speed of the generator; A second parking power generation requirement is determined according to the first power generation requirement and the second power generation requirement.

6. The parking regeneration control method according to claim 5, characterized in that: Determining the first power generation demand power by querying the first most economical power generation curve according to the set speed of the generator comprises: The smaller of the initial parking power demand and the power demand obtained by querying the first most economical power generation curve based on the set speed of the generator is determined as the first power demand.

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

8. A parking regeneration control device, the parking regeneration 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, a generator and a battery pack, characterized in that: The parking regeneration control device comprises: a generator set speed determination module, used to obtain the current engine exhaust temperature of the engine, the current battery SOC value of the battery pack, and the initial parking power generation requirement when the range extender system has a parking regeneration requirement and a power generation requirement at the same time, and determine the generator set speed of the generator according to the current engine exhaust temperature and the initial parking power generation requirement; The parking regeneration control module is used to determine the target parking power generation requirement of the range extender system according to the initial parking power generation requirement and the generator set speed when the current battery SOC value is less than or equal to the set SOC threshold, and determine the engine set torque of the engine according to the target parking power generation requirement, so as to control the engine to complete the parking regeneration based on the engine set torque.

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 regeneration control method according to any one of claims 1 to 7.

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 regeneration control method according to any one of claims 1 to 7 when executed.

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