Control Method, Device, Equipment and Storage Medium for Reducing Fuel Consumption of Range-Extended Vehicles

Abstract

The present application provides a control method, device, equipment and storage medium for reducing fuel consumption of extended-range vehicles. The method includes: after determining that the vehicle enters a stable operating condition, recording a first time, and obtaining in real time the real-time power consumption within a first preset time period from the first time; calling a range-extended strategy calibration database, the range-extended strategy calibration database including: multiple groups of power consumption ranges and power generation powers corresponding to each group of the power consumption ranges; traversing the range-extended strategy calibration database, confirming the power consumption range corresponding to the real-time power consumption, and obtaining a first power generation power corresponding to the power consumption range; using the first power generation power to drive the range extender to generate power, maintaining the remaining battery power greater than or equal to a first preset threshold; compared with the existing method, the range extender's power generation power can be matched to the battery power consumption, so that the range extender operates in a high-efficiency range, thereby effectively reducing the vehicle's fuel consumption.

Description

Technical Field

[0001] The present application relates to the field of automotive thermal management technology, and in particular to a control method, device, equipment, and storage medium for reducing fuel consumption of extended-range vehicles. Background Art

[0002] With the popularity of hybrid vehicles, the usage scenarios of vehicles are becoming more and more diverse. Extended-range hybrid vehicles have been criticized by the market for consuming too much fuel. Existing extended-range vehicles consume mainly electricity when in use. When the battery power is consumed to the minimum power, oil is used. At this time, the battery is charged until the battery is full or charged to a certain range. Oil is no longer used and the battery is used. However, when charging the battery, on the one hand, oil is consumed to charge the battery, and on the other hand, fuel is also consumed to ensure the normal driving of the car. Therefore, the fuel consumption of the car has not been effectively reduced. Summary of the Invention

[0003] The purpose of this application is to address the above problems and provide a control method, device, equipment and storage medium for reducing the fuel consumption of extended-range vehicles.

[0004] First aspect:

[0005] The present application provides a control method for reducing fuel consumption of a range-extended vehicle, comprising:

[0006] After determining that the vehicle has entered a stable operating condition, the first time is recorded, and real-time power consumption within a first preset time period from the first time is obtained in real time;

[0007] calling a range-extending strategy calibration database, wherein the range-extending strategy calibration database includes: a plurality of power consumption ranges and a power generation power corresponding to each power consumption range;

[0008] Traversing the range-extending strategy calibration database, confirming the power consumption range corresponding to the real-time power consumption, and obtaining a first generated power corresponding to the power consumption range;

[0009] The range extender is driven to generate electricity with the first generated power, so as to maintain the remaining battery power greater than or equal to a first preset threshold.

[0010] According to the technical solutions provided in certain embodiments of the present application, the step of determining that the vehicle has entered a stable operating condition further includes:

[0011] Obtaining the vehicle speed at intervals of a second preset time length to obtain a vehicle speed set; the vehicle speed set includes: the time when the vehicle speed is obtained and the vehicle speed corresponding to the time;

[0012] Traversing the vehicle speed set, sequentially calculating the vehicle speed increments between two adjacent moments, to obtain a vehicle speed increment set; the vehicle speed increment set includes: a plurality of time intervals and the vehicle speed increments corresponding to the time intervals;

[0013] Calculating a vehicle speed change ratio based on the vehicle speed set and the vehicle speed increment set to obtain a vehicle speed change ratio set;

[0014] The vehicle speed change ratio set is traversed, and when it is determined that the absolute value of the difference between two adjacent vehicle speed change ratios within a second preset time period before the first time is less than the first preset threshold, it is determined that the vehicle enters a stable operating condition.

[0015] According to the technical solutions provided in certain embodiments of the present application, the method for pre-reducing fuel consumption of an extended-range vehicle further includes the following steps:

[0016] After determining that the vehicle has left the stable operating condition, obtaining the calibrated power consumption of the vehicle;

[0017] Traversing the range-extending strategy calibration database, confirming the power consumption range corresponding to the calibrated power consumption, and obtaining a second generated power corresponding to the power consumption range;

[0018] The range extender is driven to generate electricity with the second generated power, so as to maintain the remaining battery power greater than or equal to a first preset threshold.

[0019] According to the technical solutions provided in certain embodiments of the present application, obtaining the calibrated power consumption of a vehicle includes the following steps:

[0020] Acquire a real-time characteristic parameter sequence, the real-time characteristic parameter sequence at least including: current road conditions and power consumption per 100 kilometers; the road conditions at least including: congestion or non-congestion;

[0021] Calling a power consumption calibration database, wherein the power consumption calibration database includes: multiple groups of characteristic parameter sequences and calibrated power consumption corresponding to each group of the characteristic parameter sequences;

[0022] The power consumption calibration database is traversed to confirm a characteristic parameter sequence corresponding to the real-time characteristic parameter sequence, and then the calibrated power consumption corresponding to the characteristic parameter sequence is obtained.

[0023] According to the technical solutions provided in certain embodiments of the present application, obtaining the calibrated power consumption of the vehicle includes the following steps:

[0024] In response to a driving destination request, obtaining a driving route, the driving route including a plurality of driving roads;

[0025] Obtaining a real-time characteristic parameter sequence for each section of the driving road, traversing the power consumption calibration database, and after confirming the characteristic parameter sequence corresponding to the real-time characteristic parameter sequence for each section of the driving road, obtaining a calibrated power consumption corresponding to the characteristic parameter sequence;

[0026] The calibrated power consumption of each section of driving road is used to construct a calibrated power consumption set.

[0027] According to the technical solutions provided in certain embodiments of the present application, after constructing the calibrated power consumption set, the following steps are further included:

[0028] Traversing the calibrated power consumption set, querying the range-extended strategy calibration database for a third generated power corresponding to each power consumption value, and obtaining a third generated power set;

[0029] The range extender is driven to generate electricity using the third generated power set.

[0030] According to the technical solutions provided in certain embodiments of the present application, after determining that the vehicle has left the stable operating condition, the step of determining whether the vehicle has entered the stable operating condition is continued.

[0031] Second aspect: This application also provides a control device for reducing fuel consumption of an extended-range vehicle, comprising:

[0032] a determination module configured to determine that the vehicle enters a stable operating condition, record a first time, and obtain in real time real-time power consumption within a first preset time period starting from the first time;

[0033] A calling module configured to call a range-extending strategy calibration database, wherein the range-extending strategy calibration database includes: a plurality of power consumption ranges and a power generation power corresponding to each power consumption range;

[0034] a query module configured to traverse the range-extending strategy calibration database, confirm the power consumption range corresponding to the real-time power consumption, and obtain a first generated power corresponding to the power consumption range;

[0035] A driving module is configured to drive the range extender to generate electricity with the first generated power, so as to maintain the remaining battery power greater than or equal to a first preset threshold.

[0036] The third aspect:

[0037] The present application also provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor;

[0038] When the computer program is executed by the processor, the steps of the control method for reducing fuel consumption of an extended-range vehicle as described above are implemented.

[0039] Fourth aspect:

[0040] The present application also provides a computer-readable storage medium, comprising: a control program for reducing the fuel consumption of an extended-range vehicle is stored on the computer-readable storage medium, and when the control program for reducing the fuel consumption of an extended-range vehicle is executed by a processor, the steps of the method for reducing the fuel consumption of an extended-range vehicle as described above are implemented.

[0041] Compared with the prior art, the present application has the following beneficial effects: the present application determines the vehicle operating conditions, obtains real-time power consumption after determining that the vehicle has entered a stable operating condition, and obtains the range extender power generation power corresponding to the real-time power consumption range based on the real-time power consumption range, thereby driving the range extender to generate electricity. When the battery of the vehicle is reduced to about 25%, the range extender can generate electricity to charge the battery according to the power required by the battery during this stable operating condition, so that the power consumed by the battery is approximately equal to the power charged by the range extender, and the battery power can always be maintained above 25%. That is, the range extender will generate as much power to charge the battery as the battery consumes, and the range extender does not need to generate additional power, as long as the power generated by the range extender is enough for the battery to use. In the existing extended-range vehicle, after the battery power is used up to 25%, it will first charge the battery until the battery is fully charged or charged to about 80%. Compared with the existing ones, the range extender will generate as much power as the battery uses, without the need for additional power generation, so it can effectively reduce the fuel consumption of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a flow chart of a control method for reducing fuel consumption of an extended-range vehicle provided in Example 1 of the present application;

[0043] Figure 2 This is a flow chart of a control system for reducing fuel consumption of an extended-range vehicle provided in Example 2 of the present application;

[0044] Figure 3 A schematic diagram of the structure of the server provided in Example 4 of the present application. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0046] Example 1

[0047] Please refer to Figure 1The control method for reducing fuel consumption of an extended-range vehicle provided in this embodiment includes:

[0048] S1. After determining that the vehicle enters a stable operating condition, record a first time and obtain real-time power consumption within a first preset time period from the first time;

[0049] S2. Calling a range-extending strategy calibration database, wherein the range-extending strategy calibration database includes: a plurality of power consumption ranges and a power generation power corresponding to each power consumption range;

[0050] S3. After traversing the range-extending strategy calibration database and confirming the power consumption range corresponding to the real-time power consumption, obtain a first generated power corresponding to the power consumption range;

[0051] S4. Using the first generated power, drive the range extender to generate electricity, and maintain the remaining battery power greater than or equal to a first preset threshold.

[0052] Specifically, in this embodiment, S1 first determines whether the current vehicle has entered a stable operating condition. Assume that the current vehicle speed is recorded every ten minutes from 8:00 a.m. to 9:10 a.m. to obtain a vehicle speed set. A specific example is shown in Table 1:

[0053] Table 1: Vehicle speed collection

[0054]

[0055]

[0056] S102: traverse the vehicle speed set and calculate the vehicle speed increment between two adjacent moments. The vehicle speed increment = the vehicle speed at the next moment - the vehicle speed at the previous moment adjacent to the vehicle speed at the next moment. After the calculation, the corresponding vehicle speed increment in each time period can be obtained. Specifically, the vehicle speed increment set shown in Table 2 can be formed:

[0057] Table 2: Vehicle speed increment set

[0058] Section n Corresponding speed increment First segment (8:00-8:10) 5 Second segment (8:10-8:20) 5 The third segment (8:20-8:30) 5 Fourth segment (8:30-8:40) 5 Fifth segment (8:40-8:50) 10 Sixth Session (8:50-9:00) 10 Segment 7 (9:00-9:10) 5

[0059] S103. Traverse the vehicle speed set (Table 1) and the vehicle speed increment set (Table 2) to calculate a vehicle speed change ratio, where the vehicle speed change ratio = (vehicle speed after change - vehicle speed before change) / vehicle speed before change, to obtain a vehicle speed change ratio set. The vehicle speed change ratio set is shown in Table 3:

[0060] Table 3: Vehicle speed change ratio set

[0061]

[0062]

[0063] S104. Traverse the vehicle speed change ratio set. Assuming the first time is 8:30, it is necessary to determine the absolute value of the difference between two adjacent vehicle speed change ratios within 30 minutes before 8:30. If the absolute value of the difference is less than a second preset threshold, it can be determined that the current vehicle has entered a stable operating condition. Before 8:30, assume that the second preset threshold is 20%. The value of the second preset threshold is not fixed and can be determined according to actual conditions. In this real-time example, for detailed description, the second preset threshold is set to 20%. The absolute value of the difference between the vehicle speed change ratios of the first and second segments is 20%-25%=5%, and the absolute value of the difference between the vehicle speed change ratios of the second and third segments is 16.7%-20%=3.3%. According to the calculation results, within the 30 minutes before 8:30, the absolute value of the difference between two adjacent vehicle speed change ratios is less than the second preset threshold of 20%. At this time, it can be determined that the current vehicle has entered a stable operating condition.

[0064] S105: After determining that the current vehicle has entered a stable operating condition, it is necessary to record the first time and obtain the real-time power consumption of the battery within 40 minutes after 8:30 in real time; S2: After obtaining the real-time power consumption, it is necessary to retrieve the extended-range strategy calibration database. After the extended-range strategy calibration database is retrieved; S3: It is necessary to traverse the extended-range strategy calibration database to confirm the power consumption range corresponding to the real-time power consumption, so as to obtain the first generated power corresponding to the real-time power consumption. A specific example of the extended-range strategy calibration database can be shown in Table 4:

[0065] Table 4 Range-extended strategy calibration database

[0066] Serial number Power consumption range C% Power generation P (KW) 1 10-30 10 2 30-50 20 3 50-70 30 4 70-90 40 5 90-100 50

[0067] Assume that after 8:30, the real-time power consumption obtained by the car during driving is 25%. At this time, it is necessary to traverse the range-extending strategy calibration database to find the power consumption range where the real-time power consumption is 25%, that is, 10%-30%. Then, the corresponding power generation power of the range extender can be matched to the real-time power consumption of 25%, which is recorded as the first power generation power.

[0068] S4. Using the first generated power (10 kW) to drive the range extender to generate electricity, thereby maintaining the remaining battery charge greater than or equal to a first preset threshold. Assume that the first preset threshold is 25%, that is, the first preset threshold is the minimum battery charge required for vehicle travel.

[0069] When a range-extended vehicle is driving, it will first use the battery. When the battery power is consumed to 25%, it is necessary to obtain the real-time power consumption of the vehicle during driving and match it with the first power generation power of the range extender based on the real-time power consumption. In this way, the range extender can generate as much electricity as the vehicle needs when driving, so that the battery power is always greater than or equal to 25%. The range extender does not need to generate more electricity because it consumes fuel in the process of generating electricity, so it can effectively reduce fuel consumption.

[0070] S5. After determining that the vehicle has left the stable operating condition, it is necessary to obtain the vehicle's calibrated power consumption based on the road the vehicle is currently traveling on, which may be a congested road or a non-congested road, and the vehicle's previous power consumption per 100 kilometers when traveling on this type of road. The calibrated power consumption is the battery power consumed when the vehicle passed this type of road in a certain period of time before. S6. After obtaining the calibrated power consumption, it is necessary to find the power consumption range corresponding to the calibrated power consumption in the range extender strategy calibration database, so as to know the second power generation power corresponding to the calibrated power consumption. Assuming that the battery power consumed when traveling on this section of road before was 60%, the corresponding second power generation power is 30KW. That is, at this time, the range extender needs to generate electricity according to the second power generation power to maintain the battery power greater than or equal to 25%.

[0071] Obtaining the vehicle's rated power consumption includes the following steps:

[0072] S501: Acquire a real-time characteristic parameter sequence, wherein the real-time characteristic parameter sequence includes at least: current road condition and power consumption per 100 kilometers; the road condition includes at least: congested or non-congested;

[0073] S502: calling a power consumption calibration database, wherein the power consumption calibration database includes: multiple sets of characteristic parameter sequences and calibrated power consumption corresponding to each set of the characteristic parameter sequences;

[0074] S503 , traversing the power consumption calibration database, confirming a characteristic parameter sequence corresponding to the real-time characteristic parameter sequence, and obtaining a calibrated power consumption corresponding to the characteristic parameter sequence.

[0075] Specifically, in this embodiment, the method for obtaining the calibrated power consumption of the vehicle may further include the following steps:

[0076] S501-1. Based on the current road conditions, which may be congested or non-congested, and the vehicle's past power consumption per 100 kilometers on the current road, a power consumption calibration database is called to obtain the calibrated power consumption corresponding to each road condition. The power consumption calibration database is shown in Table 5 below:

[0077] Table 5: Power consumption calibration database

[0078] Current road conditions of the vehicle Rated power consumption Congested road sections 35 Non-congested road sections 20

[0079] After determining the calibrated power consumption, S502 - 1 traverses the range extension strategy calibration database to obtain a corresponding power consumption range and a corresponding power generation power of the range extender.

[0080] The step of obtaining the calibrated power consumption of the vehicle further comprises the following steps:

[0081] S503-1. In response to a driving destination request, obtain a driving route, where the driving route includes multiple driving roads.

[0082] S504-1. Obtain a real-time characteristic parameter sequence for each section of the driving road, traverse the power consumption calibration database, identify the characteristic parameter sequence corresponding to the real-time characteristic parameter sequence for each section of the driving road, and obtain a calibrated power consumption corresponding to the characteristic parameter sequence;

[0083] S505-1. Construct a calibrated power consumption set based on the calibrated power consumption of each driving road section.

[0084] Specifically, in this embodiment, obtaining the calibrated power consumption of the vehicle further includes the following steps:

[0085] S503-11. Based on the vehicle owner's desired destination, obtain a driving route to the destination. In the process of reaching the destination, the vehicle will pass through multiple driving roads, such as a first driving road, a second driving road, etc. S504-11. Obtain the road condition of the vehicle's current driving section. For example, if the vehicle is currently on the first driving road, determine whether the first driving road is a congested section or a non-congested section. Assuming that the vehicle is traveling on the first driving road and is in a congested section, traverse the power consumption calibration database to obtain the calibrated power consumption. S505-11. Construct a calibrated power consumption set based on the calibrated power consumption of each road section. After constructing the calibrated power consumption set, the following steps are also included:

[0086] S506-1. Traverse the calibrated power consumption set to determine the calibrated power consumption of the road the vehicle is currently on, then query the range extender strategy calibration database based on the calibrated power consumption, so as to obtain the power consumption range within which the calibrated power consumption lies, and match the battery with the third power generation power of the range extender based on the power consumption range. Each road condition will correspond to a different third power generation power, and the third power generation powers of different roads are aggregated to obtain a third power generation power set; use the third power generation power corresponding to each road condition to drive the range extender to generate electricity and power the battery, so that the battery power is always greater than or equal to 25%.

[0087] S7. When it is determined that the vehicle has left the stable operating condition, continue to execute the step of determining whether the vehicle has entered the stable operating condition.

[0088] Example 2:

[0089] The present application also provides a control device for reducing fuel consumption of a range-extended vehicle, comprising:

[0090] A judgment module, the judgment module is configured to determine when the vehicle enters a stable operating condition, record a first time, and obtain in real time the real-time power consumption within a first preset time period starting from the first time; the judgment module is connected to a calling module; the calling module is configured to call an extended-range strategy calibration database; the calling module is connected to a query module, the query module is configured to traverse the extended-range strategy calibration database, confirm the power consumption range corresponding to the real-time power consumption, and obtain a first generated power corresponding to the power consumption range; the query module is connected to a driving module, the driving module is configured to drive the range extender to generate electricity with the first generated power to maintain the remaining battery power greater than or equal to a first preset threshold.

[0091] Example 3:

[0092] This embodiment provides a terminal device, the terminal device including:

[0093] A memory, a processor, and a computer program stored on the memory and executable on the processor;

[0094] When the computer program is executed by the processor, the following is achieved: Figure 1 Any step of a method for reducing fuel consumption of a range-extended vehicle.

[0095] Example 4:

[0096] This embodiment provides a computer-readable storage medium, which stores a program for reducing the fuel consumption of an extended-range vehicle. When the program for reducing the fuel consumption of an extended-range vehicle is executed by a processor, the steps of the method for reducing the fuel consumption of an extended-range vehicle as described in any of the above embodiments are implemented.

[0097] Embodiment 5:

[0098] This embodiment provides a server 400, such as Figure 3 As shown, the server 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 402 or programs loaded from a storage unit into a random access memory (RAM) 403. Various programs and data required for system operation are also stored in the RAM 403. The CPU 401, ROM 402, and RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0099] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, and the like; an output section 407 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 408 including a hard disk; and a communication section 409 including a network interface card such as a LAN card or a modem. The communication section 409 performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface 405 as needed. Removable media 411, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 410 as needed, so that computer programs read therefrom can be installed into the storage section 408 as needed.

[0100] In particular, according to an embodiment of the present invention, the above reference Figure 1 The described processes may be implemented as computer software programs. For example, an embodiment of the present invention includes a computer program product comprising a computer program carried on a computer readable medium, the computer program including instructions for executing Figure 1 In such an embodiment, the computer program may be downloaded and installed from a network via the communication section 409 and / or installed from the removable medium 411 .

[0101] It should be noted that the computer-readable medium described in the present invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media can include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. This propagated data signal can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. Program code embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wireline, optical fiber cable, RF, or any suitable combination thereof.

[0102] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the methods and computer program products according to various embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the above-mentioned module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0103] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A control method for reducing fuel consumption of a range-extended vehicle, characterized in that: include: After determining that the vehicle has entered a stable operating condition, the first time is recorded, and real-time power consumption within a first preset time period from the first time is obtained in real time; calling a range-extending strategy calibration database, wherein the range-extending strategy calibration database includes: a plurality of power consumption ranges and a power generation power corresponding to each power consumption range; Traversing the range-extending strategy calibration database, confirming the power consumption range corresponding to the real-time power consumption, and obtaining a first generated power corresponding to the power consumption range; Using the first generated power, driving the range extender to generate electricity, maintaining the remaining battery power greater than or equal to a first preset threshold; The step of determining that the vehicle enters a stable operating condition includes: Obtaining the vehicle speed at intervals of a second preset time length to obtain a vehicle speed set; the vehicle speed set includes: a vehicle speed moment and a vehicle speed corresponding to the moment; Traversing the vehicle speed set, sequentially calculating the vehicle speed increments between two adjacent moments, to obtain a vehicle speed increment set; the vehicle speed increment set includes: a plurality of time intervals and the vehicle speed increments corresponding to the time intervals; Calculating a vehicle speed change ratio based on the vehicle speed set and the vehicle speed increment set to obtain a vehicle speed change ratio set; The vehicle speed change ratio set is traversed, and when it is determined that within a second preset time period before the first time, the absolute value of the difference between two adjacent vehicle speed change ratios is less than a second preset threshold, it is determined that the vehicle enters a stable operating condition.

2. The control method for reducing fuel consumption of an extended-range vehicle according to claim 1, characterized in that: The following steps are also included: After determining that the vehicle has left the stable operating condition, obtaining the calibrated power consumption of the vehicle; Traversing the range-extending strategy calibration database, confirming the power consumption range corresponding to the calibrated power consumption, and obtaining a second generated power corresponding to the power consumption range; The range extender is driven to generate electricity with the second generated power, so as to maintain the remaining battery power greater than or equal to a first preset threshold.

3. The control method for reducing fuel consumption of an extended-range vehicle according to claim 2, characterized in that: Obtaining the vehicle's rated power consumption includes the following steps: Acquire a real-time characteristic parameter sequence, the real-time characteristic parameter sequence at least including: current road conditions and power consumption per 100 kilometers; the road conditions at least including: congestion or non-congestion; Calling a power consumption calibration database, wherein the power consumption calibration database includes: multiple groups of characteristic parameter sequences and calibrated power consumption corresponding to each group of the characteristic parameter sequences; The power consumption calibration database is traversed to confirm a characteristic parameter sequence corresponding to the real-time characteristic parameter sequence, and then the calibrated power consumption corresponding to the characteristic parameter sequence is obtained.

4. The control method for reducing fuel consumption of an extended-range vehicle according to claim 2, characterized in that: The step of obtaining the calibrated power consumption of the vehicle comprises the following steps: In response to a driving destination request, obtaining a driving route, the driving route including a plurality of driving roads; Obtaining a real-time characteristic parameter sequence for each section of the driving road, traversing a power consumption calibration database, and after confirming the characteristic parameter sequence corresponding to the real-time characteristic parameter sequence for each section of the driving road, obtaining a calibrated power consumption corresponding to the characteristic parameter sequence; The calibrated power consumption of each section of driving road is used to construct a calibrated power consumption set.

5. The control method for reducing fuel consumption of an extended-range vehicle according to claim 4, characterized in that: After building the calibration power consumption set, the following steps are also included: Traversing the calibrated power consumption set, querying the range-extended strategy calibration database for a third generated power corresponding to each power consumption value, and obtaining a third generated power set; The range extender is driven to generate electricity using the third generated power set.

6. The control method for reducing fuel consumption of a range-extended vehicle according to any one of claims 2 to 5, characterized in that: After determining that the vehicle has left the stable operating condition, continue to execute the step of determining whether the vehicle has entered the stable operating condition.

7. A control device for reducing fuel consumption of a range-extended vehicle, characterized in that: include: a determination module configured to determine that the vehicle enters a stable operating condition, record a first time, and obtain in real time real-time power consumption within a first preset time period starting from the first time; A calling module configured to call a range-extending strategy calibration database, wherein the range-extending strategy calibration database includes: a plurality of power consumption ranges and a power generation power corresponding to each power consumption range; a query module configured to traverse the range-extending strategy calibration database, confirm the power consumption range corresponding to the real-time power consumption, and obtain a first generated power corresponding to the power consumption range; a driving module configured to drive the range extender to generate electricity using the first generated power, and maintain a remaining battery charge greater than or equal to a first preset threshold; The judgment module is further configured to obtain the vehicle speed at intervals of a second preset time length to obtain a vehicle speed set; the vehicle speed set includes: a vehicle speed moment and a vehicle speed corresponding to the moment; and traversing the vehicle speed set, sequentially calculating the vehicle speed increments between two adjacent moments to obtain a vehicle speed increment set; the vehicle speed increment set includes: a plurality of time intervals and the vehicle speed increments corresponding to the time intervals; and, calculating a vehicle speed change ratio according to the vehicle speed set and the vehicle speed increment set to obtain a vehicle speed change ratio set; And, traversing the vehicle speed change ratio set, determining that the vehicle enters a stable operating condition when the absolute value of the difference between two adjacent vehicle speed change ratios within a second preset time period before the first time is less than a second preset threshold.

8. A terminal device, characterized in that: comprising a memory, a processor, and a computer program stored in the memory and running on the processor; When the computer program is executed by the processor, the steps of the control method for reducing fuel consumption of an extended-range vehicle according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a control program for reducing fuel consumption of an extended-range vehicle. When the control program for reducing fuel consumption of an extended-range vehicle is executed by a processor, the steps of the method for reducing fuel consumption of an extended-range vehicle according to any one of claims 1 to 6 are implemented.

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