Power generation control method, device, server and medium for extended-range electric vehicles

Abstract

The present application discloses a power generation control method, device, server, and medium for an extended-range electric vehicle. The method includes: collecting a first remaining power, and when it is determined that the first remaining power is less than a first preset threshold and greater than or equal to a second preset threshold, collecting a first real-time vehicle speed; when it is determined that the first real-time vehicle speed is greater than the first preset speed, calling a range extender power generation strategy database, and then determining a power generation mode corresponding to the first real-time vehicle speed; driving the range extender with the power generation mode corresponding to the first real-time vehicle speed, collecting a second real-time vehicle speed and a second remaining power, and repeating this step if the second real-time vehicle speed is greater than or equal to the second preset speed or the second remaining power is less than or equal to a third preset threshold; otherwise, stopping the range extender. The present application adopts different power generation strategies based on the current speed and remaining power of the extended-range electric vehicle to avoid long-term low-power power generation of the range extender, reduce the operating time ratio of inefficient operating points, and improve fuel economy.

Description

Technical Field

[0001] The present disclosure generally relates to the field of range extender control, and more particularly to a method, device, server, and medium for controlling power generation of a range-extended electric vehicle. Background Art

[0002] When a range-extended electric vehicle is near a preset battery balance point, the range extender generates electricity to charge the battery, thereby improving the vehicle's range. The current range extender control strategy sets the corresponding SOC balance point based on different driving modes (such as energy saving and sports), and determines the range extender's power generation by determining vehicle speed, the remaining power of the battery (State of Charge, SOC), and the vehicle's required power.

[0003] When the vehicle's SOC is near its equilibrium point and the vehicle is traveling at low speeds, the power demand is low. To maintain the equilibrium SOC, the range extender generates power at low power for extended periods, resulting in poor fuel economy. Improving the range extender's power generation efficiency requires increasing its power output. However, due to the low speed, passengers are highly sensitive to engine noise. Increasing the range extender's power output reduces the vehicle's noise, vibration, and harshness (NVH) performance, impairing the user's driving experience. To address this issue, we propose a power generation control method for range-extended electric vehicles that effectively addresses these issues. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a power generation control method for an extended-range electric vehicle with high power generation efficiency.

[0005] The present application provides a method for controlling power generation of an extended-range electric vehicle, comprising the following steps:

[0006] Collecting the first remaining power, and determining that the first remaining power is less than a first preset threshold,

[0007] When it is determined that the first remaining power is greater than or equal to a second preset threshold, collecting a first real-time vehicle speed;

[0008] When it is determined that the first real-time vehicle speed is greater than the first preset speed,

[0009] The power generation strategy database includes: multiple sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges;

[0010] determining a power generation mode corresponding to a first real-time vehicle speed;

[0011] The range extender is driven in the power generation mode corresponding to the first real-time vehicle speed, the second real-time vehicle speed and the second remaining power are collected, and when it is determined that the second real-time vehicle speed is greater than or equal to the second preset speed or the second remaining power is less than or equal to the third preset threshold, this step is repeated.

[0012] According to the technical solution provided in the embodiment of the present application, after the step of collecting the second real-time vehicle speed and the second remaining power, the following steps are also included:

[0013] When it is determined that the second real-time vehicle speed is less than the second preset speed or the second remaining power is greater than the third preset threshold, the range extender is stopped.

[0014] According to the technical solution provided in the embodiment of the present application, when the first remaining power is collected and it is determined that the first remaining power is less than the first preset threshold, the following steps are also included:

[0015] When it is determined that the first remaining power is less than a second preset threshold, collecting a third real-time vehicle speed;

[0016] When it is determined that the third real-time vehicle speed is greater than the third preset speed,

[0017] Calling the range extender power generation strategy database and determining a power generation mode corresponding to the third real-time vehicle speed;

[0018] The range extender is driven in the power generation mode corresponding to the third real-time vehicle speed, the fourth real-time vehicle speed and the third remaining power are collected, and when it is determined that the fourth real-time vehicle speed is greater than or equal to a fourth preset speed, or the third remaining power is less than or equal to a fourth preset threshold, this step is repeated.

[0019] According to the technical solution provided in the embodiment of the present application, after the step of collecting the fourth real-time vehicle speed and the third remaining power, the following steps are also included:

[0020] When it is determined that the fourth real-time vehicle speed is less than a fourth preset speed or the third remaining power is greater than a fourth preset threshold, the range extender is stopped.

[0021] According to the technical solution provided in the embodiment of the present application, after collecting the first remaining power, the following steps are also included:

[0022] When it is determined that the first remaining power is greater than or equal to a first preset threshold, the range extender is stopped.

[0023] According to the technical solution provided in the embodiment of the present application, the following steps are also included:

[0024] After stopping the range extender, collecting the first remaining power, and when it is determined that the first remaining power is less than the first preset threshold, repeatedly executing the step of collecting the first real-time vehicle speed when it is determined that the first remaining power is greater than or equal to the second preset threshold.

[0025] According to the technical solution provided in the embodiment of the present application, when it is determined that the first real-time vehicle speed is less than or equal to the first preset speed, the range extender is stopped; when it is determined that the third real-time vehicle speed is less than or equal to the third preset speed, the range extender is stopped.

[0026] In a second aspect, the present application provides a power generation control device for an extended-range electric vehicle, comprising:

[0027] a remaining power processing module, wherein the remaining power processing module is configured to collect a first remaining power, determine whether the first remaining power is less than a first preset threshold, and determine whether the first remaining power is greater than or equal to a second preset threshold;

[0028] a real-time vehicle speed determination module configured to collect a first real-time vehicle speed and determine whether the first real-time vehicle speed is greater than a first preset speed;

[0029] a power generation strategy calibration module, the power generation strategy calibration module being configured to call a power generation strategy database for the range extender, the power generation strategy database comprising: a plurality of sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges, and determine a power generation mode corresponding to the first real-time vehicle speed;

[0030] A strategy execution module is configured to drive the range extender in a power generation mode corresponding to the first real-time vehicle speed, collect the second real-time vehicle speed and the second remaining power, and repeat this step when it is determined that the second real-time vehicle speed is greater than or equal to a second preset speed or the second remaining power is less than or equal to a third preset threshold.

[0031] In a third aspect, the present application provides a server comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the processor implements the steps of the above-mentioned method for controlling power generation of an extended-range electric vehicle.

[0032] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for controlling power generation of an extended-range electric vehicle.

[0033] In summary, the present technical solution specifically discloses a power generation control method for an extended-range electric vehicle, comprising the following steps: collecting a first remaining power, and after determining that the first remaining power is less than a first preset threshold, and then continuing to collect a first real-time vehicle speed when it is determined that the first remaining power is greater than or equal to a second preset threshold; when it is determined that the first real-time vehicle speed is greater than the first preset speed, the range extender begins to reasonably plan the power generation according to the current situation, that is, calling a power generation strategy database for the range extender, the power generation strategy database including: multiple sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges, and determining the power generation mode corresponding to the first real-time vehicle speed;

[0034] Subsequently, the range extender is driven in the power generation mode corresponding to the first real-time vehicle speed to collect the second real-time vehicle speed and the second remaining power. When it is determined that the second real-time vehicle speed is greater than or equal to the second preset speed or the second remaining power is less than or equal to the third preset threshold, this step is repeated. When it is determined that the second real-time vehicle speed is less than the second preset speed or the second remaining power is greater than the third preset threshold, the range extender is stopped.

[0035] This application reasonably controls the operation of the range extender according to the current speed of the electric vehicle and the remaining power, which can effectively improve the power generation efficiency of the range extender, while taking into account the problem of low-power power attenuation and meeting the user's power needs under low power conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 The present invention is a flow chart of a method for controlling power generation of an extended-range electric vehicle.

[0038] Figure 2 The present invention is a logic diagram of a power generation control method for an extended-range electric vehicle.

[0039] Figure 3 The figure is a schematic diagram of the structure of a power generation control device for an extended-range electric vehicle.

[0040] Figure 4 This is a principle block diagram of a server.

[0041] Numbers in the figure: 501, CPU; 502, ROM; 503, RAM; 504, bus; 505, I / O interface; 506, input part; 507, output part; 508, storage part; 509, communication part; 510, drive; 511, removable media. DETAILED DESCRIPTION

[0042] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0043] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] Example 1

[0045] Please refer to Figure 1 and Figure 2 The flowchart and logic diagram of the first embodiment of a power generation control method for an extended-range electric vehicle provided by the present application include the following steps:

[0046] like Figure 1 As shown, SOC is the first remaining capacity, SOC' is the second remaining capacity; SOC2 is the first preset threshold, SOC4 is the second preset threshold; SOC1 is the third preset threshold; V1 is the first preset speed; V2 is the second preset speed; V is the first real-time vehicle speed; V' is the second real-time vehicle speed; optionally, the first preset threshold SOC2 is 20%; the second preset threshold SOC4 is 15%; the third preset threshold SOC1 is 25%; the first preset speed V1 and the second preset speed V2 are between 50km / h and 60km / h;

[0047] Among them, the selection of the first preset threshold SOC2, the second preset threshold SOC4, the third preset threshold SOC1, the first preset speed V1 and the second preset speed V2 can all be adjusted according to actual conditions. For example, the first preset threshold SOC2 can be adjusted according to the mileage requirement of the vehicle in pure electric mode to ensure that the vehicle does not encounter the problem of too low remaining power while the range extender is still in the power generation state during driving; the second preset threshold SOC4 can be selected according to the power loss difference at low vehicle speed; the third preset threshold SOC1 is the boundary power for exiting the range extender and stopping operation, which is mainly set as the range extender shutdown point to avoid frequent starting and stopping of the range extender; and the first speed V1 and the second speed V2 are related to the speed that the specific vehicle can maintain when the battery is low. For example, the first speed V1 is the maximum speed that the vehicle battery can support between the first preset threshold SOC2 and the second preset threshold SOC4, so in the actual selection process, it can be adjusted according to the set remaining power threshold.

[0048] S100: Collecting a first remaining charge SOC, and collecting a first real-time vehicle speed V when it is determined that the first remaining charge SOC is less than a first preset threshold SOC2 or when it is determined that the first remaining charge SOC is greater than or equal to a second preset threshold SOC4.

[0049] Specifically, a first remaining power SOC is collected. When it is determined that the first remaining power SOC is less than a first preset threshold value SOC2, the range extender pre-start phase may be entered. When it is further determined that the first remaining power SOC is greater than or equal to a second preset threshold value SOC4, the range extender first-level power generation strategy pre-start phase may be entered, and then the first real-time vehicle speed V is collected.

[0050] S200: When it is determined that the first real-time vehicle speed V is greater than the first preset speed V1, calling the range extender power generation strategy database;

[0051] The above power generation strategy database is shown in Table 1, including: multiple sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges;

[0052] Among them, the type of power generation mode, such as Figure 1 As shown, for example, the first-level power generation strategy and the second-level power generation strategy, at this time, in response to the range extender's first-level power generation strategy;

[0053] Table 1 Power generation strategy database structure

[0054]

[0055]

[0056] S300: Determining a power generation mode corresponding to a first real-time vehicle speed;

[0057] It should be noted that the power generation strategy database structure can also introduce other conditions as the basis for calling, such as required power, and correspondingly other power generation modes, which can meet the power generation needs of the range extender under other operating conditions of the extended-range vehicle.

[0058] S400: driving the range extender in the power generation mode corresponding to the first real-time vehicle speed V. During the operation of the range extender, collecting the second real-time vehicle speed V′ and the current second remaining charge SOC′ in real time. When it is determined that the second real-time vehicle speed V′ is greater than or equal to the second preset speed V2 or the second remaining charge is less than or equal to the third preset threshold SOC1, repeating this step indicates that the current operating condition of the vehicle does not meet the conditions for exiting the range extender power generation, and the range extender continues to operate in this power generation mode.

[0059] Specifically, when it is determined that the second real-time vehicle speed V′ is less than the second preset speed V2 or the second remaining power SOC′ is greater than the third preset threshold SOC1, at this time, the vehicle's operating condition meets the conditions for exiting the range extender power generation, and the range extender stops operating;

[0060] To sum up, the present application stipulates that the range extender can only be started when the current remaining power of the electric vehicle is less than the first preset threshold value SOC2; at the same time, its remaining power is greater than or equal to the second preset threshold value SOC4, and the current vehicle speed is greater than the first preset speed V1, which meets the start-up conditions of the range extender's first-level power generation strategy, and the conditions for exiting the first-level power generation strategy are: the current remaining power of the vehicle is greater than the third preset threshold value SOC1 or the current vehicle speed is less than the second preset speed V2; in addition, in order to avoid the range extender generating power at low speed, the choice of starting vehicle speed can also be obtained through testing and calibration under standard working conditions (subject to actual conditions) to meet the needs of most users.

[0061] like Figure 1 As shown, V3 is the third preset speed, V4 is the fourth preset speed; SOC3 is the fourth preset threshold; SOC″ is the third remaining power; V″ is the third real-time vehicle speed; V′″ is the fourth real-time vehicle speed; optionally, the third preset speed V3 and the fourth preset speed V4 are between 20km / h-30km / h; the fourth preset threshold SOC3 is close to the first preset threshold SOC2, and can be selected as about 18%; the selection of the fourth preset threshold SOC3, the third preset speed V3 and the fourth preset speed V4 can also be adjusted according to actual conditions; the selection principle of the fourth preset threshold SOC3 is similar to that of the third preset threshold SOC1; the selection of the third preset speed V3 and the fourth preset speed V4 also needs to be related to the remaining power threshold set for the actual vehicle.

[0062] Specifically, in step S100: collecting the first remaining power SOC, and determining that the first remaining power SOC is less than the first preset threshold SOC2, the following steps are also included:

[0063] If the first remaining power SOC is less than the second preset threshold SOC4, the range extender enters the secondary power generation strategy pre-start phase, and then the third real-time vehicle speed V″ is collected;

[0064] When it is determined that the third real-time vehicle speed V″ is greater than the third preset speed V3, according to the power generation strategy database structure in Table 1, the conditions for starting the range extender's secondary power generation strategy are met. At this time, the range extender power generation strategy database is called, and the power generation mode corresponding to the third real-time vehicle speed is determined, such as Figure 1 As shown, at this time, in response to the secondary power generation strategy;

[0065] The range extender is driven in the power generation mode corresponding to the third real-time vehicle speed V″, and the fourth real-time vehicle speed V′″ and the third remaining power SOC″ are collected. When it is determined that the fourth real-time vehicle speed V′″ is greater than or equal to the fourth preset speed V4 or the third remaining power SOC″ is less than or equal to the fourth preset threshold value SOC3, this step is repeated, and the range extender continues to operate according to the secondary power generation strategy;

[0066] Specifically, when it is determined that the fourth real-time vehicle speed V′″ is less than the fourth preset speed V4 or the third remaining power is greater than the fourth preset threshold SOC3, the range extender is stopped.

[0067] In summary, in order to avoid excessive discharge of electric vehicle batteries, which may lead to serious power attenuation of the entire vehicle, the start-up conditions of the range extender's secondary power generation strategy are set as follows: the remaining power is less than the second preset threshold SOC4, and the current vehicle speed is greater than the third preset speed. The conditions for exiting the secondary power generation strategy are: the current remaining power of the vehicle is greater than the fourth preset threshold SOC3 or the current vehicle speed is less than the fourth preset speed V4;

[0068] Furthermore, the above-mentioned preset threshold and real-time vehicle speed have the following relationship:

[0069] SO4 <SOC3<SOC2<SOC1;

[0070] V4≤V3≤V2≤V1;

[0071] Among them, the units of V1, V2, V3 and V4 are all km / h; the units of SOC4, SOC3, SOC2 and SOC1 are all %.

[0072] Specifically, when it is determined that the first remaining power SOC is greater than or equal to the first preset threshold value SOC2, the range extender is stopped. At this time, the remaining power of the vehicle is sufficient and the range extender does not need to be activated, which can effectively avoid the problem of the range extender continuously charging the battery. After the battery provides the power required for driving to the motor, the rest will be used to charge the battery; so in the actual driving process, the car accelerates or decelerates, and when it decelerates, it will recover part of the energy to charge the battery. If the range extender continues to charge the battery, causing the battery power to be close to a full charge state, then the energy that can be recovered by deceleration / braking of the vehicle in a fully charged state will not charge the battery, resulting in this part of the energy being wasted.

[0073] Furthermore, after stopping the range extender, the first remaining power SOC is collected. When it is determined that the first remaining power SOC is less than the first preset threshold value SOC2, the step of collecting the first real-time vehicle speed when it is determined that the first remaining power is greater than or equal to the second preset threshold value is repeatedly performed, thereby forming a continuous monitoring of the vehicle's remaining power. It is ensured that when the current remaining power of the vehicle, that is, the first remaining power SOC collected under different operating conditions is lower than the first preset threshold value SOC2, the charging state can be carried out in time to ensure the normal driving of the vehicle. In this way, in the absence of a map navigation to predict the vehicle's driving conditions, reasonable control of the range extender's power generation can be completed according to the vehicle speed and the remaining power.

[0074] Specifically, when it is determined that the first real-time vehicle speed V is less than or equal to the first preset speed V1, the range extender is stopped; when it is determined that the third real-time vehicle speed V′ is less than or equal to the third preset speed V3, the range extender is stopped. Both of these situations do not meet the conditions for calling the range extender power generation strategy database. This process is to avoid blind charging of the range extender when the remaining power is in a chargeable state but the remaining power can meet the current power required by the vehicle; by collecting the current vehicle speed, the conditions for entering the range extender power generation state are further refined to ensure that the range extender does not generate electricity at a lower vehicle speed, thereby reducing the proportion of operating time at inefficient operating points and improving fuel economy.

[0075] The following describes the primary and secondary power generation strategies for the range extender:

[0076] The primary and secondary power generation strategies are mainly based on the vehicle automatically selecting the range extender power generation point with a driving power exceeding the current real-time vehicle speed. At the same time, the power of the power generation point is within the NVH safety range at the corresponding real-time vehicle speed and is within the preset efficiency area of ​​the range extender.

[0077] Specifically, in the first-level power generation strategy, the excess energy generated by the range extender is stored in the battery to supplement the power consumed in the low-speed range, so that the power is maintained at the starting value. At the same time, and under the premise of meeting NVH requirements, the power generation speed and torque are selected according to the range extender's optimal efficiency curve;

[0078] The secondary power generation strategy selects the range extender power generation point based on a power that exceeds the actual driving power demand of the vehicle, which can charge the battery and quickly restore the power. When the battery power exceeds the set balance point SOC3, the range extender is turned off, i.e., the range extender stops running.

[0079] It should be noted that the specific selection of the range extender power generation point in the first-level power generation strategy and the second-level power generation strategy will be comprehensively judged by the vehicle end based on the current vehicle operating conditions, remaining power, required power and other parameters. It will not only exceed the actual driving power demand of the vehicle but also take into account that the selection range is within the NVH safety range. It is a very complex and huge process.

[0080] The fundamental principle of this solution is that when the vehicle's battery charge is less than the remaining charge required for the range extender to start, the range extender is started and stopped using vehicle speed. To prevent the range extender from generating power at low speeds, a starting speed is set. This starting speed can be determined through testing and calibration under standard operating conditions to meet the needs of most users.

[0081] When the vehicle's actual speed is lower than the starting speed, the range extender is not activated. When the vehicle's actual speed is higher than the starting speed, the range extender is activated and the range extender's power generation point is selected to exceed the actual driving power required by the vehicle in the current speed range. The selection of this power point should also meet the NVH requirements at the corresponding speed and be within the range extender's optimal efficiency area. At this time, the excess electricity generated by the range extender is stored in the battery to supplement the power consumed in the low-speed range to meet the vehicle's power consumption requirements. When the vehicle's actual speed is lower than the exit speed or the battery power is greater than the range extender's exit residual circuit, the range extender is shut down, effectively controlling the range extender's power generation point to achieve the purpose of reducing fuel consumption and improving driving range.

[0082] Example 2

[0083] like Figure 3 As shown, a power generation control device for an extended-range electric vehicle includes:

[0084] The remaining power processing module is configured to collect the first remaining power, determine whether the first remaining power is less than a first preset threshold, and determine whether the first remaining power is greater than or equal to a second preset threshold; specifically, when the first remaining power is less than the first preset threshold, determine whether the first remaining power is greater than or equal to the second preset threshold, otherwise, directly stop the operation of the range extender; when the first remaining power is greater than or equal to the second preset threshold, perform the vehicle speed determination stage before the first-level power generation strategy of the range extender, otherwise, enter the vehicle speed determination stage before the second-level power generation strategy of the range extender;

[0085] a real-time vehicle speed determination module configured to collect a first real-time vehicle speed and determine whether the first real-time vehicle speed is greater than a first preset speed; when the first real-time vehicle speed is greater than the first preset speed, a first-level power generation strategy is initiated; when the first real-time vehicle speed is less than or equal to the first preset speed, the range extender is stopped;

[0086] a power generation strategy calibration module, the power generation strategy calibration module being configured to call a power generation strategy database for the range extender, the power generation strategy database including: a plurality of sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges, and determining a power generation mode corresponding to the first real-time vehicle speed;

[0087] The strategy execution module is configured to drive the range extender in a power generation mode corresponding to the first real-time vehicle speed, collect the second real-time vehicle speed and the second remaining power, and repeat this step when it is determined that the second real-time vehicle speed is greater than or equal to the second preset speed or the second remaining power is less than or equal to a third preset threshold.

[0088] Furthermore, the remaining power processing module is specifically used to determine whether the third remaining power is greater than a fourth preset threshold and whether the second remaining power is greater than the third preset threshold. When the third remaining power is greater than the fourth preset threshold, the range extender is stopped; when the second remaining power is greater than the third preset threshold, the range extender is stopped.

[0089] The real-time vehicle speed determination module is further configured to collect a third real-time vehicle speed and determine whether the third real-time vehicle speed is greater than a third preset speed. When the third real-time vehicle speed is greater than the third preset speed, the secondary power generation strategy is activated. When the third real-time vehicle speed is less than or equal to the third preset speed, the range extender is stopped.

[0090] The strategy execution module is further specifically configured to drive the range extender in a power generation mode corresponding to the third real-time vehicle speed, collect a fourth real-time vehicle speed and a third remaining power, and repeat this step when it is determined that the fourth real-time vehicle speed is greater than or equal to a fourth preset speed, or the third remaining power is less than or equal to a fourth preset threshold.

[0091] Example 3

[0092] A server comprises a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of a method for controlling power generation of an extended-range electric vehicle as described in Example 1 are implemented.

[0093] In this embodiment, if Figure 4 As shown, the computer system includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part into the random access memory (RAM) 503. Various programs and data required for system operation are also stored in the RAM 503. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0094] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, and the like; an output section including a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN card or a modem. The communication section 509 performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface 505 as needed. Removable media 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, and the like, is installed in the drive 510 as needed, so that computer programs read therefrom can be installed into the storage section 508 as needed.

[0095] In particular, according to an embodiment of the present invention, the above reference process Figure 1 The described process can be implemented as a computer software program. For example, embodiment 2 of the present invention includes a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication portion and / or installed from a removable medium. When the computer program is executed by the central processing unit (CPU) 501, the above-mentioned functions defined in the system of the present application are performed.

[0096] 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.

[0097] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, 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 implementing 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 or flowchart, and the combination of boxes in the block diagram 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.

[0098] The units involved in the embodiments of the present invention may be implemented in software or in hardware, and the units described may also be provided in a processor. The names of these units do not, in some cases, constitute a limitation on the units themselves. The units or modules described may also be provided in a processor, for example, they may be described as: a processor comprising a first generation module, an acquisition module, a search module, a second generation module, and a merging module. The names of these units or modules do not, in some cases, constitute a limitation on the units or modules themselves, for example, the acquisition module may also be described as "an acquisition module for acquiring multiple instances to be detected in the basic table."

[0099] As another aspect, the present application further provides a computer-readable medium, which may be included in the electronic device described in the above embodiments, or may exist independently without being incorporated into the electronic device. The computer-readable medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device implements the power generation control method for an extended-range electric vehicle as described in the above embodiments.

[0100] The units involved in the embodiments of the present invention may be implemented in software or in hardware, and the units described may also be provided in a processor. The names of these units do not, in some cases, constitute a limitation on the units themselves. The units or modules described may also be provided in a processor, for example, they may be described as: a processor comprising a first generation module, an acquisition module, a search module, a second generation module, and a merging module. The names of these units or modules do not, in some cases, constitute a limitation on the units or modules themselves, for example, the acquisition module may also be described as "an acquisition module for acquiring multiple instances to be detected in the basic table."

[0101] As another aspect, the present application further provides a computer-readable medium, which may be included in the electronic device described in the above embodiments, or may exist independently without being incorporated into the electronic device. The computer-readable medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device implements the power generation control method for an extended-range electric vehicle as described in the above embodiments.

[0102] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A power generation control method for an extended-range electric vehicle, characterized in that: The steps include: collecting a first remaining power, and collecting a first real-time vehicle speed when it is determined that the first remaining power is less than a first preset threshold, or when it is determined that the first remaining power is greater than or equal to a second preset threshold; When it is determined that the first real-time vehicle speed is greater than the first preset speed, calling a range extender power generation strategy database, the power generation strategy database including: multiple sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges; determining a power generation mode corresponding to a first real-time vehicle speed; Driving the range extender in the power generation mode corresponding to the first real-time vehicle speed, collecting the second real-time vehicle speed and the second remaining power, and repeating this step when it is determined that the second real-time vehicle speed is greater than or equal to a second preset speed, or the second remaining power is less than or equal to a third preset threshold; When the first remaining power is collected and it is determined that the first remaining power is less than a first preset threshold, the following steps are further included: When it is determined that the first remaining power is less than a second preset threshold, collecting a third real-time vehicle speed; When it is determined that the third real-time vehicle speed is greater than the third preset speed, calling the range extender power generation strategy database and determining a power generation mode corresponding to the third real-time vehicle speed; driving the range extender in the power generation mode corresponding to the third real-time vehicle speed, collecting the fourth real-time vehicle speed and the third remaining power, and repeating this step when it is determined that the fourth real-time vehicle speed is greater than or equal to a fourth preset speed or the third remaining power is less than or equal to a fourth preset threshold; The first preset threshold is set according to the mileage requirement of the vehicle in pure electric mode; the second preset threshold is set according to the power-off difference at low vehicle speed; the third preset threshold and the fourth preset threshold are the boundary power thresholds at which the range extender stops operating in different power generation modes; the second preset threshold is less than the fourth preset threshold, the fourth preset threshold is less than the first preset threshold, and the first preset threshold is less than the third preset threshold; the first preset speed is greater than or equal to the second preset speed, the second preset speed is greater than or equal to the third preset speed, and the third preset speed is greater than or equal to the fourth preset speed.

2. The power generation control method of a range-extended electric vehicle according to claim 1, characterized in that: After the step of collecting the second real-time vehicle speed and the second remaining power, the following step is also included: When it is determined that the second real-time vehicle speed is less than the second preset speed or the second remaining power is greater than the third preset threshold, the range extender is stopped.

3. The power generation control method of an extended-range electric vehicle according to claim 1, characterized in that: After the step of collecting the fourth real-time vehicle speed and the third remaining power, the method further includes the following steps: When it is determined that the fourth real-time vehicle speed is less than a fourth preset speed or the third remaining power is greater than a fourth preset threshold, the range extender is stopped.

4. The power generation control method of an extended-range electric vehicle according to claim 1 or 2, characterized in that: After collecting the first remaining power, the following steps are also included: When it is determined that the first remaining power is greater than or equal to a first preset threshold, the range extender is stopped.

5. The power generation control method of an extended-range electric vehicle according to claim 1 or 2, characterized in that: The following steps are also included: After stopping the range extender, collecting the first remaining power, and when it is determined that the first remaining power is less than the first preset threshold, repeatedly executing the step of collecting the first real-time vehicle speed when it is determined that the first remaining power is greater than or equal to the second preset threshold.

6. The power generation control method of an extended-range electric vehicle according to claim 1, characterized in that: The following steps are also included: When it is determined that the first real-time vehicle speed is less than or equal to the first preset speed, stopping the range extender; When it is determined that the third real-time vehicle speed is less than or equal to the third preset speed, the range extender is stopped.

7. A power generation control device for an extended-range electric vehicle, characterized in that: include: a remaining power processing module, the remaining power processing module being configured to collect a first remaining power, determine whether the first remaining power is less than a first preset threshold, and determine whether the first remaining power is greater than or equal to a second preset threshold; a real-time vehicle speed determination module configured to collect a first real-time vehicle speed and determine whether the first real-time vehicle speed is greater than a first preset speed; a power generation strategy calibration module, the power generation strategy calibration module being configured to call a power generation strategy database for the range extender, the power generation strategy database comprising: a plurality of sets of speed ranges and remaining power ranges, and power generation modes corresponding to the two ranges, and determine a power generation mode corresponding to the first real-time vehicle speed; a strategy execution module configured to drive the range extender in a power generation mode corresponding to the first real-time vehicle speed, collect a second real-time vehicle speed and a second remaining power, and repeat this step when it is determined that the second real-time vehicle speed is greater than or equal to a second preset speed or the second remaining power is less than or equal to a third preset threshold; The real-time vehicle speed determination module is further configured to collect a third real-time vehicle speed and determine whether the third real-time vehicle speed is greater than a third preset speed; the power generation strategy calibration module is further configured to call a range extender power generation strategy database and determine a power generation mode corresponding to the third real-time vehicle speed; The strategy execution module is further configured to drive the range extender in a power generation mode corresponding to the third real-time vehicle speed, collect a fourth real-time vehicle speed and a third remaining power, and repeat this step when it is determined that the fourth real-time vehicle speed is greater than or equal to a fourth preset speed or the third remaining power is less than or equal to a fourth preset threshold; The first preset threshold is set according to the mileage requirement of the vehicle in pure electric mode; the second preset threshold is set according to the power-off difference at low vehicle speed; the third preset threshold and the fourth preset threshold are the boundary power thresholds at which the range extender stops operating in different power generation modes; the second preset threshold is less than the fourth preset threshold, the fourth preset threshold is less than the first preset threshold, and the first preset threshold is less than the third preset threshold; the first preset speed is greater than or equal to the second preset speed, the second preset speed is greater than or equal to the third preset speed, and the third preset speed is greater than or equal to the fourth preset speed.

8. A server comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the power generation control method of the extended-range electric vehicle as described in any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program, characterized in that: When the computer program is executed by a processor, the steps of the power generation control method of an extended-range electric vehicle as claimed in any one of claims 1 to 6 are implemented.

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