Extended-range electric vehicle control method and system, medium and product

Abstract

The invention relates to the technical field of automobile control, in particular to an extended-range electric vehicle control method and system, a medium and a product. The method comprises the steps that running information of the extended-range electric vehicle is collected; obtaining the forced charging basic power of the whole vehicle based on the operation information; calculating a complete vehicle forced charging flag bit according to the complete vehicle forced charging basic power; determining theoretical complete vehicle forced charging power according to the complete vehicle forced charging flag bit; determining engine demand generation power based on the theoretical whole vehicle forced charging power and engine basic generation power; and determining the maximum allowable output power of the whole vehicle based on the theoretical whole vehicle forced charging power, the actual power generation power of the generator and the operation information. According to the control method, when the electric quantity of the power battery is low, the whole vehicle driving power and the generator power can be effectively controlled, under the condition that the whole vehicle has certain power output, the electric quantity of the power battery cannot be continuously reduced, and the vehicle is effectively prevented from lying down.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile control, in particular to a control method and system for an extended-range electric vehicle (REV), a medium and a product. BACKGROUND

[0002] An extended-range electric vehicle (REV) is an electric vehicle with a dual power system, also known as an "extended-range hybrid vehicle". This vehicle model is equipped with an electric motor and a battery, as well as a generator and an engine. This vehicle model has the advantages of enjoying the environmental protection and economy of an electric vehicle, and overcoming the short driving range problem of a pure electric vehicle. However, the extended-range electric vehicle has the problem of "small horse pulling a big cart", i.e., the maximum power of the engine is small, and the overall vehicle weight is heavy. When the vehicle is running at high speed or in extreme off-road conditions, even if the engine is always running at high power, the power of the overall vehicle battery will continue to decrease, and eventually the power of the battery will be depleted, and the power will decrease to 0%, and the vehicle will be stranded.

[0003] In order to avoid these situations, it is necessary to develop a low-power power preservation method for an extended-range electric vehicle. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned problems in the background art, and to provide a control method and system for an extended-range electric vehicle, a medium and a product.

[0005] The technical solution of the present application is as follows: a control method for an extended-range electric vehicle, the method comprising: collecting running information of the extended-range electric vehicle; obtaining a basic power for forced charging of the overall vehicle based on the running information; calculating a forced charging flag of the overall vehicle based on the basic power for forced charging of the overall vehicle; determining a first forced charging power of the overall vehicle in a normal mode and a second forced charging power of the overall vehicle in an extreme mode based on the forced charging flag of the overall vehicle; taking the sum of the first forced charging power of the overall vehicle and the second forced charging power of the overall vehicle as a theoretical forced charging power of the overall vehicle; determining a required power generation power of the engine based on the theoretical forced charging power of the overall vehicle and a basic power generation power of the engine; determining a maximum allowable output power of the overall vehicle based on the theoretical forced charging power of the overall vehicle, an actual power generation power of the generator and the running information.

[0006] According to the control method of the extended-range electric vehicle provided in the application, the method for obtaining the basic power of the forced charging of the whole vehicle based on the operation information comprises: determining the minimum target battery power based on the ambient temperature signal in the operation information; determining the battery power difference based on the battery power and the minimum target battery power; and determining the basic power of the forced charging of the whole vehicle based on the battery power difference.

[0007] According to the control method of the extended-range electric vehicle provided in the application, the method for calculating the forced charging flag of the whole vehicle based on the basic power of the forced charging of the whole vehicle comprises: when the basic power of the forced charging of the whole vehicle is less than 0, the forced charging flag of the whole vehicle is set to 1, otherwise, the forced charging flag of the whole vehicle is reset to 0.

[0008] According to the control method of the extended-range electric vehicle provided in the application, the method for determining the first forced charging power of the whole vehicle in the normal mode based on the forced charging flag of the whole vehicle comprises: when the forced charging flag of the whole vehicle is reset to 0, the first forced charging power of the whole vehicle is a first set value; and when the forced charging flag of the whole vehicle is set to 1, the first forced charging power of the whole vehicle is the basic power of the forced charging of the whole vehicle.

[0009] According to the control method of the extended-range electric vehicle provided in the application, the method for determining the second forced charging power of the whole vehicle in the extreme mode based on the forced charging flag of the whole vehicle comprises: when the forced charging flag of the whole vehicle is reset to 0, the second forced charging power of the whole vehicle is a second set value; when the forced charging flag of the whole vehicle is set to 1, a forced charging power difference of the whole vehicle is calculated based on the basic power of the forced charging of the whole vehicle and the actual power of the battery in the operation information, an integral basic value of the forced charging power of the whole vehicle is obtained based on the forced charging power difference of the whole vehicle, and the second forced charging power of the whole vehicle is obtained by integrating the integral basic value of the forced charging power of the whole vehicle.

[0010] According to the control method of the extended-range electric vehicle provided in the application, the method for determining the required power generation of the engine based on the basic power of the forced charging of the whole vehicle and the basic power generation of the engine comprises: taking the sum of the smaller one of the basic power of the forced charging of the whole vehicle and 0 and the basic power generation of the engine as the required power generation of the engine.

[0011] According to the control method of the extended-range electric vehicle provided in the application, the method for determining the maximum allowed output power of the whole vehicle based on the basic power of the forced charging of the whole vehicle, the actual power generation of the generator and the operation information comprises: determining the maximum allowed discharge power of the SOC based on the battery power difference; taking the smaller one of the actual power generation of the generator and the difference between the basic power of the forced charging of the whole vehicle and 0 as the output power of the generator; and taking the sum of the smaller one of the maximum allowed discharge power of the BMS and the maximum allowed discharge power of the SOC and the output power of the generator as the maximum allowed output power of the whole vehicle.

[0012] The application relates to a control system of a range-extended electric vehicle, the control system being according to the range-extended electric vehicle control method, comprising, an operation information acquisition module, which is used for acquiring range-extended electric vehicle operation information; a basic power determination module, which obtains a whole vehicle forced charging basic power based on the operation information; a flag bit acquisition module, which calculates a whole vehicle forced charging flag bit according to the whole vehicle forced charging basic power; a forced charging power calculation module, which determines a first whole vehicle forced charging power in a normal mode and a second whole vehicle forced charging power in an extreme mode according to the whole vehicle forced charging flag bit, and takes the sum of the first whole vehicle forced charging power and the second whole vehicle forced charging power as a theoretical whole vehicle forced charging power; a demand power generation calculation module, which determines an engine demand power generation power based on the theoretical whole vehicle forced charging power and an engine basic power generation power; an allowed output power calculation module, which determines a whole vehicle maximum allowed output power based on the theoretical whole vehicle forced charging power, an actual power generation power of a generator and the operation information.

[0013] The application relates to a storage medium, which is a computer readable storage medium, and has a computer program stored thereon, the computer program being used to realize the steps of the range-extended electric vehicle control method.

[0014] The application relates to a computer program product, which comprises a computer program, the computer program being used to realize the steps of the range-extended electric vehicle control method.

[0015] The application has the following advantages: 1. The application calculates the engine demand power generation power and the whole vehicle maximum allowed output power of the range-extended electric vehicle, ensures that the range-extended electric vehicle meets the requirements in terms of power generation power and output power, effectively controls the whole vehicle driving power and the generator power when the power battery electric quantity is low, ensures that the power battery electric quantity does not continuously decrease under the condition that the whole vehicle has a certain power output, effectively prevents the vehicle from being stuck, improves the safety of the range-extended electric vehicle and improves the user experience; 2. The application has a very simple way of obtaining the whole vehicle forced charging basic power, the whole vehicle forced charging basic power is obtained based on a battery electric quantity difference, that is, a basic charging power required by the current battery electric quantity difference, ensures that subsequent calculation operations always meet the basic charging requirements of the power battery, and can effectively avoid the problem that the power battery is too low but cannot be charged in time. 3、The way of determining the whole vehicle forced charging flag bit of the application is very simple, which is determined by judging the whole vehicle forced charging basic power. If the whole vehicle forced charging basic power is less than 0, it proves that there is a charging demand, and then the flag bit is set. Otherwise, the flag bit is reset. Through the determination of the whole vehicle forced charging flag bit, the demand of the vehicle power battery can be determined, which is convenient for further calculation and analysis. 4、The first whole vehicle forced charging power of the application is determined based on the basic charging power of the extended-range electric vehicle under normal driving. The way of determining the first whole vehicle forced charging power is very simple, which is calculated respectively according to different states of the whole vehicle forced charging flag bit. The first whole vehicle forced charging power under normal conditions can be accurately obtained, and the operation is simple. 5、The second whole vehicle forced charging power obtained by the application is based on the charging power under the extreme mode of the vehicle, that is, the charging power calculated under the mode of rapid acceleration or high power output. The second whole vehicle forced charging power corresponds to the extreme condition, and cooperates with the first whole vehicle forced charging power to accurately obtain the theoretical whole vehicle forced charging power, so that the charging power control of the extended-range electric vehicle is more accurate. 6、The way of determining the engine demand power generation power of the application is very simple, which considers the theoretical whole vehicle forced charging power and the basic power generation power of the engine, so as to ensure that the finally obtained engine demand power generation power meets the requirements of the equipment. 7、The whole vehicle maximum allowable output power of the application is determined by considering multiple factors, such as the SOC maximum allowable discharge power, the BMS maximum allowable discharge power and the generator end output power, so as to ensure that the finally obtained whole vehicle maximum allowable output power meets the requirements of all parties, and the problem of excessive output power does not occur, which further improves the safety of vehicle use. 8、The application also relates to a control system. The control system of the application integrates the above-mentioned control method. The control system of the application can be integrated into the control system of the vehicle. In the actual use process of the extended-range electric vehicle, the low-power intelligent power protection of the extended-range electric vehicle can be accurately and conveniently controlled. When the power battery has low power, the whole vehicle driving power and the generator power can be effectively controlled. Under the condition of ensuring that the whole vehicle has certain power output, the power battery power will not continuously decrease, which effectively prevents the vehicle from being stuck. 9、The application also relates to a storage medium and a program product. That is, the control method of the application can be converted into different forms, which is convenient for application in the extended-range electric vehicle, and the application range is extremely wide.

[0016] The extended-range electric vehicle control method of the application ensures that the extended-range electric vehicle meets the requirements of both power generation power and output power. When the power battery has low power, the whole vehicle driving power and the generator power can be effectively controlled. Under the condition of ensuring that the whole vehicle has certain power output, the power battery power will not continuously decrease, which effectively prevents the vehicle from being stuck. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 : Logic diagram of the control method of the extended-range electric vehicle of the present application; Figure 2 : Device structure schematic diagram of the hardware operating environment involved in the control method of the extended-range electric vehicle in the embodiment of the present application. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, wherein identical or similar labels represent identical or similar elements or elements with identical or similar functions throughout. The embodiments described below are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0021] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0022] The present application relates to a control method of an extended-range electric vehicle. The control method of the present application is applied to an extended-range electric vehicle. During the operation of the extended-range electric vehicle, when the extended-range electric vehicle is in a low power condition, the engine required power generation and the maximum allowable output power of the vehicle are calculated to ensure that the extended-range electric vehicle meets the requirements in terms of power generation and output power. The driving power and the generator power of the vehicle can be effectively controlled, and the power battery power will not continuously decrease under the condition of ensuring a certain power output of the vehicle, thereby effectively preventing the vehicle from being stuck.

[0023] Specifically, the control method of the extended-range electric vehicle of the present application is as follows: as shown in Figure 1 ​S1, collect extended-range electric vehicle operation information; The collected extended-range electric vehicle operation information required by the application includes: actual battery power, ambient temperature, actual battery power signal, engine basic power generation power, BMS maximum allowable discharge power, and generator actual power generation power. The above signal information can be obtained and collected through the vehicle control system; S2, calculate engine demand power generation; S21, obtain the basic power of the whole vehicle forced charging based on the operation information; S22, calculate the whole vehicle forced charging flag according to the basic power of the whole vehicle forced charging; S23, determine the first whole vehicle forced charging power in normal mode and the second whole vehicle forced charging power in extreme mode according to the whole vehicle forced charging flag; S24, the sum of the first whole vehicle forced charging and the second whole vehicle forced charging power is the theoretical whole vehicle forced charging power; S25, determine the engine demand power generation based on the theoretical whole vehicle forced charging power and the engine basic power generation power; S3, calculate the maximum allowable output power of the whole vehicle; The maximum allowable output power of the whole vehicle is determined based on the theoretical whole vehicle forced charging power, the actual power generation power of the generator, and the operation information.

[0024] The engine demand power generation refers to the power that the engine needs to generate under the current conditions to meet the charging demand of the power battery; the maximum allowable output power of the whole vehicle refers to the power that needs to be output under the current conditions to meet the vehicle operation demand. That is, the application controls the extended-range electric vehicle from two aspects of engine demand power generation and maximum allowable output power of the whole vehicle, which actually ensures that the power battery and the engine of the extended-range electric vehicle meet the requirements under any conditions, and the low power situation does not occur.

[0025] In some embodiments of the application, the step S2 described above is optimized, specifically, as shown in Figure 1 The following steps can be performed: S21, obtain the basic power of the whole vehicle forced charging based on the operation information; According to the ambient temperature signal in the operation information (the operation information is obtained from the vehicle VCU), the lowest target battery power is determined, which can be obtained through the query table one: Table 1: Ambient temperature and battery lowest target power correspondence table The battery power difference is determined based on the battery power in the running information (actual power of the current power battery) and the battery minimum target power, and the specific calculation method is: battery power difference = battery power - battery minimum target power; The basic power of the vehicle forced charging is determined based on the battery power difference, and is obtained by querying Table 2: Table 2: Correspondence table of battery power difference and basic power of vehicle forced charging At this point, the basic power of the vehicle forced charging under the current situation can be obtained, because the basic power of the vehicle forced charging is obtained based on the current battery minimum target power, and the basic power of the vehicle forced charging and the battery minimum target power are matched and corresponding. When the battery power is low, that is, the battery power difference is large, a larger power forced charging means is used for charging to avoid the problem of continuous decline of the power battery power and the appearance of the power battery power due to insufficient charging when the power battery power is too low.

[0026] S22, calculating the vehicle forced charging flag according to the basic power of the vehicle forced charging; When the basic power of the vehicle forced charging is less than 0, the vehicle forced charging flag is set, and at this time the vehicle needs to force charge the power battery; otherwise, the vehicle forced charging flag is reset, and at this time the vehicle does not need to force charge the power battery.

[0027] S23, determining the first vehicle forced charging power in normal mode and the second vehicle forced charging power in extreme mode according to the vehicle forced charging flag; When the vehicle forced charging flag is reset, the first vehicle forced charging power is a first set value, and the first set value of the embodiment is -1kw, which is not limited to this value in actual application; when the vehicle forced charging flag is set, the first vehicle forced charging power is the basic power of the vehicle forced charging.

[0028] The first vehicle forced charging power actually corresponds to the forced charging condition under normal driving condition of the vehicle, and the second vehicle forced charging power corresponds to the forced charging condition under abnormal driving condition or extreme mode of the vehicle, such as rapid driving, rapid increase of torque and the like. Because the demand for power output changes greatly, forced charging of the power battery needs to be considered.

[0029] When the vehicle forced charging flag is reset, the second vehicle forced charging power is a second set value, and the second set value of the embodiment is 0kw, which is not limited to this value in actual application. At this time, because the vehicle forced charging flag is reset, that is, the vehicle forced charging is not needed, and therefore the second vehicle forced charging power can be controlled to be 0.

[0030] When the vehicle forced charging sign is positioned, the vehicle forced charging power difference is calculated based on the vehicle forced charging basic power and the battery actual power in the running information, and the specific calculation method is: vehicle forced charging power difference = vehicle forced charging basic power - battery actual power; The vehicle forced charging power integral basic value is obtained based on the vehicle forced charging power difference, and the vehicle forced charging power integral basic value is obtained by querying table three: Table three: correspondence table of vehicle forced charging power difference and vehicle forced charging power integral basic value The vehicle forced charging power integral basic value is integrated to obtain the second vehicle forced charging power, and the specific calculation method is: Second vehicle forced charging power = min{max{∑{(vehicle forced charging power integral basic value), Pmin}, Pmax}, Pmin and Pmax are the power lower limit and the power upper limit, which are obtained by calibration.

[0031] S24, the sum of the first vehicle forced charging and the second vehicle forced charging power is taken as the theoretical vehicle forced charging power; That is, the theoretical vehicle forced charging power = first vehicle forced charging + second vehicle forced charging power.

[0032] S25, the engine demand power generation power is determined based on the theoretical vehicle forced charging power and the engine basic power generation power; That is, the engine demand power generation power = engine basic power generation power + min{theoretical vehicle forced charging power, 0}, first calculate the smaller value of the theoretical vehicle forced charging power and 0, then calculate the sum of the smaller value and the engine basic power generation power, that is, the required engine demand power generation power; Thus, the engine demand power generation power of the extended-range electric vehicle is obtained.

[0033] In some embodiments of the present application, the step S3 described above is optimized, and specifically, as shown in Figure 1 The following steps can be performed: S31, determine the SOC maximum allowable discharge power based on the battery power difference; The battery power difference is obtained in the manner described above, and then table four is queried based on the battery power difference: Table four: correspondence table of battery power difference and SOC maximum allowable discharge power The SOC maximum allowable discharge power is obtained.

[0034] S32, calculate the generator end output power; The smaller value between the difference between the actual power generation of the generator and the theoretical forced charging power of the whole vehicle and 0 is taken as the output power at the generator end, that is, the output power at the generator end = min{ (the actual power generation of the generator - the theoretical forced charging power of the whole vehicle), 0}; S33, calculating the maximum allowed output power of the whole vehicle; The sum of the smaller value between the maximum allowed discharging power of the BMS and the maximum allowed discharging power of the SOC and the output power at the generator end is taken as the maximum allowed output power of the whole vehicle. That is, the maximum allowed output power of the whole vehicle = min{the maximum allowed discharging power of the BMS, the maximum allowed discharging power of the SOC} + the output power at the generator end, Thus, the maximum allowed output power of the whole vehicle of the extended-range electric vehicle is obtained.

[0035] In application, the engine, the power battery and the generator of the whole vehicle can be controlled according to the above-mentioned engine required power generation and the maximum allowed output power of the whole vehicle.

[0036] In addition, the application also relates to a control system of an extended-range electric vehicle, which comprises a running information acquisition module, a basic power determination module, a flag acquisition module, a forced charging power calculation module, a required power generation calculation module and an allowed output power calculation module. The running information acquisition module is used to acquire running information of the extended-range electric vehicle. The basic power determination module obtains the basic forced charging power of the whole vehicle based on the running information. The flag acquisition module calculates the forced charging flag of the whole vehicle according to the basic forced charging power of the whole vehicle. The forced charging power calculation module determines the first forced charging power of the whole vehicle in the normal mode and the second forced charging power of the whole vehicle in the extreme mode according to the forced charging flag of the whole vehicle, and takes the sum of the first forced charging power and the second forced charging power as the theoretical forced charging power of the whole vehicle. The required power generation calculation module determines the engine required power generation based on the theoretical forced charging power of the whole vehicle and the basic power generation of the engine. The allowed output power calculation module determines the maximum allowed output power of the whole vehicle based on the theoretical forced charging power of the whole vehicle, the actual power generation of the generator and the running information.

[0037] The application provides an extended-range electric vehicle control device, which comprises at least one processor and a memory in communication connection with the at least one processor. The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the extended-range electric vehicle control method in the above-mentioned embodiments.

[0038] Reference will be made to the accompanying drawings Figure 2This document illustrates a structural schematic diagram of a range-extended electric vehicle control device suitable for implementing embodiments of this application. The range-extended electric vehicle control device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 2 The range-extended electric vehicle control device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0039] like Figure 2 As shown, the range-extended electric vehicle control device may include a processing unit 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 1002 or a program loaded from storage device 1003 into random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the range-extended electric vehicle control device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. Communication device 1009 allows the range-extended electric vehicle control device to communicate wirelessly or wiredly with other devices to exchange data. Although a range-extended electric vehicle control device with various systems is shown in the figure, it should be understood that it is not required to implement or possess all the systems shown. More or fewer systems may be implemented alternatively.

[0040] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program codes for executing the method shown in the flowchart. In such embodiments, the computer program can be downloaded and installed from a network through a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiments disclosed in the present application are executed.

[0041] The range-extended electric vehicle control device provided by the present application adopts the range-extended electric vehicle control method in the above-mentioned embodiments, and can solve the technical problem of range-extended electric vehicle control. Compared with the prior art, the range-extended electric vehicle control device provided by the present application has the same beneficial effects as the range-extended electric vehicle control method provided by the above-mentioned embodiments, and other technical features in the range-extended electric vehicle control device are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0042] It should be understood that various parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the description of the above-mentioned embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0044] The present application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e. computer program) for executing the range-extended electric vehicle control method in the above-mentioned embodiments.

[0045] The computer readable storage medium provided in the application may be, for example, a U disk, but is not limited to an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination of the above. More specific examples of the computer readable storage medium may include, but are not limited to, an electric connection with one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the embodiment, the computer readable storage medium may be any tangible medium containing or storing a program that can be used or combined with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted by any suitable medium, including but not limited to an electric wire, an optical cable, an RF (Radio Frequency), and the like, or any suitable combination of the above.

[0046] The above computer readable storage medium may be contained in the range extended electric vehicle control device, or may exist separately without being assembled into the range extended electric vehicle control device.

[0047] The above computer readable storage medium carries one or more programs, when the one or more programs are executed by the range extended electric vehicle control device, the range extended electric vehicle control device: collects range extended electric vehicle operation information; obtains a basic power of a vehicle forced charging based on the operation information; calculates a vehicle forced charging flag based on the basic power of the vehicle forced charging; determines a first vehicle forced charging power in a normal mode and a second vehicle forced charging power in an extreme mode based on the vehicle forced charging flag; takes a sum of the first vehicle forced charging power and the second vehicle forced charging power as a theoretical vehicle forced charging power; determines an engine required power generation power based on the theoretical vehicle forced charging power and an engine basic power generation power; and determines a maximum vehicle output power based on the theoretical vehicle forced charging power, an actual power generation power of the power generator, and the operation information.

[0048] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.

[0049] In the case of implementing the present application using a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0050] The flow diagrams and the block diagrams in the drawings are illustrations of architectures, functionalities, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may

[0051] The modules involved in the embodiments of the present application can be implemented in the form of software or in the form of hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0052] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e., computer programs) for executing the above-mentioned extended-range electric vehicle control method, and can solve the technical problems. Compared with the prior art, the computer readable storage medium provided by the present application has the same beneficial effects as the extended-range electric vehicle control method provided by the above-mentioned embodiments, which will not be described here.

[0053] The application further provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the range-extending electric vehicle control method as described above.

[0054] The computer program product provided by the application can solve the technical problem. Compared with the prior art, the beneficial effects of the computer program product provided by the application are the same as those of the range-extending electric vehicle control method provided by the above-described embodiments, and are not described here.

[0055] The basic principles, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited to the above-described embodiments, and the above-described embodiments and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A control method of a range extended electric vehicle, characterized by: The method comprises: Collecting extended-range electric vehicle operation information; Obtaining basic vehicle forced charging power based on the operation information; Calculating vehicle forced charging flag based on the basic vehicle forced charging power; Determining first vehicle forced charging power in normal mode and second vehicle forced charging power in extreme mode based on the vehicle forced charging flag; Taking the sum of the first vehicle forced charging power and the second vehicle forced charging power as theoretical vehicle forced charging power; Determining engine required power generation power based on the theoretical vehicle forced charging power and engine basic power generation power; Determining maximum vehicle allowed output power based on the theoretical vehicle forced charging power, generator actual power generation power and operation information.

2. The control method of the extended-range electric vehicle according to claim 1, characterized by: The method for obtaining basic vehicle forced charging power based on operation information comprises: determining battery minimum target power based on the ambient temperature signal in the operation information; determining battery power difference value based on the battery power and the battery minimum target power; determining the basic vehicle forced charging power based on the battery power difference value.

3. The control method of the extended-range electric vehicle according to claim 1, characterized by: The method for calculating vehicle forced charging flag based on the basic vehicle forced charging power comprises: when the basic vehicle forced charging power is less than 0, the vehicle forced charging flag is set to 1, otherwise the vehicle forced charging flag is reset to 0.

4. The control method of the extended-range electric vehicle according to claim 1, wherein: The method for determining the first vehicle forced charging power in normal mode based on the vehicle forced charging flag comprises: when the vehicle forced charging flag is reset to 0, the first vehicle forced charging power is a first set value; when the vehicle forced charging flag is set to 1, the first vehicle forced charging power is the basic vehicle forced charging power.

5. The control method of the extended-range electric vehicle according to claim 1, wherein: The method for determining the second vehicle forced charging power in extreme mode based on the vehicle forced charging flag comprises: when the vehicle forced charging flag is reset to 0, the second vehicle forced charging power is a second set value; when the vehicle forced charging flag is set to 1, calculating vehicle forced charging power difference value based on the basic vehicle forced charging power and the battery actual power in the operation information, obtaining vehicle forced charging power integral base value based on the vehicle forced charging power difference value, and integrating the vehicle forced charging power integral base value to obtain the second vehicle forced charging power.

6. The control method of the extended-range electric vehicle according to claim 1, wherein: The method for determining engine required power generation power based on the theoretical vehicle forced charging power and engine basic power generation power comprises: taking the sum of the smaller value between the theoretical vehicle forced charging power and 0 and the engine basic power generation power as the engine required power generation power.

7. The control method of the extended-range electric vehicle according to claim 2, wherein: The method for determining maximum vehicle allowed output power based on the theoretical vehicle forced charging power, generator actual power generation power and operation information comprises: determining SOC maximum allowed discharge power based on the battery power difference value; taking the smaller value between the difference value between the generator actual power generation power and the theoretical vehicle forced charging power and 0 as generator end output power; and taking the sum of the smaller value between the BMS maximum allowed discharge power and the SOC maximum allowed discharge power and the generator end output power as the maximum vehicle allowed output power.

8. A range extended electric vehicle control system, characterized in that: The control system follows the control method of the extended-range electric vehicle as claimed in any one of claims 1-7, comprising, An operation information collection module is configured to collect operation information of the extended-range electric vehicle. A basic power determination module is configured to obtain a basic power of forced charging of the whole vehicle based on the operation information. A flag bit acquisition module is configured to calculate a flag bit of forced charging of the whole vehicle according to the basic power of forced charging of the whole vehicle. A forced charging power calculation module is configured to determine a first forced charging power of the whole vehicle in a normal mode and a second forced charging power of the whole vehicle in an extreme mode according to the flag bit of forced charging of the whole vehicle, and to determine a theoretical forced charging power of the whole vehicle as a sum of the first forced charging power and the second forced charging power. A demand power generation calculation module is configured to determine a demand power generation of the engine based on the theoretical forced charging power of the whole vehicle and a basic power generation of the engine. An allowed output power calculation module is configured to determine a maximum allowed output power of the whole vehicle based on the theoretical forced charging power of the whole vehicle, an actual power generation of the generator and the operation information.

9. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program. The computer program is executed by the processor to implement the steps of the control method of the extended-range electric vehicle according to any one of claims 1-7.

10. A computer program product, characterised in that, The computer program product includes a computer program. The computer program is executed by the processor to implement the steps of the control method of the extended-range electric vehicle according to any one of claims 1-7.

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