Mode switching method and apparatus, electronic device, and storage medium

Abstract

The application discloses a mode switching method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring power system data of a current vehicle, wherein the power system data of the current vehicle comprises engine data, generator data, driving motor data and battery data; determining a system series-parallel connection capability parameter based on the engine data, the generator data, the driving motor data and the battery data, wherein the system series-parallel connection capability parameter comprises a system series connection capability parameter and a system parallel connection capability parameter; and switching a system working mode of the current vehicle to a target working mode based on the system series connection capability parameter and the system parallel connection capability parameter. The above technical solution improves the accuracy of the series-parallel connection capability parameter by adding the generator data, the driving motor data and the battery data, so that the system working mode is switched to a more reasonable working mode, and the driving demand is met.

Description

Technical Field

[0001] This invention relates to the field of intelligent driving technology, and in particular to a mode switching method, device, electronic device, and storage medium. Background Technology

[0002] For series-parallel hybrid electric vehicles, it is necessary to calculate the series and parallel capabilities of the power system. When the driver has a high torque demand, the power system mode can be switched (series to parallel or parallel to series) based on the two capabilities, so that the power system mode meets the driver's needs.

[0003] Currently, the calculation of the series-parallel capability of power systems is basically based on the engine's current capabilities (speed, torque), which makes the calculation of series-parallel capability inaccurate, resulting in unreasonable system mode switching. Summary of the Invention

[0004] This invention provides a mode switching method, device, electronic device, and storage medium to improve the accuracy of series and parallel connection capability parameters, thereby switching the system operating mode to a more reasonable operating mode to meet driving needs.

[0005] According to one aspect of the present invention, a mode switching method is provided, comprising:

[0006] Obtain the powertrain data of the current vehicle, wherein the powertrain data of the current vehicle includes engine data, generator data, drive motor data and battery data;

[0007] The system series-parallel capability parameters are determined based on the engine data, the generator data, the drive motor data, and the battery data, wherein the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters;

[0008] Based on the system series capability parameters and the system parallel capability parameters, the current system operating mode of the vehicle is switched to the target operating mode.

[0009] According to another aspect of the present invention, a mode switching device is provided, comprising:

[0010] The data acquisition module is used to acquire the power system data of the current vehicle, wherein the power system data of the current vehicle includes engine data, generator data, drive motor data and battery data;

[0011] A series-parallel capability determination module is used to determine system series-parallel capability parameters based on the engine data, the generator data, the drive motor data, and the battery data, wherein the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters;

[0012] The operating mode switching module is used to switch the current system operating mode of the vehicle to the target operating mode based on the system series capability parameters and the system parallel capability parameters.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] At least one processor; and

[0015] A memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the mode switching method described in any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the mode switching method described in any embodiment of the present invention.

[0018] The technical solution of this invention acquires the powertrain data of the current vehicle, including engine data, generator data, drive motor data, and battery data; determines the system series capability parameters and system parallel capability parameters based on the engine data, generator data, drive motor data, and battery data; and switches the current vehicle's system operating mode to a target operating mode based on the system series capability parameters and system parallel capability parameters. This technical solution improves the accuracy of the series and parallel capability parameters by adding generator data, drive motor data, and battery data, thereby switching the system operating mode to a more reasonable operating mode to meet driving needs.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the vehicle power system that implements the mode switching method of the present invention.

[0022] Figure 2 This is a flowchart of a mode switching method provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a flowchart of a mode switching method provided in Embodiment 2 of the present invention;

[0024] Figure 4 This is an engine external characteristic curve provided according to Embodiment 2 of the present invention;

[0025] Figure 5 This is a flowchart of a mode switching method provided in Embodiment 3 of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of a mode switching device according to Embodiment 4 of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of an electronic device that implements the mode switching method of the present invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Before introducing specific implementation methods, let's introduce the vehicle power system that implements the mode switching method. Figure 1This is a schematic diagram of the vehicle powertrain system implementing the mode switching method of this embodiment of the invention. The vehicle powertrain system includes a battery management system (BMS), a hybrid control unit (HCU), motor control units (MCU1 and MCU2), motor inverters (INV1 and INV2), an engine management system (EMS), a drive motor, a generator, an engine, a coupling clutch, and a battery. Figure 1 As shown, the battery management system, hybrid control unit, motor control unit, and engine management system are connected via CAN communication. The battery management system is electrically connected to the battery (12V), MCU1 is electrically connected to INV1 (12V), MCU2 is electrically connected to INV2 (12V), and the battery is electrically connected to INV1 and INV2 (high-voltage). INV1 is electrically connected to the drive motor (high-voltage), and INV2 is electrically connected to the generator (high-voltage).

[0031] Example 1

[0032] Figure 2 This is a flowchart of a mode switching method provided in Embodiment 1 of the present invention. This embodiment is applicable to the automatic switching of vehicle operating modes. The method can be executed by a mode switching device, which can be implemented in hardware and / or software and can be configured in an in-vehicle terminal. Figure 2 As shown, the method includes:

[0033] S110. Obtain the power system data of the current vehicle, wherein the power system data of the current vehicle includes engine data, generator data, drive motor data and battery data.

[0034] In this embodiment, powertrain data refers to relevant parameters of the vehicle's powertrain operation, which may include, but are not limited to, engine data, generator data, drive motor data, and battery data. Engine data refers to operating parameters associated with the engine. Generator data refers to operating parameters associated with the generator. Drive motor data refers to operating parameters associated with the drive motor. Battery data refers to operating parameters associated with the battery.

[0035] For example, powertrain data can be obtained in real time by sensors installed on the vehicle, retrieved from a preset storage path, or calculated from collected data; no limitation is made here.

[0036] S120. Based on the engine data, the generator data, the drive motor data, and the battery data, determine the system series-parallel capability parameters, wherein the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters.

[0037] In this embodiment, the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters. The system series capability parameter refers to the maximum torque provided by the system to the wheels in the series working mode, and the system parallel capability parameter refers to the maximum torque provided by the system to the wheels in the parallel working mode.

[0038] Specifically, engine data, generator data, drive motor data, and battery data can be substituted into a pre-configured calculation model to obtain system series capability parameters and system parallel capability parameters.

[0039] S130. Based on the system series capability parameters and the system parallel capability parameters, switch the current vehicle's system operating mode to the target operating mode.

[0040] The target operating mode can be either a series operating mode or a parallel operating mode.

[0041] For example, if the system series capability parameter is better than the system parallel capability parameter, the current vehicle's system operating mode is switched to the series operating mode; if the system parallel capability parameter is better than the system series capability parameter, the current vehicle's system operating mode is switched to the parallel operating mode, so that the current vehicle is in the optimal operating mode.

[0042] The technical solution of this invention improves the accuracy of series and parallel connection capability parameters by adding generator data, drive motor data, and battery data, thereby switching the system operating mode to a more reasonable operating mode to meet driving needs.

[0043] Example 2

[0044] Figure 3 This is a flowchart of a mode switching method provided in Embodiment 2 of the present invention. The method of this embodiment can be combined with various optional schemes in the mode switching methods provided in the above embodiments. The mode switching method provided in this embodiment has been further optimized. Optionally, determining the system series-parallel capability parameters based on the engine data, the generator data, the drive motor data, and the battery data includes: determining the forced charging power and the corrected discharge power of the power battery based on the battery data; and determining the system series-parallel capability parameters based on the engine data, the generator data, the drive motor data, the forced charging power of the power battery, and the corrected discharge power of the power battery.

[0045] like Figure 3 As shown, the method includes:

[0046] S210. Obtain the powertrain data of the current vehicle, wherein the powertrain data of the current vehicle includes engine data, generator data, drive motor data and battery data.

[0047] S220. Based on the battery data, determine the forced charging power of the power battery and the corrected discharge power of the power battery.

[0048] Among them, the forced charging power of the power battery refers to the charging power under forced limiting conditions. The corrected discharge power of the power battery refers to the power parameter after the battery charging power has been corrected.

[0049] In some optional implementations, the battery data includes the state of charge of the power battery, the forced charging threshold of the power battery, and the maximum discharge power of the power battery; correspondingly, determining the forced charging power and the corrected discharge power of the power battery based on the battery data includes: determining the battery charging difference based on the state of charge of the power battery and the forced charging threshold of the power battery; determining the forced charging power of the power battery based on the battery charging difference; and determining the corrected discharge power of the power battery based on the battery charging difference and the maximum discharge power of the power battery.

[0050] Here, "Power Battery State of Charge" refers to the battery's state of charge (SOC). "Forced Charging Threshold" refers to a pre-set charging threshold value. "Maximum Discharge Power" refers to the battery's maximum discharge power. "Battery Charging Difference" refers to the difference between the power battery's state of charge and its forced charging threshold.

[0051] For example, the charging state of the power battery can be subtracted from the forced charging threshold of the power battery to obtain the battery charging difference value. Then, the battery charging difference value can be matched in the data table to obtain the forced charging power or the corrected discharge power of the power battery.

[0052] S230. Based on the engine data, the generator data, the drive motor data, the forced charging power of the power battery, and the corrected discharge power of the power battery, determine the system series capability parameters and the system parallel capability parameters.

[0053] It is understood that in determining the system series capability parameters and the system parallel capability parameters, this embodiment takes into account the forced charging power of the power battery and the corrected discharge power of the power battery, so that the determined system series and parallel capability parameters are more accurate.

[0054] S240. Based on the system series capability parameters and the system parallel capability parameters, switch the current vehicle's system operating mode to the target operating mode.

[0055] In some optional implementations, determining the forced charging power of the power battery based on the battery charging difference includes: matching the battery charging difference in a first data table with a preset configuration to obtain the forced charging power of the power battery.

[0056] The first data table refers to the data table that contains the mapping relationship between battery charging difference and forced charging power of power battery.

[0057] For example, the first data table is shown in Table 1.

[0058] Table 1

[0059]

[0060] In some optional implementations, determining the corrected discharge power of the power battery based on the battery charging difference and the maximum discharge power of the power battery includes: matching the battery charging difference in a preset configured second data table to obtain power correction parameters; and determining the corrected discharge power of the power battery based on the maximum discharge power of the power battery and the power correction parameters.

[0061] The second data table contains the mapping relationship between battery charging differential and power correction parameters. Power correction parameters are adjustment parameters used to correct battery discharge power.

[0062] For example, the second data table is shown in Table 2. The calculated battery charging difference is matched with the second data table to obtain the corresponding power correction parameter. The power correction parameter is multiplied by the maximum discharge power of the power battery to obtain the corrected discharge power of the power battery.

[0063] Table 2

[0064]

[0065] In some optional implementations, the generator data includes generator speed and maximum generator torque, and the drive motor data includes system input motor speed and maximum drive torque. Correspondingly, the system series-parallel capability parameters are determined based on engine data, generator data, drive motor data, forced charging power of the power battery, and corrected discharge power of the power battery. This includes: determining the system series capability parameters based on engine data, maximum generator torque, generator speed, corrected discharge power of the power battery, forced charging power of the power battery, maximum drive torque of the motor, and system input motor speed; and determining the system parallel capability parameters based on system input motor speed, corrected discharge power of the power battery, maximum drive torque of the motor, and forced charging power of the power battery.

[0066] Specifically, by substituting engine data, generator maximum generating torque, generator speed, power battery corrected discharge power, power battery forced charging power, motor maximum driving torque, and system input motor speed into the system series capability formula, the system series capability parameters are obtained. Similarly, by substituting system input motor speed, power battery corrected discharge power, motor maximum driving torque, and power battery forced charging power into the system parallel capability formula, the system parallel capability parameters are obtained.

[0067] For example, the formula for system series capability is as follows:

[0068] PTCpSE=min(min(EngMaxPwr,GMMaxGenTrq*GMSpd / 9550)+BatDisChrgPwrRevised-BatFrcChrgPwr,TMmaxDrvTrq*TMspd / 9550).

[0069] Wherein, PTCpSE represents the system series capability parameter; EngMaxPwr represents the engine data, which can be the engine's maximum power; GMMaxGenTrq represents the generator's maximum generating torque; GMSpd represents the generator speed; BatDisChrgPwrRevised represents the power battery's corrected discharge power; BatFrcChrgPwr represents the power battery's forced charging power; TMmaxDrvTrq represents the motor's maximum driving torque; and TMspd represents the system's input motor speed.

[0070] The formula for the system's parallel capacity is as follows:

[0071] TMspdEng = TMspd / R1 * R2;

[0072] PTCpPL=TMspdEng*EngMaxTqPL / 9550+min(BatDisChrgPwrRevised,TMmaxDrvTrq*TMspd / 9550)-BatFrcChrgPwr.

[0073] Where R1 is the reduction ratio from the drive motor to the wheel end, R2 is the reduction ratio from the engine to the wheel end, TMspd represents the system input motor speed, and TMspdEng represents the parameters after the drive motor speed is converted to the engine end. Then, the maximum engine torque (EngMaxTqPL) at the current virtual engine speed can be obtained by looking up a table using TMspdEng. The table looked up by TMspdEng is as follows: Figure 4The table shown is a graph of the engine's external characteristics. PTCpPL represents the system's parallel capability parameter; BatDisChrgPwrRevised represents the corrected discharge power of the power battery; TMmaxDrvTrq represents the maximum drive torque capability of the motor; and BatFrcChrgPwr represents the forced charging power of the power battery.

[0074] The technical solution of this invention improves the accuracy of series and parallel connection capability parameters by increasing the forced charging power and the corrected discharge power of the power battery, thereby switching the system working mode to a more reasonable working mode to meet driving needs.

[0075] Example 3

[0076] Figure 5 This is a flowchart of a mode switching method provided in Embodiment 3 of the present invention. The method of this embodiment can be combined with various optional schemes in the mode switching methods provided in the above embodiments. The mode switching method provided in this embodiment has been further optimized. Optionally, the target operating mode includes a series operating mode and a parallel operating mode; correspondingly, the step of switching the current vehicle's system operating mode to the target operating mode based on the system series capability parameter and the system parallel capability parameter includes: comparing the system series capability parameter and the system parallel capability parameter to obtain a comparison result, wherein the comparison result includes the system series capability being better than the system parallel capability or the system parallel capability being better than the system series capability; if the comparison result is that the system series capability is better than the system parallel capability, then the current vehicle's system operating mode is switched to the series operating mode; if the comparison result is that the system parallel capability is better than the system series capability, then the current vehicle's system operating mode is switched to the parallel operating mode.

[0077] like Figure 5 As shown, the method includes:

[0078] S310. Obtain the powertrain data of the current vehicle, wherein the powertrain data of the current vehicle includes engine data, generator data, drive motor data and battery data.

[0079] S320. Based on the engine data, the generator data, the drive motor data, and the battery data, determine the system series-parallel capability parameters, wherein the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters.

[0080] S330. Compare the system series capability parameter with the system parallel capability parameter to obtain a comparison result, wherein the comparison result includes the system series capability being better than the system parallel capability or the system parallel capability being better than the system series capability.

[0081] S340. If the comparison result shows that the system's series capability is better than the system's parallel capability, then the current vehicle's system operating mode is switched to the series operating mode.

[0082] S350. If the comparison result shows that the parallel capability of the system is better than the series capability of the system, then the system operating mode of the current vehicle is switched to the parallel operating mode.

[0083] For example, if PTCpPL > PTCpSE + Gap1, it indicates that the system's series capability is better than its parallel capability, and the current vehicle's system operating mode is switched to series operating mode; if PTCpSE > PTCpPL + Gap1, it indicates that the system's parallel capability is better than its series capability, and the current vehicle's system operating mode is switched to parallel operating mode. Here, Gap1 is a pre-configured adjustment parameter that prevents frequent changes in the system operating mode.

[0084] The technical solution of this invention compares the system series capability parameter with the system parallel capability parameter to obtain a comparison result. The comparison result includes whether the system series capability is better than the system parallel capability or vice versa. If the comparison result is that the system series capability is better than the system parallel capability, the current vehicle system operating mode is switched to the series operating mode. If the comparison result is that the system parallel capability is better than the system series capability, the current vehicle system operating mode is switched to the parallel operating mode. This achieves a reasonable switching of the system operating mode and meets driving needs.

[0085] Example 4

[0086] Figure 6 This is a schematic diagram of a mode switching device provided in Embodiment 4 of the present invention. Figure 6 As shown, the device includes:

[0087] The data acquisition module 410 is used to acquire the power system data of the current vehicle, wherein the power system data of the current vehicle includes engine data, generator data, drive motor data and battery data;

[0088] The series-parallel capability determination module 420 is used to determine the system series-parallel capability parameters based on the engine data, the generator data, the drive motor data and the battery data, wherein the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters;

[0089] The working mode switching module 430 is used to switch the current system working mode of the vehicle to the target working mode based on the system series capability parameters and the system parallel capability parameters.

[0090] The technical solution of this invention improves the accuracy of series and parallel connection capability parameters by adding generator data, drive motor data, and battery data, thereby switching the system operating mode to a more reasonable operating mode to meet driving needs.

[0091] In some alternative implementations, the series-parallel capability determination module 420 includes:

[0092] A charge / discharge power determination unit is used to determine the forced charging power and the corrected discharging power of the power battery based on the battery data.

[0093] The series-parallel capability determination unit is used to determine the system series-parallel capability parameters based on the engine data, the generator data, the drive motor data, the forced charging power of the power battery, and the corrected discharge power of the power battery.

[0094] In some optional implementations, the battery data includes the power battery charging state, the power battery forced charging threshold, and the power battery maximum discharge power; correspondingly, the charge / discharge power determination unit includes:

[0095] The battery charging difference determination subunit is used to determine the battery charging difference based on the power battery charging state and the power battery forced charging threshold;

[0096] A charging power determination subunit is used to determine the forced charging power of the power battery based on the battery charging difference.

[0097] The discharge power determination subunit is used to determine the corrected discharge power of the power battery based on the battery charging difference and the maximum discharge power of the power battery.

[0098] In some alternative implementations, the charging power determination subunit is specifically used for:

[0099] The battery charging difference is matched with a first data table in a preset configuration to obtain the forced charging power of the power battery.

[0100] In some alternative implementations, the discharge power determination subunit is specifically used for:

[0101] The battery charging difference is matched with a preset second data table to obtain power correction parameters;

[0102] The corrected discharge power of the power battery is determined based on the maximum discharge power of the power battery and the power correction parameters.

[0103] In some optional implementations, the generator data includes generator speed and generator maximum generating torque, and the drive motor data includes system input motor speed and motor maximum driving torque;

[0104] The series-parallel capability determination unit is specifically used for:

[0105] The system series capability parameters are determined based on the engine data, the generator's maximum generating torque, the generator's speed, the power battery's corrected discharge power, the power battery's forced charging power, the motor's maximum driving torque, and the system input motor speed.

[0106] The system parallel capability parameters are determined based on the system input motor speed, the power battery corrected discharge power, the motor maximum driving torque capability, and the power battery forced charging power.

[0107] In some optional implementations, the target operating mode includes a series operating mode and a parallel operating mode; the operating mode switching module 430 is specifically used for:

[0108] The system series capability parameter is compared with the system parallel capability parameter to obtain a comparison result, wherein the comparison result includes the system series capability being better than the system parallel capability or the system parallel capability being better than the system series capability.

[0109] If the comparison result shows that the system's series capability is better than the system's parallel capability, then the current vehicle's system operating mode is switched to series operating mode.

[0110] If the comparison result shows that the system's parallel capability is better than the system's series capability, then the current vehicle's system operating mode is switched to parallel operating mode.

[0111] The mode switching device provided in the embodiments of the present invention can execute the mode switching method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method execution.

[0112] Example 5

[0113] Figure 7 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0114] like Figure 7As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0115] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0116] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the mode switching method, which includes:

[0117] Obtain the powertrain data of the current vehicle, wherein the powertrain data of the current vehicle includes engine data, generator data, drive motor data and battery data;

[0118] The system series-parallel capability parameters are determined based on the engine data, the generator data, the drive motor data, and the battery data, wherein the system series-parallel capability parameters include system series capability parameters and system parallel capability parameters;

[0119] Based on the system series capability parameters and the system parallel capability parameters, the current system operating mode of the vehicle is switched to the target operating mode.

[0120] In some embodiments, the mode switching method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the mode switching method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the mode switching method by any other suitable means (e.g., by means of firmware).

[0121] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0122] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0123] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0124] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0125] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0126] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0127] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0128] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A mode switching method, characterized by, The method comprises the following steps: acquiring power system data of a current vehicle, wherein the power system data of the current vehicle comprises engine data, generator data, drive motor data and battery data; determining a system series-parallel capability parameter based on the engine data, the generator data, the drive motor data and the battery data, wherein the system series-parallel capability parameter comprises a system series capability parameter and a system parallel capability parameter, the system series capability parameter refers to the maximum torque provided by the system to the wheels in a series working mode, and the system parallel capability parameter refers to the maximum torque provided by the system to the wheels in a parallel working mode; the process of determining the system series-parallel capability parameter comprises: the system series capability formula is as follows: PTCpSE=min(min(EngMaxPwr,GMMaxGenTrq*GMSpd / 9550)+BatDisChrgPwrRevised-BatFrcChrgPwr,TMmaxDrvTrq*TMspd / 9550); wherein PTCpSE represents the system series capability parameter, EngMaxPwr represents the engine data, which is the maximum power of the engine, GMMaxGenTrq represents the maximum generation torque of the generator, GMSpd represents the generator speed, BatDisChrgPwrRevised represents the revised discharging power of the power battery, BatFrcChrgPwr represents the forced charging power of the power battery, and TMmaxDrvTrq represents the maximum drive torque of the motor; and TMspd represents the system input motor speed; the system parallel capability formula is as follows: TMspdEng=TMspd / R1*R2; PTCpPL=TMspdEng*EngMaxTqPL / 9550+min(BatDisChrgPwrRevised,TMmaxDrvTrq*TMspd / 9550)-BatFrcChrgPwr; wherein R1 is the reduction ratio of the drive motor to the wheel end, R2 is the reduction ratio of the engine to the wheel end, TMspd represents the system input motor speed, TMspdEng represents the parameter of the drive motor speed converted to the engine end, EngMaxTqPL is the maximum torque of the engine at the current virtual engine speed obtained by looking up the table according to TMspdEng, PTCpPL represents the system parallel capability parameter, BatDisChrgPwrRevised represents the revised discharging power of the power battery, TMmaxDrvTrq represents the maximum drive torque capability of the motor, and BatFrcChrgPwr represents the forced charging power of the power battery; the process of switching the system working mode of the current vehicle to a target working mode based on the system series capability parameter and the system parallel capability parameter comprises: if PTCpPL>PTCpSE+Gap1, it indicates that the system series capability is superior to the system parallel capability, and the system working mode of the current vehicle is switched to the series working mode. If PTCpSE>PTCpPL+Gap1, it indicates that the parallel capability of the system is superior to the series capability of the system, and the system operating mode of the current vehicle is switched to the parallel operating mode; Wherein, Gap1 is a pre-configured adjustment parameter.

2. The method of claim 1, wherein, The system series-parallel capability parameter is determined based on the engine data, the generator data, the drive motor data and the battery data, including: The battery data includes the state of charge of the power battery, the forced charging threshold of the power battery and the maximum discharge power of the power battery; The system series-parallel capability parameter is determined based on the engine data, the generator data, the drive motor data, the forced charging power of the power battery and the corrected discharge power of the power battery.

3. The method of claim 2, wherein, The battery data includes the state of charge of the power battery, the forced charging threshold of the power battery and the maximum discharge power of the power battery; Correspondingly, the forced charging power of the power battery and the corrected discharge power of the power battery are determined based on the battery data, including: The battery charging difference is determined based on the state of charge of the power battery and the forced charging threshold of the power battery; The forced charging power of the power battery is determined based on the battery charging difference; The corrected discharge power of the power battery is determined based on the battery charging difference and the maximum discharge power of the power battery.

4. The method of claim 3, wherein, The forced charging power of the power battery is determined based on the battery charging difference, including: The battery charging difference is matched in a pre-configured first data table to obtain the forced charging power of the power battery.

5. The method of claim 3, wherein, The corrected discharge power of the power battery is determined based on the battery charging difference and the maximum discharge power of the power battery, including: The battery charging difference is matched in a pre-configured second data table to obtain a power correction parameter; The corrected discharge power of the power battery is determined based on the maximum discharge power of the power battery and the power correction parameter.

6. The method of claim 2, wherein, The generator data includes the generator speed and the maximum generator power generation torque, and the drive motor data includes the system input motor speed and the maximum motor driving torque. Correspondingly, the system series-parallel capability parameter is determined based on the engine data, the generator data, the drive motor data, the forced charging power of the power battery and the corrected discharge power of the power battery, including: The system series-parallel capability parameter is determined based on the engine data, the generator maximum power generation torque, the generator speed, the power battery corrected discharge power, the power battery forced charging power, the motor maximum driving torque and the system input motor speed. The system series-parallel capability parameter is determined based on the system input motor speed, the power battery corrected discharge power, the motor maximum driving torque capability and the power battery forced charging power.

7. A mode switching device, characterized by It includes: A data acquisition module for acquiring power system data of a current vehicle, wherein the power system data of the current vehicle includes engine data, generator data, drive motor data and battery data; a series-parallel capability determination module configured to determine a system series-parallel capability parameter based on the engine data, the generator data, the drive motor data, and the battery data, wherein the system series-parallel capability parameter includes a system series capability parameter and a system parallel capability parameter, the system series capability parameter being a maximum torque provided by the system to the wheels in a series operation mode, and the system parallel capability parameter being a maximum torque provided by the system to the wheels in a parallel operation mode; a working mode switching module configured to switch the working mode of the system of the current vehicle to a target working mode based on the system series capability parameter and the system parallel capability parameter; the capability parameter determination module is configured to: the system series capability formula is as follows: PTCpSE = min(min(EngMaxPwr, GMMaxGenTrq * GMSpd / 9550) + BatDisChrgPwrRevised - BatFrcChrgPwr, TMmaxDrvTrq * TMspd / 9550); wherein PTCpSE represents the system series capability parameter, EngMaxPwr represents the engine data, which is the maximum power of the engine, GMMaxGenTrq represents the maximum power generation torque of the generator, GMSpd represents the generator speed, BatDisChrgPwrRevised represents the revised discharging power of the power battery, BatFrcChrgPwr represents the forced charging power of the power battery, and TMmaxDrvTrq represents the maximum driving torque of the motor; the system parallel capability formula is as follows: TMspdEng = TMspd / R1 * R2; PTCpPL = TMspdEng * EngMaxTqPL / 9550 + min(BatDisChrgPwrRevised, TMmaxDrvTrq * TMspd / 9550) - BatFrcChrgPwr; wherein R1 is a reduction ratio of the drive motor to the wheel end, R2 is a reduction ratio of the engine to the wheel end, TMspd represents the system input motor speed, TMspdEng represents a parameter of the drive motor speed converted to the engine end, EngMaxTqPL is the maximum torque of the engine at the current virtual engine speed obtained by looking up a table according to TMspdEng, PTCpPL represents the system parallel capability parameter, BatDisChrgPwrRevised represents the revised discharging power of the power battery, TMmaxDrvTrq represents the maximum driving torque capability of the motor, and BatFrcChrgPwr represents the forced charging power of the power battery; the working mode switching module is specifically configured to: if PTCpPL > PTCpSE + Gap1, it indicates that the system series capability is superior to the system parallel capability, and the working mode of the system of the current vehicle is switched to the series working mode. If PTCpSE>PTCpPL+Gap1, it indicates that the parallel connection capability of the system is superior to the series connection capability of the system, and the system working mode of the current vehicle is switched to the parallel connection working mode. Wherein, Gap1 is a pre-configured adjustment parameter.

8. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the mode switching method of any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to implement the mode switching method of any one of claims 1-6 when executed.

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