Range extender power control method and device, computer equipment and storage medium

Abstract

The invention relates to a range extender power control method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring original power of a current request and range extender power of an actual request; when the duration time of the range extender power reaches the power switching duration and the difference value between the original power and the range extender power is larger than the power switching step length, the range extender power is controlled to be updated according to the power switching step length. According to the method and the device, the power switching step length and the power switching duration are determined, the range extender power is kept stable in the power switching duration, updating is carried out according to the power switching step length, the range extender power actually requested can be controlled to be kept stable to the maximum extent, and the driving feeling of a driver is not affected.

Description

Technical Field

[0001] The present application relates to the technical field of range extenders, and in particular to a range extender power control method, device, computer equipment and storage medium. Background Art

[0002] In order to meet market demand, a large number of car companies have launched extended-range electric models. The range extender is one of the power sources of extended-range electric vehicles, providing electricity to the power battery of the electric vehicle. Extended-range electric vehicles can reduce or eliminate consumers' mileage anxiety about pure electric vehicles, and to a certain extent improve driving experience and overall fuel economy.

[0003] Currently, the range extender power is controlled at a fixed operating point based on the battery power SOC (State of Charge), or completely follows the drive power control request to the range extender power. However, these two solutions will affect the driving experience, or cause the range extender power to change frequently, affecting fuel consumption performance. Therefore, the current range extender power control solution cannot meet the driving and power control needs.

[0004] With regard to the problem in the related technology that the current range extender power control scheme cannot meet the driving and power control requirements, no effective solution has been proposed yet. Summary of the invention

[0005] Based on this, it is necessary to provide a range extender power control method, device, computer equipment and storage medium that can make the range extender power more stable and improve the driving experience in response to the above technical problems.

[0006] In a first aspect, a range extender power control method is provided in this embodiment, including:

[0007] Get the currently requested raw power and the actually requested range extender power;

[0008] When the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power is greater than the power switching step length, the range extender power is controlled to be updated with the power switching step length.

[0009] In some embodiments, the power switching step size and the power switching duration are determined according to the pedal change slope, the original power, the range extender power, the vehicle speed, and the pedal opening; the method further includes:

[0010] Determine the power switching step size and the power switching duration; the specific process includes:

[0011] Determining a first parameter according to the pedal change slope;

[0012] determining a second parameter according to a difference between the original power and the range extender power;

[0013] Determining a third parameter and a fourth parameter according to the vehicle speed;

[0014] determining a fifth parameter according to the range extender power;

[0015] determining a sixth parameter according to the pedal opening;

[0016] Determining the power switching step size according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter;

[0017] The power switching duration is determined according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter.

[0018] In some embodiments, determining the power switching step size according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter includes:

[0019] Adding the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter to obtain the power switching step size;

[0020] Alternatively, the power switching step length is obtained by multiplying the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter.

[0021] In some embodiments, determining the power switching duration according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter includes:

[0022] Adding the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter to obtain the power switching duration;

[0023] Alternatively, the power switching duration is obtained by multiplying the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter.

[0024] In some embodiments, the method further comprises:

[0025] The parameters corresponding to the pedal change slope, the difference between the original power and the range extender power, the range extender power, the vehicle speed, and the pedal opening are determined by looking up a preset table.

[0026] In some embodiments, the method further comprises:

[0027] The range extender power is updated to the original power with the power switching step size.

[0028] In some embodiments, the method further comprises:

[0029] Determine by timing whether the duration of the range extender power reaches the power switching duration;

[0030] When the duration of the range extender power reaches the power switching duration, the timing is restarted.

[0031] In a second aspect, a range extender power control device is provided in this embodiment, including:

[0032] An acquisition module, used to acquire the currently requested original power and the actually requested range extender power;

[0033] A control update module is used to control the range extender power update with the power switching step length when the duration of the range extender power reaches the power switching duration and the difference between the original power and the range extender power is greater than the power switching step length.

[0034] In a third aspect, a computer device is provided in this embodiment, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the range extender power control method described in the first aspect when executing the computer program.

[0035] In a fourth aspect, a storage medium is provided in this embodiment, on which a computer program is stored, and when the program is executed by a processor, the range extender power control method described in the first aspect is implemented.

[0036] Compared with the related art, the range extender power control method, device, computer equipment and storage medium provided in this embodiment obtain the currently requested original power and the actually requested range extender power; when the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power is greater than the power switching step length, the range extender power is updated by the power switching step length. Through this embodiment, the power switching step length and the power switching duration are determined, so that the range extender power remains stable within the power switching duration, and is updated with the power switching step length, which can control the actually requested range extender power to remain stable as much as possible without affecting the driver's driving experience.

[0037] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1 is a hardware structure block diagram of a terminal of a range extender power control method in an embodiment;

[0040] Figure 2 is a flow chart of a range extender power control method in one embodiment;

[0041] Figure 3 is a flow chart of a range extender power control method in another embodiment;

[0042] Figure 4 is a schematic diagram of a range extender power update process in one embodiment;

[0043] Figure 5 The figure is a structural block diagram of a range extender power control device in an embodiment.

[0044] In the figure: 102, processor; 104, memory; 106, transmission device; 108, input and output device; 10, acquisition module; 20, control update module. DETAILED DESCRIPTION

[0045] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0046] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0047] The method embodiment provided in this embodiment can be executed in a terminal, a computer or a similar computing device. For example, running on a terminal, Figure 1 is a hardware structure block diagram of a terminal of the range extender power control method of this embodiment. Figure 1 As shown, the terminal may include one or more ( Figure 1 Only one is shown in the figure) processor 102 and memory 104 for storing data, wherein processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0048] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the range extender power control method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0049] The transmission device 106 is used to receive or send data via a network. The above network includes a wireless network provided by the communication provider of the terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0050] In order to meet market demand, a large number of car companies have launched extended-range electric models. The range extender is one of the power sources of extended-range electric vehicles, providing electricity to the power battery of the electric vehicle. Extended-range electric vehicles can reduce or eliminate consumers' mileage anxiety about pure electric vehicles, and to a certain extent improve driving experience and overall fuel economy.

[0051] Currently, the range extender power is controlled at a fixed operating point based on the battery SOC (State of Charge), or it completely follows the drive power control request for the range extender power. However, in the former solution, the power battery pack will be frequently charged and discharged, resulting in a shortened battery life, excessive heat generation from the battery, increased thermal management power consumption, and the timing of the range extender start-up being inconsistent with the driver's needs, resulting in a strange driving experience; in the latter solution, the range extender power changes frequently, affecting fuel consumption performance. Therefore, the current range extender power control solution cannot meet driving and power control needs.

[0052] In this embodiment, a range extender power control method is provided, which is applied to a range extender of an electric vehicle. Figure 2 is a flow chart of the range extender power control method in this embodiment. Figure 2 As shown, the method comprises the following steps:

[0053] Step S201, obtaining the currently requested original power and the actually requested range extender power.

[0054] Specifically, the extended-range electric vehicle is equipped with a range extender, a drive motor, a high-voltage power battery, and related necessary high- and low-voltage conversion accessories. The range extender is composed of a traditional fuel engine and a starter-generator integrated motor. The currently requested original power refers to the original power requested by the driver in the power request signal sent to the vehicle power system at the front end by operating the accelerator pedal, etc. The actual requested range extender power refers to the range extender power that is ultimately required to be actually output by the range extender after adjusting and correcting the original power request according to certain control strategies and algorithms after considering the various actual operating conditions of the vehicle.

[0055] Step S202: When the duration of the range extender power reaches the power switching duration and the difference between the original power and the range extender power is greater than the power switching step length, the range extender power is updated by controlling the power switching step length.

[0056] Specifically, during driving, the original power request issued by the front end may change frequently, but when the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power is greater than the power switching step length, the range extender power update is controlled by the power switching step length, so that the range extender power is controlled to weakly follow the original power to avoid frequent changes in the range extender power. Among them, the power switching step length is used to indicate the rate of change of the range extender power update, and the power switching duration is used to indicate the time for the range extender power to remain stable.

[0057] When determining the power switching step and power switching duration, the vehicle's pedal change slope, vehicle speed, and pedal opening are obtained in real time. The pedal change slope reflects how fast the driver presses or releases the pedal. For example, when the accelerator pedal change rate is small, the requested original power changes within a certain range, and the actual requested range extender power may remain unchanged for a period of time; the vehicle speed reflects the speed of the vehicle driving speed. For example, when the vehicle speed is low, the actual requested range extender power can be maintained for a longer time; when the current requested original power changes significantly, the corresponding requested range extender power can change rapidly to ensure sufficient driving power; the pedal opening reflects the depth of the pedal, for example, the larger the pedal opening, the deeper the pedal is pressed, and the power switching step can be made smaller accordingly to ensure that the range extender power can be quickly switched during intense driving. According to the pedal change slope, original power, range extender power, vehicle speed, pedal opening, etc. in the vehicle state, the power switching step and power switching duration are determined in real time.

[0058] Through the above steps, the power switching step and power switching duration are determined according to the state of the whole vehicle, so that the power of the range extender remains stable within the power switching duration and is updated with the power switching step, the power of the range extender is controlled to weakly follow the original power, the frequency of power change of the range extender is reduced, the fuel consumption performance is optimized, the actual power consumption of the vehicle system is followed to the maximum extent, the frequency of charging and discharging current of the power battery pack is reduced, the battery life is maintained, and at the same time, the driver's needs are followed within a certain range, thereby enhancing the sense of communication between the driver and the vehicle during driving. The power of the range extender will be adaptively judged and updated according to the vehicle speed and the driver's acceleration intention and other states, which can meet the driving and power control needs.

[0059] In some of the embodiments, the power switching step size and the power switching duration are determined in real time according to the pedal change slope, the original power, the range extender power, the vehicle speed, and the pedal opening; the above method also includes:

[0060] Determine the power switching step and the power switching duration; the specific process includes: determining the first parameter according to the slope of the pedal change; determining the second parameter according to the difference between the original power and the range extender power; determining the third parameter and the fourth parameter according to the vehicle speed; determining the fifth parameter according to the range extender power; determining the sixth parameter according to the pedal opening; determining the power switching step according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter; determining the power switching duration according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter.

[0061] Specifically, the power switching step and power switching duration are determined in real time based on the pedal change slope, original power, range extender power, vehicle speed, pedal opening, etc. in the vehicle state. For the vehicle condition parameters such as the pedal change slope, the difference between the original power and the range extender power, vehicle speed, range extender power, and pedal opening that reflect the vehicle state, they have a corresponding relationship with the corresponding power retention parameters (for example, the first parameter to the sixth parameter), and the relationship between the vehicle condition parameters and the corresponding parameters can be obtained by calculating the relationship, looking up the preset table, etc.

[0062] In the embodiments, the parameters corresponding to the pedal change slope, the difference between the original power and the range extender power, the range extender power, the vehicle speed, and the pedal opening can be determined by searching a preset table. The preset table corresponding to each vehicle condition parameter stores the corresponding relationship between the vehicle condition parameter and the power retention parameter. Each vehicle condition parameter is matched with the corresponding preset table, and the power retention parameter corresponding to the vehicle condition parameter requirement is found from the preset table.

[0063] When the pedal change slope is a negative value, it means that the driver has released the accelerator pedal. The larger the absolute value of the change slope, the faster the accelerator pedal is released. When the pedal change slope is a positive value, it means that the driver has stepped on the accelerator pedal. The larger the change slope, the faster the accelerator pedal is stepped on. Correspondingly, the speed of the pedal change slope can be reflected by calculating the first parameter. For example, the following Table 1 shows a corresponding relationship between the first parameter and the pedal change slope.

[0064] Table 1

[0065]

[0066] In each interval of the pedal change slope in Table 1, the pedal change slope and the first parameter are in a linear relationship. For example, in the interval from 0 to 50, the first parameter decreases linearly from 1 to 0.8 accordingly.

[0067] The second parameter is calculated based on the difference between the range extender power Pact and the original power Praw. The larger the absolute value of the difference, the greater the change in the currently requested original power. Then the actually requested range extender power can be changed quickly accordingly, for example, by setting a smaller power switching duration and power switching step to ensure sufficient driving power. Therefore, the size of the difference between the original power and the range extender power can be reflected by calculating the second parameter. Exemplarily, the following Table 2 shows a corresponding relationship between the second parameter and the difference between the range extender power Pact and the original power Praw.

[0068] Table 2

[0069]

[0070] In each interval of the difference in Table 2, the difference and the second parameter are in a linear relationship. For example, in the interval from 0 to 10, the second parameter decreases linearly from 1 to 0.8.

[0071] The third parameter and the fourth parameter are calculated according to the current actual vehicle speed Vact. The higher the vehicle speed, the smaller the third parameter and the fourth parameter. When the vehicle speed is low, the actual requested range extender power will be maintained for a longer time, that is, the power switching time is longer. For example, the following Table 3 shows a corresponding relationship between the vehicle speed Vact and the third parameter.

[0072] Table 3

[0073]

[0074]

[0075] A negative speed indicates that the vehicle is reversing. In each speed interval in Table 3, the speed and the third parameter are in a linear relationship. For example, in the interval from 0 to 30, the third parameter decreases linearly from 2 to 1 accordingly.

[0076] The following Table 4 shows a corresponding relationship between the vehicle speed Vact and the fourth parameter.

[0077] Table 4

[0078] Vehicle speed Vact 0 10 50 70 100 The fourth parameter 60 30 10 5 3

[0079] In each speed interval in Table 4, the speed and the fourth parameter are in a linear relationship. For example, in the interval from 0 to 10, the fourth parameter decreases linearly from 60 to 30 accordingly.

[0080] The fifth parameter is determined according to the range extender power. When the range extender power is not in the optimal fuel consumption range of the vehicle, the time for which the range extender power is maintained should be reduced. When the original power changes, the range extender power changes quickly away from the current working point with poor fuel consumption. For example, the vehicle system power has poor fuel consumption performance between 0kW-15kW, and the corresponding fifth coefficient is smaller. For example, the following Table 5 shows a corresponding relationship between the range extender power Pact and the fifth parameter.

[0081] Table 5

[0082]

[0083] In each interval of the range extender power in Table 5, the range extender power and the fifth parameter are in a linear relationship. For example, in the interval from 0 to 5, the fifth parameter correspondingly increases linearly from 0.1 to 0.5.

[0084] The sixth parameter is calculated according to the current pedal opening. The larger the pedal opening, the deeper the accelerator pedal is depressed, and the smaller the corresponding sixth parameter is, so as to ensure that the power can be switched quickly during intense driving. For example, the following Table 6 shows a corresponding relationship between the pedal opening and the sixth parameter.

[0085] Table 6

[0086] Pedal opening 0 20 40 70 100 The sixth parameter 10 8 6 4 3

[0087] In each interval of the pedal opening in Table 6, the pedal opening and the sixth parameter are in a linear relationship. For example, in the interval from 0 to 20, the sixth parameter decreases linearly from 10 to 8 accordingly.

[0088] Through the above preset table, the power retention parameter corresponding to each vehicle condition parameter can be found or calculated using the linear relationship between the vehicle condition parameter and the power retention parameter. The above first to sixth parameters can be expected under different vehicle condition parameters. Therefore, according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter, the power switching step length is determined, and according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter, the power switching duration is determined, and the power switching step length and power switching duration calculated in real time according to the vehicle condition are obtained.

[0089] In some embodiments, determining the power switching step size according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter in the above steps includes the following steps:

[0090] The first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter are added together to obtain the power switching step length; or the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter are multiplied together to obtain the power switching step length.

[0091] Specifically, in one calculation method, the sixth parameter Sba corresponding to the pedal opening is used as the basic step length, and the first parameter Ka, the second parameter Kb, the third parameter Kc and the fifth parameter Kd are used as the power retention coefficient output by the preset table. The power retention coefficient is adjusted based on the basic step length, and the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter can be multiplied to obtain the power switching step length. The following is a calculation expression for the power switching step length Sact:

[0092] Sact = Sba*Ka*Kb*Kc*Kd;

[0093] In another calculation method, the first to sixth parameters are used as the switching step values ​​directly output from the preset table, and the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter can be directly added to obtain the power switching step. The following is a calculation expression for the power switching step Sact:

[0094] Sact=Sba+Ka+Kb+Kc+Kd.

[0095] In the above steps, determining the power switching duration according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter includes the following steps:

[0096] The first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter are added together to obtain the power switching duration; or, the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter are multiplied together to obtain the power switching duration.

[0097] Specifically, in one calculation method, the fourth parameter Tba corresponding to the vehicle speed is used as the basic duration, and the first parameter Ka, the second parameter Kb, the third parameter Kc and the fifth parameter Kd are used as the power retention coefficient output by the preset table. The power retention coefficient is adjusted based on the basic duration, and the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter can be multiplied to obtain the power switching duration. The following is a calculation expression for the power switching duration Tact:

[0098] Tact=Tba*Ka*Kb*Kc*Kd;

[0099] In another calculation method, the first to sixth parameters are used as the switching duration values ​​directly output by the preset table, and the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter can be directly added to obtain the power switching duration. The following is a calculation expression for the power switching duration Tact:

[0100] Tact=Tba+Ka+Kb+Kc+Kd.

[0101] By providing two calculation methods for calculating the power switching step and the power switching duration in this embodiment, the power switching step and the power switching duration can be obtained in real time according to the vehicle condition, so as to better control and update the range extender power through the power switching step and the power switching duration.

[0102] In some embodiments, the method further comprises:

[0103] The range extender power is updated to the original power with the power switching step length. In addition, it is determined by timing whether the duration of the range extender power reaches the power switching duration; when the duration of the range extender power reaches the power switching duration, the timing is restarted.

[0104] Specifically, the duration of the range extender power is timed by a timer. When the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power is greater than the power switching step, the range extender power is updated to the original power with the power switching step. After the range extender power is updated, the timer is reset accordingly; otherwise, the range extender power is controlled not to be updated, and the value of the last update is maintained. At this time, the range extender power may not be equal to the original power. If the duration of the range extender power reaches the power switching duration, but the difference between the original power and the range extender power is less than or equal to the power switching step, the timer is also reset.

[0105] By updating the range extender power to the original power and resetting the timer when the conditions are met in this embodiment, the next stable power maintenance duration can be continuously counted after the range extender power is updated, so as to control the range extender power according to the power switching duration and power switching step calculated in real time.

[0106] The present embodiment is described and illustrated below through preferred embodiments.

[0107] Figure 3 is a flow chart of the range extender power control method in this embodiment. Figure 3 As shown, the method comprises the following steps:

[0108] Step S301, obtaining the currently requested original power and the actually requested range extender power.

[0109] Step S302, determining a first parameter according to the slope of the pedal change; determining a second parameter according to the difference between the original power and the range extender power; determining a third parameter according to the vehicle speed; and determining a fifth parameter according to the range extender power.

[0110] Step S303, determining a sixth parameter according to the pedal opening, and using the sixth parameter as a basic step length; determining a fourth parameter according to the vehicle speed, and using the fourth parameter as a basic duration.

[0111] Step S304, multiplying the first parameter, the second parameter, the third parameter, the fifth parameter and the basic step length to obtain the power switching step length; multiplying the first parameter, the second parameter, the third parameter, the fifth parameter and the basic duration to obtain the power switching duration.

[0112] Step S305, when the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power is greater than the power switching step, the range extender power is updated to the original power with the power switching step, and the timing is restarted.

[0113] Figure 4 Schematic diagram of the range extender power update process in this embodiment. Figure 4 As shown, the range extender power and the original power are obtained, and the duration of the range extender power is timed by a timer. If the duration of the range extender power reaches the power switching duration, the timer is reset. If the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power (the absolute value of the difference) is greater than the power switching step, the range extender power is updated to the original power with the power switching step, so that the range extender power is the same as the original power. Otherwise, the range extender power remains unchanged, the value of the last update is maintained, and the timer continues to accumulate timing.

[0114] In this embodiment, the power switching step and the power switching duration are determined according to the pedal change slope, original power, range extender power, vehicle speed, and pedal opening in the vehicle state, so that the range extender power remains stable within the power switching duration and is updated with the power switching step, following the driver's needs within a certain range, thereby enhancing the sense of communication between the driver and the vehicle during driving. The range extender power will be adaptively judged and updated according to the vehicle speed and the driver's acceleration intention and other states, which can meet the driving and power control needs, and reduce the frequency of range extender power changes, optimize fuel consumption performance, reduce the frequency of charging and discharging currents of the power battery pack, and maintain battery life.

[0115] It should be noted that the steps shown in the above process or the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0116] In this embodiment, a range extender power control device is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and will not be repeated hereafter. The terms "module", "unit", "subunit", etc. used below can implement a combination of software and / or hardware of predetermined functions. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0117] Figure 5 is a structural block diagram of the range extender power control device of this embodiment, such as Figure 5 As shown, the device comprises:

[0118] An acquisition module 10 is used to acquire the currently requested original power and the actually requested range extender power;

[0119] The control update module 20 is used to control the range extender power update with the power switching step length when the duration of the range extender power reaches the power switching duration and the difference between the original power and the range extender power is greater than the power switching step length.

[0120] Through the device provided in this embodiment, the power switching step size and the power switching duration are determined according to the state of the whole vehicle, so that the power of the range extender remains stable within the power switching duration and is updated with the power switching step size, the power of the range extender is controlled to weakly follow the original power, the frequency of the power change of the range extender is reduced, the fuel consumption performance is optimized, the actual power consumption of the vehicle system is followed to the maximum extent, the frequency of the charging and discharging current of the power battery pack is reduced, the battery life is maintained, and at the same time, the driver's needs are followed within a certain range, thereby enhancing the sense of communication between the driver and the vehicle during driving. The power of the range extender will be adaptively judged and updated according to the vehicle speed and the driver's acceleration intention and other states, which can meet the driving and power control needs.

[0121] It should be noted that the above modules can be functional modules or program modules, and can be implemented by software or hardware. For modules implemented by hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0122] In this embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0123] Optionally, the computer device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0124] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and will not be repeated in this embodiment.

[0125] In addition, in combination with the range extender power control method provided in the above embodiments, a storage medium may be provided in this embodiment to implement the range extender power control method. The storage medium stores a computer program; when the computer program is executed by a processor, any range extender power control method in the above embodiments is implemented.

[0126] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0127] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0128] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0129] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0130] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A range extender power control method, characterized in that: include: Get the currently requested raw power and the actually requested range extender power; When the duration of the range extender power reaches the power switching duration, and the difference between the original power and the range extender power is greater than the power switching step length, the range extender power is updated by controlling the power switching step length.

2. The range extender power control method according to claim 1, characterized in that: The power switching step size and the power switching duration are determined in real time according to the pedal change slope, the original power, the range extender power, the vehicle speed, and the pedal opening; the method further includes: Determine the power switching step size and the power switching duration; the specific process includes: Determining a first parameter according to the pedal change slope; determining a second parameter according to a difference between the original power and the range extender power; Determining a third parameter and a fourth parameter according to the vehicle speed; determining a fifth parameter according to the range extender power; determining a sixth parameter according to the pedal opening; Determining the power switching step size according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter; The power switching duration is determined according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter.

3. The range extender power control method according to claim 2, characterized in that: The step of determining the power switching step size according to the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter includes: Adding the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter to obtain the power switching step size; Alternatively, the power switching step length is obtained by multiplying the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter.

4. The range extender power control method according to claim 2, characterized in that: The determining the power switching duration according to the first parameter, the second parameter, the third parameter, the fourth parameter and the fifth parameter includes: Adding the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter to obtain the power switching duration; Alternatively, the power switching duration is obtained by multiplying the first parameter, the second parameter, the third parameter, the fifth parameter and the sixth parameter.

5. The range extender power control method according to claim 2, characterized in that: The method further comprises: The parameters corresponding to the pedal change slope, the difference between the original power and the range extender power, the range extender power, the vehicle speed, and the pedal opening are determined by looking up a preset table.

6. The range extender power control method according to claim 1, characterized in that: The method further comprises: The range extender power is updated to the original power with the power switching step size.

7. The range extender power control method according to claim 1, characterized in that: The method further comprises: Determine by timing whether the duration of the range extender power reaches the power switching duration; When the duration of the range extender power reaches the power switching duration, the timing is restarted.

8. A range extender power control device, characterized in that: include: An acquisition module, used to acquire the currently requested original power and the actually requested range extender power; A control update module is used to control the range extender power update with the power switching step length when the duration of the range extender power reaches the power switching duration and the difference between the original power and the range extender power is greater than the power switching step length.

9. A computer device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the range extender power control method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the range extender power control method according to any one of claims 1 to 7 are implemented.

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