Range extender control method, device, equipment and computer-readable storage medium

Abstract

An extender control method, device, equipment and computer-readable storage medium. The method includes: when the vehicle enters the high-speed energy-saving cruise mode, calculating a first power to be output by the extender based on a preset vehicle speed; controlling the extender to output the first power, and obtaining the speed of the vehicle after the extender outputs the first power; when the speed of the vehicle after the extender outputs the first power is greater than the first vehicle speed upper limit in the high-speed energy-saving cruise mode, turning off the extender; when the speed is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode, controlling the extender to output a second power, and no longer charging through the power battery to store redundant energy or discharging to provide additional power, which solves the technical problem that both the charging and discharging of the power battery in the related art have energy losses, resulting in low energy utilization rate of the vehicle.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle control, and particularly to a control method, device, equipment and computer-readable storage medium for a range extender. Background Art

[0002] Currently, range-extended electric vehicles have the characteristic that they can achieve all their power performance in pure electric mode. When the output power of the range extender of a range-extended electric vehicle is greater than the demand power of the range-extended electric vehicle, the range-extended electric vehicle charges the power battery to store the excess energy, so that the output power of the range extender minus the charging power of the power battery is equal to the demand power of the range-extended electric vehicle; when the demand power of the range-extended electric vehicle is less than the output power of the range extender of the range-extended electric vehicle, the range-extended electric vehicle discharges the power battery to provide additional power, so that the output power of the range extender plus the discharge power of the power battery is equal to the demand power of the range-extended electric vehicle. However, there are energy losses in both the charging and discharging of the power battery of the range-extended electric vehicle, resulting in low energy utilization rate of the vehicle. Summary of the Invention

[0003] The present application provides a control method, device, equipment and computer-readable storage medium for a range extender, which can solve the technical problem of low energy utilization rate of range-extended electric vehicles existing in the prior art.

[0004] In a first aspect, an embodiment of the present application provides a control method for a range extender, and the control method for the range extender includes:

[0005] When the vehicle enters the high-speed energy-saving cruise mode, calculate a first power to be output by the range extender based on a preset vehicle speed;

[0006] Control the range extender to output the first power, and obtain the speed of the vehicle after the range extender outputs the first power;

[0007] When the speed is greater than the first vehicle speed upper limit in the high-speed energy-saving cruise mode, turn off the range extender;

[0008] When the speed is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode, control the range extender to output a second power, where the second power is greater than the first power, and the oil-electric conversion rates corresponding to the second power and the first power are greater than the rated value, and the rated value is greater than or equal to the minimum oil-electric conversion rate meeting the energy-saving requirements.

[0009] Combined with the first aspect, in an implementation manner, before the step of calculating a first power to be output by the range extender based on a preset vehicle speed when the vehicle enters the high-speed energy-saving cruise mode, it includes:

[0010] Detect whether the vehicle meets the conditions for entering the high-speed energy-saving cruise mode, where the conditions for entering the high-speed energy-saving cruise mode include:

[0011] (1) Receive a vehicle cruise mode entry signal;

[0012] (2) The remaining battery power is less than or equal to the calibrated value;

[0013] (3) The preset vehicle speed is less than the upper limit of the second vehicle speed in the high-speed energy-saving cruise mode and greater than the lower limit of the second vehicle speed in the high-speed energy-saving cruise mode, where the fuel-electric conversion rate corresponding to the power to be output by the range extender corresponding to the upper limit of the second vehicle speed and the lower limit of the second vehicle speed in the high-speed energy-saving cruise mode is equal to the rated value;

[0014] If all the conditions for entering the high-speed energy-saving cruise mode are met, the detection result is that the vehicle enters the high-speed energy-saving cruise mode;

[0015] If any of the conditions for entering the high-speed energy-saving cruise mode is not met, the detection result is that the vehicle does not enter the high-speed energy-saving cruise mode.

[0016] Combined with the first aspect, in an embodiment, the step of calculating the first power to be output by the range extender based on the preset vehicle speed includes:

[0017] Calculate the rolling resistance and air resistance of the vehicle corresponding to the preset vehicle speed, and use the sum of the rolling resistance and the air resistance as the uniform driving resistance of the vehicle on a flat road surface;

[0018] Use the product of the preset vehicle speed and the uniform driving resistance of the vehicle on a flat road surface as the first power to be output by the range extender.

[0019] Combined with the first aspect, in an embodiment, after the step of turning off the range extender, it includes:

[0020] Start the energy recovery mode;

[0021] When the speed is less than or equal to the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode and greater than the preset vehicle speed, or the speed is equal to the preset vehicle speed, turn off the energy recovery mode.

[0022] Combined with the first aspect, in an embodiment, after the step of turning off the range extender, it further includes:

[0023] When the speed is less than the preset vehicle speed, control the range extender to output the first power.

[0024] Combined with the first aspect, in an embodiment, after the step of controlling the range extender to output the second power, it includes:

[0025] If the speed of the vehicle is less than the lower limit of the first vehicle speed in the high-speed energy-saving cruise mode after the range extender outputs the second power, the high-speed energy-saving cruise mode is exited;

[0026] If the speed of the vehicle is equal to the preset vehicle speed after the range extender outputs the second power, control the range extender to output the first power.

[0027] Combined with the first aspect, in an implementation manner, the range extender control method includes:

[0028] When a driver's request to adjust the preset vehicle speed is received, calculate the third power to be output by the range extender based on the preset speed after acceleration or deceleration;

[0029] If the fuel-electric conversion rate corresponding to the third power is greater than the rated value, control the range extender to output the third power.

[0030] In a second aspect, an embodiment of the present application provides a range extender control device, and the range extender control device includes:

[0031] A calculation module, configured to calculate the first power to be output by the range extender based on the preset vehicle speed when the vehicle enters the high-speed energy-saving cruise mode;

[0032] An information acquisition module, configured to control the range extender to output the first power and acquire the speed of the vehicle after the range extender outputs the first power;

[0033] A first control module, configured to turn off the range extender when the speed is greater than the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode;

[0034] A second control module, configured to control the range extender to output the second power when the speed is less than the lower limit of the first vehicle speed in the high-speed energy-saving cruise mode, where the second power is greater than the first power, and the fuel-electric conversion rates corresponding to the second power and the first power are greater than the rated value, and the rated value is greater than or equal to the minimum fuel-electric conversion rate that meets the energy-saving requirements.

[0035] In a third aspect, an embodiment of the present application provides a range extender control device, and the range extender control device includes a processor, a memory, and a range extender control program stored on the memory and executable by the processor. When the range extender control program is executed by the processor, the steps of the range extender control method described above are implemented.

[0036] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a range extender control program is stored. When the range extender control program is executed by a processor, the steps of the range extender control method described above are implemented.

[0037] The beneficial effects brought by the technical solutions provided by the embodiments of the present application include:

[0038] When the vehicle enters the high - speed energy - saving cruise mode, calculate the first power to be output by the range extender based on the preset vehicle speed; control the range extender to output the first power, and obtain the vehicle speed after the range extender outputs the first power; when the vehicle speed after the range extender outputs the first power is greater than the upper limit of the first vehicle speed in the high - speed energy - saving cruise mode, turn off the range extender and store the excess energy without charging through the power battery; when the vehicle speed is less than the lower limit of the first vehicle speed in the high - speed energy - saving cruise mode, control the range extender to output the second power, thereby increasing the driving force of the vehicle and no longer discharging through the power battery to provide additional power, which solves the technical problem that there are energy losses in both the charging and discharging of the power battery in the related art, resulting in low energy utilization rate of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic flowchart of the first embodiment of the range extender control method of the present application;

[0040] Figure 2 For the present application Figure 1 It is a refined flowchart of step S10 in the present application;

[0041] Figure 3 It is a schematic flowchart of the second embodiment of the range extender control method of the present application;

[0042] Figure 4 It is a schematic flowchart of the third embodiment of the range extender control method of the present application;

[0043] Figure 5 It is a schematic diagram of the functional modules of an embodiment of the range extender control device of the present application;

[0044] Figure 6 It is a schematic diagram of the hardware structure of the range extender control device involved in the solution of the embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0046] In the description of the specification and claims of this application and the above-mentioned drawings, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices. The descriptions such as "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit that "first", "second" and "third" are different types.

[0047] In the description of the embodiments of this application, terms such as "exemplary", "for example" or "for instance" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary", "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example" or "for instance" is intended to present relevant concepts in a specific manner.

[0048] In the description of the embodiments of this application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; "and / or" in the text is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "a plurality of" means two or more than two.

[0049] In some processes described in the embodiments of this application, a plurality of operations or steps appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of this application or may be executed in parallel. The serial numbers of the operations are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in order or in parallel, and these operations or steps may be combined.

[0050] To make the objectives, technical solutions and advantages of this application clearer, the following will describe the embodiments of this application in detail with reference to the drawings.

[0051] In a first aspect, an embodiment of this application provides a range extender control method.

[0052] In one embodiment, with reference to Figure 1 , Figure 1 is a schematic flowchart of the first embodiment of the range extender control method of this application. As Figure 1 shown, the range extender control method includes:

[0053] Step S10, when the vehicle enters the high-speed energy-saving cruise mode, calculate the first power to be output by the range extender based on a preset vehicle speed.

[0054] In this embodiment, the high-speed energy-saving cruise mode means that all the electrical energy of the vehicle drive motor comes from the output of the range extender, the range extender operates within an efficient range, and the electrical energy output by the range extender does not charge the battery, avoiding the efficiency loss caused by battery charging and discharging. Therefore, when it is determined that the vehicle enters the high-speed energy-saving cruise mode, calculate the first power to be output by the range extender based on the preset vehicle speed, so as to control the range extender to output the first power corresponding to the preset vehicle speed.

[0055] Further, due to the changes in road slope and frictional resistance, when the output power of the range extender is greater than the power required for the vehicle to travel at the preset vehicle speed on the current road, the vehicle is allowed to travel at a speed greater than the preset vehicle speed; when the output power of the range extender is less than the power required for the vehicle to travel at the preset vehicle speed on the current road, the vehicle is allowed to travel at a speed less than the preset vehicle speed.

[0056] Further, in one embodiment, refer to Figure 2 , Figure 2 which is Figure 1 a detailed flowchart of step S10 in this application. As Figure 2 shown, the step of calculating the first power to be output by the range extender based on the preset vehicle speed includes:

[0057] Step S101, calculate the rolling resistance and air resistance of the vehicle corresponding to the preset vehicle speed, and use the sum of the rolling resistance and the air resistance as the uniform driving resistance of the vehicle on a flat road surface;

[0058] Step S102, use the product of the preset vehicle speed and the uniform driving resistance of the vehicle on a flat road surface as the first power to be output by the range extender.

[0059] In this embodiment, the uniform driving resistance of the vehicle on a flat road surface includes rolling resistance and air resistance. The rolling resistance F f =G a *f, where G a is used to represent the total vehicle weight, and f is used to represent the rolling resistance coefficient. For a sedan, f = 0.0116 + 0.000142V, where V is used to represent the preset vehicle speed of the vehicle.

[0060] The air resistance C D is used to represent the air resistance coefficient, and A is used to represent the frontal area of the vehicle.

[0061] Taking the sum of the rolling resistance and the air resistance as the constant-speed driving resistance of the vehicle on a flat road surface, that is, the constant-speed driving resistance F of the vehicle on a flat road surface z = F f + F w .

[0062] Taking the product of the preset vehicle speed and the constant-speed driving resistance of the vehicle on a flat road surface as the first power to be output by the range extender, that is, the first power P1 to be output by the range extender = V * F z .

[0063] Step S20, controlling the range extender to output the first power, and obtaining the speed of the vehicle after the range extender outputs the first power;

[0064] In this embodiment, the range extender is controlled to output the first power corresponding to the preset vehicle speed, and the speed of the vehicle after the range extender outputs the first power is obtained. It should be noted that when the range extender outputs the first power to drive the vehicle to cruise, due to factors such as road slope changes, the driving resistance of the vehicle changes during the driving process at the preset vehicle speed. Therefore, when the power output by the range extender is greater than the power required for driving at the preset vehicle speed, the vehicle is allowed to drive at a speed greater than the preset vehicle speed, and when the power output by the range extender is less than the power required for driving at the preset vehicle speed, the vehicle is allowed to drive at a speed less than the preset vehicle speed.

[0065] Step S30, when the speed is greater than the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode, turning off the range extender;

[0066] In this embodiment, according to the preset vehicle speed, the user sets the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode by himself / herself, where the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode should meet the speed limit regulations for road driving. When the speed of the vehicle after the range extender outputs the first power is greater than the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode, the range extender is turned off and no driving force is provided to the vehicle.

[0067] Step S40, when the speed is less than the lower limit of the first vehicle speed in the high-speed energy-saving cruise mode, controlling the range extender to output a second power, where the second power is greater than the first power, and the oil-electric conversion rates corresponding to the second power and the first power are greater than the rated value, and the rated value is greater than or equal to the minimum oil-electric conversion rate meeting the energy-saving requirements.

[0068] In this embodiment, according to a preset vehicle speed, the user sets the first lower speed limit in the high-speed energy-saving cruise mode by himself / herself, where the first lower speed limit in the high-speed energy-saving cruise mode should meet the speed limit regulations for road driving. When the speed of the vehicle is less than the first lower speed limit in the high-speed energy-saving cruise mode after the range extender outputs the first power, the range extender is controlled to output a preset second power. Since the second power is greater than the first power, the driving force provided by the range extender to the vehicle increases to increase the vehicle speed. Since the rated value is greater than or equal to the minimum fuel-electricity conversion rate meeting the energy-saving requirements, in order to ensure that the fuel-electricity conversion rate corresponding to the output power of the range extender is greater than the minimum fuel-electricity conversion rate meeting the energy-saving requirements, the fuel-electricity conversion rates corresponding to the second power and the first power should be greater than the rated value.

[0069] Wherein, the rated value can be the product of the fuel-electricity conversion rate corresponding to the optimal fuel consumption value, the charging efficiency of the power battery, and the discharging efficiency of the power battery; the rated value can also be the minimum fuel-electricity conversion rate meeting the energy-saving requirements; the rated value can also be the minimum fuel-electricity conversion rate meeting the energy-saving requirements plus a preset value.

[0070] In this embodiment, when the vehicle enters the high-speed energy-saving cruise mode, the first power to be output by the range extender is calculated based on the preset vehicle speed; the range extender is controlled to output the first power, and the speed of the vehicle after the range extender outputs the first power is obtained; when the speed of the vehicle is greater than the first upper speed limit in the high-speed energy-saving cruise mode after the range extender outputs the first power, the range extender is turned off, and the excess energy is not stored by charging the power battery; when the speed is less than the first lower speed limit in the high-speed energy-saving cruise mode, the range extender is controlled to output the second power, thereby increasing the driving force of the vehicle, and the power battery is no longer discharged to provide additional power, solving the technical problem in the related art that both the charging and discharging of the power battery have energy losses, resulting in low energy utilization rate of the vehicle.

[0071] Further, in one embodiment, before step S10, it includes:

[0072] Detecting whether the vehicle meets the conditions for entering the high-speed energy-saving cruise mode, where the conditions for entering the high-speed energy-saving cruise mode include:

[0073] (1) Receiving a signal that the vehicle enters the cruise mode;

[0074] (2) The remaining battery power is less than or equal to the calibrated value;

[0075] (3) The preset vehicle speed is less than the second upper speed limit in the high-speed energy-saving cruise mode and greater than the second lower speed limit in the high-speed energy-saving cruise mode, where the fuel-electricity conversion rates corresponding to the power to be output by the range extender corresponding to the second upper speed limit and the second lower speed limit in the high-speed energy-saving cruise mode are equal to the rated value;

[0076] If all the conditions for entering the high-speed energy-saving cruise mode are met, the detection result is that the vehicle enters the high-speed energy-saving cruise mode;

[0077] If any one of the conditions for entering the high-speed energy-saving cruise mode is not met, the detection result is that the vehicle does not enter the high-speed energy-saving cruise mode.

[0078] In this embodiment, since the high-speed energy-saving cruise mode means that all the electrical energy of the vehicle drive motor comes from the output of the range extender, the range extender operates in the high-efficiency area, and the electrical energy output by the range extender does not charge the power battery, avoiding the efficiency loss caused by the charging and discharging of the power battery. Therefore, it is necessary to first detect whether the vehicle enters the high-speed energy-saving cruise mode.

[0079] The conditions for the vehicle to enter the high-speed energy-saving cruise mode include:

[0080] (1) Receiving a signal for the vehicle to enter the cruise mode;

[0081] (2) The remaining battery power is less than or equal to the calibrated value;

[0082] (3) The preset vehicle speed is less than the upper limit of the second vehicle speed in the high-speed energy-saving cruise mode and greater than the lower limit of the second vehicle speed in the high-speed energy-saving cruise mode, where the oil-electric conversion rate corresponding to the power to be output by the range extender corresponding to the upper limit and the lower limit of the second vehicle speed in the high-speed energy-saving cruise mode is equal to the rated value;

[0083] If all the conditions for entering the high-speed energy-saving cruise mode are met, the detection result is that the vehicle enters the high-speed energy-saving cruise mode.

[0084] If any one of the conditions for entering the high-speed energy-saving cruise mode is not met, the detection result is that the vehicle does not enter the high-speed energy-saving cruise mode. And if the vehicle does not enter the high-speed energy-saving cruise mode, it is impossible to control the output power of the range extender to avoid the efficiency loss caused by the charging and discharging of the power battery.

[0085] Further, in one embodiment, after the step of turning off the range extender, it includes:

[0086] Starting the energy recovery mode;

[0087] When the speed is less than or equal to the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode and greater than the preset vehicle speed, or the speed is equal to the preset vehicle speed, the energy recovery mode is turned off.

[0088] In this embodiment, after turning off the range extender, the energy recovery mode of the vehicle is started, and by controlling the energy recovery torque, the vehicle speed is prevented from being too high.

[0089] When the vehicle speed is less than or equal to the first vehicle speed upper limit in the high-speed energy-saving cruise mode and greater than the preset vehicle speed due to factors such as driving resistance, or when the vehicle speed is equal to the preset vehicle speed, the energy recovery mode is turned off, and the range extender remains off, allowing the vehicle to coast freely to avoid frequent start-stop of the range extender.

[0090] Further, in one embodiment, after the step of turning off the range extender, it further includes:

[0091] When the speed is less than the preset vehicle speed, control the range extender to output the first power.

[0092] In this embodiment, when the vehicle speed after the range extender outputs the first power is less than the preset vehicle speed, control the range extender to output the first power. All the electric energy output by the range extender is supplied to the drive motor to drive the vehicle, so that the vehicle speed reaches the preset vehicle speed.

[0093] Further, in one embodiment, referring to Figure 3 , Figure 3 is a schematic flowchart of the second embodiment of the range extender control method of the present application. As Figure 3 shown, after the step of controlling the range extender to output the second power, it includes:

[0094] Step S50, if the vehicle speed after the range extender outputs the second power is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode, then exit the high-speed energy-saving cruise mode;

[0095] Step S60, if the vehicle speed after the range extender outputs the second power is equal to the preset vehicle speed, then control the range extender to output the first power.

[0096] In this embodiment, if the vehicle speed changes due to factors such as road slope changes after the range extender outputs the second power and is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode, then exit the high-speed energy-saving cruise mode to avoid the continuous decrease of the vehicle speed beyond the acceptable speed fluctuation range of the driver.

[0097] If the vehicle speed after the range extender outputs the second power is equal to the preset vehicle speed, then control the range extender to output the first power to avoid the continuous increase of the vehicle speed, so that the vehicle speed fluctuates within the range of the upper and lower limits of the first vehicle speed.

[0098] Further, in one embodiment, referring to Figure 4 , Figure 4 is a schematic flowchart of the third embodiment of the range extender control method of the present application. As Figure 4 shown, the range extender control method includes:

[0099] Step S70, when receiving a request from the driver to adjust the preset vehicle speed, calculate the third power to be output by the range extender based on the preset speed after acceleration or deceleration.

[0100] Step S80, if the fuel-electric conversion rate corresponding to the third power is greater than the rated value, control the range extender to output the third power.

[0101] In this embodiment, when receiving a request from the driver to adjust the preset vehicle speed in the high-speed energy-saving cruise mode, calculate the third power to be output by the range extender based on the preset speed after acceleration or deceleration. Among them, the calculation process of calculating the third power to be output by the range extender is the same as the calculation process of calculating the first power to be output by the range extender, which will not be elaborated here.

[0102] If the fuel-electric conversion rate corresponding to the third power is greater than the rated value, control the range extender to output the third power; otherwise, the power output by the range extender remains unchanged.

[0103] Further, when a vehicle appears in front of the vehicle and is recognized by the assisted driving system as a target vehicle for following, and the vehicle decelerates due to the low speed or deceleration of the target vehicle, the high-speed energy-saving cruise mode is exited and the normal power drive mode is entered.

[0104] Further, when receiving an acceleration signal from the driver stepping on the accelerator, the high-speed energy-saving cruise mode is exited and the normal power drive mode is entered to ensure that the vehicle responds according to the driver's intention.

[0105] Further, for a vehicle equipped with adaptive cruise and integrated cruise assist function, when the vehicle enters the following driving condition, the high-speed energy-saving cruise mode is exited to ensure the control accuracy of the vehicle speed and the following driving performance of the vehicle.

[0106] In a second aspect, the embodiment of the present application further provides a range extender control device.

[0107] In one embodiment, refer to Figure 5 , Figure 5 This is a schematic diagram of the functional modules of an embodiment of the range extender control device of the present application. As Figure 5 shown, the range extender control device includes:

[0108] A calculation module 10, configured to calculate the first power to be output by the range extender based on the preset vehicle speed when the vehicle enters the high-speed energy-saving cruise mode;

[0109] An information acquisition module 20, configured to control the range extender to output the first power and acquire the speed of the vehicle after the range extender outputs the first power;

[0110] A first control module 30, configured to turn off the range extender when the speed is greater than the first vehicle speed upper limit in the high-speed energy-saving cruise mode;

[0111] A second control module 40, configured to control the range extender to output a second power when the speed is lower than the lower limit of the first vehicle speed in the high-speed energy-saving cruise mode, where the second power is greater than the first power, and the fuel-electric conversion rates corresponding to the second power and the first power are greater than the rated value, and the rated value is greater than or equal to the minimum fuel-electric conversion rate meeting the energy-saving requirements.

[0112] Further, in one embodiment, the range extender control device further includes a new module for:

[0113] Detecting whether the vehicle meets the conditions for entering the high-speed energy-saving cruise mode, where the conditions for entering the high-speed energy-saving cruise mode include:

[0114] (1) Receiving a vehicle cruise mode entry signal;

[0115] (2) The remaining battery power is less than or equal to the calibrated value;

[0116] (3) The preset vehicle speed is less than the upper limit of the second vehicle speed in the high-speed energy-saving cruise mode and greater than the lower limit of the second vehicle speed in the high-speed energy-saving cruise mode, where the fuel-electric conversion rates corresponding to the upper limit and the lower limit of the second vehicle speed in the high-speed energy-saving cruise mode for the power to be output by the range extender are equal to the rated value;

[0117] If all the conditions for entering the high-speed energy-saving cruise mode are met, the detection result is that the vehicle enters the high-speed energy-saving cruise mode;

[0118] If any one of the conditions for entering the high-speed energy-saving cruise mode is not met, the detection result is that the vehicle does not enter the high-speed energy-saving cruise mode.

[0119] Further, in one embodiment, a calculation module 10 is configured to:

[0120] Calculate the rolling resistance and air resistance of the vehicle corresponding to the preset vehicle speed, and use the sum of the rolling resistance and the air resistance as the uniform driving resistance of the vehicle on a flat road surface;

[0121] Use the product of the preset vehicle speed and the uniform driving resistance of the vehicle on a flat road surface as the first power to be output by the range extender.

[0122] Further, in one embodiment, the range extender control device further includes a new module for:

[0123] Starting the energy recovery mode;

[0124] When the speed is less than or equal to the upper limit of the first vehicle speed in the high-speed energy-saving cruise mode and greater than the preset vehicle speed, or the speed is equal to the preset vehicle speed, turning off the energy recovery mode.

[0125] Further, in one embodiment, the range extender control device further includes a new module for:

[0126] When the speed is less than the preset vehicle speed, control the range extender to output the first power.

[0127] Further, in one embodiment, the range extender control device further includes a new module for:

[0128] If the speed of the vehicle is less than the lower limit of the first vehicle speed in the high-speed energy-saving cruise mode after the range extender outputs the second power, exit the high-speed energy-saving cruise mode;

[0129] If the speed of the vehicle is equal to the preset vehicle speed after the range extender outputs the second power, control the range extender to output the first power.

[0130] Further, in one embodiment, the range extender control device further includes a new module for:

[0131] When a driver's request to adjust the preset vehicle speed is received, calculate the third power to be output by the range extender based on the preset speed after acceleration or deceleration;

[0132] If the oil-electric conversion rate corresponding to the third power is greater than the rated value, control the range extender to output the third power.

[0133] Wherein, the functions of each module in the above range extender control device correspond to the steps in the above range extender control method embodiment, and its functions and implementation processes will not be elaborated here one by one.

[0134] In a third aspect, an embodiment of the present application provides a range extender control device, which can be a device with data processing functions such as a personal computer (PC), a laptop computer, a server, etc.

[0135] Refer to Figure 6 , Figure 6 is a schematic hardware structure diagram of the range extender control device involved in the embodiment of the present application. In the embodiment of the present application, the range extender control device may include a processor, a memory, a communication interface, and a communication bus.

[0136] Among them, the communication bus can be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0137] The communication interface includes interfaces such as input / output (I / O) interfaces, physical interfaces, and logical interfaces for implementing the interconnection of components inside the range extender control device, as well as interfaces for implementing the interconnection between the range extender control device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0138] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical memory, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0139] The processor can be a general-purpose processor, which can call the range extender control program stored in the memory and execute the range extender control method provided by the embodiments of the present application. For example, the general-purpose processor can be a central processing unit (CPU). Among them, the method executed when the range extender control program is called can refer to the various embodiments of the range extender control method of the present application, which will not be elaborated here.

[0140] Those skilled in the art can understand that Figure 6 the hardware structure shown in

[0141] does not constitute a limitation to the present application, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0142] On the readable storage medium of the present application, there is a range extender control program, where when the range extender control program is executed by a processor, the steps of the range extender control method as described above are implemented.

[0143] Among them, the method implemented when the range extender control program is executed can refer to the various embodiments of the range extender control method of the present application, which will not be elaborated here.

[0144] It should be noted that the serial numbers of the above embodiments of the present application are only for description and do not represent the superiority or inferiority of the embodiments.

[0145] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal device to execute the methods described in the various embodiments of the present application.

[0146] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A range extender control method, characterized in that, The range extender control method includes: When the vehicle enters the high-speed energy-saving cruise mode, calculate the first power to be output by the range extender based on the preset vehicle speed; Control the range extender to output the first power, and obtain the vehicle speed after the range extender outputs the first power; When the speed is greater than the first vehicle speed upper limit in the high-speed energy-saving cruise mode, turn off the range extender; When the speed is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode, control the range extender to output the second power, where the second power is greater than the first power, and the fuel-electric conversion rates corresponding to the second power and the first power are greater than the rated value, and the rated value is greater than or equal to the minimum fuel-electric conversion rate meeting the energy-saving requirements; Among them, after the step of turning off the range extender, it includes: Start the energy recovery mode; When the speed is less than or equal to the first vehicle speed upper limit in the high-speed energy-saving cruise mode and greater than the preset vehicle speed, or the speed is equal to the preset vehicle speed, turn off the energy recovery mode; Among them, before the step of calculating the first power to be output by the range extender based on the preset vehicle speed when the vehicle enters the high-speed energy-saving cruise mode, it includes: Detect whether the vehicle meets the conditions for entering the high-speed energy-saving cruise mode, where the conditions for entering the high-speed energy-saving cruise mode include: (1), Receive the vehicle entering the cruise mode signal; (2), The remaining battery power is less than or equal to the calibrated value; (3), The preset vehicle speed is less than the second vehicle speed upper limit in the high-speed energy-saving cruise mode and greater than the second vehicle speed lower limit in the high-speed energy-saving cruise mode, where the fuel-electric conversion rates corresponding to the second vehicle speed upper limit and the second vehicle speed lower limit in the high-speed energy-saving cruise mode and the power to be output by the range extender are equal to the rated value; If all the conditions for entering the high-speed energy-saving cruise mode are met, the detection result is that the vehicle enters the high-speed energy-saving cruise mode; If any one of the conditions for entering the high-speed energy-saving cruise mode is not met, the detection result is that the vehicle does not enter the high-speed energy-saving cruise mode.

2. The range extender control method according to claim 1, characterized in that, The step of calculating the first power to be output by the range extender based on the preset vehicle speed includes: Calculate the rolling resistance and air resistance of the vehicle corresponding to the preset vehicle speed, and use the sum of the rolling resistance and the air resistance as the uniform driving resistance of the vehicle on a flat road surface; Use the product of the preset vehicle speed and the uniform driving resistance of the vehicle on a flat road surface as the first power to be output by the range extender.

3. The range extender control method according to claim 1, wherein After the step of turning off the range extender, it further includes: When the speed is less than the preset vehicle speed, control the range extender to output the first power.

4. The range extender control method according to claim 1, wherein After the step of controlling the range extender to output the second power, it includes: If the vehicle speed is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode after the range extender outputs the second power, exit the high-speed energy-saving cruise mode; If the vehicle speed is equal to the preset vehicle speed after the range extender outputs the second power, control the range extender to output the first power.

5. The range extender control method according to claim 1, characterized in that The range extender control method includes: When receiving the driver's request to adjust the preset vehicle speed, calculate the third power to be output by the range extender based on the accelerated or decelerated preset speed; If the fuel-electric conversion rate corresponding to the third power is greater than the rated value, control the range extender to output the third power.

6. An extender control device, characterized in that, The range extender control device includes: A calculation module, configured to calculate a first power to be output by the range extender based on a preset vehicle speed when the vehicle enters the high-speed energy-saving cruise mode; An information acquisition module, configured to control the range extender to output the first power and acquire the vehicle speed of the vehicle after the range extender outputs the first power; A first control module, configured to turn off the range extender when the vehicle speed is greater than the first vehicle speed upper limit in the high-speed energy-saving cruise mode; A second control module, configured to control the range extender to output a second power when the vehicle speed is less than the first vehicle speed lower limit in the high-speed energy-saving cruise mode, where the second power is greater than the first power, and the oil-electric conversion rates corresponding to the second power and the first power are greater than the rated value, and the rated value is greater than or equal to the minimum oil-electric conversion rate meeting the energy-saving requirements; Wherein, the first control module is specifically further configured to: Start the energy recovery mode; Turn off the energy recovery mode when the vehicle speed is less than or equal to the first vehicle speed upper limit in the high-speed energy-saving cruise mode and greater than the preset vehicle speed, or when the vehicle speed is equal to the preset vehicle speed; Wherein, before the step of calculating the first power to be output by the range extender based on the preset vehicle speed when the vehicle enters the high-speed energy-saving cruise mode, it includes: Detect whether the vehicle meets the conditions for entering the high-speed energy-saving cruise mode, where the conditions for entering the high-speed energy-saving cruise mode include: (1), receiving a vehicle cruise mode signal; (2), the remaining battery power is less than or equal to the calibrated value; (3), the preset vehicle speed is less than the second vehicle speed upper limit in the high-speed energy-saving cruise mode and greater than the second vehicle speed lower limit in the high-speed energy-saving cruise mode, where the oil-electric conversion rates corresponding to the powers to be output by the range extender corresponding to the second vehicle speed upper limit and the second vehicle speed lower limit in the high-speed energy-saving cruise mode are equal to the rated value; If all the conditions for entering the high-speed energy-saving cruise mode are met, the detection result is that the vehicle enters the high-speed energy-saving cruise mode; If any one of the conditions for entering the high-speed energy-saving cruise mode is not met, the detection result is that the vehicle does not enter the high-speed energy-saving cruise mode.

7. An extender control device, characterized in that, The range extender control device includes a processor, a memory, and a range extender control program stored on the memory and executable by the processor, where when the range extender control program is executed by the processor, the steps of the range extender control method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium, characterized in that, A computer-readable storage medium stores a range extender control program, where when the range extender control program is executed by a processor, the steps of the range extender control method according to any one of claims 1 to 5 are implemented.

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