Range extender control method and device and range extender controller

Abstract

The invention relates to a range extender control method and device and a range extender controller, and relates to the technical field of vehicle control, and the method in one embodiment comprises the steps that the accumulated charging frequency of a target vehicle in the current mileage period and the number of running days of a range extender are obtained, and the first starting charge state of the range extender associated with the target vehicle is obtained; under the condition that the accumulated charging frequency is smaller than or equal to a first preset frequency, based on a day number interval in which the running day number of the range extender is located, a charge state adjusting mode corresponding to the day number interval is adopted to adjust the first starting charge state, and a second starting charge state of the range extender is obtained, the state-of-charge adjustment mode comprises constant state-of-charge adjustment and upward adjustment; and in the next mileage period, if the charge state of the target vehicle is smaller than the second starting charge state, a range extender of the target vehicle is controlled to be started. By adopting the scheme of the embodiment, the control accuracy of the range extender of the vehicle is improved.

Description

Technical Field

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

[0002] With the development of electric vehicle technology, in order to meet the requirements such as extending the driving range of electric vehicles, range extenders have emerged. The range extender generates electricity through an internal combustion engine to provide energy for electric vehicles, including replenishing energy for the battery to extend the driving range. An electric vehicle equipped with a range extender is also called an extended-range electric vehicle. When the battery power is insufficient, other energy sources (such as gasoline) are used through the range extender for power supply. The working modes of an extended-range electric vehicle can include a pure electric mode and a range extender mode. When the battery power is sufficient, the extended-range electric vehicle can preferentially be in the pure electric mode and rely on electric drive. When the state of charge SOC (State of Charge) of the battery drops to a certain threshold (this threshold is also called the starting state of charge or starting SOC of the range extender), the extended-range electric vehicle is in the range extender mode, and the internal combustion engine starts to operate as a generator, and the generated electric energy is preferentially supplied to the motor to drive the vehicle.

[0003] In the related art, when setting the starting state of charge of the range extender, usually a corresponding starting state of charge is set for each operating mode of the vehicle. However, the pre-set starting state of charge cannot fully apply to the actual driving process of the vehicle and the user's driving habits, and there is a need to improve the control method of the range extender. Summary of the Invention

[0004] Based on this, it is necessary to provide a range extender control method, a range extender control device, a range extender controller, a computer-readable storage medium, and a computer program product that can improve the control accuracy of the range extender for the above technical problems.

[0005] In a first aspect, the present application provides a range extender control method. The method includes:

[0006] Obtain the cumulative number of charging times and the number of days the range extender runs within the current mileage cycle of the target vehicle, and the first starting state of charge of the range extender associated with the target vehicle;

[0007] When the cumulative number of charging times is less than or equal to the first preset number, based on the number of days interval in which the number of days the range extender runs, adopt a charge state adjustment method corresponding to the number of days interval to adjust the first starting state of charge to obtain the second starting state of charge of the range extender. The charge state adjustment methods include remaining unchanged and adjusting upward;

[0008] In the next mileage cycle, if the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start.

[0009] In some embodiments, if the state of charge of the target vehicle is less than the second starting state of charge, controlling the range extender of the target vehicle to start includes:

[0010] When the speed of the target vehicle is greater than the first preset speed and the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start in the first mode.

[0011] In some embodiments, the method further includes:

[0012] Determine a third starting state of charge associated with the second starting state of charge, where the third starting state of charge is less than the second starting state of charge;

[0013] In the next mileage cycle, when the state of charge of the target vehicle is less than the third starting state of charge, control the range extender of the target vehicle to start in the second mode.

[0014] In some embodiments, the method further includes:

[0015] Determine a target exit state of charge associated with the third starting state of charge, where the target exit state of charge is less than the second starting state of charge and greater than the third starting state of charge;

[0016] In the next mileage cycle, after controlling the range extender of the target vehicle to start in the second mode, when the state of charge of the target vehicle is greater than the target exit state of charge, control the range extender of the target vehicle to exit the second mode.

[0017] In some embodiments, the method further includes:

[0018] Obtain the third starting state of charge associated with the second starting state of charge by looking up the mapping relationship between the second starting state of charge and the third starting state of charge;

[0019] Or

[0020] Based on the state of charge interval where the second starting state of charge is located, subtract the absolute value of the first preset value corresponding to the state of charge interval from the second starting state of charge to obtain the third starting state of charge associated with the second starting state of charge, where the larger the value of the state of charge interval, the larger the absolute value of the first preset value corresponding to the state of charge interval.

[0021] In some embodiments, there are multiple days intervals, and each days interval corresponds to an increase ratio respectively, where the larger the value of the days interval, the larger the increase ratio corresponding to the days interval;

[0022] Adjust the first starting state of charge using a state of charge adjustment method corresponding to a number of days interval to obtain a second starting state of charge of the range extender, including:

[0023] Increase the first starting state of charge by the increase ratio corresponding to the number of days interval to obtain the second starting state of charge of the range extender.

[0024] In some embodiments, the number of days interval includes a first number of days interval, a second number of days interval, a third number of days interval, and a fourth number of days interval:

[0025] The upper limit value of the first number of days interval is less than the first number of days value, and the increase ratio corresponding to the first number of days interval is 0;

[0026] The second number of days interval is greater than or equal to the first number of days value and less than the second number of days value, and the increase ratio corresponding to the second number of days interval is the first increase ratio;

[0027] The third number of days interval is greater than or equal to the second number of days value and less than the third number of days value, and the increase ratio corresponding to the third number of days interval is the second increase ratio, and the absolute value of the second increase ratio is greater than the absolute value of the first increase ratio;

[0028] The fourth number of days interval is greater than or equal to the third number of days value, and the increase ratio corresponding to the fourth number of days interval is the third increase ratio, and the absolute value of the third increase ratio is greater than the absolute value of the second increase ratio.

[0029] In some embodiments, the method further includes:

[0030] If the single - run mileage of the range extender within a day is greater than the preset mileage, increase the number of days of range extender operation by 1.

[0031] In some embodiments, the method further includes:

[0032] When the cumulative number of charging times is greater than the first preset number and less than the second preset number, use the first starting state of charge as the second starting state of charge;

[0033] When the cumulative number of charging times is greater than or equal to the second preset number, based on the number of times interval where the cumulative number of charging times is located, decrease the first starting state of charge using the downward adjustment parameter corresponding to the number of times interval to obtain the second starting state of charge of the range extender.

[0034] In some embodiments, there are multiple number of times intervals, and each number of times interval corresponds to a downward adjustment ratio respectively, where the larger the value of the number of times interval, the larger the downward adjustment ratio corresponding to the number of times interval;

[0035] Decrease the first starting state of charge using the downward adjustment parameter corresponding to the number of times interval to obtain the second starting state of charge of the range extender, including:

[0036] Lower the first starting state of charge by the down - adjustment ratio corresponding to the number - of - times interval to obtain the second starting state of charge of the range extender.

[0037] In some embodiments, the number - of - times interval includes a first number - of - times interval and a second number - of - times interval:

[0038] The first number - of - times interval is greater than or equal to a second preset number of times and less than or equal to a third preset number of times, and the upward - adjustment ratio corresponding to the first number - of - times interval is the first down - adjustment ratio;

[0039] The second number - of - times interval is greater than the third preset number of times, the down - adjustment ratio corresponding to the second number - of - times interval is the second down - adjustment ratio, and the absolute value of the second down - adjustment ratio is greater than the absolute value of the first down - adjustment ratio.

[0040] In some embodiments, the method further includes:

[0041] When the state - of - charge value obtained by adjusting the first starting state of charge using the state - of - charge adjustment method corresponding to the number - of - days interval is greater than the upper - limit state - of - charge threshold, determine the upper - limit state - of - charge threshold as the second starting state of charge.

[0042] In some embodiments, the method further includes:

[0043] When the state - of - charge value obtained by down - adjusting the first starting state of charge using the down - adjustment parameter corresponding to the number - of - times interval is less than the lower - limit state - of - charge threshold, determine the lower - limit state - of - charge threshold as the second starting state of charge.

[0044] In a second aspect, the present application also provides a range - extender control device. The device includes:

[0045] A data acquisition module, configured to acquire the cumulative number of charging times and the number of days of range - extender operation of the target vehicle within the current mileage cycle, and the first starting state of charge of the range extender associated with the target vehicle;

[0046] A starting - state - of - charge adjustment module, configured to, when the cumulative number of charging times is less than or equal to a first preset number of times, based on the number - of - days interval in which the number of days of range - extender operation is located, adopt a state - of - charge adjustment method corresponding to the number - of - days interval to adjust the first starting state of charge to obtain the second starting state of charge of the range extender, and the state - of - charge adjustment method includes remaining unchanged and upward adjustment;

[0047] A range - extender control module, configured to, in the next mileage cycle, if the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start.

[0048] In a third aspect, the present application further provides a range extender controller. The range extender controller includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of the range extender control method in any of the above embodiments are implemented.

[0049] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the steps of the range extender control method in any of the above embodiments are implemented.

[0050] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the range extender control method in any of the above embodiments are implemented.

[0051] For the above range extender control method, range extender control device, range extender controller, computer-readable storage medium, and computer program product, by counting the cumulative number of charging times and the number of days the range extender runs within the current mileage cycle, when the cumulative number of charging times is less than or equal to the first preset number, the corresponding state-of-charge adjustment method is determined according to the number-of-days interval in which the number of days the range extender runs, and the adjustment methods are maintaining the status quo and increasing. Since when the cumulative number of charging times is less than or equal to the first preset number, it indicates that the number of times the target vehicle is charged within the current mileage cycle is small, that is, the battery has not been replenished with electrical energy by charging or has only been replenished with electrical energy a small number of times, and the battery state is normal or there may be a situation where the power drops quickly due to not charging in time. Therefore, by maintaining the status quo or increasing, the first starting state of charge in the current mileage cycle is adjusted to obtain the second starting state of charge in the next mileage cycle. When determining the second starting state of charge in the next mileage cycle, the adjustment is made by combining the number of times the battery of the current vehicle is charged and the number of days the range extender runs. Since the number of days the range extender runs is related to the actual driving process of the vehicle, and the cumulative number of charging times of the battery is related to the user's driving habits, the starting state of charge of the range extender is adjusted on the basis of considering the actual driving process of the vehicle and the user's driving habits, and the starting of the range extender is controlled with the adjusted starting state of charge, thereby improving the control accuracy of the range extender of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic flowchart of a range extender control method in an embodiment;

[0053] Figure 2 It is a schematic flowchart of a range extender control method in another embodiment;

[0054] Figure 3 It is a schematic flowchart of a range extender control method in yet another embodiment;

[0055] Figure 4 Schematic flowchart of the range extender control method for another embodiment;

[0056] Figure 5 Schematic flowchart of the range extender control method for another embodiment;

[0057] Figure 6 Schematic flowchart of the range extender control method in a specific example;

[0058] Figure 7 Structural block diagram of the range extender control device in an embodiment. Detailed implementation manners

[0059] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0060] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only used as examples and cannot be used to limit the protection scope of the present application.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0062] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two unless otherwise specifically defined.

[0063] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0064] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this document, the character " / " generally represents an "or" relationship between the associated objects before and after.

[0065] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0066] It should be noted that the information (including but not limited to vehicle speed, driving mileage, real-time SOC, first starting state of charge, second starting state of charge, running days of the range extender, and cumulative charging times) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties, and the acquisition, transmission, storage, use, and processing of the relevant data all comply with the relevant provisions of national laws and regulations. In the embodiments of the present application, some industry-existing solutions such as certain software, components, models, etc. may be mentioned, and they should be considered exemplary. The purpose is only to illustrate the feasibility in the implementation of the technical solution of the present application, but it does not mean that the applicant has already or necessarily used this solution.

[0067] For an electric vehicle equipped with a range extender, since the range extender converts fuel into electrical energy to directly drive the vehicle or charge the battery, the timing of the range extender's startup will affect the driving experience of the electric vehicle. And the setting of the starting state of charge of the range extender (i.e., starting SOC), as a parameter indicating when the range extender starts, will directly have an important impact on the driving experience of the electric vehicle. In the related art, the starting SOC of the vehicle's range extender is preset based on experience or relevant test results. However, during the actual use of the vehicle, for vehicles of the same type, even if the same starting SOC is set, there are differences in the driving experience brought about by the startup of the range extender.

[0068] It has been found through research that the actual driving processes of different vehicles are different, and different driving users have different vehicle usage habits, and these will all affect the SOC of the vehicle battery. It has been found through research that different actual driving processes and vehicle usage habits will result in differences in the charging times of the vehicle battery and the running days of the vehicle's range extender. Therefore, the starting SOC of the vehicle's range extender can be adjusted by combining the charging times of the vehicle battery and the running days of the vehicle's range extender to improve the accuracy of controlling the range extender and thereby improve the driving experience.

[0069] Accordingly, an embodiment of the present application provides a range extender control method, which can be applied to an electric vehicle equipped with a range extender. Among them, the range extender control method can be executed by a controller of the electric vehicle. The controller can be a range extender controller, or a vehicle control unit (VCU) of the electric vehicle, or can be executed by the cooperation of the vehicle control unit and the range extender controller, or can also be executed by other controllers provided in the electric vehicle or the cooperation between controllers.

[0070] In one embodiment, as Figure 1 shown, a range extender control method is provided, including the following steps:

[0071] Step S102: Obtain the cumulative charging times and the number of days the range extender runs within the current mileage cycle of the target vehicle, and the first starting state of charge of the range extender associated with the target vehicle.

[0072] The target vehicle refers to an electric vehicle equipped with a range extender, and the specific vehicle type of the electric vehicle is not limited.

[0073] The mileage cycle refers to the mileage interval in which the total driving mileage of the target vehicle is located. In practical applications, the driving mileage of the vehicle can be divided into several mileage cycles, and each mileage cycle has corresponding starting mileage and ending mileage. Among them, the total driving mileage of the target vehicle can refer to the total driving mileage continuously recorded after the target vehicle leaves the factory. In some examples, it can also be the total driving mileage recorded again after the battery of the target vehicle is replaced or other initialization of the total driving mileage, so that the statistics of the total driving mileage and the division of the mileage interval can better conform to the state of the battery of the target vehicle.

[0074] The current mileage cycle refers to the mileage cycle in which the current total driving mileage of the target vehicle is located, that is, the current total driving mileage of the target vehicle is between the starting mileage and the ending mileage of a certain mileage cycle. At this time, this mileage cycle is the current mileage cycle of the target vehicle.

[0075] Among them, the first starting state of charge of the range extender associated with the target vehicle is the threshold value of the state of charge used to determine whether to start the range extender within the current mileage cycle, that is, the starting SOC of the current mileage cycle. It can be used to determine whether to start the range extender within the current mileage cycle, or it can be the initial threshold value of the starting state of charge used to determine whether to start the range extender within the current mileage cycle. In related examples, within the current mileage cycle, when the state of charge of the battery of the target vehicle is less than the first starting state of charge, the range extender of the target vehicle can be controlled to start.

[0076] The cumulative charging times within the current mileage cycle refer to the number of times the battery of the target vehicle has been charged cumulatively during the total mileage of the target vehicle in the current mileage cycle. In some examples, when the single charging duration is greater than or equal to a preset duration, one charging time is accumulated, and when the single charging duration is less than the preset duration, it is not counted as a charging time, so as to improve the accuracy of the recorded cumulative charging times.

[0077] Among them, the preset duration can be defined differently, and the same preset duration can be set for different charging methods. In the related embodiments of the present application, for different charging methods, the preset duration can also be set differently. For example, the preset duration corresponding to the fast charging process can be less than the preset duration corresponding to the slow charging process, but it is not limited thereto, so that one charging time is recorded only after the battery is charged with the preset duration of electricity.

[0078] In other examples, when the single charging power is greater than or equal to a preset power, one charging time is accumulated, so that one charging time is recorded only after a certain amount of power is charged into the battery, and the accuracy of the recorded cumulative charging times is improved.

[0079] The number of days the range extender runs within the current mileage cycle refers to the number of days the range extender of the target vehicle runs during the total mileage of the target vehicle in the current mileage cycle. In some examples, when the range extender of the target vehicle is in the on state and the single running mileage of the target vehicle in one day is greater than the preset mileage, the number of days the range extender runs is incremented by 1. That is, among the running mileages corresponding to each start-up process of the range extender of the target vehicle in one day, when there is a single running mileage greater than the preset mileage, the number of days the range extender runs is incremented by 1, that is, one running day is recorded. Among them, the maximum number of running days recorded in one day does not exceed 1, so that at most one running day is recorded every day, that is, only one day is recorded, so as to improve the accuracy of the obtained number of days the range extender runs.

[0080] Accordingly, when the range extender is in the start state and the single running mileage of the target vehicle in one day is greater than the preset mileage, the number of days the range extender runs is incremented by 1, avoiding the error caused by the short-term start of the range extender during vehicle detection, maintenance, etc. to the number of days the range extender runs, which is beneficial to improving the accuracy of the obtained number of days the range extender runs and further helps to improve the accuracy of the control of the range extender of the vehicle.

[0081] Among them, the specific setting method of the preset mileage is not limited, and it can be determined in combination with the test process. In the related embodiments of the present application, the preset mileage can be set to 2 kilometers (KM, kilometer), 3 KM or other values, but it is not limited thereto.

[0082] Step S104: When the cumulative charging times is less than or equal to the first preset number of times, based on the day interval in which the operating days of the range extender are located, adopt the state of charge adjustment method corresponding to the day interval to adjust the first starting state of charge, and obtain the second starting state of charge of the range extender. The state of charge adjustment methods include remaining unchanged and increasing.

[0083] The day interval refers to the interval divided for the operating days of the range extender. Each day interval can be set with a corresponding state of charge adjustment method. The state of charge adjustment method refers to the method of adjusting the first starting state of charge in the current mileage interval. Different day intervals can correspond to different state of charge adjustment methods. Among them, different state of charge adjustment methods can refer to different adjustment directions. For example, remaining unchanged and increasing. In some examples, different state of charge adjustment methods can also include different adjustment amplitudes. For example, the state of charge adjustment methods corresponding to two day intervals are both increasing, but the increasing amplitude or the specific adjustment value in the state of charge adjustment method is different, etc., but not limited to this.

[0084] Among them, remaining unchanged means keeping the first starting state of charge unchanged, that is, not adjusting the first starting state of charge and directly using the first starting state of charge as the second starting state of charge.

[0085] Increasing means increasing the value of the first starting state of charge. Taking the first starting state of charge as 30% as an example, the second starting state of charge obtained after increasing is greater than 30%.

[0086] The actual obtained operating days of the range extender can be in different day intervals, and then the state of charge adjustment method corresponding to this day interval can be used to adjust the first starting state of charge to obtain the second starting state of charge.

[0087] The second starting state of charge refers to the data obtained after adjusting the first starting state of charge. In practical applications, the second starting state of charge can be used as the starting state of charge of the range extender in the next mileage cycle.

[0088] Step S106: In the next mileage cycle, if the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start.

[0089] When the driving mileage of the target vehicle is in the next mileage cycle, the state of charge of the battery of the target vehicle can be obtained in real time, and this state of charge is compared with the second starting state of charge of the target vehicle in the next mileage cycle. When the real-time state of charge is less than the second starting state of charge, the range extender of the target vehicle can be controlled to start.

[0090] The method of controlling the range extender of the target vehicle to start is not limited. For example, the range extender controller generates corresponding control instructions / control signals, and controls the range extender of the target vehicle to be in the starting state through the control instructions / control signals. For another example, the domain controller or vehicle control unit (VCU) of the target vehicle generates control instructions / control signals, and sends the control instructions / control signals to the range extender controller to control the range extender of the target vehicle to be in the starting state. In other embodiments, the range extender of the target vehicle can also be controlled to start by other means, and the embodiments of the present application do not make specific display in this regard.

[0091] In the above range extender control method, by counting the cumulative charging times and the number of days the range extender runs within the current mileage cycle, when the cumulative charging times are less than or equal to the first preset number of times, the corresponding state of charge adjustment method is determined according to the day interval in which the number of days the range extender runs, and the adjustment methods are maintaining unchanged and upward adjustment. Since when the cumulative charging times are less than or equal to the first preset number of times, it indicates that the number of times the target vehicle is charged within the current mileage cycle is small, that is, the battery has not been replenished with electrical energy by charging or has only been replenished with electrical energy a small number of times, and there is a possibility that the battery state is normal but the power drops quickly due to lack of timely charging. Therefore, by maintaining unchanged or upward adjustment, the first starting state of charge in the current mileage cycle is adjusted to obtain the second starting state of charge in the next mileage cycle, so that when determining the second starting state of charge in the next mileage cycle, the adjustment is made by combining the number of times the battery of the current vehicle is charged and the number of days the range extender runs. Since the number of days the range extender runs is related to the actual driving process of the vehicle, and the cumulative charging times of the battery are related to the user's vehicle use habits, the starting state of charge of the range extender is adjusted on the basis of considering the actual driving process of the vehicle and the user's vehicle use habits, and the starting of the range extender is controlled by the adjusted starting state of charge, thereby improving the control accuracy of the range extender of the vehicle.

[0092] Reference Figure 2 As shown, in some embodiments, if the state of charge of the target vehicle is less than the second starting state of charge in step S106, controlling the range extender of the target vehicle to start may include:

[0093] Step S1061: When the vehicle speed of the target vehicle is greater than the first preset vehicle speed and the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start in the first mode.

[0094] The vehicle speed of the target vehicle refers to the speed at which the target vehicle travels, that is, the distance traveled by the target vehicle within a unit time.

[0095] The method for obtaining the vehicle speed of the target vehicle is not limited. For example, it can be obtained by obtaining the rotational speed of the wheels of the target vehicle and calculating the vehicle speed based on the rotational speed of the wheels, but it is not limited to this. During the driving process of the target vehicle, the vehicle speed is usually measured and displayed on the instrument panel of the target vehicle to provide a reference for the user's driving operation of the target vehicle. Therefore, in related examples, the vehicle speed that has been calculated by the relevant controller of the target vehicle can also be read to obtain the vehicle speed of the target vehicle. In other examples, the vehicle speed of the target vehicle can also be obtained by reading the data of the instrument panel of the target vehicle, etc., but it is not limited to this.

[0096] The specific value of the first preset vehicle speed is not limited, as long as it can be determined that the target vehicle is in a driving state based on the first preset vehicle speed.

[0097] When the vehicle speed of the target vehicle is greater than the first preset vehicle speed, it indicates that the target vehicle is in a driving state. When the state of charge of the target vehicle is less than the second starting state of charge, it indicates that the state of charge of the target vehicle has been reduced to the level at which the range extender can be started. Therefore, the range extender of the target vehicle can be controlled to start to provide energy for the target vehicle through the range extender to achieve energy replenishment during the vehicle driving process.

[0098] The first mode is the operating mode of the range extender of the target vehicle when the target vehicle is in a driving state. In the first mode, the operating parameters of the range extender can be set corresponding to the vehicle driving state. Some possible operating parameters can include: operating power and operating torque, etc., but it is not limited to this.

[0099] Accordingly, when controlling the range extender, the range extender of the target vehicle will be controlled to start only when both the vehicle speed of the target vehicle is greater than the first preset vehicle speed and the state of charge of the target vehicle is less than the second starting state of charge, and it is started in the first mode, realizing the adaptive adjustment of the starting state of charge during the driving process of the target vehicle. Accordingly, the function effect of replenishing energy for the whole vehicle during the vehicle driving process can be achieved.

[0100] Reference Figure 3 As shown, in some embodiments, the method for controlling the range extender may further include:

[0101] Step S1051: Determine a third starting state of charge associated with the second starting state of charge, where the third starting state of charge is less than the second starting state of charge.

[0102] At this time, the above step S106 may further include:

[0103] Step S1062: In the next mileage cycle, when the state of charge of the target vehicle is less than the third starting state of charge, control the range extender of the target vehicle to start in the second mode.

[0104] Among them, the third starting state of charge is the state of charge obtained based on the second starting state of charge. In practical applications, the third starting state of charge can be used as the starting state of charge of the range extender when the vehicle speed of the target vehicle is relatively low or even 0 (i.e., the vehicle is in a stationary and non-driving state) during the next mileage cycle.

[0105] Among them, when the state of charge of the target vehicle is less than the third starting state of charge and the range extender of the target vehicle is controlled to start in the second mode, the vehicle speed of the target vehicle can be any value. That is, when the state of charge of the target vehicle is less than the third starting state of charge, it is not necessary to care about the vehicle speed of the target vehicle. Even if the vehicle speed of the target vehicle is 0, the range extender of the target vehicle can be controlled to start to achieve the forced start of the range extender when the target vehicle is in a stationary state, so as to provide energy for the target vehicle.

[0106] The second mode is the working mode of the range extender of the target vehicle in a low-speed state, where the low-speed state includes a stationary state, and the stationary state includes a state where the vehicle speed is 0. In the second mode, the working parameters of the range extender can be set corresponding to the low-speed or stationary state of the vehicle. Some possible working parameters can include: working power, working torque, etc., which are not limited to this. It can be understood that the working parameters in the first mode and the working parameters in the second mode can be set differently, where different can mean that each working parameter is different, or only some working parameters are different.

[0107] Accordingly, after determining the second starting state of charge of the target vehicle during driving, a smaller third starting state of charge can also be determined accordingly. When the state of charge of the target vehicle is less than the third starting state of charge, regardless of the vehicle speed of the target vehicle, the range extender of the target vehicle will be controlled to start, and it will start in the second mode. Thus, even when the vehicle speed of the target vehicle is extremely low or even 0, the start of the target range extender can be achieved, realizing the adaptive adjustment of the starting state of charge of the target vehicle in a static state. Accordingly, the forced power generation of the range extender of the vehicle in a static state can be realized to supplement the energy of the vehicle.

[0108] Reference Figure 4 As shown, in some embodiments, the control method of the range extender may further include:

[0109] Step S1052: Determine a target exit state of charge associated with the third starting state of charge, where the target exit state of charge is less than the second starting state of charge and greater than the third starting state of charge.

[0110] At this time, the above step S106 may further include:

[0111] Step S1063: In the next mileage cycle, after controlling the range extender of the target vehicle to start in the second mode, when the state of charge of the target vehicle is greater than the target exit state of charge, control the range extender of the target vehicle to exit the second mode.

[0112] The target exit state of charge is the threshold of the state of charge for determining whether the range extender exits the second mode in the current mileage cycle.

[0113] Accordingly, after controlling the range extender to start in the second mode when the vehicle is static, when the state of charge of the target vehicle rises to the target exit state of charge, by controlling the range extender of the target vehicle to exit the second mode, the range extender can exit the forced power generation process to meet the requirements for the range extender.

[0114] The determination methods of the above-mentioned third start state of charge and target exit state of charge are not limited. Several methods will be exemplified below.

[0115] In some embodiments, the method further includes:

[0116] By looking up the mapping relationship between the second start state of charge and the third start state of charge, obtain the third start state of charge associated with the second start state of charge.

[0117] The mapping relationship may include the corresponding relationship between the second start state of charge and the third start state of charge. Therefore, after obtaining the second start state of charge, by looking up the mapping relationship, the third start state of charge associated with the second start state of charge can be obtained.

[0118] The specific form of the mapping relationship is not limited, as long as it can reflect the corresponding relationship between the second start state of charge and the third start state of charge. For example, in some examples, the mapping relationship between the second start state of charge and the third start state of charge can be stored in a mapping relationship table.

[0119] Accordingly, the third start state of charge associated with the second start state of charge can be obtained by setting the mapping relationship and looking it up, which is simple and convenient.

[0120] In some embodiments, the method further includes:

[0121] By looking up the mapping relationship between the third start state of charge and the target exit state of charge, obtain the target exit state of charge associated with the third start state of charge.

[0122] The mapping relationship may include the corresponding relationship between the third start state of charge and the target exit state of charge. Therefore, after obtaining the third start state of charge, by looking up the mapping relationship, the target exit state of charge associated with the third start state of charge can be obtained.

[0123] Among them, the specific form of the mapping relationship is not limited, as long as it can reflect the third starting state of charge and the target state of charge to exit. For example, in some examples, the mapping relationship between the third starting state of charge and the target state of charge to exit can be stored in a mapping relationship table.

[0124] Taking the storage of the mapping relationship through a mapping relationship table as an example, the mapping relationship between the second starting state of charge and the third starting state of charge, and the mapping relationship between the third starting state of charge and the target state of charge to exit can be stored in different mapping relationship tables, or can be reflected in the same mapping relationship table, that is, in the same mapping relationship table, the mapping relationships among the second starting state of charge, the third starting state of charge, and the target state of charge to exit are included. Thus, after obtaining the second starting state of charge, by searching the same mapping relationship table, the associated third starting state of charge and the target state of charge to exit can be obtained, which can improve the efficiency and convenience of query while reducing the storage space.

[0125] Taking the mapping relationship between the second starting state of charge and the third starting state of charge, and the mapping relationship between the third starting state of charge and the target state of charge to exit in the same mapping closed table as an example, a partial example of the mapping relationship table in a specific example can be as shown in Table 1 below:

[0126] Table 1

[0127]

[0128] In other examples, the third starting state of charge can be obtained by calculation based on the second starting state of charge. At this time, the range extender control method further includes:

[0129] Based on the state of charge interval where the second starting state of charge is located, subtract the absolute value of the first preset value corresponding to the state of charge interval from the second starting state of charge to obtain the third starting state of charge associated with the second starting state of charge, where the larger the value of the state of charge interval, the larger the absolute value of the first preset value corresponding to the state of charge interval.

[0130] The state of charge interval refers to the interval divided for the second starting state of charge, and each state of charge interval can be set with a corresponding first preset value. The first preset value refers to the value that needs to be adjusted for the second starting state of charge when obtaining the third starting state of charge based on the second starting state of charge. If the first preset value is recorded as a positive value greater than 0, the third starting state of charge can be obtained by subtracting the first preset value from the second starting state of charge. If the first preset value is recorded as a negative value less than 0, the third starting state of charge can be obtained by adding the second starting state of charge and the first preset value.

[0131] Among them, when obtaining the target exit state of charge, it can be obtained based on the second starting state of charge or the third starting state of charge.

[0132] Taking obtaining the target exit state of charge based on the second starting state of charge as an example, in some examples, the method further includes:

[0133] Based on the state of charge interval where the second starting state of charge is located, reduce the absolute value of the second preset value corresponding to the state of charge interval of the second starting state of charge to obtain the target exit state of charge associated with the third starting state of charge. Among them, the larger the value of the state of charge interval, the larger the absolute value of the second preset value corresponding to the state of charge interval, and the absolute value of the first preset value is greater than the absolute value of the second preset value.

[0134] The second preset value refers to the value that needs to be adjusted for the second starting state of charge when obtaining the target exit state of charge based on the second starting state of charge. If the second preset value is recorded as a positive value greater than 0, the target exit state of charge can be obtained by subtracting the second preset value from the second starting state of charge. If the second preset value is recorded as a negative value less than 0, the target exit state of charge can be obtained by adding the second preset value to the second starting state of charge.

[0135] In some specific examples, the difference between the absolute value of the second preset value corresponding to each state of charge interval and the absolute value of the first preset value corresponding to the state of charge interval can be the same or different. In the relevant embodiments of the present application, it can be set to be the same, that is, the difference between the absolute value of the second preset value corresponding to each state of charge interval and the absolute value of the first preset value corresponding to the state of charge interval is the same, so as to achieve that no matter what state the range extender is in, after forced startup, a certain amount of electric charge is replenished to the battery before exiting the second mode of the range extender.

[0136] Taking obtaining the target exit state of charge based on the third starting state of charge as an example, in some examples, the method further includes:

[0137] Add the absolute value of the third preset value to the third starting state of charge to obtain the target exit state of charge. Among them, the absolute value of the third preset value is less than the absolute value of the first preset value.

[0138] The third preset value refers to the value that needs to be adjusted for the third starting state of charge when obtaining the target exit state of charge based on the third starting state of charge. If the third preset value is recorded as a positive value greater than 0, the target exit state of charge can be obtained by adding the third preset value to the third starting state of charge. If the third preset value is recorded as a negative value less than 0, the target exit state of charge can be obtained by subtracting the third preset value from the third starting state of charge.

[0139] Among them, the absolute values of the third preset values corresponding to different third starting state of charge can be the same or different. In the related embodiments of the present application, the absolute values of the third preset values corresponding to different third starting state of charge are set to be the same, so as to realize that after the range extender is forced to start and the same amount of power is supplemented to the battery, the second mode of the range extender is exited.

[0140] Accordingly, by setting a corresponding first preset value for the state of charge interval where the second starting state of charge is located, the second starting state of charge is adjusted downward accordingly, and the larger the set state of charge interval is, the larger the absolute value of the first preset value corresponding to the state of charge interval is, that is, the greater the downward adjustment amplitude of the second starting state of charge is. It can enable the range extender to be forced to start with a relatively low third starting state of charge when the second starting state of charge is relatively high, which helps to further meet the energy requirements of the vehicle in a static state.

[0141] In some embodiments, there can be multiple days intervals, and each days interval corresponds to an upward adjustment ratio, where the larger the value of the days interval is, the larger the upward adjustment ratio corresponding to the days interval is.

[0142] At this time, the above-mentioned method of adjusting the first starting state of charge by using the state of charge adjustment method corresponding to the days interval to obtain the second starting state of charge of the range extender includes:

[0143] The first starting state of charge is adjusted upward by the upward adjustment ratio corresponding to the days interval to obtain the second starting state of charge of the range extender.

[0144] Accordingly, by setting multiple different days intervals, each days interval corresponding to a different upward adjustment ratio, when the number of days the range extender runs is larger, the upward adjustment ratio for adjusting the first starting state of charge is also larger. Since the more the range extender runs, it means that the range extender starts more times, and the number of times the state of charge of the battery of the target vehicle drops to the starting state of charge of the range extender is more, and the amplitude or risk of power reduction will be greater. Therefore, the upward adjustment ratio can be set larger to meet the energy requirements of the target vehicle.

[0145] The specific setting of the days interval and the corresponding setting of the upward adjustment ratio can be set according to the actual technical needs. In some specific examples of the present application, 4 days intervals can be set. At this time, the days interval includes the first days interval, the second days interval, the third days interval and the fourth days interval. At this time:

[0146] The upper limit value of the first days interval is less than the first day value, and the upward adjustment ratio corresponding to the first days interval is 0;

[0147] The second days interval is greater than or equal to the first day value and less than the second day value, and the upward adjustment ratio corresponding to the second days interval is the first upward adjustment ratio;

[0148] The third number interval is greater than or equal to the second value and less than the third value, and the corresponding upward adjustment ratio of the third number interval is the second upward adjustment ratio, and the absolute value of the second upward adjustment ratio is greater than the absolute value of the first upward adjustment ratio;

[0149] The fourth number interval is greater than or equal to the third value, and the corresponding upward adjustment ratio of the fourth number interval is the third upward adjustment ratio, and the absolute value of the third upward adjustment ratio is greater than the absolute value of the second upward adjustment ratio.

[0150] The specific values of the first value, the second value, the third value, the first upward adjustment ratio, the second upward adjustment ratio, and the third upward adjustment ratio can be set in combination with specific technical requirements. In the specific example of this application, the first value, the second value, the third value, the first upward adjustment ratio, the second upward adjustment ratio, and the third upward adjustment ratio can be 5 days, 10 days, 15 days, 5%, 10%, and 15% respectively. It can be understood that other different settings can also be made in other embodiments.

[0151] Reference Figure 5 As shown, in related embodiments, the range extender control method further includes:

[0152] Step S107: When the cumulative number of charging times is greater than the first preset number and less than the second preset number, use the first starting state of charge as the second starting state of charge.

[0153] Step S108: When the cumulative number of charging times is greater than or equal to the second preset number, based on the number interval where the cumulative number of charging times is located, use the corresponding downward adjustment parameter of the number interval to downwardly adjust the first starting state of charge to obtain the second starting state of charge of the range extender.

[0154] The number interval refers to the interval divided for the cumulative number of charging times of the target vehicle within a mileage cycle, and each number interval can be set with a corresponding downward adjustment parameter. The downward adjustment parameter refers to the downward adjustment amplitude or downward adjustment value for downwardly adjusting the first starting state of charge.

[0155] Accordingly, when the cumulative number of charging times is greater than the first preset number and less than the second preset number, it indicates that the target vehicle has carried out a relatively normal process of charging the battery within the mileage cycle, and the process of reducing the electrical energy of the battery of the target vehicle and replenishing the electrical energy is within the normal charge and discharge range. Therefore, the starting state of charge of the range extender can be maintained unchanged, and the first starting state of charge of the current mileage cycle is directly used as the second starting state of charge of the next mileage cycle.

[0156] When the cumulative number of charging times is greater than or equal to the second preset number of times, it indicates that the target vehicle has carried out a relatively large number of battery charging processes within the mileage cycle. The electric energy of the battery of the target vehicle is relatively sufficient, and the battery of the target vehicle is replenished with energy in a timely manner. Therefore, by reducing the first starting state of charge, the range extender can be started when the battery power is relatively low, which helps to further improve the accuracy of controlling the range extender.

[0157] Among them, there can be multiple number intervals. Taking the downward adjustment parameter corresponding to each number interval as the downward adjustment ratio as an example, each number interval corresponds to a downward adjustment ratio, and the larger the value of the number interval, the larger the downward adjustment ratio corresponding to the number interval.

[0158] At this time, the above-mentioned downward adjustment of the first starting state of charge by using the downward adjustment parameter corresponding to the number interval to obtain the second starting state of charge of the range extender includes:

[0159] Reducing the first starting state of charge by the downward adjustment ratio corresponding to the number interval to obtain the second starting state of charge of the range extender.

[0160] Accordingly, by setting multiple different number intervals, each number interval corresponding to a different downward adjustment ratio, when the cumulative number of charging times is larger, the downward adjustment ratio for adjusting the first starting state of charge is also larger. Since the more the cumulative number of charging times, the more the number of times the battery of the target vehicle is charged, the more electric energy is supplemented to the target battery, and the less likely the electric energy is reduced to a low power state within the mileage cycle. Therefore, the downward adjustment ratio can be set larger to provide energy for the target vehicle by the battery as much as possible to meet the energy requirements of the target vehicle.

[0161] Specific number intervals and corresponding downward adjustment ratios can be set according to actual technical needs. In some specific examples of this application, 2 number intervals can be set. At this time, the number intervals include the first number interval and the second number interval. At this time:

[0162] The first number interval is greater than or equal to the second preset number of times and less than or equal to the third preset number of times, and the downward adjustment ratio corresponding to the first number interval is the first downward adjustment ratio;

[0163] The second number interval is greater than the third preset number of times, and the downward adjustment ratio corresponding to the second number interval is the second downward adjustment ratio, and the absolute value of the second downward adjustment ratio is greater than the absolute value of the first downward adjustment ratio.

[0164] The specific values of the second preset number of times, the third preset number of times, the first reduction ratio, and the second reduction ratio can be set in combination with specific technical requirements. In a specific example of this application, the second preset number of times, the third preset number of times, the first reduction ratio, and the second reduction ratio can be 3 times, 4 times, 5%, and 15% respectively. It can be understood that in other embodiments, other different settings can also be made.

[0165] In related embodiments of this application, the range extender control method may further include:

[0166] When the state of charge value obtained by adjusting the first starting state of charge by using the state of charge adjustment method corresponding to the number of days interval is greater than the upper state of charge threshold, the upper state of charge threshold is determined as the second starting state of charge.

[0167] Based on this embodiment, by setting an upper state of charge threshold for the starting state of charge of the range extender, when the state of charge value obtained by adjusting the first starting state of charge based on the state of charge adjustment method is greater than the upper state of charge threshold, it indicates that the obtained state of charge value is too large, and the too large state of charge value is likely to cause frequent start and stop of the range extender. Therefore, the upper state of charge threshold can be directly set as the second starting state of charge to improve the control accuracy and stability of the range extender.

[0168] In related embodiments of this application, the range extender control method may further include:

[0169] When the state of charge value obtained by reducing the first starting state of charge by using the reduction parameter corresponding to the number of times interval is less than the lower state of charge threshold, the lower state of charge threshold is determined as the second starting state of charge.

[0170] Based on this embodiment, by setting a lower state of charge threshold for the starting state of charge of the range extender, when the state of charge value obtained by reducing the first starting state of charge by using the reduction parameter corresponding to the number of times interval is less than the lower state of charge threshold, it indicates that the obtained state of charge value is too small, and the too small state of charge value is likely to cause the range extender to fail to start in time, resulting in the target vehicle being unable to replenish energy in time. Therefore, the lower state of charge threshold can be directly set as the second starting state of charge to improve the control accuracy and stability of the range extender.

[0171] Among them, the specific values of the lower state of charge threshold and the upper state of charge threshold are not limited. In related embodiments of this application, the lower state of charge threshold and the upper state of charge threshold can be set to 20% and 70% respectively, so that the starting state of charge of the range extender can be adjusted between 20% - 70%.

[0172] Based on the above embodiments, specific examples are given below for illustration. In the following examples, taking the value on the first day as 5, the value on the second day as 10, the value on the third day as 15, the first increase ratio as 5%, the second increase ratio as 10%, the third increase ratio as 15%, the first preset number of times as 1, the second preset number of times as 3, the third preset number of times as 4, the first decrease ratio as 5%, and the second decrease ratio as 15% as examples for illustration.

[0173] Reference Figure 6 As shown, in this specific example, in step S601, the cumulative charging times Fre and the number of days Day when the range extender runs, as well as the first starting state of charge SOC1 of the range extender of the target vehicle within the current mileage cycle are obtained, and steps S602, S603, S604, and S605 are entered to respectively compare the cumulative charging times Fre with the corresponding preset number of times in steps S602, S603, S604, and S605.

[0174] In step S602, the cumulative charging times Fre are compared with the first preset number of times 1 to determine whether the cumulative charging times Fre are less than or equal to the first preset number of times 1. If so, steps S606, S607, S608, and S609 are entered to further compare the number of days Day when the range extender runs with the corresponding day values respectively.

[0175] In step S603, the cumulative charging times Fre are compared with the first preset number of times 1 and the second preset number of times 3 to determine whether the cumulative charging times Fre are greater than the first preset number of times 1 and less than the second preset number of times 3, that is, whether the cumulative charging times Fre are equal to 2. If so, step S610 is entered.

[0176] In step S604, the cumulative charging times Fre are compared with the second preset number of times 3 and the third preset number of times 4 to determine whether the cumulative charging times Fre are greater than or equal to the second preset number of times 3 and less than or equal to the third preset number of times 4, that is, whether the cumulative charging times Fre are equal to 3 or 4. If so, step S614 is entered.

[0177] In step S605, the cumulative charging times Fre are compared with the third preset number of times 4 to determine whether the cumulative charging times Fre are greater than the third preset number of times 4. If so, step S615 is entered.

[0178] In step S606, the number of days Day when the range extender runs is compared with the value 5 on the first day, that is, whether the number of days Day when the range extender runs is less than the value 5 on the first day. If so, step S610 is entered.

[0179] In step S607, the extender operation days Day are compared with the value 5 on the first day and the value 10 on the second day, that is, whether the extender operation days Day are greater than or equal to the value 5 on the first day and less than the value 10 on the second day. If so, proceed to step S611.

[0180] In step S608, the extender operation days Day are compared with the value 10 on the second day and the value 15 on the third day, that is, whether the extender operation days Day are greater than or equal to the value 10 on the second day and less than the value 15 on the third day. If so, proceed to step S612.

[0181] In step S609, the extender operation days Day are compared with the value 15 on the third day, that is, whether the extender operation days Day are greater than the value 15 on the third day. If so, proceed to step S613.

[0182] In step S610, the first starting state of charge value SOC1 is maintained unchanged to obtain the second starting state of charge value SOC2, that is, the first starting state of charge value SOC1 is directly used as the second starting state of charge value SOC2.

[0183] In step S611, the first starting state of charge value SOC1 is increased by 5% to obtain the second starting state of charge value SOC2.

[0184] In step S612, the first starting state of charge value SOC1 is increased by 10% to obtain the second starting state of charge value SOC2.

[0185] In step S613, the first starting state of charge value SOC1 is increased by 15% to obtain the second starting state of charge value SOC2.

[0186] In step S614, the first starting state of charge value SOC1 is decreased by 5% to obtain the second starting state of charge value SOC2.

[0187] In step S615, the first starting state of charge value SOC1 is decreased by 15% to obtain the second starting state of charge value SOC2.

[0188] Based on Figure 6 As can be seen from the specific examples shown, in this specific example:

[0189] When the cumulative number of charging times is less than or equal to 1 and the extender operation days are less than 5, the first starting state of charge SOC1 is maintained unchanged to obtain the second starting state of charge SOC2;

[0190] When the cumulative charging times is less than or equal to 1, and the running days of the range extender is greater than or equal to 5 and less than 10, increase the first starting state of charge SOC1 by 5% to obtain the second starting state of charge SOC2;

[0191] When the cumulative charging times is less than or equal to 1, and the running days of the range extender is greater than or equal to 10 and less than 15, increase the first starting state of charge SOC1 by 10% to obtain the second starting state of charge SOC2;

[0192] When the cumulative charging times is less than or equal to 1, and the running days of the range extender is greater than or equal to 15, increase the first starting state of charge SOC1 by 15% to obtain the second starting state of charge SOC2;

[0193] When the cumulative charging times is 2, maintain the starting state of charge of the range extender unchanged without adjustment, that is, directly use the first starting state of charge SOC1 as the second starting state of charge SOC2;

[0194] When the cumulative charging times is 3 or 4, decrease the first starting state of charge SOC1 by 5% to obtain the second starting state of charge SOC2;

[0195] When the cumulative charging times is greater than 4, decrease the first starting state of charge SOC1 by 15% to obtain the second starting state of charge SOC2.

[0196] It can be seen that in the above specific examples, within a single mileage cycle of the range extender, the maximum cumulative increase in the starting state of charge is 15%, and the maximum cumulative decrease is 15%. Therefore, when adjusting the starting state of charge of the range extender, it can be adjusted within the range of 20% - 70%.

[0197] Based on the obtained second starting state of charge, the corresponding third starting state of charge and the target exit state of charge can be further determined. During the use in the next mileage cycle, when the real-time SOC of the target vehicle is less than the third starting state of charge, regardless of the speed of the target vehicle, the range extender is started to realize the forced power generation of the range extender to supplement electric energy for the battery of the target vehicle. When the real-time SOC of the target vehicle rises to the target exit state of charge, the forced start process of the range extender is exited, that is, the second mode of the range extender is exited. At this time, since the real-time SOC is only greater than the target exit state of charge but may still be less than the second target state of charge, if at the same time the speed of the target vehicle is greater than the preset speed, the range extender is controlled to start and work in the first mode to meet the energy requirements during the vehicle driving process.

[0198] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0199] Based on the same inventive concept, an embodiment of the present application further provides a range extender control device for implementing the above-mentioned range extender control method. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the range extender control device provided below can refer to the limitations on the range extender control method in the above text, and will not be repeated here.

[0200] In one embodiment, as Figure 7 shown, a range extender control device is provided, including: a data acquisition module 701, a starting state of charge adjustment module 702, and a range extender control module 703, where:

[0201] The data acquisition module 701 is configured to acquire the cumulative number of charging times and the number of days of range extender operation of the target vehicle within the current mileage cycle, and the first starting state of charge of the range extender associated with the target vehicle;

[0202] The starting state of charge adjustment module 702 is configured to, when the cumulative number of charging times is less than or equal to the first preset number, based on the number of days interval in which the number of days of range extender operation is located, adopt a charge state adjustment method corresponding to the number of days interval to adjust the first starting state of charge to obtain the second starting state of charge of the range extender. The charge state adjustment methods include remaining unchanged and adjusting upward;

[0203] The range extender control module 703 is configured to, in the next mileage cycle, if the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start.

[0204] In some embodiments, the range extender control module 703 is further configured to, when the speed of the target vehicle is greater than the first preset speed and the state of charge of the target vehicle is less than the second starting state of charge, control the range extender of the target vehicle to start in the first mode.

[0205] In some embodiments, the starting state of charge adjustment module 702 is further configured to determine a third starting state of charge associated with the second starting state of charge, and the third starting state of charge is less than the second starting state of charge.

[0206] The range extender control module 703 is further configured to, in the next mileage cycle, when the state of charge of the target vehicle is less than the third starting state of charge, control the range extender of the target vehicle to start in the second mode.

[0207] In some embodiments, the starting state of charge adjustment module 702 is further configured to determine a target exit state of charge associated with the third starting state of charge, and the target exit state of charge is less than the second starting state of charge and greater than the third starting state of charge.

[0208] The range extender control module 703 is further configured to, in the next mileage cycle, after controlling the range extender of the target vehicle to start in the second mode, when the state of charge of the target vehicle is greater than the target exit state of charge, control the range extender of the target vehicle to exit the second mode.

[0209] In some embodiments, the starting state of charge adjustment module 702 obtains the third starting state of charge associated with the second starting state of charge by looking up the mapping relationship between the second starting state of charge and the third starting state of charge.

[0210] In some embodiments, the starting state of charge adjustment module 702 reduces the absolute value of the first preset value corresponding to the state of charge interval of the second starting state of charge based on the state of charge interval where the second starting state of charge is located, to obtain the third starting state of charge associated with the second starting state of charge, where the larger the value of the state of charge interval, the larger the absolute value of the first preset value corresponding to the state of charge interval.

[0211] In some embodiments, there are multiple days intervals, and each days interval corresponds to an upward adjustment ratio respectively, where the larger the value of the days interval, the larger the upward adjustment ratio corresponding to the days interval;

[0212] The starting state of charge adjustment module 702 is configured to increase the first starting state of charge by the upward adjustment ratio corresponding to the days interval to obtain the second starting state of charge of the range extender.

[0213] In some embodiments, the days intervals include a first days interval, a second days interval, a third days interval, and a fourth days interval:

[0214] The upper limit value of the first days interval is less than the first day value, and the upward adjustment ratio corresponding to the first days interval is 0;

[0215] The second days interval is greater than or equal to the first day value and less than the second day value, and the upward adjustment ratio corresponding to the second days interval is the first upward adjustment ratio;

[0216] The third number interval is greater than or equal to the value of the second day and less than the value of the third day. The upward adjustment ratio corresponding to the third number interval is the second upward adjustment ratio, and the absolute value of the second upward adjustment ratio is greater than the absolute value of the first upward adjustment ratio;

[0217] The fourth number interval is greater than or equal to the value of the third day, and the upward adjustment ratio corresponding to the fourth number interval is the third upward adjustment ratio, and the absolute value of the third upward adjustment ratio is greater than the absolute value of the second upward adjustment ratio.

[0218] In some embodiments, the starting state of charge adjustment module 702 is further configured to:

[0219] When the cumulative number of charging times is greater than the first preset number and less than the second preset number, the first starting state of charge is used as the second starting state of charge;

[0220] When the cumulative number of charging times is greater than or equal to the second preset number, based on the number interval where the cumulative number of charging times is located, the first starting state of charge is down-regulated by using the down-regulation parameter corresponding to the number interval to obtain the second starting state of charge of the range extender.

[0221] In some embodiments, there are multiple number intervals, and each number interval corresponds to a down-regulation ratio respectively. Among them, the larger the value of the number interval, the larger the down-regulation ratio corresponding to the number interval;

[0222] The starting state of charge adjustment module 702 is further configured to down-regulate the first starting state of charge by the down-regulation ratio corresponding to the number interval to obtain the second starting state of charge of the range extender.

[0223] In some embodiments, the number intervals include a first number interval and a second number interval:

[0224] The first number interval is greater than or equal to the second preset number and less than or equal to the third preset number, and the upward adjustment ratio corresponding to the first number interval is the first down-regulation ratio;

[0225] The second number interval is greater than the third preset number, and the down-regulation ratio corresponding to the second number interval is the second down-regulation ratio, and the absolute value of the second down-regulation ratio is greater than the absolute value of the first down-regulation ratio.

[0226] In some embodiments, when the state of charge value obtained by adjusting the first starting state of charge by using the state of charge adjustment method corresponding to the number interval is greater than the upper limit state of charge threshold, the starting state of charge adjustment module 702 is further configured to determine the upper limit state of charge threshold as the second starting state of charge.

[0227] In some embodiments, the starting state of charge adjustment module 702 is further configured to determine the lower limit state of charge threshold as the second starting state of charge when the state of charge value obtained by reducing the first starting state of charge using the down - adjustment parameter corresponding to the usage number range is less than the lower limit state of charge threshold.

[0228] Each module in the above - mentioned range extender control device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in the processor of the computer device in hardware form or be independent of it, or be stored in the memory of the computer device in software form so that the processor can call and execute the operations corresponding to each of the above modules.

[0229] In one embodiment, a range extender controller is provided, which includes a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps of the range extender control method in any of the above - mentioned embodiments are implemented.

[0230] In some embodiments, a computer - readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the range extender control method in any of the above - mentioned embodiments are implemented.

[0231] In one embodiment, a computer program product is provided, which includes a computer program. When the computer program is executed by a processor, the steps of the range extender control method in any of the above - mentioned embodiments are implemented.

[0232] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memories can include read-only memory (ROM), magnetic tapes, floppy disks, flash memories, optical memories, high-density embedded non-volatile memories, resistive random access memories (ReRAM), magnetoresistive random access memories (MRAM), ferroelectric random access memories (FRAM), phase change memories (PCM), graphene memories, etc. Volatile memories can include random access memory (RAM) or external cache memories, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0233] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0234] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A range extender control method, characterized in that, The method includes: Obtaining the cumulative charging times and the running days of the range extender within the current mileage cycle of the target vehicle, as well as the first starting state of charge of the range extender associated with the target vehicle; When the cumulative charging times are less than or equal to the first preset number of times, based on the day range in which the running days of the range extender are located, using the charge state adjustment method corresponding to the day range to adjust the first starting state of charge to obtain the second starting state of charge of the range extender, where the charge state adjustment method includes remaining unchanged and increasing; In the next mileage cycle, if the state of charge of the target vehicle is less than the second starting state of charge, controlling the range extender of the target vehicle to start.

2. The method according to claim 1, characterized in that, If the state of charge of the target vehicle is less than the second starting state of charge, controlling the range extender of the target vehicle to start, including: When the speed of the target vehicle is greater than the first preset speed and the state of charge of the target vehicle is less than the second starting state of charge, controlling the range extender of the target vehicle to start in the first mode.

3. The method according to claim 2, characterized in that, The method further includes: Determining a third starting state of charge associated with the second starting state of charge, where the third starting state of charge is less than the second starting state of charge; In the next mileage cycle, when the state of charge of the target vehicle is less than the third starting state of charge, controlling the range extender of the target vehicle to start in the second mode.

4. The method according to claim 3, wherein The method further includes: Determining a target exit state of charge associated with the third starting state of charge, where the target exit state of charge is less than the second starting state of charge and greater than the third starting state of charge; In the next mileage cycle, after controlling the range extender of the target vehicle to start in the second mode, when the state of charge of the target vehicle is greater than the target exit state of charge, controlling the range extender of the target vehicle to exit the second mode.

5. The method according to claim 3, characterized in that, The method further includes: Obtaining the third starting state of charge associated with the second starting state of charge by looking up the mapping relationship between the second starting state of charge and the third starting state of charge; Or Based on the charge state range in which the second starting state of charge is located, reducing the second starting state of charge by the absolute value of the first preset value corresponding to the charge state range to obtain the third starting state of charge associated with the second starting state of charge, where the greater the value of the charge state range, the greater the absolute value of the first preset value corresponding to the charge state range.

6. The method according to any one of claims 1 to 5, characterized in that, There are multiple such day ranges, and each day range corresponds to an increase ratio respectively, where the greater the value of the day range, the greater the increase ratio corresponding to the day range; Using the charge state adjustment method corresponding to the day range to adjust the first starting state of charge to obtain the second starting state of charge of the range extender, including: Increasing the first starting state of charge by the increase ratio corresponding to the day range to obtain the second starting state of charge of the range extender.

7. The method according to any one of claims 1 to 5, characterized in that, The method further includes: When the cumulative number of charging times is greater than the first preset number and less than the second preset number, the first starting state of charge is used as the second starting state of charge; When the cumulative number of charging times is greater than or equal to the second preset number, based on the number range in which the cumulative number of charging times is located, the first starting state of charge is down-regulated by using the down-regulation parameter corresponding to the number range to obtain the second starting state of charge of the range extender.

8. The method according to claim 7, characterized in that, There are multiple such number ranges, and each number range corresponds to a down-regulation ratio respectively, where the larger the value of the number range, the larger the down-regulation ratio corresponding to the number range; Using the down-regulation parameter corresponding to the number range to down-regulate the first starting state of charge to obtain the second starting state of charge of the range extender includes: Down-regulating the first starting state of charge by the down-regulation ratio corresponding to the number range to obtain the second starting state of charge of the range extender.

9. An extender control device, characterized in that The device includes: A data acquisition module, configured to acquire the cumulative number of charging times and the number of days of operation of the range extender during the current mileage period of the target vehicle, and the first starting state of charge of the range extender associated with the target vehicle; A starting state of charge adjustment module, configured to, when the cumulative number of charging times is less than or equal to the first preset number, based on the number range of the number of days of operation of the range extender, use the charge state adjustment method corresponding to the number range to adjust the first starting state of charge to obtain the second starting state of charge of the range extender, and the charge state adjustment method includes remaining unchanged and upward adjustment; A range extender control module, configured to control the range extender of the target vehicle to start in the next mileage period if the state of charge of the target vehicle is less than the second starting state of charge.

10. An extender controller includes a memory and a processor, the memory stores a computer program, and is characterized in that When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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