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 number of times of fast charging and the number of times of slow charging of a target vehicle in the current time period and the starting charge state of a range extender associated with the target vehicle are obtained; under the condition that the fast charging number of times is smaller than a first fast charging number of times threshold value, based on a slow charging number of times interval where the slow charging number of times is located, a first charging state adjusting mode corresponding to the slow charging number of times interval is adopted, the starting charging state is updated, and the updated starting charging state is obtained; the first state-of-charge adjustment mode comprises constant maintenance and downward adjustment. 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 in particular 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

[0002] With the development of electric vehicle technology, in order to meet the demand of extending the cruising range of electric vehicles, a range extender appears, which provides energy for electric vehicles through an internal combustion engine, including supplementing the battery to extend the cruising range. The electric vehicle provided with the range extender is also called a range extended electric vehicle. In the case of insufficient battery power, the range extended electric vehicle supplements electric power by using other energy (such as gasoline) through the range extender. The working mode of the range extended electric vehicle can include a pure electric mode and a range extending mode. When the battery power is sufficient, the range extended electric vehicle can prefer to be in the pure electric mode and rely on electric power driving. When the state of charge (SOC) of the battery decreases to a certain threshold (which is also called the starting state of charge or starting SOC of the range extender), the range extended electric vehicle is in the range extending mode, and the internal combustion engine starts to operate as a generator to generate electric power which is preferentially supplied to the electric motor to drive the vehicle.

[0003] In related technologies, when setting the starting state of charge of the range extender, a corresponding starting state of charge is usually set for each operating mode of the vehicle. However, the pre-set starting state of charge cannot completely adapt to the actual situation of the vehicle, such as the charging situation of the vehicle, and there is a need to improve the control mode of the range extender. SUMMARY

[0004] Therefore, 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 capable of improving the control accuracy of the range extender to solve the above technical problems.

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

[0006] obtaining the number of fast charging times and the number of slow charging times of the target vehicle in a current time period, and the starting state of charge of the range extender associated with the target vehicle;

[0007] In the case where the number of fast charging times is less than a first fast charging time threshold, based on the slow charging time interval in which the number of slow charging times is located, a first state of charge adjustment mode corresponding to the slow charging time interval is used to update the starting state of charge to obtain an updated starting state of charge, and the first state of charge adjustment mode includes maintaining unchanged and adjusting downward.

[0008] In some embodiments, the method further comprises:

[0009] receiving a charging pile connection signal, determining a charging type based on the charging pile connection signal, the charging type including fast charging and slow charging;

[0010] in a case where the determined charging type is slow charging, recording a charging pile connection time;

[0011] in a case where a charging pile disconnection signal is received, recording a charging pile disconnection time;

[0012] determining whether to increase a slow charging charging number based on a charging duration, and a time period interval in which the charging pile connection time and the charging pile disconnection time are located.

[0013] In some embodiments, determining whether to increase the slow charging charging number based on the charging duration, and the time period interval in which the charging pile connection time and the charging pile disconnection time are located, includes:

[0014] in a case where the time period interval in which the charging pile connection time and the charging pile disconnection time are located is within a preset time period interval, and the charging duration is greater than or equal to a preset slow charging duration corresponding to the preset time period interval, increasing the slow charging charging number by 1;

[0015] wherein an interval interval duration of the preset time period interval is greater than the preset slow charging duration.

[0016] In some embodiments, the preset time period interval is determined based on a low electricity price time range.

[0017] In some embodiments, the preset time period interval includes a plurality of preset time period intervals, and the preset slow charging duration corresponding to each preset time period interval is the same or different.

[0018] In some embodiments, the preset time period interval includes a first preset time period interval and a second preset time period interval, and the second preset time period interval is a subset of the first preset time period interval.

[0019] in a case where the time period interval in which the charging pile connection time and the charging pile disconnection time are located is within the first preset time period interval, and the charging duration is greater than or equal to a first preset slow charging duration, increasing the slow charging charging number by 1;

[0020] in a case where the time period interval in which the charging pile connection time and the charging pile disconnection time are located is within the second preset time period interval, and the charging duration is greater than or equal to a second preset slow charging duration, increasing the slow charging charging number by 1;

[0021] wherein a first interval interval duration of the first preset time period interval is greater than the first preset slow charging duration, and a second interval interval duration of the second preset time period interval is greater than the second preset slow charging duration.

[0022] In some embodiments, in a case where the determined charging type is slow charging, the charging pile connection time is recorded, including:

[0023] In a case where the determined charging type is slow charging, in a case where the charging duration is greater than or equal to a first preset duration, the charging pile connection time is recorded.

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

[0025] In a case where the determined charging type is fast charging, if the charging duration is greater than or equal to a second preset duration, the number of fast charging times is incremented by 1.

[0026] In some embodiments, the slow charging time interval includes at least two, and each slow charging time interval corresponds to a down-regulation ratio, wherein the greater the endpoint value of the slow charging time interval, the greater the down-regulation ratio corresponding to the slow charging time interval.

[0027] Based on the slow charging time interval in which the slow charging number of times is located, a first state of charge adjustment mode corresponding to the slow charging time interval is used to update the starting state of charge to obtain an updated starting state of charge, including:

[0028] The starting state of charge is down-regulated by the down-regulation ratio corresponding to the slow charging time interval to obtain the updated starting state of charge.

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

[0030] In a case where the fast charging number of times is greater than or equal to a first fast charging time threshold, based on the fast charging time interval in which the fast charging number of times is located, a second state of charge adjustment mode corresponding to the fast charging time interval is used to update the starting state of charge to obtain an updated starting state of charge, and the second state of charge adjustment mode includes maintaining unchanged and upward adjustment.

[0031] In some embodiments:

[0032] The fast charging time interval includes at least two, and each fast charging time interval corresponds to an up-regulation ratio or a state of charge target value, wherein the greater the endpoint value of the fast charging time interval, the greater the up-regulation ratio or the state of charge target value corresponding to the fast charging time interval.

[0033] Based on the fast charging time interval in which the fast charging number of times is located, a second state of charge adjustment mode corresponding to the fast charging time interval is used to update the starting state of charge to obtain an updated starting state of charge, including:

[0034] The starting state of charge is up-regulated by the up-regulation ratio corresponding to the fast charging time interval to obtain the updated starting state of charge.

[0035] Or

[0036] The state of charge target value corresponding to the fast charging number interval is taken as the updated start state of charge.

[0037] In some embodiments, the method further includes:

[0038] In a case where the fast charging number is greater than or equal to a first fast charging number threshold and the slow charging number is greater than or equal to a target slow charging number threshold, the start state of charge is maintained unchanged.

[0039] In some embodiments, the method further includes:

[0040] In a case where the fast charging number is greater than or equal to a target fast charging number threshold, the start state of charge is set to a preset state of charge.

[0041] In a second aspect, the present application further provides a range extender control device. The device includes:

[0042] A data acquisition module is configured to acquire a fast charging number and a slow charging number of a target vehicle in a current time period, and a start state of charge of a range extender associated with the target vehicle.

[0043] An adjustment module is configured to, in a case where the fast charging number is less than a first fast charging number threshold, update the start state of charge based on a slow charging number interval in which the slow charging number is located, to obtain an updated start state of charge, by using a first state of charge adjustment mode corresponding to the slow charging number interval, the first state of charge adjustment mode including maintaining unchanged and adjusting downward.

[0044] 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 the processor implements the steps of the range extender control method in any of the above embodiments when executing the computer program.

[0045] In a fourth aspect, the present application further provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the range extender control method in any of the above embodiments.

[0046] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and the computer program is executed by a processor to implement the steps of the range extender control method in any of the above embodiments.

[0047] The aforementioned range extender control method, range extender control device, range extender controller, computer-readable storage medium, and computer program product, by statistically analyzing the number of fast charging and slow charging cycles of the target vehicle within the current time period, determine the corresponding state of charge adjustment method based on the slow charging cycle range when the number of fast charging cycles is less than a first fast charging cycle threshold. This updates the starting state of charge to obtain the updated starting state of charge. The adjustment method is either to maintain the status quo or to adjust downwards. Since the number of fast charging cycles is less than the first fast charging cycle threshold, it indicates that during the current time period, the target vehicle was primarily charged using slow charging, meaning that fast charging was not used to replenish the battery, or even if fast charging was used, it was only done a very small number of times. Slow charging is sufficient to meet the battery replenishment needs of the target vehicle. Because the current is lower during slow charging, the internal chemical reaction of the battery is relatively mild and stable. During the process, the structural changes of the electrode material are relatively small, reducing the polarization phenomenon inside the battery and effectively slowing down the rate of battery capacity decay. When slow charging is used more often, it indicates that the target vehicle's battery is in normal condition or the battery aging rate is relatively slow. Therefore, the starting state of charge can be adjusted by maintaining it or adjusting it downward. The adjusted starting state of charge can be used as the starting state of charge for the next time period. When determining the starting state of charge for the next time period, it is adjusted in combination with the number of fast charging and slow charging cycles of the current vehicle. Both the number of fast charging and slow charging cycles are related to the vehicle's charging and replenishment methods. The charging and replenishment methods and cycles of the vehicle are related to both the vehicle's usage habits and the charging habits of the vehicle's users. Thus, the starting state of charge of the range extender is adjusted based on the actual driving process of the vehicle and the user's charging habits. The adjusted starting state of charge is used to control the start of the range extender, improving the control accuracy of the vehicle's range extender. Attached Figure Description

[0048] Figure 1 This is a flowchart illustrating a range extender control method in one embodiment;

[0049] Figure 2 A flowchart illustrating another embodiment of the range extender control method;

[0050] Figure 3 This is a flowchart illustrating another embodiment of the range extender control method;

[0051] Figure 4 This is a flowchart illustrating a range extender control method according to another embodiment;

[0052] Figure 5 Flowchart of the method for controlling the range extender according to another embodiment;

[0053] Figure 6 Flowchart of the method for controlling the range extender according to one embodiment;

[0054] Figure 7 Flowchart of the method for controlling the range extender according to another embodiment;

[0055] Figure 8 Block diagram of the device for controlling the range extender according to one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0057] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having," and any variations thereof, as used herein are intended to cover a non-exclusive inclusion.

[0059] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0060] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0061] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0062] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0063] It should be noted that the information (including but not limited to fast charging times, slow charging times, charging pile connection time, charging pile disconnection time, charging time, and starting state of charge) 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 related data comply with the relevant provisions of relevant laws and regulations. In the embodiments of the present application, some existing industry solutions may be mentioned, which should be considered as exemplary, and the purpose is only to illustrate the feasibility of the implementation of the technical solutions of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0064] The electric vehicle provided with the range extender is converted into electric energy by the range extender to drive the vehicle directly or charge the battery, so when the range extender starts will affect the driving experience of the electric vehicle, and the setting of the starting state of charge (SOC) of the range extender as a parameter indicating when the range extender starts will directly affect the driving experience of the electric vehicle. In the related art, the starting SOC of the range extender of the vehicle is set based on experience or test results. However, in the actual use of the vehicle, for the same type of vehicle, even if the same starting SOC is set, the driving experience based on the starting of the range extender is different.

[0065] It is found through research that different vehicles have different actual driving processes, and different driving users have different charging habits, which will all affect the starting SOC of the vehicle battery. It is found through research that different driving processes and charging habits can be reflected in whether fast charging or slow charging is used for the vehicle, so that the number of fast charging times and the number of slow charging times of the vehicle battery within a period of time are different, and thus the starting SOC of the range extender of the vehicle can be adjusted in combination with the number of fast charging times and the number of slow charging times of the vehicle battery within a period of time, to improve the accuracy of the control of the range extender, and accordingly improve the driving experience.

[0066] Accordingly, the embodiment of the present application provides a range extender control method, which can be applied to an electric vehicle provided with a range extender. The range extender control method can be executed by a controller of the electric vehicle, which can be a range extender controller, a vehicle control unit (VCU) of the electric vehicle, a combination of the VCU and the range extender controller, or other controllers in the electric vehicle.

[0067] In one embodiment, as shown in Figure 1 A range extender control method is provided, comprising the following steps:

[0068] Step S102: Obtain the number of fast charging times and the number of slow charging times of the target vehicle in a current time period, and the start state of charge of the range extender associated with the target vehicle.

[0069] The target vehicle refers to an electric vehicle provided with a range extender, and the specific vehicle type of the electric vehicle is not limited.

[0070] The time period refers to a time interval divided according to time, and the length of the time period is not limited, for example, 15 days, 20 days, 30 days, or one month. In some examples, each time period can have a corresponding start time point and an end time point, and in other examples, a timer can be set, the timing duration of the timer is the duration of the time period, and when the timing duration of the timer ends, the current time period ends and the timing of the time period is initialized, thereby entering the next time period.

[0071] In order to improve the accuracy of the time period record, avoid the inaccuracy of the time period timing caused by the failure of the timer, and the loss of the electric energy of the battery of the target vehicle caused by the timer timing, in the related embodiments of the present application, each time period can have a corresponding start time point and an end time point, for example, 30 days for a time period.

[0072] The current time period refers to the time period in which the current time point is located, that is, the time period in which the current time point is located when the embodiment of the present application is executed. In the related specific examples of the present application, the execution of the range extender control method of the embodiment of the present application can be triggered when the end time point of a certain time period is reached.

[0073] The starting state of charge associated with the range extender of the target vehicle is a threshold value of the state of charge used to determine whether to start the range extender in the current time period, that is, the starting SOC of the current time period, which can be used to determine whether to start the range extender in the current time period, or can be an initial threshold value of the starting state of charge used to determine whether to start the range extender in the current time period. In related examples, when the state of charge of the battery of the target vehicle is less than the starting state of charge in the current time period, the range extender of the target vehicle can be controlled to start.

[0074] The number of fast charging times in the current time period refers to the number of times of charging the battery of the target vehicle by fast charging in the current time period, and the number of slow charging times in the current time period refers to the number of times of charging the battery of the target vehicle by slow charging in the current time period.

[0075] Fast charging, also known as fast charging, is to access a high-voltage and high-current direct current power supply, skip the on-board charger, and directly input direct current to the battery, so as to supplement a large amount of power to the battery in a short time. Fast charging has high charging power and can quickly supplement power.

[0076] Slow charging, also known as slow charging, is to convert alternating current into direct current through an on-board charger, and then slowly charge the battery. Slow charging has low charging power and long charging time.

[0077] In the current time period, the number of fast charging times is accumulated when charging the target vehicle by fast charging, and the number of slow charging times is accumulated when charging the target vehicle by slow charging.

[0078] Step S104: If the number of fast charging times is less than the first fast charging time threshold, the starting state of charge is updated based on the slow charging time interval in which the number of slow charging times is located, using the first state of charge adjustment mode corresponding to the slow charging time interval, to obtain an updated starting state of charge. The first state of charge adjustment mode includes maintaining the same and adjusting downward.

[0079] The slow charging time interval refers to an interval divided according to the number of slow charging times. Each slow charging time interval can be provided with a corresponding first state of charge adjustment mode. The first state of charge adjustment mode refers to a mode of adjusting the starting state of charge in the current time period based on the slow charging time interval. Different slow charging time intervals can correspond to different first state of charge adjustment modes.

[0080] The different first state-of-charge adjustment manners can refer to different adjustment directions, for example, maintaining unchanged and adjusting downward. In some examples, the different first state-of-charge adjustment manners can also include different adjustment amplitudes, for example, the first state-of-charge adjustment manners corresponding to the two slow charging time intervals are both downward adjustment, but the adjustment amplitudes or specific adjustment values of the two first state-of-charge adjustment manners are different, and the like, but are not limited thereto.

[0081] The maintaining unchanged refers to keeping the starting state-of-charge unchanged, that is, not adjusting the starting state-of-charge of the current time period, and directly taking the starting state-of-charge of the current time period as the starting state-of-charge of the next time period.

[0082] The downward adjustment refers to reducing the starting state-of-charge of the current time period. Taking the starting state-of-charge of the current time period as 30% for example, the starting state-of-charge obtained after the downward adjustment is less than 30%, such as 25% or 20%, and the like.

[0083] The actual slow charging times can be in different slow charging time intervals, and then the first state-of-charge adjustment manner corresponding to the slow charging time interval can be used to adjust the starting state-of-charge to obtain an updated starting state-of-charge.

[0084] In actual application, the updated starting state-of-charge can be taken as the starting state-of-charge of the range extender in the next time period. In the next time period, if the state-of-charge of the target vehicle is less than the updated starting state-of-charge, the range extender of the target vehicle is controlled to start.

[0085] When the time enters the next time period, the state-of-charge of the battery of the target vehicle can be obtained in real time, and the state-of-charge is compared with the above-mentioned updated starting state-of-charge of the target vehicle. When the real-time state-of-charge is less than the updated second starting state-of-charge, the range extender of the target vehicle is controlled to start.

[0086] The manner of controlling the range extender of the target vehicle to start is not limited, for example, the range extender controller generates a corresponding control instruction / control signal, and controls the range extender of the target vehicle to be in a starting state through the control instruction / control signal, and again for example, the domain controller or the vehicle control unit VCU of the target vehicle generates a control instruction / control signal, and sends the control instruction / control signal to the range extender controller to control the range extender of the target vehicle to be in a starting state. In other embodiments, the range extender of the target vehicle can also be controlled to start through other manners, and the embodiments of the present application do not specifically show this.

[0087] The above range extender control method, by counting the fast charging times and the slow charging times of the target vehicle in the current time period, in the case that the fast charging times is less than the first fast charging times threshold, the corresponding state of charge adjustment mode is determined by the slow charging times interval in which the slow charging times is located, the starting state of charge is updated to obtain the updated starting state of charge, and the adjustment mode is unchanged and downward adjustment. Since in the case that the fast charging times is less than the first fast charging times threshold, it means that in the current time period, when charging the target vehicle, it is mostly charged in the slow charging mode, that is, the battery is not supplemented with power through fast charging, or even if the battery is supplemented with power through fast charging, it is only a few times. The slow charging mode can meet the demand of supplementing power for the battery of the target vehicle. Since the current is small during slow charging, the chemical reaction inside the battery is relatively mild and stable, the structure change of the electrode material is relatively small during the slow charging process of the battery, the polarization phenomenon inside the battery is reduced, and the decay rate of the battery capacity can be effectively slowed down. In the case of charging in the slow charging mode, it means that the battery state of the target vehicle is normal or the battery aging speed is relatively slow, so the starting state of charge can be adjusted by maintaining or downward adjustment. The adjusted starting state of charge can be used as the starting state of charge of the next time period. When determining the starting state of charge of the next time period, the fast charging times and the slow charging times of the current vehicle are adjusted. The fast charging times and the slow charging times are related to the charging method of the vehicle. The charging method and the number of times of the vehicle are related to the use habit of the vehicle and the charging habit of the user. Therefore, the starting state of charge of the range extender is adjusted based on the actual driving process of the vehicle and the charging habit of the user, and the starting of the range extender is controlled by the adjusted starting state of charge, which improves the control accuracy of the range extender of the vehicle.

[0088] The way of recording and determining the fast charging times and the full charging times is not limited. In some embodiments, referring to Figure 2 The method further includes:

[0089] Step S202: receiving a charging pile connection signal, determining a charging type based on the charging pile connection signal, the charging type including fast charging and slow charging.

[0090] The charging pile connection signal is a signal generated or received when the vehicle and the charging pile establish a communication connection. The charging pile is a special device for providing power supply for electric vehicles (including pure electric vehicles, plug-in hybrid vehicles, etc.), and its function is similar to that of a gas station for traditional fuel vehicles. The manner of determining the charging type based on the charging pile connection signal is not limited. In some examples, the protocol in the charging pile connection signal can contain information indicating the charging type. The charging type can be determined by extracting the protocol information in the charging pile connection signal. In other examples, after receiving the charging pile connection signal, the charging type information that the charging is fast charging or slow charging can be obtained based on the charging strategy determined in real time for charging the target vehicle, wherein the charging strategy usually includes fast charging and slow charging. In other examples, some vehicles establish a connection with the charging pile through different interfaces when performing fast charging and slow charging, so that the charging type can be determined according to the type of the interface through which the target vehicle connects with the charging pile. It can be understood that in other embodiments, the charging type, i.e., whether it is fast charging or slow charging, can also be determined by other manners, which are not limited in the embodiments of the present application.

[0091] Step S204: In the case where the determined charging type is slow charging, record the charging pile connection time.

[0092] In the case where the determined charging type is slow charging, record the charging pile connection time. The recorded charging pile connection time can be the time when the charging pile connection signal is received, or the time when the charging type is determined to be slow charging. Since the determination of the charging type is completed in a relatively short time, usually within a few seconds or even within 1 second, in the case where the charging type is indicated in the protocol of the charging pile connection signal, the charging type can be determined as soon as the charging pile connection signal is received, which is much smaller than the charging time of slow charging with relatively long time. Therefore, the time when the charging pile connection signal is received and the time when the charging type is determined to be slow charging can both be used as the recorded charging pile connection time, but are not limited thereto.

[0093] In some examples, the charging pile connection time can be directly recorded in the case where the determined charging type is slow charging. In other examples, the charging pile connection time can be recorded in the case where the determined charging type is slow charging and the charging time is greater than or equal to the first preset time. That is, the first preset time is not recorded when the charging time does not reach the first preset time. Only when the charging time is greater than or equal to the first preset time, the charging pile connection time is recorded, so as to reduce the consumption of resources caused by recording the charging pile connection time when the short-time full charging is ended.

[0094] In some examples, the charging pile connection time can be obtained by subtracting the first preset time length from the time when the first preset time length is reached, or the time when the charging duration starts can be taken as the charging pile connection time, but the present application is not limited thereto.

[0095] The specific value of the first preset time length can be defined differently based on actual technical needs, for example, the first preset time length in some examples can include 15 minutes, but the present application is not limited thereto.

[0096] Step S206: In the case of receiving the charging pile disconnection signal, record the charging pile disconnection time.

[0097] The charging pile disconnection signal is a signal generated or received when the vehicle and the charging pile are disconnected. After the charging is completed, the vehicle and the charging pile need to be disconnected, for example, the vehicle generates a signal requesting disconnection, or the charging pile generates a signal requesting disconnection, in some examples, the charging pile disconnection signal can also be a trigger signal generated when the vehicle and the charging pile have been disconnected, for example, a signal generated when it is monitored that the vehicle and the charging pile have been disconnected. In other embodiments, the charging pile disconnection signal can also be other types of signals as long as it is related to the disconnection of the vehicle and the charging pile.

[0098] The recorded charging pile disconnection time can be the time of the received request disconnection signal, or the time when it is determined that the vehicle and the charging pile have been disconnected. Since the request disconnection signal is received or generated, and the disconnection of the vehicle and the charging pile is usually completed within a short time, which is much smaller than the charging duration of the slow charging with relatively long time, therefore, the time of the received request disconnection signal, or the time when it is determined that the vehicle and the charging pile have been disconnected, can be taken as the recorded charging pile disconnection time, but the present application is not limited thereto.

[0099] Step S208: Based on the charging duration, and the time period interval in which the charging pile connection time and the charging pile disconnection time are located, determine whether to increase the number of slow charging times.

[0100] The charging duration is the duration of a charging process. In some embodiments, the charging duration can be the duration obtained by subtracting the charging pile connection time from the charging pile disconnection time. In other examples, during the charging of the vehicle, the charging duration is usually counted and displayed, therefore, the charging duration can also be obtained directly by acquiring the count.

[0101] Based on the charging pile connection time and the charging pile disconnection time, the time interval of the charging process can be determined, the starting time point of the time interval is the charging pile connection time, and the ending time point of the time interval is the charging pile disconnection time.

[0102] Based on the charging duration, the duration of the charging process can be determined, that is, it can be determined whether the vehicle is connected to the charging pile or the charging gun is inserted, and then the charging gun is pulled out within a short time to complete the charging process, or the vehicle is connected to the charging pile or the charging gun is inserted, and then a certain duration of actual charging process is performed.

[0103] Based on the time interval of the charging process, it can be determined that the battery of the target vehicle is charged in which time interval, and different slow charging time intervals are usually related to the type of connected charging pile, for example, in the case of a user having a home charging pile, slow charging is usually performed for the vehicle at night, therefore, based on the charging duration and the time interval, the slow charging condition and the type of charging pile for charging can be analyzed, and thus it can be determined whether the slow charging times need to be counted.

[0104] In some embodiments, the determination of whether to increase the slow charging times based on the charging duration, the charging pile connection time and the charging pile disconnection time is not limited, and can include the following steps. Figure 3 As shown in FIG. 8, the determination of whether to increase the slow charging times based on the charging duration, the charging pile connection time and the charging pile disconnection time in step S208 can include the following steps.

[0105] In step S2081, when the time interval of the charging pile connection time and the charging pile disconnection time is in the preset time interval, and the charging duration is greater than or equal to the preset slow charging duration corresponding to the preset time interval, the slow charging times are increased by 1.

[0106] In some embodiments, the interval interval duration of the preset time interval is greater than the preset slow charging duration.

[0107] The preset time interval is used to determine the time interval in which the slow charging times can be recorded. In the related embodiments of the present application, the preset time interval can be determined based on the electricity price valley time range.

[0108] The electricity price valley refers to a period of time when the demand for electricity in the power system is low and the price of electricity is relatively cheap, at which time the price of electricity is greatly reduced to encourage users to shift their electricity demand and balance the load of the power grid. The duration of slow charging is usually long, so slow charging in the electricity price valley time range can meet the demand for slow charging and greatly reduce the cost of charging. In the case of a home charging pile, slow charging is usually performed during the electricity price valley period, so the preset time interval can be determined based on the electricity price valley time range.

[0109] In different regions or seasons, the time range of the electricity price valley can be different, so the preset time range interval can also be different in different regions and seasons.

[0110] The way of determining the preset time range interval based on the time range of the electricity price valley is not limited. In some embodiments, the time range of the electricity price valley can be used as the preset time range interval, or a part of the time range of the electricity price valley can be used as the preset time range interval. In other embodiments, the preset time range interval can be determined based on the time range of the electricity price valley after left and / or right floating, wherein the starting time point of the time range after left floating is earlier than the starting time point of the time range of the electricity price valley, and the ending time point of the time range after right floating is later than the ending time point of the time range of the electricity price valley, so as to meet the needs of the user who wants to charge at the time of the electricity price valley and also needs to meet the rest time. It can be understood that in other embodiments, other ways of determining the preset time range interval based on the time range of the electricity price valley can also be used, which are not limited.

[0111] The preset slow charging duration refers to the duration that needs to be reached when a slow charging process is determined to be executed based on the preset time range interval. The specific duration of the preset slow charging duration can be determined based on the interval interval duration of the preset time range interval, as long as the ratio of the preset slow charging duration to the interval interval duration is greater than or equal to the preset time ratio. The preset time range interval can include multiple intervals to adapt to and meet the slow charging situations of different types of users.

[0112] In some embodiments, when the preset time range interval includes multiple intervals, the preset slow charging durations corresponding to the preset time range intervals are the same or different.

[0113] Taking the case that the preset time range interval includes two intervals as an example, the preset time range interval can include a first preset time range interval and a second preset time range interval, and the preset slow charging duration can include a first preset slow charging duration and a second preset slow charging duration.

[0114] In the case that the time range interval in which the charging pile connection time and the charging pile disconnection time are located is in the first preset time range interval, and the charging duration is greater than or equal to the first preset slow charging duration, the slow charging charging times is added by 1.

[0115] In the case that the time range interval in which the charging pile connection time and the charging pile disconnection time are located is in the second preset time range interval, and the charging duration is greater than or equal to the second preset slow charging duration, the slow charging charging times is added by 1.

[0116] The first interval interval duration of the first preset time period interval is greater than the first preset slow charging duration, and the second interval interval duration of the second preset time period interval is greater than the second preset slow charging duration.

[0117] The interval interval duration of the preset time period interval is not limited in the degree of being greater than the preset slow charging duration. In some examples, the preset slow charging duration of each preset time period interval can be the same or different, and in other examples, the ratio of the preset slow charging duration of the preset time period interval to the interval interval duration of the preset time period interval is greater than or equal to the preset time ratio. In the case where the preset time period interval includes multiple, the preset time ratio of each preset time period interval can be the same or different.

[0118] In the case where the preset time period interval includes multiple, the relationship between each preset time period interval is not limited. In some examples, part or each preset time period interval is disjointed or mutually exclusive, that is, there is no intersection between each preset time period interval. In some examples, part of the preset time period intervals intersect, that is, there is an intersection between part of the preset time period intervals. In some examples, at least one preset time period interval is a subset of another preset time period interval, but is not limited to this.

[0119] For example, in some specific examples, the preset time period interval includes two, the first preset time period interval can be from 22:00 of the current day to 6:00 of the next day, and the first interval interval duration is 4 hours, and the first preset time ratio is 50%. The second preset time period interval can be from 00:00 of the current day to 4:00 of the next day, and the first interval interval duration is 2 hours, and the second preset time ratio is 50%. At this time:

[0120] If the charging pile connection time and the charging pile disconnection time are between 22:00 of the current day and 6:00 of the next day, that is, charging at night, and the charging duration (that is, the interval duration between the charging pile disconnection time and the charging pile connection time) is greater than 4 hours, the slow charging charging times is added by 1;

[0121] If the charging pile connection time and the charging pile disconnection time are between 00:00 of the current day and 4:00 of the next day, that is, charging at night, and the charging duration is greater than 2 hours, the slow charging charging times is added by 1.

[0122] In other embodiments, referring to Figure 4 The method further includes:

[0123] Step S210: In the case where the determined charging type is fast charging, if the charging duration is greater than or equal to the second preset duration, the fast charging charging times is added by 1.

[0124] The specific value of the second preset time length can be limited based on actual technical needs, which can be the same as or different from the first preset time length. For example, in some examples, the second preset time length can be set to be the same as the first preset time length, for example, 15 minutes, but is not limited thereto.

[0125] In some embodiments, the slow charging frequency interval can include at least two, and each slow charging frequency interval corresponds to a down-regulation ratio, wherein the greater the endpoint value of the slow charging frequency interval, the greater the down-regulation ratio corresponding to the slow charging frequency interval.

[0126] At this time, the slow charging frequency interval based on the slow charging frequency is updated by using the first state of charge adjustment mode corresponding to the slow charging frequency interval to update the starting state of charge, to obtain an updated starting state of charge, including:

[0127] The starting state of charge is down-regulated by the down-regulation ratio corresponding to the slow charging frequency interval, to obtain an updated starting state of charge.

[0128] Accordingly, by setting multiple different slow charging frequency intervals, each slow charging frequency interval corresponds to a different down-regulation ratio, so that the greater the slow charging frequency, the greater the down-regulation ratio for adjusting the starting state of charge. Since the more the slow charging frequency, the more the number of slow charging, and the more the charging frequency, the greater the impact on the battery durability, such as the service life, especially in the case of slow charging using a household charging pile, since the household charging pile is convenient for charging, users are more likely to use the household charging pile for frequent charging. Therefore, in the case of a large slow charging frequency, by setting a larger down-regulation ratio, the maintenance value of the starting state of charge can be reduced, the battery can be used to power the vehicle as much as possible, the pure electric range can be improved, the battery charging frequency can be reduced as much as possible, and the battery charging frequency can be reduced, which helps to maintain and improve the battery durability, such as the service life.

[0129] The specific slow charging frequency interval and the corresponding down-regulation ratio can be set in combination with actual technical needs. In some specific examples of the present application, three slow charging frequency intervals can be set, wherein the slow charging frequency interval includes a first slow charging frequency interval, a second slow charging frequency interval, and a third slow charging frequency interval, and wherein:

[0130] The upper limit value of the first slow charging frequency interval is less than or equal to the first slow charging frequency threshold, and the down-regulation ratio corresponding to the first slow charging frequency interval can be 0;

[0131] The second slow charging frequency interval is greater than the first slow charging frequency threshold and less than or equal to the second slow charging frequency threshold, and the down-regulation ratio corresponding to the second slow charging frequency interval is the first down-regulation ratio;

[0132] The third slow charging frequency interval is greater than the second slow charging frequency threshold, the third slow charging frequency interval corresponds to a second down-regulation ratio, and an absolute value of the second down-regulation ratio is greater than an absolute value of the first down-regulation ratio.

[0133] Specific numerical values of the first slow charging frequency threshold, the second slow charging frequency threshold, the first down-regulation ratio, and the second down-regulation ratio can be set in combination with specific technical needs. In specific examples of the present application, the first slow charging frequency threshold, the second slow charging frequency threshold, the first down-regulation ratio, and the second down-regulation ratio can be 4 times, 10 times, 5%, and 10%, respectively. It can be understood that other different settings can also be made in other embodiments.

[0134] Reference Figure 5 As shown in the related embodiments, the range extender control method further includes:

[0135] Step S106: In a case where the fast charging frequency is greater than a first fast charging frequency threshold, based on a fast charging frequency interval in which the fast charging frequency is located, a second state of charge adjustment mode corresponding to the fast charging frequency interval is used to update the starting state of charge to obtain an updated starting state of charge, and the second state of charge adjustment mode includes maintaining unchanged and upward adjustment.

[0136] The fast charging frequency interval refers to an interval divided for the fast charging frequency, and each fast charging frequency interval can be provided with a corresponding second state of charge adjustment mode. The second state of charge adjustment mode refers to a mode of adjusting the starting state of charge of the current time period, and different fast charging frequency intervals can correspond to different state of charge adjustment modes.

[0137] Different second state of charge adjustment modes can refer to different adjustment directions, such as maintaining unchanged and upward adjustment. In some examples, different second state of charge adjustment modes can also include different adjustment amplitudes, such as two fast charging frequency intervals corresponding to second state of charge adjustment modes that are both upward adjustment, but the upward adjustment amplitudes or specific adjustment values of the two second state of charge adjustment modes are different, but are not limited thereto.

[0138] Maintaining unchanged refers to keeping the starting state of charge unchanged, i.e., not adjusting the starting state of charge of the current time period, and directly taking the starting state of charge of the current time period as the starting state of charge of the next time period.

[0139] Upward adjustment refers to adjusting the starting state of charge of the current time period to be smaller. Taking the starting state of charge of the current time period as 30% as an example, the starting state of charge obtained after upward adjustment is greater than 30%, such as 35% or 40%, etc.

[0140] The actual fast charging frequency can be in different fast charging frequency intervals, and then the state of charge adjustment mode corresponding to the fast charging frequency interval can be used to adjust the starting state of charge to obtain an updated starting state of charge.

[0141] In some embodiments, the fast charging frequency intervals can include at least one, and each fast charging frequency interval corresponds to an upscaling ratio, wherein the greater the endpoint value of the fast charging frequency interval, the greater the upscaling ratio corresponding to the fast charging frequency interval.

[0142] At this time, the starting state of charge is updated based on the fast charging frequency interval using the second state of charge adjustment mode corresponding to the fast charging frequency interval to obtain an updated starting state of charge, including:

[0143] The starting state of charge is up-scaled by the upscaling ratio corresponding to the fast charging frequency interval to obtain an updated starting state of charge.

[0144] Accordingly, by setting multiple different fast charging frequency intervals, each fast charging frequency interval corresponds to a different upscaling ratio, so that the greater the fast charging frequency, the greater the upscaling ratio for adjusting the starting state of charge. Since the more fast charging frequencies, the more fast charging frequencies are used, and fast charging has a greater impact on the endurance of the battery power, the risk of the state of charge of the battery of the target vehicle decreasing rapidly is also higher, so the upscaling ratio can be set larger to minimize the possibility of the battery rapidly running out of power and failing to provide power to the vehicle in time, thereby meeting the energy demand of the vehicle as much as possible and helping to maintain the performance of the range extender.

[0145] The specific fast charging frequency interval and the corresponding upscaling ratio can be set in combination with actual technical needs, for example, by setting three fast charging frequency intervals, the fast charging frequency intervals include a first fast charging frequency interval, a second fast charging frequency interval, and a third fast charging frequency interval, and at this time:

[0146] The upper limit value of the first fast charging frequency interval is less than the first fast charging frequency threshold, and the upscaling ratio corresponding to the first fast charging frequency interval is a first upscaling ratio;

[0147] The second fast charging frequency interval is greater than or equal to the first fast charging frequency threshold and less than or equal to the second fast charging frequency threshold, the upscaling ratio corresponding to the second fast charging frequency interval is a second upscaling ratio, and the absolute value of the second upscaling ratio is greater than the absolute value of the first upscaling ratio;

[0148] The third fast charging frequency interval is greater than the second fast charging frequency threshold, the upscaling ratio corresponding to the third fast charging frequency interval is a third upscaling ratio, and the absolute value of the third upscaling ratio is greater than the absolute value of the second upscaling ratio.

[0149] The specific values of the first fast charging frequency threshold, the second fast charging frequency threshold, the first up-regulation ratio, the second up-regulation ratio, and the second down-regulation ratio can be set according to actual technical needs, and the present application does not make specific settings for them.

[0150] In some embodiments, the fast charging frequency intervals can include at least one, and each fast charging frequency interval corresponds to a state of charge target value. The greater the endpoint value of a fast charging frequency interval, the greater the state of charge target value corresponding to the fast charging frequency interval.

[0151] At this time, the starting state of charge is updated based on the fast charging frequency interval using the second state of charge adjustment mode corresponding to the fast charging frequency interval to obtain an updated starting state of charge, including:

[0152] The starting state of charge is updated using the state of charge target value corresponding to the fast charging frequency interval to obtain an updated starting state of charge.

[0153] Accordingly, by setting multiple different state of charge target values, each fast charging frequency interval corresponds to a different state of charge target value, so that the greater the fast charging frequency, the greater the updated state of charge target value. Since the fast charging frequency is greater, the number of times fast charging is used is greater, and fast charging has a greater impact on battery durability, such as life. Therefore, the risk of the state of charge of the target vehicle battery decreasing rapidly is also higher, so the state of charge target value can be set larger to minimize the possibility of the battery rapidly discharging and failing to provide power to the vehicle in time, thereby meeting the energy demand of the vehicle as much as possible and helping to maintain the performance of the range extender.

[0154] The specific fast charging frequency interval settings and corresponding state of charge target value settings can be set according to actual technical needs. Similarly, three fast charging frequency intervals are set. At this time, the fast charging frequency intervals include a first fast charging frequency interval, a second fast charging frequency interval, and a third fast charging frequency interval. At this time:

[0155] The upper limit value of the first fast charging frequency interval is less than the first fast charging frequency threshold, and the state of charge target value corresponding to the first fast charging frequency interval is a first state of charge target value;

[0156] The second fast charging frequency interval is greater than or equal to the first fast charging frequency threshold and less than or equal to the second fast charging frequency threshold, the state of charge target value corresponding to the second fast charging frequency interval is a second state of charge target value, and the absolute value of the second state of charge target value is greater than the absolute value of the first state of charge target value;

[0157] The third fast charging number interval is greater than the second fast charging number threshold, and the state of charge target value corresponding to the third fast charging number interval is a third state of charge target value, and the absolute value of the third state of charge target value is greater than the absolute value of the second state of charge target value.

[0158] The specific values of the first fast charging number threshold, the second fast charging number threshold, the first state of charge target value, the second state of charge target value, and the third state of charge target value can be set according to specific technical needs, for example, the first state of charge target value or the second state of charge target value in some examples is a default value of the starting state of charge set when the range extender is manufactured, such as 30%, but is not limited thereto, and the present embodiment does not make a specific setting for this.

[0159] In addition, in some embodiments, when the fast charging number interval includes more than two cases, some fast charging number intervals can correspond to an increase ratio, and some fast charging number intervals can correspond to a state of charge target value, wherein the greater the endpoint value of the fast charging number interval, the greater the increase ratio corresponding to the fast charging number interval, and the greater the state of charge target value corresponding to the fast charging number interval.

[0160] In some embodiments, the range extender control method further comprises:

[0161] In the case where the fast charging number is greater than or equal to the first fast charging number threshold and the slow charging number is greater than or equal to the target slow charging number threshold, the starting state of charge is maintained unchanged.

[0162] The target slow charging number threshold is a number threshold for determining the slow charging number of the target vehicle when charging is usually performed using a household charging pile, and the specific value of the target slow charging number threshold is not limited, which can be a pre-set threshold, or can be dynamically determined in combination with the fast charging number and the slow charging number of one or more time periods, and the present embodiment does not make a specific display for this.

[0163] Accordingly, in the case where the slow charging number is greater than or equal to the target slow charging number threshold, it is indicated that the target vehicle is usually charged using a household charging pile, and since the household charging pile is convenient for charging, the user is more likely to use the household charging pile for frequent charging. Therefore, in the case where the fast charging number is greater than or equal to the first fast charging number threshold, it is indicated that the fast charging number is more likely to be temporarily or suddenly used for fast charging of the target vehicle, and the fast charging is less likely to be the normal state of charging the target vehicle. Therefore, by maintaining the starting state of charge unchanged without increasing the starting state of charge, the battery can be used to supply power to the vehicle as much as possible, the pure electric range can be improved, the battery charging number can be reduced as much as possible, and the battery charging frequency can be reduced, which is helpful for maintaining and improving the durability, such as the service life, of the battery.

[0164] In some embodiments, in a case where the number of fast charging times is greater than or equal to the first number of fast charging times threshold and the number of slow charging times is less than the target number of slow charging times threshold, the starting state of charge can be maintained unchanged, or the starting state of charge can be updated based on the number of fast charging times in the number of fast charging times interval and using the second state of charge adjustment mode corresponding to the number of fast charging times interval, but not limited thereto.

[0165] In some embodiments, the range extender control method further includes:

[0166] In a case where the number of fast charging times is greater than or equal to the target number of fast charging times threshold, the starting state of charge is set to the preset state of charge.

[0167] The target number of fast charging times threshold is a number of times threshold for determining to adjust the starting state of charge of the target vehicle to the default preset state of charge. The specific value of the target number of fast charging times threshold is not limited and can be determined in combination with the balance relationship of the performance of the range extender, the stability requirement of the battery performance, etc.

[0168] In a case where the number of fast charging times is greater than or equal to the target number of fast charging times threshold, it indicates that the number of times of using fast charging in the time period is relatively large. At this time, it indicates that even if there is a home charging pile, the target vehicle is not convenient to use the home charging pile for charging, for example, the target vehicle can be in long-distance driving or in an area far away from the home charging pile. Therefore, by setting the starting state of charge of the target vehicle to the default preset state of charge, the balance between maintaining the pure electric cruising range and quickly supplementing energy can be maintained to help maintain and improve the driving experience.

[0169] In the related embodiments of the present application, the range extender control method can further include:

[0170] In a case where the state of charge value obtained by adjusting the starting state of charge using the second state of charge adjustment mode corresponding to the number of fast charging times interval is greater than the upper limit state of charge threshold, the upper limit state of charge threshold is determined as the updated starting state of charge.

[0171] Based on this embodiment, by setting the upper limit state of charge threshold for the starting state of charge of the range extender, in a case where the state of charge value obtained by updating the starting state of charge based on the up-regulation parameter corresponding to the number of fast charging times interval is greater than the upper limit state of charge threshold, it indicates that the state of charge value obtained by adjusting accordingly is too large. The excessively large state of charge value is easy to cause the frequent start and stop of the range extender. Therefore, the upper limit state of charge threshold can be directly set as the updated starting state of charge to improve the control accuracy and stability of the range extender.

[0172] In the related embodiments of the present application, the range extender control method can further include:

[0173] In a case where the state of charge value obtained by lowering the starting state of charge using the lowering parameter corresponding to the slow charging frequency interval is less than the lower limit state of charge threshold value, the lower limit state of charge threshold value is determined as the updated starting state of charge.

[0174] Based on the embodiment, by setting the lower limit state of charge threshold value for the starting state of charge of the range extender, in a case where the state of charge value obtained by lowering the starting state of charge using the lowering parameter corresponding to the slow charging frequency interval is less than the lower limit state of charge threshold value, it is indicated that the state of charge value adjusted accordingly is too small, and the too small state of charge value is easy to cause the range extender to fail to start in time, causing the target vehicle to fail to supplement energy in time, and thus the lower limit state of charge threshold value can be directly set as the updated starting state of charge, so as to improve the control accuracy and stability of the range extender.

[0175] The specific values of the lower limit state of charge threshold value and the upper limit state of charge threshold value are not limited, and in the related embodiments of the present application, the lower limit state of charge threshold value and the upper limit state of charge threshold value can be respectively set to 20% and 70%, so that the starting state of charge of the range extender can be adjusted between 20%-70%.

[0176] Based on the embodiments as described above, the following is illustrated by combining specific examples, and in the following examples, a time period is taken as 30 days, a first slow charging frequency threshold value is taken as 4 times, a second slow charging frequency threshold value is taken as 10 times, a first lowering ratio is taken as 5%, a second lowering ratio is taken as 10%, a first fast charging frequency threshold value is taken as 1 time, a second fast charging frequency threshold value is taken as 2 times, a first fast charging frequency interval corresponding to a first raising ratio is taken as 0, a second fast charging frequency interval corresponding to a second raising ratio is taken as 5%, and a third fast charging frequency interval corresponding to a third raising ratio is taken as 15%, for example.

[0177] Referring to Figure 6 In the specific example, at an end time point of a 30-day time period, in step S601, the fast charging frequency Nq and the slow charging frequency Ns of the target vehicle in the current time period and the starting state of charge SOC1 of the range extender are obtained, and steps S602, S603, and S604 are entered, so that in steps S602, S603, and S604, the fast charging frequency Nq is compared with the corresponding first fast charging frequency threshold value 1, respectively.

[0178] In step S602, the fast charging frequency Nq is compared with the first fast charging frequency threshold value 1 to determine whether the fast charging frequency Nq is less than the first preset frequency 1, i.e., whether the fast charging frequency Nq is 0, and if so, steps S605, S606, and S607 are entered to further compare the slow charging frequency Ns with the corresponding slow charging frequency threshold value, respectively.

[0179] In step S603, the fast charging frequency Nq is compared with the first fast charging frequency threshold 1 and the second fast charging frequency threshold 2 to determine whether the fast charging frequency Nq is greater than or equal to the first fast charging frequency threshold 1 and less than or equal to the second fast charging frequency threshold 2, i.e., whether the fast charging frequency Nq is equal to 1 or 2, and if so, step S611 is entered.

[0180] In step S604, the fast charging frequency Nq is compared with the second fast charging frequency threshold 2 to determine whether the second fast charging frequency threshold 2 is greater than the second fast charging frequency threshold 2, and if so, step S612 is entered.

[0181] In step S605, the slow charging frequency Ns is compared with the first slow charging frequency threshold 4 to determine whether the slow charging frequency Ns is less than or equal to the first slow charging frequency threshold 4, and if so, step S608 is entered.

[0182] In step S606, the slow charging frequency Ns is compared with the first slow charging frequency threshold 4 and the second slow charging frequency threshold 10 to determine whether the slow charging frequency Ns is greater than the first slow charging frequency threshold 4 and less than or equal to the second slow charging frequency threshold 10, and if so, step S609 is entered.

[0183] In step S607, the slow charging frequency Ns is compared with the second slow charging frequency threshold 10 to determine whether the slow charging frequency Ns is greater than the second slow charging frequency threshold 10, and if so, step S610 is entered.

[0184] In step S608, in the case where the slow charging frequency Ns is less than or equal to the first slow charging frequency threshold 4, since at this time it is simultaneously satisfied that the fast charging frequency Nq is 0, it is indicated that in the current time period, the battery of the target vehicle has not been fast charged, and the number of slow charging is also limited, and thus it can be considered that the influence of charging on the performance of the battery is small, and thus the current starting state of charge SOC1 can be maintained unchanged as the updated starting state of charge SOC2.

[0185] In step S609, in the case where the slow charging frequency Ns is greater than the first slow charging frequency threshold 4 and less than or equal to the second slow charging frequency threshold 10, since at this time it is simultaneously satisfied that the fast charging frequency Nq is 0, it is indicated that in the current time period, the battery of the target vehicle has not been fast charged, and there is a certain number of slow charging, and thus it can be considered that the user basically uses the slow charging mode to charge the battery, and thus the current starting state of charge SOC1 can be reduced by 5% to obtain the updated starting state of charge SOC2, so as to maximize the power supply of the vehicle by the battery, improve the pure electric cruising range, minimize the battery charging frequency, and further reduce the battery charging frequency, which is helpful to maintain and improve the battery durability such as the service life.

[0186] In step S610, in the case that the number of slow charging times Ns is greater than the second slow charging time threshold 10, since the number of fast charging times Nq is 0 at this time, it indicates that no fast charging has been performed for the battery of the target vehicle in the current time period, and the number of slow charging times is relatively large, which indicates that the user is more likely to use only the household charging pile for slow charging, and thus the current starting state of charge SOC1 can be reduced by 10% to obtain the updated starting state of charge SOC2, further reducing the starting SOC to maximize the power supply from the battery to the vehicle, improving the pure electric range, minimizing the number of battery charging times, and thus reducing the battery charging frequency, which helps to maintain and improve the battery durability, such as the service life.

[0187] In step S611, in the case that the number of fast charging times Nq is 1 or 2, since the number of fast charging times of an electric vehicle is usually not more than 2 times in a month, the number of fast charging times is still within the acceptable range of fast charging times, but fast charging still has an impact on battery performance, and thus the starting state of charge value SOC1 can be adjusted by a small amount, i.e. adjusted by 5%, to obtain the updated starting state of charge SOC2.

[0188] In step S611, in the case that the number of fast charging times is greater than 2, since the number of fast charging times of an electric vehicle is usually not more than 2 times in a month, the number of fast charging times exceeds the recommended range of fast charging times, which can have a greater impact on battery performance, and thus the starting state of charge value SOC1 can be adjusted by a large amount, i.e. adjusted by 15%, to obtain the updated starting state of charge SOC2.

[0189] Based on Figure 6 As can be seen from the specific example shown in the figure, in this specific example:

[0190] In the case that the number of fast charging times is 0 and the number of slow charging times is less than or equal to 4, the starting state of charge SOC1 is maintained unchanged to obtain the updated starting state of charge SOC2;

[0191] In the case that the number of fast charging times is 0 and the number of slow charging times is greater than 4 and less than or equal to 10, the starting state of charge SOC1 is adjusted by 5% to obtain the updated starting state of charge SOC2;

[0192] In the case that the number of fast charging times is 0 and the number of slow charging times is greater than 10, the starting state of charge SOC1 is adjusted by 10% to obtain the updated starting state of charge SOC2;

[0193] In the case that the number of fast charging times is 1 or 2, the first starting state of charge SOC1 is adjusted by 5% to obtain the updated starting state of charge SOC2;

[0194] In the case of more than 2 times of fast charging, the first starting state of charge SOC1 is increased by 15% to obtain the updated starting state of charge SOC2.

[0195] After the starting state of charge is updated, the number of fast charging and the number of slow charging can be clearly recorded, so as to enter the recording process of the number of fast charging and the number of slow charging in the next time period.

[0196] Based on the above-mentioned embodiments, in another specific example, the time period is 30 days, the first slow charging threshold is 4 times, the second slow charging threshold is 10 times, the first down-regulation ratio is 5%, the second down-regulation ratio is 10%, and the target slow charging threshold is 4 times.

[0197] Reference Figure 7 In this specific example, at the end time point of a 30-day time period, in step S701, the number of fast charging Nq and the number of slow charging Ns of the target vehicle in the current time period, and the starting state of charge SOC1 of the range extender are obtained, and step S702 is entered, so as to compare the number of fast charging Nq with the first fast charging threshold 1 in step S702.

[0198] In step S702, the number of fast charging Nq is compared with the first fast charging threshold 1, to determine whether the number of fast charging Nq is less than the first preset number 1, i.e., whether the number of fast charging Nq is 0, if yes, steps S703, S704 and S705 are entered, to further compare the number of slow charging Ns with the corresponding slow charging threshold, respectively, if not, step S706 is entered, to further compare the number of slow charging Ns with the target slow charging threshold 4.

[0199] In step S703, the number of slow charging Ns is compared with the first slow charging threshold 4, to determine whether the number of slow charging Ns is less than or equal to the first slow charging threshold 4, if yes, step S707 is entered.

[0200] In step S704, the number of slow charging Ns is compared with the first slow charging threshold 4 and the second slow charging threshold 10, to determine whether the number of slow charging Ns is greater than the first slow charging threshold 4 and less than or equal to the second slow charging threshold 10, if yes, step S708 is entered.

[0201] In step S705, the number of slow charging Ns is compared with the second slow charging threshold 10, to determine whether the number of slow charging Ns is greater than the second slow charging threshold 10, if yes, step S709 is entered.

[0202] In step S706, the slow charging number of times Ns is compared with the target slow charging number of times threshold 4 to determine whether the slow charging number of times Ns is greater than or equal to the target slow charging number of times threshold 4. If yes, step S707 is entered.

[0203] In step S707, on one hand, in the case that the slow charging number of times Ns is less than or equal to the first slow charging number of times threshold 4, since the fast charging number of times Nq is 0 at this time, it is indicated that no fast charging has been performed for the battery of the target vehicle in the current time period, and the number of times of slow charging is also limited, the influence of slow charging on the durability, such as the life, of the battery is relatively small, and thus it can be considered that the influence of charging on the performance of the battery is small, and thus the starting state of charge SOC1 can be maintained unchanged as the updated starting state of charge SOC2. On the other hand, in the case that the fast charging number of times Nq is greater than or equal to the first fast charging number of times threshold 1, and the slow charging number of times Ns is greater than or equal to the target slow charging number of times threshold 4, it is indicated that the target vehicle is usually charged by using a household charging pile, since the household charging pile is convenient for charging, the user is more likely to use the household charging pile for frequent charging, and thus by maintaining the starting state of charge unchanged without increasing the starting state of charge, the battery can be used to supply power to the vehicle as much as possible, the pure electric cruising range is improved, the number of times of charging the battery is reduced as much as possible, and thus the frequency of charging the battery is reduced, which is helpful for maintaining and improving the durability, such as the life, of the battery.

[0204] In step S708, in the case that the slow charging number of times Ns is greater than the first slow charging number of times threshold 4 and less than or equal to the second slow charging number of times threshold 10, since the fast charging number of times Nq is 0 at this time, it is indicated that no fast charging has been performed for the battery of the target vehicle in the current time period, and there is a certain number of times of slow charging, and thus it can be considered that the user basically charges the battery by using the slow charging mode, and thus the starting state of charge SOC1 can be reduced by 5% to obtain the updated starting state of charge SOC2, so as to use the battery to supply power to the vehicle as much as possible, improve the pure electric cruising range, reduce the number of times of charging the battery as much as possible, and thus reduce the frequency of charging the battery, which is helpful for maintaining and improving the durability, such as the life, of the battery.

[0205] In step S709, in the case that the number of slow charging times Ns is greater than the second slow charging time threshold 10, since the number of fast charging times Nq is 0 at this time, it indicates that no fast charging has been performed for the battery of the target vehicle in the current time period, and the number of slow charging times is relatively large, which indicates that the user is more likely to use only the household charging pile for slow charging, and thus the current starting state of charge SOC1 can be reduced by 10% to obtain the updated starting state of charge SOC2, further reducing the starting SOC to maximize the power supply from the battery to the vehicle, improving the pure electric range, minimizing the number of battery charging times, and thus reducing the battery charging frequency, which helps to maintain and improve the battery durability, such as the service life.

[0206] Based on Figure 7 As can be seen from the specific example shown in the specific example:

[0207] In the case that the number of fast charging times is 0 times and the number of slow charging times is less than or equal to 4, the starting state of charge SOC1 is maintained unchanged to obtain the updated starting state of charge SOC2.

[0208] In the case that the number of fast charging times is 0 times and the number of slow charging times is greater than 4 and less than or equal to 10, the starting state of charge SOC1 is reduced by 5% to obtain the updated starting state of charge SOC2.

[0209] In the case that the number of fast charging times is 0 times and the number of slow charging times is greater than 10, the starting state of charge SOC1 is reduced by 10% to obtain the updated starting state of charge SOC2.

[0210] In the case that the number of fast charging times is greater than or equal to 1 time, if the number of slow charging times is greater than or equal to the target slow charging time threshold 4, the starting state of charge SOC1 is maintained unchanged to obtain the updated starting state of charge SOC2.

[0211] It should be understood that although each step in the flowchart involved in each embodiment as described above is displayed in sequence according to the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or steps or stages in other steps.

[0212] Based on the same inventive concept, the application further provides a range extender control device for implementing the range extender control method described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more range extender control device embodiments provided below can refer to the limitations of the range extender control method described above, which will not be repeated here.

[0213] In one embodiment, as shown in Figure 8 A range extender control device is provided, comprising: a data acquisition module 801 and an adjustment module 802, wherein:

[0214] The data acquisition module 801 is configured to acquire the number of fast charging times and the number of slow charging times of the target vehicle in a current time period, and the start state of charge of the range extender associated with the target vehicle.

[0215] The adjustment module 802 is configured to, in the case that the number of fast charging times is less than a first fast charging time threshold, update the start state of charge based on the slow charging time interval in which the number of slow charging times is located, using a first state of charge adjustment mode corresponding to the slow charging time interval to obtain an updated start state of charge, and the first state of charge adjustment mode includes maintaining unchanged and adjusting downward.

[0216] In some embodiments, the data acquisition module 801 is further configured to receive a charging pile connection signal, determine the charging type based on the charging pile connection signal, the charging type including fast charging and slow charging; in the case that the determined charging type is slow charging, record the charging pile connection time; in the case that a charging pile disconnection signal is received, record the charging pile disconnection time; based on the charging duration and the time interval in which the charging pile connection time and the charging pile disconnection time are located, determine whether to increase the number of slow charging times.

[0217] In some embodiments, the data acquisition module 801 is further configured to, in the case that the time interval in which the charging pile connection time and the charging pile disconnection time are located is within a preset time interval, and the charging duration is greater than or equal to a preset slow charging duration corresponding to the preset time interval, increase the number of slow charging times by 1; wherein the interval interval duration of the preset time interval is greater than the preset slow charging duration.

[0218] In some embodiments, the preset time interval is determined based on the low price time range.

[0219] In some embodiments, the preset time interval includes a plurality of preset time intervals, and the preset slow charging duration corresponding to each preset time interval is the same or different.

[0220] In some embodiments, the data acquisition module 801 is further configured to, in a case where the determined charging type is slow charging, record the charging pile connection time in a case where the charging duration is greater than or equal to the first preset duration.

[0221] In some embodiments, the data acquisition module 801 is further configured to, in a case where the determined charging type is fast charging, increase the fast charging count by 1 in a case where the charging duration is greater than or equal to the second preset duration.

[0222] In some embodiments, the slow charging count interval includes at least two, and each slow charging count interval corresponds to a down-regulation ratio, wherein the greater the endpoint value of the slow charging count interval, the greater the down-regulation ratio corresponding to the slow charging count interval.

[0223] The adjustment module 802 is further configured to down-regulate the starting state of charge by the down-regulation ratio corresponding to the slow charging count interval to obtain an updated starting state of charge.

[0224] In some embodiments, the adjustment module 802 is further configured to, in a case where the fast charging count is greater than or equal to the first fast charging count threshold, update the starting state of charge based on the fast charging count interval in which the fast charging count is located, to obtain an updated starting state of charge, the second state of charge adjustment mode including maintaining unchanged and upward adjustment.

[0225] In some embodiments, the fast charging count interval includes at least two, and each fast charging count interval corresponds to an up-regulation ratio or a state of charge target value, wherein the greater the endpoint value of the fast charging count interval, the greater the up-regulation ratio or the state of charge target value corresponding to the fast charging count interval.

[0226] The adjustment module 802 is further configured to up-regulate the starting state of charge by the up-regulation ratio corresponding to the fast charging count interval to obtain an updated starting state of charge.

[0227] Or

[0228] The state of charge target value corresponding to the fast charging count interval is taken as the updated starting state of charge.

[0229] In some embodiments, the adjustment module 802 is further configured to, in a case where the fast charging count is greater than or equal to the first fast charging count threshold and the slow charging count is greater than or equal to the target slow charging count threshold, maintain the starting state of charge unchanged.

[0230] The above-mentioned various modules in the range extender control device can be realized by software, hardware and combinations thereof, in whole or in part. The above-mentioned various modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above-mentioned various modules.

[0231] In one embodiment, there is provided an extender controller comprising a memory having a computer program stored therein and a processor, wherein the processor implements the steps of the extender control method in any of the embodiments described above when executing the computer program.

[0232] In some embodiments, there is provided a computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the extender control method in any of the embodiments described above.

[0233] In one embodiment, there is provided a computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the steps of the extender control method in any of the embodiments described above.

[0234] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0235] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

[0236] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A range extender control method, characterized in that, The method includes: The system obtains the number of fast charging and slow charging cycles of the target vehicle within the current time period, as well as the start-up charge state of the range extender associated with the target vehicle. If the number of fast charging cycles is less than the first fast charging cycle threshold, the starting state of charge is updated based on the slow charging cycle range in which the number of slow charging cycles falls, using a first state of charge adjustment method corresponding to the slow charging cycle range, to obtain the updated starting state of charge. The first state of charge adjustment method includes maintaining the current state and adjusting downwards.

2. The method according to claim 1, characterized in that, The method also includes: Receive a charging pile connection signal, and determine the charging type based on the charging pile connection signal, wherein the charging type includes fast charging and slow charging; If the charging type is determined to be slow charging, record the charging station connection time; Upon receiving a signal indicating that the charging station has disconnected, record the time the charging station disconnects. Based on the charging time, and the time interval between the charging pile connection time and the charging pile disconnection time, it is determined whether to increase the number of slow charging cycles.

3. The method according to claim 2, characterized in that, Based on the charging duration, and the time interval between the charging pile connection time and the charging pile disconnection time, determine whether to increase the number of slow charging cycles, including: If the time interval between the charging pile connection time and the charging pile disconnection time is within a preset time interval, and the charging time is greater than or equal to the preset slow charging time corresponding to the preset time interval, the number of slow charging times is incremented by 1. Wherein, the interval length of the preset time period is greater than the preset slow charging time.

4. The method according to claim 3, characterized in that, Includes at least one of the following: First item: The preset time period is determined based on the range of off-peak electricity prices. Second item: The preset time period includes multiple intervals, and the preset slow charging time corresponding to each preset time period may be the same or different.

5. The method according to claim 2, characterized in that, Includes at least one of the following: First item: If the charging type is determined to be slow charging, record the charging station connection time, including: If the charging type is determined to be slow charging, and the charging time is greater than or equal to the first preset time, the charging station connection time is recorded. Second item: The method also includes: If the charging type is determined to be fast charging, and the charging time is greater than or equal to the second preset time, the fast charging count is incremented by 1.

6. The method according to any one of claims 1 to 5, characterized in that, The slow charging cycle intervals include at least two, and each slow charging cycle interval corresponds to a reduction ratio. The larger the endpoint value of the slow charging cycle interval, the larger the reduction ratio corresponding to the slow charging cycle interval. Based on the slow charging cycle range in which the slow charging cycles fall, a first state of charge adjustment method corresponding to the slow charging cycle range is used to update the startup state of charge, obtaining the updated startup state of charge, including: The startup charge state is adjusted by the downward adjustment ratio corresponding to the slow charging number range to obtain the updated startup charge state.

7. The method according to any one of claims 1 to 5, characterized in that, The method also includes: When the number of fast charging cycles is greater than or equal to the first fast charging cycle threshold, based on the fast charging cycle range in which the fast charging cycle falls, the startup state of charge is updated using a second state of charge adjustment method corresponding to the fast charging cycle range, and the updated startup state of charge is obtained. The second state of charge adjustment method includes maintaining the current state of charge and adjusting it upwards.

8. The method according to claim 7, characterized in that, The fast charging cycle interval includes at least two, and each fast charging cycle interval corresponds to an adjustment ratio or a target value of state of charge. The larger the endpoint value of the fast charging cycle interval, the larger the adjustment ratio or target value of the fast charging cycle interval. Based on the fast charging cycle range in which the fast charging cycle falls, a second state of charge adjustment method corresponding to the fast charging cycle range is used to update the startup state of charge, obtaining the updated startup state of charge, including: The startup charge state is adjusted up by the up adjustment ratio corresponding to the fast charging number range to obtain the updated startup charge state. or The target value of the state of charge corresponding to the fast charging cycle interval is used as the updated startup state of charge.

9. The method according to any one of claims 1 to 5, characterized in that, The method also includes: If the number of fast charging cycles is greater than or equal to the first fast charging cycle threshold, and the number of slow charging cycles is greater than or equal to the target slow charging cycle threshold, the starting charge state remains unchanged.

10. The method according to any one of claims 1 to 5, characterized in that, The method also includes: If the number of fast charging cycles is greater than or equal to the target fast charging cycle threshold, the starting charging state is set to the preset charging state.

11. A range extender control device, characterized in that, The device includes: The data acquisition module is used to acquire the number of fast charging and slow charging times of the target vehicle in the current time period, as well as the start-up charge status of the range extender associated with the target vehicle. The adjustment module is used to update the startup charge state based on the slow charging number range where the fast charging number is located, using a first state of charge adjustment method corresponding to the slow charging number range, when the number of fast charging times is less than a first fast charging number threshold, so as to obtain the updated startup charge state. The first state of charge adjustment method includes maintaining the status quo and adjusting downward.

12. A range extender controller, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 9.

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