Vehicle range extender control method, electronic equipment and computer readable storage medium

Abstract

The invention relates to the technical field of vehicle range extending control, and discloses a control method of a vehicle range extender, electronic equipment and a computer readable storage medium, and the control method comprises the following steps: when it is detected that a vehicle is in a preset driving state, obtaining a current electric quantity state of a battery pack of the vehicle; if the current electric quantity state of the battery pack is in the preset continuous power-down state, obtaining the target remaining electric quantity and the current remaining electric quantity of the battery pack; and a target compensation coefficient is determined based on the electric quantity relation between the target remaining electric quantity and the current remaining electric quantity, the accessory power of the vehicle is compensated through the target compensation coefficient, and a range extender of the vehicle is controlled to generate power based on the compensated accessory power. Therefore, when the range extender generates power based on the compensated accessory power, the power generation power can be improved to a certain extent, so that the power failure degree of the battery pack is reduced, and the problem of power shortage of the vehicle in a special driving state is solved.

Description

Technical Field

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

[0002] Extended-range new energy vehicles are becoming more and more widely used. When the power level of the battery pack is lower than a certain level, the range extender can generate electricity to provide driving power for the vehicle and can also replenish the power of the battery pack.

[0003] At present, when the vehicle is driving at low speed, the range extender generates less power. If the vehicle is in a high or low temperature environment, the power of accessories such as the compressor or heater of the vehicle is generally large, and the power generation of the vehicle cannot actually meet the vehicle's power demand, causing the battery pack to continue to lose power, resulting in a power shortage problem in the vehicle. Summary of the invention

[0004] In view of the above problems, the present application provides a control method, electronic device and computer-readable storage medium for a vehicle range extender, which can improve the power generation power to a certain extent, thereby reducing the power loss of the battery pack, so as to alleviate the problem of power loss of the vehicle under special driving conditions.

[0005] A first aspect of the present application provides a control method for a vehicle range extender, comprising: upon detecting that the vehicle is in a preset driving state, obtaining a current power state of a battery pack of the vehicle; wherein the current vehicle speed of the vehicle in the preset driving state is less than a preset vehicle speed, or the average vehicle speed in a preset historical period is less than a preset average vehicle speed; if the current power state of the battery pack is in a preset continuous power-off state, obtaining a target remaining power and a current remaining power of the battery pack; determining a target compensation coefficient based on a power relationship between the target remaining power and the current remaining power, compensating the accessory power of the vehicle by the target compensation coefficient, and controlling the vehicle's range extender to operate and generate electricity based on the compensated accessory power.

[0006] In some specific embodiments, the step of obtaining the current power state of the vehicle's battery pack includes: obtaining the degree of power loss of the vehicle's battery pack within a preset time period; wherein the end time of the preset time period is the current time; if the power loss degree is the preset power loss degree, then determining that the current power state of the vehicle's battery pack is a preset continuous power loss state.

[0007] In some specific embodiments, the step of obtaining the power loss degree of the battery pack of the vehicle within a preset time period includes: obtaining the power loss amount of the battery pack of the vehicle within the preset time period; if the power loss amount is greater than a first preset power loss amount, determining that the power loss degree of the battery pack within the preset time period is a preset power loss degree.

[0008] In some specific embodiments, the step of obtaining the degree of power loss of a battery pack of a vehicle within a preset time period includes: obtaining the power loss states of the battery pack of the vehicle corresponding to multiple consecutive sub-periods; wherein, multiple consecutive sub-periods constitute a preset time period; if the ratio of the number of sub-periods in which the power loss state is the preset power loss state to the number of all sub-periods is greater than a preset ratio, then it is determined that the power loss degree of the battery pack within the preset time period is the preset power loss degree.

[0009] In some specific embodiments, the step of obtaining the power-off states of the battery pack of the vehicle corresponding to multiple consecutive sub-periods includes: obtaining the first power-off states of the battery pack of the vehicle corresponding to a first number of consecutive first sub-periods, or obtaining the second power-off states of the battery pack corresponding to a second number of consecutive second sub-periods; wherein, the first number is less than the second number, and the duration of the first sub-period is shorter than the duration of the second sub-period; if the ratio of the number of sub-periods in which the power-off state is a preset power-off state to the number of all sub-periods is greater than a preset ratio, then determining that the power-off degree of the battery pack within the preset time period is a preset power-off degree, includes: if the ratio of the number of first sub-periods in which the power loss amount is greater than 0 to the first number is greater than the first preset ratio, or the ratio of the number of second sub-periods in which the power loss amount is greater than the second preset power loss amount to the second number is greater than the second preset ratio, then determining that the power-off degree of the battery pack within the preset time period is the preset power-off degree.

[0010] In some specific embodiments, if the current power state of the battery pack is in a preset continuous power-off state, after the step, it also includes: obtaining a preset speed range in which the current speed of the vehicle is located; wherein the number of preset speed ranges is multiple and constitutes a continuous speed interval; determining a target compensation coefficient based on the power relationship between the target remaining power and the current remaining power, including: determining the target compensation coefficient based on the power relationship between the target remaining power and the current remaining power and the preset speed interval in which the current speed is located; wherein there is a preset corresponding relationship between the power relationship, the preset speed interval and the target compensation coefficient.

[0011] In some specific embodiments, the step of determining a target compensation coefficient based on the power relationship between the target remaining power and the current remaining power includes: when the power difference between the target remaining power and the current remaining power is greater than a preset power difference, if the difference between the target remaining power and the current remaining power is a first difference, then the target compensation coefficient is determined to be a first target compensation coefficient; if the difference between the target remaining power and the current remaining power is a second difference, then the target compensation coefficient is determined to be a second target compensation coefficient; wherein the second difference is greater than the first difference, the degree of compensation for the accessory power by the second compensation coefficient is greater than the compensation corresponding to the first compensation coefficient, and the accessory power after compensation is greater than the accessory power before compensation.

[0012] In some specific embodiments, the step of determining a target compensation coefficient based on the charge relationship between the target remaining power and the current remaining power and the preset vehicle speed range of the current vehicle speed includes: if the charge relationship between the target remaining power and the current remaining power is a first charge relationship, and the current vehicle speed is in a first preset vehicle speed range, then determining the target compensation coefficient to be a third compensation coefficient; if the charge relationship between the target remaining power and the current remaining power is a first charge relationship, and the current vehicle speed is in a second preset vehicle speed range, then determining the target compensation coefficient to be a fourth compensation coefficient; wherein, the minimum vehicle speed in the first preset vehicle speed range is greater than the preset vehicle speed, and the average vehicle speed in the second preset vehicle speed range is greater than the average vehicle speed in the first preset vehicle speed range, the degree of compensation for accessory power by the fourth compensation coefficient is less than the degree of compensation by the third compensation coefficient, and the accessory power after compensation is greater than the accessory power before compensation.

[0013] In some specific embodiments, when it is detected that the vehicle is in a preset driving state, before the step of obtaining the current charge state of the vehicle's battery pack, it includes: obtaining the vehicle's current speed or the average speed within a preset historical period, and obtaining the current ambient temperature of the vehicle's environment; if the current speed is less than the preset speed or the average speed within the preset historical period is less than the preset average speed, and the current ambient temperature is outside the preset temperature range, it is determined that the vehicle is in a preset driving state.

[0014] A second aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein when the computer program is executed by the processor, any of the above-mentioned vehicle range extender control methods is implemented.

[0015] A third aspect of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, a control method for a vehicle range extender as described above is implemented.

[0016] The present application has at least the following beneficial technical effects: Based on the control method, electronic device and computer-readable storage medium of the vehicle range extender provided by the present application, the method includes: when it is detected that the vehicle is in a preset driving state, the current power state of the vehicle's battery pack is obtained; wherein the current speed of the vehicle in the preset driving state is less than the preset speed, or the average speed in the preset historical period is less than the preset average speed; if the current power state of the battery pack is in a preset continuous power-off state, the target remaining power and the current remaining power of the battery pack are obtained; based on the power relationship between the target remaining power and the current remaining power, the target compensation coefficient is determined, and the accessory power of the vehicle is compensated by the target compensation coefficient, and the vehicle's range extender is controlled to work and generate electricity based on the compensated accessory power. Therefore, when the range extender generates electricity based on the compensated accessory power, it can increase the power generation power to a certain extent, thereby reducing the degree of power loss of the battery pack, so as to reduce the problem of power shortage of the vehicle in special driving conditions.

[0017] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0019] Figure 1 It is a flow chart of an embodiment of a control method for a vehicle range extender provided by the present application;

[0020] Figure 2 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0021] Figure 3 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0022] Figure 4 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0023] Figure 5 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0024] Figure 6 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0025] Figure 7 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0026] Figure 8 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0027] Fig. 9 It is a schematic diagram of the structural framework of an embodiment of the electronic device provided by the present application;

[0028] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided by the present application. DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] The first aspect of the present application provides a control method for a vehicle range extender. Figure 1 1 is a flow chart of an embodiment of a control method for a vehicle range extender provided by the present application. Figure 1 , the method comprises the following steps:

[0032] S101: When it is detected that the vehicle is in a preset driving state, the current charge state of the vehicle's battery pack is obtained; wherein the current speed of the vehicle in the preset driving state is less than the preset speed, or the average speed in a preset historical period is less than the preset average speed.

[0033] Among them, the driving state of the vehicle can be detected during the process of the range extender working to generate electricity, and then determine whether the vehicle is in a preset driving state. When detecting the driving state of the vehicle, the current vehicle speed can be detected to determine whether the current vehicle speed is less than the preset vehicle speed. Among them, the preset vehicle speed can be a smaller vehicle speed. At this time, when it is detected that the current vehicle speed is less than the preset vehicle speed, it means that the vehicle is traveling at a lower speed. At this time, even if the range extender generates electricity, it generates electricity at a lower power.

[0034] In some application scenarios, the average speed of the vehicle in a preset historical period can also be detected, and the average speed needs to be less than the preset average speed in order to determine the vehicle's driving state as the preset driving state. Among them, the end time of the preset historical period can be the current time, and the duration of the preset historical period is pre-set according to actual needs. In some application scenarios, the preset average speed and the preset speed can be the same or different. For example, the preset speed can be set to 30KPH, and the preset average speed can be set to 20KPH.

[0035] In other application scenarios, the current ambient temperature of the vehicle's environment can also be detected to determine whether the current ambient temperature is outside the preset ambient temperature range. The preset ambient temperature range can be a larger temperature range, and the minimum value of the preset ambient temperature range can be set to a smaller value, and the maximum value of the preset ambient temperature range can be set to a larger value. At this time, the determination of the preset driving state needs to consider both the vehicle speed and the ambient temperature.

[0036] For example, the vehicle is considered to be in a preset driving state only when it is detected that the current vehicle speed is less than a preset vehicle speed or the average vehicle speed in a preset historical period is less than a preset average vehicle speed, and the current ambient temperature is outside a preset temperature range. At this time, when it is detected that the vehicle is in a preset driving state, before the step of obtaining the current state of charge of the battery pack of the vehicle, it includes: obtaining the current vehicle speed of the vehicle or the average vehicle speed in a preset historical period, and obtaining the current ambient temperature of the environment in which the vehicle is located; if the current vehicle speed is less than the preset vehicle speed or the average vehicle speed in a preset historical period is less than the preset average vehicle speed, and the current ambient temperature is outside the preset temperature range, it is determined that the vehicle is in a preset driving state.

[0037] It should be understood that when the vehicle is in a preset driving state, due to the low speed of the vehicle, the power generation of the vehicle range extender is generally low, which can easily lead to a lack of power in the vehicle. If the ambient temperature of the vehicle's environment is high or low, the air-conditioning system will work, resulting in a high compressor power, and when the ambient temperature is low, the power of the heater in the thermal circulation system is generally large, which will cause the vehicle's accessory power to be large, making the vehicle's power loss more serious. Therefore, when the vehicle is in a preset driving state, the power generated by the range extender cannot meet the sum of the vehicle's driving power and accessory power, resulting in the battery pack power supply causing the battery pack's power to continue to decrease, which may lead to a power loss problem.

[0038] In order to understand whether the vehicle is in a power-off state under a preset driving state, this step obtains the current power state of the vehicle's battery pack.

[0039] S102: If the current power state of the battery pack is in a preset continuous power-off state, obtain the target remaining power and the current remaining power of the battery pack.

[0040] It should be understood that the current state of charge of the battery pack can reflect the change state of the battery pack, such as the state of rising power and the state of power failure. When the current state of charge is in the state of power failure, it will not be directly determined as the preset continuous power failure state, and certain conditions must be met before it can be determined as the preset continuous power failure state. Among them, the preset continuous power failure state reflects that the battery pack is in a state of continuous power failure, and its related determination parameters can be preset.

[0041] If the current power state of the battery pack is in the preset continuous power-off state, it means that the battery pack is continuously losing power and is likely to continue losing power in the subsequent process. At this time, the target remaining power and the current remaining power of the battery pack are obtained to make further control decisions based on these two parameters in the subsequent process.

[0042] The target remaining power of the battery pack is related to the vehicle mode. The vehicle mode may include forced EV mode, pure electric priority mode, automatic mode, fuel priority mode, etc., which may correspond to target remaining power of 10%, 20%, 30% and 70% respectively. When the remaining power of the battery pack is lower than the target remaining power, the range extender works to generate electricity.

[0043] S103: Determine a target compensation coefficient based on a power relationship between the target remaining power and the current remaining power, compensate the accessory power of the vehicle by the target compensation coefficient, and control the range extender of the vehicle to operate and generate electricity based on the compensated accessory power.

[0044] At this time, the target remaining power can be greater than the current remaining power or less than the current remaining power, and the relationship between the target remaining power and the current remaining power reflects whether the current power of the battery pack is sufficient relative to the target remaining power.

[0045] When the vehicle is in a preset continuous power-off state, the battery pack continues to lose power. After determining whether the remaining power is sufficient based on the power relationship, the target compensation coefficient can be determined based on whether it is sufficient. For example, if the target remaining power is less than the current remaining power, it means that the power is sufficient at this time. At this time, the accessory power can actually not be compensated, and the target compensation coefficient can be set to a coefficient that does not compensate for the accessory power. If the target remaining power is greater than the current remaining power, it means that the power is not sufficient. At this time, the target compensation coefficient for supplementing the accessory power can be set to increase the accessory power after compensation. Moreover, at this time, the target compensation coefficient can be determined based on the power difference between the target remaining power and the current remaining power, so that the target compensation coefficient is suitable for the current power state of the battery pack.

[0046] It should be understood that the power generation of the range extender includes the driving power and accessory power of the vehicle. When the range extender generates electricity based on the compensated accessory power, the compensated accessory power increases, so that the power generation power of the range extender increases, and more electricity can be generated to meet the power demand of the vehicle, thereby reducing the power loss of the battery pack and alleviating the problem of power loss of the vehicle under the preset driving state.

[0047] Figure 2 It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0048] Combination Figure 2 In some specific embodiments, the step of obtaining the current state of charge of the battery pack of the vehicle includes:

[0049] S201: Obtain the power loss degree of the battery pack of the vehicle within a preset time period; wherein the end time of the preset time period is the current time.

[0050] The duration of the preset period can be preset according to actual needs, but the duration of the preset period should not be set too long so that the power loss degree within the preset period can reflect the current power loss degree of the battery pack.

[0051] S202: If the power failure degree is the preset power failure degree, it is determined that the current power state of the battery pack of the vehicle is the preset continuous power failure state.

[0052] The parameters related to the preset power-off degree are preset, and the preset power-off degree corresponds to the preset continuous power-off state. If the power-off degree in the preset period is the preset power-off degree, it means that the battery pack will be in the preset power-off degree in the current and subsequent period, that is, the battery pack will be in the preset continuous power-off state in the current and subsequent period.

[0053] Figure 3 It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0054] Combination Figure 3 In some specific embodiments, the step of obtaining the degree of power loss of the battery pack of the vehicle within a preset period of time, that is, the above-mentioned step S201, includes:

[0055] S301: Obtaining the power consumption of the battery pack of the vehicle within a preset period of time.

[0056] This step obtains the power loss of the battery pack within the preset period, so that the power loss reflects the degree of power loss within the preset period. In some application scenarios, the duration of the preset period in this embodiment can be set to 10 minutes.

[0057] S302: If the power loss amount is greater than a first preset power loss amount, determining that the power loss degree of the battery pack within the preset time period is a preset power loss degree.

[0058] The first preset power loss amount is preset and may be a relatively large power loss amount. In some application scenarios, the first preset power loss amount may be set to 5%.

[0059] When the power loss is greater than the first preset power loss, it means that the power loss in the preset period is large. This embodiment uses this power loss degree as the preset power loss degree to further determine that the battery pack is in a preset continuous power loss state.

[0060] Figure 4 It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0061] Combination Figure 4 In some specific embodiments, the step of obtaining the degree of power loss of the battery pack of the vehicle within a preset period of time, that is, the above-mentioned step S201, includes:

[0062] S401: Obtain the power-off states of the battery pack of the vehicle corresponding to a plurality of consecutive sub-periods respectively; wherein the plurality of consecutive sub-periods constitute a preset period.

[0063] At this time, the preset time period includes multiple continuous sub-periods, and the duration of the continuous sub-periods can be relatively short. The power-off status of the battery pack of the vehicle corresponding to the multiple continuous sub-periods is obtained, that is, the power-off status corresponding to each sub-period is obtained. The power-off status corresponding to the sub-period includes whether the power is off and the amount of power off when the power is off.

[0064] S402: If the ratio of the number of sub-periods in which the power-off state is the preset power-off state to the number of all sub-periods is greater than a preset ratio, it is determined that the power-off degree of the battery pack in the preset period is the preset power-off degree.

[0065] The preset power-off state is preset, and the relevant parameters may include parameter information of whether power is off, and parameter information of the amount of power off during power off. When the power-off state of the sub-period is obtained, it is compared with the preset power-off state to determine whether the power-off state corresponding to the sub-period is the preset power-off state.

[0066] It should be understood that the ratio of the number of sub-periods in the preset power-off state to the number of sub-periods can reflect the number of sub-periods that meet the preset power-off state among all sub-periods. If it is greater than the preset ratio, it means that there are more sub-periods that meet the preset power-off state, indicating that the battery pack is continuously losing power. At this time, the power-off degree corresponding to the preset period is used as the preset power-off degree.

[0067] Figure 5It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0068] Combination Figure 5 In some specific embodiments, the step of obtaining the power-off states of the battery pack of the vehicle corresponding to a plurality of consecutive sub-periods, i.e., the above-mentioned step S401, includes:

[0069] S501: Obtain the first power-off states of the battery pack of the vehicle corresponding to a first number of consecutive first sub-periods, or obtain the second power-off states of the battery pack corresponding to a second number of consecutive second sub-periods; wherein the first number is smaller than the second number, and the duration of the first sub-period is shorter than the duration of the second sub-period.

[0070] At this time, a first number of continuous first sub-periods constitute a preset period, ie, a first preset period, and a second number of continuous second sub-periods constitute a preset period, ie, a second preset period.

[0071] In some application scenarios, the first number may be 5, and the duration corresponding to the first sub-period may be 1 minute; the second number may be 10, and the duration corresponding to the second sub-period may be 2 minutes.

[0072] If the ratio of the number of sub-periods in which the power-off state is the preset power-off state to the number of all sub-periods is greater than the preset ratio, the step of determining that the power-off degree of the battery pack in the preset period is the preset power-off degree, i.e., the above-mentioned step S402, includes:

[0073] S502: If the ratio of the number of first sub-periods in which the power loss is greater than 0 to the first number is greater than a first preset ratio, or the ratio of the number of second sub-periods in which the power loss is greater than a second preset power loss to the second number is greater than a second preset ratio, then it is determined that the power loss level of the battery pack within the preset time period is the preset power loss level.

[0074] At this time, the first preset power-off state corresponding to the first sub-period is that the power-off amount is greater than 0, and the second preset power-off state corresponding to the second sub-period is that the power-off amount is greater than the second preset power-off amount.

[0075] Therefore, the number of first sub-periods in which the power-off amount is greater than 0, that is, the number of first sub-periods in which the power-off state is the first preset power-off state, and the number of second sub-periods in which the power-off amount is greater than the second preset power-off amount, that is, the number of second sub-periods in which the power-off state is the second preset power-off state.

[0076] In some application scenarios, the first preset ratio may be greater than the second preset ratio, for example, the first preset ratio may be set to 80%, and the second preset ratio may be set to 60%. It should be understood that compared with the recognition of the first preset power-off state, the recognition of the second preset power-off state is more demanding, requiring the power loss to be greater than the specific second preset power loss. Moreover, the second number of the second sub-period is greater than the first number of the first sub-period. Therefore, when the second preset ratio is not too high, it can actually be explained that the degree of power failure in the preset period is large, which can be used as the preset power failure degree, so the second preset ratio is set to be less than the first preset ratio.

[0077] Figure 6 It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0078] Combination Figure 6 In some specific embodiments, if the current power state of the battery pack is in a preset continuous power-off state, after the step, the method further includes:

[0079] S601: Obtaining a preset speed range in which the current speed of the vehicle is located; wherein the preset speed ranges are multiple and constitute continuous speed intervals.

[0080] Among them, the interval widths corresponding to all preset vehicle speed intervals are equal, that is, the difference between the maximum and minimum vehicle speeds is the same.

[0081] The target compensation coefficient is determined based on the power relationship between the target remaining power and the current remaining power, including:

[0082] S602: Determine a target compensation coefficient based on the relationship between the target remaining power and the current remaining power and the preset vehicle speed range in which the current vehicle speed is located; wherein there is a preset corresponding relationship between the power relationship, the preset vehicle speed range and the target compensation coefficient.

[0083] It should be understood that the speed of the vehicle will affect the power generation of the vehicle. The lower the speed, the smaller the power generation. At this time, the power of the accessories generally has a greater impact on the power of the battery pack. Therefore, this embodiment introduces a preset speed range to determine the target compensation coefficient, so that the determined target compensation coefficient meets the requirements at the current speed and is more in line with the actual operating state of the vehicle.

[0084] The corresponding relationship between the vehicle's power relationship, the preset speed range and the target compensation coefficient is preset and stored, and then after the power relationship and the preset speed range are obtained, the target compensation coefficient is determined according to the corresponding relationship.

[0085] Figure 7 It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0086] Combination Figure 7 As well as the above embodiments, in some specific embodiments, the step of determining the target compensation coefficient based on the power relationship between the target remaining power and the current remaining power includes:

[0087] S701: When the power difference between the target remaining power and the current remaining power is greater than the preset power difference, if the power difference between the target remaining power and the current remaining power is a first difference, determining the target compensation coefficient to be a first target compensation coefficient.

[0088] Among them, at this time, when the target remaining power is greater than the current remaining power, and the power difference between the target remaining power and the current remaining power is less than or equal to the preset power difference, it means that although the power of the battery pack is insufficient, the power of the battery pack is not in a seriously insufficient state. At this time, the target compensation coefficient can be set, that is, the accessory power is not compensated. The preset power difference can be a larger difference. When the power difference between the target remaining power and the current remaining power is greater than the preset power difference, it means that the power of the battery pack is in a seriously insufficient state, and the accessory power needs to be compensated by the target compensation coefficient.

[0089] At this time, the target compensation coefficient corresponding to the first difference value greater than the preset power difference value is set as the first target compensation coefficient, and a corresponding relationship between the two is established in advance.

[0090] S702: If the difference between the target remaining power and the current remaining power is a second difference, determining the target compensation coefficient to be a second target compensation coefficient.

[0091] At this time, the target compensation coefficient corresponding to the second difference value greater than the preset power difference value is set as the second target compensation coefficient, and a corresponding relationship between the two is established in advance.

[0092] Among them, the second difference is greater than the first difference, the compensation degree of the second compensation coefficient for the accessory power is greater than the compensation degree corresponding to the first compensation coefficient, and the accessory power after compensation is greater than the accessory power before compensation. Therefore, it can be known that when the power difference between the target remaining power and the current remaining power is greater than the preset power difference, the greater the power difference, the greater the compensation of the accessory power by the corresponding target compensation coefficient.

[0093] It should be understood that when the power difference is larger, it means that the battery pack is more seriously lacking in power, so a greater degree of compensation for the accessory power is required, that is, the corresponding target compensation coefficient needs to be greater to compensate for the accessory power.

[0094] Figure 8 It is a flow chart of another embodiment of the control method of the vehicle range extender provided in the present application.

[0095] Combination Figure 8In some specific embodiments, the step of determining the target compensation coefficient based on the power relationship between the target remaining power and the current remaining power and the preset vehicle speed range of the current vehicle speed, that is, the above-mentioned step S602, includes:

[0096] S801: If the power relationship between the target remaining power and the current remaining power is a first power relationship, and the current vehicle speed is in a first preset vehicle speed range, then determining the target compensation coefficient to be a third compensation coefficient.

[0097] At this time, a preset corresponding relationship is established and stored among the first power relationship, the first preset vehicle speed range and the third compensation coefficient.

[0098] S802: If the power relationship between the target remaining power and the current remaining power is the first power relationship, and the current vehicle speed is in the second preset vehicle speed range, then determining the target compensation coefficient to be the fourth compensation coefficient.

[0099] At this time, a preset corresponding relationship is established and stored among the first power relationship, the second preset vehicle speed range and the fourth compensation coefficient.

[0100] Among them, the minimum vehicle speed of the first preset vehicle speed interval is greater than the preset vehicle speed, and the average vehicle speed of the second preset vehicle speed interval is greater than the average vehicle speed of the first preset vehicle speed interval, the compensation degree of the fourth compensation coefficient for the accessory power is less than the compensation degree of the third compensation coefficient, and the accessory power after compensation is greater than the accessory power before compensation.

[0101] Combined with the above content, it can be seen that, under the condition that the power relationship remains unchanged, if the current vehicle speed is greater than the preset speed, then the lower the average speed of the corresponding preset speed interval, the greater the compensation of the corresponding target compensation coefficient for the accessory power. It should be understood that when the current vehicle speed is low, the power of the battery pack is greatly affected by the accessory power, and the power loss will be more serious. Therefore, the corresponding target compensation coefficient is set to compensate the accessory power more to reduce power loss.

[0102] In combination with the above embodiments, if the above embodiments are combined, when the compensation coefficient is determined by the power relationship and the preset speed interval, when the power relationship remains unchanged, the lower the average speed in the preset speed interval, the greater the compensation of the corresponding target compensation coefficient for the accessory power. When the preset speed interval remains unchanged, the greater the power difference, the greater the compensation of the corresponding target compensation coefficient for the accessory power.

[0103] A second aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, which, when executed by the processor, implements the control method of the vehicle range extender in any of the above embodiments.

[0104] Fig. 9 It is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in the present application.

[0105] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502, wherein the CPU 501 is a processor and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes according to the program stored in the ROM 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502 and the RAM 503 are connected to each other via the bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0106] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0107] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0108] A third aspect of the present application provides a computer-readable storage medium 40, Fig.10 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in the present application.

[0109] The computer-readable storage medium 40 stores a computer program 41 , and when the computer program 41 is executed by the processor, the control method of the vehicle range extender in any of the above embodiments is implemented.

[0110] It should be noted that the computer-readable medium 40 shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0111] In summary, based on the control method, electronic device and computer-readable storage medium of the vehicle range extender provided by the present application, the method includes: when it is detected that the vehicle is in a preset driving state, the current power state of the battery pack of the vehicle is obtained; wherein, the current speed of the vehicle in the preset driving state is less than the preset speed, and the ambient temperature is outside the preset temperature range; if the current power state of the battery pack is in a preset continuous power-off state, the target remaining power and the current remaining power of the battery pack are obtained; based on the power relationship between the target remaining power and the current remaining power, the target compensation coefficient is determined, and the accessory power of the vehicle is compensated by the target compensation coefficient, and the vehicle's range extender is controlled to work and generate electricity based on the compensated accessory power. Therefore, when the range extender generates electricity based on the compensated accessory power, it can increase the power generation power to a certain extent, thereby reducing the degree of power loss of the battery pack, so as to reduce the problem of power shortage of the vehicle in special driving conditions.

[0112] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A control method for a vehicle range extender, characterized in that: include: When it is detected that the vehicle is in a preset driving state, the current power state of the battery pack of the vehicle is obtained; wherein the current speed of the vehicle in the preset driving state is less than the preset speed, or the average speed in a preset historical period is less than the preset average speed; If the current power state of the battery pack is in a preset continuous power-off state, obtaining a target remaining power and a current remaining power of the battery pack; A target compensation coefficient is determined based on the power relationship between the target remaining power and the current remaining power, and the accessory power of the vehicle is compensated by the target compensation coefficient, and the range extender of the vehicle is controlled to operate and generate electricity based on the compensated accessory power.

2. The control method of a vehicle range extender according to claim 1, characterized in that: The step of obtaining the current state of charge of the battery pack of the vehicle comprises: Obtaining the degree of power loss of the battery pack of the vehicle within a preset time period; wherein the end time of the preset time period is the current time; If the power failure degree is a preset power failure degree, it is determined that the current power state of the battery pack of the vehicle is a preset continuous power failure state.

3. The control method of the vehicle range extender according to claim 2, characterized in that: The step of obtaining the degree of power loss of the battery pack of the vehicle within a preset period of time includes: Obtaining the power loss of the battery pack of the vehicle within a preset period of time; If the power loss amount is greater than a first preset power loss amount, it is determined that the power loss degree of the battery pack within the preset time period is a preset power loss degree.

4. The control method of a vehicle range extender according to claim 2, characterized in that: The step of obtaining the degree of power loss of the battery pack of the vehicle within a preset period of time includes: Obtaining power-off states of the battery pack of the vehicle corresponding to a plurality of consecutive sub-periods respectively; wherein the plurality of consecutive sub-periods constitute a preset period; If the ratio of the number of the sub-periods in which the power-off state is the preset power-off state to the number of all the sub-periods is greater than a preset ratio, it is determined that the power-off degree of the battery pack in the preset period is the preset power-off degree.

5. The control method of a vehicle range extender according to claim 4, characterized in that: The step of obtaining the power-off states of the battery pack of the vehicle corresponding to a plurality of consecutive sub-periods respectively comprises: Obtaining a first power-off state of the battery pack of the vehicle corresponding to a first number of consecutive first sub-periods, or obtaining a second power-off state of the battery pack corresponding to a second number of consecutive second sub-periods; wherein the first number is less than the second number, and the duration of the first sub-period is shorter than the duration of the second sub-period; If the ratio of the number of the sub-periods in which the power-off state is the preset power-off state to the number of all the sub-periods is greater than a preset ratio, the step of determining that the power-off degree of the battery pack in the preset period is the preset power-off degree includes: If the ratio of the number of the first sub-periods in which the power loss is greater than 0 to the first number is greater than a first preset ratio, or the ratio of the number of the second sub-periods in which the power loss is greater than a second preset power loss to the second number is greater than a second preset ratio, it is determined that the power loss level of the battery pack within the preset time period is the preset power loss level.

6. The control method of a vehicle range extender according to claim 1, characterized in that: If the current power state of the battery pack is in a preset continuous power-off state, after the step, the method further includes: Obtaining a preset speed range in which the current speed of the vehicle is located; wherein the preset speed ranges are multiple and constitute a continuous speed interval; Determining a target compensation coefficient based on a power relationship between the target remaining power and the current remaining power includes: A target compensation coefficient is determined based on the power relationship between the target remaining power and the current remaining power and the preset vehicle speed range in which the current vehicle speed is located; wherein there is a preset corresponding relationship between the power relationship, the preset vehicle speed range and the target compensation coefficient.

7. The control method of a vehicle range extender according to claim 1, characterized in that: The step of determining a target compensation coefficient based on the power relationship between the target remaining power and the current remaining power includes: When the power difference between the target remaining power and the current remaining power is greater than the preset power difference, if the difference between the target remaining power and the current remaining power is a first difference, determining that the target compensation coefficient is a first target compensation coefficient; If the difference between the target remaining power and the current remaining power is a second difference, determining the target compensation coefficient to be a second target compensation coefficient; The second difference is greater than the first difference, the compensation degree of the second compensation coefficient for the accessory power is greater than the compensation degree corresponding to the first compensation coefficient, and the accessory power after compensation is greater than the accessory power before compensation.

8. The control method of a vehicle range extender according to claim 6, characterized in that: The step of determining a target compensation coefficient based on the power relationship between the target remaining power and the current remaining power and the preset vehicle speed range of the current vehicle speed includes: If the power relationship between the target remaining power and the current remaining power is a first power relationship, and the current vehicle speed is in a first preset vehicle speed range, determining the target compensation coefficient to be a third compensation coefficient; If the power relationship between the target remaining power and the current remaining power is the first power relationship, and the current vehicle speed is in the second preset vehicle speed range, determining the target compensation coefficient to be a fourth compensation coefficient; Among them, the minimum vehicle speed of the first preset vehicle speed interval is greater than the preset vehicle speed, and the average vehicle speed of the second preset vehicle speed interval is greater than the average vehicle speed of the first preset vehicle speed interval, the compensation degree of the fourth compensation coefficient for the accessory power is less than the compensation degree of the third compensation coefficient, and the accessory power after compensation is greater than the accessory power before compensation.

9. The control method of a vehicle range extender according to claim 1, characterized in that: When it is detected that the vehicle is in a preset driving state, before the step of obtaining the current power state of the battery pack of the vehicle, the method includes: Obtaining the current speed of the vehicle or the average speed in a preset historical period, and obtaining the current ambient temperature of the environment in which the vehicle is located; If the current vehicle speed is less than a preset vehicle speed or the average vehicle speed in the preset historical period is less than a preset average vehicle speed, and the current ambient temperature is outside a preset temperature range, it is determined that the vehicle is in a preset driving state.

10. An electronic device, characterized in that: include: processor; A memory for storing a computer program, wherein when the computer program is executed by the processor, the control method of the vehicle range extender according to any one of claims 1 to 9 is implemented.

11. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the control method of the vehicle range extender according to any one of claims 1 to 9 is implemented.

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