Control method and device of vehicle range extending system, vehicle and storage medium

Abstract

The invention discloses a control method and device for a vehicle range extending system, a vehicle and a storage medium. The control method for the vehicle range extending system comprises the steps that when the electric quantity value of the vehicle at the current moment and the electric quantity value of the vehicle at the current moment are both located between an electric quantity early warning value and an electric quantity threshold value, the electric quantity early warning value is obtained; if the electric quantity value of the vehicle at the current moment is smaller than the electric quantity value of the vehicle at the previous moment and larger than an electric quantity threshold value, obtaining a target actual driving mileage and a target predicted driving mileage of the electric quantity value of the vehicle when the electric quantity value of the vehicle at the previous moment is reduced to the electric quantity value of the vehicle at the current moment; if the size relation between the target actual driving mileage and the target predicted driving mileage does not meet the preset energy consumption condition, a preset power generation strategy is adjusted to obtain a target power generation strategy; and controlling the range extending system to start power generation in advance based on the target power generation strategy. According to the technical scheme, the power generation time of the range extending system can be dynamically adjusted to achieve advanced power generation, the NVH performance of the vehicle can be improved, and noise can be reduced.

Description

Technical Field

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

[0002] At present, after selecting the corresponding vehicle driving mode, the current hybrid vehicles will fix the power conservation capacity of the range extension system. However, due to NVH and other reasons, the power generation capacity is low at low speeds. Therefore, when the vehicle is at low speed and high power, the power conservation capacity of the vehicle will decrease, which will bring inconvenience to users. Summary of the invention

[0003] In view of the above problems, the present application provides a control method, device, vehicle and storage medium for a vehicle range extender system, which can not only dynamically adjust the power generation time of the range extender system to achieve advance power generation and thereby maintain the vehicle's power value above the power threshold, but also improve the vehicle's NVH performance and reduce noise.

[0004] According to one aspect of an embodiment of the present application, a control method for a vehicle range-extending system is provided, the method comprising: in response to a target driving mode of a current vehicle, obtaining a power value of the vehicle and a preset power generation strategy corresponding to the target driving mode; wherein the power value of the vehicle comprises a power value of the vehicle at a previous moment and a power value of the vehicle at a current moment, the preset power generation strategy comprises a strategy for the range-extending system to forcibly start power generation when the power value of the vehicle is equal to a power threshold and a strategy for the range-extending system to start power generation in advance when the power value of the vehicle is less than a power warning value and greater than the power threshold; when the power value of the vehicle at the previous moment is equal to a power threshold, the preset power generation strategy comprises a strategy for the range-extending system to start power generation in advance when the power value of the vehicle is less than a power warning value and greater than the power threshold; And when the battery value of the vehicle at the current moment is between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, then obtain the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment; if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, adjust the preset power generation strategy to obtain the target power generation strategy; based on the target power generation strategy, control the extended-range system to start power generation in advance.

[0005] In an optional manner, the method for obtaining the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle drops from the previous moment to the current moment, includes: determining the battery value of the vehicle at the previous moment as the battery warning value, and determining the battery value of the vehicle at the current moment as the preset battery value; wherein the preset battery value is the average of the battery threshold value and the battery warning value; obtaining the total actual mileage and total predicted mileage of the vehicle when the battery value drops from the battery warning value to the preset battery value; determining the total actual mileage of the vehicle when the battery value drops from the battery warning value to the preset battery value as the target actual mileage, and determining the total predicted mileage of the vehicle when the battery value drops from the battery warning value to the preset battery value as the target predicted mileage.

[0006] In an optional manner, the method for obtaining the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment, further includes: if the battery value of the vehicle at the previous moment is less than the preset battery value and the battery value of the vehicle at the current moment is greater than the battery threshold, determining a first battery difference between the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment; if the first battery difference is equal to the first preset battery difference, obtaining the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment; wherein the first preset battery difference is less than the difference between the preset battery value and the battery threshold, and is less than the difference between the battery warning value and the preset battery value.

[0007] In an optional manner, if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, the preset power generation strategy is adjusted to obtain the step method of the target power generation strategy, including: if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, the mileage difference between the target actual mileage and the target predicted mileage is obtained; based on the size of the mileage difference, a first target power generation level is determined, the first target power generation level is one of a plurality of candidate power generation levels with different power generation powers; wherein, the greater the mileage difference, the greater the power generation power of the first target power generation level; based on the first target power generation level, the power generation level of the extended-range system in the preset power generation strategy is adjusted to obtain the target power generation strategy.

[0008] In an optional embodiment, the method also includes: if the battery value of the vehicle at the current moment is less than the battery threshold, determining a second battery difference between the battery value of the vehicle at the current moment and the battery threshold; if the second battery difference is greater than a second preset battery difference, determining a second target power generation level based on the first target power generation level; wherein the power generation power of the second target power generation level is greater than the first target power generation level; and adjusting the power generation level of the extended-range system in the preset power generation strategy based on the second target power generation level to obtain a target power generation strategy.

[0009] In an optional manner, the method for obtaining the target actual mileage and target predicted mileage corresponding to the vehicle in the process of the vehicle's power value being consumed from the power warning value to the power threshold value also includes: obtaining the vehicle's total cruising range and the vehicle's power battery health information; determining the target predicted mileage based on the vehicle's total cruising range, the vehicle's power battery health information, and a first power difference between the vehicle's power value at the previous moment and the vehicle's power value at the current moment.

[0010] In an optional manner, the method further includes: if the battery value of the vehicle at the current moment is greater than or equal to the battery value of the vehicle at the previous moment; or if the relationship between the target actual mileage and the target predicted mileage meets a preset energy consumption condition, then controlling the range extender system to stop generating electricity.

[0011] According to another aspect of an embodiment of the present application, the device includes: a first acquisition module, which is used to obtain the power value of the vehicle and the preset power generation strategy corresponding to the target driving mode in response to the target driving mode of the current vehicle; wherein the power value of the vehicle includes the power value of the vehicle at a previous moment and the power value of the vehicle at a current moment, and the preset power generation strategy includes a strategy for the range-extended system to forcibly start power generation when the power value of the vehicle is equal to a power threshold and a strategy for the range-extended system to start power generation in advance when the power value of the vehicle is less than the power warning value and greater than the power threshold; a second acquisition module, which is used to obtain the power value of the vehicle at a previous moment and the power value of the vehicle at a current moment. When the battery value of the vehicle at each moment is between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, the target actual mileage and target predicted mileage are obtained when the battery value of the vehicle drops from the battery value of the vehicle at the previous moment to the battery value of the vehicle at the current moment; an adjustment module is used to adjust the preset power generation strategy to obtain a target power generation strategy if the relationship between the target actual mileage and the target predicted mileage does not meet a preset energy consumption condition; and a control module is used to control the range extender system to start power generation in advance based on the target power generation strategy.

[0012] According to another aspect of an embodiment of the present application, a vehicle is provided, comprising: a controller; and a memory for storing one or more programs, wherein when the one or more programs are executed by the controller, the controller implements the above-mentioned control method of the vehicle range extender system.

[0013] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program includes at least one executable instruction. When the executable instruction is executed on a control device / vehicle of a vehicle range extender system, the control device / vehicle of the vehicle range extender system executes the control method of the vehicle range extender system as described above.

[0014] In the present application, when the driver drives the vehicle and triggers the corresponding target driving mode, the vehicle's on-board terminal responds to the target driving mode triggered by the driver, and obtains the vehicle's power value and the preset power generation strategy corresponding to the target driving mode. If the power value after the vehicle is started is greater than the power warning value, the target actual mileage and target predicted mileage of the vehicle when the power value of the vehicle at the previous moment (preferably the power warning value) drops to the power value of the vehicle at the current moment can be obtained when the power value of the vehicle at the current moment is equal to the power preset value. If the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption conditions, the preset power generation strategy is adjusted to obtain the target power generation strategy, and the range extender system is controlled to start power generation in advance based on the target power generation strategy.

[0015] If the battery value after the vehicle is started is less than the battery warning value and greater than the battery threshold, the target actual mileage and target predicted mileage of the vehicle can be obtained when the battery value of the vehicle at the previous moment (preferably the battery value after starting) drops to the battery value of the vehicle at the current moment; if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption conditions, the preset power generation strategy is adjusted to obtain the target power generation strategy, and the range extender system is controlled to start power generation in advance based on the target power generation strategy.

[0016] In summary, the control method of the vehicle range extender system of the present application can not only dynamically adjust the power generation time of the range extender system when the vehicle's battery level decreases to achieve advance power generation and thereby maintain the vehicle's battery level above the battery threshold, but can also improve the vehicle's NVH performance and reduce noise.

[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 A schematic flow chart of steps S210 - S240 of a method for controlling a vehicle range extender system provided in an embodiment of the present application is shown.

[0020] Figure 2 A schematic flow chart of steps S221 - S223 of a method for controlling a vehicle range extender system provided in an embodiment of the present application is shown.

[0021] Figure 3 A schematic flow chart of steps S224-S225 of a method for controlling a vehicle range extender system provided in an embodiment of the present application is shown.

[0022] Figure 4 A schematic block diagram of the process of steps S231 - S233 of a method for controlling a vehicle range extender system provided in an embodiment of the present application is shown.

[0023] Figure 5 A schematic flow chart of steps S231 ′-S233 ′ of a method for controlling a vehicle range extender system provided in an embodiment of the present application is shown.

[0024] Figure 6 A schematic structural diagram of a control device for a vehicle range extender system provided in an embodiment of the present application is shown.

[0025] Figure 7 A schematic diagram of the structure of an embodiment of a computing device of a vehicle provided by the present application is shown. DETAILED DESCRIPTION

[0026] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0029] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0030] Generally speaking, extended-range vehicles include a fuel priority mode and a pure electric priority mode. Both the fuel priority mode and the pure electric priority mode will set a power threshold. When the vehicle's power value is lower than the power threshold, the vehicle's extended-range system will be forced to start and then start generating electricity to maintain the vehicle's power value near the power threshold.

[0031] However, when the vehicle's battery level drops to near the battery threshold, if it happens to encounter some high-power consumption scenarios (for example, the vehicle is continuously climbing a mountain, the vehicle is overloaded, or the vehicle's accessories are running at high power), the vehicle's battery level will drop rapidly, causing the vehicle to be unable to maintain the battery level near the battery threshold.

[0032] Based on this, the embodiment of the present application provides a control method of a vehicle range extender system, a control device 300, a vehicle and a computer-readable storage medium to solve the above problems. Specifically: Please refer to Figure 1 , Figure 1 The schematic flow diagram of steps S210-S240 of a control method for a vehicle range extender system provided in an embodiment of the present application is shown. The method is executed by a vehicle terminal, and includes steps S210 to S240, which are described in detail as follows:

[0033] S210: In response to the target driving mode of the current vehicle, obtaining the power value of the vehicle and the preset power generation strategy corresponding to the target driving mode; wherein the power value of the vehicle includes the power value of the vehicle at a previous moment and the power value of the vehicle at a current moment, and the preset power generation strategy includes a strategy of forcibly starting power generation of the range-extended system when the power value of the vehicle is equal to a power threshold, a strategy of starting power generation in advance when the power value of the range-extended system is less than a power warning value and greater than a power threshold, and a power preset value between the power warning value and the power threshold;

[0034] It should be understood that the driving mode of the vehicle includes at least a pure electric priority driving mode and a fuel priority driving mode, and both the pure electric priority driving mode and the fuel priority driving mode include their own corresponding preset power generation strategies. However, both the pure electric priority driving mode and the fuel priority driving mode are provided with a power threshold, so that when the vehicle is in the corresponding pure electric priority driving mode or the fuel priority driving mode, if the vehicle power value is equal to the power threshold, the range extension system starts to generate power. Among them, the target driving mode is one of the pure electric priority driving mode and the fuel priority driving mode.

[0035] Furthermore, obtaining the battery value of the vehicle is to obtain the battery value of the vehicle in real time, that is, to obtain the battery value of the vehicle in real time during the period from when the vehicle is started to when it is shut down.

[0036] In addition, the difference between the power warning value and the power threshold is that: when the vehicle's power value is greater than the power warning value, the range extender system generally does not start to generate electricity; when the vehicle's power value is greater than the power threshold and less than or equal to the power warning value, the range extender system selectively starts to generate electricity, that is, the range extender system is selected to start power generation or remain in a stopped power generation state according to the vehicle's operating conditions; when the vehicle's power value is equal to or less than the power threshold, the range extender system is forced to start power generation.

[0037] In an exemplary embodiment of the present application, the power warning value can be set according to the user's habits.

[0038] For example, the power warning value is equal to the power threshold plus 10%-30% of the vehicle's full charge.

[0039] Optionally, when the target driving mode is the pure electric priority mode, the power threshold is 20% and the power warning value is 30%. When the target driving mode is the fuel priority mode, the power threshold is 70% and the power warning value is 80%.

[0040] Step S220: When the battery value of the vehicle at a previous moment and the battery value of the vehicle at the current moment are both between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, then obtain the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment; wherein the preset battery value is between the battery warning value and the battery threshold.

[0041] It should be noted that after obtaining the vehicle's power value, it is necessary to monitor the vehicle's power value in real time, and then judge the relationship between the vehicle's power value at the current moment and the power threshold and power warning value, so as to obtain the target actual mileage and the corresponding target predicted mileage of the vehicle's power value during the decreasing process at an appropriate time point; and then choose whether to adjust the preset power generation strategy.

[0042] In an exemplary embodiment of the present application, the steps of obtaining a target actual mileage and a target predicted mileage of a vehicle when the vehicle's power value at a previous moment drops to the vehicle's power value at a current moment include: the target actual mileage of the vehicle in the process of power value consumption from a power warning value to a power threshold value can be obtained through the vehicle's odometer.

[0043] In an exemplary embodiment of the present application, the steps of obtaining a target actual mileage and a target predicted mileage when the battery value of the vehicle at a previous moment drops to the battery value of the vehicle at a current moment include: first obtaining the vehicle's total cruising range and the vehicle's power battery health information; and then determining the target predicted mileage based on the vehicle's total cruising range, the vehicle's power battery health information, and a first battery difference between the vehicle's battery value at a previous moment and the vehicle's battery value at a current moment.

[0044] For example, if the total mileage of the vehicle is Xkm based on the vehicle endurance test, and the power battery health status (SOH) Y is determined based on the vehicle's power battery health information, the target predicted mileage that can be traveled from the vehicle's power value of 30% at the previous moment to the vehicle's power value of 25% at the current moment can be obtained as 0.05X×Ykm.

[0045] In an exemplary embodiment of the present application, Figure 2 The following is a schematic flow chart of steps S221-S223 of a control method for a vehicle range extender system provided in an embodiment of the present application. Figure 2 As shown, when the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment are both between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, the method for obtaining the target actual mileage and target predicted mileage when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment includes steps S221 to S223, which are described in detail as follows:

[0046] Step S221: If the current battery level of the vehicle is greater than the preset battery level, the previous battery level of the vehicle is determined as the battery warning value, and the current battery level of the vehicle is determined as the preset battery level; wherein the preset battery level is the average of the battery threshold and the battery warning value.

[0047] For example, if the power threshold is 20% of the total power of the vehicle, and the power warning value is 30% of the total power of the vehicle, then the power preset value is 25% of the total power of the vehicle.

[0048] Step S222: Obtain the total actual mileage and total predicted mileage of the vehicle when the battery value drops from the battery warning value to the preset battery value.

[0049] Step S223: The total actual mileage when the vehicle's power value drops from the power warning value to the power preset value is determined as the target actual mileage, and the total predicted mileage when the vehicle's power value drops from the power warning value to the power preset value is determined as the target predicted mileage.

[0050] It should be understood that by setting a preset power value, and the preset power value is the average of the power threshold value and the power warning value, the corresponding total actual mileage and total predicted mileage are obtained when the power value of the vehicle at the current moment drops from the power warning value to the preset power value, and used as the target actual mileage and target predicted mileage. On the one hand, it is possible to determine as early as possible whether the size relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions, so as to start power generation in advance as early as possible; on the other hand, when the power value of the vehicle at the current moment drops from the power warning value to the preset power value, the corresponding total actual mileage and total predicted mileage are obtained. Compared with the power value when the power value of the vehicle at the current moment drops less than the difference between the power warning value and the preset power value, the target actual mileage and target predicted mileage are collected, and their mileage data are more referenceable.

[0051] It should be noted that, after the total actual mileage of the vehicle's power value dropping from the power warning value to the power preset value is determined as the target actual mileage; and the total predicted mileage of the vehicle's power value dropping from the power warning value to the power preset value is determined as the target predicted mileage, the control method of the vehicle range extender system also includes step S230.

[0052] Step S230: If the relationship between the target actual mileage and the target predicted mileage does not satisfy the preset energy consumption condition, the preset power generation strategy is adjusted to obtain the target power generation strategy.

[0053] In an exemplary embodiment of the present application, the preset energy consumption condition is that the target predicted mileage minus the target actual mileage is greater than or equal to the product of the target predicted mileage and the calibration value.

[0054] Optionally, the calibration value is 1 / 4. The calibration value may be selected according to vehicle condition information of the vehicle or road condition information of the vehicle.

[0055] It should be understood that when the calibration value is 1 / 4, if 1 / 4×target predicted mileage ≤target predicted mileage-target actual mileage, it is determined that the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption conditions, and it means that the vehicle's power consumption exceeds expectations.

[0056] In an exemplary embodiment of the present application, Figure 4The following is a schematic flow chart of steps S231-S233 of a control method for a vehicle range extender system provided in an embodiment of the present application. Figure 4 As shown, if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, the preset power generation strategy is adjusted to obtain the target power generation strategy. The method includes steps S231 to S233, which are described in detail as follows:

[0057] Step S231: If the relationship between the target actual mileage and the target predicted mileage does not satisfy the preset energy consumption condition, the mileage difference between the target actual mileage and the target predicted mileage is obtained.

[0058] It should be understood that the mileage difference between the target actual mileage and the target predicted mileage is a value: the value of the target predicted mileage minus the target actual mileage.

[0059] Step S232: Determine a first target power generation level based on the size of the mileage difference, where the first target power generation level is one of a plurality of candidate power generation levels with different power generation powers; wherein, the greater the mileage difference, the greater the power generation power of the first target power generation level.

[0060] It should be understood that the multiple candidate power generation levels with different power generation may include at least: a low power generation level, a medium power generation level and a high power generation level, wherein the power generation of the low power generation level is less than that of the medium power generation level, and the power generation of the medium power generation level is less than that of the high power generation level.

[0061] For example, if 1 / 4×target predicted mileage ≤ target predicted mileage - target actual mileage, it means that the vehicle's power consumption exceeds expectations. If the vehicle continues to travel according to this trend and generates electricity according to the original power generation strategy, the vehicle's power value cannot be maintained at the power threshold, so it is necessary to start the range extender system in advance to charge the power battery. At this time, the first target power generation level can be determined as a low power generation level.

[0062] For example, if 2 / 5×target predicted mileage ≤ target predicted mileage - target actual mileage, since 2 / 5×target actual mileage is greater than 1 / 4×target predicted mileage, it means that the vehicle's power consumption is far greater than expected. If the vehicle continues to travel according to this trend and generates power according to the original power generation strategy, or even if the range extender system is started in advance to generate power at the first target power generation level of a low power generation level, the vehicle's power value cannot be maintained at the power threshold. Therefore, it is necessary to start the range extender system in advance to charge the power battery and determine the first target power generation level to be a medium power generation level.

[0063] Step S233: adjusting the power generation level of the range extender system in the preset power generation strategy based on the first target power generation level to obtain a target power generation strategy.

[0064] It should be understood that the first target power generation level is determined by the mileage difference between the target actual mileage and the target predicted mileage, that is, the greater the mileage difference, the greater the power generation power of the first target power generation level. After the extended-range system is started in advance, the power generation and power conservation needs can be met, and the noise and NVH performance of the extended-range system can be controlled at a better level.

[0065] S240: Based on the target power generation strategy, the range-extended system is controlled to start power generation in advance, so that when the vehicle's power value drops from the power warning value to the power preset value, if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption conditions, the range-extended system is controlled to start power generation in advance to maintain the vehicle's power value above the power threshold as much as possible, thereby alleviating the user's anxiety and improving the user's driving experience.

[0066] It should be noted that, in the process of determining that the vehicle's power value drops from the power warning value to the power preset value, regardless of whether the relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions, and regardless of whether the extended-range system is controlled to start power generation in advance, it is necessary to determine that in the process of the vehicle's power value dropping from the power preset value to the power threshold, whether the relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions, and adjust the preset power generation strategy accordingly to obtain the target power generation strategy.

[0067] In an exemplary embodiment of the present application, Figure 3 A flow diagram of steps S224-S225 of a control method for a vehicle range-extending system provided in an embodiment of the present application is shown. When the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment are both between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, the method of obtaining the target actual mileage and target predicted mileage when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment also includes steps S224 to S225, which are described in detail as follows:

[0068] Step S224: If the battery level of the vehicle at the previous moment is less than the preset battery level and the battery level of the vehicle at the current moment is greater than the battery threshold, a first battery level difference between the battery level of the vehicle at the previous moment and the battery level of the vehicle at the current moment is determined.

[0069] Step S225: If the first power difference is equal to the first preset power difference, the target actual mileage and target predicted mileage are obtained when the power value of the vehicle drops from the power value of the vehicle at the previous moment to the power value of the vehicle at the current moment.

[0070] It should be understood that, as the vehicle's power value decreases after being less than the preset power value, the power threshold for the range-extended system to force the start of power generation is getting closer and closer. Therefore, when the vehicle's power value is consumed within the preset power value to the power threshold, the target actual mileage and target predicted mileage are obtained once every first preset power difference between the vehicle's power value at the current moment and the vehicle's power value at the previous moment, so that it can be understood in a shorter time whether the size relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions, so as to control the range-extended system to start power generation in advance, or continue to maintain the power generation state of the range-extended system. Among them, the first preset power difference is less than the difference between the preset power value and the power threshold, and less than the difference between the power warning value and the preset power value.

[0071] For example, if the power threshold is 20% of the total vehicle power, the power warning value is 30% of the total vehicle power, and the power preset value is 25% of the total vehicle power, the first preset power difference may be 1% of the total vehicle power.

[0072] In an exemplary embodiment of the present application, Figure 5 The flowchart of steps S231'-S233' of a vehicle range extender system control method provided by an embodiment of the present application is shown. Figure 5 As shown, the control method of the vehicle range extension system also includes steps S231' to S233', which are described in detail as follows:

[0073] Step S231 ′: if the current battery level of the vehicle is less than the battery threshold, a second battery level difference between the current battery level of the vehicle and the battery threshold is determined.

[0074] It should be understood that after the vehicle's power value is consumed to equal the power threshold, it is also necessary to determine whether the vehicle's power value can maintain the vehicle's power value equal to or greater than the power threshold after the range-extending system is started, thereby avoiding the situation where the power consumption is far greater than the power generation of the range-extending system. Therefore, it is necessary to determine the second power difference between the vehicle's power value at the current moment and the power threshold to determine whether the vehicle's power value can maintain the vehicle's power value equal to or greater than the power threshold after the range-extending system is started.

[0075] Step S232': if the second power difference is greater than the second preset power difference, determine a second target power generation level based on the first target power generation level; wherein the power generation power of the second target power generation level is greater than the first target power generation level.

[0076] For example, the second preset power difference is 5% of the total power of the vehicle.

[0077] It should be understood that when it is determined that the second power difference is greater than the second preset power difference, it means that the vehicle's power consumption is far greater than the power generation of the extended-range system, and the vehicle's power value cannot be maintained equal to or greater than the power threshold. Therefore, it is necessary to increase the power generation level based on the first target power generation level to obtain the second target power generation level.

[0078] For example, if the first target power generation level is a low power generation level, the second target power generation level is at least a medium power generation level, and if the first target power generation level is a medium power generation level, the second target power generation level is at least a high power generation level. In addition, if the vehicle power value is greater than the power threshold and the range extender system has stopped generating power, the second target power generation level is at least a low power generation level.

[0079] Step S233 ′: adjusting the power generation level of the range extender system in the preset power generation strategy based on the second target power generation level to obtain the target power generation strategy.

[0080] It should be understood that if advance power generation has been performed when the vehicle's power value is greater than the power threshold, but the vehicle's power value cannot be maintained equal to or greater than the power threshold, the power generation level of the extended-range system in the preset power generation strategy can be adjusted based on the second target power generation level, thereby increasing the power generation level to maintain the vehicle's power value equal to or greater than the power threshold.

[0081] In an exemplary embodiment of the present application, the control method of the vehicle range extender system also includes: if the current battery value of the vehicle is greater than or equal to the battery value of the vehicle at the previous moment; or if the relationship between the target actual mileage and the target predicted mileage meets a preset energy consumption condition, then controlling the range extender system to stop generating electricity.

[0082] For example, if the current vehicle power value differs from the previous vehicle power value by 1% of the total vehicle power, then when the current vehicle power value minus the previous vehicle power value is greater than or equal to 0, the range extender system can be controlled to stop generating electricity; or when the current vehicle power value differs from the previous vehicle power value by 1% of the total vehicle power, when the target actual mileage minus the target predicted mileage is greater than or equal to 0, the range extender system can be controlled to stop generating electricity.

[0083] In the present application, when the driver drives the vehicle and triggers the corresponding target driving mode, the vehicle's on-board terminal responds to the target driving mode triggered by the driver, and obtains the vehicle's power value and the preset power generation strategy corresponding to the target driving mode. If the power value after the vehicle is started is greater than the power warning value, when the current moment of the vehicle's power value is equal to the power preset value, the target actual mileage and target predicted mileage of the vehicle's power value when the vehicle's power value (preferably the power warning value) at the previous moment drops to the power preset value can be obtained. If the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, the range-extending system is controlled to start power generation in advance at the first target power generation level. In this process, the vehicle's power value at the current moment can be greater than or equal to the vehicle's power value at the previous moment; or, if the relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption condition, the range-extending system is controlled to stop power generation.

[0084] If the battery value after the vehicle is started is less than the battery warning value and greater than the preset value, then when the battery value of the vehicle at the current moment is equal to the preset value, the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment (preferably the battery value after starting) drops to the preset value can be obtained. If the size relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, the range-extending system is controlled to start power generation in advance at the first target power generation level. In this process, the battery value of the vehicle at the current moment is greater than or equal to the battery value of the vehicle at the previous moment; or, if the size relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption condition, the range-extending system is controlled to stop power generation.

[0085] If the battery value of the vehicle continues to decrease after being equal to the preset battery value; or the battery value of the vehicle after starting is equal to the preset battery value and continues to decrease, then each time the difference between the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment is the first battery difference, the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment decreases to the battery value of the vehicle at the current moment can be obtained, until the battery value of the vehicle at the current moment is equal to the battery threshold. Accordingly, if the relationship between the target actual mileage and the target predicted mileage does not meet the preset energy consumption condition, the range-extending system is controlled to start power generation in advance at the first target power generation level. In this process, the battery value of the vehicle at the current moment can be greater than or equal to the battery value of the vehicle at the previous moment; or, if the relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption condition, the range-extending system is controlled to stop power generation.

[0086] If the vehicle's power value is equal to the preset power value and continues to decrease, and the decrease exceeds the second power difference, the power generation level of the range-extending system in the preset power generation strategy is adjusted based on the second target power generation level to increase the power generation level of the range-extending system. In this process, if the vehicle's power value at the current moment is greater than the vehicle's power value at the previous moment, the range-extending system is controlled to stop generating power.

[0087] In summary, the control method of the vehicle range extender system of the present application can not only dynamically adjust the power generation time of the range extender system when the vehicle's battery level decreases to achieve advance power generation and thereby maintain the vehicle's battery level above the battery threshold, but can also improve the vehicle's NVH performance and reduce noise.

[0088] Figure 6 FIG. 3 is a schematic diagram showing a structure of a control device 300 of a vehicle range-extending system provided in an embodiment of the present application. Figure 6 As shown, in this embodiment, a control device 300 of a vehicle range extender system is also provided, which is used to execute the control method of the vehicle range extender system in the above embodiment.

[0089] Furthermore, the control device 300 of the vehicle range extender system includes a first acquisition module 310, which is used to obtain the power value of the vehicle and the preset power generation strategy corresponding to the target driving mode in response to the target driving mode of the current vehicle; wherein the power value of the vehicle includes the power value of the vehicle at a previous moment and the power value of the vehicle at a current moment, and the preset power generation strategy includes a strategy in which the range extender system forcibly starts power generation when the power value of the vehicle is equal to a power threshold and a strategy in which the range extender system can start power generation in advance when the power value of the vehicle is less than the power warning value and greater than the power threshold.

[0090] Furthermore, the control device 300 of the vehicle range extender system also includes a second acquisition module 320, which is used to obtain the target actual mileage and target predicted mileage of the vehicle when the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment are both between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold.

[0091] Furthermore, the control device 300 of the vehicle range extender system also includes an adjustment module 330, which is used to adjust the preset power generation strategy to obtain a target power generation strategy if the relationship between the target actual mileage and the target predicted mileage does not meet a preset energy consumption condition.

[0092] Furthermore, the control device 300 of the vehicle range extender system further includes a control module 340, and the control module 340 is used to control the range extender system to start power generation in advance based on the target power generation strategy.

[0093] It should be noted that the control device 300 of the vehicle range extender system provided in the above embodiment and the control method of the vehicle range extender system provided in the above embodiment belong to the same concept, and the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here.

[0094] Figure 7 A schematic diagram of the structure of an embodiment of a computing device of a vehicle of the present application is shown, which shows a schematic diagram of the structure of a computer system of a computing device of a vehicle suitable for implementing an embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the computing device of the vehicle.

[0095] See also Figure 7 As shown, the vehicle includes a computing device, which includes: a controller; a memory for storing one or more programs, and when the one or more programs are executed by the controller, the control method of the vehicle range extender system is executed.

[0096] Please continue reading Figure 7 As shown, the computer system of the computing device 500 includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (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 through a bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0097] 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.

[0098] 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.

[0099] Another aspect of the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the above vehicle range-extending system control method when the computer program is executed by a processor. The computer-readable storage medium may be included in the computing device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0100] Another aspect of the present application further provides a computer program product or a computer program, which includes at least one executable instruction, and when the executable instruction is run on the control device 300 / vehicle of the vehicle range extender system, the control device 300 / vehicle of the vehicle range extender system executes the above control method of the vehicle range extender system.

[0101] It should be noted that the computer-readable medium 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 (Erasable Programmable Read On ly Memory, EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc 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.

[0102] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the apparatus, methods and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0103] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0104] According to one aspect of the embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion to a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. Input / output (I / O) interface is also connected to the bus.

[0105] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that a computer program read therefrom is installed into the storage part as needed.

[0106] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0107] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0108] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0109] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0110] 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 system, characterized in that: The method comprises: In response to a target driving mode of the current vehicle, an electric quantity value of the vehicle and a preset power generation strategy corresponding to the target driving mode are obtained; wherein the electric quantity value of the vehicle includes an electric quantity value of the vehicle at a previous moment and an electric quantity value of the vehicle at a current moment, and the preset power generation strategy includes a strategy in which the range-extended system forcibly starts power generation when the electric quantity value of the vehicle is equal to an electric quantity threshold value and a strategy in which the range-extended system can start power generation in advance when the electric quantity value of the vehicle is less than an electric quantity warning value and greater than the electric quantity threshold value; When the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment are both between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, then obtaining a target actual mileage and a target predicted mileage when the battery value of the vehicle drops from the battery value of the vehicle at the previous moment to the battery value of the vehicle at the current moment; If the relationship between the target actual mileage and the target predicted mileage does not satisfy the preset energy consumption condition, adjusting the preset power generation strategy to obtain the target power generation strategy; The range extender system is controlled to start power generation in advance based on the target power generation strategy.

2. The method according to claim 1, characterized in that The method of obtaining the target actual mileage and the target predicted mileage when the power value of the vehicle at the previous moment decreases to the power value of the vehicle at the current moment includes: If the current vehicle power value is greater than the preset power value, the previous vehicle power value is determined as the power warning value, and the current vehicle power value is determined as the preset power value; wherein the preset power value is the average of the power threshold and the power warning value; Obtaining a total actual mileage and a total predicted mileage of the vehicle from when the power value of the vehicle drops from the power warning value to the power preset value; The total actual mileage of the vehicle's power value from the power warning value to the power preset value is determined as the target actual mileage, and the total predicted mileage of the vehicle's power value from the power warning value to the power preset value is determined as the target predicted mileage.

3. The method according to claim 1, characterized in that The method for obtaining the target actual mileage and target predicted mileage when the vehicle's power value at the previous moment drops to the vehicle's power value at the current moment also includes: If the battery value of the vehicle at the previous moment is less than the preset battery value and the battery value of the vehicle at the current moment is greater than the battery threshold, determining a first battery difference between the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment; If the first power difference is equal to the first preset power difference, obtaining a target actual mileage and a target predicted mileage when the power value of the vehicle at the previous moment drops to the power value of the vehicle at the current moment; The first preset power difference is smaller than the difference between the preset power value and the power threshold, and smaller than the difference between the power warning value and the preset power value.

4. The method according to claim 1, characterized in that If the relationship between the target actual mileage and the target predicted mileage does not satisfy the preset energy consumption condition, the preset power generation strategy is adjusted to obtain the target power generation strategy, including: If the magnitude relationship between the target actual mileage and the target predicted mileage does not satisfy the preset energy consumption condition, then obtaining the mileage difference between the target actual mileage and the target predicted mileage; Determine a first target power generation level based on the size of the mileage difference, the first target power generation level being one of a plurality of candidate power generation levels with different power generation powers; wherein the greater the mileage difference, the greater the power generation power of the first target power generation level; The power generation level of the range extender system in the preset power generation strategy is adjusted based on the first target power generation level to obtain a target power generation strategy.

5. The method according to claim 4, characterized in that The method further comprises: If the current power value of the vehicle is less than the power threshold, determining a second power difference between the current power value of the vehicle and the power threshold; If the second power difference is greater than a second preset power difference, determining a second target power generation level based on the first target power generation level; wherein the power generation power of the second target power generation level is greater than the first target power generation level; The power generation level of the range extender system in the preset power generation strategy is adjusted based on the second target power generation level to obtain a target power generation strategy.

6. The method according to claim 1, characterized in that The method further comprises: If the current vehicle power value is greater than or equal to the previous vehicle power value; or if the target actual mileage and the target predicted mileage meet the preset energy consumption condition, the range extender system is controlled to stop generating electricity.

7. The method according to claim 1, characterized in that The method for obtaining the target actual mileage and target predicted mileage corresponding to the vehicle during the process in which the power value of the vehicle is consumed from the power warning value to the power threshold value also includes: Obtaining the total cruising range of the vehicle and the health information of the power battery of the vehicle; The target predicted mileage is determined based on the total cruising range of the vehicle, the health information of the vehicle's power battery, and a first power difference between the power value of the vehicle at the previous moment and the power value of the vehicle at the current moment.

8. A control device for a vehicle range-extending system, characterized in that: The device comprises: A first acquisition module is used to obtain the power value of the vehicle and the preset power generation strategy corresponding to the target driving mode in response to the target driving mode of the current vehicle; wherein the power value of the vehicle includes the power value of the vehicle at a previous moment and the power value of the vehicle at a current moment, and the preset power generation strategy includes a strategy of the range-extended system forcibly starting power generation when the power value of the vehicle is equal to a power threshold and a strategy of the range-extended system starting power generation in advance when the power value of the vehicle is less than the power warning value and greater than the power threshold; A second acquisition module is used for, when the battery value of the vehicle at the previous moment and the battery value of the vehicle at the current moment are both between the battery warning value and the battery threshold, if the battery value of the vehicle at the current moment is less than the battery value of the vehicle at the previous moment and greater than the battery threshold, obtaining a target actual mileage and a target predicted mileage when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment; an adjusting module, configured to adjust the preset power generation strategy to obtain a target power generation strategy if the relationship between the target actual mileage and the target predicted mileage does not satisfy a preset energy consumption condition; A control module is used to control the range-extended system to start power generation in advance based on the target power generation strategy.

9. A vehicle, characterized in that: include: Controller; A memory is used to store one or more programs. When the one or more programs are executed by the controller, the controller implements the control method of the vehicle range extender system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which includes at least one executable instruction. When the executable instruction is executed on the control device / vehicle of the vehicle range extender system, the control device / vehicle of the vehicle range extender system executes the control method of the vehicle range extender system as described in any one of claims 1 to 7.

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