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

Abstract

The present application discloses a control method, device, vehicle, and storage medium for a vehicle range extender system. The control method for the vehicle range extender system includes: when the vehicle's battery value at the current moment and the vehicle's battery value at the current moment are both between the battery warning value and the battery threshold, if the vehicle's battery value at the current moment is less than the vehicle's battery value at the previous moment and greater than the battery threshold, then obtaining the target actual mileage and target predicted mileage of the vehicle when the vehicle's battery value at the previous moment drops to the vehicle's battery value at the current moment; if the relationship between the target actual mileage and the target predicted mileage does not meet a preset energy consumption condition, then adjusting the preset power generation strategy to obtain a target power generation strategy; and controlling the range extender system to start power generation in advance based on the target power generation strategy. The technical solution of the present application can not only dynamically adjust the power generation time of the range extender system to achieve early power generation, but also improve the NVH performance of the vehicle and reduce noise.

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] Currently, hybrid vehicles set a fixed range-extending system charge limit when the corresponding driving mode is selected. However, due to NVH and other factors, the power generation capacity is lower at low speeds. As a result, the vehicle's charge retention capacity is reduced at low speeds and high power, causing 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 early 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 method for controlling a vehicle range extender system is provided, the method comprising: in response to a target driving mode of a current vehicle, obtaining a charge value of the vehicle and a preset power generation strategy corresponding to the target driving mode; wherein the charge value of the vehicle comprises a charge value of the vehicle at a previous moment and a charge value of the vehicle at a current moment, the preset power generation strategy comprising a strategy for forcibly starting power generation by the range extender system when the charge value of the vehicle is equal to a charge threshold value and a strategy for starting power generation by the range extender system in advance when the charge value of the vehicle is less than a charge warning value and greater than the charge threshold value; when the charge value of the vehicle at the previous moment is equal to a charge threshold value, the range extender system is configured to start power generation in advance. 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 range extender 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 vehicle's battery value at the previous moment drops to the vehicle's battery value at the current moment includes: determining the vehicle's battery value at the previous moment as the battery warning value, and determining the vehicle's battery value at the current moment as the preset battery value; wherein the preset battery value is the average of the battery threshold 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 embodiment, 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 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 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 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 mileage and the vehicle's power battery health information; determining the target predicted mileage based on the vehicle's total cruising mileage, 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 embodiment, the method further includes: if the current vehicle power value is greater than or equal to the vehicle power value 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 for acquiring, in response to a target driving mode of the current vehicle, 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 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 forcibly starting power generation when the power value of the range-extending system is equal to a power threshold and a strategy for starting power generation in advance when the power value of the range-extending system is less than a power warning value and greater than the power threshold; a second acquisition module for acquiring, when 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, a target actual mileage and a target predicted mileage are obtained when the battery value of the vehicle at the previous moment drops to the battery value of the vehicle at the current moment; an adjustment module is 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 meet a preset energy consumption condition; and a control module is configured 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, which, when executed by the controller, enables the controller to implement 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, wherein the storage medium stores a computer program, wherein 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 condition, 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 early power generation, thereby maintaining the vehicle's battery level above the battery threshold, but also improve the vehicle's NVH performance and reduce noise.

[0017] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, they 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 embodiments 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 drawings. In the 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 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.

[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 structural diagram of an embodiment of a vehicle computing device provided by the present application is shown. DETAILED DESCRIPTION

[0026] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, 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 for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0029] In this application, "plurality" refers to two or more. "And / or" describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, 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, resulting in the vehicle being unable to maintain the battery level near the battery threshold.

[0032] Based on this, the embodiments of the present application provide a control method for 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 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. 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 a current target driving mode of the vehicle, obtaining a vehicle power level and a preset power generation strategy corresponding to the target driving mode; wherein the vehicle power level includes a previous moment's power level and a current moment's power level, and the preset power generation strategy includes a strategy for the range-extended system to forcibly initiate power generation when the vehicle power level equals a power threshold, a strategy for the range-extended system to initiate power generation in advance when the vehicle power level is less than a power warning value and greater than a power threshold, and a preset power level between the power warning value and the power threshold;

[0034] It should be understood that the vehicle's driving modes include at least an electric-first driving mode and a fuel-first driving mode. Both the electric-first driving mode and the fuel-first driving mode include corresponding preset power generation strategies. However, both the electric-first driving mode and the fuel-first driving mode are configured with a battery threshold, such that when the vehicle's battery level reaches the threshold in the corresponding electric-first driving mode or the fuel-first driving mode, the range extender system activates power generation. The target driving mode is either the electric-first driving mode or the fuel-first 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 pure electric priority mode, the battery threshold is 20% and the battery warning value is 30%. When the target driving mode is fuel priority mode, the battery threshold is 70% and the battery warning value is 80%.

[0040] Step S220: 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 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 battery value, it is necessary to monitor the vehicle's battery value in real time, and then determine the relationship between the vehicle's battery value at the current moment and the battery threshold and battery warning value, so as to obtain the target actual mileage and the corresponding target predicted mileage of the vehicle's battery value during the decline process at the 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 for obtaining a target actual mileage and a target predicted mileage of a vehicle when the vehicle's battery value at a previous moment drops to the vehicle's battery value at a current moment include: obtaining the target actual mileage of the vehicle in the process of the vehicle's battery value being consumed from a battery warning value to a battery threshold through the vehicle's odometer.

[0043] In an exemplary embodiment of the present application, the steps for obtaining a target actual mileage and a target predicted mileage when the vehicle's charge value at a previous moment drops to the vehicle's charge value 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 charge difference between the vehicle's charge value at a previous moment and the vehicle's charge value at a current moment.

[0044] For example, if the total mileage of the vehicle is X km 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×Y km.

[0045] In an exemplary embodiment of the present application, Figure 2 The following is a schematic flow chart showing 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 detailed as follows:

[0046] Step S221: If the current battery level of the vehicle is greater than the preset battery level, the previous battery level is determined as the battery warning value, and the current battery level is determined as the preset battery level; 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 vehicle's total power and the power warning value is 30% of the vehicle's total power, then the preset power value is 25% of the vehicle's total power.

[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 battery value drops from the battery warning value to the battery preset value is determined as the target actual mileage, and the total predicted mileage when the vehicle's battery value drops from the battery warning value to the battery preset value is determined as the target predicted mileage.

[0050] It should be understood that by setting a preset power value, which is the average of the power threshold and the power warning value, the corresponding total actual mileage and total predicted mileage are obtained when the vehicle's power value at the current moment drops from the power warning value to the preset power value, and these are 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 relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions, so as to start power generation as early as possible; on the other hand, when the vehicle's power value 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 vehicle's power value 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 is more referenceable.

[0051] It should be noted that, after the total actual mileage of the vehicle's battery value from the battery warning value to the battery preset value is determined as the target actual mileage; and the total predicted mileage of the vehicle's battery value from the battery warning value to the battery 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 or road condition information on which the vehicle is traveling.

[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 indicates 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 satisfy 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 a 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 target predicted mileage minus the target actual mileage.

[0059] Step S232: Determine a first target power generation level based on the mileage difference, where the first target power generation level is one of multiple 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 powers may include at least: a low power generation level, a medium power generation level, and a high power generation level. The low power generation level has a power generation power lower than the medium power generation level, and the medium power generation level has a power generation power lower than 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 far exceeds expectations. If the vehicle continues to travel according to this trend and generates electricity according to the original power generation strategy, or even if the range extender system is started in advance to generate electricity according to 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 that the first target power generation level is 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 size of 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 maintenance 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 reducing 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 whether the relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions in the process of determining that the vehicle's power value drops from the power preset value to the power threshold, 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 schematic flow diagram illustrating steps S224-S225 of a control method for a vehicle range extender system provided in an embodiment of the present application is provided. When the vehicle's battery level at the previous moment and the vehicle's battery level at the current moment are both between the battery warning value and the battery threshold, if the vehicle's battery level at the current moment is less than the vehicle's battery level at the previous moment and greater than the battery threshold, the method further includes steps S224 to S225, which are described in detail below:

[0068] Step S224: If the vehicle's battery level at the previous moment is less than the preset battery level and the vehicle's battery level at the current moment is greater than the battery threshold, a first battery level difference between the vehicle's battery level at the previous moment and the vehicle's battery level 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 charge level decreases after falling below the preset charge level, it approaches the charge threshold at which the range-extended system is forced to initiate power generation. Therefore, when the vehicle's charge level is consumed within the range from the preset charge level to the charge threshold, the target actual mileage and target predicted mileage are obtained every time a first preset charge difference occurs between the current vehicle charge level and the previous vehicle charge level. This allows for a more rapid understanding of whether the relationship between the target actual mileage and the target predicted mileage meets the preset energy consumption conditions, thereby enabling the range-extended system to be controlled to initiate power generation in advance or to maintain power generation. The first preset charge difference is less than the difference between the preset charge level and the charge threshold, and less than the difference between the charge warning value and the preset charge level.

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

[0072] In an exemplary embodiment of the present application, Figure 5 The following is a schematic flow chart showing steps S231'-S233' of a control method for a vehicle range extender system provided by an embodiment of the present application. Figure 5 As shown, the control method of the vehicle range extender system further 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 charge level has been depleted to a level equal to the charge threshold, it is necessary to determine whether the vehicle's charge level can be maintained at or above the charge threshold after the range extender system is activated, thereby preventing the situation where the vehicle's charge level is significantly greater than the power generated by the range extender system. Therefore, it is necessary to determine a second charge difference between the vehicle's current charge level and the charge threshold to determine whether the vehicle's charge level can be maintained at or above the charge threshold after the range extender system is activated.

[0075] Step S232': if the second power difference is greater than the 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.

[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 low, the second target power generation level is at least medium. If the first target power generation level is medium, the second target power generation level is at least high. Furthermore, if the range extender system stops generating electricity when the vehicle's charge level exceeds a charge threshold, the second target power generation level is at least low.

[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 a 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 at 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 further 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 charge value differs from the previous vehicle charge value by 1% of the total vehicle charge, then when the current vehicle charge value minus the previous vehicle charge value is greater than or equal to 0, the range extender system can be controlled to stop generating electricity; or when the current vehicle charge value differs from the previous vehicle charge value by 1% of the total vehicle charge, and 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 of the vehicle after starting is greater than the power warning value, the target actual mileage and target predicted mileage of the vehicle when the vehicle's power value at the previous moment (preferably the power warning value) drops to the power preset value can be obtained when the vehicle's power value 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 condition, the range extender system is controlled to start power generation in advance at the first target power generation level. In this process, the range extender system can be controlled to stop power generation when the vehicle's power value at the current moment is 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.

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

[0085] If the vehicle's charge level continues to decrease after reaching a preset charge level; or if the vehicle's charge level is equal to the preset charge level after startup and continues to decrease, the target actual mileage and target predicted mileage for the vehicle's charge level from the time the charge level of the vehicle at the previous moment decreases to the current charge level may be obtained each time the difference between the vehicle's charge level at the previous moment and the current moment is equal to a first charge difference, until the current charge level of the vehicle equals the charge threshold. Accordingly, if the relationship between the target actual mileage and the target predicted mileage does not satisfy a preset energy consumption condition, the range-extended system is controlled to start power generation in advance at the first target power generation level. During this process, the range-extended system may be controlled to stop power generation if the current charge level of the vehicle is greater than or equal to the previous charge level; or if the relationship between the target actual mileage and the target predicted mileage satisfies a preset energy consumption condition.

[0086] If the vehicle's battery level continues to decrease after reaching the preset battery level, and the rate of decrease exceeds the second battery level difference, the range extender's power generation level in the preset power generation strategy is adjusted based on the second target power generation level to increase the range extender's power generation level. During this process, if the vehicle's battery level at the current moment is greater than the vehicle's battery level at the previous moment, the range extender's power generation level may be controlled to stop.

[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 early power generation, thereby maintaining the vehicle's battery level above the battery threshold, but also improve the vehicle's NVH performance and reduce noise.

[0088] Figure 6 FIG. 3 shows a schematic structural diagram of a control device 300 for a vehicle range extension system provided in an embodiment of the present application. Figure 6 As shown, in this embodiment, a control device 300 for a vehicle range extender system is further provided, which is used to execute the control method for 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 vehicle's power value and a preset power generation strategy corresponding to the target driving mode in response to the current vehicle's target driving mode; wherein the vehicle's power value includes the vehicle's power value at a previous moment and the vehicle's power value 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 vehicle's power value is equal to a power threshold and a strategy in which the range extender system can start power generation in advance when the vehicle's power value is less than a 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 when the vehicle's battery value at the previous moment and the vehicle's battery value at the current moment are both between the battery warning value and the battery threshold, if the vehicle's battery value at the current moment is less than the vehicle's battery value 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 , which is configured 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, wherein the specific manner in which each module and unit performs operations has been described in detail in the method embodiment and will not be repeated here.

[0094] Figure 7 A structural diagram of an embodiment of the computing device of the vehicle of the present application is shown, which shows a structural diagram of a computer system of the computing device of the vehicle suitable for implementing the 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 above-mentioned 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. Various programs and data required for system operation are also stored in the RAM 503. The CPU 501, ROM 502 and RAM 503 are connected to each other via a bus 504. An 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, and the like; an output section 507 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 508 including a hard disk; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card or a modem. 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, or a semiconductor memory, is installed in the drive 510 as needed so that a computer program read from the removable medium can be installed in 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 via the communication section 509, and / or installed from a removable medium 511. When the computer program is executed by the central processing unit (CPU) 501, the various functions defined in the system of the present application are executed.

[0099] Another aspect of the present application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for controlling a vehicle range extender system. The computer-readable storage medium may be included in the computing device described in the above embodiments, or may exist independently and not be incorporated into the electronic device.

[0100] Another aspect of the present application further provides a computer program product or computer program, which includes at least one executable instruction. 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-mentioned control method of the vehicle range extender system.

[0101] It should be noted that the computer-readable medium shown in the embodiments of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. The computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination of the above. More specific examples of computer-readable storage media may 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 may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or device. In the present application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable computer program. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. A computer program embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0102] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions and operations of the devices, 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, program segment, or part of the code, and the above-mentioned module, program segment, or 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 an order different from that 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 the 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. In some cases, the names of these units do not constitute limitations on the units themselves.

[0104] According to one aspect of an embodiment of the present application, a computer system is further 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 into a random access memory (RAM), such as the method for executing the above-mentioned embodiment. Various programs and data required for system operation are also stored in the RAM. The CPU, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0105] The following components are connected to the I / O interface: an input section including a keyboard, mouse, and the like; an output section including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and speakers; a storage section including a hard disk; and a communication section including a network interface card such as a LAN (Local Area Network) card or a modem. The communication section 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 magnetic disks, optical disks, magneto-optical disks, semiconductor memories, and the like are installed in the drive as needed, so that computer programs read from the removable media can be installed in the storage section 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 this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail 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 this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0108] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0109] The various technical features of the technical solution of this application can be combined arbitrarily. 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 this 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. Ordinary technicians in this field can easily make corresponding changes or modifications based on the main ideas 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 current target driving mode of the vehicle, obtaining a charge value of the vehicle and a preset power generation strategy corresponding to the target driving mode; wherein the charge value of the vehicle includes a charge value of the vehicle at a previous moment and a charge 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 charge value of the vehicle is equal to a charge threshold, and a strategy for the range-extended system to start power generation in advance when the charge value of the vehicle is less than a charge warning value and greater than the charge threshold; When the battery level of the vehicle at the previous moment and the battery level of the vehicle at the current moment are both between the battery warning value and the battery threshold, and if the battery level of the vehicle at the current moment is less than the battery level 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 level of the vehicle at the previous moment drops to the battery level of the vehicle at the current moment; If the relationship between the target actual mileage and the target predicted mileage does not satisfy a preset energy consumption condition, adjusting the preset power generation strategy to obtain a 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, wherein 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 includes: If the current vehicle battery level is greater than the preset battery level, the vehicle battery level at the previous moment is determined as the battery warning value, and the current vehicle battery level is determined as the preset battery level; wherein the preset battery level is the average of the battery threshold and the battery warning value; Obtaining a total actual mileage and a total predicted mileage of the vehicle from the time when the battery value of the vehicle drops from the battery warning value to the preset battery value; The total actual mileage of the vehicle's battery value from the battery warning value to the battery preset value is determined as the target actual mileage, and the total predicted mileage of the vehicle's battery value from the battery warning value to the battery preset value is determined as the target predicted mileage.

3. The method according to claim 1, wherein 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 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, determining 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; 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, wherein If the relationship between the target actual mileage and the target predicted mileage does not satisfy a preset energy consumption condition, the method of adjusting the preset power generation strategy to obtain a target power generation strategy includes: If the relationship between the target actual mileage and the target predicted mileage does not satisfy a preset energy consumption condition, obtaining a mileage difference between the target actual mileage and the target predicted mileage; Determining a first target power generation level based on 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 a greater the mileage difference, a 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, wherein The method further comprises: If the current battery level of the vehicle is less than the battery threshold, determining a second battery level difference between the current battery level of the vehicle and the battery 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, wherein 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, wherein The method for obtaining a target actual mileage and a target predicted mileage corresponding to the vehicle during a process in which the vehicle's power value is consumed from the power warning value to the power threshold further 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 extender system, characterized in that: The device comprises: a first acquisition module, configured to, in response to a current target driving mode of the vehicle, acquire a charge value of the vehicle and a preset power generation strategy corresponding to the target driving mode; wherein the charge value of the vehicle includes a charge value of the vehicle at a previous moment and a charge value of the vehicle at a current moment; and wherein the preset power generation strategy includes a strategy for the range-extended system to forcibly initiate power generation when the charge value of the vehicle is equal to a charge threshold, and a strategy for the range-extended system to initiate power generation in advance when the charge value of the vehicle is less than a charge warning value and greater than the charge threshold; a second acquisition module, configured to, 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, and 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, acquire 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 adjustment 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 extender system to start power generation in advance based on the target power generation strategy.

9. A vehicle, characterized in that: include: Controller; The 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 according to 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 according to any one of claims 1 to 7.

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