Vehicle generation power control method and device

Abstract

The invention provides a vehicle generation power control method and device, and the method comprises the steps: obtaining the average demand driving power of a vehicle in a preset time period, the current driving state of the vehicle, and the state of charge SOC of a vehicle battery in a vehicle operation process; according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC, determining the target generated power of a range extender of the vehicle; and controlling a range extender of the vehicle to operate based on the target generated power. By applying the method provided by the invention, the target generated power of the range extender of the vehicle can be quickly and accurately determined, so that the range extender of the vehicle can be accurately controlled to operate according to the target generated power.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle power generation control method and device. Background Art

[0002] With the rapid development of new energy vehicle technology, the extended-range hybrid system has become one of the key technologies to improve vehicle range. The system charges the power battery through the range extender, effectively solving the problem of short range of pure electric vehicles. However, in practical applications, how to accurately adjust the power generation according to the real-time working conditions of the vehicle to optimize system efficiency, reduce costs and ensure vehicle performance is still an urgent problem to be solved.

[0003] Existing extended-range hybrid systems have obvious deficiencies in power generation control. Many systems mainly determine power generation based on the battery's SOC (state of charge). Since various factors such as vehicle load and environmental conditions will affect power generation demand, relying solely on SOC to determine power generation makes it difficult for existing systems to accurately meet actual power generation demand. This may result in excessive or low power generation, which in turn affects the vehicle's fuel economy, power performance, and battery life. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a vehicle power generation control method that can accurately control the operation of the vehicle's range extender.

[0005] The present application also provides a vehicle power generation control device to ensure the implementation and application of the above method in practice.

[0006] A vehicle power generation control method, the method comprising:

[0007] During the operation of the vehicle, obtaining the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge (SOC) of the vehicle battery;

[0008] Determining a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC;

[0009] The operation of the range extender of the vehicle is controlled based on the target power generation power.

[0010] Optionally, the method described above includes obtaining the average required driving power of the vehicle within a preset time period, comprising:

[0011] Obtaining the required driving power of the vehicle at each collection time point within a preset time period; the required driving power is determined based on driving operation information and a driving motor torque;

[0012] The average required driving power for the preset time period is calculated based on the required driving power at each collection time point within the preset time period.

[0013] In the above method, optionally, determining the target power generation power of the range extender of the vehicle according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC includes:

[0014] Obtaining a required power generation profile corresponding to the current driving state of the vehicle;

[0015] The required power generation power profile is queried according to the average required driving power of the vehicle and the SOC to obtain the target power generation power of the range extender of the vehicle.

[0016] In the above method, optionally, determining the target power generation power of the range extender of the vehicle according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC includes:

[0017] When the SOC is less than a preset first threshold value, or the average required driving power is greater than a preset second threshold value, determining the maximum power generation operation of the range extender of the vehicle as the target power generation power;

[0018] When the SOC is not less than a preset first threshold and the average required driving power is not greater than a preset second threshold, the optimal power generation points corresponding to the current driving state of the vehicle are determined; at each of the optimal power generation points, a target power generation power matching the average required driving power and the SOC is determined, and the target power generation power is not less than the average required driving power.

[0019] In the above method, optionally, the process of obtaining the current driving state of the vehicle includes:

[0020] Detecting the current driving condition of the vehicle, wherein the driving condition includes a slope and a load;

[0021] If the slope of the vehicle is greater than the slope threshold, and the load is greater than the load threshold, determining that the current driving state of the vehicle is a heavy-load uphill state;

[0022] If the slope of the vehicle is less than the slope threshold, and the load is greater than the load threshold, determining that the current driving state of the vehicle is a heavy-load downhill state;

[0023] If the slope of the vehicle is greater than the slope threshold, and the load is less than the load threshold, determining that the current driving state of the vehicle is an unloaded uphill state;

[0024] If the slope of the vehicle is less than the slope threshold, and the load is less than the slope threshold, it is determined that the current driving state of the vehicle is an unloaded downhill state.

[0025] A vehicle power generation control device, comprising:

[0026] An acquisition unit, used to acquire, during the operation of the vehicle, the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge (SOC) of the vehicle battery;

[0027] a determination unit, configured to determine a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC;

[0028] A control unit is used to control the operation of the range extender of the vehicle based on the target power generation.

[0029] In the above device, optionally, the acquisition unit includes:

[0030] A first acquisition subunit is used to acquire the required driving power of the vehicle at each collection time point within a preset time period; the required driving power is determined based on driving operation information and a driving motor torque;

[0031] The calculation subunit is used to calculate the average required driving power of the preset time period according to the required driving power at each collection time point within the preset time period.

[0032] In the above device, optionally, the determining unit includes:

[0033] A second acquisition subunit is used to acquire a required power generation power profile corresponding to the current driving state of the vehicle;

[0034] The query subunit is used to query the required power generation power profile according to the average required driving power of the vehicle and the SOC to obtain the target power generation power of the range extender of the vehicle.

[0035] In the above device, optionally, the determining unit includes:

[0036] a first determining subunit, configured to determine the maximum power generation operation of the range extender of the vehicle as the target power generation power when the SOC is less than a preset first threshold value or the average required driving power is greater than a preset second threshold value;

[0037] The second determination subunit is used to determine the optimal power generation power points corresponding to the current driving state of the vehicle when the SOC is not less than a preset first threshold and the average required driving power is not greater than a preset second threshold; and determine a target power generation power that matches the average required driving power and the SOC at each of the optimal power generation power points, and the target power generation power is not less than the average required driving power.

[0038] In the above device, optionally, the acquisition unit includes:

[0039] A detection subunit, used to detect the current driving condition of the vehicle, wherein the driving condition includes a slope and a load;

[0040] a third determination subunit, configured to determine that the current driving state of the vehicle is a heavy-load uphill state if the slope of the vehicle is greater than a slope threshold and the load is greater than a load threshold;

[0041] a fourth determination subunit, configured to determine that the current driving state of the vehicle is a heavy-load downhill state if the slope of the vehicle is less than a slope threshold and the load is greater than a load threshold;

[0042] a fifth determining subunit, configured to determine that the current driving state of the vehicle is an unloaded uphill state if the slope of the vehicle is greater than a slope threshold and the load is less than a load threshold;

[0043] The sixth determination subunit is used to determine that the current driving state of the vehicle is an unloaded downhill state if the slope of the vehicle is less than a slope threshold and the load is less than the slope threshold.

[0044] Compared with the prior art, this application has the following advantages:

[0045] The present application provides a method and device for determining an exhaust gas after-treatment system, the method comprising: during the operation of the vehicle, obtaining the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge (SOC) of the vehicle battery; determining the target power generation power of the vehicle's range extender according to the current driving state of the vehicle, the average required driving power of the vehicle, and the SOC; and controlling the operation of the vehicle's range extender based on the target power generation power. Applying the method provided in the present application, it is possible to quickly and accurately determine the target power generation power of the range extender, making the control of the range extender more intelligent and efficient. This not only improves the operating efficiency of the vehicle, but also helps to extend the battery life and reduce maintenance costs, thereby bringing users a better driving experience and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0047] Figure 1 A flow chart of a vehicle power generation control method provided in this application;

[0048] Figure 2 A flowchart of a process for determining a target power generation of a range extender of a vehicle provided in the present application;

[0049] Figure 3 A flow chart of a process for determining the required power generation power of a vehicle range extender provided in the present application;

[0050] Figure 4 An example diagram of a power generation allocation strategy provided in this application;

[0051] Figure 5 A schematic diagram of the structure of a vehicle power generation control device provided in this application;

[0052] Figure 6 A schematic diagram of the structure of an electronic device provided in this application. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0055] Existing extended-range hybrid systems have obvious deficiencies in power generation control. Many systems mainly determine power generation based on the battery's SOC (state of charge). Since various factors such as vehicle load and environmental conditions will affect power generation demand, relying solely on SOC to determine power generation makes it difficult for existing systems to accurately meet actual power generation demand. This may result in excessive or low power generation, which in turn affects the vehicle's fuel economy, power performance, and battery life.

[0056] In addition, a significant limitation of the existing solution is its applicability. Since the design premise of the solution is that the range extender power can cover the driving power, it is mainly suitable for extended-range hybrid systems with larger range extender power. For systems with smaller range extender power, this solution may cause the SOC (state of charge) of the vehicle to be too low during operation, thereby affecting the vehicle's range and performance. This undoubtedly limits the scope of application and market competitiveness of the existing solution.

[0057] Based on this, an embodiment of the present application provides a vehicle power generation control method, which can be applied to electronic equipment, and the electronic equipment may include a transmission control unit TCU, an ECU (Electronic Control Unit), a VCU (Vehicle Control Unit), an MCU (Micro Controller Unit), an HCU (Hybrid Control Unit), a server, a PC, a PAD, a mobile phone, or one or more thereof; the method flow chart of the method is as follows Figure 1 As shown, specifically including:

[0058] S101: During vehicle operation, the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge (SOC) of the vehicle battery are obtained.

[0059] In this embodiment, the vehicle may be any type of extended-range vehicle, for example, an extended-range truck.

[0060] In this embodiment, the power data consumed by the drive system is collected in real time through on-board sensors and controllers (such as motor controllers, battery management systems, etc.). During a preset time period, the system records the instantaneous power at all time points and calculates the average of these power values. This time period can be fixed (such as every minute or every second) or dynamically adjusted according to specific driving conditions.

[0061] Optionally, the vehicle's driving state information can be obtained through a variety of sensors, including but not limited to a slope sensor, a load sensor, a vehicle speed sensor, an accelerometer, a steering angle sensor, a brake pedal position sensor, etc. The vehicle's driving state information is analyzed by the data collected by the various sensors, for example, it can be one or more of loading, unloading, uphill, downhill, heavy load, no load, and idling waiting.

[0062] In this embodiment, the vehicle battery may be monitored by a battery management system (BMS) to obtain the SOC of the vehicle battery.

[0063] S102: Determine a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC.

[0064] In an embodiment provided in the present application, based on the above scheme, optionally, the process of determining the target power generation power of the range extender of the vehicle according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC is as follows: Figure 2 As shown, including:

[0065] S201: Obtain a required power generation power configuration file corresponding to the current driving state of the vehicle.

[0066] In this embodiment, a corresponding profile can be selected from a preset required power generation profile library according to the driving state, and different profiles contain recommended power generation ranges for different SOCs and average required driving powers under different driving states.

[0067] In this embodiment, different driving states correspond to different required power generation power profiles, and the required power generation power profiles may include different average required driving powers and different corresponding relationships between SOC and power generation power.

[0068] Optionally, since different driving states have different power requirements, the present application sets different required power generation power profiles for different driving states.

[0069] S202: querying the required power generation configuration file according to the average required driving power of the vehicle and the SOC to obtain a target power generation power of the range extender of the vehicle.

[0070] In this embodiment, the power generation power that matches the average required driving power and the SOC in the required power generation power profile may be determined as the target power generation power of the range extender of the vehicle.

[0071] In this embodiment, by combining the average required driving power and the current SOC value, searching for the corresponding recommended power generation value in the selected required power generation profile, and then using this recommended value as the target power generation power of the range extender, the target power generation power of the range extender can be determined quickly and accurately.

[0072] In an embodiment provided in the present application, based on the above solution, optionally, determining the target power generation power of the range extender of the vehicle according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC includes:

[0073] When the SOC is less than a preset first threshold value, or the average required driving power is greater than a preset second threshold value, determining the maximum power generation operation of the range extender of the vehicle as the target power generation power;

[0074] When the SOC is not less than a preset first threshold and the average required driving power is not greater than a preset second threshold, the optimal power generation points corresponding to the current driving state of the vehicle are determined; at each of the optimal power generation points, a target power generation power matching the average required driving power and the SOC is determined, and the target power generation power is not less than the average required driving power.

[0075] In this embodiment, when the SOC is lower than the first threshold, it means that the remaining power of the battery is small and may not be able to meet the continuous driving needs of the vehicle. At this time, the range extender needs to generate power at maximum power to ensure that the vehicle has sufficient power output, avoid power interruption due to insufficient power, and avoid excessive discharge of the battery, which will damage the health of the battery and reduce the service life of the battery.

[0076] Optionally, when the average required driving power is greater than the preset second threshold, the range extender generates electricity at maximum power, which can reduce the loss of energy conversion and improve the overall energy efficiency on the one hand, and on the other hand, the vehicle may need instantaneous high power output. The range extender generates electricity at maximum power to ensure that the vehicle can still provide sufficient power in these cases, ensuring that the vehicle can drive stably in various situations.

[0077] In this embodiment, when the SOC is not less than the first threshold and the average required driving power is not greater than the second threshold, the power generation point that meets both the current average required driving power and the SOC state can be screened out from the optimal power generation point corresponding to the determined driving state.

[0078] In some embodiments, the basic power generation of the range extender can be preliminarily calculated based on the average required driving power and the current driving state, and the basic power generation can be corrected according to the difference between the actual value of the battery SOC and the set threshold to obtain the target power generation. For example, the power generation can be increased when the SOC is too low, and the power generation can be reduced when the SOC is too high.

[0079] S103: Controlling the operation of the range extender of the vehicle based on the target power generation power.

[0080] In this embodiment, the power generation power of the range extender can be controlled to reach the target power generation power.

[0081] In some embodiments, a preset range extender characteristic curve can be queried according to the target power generation, the speed and load parameters corresponding to the target power generation can be determined, a control instruction can be generated according to the speed and load parameters, and the control instruction can be sent to the range extender to control the operation of the range extender.

[0082] In an embodiment provided in the present application, based on the above solution, optionally, the process of obtaining the average required driving power of the vehicle within a preset time period includes:

[0083] Obtaining the required driving power of the vehicle at each collection time point within a preset time period; the required driving power is determined based on driving operation information and a driving motor torque;

[0084] The average required driving power for the preset time period is calculated based on the required driving power at each collection time point within the preset time period.

[0085] In this embodiment, the driving operation information of the vehicle can be collected regularly (for example, every second or every millisecond) within a preset time period. The driving operation information may include the accelerator pedal position, the brake pedal position, the steering angle, etc. At the same time, the torque output of the drive motor is monitored.

[0086] For each acquisition time point, the required driving power at that time point is calculated based on the driving operation information and the driving motor torque.

[0087] Collect the required driving power data at all collection time points within the preset time period. Then use the following formula to calculate the average value:

[0088] Average required driving power = (the sum of required driving power at all acquisition time points) / number of acquisitions

[0089] Alternatively, if the data is continuous, you can use the integral divided by time method to calculate the average.

[0090] In an embodiment provided in the present application, based on the above solution, optionally, the process of obtaining the current driving state of the vehicle includes:

[0091] Detecting the current driving condition of the vehicle, wherein the driving condition includes a slope and a load;

[0092] If the slope of the vehicle is greater than the slope threshold, and the load is greater than the load threshold, determining that the current driving state of the vehicle is a heavy-load uphill state;

[0093] If the slope of the vehicle is less than the slope threshold, and the load is greater than the load threshold, determining that the current driving state of the vehicle is a heavy-load downhill state;

[0094] If the slope of the vehicle is greater than the slope threshold, and the load is less than the load threshold, determining that the current driving state of the vehicle is an unloaded uphill state;

[0095] If the slope of the vehicle is less than the slope threshold, and the load is less than the slope threshold, it is determined that the current driving state of the vehicle is an unloaded downhill state.

[0096] In one embodiment provided in the present application, the vehicle may be an extended-range mining truck, and the process for determining the power generation required by the vehicle's range extender is as follows: Figure 3 As shown, the vehicle controller VCU of the vehicle has multiple monitoring functions, which can monitor the vehicle speed, output shaft speed, driver operation related information (such as accelerator, brake, etc.), power battery related information (including real-time power and current and their limits, SOC), drive motor related information (such as real-time torque, temperature, fault), extended range motor related information (also covering real-time torque, temperature, fault), engine related information (such as speed, torque) and other related information in real time.

[0097] Based on the monitored information, the VCU will calculate the current required driving power according to the driver's intended torque, and calculate the average required driving power at regular intervals. At the same time, the VCU uses the information from the load sensor and slope sensor to determine the current driving state of the vehicle, such as heavy load uphill, heavy load downhill, no load uphill or no load downhill, and then selects the corresponding required power generation MAP (demand power generation profile) according to the vehicle's driving state.

[0098] The required power generation power MAP has a specific coordinate axis meaning. The X-axis is the SOC interval (obtained by SOC segmentation), the Y-axis is the average driving required power, and the Z-axis is the fixed power generation point selected based on the current range extender configuration.

[0099] The power generation mode is different under different SOC ranges and driving power requirements. In the low SOC range, the driving power demand is not considered, and the power is generated at the maximum power, entering the forced power conservation mode; when the driving power demand is large, the power is also generated at the maximum power, entering the high-power power conservation mode; when the SOC is high, the SOC at which power generation is stopped is determined according to the required driving power; and when the SOC is moderate and the power generation can cover the driving power, the required power generation is calculated according to the required driving power and its motor system efficiency to ensure that the required power generation is greater than the required driving power. The required power MAP under the four vehicle states of heavy load uphill, heavy load downhill, no load uphill, and no load downhill is calibrated according to the above principles and combined with the actual needs of the mining area to determine the power generation distribution logic. The power generation distribution strategy is as follows: Figure 4 shown.

[0100] In this embodiment, the matching of power generation points follows the principle of optimal efficiency and optimal fuel consumption. This process requires comprehensive consideration of the engine universal characteristic curve and the motor system efficiency MAP to ensure that each power generation point is in the best power generation state. Subsequently, the VCU will accurately determine the current required power generation power based on the current SOC (state of charge), average driving demand power and vehicle driving state. In this way, the VCU can coordinate the working state of each component to achieve efficient operation of the entire power system. The vehicle controller VCU undertakes important tasks during the operation of the vehicle. On the one hand, it can judge the current driving state of the vehicle in real time, such as whether it is heavy-loaded uphill, heavy-loaded downhill, unloaded uphill or unloaded downhill, and then select the most suitable and economical power generation point. On the other hand, the required power can be found through the required power generation power MAP, which expands the calibration space and helps to improve the adaptability of working conditions.

[0101] By applying the method provided in the embodiment of the present application, the current driving state of the vehicle can be accurately determined first, which is the basis for subsequent decision-making. Then, different required power generation MAPs are switched according to the driving state of the vehicle. The demand for power generation of the vehicle varies under different driving states, and accurate adaptation can be achieved by switching MAP. Finally, the importance of the required power generation MAP is that it can meet the vehicle's current driving state, regardless of the driving power demand and the selection of appropriate power generation at different SOCs (state of charge), thereby ensuring efficient and stable operation of the vehicle's power system.

[0102] and Figure 1 Corresponding to the method described above, the embodiment of the present application also provides a vehicle power generation control device for Figure 1 The specific implementation of the method is shown in the following diagram: Figure 5 As shown, specifically including:

[0103] The acquisition unit 501 is used to acquire the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle and the state of charge SOC of the vehicle battery during the operation of the vehicle;

[0104] A determination unit 502, configured to determine a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC;

[0105] The control unit 503 is used to control the operation of the range extender of the vehicle based on the target power generation.

[0106] In an embodiment provided in the present application, based on the above implementation process, optionally, the acquisition unit includes:

[0107] A first acquisition subunit is used to acquire the required driving power of the vehicle at each collection time point within a preset time period; the required driving power is determined based on driving operation information and a driving motor torque;

[0108] The calculation subunit is used to calculate the average required driving power of the preset time period according to the required driving power at each collection time point within the preset time period.

[0109] In an embodiment provided in the present application, based on the above implementation process, optionally, the determining unit includes:

[0110] A second acquisition subunit is used to acquire a required power generation power profile corresponding to the current driving state of the vehicle;

[0111] The query subunit is used to query the required power generation power profile according to the average required driving power of the vehicle and the SOC to obtain the target power generation power of the range extender of the vehicle.

[0112] In an embodiment provided in the present application, based on the above implementation process, optionally, the determining unit includes:

[0113] a first determining subunit, configured to determine the maximum power generation operation of the range extender of the vehicle as the target power generation power when the SOC is less than a preset first threshold value or the average required driving power is greater than a preset second threshold value;

[0114] The second determination subunit is used to determine the optimal power generation power points corresponding to the current driving state of the vehicle when the SOC is not less than a preset first threshold and the average required driving power is not greater than a preset second threshold; and determine a target power generation power that matches the average required driving power and the SOC at each of the optimal power generation power points, and the target power generation power is not less than the average required driving power.

[0115] In an embodiment provided in the present application, based on the above implementation process, optionally, the acquisition unit includes:

[0116] A detection subunit, used to detect the current driving condition of the vehicle, wherein the driving condition includes a slope and a load;

[0117] a third determination subunit, configured to determine that the current driving state of the vehicle is a heavy-load uphill state if the slope of the vehicle is greater than a slope threshold and the load is greater than a load threshold;

[0118] a fourth determination subunit, configured to determine that the current driving state of the vehicle is a heavy-load downhill state if the slope of the vehicle is less than a slope threshold and the load is greater than a load threshold;

[0119] a fifth determining subunit, configured to determine that the current driving state of the vehicle is an unloaded uphill state if the slope of the vehicle is greater than a slope threshold and the load is less than a load threshold;

[0120] The sixth determination subunit is used to determine that the current driving state of the vehicle is an unloaded downhill state if the slope of the vehicle is less than a slope threshold and the load is less than the slope threshold.

[0121] The specific principles and execution processes of each unit and module in the vehicle power generation control device disclosed in the above-mentioned embodiment of the present application are the same as the vehicle power generation control method disclosed in the above-mentioned embodiment of the present application. Please refer to the corresponding parts of the vehicle power generation control method provided in the above-mentioned embodiment of the present application, and will not be repeated here.

[0122] An embodiment of the present application further provides a storage medium, which includes stored instructions, wherein when the instructions are executed, the device where the storage medium is located is controlled to execute the above-mentioned vehicle power generation control method.

[0123] The present application also provides an electronic device, whose structural diagram is as follows: Figure 6As shown, it specifically includes a memory 601 and one or more instructions 602, wherein the one or more instructions 602 are stored in the memory 601 and are configured to be executed by one or more processors 603 to perform the following operations:

[0124] During the operation of the vehicle, obtaining the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge (SOC) of the vehicle battery;

[0125] Determining a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC;

[0126] The operation of the range extender of the vehicle is controlled based on the target power generation power.

[0127] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0128] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0129] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0130] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0131] The above is a detailed introduction to a vehicle power generation control method provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vehicle power generation control method, characterized in that: include: During the operation of the vehicle, obtaining the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge (SOC) of the vehicle battery; Determining a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC; The operation of the range extender of the vehicle is controlled based on the target power generation power.

2. The method according to claim 1, characterized in that The process of obtaining the average required driving power of the vehicle within a preset time period includes: Obtaining the required driving power of the vehicle at each collection time point within a preset time period; the required driving power is determined based on driving operation information and a driving motor torque; The average required driving power for the preset time period is calculated based on the required driving power at each collection time point within the preset time period.

3. The method according to claim 1, characterized in that The determining, according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC, a target power generation power of the range extender of the vehicle comprises: Obtaining a required power generation profile corresponding to the current driving state of the vehicle; The required power generation power profile is queried according to the average required driving power of the vehicle and the SOC to obtain the target power generation power of the range extender of the vehicle.

4. The method according to claim 1, characterized in that The determining, according to the current driving state of the vehicle, the average required driving power of the vehicle and the SOC, a target power generation power of the range extender of the vehicle comprises: When the SOC is less than a preset first threshold value, or the average required driving power is greater than a preset second threshold value, determining the maximum power generation operation of the range extender of the vehicle as the target power generation power; When the SOC is not less than a preset first threshold and the average required driving power is not greater than a preset second threshold, the optimal power generation points corresponding to the current driving state of the vehicle are determined; at each of the optimal power generation points, a target power generation power matching the average required driving power and the SOC is determined, and the target power generation power is not less than the average required driving power.

5. The method according to claim 1, characterized in that The process of obtaining the current driving state of the vehicle includes: Detecting the current driving condition of the vehicle, wherein the driving condition includes a slope and a load; If the slope of the vehicle is greater than the slope threshold, and the load is greater than the load threshold, determining that the current driving state of the vehicle is a heavy-load uphill state; If the slope of the vehicle is less than the slope threshold, and the load is greater than the load threshold, determining that the current driving state of the vehicle is a heavy-load downhill state; If the slope of the vehicle is greater than the slope threshold, and the load is less than the load threshold, determining that the current driving state of the vehicle is an unloaded uphill state; If the slope of the vehicle is less than the slope threshold, and the load is less than the slope threshold, it is determined that the current driving state of the vehicle is an unloaded downhill state.

6. A vehicle power generation control device, characterized in that: include: An acquisition unit, used to acquire, during the operation of the vehicle, the average required driving power of the vehicle within a preset time period, the current driving state of the vehicle, and the state of charge SOC of the vehicle battery; a determination unit, configured to determine a target power generation power of a range extender of the vehicle according to a current driving state of the vehicle, an average required driving power of the vehicle, and the SOC; A control unit is used to control the operation of the range extender of the vehicle based on the target power generation.

7. The device according to claim 6, characterized in that The acquisition unit comprises: A first acquisition subunit is used to acquire the required driving power of the vehicle at each collection time point within a preset time period; the required driving power is determined based on driving operation information and a driving motor torque; The calculation subunit is used to calculate the average required driving power of the preset time period according to the required driving power at each collection time point within the preset time period.

8. The device according to claim 6, characterized in that The determining unit comprises: A second acquisition subunit is used to acquire a required power generation power profile corresponding to the current driving state of the vehicle; The query subunit is used to query the required power generation power profile according to the average required driving power of the vehicle and the SOC to obtain the target power generation power of the range extender of the vehicle.

9. The device according to claim 6, characterized in that The determining unit comprises: a first determining subunit, configured to determine the maximum power generation operation of the range extender of the vehicle as the target power generation power when the SOC is less than a preset first threshold value or the average required driving power is greater than a preset second threshold value; The second determination subunit is used to determine the optimal power generation power points corresponding to the current driving state of the vehicle when the SOC is not less than a preset first threshold and the average required driving power is not greater than a preset second threshold; and determine a target power generation power that matches the average required driving power and the SOC at each of the optimal power generation power points, and the target power generation power is not less than the average required driving power.

10. The device according to claim 6, characterized in that The acquisition unit comprises: A detection subunit, used to detect the current driving condition of the vehicle, wherein the driving condition includes a slope and a load; a third determination subunit, configured to determine that the current driving state of the vehicle is a heavy-load uphill state if the slope of the vehicle is greater than a slope threshold and the load is greater than a load threshold; a fourth determination subunit, configured to determine that the current driving state of the vehicle is a heavy-load downhill state if the slope of the vehicle is less than a slope threshold and the load is greater than a load threshold; a fifth determining subunit, configured to determine that the current driving state of the vehicle is an unloaded uphill state if the slope of the vehicle is greater than a slope threshold and the load is less than a load threshold; The sixth determination subunit is used to determine that the current driving state of the vehicle is an unloaded downhill state if the slope of the vehicle is less than a slope threshold and the load is less than the slope threshold.

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