Vehicle power generation power control method and device

Abstract

The application provides a vehicle power generation control method and device, the method comprising: obtaining the average demand driving power of the vehicle in a preset time period, the current driving state of the vehicle and the state of charge (SOC) of the vehicle battery during the running of the vehicle; determining the target power generation of the range extender of the vehicle according to the current driving state of the vehicle, the average demand driving power of the vehicle and the SOC; and controlling the operation of the range extender of the vehicle based on the target power generation. The method provided by the application can quickly and accurately determine the target power generation of the range extender of the vehicle, so that the operation of the range extender of the vehicle can be accurately controlled according to the target power generation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle power generation power control method and device. BACKGROUND

[0002] With the rapid development of new energy vehicle technology, the extended-range hybrid system has become one of the key technologies to improve the vehicle's 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 power according to the real-time working condition of the vehicle to optimize system efficiency, reduce cost and ensure vehicle performance is still a problem to be solved.

[0003] The existing extended-range hybrid system has obvious deficiencies in power generation power control. Many systems mainly determine the power generation power according to the SOC (state of charge) of the battery. Since various factors such as vehicle load, environmental conditions, etc. will affect the power generation power demand, relying solely on SOC to determine the power generation power makes it difficult for the existing system to accurately meet the actual power generation power demand. This may result in too high or too low power generation power, thereby affecting the fuel economy, power performance and battery life of the vehicle. SUMMARY

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

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

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

[0007] During the operation of the vehicle, the average demand driving power of the vehicle in a predetermined time period, the current driving state of the vehicle and the state of charge SOC of the vehicle battery are obtained;

[0008] According to the current driving state of the vehicle, the average demand driving power of the vehicle and the SOC, the target power generation power of the range extender of the vehicle is determined;

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

[0010] The above method, optionally, the process of obtaining the average demand driving power of the vehicle in a predetermined time period comprises:

[0011] The demand driving power of each collection time point in the predetermined time period is obtained; the demand driving power is determined based on driving operation information and driving motor torque.

[0012] According to the demand-driven power of each acquisition time point in the preset time period, the average demand-driven power of the preset time period is calculated.

[0013] The method can further include:

[0014] obtaining a demand power configuration file corresponding to the current driving state of the vehicle;

[0015] querying the demand power configuration file according to the average demand-driven power of the vehicle and the SOC to obtain the target power of the range extender of the vehicle.

[0016] The method can further include:

[0017] when the SOC is less than a preset first threshold or the average demand-driven power is greater than a preset second threshold, determining the maximum power generation of the range extender of the vehicle as the target power;

[0018] when the SOC is not less than the preset first threshold and the average demand-driven power is not greater than the preset second threshold, determining each optimal power generation point corresponding to the current driving state of the vehicle, and determining the target power matching the average demand-driven power and the SOC from the optimal power generation points, the target power being not less than the average demand-driven power.

[0019] The method can further include:

[0020] detecting the current driving condition of the vehicle, the driving condition including a slope and a load;

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

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

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

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

[0025] A vehicle power generation control device comprises:

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

[0027] A determination unit is configured to determine a target power generation of a 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;

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

[0029] The device described above, optionally, the acquisition unit comprises:

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

[0031] A calculation subunit is configured to calculate the average required driving power of the preset time period according to the required driving power of the vehicle at each collection time point in the preset time period.

[0032] The device described above, optionally, the determination unit comprises:

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

[0034] A query subunit is configured to query the required power generation configuration file according to the average required driving power of the vehicle and the SOC to obtain the target power generation of the range extender of the vehicle.

[0035] The device described above, optionally, the determination unit comprises:

[0036] A first determination subunit is configured to determine the maximum power generation of the range extender of the vehicle as the target power generation 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 determining sub-unit is configured to determine each optimal power generation point corresponding to the current driving state of the vehicle when the SOC is not less than a preset first threshold and the average demand driving power is not greater than a preset second threshold; and determine a target power generation point from the optimal power generation points, wherein the target power generation point is not less than the average demand driving power.

[0038] The device described above, optionally, the acquisition unit comprises:

[0039] The detection sub-unit is configured to detect the current driving condition of the vehicle, wherein the driving condition comprises a slope and a load;

[0040] The third determining sub-unit is 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] The fourth determining sub-unit is 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] The fifth determining sub-unit is configured to determine that the current driving state of the vehicle is an empty-load 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 determining sub-unit is configured to determine that the current driving state of the vehicle is an empty-load downhill state if the slope of the vehicle is less than a slope threshold and the load is less than a load threshold.

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

[0045] The present application provides a determination method and device for an exhaust aftertreatment system, the method comprising: acquiring, during the operation of a vehicle, an average demand driving power of the vehicle in a preset time period, a current driving state of the vehicle, and a state of charge (SOC) of a battery of the vehicle; determining a target power generation of a range extender of the vehicle according to the current driving state of the vehicle, the average demand driving power of the vehicle, and the SOC; and controlling the range extender of the vehicle to operate based on the target power generation. The method provided by the present application can quickly and accurately determine the target power generation of the range extender, making the control of the range extender more intelligent and efficient. This not only improves the operation efficiency of the vehicle, but also helps to prolong the service life of the battery and reduce the maintenance cost, thereby providing better driving experience and economy for users. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0047] Figure 1 A flow chart of a vehicle power generation control method provided by the present application;

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

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

[0050] Figure 4 An example diagram of a power generation distribution strategy provided by the present application;

[0051] Figure 5 A structural schematic diagram of a vehicle power generation control device provided by the present application;

[0052] Figure 6 A structural schematic diagram of an electronic device provided by the present application. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort fall within the scope of protection of the present application.

[0054] In the present application, the term “comprising”, “containing” or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement “comprising a” does not exclude the presence of another identical element in the process, method, article or device including the element.

[0055] The existing extended-range hybrid system has obvious deficiencies in power generation power control. Many systems mainly determine the power generation power according to the SOC (state of charge) of the battery. Since various factors such as vehicle load, environmental conditions, etc. will affect the power generation power demand, relying solely on SOC to determine the power generation power makes it difficult for existing systems to accurately meet the actual power generation power demand. This can result in power generation power being too high or too low, affecting the fuel economy, power performance and battery life of the vehicle.

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

[0057] Based on this, the embodiments of the present application provide a vehicle power generation power control method, which can be applied to an electronic device, and the electronic device can include one or more of 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, etc. The method flowchart of the method is as shown in Figure 1 The specific steps include:

[0058] S101: During vehicle operation, the average demand driving power of the vehicle in a predetermined 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 can be various types of extended-range vehicles, such as extended-range trucks.

[0060] In this embodiment, the electric energy data consumed by the drive system is collected in real time by on-board sensors and controllers (such as motor controllers, battery management systems, etc.). In a predetermined 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 (e.g. every minute or every second), or it can be dynamically adjusted according to specific driving conditions.

[0061] Optionally, the driving state information of the vehicle can be obtained by various sensors, including but not limited to a slope sensor, a load sensor, a speed sensor, an accelerometer, a steering angle sensor, a brake pedal position sensor, etc. The driving state information of the vehicle is analyzed by the data collected by various sensors, for example, one or more of loading, unloading, uphill, downhill, heavy load, empty load, and idling waiting, etc.

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

[0063] S102: Determine the target power generation of the range extender of the vehicle according to the current driving state of the vehicle, the average demand 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 of the range extender of the vehicle according to the current driving state of the vehicle, the average demand driving power of the vehicle, and the SOC, comprises: Figure 2

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

[0066] In the embodiment, the corresponding configuration file can be selected from the pre-set demand power generation configuration file library according to the driving state, and different configuration files contain recommended power generation ranges for different SOCs and average demand driving powers in different driving states.

[0067] In the embodiment, different demand power generation configuration files correspond to different driving states, and the demand power generation configuration file can include the corresponding relationship between different average demand driving powers and different SOCs and power generations.

[0068] Optionally, since different driving states have different power demands, the present application sets different demand power generation configuration files for different driving states.

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

[0070] In the embodiment, the power generation in the demand power generation configuration file that matches the average demand driving power and the SOC can be determined as the target power generation of the range extender of the vehicle.

[0071] ​In the embodiment, by combining the average demand driving power and the current SOC value, the corresponding power generation power recommendation value is found in the selected demand power generation power profile, and then the recommendation value is taken as the target power generation power of the range extender, so that the target power generation power of the range extender can be quickly and accurately determined.

[0072] In an embodiment provided in the application, based on the above scheme, optionally, the target power generation power of the range extender of the vehicle is determined according to the current driving state of the vehicle, the average demand driving power of the vehicle and the SOC, and the target power generation power of the range extender of the vehicle is determined, comprising:

[0073] In the case that the SOC is less than a preset first threshold value or the average demand driving power is greater than a preset second threshold value, the maximum power generation work of the range extender of the vehicle is determined as the target power generation power.

[0074] In the case that the SOC is not less than the preset first threshold value and the average demand driving power is not greater than the preset second threshold value, the optimal power generation power points corresponding to the current driving state of the vehicle are determined, and the target power generation power matched with the average demand driving power and the SOC is determined from the optimal power generation power points, and the target power generation power is not less than the average demand driving power.

[0075] In the embodiment, in the case that the SOC is less than the first threshold value, it means that the remaining power of the battery is small, and the continuous driving demand of the vehicle cannot be met. At this time, the range extender needs to generate power at the maximum power to ensure that the vehicle has enough power output, avoid power interruption caused by insufficient power, and avoid excessive discharge of the battery which will damage the health state of the battery and reduce the service life of the battery.

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

[0077] In the embodiment, in the case that the SOC is not less than the first threshold value and the average demand driving power is not greater than the second threshold value, the power generation power points meeting the current average demand driving power and the SOC state can be screened from the optimal power generation power points corresponding to the driving state.

[0078] In some embodiments, the basic power generation of the range extender can be preliminarily calculated based on the average demand driving power and the current driving state, and the basic power generation is 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 is increased when the SOC is too low, and the power generation is reduced when the SOC is too high.

[0079] S103: Control the range extender of the vehicle to operate based on the target power generation.

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

[0081] In some embodiments, the target power generation can be used to query a preset range extender characteristic curve to determine the speed and load parameters corresponding to the target power generation, and 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 range extender to operate.

[0082] In an embodiment provided in the present application, based on the above scheme, the process of obtaining the average demand driving power of the vehicle in a preset time period can include:

[0083] The demand driving power of the vehicle at each collection time point in the preset time period is obtained, and the demand driving power is determined based on driving operation information and driving motor torque;

[0084] The average demand driving power of the preset time period is calculated according to the demand driving power of each collection time point in the preset time period.

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

[0086] For each collection time point, the demand driving power at the time point is calculated according to the driving operation information and the driving motor torque.

[0087] The demand driving power data of all collection time points in the preset time period is collected. Then, the average value is calculated using the following formula:

[0088] Average demand driving power = (sum of demand driving powers of all collection time points) / collection times

[0089] Alternatively, if the data is continuous, the average value can also be calculated by using the method of integral divided by time.

[0090] In an embodiment provided by the present application, based on the above scheme, the process of acquiring the current driving state of the vehicle comprises:

[0091] detecting the current driving condition of the vehicle, the driving condition comprising a slope and a load;

[0092] if the slope of the vehicle is greater than the slope threshold value and the load is greater than the load threshold value, 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 value and the load is greater than the load threshold value, 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 value and the load is less than the load threshold value, determining that the current driving state of the vehicle is an empty load uphill state;

[0095] if the slope of the vehicle is less than the slope threshold value and the load is less than the slope threshold value, determining that the current driving state of the vehicle is an empty load downhill state.

[0096] In an embodiment provided by the present application, the vehicle can be a range-extended mine truck, and the process of determining the power demand of the range extender of the vehicle is as shown in Figure 3 The vehicle control unit VCU has multiple monitoring functions, which can monitor the vehicle speed, output shaft speed, driver operation related information (such as throttle, brake, etc.), power battery related information (including real-time power and current and their limits, SOC), driving motor related information (such as real-time torque, temperature, fault), range extender 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 calculates the current demand driving power according to the driver's intention torque, and calculates the average demand driving power every certain time. At the same time, the VCU determines the current driving state of the vehicle, such as heavy load uphill, heavy load downhill, empty load uphill or empty load downhill, by means of the information from the load sensor and the slope sensor, and then selects the corresponding demand power MAP (demand power configuration file) according to the driving state of the vehicle.

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

[0099] In different SOC ranges and driving power demand situations, the power generation mode is different. In the low SOC range, the maximum power generation is generated regardless of the driving power demand, and the forced power preservation mode is entered. In the large driving power demand, the maximum power generation is also generated, and the large power preservation mode is entered. When the SOC is high, the SOC at which the power generation is stopped is determined according to the size of the demand driving power. When the SOC is moderate, the demand power generation is calculated according to the demand driving power and the motor system efficiency, to ensure that the demand power generation is greater than the demand driving power. The demand power MAPs in the four vehicle states of heavy load uphill, heavy load downhill, empty load uphill and empty load downhill are calibrated according to the above principles and combined with the actual demand of the mine area, so as to determine the power generation power distribution logic, and the power generation power distribution strategy is as shown in Figure 4 .

[0100] In the embodiment, the matching of the power generation power point follows the principle of optimal efficiency and optimal fuel consumption. This process needs to comprehensively consider the engine universal characteristic curve and the motor system efficiency MAP, so as to ensure that the optimal power generation state is achieved when working at each power generation power point. Subsequently, the VCU can accurately determine the current demand power generation according to the current SOC (state of charge), the average driving demand power and the vehicle running state. In this way, the VCU can coordinate the working state of each component to realize the efficient operation of the entire power system. The vehicle control unit VCU undertakes an important task in the vehicle running process. On the one hand, it can determine the running state of the vehicle in real time, such as heavy load uphill, heavy load downhill, empty load uphill or empty load downhill, and then select the most suitable and economical power generation point. On the other hand, the demand power can be obtained by the demand power generation MAP, which expands the calibration space and helps to improve the working condition adaptability.

[0101] By applying the method provided in the embodiment, the current running state of the vehicle is first accurately determined, which is the basis for subsequent decision-making. Then, different demand power generation MAPs are switched according to the vehicle running state. The demand for power generation power of the vehicle is different in different running states, and the MAPs can be accurately adapted by switching. Finally, the important significance of the demand power generation MAP is that it can meet the selection of appropriate power generation power when the vehicle is in the current running state, regardless of the driving power demand and different SOC (state of charge), so as to ensure the efficient and stable operation of the vehicle power system.

[0102] Corresponding to the method described in Figure 1 , the embodiment of the application further provides a vehicle power generation power control device for implementing the method in Figure 1 , and a structure diagram thereof is as shown in Figure 5 , and specifically includes:

[0103] The acquisition unit 501 is configured to acquire an average demand driving power of the vehicle in a preset time period, a current driving state of the vehicle, and a state of charge (SOC) of a battery of the vehicle during operation of the vehicle.

[0104] The determination unit 502 is configured to determine a target power generation of a range extender of the vehicle according to the current driving state of the vehicle, the average demand driving power of the vehicle, and the SOC.

[0105] The control unit 503 is configured to control the range extender of the vehicle to operate 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 comprises:

[0107] The first acquisition subunit is configured to acquire a demand driving power of the vehicle at each collection time point in the preset time period, and the demand driving power is determined based on driving operation information and a driving motor torque.

[0108] The calculation subunit is configured to calculate the average demand driving power of the preset time period according to the demand driving power of the vehicle at each collection time point in the preset time period.

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

[0110] The second acquisition subunit is configured to acquire a demand power generation configuration file corresponding to the current driving state of the vehicle.

[0111] The query subunit is configured to query the demand power generation configuration file according to the average demand driving power of the vehicle and the SOC, and obtain the target power generation of the range extender of the vehicle.

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

[0113] The first determination subunit is configured to determine the maximum power generation of the range extender of the vehicle as the target power generation when the SOC is less than a preset first threshold value or the average demand driving power is greater than a preset second threshold value.

[0114] a second determining sub-unit, configured to determine each optimal power generation point corresponding to the current driving state of the vehicle, when the SOC is not less than a preset first threshold and the average demand driving power is not greater than a preset second threshold; and determine a target power generation point from the optimal power generation points, which matches the average demand driving power and the SOC, and the target power generation point is not less than the average demand driving power.

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

[0116] a detecting sub-unit, configured to detect the current driving condition of the vehicle, wherein the driving condition comprises a slope and a load;

[0117] a third determining sub-unit, 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 determining sub-unit, 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 the slope threshold and the load is greater than the load threshold;

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

[0120] a sixth determining sub-unit, configured to determine that the current driving state of the vehicle is an empty-load downhill state, if the slope of the vehicle is less than the 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 embodiments of the present application are the same as those of the vehicle power generation control method disclosed in the embodiments of the present application, and can be referred to the corresponding parts of the vehicle power generation control method provided in the embodiments of the present application, which will not be repeated here.

[0122] The embodiments of the present application further provide a storage medium, which comprises stored instructions, wherein when the instructions are executed, the device where the storage medium is located performs the vehicle power generation control method.

[0123] The embodiments of the present application further provide an electronic device, a structure diagram of which is as shown in Figure 6As shown, the apparatus 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 configured to be executed by the one or more processors 603 to perform the following operations:

[0124] During the operation of the vehicle, the average demand driving power of the vehicle in a preset time period, the current driving state of the vehicle, and the state of charge SOC of the vehicle battery are acquired;

[0125] According to the current driving state of the vehicle, the average demand driving power of the vehicle, and the SOC, the target power generation power of the range extender of the vehicle is determined;

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

[0127] It should be noted that each of the embodiments in the present specification adopts a progressive manner for description, and each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment 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 part can be referred to the part of the method embodiment.

[0128] Finally, it should also be noted that in this paper, the relationship terms such as first and second 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 the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0129] For the convenience of description, the above apparatus is described as various units respectively described in functions. Of course, in the implementation of the present application, the functions of each unit can be implemented in the same or more software and / or hardware.

[0130] Those skilled in the art can clearly understand the application by the description of the above embodiments that the application can be implemented by means of software and the necessary universal hardware platform. Based on such an understanding, the technical solutions of the application can be embodied in the form of a software product in essence or in the part of the prior art that makes a contribution. The computer software product can be stored in a storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the method described in each embodiment or some part of the embodiments of the application.

[0131] The above describes in detail the vehicle power generation control method provided by the application, and the principle and implementation of the application are described by applying specific examples. The above embodiment is only used to help understand the method and the core idea of the application. Meanwhile, for those skilled in the art, the specific implementation and application range will be changed according to the idea of the application. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A method for controlling the power generation of a vehicle, characterized in that, include: During vehicle operation, the average required driving power of the vehicle within a preset time period, the current driving status of the vehicle, and the state of charge (SOC) of the vehicle battery are obtained. The target power generation of the vehicle's range extender is determined based on the vehicle's current driving status, the vehicle's average required driving power, and the SOC. The vehicle's range extender is controlled based on the target power generation capacity. Determining the target power generation of the vehicle's range extender based on the vehicle's current driving status, the vehicle's average driving power demand, and the State of Charge (SOC) includes: If the SOC is less than a preset first threshold, or the average demand drive power is greater than a preset second threshold, the maximum power generation of the vehicle's range extender is determined as the target power generation. When the State of Charge (SOC) is not less than a preset first threshold and the average demand drive power is not greater than a preset second threshold, determine each optimal power generation point corresponding to the current driving state of the vehicle; among each of the optimal power generation points, determine a target power generation power that matches the average demand drive power and the SOC, wherein the target power generation power is not less than the average demand drive power.

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

3. The method according to claim 1, characterized in that, Determining the target power generation of the vehicle's range extender based on the vehicle's current driving status, the vehicle's average driving power demand, and the State of Charge (SOC) includes: Obtain the power generation configuration file corresponding to the current driving status of the vehicle; The target power generation of the vehicle's range extender is obtained by querying the required power generation profile based on the vehicle's average required drive power and the SOC.

4. The method according to claim 1, characterized in that, The process of obtaining the current driving status of the vehicle includes: The current driving conditions of the vehicle are detected, including gradient and load. If the gradient of the vehicle is greater than the gradient threshold and the load is greater than the load threshold, then the current driving state of the vehicle is determined to be a heavy-load uphill state. If the gradient of the vehicle is less than the gradient threshold and the load is greater than the load threshold, then the current driving state of the vehicle is determined to be a heavy-load downhill state. If the gradient of the vehicle is greater than the gradient threshold and the load is less than the load threshold, then the current driving state of the vehicle is determined to be an unloaded uphill state. If the gradient of the vehicle is less than the gradient threshold and the load is less than the gradient threshold, then the current driving state of the vehicle is determined to be an unloaded downhill state.

5. A vehicle power generation control device, characterized in that, include: The acquisition unit is used to acquire, during vehicle operation, the average required driving power of the vehicle within a preset time period, the current driving status of the vehicle, and the state of charge (SOC) of the vehicle battery. The determining unit is used to determine the target power generation of the vehicle's range extender based on the vehicle's current driving state, the vehicle's average required drive power, and the SOC. A control unit for controlling the operation of the vehicle's range extender based on the target power generation; The determining unit includes: The first determining subunit is used to determine the maximum power generation of the vehicle's range extender as the target power generation when the SOC is less than a preset first threshold or the average demand drive power is greater than a preset second threshold. The second determining subunit is used to determine each optimal power generation point corresponding to the current driving state of the vehicle when the SOC is not less than a preset first threshold and the average demand driving power is not greater than a preset second threshold; and to determine a target power generation power that matches the average demand driving power and the SOC among each of the optimal power generation points, wherein the target power generation power is not less than the average demand driving power.

6. The apparatus according to claim 5, characterized in that, The acquisition unit includes: The first acquisition subunit is used to acquire the required driving power of the vehicle at each acquisition time point within a preset time period; the required driving power is determined based on driving operation information and drive motor torque. The calculation subunit is used to calculate the average demand drive power for the preset time period based on the demand drive power at each collection time point within the preset time period.

7. The apparatus according to claim 5, characterized in that, The determining unit includes: The second acquisition subunit is used to acquire the required power generation configuration file corresponding to the current driving state of the vehicle. The query subunit is used to query the demand power generation configuration file based on the average demand drive power of the vehicle and the SOC to obtain the target power generation of the vehicle's range extender.

8. The apparatus according to claim 5, characterized in that, The acquisition unit includes: The detection subunit is used to detect the current driving conditions of the vehicle, including slope and load. The third determining subunit is used 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 the slope threshold and the load is greater than the load threshold. The fourth determining subunit is used 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 the slope threshold and the load is greater than the load threshold. The fifth determining subunit is used to determine that the current driving state of the vehicle is an unloaded uphill state if the slope of the vehicle is greater than the slope threshold and the load is less than the load threshold. The sixth determining subunit is used to determine that the current driving state of the vehicle is an unloaded downhill state if the gradient of the vehicle is less than the gradient threshold and the load is less than the gradient threshold.

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