Power generation control method and system of range extending system and range extending vehicle

Abstract

The invention discloses a power generation control method and system of a range extending system and a range extending vehicle. The power generation control method of the range extending system comprises the steps of obtaining required power generation power; engine setting parameters and generator setting parameters are obtained according to the required generated power, the engine setting parameters comprise engine setting rotating speed or engine setting torque, and the generator setting parameters comprise generator setting torque or generator setting rotating speed; acquiring actual power generation power; obtaining a power difference value according to the required generation power and the actual generation power, and storing the power difference value to form a power difference value group; obtaining a power mean value according to the power difference value group; integral adjustment triggering information is output according to the power mean value; and outputting an engine target rotating speed and a generator target torque according to the integral adjustment trigger information, the power mean value, the required generated power, the engine set parameters and the generator set parameters so as to realize power generation control. The universality and robustness of power generation control are improved, and the demand power response speed is increased.

Description

TECHNICAL FIELD

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

[0002] In the field of vehicles, efficient, energy-saving and environmentally friendly pure electric vehicles have become one of the development trends in the vehicle industry. However, the short driving range of pure electric vehicles due to the small energy density and high cost of batteries has become an important shortcoming in the development of pure electric vehicles. Therefore, the development of range extended electric vehicles has attracted more and more attention in the industry.

[0003] The current power generation control of the range extended electric vehicle mainly adopts a lookup table or PID regulation method based on the required power generation power to adjust the set speed or torque of the generator and the engine to reduce the deviation between the output power generation power and the required power generation power. However, the existing control methods cannot achieve optimal control of the system. SUMMARY

[0004] The present application provides a power generation control method and system of a range extended system and a range extended vehicle to improve the universality and robustness of the power generation control of the range extended system, improve the demand power response speed and reduce the deviation.

[0005] In a first aspect, the present application provides a power generation control method of a range extended system, comprising:

[0006] obtaining a required power generation power;

[0007] obtaining engine set parameters and generator set parameters according to the required power generation power, the engine set parameters including an engine set speed or an engine set torque, and the generator set parameters including a generator set torque or a generator set speed;

[0008] obtaining an actual power generation power;

[0009] obtaining a power difference value according to the required power generation power and the actual power generation power and storing the power difference value to form a power difference value group;

[0010] obtaining a power mean value according to the power difference value group;

[0011] outputting an integral adjustment trigger information according to the power mean value;

[0012] outputting an engine target speed and a generator target torque according to the integral adjustment trigger information, the power mean value, the required power generation power, the engine set parameters and the generator set parameters to realize power generation control.

[0013] Optionally, the engine setting parameters and the generator setting parameters are obtained according to the required power generation power before the step of obtaining the engine setting parameters and the generator setting parameters according to the required power generation power.

[0014] The engine preset MAP graph and the generator preset MAP graph are obtained.

[0015] The engine setting parameters and the generator setting parameters are obtained according to the required power generation power.

[0016] The engine setting parameters are obtained according to the required power generation power and the engine preset MAP graph, and the generator setting parameters are obtained according to the required power generation power and the generator preset MAP graph.

[0017] Optionally, the power difference value is obtained according to the required power generation power and the actual power generation power, including:

[0018] The first power value is obtained by difference operation according to the required power generation power and the actual power generation power.

[0019] The power difference value is obtained by absolute value operation on the first power value.

[0020] Optionally, the integral adjustment trigger information is output according to the power average value, including:

[0021] The first power threshold value is obtained.

[0022] When the power average value is greater than the first power threshold value, the integral adjustment trigger information is output.

[0023] Optionally, the engine target speed and the generator target torque are output according to the integral adjustment trigger information, the power average value, the required power generation power, the engine setting parameters and the generator setting parameters, including:

[0024] The power generation power deviation value is obtained according to the power average value and the required power generation power.

[0025] The engine setting parameters and the generator setting parameters are adjusted according to the integral adjustment trigger information and the power generation power deviation value, so as to output the engine target speed and the generator target torque.

[0026] Optionally, the method further comprises:

[0027] The accessory working state in the range extending system is obtained according to the power difference value.

[0028] The engine preset MAP graph and the generator preset MAP graph are corrected based on the accessory working state.

[0029] Optionally, the accessory working state in the range extending system is obtained according to the power difference value, including:

[0030] obtaining a second power threshold value;

[0031] obtaining an accessory working state in the range extending system when the power difference value is greater than the second power threshold value.

[0032] Optionally, before correcting the engine preset MAP and the generator preset MAP based on the accessory working state, the method further comprises:

[0033] obtaining key power-off trigger information.

[0034] In a second aspect, the present application provides a power generation control system of a range extending system, and the power generation control method of the range extending system in any one of the first aspect is executed by the power generation control system of the range extending system, and the power generation control system of the range extending system comprises:

[0035] a demand power generation power obtaining module, configured to obtain a demand power generation power;

[0036] an engine setting parameter and generator setting parameter obtaining module, configured to obtain an engine setting parameter and a generator setting parameter according to the demand power generation power, wherein the engine setting parameter comprises an engine setting speed or an engine setting torque, and the generator setting parameter comprises a generator setting torque or a generator setting speed;

[0037] an actual power generation power obtaining module, configured to obtain an actual power generation power;

[0038] a power difference value obtaining module, configured to obtain a power difference value according to the demand power generation power and the actual power generation power and store the power difference value to form a power difference value group.

[0039] S407, obtaining a power average value according to the power difference value group

[0040] a power average value obtaining module, configured to obtain a power average value according to a plurality of the power difference values;

[0041] an integral adjustment trigger information output module, configured to output an integral adjustment trigger information according to the power average value;

[0042] an engine target speed and generator target torque output module, configured to output an engine target speed and a generator target torque according to the integral adjustment trigger information, the power average value, the demand power generation power, the engine setting parameter and the generator setting parameter, so as to realize power generation control.

[0043] In a third aspect, the present application provides a range extending vehicle, and the range extending vehicle comprises a range extending system and a controller, wherein the range extending system is connected with the controller.

[0044] The controller is configured to perform the power generation control method of the range extending system according to any one of the first aspect.

[0045] The technical scheme of the embodiment of the present application provides a power generation control method of a range extending system, including: obtaining a required power generation power; obtaining engine setting parameters and generator setting parameters according to the required power generation power, the engine setting parameters including an engine setting speed or an engine setting torque, and the generator setting parameters including a generator setting torque or a generator setting speed; obtaining an actual power generation power; obtaining a power difference value according to the required power generation power and the actual power generation power and storing the power difference value to form a power difference value group; obtaining a power average value according to the power difference value group; outputting an integral adjustment trigger information according to the power average value; and outputting an engine target speed and a generator target torque according to the integral adjustment trigger information, the power average value, the required power generation power, the engine setting parameters and the generator setting parameters, so as to realize power generation control. The power generation control of the range extending system is improved in universality and robustness, the response speed of the required power is improved, the deviation is reduced, and the debugging time is saved.

[0046] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0048] Figure 1 A flowchart of a power generation control method of a range extending system provided by the embodiment of the present application is shown in FIG. 1;

[0049] Figure 2 A flowchart of another power generation control method of a range extending system provided by the embodiment of the present application is shown in FIG. 2;

[0050] Figure 3 A flowchart of another power generation control method of a range extending system provided by the embodiment of the present application is shown in FIG. 3;

[0051] Figure 4 A flowchart of another power generation control method of a range extending system provided by the embodiment of the present application is shown in FIG. 4;

[0052] Figure 5 A flowchart of another power generation control method of a range extending system provided by the embodiment of the present application is shown in FIG. 5;

[0053] Figure 6A flow chart of another power generation control method of the range extending system according to an embodiment of the present application is provided.

[0054] Figure 7 A flow chart of another power generation control method of the range extending system according to an embodiment of the present application is provided.

[0055] Figure 8 A flow chart of another power generation control method of the range extending system according to an embodiment of the present application is provided.

[0056] Figure 9 A structural schematic diagram of a power generation control system of the range extending system according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0057] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without creative labor should belong to the protection scope of the present application.

[0058] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0059] Figure 1 A flow chart of a power generation control method of the range extending system according to an embodiment of the present application is provided. The embodiment can be applicable to the power generation control of the range extending system. The method can be executed by the power generation control system of the range extending system. The power generation control system of the range extending system can be realized in the form of hardware and / or software. The power generation control system of the range extending system can be configured in the range extending vehicle. As shown in the figure, the method comprises: Figure 1

[0060] S101, acquiring the required power generation.

[0061] ​The range extending system at least includes an engine and a generator, and can provide power or charge for the vehicle through other energy sources when the battery power of the electric vehicle is insufficient. The demand power generation power is the real-time power generation power required by the range extending system to meet the driving and auxiliary equipment power demand of the vehicle.

[0062] In S102, the engine setting parameter and the generator setting parameter are obtained according to the demand power generation power. The engine setting parameter includes the engine setting speed or the engine setting torque, and the generator setting parameter includes the generator setting torque or the generator setting speed.

[0063] The engine setting parameter and the generator setting parameter can be obtained by looking up a table according to the demand power generation power. The engine setting parameter and the generator setting parameter can be selected according to the control mode of the engine and the control mode of the generator. When the engine is controlled by speed, the engine setting parameter is the engine setting speed; when the engine is controlled by torque, the engine setting parameter is the engine setting torque. When the generator is controlled by speed, the generator setting parameter is the generator setting speed; when the generator is controlled by torque, the engine setting parameter is the generator setting torque.

[0064] In S103, the actual power generation power is obtained.

[0065] The actual power generation power output by the range extending system can be collected in real time by using a sensor, so as to accurately calculate and dynamically match the demand power generation power, and ensure the vehicle energy efficiency and user driving experience.

[0066] In S104, the power difference value is obtained according to the demand power generation power and the actual power generation power, and is stored to form a power difference value group.

[0067] The power difference value can be obtained by calculation according to the demand power generation power and the actual power generation power, so as to accurately adjust the power difference value subsequently. The collected power difference values are stored, and the number of power difference values stored in the power difference value group can be set according to actual design requirements. For example, the power difference value group includes 20 power difference values, so as to retain short-time deviation and facilitate subsequent accurate processing.

[0068] In S105, the power average value is obtained according to the power difference value group.

[0069] The power difference value group includes a plurality of power difference values. The power average value is obtained by averaging a plurality of power difference values near the current power difference value, so as to determine the deviation of the system within a preset time, and accurately filter out short-time fluctuation and correct deviation subsequently.

[0070] S106, output integral adjustment trigger information according to the power average.

[0071] Wherein, the integral adjustment trigger information is output according to the power average, the integral link is used to accurately compensate the deviation, and the response speed and stability are ensured.

[0072] S107, output engine target speed and generator target torque according to the integral adjustment trigger information, the power average, the demand power, the engine set parameter and the generator set parameter, so as to realize the power generation control.

[0073] Wherein, the integral link is started, the engine parameter and the generator parameter are adjusted according to the power average, the demand power, the engine set parameter and the generator set parameter, and the engine target speed and the generator target torque are output, so as to eliminate the deviation of the torque and the speed and realize the accurate power generation control of the range extending system.

[0074] The embodiment of the present application obtains the demand power generation; obtains the engine set parameter and the generator set parameter according to the demand power generation, the engine set parameter including the engine set speed or the engine set torque, and the generator set parameter including the generator set torque or the generator set speed; obtains the actual power generation; obtains the power difference and stores the power difference group according to the demand power generation and the actual power generation; obtains the power average according to the power difference group; outputs the integral adjustment trigger information according to the power average; and outputs the engine target speed and the generator target torque according to the integral adjustment trigger information, the power average, the demand power, the engine set parameter and the generator set parameter, so as to realize the power generation control. The universality and the robustness of the power generation control of the range extending system are improved, the demand power response speed is improved, the deviation is reduced, and the debugging time is saved.

[0075] Optionally, Figure 2 Another flow chart of the power generation control method of the range extending system provided by the embodiment of the present application is shown in the figure, and the method comprises the following steps: Figure 2 The method comprises the following steps:

[0076] S201, obtain the demand power generation.

[0077] S202, obtain the generator preset MAP graph and the engine preset MAP graph.

[0078] Wherein, the generator preset MAP graph and the engine preset MAP graph can be calibrated by the bench test and pre-stored, so as to realize the independent optimization of the engine and the generator control. The generator preset MAP graph can include the curve of the generator preset parameter related to the demand power generation, and the engine preset MAP graph can include the curve of the engine preset parameter related to the demand power generation.

[0079] S203, obtaining engine setting parameters according to the required power generation power and the engine preset MAP diagram and obtaining generator setting parameters according to the required power generation power and the generator preset MAP diagram, wherein the engine setting parameters include engine setting speed or engine setting torque, and the generator setting parameters include generator setting torque or generator setting speed.

[0080] According to the required power generation power, the engine setting parameters and the generator setting parameters can be determined, and the engine setting parameters and the generator setting parameters are obtained according to the required power generation power and the engine preset MAP diagram and the generator preset MAP diagram, respectively, so that the engine and the generator can be independently controlled, and the flexibility is improved.

[0081] S204, obtaining the actual power generation power.

[0082] S205, obtaining a power difference value according to the required power generation power and the actual power generation power and storing the power difference value to form a power difference value group.

[0083] S206, obtaining a power average value according to the power difference value group.

[0084] S207, outputting an integral adjustment trigger information according to the power average value.

[0085] S208, outputting an engine target speed and a generator target torque according to the integral adjustment trigger information, the power average value, the required power generation power, the engine setting parameters and the generator setting parameters, so as to realize power generation control.

[0086] According to the required power generation power, the engine preset MAP diagram and the generator preset MAP diagram, the engine setting parameters are obtained according to the required power generation power and the engine preset MAP diagram, and the generator setting parameters are obtained according to the required power generation power and the generator preset MAP diagram, wherein the engine setting parameters include engine setting speed or engine setting torque, and the generator setting parameters include generator setting torque or generator setting speed, so that the engine setting parameters and the generator setting parameters can be independently obtained, the engine and the generator can be independently controlled, and the adjustment precision is improved.

[0087] Optionally, Figure 3 Another power generation control method of an extended range system is provided in the embodiment of the application, and a flowchart of the method is shown in FIG. 6. Figure 3 The method comprises the following steps.

[0088] S301, obtaining the required power generation power.

[0089] S302, obtaining the engine preset MAP diagram and the generator preset MAP diagram.

[0090] S303, obtaining engine setting parameters according to the required power generation and the engine preset MAP, and obtaining generator setting parameters according to the required power generation and the generator preset MAP, wherein the engine setting parameters include engine setting speed or engine setting torque, and the generator setting parameters include generator setting torque or generator setting speed.

[0091] S304, obtaining the actual power generation.

[0092] S305, obtaining a first power value by performing a difference operation on the required power generation and the actual power generation.

[0093] S306, obtaining a power difference value by performing an absolute value operation on the first power value and storing the power difference value to form a power difference value group.

[0094] The first power value is obtained by performing a difference operation on the required power generation and the actual power generation, and the first power value can be positive or negative due to the required power generation being greater than the actual power generation or the required power generation being less than the actual power generation. Therefore, an absolute value operation is performed on the first power value to obtain the power difference value. Each power difference value in the power difference value group is positive.

[0095] S307, obtaining a power average value according to the power difference value group.

[0096] S308, outputting an integral adjustment trigger information according to the power average value.

[0097] S309, outputting an engine target speed and a generator target torque according to the integral adjustment trigger information, the power average value, the required power generation, the engine setting parameters and the generator setting parameters, so as to realize power generation control.

[0098] The embodiment of the present application realizes accurate acquisition of the power difference value by obtaining a first power value by performing a difference operation on the required power generation and the actual power generation, obtaining a power difference value by performing an absolute value operation on the first power value and storing the power difference value to form a power difference value group, so as to accurately compensate for the deviation according to the power difference value and the power difference value group, and ensure accurate power generation control of the range extending system.

[0099] Optionally, Figure 4 Another flowchart of a power generation control method of a range extending system provided by the embodiment of the present application is shown in FIG. 4, and the method comprises the following steps. Figure 4

[0100] S401, obtaining the required power generation.

[0101] S402, obtaining the generator preset MAP and the engine preset MAP.

[0102] ​S403, obtaining engine setting parameters according to the required power generation power and engine preset MAP, and obtaining generator setting parameters according to the required power generation power and generator preset MAP, wherein the engine setting parameters include engine setting speed or engine setting torque, and the generator setting parameters include generator setting torque or generator setting speed.

[0103] S404, obtaining the actual power generation power.

[0104] S405, obtaining a first power value by performing difference operation on the required power generation power and the actual power generation power.

[0105] S406, obtaining a power difference value by performing absolute value operation on the first power value and storing the power difference value to form a power difference group.

[0106] S407, obtaining a power average value according to the power difference group.

[0107] S408, obtaining a first power threshold value.

[0108] The first power threshold value can be set according to actual design requirements, so as to determine the starting time of the integral link according to the first power threshold value and the power average value.

[0109] S409, outputting integral adjustment trigger information when the power average value is greater than the first power threshold value.

[0110] When the power average value is greater than the power threshold value, it is considered that there is a persistent deviation between the actual power and the required power at this time, and therefore the integral adjustment trigger information needs to be outputted to start integral adjustment, so as to eliminate the steady-state error in the system, ensure that the actual power generation power accurately tracks the required power generation power, and avoid excessive response to high-frequency disturbance and ensure control stability.

[0111] In addition, when the power average value is less than or equal to the first power threshold value, integral adjustment is not triggered at this time, and the step of obtaining a first power value by performing difference operation on the required power generation power and the actual power generation power can be repeatedly executed.

[0112] S410, outputting engine target speed and generator target torque according to the integral adjustment trigger information, the power average value, the required power generation power, the engine setting parameters and the generator setting parameters, so as to realize power generation control.

[0113] The embodiment of the application obtains a power average value according to a power difference group, obtains a first power threshold value, and outputs integral adjustment trigger information when the power average value is greater than the first power threshold value, so that the integral adjustment trigger information is outputted in time when there is a persistent deviation between the actual power and the required power, the integral adjustment is triggered, the steady-state error of the system is eliminated, the actual power generation power accurately tracks the required power, and control accuracy and stability are ensured.

[0114] Optionally, Figure 5 Another flowchart of the power generation control method of the extended range system is provided for the embodiments of the present application, as shown in Figure 5 The method comprises the following steps:

[0115] S501, obtaining the required power generation power.

[0116] S502, obtaining the preset MAP diagram of the generator and the preset MAP diagram of the engine.

[0117] S503, obtaining the engine set parameters according to the required power generation power and the preset MAP diagram of the engine, and obtaining the generator set parameters according to the required power generation power and the preset MAP diagram of the generator, the engine set parameters including the engine set speed or the engine set torque, and the generator set parameters including the generator set torque or the generator set speed.

[0118] S504, obtaining the actual power generation power.

[0119] S505, performing difference operation on the required power generation power and the actual power generation power to obtain a first power value.

[0120] S506, performing absolute value operation on the first power value to obtain a power difference value and storing the power difference value to form a power difference value group.

[0121] S507, obtaining a power average value according to the power difference value group.

[0122] S508, obtaining a first power threshold value.

[0123] S509, outputting an integral adjustment trigger information when the power average value is greater than the first power threshold value.

[0124] S510, obtaining a power generation power deviation value according to the power average value and the required power generation power.

[0125] The power generation power deviation value can be obtained by difference calculation according to the power average value and the required power generation power, so as to eliminate the deviation according to the power generation power deviation value in the subsequent process.

[0126] S511, adjusting the engine set parameters and the generator set parameters according to the integral adjustment trigger information and the power generation power deviation value to output the engine target speed and the generator target torque, so as to realize the power generation control.

[0127] After the integral adjustment trigger, the engine target speed and the generator target torque can be obtained by adjusting the engine set parameters and the generator set parameters according to the power generation power deviation value, so as to eliminate the deviation between the actual power and the required power.

[0128] The embodiment of the present application obtains a power deviation value according to the power average and the demand power generation power; adjusts the engine setting parameter and the generator setting parameter according to the integral adjustment trigger information and the power deviation value to output the engine target speed and the generator target torque, realizes the elimination of the system deviation by the integral adjustment, and improves the generality and robustness of the power generation control of the range extending system, improves the demand power response speed, and reduces the deviation.

[0129] Optionally, Figure 6 Another flowchart of the power generation control method of the range extending system provided by the embodiment of the present application is shown in the figure, and the method comprises the following steps. Figure 6

[0130] S601, obtaining the demand power generation power.

[0131] S602, obtaining the generator preset MAP graph and the engine preset MAP graph.

[0132] S603, obtaining the engine setting parameter according to the demand power generation power and the engine preset MAP graph and obtaining the generator setting parameter according to the demand power generation power and the generator preset MAP graph, the engine setting parameter comprising the engine setting speed or the engine setting torque, and the generator setting parameter comprising the generator setting torque or the generator setting speed.

[0133] S604, obtaining the actual power generation power.

[0134] S605, performing a difference operation on the demand power generation power and the actual power generation power to obtain a first power value.

[0135] S606, performing an absolute value operation on the first power value to obtain a power difference value and storing the power difference value to form a power difference value group.

[0136] S607, obtaining the power average according to the power difference value group.

[0137] S608, obtaining a first power threshold value.

[0138] S609, outputting the integral adjustment trigger information when the power average is greater than the first power threshold value.

[0139] S610, obtaining the power deviation value according to the power average and the demand power generation power.

[0140] S611, adjusting the engine setting parameter and the generator setting parameter according to the integral adjustment trigger information and the power deviation value to output the engine target speed and the generator target torque, so as to realize the power generation control.

[0141] S612, obtaining the accessory working state in the range extending system according to the power difference value.

[0142] ​Wherein, in the actual application of the range extender, the power of the accessories in the range extending system, such as the oil pump, air conditioner, power output device and the like, will fluctuate, and then the actual output power will fluctuate, if the integral adjustment repeatedly follows the fluctuation, the range extending system will be in a state of out of control, therefore, the fluctuation needs to be hysteresis processed to avoid the over-response of the controller to the slight fluctuation, thereby improving the system stability. The accessory working state in the range extending system is obtained according to the power difference, the accessory load estimation deviation is avoided to cause power generation deficiency or excess, and the reliability of the control is improved.

[0143] S613, correcting the engine preset MAP graph and the generator preset MAP graph based on the accessory working state.

[0144] Wherein, the engine preset MAP graph and the generator preset MAP graph are calibrated based on the accessory working state, so that in the next driving cycle, the power generation control is carried out based on the corrected engine preset MAP graph and the generator preset MAP graph, the updating and optimization of the engine preset MAP graph and the generator preset MAP graph are realized in the running process of the range extending system, and the control precision is improved.

[0145] The embodiment of the application realizes the revision of the engine preset MAP graph and the generator preset MAP graph by obtaining the accessory working state in the range extending system according to the power difference and correcting the engine preset MAP graph and the generator preset MAP graph based on the accessory working state, and the accuracy of the power generation control of the range extending system is ensured.

[0146] Optionally, Figure 7 Another flowchart of the power generation control method of the range extending system provided by the embodiment of the application is shown as Figure 7 The method comprises the following steps:

[0147] S701, obtaining the required power generation.

[0148] S702, obtaining the generator preset MAP graph and the engine preset MAP graph.

[0149] S703, obtaining the engine set parameters according to the required power generation and the engine preset MAP graph and obtaining the generator set parameters according to the required power generation and the generator preset MAP graph, the engine set parameters comprising the engine set speed or the engine set torque, and the generator set parameters comprising the generator set torque or the generator set speed.

[0150] S704, obtaining the actual power generation.

[0151] S705, obtaining the first power value by difference operation according to the required power generation and the actual power generation.

[0152] S706, absolute value operation is performed on the first power value to obtain a power difference value and the power difference value is stored to form a power difference value group.

[0153] S707, a power average value is obtained according to the power difference value group.

[0154] S708, a first power threshold value is obtained.

[0155] S709, when the power average value is greater than the first power threshold value, integral adjustment trigger information is output.

[0156] S710, a power generation deviation value is obtained according to the power average value and a required power generation value.

[0157] S711, engine setting parameters and generator setting parameters are adjusted according to the integral adjustment trigger information and the power generation deviation value, so that an engine target speed and a generator target torque are output, so as to realize power generation control.

[0158] S712, a second power threshold value is obtained.

[0159] The second power threshold value can be set according to actual design requirements, but the second power threshold value needs to be greater than the first power threshold value.

[0160] S713, when the power difference value is greater than the second power threshold value, an accessory working state in the range extending system is obtained.

[0161] When the power difference value is greater than the second power threshold value, it is considered that the accessory working state in the range extending system causes the deviation, so the accessory working state in the range extending system needs to be obtained to ensure the effect of power generation control. The running state based on the accessory is realized, the calibration value of the table is dynamically corrected, the integral time is reduced, and the required power is responded more timely.

[0162] S714, the engine preset MAP graph and the generator preset MAP graph are corrected based on the accessory working state.

[0163] The embodiment of the application obtains a power generation deviation value according to a power average value and a required power generation value, obtains a second power threshold value, obtains an accessory working state in a range extending system when a power difference value is greater than the second power threshold value, and corrects an engine preset MAP graph and a generator preset MAP graph based on the accessory working state, so as to reduce the integral time, respond to the required power more timely, and realize power generation control on the basis of the corrected engine preset MAP graph and the generator preset MAP graph in the next driving cycle, so as to ensure the accuracy of power generation control.

[0164] Optionally, Figure 8 Another flowchart of a power generation control method of a range extending system provided by the embodiment of the application is shown in FIG. 6, and the method comprises the following steps. Figure 8 ​

[0165] S801, obtaining a demand power generation power.

[0166] S802, obtaining a generator preset map and an engine preset map.

[0167] S803, obtaining an engine setting parameter according to the demand power generation power and the engine preset map and obtaining a generator setting parameter according to the demand power generation power and the generator preset map, the engine setting parameter including an engine setting speed or an engine setting torque, and the generator setting parameter including a generator setting torque or a generator setting speed.

[0168] S804, obtaining an actual power generation power.

[0169] S805, performing a difference operation on the demand power generation power and the actual power generation power to obtain a first power value.

[0170] S806, performing an absolute value operation on the first power value to obtain a power difference value and storing the power difference value to form a power difference group.

[0171] S807, obtaining a power average value according to the power difference group.

[0172] S808, obtaining a first power threshold value.

[0173] S809, outputting an integral adjustment trigger information when the power average value is greater than the first power threshold value.

[0174] S810, obtaining a power generation power deviation value according to the power average value and the demand power generation power.

[0175] S811, adjusting the engine setting parameter and the generator setting parameter according to the integral adjustment trigger information and the power generation power deviation value to output an engine target speed and a generator target torque.

[0176] S812, obtaining a second power threshold value.

[0177] S813, obtaining an accessory working state in a range extending system when the power difference value is greater than the second power threshold value.

[0178] S814, obtaining a key power-off trigger information.

[0179] S815, correcting the engine preset map and the generator preset map based on the key power-off trigger information and the accessory working state.

[0180] Wherein, after obtaining the accessory working state, the key power-off trigger information can be obtained, and the engine preset MAP and the generator preset MAP can be corrected based on the accessory working state after the key is powered off, so that the range extending system is continuously optimized, and the debugging time is saved.

[0181] The embodiment of the application realizes dynamic correction of the engine preset MAP and the generator preset MAP, realizes calibration-free, saves debugging time, and ensures the power generation control effect by obtaining the accessory working state in the range extending system when the power difference is greater than the second power threshold, obtaining the key power-off trigger information, and correcting the engine preset MAP and the generator preset MAP based on the key power-off trigger information and the accessory working state.

[0182] Based on the same inventive concept, the embodiment of the application also provides a power generation control system of a range extending system, Figure 9 A structural schematic diagram of the power generation control system of the range extending system provided by the embodiment of the application is shown in the figure, and the power generation control method of the range extending system is executed by the power generation control system of the range extending system, the power generation control system of the range extending system comprises: Figure 9

[0183] The demand power generation power acquisition module 101 is used to acquire the demand power generation power.

[0184] The engine and generator setting parameter acquisition module 102 is used to acquire the engine and generator setting parameters according to the demand power generation power, the engine setting parameters including the engine setting speed or the engine setting torque, and the generator setting parameters including the generator setting torque or the generator setting speed.

[0185] The actual power generation power acquisition module 103 is used to acquire the actual power generation power.

[0186] The power difference acquisition module 104 is used to acquire the power difference according to the demand power generation power and the actual power generation power and store the power difference to form a power difference group.

[0187] The power average acquisition module 105 is used to acquire the power average according to the power difference group.

[0188] The integral adjustment trigger information output module 106 is used to output the integral adjustment trigger information according to the power average.

[0189] The engine target speed and generator target torque output module 107 is used to output the engine target speed and the generator target torque according to the integral adjustment trigger information, the power average, the demand power generation power, the engine setting parameters and the generator setting parameters, so as to realize the power generation control.

[0190] ​The power generation control system of the range extending system is used to execute the power generation control method of the range extending system according to any of the embodiments of the present application, and can be realized by software and / or hardware. Therefore, the power generation control system of the range extending system according to the embodiments of the present application comprises the technical features of the power generation control method of the range extending system according to any of the embodiments of the present application, and can achieve the beneficial effects of the power generation control method of the range extending system according to any of the embodiments of the present application. The same parts can refer to the description of the power generation control method of the range extending system according to the embodiments of the present application, and will not be repeated here.

[0191] Based on the same inventive concept, the present application further provides a range extending vehicle, comprising: a range extending system and a controller, wherein the range extending system is connected with the controller; and the controller is used to execute the power generation control method of the range extending system according to any of the embodiments of the present application. Therefore, the range extending vehicle according to the embodiments of the present application comprises the technical features of the power generation control method of the range extending system according to any of the embodiments of the present application, and can achieve the beneficial effects of the power generation control method of the range extending system according to any of the embodiments of the present application. The same parts can refer to the description of the power generation control method of the range extending system according to the embodiments of the present application, and will not be repeated here.

[0192] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and replacements can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A power generation control method for a range-extending system, characterized in that: include: Obtain required power generation; Acquire engine setting parameters and generator setting parameters according to the required power generation power, wherein the engine setting parameters include an engine setting speed or an engine setting torque, and the generator setting parameters include a generator setting torque or a generator setting speed; Get the actual generated power; Obtaining a power difference value based on the required generated power and the actual generated power and storing the difference value to form a power difference value group; Obtaining a power mean value according to the power difference value group; Outputting integral adjustment trigger information according to the power mean value; The target engine speed and the target generator torque are output according to the integral adjustment trigger information, the power mean, the required power generation power, the engine setting parameters and the generator setting parameters to achieve power generation control.

2. The power generation control method of the range extender system according to claim 1, characterized in that: Before obtaining the engine setting parameters and the generator setting parameters according to the required power generation power, the method further includes: Obtaining a generator preset MAP map and an engine preset MAP map; Acquiring engine setting parameters and generator setting parameters according to the required power generation power includes: An engine setting parameter is obtained according to the required power generation power and the preset engine MAP map, and a generator setting parameter is obtained according to the required power generation power and the preset generator MAP map.

3. The power generation control method of the range extender system according to claim 1, characterized in that: Obtaining a power difference according to the required generated power and the actual generated power, including: Performing a difference calculation based on the required generated power and the actual generated power to obtain a first power value; An absolute value operation is performed on the first power value to obtain a power difference.

4. The power generation control method of the range extender system according to claim 1, characterized in that: Outputting integral adjustment trigger information according to the power mean value includes: Obtaining a first power threshold; When the power average is greater than the first power threshold, integral adjustment trigger information is output.

5. The power generation control method of the range extender system according to claim 1, characterized in that: Outputting an engine target speed and a generator target torque according to the integral adjustment trigger information, the power mean, the required generated power, the engine setting parameters, and the generator setting parameters includes: Obtaining a power generation deviation value according to the power mean and the required power generation power; The engine setting parameters and the generator setting parameters are adjusted according to the integral adjustment trigger information and the generated power deviation value to output an engine target speed and a generator target torque.

6. The power generation control method of the range extender system according to claim 2, characterized in that: Also includes: obtaining a working state of an accessory in the range-extended system according to the power difference; The engine preset MAP map and the generator preset MAP map are corrected based on the accessory operating state.

7. The power generation control method of the range extender system according to claim 6, characterized in that: Obtaining the operating status of the accessories in the range-extended system according to the power difference includes: Obtaining a second power threshold; When the power difference is greater than the second power threshold, an operating state of an accessory in the range-extended system is obtained.

8. The power generation control method of the range extender system according to claim 6, characterized in that: Before modifying the preset engine MAP map and the preset generator MAP map based on the accessory operating state, the method further includes: Get key power-off trigger information.

9. A power generation control system for a range extender system, characterized in that: The power generation control system of the range extender system executes the power generation control method of the range extender system according to any one of claims 1 to 8, and the power generation control system of the range extender system includes: A demanded power generation acquisition module is used to obtain the demanded power generation; an engine setting parameter and generator setting parameter acquisition module, configured to acquire engine setting parameters and generator setting parameters according to the required power generation power, wherein the engine setting parameters include an engine setting speed or an engine setting torque, and the generator setting parameters include a generator setting torque or a generator setting speed; An actual power generation acquisition module is used to obtain the actual power generation; a power difference acquisition module, configured to acquire a power difference according to the required generated power and the actual generated power and store the power difference to form a power difference group; A power mean value acquisition module, configured to acquire a power mean value according to the power difference value group; An integral adjustment trigger information output module, configured to output integral adjustment trigger information according to the power mean; The engine target speed and generator target torque output module is used to output the engine target speed and generator target torque according to the integral adjustment trigger information, the power mean, the required power generation power, the engine setting parameters and the generator setting parameters to achieve power generation control.

10. An extended-range vehicle, characterized in that: The range-extended vehicle comprises: a range-extending system and a controller, wherein the range-extending system is connected to the controller; The controller is used to execute the power generation control method of the range extender system according to any one of claims 1 to 8.

Images