A Method, Device, Equipment and Storage Medium for Controlling the Power Generation of a Range Extender

Abstract

The present application relates to the technical field of range extender control, and discloses a method, device, equipment and storage medium for controlling the power generation of a range extender, including: determining the rotational speed of the vehicle in different vehicle speed ranges and the torque change amount corresponding to the torque control cut-in point in different vehicle speed ranges; when the vehicle speed reaches any vehicle speed range and does not reach the vehicle speed corresponding to the torque control point of that vehicle speed range, obtaining the target power generation power according to the rotational speed corresponding to that vehicle speed range, so that the range extender generates electricity according to the target power generation power; when the vehicle speed reaches above the vehicle speed corresponding to the torque control point of any vehicle speed range, obtaining the target power generation power according to the torque change amount corresponding to the torque control point of that vehicle speed range, so that the range extender generates electricity according to the target power generation power. Applying the technical solution of the present application can achieve power synchronization control of torque under the original power control rotational speed, reduce the fuel consumption of the vehicle while ensuring the demand for electric power, and improve the user experience.

Description

Technical Field

[0001] The present application relates to the technical field of range extender control, and particularly relates to a method, device, equipment and storage medium for controlling the power generation of a range extender. Background Art

[0002] In current range extender control technology, during vehicle driving, a fixed-point power generation strategy (power and speed control) scheme is usually adopted. Based on the external characteristics of the range extender system, the optimal curves of speed and power are determined, and then power generation is carried out at different powers at different vehicle speeds. At the same time, different powers respectively correspond to a determined speed, so as to implement the technical scheme for controlling the power generation of the range extender vehicle during driving.

[0003] However, during the process of vehicle speed change, the power generation power changes synchronously, and there are abrupt changes in the noise of the range extender system, resulting in poor overall vehicle experience. Especially when changing from low power to high power, the speed will increase synchronously, and the overall driving experience is obvious; during the user's driving process, due to the variability of driving scenarios, the vehicle speed is variable, and both the power and speed are variable, resulting in relatively high comprehensive fuel consumption.

[0004] Therefore, there is an urgent need to provide a technical solution to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present application provides a method, device, equipment and storage medium for controlling the power generation of a range extender, which is used to solve the problems of sudden change of engine speed and poor transient fuel consumption resulting in poor comprehensive fuel consumption in the prior art.

[0006] According to one aspect of the embodiments of the present application, a method for controlling the power generation of a range extender is provided, and the method includes:

[0007] Based on the power demand simulation data of the vehicle at different vehicle speeds, determine the speed values of the vehicle in different vehicle speed intervals;

[0008] Construct torque control cut-in points for the vehicle in different vehicle speed intervals, and determine the torque change amount corresponding to each torque control cut-in point;

[0009] When the actual vehicle speed of the vehicle reaches any vehicle speed interval and has not reached the vehicle speed corresponding to the torque control cut-in point of this vehicle speed interval, obtain the target power generation power according to the actual speed value corresponding to this vehicle speed interval, so that the range extender of the vehicle generates power according to the target power generation power; when the actual vehicle speed of the vehicle reaches the vehicle speed corresponding to the torque control cut-in point of any vehicle speed interval or above, obtain the target power generation power according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed interval, so that the range extender of the vehicle generates power according to the target power generation power.

[0010] In an alternative approach, the steps of determining the rotational speed values of the vehicle in different vehicle speed ranges based on the simulation data of the power requirements of the vehicle at different vehicle speeds include:

[0011] Based on the simulation data of the power requirements of the vehicle at different vehicle speeds, determine the power generation power of the vehicle in different vehicle speed ranges;

[0012] Based on the external characteristics of the range extender of the vehicle, determine the rotational speed values of the vehicle at different power generation powers;

[0013] According to the power generation power of the vehicle in different vehicle speed ranges and the rotational speed values of the vehicle at different power generation powers, obtain the rotational speed values of the vehicle in different vehicle speed ranges.

[0014] In an alternative approach, the steps of obtaining the target power generation power according to the actual rotational speed value corresponding to any vehicle speed range include:

[0015] Based on the rotational speed values of the vehicle at different power generation powers, obtain and use the power generation power corresponding to any vehicle speed range as the target power generation power.

[0016] In an alternative approach, the steps of obtaining the target power generation power according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed range include:

[0017] Based on the current rotational speed value and the current power generation power of the vehicle, calculate the original torque of any vehicle speed range, and obtain the target torque of any vehicle speed range according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed range and the original torque;

[0018] Calculate the target power generation power according to the target torque of any vehicle speed range and the current rotational speed value.

[0019] In an alternative approach, it further includes:

[0020] When the vehicle speed change amount of the vehicle within a preset time period exceeds the vehicle speed threshold, determine the target power generation power according to the change in the rotational speed value of the vehicle, so that the range extender of the vehicle generates power according to the target power generation power; when the vehicle speed change amount of the vehicle within a preset time period does not exceed the vehicle speed threshold, determine the target power generation power according to the torque change of the vehicle, so that the range extender of the vehicle generates power according to the target power generation power.

[0021] According to another aspect of the embodiments of the present application, a range extender power generation power control device is provided, including:

[0022] A processing module, configured to determine rotational speed values of the vehicle in different vehicle speed ranges based on power demand simulation data of the vehicle at different vehicle speeds;

[0023] A determination module, configured to construct torque control cut-in points in different vehicle speed ranges of the vehicle and determine torque change amounts corresponding to each torque control cut-in point;

[0024] A control module, configured to, when an actual vehicle speed of the vehicle reaches any vehicle speed range and has not reached the vehicle speed corresponding to the torque control cut-in point of this vehicle speed range, obtain a target power generation power according to an actual rotational speed value corresponding to this vehicle speed range, so that a range extender of the vehicle generates power according to the target power generation power; when the actual vehicle speed of the vehicle reaches a speed above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed range, obtain the target power generation power according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed range, so that the range extender of the vehicle generates power according to the target power generation power.

[0025] In an optional manner, the processing module is specifically configured to:

[0026] Determine power generation powers of the vehicle in different vehicle speed ranges based on the power demand simulation data of the vehicle at different vehicle speeds;

[0027] Determine rotational speed values of the vehicle at different power generation powers based on external characteristics of a range extender of the vehicle;

[0028] Obtain rotational speed values of the vehicle in different vehicle speed ranges according to the power generation powers of the vehicle in different vehicle speed ranges and the rotational speed values of the vehicle at different power generation powers.

[0029] In an optional manner, the step of obtaining a target power generation power according to the actual rotational speed value corresponding to any vehicle speed range in the control module includes:

[0030] Obtain and use the power generation power corresponding to any vehicle speed range as the target power generation power based on the rotational speed values of the vehicle at different power generation powers.

[0031] According to another aspect of the embodiments of the present application, there is provided a range extender power generation power control device, including: a processor, a memory, a communication interface, and a communication bus, where the processor, the memory, and the communication interface complete communication with each other through the communication bus;

[0032] The memory is configured to store at least one executable instruction, and the executable instruction causes the processor to execute operations of the range extender power generation power control method as described in the present invention.

[0033] According to another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, in which at least one executable instruction is stored, and the executable instruction causes the range extender power control device / equipment to execute the operations of the range extender power control method of the present invention.

[0034] In the embodiments of the present application, based on the simulation data of the power demand of the vehicle at different vehicle speeds, the rotational speed values of the vehicle in different vehicle speed intervals are determined; the torque control cut-in points in different vehicle speed intervals of the vehicle are constructed, and the torque change amount corresponding to each torque control cut-in point is determined; when the actual vehicle speed of the vehicle reaches any vehicle speed interval and does not reach the vehicle speed corresponding to the torque control cut-in point of this vehicle speed interval, the target power generation power is obtained according to the actual rotational speed value corresponding to this vehicle speed interval, so that the range extender of the vehicle generates electricity according to the target power generation power; when the actual vehicle speed of the vehicle reaches above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed interval, the target power generation power is obtained according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed interval, so that the range extender of the vehicle generates electricity according to the target power generation power. It can realize power synchronous control of torque under the condition of the original power control rotational speed based on different vehicle speed changes, reduce the fuel consumption of the vehicle while ensuring the demand for electric power, and improve the user experience.

[0035] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically gives the specific implementation manners of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are only used to illustrate the embodiments and are not considered as a limitation to the present application. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0037] Figure 1 The flowchart of the first embodiment of the range extender power control method provided by the present application is shown;

[0038] Figure 2 The flowchart of the second embodiment of the range extender power control method provided by the present application is shown;

[0039] Figure 3 The structural diagram of the first embodiment of the range extender power control device provided by the present application is shown;

[0040] Figure 4 The structural diagram of the embodiment of the range extender power control equipment provided by the present application is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The block diagrams shown in the drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0043] The flowcharts shown in the drawings are only exemplary illustrations and do not necessarily include all contents and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined. Therefore, the actual execution order may change according to the actual situation.

[0044] In the present application, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0045] In the current range extender control technology, during the vehicle driving process, a fixed-point power generation strategy (power and speed control) scheme is usually adopted. Based on the external characteristics of the range extender system, the optimal curves of speed and power are determined, and then, power generation is achieved at different powers at different vehicle speeds. At the same time, different powers respectively correspond to a determined speed, so as to implement the technical scheme of controlling the power generation of the range extender vehicle driving state. However, during the vehicle speed change process, the power generation power changes synchronously, and there is a sudden change in the noise of the range extender system, resulting in a poor overall vehicle experience. Especially when changing from low power to high power, the speed will increase synchronously, and the overall vehicle driving experience is obvious; during the user driving process, with the driving scenario requirements, the vehicle speed is variable, and both the power and speed are variable, resulting in a relatively high comprehensive fuel consumption. Based on this:

[0046] Figure 1 The flowchart of the first embodiment of the range extender power generation control method provided by the present application is shown, and this method is executed by a range extender power generation control device. Please refer to Figure 1 As shown, this method includes the following steps:

[0047] Step S110: Based on the power demand simulation data of the vehicle at different vehicle speeds, determine the rotational speed values of the vehicle in different vehicle speed intervals.

[0048] Among them, the vehicle is defaulted to be an extended-range electric vehicle. Different vehicle speeds correspond to different power demand simulation data. The vehicle speeds are evenly divided to obtain multiple vehicle speed intervals with the same range. Each vehicle speed interval corresponds to a rotational speed value, that is, when the vehicle speed of the vehicle changes within a vehicle speed interval, the rotational speed value does not change. During the process of vehicle speed change, the rotational speed is maintained stable to avoid the problems of abrupt change in the rotational speed of the extended-range system and high fuel consumption when the user adds or subtracts the vehicle speed back and forth.

[0049] It should be noted that in this embodiment, every 20 KPH is used as a vehicle speed interval for elaboration (the vehicle speed interval can also be divided according to the actual situation, and there is no limitation here). As shown in Table 1 below (taking the maximum speed of 120 KPH as an example). When the vehicle speed is in the vehicle speed interval of 0 - 20 KPH, the range extender does not generate electricity. When the vehicle speed is in the vehicle speed interval of 21 - 40 KPH, the rotational speed value is 900 RPM, and so on.

[0050] Table 1:

[0051] Vehicle speed range 0-20 21-40 41-60 61-80 81-100 101-120 Revolution speed value - 900 1100 1200 1300 1400

[0052] Step S120: Construct the torque control cut-in points of the vehicle in different vehicle speed intervals, and determine the torque change amount corresponding to each torque control cut-in point.

[0053] Among them, the torque control cut-in point is defaulted to be the middle value of the vehicle speed interval, that is, the vehicle speeds are 10, 30, 50, 70, 90, 110, etc. As shown in Table 2 below, the torque change amount corresponding to each torque control cut-in point is defaulted to be 20 N.M, and it can also be set according to the actual situation, and there is no limitation here.

[0054] Table 2:

[0055]

[0056]

[0057] It should be noted that the vehicle speed data such as 10, 30, 50, 70, 90, 110, etc. in Table 2 are all boundary parameters for triggering torque control, and the specific torque change amount can also be calibrated by oneself, and there is no limitation here.

[0058] Step S130: When the actual vehicle speed reaches any vehicle speed range and has not reached the vehicle speed corresponding to the torque control cut-in point of that vehicle speed range, obtain the target power generation according to the actual rotational speed value corresponding to that vehicle speed range, so that the range extender of the vehicle generates electricity according to the target power generation; when the actual vehicle speed reaches a vehicle speed above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed range, obtain the target power generation according to the torque change amount corresponding to the torque control cut-in point of that vehicle speed range, so that the range extender of the vehicle generates electricity according to the target power generation.

[0059] Among them, the target power generation is the power generation of the range extender set according to the actual vehicle speed. When the actual vehicle speed is 25 KPH, at this time the actual vehicle speed reaches the vehicle speed range of 21 - 40 KPH, but has not reached the vehicle speed of 30 KPH corresponding to the torque control cut-in point of this vehicle speed range, then calculate the target power generation according to the actual rotational speed value of 900 RPM corresponding to the vehicle speed range of 21 - 40 KPH. When the actual vehicle speed is 30 KPH, at this time the actual vehicle speed reaches the vehicle speed range of 21 - 40 KPH and reaches the vehicle speed of 30 KPH corresponding to the torque control cut-in point of this vehicle speed range, then calculate the target power generation according to the torque change amount of 20 N.M corresponding to the torque control cut-in point of the vehicle speed range of 21 - 40 KPH.

[0060] It should be noted that when the actual vehicle speed reaches the vehicle speed corresponding to the torque control cut-in point (or directly changes to a vehicle speed above the vehicle speed corresponding to the torque control cut-in point due to too fast vehicle speed change), the step of obtaining the target power generation according to the torque change amount is triggered. When the actual vehicle speed exceeds the vehicle speed corresponding to the torque control cut-in point and does not exceed the corresponding vehicle speed range, the target power generation obtained according to the torque change amount is still maintained (torque, power generation, and rotational speed value remain unchanged). When the vehicle speed is at the vehicle speed corresponding to the torque control cut-in point and above (not exceeding this vehicle speed range), the step of obtaining the target power generation according to the torque change amount is triggered only once, and after triggering, the torque, power generation, and rotational speed value remain unchanged when the vehicle speed is at the vehicle speed corresponding to the torque control cut-in point and above (not exceeding this vehicle speed range).

[0061] The technical solution of this embodiment can, based on different vehicle speed changes, realize power synchronous control of torque under the condition of original power control of rotational speed, reduce the fuel consumption of the vehicle while ensuring the demand for electric power, and improve the user experience.

[0062] Figure 2 The flowchart of the second embodiment of the range extender power generation control method provided by this application is shown, and this method is executed by the range extender power generation control device. Please refer to Figure 2 As shown, this method includes the following steps:

[0063] Step S210: Determine the power generation power of the vehicle in different vehicle speed intervals based on the power demand simulation data of the vehicle at different vehicle speeds.

[0064] Among them, based on the overall vehicle configuration status and overall vehicle resistance information of the vehicle, simulation tests are carried out to obtain the power demand simulation data of the vehicle at different vehicle speeds. Based on the power demand simulation data of the vehicle at different vehicle speeds, a real vehicle test is carried out on the vehicle to verify the power retention performance, so as to obtain the power generation power of the vehicle in different vehicle speed intervals. The magnitude of the power generation power can be adjusted arbitrarily, and the specific process shall be subject to the solutions of each vehicle factory and will not be elaborated here. The power generation power of the vehicle in different vehicle speed intervals is shown in Table 3.

[0065] Table 3:

[0066] Vehicle speed range 0-20 21-40 41-60 61-80 81-100 101-120 Power generation 0 10 20 30 40 50

[0067] Step S220: Determine the rotational speed values of the vehicle at different power generation powers based on the external characteristics of the vehicle's range extender.

[0068] Among them, each power generation power corresponds to a rotational speed value. Based on the external characteristics of the vehicle's range extender, the rotational speed values corresponding to different powers can be formed, as shown in Table 4 below.

[0069] Table 4:

[0070] Power generation 5 10 15 30 40 50 60 70 Revolution speed value 800 900 1000 1200 1300 1400 1500 1600

[0071] Step S230: Obtain the rotational speed values of the vehicle in different vehicle speed intervals according to the power generation power of the vehicle in different vehicle speed intervals and the rotational speed values of the vehicle at different power generation powers.

[0072] Among them, the data in Table 3 and Table 4 are combined correspondingly to obtain the rotational speed values of the vehicle in different vehicle speed intervals shown in Table 5.

[0073] Table 5:

[0074] Vehicle speed range 0-20 21-40 41-60 61-80 81-100 101-120 Revolution speed value - 900 1100 1200 1300 1400

[0075] It should be noted that the fixed calculation formula for the power generation power is: power generation power = rotational speed value * torque / 9550, that is, when the power generation power corresponding to each vehicle speed interval is known, the torque is also a determined value.

[0076] Step S240: Construct the torque control cut-in points of the vehicle in different vehicle speed intervals and determine the torque change amount corresponding to each torque control cut-in point.

[0077] Step S250: When the actual vehicle speed reaches any vehicle speed range and has not reached the vehicle speed corresponding to the torque control cut-in point of this vehicle speed range, obtain the target power generation according to the actual rotational speed value corresponding to this vehicle speed range, so that the range extender of the vehicle generates electricity according to the target power generation; when the actual vehicle speed reaches a speed above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed range, obtain the target power generation according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed range, so that the range extender of the vehicle generates electricity according to the target power generation.

[0078] In step S250, the step of obtaining the target power generation according to the actual rotational speed value corresponding to any vehicle speed range includes:

[0079] Based on the rotational speed values of the vehicle at different power generations, obtain and use the power generation corresponding to any vehicle speed range as the target power generation.

[0080] Among them, obtain the power generation corresponding to the actual rotational speed value according to Table 4, and determine this power generation as the target power generation.

[0081] In step S250, the step of obtaining the target power generation according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed range includes:

[0082] Based on the current rotational speed value and the current power generation of the vehicle, calculate the original torque of any vehicle speed range, and obtain the target torque of any vehicle speed range according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed range and the original torque.

[0083] Among them, the current rotational speed value is the rotational speed value before the vehicle speed reaches the vehicle speed corresponding to the torque control cut-in point of the vehicle speed range, and the current power generation is the power generation before the vehicle speed reaches the vehicle speed corresponding to the torque control cut-in point of the vehicle speed range. Substitute the current rotational speed value and the current power generation into the fixed power generation calculation formula to calculate the original torque. Target torque = original torque ± torque change amount (+ for the acceleration stage, - for the deceleration stage).

[0084] Calculate the target power generation according to the target torque of any vehicle speed range and the current rotational speed value.

[0085] Among them, substitute the target torque and the current rotational speed value into the fixed power generation calculation formula to calculate the target power generation.

[0086] To better illustrate the technical solution of this embodiment, the power generation control of the range extender is described separately using the acceleration stage and the deceleration stage. Specifically:

[0087] 1) Acceleration stage. The torque change amount in this stage is shown in Table 6 below.

[0088] Table 6:

[0089]

[0090] ① When the vehicle speed is below 20 KPH, the range extender does not generate electricity.

[0091] ② When the vehicle speed exceeds 20 KPH and does not exceed 30 KPH, the current rotational speed value is 900 RPM, the current power generation power is 10 KW / H, the torque is 106 N.M, and the current power generation power is the target power generation power.

[0092] ③ When the vehicle speed reaches 30 KPH, it reaches the vehicle speed corresponding to the torque control cut-in point in the vehicle speed range of 21 - 40 KPH. At this time, the current rotational speed value is 900 RPM, the current power generation power is 10 KW / H, and the original torque is 106 N.M. According to the torque change of 20 N.M, the target torque is calculated to be 106 + 20 = 126 N.M; according to the target torque and the current rotational speed value, the target power generation power is calculated to be 11.8 KW / H.

[0093] ④ When the vehicle speed is between 31 - 40 KPH, the rotational speed value, torque, and power generation power remain unchanged. The current rotational speed value is still 900 RPM, the torque is 126 N.M, and the target power generation power is 11.8 KW / H.

[0094] ⑤ When the vehicle speed exceeds 40 KPH and does not exceed 50 KPH, the vehicle speed enters another vehicle speed range. At this time, the current rotational speed value becomes 1100 RPM, the current power generation power is 20 KW / H, and the torque is 173.6 N.M. The current power generation power is the target power generation power.

[0095] ⑥ When the vehicle speed reaches 50 KPH, it reaches the vehicle speed corresponding to the torque control cut-in point in the vehicle speed range of 41 - 60 KPH. At this time, the current rotational speed value is 1100 RPM, the current power generation power is 20 KW / H, and the original torque is 173.6 N.M. According to the torque change of 20 N.M, the target torque is calculated to be 173.6 + 20 = 193.6 N.M; according to the target torque and the current rotational speed value, the target power generation power is calculated to be 22 KW / H.

[0096] ⑦ When the vehicle speed is between 51 - 60 KPH, the rotational speed value, torque, and power generation power remain unchanged. The current rotational speed value is still 1100 RPM, the torque is 193.6 N.M, and the target power generation power is 22 KW / H.

[0097] ⑧ And so on, the power, rotational speed, and torque balance conditions at each vehicle speed can be known.

[0098] 2) Deceleration stage. The torque change in this stage is shown in Table 7 below.

[0099] Table 7:

[0100]

[0101] ① When the vehicle speed exceeds 60 KPH and does not exceed 70 KPH, the current rotational speed value is 1200 RPM, the current power generation is 30 KW / H, and the torque is 238.75 N.M.

[0102] ② When the vehicle speed reaches 50 KPH, it reaches the vehicle speed corresponding to the torque control cut-in point in the vehicle speed range of 41 - 60 KPH. At this time, the current rotational speed value is 1200 RPM, the current power generation is 30 KW / H, and the original torque is 238.75 N.M. According to the torque change of 20 N.M, the target torque is calculated as 238.75 - 20 = 218.75 N.M; according to the target torque and the current rotational speed value, the target power generation is calculated as 27.5 KW / H.

[0103] ③ When the vehicle speed exceeds 40 KPH and does not exceed 50 KPH, at this time the vehicle speed does not exceed 50 KPH, which is the vehicle speed corresponding to the torque control cut-in point in the range of 41 - 60 KPH. The actual rotational speed value in this vehicle speed range is 1100 RPM, then the current rotational speed value is adjusted to 1100 RPM, the current power generation is 20 KW / H, the torque is 173.6 N.M, and the current power generation is the target power generation.

[0104] ④ When the vehicle speed reaches 30 KPH, it reaches the vehicle speed corresponding to the torque control cut-in point in the vehicle speed range of 21 - 40 KPH. At this time, the current rotational speed value is 1100 RPM, the current power generation is 20 KW / H, and the original torque is 173.6 N.M. According to the torque change of 20 N.M, the target torque is calculated as 173.6 - 20 = 153.6 N.M; according to the target torque and the current rotational speed value, the target power generation is calculated as 17.7 KW / H.

[0105] ⑤ When the vehicle speed exceeds 20 KPH and does not exceed 30 KPH, at this time the vehicle speed does not exceed 30 KPH, which is the vehicle speed corresponding to the torque control cut-in point in the range of 21 - 40 KPH. The actual rotational speed value in this vehicle speed range is 900 RPM, then the current rotational speed value is adjusted to 900 RPM, the current power generation is 10 KW / H, the torque is 106 N.M, and the current power generation is the target power generation.

[0106] ⑥ When the vehicle speed is below 20 KPH, the range extender stops generating electricity.

[0107] The technical solution of this embodiment can further achieve that the speed of the vehicle remains unchanged during the process of increasing or decreasing by a certain amount; it can achieve that the speed of the range extender remains unchanged when the user frequently accelerates and decelerates, improving the user experience; it can achieve power correction and power balance when the user frequently accelerates and decelerates; while ensuring the power demand, it reduces the fuel consumption of the vehicle and improves the user experience.

[0108] Based on any of the above embodiments, it further includes:

[0109] When the speed change amount of the vehicle within a preset time period exceeds the speed threshold, determine the target power generation according to the change of the rotational speed value of the vehicle, so that the range extender of the vehicle generates electricity according to the target power generation; when the speed change amount of the vehicle within a preset time period does not exceed the speed threshold, determine the target power generation according to the torque change of the vehicle, so that the range extender of the vehicle generates electricity according to the target power generation.

[0110] Wherein, the preset time period is defaulted to a unit time, such as 1 second, 1 minute, etc., without limitation here. The speed threshold is defaulted to 10 KPH. For example, when the speed change amount within the preset time period exceeds 10 KPH, the form of controlling the rotational speed change is adopted to increase or decrease the power; when the speed change amount within the preset time period does not exceed 10 KPH, the form of controlling the torque change is adopted to increase or decrease the power. That is: for small speed changes, a scheme of maintaining the rotational speed unchanged and increasing or decreasing the torque is adopted to adjust the power; for large speed changes, a scheme of increasing or decreasing the rotational speed is adopted to adjust the power.

[0111] Figure 3 The structural schematic diagram of the embodiment of the range extender power generation control device provided by the present application is shown. Please refer to Figure 3 As shown, the device 300 includes: a processing module 310, a determination module 320, and a control module 330.

[0112] The processing module 310 is configured to determine the rotational speed value of the vehicle in different vehicle speed ranges based on the power demand simulation data of the vehicle at different vehicle speeds;

[0113] The determination module 320 is configured to construct the torque control cut-in points in different vehicle speed ranges of the vehicle and determine the torque change amount corresponding to each torque control cut-in point;

[0114] A control module 330, configured to, when the actual vehicle speed reaches any vehicle speed interval and has not reached the vehicle speed corresponding to the torque control cut-in point of this vehicle speed interval, obtain a target power generation power according to the actual rotational speed value corresponding to this vehicle speed interval, so that the range extender of the vehicle generates electricity according to the target power generation power; when the actual vehicle speed of the vehicle reaches above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed interval, obtain the target power generation power according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed interval, so that the range extender of the vehicle generates electricity according to the target power generation power.

[0115] In an optional manner, the processing module 310 is specifically configured to:

[0116] Based on the power demand simulation data of the vehicle at different vehicle speeds, determine the power generation power of the vehicle in different vehicle speed intervals;

[0117] Based on the external characteristics of the range extender of the vehicle, determine the rotational speed values of the vehicle at different power generation powers;

[0118] According to the power generation power of the vehicle in different vehicle speed intervals and the rotational speed values of the vehicle at different power generation powers, obtain the rotational speed values of the vehicle in different vehicle speed intervals.

[0119] In an optional manner, the step of obtaining the target power generation power according to the actual rotational speed value corresponding to any vehicle speed interval in the control module 330 includes:

[0120] Based on the rotational speed values of the vehicle at different power generation powers, obtain and use the power generation power corresponding to any vehicle speed interval as the target power generation power.

[0121] In an optional manner, the step of obtaining the target power generation power according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed interval in the control module 330 includes:

[0122] Based on the current rotational speed value and the current power generation power of the vehicle, calculate the original torque of any vehicle speed interval, and according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed interval and the original torque, obtain the target torque of any vehicle speed interval;

[0123] According to the target torque of any vehicle speed interval and the current rotational speed value, calculate and obtain the target power generation power.

[0124] In an optional manner, it further includes: a second control module;

[0125] The second control module is configured to: when the vehicle speed change amount of the vehicle within a preset time period exceeds the vehicle speed threshold, determine the target power generation power according to the change of the rotational speed value of the vehicle, so that the range extender of the vehicle generates power according to the target power generation power; when the vehicle speed change amount of the vehicle within a preset time period does not exceed the vehicle speed threshold, determine the target power generation power according to the torque change of the vehicle, so that the range extender of the vehicle generates power according to the target power generation power.

[0126] The technical solution of this embodiment can, based on different vehicle speed changes, realize power synchronous control of torque while controlling the rotational speed at the original power, reduce the fuel consumption of the vehicle while ensuring the demand for electric power, and improve the user experience.

[0127] It should be noted that the range extender power generation power control device provided in the above embodiment and the range extender power generation power control method provided in the foregoing embodiment belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiment, and will not be elaborated herein.

[0128] Figure 4 The structural schematic diagram of the embodiment of the range extender power generation power control device provided by the present application is shown, which shows the structural schematic diagram of the computer system suitable for implementing the range extender power generation power control device of the embodiment of the present application. The specific implementation of the range extender power generation power control device in the specific embodiment of the present application is not limited.

[0129] Please refer to Figure 4 As shown, the range extender power generation power control device includes: a controller; a memory for storing one or more programs, which when executed by the controller, execute the above-mentioned range extender power generation power control method.

[0130] Please continue to refer to Figure 4 As shown, the computer system 500 of the range extender power generation power control device includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 into the random access memory (RAM) 503, such as executing the method in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other through a bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0131] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is mounted on the drive 510 as needed so that a computer program read therefrom can be installed into the storage section 508 as needed.

[0132] Specifically, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 509, and / or installed from the removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0133] Another aspect of the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it implements the extended-range generator power control method as described above. The computer-readable storage medium may be included in the extended-range generator power control device described in the above embodiment, or may exist separately without being assembled into the electronic device.

[0134] Another aspect of the present application also provides a computer program product or a computer program, and the computer program product or the computer program includes at least one executable instruction, and when the executable instruction runs on the extended-range generator power control device / equipment, it causes the extended-range generator power control device / equipment to execute the extended-range generator power control method as described above.

[0135] The executable instruction can specifically be used to cause the extended-range generator power control device / equipment to perform the following operations:

[0136] Based on the power demand simulation data of the vehicle at different vehicle speeds, determine the rotational speed values of the vehicle in different vehicle speed ranges;

[0137] Construct the torque control cut-in points of the vehicle in different vehicle speed ranges, and determine the torque change amount corresponding to each torque control cut-in point;

[0138] When the actual vehicle speed of the vehicle reaches any vehicle speed range and does not reach the vehicle speed corresponding to the torque control cut-in point of this vehicle speed range, obtain the target power generation power according to the actual rotation speed value corresponding to this vehicle speed range, so that the range extender of the vehicle generates power according to the target power generation power; when the actual vehicle speed of the vehicle reaches above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed range, obtain the target power generation power according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed range, so that the range extender of the vehicle generates power according to the target power generation power.

[0139] In an alternative manner, the step of determining the rotation speed value of the vehicle in different vehicle speed ranges based on the power demand simulation data of the vehicle at different vehicle speeds includes:

[0140] Based on the power demand simulation data of the vehicle at different vehicle speeds, determine the power generation power of the vehicle in different vehicle speed ranges;

[0141] Based on the external characteristics of the range extender of the vehicle, determine the rotation speed value of the vehicle at different power generation powers;

[0142] According to the power generation power of the vehicle in different vehicle speed ranges and the rotation speed value of the vehicle at different power generation powers, obtain the rotation speed value of the vehicle in different vehicle speed ranges.

[0143] In an alternative manner, the step of obtaining the target power generation power according to the actual rotation speed value corresponding to any vehicle speed range includes:

[0144] Based on the rotation speed value of the vehicle at different power generation powers, obtain and use the power generation power corresponding to any vehicle speed range as the target power generation power.

[0145] In an alternative manner, the step of obtaining the target power generation power according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed range includes:

[0146] Based on the current rotation speed value and the current power generation power of the vehicle, calculate the original torque of any vehicle speed range, and according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed range and the original torque, obtain the target torque of any vehicle speed range;

[0147] According to the target torque of any vehicle speed range and the current rotation speed value, calculate and obtain the target power generation power.

[0148] In an alternative manner, it further includes:

[0149] When the change in the vehicle speed within a preset time period exceeds the vehicle speed threshold, determine the target power generation according to the change in the rotational speed value of the vehicle, so that the range extender of the vehicle generates electricity according to the target power generation; when the change in the vehicle speed within the preset time period does not exceed the vehicle speed threshold, determine the target power generation according to the torque change of the vehicle, so that the range extender of the vehicle generates electricity according to the target power generation.

[0150] The technical solution of this embodiment can achieve power synchronous control of torque while controlling the rotational speed at the original power based on different vehicle speed changes, reduce the fuel consumption of the vehicle while ensuring the demand for electric power, and improve the user experience.

[0151] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable computer program is carried. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The computer program contained on a computer-readable medium can be transmitted by any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0152] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the above-mentioned module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in an order different from that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, as well as the combination of blocks in the block diagram or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0153] The units involved in the embodiments described in the present application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the unit itself.

[0154] According to one aspect of the embodiments of the present application, a computer system is further provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) or the program loaded from the storage part into the random access memory (RAM), such as executing the methods in the above-mentioned embodiments. In the RAM, various programs and data required for system operation are also stored. The CPU, ROM, and RAM are connected to each other through a bus. The input / output (I / O) interface is also connected to the bus.

[0155] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. as well as a speaker, etc.; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. A removable medium such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is mounted on the drive as needed so that a computer program read from it is installed into the storage part as needed.

[0156] The above content is only a preferred exemplary embodiment of the present application and is not used to limit the implementation of the present application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope required by the claims.

Claims

1. A method for controlling the power generation of a range extender, characterized in that, Including: Based on the power demand simulation data of the vehicle at different vehicle speeds, determining the rotational speed values of the vehicle in different vehicle speed intervals; Constructing torque control cut-in points for the vehicle in different vehicle speed intervals and determining the torque change amount corresponding to each torque control cut-in point; When the actual vehicle speed of the vehicle reaches any vehicle speed interval and does not reach the vehicle speed corresponding to the torque control cut-in point of this vehicle speed interval, obtaining the target power generation power according to the actual rotational speed value corresponding to this vehicle speed interval, so that the range extender of the vehicle generates electricity according to the target power generation power; when the actual vehicle speed of the vehicle reaches above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed interval, obtaining the target power generation power according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed interval, so that the range extender of the vehicle generates electricity according to the target power generation power.

2. The method according to claim 1, characterized in that The step of determining the rotational speed values of the vehicle in different vehicle speed intervals based on the power demand simulation data of the vehicle at different vehicle speeds includes: Based on the power demand simulation data of the vehicle at different vehicle speeds, determining the power generation power of the vehicle in different vehicle speed intervals; Based on the external characteristics of the range extender of the vehicle, determining the rotational speed values of the vehicle at different power generation powers; According to the power generation power of the vehicle in different vehicle speed intervals and the rotational speed values of the vehicle at different power generation powers, obtaining the rotational speed values of the vehicle in different vehicle speed intervals.

3. The method according to claim 2, wherein The step of obtaining the target power generation power according to the actual rotational speed value corresponding to any vehicle speed interval includes: Based on the rotational speed values of the vehicle at different power generation powers, obtaining and taking the power generation power corresponding to any vehicle speed interval as the target power generation power.

4. The method according to claim 2, wherein The step of obtaining the target power generation power according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed interval includes: Based on the current rotational speed value and the current power generation power of the vehicle, calculating the original torque of any vehicle speed interval, and obtaining the target torque of any vehicle speed interval according to the torque change amount corresponding to the torque control cut-in point of any vehicle speed interval and the original torque; Calculating and obtaining the target power generation power according to the target torque of any vehicle speed interval and the current rotational speed value.

5. The method according to any one of claims 1 to 4, characterized in that, Also including: When the vehicle speed change amount of the vehicle within a preset time period exceeds the vehicle speed threshold, determining the target power generation power according to the change of the rotational speed value of the vehicle, so that the range extender of the vehicle generates electricity according to the target power generation power; when the vehicle speed change amount of the vehicle within a preset time period does not exceed the vehicle speed threshold, determining the target power generation power according to the torque change of the vehicle, so that the range extender of the vehicle generates electricity according to the target power generation power.

6. A power generation power control device for a range extender, characterized in that, Including: A processing module, configured to determine the rotational speed values of the vehicle in different vehicle speed intervals based on the power demand simulation data of the vehicle at different vehicle speeds; A determining module, configured to construct torque control cut-in points for the vehicle in different vehicle speed intervals and determine the torque change amount corresponding to each torque control cut-in point; A control module, configured to, when the actual vehicle speed reaches any vehicle speed interval and does not reach the vehicle speed corresponding to the torque control cut-in point of this vehicle speed interval, obtain a target power generation power according to the actual rotational speed value corresponding to this vehicle speed interval, so that the range extender of the vehicle generates power according to the target power generation power; when the actual vehicle speed of the vehicle reaches above the vehicle speed corresponding to the torque control cut-in point of any vehicle speed interval, obtain the target power generation power according to the torque change amount corresponding to the torque control cut-in point of this vehicle speed interval, so that the range extender of the vehicle generates power according to the target power generation power.

7. The device according to claim 6, wherein The processing module is specifically configured to: Determine the power generation power of the vehicle in different vehicle speed intervals based on the power demand simulation data of the vehicle at different vehicle speeds; Determine the rotational speed values of the vehicle at different power generation powers based on the external characteristics of the range extender of the vehicle; Obtain the rotational speed values of the vehicle in different vehicle speed intervals according to the power generation power of the vehicle in different vehicle speed intervals and the rotational speed values of the vehicle at different power generation powers.

8. The device according to claim 7, characterized in that, The step of obtaining the target power generation power according to the actual rotational speed value corresponding to any vehicle speed interval in the control module includes: Based on the rotational speed values of the vehicle at different power generation powers, obtain and use the power generation power corresponding to any vehicle speed interval as the target power generation power.

9. A range extender power generation control device, characterized in that, It includes: A controller; A memory, configured to store one or more programs, and when the one or more programs are executed by the controller, enable the controller to implement the range extender power generation power control method described in any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that, At least one executable instruction is stored in the storage medium, and when the executable instruction runs on the range extender power generation power control device / equipment, it enables the range extender power generation power control device / equipment to perform the operations of the range extender power generation power control method described in any one of claims 1-5.

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