Range extender power generation following control method, device, electronic equipment and medium

Abstract

The present invention relates to a range extender power generation following control method, device, electronic device and medium, the method comprising: obtaining the theoretical power generation current and actual power generation current of the generator set, and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current; if each sensor is in normal working condition, calculating the actual power generation power of the generator at the target time; calculating the first response time required for the generator set to respond to the target power generation at the first time based on the pre-constructed response time curve; calculating the influence factor of the generator set responding to the target power generation on the actual power generation power of the generator at the target time based on the first response time, and calculating the maximum value of the generator set responding to the target power generation at the target time based on the influence factor; judging the normality of the power generation following of the generator set based on the maximum value of the generator set responding to the target power generation at the target time and the actual power generation. The present invention improves the monitoring and identification of power generation followability.

Description

Technical Field

[0001] The present invention relates to the technical field of range-extended vehicle control, and in particular to a range-extender power generation follow-up control method, device, electronic equipment and medium. Background Art

[0002] Range extenders are an important component of electric vehicles. Due to mechanical, hardware or software failures in the range extender, the range extender may not respond to the target power generation sent to it by the vehicle controller. Therefore, the vehicle controller must monitor the normality of the real-time power generation of the range extender. If the vehicle controller cannot accurately monitor the generator power of the range extender, the vehicle controller cannot coordinate the normal operation of the motor drive and the high-voltage system energy management, resulting in abnormal operation of the high-voltage system, and then causing the power battery to overcharge or over-discharge. Summary of the invention

[0003] In view of this, it is necessary to provide a range extender power generation following control method, device, electronic device and medium to solve the problem of low monitoring and identification accuracy of target power generation following, resulting in abnormal operation of the high-voltage system.

[0004] In order to solve the above problems, in a first aspect, the present invention provides a range extender power following control method, comprising:

[0005] Obtaining a theoretical power generation current and an actual power generation current of the power generation set, and determining a working condition of each sensor based on the theoretical power generation current and the actual power generation current;

[0006] If all sensors are in normal working condition, calculate the actual power generated by the generator at the target time;

[0007] Calculating a first response time required for the generator set to respond to the target power generation at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;

[0008] Calculate the influence factor of the generator set's response to the target power generation on the actual power generation of the generator at the target time based on the first response time, and calculate the maximum value of the generator set's response to the target power generation at the target time based on the influence factor;

[0009] The normality of the power generation of the generator set following is determined based on the maximum value of the power generation of the generator set in response to the target power generation at the target time and the actual power generation of the generator at the target time.

[0010] Furthermore, the obtaining of the theoretical power generation current of the generator set includes:

[0011] The theoretical power generation current of the generator set is calculated based on the actual speed, actual torque and generator efficiency:

[0012]

[0013] Among them, I(k) theory is the theoretical current of the generator set at the target time, U is the total voltage of the power battery, w(k) act is the actual speed of the generator set at the target time, T(k) act is the actual torque of the generator set at the target time, is the generator efficiency of the generator set at the actual speed and actual torque, and k is the target time.

[0014] Further, the determining the working condition of each sensor based on the theoretical power generation current and the actual power generation current includes:

[0015] Obtain the actual power generation current of the generator set at the target time, and calculate the absolute value of the difference between the actual power generation current and the theoretical power generation current;

[0016] The normality coefficient of each sensor of the generator set at the target time is calculated based on the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time:

[0017]

[0018] Among them, β(k) is the normality coefficient of each sensor of the generator set at the target time, ΔI(K)1 is the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time, and I1 is the normality threshold of the difference between the actual power generation current and the theoretical power generation current;

[0019] The normality of the generator speed sensor, torque sensor and current sensor is determined based on the normality coefficient of each sensor of the generator set at the target time.

[0020] Furthermore, the pre-built response time curve is:

[0021] t(p)=α*p+b

[0022] Wherein, t(p) is the response time required for the generator power of the generator set to change to p, p is the generator power of the generator set, α is the response time calculation coefficient of the first generator set, and b is the response time calculation coefficient of the second generator set;

[0023] The first response time required for the generator set to respond to the target power generation at the first moment is calculated based on the pre-built response time curve:

[0024] t(p(j) target )=α*p(j)target +b

[0025] Among them, t(p(j) target ) is the first response time required for the generator set to respond to the target power generation at the first moment, p(j) target is the target power generation that the generator set responds to at the first moment, and j is the first moment.

[0026] Furthermore, the influence factor of the generator set response target power generation calculated based on the first response time on the actual power generation of the generator at the target time is:

[0027]

[0028] Among them, γ(j,k) is the influence factor of the generator set's response to the target power generation at the first moment on the actual power generation at the target moment, and Δt is the time difference between the first moment and the target moment;

[0029] The maximum value of the generator set responding to the target power generation at the target time is calculated based on the influencing factor:

[0030]

[0031] Among them, P(k) actmin P(k) is the minimum value of the target power generated by the generator set at the target time; actmmax It is the maximum value of the target power generated by the generator set at the target time.

[0032] Furthermore, the method of determining the normality of the power generation of the generator set based on the maximum value of the target power generation of the generator set in response to the target time and the actual power generation of the generator at the target time includes:

[0033] The absolute value of the difference between the maximum and minimum values ​​of the target power generation of the generator set at the target time and the actual power generation is calculated as follows:

[0034]

[0035] Where, ΔP(k) actmax ΔP(k) is the absolute value of the difference between the maximum value of the target power generation of the generator set at the target time and the actual power generation. actmin P(k) is the absolute value of the difference between the minimum value of the target power generation of the generator set at the target time and the actual power generation. act is the actual power generated by the generator at the target time;

[0036] Calculate the average of the accumulated absolute values;

[0037] If the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation power of the generator set in response to the target time and the actual power generation power is not greater than the normal threshold value of the cumulative average value, and the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation power of the generator set in response to the target time and the actual power generation power is not greater than the normal threshold value of the cumulative average value, it is determined that the generator set is following the target power generation power normally;

[0038] If the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation responding to the generator set at the target time and the actual power generation is greater than the normal threshold of the cumulative average value, or the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation responding to the generator set at the target time and the actual power generation is greater than the normal threshold of the cumulative average value, it is determined that the generator set cannot follow the target power generation normally.

[0039] Furthermore, the method further comprises:

[0040] If it is determined that the generator set cannot normally follow the target power generation, the generator set is shut down to prohibit the generator from working.

[0041] In a second aspect, the present invention further provides a range extender power generation power following control device, comprising:

[0042] A first determination module is used to obtain a theoretical power generation current and an actual power generation current of the generator set, and determine a working condition of each sensor based on the theoretical power generation current and the actual power generation current;

[0043] The first calculation module is used to calculate the actual power generation of the generator at the target time if all sensors are in normal working condition;

[0044] A second calculation module is used to calculate a first response time required for the generator set to respond to the target power generation at a first moment based on a pre-built response time curve, wherein the first moment is a moment before the target moment;

[0045] A third calculation module is used to calculate the influence factor of the generator set's response to the target power generation on the actual power generation of the generator at the target time based on the first response time, and calculate the maximum value of the generator set's response to the target power generation at the target time based on the influence factor;

[0046] The second determination module is used to determine the normality of the power generation of the generator set based on the maximum value of the target power generation to which the generator set responds at the target time and the actual power generation of the generator at the target time.

[0047] In a third aspect, the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps in the above-mentioned range extender power generation following control method when executing the computer program.

[0048] In a fourth aspect, the present invention further provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned range extender power generation following control method are implemented.

[0049] The beneficial effects of adopting the above embodiment are:

[0050] The present invention first determines the working condition of each sensor according to the theoretical power generation current and the actual power generation current of the generator set, thereby avoiding the problem that the generator power cannot be normally identified due to errors in the data collected between the sensors; then the time to respond to each target generator power is calculated according to the characteristics of the response time of the generator set, and based on the maximum value of the generator set responding to the target power at the target time and the actual power generation power of the generator at the target time, a single interference and thus misjudgment in the monitoring process is avoided, which greatly improves the real-time and accuracy of the range extender starting power monitoring, promptly determines whether the high-voltage system is working abnormally, avoids the failure of overcharging or over-discharging of the power battery, and improves the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A schematic flow chart of an embodiment of a range extender power following control method provided by the present invention;

[0052] Figure 2 A schematic structural diagram of an embodiment of a range extender power generation following control device provided by the present invention;

[0053] Figure 3 The present invention provides a schematic structural diagram of an electronic device. DETAILED DESCRIPTION

[0054] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0055] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. Reference to "embodiments" in this article means that the specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] See also Figure 1 , Figure 1 A flow chart of an embodiment of a range extender power generation following control method provided by the present invention is provided. A specific embodiment of the present invention discloses a range extender power generation following control method, including:

[0057] Step S101: obtaining the theoretical power generation current and the actual power generation current of the generator set, and determining the working status of each sensor based on the theoretical power generation current and the actual power generation current;

[0058] Step S102: If all sensors are in normal working condition, calculate the actual power generation of the generator at the target time;

[0059] Step S103: calculating a first response time required for the generator set to respond to the target power generation at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;

[0060] Step S104: calculating the influence factor of the generator set's response to the target power generation on the actual power generation of the generator at the target time based on the first response time, and calculating the maximum value of the generator set's response to the target power generation at the target time based on the influence factor;

[0061] Step S105: determining the normality of the power generation of the generator set based on the maximum value of the target power generation of the generator set in response to the target time and the actual power generation of the generator at the target time.

[0062] The present invention first determines the working condition of each sensor according to the theoretical power generation current and the actual power generation current of the generator set, thereby avoiding the problem that the generator power cannot be normally identified due to errors in the data collected between the sensors; then the time to respond to each target generator power is calculated according to the characteristics of the response time of the generator set, and based on the maximum value of the generator set responding to the target power at the target time and the actual power generation power of the generator at the target time, a single interference and thus misjudgment in the monitoring process is avoided, which greatly improves the real-time and accuracy of the range extender starting power monitoring, promptly determines whether the high-voltage system is working abnormally, avoids the failure of overcharging or over-discharging of the power battery, and improves the safety of the vehicle.

[0063] In one embodiment of the present invention, obtaining the theoretical power generation current of the generator set includes:

[0064] The theoretical power generation current of the generator set is calculated based on the actual speed, actual torque and generator efficiency:

[0065]

[0066] Among them, I(k) theory is the theoretical current of the generator set at the target time, U is the total voltage of the power battery, w(k) act is the actual speed of the generator set at the target time, T(k) act is the actual torque of the generator set at the target time, is the generator efficiency of the generator set at the actual speed and actual torque, and k is the target time.

[0067] It can be understood that the actual speed of the generator set at the target time can be obtained through the speed sensor, the actual torque of the generator set at the target time can be obtained through the torque sensor, and the generator efficiency of the generator set at the actual speed and actual torque can be obtained through bench tests.

[0068] In one embodiment of the present invention, determining the working condition of each sensor based on the theoretical power generation current and the actual power generation current includes:

[0069] Obtain the actual power generation current of the generator set at the target time, and calculate the absolute value of the difference between the actual power generation current and the theoretical power generation current;

[0070] The normality coefficient of each sensor of the generator set at the target time is calculated based on the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time:

[0071]

[0072] Among them, β(k) is the normality coefficient of each sensor of the generator set at the target time, ΔI(K)1 is the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time, and I1 is the normality threshold of the difference between the actual power generation current and the theoretical power generation current;

[0073] The normality of the generator speed sensor, torque sensor and current sensor is determined based on the normality coefficient of each sensor of the generator set at the target time.

[0074] It can be understood that the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time is:

[0075] ΔI(k)1=|I(k) theory -I(k) act |

[0076] I(k) act is the actual current of the generator set at the target time, and ΔI(K)1 is the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time.

[0077] The normality coefficients of the generator speed sensor, torque sensor and current sensor can be calculated based on the absolute value, and then the correctness of the data collected by the generator speed sensor, torque sensor and current sensor at that moment can be judged through the normality coefficients of each sensor.

[0078] Specifically, first calculate the percentage of time that the sensor works normally within the entire time range of the generator set:

[0079]

[0080] If Δt≥Δt1, that is, the percentage of time during which the sensor operates normally within the entire time range of the generator set is not less than the threshold of the percentage of time during which the sensor operates normally within the entire time range of the generator set, then the speed sensor, torque sensor and current sensor of the generator set are all normal.

[0081] If all sensors are in normal working condition, calculate the actual power generated by the generator at the target time:

[0082] P(k) act =U*I(k) act

[0083] Among them, P(k) act It is the actual power generation of the generator set at the target time.

[0084] If Δt<Δt1, that is, the percentage of time that the sensor works normally within the entire time range of the generator set is less than the threshold of the percentage of time that the sensor works normally within the entire time range of the generator set, then the speed sensor, torque sensor and current sensor of the generator set are faulty, and the generator set cannot work normally and cannot follow the target power generation normally. At this time, the generator set should be shut down and its generator should be disabled to avoid abnormal operation of the generator causing safety accidents in the high-voltage system.

[0085] In one embodiment of the present invention, the pre-built response time curve is:

[0086] t(p)=α*p+b

[0087] Wherein, t(p) is the response time required for the generator power of the generator set to change to p, p is the generator power of the generator set, α is the response time calculation coefficient of the first generator set, and b is the response time calculation coefficient of the second generator set;

[0088] The first response time required for the generator set to respond to the target power generation at the first moment is calculated based on the pre-built response time curve:

[0089] t(p(j) target )=α*p(j) target +b

[0090] Among them, t(p(j) target ) is the first response time required for the generator set to respond to the target power generation at the first moment, p(j) target is the target power generation that the generator set responds to at the first moment, and j is the first moment.

[0091] It is understandable that the pre-built response time curve can be calculated based on the characteristics of the generator set according to the bench test. Specifically, the target power generation is directly stepped from 0 to i*Δp using the bench equipment and the actual t required for the actual power generation of the generator set to change to i*Δp is recorded. i When i increases from 1 to n, n*Δp is equal to the maximum power generation power P of the generator. max , and use the least square method to obtain the time curve required for the power response of the generator set. Further, according to (i*Δp, t i ) Using the least squares method, we can know that:

[0092]

[0093] Then, the first response time required for the generator set to respond to the target power generation at the first moment is calculated in real time: t(p(j) target )=α*p(j) target +b.

[0094] In one embodiment of the present invention, the influence factor of the generator set response target power generation on the actual power generation of the generator at the target time is calculated based on the first response time:

[0095]

[0096] Among them, γ(j,k) is the influence factor of the generator set's response to the target power generation at the first moment on the actual power generation at the target moment, and Δt is the time difference between the first moment and the target moment;

[0097] The maximum value of the generator set responding to the target power generation at the target time is calculated based on the influencing factors:

[0098]

[0099] Among them, P(k) actmin P(k) is the minimum value of the target power generated by the generator set at the target time; actmmax It is the maximum value of the target power generated by the generator set at the target time.

[0100] It can be understood that the first response time required for the generator set to respond to the target power generation at the first moment can be used to determine whether there is an impact on the actual power generation at the subsequent target moment. Specifically, the judgment can be made based on the impact factor, and then the maximum and minimum values ​​of the target power responded at the target moment can be calculated based on the impact factor of the generator set responding to the target power generation at the first moment on the actual power generation at the target moment.

[0101] In one embodiment of the present invention, judging the normality of the power generation of the generator set based on the maximum value of the target power generation of the generator set in response to the target time and the actual power generation of the generator at the target time includes:

[0102] The absolute value of the difference between the maximum and minimum values ​​of the target power generation of the generator set at the target time and the actual power generation is calculated as follows:

[0103]

[0104] Where, ΔP(k) actmax ΔP(k) is the absolute value of the difference between the maximum value of the target power generation of the generator set at the target time and the actual power generation. actmin P(k) is the absolute value of the difference between the minimum value of the target power generation of the generator set at the target time and the actual power generation. act is the actual power generated by the generator at the target time;

[0105] Calculate the average mean after the absolute value accumulation;

[0106] If the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation power of the generator set in response to the target time and the actual power generation power is not greater than the normal threshold value of the cumulative average value, and the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation power of the generator set in response to the target time and the actual power generation power is not greater than the normal threshold value of the cumulative average value, it is determined that the generator set is following the target power generation power normally;

[0107] If the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation responding to the generator set at the target time and the actual power generation is greater than the normal threshold of the cumulative average value, or the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation responding to the generator set at the target time and the actual power generation is greater than the normal threshold of the cumulative average value, it is determined that the generator set cannot follow the target power generation normally.

[0108] It is understandable that the normality of the power generation following of the generator set can be determined based on the maximum and minimum values ​​of the target power generation to which the generator set responds at the target time and the relative magnitude relationship between the actual power generation.

[0109] First, calculate the absolute value of the difference between the maximum and minimum values ​​of the target power generation of the generator set at time K and the actual power generation:

[0110]

[0111] Then, the average value after the accumulation of absolute values ​​is used to determine whether the generator set is following the target generator power normally:

[0112]

[0113] Among them, ΔP actmax ΔP is the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation of the generator set at the target time and the actual power generation; actmin is the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation to which the generator set responds at time K and the actual power generation;

[0114] If ΔP actmax ≤ΔP act And ΔP actmin ≤ΔP act That is, the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation responding to the generator set at the target time and the actual power generation is not greater than the normal threshold of the cumulative average value, and the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation responding to the generator set at the target time and the actual power generation is not greater than the normal threshold of the cumulative average value, and it is determined that the generator set is working normally and can follow the target power generation normally.

[0115] If ΔP actmax >ΔP act or ΔP actmin ≤ΔP act That is, the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation and the actual power generation of the generator set in response to the target time is greater than the normal threshold value of the cumulative average value, or the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation and the actual power generation of the generator set in response to the target time is greater than the normal threshold value of the cumulative average value, then the generator set is not working properly and cannot follow the target power generation normally. At this time, the generator set should be shut down and its generator should be disabled to avoid abnormal operation of the generator and cause safety accidents in the high-voltage system.

[0116] In order to better implement the range extender power generation following control method in the embodiment of the present invention, based on the range extender power generation following control method, correspondingly, please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of an embodiment of a range extender power generation following control device provided by the present invention. The embodiment of the present invention provides a range extender power generation following control device 200, including:

[0117] The first determination module 201 is used to obtain the theoretical power generation current and the actual power generation current of the generator set, and determine the working status of each sensor based on the theoretical power generation current and the actual power generation current;

[0118] The first calculation module 202 is used to calculate the actual power generation of the generator at the target time if all sensors are in normal working condition;

[0119] A second calculation module 203 is used to calculate a first response time required for the generator set to respond to the target power generation at a first moment based on a pre-built response time curve, wherein the first moment is a moment before the target moment;

[0120] The third calculation module 204 is used to calculate the influence factor of the generator set's response to the target power generation on the actual power generation of the generator at the target time based on the first response time, and calculate the maximum value of the generator set's response to the target power generation at the target time based on the influence factor;

[0121] The second determination module 205 is used to determine the normality of the power generation of the generator set based on the maximum value of the target power generation of the generator set in response to the target time and the actual power generation of the generator at the target time.

[0122] It should be noted here that: the device 200 provided in the above embodiment can implement the technical solutions described in the above method embodiments. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above method embodiments, which will not be repeated here.

[0123] Based on the above-mentioned range extender power generation following control method, an embodiment of the present invention also provides an electronic device accordingly, including: a processor and a memory, and a computer program stored in the memory and executable on the processor; when the processor executes the computer program, the steps in the range extender power generation following control method as in the above-mentioned embodiments are implemented.

[0124] Figure 3 3 shows a schematic diagram of the structure of an electronic device 300 suitable for implementing the embodiment of the present invention. The electronic device in the embodiment of the present invention may include but is not limited to mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle terminals (such as vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0125] The electronic device includes: a memory and a processor, wherein the processor here may be referred to as a processing device 301 hereinafter, and the memory may include at least one of a read-only memory (ROM) 302, a random access memory (RAM) 303, and a storage device 308 hereinafter, as shown below:

[0126] like Figure 3 As shown, the electronic device 300 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 301, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 302 or a program loaded from a storage device 308 into a random access memory (RAM) 303. In the RAM 303, various programs and data required for the operation of the electronic device 300 are also stored. The processing device 301, the ROM 302, and the RAM 303 are connected to each other via a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0127] Typically, the following devices may be connected to the I / O interface 305: input devices 306 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; output devices 307 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 308 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 309. The communication devices 309 may allow the electronic device 300 to communicate with other devices wirelessly or by wire to exchange data. Although Figure 3The electronic device 300 is shown with various devices, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0128] In particular, according to an embodiment of the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program includes a program code 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 device 309, or installed from the storage device 308, or installed from the ROM 302. When the computer program is executed by the processing device 301, the above-mentioned functions defined in the method of the embodiment of the present invention are executed.

[0129] Based on the above-mentioned range extender power generation following control method, an embodiment of the present invention also provides a computer-readable storage medium accordingly, which stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the range extender power generation following control method as described in the above-mentioned embodiments.

[0130] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0131] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A range extender power generation power following control method, characterized in that: include: Obtaining a theoretical power generation current and an actual power generation current of the power generation set, and determining a working condition of each sensor based on the theoretical power generation current and the actual power generation current; If all sensors are in normal working condition, calculate the actual power generated by the generator at the target time; Calculating a first response time required for the generator set to respond to the target power generation at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment; Calculate the influence factor of the generator set's response to the target power generation on the actual power generation of the generator at the target time based on the first response time, and calculate the maximum value of the generator set's response to the target power generation at the target time based on the influence factor; The normality of the power generation of the generator set following is determined based on the maximum value of the power generation of the generator set in response to the target power generation at the target time and the actual power generation of the generator at the target time.

2. The range extender power following control method according to claim 1, characterized in that: The step of obtaining the theoretical power generation current of the generator set comprises: Calculate the theoretical power generation current of the generator set based on the actual speed and actual torque of the generator and the generator efficiency: Among them, I(k) theory is the theoretical current of the generator set at the target time, U is the total voltage of the power battery, w(k) act is the actual speed of the generator set at the target time, T(k) act is the actual torque of the generator set at the target time, η(w(k) act ,T(k) act ) is the generator efficiency of the generator set at the actual speed and actual torque, and k is the target time.

3. The range extender power following control method according to claim 2, characterized in that: The determining the working condition of each sensor based on the theoretical power generation current and the actual power generation current includes: Obtain the actual power generation current of the generator set at the target time, and calculate the absolute value of the difference between the actual power generation current and the theoretical power generation current; The normality coefficient of each sensor of the generator set at the target time is calculated based on the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time: Among them, β(k) is the normality coefficient of each sensor of the generator set at the target time, ΔI()1 is the absolute value of the difference between the actual power generation current and the theoretical power generation current of the generator set at the target time, and I1 is the normality threshold of the difference between the actual power generation current and the theoretical power generation current; The normality of the generator speed sensor, torque sensor and current sensor is determined based on the normality coefficient of each sensor of the generator set at the target time.

4. The range extender power following control method according to claim 1, characterized in that: The pre-built response time curves: t(p)=α*p+b Wherein, t(p) is the response time required for the generator power of the generator set to change to p, p is the generator power of the generator set, α is the response time calculation coefficient of the first generator set, and b is the response time calculation coefficient of the second generator set; Calculate the first response time required for the generator set to respond to the target power generation at the first moment based on the pre-built response time curve: t(p(j) target )=α*p(j) target + Among them, t(p(j) target ) is the first response time required for the generator set to respond to the target power generation at the first moment, p(j) target is the target power generation that the generator set responds to at the first moment, and j is the first moment.

5. The range extender power following control method according to claim 4, characterized in that: The influence factor of the generator set response target power generation on the actual power generation of the generator at the target time calculated based on the first response time is: Among them, γ(j,k) is the influence factor of the generator set's response to the target power generation at the first moment on the actual power generation at the target moment, and Δt is the time difference between the first moment and the target moment; The maximum value of the generator set responding to the target power generation at the target time is calculated based on the influencing factor: Among them, P(k) actmin P(k) is the minimum value of the target power generated by the generator set at the target time; actmmax It is the maximum value of the target power generated by the generator set at the target time.

6. The range extender power following control method according to claim 5, characterized in that: The method of determining the normality of the power generation of the generator set based on the maximum value of the target power generation of the generator set in response to the target time and the actual power generation of the generator at the target time includes: Calculate the absolute value of the difference between the maximum and minimum values ​​of the target power generation of the generator set at the target time and the actual power generation: Where, ΔP(k) actmax ΔP(k) is the absolute value of the difference between the maximum value of the target power generation of the generator set at the target time and the actual power generation. actmin P(k) is the absolute value of the difference between the minimum value of the target power generation of the generator set at the target time and the actual power generation. act is the actual power generated by the generator at the target time; Calculate the average of the accumulated absolute values; If the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation power of the generator set in response to the target time and the actual power generation power is not greater than the normal threshold value of the cumulative average value, and the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation power of the generator set in response to the target time and the actual power generation power is not greater than the normal threshold value of the cumulative average value, it is determined that the generator set is following the target power generation power normally; If the first cumulative average value of the absolute value of the difference between the maximum value of the target power generation responding to the generator set at the target time and the actual power generation is greater than the normal threshold of the cumulative average value, or the second cumulative average value of the absolute value of the difference between the minimum value of the target power generation responding to the generator set at the target time and the actual power generation is greater than the normal threshold of the cumulative average value, it is determined that the generator set cannot follow the target power generation normally.

7. The range extender power following control method according to claim 6, characterized in that: The method further comprises: If it is determined that the generator set cannot normally follow the target power generation, the generator set is shut down to prohibit the generator from working.

8. A range extender power generation power following control device, characterized in that: include: A first determination module is used to obtain a theoretical power generation current and an actual power generation current of the generator set, and determine a working condition of each sensor based on the theoretical power generation current and the actual power generation current; The first calculation module is used to calculate the actual power generation of the generator at the target time if all sensors are in normal working condition; A second calculation module is used to calculate a first response time required for the generator set to respond to the target power generation at a first moment based on a pre-built response time curve, wherein the first moment is a moment before the target moment; A third calculation module is used to calculate the influence factor of the generator set's response to the target power generation on the actual power generation of the generator at the target time based on the first response time, and calculate the maximum value of the generator set's response to the target power generation at the target time based on the influence factor; The second determination module is used to determine the normality of the power generation of the generator set based on the maximum value of the target power generation to which the generator set responds at the target time and the actual power generation of the generator at the target time.

9. An electronic device, characterized in that: It includes a memory and a processor, wherein the memory is used to store a program; the processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the range extender power generation following control method described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: Used to store computer-readable programs or instructions, which, when executed by a processor, can implement the steps in the range extender power generation following control method described in any one of claims 1 to 7 above.

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