A method and control system for controlling generator output voltage

Abstract

The present application discloses a method and control system for controlling the output voltage of a generator. The method is applied to a controller ECU, which is configured to perform the following steps: establishing a connection with the generator; determining corresponding control information based on the acquired vehicle's power level, operating conditions, and vehicle power consumption, and sending the corresponding control information to the generator to control the generator to output a corresponding voltage. Because the generator consumes the engine's kinetic energy to generate electricity, associating the generator's output voltage with the vehicle's state enables the generator to output different voltages depending on the vehicle's operating state, thereby reducing the engine's kinetic energy consumption and achieving the goal of energy conservation and emission reduction.

Description

Technical Field

[0001] The present application relates to the technical field of generator control, and in particular to a method and a control system for controlling the output voltage of a generator. Background Art

[0002] When a conventional generator is working, Figure 1 As shown in the figure, after the ignition switch is turned on, the battery powers the excitation winding. When the amplitude of the signal detected by the P-terminal detection module reaches the set threshold, the regulator's control switch module opens, and the regulator's internal B+ terminal provides additional excitation current (220mA) to the D+ terminal through a voltage resistor. The generator begins to operate, and the generator voltage increases with the speed. When the generator voltage reaches the battery electromotive force, the generator changes from external excitation to self-excitation.

[0003] When the generator output voltage rises to the set upper regulation limit, the generator regulator starts to work. The regulator controls the disconnection of the generator's magnetic field circuit, causing the generator output voltage to decrease. When the generator output voltage drops to the lower regulation limit, the magnetic field circuit is connected, and the generator voltage increases. This operation is repeated, thereby controlling the generator voltage within a certain range, generally 28.3±0.3V.

[0004] According to the traditional operating principle of a generator, the regulator adjusts the generator based on its output voltage. In a vehicle, the generator is connected in parallel with the battery. As long as the battery voltage is lower than the generator voltage, the generator will charge the battery. This generator's operating logic is too simplistic and fails to connect to the vehicle's overall state. The generator continues to generate and output high voltage even when the battery level is sufficient or when no power is required. Generating electricity requires engine kinetic energy, so continuing to generate and output high voltage even when the battery level is sufficient or when no power is required results in additional energy consumption.

[0005] Therefore, how to link the operation of the generator with the status of the entire vehicle to achieve the goal of reducing energy consumption is a technical problem that needs to be solved. Summary of the Invention

[0006] The main purpose of this application is to provide a control method and control system for the generator output voltage, aiming to solve the technical problem that there is no correlation between the generator state and the vehicle state, and the generator continues to work and output high voltage when the level of power is sufficient or no power generation is required, which will cause additional energy consumption.

[0007] In a first aspect, the present application provides a method for controlling a generator output voltage, which is applied to a controller ECU, wherein the controller ECU is configured to perform the following steps:

[0008] Establish a connection to the generator;

[0009] Corresponding control information is determined based on the acquired vehicle power, operating conditions, and vehicle power consumption, and is sent to the generator to control the generator to output a corresponding voltage.

[0010] In some embodiments, determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and sending the information to the generator specifically includes the following steps:

[0011] Determining whether the battery level of the vehicle is within a power-deficient range, a sufficient range, or a power-over range;

[0012] Determining whether the operating condition of the vehicle is an acceleration condition, a constant speed condition, or a deceleration condition;

[0013] Determining whether the vehicle's power consumption is within a high power consumption range, a medium power consumption range, and a low power consumption range;

[0014] Corresponding control information is determined according to different combinations of the power of the entire vehicle, the operating conditions, and the power consumption of the entire vehicle, and is sent to the generator.

[0015] In some embodiments,

[0016] The determining corresponding control information according to different combinations of the vehicle's power, the operating conditions, and the vehicle's power consumption, and sending the corresponding control information to the generator specifically includes the following steps:

[0017] When the battery level of the vehicle is in a low-battery range, or when the battery level of the vehicle is in a medium-battery range and the vehicle is in a decelerating driving condition, or when the battery level of the vehicle is in a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is in a high-battery range, determining to send control information for increasing the output voltage to the generator;

[0018] Alternatively, when the battery level of the vehicle is within a sufficient range and the vehicle is in an accelerating driving condition and the vehicle power consumption is within a high power consumption range, or when the battery level of the vehicle is within a sufficient range and the vehicle is in a constant speed driving condition, or when the battery level of the vehicle is within a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is within a medium power consumption range or a high power consumption range, determining to send control information for a normal output voltage to the generator;

[0019] Alternatively, when the battery level of the vehicle is in a sufficient range and the vehicle is in an acceleration operating condition and the vehicle power consumption is in a medium power consumption range or a low power consumption range, or when the battery level of the vehicle is in a surplus range and the vehicle is in a constant speed driving condition and the vehicle power consumption is in a high power consumption range or a medium power consumption range, determining to send control information for reducing the output voltage to the generator;

[0020] Alternatively, when the battery power of the entire vehicle is in the excess range and the entire vehicle is in an accelerated driving condition, or when the battery power of the entire vehicle is in the excess range and the entire vehicle is in a uniform speed driving condition and the battery power consumption of the entire vehicle is in a low battery power consumption range, it is determined to send control information to the generator to stop outputting voltage.

[0021] In some embodiments, the following steps are further performed:

[0022] Response time control information is sent to the generator according to the acquired operating state of the engine to control the power generation response time of the generator.

[0023] In some embodiments, the step of sending response time control information to the generator based on the acquired operating status of the engine to control the power generation response time of the generator specifically includes the following steps:

[0024] If the rotation speed of the engine is less than the set rotation speed, response time control information is sent to the generator to extend the response time of the excitation terminal of the generator.

[0025] In some embodiments, the following steps are further performed:

[0026] If the acquired ambient temperature exceeds a set temperature threshold, the output stop control information is sent to the engine to control the generator to stop output.

[0027] In some embodiments, the following steps are further performed:

[0028] Connected to the generator regulator via LIN bus;

[0029] The control information is sent to the regulator via the LIN bus, so that the regulator controls the output voltage of the generator according to the control information.

[0030] In some embodiments, the following steps are further performed:

[0031] The actual output voltage information of the generator and the speed information of the generator returned by the regulator are received, and it is determined whether the generator operates according to the control information.

[0032] In some embodiments, the control information includes:

[0033] The target output voltage of the generator.

[0034] In a second aspect, the present application further provides a generator output voltage control system, the system comprising: a controller ECU; the ECU is configured to:

[0035] Establish a connection to the generator;

[0036] Corresponding control information is determined based on the acquired vehicle power, operating conditions, and vehicle power consumption, and is sent to the generator to control the generator to output a corresponding voltage.

[0037] The present application provides a method and control system for controlling the output voltage of a generator. The method is applied to a controller ECU, wherein the controller ECU is configured to perform the following steps: establishing a connection with the generator; determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and transmitting the corresponding control information to the generator to control the generator to output a corresponding voltage. Because the generator consumes the kinetic energy of the engine to generate electricity, associating the generator's output voltage with the vehicle's state enables the generator to output different voltages depending on the vehicle's operating state, thereby reducing the engine's kinetic energy consumption and achieving the goal of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 This is the circuit diagram of a traditional generator;

[0040] Figure 2 A flow chart of a method for controlling the output voltage of a generator provided in an embodiment of the present application;

[0041] Figure 3 This is the circuit schematic diagram of the generator connected to the controller ECU;

[0042] Figure 4 A schematic diagram of a generator output voltage control system provided in an embodiment of the present application;

[0043] Figure 5 This is a schematic diagram of LIN bus information transmission;

[0044] Figure 6 This is a flow chart for controlling the generator output corresponding voltage.

[0045] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, combined, or partially merged, so the actual execution order may vary depending on the actual situation.

[0048] The present invention provides a method and a control system for controlling the output voltage of a generator, wherein the method can be applied to an electronic controller such as an ECU.

[0049] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0050] Please refer to Figure 2 , Figure 2 A flow chart of a method for controlling the output voltage of a generator provided in an embodiment of the present application. The method is applied to a controller ECU (Electronic Control Unit), which is configured to perform the following steps:

[0051] Step S1, establishing a connection with a generator;

[0052] Step S2: determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and sending the information to the generator to control the generator to output a corresponding voltage.

[0053] Specifically, such as Figure 3 and Figure 4 As shown, the controller ECU is connected to the regulator of the generator through the LIN bus, and sends the control information to the regulator through the LIN bus, so that the regulator controls the output voltage of the generator according to the control information.

[0054] The control information includes a target output voltage of the engine.

[0055] In some embodiments, determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and sending the information to the generator specifically includes the following steps:

[0056] Determining whether the battery level of the vehicle is within a power-deficient range, a sufficient range, or a power-over range;

[0057] Determining whether the operating condition of the vehicle is an acceleration condition, a constant speed condition, or a deceleration condition;

[0058] Determining whether the vehicle's power consumption is within a high power consumption range, a medium power consumption range, and a low power consumption range;

[0059] Corresponding control information is determined according to different combinations of the entire vehicle's power level, the operating conditions, and the entire vehicle's power consumption, and is sent to the generator.

[0060] It is worth noting that the power of the whole vehicle obtained by the ECU is the state of charge (SOC) of the battery of the whole vehicle. The power-deficient interval, sufficient interval and excess interval of the whole vehicle can all be set according to experience or needs. For example, the battery power interval of 0-60% can be set as the power-deficient interval, the power interval of 61%-80% can be set as the sufficient interval, and the power interval of 81%-100% can be set as the excess interval. The speed of the whole vehicle can be monitored by the speed sensor and then sent to the ECU. The ECU determines whether the whole vehicle is currently in an accelerating driving condition, a uniform speed driving condition or a decelerating driving condition. The interval of the whole vehicle power consumption can also be set according to experience or specific needs.

[0061] Specifically, determining corresponding control information according to different combinations of the vehicle's power level, the operating conditions, and the vehicle's power consumption, and sending the corresponding control information to the generator specifically includes the following steps:

[0062] When the vehicle's battery level is in the low-battery range, regardless of the vehicle's driving conditions or power consumption, the ECU determines to send control information to the generator to increase its output voltage, causing the generator to increase its output voltage and quickly charge the battery to maintain battery charge. Alternatively, when the vehicle's battery level is in the medium-battery range and the vehicle is decelerating, regardless of the vehicle's power consumption, the ECU determines to send control information to the generator to increase its output voltage. Because the vehicle is decelerating, the load on the vehicle's engine is low, allowing the generator's output voltage to be increased to charge the battery. Alternatively, when the vehicle's battery level is in the high-battery range and the vehicle is decelerating, the ECU determines to send control information to the generator to increase its output voltage to meet the vehicle's power consumption. When the vehicle is decelerating and the battery charge is not excessive, the ECU controls the generator to increase its output voltage to charge the battery, utilizing braking to regenerate energy.

[0063] Alternatively, when the vehicle's battery level is within a sufficient range, the vehicle is accelerating, and the vehicle's power consumption is within a high power consumption range, the ECU determines to send control information for a normal output voltage to the generator, so that the generator outputs a normal voltage. Alternatively, when the vehicle's battery level is within a sufficient range, the vehicle is traveling at a constant speed, regardless of the vehicle's power consumption range, the ECU determines to send control information for a normal output voltage to the generator. Alternatively, when the vehicle's battery level is within a surplus range, the vehicle is decelerating, and the vehicle's power consumption is within a medium power consumption range or a high power consumption range, the ECU determines to send control information for a normal output voltage to the generator.

[0064] Alternatively, when the vehicle's battery level is in a sufficient range, the vehicle is in an acceleration mode, and the vehicle's power consumption is in a medium or low power consumption range, the ECU determines to send control information to the generator to reduce the output voltage, thereby controlling the generator to reduce the output voltage. Because the battery level is sufficient and the power consumption is in a medium or low power consumption range, this indicates that the current battery level is sufficient for vehicle operation. The vehicle's acceleration mode indicates that the generator is currently under heavy load. Therefore, controlling the generator to reduce the output voltage reduces the engine load, thereby reducing the engine's power consumption and achieving energy conservation and emission reduction. Alternatively, when the vehicle's battery level is in a surplus range, the vehicle is in a constant speed driving mode, and the vehicle's power consumption is in a high or medium power consumption range, the ECU determines to send control information to the generator to reduce the output voltage.

[0065] When the vehicle's battery level is in an excess range and the vehicle is accelerating, regardless of the vehicle's battery usage range, control information is determined to be sent to the generator to stop outputting voltage, thereby controlling the generator to stop generating power. Alternatively, when the vehicle's battery level is in an excess range and the vehicle is traveling at a constant speed, and the vehicle's battery usage is in a low battery usage range, control information is determined to be sent to the generator to stop outputting voltage.

[0066] By controlling the generator voltage according to the vehicle's power level, operating conditions, and power consumption, the generator voltage can be controlled while meeting the vehicle's power consumption, allowing the generator to accurately charge the battery, thereby reducing the engine's load and power consumption, thereby achieving energy conservation and emission reduction effects.

[0067] It is worth noting that the specific voltage values ​​for the engine's increased output voltage, normal output voltage, and decreased output voltage can be set based on experience or demand. In the embodiment of this application, the set value for the increased voltage is 31V, and the set value for the decreased voltage is 22V. The normal output voltage value can be determined within this range based on the specific operating requirements of the vehicle. After receiving control information from the ECU, the regulator changes the generator output voltage by adjusting the excitation current.

[0068] In some embodiments, the following steps are further performed:

[0069] If the acquired ambient temperature exceeds a set temperature threshold, the output stop control information is sent to the engine to control the generator to stop output.

[0070] Specifically, the ECU obtains the temperature of the vehicle's electrical equipment and mechanical equipment through the temperature sensor. If the obtained temperature exceeds the set temperature threshold, the ECU sends control information to the regulator to stop outputting voltage, so that the regulator controls the generator to cut off the excitation current and the generator stops generating electricity, thereby avoiding failure of the generator due to high temperature.

[0071] In some embodiments, response time control information is sent to the generator based on the acquired operating status of the engine to control the power generation response time of the generator.

[0072] Specifically, if the engine speed is less than a set speed, response time control information is sent to the generator to extend the response time of the generator's excitation terminals. When the engine is running at low speed and under heavy load, this increased load response time allows the generator to delay power generation, reducing engine vibration and improving comfort.

[0073] In some embodiments, the ECU sensor is also used to obtain road condition information and determine whether to control the generator to generate electricity or delay generation according to different road conditions. For example, when the entire vehicle is running on a climbing road, the generator load is large, and the magnetic field circuit is cut off, so that the generator does not generate electricity, thereby reducing the torque load of the entire vehicle.

[0074] In some embodiments, the ECU further performs the following steps:

[0075] The actual output voltage information of the generator and the speed information of the generator returned by the regulator are received, and it is determined whether the generator operates according to the control information.

[0076] like Figure 5 As shown in the figure, when the ECU sends control information through the LIN bus to control the output voltage of the generator, the format of the communication frame is divided into master task and slave task.

[0077] The main task consists of a synchronization interval, a synchronization segment, and an identification segment. The synchronization interval is used to notify and synchronize the ECU and the controller when communication begins. The synchronization segment is used to detect and synchronize communication speeds. The identification segment is used to identify the controller's dedicated ID number. Specifically, the ID number can be used to identify different LIN devices on the vehicle, and the LIN device on the vehicle can determine whether it is receiving ECU commands or feeding back information to the ECU.

[0078] The slave task includes a regulator feedback data segment and a data validation segment. The regulator feedback data segment is used to feed regulator data back to the ECU. The regulator can provide the following information to the ECU: duty cycle information of the excitation terminal (used to determine the load condition of the generator), regulator chip temperature, current generator electrical and mechanical structure temperature, excitation current feedback information, and generator speed. The data validation segment verifies the information returned by the regulator to determine whether the generator is operating according to the control information and outputting the target voltage.

[0079] The ECU sends control information to the regulator based on the vehicle's operating conditions to control the regulator to complete the following functions:

[0080] Adjust the voltage to the set value, where the voltage set value range is 22V-31V; control the load response (LRC) time of the generator, where the time range is 0-15S; control the load response (LRC) cutoff speed of the generator, where the speed range is 2400RPM-8000RPM; control the excitation current of the generator, where the excitation current range is 0A-15A; when the temperature exceeds the temperature threshold, control the generator to stop working and perform high-temperature cutoff protection.

[0081] like Figure 6 As shown, the ECU sends control information to change the generator output voltage: the generator output voltage is determined by the excitation current. The greater the excitation current, the greater the generator output voltage.

[0082] Excitation current description: 1. ECU outputs ID = 0x29 signal to set the generator target output voltage. The regulator receives the command and changes the generator output voltage by adjusting the excitation current.

[0083] The regulator outputs an ID=0x11 signal as feedback to the ECU. The TX1 signal message contains the current excitation current information and generator status information of the generator. The regulator can also feedback the actual voltage or speed signal of the generator (ID=0x12) in TX2 according to the needs of the ECU.

[0084] In the test, an ECU was configured according to the aforementioned generator output voltage control method. Two LIN communication generators were installed on a complete vehicle and matched with the vehicle's control circuitry. Testing was conducted according to GB T27840-2011, the fuel consumption measurement method for heavy-duty commercial vehicles. The test showed that under C-WTVC operating conditions, the 80A LIN communication generator reduced power consumption by an average of over 500W, while the 110A LIN communication generator reduced power consumption by an average of over 600W. When these generators were installed in a real vehicle engine, based on a 540 horsepower engine and a fuel consumption of 32 liters per 100 kilometers, the 110A LIN communication generator reduced fuel consumption by 0.064 liters per 100 kilometers. If the vehicle travels 200,000 kilometers annually, the LIN communication generator can save approximately 128 liters of fuel (640 yuan) annually.

[0085] The present application provides a method and control system for controlling the output voltage of a generator. The method is applied to a controller ECU, wherein the controller ECU is configured to perform the following steps: establishing a connection with the generator; determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and transmitting the corresponding control information to the generator to control the generator to output a corresponding voltage. Because the generator consumes the kinetic energy of the engine to generate electricity, associating the generator's output voltage with the vehicle's state enables the generator to output different voltages depending on the vehicle's operating state, thereby reducing the engine's kinetic energy consumption and achieving the goal of energy conservation and emission reduction.

[0086] like Figure 4 As shown, Figure 4 A schematic diagram of a generator output voltage control system provided in an embodiment of the present application.

[0087] The system includes a controller ECU; the ECU is configured to:

[0088] Establish a connection to the generator;

[0089] Corresponding control information is determined based on the acquired vehicle power, operating conditions, and vehicle power consumption, and is sent to the generator to control the generator to output a corresponding voltage.

[0090] The control information includes:

[0091] The target output voltage of the generator.

[0092] The step of determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and sending the information to the generator specifically includes the following steps:

[0093] Determining whether the battery level of the vehicle is within a power-deficient range, a sufficient range, or a power-over range;

[0094] Determining whether the operating condition of the vehicle is an acceleration condition, a constant speed condition, or a deceleration condition;

[0095] Determining whether the vehicle's power consumption is within a high power consumption range, a medium power consumption range, and a low power consumption range;

[0096] Corresponding control information is determined according to different combinations of the power of the entire vehicle, the operating conditions, and the power consumption of the entire vehicle, and is sent to the generator.

[0097] in,

[0098] The determining corresponding control information according to different combinations of the vehicle's power, the operating conditions, and the vehicle's power consumption, and sending the corresponding control information to the generator specifically includes the following steps:

[0099] When the battery level of the vehicle is in a low-battery range, or when the battery level of the vehicle is in a medium-battery range and the vehicle is in a decelerating driving condition, or when the battery level of the vehicle is in a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is in a high-battery range, determining to send control information for increasing the output voltage to the generator;

[0100] Alternatively, when the battery level of the vehicle is within a sufficient range and the vehicle is in an accelerating driving condition and the vehicle power consumption is within a high power consumption range, or when the battery level of the vehicle is within a sufficient range and the vehicle is in a constant speed driving condition, or when the battery level of the vehicle is within a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is within a medium power consumption range or a high power consumption range, determining to send control information for a normal output voltage to the generator;

[0101] Alternatively, when the battery level of the vehicle is in a sufficient range and the vehicle is in an acceleration operating condition and the vehicle power consumption is in a medium power consumption range or a low power consumption range, or when the battery level of the vehicle is in a surplus range and the vehicle is in a constant speed driving condition and the vehicle power consumption is in a high power consumption range or a medium power consumption range, determining to send control information for reducing the output voltage to the generator;

[0102] Alternatively, when the battery power of the entire vehicle is in the excess range and the entire vehicle is in an accelerated driving condition, or when the battery power of the entire vehicle is in the excess range and the entire vehicle is in a uniform speed driving condition and the battery power consumption of the entire vehicle is in a low battery power consumption range, it is determined to send control information to the generator to stop outputting voltage.

[0103] The controller ECU further performs the following steps:

[0104] Response time control information is sent to the generator according to the acquired operating state of the engine to control the power generation response time of the generator.

[0105] The step of sending response time control information to the generator according to the acquired operating status of the engine to control the power generation response time of the generator specifically includes the following steps:

[0106] If the rotation speed of the engine is less than the set rotation speed, response time control information is sent to the generator to extend the response time of the excitation terminal of the generator.

[0107] The ECU further performs the following steps:

[0108] If the acquired ambient temperature exceeds a set temperature threshold, the output stop control information is sent to the engine to control the generator to stop output.

[0109] The ECU further performs the following steps:

[0110] Connected to the generator regulator via LIN bus;

[0111] The control information is sent to the regulator via the LIN bus, so that the regulator controls the output voltage of the generator according to the control information.

[0112] The ECU further performs the following steps:

[0113] The actual output voltage information of the generator and the speed information of the generator returned by the regulator are received, and it is determined whether the generator operates according to the control information.

[0114] It should be noted that those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and modules and units can refer to the corresponding processes in the aforementioned embodiments and will not be repeated here.

[0115] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0116] The serial numbers of the embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments. The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for controlling the output voltage of a generator, characterized in that: It is applied to a controller ECU, which is configured to perform the following steps: Establish a connection to the generator; Determine corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and send the information to the generator to control the generator to output a corresponding voltage; The step of determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and sending the information to the generator specifically includes the following steps: Determining whether the battery level of the vehicle is within a power-deficient range, a sufficient range, or a power-over range; Determining whether the operating condition of the vehicle is an acceleration condition, a constant speed condition, or a deceleration condition; Determining whether the vehicle's power consumption is within a high power consumption range, a medium power consumption range, and a low power consumption range; Determining corresponding control information according to different combinations of the vehicle's power level, the operating conditions, and the vehicle's power consumption, and sending the information to the generator; The step of determining corresponding control information according to different combinations of the vehicle's power level, the operating conditions, and the vehicle's power consumption, and sending the corresponding control information to the generator specifically includes the following steps: When the battery level of the vehicle is in a low-battery range, or when the battery level of the vehicle is in a medium-battery range and the vehicle is in a decelerating driving condition, or when the battery level of the vehicle is in a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is in a high-battery range, determining to send control information for increasing the output voltage to the generator; Alternatively, when the battery level of the vehicle is within a sufficient range and the vehicle is in an accelerating driving condition and the vehicle power consumption is within a high power consumption range, or when the battery level of the vehicle is within a sufficient range and the vehicle is in a constant speed driving condition, or when the battery level of the vehicle is within a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is within a medium power consumption range or a high power consumption range, determining to send control information for a normal output voltage to the generator; Alternatively, when the battery level of the vehicle is in a sufficient range and the vehicle is in an acceleration operating condition and the vehicle power consumption is in a medium power consumption range or a low power consumption range, or when the battery level of the vehicle is in a surplus range and the vehicle is in a constant speed driving condition and the vehicle power consumption is in a high power consumption range or a medium power consumption range, determining to send control information for reducing the output voltage to the generator; Alternatively, when the battery power of the entire vehicle is in the excess range and the entire vehicle is in an accelerated driving condition, or when the battery power of the entire vehicle is in the excess range and the entire vehicle is in a uniform speed driving condition and the battery power consumption of the entire vehicle is in a low battery power consumption range, it is determined to send control information to the generator to stop outputting voltage.

2. The method for controlling the output voltage of a generator according to claim 1, characterized in that: Also perform the following steps: Response time control information is sent to the generator according to the acquired operating state of the engine to control the power generation response time of the generator.

3. The method for controlling the generator output voltage according to claim 2, characterized in that: The step of sending response time control information to the generator according to the acquired operating state of the engine to control the power generation response time of the generator specifically includes the following steps: If the rotation speed of the engine is less than the set rotation speed, response time control information is sent to the generator to extend the response time of the excitation terminal of the generator.

4. The method for controlling the output voltage of a generator according to claim 2, wherein: Also perform the following steps: If the acquired ambient temperature exceeds a set temperature threshold, the output stop control information is sent to the engine to control the generator to stop output.

5. The method for controlling the generator output voltage according to claim 1, characterized in that: Also perform the following steps: Connected to the generator regulator via LIN bus; The control information is sent to the regulator via the LIN bus, so that the regulator controls the output voltage of the generator according to the control information.

6. The method for controlling the generator output voltage according to claim 5, characterized in that: Also perform the following steps: The actual output voltage information of the generator and the speed information of the generator returned by the regulator are received, and it is determined whether the generator operates according to the control information.

7. The method for controlling the generator output voltage according to claim 1, characterized in that: The control information includes: The target output voltage of the generator.

8. A control system for generator output voltage, characterized in that: include: Controller ECU; the ECU is configured to: Establish a connection to the generator; Determine corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and send the information to the generator to control the generator to output a corresponding voltage; The step of determining corresponding control information based on the acquired vehicle power, operating conditions, and vehicle power consumption, and sending the information to the generator specifically includes the following steps: Determining whether the battery level of the vehicle is within a power-deficient range, a sufficient range, or a power-over range; Determining whether the operating condition of the vehicle is an acceleration condition, a constant speed condition, or a deceleration condition; Determining whether the vehicle's power consumption is within a high power consumption range, a medium power consumption range, and a low power consumption range; Determining corresponding control information according to different combinations of the vehicle's power level, the operating conditions, and the vehicle's power consumption, and sending the information to the generator; The step of determining corresponding control information according to different combinations of the vehicle's power level, the operating conditions, and the vehicle's power consumption, and sending the corresponding control information to the generator specifically includes the following steps: When the battery level of the vehicle is in a low-battery range, or when the battery level of the vehicle is in a medium-battery range and the vehicle is in a decelerating driving condition, or when the battery level of the vehicle is in a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is in a high-battery range, determining to send control information for increasing the output voltage to the generator; Alternatively, when the battery level of the vehicle is within a sufficient range and the vehicle is in an accelerating driving condition and the vehicle power consumption is within a high power consumption range, or when the battery level of the vehicle is within a sufficient range and the vehicle is in a constant speed driving condition, or when the battery level of the vehicle is within a surplus range and the vehicle is in a decelerating driving condition and the vehicle power consumption is within a medium power consumption range or a high power consumption range, determining to send control information for a normal output voltage to the generator; Alternatively, when the battery level of the vehicle is in a sufficient range and the vehicle is in an acceleration operating condition and the vehicle power consumption is in a medium power consumption range or a low power consumption range, or when the battery level of the vehicle is in a surplus range and the vehicle is in a constant speed driving condition and the vehicle power consumption is in a high power consumption range or a medium power consumption range, determining to send control information for reducing the output voltage to the generator; Alternatively, when the battery power of the entire vehicle is in the excess range and the entire vehicle is in an accelerated driving condition, or when the battery power of the entire vehicle is in the excess range and the entire vehicle is in a uniform speed driving condition and the battery power consumption of the entire vehicle is in a low battery power consumption range, it is determined to send control information to the generator to stop outputting voltage.

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