Temperature closed-loop control high-efficiency energy-saving generator

Abstract

The application discloses a kind of temperature closed-loop control high-efficiency energy-saving generator, comprising: temperature detection unit, it includes multiple temperature detectors, multiple temperature detectors are respectively installed at the both ends of the stator assembly of generator, and respectively with the stator coil of the both ends of stator assembly is connected;Temperature control regulator, it includes controller, and temperature acquisition module, voltage acquisition module, rotor excitation current adjustment module, voltage adjustment module connected therewith, the temperature acquisition module is connected with each temperature detector, for collecting the temperature at the both ends of stator assembly, the voltage acquisition module is used to collect the voltage of generator power generation output end, the rotor excitation current adjustment module is used to control and adjust the size of rotor excitation current, the voltage adjustment module is used to adjust the voltage of generator.The application can realize the output voltage and current of closed-loop self-control generator, so that generator is always in the best state to meet the power demand of whole vehicle, reduce the heat loss of motor, energy-efficient.

Description

Technical Field

[0001] This invention belongs to the field of new energy electric vehicle technology and relates to a high-efficiency energy-saving generator with closed-loop temperature control. Background Technology

[0002] Traditional automotive alternators are voltage-regulated alternators. This means that when the alternator operates at a certain speed, its output voltage can be stably controlled within a very small range as long as the external load does not exceed the rated output at that speed. However, when the external load is severely overloaded, and the rated output capacity at the corresponding speed cannot meet the load demand, the alternator voltage will drop sharply. When it drops to a certain limit, some onboard equipment with voltage protection may shut down, potentially jeopardizing driving safety. Simultaneously, under severe overload conditions, the motor temperature will rise rapidly, exceeding the allowable operating temperature, resulting in increased heat loss and reduced efficiency of the alternator. In severe cases, this can even cause the alternator to burn out.

[0003] Because the output voltage of a conventional voltage-regulated generator fluctuates within a small range, and the output current is determined by the magnitude of the external load, its working principle is as follows: When the generator operates at a certain speed, the generator output voltage is always maintained within the voltage range set by the regulator. The magnitude of the motor output current is controlled by the magnitude of the excitation current supplied to the rotor coil by the regulator. When the external load current increases, the regulator controls the excitation current to increase the magnetic field strength and increase the induced electromotive force in order to ensure a constant output voltage. That is, within the rated power range of the motor at that speed, the motor output power is increased (constant output voltage, increased output current). When the external load current decreases, the regulator controls the excitation current to decrease the magnetic field strength and decrease the induced electromotive force in order to ensure a constant output voltage. That is, within the rated power range of that speed, the motor output power is reduced (constant output voltage, decreased output current).

[0004] However, when the current required by the external load increases dramatically, the excitation current that the regulator can provide reaches its maximum, and the magnetic field strength of the motor rotor becomes saturated. That is, when the motor reaches its maximum output power and cannot increase it further, in order to meet the current demand of the external load, the voltage of the motor will drop sharply while its output power remains unchanged. When it drops to a certain limit, some on-board equipment with voltage protection may stop working, which may lead to driving safety issues. At the same time, the low generator voltage can easily cause the battery to fail to charge effectively, resulting in battery depletion. In addition, due to the increase in output current, the heat loss generated by the stator coil increases, and the motor temperature will rise rapidly. When it exceeds the allowable operating temperature of the motor insulation components, it will cause the generator to burn out. Summary of the Invention

[0005] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0006] Another objective of this invention is to provide a temperature closed-loop control high-efficiency energy-saving generator, which can effectively reduce the heat loss of the motor, improve working efficiency, and at the same time improve the reliability, energy saving and environmental protection of the motor.

[0007] To achieve these objectives and other advantages according to the present invention, a temperature closed-loop controlled high-efficiency energy-saving generator is provided, comprising:

[0008] The temperature detection unit includes multiple temperature detectors, which are respectively installed at both ends of the stator assembly of the generator and connected to the stator coils at both ends of the stator assembly.

[0009] A temperature control regulator includes a controller and connected to it a temperature acquisition module, a voltage acquisition module, a rotor excitation current regulation module, and a voltage regulation module. The temperature acquisition module is connected to each temperature detector and is used to acquire the temperature at both ends of the stator assembly. The voltage acquisition module is used to acquire the generator output voltage. The rotor excitation current regulation module is used to control and regulate the magnitude of the rotor excitation current. The voltage regulation module is used to regulate the generator voltage.

[0010] Preferably, the temperature control regulator is provided with a bracket and multiple temperature sensor connection wire solder pads. One end of each of the multiple temperature sensor connection wire solder pads is connected to the temperature acquisition module inside the temperature control regulator, and the other end extends outward beyond the bracket and is connected to multiple temperature detectors respectively.

[0011] Preferably, the temperature detector is a first temperature detector, which has a housing. The top of the housing has a thermal grease injection hole and the bottom has a groove. The thermal grease injection hole passes through the interior of the housing and communicates with the groove. A temperature sensor probe is installed in the groove. One end of the temperature sensor probe is connected to a temperature sensor connection wire, and the other end is flush with the end face of the groove. The housing of each first temperature detector is fixed to the generator drive end cover and the brush end cover by fixing bolts, so that the temperature sensor probe is in contact with the stator coil. The thermal grease injection hole and the groove are filled with thermal grease. The temperature sensor connection wire passes through the housing and is connected to any temperature sensor connection wire solder pad.

[0012] Preferably, the temperature detector is a second temperature detector, which is provided with a housing second. The housing second has a fan-shaped cross-section, with a thermal grease injection hole second at the top and a stator coil slot at the bottom. The thermal grease injection hole second passes through the interior of the housing second and communicates with the stator coil slot. A temperature sensor probe second is installed in the stator coil slot. One end of the temperature sensor probe second is connected to a temperature sensor connecting wire second. The housing second of each second temperature detector is partially fixed to the outer periphery of the stator coil by a binding wire, so that the stator coil is matched and accommodated in the stator coil slot, and the temperature sensor probe second is in contact with the stator coil. The thermal grease injection hole second and the stator coil slot are filled with thermal grease. The temperature sensor connecting wire second passes through the housing second and is connected to any temperature sensor connecting wire solder pad.

[0013] Preferably, the top two ends of the housing of the second temperature detector are provided with binding and fixing grooves, the two binding and fixing grooves are perpendicular to the extension direction of the stator coil slot, and the binding wire passes through the binding and fixing grooves and is arranged around the outer periphery of the housing and the stator coil.

[0014] Preferably, the temperature controller also includes an alarm module, and the controller is connected to the alarm module. The controller determines the generator's operating status by using the generator's stator coil temperature acquired by the temperature acquisition module and the generator's output voltage acquired by the voltage acquisition module.

[0015] Mode 1: When the temperature acquisition module detects that the temperature of the stator coil is higher than the threshold temperature set by the controller, the controller controls the rotor excitation current adjustment module to reduce the rotor excitation current. When the temperature is still higher than the threshold temperature set by the controller, the controller controls the rotor excitation current adjustment module to continue to reduce the rotor excitation current. The above process is repeated until the temperature detected by the temperature acquisition module is less than or equal to the threshold temperature set by the controller. Then, Mode 2 is entered. During this period, the controller controls the alarm module to issue an alarm signal for high motor temperature.

[0016] Mode 2: When the temperature acquisition module detects that the stator coil temperature is lower than the threshold temperature set by the controller, and the voltage acquisition module detects that the generator output voltage is lower than the voltage range set by the controller, the controller controls the rotor excitation current adjustment module to increase the rotor excitation current to improve the output voltage. At the same time, the controller combines the temperature detected by the temperature acquisition module with the voltage detection result. If the temperature is still lower than the threshold temperature, the controller combines the voltage detection result detected by the voltage acquisition module. If the generator output voltage is still lower than the voltage range set by the controller, the controller repeats the above control logic until the generator output voltage is within the voltage range set by the controller and the generator is operating within the normal voltage range. If the generator output voltage is detected to be higher than the voltage range set by the controller, the controller enters Mode 3. During this period, if the temperature detected by the temperature acquisition module is higher than the threshold temperature set by the controller, the controller enters Mode 1.

[0017] Mode 3: When the temperature acquisition module detects that the stator coil temperature is lower than the threshold temperature set by the controller, and the voltage acquisition module detects that the generator output voltage is higher than the voltage range set by the controller, the controller controls the rotor excitation current adjustment module to reduce the rotor excitation current, thereby reducing the output voltage. Simultaneously, the controller combines the temperature data from the temperature acquisition module with the voltage detection results. If the temperature is still lower than the threshold temperature, the controller combines the voltage detection results from the voltage acquisition module. If the generator output voltage is still higher than the voltage range set by the controller, the above control logic is repeated until the generator output voltage is within the voltage range set by the controller, and the generator operates within the normal voltage range. If the generator output voltage is detected to be lower than the voltage range set by the controller, Mode 2 is entered. During this period, if the temperature data from the temperature acquisition module is higher than the threshold temperature set by the controller, Mode 1 is entered.

[0018] Preferably, the temperature control regulator is further provided with a communication module connected to the controller, and the communication module is connected to the vehicle ECU system of the electric vehicle to receive instructions from the vehicle ECU system, control the output voltage of the generator, adjust the threshold temperature set by the controller, and feed back the real-time operating status parameters of the generator to the vehicle ECU system.

[0019] The present invention has at least the following beneficial effects: The present invention is equipped with a temperature detection unit and a temperature control regulator, which expands the traditional automobile generator from a single voltage regulation function to a generator with closed-loop intelligent control function of voltage and temperature, so as to reduce the heat loss of the motor and improve the efficiency, reliability and service life of the generator.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0021] Figure 1 This is a control logic block diagram of the temperature control regulator in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a voltage-regulated automotive generator in the prior art;

[0023] Figure 3 This is a schematic diagram of the structure of a temperature closed-loop control high-efficiency energy-saving generator in one embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the first temperature detector in one embodiment of the present invention;

[0025] Figure 5 This is a top view of the first temperature detector in one embodiment of the present invention;

[0026] Figure 6 This is a bottom view of the first temperature detector in one embodiment of the present invention;

[0027] Figure 7 This is a left view of the first temperature detector in one embodiment of the present invention;

[0028] Figure 8 This is a three-dimensional structural diagram of the second temperature detector in one embodiment of the present invention;

[0029] Figure 9 This is a three-dimensional structural diagram of the second temperature detector in one embodiment of the present invention;

[0030] Figure 10 This is a cross-sectional view of the second temperature detector in one embodiment of the present invention;

[0031] Figure 11 This is a top view of the second temperature detector in one embodiment of the present invention;

[0032] Figure 12 This is a bottom view of the second temperature detector in one embodiment of the present invention;

[0033] Figure 13 This is a right view of the second temperature detector in one embodiment of the present invention;

[0034] Figure 14 This is a schematic diagram of the installation structure of the second temperature detector in one embodiment of the present invention;

[0035] Figure 15 This is a schematic diagram of the installation structure of the second temperature detector in one embodiment of the present invention;

[0036] Figure 16This is a schematic diagram of the installation structure of the second temperature detector in one embodiment of the present invention;

[0037] Figure 17 This is a schematic diagram of the assembly structure of the first temperature detector and the generator in one embodiment of the present invention;

[0038] Figure 18 This is a schematic diagram of the assembly structure of the second temperature detector and the generator in one embodiment of the present invention;

[0039] Figure 19 This is a schematic diagram of the structure of a generator in which the first temperature detector and the second temperature detector are combined and assembled in one embodiment of the present invention;

[0040] Figure 20 This is a front view of the temperature control regulator in one embodiment of the present invention.

[0041] Figure 21 This is a left view of the temperature control regulator in one embodiment of the present invention. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can implement it based on the description.

[0043] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0044] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials mentioned are commercially available. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0045] like Figures 1-21 As shown, the present invention provides a temperature closed-loop control high-efficiency energy-saving generator, comprising:

[0046] The temperature detection unit includes multiple temperature detectors, which are respectively installed at both ends of the stator assembly 300 of the generator and connected to the stator coils 301 at both ends of the stator assembly 300.

[0047] The temperature control regulator 400 includes a controller and connected to it a temperature acquisition module, a voltage acquisition module, a rotor excitation current regulation module, and a voltage regulation module. The temperature acquisition module is connected to each temperature detector and is used to acquire the temperature at both ends of the stator assembly 300. The voltage acquisition module is used to acquire the generator output voltage. The rotor excitation current regulation module is used to control and regulate the magnitude of the rotor excitation current. The voltage regulation module is used to regulate the generator voltage.

[0048] The temperature-controlled high-efficiency energy-saving generator described in this technical solution is equipped with a temperature detection unit and a temperature control regulator 400. The temperature detection unit includes multiple temperature detectors installed at both ends of the generator stator assembly, each connected to a stator coil at both ends of the stator assembly. The temperature controller includes a controller, a temperature acquisition module connected to the multiple temperature detectors, a voltage acquisition module connected to the generator's output terminal (B+ terminal), a rotor excitation current regulation module, and a voltage regulation module. All of these modules are connected to the controller. When the generator is operating, the temperature of the generator stator coil detected by the temperature detection unit and acquired by the temperature acquisition module within the temperature control regulator 400, combined with the voltage at the generator's output terminal (B+ terminal) acquired by the voltage acquisition module, determines the generator's operating status. A traditional voltage-regulated automotive alternator includes a pulley 302, a drive end cover 303, a front bearing 304, a bearing pressure plate 305, a stator assembly 300, a rotor assembly 306, a rear bearing 307, a brush end cover 308, a rectifier bridge 309, a voltage regulator 310, and a protective end cover 311. The pulley is connected to the drive end cover via a flat washer 312, a spring washer 313, and a pulley locking nut 314. This technical solution installs multiple temperature detectors at both ends of the stator assembly to monitor the stator coil temperature in real time. The temperature is then analyzed and judged by a temperature control regulator 400. The temperature control regulator 400 has the function of a voltage regulator and incorporates closed-loop temperature control logic and other related protection functions. This can promptly reduce the heat loss of the motor, improve the efficiency, reliability, and service life of the alternator. Furthermore, the temperature control regulator 400 can communicate with the vehicle's ECU. When the stator coil temperature is too high, the ECU logic can control and shut down unnecessary loads during vehicle operation to reduce the output current and lower the temperature.

[0049] In another technical solution, such as Figures 1-21As shown, the temperature control regulator 400 is externally provided with a bracket 401 and multiple temperature sensor connection wire solder pads 402. One end of each temperature sensor connection wire solder pad 402 is connected to the temperature acquisition module inside the temperature control regulator 400, and the other end extends outward beyond the bracket 401 and is connected to multiple temperature detectors respectively. In this technical solution, the temperature sensor connection wire solder pads 402 are connected to multiple temperature detectors to facilitate the transmission of temperature information detected by the temperature detectors to the temperature acquisition module. The temperature sensor connection wire solder pads 402 protrude above the surface of the bracket 401 for easy soldering.

[0050] In another technical solution, such as Figures 1-21As shown, the temperature detector is a first temperature detector 100, which is provided with a housing 101. The top of the housing 101 has a thermal grease injection hole 102, and the bottom has a groove 103. The thermal grease injection hole 102 passes through the interior of the housing 101 and communicates with the groove 103. A temperature sensor probe 104 is installed in the groove 103. One end of the temperature sensor probe 104 is connected to a temperature sensor connecting wire 105, and the other end is flush with the end face of the groove 103. The housing 101 of each first temperature detector 100 is fixed to the generator drive end cover and the brush end cover by fixing bolts 106, so that the temperature sensor probe 104 is in contact with the stator coil. The thermal grease injection hole 102 and the groove 103 are filled with thermal grease. The temperature sensor connecting wire 105 passes through the housing 101 and is connected to any temperature sensor connecting wire solder pad. In this technical solution, the temperature detector can be configured as a first temperature detector 100. Multiple first temperature detectors 100 are installed on the top outer side of the stator coil and fixed to the generator drive end cover and brush end cover. The first detector is configured with a housing 101. The cross-section of the housing 101 is a horizontally placed stepped structure to match the end structure of the stator assembly. The large end face of the housing 101 has a thermal grease injection hole 102, and the small end face has a rectangular groove 103. A temperature sensor probe 104 is installed in the groove 103, and the thermal grease injection hole 102 and the groove 103 are aligned. 3. The thinnest part of the cross-section of the housing 101 is provided with a through threaded hole 107. The housing 101 is fastened to the end of the stator assembly, so that the temperature sensor probe 104 contacts the stator coil. A fixing bolt 106 is screwed into the threaded hole 107. A rubber adjusting pad is installed between the bottom of the threaded hole 107 and the stator assembly. The first temperature detector 100 is fixed to the end of the stator assembly. Thermal grease is injected into the thermal grease injection hole 102, so that the thermal grease fills the thermal grease injection hole 102 and the groove 103. While fixing, it facilitates heat conduction and improves the accuracy of temperature detection. The assembly process of the first temperature detector 100 with the engine is as follows: After the motor assembly is completed, the probe end of the first temperature detector 100 is inserted into the end cover through the ventilation slot or the specially opened temperature detector mounting slot on the side wall of the end cover, so that the temperature sensor probe 104 is in close contact with the stator coil; the first temperature detector is connected and fixed to the threaded hole on the end cover with fixing bolts, and thermal grease is injected through the thermal grease injection hole 102; the temperature sensor connection line 105 is welded to the temperature sensor connection line solder pad 402 on the temperature control regulator 400 to form a temperature detection circuit.

[0051] In another technical solution, such as Figures 1-21As shown, the temperature detector is a second temperature detector 200, which is provided with a housing 201. The housing 201 has a fan-shaped cross-section, with a thermal grease injection hole 202 at the top and a stator coil slot 203 at the bottom. The thermal grease injection hole 202 passes through the interior of the housing 201 and communicates with the stator coil slot 203. A temperature sensor probe 204 is installed in the stator coil slot 203, and one end of the temperature sensor probe 204 is connected to a temperature sensor. The second temperature sensor connection wire 205 is provided. The housing 201 of each second temperature detector 200 is partially fixed to the outer periphery of the stator coil 301 by a binding wire 206, so that the stator coil is matched and accommodated in the stator coil slot 203, and the temperature sensor probe 204 is in contact with the stator coil. The thermal grease injection hole 202 and the stator coil slot 203 are filled with thermal grease. The second temperature sensor connection wire 205 passes through the housing 201 and is connected to the solder pad of any temperature sensor connection wire. In this technical solution, multiple second temperature detectors 200 are installed on both sides of the outer periphery of the stator coil. A fan-shaped housing 201 is provided, with one fan-shaped end face having a thermal grease injection hole 202, and the other fan-shaped end face having a stator coil slot 203 with a fan-shaped cross-section and a semi-circular longitudinal section. A temperature sensor probe 204 is installed inside the stator coil slot 203. The thermal grease injection hole 202 communicates with the stator coil slot 203. The multiple second temperature detectors 200 are fastened to the outer periphery of the stator coil, allowing the stator coil to fit into the stator coil slot 203. The temperature sensor probe 204 contacts the stator coil, and thermal grease is injected through the thermal grease injection hole 202, filling the gap between the thermal grease injection hole 202 and the stator coil slot 203, thus fixing the coil and facilitating heat conduction, thereby improving the accuracy of temperature detection. The assembly process of the second temperature detector 200 with the engine is as follows: the second temperature detector 200 is bound and fixed to the stator coil, and thermal grease is injected through the thermal grease injection hole 202; the stator assembly with the second temperature detector is assembled with other generator components to form a generator assembly. During the assembly process, the temperature sensor connection wire 205 needs to pass through the ventilation slot opened on the side wall of the end cover or the specially opened temperature detector lead wire slot, and finally be welded to the temperature sensor connection wire solder pad 402 on the temperature control regulator 400 to form a temperature detection circuit.

[0052] like Figure 19 As shown, the multiple temperature detectors may include multiple first temperature detectors 100 and multiple second temperature detectors 200. The two types of temperature detectors can be mixed and assembled with the generator, and the assembly process is the same as described above.

[0053] In another technical solution, such as Figures 1-21As shown, the second temperature detector 200 has binding and fixing grooves 207 at both ends of the top of the housing 201. The two binding and fixing grooves 207 are perpendicular to the extending direction of the stator coil slot 203. The binding wire 206 passes through the binding and fixing grooves 207 and is arranged around the outer periphery of the housing 201 and the stator coil. In this technical solution, two more binding and fixing grooves 207 are also provided on the fan-shaped end face of the housing 201. The binding and fixing grooves 207 and the stator coil slot 203 are located on the two fan-shaped end faces respectively, and the binding and fixing grooves 207 and the stator coil slot 203 are perpendicular to each other. The binding wire 206 is arranged in the binding and fixing grooves 207, which limits the position and facilitates the fixing of the second temperature detector 200.

[0054] In another technical solution, the temperature control regulator 400 is further equipped with an alarm module, and the controller is connected to the alarm module. The controller determines the generator's operating status by using the generator's stator coil temperature acquired by the temperature acquisition module and the generator's output voltage acquired by the voltage acquisition module.

[0055] Mode 1: When the temperature acquisition module detects that the temperature of the stator coil is higher than the threshold temperature set by the controller, the controller controls the rotor excitation current adjustment module to reduce the rotor excitation current. When the temperature is still higher than the threshold temperature set by the controller, the controller controls the rotor excitation current adjustment module to continue to reduce the rotor excitation current. The above process is repeated until the temperature detected by the temperature acquisition module is less than or equal to the threshold temperature set by the controller. Then, Mode 2 is entered. During this period, the controller controls the alarm module to issue an alarm signal for high motor temperature. The alarm signal can be fed back to the vehicle ECU, which will then control and shut down unnecessary loads during vehicle operation to reduce the temperature by reducing the output current.

[0056] Mode 2: When the temperature acquisition module detects that the stator coil temperature is lower than the threshold temperature set by the controller, and the voltage acquisition module detects that the generator output terminal (B+ terminal) voltage is lower than the voltage range set by the controller, the controller controls the rotor excitation current adjustment module to increase the rotor excitation current to improve the output voltage. At the same time, it combines the temperature acquired by the temperature acquisition module for judgment. If the temperature is still lower than the threshold temperature, it combines the voltage detection result acquired by the voltage acquisition module. If the generator output terminal voltage is still lower than the voltage range set by the controller, the above control logic is repeated until the generator output terminal (B+ terminal) voltage is within the voltage range set by the controller, and the generator is operating within the normal voltage range. If the generator output terminal voltage is detected to be higher than the voltage range set by the controller, it enters Mode 3. During this period, if the temperature acquired by the temperature acquisition module is higher than the threshold temperature set by the controller, it enters Mode 1.

[0057] Mode 3: When the temperature acquisition module detects that the stator coil temperature is lower than the threshold temperature set by the controller, and the voltage acquisition module detects that the generator output terminal (B+ terminal) voltage is higher than the voltage range set by the controller, the controller controls the rotor excitation current adjustment module to reduce the rotor excitation current, thereby reducing the output voltage. Simultaneously, the controller combines the temperature detected by the temperature acquisition module with the voltage detection result. If the temperature is still lower than the threshold temperature, the controller combines the voltage detection result detected by the voltage acquisition module. If the generator output terminal voltage is still higher than the voltage range set by the controller, the above control logic is repeated until the generator output terminal (B+ terminal) voltage is within the voltage range set by the controller, and the generator operates within the normal voltage range. If the generator output terminal voltage is detected to be lower than the voltage range set by the controller, Mode 2 is entered. During this period, if the temperature detected by the temperature acquisition module is higher than the threshold temperature set by the controller, Mode 1 is entered.

[0058] In another technical solution, the temperature control regulator is further equipped with a communication module connected to the controller, and this communication module is connected to the vehicle ECU system of the electric vehicle. This module receives commands from the vehicle ECU system, controls the generator's output voltage, adjusts the threshold temperature set by the controller, and feeds back the generator's real-time operating status parameters to the vehicle ECU system. This temperature control regulator also has the function of communicating with the vehicle, receiving ECU commands to control the generator's output voltage, adjust the threshold temperature set by the controller, etc.; simultaneously, it can feed back the generator's real-time operating status parameters to the vehicle ECU, so that the generator can make adjustments as needed to ensure it operates within the lowest energy consumption range, thereby achieving high efficiency and energy saving.

[0059] The number of modules and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0060] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A high-efficiency, energy-saving generator with closed-loop temperature control, characterized in that, include: The temperature detection unit includes multiple temperature detectors, which are respectively installed at both ends of the stator assembly of the generator and connected to the stator coils at both ends of the stator assembly. A temperature control regulator includes a controller and connected to it a temperature acquisition module, a voltage acquisition module, a rotor excitation current regulation module, and a voltage regulation module. The temperature acquisition module is connected to each temperature detector and is used to acquire the temperature at both ends of the stator assembly. The voltage acquisition module is used to acquire the generator output voltage. The rotor excitation current regulation module is used to control and regulate the magnitude of the rotor excitation current. The voltage regulation module is used to regulate the generator voltage. The temperature controller also includes an alarm module, and the controller is connected to the alarm module. The controller determines the generator's operating status by using the generator's stator coil temperature acquired by the temperature acquisition module and the generator's output voltage acquired by the voltage acquisition module. Mode 1: When the temperature acquisition module detects that the temperature of the stator coil is higher than the threshold temperature set by the controller, the controller controls the rotor excitation current adjustment module to reduce the rotor excitation current. When the temperature is still higher than the threshold temperature set by the controller, the controller controls the rotor excitation current adjustment module to continue to reduce the rotor excitation current. The above process is repeated until the temperature detected by the temperature acquisition module is less than or equal to the threshold temperature set by the controller. Then, Mode 2 is entered. During this period, the controller controls the alarm module to issue an alarm signal for high motor temperature. Mode 2: When the temperature acquisition module detects that the stator coil temperature is lower than the threshold temperature set by the controller, and the voltage acquisition module detects that the generator output voltage is lower than the voltage range set by the controller, the controller controls the rotor excitation current adjustment module to increase the rotor excitation current to improve the output voltage. At the same time, the controller combines the temperature detected by the temperature acquisition module with the voltage detection result. If the temperature is still lower than the threshold temperature, the controller combines the voltage detection result detected by the voltage acquisition module. If the generator output voltage is still lower than the voltage range set by the controller, the controller repeats the above control logic until the generator output voltage is within the voltage range set by the controller and the generator is operating within the normal voltage range. If the generator output voltage is detected to be higher than the voltage range set by the controller, the controller enters Mode 3. During this period, if the temperature detected by the temperature acquisition module is higher than the threshold temperature set by the controller, the controller enters Mode 1. Mode 3: When the temperature acquisition module detects that the stator coil temperature is lower than the threshold temperature set by the controller, and the voltage acquisition module detects that the generator output voltage is higher than the voltage range set by the controller, the controller controls the rotor excitation current adjustment module to reduce the rotor excitation current, thereby reducing the output voltage. Simultaneously, the controller combines the temperature data from the temperature acquisition module with the voltage detection results. If the temperature is still lower than the threshold temperature, the controller combines the voltage detection results from the voltage acquisition module. If the generator output voltage is still higher than the voltage range set by the controller, the above control logic is repeated until the generator output voltage is within the voltage range set by the controller, and the generator operates within the normal voltage range. If the generator output voltage is detected to be lower than the voltage range set by the controller, Mode 2 is entered. During this period, if the temperature data from the temperature acquisition module is higher than the threshold temperature set by the controller, Mode 1 is entered.

2. The temperature closed-loop control high-efficiency energy-saving generator as described in claim 1, characterized in that, The temperature controller is externally provided with a bracket and multiple temperature sensor connection wire solder pads. One end of each of the multiple temperature sensor connection wire solder pads is connected to the temperature acquisition module inside the temperature controller, and the other end extends outward beyond the bracket and is connected to multiple temperature detectors respectively.

3. The temperature closed-loop control high-efficiency energy-saving generator as described in claim 2, characterized in that, The temperature detector is a first temperature detector, which is provided with a housing. The top of the housing has a thermal grease injection hole and the bottom has a groove. The thermal grease injection hole passes through the interior of the housing and communicates with the groove. A temperature sensor probe is installed in the groove. One end of the temperature sensor probe is connected to a temperature sensor connection wire, and the other end is flush with the end face of the groove. The housing of each first temperature detector is fixed to the generator drive end cover and the brush end cover by fixing bolts, so that the temperature sensor probe is in contact with the stator coil. The thermal grease injection hole and the groove are filled with thermal grease. The temperature sensor connection wire passes through the housing and is connected to any temperature sensor connection wire solder pad.

4. The temperature closed-loop control high-efficiency energy-saving generator as described in claim 2, characterized in that, The temperature detector is a second temperature detector, which is provided with a housing second. The housing second has a fan-shaped cross-section, with a thermal grease injection hole second at the top and a stator coil slot at the bottom. The thermal grease injection hole second passes through the interior of the housing second and communicates with the stator coil slot. A temperature sensor probe second is installed in the stator coil slot. One end of the temperature sensor probe second is connected to a temperature sensor connecting wire second. The housing second of each second temperature detector is partially fixed to the outer periphery of the stator coil by a binding wire, so that the stator coil is matched and accommodated in the stator coil slot, and the temperature sensor probe second is in contact with the stator coil. The thermal grease injection hole second and the stator coil slot are filled with thermal grease. The temperature sensor connecting wire second passes through the housing second and is connected to any temperature sensor connecting wire solder pad.

5. The temperature closed-loop control high-efficiency energy-saving generator as described in claim 4, characterized in that, The second temperature detector housing has binding and fixing grooves at both ends of its top. The two binding and fixing grooves are perpendicular to the extension direction of the stator coil slot. The binding wire passes through the binding and fixing grooves and is arranged around the outer periphery of the housing and the stator coil.

6. The temperature closed-loop control high-efficiency energy-saving generator as described in claim 1, characterized in that, The temperature control regulator is also equipped with a communication module connected to the controller, and the communication module is connected to the vehicle ECU system of the electric vehicle. It is used to receive instructions from the vehicle ECU system, control the output voltage of the generator, adjust the threshold temperature set by the controller, and feed back the real-time operating status parameters of the generator to the vehicle ECU system.

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