CN-115001327-B - High-efficiency energy-saving generator controlled by temperature in closed loop

Abstract

The invention discloses a temperature closed-loop control efficient energy-saving generator which comprises a temperature detection unit, a temperature control regulator and a voltage regulation module, wherein the temperature detection unit comprises a plurality of temperature detectors, the temperature detectors are respectively arranged at two ends of a stator assembly of the generator and are respectively connected with stator coils at two ends of the stator assembly, the temperature control regulator comprises a controller, a temperature acquisition module, a voltage acquisition module, a rotor exciting current regulation module and a voltage regulation module, the temperature acquisition module is connected with each temperature detector and is used for acquiring the temperature at two ends of the stator assembly, the voltage acquisition module is used for acquiring the voltage of a power generation output end of the generator, the rotor exciting current regulation module is used for controlling and regulating the exciting current of a rotor, and the voltage regulation module is used for regulating the voltage of the generator. The invention can realize the output voltage and current of the closed-loop self-control generator, so that the generator always meets the power consumption requirement of the whole vehicle in the optimal state, reduces the heat loss of the motor, and is energy-saving and efficient.

Inventors

• LU HONGSHENG
• YANG GUANGTAO

Assignees

• 北京奥博汽车电子电器有限公司
• 秦皇岛环星汽车电子有限责任公司

Dates

Publication Date

20260508

Application Date

20220623

Claims (6)

1. 1. The high-efficiency energy-saving generator controlled by the temperature in a closed loop manner is characterized by comprising: the temperature detection unit comprises a plurality of temperature detectors which are respectively arranged at two ends of a stator assembly of the generator and are respectively connected with stator coils at two ends of the stator assembly; The temperature control regulator comprises a controller, and a temperature acquisition module, a voltage acquisition module, a rotor exciting current regulation module and a voltage regulation module which are connected with the controller, wherein the temperature acquisition module is connected with each temperature detector and is used for acquiring the temperature at two ends of a stator assembly, the voltage acquisition module is used for acquiring the voltage of a power generation output end of a generator, the rotor exciting current regulation module is used for controlling and regulating the size of the rotor exciting current, and the voltage regulation module is used for regulating the voltage of the generator; The temperature control regulator is also provided with an alarm module, and the controller is connected with the alarm module, wherein the controller judges the working state of the generator through the temperature of the stator coil of the generator collected by the temperature collection module and the voltage of the power generation output end of the generator collected by the voltage collection module: The method comprises the steps that in the mode 1, when the temperature acquisition module acquires that the temperature of a stator coil is higher than a threshold temperature set by a controller, the controller controls a rotor exciting current adjusting module to enable rotor exciting current to be reduced, when the temperature is still higher than the threshold temperature set by the controller, the controller controls the rotor exciting current adjusting module to continuously reduce rotor exciting current, the process is repeated until the temperature acquired by the temperature acquisition module is lower than or equal to the threshold temperature set by the controller, the mode 2 is entered, and during the process, the controller controls an alarm module to send out an alarm signal with high motor temperature; Mode 2, when the temperature acquisition module acquires that the temperature of the stator coil is lower than the threshold temperature set by the controller, and the voltage of the power generation output end of the generator acquired by the voltage acquisition module is lower than the voltage range set by the controller, the controller controls the rotor exciting current adjustment module to increase the rotor exciting current so as to improve the output voltage, meanwhile, the temperature acquired by the temperature acquisition module is combined to judge, if the temperature is still lower than the threshold temperature, the voltage detection result acquired by the voltage acquisition module is combined, if the voltage of the power generation output end of the generator is still lower than the voltage range set by the controller, the control logic is repeated until the voltage of the power generation output end of the generator is in the voltage range set by the controller, the generator works in the normal voltage range, if the voltage of the power generation output end of the generator is detected to be higher than the voltage range set by the controller, the mode 3 is entered, and if the temperature acquired by the temperature acquisition module is higher than the threshold temperature set by the controller in the period; And 3, when the temperature of the stator coil acquired by the temperature acquisition module is lower than the threshold temperature set by the controller, and the voltage of the power generation output end of the generator acquired by the voltage acquisition module is higher than the voltage range set by the controller, the controller controls the rotor exciting current adjustment module to reduce the rotor exciting current so as to reduce the output voltage, meanwhile, the temperature acquired by the temperature acquisition module is combined for judgment, if the temperature is still lower than the threshold temperature, the voltage detection result acquired by the voltage acquisition module is combined, if the voltage of the power generation output end of the generator is still higher than the voltage range set by the controller, the control logic is repeated until the voltage of the power generation output end of the generator is in the voltage range set by the controller, the generator works in the normal voltage range, and when the voltage of the power generation output end of the generator is detected to be lower than the voltage range set by the controller, the controller enters the mode 2, and when the temperature acquired by the temperature acquisition module is higher than the threshold temperature set by the controller, the mode 1 is entered.
2. 2. The temperature closed loop controlled high efficiency energy saving generator of claim 1 wherein the temperature controlled regulator is externally provided with a bracket and a plurality of temperature sensor wire bonding tabs, wherein one end of the plurality of temperature sensor wire bonding tabs is connected to a temperature acquisition module within the temperature controlled regulator and the other end extends outwardly beyond the bracket and is connected to a plurality of temperature detectors, respectively.
3. 3. The temperature closed loop control high-efficiency energy-saving generator according to claim 2, wherein the temperature detector is a first temperature detector, the first temperature detector is provided with a first shell, a first heat conduction silicone grease injection hole is formed in the top of the first shell, a groove is formed in the bottom of the first shell, the first heat conduction silicone grease injection hole penetrates through the inside of the first shell to be communicated with the groove, a first temperature sensor probe is installed in the groove, one end of the first temperature sensor probe is connected with a first temperature sensor connecting wire, the other end of the first temperature sensor probe is flush with the end face of the groove, the first shell of each first temperature detector is fixed on a generator driving end cover and a brush end cover through fixing bolts, the first temperature sensor probe is in contact with a stator coil, heat conduction silicone grease is filled in the first heat conduction silicone grease injection hole and the groove, and the first temperature sensor connecting wire penetrates out of the first shell to be connected with any temperature sensor connecting wire welding sheet.
4. 4. The temperature closed-loop control efficient energy-saving generator according to claim 2, wherein the temperature detector is a second temperature detector, the temperature detector is provided with a second shell, the cross section of the second shell is fan-shaped, a second heat conduction silicone grease injection hole is formed in the top of the second shell, a stator coil clamping groove is formed in the bottom of the second shell, the second heat conduction silicone grease injection hole penetrates through the inside of the second shell to be communicated with the stator coil clamping groove, a second temperature sensor probe is installed in the stator coil clamping groove, one end of the second temperature sensor probe is connected with a second temperature sensor connecting wire, wherein the second shell of each second temperature detector is fixed on the periphery of a stator coil in a surrounding mode through a binding wire in a semi-surrounding mode, the stator coil is contained in the stator coil clamping groove in a matching mode, the second temperature sensor probe is in contact with the stator coil, the second heat conduction silicone grease injection hole and the stator coil clamping groove are filled with heat conduction silicone grease, and the second temperature sensor connecting wire penetrates out of the second shell to be connected with any temperature sensor connecting wire welding piece.
5. 5. The temperature closed-loop control efficient energy-saving generator according to claim 4, wherein binding fixing grooves are formed in two ends of the top of the second shell of the second temperature detector, the two binding fixing grooves are perpendicular to the extending direction of the stator coil clamping grooves, and the binding wires penetrate through the binding fixing grooves and are arranged around the periphery of the second shell and the periphery of the stator coil.
6. 6. The temperature closed-loop control efficient energy-saving generator according to claim 1, wherein the temperature control regulator is further provided with a communication module connected with the controller, and the communication module is connected with a whole vehicle ECU system of the electric automobile and is used for receiving an instruction sent by the whole vehicle ECU system, controlling the output voltage of the generator, regulating the threshold temperature set by the controller, and feeding back real-time working state parameters of the generator to the whole vehicle ECU system.

Description

High-efficiency energy-saving generator controlled by temperature in closed loop Technical Field The invention belongs to the technical field of energy-based electric automobiles, and relates to a temperature closed-loop control efficient energy-saving generator. Background The traditional automobile generator belongs to a voltage regulation type generator, namely when the generator works at a rotating speed and the external load does not exceed the rated output at the rotating speed, the output voltage can be stably controlled to fluctuate within a small range. When the external load is seriously overloaded, the rated output capacity of the motor under the corresponding rotating speed can not meet the external load demand, the voltage of the generator can be rapidly reduced, when the voltage is reduced to a certain limit value, the phenomenon that the motor is stopped and does not work can be possibly caused by the fact that part of the vehicle-mounted equipment with voltage protection is stopped, driving safety can be possibly caused, meanwhile, under the condition that the motor is seriously overloaded, the temperature of the motor is rapidly increased and exceeds the allowable working temperature, so that the heat loss of the generator is increased, the efficiency is reduced, and the generator is burnt by serious people. Since the output voltage of the common voltage-regulating generator fluctuates in a small range, the output current is determined by the magnitude of the external load, and the working principle is as follows: when the generator works at a certain rotating speed, the output voltage of the generator is always maintained within the voltage range set by the regulator, and the magnitude of the output current of the motor is controlled by the magnitude of exciting current supplied by the regulator to the rotor coil. When the external load current increases, the regulator controls the exciting current to increase so as to increase the magnetic field strength and the induced electromotive force, namely, the output power of the motor is increased within the rated power range of the motor at the rotating speed (the output voltage is constant and the output current is increased) in order to ensure the constant output voltage. When the external load current decreases, the regulator controls the exciting current to decrease the magnetic field strength and decrease the induced electromotive force in order to ensure the constant output voltage, i.e., decrease the motor output power (constant output voltage and decreasing output current) at the rotation speed. However, when the current required by the external load increases suddenly, the exciting current provided by the regulator reaches the maximum, namely, when the motor reaches the maximum output power and can not be lifted any more, the voltage drops sharply under the condition that the output power of the motor is unchanged in order to meet the current requirement of the external load, when the voltage drops to a certain limit value, the vehicle-mounted equipment with voltage protection is likely to be stopped and not operated, so that driving safety is caused, meanwhile, the voltage is low, the phenomenon that the storage battery can not be charged effectively and the power shortage of the storage battery is easy to occur, in addition, the heat loss generated by the stator coil increases due to the increase of the output current, the temperature of the motor increases very rapidly, and the fault phenomenon that the generator burns out after the allowable working temperature of the motor insulation piece is exceeded is caused. Disclosure of Invention It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below. The invention also aims to provide a temperature closed-loop control efficient energy-saving generator which can effectively reduce the heat loss of the motor, improve the working efficiency and improve the reliability of the motor, and is energy-saving and environment-friendly. To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a temperature closed loop control energy efficient generator comprising: the temperature detection unit comprises a plurality of temperature detectors which are respectively arranged at two ends of a stator assembly of the generator and are respectively connected with stator coils at two ends of the stator assembly; the temperature control regulator comprises a controller, and a temperature acquisition module, a voltage acquisition module, a rotor exciting current regulation module and a voltage regulation module which are connected with the controller, wherein the temperature acquisition module is connected with each temperature detector and used for acquiring the temperature at two ends of a stator assembly, the voltage acquisition module is used for acq