CN113833557A - Wireless power supply and signal transmission electric control silicone oil fan control system and method - Google Patents
Wireless power supply and signal transmission electric control silicone oil fan control system and method Download PDFInfo
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- CN113833557A CN113833557A CN202111217736.0A CN202111217736A CN113833557A CN 113833557 A CN113833557 A CN 113833557A CN 202111217736 A CN202111217736 A CN 202111217736A CN 113833557 A CN113833557 A CN 113833557A
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- fan
- rotating speed
- signal transmission
- power supply
- silicone oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/042—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using fluid couplings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Abstract
The invention provides a wireless power supply and signal transmission electric control silicone oil fan control system and method, wherein a wireless power supply device is additionally arranged on a driving shaft of an electric control silicone oil fan to supply power to a rotating speed sensor and a clutch controller on an electric control silicone oil fan clutch assembly; the wireless signal transmission equipment is additionally arranged on the silicone oil fan clutch controller to realize the receiving and sending of the rotating speed signal and the clutch control signal; the control signal and the rotating speed signal are received and sent by adding the wireless signal transmission equipment at the ECU end of the engine, so that the faults of wire harness abrasion, connector assembly water inlet and the like are avoided; meanwhile, the energy recycling of the accessory work of the fan shaft can be realized, and the power supply load of the whole vehicle is reduced; wireless control is realized through clutch signals, the clutch is prevented from being out of control due to short-circuit faults of pins, and the system is more reliable and stable; the assembly is reduced, the wire harness, the bracket and other accessories are eliminated, and the part cost is saved.
Description
Technical Field
The invention belongs to the field of engine fan control, and particularly relates to an electric control silicone oil fan control system and method with wireless power supply and signal transmission.
Background
The mechanical fan shaft is directly connected with an engine gear train, keeps the same rotating speed as the engine crankshaft after multiplying the speed ratio, does not need the participation of a control system, and is controlled in an open loop manner; the silicone oil fan clutch is one of the key heat dissipation devices of the common engine fan. The electric control silicon oil fan clutch is similar to the silicon oil fan clutch in structure, except that an electromagnetic valve with an electromagnetic coil replaces a thermosensitive bimetal temperature sensing valve of the silicon oil fan clutch, and the rotating speed of a fan is automatically adjusted according to external conditions (water temperature, air inlet temperature, air conditioner and the like) of the engine, so that the engine works at the optimal temperature. When the electromagnetic coil is electrified by pulse: according to different pulse duty ratios, the valve has a suitable opening degree, and the fan has a suitable rotating speed to operate.
The electromagnetic fan clutch assembly comprises a controller, a relay and an attraction disc, the rotation speed of the fan is adjusted in two steps and three speeds according to the working temperature of an engine, the temperature control switch automatically controls the attraction and the separation of the electromagnetic constant temperature fan, when the engine works, the fan idles under the inertia effect of a bearing, when the water temperature rises to a calibration temperature, the temperature control switch closes and conducts a circuit, the constant temperature generates magnetic force to drive the fan to work, the water temperature is quickly reduced, when the gear water temperature is reduced to the calibration temperature, the temperature control switch is disconnected, and the fan starts to idle again; the electric control silicone oil fan clutch assembly controls the separation and combination of the clutch through a silicone oil electromagnetic valve so as to realize closed-loop control stepless speed regulation. The mechanical direct connection does not need wiring control, but the control of two transmission modes of the electromagnetic fan and the electric control silicone oil fan is realized by connecting a wiring harness with an ECU wiring harness, and power supply and control signal transmission are realized through the wiring harness.
At present, an electric control silicone oil fan clutch assembly is connected with an engine through 5 pins, namely 1 and a fan clutch signal; 2. the fan clutch is grounded; 3. a rotational speed sensor power supply; 4. The rotating speed sensor is grounded; 5. a fan speed feedback signal; the power supply of the rotating speed sensor and the transmission of PWM control signals of the ECU to the clutch are realized through 5 pins. The transmission in this way can realize the closed-loop control of the rotating speed of the fan, but the fixation of the fan wire harness is always difficult, and the condition of the fan wire harness fracture or abrasion often occurs in after-sales failures, so that the rotating speed of the rotating speed sensor cannot be fed back, and the rotating speed of the clutch and the fan cannot be controlled, so that the power supply wire harness, the sensor wire harness and the control wire harness easily cause the failures such as abnormal abrasion in the use process of the electric control silicone oil fan clutch, and the difficulty of installation work and the increase of hardware cost are also caused.
Therefore, it is desirable to provide an electric control silicone oil fan control system and method for wireless power supply and signal transmission to reduce the short-circuit fault of the plug connector and the fault of the broken and worn wiring harness.
Disclosure of Invention
Technical problem to be solved
The invention provides a wireless power supply and signal transmission electric control silicone oil fan control system and method, the control system cancels the wiring harness fixation and the plug connector opposite insertion, and avoids the faults of wiring harness abrasion, plug connector water inlet and the like; meanwhile, the energy recycling of the accessory work of the fan shaft can be realized, and the power supply load of the whole vehicle is reduced; wireless control is realized through clutch signals, the clutch is prevented from being out of control due to short-circuit faults of pins, and the system is more reliable and stable; and the assembly work is reduced, and the manufacturing cost is saved.
(II) technical scheme
The invention discloses an electric control silicone oil fan control system with wireless power supply and signal transmission, which comprises an engine ECU and an electric control silicone oil clutch fan assembly, wherein the engine ECU comprises a closed-loop controller and a first wireless signal transmission module; the wireless power supply module is integrated on a fan shaft of the electric control silicone oil fan, power generation is realized in an electromagnetic induction mode when the main shaft of the engine is started to rotate, and the wireless power supply module supplies power to the rotating speed sensor, the clutch controller and the wireless signal transmission module II; and the second wireless signal transmission module is in signal connection with the rotating speed sensor and the clutch controller respectively.
Further, the closed-loop controller is a PID controller, the engine ECU can receive parameter information of an engine and a finished automobile sensor, determine a set target rotating speed in a finished automobile fan calibration database according to the parameter information, and output the target rotating speed to the PID controller as a given input parameter.
Further, the parameter information of the engine and the whole vehicle sensor comprises engine air inlet temperature, engine water temperature and air conditioner pressure.
Further, the signal type of the clutch control signal is specifically a PWM control signal, the first wireless signal transmission module and the second wireless signal transmission module are NRF wireless radio frequency chips, and the rotation speed sensor is a hall sensor.
Furthermore, the wireless power supply module comprises an induction coil unit, a magnetic supply unit, a rectification unit and an electric energy storage unit, wherein the induction coil unit and the magnetic supply unit move relatively to cut a magnetic induction line or change magnetic flux to induce power generation, the induction coil unit, the rectification unit and the electric energy storage unit are electrically connected in sequence, and the rectification unit can convert induction current from alternating current to direct current.
Furthermore, an induction coil unit and a magnetic supply unit in the wireless power supply module are both mounted at a fan shaft, the fan shaft is mounted on the engine wheel system, the magnetic supply unit is fixedly mounted in an induction range of the induction coil, the magnetic supply unit is used for providing a magnetic field with a magnetic field direction parallel to the fan shaft, the center of the magnetic field is arranged in a bias mode relative to the center of the fan shaft, the induction coil unit is arranged at the outer edge of the fan shaft, and a normal vector of the induction coil unit is parallel to the magnetic field direction.
Further, the relative distance between the magnetic supply unit and the induction coil unit along the direction of the magnetic field or the direction of the fan shaft is within 30 cm.
Further, the electric energy storage unit is a capacitor or a rechargeable battery.
Further, the magnetic supply unit is an electromagnet or a permanent magnet.
The invention also discloses a control method of the wireless power supply and signal transmission electric control silicone oil fan control system, which comprises the following steps:
step 1: acquiring parameter information of an engine and a finished automobile sensor through the engine ECU;
step 2: the wireless power supply module integrated on the fan shaft supplies power to the rotating speed sensor, and the wireless signal transmission module II feeds back the actual rotating speed of the fan to the closed-loop controller;
and step 3: and the engine ECU determines the target rotating speed of the fan according to the acquired parameter information, and wirelessly transmits the target rotating speed to the clutch controller.
And 4, step 4: the clutch controller regulates and controls the rotating speed according to the target rotating speed, the rotating speed sensor wirelessly transmits the actual rotating speed in real time and feeds the actual rotating speed back to the closed-loop controller, and the closed-loop controller performs closed-loop regulation and control correction according to the fed actual rotating speed and the given target rotating speed until the control precision is reached.
(III) advantageous effects
The wireless power supply device is additionally arranged on the driving shaft of the electric control silicone oil fan to supply power to the rotating speed sensor and the clutch controller on the clutch assembly of the electric control silicone oil fan; the wireless signal transmission equipment is additionally arranged on the silicone oil fan clutch controller to realize the receiving and sending of the rotating speed signal and the clutch control signal; the control signal and the rotating speed signal are received and sent by adding the wireless signal transmission equipment at the ECU end of the engine, so that the faults of wire harness abrasion, connector assembly water inlet and the like are avoided; meanwhile, the energy recycling of the accessory work of the fan shaft can be realized, and the power supply load of the whole vehicle is reduced; wireless control is realized through clutch signals, the clutch is prevented from being out of control due to short-circuit faults of pins, and the system is more reliable and stable; the assembly is reduced, the wire harness, the bracket and other accessories are eliminated, and the part cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts:
fig. 1 is a system block diagram of an electric control silicone oil fan control system with wireless power supply and signal transmission.
FIG. 2 is a block diagram of a wireless power supply module in the electric control silicone oil fan control system according to the invention;
FIG. 3 is a schematic diagram of a wireless power supply module in the electric control silicone oil fan control system according to the invention;
FIG. 4 is a block diagram of a closed-loop system for controlling the fan speed of the silicone oil fan;
fig. 5 is a flowchart of a control method of the electronic control silicone oil fan control system with wireless power supply and signal transmission according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Because when the electric control silicone oil clutch fan assembly is connected with the engine through the wiring harness to realize power supply and control signal transmission, the condition of fan wiring harness fracture or abrasion is easy to occur in the narrow space of the electric control silicone oil clutch, so that the power supply failure of the rotating speed sensor is caused, and the rotating speed of the clutch and the rotating speed of the fan can not be controlled. The invention designs an electric control silicone oil fan control system with wireless power supply and signal transmission.
As shown in fig. 1, the wireless power supply and signal transmission electric control silicone oil fan control system of the present invention includes: the engine ECU comprises a closed-loop controller and a first wireless signal transmission module, the first electronic control silicone oil clutch fan assembly comprises a wireless power supply module, a rotating speed sensor, a clutch controller and a second wireless signal transmission module, the closed-loop controller is in signal connection with the first wireless signal transmission module, the first wireless signal transmission module and the second wireless signal transmission module can be in wireless communication, and the first wireless signal transmission module is used for sending a clutch control signal output by the closed-loop controller and receiving the actual rotating speed of a fan; the wireless power supply module is integrated on a fan shaft of the electric control silicone oil fan, power generation is realized in an electromagnetic induction mode when the main shaft of the engine is started to rotate, and the wireless power supply module supplies power to the rotating speed sensor, the clutch controller and the wireless signal transmission module II; the second wireless signal transmission module is in signal connection with the rotating speed sensor and the clutch controller respectively; therefore, the clutch control signal output by the closed-loop controller is received to the clutch controller, and the actual rotating speed of the fan output by the rotating speed sensor is fed back to the closed-loop controller through the first wireless signal transmission module.
Further, a closed-loop controller in the ECU unit may be a PID controller, and the engine ECU may receive parameter information of the engine and the entire vehicle sensor, determine a set target rotation speed in an entire vehicle fan calibration database according to the parameter information, and output the target rotation speed to the PID controller as a given input parameter. Of course, the target speed given in the closed-loop controller may be calculated in any prior art manner of determination. In addition, the signal type of the clutch control signal output by the first wireless signal transmission module is specifically a PWM control signal, so as to accurately control the opening of the silicone oil electromagnetic valve. The first wireless signal transmission module and the second wireless signal transmission module are NRF wireless radio frequency chips, and the rotating speed sensor is a Hall sensor.
As shown in figures 1 and 4, when the whole vehicle runs, data are respectively monitored in real time through an engine, an air inlet temperature sensor, a water temperature sensor on a thermostat, an air conditioner pressure sensor and the like arranged on the whole vehicle, the data are transmitted to an engine ECU through a hard wire or CAN bus, the ECU controller calculates and transfers the target rotating speed of a fan needing heat dissipation of the engine according to a whole vehicle calibration database, a PWM signal for controlling a fan clutch valve plate of the fan is obtained according to the expected target rotating speed, the PWM signal is sent to an electric control silicon oil fan wireless signal transmission module through an NRF wireless radio frequency technology after being subjected to analog-to-digital (A/D) conversion, the signal is received by the wireless signal transmission module and is transmitted to the clutch controller after being subjected to the analog-to-digital (D/A) conversion, and the opening degree of a silicon oil electromagnetic valve is controlled, the controlled clutch valve plate is closed and opened according to the PWM waveform, the control frequency of different manufacturers is different, the control frequency is different, namely 1HZ, 3HZ, 5HZ, 10HZ and the like, the higher the frequency is, the more accurate the control is, and the requirement on the valve plate is higher.
When the clutch controller controls the engagement degree of the clutch according to the received PWM signal, the clutch can be engaged according to the filling amount of the silicone oil, at the moment, the idle rotation of the fan is changed into driving the clutch shell to rotate, the rotating speeds of the fan and the driving shaft can be kept basically consistent, a certain slip ratio of a fan shaft serving as a main shaft and the fan is allowed to be basically maintained within 7%, and the actual rotating speed of the fan is guaranteed to gradually reach the target rotating speed through stepless speed regulation of the clutch. The power supply of the rotating speed sensor is carried out by a wireless power supply module which is arranged on a fan main shaft and provided with an electromagnetic induction device to supply power to the chip, the fan shaft can drive a closed conductor loop to cut a magnetic induction line or change magnetic flux to induce electricity generation when rotating, and the wireless power supply module simultaneously supplies power to the rotating speed sensor, the clutch control module and the wireless signal transmission module II, so that the recycling of the accessory power of the fan can be realized, and energy conservation is realized. The actual rotating speed signal of the fan monitored by the rotating speed sensor is transmitted to a wireless signal transmission module II in the clutch assembly, the rotating speed signal of the fan is transmitted to a wireless signal receiving module I of an engine ECU (electronic control Unit) after A/D (analog/digital) conversion, then the actual rotating speed is transmitted to a PID (proportion integration differentiation) controller as a feedback value after D/A (digital/analog) conversion, and the actual rotating speed is transmitted to a PID controller through KP、 Ki、KdAdjusting control parameter to correct output control amountAnd then adjusting the actual rotating speed of the fan to approach the target rotating speed, sequentially circulating a closed-loop control system, and finally completing the regulation and control of the actual rotating speed of the fan within the response time requirement range.
Referring to fig. 2, the wireless power supply module includes an induction coil unit, a magnetic supply unit, a rectification unit, and an electric energy storage unit, the induction coil unit and the magnetic supply unit perform relative motion to cut a magnetic induction line or change magnetic flux to generate power, and the induction coil unit, the rectification unit, and the electric energy storage unit are electrically connected in sequence to store the induced electric energy in the electric energy storage unit. The rectifying unit can convert the induced current from alternating current to direct current.
As shown in fig. 3, the induction coil unit and the magnetic supply unit in the wireless power supply module are both installed at the fan shaft which actively rotates, the fan shaft is arranged on an engine wheel system, the magnetic supply unit is fixedly arranged in a certain range of the induction coil, for example, the magnetic supply unit can be fixed by a bearing seat or a screw lock, and the like, and is used for providing a magnetic field with the magnetic field direction parallel to the fan axis, the center of the magnetic field is offset relative to the center of the fan shaft, the induction coil unit is arranged at the outer edge of the fan shaft, the normal vector of the induction coil unit is parallel to the direction of the magnetic field, when the fan shaft or the blades drive the induction coil unit to rotate, induction current is generated through the magnetic flux change of the induction coil relative to the bias magnetic field, and therefore power is supplied to control units such as chips and the like to achieve a control function.
Preferably, the magnetic supply unit may be a permanent magnet or an electromagnet including an electromagnetic coil, and the induction coil unit may be specifically disposed in a groove at an end of the fan shaft. It should be noted that the center of the magnetic field is offset from the center of the fan shaft (or the magnetic supply unit is fixed on one side of the fan shaft), so that the magnetic flux in the induction coil unit can change with the relative position of the induction coil and the magnetic supply unit when the fan shaft rotates, when the induction coil unit rotates to a position right above the offset magnetic field center of the magnetic supply unit, the magnetic flux is maximum, and after rotating 180 degrees, the magnetic flux is minimum, and the larger the offset degree of the magnetic field relative to the axis of the fan shaft, the more the electric quantity is generated by induction.
Preferably, the relative distance between the magnetic supply unit and the induction coil unit along the direction of the magnetic field or the direction of the fan axis is within 30cm, so that the strength of electromagnetic induction is ensured, and the electric energy storage unit is continuously charged. The electric energy storage unit is a capacitor or a rechargeable battery, the rechargeable battery can be a button rechargeable battery or a flexible lithium battery, and the electric energy storage unit supplies power for loads such as a rotating speed sensor, a clutch controller and a wireless signal transmission module. It should be noted that the above-mentioned manner of generating power by cutting the magnetic induction line or changing the magnetic flux by the relative movement between the induction coil unit and the magnetic supply unit can be various, and is not limited to the arrangement manner illustrated in fig. 3 of the present invention.
As shown in FIG. 4, the input and output quantities of the fan rotating speed closed-loop control system of the invention are all from the electric control silicone oil clutch fan assembly, and the system can thoroughly realize the wireless connection between the electric control silicone oil clutch fan assembly and the engine ECU, and does not influence the fan closed-loop control function. The system can recycle energy resources, and the elimination of the fan wiring harness reduces fault points of wiring harness fracture and abrasion; the elimination of the connector reduces the fault points of water inlet and pin short circuit of the connector; the assembly is simpler, the installation operation of fixing the connector and the wiring harness is not needed, the wiring harness fixing point is not needed to be added on the engine, and the cost is saved.
Referring to fig. 5, the invention discloses a control method of an electric control silicone oil fan with wireless power supply and signal transmission, which comprises the following steps:
step 1: air conditioner for collecting air inlet temperature, water temperature and air temperature of engine through engine ECU
Pressure and other parameter information of the engine and the whole vehicle sensor;
step 2: the wireless power supply module integrated on the fan shaft supplies power to the rotating speed sensor, and the wireless signal transmission module II feeds back the actual rotating speed of the fan to the closed-loop controller;
and step 3: the engine ECU determines the target rotating speed of the fan according to the acquired parameter information, and wirelessly transmits the target rotating speed to the clutch controller;
and 4, step 4: the clutch controller regulates and controls the rotating speed according to the target rotating speed, the rotating speed sensor wirelessly transmits the actual rotating speed in real time to feed back the actual rotating speed to the closed-loop controller, the closed-loop controller performs closed-loop regulation and control correction according to the fed-back actual rotating speed and the given target rotating speed, and the steps are sequentially circulated according to the sequence until the control precision is reached.
The whole system runs by the engine ECU wirelessly receiving the actual rotating speed of the fan according to the acquired sensor parameters, calculating the target rotating speed of the fan according to the parameters of the whole vehicle, converting the rotating speed into corresponding control signals, outputting clutch control signals through the wireless signal transmission module, and executing rotating speed regulation after the clutch wireless signal receiving module receives the clutch control signals. Meanwhile, the wireless power supply module supplies power to the rotating speed sensor and the clutch controller, wirelessly transmits a fan rotating speed signal to the ECU, corrects PID control parameters, wirelessly transmits the corrected clutch control signal to the clutch wireless signal receiving module, forms a wireless control closed-loop system, and sequentially and circularly and continuously regulates and optimizes the rotating speed of the fan to achieve control accuracy.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The electronic control silicone oil fan control system with wireless power supply and signal transmission is characterized by comprising an engine ECU and an electronic control silicone oil clutch fan assembly, wherein the engine ECU comprises a closed-loop controller and a first wireless signal transmission module, the electronic control silicone oil clutch fan assembly comprises a wireless power supply module, a rotating speed sensor, a clutch controller and a second wireless signal transmission module, the closed-loop controller is in signal connection with the first wireless signal transmission module, the first wireless signal transmission module and the second wireless signal transmission module can be in wireless communication, and the first wireless signal transmission module is used for sending a clutch control signal output by the closed-loop controller and receiving the actual rotating speed of a fan; the wireless power supply module is integrated on a fan shaft of the electric control silicone oil fan, power generation is realized in an electromagnetic induction mode when the main shaft of the engine is started to rotate, and the wireless power supply module supplies power to the rotating speed sensor, the clutch controller and the wireless signal transmission module II; and the second wireless signal transmission module is in signal connection with the rotating speed sensor and the clutch controller respectively.
2. The wireless power supply and signal transmission electric control silicone oil fan control system according to claim 1, wherein the closed-loop controller is a PID controller, the engine ECU is capable of receiving parameter information of an engine and a vehicle sensor, determining a set target rotation speed in a vehicle fan calibration database according to the parameter information, and outputting the target rotation speed to the PID controller as a given input parameter.
3. The wirelessly powered and signal transmitted electric-controlled silicone oil fan control system according to claim 2, wherein the parameter information of the engine and the vehicle sensor includes an engine intake air temperature, an engine water temperature, and an air conditioning pressure.
4. The wirelessly powered and signal transmitted electric-controlled silicone oil fan control system according to claim 1, wherein the type of the clutch control signal is specifically a PWM control signal, the first wireless signal transmission module and the second wireless signal transmission module are NRF wireless radio frequency chips, and the rotation speed sensor is a hall sensor.
5. The system for controlling the wirelessly powered and signal transmitted electric-controlled silicone oil fan according to claim 1, wherein the wireless power supply module comprises an induction coil unit, a magnetic power supply unit, a rectification unit and an electric energy storage unit, the induction coil unit and the magnetic power supply unit perform relative movement to cut magnetic induction lines or change magnetic flux to induce power generation, the induction coil unit, the rectification unit and the electric energy storage unit are electrically connected in sequence, and the rectification unit can convert the induced current from alternating current to direct current.
6. The system according to claim 5, wherein the induction coil unit and the magnetic supply unit in the wireless power supply module are both mounted on a fan shaft, the fan shaft is mounted on the engine wheel train, the magnetic supply unit is fixedly mounted in an induction range of the induction coil, the magnetic supply unit is configured to provide a magnetic field with a magnetic field direction parallel to the fan shaft, a center of the magnetic field is offset from a center of the fan shaft, the induction coil unit is disposed at an outer edge of the fan shaft, and a normal vector of the induction coil unit is parallel to the magnetic field direction.
7. The system for controlling the wirelessly powered and signal transmitted electrically controlled silicone oil fan according to claim 6, wherein a shortest distance between the magnetic power supply unit and the induction coil unit along a magnetic field direction or a fan axis direction is within 30 cm.
8. The wirelessly powered and signal transmitting electronically controlled silicone oil fan control system of claim 5, wherein the electrical energy storage unit is a capacitor or a rechargeable battery.
9. The wirelessly powered and signal transmitted electric-controlled silicone oil fan control system according to claim 5, wherein the magnetic power supply unit is an electromagnet or a permanent magnet.
10. The control method of the wireless power supply and signal transmission electric control silicone oil fan control system according to any one of claims 1 to 9, characterized by comprising the following steps:
step 1: acquiring parameter information of an engine and a finished automobile sensor through the engine ECU;
step 2: the wireless power supply module integrated on the fan shaft supplies power to the rotating speed sensor, and the wireless signal transmission module II feeds back the actual rotating speed of the fan to the closed-loop controller;
and step 3: and the engine ECU determines the target rotating speed of the fan according to the acquired parameter information, and wirelessly transmits the target rotating speed to the clutch controller.
And 4, step 4: the clutch controller regulates and controls the rotating speed according to the target rotating speed, the rotating speed sensor wirelessly transmits the actual rotating speed in real time and feeds the actual rotating speed back to the closed-loop controller, and the closed-loop controller performs closed-loop regulation and control correction according to the fed actual rotating speed and the given target rotating speed until the control precision is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111217736.0A CN113833557A (en) | 2021-10-19 | 2021-10-19 | Wireless power supply and signal transmission electric control silicone oil fan control system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111217736.0A CN113833557A (en) | 2021-10-19 | 2021-10-19 | Wireless power supply and signal transmission electric control silicone oil fan control system and method |
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| CN113833557A true CN113833557A (en) | 2021-12-24 |
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| CN202111217736.0A Pending CN113833557A (en) | 2021-10-19 | 2021-10-19 | Wireless power supply and signal transmission electric control silicone oil fan control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114810318A (en) * | 2022-05-05 | 2022-07-29 | 中国第一汽车股份有限公司 | Electromagnetic type electric control silicone oil clutch mechanical fan system and control method thereof |
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| US20190346894A1 (en) * | 2018-05-13 | 2019-11-14 | Asia Vital Components (China) Co., Ltd. | Fan signal wireless transmission system |
| CN111749781A (en) * | 2020-07-06 | 2020-10-09 | 潍柴动力股份有限公司 | Method and device for monitoring electric control silicone oil closed-loop clutch fan |
| CN112332547A (en) * | 2019-08-05 | 2021-02-05 | 上银科技股份有限公司 | Linear transmission device with wireless power supply function |
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| KR101383260B1 (en) * | 2013-08-23 | 2014-04-10 | (주)테너지 | Apparatus and method for controlling for cooling fan of car |
| US20190346894A1 (en) * | 2018-05-13 | 2019-11-14 | Asia Vital Components (China) Co., Ltd. | Fan signal wireless transmission system |
| CN112332547A (en) * | 2019-08-05 | 2021-02-05 | 上银科技股份有限公司 | Linear transmission device with wireless power supply function |
| CN111749781A (en) * | 2020-07-06 | 2020-10-09 | 潍柴动力股份有限公司 | Method and device for monitoring electric control silicone oil closed-loop clutch fan |
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| CN114810318A (en) * | 2022-05-05 | 2022-07-29 | 中国第一汽车股份有限公司 | Electromagnetic type electric control silicone oil clutch mechanical fan system and control method thereof |
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Application publication date: 20211224 |
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