KR20150058735A - Integrated control apparatus and method for fan motor and blower motor - Google Patents

Abstract

The present invention relates to a device and a method for the integrated control of a fan motor and a blower motor. The device comprises: a first motor; a second motor; a first driving unit and a second driving unit together in one package to drive the first motor and the second motor, respectively; and a control unit which controls the first driving motor and the second driving motor at a time or together based on a control signal for the first motor and the second motor transmitted from an external control device. An objective of the invention is to provide the device and method for the integrated control of the fan motor and the blower motor to keep the temperature of equipment within an adequate range when the temperature rises due to overload resulted from the integrated control of the fan motor and the blower motor.

Description

TECHNICAL FIELD [0001] The present invention relates to an integrated control apparatus for a fan motor and a blower motor,

The present invention relates to an integrated control device and method for a fan motor and a blower motor, and more particularly, to an integrated control device and method for a fan motor and a blower motor that can integrally control a fan motor and a blower motor.

Generally, an air conditioner is installed in most vehicles, and a control device for controlling the operation of the motor is installed to operate the blower of the air conditioner.

For example, when the air conditioner is an air conditioner, when the blower sucks and pressurizes the air by the operation of the motor, the pressurized air is cooled while passing through the evaporator, and air having a temperature adjusted to the set blowing amount can be supplied to the inside of the vehicle.

A motor (i.e., a blower motor) used for driving the blower is a direct current (DC) motor that is driven by switching by an electronic circuit using a transistor or a MOSFET instead of a brush and a commutator.

Most vehicles also use heat exchangers such as radiators, automatic transmission oil coolers, and intercoolers to cool the refrigerant used in engines, missions, and air conditioning systems.

However, since the heat exchangers perform the cooling operation by using the flow of the air flowing into the automobile from the outside, there is a problem that the performance of the heat exchanger is significantly degraded when the engine is operated while the automobile is stopped.

Therefore, an engine cooling fan is provided to force the flow of air required for the heat exchanger to assist the performance of the heat exchanger having the above problems. And an apparatus for controlling the operation of the motor for driving the engine cooling fan.

For example, the device for controlling the operation of the blower motor is installed in the interior of the vehicle, and receives a motor control signal from an air conditioner controller (FATC) of the vehicle to control the blower motor. An apparatus for controlling the operation of the engine cooling fan motor is installed outside the vehicle and receives a motor control signal from an engine controller (ECU) to control the cooling fan motor.

As described above, in the related art, since the blower motor and the cooling fan motor are controlled by using separate control devices, the cost is increased, and the noise can be separately managed for each separate control device without centralized management. There was a falling problem.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Registered Patent No. 10-1318686 (registered on May 10, 2013, a control method of a blower motor installed in a vehicle air conditioner).

SUMMARY OF THE INVENTION It is an object of the present invention to provide an integrated control device and method of a fan motor and a blower motor which are integrated to control the fan motor and the blower motor.

Another object of the present invention is to provide an integrated control device and method of a fan motor and a blower motor which can control the temperature of the device in an appropriate temperature range when the temperature of the device is increased by overloading by integrated control of the fan motor and the blower motor have.

An integrated controller of a fan motor and a blower motor according to an aspect of the present invention includes: a first motor and a second motor; A first driving unit and a second driving unit configured in one package and driving the first motor and the second motor, respectively; And a control unit which receives control signals of the first motor and the second motor from an external control unit and selects and controls all or one of the first driving unit and the second driving unit at the same time.

In the present invention, the first motor and the second motor are each a cooling fan motor and a blower motor.

In the present invention, the first driving unit and the second driving unit are switched by a PWM (Pulse Width Modulation) method to control on / off and rotation speeds of the first motor and the second motor.

In the present invention, the integrated controller of the fan motor and the blower motor is integrally formed in one package or module, and the temperature of the inside of the package or the module, the temperature around the control unit, And a temperature detector for detecting at least one of the temperatures of the at least one of the plurality of temperature sensors and applying the detected temperature to the control unit.

In the present invention, when the detected at least one temperature exceeds a predetermined temperature, the control unit may control the switching operation of the first and second driving units to maintain the temperature in the normal temperature range, And outputs the output signal.

In the present invention, in order to limit the switching operation of the first and second driving units, the control unit adjusts the duty of the PWM control signal to a maximum of 100% 0 (Low) so that the operation of the first and second motors Or to adjust the duty of the PWM control signal to a maximum of 100% 1 (High).

In the present invention, the external control means includes an engine controller and an air conditioner controller.

In the present invention, the integrated controller of the fan motor and the blower motor includes: a noise filter for blocking noise flowing in / out through a battery power supply path; First and second overvoltage preventing units for respectively protecting the first and second driving units and the first and second motors from damage due to a surge current or an overvoltage; A first and second speeds for controlling the rotational speeds of the first and second motors by switching the first and second driving units by generating a driving signal having a duty ratio according to a PWM control signal output from the control unit, A control unit; First and second current detectors for detecting currents flowing when the first and second motors are driven through the first and second driving units, respectively; And a first and a second signal amplifying unit for amplifying the voltage corresponding to the current detected through the first and second current detecting units to a level recognizable by the control unit and applying the amplified voltage to the control unit, .

In the present invention, the first and second overvoltage prevention units may include at least one of a Schottky diode, a TVR (Transient Voltage Rectifier) diode, and a Zener diode.

In the present invention, the control unit monitors each of the voltages at both ends of the first and second motors by connecting an arbitrary port to the (-) terminals of the first and second motors, respectively, And the rotation speed of the first and second motors can be determined.

According to another aspect of the present invention, there is provided an integrated control method for a fan motor and a blower motor, including a first and a second driving unit that are integrally formed in one package or module and drive first and second motors, respectively, And a controller for selecting and controlling at least one of the first, second, and / or the second drive units at the same time, wherein the control unit controls the temperature of the package or the module, Detecting at least one of a temperature around the control unit and a temperature around the first and second driving units; And outputting a PWM control signal for limiting the switching operation of the first and second driving units to maintain the temperature in the normal temperature range when the detected at least one temperature exceeds a predetermined temperature .

In the present invention, the first motor and the second motor are each a cooling fan motor and a blower motor.

In order to limit the switching operation of the first and second driving units, the control unit controls the duty of the PWM control signal to be at most 100% 0 (Low) to stop the operations of the first and second motors , Or adjusts the duty of the PWM control signal to a maximum of 100% 1 (High).

In the present invention, the control unit monitors the voltage across the terminals of the first and second motors by connecting the (-) terminals of the first and second motors to a certain port, respectively, And determining a rotational speed of the second motor.

The present invention is further characterized in that the control unit sequentially detects a control signal input from an external control unit to control the first and second motors at regular intervals.

In the present invention, the external control means includes an engine controller and an air conditioner controller.

The present invention allows a fan motor and a blower motor to be integrally controlled in one control device (i.e., an integrated control device of a fan motor and a blower motor), and the integrated control device can be mounted in a vehicle interior, So as to improve the efficiency of noise management and maintenance by driving each motor in a centralized manner and to control the temperature within the proper temperature range when the temperature of the device rises due to the overload caused by the integrated control of the fan motor and the blower motor do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary diagram showing a schematic configuration of an integrated controller of a fan motor and a blower motor according to an embodiment of the present invention; FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fan motor and a blower motor.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an integrated controller and method of a fan motor and a blower motor according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is an exemplary diagram showing a schematic configuration of an integrated controller of a fan motor and a blower motor according to an embodiment of the present invention.

1, an integrated controller of a fan motor and a blower motor according to an embodiment of the present invention includes a power supply unit 110, a noise filter 120, a first overvoltage prevention unit 210, A second speed control unit 320, a second speed control unit 320, a first driving unit 230, a first current detection unit 240, a first signal amplification unit 250, a second overvoltage prevention unit 310, A first current detector 330, a second current detector 340, a second signal amplifier 350, a temperature detector 410, a controller 510, a first motor M1, and a second motor M2.

In the apparatus according to an embodiment of the present invention, the first motor M1 corresponds to a cooling fan motor and the second motor M2 corresponds to a blower motor.

The power supply unit 110 is a power supply for supplying driving power to the apparatus and the first and second motors M1 and M2 according to an embodiment of the present invention and is supplied from a vehicle battery (not shown). Battery power is applied to the (+) terminals of the first and second motors M1 and M2.

The noise filter 120 blocks noise introduced or discharged through an input / output path of a battery power source. (I.e., the motor control apparatus according to an embodiment of the present invention) with respect to the electromagnetic noise through the noise filter 120. [

The noise filter 120 may include a permanent magnet and a coil installed inside the motors M1 and M2 when the first and second motors M1 and M2 are driven through the input / It is possible to block (or eliminate) the inflow of noise generated by the brush or the like.

The first and second overvoltage preventors 210 and 310 prevent the surge currents (or the overvoltage and the peak voltage) from being generated by the first and second drivers 230 and 330 and the first and second motors M1 and M2 ) From breakage by surge current.

For example, when a pulse width modulation (PWM) signal is used, a voltage coming from the coils of the first and second motors M1 and M2 is generated when the signal value is 0 (Low) The first and second motors M1 and M2 are subjected to impulsive overload. As a result, the speed of the first and second motors M1 and M2 may be reduced and the motor may be damaged by heat generated by the motor itself. Therefore, the first and second overvoltage preventing parts 210 and 310 protect the first and second driving parts 230 and 330 by blocking the surge current.

The first and second overvoltage prevention units 210 and 310 include at least one of a Schottky diode, a TVR (Transient Voltage Rectifier) diode, and a Zener diode.

The first and second overvoltage preventing portions 210 and 310 are connected to the first and second motors M1 and M2 in parallel.

For reference, the surge current is a current that can be generated in the reverse direction to the output when the switch of the electronic / electronic equipment is switched and damages the signal generation and the power supply circuit, which is several times the input voltage. The surge current is mainly generated in a solenoid (for example, a coil using a transformer or a motor).

The first and second speed control units 220 and 320 generate a driving signal having a duty ratio according to the PWM control signal output from the control unit 510. And switches the first and second driving units 230 and 330 according to the driving signal.

For example, the first and second speed control units 220 and 320 are turned on / off by a PWM control signal output from the control unit 510. And generates a drive signal having a duty ratio corresponding to the on / off. The rotational speeds of the first and second motors M1 and M2 increase and the rotational speeds of the first and second motors M1 and M2 decrease when the on duty is high .

The first and second driving units 230 and 330 are driven (that is, switched) by the driving signals output from the first and second speed control units 220 and 320. And switches on / off the power flowing to the first and second motors M1 and M2 through the switching.

The control unit 510 controls each of the first and second motors M1 and M2 using a PWM control signal and controls the first and second motors M1 and M2 according to the PWM control signal. And the rotational speed is controlled. Therefore, the controller 510 controls the driving of the first and second motors M1 and M2 stably in a state in which noise is minimized.

For reference, although there is a slight difference depending on the motor, the motor is in a state in which there is no resistance in the coil in the stop state, so that a considerably large current flows, and in the motor start state in which the rotation starts in the stop state, Is ignored for a very short period of time, and when it starts to rotate normally, the current is reduced to its normal value.

Therefore, a current according to the rotation state of the motor depends on the load of the motor (for example, a prop) rather than the voltage applied to the motor. For example, when a predetermined voltage is applied to the motor, In this case, when the current applied to the motor exceeds the allowable value, a situation that the motor is burned can be issued.

Therefore, it is necessary to detect the current flowing in the motor.

The first and second current detectors 240 and 340 detect a current applied when the first and second motors M1 and M2 are driven through the first and second drivers 230 and 330 .

The first and second current detectors 240 and 340 can be configured by using a resistor having a very small resistance value (a shunt resistor), and measuring the voltage (i.e., both voltage) generated in the shunt resistor The current corresponding to the voltage can be measured.

However, the voltage detected through the shunt resistor is very small.

Therefore, the first and second signal amplifiers 250 and 350 amplify the voltage detected through the shunt resistor several times or more. The control unit 510 applies the amplified voltage (i.e., the voltage corresponding to the detection current) to the control unit 510 so that the voltage can be stably applied to the control unit 510 even if the A / D converter is not included. Current corresponding to the voltage) can be measured.

The controller 510 adjusts the duty of the PWM control signal applied to the first and second drivers 230 and 330 according to the detected amount of current to drive the first and second motors M1 and M2 . At this time, the controller 510 may adjust the duty of the PWM control signal to 100% 0 (Low) or 100% 1 (High).

In addition, the controller 510 may monitor a voltage of the first and second motors M1 and M2 by connecting an arbitrary port to the (-) terminals of the first and second motors M1 and M2. That is, both positive and negative voltages of the first and second motors M1 and M2 can be detected. (+) And (-) voltages of the first and second motors (M1, M2) are detected, the motor drive voltage can be known by the PWM control signal, and the first, The rotational speeds of the second motors M1 and M2 can be known.

The control unit 510 receives a first motor control signal from an engine controller (ECU) (not shown), and receives a second motor control signal from an air conditioner controller (FATC) (not shown).

The controller 510 sequentially detects the inputs of the first and second motor control signals at regular intervals. The controller 510 controls on / off and rotation speeds of the first and second motors M1 and M2 according to the input first and second motor control signals. That is, the control unit 510 may control only one of the first and second motors M1 and M2, or may control the first and second motors M1 and M2 at the same time.

In particular, when the first and second motors M1 and M2 are controlled at the same time, the temperatures of the first and second driving units 230 and 330 controlled by the PWM method can be increased. Also, since the motor control apparatus according to an embodiment of the present invention is formed in a package form, the temperature inside the package can be raised according to the temperature rise of the first and second driving units 230 and 330, The temperature of the control unit 510 is increased.

However, the controller 510 may malfunction or be damaged if the temperature rises above 150 통상.

Therefore, the controller 510 detects a temperature inside the package, a temperature around the controller 510, and a temperature around the first and second drivers 230 and 330 through the temperature detector 410. When the detected temperature exceeds a preset temperature (for example, 150 ㅀ), the controller 510 controls the operations of the first and second drivers 230 and 330 to lower the temperature.

For example, in order to lower the temperature, the controller 510 adjusts the duty of the PWM control signal to 100% 0 (Low) or 100% 1 (High). This is because the temperature of the first and second driving units 230 and 330 rises due to switching by PWM control.

When the operation of the first and second motors M1 and M2 can not be stopped, the duty of the PWM control signal is adjusted to a maximum of 100% 1 (High), and the first and second motors M1 and M2, M2, the duty of the PWM control signal is adjusted to 100% at maximum to 0 (Low).

(E.g., maximum / minimum speed, driving time, etc.) of the first and second motors M1 and M2 are set in the internal memory (not shown) of the control unit 510 It is possible to store relevant information so as to enable accurate control according to the operation state of each motor.

2 is a flowchart illustrating an integrated control method of a fan motor and a blower motor according to an embodiment of the present invention.

As shown in FIG. 2, the controller 510 receives the first and second motor control signals from external control means (for example, an engine controller and an air conditioner controller) (S101).

The first and second motor control signals are signals for controlling the cooling fan motor and the blower motor, and may be input to the cooling fan motor and the blower motor, respectively.

The controller 510 sequentially detects the inputs of the first and second motor control signals at regular intervals. Therefore, even if the first and second motor control signals are input at the same time, a slight difference may occur in the actual detection time.

The control unit 510 selectively controls on / off and rotation speed of any one or both of the first and second motors M1 and M2 according to the input first and second motor control signals (S102).

When all of the first and second motors M1 and M2 are controlled at the same time, the temperatures of the first and second driving units 230 and 330 controlled by the PWM method (that is, in a switching manner) And can rise sharply. The internal temperature of the motor control apparatus according to the present embodiment configured in the form of a package (or module) and the temperature of the control unit 510 itself may increase.

Accordingly, the controller 510 controls at least one of the temperature inside the package, the temperature around the controller 510, and the temperature around the first and second drivers 230 and 330 through the temperature detector 410 (S103).

If the detected temperature exceeds the preset temperature, the controller 510 controls the operations of the first and second drivers 230 and 330 to maintain the temperature within the normal temperature range, And controls the on / off and rotation speeds of the first and second motors M1 and M2 (S104).

For example, in order to limit the switching operation of the first and second driving units 230 and 330, the controller 510 controls the duty of the PWM control signal to be 100% The first and second motors M1 and M2 are operated by stopping the operation of the motors M1 and M2 or adjusting the duty of the PWM control signal to a maximum of 100%

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand the point. Accordingly, the technical scope of the present invention should be defined by the following claims.

110: Power supply unit 120: Noise filter
210: first overvoltage prevention unit 220: first speed control unit
230: first driving part 240: first current detecting part
250: first signal amplifying unit 310: second overvoltage preventing unit
320: second speed control unit 330: second driving unit
340: second current detecting section 350: second signal amplifying section
410: temperature detecting unit 510:
M1: first motor M2: second motor

Claims (16)

A first motor and a second motor;
A first driving unit and a second driving unit configured in one package and driving the first motor and the second motor, respectively; And
And a controller for receiving control signals of the first motor and the second motor from external control means and selecting and controlling at least one of the first driving unit and the second driving unit at the same time, And an integrated controller of the blower motor.
2. The motor control apparatus according to claim 1, wherein the first motor and the second motor comprise:
Wherein the cooling fan motor and the blower motor are respectively a cooling fan motor and a blower motor.
The apparatus of claim 1, wherein the first driver and the second driver comprise:
And controls the on / off and rotation speeds of the first motor and the second motor by a PWM (Pulse Width Modulation) method, thereby controlling the integrated control of the fan motor and the blower motor.
The apparatus of claim 1, wherein the integrated controller of the fan motor and the blower motor comprises:
It is integrated into one package or module,
And a temperature detector for detecting at least one of a temperature inside the package or the module, a temperature around the control unit, and a temperature around the first and second driving units, and applying the detected temperature to the control unit. Integrated control of motor.
The apparatus according to claim 1 or 4,
When the detected at least one temperature exceeds a preset temperature,
And outputs a PWM control signal for limiting the switching operation of the first and second driving units to maintain the temperature in the normal temperature range.
6. The apparatus of claim 5,
In order to limit the switching operation of the first and second driving units,
The operation of the first and second motors is stopped by adjusting the duty of the PWM control signal at a maximum of 100% 0 (Low), or the duty of the PWM control signal is adjusted to a maximum of 100% 1 A fan motor and a blower motor.
The apparatus according to claim 1,
An engine controller, and an air conditioner controller.
The apparatus of claim 1, wherein the integrated controller of the fan motor and the blower motor comprises:
A noise filter for blocking noise entering / exiting through the battery power path;
First and second overvoltage preventing units for respectively protecting the first and second driving units and the first and second motors from damage due to a surge current or an overvoltage;
A first and second speeds for controlling the rotational speeds of the first and second motors by switching the first and second driving units by generating a driving signal having a duty ratio according to a PWM control signal output from the control unit, A control unit;
First and second current detectors for detecting currents flowing when the first and second motors are driven through the first and second driving units, respectively; And
And first and second signal amplifying units amplifying voltages corresponding to the currents detected through the first and second current detecting units to a level recognizable by the control unit and applying the amplified voltages to the control unit, The fan motor and the blower motor.
[8] The apparatus of claim 8, wherein the first and second overvoltage preventing portions comprise:
A Schottky diode, a TVR (Transient Voltage Rectifier) diode, and a Zener diode.
The apparatus of claim 1,
(-) terminal of the first and second motors, respectively, to monitor the voltages across the terminals of the first and second motors, respectively, and to control the rotational speeds of the first and second motors Wherein the fan motor and the blower motor are connected to each other by a fan motor.
And a control unit that is integrally formed in one package or module and selects and controls one or both of the first and second driving units for driving the first and second motors and the first and second driving units at the same time A method for integrally controlling the first and second motors of a motor integrated control apparatus,
Detecting at least one of a temperature inside the package or module, a temperature around the control unit, and a temperature around the first and second driving units; And
When the detected at least one temperature exceeds a preset temperature,
And outputting a PWM control signal for limiting the switching operation of the first and second driving units to maintain the temperature in the normal temperature range.
The motor control apparatus according to claim 11, wherein the first motor and the second motor comprise:
Wherein each of the fan motor and the blower motor is a cooling fan motor and a blower motor.
12. The method of claim 11,
In order to limit the switching operation of the first and second driving units,
The operation of the first and second motors is stopped by adjusting the duty of the PWM control signal at a maximum of 100% 0 (Low), or the duty of the PWM control signal is adjusted to a maximum of 100% 1 And the fan motor and the blower motor.
12. The method of claim 11,
The control unit monitors the voltage across the terminals of the first and second motors by connecting the (-) terminals of the first and second motors to a certain port, respectively, and controls the voltages of the first and second motors And determining the rotational speed of the fan motor and the blower motor.
12. The method of claim 11,
And controlling the fan motor and the blower motor based on the control signal, wherein the control unit sequentially detects a control signal input from an external control unit to control the first and second motors at regular intervals. .
16. The apparatus according to claim 15,
An engine controller, and an air conditioner controller.

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