KR20040046385A - Blower fan motor circuit of vehicle - Google Patents

Blower fan motor circuit of vehicle Download PDF

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Publication number
KR20040046385A
KR20040046385A KR1020020074305A KR20020074305A KR20040046385A KR 20040046385 A KR20040046385 A KR 20040046385A KR 1020020074305 A KR1020020074305 A KR 1020020074305A KR 20020074305 A KR20020074305 A KR 20020074305A KR 20040046385 A KR20040046385 A KR 20040046385A
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KR
South Korea
Prior art keywords
voltage
blower fan
fan motor
control signal
driving
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KR1020020074305A
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Korean (ko)
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KR100482456B1 (en
Inventor
김종건
동근명
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주식회사 두원전자
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Priority to KR10-2002-0074305A priority Critical patent/KR100482456B1/en
Publication of KR20040046385A publication Critical patent/KR20040046385A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00828—Ventilators, e.g. speed control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
    • B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/025—Current limitation using field effect transistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

PURPOSE: A blower fan motor drive circuit of a vehicle is provided to sharply improve power loss and driving performance, prevent breakage of a driving device, and improve reliability and economical efficiency through reduction of the number of parts and simplification of the assembling of parts. CONSTITUTION: A blower fan motor drive circuit of a vehicle comprises an air conditioner controller(100) turning off a drive signal cutoff transistor(150) and outputting a reference voltage command value to a constant voltage controller(140) if a user turns on an air conditioner switch; the constant voltage controller outputting a square wave control signal through comparison of the reference voltage command value input and a feedback voltage follow-up value; a drive voltage amplifier(170) amplifying a predetermined drive control signal and supplying a drive control signal to gate resistances(261,262); the gate resistances deciding the switching speed and a drain current; a MOSFET(Metal-Oxide Semiconductor Field Effect Transistor) power device(250) making a coil of a blower fan motor(190) connected to an earth; over-voltage protective clamp diodes(131,132) protecting an input end of the constant voltage controller from surge voltage; a switching speedup condenser(160) charging or discharging a base current, for high-speed switching of the drive voltage amplifier; a mini fuse(180) preventing breakage of a driving device and connecting the power of a battery; and the blower fan motor.

Description

차량의 블로어 팬모타 구동 회로{BLOWER FAN MOTOR CIRCUIT OF VEHICLE}Blower fan motor driving circuit of vehicle {BLOWER FAN MOTOR CIRCUIT OF VEHICLE}

본 발명은 차량(자동차,굴착기,특장차)의 블로어 팬모터 구동회로에 관한 것이다.The present invention relates to a blower fan motor driving circuit of a vehicle (automobile, excavator, special vehicle).

원래 자동차의 에어콘제어기(FATC)는 희망하는 실내온도를 얻기 위해서는 자동차의 실내 공기를 조절된 공기와 변환시킬 필요가 있으며, 이를 위해 필요한 풍량을 만들기 위해 블로어 팬 속도를 컨트롤하는 것은 매우 중요하다.Originally, the car's air conditioner (FATC) needs to convert the car's indoor air to regulated air to achieve the desired room temperature, and it is very important to control the blower fan speed in order to create the required air volume.

그러나 종래에는 에어콘 블로어 팬을 고속(HI)단으로 구동될 때 전력트랜지스터의 콜렉터-에미터간의 전압강하가 큼으로 모터 록(LOCK)될 때 대전류로 인해 전력트랜지스터의 발열로 인한 소자의 파열 문제점이 있었으며, 또한 HI단을 위한바이패스릴레이가 추가됨으로 원가가 상승되는 문제점이 있다.However, in the related art, when the air conditioner blower fan is driven at high speed (HI), the voltage drop between the collector and emitter of the power transistor is large, and when the motor is locked, the rupture of the device due to the heat generation of the power transistor is caused by the large current. In addition, there is a problem that the cost is increased by the addition of the bypass relay for the HI stage.

본 발명은 상기한 바와 같은 종래의 문제점을 해소하기 위해 발명된 것으로, 본 발명은, 기존의 전력트랜지스터구동모듈을 MOSFET구동모듈로 구동회로를 변경하여 전력소자의 전압강하를 감소시킴으로써 열발생의 원인인 전력손실 및 구동능력이 대폭 향상되었으며, 또한 모터 록(LOCK)시 큰 전류로 인한 구동소자 파열 및 전류내량 문제도 개선되었다. 따라서 전원릴레이, 바이패스릴레이등을 삭제함으로써 부품수의 감소, 부품조립의 단순화를 통해 신뢰성, 경제성측면에서 경쟁력을 제고할 수 있는 효과가 있다.The present invention has been invented to solve the conventional problems as described above, the present invention, by changing the drive circuit from the existing power transistor drive module to the MOSFET drive module to reduce the voltage drop of the power device cause of heat generation The power loss and driving ability have been greatly improved, and the problem of drive element rupture and current tolerance due to large current during motor lock has also been improved. Therefore, by eliminating the power relay and bypass relay, it is possible to improve the competitiveness in terms of reliability and economic efficiency by reducing the number of parts and simplifying the assembly of parts.

도1은 종래 기술에 따른 자동차의 블로어 팬모터 구동 회로도.1 is a blower fan motor driving circuit diagram of a vehicle according to the prior art.

도2의 (a)는 도1에 있어서, 전력트랜지스터구동모듈의 회로도이며 (b)와 (c)는 입출력신호 특성도.FIG. 2A is a circuit diagram of a power transistor drive module in FIG. 1, and FIGS. 2B and 3C are an input / output signal characteristic diagram.

도3의 (a)는 본 발명에 따른 자동차의 블로어 팬모터 구동 회로도이며 (b)는 MOSFET구동모듈의 회로도.Figure 3 (a) is a blower fan motor driving circuit diagram of the vehicle according to the present invention (b) is a circuit diagram of the MOSFET drive module.

사용자가 에어콘스위치(미도시됨)를 '온'시키면 에어콘제어기마이콤(120)의 포트(P1)를 통해 구동신호차단트랜지스터(150)을 '오프' 시킴과 더불어 포트(P2)를 통해서 정전압제어기(140)으로 기준전압지령값을 출력하는 에어콘제어기(100)과, 기준전압지령값이 입력되면 모터로부터 피드백되는 궤환전압추종값과 비교하여 구형파 제어신호를 출력하는 정전압제어기(140), 구형파 제어신호가 입력되면 소정의 구동제어신호를 증폭하여 온도퓨즈(210)를 통해 게이트저항(261,262)에 구동제어신호를 공급하는 구동전압증폭기(170), 구동제어신호가 입력되면 MOSFET전력소자(250)의 게이트 입력단에 충방전 전하를 제어하여 스위칭속도, 드레인전류를 결정하는 게이트저항(261,262), 드레인-소스간의 턴온저항을 극소화함으로써 블로어팬모터(190)의 코일이 접지에 연결되게 하는 MOSFET전력소자(250), 블로어팬모터(190)로부터 궤환전압루프상에 발생될 수 있는 서지전압으로부터 정전압제어기(140)의 입력단을 보호하는 과전압보호클램프다이오드(131,132), 정전압제어기(140)으로부터 구형파 제어신호가 입력되면 구동전압증폭기(170)을 고속스위칭을 할 수 있도록 베이스전류를 충전 또는 방전하도록 하는 스위칭속도업콘덴서(160)을 포함하는 에어콘제어기(FATC)(100), 모터 록(LOCK)될 때 큰 전류로 인한 구동소자 파열을 방지하며 배터리 전원(B+)을 연결하는 미니퓨즈(180)과, 블로어팬모터(190)등으로 구성된 자동차, 굴착기, 특장차의 블로어 팬모터 속도 제어용 구동회로이다.When the user 'turns on' the air conditioner switch (not shown), the driving signal blocking transistor 150 is turned off through the port P1 of the air conditioner microcomputer 120 and the constant voltage controller (through the port P2). 140), the air conditioner controller 100 for outputting a reference voltage command value, and the constant voltage controller 140 for outputting a square wave control signal compared to the feedback voltage tracking value fed back from the motor when the reference voltage command value is input, the square wave control signal. Is inputted, the drive voltage amplifier 170 amplifies a predetermined drive control signal and supplies the drive control signal to the gate resistors 261 and 262 through the temperature fuse 210, and when the drive control signal is inputted, The coil of the blower fan motor 190 is connected to the ground by minimizing the gate resistances 261 and 262 which determines the switching speed, the drain current, and the drain-source turn-on resistance by controlling the charge / discharge charges at the gate input terminal. Overvoltage protection clamp diodes (131, 132), constant voltage controller 140 to protect the input terminal of the constant voltage controller 140 from the surge voltage that may be generated on the feedback voltage loop from the MOSFET power device 250, blower fan motor 190 When the square wave control signal is input from the air conditioner (FATC) 100, including the switching speed up capacitor 160 for charging or discharging the base current so as to enable high-speed switching of the driving voltage amplifier 170, the motor lock ( Drives for controlling blower fan motor speed in automobiles, excavators, and special vehicles consisting of a mini-fuse 180 and a blower fan motor 190 that prevent battery drive rupture due to large current and connect the battery power (B +) when locked. Roy.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

제1도은 종래기술에 따른 자동차의 블로어 팬모터 구동회로에 관한 것으로, 제1도에 도시된 참조부호 1은 에어콘제어기마이콤, 2는 전력트랜지스터구동모듈, 3은 블로어팬모터, 4는 바이패스릴레이, 5는 전원릴레이, 6은 미니퓨즈, 7은 전원릴레이구동트랜지스터, 8은 바이패스릴레이구동트렌지스터, 9은 구동신호차단트랜지스터, 10은 전류증폭트랜지스터, 11은정전압제어기, 12는 궤환전압증폭기, 13은 에어콘제어기이다.1 is related to a blower fan motor driving circuit of a vehicle according to the prior art, reference numeral 1 shown in FIG. 1 denotes an air conditioner microcomputer, 2 is a power transistor driving module, 3 is a blower fan motor, and 4 is a bypass relay. , 5 is power relay, 6 is mini fuse, 7 is power relay drive transistor, 8 is bypass relay drive transistor, 9 is drive signal blocking transistor, 10 is current amplifier transistor, 11 is constant voltage controller, 12 is feedback voltage amplifier, 13 is an air conditioner controller.

상기와 같이 구성된 자동차의 블로어 팬모터 구동회로에 있어서, 에어콘제어기마이콤(1)이 포트(P1)를 통해 전원릴레이구동트랜지스터(7)을 '온'시키고, 더불어 포트(P4)에 기준전압지령값을 출력시키면 정전압제어기(11)가 작동하여 궤환전압증폭기(12)의 궤환전압(Vfb)과 비교하여 전류증폭트랜지스터(10)을 통해 전력트랜지스터구동모듈(2)의 B단자에 베이스 전류를 공급하면, 배터리전원(B+)이 상기미니퓨즈(6), 전원릴레이(5) 및 전력트랜지스터구동모듈(2)를 통해 모터전류을 공급하게 함으로써 블로어 팬모터(3)가 구동하게 된다. 따라서 포트(P4)에 기준전압지령값에 따라 블로어 팬모터의 속도를 제어하게 된다. 그러나 상기한 바와 같은 종래기술에 따른 자동차의 블로어 팬모터의 속도를 제어하는 구동회로는 제2도 (c)에 도시된 바와 같이, 고속단(HI단)으로 구동할 때, 좀더 상세하게는 포트(P4)의 기준전압 지령값이 최소값(Vin = 0.42V)을 출력할 때, 전력트랜지스터구동모듈(2)의 콜렉터-에미터간에 전압강하(Vout)가 심하므로 블로어 팬모터의 속도가 저하되고, 전력손실이 많은 문제점이 있어서, 상기한 바와 같은 바이패스릴레이구동트랜지스터(8)을 통해 바이패스릴레이(4)를 구동하게 하여 전력트랜지스터구동모듈(2)를 거치지 않고 배터리전원의 접지로 바이패스를 시키는 방식으로 블로어팬모터를 최대속도로 동작시키는 구동회로를 적용함으로서 전원릴레이구동트랜지스터(7), 바이패스 릴레이구동트랜지스터(8), 전원릴레이(5), 바이패스릴레이(4)등의 부품이 추가됨으로 원가상승의 요인이 되고, 배선이 복잡해지는 문제점이 있었다.In the blower fan motor driving circuit of the vehicle configured as described above, the air conditioner microcomputer 1 'turns on' the power relay driving transistor 7 through the port P1, and the reference voltage command value to the port P4. When the output voltage is outputted, the constant voltage controller 11 operates to supply the base current to the B terminal of the power transistor driving module 2 through the current amplifier transistor 10 in comparison with the feedback voltage Vfb of the feedback voltage amplifier 12. The blower fan motor 3 is driven by allowing the battery power source B + to supply motor current through the mini-fuse 6, the power relay 5, and the power transistor drive module 2. Therefore, the speed of the blower fan motor is controlled in the port P4 according to the reference voltage command value. However, the driving circuit for controlling the speed of the blower fan motor of the vehicle according to the prior art as described above, as shown in Figure 2 (c), when driven in the high speed stage (HI stage), more specifically the port When the reference voltage command value of (P4) outputs the minimum value (Vin = 0.42V), the voltage drop (Vout) is severe between the collector and the emitter of the power transistor drive module 2, so the speed of the blower fan motor is reduced. Since there is a problem in that a lot of power loss occurs, the bypass relay driving transistor 8 drives the bypass relay 4 to bypass the power transistor driving module 2 to the ground of the battery power source. By applying a drive circuit that operates the blower fan motor at the maximum speed in such a way as to control the voltage, the components such as the power relay driving transistor (7), the bypass relay driving transistor (8), the power relay (5), and the bypass relay (4) this As a result, cost increases, and wiring becomes complicated.

제3도는 본 발명에 따른 자동차의 블로어 팬모터 구동회로의 회로도로서, 제3도에서 도시된 참조부호100은 에어콘제어기(FATC), 120은 에어콘제어기마이콤, 131,132는 과전압보호클램프다이오드140은 정전압제어기, 150은 구동신호차단트랜지스터, 160은 스위칭속도업콘덴서, 170은 구동전압증폭기, 180은 미니퓨즈, 190은 블로어팬모터, 200은 MOSFET구동모듈이다.FIG. 3 is a circuit diagram of a blower fan motor driving circuit of a vehicle according to the present invention, wherein reference numeral 100 shown in FIG. 150 is a drive signal blocking transistor, 160 is a switching speed up capacitor, 170 is a driving voltage amplifier, 180 is a minifuse, 190 is a blower fan motor, and 200 is a MOSFET drive module.

상기 에어콘제어기(100)은 사용자가 에어콘스위치(미도시됨)를 '온'시키면 에어콘제어기마이콤(120)의 포트(P1)를 통해 구동신호차단트랜지스터(150)을 '오프' 시킴과 더불어 포트(P2)를 통해서 정전압제어기(140)으로 기준전압지령값을 출력하게 된다. 상기 정전압제어기(140)는 기준전압지령값(Vin)이 입력되면 모터로부터 피드백된 궤환전압추종값(Vfb)과 비교하여 구형파 제어신호를 출력하게 된다.When the user 'on' the air conditioner switch (not shown), the air conditioner controller 100 turns off the driving signal blocking transistor 150 through the port P1 of the air conditioner microcomputer 120 and the port ( The reference voltage command value is output to the constant voltage controller 140 through P2). When the reference voltage command value Vin is input, the constant voltage controller 140 outputs a square wave control signal by comparing the feedback voltage tracking value Vfb fed back from the motor.

상기 구동전압증폭기(170)는 구형파 제어신호가 입력되면 소정의 구동제어신호를 증폭하여 온도퓨즈(210)를 통해 게이트저항(261)에 구동제어신호를 공급하도록한다. 상기 게이트저항(261,262)는 구동제어신호가 입력되면 MOSFET전력소자(250)의 게이트 입력단에 충방전 전하를 제어함으로 스위칭속도, 드레인전류를 결정하도록 되어 있다.When the square wave control signal is input, the driving voltage amplifier 170 amplifies a predetermined driving control signal to supply the driving control signal to the gate resistor 261 through the temperature fuse 210. The gate resistors 261 and 262 are configured to determine the switching speed and the drain current by controlling the charge and discharge charges at the gate input terminal of the MOSFET power device 250 when the driving control signal is input.

상기 MOSFET전력소자(250)은 게이트 입력단의 충방전 전하에 따라 드레인전류를 증폭하는 효과를 제공함으로써 좀더 상세하게는 MOSFET전력소자(250)의 드레인-소스간의 턴온저항을 극소화함으로써 블로어팬모터의 코일이 접지에 연결됨에 따라 배터리 전원(B+)이 미니퓨즈(180)을 통해 블로어팬모터(190)으로 공급됨으로 에어콘의 블로어팬모터(190)가 구동하게 된다. 따라서 상기의 정전압제어기(140)에 입력되는 기준전압지령값에 따라 블로어팬모터(190)의 양단전압을 조정하게 됨으로써 블로어팬모터(190)의 속도를 제어할 수 있도록 한다.The MOSFET power device 250 provides an effect of amplifying the drain current according to the charge / discharge charge of the gate input terminal, and more specifically, minimizes the turn-on resistance between the drain and the source of the MOSFET power device 250, thereby reducing the coil of the blower fan motor. As it is connected to the ground, the battery power source B + is supplied to the blower fan motor 190 through the minifuse 180 to drive the blower fan motor 190 of the air conditioner. Accordingly, the speed of the blower fan motor 190 can be controlled by adjusting the voltage between the both ends of the blower fan motor 190 according to the reference voltage command value input to the constant voltage controller 140.

여기서 상기 과전압보호클램프다이오드(131,132)는 궤환전압 루프상에 발생될 수 있는 과도성 서지전압으로부터 정전압제어기(140)의 입력단을 보호하는 역할을 하도록 한다. 또한 상기 스위칭속도업콘덴서(160)은 정전압제어기(140)으로부터 구형파 제어신호가 입력되면 구동전압증폭기(170)을 고속스위칭을 할 수 있도록 베이스전류를 신속히 충전 또는 방전하도록 한다. 상기의 특징들을 상기 에어콘제어기(100)에 포함하고 있다. 그리고 상기 MOSFET구동모듈(200)은 다음과 같은 특징을 구비하고 있다.The overvoltage protection clamp diodes 131 and 132 serve to protect the input terminal of the constant voltage controller 140 from a transient surge voltage that may occur on the feedback voltage loop. In addition, the switching speed up capacitor 160 charges or discharges the base current quickly so that the driving voltage amplifier 170 can be quickly switched when the square wave control signal is input from the constant voltage controller 140. The above features are included in the air conditioner 100. The MOSFET driving module 200 has the following features.

상기 온도퓨즈((210)은 방열기의 온도가 최대정격이상으로 과열시 MOSFET전력소자(250) 및 여타의 주변부품을 보호하기 위한 Thermal cutoff기능을 구비하고 있다. 상기 역극방지다이오드(220)은 콘넥터 핀 오삽입시에 게이트회로를 보호하도록 한다. 상기 서너버 콘덴서(230)은 고속스위칭시에 MOSFET전력소자(250)의 드레인-소스간에 과도전압, 과도전류에 의한 스위칭노이즈를 완화시키기 위한 충방전 콘덴서의 역할을 한다. 상기 정전기클램프제너다이오드(241,242)는 정전기 또는 서지전압이 입력될 때 MOSFET전력소자(250)의 게이트입력전압을 일정전압으로 제한하는 서지흡수소자로써 역할을 하게 된다.The temperature fuse 210 has a thermal cutoff function to protect the MOSFET power device 250 and other peripheral components when the temperature of the radiator is overheated to a maximum rating or higher. The surge circuit 230 protects the gate circuit during pin misinsertion, and charge / discharge to reduce switching noise due to transient voltage and transient current between the drain and the source of the MOSFET power device 250 during high-speed switching. The electrostatic clamp Zener diodes 241 and 242 serve as surge absorbing elements that limit the gate input voltage of the MOSFET power device 250 to a constant voltage when an electrostatic or surge voltage is input.

이상에서 살펴본 바와 같이 본 발명에 따르면 기존의 전력트랜지스터구동모듈을 MOSFET구동모듈로 구동회로를 변경하여 전력소자의 전압강하를 감소시킴으로써 열발생의 원인인 전력손실 및 구동능력이 대폭 향상되었다. 또한 모터 록(LOCK)시 큰 전류로 인한 구동소자 파열 및 전류내량 문제도 개선되었다. 따라서 전원릴레이, 바이패스릴레이등을 삭제함으로써 부품수의 감소, 부품조립의 단순화를 통해 신뢰성, 경제성측면에서 경쟁력을 제고할 수 있는 효과가 있다.As described above, according to the present invention, by changing the driving circuit from the existing power transistor driving module to the MOSFET driving module, the voltage drop of the power device is reduced, thereby greatly improving power loss and driving ability, which are causes of heat generation. In addition, the problem of driving element rupture and current tolerance due to large current during motor lock has been improved. Therefore, by eliminating the power relay and bypass relay, it is possible to improve the competitiveness in terms of reliability and economic efficiency by reducing the number of parts and simplifying the assembly of parts.

Claims (2)

사용자가 에어콘스위치를 '온'시키면 에어콘제어기마이콤(120)의 포트(P1)를 통해 구동신호차단트랜지스터(150)을 '오프' 시킴과 더불어 포트(P2)를 통해서 정전압제어기(140)으로 기준전압지령값을 출력하는 에어콘제어기(100)과, 기준전압지령값이 입력되면 모터로부터 피드백되는 궤환전압추종값과 비교하여 구형파 제어신호를 출력하는 정전압제어기(140), 구형파 제어신호가 입력되면 소정의 구동제어신호를 증폭하여 온도퓨즈(210)를 통해 게이트저항(261,262)에 구동제어신호를 공급하는 구동전압증폭기(170), 구동제어신호가 입력되면 MOSFET전력소자(250)의 게이트 입력단에 충방전 전하를 제어하여 스위칭속도,드레인전류를 결정하는 게이트저항(261,262),드레인-소스간의 턴온저항을 극소화함으로써 블로어팬모터(190)의 코일이 접지에 연결되게 하는 MOSFET전력소자(250), 블로어팬모터(190)로부터 궤환전압루프상에 발생될 수 있는 서지전압으로 부터 정전압제어기(140)의 입력단을 보호하는 과전압보호클램프다이오드(131,132), 정전압제어기(140)으로부터 구형파 제어신호가 입력되면 구동전압증폭기(170)을 고속스위칭을 할 수 있도록 베이스전류를 충전 또는 방전하도록 하는 스위칭속도업콘덴서(160)을 포함하는 에어콘제어기(FATC)(100), 모터 록(LOCK)될 때 큰 전류로 인한 구동소자 파열을 방지하며 배터리 전원(B+)을 연결하는 미니퓨즈(180)과, 블로어팬모터(190)등으로 구성된 것을 특징으로 하는 차량의 블로어 팬모터 속도 제어용 구동회로.When the user 'turns on' the air conditioner switch, the driving signal blocking transistor 150 is 'off' through the port P1 of the air conditioner microcomputer 120 and the reference voltage to the constant voltage controller 140 through the port P2. When the air conditioner controller 100 outputs a command value, the reference voltage command value is input, the constant voltage controller 140 outputs a square wave control signal by comparing with the feedback voltage tracking value fed back from the motor, and the square wave control signal is input. The driving voltage amplifier 170 amplifying the driving control signal and supplying the driving control signal to the gate resistors 261 and 262 through the temperature fuse 210, and when the driving control signal is inputted, charges and discharges to the gate input terminal of the MOSFET power device 250. MOSFETs that control the charge to reduce the switching speed, drain current, gate resistors 261 and 262, and turn-on resistance between the drain and source to allow the coil of the blower fan motor 190 to be connected to ground. From the overvoltage protection clamp diodes 131 and 132 and the constant voltage controller 140 that protect the input terminal of the constant voltage controller 140 from surge voltages that may be generated on the feedback voltage loop from the power element 250 and the blower fan motor 190. When the square wave control signal is input, an air conditioner (FATC) 100 including a switching speed up capacitor 160 for charging or discharging the base current to enable high-speed switching of the driving voltage amplifier 170 and the motor lock. The drive circuit for controlling the blower fan motor speed of the vehicle, comprising a mini-fuse 180 for connecting the battery power (B +) and a blower fan motor 190, etc., to prevent the driving device from being ruptured due to a large current. . 방열기의 온도가 최대정격이상으로 과열시 MOSFET전력소자(250) 및 여타의 주변부품을 보호하기 위한 Thermal cutoff기능을 구비하는 온도퓨즈((210)과, 콘넥터 핀이 오삽입될 때 게이트회로를 보호하도록 되어 있는 역극방지다이오드(220), 고속스위칭을 할 때 MOSFET전력소자(250)의 드레인-소스간에 과도전압, 과도전류에 의한 스위칭잡음을 제거하는 서너버콘덴서(230) 및, 정전기 또는 서지전압이 입력될 때 MOSFET전력소자(250)의 게이트 입력전압을 일정전압으로 제한하는 서지흡수소자로 정전기클램프제너다이오드(241,242)를 포함한 MOSFET구동모듈(200)로 구성된 것을 특징으로 하는 차량의 블로어 팬모터 속도 제어용 구동회로.Thermal fuse 210 with thermal cutoff function to protect the MOSFET power device 250 and other peripheral components when the temperature of the radiator is overheated to the maximum rating, and to protect the gate circuit when the connector pin is incorrectly inserted. Reverse polarity preventing diode 220, the surge voltage capacitor 230 to remove the switching noise due to the transient voltage, the transient current between the drain-source of the MOSFET power device 250 during high-speed switching, and static or surge voltage The blower fan motor of the vehicle characterized in that it is composed of the MOSFET drive module 200 including the electrostatic clamp Zener diodes (241,242) as a surge absorbing element to limit the gate input voltage of the MOSFET power device 250 to a predetermined voltage when the input is input Speed control drive circuit.
KR10-2002-0074305A 2002-11-27 2002-11-27 Blower fan motor circuit of vehicle KR100482456B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100625683B1 (en) * 2004-07-06 2006-09-20 우리산업 주식회사 Car-Blower Motor Driving Circuit With Self Protection Function Against Motor Stall
KR101486321B1 (en) * 2008-09-11 2015-01-28 한라비스테온공조 주식회사 A driving apparatus of a blower motor for a vehicle
US9704366B2 (en) 2013-07-16 2017-07-11 Honeywell International Inc. Method to detect an alarm situation and to send silent alerts to external systems using voice input to mobile devices
KR101855711B1 (en) * 2018-02-20 2018-05-08 이춘업 Explosion-proof equipment control device
CN108107932A (en) * 2018-02-28 2018-06-01 巴彦淖尔西部铜业有限公司 A kind of air blower ventilation of constant pressure electric-control system and its electric-control method

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JP3325416B2 (en) * 1995-01-18 2002-09-17 カルソニックカンセイ株式会社 Fan control device
US5909135A (en) * 1996-12-19 1999-06-01 Texas Instruments Incorporated High-side MOSFET gate protection shunt circuit
JPH11227439A (en) * 1998-02-19 1999-08-24 Calsonic Corp Fan motor drive and control vevice for vehicle air conditioning system
JP4192330B2 (en) * 1999-04-07 2008-12-10 株式会社デンソー Semiconductor device
KR100457675B1 (en) * 2002-09-10 2004-11-18 동아전기부품 주식회사 Drive System for controlling speed of blower motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100625683B1 (en) * 2004-07-06 2006-09-20 우리산업 주식회사 Car-Blower Motor Driving Circuit With Self Protection Function Against Motor Stall
KR101486321B1 (en) * 2008-09-11 2015-01-28 한라비스테온공조 주식회사 A driving apparatus of a blower motor for a vehicle
US9704366B2 (en) 2013-07-16 2017-07-11 Honeywell International Inc. Method to detect an alarm situation and to send silent alerts to external systems using voice input to mobile devices
KR101855711B1 (en) * 2018-02-20 2018-05-08 이춘업 Explosion-proof equipment control device
CN108107932A (en) * 2018-02-28 2018-06-01 巴彦淖尔西部铜业有限公司 A kind of air blower ventilation of constant pressure electric-control system and its electric-control method
CN108107932B (en) * 2018-02-28 2023-12-05 巴彦淖尔西部铜业有限公司 Constant-pressure air supply power control system of blower and electric control method thereof

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