CN1680727A - Controlling circuit of low-voltage high rotating speed rotation with high-voltage activation for DC fan motor - Google Patents

Controlling circuit of low-voltage high rotating speed rotation with high-voltage activation for DC fan motor Download PDF

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Publication number
CN1680727A
CN1680727A CN 200410030670 CN200410030670A CN1680727A CN 1680727 A CN1680727 A CN 1680727A CN 200410030670 CN200410030670 CN 200410030670 CN 200410030670 A CN200410030670 A CN 200410030670A CN 1680727 A CN1680727 A CN 1680727A
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high
voltage
unit
low
output
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CN 200410030670
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Chinese (zh)
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林盟智
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奇鋐科技股份有限公司
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Publication of CN1680727A publication Critical patent/CN1680727A/en

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Abstract

A control circuit for direct current motor to be ignited at high voltage and run in high speed at low voltage comprises an input unit, an output unit, a control unit and a comparison unit. The input unit for power input links to the comparison unit and the control unit. The output unit includes coil group of motor and links to the control unit which controls the running of the motor. The comparison unit links to the control unit and controls the output current from the control unit. With these units, when the motor is ignited at high voltage, it won't be damaged by overload and can keep a high speed running at low voltage.

Description

直流风扇马达高压激活低压高转速运转的控制电路 High voltage DC fan motor control circuit to activate a high speed operation of the low-pressure

技术领域 FIELD

本发明涉及一种直流风扇马达高压激活低压高转速运转的控制电路,特别是一种防止马达控制组件毁损的控制电路。 The present invention relates to a control circuit for a high voltage DC fan motor is activated low pressure, high speed operation, particularly to a control circuit controls the motor assembly to prevent damage.

背景技术 Background technique

信息社会的高速发展,大量的电子资料传播与处理以成为电子产品的必备功能,然而在这功能下随之而来即是伴随着产生高温度的现象,故电子产品需具备散热性能极佳且自身耗电量较小的散热装置来解决散热问题。 The rapid development of the information society, a large number of electronic data communication and processing of electronic products to become a must-have feature, but this feature in the ensuing phenomenon that is accompanied by high temperatures, so the electronic products need to have excellent thermal performance less power consumption and heat sink itself to solve the heat problem.

而目前一般市面上常见的散热装置,是散热风扇及散热器,前者利用热对流的方式来散热,后者则是利用热传导的方式使之散热,但是,散热风扇的热对流所产生的强迫性散热其散热效能较佳,因此为目前各商家所青睐研发。 Common market and general cooling means, a cooling fan and a radiator, the former by thermal convection to heat, so that the latter is conducting manner by heat dissipation, however, the convection heat generated by the cooling fan forced preferably its heat dissipation performance, so currently favored by the business development.

请参阅图1所示为一般习知风扇马达电路,其包含:一马达11,至少包含有一第一线圈绕组111,及第二线圈绕组112;一驱动单元12,连接该马达11,该驱动单元12至少包含有一驱动组件121及一霍尔组件122,其中该霍尔组件122检知该马达11的转子磁极变化,产生正电压H+及负电压H-输出,分别连接驱动组件121对应脚位,该驱动组件121第一输出接脚1211连接该第一线圈绕组111,且该驱动组件121的第二输出接脚1212连接该第二线圈绕组112,以驱动马达11运转作动。 See FIG. 1 shows a conventional general fan motor circuit, comprising: a motor 11, comprising at least a first coil winding 111, and the second coil winding 112; a driving unit 12, connected to the motor 11, the driving unit 12 comprises at least a drive assembly 121 and a Hall-effect elements 122, 122 wherein the Hall-effect elements detecting magnetic pole change of the rotor of the motor 11, a positive voltage H- H + and the negative output voltage, respectively connected to the corresponding pin drive assembly 121, the drive assembly 121 connected to a first output pin 1211 of the first coil winding 111, and the second output drive assembly 121 is connected to the pin 1212 of the second coil winding 112, operation of the motor 11 to drive the actuator.

上述习知电路的问题在于,一般风扇马达电路在设计完成后马达11特性暨以固定,也就是马达11的输入电压与转速会成一正比关系,如图2所示的T1曲线,即例如:当输入电压为12伏特(volt)时,直流风扇马达11的转速为4000转/分(rpm);而当输入电压时为4伏特(volt)时,直流风扇马达11的转速为1000转/分(rpm),在此状态下当所设定的输入电压的转速略显太低,无法有效散热。 Problems of the conventional circuit is that the circuit design of the fan motor is generally complete characteristic cum rear motor 11 in a fixed, that is, the input voltage of the motor 11 and the speed will be a proportional relationship to, Tl curve shown in FIG. 2, i.e. for example: when when the input voltage is 12 V (volt), a DC fan motor speed 11 is 4000 r / min (RPM); when the input voltage of 4 V (volt), a DC fan motor speed 11 of 1000 rev / min ( RPM), in this state when the input voltage of the set speed slightly too low effective heat dissipation.

为使直流风扇马达11在低输入电压时的运转能提高,便从新设计线圈绕组而使直流电压马达11能于输入电压为4伏特(volt)时运转为2300转/分(rpm),然而此时因马达11特性,虽然能在相同低电压时获得较高的转速,但相同的高输入电压却也提升高转速,即12伏特(volt)时转速为8000转/分(rpm)之间(如图2所示的T2曲线),而转速高即电流增大,超过驱动组件121所能负荷电流范围,极易造成烧毁或不良现象产生之虞。 Of the dc fan motor 11 can be improved during the operation when the input voltage is low, the new design begins with the coil windings of the motor 11 can operate the DC voltage of 2300 revolutions / minute (rpm) of the input voltage of 4 V (Volt) When, however, this when Yinma Da characteristic 11, although higher speeds can be obtained at the same low voltage, but the input voltage of the same high lift but also a high speed, i.e. 12 volts (volt) speed 8000 rev / min (rpm) between the ( T2 as shown in curve 2) FIG, i.e. high current increases the rotational speed, the drive assembly 121 exceeds the load current range can easily result in burning or danger arising undesirable phenomenon.

发明内容 SUMMARY

本发明的主要目的是提供一种能在低输出电压时提高风扇转速,以使其具省电又能提升散热效果的直流风扇马达高压激活低压高转速运转的控制电路。 The main object of the present invention is to provide a fan speed can be improved when the output voltage is low, so the power can enhance the cooling effect with a high voltage DC fan motor control circuit to activate the low-pressure high-speed operation.

本发明的另一目的是提供一种能在输出为低电压时提供风扇高速运转,且输出为高电压时其转速能维持在同一高转速,亦即驱动电流能维持在控制组件所预设安全值内,防止风扇因高压激活电流过大,烧毁控制组件造成风扇毁损的控制电路。 Another object of the present invention is to provide an output to provide a low voltage to a high speed fan, and a high output voltage which can be maintained at the same high speed rotational speed, i.e., the drive current can be maintained at the preset safety control assembly the value of the fan due to high pressure to prevent the activation current is too large, burning control means causes the control circuit of the fan damage.

本发明的直流风扇马达高压激活低压高转速运转的控制电路,至少包含一输入单元、一输出单元、一控制单元、一比较单元,其中该输入单元连接比较单元及控制单元,并供输入电源输入,以使控制电路运作;该输出单元包含马达线圈绕组,其连接该控制单元,藉由控制单元控制驱动输出单元运转,该比较单元连接控制单元,控制该控制单元的输出电流,藉由上述各单元的结合,使马达在高压输出激活时,不会因电流太大致使控制组件被烧毁,且于压降至低压输出时亦能维持一高速的运转,以达散热及省电的功效。 DC fan motor according to the present invention is a high pressure activated low voltage control circuit of high speed operation, comprising at least an input unit, an output unit, a control unit, a comparison unit, wherein the input unit connected to the comparison unit and a control unit, and for inputting power input , so that the operation of the control circuit; the output means includes a motor winding, which is connected to the control unit, with the control unit controls the driving operation of the output unit, a control unit connected to the comparison unit, the control unit controls the output current by the respective the combined unit, the motor output is active at high pressures, does not maintain a high speed operation can also result when too much current causes the control component is burned, and the pressure dropped to a low voltage output, and power to achieve the cooling effect.

本发明的上述目的及结构与功能特性,将依据附图以较佳实施例予以说明。 The above object and structural and functional characteristics of the present invention will be described according to the preferred embodiment of FIG.

附图说明 BRIEF DESCRIPTION

图1是传统风扇的电路图;图2是传统风扇马达特性曲线图;图3是本发明较佳实施例的电路方块示意图;图4是本发明较佳实施例的电路示意图;图5是本发明较佳实施例的风扇马达特性曲线示意图。 FIG. 1 is a circuit diagram of a conventional fan; FIG. 2 is a characteristic graph of a conventional fan motor; FIG. 3 is a circuit block schematic diagram of the preferred embodiment of the present invention; FIG. 4 is a circuit schematic diagram of the preferred embodiment of the present invention; FIG. 5 of the present invention is fan motor characteristic curve of the preferred embodiment of FIG.

附图标记说明:11马达;111第一线圈绕组;112第二线圈绕组;12驱动单元;121驱动组件;1211第一输出接脚;1212第二输出接脚;122霍尔组件;21输入单元;211二极管;22比较单元;221比较器;2211正相输入端;2212反相输入端;2213输出端;222电阻器;223稳压组件;224电阻器;225电阻器;226电容器;227电阻器;228稳压组件;23控制单元;231控制组件;232霍尔组件;24输出单元;241第一马达线圈绕组;242第二马达线圈绕组;OUT1第一输出接脚;OUT2第二输出接脚。 REFERENCE NUMERALS: the motor 11; 111 a first coil winding; a second coil winding 112; a drive unit 12; drive assembly 121; a first output pin 1211; a second output pin 1212; Hall assembly 122; an input unit 21 ; diode 211; 22 comparison unit; comparator 221; 2211 positive input terminal; inverting input terminal 2212; 2213 output terminal; a resistor 222; 223 regulator assembly; a resistor 224; a resistor 225; 226 capacitors; resistors 227 ; a regulator assembly 228; 23 a control unit; control means 231; 232 Hall assembly; an output unit 24; a first motor coil winding 241; 242 second motor coil winding; output OUT1 of the first pin; OUT2 of the second output contact foot.

具体实施方式 Detailed ways

请参阅图2所示的本发明较佳实施例的电路方块图,本发明的控制电路至少包括:一输出单元24;一控制单元23,连接该输出单元24,控制该输出单元24驱动;一比较单元22,连接该控制单元23,控制该控制单元23的输出电流;一输入单元21,连接控制单元23及比较单元22,且供输入电源输入。 A circuit block diagram of the preferred embodiment, please refer to FIG. 2 of the present invention, the control circuit of the present invention comprises at least: an output unit 24; a control unit 23, connected to the output unit 24, the control unit 24 to the output drive; a comparing unit 22, connected to the control unit 23, controls the output current of the control unit 23; an input unit 21 connected to the control unit 23 and the comparing unit 22, and the input power supply input.

请再参阅图3、图4所示的本发明较佳实施例的电路图,该输出单元24至少包含有一第一马达线圈绕组241,及一第二马达线圈绕组242;该控制单元23至少包含有一控制组件231及一霍尔组件232,该霍尔组件232检知该输出单元24的转子的磁极变化,产生正电压H+及负电压H-输出,分别连接该控制组件231的对应IN+接脚与IN-接脚,该控制组件231的第一输出接脚OUT1连接上述该第一马达线圈绕组241,及该第二输出接脚OUT2连接上述该第二马达线圈绕组242,藉以控制驱动该输出单元24运转作动。 Please refer to FIG. 3, a circuit diagram of a preferred embodiment of the present invention shown in FIG. 4, the output unit 24 comprises at least a first coil winding motor 241, and a second coil winding motor 242; the control unit 23 comprises at least a control assembly 231 and a Hall-effect elements 232, 232 of the Hall-effect elements detecting poles of the rotor changes the output unit 24 generates a positive voltage and a negative voltage H- H + output, are connected to the control module 231 corresponding to the iN pin and the + IN- pin, the control assembly 231 to the first output OUT1 pin connecting the coil winding of the first motor 241 and the second output OUT2 pin connecting the coil windings of the second motor 242, thereby driving the output of the control unit 24 operated actuator.

所述的比较单元22至少包括有一比较器221(或运算放大器),该比较器221具有一正相输入端2211、一反相输入端2212及一输出端2213,其中该输出端2213连接控制组件231的VTH接脚,且在输出端2213与VTH接脚之间连接有一电阻器222及一稳压组件223,该电阻器222的一端供直流电源输入,另一端连接该输出端2213,该稳压组件223一端接地,另一端连接该输出端2213;该正相输入端2211连接一电阻器224、一电阻器225及一电容器226,其中该电阻器224一端供一直流电源输入,另一端连接正相输入端2211,该电阻器225一端接地,另一端连接正相输入端2211,该电容器226一端接地,另一端连接正相输入端2211;而该反相输入端2212连接一电阻器227及一稳压组件228,其中该电阻器227一端施予直流电源,另一端连接反相输入端2212,该稳压组件228一端接地,另一端接反相输入端2212;即,该比 The comparison unit 22 comprises at least a comparator 221 (or operational amplifier), the comparator 221 has a positive phase input terminal 2211, an inverting input terminal and an output terminal 2212 2213, wherein the output terminal 2213 connected to the control assembly VTH pin 231, and is connected to a resistor 222 and a regulator assembly 223 between the output terminal 2213 and the VTH pin, one end of the resistor 222 supply DC power input, and the other end connected to the output terminal 2213, the steady 223 connected to ground, the other end of the press assembly connected to the output terminal 2213; the positive-phase input terminal 2211 is connected to a resistor 224, a resistor 225 and a capacitor 226, wherein the resistor 224 at one end for DC power input, the other end 2211-inverting input terminal, the resistor 225 has one end grounded and the other end connected to the positive input terminal 2211 connected to ground 226 and the other end connected to the positive input of the capacitor 2211; 2212 and the inverting input terminal is connected to a resistor 227 and a regulator assembly 228, wherein one end of the resistor 227 is administered DC power supply, and the other end connected to the inverting input terminal 2212, the regulator assembly 228 is grounded at one end, the other end of the inverting input terminal 2212; i.e., the ratio 器221的反相输入端2212接受前述电阻器227与稳压组件228所组成的分压信号;且,该上述的稳压组件223、228可为齐纳二极管。 The inverting input terminal 221 accepts 2212 the signal dividing resistor 227 and the voltage regulator composed of component 228; and the above-described voltage regulator device 223,228 may be a Zener diode.

该输入单元21供一输入电源Vcc输入,其包含有一逆压保护二极管211,且连接比较单元22及控制单元23,施予其直流电源。 The input unit 21 for input of an input power source Vcc, which includes a reverse voltage protection diode 211, and is connected to the comparison unit 22 and a control unit 23, which is administered to a DC power supply.

当电源Vcc经由输入单元21输入,经逆压保护二极管211传输至比较单元22及控制单元23,比较器221的正相输入端2211的电阻224及电阻225产生分压信号经电容器226接收该分压信号而充放电,使由正相输入端2211输入的电压信号在一额定值间变动,当正相输入端2211的信号小于反相输入端2212的分压信号,比较器221的输出端2213产生一反相信号,控制组件231的VTH接脚接收反相信号时,控制组件231不会送出驱动信号(即驱动电流)至输出单元24。 When the power supply Vcc 21 input via the input unit, the inverse voltage protection diodes 211 is transmitted to the comparing unit 22 and a control unit 23, the comparator 221 a resistor 224 and the resistor 2211, the positive input terminal 225 generates divided voltage signal of the capacitor 226 receives the sub- discharge pressure signal, so that the positive phase input voltage signal input terminal 2211 is a variation between the nominal value, when the positive phase input signal 2211 is less than the inverting input terminal of the voltage dividing signal 2212, the comparator output of 2,213,221 when generating an inverted signal, control module 231 receives the inverted signal pin VTH, the control assembly 231 will not send a drive signal (i.e., the driving current) to the output unit 24.

当正相输入端2211的输入信号大于反相输入端2212的的分压信号,比较器221的输出端2213产生一正相信号,正相输入端2211的输入信号与反相输入端2212的分压信号的正相差值大,即风扇马达高压激活,该输出正相信号的电压值大,经由输出端2213的电阻器222及稳压组件223分压作用,该稳压组件223稳定该正相信号在固定电压值内,当控制组件231的VTH脚位接收有正相信号时,会输出一驱动信号(即驱动电流)由第一输出接脚OUT1及第二输出接脚OUT2分别输出至第一线圈绕组241及第二线圈绕组242,驱使输出单元24高速转动。 When the input signal a positive input terminal 2211 is greater than the inverting input terminal of the output end 2212 of the partial pressure signal, comparator 221 generates a positive-phase signal 2213, the positive-phase signal input terminal 2211 is input and the inverting input terminal 2212 points a positive phase difference voltage value of the signal is large, i.e., the high-pressure fan motor is activated, the positive-phase output of a large number of voltage values ​​via the output terminal 2213 of voltage division resistors 223 and regulator assembly 222, the regulator assembly 223 to stabilize the positive phase voltage signal within a fixed value, when the control assembly 231 of the pin receiving VTH positive phase signal, outputs a drive signal (i.e., the driving current) second pin OUT1 and OUT2 output from the first output pin to the second output, respectively a coil winding 241 and the second coil winding 242, output unit 24 drives the high-speed rotation.

当正相输入端2211的输入电压信号与反相输入端2212的分压信号的正相差值小,即风扇马达压降至低压转动,该输出正相信号的电压值小,经由电阻器222及稳压组件223分压作用,该稳压组件223稳定该正相信号与前述相同固定电压值,当控制组件231的VTH脚位接收有正相信号时,控制组件231第一输出接脚OUT1及第二输出接脚OUT2分别输出电流至第一马达线圈绕组241及第二马达线圈绕组242,使输出单元24维持相同速度转动。 Dividing the phase difference when a positive input signal of the positive phase input voltage signal 2211 and 2212 to the inverting input of a small value, i.e., rotation of the fan motor pressure dropped to a low pressure, the positive-phase output voltage value of the number of small, through resistor 222 and voltage division regulator assembly 223, the regulator assembly 223 to stabilize the in-phase signal and the same fixed voltage value, when the control assembly 231 of the pin receiving VTH positive phase signal, the control component 231 and the first output pin OUT1 a second output pin OUT2 outputs the current to the coil winding of the first motor 241 and second motor coil windings 242, the output unit 24 to maintain the same rotational speed.

如图4、图5所示,即例如当实施例的风扇马达输出低电压4伏特(volt)转动及风扇马达输出高电压12伏特(volt)激活时,比较单元22产生一相同的固定正相信号至控制组件231的VTH的脚位,使由控制组件231的第一输出脚位OUT1及第二输出脚位OUT2的输出电流在不同的电压值,即高电压和低电压时有相同的输出值,进而输出单元24的转速维持在一相同的转速2300转/分(rpm),改善习知技术在输出低电压高转速值,输出高电压激活造成控制组件负荷过量而产生烧毁现象发生,且具有减少电源浪费及低电压运转时散热效率提升的特性。 4, FIG. 5, i.e., for example, when a fan motor of an embodiment 4 volts output a low voltage (Volt) and a fan motor rotates the output high voltage 12 V (Volt) is activated, a comparing unit 22 generates the same stationary normal phase signal to the control pin assembly VTH 231, 231 so that the control components of the first output pins OUT1 and the output current of the second output OUT2 of the pin in a different voltage value that is output when the same high and low voltages value, and thus the rotation speed output unit 24 is maintained at the same speed a 2300 revolutions / minute (RPM), to improve the conventional art occurs in the output low voltage, high speed value, outputs a high voltage-activated causes control component overloaded generated burning phenomenon, and when the power supply with reduced waste and improve heat dissipation efficiency of the low voltage operation characteristics.

以上所述仅为本发明的较佳可行的实施例,举凡利用本发明上述方法、形状、构造、装置所为的变化,皆应属于本发明的保护范围。 The foregoing is only preferred embodiments of the present invention possible embodiments, the present invention is covered the use of the method described above, the shape, structure, means to change, should all fall within the scope of the present invention.

Claims (10)

1.一种直流风扇马达高压激活低压高转速运转的控制电路,包括:一输出单元;一控制单元,连接输出单元,控制该输出单元驱动;一比较单元,连接控制单元,控制该控制单元的输出电流;一输入单元,连接控制单元及比较单元,并供输入电源输入。 A high voltage DC fan motor control circuit to activate a high speed low voltage operation, comprising: an output unit; a control unit, connected to an output unit, the output control unit drives; a comparison unit, connected to the control unit, the control of the control unit output current; an input unit connected to the control unit and the comparison unit, and the input power supply input.
2.如权利要求1所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,输出单元包含马达线圈绕组。 2. The DC fan motor according to claim 1 activation control circuit of the high-pressure low-voltage high-speed operation, wherein the output unit comprises a motor coil windings.
3.如权利要求1所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,控制单元包含一控制组件及一霍尔组件。 High voltage DC fan motor according to claim 1 activation control circuit of the low-voltage high-speed operation, wherein the control unit comprises a control module and an assembly hall.
4.如权利要求1所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,该比较单元包含一比较器。 4. A high voltage DC fan motor as claimed in claim 1 activation control circuit of the low-voltage high-speed operation, wherein the comparison means comprises a comparator.
5.如权利要求4所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,比较器包含一正向输入端。 5. The DC fan motor as claimed in claim 4, wherein the high voltage control circuit to activate the low-voltage high-speed operation, wherein the comparator comprises a positive input.
6.如权利要求4所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,比较器包含一反向输入端。 6. The DC fan motor as claimed in claim 4, wherein the high voltage control circuit to activate the low-voltage high-speed operation, wherein the comparator comprises an inverting input terminal.
7.如权利要求6所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,比较器的反向输入端连接至少一稳压组件。 7. The DC fan motor according to claim 6, wherein the control circuit activates the low-pressure high-voltage high-speed operation, wherein the inverting input terminal of the comparator is connected to at least one voltage regulator device.
8.如权利要求4所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,该比较器有一输出端。 High voltage DC fan motor as claimed in claim 4, said control circuit activates a high speed operation of the low pressure, wherein the comparator has an output terminal.
9.如权利要求8所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,该比较器的输出端连接至少一稳压组件。 High voltage DC fan motor according to claim 8, said control circuit activates a high speed operation of the low pressure, wherein the output terminal of the comparator is connected to at least one voltage regulator device.
10.如权利要求7或9所述的直流风扇马达高压激活低压高转速运转的控制电路,其中,该稳压组件为齐纳二极管。 High voltage DC fan motor according to claim 7 or 9 activation control low-voltage high-speed operation of the circuit, wherein the regulator assembly is a Zener diode.
CN 200410030670 2004-04-05 2004-04-05 Controlling circuit of low-voltage high rotating speed rotation with high-voltage activation for DC fan motor CN1680727A (en)

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