CN210578272U - Intelligent silicon controlled voltage conversion circuit - Google Patents
Intelligent silicon controlled voltage conversion circuit Download PDFInfo
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- CN210578272U CN210578272U CN201920946802.XU CN201920946802U CN210578272U CN 210578272 U CN210578272 U CN 210578272U CN 201920946802 U CN201920946802 U CN 201920946802U CN 210578272 U CN210578272 U CN 210578272U
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Abstract
The utility model discloses an intelligent silicon controlled rectifier voltage conversion circuit, which comprises a first silicon controlled rectifier, a first alternating current output driving circuit and a main control circuit, wherein one end of the first silicon controlled rectifier is connected with an alternating current input end, and the other end of the first silicon controlled rectifier is connected with a first alternating current output end; the main control circuit is used for controlling the first alternating current output driving circuit to drive the first silicon controlled rectifier to be conducted so as to directly output the input alternating current to output the first alternating current; or, the first alternating current output driving circuit is used for controlling the first controllable silicon to be alternately switched on and switched off, and the input alternating current is output in a voltage reduction mode to output first alternating current; for example, the alternating current with 220V input is converted into the alternating current with 110V after being reduced by the first silicon controlled rectifier; or the input 110V alternating current is directly output through the first controllable silicon to adapt to power supplies such as European standard and American standard. The whole circuit is relatively simple, the manufacturing cost is low, and the output voltage value can be intelligently adjusted.
Description
Technical Field
The utility model relates to a power technical field especially relates to an intelligence silicon controlled rectifier voltage conversion circuit.
Background
The voltage conversion circuit is a part of a circuit for providing power supply for the electric equipment, and mainly comprises an alternating current conversion circuit and a direct current conversion circuit. Because the voltage of the power supply in different regions and different countries may be different, and the rated voltage of the same electric equipment is the same, the electric equipment cannot be directly applied to be connected to the power supplies in different countries, and generally needs to be converted through a voltage conversion device.
The existing ac power conversion device mainly converts the input ac power into dc power, then reduces the dc power, and then converts the reduced dc power into another fixed power voltage, for example, converts the input 220V ac power into 110V ac power after serial conversion, so as to adapt to power supplies such as the european standard and the U.S. standard. For the power conversion device, the whole circuit is relatively complex, the manufacturing cost is high, the output alternating current is a fixed voltage value, and intelligent voltage output cannot be carried out.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the present invention is to provide an intelligent scr voltage converting circuit.
For realize above-mentioned purpose, according to the utility model discloses intelligent silicon controlled rectifier voltage conversion circuit, intelligent silicon controlled rectifier voltage conversion circuit includes:
one end of the first silicon controlled rectifier is connected with the alternating current input end, and the other end of the first silicon controlled rectifier is connected with the first alternating current output end;
the first alternating current output driving circuit is connected with the controlled end of the first controllable silicon;
the main control circuit is connected with the first alternating current output driving circuit and used for controlling the first alternating current output driving circuit to drive the first silicon controlled rectifier to be conducted so as to directly output the input alternating current to output the first alternating current; or, the first alternating current output driving circuit is used for controlling the first controllable silicon to be alternately switched on and switched off, and the input alternating current is output in a voltage reduction mode to output the first alternating current.
Further, according to an embodiment of the present invention, the first ac output driving circuit includes:
the first direct-current output driving circuit is respectively connected with the controlled end of the first silicon controlled rectifier and the main control circuit and is used for driving the first silicon controlled rectifier to be conducted under the control of the main control circuit so as to directly output the input alternating current;
and the first step-down output driving circuit is respectively connected with the controlled end of the first silicon controlled rectifier and the main control circuit, and is used for driving the first silicon controlled rectifier to be alternately switched on and switched off under the control of the main control circuit so as to output the input alternating current step-down.
Further, according to an embodiment of the present invention, the first step-down output driving circuit includes:
a transistor Q11, a base of the transistor Q11 is connected with the master control circuit, and an emitter of the transistor Q11 is connected with a first reference ground;
an optocoupler U5, wherein a diode cathode of the optocoupler U5 is connected with a collector of the triode Q11, a diode anode of the optocoupler U5 is connected with +10V of a first direct-current auxiliary power supply, and a first output end of the optocoupler U5 is connected with one end N of input alternating current;
one end of the resistor R17 is connected with a second output end of the optocoupler U5;
a capacitor C10, one end of the capacitor C10 is connected with the other end of the resistor R17, and the other end of the capacitor C10 is connected with the other end L of the input alternating current;
a trigger diode DB1, one end of the trigger diode DB1 is connected with the one end of the capacitor C10, and the other end of the trigger diode DB1 is connected with a controlled end of the first thyristor.
Further, according to an embodiment of the present invention, the first direct output driving circuit includes:
a transistor Q13, the base of the transistor Q13 is connected with the master control circuit, and the emitter of the transistor Q13 is connected with a first reference ground;
an optocoupler U3, wherein a diode cathode of the optocoupler U3 is connected with a collector of the triode Q13, a diode anode of the optocoupler U3 is connected with +10V of a first DC auxiliary power supply, a triode collector of the optocoupler U3 is connected with +12V of a second DC auxiliary power supply, a triode emitter of the optocoupler U3 is connected with one end of a resistor R57, the other end of the resistor R57 is connected with one end of the resistor R58, and the other end of the resistor R58 is connected with a second reference ground;
a transistor Q14, a base of the transistor Q14 is connected to the one end of the resistor R58, an emitter of the transistor Q14 is connected to the second reference ground, and a collector of the transistor Q14 is connected to the controlled end of the first thyristor through a resistor R17.
Further, according to the utility model discloses an embodiment, intelligent silicon controlled rectifier voltage conversion circuit still includes:
the alternating current-direct current conversion circuit comprises a rectification filter circuit, and the rectification filter circuit is connected with the input alternating current and is used for converting the input alternating current into first high-voltage direct current;
the input voltage detection circuit is respectively connected with the rectification filter circuit and the main control circuit and is used for detecting the voltage of the first high-voltage direct current, and the main control circuit controls the first direct-current output driving circuit to drive the first silicon controlled rectifier to directly output the input alternating current according to the input voltage value; or, the first step-down output driving circuit is controlled to drive the first controllable silicon to step-down and output the input alternating current.
Further, according to the utility model discloses an embodiment, intelligent silicon controlled rectifier voltage conversion circuit still includes:
one end of the second silicon controlled rectifier is connected with the alternating current input end, and the other end of the second silicon controlled rectifier is connected with the second alternating current output end;
and the second alternating current output driving circuit is respectively connected with the controlled end of the second controllable silicon and the main control circuit, and is used for driving the conduction of the second controllable silicon under the control of the main control circuit, and directly outputting the input alternating current so as to output the second alternating current.
Further, according to the utility model discloses an embodiment, intelligent silicon controlled rectifier voltage conversion circuit still includes:
a USB circuit;
the alternating current-direct current conversion circuit further comprises a direct current conversion circuit, and the direct current conversion circuit is respectively connected with the rectification filter circuit and the USB circuit and is used for converting the first high-voltage direct current into a first low-voltage direct current.
Further, according to the utility model discloses an embodiment, intelligence silicon controlled rectifier voltage conversion circuit still includes first overload detection circuit, first overload detection circuit respectively with first silicon controlled rectifier and master control circuit connect.
Further, according to the utility model discloses an embodiment still includes the second and transships detection circuitry, the second transships detection circuitry respectively with second silicon controlled rectifier and master control circuit connect.
Further, according to the utility model discloses an embodiment still includes temperature detection circuit, temperature detection circuit with master control circuit connects.
Further, according to the utility model discloses an embodiment still includes fan control circuit, fan control circuit with master control circuit connects for according to temperature detection value, the slew velocity of control fan.
The embodiment of the utility model provides an intelligent silicon controlled rectifier voltage conversion circuit, through the one end of first silicon controlled rectifier with alternating current input end connection, the other end of first silicon controlled rectifier is connected with first alternating current output end; the first alternating current output driving circuit is connected with the controlled end of the first controllable silicon; the main control circuit is connected with the first alternating current output driving circuit and controls the first alternating current output driving circuit to drive the first silicon controlled rectifier to be conducted so as to directly output the input alternating current and output the first alternating current; or, the first alternating current output driving circuit is controlled to drive the first controllable silicon to be switched on and switched off alternately, and input alternating current is output in a voltage reduction mode to output first alternating current. For example, the alternating current with 220V input is converted into the alternating current with 110V after being reduced by the first silicon controlled rectifier; or the input 110V alternating current is directly output through the first controllable silicon to adapt to power supplies such as European standard and American standard. The whole circuit is relatively simple, the manufacturing cost is low, and the output voltage value can be intelligently adjusted.
Drawings
Fig. 1 is a block diagram of an intelligent silicon controlled voltage conversion circuit provided by an embodiment of the present invention;
fig. 2 is a block diagram of another structure of an intelligent silicon controlled voltage converting circuit provided by an embodiment of the present invention;
fig. 3 is a block diagram of another structure of an intelligent silicon controlled voltage converting circuit provided by an embodiment of the present invention;
fig. 4 is a block diagram of another structure of an intelligent silicon controlled voltage converting circuit provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an ac input circuit, a first thyristor, a first ac output circuit, a first ac output driving circuit, a second thyristor, a second ac output circuit, a second ac output driving circuit, and a second overload detection circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit structure diagram of the main control circuit, the input voltage detection circuit and the over-temperature detection circuit provided in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of an ac-dc conversion circuit provided in an embodiment of the present invention;
fig. 8 is a schematic diagram of an auxiliary power circuit according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a state indicating circuit according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a USB circuit structure according to an embodiment of the present invention.
Reference numerals:
an AC input circuit 10;
a first thyristor 20;
a first ac output circuit 30;
a second thyristor 40;
a second ac output circuit 50;
a first ac output drive circuit 60;
a first step-down output driving circuit 601;
a first pass output driver circuit 602;
a second ac output drive circuit 70;
a main control circuit 80;
an ac-dc conversion circuit 90;
a rectifying-filtering circuit 901;
a direct current conversion circuit 902;
a second overload detection circuit 11;
an input voltage detection circuit 12;
a fan control circuit 13;
a status indication circuit 14;
an auxiliary power supply circuit 15;
a USB circuit 16;
a temperature detection circuit 17;
a first overload detection circuit 18.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, an embodiment of the present invention provides an intelligent silicon controlled rectifier voltage converting circuit, including: the first thyristor 20, the first ac output driving circuit 60 and the main control circuit 80, one end of the first thyristor 20 is connected to an ac input end to access ac, and the ac may be mains supply. For example 220V input ac or 110V input ac. The other end of the first controllable silicon 20 is connected with a first alternating current output end; the output ac power is output-controlled by the first thyristor 20.
The first alternating current output driving circuit 60 is connected with the controlled end of the first controllable silicon 20; the first controlled silicon 20 is driven by the first ac output driving circuit 60 to turn on or off the first controlled silicon 20, so as to control the ac output at the output end of the first controlled silicon 20.
The main control circuit 80 is connected to the first ac output driving circuit 60, and is configured to control the first ac output driving circuit 60 to drive the first thyristor 20 to be turned on, so as to directly output the input ac power to output the first ac power; in some applications, it may be desirable to directly output the input ac power. For example, when the input ac power is 110V, the input 110V ac power needs to be directly output. The main control circuit 80 outputs a control signal, and the control signal drives the first thyristor 20 to be conducted through the first ac output driving circuit 60. At this time, the first thyristor 20 is in a constantly on state, and can directly output the input 110V ac power. That is, at this time, the voltage of the first alternating current is the same as the voltage of the input alternating current, both of which are 110V, and the input alternating current is directly output through the first thyristor 20.
Or, the first ac output driving circuit 60 is controlled to drive the first thyristor 20 to be alternately turned on and off, and step down the input ac power to output the first ac power. In some applications, it may be desirable to step down the input ac power output. For example, when the input ac power is 220V, the input 220V ac power needs to be output in a step-down manner. The main control circuit 80 outputs a control signal, and the control signal drives the first thyristor 20 to be alternately turned on and off through the first ac output driving circuit 60. At this time, the first thyristor 20 is in an on and off alternating state, and can chop the waveform of each cycle of the input 220V ac power. For example, the waveform of each cycle of 220V ac power is cut by half of the output. That is, at this time, the voltage of the first alternating current is half of the voltage of the input alternating current, the voltage of the input alternating current is 220V, and the voltage of the output first alternating current is 110V. The input ac power is output after being stepped down by the first thyristor 20.
The embodiment of the utility model provides an intelligent silicon controlled rectifier voltage conversion circuit, through the one end of first silicon controlled rectifier 20 with alternating current input end connection, the other end of first silicon controlled rectifier 20 with first alternating current output end connection; the first alternating current output driving circuit 60 is connected with the controlled end of the first controllable silicon 20; the main control circuit 80 is connected with the first alternating current output driving circuit 60, and controls the first alternating current output driving circuit 60 to drive the first controllable silicon 20 to be conducted so as to directly output the input alternating current to output the first alternating current; or, the first alternating current output driving circuit 60 is controlled to drive the first controllable silicon 20 to be switched on and off alternately, and the input alternating current is output in a voltage reduction mode to output the first alternating current. For example, the alternating current with 220V input is converted into the alternating current with 110V after being reduced by the first controllable silicon 20; or the input 110V alternating current is directly output through the first controlled silicon 20 to adapt to power supplies such as European standard and American standard. The whole circuit is relatively simple, the manufacturing cost is low, and the output voltage value can be intelligently adjusted.
Referring to fig. 2, the first ac output driving circuit 60 includes: the first direct output driving circuit 602 is connected to the controlled end of the first thyristor 20 and the main control circuit 80, and is configured to drive the first thyristor 20 to be turned on under the control of the main control circuit 80, so as to directly output the input alternating current; the first step-down output driving circuit 601 is respectively connected to the controlled end of the first controlled silicon 20 and the main control circuit 80, and is configured to drive the first controlled silicon 20 to be alternately turned on and off under the control of the main control circuit 80, so as to output an input ac step-down output.
Specifically, in the embodiment of the present invention, the first silicon controlled rectifier 20 is driven to output the first alternating current through the two driving circuits respectively. The first direct-current output driving circuit 602 is configured to drive the first thyristor 20 to directly output the first alternating current; the first step-down output driving circuit is used for driving the first controlled silicon 20 to step down and output the first alternating current. The first through output driving circuit 602 and the first buck output driving circuit 601 can respectively control the through or buck output of the input ac power according to the application, so as to meet the application requirements. For example, when the input ac power is 110V, the first thyristor 20 can be driven by the first through output driving circuit 602 to directly output 110V; when the input ac power is 220V, the first step-down output driving circuit 601 can drive the first thyristor 20 to step down and then output 110V.
Referring to fig. 5, the first step-down output driving circuit 601 includes: the circuit comprises a triode Q11, an optocoupler U5, a resistor R17, a capacitor C10 and a trigger diode DB1, wherein the base electrode of a triode Q11 is connected with a main control circuit 80, and the emitter electrode of a triode Q11 is connected with a first reference ground; the cathode of a diode of the optocoupler U5 is connected with the collector of the triode Q11, the anode of a diode of the optocoupler U5 is connected with +10V of a first direct-current auxiliary power supply, and the first output end of the optocoupler U5 is connected with one end N of input alternating current; one end of the resistor R17 is connected with the second output end of the optocoupler U5; one end of the capacitor C10 is connected with the other end of the resistor R17, and the other end of the capacitor C10 is connected with the other end L of the input alternating current; one end of the trigger diode DB1 is connected to one end of the capacitor C10, and the other end of the trigger diode DB1 is connected to the controlled terminal of the first thyristor 20.
Specifically, the operating principle of the first step-down output driving circuit 601 is as follows: when the first silicon controlled rectifier 20 needs to be controlled to be conducted, the main control circuit 80 outputs a high level through a control signal P1, the triode Q11 is conducted through the high level signal, at the moment, the optocoupler U5 starts to work, the connection end of the optocoupler U5 and the resistor R17 starts to be conducted, the capacitor C10 starts to be charged through the resistor R17, when the capacitor C10 is charged to a certain voltage value within a set charging time, the voltage of the capacitor C10 triggers the trigger diode DB1 to be conducted, after the trigger diode DB1 is conducted, the conduction voltage is loaded to the controlled end of the first silicon controlled rectifier (20) Q8, and the first silicon controlled rectifier (20) Q8 is conducted. By adjusting the resistance value of the resistor R17, the charging time of the capacitor C10 can be adjusted, so that the on-time of the first thyristor 20 in one cycle can be adjusted to perform chopping output on the input alternating current, thereby realizing the step-down output on the input alternating current.
Referring to fig. 5, the first through output driving circuit 602 includes: the circuit comprises a triode Q13, an optocoupler U3 and a triode Q14, wherein the base electrode of the triode Q13 is connected with a main control circuit 80, and the emitting electrode of the triode Q13 is connected with a first reference ground; the diode cathode of the optocoupler U3 is connected with the collector of the triode Q13, the diode anode of the optocoupler U3 is connected with +10V of a first direct-current auxiliary power supply, the collector of the triode of the optocoupler U3 is connected with +12V of a second direct-current auxiliary power supply, the triode emitter of the optocoupler U3 is connected with one end of a resistor R57, the other end of the resistor R57 is connected with one end of a resistor R58, and the other end of the resistor R58 is connected with a second reference ground; the base of the transistor Q14 is connected to one end of the resistor R58, the emitter of the transistor Q14 is connected to the second reference ground, and the collector of the transistor Q14 is connected to the controlled end of the first thyristor 20 through the resistor R17.
Specifically, the operating principle of the first direct output driving circuit 602 is specifically as follows: when the first silicon controlled rectifier 20 needs to be controlled to be conducted, the main control circuit 80 outputs a high level through a control signal P2, the triode Q13 is conducted through the high level signal, at the moment, the optocoupler U3 starts to work, the optocoupler U3 and the connecting ends of the resistor R57 and the resistor R58 start to be conducted, the resistor R57 and the resistor R58 divide the voltage of the second direct-current auxiliary power supply +12V, the divided voltage acts on the base of the triode Q14, the triode Q14 is conducted, after the triode Q14 is conducted, the first silicon controlled rectifier 20 is triggered to be conducted, and after the first silicon controlled rectifier 20 is conducted, the input alternating current is directly output.
Referring to fig. 3, the intelligent thyristor voltage conversion circuit further includes: the ac-dc converter circuit 902 includes a rectifier filter circuit 901, and the rectifier filter circuit 901 is electrically connected to the input ac and is configured to convert the input ac into a first high-voltage dc.
The input voltage detection circuit 12 is respectively connected to the rectifying and filtering circuit 901 and the main control circuit 80, and is configured to perform voltage detection on the first high-voltage direct current, and the main control circuit 80 controls the first direct output driving circuit 602 to drive the first thyristor 20 to directly output the input alternating current according to the input voltage value; or, the first step-down output driving circuit 601 is controlled to drive the first thyristor 20 to step-down and output the input alternating current.
Specifically, the main control circuit 80 obtains the voltage value of the input ac power through the ac/dc conversion circuit 902 and the input voltage detection circuit 12, and controls the first thyristor 20 to directly output the input dc power or step down the input dc power according to the voltage value of the ac power. For example, when the voltage value of the input ac power is 220V, the main control module drives the first thyristor 20 through the first step-down output driving circuit 601 to step down the input ac power for output; when the voltage value of the input alternating current is 110V, the main control module drives the first thyristor 20 through the first through output driving circuit 602 to directly output the input alternating current.
Referring to fig. 7, the rectifier filter circuit 901 includes a rectifier bridge D4 and a filter capacitor CF2, converts an input ac power into a pulsating dc power through the rectifier bridge D4, and converts the pulsating dc power into a stable first high-voltage dc power through the filter capacitor CF 2.
Referring to fig. 6, the input voltage detection circuit 12 includes a resistor R32 and a resistor R38, one end of the resistor R32 is connected to the rectifying and filtering circuit 901 via an HV signal, the other end of the resistor R32 is connected to one end of the resistor R38, the other end of the resistor R38 is connected to a reference ground, and one end of the resistor R38 is also connected to a voltage sampling end of the main control circuit 80 via a resistor R31. The resistor R32 and the resistor R38 divide the first high voltage dc voltage and input the divided voltage to the main control circuit 80. Therefore, voltage detection of the first high-voltage direct current is realized.
Referring to fig. 4, the intelligent thyristor voltage conversion circuit further includes: a second thyristor 40 and a second alternating current output driving circuit 70, wherein one end of the second thyristor 40 is connected with the alternating current input end, and the other end of the second thyristor 40 is connected with the first alternating current output end; the second ac output driving circuit 70 is respectively connected to the controlled end of the second thyristor 40 and the main control circuit 80, and is configured to drive the second thyristor 40 to be turned on under the control of the main control circuit 80, so as to output the input ac power directly to output the second ac power. Specifically, a second alternating current (i.e., a second alternating current) may be output through the second thyristor 40 and the second alternating current output driving circuit 70. By outputting two paths of alternating current, different requirements of users are met. For example, when the input voltage is 220V, two paths of 110V and 220V alternating currents can be output simultaneously; when the input voltage is 110V, two paths of 110V alternating current can be output simultaneously.
In one embodiment of the present invention, the first thyristor 20 and the first ac output port have a maximum overload value of 2000W or less. When the voltage of the input alternating current is within the range of 100V-120V, the input alternating current is directly output through the first silicon controlled rectifier and the first alternating current output circuit; when the voltage value of the input alternating current is in the range of 220-240V, the input alternating current is reduced in voltage through the first silicon controlled rectifier and then is output through the alternating current output circuit, so that the use of an electric appliance with the voltage of 110V and 100V is met.
The second thyristor 40 and the second ac output circuit are direct voltage output, and the maximum overload value is preset below 200W, so as to meet the use of an electrical appliance with low power and wide voltage below 200W. When the first controllable silicon works at the step-down output, the voltage is output in a wave crest shape, and the first controllable silicon may damage some low-power electric appliances which have strict requirements. The input alternating current is directly output through the second silicon controlled rectifier, and the defect that the voltage is a wave crest-shaped output end after the first alternating current is reduced is overcome. And market research shows that the electric appliances below 200W are basically wide-voltage electric appliances, the electric appliances above 200W have more single voltage, and in order to meet market demands, the voltage reduction and direct connection functions are combined on the same product, so that the product has small total volume, is convenient to travel and carry and has lower cost compared with two independent products.
Referring to fig. 5, the second ac output driving circuit 70 includes a transistor Q9 and an optocoupler U1, a base of the transistor Q9 is connected to the main control circuit 80, and an emitter of the transistor Q9 is connected to the first reference ground; the cathode of a diode of the optocoupler U1 is connected with the collector of the triode Q9, the anode of a diode of the optocoupler U1 is connected with +10V of a first direct-current auxiliary power supply, the collector of the triode of the optocoupler U1 is connected with the controlled end of the second controllable silicon 40Q2, and the emitter of the triode of the optocoupler U1 is connected with the second reference ground GNDB.
The working principle of the second ac output driving circuit 70 is specifically as follows: when the second silicon controlled rectifier 40Q2 is controlled to be conducted, the main control circuit 80 outputs a high level through the control signal P3, the triode Q9 is conducted through the high level signal, at the moment, the optocoupler U1 starts to work, the connecting end of the optocoupler U1 and the resistor R14 starts to be conducted, the first silicon controlled rectifier 20 is triggered to be conducted, and after the first silicon controlled rectifier 20 is conducted, the input alternating current is directly output.
Referring to fig. 4, the intelligent thyristor voltage conversion circuit further includes: the USB circuit 16 and the ac-dc conversion circuit 902 further include a dc conversion circuit 902, and the dc conversion circuit 902 is respectively connected to the rectifying and filtering circuit 901 and the USB circuit 16, and is configured to convert the first high-voltage dc into a first low-voltage dc, so as to supply power to the USB circuit 16.
Referring to fig. 10, the USB circuit 16 includes USB interfaces USB1, USB2 and a fast charging integrated circuit U4, the USB interfaces USB1 and USB2 are respectively used for connecting with an external USB device, and the fast charging integrated circuit U4 is used for performing a fast charging protocol communication with the external USB device to perform a fast charging for the external USB device.
Referring to fig. 4, the intelligent silicon controlled rectifier voltage converting circuit further includes a first overload detecting circuit 18, the first overload detecting circuit 18 is respectively connected to the first silicon controlled rectifier 20 and the main control circuit 80, and is configured to detect an output current of the output terminal of the first silicon controlled rectifier 20, and transmit a current value to the main control circuit 80, and when the current value is too large, the first silicon controlled rectifier 20 is controlled to be turned off by the active circuit, so that the overcurrent protection is performed.
Referring to fig. 4, the intelligent silicon controlled rectifier voltage converting circuit further includes a second overload detecting circuit 11, the second overload detecting circuit 11 is respectively connected to the second silicon controlled rectifier 40 and the main control circuit 80, and is configured to detect an output current of an output terminal of the second silicon controlled rectifier 40, and transmit a current value to the main control circuit 80, and when the current value is too large, the second silicon controlled rectifier 40 is controlled to be turned off by the active circuit, so that overcurrent protection is performed.
Referring to fig. 5, the second overload detection circuit 11 includes a resistor R38, one end of the resistor R38 is connected to one end of the second thyristor 40, and the other end of the resistor R38 is connected to one end (N) of the input ac power. One end of the resistor R38 is also connected to the current sampling terminal (I) of the main control circuit 80. The input current is detected by a resistor R38.
Referring to fig. 4, the intelligent scr voltage conversion circuit further includes a temperature detection circuit, and the temperature detection circuit is connected to the main control circuit 80. The temperature detection circuit detects the temperature of the equipment provided with the intelligent silicon controlled voltage conversion circuit, transmits the temperature detection value to the main control circuit 80, and controls the first silicon controlled rectifier 20 and/or the second silicon controlled rectifier 40 to be cut off through the active circuit when the temperature value is overlarge, so that the over-temperature protection is carried out.
Referring to fig. 6, the temperature detection circuit includes a thermistor RT1 and a resistor R35, one end of the thermistor RT1 is connected to +5V of the power supply, the other end of the thermistor RT1 is connected to one end of the resistor R35, the other end of the resistor R35 is connected to the reference ground, and one end of the resistor R35 is further connected to the temperature detection end of the main control circuit 80.
Referring to fig. 4, the scr voltage conversion circuit further includes a fan control circuit 13, and the fan control circuit 13 is connected to the main control circuit 80 and configured to control a rotation speed of the fan according to a temperature detection value. The intelligent silicon controlled voltage conversion circuit equipment is subjected to temperature control, and over-temperature is avoided.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (10)
1. A smart thyristor voltage conversion circuit, comprising:
one end of the first silicon controlled rectifier is connected with the alternating current input end, and the other end of the first silicon controlled rectifier is connected with the first alternating current output end;
the first alternating current output driving circuit is connected with the controlled end of the first controllable silicon;
the main control circuit is connected with the first alternating current output driving circuit and used for controlling the first alternating current output driving circuit to drive the first silicon controlled rectifier to be conducted so as to directly output the input alternating current to output the first alternating current; or, the first alternating current output driving circuit is used for controlling the first controllable silicon to be alternately switched on and switched off, and the input alternating current is output in a voltage reduction mode to output the first alternating current.
2. The scr voltage conversion circuit of claim 1, wherein the first ac output driver circuit comprises:
the first direct-current output driving circuit is respectively connected with the controlled end of the first silicon controlled rectifier and the main control circuit and is used for driving the first silicon controlled rectifier to be conducted under the control of the main control circuit so as to directly output the input alternating current;
and the first step-down output driving circuit is respectively connected with the controlled end of the first silicon controlled rectifier and the main control circuit, and is used for driving the first silicon controlled rectifier to be alternately switched on and switched off under the control of the main control circuit so as to output the input alternating current step-down.
3. The scr voltage conversion circuit of claim 2, wherein the first buck output driver circuit comprises:
a transistor (Q11), a base of the transistor (Q11) is connected with the master control circuit, and an emitter of the transistor (Q11) is connected with a first reference ground;
an optocoupler (U5), wherein a diode cathode of the optocoupler (U5) is connected with a collector of the triode (Q11), a diode anode of the optocoupler (U5) is connected with a first direct current auxiliary power supply, and a first output end of the optocoupler (U5) is connected with one end N of input alternating current;
a resistor (R17), wherein one end of the resistor (R17) is connected with the second output end of the optocoupler (U5);
a capacitor (C10), one end of the capacitor (C10) is connected with the other end of the resistor (R17), and the other end of the capacitor (C10) is connected with the other end of the input alternating current;
a trigger diode (DB1), one end of the trigger diode (DB1) is connected with the one end of the capacitor (C10), and the other end of the trigger diode (DB1) is connected with the controlled end of the first controllable silicon.
4. The scr voltage conversion circuit of claim 2, further comprising:
the alternating current-direct current conversion circuit comprises a rectification filter circuit, and the rectification filter circuit is connected with the input alternating current and is used for converting the input alternating current into first high-voltage direct current;
the input voltage detection circuit is respectively connected with the rectification filter circuit and the main control circuit and is used for detecting the voltage of the first high-voltage direct current, and the main control circuit controls the first direct-current output driving circuit to drive the first silicon controlled rectifier to directly output the input alternating current according to the input voltage value; or, the first step-down output driving circuit is controlled to drive the first controllable silicon to step-down and output the input alternating current.
5. The scr voltage conversion circuit of claim 1, further comprising:
one end of the second silicon controlled rectifier is connected with the alternating current input end, and the other end of the second silicon controlled rectifier is connected with the second alternating current output end;
and the second alternating current output driving circuit is respectively connected with the controlled end of the second controllable silicon and the main control circuit, and is used for driving the conduction of the second controllable silicon under the control of the main control circuit, and directly outputting the input alternating current so as to output the second alternating current.
6. The scr voltage conversion circuit of claim 4, further comprising:
a USB circuit;
the alternating current-direct current conversion circuit further comprises a direct current conversion circuit, and the direct current conversion circuit is respectively connected with the rectification filter circuit and the USB circuit and is used for converting the first high-voltage direct current into a first low-voltage direct current.
7. The SCR voltage conversion circuit of claim 4, further comprising a first overload detection circuit, wherein said first overload detection circuit is connected to said first SCR and said main control circuit, respectively.
8. The SCR voltage conversion circuit of claim 5, further comprising a second overload detection circuit, wherein said second overload detection circuit is connected to said second SCR and said main control circuit, respectively.
9. The scr voltage conversion circuit of claim 1, further comprising a temperature detection circuit connected to the master control circuit.
10. The scr voltage conversion circuit of claim 9, further comprising a fan control circuit connected to the main control circuit for controlling a rotation speed of the fan according to the temperature detection value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920946802.XU CN210578272U (en) | 2019-06-20 | 2019-06-20 | Intelligent silicon controlled voltage conversion circuit |
| PCT/CN2019/107686 WO2020252968A1 (en) | 2019-06-20 | 2019-09-25 | Smart thyristor voltage conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920946802.XU CN210578272U (en) | 2019-06-20 | 2019-06-20 | Intelligent silicon controlled voltage conversion circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210578272U true CN210578272U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224615A (en) * | 2019-06-20 | 2019-09-10 | 广东百事泰电子商务股份有限公司 | Intelligent silicon controlled rectifier voltage conversion circuit |
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2019
- 2019-06-20 CN CN201920946802.XU patent/CN210578272U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224615A (en) * | 2019-06-20 | 2019-09-10 | 广东百事泰电子商务股份有限公司 | Intelligent silicon controlled rectifier voltage conversion circuit |
| CN110224615B (en) * | 2019-06-20 | 2024-08-20 | 广东百事泰医疗器械股份有限公司 | Intelligent silicon controlled voltage conversion circuit |
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