CN108599546A - Power supply device with self- recoverage defencive function - Google Patents
Power supply device with self- recoverage defencive function Download PDFInfo
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- CN108599546A CN108599546A CN201810148079.0A CN201810148079A CN108599546A CN 108599546 A CN108599546 A CN 108599546A CN 201810148079 A CN201810148079 A CN 201810148079A CN 108599546 A CN108599546 A CN 108599546A
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- Prior art keywords
- circuit
- power
- self
- recoverage
- electric
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention discloses a kind of power supply device with self- recoverage defencive function, it includes a rectification circuit, one power factor correction circuit, one DC-DC converting circuit, one output circuit, one power-supply controller of electric and a self- recoverage protection location, the self- recoverage protection location is detecting an overload signal, when the overload signal generates, the self- recoverage protection location sends out a shutoff signal to the power-supply controller of electric, the DC-DC converting circuit is closed by the power-supply controller of electric, to stop supplying DC supply, simultaneously, the self- recoverage protection location waits for a reboot time, when the reboot time terminates, a ring off signal is retransmited to the power-supply controller of electric, the power-supply controller of electric is set to drive the DC-DC converting circuit again, to restore to supply DC supply, thereby it is capable of providing the automatic function of restoring protection power source.
Description
Technical field
The present invention relates to a kind of power supply devices, are supplied more particularly, to a kind of power supply with self- recoverage defencive function
Device.
Background technology
With electric equipment products flourish, on the market nearly all electric equipment products be required for use power supply device,
And at present on the market with switch power supply apparatus (Switch Power Supply, SPS) for mainstream, and can be described as switching
Formula power supply device, internal that there is electronic building brick high speed COMS bus exchange switch (Switch) to carry out transformation, main application is most
On communication product, computer and its peripheral equipment.
For specific industry (such as monitoring industry), the stability of power supply device is extremely important, especially monitors
Industry has to the special nature in terms of data storage, and power supply device has to continued operation that can be long-term, but existing
Power supply device in technology is based on single tube normal shock (1Switch Forward) and double tube positive exciting when converting voltage
(2Switch Forward), the safeguard procedures taken are that power supply device is enabled to enter lock-out state, are supplied with protection power source
The electronic building brick (such as IC) in device is answered, but thus, is just difficult to meet the needs of monitoring industry.As TaiWan, China is invented
Patent I 575837 " switched power supply and use its power supply equipment " (case before hereinafter referred to as), mainly
It will be connected between an input terminal and an output end by a power stage circuit, which generates through a current sensor
One current sense value, and one corresponding sensing value, the current monitor are generated according to the current sense value by a current monitor
It is sent to a power-supply controller of electric by a feedback signal is generated through a feedback circuit, by power controller controls power stage electricity
The voltage on road is converted.
By the above-mentioned prior art it is found that having monitoring industry to the particularity in terms of data storage, power supply supply dress
Setting cannot stop operating, but industry takes lock-out state for the electronic building brick IC in protection power source feeding mechanism at present
Mode, such as preceding case one, be also the electronic building brick for wanting in protection power source feeding mechanism, the power-supply controller of electric enabled to enter deadlock shape
State, therefore, for the demand of monitoring industry, the power supply device of the prior art stops operating completely, can not expire really
Foot, therefore need to be proposed the necessity of more preferably solution.
Invention content
In view of above-mentioned the deficiencies in the prior art, the main object of the present invention is to provide a kind of with self- recoverage defencive function
Power supply device, working power is monitored, can not only reduce power supply device internal electrical components burn
The chance ruined more is capable of providing the automatic function of restoring protection power source.
To reach above-mentioned purpose, the technical way taken is that the above-mentioned power supply with self- recoverage defencive function is enabled to supply
The device is answered to include：
One rectification circuit connects an alternating current source；
One power factor correction circuit connects the rectification circuit；
One DC-DC converting circuit connects the power factor correction circuit；
One output circuit connects the DC-DC converting circuit, and supplies DC supply to a load；
One power-supply controller of electric connects and controls the power factor correction circuit, the DC-DC converting circuit；
One self- recoverage protection location connects the power-supply controller of electric, the output circuit, and detects an overload signal；Wherein, when
The overload signal generates, which sends out a shutoff signal to the power-supply controller of electric, is closed by the power-supply controller of electric
The DC-DC converting circuit is closed, to stop supplying DC supply；The self- recoverage protection location waits for a reboot time,
When the reboot time terminates, a ring off signal is retransmited to the power-supply controller of electric, the power-supply controller of electric is made to drive the direct current again
To DC converting circuit, to restore to supply DC supply.
Preferably, which includes that more than one overload circuit for detecting, a switching circuit and one are micro-
Processor；For the wherein overload circuit for detecting to detect the overload signal, which passes through the switching circuit pair
The power-supply controller of electric sends out the shutoff signal, to stop supplying DC supply；Meanwhile the switching circuit sends out a self- recoverage
Enabling signal gives the microprocessor, and timing reboot time by the microprocessor.
Preferably, which includes an overvoltage circuit for detecting, and is detected by the overvoltage circuit for detecting
The overload signal；The overvoltage circuit for detecting includes that Zener diode and one are silicon-controlled, one end connection of the Zener diode
The output circuit, to detect its output voltage, the other end of the Zener diode connects the silicon-controlled gate, this is silicon-controlled
Anode is connected by an optoisolator with the switching circuit；Wherein, when the output voltage of the output circuit be more than a rated voltage,
The Zener diode collapse, the silicon-controlled detecting overload signal and be connected, so that the optoisolator is passed through the switching circuit and distinguish
The shutoff signal, the self- recoverage enabling signal are sent out to the power-supply controller of electric, the microprocessor.
Preferably, which includes an overcurrent detecting circuit, and is detected by the overcurrent detecting circuit
The overload signal；The overcurrent detecting circuit is mainly made of an operational amplifier, and the output end of the operational amplifier passes through
One optoisolator is connected with the switching circuit；Wherein, which is detected by the operational amplifier, the optoisolator is made to pass through
The switching circuit sends out the shutoff signal, the self- recoverage enabling signal to the power-supply controller of electric, the microprocessor respectively.
Preferably, which includes an excess temperature circuit for detecting, and should by excess temperature circuit for detecting detecting
Overload signal；The excess temperature circuit for detecting is mainly made of an operational amplifier and a temperature sensor, which connects
The input terminal of the operational amplifier is connect, the output end of the operational amplifier is connected by an optoisolator with the switching circuit；Its
In, when operating temperature is more than a rated temperature, which is detected by the operational amplifier, the optoisolator is made to pass through this
Switching circuit sends out the shutoff signal, the self- recoverage enabling signal to the power-supply controller of electric, the microprocessor respectively.
Preferably, which connected with the switching circuit by an optoisolator；The switching circuit includes
One first power switch, one second power switch, a third power switch；Wherein, first power switch and the optoisolator,
The power-supply controller of electric connects, which sends out the shutoff signal to the power-supply controller of electric；Second power switch is also
It is connect with the optoisolator, the microprocessor, which sends out the self- recoverage enabling signal to the microprocessor；It should
Third power switch is connect with the microprocessor, which sends out the ring off signal to the electricity by the third power switch
Source controller.
Preferably, this first is made of a metal-oxide half field effect transistor respectively to third power switch.
Preferably, which includes a PFC/PWM controllers, has most foot positions, to connect the power
Factor correction circuit and the DC-DC converting circuit；The rectification circuit includes a full-wave rectifier.
Preferably, which is mainly made of a MCU integrated circuits, has most foot positions, and connect
The switching circuit.
Preferably, which is mainly made of a light emitting diode and a sensor, when the overload signal produces
Raw, which flows through electric current, the sensor is made to sense light, is controlled respectively the power supply by the switching circuit
Device, the microprocessor send out the shutoff signal, the self- recoverage enabling signal.
By above-mentioned construction, power factor correction circuit of the invention, DC-DC converting circuit are connected to the rectification
Between circuit, the output circuit, and direct current is converted by the power controller controls power factor correction circuits 20, the direct current
Circuit, when the self- recoverage protection location detects the overload signal, then being sent out to the power-supply controller of electric according to the overload signal should
Shutoff signal closes the DC-DC converting circuit by the power-supply controller of electric, while suspending and waiting for the reboot time, until
The reboot time terminates, then sends the ring off signal to the power-supply controller of electric by the self- recoverage protection location, and the power supply is made to control
Think highly of and newly drive the DC-DC converting circuit, to restore to supply DC supply, thereby reduces power supply device
The chance that internal electrical components are burnt achievees the purpose that restore protection power source automatically.
Description of the drawings
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein,
Fig. 1 is the circuit diagram of a preferred embodiment of the present invention.
Fig. 2 is the partial circuit diagram of a preferred embodiment of the present invention self- recoverage protection location.
Fig. 3 is another partial circuit diagram of a preferred embodiment of the present invention self- recoverage protection location.
Reference sign：
10 rectification circuit, 20 power factor correction circuit
30 DC-DC converting circuit, 40 output circuit
50 power-supply controller of electric, 60 self- recoverage protection location
61 switching circuit, 62 microprocessor
63 overvoltage circuit for detecting, 64 overcurrent detecting circuit
65 excess temperature circuit for detecting
Specific implementation mode
With the following drawings and preferred embodiments of the present invention, the present invention is further explained to reach predetermined goal of the invention institute
The technological means taken.
About the present invention have self- recoverage defencive function power supply device preferred embodiment, please refer to Fig.1 shown in,
It include a rectification circuit 10, a power factor correction circuit 20, a DC-DC converting circuit 30, an output circuit 40,
One power-supply controller of electric 50 and a self- recoverage protection location 60, in the preferred embodiment, the rectification circuit 10 include that an all-wave is whole
Device BD1 is flowed, an alternating current source (L, N) is connected, the AC power of input is converted to direct current, and in the power supply control
Under the control of device 50 processed, power factor correcting, the DC-DC converting circuit 30 are carried out through the power factor correction circuit 20
Carry out direct current to DC power supply convert after send to the output circuit 40, the output circuit 40 have a DC power output end (+
12VA, RTN2), to connect a load, to supply DC supply.
As shown in Figure 1, 2, which includes more than one overload circuit for detecting, a switching circuit 61
An and microprocessor 62；The overload circuit for detecting is to detect the overload signal, and when the overload signal generates, which protects
Shutoff signal I1 will be sent out by the switching circuit 61 to the power-supply controller of electric 50 by protecting unit 60, and by the power-supply controller of electric 50
The DC-DC converting circuit 30 is closed, to stop supplying DC supply；At the same time, which also sends out
One self- recoverage enabling signal I2 gives the microprocessor 62, and the timing reboot time (such as 10 seconds by the microprocessor 62
Clock), after the microprocessor 62 is to the timing of the reboot time, i.e., a ring off signal V1 is sent out by the microprocessor 62 and given
The power-supply controller of electric 50 makes the power-supply controller of electric 50 drive the DC-DC converting circuit 30 again, to restore to supply direct current
Working power.
As shown in Figure 2,3, in this reality preferably applies example, the overload circuit for detecting of the self- recoverage protection location 60 shares three
It is a, a respectively overvoltage circuit for detecting 63, an overcurrent detecting circuit 64 and an excess temperature circuit for detecting 65；For this field
Technical staff is it is understood that the overvoltage circuit for detecting 63, the overcurrent detecting circuit 64 and the excess temperature circuit for detecting 65
Can individually, combination or be all used in the self- recoverage protection location 60, and respectively by the overvoltage circuit for detecting 63, this is excessively electric
It flows circuit for detecting 64 or the excess temperature circuit for detecting 65 detects the overload signal；Wherein
The overvoltage circuit for detecting 63 includes Zener diode ZD6 and a controllable silicon SCR 1, Zener diode ZD6's
One end connects the output circuit 40, and to detect its output voltage, the other end of Zener diode ZD6 connects the controllable silicon SCR 1
Gate, the anode of the controllable silicon SCR 1 passes through optoisolator a M5A, M5B and the switching circuit 61 connects.In this preferably implementation
In example, the optoisolator M5A, M5B are mainly made of a light emitting diode M5A and a sensor M5B.Wherein, when this is defeated
Go out circuit 40 output voltage be more than a rated voltage (>When 12V), the Zener diode ZD6 of the overvoltage circuit for detecting 63 collapses
It bursts, so that the controllable silicon SCR 1 is detected the overload signal and is connected, and light emitting diode M5A is made to flow through a current signal I, with
It drives light emitting diode M5A to shine, so that sensor M5B is sensed the light of light emitting diode M5A, and pass through the switch
Circuit 61 sends out shutoff signal I1, self- recoverage enabling signal I2 to the power-supply controller of electric 50, the microprocessor 62 respectively, with
Supply DC supply is temporarily ceased, after waiting for timing, i.e., a ring off signal V1 is sent out to the electricity by the microprocessor 62
Source controller 50 makes the power-supply controller of electric 50 drive the DC-DC converting circuit 30 again, to restore to supply DC operation
Power supply.
Furthermore the overcurrent detecting circuit 64 is mainly by an operational amplifier (Operational Amplifier, OPA)
M11B is formed, and in the preferred embodiment, operational amplifier M11B has detecting in-phase input end and inverting input electricity
The characteristic of comparator is pressed, therefore this group of operational amplifier M11B has the function of overcurrent protection；In the preferred embodiment, should
The output end D of operational amplifier M11B connects light emitting diode M5A, and passes through light emitting diode M5A, sensor M5B
It is connected with the switching circuit 61；Wherein, the output end D of operational amplifier M11B is connected to the cathode of light emitting diode M5A,
When the operational amplifier M11B of the overcurrent detecting circuit 64 detects the overload signal, this group of operational amplifier M11B's is defeated
The voltage quasi position of outlet D switchs to LOW by HIGH, and light emitting diode M5A is made to flow through a current signal I, with drive this shine two
Pole pipe M5A shines, and so that sensor M5B is sensed the light of light emitting diode M5A, and right respectively by the switching circuit 61
The power-supply controller of electric 50, the microprocessor 62 send out shutoff signal I1, self- recoverage enabling signal I2, make the direct current to direct current
Conversion circuit 30 temporarily ceases supply DC supply, and after waiting for timing, the power-supply controller of electric 50 is according to the ring off signal
V1 drives the DC-DC converting circuit 30 again, to restore to supply DC supply.
In addition, the excess temperature circuit for detecting 65 is mainly made of operational amplifier M11B and a temperature sensor RT2,
In this preferred embodiment, temperature sensor RT2 includes a thermistor, connects the input terminal of operational amplifier M11B,
Operating temperature raising makes the resistance value of the thermistor increase；Wherein, when operating temperature is more than a rated temperature, excess temperature detecting
The operational amplifier M11B of circuit 65 detects the overload signal, keeps the voltage of the output end D of operational amplifier M11B accurate
Position switchs to LOW by HIGH, so that light emitting diode M5A is flowed through current signal I, to drive the optoisolator M5A, M5B and pass through
The power-supply controller of electric 50 and the microprocessor 62 make DC supply pause power supply, wait for restoring supply again after timing
DC supply.
As shown in Figure 2,3, in the preferred embodiment, which includes one first power switch Q20, one second
Power switch Q22, a third power switch Q21；Wherein, the control terminal of first power switch Q20 and sensor M5B's is defeated
Outlet is electrically connected, and the input, output end of first power switch Q20 is then electrically connected with VCC power supplys, the power-supply controller of electric 50 respectively
It connects, first power switch Q20 is so that the power-supply controller of electric 50 is closed to send out shutoff signal I1 to the power-supply controller of electric 50
The DC-DC converting circuit 30 is closed, to stop supplying DC supply；
The control terminal of second power switch Q22 is also electrically connected with the output end of sensor M5B, second power switch
The input, output end of Q22 is then electrically connected with the microprocessor 62, ground terminal (RTN1) respectively, and second power switch Q22 is
To send out self- recoverage enabling signal I2 to the microprocessor 62, make the microprocessor 62 beginning timing reboot time (example
Such as 10 seconds), when the timing of the microprocessor 62 terminates, that is, ring off signal V1 is sent out to the power-supply controller of electric 50；
The input, output end of third power switch Q21 is then electrically connected with VCC power supplys, ground terminal (RTN1) respectively, should
The control terminal of third power switch Q21 is electrically connected with the microprocessor 62, which passes through third power switch Q21
Ring off signal V1 is sent out to the power-supply controller of electric 50, the power-supply controller of electric 50 is made to drive the DC-DC converting circuit again
30, to release the locked state of the power-supply controller of electric 50, and restore to supply DC supply.
In the preferred embodiment, this first to third power switch Q20, Q22, Q21 can be respectively by an OH
Transistor (MOSFET) is constituted, wherein this first to the input terminal of third power switch Q20, Q22, Q21 be drain (D), defeated
Outlet is source electrode (S), control terminal is gate (G).
In the preferred embodiment, which includes a PFC/PWM controllers (Power Factor
Correction/Pulse Width Modulation Combo Controller), the PWM/PFC controllers are mainly by one
The integrated circuit of model CM6805 is constituted, have most foot positions (PIN1-10), wherein the power-supply controller of electric 50
PIN6 connects the output end of first power switch Q20, PIN8 connection VCC power supplys, PIN9 and connects the power factor correction circuit
20, PIN10 connects the DC-DC converting circuit 30.
In the preferred embodiment, the microprocessor 62 is mainly by a MCU (Microcontroller) integrated circuit institute
It constitutes, which also there is most foot positions (PIN1-8), the PIN6 of the wherein microprocessor 62 to connect the third work(
The control terminal of rate switch Q21, PIN7 connect the input terminal of second power switch Q22.
Illustrate the physical circuit action of this preferred embodiment according to above-mentioned construction, as shown in Figure 1, when sensor M5B conductings
Electric current is flowed through, while making first power switch Q20 conductings, second power switch Q22 conductings；
When first power switch Q20 is connected, the PIN6 of the power-supply controller of electric 50 receives shutoff signal I1, cut-out letter
Number I1 makes the PIN6 input voltages of the power-supply controller of electric 50 switch to high potential (HIGH, VCC power supply), and the power-supply controller of electric 50 stops
The only work of PWM；
When second power switch Q22 is connected, the PIN7 of the microprocessor 62 receives self- recoverage enabling signal I2, should be certainly
Restoring enabling signal I2 makes the PIN7 input voltages of the microprocessor 62 switch to low potential (LOW), and the microprocessor 62
PIN6 controls third power switch Q21 so that and VCC power grounds, the power-supply controller of electric 50 is still in locked state at this time,
And the reboot time (such as 10 seconds), when the reboot time terminates, the microprocessor 62 are waited for by the microprocessor 62
PIN6 input voltages switch to low potential (LOW), and send ring off signal V1 through third power switch Q21 and release the power supply
The locked state of controller 50 makes the power-supply controller of electric 50 restore to control the power factor correction circuit 20, a direct current to straight
Conversion circuit 30 is flowed, self-healing function is reached.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, in the range of not departing from technical solution of the present invention, when the technology contents using the disclosure above make a little change or repair
Decorations are the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, technology according to the present invention is real
Any simple modification, equivalent change and modification made by confrontation above example still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of power supply device with self- recoverage defencive function, which is characterized in that the power supply device includes：
One rectification circuit connects an alternating current source；
One power factor correction circuit connects the rectification circuit；
One DC-DC converting circuit connects the power factor correction circuit；
One output circuit connects the DC-DC converting circuit, and supplies DC supply to a load；
One power-supply controller of electric connects and controls the power factor correction circuit, the DC-DC converting circuit；
One self- recoverage protection location connects the power-supply controller of electric, the output circuit, and detects an overload signal；Wherein, when
The overload signal generates, and the self- recoverage protection location sends out a shutoff signal to the power-supply controller of electric, by the power supply
Controller closes the DC-DC converting circuit, to stop supplying DC supply；Described self- recoverage protection location etc.
It waits for a reboot time, when the reboot time terminates, retransmits a ring off signal to the power-supply controller of electric, make the power supply control
System, which is thought highly of, newly drives the DC-DC converting circuit, to restore to supply DC supply.
2. the power supply device with self- recoverage defencive function as described in claim 1, which is characterized in that the self- recoverage
Protection location includes more than one overload circuit for detecting, a switching circuit and a microprocessor；The wherein described overload detecting
To detect the overload signal, the self- recoverage protection location send the power-supply controller of electric by the switching circuit circuit
Go out the shutoff signal, to stop supplying DC supply；Meanwhile the switching circuit is sent out a self- recoverage enabling signal and is given
The microprocessor, and the reboot time described in timing by the microprocessor.
3. the power supply device with self- recoverage defencive function as claimed in claim 2, which is characterized in that the overload is detectd
Slowdown monitoring circuit includes an overvoltage circuit for detecting, and detects the overload signal by the overvoltage circuit for detecting；It is described excessively electric
It includes that Zener diode and one are silicon-controlled to press circuit for detecting, and one end of the Zener diode connects the output circuit, with
Its output voltage is detected, the other end of the Zener diode connects the silicon-controlled gate, and the silicon-controlled anode is logical
An optoisolator is crossed to connect with the switching circuit；Wherein, when the output voltage of the output circuit is more than a rated voltage, institute
State Zener diode collapse, the silicon-controlled detecting overload signal and be connected, so that the optoisolator is passed through the switch
Circuit sends out the shutoff signal, the self- recoverage enabling signal to the power-supply controller of electric, the microprocessor respectively.
4. the power supply device with self- recoverage defencive function as claimed in claim 2, which is characterized in that the overload is detectd
Slowdown monitoring circuit includes an overcurrent detecting circuit, and detects the overload signal by the overcurrent detecting circuit；It is described excessively electric
Stream circuit for detecting is mainly made of an operational amplifier, and the output end of the operational amplifier passes through an optoisolator and described
Switching circuit connects；Wherein, the overload signal is detected by the operational amplifier, the optoisolator is made to pass through the switch
Circuit sends out the shutoff signal, the self- recoverage enabling signal to the power-supply controller of electric, the microprocessor respectively.
5. the power supply device with self- recoverage defencive function as claimed in claim 2, which is characterized in that the overload is detectd
Slowdown monitoring circuit includes an excess temperature circuit for detecting, and detects the overload signal by the excess temperature circuit for detecting of crossing；The excess temperature is detectd
Slowdown monitoring circuit is mainly made of an operational amplifier and a temperature sensor, and the temperature sensor connects the operational amplifier
Input terminal, the output end of the operational amplifier connected by an optoisolator with the switching circuit；Wherein, when work temperature
Degree detects the overload signal more than a rated temperature by the operational amplifier, and the optoisolator is made to pass through described open
The shutoff signal, the self- recoverage enabling signal are sent out to the power-supply controller of electric, the microprocessor respectively in powered-down road.
6. the power supply device with self- recoverage defencive function as claimed in claim 2, which is characterized in that the overload is detectd
Slowdown monitoring circuit is connected with the switching circuit by an optoisolator；The switching circuit includes one first power switch, one the
Two power switch, a third power switch；Wherein, first power switch and the optoisolator, the power-supply controller of electric
Connection, first power switch send out the shutoff signal to the power-supply controller of electric；Second power switch also with institute
Optoisolator, microprocessor connection are stated, second power switch is sent out the self- recoverage to the microprocessor and started
Signal；The third power switch is connect with the microprocessor, and the microprocessor is sent out by the third power switch
The power-supply controller of electric is given in the ring off signal.
7. as claimed in claim 6 with self- recoverage defencive function power supply device, which is characterized in that described first to
Third power switch is made of a metal-oxide half field effect transistor respectively.
8. the power supply device with self- recoverage defencive function as described in claim 1, which is characterized in that the power supply control
Device processed includes a PFC/PWM controllers, has most foot positions, to connect the power factor correction circuit and the direct current
To DC converting circuit；The rectification circuit includes a full-wave rectifier.
9. the power supply device with self- recoverage defencive function as claimed in claim 2, which is characterized in that the microprocessor
Device is mainly made of a MCU integrated circuits, has most foot positions, and connect the switching circuit.
10. the power supply device with self- recoverage defencive function as described in any one of claim 3 to 7, feature exist
In the optoisolator is mainly made of a light emitting diode and a sensor, when overload signal generation, the hair
Optical diode flows through electric current, and the sensor is made to sense light, by the switching circuit respectively to the power-supply controller of electric,
The microprocessor sends out the shutoff signal, the self- recoverage enabling signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810148079.0A CN108599546A (en) | 2018-02-13 | 2018-02-13 | Power supply device with self- recoverage defencive function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148079.0A CN108599546A (en) | 2018-02-13 | 2018-02-13 | Power supply device with self- recoverage defencive function |
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| CN108599546A true CN108599546A (en) | 2018-09-28 |
Family
ID=63608881
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810148079.0A Pending CN108599546A (en) | 2018-02-13 | 2018-02-13 | Power supply device with self- recoverage defencive function |
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| Country | Link |
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| CN (1) | CN108599546A (en) |
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| CN109687384A (en) * | 2018-12-29 | 2019-04-26 | 苏州路之遥科技股份有限公司 | A kind of high-power excision protection and repositioning method based on calculating reactive power |
| CN110445089A (en) * | 2019-09-02 | 2019-11-12 | 深圳市强军科技有限公司 | Protect circuit and protective device |
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