CN207559868U - Failure safe power supply - Google Patents
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- CN207559868U CN207559868U CN201721455338.1U CN201721455338U CN207559868U CN 207559868 U CN207559868 U CN 207559868U CN 201721455338 U CN201721455338 U CN 201721455338U CN 207559868 U CN207559868 U CN 207559868U
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Abstract
The utility model discloses a kind of failure safe power supplys, the failure safe power supply includes the first power supply generation module, the first voltage changing module, first switch power control circuit, direct current 24V power modules, direct current 5V power modules and at least constant flow high pressure circuit, every constant flow high pressure circuit described all the way include safety control circuit, the second voltage changing module, second switch power control circuit and constant flow high pressure power module all the way.Failure safe power supply provided by the utility model, under the conditions of direct current 24V power supplys, direct current 5V power supplys normal work and input logic dynamic square wave, just there are 700V High voltage outputs, so as to improve the safety of half wave track circuit, and high voltage power supply output is using constant current design method, ensure constant-current charge during to half wave track circuit capacitor charging, effectively avoid impact of the half wave track circuit equipment to electric power system.
Description
Technical field
The utility model is related to railway signal control technical fields, and in particular to a kind of failure safe power supply.
Background technology
Must have direct current 24V power supplys, direct current 5V power supplys, 700V high voltage power supplies, current master in half wave track circuit equipment
It is that AC220V input powers are powered using step-down transformer or individually to want application mode, generates direct current 24V power supplys and 5V power supplys, leads to
It crosses after AC220V input power step-up transformers and is converted into 700V high voltage power supplies, and this mode is asked there are safety is not high
Topic.
Utility model content
The purpose of this utility model is to provide a kind of failure safe power supplys, can improve the safety of half wave track circuit
Property.
To achieve the above object, the technical solution of the utility model provides a kind of failure safe power supply, including the first electricity
Source generation module, the first voltage changing module, first switch power control circuit, direct current 24V power modules, direct current 5V power modules
And at least constant flow high pressure circuit all the way, include per constant flow high pressure circuit described all the way safety control circuit, the second voltage changing module,
Second switch power control circuit and constant flow high pressure power module；
The first power supply generation module is used to be converted to 220V alternating currents after 310V direct currents to first transformation
Module, the first switch power control circuit, second voltage changing module power supply；
First voltage changing module is connected with the first switch power control circuit, and first voltage changing module is used for
The 310V direct currents that the first power supply generation module exports are converted under the control of the first switch power control circuit
24V direct currents and 5V direct currents；
The direct current 24V power modules, the direct current 5V power modules are connected with first voltage changing module, the direct current
24V power modules are used to after the 24V direct currents that first voltage changing module exports are filtered export, the direct current 5V
Power module is used to after the 5V direct currents that first voltage changing module exports are filtered export；
The safety control circuit and the direct current 24V power modules, the direct current 5V power modules, the second switch
Power control circuit is connected, and the safety control circuit is used for when direct current 24V power modules output 24V direct currents and described
Direct current 5V power modules export 5V direct currents and are controlled when receiving preset logic dynamic square wave to the second switch power supply
Circuit output 12V DC electricity；
The second switch power control circuit is connected with second voltage changing module, the second switch power supply control electricity
Road is used to control second voltage changing module by described first in the 12V DC electricity for receiving the safety control circuit output
The 310V direct currents of power supply generation module output are converted to 700V direct currents；
The 700V direct currents that the constant flow high pressure power module is used to export second voltage changing module are filtered place
Reason, and exported in a manner of constant current.
Further, the first power supply generation module includes common mode differential mode suppression circuit and presses down with the common mode differential mode
The first rectification module that circuit output end processed is connected.
Further, the safety control circuit includes the first driver, the first transformer, the second rectification module, high frequency
Pulse module, driving coupling module, the second driver, the second transformer and third rectification module；
The first end of the first transformer primary side connects the output terminal of the direct current 5V power modules, and described first becomes
The second end of depressor primary side connects the output terminal of first driver, and first driver is used for according to described preset
Logic dynamic square wave controls first transformer, and the frequency of the preset logic dynamic square wave is 1KHz~5KHz；
The input terminal of second rectification module is connected with the secondary side of first transformer, second rectification module
For carrying out rectification to the secondary side signal of first transformer；
The input terminal of the high-frequency impulse module is connected with the output terminal of second rectification module, the high-frequency impulse mould
Block is used to generate high frequency dynamic square wave according to the output of second rectification module, and the frequency of the high frequency dynamic square wave is
80KHz~100KHz；
The driving coupling module and the output terminal of the high-frequency impulse module, the output terminal of the direct current 5V power modules
It is connected, the driving coupling module is used for when direct current 5V power modules output 5V direct currents and the high-frequency impulse module
The pulse signal of forward bias is exported when exporting the high frequency dynamic square wave；
The input terminal of second driver is connected with the output terminal of the driving coupling module, second transformer one
The first end of secondary side connects the output terminal of the direct current 24V power modules, the second end connection of the second transformer primary side
The output terminal of second driver, second driver are used for according to the pulse signal of forward bias control described the
Two transformers；
The input terminal of the third rectification module is connected with the secondary side of second transformer, the third rectification module
For carrying out rectification to the secondary side signal of second transformer, to generate the 12V DC electricity.
Further, the driving coupling module is connected by optical coupling module with the output terminal of the high-frequency impulse module.
Further, first driver include the first capacitance, first resistor, second resistance, the first diode and
First triode；
One end of first capacitance connects the first end of the first resistor, the second end connection institute of the first resistor
State the base stage of the cathode of the first diode, the first end of the second resistance, first triode；
The anode of first diode, the second end of the second resistance, first triode emitter ground connection；
The collector of first triode connects the second end of the first transformer primary side；
Second rectification module include the first rectifier, the second capacitance, the first inductance, third capacitance, the second diode,
3rd resistor；
Wherein, the first input end of first rectifier connects the first end of first Circuit Fault on Secondary Transformer, described
Second input terminal of the first rectifier connects the second end of first Circuit Fault on Secondary Transformer；
The first end of the first output terminal connection second capacitance of first rectifier, the first of first inductance
End；
The first end of the second end connection third capacitance of first inductance, the cathode of second diode, institute
State the first end of 3rd resistor, the high-frequency impulse module；
The second output terminal of first rectifier, the second end of second capacitance, the second end of the third capacitance,
The anode of second diode, the second end ground connection of the 3rd resistor.
Further, the high-frequency impulse module includes phase inverter, the 4th capacitance, the 4th resistance and the 5th resistance；
Wherein, the input terminal of the phase inverter connects first end, the first end of the 4th capacitance of the 4th resistance,
The output terminal of the phase inverter connects second end, the first end of the 5th resistance of the 4th resistance, the phase inverter
The second end of power end connection first inductance, one end of the optical coupling module primary side；
The other end of the second end connection optical coupling module primary side of 5th resistance, the second of the 4th capacitance
End ground connection.
Further, the driving coupling module includes third transformer, the 5th capacitance, third diode；
One end of the third transformer primary side connects the output terminal of the direct current 5V power modules, the third transformation
The other end of device primary side connects one end of the optical coupling module secondary side, and the other end of the optical coupling module secondary side is grounded,
One end of the third Circuit Fault on Secondary Transformer connects the first end of the 5th capacitance, the third Circuit Fault on Secondary Transformer it is another
The anode of end connection third diode, the cathode of the third diode connect the second end of the 5th capacitance.
Further, second driver include the 6th resistance, the 7th resistance, power field effect pipe, the 4th diode,
6th capacitance, the 8th resistance；
The first end of 6th resistance connects the second end of the 5th capacitance, the second end connection of the 6th resistance
The first end of the grid of the power field effect pipe, the 7th resistance, second end, the power field effect of the 7th resistance
Should pipe source electrode ground connection；
The drain electrode of the power field effect pipe connects the anode of the 4th diode, the second transformer primary side
Second end, the cathode of the 4th diode connect first end, the first end of the 8th resistance of the 6th capacitance；
The second end of 6th capacitance connect the second end of the 8th resistance, the direct current 24V power modules it is defeated
The first end of outlet, the second transformer primary side；
The third rectification module includes the 5th diode, the 7th capacitance；
The anode of 5th diode connects the first end of second Circuit Fault on Secondary Transformer, the 5th diode
Cathode connects the first end of the 7th capacitance, and the second end of the 7th capacitance connects the of second Circuit Fault on Secondary Transformer
Two ends.
Further, the second switch power control circuit includes pulse width modulation circuit, voltage feedback circuit, electricity
Current feedback circuit and the third driver for driving second voltage changing module；
The voltage feedback circuit is used to detect the secondary side voltage of second voltage changing module；
The current feedback circuit is used to detect the primary side current of second voltage changing module；
The pulse width modulation circuit is used for the two of second voltage changing module detected when the voltage feedback circuit
Secondary side voltage is more than the primary side current of second voltage changing module that voltage preset value or the current feedback circuit detect
The output of second voltage changing module is closed during more than electric current preset value by the third driver.
Further, the failure safe power supply includes constant flow high pressure circuit described in multichannel.
Failure safe power supply provided by the utility model, when direct current 24V power supplys, direct current 5V power supplys normal work and input are patrolled
Under the conditions of collecting dynamic square wave, just there are 700V High voltage outputs, so as to improve the safety of half wave track circuit, and high voltage power supply
Output is using constant current design method, it is ensured that constant-current charge during to half wave track circuit capacitor charging effectively avoids pulse rail
Impact of the road circuit arrangement to electric power system.
Description of the drawings
Fig. 1 is a kind of schematic diagram for failure safe power supply that the utility model embodiment provides；
Fig. 2 is a kind of schematic diagram for safety control circuit that the utility model embodiment provides；
Fig. 3 is the schematic diagram for another safety control circuit that the utility model embodiment provides；
Fig. 4 is the signal of second switch power control circuit and the second voltage changing module that the utility model embodiment provides
Figure.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but be not intended to limit the scope of the present invention.
Referring to Fig. 1, Fig. 1 be the utility model embodiment provide a kind of failure safe power supply schematic diagram, the failure
Safety power supply includes the first power supply generation module 10, the first voltage changing module 20, first switch power control circuit 30, direct current 24V
Power module 40, direct current 5V power modules 50 and at least constant flow high pressure circuit all the way, per constant flow high pressure circuit packet described all the way
Include safety control circuit 60, the second voltage changing module 70, second switch power control circuit 80 and constant flow high pressure power module 90；
The first power supply generation module 10 is used to after 220V alternating currents are converted to 310V direct currents become to described first
Die block 20, the first switch power control circuit 30, second voltage changing module 70 are powered；
First voltage changing module 20 is connected with the first switch power control circuit 30, first voltage changing module 20
It is straight for the 310V that exports the first power supply generation module 10 under the control of the first switch power control circuit 30
Galvanic electricity is converted to 24V direct currents and 5V direct currents；
The direct current 24V power modules 40, the direct current 5V power modules 50 are connected with first voltage changing module 20, institute
It is rear defeated for the 24V direct currents that first voltage changing module 20 exports to be filtered to state direct current 24V power modules 40
Go out, the direct current 5V power modules 50 are rear defeated for the 5V direct currents that first voltage changing module 20 exports to be filtered
Go out, pass through the first voltage changing module 20, first switch power control circuit 30, direct current 24V power modules 40, direct current 5V power modules
The 50 generation direct current 24V power supplys of two-way independent isolating and direct current 5V power supplys, the power supply both can be the track circuit equipment of application
Power supply, while power for safety control circuit；
The safety control circuit 60 and the direct current 24V power modules 40, the direct current 5V power modules 50, described the
Two switching power source control circuits 80 are connected, and the safety control circuit 60 is used to export when the direct current 24V power modules 40
To described when 24V direct currents and the direct current 5V power modules 50 export 5V direct currents and receive preset logic dynamic square wave
Second switch power control circuit 80 exports 12V DC electricity, i.e., safety control circuit is only when direct current 24V power modules and direct current 5V
Power module works normally, and when receiving preset logic dynamic square wave (such as 1KHz~5KHz frequency signals), security control
Circuit just exports the power supply of direct current 12V, powers for second switch power control circuit；
The second switch power control circuit 80 is connected with second voltage changing module 70, the second switch power supply control
Circuit 80 processed is used to control second voltage changing module 70 will in the 12V DC electricity for receiving the safety control circuit output
The 310V direct currents that the first power supply generation module 10 exports are converted to 700V direct currents, when second switch power supply controls electricity
When road 80 there are 12V power supplies, the output of constant flow high pressure 700V power supplys could be generated；
The 700V direct currents that the constant flow high pressure power module 90 is used to export second voltage changing module 70 are filtered
Wave processing, and exported in a manner of constant current, so as to be half wave track circuit equipment charge capacitor charging.
Wherein, the first power supply generation module 10 includes common mode differential mode suppression circuit 11 and presses down with the common mode differential mode
The first rectification module 12 that 10 output terminal of circuit processed is connected, AC220 power-frequency voltages are through common mode differential mode suppression circuit and the first rectification
After module, the DC power supply of stable about 310V is formed, the power supply for whole system to powering.
Wherein, the common mode differential mode suppression circuit 11 can include common mode inductance, differential mode inductance and differential mode capacitor, pass through
The common mode differential mode suppression circuit that common mode inductance, differential mode inductance and differential mode capacitor network are formed can realize that AC220V input and output are double
To interference prevention, first rectification module 12 include rectifier bridge and filter capacitor, by by rectifier bridge and filter capacitor structure
Into the first rectification module can be by AC220V power rectifiers into 310V direct currents.
The failure safe power supply that the utility model embodiment provides, when direct current 24V power supplys, the normal work of direct current 5V power supplys
Make and under the conditions of input logic dynamic square wave, just there are 700V High voltage outputs, so as to improve the safety of half wave track circuit,
And high voltage power supply output is using constant current design method, it is ensured that constant-current charge during to half wave track circuit capacitor charging is effectively kept away
Impact of the half wave track circuit equipment to electric power system is exempted from.
Wherein, first switch power control circuit is powered from the first power supply generation module, can be wide by using pulse
The first voltage changing module of degree modulation and feedback controling mode driving and control, may be used prior art realization, such as first opens
Powered-down source control circuit can include pulse width modulation circuit, voltage feedback circuit and corresponding driver, the first transformation
Module can be transformer, and secondary side can be the coil of two groups of independence, so as to generate direct current 24V electricity and 5V electricity respectively.
Safety control circuit obtains driving voltage and logic voltage from direct current 24V power modules and direct current 5V power modules,
When the logic dynamic square wave for receiving 1KHz~5KHz, the stable direct current 12V voltages of safety control circuit output are opened for second
Powered-down source control circuit power supply.After second switch power control circuit is powered, driving and the second voltage changing module of control generate height
Voltage source；
Referring to Fig. 2, the safety control circuit include the first driver 61, the first transformer T1, the second rectification module 62,
High-frequency impulse module 63, driving coupling module 64, the second driver 65, the second transformer T2 and third rectification module 66；
The output terminal of the first end connection direct current 5V power modules of the first transformer T1 primary sides, described first
The second end of transformer T1 primary sides connects the output terminal of first driver 61, and first driver 61 is used for according to institute
State preset logic dynamic square wave and control the first transformer T1, the frequency of the preset logic dynamic square wave for 1KHz~
5KHz；
The input terminal of second rectification module 62 is connected with the secondary side of the first transformer T1, second rectification
Module 62 is used to carry out rectification to the secondary side signal of the first transformer T1；
The input terminal of the high-frequency impulse module 63 is connected with the output terminal of second rectification module 62, the high frequency arteries and veins
Die block 63 is used to generate high frequency dynamic square wave, the frequency of the high frequency dynamic square wave according to the output of second rectification module 62
Rate is 80KHz~100KHz；
The output terminal of driving coupling module 64 and the high-frequency impulse module 63, the direct current 5V power modules
Output terminal is connected, and the driving coupling module is used for when direct current 5V power modules output 5V direct currents and the high-frequency impulse
Module 63 exports the pulse signal of forward bias when exporting the high frequency dynamic square wave；
The input terminal of second driver 65 is connected with the output terminal of the driving coupling module 64, second transformation
The first end of device primary side connects the output terminal of the direct current 24V power modules, the second end of the second transformer primary side
The output terminal of second driver 65 is connected, second driver 65 is used for the pulse signal control according to the forward bias
Make the second transformer T2；
The input terminal of the third rectification module 66 is connected with the secondary side of the second transformer T2, the third rectification
Module 66 is used to carry out rectification to the secondary side signal of second transformer, to generate the 12V DC electricity.
When the first driver receives preset logic dynamic square wave (such as frequency is 1KHz~5KHz), the first driving
Device driving the first transformer T1, the first transformer T1 coupling energy forms power supply to secondary side and after the second rectification module rectification
The square wave of VCC1, VCC1 driving high-frequency impulse module generation 80KHz~100KHz, isolation of the square wave through driving coupling module
After control the second driver, the second driver and then control the second transformer T2, the second transformer T2 no-load voltage ratios are 2:1 and by direct current
24V power modules are powered, and direct current 12V power supplys are generated by energy coupled to secondary side and after third rectification module, are opened for second
Powered-down source control circuit power supply.When the first driver receives signal as high level or low level, the first transformer T1 is incompetent
Amount is coupled to secondary side, and the input power VCC1 of high-frequency impulse module is zero, and the square wave of no 80KHz~100KHz is exported, into
And no direct current 12V is caused to export, which meets railway signals equipment failure to safety principle.
Preferably, in the utility model embodiment, it is described driving coupling module can by optical coupling module with it is described
The output terminal of high-frequency impulse module is connected.
Referring to Fig. 3, first driver includes the first capacitance C1, first resistor R1, second resistance R2, the first diode
D1 and the first triode Q1；
One end of the first capacitance C1 connects the first end of the first resistor R1, the second end of the first resistor R1
The base stage of the cathode of the first diode D1, the first end of the second resistance R2, the first triode Q1 are connected, it is described
The other end of first capacitance C1 is used to receive the preset logic dynamic square wave；
The transmitting of the anode of the first diode D1, the second end of the second resistance R2, the first triode Q1
Pole is grounded GND；
The collector of the first triode Q1 connects the second end of the first transformer T1 primary sides；
Logic dynamic square-wave signal drives Q1, D1 to be used for clamper negative pressure after C1 and R1 current limlitings；
Second rectification module includes the first rectifier D2, the second capacitance C2, the first inductance L1, third capacitance C3, the
Two diode D3,3rd resistor R3；
Wherein, the first input end of the first rectifier D2 connects the first end of the first transformer T1 secondary sides,
The second input terminal of the first rectifier D2 connects the second end of the first transformer T1 secondary sides；
The first output terminal of the first rectifier D2 connects the first end of the second capacitance C2, the first inductance L1
First end；
The second end of the first inductance L1 connect the first end of the third capacitance C3, the second diode D3 it is negative
Pole, the first end of the 3rd resistor R3, the high-frequency impulse module；
The second output terminal of the first rectifier D2, the second end of the second capacitance C2, the third capacitance C3
Second end, the anode of the second diode D3, the 3rd resistor R3 second end ground connection GND1.
D3 is clamping diode, and the output of T1 filters after D2 rectifications, then by pin network, forms DC power signal
VCC1；
The high-frequency impulse module includes phase inverter U1, the 4th capacitance C4, the 4th resistance R4 and the 5th resistance R5；
Wherein, the input terminal of the phase inverter U1 connects the first end of the 4th resistance R4, the 4th capacitance C4
First end, the output terminal of the phase inverter connect second end, the first end of the 5th resistance R5 of the 4th resistance R4, institute
State the second end of power end connection the first inductance L1 of phase inverter U1, one end of the optical coupling module O1 primary sides；
The second end of the 5th resistance R5 connects the other end of the optical coupling module O1 primary sides, the 4th capacitance C4
Second end ground connection GND1.
Wherein, C4, R4 form high frequency oscillation circuit, optical coupling module O1 primary sides output high frequency arteries and veins together with phase inverter U1
Punching.
The driving coupling module includes third transformer T3, the 5th capacitance C5, third diode D4；
One end of the third transformer T3 primary sides connects the output terminal of the direct current 5V power modules, and the third becomes
The other ends of depressor T3 primary sides connects one end of the optical coupling module O1 secondary sides, the optical coupling module O1 secondary sides it is another
End ground connection, one end of the third transformer T3 secondary sides connect the first end of the 5th capacitance C5, the third transformer
The anode of the other end connection third diode D4 of T3 secondary sides, the cathode of the third diode D4 connect the 5th capacitance
The second end of C5；
Optical coupling module O1 secondary sides drive T3 primary sides, T3 secondary sides output dynamic pulse, through C5 and D4 direct current biasings
Afterwards, the second driver is driven.
Second driver include the 6th resistance R6, the 7th resistance R7, power field effect pipe Q2, the 4th diode D5,
6th capacitance C6, the 8th resistance R8；
The second end of first end connection the 5th capacitance C5 of the 6th resistance R6, the second of the 6th resistance R6
The grid of the end connection power field effect pipe Q2, the first end of the 7th resistance R7, the second of the 7th resistance R7
End, the source electrode ground connection GND24 of the power field effect pipe Q2；
The drain electrode of the power field effect pipe Q2 connects anode, the second transformer T2 mono- of the 4th diode D5
The second end of secondary side, the cathode of the 4th diode D5 connect the first end of the 6th capacitance C6, the 8th resistance R8
First end；
The second end of the 6th capacitance C6 connects the second end of the 8th resistance R8, the direct current 24V power modules
Output terminal, the second transformer primary side first end；
The third rectification module includes the 5th diode D6, the 7th capacitance C7；
The anode of the 5th diode D6 connects the first end of the second transformer T2 secondary sides, the five or two pole
The cathode of pipe D6 connects the first end of the 7th capacitance C7, and the second end of the 7th capacitance C7 connects second transformer
The second end of T2 secondary sides.
The waveform of T2 secondary sides output exports 12V DC voltage after D6 and C7 shapings.
Preferably, to prevent impact of the high voltage power supply to electric power system, electricity may be used in second switch power control circuit
The type of drive that stream feedback and Voltage Feedback are combined；
Preferably, to prevent the voltage stress of high voltage power supply to the impact of element, the second voltage changing module outlet side is using more
The cascade way of output of grade.
Referring to Fig. 4, the second switch power control circuit includes pulse width modulation circuit 81, voltage feedback circuit
82nd, current feedback circuit 83 and the third driver 84 for driving second voltage changing module；
The voltage feedback circuit is used to detect the secondary side voltage of second voltage changing module；
The current feedback circuit is used to detect the primary side current of second voltage changing module；
The pulse width modulation circuit is used for the two of second voltage changing module detected when the voltage feedback circuit
Secondary side voltage is more than the primary side current of second voltage changing module that voltage preset value or the current feedback circuit detect
The output of second voltage changing module is closed during more than electric current preset value by the third driver, for example, when the second transformation
When the secondary side voltage of module is more than 700V, pulse width modulation circuit closes the output signal of third driver, and then closes
The output of second voltage changing module, current feedback circuit are sealed in the circuit of the second voltage changing module, primary when the second voltage changing module
When side electric current is more than electric current preset value, pulse width modulation circuit closes the output signal of third driver, and then closes second
The output of voltage changing module；
Wherein, as shown in figure 4, the second voltage changing module outlet side is independently exported using three-level, including the 4th transformer T4,
First rectification circuit, the second rectification circuit and third rectification circuit, the first rectification circuit, the second rectification circuit and third rectified current
700V high voltage power supplies are formed after each self-rectifying in road and series connection.
Preferably, in the utility model, the failure safe power supply can include constant flow high pressure circuit described in multichannel.
Preferably, integral structure may be used in the failure safe power supply in the utility model, so as to advantageously reduce electricity
Volume source.
The utility model not only conforms to track circuit failure security doctrine, and designs simple, energy transmission efficiency height, integrates
Degree is high, can be applied in the track circuit equipment of railway pulse standard, for half wave track circuit provide high-voltage charging constant-current supply,
24V power supplys and logic 5V power supplys.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the spirit of the present invention, belonging to the utility model will
Seek the range of protection.
Claims (10)
1. a kind of failure safe power supply, which is characterized in that including the first power supply generation module, the first voltage changing module, first switch
Power control circuit, direct current 24V power modules, direct current 5V power modules and at least constant flow high pressure circuit all the way, per institute all the way
It states constant flow high pressure circuit and includes safety control circuit, the second voltage changing module, second switch power control circuit and constant flow high pressure
Power module；
The first power supply generation module be used for by 220V alternating currents be converted to after 310V direct currents to first voltage changing module,
The first switch power control circuit, second voltage changing module power supply；
First voltage changing module is connected with the first switch power control circuit, and first voltage changing module is used for described
To be converted to 24V straight for the 310V direct currents for exporting the first power supply generation module under the control of first switch power control circuit
Galvanic electricity and 5V direct currents；
The direct current 24V power modules, the direct current 5V power modules are connected with first voltage changing module, the direct current 24V
Power module is used to after the 24V direct currents that first voltage changing module exports are filtered export, the direct current 5V electricity
Source module is used to after the 5V direct currents that first voltage changing module exports are filtered export；
The safety control circuit and the direct current 24V power modules, the direct current 5V power modules, the second switch power supply
Control circuit is connected, and the safety control circuit is used for when direct current 24V power modules output 24V direct currents and the direct current
To the second switch power control circuit when 5V power modules export 5V direct currents and receive preset logic dynamic square wave
Export 12V DC electricity；
The second switch power control circuit is connected with second voltage changing module, and the second switch power control circuit is used
Second voltage changing module is controlled by first power supply when 12V DC electricity that the safety control circuit exports is being received
The 310V direct currents of generation module output are converted to 700V direct currents；
The 700V direct currents that the constant flow high pressure power module is used to export second voltage changing module are filtered, and
It is exported in a manner of constant current.
2. failure safe power supply according to claim 1, which is characterized in that the first power supply generation module includes common mode
Differential mode suppression circuit and the first rectification module being connected with the common mode differential mode suppression circuit output terminal.
3. failure safe power supply according to claim 1, which is characterized in that the safety control circuit includes the first driving
Device, the first transformer, the second rectification module, high-frequency impulse module, driving coupling module, the second driver, the second transformer with
And third rectification module；
The first end of the first transformer primary side connects the output terminal of the direct current 5V power modules, first transformer
The second end of primary side connects the output terminal of first driver, and first driver is used for according to the preset logic
Dynamic square wave controls first transformer, and the frequency of the preset logic dynamic square wave is 1KHz~5KHz；
The input terminal of second rectification module is connected with the secondary side of first transformer, and second rectification module is used for
Rectification is carried out to the secondary side signal of first transformer；
The input terminal of the high-frequency impulse module is connected with the output terminal of second rectification module, and the high-frequency impulse module is used
In generating high frequency dynamic square wave according to the output of second rectification module, the frequency of the high frequency dynamic square wave for 80KHz~
100KHz；
The driving coupling module and the output terminal of the high-frequency impulse module, the output terminal phase of the direct current 5V power modules
Even, the driving coupling module is used for when direct current 5V power modules output 5V direct currents and the high-frequency impulse module exports
The pulse signal of forward bias is exported during the high frequency dynamic square wave；
The input terminal of second driver is connected with the output terminal of the driving coupling module, the second transformer primary side
First end connect the output terminals of the direct current 24V power modules, described in the second end connection of the second transformer primary side
The output terminal of second driver, second driver are used to be become according to the pulse signal of forward bias control described second
Depressor；
The input terminal of the third rectification module is connected with the secondary side of second transformer, and the third rectification module is used for
Rectification is carried out to the secondary side signal of second transformer, to generate the 12V DC electricity.
4. failure safe power supply according to claim 3, which is characterized in that the driving coupling module passes through optical coupling module
It is connected with the output terminal of the high-frequency impulse module.
5. failure safe power supply according to claim 4, which is characterized in that first driver include the first capacitance,
First resistor, second resistance, the first diode and the first triode；
One end of first capacitance connects the first end of the first resistor, the second end connection of the first resistor described the
The cathode of one diode, the first end of the second resistance, the base stage of first triode；
The anode of first diode, the second end of the second resistance, first triode emitter ground connection；
The collector of first triode connects the second end of the first transformer primary side；
Second rectification module includes the first rectifier, the second capacitance, the first inductance, third capacitance, the second diode, third
Resistance；
Wherein, the first end of first input end connection first Circuit Fault on Secondary Transformer of first rectifier, described first
Second input terminal of rectifier connects the second end of first Circuit Fault on Secondary Transformer；
First output terminal of first rectifier connects first end, the first end of first inductance of second capacitance；
The second end of first inductance connects the first end of the third capacitance, the cathode of second diode, described the
The first end of three resistance, the high-frequency impulse module；
It is the second output terminal of first rectifier, the second end of second capacitance, the second end of the third capacitance, described
The second end ground connection of the anode of second diode, the 3rd resistor.
6. failure safe power supply according to claim 5, which is characterized in that the high-frequency impulse module include phase inverter,
4th capacitance, the 4th resistance and the 5th resistance；
Wherein, the input terminal of the phase inverter connects first end, the first end of the 4th capacitance of the 4th resistance, described
The output terminal of phase inverter connects second end, the first end of the 5th resistance of the 4th resistance, the power supply of the phase inverter
The second end of end connection first inductance, one end of the optical coupling module primary side；
The second end of 5th resistance connects the other end of the optical coupling module primary side, the second termination of the 4th capacitance
Ground.
7. failure safe power supply according to claim 6, which is characterized in that the driving coupling module includes third transformation
Device, the 5th capacitance, third diode；
One end of the third transformer primary side connects the output terminal of the direct current 5V power modules, the third transformer one
The other end of secondary side connects one end of the optical coupling module secondary side, and the other end ground connection of the optical coupling module secondary side is described
One end of third Circuit Fault on Secondary Transformer connects the first end of the 5th capacitance, and the other end of the third Circuit Fault on Secondary Transformer connects
The anode of third diode is connect, the cathode of the third diode connects the second end of the 5th capacitance.
8. failure safe power supply according to claim 7, which is characterized in that second driver include the 6th resistance,
7th resistance, power field effect pipe, the 4th diode, the 6th capacitance, the 8th resistance；
The first end of 6th resistance connects the second end of the 5th capacitance, described in the second end connection of the 6th resistance
The first end of the grid of power field effect pipe, the 7th resistance, the second end of the 7th resistance, the power field effect pipe
Source electrode ground connection；
The anode of drain electrode connection the 4th diode of the power field effect pipe, the second of the second transformer primary side
End, the cathode of the 4th diode connect first end, the first end of the 8th resistance of the 6th capacitance；
The second end of 6th capacitance connect the second end of the 8th resistance, the direct current 24V power modules output terminal,
The first end of the second transformer primary side；
The third rectification module includes the 5th diode, the 7th capacitance；
The anode of 5th diode connects the first end of second Circuit Fault on Secondary Transformer, the cathode of the 5th diode
The first end of the 7th capacitance is connected, the second end of the 7th capacitance connects the second of second Circuit Fault on Secondary Transformer
End.
9. failure safe power supply according to claim 1, which is characterized in that the second switch power control circuit includes
Pulse width modulation circuit, voltage feedback circuit, current feedback circuit and the third for driving second voltage changing module
Driver；
The voltage feedback circuit is used to detect the secondary side voltage of second voltage changing module；
The current feedback circuit is used to detect the primary side current of second voltage changing module；
The pulse width modulation circuit is used for when the secondary side of second voltage changing module of voltage feedback circuit detection
Voltage is more than the primary side current of second voltage changing module that voltage preset value or the current feedback circuit detect and is more than
The output of second voltage changing module is closed during electric current preset value by the third driver.
10. failure safe power supply according to claim 1, which is characterized in that the failure safe power supply includes multichannel institute
State constant flow high pressure circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721455338.1U CN207559868U (en) | 2017-11-03 | 2017-11-03 | Failure safe power supply |
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| CN201721455338.1U CN207559868U (en) | 2017-11-03 | 2017-11-03 | Failure safe power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612368A (en) * | 2017-11-03 | 2018-01-19 | 北京聚智达科技有限公司 | Failure safe power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612368A (en) * | 2017-11-03 | 2018-01-19 | 北京聚智达科技有限公司 | Failure safe power supply |
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