CN106059296B - Band multiple protective applied to rail vehicle can double-voltage electric power module in parallel - Google Patents
Band multiple protective applied to rail vehicle can double-voltage electric power module in parallel Download PDFInfo
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- CN106059296B CN106059296B CN201610403613.9A CN201610403613A CN106059296B CN 106059296 B CN106059296 B CN 106059296B CN 201610403613 A CN201610403613 A CN 201610403613A CN 106059296 B CN106059296 B CN 106059296B
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- 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
- H02H3/20—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 responsive to excess voltage
- H02H3/207—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 responsive to excess voltage also responsive to under-voltage
Abstract
It can double-voltage electric power module in parallel the present invention relates to a kind of band multiple protective applied to rail vehicle, the power module includes two-way power supply unit, every road power supply unit includes EMC protection conditioning circuit, over under-voltage protection circuit, temperature protection circuit, it can twin voltage conversion circuit in parallel, parallel output isolation circuit and filter regulator circuit, every road power supply unit can twin voltage conversion circuit in parallel be equipped with two groups of voltage conversion chips, two groups of voltage conversion chip compatible front-ends protect circuit, two groups of voltage conversion chips are equipped with mode switch pin, disconnect the mode switch pin of the corresponding voltage conversion chip of two-way power supply unit, two-way power supply unit is with hot standby mode parallel output；Connect the mode switch pin of the corresponding voltage conversion chip of two-way power supply unit, two-way power supply unit parallel output in a manner of flowing.The power module is conveniently applicable in different occasions, reduces cost, shortens the development cycle.
Description
Technical field
The present invention relates to a kind of power modules, specifically, be related to it is a kind of applied to rail vehicle band multiple protective can
Double-voltage electric power module in parallel.
Background technique
Currently, the power module of rail vehicle mostly uses single supply module or single supply Redundancy power supply, and to electricity
Source module provides basic safeguard measure.The shortcomings that above two power module is：1) once there is power failure in single supply module,
The loss that will cause partially or completely function of supplying power increases the driving risk of rail vehicle.2) single supply Redundancy power supply
It generallys use diode and does and be isolated, the disadvantage is that power consumption is big, voltage loss is big and heat dissipation area is big, need multiple voltage in load
When, it needs to add new power, increases power supply cost and occupied space.
As China Patent No. CN102064683B discloses a kind of input of Width funtion, pressure stabilizing output type power module, including protect
Protection circuit, voltage conversion circuit and voltage-stabilizing output circuit, protection circuit are connect by filter circuit with voltage conversion circuit, are protected
Circuit includes current foldback circuit and EMC protection circuitry, by current foldback circuit, when input voltage being made overcurrent or short circuit occur
Device is unlikely to be damaged in circuit；By EMC circuit protection, noise in input voltage and ripple are reduced, anti-interference ability
By force.Above-mentioned power module conversion circuit is protected using EMC and overcurrent protection, and the prime as power module protects circuit, voltage
DC110V Width funtion is converted to the narrow voltage of DC5V pressure stabilizing by conversion circuit, i.e., it is single supply supplier of electricity that the power module, which uses,
Formula, there are aforesaid drawbacks for single supply power supply mode.
Summary of the invention
The object of the present invention is to provide a kind of band multiple protective applied to rail vehicle can double-voltage electric power module in parallel,
Overvoltage/undervoltage and temperature protection are carried out to power supply using front-end protection circuit, realize the output of mono-/bis-voltage form or mono-/bis-voltage simultaneously
Connection output.
The technical scheme is that：A kind of band multiple protective applied to rail vehicle can double-voltage electric power mould in parallel
Block, the power module include two-way power supply unit, and every road power supply unit includes EMC protection conditioning circuit, overvoltage/undervoltage protection electricity
Road, temperature protection circuit, can in parallel twin voltage conversion circuit, parallel output isolation circuit and filter regulator circuit, EMC protection adjusts
Circuit output end connection over under-voltage protection circuit and temperature protection circuit are managed, three constitutes front-end protection circuit, overvoltage/undervoltage protection
After circuit and temperature protection circuit are in parallel successively with can twin voltage conversion circuit, parallel output isolation circuit and filtering voltage regulation in parallel
Circuit connection；Every road power supply unit can twin voltage conversion circuit in parallel be equipped with two groups of voltage conversion chips, two groups of electricity
Conversion chip compatible front-end is pressed to protect circuit, two groups of voltage conversion chips are equipped with mode switch pin, disconnect two-way power supply list
The mode switch pin of first corresponding voltage conversion chip, two-way power supply unit are exported in hot standby mode；Connect two-way power supply
The mode switch pin of the corresponding voltage conversion chip of unit, two-way power supply unit are exported in a manner of parallel current-sharing.
Preferably, the EMC protection conditioning circuit includes conditioning circuit input terminal X1, varistor RV3, protective tube
F1, filter capacitor C3, common mode inductance L1, capacitance group C4, TVS diode, counnter attack diode D6, conditioning circuit input terminal X1 is successively
Connect varistor RV3, protective tube F1, filter capacitor C3, common mode inductance L1, capacitance group C4, TVS diode and counnter attack diode
D6, conditioning circuit input terminal X1 connection 110V DC power supply, varistor RV3 and filter capacitor C3 with 110V DC power supply simultaneously
Connection；Protective tube F1 is series between varistor RV3 and filter capacitor C3；TVS diode includes the first TVS diode D4 and the
Two TVS diode D5, the first TVS diode D4 anode are connected with the second TVS diode D5 anode, the first TVS diode D4
Cathode connects counnter attack diode D6, and the output of counnter attack diode D6 cathode is conditioning circuit 110VA direct current.
Preferably, the over under-voltage protection circuit includes bleeder circuit, comparator circuit, metal-oxide-semiconductor switching circuit and event
Hinder indicating circuit, bleeder circuit input terminal connection+110VA direct current, bleeder circuit output end connects comparator circuit, comparator
Circuit output end connects metal-oxide-semiconductor switching circuit and failure indicating circuit.
Preferably, the temperature protection circuit and over under-voltage protection circuit share a set of metal-oxide-semiconductor switching circuit, and temperature is protected
Protection circuit is equipped with temperature acquisition chip U5 and temperature fault indicator light D26, temperature acquisition chip U5 be equipped with temperature threshold setting end,
First output end TH and second output terminal TL, temperature threshold set end and connect temperature setting resistor, the first output end TH and second
Output end TL is connected to MOS switch pipe Q1 grid G.
Preferably, the parallel output isolation circuit includes high_voltage isolation output circuit U2 and low pressure spacing output circuit
U1, high_voltage isolation output circuit U2 support 9~80V voltage input, and low pressure spacing output circuit U1 supports 0~18V voltage input.
The high_voltage isolation output circuit U2 adds metal-oxide-semiconductor driving circuit mode using metal-oxide-semiconductor, and metal-oxide-semiconductor driving circuit output end connects MOS
Tube grid G, metal-oxide-semiconductor source S connection+24V direct current, metal-oxide-semiconductor drain D output+24VA direct current.Low pressure spacing output circuit U1
It is identical as the way of output of the high_voltage isolation output circuit U2.
Preferably, the filter regulator circuit includes π type filter circuit and voltage-stabiliser tube, and π type filter circuit input terminal connects
+ 24VA direct current is connect, π type filter circuit output end exports 24V1+ direct current after voltage-stabiliser tube pressure stabilizing and uses for load.
The present invention having the beneficial effect that compared with prior art：
1) power module has multiple protective circuit, including front-end protection circuit and post processing electric circuit, passes through front end
Circuit is protected to carry out electromagnetic compatibility protection, overvoltage/undervoltage protection and temperature protection to power module；By post processing electric circuit, to electricity
Source module carries out isolation and steady pressure treatment, and effective protection power module increases Product Safety；
2) configuration flexibly, the power module by can twin voltage conversion circuit in parallel realize the output of mono-/bis-voltage form or
The output of mono-/bis-voltage parallel, output mode are chosen as warm back-up/ flow, are conveniently applicable in different occasions, reduce cost, shortening is opened
Send out the period；
3) way of output can effectively reduce power consumption, heat dissipation and voltage loss using isolation output in parallel, and electric current transmission is smooth
Dead-beat can rapidly switch off if power module breaks down or short circuit, reduce reverse current impact, improve product reliability；
4) have fault diagnosis functions, by external indication lamp display temperature, overvoltage/undervoltage failure, improve maintenance convenience；
5) can twin voltage conversion circuit in parallel twin voltage conversion circuit, compatible front-end protects circuit, can effectively save member
Device saves space and reduces cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of power module of the present invention；
Fig. 2 is the schematic diagram of front-end protection circuit；
Fig. 3 is that EMC protects conditioning circuit schematic diagram；
Fig. 4 is over under-voltage protection circuit schematic diagram；
Fig. 5 is temperature protection circuit schematic diagram；
Fig. 6 is that mono-/bis-voltage form exports schematic diagram；
Fig. 7 is that mono-/bis-voltage parallel exports schematic diagram；
Fig. 8 is high_voltage isolation output circuit schematic diagram；
Fig. 9 is low pressure spacing output circuit schematic diagram；
Figure 10 is filter regulator circuit schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
Embodiment 1
Referring to Fig. 1, the present invention disclose a kind of band multiple protective applied to rail vehicle can double-voltage electric power module in parallel,
The power module includes two-way power supply unit, every road power supply unit include EMC protection conditioning circuit, over under-voltage protection circuit,
Temperature protection circuit, can in parallel twin voltage conversion circuit, parallel output isolation circuit and filter regulator circuit, two-way power supply unit
It can independently export, it also can be by can twin voltage conversion circuit parallel output in parallel.
Referring to figs. 2 and 3, it includes conditioning circuit input terminal X1, varistor RV3, protective tube that EMC, which protects conditioning circuit,
F1, filter capacitor C3, common mode inductance L1, capacitance group C4, TVS diode, counnter attack diode D6, conditioning circuit input terminal X1 is successively
Connect varistor RV3, protective tube F1, filter capacitor C3, common mode inductance L1, capacitance group C4, TVS diode and counnter attack diode
D6.Wherein, conditioning circuit input terminal X1 connection 110V DC power supply, varistor RV3 and filter capacitor C3 with 110V direct current
Power sources in parallel；Protective tube F1 is series between varistor RV3 and filter capacitor C3；Filter capacitor C3, common mode inductance L1, capacitor
Group C4 constitutes the LC filter of conditioning circuit；TVS diode includes the first TVS diode D4 and the second TVS diode D5, and first
TVS diode D4 anode is connected with the second TVS diode D5 anode, and the first TVS diode D4 cathode connects counnter attack diode
D6, counnter attack diode D6 can effectively prevent the damage after power supply line reversal connection to subsequent conditioning circuit, export through counnter attack diode D6 cathode
For conditioning circuit 110VA direct current.EMC protection conditioning circuit can effectively prevent surge, impulse train and space radiation interference, improve
Input voltage noise and ripple afterwards is effectively suppressed.
EMC protects conditioning circuit output end to connect over under-voltage protection circuit, referring to fig. 2 and Fig. 4, over under-voltage protection circuit packet
Bleeder circuit, comparator circuit, metal-oxide-semiconductor switching circuit and failure indicating circuit are included, bleeder circuit input terminal connection+110VA is straight
Galvanic electricity, bleeder circuit output end connect comparator circuit, and comparator circuit output end connects metal-oxide-semiconductor switching circuit and indicating fault
Circuit controls output -110VB direct current by metal-oxide-semiconductor switching circuit, indicates to owe over-voltage fault by failure indicating circuit.
Over under-voltage protection circuit is specially：
Bleeder circuit includes the first divider resistance R31 and the second divider resistance R33, comparator circuit include first comparator
U4A and the second comparator U4B, metal-oxide-semiconductor switching circuit use MOS switch pipe Q1, and failure indicating circuit includes under-voltage indicator light D18
With over-voltage indicator light D20.First divider resistance R31 input terminal connection+110VA direct current, the first divider resistance R31 output end connect
Connect first comparator U4A non-inverting input terminal, the second divider resistance R33, the second comparator U4B inverting input terminal, the second partial pressure electricity
Hinder R33 other end connection -110VA direct current.First comparator U4A inverting input terminal and the second comparator U4B non-inverting input terminal
Connect reference voltage V1；The output end of first comparator U4A and the second comparator U4B connect the output of tri- tunnel Bing Fen：The output of 1 tunnel connects
Meet the under-voltage indicator light D18 and over-voltage indicator light D20 of failure indicating circuit；1 tunnel is exported through first resistor R27 connection high level
V2；1 tunnel output connection MOS switch pipe Q1 grid G.MOS switch pipe Q1 source S connection -110VA direct current；MOS switch pipe Q1's
Drain D connection -110VB direct current.
The course of work of above-mentioned over under-voltage protection circuit is：
After the bleeder circuit partial pressure that+110VA direct current is formed through the first divider resistance R31 and the second divider resistance R33, with
The reference voltage V1 of comparator circuit is compared, and has following three kinds of results：1) when virtual voltage is in minimum threshold and maximum threshold
When between value, first comparator U4A and the second comparator U4B export high level, and MOS switch pipe Q1 is connected in high level V2,
MOS switch pipe Q1 output -110VB direct current；2) when virtual voltage is lower than minimum threshold, first comparator U4A exports low electricity
Flat, the second comparator U4B exports high level, and high level V2 power consumption is turned off in first resistor R27, MOS switch pipe Q1, under-voltage
Indicator light D18 is lighted；3) when virtual voltage is higher than max-thresholds, first comparator U4A exports high level, the second comparator
U4B exports low level, and high level V2 power consumption is turned off in first resistor R27, MOS switch pipe Q1, over-voltage indicator light D20 point
It is bright.Wherein, the max-thresholds in the above-mentioned course of work and minimum threshold are by reference voltage V1 and the electricity connecting with reference voltage V1
Resistance value is hindered to determine.By over under-voltage protection circuit, protection power source voltage is not subject to the voltge surge more than working range, is more than electricity
Pressure range then cuts off circuit and prompts failure by external indicator light.
EMC protects conditioning circuit output end to connect temperature protection circuit, referring to fig. 2 and Fig. 5, temperature protection circuit and excessively deficient
Voltage protection circuit shares a set of metal-oxide-semiconductor switching circuit, i.e. temperature protection circuit output end connects MOS switch pipe Q1 grid G.Temperature
It protects circuit to be equipped with temperature acquisition chip U5 and temperature fault indicator light D26, temperature acquisition chip U5 to set equipped with temperature threshold
End, the first output end TH and second output terminal TL, wherein temperature threshold sets end and connects temperature setting resistor, temperature setting electricity
Resistance includes second resistance R47,3rd resistor R48, the 4th resistance R49 and the 5th resistance R50, sets temperature by temperature setting resistor
Threshold value is spent, temperature threshold includes minimum temperature threshold and maximum temperature threshold, and will test actual temperature and temperature threshold progress
Compare, comparison result is as follows：
1) when measured temperature is between minimum temperature threshold and maximum temperature threshold, the first output end TH and
Two output end TL export high level, and MOS switch pipe Q1 is connected in high level V2, MOS switch pipe Q1 output -110VB direct current；
2) when measured temperature is lower than minimum temperature threshold, second output terminal TL exports low level, and the first output end TH output is high
Level, high level V2 power consumption are turned off in first resistor R27, MOS switch pipe Q1, and temperature fault indicator light D26 is lighted；3) when
When measured temperature is higher than maximum temperature threshold, second output terminal TL exports high level, and the first output end TH exports low level,
High level V2 power consumption is turned off in first resistor R27, MOS switch pipe Q1, and temperature fault indicator light D26 is lighted.Temperature protection
Circuit protection power module works in normal temperature range, prevents overheating from causing the irreversible damage of power supply, once hair
Raw temperature fault cuts off circuit and prompts failure by external indicator light.
After over under-voltage protection circuit and temperature protection circuit are in parallel with can parallel connection twin voltage conversion circuit input terminal connect,
EMC protection conditioning circuit, over under-voltage protection circuit, temperature protection circuit collectively constitute the front-end protection circuit of the power module.
Can twin voltage conversion circuit in parallel be equipped with two groups of voltage conversion chips, two groups of voltage conversion chip compatible front-ends protect circuits.Two
Group voltage conversion chip input terminal is all connected with+110VA direct current and -110VB direct current ,+110VA direct current and -110VB direct current
Electricity output+24V direct current and+5V direct current respectively after twin voltage conversion circuit.
Referring to Fig. 1 and Fig. 6, two-way power supply unit can be exported independently in Fig. 1, and two-way power supply unit is wherein optional all the way
Power supply unit, Fig. 6 be only select power supply unit all the way can the structure composition of twin voltage conversion circuit in parallel can be in parallel in Fig. 6
Twin voltage conversion circuit configures two groups of voltage conversion chips, and respectively first voltage conversion chip PS1 and second voltage convert core
The output of univoltage standard can be achieved if only configuring one group of voltage conversion chip in piece PS2；If two groups of voltage conversions of configuration
The output of twin voltage standard then can be achieved in chip.It is mutually isolated between two-way voltage conversion chip when dual output, anti-interference energy
Power is strong, high conversion efficiency, and every road voltage conversion circuit can carry out ± 10% output adjusting.In each voltage conversion chip
It is in parallel with positive voltage by Adj pin equipped with Adj pin, it is possible to increase voltage conversion chip output voltage；By Adj pin with
Ground is in parallel, can reduce voltage conversion chip output voltage.It configures convenient, flexible, can effectively save component, save space and drop
Low cost.
Referring to Fig. 1 and Fig. 7, in Fig. 1 two-way power supply unit by can twin voltage conversion circuit parallel output in parallel, if electric
Source unit only configures one group of voltage conversion chip, then single supply parallel output can be achieved；If power supply unit configures two groups of voltages
Twin voltage parallel output then can be achieved in conversion chip.In Fig. 7, by taking second voltage conversion chip as an example, first via power supply unit
The second voltage conversion chip PS2 ' of second voltage conversion chip PS2 and No. second power supply unit is equipped with mode switch pin
ModeSwitch, by controlling two conversion chip mode switch pin Mode Switch on-off, control two-way power supply unit
Can twin voltage conversion circuit in parallel parallel output.When the mode switch pin of two conversion chips is connected, first via power supply
The mode switch pin of the second voltage conversion chip PS2 ' of the second voltage conversion chip PS2 of unit and No. second power supply unit
ModeSwitch connection, two-way power supply unit are exported according to stream mode, respectively undertake a half-power；When two conversion chips
When mode switch pin disconnects, the second of the second voltage conversion chip PS2 of first via power supply unit and No. second power supply unit
The mode switch pin Mode Switch of voltage conversion chip PS2 ' is disconnected, and two-way power supply unit is exported according to hot standby mode, only
Power supply unit undertakes whole power all the way, i.e. realization univoltage flows/hot standby parallel output.
Similarly, if the first electricity of the first voltage conversion chip PS1 of first via power supply unit and No. second power supply unit
Pressure conversion chip PS1 ' also takes identical connection mode, i.e., realization twin voltage flows/hot standby parallel output.
Parallel output isolation circuit input terminal with can twin voltage conversion circuit output end in parallel connect, referring to Fig. 8 and Fig. 9,
Parallel output isolation circuit includes high_voltage isolation output circuit U2 and low pressure spacing output circuit U1, high_voltage isolation output circuit U2
It can support 9~80V voltage input, low pressure spacing output circuit U1 can support 0~18V voltage input.High_voltage isolation output circuit
U2 and low pressure spacing output circuit U1 is all made of metal-oxide-semiconductor and adds metal-oxide-semiconductor driving circuit mode, i.e. metal-oxide-semiconductor driving circuit output end connects
Connect metal-oxide-semiconductor grid G, metal-oxide-semiconductor source S connection+24V direct current, metal-oxide-semiconductor drain D output+24VA direct current.Low pressure isolation output
Circuit U 1 uses same connection type, output+5VA direct current.
Parallel output isolation circuit adds metal-oxide-semiconductor driving circuit mode using metal-oxide-semiconductor, and electricity is isolated with conventional schottky
Road is compared, and can effectively reduce power consumption, heat dissipation and voltage loss, and electric current transmits smooth dead-beat, once there is short circuit or event in power supply
Barrier, can be rapidly switched off by metal-oxide-semiconductor, reduce reverse current impact.After free voltage conversion chip, which breaks down, to be turned off, due to
Two voltage conversion chip parallel connections, another voltage conversion chip automatically switch to total power output, the normal work of proof load immediately
Make.
Referring to Figure 10, filter regulator circuit includes π type filter circuit and voltage-stabiliser tube, and the connection of π type filter circuit input terminal+
24VA direct current, π type filter circuit output end export 24V1+ direct current after voltage-stabiliser tube pressure stabilizing and use for load, pass through filtering
Voltage regulator circuit can provide steady reliable operating voltage for load.
The power module of the present embodiment protects conditioning circuit, over under-voltage protection circuit, temperature protection circuit structure by EMC
At the front-end protection circuit of power module, electromagnetic compatibility protection, overvoltage/undervoltage protection and temperature protection are carried out to power module；Pass through
Parallel output isolation circuit and filter regulator circuit constitute the post processing electric circuit of power module, to power module carry out isolation and
Steady pressure treatment.Can twin voltage conversion circuit in parallel by twin voltage conversion circuit, can be provided more when load needs multiple voltage
Kind voltage value realizes the output of mono-/bis-voltage form or the output of mono-/bis-voltage parallel.
Claims (8)
1. a kind of band multiple protective applied to rail vehicle can double-voltage electric power module in parallel, which includes two-way electricity
Source unit, every road power supply unit include EMC protection conditioning circuit, over under-voltage protection circuit, temperature protection circuit, can be in parallel double
Voltage conversion circuit, parallel output isolation circuit and filter regulator circuit, EMC protect conditioning circuit output end connection overvoltage/undervoltage to protect
Protection circuit and temperature protection circuit, three constitutes front-end protection circuit, after over under-voltage protection circuit and temperature protection circuit are in parallel
Successively with can in parallel twin voltage conversion circuit, parallel output isolation circuit and filter regulator circuit connect；It is characterized in that：
Every road power supply unit can twin voltage conversion circuit in parallel be equipped with two groups of voltage conversion chips, two groups of voltages conversions
Chip compatible front-end protects circuit, and two groups of voltage conversion chips are equipped with mode switch pin, and it is corresponding to disconnect two-way power supply unit
Voltage conversion chip mode switch pin, two-way power supply unit exports in hot standby mode；Connect two-way power supply unit phase
The mode switch pin for the voltage conversion chip answered, two-way power supply unit are exported in a manner of parallel current-sharing.
2. power module according to claim 1, it is characterised in that：The over under-voltage protection circuit include bleeder circuit,
Comparator circuit, metal-oxide-semiconductor switching circuit and failure indicating circuit, bleeder circuit input terminal connection+110VA direct current, partial pressure electricity
Road output end connects comparator circuit, and comparator circuit output end connects metal-oxide-semiconductor switching circuit and failure indicating circuit.
3. the power module stated according to claim 2, it is characterised in that：The temperature protection circuit and over under-voltage protection circuit are total
With a set of metal-oxide-semiconductor switching circuit, temperature protection circuit is equipped with temperature acquisition chip U5 and temperature fault indicator light D26, temperature are adopted
Collect chip U5 and be equipped with temperature threshold setting end, the first output end TH and second output terminal TL, temperature threshold sets end connection temperature
Resistance is set, the first output end TH is connected to MOS switch pipe Q1 grid G with second output terminal TL.
4. power module according to claim 1, it is characterised in that：The parallel output isolation circuit includes high_voltage isolation
Output circuit U2 and low pressure spacing output circuit U1, high_voltage isolation output circuit U2 support 9~80V voltage input, low pressure isolation
Output circuit U1 supports 0~18V voltage input.
5. power module according to claim 4, it is characterised in that：The high_voltage isolation output circuit U2 uses metal-oxide-semiconductor
Adding metal-oxide-semiconductor driving circuit mode, metal-oxide-semiconductor Q6 driving circuit output end connects metal-oxide-semiconductor Q6 grid G, the connection of metal-oxide-semiconductor Q6 source S+
24V direct current, metal-oxide-semiconductor Q6 drain D output+24VA direct current.
6. power module according to claim 4, it is characterised in that：The low pressure spacing output circuit U1 uses metal-oxide-semiconductor
Add metal-oxide-semiconductor driving circuit mode, metal-oxide-semiconductor Q5 driving circuit output end connects metal-oxide-semiconductor Q5 grid G, metal-oxide-semiconductor Q5 source S connection+5V
Direct current, metal-oxide-semiconductor Q5 drain D output+5VA direct current.
7. power module according to claim 1, it is characterised in that：The filter regulator circuit includes π type filter circuit
And voltage-stabiliser tube, π type filter circuit input terminal connection+24VA direct current, π type filter circuit output end export after voltage-stabiliser tube pressure stabilizing
24V1+ direct current is used for load.
8. power module according to claim 1, it is characterised in that：The EMC protection conditioning circuit includes conditioning circuit
Input terminal X1, varistor RV3, protective tube F1, filter capacitor C3, common mode inductance L1, capacitance group C4, TVS diode, counnter attack two
Pole pipe D6, conditioning circuit input terminal X1 are sequentially connected varistor RV3, protective tube F1, filter capacitor C3, common mode inductance L1, electricity
Appearance group C4, TVS diode and counnter attack diode D6, conditioning circuit input terminal X1 connection 110V DC power supply, varistor RV3 and
Filter capacitor C3 is in parallel with 110V DC power supply；Protective tube F1 is series between varistor RV3 and filter capacitor C3；TVS
Diode includes the first TVS diode D4 and the second TVS diode D5, the first TVS diode D4 anode and the second TVS diode
D5 anode is connected, and the first TVS diode D4 cathode connects counnter attack diode D6, and the output of counnter attack diode D6 cathode is conditioning electricity
Road 110VA direct current.
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| CN201610403613.9A CN106059296B (en) | 2016-06-08 | 2016-06-08 | Band multiple protective applied to rail vehicle can double-voltage electric power module in parallel |
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| CN201610403613.9A CN106059296B (en) | 2016-06-08 | 2016-06-08 | Band multiple protective applied to rail vehicle can double-voltage electric power module in parallel |
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| CN106849828B (en) * | 2017-03-27 | 2019-01-25 | 北京精密机电控制设备研究所 | A kind of MOSFET parallel current-equalizing circuit based on fault diagnosis |
| CN109561031A (en) * | 2018-10-12 | 2019-04-02 | 苏州科可瑞尔航空技术有限公司 | A kind of vehicle-mounted Layer 2 switch of high reliability |
| CN111049101A (en) * | 2020-01-02 | 2020-04-21 | 中车青岛四方车辆研究所有限公司 | Overvoltage protection circuit |
| ES2959225A1 (en) * | 2022-07-25 | 2024-02-21 | Premium S A | Surge protection module and procedure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064683A (en) * | 2010-12-29 | 2011-05-18 | 青岛四方车辆研究所有限公司 | Wide voltage input and invariable voltage output power supply module |
| CN201937469U (en) * | 2011-02-15 | 2011-08-17 | 青岛四方车辆研究所有限公司 | DC 110V to DC 24V power supply module |
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2016
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064683A (en) * | 2010-12-29 | 2011-05-18 | 青岛四方车辆研究所有限公司 | Wide voltage input and invariable voltage output power supply module |
| CN201937469U (en) * | 2011-02-15 | 2011-08-17 | 青岛四方车辆研究所有限公司 | DC 110V to DC 24V power supply module |
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| CN106059296A (en) | 2016-10-26 |
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