CN108551206A - The switching device and method that power module is powered using exchange with DC power supply - Google Patents
The switching device and method that power module is powered using exchange with DC power supply Download PDFInfo
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- CN108551206A CN108551206A CN201810579885.3A CN201810579885A CN108551206A CN 108551206 A CN108551206 A CN 108551206A CN 201810579885 A CN201810579885 A CN 201810579885A CN 108551206 A CN108551206 A CN 108551206A
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- 238000004891 communication Methods 0.000 claims abstract description 73
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000005611 electricity Effects 0.000 description 14
- 230000008859 change Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- MEGPURSNXMUDAE-RLMOJYMMSA-N scopoline Chemical compound C([C@H](O1)C2)[C@@H]3N(C)[C@H]2[C@H]1[C@H]3O MEGPURSNXMUDAE-RLMOJYMMSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention relates to a kind of power supply use device and methods.Technical solution is：Power module uses the switching device exchanged with DC power supply, it is characterised in that；The device includes that the direct current being sequentially electrically connected takes electric connector, switch controller and switching switch；It is the plug for meeting charging connector for electric automobile national standard that the direct current, which takes electric connector,；The switching switch includes first switch and first switch opening/closing operation mechanism, second switch and second switch opening/closing operation mechanism；The switch controller by Logic control module, CAN communication module, take status of electrically connecting measurement module, electronic lock control module, voltage and current acquisition module, divide-shut brake drive module, display module, key-press module, exchange incoming call detection module and power module form.The device and method is not necessarily to DC/AC contravariant equipments, and communications equipment room power module inputted using AC power or when DC supply input can it is safe and stable, reliably switch over.
Description
Technical field
The present invention relates to a kind of power supply use device and method, especially communications equipment room power modules to use exchange and direct current
The switching device and method of two kinds of power supply power supplies.
Background technology
Under normal conditions, the communication equipment of telecommunications room is converted into directly by single-phase or three-phase alternating current alternating current through power module
Flow 48V power supply power supplies；Bridge rectifier (AC/DC) circuit and DC/DC voltage that power module is generally made of 4 diodes
It converts (DC/DC) circuit to constitute, the AC/DC circuits of power module are by the high voltage direct current that electric main rectification is peak value 300V or so
Afterwards, the DC/DC conversion circuit (DC/DC) then through power module is converted into 48V DC power supplies.In order to be protected in commercial power interruption
Hinder communication equipment uninterrupted power supply, 48V DC power supplies power supply buses are generally also parallel with accumulator group, and power module is having alternating current
When also to accumulator group provide charging current；Telecommunications room using three-phase alternating current when being powered, for balanced three-phase load, one
As the input of multiple power modules is distributed evenly over as far as possible in each phase.
When commercial power interruption and when storage battery energy will drain, in order to ensure that communication equipment power supply is not interrupted, conventional side
Method is to send out alternating current using diesel engine generator to continue to power；Still an alternative is that utilizing electric automobile power battery
The affluence energy of high-voltage direct current, through DC/AC inverters by the direct current energy of electric automobile power battery be transformed to it is single-phase or
Person's three-phase alternating-current supply continues to power to communication equipment.
When electric automobile high-voltage direct current energy being powered through DC/AC inverters to communication equipment according to existing method, DC/
Be lost in AC inversion transfer processes it is larger, so bulk supply is less efficient；Simultaneously powerful DC/AC contravariant equipments volume compared with
Greatly, heavier-weight；The electronic component especially electronic components of high power of high power D C/AC contravariant equipments is more, inverter
Stability and dependability be affected to some extent；High power D C/AC contravariant equipment prices are also high simultaneously.
Invention content
The technical problem to be solved by the present invention is to：Overcome the shortcomings of above-mentioned background technology, proposes a kind of communications equipment room electricity
The switching device and method that source module is powered using AC power and DC power supply, the device and method are set without DC/AC inversions
It is standby, and communications equipment room power module inputted using AC power or when DC supply input can it is safe and stable, reliably into
Row switching；The purpose of emergency service is carried out to realize the electric energy using electric automobile power battery to communications equipment room power module.
Technical solution provided by the invention is：
Power module uses the switching device exchanged with DC power supply, it is characterised in that；The device includes sequentially being electrically connected
Direct current take electric connector, switch controller and switching switch；
It is the plug for meeting charging connector for electric automobile national standard that the direct current, which takes electric connector,；
The switching switch includes first switch and first switch opening/closing operation mechanism, second switch and second switch point
Switch-on operating mechanism；
The switch controller by Logic control module, CAN communication module, take status of electrically connecting measurement module, electronic lock
Control module, voltage and current acquisition module, divide-shut brake drive module, display module, key-press module, exchange incoming call detection module and
Power module forms；8 groups of input/output ports of the Logic control module in switch controller connect CAN communication module, take respectively
Status of electrically connecting measurement module, electronic lock control module, divide-shut brake drive module, display module, key-press module, voltage and current are adopted
Collect the signal end of module and exchange incoming call detection module；Power circuit in switch controller is by auxiliary power supply line through direct current
It takes electric connector to provide back work power supply to electric vehicle, also provides working power to switch controller modules circuit.
The input terminal order phase or three-phase and four-line electric main of the first switch of the switching switch, switch the of switch
The input terminals of two switches through in switch controller voltage and current acquisition module and high voltage direct current line, through direct current take electrical connection again
Device is connected with the output of the direct current energy of electric vehicle, and the first switch for switching switch exports the Same Name of Ends phase exported with second switch
Company is followed by the power module of communications equipment room；Switch controller takes electric connector connection status by CAN communication line, direct current respectively
The lines such as line, electronic lock control line, electronic lock feedback line, auxiliary power supply line take electric connector to be connected with direct current；Switch controller
First switch opening/closing operation mechanism, the second switch breaking-closing operating machine also switched respectively with switching through breaking-closing operating line
Structure is electrically connected, with the first switch of control switching switch and the combined floodgate (closure) and separating brake (disjunction) of second switch.
2 input terminals of switching switch are separately connected AC power and DC power supply, the load of switching switch output connection
It is the communications equipment room power module that AC power can be used to power or power using DC power supply.
Power module is included the following steps successively using the switching method of AC power above-mentioned and DC power supply power supply：
1) direct current energy of electric automobile power battery is bypassed into DC/AC contravariant equipments, the access communications after switching switchs
Power of computer room module；
2) contact of second switch carries out separating brake and conjunction when flowing through smaller DC current or even no current in switching switch
Lock operates.
When power module need to be switched to direct current supply by Alternating Current Power Supply, the first switch of the switching switch is in combined floodgate shape
State, second switch are in gate-dividing state, and switching device follows the steps below switching：
1) direct current is taken to the direct-current discharge interface of electric connector insertion electric vehicle；
2) " DC power supplies " button of the key-press module of operation switch controller, switch controller are electrically connected by taking
Connect state measuring block takes electric connector to be already inserted into the straight of electric vehicle through connection status line justification direct current
Stream take electrical interface and in place after；
3) switch controller is latched direct current through electronic lock line by electronic lock control module and takes the electronics in electric connector
Lock；
4) switch controller takes electric connector and electric vehicle to be led to by CAN communication module through CAN lines, direct current
Letter, inquires the nominal voltage, current voltage value and residual capacity of electric automobile power battery；
5) meet the input direct-current voltage model of communications equipment room power module in the current voltage value of electric automobile power battery
Enclose and the residual capacity of electric automobile power battery allow electric discharge when, switch controller is through divide-shut brake drive module and the first division
The first switch opening/closing operation mechanism of lock line notice switching switch carries out sub-switching operation to first switch；
6) after the first switch separating brake of switching switch, switch controller connects through divide-shut brake drive module and the second divide-shut brake
The second switch opening/closing operation mechanism of line notice switching switch carries out closing operation to second switch；
7) it closes a floodgate in the second switch of switching switch, and switch controller takes electrical connection through electronic lock feedback line justification direct current
After electronic lock in device has been latched, switch controller notifies electric vehicle to export high pressure by CAN communication module through CAN lines
Direct current energy.
8) switching that communications equipment room power module Alternating Current Power Supply is changed to direct current supply is completed.
High voltage direct current electric energy is exported through switching device to during the power supply of communications equipment room power module in electric vehicle, and switching is controlled
Device processed is communicated by CAN communication module timing with electric vehicle, to ensure that electric automobile high-voltage direct current energy persistently exports.
When power module need to be switched to Alternating Current Power Supply by direct current supply, the first switch of the switching switch is in separating brake shape
State, second switch are in "on" position, and switching device follows the steps below switching：
1) " AC power supplies " button of the key-press module of operation switch controller；
2) switch controller is communicated through CAN lines with electric vehicle by CAN communication module, and notice electric vehicle stops
Only export high voltage direct current electric energy；
3) switch controller confirms that electric vehicle stops output high voltage direct current, and high straightening through voltage and current acquisition module
When the voltage of galvanic electricity drops to safe operation value or less with electric current, through divide-shut brake drive module and the notice switching of the second divide-shut brake line
The second switch opening/closing operation mechanism of switch carries out sub-switching operation to second switch；
4) after second switch separating brake, switch controller unlocks direct current through electronic lock line by electronic lock control module and takes
Electronic lock in electric connector；
5) after switch controller takes the electronic lock in electric connector to unlock by electronic lock feedback line justification direct current, mould is shown
Block shows that direct current can be removed from electric vehicle direct-current discharge interface takes electric connector；
6) status of electrically connecting measurement module is taken to confirm that direct current takes electric connector through connection status line in switch controller
After being removed in electric vehicle direct-current discharge interface, opened through divide-shut brake drive module and the notice switching of the first divide-shut brake line
The first switch opening/closing operation mechanism of pass carries out closing operation to first switch；
7) switching that communications equipment room power module direct current supply is changed to Alternating Current Power Supply is completed.
The present invention by Alternating Current Power Supply is switched to direct current supply or by straight except above-mentioned manual operation communications equipment room power module
It flows outside power switching to the operating mode of Alternating Current Power Supply, is additionally provided with exchange incoming call detection module；When AC interruptions communication equipment
When room power module is powered by DC power supply, exchange can be automatically switched to after switch controller detects that AC power is restored
The automatic recovery mode of operation of power supply power supply.
When automatic recovery mode of operation, after open close letter power of computer room module is powered by DC power supply in the mains supply, institute
The first switch for stating switching switch is in gate-dividing state, and second switch is in "on" position；When switch controller detects exchange
After power up, switching device follows the steps below switching：
1) switch controller is after exchange incoming call detection module detects that AC power is restored；
2) switch controller is communicated through CAN lines with electric vehicle by CAN communication module, and notice electric vehicle stops
Only export high voltage direct current electric energy；
3) switch controller confirms that electric vehicle stops output high voltage direct current, and high straightening through voltage and current acquisition module
When the voltage of galvanic electricity drops to safe operation value or less with electric current, through divide-shut brake drive module and the notice switching of the second divide-shut brake line
The second switch opening/closing operation mechanism of switch carries out sub-switching operation to second switch；
4) after second switch separating brake, switch controller unlocks direct current through line by electronic lock control module and takes electrical connection
Electronic lock in device；
5) after switch controller takes the electronic lock in electric connector to unlock by electronic lock feedback line justification direct current, mould is shown
Block shows that direct current can be removed from electric vehicle direct-current discharge interface takes electric connector；
6) after second switch separating brake, first through divide-shut brake drive module and the first divide-shut brake line notice switching switch opens
It closes opening/closing operation mechanism and closing operation is carried out to first switch；
7) switching that the direct current supply of communications equipment room power module is changed to Alternating Current Power Supply automatically is completed.
Communications equipment room power module Alternating Current Power Supply, which is carried out, according to above step is changed to direct current supply and direct current supply change
For Alternating Current Power Supply, the contact of the second switch of divide-shut brake high voltage direct current disjunction or closure when either electric current is smaller for no current,
Substantially reduce the electric arc of contact disjunction or closure.
Exchange with the switching device of DC power supply when carrying out the above power supply conversion operation, the display module of switch controller
The state of real-time display handoff procedure or prompt operate in next step.
The beneficial effects of the invention are as follows：
The present invention makes full use of communications equipment room existing power supply module, without DC/AC inversions, by electric automobile power battery
Direct current energy is powered after power of alterating and direct current switching device to communications equipment room power module, has integral device efficient, volume
Feature small, light weight and cost is low, easy to use, reliability and stability is good.With use diesel engine generator to communication equipment
Emergency service compares, and communication equipment emergency service is given using the affluence energy of electric automobile power battery, good with mobility,
Expense is low, pollution-free, the advantages that not disturbing residents.
The switching method of AC DC power supply power supply of the present invention exists because of the contact of the second switch of connection high-voltage DC power supply
Breaking and closing moment electric current is smaller or even no current, and the voltage in disjunction between switch contact is relatively low, solves and commonly opens
The disadvantage for closing disjunction large-current high-voltage direct current arc extinguishing difficulty reduces the breaking capacity of the second switch of connection high-voltage DC power supply
It is required that.
Description of the drawings
Fig. 1 is the schematic diagram of power transfer device of the present invention.
Fig. 2 is the switch controller schematic diagram in the power transfer device.
Fig. 3 is telecommunications room power module schematic diagram.
Fig. 4 is the Logic control module schematic diagram in the switch controller.
Fig. 5 is the CAN communication module schematic diagram in the switch controller.
Fig. 6 is to take status of electrically connecting measurement module schematic diagram in the switch controller.
Fig. 7 is the electronic lock control module schematic diagram in the switch controller.
Fig. 8 is the voltage and current acquisition module schematic diagram in the switch controller.
Fig. 9 is the divide-shut brake drive module schematic diagram in the switch controller.
Figure 10 is the display module schematic diagram in the switch controller.
Figure 11 is the key-press module schematic diagram in the switch controller.
Figure 12 is the power circuit principle figure in the switch controller.
Figure 13 is the exchange incoming call detection module schematic diagram in the switch controller.
Specific implementation mode
Embodiment is further illustrated below in conjunction with attached drawing.
Referring to 3 power module schematic diagram of attached drawing, the diode (D1~D4) in Fig. 3 forms the AC/DC circuits of bridge rectifier,
When input (ACIN_A, ACIN_N) connects the AC power of 220V, AC power is after bridge rectifier and filter capacitor (C)
Become the DC power supply of peak value 300V or so, the direct current of 300V or so is converted into through DC/DC conversion circuit (DC/DC) again
48V DC power supplies export (DC_OUT-, DC_OUT+)；If telecommunications room power module input (ACIN_A, ACIN_N) it
The DC power supply of indirect 300V or so regards the polarity that DC power supply accesses, rectifier diode in AC/DC circuits (D1, D2, D3,
D4) it is always 2 forward conducting, 2 reversed cut-offs, the both ends presentation of the filter capacitor (C) in communications equipment room power module
It is also the direct current of 300V or so, in view of in this way, having the exchange of the communications equipment room power module of bridge rectifier in input terminal
Input terminal can be powered with input DC power, as long as the voltage value of input DC power is in the DC/DC of communications equipment room power module
In the operating voltage range of circuit, communications equipment room power module can work normally.
The purpose of the present invention is the electric automobile power batteries of use can be to communications equipment room without DC/AC inverters
Power module emergency service, and a kind of switching that communications equipment room power module is powered using AC power and DC power supply is provided
Device.There are the dual power switching device of two tunnel AC power inputs, pair of bis- tunnel DC supply inputs of Ye You in the prior art
Road power transfer device, but the dual power switching device of AC power and DC power supply Mixed design is there is no, because input is
All the way AC power and all the way be DC power supply double loop power supply switching have its particularity requirement, illustrated following：
With former telecommunications room, totally 3 power modules, the exchange input of 3 power modules are connected on three-phase city to the present embodiment respectively
For A, B, C phase of electricity, specific embodiments of the present invention are described with reference to the drawings.
Referring to attached drawing 1, power of alterating and direct current of the invention input switching device takes electric connector (1), switching control by direct current
Device (2), switching switch (3) composition；It is to meet " electric car conduction chargeable connection device DC charging that direct current, which takes electric connector,
The plug of interface " national standard, by power contact and high voltage direct current line (HV_L1, HV_L2), CAN communication contact and line (S
+, S-), accessory power supply contact and accessory power supply line (A+, A-), electronic lock and electronic lock control line (EL), electronic lock feedback line
(K), direct current takes the compositions such as electric connector connection status line (CC1, CC2).Switch switch 3 by first switch (K1) and first switch
Opening/closing operation mechanism (3-1), second switch (K2) and second switch opening/closing operation mechanism (3-2) composition, switch switch
Input terminal (ACIN_A, ACIN_B, ACIN_C, ACIN_N) the order phase or three-phase and four-line electric main of first switch, switching
The input terminal (DCIN_A, DCIN_B) of the second switch of switch is through the voltage and current acquisition module (2- in switch controller (2)
5), high voltage direct current line (HV_L1, HV_L2), the direct current energy the output phase of electric connector (1) and electric vehicle is taken through direct current again
Even；After the first switch output of switching switch is connected with second switch output Same Name of Ends (OUT_A, OUT_B, OUT_C, OUT_N)
Connect the power module of communications equipment room；Switch controller takes electric connector to connect shape by CAN communication line (S+, S-), direct current respectively
The lines such as state line (CC1, CC2), electronic lock control line (EL), electronic lock feedback line (K), accessory power supply line (A+, A-) with it is straight
Stream takes electric connector to be connected, and switch controller is also through breaking-closing operating line (FHZ1_+, FHZ1_-, FHZ2_+, FHZ2_-) point
First switch opening/closing operation mechanism (3-1), second switch opening/closing operation mechanism (3-2) not with switching switch are electrically connected,
With the first switch of control switching switch and the combined floodgate (closure) and separating brake (disjunction) of second switch.
2 input terminals for switching switch (switch the second switch of the input terminal and switching switch of the first switch of switch
Input terminal) what is be separately connected is AC power and DC power supply, the load of switching switch output connection is can both to use to hand over
Power supply power supply is flowed, the communications equipment room power module that DC power supply can also be used to power.
When communications equipment room has 3 power modules its input connect respectively switching switch power supply output OUT_A, OUT_N with
Load is distributed evenly over by OUT_B, OUT_N and OUT_C, OUT_N as far as possible when communications equipment room has multiple power modules
In AC three-phase.
Referring to attached drawing 2, switch controller (2) by Logic control module (2-1), CAN communication module (2-2), take electrical connection
State measuring block (2-3), electronic lock control module (2-4), voltage and current acquisition module (2-5), divide-shut brake drive module (2-
6), display module (2-7), key-press module (2-8), exchange incoming call detection module (2-10) and power circuit (2-9) composition, switching
The Logic control module 2-1 of controller 8 groups of input/output ports (IO_1, IO_2, IO_3, IO_4, IO_5, IO_6, IO_7,
IO_8 CAN communication module) is connect respectively, is taken status of electrically connecting measurement module, electronic lock control module, divide-shut brake drive module, is shown
Show module, key-press module, voltage and current acquisition module and the signal end for exchanging incoming call detection module, the electricity in switch controller
Source circuit takes electric connector to provide back work power supply, power supply to electric vehicle by accessory power supply line (A+, A-) through direct current
Circuit also provides working power to switch controller modules circuit.
Referring to attached drawing 4 in conjunction with attached drawing 2, the Logic control module (2-1) in switch controller (2) is by chip microprocessor
(1IC1), quartz crystal (JT1) form；Two pins of quartz crystal (JT1) connect the crystal oscillator of chip microprocessor 1IC1 respectively
Input, output end (OSCIN, OSCOUT), the working power of chip microprocessor (1IC1)+, working power-(VDD, VSS) point
Do not connect+5V with publicly, 8 groups of input/output ports of chip microprocessor (1IC1) (I/O_1, I/O_2, I/O_3, I/O_4,
I/O_5, I/O_6, I/O_7, I/O_8) respectively with CAN communication module, take status of electrically connecting measurement module, electronic lock controlled molding
The letter of block, divide-shut brake drive module, display module, key-press module, voltage and current acquisition module and exchange incoming call detection module
Number end be connected, the model STM8 of chip microprocessor (1IC1) can also use other monolithic microprocessors with AD functions
Device.
Referring to attached drawing 5 in conjunction with attached drawing 2, the CAN communication module (2-2) in switch controller (2) is by CAN transceiver chip
(2IC1) and terminal resistance (2R1) form；The line scan pickup coil side (CANH, CANL) of CAN transceiver chip 2IC1 through CAN lines (S+,
S- the corresponding contacts of electric connector) are taken to direct current, the data transmit-receive end (TX, RX) of CAN transceiver chip 2IC1 is through line (I/O_
1-1, I/O_1-2) digital port of Logic control module 2-1 is arrived, terminal resistance (2R1) is connected in parallel on CAN transceiver chip 2IC1
Line scan pickup coil side CANH, CANL, the model TD301DCANH3 of CAN transceiver chip (2IC1), can also use other have every
CAN transceiver chip from function.
Referring to attached drawing 6 in conjunction with attached drawing 2, take status of electrically connecting measurement module 2-3 by resistance in switch controller (2)
The CC1 bleeder circuits of (3R1,3R2,3R3) composition and the CC2 current shunting circuits composition being made of resistance (3R4) ,+12V power supplys
One end of connecting resistance 3R1, the other end of 3R1 connect common ground through 3R2,3R3, and the tie point of 3R1 and 3R2 are through connection status line
CC1 takes the contacts CC1 of electric connector to direct current, and the tie point of 3R2 and 3R3 are defeated through the AD of I/O_2 lines to Logic control module 2-1
Arrival line, Logic control module 2-1 take the plug of electric connector to be whether fully inserted into and take electricity according to the judgement of the voltage change at the ends CC1
The socket of connector and the state for judging electronic lock；One end of resistance (3R4) picks up electricity through connection status line (CC2) to direct current
The contacts CC2 of connector, another termination of resistance (3R4) publicly, take the plug of electric connector to take electric connector in insertion
After socket, because resistance 3R4 has shunted the one part of current in the circuits CC2, CC2 and publicly between voltage change, electronic vapour
Vehicle takes electric connector according to the voltage change between CC2 and common ground to judge to take the plug of electric connector to be whether fully inserted into
Socket.
Referring to attached drawing 7 in conjunction with attached drawing 2, electronic lock control module 2-4 in switch controller (2) by triode (4BG1,
4BG2), the bleeder circuit of the switching circuit of resistance (4R1,4R2) composition and resistance (4R3,4R4,4R5) composition is constituted；Triode
The collector that the emitter of 4BG1 meets power supply+12V, 4BG1 is connect with electronic lock control line (EL), and the base stage of 4BG1 is through resistance 4R1
The collector of triode 4BG2 is connect, the emitter of 4BG2 connects publicly, and the base stage of 4BG2 connects logic through resistance 4R2 and I/O_3-1
The digital output port of control module 2-1；A termination+12V power supplys of resistance 4R3, the other end of 4R3 is through resistance 4R4, resistance
4R5 connects common ground, and the tie point of 4R3 and 4R4 is connected to the contacts K for taking electric connector through electronic lock feedback line K, resistance 4R4 with
The tie point of resistance 4R5 is through I/O_3-2 lines to the digital input port of Logic control module 2-1.
It is the mechanical device that an electromagnet is constituted, the logic in switch controller that direct current, which takes the electronic lock in electric connector,
Control module 2-1 through I/O_3-1 output low and high level control electromagnet actuation or release, Logic control module 2-1 according to
The level change judgement of electronic lock feedback of status line (K) takes the electronic lock in electric connector (1) to be whether latched.
Referring to attached drawing 8 in conjunction with attached drawing 2 and attached drawing 1, the voltage and current acquisition module of the high voltage direct current in switch controller (2)
Bleeder circuit, current sampling resistor (5R3), operational amplifier (5IC1) and the resistance that 2-5 is made of resistance (5R1,5R2)
The current signal amplifier circuit of (5R4,5R5,5R6) composition is constituted；The input for the bleeder circuit that resistance 5R1, resistance 5R2 are formed connects
High voltage direct current inputs between (HV_L1 and HV_L2), and the tie point of 5R1 and 5R2 is the output of bleeder circuit through line (I/O_7-
1) the AD input mouth lines of Logic control module 2-1 are connect, current sampling resistor (5R3) is connected between HV_L2 and DCIN_B, from electricity
The in-phase end that the current signal that resistance 5R3 is sampled meets operational amplifier 5IC1 through resistance (5R6) inputs, operational amplifier 5IC1's
Another AD that output meets Logic control module 2-1 through line (I/O_7-2) inputs mouth line, Logic control module 2-1 analog-to-digital conversions
The voltage of I/O_7-1, I/O_7-2 line is the voltage value and current value that may know that high voltage direct current.
Referring to attached drawing 9 in conjunction with attached drawing 2, divide-shut brake drive module 2-6 in switch controller (2) by relay (6J1,
6J2,6J3,6J4), triode (6BG1,6BG2,6BG3,6BG4), resistance (6R1,6R2,6R3,6R4) constitute, triode 6BG1
Collector be connected with line packet one end of relay 6J1, another termination power 12V+ of the line packet of 6J1, the base stage of 6BG1 is through electricity
Resistance 6R1 and I/O_4_1 is wired to the output mouth line of Logic control module 2-1, and the emitter of triode 6BG1 connects common ground,
6J1_A is the contact of relay 6J1；
The collector of triode 6BG2 is connected with line packet one end of relay 6J2, another termination power of the line packet of 6J2
The base stage of 12V+, 6BG2 are wired to the output mouth line of Logic control module 2-1 through resistance 6R2 and I/O_4_2, triode 6BG2's
Emitter connects common ground, the 2 secondary transfer contacts that 6J2_A, 6J2_B are relay 6J2；
The collector of triode 6BG3 is connected with line packet one end of relay 6J3, another termination power of the line packet of 6J3
The base stage of 12V+, 6BG3 are wired to the output mouth line of Logic control module 2-1 through resistance 6R3 and I/O_4_3, triode 6BG3's
Emitter connects common ground, and 6J3_A is the contact of relay 6J3；
The collector of triode 6BG4 is connected with line packet one end of relay 6J4, another termination power of the line packet of 6J4
The base stage of 12V+, 6BG4 are wired to the output mouth line of Logic control module 2-1 through resistance 6R4 and I/O_4_4, triode 6BG4's
Emitter connects common ground, the 2 secondary transfer contacts that 6J4_A, 6J4_B are relay 6J4；
Divide-shut brake drive module 2-6 according to Fig. 9 electrical schematic diagrams connection：
When the output mouth line I/O_4_1 of Logic control module 2-1 is high level and I/O_4_2 is low level, relay
6J1 is attracted, and it is publicly first switch breaking-closing operating that the output FHZ1_+ of divide-shut brake drive module 2-6, which is 12V+, FHZ1_-,
Mechanism 3-1 executes closing operation；
When the output mouth line I/O_4_1 of Logic control module 2-1 is high level and I/O_4_2 is also high level, relay
Device 6J1,6J2 are attracted, the output FHZ1_+ of divide-shut brake drive module 2-6 be publicly, FHZ1_- 12V+, first switch point
Switch-on operating mechanism 3-1 executes sub-switching operation；
When the output mouth line I/O_4_3 of Logic control module 2-1 is high level and I/O_4_4 is low level, relay
6J3 is attracted, and it is publicly second switch breaking-closing operating that the output FHZ2_+ of divide-shut brake drive module 2-6, which is 12V+, FHZ2_-,
Mechanism 3-2 executes closing operation；
When the output mouth line I/O_4_3 of Logic control module 2-1 is high level and I/O_4_4 is also high level, relay
Device 6J3,6J4 are attracted, the output FHZ2_+ of divide-shut brake drive module 2-6 be publicly, FHZ2_- 12V+, second switch point
Switch-on operating mechanism 3-2 executes sub-switching operation.
Referring to attached drawing 10 in conjunction with attached drawing 2, liquid that the display module (2-7) in switch controller (2) is driven by general band
Crystal display screen (7YJ1) is constituted, and the power end (VDD, VSS) of liquid crystal display (7YJ1) connects power supply+5V and publicly, liquid crystal
The data transmit-receive end (RX, TX) of display screen (7YJ1) is defeated through line (I/O_5-1, I/O_5-2) and the data of Logic control module 2-1
Enter to export mouth line to be connected, liquid crystal display model TJC4024T032, other can also be used with the liquid crystal display of driving.
Referring to attached drawing 11 in conjunction with attached drawing 2, key-press module (2-8) in switch controller (2) by 4 buttons (8K1,8K2,
8K3,8K4) with 4 pull-up resistors (8R1,8R2,8R3,8R4) constitute the work(such as " AC power supplies ", " DC power supplies ", " selection ", " confirmation "
It can button；The other end of a termination power+5V of resistance 8R1,8R2,8R3,8R4, resistance 8R1,8R2,8R3,8R4 connect respectively by
One end of key 8K1,8K2,8K3,8K4, another termination common ground of button 8K1,8K2,8K3,8K4, resistance 8R1,8R2,
8R3,8R4 and the junctions button 8K1,8K2,8K3,8K4 are connected through I/O_6-1, I/O_6-2, I/O_6-3, I/O_6-4 line respectively
To 4 digital input ports of the Logic control module 2-1 of switch controller, usually I/O_6-1, I/O_6-2, I/O_6-3, I/
O_6-4 lines are high level, and when having by key pressing, corresponding mouth line is low level, it may be necessary to increase the mouth line of button
To increase more selection functions.
Referring to attached drawing 13 in conjunction with attached drawing 2, the exchange incoming call detection module (2-10) in switch controller (2) is by 3 rectifications
Diode (10D1,10D2,10D3), 3 current-limiting resistances (10R1,10R2,10R3), 3 photoelectrical couplers (10GD1,10GD2,
10GD3) formed with 3 pull-up resistors (10R4,10R5,10R6).
In attached drawing 13, the just extremely line (L1) of rectifier diode 10D1, the cathode of rectifier diode 10D1 is through current limliting electricity
Hinder 10R1, the anode of photoelectrical coupler 10GD1,10GD1 cathode line (N), the emitter of photoelectrical coupler 10GD1 connect public affairs in succession
Altogether, the digital input port of Logic control module 2-1 of the collector of 10GD1 through line I/O_8-1 to switch controller, on
The collector of another termination photoelectrical coupler 10GD1 of mono- termination+5V, 10R4 of pull-up resistor 10R4；
In attached drawing 13, the just extremely line (L2) of rectifier diode 10D2, the cathode of rectifier diode 10D2 is through current limliting electricity
Line (N), the emitter of photoelectrical coupler 10GD2 connect the cathode of resistance 10R2, the anode of photoelectrical coupler 10GD2 and 10GD2 in succession
Publicly, the digital input port of Logic control module 2-1 of the collector of 10GD2 through line I/O_8-2 to switch controller,
The collector of another termination photoelectrical coupler 10GD2 of mono- termination+5V, 10R5 of pull-up resistor 10R5；
In attached drawing 13, the just extremely line (L3) of rectifier diode 10D3, the cathode of rectifier diode 10D3 is through current limliting electricity
Line (N), the emitter of photoelectrical coupler 10GD3 connect the cathode of resistance 10R3, the anode of photoelectrical coupler 10GD3 and 10GD3 in succession
Publicly, the digital input port of Logic control module 2-1 of the collector of 10GD3 through line I/O_8-3 to switch controller,
The collector of another termination photoelectrical coupler 10GD3 of mono- termination+5V, 10R6 of pull-up resistor 10R6；
The input terminal (L1, L2, L3) of the exchange incoming call detection module of attached drawing 13 connects three-phase alternating-current supply A, B, C phase respectively,
When there is three-phase alternating-current supply input, the collector emitter alternate conduction of photoelectrical coupler 10GD1,10GD2,10GD3, line
I/O_8-1, I/O_8-2, I/O_8-3 are presented the low and high level of 50HZ respectively, the Logic control module 2-1 of switch controller according to
The level change of I/O_8-1, I/O_8-2, I/O_8-3 institute connectivity port learns the interruption and recovery of three-phase alternating-current supply power supply.
Referring to attached drawing 12 in conjunction with attached drawing 2, the power circuit 2-9 in switch controller (2) is opened by battery pack (BATT), power supply
Close (9K1), integrated regulator (9IC1,9IC2,9IC3) is constituted, output+pole of battery pack is after power switch to each steady
Input (IN) end of integrated circuit, the output (OUT) of integrated regulator 9IC1 is pressed to be connected to by accessory power supply line A+ and A-
Direct current takes electric connector to provide back work power supply to electric vehicle, the output (OUT) of 9IC2 and the output (OUT) of 9IC3 to
The each circuit offer+5V and+12V working powers of power of alterating and direct current switching device.
It is the conventional electricity with mechanical interlocked function that the present invention, which switches first switch K1 in switch and second switch K2,
Signal controls the switch of combined floodgate separating brake, can be that breaker, stacked switch, power magnetic force keeping relay or magnetic are kept in contact
Device；The opening/closing operation mechanism of first switch K1 and second switch K2 can be that motor, electromagnet of energy bidirectional rotation etc. are existing
Some operating mechanisms, according to different opening/closing operation mechanisms, divide-shut brake drive module circuit should adjust accordingly.
If the communication equipment of telecommunications room may be used 2 groups by single phase ac mains-supplied, switching of the invention switch
The first switch K1 and second switch K2 of contact.
It is connect for convenience with electric automobile power battery, increases power battery through direct-current charging interface pair in electric vehicle
After the function and communication protocol of outer power supply, direct current of the present invention takes electric connector that can be taken from the direct-current charging interface of electric vehicle
Electricity, electric vehicle are not required to separately set power battery electric discharge connecting seat.
Claims (10)
1. power module uses the switching device of exchange and DC power supply power supply, it is characterised in that；The device includes sequentially being electrically connected
The direct current connect takes electric connector (1), switch controller (2) and switching switch (3)；
It is the plug for meeting charging connector for electric automobile national standard that the direct current, which takes electric connector,；
Switching switch include first switch (K1) and first switch opening/closing operation mechanism (3-1), second switch (K2) and
Second switch opening/closing operation mechanism (3-2)；
The switch controller by Logic control module (2-1), CAN communication module (2-2), take status of electrically connecting measurement module
(2-3), electronic lock control module (2-4), voltage and current acquisition module (2-5), divide-shut brake drive module (2-6), display module
(2-7), key-press module (2-8), exchange incoming call detection module (2-10) and power module (2-9) composition；In switch controller
8 groups of input/output ports (IO_1, IO_2, IO_3, IO_4, IO_5, IO_6, IO_7, IO_8) of Logic control module connect respectively
CAN communication module takes status of electrically connecting measurement module, electronic lock control module, divide-shut brake drive module, display module, button
The signal end of module, voltage and current acquisition module and exchange incoming call detection module；Power circuit in switch controller passes through
Accessory power supply line (A+, A-) takes electric connector to provide back work power supply to electric vehicle through direct current, also to switch controller
Modules circuit provides working power.
2. power module according to claim 1 uses the switching device of exchange and DC power supply power supply, it is characterised in that：
Input terminal (ACIN_A, ACIN_B, ACIN_C, ACIN_N) the order phase or three-phase and four-line of the first switch of the switching switch
Electric main, the input terminal (DCIN_A, DCIN_B) for switching the second switch of switch are adopted through the voltage and current in switch controller
Collection module and high voltage direct current line (HV_L1, HV_L2), again through direct current take the direct current energy of electric connector and electric vehicle export
It is connected；The first switch output of switching switch is connected with second switch output Same Name of Ends (OUT_A, OUT_B, OUT_C, OUT_N)
It is followed by the power module of communications equipment room；Switch controller takes electric connector connection status line by CAN communication line, direct current respectively
(CC1, CC2), electronic lock control line (EL), electronic lock feedback line (K), accessory power supply line take electric connector to be connected with direct current；
Switch controller also through breaking-closing operating line (FHZ1_+, FHZ1_-, FHZ2_+, FHZ2_-) respectively with switching switch first
Opening/closing operation mechanism, the electrical connection of second switch opening/closing operation mechanism are switched, with the first switch and the of control switching switch
The combined floodgate and separating brake of two switches.
3. power module according to claim 1 uses the switching device of exchange and DC power supply power supply, it is characterised in that：
2 input terminals of switching switch are separately connected AC power and DC power supply, and the load of switching switch output connection is both can be with
The communications equipment room power module that DC power supply is powered can also be used using AC power power supply.
4. power module described in claim 1 is using the switching method of exchange and the switching device of DC power supply power supply, successively
Include the following steps：
1) direct current energy of electric automobile power battery is accessed into communication equipment around after DC/AC contravariant equipments after switching switchs
Room power module；
2) contact of second switch carries out separating brake when flowing through smaller DC current or even no current and the behaviour that closes a floodgate in switching switch
Make.
5. the switching method for the switching device that power module according to claim 4 is powered using exchange with DC power supply,
It is characterized in that：When communications equipment room power module need to be switched to direct current supply by Alternating Current Power Supply, the first of the switching switch opens
It closes and is in "on" position, second switch is in gate-dividing state, and switching device follows the steps below switching：
1) direct current is taken to the direct-current discharge interface of electric connector insertion electric vehicle；
2) " DC power supplies " button of the key-press module (2-8) of operation switch controller, switch controller is by taking status of electrically connecting
Measurement module confirms that the direct current that direct current takes electric connector to be already inserted into electric vehicle takes electrical interface through connection status line (CC1, CC2)
And in place after；
3) switch controller is latched direct current through electronic lock line (EL) by electronic lock control module and takes the electronics in electric connector
Lock；
4) switch controller takes electric connector and electric vehicle to carry out by CAN communication module through CAN lines (S+, S-), direct current
Communication, inquires the nominal voltage, current voltage value and residual capacity of electric automobile power battery；
5) the current voltage value of electric automobile power battery meet the input direct-current voltage range of communications equipment room power module and
When the residual capacity of electric automobile power battery allows electric discharge, switch controller connects through divide-shut brake drive module and the first divide-shut brake
The first switch opening/closing operation mechanism of line (FHZ1_+, FHZ1_-) notice switching switch carries out sub-switching operation to first switch；
6) after the first switch separating brake of switching switch, switch controller is through divide-shut brake drive module and the second divide-shut brake line
The second switch opening/closing operation mechanism of (FHZ2_+, FHZ2_-) notice switching switch carries out closing operation to second switch；
7) it closes a floodgate in the second switch of switching switch, and switch controller takes through electronic lock feedback line justification direct current in electric connector
Electronic lock be latched after, switch controller by CAN communication module through CAN lines notify electric vehicle export high voltage direct current
Electric energy.
8) switching that communications equipment room power module Alternating Current Power Supply is changed to direct current supply is completed.
6. the switching method for the switching device that power module according to claim 5 is powered using exchange with DC power supply,
It is characterized in that：High voltage direct current electric energy is exported through switching device to during the power supply of communications equipment room power module in electric vehicle, is cut
Changer controller is communicated by CAN communication module timing with electric vehicle, to ensure that electric automobile high-voltage direct current energy persistently exports.
7. the switching method for the switching device that power module according to claim 4 is powered using exchange with DC power supply,
It is characterized in that：When communications equipment room power module need to be switched to Alternating Current Power Supply by direct current supply, the first of the switching switch opens
It closes and is in gate-dividing state, second switch is in "on" position, and switching device follows the steps below switching：
1) " AC power supplies " button of the key-press module of operation switch controller；
2) switch controller is communicated through CAN lines with electric vehicle by CAN communication module, and notice electric vehicle stops defeated
Go out high voltage direct current electric energy；
3) switch controller confirms that electric vehicle stops output high voltage direct current, and high voltage direct current through voltage and current acquisition module
Voltage and electric current when dropping to safe operation value or less, through divide-shut brake drive module and the second divide-shut brake line notice switching switch
Second switch opening/closing operation mechanism to second switch carry out sub-switching operation；
4) after second switch separating brake, switch controller is taken through electronic lock line unlock direct current by electronic lock control module and is electrically connected
Connect the electronic lock in device；
5) after switch controller takes the electronic lock in electric connector to unlock by electronic lock feedback line justification direct current, display module is aobvious
Direct current can be removed from electric vehicle direct-current discharge interface by, which showing, takes electric connector；
6) status of electrically connecting measurement module is taken to confirm that direct current has taken electric connector through connection status line in switch controller
After being removed in electric vehicle direct-current discharge interface, switched through divide-shut brake drive module and the notice switching of the first divide-shut brake line
First switch opening/closing operation mechanism carries out closing operation to first switch；
7) switching that communications equipment room power module direct current supply is changed to Alternating Current Power Supply is completed.
8. the switching side for the switching device that the power module described according to claim 6 or 7 is powered using exchange with DC power supply
Method, it is characterised in that：The present invention be additionally provided with exchange incoming call detection module, when AC interruptions communications equipment room power module by
When DC power supply is powered, oneself of AC power power supply can be automatically switched to after switch controller detects that AC power is restored
Dynamic recovery mode of operation.
9. the switching method for the switching device that power module according to claim 8 is powered using exchange with DC power supply,
It is characterized in that：When automatic recovery mode of operation, after open close letter power of computer room module is powered by DC power supply in the mains supply,
The first switch of the switching switch is in gate-dividing state, and second switch is in "on" position, when switch controller detects friendship
After flowing power up, switching device follows the steps below switching：
1) switch controller is after exchange incoming call detection module detects that AC power is restored；
2) switch controller is communicated through CAN lines with electric vehicle by CAN communication module, and notice electric vehicle stops defeated
Go out high voltage direct current electric energy；
3) switch controller confirms that electric vehicle stops output high voltage direct current, and high voltage direct current through voltage and current acquisition module
Voltage and electric current when dropping to safe operation value or less, through divide-shut brake drive module and the second divide-shut brake line notice switching switch
Second switch opening/closing operation mechanism to second switch carry out sub-switching operation；
4) after second switch separating brake, switch controller unlocks direct current through line by electronic lock control module and takes in electric connector
Electronic lock；
5) after switch controller takes the electronic lock in electric connector to unlock by electronic lock feedback line justification direct current, display module is aobvious
Direct current can be removed from electric vehicle direct-current discharge interface by, which showing, takes electric connector；
6) after second switch separating brake, the first switch point through divide-shut brake drive module and the first divide-shut brake line notice switching switch
Switch-on operating mechanism carries out closing operation to first switch；
7) switching that the direct current supply of communications equipment room power module is changed to Alternating Current Power Supply automatically is completed.
10. the switching method for the switching device that power module according to claim 9 is powered using exchange with DC power supply,
It is characterized in that：Exchange with the switching device of DC power supply when carrying out the above power supply conversion operation, the display of switch controller
The state of module real-time display handoff procedure or prompt operate in next step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579885.3A CN108551206B (en) | 2018-06-07 | 2018-06-07 | Switching device and method for power supply module to supply power by using alternating current and direct current power sources |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579885.3A CN108551206B (en) | 2018-06-07 | 2018-06-07 | Switching device and method for power supply module to supply power by using alternating current and direct current power sources |
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| CN108551206B (en) | 2023-11-24 |
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