CN105730239B - A kind of vehicle-mounted load supplying circuit - Google Patents
A kind of vehicle-mounted load supplying circuit Download PDFInfo
- Publication number
- CN105730239B CN105730239B CN201610076365.1A CN201610076365A CN105730239B CN 105730239 B CN105730239 B CN 105730239B CN 201610076365 A CN201610076365 A CN 201610076365A CN 105730239 B CN105730239 B CN 105730239B
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- vehicle
- contactor
- power supply
- mounted load
- phase sequence
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- 230000005611 electricity Effects 0.000 claims abstract description 17
- 238000000819 phase cycle Methods 0.000 claims description 52
- 238000001514 detection method Methods 0.000 claims description 47
- 230000003137 locomotive effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of vehicle-mounted load supplying circuit, is detected by control unit and judges that vehicle power supply whether there is output voltage, and when vehicle power supply is there are when output voltage, control first contactor is closed, and is vehicle-mounted load supplying by vehicle power supply；When first contactor is closed, normally-closed contact disconnects, and makes the coil losing electricity of second contactor so that second contactor disconnects, so that library socket and the connection of vehicle-mounted load disconnect；When output voltage is not present in vehicle power supply, control unit controls first contactor and disconnects, and vehicle power supply and the connection of vehicle-mounted load disconnect；The normally-closed contact of first contactor is closed simultaneously, and the coil of second contactor obtains electric so that second contactor is closed, and then is vehicle-mounted load supplying by library socket；The final automatic power realized as vehicle-mounted load, without manually finding vehicle-mounted load non-transformer supply and the handover operation by being manually powered power supply.
Description
Technical field
The present invention relates to vehicle-mounted power supply technique field, more particularly to a kind of vehicle-mounted load supplying circuit.
Background technology
Vehicle-mounted load in track transportation industry, mains electricity locomotive is generally powered by vehicle power supply.But work as
Vehicle power supply does not have a voltage output, and some vehicle-mounted loads are when such as train ancillary equipment needs power supply power supply, in the prior art
Vehicle-mounted load can be usually powered by the library socket of mains electricity locomotive.But by library socket to vehicle-mounted
Load is powered, and needs manually to find vehicle-mounted load non-transformer supply, and the handover operation by being manually powered power supply,
It cannot achieve the automatic power for vehicle-mounted load.
Invention content
The present invention provides a kind of vehicle-mounted load supplying circuit, to realize the automatic power for vehicle-mounted load.
In order to achieve the object, technical solution provided by the present application is as follows：
A kind of vehicle-mounted load supplying circuit is applied to mains electricity locomotive, with vehicle-mounted load, vehicle power supply and library socket
It is connected, the vehicle-mounted load supplying circuit includes：Control unit, first contactor and second contactor；Wherein：
Described control unit is connected with the control terminal of the first contactor and the vehicle power supply, for detecting and judging
The vehicle power supply whether there is output voltage, when the vehicle power supply is there are when output voltage, control the first contactor
It is closed；When output voltage is not present in the vehicle power supply, controls the first contactor and disconnect；
The input terminal of the first contactor is connected with the vehicle power supply, and output end is connected with the vehicle-mounted load, institute
The normally-closed contact of first contactor and the coil group of the second contactor are stated into series arm, the series arm is connected to directly
Between the both ends in galvanic electricity source, the normally-closed contact of the first contactor makes institute for being disconnected when the first contactor is closed
State the coil losing electricity of second contactor；It is closed when the first contactor disconnects, so that the coil of the second contactor is obtained electric；
The input terminal of the second contactor is connected with the library with socket, and output end is connected with the vehicle-mounted load, uses
It disconnects in the coil losing electricity of the second contactor, is closed when the coil of the second contactor obtains electric.
Preferably, the series arm further includes：Phase sequence detection relay；Wherein：
The Phase sequence detection relay passes through the power input and power output end of itself and the first contactor
Normally-closed contact and the series connection of the coil of the second contactor, the detection input of the Phase sequence detection relay is used with the library inserts
Seat is connected；Whether the phase sequence for the output voltage that the Phase sequence detection relay is used to detect the library socket is correct, works as detection
When the phase sequence of the output voltage of the library socket is correct, the power input is connect with the power output end, works as detection
When the phase sequence of the output voltage of the library socket is incorrect, the power input connect disconnection with the power output end.
Preferably, further include：Remote input module and remote output module；Wherein：
The remote input module passes through the input terminal and output end of itself and the Phase sequence detection relay, described first
The normally-closed contact of contactor and the coil of the second contactor form the series arm；The control of the remote input module
End is connected with described control unit；
The input terminal of the remote output module is connected between the both ends of the DC power supply, the remote output module
Output end be connected with described control unit；The remote output module whether there is for detecting the Phase sequence detection relay
Output, output testing result to described control unit；
Described control unit is additionally operable to：It detects the vehicle power supply and whether there is output voltage, when the vehicle power supply is deposited
In output voltage, the remote input module shutdown is controlled；When output voltage is not present in the vehicle power supply, described in control
Remote input module is closed；And receive the testing result of the remote output module output.
Preferably, described control unit is additionally operable to：According to the testing result, generates and export Phase sequence detection signal.
Preferably, the remote input module is controllable switch.
Preferably, the remote output module is input voltage type.
Preferably, further include：With the intermediate relay of the remote input wired in parallel.
Preferably, further include：First fuse；The first fuse is connected in series in described with the first contactor
Between vehicle power supply and the vehicle-mounted load.
Preferably, further include：Second fuse；The second fuse is connected in series in described with the second contactor
Between library socket and the vehicle-mounted load.
Vehicle-mounted load supplying circuit provided by the invention is detected by control unit and judges vehicle power supply with the presence or absence of defeated
Go out voltage, when the vehicle power supply is there are when output voltage, control first contactor is closed, and is vehicle-mounted negative by the vehicle power supply
Carry power supply；When the first contactor is closed, normally-closed contact disconnects, and makes the coil losing electricity of second contactor so that described the
Two contactors disconnect, so that library socket and the connection of the vehicle-mounted load disconnect；When there is no defeated for the vehicle power supply
When going out voltage, described control unit controls the first contactor and disconnects, the connection of the vehicle power supply and the vehicle-mounted load
It disconnects；The normally-closed contact of the first contactor is closed simultaneously, and the coil of the second contactor obtains electric so that described second connects
Tentaculum is closed, and then is the vehicle-mounted load supplying by the library socket；Finally realize as the automatic of the vehicle-mounted load
Power supply, without manually finding vehicle-mounted load non-transformer supply and the handover operation by being manually powered power supply.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the circuit diagram of vehicle-mounted load supplying circuit provided in an embodiment of the present invention；
Fig. 2 is another circuit diagram for the vehicle-mounted load supplying circuit that another embodiment of the present invention provides；
Fig. 3 is another circuit diagram for the vehicle-mounted load supplying circuit that another embodiment of the present invention provides；
Fig. 4 is another circuit diagram for the vehicle-mounted load supplying circuit that another embodiment of the present invention provides.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.
The present invention provides a kind of vehicle-mounted load supplying circuit, to realize the automatic power for vehicle-mounted load.
Specifically, the vehicle-mounted load supplying circuit is applied to mains electricity locomotive, as shown in Figure 1, with vehicle-mounted load
100, vehicle power supply 200 and library are connected with socket 300, and vehicle-mounted load supplying circuit 400 includes：Control unit, first contactor
K1 and second contactor K2；Wherein：
Described control unit is connected with the control terminal of first contactor K1 and vehicle power supply 200；
The input terminal of first contactor K1 is connected with vehicle power supply 200, and output end is connected with vehicle-mounted load 100, and first connects
The normally-closed contact K10 of tentaculum and the coil K20 of second contactor form series arm, and the series arm is connected to DC power supply
Between the both ends of DC；
The input terminal of second contactor K2 is connected with library socket 300, and output end is connected with vehicle-mounted load 100.
It is worth noting that Fig. 1 is only a kind of example, wherein the normally-closed contact K10 and DC power supply DC of first contactor
Cathode be connected, the coil K20 of second contactor is connected with the anode of DC power supply DC；But in actual application, first connects
The normally-closed contact K10 of tentaculum and the coil K20 of second contactor only need to be connected in series between the both ends of DC power supply DC i.e.
Can, the positive and negative anodes connection relation of the two and DC power supply DC are simultaneously not specifically limited, within the scope of protection of this application.
In addition, the power supply of 110V output voltages may be used in DC power supply DC, it is not specifically limited, is specifically answered depending on it herein
Depending on environment.
Specifically operation principle is：
Described control unit is for detecting and judging that vehicle power supply 200 whether there is output voltage, when vehicle power supply 200 is deposited
In output voltage, control first contactor K1 is closed；When output voltage is not present in vehicle power supply 200, the first contact of control
Device K1 is disconnected；
The normally-closed contact K10 of first contactor makes the line of second contactor for being disconnected when first contactor K1 is closed
Enclose K20 dead electricity；It is closed when first contactor K1 is disconnected, so that the coil K20 of second contactor is obtained electric；
Second contactor K2 in the coil K20 dead electricity of second contactor for disconnecting, in the coil K20 of second contactor
It is closed when obtaining electric.
Vehicle-mounted load supplying circuit 400 provided in this embodiment, is detected by described control unit and judges vehicle power supply
200 whether there is output voltage, and when vehicle power supply 200 is there are when output voltage, control first contactor K1 is closed, by vehicle mounted electric
Source 200 is 100 power supply of vehicle-mounted load；When first contactor K1 is closed, normally-closed contact K10 is disconnected, and makes the line of second contactor
Enclosing K20 dead electricity so that second contactor K2 is disconnected, so that library socket 300 and the connection of vehicle-mounted load 100 disconnect, it is real
Hardware interlocking is showed, avoid vehicle power supply 200 and library socket 300 while having powered for vehicle-mounted load 100；When vehicle power supply 200
There is no when output voltage, described control unit controls first contactor K1 and disconnects, vehicle power supply 200 and vehicle-mounted load 100
Connection disconnects；The normally-closed contact K10 of first contactor is closed simultaneously, and the coil K20 of second contactor obtains electric so that the second contact
Device K2 is closed, and then is 100 power supply of vehicle-mounted load by library socket 300；The final automatic confession realized as vehicle-mounted load 100
Electricity, without manually finding vehicle-mounted load non-transformer supply and the handover operation by being manually powered power supply.
Preferably, as shown in Fig. 2, the series arm in vehicle-mounted load supplying circuit 400 further includes：Phase sequence detection after
Electric appliance F1；Wherein：
Phase sequence detection relay F1 by itself power input 14 and power output end 11 and first contactor it is normal
The coil K20 series connection of closed contact K10 and second contactor, detection input and the library socket 300 of Phase sequence detection relay F1
It is connected.
Whether the phase sequence for the output voltage that Phase sequence detection relay F1 is used to detect library socket 300 is correct, when detection library
When correct with the phase sequence of the output voltage of socket 300, power input 14 is connect with power output end 11, when detection library socket
When the phase sequence of 300 output voltage is incorrect, power input 14 connect disconnection with power output end 11.
When output voltage is not present in described control unit detection vehicle power supply 200, described control unit control first connects
Tentaculum K1 is disconnected, and vehicle power supply 200 and the connection of vehicle-mounted load 100 disconnect；The normally-closed contact K10 of first contactor is closed simultaneously
It closes；Library 300 output voltage of socket to the detection input of Phase sequence detection relay F1, at this time Phase sequence detection relay F1 detections
Whether library is correct with the phase sequence of 300 output voltage of socket, if phase sequence is correct, then the power input 14 of Phase sequence detection relay F1
And power output end 11 connects, and the normally-closed contact K10 of first contactor is in closed state, then the coil of second contactor
K20 obtain it is electric, second contactor K2 main contacts be closed, library is on 300 output voltage of socket to vehicle-mounted three-phase bus U/V/W.If
When Phase sequence detection relay F1 detects that the phase sequence of output voltage is incorrect, then the power input 14 of Phase sequence detection relay F1
And the connection of power output end 11 disconnects, the coil K20 of second contactor cannot obtain electric, then 300 output voltage of library socket cannot
It is input on vehicle-mounted three-phase bus, avoids leading to unnecessary harm because of Problem of phase sequence, play the work for protecting vehicle-mounted load 100
With.
It is worth noting that Fig. 2 is only a kind of example, the normally-closed contact of Phase sequence detection relay F1 and first contactor
K10 and the coil K20 of second contactor are connected in series between the both ends of DC power supply DC, and three is with DC power supply DC's
Positive and negative anodes connection relation is simultaneously not specifically limited, within the scope of protection of this application.
Preferably, as shown in figure 3, vehicle-mounted load supplying circuit 400 further includes：Remote input modules A 2 and remotely export mould
Block A1；Wherein：
Remote input modules A 2 passes through the input terminal and output end of itself and Phase sequence detection relay F1, first contactor
Normally-closed contact K10 and the coil K20 of second contactor form the series arm；The control terminal of remote input modules A 2 with it is described
Control unit is connected；
The input terminal of remote output module A1 is connected between the both ends of DC power supply DC, the output of remote output module A1
End is connected with described control unit；
Described control unit is additionally operable to：It detects vehicle power supply 200 and whether there is output voltage, when vehicle power supply 200 exists
When output voltage, control remote input modules A 2 turns off, it is ensured that the coil K20 of second contactor will not obtain electric, realize software
Interlocking avoids vehicle power supply 200 and library socket 300 while powering for vehicle-mounted load 100；When there is no defeated for vehicle power supply 200
When going out voltage, control remote input modules A 2 is closed, at this time in the series arm where the coil K20 in second contactor, far
The A2 conductings of journey input module, the normally-closed contact K10 conductings of first contactor, as long as Phase sequence detection relay F1 detects library socket
The phase sequence of 300 output voltages is correct, then the power input 14 of Phase sequence detection relay F1 and power output end 11 connect, and second
The coil K20 of contactor can obtain electric, and second contactor K2 main contacts is closed, library socket 300 can output voltage to vehicle-mounted
On three-phase bus U/V/W.
Remote output module A1 is for detecting Phase sequence detection relay F1 with the presence or absence of output, namely detection second contactor
Coil K20 whether it is electric, and export testing result to described control unit；When the closure of remote input modules A 2, Phase sequence detection
The power input 14 of relay F1 is connect with power output end 11, and when the normally-closed contact K10 closures of first contactor, direct current
There are electric current between the both ends of power supply DC, remote output module A1 exports testing result to described control unit.
Preferably, described control unit is additionally operable to, and according to the testing result, is generated and is exported Phase sequence detection signal.
Specifically, when remote input modules A 2 is closed, power input 14 and the power supply of Phase sequence detection relay F1 export
11 connection of end, and when the normally-closed contact K10 closures of first contactor, there are electric currents between the both ends of DC power supply DC, long-range defeated
Go out module A1 outputs testing result described control unit is generated according to the testing result and exports the correct phase sequence of phase sequence
Detect signal；Otherwise the Phase sequence detection signal of phase sequence mistake will be exported.
The Phase sequence detection signal can be used for showing library with the testing result of the phase sequence of 300 output voltage of socket
Show, to play certain suggesting effect, the more conducively application of vehicle-mounted load supplying circuit 400.
Preferably, remote input modules A 2 is controllable switch.
Preferably, remote output module A1 is input voltage type, such as current sensor.
In specific practical application, remote input modules A 2 and remote output module A1 is not necessarily limited to this, can
With depending on its specific application environment, within the scope of protection of this application.
Preferably, as shown in figure 4, vehicle-mounted load supplying circuit 400 further includes：The centre in parallel with remote input modules A 2
Relay K3.
2 short circuit of remote input modules A can be replaced remote input modules A 2 by intermediate relay K3 by intermediate relay K3
Realize the power supply control for vehicle-mounted load 100.
Preferably, as shown in figure 4, vehicle-mounted load supplying circuit 400 further includes：First fuse Q1；First fuse Q1
It is connected in series between vehicle power supply 200 and vehicle-mounted load 100 with first contactor K1.
Preferably, as shown in figure 4, vehicle-mounted load supplying circuit 400 further includes：Second fuse Q2；Second fuse Q2
It is connected in series between library socket 300 and vehicle-mounted load 100 with second contactor K2.
Overload protection may be implemented in first fuse Q1 and second fuse Q2, increases vehicle-mounted load supplying circuit 400
Reliability.
It is worth noting that Fig. 3 and Fig. 4 are only a kind of example, remote input modules A 2 and Phase sequence detection relay F1,
The normally-closed contact K10 of first contactor and the coil K20 of second contactor are connected in series between the both ends of DC power supply DC i.e.
Can, four with the positive and negative anodes connection relation of DC power supply DC and be not specifically limited, within the scope of protection of this application.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art
Member, without departing from the scope of the technical proposal of the invention, all using the methods and technical content of the disclosure above to the present invention
Technical solution makes many possible changes and modifications, or is revised as the equivalent embodiment of equivalent variations.Therefore, it is every without departing from
The content of technical solution of the present invention, according to the technical essence of the invention any simple modification made to the above embodiment, equivalent
Variation and modification, still fall within technical solution of the present invention protection in the range of.
Claims (7)
1. a kind of vehicle-mounted load supplying circuit, which is characterized in that be applied to mains electricity locomotive, with vehicle-mounted load, vehicle power supply
And library is connected with socket, the vehicle-mounted load supplying circuit includes：Control unit, first contactor and second contactor；Wherein：
Described control unit is connected with the control terminal of the first contactor and the vehicle power supply, described for detecting and judging
Vehicle power supply whether there is output voltage, when the vehicle power supply is closed there are the first contactor when output voltage, is controlled；
When output voltage is not present in the vehicle power supply, controls the first contactor and disconnect；
The input terminal of the first contactor is connected with the vehicle power supply, and output end is connected with the vehicle-mounted load, and described the
For the coil group of the normally-closed contact of one contactor and the second contactor at series arm, the series arm is connected to direct current
Between the both ends in source, the normally-closed contact of the first contactor makes described for being disconnected when the first contactor is closed
The coil losing electricity of two contactors；It is closed when the first contactor disconnects, so that the coil of the second contactor is obtained electric；
The input terminal of the second contactor is connected with the library with socket, and output end is connected with the vehicle-mounted load, is used for
It disconnects when the coil losing electricity of the second contactor, is closed when the coil of the second contactor obtains electric；
The series arm further includes：Phase sequence detection relay；Wherein：
The Phase sequence detection relay by itself power input and power output end and the first contactor it is normally closed
The coil of contact and the second contactor is connected, detection input and the library socket phase of the Phase sequence detection relay
Even；Whether the phase sequence for the output voltage that the Phase sequence detection relay is used to detect the library socket is correct, described in detection
When the phase sequence of the output voltage of library socket is correct, the power input is connect with the power output end, described in detection
When the phase sequence of the output voltage of library socket is incorrect, the power input connect disconnection with the power output end；
Further include：Remote input module and remote output module；Wherein：
The remote input module is contacted by the input terminal and output end of itself with the Phase sequence detection relay, described first
The normally-closed contact of device and the coil of the second contactor form the series arm；The control terminal of the remote input module with
Described control unit is connected；
The input terminal of the remote output module is connected between the both ends of the DC power supply, the remote output module it is defeated
Outlet is connected with described control unit；The remote output module is for detecting the Phase sequence detection relay with the presence or absence of defeated
Go out, output testing result to described control unit；
Described control unit is additionally operable to：It detects the vehicle power supply and whether there is output voltage, when there are defeated for the vehicle power supply
When going out voltage, the remote input module shutdown is controlled；When output voltage is not present in the vehicle power supply, control described long-range
Input module is closed；And receive the testing result of the remote output module output.
2. vehicle-mounted load supplying circuit according to claim 1, which is characterized in that described control unit is additionally operable to：According to
The testing result generates and exports Phase sequence detection signal.
3. vehicle-mounted load supplying circuit according to claim 1, which is characterized in that the remote input module is controllably to open
It closes.
4. vehicle-mounted load supplying circuit according to claim 1, which is characterized in that the remote output module is input electricity
Die mould.
5. vehicle-mounted load supplying circuit according to claim 1, which is characterized in that further include：With the remote input mould
The intermediate relay of block parallel connection.
6. vehicle-mounted load supplying circuit according to any one of claims 1 to 5, which is characterized in that further include：First fusing
Device；The first fuse and the first contactor are connected in series between the vehicle power supply and the vehicle-mounted load.
7. vehicle-mounted load supplying circuit according to any one of claims 1 to 5, which is characterized in that further include：Second fusing
Device；The second fuse and the second contactor are connected in series between the library socket and the vehicle-mounted load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610076365.1A CN105730239B (en) | 2016-02-03 | 2016-02-03 | A kind of vehicle-mounted load supplying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610076365.1A CN105730239B (en) | 2016-02-03 | 2016-02-03 | A kind of vehicle-mounted load supplying circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN105730239A CN105730239A (en) | 2016-07-06 |
| CN105730239B true CN105730239B (en) | 2018-08-28 |
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| CN201610076365.1A Active CN105730239B (en) | 2016-02-03 | 2016-02-03 | A kind of vehicle-mounted load supplying circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109586292A (en) * | 2019-01-31 | 2019-04-05 | 中车株洲电力机车有限公司 | A kind of library power supply protection system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203504284U (en) * | 2013-09-06 | 2014-03-26 | 河北钢铁股份有限公司邯郸分公司 | Supply circuit of auxiliary device of large-scale unit |
| CN105257515A (en) * | 2015-10-04 | 2016-01-20 | 沈阳南车时代交通设备有限公司 | Device and method for guaranteeing power supply of air compressor of SS9 locomotive |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4396515B2 (en) * | 2004-12-22 | 2010-01-13 | トヨタ自動車株式会社 | Power supply |
| EP2607178B1 (en) * | 2011-12-21 | 2014-07-30 | Volvo Car Corporation | Power supply for powering an electric load of a vehicle |
| CN204415167U (en) * | 2014-10-17 | 2015-06-24 | 朱思益 | Special-use vehicle electric power system |
| CN105150863B (en) * | 2015-08-27 | 2017-06-23 | 株洲南车时代电气股份有限公司 | A kind of rolling stock external power source access device |
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2016
- 2016-02-03 CN CN201610076365.1A patent/CN105730239B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203504284U (en) * | 2013-09-06 | 2014-03-26 | 河北钢铁股份有限公司邯郸分公司 | Supply circuit of auxiliary device of large-scale unit |
| CN105257515A (en) * | 2015-10-04 | 2016-01-20 | 沈阳南车时代交通设备有限公司 | Device and method for guaranteeing power supply of air compressor of SS9 locomotive |
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