CN111775979A - Continuous cycle charge-discharge locomotive power supply - Google Patents
Continuous cycle charge-discharge locomotive power supply Download PDFInfo
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- CN111775979A CN111775979A CN202010699461.8A CN202010699461A CN111775979A CN 111775979 A CN111775979 A CN 111775979A CN 202010699461 A CN202010699461 A CN 202010699461A CN 111775979 A CN111775979 A CN 111775979A
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- storage battery
- battery
- power supply
- rechargeable
- inverter
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000003381 stabilizer Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000005476 soldering Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
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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
- 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
- H02J9/062—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 for AC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a continuous cycle charge-discharge locomotive power supply, which comprises a rechargeable storage battery and at least one spare storage battery, wherein the spare storage battery is selected to be put into operation, and the output ends of the rechargeable storage battery and the spare storage battery are respectively connected with the input end of a change-over switch; the input end of the rechargeable storage battery is connected with commercial power through a charging module, the output end of the change-over switch is connected to the inverter, and the output end of the inverter is sequentially connected with the rectifying module and the voltage stabilizer in series; the charging device comprises a charging module, a current signal detection module and a processor, wherein the charging module is connected with the input end of the charging module; the invention combines the continuous switching of various power supply modes to ensure that the unit can effectively enter the power supply state of the storage battery in the power-off state of the commercial power, and the phenomenon of power-off restart of the unit in the whole process can not occur.
Description
Technical Field
The invention relates to the field of power supplies, in particular to a power supply for a continuous cycle charging and discharging electric locomotive.
Background
The locomotive special power supply is a customized power supply specially developed and produced for railway locomotive monitoring power supply equipment. The existing products are successfully applied to railway wireless communication base stations, railway platform scheduling, railway standby power supply devices and railway locomotive basic power supply systems, and are suitable for various train equipment DC24/DC12V power supply equipment. For example, the KJ160 series power supply is a custom-made power supply developed and produced specifically for railroad locomotive monitoring power supply equipment. The existing products are successfully applied to railway wireless communication base stations, railway platform scheduling, railway standby power supply devices and railway locomotive basic power supply systems, and are suitable for various train equipment DC24/DC12V power supply equipment. 90-264 VDC input, low standby power consumption, high power factor, small volume, high efficiency, stable work and the like.
The existing power supply is generally connected with a mains supply, the existing power supply is changed into power supply output suitable for equipment power supply specifications through a rectification circuit, once a mains supply power failure device faces a shutdown risk, in order to solve the problem, a storage battery or a generator which can be charged and discharged is prepared to serve as a standby power supply in a common mode at present, but the existing state has a defect that once the power failure occurs, the equipment still has a short power failure phenomenon, and needs to be shut down to wait for restarting, so that equipment failure is easily caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a power supply of a continuous cycle charging and discharging electric locomotive, which is combined with continuous switching of multiple power supply modes to ensure that a unit can effectively enter a storage battery power supply state in the mains supply power-off state and the phenomenon of power-off restart cannot occur in the whole process.
The purpose of the invention is realized by the following technical scheme:
a continuous cycle charge-discharge electric locomotive power supply comprising:
the output ends of the rechargeable storage battery and the standby storage battery are respectively connected with the input end of a change-over switch;
the input end of the rechargeable storage battery is connected with commercial power through a charging module, the output end of the change-over switch is connected to the inverter, and the output end of the inverter is sequentially connected with the rectifying module and the voltage stabilizer in series;
the charging device comprises a charging module, a current signal detection module and a processor, wherein the charging module is connected with the input end of the charging module;
in an initial state, the rechargeable storage battery is conducted with the inverter through the change-over switch, when the commercial power is cut off, the processor controls the change-over switch to conduct the standby storage battery and the inverter, and after the standby storage battery and the inverter are conducted, the rechargeable storage battery is disconnected with the inverter.
The utility model provides a commercial power supplies power with the electric energy via rechargeable battery through the module of charging, designs one or more spare battery simultaneously, when the commercial power outage, switches the power supply of spare battery, because the commercial power carries out indirect power supply through rechargeable battery, even consequently even the commercial power outage, still have partly surplus electric energy in rechargeable battery and can guarantee that the power supply is incessant for the outage of short time can not appear in the group when switching spare battery, and equipment need not the shut down promptly and has accomplished the switching of power promptly.
Furthermore, the output ends of the rechargeable storage battery and the spare storage battery are respectively connected with a rectifying circuit in parallel, the output ends of the rectifying circuits are respectively connected to the change-over switches, and a circuit breaking switch controlled by the processor is respectively connected in series between the output ends of the rechargeable storage battery and the spare storage battery and the change-over switches;
when the rechargeable storage battery and the standby storage battery are connected to the inverter through the change-over switch at the same time, the processor controls the disconnection of the circuit-breaking switch, the rechargeable storage battery and the standby storage battery are input to the inverter through the change-over switch after being rectified by the rectifying circuit, and when the rechargeable storage battery or the standby storage battery is selected to be connected to the inverter through the change-over switch, the circuit-breaking switch closes the rectifying circuit and is disconnected.
The purpose of this design is in order to guarantee that the switching process, the input current of inverter is unanimous, avoids appearing electric power oscillation, because rechargeable battery and reserve battery adopt parallel access, its output voltage is unchangeable, consequently only need to its electric current carry out the rectification can, when the switching process finishes, under the single battery power supply state of formation, rectifier circuit disconnection, supply current resumes.
Furthermore, the output power of the rechargeable storage battery is the same as that of the spare storage battery, and the rectifying circuit is used for rectifying the output circuits of the rechargeable storage battery and the spare storage battery to be one half of the rated power of the rechargeable storage battery and the spare storage battery.
Further, the changeover switch includes:
the electric connector comprises a shell and a rotating part which is arranged in the shell and is driven by a motor to rotate, wherein a section of arc-shaped conductive column with a central angle larger than 270 degrees is fixed by taking the rotating part as a center;
a first wiring terminal, a second wiring terminal and a third wiring terminal are respectively arranged on three continuous quadrant points taking the rotating part as the center, and opposite ends of the first wiring terminal, the second wiring terminal and the third wiring terminal are respectively fixed with a section of arc wiring pipe;
the arc-shaped conductive columns sequentially penetrate through the arc-shaped wiring tubes, so that the first wiring terminal and the third wiring terminal are electrically connected;
the first binding post and the second binding post are respectively connected with the rechargeable battery and the standby battery, and the third binding post is connected with the inverter;
the motor is connected with the processor, and the processor controls the arc-shaped conductive column to rotate clockwise or anticlockwise and is used for switching the electric connection state between the third binding post and the first binding post and the second binding post.
This design can guarantee the switch at the switching process, only when reserve battery access system back, but rechargeable battery disconnection, and whole process carries out once operation and can accomplishes, need not the multiple switch and switches repeatedly.
Further, the radian of the arc-shaped wiring pipe is the same as that of the arc-shaped conductive column.
Furthermore, a pressure sensor or a travel switch connected with the processor is arranged in the arc-shaped wiring pipe and used for feeding back the electric connection state among the first wiring terminal, the second wiring terminal and the third wiring terminal, and the processor controls the state of the circuit breaker according to the fed-back information.
Furthermore, the both ends design for the toper of arc-shaped conductive post, the design is for the toper to make things convenient for the stable access arc-shaped connection pipe that connects of arc-shaped conductive post.
Further, the standby storage battery is fully charged in a normal power supply state of the mains supply to serve as a standby, and the types of the standby storage battery comprise an alternating current/direct current rechargeable battery and a solar rechargeable battery.
The invention has the beneficial effects that: compared with the traditional power supply, the invention utilizes the series connection of the commercial power and the rechargeable storage battery as the commercial power supply circuit, so that the commercial power still has the surplus stored in the rechargeable storage battery in the power supply process, when the commercial power is disconnected, the surplus of the rechargeable storage battery can support the power supply in a short time, thereby ensuring that the temporary halt of a unit can not be caused when the standby storage battery is switched, avoiding the secondary start of the equipment, effectively protecting the equipment and maintaining the normal work of the equipment.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a system schematic of another embodiment of the present invention;
FIG. 3 is a schematic diagram of the switch state;
FIG. 4 is a schematic diagram of the second switch state;
fig. 5 is a schematic diagram of the switching state three.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the following specific examples, but the scope of the present invention is not limited to the following.
Referring to fig. 1, a continuous cycle charging and discharging locomotive power supply comprises:
the output ends of the rechargeable storage battery and the standby storage battery are respectively connected with the input end of a change-over switch;
the input end of the rechargeable storage battery is connected with commercial power through a charging module, the output end of the change-over switch is connected to the inverter, and the output end of the inverter is sequentially connected with the rectifying module and the voltage stabilizer in series;
the charging device comprises a current signal detection module connected with the input end of the charging module and a processor connected with the current signal detection module, wherein the processor is connected with a selector switch;
in the initial state, the rechargeable storage battery is conducted with the inverter through the change-over switch, when the commercial power is cut off, the processor controls the change-over switch to connect the standby storage battery and the inverter, and after the standby storage battery and the inverter are connected, the connection between the rechargeable storage battery and the inverter is disconnected.
Optionally, in a power supply of a continuous cycle charging and discharging electric locomotive, the output ends of the rechargeable storage battery and the spare storage battery are respectively connected in parallel with a rectification circuit, the output ends of the rectification circuits are respectively connected to the change-over switch, and a circuit breaking switch controlled by the processor is respectively connected in series between the output ends of the rechargeable storage battery and the spare storage battery and the change-over switch; when the rechargeable storage battery and the standby storage battery are connected to the inverter through the selector switch at the same time, the processor controls the disconnection of the breaker switch, the rechargeable storage battery and the standby storage battery are input to the inverter through the selector switch after being rectified by the rectifying circuit, and when the rechargeable storage battery and the standby storage battery are connected to the inverter through the selector switch, the breaker switch closes the rectifying circuit and is disconnected. The output power of the rechargeable storage battery is the same as that of the spare storage battery, and the rectifying circuit is used for rectifying the output circuits of the rechargeable storage battery and the spare storage battery to be one half of the rated power of the rechargeable storage battery and the spare storage battery.
Further, the changeover switch includes:
the device comprises a shell 1, a rotating part 2 which is arranged in the shell 1 and is driven by a motor to rotate, and an arc-shaped conductive column 3 with a central angle larger than 270 degrees and fixed by taking the rotating part 2 as a center;
a first wiring terminal 4, a second wiring terminal 5 and a third wiring terminal 6 are respectively arranged on three continuous quadrant points taking the rotating part 2 as the center, and opposite ends of the first wiring terminal 4, the second wiring terminal 5 and the third wiring terminal 6 are respectively fixed with a section of arc-shaped wiring pipe 7;
the arc-shaped conductive columns 3 sequentially penetrate through the arc-shaped wiring tubes 7, so that the first wiring terminal 4 and the third wiring terminal 6 are electrically connected;
the first binding post 4 and the second binding post 5 are respectively connected with the rechargeable battery and the standby battery, and the third binding post 6 is connected with the inverter;
the motor is connected with the treater, and the treater control arc leads electrical pillar 3 clockwise or anticlockwise rotation for switch the electric connection state between third terminal 6 and first terminal 4 and the second terminal 5. Referring to fig. 3-5, three on states are shown, fig. 3 shows the initial state of the power supply, and the first terminal 4 and the third terminal 6 are conducted, wherein the first terminal 4 is connected with a rechargeable battery, that is, in this state, the mains supply is adopted for supplying power. After the commercial power outage, the treater detects the outage condition according to current signal detection module, the control motor rotates, make the arc lead electrical pillar 3 rotatory, thereby get into the state two shown in figure 4, first terminal 4 under this state, second terminal 5 and third terminal 6 switch on, namely first terminal 4, second terminal 5 and third terminal 6 form parallel relation, rechargeable battery and reserve battery put into operation simultaneously, the treater still controls the circuit breaker and opens this moment, make rechargeable battery and reserve battery insert the dc-to-ac converter behind the rectifier circuit respectively. Continuing to rotate the arc-shaped conductive column 3 in the state, entering a state III shown in fig. 5, wherein the second terminal 5 is conducted with the third terminal 6 in the state, that is, the standby battery is put into operation, and meanwhile, the processing also controls the closing of the circuit breaker and the disconnection of the rectifier circuit, so that the rechargeable battery and the standby battery output normally.
As a preferred embodiment, the arc of the arc-shaped patch tube 7 is the same as the arc of the arc-shaped conductive post 3. The two ends of the arc-shaped conductive column 3 are designed to be conical
On the other hand, in order to improve the control accuracy of the process, the embodiment also provides a signal feedback control, a pressure sensor or a travel switch connected with a processor is arranged in the arc-shaped wiring tube 7 and used for feeding back the electric connection state among the first wiring terminal 4, the second wiring terminal 5 and the third wiring terminal 6, and the processor controls the state of the circuit breaker according to the fed-back information.
In this embodiment, the backup battery is fully charged in a normal power supply state of the utility power as a backup, and the types of the backup battery include an ac/dc rechargeable battery and a solar rechargeable battery.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A continuous cycle charge-discharge locomotive power supply is characterized by comprising:
the output ends of the rechargeable storage battery and the standby storage battery are respectively connected with the input end of a change-over switch;
the input end of the rechargeable storage battery is connected with commercial power through a charging module, the output end of the change-over switch is connected to the inverter, and the output end of the inverter is sequentially connected with the rectifying module and the voltage stabilizer in series;
the charging device comprises a charging module, a current signal detection module and a processor, wherein the charging module is connected with the input end of the charging module;
in an initial state, the rechargeable storage battery is conducted with the inverter through the change-over switch, when the commercial power is cut off, the processor controls the change-over switch to conduct the standby storage battery and the inverter, and after the standby storage battery and the inverter are conducted, the rechargeable storage battery is disconnected with the inverter.
2. The continuous-cycle charge-discharge locomotive power supply according to claim 1, wherein the output ends of the rechargeable battery and the backup battery are respectively connected in parallel with a rectifying circuit, the output ends of the rectifying circuits are respectively connected to the change-over switches, and a circuit breaking switch controlled by the processor is respectively connected in series between the output ends of the rechargeable battery and the backup battery and the change-over switches;
when the rechargeable storage battery and the standby storage battery are connected to the inverter through the change-over switch at the same time, the processor controls the disconnection of the circuit-breaking switch, the rechargeable storage battery and the standby storage battery are input to the inverter through the change-over switch after being rectified by the rectifying circuit, and when the rechargeable storage battery or the standby storage battery is selected to be connected to the inverter through the change-over switch, the circuit-breaking switch closes the rectifying circuit and is disconnected.
3. The continuous-cycle charging and discharging locomotive power supply according to claim 2, wherein the output power of the rechargeable battery and the backup battery is the same, and the rectifying circuit is used for rectifying the output circuit of the rechargeable battery and the backup battery to be one-half of the rated power of the rechargeable battery and the backup battery.
4. The continuous-cycle power supply for the charge and discharge electric locomotive according to claim 3, wherein the change-over switch comprises:
the electric soldering iron comprises a shell (1), a rotating part (2) which is arranged in the shell (1) and driven by a motor to rotate, and an arc-shaped conductive column (3) with a central angle larger than 270 degrees and fixed by taking the rotating part (2) as a center;
a first wiring terminal (4), a second wiring terminal (5) and a third wiring terminal (6) are respectively arranged on three continuous quadrant points taking the rotating part (2) as the center, and opposite ends of the first wiring terminal (4), the second wiring terminal (5) and the third wiring terminal (6) are respectively fixed with a section of arc-shaped wiring pipe (7);
the arc-shaped conductive columns (3) sequentially penetrate through the arc-shaped wiring tubes (7), so that the first wiring terminal (4) and the third wiring terminal (6) are electrically connected;
the first terminal (4) and the second terminal (5) are respectively connected with a rechargeable battery and a spare battery, and the third terminal (6) is connected with an inverter;
the motor is connected with the processor, and the processor controls the arc-shaped conductive column (3) to rotate clockwise or anticlockwise and is used for switching the electric connection state between the third binding post (6) and the first binding post (4) and the second binding post (5).
5. A continuous cycle electric charge and discharge locomotive power supply according to claim 4, characterized in that the arc of said arc-shaped connection tube (7) is the same as the arc of said arc-shaped conductive column (3).
6. The continuous-cycle charging and discharging locomotive power supply according to claim 5, characterized in that a pressure sensor or a travel switch connected with the processor is arranged in the arc-shaped wiring tube (7) and used for feeding back the electrical connection state among the first wiring terminal (4), the second wiring terminal (5) and the third wiring terminal (6), and the processor controls the state of the circuit breaker according to the fed-back information.
7. The continuous cycle charging and discharging locomotive power supply according to claim 6, characterized in that both ends of said arc-shaped conductive pillar (3) are designed to be conical.
8. The continuous-cycle charging and discharging electric locomotive power supply according to claim 7, wherein the backup storage battery is fully charged in a normal power supply state of a mains supply to serve as a backup, and the types of the backup storage battery comprise an AC/DC rechargeable battery and a solar rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010699461.8A CN111775979B (en) | 2020-07-20 | 2020-07-20 | Continuous circulation charge-discharge locomotive power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010699461.8A CN111775979B (en) | 2020-07-20 | 2020-07-20 | Continuous circulation charge-discharge locomotive power supply |
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| Publication Number | Publication Date |
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| CN111775979A true CN111775979A (en) | 2020-10-16 |
| CN111775979B CN111775979B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010699461.8A Active CN111775979B (en) | 2020-07-20 | 2020-07-20 | Continuous circulation charge-discharge locomotive power supply |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202765998U (en) * | 2012-05-25 | 2013-03-06 | 广州坂本电气有限公司 | Emergency device for elevator blackout |
| US20140117757A1 (en) * | 2012-10-29 | 2014-05-01 | Philip Y.W. Tsui | Barrier Control System with Auxiliary Power Supply and Auxiliary Power Supply for Barrier Control System |
| CN107124033A (en) * | 2017-05-22 | 2017-09-01 | 合肥联信电源有限公司 | A kind of emergency power system for exporting switching free of discontinuities |
| CN206524681U (en) * | 2017-03-09 | 2017-09-26 | 四川阿海珐电气有限公司 | Emergency power supply |
| CN109450075A (en) * | 2018-12-11 | 2019-03-08 | 震惶科技（成都）有限公司 | A kind of ice chest refrigeration system based on intelligent UPS |
| CN209982165U (en) * | 2019-04-15 | 2020-01-21 | 许昌职业技术学院 | Unsmooth constant voltage power supply circuit that group battery is changeable |
-
2020
- 2020-07-20 CN CN202010699461.8A patent/CN111775979B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202765998U (en) * | 2012-05-25 | 2013-03-06 | 广州坂本电气有限公司 | Emergency device for elevator blackout |
| US20140117757A1 (en) * | 2012-10-29 | 2014-05-01 | Philip Y.W. Tsui | Barrier Control System with Auxiliary Power Supply and Auxiliary Power Supply for Barrier Control System |
| CN206524681U (en) * | 2017-03-09 | 2017-09-26 | 四川阿海珐电气有限公司 | Emergency power supply |
| CN107124033A (en) * | 2017-05-22 | 2017-09-01 | 合肥联信电源有限公司 | A kind of emergency power system for exporting switching free of discontinuities |
| CN109450075A (en) * | 2018-12-11 | 2019-03-08 | 震惶科技（成都）有限公司 | A kind of ice chest refrigeration system based on intelligent UPS |
| CN209982165U (en) * | 2019-04-15 | 2020-01-21 | 许昌职业技术学院 | Unsmooth constant voltage power supply circuit that group battery is changeable |
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| CN111775979B (en) | 2023-06-23 |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 78, shilinggang Road, Huaying City, Guang'an City, Sichuan Province Patentee after: Sichuan Jiahua Machinery Co.,Ltd. Country or region after: China Address before: No. 78, shilinggang Road, Huaying City, Guang'an City, Sichuan Province Patentee before: SICHUAN HUAYINGSHAN GUANGNENG GROUP JIAHUA MACHINERY CO.,LTD. Country or region before: China |