CN111740462A - Auxiliary power supply device for new energy mobile base station and power supply method thereof - Google Patents
Auxiliary power supply device for new energy mobile base station and power supply method thereof Download PDFInfo
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- CN111740462A CN111740462A CN202010610945.0A CN202010610945A CN111740462A CN 111740462 A CN111740462 A CN 111740462A CN 202010610945 A CN202010610945 A CN 202010610945A CN 111740462 A CN111740462 A CN 111740462A
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- power supply
- auxiliary power
- new energy
- supply device
- base station
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an auxiliary power supply device for a new energy mobile base station and a power supply method thereof. Has the advantages that: the voltage sensor is additionally arranged on the auxiliary power supply device for the new energy mobile base station, the voltage sensor can detect the voltages at two ends of the auxiliary power supply device in real time, when the voltage of the auxiliary power supply device is lower, the electric equipment can be supplied with power through the commercial power supply system, the auxiliary power supply device is prevented from being overdischarged, the auxiliary power supply device is effectively protected, the service life of the auxiliary power supply device is prolonged, and the practicability is good.
Description
Technical Field
The invention relates to the field of new energy mobile base stations, in particular to an auxiliary power supply device for a new energy mobile base station and a power supply method thereof.
Background
At present, in view of the increasing severity of the problems of environmental deterioration and resource shortage, the vigorous development of clean new energy sources such as wind energy and solar energy has become a necessary trend for future energy use, such as wind-solar hybrid power generation technology developed according to the complementary characteristics of solar energy and wind energy in different seasons and time. However, when a new energy mobile base station is established, due to the uncertainty of resources, such as the instability of wind energy, the intermittence of solar energy, and the like, and due to a plurality of factors such as unreasonable capacity allocation in the base station construction process, the problem of imbalance between power generation and power utilization load occurs. The wind power and the photovoltaic system can stably supply power only by storing energy through the storage battery, but the daily generated energy is greatly influenced by weather, so that the storage battery of the system is in a power-shortage state for a long time. In addition, since the auxiliary power supply of most power supply devices of the mobile base station is taken from the storage battery, for this reason, in the case of power shortage of the storage battery, the supply of power to the auxiliary power supply undoubtedly burdens the storage battery, so that the storage battery is over-discharged; moreover, the battery can be irreversibly damaged due to the overdischarge state for a long time, and the service life of the battery is shortened. In view of the above circumstances, an auxiliary power supply apparatus for a new energy mobile base station and a power supply method thereof may be designed to solve the above problems.
Disclosure of Invention
The present invention is directed to solve the above problems and to provide an auxiliary power supply device for a new energy mobile base station and a power supply method thereof.
The invention realizes the purpose through the following technical scheme:
the utility model provides an auxiliary power supply device for new forms of energy mobile base station, includes auxiliary power supply device, auxiliary power supply device electricity is connected with new forms of energy power supply system, voltage sensor and electromagnetic circuit breaker two, the voltage sensor electricity is connected with the treater, the treater electricity is connected with the host computer, the host computer electricity is connected with electromagnetic circuit breaker two and electromagnetic circuit breaker one, electromagnetic circuit breaker one electricity is connected with consumer and commercial power supply system.
The new energy power supply system comprises hydroelectric power generation, wind power generation, thermal power generation and solar power generation.
The solar power generation device comprises a solar panel, a junction box, an inverter and a solar controller, wherein the solar controller is electrically connected with the solar panel, the junction box and the inverter.
The auxiliary power supply device comprises a box body, a stand column fixedly arranged at the bottom of the box body, a box door hinged to the side face of the box body and a device main body fixedly arranged in the box body.
The device comprises a device body and is characterized in that a mounting frame is arranged outside the device body and fixedly connected with the inner wall of the box body.
The lower surface of the box body is provided with a bottom vent hole, the side face of the box body is provided with a side vent hole, and the side vent hole is an inclined hole.
The middle part of the front side of the box door is inlaid with an observation window, and the edge of the middle part of the front side of the box door is provided with a handle.
Wherein, the side ventilation hole with the end ventilation hole is the through-hole, and quantity has a plurality ofly, and evenly distributed is in on box both sides face and the bottom surface.
A power supply method for an auxiliary power supply device of a new energy mobile base station comprises the following steps:
(1) supplying power to the auxiliary power supply device through the new energy power supply system;
(2) detecting the output voltage of the auxiliary power supply device in real time through the voltage sensor and transmitting the detection data to the processor in real time;
(3) the processor analyzes and processes the data information transmitted by the voltage sensor and transmits the processed data information to the upper computer;
(4) the host computer will the voltage value that the treater transmitted compares rather than the standard value of inside storage, and when the voltage value that detects was less than the standard value, the host computer control two disconnection of electromagnetic circuit breaker auxiliary power supply device with the circuit connection of consumer, simultaneous control first switch-on of electromagnetic circuit breaker the commercial power supply system with the circuit connection of consumer.
Wherein, in step (4), work as the upper computer control two disconnections of electromagnetic circuit breaker auxiliary power supply device with after the circuit connection of consumer, new forms of energy power supply system continues to do auxiliary power supply device charges, work as voltage sensor detects behind the voltage boost to the standard value at auxiliary power supply device both ends, the upper computer control one disconnection of electromagnetic circuit breaker commercial power supply system with the circuit connection of consumer, simultaneous control two switches on of electromagnetic circuit breaker auxiliary power supply device with the circuit connection of consumer.
Has the advantages that: the voltage sensor is additionally arranged on the auxiliary power supply device for the new energy mobile base station, the voltage sensor can detect the voltages at two ends of the auxiliary power supply device in real time, when the voltage of the auxiliary power supply device is lower, the electric equipment can be supplied with power through the commercial power supply system, the auxiliary power supply device is prevented from being overdischarged, the auxiliary power supply device is effectively protected, the service life of the auxiliary power supply device is prolonged, and the practicability is good.
Drawings
Fig. 1 is a schematic structural diagram of an auxiliary power supply device for a new energy mobile base station according to the present invention;
fig. 2 is a schematic diagram of an auxiliary power supply device for a new energy mobile base station according to the present invention;
fig. 3 is an installation schematic diagram of an auxiliary power supply device for a new energy mobile base station according to the present invention;
fig. 4 is a control flowchart of a power supply method for an auxiliary power supply device of a new energy mobile base station according to the present invention.
The reference numerals are explained below:
1. a new energy power supply system; 2. an auxiliary power supply device; 3. a voltage sensor; 4. a processor; 5. an upper computer; 6. an electricity-consuming device; 7. a second electromagnetic circuit breaker; 8. a first electromagnetic circuit breaker; 9. a mains supply system; 10. hydroelectric power generation; 11. thermal power generation; 12. wind power generation; 13. a solar panel; 14. a combiner box; 15. an inverter; 16. a solar controller; 17. a box body; 18. a device main body; 19. a box door; 20. an observation window; 21. a handle; 22. a side vent; 23. a bottom vent; 24. a column; 25. and (7) mounting frames.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
the first embodiment is as follows: as shown in fig. 1-4, an auxiliary power supply device for new forms of energy mobile base station, including auxiliary power supply device 2, auxiliary power supply device 2 electricity is connected with new forms of energy power supply system 1, voltage sensor 3 and two 7 of electromagnetic circuit breaker, voltage sensor 3 is used for detecting the voltage at 2 both ends of auxiliary power supply device, two 7 of electromagnetic circuit breaker are used for control auxiliary power supply device 2 and consumer 6's circuit connection, new forms of energy power supply system 1 is used for doing auxiliary power supply device 2 charges, voltage sensor 3 electricity is connected with treater 4, treater 4 is used for handling the voltage signal that voltage sensor 3 detected, treater 4 electricity is connected with host computer 5, host computer 5 electricity is connected with two 7 of electromagnetic circuit breaker and one 8 of electromagnetic circuit breaker, one 8 of electromagnetic circuit breaker is electrically connected with consumer 6 and commercial power supply system 9 consumer 6 includes basic Various electronic devices within the station.
In the present embodiment, the new energy power supply system 1 includes a hydroelectric power generation 10, a wind power generation 12, a thermal power generation 11, and a solar power generation.
In the present embodiment, the solar power generation includes a solar panel 13, a combiner box 14, an inverter 15, and a solar controller 16, and the solar controller 16 is electrically connected to the solar panel 13, the combiner box 14, and the inverter 15.
In this embodiment, the auxiliary power supply device 2 includes a box 17, a pillar 24 fixedly installed at the bottom of the box 17, a door 19 hinged to a side of the box 17, and a device main body 18 fixedly installed inside the box 17.
In this embodiment, a mounting rack 25 is disposed outside the device main body 18, and the mounting rack 25 is fixedly connected to the inner wall of the box 17.
In this embodiment, a bottom vent hole 23 is provided on the lower surface of the case 17, a side vent hole 22 is provided on the side surface of the case 17, and the side vent hole 22 is an inclined hole.
In this embodiment, the middle of the front surface of the box door 19 is embedded with an observation window 20, and the edge of the middle of the front surface of the box door 19 is provided with a handle 21.
In this embodiment, the side vent holes 22 and the bottom vent holes 23 are all through holes, and the number of the side vent holes and the bottom vent holes is multiple and is uniformly distributed on the two side surfaces and the bottom surface of the box 17.
A power supply method for an auxiliary power supply device of a new energy mobile base station comprises the following steps:
(1) supplying power to the auxiliary power supply device 2 through the new energy power supply system 1;
(2) detecting the output voltage of the auxiliary power supply device 2 in real time through the voltage sensor 3 and transmitting the detection data to the processor 4 in real time;
(3) the processor 4 analyzes and processes the data information transmitted by the voltage sensor 3 and transmits the processed data information to the upper computer 5;
(4) host computer 5 will the voltage value that treater 4 transmitted compares rather than the standard value of inside storage, and when the voltage value that detects was less than the standard value, host computer 5 control two 7 breaks of electromagnetic circuit breaker auxiliary power supply unit 2 with the circuit connection of consumer 6, simultaneous control first 8 switchings of electromagnetic circuit breaker commercial power supply system 9 with the circuit connection of consumer 6.
In this embodiment, in step (4), work as host computer 5 control two 7 disconnections of electromagnetic circuit breaker auxiliary power supply unit 2 with after the circuit connection of consumer 6, new forms of energy power supply system 1 continues to do auxiliary power supply unit 2 charges, works as voltage sensor 3 detects after the voltage at auxiliary power supply unit 2 both ends risees to the standard value, host computer 5 control one 8 disconnections of electromagnetic circuit breaker commercial power supply system 9 with consumer 6's circuit connection, simultaneous control two 7 switchings of electromagnetic circuit breaker auxiliary power supply unit 2 with consumer 6's circuit connection.
Example two: the present embodiment is different from the first embodiment only in that the utility power supply system 9 is directly connected to the auxiliary power supply device 2 and is no longer electrically connected to the electric equipment 6, and the electric equipment 6 is only supplied with power through the auxiliary power supply device 2, so that the design can save the circuit laying between the utility power supply system 9 and the electric equipment 6, save the cost, and have good practicability.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An auxiliary power supply device for a new energy mobile base station, characterized in that: including auxiliary power supply unit (2), auxiliary power supply unit (2) electricity is connected with new forms of energy power supply system (1), voltage sensor (3) and electromagnetic circuit breaker two (7), voltage sensor (3) electricity is connected with treater (4), treater (4) electricity is connected with host computer (5), host computer (5) electricity is connected with electromagnetic circuit breaker two (7) and electromagnetic circuit breaker (8), electromagnetic circuit breaker (8) electricity is connected with consumer (6) and commercial power supply system (9).
2. The auxiliary power supply apparatus for a new energy mobile base station according to claim 1, wherein: the new energy power supply system (1) comprises a hydroelectric power generation system (10), a wind power generation system (12), a thermal power generation system (11) and a solar power generation system.
3. The auxiliary power supply apparatus for a new energy mobile base station according to claim 2, wherein: the solar power generation device comprises a solar panel (13), a junction box (14), an inverter (15) and a solar controller (16), wherein the solar controller (16) is electrically connected with the solar panel (13), the junction box (14) and the inverter (15).
4. The auxiliary power supply apparatus for a new energy mobile base station according to claim 1, wherein: the auxiliary power supply device (2) comprises a box body (17), a stand column (24) fixedly installed at the bottom of the box body (17), a box door (19) hinged to the side face of the box body (17) and a device main body (18) fixedly installed inside the box body (17).
5. The auxiliary power supply device for the new energy mobile base station according to claim 4, wherein: the device is characterized in that a mounting rack (25) is arranged outside the device main body (18), and the mounting rack (25) is fixedly connected with the inner wall of the box body (17).
6. The auxiliary power supply device for the new energy mobile base station according to claim 4, wherein: the lower surface of the box body (17) is provided with a bottom vent hole (23), the side face of the box body (17) is provided with a side vent hole (22), and the side vent hole (22) is an inclined hole.
7. The auxiliary power supply device for the new energy mobile base station according to claim 4, wherein: an observation window (20) is inlaid in the middle of the front face of the box door (19), and a handle (21) is arranged at the edge of the middle of the front face of the box door (19).
8. The auxiliary power supply apparatus for a new energy mobile base station according to claim 6, wherein: side ventilation hole (22) with end ventilation hole (23) are the through-hole, and quantity has a plurality ofly, and evenly distributed is in on box (17) both sides face and the bottom surface.
9. A power supply method for an auxiliary power supply device of a new energy mobile base station is characterized by comprising the following steps:
(1) the auxiliary power supply device (2) is powered through the new energy power supply system (1);
(2) detecting the output voltage of the auxiliary power supply device (2) in real time through the voltage sensor (3) and transmitting the detection data to the processor (4) in real time;
(3) the processor (4) analyzes and processes the data information transmitted by the voltage sensor (3) and transmits the processed data information to the upper computer (5);
(4) host computer (5) will the voltage value that treater (4) transmitted compares rather than the standard value of inside storage, and when the voltage value who detects was less than the standard value, host computer (5) control two (7) disconnections of electromagnetic circuit breaker auxiliary power supply unit (2) with the circuit connection of consumer (6), simultaneous control first (8) switch-on of electromagnetic circuit breaker commercial power supply system (9) with the circuit connection of consumer (6).
10. The method according to claim 9, wherein the method further comprises: in step 4, work as host computer (5) control two (7) disconnections of electromagnetic circuit breaker auxiliary power supply unit (2) with the circuit connection back of consumer (6), new forms of energy power supply system (1) continues to do auxiliary power supply unit (2) charge, works as voltage sensor (3) detect the voltage at auxiliary power supply unit (2) both ends risees to the standard value after, host computer (5) control one (8) disconnection of electromagnetic circuit breaker commercial power supply system (9) with the circuit connection of consumer (6), simultaneous control two (7) switches on of electromagnetic circuit breaker auxiliary power supply unit (2) with the circuit connection of consumer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610945.0A CN111740462A (en) | 2020-06-30 | 2020-06-30 | Auxiliary power supply device for new energy mobile base station and power supply method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610945.0A CN111740462A (en) | 2020-06-30 | 2020-06-30 | Auxiliary power supply device for new energy mobile base station and power supply method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111740462A true CN111740462A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010610945.0A Withdrawn CN111740462A (en) | 2020-06-30 | 2020-06-30 | Auxiliary power supply device for new energy mobile base station and power supply method thereof |
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| CN (1) | CN111740462A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000116007A (en) * | 1998-09-29 | 2000-04-21 | Nippon Electric Ind Co Ltd | Hybrid wind turbine power generating system provided with solar battery |
| CN202261096U (en) * | 2011-09-19 | 2012-05-30 | 平顶山市蓝峰科技实业有限公司 | Solar power supply system of communication base station |
| CN103066679A (en) * | 2013-01-30 | 2013-04-24 | 昆明理工大学 | Universal communication base station solar and wind energy centralized power supply system and control method thereof |
| CN203839772U (en) * | 2014-04-25 | 2014-09-17 | 国家电网公司 | Outdoor access device terminal box capable of independent power supply |
| CN110416899A (en) * | 2019-08-12 | 2019-11-05 | 合肥通用电源设备有限公司 | A kind of ventilation rainproof formula power box |
| CN210157522U (en) * | 2019-06-13 | 2020-03-17 | 河南光华信息电子工程监理有限公司 | Public safety video monitoring front-end equipment box |
| CN111262382A (en) * | 2020-03-20 | 2020-06-09 | 杭州伟洛科技有限公司 | Motor shock attenuation silencing device based on electromagnetic induction principle |
-
2020
- 2020-06-30 CN CN202010610945.0A patent/CN111740462A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000116007A (en) * | 1998-09-29 | 2000-04-21 | Nippon Electric Ind Co Ltd | Hybrid wind turbine power generating system provided with solar battery |
| CN202261096U (en) * | 2011-09-19 | 2012-05-30 | 平顶山市蓝峰科技实业有限公司 | Solar power supply system of communication base station |
| CN103066679A (en) * | 2013-01-30 | 2013-04-24 | 昆明理工大学 | Universal communication base station solar and wind energy centralized power supply system and control method thereof |
| CN203839772U (en) * | 2014-04-25 | 2014-09-17 | 国家电网公司 | Outdoor access device terminal box capable of independent power supply |
| CN210157522U (en) * | 2019-06-13 | 2020-03-17 | 河南光华信息电子工程监理有限公司 | Public safety video monitoring front-end equipment box |
| CN110416899A (en) * | 2019-08-12 | 2019-11-05 | 合肥通用电源设备有限公司 | A kind of ventilation rainproof formula power box |
| CN111262382A (en) * | 2020-03-20 | 2020-06-09 | 杭州伟洛科技有限公司 | Motor shock attenuation silencing device based on electromagnetic induction principle |
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Application publication date: 20201002 |
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