CN111725885A - Intelligent power-switching and 5G base station standby power supply system - Google Patents
Intelligent power-switching and 5G base station standby power supply system Download PDFInfo
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- CN111725885A CN111725885A CN202010712109.3A CN202010712109A CN111725885A CN 111725885 A CN111725885 A CN 111725885A CN 202010712109 A CN202010712109 A CN 202010712109A CN 111725885 A CN111725885 A CN 111725885A
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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
- H02J9/061—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 DC powered loads
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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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)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention relates to an intelligent power-switching and 5G base station standby power supply system which comprises a main control cabinet and a standby cabinet, wherein the main control cabinet supplies power to a base station, and the standby cabinet is started to supply power to the base station after power failure; the main control cabinet comprises a power failure detection unit and battery bins, wherein an incoming line connected with the power failure detection unit supplies power to the plurality of battery bins, a unidirectional DC/DC charger and a battery are arranged in each battery bin, each charger is connected with the battery in a one-to-one correspondence manner, and a first power supply interface is led out from two poles of the battery; the standby cabinet comprises a 48V output power supply and a 48V bus, each group of 48V output power supply connected with the 48V bus consists of a plurality of 48V output power supplies connected in parallel, a second power supply interface is led out from an output loop of the 48V output power supply, and the second power supply interface is connected with the main control cabinet through the first power supply interface. The advantages are that: the direct current power supply in the intelligent power exchange cabinet is utilized to supply power to the 5G base station with power failure conveniently in time, the structure is simplified, the control is convenient and fast, the reliability is high, and the cost is low.
Description
Technical Field
The invention relates to the field of direct-current power supplies, in particular to an intelligent power switching-and-5G base station standby power supply system.
Background
An intelligent power exchange cabinet for take-away guy and express delivery deliverers, also called a shared power exchange cabinet, a shared battery cabinet, a power exchange station and a battery exchange station, is used for battery replacement as the name suggests. In the past, when the electric vehicle is not powered, the first method is to find a place with a power socket to connect the electric vehicle with a power supply for charging. This kind of traditional mode of charging not only is not convenient still influence takeaway guo and express delivery deliverer's work efficiency very easily. After the battery changing cabinet is arranged, when a user uses the battery changing cabinet, the fully charged battery and the dead battery can be exchanged only by scanning or sweeping the face with a mobile phone. Therefore, the user does not need to be provided with a battery, the time of taking out the brother and express delivery and delivery personnel by the user is saved, the working efficiency is improved, and the use is also convenient and fast. At present, the overall arrangement of intelligence electricity changing cabinet is more and more popularized.
The 5G base station is a core device of the 5G network, realizes high-speed mobile communication, and has a wide base station layout range for providing wireless coverage.
The intelligent power exchange cabinet and the 5G base station are irrelevant, but when the 5G base station is powered off, the 5G base station needs to adopt the battery pack for standby power supply, the conversion mode is complex, the power supply structure of the base station is complex, and the cost is high. When the battery replacement cabinet is powered off, the battery in the cabinet is in an idle state.
In summary, the two have the common point that when the two are in the same area and are in a power-down state at the same time, the battery of the battery replacement cabinet can be fully utilized to provide a standby power supply for the 5G base station.
When the battery of the power exchange cabinet supplies power to the 5G base station, a bidirectional DC/DC conversion device is needed. The following two are conventionally used: one is a full-bridge mode, as shown in fig. 1, a double full-bridge symmetrical mode is adopted on two sides, and when the primary side works, a freewheeling diode of a secondary side MOS is used for rectification. When the secondary side works, the primary side freewheeling diode is used for rectification to realize a bidirectional reversible working mode. The other is a push-pull mode, as shown in fig. 2, a double push-pull symmetrical mode is adopted on two sides, and when the primary side works, a freewheeling diode of a secondary side MOS is used for rectification. When the secondary side works, the primary side freewheeling diode is used for rectification to realize a bidirectional reversible working mode. The two technologies are relatively complex to control and have high faults, and because the battery voltage is in a changing state along with the progress of the charging and discharging process at the battery side, the proportional relation of the primary side and the secondary side of the transformer is relatively complex, the control difficulty is increased, the cost is high, and the popularization and the application are not facilitated.
In the prior art, a power supply scheme of a power conversion cabinet and a 5G base station as shown in fig. 3 is adopted, and the power supply adopts a 220V input or 380V input voltage, 48V output and 3600W rectifying power supply to carry out total power supply. One power supply meets the requirement of full output charging of 4 bins, and corresponding power changing cabinets with 8 bins, 12 bins and more bins are correspondingly added with input power supplies. The output of the input power supply is in parallel connection, so that each power supply is required to have a parallel current sharing function. The charger is a bidirectional reversible power supply, when 220V or 380V is normal, the direct current bus is in a 48V output state, the charger is in a positive working state at the moment, the 48V is used for taking electricity and charging the battery in the bin through the charger. When the charger works reversely, the 48V is in a parallel connection state, so that the charger needs to have a parallel current sharing function when working reversely. Referring to fig. 4, the incoming line of 220V or 380V outputs 48V power after passing through the rectified power supply, so as to supply power to the base station. When the 220V or 380V incoming line is in power failure, the rectifying power supply cannot maintain the normal work of 48V electricity, at the moment, the battery supplies power, the bidirectional power supply stops the charging state, the bidirectional power supply is switched to the reverse power supply state, and the battery supplies energy to maintain the stability of the 48V electricity so as to ensure the normal work of the 5G base station.
The mode increases the control difficulty, has higher cost and is not beneficial to popularization and application.
Disclosure of Invention
The invention aims to provide an intelligent power conversion-5G base station standby power supply system, which utilizes a direct-current power supply in an intelligent power conversion cabinet to supply power to a power-down 5G base station in time and conveniently, is convenient to control and reduces the cost.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an intelligent power-switching and 5G base station standby power supply system comprises a main control cabinet and a standby cabinet, wherein the main control cabinet supplies power to a base station, and the standby cabinet is started to supply power to the base station after power failure;
the main control cabinet comprises a power failure detection unit, a first power supply interface, battery bins and a main controller, wherein incoming lines of AC220V or AC380V supply power for the plurality of battery bins, a unidirectional DC/DC charger and a battery are arranged in each battery bin, each unidirectional DC/DC charger is connected with the battery in a one-to-one correspondence mode to form a battery charging loop, the first power supply interface is led out from two poles of the battery, the positive pole and the negative pole of each battery respectively correspond to the first corresponding power supply interface, and the first power supply interface can be connected with the standby cabinet; the AC220V or the AC380V is connected with the power-down detection unit by incoming lines;
when the incoming line of the AC220V or the AC380V is powered down, the power down detection unit detects a power down signal, the main control cabinet is in a power down state, and the main controller starts the standby cabinet to supply power to the base station;
the standby cabinet comprises a controller, a 48V output power supply, a 48V bus and a second power supply interface, the 48V bus is connected with a plurality of groups of 48V output power supplies in parallel, each group of 48V output power supplies is composed of a plurality of 48V output power supplies connected in parallel, the second power supply interface is led out from an output loop of the 48V output power supplies, and the second power supply interface is connected with the main control cabinet through the first power supply interface.
And a battery for maintaining uninterrupted power supply during switching is connected to the 48V bus.
The first power supply interface and the second power supply interface are wiring terminals.
The power failure detection unit is a relay, and when the relay is switched from the attraction state to the standby state, the contact state changes, and a power failure signal is provided for the main controller.
The 48V output power supply is a unidirectional DC/DC power supply, and each 48V output power supply input end corresponds to one or more than two batteries.
And a diode is connected to the positive input end of each 48V output power supply.
The main controller comprises an all-solid-state microcomputer, an LCD touch screen, a 5G communication module and a face recognition processing unit, the all-solid-state microcomputer is connected with the LCD touch screen, the 5G communication module and the face recognition processing unit, and the all-solid-state microcomputer is connected with the controller of the standby cabinet through an RS-485 interface and a Profibus-DP bus.
The controller comprises an embedded microcomputer, a touch screen and a 5G wireless communication module, the embedded microcomputer is connected with the touch screen and the 5G wireless communication module, and the embedded microcomputer is connected with the main controller of the main control cabinet through an RS-485 interface and a Profibus-DP bus.
The main control cabinet is a power exchange cabinet.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention utilizes the direct current power supply in the intelligent power exchange cabinet to supply power to the 5G base station with power failure in time and conveniently, and the innovative method has obvious practical application effect and has practical significance for improving the working reliability of the 5G base station;
2) the invention adopts a unidirectional DC/DC charger and a unidirectional DC/DC power supply to replace a full-bridge type and push-pull type conversion device with a transformer. When the charging state is in, the unidirectional DC/DC charger works, the unidirectional DC/DC power supply is in a standby state, the working state is controlled by the power supply/charger enabling position or communication, and the power supply/charger is in a normal working state.
When in the battery powered state, the unidirectional DC/DC power supply begins to operate, while the unidirectional DC/DC charger is in a standby state. The working state is controlled by the power supply/charger enabling bit or communication, and at the moment, the battery is in a battery power supply state.
The invention greatly simplifies the structure of the device, is convenient and fast to control, has high reliability and low cost, and has practical and popularization values.
3) Based on the idea of providing the 5G standby power supply, the invention innovatively designs a power supply implementation scheme of a main control cabinet and two standby cabinets.
Master control refuses: when the main control power supply rejection power supply is powered off, a power-off detection unit K1 sends out a standby power supply operation starting signal, and the standby power supply works.
A standby cabinet: when the power supply of the base station is cut off (the main control cabinet and the base station adopt the same area power supply) and the main control cabinet also cuts off the power at the same time, the main control cabinet stops replacing the power when detecting that the power supply falls off, and the main control sends out an instruction, the standby cabinet starts working, in order to prevent the phenomenon of short power failure of 48V during switching, an uninterrupted battery during maintaining switching is additionally arranged on a 48V bus, so that the 48V can be in an uninterrupted working state during system switching. The standby cabinet provides 48V output power, is powered by one battery, and is switched to another battery for power supply by the relay when the power of the battery for supplying power is reduced to be insufficient to maintain the power supply requirement. Each power supply may be powered by two batteries. Therefore, the power efficiency is obviously improved, the cost is saved, the space is compressed, the size is reduced, and the practicability of the standby power supply is improved.
4) The invention adopts the advanced technologies of all-solid-state microcomputer, field bus, face recognition, 5G mobile Internet of things and the like, improves the intelligent measurement and control level, and can realize the capabilities of intelligent control, online monitoring and predictive maintenance.
5) The power exchange cabinet is used as a main control cabinet, the main control cabinet is adopted to provide power for the 5G base station, normal use of the power exchange cabinet is not affected, and the purpose of one cabinet with multiple purposes is achieved. Meanwhile, in areas without 5G base stations, the standby cabinet can be not installed, the normal use of the power exchange cabinet is not affected, the mode is simple, and the use is flexible.
Drawings
Fig. 1 is a schematic diagram of a bi-directional DC/DC full bridge conversion.
Fig. 2 is a schematic diagram of a bi-directional DC/DC push-pull conversion.
Fig. 3 is a schematic diagram of a power supply of a conventional power change cabinet and a 5G base station.
Fig. 4 is a schematic diagram of a bi-directional power supply.
Fig. 5 is a schematic diagram of the master control cabinet.
Fig. 6 is a first schematic diagram of the standby cabinet.
Fig. 7 is a second schematic diagram of the back-up cabinet.
Fig. 8 is a schematic diagram of the spare cabinet three.
Fig. 9 is a schematic diagram of the main controller.
Fig. 10 is a schematic diagram of the controller.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 5-10, an intelligent power-switching and 5G base station standby power supply system includes a main control cabinet and a standby cabinet, wherein the main control cabinet supplies power to a base station, and the standby cabinet is started to supply power to the base station after power failure;
the main control cabinet comprises a power failure detection unit, a first power supply interface, battery bins and a main controller, wherein incoming lines of AC220V or AC380V supply power for the plurality of battery bins, a unidirectional DC/DC charger and a battery are arranged in each battery bin, each unidirectional DC/DC charger is connected with the battery in a one-to-one correspondence mode to form a battery charging loop, the first power supply interface is led out from two poles of the battery, the positive pole and the negative pole of each battery respectively correspond to the first corresponding power supply interface, and the first power supply interface can be connected with the standby cabinet; the AC220V or the AC380V is connected with the power-down detection unit by incoming lines;
the standby cabinet comprises a controller, a 48V output power supply, a 48V bus and a second power supply interface, wherein the 48V bus is connected with a plurality of groups of 48V output power supplies in parallel, each group of 48V output power supplies is composed of a plurality of 48V output power supplies connected in parallel, the second power supply interface is led out from an output loop of the 48V output power supplies, the second power supply interface is connected with the main control cabinet through the first power supply interface, a battery of the main control cabinet provides electric energy for the 48V output power supplies, and then the 48V bus provides 48V power for the base station. Communication interfaces are reserved between the main control cabinet and the standby cabinet and used for the mutual communication between the main controller and the controller.
When the AC220V or the AC380V incoming line normally works, the unidirectional DC/DC charger starts to work, the 48V output power supply stops working to be in a standby working state, and at the moment, the unidirectional DC/DC charger takes electricity from the 48V bus to charge the lithium battery.
When the incoming line of the AC220V or the AC380V is powered down, the power down detection unit detects a power down signal, the main control cabinet is in a power down state, and the main controller starts the standby cabinet to supply power to the base station; at this time, the unidirectional DC/DC charger stops operating and is in a standby operating state. And when the unidirectional DC/DC charger stops working, the 48V output power supply is started, the DC/DC power supply takes electricity from the battery side at the moment, and outputs 48V electricity to the 48V bus to supply power to the main control cabinet and the 5G base station.
The 48V bus is connected with a battery for maintaining uninterrupted power supply during switching, and the phenomenon of short power failure of 48V during switching is prevented.
Example one
Referring to fig. 4-6, the main control cabinet AC220V or AC380V is connected with a relay, the incoming lines respectively supply power to 12 battery compartments, each battery compartment is internally provided with a charger and a battery, each charger is connected with the battery in a one-to-one correspondence manner to form a battery charging loop, connecting terminals are led out from two poles of the battery, the positive pole and the negative pole of each battery respectively correspond to corresponding connecting terminals, and the connecting terminals can be connected with the standby cabinet.
Correspondingly, the standby cabinet is also provided with a connecting terminal corresponding to the main cabinet, so that the battery on the main control cabinet can be reliably connected with the unidirectional DC-DC power supply in the standby cabinet. A diode is added to the positive input end of each power supply of the standby cabinet to prevent the power supply from being burnt out and the normal work of the standby cabinet from being influenced due to the reverse connection of the input ends. All power outputs in the standby cabinet are connected in parallel to ensure certain output power and the requirement of input power of a base station power supply.
When the power supply of the base station is cut off (the main control cabinet and the base station adopt the same area power supply) and the main control cabinet also cuts off the power at the same time, the main control cabinet stops replacing the power when detecting that the power supply falls off, and the main control sends out an instruction, the standby cabinet starts working, in order to prevent the phenomenon of short power failure of 48V during switching, an uninterrupted battery during maintaining switching is additionally arranged on a 48V bus, so that the 48V can be in an uninterrupted working state during system switching. The power supply of the standby cabinet consists of a plurality of unidirectional DC/DC power supplies, each power supply input corresponds to one battery in the main control cabinet, the power output of the standby cabinet is 48V, and all power outputs are connected in parallel to provide power required by the base station. The power input is provided by the joint of the reserved power supply interface of the main control cabinet and the standby cabinet, and the working and standby states of the power are controlled by the main controller.
Example two
Referring to fig. 4, 5, and 7, the difference from the first embodiment is that the standby cabinet DC/DC power supply does not adopt a mode corresponding to batteries one by one, but adopts a power supply mode in which two batteries correspond to one power supply, and through calculation, the power supply of the 5G base station can meet the requirement by adopting 6 DC/DC power supplies, so in the 12-bin main control cabinet, a mode of supplying power to one power supply by two batteries is adopted, and if an 18-bin main control cabinet or more bins are adopted, a mode of supplying power to one power supply by 3 batteries can be adopted, and so on, a large amount of cost is saved on the premise of ensuring the functions in this embodiment. When the power is down, taking one of the standby cabinet power supplies as an example: the standby cabinet power supply starts to work, at the moment, one battery in the main control cabinet supplies power to the standby cabinet power supply, and when the power of the power supply battery is reduced to the power supply requirement which can not be maintained, the standby cabinet power supply is switched to another battery for supplying power.
When the power supply of the base station is cut off (the main control cabinet and the base station adopt the same regional power supply for power supply), the main control cabinet also cuts off the power supply at the same time, the main control cabinet stops changing the power when detecting that the power supply falls off, the main control sends out an instruction, the standby cabinet starts working, at the moment, every two batteries correspond to one unidirectional DC-DC power supply to provide 48V power for supplying power to the base station, and the power provided by the parallel connection of the 6 unidirectional DC-DC power supplies can meet the requirement of the standby power supply of the base station through calculation. The operation mode takes a single power supply providing 48V output as an example: the power supply is carried out by one battery, and when the battery power for supplying energy is reduced to be insufficient to maintain the power supply requirement, the relay is switched to the other battery for supplying power. Each power supply may be powered by two batteries. Therefore, the power efficiency is obviously improved, the cost is saved, the space is compressed, the size is reduced, and the practicability of the standby power supply is improved.
The second embodiment saves half of the power supply compared with the first embodiment, greatly reduces the cost and fully utilizes the use efficiency of the power supply.
Referring to fig. 8, in addition, in the second embodiment, in a mode that two batteries are used for supplying power to one 48V output power supply, electronic switches are installed on two power supply loops for switching power supply lines of the batteries, so that regulation and control are convenient.
Claims (9)
1. An intelligent power-switching and 5G base station standby power supply system is characterized by comprising a main control cabinet and a standby cabinet, wherein the main control cabinet supplies power to a base station, and the standby cabinet is started to supply power to the base station after power failure;
the main control cabinet comprises a power failure detection unit, a first power supply interface, battery bins and a main controller, wherein incoming lines of AC220V or AC380V supply power for the plurality of battery bins, a unidirectional DC/DC charger and a battery are arranged in each battery bin, each unidirectional DC/DC charger is connected with the battery in a one-to-one correspondence mode to form a battery charging loop, the first power supply interface is led out from two poles of the battery, the positive pole and the negative pole of each battery respectively correspond to the first corresponding power supply interface, and the first power supply interface can be connected with the standby cabinet; the AC220V or the AC380V is connected with the power-down detection unit by incoming lines;
when the incoming line of the AC220V or the AC380V is powered down, the power down detection unit detects a power down signal, the main control cabinet is in a power down state, and the main controller starts the standby cabinet to supply power to the base station;
the standby cabinet comprises a controller, a 48V output power supply, a 48V bus and a second power supply interface, wherein the 48V bus is connected with a plurality of groups of 48V output power supplies in parallel, each group of 48V output power supplies is composed of a plurality of 48V output power supplies connected in parallel, the second power supply interface is led out from an output loop of the 48V output power supplies, the second power supply interface is connected with the main control cabinet through the first power supply interface, a battery of the main control cabinet provides electric energy for the 48V output power supplies, and then the 48V bus provides 48V power for the base station.
2. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein a battery for maintaining uninterrupted power supply during switching is connected to the 48V bus.
3. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein the first power supply interface and the second power supply interface are wiring terminals.
4. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein the power failure detection unit is a relay, and when the relay is switched from the attraction state to the standby state, the contact state changes, and a power failure signal is provided to the main controller.
5. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein the 48V output power supply is a unidirectional DC/DC power supply, and each 48V output power supply input terminal corresponds to one or two batteries.
6. The system of claim 1, wherein a diode is connected to a positive input terminal of each 48V output power supply.
7. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein the main controller comprises an all-solid-state microcomputer, an LCD touch screen, a 5G communication module and a face recognition processing unit, the all-solid-state microcomputer is connected with the LCD touch screen, the 5G communication module and the face recognition processing unit, and the all-solid-state microcomputer is connected with the controller of the standby cabinet through an RS-485 interface and a Profibus-DP bus.
8. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein the controller comprises an embedded microcomputer, a touch screen and a 5G wireless communication module, the embedded microcomputer is connected with the touch screen and the 5G wireless communication module, and the embedded microcomputer is connected with a main controller of the main control cabinet through an RS-485 interface and a Profibus-DP bus.
9. The intelligent power conversion-and-5G base station standby power supply system as claimed in claim 1, wherein the main control cabinet is a power conversion cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712109.3A CN111725885A (en) | 2020-07-22 | 2020-07-22 | Intelligent power-switching and 5G base station standby power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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