CN108336893B - Power supply machine box - Google Patents
Power supply machine box Download PDFInfo
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- CN108336893B CN108336893B CN201810157216.7A CN201810157216A CN108336893B CN 108336893 B CN108336893 B CN 108336893B CN 201810157216 A CN201810157216 A CN 201810157216A CN 108336893 B CN108336893 B CN 108336893B
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention provides a power supply cabinet, which solves the problems of non-uniform equipment installation mode and complex wiring caused by the arrangement of various types of power supplies for different types of communication equipment in the prior art. The power supply case provided by the invention comprises: a housing of the chassis; the mounting tray can slide in the case shell and comprises a universal mounting hole; the voltage output module is arranged on the mounting tray and used for outputting voltage with adjustable mode; and the main power supply is arranged in the casing of the machine case and used for providing input voltage for the voltage output module.
Description
Technical Field
The invention relates to the technical field of electromechanical equipment, in particular to a power supply case.
Background
At present, the production and the manufacture of the small-sized direct current communication equipment have no uniform structural standard, and products of equipment manufacturers are different in appearance size, installation mode and working voltage. Therefore, in the actual project application, power supplies of various types need to be arranged in the cabinet, the equipment installation modes are not uniform, the system wiring is complex, unreliable factors are increased, and inconvenience is brought to the construction, the manufacturing cost and the maintenance of the project.
Disclosure of Invention
In view of this, embodiments of the present invention provide a power supply cabinet to solve the problems of non-uniform equipment installation manner and complicated wiring caused by the cabinet in the prior art that a plurality of types of power supplies are arranged for communication equipment of different types.
An embodiment of the present invention provides a power supply cabinet, including: a housing of the chassis; the mounting tray can slide in the case shell and comprises a universal mounting hole; the voltage output module is arranged on the mounting tray and used for outputting voltage with adjustable mode; and the main power supply is arranged in the case shell and used for providing input voltage for the voltage output module.
In one embodiment, the installation tray comprises a first tray unit and a plurality of second tray units, the main power supply is installed on the first tray unit, each second tray unit in the plurality of second tray units is provided with a voltage output module, the power supply case further comprises a PCB arranged inside the case shell, the first tray unit and the plurality of second tray units are electrically connected with the PCB through connectors respectively, the PCB comprises a power bus, and the main power supply provides input voltage for the voltage output modules through the power bus.
In one embodiment, the voltage output module comprises a micro control unit, and a power chip, a voltage regulating key and a display nixie tube which are respectively connected to the micro control unit, wherein the micro control unit automatically identifies the selected voltage output mode according to the pressing mode of the voltage regulating key, controls the power chip to output voltage according to the identified voltage output mode, and controls the display nixie tube to display the currently selected voltage output value.
In one embodiment, the voltage output module further comprises an analog switch, the micro control unit regulates and controls the power supply chip to output voltage according to the selected voltage output mode through the analog switch, and in the regulation and control process, the micro control unit controls the display nixie tube to display the currently selected voltage output value in a flashing mode; when the regulation and control are completed, the micro control unit controls the display nixie tube to display the currently selected voltage output value in a normal mode and collects the currently output actual voltage value of the power supply chip, if the currently output actual voltage value is equal to the currently selected voltage output value, the micro control unit controls the power supply chip to start supplying power outwards, and if the currently output actual voltage value is not equal to the currently selected voltage output value, the micro control unit controls the power supply chip not to supply power outwards and generates alarm information.
In one embodiment, when the power chip starts to supply power to the outside, the micro control unit is further used for locking the voltage regulating button when the power chip starts to supply power to the outside.
In one embodiment, the power supply chassis further comprises a main controller integrated on the PCB, the main controller comprises a power monitoring module, a network module and an internal communication bus, the micro control unit is further configured to collect and process voltage and current data of the communication device on the second tray unit corresponding to the micro control unit during operation, and transmit the collected raw data and the processed data to the power monitoring module through the internal communication bus, the power monitoring module is configured to transmit the raw data and the processed data transmitted from the micro control unit to the remote server through the network module, and separately establish a power utilization condition database for the communication device on the second tray unit corresponding to the micro control unit according to the data returned by the remote server.
In one embodiment, the power supply monitoring module is further configured to compare the raw data and the processing data transmitted by the micro control unit with data in the power consumption condition database corresponding to the raw data and the processing data, judge the working state of the voltage output module corresponding to the micro control unit according to the comparison result, upload the working state to the remote server, and send a corresponding instruction to the micro control unit according to the judgment result.
In one embodiment, the processing data includes abnormal frequency data obtained after fast fourier transform processing and mean value data obtained after mean value processing; the data in the used electricity condition database comprises working voltage data and current data of communication equipment in full load, flat peak and standby states and abnormal frequency data obtained after fast Fourier transform processing when the communication equipment works abnormally; the instructions include instructions to control the voltage output module to continue with the voltage output, to start the voltage output, and to stop the voltage output.
In one embodiment, the power supply chassis further comprises a main controller and a fault recording device, the main controller comprises a power quality analysis module and an internal communication bus, the main power supply comprises a first power supply and a second power supply, the fault recording device is used for respectively collecting input voltages of the first power supply and the second power supply to obtain respective time domain data of two power supply lines, respectively performing fast fourier transform processing on the two collected input voltages to obtain respective frequency domain data of the two power supply lines, and packaging the time domain data, the frequency domain data and the time nodes to be transmitted to the main controller through the internal communication bus; the electric energy quality analysis module selects a better power supply circuit by calculating time domain data and frequency domain data transmitted by the fault recording device and controls the main power supply to be seamlessly switched to the better power supply circuit to work.
In one embodiment, the main controller further comprises a network module, the main power supply further comprises a standby battery, and when the power quality analysis module calculates that the current working power supply line is superior to the standby power supply line, the main power supply is controlled not to be switched; when the electric energy quality analysis module calculates that the standby power supply line is superior to the current working power supply line, firstly controlling the standby power supply line to be conducted, and then controlling the current working power supply line to be disconnected; when the power quality analysis module calculates that the current working power supply line and the standby power supply line do not meet the standard, the power quality analysis module firstly controls the line where the standby battery is located to be connected, then controls the current working power supply line to be disconnected, and generates corresponding alarm information to be sent to the remote server through the network module.
In one embodiment, the power supply chassis further comprises a first non-return diode and a first direct current contactor arranged between the first power supply and the power supply bus, a second non-return diode and a second direct current contactor arranged between the second power supply and the power supply bus, and a third non-return diode and a third direct current contactor arranged between the standby battery and the power supply bus, wherein the main controller further comprises an I/O interface, and the I/O interface is used for controlling the on/off of the first direct current contactor, the second direct current contactor and the third direct current contactor according to an instruction sent by the power quality analysis module to respectively control the working states of the first power supply, the second power supply and the standby battery.
In one embodiment, the main power supply further comprises a battery charging management module, which is used for managing charging and discharging of the backup battery, and when the voltage of the backup battery is lower than a preset voltage threshold, the backup battery is automatically charged; when the charging current of the standby battery is smaller than a preset current threshold or the charging time is larger than a preset time threshold, stopping charging the standby battery; the I/O interface is further used for reading the charge and discharge state of the backup battery.
In one embodiment, the fault recording device acquires a time node synchronized with the remote server through regular time synchronization of the master controller and the remote server.
In one embodiment, the power supply chassis further comprises two active filters, wherein each active filter is respectively arranged on a power supply line where the first power supply is located and a power supply line where the second power supply is located, and is used for compensating harmonic current generated by the first power supply and the second power supply respectively.
In one embodiment, the power supply cabinet further comprises a heat dissipation device arranged at the back of the cabinet shell; the upper shell and the lower shell of the casing of the machine box comprise a plurality of pairs of sliding rails which are correspondingly arranged and used for plugging and unplugging the installation tray; the mounting tray further comprises a connector which is connected with the PCB and supports hot plugging; the voltage output module is arranged on the front panel of the installation tray.
According to the power supply case provided by the embodiment of the invention, the slidable mounting tray is arranged in the case shell, and the universal mounting hole is formed in the mounting tray, so that communication equipment produced by any manufacturer can be inserted into the mounting tray and pushed into the case shell through the mounting hole, the mounting mode is unified, the system wiring is simplified, and convenience is brought to the construction, the manufacturing cost and the maintenance of a project; meanwhile, the voltage output module arranged on the tray can regulate and control different voltage values according to different requirements of communication equipment of different models, so that the universality of power supply is improved, and the reliability is enhanced.
Drawings
Fig. 1 is a schematic structural view of a power supply cabinet according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a power supply cabinet according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a first tray unit in a power supply cabinet according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a second tray unit in a power supply cabinet according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a voltage output module in a power supply enclosure according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a power supply cabinet according to an embodiment of the present invention.
Fig. 7 is a circuit diagram of a power supply chassis according to an embodiment of the invention.
Fig. 8 is a schematic structural diagram of a power supply cabinet according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 and fig. 2 are schematic structural diagrams of a power supply cabinet according to an embodiment of the present invention. As shown in fig. 1, the power supply cabinet includes a cabinet case 10, a mounting tray 20 slidable inside the cabinet case 10, a voltage output module 30 provided on the mounting tray 20, and a main power source 40 provided inside the cabinet case 10 and supplying an input voltage to the voltage output module 30.
The mounting tray 20 is provided with a universal mounting hole, so that the mounting tray is suitable for mounting communication equipment of any manufacturer, and is convenient to mount and maintain. The voltage output module 30 can output the mode-adjustable voltage to meet the voltage requirements of various types of communication equipment, and the universality of power supply is improved.
According to the power supply case provided by the embodiment of the invention, the slidable mounting tray 20 is arranged in the case shell 10, and the universal mounting hole is arranged on the mounting tray 20, so that communication equipment produced by any manufacturer can be inserted into the mounting tray 20 and pushed into the case shell 10 through the mounting hole, the mounting mode is unified, the system wiring is simplified, and convenience is brought to the construction, cost and maintenance of a project; meanwhile, the voltage output module 30 installed on the tray 20 can regulate and control different voltage values according to different requirements of different types of communication equipment, so that the universality of power supply is improved, and the reliability is enhanced.
In one embodiment, as shown in fig. 1, the mounting tray 20 includes a first tray unit 21 and a plurality of second tray units 22. Fig. 3 and 4 are schematic structural views of the first tray unit 21 and the second tray unit 22, respectively. Referring to fig. 1, 3 and 4, the first tray unit 21 may be used to mount the main power source 40, and the plurality of second tray units 22 may be used to mount a plurality of communication devices, wherein each of the second tray units 22 may be used to mount one communication device.
In one embodiment of the present invention, the chassis housing 10 may be sized to be 48.26cm (19 inches) wide and 4U (44.45 mm in 1U) high, which may accommodate the insertion of different sized communication devices. The upper shell and the lower shell of the housing 10 include a plurality of pairs of sliding rails correspondingly disposed for inserting and pulling the first tray unit 21 and the second tray unit 22, in a preferred embodiment, the minimum distance between the sliding rails is 25mm, and those skilled in the art can flexibly select the number of the sliding rails to be installed according to the multiple of the distance of 25mm, thereby determining the maximum number of the mountable communication devices. The arrangement of the distance can meet the size requirement of most communication equipment and can not cause space waste. In one embodiment, a maximum of 16 pairs of slide rails can be installed, i.e., a maximum of 16 communication devices can be installed. The mounting distance between the sliding rails can be designed according to other sizes according to actual requirements by those skilled in the art, and the present invention is not particularly limited to this.
In an embodiment of the present invention, as shown in fig. 2, the power supply cabinet further includes a heat sink 50, and the heat sink 50 is disposed at the back of the cabinet housing 10 and may be composed of four sets of fans. The wind speed and the wind direction of the fan are adjustable, and the heat dissipation requirement inside the case is guaranteed.
In an embodiment of the present invention, the power supply chassis further includes a Printed Circuit Board (PCB) disposed inside the chassis housing 10, and preferably, the PCB is disposed at a back of the chassis housing 10 opposite to the heat dissipation device 50, thereby promoting rapid heat dissipation of the integrated components on the PCB. The PCB includes a power bus through which the main power supply 40 provides an input voltage to the voltage output module 30 of the second tray unit 22.
In an embodiment of the present invention, the first tray unit 21 and the second tray unit 22 are electrically connected to the PCB through connectors, respectively. In another embodiment, the mounting tray 20 further includes a connector connected to the PCB and supporting hot plugging, and the insertion or extraction of the communication device through the connector does not affect other communication devices in operation, thereby improving reliability.
In an embodiment of the present invention, in order to facilitate installation and maintenance of the communication equipment, the installation and wiring may be performed outside the chassis housing 10, and after the installation and wiring are completed, the installation tray 20 may be integrally inserted into the chassis housing 10 to be fixed.
In an embodiment of the present invention, a voltage output module 30 is disposed on the front panel 23 of each second tray unit 22 to facilitate the selection and viewing operation of the output voltage by the user.
Fig. 5 is a schematic structural diagram of a voltage output module 30 in a power supply enclosure according to an embodiment of the present invention. Referring to fig. 1, 4 and 5, the voltage output module 30 includes a micro control unit 34, and a power chip 31, a voltage regulating button 32 and a display nixie tube 33 respectively connected to the micro control unit 34. The micro control unit 34 can automatically recognize the voltage output mode selected by the user according to the pressing mode of the voltage regulating button 32, then control the power chip 31 to output the corresponding voltage according to the recognized voltage output mode, and control the display nixie tube 33 to display the currently selected voltage output value.
In an embodiment of the present invention, the power chip 31 is a DC-DC chip, which includes seven different voltage output modes of 24V, 18V, 13.5V, 12V, 9V, 7.5V, and 5V, and the output power is 35W, so as to adapt to communication devices with different voltage specifications on the market. For the specific voltage output mode included in the power chip 31, those skilled in the art may further make different designs according to other requirements, and the present invention is not limited to this.
In an embodiment of the present invention, as shown in fig. 5, the voltage output module 30 further includes an analog switch 35, and the micro control unit 34 regulates the power chip 31 to output a corresponding voltage according to the selected voltage output mode through the analog switch 35. For the power supply chip 31, it can realize corresponding different voltage output modes by switching the resistance value of the feedback resistor. In one embodiment, during the voltage regulation process of the mcu 34 and the power chip 31, the mcu 34 controls the display nixie tube 33 to display the currently selected voltage output value in a blinking manner. When the regulation is completed, the display nixie tube 33 is controlled by the micro control unit 34 to display the currently selected voltage output value in a normal manner. At this time, the power chip 31 does not immediately output voltage outwards, but the micro control unit 34 collects the actual voltage value currently output by the power chip 31 and compares the actual voltage value with the currently selected voltage output value, if the actual voltage value is equal to the currently selected voltage output value, the power chip 31 is controlled to start to supply power to the communication equipment in the case, and if the actual voltage value is not equal to the currently selected voltage output value, the micro control unit 34 controls the power chip 31 not to supply power outwards and generates corresponding alarm information.
Fig. 6 is a schematic structural diagram of a power supply cabinet according to another embodiment of the present invention. As shown in fig. 6, the power supply cabinet further comprises a main controller 60, and the main controller 60 may be integrated on a PCB, and may specifically include a network module 61 and an internal communication bus 62. The main controller 60 can perform information and command interaction with the voltage output module 30 through the internal communication bus 62 to realize internal communication; communication with the remote server 70 may be achieved through the network module 61. Therefore, the alarm information generated by the micro control unit 34 can be transmitted to the main controller 60 via the internal communication bus 62, and then transmitted to the remote server 70 via the network module 61 by the main controller 60, so as to attract the attention of the staff and take corresponding measures to ensure the safety and reliability of the power supply cabinet.
In an embodiment of the present invention, the display nixie tube 33 is designed to have three bits and two lines, wherein the first line can be used for displaying the value of the operating voltage, and the resolution can be 0.1V, for example, and the second line can be used for displaying the value of the operating current, and the resolution can be 0.01A, for example. It is understood that the design may be varied by workers skilled in the art according to other needs, and the invention is not limited thereto.
In an embodiment of the present invention, the mcu 34 is further configured to lock the voltage-regulating button 32 from being pressed when the power chip 31 starts to supply power to the outside, so as to ensure that the communication device can operate safely and stably. When the current communication device is pulled out from the second tray unit 22 without power supply or needs to be changed to another voltage mode, the micro control unit 34 may further unlock the voltage adjusting button 32 so that it can be continuously pressed, thereby performing a reselection of the voltage output mode.
According to the power supply case provided by the embodiment of the invention, through the arrangement of the voltage output module 30, a user can obtain different voltage output modes through pressing of the external voltage regulating key 32, and compared with the mode that the shell of the power supply module is opened and the output voltage is selected through manually shifting the physical switch, the power supply case is more convenient to operate and higher in safety and reliability. In addition, before the power supply box provided by this embodiment supplies power to the communication device, the actual voltage value currently output by the power chip 31 is compared with the currently selected voltage output value through the micro control unit 34, and power supply to the outside is started only if the actual voltage value matches the currently selected voltage output value, so that the safety of power supply is further ensured.
Fig. 7 is a circuit diagram of a power supply chassis according to an embodiment of the invention. In the present embodiment, as shown in fig. 6 and 7, the main controller 60 further includes a power monitoring module 63. In one embodiment, the power monitoring module 63 may be an embedded computer design, which can establish a power usage database for each communication device on the second tray unit 22 for real-time monitoring of the operation status of the communication device.
In one embodiment of the present invention, the mcu 34 is designed based on digital signal processing technology. When the communication device on the second tray unit 22 works, the corresponding micro control unit 34 collects the working voltage and current data of the communication device at a certain sampling rate (e.g., 5000 times/second), processes the data accordingly, and then transmits the obtained working voltage and current raw data and the corresponding processed data to the power monitoring module 63 through the internal communication bus 62 on the main controller 60.
In an embodiment of the present invention, the processing performed by the micro control unit 34 on the raw data collected by the micro control unit is a fast fourier transform processing and an average processing, and the processed data transmitted to the power supply monitoring module 63 after the processing may be abnormal frequency data obtained after the fast fourier transform processing and average data obtained after the average processing.
The power monitoring module 63 transmits the power consumption data of the communication equipment in operation, which is transmitted from the micro control unit 34, to the remote server 70 through the network module 61, and the staff at the end of the remote server 70 can compile a power consumption parameter database for the communication equipment by combining the data with the actual operation state of the communication equipment. In one embodiment, the data of the power consumption parameter database specifically includes operating voltage data and current data of each communication device during full load, flat peak and standby, and abnormal frequency data after fast fourier transform processing during abnormal operation.
The remote server 70 then transmits the data of its own power consumption parameter database back to the power monitoring module 63, and the power monitoring module 63 can establish a power consumption database for the communication devices on the second tray unit 22 corresponding to each micro control unit 34 according to the data transmitted back by the remote server 70. Therefore, the power consumption database also comprises the working voltage data and current data of the communication equipment during full load, flat peak and standby and the abnormal frequency data after the fast Fourier transform processing during abnormal working. The power monitoring module 63 compares the power consumption data transmitted from the micro control units 34 with the data in the power consumption condition database thereof, judges the working state of the voltage output module 30 corresponding to each micro control unit 34 according to the comparison result, and uploads the working state to the remote server 70; meanwhile, the power monitoring module 63 can also send a corresponding instruction to the micro control unit 34 according to the determination result to control the voltage output module 30 to perform operations such as continuing to output voltage, starting voltage output or stopping voltage output. The power supply case that this embodiment provided carries out real-time supervision to communications facilities's power consumption condition through power monitoring module 63, has further improved the fail safe nature of power supply.
In an embodiment of the present invention, as shown in fig. 7, the main power source 40 is an AC-DC switching power source, the input voltage of the AC-DC switching power source is 220V, the output voltage of the AC-DC switching power source is 28V, the output power of the AC-DC switching power source is 300W, and the input voltage can be provided to the voltage output module 30 on the second tray unit 22 through the power bus 44, and the electromagnetic compatibility (EMC) level of the AC-DC switching power source meets the standard specified in GB/T19287 (general requirement for noise immunity of telecommunication equipment).
In one embodiment of the present invention, the overall power supply 40 supports redundant configurations. Fig. 8 is a schematic structural diagram of a power supply cabinet according to an embodiment of the present invention. As shown in fig. 8, the overall power supply 40 includes a first power supply 41 and a second power supply 42, supporting a redundant configuration.
As shown in fig. 6 and 8, the power supply cabinet provided in this embodiment further includes a fault recording device 80, and the main controller 60 further includes a power quality analysis module 64. The fault recorder 80 is configured to collect input voltages of the first power supply 41 and the second power supply 42 respectively to obtain time domain data of the two power supply lines, perform fast fourier transform processing on the collected input voltages respectively to obtain frequency domain data of the two power supply lines (for example, calculating for higher harmonic components within 50 times), and finally package the time domain data, the frequency domain data, and the time nodes and transmit the packaged time domain data, the frequency domain data, and the time nodes to the main controller 60 through the internal communication bus 62. The power quality analysis module 64 in the main controller 60 selects a better power supply line by calculating time domain data and frequency domain data input by two 220V alternating voltages transmitted by the fault recording device 80, and controls the main power supply 40 to be seamlessly switched to the better power supply line for working.
In one embodiment of the present invention, as shown in fig. 8, the overall power supply 40 further includes a backup battery 43. When the power quality analysis module 64 calculates that the current working power supply line is superior to the standby power supply line, the main power supply 40 is controlled not to be switched; when the power quality analysis module 64 calculates that the standby power supply line is superior to the currently working power supply line, the standby power supply line is firstly controlled to be conducted, so that the standby power supply is merged into the power bus 44, and the currently working power supply line is controlled to be disconnected after a period of time (such as 20 ms); when the power quality analysis module 64 calculates that the currently operating power supply line and the standby power supply line do not meet the standard, the power quality analysis module firstly controls the line where the standby battery 43 is located to be on, and then controls the currently operating power supply line to be off after a period of time (such as 20ms), and generates corresponding alarm information. The alarm information is sent to the remote server 70 through the network module 61, and a worker at the remote server 70 can take corresponding measures when finding the alarm information.
It should be noted that, the currently operating power supply line and the standby power supply line may both refer to the line on which the first power source 41 or the second power source 42 is located, but are not specified as to which of the first power source 41 and the second power source 42 is located. That is, as long as the first power source 41 or the second power source 42 (e.g., the first power source 41) is currently operating, the line on which it is located is referred to as the currently operating power supply line, and the line on which the other non-operating power source (e.g., the second power source 42) is located is referred to as the backup power supply line.
In one embodiment of the present invention, as shown in FIG. 6, the host controller 60 further includes an I/O interface 65. As shown in fig. 8, the power supply cabinet further includes a first non-return diode D1 and a first dc contactor K1 disposed between the first power source 41 and the power bus 44, a second non-return diode D2 and a second dc contactor K2 disposed between the second power source 42 and the power bus 44, and a third non-return diode D3 and a third dc contactor K3 disposed between the backup battery 43 and the power bus 44. The main controller 60 may control the I/O interface 65 to generate corresponding driving signals according to the command sent by the power quality analysis module 64, so as to drive the first dc contactor K1, the second dc contactor K2, and the third dc contactor K3 to be turned on or off to control the operating states of the first power source 41, the second power source 42, and the backup battery 43, respectively.
In an embodiment of the present invention, the backup battery 43 is a 28V/10.4Ah lithium battery pack, which can maintain the normal operation of the power supply chassis for more than 1 hour, thereby ensuring that power can be kept supplied in a short time under the condition that the power quality of the first power source 41 and the second power source 42 is not ideal, and enhancing the safety and reliability of power supply.
In an embodiment of the present invention, as shown in fig. 8, the main power source 40 further includes a battery charging management module 45 for managing charging and discharging of the backup battery 43. In one embodiment, the battery charging management module 45 automatically charges the backup battery 43 when the voltage of the backup battery 43 is below a preset voltage threshold (e.g., 97.6% of the charging voltage); when the charging current of the backup battery 43 is smaller than a preset current threshold (e.g., 25mA) or the charging time is larger than a preset time threshold (e.g., 5 hours), the battery charging management module 45 stops charging the backup battery 43. In one embodiment, the main controller 60 may read the charge and discharge state of the backup battery 43 through the I/O interface 65.
In an embodiment of the present invention, the master controller 60 performs time synchronization with the remote server 70 during the power-on initialization phase, so as to obtain a clock synchronized with the remote server 70, and meanwhile, the master controller 60 synchronizes the clock to the fault recorder 80 and the voltage output module 30 connected thereto, so that the fault recorder 80 obtains a corresponding time node through the regular time synchronization between the master controller 60 and the remote server 70.
The power supply chassis provided by the embodiment of the invention not only supports redundant configuration of the power supplies by arranging two power supplies, but also can calculate and analyze the better selection between the current working power supply line and the standby power supply line by matching the additionally arranged fault recording device 80 with the electric energy quality analysis module 64 in the main controller 60, thereby controlling the main power supply 40 to be switched to the corresponding power supply line for working and improving the quality of power supply. In addition, the main power supply in the embodiment of the present invention further includes a backup battery, so that when the power quality analysis module 64 determines that neither of the power supply lines of the first power supply 41 and the second power supply 42 is ideal, the main power supply 40 can be further controlled to be switched to the power supply line of the backup battery 43 for operation, and the safety, reliability and high performance of the system operation are further ensured. In addition, for higher harmonics, the fault recording device 80 collects interference waveforms of input voltage and combines with time nodes to package and transmit the interference waveforms to the remote server 70 to form a historical data file, so that workers can associate the interference waveforms with the operation faults of the communication equipment through the time nodes, and important basis is provided for analyzing the working abnormity and faults of the system.
In an embodiment of the present invention, as shown in fig. 6 and 8, the power supply chassis further includes an active filter 90. The active filter 90 may be installed inside the cabinet housing 10 for compensating harmonics generated from the total power source 40. In this embodiment, there are two active filters 90, and a parallel design is used. The two active filters 90 are respectively disposed in a power supply line where the first power source 41 is located and a power supply line where the second power source 42 is located, and loads of the two active filters are respectively the first power source 41 and the second power source 42.
In one embodiment, the input voltage of the first power source 41 and the second power source 42 is 220V AC, the output power is 300W, and the power efficiency is 95%. The load current I of the active filter 90 can be calculated according to the parametersLoad current300W/220V/95% ═ 1.43A. Generally, the communication equipment recommends that the typical value of the harmonic component of the input current (THDI) is 35%, and then the harmonic current I can be obtainedHarmonic current＝ILoad currentAs THDI is 1.43A 35% 0.5A, the capacity of the active filter 90 can be designed to be greater than 0.5A (e.g., 1A). The active filter 90 can compensate 3 rd, 5 th, 7 th and 11 th harmonics generated by the first power source 41 and the second power source 42, and can compensate 20 th harmonic current at most, thereby solving the problem of harmonic pollution and enabling the communication system to operate stably, safely and reliably.
Those of ordinary skill in the art will appreciate that the various illustrative modules described in the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (13)
1. A power supply cabinet, comprising:
a chassis housing having a PCB disposed therein;
a mounting tray slidable within the cabinet housing, the mounting tray including a universal mounting hole, a first tray unit and a plurality of second tray units;
the voltage output module is arranged on each second tray unit in the plurality of second tray units and is used for outputting mode-adjustable voltage; and
the main power supply is arranged on the first tray unit and provides input voltage for the voltage output module;
the main controller is integrated on the PCB and comprises a power supply monitoring module, a network module and an internal communication bus;
the voltage output module comprises a micro control unit, a power chip, a voltage regulating key and a display nixie tube, wherein the power chip, the voltage regulating key and the display nixie tube are respectively connected to the micro control unit;
the micro control unit is further used for collecting and processing voltage and current data of communication equipment on a second tray unit corresponding to the micro control unit when the communication equipment works, the collected original data and the processed data are transmitted to the power supply monitoring module through the internal communication bus, the power supply monitoring module is used for transmitting the original data and the processed data transmitted by the micro control unit to a remote server through the network module, and an electricity utilization condition database is independently established for the communication equipment on the second tray unit corresponding to the micro control unit according to data returned by the remote server.
2. The power supply cabinet of claim 1, wherein the first tray unit and the plurality of second tray units are electrically connected to the PCB by connectors, respectively, the PCB including a power bus through which the main power supply provides the input voltage to the voltage output module.
3. The power supply cabinet according to claim 1, wherein the voltage output module further comprises an analog switch, the micro control unit regulates and controls the power supply chip to output voltage according to the selected voltage output mode through the analog switch, and during the regulation, the micro control unit controls the display nixie tube to display the currently selected voltage output value in a flashing manner; when the regulation and control are completed, the micro control unit controls the display nixie tube to display the currently selected voltage output value in a normal mode and collects the currently output actual voltage value of the power supply chip, if the currently output actual voltage value is equal to the currently selected voltage output value, the micro control unit controls the power supply chip to start supplying power outwards, and if the currently output actual voltage value is not equal to the currently selected voltage output value, the micro control unit controls the power supply chip not to supply power outwards and generates alarm information.
4. The power supply cabinet of claim 3, wherein the micro control unit is further configured to lock the voltage regulating button when the power chip starts to supply power to the outside.
5. The power supply cabinet according to claim 1, wherein the power supply monitoring module is further configured to compare the raw data and the processed data transmitted by the micro control unit with data in a power consumption condition database corresponding to the raw data and the processed data, determine a working state of a voltage output module corresponding to the micro control unit according to a comparison result, upload the working state to the remote server, and send a corresponding instruction to the micro control unit according to the determination result.
6. The power supply cabinet according to claim 5, wherein the processing data comprises abnormal frequency data obtained after fast Fourier transform processing and mean value data obtained after mean value processing; the data in the power consumption condition database comprises working voltage data and current data of the communication equipment during full load, flat peak and standby respectively and abnormal frequency data obtained after fast Fourier transform processing during abnormal working; the instructions include instructions to control the voltage output module to continue voltage output, start voltage output, and stop voltage output.
7. The power supply cabinet according to claim 2, further comprising a fault recording device, wherein the main controller further comprises a power quality analysis module, the main power supply comprises a first power supply and a second power supply, the fault recording device is configured to collect input voltages of the first power supply and the second power supply respectively to obtain respective time domain data of two power supply lines, perform fast fourier transform processing on the two collected input voltages respectively to obtain respective frequency domain data of the two power supply lines, and package the time domain data, the frequency domain data and time nodes to be transmitted to the main controller through the internal communication bus; and the electric energy quality analysis module selects a better power supply circuit by calculating the time domain data and the frequency domain data transmitted by the fault recording device and controls the main power supply to be seamlessly switched to the better power supply circuit to work.
8. The power supply cabinet of claim 7, wherein the main power supply further comprises a backup battery, and when the power quality analysis module calculates that the currently operating power supply line is better than the backup power supply line, the main power supply is controlled not to be switched; when the electric energy quality analysis module calculates that the standby power supply line is superior to the current working power supply line, firstly controlling the standby power supply line to be conducted, and then controlling the current working power supply line to be disconnected; when the power quality analysis module calculates that the current working power supply line and the standby power supply line do not meet the standard, the power quality analysis module firstly controls the line where the standby battery is located to be connected, then controls the current working power supply line to be disconnected, and generates corresponding alarm information to be sent to a remote server through the network module.
9. The power supply cabinet of claim 8, further comprising a first non-return diode and a first dc contactor disposed between the first power source and the power bus, a second non-return diode and a second dc contactor disposed between the second power source and the power bus, and a third non-return diode and a third dc contactor disposed between the backup battery and the power bus, wherein the main controller further comprises an I/O interface, and the I/O interface is configured to control on/off of the first dc contactor, the second dc contactor, and the third dc contactor according to a command issued by the power quality analysis module to control operating states of the first power source, the second power source, and the backup battery, respectively.
10. The power supply cabinet according to claim 9, wherein the main power supply further comprises a battery charging management module for managing charging and discharging of the backup battery, and automatically charging the backup battery when the voltage of the backup battery is lower than a preset voltage threshold; when the charging current of the standby battery is smaller than a preset current threshold or the charging time is larger than a preset time threshold, stopping charging the standby battery; the I/O interface is further used for reading the charge and discharge state of the backup battery.
11. The power supply cabinet of claim 7, wherein the fault logging device obtains a time node synchronized with a remote server through periodic time synchronization of the master controller with the remote server.
12. The power supply cabinet of claim 7, further comprising two active filters, wherein each active filter is disposed on a power supply line on which the first power source is disposed and a power supply line on which the second power source is disposed, and is configured to compensate for harmonic currents generated by the first power source and the second power source, respectively.
13. The power supply cabinet of any one of claims 2 to 12, further comprising a heat sink disposed at a back of the cabinet housing; the upper shell and the lower shell of the case shell comprise a plurality of pairs of sliding rails which are correspondingly arranged and used for plugging and unplugging the installation tray; the mounting tray further comprises a connector which is connected with the PCB and supports hot plugging; the voltage output module is arranged on the front panel of the installation tray.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157216.7A CN108336893B (en) | 2018-02-24 | 2018-02-24 | Power supply machine box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810157216.7A CN108336893B (en) | 2018-02-24 | 2018-02-24 | Power supply machine box |
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| CN108336893B true CN108336893B (en) | 2020-06-19 |
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| CN109526176A (en) * | 2018-12-05 | 2019-03-26 | 中航光电科技股份有限公司 | A kind of boosting, which helps, pulls out airborne electronic equipment mounting structure |
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| TW525329B (en) * | 2000-05-29 | 2003-03-21 | Omron Tateisi Electronics Co | Power supply module and power supply unit using the same |
| CN100593769C (en) * | 2003-05-16 | 2010-03-10 | 莱克博系统公司 | Computer rack with power distribution system |
| JP2008043047A (en) * | 2006-08-07 | 2008-02-21 | Meidensha Corp | Cooling structure for power converter |
| CN101685974A (en) * | 2008-09-28 | 2010-03-31 | 徐建华 | Mobile power supply |
| CN201523492U (en) * | 2009-06-12 | 2010-07-07 | 北京兴大豪科技开发有限公司 | Electric control box |
| CN202873246U (en) * | 2012-09-18 | 2013-04-10 | 杭州巨远电子设备有限公司 | Drawer-type case used for intelligent power supply distributing unit |
| CN103812350B (en) * | 2014-03-07 | 2017-07-18 | 长春建筑学院 | Piezoelectricity pump driving power supply |
| CN205787998U (en) * | 2016-07-13 | 2016-12-07 | 吉首大学 | A kind of visualization Digital DC Voltage-stabilized Power Source |
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