CN214227927U - Power supply device for music stand - Google Patents

Power supply device for music stand Download PDF

Info

Publication number
CN214227927U
CN214227927U CN202120398080.6U CN202120398080U CN214227927U CN 214227927 U CN214227927 U CN 214227927U CN 202120398080 U CN202120398080 U CN 202120398080U CN 214227927 U CN214227927 U CN 214227927U
Authority
CN
China
Prior art keywords
switch
conversion circuit
main
standby
battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202120398080.6U
Other languages
Chinese (zh)
Inventor
王岿岩
张海滨
师帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Polytechnic Institute
Original Assignee
Henan Polytechnic Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Polytechnic Institute filed Critical Henan Polytechnic Institute
Priority to CN202120398080.6U priority Critical patent/CN214227927U/en
Application granted granted Critical
Publication of CN214227927U publication Critical patent/CN214227927U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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

Abstract

The utility model relates to a power supply unit for music stand, include: the device comprises an alternating current input interface, a direct current output interface, a main AC/DC conversion circuit, a standby AC/DC conversion circuit, a manual power switch, a switching relay, a switching control loop, a main battery switching switch, a standby battery switching switch, a main battery and a standby battery. If the main AC/DC conversion circuit fails, the standby AC/DC conversion circuit can be put in to improve the power supply reliability, and if the main AC/DC conversion circuit and the standby AC/DC conversion circuit both fail, the main battery switching switch can be operated to put in the main battery, and if the main battery fails, the standby battery switching switch is operated to put in the standby battery, so that even if the main AC/DC conversion circuit and the standby AC/DC conversion circuit both fail, the main battery or the standby battery can be put in to improve the power supply reliability of the music stand.

Description

Power supply device for music stand
Technical Field
The utility model relates to a power supply unit for music stand.
Background
The music stand used in music performance activities is characterized in that a plate body for placing music scores is fixed above a support, and the paper music scores are directly turned by hands to be played in use. In order to solve the problems, an electronic music stand comes along, an electronic music score display screen is arranged above a telescopic adjusting support with a base, and music scores are displayed according to the electronic music score display screen. In order to ensure the reliable operation of the electronic music stand, a reliable and stable power supply is required.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a power supply unit for music stand for provide reliable and stable power supply.
A power supply apparatus for a music stand, comprising: the device comprises an alternating current input interface, a direct current output interface, a main AC/DC conversion circuit, a standby AC/DC conversion circuit, a manual power switch, a switching relay, a switching control loop, a main battery switching switch, a standby battery switching switch, a main battery and a standby battery;
the manual power switch comprises a first power sub-switch and a second power sub-switch which have the same switch state, and the switching relay comprises a control coil, a normally open contact switch, a first normally closed contact switch and a second normally closed contact switch;
the alternating current input interface is connected with the input end of the first power supply sub-switch, the output end of the first power supply sub-switch is connected with the alternating current side of the main AC/DC conversion circuit and the input end of the first normally closed contact switch, the direct current side of the main AC/DC conversion circuit is connected with the input end of the normally open contact switch, the output end of the first normally closed contact switch is connected with the alternating current side of the standby AC/DC conversion circuit, the direct current side of the standby AC/DC conversion circuit is connected with the input end of the second normally closed contact switch, and the output end of the normally open contact switch and the output end of the second normally closed contact switch are connected with the direct current output interface;
the main battery is connected with the direct current output interface through the main battery switching switch, and the standby battery is connected with the direct current output interface through the standby battery switching switch;
the switching control loop is connected with the direct current side of the main AC/DC conversion circuit, and the second power supply sub-switch and the control coil are arranged in the switching control loop in series.
Further, the direct current side of main AC/DC converting circuit with it is provided with first pilot lamp to establish ties between the input of normally open contact switch, the direct current side of reserve AC/DC converting circuit with it is provided with the second pilot lamp to establish ties between the input of second normally closed contact switch, the main battery with it is provided with the third pilot lamp to establish ties between the main battery on-off switch, the reserve battery with it is provided with the fourth pilot lamp to establish ties between the reserve battery on-off switch.
Further, power supply unit still includes safe operation switch, the output of normally open contact switch and the output connection of second normally closed contact switch the direct current output interface specifically is: the output end of the normally open contact switch and the output end of the second normally closed contact switch are connected with the input end of the safety operation switch, and the output end of the safety operation switch is connected with the direct current output interface.
The utility model has the advantages that: the manual power switch is operated to be switched on, the first power supply sub-switch and the second power supply sub-switch are switched on, if the direct current side of the main AC/DC conversion circuit is electrified, two ends of the switching control loop are electrified, the control coil is electrified, the normally open contact switch is closed, the two normally closed contact switches are disconnected, the main AC/DC conversion circuit is switched on, the standby AC/DC conversion circuit is withdrawn, and the alternating current is converted into direct current through the main AC/DC conversion circuit and then supplies power to the music stand; if the main AC/DC conversion circuit fails, the direct current side of the main AC/DC conversion circuit is not electrified, the two ends of the switching control loop are not electrified, the control coil is electrified, the normally open contact switch is disconnected, the two normally closed contact switches are closed, the main AC/DC conversion circuit exits, the standby AC/DC conversion circuit is switched in, and the alternating current is converted into the direct current through the standby AC/DC conversion circuit and then supplies power to the music stand; and if the music stand still has no electricity after being switched to the standby AC/DC conversion circuit, the main battery switching switch can be operated to switch into the main battery if the main AC/DC conversion circuit and the standby AC/DC conversion circuit are both in failure, and the standby battery switching switch is operated to switch into the standby battery if the main battery is in failure. Therefore, if the main AC/DC conversion circuit fails, the standby AC/DC conversion circuit is put into use, and even if both the main AC/DC conversion circuit and the standby AC/DC conversion circuit fail, the main battery or the standby battery can be put into use, so that the power supply reliability of the music stand is improved.
Drawings
Fig. 1 is a circuit configuration diagram of a power supply apparatus for a music rack;
fig. 2 is a switching control loop diagram.
Detailed Description
The present embodiment provides a power supply apparatus for a music stand, including: the device comprises an alternating current input interface, a direct current output interface, a main AC/DC conversion circuit, a standby AC/DC conversion circuit, a manual power switch, a switching relay, a switching control loop, a main battery switching switch SB3, a standby battery switching switch SB4, a main battery and a standby battery.
The alternating current input interface is used for connecting 220V alternating current and can be a conventional alternating current plug or a line connector. The direct current output interface can be a conventional line connector and is used for supplying power to be connected with the music stand and supplying power to the music stand.
The manual power switch is a manually operated switch, such as a rocker switch or a push-button switch, and includes a first power sub-switch SB1 and a second power sub-switch SB2 having the same switch status, i.e. when the manual power switch is operated, the first power sub-switch SB1 and the second power sub-switch SB2 are simultaneously operated, and the switch statuses of the first power sub-switch SB1 and the second power sub-switch SB2 are always the same.
The switching relay is a conventional relay apparatus including a control coil T1, a normally open contact switch S1, a first normally closed contact switch S2, and a second normally closed contact switch S3.
The main AC/DC conversion circuit and the standby AC/DC conversion circuit are both conventional rectification circuits, the main AC/DC conversion circuit and the standby AC/DC conversion circuit can be of the same circuit structure, and the direct current voltage on the direct current side of the main AC/DC conversion circuit and the standby AC/DC conversion circuit is the working voltage of the music stand.
The main battery switch SB3 and the backup battery switch SB4 are both conventional manually operated switches, such as rocker switches or push-button switches.
The main battery and the backup battery are both conventional energy storage batteries (for example, a battery pack formed by connecting at least two lithium ion single batteries in series or in parallel), and the voltage of the main battery and the backup battery is the working voltage of the music stand.
As shown in fig. 1, the AC input interface is connected to the input terminal of the first power supply sub-switch SB1, the output terminal of the first power supply sub-switch SB1 is connected to the AC side of the main AC/DC converter circuit and the input terminal of the first normally closed contact switch S2, the DC side of the main AC/DC converter circuit is connected to the input terminal of the normally open contact switch S1, and the output terminal of the normally open contact switch S1 is connected to the DC output interface. The output end of the first normally closed contact switch S2 is connected with the alternating current side of the standby AC/DC conversion circuit, the direct current side of the standby AC/DC conversion circuit is connected with the input end of the second normally closed contact switch S3, and the output end of the second normally closed contact switch S3 is connected with the direct current output interface. The main battery is connected with the direct current output interface through a main battery switching switch SB3, and the standby battery is connected with the direct current output interface through a standby battery switching switch SB 4.
In this embodiment, a first indicator lamp L1 is provided in series between the direct current side of the main AC/DC converter circuit and the input end of the normally-open contact switch S1, a second indicator lamp L2 is provided in series between the direct current side of the backup AC/DC converter circuit and the input end of the second normally-closed contact switch S3, a third indicator lamp L3 is provided in series between the main battery and the main battery switch SB3, and a fourth indicator lamp L4 is provided in series between the backup battery and the backup battery switch SB 4. In the operation process of the power supply device, the operation state of the power supply device can be intuitively known through the lighting state of each indicator lamp.
In this embodiment, in order to further improve the line safety, the power supply device further includes a safety operation switch SB5, and the safety operation switch SB5 is a conventional manual operation switch, such as a rocker switch or a push-button switch. As shown in fig. 1, the output terminal of the normally open contact switch S1 and the output terminal of the second normally closed contact switch S3 are connected to the input terminal of the safety operation switch SB5, and the output terminal of the safety operation switch SB5 is connected to the dc output interface.
As shown in fig. 2, the switching control loop is connected to the DC side of the main AC/DC conversion circuit, and the second power sub-switch SB2 and the control coil T1 are serially arranged in the switching control loop, specifically: the positive end of the switching control loop is connected with the positive electrode of the direct current side of the main AC/DC conversion circuit, and the negative end of the switching control loop is connected with the negative electrode of the direct current side of the main AC/DC conversion circuit. The direct current side of the main AC/DC conversion circuit provides power for the switching control loop.
The alternating current input interface is connected with external 220V alternating current, and the direct current output interface is connected with the music stand. The manual operation power switch and the safe operation switch SB5 are switched on, the first power supply sub switch SB1 and the second power supply sub switch SB2 are switched on, if the main AC/DC conversion circuit is normal, the direct current side of the main AC/DC conversion circuit is electrified, the two ends of the switching control circuit are electrified, the control coil T1 is electrified, the normally open contact switch S1 is closed, the first normally closed contact switch S2 and the second normally closed contact switch S3 are disconnected, the main AC/DC conversion circuit is switched on, the standby AC/DC conversion circuit is switched off, and the alternating current is converted into direct current through the main AC/DC conversion circuit and then supplies power to the music stand. Whether the main AC/DC conversion circuit fails when the manual power switch is turned on or the main AC/DC conversion circuit fails to output direct current in the process of supplying power to the music stand, namely, the main AC/DC conversion circuit fails (for example, an internal line of the main AC/DC conversion circuit is burnt out) in the operation process of the music stand, the direct current side of the main AC/DC conversion circuit is not electrified, two ends of the switching control loop are not electrified, the control coil T1 is deenergized, the normally-open contact switch S1 is opened, the first normally-closed contact switch S2 and the second normally-closed contact switch S3 are closed, the main AC/DC conversion circuit is withdrawn, the standby AC/DC conversion circuit is put into use, and alternating current is converted into direct current through the standby AC/DC conversion circuit to supply power to the music stand.
If the main AC/DC conversion circuit and the standby AC/DC conversion circuit both have faults, that is, direct current cannot be output, for example, when the manual power switch is turned on, the main AC/DC conversion circuit and the standby AC/DC conversion circuit have faults, or when the music stand is powered, that is, the main AC/DC conversion circuit and the standby AC/DC conversion circuit have faults in the running process of the music stand, the operation safety operation switch SB5 is turned off, the main battery switching switch SB3 is turned on, and the main battery is put into use. Further, if the main battery fails, the main battery switching switch SB3 is turned off, and the backup battery switching switch SB4 is turned on to switch the backup battery in. It should be understood that after the safety operation switch SB5 is turned off, the main AC/DC conversion circuit and the standby AC/DC conversion circuit can be easily repaired or replaced, thereby preventing electric shock hazard.

Claims (3)

1. A power supply apparatus for a music stand, comprising: the device comprises an alternating current input interface, a direct current output interface, a main AC/DC conversion circuit, a standby AC/DC conversion circuit, a manual power switch, a switching relay, a switching control loop, a main battery switching switch, a standby battery switching switch, a main battery and a standby battery;
the manual power switch comprises a first power sub-switch and a second power sub-switch which have the same switch state, and the switching relay comprises a control coil, a normally open contact switch, a first normally closed contact switch and a second normally closed contact switch;
the alternating current input interface is connected with the input end of the first power supply sub-switch, the output end of the first power supply sub-switch is connected with the alternating current side of the main AC/DC conversion circuit and the input end of the first normally closed contact switch, the direct current side of the main AC/DC conversion circuit is connected with the input end of the normally open contact switch, the output end of the first normally closed contact switch is connected with the alternating current side of the standby AC/DC conversion circuit, the direct current side of the standby AC/DC conversion circuit is connected with the input end of the second normally closed contact switch, and the output end of the normally open contact switch and the output end of the second normally closed contact switch are connected with the direct current output interface;
the main battery is connected with the direct current output interface through the main battery switching switch, and the standby battery is connected with the direct current output interface through the standby battery switching switch;
the switching control loop is connected with the direct current side of the main AC/DC conversion circuit, and the second power supply sub-switch and the control coil are arranged in the switching control loop in series.
2. The power supply unit for the music stand according to claim 1, wherein a first indicator lamp is provided in series between the direct current side of the main AC/DC conversion circuit and the input terminal of the normally-open contact switch, a second indicator lamp is provided in series between the direct current side of the backup AC/DC conversion circuit and the input terminal of the second normally-closed contact switch, a third indicator lamp is provided in series between the main battery and the main battery switching switch, and a fourth indicator lamp is provided in series between the backup battery and the backup battery switching switch.
3. The power supply device for a music stand according to claim 1, further comprising a safety operation switch, wherein the output terminal of the normally open contact switch and the output terminal of the second normally closed contact switch are connected to the dc output interface, specifically: the output end of the normally open contact switch and the output end of the second normally closed contact switch are connected with the input end of the safety operation switch, and the output end of the safety operation switch is connected with the direct current output interface.
CN202120398080.6U 2021-02-23 2021-02-23 Power supply device for music stand Expired - Fee Related CN214227927U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120398080.6U CN214227927U (en) 2021-02-23 2021-02-23 Power supply device for music stand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120398080.6U CN214227927U (en) 2021-02-23 2021-02-23 Power supply device for music stand

Publications (1)

Publication Number Publication Date
CN214227927U true CN214227927U (en) 2021-09-17

Family

ID=77692636

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120398080.6U Expired - Fee Related CN214227927U (en) 2021-02-23 2021-02-23 Power supply device for music stand

Country Status (1)

Country Link
CN (1) CN214227927U (en)

Similar Documents

Publication Publication Date Title
CN203416038U (en) Dual power supply device
CN204706946U (en) A kind of double power supply automatic transfer switch
CN207766033U (en) A kind of energy storage type emergency power supply
CN202904280U (en) Control circuit approaching to zero standby power consumption
CN112072741B (en) Method and device for realizing one-key starting of household energy storage system
CN214227927U (en) Power supply device for music stand
CN108063491A (en) Forced oil-circulated air-cooled transformer cooling control system
CN207939262U (en) Forced oil-circulated air-cooled transformer cooling control system
CN207603046U (en) General operation power supply box
CN203301212U (en) Dual standby saving type DC power supply system
CN103199586B (en) -48V direct current single system double-power-source storage battery contact device and switching method thereof
CN210380253U (en) Multifunctional online transformer substation direct-current bus voltage loss prevention system
CN203434739U (en) Intelligent-type networking system for direct-current contactor of communication power supply
CN108199572B (en) Frequency converter and power-off protection system thereof
CN207283382U (en) Anti-electric shock type isolated power supply
CN202421459U (en) DC (direct current) control system for tests of electric automobile motor
CN217789544U (en) Multi-voltage output power supply
CN201122862Y (en) Power supply controller
CN216530007U (en) Battery cabinet system and uninterrupted power source's start control equipment
CN217508318U (en) 500kV direct current breaker power supply system
CN209930005U (en) Special power supply device for debugging distribution automation terminal
CN219999093U (en) Main and standby power supply automatic conversion control device for dust removal system and dust removal system
CN220107624U (en) Power supply control circuit of energy storage system
CN219554660U (en) UPS emergency power supply system
CN220797818U (en) Power supply management system of communication base station 5G equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210917