CN212649178U - Standby power supply system - Google Patents
Standby power supply system Download PDFInfo
- Publication number
- CN212649178U CN212649178U CN202021161270.8U CN202021161270U CN212649178U CN 212649178 U CN212649178 U CN 212649178U CN 202021161270 U CN202021161270 U CN 202021161270U CN 212649178 U CN212649178 U CN 212649178U
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- circuit
- power supply
- super capacitor
- switch
- capacitor bank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model discloses a standby power supply system, which comprises a control circuit, a super capacitor group, a power supply circuit and a switch circuit, wherein the switch circuit comprises a first switch branch and a second switch branch; the output end of the super capacitor bank is connected to the input end of the control circuit, the output end of the control circuit is connected with the first switch branch, and the output end of the control circuit is connected with the second switch branch. The utility model discloses a control circuit and switch circuit's cooperation is used, can adopt super capacitor group to replace the commercial power to be the power supply of power supply circuit automatically in the condition of commercial power outage, can accomplish the steady conversion of power supply circuit's commercial power to super capacitor group power supply, ensures the normal work of lottery ticket printer all the time, has characteristics such as small, low price moreover. The utility model discloses can wide application in stand-by power supply technical field.
Description
Technical Field
The utility model relates to a stand-by power supply technical field especially relates to a stand-by power supply system.
Background
Some existing lottery terminal selling machines stop printing the lottery which has already been printed if no delay power supply exists after the mains supply is abnormally powered off.
In order to ensure that the lottery printing can be completed after Power failure, the conventional lottery printer mostly uses an Uninterruptible Power Supply (UPS) or lithium battery switching for Power Supply, and although the UPS can ensure automatic switching without Power failure time, the UPS has high cost and large volume and is not easy to mount on the lottery printer; the method of switching the lithium battery to supply power has the disadvantages of large voltage variation during switching, limited charging and discharging times and short service life.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a: a backup power supply system is provided.
The utility model adopts the technical proposal that:
a standby power supply system comprises a control circuit, a super capacitor bank, a power supply circuit and a switch circuit, wherein the switch circuit comprises a first switch branch and a second switch branch;
the output end of the super capacitor bank is connected to the input end of the control circuit, the output end of the control circuit is connected with the first switch branch, and the output end of the control circuit is connected with the second switch branch;
the output end of the first switch branch is connected with the input end of the super capacitor bank, the input end of the first switch branch is connected with the output end of the power circuit, the input end of the second switch branch is connected with the output end of the super capacitor bank, and the output end of the second switch branch is connected with the input end of the power circuit.
Furthermore, the super capacitor group is formed by connecting a plurality of super capacitors in series.
Further, the first switching branch comprises a first diode and a first switching element.
Further, the second switching branch comprises a second diode and a second switching element.
Further, the power circuit adopts a lithium battery pack.
Furthermore, two ends of the super capacitor bank are connected with a lithium battery bank in parallel.
The utility model has the advantages that: through the cooperation use of control circuit and switch circuit, can adopt super capacitor group to replace the commercial power to supply power for power supply circuit automatically in the circumstances of commercial power outage, can accomplish the steady conversion that power supply circuit's commercial power supplied power to super capacitor group supplied power, guarantee lottery ticket printer's normal work all the time, have characteristics such as small, low price moreover.
Drawings
Fig. 1 is a block diagram of a standby power supply system according to the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
The invention will be further explained and explained with reference to the drawings and the embodiments in the following description.
To at least partially solve one of the above problems, referring to fig. 1, the present invention provides a standby power system, which includes a control circuit, a super capacitor bank, a power circuit, and a switch circuit 1, wherein the switch circuit includes a first switch branch 11 and a second switch branch 12;
the output end of the super capacitor bank is connected to the input end of the control circuit, so that power is supplied to the control circuit, the normal work of the control circuit is guaranteed, the output end of the control circuit is connected with the first switch branch 11 so as to control the on-off state of the first switch branch 11, and the output end of the control circuit is connected with the second switch branch 12 so as to control the on-off state of the second switch branch 12;
the output end of the first switch branch 11 is connected with the input end of the super capacitor bank, the input end of the first switch branch 11 is connected with the output end of the power circuit, the input end of the second switch branch 12 is connected with the output end of the super capacitor bank, the output end of the second switch branch 12 is connected with the input end of the power circuit, and the output end of the power circuit is connected to the lottery ticket printer so as to supply power to the lottery ticket printer.
In one embodiment, the power circuit adopts a 24V lithium battery pack, the super capacitor pack is obtained by connecting a plurality of super capacitors in series, the super capacitors have the characteristics of small size, high charging speed, long cycle service life, reliable performance and the like, a voltage stabilizing circuit is arranged in each super capacitor, the stable transition conversion of voltage can be realized under the condition of power failure, and the withstand voltage value of a single super capacitor is 2.7V, so that 10 super capacitors are connected in series to form the super capacitor pack in the embodiment, and the withstand voltage requirement of the power circuit is met.
The control circuit in this application is used for controlling the operating condition of switch circuit 1 to realize the charge-discharge process of super capacitor group. The control circuit can be implemented by a conventional single chip circuit, a microprocessor, etc., and will not be described herein.
The switching circuit 1 in the present application is used to control the charging and discharging of the super capacitor. Referring to fig. 1, the switching circuit 1 comprises a first switching leg 11 and a second switching leg 12.
The first switching branch 11 is used for controlling the charging of the super capacitor bank. The first switch branch 11 comprises a first diode D1 and a first switch element K1, wherein the anode of the first diode D1 is connected to the output end of the power circuit, the cathode of the first diode D1 is connected to one end of the first switch element K1, and the other end of the first switch element K1 is connected to the input end of the super capacitor bank. When the voltage of the super capacitor bank is detected to be lower than the first preset voltage, for example, the first preset voltage may be set to 18V, the control circuit triggers the control signal to control the first switch element K1 to be closed, at this time, the first switch branch 11 is turned on, and the current of the power circuit flows through the first switch branch 11 to reach the super capacitor bank, so as to charge the super capacitor bank, and the first diode D1 may prevent the situation that the current flows backwards when the voltage of the super capacitor bank is higher than the voltage of the power circuit in the process of charging the super capacitor bank. When it is detected that the voltage of the super capacitor bank reaches the second preset voltage, for example, the first preset voltage may be set to 27V, and the control circuit triggers the control signal to control the first switching element K1 to be turned off, so that the first switching branch 11 is in an off state, and the process of charging the super capacitor bank is ended.
The second switching branch 12 is used for controlling the super-capacitor bank to discharge. The second switching branch 12 comprises a second diode D2 and a second switching element K2, a cathode of the second diode D2 is connected to the input terminal of the power circuit, an anode of the second diode D2 is connected to one end of the second switching element K2, and the other end of the second switching element K2 is connected to the output terminal of the super capacitor bank. When the mains supply input to the power circuit is detected to be powered off, the control circuit triggers the control signal to control the second switch element K2 to be closed, at the moment, the second switch branch 12 is conducted, the current of the super capacitor bank flows through the second switch branch 12 to reach the power circuit, so that power is supplied to the power circuit, and the second diode D2 is used for preventing the situation that the current flows backwards when the voltage of the super capacitor bank is lower than the voltage of the power circuit in the process that the super capacitor bank supplies power to the power circuit. The power supply circuit continues to supply power to the lottery ticket printer under the condition of no power failure. When the super capacitor bank detects that the voltage of the super capacitor bank is lower than the third voltage threshold in the discharging process, for example, the third voltage threshold may be set to 18V, and the control circuit triggers the control signal to control the second switching element K2 to be turned off, so that the second switching branch 12 is turned off, and the discharging process of the super capacitor bank is ended, thereby ensuring the service life of the super capacitor bank.
It should be noted that, in the above embodiments, the voltage of the super capacitor bank and the power failure of the commercial power are detected by using a voltage detection circuit in the prior art, which is not described in detail in this application.
In addition, the both ends of the super capacitor bank of this application can also parallelly connected lithium cell group to under the circumstances of commercial power outage, for supplying power for power supply circuit steadily for a long time, and then guarantee lottery ticket printer can last work.
According to the standby power supply system, under the condition that the mains supply is powered off, the super capacitor bank is automatically adopted to replace the mains supply to supply power for the power supply circuit, stable conversion from the mains supply of the power supply circuit to the power supply of the super capacitor bank can be completed, normal work of the lottery printer is guaranteed all the time, and the standby power supply system has the advantages of being small in size, low in price and the like.
The working principle of the utility model is as follows:
after the system is powered on, under the condition that mains supply normally supplies power to the power circuit, the power circuit normally supplies power to the lottery ticket printer, whether the voltage of the super capacitor bank is lower than a first preset voltage is detected, if the voltage is lower than the first preset voltage, the control circuit triggers a control signal to control a first switch element K1 to be closed, a first switch branch 11 is conducted, current output by the power circuit flows through the first switch branch 11 to reach the super capacitor bank, so that the super capacitor bank is charged, the voltage of the super capacitor bank is detected in real time in the process that the power circuit charges the super capacitor bank, when the fact that the capacitor of the super capacitor bank reaches a second preset voltage is detected, the control module triggers the control signal to control a first switch element K1 to be disconnected, and the charging process of the super capacitor bank is finished.
When the condition that the commercial power is cut off is detected, the control circuit triggers the control signal to control the second switch element K2 to be closed, the second switch branch 12 is conducted, at the moment, the super capacitor group discharges to the power circuit, so that the power circuit is powered on, the continuous normal work of the power circuit under the condition that the commercial power is cut off is ensured, and the lottery printer can also work normally under the condition that the power circuit can work normally.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (6)
1. A standby power supply system is characterized by comprising a control circuit, a super capacitor bank, a power supply circuit and a switch circuit, wherein the switch circuit comprises a first switch branch and a second switch branch;
the output end of the super capacitor bank is connected to the input end of the control circuit, the output end of the control circuit is connected with the first switch branch, and the output end of the control circuit is connected with the second switch branch;
the output end of the first switch branch is connected with the input end of the super capacitor bank, the input end of the first switch branch is connected with the output end of the power circuit, the input end of the second switch branch is connected with the output end of the super capacitor bank, and the output end of the second switch branch is connected with the input end of the power circuit.
2. The backup power supply system according to claim 1, wherein said super capacitor bank is formed by connecting a plurality of super capacitors in series.
3. The backup power supply system of claim 1, wherein said first switching leg comprises a first diode and a first switching element.
4. The backup power supply system of claim 1, wherein said second switching leg comprises a second diode and a second switching element.
5. The backup power supply system of claim 1, wherein said power supply circuit employs a lithium battery pack.
6. A backup power supply system according to any of claims 1-2, characterized in that a lithium battery is also connected in parallel across the super capacitor bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021161270.8U CN212649178U (en) | 2020-06-19 | 2020-06-19 | Standby power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021161270.8U CN212649178U (en) | 2020-06-19 | 2020-06-19 | Standby power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212649178U true CN212649178U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021161270.8U Active CN212649178U (en) | 2020-06-19 | 2020-06-19 | Standby power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212649178U (en) |
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2020
- 2020-06-19 CN CN202021161270.8U patent/CN212649178U/en active Active
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