CN211790940U - Voltage-monitorable super capacitor standby circuit applied to electric power product - Google Patents
Voltage-monitorable super capacitor standby circuit applied to electric power product Download PDFInfo
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- CN211790940U CN211790940U CN202020590658.3U CN202020590658U CN211790940U CN 211790940 U CN211790940 U CN 211790940U CN 202020590658 U CN202020590658 U CN 202020590658U CN 211790940 U CN211790940 U CN 211790940U
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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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Abstract
The utility model discloses a but be applied to electric power product's voltage monitoring super capacitor and be equipped with electric circuit, be equipped with electric circuit including power owner supply circuit and super capacitor, wherein: the super capacitor standby circuit comprises a super capacitor charging circuit, a super capacitor discharging circuit, a main circuit voltage monitoring circuit and a super capacitor discharging enabling circuit. The circuit can judge whether to switch to the standby power circuit according to the monitored output voltage of the main circuit, so that the problem that the efficiency of the whole machine is reduced because the main circuit is normally powered but the output voltage of the main circuit is lower than the output voltage of the standby power circuit and the main output voltage is switched to the standby power circuit is avoided. The super capacitor booster circuit always has output voltage, once the main circuit is powered off or the output voltage drops to a set threshold value, the super capacitor discharge circuit is enabled, and the power supply of the equipment is enabled to be seamlessly switched to the standby power circuit from the main circuit.
Description
Technical Field
The utility model relates to a power field, concretely relates to be applied to voltage of electric power product and can monitor super capacitor and be equipped with electric circuit.
Background
With the increasing demand of industrial field application, the demand of people for continuously supplying power to a power supply system to ensure the reliable operation of equipment is higher and higher, and when the power supply of the equipment is interrupted, a standby power supply inside the system maintains the continuous operation of the equipment and waits for the power supply to be recovered. For small-sized low-voltage standby power supplies, a novel standby power supply technology using a super capacitor as an energy storage element is started to be developed.
At present, the standby power supply usually charges a super capacitor while a main power supply supplies power to a load, and the super capacitor is boosted and then connected with the main power supply in parallel through an anti-reverse diode. When the voltage of the main circuit is reduced to be lower than the standby voltage of the super capacitor, the super capacitor starts to discharge and continuously supplies power to the equipment load. The problem that above-mentioned scheme exists is the monitoring to main circuit voltage that lacks, and when main circuit output voltage was less than super capacitor spare power supply voltage, the equipment will continuously use super capacitor discharge circuit power supply, and this will make the efficiency of whole system descend very seriously.
Based on the above situation, in order to ensure that the main circuit voltage can maintain the normal operation of the device, the super capacitor backup circuit does not participate in power supply, it is necessary to design a voltage-monitorable super capacitor backup circuit applied to the power product, which can consider whether to switch to the backup circuit according to the actual condition of the main circuit voltage.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a but be applied to voltage monitoring super capacitor of electric power product and be equipped with electric circuit, include: the power supply comprises a power supply main power supply circuit and a super capacitor standby power circuit. The power supply main power supply circuit is composed of a transformer, a rectifier bridge and a voltage stabilizing circuit, and finally outputs direct current voltage through an anti-reverse diode to supply power for electric equipment.
According to different voltage requirements of the equipment, the output direct-current voltage required by the actual equipment can be obtained by adjusting the turn ratio of the transformer.
The super capacitor standby circuit is composed of a super capacitor charging circuit, a super capacitor discharging circuit, a main circuit voltage monitoring circuit and a super capacitor discharging enabling circuit.
The super capacitor charging circuit is charged by the main power supply circuit and always keeps a required voltage value.
The super capacitor discharge circuit is a BOOST voltage BOOST circuit. After the voltage on the super capacitor is boosted through the BOOST, the direct-current output voltage is obtained, the output of the standby power circuit can be ensured all the time, and seamless switching can be achieved when the main circuit is powered off.
The input of the main circuit voltage monitoring circuit is main circuit power supply voltage, the main circuit power supply voltage is input into the voltage monitoring circuit after being subjected to voltage division through a resistor, and the output VOUT of the monitoring circuit is connected with the super capacitor discharge enabling circuit. When the main circuit voltage is monitored to be capable of maintaining the normal operation of the equipment, namely the output voltage of the monitoring circuit is higher than a set threshold value, the monitoring circuit outputs a high level, otherwise, the monitoring circuit outputs a low level.
When the monitoring circuit outputs high level, the enabling circuit does not act, and the standby circuit does not output; otherwise, when the monitoring circuit outputs a low level, the enabling circuit acts, the standby circuit outputs a direct current voltage through the anti-reverse diode, and normal operation of equipment is guaranteed.
The super capacitor discharge enabling circuit consists of an MOS tube and a resistor. The source electrode of the N-type MOS tube VT1 is grounded, the drain electrode is connected with the output voltage of the discharge circuit through a third resistor R3, and is also connected with the grid electrode of the N-type MOS tube VT 2; the source electrode of the VT2 is grounded, the drain electrode is connected with the output voltage of the discharge circuit through a fourth resistor R4, and is also connected with the grid electrode of the P-type MOS tube VT 3; the source of VT3 is connected to the output voltage of the discharge circuit and the drain is connected to the anode of the anti-kickback diode D2.
Compared with the prior art, the beneficial effects of the utility model are that: a voltage-monitorable super capacitor standby power circuit applied to an electric power product is provided. The circuit can monitor the output voltage of the main circuit and judge whether to switch to the standby power supply circuit for power supply according to the output voltage. The proper threshold voltage is selected to ensure that when the output of the main circuit is normal, the equipment is powered by the main circuit, and when the output of the main circuit is abnormal or power failure occurs, the main circuit is switched to the super capacitor standby power circuit in time, so that seamless switching of standby power is ensured, unnecessary electric quantity loss is avoided, and the overall power supply efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings are an embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the principle of the drawings without creative efforts.
Fig. 1 is a schematic diagram of a super capacitor standby circuit according to an embodiment of the present invention;
FIG. 2 is an overall schematic frame diagram of the present invention;
description of reference numerals: r1 is a first resistor; r2 is a second resistor; r3 is a third resistor; r4 is a fourth resistor; GND is a GND end; d1 is a first anti-reverse diode; d2 is a second anti-reverse diode; VT1 is N-type MOS tube; VT2 is N-type MOS tube; VT3 is P-type MOS tube; e1 is a super capacitor; n1 is a voltage monitoring chip; n2 is BOOST chip; 12V' is the output voltage of the main circuit; 11.4V' is the output voltage of the super capacitor discharge circuit; 12V is the output direct current voltage of the main circuit after passing through the anti-reverse diode; 11.4V is the output direct current voltage of the super capacitor standby circuit after passing through the anti-reverse diode.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the utility model provides a but be applied to voltage monitoring super capacitor of electric power product and prepare for electric circuit, include: the power supply comprises a power supply main power supply circuit and a super capacitor standby power circuit. The power supply main power supply circuit is composed of a transformer, a rectifier bridge and a voltage stabilizing circuit, and finally outputs 12V direct current voltage through an anti-reverse diode D1 to supply power for electric equipment.
In a further embodiment, according to different voltage requirements of the equipment, the output direct-current voltage required by the actual equipment can be obtained by adjusting the turns ratio of the transformer.
The super capacitor standby circuit is composed of a super capacitor charging circuit, a super capacitor discharging circuit, a main circuit voltage monitoring circuit and a super capacitor discharging enabling circuit. When the main power supply circuit is monitored to be capable of maintaining normal operation of the equipment, the main power supply circuit does not participate in power supply, and when the voltage of the main power supply circuit drops below a threshold value, direct-current voltage is immediately output to maintain normal operation of the equipment.
Referring to fig. 1, the super capacitor discharge circuit according to the embodiment of the present invention is a BOOST voltage BOOST circuit. After the voltage 5V on the super capacitor is boosted by BOOST, the direct-current output voltage of 11.4V' is obtained, and the standby circuit always has the output voltage, so that seamless switching can be realized when the power failure of the main circuit is monitored.
In a further embodiment, parameters of the peripheral circuit can be adjusted according to the output voltage of the main circuit and different types of BOOST chips, so that a standby power output voltage meeting actual requirements is obtained.
Referring to fig. 1, the utility model discloses main circuit voltage monitoring circuit's input is main circuit supply voltage, and it inputs voltage monitoring circuit after through first resistor R1 and second resistor R2 partial pressure, and monitoring circuit's output VOUT links to each other with MOS pipe VT 1's grid. When the main circuit voltage can maintain the normal operation of the equipment, namely the output voltage is higher than the set threshold value, the monitoring circuit outputs a high level, otherwise, the monitoring circuit outputs a low level.
In a further embodiment, the resistances and other parameters of R1 and R2 may be adjusted according to the minimum voltage requirements allowed by different voltage monitoring chips and actual devices, so as to obtain a suitable voltage threshold.
Referring to fig. 1, the super capacitor discharge enable circuit according to the embodiment of the present invention is composed of a MOS transistor and a resistor. The source electrode of the N-type MOS tube VT1 is grounded, the drain electrode is connected with the output voltage 11.4V' of the discharge circuit through a third resistor R3, and is also connected with the grid electrode of the N-type MOS tube VT 2; the source electrode of the VT2 is grounded, the drain electrode is connected with the output voltage 11.4V' of the discharge circuit through a fourth resistor R4, and is also connected with the grid electrode of the P-type MOS tube VT 3; the source of the VT3 is connected to the output voltage 11.4V' of the discharge circuit and the drain is connected to the anode of the anti-reverse diode D2.
When the monitoring circuit outputs a high level, the VT1 gate source reaches a starting voltage, the VT1 is conducted, at the moment, the gate source voltage of the VT2 is 0, the VT2 is cut off, and the VT3 is further cut off, namely when the main circuit voltage is higher than a set threshold value, the standby circuit does not output; when the monitoring circuit outputs a low level, the gate-source voltage of VT1 is 0, the VT1 is cut off, at this time, the gate-source voltage of 11.4V 'through the resistor R3 and VT2 reaches the starting voltage, VT2 is conducted, further the drain of VT2 is low level to ground, the VT3 is conducted, 11.4V' passes through the anti-reverse diode D2, and 11.4V direct current voltage is output to the equipment, namely when the main circuit voltage is lower than a set threshold value, the output voltage of the standby circuit maintains the normal operation of the equipment.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (3)
1. A voltage monitorable super capacitor standby circuit applied to an electric power product comprises: the super-capacitor standby power supply circuit is characterized by comprising a super-capacitor charging circuit, a super-capacitor discharging circuit, a main circuit voltage monitoring circuit and a super-capacitor discharging enabling circuit.
2. The voltage monitorable super capacitor standby circuit applied to the power product of claim 1, wherein a main circuit output voltage of the main circuit voltage monitoring circuit is divided by a first resistor R1 and a second resistor R2 and then input to the voltage monitoring circuit, an output VOUT of the circuit is connected with a grid electrode of a metal oxide semiconductor (VT) 1, when the main circuit voltage can maintain normal operation of the device, namely the output voltage is higher than a set threshold value, the circuit outputs a high level, otherwise, the circuit outputs a low level.
3. The voltage monitorable super capacitor standby circuit applied to the electric power product of claim 1, wherein the source of the N-type MOS transistor VT1 of the super capacitor discharge enabling circuit is grounded, the drain is connected to the output voltage of the discharge circuit through a third resistor R3 and is connected to the gate of the N-type MOS transistor VT 2; the source electrode of the VT2 is grounded, the drain electrode is connected with the output voltage of the discharge circuit through a fourth resistor R4, and is also connected with the grid electrode of the P-type MOS tube VT 3; the source of VT3 is connected to the output voltage of the discharge circuit and the drain is connected to the anode of the anti-kickback diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590658.3U CN211790940U (en) | 2020-04-18 | 2020-04-18 | Voltage-monitorable super capacitor standby circuit applied to electric power product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590658.3U CN211790940U (en) | 2020-04-18 | 2020-04-18 | Voltage-monitorable super capacitor standby circuit applied to electric power product |
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| Publication Number | Publication Date |
|---|---|
| CN211790940U true CN211790940U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020590658.3U Active CN211790940U (en) | 2020-04-18 | 2020-04-18 | Voltage-monitorable super capacitor standby circuit applied to electric power product |
Country Status (1)
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|---|---|
| CN (1) | CN211790940U (en) |
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2020
- 2020-04-18 CN CN202020590658.3U patent/CN211790940U/en active Active
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