CN110601349A - Switch power supply system - Google Patents
Switch power supply system Download PDFInfo
- Publication number
- CN110601349A CN110601349A CN201910884501.3A CN201910884501A CN110601349A CN 110601349 A CN110601349 A CN 110601349A CN 201910884501 A CN201910884501 A CN 201910884501A CN 110601349 A CN110601349 A CN 110601349A
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- Prior art keywords
- ups
- power
- power supply
- resistor
- switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The switch power supply system disclosed by the invention can achieve the purpose of monitoring the UPS in real time through the power failure detection circuit, the battery electric quantity metering chip, the controller, the electronic switch, the alarm and the connection combination among the power failure detection circuit, the battery electric quantity metering chip, the controller, the electronic switch and the alarm, and can alarm when the UPS is in a mains supply power failure state, so that related personnel can be reminded in time. When the UPS is in a power failure state, in order to avoid the situation that the UPS continuously outputs electric energy to cause electric quantity exhaustion, the electronic switch is connected with the controller, when the electric quantity of the battery of the UPS measured by the battery electric quantity measuring chip is lower than a threshold value, the controller controls the electronic switch to be disconnected to cut off a power supply circuit of the UPS, at the moment, the UPS cannot continuously discharge outwards, and the situation that the service life of the UPS is influenced by the electric quantity exhaustion is avoided.
Description
Technical Field
The invention relates to the field of network communication, in particular to a power supply system of a switch.
Background
With the rapid development of internet technology, people's daily life is more and more unable to leave networks, and the switch, as an important device for completing information exchange in a communication system, can be connected with networks of the same type, and can also play an interconnection role between networks of different types, and the stability of the performance of the switch is crucial to the stability of the network.
Generally, the switch is directly powered by the mains supply, and when the mains supply is suddenly powered off, the switch immediately is in a power failure state, so that the whole network is interrupted. In order to avoid the situation that the switch can be in a non-working state when the mains supply is powered off, the switch can be supplied with Power by an Uninterruptible Power Supply (UPS). When the mains supply is input normally, the UPS supplies the mains supply to the switchboard for use after stabilizing the voltage of the mains supply, and the UPS is an alternating current mains supply voltage stabilizer and also charges a battery in the UPS; when the commercial power is interrupted, the UPS immediately supplies the 220V alternating current to the exchanger by the electric energy of the battery in the UPS through an inversion conversion method, so that the aim of supplying power to the exchanger uninterruptedly is fulfilled.
When the utility power is interrupted, although the UPS power can continue to supply power to the switch by using the battery in the main body, the battery capacity of the battery in the UPS power is also limited, and if the utility power is interrupted for a long time and the UPS power continuously discharges, the battery capacity in the UPS power is exhausted, which affects the service life of the UPS power.
Therefore, how to monitor the power state of the UPS power source in real time and avoid the problem that the battery power inside the UPS power source is exhausted and the service life of the UPS power source is further affected due to continuous discharge of the UPS power source when the utility power is interrupted for a long time is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to disclose a power supply system of a switch, which can monitor the power supply state of a UPS (uninterrupted power supply) in real time and give an alarm in time, and simultaneously avoid the problem that the service life of the UPS is influenced because the battery power in the UPS is exhausted due to the continuous discharge of the UPS when the commercial power is interrupted for a long time.
In order to achieve the above purpose, the embodiment of the invention discloses the following technical scheme:
the embodiment of the invention discloses a switch power supply system, which comprises:
the UPS power supply is connected with the power input end of the switch body and is used for supplying power to the switch body uninterruptedly;
the rectifying circuit is connected with the electric energy output end of the UPS;
the battery electric quantity metering chip is connected with the rectifying circuit and is used for metering the electric quantity of the battery in the UPS;
the controller is connected with the battery electric quantity metering chip and is used for controlling the battery electric quantity metering chip to meter the electric quantity of the battery;
the electronic switch is connected with the controller and used for controlling the electronic switch to be disconnected so as to cut off a power supply circuit for supplying power to the switchboard body by the UPS when the electric quantity of the battery is lower than a threshold value;
the power failure detection circuit is connected to a circuit loop of the UPS and the controller and is used for detecting the power failure of the mains supply of the UPS;
and the alarm is connected with the controller and used for alarming when the UPS is in a mains supply power failure state.
Optionally, the power failure detection circuit specifically includes:
the filtering module is connected to a circuit loop of the UPS and the commercial power;
the power failure detection device comprises an isolation module connected with the filtering module and a power failure detection module connected with the isolation module.
Optionally, the filtering module specifically includes: the circuit comprises a first resistor, a diode, a second resistor and a capacitor;
a first end of the first resistor is connected with a voltage output end of the UPS power supply, and a second end of the first resistor is connected with an anode of the diode;
the cathode of the diode is respectively connected with the first end of the second resistor and the first end of the capacitor, the second end of the second resistor is connected with the second end of the capacitor, and the second end of the second resistor and the second end of the capacitor are both connected with the negative electrode of the UPS power supply.
Optionally, the isolation module specifically includes: a third resistor, a fuse and an optocoupler;
the first end of the third resistor is respectively connected with the first end of the capacitor and the first end of the second resistor;
the second end of the third resistor is connected with the first end of the fuse;
the second end of the fuse is connected with the anode of a photosensitive diode in the optical coupler;
and the cathode of the photosensitive diode is respectively connected with the second end of the capacitor and the second end of the second resistor.
Optionally, the power failure detection module specifically includes: the power supply unit, the fourth resistor and the power failure detection bit;
the first end of the fourth resistor is connected with the power supply unit;
the second end of the fourth resistor is respectively connected with a collector of a bipolar transistor of the optocoupler and the power failure detection position;
the emitter of the bipolar transistor is grounded; the power failure detection bit is connected with the controller.
Optionally, the alarm is specifically a buzzer and/or a red-blue lamp.
Optionally, the method further includes: and the display device is connected with the controller and used for displaying the electric quantity of the battery.
Optionally, the electronic switch is specifically a relay, a control circuit of the relay is connected to the controller, and a main circuit of the relay is connected to a power supply circuit of the UPS power supply for supplying power to the switch body.
Optionally, the model of the battery power metering chip is specifically AD 7755.
The invention discloses a power supply system of a switch, wherein a UPS (uninterrupted power supply) connected with a power supply input end of a switch body supplies power to the switch body uninterruptedly, a battery electric quantity metering chip connected with a rectifying circuit connected with an electric energy output end of the UPS measures the electric quantity of a battery in the UPS, a controller connected with the battery electric quantity metering chip controls the battery electric quantity metering chip to meter the electric quantity of the battery of the UPS, in addition, a power failure detection circuit connected with a circuit loop of the UPS is also connected with the controller to detect the power failure of mains supply to the UPS, and an alarm connected with the power failure detection circuit alarms when the UPS is in the power failure of the mains supply. When the UPS is in a power failure state, in order to avoid the situation that the UPS continuously outputs electric energy to cause electric quantity exhaustion, the electronic switch is connected with the controller, when the electric quantity of the battery of the UPS measured by the battery electric quantity measuring chip is lower than a threshold value, the controller controls the electronic switch to be disconnected to cut off a power supply circuit of the UPS, at the moment, the UPS cannot continuously discharge outwards, and the situation that the service life of the UPS is influenced by the electric quantity exhaustion is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system of a switch according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power failure detection circuit in a power supply system of a switch according to a second embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a power failure detection circuit in a power supply system of a switch according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power supply system of a switch according to a third embodiment of the present invention.
Reference numerals:
1: a switch power system; 2: a switch body; 10: a UPS power supply; 20: a rectifying circuit; 30: a battery electric quantity metering chip; 40: a controller; 50: an electronic switch; 60: a power-down detection circuit; 70: an alarm; 100: a filtering module; 101: an isolation module; 102: a power failure detection module; 80: a display device.
R1: a first resistor; r2: a second resistor; d1: a diode; c1: a capacitor; r3: a third resistor; FU: a fuse; OC: an optical coupler; d2: a light emitting diode; q1: a bipolar transistor; r4: a fourth resistor; 1020: a power down detection bit.
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.
Example one
In an embodiment of the present invention, a technical solution of the present invention is described with reference to fig. 1, please refer to fig. 1, where fig. 1 is a schematic structural diagram of a switch power supply system disclosed in a first embodiment of the present invention, and the switch power supply system 1 includes: and the UPS power supply 10 is connected with the power input end of the switch body 2 and is used for supplying power to the switch body 2 uninterruptedly.
And a rectification circuit 20 connected to a power output terminal of the UPS power supply 10.
And a battery charge metering chip 30 connected to the rectifying circuit 20 for metering the battery charge of the UPS power supply 10.
And a controller 40 connected to the battery power metering chip 30 for controlling the battery power metering chip 30 to meter the battery power.
And the electronic switch 50 is connected with the controller 40 and is used for controlling the electronic switch 50 to be disconnected so as to cut off a power supply circuit for supplying power to the switch body 2 by the UPS (uninterrupted power supply) 10 when the battery power is lower than a threshold value.
And a power-down detection circuit 60, which is connected to the circuit loop of the UPS power supply 10 and is connected to the controller 40, and is used for performing mains power-down detection on the UPS power supply 10.
And the alarm 70 is connected with the controller 40 and is used for alarming when the UPS 10 is in a mains power failure state.
Specifically, in the present embodiment, the structure of the UPS power supply 10 is not an improvement of the embodiment of the present invention, and the specific structure thereof can be referred to in the prior art.
In addition, further describing the connection relationship in fig. 1, the power failure detection circuit 60 is connected to the electronic switch 50 in addition to the controller 40. Meanwhile, the UPS power source 10 is connected to the controller 40, the power failure detection circuit 60, and the like, for supplying power thereto. The rectifying circuit 20, the battery electricity metering chip 30, the controller 40, the electronic switch 50, the power failure detection circuit 60 and the alarm 70 may be integrated on a circuit board and packaged in a housing.
The rectifier circuit 20 is used for converting alternating current into direct current, the rectifier circuit 20 generally comprises a transformer, a rectifier main circuit and a filter, the transformer converts the voltage output by the UPS power supply 10 into a voltage suitable for each circuit, the type of the rectifier circuit in the embodiment of the present invention may be a full-wave rectifier circuit, and the rectifier circuit generally comprises two rectifier diodes; a half-wave rectifier circuit, which generally consists of a rectifier diode to form a set of rectifier circuits; a bridge rectifier circuit, which generally includes four rectifier diodes to form a set of rectifier circuits; a voltage doubler rectifier circuit, which generally consists of at least two rectifier diodes forming a set of rectifier circuits. It should be noted that the specific structure of the rectifier circuit 20 is not the improvement of the present invention, and specifically, refer to the prior art.
The battery power metering chip 30 meters the battery power in the UPS power supply 10, the model of the battery power metering chip 30 may be AD7755, CS5463, or the like, and the specific model of the battery power chip 30 is not limited in the embodiments of the present invention as long as it is ensured that the battery power in the UPS power supply 10 can be metered. As an alternative embodiment of the present invention, the model of the battery power metering chip 30 is specifically AD 7755.
The controller 40 may be an FPGA programmable logic device, a single chip microcomputer, or the like, the type of the single chip microcomputer and the type of the FPGA programmable logic device may be selected according to actual needs, the type of the controller 40 is not limited in the embodiment of the present invention, and in addition, the structure of the controller 40 is not an improvement of the embodiment of the present invention, and the specific structure thereof may refer to the prior art.
The electronic switch 50 may be a thyristor, a relay, a transistor, a field effect transistor, etc., the electronic switch 50 is matched with the controller 40, when the battery power measured by the battery power measuring chip 30 is lower than a threshold, the controller 40 controls the electronic switch 50 to disconnect the power supply circuit for the switch body 2 by the UPS power supply 10, if the electronic switch 50 is a semiconductor device such as a fet, a transistor, a thyristor, etc., the electronic switch 50 corresponds to a cutoff threshold, the controller 40 is also provided with a threshold for disconnecting the battery power corresponding to the electronic switch 50, and when the battery power is lower than the threshold, the controller 40 sends an instruction to switch the electronic switch 50 from the on state to the off state, so that the power supply circuit formed by the UPS power supply 10 and the switch body 2 is disconnected. If the electronic switch 50 is a relay, a threshold value for disconnecting the battery capacity corresponding to the electronic switch 50 is provided in the controller 40, and when the battery capacity is lower than the threshold value, the controller 40 controls the normally closed contact of the relay connected to the power supply circuit formed between the UPS power supply 10 and the switch body 2 to be disconnected, so that the power supply circuit formed between the UPS power supply 10 and the switch body 2 is disconnected, and the power supply loss caused by continuous discharge of the UPS power supply 10 is avoided.
As an alternative embodiment of the present invention, the electronic switch 50 is specifically a relay, a control loop of the relay is connected to the controller 40, and a main loop of the relay is connected to a power supply circuit for supplying power to the switch body from the UPS power source.
The size of the threshold may be determined according to the battery capacity in the UPS power source, and in the embodiment of the present invention, the size of the threshold may be set to 10% of the battery capacity in the UPS power source. It should be noted that the size of the threshold may be determined according to actual situations, and the embodiment of the present invention is not limited herein.
The power failure detection circuit 60 may adopt a power failure detection circuit in the prior art to implement the power failure detection of the utility power in the embodiment of the present invention. In this embodiment, in order to improve the accuracy of the power failure detection circuit 60 in detecting the commercial power, as an optional embodiment of the present invention, the power failure detection circuit 60 specifically includes: the UPS comprises a filtering module connected to a circuit loop of the UPS 10 and the commercial power, an isolation module connected with the filtering module and a power failure detection module connected with the isolation module.
The filtering module specifically includes: the circuit comprises a first resistor, a diode, a second resistor and a capacitor.
The first end of the first resistor is connected with the voltage output end of the UPS power supply 10, the second end of the first resistor is connected with the anode of the diode, the cathode of the diode is respectively connected with the first end of the second resistor and the first end of the capacitor, the second end of the second resistor is connected with the second end of the capacitor, and the second end of the second resistor and the second end of the capacitor are both connected with the cathode of the UPS power supply.
The isolation module specifically includes: third resistance, fuse and opto-coupler.
The first end of the third resistor is respectively connected with the first end of the capacitor and the first end of the second resistor.
The second end of the third resistor is connected to the first end of the fuse.
The second end of the fuse is connected with the anode of a photosensitive diode in the optical coupler;
and the cathode of the photosensitive diode is respectively connected with the second end of the capacitor and the second end of the second resistor.
The power failure detection module specifically comprises: the power supply unit, the fourth resistor and the power failure detection bit.
The first end of the fourth resistor is connected with the power supply unit, and the second end of the fourth resistor is respectively connected with the collector of the bipolar transistor of the optocoupler and the power failure detection position.
The emitter of the bipolar transistor is grounded.
The power down detection bit is coupled to the controller 40.
In this optional embodiment, the power supply unit may be a 5V power supply, taking the controller 40 as a 51-chip microcomputer as an example, when the UPS power supply 10 is connected to the mains supply, the mains supply passes through the first resistor and the diode and then is connected to the optocoupler and then is input to the 51-chip microcomputer through the power failure detection module, and when the 220V mains supply does not power down, the power failure count interrupted by the timer of the 51-chip microcomputer does not exceed the power failure threshold; when the 220V commercial power is powered down, the power down detection circuit 60 will continuously output an electrical signal of 5V, and the power down count of the timer interrupt will exceed the power down threshold. When the power-down count interrupted by the timer exceeds the power-down threshold, it indicates that the commercial power connected to the UPS power supply 10 is powered down, and at this time, the controller 40 controls the alarm to alarm.
After the mains supply is powered off, the UPS 10 supplies power to the switch body 2, the battery capacity of the UPS 10 is monitored in real time by the battery capacity metering chip 30, and when the battery capacity is lower than a threshold value, the electronic switch 50 is controlled to be disconnected by the single chip microcomputer 51 to interrupt the UPS to continuously supply power to the switch body 2.
It should be noted that, the battery power metering chip 30 in the embodiment of the present invention continuously monitors the battery power of the UPS power supply 10, and the battery power is not monitored only when the UPS power supply 10 supplies power to the switch body 2, and in addition, the voltage output terminal of the UPS power supply is connected to the power failure detection circuit 60, and the voltage input terminal of the UPS power supply 10 is connected to the commercial power output terminal.
The alarm 70 may be a red and blue lamp, a buzzer, etc., and in order to further improve the alarm effect, as an optional embodiment of the present invention, the alarm 70 is specifically a red and blue lamp and a buzzer, and when the mains supply is powered off, the red and blue lamp and the buzzer are combined to alarm. Of course, any one of a red and blue light or a buzzer can be used for alarming.
In the power supply system of the switch, the UPS connected with the power input end of the switch body supplies power to the switch body uninterruptedly, the battery electric quantity metering chip connected with the rectifying circuit connected with the electric energy output end of the UPS meters the battery electric quantity in the UPS, the controller connected with the battery electric quantity metering chip controls the battery electric quantity metering chip to meter the battery electric quantity of the UPS, in addition, the power failure detection circuit connected with the controller and connected with the circuit loop of the UPS is also used for detecting the power failure of the mains supply at the inlet wire of the UPS, and the alarm connected with the power failure detection circuit is used for alarming when the UPS is in the power failure state of the mains supply. When the UPS is in a power failure state, in order to avoid the situation that the UPS continuously outputs electric energy to cause electric quantity exhaustion, the electronic switch is connected with the controller, when the electric quantity of the battery of the UPS measured by the battery electric quantity measuring chip is lower than a threshold value, the controller controls the electronic switch to be disconnected to cut off a power supply circuit of the UPS, at the moment, the UPS cannot continuously discharge outwards, and the situation that the service life of the UPS is influenced by the electric quantity exhaustion is avoided.
Example two
On the basis of the first embodiment, in order to describe the power failure detection circuit disclosed by the present invention in detail, the power failure detection circuit of the present invention is described below with reference to fig. 2 and 3, please refer to fig. 2 and 3, fig. 2 is a schematic structural diagram of a power failure detection circuit in a switch power supply system disclosed by a second embodiment of the present invention, and fig. 3 is a schematic structural diagram of a circuit of a power failure detection circuit in a switch power supply system disclosed by a second embodiment of the present invention.
The power down detection circuit 50 specifically includes: the UPS comprises a filtering module 100 connected with a power output end of the UPS 10, an isolation module 101 connected with the filtering module 100 and a power failure detection module 102 connected with the isolation module 101.
The filtering module 100 includes: the circuit comprises a first resistor R1, a diode D1, a second resistor R2 and a capacitor C1.
The first end of the first resistor R1 is connected with the power output end of the UPS 10, the second end of the first resistor R1 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the first end of the second resistor R2 and the first end of the capacitor C1 respectively, the second end of the second resistor R2 is connected with the second end of the capacitor C1, and the second end of the second resistor R2 and the second end of the capacitor C1 are both connected with the cathode of the UPS.
The isolation module 101 specifically includes: third resistance R3, fuse FU and opto-coupler OC.
A first end of the third resistor R3 is respectively connected with a first end of the capacitor C1 and a first end of the second resistor R2;
a second terminal of third resistor R3 is connected to a first terminal of fuse FU;
a second terminal of fuse FU is connected to the anode of a photodiode D2 in optocoupler 0C.
The cathode of the photodiode D2 is connected to the second terminal of the capacitor C1 and the second terminal of the second resistor R2, respectively.
The power failure detection module 102 specifically includes: a power supply unit VCC and a fourth resistor R4.
A first end of the fourth resistor R4 is connected to the power supply unit VCC, and a second end of the fourth resistor R4 is connected to a collector of a bipolar transistor Q1 of the optocoupler OC and the power-down detection bit 1020, respectively;
the emitter of the bipolar transistor Q1 is grounded.
Power down detection bit 1020 is coupled to controller 40.
Specifically, in this embodiment, specific model sizes of the first resistor R1, the second resistor R2, the third resistor R3, the diode D1, the optocoupler OC, the fuse FU, and the capacitor C1 may be determined according to a model of the UPS power supply. The specific model size is not limited in the embodiment of the invention.
The voltage of the power supply unit VCC may be 5V in the embodiment of the present invention.
The second embodiment of the invention discloses a power failure detection circuit, which consists of a filtering module, an isolation module and a power failure detection module, wherein before the power failure detection module detects the power failure of mains supply incoming lines of a UPS (uninterrupted power supply), signal clutter is removed through the filtering module and external interference signals are isolated through the isolation module, so that the power failure detection module is ensured to carry out high-precision mains supply power failure detection, and the precision of the power failure detection module for detecting the power failure of the mains supply is improved.
EXAMPLE III
On the basis of the above embodiments, in order to facilitate the relevant personnel to know the battery capacity of the battery in the UP power supply, the present invention discloses a third embodiment, please refer to fig. 4, fig. 4 is a schematic structural diagram of a power supply system of an exchange board disclosed by the third embodiment of the present invention, and the power supply system 1 of the exchange board further includes: and a display device 80 connected to the controller 40 for displaying the battery level.
Specifically, in this embodiment, the same parts as those in the above embodiment can be referred to the above embodiment, and the third embodiment of the present invention is not described herein again.
The display device 80 may be an LED display, a nixie tube, an LCD display, or the like.
The switch power supply system disclosed by the third embodiment of the invention can achieve the purpose of monitoring the UPS in real time, and can alarm by the alarm when the UPS is in a mains supply power-off state so as to remind related personnel in time. When the UPS is in a power failure state, in order to avoid the situation that the UPS continuously outputs electric energy to cause electric quantity depletion, the electronic switch connected with the controller in the invention controls the electronic switch to be disconnected by the controller to cut off a power supply circuit of the UPS when the electric quantity of the battery of the UPS measured by the battery electric quantity measuring chip is lower than a threshold value, at the moment, the UPS cannot continuously discharge outwards any more, the influence on the service life of the UPS caused by electric quantity depletion is avoided, in addition, a display device connected with the controller can display the electric quantity of the battery in the UPS in real time, and therefore, related personnel can conveniently know the energy consumption condition of the battery in the UPS in real time.
It should be noted that the above embodiments only exemplify the improved parts made by the present invention, and for other parts of the switch power supply system and the switch not mentioned, reference may be made to the prior art, and not represented.
The switch power supply system disclosed by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A switch power system, comprising: the UPS power supply is connected with the power input end of the switch body and is used for supplying power to the switch body uninterruptedly;
the rectifying circuit is connected with the electric energy output end of the UPS;
the battery electric quantity metering chip is connected with the rectifying circuit and is used for metering the electric quantity of the battery in the UPS;
the controller is connected with the battery electric quantity metering chip and is used for controlling the battery electric quantity metering chip to meter the electric quantity of the battery;
the electronic switch is connected with the controller and used for controlling the electronic switch to be disconnected so as to cut off a power supply circuit for supplying power to the switchboard body by the UPS when the electric quantity of the battery is lower than a threshold value;
the power failure detection circuit is connected to a circuit loop of the UPS and the controller and is used for detecting the power failure of the mains supply of the UPS;
and the alarm is connected with the controller and used for alarming when the UPS is in a mains supply power failure state.
2. The switch power supply system according to claim 1, wherein the power down detection circuit specifically includes:
the filtering module is connected into a circuit loop of the UPS and the commercial power;
the power failure detection device comprises an isolation module connected with the filtering module and a power failure detection module connected with the isolation module.
3. The switch power supply system according to claim 2, wherein the filtering module specifically includes: the circuit comprises a first resistor, a diode, a second resistor and a capacitor;
a first end of the first resistor is connected with a voltage output end of the UPS power supply, and a second end of the first resistor is connected with an anode of the diode;
the cathode of the diode is respectively connected with the first end of the second resistor and the first end of the capacitor, the second end of the second resistor is connected with the second end of the capacitor, and the second end of the second resistor and the second end of the capacitor are both connected with the negative electrode of the UPS power supply.
4. The switch power system of claim 3, wherein the isolation module specifically comprises: a third resistor, a fuse and an optocoupler;
the first end of the third resistor is respectively connected with the first end of the capacitor and the first end of the second resistor;
the second end of the third resistor is connected with the first end of the fuse;
the second end of the fuse is connected with the anode of a photosensitive diode in the optical coupler;
and the cathode of the photosensitive diode is respectively connected with the second end of the capacitor and the second end of the second resistor.
5. The switch power supply system according to claim 4, wherein the power-down detection module specifically includes: the power supply unit, the fourth resistor and the power failure detection bit;
the first end of the fourth resistor is connected with the power supply unit;
the second end of the fourth resistor is respectively connected with a collector of a bipolar transistor of the optocoupler and the power failure detection position;
the emitter of the bipolar transistor is grounded; the power failure detection bit is connected with the controller.
6. Switch power supply system according to claim 1, characterized in that the alarm is in particular a buzzer and/or a red-blue light.
7. The switch power system according to any one of claims 1-6, further comprising: and the display device is connected with the controller and used for displaying the electric quantity of the battery.
8. The switch power supply system according to claim 7, wherein the electronic switch is a relay, a control loop of the relay is connected to the controller, and a main loop of the relay is connected to a power supply circuit of the UPS power supply for supplying power to the switch body.
9. The switch power supply system according to claim 1, wherein the battery power metering chip is of a type AD 7755.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884501.3A CN110601349A (en) | 2019-09-19 | 2019-09-19 | Switch power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884501.3A CN110601349A (en) | 2019-09-19 | 2019-09-19 | Switch power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN110601349A true CN110601349A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910884501.3A Pending CN110601349A (en) | 2019-09-19 | 2019-09-19 | Switch power supply system |
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| Country | Link |
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| CN (1) | CN110601349A (en) |
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2019
- 2019-09-19 CN CN201910884501.3A patent/CN110601349A/en active Pending
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191220 |
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| WD01 | Invention patent application deemed withdrawn after publication |