CN202309200U - Controller power supply circuit of uninterrupted power supply and uninterrupted power supply - Google Patents

Abstract

The utility model discloses a controller power supply circuit of an uninterrupted power supply and an uninterrupted power supply. A power supply and an external power supply are supplied to a controller respectively after being rectified. When one of the power supply fails and once one power supply is normal, power can be supplied to the controller, so that the phenomenon of out-of-control of the controller due to a power failure is avoided, system running is ensured, and the running reliability of a system is enhanced.

Description

A kind of uninterruptible power supply controller power supply circuit and uninterruptible power supply

technical field

The utility model relates to a power supply circuit and an uninterruptible power supply, in particular to a controller power supply circuit of the uninterruptible power supply and the uninterruptible power supply.

Background technique

Uninterruptible power supply, that is, UPS, is widely used to supply power to key loads, to ensure that the load can be powered by auxiliary power supply when the main power supply fails, and to achieve uninterrupted power supply for loads. This requires ensuring that the internal controller of the uninterruptible power supply has a good Power supply. At present, the controller inside the uninterruptible power supply is powered by an independent external power supply. When the external power supply fails, it cannot supply power to the controller, and the controller fails, which affects the operation of the system.

Utility model content

Aiming at the problem that the internal controller of the uninterruptible power supply is powered by an independent external power supply, and the failure of the controller caused by the failure of the external power supply, the utility model provides a power supply circuit for the controller and an uninterruptible power supply, which can effectively solve the failure of the controller when the external power supply fails. The problem.

A controller power supply circuit of an uninterruptible power supply, the controller power supply circuit includes an external power supply for supplying power to the controller, a switching power supply for stepping down, and a third rectifying unit corresponding to the external power supply, the third The input end of the rectification unit is connected to the external power supply, the output end of the third rectification unit is connected to the input end of the switching power supply, the output end of the switching power supply is connected to the controller, and the controller power supply circuit also includes a A power supply for the load and a rectification unit corresponding to the power supply, the input end of the rectification unit is connected to the power supply, and the input end of the switching power supply is also connected to the output end of the rectification unit. the

Further, the power supply includes a first power supply and a first rectification unit corresponding to the first power supply, the input terminal of the first rectification unit is connected to the first power supply, and the output terminal of the first rectification unit is connected to the switching power supply connected to the input.

Further, the power supply includes a second power supply and a second rectification unit corresponding to the second power supply, the input terminal of the second rectification unit is connected to the second power supply, and the output terminal of the second rectification unit is connected to the switching power supply connected to the input.

Further, the power supply includes a first power supply and a second power supply, a first rectification unit corresponding to the first power supply, and a second rectification unit corresponding to the second power supply, the input terminal of the first rectification unit is connected to the first power supply The output end of the first rectification unit is connected to the input end of the switching power supply, the input end of the second rectification unit is connected to the second power supply, and the output end of the second rectification unit is connected to the input end of the switching power supply .

Further, the first power source is an AC power grid.

Further, the second power source is an energy storage device.

Further, the first rectification unit includes a first rectification bridge, the second rectification unit includes a second rectification bridge, the third rectification unit includes a third rectification bridge, the first rectification bridge, the second rectification bridge and the third rectification bridge The bridges each include a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal and the second input terminal of the first rectifier bridge are connected to the first power supply, and the second rectifier bridge The first input end and the second input end of the bridge are connected with the second power supply, the first input end and the second input end of the third rectification bridge are connected with the external power supply, and the first rectification bridge, the second rectification bridge and the The first output terminals of the third rectifier bridge are all connected to the input terminals of the switching power supply, and the second output terminals of the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are all connected to the power supply ground.

Further, the controller power supply circuit of the uninterruptible power supply also includes a filter unit, and the filter unit includes a filter capacitor, and the first output terminals of the first rectifier bridge, the second rectifier bridge, and the third rectifier bridge are all connected to the filter The positive poles of the capacitors are connected, and the negative poles of the filter capacitors are connected to the power ground.

Further, the controller power supply circuit also includes a first display unit, a second display unit and a third display unit respectively corresponding to the first power supply, the second power supply and the external power supply, and the first display unit includes a first resistor and the first light emitting diode, one end of the first resistor is connected to the first input end of the first rectifier bridge, the other end of the first resistor is connected to the anode of the first light emitting diode, and the cathode of the first light emitting diode connected to the second input end of the first rectifier bridge; the second display unit includes a second resistor and a second light emitting diode, one end of the second resistor is connected to the first input end of the second rectifier bridge, and the first The other end of the two resistors is connected to the anode of the second light emitting diode, and the cathode of the second light emitting diode is connected to the second input end of the second rectifier bridge; the third display unit includes a third resistor and a third light emitting diode, One end of the third resistor is connected to the first input end of the third rectifier bridge, the other end of the third resistor is connected to the anode of the third light-emitting diode, and the cathode of the third light-emitting diode is connected to the third rectifier bridge connected to the second input.

Further, the controller power supply circuit also includes an output display unit, the output display unit includes a fourth resistor, a fifth resistor and a fourth light-emitting diode, one end of the fourth resistor is connected to the positive pole of the filter capacitor, and the fourth resistor The other end of the resistor is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to the anode of the fourth light emitting diode, and the cathode of the fourth light emitting diode is connected to the power ground.

Further, the switching power supply adopts SPD121201, the first input terminal of the switching power supply is connected to one end of the fourth resistor, the second input terminal of the switching power supply is connected to the power ground, and the output terminal of the switching power supply is connected to the control connected to the device.

An uninterruptible power supply, the uninterruptible power supply includes a controller and the above controller power supply circuit, the controller is connected with the output terminal of the switching power supply.

The utility model provides a controller power supply circuit of an uninterruptible power supply and an uninterruptible power supply. The power supply and the external power supply respectively supply power to the controller through rectification, so as to avoid the failure of the controller due to power failure when the external power supply fails, and ensure the operation of the system.

Description of drawings

Fig. 1 is a structural schematic diagram of a controller power supply circuit of an uninterruptible power supply provided by the utility model.

Fig. 2 is a schematic structural diagram of a controller power supply circuit of an uninterruptible power supply provided by another embodiment of the present invention.

Fig. 3 is a specific circuit schematic diagram of an uninterruptible power supply controller power supply circuit provided by the utility model.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in accompanying drawing 1, a kind of controller power supply circuit of uninterruptible power supply, described controller power supply circuit comprises the external power supply 3 that is used to supply power for controller 6, the switch power supply 5 that is used for step-down and corresponding to external power supply The third rectification unit 103, the input terminal of the third rectification unit 103 is connected with the external power supply 3, the output terminal of the third rectification unit 103 is connected with the input terminal of the switching power supply 5, and the output terminal of the switching power supply 5 is connected with the controller 6, , the controller power supply circuit includes a power supply A for supplying power to the load 8 and a rectification unit B corresponding to the power supply A, the input terminal of the rectification unit B is connected to the power supply A, and the input terminal of the switching power supply 5 is also connected to the rectification unit B connected to the output.

The uninterruptible power supply is used to supply power to key loads, and includes an energy storage device inside to ensure that the load uses the internal energy storage device to supply power to the load when the main power supply fails, so as to realize the uninterrupted power supply of the load. The internal control of the uninterruptible power supply in the prior art The device is powered by an external power supply.

As shown in Figure 2, preferably, the power supply A includes a first power supply 1 and a first rectification unit 101 corresponding to the first power supply 1, the input terminal of the first rectification unit 101 is connected to the first power supply 1, and the first rectification unit The output terminal of 101 is connected with the input terminal of switching power supply 5 .

Preferably, the power supply A includes a second power supply 2 and a second rectification unit 102 corresponding to the second power supply, the input terminal of the second rectification unit 102 is connected to the second power supply 2, and the output terminal of the second rectification unit 102 is connected to the switching power supply 5 connected.

Preferably, the power supply A may also include a first power supply 1 and a second power supply 2, a first rectification unit 101 corresponding to the first power supply 1 and a second rectification unit 102 corresponding to the second power supply 2, and the first rectification unit 101 The input end is connected to the first power supply 1, the output end of the first rectification unit 101 is connected to the input end of the switching power supply 1, the input end of the second rectification unit 102 is connected to the second power supply 2, and the output end of the second rectification unit 102 is connected to the second power supply 2. The input terminals of the switching power supply 5 are connected.

Preferably, the first power supply 1 is an AC power grid, that is, the main power supply that supplies power to loads, and the second power supply 2 is an energy storage device, that is, an energy storage device inside the uninterruptible power supply, and the energy storage device inside the uninterruptible power supply includes an energy storage battery and an inverter, the direct current of the energy storage battery is converted into alternating current through the inverter, and the external power supply 3 is a 220V alternating current power supply.

As shown in accompanying drawing 3, the first rectifying unit 101 comprises a first rectifying bridge, the second rectifying unit 102 comprises a second rectifying bridge, the third rectifying unit 103 comprises a third rectifying bridge, the first rectifying bridge, the second rectifying bridge and The third rectifier bridges each include a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal and the second input terminal of the first rectifier bridge are connected to the first power supply 1, and the second rectifier bridge The first input end and the second input end of the bridge are connected with the second power supply 2, the first input end and the second input end of the third rectification bridge are connected with the external power supply 3, and the first rectification bridge, the second rectification bridge and the The first output terminals of the third rectifier bridge are all connected to the input terminals of the switching power supply 5 , and the second output terminals of the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are all connected to the power ground.

Preferably, the controller power supply circuit also includes a filter unit 4 for filtering, and the filter unit 4 includes a filter capacitor C, and the first output terminals of the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are all connected to the filter capacitor C. The positive pole is connected, and the negative pole of the filter capacitor C is connected to the power ground.

The controller power supply circuit also includes a first display unit 11, a second display unit 12 and a third display unit 13 corresponding to the first power supply 1, the second power supply 2 and the external power supply 3 respectively, and the first display unit includes a first resistor R1 and the first light emitting diode LED1, one end of the first resistor R1 is connected to the first input end of the first rectifier bridge, the other end of the first resistor R1 is connected to the anode of the first light emitting diode LED1, and the cathode of the first light emitting diode LED1 is connected to the first input end of the first rectifier bridge. The second input end of the first rectifier bridge is connected; the second display unit includes a second resistor R2 and a second light-emitting diode LED2, one end of the second resistor R2 is connected with the first input end of the second rectifier bridge, and the second resistor R2 is connected to the first input end of the second rectifier bridge. The other end is connected with the anode of the second light-emitting diode LED2, and the cathode of the second light-emitting diode LED2 is connected with the second input end of the second rectifier bridge; the third display unit includes a third resistor R3 and a third light-emitting diode LED3, and the third resistor One end of R3 is connected to the first input end of the third rectifier bridge, the other end of the third resistor R3 is connected to the anode of the third light-emitting diode LED3, and the cathode of the third light-emitting diode LED3 is connected to the second input end of the third rectifier bridge .

When the first power supply 1 works normally, it drives the first light-emitting diode LED1 to emit light. Similarly, when the second power supply 2 and the external power supply 3 work normally, the corresponding second light-emitting diode LED2 and the third light-emitting diode LED3 emit light.

The controller power supply circuit also includes an output display unit 7, including a fourth resistor R4, a fifth resistor R5, and a fourth light-emitting diode LED4. One end of the fourth resistor R4 is connected to the positive pole of the filter capacitor C, and the other end of the fourth resistor R4 is connected to the positive pole of the filter capacitor C. One end of the fifth resistor R5 is connected, the other end of the fifth resistor R5 is connected to the anode of the fourth light emitting diode LED4, and the cathode of the fourth light emitting diode LED4 is connected to the power ground.

When the output of the first rectifier bridge, the second rectifier bridge or the third rectifier bridge is normal, the fourth light emitting diode LED4 is driven to emit light.

The switching power supply 5 adopts SPD121201, the first input terminal of the switching power supply 5 is connected with one end of the fourth resistor R4, the second input terminal of the switching power supply 5 is connected with the power ground, and the output terminal of the switching power supply 5 is connected with the controller.

The alternating currents of the first power supply 1, the second power supply 2 and the external power supply 3 respectively pass through the first rectifying bridge, the second rectifying bridge and the third rectifying bridge and then are converted into direct current, filtered by the filter unit 4, and stepped down by the switching power supply 5, To supply power to the controller 6, if the first power supply 1, the second power supply 2 and the external power supply 3 are all normal, they can all supply power to the controller 6. When one or two power supplies fail, as long as one power supply is normal, the It can supply power to the controller 6, so as to prevent the controller 6 from being out of control due to power failure.

The utility model also provides an uninterruptible power supply. The uninterruptible power supply includes a controller and the above-mentioned controller power supply circuit, and the controller is connected with the output terminal of the switching power supply.

The utility model provides an uninterruptible power supply controller power supply circuit and an uninterruptible power supply. The first power supply, the second power supply and the external power supply are respectively used to supply power to the controller after rectification. When one or two power supplies fail , as long as one power supply is normal, it can supply power to the controller, avoiding the loss of control due to power failure of the controller when the external power supply fails, ensuring the operation of the system and improving the reliability of the system operation.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the utility model. within the scope of the new protection.

Claims (12)

1. the controller power supply circuits of a uninterrupted power supply; Said controller power supply circuits comprise the external power source that is used to controller power supply, are used for the Switching Power Supply of step-down and three rectification unit corresponding with external power source; The input of said the 3rd rectification unit links to each other with external power source; The output of said the 3rd rectification unit links to each other with the input of Switching Power Supply; The output of said Switching Power Supply links to each other with controller, it is characterized in that, said controller power supply circuits also comprise power supply and the rectification unit corresponding with power supply that is used to electric; The input of said rectification unit links to each other with power supply, and the input of said Switching Power Supply also links to each other with the output of rectification unit.

2. the controller power supply circuits of uninterrupted power supply according to claim 1; It is characterized in that; Said power supply comprises first power supply and first rectification unit corresponding with first power supply; The input of said first rectification unit links to each other with first power supply, and the output of said first rectification unit links to each other with the input of Switching Power Supply.

3. the controller power supply circuits of uninterrupted power supply according to claim 1; It is characterized in that; Said power supply comprises second source and second rectification unit corresponding with second source; The input of said second rectification unit links to each other with second source, and the output of said second rectification unit links to each other with the input of Switching Power Supply.

4. the controller power supply circuits of uninterrupted power supply according to claim 1; It is characterized in that; Said power supply comprises first power supply and second source and first rectification unit corresponding with first power supply and second rectification unit corresponding with second source; The input of said first rectification unit links to each other with first power supply; The output of said first rectification unit links to each other with the input of Switching Power Supply, and the input of said second rectification unit links to each other with second source, and the output of said second rectification unit links to each other with the input of Switching Power Supply.

5. according to the controller power supply circuits of claim 2 or 4 described uninterrupted power supplys, it is characterized in that said first power supply is an AC network.

6. according to the controller power supply circuits of claim 3 or 4 described uninterrupted power supplys, it is characterized in that said second source is an energy storage device.

7. the controller power supply circuits of uninterrupted power supply according to claim 4; It is characterized in that; Said first rectification unit comprises first rectifier bridge; Second rectification unit comprises second rectifier bridge; The 3rd rectification unit comprises the 3rd rectifier bridge, and said first rectifier bridge, second rectifier bridge and the 3rd rectifier bridge include first input end, second input, first output and second output, and the first input end of said first rectifier bridge links to each other with first power supply with second input; The first input end of said second rectifier bridge links to each other with second source with second input; The first input end of said the 3rd rectifier bridge links to each other with external power source with second input, and first output of said first rectifier bridge, second rectifier bridge and the 3rd rectifier bridge all links to each other with the input of Switching Power Supply, and second output of said first rectifier bridge, second rectifier bridge and the 3rd rectifier bridge all links to each other with power supply ground.

8. the controller power supply circuits of uninterrupted power supply according to claim 7; It is characterized in that; The controller power supply circuits of said uninterrupted power supply also comprise filter unit; Said filter unit comprises filter capacitor, and first output of said first rectifier bridge, second rectifier bridge and the 3rd rectifier bridge all links to each other with the positive pole of filter capacitor, and the negative pole of said filter capacitor links to each other with power supply ground.

9. the controller power supply circuits of uninterrupted power supply according to claim 7; It is characterized in that; Said controller power supply circuits also comprise first corresponding with first power supply, second source and the external power source respectively display unit, second display unit and the 3rd display unit; Said first display unit comprises first resistance and first light-emitting diode; One end of said first resistance links to each other with the first input end of first rectifier bridge, and the other end of said first resistance links to each other with the anode of first light-emitting diode, and the negative electrode of said first light-emitting diode links to each other with second input of first rectifier bridge; Said second display unit comprises second resistance and second light-emitting diode; One end of said second resistance links to each other with the first input end of second rectifier bridge; The other end of said second resistance links to each other with the anode of second light-emitting diode, and the negative electrode of said second light-emitting diode links to each other with second input of second rectifier bridge; Said the 3rd display unit comprises the 3rd resistance and the 3rd light-emitting diode; One end of said the 3rd resistance links to each other with the first input end of the 3rd rectifier bridge; The other end of said the 3rd resistance links to each other with the anode of the 3rd light-emitting diode, and the negative electrode of said the 3rd light-emitting diode links to each other with second input of the 3rd rectifier bridge.

10. the controller power supply circuits of uninterrupted power supply according to claim 8; It is characterized in that; The controller power supply circuits also comprise the output display unit; Said output display unit comprises the 4th resistance, the 5th resistance and the 4th light-emitting diode, and an end of said the 4th resistance links to each other with the positive pole of filter capacitor, and the other end of said the 4th resistance links to each other with an end of the 5th resistance; The other end of said the 5th resistance links to each other with the anode of the 4th light-emitting diode, and the negative electrode of said the 4th light-emitting diode links to each other with power supply ground.

11. the controller power supply circuits of uninterrupted power supply according to claim 10; It is characterized in that; Said Switching Power Supply adopts SPD121201; The first input end of said Switching Power Supply links to each other with an end of the 4th resistance, and second input of said Switching Power Supply links to each other with power supply ground, and the output of said Switching Power Supply links to each other with controller.

12. a uninterrupted power supply is characterized in that, said uninterrupted power supply comprises any described controller power supply circuits in controller and the claim 1-11, and said controller links to each other with the output of Switching Power Supply.

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