An energy gateway power supply circuit

Abstract

The utility model discloses a kind of energy gateway power supply circuit, belong to power supply circuit technical field. Including commercial power flyback subcircuit and direct current flyback subcircuit, the input end of commercial power flyback subcircuit is connected external commercial power, the output end of commercial power flyback subcircuit is connected the input end of high voltage trigger subcircuit, the input end of direct current flyback subcircuit is connected external direct current power supply, the output end of direct current flyback subcircuit is connected the input end of high voltage trigger subcircuit, the output end of high voltage trigger subcircuit is simultaneously connected the input end of low voltage trigger subcircuit and internal equipment, the output end of low voltage trigger subcircuit is connected internal equipment, and 5V voltage output by high voltage trigger subcircuit is converted to 3.3V voltage by low voltage trigger subcircuit to power supply internal equipment. The utility model realizes two power supply, when in commercial power or direct current power supply failure, it can select another normal commercial power or direct current power supply to power supply, realize stable power supply.

Description

Technical Field

[0001] This utility model belongs to the field of power supply circuit technology, specifically relating to a power supply circuit for an energy gateway. Background Technology

[0002] Existing power gateway circuits typically use AC220V or DC24V for power supply. However, regardless of whether AC220V or DC24V is used, if the power supply fails and needs to be replaced, and the replacement external power supply conditions do not match the input, conversion equipment or other additional measures are required. Poor compatibility can lead to the device failing to work properly. Utility Model Content

[0003] Purpose of this utility model: To provide a power supply circuit for an energy gateway, which solves the aforementioned problems existing in the prior art.

[0004] Technical Solution: A power supply circuit for an energy gateway includes a mains flyback circuit and a DC flyback circuit. The input terminal of the mains flyback circuit is connected to an external mains power source, and the output terminal of the mains flyback circuit is connected to the input terminal of a high-voltage trigger circuit. The input terminal of the DC flyback circuit is connected to an external DC power source, and the output terminal of the DC flyback circuit is connected to the input terminal of the high-voltage trigger circuit. The high-voltage trigger circuit is powered by either the mains flyback circuit or the DC flyback circuit. The output terminal of the high-voltage trigger circuit is simultaneously connected to the input terminal of a low-voltage trigger circuit and an internal device. The high-voltage trigger circuit converts the output voltage of either the mains flyback circuit or the DC flyback circuit into a 5V voltage to power the internal device. The output terminal of the low-voltage trigger circuit is connected to the internal device, and the low-voltage trigger circuit converts the 5V voltage output by the high-voltage trigger circuit into a 3.3V voltage to power the internal device.

[0005] Preferably, the AC flyback circuit includes a connector X1, a fuse F1, a chip U3, capacitors C1, C2, C4, C5, C6, C9, C10, C11, C12, diodes D1, D2, D3, FD3, FD4, FD6, FD7, an optocoupler U4, a resistor R1, and a transformer T1. AC power is supplied to the AC flyback circuit through the connector X1. One end of the fuse F1 is connected to pin 2 of the connector X1. The other end of the fuse F1 is simultaneously connected to one end of capacitor C4 and pin 1 of the chip U3. The other end of capacitor C4 is simultaneously connected to pin 1 of the connector X1 and pin 3 of the chip U3. One end of capacitor C5 is simultaneously connected to pin 2 of the chip U3, one end of capacitor C6, and the positive terminal of diode D1. The other end of capacitor C5 is simultaneously connected to pin 4 of the chip U3, the other end of capacitor C6, and... One end of C9, the S pin of optocoupler U4, and one end of capacitor C12 are grounded. The cathode of diode D1 is simultaneously connected to the other end of capacitor C9, the anode of diode D2, and pin 1 of transformer T1. The cathode of diode D2 is connected to the cathode of diode D3. The anode of diode D3 is simultaneously connected to the D pin of optocoupler U4 and pin 3 of transformer T1. Pin 2 of transformer T1 is connected to the anode of diode FD3. The cathode of diode FD3 is simultaneously connected to one end of capacitor C2, one end of capacitor C1, and the anode of diode FD6. The other end of capacitor C2 is connected to the other end of capacitor C1 and grounded. Pin 4 of transformer T1 is simultaneously connected to one end of capacitor C11 and one end of capacitor C10 and grounded. Pin 5 of transformer T1 is connected to the anode of diode FD4. The cathode of diode FD4 is simultaneously connected to the other end of capacitor C11, the other end of capacitor C10, and the input terminal of the high-voltage trigger sub-circuit.

[0006] Preferably, the optical coupler U4 is a TOP224 type optical coupler.

[0007] Preferably, the DC flyback circuit includes connector X2, resistors R21 and R23, capacitors C24, C27, and C28. The DC power supply is connected to the DC flyback circuit through connector X2. Pin 1 of connector X2 is grounded. Pin 2 of connector X2 is connected to one end of resistor R21, one end of capacitor C27, and one end of capacitor C28. The other end of resistor R21 is connected to one end of resistor R23 and one end of capacitor C24. The other end of capacitor C24 is the input terminal of the high-voltage trigger circuit, connected to the other end of resistor R23, and the other ends of capacitors C27 and C28 are grounded.

[0008] Preferably, the high-voltage trigger sub-circuit includes a chip U1, capacitors C21, C22, C23, C25, C26, and C29, resistors R22, R24, and R25, diodes D7, D8, and D9, and an inductor L2. Pins 6 and 8 of the chip U1 are simultaneously connected to the output terminals of both the AC flyback circuit and the DC flyback circuit. One end of capacitor C21 is connected to pin 7 of the chip U1, and the other end of capacitor C21 is simultaneously connected to pin 1 of the chip U1, the negative terminal of diode D8, and pin 2 of the inductor L2. The positive terminal of diode D8 is simultaneously connected to pin 2 of the chip U1, one end of resistor R25, and one end of resistor R24. The other end of capacitor R25 is connected to one end of capacitor C23. The other end of capacitor C23 is connected to pin 3 of chip U1. The other end of resistor R24 ​​is simultaneously connected to pin 4 of chip U1, one end of resistor R22, and one end of capacitor C22. Pin 1 of inductor L2 is simultaneously connected to the other end of resistor R22, the other end of capacitor C22, one end of capacitor C26, one end of capacitor C29, one end of capacitor C25, the cathode of diode D7, the power supply terminal of the internal device, and the input terminal of the low-voltage trigger sub-circuit. The other end of capacitor C26 is simultaneously connected to the other end of capacitor C29, the other end of capacitor C25, and the cathode of diode D9. The anode of diode D9 is connected to the anode of diode D7.

[0009] Preferably, the chip U1 is a BD9G401EFJ model chip.

[0010] Preferably, the low-voltage trigger sub-circuit includes chip U2, capacitor C30, capacitor C31, capacitor C32, and capacitor C33. Pin 3 of chip U2 is simultaneously connected to one end of capacitor C31, one end of capacitor C30, and the output terminal of the high-voltage trigger sub-circuit. The other end of capacitor C30 is simultaneously connected to the other end of capacitor C31, pin 1 of chip U2, one end of capacitor C32, and one end of capacitor C33, and grounded. Pin 4 of chip U2 is simultaneously connected to pin 2 of chip U2, the other end of capacitor C32, the other end of capacitor C33, and the power supply terminal of the internal device.

[0011] Preferably, the chip U2 is an LM1117IMPX-3.3 chip.

[0012] Beneficial Effects: This utility model relates to a power supply circuit for an energy gateway. It connects to mains power via connector X1, and the 220V mains power is converted to 24V DC voltage via a flyback circuit to power a high-voltage trigger circuit. The high-voltage and low-voltage trigger circuits work together to power compatible internal devices. When connector X1 loses power, the DC power supply powers the DC flyback circuit via connector X2. The output of the DC flyback circuit is connected to the input of the high-voltage trigger circuit, thus powering the high-voltage trigger circuit. The high-voltage and low-voltage trigger circuits work together to power compatible internal devices, achieving dual power supply. Regardless of whether the mains or DC power supply fails, the other working mains or DC power supply can be selected for stable power supply. Attached Figure Description

[0013] Figure 1 This is the overall circuit diagram of this utility model. Detailed Implementation

[0014] like Figure 1 As shown, this utility model provides a technical solution: a power supply circuit for an energy gateway, including a mains flyback circuit and a DC flyback circuit. The input terminal of the mains flyback circuit is connected to an external mains power supply, and the output terminal of the mains flyback circuit is connected to the input terminal of a high-voltage trigger circuit. The input terminal of the DC flyback circuit is connected to an external DC power supply, and the output terminal of the DC flyback circuit is connected to the input terminal of the high-voltage trigger circuit. The high-voltage trigger circuit is powered by either the mains flyback circuit or the DC flyback circuit. The output terminal of the high-voltage trigger circuit... Simultaneously, the input terminal of the low-voltage trigger sub-circuit is connected to the internal device. The high-voltage trigger sub-circuit converts the output voltage of the AC flyback sub-circuit or the DC flyback sub-circuit into a 5V voltage to power the internal device. The output terminal of the low-voltage trigger sub-circuit is connected to the internal device, and the low-voltage trigger sub-circuit converts the 5V voltage output by the high-voltage trigger sub-circuit into a 3.3V voltage to power the internal device. This achieves dual power supply, allowing the selection of the other normal AC or DC power supply to provide stable power in the event of a failure in either the AC or DC power supply.

[0015] In a further embodiment, the mains power flyback circuit includes connector X1, fuse F1, chip U3, capacitors C1, C2, C4, C5, C6, C9, C10, C11, C12, diodes D1, D2, D3, FD3, FD4, FD6, and FD7, optocoupler U4, resistor R1, and transformer T1. The optocoupler U4 is a TOP224 model optocoupler, and the mains power is connected to the mains power supply through connector X1. In the electro-reactive circuit, one end of fuse F1 is connected to pin 2 of connector X1, and the other end of fuse F1 is simultaneously connected to one end of capacitor C4 and pin 1 of chip U3, providing overcurrent protection. The other end of capacitor C4 is simultaneously connected to pin 1 of connector X1 and pin 3 of chip U3. One end of capacitor C5 is simultaneously connected to pin 2 of chip U3, one end of capacitor C6, and the positive terminal of diode D1. The other end of capacitor C5 is simultaneously connected to pin 4 of chip U3, the other end of capacitor C6, one end of capacitor C9, and the optocoupler. The S pin of optocoupler U4 and one end of capacitor C12 are grounded. The cathode of diode D1 is simultaneously connected to the other end of capacitor C9, the anode of diode D2, and pin 1 of transformer T1. The cathode of diode D2 is connected to the cathode of diode D3. The anode of diode D3 is simultaneously connected to pin D of optocoupler U4 and pin 3 of transformer T1. Pin 2 of transformer T1 is connected to the anode of diode FD3. The cathode of diode FD3 is simultaneously connected to one end of capacitor C2, one end of capacitor C1, and the anode of diode FD6. The capacitor C2... The other end is connected to the other end of capacitor C1 and grounded. Pin 4 of transformer T1 is connected to one end of capacitor C11 and one end of capacitor C10 and grounded. Pin 5 of transformer T1 is connected to the positive terminal of diode FD4. The negative terminal of diode FD4 is connected to the other end of capacitor C11, the other end of capacitor C10 and the input terminal of the high-voltage trigger sub-circuit. The secondary output voltage of transformer T1 is fed back to chip U3 through optocoupler U4. Chip U3 uses the feedback signal to adjust the output voltage and finally outputs 24V voltage for the load.

[0016] In a further embodiment, the DC flyback sub-circuit includes connector X2, resistors R21 and R23, capacitors C24, C27, and C28. A DC power supply is connected to the DC flyback sub-circuit through connector X2. Pin 1 of connector X2 is grounded, and pin 2 of connector X2 is connected to one end of resistor R21, one end of capacitor C27, and one end of capacitor C28. The other end of resistor R21 is simultaneously connected to one end of resistor R23 and one end of capacitor C24. The other end of capacitor C24 is also the input terminal of the high-voltage trigger sub-circuit and is connected to the other end of resistor R23. The other ends of capacitors C27 and C28 are grounded. Resistor R21 and capacitor R22 are used to perform voltage division detection on the input DC power supply, and capacitors C27 and C28 are used to filter the input DC voltage, thus providing regulated power to the high-voltage trigger sub-circuit.

[0017] In a further embodiment, the high-voltage trigger sub-circuit includes a chip U1, capacitors C21, C22, C23, C25, C26, and C29, resistors R22, R24, and R25, diodes D7, D8, and D9, and an inductor L2. The chip U1 is a BD9G401EFJ model chip. Pins 6 and 8 of the chip U1 are simultaneously connected to the output terminals of the AC flyback circuit and the DC flyback circuit. One end of capacitor C21 is connected to pin 7 of the chip U1, and the other end of capacitor C21 is simultaneously connected to pin 1 of the chip U1, the negative terminal of diode D8, and pin 2 of the inductor L2. The positive terminal of diode D8 is simultaneously connected to pin 2 of the chip U1, one end of resistor R25, and one end of resistor R24. The other end of capacitor R25 is connected to one end of capacitor C23. The other end of capacitor C23 is connected to pin 3 of chip U1. The other end of resistor R24 ​​is simultaneously connected to pin 4 of chip U1, one end of resistor R22, and one end of capacitor C22. Pin 1 of inductor L2 is simultaneously connected to the other end of resistor R22, the other end of capacitor C22, one end of capacitor C26, one end of capacitor C29, one end of capacitor C25, the negative terminal of diode D7, the power supply terminal of the internal device, and the input terminal of the low-voltage trigger sub-circuit. The other end of capacitor C26 is simultaneously connected to the other end of capacitor C29, the other end of capacitor C25, and the negative terminal of diode D9. The positive terminal of diode D9 is connected to the positive terminal of diode D7, converting the input 24V voltage into 5V voltage to power the internal device.

[0018] In a further embodiment, the low-voltage trigger sub-circuit includes chip U2, capacitors C30, C31, C32, and C33. Chip U2 is an LM1117IMPX-3.3 chip. Pin 3 of chip U2 is connected to one end of capacitor C31, one end of capacitor C30, and the output terminal of the high-voltage trigger sub-circuit. The other end of capacitor C30 is connected to the other end of capacitor C31, pin 1 of chip U2, one end of capacitor C32, and one end of capacitor C33, and grounded. Pin 4 of chip U2 is connected to pin 2 of chip U2, the other end of capacitor C32, the other end of capacitor C33, and the power supply terminal of the internal device, converting the input 5V voltage into a 3.3V voltage to power the internal device.

[0019] Through the above technical solution, the present invention can achieve the following working process: Connector X1 connects to AC mains power, and the AC flyback circuit converts the 220V AC mains power into 24V DC power to supply the high-voltage trigger circuit. When connector X1 loses power, the DC power supply supplies power to the DC flyback circuit through connector X2. The output of the DC flyback circuit is connected to the input of the high-voltage trigger circuit, achieving dual power supply. In the event of a failure in either the AC mains or DC power supply, the other normal AC mains or DC power supply can be selected to provide stable power to the high-voltage trigger circuit. The high-voltage trigger circuit converts the input 24V DC voltage into 5V to power internal devices, and the 5V voltage connected to the high-voltage trigger circuit through the low-voltage trigger circuit is converted into 3.3V to power internal devices.

[0020] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A power supply circuit for an energy gateway, characterized in that, The device includes an AC flyback circuit and a DC flyback circuit. The input of the AC flyback circuit is connected to an external AC power source, and its output is connected to the input of a high-voltage trigger circuit. The input of the DC flyback circuit is connected to an external DC power source, and its output is connected to the input of the high-voltage trigger circuit. The high-voltage trigger circuit is powered either by the AC flyback circuit or the DC flyback circuit. The output of the high-voltage trigger circuit is simultaneously connected to the input of a low-voltage trigger circuit and an internal device. The high-voltage trigger circuit converts the output voltage of either the AC flyback circuit or the DC flyback circuit into a 5V voltage to power the internal device. The output of the low-voltage trigger circuit is connected to the internal device, and it converts the 5V output from the high-voltage trigger circuit into a 3.3V voltage to power the internal device.

2. The power supply circuit for an energy gateway according to claim 1, characterized in that, The AC-powered flyback circuit includes connector X1, fuse F1, chip U3, capacitors C1, C2, C4, C5, C6, C9, C10, C11, C12, diodes D1, D2, D3, FD3, FD4, FD6, FD7, optocoupler U4, resistor R1, and transformer T1. AC power is supplied to the flyback circuit through connector X1. One end of fuse F1 is connected to pin 2 of connector X1. The other end of fuse F1 is simultaneously connected to one end of capacitor C4 and pin 1 of chip U3. The other end of capacitor C4 is simultaneously connected to pin 1 of connector X1 and pin 3 of chip U3. One end of capacitor C5 is simultaneously connected to pin 2 of chip U3, one end of capacitor C6, and the positive terminal of diode D1. The other end of capacitor C5 is simultaneously connected to pin 4 of chip U3, the other end of capacitor C6, and capacitor C9. One end of the high-voltage trigger circuit is connected to the S pin of optocoupler U4 and one end of capacitor C12 and grounded. The cathode of diode D1 is connected to the other end of capacitor C9, the anode of diode D2 and pin 1 of transformer T1. The cathode of diode D2 is connected to the cathode of diode D3. The anode of diode D3 is connected to the D pin of optocoupler U4 and pin 3 of transformer T1. Pin 2 of transformer T1 is connected to the anode of diode FD3. The cathode of diode FD3 is connected to one end of capacitor C2, one end of capacitor C1 and the anode of diode FD6. The other end of capacitor C2 is connected to the other end of capacitor C1 and grounded. Pin 4 of transformer T1 is connected to one end of capacitor C11 and one end of capacitor C10 and grounded. Pin 5 of transformer T1 is connected to the anode of diode FD4. The cathode of diode FD4 is connected to the other end of capacitor C11, the other end of capacitor C10 and the input terminal of the high-voltage trigger circuit.

3. The power supply circuit for an energy gateway according to claim 2, characterized in that, The optical coupler U4 is a TOP224 model optical coupler.

4. The power supply circuit for an energy gateway according to claim 1, characterized in that, The DC flyback circuit includes connector X2, resistors R21 and R23, capacitors C24, C27, and C28. A DC power supply is connected to the DC flyback circuit through connector X2. Pin 1 of connector X2 is grounded. Pin 2 of connector X2 is connected to one end of resistor R21, one end of capacitor C27, and one end of capacitor C28. The other end of resistor R21 is simultaneously connected to one end of resistor R23 and one end of capacitor C24. The other end of capacitor C24 is also the input terminal of the high-voltage trigger circuit, connected to the other end of resistor R23, and the other ends of capacitors C27 and C28 are grounded.

5. The power supply circuit for an energy gateway according to claim 1, characterized in that, The high-voltage trigger sub-circuit includes chip U1, capacitors C21, C22, C23, C25, C26, and C29, resistors R22, R24, and R25, diodes D7, D8, and D9, and inductor L2. Pins 6 and 8 of chip U1 are simultaneously connected to the output terminals of both the AC flyback circuit and the DC flyback circuit. One end of capacitor C21 is connected to pin 7 of chip U1, and the other end of capacitor C21 is simultaneously connected to pin 1 of chip U1, the negative terminal of diode D8, and pin 2 of inductor L2. The positive terminal of diode D8 is simultaneously connected to pin 2 of chip U1, one end of resistor R25, and one end of resistor R24. The other end of capacitor R25 is connected to one end of capacitor C23. The other end of capacitor C23 is connected to pin 3 of chip U1. The other end of resistor R24 ​​is simultaneously connected to pin 4 of chip U1, one end of resistor R22, and one end of capacitor C22. Pin 1 of inductor L2 is simultaneously connected to the other end of resistor R22, the other end of capacitor C22, one end of capacitor C26, one end of capacitor C29, one end of capacitor C25, the negative terminal of diode D7, the power supply terminal of the internal device, and the input terminal of the low-voltage trigger sub-circuit. The other end of capacitor C26 is simultaneously connected to the other end of capacitor C29, the other end of capacitor C25, and the negative terminal of diode D9. The positive terminal of diode D9 is connected to the positive terminal of diode D7.

6. The power supply circuit for an energy gateway according to claim 5, characterized in that, The chip U1 is a BD9G401EFJ model chip.

7. The power supply circuit for an energy gateway according to claim 1, characterized in that, The low-voltage trigger sub-circuit includes chip U2, capacitor C30, capacitor C31, capacitor C32, and capacitor C33. Pin 3 of chip U2 is connected to one end of capacitor C31, one end of capacitor C30, and the output terminal of the high-voltage trigger sub-circuit. The other end of capacitor C30 is connected to the other end of capacitor C31, pin 1 of chip U2, one end of capacitor C32, one end of capacitor C33, and grounded. Pin 4 of chip U2 is connected to pin 2 of chip U2, the other end of capacitor C32, the other end of capacitor C33, and the power supply terminal of the internal device.

8. The power supply circuit for an energy gateway according to claim 7, characterized in that, The chip U2 is an LM1117IMPX-3.3 chip.

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