CN218783578U - Power supply circuit supporting power supply of multiple power supplies - Google Patents
Power supply circuit supporting power supply of multiple power supplies Download PDFInfo
- Publication number
- CN218783578U CN218783578U CN202222774468.9U CN202222774468U CN218783578U CN 218783578 U CN218783578 U CN 218783578U CN 202222774468 U CN202222774468 U CN 202222774468U CN 218783578 U CN218783578 U CN 218783578U
- Authority
- CN
- China
- Prior art keywords
- power supply
- power
- input
- module
- isolation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model provides a support power supply circuit of multichannel power supply, keep apart conversion module including alternating current power supply input module, first direct current power supply input module, isolation module and high pressure. The alternating current power supply input module is used for receiving alternating current input by an external alternating current power supply and outputting first direct current to the first input end of the isolation module. The first direct-current power supply input module is used for receiving direct current input by an external direct-current power supply and outputting the direct current to the second input end of the isolation module. The isolation module outputs the received direct current to the high-voltage isolation conversion module when the first input end or the second input end receives the direct current; when the first input end and the second input end both receive the direct current, the high voltage of the received direct current is output to the high voltage isolation conversion module. The high-voltage isolation conversion module converts the received direct current into low-voltage direct current for the mainboard. The utility model discloses can support alternating current power supply and DC power supply to supply power simultaneously.
Description
Technical Field
The utility model relates to an electric power tech field especially relates to a power supply circuit for being mainboard power supply's support multichannel power supply.
Background
Because the network security equipment of the power system has different use environments, the input requirements of power supplies are various, some are AC220V input, some are DC110V input, and some are DC220V input, and the input power supplies need to be converted into low-voltage direct current through different conversion modules or power modules so as to supply power for the mainboard of the network security equipment. However, at the same time, the power input types acceptable by the existing network security devices are often single, either AC220V or DC110V or DC220V, that is, corresponding power supply circuit designs are performed for a single power input type, so that the same network security device cannot be applied to various different use environments, and cannot simultaneously meet the input requirements of multiple power supplies.
In addition, the mains supply has unstable phenomenon, has a large voltage floating range, and has poor anti-interference performance. The utility model has the advantages of adopt the commercial power directly to supply power for network security equipment, can bring the influence for network security equipment's stability in use and life, also need to improve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a support supply circuit of multichannel power supply can support alternating current power supply and DC power supply and supply power simultaneously to mainboard for the network security equipment provides required low pressure direct current.
In order to achieve the above object, the present invention provides a power supply circuit supporting power supply by multiple power sources, including an ac power input module, a first dc power input module, an isolation module and a high voltage isolation conversion module, wherein the ac power input module is configured to receive an ac power input by an external ac power source and rectify the ac power to form a first dc power to output the first dc power, and an output end of the ac power input module is connected to a first input end of the isolation module; the first direct-current power supply input module is used for receiving direct current input by an external direct-current power supply and outputting the direct current as second direct current, and the output end of the first direct-current power supply input module is connected to the second input end of the isolation module; the output end of the isolation module is connected to the high-voltage isolation and conversion module, the isolation module outputs the received direct current to the high-voltage isolation and conversion module when one of the first input end and the second input end receives the direct current, and the isolation module outputs the higher voltage of the received direct current to the high-voltage isolation and conversion module when both the first input end and the second input end receive the direct current; the high-voltage isolation conversion module is used for converting the received direct current into low-voltage direct current for the mainboard and outputting the low-voltage direct current.
The power supply circuit further comprises a filter circuit, and the output end of the isolation module is connected to the high-voltage isolation conversion module through the filter circuit.
The filter circuit is a pi-type filter circuit.
The isolation module comprises a first diode and a second diode, wherein the anode of the first diode is the first input end, the anode of the second diode is the second input end, and the cathode of the first diode is connected with the cathode of the second diode and is used as the output end of the isolation module.
The alternating current power supply input module comprises an alternating current power supply input interface, an alternating current overvoltage protection circuit, an alternating current overcurrent protection circuit and a rectification module, wherein the alternating current power supply input interface is used for being connected with an external alternating current power supply, the alternating current overvoltage protection circuit is arranged on the alternating current power supply input interface, the alternating current power supply input interface is connected to the input end of the rectification module through the alternating current overcurrent protection circuit, and the output end of the rectification module is connected to the first input end of the isolation module.
The alternating-current overvoltage protection circuit comprises a first voltage dependent resistor, a second voltage dependent resistor and a gas discharge tube, wherein the first voltage dependent resistor is arranged between a phase line and a neutral line of the alternating-current power supply input interface, and the second voltage dependent resistor and the gas discharge tube are connected in series between the neutral line and a ground line of the alternating-current power supply input interface; the alternating current overcurrent protection circuit comprises a first fuse, and the first fuse is arranged between a phase line of the alternating current power supply input interface and the input end of the rectification module.
The first direct-current power supply input module comprises a first direct-current power supply input interface, a direct-current overvoltage protection circuit and a direct-current overcurrent protection circuit, the first direct-current power supply input interface is used for being connected with an external direct-current power supply, the direct-current overvoltage protection circuit is arranged on the first direct-current power supply input interface, and the first direct-current power supply input interface is connected to the second input end of the isolation module through the direct-current overcurrent protection circuit.
The power supply circuit further comprises a second direct current power supply input module, wherein the first direct current power supply input module is used for receiving direct current input by one of a 220V external direct current power supply and a 110V external direct current power supply; the second direct-current power supply input module is used for receiving direct current input by the other one of a 220V external direct-current power supply and a 110V external direct-current power supply, outputting the received direct current as third direct current, and the output end of the second direct-current power supply input module is connected to the third input end of the isolation module; the isolation module outputs the received direct current to the high-voltage isolation and conversion module when one of the first input end, the second input end and the third input end receives the direct current, and the isolation module outputs the highest voltage of the received direct current to the high-voltage isolation and conversion module when at least two of the first input end, the second input end and the third input end receive the direct current.
The isolation module comprises a first diode, a second diode and a third diode, wherein the anode of the first diode is the first input end, the anode of the second diode is the second input end, the anode of the third diode is the third input end, and the cathode of the first diode, the cathode of the second diode and the cathode of the third diode are connected and used as the output end of the isolation module.
The first direct-current power input module comprises a first direct-current power input interface, a third piezoresistor and a second fuse, the first direct-current power input interface is used for connecting one of a 220V external direct-current power supply and a 110V external direct-current power supply, the third piezoresistor is arranged between a power line and a ground wire of the first direct-current power input interface, and the second fuse is arranged between the power line of the first direct-current power input interface and an anode of the second diode; the second direct-current power supply input module comprises a second direct-current power supply input interface, a fourth voltage dependent resistor and a third fuse, the second direct-current power supply input interface is used for connecting the other one of a 220V external direct-current power supply and a 110V external direct-current power supply, the fourth voltage dependent resistor is arranged between a power line of the second direct-current power supply input interface and a ground wire, and the third fuse is arranged between the power line of the second direct-current power supply input interface and an anode of the third diode.
The utility model has the advantages that: the utility model discloses a support multichannel power supply's supply circuit, through the setting of alternating current power supply input module, first direct current power supply input module and isolation module, can both support the alternating current power supply and can support the direct current power supply, and can support alternating current power supply and direct current power supply to supply power simultaneously; the utility model discloses further through the setting of second DC power supply input module, not only can support AC power supply and DC power supply simultaneously, can also support the DC power supply of different output voltage simultaneously, consequently, the utility model discloses can satisfy the input demand of multiple power simultaneously, when being applied to network security equipment, can make same network security equipment can be applicable to different service environments; meanwhile, when the power supply in the power supply state is powered off because the multi-path power supply simultaneously provides power supply input, the utility model can rapidly switch the power supply from the other path power supply through the isolation module so as to keep the power supply continuous and avoid the power failure of the main board, thus the utility model has the hot standby function while realizing the AC/DC compatibility; furthermore, the utility model discloses a set up filter circuit between isolation module and high pressure isolation conversion module, can satisfy EMC's demand, the stability of power supply is ensured to the reinforcing circuit interference killing feature.
Drawings
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the present invention and accompanying drawings, which are provided for the purpose of illustration and description and are not intended to limit the present invention.
In the attached figures, the drawing is shown,
fig. 1 is a block diagram of a power supply circuit supporting multiple power supplies according to a first embodiment of the present invention.
Fig. 2 is a block diagram of a power supply circuit supporting multiple power supplies according to a second embodiment of the present invention.
Fig. 3 is a block diagram of a power supply circuit supporting multiple power supplies according to a third embodiment of the present invention.
Fig. 4 is a circuit diagram of a power supply circuit supporting multiple power supplies according to a third embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
The utility model discloses a support power supply circuit of multichannel power supply both supports alternating current power supply and supports the direct current power supply, and can support alternating current power supply and direct current power supply to supply power simultaneously, can be used to provide required low pressure direct current for network security equipment's mainboard.
As shown in fig. 1, the power supply circuit supporting power supply by multiple power sources according to the first embodiment of the present invention includes an ac power input module 10, a first dc power input module 20, an isolation module 30, and a high voltage isolation conversion module 40. The ac power input module 10 and the first dc power input module 20 are connected to the high voltage isolation and conversion module 40 through the isolation module 30.
The ac power input module 10 is configured to receive ac power input by an external ac power source 91 and rectify the ac power to form a first dc power, so as to output the first dc power. The output of the ac power input module 10 is connected to a first input 31 of the isolation module 30.
In one embodiment, the ac power input module 10 may include an ac power input interface 11, an ac overvoltage protection circuit 12, an ac overcurrent protection circuit 13, and a rectification module 14. The ac power input interface 11 is used for connecting an external ac power 91; the alternating-current overvoltage protection circuit 12 is arranged at the alternating-current power supply input interface 11 and is used for providing overvoltage protection; the ac overcurrent protection circuit 13 is used to provide overcurrent protection. The ac power input interface 11 is connected to the input end of the rectifying module 14 through the ac overcurrent protection circuit 13, and the output end of the rectifying module 14 is connected to the first input end 31 of the isolation module 30.
The first dc power input module 20 is configured to receive a dc power input by the external dc power supply 92 and output the dc power as a second dc power. The output of the first dc power input module 20 is connected to the second input 32 of the isolation module 30.
In an embodiment, the first dc power input module 20 includes a first dc power input interface 21, a dc overvoltage protection circuit 22, and a dc overcurrent protection circuit 23. The first dc power input interface 21 is used for connecting an external dc power supply 92; the dc overvoltage protection circuit 22 is disposed at the first dc power input interface 21, and is configured to provide overvoltage protection; the dc overcurrent protection circuit 23 is used to provide overcurrent protection. The first dc power input interface 21 is connected to the second input end 32 of the isolation module 30 through the dc overcurrent protection circuit 23.
The output 34 of the isolation module 30 is connected to a high voltage isolated converter module 40. When the isolation module 30 receives the dc power at one of the first input terminal 31 and the second input terminal 32, the isolation module 30 outputs the received dc power to the high voltage isolation and conversion module 40, that is, the isolation module 30 outputs the received first dc power or the received second dc power to the high voltage isolation and conversion module 40 only when the first input terminal 31 or the second input terminal 32 of the isolation module receives the first dc power or the received second dc power. When the isolation module 30 receives the dc power at both the first input end 21 and the second input end 32, the isolation module 30 outputs the higher voltage of the received dc power to the high voltage isolation and conversion module 40, that is, the isolation module 30 receives the first dc power at the first input end 31 and outputs the higher voltage dc power of the first dc power and the second dc power to the high voltage isolation and conversion module 40 when the second input end 32 receives the second dc power.
In one embodiment, the isolation module 30 may include a first diode and a second diode, wherein an anode of the first diode is the first input terminal 31, an anode of the second diode is the second input terminal 32, and a cathode of the first diode and a cathode of the second diode are connected to serve as the output terminal 34 of the isolation module 30. The diodes can be S3M type diodes which can meet the use requirement.
The high-voltage isolation conversion module 40 is configured to convert the received direct current into a low-voltage direct current for the motherboard and output the low-voltage direct current. The high voltage isolation converter module 40 is well known to those skilled in the art and will not be described herein.
Based on the above structure, the utility model discloses the power supply circuit who supports multichannel power supply of first embodiment can enough support alternating current power supply like AC220V alternating current power supply, can support direct current power supply like DC220V or DC110V direct current power supply again, when alternating current power supply supplies power alone, alternating current power supply's alternating current rectification is first direct current after, provides high voltage isolation conversion module 40 in order to convert low voltage direct current for the mainboard and export through isolation module 30; when the direct current power supply supplies power independently, the direct current of the direct current power supply can be directly provided to the high-voltage isolation conversion module 40 through the isolation module 30 so as to be converted into low-voltage direct current for the mainboard and output; when the ac power supply and the dc power supply simultaneously supply power, the isolation module 30 provides the higher voltage of the first dc power converted from the ac power supply and the dc power provided by the dc power supply to the high voltage isolation conversion module 40 to convert the first dc power into the low voltage dc power for the motherboard and output the low voltage dc power. Therefore, the utility model discloses can realize the alternating current-direct current compatibility, and have the hot function of being equipped with.
In order to ensure the stability of power supply, the reinforcing circuit interference killing feature to satisfy EMC's demand, the utility model discloses a support multichannel power supply's supply circuit can also set up filter circuit, in order to get rid of the unnecessary harmonic, makes the electric current more level and smooth. As shown in fig. 2 the utility model discloses a support multichannel power supply's of second embodiment supply circuit is provided with filter circuit 50 between isolation module 30 and high voltage isolation conversion module 40, and the output 34 of isolation module 30 is connected to high voltage isolation conversion module 40 through filter circuit 50, and filter circuit 50 is used for filtering the direct current of isolating module 30 output 34, later carries it to high voltage isolation conversion module 40 again.
In an embodiment, the filter circuit 50 may be implemented by a pi filter circuit, but is not limited thereto.
The other structures of the power supply circuit supporting multiple power supplies in the second embodiment are the same as those of the power supply circuit supporting multiple power supplies in the first embodiment, and are not described again here.
As shown in fig. 3, the power supply circuit supporting multiple power supplies according to the third embodiment of the present invention has the same structure as most of the power supply circuit supporting multiple power supplies according to the first embodiment, and the same parts are not repeated, and the difference mainly lies in that the power supply circuit supporting multiple power supplies according to the third embodiment further includes a second dc power input module 60, and the isolation module 30' is further provided with a third input terminal 33.
Specifically, the first dc power input module 20 and the second dc power input module 60 are configured to receive dc power input by external dc power sources with different output voltages, for example, the first dc power input module 20 is configured to be connected to a 220V external dc power source, and the second dc power input module 60 is configured to be connected to a 110V external dc power source, or vice versa, that is, the first dc power input module 20 is configured to receive dc power input by one of the 220V external dc power source and the 110V external dc power source, and the second dc power input module 60 is configured to receive dc power input by the other of the 220V external dc power source and the 110V external dc power source.
In an embodiment, the second dc power input module 60 may have the same circuit structure as the first dc power input module 20, but is not limited thereto. The second dc power input module 60 may include a second dc power input interface 61, a second dc overvoltage protection circuit 62, and a second dc overcurrent protection circuit 63. The second dc power input interface 61 is used for connecting an external dc power supply 93; the second dc overvoltage protection circuit 62 is disposed at the second dc power input interface 61, and is configured to provide overvoltage protection; the second dc overcurrent protection circuit 63 is used to provide overcurrent protection. The second dc power input interface 61 is connected to the third input terminal 33 of the isolation module 30' via a second dc overcurrent protection circuit 63.
The second dc power input module 60 outputs the received dc power as a third dc power. The output of the second dc power input module 60 is connected to the third input 33 of the isolation module 30'. The first input terminal 31 of the isolation module 30' is connected to the output terminal of the ac power input module 10, the second input terminal 32 is connected to the output terminal of the first dc power input module 20, and the output terminal 34 is connected to the high voltage isolation conversion module 40.
When the isolation module 30 'receives the dc power at one of the first input terminal 31, the second input terminal 32 and the third input terminal 33, the isolation module 30' outputs the received dc power to the high voltage isolation and conversion module 40. When the isolation module 30' receives the dc power at least two of the first input terminal 31, the second input terminal 32 and the third input terminal 33, the highest voltage of the received dc power is output to the high voltage isolation and conversion module 40.
In one embodiment, the isolation module 30 'includes a first diode, a second diode and a third diode, wherein an anode of the first diode is the first input terminal 31, an anode of the second diode is the second input terminal 32, an anode of the third diode is the third input terminal 33, and a cathode of the first diode, a cathode of the second diode and a cathode of the third diode are connected to serve as the output terminal 34 of the isolation module 30'. The diodes can be S3M type diodes which can meet the use requirement.
Therefore, the utility model discloses the power supply circuit of support multichannel mains operated not only can support alternating current power supply and DC power supply to supply power simultaneously, can also support different output voltage's DC power supply, during the specific application, the utility model discloses a power supply circuit of support multichannel mains operated can support AC220V alternating current power supply, DC220V DC power supply, DC110V DC power supply simultaneously and supply power.
The utility model discloses the difference of the supply circuit of the support multichannel mains operated of third embodiment and first embodiment still lies in, and the supply circuit of the support multichannel mains operated of third embodiment is provided with filter circuit 50 between conversion module 40 in its isolation module 30' and high pressure isolation, and the output 34 of isolating module 30' is connected to high pressure isolation conversion module 40 through filter circuit 50, is filtered the direct current of isolating module 30' output 34 by filter circuit 50. Preferably, the filter circuit 50 can be implemented by a pi filter circuit. Of course, the filter circuit 50 may be provided according to the need.
Fig. 4 is a preferred specific circuit diagram of the power supply circuit supporting multiple power supplies according to the third embodiment of the present invention.
In the circuit shown in fig. 4, the isolation module 30 'includes a first diode PD1, a second diode PD2, and a third diode PD3, wherein an anode of the first diode PD1 is the first input terminal 31, an anode of the second diode PD2 is the second input terminal 32, an anode of the third diode PD3 is the third input terminal 33, and a cathode of the first diode, a cathode of the second diode, and a cathode of the third diode are connected to each other and serve as the output terminal 34 of the isolation module 30'.
The AC power input interface 11 of the AC power input module 10 has a phase line AC _ L, a neutral line AC _ N, and a ground line AC _ GND; the alternating-current overvoltage protection circuit 12 comprises a first voltage dependent resistor RV1, a second voltage dependent resistor RV2 and a gas discharge tube GD3, wherein the first voltage dependent resistor RV1 is arranged between a phase line AC _ L and a neutral line AC _ N of the alternating-current power supply input interface 11, and the second voltage dependent resistor AC _ N and the gas discharge tube GD3 are connected in series between the neutral line AC _ N and a ground line AC _ GND of the alternating-current power supply input interface 11; the alternating current overcurrent protection circuit 13 comprises a first fuse F3, the rectifier module 14 is realized by adopting a rectifier bridge PD4, and the first fuse F3 is arranged between the phase line AC _ L of the alternating current power supply input interface 11 and the input end of the rectifier bridge PD4 of the rectifier module 14; an input terminal of the rectifier bridge PD4 is connected to the anode of the first diode PD 1.
The first DC power input interface 21 of the first DC power input module 20 has a power line DCIN220V + and a ground line DC _ GND, and is used for connecting a 220V external DC power supply; the direct-current overvoltage protection circuit 22 comprises a third voltage dependent resistor RV3, and the third voltage dependent resistor RV3 is arranged between a power line DCIN220V + of the first direct-current power input interface and a ground line DC _ GND; the dc overcurrent protection circuit 23 includes a second fuse F2, and the second fuse F2 is disposed between the power line DCIN220V + of the first dc power input interface and the anode of the second diode PD 2.
The second DC power input interface 61 of the second DC power input module 60 has a power line DCIN110V + and a ground line DC _ GND for connecting a 110V external DC power; the second DC overvoltage protection circuit 62 includes a fourth varistor RV4, and the fourth varistor RV4 is disposed between the power line DCIN110V + of the second DC power input interface 61 and the ground line DC _ GND; the second dc overcurrent protection circuit 63 includes a third fuse F1, and the third fuse F1 is disposed between the power line DCIN220V + of the second dc power input interface 61 and the anode of the third diode PD 3.
The filter circuit 50 is a pi-type filter circuit including capacitors PC1 and PC2 and an inductor PL 1. The cathode of the first diode, the cathode of the second diode and the cathode of the third diode are connected to the input terminal of the filter circuit 50, and the output terminal of the filter circuit 50 is connected to the high voltage isolation conversion module 40.
In the power supply circuit supporting multi-path power supply shown in fig. 4, 220V ac power input by the ac power input interface 11 is rectified by the rectifier bridge PD4 and outputs a first dc power to the anode of the first diode PD 1; the 220V direct current input by the first direct current power input interface 21 is used as a second direct current and is output to the anode of the second diode PD 2; the 110V dc power input from the second dc power input interface 61 is output to the anode of the third diode PD3 as a third dc power. The first direct current, the second direct current and the third direct current are isolated by diodes PD1, PD2 and PD 3.
When only the ac power input interface 11 receives the 220V ac power from the 220V ac power supply, the ac power input module 10 outputs the first dc power to the anode of the first diode PD1, the first diode PD1 is turned on, the first dc power is input to the high voltage isolation conversion module 40 through the filter circuit 50, and the first dc power is converted by the high voltage isolation conversion module 40 into the 12V main board for outputting the low voltage dc power.
When only the first dc power input interface 21 receives the 220V dc power from the 220V dc power supply, the first dc power input module 20 outputs the second dc power to the anode of the second diode PD2, the second diode PD2 is turned on, the second dc power is input to the high voltage isolation and conversion module 40 through the filter circuit 50, and the second dc power is converted by the high voltage isolation and conversion module 40 into the 12V main board and is output as the low voltage dc power.
When only the second dc power input interface 61 receives the 110V dc power from the 110V dc power supply, the second dc power input module 60 outputs the third dc power to the anode of the third diode PD3, the third diode PD3 is turned on, the third dc power is input to the high voltage isolation and conversion module 40 through the filter circuit 50, and the third dc power is converted by the high voltage isolation and conversion module 40 into 12V dc power for the main board to output.
When at least two of the ac power input interface 11, the first dc power input interface 21, and the second dc power input interface 61 receive corresponding power inputs at the same time, the diodes corresponding to the power input modules (the ac power input module 10, the first dc power input module 20, or the second dc power input module 60) outputting the dc power with higher voltage are turned on, so that the dc power with higher voltage is input into the high-voltage isolation conversion module 40 through the filter circuit 50, and is converted into the low-voltage dc power for the 12V motherboard by the high-voltage isolation conversion module 40 to be output. In the power supply process, if the power supply in the power supply state is powered off, the other power input modules receiving the power input can conduct the corresponding diodes, and continue to provide direct current to the high-voltage isolation conversion module 40, so that the power supply can be rapidly switched, and the power failure of the main board is avoided.
To sum up, the power supply circuit supporting power supply by multiple power sources of the present invention can support both ac power source and dc power source by setting the ac power source input module, the first dc power source input module and the isolation module, and can support both ac power source and dc power source to supply power; the utility model discloses can also further support alternating current power supply and DC power supply simultaneously through the setting of second DC power supply input module, can also support different output voltage's DC power supply simultaneously. When specifically using, the utility model discloses a support multichannel power supply's supply circuit can support AC220V alternating current power supply, DC220V DC power supply, DC110V DC power supply simultaneously for the mainboard for electric power system's network security equipment provides required low voltage direct current. Therefore, the utility model discloses can satisfy the input demand of multiple power simultaneously, when being applied to network security equipment, can make same network security equipment can be applicable to different service environment.
And simultaneously, the utility model discloses can provide power input simultaneously and when being in power supply state's power outage at multichannel power, switch rapidly by another way mains supply through isolation module to keeping lasting of power supply, avoiding causing the mainboard to fall the electricity, so, the utility model discloses when realizing that the alternating current-direct current is compatible, have the hot function of being equipped with.
Furthermore, the utility model discloses a set up filter circuit between isolation module and high pressure isolation conversion module, can satisfy EMC's demand, the stability of power supply is ensured to the reinforcing circuit interference killing feature.
The utility model discloses a simple circuit design adopts simple components and parts, can realize above-mentioned a plurality of functions promptly, and use cost is low.
From the above, it is obvious to those skilled in the art that various other changes and modifications can be made according to the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protection scope of the claims of the present invention.
Claims (10)
1. A power supply circuit supporting multi-path power supply is characterized by comprising an alternating current power supply input module, a first direct current power supply input module, an isolation module and a high-voltage isolation conversion module, wherein the alternating current power supply input module is used for receiving alternating current input by an external alternating current power supply and rectifying the alternating current into first direct current to output the first direct current, and the output end of the alternating current power supply input module is connected to the first input end of the isolation module; the first direct-current power supply input module is used for receiving direct current input by an external direct-current power supply and outputting the direct current as second direct current, and the output end of the first direct-current power supply input module is connected to the second input end of the isolation module; the output end of the isolation module is connected to the high-voltage isolation and conversion module, the isolation module outputs the received direct current to the high-voltage isolation and conversion module when one of the first input end and the second input end receives the direct current, and the isolation module outputs the higher voltage of the received direct current to the high-voltage isolation and conversion module when both the first input end and the second input end receive the direct current; the high-voltage isolation conversion module is used for converting the received direct current into low-voltage direct current for the mainboard and outputting the low-voltage direct current.
2. The power supply circuit supporting multiple power supplies according to claim 1, further comprising a filter circuit, wherein an output terminal of the isolation module is connected to the high voltage isolation conversion module through the filter circuit.
3. The power supply circuit supporting multiple power supplies according to claim 2, wherein the filter circuit is a pi-type filter circuit.
4. The power supply circuit supporting multiple power supplies according to any one of claims 1-3, wherein the isolation module comprises a first diode and a second diode, an anode of the first diode is the first input terminal, an anode of the second diode is the second input terminal, and a cathode of the first diode and a cathode of the second diode are connected and serve as the output terminal of the isolation module.
5. The power supply circuit supporting multiple power supplies according to claim 1, wherein the ac power input module includes an ac power input interface, an ac overvoltage protection circuit, an ac overcurrent protection circuit, and a rectification module, the ac power input interface is used for connecting an external ac power, the ac overvoltage protection circuit is disposed at the ac power input interface, the ac power input interface is connected to the input end of the rectification module through the ac overcurrent protection circuit, and the output end of the rectification module is connected to the first input end of the isolation module.
6. The power supply circuit supporting multiple power supplies according to claim 5, wherein the ac overvoltage protection circuit includes a first voltage dependent resistor, a second voltage dependent resistor, and a gas discharge tube, the first voltage dependent resistor is disposed between a phase line and a neutral line of the ac power input interface, and the second voltage dependent resistor and the gas discharge tube are connected in series between the neutral line and a ground line of the ac power input interface; the alternating current overcurrent protection circuit comprises a first fuse, and the first fuse is arranged between a phase line of the alternating current power supply input interface and the input end of the rectification module.
7. The power supply circuit supporting multiple power supplies according to claim 1, wherein the first dc power input module includes a first dc power input interface, a dc overvoltage protection circuit and a dc overcurrent protection circuit, the first dc power input interface is used for connecting an external dc power supply, the dc overvoltage protection circuit is disposed at the first dc power input interface, and the first dc power input interface is connected to the second input end of the isolation module through the dc overcurrent protection circuit.
8. The power supply circuit supporting multiple power supplies according to any one of claims 1, 2, 3, 5 and 6, further comprising a second dc power input module, wherein the first dc power input module is configured to receive dc power input from one of a 220V external dc power supply and a 110V external dc power supply; the second direct-current power supply input module is used for receiving direct current input by the other one of a 220V external direct-current power supply and a 110V external direct-current power supply and outputting the received direct current as third direct current, and the output end of the second direct-current power supply input module is connected to the third input end of the isolation module; the isolation module outputs the received direct current to the high-voltage isolation and conversion module when one of the first input end, the second input end and the third input end receives the direct current, and the isolation module outputs the highest voltage of the received direct current to the high-voltage isolation and conversion module when at least two of the first input end, the second input end and the third input end receive the direct current.
9. The power supply circuit supporting multiple power supplies according to claim 8, wherein the isolation module comprises a first diode, a second diode and a third diode, an anode of the first diode is the first input terminal, an anode of the second diode is the second input terminal, an anode of the third diode is the third input terminal, and a cathode of the first diode, a cathode of the second diode and a cathode of the third diode are connected to serve as the output terminal of the isolation module.
10. The power supply circuit supporting multiple power supplies according to claim 9, wherein the first dc power input module comprises a first dc power input interface, a third voltage dependent resistor, and a second fuse, the first dc power input interface is configured to connect to one of a 220V external dc power supply and a 110V external dc power supply, the third voltage dependent resistor is disposed between a power line and a ground line of the first dc power input interface, and the second fuse is disposed between the power line of the first dc power input interface and an anode of the second diode; the second direct-current power supply input module comprises a second direct-current power supply input interface, a fourth voltage dependent resistor and a third fuse, the second direct-current power supply input interface is used for connecting the other one of a 220V external direct-current power supply and a 110V external direct-current power supply, the fourth voltage dependent resistor is arranged between a power line of the second direct-current power supply input interface and a ground wire, and the third fuse is arranged between the power line of the second direct-current power supply input interface and an anode of the third diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222774468.9U CN218783578U (en) | 2022-10-20 | 2022-10-20 | Power supply circuit supporting power supply of multiple power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222774468.9U CN218783578U (en) | 2022-10-20 | 2022-10-20 | Power supply circuit supporting power supply of multiple power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218783578U true CN218783578U (en) | 2023-03-31 |
Family
ID=85710265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222774468.9U Active CN218783578U (en) | 2022-10-20 | 2022-10-20 | Power supply circuit supporting power supply of multiple power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218783578U (en) |
-
2022
- 2022-10-20 CN CN202222774468.9U patent/CN218783578U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011323988B2 (en) | System and method for bidirectional DC-AC power conversion | |
| CN103828187B (en) | The non-isolated AC-DC converter of PFC with positive output bust-boost converter and at input power | |
| AU2011227120B2 (en) | AC-to-DC conversion | |
| CN104135061B (en) | The earth leakage protective DC power-supply system of a kind of band | |
| US9088221B2 (en) | High-voltage power supply module and power supply system | |
| US10096435B2 (en) | Digitalized double-excitation uninterrupted switching power supply | |
| CN112350588B (en) | Power supply device applied to solid-state transformer structure and three-phase power supply system | |
| CN112751325A (en) | DC power supply system and method | |
| WO2010126220A2 (en) | Direct current uninterruptible power supply device having serial compensation rectifier | |
| CN102545373A (en) | Dual power switching device for intelligent electronic equipment | |
| CN205304588U (en) | Multi -path output power supply | |
| CN218783578U (en) | Power supply circuit supporting power supply of multiple power supplies | |
| CN104541443A (en) | Rectifying circuit and method for an unbalanced two phase DC grid | |
| CN109687433B (en) | Flexible transformer substation structure | |
| CN2938640Y (en) | DC power supply conversion circuit and TV. and with multifunction function | |
| CN114793012A (en) | AC-DC hybrid data center power supply system and data center machine room | |
| CN106411148B (en) | A kind of Traction Substation of Electric Railway hands over straight friendship type power supply system structure from electricity consumption | |
| CN100452608C (en) | Bridge type short circuit fault current limiter with single self-on-off switching tube | |
| CN110752661A (en) | Single-phase series-parallel compensation type UPS (uninterrupted power supply) isolated by bidirectional full-bridge high frequency | |
| CN216774369U (en) | Standby power supply | |
| CN221010003U (en) | AC/DC power supply circuit and AC/DC power supply equipment | |
| CN214256131U (en) | Power supply device | |
| CN218633437U (en) | Redundant power supply system | |
| CN219918724U (en) | Power supply device for energy storage converter control system | |
| CN216356488U (en) | Underwater power supply system based on alternating current transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |