A dual-input and output power supply for network communication equipment

Abstract

The present invention discloses a dual-input, dual-output power supply for network communication equipment, including a dual-input power supply, a transformer T, a converter C, and a dual-output power supply. The input ends of the dual-input power supply are respectively provided with protection modules. After passing through the protection modules, the dual-input power supplies are sequentially connected in series with a fuse F1 and a diode assembly; the output ends of the dual-input power supply are integrated and connected into a single power supply. The integrated single power supply is connected to two output circuits. The output circuits are connected to the two output power supplies, and the output power supplies are respectively connected to corresponding network communication electrical equipment. The dual-input, dual-output power supply provided by the system of the present invention overcomes the problems of poor working stability of single-input, single-output power supplies in the prior art, high complexity and easy errors in power supply installation for different communication equipment, etc. The dual-input power supplies provide mutual backup between each other. When one input power supply fails, it does not affect the normal power supply of the equipment, thereby ensuring the working stability and safety of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of network communication equipment, and in particular relates to a dual-input and dual-output power supply for network communication equipment. Background Art

[0002] With the continuous development of communication technology, people are increasingly dependent on network communication equipment, which requires the stability of network communication equipment to avoid problems such as network disconnection that affect normal work and life. At present, the power supply of network equipment such as IoT smart boxes, wireless gateways, security gateways, Ethernet switches and outdoor communication equipment is generally a single-input, single-output power supply mode. For single input, there is no backup input power supply, and there will be a problem of power outage, causing the network equipment to stop working, related supply chain information to be interrupted, and affecting the stability of the operation of the communication equipment; in addition, if the communication equipment is installed in a location that is not easy to repair or disassemble, once such a single input power supply is damaged and cannot work normally, it is difficult to rescue and maintain it in time. For single output, the industrial Internet of Things site often contains multiple types of equipment. Although these devices are mostly low-voltage power input, the required input voltage values ​​are different, so multiple sets of power supplies are required, which makes the equipment installation site more complicated and increases the difficulty of installation. In summary, the single-input and output communication equipment power supplies currently used in the market need to be improved. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the prior art and provide a dual-input and output power supply for network communication equipment with high working stability and simplified installation process.

[0004] Technical solution: The present invention discloses a dual-input and output power supply for network communication equipment, comprising a first input power supply Vin1, a second input power supply Vin2, a transformer T, a converter C, a first output power supply Vout1 and a second output power supply Vout2. The input ends of the first input power supply Vin1 and the second input power supply Vin2 are respectively provided with a first protection module and a second protection module. The first input power supply Vin1 is connected in series with a first fuse F1 and a first diode assembly in sequence after passing through the first protection module; the second input power supply Vin2 is connected in series with a second fuse F2 and a second diode assembly in sequence after passing through the second protection module. The output end of the first diode assembly and the output end of the second diode assembly are integrated and connected into a single power supply. The integrated single power supply is connected to the input end of the transformer T through a first isolating capacitor C1, and the output end of the transformer T is connected to the converter C through a second isolating capacitor C2. The output end of the converter C is connected to two output circuits, including a first output circuit and a second output circuit. The first output circuit is connected to the first output power supply Vout1, and the second output circuit is connected to the second output power supply Vout2. The first output power supply Vout1 and the second output power supply Vout2 are connected to corresponding network communication electrical equipment respectively.

[0005] Further, the first protection module includes a first protection circuit, a second protection circuit, a third protection circuit, a fourth protection circuit and a fifth protection circuit connected in parallel from left to right, the first protection circuit is connected in series with a first varistor MOV1, the second protection circuit is connected in series with a second varistor MOV2 and a third varistor MOV3, the third protection circuit is connected in series with a first protection capacitor C3 and a second protection capacitor C4, the fourth protection circuit is connected in series with a first transient diode TVS1, and the fifth protection circuit is connected in series with a third protection capacitor C5;

[0006] The second protection module includes a sixth protection circuit, a seventh protection circuit, an eighth protection circuit, a ninth protection circuit and a tenth protection circuit connected in parallel from left to right, the sixth protection circuit is connected in series with a fourth varistor MOV4, the seventh protection circuit is connected in series with a fifth varistor MOV5 and a sixth varistor MOV6, the eighth protection circuit is connected in series with a fourth protection capacitor C6 and a fifth protection capacitor C7, the ninth protection circuit is connected in series with a second transient diode TVS2, and the tenth protection circuit is connected in series with a sixth protection capacitor C8.

[0007] Furthermore, a first gas discharge tube GDT1 is provided between the second protection circuit and the third protection circuit of the first protection module, and an input end of the first gas discharge tube GDT1 is connected between the second varistor MOV2 and the third varistor MOV3; an output end of the first gas discharge tube GDT1 is connected between the first protection capacitor C3 and the second protection capacitor C4.

[0008] Furthermore, a second gas discharge tube GDT2 is provided between the seventh protection circuit and the eighth protection circuit of the second protection module, and the input end of the second gas discharge tube GDT2 is connected between the fifth varistor MOV5 and the sixth varistor MOV6; the output end of the second gas discharge tube GDT2 is connected between the fourth protection capacitor C6 and the fifth protection capacitor C7.

[0009] Further, the first diode assembly includes three diodes connected in parallel, which are respectively a first diode D1, a second diode D2 and a third diode D3 from top to bottom;

[0010] The second diode assembly includes three diodes connected in parallel, which are respectively a fourth diode D4, a fifth diode D5 and a sixth diode D6 from top to bottom.

[0011] Further, the first output circuit is provided with a third protection module, the third protection module includes a third fuse F3 located at the positive end and a first protection resistor R1 located at the negative end and connected in series on the total loop, and a first unidirectional conduction module connected in series between the third fuse F3 and the first protection resistor R1, the input end of the first unidirectional conduction module is divided into two branches, one branch is connected to the first output power supply Vout1, and the other branch is connected to the third gas discharge tube GDT3 and then grounded; the output end of the first unidirectional conduction module is divided into two branches, one branch is connected to the ground, and the other branch is connected to the fourth gas discharge tube GDT4 and then grounded;

[0012] The first unidirectional conduction module includes a seventh diode D7, a seventh protection capacitor C9 and a third transient diode TVS3 which are sequentially connected in parallel.

[0013] Further, the second output circuit is provided with a fourth protection module, the fourth protection module includes a fourth fuse F4 located at the positive end and a second protection resistor R2 located at the negative end and connected in series on the total loop, and a second unidirectional conduction module connected in series between the fourth fuse F4 and the second protection resistor R2, the input end of the second unidirectional conduction module is divided into two paths, one branch is connected to the second output power supply Vout2, and the other branch is connected to the fifth gas discharge tube GDT5 and then grounded; the output end of the second unidirectional conduction module is grounded;

[0014] The second unidirectional conduction module includes an eighth diode D8, an eighth protection capacitor C10 and a fourth transient diode TVS4 which are sequentially connected in parallel.

[0015] Furthermore, in order to meet the voltage usage requirements of different devices, the voltages of the first input power Vin1 and the second input power Vin2 are different, and the voltages of the first output power Vout1 and the second output power Vout2 are different.

[0016] Furthermore, the voltage range of the first input power source Vin1 and the second input power source Vin2 is 12V to 220V direct current.

[0017] Furthermore, the voltage range of the first output power source Vout1 and the second output power source Vout2 is 12V to 24V DC.

[0018] Beneficial effects: (1) The system of the present invention is configured as a dual-input power supply. The dual-input power supply design allows the two input power supplies to back up each other. When one has a problem, the other can supply power normally without affecting the normal use of the communication equipment. In addition, for equipment installed in areas where rescue and maintenance are difficult, the dual-power supply design allows the equipment to be used normally even if one of the power supplies is damaged and cannot be repaired, and at the same time provides time guarantee for the maintenance of the power supply. (2) The system of the present invention is designed as a dual-output power supply, which can supply power to communication equipment with different voltage requirements, avoiding the problem of complex installation caused by the need to configure a single output power supply for each power-consuming device in the prior art. Moreover, the dual-output power supplies are independent of each other. Even if one output power supply has a problem, it will not affect the normal operation of the other power supply, thereby ensuring the power supply stability of the communication equipment. (3) The system is also designed with a power supply positive and negative reverse protection mechanism, so that the two power supplies will not cause damage or short circuit to the machine product due to simultaneous power supply. If the positive and negative polarities are plugged in reverse, the power input will fail, and the machine product will just not operate and will not burn out, making the power supply system have a higher safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the circuit structure of a dual-input power supply module of the system of the present invention;

[0020] Figure 2 The figure is a schematic diagram of the circuit structure of the dual output module of the system of the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0022] Example: Figure 1~2As shown, a dual-input and output power supply for network communication equipment includes a first input power supply Vin1, a second input power supply Vin2, a transformer T, a converter C, a first output power supply Vout1 and a second output power supply Vout2, the input ends of the first input power supply Vin1 and the second input power supply Vin2 are respectively provided with a first protection module and a second protection module, the first input power supply Vin1 is connected in series with a first fuse F1 and a first diode component in sequence after passing through the first protection module; the second input power supply Vin2 is connected in series with a second fuse F2 and a second diode component in sequence after passing through the second protection module, the output end of the first diode component and the output end of the second diode component are integrated and connected into a single power supply, the integrated single power supply is connected to the input end of the transformer T through a first blocking capacitor C1, the output end of the transformer T is connected to the converter C through a second blocking capacitor C2, the output end of the converter C is connected to two output circuits, including a first output circuit and a second output circuit, the first output circuit is connected to the first output power supply Vout1, the second output circuit is connected to the second output power supply Vout2, the first output power supply Vout1 and the second output power supply Vout2 are connected to corresponding network communication electrical equipment respectively.

[0023] The first protection module includes a first protection circuit, a second protection circuit, a third protection circuit, a fourth protection circuit and a fifth protection circuit connected in parallel from left to right, the first protection circuit is connected in series with a first varistor MOV1, the second protection circuit is connected in series with a second varistor MOV2 and a third varistor MOV3, the third protection circuit is connected in series with a first protection capacitor C3 and a second protection capacitor C4, the fourth protection circuit is connected in series with a first transient diode TVS1, and the fifth protection circuit is connected in series with a third protection capacitor C5;

[0024] The second protection module includes a sixth protection circuit, a seventh protection circuit, an eighth protection circuit, a ninth protection circuit and a tenth protection circuit connected in parallel from left to right, the sixth protection circuit is connected in series with a fourth varistor MOV4, the seventh protection circuit is connected in series with a fifth varistor MOV5 and a sixth varistor MOV6, the eighth protection circuit is connected in series with a fourth protection capacitor C6 and a fifth protection capacitor C7, the ninth protection circuit is connected in series with a second transient diode TVS2, and the tenth protection circuit is connected in series with a sixth protection capacitor C8;

[0025] A first gas discharge tube GDT1 is provided between the second protection circuit and the third protection circuit of the first protection module, and the input end of the first gas discharge tube GDT1 is connected between the second varistor MOV2 and the third varistor MOV3; the output end of the first gas discharge tube GDT1 is connected between the first protection capacitor C3 and the second protection capacitor C4.

[0026] A second gas discharge tube GDT2 is provided between the seventh protection circuit and the eighth protection circuit of the second protection module, and the input end of the second gas discharge tube GDT2 is connected between the fifth varistor MOV5 and the sixth varistor MOV6; the output end of the second gas discharge tube GDT2 is connected between the fourth protection capacitor C6 and the fifth protection capacitor C7.

[0027] The first diode assembly includes three diodes connected in parallel, which are respectively a first diode D1, a second diode D2 and a third diode D3 from top to bottom;

[0028] The second diode assembly includes three diodes connected in parallel, which are respectively a fourth diode D4, a fifth diode D5 and a sixth diode D6 from top to bottom.

[0029] A third protection module is provided on the first output circuit, and the third protection module includes a third fuse F3 located at the positive end and a first protection resistor R1 located at the negative end and connected in series on the total loop, and a first unidirectional conduction module connected in series between the third fuse F3 and the first protection resistor R1, wherein the input end of the first unidirectional conduction module is divided into two branches, one branch is connected to the first output power supply Vout1, and the other branch is connected to the third gas discharge tube GDT3 and then grounded; the output end of the first unidirectional conduction module is divided into two branches, one branch is connected to the ground, and the other branch is connected to the fourth gas discharge tube GDT4 and then grounded;

[0030] The first unidirectional conduction module includes a seventh diode D7, a seventh protection capacitor C9 and a third transient diode TVS3 which are sequentially connected in parallel.

[0031] A fourth protection module is provided on the second output circuit, the fourth protection module includes a fourth fuse F4 located at the positive end and a second protection resistor R2 located at the negative end and connected in series on the total loop, and a second unidirectional conduction module connected in series between the fourth fuse F4 and the second protection resistor R2, the output end of the second unidirectional conduction module is grounded; the input end of the second unidirectional conduction module is divided into two paths, one branch is connected to the second output power supply Vout2, and the other branch is connected to the fifth gas discharge tube GDT5 and then grounded;

[0032] The second unidirectional conduction module includes an eighth diode D8, an eighth protection capacitor C10 and a fourth transient diode TVS4 which are sequentially connected in parallel.

[0033] The voltages of the first input power supply Vin1 and the second input power supply Vin2 are different, and the voltages of the first output power supply Vout1 and the second output power supply Vout2 are different; the voltage range of the first input power supply Vin1 and the second input power supply Vin2 is 12V~220V DC; the voltage range of the first output power supply Vout1 and the second output power supply Vout2 is 12V~24V DC.

[0034] The dual-input, dual-output power supply provided by the system of the present invention overcomes the poor working stability of the single-input, single-output power supply in the prior art. In view of the high complexity and error-proneness of the power supply installation of different communication equipment, the dual-input power supplies provide mutual backup. When one input power supply fails, it does not affect the normal power supply of the equipment, thereby ensuring the working stability and safety of the equipment.

[0035] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A dual-input and dual-output power supply for network communication equipment, characterized in that: It includes a first input power supply Vin1, a second input power supply Vin2, a transformer T, a converter C, a first output power supply Vout1 and a second output power supply Vout2, the input ends of the first input power supply Vin1 and the second input power supply Vin2 are respectively provided with a first protection module and a second protection module, the first input power supply Vin1 is connected in series with a first fuse F1 and a first diode component in sequence after passing through the first protection module; the second input power supply Vin2 is connected in series with a second fuse F2 and a second diode component in sequence after passing through the second protection module, the output end of the first diode component and the output end of the second diode component are integrated and connected into a single power supply, the integrated single power supply is connected to the input end of the transformer T through a first blocking capacitor C1, the output end of the transformer T is connected to the converter C through a second blocking capacitor C2, the output end of the converter C is connected to two output circuits, including a first output circuit and a second output circuit, the first output circuit is connected to the first output power supply Vout1, the second output circuit is connected to the second output power supply Vout2, the first output power supply Vout1 and the second output power supply Vout2 are connected to corresponding network communication electrical equipment respectively; The first protection module includes a first protection circuit, a second protection circuit, a third protection circuit, a fourth protection circuit and a fifth protection circuit connected in parallel from left to right, the first protection circuit is connected in series with a first varistor MOV1, the second protection circuit is connected in series with a second varistor MOV2 and a third varistor MOV3, the third protection circuit is connected in series with a first protection capacitor C3 and a second protection capacitor C4, the fourth protection circuit is connected in series with a first transient diode TVS1, and the fifth protection circuit is connected in series with a third protection capacitor C5; The second protection module includes a sixth protection circuit, a seventh protection circuit, an eighth protection circuit, a ninth protection circuit and a tenth protection circuit connected in parallel from left to right, the sixth protection circuit is connected in series with a fourth varistor MOV4, the seventh protection circuit is connected in series with a fifth varistor MOV5 and a sixth varistor MOV6, the eighth protection circuit is connected in series with a fourth protection capacitor C6 and a fifth protection capacitor C7, the ninth protection circuit is connected in series with a second transient diode TVS2, and the tenth protection circuit is connected in series with a sixth protection capacitor C8; The first diode assembly includes three diodes connected in parallel, which are respectively a first diode D1, a second diode D2 and a third diode D3 from top to bottom; The second diode assembly includes three diodes connected in parallel, which are respectively a fourth diode D4, a fifth diode D5 and a sixth diode D6 from top to bottom; The first output circuit is provided with a third protection module, the third protection module includes a third fuse F3 located at the positive end and a first protection resistor R1 located at the negative end and connected in series on the total loop, and a first unidirectional conduction module connected in series between the third fuse F3 and the first protection resistor R1, the input end of the first unidirectional conduction module is divided into two branches, one branch is connected to the first output power supply Vout1, and the other branch is connected to the third gas discharge tube GDT3 and then grounded; the output end of the first unidirectional conduction module is divided into two branches, one branch is connected to the ground, and the other branch is connected to the fourth gas discharge tube GDT4 and then grounded; The first unidirectional conduction module includes a seventh diode D7, a seventh protection capacitor C9 and a third transient diode TVS3 which are sequentially connected in parallel.

2. The dual-input and dual-output power supply for network communication equipment according to claim 1, characterized in that: A first gas discharge tube GDT1 is provided between the second protection circuit and the third protection circuit of the first protection module, and the input end of the first gas discharge tube GDT1 is connected between the second varistor MOV2 and the third varistor MOV3; the output end of the first gas discharge tube GDT1 is connected between the first protection capacitor C3 and the second protection capacitor C4.

3. The dual-input and dual-output power supply for network communication equipment according to claim 2, characterized in that: A second gas discharge tube GDT2 is provided between the seventh protection circuit and the eighth protection circuit of the second protection module, and the input end of the second gas discharge tube GDT2 is connected between the fifth varistor MOV5 and the sixth varistor MOV6; the output end of the second gas discharge tube GDT2 is connected between the fourth protection capacitor C6 and the fifth protection capacitor C7.

4. The dual-input and dual-output power supply for network communication equipment according to claim 1, characterized in that: The second output circuit is provided with a fourth protection module, the fourth protection module includes a fourth fuse F4 located at the positive end and a second protection resistor R2 located at the negative end and connected in series on the total loop, and a second unidirectional conduction module connected in series between the fourth fuse F4 and the second protection resistor R2, the input end of the second unidirectional conduction module is divided into two paths, one branch is connected to the second output power supply Vout2, and the other branch is connected to the fifth gas discharge tube GDT5 and then grounded; the output end of the second unidirectional conduction module is grounded; The second unidirectional conduction module includes an eighth diode D8, an eighth protection capacitor C10 and a fourth transient diode TVS4 which are sequentially connected in parallel.

5. The dual-input and dual-output power supply for network communication equipment according to claim 1, characterized in that: The voltages of the first input power source Vin1 and the second input power source Vin2 are different, and the voltages of the first output power source Vout1 and the second output power source Vout2 are different.

6. The dual-input and dual-output power supply for network communication equipment according to claim 5, characterized in that: The voltage range of the first input power source Vin1 and the second input power source Vin2 is 12V to 220V DC.

7. The dual-input and dual-output power supply for network communication equipment according to claim 6, characterized in that: The voltage range of the first output power source Vout1 and the second output power source Vout2 is 12V to 24V DC.

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