CN213185515U - Time-delay power-on redundant power supply circuit - Google Patents
Time-delay power-on redundant power supply circuit Download PDFInfo
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- CN213185515U CN213185515U CN202021902564.1U CN202021902564U CN213185515U CN 213185515 U CN213185515 U CN 213185515U CN 202021902564 U CN202021902564 U CN 202021902564U CN 213185515 U CN213185515 U CN 213185515U
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Abstract
The utility model provides a redundant power supply circuit of electricity on time delay, include: the circuit comprises a first power supply circuit, a second power supply circuit, a redundant circuit and a delay control circuit; the input end of the redundancy circuit is electrically connected with the output end of the first power supply circuit, the input end of the redundancy circuit is electrically connected with the output end of the second power supply circuit, and the output ends of the first power supply circuit and the second power supply circuit are electrically connected with the input end of the delay control circuit; the redundancy circuit is electrically connected with the delay circuit in a matched mode, the redundancy function is achieved, meanwhile, the delay power-on effect is provided, the delay power-on protection effect is achieved for electric equipment, and the redundancy circuit is more widely applied.
Description
Technical Field
The utility model relates to a power supply circuit field, concretely relates to redundant power supply circuit of electricity on time delay.
Background
For many devices requiring continuous operation, in order to ensure the continuity of operation, a backup power supply needs to be selected for the devices, so that the operation of the devices can be protected from being affected when a common power supply fails. Some existing backup power supplies need manual input. In addition, after the common power supply is repaired, the existing backup power supply cannot automatically quit, so that the workload is increased for the operation and maintenance of the power supply.
Chinese patent publication No. CN110198075A discloses a redundant backup power supply, a chip and an electronic device, wherein the redundant backup power supply includes: the power supply comprises a first power supply, a second power supply, a pull-down resistor, a capacitor and a triode; the output end of the first power supply is connected with one end of the pull-down resistor and the collector of the triode; the output end of the second power supply is connected with the emitting electrode of the triode, and the collector of the triode is the output end of the redundant backup power supply; the output voltage of the second power supply is greater than the output voltage of the first power supply; the capacitor is connected between the base electrode of the triode and the pull-down resistor. According to the redundant backup power supply, the chip and the electronic equipment, the second power supply for redundant backup can be switched in real time when needed through the triode, and can be rapidly and automatically quit after the first power supply is powered on again, so that the problems that the backup power supply is switched in and delayed and cannot be automatically quitted in the prior art are solved. Although the invention discloses the power supply with the redundancy function, the power supply with the redundancy function only has the redundancy function, the current equipment power supply usually has the requirement of delayed power-on, and the redundant power supply of the application lacks a circuit for delayed power-on, so that the application cannot provide the effect of protecting the power-on equipment by delayed power-on, and the use environment is limited.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect of the prior art, the utility model aims to solve the technical problem that a redundant power supply circuit of electricity is gone up in time delay is proposed, wherein is connected redundant circuit and time delay circuit cooperation electricity, still provides the effect of electricity in the time delay when realizing redundant function, plays the protection effect of electricity in the time delay for the consumer, and the application is more extensive.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a pair of redundant power supply circuit of electricity on time delay, include: the circuit comprises a first power supply circuit, a second power supply circuit, a redundant circuit and a delay control circuit; the input end of the redundancy circuit is electrically connected with the output end of the first power supply circuit, the input end of the redundancy circuit is electrically connected with the output end of the second power supply circuit, and the output ends of the first power supply circuit and the second power supply circuit are electrically connected with the input end of the delay control circuit.
Preferably, the delay control circuit includes: a delay circuit and a switch circuit; the input end of the delay circuit is electrically connected with the output ends of the first power supply circuit and the second power supply circuit, the output end of the delay circuit is electrically connected with the input end of the switch circuit, and the output end of the switch circuit is electrically connected with the load.
Preferably, the delay circuit includes: the time delay chip, the time delay indicator light and the output indicator light; the delay indicator light is connected to the input end of the delay chip, and the output end of the delay chip is electrically connected with the switch circuit through the output indicator light.
Preferably, the first power supply circuit and the second power supply circuit each include: the device comprises a power supply processing circuit, a control circuit and a detection circuit; the input end of the power supply processing circuit is electrically connected with the power supply, the output end of the power supply processing circuit is electrically connected with the input end of the detection circuit, the output end of the detection circuit is electrically connected with the input end of the control end control circuit, and the output end of the control circuit is electrically connected with the power supply processing circuit.
Preferably, the first power supply circuit and the second power supply circuit each further include: the overvoltage protection circuit is electrically connected with the input end of the control circuit through an optical coupling isolator, the power supply processing circuit is electrically connected with the first ends of the overheat protection circuit and the overload protection circuit respectively, and the second ends of the overheat protection circuit and the overload protection circuit are electrically connected with the control circuit respectively.
Preferably, the power supply processing circuit comprises a first rectifying and filtering circuit, a PFC circuit, a switching circuit and a second rectifying and filtering circuit; the input end of the first rectifying and filtering circuit is connected with the power input, the output end of the first rectifying and filtering circuit is electrically connected with the input end of the PFC circuit, the output end of the PFC circuit is electrically connected with the input end of the switching circuit, and the output end of the switching circuit is electrically connected with the input end of the second rectifying and filtering circuit.
Preferably, the redundancy circuit includes: the indicating lamp is connected with the optical coupler isolator in series, the indicating lamp is electrically connected with the first power supply circuit, and the optical coupler isolator is electrically connected with the second power supply circuit.
The utility model has the advantages that:
the utility model provides a redundant power supply circuit of time delay power-on, input power inserts to first power supply circuit and second power supply circuit, and the redundant circuit that is equipped with between first power supply circuit and the second power supply circuit can be used for judging by which power supply circuit power supply operation, has realized the function of redundant power supply; the output ends of the first power supply circuit and the second power supply circuit are electrically connected with the delay control circuit, so that the output of the first power supply circuit and the output of the second power supply circuit can be controlled in delay electrification, the delay electrification of the redundant power supply circuit is realized while the redundant power supply function is realized, and the protection effect of delay electrification is achieved for the electric equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of an overall circuit provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a first power supply circuit and a second power supply circuit provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of a delay circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a switching circuit provided in an embodiment of the present invention;
fig. 5 is a schematic diagram of a redundant circuit provided in an embodiment of the present invention.
The attached drawings are as follows: 1 a first power supply circuit; 2 a second power supply circuit; 3 a redundancy circuit; 4 a delay control circuit; 41 a delay circuit; 411 a time delay chip; 412 a time delay indicator light; 413 output indicator light; 42 a switching circuit; 5a power supply processing circuit; 51 a first rectifying and filtering circuit; 52PFC circuit; 53 a switching circuit; 54 a second rectifying and filtering circuit; 6 a detection circuit; 7 a control circuit; 8 an overvoltage protection circuit; 9 an overload protection circuit; 10 over-temperature protection circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the redundant power supply circuit with delayed power-up provided in this embodiment includes: a first power supply circuit 1, a second power supply circuit 2, a redundant circuit 3, and a delay control circuit 74; the input end of the redundant circuit 3 is electrically connected with the output end of the first power supply circuit 1, the input end of the redundant circuit 3 is electrically connected with the output end of the second power supply circuit 2, and the output ends of the first power supply circuit 1 and the second power supply circuit 2 are both electrically connected with the input end of the delay control circuit 74. Specifically, the redundancy circuit 3 is arranged between the output ends of the first power supply circuit 1 and the second power supply circuit 2, and is used for detecting the output conditions of the first power supply circuit 1 and the second power supply circuit 2, so that only one power supply circuit is used for supplying power and outputting power, and the running stability of the equipment is ensured; for the problem that the large-scale equipment is easy to cause faults of the equipment due to large signal impact if the large-scale equipment is powered on instantly when a power supply is switched, the delay control circuit 74 is connected to the output ends of the first power supply circuit 1 and the second power supply circuit 2 and used for delaying the output of the first power supply circuit 1 and the second power supply circuit 2, and the effect of protecting the powered equipment is achieved by delaying the power on for the electric equipment.
As shown in fig. 3, the delay control circuit 74 includes: a delay circuit 41 and a switch circuit 42; the input end of the delay circuit 41 is electrically connected with the output ends of the first power supply circuit 1 and the second power supply circuit 2, the output end of the delay circuit 41 is electrically connected with the input end of the switch circuit 42, and the output end of the switch circuit 42 is electrically connected with the load. Specifically, the delay circuit 41 is mainly used for setting a delay time, delaying the outputs of the first power supply circuit 1 and the second power supply circuit 2 by a predetermined delay time, sending a control signal to the switch circuit 42 after delaying the delay, and performing a switching action after the switch circuit 42 receives the control signal of the delay circuit 41 to realize the effect of supplying power to the power supply device.
Preferably, the delay circuit 41 includes: a delay chip 411, a delay indicator 412, an output indicator 413; the delay indicator 412 is connected to an input terminal of the delay chip 411, and an output terminal of the delay chip 411 is electrically connected to the switch circuit 42 through the output indicator 413. Specifically, the model of the delay chip 411 used in this embodiment is NE555, a first pin of the delay chip 411 is grounded, a second pin and a sixth pin of the delay chip 411 are connected in series and then connected to a filter circuit, a third pin of the delay chip 411 is sequentially connected to an output indicator lamp 413, a resistor R101, and a base terminal of a triode Q5, an emitter of a triode Q5 is grounded, a collector of the triode Q5 is connected to a zener diode and then connected to a switch circuit 42, a fourth pin of the delay chip 411 is connected to a power input end and then connected to a resistor R102 and a delay indicator lamp 412 in series and then grounded, a 5 th pin of the delay chip 411 is connected to a capacitor C80 and then grounded, a seventh pin of the delay chip 411 is floating, and an eighth pin of the delay chip 411 is connected to a capacitor ET37 and then connected to a filter circuit; the time delay of the time delay circuit 41 at different times can be realized by selecting resistors and capacitors with different capacity specifications, when the time delay circuit 41 is delaying, the time delay indicator lamp 412 gives out light to indicate that the time delay is in the process of delaying, the output indicator lamp 413 is connected between the time delay circuit 41 and the switch circuit 42, and when the time delay circuit 41 controls the switch circuit 42 to output, the output indicator lamp 413 gives out light to indicate that the time delay control circuit 74 is outputting work.
As shown in fig. 2, the first power supply circuit 1 and the second power supply circuit 2 each include: a power supply processing circuit 5, a control circuit 7 and a detection circuit 6; the input end of the power supply processing circuit 5 is electrically connected with a power supply, the output end of the power supply processing circuit 5 is electrically connected with the input end of the detection circuit 6, the output end of the detection circuit 6 is electrically connected with the input end of the control end control circuit 7, and the output end of the control circuit 7 is electrically connected with the power supply processing circuit 5.
The power supply processing circuit 5 comprises a first rectifying and filtering circuit 51, a PFC circuit 52, a switching circuit 53 and a second rectifying and filtering circuit 54; the input end of the first rectifying and filtering circuit 51 is connected with the power input, the output end of the first rectifying and filtering circuit 51 is electrically connected with the input end of the PFC circuit 52, the output end of the PFC circuit 52 is electrically connected with the input end of the switching circuit 53, and the output end of the switching circuit 53 is electrically connected with the input end of the second rectifying and filtering circuit 54. Specifically, the power supply processing circuit 5 includes a first rectifying and filtering circuit 51, a PFC circuit 52, a switching circuit 53, and a second rectifying and filtering circuit 54, which are connected in sequence; an optical coupling isolator is connected in series between the detection circuit 6 and the control circuit 7 and is used for isolating the control circuit 7 from an external circuit and preventing an external high-voltage circuit from influencing the low-voltage control circuit 7; the power input is connected to the first rectifying and filtering circuit 51, and the alternating current of the power is input into the rectifying and filtering circuit to output the direct current to the PFC circuit 52; since the phase difference between the power input current and the voltage will cause a loss of the exchanged power, the PFC circuit 52 is required to increase the power factor; the switching circuit 53 is used for switching the power supply output or off, and functions as a switch; the second rectifying and filtering circuit 54 is a dc-to-dc converter, i.e. a buck-boost converter, which converts the voltage into a voltage suitable for the electric equipment; the detection circuit 6 is connected with the output end of the second rectifying and filtering circuit 54 and then connected with the input end of the control circuit 7, and the detection circuit 6 is used for detecting whether the second rectifying and filtering circuit 54 outputs and detecting the signal of the redundant circuit 3; the control circuit 7 is used for controlling the output or the off state of the switching circuit 53, and meanwhile, the control circuit 7 also collects the feedback signal of the detection circuit 6 and carries out relative control on the switching circuit 53 according to the feedback signal of the detection circuit 6; the redundancy circuit 3 is connected between the output ends of the first power supply circuit 1 and the second power supply circuit 2, meanwhile, the redundancy circuit 3 is also electrically connected with the input end of the detection circuit 6, and the detection circuit 6 judges whether the other power supply circuit outputs through the redundancy circuit 3; for example, the first power supply circuit 1 outputs electric energy to the load device, the second power supply circuit 2 does not work to output electric energy, when the first power supply circuit 1 fails, the detection circuit 6 of the second power supply circuit 2 acquires a non-output state of the first power supply circuit 1 through the redundancy circuit 3 and then sends a signal to the control circuit 7, and the control circuit 7 controls the switching circuit 53 to output electric energy, so that the second power supply circuit 2 can supply power even though the first power supply circuit 1 is replaced.
Preferably, the first power supply circuit 1 and the second power supply circuit 2 each further include: overvoltage crowbar 8, excess temperature protection circuit 10, overload protection circuit 9, overvoltage crowbar 8 is connected with control circuit 7's input electricity through the opto-isolator, and power processing circuit 5 is connected with excess temperature protection circuit 10 and overload protection circuit 9's first end electricity respectively, and excess temperature protection circuit 10 and overload protection circuit 9's second end are connected with control circuit 7 electricity respectively. Specifically, the optocoupler isolator is connected in series between the overvoltage protection circuit 8 and the control circuit 7, and is used for isolating the control circuit 7 from an external circuit and preventing an external high-voltage circuit from influencing the low-voltage control circuit 7; the over-temperature protection circuit 10 is connected in series between the switching circuit 53 and the control circuit 7, the overload protection circuit 9 is connected in series between the switching circuit 53 and the control circuit 7, and the over-temperature protection circuit 10 is not connected with the overload protection circuit 9; the control circuit 7 judges whether the circuit is abnormal or not by collecting signals of the overvoltage protection circuit 8, the over-temperature protection circuit 10 and the overload protection circuit 9, and when the circuit is abnormal, such as overvoltage, over-temperature, overload and the like, the control circuit 7 controls the switching circuit 53 to be disconnected and output, so that the overall effect of the protection circuit is achieved.
As shown in fig. 4, the redundancy circuit 3 includes: the indicating lamp is connected with the optical coupler isolator in series, the indicating lamp is electrically connected with the first power supply circuit 1, and the optical coupler isolator is electrically connected with the second power supply circuit 2. Specifically, the redundant circuit 3 further includes a resistor R64, a resistor R1, a capacitor C1, a resistor R2, and a capacitor C2; the output end of the first power supply circuit 1 is connected with a resistor R64 and then connected with an indicator lamp in series, the indicator lamp is connected with one end of a resistor R1 and one end of a capacitor C1 which are connected in parallel in series, the other end of the resistor R1 and the other end of the capacitor C1 which are connected in parallel are connected with the light emitting diode end of the optical coupler isolator in series, the light receiver end of the optical coupler isolator is connected with a capacitor C2 in parallel, a resistor R2 is connected with a pin No. 4 of the optical coupler isolator in series, and a No. 4 corner of the.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A delayed power-up redundant power supply circuit, comprising: the circuit comprises a first power supply circuit (1), a second power supply circuit (2), a redundant circuit (3) and a delay control circuit (4);
the input end of the redundant circuit (3) is electrically connected with the output end of the first power supply circuit (1), the input end of the redundant circuit (3) is electrically connected with the output end of the second power supply circuit (2), and the output ends of the first power supply circuit (1) and the second power supply circuit (2) are electrically connected with the input end of the delay control circuit (4).
2. A delayed power-up redundant power supply circuit as claimed in claim 1, characterized in that said delay control circuit (4) comprises: a delay circuit (41) and a switch circuit (42);
the input end of the delay circuit (41) is electrically connected with the output ends of the first power supply circuit (1) and the second power supply circuit (2), the output end of the delay circuit (41) is electrically connected with the input end of the switch circuit (42), and the output end of the switch circuit (42) is electrically connected with a load.
3. A delayed power-up redundant power supply circuit as claimed in claim 2, wherein said delay circuit (41) comprises: a delay chip (411), a delay indicator lamp (412) and an output indicator lamp (413);
the delay indicator lamp (412) is connected to the input end of the delay chip (411), and the output end of the delay chip (411) is electrically connected with the switch circuit (42) through the output indicator lamp (413).
4. A redundant power supply circuit with delayed power-up according to claim 1, characterized in that the first power supply circuit (1) and the second power supply circuit (2) each comprise: a power supply processing circuit (5), a control circuit (7) and a detection circuit (6);
the input of power processing circuit (5) is connected with the power electricity, the output of power processing circuit (5) with the input electricity of detection circuitry (6) is connected, the output of detection circuitry (6) with the input electricity of control end control circuit (7) is connected, the output of control circuit (7) with the electricity of power processing circuit (5) is connected.
5. A redundant power supply circuit with delayed power-up according to claim 4, characterized in that the first power supply circuit (1) and the second power supply circuit (2) each further comprise: overvoltage crowbar (8), excess temperature protection circuit (10), overload protection circuit (9), overvoltage crowbar (8) through optical coupling isolator with the input electricity of control circuit (7) is connected, power processing circuit (5) respectively with excess temperature protection circuit (10) with the first end electricity of overload protection circuit (9) is connected, excess temperature protection circuit (10) with the second end of overload protection circuit (9) respectively with control circuit (7) electricity is connected.
6. The redundant power supply circuit with delayed power-on according to claim 4, wherein the power supply processing circuit (5) comprises a first rectifying and filtering circuit (51), a PFC circuit (52), a switching circuit (53), and a second rectifying and filtering circuit (54);
the input end of the first rectifying and filtering circuit (51) is connected with the input end of a power supply, the output end of the first rectifying and filtering circuit (51) is electrically connected with the input end of the PFC circuit (52), the output end of the PFC circuit (52) is electrically connected with the input end of the switching circuit (53), and the output end of the switching circuit (53) is electrically connected with the input end of the second rectifying and filtering circuit (54).
7. A redundant power supply circuit powered on with a delay as claimed in claim 1, characterized in that said redundant circuit (3) comprises: the indicating lamp is connected with the optical coupler isolator in series, the indicating lamp is electrically connected with the first power supply circuit (1), and the optical coupler isolator is electrically connected with the second power supply circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021902564.1U CN213185515U (en) | 2020-09-03 | 2020-09-03 | Time-delay power-on redundant power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021902564.1U CN213185515U (en) | 2020-09-03 | 2020-09-03 | Time-delay power-on redundant power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213185515U true CN213185515U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021902564.1U Active CN213185515U (en) | 2020-09-03 | 2020-09-03 | Time-delay power-on redundant power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213185515U (en) |
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2020
- 2020-09-03 CN CN202021902564.1U patent/CN213185515U/en active Active
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