Control circuit for orderly power supply of power supply

Abstract

The utility model discloses a control circuit for orderly power supply of a power supply. The control circuit comprises a first power supply input, a second power supply control circuit, a third power supply control circuit and an anti-backflow circuit, the first power supply input is respectively connected with the second power supply control circuit and the power supply output end, the second power supply control circuit is respectively connected with the second power supply input, the third power supply control circuit and the power supply output end, and the third power supply control circuit is respectively connected with the third power supply input and the power supply output end. And the anti-backflow circuit is respectively connected with the first power supply input, the second power supply control circuit and the third power supply control circuit. According to the utility model, the technical problem of how to control multiple groups of power supplies to supply power orderly without carrying out gradient division on voltage values of the power supplies is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electric power technical field especially relates to a control circuit for power orderly power supply. BACKGROUND

[0002] At present, the relevant technical specifications issued by the state grid generally require the backup power supply of the electric power collection terminal to have the power supply capacity of two kinds of backup power supply of nickel hydrogen battery and super capacitor, plus the power supply of commercial power, a total of three groups of power supply for system power supply. Among them, the commercial power preferentially provides power supply for the system, and the backup power supply provides power supply for the system in the case of commercial power outage. The patent document with the application number 201910602942.X discloses an electric energy quality detection method, obtains the power supply attribute information corresponding to the uninterrupted power supply, and determines the power supply state information between the uninterrupted power supply and different loads according to the power supply attribute information; according to the power supply state information, the commercial power supply state information and / or the storage battery supply state information corresponding to the uninterrupted power supply are determined; according to the commercial power supply state information and / or the storage battery supply state information, the inverter switching state information of the uninterrupted power supply is determined; according to the inverter switching state information, the electric energy quality state information corresponding to the uninterrupted power supply is determined. At present, the voltage gradient design is generally used, that is, by setting the voltage values of the three groups of power supply to different voltage values, the power supply with high voltage is preferentially discharged, and then the power supply with low voltage is discharged. This kind of way needs to set the three groups of power supply to different voltage values within the system power supply voltage range, therefore, there are two problems to be solved, the first is that the voltage of nickel hydrogen battery is unstable, the size of the energy stored in the battery and the change of the environmental temperature will obviously affect the battery voltage value, thereby causing the discharge order not to conform to the design expectation, if the nickel hydrogen battery discharge circuit is designed to be constant voltage, it will increase the complexity and cost of the circuit; the second is that the voltage of the three groups of power supply is divided by gradient, which will cause the voltage of the system power supply to change obviously, which may cause the abnormal work of the system. Therefore, it is urgent to propose a control circuit for power orderly power supply to solve the technical problem of how to control the orderly power supply of multiple groups of power supply without gradient division of the voltage value of the power supply. CONTENT OF UTILITY MODEL

[0003] The main purpose of the utility model is to propose a control circuit for power orderly power supply, which aims to solve the technical problem of how to control the orderly power supply of multiple groups of power supply without gradient division of the voltage value of the power supply.

[0004] In order to achieve the above purpose, the utility model provides a control circuit for power orderly power supply, wherein the control circuit for power orderly power supply comprises:

[0005] The first power input, the second power control circuit, the third power control circuit and the anti-inrush circuit; the first power input is connected with the second power control circuit and the power output terminal respectively, the second power control circuit is connected with the second power input, the third power control circuit and the power output terminal respectively, the third power control circuit is connected with the third power input and the power output terminal respectively, and the anti-inrush circuit is connected with the first power input, the second power control circuit and the third power control circuit respectively.

[0006] In one preferred embodiment, the first power input is a mains power supply.

[0007] In one preferred embodiment, the anti-inrush circuit comprises a first anti-inrush circuit; the first anti-inrush circuit comprises a diode V1; the anode of the diode V1 is connected with the first power input, and the cathode of the diode V1 is connected with the power output terminal.

[0008] In one preferred embodiment, the second power control circuit comprises a resistor R1, a capacitor C1 and a MOS tube V3; the gate of the resistor R1, the capacitor C1 and the MOS tube V3 is connected with the first power input, the other end of the resistor R1 and the capacitor C1 is grounded, the source of the MOS tube V3 is connected with the second power input, and the drain of the MOS tube V3 is connected with the power output terminal.

[0009] In one preferred embodiment, the anti-inrush circuit comprises a second anti-inrush circuit; the second anti-inrush circuit comprises a diode V4; the anode of the diode V4 is connected with the drain of the MOS tube V3, and the cathode of the diode V4 is connected with the power output terminal.

[0010] In one preferred embodiment, the second power input is a backup power supply which is powered by a super capacitor through a power conversion.

[0011] In one preferred embodiment, the third power control circuit comprises a diode V2, a resistor R2, a capacitor C2 and a MOS tube V5; the anode of the diode V2 is connected with the first power input, the cathode of the diode V2 is connected with the resistor R2, the capacitor C2, the gate of the MOS tube V5 and the second power control circuit respectively, the other end of the resistor R2 and the capacitor C2 is grounded, the source of the MOS tube V5 is connected with the third power input, and the drain of the MOS tube V5 is connected with the power output terminal.

[0012] In one preferred embodiment, the anti-inrush circuit comprises a third anti-inrush circuit; the third anti-inrush circuit comprises a diode V6, the anode of the diode V6 is connected with the third power input, and the cathode of the diode V6 is connected with the source of the MOS tube V5.

[0013] In one preferred embodiment, the third power input is a backup power supply which is powered by a nickel-hydrogen battery.

[0014] The utility model discloses a technical scheme above-mentioned, this control circuit for power orderly power supply includes: first power input, second power control circuit, third power control circuit and prevent back -in circuit, first power input is connected with second power control circuit, power output respectively, second power control circuit is connected with second power input, third power control circuit and power output respectively, third power control circuit is connected with third power input and power output respectively, prevent back -in circuit is connected with first power input, second power control circuit and third power control circuit respectively. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the technical scheme of the utility model embodiment or prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.

[0016] Fig. 1 It is a structural schematic diagram of the control circuit for power orderly power supply of the utility model embodiment;

[0017] Fig. 2 It is a circuit schematic diagram of the control circuit for power orderly power supply of the utility model embodiment.

[0018] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiment and referring to the drawings. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model embodiment will be described clearly and completely by combining with the drawings in the utility model embodiment, obviously, the described embodiment is only a part of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features.

[0021] Furthermore, the technical solutions of the various embodiments of the present application can be combined with each other, but must be based on the realization of the ordinary skilled in the art, and when the combination of the technical solutions appears contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope required by the present application.

[0022] Referring to Figs. 1-2 According to an aspect of the present application, the present application provides a control circuit for orderly power supply of power supply, wherein the control circuit for orderly power supply of power supply comprises:

[0023] The first power input, the second power control circuit, the third power control circuit, the anti-backflow circuit and the energy storage circuit are connected with the second power control circuit, the power output end, the second power input, the third power control circuit and the power output end, the third power input, the energy storage circuit and the power output end, and the first power input, the second power control circuit and the third power control circuit respectively.

[0024] Specifically, in the present embodiment, the first power input is a commercial power supply.

[0025] Specifically, in the present embodiment, the anti-backflow circuit comprises a first anti-backflow circuit, and the first anti-backflow circuit comprises a diode V1, wherein the anode of the diode V1 is connected with the first power input, the cathode of the diode V1 is connected with the power output end, and the diode V1 is used for preventing the first power input from backflowing.

[0026] Specifically, in the present embodiment, the second power control circuit comprises a resistor R1, a capacitor C1 and a MOS tube V3, wherein the gate of the resistor R1, the capacitor C1 and the MOS tube V3 is connected with the first power input, the other end of the resistor R1 and the capacitor C1 is grounded, the source of the MOS tube V3 is connected with the second power input, and the drain of the MOS tube V3 is connected with the power output end; the resistor R1 can maintain the gate of the MOS tube V3 at low level after the first power is turned off, and the capacitor C1 is arranged to slowly start the MOS tube V3.

[0027] Specifically, in the embodiment, the MOS tube V3 is a PMOS tube, the MOS tube V3 is an n-type substrate, a p-channel, a hole-flowing motion current MOS tube, and the MOS tube V3 is turned on when the voltage between the gate voltage and the source voltage is less than the threshold value.

[0028] Specifically, in the embodiment, the anti-inversion circuit includes a second anti-inversion circuit; the second anti-inversion circuit includes a diode V4; the anode of the diode V4 is connected with the drain of the MOS tube V3, the cathode of the diode V4 is connected with the power output end, and the diode V4 is used for preventing the second power input from inverting.

[0029] Specifically, in the embodiment, the second power input is a backup power supply powered by a super capacitor through a power conversion.

[0030] Specifically, in the embodiment, the third power control circuit includes a diode V2, a resistor R2, a capacitor C2, and a MOS tube V5; the anode of the diode V2 is connected with the first power input, the cathode of the diode V2 is connected with the resistor R2, the capacitor C2, the gate of the MOS tube V5, and the second power control circuit respectively, the other end of the resistor R2 and the capacitor C2 is grounded, the source of the MOS tube V5 is connected with the third power input, and the drain of the MOS tube V5 is connected with the power output end; the resistor R2 can maintain the gate of the MOS tube V5 at a low level after the second power is turned off, and the capacitor C2 is used for slowly starting the MOS tube V4.

[0031] Specifically, in the embodiment, the MOS tube V5 is a PMOS tube, the MOS tube V5 is an n-type substrate, a p-channel, a hole-flowing motion current MOS tube, and the MOS tube V5 is turned on when the voltage between the gate voltage and the source voltage is less than the threshold value.

[0032] Specifically, in the embodiment, the anti-inversion circuit includes a third anti-inversion circuit; the third anti-inversion circuit includes a diode V6, the anode of the diode V6 is connected with the third power input, the cathode of the diode V6 is connected with the source of the MOS tube V5, and the diode V6 is used for preventing the third power input from inverting.

[0033] Specifically, in the embodiment, the third power input is a backup power supply powered by a nickel-hydrogen battery.

[0034] Specifically, in the embodiment, the first power input is a mains power supply, the second power input is a backup power supply powered by a super capacitor through a power conversion, the super capacitor is between the battery and the capacitor, the super capacitor has a large capacity and can be used as a battery, has good reversibility, long points, and high discharge efficiency; and the third power input is a backup power supply powered by a nickel-hydrogen battery.

[0035] Specifically, in the embodiment, the energy storage circuit comprises a resistor R3 and a capacitor C3; one end of the resistor R3 is connected with the capacitor C3 and the drain of a MOS tube V5, and the other end of the resistor R3 and the capacitor C3 is connected with the ground; the capacitor C3 is used for starting energy storage, and can avoid a large drop of the voltage at the output end of the power supply during the power supply switching process, thereby maintaining the stability of the system power supply.

[0036] Specifically, in the embodiment, when the first power input V5P0 has power, the MOS tube V3 and the MOS tube V5 are not conductive, and at this time, the power V5P0_OUT is output by the first power input; after the first power input V5P0 is powered off, if the second power input V5P0_CAP has power, at this time, the MOS tube V3 is conductive, the MOS tube V5 is not conductive, and the second power input supplies the power V5P0_OUT; after the first power input V5P0 and the second power input V5P0_CAP are both powered off, at this time, the MOS tube V5 is conductive, and the third power input V5P0_BAT supplies the power V5P0_OUT.

[0037] Specifically, in the embodiment, the control method of the control circuit for the orderly power supply of the power supply is specifically: judging whether the first power input has power, if yes, preferentially supplying power by the first power input; if no, judging whether the second power input has power, if yes, supplying power by the second power input; if no, judging whether the third power input has power, if yes, supplying power by the third power input; if no, powering off the system.

[0038] Specifically, in the embodiment, the utility model takes 5V system power supply, and the system working voltage range is 4.6V-5.2V, and the first power input is the mains power 5V supplied by the mains, which is indicated as V5P0, the second power input is the backup power 5V converted by the super capacitor, which is indicated as V5P0_CAP, and the third power input is the backup power supplied by the nickel hydrogen battery, which is indicated as V5P0_BAT; the discharge sequence is that when the first power input has power, preferentially supplying power by the first power input, after the first power input is powered off, preferentially supplying power by the second power input, and after the first power input and the second power input are both powered off, supplying power by the third power input.

[0039] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the attached drawings, or direct / indirect application in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A control circuit for orderly powering of power supplies, characterized in that, The utility model relates to a power supply circuit, including: a first power input, a second power control circuit, a third power control circuit and an anti-inrush circuit; the first power input is connected with the second power control circuit and a power output terminal respectively, the second power control circuit is connected with the second power input, the third power control circuit and the power output terminal respectively, the third power control circuit is connected with the third power input and the power output terminal respectively, and the anti-inrush circuit is connected with the first power input, the second power control circuit and the third power control circuit respectively; the second power control circuit includes resistance R1, capacitor C1 and MOS tube V3, the resistance R1, capacitor C1 and the gate of MOS tube V3 are connected with the first power input, one end of the resistance R1 and capacitor C1 is grounded, the source of MOS tube V3 is connected with the second power input, and the drain of MOS tube V3 is connected with the power output terminal; the third power control circuit includes diode V2, resistance R2, capacitor C2 and MOS tube V5, the anode of diode V2 is connected with the first power input, the cathode of diode V2 is connected with resistance R2, capacitor C2, the gate of MOS tube V5 and the second power control circuit respectively, one end of the resistance R2 and capacitor C2 is grounded, the source of MOS tube V5 is connected with the third power input, and the drain of MOS tube V5 is connected with the power output terminal.

2. The control circuit for orderly power supply of power supply according to claim 1, characterized in that, The first power input is a mains power supply.

3. A control circuit for orderly powering of power supplies according to any of claims 1-2, characterized in that, The anti-inrush circuit includes a first anti-inrush circuit, the first anti-inrush circuit includes diode V1, the anode of diode V1 is connected with the first power input, and the cathode of diode V1 is connected with the power output terminal.

4. A control circuit for orderly powering of power supplies according to any of claims 1-2, characterized in that, The anti-inrush circuit includes a second anti-inrush circuit, the second anti-inrush circuit includes diode V4, the anode of diode V4 is connected with the drain of MOS tube V3, and the cathode of diode V4 is connected with the power output terminal.

5. A control circuit for orderly powering of power supplies according to any of claims 1-2, characterized in that, The second power input is a backup power supply converted by a super capacitor power supply.

6. A control circuit for orderly powering of power supplies according to any of claims 1-2, characterized in that, The anti-inrush circuit includes a third anti-inrush circuit, the third anti-inrush circuit includes diode V6, the anode of diode V6 is connected with the third power input, and the cathode of diode V6 is connected with the source of MOS tube V5.

7. A control circuit for orderly powering of power supplies according to any of claims 1-2, characterized in that, The third power input is a backup power supply supplied by a nickel-hydrogen battery.

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