CN211670765U - Power supply equipment and power supply circuit thereof - Google Patents
Power supply equipment and power supply circuit thereof Download PDFInfo
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- CN211670765U CN211670765U CN201922419528.3U CN201922419528U CN211670765U CN 211670765 U CN211670765 U CN 211670765U CN 201922419528 U CN201922419528 U CN 201922419528U CN 211670765 U CN211670765 U CN 211670765U
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Abstract
The application belongs to the technical field of electronics and provides power supply equipment and a power supply circuit thereof. In the application, through adopting the power supply circuit including the first switch module, the second switch module, power factor correction module and conversion module, make this power supply circuit work when online mode or high-efficient mode, each module in the circuit is worked in coordination, charge to the load with utilizing the input electricity, and the operating condition of first switch module and second switch module is unchangeable when online mode and high-efficient mode, when this power supply circuit switches to high-efficient mode by online mode, need not to change the operating condition of switch module, it is long when having reduced the switching greatly, thereby the problem that the operating mode that current uninterrupted power exists switches and consumes time has been solved.
Description
Technical Field
The application belongs to the technical field of electronics, especially relates to a power supply unit and power supply circuit thereof.
Background
As a power supply device, an uninterruptible power supply has three operating modes, an online mode, a battery mode, and an efficient mode. At present, for most of low-power online uninterruptible power supplies, when the low-power online uninterruptible power supplies are switched from a high-efficiency mode to an online mode, switching time of about ten milliseconds is required, and the switching time is too long for equipment with high requirements on the switching time, so that the equipment is easily powered off, and normal operation of the equipment cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The application aims to provide power supply equipment and a power supply circuit thereof, and aims to solve the problem that the working mode switching time consumption of the conventional uninterruptible power supply is long.
This application is realized like this, a power supply circuit, including input interface and first output interface, input interface inserts the input electricity, first output interface is connected with the load, its characterized in that, power supply circuit includes: the power factor correction circuit comprises a first switch module, a second switch module, a power factor correction module and a conversion module;
the first switch module is connected with the input interface and the power factor correction module, the power factor correction module is connected with the conversion module and the first output interface, the conversion module is connected with the second switch module, and the second switch module is connected with the first output interface, the input interface and the first switch module;
when the power circuit works in an online mode, the first switch module and the second switch module work in a first working state, the power factor correction module performs power factor correction on the input power, converts the input power after power factor correction into direct current and outputs the direct current to the conversion module, and the conversion module converts the direct current into alternating current and charges a load through the second switch module and the first output interface;
when the power supply circuit works in a high-efficiency mode, the first switch module and the second switch module work in a first working state, and the input power is charged to a load through the first switch module, the power factor correction module, the conversion module and the second switch module.
It is another object of the present application to provide a power supply apparatus including the above power supply circuit.
In the application, through adopting the power supply circuit including the first switch module, the second switch module, power factor correction module and conversion module, make this power supply circuit work when online mode or high-efficient mode, each module in the circuit is worked in coordination, charge to the load with utilizing the input electricity, and the operating condition of first switch module and second switch module is unchangeable when online mode and high-efficient mode, when this power supply circuit switches to high-efficient mode by online mode, need not to change the operating condition of switch module, it is long when having reduced the switching greatly, thereby the problem that the operating mode that current uninterrupted power exists switches and consumes time has been solved.
Drawings
Fig. 1 is a schematic block diagram of a power circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic block diagram of a power circuit according to another embodiment of the present disclosure;
fig. 3 is a schematic block diagram of a power circuit according to another embodiment of the present application;
fig. 4 is a schematic circuit diagram of a power circuit according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a current path of a power circuit operating in a high efficiency mode according to an embodiment of the present application;
fig. 6 is a schematic diagram of another current path of a power circuit operating in a high-efficiency mode according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Implementations of the present application are described in detail below with reference to the following detailed drawings:
fig. 1 shows a block structure of a power supply circuit provided in an embodiment of the present application, and for convenience of description, only the parts related to the embodiment are shown, which are detailed as follows:
as shown in fig. 1, the power supply circuit provided in the embodiment of the present application includes an input interface 10, a first output interface 11, a first switch module 12, a second switch module 13, a power factor correction module 14, and a conversion module 15.
The input interface 10 is connected to input power, where the input power includes but is not limited to a commercial power, the first output interface 11 is connected to a load 20, and the load 20 may be an ac load or a dc load, and is not limited herein; the first switch module 12 is connected to the input interface 10 and the power factor correction module 14, the power factor correction module 14 is connected to the conversion module 15 and the first output interface 11, the conversion module 15 is connected to the second switch module 13, and the second switch module 13 is connected to the first output interface 11, the input interface 10 and the first switch module 12.
Specifically, when the power circuit operates in the online mode, the first switch module 12 and the second switch module 13 both operate in the first operating state, the power factor correction module 14 performs power factor correction on the input power, converts the input power after power factor correction into direct current, and outputs the direct current to the conversion module 15, and the conversion module 15 converts the direct current into alternating current and then charges the load 20 through the second switch module 13 and the first output interface 11.
Further, when the power circuit operates in the high-efficiency mode, the first switch module 12 and the second switch module 13 both operate in the first operating state, and the input power is charged to the load 20 through the first switch module 12, the power factor correction module 14, the conversion module 15, and the second switch module 13.
In specific implementation, the online mode refers to an operation mode of converting input alternating current into direct current and then converting the direct current into alternating current, that is, the online mode refers to an AC-DC-AC operation mode, and the efficient mode refers to an operation mode of directly supplying the input alternating current to a load in an alternating current manner, that is, the efficient mode refers to an AC-AC operation mode.
In this embodiment, by using the power supply circuit including the first switch module 12, the second switch module 13, the power factor correction module 14, and the conversion module 15, when the power supply circuit operates in the online mode or the high efficiency mode, the modules in the circuit cooperate to charge the load by using the input power, and the operating states of the first switch module 12 and the second switch module 13 are unchanged in the online mode and the high efficiency mode, that is, when the power supply circuit is switched from the online mode to the high efficiency mode, the operating state of the switch module does not need to be changed, which greatly reduces the switching duration, thereby solving the problem of long time consumption for switching the operating modes of the conventional uninterruptible power supply.
Further, as an embodiment of the present application, as shown in fig. 2, the power circuit further includes a battery module 16, a third switch module 17, and a second output interface 18.
The battery module 16 is connected to the first switch module 12 and the third switch module 17, the third switch module 17 is connected to the power factor correction module 14, and the second output interface 18 is connected to the third switch module 17, the power factor correction module 14, and the conversion module 15.
Specifically, when the power supply circuit operates in the battery mode, the first switch module 12 operates in the second operating state, the second switch module 13 and the third switch module 17 operate in the first operating state, and the power factor correction module 14 boosts the battery voltage of the battery module 16, converts the boosted battery voltage into an ac voltage, and charges the ac voltage to the load 20 through the second output interface 18.
In specific implementation, the battery mode refers to a mode in which direct current of a battery is subjected to direct current boosting to obtain boosted direct current, and the boosted direct current is converted into alternating current to charge a load, that is, the battery mode refers to a DC-AC operation mode.
In this embodiment, the battery module 16, the third switch module 17 and the second output interface 18 are added to the power circuit, so that the power circuit can operate in a battery mode, and the operating mode of the power circuit is expanded, so that the power circuit can adapt to various operating conditions.
Further, as an embodiment of the present application, as shown in fig. 3, the power factor correction module 14 includes: a current detection unit 140 and a power factor correction unit 141.
The current detection unit 140 is connected to the first switch module 12 and the power factor correction unit 141, and the power factor correction unit 141 is connected to the third switch module 17, the conversion module 15, the first output interface module 11, and the second output interface 18.
Specifically, when the power circuit operates in the online mode, the current detection unit 140 detects the current of the input power, and the power factor correction unit 141 performs power factor correction on the input power, and converts the input power after power factor correction into a direct current to output to the direct current conversion module 15;
when the power supply circuit operates in the battery mode, the power factor correction unit 141 performs a boosting process on the battery voltage of the battery module 1 and converts the boosted battery voltage into an alternating-current voltage.
In the present embodiment, the number of components in the power supply circuit is reduced by multiplexing the power factor correction unit 141 in the battery mode and the online mode, so that the circuit structure of the power supply circuit is simpler, and the cost of the power supply circuit is reduced.
Further, as an embodiment of the present application, as shown in fig. 4, the current detecting unit 140 includes a hall current detector HCT1, an input terminal of the hall current detector HCT1 is connected to the first switching module 12, and an output terminal of the hall current detector HCT1 is connected to the power factor correction unit 141.
During specific implementation, the hall current detector HCT1 is used for detecting the current of the input power accessed by the input interface 10, so that the power factor correction unit 141 can perform power factor correction on the voltage phase and the current phase of the input power according to the detected current, the voltage phase and the current phase of the input power are matched, and the normal and efficient work of the power circuit is effectively ensured.
In addition, the hall current detector HCT1 may be implemented by using an existing hall current sensor or a collector, which is not specifically limited herein, and the working mode of the hall current detector HCT1 may refer to the prior art, which is not described herein again.
Further, as an embodiment of the present application, as shown in fig. 4, the power factor correction unit 141 includes a first inductor L1, a first switching element Q1, a second switching element Q2, a fourth switching element Q4, a sixth switching element Q6, an eighth switching element Q8, a first diode D1, a second diode D2, a first capacitor C1, and a second capacitor C2.
A first end of a first inductor L1 is connected to the current detection unit 140, a second end of a first inductor L1 is connected to a first end of a first switching element Q1, an anode of a first diode D1, and a second end of a sixth switching element Q6, a cathode of a first diode D1 is connected to a second end of a fourth switching element Q4, a second end of a first switching element Q1 is connected to a first end of a second switching element Q2 and the second output interface 18, a second end of a second switching element Q2 is connected to an anode of a first capacitor C1, a cathode of a first capacitor C1 is connected to an anode of a second capacitor C2, a first end of a fourth switching element Q4, and a second end of an eighth switching element Q8, and is connected to the conversion module 15, a cathode of a second capacitor C2 is connected to an anode of a second diode D2, and to the second output interface 18, and a cathode of a second diode D35 2 is connected to a cathode of an eighth switching element Q8, A first terminal of the sixth switching element Q6 is connected to the third switching module 17.
In specific implementation, the first switching element Q1, the second switching element Q2, the fourth switching element Q4, the sixth switching element Q6, and the eighth switching element Q8 may be implemented by NMOS transistors or PMOS transistors, which is not limited herein.
Specifically, when the first switching element Q1, the second switching element Q2, the fourth switching element Q4, the sixth switching element Q6 and the eighth switching element Q8 are implemented by NMOS transistors, the first terminal of the first switching element Q1, the first terminal of the second switching element Q2, the first terminal of the fourth switching element Q4, the first terminal of the sixth switching element Q6 and the first terminal of the eighth switching element Q8 refer to the source of the NMOS transistor, the second terminal of the first switching element Q1, the second terminal of the second switching element Q2, the second terminal of the fourth switching element Q4, the second terminal of the sixth switching element Q6 and the second terminal of the eighth switching element Q8 refer to the drain of the NMOS transistor, and the control terminal of the first switching element Q1, the control terminal of the second switching element Q6, the control terminal of the fourth switching element Q4, the control terminal of the sixth switching element Q8 refer to the gate 6 of the NMOS transistor 6, and the gate of the NMOS transistor is connected to an external controller or processor (not shown in the figure).
Further, when the first switching element Q1, the second switching element Q2, the fourth switching element Q4, the sixth switching element Q6 and the eighth switching element Q8 are implemented by PMOS transistors, the first terminal of the first switching element Q1, the first terminal of the second switching element Q2, the first terminal of the fourth switching element Q4, the first terminal of the sixth switching element Q6 and the first terminal of the eighth switching element Q8 refer to drains of the PMOS transistors, the second terminal of the first switching element Q1, the second terminal of the second switching element Q2, the second terminal of the fourth switching element Q4, the second terminal of the sixth switching element Q6 and the second terminal of the eighth switching element Q8 refer to sources of the PMOS transistors, and the control terminal of the first switching element Q8, the control terminal of the second switching element Q2, the second terminal of the fourth switching element Q6342, the second terminal of the eighth switching element Q8 refer to gates 6 of the PMOS transistors, and the gate of the PMOS transistor is connected to an external controller or processor (not shown in the figure).
Further, as an embodiment of the present application, as shown in fig. 4, the first switch module 12 includes a first relay RY1, the first contact 5 of the first relay RY1 is connected to the input interface 10, the second contact 3 of the first relay RY1 is connected to the battery module 16, and the movable contact 4 of the first relay RY1 is connected to the current detection unit 140.
Specifically, the first contact 5 of the first relay RY1 is the first moving end 5 of the first relay RY1, the second contact 3 of the first relay RY1 is the second moving end 3 of the first relay RY1, and the moving contact 4 of the first relay RY1 is the stationary end 4 of the first relay RY 1. In addition, when the first relay RY1 operates in the first operating state, it means that the first moving end 5 of the first relay RY1 is connected with the fixed end 4, and when the first relay RY1 operates in the second operating state, it means that the second moving end 3 of the first relay RY1 is connected with the fixed end 4.
Further, as an embodiment of the present application, as shown in fig. 4, the second switch module 13 includes a second relay RY2, the second contact 3 of the second relay RY2 is connected to the input interface 10 and the first switch module 12, the first contact 5 of the second relay RY2 is connected to the conversion module 15, and the movable contact 4 of the second relay RY2 is connected to the first output interface 11.
Specifically, the first contact 5 of the second relay RY2 is the first moving end 5 of the second relay RY2, the second contact 3 of the second relay RY2 is the second moving end 3 of the second relay RY2, and the moving contact 4 of the second relay RY2 is the stationary end 4 of the second relay RY 2. In addition, when the second relay RY2 operates in the first operating state, it means that the first moving end 5 of the second relay RY2 is connected with the fixed end 4, and when the second relay RY2 operates in the second operating state, it means that the second moving end 3 of the second relay RY2 is connected with the fixed end 4.
Further, as an embodiment of the present application, as shown in fig. 4, the third switching module 17 includes a third relay RY3, the movable contact 4 of the third relay RY3 is connected with the battery module 16, the second contact 3 of the third relay RY3 is connected with the power factor correction module 14, and the first contact 5 of the third relay RY3 is air-connected.
Specifically, the first contact 5 of the third relay RY3 is the first moving end 5 of the third relay RY3, the second contact 3 of the third relay RY3 is the second moving end 3 of the third relay RY3, and the moving contact 4 of the third relay RY3 is the stationary end 4 of the third relay RY 3. In addition, when the third relay RY3 operates in the first operating state, it means that the first moving end 5 of the third relay RY3 is connected with the fixed end 4, and when the third relay RY3 operates in the second operating state, it means that the second moving end 3 of the third relay RY3 is connected with the fixed end 4.
Further, as an embodiment of the present application, as shown in fig. 3, the power circuit further includes a filtering module 19, where the filtering module 19 is connected to the input interface 10, the first switch module 12, the second switch module 13, the power factor correction module 14, and the first output interface 11;
when the input interface 10 accesses the input power, the filtering module 19 performs filtering processing on the input power.
In this embodiment, the filtering module 19 is disposed in the power circuit, so that the filtering module 19 performs filtering processing on the input power, thereby preventing a clutter signal in the input power from affecting the input power, and ensuring the reliability of the power circuit; it should be noted that, in this embodiment, the filtering module 19 may be implemented by using an existing filtering circuit, for example, the filtering circuit 19 shown in fig. 3, and the working principle of the filtering circuit may refer to the prior art, which is not described herein again.
Further, as an embodiment of the present application, as shown in fig. 4, the conversion module 15 includes a third switching element Q3, a fifth switching element Q5, a seventh switching element Q7, and a ninth switching element Q9. Specifically, the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7 and the ninth switching element Q9 form a T-type switching structure. A second end of the third switching element Q3 is connected to a second end of the first switching element Q1, a first end of the third switching element Q3 is connected to a second end of the seventh switching element Q7 and a second end of the ninth switching element Q9, a first end of the seventh switching element Q7 is connected to a first end of the fifth switching element Q5, a second end of the fifth switching element Q5 is connected to a negative electrode of the capacitor C1 and a positive electrode of the capacitor C2, and a first end of the ninth switching element Q9 is connected to the second output interface 18.
In a specific implementation, the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 may be implemented by NMOS transistors or PMOS transistors, and are not limited herein.
Specifically, when the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 are implemented using NMOS transistors, the first terminal of the third switching element Q3, the first terminal of the fifth switching element Q5, the first terminal of the seventh switching element Q7, and the first terminal of the ninth switching element Q9 refer to the source of the NMOS transistor, and the second terminal of the third switching element Q3, the second terminal of the fifth switching element Q5, the second terminal of the seventh switching element Q7, and the second terminal of the ninth switching element Q9 refer to the drain of the NMOS transistor, and the control terminal of the third switching element Q3, the control terminal of the fifth switching element Q5, the control terminal of the seventh switching element Q7, and the control terminal of the ninth switching element Q9 refer to the gate of the NMOS transistor, and the gate of the NMOS transistor is connected to an external controller or processor (not shown in the figure).
Further, when the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 are implemented using PMOS transistors, the first terminal of the third switching element Q3, the first terminal of the fifth switching element Q5, the first terminal of the seventh switching element Q7, and the first terminal of the ninth switching element Q9 refer to the drain of the PMOS transistor, and the second terminal of the third switching element Q3, the second terminal of the fifth switching element Q5, the second terminal of the seventh switching element Q7, and the second terminal of the ninth switching element Q9 refer to sources of the PMOS transistors, and the control terminal of the third switching element Q3, the control terminal of the fifth switching element Q5, the control terminal of the seventh switching element Q7, and the control terminal of the ninth switching element Q9 refer to the gate of the PMOS transistor, and the gate of the PMOS transistor is connected to an external controller or processor (not shown in the figure).
Further, as an implementation manner of the present application, the power supply circuit provided in the embodiment of the present application further includes a hall current detector HCT2, where the hall current detector HCT2 is configured to detect a current output by the power supply circuit, so as to ensure reliable output of the power supply circuit.
The operation principle of the power supply circuit provided by the present application is specifically described below by taking the circuit shown in fig. 4 as an example, and the following details are described below:
as shown in fig. 4, when the power supply circuit operates in the online mode, the movable contact 4 of the first relay RY1 and the first contact 5 are connected, and the movable contact 4 of the second relay RY2 and the first contact 5 are connected, at which time the first switching element Q1 is open, the second switching element Q2 is conductive, and at the same time the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 are conductive.
Specifically, when the input power, for example, the commercial power, is output in a positive half cycle, the sixth switching element Q6 operates in a high-frequency switching mode (for example, 19.2KHz), the eighth switching element Q8 is always turned on, so that the input power is power factor corrected through the cooperation of the sixth switching element Q6 and the eighth switching element Q8, and the input power after power factor correction is converted into direct current to be input to the conversion circuit, so that the direct current-alternating current conversion circuit composed of the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 converts the direct current into alternating current and outputs the alternating current through the second relay RY2 to charge the load through the output interface; when the input power, for example, the commercial power, is output in a negative half cycle, the eighth switching element Q8 operates in a high frequency switching mode (for example, 19.2KHz), the sixth switching element Q6 is always turned on, so that the input power is power factor corrected by the cooperation of the sixth switching element Q6 and the eighth switching element Q8, and the input power after power factor correction is converted into direct current to be input to the conversion circuit, so that the direct current-alternating current conversion circuit composed of the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 converts the direct current into alternating current, and then the alternating current is output to the load through the second RY relay 2, and then the load is charged through the output interface.
When the power supply circuit operates in the high-efficiency mode, the movable contact 4 of the same first relay RY1 is connected to the first contact 5, the movable contact 4 of the second relay RY2 is connected to the first contact 5, the first switching element Q1 and the third switching element Q3 are on, and the other switching elements are off.
Specifically, when the input power, for example, the commercial power, is output in the positive half cycle, the input power, for example, the commercial power, which is input through the input interface 10 is charged to the load through the filter circuit, the first relay RY1, the hall current detector HCT1, the first switching element Q1, the third switching element Q3, the hall current detector HCT2, the second relay RY2, and the output interface, and a specific current path may refer to fig. 5; when the input power, such as the commercial power, is output in the negative half cycle, the input power, such as the commercial power, input into the input interface 10 passes through the output interface, the second relay RY2, the hall current detector HCT2, the third switching element Q3, the first switching element Q1, the hall current detector HCT1, the first relay RY1, the filter circuit, and the input interface 10, and a specific current path may refer to fig. 6.
In the embodiment, when the power circuit works in the high-efficiency mode and the online mode, the working modes of the first relay RY1 and the second relay RY2 are not changed, that is, the first relay RY1 and the second relay RY2 do not switch the switch modes, so that the time length of the online mode and the high-efficiency mode is greatly shortened, and the problem that the time length is consumed in the working mode switching of the conventional uninterruptible power supply is solved.
Further, when the power supply circuit operates in the battery mode, the second contact 3 and the movable contact 4 of the first relay RY1 are connected, the first contact 5 and the movable contact 4 of the second relay RY2 are connected, and likewise, the second contact 53 and the movable contact 4 of the third relay RY3 are connected, at which time the first switching element Q1 is opened, the second switching element Q2 is turned on, and at the same time the third switching element Q3, the fifth switching element Q5, the seventh switching element Q7, and the ninth switching element Q9 are opened.
Specifically, when the output is in the positive half cycle, the sixth switching element Q6 operates in a high frequency switching mode (for example, 19.2KHz), the eighth switching element Q8 is always turned on, the fourth switching element Q4 is always turned off, and further, the battery voltage of the battery module is boosted through a circuit formed by the sixth switching element Q6 and the eighth switching element Q8, and the boosted battery voltage is converted into an alternating-current voltage and then charged to the load through the second output interface; when the output is in the negative half cycle, the sixth switching element Q6 operates in a high frequency switching mode (for example, 19.2KHz), the eighth switching element Q8 is turned off all the time, the fourth switching element Q4 is turned on all the time, and further, the battery voltage of the battery module is boosted through a circuit formed by the fourth switching element Q4 and the sixth switching element Q6, and the boosted battery voltage is converted into an alternating voltage and then charged to the load through the second output interface.
Further, the present application also provides a power supply apparatus including a power supply circuit. It should be noted that, since the power circuit in the power supply device provided in the embodiment of the present application is the same as the power circuit shown in fig. 1 to 5, reference may be made to the foregoing detailed description about fig. 1 to 6 for a specific operating principle of the power circuit in the power supply device provided in the embodiment of the present application, and details are not repeated here.
In the application, through adopting the power supply circuit including the first switch module, the second switch module, power factor correction module and conversion module, make this power supply circuit work when online mode or high-efficient mode, each module in the circuit is worked in coordination, charge to the load with utilizing the input electricity, and the operating condition of first switch module and second switch module is unchangeable when online mode and high-efficient mode, when this power supply circuit switches to high-efficient mode by online mode, need not to change the operating condition of switch module, it is long when having reduced the switching greatly, thereby the problem that the operating mode that current uninterrupted power exists switches and consumes time has been solved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A power supply circuit, includes input interface and first output interface, the input interface inserts the input electricity, first output interface is connected with the load, its characterized in that, power supply circuit includes: the power factor correction circuit comprises a first switch module, a second switch module, a power factor correction module and a conversion module;
the first switch module is connected with the input interface and the power factor correction module, the power factor correction module is connected with the conversion module and the first output interface, the conversion module is connected with the second switch module, and the second switch module is connected with the first output interface, the input interface and the first switch module;
when the power circuit works in an online mode, the first switch module and the second switch module work in a first working state, the power factor correction module performs power factor correction on the input power, converts the input power after power factor correction into direct current and outputs the direct current to the conversion module, and the conversion module converts the direct current into alternating current and charges a load through the second switch module and the first output interface;
when the power supply circuit works in a high-efficiency mode, the first switch module and the second switch module work in a first working state, and the input power is charged to a load through the first switch module, the power factor correction module, the conversion module and the second switch module.
2. The power supply circuit according to claim 1, further comprising: the battery module, the third switch module and the second output interface;
the battery module is connected with the first switch module and the third switch module, the third switch module is connected with the power factor correction module, and the second output interface is connected with the third switch module, the power factor correction module and the conversion module;
when the power supply circuit works in a battery mode, the first switch module works in a second working state, the second switch module and the third switch module work in a first working state, the power factor correction module performs boosting processing on battery voltage of the battery module, converts the boosted battery voltage into alternating voltage and then charges a load through the second output interface.
3. The power supply circuit of claim 2, wherein the power factor correction module comprises: a current detection unit and a power factor correction unit;
the current detection unit is connected with the first switch module and the power factor correction unit, and the power factor correction unit is connected with the third switch module, the conversion module, the first output interface module and the second output interface;
when the power supply circuit works in an online mode, the current detection unit detects the current of the input electricity, the power factor correction unit performs power factor correction on the input electricity, and the input electricity after the power factor correction is converted into direct current to be output to the conversion module;
when the power supply circuit works in a battery mode, the power factor correction unit boosts the battery voltage of the battery module and converts the boosted battery voltage into alternating-current voltage.
4. The power supply circuit according to claim 3, wherein the current detection unit comprises a Hall current detector, an input end of the Hall current detector is connected with the first switch module, and an output end of the Hall current detector is connected with the power factor correction unit.
5. The power supply circuit according to claim 3, wherein the power factor correction unit includes a first inductor, a first switching element, a second switching element, a fourth switching element, a sixth switching element, an eighth switching element, a first diode, a second diode, a first capacitor, and a second capacitor;
a first end of the first inductor is connected to the current detection unit, a second end of the first inductor is connected to a first end of the first switching element, an anode of the first diode, and a second end of the sixth switching element, the cathode of the first diode is connected with the second end of the fourth switching element, the second end of the first switching element is connected with the anode of the first capacitor and the second output interface, a negative electrode of the first capacitor is connected with a positive electrode of the second capacitor, a first end of the fourth switching element and a second end of the eighth switching element, and is connected with the conversion module, the negative electrode of the second capacitor is connected with the anode of the second diode in common, and is connected to the second output interface, and a cathode of the second diode is connected to the first terminal of the eighth switching element, the first terminal of the sixth switching element, and the third switching module.
6. The power supply circuit according to claim 3, wherein the first switch module includes a first relay, a first contact of the first relay is connected to the input interface, a second contact of the first relay is connected to the battery module, and a movable contact of the first relay is connected to the current detection unit.
7. A power supply circuit according to claim 1 or 2, characterized in that the second switching module comprises a second relay, the second contact of which is connected to the input interface and to the first switching module, the first contact of which is connected to the conversion module, and the movable contact of which is connected to the first output interface.
8. The power supply circuit of claim 3, wherein the third switch module comprises a third relay, a movable contact of the third relay is connected with the battery module, a second contact of the third relay is connected with the power factor correction module, and a first contact of the third relay is in a null connection.
9. The power supply circuit of claim 1, further comprising a filtering module connected to the input interface, the first switching module, the second switching module, the power factor correction module, and the first output interface;
when the input interface is connected with input electricity, the filtering module carries out filtering processing on the input electricity.
10. A power supply device characterized in that it comprises a power supply circuit as claimed in any one of claims 1 to 9.
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| CN201922419528.3U CN211670765U (en) | 2019-12-25 | 2019-12-25 | Power supply equipment and power supply circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023078432A1 (en) * | 2021-11-05 | 2023-05-11 | 锐捷网络股份有限公司 | Power supply apparatus and power supply control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023078432A1 (en) * | 2021-11-05 | 2023-05-11 | 锐捷网络股份有限公司 | Power supply apparatus and power supply control method |
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