CN217388530U - Double-input power supply circuit and device thereof - Google Patents
Double-input power supply circuit and device thereof Download PDFInfo
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- CN217388530U CN217388530U CN202220510471.7U CN202220510471U CN217388530U CN 217388530 U CN217388530 U CN 217388530U CN 202220510471 U CN202220510471 U CN 202220510471U CN 217388530 U CN217388530 U CN 217388530U
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Abstract
The embodiment of the utility model discloses dual-input power supply circuit and device thereof, the circuit includes AC input end, AC output end, detection circuitry, controller, first converting circuit, first switch circuit, second converting circuit, second switch circuit, DC input end and DC output end, wherein the alternating current is input by the AC input end, flows through first converting circuit and exports DC current at the DC output end, and/or exports AC current at the AC output end; the direct current is input from the DC input end, and the direct current flows through the second conversion circuit to output AC current at the AC output end and/or output DC current at the DC output end. The power supply system can realize that the AC/DC power supply and the DC/DC power supply can be effectively supplied under the condition that only the direct current source supplies power, only the alternating current source supplies power or both the direct current source and the alternating current source supply power, thereby expanding the application range and improving the use efficiency.
Description
Technical Field
The embodiment of the utility model provides a relate to electron technical field, especially relate to a dual input power supply circuit and device thereof.
Background
The input end of the existing power input device is only connected with a single power supply, and usually an AC socket is arranged to connect external AC power to supply power to an AC/DC power supply (i.e. the power supply is provided with a module for converting AC power into DC power, and the input AC power is converted into DC power for storage), or DC power is arranged to supply power to the DC/DC power supply (i.e. the input DC power and the storage DC power).
The existing power supplies mostly use direct current, when an input source is alternating current, the DC/DC power supply cannot be used, and a user needs to purchase a proper alternating current-to-direct current converter; when the input source is direct current, the AC/DC power supply cannot be used, and a user needs to purchase a proper direct current-to-alternating current converter. This brings restrictions on application scenarios to users, and also increases costs significantly.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a main technical problem who solves provides a dual input power supply circuit and device thereof, can realize only having direct current source power supply, only having alternating current source power supply or having direct current source and alternating current source power supply's the condition under simultaneously, the homoenergetic carries out effective power supply for AC/DC power and DC/DC power simultaneously, has enlarged the range of application and has improved the availability factor.
In order to solve the technical problem, the utility model discloses a technical scheme be: a dual-input power supply circuit is provided, which is characterized by comprising: the detection circuit comprises an AC input end, an AC output end, a detection circuit, a controller, a first conversion circuit, a first switch circuit, a second conversion circuit, a second switch circuit, a DC input end and a DC output end, wherein the AC input end is directly connected to the AC output end, and the DC input end is directly connected to the DC output end; the detection circuit is connected to the AC input end and the DC input end, and is used for detecting the power supply condition change of the AC input end and the DC input end and outputting corresponding detection signals to the controller; the controller is respectively connected with the AC input end, the DC input end, the signal output end of the detection circuit, the control end of the first switch circuit and the control end of the second switch circuit; the controller is configured to: controlling the first switch circuit and the second switch circuit to switch between a conducting state and a disconnecting state according to the currently selected power supply mode; an input terminal of the first conversion circuit is connected to a first connection node between the AC input terminal and the AC output terminal; the first switching circuit is connected to a second connection node between the DC input terminal and the DC output terminal through the first switching circuit; an input terminal of the second conversion circuit is connected to a fourth connection node between the DC input terminal and the DC output terminal; the second conversion circuit is connected to a third connection node between the AC input terminal and the AC output terminal through the second switch circuit.
In an embodiment of the present application, the dual-input power supply circuit further includes a first protection circuit and a second protection circuit, the first protection circuit being connected between the AC input terminal and the first connection node, the first protection circuit being configured to prevent a current from flowing in reverse into the AC input terminal; the second protection circuit is connected between the DC input terminal and the second connection node, and the second protection circuit is configured to prevent a reverse current from flowing into the DC input terminal.
In an embodiment of the present application, the first protection circuit is constituted by a relay, one end of the relay is connected to the first connection node, and the other end of the relay is connected to the AC input terminal; the second protection circuit is constituted by a diode, a cathode of the diode is connected to the second connection node, and an anode of the diode is connected to the DC input terminal.
In an embodiment of the present application, the power supply modes include an AC source priority power supply mode, a DC source priority power supply mode, and a common power supply mode.
In an embodiment of the application, when the detection circuit detects that the dual-input power supply circuit is in a common power supply mode, the detection circuit outputs a turn-off signal to the controller, and the controller controls the first switch circuit and the second switch circuit to be turned off.
In an embodiment of the application, when the detection circuit detects that the dual-input power supply circuit is in an AC source priority power supply mode, the detection circuit sequentially outputs a turn-on signal and a turn-off signal to the controller, and the controller controls the first switch circuit to be turned on and controls the second switch circuit to be turned off; when the detection circuit detects that the dual-input power supply circuit is in a DC source priority power supply mode, the detection circuit sequentially outputs a disconnection signal and a connection signal to the controller, and the controller controls the first switch circuit to be disconnected and controls the second switch circuit to be connected.
In an embodiment of the present application, the first conversion circuit includes a rectification circuit and a voltage-reducing circuit, an input end of the rectification circuit is connected to the first node, an output end of the rectification circuit is connected to an input end of the voltage-reducing circuit, an output end of the voltage-reducing circuit is connected to the first switch circuit, and the rectification circuit is configured to convert an alternating current input from the AC input end into a direct current.
In an embodiment of the present application, the second conversion circuit includes an inverter circuit and a boost circuit, an input end of the boost circuit is connected to the fourth node, an output end of the boost circuit is connected to an input end of the inverter circuit, an output end of the inverter circuit is connected to the second switch circuit, and the inverter circuit is configured to convert a direct current input from the DC input end and passing through the boost circuit into an alternating current.
In an embodiment of the present application, the voltage reduction circuit is formed by an adjustable resistor.
For solving the technical problem, the utility model discloses a another technical scheme is: the dual-input power supply device comprises the dual-input power supply circuit and a shell; the dual-input power circuit is accommodated in the casing, the casing comprises at least four external ports, and the external ports are electrically connected with the AC input end, the DC input end, the AC output end and the DC output end of the dual-input power circuit respectively.
The embodiment of the utility model provides a beneficial effect is: be different from prior art's condition, the embodiment of the utility model provides a can realize only direct current source power supply, only exchange the source power supply or have direct current source and exchange the source power supply simultaneously under the condition, the homoenergetic carries out effective power supply for AC/DC power and DC/DC power simultaneously, has enlarged the range of application and has improved the availability factor.
Drawings
Fig. 1 is a circuit structure diagram of a dual-input power circuit according to an embodiment of the present invention;
fig. 2 is a circuit structure diagram of another dual-input power circuit according to an embodiment of the present invention;
fig. 3 is a circuit structure diagram of a voltage reduction circuit according to an embodiment of the present invention;
fig. 4 is a circuit structure diagram of a second protection circuit according to an embodiment of the present invention.
The following is a description of the drawings:
100: an AC input terminal; 200: an AC output terminal; 300: a detection circuit; 400: a controller; 500: a first conversion circuit; 600: a first switching circuit; 700: a second conversion circuit; 800: a second switching circuit; 900: a DC input; 1000: a DC input;
510: a rectifying circuit; 520: a voltage reduction circuit; 710: a boost circuit; 720: an inverter circuit; 1110: a first protection circuit; 1120: a second protection circuit.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a circuit structure diagram of a dual-input power circuit according to an embodiment of the present invention, where the circuit includes an AC input terminal 100, an AC output terminal 200, a detection circuit 300, a controller 400, a first conversion circuit 500, a first switch circuit 600, a second conversion circuit 700, a second switch circuit 800, a DC input terminal 900, and a DC input terminal 1000.
In one embodiment of the present invention, the AC input 100 is connected to the AC output 200, the detection circuit 300, the controller 400, the first converting circuit 500 and the second switching circuit 800, respectively, wherein the AC input 100 is used for connecting an external AC source and outputting an alternating current to the first converting circuit 500, and the AC output 200 is used for connecting a power source to be AC supplied.
In an embodiment of the present invention, the detection circuit 300 is connected to the AC input terminal 100, the controller 400 and the DC input terminal 900, respectively, wherein the detection circuit is configured to detect power supply conditions of the AC input terminal 100 and the DC input terminal 900, and according to whether the AC input terminal 100 and the DC input terminal 900 are powered by three power supply conditions, the three power supply conditions are: only AC power supply, only DC power supply, and both AC and DC power supply, it should be noted that, after detecting the power supply conditions of the AC input terminal 100 and the DC input terminal 900, the detection circuit 300 outputs a corresponding detection signal according to different power supply conditions, and outputs the detection signal to the controller 400.
In an embodiment of the present invention, the controller 400 is connected to the AC input terminal 100, the detection circuit 300, the first switch circuit 600, the second switch circuit 800 and the DC input terminal 900, respectively, and the controller 400 switches the power supply mode according to the detection signal output by the detection circuit 300 when receiving the detection signal. It should be noted that, as can be seen from the above, there are three power supply situations, so the detection circuit 300 outputs three detection signals to the controller 400 according to three power supply situations, namely, AC source power supply only, DC source power supply only, and AC source and DC source power supply jointly. Therefore, there are three power supply modes, which are an AC source priority power supply mode, a DC source priority power supply mode, and a common power supply mode.
In a specific implementation, the detection circuit 300 is configured to detect power supply modes input to the AC input terminal 100 and the DC input terminal 900, when the controller 400 selects a current AC source priority power supply mode, if the AC source is powered off, the detection circuit 300 may detect that only the DC source is currently powered on, and output a corresponding detection signal to the controller 400, and the controller 400 automatically switches to the DC source priority power supply mode according to the received detection signal; when the controller 400 selects the current DC source priority power supply mode, if the DC source is powered off, the detection circuit 300 detects that the current power supply is only the AC source, and outputs a corresponding detection signal to the controller 400, and the controller 400 automatically switches to the AC source priority power supply mode according to the received detection signal; when the AC input terminal 100 and the DC input terminal 900 are connected to an AC source and a DC source, respectively, the detection circuit 300 detects that the AC source and the DC source are currently supplied with power together, and outputs a corresponding detection signal to the controller 400, and the controller 400 automatically switches to the common power supply mode according to the received detection signal.
It should be noted that, the controller 400 also controls the on and off of the first switch circuit 600 and the second switch circuit 800 according to the current power supply mode, specifically:
when the current power supply mode is selected as the AC source priority power supply mode, the controller 400 controls the first switch circuit 400 to be turned on and controls the second switch circuit 800 to be turned off;
when the current power supply mode is selected as the DC source priority power supply mode, the controller 400 controls the first switch circuit 400 to be turned off, and controls the second switch circuit 800 to be turned on;
when the current power supply mode is selected as the common power supply mode, the controller 400 controls the first switch circuit 400 to be turned off and controls the second switch circuit 800 to be turned off.
In one embodiment of the present invention, the first switching circuit 500 is connected to the AC input terminal 100, the AC output terminal 200 and the first switching circuit 500, respectively. The first conversion circuit 500 is used to convert the input ac power into DC power that can be used to supply the power to be DC. Specifically, when the first switch circuit 600 is turned on in the current AC source priority power supply mode, the first conversion circuit 500 receives the AC power input from the AC input terminal 100, converts the input AC power into a DC power that can be used to supply the power to be DC power, and outputs the DC power to the DC output terminal through the first switch circuit 600.
In one embodiment of the present invention, the second switching circuit 700 is connected to the DC input terminal 900, the DC output terminal 1000 and the second switching circuit 800, respectively. The second conversion circuit 700 is used to convert the input direct current into alternating current that can be used to supply the power to be AC-supplied. Specifically, when the second switch circuit 800 is turned on in the current DC source priority power supply mode, the second conversion circuit 700 receives the DC power input from the DC input terminal 900, converts the input DC power into AC power that can be used for supplying the AC power supply, and outputs the AC power to the AC output terminal through the second switch circuit 800.
The two cases described above illustrate the control behavior of the controller 400 for the first switching circuit 600 and the second switching circuit 800 when in the AC source priority power supply mode and the DC source priority power supply mode, respectively. When the whole circuit is in the common power supply mode, the controller 400 controls the first switch circuit 400 and the second switch circuit 800 to be turned off, so that the AC power input from the AC input terminal 100 is directly output from the AC output terminal 200, and the DC power input from the DC input terminal 900 is directly output from the DC output terminal 1000.
In this way, the embodiment of the utility model provides a dual input power supply circuit can realize only having the direct current source power supply, only having the alternating current source power supply or having the direct current source simultaneously and alternating current source power supply under the condition, the homoenergetic carries out effective power supply for AC/DC power and DC/DC power simultaneously, has enlarged the range of application and has improved the availability factor.
Referring to fig. 2, fig. 2 is a circuit structure diagram of another dual-input power circuit according to an embodiment of the present invention, where the circuit includes an AC input terminal 100, an AC output terminal 200, a detection circuit 300, a controller 400, a rectification circuit 510, a voltage reduction circuit 520, a first switch circuit 600, a voltage boost circuit 710, an inverter circuit 720, a second switch circuit 800, a DC input terminal 900, a DC input terminal 1000, a first protection circuit 1110, and a second protection circuit 1120.
In one embodiment of the present invention, the AC input 100 is connected to the first protection circuit 1110, the detection circuit 300 and the controller 400, respectively, wherein the AC input 100 is used for connecting an external AC source and outputting an alternating current to the first protection circuit 1110, and the AC output 200 is used for connecting a power source to be AC supplied.
In one embodiment of the present invention, the first protection circuit 1110 is connected to the rectifying circuit 510, the AC output terminal 200 and the second switch circuit 800, respectively, wherein the first protection circuit 1110 directly outputs the AC input terminal 100 to the AC output terminal 200 after receiving the AC input power. The first protection circuit 1110 serves to prevent the alternating current output by the second switching circuit 800 from being output to the AC input terminal 100.
In one embodiment of the present invention, the second protection circuit 1120 is connected to the voltage boost circuit 710, the DC output terminal 900 and the first switch circuit 600, respectively, wherein the first protection circuit 1110 directly outputs the AC input power from the AC input terminal 100 to the AC output terminal 200 after receiving the AC input power. The second protection circuit 1120 serves to prevent the direct current output by the first switching circuit 600 from being output to the DC input terminal 900.
In an embodiment of the present invention, the detection circuit 300 is connected to the AC input terminal 100, the controller 400 and the DC input terminal 900, respectively, wherein the detection circuit is configured to detect power supply conditions of the AC input terminal 100 and the DC input terminal 900, and according to whether the AC input terminal 100 and the DC input terminal 900 are powered by three power supply conditions, the three power supply conditions are: only AC power supply, only DC power supply, and both AC and DC power supply, it should be noted that, after detecting the power supply conditions of the AC input terminal 100 and the DC input terminal 900, the detection circuit 300 outputs a corresponding detection signal according to different power supply conditions, and outputs the detection signal to the controller 400.
In an embodiment of the present invention, the controller 400 is connected to the AC input terminal 100, the detection circuit 300, the first switch circuit 600, the second switch circuit 800 and the DC input terminal 900, respectively, and the controller 400 switches the power supply mode according to the detection signal output by the detection circuit 300 when receiving the detection signal. It should be noted that, as can be seen from the above, there are three power supply situations, so the detection circuit 300 outputs three detection signals to the controller 400 according to three power supply situations, namely, AC source power supply only, DC source power supply only, and AC source and DC source power supply jointly. Therefore, there are three power supply modes, which are an AC source priority power supply mode, a DC source priority power supply mode, and a common power supply mode.
In a specific implementation, the detection circuit 300 is configured to detect power supply modes input to the AC input terminal 100 and the DC input terminal 900, when the controller 400 selects a current AC source priority power supply mode, if the AC source is powered off, the detection circuit 300 may detect that only the DC source is currently powered on, and output a corresponding detection signal to the controller 400, and the controller 400 automatically switches to the DC source priority power supply mode according to the received detection signal; when the controller 400 selects the current DC source priority power supply mode, if the DC source is powered off, the detection circuit 300 detects that only the AC source is currently powered on, and outputs a corresponding detection signal to the controller 400, and the controller 400 automatically switches to the AC source priority power supply mode according to the received detection signal; when the AC input terminal 100 and the DC input terminal 900 are connected to an AC source and a DC source, respectively, the detection circuit 300 detects that the AC source and the DC source are currently supplied with power together, and outputs a corresponding detection signal to the controller 400, and the controller 400 automatically switches to the common power supply mode according to the received detection signal.
It should be noted that, the controller 400 also controls the on and off of the first switch circuit 600 and the second switch circuit 800 according to the current power supply mode, specifically:
when the current power supply mode is selected as the AC source priority power supply mode, the controller 400 controls the first switch circuit 400 to be turned on and controls the second switch circuit 800 to be turned off;
when the current power supply mode is selected as the DC source priority power supply mode, the controller 400 controls the first switch circuit 400 to be turned off and controls the second switch circuit 800 to be turned on;
when the current power supply mode is selected as the common power supply mode, the controller 400 controls the first switch circuit 400 to be turned off and controls the second switch circuit 800 to be turned off.
In one embodiment of the present invention, the rectifying circuit 510 is connected to the first protection circuit 1110, the AC output terminal 200, and the voltage step-down circuit 520, respectively. The rectifying circuit 510 is configured to convert the ac power input from the first protection circuit 1110 into dc power and output the dc power to the voltage step-down circuit 520.
In one embodiment of the present invention, the first converting circuit 500 is a bridge rectifier filter circuit.
In an embodiment of the present invention, the voltage-reducing circuit 520 is connected to the rectifying circuit 510 and the first switching circuit 400, respectively, and the voltage-reducing circuit 520 is configured to reduce the DC power input from the rectifying circuit 510 so that the DC power can be used to supply the power to be DC power. Due to the second protection circuit 1120, the direct current cannot be output to the DC input terminal 900.
Specifically, when the first switch circuit 600 is turned on in the current AC source priority power supply mode, the rectifying circuit 510 receives the AC power input by the first protection circuit 1110, converts the input AC power into DC power, and outputs the DC power to the voltage step-down circuit 520, and the voltage step-down circuit 520 steps down the DC power after receiving the DC power, so that the DC power can be used to supply the power to be DC power supply, and outputs the DC power to the DC output terminal 1000.
In an embodiment of the present invention, the voltage boost circuit 710 is connected to the inverter circuit 720, the second protection circuit 1120 and the DC output terminal, respectively, and the voltage boost circuit 710 is configured to boost the direct current input by the second protection circuit 1120 and output the boosted direct current to the inverter circuit 720.
In one embodiment of the present invention, the inverter circuit 720 is connected to the boosting circuit 710 and the second switching circuit 800, respectively. The inverter circuit 720 is configured to convert the dc power output from the boost circuit 710 into AC power and output the AC power to the AC output terminal 200 through the second switch circuit 800, and the AC power cannot be output to the AC input terminal 100 due to the first protection circuit 1110.
Specifically, when the second switch circuit 800 is turned on in the current DC source priority power supply mode, the voltage boost circuit 710 boosts the input DC power and outputs the boosted DC power to the inverter circuit 720 after receiving the DC power input from the first protection circuit 1110, and the inverter circuit 720 converts the DC power into an AC power and outputs the AC power to the AC output terminal 200 after receiving the AC power.
The two cases described above illustrate the control behavior of the controller 400 for the first switching circuit 600 and the second switching circuit 800 when in the AC source priority power supply mode and the DC source priority power supply mode, respectively. When the whole circuit is in the common power supply mode, the controller 400 controls the first switch circuit 400 and the second switch circuit 800 to be turned off, so that the AC power input from the AC input terminal 100 is directly output from the AC output terminal 200, and the DC power input from the DC input terminal 900 is directly output from the DC output terminal 1000.
In this way, the embodiment of the utility model provides a dual input power supply circuit can realize only having the direct current source power supply, only having the alternating current source power supply or having the direct current source simultaneously and alternating current source power supply under the condition, the homoenergetic carries out effective power supply for AC/DC power and DC/DC power simultaneously, has enlarged the range of application and has improved the availability factor.
Referring to fig. 3, fig. 3 is a circuit structure diagram of a voltage reduction circuit according to an embodiment of the present invention, in an embodiment of the present invention, the voltage reduction circuit 520 is implemented by an adjustable voltage dividing resistor to reduce voltage and adjust voltage.
Referring to fig. 4, fig. 4 is a circuit structure diagram of a protection circuit according to an embodiment of the present invention, in an embodiment of the present invention, the first protection circuit 1110 and the second protection circuit 1120 are respectively composed of a relay and a diode, wherein the AC input terminal 100 is connected to one end of the relay, and the other end of the relay is connected to the rectification circuit 510, the second switch circuit 800 and the AC output terminal 200; the DC input 900 is connected to the anode of the diode, and the cathode of the diode is connected to the boost circuit 710, the first switch circuit 600, and the DC output 1000, respectively. In this way, when the circuit is in the AC source priority power supply mode, due to the unidirectional conductivity of the diode, the direct current converted by the rectifying circuit 510, the voltage reducing circuit 520 and the first switch circuit 600 can only be output to the DC output terminal 1000, but not to the DC input terminal 900; and when the circuit is in the DC source priority power supply mode, and the second switch circuit 800 is turned on, the relay connected between the AC input terminal 100 and the AC output terminal 200 is turned off, so that the AC power converted by the boost circuit 710, the inverter circuit 720, and the second switch circuit 800 can be output only to the AC output terminal 200, but not to the AC input terminal 100.
It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A dual-input power supply circuit, comprising: an AC input terminal, an AC output terminal, a detection circuit, a controller, a first conversion circuit, a first switching circuit, a second conversion circuit, a second switching circuit, a DC input terminal, and a DC output terminal,
the AC input is directly connected to the AC output and the DC input is directly connected to the DC output;
the detection circuit is connected to the AC input end and the DC input end, and is used for detecting the power supply condition change of the AC input end and the DC input end and outputting corresponding detection signals to the controller;
the controller is respectively connected with the AC input end, the DC input end, the signal output end of the detection circuit, the control end of the first switch circuit and the control end of the second switch circuit;
the controller is configured to: controlling the first switch circuit and the second switch circuit to switch between a conducting state and a disconnecting state according to the currently selected power supply mode;
an input terminal of the first conversion circuit is connected to a first connection node between the AC input terminal and the AC output terminal; the first switching circuit is connected to a second connection node between the DC input terminal and the DC output terminal through the first switching circuit;
an input terminal of the second conversion circuit is connected to a fourth connection node between the DC input terminal and the DC output terminal; the second conversion circuit is connected to a third connection node between the AC input terminal and the AC output terminal through the second switch circuit.
2. The dual-input power supply circuit of claim 1, further comprising a first protection circuit and a second protection circuit, the first protection circuit being connected between the AC input terminal and the first connection node, the first protection circuit being configured to prevent a reverse flow of current into the AC input terminal;
the second protection circuit is connected between the DC input terminal and the second connection node, and the second protection circuit is configured to prevent a reverse current from flowing into the DC input terminal.
3. The dual-input power supply circuit according to claim 2, wherein the first protection circuit is constituted by a relay, one end of which is connected to the first connection node, and the other end of which is connected to the AC input terminal;
the second protection circuit is constituted by a diode, a cathode of the diode is connected to the second connection node, and an anode of the diode is connected to the DC input terminal.
4. The dual input power supply circuit of claim 1, wherein the power supply modes include an AC source priority power supply mode, a DC source priority power supply mode, and a common power supply mode.
5. The dual-input power circuit as claimed in any one of claims 1-4, wherein when said detection circuit detects that said dual-input power circuit is in a common power mode, said detection circuit outputs an off signal to said controller, and said controller controls said first switch circuit and said second switch circuit to be both off.
6. The dual-input power circuit of claim 5, wherein when the detection circuit detects that the dual-input power circuit is in an AC source priority power supply mode, the detection circuit sequentially outputs a turn-on signal and a turn-off signal to the controller, and the controller controls the first switch circuit to be turned on and the second switch circuit to be turned off;
when the detection circuit detects that the dual-input power supply circuit is in a DC source priority power supply mode, the detection circuit sequentially outputs a disconnection signal and a connection signal to the controller, and the controller controls the first switch circuit to be disconnected and controls the second switch circuit to be connected.
7. The dual-input power supply circuit according to claim 1, wherein the first conversion circuit includes a rectifying circuit and a voltage-reducing circuit, an input terminal of the rectifying circuit is connected to the first node, an output terminal of the rectifying circuit is connected to an input terminal of the voltage-reducing circuit, an output terminal of the voltage-reducing circuit is connected to the first switching circuit, and the rectifying circuit is configured to convert alternating current input from the AC input terminal into direct current.
8. The dual-input power supply circuit according to claim 1, wherein the second conversion circuit includes an inverter circuit and a booster circuit, an input terminal of the booster circuit is connected to the fourth node, an output terminal of the booster circuit is connected to an input terminal of the inverter circuit, an output terminal of the inverter circuit is connected to the second switch circuit, and the inverter circuit is configured to convert a direct current input from the DC input terminal and passing through the booster circuit into an alternating current.
9. The dual-input power circuit as claimed in claim 7, wherein said voltage-reducing circuit is composed of an adjustable resistor.
10. A dual-input power supply device comprising the dual-input power supply circuit of any one of claims 1 to 9 and a housing;
the dual-input power circuit is accommodated in the housing, the housing includes at least four external ports, and the external ports are electrically connected to the AC input terminal, the DC input terminal, the AC output terminal, and the DC output terminal of the dual-input power circuit, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220510471.7U CN217388530U (en) | 2022-03-09 | 2022-03-09 | Double-input power supply circuit and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220510471.7U CN217388530U (en) | 2022-03-09 | 2022-03-09 | Double-input power supply circuit and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217388530U true CN217388530U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220510471.7U Active CN217388530U (en) | 2022-03-09 | 2022-03-09 | Double-input power supply circuit and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217388530U (en) |
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2022
- 2022-03-09 CN CN202220510471.7U patent/CN217388530U/en active Active
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