CN105680556A - Dual-power-source power supply circuit for outputting multi-voltage direct current - Google Patents
Dual-power-source power supply circuit for outputting multi-voltage direct current Download PDFInfo
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- CN105680556A CN105680556A CN201610152422.XA CN201610152422A CN105680556A CN 105680556 A CN105680556 A CN 105680556A CN 201610152422 A CN201610152422 A CN 201610152422A CN 105680556 A CN105680556 A CN 105680556A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/067—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems using multi-primary transformers, e.g. transformer having one primary for each AC energy source and a secondary for the loads
Abstract
The invention discloses a dual-power-source power supply circuit for outputting multi-voltage direct current. The dual-power-source power supply circuit comprises a mains supply connector, wherein the mains supply connector is electrically connected with an electromagnetic filtering and overcurrent protection circuit; the electromagnetic filtering and overcurrent protection circuit is electrically connected with a transformer; the transformer is electrically connected with a filtering rectifying and voltage-reducing circuit; the filtering rectifying and voltage-reducing circuit is electrically connected to charging peripheral circuits that are mutually connected, a charging control circuit used for charging a lithium battery, a dual-power-source switching circuit, a 12V-to-5V voltage-reducing voltage and a 5V-to-3.3V voltage-reducing circuit; and the dual-power-source switching circuit controls the mains supply or the lithium battery to be used as the power source to output 12V, 15V and 3.3V direct current. The invention provides a set of power supply systems for realizing 12V, 15V and 3.3V direct current output so as to satisfy power supply requirements of equipment having different power supply demands; and in addition, the dual-power-source mode powered by the mains supply and the lithium battery ensures the power supply stability, so that the condition that the system cannot work caused by power outage can be avoided.
Description
Technical field
The present invention relates to a kind of feed circuit, especially a kind of double power supply circuit exporting multi-voltage DC electricity.
Background technology
Along with the progress of science and technology, the signals collecting transmission system of fire-fighting main frame has become the research direction of more and more enterprise, R&D institution, the fire-fighting host signal acquiring and transmission system with various function arises at the historic moment, but due to this kind of system comparatively complicated, relate to varied electron device needing different power voltage, such as 12V voltage, 5V voltage, 3.3V voltage, but how the 12V voltage needed for these electronicss, 5V voltage, 3.3V voltage is provided just to become problem demanding prompt solution by a set of feed circuit.
Summary of the invention
The object of the present invention is exactly to solve the above-mentioned problems in the prior art, it is provided that a kind of double power supply circuit exporting multi-voltage DC electricity.
The object of the present invention is achieved through the following technical solutions:
A kind of double power supply circuit exporting multi-voltage DC electricity, comprise mains connection, described mains connection is electrically connected electromagnetic separation and current foldback circuit, described electromagnetic separation and current foldback circuit are electrically connected transformer, described transformer is electrically connected filter rectification and step-down circuit, described filter rectification and step-down circuit are electrically connected to the peripheral circuit of interconnective charging, for giving the charging control circuit of lithium cell charging, dual power supply switching circuit, 12V turns 5V step-down circuit and 5V turns 3.3.V step-down circuit, described dual power supply switching circuit control city's electricity or lithium cell as power supply and export 12V, 5V, 3.3V direct current.
Preferably, described a kind of double power supply circuit exporting multi-voltage DC electricity, wherein: described charging control circuit comprises charge controlling chip,
13 pin of described charge controlling chip and 15 pin connect the peripheral circuit of described charging;
7 pin of described charge controlling chip connect one end of the first resistance, the positive pole of the other end sending and receiving optical diode of described first resistance, the negative pole of described photodiode connects the designated components in interconnection described filter rectification and step-down circuit, charging peripheral circuit, charging control circuit, 12V turns 5V step-down circuit, 5V turns 3.3V step-down circuit, dual power supply switching circuit, the first connection terminal and ground terminal;
6 pin of described charge controlling chip connect one end of the 2nd resistance, 9 pin of the described charge controlling chip that another termination of described 2nd resistance is interconnection, one end of first electric capacity and one end of the 3rd resistance, 12 pin of the charge controlling chip that another termination of described first electric capacity is interconnection, one end of 4th resistance, the peripheral circuit of charging, designated components in charging control circuit, dual power supply switching circuit, 12V turns 5V step-down circuit, 5V turns 3.3.V step-down circuit, first connection terminal and ground terminal, the other end of described 3rd resistance connects with the other end of described 4th resistance and all receives 8 pin of described charge controlling chip,
4 pin of described charge controlling chip connect one end of the 5th resistance, one end of another termination the 2nd electric capacity of described 5th resistance, the other end of described 2nd electric capacity connects the designated components in one end of the 3rd interconnection electric capacity, one end of the 4th electric capacity, one end of the 5th electric capacity, charging peripheral circuit, charging control circuit, dual power supply switching circuit, 12V turn 5V step-down circuit, 5V turns 3.3.V step-down circuit, the first connection terminal and ground terminal; 5 pin of charge controlling chip described in another termination of described 3rd electric capacity, 3 pin of charge controlling chip described in another termination of described 4th electric capacity, 16 pin of charge controlling chip described in another termination of described 5th electric capacity;
2 pin of described charge controlling chip connect described dual power supply switching circuit;
1 pin of described charge controlling chip connects one end of the 6th interconnection electric capacity and one end of the 6th resistance, in designated components in described charging peripheral circuit, charging control circuit that another termination of described 6th electric capacity is interconnection, dual power supply switching circuit, 12V turn 5V step-down circuit, 5V turn 3.3.V step-down circuit, the first connection terminal and ground terminal, the interconnective dual power supply switching circuit of another termination of described 6th resistance, 1 pin of MOS pipe, 2 pin, 3 pin, 4 pin of described MOS pipe connect 14 pin of described charge controlling chip, 5 pin-8 pin of described MOS pipe connect and all receive the negative pole of the first interconnection Zener diode and one end of the first inductance, and the positive pole of described first Zener diode is connected to the peripheral circuit of interconnective charging, designated components in charging control circuit, dual power supply switching circuit, 12V turns 5V step-down circuit, 5V turns 3.3.V step-down circuit, first connection terminal, ground terminal, the negative pole of the first polar capacitor and the negative pole of lithium cell, the described positive pole of the first polar capacitor is connected with the positive pole of lithium cell and is all connected to 10 pin of interconnective charge controlling chip, one end of 7th resistance, the positive pole of the 2nd Zener diode, the other end of described first inductance that another termination of described 7th resistance is interconnection and 11 pin of described charge controlling chip, the negative pole of described 2nd Zener diode connects described dual power supply switching circuit.
Preferably, described a kind of double power supply circuit exporting multi-voltage DC electricity, wherein: described 12V turns 5V step-down circuit 7 and comprises LM2576HVS-5.0 chip, 1 pin of described LM2576HVS-5.0 chip connects 12V DC output end, 2 pin of described LM2576HVS-5.0 chip connect the negative pole of the 3rd interconnection Zener diode and one end of the 2nd inductance, the positive pole of described 3rd Zener diode connects 3 pin of interconnection LM2576HVS-5.0 chip, 5 pin, filter rectification and step-down circuit, the peripheral circuit charging control circuit of charging, 5V turns 3.3V step-down circuit, dual power supply switching circuit, first connection terminal and ground terminal, 4 pin of the LM2576HVS-5.0 chip that another termination of described 2nd inductance is interconnection, 5V voltage terminal and 5V DC output end, and export 5V direct current from 5V DC output end.
Preferably, described a kind of double power supply circuit exporting multi-voltage DC electricity, wherein: described 5V turns 3.3V step-down circuit and comprises syllogic linear voltage stabilization chip, 3 pin of described syllogic linear voltage stabilization chip are connected to the designated components that interconnection described 12V turns 5V step-down circuit, the positive pole of polar capacitor and one end of electric capacity, the negative pole of described polar capacitor, the other end of electric capacity connects and connects described filter rectification and step-down circuit, the peripheral circuit of charging, charging control circuit, 12V turns 5V step-down circuit, 5V turns the designated components in 3.3V step-down circuit, dual power supply switching circuit, first connection terminal and ground terminal, 2 pin of described syllogic linear voltage stabilization chip connect the positive pole of the 2nd interconnection polar capacitor, one end of 8th electric capacity, one end of 11 resistance and 3.3V DC output end, and export 3.3V direct current from 3.3V DC output end, the negative pole of described 2nd polar capacitor, the other end of the 8th electric capacity is connected and is connected to 1 pin of interconnection syllogic linear voltage stabilization chip, the negative electrode of the 2nd photodiode, the peripheral circuit of charging, charging control circuit, dual power supply switching circuit, 12V turns 5V step-down circuit, 5V turns the designated components in 3.3V step-down circuit, first connection terminal and ground terminal, the positive pole of described 2nd photodiode connects the other end of described 11 resistance.
The advantage of technical solution of the present invention is mainly reflected in:
Inventive design is exquisite, structure is simple, the direct current output of 12V, 5V, 3.3V can be realized by a set of power supply system, thus meet the power supply needs of the equipment of multiple different need for electricity, avoid and use multiple power supply the electrical equipment in relatively complicated circuit to be powered, and by the dual power mode of lithium cell and mains-supplied, ensure that the stability of power supply, avoid the situation that system causes working because having a power failure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the schematic circuit of the present invention.
Embodiment
The object of the present invention, advantage and disadvantage, by for illustration and explanation by the non-limitative illustration of preferred embodiment below. These embodiments are only the prominent examples of application technical solution of the present invention, all take equivalent replacement or equivalent transformation and the technical scheme that formed, all drop within the scope of protection of present invention.
A kind of double power supply circuit exporting multi-voltage DC electricity that the present invention discloses, as shown in Figure 1, comprise mains connection J8, described mains connection J8 is electrically connected electromagnetic separation and current foldback circuit 2, described electromagnetic separation and current foldback circuit 2 are electrically connected transformer T1, described transformer T1 is electrically connected filter rectification and step-down circuit 3, described filter rectification and step-down circuit 3 are electrically connected to the peripheral circuit 4 of interconnective charging, for the charging control circuit 5 powered for lithium cell BT2, dual power supply switching circuit 6, 12V turns 5V step-down circuit 7 and 5V turns 3.3.V step-down circuit 8, described dual power supply switching circuit 6 controls city's electricity or lithium cell BT2 as power supply and exports 12V, 5V, 3.3V direct current.
Concrete, as shown in Figure 2,2 pin of described mains connection J8 connect switch S 1, and described switch S 1 connects one end of safety fuse F1,1 pin of the one end of the electric capacity C35 that another termination of described safety fuse F1 is interconnection, one end of thermistor R77 and transformer T1 former limit winding; 1 pin of described mains connection J8 connects 2 pin of the interconnection the other end of described electric capacity C35, the other end of thermistor R77 and transformer T1 former limit winding, and foregoing circuit forms described electromagnetism overload and current foldback circuit 2.
Described transformer vice-side winding is connected to described filter rectification and step-down circuit 3, described filter rectification and step-down circuit 3 comprise on rectification bridge that is that be made up of four voltage stabilizing tubes D29, D30, D33, D34 and that be connected with 3 pin of above-mentioned transformer vice-side winding, 4 pin, concrete, 3 pin of described transformer vice-side winding connect the positive pole of interconnection diode D29 and the negative pole of diode D33, and 4 pin of described transformer vice-side winding are connected to the positive pole of interconnection diode D30 and the negative pole of diode D34.
The negative pole of described diode D29 is connected with the negative pole of described diode D30 and is all connected to the positive pole of polar capacitor C37 and 1 pin of voltage stabilizing chip U9;
The positive pole of described diode D33 be connected with the positive pole of diode D34 and be all connected in one end of electric capacity C41 in the negative pole of interconnection described polar capacitor C37,3 pin of voltage stabilizing chip U9,5 pin, the positive pole of Zener diode D32, the negative pole of polar capacitor C36, the peripheral circuit 4 of charging, charging control circuit 5 designated components, 12V turns 5V step-down circuit 7,5V turns 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal;
2 pin of described voltage stabilizing chip U9 connect one end of inductance L 3 in the negative pole of interconnection described Zener diode D32, the peripheral circuit 4 that charges;
4 pin of described voltage stabilizing chip U9 connect the positive pole of Zener diode D31 in the peripheral circuit 4 of the interconnection positive pole of described polar capacitor C36, the other end of inductance L 3 and charging;
One end of electric capacity C39 in 15 pin of the negative pole of Zener diode D31, charge controlling chip U10, dual power supply switching circuit 6, the peripheral circuit 4 of charging described in another termination of described electric capacity C41,13 pin of charge controlling chip U10 in charging control circuit 5 described in another termination of described electric capacity C39.
7 pin of the charge controlling chip U10 in described charging control circuit 5 connect one end of the first resistance R84, the positive pole of another termination first photodiode D35 of described first resistance R84, the negative pole of described first photodiode D35 connects the designated components in described filter rectification and step-down circuit 3, charging peripheral circuit 4, charging control circuit 4, and 12V turns 5V step-down circuit 7,5V turns 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal.
6 pin of described charge controlling chip U10 connect one end of the 2nd resistance R88,9 pin of the charge controlling chip U10 that another termination of described 2nd resistance R88 is interconnection, one end of the first electric capacity C42 and one end of the 3rd resistance R83;
Designated components in 12 pin of the described charge controlling chip U10 that another termination of described first electric capacity C42 is interconnection, one end of the 4th resistance R87, described filter rectification and step-down circuit 3, charging peripheral circuit 4, charging control circuit 5,12V turns 5V step-down circuit 7,5V turns 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal;
The other end of described 3rd resistance R83 connects with the other end of described 4th resistance R87 and all receives 8 pin of described charge controlling chip.
4 pin of described charge controlling chip U10 connect one end of the 5th resistance R86, one end of another termination the 2nd electric capacity C44 of described 5th resistance R86, designated components that another termination of described 2nd electric capacity C44 is interconnected in one end of the 3rd electric capacity C45, one end of the 4th electric capacity C46, one end of the 5th electric capacity C47, described filter rectification and step-down circuit 3, charging peripheral circuit 4, charging control circuit 5,12V turns 5V step-down circuit 7,5V turns 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal;
5 pin of charge controlling chip U10 described in another termination of described 3rd electric capacity C45,3 pin of charge controlling chip U10 described in another termination of described 4th electric capacity C46,16 pin of charge controlling chip U10 described in another termination of described 5th electric capacity C47.
2 pin of described charge controlling chip U10 connect described dual power supply switching circuit 6;
1 pin of described charge controlling chip U10 connects one end of the 6th electric capacity C40 and one end of the 6th resistance R82, and designated components in filter rectification described in another termination of described 6th electric capacity C40 and step-down circuit 3, charging peripheral circuit 4, charging control circuit 5,12V turns 5V step-down circuit 7,5V turns 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal;
1 pin of the interconnective MOS pipe Q4 of another termination of described 6th resistance R82, 2 pin, 3 pin, 4 pin of described MOS pipe Q4 connect 14 pin of described charge controlling chip U10, 5 pin-8 pin of described MOS pipe Q4 connect and all receive the negative pole of the first interconnection Zener diode D37 and one end of the first inductance L 4, the positive pole of described first Zener diode D37 is connected to interconnection described filter rectification and step-down circuit 3, the peripheral circuit 4 of charging, designated components in charging control circuit 5, 12V turns 5V step-down circuit 7, 5V turns 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16, ground terminal, the negative pole of the first polar capacitor C43 and the negative pole of lithium cell BT2,
The described positive pole of the first polar capacitor C43 is connected with the positive pole of lithium cell BT2 and is all connected to 10 pin of interconnection charge controlling chip U10, one end of the 7th resistance R85, the positive pole of the 2nd Zener diode D36, the described the other end of the first inductance L 4 that another termination of described 7th resistance R85 is interconnection and 11 pin of charge controlling chip U10, the negative pole of described 2nd Zener diode D36 meets the 3rd contact M3 of described dual power supply switching circuit 6 repeat circuit.
Further, described dual power supply switching circuit comprises the 7th electric capacity C38 and the 8th resistance R79 of 2 pin being connected to described charge controlling chip U10;
Described 7th electric capacity C38 connects described filter rectification and step-down circuit 3, the peripheral circuit 4 that charges, the designated components of charging control circuit, 12V turn 5V step-down circuit 7,5V turns 3.3V step-down circuit 8, first connection terminal J16 and ground terminal;
Described 8th resistance R79 connects one end of the 9th interconnection resistance R80, one end of tenth resistance R78, the positive pole of the first diode D1 and the first contact M1 of rly., 1 pin-3 pin of the 6th resistance R82 and MOS pipe Q4 described in another termination of described 9th resistance R80, the base stage of another termination triode Q3 of described tenth resistance R78, one end of the emtting electrode connecting resistance R81 of described triode Q3, the described 7th electric capacity C38 that another termination of described resistance R81 is interconnection, filter rectification and step-down circuit 3, the peripheral circuit 4 of charging, designated components in charging control circuit, 12V turns 5V step-down circuit 7, 5V turns 3.3V step-down circuit 8, first connection terminal J16 and ground terminal,
The collector electrode of described triode Q3 connects the coil of described rly. and the positive pole of the 2nd diode D2, described relay1 coil is connected with the negative pole of described 2nd diode D2 and is all connected to the 2nd sub-J11 and the 12V DC output end of contact M2,12V voltage terminal of the negative pole of interconnection described first diode D1, rly., and described 12V DC output end exports 12V direct current;
3rd contact M3 of described rly. receives the negative electrode of the 2nd Zener diode D36 in described charging control circuit 5.
Further, described 12V turns 5V step-down circuit 7 and comprises LM2576HVS-5.0 chip U11,1 pin of described LM2576HVS-5.0 chip U11 connects described 12V DC output end, and 2 pin of described LM2576HVS-5.0 chip U11 connect the negative pole of the 3rd Zener diode D38 and one end of the 2nd inductance L 5;
The positive pole of described 3rd Zener diode D38 receives 3 pin of interconnective described LM2576HVS-5.0 chip U11,5 pin, filter rectification and step-down circuit 3, the peripheral circuit 4 of charging, charging control circuit, 5V turn 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal;
The other end of described 2nd inductance L 5 receives 4 pin of interconnective LM2576HVS-5.0 chip U11,5V turns 3.3V step-down circuit, sub-J17 and the 5V DC output end of 5V voltage terminal, and exports 5V direct current from 5V DC output end.
Further, described 5V turns 3.3V step-down circuit and comprises syllogic linear voltage stabilization chip U12, 3 pin of described syllogic linear voltage stabilization chip U12 are connected to the 2nd above-mentioned inductance L 5, 4 pin of LM2576HVS-5.0 chip U11, the sub-J17 of 5V voltage terminal, 5V DC output end, the positive pole of polar capacitor C48 and one end of electric capacity C40, the negative pole of described polar capacitor C48, the other end of electric capacity C40 connects and connects described filter rectification and step-down circuit 3, the peripheral circuit 4 of charging, charging control circuit 5, 12V turns 5V step-down circuit 7, 5V turns the designated components in 3.3V step-down circuit 8, dual power supply switching circuit 6, first connection terminal J16 and ground terminal.
2 pin of described syllogic linear voltage stabilization chip U12 connect the positive pole of the 2nd interconnection polar capacitor C50, one end of the 8th electric capacity C51, one end of the 11 resistance R21 and 3.3V DC output end, and export 3.3V direct current from 3.3V DC output end; The negative pole of described 2nd polar capacitor C50, the other end of the 8th electric capacity C51 be connected and be all connected to interconnection described filter rectification and step-down circuit 3, the peripheral circuit 4 of charging, charging control circuit 5,12V turn 5V step-down circuit 7, dual power supply switching circuit 6, connection terminal J16 and ground terminal, 1 pin of syllogic linear voltage stabilization chip U12 and the negative electrode of the 2nd photodiode D3, the positive pole of described 2nd photodiode D3 connects the other end of described 11 resistance R21.
When the power supply system of the present invention works, the 220V voltage of city's electricity input is after described transformer T1 is reduced to 10V, 18V it is raised to after filter rectification, lithium cell BT2 is charged by described charging control circuit 5 by described 18V direct current after described voltage stabilizing chip U9 is reduced to 12V, now, described first photodiode D35 is bright, represents and is being charged by lithium cell; Meanwhile, described dual power supply switching circuit 6 controls city's electricity and powers, and exports 12V direct current.
Described 12V turns 5V step-down circuit 7 and 12V direct current is depressured to 5V direct current exports to electrical equipment, and meanwhile, described 12V turns 12V direct current that 5V step-down circuit exports and also turns 3.3V step-down circuit 8 through described 5V and be depressured to 3.3V and export to corresponding electrical equipment.
After cutting off mains-supplied, whole circuit is switched to lithium cell BT2 powering mode by described dual power supply switching circuit 6, according to the capacity of described lithium cell BT2, supplies the direct current of the above-mentioned voltage of fixed time for electrical equipment.
The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technical schemes of being formed, all drops within protection scope of the present invention.
Claims (4)
1. one kind exports the double power supply circuit of multi-voltage DC electricity, comprise mains connection (J8), it is characterized in that: described mains connection (J8) is electrically connected electromagnetic separation and current foldback circuit (2), described electromagnetic separation and current foldback circuit (2) are electrically connected transformer (T1), described transformer (T1) is electrically connected filter rectification and step-down circuit (3), described filter rectification and step-down circuit (3) are electrically connected to the peripheral circuit (4) of interconnective charging, for the charging control circuit (5) charging to lithium cell (BT2), dual power supply switching circuit (6), 12V turns 5V step-down circuit (7) and 5V and turns 3.3.V step-down circuit (8), described dual power supply switching circuit (6) control city's electricity or lithium cell (BT2) as power supply and export 12V, 5V, 3.3V direct current.
2. a kind of double power supply circuit exporting multi-voltage DC electricity according to claim 1, it is characterised in that: described charging control circuit (5) comprises charge controlling chip (U10),
13 pin of described charge controlling chip (U10) and 15 pin connect the peripheral circuit (5) of described charging;
7 pin of described charge controlling chip (U10) connect one end of the first resistance (R84), the positive pole of the other end sending and receiving optical diode (D35) of described first resistance (R84), the negative pole of described photodiode (D35) connects the designated components in interconnection described filter rectification and step-down circuit (3), the peripheral circuit (4) of charging, charging control circuit (5), 12V turns 5V step-down circuit (7), 5V turns 3.3V step-down circuit (8), dual power supply switching circuit (6), the first connection terminal (J16) and ground terminal;
6 pin of described charge controlling chip (U10) connect one end of the 2nd resistance (R88), 9 pin of the described charge controlling chip (U10) that another termination of described 2nd resistance (R88) is interconnection, one end of first electric capacity (C42) and one end of the 3rd resistance (R83), 12 pin of the charge controlling chip (U10) that another termination of described first electric capacity (C42) is interconnection, one end of 4th resistance (R87), the peripheral circuit (4) of charging, designated components in charging control circuit (5), dual power supply switching circuit (6), 12V turns 5V step-down circuit (7), 5V turns 3.3.V step-down circuit (8), first connection terminal (J16) and ground terminal, the other end of described 3rd resistance (R83) connects with the other end of described 4th resistance (R87) and all receives 8 pin of described charge controlling chip (U10),
4 pin of described charge controlling chip (U10) connect one end of the 5th resistance (R86), one end of another termination the 2nd electric capacity (C44) of described 5th resistance (R86), the other end of described 2nd electric capacity (C44) connects one end of the 3rd interconnection electric capacity (C45), one end of 4th electric capacity (C46), one end of 5th electric capacity (C47), the peripheral circuit (4) of charging, designated components in charging control circuit (5), dual power supply switching circuit (6), 12V turns 5V step-down circuit (7), 5V turns 3.3.V step-down circuit (8), first connection terminal (J16) and ground terminal, 5 pin of charge controlling chip (U10) described in another termination of described 3rd electric capacity (C45), 3 pin of charge controlling chip (U10) described in another termination of described 4th electric capacity (C46), 16 pin of charge controlling chip (U10) described in another termination of described 5th electric capacity (C47),
2 pin of described charge controlling chip (U10) connect described dual power supply switching circuit (6);
1 pin of described charge controlling chip (U10) connects one end of the 6th interconnection electric capacity (C40) and one end of the 6th resistance (R82), and designated components, dual power supply switching circuit (6) in the interconnection peripheral circuit (4) of described charging of another termination of described 6th electric capacity (C40), charging control circuit (5), 12V turns 5V step-down circuit (7), 5V turns 3.3.V step-down circuit (8), the first connection terminal (J16) and ground terminal, the interconnective dual power supply switching circuit of another termination (6) of described 6th resistance (R82), 1 pin of MOS pipe (Q4), 2 pin, 3 pin, 4 pin of described MOS pipe (Q4) connect 14 pin of described charge controlling chip (U10), 5 pin-8 pin that described MOS manages (Q4) connect and all receive the negative pole of interconnection the first Zener diode (D37) and one end of the first inductance (L4), the positive pole of described first Zener diode (D37) is connected to the peripheral circuit (4) of interconnective charging, designated components in charging control circuit (5), dual power supply switching circuit (6), 12V turns 5V step-down circuit (7), 5V turns 3.3.V step-down circuit (8), first connection terminal (J16), ground terminal, the negative pole of the first polar capacitor (C43) and the negative pole of lithium cell (BT2), the positive pole of described first polar capacitor (C43) is connected with the positive pole of lithium cell (BT2) and is all connected to 10 pin of interconnective charge controlling chip (U10), one end of 7th resistance (R85), the positive pole of the 2nd Zener diode (D36), the other end of described first inductance (L4) that another termination of described 7th resistance (R85) is interconnection and 11 pin of described charge controlling chip (U10), the negative pole of described 2nd Zener diode (D36) connects described dual power supply switching circuit (6).
3. a kind of double power supply circuit exporting multi-voltage DC electricity according to claim 2, it is characterized in that: described 12V turns 5V step-down circuit (7) and comprises LM2576HVS-5.0 chip (U11), 1 pin of described LM2576HVS-5.0 chip (U11) connects 12V DC output end, 2 pin of described LM2576HVS-5.0 chip (U11) connect the negative pole of the 3rd interconnection Zener diode (D38) and one end of the 2nd inductance (L5), the positive pole of described 3rd Zener diode (D38) connects 3 pin of interconnection LM2576HVS-5.0 chip (U11), 5 pin, filter rectification and step-down circuit (3), the peripheral circuit (4) of charging, charging control circuit (5), 5V turns 3.3V step-down circuit (8), dual power supply switching circuit (6), first connection terminal (J16), and ground terminal, 4 pin of the LM2576HVS-5.0 chip (U11) that another termination of described 2nd inductance (L5) is interconnection, 5V voltage terminal (J17) and 5V DC output end, and export 5V direct current from 5V DC output end.
4. a kind of double power supply circuit exporting multi-voltage DC electricity according to claim 3, it is characterized in that: described 5V turns 3.3V step-down circuit (8) and comprises syllogic linear voltage stabilization chip (U12), 3 pin of described syllogic linear voltage stabilization chip (U12) are connected to the designated components that interconnection described 12V turns 5V step-down circuit (7), the positive pole of polar capacitor (C48) and one end of electric capacity (C40), the negative pole of described polar capacitor (C48), the other end of electric capacity (C40) connects and connects described filter rectification and step-down circuit (3), the peripheral circuit (4) of charging, charging control circuit (5), 12V turns 5V step-down circuit (7), 5V turns the designated components in 3.3V step-down circuit (8), dual power supply switching circuit (6), first connection terminal (J16) and ground terminal,
2 pin of described syllogic linear voltage stabilization chip (U12) connect the positive pole of the 2nd interconnection polar capacitor (C50), one end of 8th electric capacity (C51), one end of 11 resistance (R21) and 3.3V DC output end, and export 3.3V direct current from 3.3V DC output end, the negative pole of described 2nd polar capacitor (C50), the other end of the 8th electric capacity (C51) is connected and is connected to 1 pin of interconnection syllogic linear voltage stabilization chip (U12), the negative electrode of the 2nd photodiode (D3), the peripheral circuit (4) of charging, charging control circuit (5), dual power supply switching circuit (6), 12V turns 5V step-down circuit (7), 5V turns the designated components in 3.3V step-down circuit (8), first connection terminal (J16) and ground terminal, the positive pole of described 2nd photodiode (D3) connects the other end of described 11 resistance (R21).
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| CN201610152422.XA CN105680556A (en) | 2016-03-17 | 2016-03-17 | Dual-power-source power supply circuit for outputting multi-voltage direct current |
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| CN201610152422.XA CN105680556A (en) | 2016-03-17 | 2016-03-17 | Dual-power-source power supply circuit for outputting multi-voltage direct current |
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| CN201610152422.XA Pending CN105680556A (en) | 2016-03-17 | 2016-03-17 | Dual-power-source power supply circuit for outputting multi-voltage direct current |
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| CN110995028A (en) * | 2019-10-16 | 2020-04-10 | 国网浙江省电力有限公司嘉兴供电公司 | Multi-voltage power supply three-remote DTU terminal |
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| CN113472029A (en) * | 2021-06-15 | 2021-10-01 | 深圳市云鼠科技开发有限公司 | Power tree circuit applied to control circuit board of sweeping robot |
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