CN113078723A - Two-way quick-charging and quick-discharging two-in-one power supply - Google Patents
Two-way quick-charging and quick-discharging two-in-one power supply Download PDFInfo
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- CN113078723A CN113078723A CN202110362982.9A CN202110362982A CN113078723A CN 113078723 A CN113078723 A CN 113078723A CN 202110362982 A CN202110362982 A CN 202110362982A CN 113078723 A CN113078723 A CN 113078723A
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a bidirectional quick-charging and quick-discharging two-in-one power supply which comprises an AC-DC conversion circuit, a DC-DC conversion circuit, a protocol conversion circuit, an MCU (microprogrammed control unit) logic circuit, a battery, a USB-A (universal serial bus-analog) interface module and a Type-C interface module, wherein the AC-DC conversion circuit is connected with the DC-DC conversion circuit; the AC-DC conversion circuit converts the input alternating current into stable direct current and outputs the stable direct current to the DC-DC conversion circuit; the DC-DC conversion circuit is respectively connected with the MCU logic circuit, the protocol conversion circuit, the battery and the USB-A interface module; the protocol conversion circuit is respectively connected with the MCU logic circuit and the Type-C interface module; the logic control protocol of the MCU logic circuit realizes the bidirectional mode conversion of the Type-C interface module, namely the Type-C interface module is charged as input fast input, and the Type-C interface module is discharged fast as output.
Description
Technical Field
The invention relates to the technical field of power supply equipment, in particular to a bidirectional fast charging and discharging two-in-one power supply.
Background
When a wall-mounted portable power source in the market charges a battery, high voltage can be inserted from an AC end for charging just like an adapter, and a user cannot charge the battery under several special conditions.
1: when the position of the AC socket of a user is not ideal, the common wall-plugged mobile power supply cannot be placed while being punched; namely, the mobile phone is fully charged, and the battery is fully charged;
when the charging adapter used by a user is fixed and can not be detached, after the battery of the common wall-plugged type mobile power supply is over-discharged, no AC power supply is used for charging.
Disclosure of Invention
In order to solve the technical problem, the invention provides a two-way quick-charging and quick-discharging two-in-one power supply which comprises an AC-DC conversion circuit, a DC-DC conversion circuit, a protocol conversion circuit, an MCU (microprogrammed control unit) logic circuit, a battery, a USB-A interface module and a Type-C interface module;
the AC-DC conversion circuit converts the input alternating current into stable direct current and outputs the stable direct current to the DC-DC conversion circuit;
the DC-DC conversion circuit is respectively connected with the MCU logic circuit, the protocol conversion circuit, the battery and the USB-A interface module;
the protocol conversion circuit is respectively connected with the MCU logic circuit and the Type-C interface module;
the logic control protocol of the MCU logic circuit realizes the bidirectional mode conversion of the Type-C interface module, namely the Type-C interface module is charged as input fast input, and the Type-C interface module is discharged fast as output.
Optionally, the AC-DC conversion circuit includes a bridge circuit BD1, an inductor LF1, a transformer T1, a resistor R105, a resistor R106, a resistor R107, a resistor R108, a resistor R109, a resistor R110, a resistor R111, a resistor R112, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a resistor R119, a resistor R120, a resistor R121, a resistor R122, a resistor R123, a resistor R125, a resistor R126, a capacitor C100, a capacitor C101, a capacitor C100, a capacitor C102, a capacitor C103, a capacitor C104, a capacitor C105, a capacitor C106, a capacitor C107, a capacitor C108, a capacitor C109, a capacitor C110, a capacitor C111, a diode D100, a diode D101, a diode D102, a diode D103, a diode D104, a field effect transistor Q100, an integrated circuit U9, a diode U100, and a photo-coupler U101;
the pin 3 of the transformer T1 is respectively connected with one end of a resistor R116, one end of a resistor R118 and the anode of a diode D102, the other end of the resistor R118 is connected with one end of a capacitor C103, the cathode of the diode D102 is connected with the other end of the capacitor C103 and one end of a resistor R117, the other end of the resistor R117 is respectively connected with one end of a capacitor C104, one end of a capacitor C105, one end of a resistor R106 and the pin 5 of an integrated circuit U9, the other end of the resistor R106 is connected with the pin 3 of a bridge circuit BD1 through a resistor R100, the other end of the resistor R116 is connected with the pin 3 of the integrated circuit U9 and the anode of the diode D103, and the cathode of the diode D103 is connected with one end of a resistor R119; a pin 4 of the transformer T1 is respectively connected with the other end of a resistor R119, the other end of a capacitor C104, the other end of a capacitor C105, a pin 1 of an integrated circuit U9, one end of a capacitor C106, one end of a capacitor C107, one end of a resistor R114, one end of a resistor R115 and a pin 3 of a photoelectric coupler U101, a pin 4 of the photoelectric coupler U101 is connected with the other end of the capacitor C106 and a pin 2 of the integrated circuit U9, the other end of the capacitor C107 is connected with the pin 4 of the integrated circuit U9 and one end of a resistor R113, the other end of the resistor R113 is connected with the other end of the resistor R114, the other end of the resistor R115, one end of the resistor R112 and the pin 3 of the field-effect transistor Q100, the other end of the resistor R112, one end of the resistor R111, the anode of the diode D101 and the pin 1 of the field-effect transistor Q100, the other end of the resistor R111 is connected with the cathode of the, pin 2 of the field effect transistor Q100 is connected with pin 2 of the transformer T1;
Optionally, the DC-DC conversion circuit includes an integrated circuit U7, a resistor R41, a resistor R45, a resistor R47, a resistor R51, a capacitor C18, a capacitor C35, a capacitor C38, a capacitor C39, a capacitor C40, a capacitor C44, a capacitor C45, a capacitor C46, a capacitor C47, a capacitor C48, a capacitor C49, a capacitor C50, a capacitor C51, a capacitor C52, a capacitor C53, a capacitor C55, a capacitor C57, a capacitor C58, a diode D8, and an inductor L3;
a pin 5 of the integrated circuit U7 is connected with a pin 20, one end of a resistor R41, one end of a capacitor C18, one end of a capacitor C39, one end of a capacitor C40, one end of a capacitor C44 and one end of a capacitor C45, the other end of the resistor R41 is connected with an output end of the AC-DC conversion circuit, and the other end of the capacitor C18, the other end of a capacitor C39, the other end of the capacitor C40, the other end of the capacitor C44 and the other end of the capacitor C45 are grounded;
a pin 16 of the integrated circuit U7 is connected with one end of a capacitor C35, a pin 6 of the integrated circuit U7 is connected with a pin 19, the other end of the capacitor C35 and one end of an inductor L3, and the other end of the inductor L3 is respectively connected with one end of a capacitor C38, one end of a capacitor C46, one end of a capacitor C47, one end of a capacitor C48, one end of a capacitor C49, one end of a capacitor C50 and a pin 13 of the integrated circuit U7 for connecting a battery; the other end of the capacitor C38, the other end of the capacitor C46, the other end of the capacitor C47, the other end of the capacitor C48, the other end of the capacitor C49 and the other end of the capacitor C50 are grounded;
a pin 19 of the integrated circuit U7 is connected with one end of a resistor R45, the other end of the resistor R45 is connected with one end of a capacitor C55, and the other end of the capacitor C55 is grounded;
the pin 22 of the integrated circuit U7 is connected with one end of a capacitor C51, and the other end of the capacitor C51 is grounded;
the pin 30 of the integrated circuit U7 is connected with one end of a capacitor C53, and the other end of the capacitor C53 is grounded;
the pin 32 of the integrated circuit U7 is connected with one end of a capacitor C52, and the other end of the capacitor C52 is grounded;
the pin 21 of the integrated circuit U7 is connected with one end of a capacitor C57 and the cathode of a diode D8, the other end of the capacitor C57 is grounded, and the anode of the diode D8 is connected with an IC for power supply;
the pin 26 of the integrated circuit U7 is connected with one end of a resistor R51, and the other end of the resistor R51, the pin 25 of the integrated circuit U7, the pin 18, the pin 17, the pin 7, the pin 8 and the pin 9 are grounded;
the pin 23 of the integrated circuit U7 is connected to one end of a capacitor C58 and one end of a resistor R47, the other end of the capacitor C58 is grounded, and the other end of the resistor R47 is connected to a protocol conversion circuit.
Optionally, the protocol conversion circuit includes an integrated circuit U81, a field-effect transistor Q1, a field-effect transistor Q2, a field-effect transistor Q3, a capacitor C81, a capacitor C82, a capacitor C83, a capacitor C84, a capacitor C85, a capacitor C86, a capacitor C87, a capacitor C88, a capacitor C89, a capacitor C90, a capacitor C91, a resistor R81, a resistor R82, a resistor R83, a resistor R84, a resistor R86, a resistor R87, a resistor R88, an electrostatic protection ESD6, and a jumper terminal J81;
a pin 32 of the integrated circuit U81 is connected with a pin 1 of an electrostatic protector ESD6 and one end of a capacitor C81 and is connected with a direct-current power supply, and a pin 2 of the electrostatic protector ESD6 and the other end of the capacitor C81 are grounded;
the pin 28 of the integrated circuit U81 is connected with one end of a resistor R81 and a capacitor C82, and the other end of the capacitor C82 is grounded;
the pin 27, the pin 26, the pin 24, the pin 25, the pin 4 and the pin 3 of the integrated circuit U81 are respectively connected with one end of a capacitor C83, one end of a capacitor C84, one end of a capacitor C88, one end of a capacitor C89, one end of a capacitor C85 and one end of a capacitor C86, and the other end of the capacitor C83, the other end of the capacitor C84, the other end of the capacitor C88, the other end of the capacitor C89, the other end of the capacitor C85 and the other end of the capacitor C86 are grounded;
the pin 5, the pin 11 and the pin 12 of the integrated circuit U81 are respectively connected with one end of a resistor R84, one end of a resistor R83 and one end of a resistor R82; the other end of the resistor R84 is grounded; one end of the resistor R83 and one end of the resistor R82 are respectively connected with a pin 5 and a pin 4 of an overline terminal J81, the other end of the resistor R83, the other end of the resistor R82 and one end of the resistor R88 are connected with an MCU (microprogrammed control unit) logic circuit, a pin 2 of the overline terminal J81 is connected with a pin 13 of an integrated circuit U81, a pin 1 of the overline terminal J81 is connected with a pin 3 of an integrated circuit U81, and a pin 3 of the overline terminal J81 is grounded;
the pin 20 and the pin 21 of the integrated circuit U81 are respectively connected with one end of a capacitor C90 and one end of a capacitor C91, and the other end of the capacitor C90 and the other end of the capacitor C91 are grounded with the pin 33 and the pin 2 of the integrated circuit U81.
Optionally, the MCU logic circuit includes an integrated circuit U1, a resistor R31, a resistor R32, a resistor R35, and a cross-line terminal J1;
a pin 8, a pin 15 and a pin 9 of the integrated circuit U1 are respectively connected with one end of a resistor R31, one end of a resistor R32 and one end of a resistor R35, and a pin 6 of the integrated circuit U1 is connected with a pin 2 of a field effect transistor Q2 and one end of a resistor R87; pin 16 of integrated circuit U1 is connected with the other end of resistance R47 and pin 2 of overline terminal J1, pin 4 of integrated circuit U1 is connected with pin 1 of overline terminal J1, pin 4 of overline terminal J1 is connected with the other end of resistance R83 and the other end of resistance R31, pin 5 is connected with the other end of resistance R82 and the other end of resistance R32, the other end of resistance R35 is connected with pin 12 of integrated circuit U7, pin 1 of integrated circuit U1 and pin 3 of overline terminal J1 are grounded.
Optionally, the Type-C interface module includes a jumper JP1, a jumper JP2, and a jumper JP 4;
Optionally, the device further comprises an MCU detection circuit, a voltage protection circuit, an electrostatic protection circuit and a battery protection circuit; the MCU detection circuit is connected with the MCU logic circuit, the voltage protection circuit is connected with the AC-DC conversion circuit and the DC-DC conversion circuit, the electrostatic protection circuit is respectively connected with the AC-DC conversion circuit, the DC-DC conversion circuit, the protocol conversion circuit and the MCU logic circuit, and the battery protection circuit is connected with the DC-DC conversion circuit and the battery.
Optionally, the battery protection circuit includes an integrated circuit U5, a field effect transistor Q5, a field effect transistor Q6, a resistor R17, a resistor R21, and a capacitor C26;
a pin 5 of the integrated circuit U5 is connected with one end of a resistor R21 and one end of a capacitor C26, a pin 6 of the integrated circuit U5 is connected with a pin 1 and a pin 2 of a field effect transistor Q5 and the other end of a capacitor C26, a pin 1 and a pin 3 of the integrated circuit U5 are respectively connected with a pin 3 of the field effect transistor Q5 and a pin 4 of the field effect transistor Q6, a pin 2 of the integrated circuit U5 is connected with one end of the resistor R17, and the other end of the resistor R21 is connected with a DC-DC conversion circuit;
and the pin 5 and the pin 6 of the field effect transistor Q6 are grounded with the other end of the resistor R17.
Optionally, the MCU logic circuit is provided with a monitoring module and an evaluation module, the monitoring module is configured to detect the working state of each node in the DC-DC conversion circuit or the protocol conversion circuit, and the evaluation module calculates the state index of the DC-DC conversion circuit or the protocol conversion circuit by using the following formula:
in the above equation, γ represents a state index of the DC-DC conversion circuit or the protocol conversion circuit; epsilon represents the detection precision; n represents the number of nodes of the DC-DC conversion circuit or the protocol conversion circuit; wiThe method comprises the steps of representing the assignment of a working state at a node i in a DC-DC conversion circuit or a protocol conversion circuit, wherein the assignment range is (0, 1);
and taking the calculation result as reliability evaluation, and if the state index is lower than a reliability threshold value, initializing each node in the DC-DC conversion circuit or the protocol conversion circuit.
Optionally, the evaluation module calculates the circuit losses of all the circuits by using the following formula:
in the above formula, Q represents a circuit loss of the circuit; m represents the number of circuits detected; n represents the number of nodes of circuit j; f. ofijRepresents the loss function of node i of circuit j; i isijRepresents the current at node i of circuit j;
and if the calculated result reaches the loss threshold value, adjusting the charging strategy through the MCU logic circuit.
According to the bidirectional fast charging and fast discharging two-in-one power supply, the Type-C interface module has an input fast charging function without additionally adding other circuits, and bidirectional mode conversion of fast input charging when the Type-C interface module is used for input and fast discharging when the Type-C interface module is used for output is realized through the MCU logic control protocol IC; and meanwhile, the USB-A interface module can charge the external equipment at the same time when the Type-C interface module is used for inputting, and the AC input and Type-C interface module input priority processing mode eliminates the potential safety hazard of the battery caused by the simultaneous input of the AC and Type-C interface modules.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a bidirectional fast charging and discharging two-in-one power supply according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an AC-DC conversion circuit employed in an embodiment of the bidirectional fast charging and discharging two-in-one power supply of the present invention;
FIG. 3 is a schematic diagram of a DC-DC conversion circuit employed in an embodiment of the bidirectional fast charging and discharging two-in-one power supply of the present invention;
FIG. 4 is a schematic diagram of a protocol conversion circuit employed in an embodiment of the bidirectional fast charging and discharging two-in-one power supply of the present invention;
FIG. 5 is a schematic diagram of an MCU logic circuit employed in an embodiment of the bidirectional fast charging and fast discharging two-in-one power supply of the present invention;
FIG. 6 is a schematic diagram of a Type-C interface module adopted in an embodiment of the bidirectional fast charging and discharging two-in-one power supply of the invention;
FIG. 7 is a schematic diagram of an MCU detection circuit employed in an embodiment of the bidirectional fast charging and discharging two-in-one power supply of the present invention;
FIG. 8 is a schematic diagram of a voltage protection circuit employed in an embodiment of the bidirectional fast charging and discharging two-in-one power supply of the present invention;
FIG. 9 is a schematic diagram of an ESD protection circuit according to an embodiment of the dual-direction fast charging/discharging two-in-one power supply of the present invention;
fig. 10 is a schematic diagram of a battery protection circuit adopted in an embodiment of the bidirectional fast charging and fast discharging two-in-one power supply of the invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1, an embodiment of the present invention provides a bidirectional fast charging and fast discharging two-in-one power supply, which includes an AC-DC conversion circuit, a DC-DC conversion circuit, a protocol conversion circuit, an MCU logic circuit, a battery, a USB-a interface module, and a Type-C interface module;
the AC-DC conversion circuit converts the input alternating current into stable direct current and outputs the stable direct current to the DC-DC conversion circuit;
the DC-DC conversion circuit is respectively connected with the MCU logic circuit, the protocol conversion circuit, the battery and the USB-A interface module;
the protocol conversion circuit is respectively connected with the MCU logic circuit and the Type-C interface module;
the logic control protocol of the MCU logic circuit realizes the bidirectional mode conversion of the Type-C interface module, namely the Type-C interface module is charged as input fast input, and the Type-C interface module is discharged fast as output.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the input quick charging function of the Type-C interface module does not need to additionally add other circuits, and bidirectional mode conversion of quick input charging when the Type-C interface module is used for input and quick discharge when the Type-C interface module is used for output is realized through an MCU logic control protocol IC; and meanwhile, the USB-A interface module can charge the external equipment at the same time when the Type-C interface module is used for inputting, and the AC input and Type-C interface module input priority processing mode eliminates the potential safety hazard of the battery caused by the simultaneous input of the AC and Type-C interface modules.
In one embodiment, as shown in fig. 2, the AC-DC conversion circuit includes a bridge circuit BD1, an inductor LF1, a transformer T1, a resistor R105, a resistor R106, a resistor R107, a resistor R108, a resistor R109, a resistor R110, a resistor R111, a resistor R112, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a resistor R119, a resistor R120, a resistor R121, a resistor R122, a resistor R123, a resistor R125, a resistor R126, a capacitor C100, a capacitor C101, a capacitor C100, a capacitor C102, a capacitor C103, a capacitor C104, a capacitor C105, a capacitor C106, a capacitor C107, a capacitor C108, a capacitor C109, a capacitor C110, a capacitor C111, a diode D100, a diode D101, a diode D102, a diode D103, a diode D104, a fet Q100, an integrated circuit U9, an integrated circuit U100, and a zener diode U100;
the pin 3 of the transformer T1 is respectively connected with one end of a resistor R116, one end of a resistor R118 and the anode of a diode D102, the other end of the resistor R118 is connected with one end of a capacitor C103, the cathode of the diode D102 is connected with the other end of the capacitor C103 and one end of a resistor R117, the other end of the resistor R117 is respectively connected with one end of a capacitor C104, one end of a capacitor C105, one end of a resistor R106 and the pin 5 of an integrated circuit U9, the other end of the resistor R106 is connected with the pin 3 of a bridge circuit BD1 through a resistor R100, the other end of the resistor R116 is connected with the pin 3 of the integrated circuit U9 and the anode of the diode D103, and the cathode of the diode D103 is connected with one end of a resistor R119; a pin 4 of the transformer T1 is respectively connected with the other end of a resistor R119, the other end of a capacitor C104, the other end of a capacitor C105, a pin 1 of an integrated circuit U9, one end of a capacitor C106, one end of a capacitor C107, one end of a resistor R114, one end of a resistor R115 and a pin 3 of a photoelectric coupler U101, a pin 4 of the photoelectric coupler U101 is connected with the other end of the capacitor C106 and a pin 2 of the integrated circuit U9, the other end of the capacitor C107 is connected with the pin 4 of the integrated circuit U9 and one end of a resistor R113, the other end of the resistor R113 is connected with the other end of the resistor R114, the other end of the resistor R115, one end of the resistor R112 and the pin 3 of the field-effect transistor Q100, the other end of the resistor R112, one end of the resistor R111, the anode of the diode D101 and the pin 1 of the field-effect transistor Q100, the other end of the resistor R111 is connected with the cathode of the, pin 2 of the field effect transistor Q100 is connected with pin 2 of the transformer T1;
The working principle and the beneficial effects of the technical scheme are as follows: the AC-DC conversion circuit of the present solution, such as the topology circuit of fig. 2, is used for battery charging and AC-DC output terminal equipment, and its operation principle is: a. when the power supply main control IC is conducted in cooperation with the switch MOS tube Q100, the induction voltage of the primary winding of the high-frequency transformer T1 is positive at the top and negative at the bottom, the induction voltage of the secondary winding is positive at the top and negative at the bottom, the synchronous rectification MOS tube Q100 is in a cut-off state, and energy is stored in the primary winding at the moment; b. when the switching MOS transistor Q100 is turned off, since the inductor current cannot change abruptly, the induced voltage of the primary winding of the high-frequency transformer T1 is positive, negative, and positive, and the induced voltage of the secondary winding is positive, negative, and positive; the energy stored in the primary winding of the transformer T1 is filtered by the secondary winding, the synchronous rectification D104 and the secondary solid-state capacitor to provide stable AC _ OUT output to the back-end circuit; wherein integrated circuit U9 may employ OB 2633.
In one embodiment, as shown in fig. 3, the DC-DC conversion circuit includes an integrated circuit U7, a resistor R41, a resistor R45, a resistor R47, a resistor R51, a capacitor C18, a capacitor C35, a capacitor C38, a capacitor C39, a capacitor C40, a capacitor C44, a capacitor C45, a capacitor C46, a capacitor C47, a capacitor C48, a capacitor C49, a capacitor C50, a capacitor C51, a capacitor C52, a capacitor C53, a capacitor C55, a capacitor C57, a capacitor C58, a diode D8, and an inductor L3;
a pin 5 of the integrated circuit U7 is connected with a pin 20, one end of a resistor R41, one end of a capacitor C18, one end of a capacitor C39, one end of a capacitor C40, one end of a capacitor C44 and one end of a capacitor C45, the other end of the resistor R41 is connected with an output end of the AC-DC conversion circuit, and the other end of the capacitor C18, the other end of a capacitor C39, the other end of the capacitor C40, the other end of the capacitor C44 and the other end of the capacitor C45 are grounded;
a pin 16 of the integrated circuit U7 is connected with one end of a capacitor C35, a pin 6 of the integrated circuit U7 is connected with a pin 19, the other end of the capacitor C35 and one end of an inductor L3, and the other end of the inductor L3 is respectively connected with one end of a capacitor C38, one end of a capacitor C46, one end of a capacitor C47, one end of a capacitor C48, one end of a capacitor C49, one end of a capacitor C50 and a pin 13 of the integrated circuit U7 for connecting a battery; the other end of the capacitor C38, the other end of the capacitor C46, the other end of the capacitor C47, the other end of the capacitor C48, the other end of the capacitor C49 and the other end of the capacitor C50 are grounded;
a pin 19 of the integrated circuit U7 is connected with one end of a resistor R45, the other end of the resistor R45 is connected with one end of a capacitor C55, and the other end of the capacitor C55 is grounded;
the pin 22 of the integrated circuit U7 is connected with one end of a capacitor C51, and the other end of the capacitor C51 is grounded;
the pin 30 of the integrated circuit U7 is connected with one end of a capacitor C53, and the other end of the capacitor C53 is grounded;
the pin 32 of the integrated circuit U7 is connected with one end of a capacitor C52, and the other end of the capacitor C52 is grounded;
the pin 21 of the integrated circuit U7 is connected with one end of a capacitor C57 and the cathode of a diode D8, the other end of the capacitor C57 is grounded, and the anode of the diode D8 is connected with an IC for power supply;
the pin 26 of the integrated circuit U7 is connected with one end of a resistor R51, and the other end of the resistor R51, the pin 25 of the integrated circuit U7, the pin 18, the pin 17, the pin 7, the pin 8 and the pin 9 are grounded;
the pin 23 of the integrated circuit U7 is connected to one end of a capacitor C58 and one end of a resistor R47, the other end of the capacitor C58 is grounded, and the other end of the resistor R47 is connected to a protocol conversion circuit.
The working principle and the beneficial effects of the technical scheme are as follows: when the DC-DC conversion circuit works in a charging mode, if 5V-12V input voltage enters through VBUS, the input voltage is converted into electric core charging voltage through a built-in Buck circuit and an L3 of U7, and when the DC-DC conversion circuit works in a discharging mode, the battery is converted into 5V-12V output through a built-in Boost circuit and an L3 of U7, so that the conversion between the charging mode and the discharging mode can be automatically realized; wherein the integrated circuit U7 may employ SC8933 QFER.
In one embodiment, as shown in fig. 4, the protocol conversion circuit includes an integrated circuit U81, a fet Q1, a fet Q2, a fet Q3, a capacitor C81, a capacitor C82, a capacitor C83, a capacitor C84, a capacitor C85, a capacitor C86, a capacitor C87, a capacitor C88, a capacitor C89, a capacitor C90, a capacitor C91, a resistor R81, a resistor R82, a resistor R83, a resistor R84, a resistor R86, a resistor R87, a resistor R88, an electrostatic protector ESD6, and a jumper J81;
a pin 32 of the integrated circuit U81 is connected with a pin 1 of an electrostatic protector ESD6 and one end of a capacitor C81 and is connected with a direct-current power supply, and a pin 2 of the electrostatic protector ESD6 and the other end of the capacitor C81 are grounded;
the pin 28 of the integrated circuit U81 is connected with one end of a resistor R81 and a capacitor C82, and the other end of the capacitor C82 is grounded;
the pin 27, the pin 26, the pin 24, the pin 25, the pin 4 and the pin 3 of the integrated circuit U81 are respectively connected with one end of a capacitor C83, one end of a capacitor C84, one end of a capacitor C88, one end of a capacitor C89, one end of a capacitor C85 and one end of a capacitor C86, and the other end of the capacitor C83, the other end of the capacitor C84, the other end of the capacitor C88, the other end of the capacitor C89, the other end of the capacitor C85 and the other end of the capacitor C86 are grounded;
the pin 5, the pin 11 and the pin 12 of the integrated circuit U81 are respectively connected with one end of a resistor R84, one end of a resistor R83 and one end of a resistor R82; the other end of the resistor R84 is grounded; one end of the resistor R83 and one end of the resistor R82 are respectively connected with a pin 5 and a pin 4 of an overline terminal J81, the other end of the resistor R83, the other end of the resistor R82 and one end of the resistor R88 are connected with an MCU (microprogrammed control unit) logic circuit, a pin 2 of the overline terminal J81 is connected with a pin 13 of an integrated circuit U81, a pin 1 of the overline terminal J81 is connected with a pin 3 of an integrated circuit U81, and a pin 3 of the overline terminal J81 is grounded;
the pin 20 and the pin 21 of the integrated circuit U81 are respectively connected with one end of a capacitor C90 and one end of a capacitor C91, and the other end of the capacitor C90 and the other end of the capacitor C91 are grounded with the pin 33 and the pin 2 of the integrated circuit U81.
The working principle and the beneficial effects of the technical scheme are as follows: the protocol conversion circuit of the scheme is also a protocol communication conversion circuit, and the integrated circuit U81 can adopt SC 2003; when a user terminal device is inserted, the output or input, namely the charging/discharging state, is judged through the U81 protocol communication; u81 automatic judgement Type-C fills soon/fills the agreement soon to agreement communication confirms that Type-C interface module work in quick charge or the mode of discharging fast, realizes the intelligent switching of filling/putting.
In one embodiment, as shown in fig. 5, the MCU logic circuit includes an integrated circuit U1, a resistor R31, a resistor R32, a resistor R35, and a flying lead terminal J1;
a pin 8, a pin 15 and a pin 9 of the integrated circuit U1 are respectively connected with one end of a resistor R31, one end of a resistor R32 and one end of a resistor R35, and a pin 6 of the integrated circuit U1 is connected with a pin 2 of a field effect transistor Q2 and one end of a resistor R87; pin 16 of integrated circuit U1 is connected with the other end of resistance R47 and pin 2 of overline terminal J1, pin 4 of integrated circuit U1 is connected with pin 1 of overline terminal J1, pin 4 of overline terminal J1 is connected with the other end of resistance R83 and the other end of resistance R31, pin 5 is connected with the other end of resistance R82 and the other end of resistance R32, the other end of resistance R35 is connected with pin 12 of integrated circuit U7, pin 1 of integrated circuit U1 and pin 3 of overline terminal J1 are grounded.
The working principle and the beneficial effects of the technical scheme are as follows: the MCU logic circuit of the scheme is under MCU logic control, controls the logic sequence of the whole machine, and controls the conversion between DC-DC IC U7 input/output, so that the battery can be quickly charged when Type-C is used for inputting and the user terminal can be quickly charged when the Type-C is used for outputting under the condition that the AC end is used for inputting and quickly charging. Input-output intelligent switching, wherein the integrated circuit U1 may employ ES7P 1608; and the MCU logic circuit is used for carrying out logic operation to realize the control of the charging mode and the strategy.
In one embodiment, as shown in fig. 6, the Type-C interface module includes a jumper JP1, a jumper JP2, and a jumper JP 4;
pin 3 and pin 4 of the jumper JP1 are connected with pin 27 and pin 26 of an integrated circuit U81, pin 8 and pin 9 of the jumper JP1 are connected with pin 25 of the integrated circuit U81, pin 10 and pin 11 of the jumper JP1 are connected with pin 24 of the integrated circuit U81, pin 5, pin 6 and pin 7 of the jumper JP1 are connected with one end of a resistor R43 and one end of a resistor R44, the other end of the resistor R43 is connected with one end of a capacitor C67 and pin 3 of the jumper JP4, and the other end of the resistor R44 and the other end of the capacitor C67 are grounded; pin 13 and pin 12 of the jumper JP1 are connected with pin 5, pin 6, pin 7, pin 8 of a fet Q7 and one end of a capacitor C37, pin 1, pin 2, pin 3 and pin 4 of the fet Q7 are connected with pin 1, pin 2, pin 3 and pin 4 of a fet Q8 respectively, pin 5, pin 6, pin 7 and pin 8 of the fet Q8 are connected with one end of a capacitor C36 and one end of a resistor R85, pin 4 of the fet Q8 is connected with one end of a resistor R18, the other end of the resistor R18 is connected with pin 29 of an integrated circuit U81, the other end of the resistor R85 is connected with an output of an AC-DC conversion circuit, and the other end of the capacitor C37 and the other end of the capacitor C36 are grounded;
The working principle and the beneficial effects of the technical scheme are as follows: the Type-C interface module of the scheme is that a USB _ A port/TYPE _ C port double port controls output logic through MOS Q7, Q8, Q9 and Q10; when this scheme Type-C does the fill soon, discharge function is supported to USB _ A mouth, for example: when 12V quick charging input is carried out by Type-C, equipment insertion at the port A is detected, the MCU judges the insertion of the port A through the USB _ A port, modifies a Type-C quick charging protocol through U81, converts the protocol into 5V common charging, and then opens Q9Q 10 to supply power to the USB _ A port, so that the aim of protecting user equipment from being damaged by high voltage is fulfilled; AC charges and Type-C fills input priority protect function simultaneously soon, when AC charges and Type-C fills when going on simultaneously soon, MCU meeting preferred selection AC charges, disconnection MOS Q7 and Q8 close Type-C input function, eliminate AC and Type-C and do the potential safety hazard of input to the battery simultaneously.
In one embodiment, as shown in fig. 7-10, further comprises an MCU detection circuit, a voltage protection circuit, an electrostatic protection circuit, and a battery protection circuit; the MCU detection circuit is connected with the MCU logic circuit, the voltage protection circuit is connected with the AC-DC conversion circuit and the DC-DC conversion circuit, the electrostatic protection circuit is respectively connected with the AC-DC conversion circuit, the DC-DC conversion circuit, the protocol conversion circuit and the MCU logic circuit, and the battery protection circuit is connected with the DC-DC conversion circuit and the battery;
the battery protection circuit comprises an integrated circuit U5, a field effect transistor Q5, a field effect transistor Q6, a resistor R17, a resistor R21 and a capacitor C26;
a pin 5 of the integrated circuit U5 is connected with one end of a resistor R21 and one end of a capacitor C26, a pin 6 of the integrated circuit U5 is connected with a pin 1 and a pin 2 of a field effect transistor Q5 and the other end of a capacitor C26, a pin 1 and a pin 3 of the integrated circuit U5 are respectively connected with a pin 3 of the field effect transistor Q5 and a pin 4 of the field effect transistor Q6, a pin 2 of the integrated circuit U5 is connected with one end of the resistor R17, and the other end of the resistor R21 is connected with a DC-DC conversion circuit;
and the pin 5 and the pin 6 of the field effect transistor Q6 are grounded with the other end of the resistor R17.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the MCU detection circuit, the voltage protection circuit, the electrostatic protection circuit and the battery protection circuit are arranged, the MCU detection circuit is used for detecting the MCU logic circuit, and the voltage protection circuit is used for providing safe and reliable voltage guarantee; static electricity is eliminated by the static electricity protection circuit, static electricity interference is prevented, and the service life of the battery protection circuit is prolonged; the power supply can meet the use requirements of different occasions, and is safe, reliable and durable.
In one embodiment, the MCU logic circuit is provided with a monitoring module and an evaluation module, the monitoring module is configured to detect the operating state of each node in the DC-DC conversion circuit or the protocol conversion circuit, and the evaluation module calculates the state index of the DC-DC conversion circuit or the protocol conversion circuit by using the following formula:
in the above equation, γ represents a state index of the DC-DC conversion circuit or the protocol conversion circuit; epsilon represents detection precision and is preset; n represents the number of nodes of the DC-DC conversion circuit or the protocol conversion circuit; wiThe method comprises the steps of representing the assignment of a working state at a node i in a DC-DC conversion circuit or a protocol conversion circuit, wherein the assignment range is (0, 1);
and taking the calculation result as reliability evaluation, and if the state index is lower than a reliability threshold value, initializing each node in the DC-DC conversion circuit or the protocol conversion circuit.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the monitoring module and the evaluation module are arranged on the MCU logic circuit, the monitoring module is used for detecting each node in the circuit, the evaluation module is used for carrying out operation analysis on the electric detection condition, the reliability of the circuit is evaluated, and if the reliability is found to be low, each node in the circuit is initialized for using safety and protecting a power supply; therefore, the adverse effect of unstable factors caused by long-time use of the power supply at times can be avoided, and the reliability of the use of the power supply can be improved.
In one embodiment, the evaluation module calculates the circuit losses for all circuits using the following formula:
in the above formula, Q represents a circuit loss of the circuit; m represents the number of circuits detected; n represents the number of nodes of circuit j; f. ofijRepresents the loss function of node i of circuit j; i isijRepresents the current at node i of circuit j;
and if the calculated result reaches the loss threshold value, adjusting the charging strategy through the MCU logic circuit.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the circuit loss is evaluated, and if the circuit loss is found to be high, the charging strategy is adjusted to improve the working efficiency; therefore, the problem of low efficiency of power supply use caused by adverse factors can be avoided, and the high efficiency of the power supply is maintained.
Aiming at the wall-plugged mobile power supply, the invention adds the function of inputting quick charge from Type-C under the condition that the wall-plugged mobile power supply inputs quick charge from an AC end. The user can also input quick charge from Type-C with the quick charge adapter under the inconvenient circumstances of use of other restrictions of AC socket. The Type-C input quick charging function does not need to additionally increase other circuits, the Type-C input quick charging is realized through the MCU logic control protocol IC, the Type-C input quick discharging and the bidirectional mode conversion are realized. And simultaneously, when the C port is used for inputting, the A port can be charged by external equipment at the same time, and the AC is used for inputting, and the Type-C input priority processing mode is adopted, so that the potential safety hazard of the battery caused by the simultaneous input of the AC and the Type-C is eliminated. The mobile power supply can be charged through the AC socket, and can also be charged through the Type-C bidirectional mobile power supply with the quick charging and quick discharging functions; when the Type-C is in quick charge, the USB _ A port can discharge; when the Type-C is charged quickly, the USB _ A port is detected intelligently, when the USB _ A has an inserted device, the Type-C charging voltage is reduced automatically, and then the USB _ A discharging protection logic is opened; AC charges and Type-C fills soon and inputs priority protect function simultaneously, and the preferred AC of intelligence charges, and disconnection Type-C inputs, eliminates AC and Type-C and does the potential safety hazard of input to the battery simultaneously.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A bidirectional fast charging and fast discharging two-in-one power supply is characterized by comprising an AC-DC conversion circuit, a DC-DC conversion circuit, a protocol conversion circuit, an MCU logic circuit, a battery, a USB-A interface module and a Type-C interface module;
the AC-DC conversion circuit converts the input alternating current into stable direct current and outputs the stable direct current to the DC-DC conversion circuit;
the DC-DC conversion circuit is respectively connected with the MCU logic circuit, the protocol conversion circuit, the battery and the USB-A interface module;
the protocol conversion circuit is respectively connected with the MCU logic circuit and the Type-C interface module;
the logic control protocol of the MCU logic circuit realizes the bidirectional mode conversion of the Type-C interface module, namely the Type-C interface module is charged as input fast input, and the Type-C interface module is discharged fast as output.
2. The two-way fast charging and discharging two-in-one power supply of claim 1, the AC-DC conversion circuit comprises a bridge circuit BD1, an inductor LF1, a transformer T1, a resistor R105, a resistor R106, a resistor R107, a resistor R108, a resistor R109, a resistor R110, a resistor R111, a resistor R112, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a resistor R119, a resistor R120, a resistor R121, a resistor R122, a resistor R123, a resistor R125, a resistor R126, a capacitor C100, a capacitor C101, a capacitor C100, a capacitor C102, a capacitor C103, a capacitor C104, a capacitor C105, a capacitor C106, a capacitor C107, a capacitor C108, a capacitor C109, a capacitor C110, a capacitor C111, a diode D100, a diode D101, a diode D102, a diode D103, a diode D104, a field effect transistor Q100, an integrated circuit U9, a U101 and a photo-;
pins 1 and 2 of the bridge circuit BD1 are connected to a power supply, pin 3 of the bridge circuit BD1 is connected to pin 2 of an inductor LF1, pin 4 of the bridge circuit BD1 is connected to pin 1 of an inductor LF1, the capacitor C100 is connected in parallel with pins 1 and 2 of an inductor LF1, pins 3 and 4 of the inductor LF1 are connected in parallel with a capacitor C101 and a capacitor C112, pin 3 of the inductor LF1 is connected to one end of a resistor R107, one end of a resistor R108, one end of a capacitor C102 and pin 1 of a transformer T1, the other end of the resistor R107 is connected to the other end of the resistor R108, one end of the resistor R109 and one end of the resistor R110, the other end of the resistor R109 is connected to the other end of the resistor R110 and the cathode of a diode D100, and the anode of the diode D100 is connected to pin 2 of a transformer T1;
the pin 3 of the transformer T1 is respectively connected with one end of a resistor R116, one end of a resistor R118 and the anode of a diode D102, the other end of the resistor R118 is connected with one end of a capacitor C103, the cathode of the diode D102 is connected with the other end of the capacitor C103 and one end of a resistor R117, the other end of the resistor R117 is respectively connected with one end of a capacitor C104, one end of a capacitor C105, one end of a resistor R106 and the pin 5 of an integrated circuit U9, the other end of the resistor R106 is connected with the pin 3 of a bridge circuit BD1 through a resistor R100, the other end of the resistor R116 is connected with the pin 3 of the integrated circuit U9 and the anode of the diode D103, and the cathode of the diode D103 is connected with one end of a resistor R119; a pin 4 of the transformer T1 is respectively connected with the other end of a resistor R119, the other end of a capacitor C104, the other end of a capacitor C105, a pin 1 of an integrated circuit U9, one end of a capacitor C106, one end of a capacitor C107, one end of a resistor R114, one end of a resistor R115 and a pin 3 of a photoelectric coupler U101, a pin 4 of the photoelectric coupler U101 is connected with the other end of the capacitor C106 and a pin 2 of the integrated circuit U9, the other end of the capacitor C107 is connected with the pin 4 of the integrated circuit U9 and one end of a resistor R113, the other end of the resistor R113 is connected with the other end of the resistor R114, the other end of the resistor R115, one end of the resistor R112 and the pin 3 of the field-effect transistor Q100, the other end of the resistor R112, one end of the resistor R111, the anode of the diode D101 and the pin 1 of the field-effect transistor Q100, the other end of the resistor R111 is connected with the cathode of the, pin 2 of the field effect transistor Q100 is connected with pin 2 of the transformer T1;
pin 7 of the transformer T1 is connected to one end of a resistor R120 and the cathode of a diode D104, the other end of the resistor R120 is connected with one end of a capacitor C108, the other end of the capacitor C108 is connected with the anode of the diode D104, one end of a capacitor C109 and one end of a capacitor C110, the pin 8 of the transformer T1 is connected to the other end of the capacitor C109, the other end of the capacitor C110, one end of the resistor R121 and one end of the resistor R122, the other end of the resistor R121 is connected with one end of the resistor R123 and the pin 1 of the photocoupler U101, the other end of the resistor R122 is connected with one end of a resistor R125, one end of a resistor R126 and the MCU logic circuit, the pin 2 of the photoelectric coupler U101 is connected with the other end of the resistor R123, the cathode of the voltage stabilizing diode U100 and one end of the capacitor C111, the other end of the capacitor C111 is connected to the other end of the resistor R125, and the other end of the resistor R126 is grounded to the anode of the zener diode U100.
3. The two-in-one power supply for bidirectional fast charging and fast discharging of claim 2, wherein the DC-DC conversion circuit comprises an integrated circuit U7, a resistor R41, a resistor R45, a resistor R47, a resistor R51, a capacitor C18, a capacitor C35, a capacitor C38, a capacitor C39, a capacitor C40, a capacitor C44, a capacitor C45, a capacitor C46, a capacitor C47, a capacitor C48, a capacitor C49, a capacitor C50, a capacitor C51, a capacitor C52, a capacitor C53, a capacitor C55, a capacitor C57, a capacitor C58, a diode D8 and an inductor L3;
a pin 5 of the integrated circuit U7 is connected with a pin 20, one end of a resistor R41, one end of a capacitor C18, one end of a capacitor C39, one end of a capacitor C40, one end of a capacitor C44 and one end of a capacitor C45, the other end of the resistor R41 is connected with an output end of the AC-DC conversion circuit, and the other end of the capacitor C18, the other end of a capacitor C39, the other end of the capacitor C40, the other end of the capacitor C44 and the other end of the capacitor C45 are grounded;
a pin 16 of the integrated circuit U7 is connected with one end of a capacitor C35, a pin 6 of the integrated circuit U7 is connected with a pin 19, the other end of the capacitor C35 and one end of an inductor L3, and the other end of the inductor L3 is respectively connected with one end of a capacitor C38, one end of a capacitor C46, one end of a capacitor C47, one end of a capacitor C48, one end of a capacitor C49, one end of a capacitor C50 and a pin 13 of the integrated circuit U7 for connecting a battery; the other end of the capacitor C38, the other end of the capacitor C46, the other end of the capacitor C47, the other end of the capacitor C48, the other end of the capacitor C49 and the other end of the capacitor C50 are grounded;
a pin 19 of the integrated circuit U7 is connected with one end of a resistor R45, the other end of the resistor R45 is connected with one end of a capacitor C55, and the other end of the capacitor C55 is grounded;
the pin 22 of the integrated circuit U7 is connected with one end of a capacitor C51, and the other end of the capacitor C51 is grounded;
the pin 30 of the integrated circuit U7 is connected with one end of a capacitor C53, and the other end of the capacitor C53 is grounded;
the pin 32 of the integrated circuit U7 is connected with one end of a capacitor C52, and the other end of the capacitor C52 is grounded;
the pin 21 of the integrated circuit U7 is connected with one end of a capacitor C57 and the cathode of a diode D8, the other end of the capacitor C57 is grounded, and the anode of the diode D8 is connected with an IC for power supply;
the pin 26 of the integrated circuit U7 is connected with one end of a resistor R51, and the other end of the resistor R51, the pin 25 of the integrated circuit U7, the pin 18, the pin 17, the pin 7, the pin 8 and the pin 9 are grounded;
the pin 23 of the integrated circuit U7 is connected to one end of a capacitor C58 and one end of a resistor R47, the other end of the capacitor C58 is grounded, and the other end of the resistor R47 is connected to a protocol conversion circuit.
4. The two-in-one power supply of the bidirectional fast charging and fast discharging of claim 3, wherein the protocol conversion circuit comprises an integrated circuit U81, a field effect transistor Q1, a field effect transistor Q2, a field effect transistor Q3, a capacitor C81, a capacitor C82, a capacitor C83, a capacitor C84, a capacitor C85, a capacitor C86, a capacitor C87, a capacitor C88, a capacitor C89, a capacitor C90, a capacitor C91, a resistor R81, a resistor R82, a resistor R83, a resistor R84, a resistor R86, a resistor R87, a resistor R88, an electrostatic protector ESD6 and a jumper terminal J81;
pin 6 of the integrated circuit U81 is connected with pin 2 and pin 3 of a field effect transistor Q1, pin 3 of the field effect transistor Q1 is connected with the other end of a resistor R122, one end of a resistor R125 and one end of a resistor R126, and pin 1 of the field effect transistor Q1 is connected with one end of a resistor R86; the other end of the resistor R86 is connected with a pin 7 of an integrated circuit U81;
a pin 32 of the integrated circuit U81 is connected with a pin 1 of an electrostatic protector ESD6 and one end of a capacitor C81 and is connected with a direct-current power supply, and a pin 2 of the electrostatic protector ESD6 and the other end of the capacitor C81 are grounded;
the pin 28 of the integrated circuit U81 is connected with one end of a resistor R81 and a capacitor C82, and the other end of the capacitor C82 is grounded;
the pin 27, the pin 26, the pin 24, the pin 25, the pin 4 and the pin 3 of the integrated circuit U81 are respectively connected with one end of a capacitor C83, one end of a capacitor C84, one end of a capacitor C88, one end of a capacitor C89, one end of a capacitor C85 and one end of a capacitor C86, and the other end of the capacitor C83, the other end of the capacitor C84, the other end of the capacitor C88, the other end of the capacitor C89, the other end of the capacitor C85 and the other end of the capacitor C86 are grounded;
pin 1 of the integrated circuit U81 is connected with one end of a capacitor C87 and pin 3 of a field effect transistor Q2, pin 2 of the field effect transistor Q2 is connected with one end of a resistor R87, pin 1 of the field effect transistor Q2 is connected with pin 3 of a field effect transistor Q3 and the other end of a resistor R87, pin 1 and pin 2 of the field effect transistor Q3 are respectively connected with one end and the other end of a resistor R88, and the other ends of the field effect transistor Q2 and the capacitor C87 are grounded;
the pin 5, the pin 11 and the pin 12 of the integrated circuit U81 are respectively connected with one end of a resistor R84, one end of a resistor R83 and one end of a resistor R82; the other end of the resistor R84 is grounded; one end of the resistor R83 and one end of the resistor R82 are respectively connected with a pin 5 and a pin 4 of an overline terminal J81, the other end of the resistor R83, the other end of the resistor R82 and one end of the resistor R88 are connected with an MCU (microprogrammed control unit) logic circuit, a pin 2 of the overline terminal J81 is connected with a pin 13 of an integrated circuit U81, a pin 1 of the overline terminal J81 is connected with a pin 3 of an integrated circuit U81, and a pin 3 of the overline terminal J81 is grounded;
the pin 20 and the pin 21 of the integrated circuit U81 are respectively connected with one end of a capacitor C90 and one end of a capacitor C91, and the other end of the capacitor C90 and the other end of the capacitor C91 are grounded with the pin 33 and the pin 2 of the integrated circuit U81.
5. The two-in-one power supply with bidirectional fast charging and fast discharging of claim 4, wherein the MCU logic circuit comprises an integrated circuit U1, a resistor R31, a resistor R32, a resistor R35 and a jumper terminal J1;
a pin 8, a pin 15 and a pin 9 of the integrated circuit U1 are respectively connected with one end of a resistor R31, one end of a resistor R32 and one end of a resistor R35, and a pin 6 of the integrated circuit U1 is connected with a pin 2 of a field effect transistor Q2 and one end of a resistor R87; pin 16 of integrated circuit U1 is connected with the other end of resistance R47 and pin 2 of overline terminal J1, pin 4 of integrated circuit U1 is connected with pin 1 of overline terminal J1, pin 4 of overline terminal J1 is connected with the other end of resistance R83 and the other end of resistance R31, pin 5 is connected with the other end of resistance R82 and the other end of resistance R32, the other end of resistance R35 is connected with pin 12 of integrated circuit U7, pin 1 of integrated circuit U1 and pin 3 of overline terminal J1 are grounded.
6. The two-way quick-charging and quick-discharging two-in-one power supply of claim 5, wherein the Type-C interface module comprises a jumper JP1, a jumper JP2 and a jumper JP 4;
pin 3 and pin 4 of the jumper JP1 are connected with pin 27 and pin 26 of an integrated circuit U81, pin 8 and pin 9 of the jumper JP1 are connected with pin 25 of the integrated circuit U81, pin 10 and pin 11 of the jumper JP1 are connected with pin 24 of the integrated circuit U81, pin 5, pin 6 and pin 7 of the jumper JP1 are connected with one end of a resistor R43 and one end of a resistor R44, the other end of the resistor R43 is connected with one end of a capacitor C67 and pin 3 of the jumper JP4, and the other end of the resistor R44 and the other end of the capacitor C67 are grounded; pin 13 and pin 12 of the jumper JP1 are connected with pin 5, pin 6, pin 7, pin 8 of a fet Q7 and one end of a capacitor C37, pin 1, pin 2, pin 3 and pin 4 of the fet Q7 are connected with pin 1, pin 2, pin 3 and pin 4 of a fet Q8 respectively, pin 5, pin 6, pin 7 and pin 8 of the fet Q8 are connected with one end of a capacitor C36 and one end of a resistor R85, pin 4 of the fet Q8 is connected with one end of a resistor R18, the other end of the resistor R18 is connected with pin 29 of an integrated circuit U81, the other end of the resistor R85 is connected with an output of an AC-DC conversion circuit, and the other end of the capacitor C37 and the other end of the capacitor C36 are grounded;
pin 2 and pin 3 of the jumper JP2 are connected with pin 1 and pin 2 of the jumper JP4, respectively; pin 1, pin 5, pin 6 and pin 7 of the jumper JP2 are connected with one end of a resistor R54 and one end of R55, the other end of the resistor R54 is connected with one end of a capacitor C66, and the other end of the resistor R55 and the other end of the capacitor C66 are grounded; pin 4 of the jumper JP2 is connected with pin 1 and pin 3 of a field effect transistor Q9 and one end of a capacitor C56, pin 2 and pin 5 of the field effect transistor Q9 are respectively connected with pin 1 and pin 3 of the field effect transistor Q10, pin 2 and pin 5 of the field effect transistor Q10 are connected with the anode of a zener diode ZR2 and the output of an AC-DC conversion circuit, the cathode of the zener diode ZR2 is connected with one end of a resistor R59, the other end of the resistor R59 is connected with pin 4 and pin 6 of the field effect transistor Q10 and the field effect transistor Q10 and pin 2 of an integrated circuit U7, and the other end of the capacitor C56 is grounded;
pin 4 and pin 5 of the jumper JP4 are connected with the other end of a resistor R83 and the other end of a resistor R82 respectively, pin 6 of the jumper JP4 is connected with pin 4 of a field effect transistor Q1, pin 7 of the jumper JP4 is connected with pin 3 of a field effect transistor Q1, and pin 8 of the jumper JP4 is connected with pin 6 of an integrated circuit U1.
7. The two-way quick charge and discharge two-in-one power supply according to claim 1, further comprising an MCU detection circuit, a voltage protection circuit, an electrostatic protection circuit and a battery protection circuit; the MCU detection circuit is connected with the MCU logic circuit, the voltage protection circuit is connected with the AC-DC conversion circuit and the DC-DC conversion circuit, the electrostatic protection circuit is respectively connected with the AC-DC conversion circuit, the DC-DC conversion circuit, the protocol conversion circuit and the MCU logic circuit, and the battery protection circuit is connected with the DC-DC conversion circuit and the battery.
8. The two-way power supply with fast charging and discharging functions as claimed in claim 7, wherein the battery protection circuit comprises an integrated circuit U5, a field effect transistor Q5, a field effect transistor Q6, a resistor R17, a resistor R21 and a capacitor C26;
a pin 5 of the integrated circuit U5 is connected with one end of a resistor R21 and one end of a capacitor C26, a pin 6 of the integrated circuit U5 is connected with a pin 1 and a pin 2 of a field effect transistor Q5 and the other end of a capacitor C26, a pin 1 and a pin 3 of the integrated circuit U5 are respectively connected with a pin 3 of the field effect transistor Q5 and a pin 4 of the field effect transistor Q6, a pin 2 of the integrated circuit U5 is connected with one end of the resistor R17, and the other end of the resistor R21 is connected with a DC-DC conversion circuit;
and the pin 5 and the pin 6 of the field effect transistor Q6 are grounded with the other end of the resistor R17.
9. The bidirectional fast charging and discharging two-in-one power supply according to claim 1, wherein the MCU logic circuit is provided with a monitoring module and an evaluation module, the monitoring module is configured to detect the operating state of each node in the DC-DC conversion circuit or the protocol conversion circuit, and the evaluation module calculates the state index of the DC-DC conversion circuit or the protocol conversion circuit by using the following formula:
in the above equation, γ represents a state index of the DC-DC conversion circuit or the protocol conversion circuit; epsilon represents the detection precision; n represents the number of nodes of the DC-DC conversion circuit or the protocol conversion circuit; wiThe method comprises the steps of representing the assignment of a working state at a node i in a DC-DC conversion circuit or a protocol conversion circuit, wherein the assignment range is (0, 1);
and taking the calculation result as reliability evaluation, and if the state index is lower than a reliability threshold value, initializing each node in the DC-DC conversion circuit or the protocol conversion circuit.
10. The two-way quick-charging and quick-discharging two-in-one power supply according to claim 9, wherein the evaluation module calculates the circuit loss of all circuits by using the following formula:
in the above formula, Q represents a circuit loss of the circuit; m represents the number of circuits detected; n represents the number of nodes of circuit j; f. ofijRepresents the loss function of node i of circuit j; i isijRepresents the current at node i of circuit j;
and if the calculated result reaches the loss threshold value, adjusting the charging strategy through the MCU logic circuit.
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