CN112366761A - Single-path double-USB-A port parallel type quick-charging mobile power supply - Google Patents
Single-path double-USB-A port parallel type quick-charging mobile power supply Download PDFInfo
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- CN112366761A CN112366761A CN202011054522.1A CN202011054522A CN112366761A CN 112366761 A CN112366761 A CN 112366761A CN 202011054522 A CN202011054522 A CN 202011054522A CN 112366761 A CN112366761 A CN 112366761A
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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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
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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
- H02J7/007—Regulation of charging or discharging current or voltage
Abstract
The invention discloses a single-path double-USB-A port parallel type quick charging mobile power supply which comprises a USB-A1 port, a USB-A2 port, a protocol IC chip U1, a protocol IC chip U2, a power tube Q1, a power tube Q2, a power tube Q3, a power tube Q4, a buck-boost IC chip U3 and an MCU chip U4, wherein a pin 1 of the USB-A1 port is connected with a pin 8 of the power tube Q3, a pin 2 and a pin 3 of the USB-A1 port are connected with a pin 6 and a pin 1 of the protocol IC chip U1, and a pin 4 of the USB-A1 port is connected with a pin 5 and a pin 2 of the power tube Q1. The single-path double-USB-A-port parallel type quick charging mobile power supply realizes immediate switching of the quick charging function, is convenient for users to use, greatly improves the user using satisfaction degree, and greatly improves the product competitiveness.
Description
Technical Field
The invention relates to the technical field of quick charging power supplies, in particular to a single-path double-USB-A-port parallel type quick charging mobile power supply.
Background
At present, there are many ways for a mobile power supply to implement a single-circuit control dual USB-a port output fast charging mode:
firstly, when the mobile power supply charges the watch, the current is very small, which may cause the mobile power supply to enter a light-load shutdown state from time to time, so the mobile power supply usually sets a timing time T for the USB-a port (the timing is started after the current is less than the light-load shutdown current of the mobile power supply, and the time T is reset when the software detects that the current value is greater than the light-load shutdown current value any time within the time T), and the USB-a port closes the output after the time T. The time T cannot be too short, and is generally set to 1-2 minutes, otherwise, the situation that the watch cannot be charged easily occurs;
secondly, in general, the mobile power supply outputs 5V/3A when the same path of double USB-A ports are simultaneously loaded;
thirdly, on the premise of the 1 st point and the 2 nd point, if the single circuit is required to control the double USB-A fast charging output, when a fast charging mobile phone is unplugged from the USB-A1 and plugged into the USB-A2, the mobile phone can enter the fast charging mode only by waiting for the time T.
An output mode:
(1) the double ports simultaneously output 5V with loads, and automatically enter a dormant state after T time under the condition of no load;
(2) the double ports simultaneously output 5V with loads, support a low current mode, and automatically enter a dormant state after T time under the condition of no load;
(3) one port outputs 5V, the other port outputs QC, the two ports output 5V with loads at the same time, a low current mode is supported, and the device automatically enters a sleep state after T time under the condition of no load;
(4) the dual ports can realize QC output, but can not be immediately switched to QC output when being unplugged from one port and inserted into the other port, waiting time T is needed, the dual ports only output 5V with loads at the same time, a low-current mode is supported, and the dual ports automatically enter a dormant state after T time under the condition of no load.
Disclosure of Invention
The invention aims to provide a single-path double-USB-A port parallel type quick charging mobile power supply, wherein both ports can realize QC output, and can be immediately switched to QC output when being unplugged from one port and plugged into the other port without waiting for time T, both ports simultaneously carry loads and output only 5V, a small current mode is supported, the mobile power supply automatically enters a dormant state after T time under the condition of no load, the quick charging function is immediately switched, the use by a user is facilitated, the use satisfaction of the user is greatly improved, the product competitiveness is greatly improved, and the problems in the prior art can be solved.
In order to achieve the purpose, the invention provides the following technical scheme: a single-path double-USB-A port parallel type quick charging mobile power supply comprises a USB-A1 port, a USB-A2 port, a protocol IC chip U1, a protocol IC chip U2, a power tube Q1, a power tube Q2, a power tube Q3, a power tube Q4, a buck-boost IC chip U3 and an MCU chip U4, wherein a pin 1 of the USB-A1 port is connected with a pin 8 of the power tube Q3, a pin 2 and a pin 3 of the USB-A1 port are connected with a pin 6 and a pin 1 of the protocol IC chip U1, and a pin 4 of the USB-A1 port is connected with a pin 5 and a pin 2 of the power tube Q1; the 1 pin of the USB-A2 port is connected with the 8 pin of the power tube Q4, the 2 pin and the 3 pin of the USB-A2 port are connected with the 6 pin and the 1 pin of the protocol IC chip U2, and the 4 pin of the USB-A2 port is connected with the 5 pin and the 2 pin of the power tube Q2; a pin 5 of the protocol IC chip U1 is connected with a resistor R1, a resistor R1 is connected with a pin 1 circuit interface of a USB-A1 port, a pin 4 of the protocol IC chip U1 is connected with a resistor R2, a resistor R2 is connected with a pin 23 of the MCU chip U4, and a pin 3 of the protocol IC chip U1 is connected with a pin 10 of a buck-boost IC chip U3; a pin 5 of the protocol IC chip U2 is connected with a resistor R21, a resistor R21 is connected with a pin 1 circuit interface of a USB-A2 port, a pin 4 of the protocol IC chip U2 is connected with a resistor R22, a resistor R22 is connected with a pin 23 of the MCU chip U4, and a pin 3 of the protocol IC chip U2 is connected with a pin 10 of a buck-boost IC chip U3;
Preferably, the 4-pin circuit interface of the USB-a1 port is connected to the resistor R7 and the resistor R8, and the resistor R7 and the resistor R8 are respectively connected to the pin 28 and the pin 10 of the MCU chip U4.
Preferably, the 4-pin circuit interface of the USB-a2 port is connected to the resistor R27 and the resistor R28, and the resistor R27 and the resistor R28 are respectively connected to the pin 28 and the pin 10 of the MCU chip U4.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the single-path double-USB-A port parallel type quick charging mobile power supply, when a mobile phone is inserted into a USB-A1 port, a pin Vin-A1 of an MCU chip U4 is changed from a high level to a low level, after a protocol IC chip U1 judges whether a QC function is output or not, a pin USBA _ EN1 of the MCU chip U4 is changed from the low level to the high level, and therefore a power tube Q1 is conducted and can be directly output after passing through a power tube Q3.
2. According to the single-path double-USB-A port parallel connection type quick charging mobile power supply, a mobile phone is pulled out from a USB-A1 port, then when a USB-A2 port is inserted, a pin Vin-A2 of an MCU chip U4 is changed from a high level to a low level, at the moment, MCU software enables a pin USBA _ EN1 of the MCU chip U4 to be changed from a high level to a low level, so that a power tube Q1 and a power tube Q3 of the USB-A1 port are closed, the level of the pin Vin-A1 of the MCU chip U4 of an insertion detection pin of the USB-A1 port at the moment is judged, and if the level is low, the USB-A1 port is loaded; if it is high, it indicates that the USB-A1 port is not loaded.
3. According to the single-path double-USB-A port parallel type quick charging mobile power supply, when a load exists at the USB-A1 port, the voltage is increased to 5V, and the power tube Q3 and the power tube Q4 at the USB-A1 port and the USB-A2 port are opened, namely, 5V is output at the two ports simultaneously; when the USB-A1 port is not loaded, the USB-A2 port judges whether to output the QC function after communicating through the protocol IC chip U2, and the pin USBA _ EN2 of the MCU chip U4 is changed from low level to high level, so that the power tube Q2 and the power tube Q4 are opened and then can be directly output.
To sum up: this portable power source is filled soon to two parallelly connected types of two USB-A mouths of single channel, QC output can be realized to two mouths homoenergetic, and can switch over to QC output immediately when removing from a mouthful and inserting another mouth, need not latency T, two mouths all only export 5V with carrying simultaneously, support the undercurrent mode, get into the dormancy state automatically after the T time under the no load condition, realize switching soon and fill the function immediately, convenience of customers uses, very big promotion user uses the satisfaction, very big product competitiveness that has promoted.
Drawings
FIG. 1 is a first circuit diagram of the present invention;
FIG. 2 is a second circuit diagram of the present invention;
FIG. 3 is a third circuit diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a single-channel dual-USB-a port parallel fast charging mobile power supply includes a USB-a1 port, a USB-a2 port, a protocol IC chip U1, a protocol IC chip U2, a power tube Q1, a power tube Q2, a power tube Q3, a power tube Q4, a buck-boost IC chip U3, and an MCU chip U4; wherein, the 1 pin of the USB-A1 port is connected with the 8 pin of the power tube Q3, the 2 pin and the 3 pin of the USB-A1 port are connected with the 6 pin and the 1 pin of the protocol IC chip U1, and the 4 pin of the USB-A1 port is connected with the 5 pin and the 2 pin of the power tube Q1; a pin 1 of the USB-A2 port is connected with a pin 8 of a power tube Q4, a pin 2 of the USB-A2 port and a pin 3 are connected with a pin 6 and a pin 1 of a protocol IC chip U2, and a pin 4 of the USB-A2 port is connected with a pin 5 and a pin 2 of a power tube Q2; a pin 5 of the protocol IC chip U1 is connected with a resistor R1, a resistor R1 is connected with a pin 1 circuit interface of the USB-A1 port, a pin 4 of the protocol IC chip U1 is connected with a resistor R2, a resistor R2 is connected with a pin 23 of the MCU chip U4, and a pin 3 of the protocol IC chip U1 is connected with a pin 10 of the buck-boost IC chip U3; the pin 5 of the protocol IC chip U2 is connected with a resistor R21, a resistor R21 is connected with a pin 1 circuit interface of the USB-A2 port, the pin 4 of the protocol IC chip U2 is connected with a resistor R22, a resistor R22 is connected with the pin 23 of the MCU chip U4, and the pin 3 of the protocol IC chip U2 is connected with the pin 10 of the buck-boost IC chip U3.
A 4-pin circuit interface of the USB-A1 port is connected with a resistor R7 and a resistor R8, and the resistor R7 and the resistor R8 are respectively connected with a pin 28 and a pin 10 of the MCU chip U4; a 4-pin circuit interface of the USB-A2 port is connected with a resistor R27 and a resistor R28, and the resistor R27 and the resistor R28 are respectively connected with a pin 28 and a pin 10 of the MCU chip U4; according to the single-path double-USB-A port parallel type quick charging mobile power supply, when a mobile phone is inserted into a USB-A1 port, a pin Vin-A1 of an MCU chip U4 is changed from a high level to a low level, after a protocol IC chip U1 judges whether a QC function is output or not, a pin USBA _ EN1 of the MCU chip U4 is changed from the low level to the high level, and therefore a power tube Q1 is conducted and can be directly output after passing through a power tube Q3.
According to the single-path double-USB-A port parallel connection type quick charging mobile power supply, a mobile phone is pulled out from a USB-A1 port, then when a USB-A2 port is inserted, a pin Vin-A2 of an MCU chip U4 is changed from a high level to a low level, at the moment, MCU software enables a pin USBA _ EN1 of the MCU chip U4 to be changed from a high level to a low level, so that a power tube Q1 and a power tube Q3 of the USB-A1 port are closed, the level of the pin Vin-A1 of the MCU chip U4 of an insertion detection pin of the USB-A1 port at the moment is judged, and if the level is low, the USB-A1 port is loaded; if it is high, it indicates that the USB-A1 port is not loaded.
According to the single-path double-USB-A port parallel type quick charging mobile power supply, when a load exists at the USB-A1 port, the voltage is increased to 5V, and the power tube Q3 and the power tube Q4 at the USB-A1 port and the USB-A2 port are opened, namely, 5V is output at the two ports simultaneously; when the USB-A1 port is not loaded, the USB-A2 port judges whether to output the QC function after communicating through the protocol IC chip U2, and the pin USBA _ EN2 of the MCU chip U4 is changed from low level to high level, so that the power tube Q2 and the power tube Q4 are opened and then can be directly output.
In summary, the following steps: this portable power source is filled soon to two parallelly connected types of two USB-A mouths of single channel, QC output can be realized to two mouths, and can switch over to QC output immediately when pulling out from a mouthful and inserting another mouth, need not latency T, two mouths all only export 5V with carrying simultaneously, support the undercurrent mode, automatically get into the dormant state after T time under the no load condition, can realize switching the function of filling soon immediately, convenience of customers uses, very big promotion user uses the satisfaction, very big promotion product competitiveness, therefore effectively solve prior art problem.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a quick portable power source that fills of parallelly connected type of two USB-A mouths of one way, includes USB-A1 mouth, USB-A2 mouth, agreement IC chip U1, agreement IC chip U2, power tube Q1, power tube Q2, power tube Q3, power tube Q4, step-up and step-down IC chip U3 and MCU chip U4, its characterized in that: the 1 pin of the USB-A1 port is connected with the 8 pin of the power tube Q3, the 2 pin and the 3 pin of the USB-A1 port are connected with the 6 pin and the 1 pin of the protocol IC chip U1, and the 4 pin of the USB-A1 port is connected with the 5 pin and the 2 pin of the power tube Q1; the 1 pin of the USB-A2 port is connected with the 8 pin of the power tube Q4, the 2 pin and the 3 pin of the USB-A2 port are connected with the 6 pin and the 1 pin of the protocol IC chip U2, and the 4 pin of the USB-A2 port is connected with the 5 pin and the 2 pin of the power tube Q2; a pin 5 of the protocol IC chip U1 is connected with a resistor R1, a resistor R1 is connected with a pin 1 circuit interface of a USB-A1 port, a pin 4 of the protocol IC chip U1 is connected with a resistor R2, a resistor R2 is connected with a pin 23 of the MCU chip U4, and a pin 3 of the protocol IC chip U1 is connected with a pin 10 of a buck-boost IC chip U3; a pin 5 of the protocol IC chip U2 is connected with a resistor R21, a resistor R21 is connected with a pin 1 circuit interface of a USB-A2 port, a pin 4 of the protocol IC chip U2 is connected with a resistor R22, a resistor R22 is connected with a pin 23 of the MCU chip U4, and a pin 3 of the protocol IC chip U2 is connected with a pin 10 of a buck-boost IC chip U3;
pins 6 and 4 of the power tube Q1 are connected with a resistor R11, and after the resistor R11 is connected with a capacitor C2 and a resistor R10 in series, the power tube Q1 is connected with a pin 13 of the MCU chip U4; pins 6 and 4 of the power tube Q2 are connected with a resistor R31, and after the resistor R31 is connected with a capacitor C4 and a resistor R30 in series, the power tube Q2 is connected with a pin 14 of an MCU chip U4; the 4 pins of the power tube Q3 are connected with a series resistor R3 and a resistor R4, then connected with the collector of the triode Q5, and simultaneously, the base of the triode Q5 is connected with a resistor R5 and a resistor R6 which are connected in series, and then connected with the 13 pins of the MCU chip U4; the 4 pins of the power tube Q4 are connected with a series resistor R23 and a resistor R24, then connected with the collector of the triode Q6, and simultaneously, the base of the triode Q6 is connected with a resistor R25 and a resistor R26 which are connected in series, and then connected with the 14 pins of the MCU chip U4; the power tube Q3 and the pin 1 of the power tube Q4 are connected with the resistor R9 and then connected with the pin 2 of the buck-boost IC chip U3; the 3 pin and the 4 pin of the buck-boost IC chip U3 are connected with the inductor L1, and the 1 pin of the buck-boost IC chip U3 is connected with the battery input circuit VBAT.
2. The single-path double-USB-A port parallel type quick-charging mobile power supply according to claim 1, characterized in that: the 4-pin circuit interface of the USB-A1 port is connected with a resistor R7 and a resistor R8, and the resistor R7 and the resistor R8 are respectively connected with a pin 28 and a pin 10 of the MCU chip U4.
3. The single-path double-USB-A port parallel type quick-charging mobile power supply according to claim 1, characterized in that: the 4-pin circuit interface of the USB-A2 port is connected with a resistor R27 and a resistor R28, and the resistor R27 and the resistor R28 are respectively connected with a pin 28 and a pin 10 of the MCU chip U4.
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| CN202011054522.1A CN112366761B (en) | 2020-09-29 | 2020-09-29 | Single-path double-USB-A port parallel type quick-charging mobile power supply |
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| CN202011054522.1A CN112366761B (en) | 2020-09-29 | 2020-09-29 | Single-path double-USB-A port parallel type quick-charging mobile power supply |
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| CN112366761B CN112366761B (en) | 2022-05-03 |
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Cited By (1)
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| CN114567033A (en) * | 2022-02-21 | 2022-05-31 | 湖南炬神电子有限公司 | Circuit for improving conversion efficiency of multi-port charger |
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| CN112366761B (en) | 2022-05-03 |
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