Portable direct current digital display power supply controller based on QC protocol decoy

Abstract

The utility model provides a portable direct current digital display power supply controller based on QC protocol decoy. The portable direct current digital display power supply controller comprises a decoy trigger circuit, a current / voltage conversion circuit and a voltage switching and digital display circuit. The decoy trigger circuit uses a QC fast charging protocol trigger CH224K and a peripheral circuit to decoy the fast charging charger, so that the charger outputs various DC voltages. The current / voltage conversion circuit uses a Hall current sensor chip CC6900SO-5A to convert input current into voltage based on a Hall effect. A fast charging protocol trigger is used to decoy the mobile phone fast charging charger to output various voltages of 20V, 15V, 12V, 9V or 5V commonly used by a portable product, and a digital display is added to display the voltage and current value output by the charger, so that the charging state is monitored in real time, and the unification of more electronic equipment chargers is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of power management, in particular to a portable direct current digital display power controller based on QC protocol deception. Background Art

[0002] The increasing number of electronic products not only provides convenience for people's lives, but also brings the trouble of various chargers (adapters) with different voltages. For example, laptops need 20V chargers, cameras and monitoring equipment rely on 12V chargers, and mobile phones are adapted to 5V chargers. This means that when going out, you have to carry a "charger team", which not only increases the burden of luggage, but also sometimes causes inconvenience due to forgetting a charger.

[0003] At present, mobile phone fast charging technology has become popular. The principle of high-voltage fast charging technology based on the QC protocol is to quickly charge the battery through high voltage and low current. The mobile phone charger converts the 220V AC power into DC output, and according to the detected charging current, it intelligently adjusts the output to 20V, 15V, 12V, 9V or 5V through various fast charging protocols to meet the charging needs of different batteries. Use the voltage regulating circuit to trick the fast charging charger through the fast charging protocol trigger CH224K, so that it outputs various voltages of 20V, 15V, 12V, 9V or 5V, and then add a digital display circuit to display the voltage and current values ​​of the charger output in real time to prevent the electrical appliances from being connected to excessively high voltages and causing damage. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a portable DC digital display power controller based on QC protocol deception, so as to achieve the unification of chargers for more electronic devices and reduce unnecessary repeated purchases and carrying burdens.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a portable DC digital display power supply controller based on QC protocol deception, including: a deception trigger circuit, a current / voltage conversion circuit and a voltage switching and digital display circuit;

[0006] The deception trigger circuit uses the QC fast charge protocol trigger CH224K and peripheral circuits to deceive the fast charge charger to output a variety of DC voltages;

[0007] The current / voltage conversion circuit uses the Hall current sensor chip CC6900SO-5A to convert the input current into a voltage based on the Hall effect;

[0008] The voltage switching and digital display circuit is composed of a single chip microcomputer with built-in ADC function, a digital display, two human-machine interaction buttons and an output control circuit, wherein the two human-machine interaction buttons are a voltage adjustment button and an output control button.

[0009] Furthermore, the decoy trigger circuit is connected to the fast charging charger via a data cable of a USB at one end and a type c interface at the other end, and the DP and DN pins of the fast charging protocol trigger CH224k are connected to the DP and DN ends of the type c socket. When the microcontroller sets the CFG1, CFG2 and CFG3 pins to a high or low level, the fast charging protocol trigger CH224k communicates with the fast charging charger through the USB interface according to the QC fast charging protocol, so that the fast charging charger outputs a variety of voltages within 5V-20V to the VBUS pin of the type c port.

[0010] The current output by the fast charging charger is converted into a voltage through the Hall current sensor chip CC6900SO-5A. The voltage is linearly proportional to the current passing through. The microcontroller with built-in ADC function can obtain the current value by measuring the voltage output by the Hall current sensor chip.

[0011] The voltage output to be obtained is set by the voltage adjustment button, and the output control button controls the connection and disconnection of the power supply output; the microcontroller sets the CFG1, CFG2 and CFG3 pins of the fast charging protocol trigger CH224k to high or low levels in the order of 5V, 9V, 12V, 15V and 20V, and the fast charging charger can output the corresponding voltage.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is based on the mobile phone fast charging QC protocol, uses a fast charging protocol trigger, that is, a decoy trigger chip, to trick the mobile phone fast charging charger into outputting various voltages of 20V, 15V, 12V, 9V or 5V commonly used in portable products, and at the same time adds a digital display to display the voltage and current value output by the charger, so as to monitor the charging status in real time. It realizes the unification of chargers for more electronic devices, reduces unnecessary repeated purchases and carrying burdens, which also means that whether it is a notebook, professional photography equipment, or daily mobile portable equipment, they can share the same efficient and widely compatible charging solution, making technology truly a powerful assistant to simplify life and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the deception trigger circuit diagram of the utility model;

[0014] Figure 2 It is the current / voltage conversion circuit diagram of the utility model;

[0015] Figure 3 This is the voltage switching and digital display circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] Reference Figure 1-3As shown, a portable DC digital display power supply controller based on QC protocol deception includes: a deception trigger circuit, a current / voltage conversion circuit and a voltage switching and digital display circuit;

[0017] The deception trigger circuit uses the QC fast charge protocol trigger CH224K and peripheral circuits to deceive the fast charge charger to output a variety of DC voltages;

[0018] The current / voltage conversion circuit uses the Hall current sensor chip CC6900SO-5A to convert the input current into a voltage based on the Hall effect;

[0019] The voltage switching and digital display circuit is composed of a single chip microcomputer with built-in ADC function, a digital display, two human-machine interaction buttons and an output control circuit, wherein the two human-machine interaction buttons are a voltage adjustment button and an output control button.

[0020] like Figure 1 As shown, the decoy trigger circuit is connected to the fast charging charger through a data line of a USB at one end and a type c interface at the other end, and the DP and DN pins of the fast charging protocol trigger CH224k are connected to the DP and DN ends of the type c socket. When the microcontroller sets the CFG1, CFG2 and CFG3 pins to high or low levels, the fast charging protocol trigger CH224k communicates with the fast charging charger through the USB interface according to the QC fast charging protocol, so that the fast charging charger outputs a variety of voltages within 5V-20V to the VBUS pin of the type c port.

[0021] like Figure 2 As shown, the current output by the fast charging charger is converted into a voltage through the Hall current sensor chip CC6900SO-5A. The voltage is linearly proportional to the current passing through. The microcontroller with built-in ADC function can obtain the current value by measuring the voltage output by the Hall current sensor chip.

[0022] The voltage output to be obtained is set by the voltage adjustment button, and the output control button controls the connection and disconnection of the power supply output; the single-chip microcomputer sets the CFG1, CFG2 and CFG3 pins of the fast charge protocol trigger CH224k to high or low levels in the order of 5V, 9V, 12V, 15V and 20V, and the fast charge charger can output the corresponding voltage. Specifically, the user can set the voltage output to be obtained by operating the "voltage adjustment" button S1, and then operate the "output control" button S2 to connect and disconnect the power supply output. After the single-chip microcomputer detects that the "voltage adjustment" button is pressed and released, the CFG1, CFG2 and CFG3 pins of the fast charge protocol trigger, that is, the decoy trigger chip CH224k, are set to high or low levels in the order of 5V, 9V, 12V, 15V and 20V, and the fast charge charger can output the corresponding voltage; after the single-chip microcomputer detects that the "output control" button is pressed and released, it controls the power supply output to be connected or disconnected in two cycle states of opening and closing.

[0023] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A portable DC digital display power controller based on QC protocol deception, characterized in that: include: Decoy trigger circuit, current / voltage conversion circuit and voltage switching and digital display circuit; The deception trigger circuit uses the QC fast charge protocol trigger CH224K and peripheral circuits to deceive the fast charge charger to output a variety of DC voltages; The current / voltage conversion circuit uses the Hall current sensor chip CC6900SO-5A to convert the input current into a voltage based on the Hall effect; The voltage switching and digital display circuit is composed of a single chip microcomputer with built-in ADC function, a digital display, two human-machine interaction buttons and an output control circuit, wherein the two human-machine interaction buttons are a voltage adjustment button and an output control button.

2. The portable DC digital display power supply controller based on QC protocol deception according to claim 1 is characterized in that: The deception trigger circuit is connected to the fast charging charger through a data line of a USB at one end and a type c interface at the other end. The DP and DN pins of the fast charging protocol trigger CH224k are connected to the DP and DN ends of the type c socket. When the microcontroller sets the CFG1, CFG2 and CFG3 pins to high or low levels, the fast charging protocol trigger CH224k communicates with the fast charging charger through the USB interface according to the QC fast charging protocol, so that the fast charging charger outputs a variety of voltages within 5V-20V to the VBUS pin of the type c port.

3. The portable DC digital display power supply controller based on QC protocol deception according to claim 1 is characterized in that: The current output by the fast charging charger is converted into a voltage through the Hall current sensor chip CC6900SO-5A. The voltage is linearly proportional to the current passing through. The microcontroller with built-in ADC function can obtain the current value by measuring the voltage output by the Hall current sensor chip.

4. The portable DC digital display power supply controller based on QC protocol deception according to claim 1 is characterized in that: The voltage output to be obtained is set by the voltage adjustment button, and the output control button controls the connection and disconnection of the power supply output; the microcontroller sets the CFG1, CFG2 and CFG3 pins of the fast charging protocol trigger CH224k to high or low levels in the order of 5V, 9V, 12V, 15V and 20V, and the fast charging charger can output the corresponding voltage.

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