A charging method of a compatibility fast charging protocol and an adapter thereof

Abstract

The application discloses a charging method and an adapter compatible with a fast charging protocol, and comprises the following steps: step one, connecting a power supply and an electric device by the adapter; step two, detecting a level change by a chip built in the adapter, and supplying power to the electric device; step three, detecting a resistance value of a pull-down resistor of the electric device by the adapter, and reading a detected resistance configuration mode by the chip, and identifying a configuration mode of the electric device; step four, matching and inquiring in a protocol library built in the chip, and successfully identifying a fast charging protocol supported by the electric device by the chip, so that the chip simulates and sends specific voltage, current or digital instructions required by the protocol; and step five, reaching an agreement between the electric device and the adapter, and adjusting output voltage and current of the adapter to a high power gear required by the protocol, so that the problem of mutual incompatibility of different brands of fast charging protocols is solved, fast charging is realized, and resource waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of charging technology, and more particularly to a charging method and adapter compatible with fast charging protocols. Background Technology

[0002] Currently, smartphone fast charging technology is fragmented by proprietary protocols of various manufacturers (such as Huawei SCP, OPPO VOOC, and Xiaomi's modified QC), resulting in extremely poor compatibility between user devices and forcing users to purchase multiple sets of original accessories. This not only increases the cost of use but also generates a large amount of electronic waste.

[0003] The proposed solution has obvious flaws: the universal charger uses an inefficient and unsafe "blind test" protocol with a low success rate; the USB PD standard protocol is difficult to trigger full-power fast charging due to manufacturer software limitations; and the simple resistor identification adapter is functionally limited and extremely risky.

[0004] Therefore, it is necessary to develop a charging method and adapter compatible with fast charging protocols to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly charging method and adapter that is compatible with fast charging protocols and provides efficient fast charging.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a charging method compatible with fast charging protocols, comprising:

[0007] Step 1: Connect the adapter to the power source and the device being used;

[0008] Step 2: The adapter's built-in Ai UFCS chip detects the level change, recognizes "device connected", and turns on the V output of VBUS, so that the device receives basic power.

[0009] Step 3: The adapter's DFP detects the resistance value of the UFP pull-down resistor of the power device. The Ai UFCS chip intervenes, reads the detected resistor configuration mode, and identifies the various configuration modes of the power device.

[0010] Step 4: The Ai UFCS chip matches and queries its built-in protocol library. Once the Ai UFCS chip successfully identifies the fast charging protocol supported by the mobile phone, it will simulate and issue the specific voltage, current or digital commands required by the protocol to complete the "handshake" with the mobile phone.

[0011] Step 5: Once the device and the adapter reach an agreement, the adapter will adjust the output voltage and current to the high power level required by the agreement to achieve fast charging.

[0012] Furthermore, in step one, the adapter, relative to the power supply, assumes the function of a UFP (Unified Photonic Plug-in), which has a pull-down resistor (Rd) on its CC channel. The PCB board, relative to the electrical equipment, assumes the function of a DFP (Distributed Photonic Plug-in), which has a pull-up resistor (Rp) on its CC channel.

[0013] Furthermore, in step three, the adapter's DFP will further detect the resistance value of the device's UFP pull-down resistor through the CC pin. The Ai UFCS chip intervenes, reads the resistor configuration mode detected by the CC pin, and identifies various configuration modes of the device.

[0014] Furthermore, in step two, the CC pull-up resistor (Rp) inside the adapter's DFP and the pull-down resistor (Rd) inside the adapter's UFP form a voltage divider circuit, which causes the CC pin level monitored by the DFP to be pulled low.

[0015] Furthermore, in step two, the Ai UFCS chip detects this level change and then controls the MOSFET switch to turn on the V output of VBUS.

[0016] Furthermore, in step three, according to the USB Type-C specification, different pull-down resistor values ​​represent different identities or capabilities, such as Open, Ra=0.8-1.2K, and Rd=5.1K.

[0017] Furthermore, in step three, the Ai UFCS chip intervenes and can also combine other signals that may be transmitted from the VBUS / D+ / - data lines to identify various configuration modes of the electrical equipment.

[0018] Furthermore, in step one, both the power supply and the device have a USB Type-C interface, and the USB Type-C interface has one or more CC pins.

[0019] An adapter for using the charging method of the above-mentioned compatible fast charging protocol, the adapter having an Ai UFCS chip, the Ai UFCS chip having a built-in protocol library.

[0020] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention is a charging method and adapter compatible with fast charging protocols. It is environmentally friendly and can provide efficient fast charging. By intelligently identifying the CC pin resistor configuration and dynamically simulating the corresponding private protocol through the adapter, it successfully solves the problem of incompatibility between fast charging protocols of different brands. It reduces electronic waste and resource waste from the source and has positive environmental significance. At the same time, it allows users to obtain a native fast charging experience without having to purchase multiple original chargers, significantly reducing the cost of use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic flowchart of a charging method compatible with a fast charging protocol according to the present invention.

[0023] Figure 2 A three-dimensional structural diagram of an adapter for a charging method using a compatible fast charging protocol according to the present invention;

[0024] Figure 3 for Figure 2 The diagram shows a partial structural schematic of an adapter using a charging method based on a compatible fast charging protocol of the present invention.

[0025] Figure 4 for Figure 2 The diagram shows an adapter circuit for a charging method using a compatible fast charging protocol according to the present invention. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed account of the connector proposed according to the present invention, including its specific implementation, structure, features, and effects. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] The following description, in conjunction with the accompanying drawings, details a specific scheme for a charging method and adapter compatible with a fast charging protocol provided by the present invention.

[0029] Please refer to Figures 1 to 4This invention discloses a charging method compatible with fast charging protocols, implemented through three components: a power supply 100, a power-consuming device 200, and an adapter 300. The power supply 100 includes, but is not limited to, batteries, chargers, power banks, and charging interfaces. The power-consuming device 200 includes, but is not limited to, mobile phones, tablets, iPads, and smart wearable devices. Both the power supply 100 and the power-consuming device 200 have a USB Type-C interface. The USB Type-C interface has one or more CC pins for connection detection, orientation detection, and advanced communication (such as the USB Power Delivery protocol).

[0030] Specifically, the downstream port of power supply 100 is a DFP (Downstream Facing Port). The upstream port of power device 200 is a UFP (Upstream Facing Port).

[0031] The adapter 300 includes a PCB board 301 and an Ai UFCS chip 302. The PCB board 301 has both a downstream port (DFP) and an upstream port (UFP), which can be connected to the DFP of the power supply 100 and the UFP of the device 200, respectively. Specifically, relative to the power supply 100, the PCB board 301 functions as the UFP, and the CC channel of this UFP has a pull-down resistor (Rd). Relative to the device 200, the PCB board 301 functions as the DFP, and the CC channel of this DFP has a pull-up resistor (Rp). The adapter 300 draws power from the power supply 100 and distributes it to the device 200.

[0032] Please refer to Figure 4 Specifically, the adapter 300 is the Source (power supply) part, and the power-consuming device 200 and the data cable connected to the power-consuming device 200 are the Sink (power receiving) parts.

[0033] The adapter 300 includes an Ai UFCS chip 302, which is used for connection detection, cold plug / unplug operation management, and control of Vconn (a pin in the USB Type-C interface specifically designed to power a chip within an electronically marked active cable, typically 5V / 1W. This cable can be identified and powered by a DFP via a specific resistance value on the CC pin).

[0034] Rp resistor and switch assembly: Rp is a pull-up resistor, which is connected to the 5V power supply through a switch. In the USB Type-C CC (Configuration Channel, i.e. Cc1 and Cc2 in the circuit) communication, it transmits information such as power supply capability to the Sink end.

[0035] Vconn related components: Vconn is used to provide power to active USB Type-C cables (cables with internal chips that require power to operate). The on / off state of Vconn is controlled by a switch. When using an active cable, Vconn power is provided to it through Cc1 or Cc2.

[0036] CC Channels (Cc1, Cc2): These are key channels for USB Type-C to achieve reversible insertion, power supply negotiation, and data transfer mode negotiation. They are used for communication between the Source and Sink ends to determine parameters such as power supply current and data transfer rate.

[0037] The Sink (power receiving end) section includes an Rd resistor, which is a pull-down resistor. When the Rp of the Source end and the Rd of the Sink end are connected through the CC channel, the resulting electrical characteristics will be detected by both parties, thereby identifying the connection relationship and conducting subsequent power supply negotiation.

[0038] The detection module includes a "Connection Detection" module to detect the connection status with the source end, and a "USB Type-C Current Detection" module to detect the current and other conditions obtained from the source end, ensuring that the power received is within a safe range.

[0039] VBUS (Power Bus) is the main power supply line for USB Type-C. The Source end provides power to the Sink end through VBUS, and its voltage and other parameters are determined according to the negotiation results (such as the standard 5V, or higher voltage for fast charging and other scenarios).

[0040] When the Source and Sink are connected, connection detection and power supply capability negotiation are first performed via channels Cc1 and Cc2 using a combination of Rp (Source) and Rd (Sink). Based on the negotiation result, the Source supplies power to the Sink via VBUS. If an active cable is used, the Source will also provide Vconn power via Cc1 or Cc2. Simultaneously, the control module manages operations such as cold plugging and unplugging to ensure the safety and stability of the device connection and power supply process.

[0041] The workflow of a charging method compatible with fast charging protocols according to the present invention is as follows:

[0042] In the initial state, before the DFP of adapter 300 and the UFP of electrical equipment 200 are connected, its VBUS (power output line) is off and there is no voltage output.

[0043] When adapter 300 is connected to power supply 100 and power device 200 respectively, the DFP of adapter 300 is connected to the UFP of power device 200 through the CC pin, and the UFP of adapter 300 is connected to the DFP of power supply 100 through the CC pin. The CC pull-up resistor (Rp) inside the DFP of adapter 300 and the pull-down resistor (Rd) inside the UFP of adapter 300 form a voltage divider circuit, which causes the CC pin level monitored by the DFP to be pulled low.

[0044] The AI ​​UFCS chip 302 detects this level change, recognizes "device connected," and then controls the MOSFET switch to turn on the 5V output of VBUS. At this time, the device 200 receives the basic 5V power supply and can begin slow charging.

[0045] The DFP of adapter 300 will further detect the pull-down resistor value of the device 200UFP through the CC pin. According to the USB Type-C specification, different pull-down resistor values ​​represent different identities or capabilities, such as (Open, Ra=0.8-1.2K, Rd=5.1K).

[0046] The AI ​​UFCS chip 302 intervenes, reads the resistor configuration pattern (Open, Ra, Rd) detected by the CC pin, and identifies various configuration patterns of the power device 200. Preferably, it can also be combined with other signals that may be transmitted from the VBUS / D+ / - data lines.

[0047] The Ai UFCS chip 302 performs matching and querying in its built-in protocol library. Once the Ai UFCS chip 302 successfully identifies the fast charging protocol supported by the device 200 (for example, it identifies the Ra resistor and determines that this is an OPPO phone that supports the VOOC protocol), the Ai UFCS chip 302 will simulate and send the specific voltage, current or digital commands required by the protocol (via CC or data line) to complete the "handshake" with the device 200.

[0048] After a successful handshake, the power device 200 and the adapter 300 reach an agreement. The adapter 300 adjusts the output voltage and current to the high power level required by the protocol (such as 9V / 2A, 10V / 4A, etc.) to truly achieve fast charging.

[0049] This invention relates to a charging method and adapter compatible with fast charging protocols. It is environmentally friendly and provides efficient fast charging. By intelligently identifying the CC pin resistor configuration and dynamically simulating the corresponding proprietary protocol through the adapter, it successfully solves the problem of incompatibility between fast charging protocols of different brands. This reduces electronic waste and resource waste from the source and has positive environmental significance. At the same time, it allows users to obtain a native fast charging experience without having to purchase multiple original chargers, significantly reducing usage costs.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A charging method compatible with fast charging protocols, characterized in that, include: Step 1: The adapter (300) is connected to the power supply (100) and the electrical device (200) respectively. The adapter (300) is responsible for the UFP function relative to the power supply (100). The CC channel of the UFP has a pull-down resistor (Rd). The adapter (300) includes a PCB board (301) and an Ai UFCS chip (302). The PCB board (301) is responsible for the DFP function relative to the electrical device (200). The CC channel of the DFP has a pull-up resistor (Rp). Step 2: The pull-up resistor (Rp) inside the DFP of the adapter (300) and the pull-down resistor (Rd) inside the UFP of the power supply device (200) form a voltage divider circuit, which causes the CC pin level monitored by the DFP to be pulled low. The Ai UFCS chip (302) built into the adapter (300) detects the level change, recognizes "device connected", and then controls the MOSFET switch to turn on the 5V output of VBUS, so that the power supply device (200) obtains basic power supply. Step 3: The DFP of the adapter (300) will detect the resistance value of the UFP pull-down resistor of the power device (200) through the CC pin. The Ai UFCS chip (302) intervenes, reads the resistor configuration mode detected by the CC pin, and identifies the various configuration modes of the power device (200). Step 4: The Ai UFCS chip (302) performs matching and querying in its built-in protocol library. Once the Ai UFCS chip (302) successfully identifies the fast charging protocol supported by the power device (200), the Ai UFCS chip (302) will simulate and issue the specific voltage, current or digital commands required by the protocol to complete the "handshake" with the power device (200). Step 5: The electrical equipment (200) and the adapter (300) reach an agreement. The adapter (300) adjusts the output voltage and current to the high power level required by the agreement to achieve fast charging.

2. The charging method for compatible fast charging protocols according to claim 1, characterized in that, In step three, according to the USB Type-C specification, different pull-down resistor values ​​represent different identities or capabilities.

3. The charging method for compatible fast charging protocols according to claim 2, characterized in that, In step three, the Ai UFCS chip (302) intervenes and can also combine other signals transmitted from the VBUS / D+ / - data line to identify various configuration modes of the electrical equipment (200).

4. The charging method for a compatible fast charging protocol according to claim 1, characterized in that, In step one, both the power supply (100) and the power device (200) have USB Type-C interfaces, and the USB Type-C interfaces have one or more CC pins.

5. An adapter, characterized in that, The charging method using the compatible fast charging protocol according to any one of claims 1 to 4, wherein the adapter has an Ai UFCS chip (302) and the Ai UFCS chip (302) has a built-in protocol library.

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