WO2022012527A1

WO2022012527A1 - Charger, data cable, charging device, and electronic device

Info

Publication number: WO2022012527A1
Application number: PCT/CN2021/106003
Authority: WO
Inventors: 李达寰
Original assignee: 维沃移动通信有限公司
Priority date: 2020-07-14
Filing date: 2021-07-13
Publication date: 2022-01-20
Also published as: CN111817380A; CN111817380B

Abstract

The present application discloses a charger, a data cable, a charging device, and an electronic device. The charger comprises a first Type-A interface and a protocol control module; the first Type-A interface comprises a CC pin, a data pin, a VBUS pin, and a GND pin, the CC pin and the VBUS pin being connected to a first end of the protocol control module, and the data pin being connected to a second end of the protocol control module; under the condition that the charger is connected, by means of the data cable, to a device to be charged, the charger performs PD charging on said device if the protocol control module obtains a communication signal transmitted through the CC pin; and the charger is used for performing non-PD charging on said device if the protocol control module obtains a communication signal transmitted through the data pin.

Description

Chargers, cables, charging equipment and electronic equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202010673758.7 filed in China on Jul. 14, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present application belongs to the field of communication technologies, and specifically relates to a charger, a data cable, a charging device and an electronic device.

Background technique

With the development of science and technology, the application of fast charging is becoming more and more extensive.

In related technologies, the Power Delivery (PD) protocol is usually used to quickly charge devices such as laptops. In order to support PD protocol charging, the charger needs to use a Configuration Channel (CC) signal line for communication. The PD protocol charging charger usually uses the third standard (Type-C) interface and is equipped with a Type-C to Type-C data cable. For the charger using the first standard (Type-A or Standard-A) interface, since it communicates through the D+/D- signal line, it cannot support PD protocol charging. However, currently the most widely used data cable is a data cable with a Type-A interface, so that the Type-A interface on a conventional data cable does not match the Type-C interface on a charger that supports PD protocol charging.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a charger, a data cable, a charging device and an electronic device, which can solve the problem that the data cable using the Type-A interface does not match the charging interface of the charger supporting the PD protocol.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a charger, including: a first Type-A interface and a protocol control module;

The first Type-A interface includes a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin and the VBUS pin are connected to the first end of the protocol control module, and the the data pin is connected with the second end of the protocol control module;

When the charger is connected to the device to be charged through a data cable, if the protocol control module acquires the communication signal transmitted through the CC pin, the charger performs PD charging on the device to be charged; If the protocol control module acquires the communication signal transmitted through the data pin, the charger is used to perform non-PD charging on the device to be charged.

In a second aspect, an embodiment of the present application provides a data cable, including: a second Type-A interface, a Type-C interface, and a cable connected between the second Type-A interface and the Type-C interface a cable, the cable is provided with a switching module;

Both the second Type-A interface and the Type-C interface include CC pins, data pins, VBUS pins and GND pins, and the second Type-A interface and the Type-C interface are The data pins, VBUS pins and GND pins are connected in one-to-one correspondence, and the cable includes a CC line, and both ends of the CC line are respectively connected to the CC pins and the CC pins in the second Type-A interface. CC pin in the Type-C interface;

The switching module controls the CC wiring to be connected or disconnected based on the electrical signal transmitted on the CC pin and the electrical signal transmitted on the data pin in the second Type-A interface.

In a third aspect, an embodiment of the present application provides a charging device, including a charger and a data cable connected to the charger, the charger is the charger of the first aspect, and the data cable is the second In the data line of the aspect, the CC pin, the data pin, the VBUS pin and the GND pin in the Type-A interface and the second Type-A interface are connected in one-to-one correspondence;

Wherein, when the charger is connected to the data line, the switching module in the data line is based on the CC pin in the second Type-A interface and the electrical signal transmitted on the data pin , control the connection or disconnection of the CC line;

When the charging device is connected to the device to be charged, if the CC wiring is connected, the charging device performs PD charging on the device to be charged; if the CC wiring is disconnected, the charging device performs PD charging on the device to be charged Non-PD charging.

In a fourth aspect, an embodiment of the present application provides an electronic device, the electronic device is a device to be charged that matches the charging device of the third aspect, and the electronic device includes a second Type-C interface, a third resistor and a power supply unit, the second Type-C interface includes a CC pin, a data pin, a VBUS pin and a GND pin, and the CC in the second Type-C interface and the first Type-C interface The pins, the data pins, the VBUS pins and the GND pins are connected in one-to-one correspondence, and the data pins in the second Type-C interface are also connected to the power supply unit through the third resistor.

The charger provided by the embodiment of the present application includes a first Type-A interface and a protocol control module, and the first Type-A interface includes a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin The pin and the VBUS pin are connected to the first end of the protocol control module. In this way, when the Type-A interface of the data cable connected to the charger also has a matching CC pin, the VBUS pin in the charger can be grounded with the resistor in the device to be charged that supports PD charging through the CC pin. Thereby, the electrical signal on the CC pin changes, so that the data line or the charger can obtain the electrical signal, and based on this, it is determined that the charging device is to perform PD charging on the device to be charged. At this time, the protocol control module obtains through the CC pin. The charging signal, and can perform PD charging on the device to be charged based on the communication information of the PD charging protocol transmitted on the CC pin, so that when the data line using the Type-A interface is connected to the charger provided by this application, it can support PD charging protocol.

Description of drawings

1 is a circuit diagram of a first charging device provided by an embodiment of the present application;

2 is a circuit diagram of a charger provided by an embodiment of the present application;

3 is a circuit diagram of a data line provided by an embodiment of the present application;

4 is a circuit diagram of a second charging device provided by an embodiment of the present application;

5 is a circuit diagram of a third charging device provided by an embodiment of the present application;

6 is a schematic diagram of the pins of the Type-A female socket in the charger provided by the embodiment of the present application;

7 is a schematic diagram of pins of a Type-A interface in a data line provided by an embodiment of the present application;

FIG. 8 is a working flowchart of the charging device provided by the embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between "first", "second", etc. The objects are usually of one type, and the number of objects is not limited. For example, the first object may be one or more than one. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

The charger, data cable, charging device, and electronic device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Please refer to FIGS. 1 , 2 and 3 at the same time, wherein FIG. 1 is a circuit diagram of a charging device provided by an embodiment of the present application; FIG. 2 is a circuit diagram of a charger provided by an embodiment of the present application; FIG. 3 is a circuit diagram provided by an embodiment of the present application circuit diagram of the data line.

In application, the charging device provided by the embodiment of the present application and the electronic device provided by the embodiment of the present application are matched with each other (or may also be referred to as a standard configuration). When the charging device provided by the embodiment of the present application is connected to the electronic device provided by the embodiment of the present application, the electronic device can be non-PD charging through the data pin or PD charging can be performed on the electronic device through the CC pin. In addition, when the charging device provided in the embodiment of the present application is connected to a non-standard device to be charged, PD charging or non-PD charging can also be performed on the non-standard device to be charged. The charging protocol of the device to be charged is determined through negotiation.

In specific implementation, the charging device provided by the embodiment of the present application can determine whether the device to be charged connected to the device to be charged is a standard device to be charged by detecting the electrical signals on the data pin and the CC pin.

Wherein, the above-mentioned data pins can be data pins in the existing Type-C interface, such as: D+ pin and D- pin, in a specific implementation, the above-mentioned data pins can also be other pins, such as: Signal transmission pins (TX pin and RX pin) in the third-generation universal serial bus (USB 3.0). For convenience of description, in the embodiments shown in FIGS. 1 to 5 , only the above-mentioned data pins include D+ pins and D- pins are used as examples for description, which are not specifically limited herein.

Specifically, as shown in FIG. 1 or FIG. 4 , the electronic device 3 provided in the embodiment of the present application includes a second Type-C interface, and the D+ pin, D- pin, and CC lead in the second Type-C interface are pin, VBUS pin and GND pin are connected to the D+ pin, D- pin, CC pin, VBUS pin and GND pin in the first Type-C interface 22 of the data line 2 in one-to-one correspondence, and the first The D+ pin in the two Type-C interfaces is connected to the power supply unit 32 through a third resistor 31 (ie, a pull-up resistor), and the CC pin in the second Type-C interface is connected to the power supply unit 32 through a fourth resistor 33 (ie, a pull-down resistor). GND pin.

In the application, when the charging device is connected to the power supply and the electronic device 3, the power supply unit 32 can provide power to the D+ pin to change the electrical signal on the D+ pin, and one end of the CC pin is connected to the target power supply 121 in the charger 1 , and the other end is grounded through the fourth resistor 33, which can also change the electrical signal on the CC pin.

Wherein, the D+ pin is connected to the power supply unit 32 through the third resistor 31, so that the charging device learns to be connected to the standard equipment to be charged based on the electrical signal on the D+ pin.

In addition, the CC pin is grounded through the fourth resistor 33, so that the charging device learns to be connected to the device to be charged that supports PD charging based on the electrical signal on the CC pin.

It should be noted that, in the specific implementation, the charging device provided by the embodiment of the present application can also be equipped with a standard configuration of the device to be charged that does not support PD charging, that is, the charging device provided by the embodiment of the present application is equipped with a standard CC in the device to be charged. The pin is not connected to ground through a pull-down resistor. In addition, the above-mentioned data pin connected to the power supply unit 32 through the third resistor 31 may also be a D-pin, which is not specifically limited herein.

Please refer to FIG. 1 and FIG. 2, the charger 1 includes: a first Type-A interface 11 and a protocol control module 12; the first Type-A interface 11 includes a CC pin, a data pin, a VBUS pin and a GND pin , the protocol control module 12 includes a target power supply 121, the CC pin and the target power supply 121 are respectively connected with the first end of the protocol control module 12, and the data pin is connected with the second end of the protocol control module 12;

During operation, when the charger 1 is connected to the device to be charged through the data line 2, if the protocol control module 12 obtains the communication signal transmitted through the CC pin, the charger 1 performs PD charging on the device to be charged; If the protocol control module 12 acquires the communication signal transmitted through the data pin, the charger 1 is used to perform non-PD charging on the device to be charged.

In a specific implementation, the above PD charging can be understood as a fast charging mode based on a PD communication protocol, and the communication signal of the PD communication protocol is transmitted through the CC pin.

It should be noted that, in the embodiment shown in FIG. 1, the data pins are marked as: D+ pins or D- pins (ie D+/D-). In addition, in practical applications, in the first Type-A interface A D+ pin and a D- pin may be included, and at least one of the D+ pin and the D- pin is connected to the switching module 24 .

In addition, the above-mentioned non-PD charging can be a charging mode based on the communication signal transmitted by the data pin. For example, in the case where the data pin is the D+ pin and the D- pin, the non-PD charging can be based on the D+/D- The charging method of the charging signal of the communication protocol (that is, the communication protocol of the communication signal transmitted through the D+ pin and the D- pin). Specifically, the protocol control module 12 may be pre-configured with a PD communication protocol and a preset communication protocol. The preset communication protocol is a communication protocol for communication signals transmitted through data pins. The charger 1 passes through a standard data cable. When connected to the standard equipment to be charged, the standard equipment to be charged can be charged as standard based on the preset communication protocol. The device to be charged of the device, and the device to be charged is configured with the above-mentioned preset communication protocol. In addition, the above-mentioned protocol control module 12 is also configured with a general D+/D- communication protocol. In this embodiment, the non-PD charging processing unit 13 can realize the communication process in the non-PD charging protocol through the D+ pin and the D- pin. , for example: data negative signal (DataMinus, DM) and data positive signal (Data Positive, DP) charging communication.

It should be noted that the specific principle and process of the above-mentioned DM and DP charging communication are the same as the specific principle and process of the DM and DP charging communication in the prior art, and will not be described in detail here.

In this way, when the charger 1 is connected to a device to be charged that is not standard and does not support PD charging through a data cable, the device to be charged can be generally charged based on the general D+/D- communication protocol.

In a specific implementation, the above-mentioned target power supply 121 may be specifically: a voltage source connected in series with a resistor, and the voltage source may be a VBUS line or a VBUS pin in the charger 1, so that when the charger 1 is connected to the power supply, the target power supply 121 carries current to the CC pin.

The charger provided by the embodiment of the present application includes a first Type-A interface and a protocol control module, and the first Type-A interface includes a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin The pin and the VBUS pin are connected to the first end of the protocol control module. In this way, when the Type-A interface of the data cable connected to the charger also has a matching CC pin, the VBUS pin in the charger can be grounded with the fourth resistor of the device to be charged that supports PD charging through the CC pin , so that the electrical signal on the CC pin changes, so that the data line or the charger can obtain the electrical signal, and accordingly determine that the charging device performs PD charging on the device to be charged. At this time, the protocol control module obtains the charging signal through the CC pin, and can perform PD charging on the device to be charged based on the communication information of the PD charging protocol transmitted on the CC pin, so that the data line using the Type-A interface is connected to the When the charger provided in this application is connected, it can support the PD charging protocol.

As shown in FIG. 1 and FIG. 3 , the data line 2 provided in the embodiment of the present application includes: a second Type-A interface 21 , a Type-C interface 22 , and a Type-C interface 22 connected to the second Type-A interface 21 and the Type-C interface 22 . The cable 23 between said cable 23 is provided with a switching module 24; the second Type-A interface 21 and the Type-C interface 22 both include CC pins, data pins, VBUS pins and GND pins, and all The data pins, VBUS pins and GND pins in the second Type-A interface and the Type-C interface 22 are connected in one-to-one correspondence, and the cable 23 includes a CC wiring, and the two ends of the CC wiring are respectively connected to the first one. Two CC pins in the Type-A interface 21 and CC pins in the Type-C interface 22 .

In operation, the switching module 24 controls the connection or disconnection of the CC wiring based on the electrical signal transmitted on the CC pin and the electrical signal transmitted on the data pin in the second Type-A interface.

In a specific implementation, when the CC wiring is connected, the CC pin in the second Type-A interface 21 is connected with the CC pin in the Type-C interface 22; when the CC wiring is disconnected, the second Type-A The CC pin in the interface 21 and the CC pin in the Type-C interface 22 are disconnected. In addition, the above-mentioned second Type-A interface 21 can be matched with the first Type-A interface 11, for example, the first Type-A interface 11 is a Type-A female socket, and the second Type-A interface 21 is a Type-A male connector , so that the second Type-A interface 21 of the data cable 2 can be matched and connected to the first Type-A interface 11 of the charger 1 .

Of course, in a specific implementation, the above-mentioned first Type-A interface 11 may be a male connector, and the above-mentioned second Type-A interface 21 may be a female socket, which is not specifically limited herein.

Specifically, when the data cable 2 provided by the embodiment of the present application is connected with the charger 1 provided by the embodiment of the present application to form the charging device provided by the embodiment of the present application, the first Type-A interface 11 and the second Type-A interface 21 The CC pins, data pins, VBUS pins and GND pins are connected in one-to-one correspondence, specifically, the CC pins in the first Type-A interface 11 and the CC pins in the second Type-A interface 21 Connection, the data pin in the first Type-A interface 11 is connected with the data pin in the second Type-A interface 21, and the VBUS pin in the first Type-A interface 11 is connected with the second Type-A interface 21. The GND pin in the first Type-A interface 11 is connected with the GND pin in the second Type-A interface 21 .

Wherein, when the charger 1 is connected to the data line 2, the switching module 24 in the data line 2 controls the CC line based on the CC pin in the second Type-A interface 21 and the electrical signal transmitted on the data pin. Connected or disconnected; specifically, when the charging device is connected to the device to be charged, if the CC line is connected, the charging device performs PD charging on the device to be charged; if the CC line is disconnected, the charging device is to be charged The device performs non-PD charging.

In a specific implementation, the following description is made to the working principle that the switching module 24 of the data line 2 determines that the CC wiring is connected or disconnected based on the CC pin in the second Type-A interface 21 and the electrical signal on the data pin:

Case 1

If the data line 2 is connected to the power supply through a conventional charger, since the Type-A interface of the conventional charger does not have a CC pin, no current will flow through the CC pin in the second Type-A interface 21, In this way, the CC trace can be controlled to be disconnected, and the charging signal can be transmitted through the data pin.

Wherein, the above-mentioned conventional charger has the same structure as the charger with Type-A interface in the prior art, and details are not repeated here.

Case 2

When the charging device provided in the embodiment of the present application is connected to a non-standard device to be charged that supports PD charging, the second Type-A interface 21 is matched and connected to the first Type-A interface 11 , so that the second Type-A interface 21 There is a current transmitted by the target power supply 121 on the CC pin of The electrical signal detected on the foot is different from the electrical signal of the device to be charged that does not support PD charging, so that the connection of the CC line can be controlled accordingly to perform PD charging on the non-standard device to be charged that supports PD charging. Specifically, as shown in FIG. 4 , when the Type-C interface 22 of the data line 2 is also connected to an electronic device 3 (eg, a notebook computer, etc.) that supports PD charging, the current CC route transmitted by the target power supply 121 and the PD support The fourth resistor 33 in the charging device to be charged is connected to the ground terminal, so that the voltage value on the CC trace changes, the charging device determines that the device to be charged connected to it supports PD charging based on the voltage value, so based on the CC lead. The feet perform PD communication with the device to be charged, so as to determine PD charging parameters according to the communication content of the PD communication protocol, and perform PD charging on the device to be charged accordingly.

Case three

When the charging device provided by the embodiment of the present application is connected to a device to be charged that does not support PD charging (for example, a conventional mobile phone, etc.), because the device to be charged that does not support PD charging does not have a fourth connection to the CC pin and the ground terminal resistor, so that the voltage value on the CC pin in the second Type-A interface 21 is different from the voltage value when the device to be charged that supports PD charging is connected, the charging device determines based on the voltage value that the device to be charged is not connected to it. Support PD charging, and then perform non-PD communication with the device to be charged based on the data pin, so as to determine charging parameters according to the communication signal transmitted on the data pin, and perform non-PD charging on the device to be charged accordingly.

Case 4

As shown in FIG. 4 , when the electronic device 3 connected to the charging device provided by the embodiment of the present application is a standard device to be charged, the Type-C interface of the standard device to be charged has a third resistor 31 and the The voltage source 32 connected to the third resistor 31, when the Type-C interface 22 on the data line 2 is connected to the standard equipment to be charged, the data pin (D+ pin or D- pin in FIG. 1) passes through the first The three resistors 31 are connected to the voltage source 32, so that a voltage signal corresponding to the output voltage of the voltage source 32 can be detected on the data pin, and the charging device can determine the connection with the standard equipment to be charged according to this, so as to control the The CC wiring is disconnected, and based on the data pin, the standard charging device to be charged is communicated with a preset protocol, so as to perform standard charging for the standard device to be charged.

Case 5

When the device to be charged connected to the charging device provided in the embodiment of the present application is a non-standard device to be charged, the Type-C interface of the non-standard device to be charged is not provided with the third resistor 31 and the third resistor The voltage source 32 connected to 31, when the Type-C interface 22 on the data line 2 is connected to the non-standard equipment to be charged, the data pin (D+/D- in Figure 1) is not connected to the voltage source, so that it can be So that the voltage signal detected on the data pin (D+/D- in Figure 1) is different from the voltage signal when the standard equipment to be charged is connected, the charging equipment can be determined to be connected to the non-standard equipment to be charged accordingly. Thereby, the electrical signal on the CC pin in the second Type-A interface 21 is detected, and when it is determined according to the electrical signal that the device to be charged supports PD charging, the CC is controlled to perform communication; When the electrical signal on the CC pin in 21 determines that the connected device to be charged does not support PD charging, the control CC line is disconnected.

It should be noted that when the device to be charged connected to the charging device is a standard device to be charged that supports PD charging, the priority of PD charging and standard charging can also be set in advance, so that the charging method with a higher priority is used to support the charging device. The standard equipment to be charged that supports PD charging is charged. When the charging method with a higher priority level fails to charge, the charging method with a lower priority level is used to charge the standard equipment to be charged that supports PD charging. If the priority of charging is higher than that of the standard charging, first detect the electrical signal on the CC pin in the second Type-A interface 21, and when it is determined that the device to be charged connected to it supports PD charging, control the connection of the CC line. And perform PD charging on the standard equipment to be charged that supports PD charging; in addition, if PD charging is interrupted or fails after PD charging, control the CC wiring to disconnect, and detect the data pins (D+/D in Figure 1). -), and when it is determined that the device to be charged connected to it is the standard device to be charged, based on the communication signal of the preset communication protocol transmitted by the data pin, the standard device to be charged that supports PD charging is marked. Comes with charging.

Of course, in specific implementation, the priority of PD charging can also be made lower than that of standard charging, then the electrical signal on the data pin (D+/D- in Figure 1) can be detected first, and the electrical signal on the data pin (D+/D- in Fig. When the connected device to be charged is a standard device to be charged, the standard device to be charged is charged as standard based on the communication signal of the preset communication protocol transmitted by the data pin; when it is determined that the device to be charged connected to it is a non-standard device When the device to be charged is detected, the electrical signal on the CC pin in the second Type-A interface 21 is detected, and when it is determined that the device to be charged connected to it supports PD charging, the CC wiring is controlled to be connected, and the standard that supports PD charging is connected. Equip the device to be charged for PD charging; when it is determined that the device to be charged connected to it does not support PD charging, control the CC wiring to disconnect, and based on the communication signal of the general communication protocol transmitted by the data pin, the non-standard device to be charged will be charged. Perform non-PD charging (eg: D+/D- charging of common protocols).

It should be noted that, in the specific implementation, when the charging device provided by the present application is connected to a power source and is not connected to the device to be charged, the CC pin and the data pin in the second Type-A interface 21 (D+ in FIG. 1 ) The electrical signal value on /D-) is different from the electrical signal value when the device to be charged is connected, so that the charging device can be controlled to disconnect the CC wire when the device to be charged is not connected, and the charging device does not transmit power . When the charging device is connected to the device to be charged, the power is transmitted according to the charging parameters negotiated by the charging communication.

The data line 2 provided in the embodiment of the present application can determine the charger connected to the data line according to the electrical signals on the CC pin and the data pin (D+/D- in FIG. 1 ) in the second Type-A interface 21 Whether it supports PD charging, and whether it supports the default communication protocol of standard charging, and whether the device to be charged connected to the data cable is a standard charging that supports standard non-PD charging, and whether it supports PD charging, and based on this Control the connection or disconnection of the CC line, so that when the CC line is connected, the device to be charged is charged by PD; when the CC line is disconnected, the device to be charged is non-PD charged, so that the device with the second Type-A interface is charged. The data line can support PD charging and non-PD charging.

As an optional implementation manner, as shown in FIG. 4 or FIG. 5 , the cable 23 is further provided with a first resistor 231 , and the switching module 24 includes: a control unit 241 and a first switch 242 . One end is connected to the VBUS pin in the second Type-A interface 21 , the first end of the first switch 242 is connected to the second end of the first resistor 231 , and the second end of the first switch 242 is connected to the Type-C interface 22 The CC pin in the connection is connected, the output end of the control unit 241 is connected with the control end of the first switch 242, and the input end of the control unit 241 is connected with the CC pin and the data pin in the second Type-A interface 21 respectively;

Wherein, when the CC wire is connected, the control unit 241 controls the first switch 242 to turn off; when the CC wire is disconnected, the control unit 241 controls the first switch 242 to turn on.

Wherein, the resistance value of the first resistor 231 may be 56KΩ (kiloohm).

In addition, the above-mentioned control unit 241 may be a Microcontroller Unit (MCU), the first detection end of the MCU is connected to the CC pin in the second Type-A interface 21, and the second detection end of the MCU is connected to the data pin (D- pin in Figure 4 or D+ pin in Figure 5) connection.

In a specific implementation, when the CC pin in the Type-C interface 22 is pulled up to the VBUS pin through the first resistor 231, and the data line 2 is connected to the device to be charged that supports the PD communication protocol, it can trigger the support of the PD communication protocol. The PD communication function of the device to be charged.

It should be noted that, in addition to the above-mentioned first switch 242, the above-mentioned switching module 24 may also include other switching units. The control end of the switching unit is connected to the MCU, so that the switching unit can be used to switch the first switch under the control of the MCU. The connection state between the CC pin in the Type-A interface 21 and the CC pin in the Type-C interface 22 .

Further, as shown in FIG. 4 or FIG. 5 , the switching module 24 further includes: a second switch 243 , a third switch 244 and a second resistor 245 ; the output end of the control unit 241 is also connected with the control end of the second switch 243 and the first The control terminals of the three switches 244 are connected, the first terminal of the second switch 243 is connected to the CC pin in the second Type-A interface 21 , the second terminal of the second switch 243 is connected to the first terminal of the second resistor 245 , The second end of the second resistor 245 is connected to the GND pin of the second Type-A interface 21 , the first end of the third switch 244 is connected to the CC pin of the second Type-A interface 21 , and the third switch 244 The second end is connected to the CC pin in the Type-C interface 22 .

In operation, the control unit 241 controls the third switch 244 to close and controls the first switch 242 and the second switch 243 to open based on the electrical signals transmitted on the CC pin and the data pin in the second Type-A interface 21, Alternatively, the control unit 241 controls the third switch 244 to open and controls the first switch 242 and the second switch 243 to close based on the electrical signals transmitted on the CC pin and the data pin in the second Type-A interface 21 .

In one embodiment, the first switch 242 , the second switch 243 and the third switch 244 may be switches as shown in FIG. 4 ; in another embodiment, the first switch 242 , the second switch 242 , the second switch 244 The switch 243 and the third switch 244 may be triodes as shown in FIG. 5 .

Of course, the above-mentioned first switch 242 , second switch 243 and third switch 244 may also be other transistors such as MOS transistors, which are not exhaustive here.

In this embodiment, the switching module 24 is provided as the control unit 241 and the first switch 242 , the second switch 243 and the third switch 244 controlled by the illustrated control unit 241 , which can simplify the structure and control logic of the switching module 24 .

As an optional implementation manner, the data pins include D+ pins and D- pins, and the input end of the control unit 241 is connected to at least one of the D+ pins and the D- pins.

In a specific implementation, both the D+ pin and the D- pin in the charger 1 are connected to the protocol control module 12, so as to perform D+/D- based charging on the device to be charged according to the charging signal transmitted on the D+ pin and the D- pin. The charging method of the communication protocol. And at least one of the D+ pin and the D- pin is connected to the input end of the control unit 241, for example: as shown in FIG. 4, the D- pin is connected to the input end of the control unit 241, or as shown in FIG. 5 , the D+ pin is connected to the input end of the control unit 241 .

Of course, in a specific implementation, both the D+ pin and the D- pin can be connected to the input end of the control unit 241 .

Specifically, the first Type-A interface 11 , the second Type-A interface 21 and the Type-C interface 22 all include a D+ pin and a D- pin, and the D+ pin, the first Type-A interface 11 The D+ pin in the Type-A interface 21 and the D+ pin in the Type-C interface 22 are connected, the D-pin in the first Type-A interface 11 and the D-pin in the second Type-A interface 21 are connected. The pin and the D-pin in the Type-C interface 22 are connected.

In this embodiment, the charging device can transmit the DP/DM signal through the D+ pin and the D- pin, so as to realize non-PD charging of the device to be charged according to the DP/DM signal, and the control unit 241 can detect the D+ pin and the D- pin. The electrical signal on the D-pin is used to judge whether the device to be charged connected to the data line 2 is a standard device to be charged.

As an optional implementation manner, when the charging device provided in the embodiment of the present application is connected to the device to be charged, if the device to be charged is the first device to be charged, the CC line is connected; If it is the second device to be charged, the CC line is disconnected;

Wherein, when the switching module 24 determines that the device to be charged does not match the charging device and supports PD charging based on the electrical signal transmitted on the CC pin and the data pin in the second Type-A interface 21, the device to be charged The device is the first device to be charged; the switching module 24 determines that the device to be charged matches the charging device or the When the device to be charged does not support PD charging, the device to be charged is the second device to be charged.

The matching between the device to be charged and the charging device can be understood as: both the device to be charged and the charging device are configured with a preset communication protocol, and the communication signal of the preset communication protocol is transmitted through a data pin.

In addition, when the device to be charged connected to the charging device is a non-standard device to be charged that does not support PD charging, a general DP/DM communication protocol transmitted through a data pin is used to implement the charging handshake.

In this embodiment, for the standard equipment to be charged, the charging handshake is performed according to the preset communication protocol transmitted through the data pin; for the equipment to be charged that is not standard and supports PD charging, the PD communication protocol transmitted by the CC pin is used. Carry out charging handshake; for devices to be charged that are not standard and do not support PD charging, the charging handshake is performed according to the general communication protocol transmitted through the data pin, so that the charging device provided by the embodiment of the present application can be applied to a variety of devices to be charged. device to charge.

As an optional implementation manner, when the charging device is connected to the first device to be charged, the switching module 24 also transmits a control signal via the CC pin in the second Type-A interface 21, and the control The signal is used to control the charger 1 to stop outputting an electrical signal via the VBUS pin within a preset time length, and control the CC wiring to be connected when the charger 1 outputs an electrical signal via the VBUS pin;

Wherein, before the charging device is connected to the device to be charged, the switching module 24 also controls the CC wiring to be disconnected.

In a specific implementation, the above-mentioned preset time length is greater than or equal to the power interruption time specified by the PD communication protocol.

In this embodiment, the control signal transmitted by the switching module 24 triggers the charger 1 to interrupt the electrical signal transmitted on the VBUS pin within a preset time length, and restore power supply after the preset time length, so as to pass the PD communication protocol When charging the device to be charged, the electrical signal interruption time complies with the PD communication protocol, which avoids setting a control module in the charger 1 to control the charger 1 to interrupt the electrical signal transmitted on the VBUS pin within a preset time length. As a result, the structure of the charger 1 is complicated.

Next, taking the data line 2 shown in FIG. 4 or FIG. 5 as an example, the switching module 24 for the data line 2 switches the CC pin of the second Type-A interface 21 and the electrical signal on the data pin to the CC pin The working principle of the connection or disconnection of the trace is as follows:

Among them, when the charger 1 shown in FIG. 4 or FIG. 5 is connected to the power supply, the default output voltage is 5V (volts), and the target power supply 121 provides a constant current of 550mA (milliamperes), and the resistance value of the first resistor 231 is 56KΩ ( KΩ), the resistance value of the second resistor 245 is 5.1KΩ.

In addition, the standard equipment to be charged 3 matched with the charging equipment provided in this application connects the data pins in the Type-C interface 22 to the voltage source 32 via a third resistor 31, and the resistance value of the third resistor 31 is 10KΩ , and the voltage value of the voltage source 32 is 3.3V. In addition, when the charging device provided by the present application is connected to the device to be charged that supports PD charging, the CC pin in the Type-C interface 22 is also connected to the ground terminal through a fourth resistor 33, and the resistance value of the fourth resistor 33 is 5.1 KΩ.

Case 1

If a voltage of 3.3V is detected on the data pin (D+ pin or D- pin), it is determined that the charging device provided in this embodiment of the application is connected to the standard to-be-charged device, and has passed the D+ pin and D- pin. The DP/DM communication signal transmitted on the pin completes the charging handshake, and at this time, the switching module 24 can control the CC wiring to be disconnected.

Case 2

If a voltage of 1.68V is detected on the CC pin in the second Type-A interface 21, the switching module 24 determines the charger connected to the data line 2 (specifically, the charger 1 shown in FIG. 4 or FIG. ) and the device to be charged both support PD charging, so that when the device to be charged does not complete the charging handshake through the DP/DM communication signal, the switching module 24 can connect the CC wiring.

Case three

If a voltage of 1.98V is detected on the CC pin of the second Type-A interface 21, the switching module 24 determines that the charger connected to the data line 2 is a charger that supports PD charging and matches the data line 2 (specifically, it may be The charger 1) shown in FIG. 4 or FIG. 5 is not connected to the device to be charged. At this time, the switching module 24 can disconnect the CC wiring.

Case 4

If a 0.4V voltage is detected on the CC pin in the second Type-A interface 21, the switching module 24 determines that the charger connected to the data line 2 is a charger that does not support PD charging or a charger that does not match the data line 2 At this time, the switching module 24 can disconnect the CC wiring.

In addition, the second switch 243 as shown in FIG. 4 can also be turned off while the CC trace is disconnected.

It should be noted that, in practical applications, the resistance values of the first resistor and the second resistor, the current value output by the current source, the voltage value output by the voltage source, etc. may be inconsistent with the above parameters. - The electrical signal value detected on the CC pin in the A interface 21 and the electrical signal value detected on the data pin can distinguish whether the charger and the device to be charged support PD charging, and whether the device to be charged is a standard standby A charging device is sufficient, which is not specifically limited here.

In addition, as shown in FIG. 6 , in the case where the above-mentioned data pins are D+ pins and D- pins, the first side of the first Type-A interface 11 is provided with a GND pin, a D+ pin, and a D- pin. pin and VBUS pin, the second side of the first Type-A interface 11 is provided with a CC pin, and the first side and the second side of the first Type-A interface 11 are opposite sides.

Correspondingly, as shown in FIG. 7 , the third side of the second Type-A interface 21 is provided with a GND pin, a D+ pin, a D- pin and a VBUS pin. CC pins are provided on the side, and the third side and the fourth side of the second Type-A interface 21 are opposite sides. And when the first Type-A interface 11 is connected with the second Type-A interface 21, the GND pins in the first Type-A interface 11 and the second Type-A interface 21 are connected correspondingly, the D+ pins are connected correspondingly, and the D+ pins are connected correspondingly. - The pins are connected correspondingly, the VBUS pins are connected correspondingly, and the CC pins are connected to the CC pins.

In this way, the distribution positions of the above-mentioned GND pins, D+ pins, D- pins and VBUS pins are the same as the GND pins, D+ pins, D- pins and VBUS pins in the Type-A interface in the prior art. The distribution positions are the same, so that they can be matched and connected with the conventional Type-A interface, so as to realize the conventional functions of the GND pin, the D+ pin, the D- pin and the VBUS pin, so that the charger 1 provided in the embodiment of the present application can be It is connected to a data line with a conventional Type-A interface, and the data line 2 provided in this embodiment of the present application can be connected to a charger with a conventional Type-A interface.

It should be noted that the distribution positions of the pins in the first Type-A interface 11 can also be exchanged or changed, which is not specifically limited here. The structures and working principles of the VBUS pin, GND pin, D+ pin and D- pin are the same as the VBUS pin, GND pin, D+ pin and D- pin in the first Type-A interface 11 in the prior art The structure and working principle of the pins are the same, and will not be described in detail here.

Referring to FIG. 8 , taking the charging device shown in FIG. 4 or FIG. 5 as an example, the working principle diagram of the charging device provided by the embodiment of the present application is illustrated as an example. The charging device may specifically perform the following processes:

Step 801 , when the charger is connected to a power source, the protocol control module controls the charger to be in a preset working state.

Among them, in the above-mentioned preset working state, the VBUS pin outputs a 5V voltage.

In step 802, the MCU on the data line controls the first switch 242 and the second switch 243 to be turned on, and the third switch 244 is turned off.

Step 803: Determine whether the charging device is connected to the first preset device to be charged.

The above-mentioned first device to be charged may be a device that does not support PD charging, such as a mobile phone.

In addition, if the determination result of step 803 is "YES", step 804 is performed, and if the determination result of step 803 is "NO", step 805 is performed.

Step 804: Determine whether the first preset device to be charged is a standard device to be charged.

Wherein, when the judgment result of step 804 is "Yes", step 806 is executed, and when the judgment result of step 804 is "No", step 807 is executed.

Step 806, the charger performs charging communication with the device to be charged through the D+ pin and the D- pin.

Among them, the above-mentioned charging communication between the charger and the device to be charged through the D+ pin and the D- pin can also be understood as: the charger performs a private protocol on the standard device to be charged (also called: a preset communication protocol) DP/DM charging communication.

Step 805: Determine whether the charging device is connected to the second preset device to be charged.

In a specific implementation, the above-mentioned second preset device to be charged may be a notebook computer that supports PD charging, etc., which is not specifically limited herein.

In addition, if the determination result of step 805 is "Yes", step 807 is performed, and if the determination result of step 805 is "No", step 802 is repeatedly performed.

Step 807, the MCU requests the charger to disconnect the VBUS pin within a preset time length through the CC pin.

Wherein, the above-mentioned preset time length is greater than or equal to the power interruption time specified by the PD communication protocol. And while the VBUS pin is disconnected, the charger does not transmit power to the outside.

808. When the VBUS pin restores power, the MCU controls the first switch 242 and the second switch 243 to be disconnected, and the third switch 244 to be connected.

The charging device provided by the embodiment of the present application can determine whether the device to be charged is a standard device to be charged and whether it supports PD charging according to the electrical signals detected on the CC pin and the data pin of the second Type-A interface 21 , so as to connect the CC pin or disconnect the CC pin according to the needs of the device to be charged, so as to realize the switching between the PD charging mode and the non-PD charging mode between the device to be charged charging method.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. In addition, it should be noted that the scope of the methods and electronic devices in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved To perform functions, for example, the methods described may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

A charger, comprising: a first Type-A interface and a protocol control module;

The first Type-A interface includes a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin and the VBUS pin are connected to the first end of the protocol control module, and the the data pin is connected with the second end of the protocol control module;

When the charger is connected to the device to be charged through a data cable, if the protocol control module acquires the communication signal transmitted through the CC pin, the charger performs PD charging on the device to be charged; If the protocol control module acquires the communication signal transmitted through the data pin, the charger is used to perform non-PD charging on the device to be charged.
A data cable, comprising: a second Type-A interface, a first Type-C interface, and a cable connected between the second Type-A interface and the first Type-C interface, the cable There is a switching module on it;

The second Type-A interface and the first Type-C interface include CC pins, data pins, VBUS pins and GND pins, and the second Type-A interface and the first Type-A interface - The data pins, VBUS pins and GND pins in the C interface are connected in one-to-one correspondence, and the cable includes a CC trace, and both ends of the CC trace are respectively connected to the second Type-A interface. CC pins and CC pins in the first Type-C interface;

The switching module controls the CC wiring to be connected or disconnected based on the electrical signal transmitted on the CC pin and the electrical signal transmitted on the data pin in the second Type-A interface.
The data cable according to claim 2, wherein a first resistor is further provided on the cable, the switching module comprises: a control unit and a first switch, the first end of the first resistor is connected to the first end of the first resistor. The VBUS pin in the two Type-A interfaces is connected, the first end of the first switch is connected to the second end of the first resistor, and the second end of the first switch is connected to the first Type-C The CC pin in the interface is connected, the output end of the control unit is connected with the control end of the first switch, the input end of the control unit is connected with the CC pin in the second Type-A interface and the The data pins are connected separately;

Wherein, when the CC line is connected, the control unit controls the first switch to be turned off; when the CC line is disconnected, the control unit controls the first switch to be turned on.
The data line according to claim 3, wherein, the switching module further comprises: a second switch, a third switch and a second resistor;

The control unit is respectively connected to the control end of the second switch and the control end of the third switch, and the first end of the second switch is connected to the CC pin in the second Type-A interface, The second end of the second switch is connected to the first end of the second resistor, the second end of the second resistor is connected to the GND pin in the second Type-A interface, and the third The first end of the switch is connected to the CC pin in the second Type-A interface, and the second end of the third switch is connected to the CC pin in the first Type-C interface;

The control unit controls the third switch to close and controls the first switch and the first switch based on the electrical signal transmitted on the CC pin and the data pin in the second Type-A interface. The second switch is turned off, or the control unit controls the third switch to turn off and controls the third switch to turn off based on the CC pin in the second Type-A interface and the electrical signal transmitted on the data pin A switch and the second switch are closed.
The data line according to claim 3 or 4, wherein the data pins include D+ pins and D- pins, and the input end of the control unit is connected to the D+ pins and the D- pins. at least one connection.
A charging device, comprising a charger and a data cable connected to the charger, the charger is the charger according to claim 1, and the data cable is according to any one of claims 2-5 data line, the CC pins, data pins, VBUS pins and GND pins in the first Type-A interface and the second Type-A interface are connected in one-to-one correspondence;

Wherein, when the charger is connected to the data line, the switching module in the data line is based on the CC pin in the second Type-A interface and the electrical signal transmitted on the data pin , control the connection or disconnection of the CC line;

When the charging device is connected to the device to be charged, if the CC wiring is connected, the charging device performs PD charging on the device to be charged; if the CC wiring is disconnected, the charging device performs PD charging on the device to be charged Non-PD charging.
The charging device according to claim 6, wherein when the charging device is connected to the device to be charged, if the device to be charged is the first device to be charged, the CC line is connected; If the device is the second device to be charged, the CC wiring is disconnected;

Wherein, when the switching module determines that the device to be charged does not match the charging device and supports PD charging based on the CC pin in the second Type-A interface and the electrical signal transmitted on the data pin, The device to be charged is the first device to be charged; the switching module determines the device to be charged and the device to be charged based on the CC pin in the second Type-A interface and the electrical signal transmitted on the data pin. When the charging device matches or the device to be charged does not support PD charging, the device to be charged is the second device to be charged.
The charging device according to claim 7, wherein when the charging device is connected to the first device to be charged, the switching module further transmits a control signal through a CC pin in the second Type-A interface, The control signal is used to control the charger to stop outputting an electrical signal via the VBUS pin within a preset time length, and to control the CC wiring to be connected when the charger outputs an electrical signal via the VBUS pin;

Wherein, before the charging device is connected to the device to be charged, the switching module further controls the CC wiring to be disconnected.
An electronic device, the electronic device is a device to be charged matched with the charging device according to any one of claims 6-8, the electronic device comprises a second Type-C interface, a third resistor and a power supply unit, The second Type-C interface includes a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin, data in the second Type-C interface and the first Type-C interface The pins, the VBUS pins and the GND pins are connected in one-to-one correspondence, and the data pins in the second Type-C interface are also connected to the power supply unit through the third resistor.
The electronic device according to claim 9, wherein the charging device comprises a fourth resistor, and the CC pin in the second Type-C interface is further connected to the second Type-C through the fourth resistor GND pin in the interface.