CN111817380B - Charger, data line, charging equipment and electronic equipment - Google Patents

Charger, data line, charging equipment and electronic equipment Download PDF

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Publication number
CN111817380B
CN111817380B CN202010673758.7A CN202010673758A CN111817380B CN 111817380 B CN111817380 B CN 111817380B CN 202010673758 A CN202010673758 A CN 202010673758A CN 111817380 B CN111817380 B CN 111817380B
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Prior art keywords
pin
interface
type
charged
charging
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CN111817380A (en
Inventor
李达寰
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN202010673758.7A priority Critical patent/CN111817380B/en
Publication of CN111817380A publication Critical patent/CN111817380A/en
Priority to PCT/CN2021/106003 priority patent/WO2022012527A1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application discloses charger, data line, battery charging outfit and electronic equipment belongs to battery charging outfit technical field. Wherein, the charger includes: the device 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 are connected with a first end of the protocol control module, and the data pin is connected with a second end of the protocol control module; under the condition that the charger is connected with the equipment to be charged through the data line, if the protocol control module acquires the communication signal transmitted by the CC pin, the charger charges the PD of the equipment to be charged; and if the protocol control module acquires the communication signal transmitted by the data pin, the charger is used for carrying out non-PD charging on the equipment to be charged. The embodiment of the application can support the PD quick charging function when the charger is connected with the data line with the Type-A interface.

Description

Charger, data line, charging equipment and electronic equipment
Technical Field
The application belongs to the technical field of communication, and particularly relates to a charger, a data line, charging equipment and electronic equipment.
Background
With the development of science and technology, the application of rapid charging is more and more extensive.
In the related art, a Power Delivery (PD) protocol is usually used to rapidly charge a device such as a notebook computer, and in order to support the PD protocol for charging, the charger needs to use a CC signal line for communication. For a charger adopting a first Standard (Type-A or Standard-A) interface, the charger cannot support PD protocol charging because it communicates through a D +/D-signal line. However, the most widely used data line is currently a data line with a Type-a interface, so that the Type-a interface on a conventional data line does not match the Type-C interface on a charger that supports PD protocol charging.
Disclosure of Invention
The embodiment of the application aims to provide a charger, a data line, a charging device and an electronic device, and the problem that the data line adopting a Type-A interface is not matched with a charging interface of the charger supporting a PD protocol can be solved.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a charger, including: the device 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 are connected with a first end of the protocol control module, and the data pin is connected with a second end of the protocol control module;
under the condition that the charger is connected with the equipment to be charged through a data line, if the protocol control module acquires the communication signal transmitted by the CC pin, the charger carries out PD charging on the equipment to be charged; and if the protocol control module acquires the communication signal transmitted by the data pin, the charger is used for carrying out non-PD charging on the equipment to be charged.
In a second aspect, an embodiment of the present application provides a data line, including: the device comprises a second Type-A interface, a Type-C interface and a cable connected between the second Type-A interface and the Type-C interface, wherein a switching module is arranged on the cable;
the second Type-A interface and the Type-C interface respectively comprise a CC pin, a data pin, a VBUS pin and a GND pin, the data pin, the VBUS pin and the GND pin in the second Type-A interface and the Type-C interface are correspondingly connected one by one, the cable comprises a CC (contact Type connector) wire, and two ends of the CC wire are respectively connected with the CC pin in the second Type-A interface and the CC pin in the Type-C interface;
the switching module controls the CC wiring to be connected or disconnected based on the electric signals transmitted on the CC pin and the electric signals 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 line connected to the charger, where the charger is the charger of the first aspect, the data line is the data line of the second aspect, and a CC pin, a data pin, a VBUS pin, and a GND pin in a Type-a interface and a second Type-a interface are connected in a one-to-one correspondence manner;
under the condition that the charger is connected with the data line, the switching module in the data line controls the CC wiring to be connected or disconnected based on the CC pin in the second Type-A interface and the electric signals transmitted on the data pin;
when the charging equipment is connected with the equipment to be charged, if the CC wiring is communicated, the charging equipment carries out PD charging on the equipment to be charged; and if the CC wiring is disconnected, the charging equipment carries out non-PD charging on the equipment to be charged.
In a fourth aspect, an embodiment of the present application provides electronic equipment, where the electronic equipment is a device to be charged, which is matched with the charging device of the third aspect, and the electronic equipment includes a second Type-C interface, a third resistor, and a power supply unit, where the second Type-C interface includes a CC pin, a data pin, a VBUS pin, and a GND pin, and the CC pin, the data pin, the VBUS pin, and the GND pin in the second Type-C interface and the first Type-C interface are connected in a one-to-one correspondence manner, and the data pin in the second Type-C interface is further connected to the power supply unit through the third resistor.
The charger provided by the embodiment of the application comprises a first Type-A interface and a protocol control module, wherein the first Type-A interface comprises a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin and the VBUS pin are connected with a first end of the protocol control module. Therefore, when the Type-A interface of the data line connected with the charger also has a matched CC pin, the VBUS pin in the charger can be grounded through the CC pin and a resistor in the device to be charged supporting PD charging, so that an electric signal on the CC pin changes, the data line or the charger can acquire the electric signal, the charging device is determined to perform PD charging on the device to be charged according to the electric signal, at the moment, the protocol control module acquires a charging signal through the CC pin, and the device to be charged can be subjected to PD charging based on communication information of the PD charging protocol transmitted on the CC pin, so that the data line adopting the Type-A interface can support the PD charging protocol when being connected with the charger provided by the application.
Drawings
Fig. 1 is a circuit diagram of a first charging device provided in an embodiment of the present application;
fig. 2 is a circuit diagram of a charger according to an embodiment of the present application;
FIG. 3 is a circuit diagram of a data line according to an embodiment of the present application;
fig. 4 is a circuit diagram of a second charging apparatus provided in an embodiment of the present application;
fig. 5 is a circuit diagram of a third charging apparatus provided in an embodiment of the present application;
FIG. 6 is a schematic pin diagram of a Type-A female socket in a charger according to an embodiment of the present application;
FIG. 7 is a pin diagram of a Type-A interface in a data line according to an embodiment of the present disclosure;
fig. 8 is a flowchart of an operation of a charging device according to an 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 drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The charger, the data line, the charging device and the electronic device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Please refer to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a circuit diagram of a charging apparatus according to an embodiment of the present disclosure; fig. 2 is a circuit diagram of a charger provided by an embodiment of the present application; fig. 3 is a circuit diagram of a data line provided in an embodiment of the present application.
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 matching). When the charging device provided by the embodiment of the application is connected with the electronic device provided by the embodiment of the application, the electronic device can be subjected to non-PD charging through a data pin or PD charging through a 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, the non-standard device to be charged may also be subjected to PD charging or non-PD charging, and the specific charging mode may be determined according to a charging protocol negotiation with the non-standard device to be charged.
In specific implementation, the charging device provided in the embodiment of the present application can determine, by detecting electrical signals on the data pin and the CC pin, whether the device to be charged connected to the charging device is a standard device to be charged.
Wherein, the above-mentioned data pin can be the data pin that has in the current Type-C interface, for example: in a specific implementation, the data pin may also be other pins, such as: signal transmission pins (TX pin and RX pin) in a third generation universal serial bus (USB 3.0), and the like. For convenience of description, the embodiment shown in fig. 1 to 5 is described by taking only the example that the data pins include a D + pin and a D-pin, and is not 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, the D-pin, the CC pin, the VBUS pin, and the GND pin in the second Type-C interface are connected to the D + pin, the D-pin, the CC pin, the VBUS pin, and the GND pin in the first Type-C interface 22 of the data line 2 in a one-to-one correspondence manner, the D + pin in the second Type-C interface is connected to the power supply unit 32 through a third resistor 31 (i.e., a pull-up resistor), and the CC pin in the second Type-C interface is connected to the GND through a fourth resistor 33 (i.e., a pull-down resistor).
In application, when the charging device connects the power supply to 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 of the CC pin is grounded through the fourth resistor 33, which can also change the electrical signal on the CC pin.
The pin D + is connected to the power supply unit 32 through the third resistor 31, so that the charging device knows that the charging device is connected to the standard charging device based on an electrical signal on the pin D +.
In addition, the CC pin is grounded through the fourth resistor 33, so that the charging device knows to be connected to the device to be charged supporting PD charging based on the electrical signal on the CC pin.
It should be noted that, in specific implementation, the charging device provided in the embodiment of the present application may also be capable of being matched with a device to be charged that does not support PD charging, that is, a CC pin in the device to be charged that is matched with the charging device provided in the embodiment of the present application is not grounded through a pull-down resistor. In addition, the data pin connected to the power supply unit 32 through the third resistor 31 may also be a D-pin, which is not particularly limited herein.
Referring to fig. 1 and 2, the charger 1 includes: a first Type-a interface 11 and a protocol control module 12; the first Type-A interface 11 comprises a CC pin, a data pin, a VBUS pin and a GND pin, the protocol control module 12 comprises a target power supply 121, the CC pin and the target power supply 121 are respectively connected with a first end of the protocol control module 12, and the data pin is connected with a second end of the protocol control module 12;
in operation, under the condition that the charger 1 is connected with the device to be charged through the data line 2, if the protocol control module 12 acquires a 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 obtains the communication signal transmitted through the data pin, the charger 1 is configured to perform non-PD charging on the device to be charged.
In a specific implementation, the above PD charging may be understood as: based on the fast charging mode of the PD communication protocol, communication signals of the PD communication protocol are transmitted via the CC pin.
It should be noted that, in the embodiment shown in fig. 1, the data pins are labeled as: the D + pin or the D-pin (i.e., D +/D-), and in practical applications, the first Type-a interface may include the D + pin and the D-pin, and at least one of the D + pin and the D-pin is connected to the switching module 24.
In addition, the non-PD charging may be a charging mode based on a communication signal transmitted by a data pin, for example: in the case where the data pins are the D + pin and the D-pin, the non-PD charging may be a manner of charging based on a charging signal of a D +/D-communication protocol (i.e., a communication protocol of a communication signal transmitted through the D + pin and the D-pin). Specifically, the protocol control module 12 may be preconfigured with a PD communication protocol and a preset communication protocol, where the preset communication protocol is a communication protocol of a communication signal transmitted through a data pin, and when the charger 1 is connected to a standard device to be charged through a standard data line, the standard device to be charged can be charged based on the preset communication protocol, where the standard device to be charged can be understood as: the charging equipment to be charged is configured with the charging equipment provided by the application, and the preset communication protocol is configured in the charging equipment to be charged. In addition, the protocol control module 12 is further configured with a general D +/D-communication protocol, and in this embodiment, the non-PD charging processing unit 13 can implement a communication process in the non-PD charging protocol through a D + pin and a D-pin, for example: data negative (DM) and Data Positive (DP) signals.
It should be noted that the specific principle and process of the DM and DP charging communication are the same as those of the DM and DP charging communication in the prior art, and are not specifically described herein.
Thus, when the charger 1 is connected with a device to be charged which is not standard and does not support PD charging through a data line, the device to be charged can be normally charged based on the general D +/D-communication protocol.
In a specific implementation, the target power supply 121 may specifically be: a voltage source in series with the resistor, which may be a VBUS line or a VBUS pin within the charger 1, to supply current to the CC pin when the charger 1 is connected to a power source, the target power source 121.
The charger provided by the embodiment of the application comprises a first Type-A interface and a protocol control module, wherein the first Type-A interface comprises a CC pin, a data pin, a VBUS pin and a GND pin, and the CC pin and the VBUS pin are connected with a first end of the protocol control module. Therefore, when the Type-A interface of the data line connected with the charger also has a matched CC pin, the VBUS pin in the charger can be grounded with the fourth resistor of the device to be charged supporting PD charging through the CC pin, so that the electric signal on the CC pin is changed, the data line or the charger can obtain the electric signal, and the charging device is determined to perform PD charging on the device to be charged according to the electric signal. At this time, the protocol control module acquires 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 when the data line adopting the Type-a interface is connected to the charger provided by the application, the PD charging protocol can be supported.
As shown in fig. 1 and fig. 3, a data line 2 provided in an embodiment of the present application includes: a switching module 24 is arranged on the second Type-A interface 21, the Type-C interface 22 and a cable 23 connected between the second Type-A interface 21 and the Type-C interface 22, wherein the cable 23 is provided with the switching module 24; second Type-A interface 21 and Type-C interface 22 all include CC pin, data pin, VBUS pin and GND pin, just data pin, VBUS pin and GND pin one-to-one in second Type-A interface and the Type-C interface 22 are connected, and cable 23 includes the CC and walks the line, the CC pin in the CC both ends of walking the line connection second Type-A interface 21 and the CC pin in the Type-C interface 22 respectively.
In operation, the switching module 24 controls the CC wiring to be connected or disconnected based on the electrical signal transmitted through the CC pin and the electrical signal transmitted through the data pin in the second Type-a interface.
In specific implementation, when the CC traces are connected, the CC pins in the second Type-a interface 21 are connected with the CC pins in the Type-C interface 22; when the CC is wired to be disconnected, the CC pin in the second Type-A interface 21 and the CC pin in the Type-C interface 22 are disconnected. In addition, the second Type-a interface 21 can be matched with the first Type-a interface 11, for example: first Type-A interface 11 is the female seat of Type-A, and second Type-A interface 21 is public head of Type-A to make the second Type-A interface 21 of above-mentioned data line 2 can with the first Type-A interface 11 accordant connection of charger 1.
Of course, in a specific implementation, the first Type-a interface 11 may be a male connector, and the second Type-a interface 21 may be a female connector, which is not limited herein.
Specifically, when the data line 2 provided by the embodiment of the present application and the charger 1 provided by the embodiment of the present application are connected to form the charging device provided by the embodiment of the present application, the CC pin, the data pin, the VBUS pin, and the GND pin in the first Type-a interface 11 and the second Type-a interface 21 are connected in a one-to-one correspondence manner, specifically, the CC pin in the first Type-a interface 11 is connected to the CC pin in the second Type-a interface 21, the data pin in the first Type-a interface 11 is connected to the data pin in the second Type-a interface 21, the VBUS pin in the first Type-a interface 11 is connected to the VBUS pin in the second Type-a interface 21, and the GND pin in the first Type-a interface 11 is connected to the GND pin in the second Type-a interface 21.
Under the condition that the charger 1 is connected with the data line 2, the switching module 24 in the data line 2 controls the connection or disconnection of the CC wiring based on the electrical signals transmitted on the CC pin and the data pin in the second Type-A interface 21; specifically, when the charging device is connected with the device to be charged, if the CC wiring is communicated, the charging device performs PD charging on the device to be charged; and if the CC wiring is disconnected, the charging equipment carries out non-PD charging on the equipment to be charged.
In specific implementation, the following description is made on the working principle that the switching module 24 of the data line 2 determines connection or disconnection of the CC trace based on the CC pin in the second Type-a interface 21 and the electrical signal on the data pin:
situation one
If the data line 2 is connected with the power supply through the conventional charger, the Type-A interface of the conventional charger does not have a CC pin, so that no current flows through the CC pin in the second Type-A interface 21, the CC wiring is controlled to be disconnected accordingly, and a charging signal is transmitted through the data pin.
The conventional charger has the same structure as a charger with a Type-a interface in the prior art, and is not described herein again.
Situation two
When the charging device provided by the embodiment of the application is connected with a non-standard charging device supporting PD charging, the second Type-a interface 21 is connected with the first Type-a interface 11 in a matching manner, so that a current transmitted by the target power supply 121 is provided on a CC pin in the second Type-a interface 21, and when the current flows to the charging device supporting PD charging through the CC pin in the Type-C interface 22, an electrical signal detected on the CC pin in the second Type-a interface 21 is different from an electrical signal detected when the charging device supporting PD charging is to be charged, so that CC routing communication can be controlled accordingly, and PD charging is performed on the non-standard charging device supporting PD charging. Specifically, as shown in fig. 4, when the Type-C interface 22 of the data line 2 is further connected to an electronic device 3 (e.g., a notebook computer, etc.) supporting PD charging, the current CC transmitted by the target power supply 121 and the fourth resistor 33 in the device to be charged supporting PD charging are connected to the ground terminal, so that the voltage value on the CC trace changes, and the charging device determines that the device to be charged connected thereto supports PD charging based on the voltage value, and performs PD communication with the device to be charged based on the CC pin, so as to determine PD charging parameters according to the communication content of the PD communication protocol, and accordingly performs PD charging on the device to be charged.
Situation three
When the charging device provided in the embodiment of the application is connected to a device to be charged that does not support PD charging (e.g., a conventional mobile phone, etc.), because the device to be charged that does not support PD charging does not have a fourth resistor connected to the CC pin and the ground, the voltage value at 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 connected thereto does not support PD charging, and then performs non-PD communication with the device to be charged based on the data pin, so as to determine a charging parameter according to a communication signal transmitted on the data pin, and accordingly perform non-PD charging on the device to be charged.
Situation four
As shown in fig. 4, when the electronic device 3 connected to the charging device provided in this embodiment of the present application is a standard device to be charged, a third resistor 31 and a voltage source 32 connected to the third resistor 31 are provided in a Type-C interface of the standard device to be charged, and when the Type-C interface 22 on the data line 2 is connected to the standard device to be charged, a data pin (a D + pin or a D-pin in fig. 1) is connected to the voltage source 32 through the third resistor 31, so that a voltage signal corresponding to an output voltage of the voltage source 32 can be detected on the data pin, and the charging device can determine that the data pin is connected to the standard device to be charged, thereby controlling the CC wiring to be disconnected accordingly, and performing charging communication of a preset protocol on the standard device to be charged based on the data pin, so as to perform standard charging on the standard device to be charged.
Case five
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 third resistor 31 and the voltage source 32 connected to the third resistor 31 are not arranged in the Type-C interface of the non-standard device to be charged, and when the Type-C interface 22 on the data line 2 is connected to the non-standard device to be charged, the data pin (D +/D-) in fig. 1 is not connected to the voltage source, so that the voltage signal detected on the data pin (D +/D-) in fig. 1 is different from the voltage signal when the standard device to be charged is connected, and the charging device may determine to be connected to the non-standard device to be charged according to the voltage signal, thereby detecting the electrical signal on the CC pin in the second Type-a interface 21, and when it is determined according to the electrical signal that the device to be charged connected to the charging device to be charged supports PD charging, control CC to perform communication; and when the device to be charged connected with the CC pin is determined not to support PD charging according to the electric signal on the CC pin in the second Type-A interface 21, the CC wiring is controlled to be 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 may also be preset, and the standard device to be charged that supports PD charging is charged by preferentially adopting a charging method with a high priority, and when the charging method with the high priority fails to charge, the standard device to be charged that supports PD charging is charged by adopting a charging method with a low priority, for example: if the priority of PD charging is higher than that of standard charging, firstly detecting an electric signal on a CC pin in a second Type-A interface 21, controlling the CC wiring to be communicated when the device to be charged connected with the CC wiring is determined to support PD charging, and carrying out PD charging on the standard charging device to be charged supporting PD charging; in addition, after the PD charging is performed, if the PD charging is interrupted or fails, the CC wiring is controlled to be disconnected, an electrical signal on a data pin (D +/D-in fig. 1) is detected, and when it is determined that the device to be charged connected to the CC wiring is the standard device to be charged, the standard device to be charged supporting the PD charging is subjected to standard charging based on a communication signal of a preset communication protocol transmitted by the data pin.
Certainly, in specific implementation, if the priority of PD charging is lower than the priority of standard charging, the electrical signal on the data pin (D +/D in fig. 1) may be detected first, and when it is determined that the device to be charged connected to the PD is the standard device to be charged, the standard device to be charged is standard charged based on the communication signal of the preset communication protocol transmitted by the data pin; when the device to be charged connected with the device to be charged is determined to be non-standard device to be charged, detecting an electric signal on a CC pin in the second Type-A interface 21, controlling the CC wiring to be communicated when the device to be charged connected with the device to be charged is determined to support PD charging, and carrying out PD charging on the standard device to be charged supporting PD charging; when the device to be charged connected with the CC is determined not to support PD charging, the CC wiring is controlled to be disconnected, and non-PD charging (for example, D +/D-charging of a general protocol) is carried out on the non-standard device to be charged based on a communication signal of the general communication protocol transmitted by the data pin.
It should be noted that, in a specific implementation, when the charging device provided in the present application is connected to a power supply and is not connected to a device to be charged, electrical signal values on a CC pin and a data pin (D +/D in fig. 1) in the second Type-a interface 21 are different from an electrical signal value when the charging device is connected to the device to be charged, so that when the charging device is not connected to the device to be charged, the CC wiring is controlled to be disconnected, and the charging device does not transmit a power supply. And when the charging equipment is connected with the equipment to be charged, transmitting the power supply according to the charging parameters negotiated by the charging communication.
The data line 2 provided in the embodiment of the application can determine whether a charger connected to the data line supports PD charging and whether a preset communication protocol of standard charging is supported according to electrical signals on a CC pin and a data pin (D +/D-) in the second Type-a interface 21, and determine whether a device to be charged connected to the data line supports standard charging that supports standard non-PD charging and whether PD charging is supported, and accordingly control the CC wiring to be connected or disconnected, so that when the CC wiring is connected, the device to be charged is subjected to PD charging; when the CC wiring is disconnected, the device to be charged is charged in a non-PD mode, and therefore the data line with the second Type-A interface can support PD charging and non-PD charging.
As an alternative embodiment, 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, wherein a first end of the first resistor 231 is connected to a VBUS pin in the second Type-a interface 21, a first end of the first switch 242 is connected to a second end of the first resistor 231, a second end of the first switch 242 is connected to a CC pin in the Type-C interface 22, an output end of the control unit 241 is connected to a control end of the first switch 242, and an input end of the control unit 241 is connected to the CC pin and the data pin in the second Type-a interface 21, respectively;
when the CC wires are connected, the control unit 241 controls the first switch 242 to be turned off; in case the CC-trace is open, the control unit 241 controls the first switch 242 to be closed.
The resistance value of the first resistor 231 may be 56K Ω (kilo-ohm).
In addition, the control Unit 241 may be a Micro Controller Unit (MCU), a first detection terminal of the MCU is connected to the CC pin of the second Type-a interface 21, and a second detection terminal of the MCU is connected to the data pin (a D-pin in fig. 4 or a D + pin in fig. 5).
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 a device to be charged supporting the PD communication protocol, the PD communication function of the device to be charged supporting the PD communication protocol can be triggered.
It should be noted that the switching module 24 may further include another switching unit besides the first switch 242, and a control end of the switching unit is connected to the MCU, so that the switching unit can switch the connection state between the CC pin in the second Type-a interface 21 and the CC pin in the Type-C interface 22 under the control of the MCU.
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 further connected to the control end of the second switch 243 and the control end of the third switch 244, the first end of the second switch 243 is connected to the CC pin in the second Type-a interface 21, the second end of the second switch 243 is connected to the first end of the second resistor 245, the second end of the second resistor 245 is connected to the GND pin in the second Type-a interface 21, the first end of the third switch 244 is connected to the CC pin in the second Type-a interface 21, and the second end of the third switch 244 is connected to the CC pin in the Type-C interface 22.
In operation, the control unit 241 controls the third switch 244 to be closed and controls the first switch 242 and the second switch 243 to be opened based on the electrical signals transmitted on the CC pin and the data pin in the second Type-a interface 21, or the control unit 241 controls the third switch 244 to be opened and controls the first switch 242 and the second switch 243 to be closed 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 243, and the third switch 244 may be transistors as shown in fig. 5.
Of course, the first switch 242, the second switch 243 and the third switch 244 may be other transistors such as MOS transistors, which is not exhaustive here.
In the present 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 control unit 241 as shown, so that the structure and the control logic of the switching module 24 can be simplified.
As an alternative embodiment, the data pins include a D + pin and a D-pin, and the input terminal of the control unit 241 is connected to at least one of the D + pin and the D-pin.
In specific implementation, both the D + pin and the D-pin of the charger 1 are connected to the protocol control module 12, so as to perform a charging mode based on a D +/D-communication protocol on the device to be charged according to the charging signals transmitted on the D + pin and the D-pin. And at least one of the D + pin and the D-pin is connected to an input of the control unit 241, such as: the D-pin is connected to an input of the control unit 241 as shown in fig. 4, or the D + pin is connected to an input of the control unit 241 as shown in fig. 5.
Of course, in a specific implementation, both the D + pin and the D-pin may be connected to an input 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, the D + pin in the first Type-A interface 11, the D + pin in the second Type-A interface 21 and the D + pin in the Type-C interface 22 are communicated, and the D-pin in the first Type-A interface 11, the D-pin in the second Type-A interface 21 and the D-pin in the Type-C interface 22 are communicated.
In this embodiment, the charging device can transmit a DP/DM signal through the D + pin and the D-pin to charge the non-PD of the device to be charged according to the DP/DM signal, and the control unit 241 can detect the electrical signals on the D + pin and the D-pin to determine 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 this embodiment of the present application is connected to a device to be charged, if the device to be charged is a first device to be charged, the CC routing lines are communicated; if the equipment to be charged is second equipment to be charged, the CC routing is disconnected;
when the switching module 24 determines that the device to be charged is not matched with the charging device and supports PD charging based on the electrical signals transmitted on the CC pin and the data pin in the second Type-a interface 21, the device to be charged is the first device to be charged; the switching module 24 determines that the device to be charged is the second device to be charged when the device to be charged is matched with the charging device or the device to be charged does not support PD charging based on the electrical signal transmitted through the CC pin and the data pin in the second Type-a interface 21.
Wherein, the matching of the device to be charged and the charging device can be understood as: and the equipment to be charged and the charging equipment are both provided with a preset communication protocol, and communication signals of the preset communication protocol are transmitted through a data pin.
In addition, under the condition that the equipment to be charged connected with the charging equipment is non-standard equipment to be charged and does not support PD charging, the charging handshake is realized by adopting a general DP/DM communication protocol transmitted through a data pin.
In the embodiment, the standard equipment to be charged is subjected to charging handshake according to a preset communication protocol transmitted by a data pin; for the non-standard equipment to be charged which supports PD charging, carrying out charging handshake according to a PD communication protocol transmitted by a CC pin; for the non-standard equipment to be charged which does not support PD charging, the charging handshake is carried out according to the general communication protocol transmitted by the data pin, so that the charging equipment provided by the embodiment of the application can be suitable for charging various equipment to be charged.
As an optional implementation manner, when the charging device is connected to the first device to be charged, the switching module 24 further transmits a control signal through a CC pin in the second Type-a interface 21, where the control signal is used to control the charger 1 to stop outputting an electrical signal through a VBUS pin within a preset time length, and when the charger 1 outputs an electrical signal through the VBUS pin, control the CC wiring to be communicated;
before the charging device is connected to the device to be charged, the switching module 24 further controls the CC routing to be disconnected.
In a specific implementation, the preset time length is greater than or equal to a power supply interruption time specified by a 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 the preset time duration, and power is restored after the preset time duration, so that when the device to be charged is charged through the PD communication protocol, the interruption time of the electrical signal according to the specification of the PD communication protocol is met, and the problem that the structure of the charger 1 is complicated due to the fact that the control module is arranged in the charger 1 to control the charger 1 to interrupt the electrical signal transmitted on the VBUS pin within the preset time duration is avoided.
Next, taking the data line 2 shown in fig. 4 or fig. 5 as an example, the following description is made on the operation principle that the switching module 24 of the data line 2 connects or disconnects the CC traces based on the CC pins in the second Type-a interface 21 and the electrical signals on the data pins:
in the charger 1 shown in fig. 4 or fig. 5, a voltage of 5V (volt) is output by default when the charger is connected to a power supply, the target power supply 121 supplies a constant current of 550mA (milliamp), the resistance value of the first resistor 231 is 56K Ω (kilo ohm), and the resistance value of the second resistor 245 is 5.1K Ω.
In addition, the standard charging device 3 to be charged, which is connected to the charging device provided in the present application in a matching manner, connects the data pin in the Type-C interface 22 to the voltage source 32 through the third resistor 31, where the resistance value of the third resistor 31 is 10K Ω, 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 a device to be charged that supports PD charging, the CC pin in the Type-C interface 22 is further connected to the ground terminal through a fourth resistor 33, and a resistance value of the fourth resistor 33 is 5.1K Ω.
Situation one
If a 3.3V voltage is detected on the data pin (D + pin or D-pin), it is determined that the charging device provided in the embodiment of the present application is connected to a standard device to be charged, and the charging handshake has been completed through the DP/DM communication signal transmitted on the D + pin and the D-pin, and at this time, the switching module 24 may control the CC trace to be disconnected.
Situation two
If the voltage of 1.68V is detected on the CC pin in the second Type-a interface 21, the switching module 24 determines that both the charger (specifically, the charger 1 shown in fig. 4 or fig. 5) connected to the data line 2 and the device to be charged support PD charging, so that the switching module 24 can connect the CC trace when the device to be charged does not complete the charging handshake through the DP/DM communication signal.
Situation three
If a voltage of 1.98V 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 (specifically, the charger 1 shown in fig. 4 or fig. 5) supporting PD charging and matching with the data line 2, and is not connected to the device to be charged, and at this time, the switching module 24 may disconnect the CC wiring.
Situation four
If a voltage of 0.4V 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 is not matched with the data line 2, and at this time, the switching module 24 may disconnect the CC wiring.
In addition, at the same time of disconnecting the CC trace, the second switch 243 as shown in fig. 4 may also be 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, and the like may not be consistent with the parameters, and it is only necessary to distinguish whether the charger and the device to be charged support PD charging according to the electrical signal value detected on the CC pin and the electrical signal value detected on the data pin in the second Type-a interface 21, and whether the device to be charged is a standard device to be charged, which is not specifically limited herein.
In addition, as shown in fig. 6, when the data pins are a D + pin and a D-pin, a GND pin, a D + pin, a D-pin, and a VBUS pin are disposed on a first side of the first Type-a interface 11, a CC pin is disposed on a second side of the first Type-a interface 11, and the first side and the second side of the first Type-a interface 11 are opposite.
Accordingly, as shown in fig. 7, a 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, a fourth side of the second Type-a interface 21 is provided with a CC pin, and the third side and the fourth side of the second Type-a interface 21 are opposite sides. And when first Type-A interface 11 is connected with second Type-A interface 21, the GND pin in first Type-A interface 11 and the second Type-A interface 21 is connected correspondingly, the D + pin is connected correspondingly, the D-pin is connected correspondingly, the VBUS pin is connected correspondingly, and the CC pin is connected with the CC pin.
In this way, the distribution positions of the GND pin, the D + pin, the D-pin and the VBUS pin are the same as the distribution positions of the GND pin, the D + pin, the D-pin and the VBUS pin in the Type-a interface in the prior art, so that the GND pin, the D + pin, the D-pin and the VBUS pin can be matched and connected with the conventional Type-a interface, the conventional functions of the GND pin, the D + pin, the D-pin and the VBUS pin can be realized, the charger 1 provided by the embodiment of the application can be connected with the data line with the conventional Type-a interface, and the data line 2 provided by the embodiment of the application can be connected with the charger with the conventional Type-a interface.
It should be noted that, the distribution positions of the pins in the first Type-a interface 11 may also be exchanged or changed, which is not specifically limited herein, and in addition, in the non-PD charging process, the structures and the operating principles of the VBUS pin, the GND pin, the D + pin, and the D-pin in the first Type-a interface 11 are the same as those of the VBUS pin, the GND pin, the D + pin, and the D-pin in the first Type-a interface 11 in the prior art, and are not specifically set forth herein.
Referring to fig. 8, taking the charging device shown in fig. 4 or fig. 5 as an example, an operation schematic diagram of the charging device provided in the embodiment of the present application is illustrated, where the charging device may specifically perform the following processes:
step 801, when the charger is connected with a power supply, the protocol control module controls the charger to be in a preset working state.
Wherein, under the above-mentioned predetermined operating condition, VBUS pin output 5V voltage.
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 to be turned off.
Step 803, judging whether the charging device is connected to a first preset device to be charged.
The first device to be charged may be a device such as a mobile phone that does not support PD charging.
Further, step 804 is executed when the determination result of step 803 is yes, and step 805 is executed when the determination result of step 803 is no.
Step 804, judging whether the first preset device to be charged is a standard device to be charged.
However, step 806 is executed when the determination result of step 804 is yes, and step 807 is executed when the determination result of step 804 is no.
And 806, carrying out charging communication with the device to be charged through the D + pin and the D-pin by the charger.
The charger performs charging communication with the device to be charged through the D + pin and the D-pin, which can also be understood as follows: the charger carries out DP/DM charging communication of a private protocol (also called as a preset communication protocol) on the standard device to be charged.
Step 805, determining whether the charging device is connected to a second preset device to be charged.
In an implementation, the second preset device to be charged may be a notebook computer or the like supporting PD charging, and is not limited in particular herein.
If the determination result in step 805 is yes, step 807 is executed, and if the determination result in step 805 is no, step 802 is repeatedly executed.
In step 807, the MCU requests the charger to turn off the VBUS pin for a preset time period via the CC pin.
The preset time length is greater than or equal to the power interruption time specified by the PD communication protocol. And during the disconnection of the VBUS pin, the charger does not transfer power to the outside.
808. When the VBUS pin is powered back, the MCU controls the first switch 242 and the second switch 243 to be turned off, and the third switch 244 to be turned on.
The charging equipment provided by the embodiment of the application can determine whether the equipment to be charged is standard charging equipment or not according to the electric signals detected on the CC pin and the data pin in the second Type-A interface 21 and support PD charging or not, so that the CC pin is connected or disconnected according to the requirement of the equipment to be charged, switching between a PD charging mode and a non-PD charging mode between the equipment to be charged is realized, and the charging equipment can be suitable for different charging modes of various equipment to be charged.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and electronic devices in the embodiments of the present application is not limited by the order of execution of the functions illustrated or discussed, but may include execution of the functions in a substantially simultaneous manner or in a reverse order based on the functions noted, e.g., the methods described may be executed out of order from that depicted, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A data line, comprising: the device comprises 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, wherein a switching module is arranged on the cable;
the second Type-A interface and the first Type-C interface respectively comprise a CC pin, a data pin, a VBUS pin and a GND pin, the data pin, the VBUS pin and the GND pin in the second Type-A interface and the first Type-C interface are connected in a one-to-one correspondence mode, the cable comprises a CC wiring, and two ends of the CC wiring are respectively connected with the CC pin in the second Type-A interface and the CC pin in the first Type-C interface;
the switching module controls the CC routing to be connected or disconnected based on an electric signal transmitted on a CC pin and an electric signal transmitted on a data pin in the second Type-A interface;
still be provided with first resistance on the cable, the switching module includes: a control unit and a first switch, wherein a first end of the first resistor is connected to a VBUS pin in the second Type-a interface, a first end of the first switch is connected to a second end of the first resistor, a second end of the first switch is connected to a CC pin in the first Type-C interface, an output end of the control unit is connected to a control end of the first switch, and an input end of the control unit is connected to the CC pin and the data pin in the second Type-a interface, respectively;
wherein, under the condition that the CC routing is connected, the control unit controls the first switch to be disconnected; under the condition that the CC routing is disconnected, the control unit controls the first switch to be closed;
the switching module further comprises: the second switch, the third switch and the second resistor;
the control unit is respectively connected with a control end of the second switch and a control end of the third switch, a first end of the second switch is connected with a CC pin in the second Type-A interface, a second end of the second switch is connected with a first end of the second resistor, a second end of the second resistor is connected with a GND pin in the second Type-A interface, a first end of the third switch is connected with a CC pin in the second Type-A interface, and a second end of the third switch is connected with a CC pin in the first Type-C interface;
the control unit controls the third switch to be closed and controls the first switch and the second switch to be disconnected based on a CC pin in the second Type-A interface and an electric signal transmitted on the data pin, or controls the third switch to be disconnected and controls the first switch and the second switch to be closed based on the CC pin in the second Type-A interface and the electric signal transmitted on the data pin.
2. The data line of claim 1, wherein the data pin comprises a D + pin and a D-pin, and wherein the input of the control unit is connected to at least one of the D + pin and the D-pin.
3. A charging apparatus comprising a charger and a data line connected to the charger, wherein the charger comprises: the device 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 are connected with a first end of the protocol control module, and the data pin is connected with a second end of the protocol control module;
under the condition that the charger is connected with the equipment to be charged through a data line, if the protocol control module acquires the communication signal transmitted by the CC pin, the charger carries out PD charging on the equipment to be charged; if the protocol control module acquires the communication signal transmitted by the data pin, the charger is used for performing non-PD charging on the equipment to be charged, the data line is the data line according to claim 1 or 2, and the CC pin, the data pin, the VBUS pin and the GND pin in the first Type-A interface and the second Type-A interface are connected in a one-to-one correspondence manner;
under the condition that the charger is connected with the data line, the switching module in the data line controls the CC wiring to be connected or disconnected based on the CC pin in the second Type-A interface and the electric signals transmitted on the data pin;
when the charging equipment is connected with equipment to be charged, if the CC wiring is communicated, the charging equipment carries out PD charging on the equipment to be charged; and if the CC wiring is disconnected, the charging equipment carries out non-PD charging on the equipment to be charged.
4. The charging device according to claim 3, wherein when the charging device is connected to a device to be charged, if the device to be charged is a first device to be charged, the CC traces are communicated; if the equipment to be charged is second equipment to be charged, the CC routing is disconnected;
when the switching module determines that the device to be charged is not matched with the charging device and supports PD charging based on the CC pin in the second Type-A interface and the electric signal transmitted on the data pin, the device to be charged is the first device to be charged; and the switching module determines that the equipment to be charged is matched with the charging equipment or the equipment to be charged does not support PD charging based on the CC pin in the second Type-A interface and the electric signal transmitted on the data pin, and the equipment to be charged is the second equipment to be charged.
5. The charging device according to claim 4, 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, where the control signal is used to control the charger to stop outputting an electrical signal through a VBUS pin within a preset time period, and when the charger outputs an electrical signal through the VBUS pin, the CC trace is controlled to be connected;
before the charging device is connected with the device to be charged, the switching module further controls the CC routing to be disconnected.
6. An electronic device, wherein the electronic device is a device to be charged matched with the charging device according to any one of claims 3 to 5, the electronic device comprises a second Type-C interface, a third resistor and a power supply unit, the second Type-C interface comprises a CC pin, a data pin, a VBUS pin and a GND pin, the CC pin, the data pin, the VBUS pin and the GND pin in the second Type-C interface and the first Type-C interface are connected in a one-to-one correspondence manner, and the data pin in the second Type-C interface is further connected to the power supply unit through the third resistor.
7. The electronic device of claim 6, wherein the charging device comprises a fourth resistor, and wherein the CC pin in the second Type-C interface is further connected to the GND pin in the second Type-C interface through the fourth resistor.
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