CN111817384A - Data cables and charging equipment - Google Patents

Abstract

The application discloses data line and battery charging outfit belongs to communication technology field. Wherein, the data line includes: the device comprises a first Type-A interface, a Type-C interface, a single bus controller and a switch module; the first Type-A interface and the Type-C interface both comprise CC pins, and the CC pins in the first Type-A interface and the Type-C interface are communicated through CC wiring; the switch module is respectively connected with the CC wiring and the single bus controller; when the single bus controller determines that the data line is connected with the matched first charger based on the identification information transmitted on the CC pin, the switch module is communicated with the CC wiring under the control of the single bus controller. According to the embodiment of the application, the data line with the Type-A interface is connected with the matched charger through the CC wiring, so that the PD charging function is supported.

Description

Data cables and charging equipment

technical field

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

Background technique

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

In the related art, the Power Delivery (PD) protocol is usually used for fast charging, and the charger supporting the PD protocol charging needs to use the CC signal line for communication, and the charger supporting the PD protocol charging usually adopts the third standard ( Type-C) interface with a Type-C to Type-C data cable. For the charger using the first standard (Type-A or Standard-A) interface, it communicates through the D+/D- signal line and cannot support PD protocol charging, so that the data line with the Type-A interface does not support PD Charge.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a data cable and a charging device, which can solve the problem that a data cable with a Type-A interface does not support PD charging.

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 data cable, including: a first Type-A interface, a Type-C interface, a single-bus controller, and a switch module;

The first Type-A interface and the Type-C interface both include D+ pins, D- pins, VBUS pins and GND pins, and the first Type-A interface and the Type-C interface The D+ pins, D- pins, VBUS pins and GND pins are connected in one-to-one correspondence, the first Type-A interface also includes a first CC pin, and the Type-C interface also includes a second CC pin pin;

the switch module is connected to the first CC pin, the single bus controller and the second CC pin;

When the data cable is connected to the charger, if the charger is the first charger, the switch module connects the first CC pin and the second charger under the control of the single-bus controller. CC pin, and disconnect the first CC pin from the single-bus controller; if the charger is the second charger, the switch module is connected to the single-bus controller under the control of the The first CC pin and the single bus controller are disconnected, and the first CC pin and the second CC pin are disconnected;

Wherein, when the single-bus controller is connected to the first CC pin, the single-bus controller determines the charger and the data line based on the identification information transmitted through the first CC pin When matching, the charger is the first charger; based on the identification information transmitted by the first CC pin, the single-bus controller determines that the charger does not match the data line, the The charger is the second charger.

In a second aspect, an embodiment of the present application provides a charging device, including: a charger and a data cable connected to the charger, where the data cable is the data cable of the first aspect, and the charger includes a second Type-A interface, control unit, switching unit, PD charging processing unit and non-PD charging processing unit, and the second Type-A interface includes a fourth CC pin, D+ pin, D- pin, and VBUS pin and GND pin, the fourth CC pin is connected with the first CC pin, and the D+ pin, D in the second Type-A interface and the first Type-A interface of the data line -The pins, VBUS pins and GND pins are connected one by one;

The switching unit is connected to the control unit, the PD charging processing unit and the fourth CC pin, and the D+ pin and the D- pin in the second Type-A interface are connected to the non-PD charging processing unit connection;

When the control unit determines that the charger matches the data line based on the identification information transmitted by the fourth CC pin, the single bus controller controls the switch module to connect the first CC pin and the second CC pin, and disconnect the first CC pin and the single-bus controller, and the control unit also controls the switching unit to disconnect the control unit and the fourth CC pin, and connect the fourth CC pin with the PD charging processing unit, so that the PD charging processing unit performs PD charging on the device to be charged based on the CC signal transmitted through the fourth CC pin, or makes The non-PD charging processing unit performs non-PD charging on the device to be charged based on the communication signal transmitted through the D+ pin and the D- pin.

The data cable provided by the embodiment of the present application includes a first Type-A interface, a single-bus controller, and a switch module, wherein the single-bus controller can determine the charging connected to the data cable according to the identification information transmitted on the first CC pin whether the chargers are the first chargers that match each other, and when it is determined that the data line is connected to the first charger, the switch module is controlled to connect the first CC pin with the second CC pin, that is, to connect the The CC line in the data line can transmit the PD charging signal through the CC line, so as to realize the PD charging function.

Description of drawings

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

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

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

FIG. 7 is one of the working flowcharts of the charging device provided by the embodiment of the present application;

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

Detailed ways

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

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.

The data cable 2 provided in the embodiment of the present application and the charger 1 are connected through a Type-A interface, so as to constitute the charging device provided in the embodiment of the present application. In addition, the CC pin is added to the above Type-A interface, so that the data line 2 and the charger 1 are handshaked and matched by the CC signal.

In this embodiment, in the data cables shown in FIGS. 3 and 4 , the Type-C interface 22 and the first Type-A interface 21 are connected by a cable 23 , and the Type-C interface 22 and the first Type-A interface 22 are connected to each other through a cable 23 . The connection relationship between each pin in the interface 21 and each line in the cable is specifically the connection relationship shown in Table 1 below:

Table 1

The data line 2 provided in the embodiment of the present application can connect the CC traces in the data line, that is, the first CC pin, the second CC pin, and the fourth CC pin, when it is connected to the matching charger 1 and the matching is successful. Connected, so as to support the PD charging (or called: PD protocol charging) function based on the PD communication signal transmitted by the CC line.

In a specific implementation, if the charging device provided by the embodiment of the present application is connected to a device to be charged that supports PD charging, the PD charging processing unit 13 is connected to the charging module of the device to be charged via the CC wiring, and the non-PD charging processing unit 14 It can also be connected to the charging module of the device to be charged via the D+ wiring and the D- wiring.

At this time, the non-PD charging processing unit 14 can perform non-PD charging on the device to be charged based on the communication signals transmitted through the D+ wiring and the D- wiring, and the PD charging processing unit 13 can communicate via the CC wiring. The signal performs PD charging on the device to be charged, and the specific charging method can be determined according to the negotiation of the charging protocol with the device to be charged, or determined according to a preset priority.

In addition, if the charging device provided in the embodiment of the present application is connected to a device to be charged that does not support PD charging, the PD charging processing unit 13 is disconnected from the charging module of the device to be charged, and the non-PD charging processing unit 14 can also be charged via D+ The wiring and the D- wiring are in communication with the charging module of the device to be charged, so that the device to be charged is non-PD charging via the communication signal that enables the non-PD charging processing unit 14 to transmit through the D+ wiring and the D- wiring.

In addition, when the data line 2 provided in the embodiment of the present application is connected to an unmatched charger, the CC wiring in the data line can be disconnected, so that PD charging communication is not supported. At this time, the non-PD charging processing unit 14 is made based on the The communication signal transmitted through the D+ pin and the D- pin performs non-PD charging (or called as: D+/D- protocol charging) for the device to be charged.

The charging device provided by the embodiment of the present application includes the data cable 2 provided by the embodiment of the present application, and the charger 1 matched with the data cable 2 .

It should be noted that the charging device provided in the embodiment of the present application supports the PD charging function and the non-PD charging function. Specifically, it may be determined whether to connect the CC wiring or disconnect the CC wiring according to the configuration of the device to be charged.

Specifically, as shown in FIGS. 1 and 2 , the charger 1 provided in the embodiment of the present application includes: a second Type-A interface 11 , a control unit 12 , a switching unit, a PD charging processing unit 13 and a non-PD charging processing unit 14, and the second Type-A interface 11 includes a fourth CC pin, a D+ pin, a D- pin, a VBUS pin and a GND pin, the fourth CC pin is connected to the first CC pin , and the D+ pin, D- pin, VBUS pin and GND pin in the second Type-A interface 11 and the first Type-A interface 21 of the data line 2 are connected in one-to-one correspondence;

The switching unit is connected to the control unit 12, the PD charging processing unit 13 and the fourth CC pin, and the D+ pin and the D- pin in the second Type-A interface 11 are connected to the non-PD charging processing unit 14;

When the control unit 12 determines that the charger 1 is matched with the data line 2 based on the identification information transmitted by the fourth CC pin, the single bus controller (also referred to as: one wire control IC) 24 controls the switch module to connect the A CC pin and a CC1 pin (ie, the CC wiring in the data line 2 is connected), and the first CC pin and the single-bus controller 24 are disconnected, and the control unit 12 also controls the switching unit to disconnect the control unit 12 and the fourth CC pin, and connect the fourth CC pin with the PD charging processing unit 13 .

When the charger 1 is connected to the data line 2 shown in FIG. 3 as shown in FIG. 2 , and the Type-C of the data line 2 is connected to the device to be charged through the interface 22 , since the data line 2 in the charging device is connected to the charger 1 match each other to connect the CC traces. At this time, the PD charging processing unit 13 in the charger 1 sends the PD charging negotiation signal to the device to be charged via the CC line, which can be divided into the following two cases:

Case 1

When the device to be charged supports the PD charging function, the device to be charged will feed back the PD charging negotiation signal to the PD charging processing unit 13 via the CC line. At this time, the control unit 12 in the charger 1 can receive the PD charging processing unit 13 Feedback the PD charging negotiation signal to control the single-bus controller 24 to keep the CC wiring connected, and the control unit 12 in the charger 1 can also keep the PD charging processing unit 13 and the CC wiring connected based on the feedback PD charging negotiation signal, and Perform PD charging.

Wherein, the above-mentioned control unit 12 may be a Microcontroller Unit (Microcontroller Unit, MCU) or the like, which is not specifically limited herein. And the above-mentioned charger 1 also includes a switching unit, which can connect the CC pin in the charger 1 with the control unit 12, or communicate with the PD charging processing unit 13, or, the control unit 12 and the PD charging processing unit. 13 are disconnected.

Specifically, as shown in FIG. 2 , the switching unit is a switching switch SW1 .

Case 2

When the device to be charged does not support the PD charging function, the device to be charged will not feed back a PD charging negotiation signal to the PD charging processing unit 13 via the CC line. At this time, the control unit 12 in the charger 1 can be based on the PD charging processing unit. 13 does not receive the feedback PD charging negotiation signal and controls the single-bus controller 24 to disconnect the CC line, and the control unit 12 in the charger 1 can also control PD charging based on the feedback PD charging negotiation signal obtained without the CC line The processing unit 13 is disconnected from the CC trace and performs non-PD charging.

The above-mentioned non-PD charging processing unit 14 can be understood as a charging unit that negotiates charging with the device to be charged via the communication signal transmitted on the D+ pin and the D- pin. The PD charging processing unit 14 may also be referred to as a D+/D- charging processing unit, and the non-PD charging processing unit 14 supports the communication protocol of the communication signal transmitted through the D+ pin and the D- pin.

In application, 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, the charging device can perform non-PD charging with the device to be charged that does not support PD charging via the D+ pin and the D- pin. Charging negotiation communication, wherein the process of non-PD charging negotiation and communication between the charging device and the device to be charged that does not support PD charging via the D+ pin and the D- pin is the same as the D+/D- charging method in the prior art, It is not repeated here.

In one embodiment, the matching process between the data line 2 and the charger 1 may be as follows: when the data line 2 is connected to a power source, the single-bus controller 24 is powered on to initialize the identification information for use in the charger 1 The control unit 12 obtains identification information from the single-bus controller 24 through the CC pin. If the identification information obtained by the control unit 12 through the CC pin matches the identification information pre-stored in the control unit 12, the control unit 12 sends the single-bus control to the control unit 12. The controller 24 sends a control signal, so that the single-bus controller 24 determines that the charger 1 is the first charger when receiving the control signal.

The identification information may be a character string, and the successful matching may be that the obtained character string is the same as the character string preconfigured by the single-bus controller 24 or has a one-to-one correspondence.

Wherein, only one signal line (ie, CC line) needs to be connected between the single-bus controller 24 and the control unit 12, so that the control process and the data exchange process can be realized.

In this embodiment, the control unit 12 can obtain the identification information pre-stored in the single-bus controller 24, and the control unit 12 can perform matching to obtain a matching result, which can simplify the control logic of the single-bus controller 24 and simplify the single-bus controller 24. Data exchange process between the bus controller 24 and the control unit 12 .

Of course, in the specific implementation, the single-bus controller 24 in the data line 2 can also obtain the identification information pre-stored in the control unit 12 in the charger 1 through the CC pin, and associate the acquired identification information with the single-bus control The pre-configured identification information of the controller 24 is matched, and when the matching is successful, it is determined that the data line 2 is connected to the matching charger 1, and the control signal of the successful matching is fed back to the control unit 12, so that the control unit 12 controls the switching unit to charge the PD. The processing unit 13 is connected to the CC wiring, which is not specifically limited here.

In this embodiment, the single-bus controller 24 can obtain identification information from the control unit 12 via the CC line, and the single-bus controller 24 can perform matching to obtain a matching result.

1 and 3, the data line 2 includes: a first Type-A interface 21, a Type-C interface 22, a single bus controller 24 and a switch module (including switches: SW2, SW3, SW4 and SW5);

The first Type-A interface 21 and the Type-C interface 22 both include D+ pins, D- pins, VBUS pins and GND pins, and the D+ pins in the first Type-A interface 21 and the Type-C interface 22 The pins, D-pins, VBUS pins and GND pins are connected in one-to-one correspondence. The first Type-A interface 21 also includes a first CC pin, and the Type-C interface 22 also includes a second CC pin (as shown in FIG. 1 ). and the CC1 pin shown in Figure 3);

The switch module is connected with the first CC pin, the single bus controller 24 and the CC1 pin in the Type-C interface 22;

When the data line 2 is connected to the charger 1, if the charger 1 is the first charger, the switch module connects the first CC pin and the CC1 pin under the control of the single bus controller 24, and disconnects the first CC pin and the CC1 pin. A CC pin and the single bus controller 24; if the charger 1 is the second charger, the switch module connects the first CC pin and the single bus controller 24 under the control of the single bus controller 24, and disconnects the Open the first CC pin and the CC1 pin;

Wherein, when the single-bus controller 24 is connected to the first CC pin, the single-bus controller 24 determines, based on the identification information transmitted through the first CC pin, that when the charger 1 matches the data line 2, charging The device 1 is the first charger; the single-bus controller 24 determines that the charger 1 does not match the data line 2 based on the identification information transmitted through the first CC pin, and the charger 1 is the second charger. device.

The data cable provided by the embodiment of the present application includes a first Type-A interface, a single-bus controller, and a switch module, wherein the single-bus controller can determine the charging connected to the data cable according to the identification information transmitted on the first CC pin whether the chargers are the first chargers that match each other, and when it is determined that the data line is connected to the first charger, the switch module is controlled to connect the first CC pin with the second CC pin, that is, to connect the The CC line in the data line can transmit the PD charging signal through the CC line, so as to realize the PD charging function.

As an optional implementation manner, as shown in FIG. 3 , the Type-C interface 22 further includes a third CC pin (the CC2 pin shown in FIG. 1 and FIG. 3 ), and the data line 2 is also provided with a third CC pin. A resistance Rp;

When the data line 2 is connected to the second charger, the switch module is also used to connect the CC2 pin to the VBUS pin through the first resistor Rp under the control of the single bus controller 24).

Specifically, the above-mentioned first resistance Rp may be a resistance of 56KΩ (kiloohm).

In this embodiment, when the CC2 pin is connected to the VBUS pin through the first resistor Rp, an electrical signal can be transmitted to the device to be charged through the CC2 pin, so that the device to be charged triggers non-PD charging based on the electrical signal Function, that is, non-PD charging negotiation communication with the charger through the D+ pin and D- pin.

as an optional implementation. As shown in FIG. 3 , the switch module includes a first switch SW2, a second switch SW4, a third switch SW3, a fourth switch SW5, a second resistor R1, a third resistor R2, a fourth resistor R3 and a fifth resistor R4;

The first end of the second resistor R1, the first end of the third resistor R2, the first end of the fourth resistor R3, and the first end of the fifth resistor R4 are all connected to the VBUS pin in the data line 2, and the second The second end of the resistor R1 is connected to the first end of the single bus controller 24, the second end of the third resistor R2 is connected to the second end of the single bus controller 24, and the second end of the fourth resistor R3 is connected to the single bus controller 24. The third end of the resistor 24 is connected, and the second end of the fifth resistor R4 is connected to the first end of the first switch SW2;

The second terminal of the single bus controller 24 (the terminal A shown in FIG. 1 ) is connected to the control terminal of the first switch SW2, the second terminal of the first switch SW2 is connected to the ground terminal, and the first terminal of the first switch SW2 is connected to the ground terminal. (C terminal as shown in FIG. 1) is also connected to the control terminal of the third switch SW3 and the control terminal of the fourth switch SW5, the first terminal of the third switch SW3 is connected to the VBUS pin in the data line 2, and the third switch SW3 is connected to the VBUS pin of the data line 2. The second end of the switch SW3 is connected to the second end of the first resistor Rp, the first end of the fourth switch SW5 is connected to the first CC pin, and the second end of the fourth switch SW5 is connected to the CC1 pin;

The third end of the single bus controller 24 (the B end shown in FIG. 1 ) is connected to the control end of the second switch SW4, the first end of the second switch SW4 is connected to the first CC pin, and the second switch SW4 is connected to the first CC pin. The second end of SW4 is connected with the first end of the single bus controller 24;

The single bus controller 24 is used to control the switching state of the first switch SW2 through the second terminal of the single bus controller 24, and after controlling the switching state of the first switch SW2, the single bus controller 24 passes through the third terminal of the single bus controller 24. Control the switch state of the second switch SW4;

When the first switch SW2 is turned off, the third switch SW3 is turned on, and the fourth switch SW5 is turned off;

When the first switch SW2 is closed, the third switch SW3 is opened, and the fourth switch SW5 is closed.

In a specific implementation, the first switch SW2, the second switch SW4, the third switch SW3 and the fourth switch SW5 may be analog signal control switches (eg, triodes, transistors, etc.). The first switch SW2 and the second switch SW4 send corresponding analog signals to control the switching states of the first switch SW2 and the second switch SW4.

In addition, when the first switch SW2 is closed, the control terminal of the third switch SW3 is grounded via the first switch SW2, so that the third switch SW3 can be controlled to be turned off.

In addition, when the first switch SW2 is closed, the control terminal of the fourth switch SW5 is grounded via the first switch SW2, so that the fourth switch SW5 can be controlled to be turned off.

Correspondingly, when the first switch SW2 is turned off, the control terminal of the third switch SW3 is pulled up to the VBUS pin through the fifth resistor R4, so that a voltage can be supplied to the control terminal of the third switch SW3 through the VBUS pin to The third switch SW3 is controlled to be connected.

In addition, when the first switch SW2 is closed, the control terminal of the fourth switch SW5 is pulled up to the VBUS pin through the fifth resistor R4, so that a voltage can be supplied to the control terminal of the fourth switch SW5 through the VBUS pin to control the first switch SW5. The four switches SW5 are connected.

In this embodiment, the switch module is set as an analog circuit to simplify the control logic of the single-bus controller 24 .

In addition, after adjusting the switch state of the first switch SW2, and then adjusting the switch state of the second switch SW4, it can ensure that the single-bus controller 24 is connected to the CC line according to whether there is a CC signal transmission on the CC line. , so as to control the switching state of the first switch SW2 accordingly.

As an optional implementation manner, the control unit 12 pre-stores second identification information, and the control unit 12 when the first identification information obtained through the fourth CC pin matches the second identification information , send the first control command to the single bus controller 24 through the fourth CC pin, and send the first control command to the single bus controller 24 through the fourth CC pin after the first preset time of sending the first control command a second control instruction, and controls the switching unit to disconnect the control unit 12 and the fourth CC pin, and connect the fourth CC pin and the PD charging processing unit 13;

The single bus controller 24 controls the switch module to connect the first CC pin and the CC1 pin in response to the first control command, and the single bus controller 24 responds to the second control command , controlling the switch module to disconnect the first CC pin from the single bus controller 24 .

In this embodiment, the control unit 12 in the charger 1 can send the first control command to the single-bus controller 24 first, and then send the second control command, so as to adjust the switching state of the first switch SW2 and then adjust the The switch state of the second switch SW4 can avoid setting a timer in the single-bus controller 24 , simplifying the structure of the data line 2 , and avoiding arranging a complex and bulky control module on the data line 2 .

Optionally, the first switch SW2, the second switch SW4 and the fourth switch SW5 are NMOS transistors, and the third switch SW3 is a PMOS transistor.

In a specific implementation, before the data line 2 is powered on and matched with the charger 1, the first end of the single bus controller 24 is pulled up to the VBUS pin through the second resistor R1, and the second end of the single bus controller 24 is pulled up to the VBUS pin through the second resistor R1. The third resistor R2 is pulled up to the VBUS pin, and the third end of the single bus controller 24 is pulled up to the VBUS pin through the fourth resistor R3, so that the control end of the first switch SW2 and the control end of the second switch SW4 There is a high level on the switch, so that the first switch SW2 is closed, and the second switch SW4 is closed. At this time, the control terminal of the third switch SW3 and the control terminal of the fourth switch SW5 are grounded through the first switch SW2, so that the third switch The control terminal of SW3 and the control terminal of the fourth switch SW5 have a low level, so that the third switch SW3 is turned off and the fourth switch SW5 is turned on.

In this embodiment, after the data line 2 is powered on and successfully matched with the charger 1, the single bus controller 24 is configured to output the first low voltage through the second end of the single bus controller 24 in response to the first control command level signal, the single bus controller 24 is further configured to output a second low level signal through the third terminal of the single bus controller 24 in response to the second control command.

Specifically, when the single-bus controller 24 outputs a low-level signal to the control terminal of the first switch SW2, the first switch SW2, which is an NMOS transistor, is turned off. At this time, the control terminal of the third switch SW3 is pulled up to the VBUS pin through the fifth resistor R4, so that the control terminal of the third switch SW3 has a high-level signal, so that the third switch SW3, which is a PMOS transistor, is disconnected . In addition, the control terminal of the fourth switch SW5 also has a high level signal, so that the fourth switch SW5 which is an NMOS transistor is closed.

In addition, the single-bus controller 24 also outputs a low-level signal to the control terminal of the second switch SW4 after a preset time after outputting the low-level signal to the control terminal of the first switch SW2, so that the first signal of the NMOS transistor is the first The second switch SW4 is turned off.

In this way, when the data line 2 is powered on and successfully matched with the charger 1 , the CC line is connected, and the CC line is disconnected from the VBUS pin and the single-bus controller 24 .

In addition, after the data line 2 is powered on and fails to match with the charger 1, the single-bus controller 24 outputs a high level to the control terminal of the first switch SW2, so that the first switch SW2, which is an NMOS transistor, is closed. At this time, the third The control terminal of the switch SW3 and the control terminal of the fourth switch SW5 are both grounded through the first switch SW2, so that the third switch SW3, which is a PMOS transistor, is closed, and the fourth switch SW5, which is an NMOS transistor, is opened.

In addition, the single bus controller 24 also outputs a level-on signal to the control terminal of the second switch SW4, so that the second switch SW4, which is an NMOS transistor, is closed.

In this way, when the data line 2 is powered on and does not match the charger 1, the CC line is disconnected, and the CC line is connected to the VBUS pin and the single-bus controller 24, so that the device to be charged can be Non-PD charging communication is triggered based on the electrical signal received on the CC pin.

It should be noted that when the data line is not connected to the power supply or the device to be charged, both the second switch SW4 and the fourth switch SW5 are in a closed state, and the first switch SW2 and the third switch SW3 are in an open state, So that the single bus controller 24 is connected to the CC line, so that the control command sent by the control unit 12 in the charger 1 can be received through the CC pin.

It should be noted that, in a specific implementation, the above-mentioned switch module may also include a digital signal control switch, such as a switch switch group, etc., which will not be described in detail here.

As an optional implementation manner, as shown in FIG. 5 , the D+ pin, D- pin, VBUS pin and GND pin in the first Type-A interface 21 are located on the first Type-A interface 21 . On one side, the first CC pin is located on the second side of the first Type-A interface 21 , and the first side and the second side are located on opposite sides of the first Type-A interface 21 .

Of course, the distribution position of each pin in the first Type-A interface 21 can also be exchanged or changed, which is not specifically limited here. In addition, the structure and working principle of the VBUS pin and the GND pin are the same as the VBUS pin in the prior art. The structure and working principle of the pin and the GND pin are the same, and will not be described in detail here.

In this embodiment, the CC pin is arranged on the second side of the first Type-A interface 21, so that the GND pin, D+ pin, D pin on the first side of the first Type-A interface 21 can be - The structure and position distribution of pins and VBUS pins are the same as the Type-A interface in the prior art, so that the data line provided in this embodiment of the present application can be connected to a charger with a conventional Type-A interface.

Of course, in the case where the data line 2 provided in the embodiment of the present application is connected to a charger provided with a conventional Type-A interface, since the CC pin is not set in the conventional Type-A interface, the first Type-A The CC pin in the interface 21 cannot transmit identification information. At this time, the charging device only supports the fast charging method of transmitting the charging signal through the D+ pin and the D- pin.

Correspondingly, as shown in FIG. 6 , the distribution positions of the pins in the second Type-A interface in the charger 1 provided by the embodiment of the present application are the same as those in the first Type-A interface 21 shown in FIG. 5 . The distribution positions of the pins correspond one-to-one, and are also compatible with data lines with conventional Type-A interfaces, which will be repeated here.

In operation, when the charger 1 provided in the embodiment of the present application is connected to a data line provided with a conventional Type-A interface, since the CC pin is not set in the conventional Type-A interface, the second Type-A interface is not provided with a CC pin. The CC pin in the -A interface cannot transmit identification information. At this time, the charging device only supports the fast charging method of transmitting the charging signal through the D+ pin and the D- pin.

It should be noted that the charger 1 provided in the embodiment of the present application can also be connected to a conventional data line, and can perform non-PD charging on the device to be charged. As shown in FIG. 7 , the charger 1 is connected to a conventional data line below. Or take the workflow when the data line 2 is connected as shown in Figure 3 as an example for specific description:

Step 701 , determine whether the charger 1 is connected to a power source.

Wherein, the above charger 1 is the charger 1 provided by the embodiment of the application.

In the case that the judgment result of this step is "Yes", step 702 is executed, otherwise, it can continue to wait until the charger 1 is connected to the power supply.

Step 702, judging whether the standard data line 2 is connected.

The above-mentioned standard data line 2 is the data line 2 provided by the embodiment of the application.

If the judgment result of this step is "Yes", step 703 is performed, otherwise, step 704 may be performed.

In a specific implementation, when it is detected that the charger 1 is connected to the power source, but no data cable is connected, it can continue to wait until the charger 1 is connected to the data cable.

Step 703 , the single bus controller is started, and the identification information and the control signals of the second terminal and the third terminal of the single bus controller are initialized.

The initialization identification information can be understood as reading pre-stored identification information for the control unit 12 in the charger 1 to read.

The above-mentioned control signals of the second terminal and the third terminal of the initial single bus controller can be understood as: the single bus controller outputs electrical signals through the second terminal and the third terminal, so that the first switch SW2, the second switch SW4 and the third The switch SW3 is turned on, and the fourth switch SW5 is turned off.

It should be noted that, at this time, the control unit 12 in the charger 1 is connected to the fourth CC pin.

Step 705: The control unit 12 communicates with the single-bus controller 24 via the CC wiring.

In this step, the control unit 12 reads the identification information pre-stored in the single-bus controller 24 through the CC wiring.

Step 706 , determine whether the data line 2 and the charger 1 are successfully matched.

In this step, the control unit 12 determines whether the pre-stored identification information matches the identification information read from the single-bus controller 24 .

If the judgment result of this step is "Yes", step 708 is performed; otherwise, step 707 may be performed.

Step 707: SW1 connects the CC pin with the control unit 12, SW2, SW3 and SW4 are turned on, and SW5 is turned off.

At this time, SW1 disconnects the CC pin from the PD charging processing unit 13, so that the PD charging channel is disconnected, and only the non-PD charging processing unit 14 can perform charging communication with the device to be charged via the D+ pin and the D- pin , to perform non-PD charging functions.

Step 708 , SW1 connects the CC pin with the PD charging processing unit 13 , SW2 , SW3 and SW4 are turned off, and SW5 is turned on.

At this time, SW1 disconnects the CC pin from the control unit 12, and the CC communication channel is connected, so that the PD charging processing unit 14 can perform charging communication with the device to be charged via the CC wiring to perform the PD charging function.

Step 709: The charger 1 communicates with the device to be charged through the data line. If the device to be charged supports PD charging, PD charging is performed, and if the device to be charged does not support PD charging, D+/D- protocol charging is performed.

Step 704: The charger cannot read the matching identification information, and judges that it is connected to a non-standard data cable.

Step 710 , perform D+/D- protocol charging.

Through the above process, when the charger 1 provided in the embodiment of the present application is connected with the standard data cable 2, the PD charging function and the non-PD charging function can be realized, and when the charger 1 is connected with the non-standard data cable, the PD charging function and the non-PD charging function can be realized. Non-PD charging function.

Correspondingly, the data cable 2 provided in the embodiment of the present application can also be connected to a conventional charger, and can perform non-PD charging on the device to be charged. As shown in FIG. As shown in Figure 2, the work flow when the charger 1 is connected is taken as an example to describe in detail:

Step 801: Determine whether the non-standard charger is connected to a power source.

The above-mentioned non-standard charger is not the charger 1 provided in the embodiment of the present application, and it can be any charger with a Type-A interface.

In the case that the judgment result of this step is "Yes", step 802 is executed, otherwise, it can continue to wait until the charger 1 is connected to the power supply.

Step 802, judging whether the standard data line 2 is connected.

The above-mentioned standard data line 2 is the data line 2 provided by the embodiment of the application.

If the judgment result of this step is "Yes", step 804 is performed; otherwise, step 803 may be performed.

Step 803 , perform D+/D- protocol charging.

The above-mentioned process of performing D+/D- protocol charging is the same as the process of performing D+/D- protocol charging in the prior art, and will not be repeated here.

Step 804 , the single bus controller is started, and the identification information and the control signals of the second terminal and the third terminal of the single bus controller are initialized.

The initialization identification information can be understood as reading pre-stored identification information for the charger to read.

The above-mentioned control signals of the second terminal and the third terminal of the initial single bus controller can be understood as: the single bus controller outputs electrical signals through the second terminal and the third terminal, so that the first switch SW2, the second switch SW4 and the third The switch SW3 is turned on, and the fourth switch SW5 is turned off.

Step 805, the pairing fails.

It should be noted that there is no CC pin in the conventional charger, so the identification information in the single bus controller 24 will not be actively obtained through the CC pin, and control commands will not be sent to the single bus controller 24 through the CC pin. , so that the data line 2 fails to match the charger.

Step 806, the first switch SW2, the second switch SW4 and the third switch SW3 are kept on, the fourth switch SW5 is kept off, and the D+/D- protocol charging is performed.

Through the above process, when the data cable 2 provided in the embodiment of the present application is connected to a non-standard charger, the non-PD charging function can be realized.

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.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.

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 (10)

1. a data line, is characterized in that, comprises: the first Type-A interface, Type-C interface, single bus controller and switch module; The first Type-A interface and the Type-C interface both include D+ pins, D- pins, VBUS pins and GND pins, and the first Type-A interface and the Type-C interface The D+ pins, D- pins, VBUS pins and GND pins are connected in one-to-one correspondence, the first Type-A interface also includes a first CC pin, and the Type-C interface also includes a second CC pin pin; the switch module is connected to the first CC pin, the single bus controller and the second CC pin; When the data cable is connected to the charger, if the charger is the first charger, the switch module connects the first CC pin and the second charger under the control of the single-bus controller. CC pin, and disconnect the first CC pin from the single-bus controller; if the charger is the second charger, the switch module is connected to the single-bus controller under the control of the The first CC pin and the single bus controller are disconnected, and the first CC pin and the second CC pin are disconnected; Wherein, when the single-bus controller is connected to the first CC pin, the single-bus controller determines the charger and the data line based on the identification information transmitted through the first CC pin When matching, the charger is the first charger; based on the identification information transmitted by the first CC pin, the single-bus controller determines that the charger does not match the data line, the The charger is the second charger. 2. The data line according to claim 1, wherein the Type-C interface further comprises a third CC pin, and the data line is also provided with a first resistance; When the data line is connected to the second charger, the switch module is further configured to connect the third CC pin to the VBUS through the first resistor under the control of the single bus controller pin connection. 3 . The data line according to claim 2 , wherein the switch module comprises a first switch, a second switch, a third switch, a fourth switch, a second resistor, a third resistor, a fourth resistor, and a third switch. 4 . Five resistors; The first end of the second resistor, the first end of the third resistor, the first end of the fourth resistor, and the first end of the fifth resistor are all connected to the VBUS pin in the data line. connected, the second end of the second resistor is connected to the first end of the single bus controller, the second end of the third resistor is connected to the second end of the single bus controller, the fourth The second end of the resistor is connected to the third end of the single bus controller, and the second end of the fifth resistor is connected to the first end of the first switch; The second end of the single-bus controller is connected to the control end of the first switch, the second end of the first switch is connected to the ground end, and the first end of the first switch is also connected to the third The control end of the switch is connected to the control end of the fourth switch, the first end of the third switch is connected to the VBUS pin in the data line, and the second end of the third switch passes through the first The resistor is connected to the third CC pin, the first end of the fourth switch is connected to the first CC pin, and the second end of the fourth switch is connected to the second CC pin; The third end of the single bus controller is connected to the control end of the second switch, the first end of the second switch is connected to the first CC pin, and the second end of the second switch is connected to the first CC pin. the first end of the single bus controller is connected; The single-bus controller is configured to control the switching state of the first switch through the second terminal of the single-bus controller, and after controlling the switching state of the first switch, the single-bus controller The third terminal of the control the switch state of the second switch; When the first switch is turned off, the third switch is turned on, and the fourth switch is turned off; When the first switch is closed, the third switch is open and the fourth switch is closed. 4 . The data line of claim 3 , wherein the first switch, the second switch, the third switch and the fourth switch are transistors. 5 . 5 . The data line according to claim 3 , wherein the first switch, the second switch and the fourth switch are NMOS transistors, and the third switch is a PMOS transistor. 6 . 6. The data line according to claim 1, wherein the D+ pin, the D- pin, the VBUS pin and the GND pin in the first Type-A interface are located in the first Type-A interface the first side, the first CC pin is located on the second side of the first Type-A interface, the first side and the second side are located on the first Type-A interface opposite sides. 7. A charging device, comprising a charger and a data cable connected to the charger, wherein the data cable is the data cable according to any one of claims 1-6, and the charger comprises The second Type-A interface, the control unit, the switching unit, the PD charging processing unit and the non-PD charging processing unit, and the second Type-A interface includes the fourth CC pin, D+ pin, D- pin, VBUS pin and GND pin, the fourth CC pin is connected to the first CC pin, and the D+ pin in the second Type-A interface and the first Type-A interface of the data line , D-pin, VBUS pin and GND pin are connected one by one; The switching unit is connected to the control unit, the PD charging processing unit and the fourth CC pin, and the D+ pin and the D- pin in the second Type-A interface are connected to the non-PD charging processing unit connection; When the control unit determines that the charger matches the data line based on the identification information transmitted by the fourth CC pin, the single bus controller controls the switch module to connect the first CC pin and the second CC pin, and disconnect the first CC pin and the single-bus controller, and the control unit also controls the switching unit to disconnect the control unit and the fourth CC pin, and connect the fourth CC pin with the PD charging processing unit, so that the PD charging processing unit performs PD charging on the device to be charged based on the CC signal transmitted through the fourth CC pin, or makes The non-PD charging processing unit performs non-PD charging on the device to be charged based on the communication signal transmitted through the D+ pin and the D- pin. 8 . The charging device according to claim 7 , wherein the control unit pre-stores second identification information, and the control unit compares the first identification information obtained through the fourth CC pin with the When the second identification information matches, the first control command is sent to the single-bus controller through the fourth CC pin, and the fourth CC pin is sent after the first preset time of sending the first control command. Send a second control command to the single bus controller, and control the switching unit to disconnect the control unit and the fourth CC pin, and connect the fourth CC pin and the PD charging processing unit ; The single bus controller controls the switch module to connect the first CC pin and the second CC pin in response to the first control instruction, and the single bus controller responds to the The second control instruction controls the switch module to disconnect the first CC pin from the single-bus controller. 9 . The charging device according to claim 8 , wherein the switch module comprises a first switch, a second switch, a third switch, a fourth switch, a second resistor, a third resistor, a fourth resistor and a fifth resistor, and the first switch, the second switch, and the fourth switch are NMOS transistors, and the third switch is a PMOS transistor, the single-bus controller is used to respond to the first switch a control instruction, outputting a first low-level signal via the second terminal of the single-bus controller, and the single-bus controller is further configured to respond to the second control instruction, outputting a first low-level signal via the third terminal of the single-bus controller The terminal outputs a second low-level signal. 10 . The charging device according to claim 7 , wherein, when the charging device is connected to a device to be charged, if the device to be charged supports PD charging, the charging device is based on the data transmitted on the CC pin. 11 . The CC signal performs PD charging on the device to be charged; if the device to be charged does not support PD charging, the charging device performs non-PD charging on the device to be charged based on the communication signals transmitted by the D+ pin and the D- pin. Charge.

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