CN111817096A - Data cables and charging equipment - Google Patents

Abstract

The application discloses a data cable and a charging device, belonging to the technical field of communication. Wherein, the data line includes: Type-A interface and Type-C interface, the VBUS pin, communication pin and GND pin in the first Type-A interface and Type-C interface are connected in one-to-one correspondence. When a charger is connected, the first switching circuit in the data line controls the CC pin in the first Type-A interface to communicate with the CC pin in the Type-C interface; when the data line is connected with the second charger When , the first switching circuit controls the CC pin in the first Type-A interface to be disconnected from the CC pin in the Type-C interface, and the CC pin in the Type-C interface is connected with the VBUS pin. The embodiment of the present application can implement the PD charging function through the CC pin when the data line is connected to the first charger.

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 to quickly charge devices such as notebook computers. In order to support the PD protocol charging, the charger needs to use a CC signal line for communication. The charger supporting the PD protocol charging usually It adopts the third standard (Type-C) interface and is equipped with a Type-C to Type-C data cable. For the data line using the first standard (Type-A or Standard-A) interface, since it does not have a connected CC line, PD charging is not supported.

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, and a cable connected between the first Type-A interface and the Type-C interface The first Type-A interface and the Type-C interface include VBUS pins, CC pins, communication pins and GND pins, and the first Type-A interface and the Type-C interface The VBUS pins, communication pins and GND pins in the interface are connected in one-to-one correspondence;

The data line is provided with a first switching circuit, the CC pin in the first Type-A interface is connected to the detection end of the first switching circuit and the first end of the first switching circuit, the first The second end of a switching circuit is connected to the CC pin in the Type-C interface, and the third end of the first switching circuit is connected to the VBUS pin;

In the case where the data cable is connected to a charger, if the charger is the first charger, the first switching circuit controls the CC pin in the first Type-A interface to be connected to the Type-A interface. The CC pin in the C interface is connected, and the CC pin in the Type-C interface is disconnected from the VBUS pin; if the charger is the second charger, the first switching circuit controls the The CC pin in the described first Type-A interface is disconnected from the CC pin in the Type-C interface, and the CC pin in the Type-C interface is communicated with the VBUS pin;

Wherein, when the data line is connected to the first charger, the first switching circuit obtains a first preset electrical signal through the CC pin, and the first charger supports PD charging The charger; when the data line is connected to the second charger, the first switching circuit obtains the first preset electrical signal without the CC pin, the second charger For chargers that do not support PD charging.

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 described in the first aspect, and the charger includes a second Type-A interface and protocol control module, the second Type-A interface includes VBUS pin, CC pin, communication pin and GND pin, and the second Type-A interface and the first Type-A interface The VBUS pin, CC pin, communication pin and GND pin in the A interface are connected in one-to-one correspondence;

The protocol control module includes a target power supply, the first end of the protocol control module is connected to the CC pin in the charger and the target power supply, and the communication pin in the charger is connected to the protocol control pin. The second end of the module is connected, and when the charging device is connected to a power supply, the first switching circuit obtains the first preset electrical signal through the CC pin;

In the case where the charging device is connected to the device to be charged, if the protocol control module obtains the communication signal transmitted through the CC pin, the device to be charged will be PD charged; if the protocol control module After acquiring the communication signal transmitted through the communication pin, non-PD charging is performed on the device to be charged.

The data line provided by the embodiment of the present application includes a first Type-A interface and a Type-C interface, and a first switching circuit is arranged in the data line. When the data line is connected to a matching first charger, the first switching circuit is The CC pin in a Type-A interface can be connected with the CC pin in the first charger; when the data line is connected with the unmatched second charger, the Type-A interface of the second charger is not set CC pin, at this time, the electrical signal value on the CC pin in the first Type-A interface is different from the electrical signal value when connecting the CC pin in the first charger, so according to the first Type-A interface The value of the electrical signal on the CC pin distinguishes whether the data line is connected with the matching first charger, and in the case where the data line is connected with the first charger, the first switching circuit controls the first Type-A interface. The CC pin is connected with the CC pin in the Type-C interface, so that the first charger can transmit the PD communication signal with the device to be charged through the CC pin in the data line provided by the embodiment of the application, thereby realizing PD charging function.

Description of drawings

FIG. 1 is one of the circuit diagrams of the first charging device provided by the embodiment of the present application;

2a is one of the circuit diagrams of the target power supply in the charging device provided by the embodiment of the present application;

2b is the second circuit diagram of the target power supply in the charging device provided by the embodiment of the present application;

FIG. 3 is the second circuit diagram of the first charging device provided by the embodiment of the present application;

4a is one of the circuit diagrams of the first switching circuit in the data line provided by the embodiment of the present application;

4b is the second circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

4c is the third circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

4d is the fourth circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

4e is the fifth circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

4f is the sixth circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

4g is the seventh circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

4h is the eighth circuit diagram of the first switching circuit in the data line provided by the embodiment of the present application;

FIG. 5 is a circuit diagram of a second charging device provided by an 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 FIG. 1 , which is one of the circuit diagrams of the first charging device provided by the embodiment of the present application. The charging device may include a charger 1 and a data cable 2, and the charger 1 and the data cable 2 are connected through a Type-A interface.

Specifically, as shown in FIG. 1, the data line 2 includes a first Type-A interface 21, a Type-C interface 22, and a cable 23 connected between the first Type-A interface 21 and the Type-C interface 22; A Type-A interface 21 and a Type-C interface 22 both include a VBUS pin, a CC pin, a communication pin and a GND pin, and the VBUS pins in the first Type-A interface 21 and the Type-C interface 22, The communication pins and the GND pins are connected in one-to-one correspondence.

The data line 2 is provided with a first switching circuit 24, and the CC pin in the first Type-A interface 21 is connected to the detection terminal of the first switching circuit 24 and the first terminal of the first switching circuit 24. The first switching circuit The second end of the 24 is connected to the CC pin of the Type-C interface 22, and the third end of the first switching circuit 24 is connected to the VBUS pin.

During operation, when the data line 2 is connected to the charger 1, if the charger 1 is the first charger, the first switching circuit 24 controls the CC pin in the first Type-A interface 21 to be connected to the Type-C The CC pin in the interface 22 is connected, and the CC pin in the Type-C interface 22 is disconnected from the VBUS pin; if the charger 1 is the second charger, the first switching circuit 24 controls the first Type-C The CC pin in the A interface 21 is disconnected from the CC pin in the Type-C interface 22, and the CC pin in the Type-C interface 22 is communicated with the VBUS pin;

Wherein, when the data line 1 is connected to the first charger, the first switching circuit 24 obtains the first preset electrical signal through the CC pin, and the first charger supports PD charging When the data line 2 is connected to the second charger, the first switching circuit 24 obtains the first preset electrical signal without the CC pin, and the second charger does not support PD rechargeable charger.

In practical applications, when the first switching circuit 24 connects the CC pin in the first Type-A interface 21 with the CC pin in the Type-C interface 22, the first switching circuit 24 also disconnects the Type-C The connection relationship between the CC pin in the interface 22 and the VBUS pin. At this time, the CC pins at both ends of the data line 1 are connected, so that the PD signal can be transmitted through the CC pins.

In addition, when the first switching circuit 24 disconnects the connection relationship between the CC pin in the first Type-A interface 21 and the CC pin in the Type-C interface 22, the first switching circuit 24 also connects the Type-C interface 22. - CC pin and VBUS pin in C interface 22. At this time, the CC pins at both ends of the data line 1 are disconnected, so that the PD charging signal cannot be transmitted through the CC pin, and when the CC pin in the Type-C interface 22 is connected to the VBUS pin, the CC pin's The structure and function are the same as those of the CC pin in the prior art, and are not repeated here.

In a specific implementation, the one-to-one connection of the VBUS pins, communication pins and GND pins in the first Type-A interface 21 and the Type-C interface 22 can be understood as: the VBUS in the first Type-A interface 21 The pin is connected with the VBUS pin in the Type-C interface 22, the communication pin in the first Type-A interface 21 is connected with the communication pin in the Type-C interface 22, and the GND in the first Type-A interface 21 The pin is connected to the GND pin in the Type-C interface 22 .

In addition, the above-mentioned communication pins may be the D+ pin and the D- pin in the second-generation universal serial bus (USB 2.0). At this time, the D+ pin in the first Type-A interface 21 and the Type-C interface 22 The D+ pin in the first Type-A interface 21 is connected with the D- pin in the Type-C interface 22 .

It should be noted that, in specific implementation, the above-mentioned communication pins can also be the communication pins (TX pin and RX pin) in the USB 3.0 interface, or even the communication pins in the USB 4.0 interface that may appear in the future pins, which are not specifically limited here.

In addition, the above-mentioned first charger may be a charger that matches the data line 2 , and the above-mentioned second charger may be a charger that does not match the data line 2 . And the first charger supports PD charging. Specifically, the first charger may be the charger 1 shown in FIG. 1 , and the data cable 2 provided in the embodiment of the present application is connected to the charger 1 shown in FIG. 1 . When the PD charging function of the device to be charged can be realized.

Specifically, as shown in FIG. 1 , the charger 1 includes: a second Type-A interface 11 and a protocol control module 12 , and the second Type-A interface 11 includes a VBUS pin, a CC pin, a communication pin and a GND pin pin, and the VBUS pin, CC pin, communication pin and GND pin in the second Type-A interface 11 and the first Type-A interface 21 are connected in one-to-one correspondence;

The protocol control module 12 includes a target power supply 121, the first end of the protocol control module 12 is connected to the CC pin in the charger 1 and the target power supply 121, and the communication pin in the charger 1 is connected to the The second end of the protocol control module 12 is connected, and when the charging device is connected to a power source, the first switching circuit 24 obtains the first preset electrical signal through the CC pin;

In the case where the charging device is connected to the device to be charged, if the protocol control module 12 obtains the communication signal transmitted through the CC pin, the device to be charged is PD charged; if the protocol controls The module 12 acquires the communication signal transmitted through the communication pin, and then performs non-PD charging on the device to be charged.

Among them, the VBUS pin, CC pin, communication pin and GND pin in the second Type-A interface 11 and the first Type-A interface 21 are connected in one-to-one correspondence with the first Type-A interface 21 and The VBUS pins, the communication pins, and the GND pins in the Type-C interface 22 are connected in one-to-one correspondence in the same manner, which will not be repeated here.

In operation, it should be noted that, in the specific implementation, the protocol control module 12 is configured with at least a PD communication protocol, and can also be configured with a non-PD charging communication protocol. Specifically, the above PD communication protocol is transmitted through the CC pin. The communication protocol of the charging signal, the above-mentioned non-PD communication protocol can be the communication protocol of the charging signal transmitted through the communication pin, for example: in the case where the communication pin is the D+ pin and the D- pin, the above-mentioned non-PD communication protocol It can be called D+/D- communication protocol.

At this time, the charger 1 can directly negotiate non-PD charging with the device to be charged through the communication pin of the data line 2 without transmitting through the CC pin. Specifically, in the case where the communication pins include D+ pins and D- pins, a preset communication protocol can be configured in the above charger 1, and the communication signals of the preset communication protocol are transmitted through the D+ pins and the D- pins. , through the communication signal negotiation of the preset communication protocol, the charging parameters of DP/DM (where DM is the data negative signal (DataMinus) and DP is the data positive signal (Data Positive)) can be determined for fast charging, so as to realize the standard configuration of the charging equipment DP, DM fast charging function of the device to be charged. Of course, in the specific implementation, the charger 1 can also be configured with a general protocol, the communication signal of the general protocol can also be transmitted through the D+ pin and the D- pin, and the general protocol is transmitted through the D+ pin and the D- pin. The communication signal can realize the DP/DM charging of the device to be charged that is not standard with the charging device, and its principle is the same as the DP/DM charging process in the prior art, which will not be repeated here.

In application, the standard equipment to be charged of the charging equipment provided in the embodiment of the present application is also pre-configured with the above-mentioned preset communication protocol, so that charging parameters can be negotiated based on the preset communication protocol, and charging parameters determined through negotiation can be benchmarked. Equipped with the device to be charged for standard charging.

In addition, when the charging device is connected to a non-standard device to be charged that supports PD charging as shown in FIG. 1 , because the non-standard device to be charged is not configured with the above-mentioned preset communication protocol, only PD communication can be implemented.

Of course, as shown in Figure 1, the charging device can also be connected to the device to be charged that is not standard and does not support PD charging. The general communication protocol of the signal) negotiates charging parameters, and charges the non-standard to-be-charged device according to the negotiated charging parameters, or directly charges the to-be-charged device according to the default charging parameters.

In one embodiment, the above-mentioned target power source 121 may be a voltage source connected in series with the resistor Ra as shown in FIG. 2 a , and the voltage source may be the VBUS pin in the charger 1 .

In this embodiment, when the charger 1 is connected to the power supply, the VBUS pin can have a voltage, so that the level value on the CC pin can be changed through the resistor Ra. In this way, when the charger 1 is connected to the data line 2 provided by the embodiment of the present application, the first switching circuit 24 can detect the first preset electrical signal through the CC pin in the first Type-A interface 21, and Accordingly, the CC pin in the first Type-A interface 21 and the CC pin in the Type-C interface 22 are connected.

In another embodiment, the above-mentioned target power source 121 may be a current source Ia as shown in FIG. 2b. When the current source Ia is connected to the CC pin in the first Type-A interface 21 , the level value on the CC pin can also be changed, thereby enabling the first switching circuit 24 to pass through the first Type-A interface 21 . The CC pin of the device detects the first preset electrical signal, and accordingly connects the CC pin in the first Type-A interface 21 and the CC pin in the Type-C interface 22 .

It should be noted that the data cable 2 provided in the embodiment of the present application can also be connected to a conventional charger, and the charger has a conventional Type-A interface, and the conventional Type-A interface is the same as the Type-A in the prior art. The structure of the interface is the same, it does not include the CC pin.

In this way, when the data line 2 provided in the embodiment of the present application is connected to the conventional charger, the CC pins in the first Type-A interface 21 do not have correspondingly connected CC pins, so that the first switching circuit 24 cannot be enabled. The first preset electrical signal is detected through the CC pin in the first Type-A interface 21, thereby disconnecting the CC pin in the first Type-A interface 21 and the CC pin in the Type-C interface 22, and Will. The CC pin in the Type-C interface 22 is pulled up to the VBUS pin.

In addition, as shown in FIG. 1 or FIG. 3 , the device to be charged has a pull-down resistor RP connected to the CC pin. When the CC pin in the Type-C interface 22 is connected to the VBUS pin, the pull-down resistor RP is connected to the third The resistor R3 constitutes a proportional resistor. At this time, the pull-down resistor RP has a positive voltage value. When the device to be charged detects that the pull-down resistor RP has a positive voltage value, it can control the charging module 31 charged by the device to be charged and the charging device. communication to allow charging of the charging device.

At this time, the structure of the data line 2 provided by the embodiment of the present application is the same as that of the conventional Type-Ato Type-C data line in the prior art, and the charger can only negotiate charging parameters with the device to be charged through the communication pin, that is, only Capable of non-PD charging of the device to be charged.

As an optional implementation manner, as shown in FIG. 3 , the first switching circuit 24 includes a first switch control module 241, a first switch Q1 and a second switch Q2, and the data line further includes a pull-up resistor R3 .

Specifically, the first input terminal of the first switch control module 241 is connected to the CC pin of the first Type-A interface 21, and the second input terminal of the first switch control module 241 is connected to the VBUS pin. The third end of the first switch control module 241 is connected to the control end of the first switch Q1 and the control end of the second switch Q2, and the first end of the first switch Q1 is connected to the CC lead in the first Type-A interface 21. pin connection, the CC pin in the Type-C interface 22 is connected to the second end of the first switch Q1 and the first end of the second switch Q2, the pull-up resistor R3 is connected to the second end of the second switch Q2 and all between the VBUS pins described above.

In operation, when the level value on the CC pin is greater than or equal to the first preset threshold, the first switch control module 241 controls the first switch Q1 to be turned on after the first preset time, and controls the second The switch Q2 is turned off after the first preset time; when the level value on the CC pin is less than the first preset threshold, the first switch control module 241 controls the first switch Q1 in the second preset time. It is turned off after a preset time, and the second switch Q2 is controlled to be turned on after the second preset time.

In a specific implementation, the above-mentioned first switch Q1 and second switch Q2 may be switches controlled by analog signals, such as triodes, transistors, etc. At this time, the first switch control module 241 sends a signal to the first switch Q1 and the second switch Q2. The analog control signal is used to control the switching states of the first switch Q1 and the second switch Q2. Of course, the above-mentioned first switch Q1 may also be a switch controlled by a digital signal, and the first switch control module 241 sends a digital control signal to the first switch Q1 and the second switch Q2 to control the switching of the first switch Q1 and the second switch Q2 switch status.

In addition, the first preset time and the second preset time can be determined according to the application scenario of the data line 2. For example, when the data line 2 is used to transmit CC signals, if the transmission frequency of the CC signals is high, the first preset time The preset time and the second preset time may be shorter; if the transmission frequency of the CC signal is low, the first preset time and the second preset time may be longer.

In this embodiment, when the level value on the CC pin changes, the on-off state of the CC pin can be switched after a delay for a period of time, thereby reducing the frequent switching of the switching states of the first switch Q1 and the second switch Q2, Improve the stability of data cable 2.

As an optional implementation manner, as shown in FIG. 3 , the first switch control module 241 includes a third switch Q3 , a first resistor R1 , a second resistor R2 and a first capacitor C1 .

Specifically, the control terminal of the third switch Q3 is connected to the CC pin of the first Type-A interface 21, the first terminal of the first resistor R1 is connected to the VBUS pin, and the first terminal of the second resistor R2 is connected to the VBUS pin. The control terminal of the first switch Q1 and the control terminal of the second switch Q2; the second terminal of the third switch Q3 is connected to the second terminal of the first resistor R1 and the second terminal of the second resistor R2, and the second terminal of the third switch Q3 The three terminals are connected to the first terminal of the first capacitor C1 and the ground terminal, and the second terminal of the first capacitor C1 is connected to the first terminal of the second resistor R2.

In this embodiment, the above-mentioned third switch Q3 may be an analog signal controlled switch, which may specifically be a triode or a transistor, etc., which is not specifically limited herein.

In addition, the discharge efficiency of the first capacitor C1 matches the first preset time, and the charging efficiency of the first capacitor C1 matches the second preset time. Specifically, when the CC pin starts to transmit a signal, the first capacitor C1 starts to be charged, and when the first capacitor C1 is charged to the turn-on voltage of the third switch Q3, the third switch Q3 is turned on. In addition, after the third switch Q3 is turned on, if the CC pin stops transmitting signals, the first capacitor C1 starts to discharge, and when the first capacitor C1 discharges to a voltage lower than the turn-on voltage of the third switch Q3, the third switch Q3 is disconnected.

In this embodiment, the above-mentioned first switch control module 241 is set as an analog circuit, so as to avoid setting up a digital control unit with more complicated structure and logic and higher cost.

Further, as shown in FIG. 3 , the first switch Q1 is an N-type metal-oxide-semiconductor (N-Metal-Oxide-Semiconductor, NMOS) transistor, and the second switch Q2 and the third switch Q3 are PNP transistors or P-type transistors. Metal-Oxide-Semiconductor (P-Metal-Oxide-Semiconductor, PMOS) tube.

In this way, when an electrical signal is transmitted on the CC pin, the first pole of the third switch Q3 receives a high voltage and turns on the second pole and the third pole (ie, the second terminal and the third pole of the third switch Q3 are connected. terminal), start to charge the first capacitor C1 at this time, when C1 is charged to the turn-on voltage of the first switch Q1 and the turn-off voltage of the second switch Q2, the first switch Q1 turns on its second and third terminals, and the first switch Q1 turns on its second and third terminals. Two switches Q2 open their second and third terminals.

In addition, after the second pole and the third pole of the third switch Q3 are turned on, if the CC pin stops transmitting electrical signals, the first pole of the third switch Q3 receives the low voltage signal and disconnects the second terminal. and the third terminal, at this time, C1 starts to discharge, when the voltage of C1 drops to the cut-off voltage of the first switch Q1, the first switch Q1 disconnects its second and third terminals, when the voltage of C1 drops to the second When the voltage of the switch Q2 is turned on, the second switch Q2 connects the second terminal and the third terminal thereof.

It should be noted that, in the specific implementation, the first switch control module 241 may also be other circuit structures, and it only needs to ensure that when there is an electrical signal transmission on the CC, the output signal of the first switch control module 241 can be used to control the second switch control module 241. The switch Q2 disconnects the second terminal and the third terminal, and controls the third switch Q3 to connect the second terminal and the third terminal; when there is no electrical signal transmission on the CC, the output signal of the first switch control module 241 can be used for The second switch Q2 is controlled to connect the second terminal and the third terminal, and the third switch Q3 is controlled to disconnect the second terminal and the third terminal.

Specifically, the first switch control module 241 may be any one of the circuit structures shown in FIGS. 4a-4h.

The difference between the first switch control module 241 shown in FIG. 4b and the first switch control module 241 shown in FIG. 4a is that the second resistor R2 shown in FIG. 4a is replaced with a diode.

The difference between the first switch control module 241 shown in FIG. 4c and the first switch control module 241 shown in FIG. 4a is that in the first switch control module 241 shown in FIG. 4c , in the first switch control module 241 A third resistor and a fourth switch Q4 are added, wherein the third resistor R3 is connected between the second end of the third switch Q3 and the VBUS pin, the fourth switch Q4 is a transistor switch, and its control end is connected to the third switch Q3 The second end is connected between the first resistor R1 and the second resistor R2, and the third end is connected to the third end of the third switch Q3.

The difference between the first switch control module 241 shown in FIG. 4d and the first switch control module 241 shown in FIG. 4a is that in the first switch control module 241 shown in FIG. 4d , the CC pin is connected to the third switch A diode D1 is added between the first terminals of Q3, the second resistor R2 is omitted, and the first capacitor C1 is connected between the first terminal and the third terminal of the third switch Q3.

The difference between the first switch control module 241 shown in FIG. 4e and the first switch control module 241 shown in FIG. 4d is that: in the first switch control module 241 shown in FIG. 4e , the diode D1 is replaced with a second resistor R2.

The difference between the first switch control module 241 shown in FIG. 4f and the first switch control module 241 shown in FIG. 4a is that the third switch Q3 in the first switch control module 241 shown in FIG. 4f is an NMOS transistor.

The difference between the first switch control module 241 shown in FIG. 4g and the first switch control module 241 shown in FIG. 4a is that in the first switch control module 241 shown in FIG. 4g , in the first switch control module 241 of the third switch Q3 A fourth resistor R4 is arranged between the terminal and the third terminal.

The difference between the first switch control module 241 shown in FIG. 4h and the first switch control module 241 shown in FIG. 4a is that in the first switch control module 241 shown in FIG. 4h, in the third switch Q3 A fourth resistor R4 is set between the terminal and the second terminal of the first capacitor C1.

It should be noted that, as shown in FIGS. 4a-4h, the first switch control module 241 can realize that: when there is an electrical signal transmission on the CC, the output signal of the first switch control module 241 can be used to control the second switch Q2 to turn off Its second end and third end, and control the third switch Q3 to connect its second end and third end; when there is no electrical signal transmission on CC, the output signal of the first switch control module 241 can be used to control the second switch Q2 connects the second terminal and the third terminal, and controls the third switch Q3 to disconnect the second terminal and the third terminal, which will not be described in detail here.

The data cable 2 provided in the embodiment of the present application is a Type-AtoType-C data cable, and the data cable 2 can connect the CC cable in the data cable 2 when it is connected to the standard charger 1, so as to pass the CC cable. The cable negotiates the PD charging protocol with the device to be charged, so that Type-A to Type-C can support PD charging. In addition, the data line 2 provided in the embodiment of the present application can also be connected to a conventional charger. At this time, the CC line in the data line 2 is disconnected, and can communicate with the device to be charged through the communication line, thereby realizing non- PD charging.

Please refer to FIG. 5 , which is a circuit diagram of a second type of charging device provided by an embodiment of the present application. As shown in FIG. 5 , the second type of charging device includes a first interface 51 , a second interface 52 , and a circuit connected to the first interface 51 and the The cable 53 between the second interfaces 52, the first interface 51 and the second interface 52 include VBUS pins, CC pins and GND pins, and the first interface 51 and the second interface 52 The VBUS pin and the GND pin are connected in one-to-one correspondence;

The cable 53 is provided with a second switching circuit 54, and the CC pin in the first interface 51 is connected to the detection end of the second switching circuit 54 and the first end of the second switching circuit 54, The second end of the second switching circuit 54 is connected to the CC pin in the second interface 52, and the third end of the second switching circuit 54 is connected to the VBUS pin;

The VBUS pin in the first interface 51 is used for connecting with the first power supply 10, the CC pin in the first interface 51 is used for connecting with the second power supply 20, and the second interface 52 is used for connecting with the second power supply 20. The charging device 30 is connected;

Wherein, when the charging device is connected to a power source (at least one of the first power source 10 and the second power source 20) and the device to be charged 30, the level value on the CC pin in the first interface 51 When greater than or equal to the second preset threshold, the second switching circuit 54 controls the CC pin in the first interface 51 to communicate with the CC pin in the second interface 52, and the second interface 52 The CC pin is disconnected from the VBUS pin; when the level value on the CC pin in the first interface 51 is less than the second preset threshold, the second switching circuit 54 controls the The CC pin in the first interface 51 is disconnected from the CC pin in the second interface 52, and the CC pin in the second interface 52 is connected with the VBUS pin.

The second switching circuit 54 in this embodiment has the same circuit structure as the first switching circuit 24 in FIG. 1 and FIG. 3 , the difference is that the first power supply 10 and the second power supply 20 may be high-power power supplies , for example: 220V or 380V AC power supply, etc., and the device to be charged 30 may be a high-power device, such as a vehicle battery and the like. For the specific working principle of the second switching circuit 54, reference may be made to the working principle of the first switching circuit 24 in FIG. 1 and FIG. 3 , which will not be repeated here.

The second type of charging device provided by the embodiment of the present application can detect the level value on the CC pin, and when the level value on the CC pin in the first interface 51 is greater than or equal to the second preset threshold, it means The second power supply 20 has power output, thereby connecting the first interface 51 and the CC pin in the second section 52, and disconnecting the CC pin in the second interface 52 and the VBUS pin, so as to pass the first interface 51 and the VBUS pin. Two power supply 20 and CC pins charge the device 30 to be charged. In addition, when the level value on the CC pin in the first interface 51 is smaller than the second preset threshold, it means that the second power supply 20 has no power output, so the first interface 51 and the second lesson are disconnected CC pin in 52, and connect the CC pin in the second interface 52 with the VBUS pin, to charge the device to be charged 30 through the first power supply 10 and the VBUS pin, thereby realizing two power supplies and The switching between the charging paths ensures that the device 30 to be charged can be charged.

As an optional implementation manner, as shown in FIG. 5 , the second switching circuit 54 includes a second switch control module 541 , a fourth switch Q23 and a fifth switch Q22 .

Specifically, the first input terminal of the second switch control module 541 is connected to the CC pin of the first interface 51, and the second input terminal of the second switch control module 541 is connected to the VBUS pin , the second end of the second switch control module 541 is connected to the control end of the fourth switch Q23 and the control end of the fifth switch Q22, and the fourth switch Q23 is used to control the CC lead in the first interface The pin is connected to the CC pin in the second interface, and the fifth switch is used to control the connection between the VBUS pin and the CC pin in the second interface.

During operation, the second switch control module 541 controls the fourth switch Q23 to switch on after a third preset time when the acquired level value on the CC pin is greater than or equal to the second preset threshold. turn on, and control the fifth switch Q22 to turn off after the third preset time; the second switch control module 541 obtains that the level value on the CC pin is less than the second preset When the threshold value is reached, the fourth switch Q23 is controlled to be turned off after a fourth preset time, and the fifth switch Q22 is controlled to be turned on after the fourth preset time.

Further, the first end of the fourth switch Q23 is connected to the CC pin of the first interface 51, the second end of the fourth switch Q23 is connected to the CC pin of the second interface 52, and the fifth switch Q22 is connected to the CC pin of the second interface 52. The first end is connected to the CC pin of the second interface 52, and the second end of the fifth switch Q22 is connected to the VBUS pin. In this way, when the first end and the second end of the fourth switch Q23 are turned on, the CC line is connected, and when the first end and the second end of the fourth switch Q23 are disconnected, the CC line is disconnected; When the first end and the second end of the switch Q22 are turned on, the VBUS line is connected to the CC pin in the second interface 52. When the first end and the second end of the fifth switch Q22 are disconnected, the VBUS line is connected to the CC pin of the second interface 52. The CC pin in the second interface 52 is disconnected.

In addition, at the same time, one of the fourth switch Q23 and the fifth switch Q22 is connected, and the other is disconnected, so that the device to be charged 30 is connected to different power sources under different conditions.

In a specific implementation, the above-mentioned third preset time and fourth preset time can be determined according to the actual conditions of the power sources (10 and 20) and the device to be charged 30. For example, for the device to be charged with relatively high charging requirements, the third preset time can be The third preset time and the fourth preset time are set to shorter time lengths, for example: 1 second, 2 seconds, and so on.

The second switch control module 541 provided in this embodiment has the same circuit structure and working principle as the first switch control module 241 shown in FIG. 3 , and can achieve the same beneficial effects. To avoid repetition, details are not repeated here.

As an optional implementation manner, as shown in FIG. 5 , the second switch control module 541 includes a sixth switch Q21 , a fourth resistor R21 , a fifth resistor R22 and a second capacitor C21 .

Specifically, the control terminal of the sixth switch Q21 is connected to the CC pin of the first interface 51, the first terminal of the fourth resistor R21 is connected to the VBUS pin, and the fifth resistor R22 The first end of the switch Q23 is connected to the control end of the fourth switch Q23 and the control end of the fifth switch Q22; the first end of the sixth switch Q21 is connected to the second end of the fourth resistor R21 and the fifth resistor R22 The second end of the sixth switch Q21 is connected to the first end of the second capacitor C21 and the ground end, the second end of the second capacitor C21 is connected to the second end of the fifth resistor R22 The first end is connected.

It should be noted that the circuit structure and principle of the second switch control module 541 are the same as those of the first switch control module 241 shown in FIG. 4a , which are specifically limited here.

In addition, the circuit structure of the second switch control module 541 can also be improved in the same way as the first switch control module 241 shown in FIGS. 4b-4h, which will not be described one by one here.

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 (12)

1. A data line, comprising: the device comprises a first Type-A interface, a Type-C interface and a cable connected between the first Type-A interface and the Type-C interface; first Type-A interface with the Type-C interface all includes VBUS pin, CC pin, communication pin and GND pin, just first Type-A interface with VBUS pin, communication pin and GND pin one-to-one in the Type-C interface is connected its characterized in that:

a first switching circuit is arranged in the data line, a CC pin in the first Type-A interface is connected with a detection end of the first switching circuit and a first end of the first switching circuit, a second end of the first switching circuit is connected with the CC pin in the Type-C interface, and a third end of the first switching circuit is connected with a VBUS pin;

under the condition that the data line is connected with a charger, if the charger is a first charger, the first switching circuit controls a CC pin in the first Type-A interface to be communicated with a CC pin in the Type-C interface, and the CC pin in the Type-C interface is disconnected with the VBUS pin; if the charger is a second charger, the first switching circuit controls the CC pin in the first Type-A interface to be disconnected with the CC pin in the Type-C interface, and the CC pin in the Type-C interface is communicated with the VBUS pin;

under the condition that the data line is connected with the first charger, the first switching circuit acquires a first preset electric signal through the CC pin, and the first charger is a charger supporting PD charging; and under the condition that the data line is connected with the second charger, the first switching circuit does not acquire the first preset electric signal through the CC pin, and the second charger is a charger which does not support PD charging.

2. The data line of claim 1, wherein the first switching circuit comprises a first switch control module, a first switch, and a second switch, the data line further comprising a pull-up resistor;

a first input end of the first switch control module is connected with a CC pin in the first Type-a interface, a second input end of the first switch control module is connected with the VBUS pin, a third end of the first switch control module is connected with a control end of the first switch and a control end of the second switch, a first end of the first switch is connected with the CC pin in the first Type-a interface, the CC pin in the Type-C interface is connected with a second end of the first switch and a first end of the second switch, and the pull-up resistor is connected between a second end of the second switch and the VBUS pin;

when the level value of the CC pin is greater than or equal to a first preset threshold, the first switch control module controls the first switch to be switched on after first preset time and controls the second switch to be switched off after the first preset time;

and when the level value of the CC pin is smaller than the first preset threshold, the first switch control module controls the first switch to be switched off after second preset time and controls the second switch to be switched on after the second preset time.

3. The data line of claim 2, wherein the first switch control module comprises a third switch, a first resistor, a second resistor, and a first capacitor;

a control end of the third switch is connected with a CC pin in the first Type-A interface, a first end of the first resistor is connected with the VBUS pin, and a first end of the second resistor is connected with a control end of the first switch and a control end of the second switch; the second end of the third switch is connected with the second end of the first resistor and the second end of the second resistor, the third end of the third switch is connected with the first end of the first capacitor and the grounding end, and the second end of the first capacitor is connected with the first end of the second resistor.

4. The data line of claim 3, wherein the first switch, the second switch, and the third switch are transistors.

5. The data line of claim 4, wherein the first switch is an NMOS transistor, and the second switch and the third switch are PNP transistors or PMOS transistors.

6. The data line of claim 4, wherein the communication pin comprises a D + pin and a D-pin.

7. A charging device, comprising a charger and a data line connected with the charger, wherein the data line is the data line according to any one of claims 1 to 6, the charger comprises a second Type-A interface and a protocol control module, the second Type-A interface comprises a VBUS pin, a CC pin, a communication pin and a GND pin, and the VBUS pin, the CC pin, the communication pin and the GND pin in the second Type-A interface and the first Type-A interface are connected in a one-to-one correspondence manner;

the protocol control module comprises a target power supply, a first end of the protocol control module is connected with a CC pin in the charger and the target power supply, a communication pin in the charger is connected with a second end of the protocol control module, and when the charging equipment is connected with the power supply, the first switching circuit obtains the first preset electric signal through the CC pin;

under the condition that the charging equipment is connected with the equipment to be charged, if the protocol control module acquires the communication signal transmitted by the CC pin, the PD charging is carried out on the equipment to be charged; and if the protocol control module acquires the communication signal transmitted by the communication pin, carrying out non-PD charging on the equipment to be charged.

8. The charging device of claim 7, wherein in a case that the communication pin comprises a D + pin and a D-pin, the protocol control module is further configured with a communication protocol of a charging signal transmitted through the D + pin and the D-pin, and the protocol control module determines the charging parameter for the device to be charged based on the charging signal transmitted through the D + pin and the D-pin.

9. The charging apparatus of claim 7, wherein the target power source is a current source or a voltage source in series with a third resistor.

10. A charging device, comprising: first interface, second interface and connect in first interface with the cable between the second interface, its characterized in that:

the first interface and the second interface respectively comprise a VBUS pin, a CC pin and a GND pin, and the VBUS pin and the GND pin in the first interface and the second interface are connected in a one-to-one corresponding mode;

a second switching circuit is arranged in the cable, a CC pin in the first interface is connected with a detection end of the second switching circuit and a first end of the second switching circuit, a second end of the second switching circuit is connected with the CC pin in the second interface, and a third end of the second switching circuit is connected with the VBUS pin;

a VBUS pin in the first interface is used for being connected with a first power supply, a CC pin in the first interface is used for being connected with a second power supply, and the second interface is used for being connected with equipment to be charged;

when the charging device is connected with a power supply and a device to be charged, and a level value on a CC pin in the first interface is greater than or equal to a second preset threshold, the second switching circuit controls the CC pin in the first interface to be communicated with the CC pin in the second interface, and the CC pin in the second interface is disconnected with the VBUS pin; when the level value of the CC pin in the first interface is smaller than the second preset threshold, the second switching circuit controls the CC pin in the first interface to be disconnected with the CC pin in the second interface, and the CC pin in the second interface is communicated with the VBUS pin.

11. The charging device of claim 10, wherein the second switching circuit comprises a second switch control module, a fourth switch, and a fifth switch;

a first input end of the second switch control module is connected with a CC pin in the first interface, a second input end of the second switch control module is connected with a VBUS pin, a first end of the second switch control module is connected with a control end of the fourth switch and a control end of the fifth switch, the fourth switch is used for controlling the connection and disconnection of the CC pin in the first interface and the CC pin in the second interface, and the fifth switch is used for controlling the connection and disconnection of the VBUS pin and the CC pin in the second interface;

when the second switch control module obtains that the level value on the CC pin is greater than or equal to a second preset threshold, the fourth switch is controlled to be switched on after a third preset time, and the fifth switch is controlled to be switched off after the third preset time;

and the second switch control module controls the fourth switch to be switched off after fourth preset time and controls the fifth switch to be switched on after the fourth preset time when the second switch control module acquires that the level value on the CC pin is smaller than the second preset threshold.

12. The charging device of claim 11, wherein the second switch control module comprises a sixth switch, a fourth resistor, a fifth resistor, and a second capacitor;

a control end of the sixth switch is connected with a CC pin in the first interface, a first end of the fourth resistor is connected with the VBUS pin, and a first end of the fifth resistor is connected with a control end of the fourth switch and a control end of the fifth switch; the first end of the sixth switch is connected with the second end of the fourth resistor and the second end of the fifth resistor, the second end of the sixth switch is connected with the first end of the second capacitor and the grounding end, and the second end of the second capacitor is connected with the first end of the fifth resistor.

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