WO2017012180A1

WO2017012180A1 - Charging data cable and charger

Info

Publication number: WO2017012180A1
Application number: PCT/CN2015/088577
Authority: WO
Inventors: 温美婵; 周永力; 黄少葵
Original assignee: 深圳市华宝新能源股份有限公司
Priority date: 2015-07-23
Filing date: 2015-08-31
Publication date: 2017-01-26
Also published as: CN105098890A; CN105098890B

Abstract

Disclosed is a charging data cable (100), comprising an input interface (110); an input detection circuit (120) for detecting input current; a first detection control circuit (130) for detecting current on a first output channel and controlling the on/off of the first output channel; an output interface (140); a second detection control circuit (150) for detecting current on a second output channel and controlling the on/off of the second output channel; a wireless transmission circuit (160) for being connected to an electronic device and charging the electronic device in a wireless manner; and a main control circuit (170) for generating an enabling signal when the current is input, wherein the first detection control circuit (130) and the second detection control circuit (150) are conducted under the control of the enabling signal, so that the first output channel and the second output channel are controlled to be conducted and subjected to current detection respectively; and the main control circuit (170) is further used for controlling the on/off of the first output channel and the second output channel.

Description

Charging data cable and charger

[Technical Field]

The present invention relates to the field of charging control technologies, and in particular, to a charging data line, and to a charger.

【Background technique】

The charging data line is used to implement a connection between the mobile device and the computer or adapter to achieve power and data transfer between the two. The traditional charging data line has only a simple conduction capability, and its output current type is single, and the compatibility is poor, which cannot meet the charging requirements of electronic devices (such as mobile phones, tablet computers, etc.) having different current demands, and brings the user It is inconvenient.

[Summary of the Invention]

Based on this, it is necessary to provide a charging data line with better compatibility.

A charging data line for connecting to an electronic device for charging an electronic device, including:

input interface;

An input detection circuit connected to the input interface for detecting an input current;

a first detection control circuit is disposed on the first output channel of the input interface, configured to detect a current on the first output channel to generate a first current signal, and control on and off of the first output channel ;

An output interface, coupled to the first detection control circuit, for connecting to an electronic device and performing wired charging on the electronic device;

a second detection control circuit is disposed on the second output channel of the input interface, configured to detect a current on the second output channel to generate a second current signal, and control on and off of the second output channel ;

a wireless transmitting circuit coupled to the second detection control circuit for connecting to an electronic device and wirelessly charging the electronic device;

a main control circuit respectively connected to the input interface, the input detection circuit, the first detection control circuit, and the second detection control circuit; the main control circuit is configured to detect a current in the input detection circuit Inputting an enable signal to the first detection control circuit and the second detection control circuit; the first detection control circuit and the second detection control circuit are turned on under the control of the enable signal Controlling, the first output channel and the second output channel are respectively turned on and performing current detection; the main control circuit is further configured to perform, according to the input current, the first current signal, and the second current signal pair The on and off of the first output channel and the second output channel are controlled.

A charger is also provided.

A charger, including an adapter, further comprising a charging data line; the charging data line includes:

input interface;

The above charging data line and the charger can simultaneously provide two charging modes of wired charging and wireless charging, and the output is diversified to meet the requirements of electronic devices of different charging types, and the compatibility is good, and the convenience of the user's use process can be improved.

[Description of the Drawings]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain drawings of other embodiments according to the drawings without any creative work.

1 is a schematic block diagram of a charging data line in an embodiment;

2 is a schematic block diagram of a wireless transmitting circuit in the charging data line shown in FIG. 1;

3 is a schematic structural view of the charging data line of FIG. 1.

【detailed description】

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the understanding of the present disclosure will be more fully understood.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

A charging data line in an embodiment is for connecting to an electronic device to charge an electronic device. The electronic device may include a mobile phone, a tablet, a digital camera, a music player, and the like. The electronic device may be a wired charging device, a wireless charging device, or a device having both wired and wireless charging functions. 1 is a schematic block diagram of a charging data line 100 in an embodiment. In the present embodiment, the charging data line 100 includes an input interface 110, an input detecting circuit 120, a first detecting control circuit 130, an output interface 140, a second detecting control circuit 150, a wireless transmitting circuit 160, and a main control circuit 170.

The input interface 110 is for connection to an adapter or a power supply device such as a main device including a computer, which can supply an input current to the input interface 110. Input interface 110 can be a USB interface or other type of interface known in the art to be used in conjunction with an adapter.

The input detection circuit 120 is coupled to the input interface 110 for detecting an input current on the input interface 120 to identify an output current capability of the connected power supply device. Specifically, the input detection circuit 120 is connected to the first pin (voltage output pin), the second pin (D- pin), and the third pin (D+ pin) of the input interface 120, respectively. The input detection circuit 120 detects the output voltage, the D+ signal, and the D-signal of the input interface 110, thereby implementing detection and identification of the voltage, current, and the connected power supply device of the input interface 110. If the standard USB is connected to the input interface 110, the input detection circuit 120 automatically detects the USB type and detects the output current capability (100 mA, 500 mA, 900 mA, 1.5 A, 2A to 3 A, etc.).

The first detection control circuit 130 is disposed on the first output channel of the input interface 110 and is connected between the input interface 110 and the output interface 140. The first detection control circuit 130 is configured to detect a current on the first output channel to generate a first current signal. The first detection control circuit 130 is further configured to control on/off of the first output channel to control whether the output interface 140 outputs current to the connected electronic device. Specifically, the first detection control circuit 130 includes a first detecting unit 132 and a first switching unit 134. The first detecting unit 132 is configured to detect a current on the first output channel. The first switching unit 134 is configured to control the on and off of the first output channel. The first detecting unit 132 includes a first operational amplifier OPA1, and the first switching unit 134 includes a first PMOS transistor Q1. The non-inverting input of the first operational amplifier OPA1 is connected to the source of the first PMOS transistor Q1 and to the first pin of the input interface 110. The inverting input terminal of the first operational amplifier OPA1 is connected to the drain of the first PMOS transistor Q1 and then connected to the output interface 140. An output of the first operational amplifier OPA1 is coupled to the main control circuit 170 as a first current signal output. The gate of the first PMOS transistor Q1 is connected to the main control circuit 170 for receiving the enable signal EN outputted by the main control circuit 170, and is turned on under the control of the enable signal EN, thereby turning on the first output channel.

The output interface 140 is connected to the first detection control circuit 130 and is used to connect with an external electronic device. The output interface 140 can perform wired charging of the accessed external electronic device. In this embodiment, the output interface 140 is a USB interface, and the USB interface may be a USB-A type interface, a USB-C type interface, or a USB-C type interface.

The second detection control circuit 150 is disposed on the second output channel of the input interface 110 and is connected between the input interface 110 and the wireless transmission circuit 160. The second detection control circuit 150 is configured to detect a current on the second output channel and generate a second current signal. The second detection control circuit 150 is further configured to control the on and off of the second output channel to control whether the wireless transmission circuit 160 outputs current to the accessed electronic device. Specifically, the second detection control circuit 150 includes a second detection unit 152 and a second switching unit 154. The second detecting unit 152 is configured to detect the current on the second output channel. The second switching unit 154 is configured to control the on and off of the second output channel, wherein the second detecting unit 152 includes a second operational amplifier OPA2, and the second switching unit 154 includes a second PMOS transistor Q2. The non-inverting input terminal of the second operational amplifier OPA2 is connected to the source of the second PMOS transistor Q2 and is connected to the first pin of the input interface 110. The inverting input terminal of the second operational amplifier OPA2 is connected to the drain of the second PMOS transistor Q2 and is connected to the output interface 160. The output of the second operational amplifier OPA2 is coupled to the main control circuit 170 as a second current signal output. The gate of the second PMOS transistor Q2 is connected to the main control circuit 170 for receiving the enable signal EN outputted by the main control circuit 170, and is turned on under the control of the enable signal EN, thereby turning on the first output channel.

The wireless transmitting circuit 160 is connected to the second detecting control circuit 150 and is used for wireless connection with an external electronic device to wirelessly charge the accessed electronic device. A block diagram of the wireless transmitting circuit 160 is shown in FIG. 2. The wireless transmitting circuit 160 includes a voltage stabilizing circuit 1602, a wireless power control circuit 1604, a driving circuit 1606, a wireless transmitting coil 1608, and an indicating circuit 1610. The voltage stabilizing circuit 1602 is respectively connected to the input terminal VIN of the second detecting control circuit 150 for receiving an input voltage of 5V. The voltage stabilizing circuit 1602 is also coupled to the wireless power control circuit 1604. The voltage regulator circuit 1602 is a low dropout linear regulator circuit (Low) The Dropout Linear Regulator (LDO) can provide a stable supply voltage to the wireless power control circuit 1604. The driving circuit 1606 includes two half bridge driving circuits (1/2) Bridge Driver). The half bridge drive circuit is coupled to the output of the second detection unit 152 of the second detection control circuit 150 and to the wireless transmit coil 1608. The wireless transmit coil 1608 is also in communication with the wireless power control circuit 1604. Therefore, the wireless power control circuit 1604 can generate a corresponding pulse width modulation signal (PWM) according to the state of charge of the electronic device connected to the wireless transmitting coil 1608 to control the operation of the driving circuit 1606, thereby realizing the transmitting power to the wireless transmitting coil 1608. Dynamic adjustment. Moreover, the wireless power control circuit 1604 detects whether the accessed electronic device is full, and controls the wireless transmitting circuit 160 to automatically enter the power saving mode after being fully charged to save energy. The indicating circuit 1610 is then used to indicate the operating state of the wireless transmitting circuit 160. In the present embodiment, the indicating circuit 1610 includes an LED that indicates the operating state of the wireless transmitting circuit 160 by the blinking state of the LED.

Referring to FIG. 1, the main control circuit 170 is connected to the input interface 110, the input detection circuit 120, the first detection control circuit 130, and the second detection control circuit 150, respectively. The main control circuit 170 is configured to generate an enable signal EN to the first detection control circuit 130 and the second detection control circuit 150 when the input detection circuit 120 detects the input interface 110 and the current input (ie, has an external device access). The first switch unit 134 of the first detection control circuit 130 is turned on under the control of the enable signal EN, thereby controlling the first output channel to be turned on, and then supplying power to the output interface 140 to identify whether the output interface 140 is connected. Electronic equipment. The second switching unit 154 in the second detection control circuit 150 is turned on under the control of the enable signal EN, thereby controlling the second output channel to be turned on, and then supplying power to the wireless transmitting circuit 160 to identify whether the wireless transmitting circuit 160 has Electronic equipment access. The main control circuit 170 is further configured to perform corresponding control on the first detection control circuit 130 and the second detection control circuit 150 according to the input current of the input interface 110, the first current signal, and the second current signal, thereby The on and off of the second output channel is controlled to enable charging of the access electronic device. Specifically, the main control circuit 170 determines whether the electronic device is connected to the output interface 140 and the wireless transmitting circuit 160 according to the first current signal and the second current signal, and turns off the output channel without the electronic device access. For example, when it is determined that the electronic device is not connected to the output interface 140, the main control circuit 170 controls the first switching unit 134 of the first detection control circuit 130 to be turned off, thereby turning off the first output channel and stopping supplying power to the output interface 140. Only the wireless transmitting circuit 160 is powered. When the main control circuit 170 determines that both the output interface 140 and the wireless transmitting circuit 160 are connected to the electronic device, the main control circuit 170 determines whether the input current satisfies the charging current demand of the output interface 140 and the electronic device to which the wireless transmitting circuit 160 is connected. The main control circuit 170 allocates the input current according to the preset priority when the input current cannot satisfy the charging current demand of the output interface 140 and the electronic device accessed by the wireless transmitting circuit 160. In this embodiment, when the output interface 140 and the wireless transmitting circuit 160 are both connected to the electronic device, the output interface 140 is preferentially powered. The main control circuit 170 allows the wireless transmitting circuit 160 to output to the external device only when there is a residual load capacity greater than or equal to 1 A, to supply power to the electronic device to achieve reasonable distribution of the input current.

In this embodiment, the main control circuit 170 further determines whether there is an overcurrent or a full state on the corresponding output channel according to the first current signal and the second current signal. The main control circuit 170 turns off the corresponding output channel when overcurrent or full, thereby protecting the charging process or implementing an automatic full power-off function to prevent overcharging. The main control circuit 170 also detects the voltage on each output channel to determine whether there is a short circuit or a low load voltage on each output channel. The main control circuit 170 turns off the corresponding output channel when a short circuit occurs or the load voltage is too low to achieve charging protection.

The charging data line 100 has two output ports, which can simultaneously charge two devices to meet the charging requirements of multiple users. Moreover, it can provide both wired charging and wireless charging, so it can meet the charging requirements of electronic devices of different charging types, and the compatibility is good.

Referring to FIG. 1, the above charging data line 100 further includes a device type detecting circuit 180 and a device charging setting circuit 190. The device type detecting circuit 180 is connected to the output interface 140 and the main control circuit 170, respectively. The device type detecting circuit 190 is configured to detect and output the charging current value required by the electronic device of the access output interface 140 to the main control circuit 170. Specifically, the device type detecting circuit 180 is connected to the first pin (Vbus), the second pin (D-), and the third pin (D+) of the output interface 140, respectively. The device type detecting circuit 180 detects the D+ signal and the D-signal of the output interface 140 and outputs it to the main control circuit 170. The main control circuit 170 generates a current adjustment signal to the device charging setting circuit 190 based on the detected demand charging current value. The device charging setting circuit 190 adjusts the D+ signal and the D-signal of the output interface under the control of the current adjustment signal, so that the accessed electronic device can absorb the appropriate current (specified by the electronic device manufacturer) to obtain the best. Charging current and charging speed.

FIG. 3 is a schematic structural view of the charging data line 100 shown in FIG. 1. In the present embodiment, the charging data line 100 further includes a connection line 192. The input end of the connection line 192 is connected to the input interface 110, the first output end is connected to the output interface 140, and the second output end is used as the wireless transmitting end 194. In this embodiment, the wireless transmitting end 194 forms a wireless charging transmitter for placing an electronic device for wireless charging. Specifically, the input detection circuit 120, the first detection control circuit 130, the second detection control circuit 150, and the main control circuit 170 are all disposed at the input end of the connection line 192, and the wireless transmission circuit 160 is disposed at the second output end of the connection line. . The device type detecting circuit 180 and the device charging setting circuit 190 are disposed at the first output end of the connection line 192.

The present invention also provides a charger including an adapter, further comprising a charging data line in any of the foregoing embodiments.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A charging data line for connecting to an electronic device for charging an electronic device, wherein the charging data line comprises:

input interface;

An input detection circuit connected to the input interface for detecting an input current;

a first detection control circuit is disposed on the first output channel of the input interface, configured to detect a current on the first output channel to generate a first current signal, and control on and off of the first output channel ;

An output interface, coupled to the first detection control circuit, for connecting to an electronic device and performing wired charging on the electronic device;

a second detection control circuit is disposed on the second output channel of the input interface, configured to detect a current on the second output channel to generate a second current signal, and control on and off of the second output channel ;

a wireless transmitting circuit coupled to the second detection control circuit for connecting to an electronic device and wirelessly charging the electronic device;

a main control circuit respectively connected to the input interface, the input detection circuit, the first detection control circuit, and the second detection control circuit; the main control circuit is configured to detect a current in the input detection circuit Inputting an enable signal to the first detection control circuit and the second detection control circuit; the first detection control circuit and the second detection control circuit are turned on under the control of the enable signal Controlling, the first output channel and the second output channel are respectively turned on and performing current detection; the main control circuit is further configured to perform, according to the input current, the first current signal, and the second current signal pair The on and off of the first output channel and the second output channel are controlled.
The charging data line of claim 1 wherein said input interface is for connection to an adapter or a host device.
The charging data line according to claim 1, wherein the main control circuit is configured to determine, according to the first current signal and the second current signal, whether the output interface and the wireless transmitting circuit have an electronic device access, Thereby turning off the output channel of the electronic device that is not connected.
The charging data line according to claim 3, wherein the main control circuit is further configured to: determine, when the output interface and the wireless transmitting circuit have electronic devices connected, determine whether the input current is And satisfying a charging current requirement of the output interface and the electronic device accessed by the wireless transmitting circuit; the main control circuit is further configured to: when the input current cannot simultaneously satisfy the output interface and the wireless transmitting circuit accessing When the charging current demand of the electronic device is required, the input current is allocated according to a preset priority.
The charging data line of claim 1 further comprising:

a device type detecting circuit respectively connected to the output interface and the main control circuit, configured to detect a charging current value required by an electronic device connected to the output interface, and output the value to the main control circuit; a control circuit for generating a current adjustment signal based on the charging current value;

And a device charging setting circuit, which is respectively connected to the output interface and the main control circuit, and is configured to adjust a current output to the output interface under the control of the current adjustment signal.
The charging data line according to claim 1, wherein the main control circuit is further configured to determine, according to the first current signal and the second current signal, whether an output channel is overcurrent or full. And turn off the corresponding output channel when overcurrent or full occurs.
The charging data line according to claim 1, wherein the main control circuit is further configured to detect voltages on the first output channel and the second output channel, and determine whether a corresponding output channel is There is a short circuit or a state in which the load voltage is too low; the main control circuit is further configured to turn off the corresponding output channel when it is determined that there is a short circuit on the output channel or the load voltage is too low.
The charging data line according to claim 1, wherein said wireless transmitting circuit comprises a voltage stabilizing circuit, a wireless power control circuit, a driving circuit, and a wireless transmitting coil; said voltage stabilizing circuit and said second detecting control respectively a circuit, the wireless power control circuit is connected; the wireless power control circuit is respectively connected to the driving circuit and the wireless transmitting coil; the driving circuit is further connected to the wireless transmitting coil; and the wireless power control circuit is used And generating a pulse width modulation signal according to a charging state of the electronic device accessing the wireless transmitting coil to control the driving circuit to implement adjustment of a transmission power of the wireless transmitting coil.
The charging data line according to claim 1, further comprising a connecting line; the input end of the connecting line is connected to the input interface; and the first output end of the connecting line is connected to the output interface; a second output end of the connection line serves as a wireless transmitting end; the input detection circuit, the first detection control circuit, the second detection control circuit, and the main control circuit are disposed at an input of the connection line The wireless transmitting circuit is disposed at a wireless transmitting end of the connecting line.
A charger includes an adapter and a charging data line connected to the adapter; wherein the charging data line comprises:

input interface;

An input detection circuit connected to the input interface for detecting an input current;

a first detection control circuit is disposed on the first output channel of the input interface, configured to detect a current on the first output channel to generate a first current signal, and control on and off of the first output channel ;

An output interface, coupled to the first detection control circuit, for connecting to an electronic device and performing wired charging on the electronic device;

a second detection control circuit is disposed on the second output channel of the input interface, configured to detect a current on the second output channel to generate a second current signal, and control on and off of the second output channel ;

a wireless transmitting circuit coupled to the second detection control circuit for connecting to an electronic device and wirelessly charging the electronic device;

a main control circuit respectively connected to the input interface, the input detection circuit, the first detection control circuit, and the second detection control circuit; the main control circuit is configured to detect a current in the input detection circuit Inputting an enable signal to the first detection control circuit and the second detection control circuit; the first detection control circuit and the second detection control circuit are turned on under the control of the enable signal Controlling, the first output channel and the second output channel are respectively turned on and performing current detection; the main control circuit is further configured to perform, according to the input current, the first current signal, and the second current signal pair The on and off of the first output channel and the second output channel are controlled.
The charger of claim 10 wherein said input interface is for connection to an adapter or a host device.
The charger according to claim 10, wherein the main control circuit is configured to determine, according to the first current signal and the second current signal, whether the output interface and the wireless transmitting circuit have an electronic device access, thereby Turn off the output channel that is not connected to the electronic device.
The charger according to claim 12, wherein the main control circuit is further configured to determine whether the input current is satisfied when it is determined that the output interface and the wireless transmitting circuit have electronic devices connected The output interface and a charging current requirement of an electronic device accessed by the wireless transmitting circuit; the main control circuit is further configured to: when the input current cannot simultaneously satisfy the output interface and the electronic device that is accessed by the wireless transmitting circuit When the charging current demand of the device is required, the input current is allocated according to a preset priority.
The charger according to claim 10, further comprising:

a device type detecting circuit respectively connected to the output interface and the main control circuit, configured to detect a charging current value required by an electronic device connected to the output interface, and output the value to the main control circuit; a control circuit for generating a current adjustment signal based on the charging current value;

And a device charging setting circuit, which is respectively connected to the output interface and the main control circuit, and is configured to adjust a current output to the output interface under the control of the current adjustment signal.
The charger according to claim 10, wherein the main control circuit is further configured to determine, according to the first current signal and the second current signal, whether a corresponding output channel has an overcurrent or a full state. And turn off the corresponding output channel when overcurrent or full.
The charger according to claim 10, wherein the main control circuit is further configured to detect voltages on the first output channel and the second output channel, and determine whether a corresponding output channel exists The short circuit or the state in which the load voltage is too low; the main control circuit is further configured to turn off the corresponding output channel when it is determined that there is a short circuit on the output channel or the load voltage is too low.
The charger according to claim 10, wherein said wireless transmitting circuit comprises a voltage stabilizing circuit, a wireless power control circuit, a driving circuit, and a wireless transmitting coil; said voltage stabilizing circuit and said second detecting control circuit, respectively The wireless power control circuit is connected; the wireless power control circuit is respectively connected to the driving circuit and the wireless transmitting coil; the driving circuit is further connected to the wireless transmitting coil; and the wireless power control circuit is used for A pulse width modulation signal is generated according to a state of charge of the electronic device that accesses the wireless transmitting coil to control the driving circuit to implement adjustment of a transmission power of the wireless transmitting coil.
The charger according to claim 10, further comprising a connection line; the input end of the connection line is connected to the input interface; the first output end of the connection line is connected to the output interface; The second output end of the connecting line is used as a wireless transmitting end; the input detecting circuit, the first detecting control circuit, the second detecting control circuit and the main control circuit are disposed at an input end of the connecting line The wireless transmitting circuit is disposed at a wireless transmitting end of the connecting line.