CN209994149U - A charger with Type-C interface - Google Patents

Abstract

The utility model provides a charger with Type-C interface, inserts vary voltage part (1) and interface conversion part (2) including the wall, and this wall inserts vary voltage part (1) and can independent use or make up the use after being connected with this interface conversion part, has compatible Type-C interface, Type A interface or Type B interface, need carry out identification before charging to mobile terminal. The wall plug-in transformation part (1) can be used independently or combined with the interface conversion part after being connected, so that the charger is flexible and convenient and can be used in multiple modes; because the Type-C interface of the charger conforms to the USB3.1 standard and the USB PD protocol, the charger can quickly charge the charging equipment according to the highest voltage, the maximum current value and the pulse width which can be accepted by the mobile terminal and the Type of the mobile terminal, and has high data transmission speed; due to the fact that the mobile terminal charging device has the identity recognition protocol and is recognized by the aid of the voltage and the secret key loaded on the two middle lines (D + D-), the mobile terminal can be charged safely by the charger, the mobile terminal is charged quickly when recognition is successful, the mobile terminal is charged normally when recognition is unsuccessful, the mobile terminal can be charged, and the mobile terminal is prevented from being damaged by too high voltage and current.

Description

A charger with Type-C interface

technical field

The invention relates to a charger, in particular to a charger with a Type-C interface.

Background technique

With more and more functions of mobile terminals, they are used more and more frequently in daily life, and the power consumption is very large. The battery capacity is limited. R&D focus. Generally speaking, the charging power exceeds 10W to be called fast charging. For feature phones, the power consumption of mobile phones is not very large, and the 5V0.5A of USB can meet the demand; when smart phones appear, due to the large demand for performance, the power consumption increases, and 0.5A can no longer meet the needs; so the definition An enhanced USB charging recognition standard: BC 1.2, extending the charging current to 5V 1.5A. However, for smartphones above 3000 mAh, even 5V 1.5A cannot meet the demand at this time, so the charging current is extended to 5V 2A again, which is Qualcomm's QC 1.0 technology.

However, the charging current cannot be extended indefinitely. When it reaches 5V 2A, the current increase will inevitably cause the interface and data line to be unbearable. Generally speaking, only safe and efficient transmission can be guaranteed under the current of 2A, and the maximum can be 3A in extreme cases. In order to increase the charging power when the load remains unchanged, the voltage from the charger to the USB interface is increased instead. Qualcomm QC2.0 has designed two solutions - class A and class B. The class A used in mobile phones can provide output voltages of 5V, 9V and 12V. In fact, basically only 9V is used. The voltage of the B-type solution used by the tablet or notebook will support four voltages of 5V, 9V, 12V, and 20V, and the power can reach 60W. Further, Qualcomm QC3.0 is in 200mV increments, so that the voltage can be flexibly selected from 3.6V to 20V.

In addition, for the current fast charging technology, major manufacturers have their own identification protocols, but not without a unified identification protocol. The USB promotion team formulated the USB PD charging protocol as early as July 2012, the full name of which is "USB PowerDelivery Specification" ". USB PD sets five-level specifications of 10W, 18W, 36W, 60W, and 100W according to the power that can be supplied. PD technology not only has powerful charging power, but also can realize two-way charging.

As mentioned earlier, increasing the current will inevitably cause the interface and data line to be unbearable. Since the number of contacts of the Type-C interface is several times that of the Type A interface, this greatly increases the current intensity it can withstand. -C charge current loss is also smaller. However, most mobile terminals currently on the market still use the USB 2.0 standard as the mainstream, and Type-C cannot be compatible with existing Type A devices.

SUMMARY OF THE INVENTION

In order to make the charger charge faster, transmit data faster, and be compatible with the Type-C interface, Type A interface or Type B interface, to ensure the safety and reliability of the mobile terminal when charging.

An embodiment of the present invention provides a charger with a Type-C interface, which is characterized by comprising: a wall plug transformer part and an interface conversion part, and the wall plug transformer part can be used independently or in phase with the interface conversion part. Combined use after connection;

The wall-plug transformer part includes a rectifier, a PWM controller, a transformer, a main controller, and a female first interface; the main controller is connected to the rectifier, the PWM controller, the transformer and the first interface respectively. The female head is connected to carry out logic control; according to the logic control instruction of the main controller, the rectifier rectifies the AC mains into a high-voltage DC voltage, and the pulse width range of the output of the PWM controller; according to the output of the PWM controller The high-voltage DC voltage is stepped down by the transformer into a low-voltage DC voltage, and the low-voltage DC voltage is output through the female connector of the first interface;

The interface conversion part includes a first interface male head, an interface conversion module, a second interface and at least one third interface; the second interface or the third interface is connected to the first interface male head through the interface conversion module. connect;

The first interface female header and the first interface male header are both Type-C interfaces; the second interface is connected in parallel with the third interface, and both the second interface and the third interface are Type-C interfaces , Type A interface or Type B interface and at least one of them is a Type A interface.

Preferably, the Type-C interface conforms to the USB3.1 standard and the USB PD protocol.

Preferably, the wall-plug transformer part and the interface conversion part are connected by the first interface female connector and the first interface male connector, or the wall-plug transformer part can be attracted to each other by magnets. The connection with the interface conversion part is firmer, and the magnet is placed in the wall plug transformer part and the interface conversion part.

Preferably, the wall-plug transformer part further includes a first identification module, and the first identification module is used for identification with the mobile terminal or the interface conversion part. After the identification is successful, the charger will Mobile terminal charging;

The interface conversion part also includes a second identification module, the second identification module is used for identification with the wall plug transformer part and the mobile terminal. After the identification is successful, the charger passes the first identification. The second interface or the third interface charges the mobile terminal.

Preferably, the protocol used for identification conforms to QC3.0, and is identified by loading voltage and key on the middle two wires (D+D-). When the identification is successful, the mobile terminal is quickly charged, and when the identification is unsuccessful, the mobile terminal is quickly charged. The mobile terminal is generally charged.

Preferably, the wall plug transformer part further includes a main circuit switch connected between the first interface female header and the transformer, and the controller controls the on or off of the main circuit switch to decide whether to fast charge the mobile terminal.

Preferably, the wall plug transformer part further includes a first filter connected before the rectifier to filter the input AC mains, and a second filter connected after the rectifier to filter the rectified high-voltage DC voltage. filter.

Preferably, the wall-plug transformer part further includes a synchronous rectification controller, which is connected to the transformer and performs synchronous rectification on the low-voltage DC voltage stepped down by the transformer.

Preferably, the wall plug transformer part further includes a photoelectric sensor, and the main controller sets the pulse width of the PWM controller by controlling the conduction strength of the regulating photoelectric sensor, so that the PWM The pulse width output by the controller is stable in the range matching with the mobile terminal.

Preferably, the wall-plug transformer part further includes a voltage feedback module, and the main controller performs feedback regulation on the low-voltage DC voltage output by the transformer through the voltage feedback module.

According to the charger with the Type-C interface of the above-mentioned embodiment, since the wall-plug transformer part can be used independently or in combination with the interface conversion part, the charger is flexible and convenient, and can be used in multiple modes. When used in combination, it is compatible with Type-C interface, Type A interface or Type B interface; since the Type-C interface of the charger conforms to the USB3.1 standard and the USB PD protocol, the charger can be used according to mobile The highest voltage, maximum current value and pulse width that the terminal can accept and the type of mobile terminal can quickly charge the charging device and have fast data transmission speed; due to the identification protocol, and through the middle two lines (D+D-) Loading voltage and key to identify, make the charger can charge the mobile terminal more safely, quickly charge the mobile terminal when the identification is successful, and generally charge the mobile terminal when the identification is unsuccessful, which not only allows the mobile terminal to be charged but also guarantees the mobile terminal Avoid being damaged by excessive voltage and current.

Description of drawings

1 is a schematic structural diagram of a charger with a Type-C interface provided by an embodiment of the present invention;

2 is a schematic structural diagram of a joint part of a wall-plug transformer part and an interface conversion part of a charger with a Type-C interface provided by an embodiment of the present invention;

3 is an exploded view of an interface conversion part of a charger with a Type-C interface provided by an embodiment of the present invention;

4 is a structural block diagram of a wall plug transformer part of a charger with a Type-C interface provided by an embodiment of the present invention;

FIG. 5 is a structural block diagram of an interface conversion part of a charger with a Type-C interface provided by an embodiment of the present invention.

Detailed ways

Referring to FIG. 1 , an embodiment of the present invention provides a charger with a Type-C interface, including a wall-plug transformer part 1 and an interface conversion part 2 . The charger has two charging modes, one is that the wall-plug transformer part 1 is used alone to charge the mobile terminal, and the other is that the wall-plug transformer part 1 and the interface conversion part 2 are used together. connected, the two parts are combined for charging the mobile terminal.

As shown in FIG. 1 and FIG. 2 , by connecting the first interface female head 11 with the first interface male head 21, the wall plug transformer part 1 is connected with the interface conversion part 2; The first magnet 141, the second magnet 142, the third magnet 241, and the fourth magnet 242 are attracted to each other, so that the wall plug transformer part 1 and the interface conversion part 2 are connected more firmly. The first magnet 141 And the second magnet 142 is placed in the wall plug transformer part 1 , and the third magnet 241 and the fourth magnet 242 are placed in the interface conversion part 2 .

The first interface female head 11 and the first interface male head 21 are both Type-C interfaces.

FIG. 3 is an exploded view of the interface conversion part of a charger with a Type-C interface. The interface conversion part 2 further includes a second interface 22 and at least one third interface 23. The third interface is connected to the second interface. The interfaces are connected in parallel, and the two are Type-C interfaces, Type A interfaces, or Type B interfaces, and at least one of them is a Type A interface.

The above Type-C interface conforms to the USB3.1 standard and the USB PD (Power Delivery) protocol. Since the Type-C interface conforms to the USB3.1 standard, the USB3.1 standard supports the power supply standard of USB PD, so that the maximum power supply can reach 100W, and the charging speed is greatly improved; at the same time, the data transmission speed of the Type-C interface conforming to the USB3.1 standard is It can reach 10Gps, while the traditional USB3.0 can only reach 5Gps, and the USB2.0 can only reach 400Mps. Therefore, the Type-C interface can not only achieve fast charging but also faster data transmission.

In addition, the wall-plug transformer part 1 further includes a fourth interface 15 for receiving AC mains power.

As shown in FIG. 4, it is a structural block diagram of a wall plug transformer part of a charger with a Type-C interface provided by an embodiment of the present invention. The wall plug transformer part 1 includes a rectifier 16, a PWM controller 18, a transformer 10. The main controller 17 , the first female interface connector 11 and the first identification module 19 .

When the wall-plug transformer part 1 and the interface conversion part 2 are combined for charging the mobile terminal, the first identification module 19 is used for identification with the interface conversion part 2 .

When the wall-plug transformer part 1 is used alone, the first identification module 19 is used for identification with the mobile terminal. When the mobile terminal is connected to the wall-plug transformer part 1 through the first interface female connector 11 , the main controller 17 uses the power supply IC of USB PD (ie, the pulse width control integration of the power supply) to obtain the mobile terminal from the first interface female connector 11 . The parameter information of the terminal determines the highest voltage (greater than 5V) that the mobile terminal can accept, the maximum current value and pulse width, and the type of the mobile terminal. If the identification is successful, the main controller 17 performs logical control, so that the transformer 10 outputs the highest voltage that the mobile terminal can accept, and charges the mobile terminal quickly through the first interface female 11; if the identification is unsuccessful, the main The controller 17 issues a logic control command, so that the transformer 10 outputs a voltage of 5V (2A), and the mobile terminal is normally charged at 5V2A through the first interface female connector 11 . The identification protocol conforms to the QC3.0 protocol, and is identified by loading voltage and key on the middle two wires (D+D-).

The main controller 17 is respectively connected with the rectifier 16 , the PWM controller 18 , the transformer 10 and the first interface female head 11 for logic control. According to the logic control command output by the main controller 17, the rectifier 16 rectifies the AC mains into a high-voltage DC voltage. Preferably, a first filter 101 is connected in front of the rectifier 16 to filter the input AC mains to filter out high frequency harmonics, distortion and noise of the AC voltage; The rectified high-voltage DC voltage is filtered to filter out high-frequency harmonics, distortion and noise of the high-voltage DC voltage, so that the high-voltage DC voltage output by the rectifier 16 has no harmonics, no noise, and better quality.

The wall plug transformer part 1 also includes a photoelectric sensor 112, and the main controller 17 sets the pulse width of the PWM controller 18 by controlling the conduction strength of the regulating photoelectric sensor 112, so that all The pulse width output by the PWM controller 18 is stable in a range matching with the mobile terminal. According to the pulse width range output by the PWM controller 18, the transformer 10 steps down the high-voltage DC voltage to a low-voltage DC voltage to realize DC/DC conversion.

Preferably, the synchronous rectification controller 103 will also be used to synchronously rectify the low-voltage DC voltage after being stepped down by the transformer 10, that is, a dedicated power MOSFET with extremely low on-state resistance is used to reduce rectification loss and greatly improve the DC/DC/DC voltage of the transformer. For DC conversion efficiency, the synchronous rectification controller 103 is connected to the transformer 10 .

The wall-plug transformer part 1 further includes a voltage feedback module 113, and the main controller 17 performs feedback adjustment on the low-voltage DC voltage output by the transformer 10 through the voltage feedback module 113 to correct the low-voltage DC voltage output by the transformer 10. Voltage value.

The low-voltage DC voltage is output through the first interface female header 11, which can realize the charging of the mobile terminal. Preferably, the wall-plug transformer part 1 further includes a main circuit switch 114 connected between the first interface female head 11 and the transformer 10, and the main controller 17 controls the main circuit switch 114 is turned on or off to decide whether to charge the mobile terminal. When the charger detects overcurrent (ie exceeding the maximum current) or overvoltage (ie exceeding the maximum voltage) during charging, the main controller 17 will turn off the main loop switch 114 according to the power IC of the USB PD technology , immediately stop charging the mobile terminal, protect the charger and the mobile terminal, and resume charging the mobile terminal when the current or voltage returns to normal.

As shown in FIG. 5 is a structural block diagram of an interface conversion part of a charger with a Type-C interface provided in this embodiment, the interface conversion part 2 includes a first interface male head 21, an interface conversion module 28, a second identity Identify the module 29 , the second interface 22 and the third interface 23 .

The second interface 22 or the third interface 23 is connected to the first interface male head 21 through an interface conversion module 28 . When the first interface male 21 is docked with the first interface female 11, the wall plug transformer part 1 and the interface conversion part 2 are connected, and the wall plug transformer part 1 and the The interface converting section 2 is combined for charging the mobile terminal.

The second interface 22 and the third interface 23 are connected in parallel, and both are a Type-C interface, a Type A interface or a TypeB interface, and at least one of them is a Type A interface.

When the wall plug transformer part 1 and the interface conversion part 2 are combined for charging the mobile terminal, the mobile terminal is connected to the interface conversion part 2 through the second interface 22 or the third interface 23 . The second identification module 29 first performs identification with the first identification module 19 of the wall-plug transformer part 1. If the identification is successful, the main controller 17 uses the power supply IC of USB PD technology from the second identification module. The interface 22 or the third interface 23 obtains parameter information of the mobile terminal, and determines the highest voltage (greater than 5V), the maximum current value and pulse width that the mobile terminal can accept, and the type of the mobile terminal. After that, the second identification module 29 performs identification protocol identification with the mobile terminal. If the identification is successful again, the main controller 17 performs logic control so that the transformer 10 outputs the highest voltage that the mobile terminal can accept. The second interface 22 or the third interface 23 quickly charges the mobile terminal; if the identity recognition fails once, the main controller 17 performs logic control, so that the transformer 10 outputs a voltage of 5V (2A), and the second interface 22 Or the third interface 23 performs 5V2A normal charging to the mobile terminal. The identification protocol conforms to the QC3.0 protocol, and is identified by loading voltage and key on the middle two wires (D+D-).

To sum up, because the wall-plug transformer part can be used independently or in combination with the interface conversion part, the charger of the present application is flexible and convenient, and can be used in multiple modes. It is compatible with Type-C interface, Type A interface or Type B interface; since the Type-C interface of the charger conforms to the USB3.1 standard and USB PD protocol, the charger can be based on the highest acceptable level of the mobile terminal. The voltage, maximum current value and pulse width as well as the type of mobile terminal can quickly charge the charging device, and its charging power can reach up to 100W, and at the same time make the charger have a fast data transmission speed, and its data transmission speed can reach 10Gps; Identification protocol, and identification by loading voltage and key on the middle two wires (D+D-), so that the charger can charge the mobile terminal more safely, fast charging the mobile terminal when the identification is successful, and charging the mobile terminal when the identification is unsuccessful. The ordinary charging of the terminal not only allows the mobile terminal to obtain charging, but also protects the mobile terminal from being damaged by excessive voltage and current.

The specific preferred embodiments are used to describe the present invention above, which are only used to help the understanding of the present invention, and are not intended to limit the present invention. For those skilled in the art, according to the idea of the present invention, the above-mentioned specific embodiments can be changed.

Claims (10)

1. a charger with Type-C interface is characterized in that, comprising: a wall plug transformer part and an interface conversion part, the wall plug transformer part can be used independently or combined after being connected with the interface conversion part use; The wall-plug transformer part includes a rectifier, a PWM controller, a transformer, a main controller, and a female first interface; the main controller is connected to the rectifier, the PWM controller, the transformer and the first interface respectively. The female head is connected to carry out logic control; according to the logic control instruction of the main controller, the rectifier rectifies the AC mains into a high-voltage DC voltage, and the pulse width range of the output of the PWM controller; according to the output of the PWM controller The high-voltage DC voltage is stepped down by the transformer into a low-voltage DC voltage, and the low-voltage DC voltage is output through the female connector of the first interface; The interface conversion part includes a first interface male head, an interface conversion module, a second interface and at least one third interface; the second interface or the third interface is connected to the first interface male head through the interface conversion module. connect; The first interface female header and the first interface male header are both Type-C interfaces; the second interface is connected in parallel with the third interface, and the second interface and the third interface are Type-C interfaces or Type A interfaces and at least one of them is a Type A interface. 2 . The charger of claim 1 , wherein the Type-C interface conforms to the USB 3.1 standard and the USB PD protocol. 3 . 3. The charger according to claim 1, wherein the wall plug transformer part and the interface conversion part are connected by the first interface female connector and the first interface male connector, or Then, the magnets are attracted to each other to make the connection between the wall plug transformer part and the interface conversion part more firmly, and the magnets are placed in the wall plug transformer part and the interface conversion part. 4. The charger of claim 1, wherein The wall-plug transformer part further includes a first identification module, and the first identification module is used for identification with the mobile terminal or the interface conversion part. After the identification is successful, the charger charges the mobile terminal. ; The interface conversion part also includes a second identification module, the second identification module is used for identification with the wall plug transformer part and the mobile terminal. After the identification is successful, the charger passes the first identification. The second interface or the third interface charges the mobile terminal. 5. The charger according to claim 4, characterized in that, the protocol used for identification conforms to QC3.0, and is identified by loading a voltage and a key on the middle two wires (D+D-), and the identification is successful The mobile terminal is charged quickly when the identification is unsuccessful, and the mobile terminal is charged normally when the identification is unsuccessful. 6. The charger according to any one of claims 1 to 5, wherein the wall plug transformer part further comprises a main circuit switch connected between the first interface female header and the transformer, so that The controller controls the on or off of the main loop switch to decide whether to charge the mobile terminal. 7. The charger according to any one of claims 1 to 5, wherein the wall-plug transformer part further comprises a first filter connected in front of the rectifier, for the input of AC mains A second filter is also connected after the rectifier to filter the rectified high-voltage DC voltage. 8. The charger according to any one of claims 1 to 5, wherein the wall-plug transformer part further comprises a synchronous rectification controller, and the synchronous rectification controller is connected to the transformer to The low-voltage direct current voltage after being stepped down by the transformer is synchronously rectified. 9. The charger according to any one of claims 1 to 5, wherein the wall plug transformer part further comprises a photoelectric sensor, and the main controller adjusts the conduction of the photoelectric sensor by controlling The pulse width of the PWM controller is set by the strength and weakness, so that the pulse width output by the PWM controller is stable in a range matching with the mobile terminal. 10. The charger according to any one of claims 1 to 5, wherein the wall plug transformer part further comprises a voltage feedback module, and the main controller communicates with the transformer through the voltage feedback module. The output low-voltage DC voltage is feedback-regulated.

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