WO2018032509A1 - Charger having type-c port - Google Patents

Abstract

A charger having a Type-C port, comprising a wall plug-in transforming part (1) and a port conversion part (2); the wall plug-in transforming part (1) can be used independently or can be connected with the port conversion part (2) for use as a combination, which combines a Type-C port, a Type-A port or Type-B port, and identification needs to be performed prior to charging a mobile terminal. Since the wall plug-in transforming part (1) can be used independently or can be connected with the port conversion part (2) for use as a combination, the charger is flexible and convenient, and can be used in multiple modes; since the Type-C port of the charger is compliant with the USB3.1 standard and the USB PD protocol, the charger can rapidly charge a device to be charged according to the maximum acceptable voltage, maximum current value and pulse width that are acceptable to a mobile terminal, as well as the type of the mobile terminal, and the charger has a fast data transmission speed; as an identification protocol is provided, and as identification is performed by means of loading a voltage on two middle lines (D+D-) and a key, such that the charger can charge a mobile terminal in a safer manner. When the identification is successful, the mobile terminal is charged rapidly, and when the identification is unsuccessful, the mobile terminal is charged in a regular manner, which charges the mobile terminal while protecting the mobile terminal from damages caused by overly high voltage or current.

Description

A charger with Type-C interface Technical field

The present invention relates to a charger, and in particular to a charger having a Type-C interface.

Background technique

With the increasing function of mobile terminals, they are used more frequently in daily life, consume a lot of power, and the battery capacity is limited. How to achieve fast charging and fully charge the battery as soon as possible is the major manufacturers. R&D focus. In general, charging power exceeding 10W can be called fast charging. For the function machine, the power consumption of the mobile phone is not very large, USB 5V 0.5A can meet the demand; when the smart machine appears, due to the large demand for performance, the power consumption rises, 0.5A can not meet the need; then define An enhanced USB charging identification standard: BC 1.2, which extends the charging current to 5V 1.5A. However, for smartphones above 3000 mAh, even 5V 1.5A at this time can not meet the demand, so the charging current is extended to 5V 2A again, which is Qualcomm's QC 1.0 technology.

However, the charging current cannot be expanded without limitation. When the 5V 2A is reached, the increase of the current is bound to cause the interface and the data line to be unbearable. In general, safe and efficient transmission can only be guaranteed at a current of 2A, up to 3A in the extreme case. In order to increase the charging power under the condition of constant load, the voltage from the charger to the USB interface is increased. Qualcomm QC2.0 has designed two schemes - Class A and Class B. The Class A used in mobile phones can provide 5V output. 9V, 12V three voltages, in fact, basically only use 9V this gear. The B-type solution voltage used in 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 the 200mV increment, making the voltage from 3.6V to 20V flexible.

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

As mentioned earlier, the increase in current is bound to cause the interface and data lines to be unacceptable. Since the number of contacts on the Type-C interface is several times that of the Type A interface, this allows the current strength it can withstand to increase greatly. Under the same current, Type -C charging 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, the data transmission is faster, and it can be compatible with 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 having a Type-C interface, where The utility model comprises: a wall insertion transformer part and an interface conversion part, wherein the wall insertion transformer part can be used independently or in combination with the interface conversion part;

The wall plug transformer portion includes a rectifier, a PWM controller, a transformer, a main controller, and a first interface female; the main controller and the rectifier, the PWM controller, the transformer, and the first interface, respectively The female is connected to perform logic control; according to the logic control instruction of the main controller, the rectifier rectifies the alternating current power into a high voltage direct current voltage, and the PWM controller outputs a pulse width range; according to the PWM controller output The pulse width range, the transformer steps down the high voltage DC voltage to a low voltage DC voltage, and the low voltage DC voltage is output through the first interface female;

The interface conversion part includes a first interface male, an interface conversion module, a second interface, and at least one third interface; the second interface or the third interface passes through the interface conversion module and the first interface male connection;

The first interface female and the first interface male 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 both Type-C interfaces. A Type A interface or a Type B interface and at least one of them is a Type A interface.

Preferably, the Type-C interface conforms to the USB 3.1 standard and the USB PD protocol.

Preferably, the wall insertion transformer portion and the interface conversion portion are connected to each other by the first interface female head and the first interface male connector, or are mutually adsorbed by magnets. The wall insertion transformer portion is more firmly connected to the interface conversion portion, and the magnet is placed in the wall insertion transformer portion and the interface conversion portion.

Preferably, the wall plug-in transformer part further includes a first identity recognition module, where the first identity recognition module is configured to perform identity identification with the mobile terminal or the interface conversion part, and after the identity recognition is successful, the charger pair Mobile terminal charging;

The interface conversion part further includes a second identity recognition module, wherein the second identity recognition module is configured to perform identity identification with the wall plug-in transformer part and the mobile terminal, and after the identity recognition succeeds, the charger passes the The second interface or the third interface charges the mobile terminal.

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

Preferably, the wall plugging and transforming portion further comprises: between the first interface female head and the transformer, a main loop switch is connected, and the controller controls the main circuit switch to be turned on or off To decide whether to quickly charge the mobile terminal.

Preferably, the wall plugging and transforming portion further comprises: a first filter connected to the rectifier, an alternating current mains filter for the input, and a second filter connected to the rectifier, and the rectified high voltage direct current voltage Filtering.

Preferably, the wall plug transformer portion further includes a synchronous rectification controller, and the synchronous rectification The controller is connected to the transformer, and synchronously rectifies the low-voltage DC voltage that is stepped down by the transformer.

Preferably, the wall plugging and transforming portion further includes a photoelectric sensor, and the main controller sets a pulse width of the PWM controller by controlling a conducting strength of the adjusting photosensor, so that the PWM The pulse width of the controller output is stable in the range that matches the mobile terminal.

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

According to the charger with the Type-C interface according to the above embodiment, since the wall plug transformer portion can be used independently or in combination with the interface conversion portion, the charger is flexible and convenient, and can be multi-mode. It is compatible with the Type-C interface, Type A interface or Type B interface when used in combination; since the charger has a Type-C interface that conforms to the USB 3.1 standard and the USB PD protocol, the charger can be moved according to the The highest voltage, maximum current value and pulse width that the terminal can accept and the type of mobile terminal quickly charge the charging device and have a fast data transmission speed; due to the identification protocol, and through the middle two lines (D+D-) The voltage and the key are added to identify, so that the charger can charge the mobile terminal more securely, and the mobile terminal is quickly charged when the recognition is successful, and the mobile terminal is normally charged when the recognition is unsuccessful, so that the mobile terminal can obtain the charging and the mobile terminal is guaranteed. Free from excessive voltage and current damage.

DRAWINGS

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

2 is a schematic structural diagram of a joint portion of a wall plug transformer portion and an interface conversion portion of a charger having a Type-C interface according to an embodiment of the present invention;

3 is an exploded view of an interface conversion portion of a charger having a Type-C interface according to an embodiment of the present invention;

4 is a structural block diagram of a wall plug-in transformer portion of a charger having a Type-C interface according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of an interface conversion part of a charger having a Type-C interface according to an embodiment of the present invention.

detailed description

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

As shown in FIG. 1 and FIG. 2, by the first interface female 11 and the first interface The head 21 is butted so that the wall insertion transformer 1 is connected to the interface conversion portion 2; and the first magnet 141 and the second magnet 142 are coupled to the third magnet 241 and the fourth magnet 242, so that the The wall insertion transformer portion 1 is more firmly connected to the interface conversion portion 2, and the first magnet 141 and the second magnet 142 are placed in the wall insertion transformer portion 1, the third magnet 241 and the fourth magnet 242. It is placed in the interface conversion section 2.

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

3 is an exploded view of an interface conversion portion of a charger having a Type-C interface, the interface conversion portion 2 further including a second interface 22 and at least one third interface 23, the third interface and 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 complies with the USB 3.1 standard and the USB PD (Power Delivery) protocol. Since the Type-C interface complies with the USB 3.1 standard, the USB 3.1 standard supports the power supply standard of the USB PD, so that the maximum power supply can be up to 100 W, and the charging speed is greatly improved; and the Type-C interface data transmission speed conforming to the USB 3.1 standard is also adopted. Up to 10Gps, while the traditional USB3.0 can only reach 5Gps, and 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 portion 1 further includes a fourth interface 15 for receiving AC mains.

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

The first identity recognition module 19 is configured to perform identity recognition with the interface conversion section 2 when the wall plug transformer section 1 and the interface conversion section 2 are combined for charging a mobile terminal.

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

The main controller 17 and the rectifier 16, the PWM controller 18, respectively The compressor 10 is connected to the first interface female 11 for logic control. The rectifier 16 rectifies the AC mains to a high voltage DC voltage in accordance with a logic control command output by the main controller 17. Preferably, the rectifier 16 is also connected with a first filter 101, which filters the input AC mains, filters out high frequency harmonics, distortion and noise of the AC voltage; the rectifier 16 is further connected with a second filter 102, The rectified high-voltage DC voltage filter filters 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 plugging and transforming portion 1 further includes a photosensor 112, and the main controller 17 sets the pulse width of the PWM controller 18 by controlling the conduction strength of the adjusting photosensor 112. The pulse width output by the PWM controller 18 is stabilized in a range that matches 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 implement DC/DC conversion.

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

The wall plug transformer 1 further includes a voltage feedback module 113, and the main controller 17 feeds back the low voltage DC voltage output by the transformer 10 through the voltage feedback module 113. Adjust to correct the low voltage DC voltage value of the transformer 10 output.

The low voltage DC voltage is output through the first interface female 11 to enable charging of the mobile terminal. Preferably, the wall plug transformer portion 1 further includes a main loop switch 114 connected between the first interface female head 11 and the transformer 10, and the main controller 17 controls the main loop switch The turning on or off of 114 determines whether to charge the mobile terminal. When the charger detects an overcurrent (ie, exceeding the maximum current) or an overvoltage (ie, exceeding the maximum voltage) during charging, the main controller 17 will turn off the main loop switch 114 according to the power supply 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.

FIG. 5 is a structural block diagram of an interface conversion part of a charger having a Type-C interface according to the embodiment, where the interface conversion part 2 includes a first interface male 21, an interface conversion module 28, and a second identity. The module 29, the second interface 22 and the third interface 23 are identified.

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

The second interface 22 is in parallel with the third interface 23, 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.

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

In summary, since the wall plugging and transforming portion can be used independently or in combination with the interface converting portion, the charger described in 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; because the charger has a Type-C interface that conforms to the USB 3.1 standard and USB PD. The protocol enables the charger to quickly charge the charging device according to the highest voltage, the maximum current value and the pulse width that the mobile terminal can accept, and the type of the mobile terminal, and the charging power is up to 100 W, and the charger is fast Data transmission speed, its data transmission speed can reach 10Gps; because it has an identification protocol and is identified by loading voltage and key on the middle two lines (D+D-), the charger can charge the mobile terminal more securely. When the identification is successful, the mobile terminal is quickly charged, and when the identification is unsuccessful, the mobile terminal is normally charged, which not only enables the mobile terminal to obtain charging but also protects the mobile terminal from excessive voltage and current.

The present invention has been described with reference to the preferred embodiments thereof, which are merely used to help the understanding of the invention and are not intended to limit the invention. Variations to the above-described embodiments may be made in accordance with the teachings of the present invention.

Claims (10)

A charger having a Type-C interface, comprising: a wall plug transformer portion and an interface conversion portion, wherein the wall plug transformer portion can be used independently or in combination with the interface conversion portion; The wall plug transformer portion includes a rectifier, a PWM controller, a transformer, a main controller, and a first interface female; the main controller and the rectifier, the PWM controller, the transformer, and the first interface, respectively The female is connected to perform logic control; according to the logic control instruction of the main controller, the rectifier rectifies the alternating current power into a high voltage direct current voltage, and the PWM controller outputs a pulse width range; according to the PWM controller output The pulse width range, the transformer steps down the high voltage DC voltage to a low voltage DC voltage, and the low voltage DC voltage is output through the first interface female; The interface conversion part includes a first interface male, an interface conversion module, a second interface, and at least one third interface; the second interface or the third interface passes through the interface conversion module and the first interface male connection; The first interface female and the first interface male are both Type-C interfaces; the second interface is in parallel with the third interface, and the second interface and the third interface are Type-C interfaces or At least one Type A interface is a Type A interface. The charger of claim 1 wherein said Type-C interface character Combined with the USB3.1 standard and the USB PD protocol. The charger according to claim 1, wherein the wall plugging portion and the interface converting portion are connected to the first interface male through the first interface female, or pass through The magnets are attracted to each other such that the wall insertion transformer portion is more firmly connected to the interface conversion portion, and the magnet is placed in the wall insertion transformer portion and the interface conversion portion. A charger as claimed in claim 1 wherein: The wall plug-in transformer part further includes a first identity recognition module, where the first identity recognition module is configured to perform identity identification with the mobile terminal or the interface conversion part, and after the identity recognition succeeds, the charger charges the mobile terminal ; The interface conversion part further includes a second identity recognition module, wherein the second identity recognition module is configured to perform identity identification with the wall plug-in transformer part and the mobile terminal, and after the identity recognition succeeds, the charger passes the The second interface or the third interface charges the mobile terminal. The charger according to claim 4, wherein the protocol for performing identity recognition conforms to QC3.0, and is identified by loading a voltage and a key on the middle two lines (D+D-), and when the identity is successful, The mobile terminal is quickly charged, and the mobile terminal is normally charged when the identity is unsuccessful. The charger according to any one of claims 1 to 5, wherein the wall plugging portion is further The method includes a main loop switch connected between the first interface female head and the transformer, and the controller controls whether the main loop switch is turned on or off to determine whether to charge the mobile terminal. The charger according to any one of claims 1 to 5, wherein the wall plugging and transforming portion further comprises: a first filter connected to the rectifier, and an input AC mains filter, A second filter is also connected to the rectifier to filter the rectified high voltage DC voltage. The charger according to any one of claims 1 to 5, wherein the wall plug transformer portion further comprises a synchronous rectification controller, the synchronous rectification controller being connected to the transformer, The low-voltage DC voltage after the transformer is stepped down is synchronously rectified. The charger according to any one of claims 1 to 5, wherein the wall plug transformer portion further includes a photoelectric sensor, and the main controller controls the conduction of the photosensor by adjusting The pulse width of the PWM controller is set to be weak, so that the pulse width output by the PWM controller is stabilized in a range matching the mobile terminal. The charger according to any one of claims 1 to 5, wherein the wall plug transformer portion further includes a voltage feedback module, and the main controller outputs the transformer through the voltage feedback module The low voltage DC voltage is feedback regulated.

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