WO2018053901A1

WO2018053901A1 - Electronic device and charging method therefor

Info

Publication number: WO2018053901A1
Application number: PCT/CN2016/103869
Authority: WO
Inventors: 丁兆刚
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2016-09-26
Filing date: 2016-10-29
Publication date: 2018-03-29
Also published as: CN106329654A

Abstract

An electronic device (100), the electronic device (100) comprising: a charging module (10), the charging module (10) being configured to connect a charger (200); a CPU (30), the CPU (30) being connected with the charging module (10) and being configured to control the charging module (10) to detect a port type of the connected charger (200) and to acquire charging current corresponding to the port type from the charger (200) so as to charge the electronic device (100); and a MCU (50), the MCU (50) being connected with the charging module (10). The MCU (50) and the charging module (10) are also configured to further detect a specialized charging protocol supported by the charger (200) when the charging module (10) detects that the port type of the charger (200) is a specialized charging port type, and to select a corresponding specialized charging protocol scheme to control the charger (200) to charge the electronic device (100). Further provided is a charging method.

Description

Electronic device and charging method thereof

The present application claims priority to Chinese Patent Application No. Serial No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The present invention relates to the field of rapid charging technologies, and in particular, to an electronic device and a charging method thereof.

Background technique

Existing electronic devices such as mobile phones usually only support one type of fast charging protocol. For example, a mobile phone supporting the QC2.0 protocol usually does not support VOOC (Voltage Open Loop Multi-step Constant-Current Charging). Charging) protocol and Pump Express 2.0 fast charging protocol (referred to as PE+2.0), which can only be quickly charged with a charger supporting QC 2.0 protocol, and cannot be quickly matched with a charger supporting VOOC protocol and PE+2.0 protocol. Charging. Mobile phones that support the VOOC protocol usually do not support the QC2.0 protocol and the PE+2.0 protocol, that is, they can only be quickly charged with a charger that supports the VOOC protocol, and cannot be used with the QC2.0 protocol and the PE+2.0 protocol. Fast charging. Mobile phones that support the PE+2.0 protocol usually do not support the QC2.0 protocol and the VOOC protocol. That is, they can only be quickly charged with a charger that supports the PE+2.0 protocol, and cannot be used with the QC2.0 protocol and the VOOC protocol. Fast charging. Therefore, the compatibility of the existing electronic device with the charger is poor.

Summary of the invention

In view of the above, it is necessary to provide an electronic device that can simultaneously be compatible with a charger supporting the QC2.0 protocol, the PE+2.0 protocol, and the VOOC protocol.

In addition, it is necessary to provide a charging method corresponding to the above electronic device.

An electronic device, the electronic device comprising:

a charging module, the charging module is configured to connect to a charger;

a central processing unit CPU, the CPU being connected to the charging module, configured to control the charging module The block detects a port type of the connected charger, and acquires a charging current corresponding to the port type from the charger according to a port type of the charger to charge the electronic device;

The CPU is further configured to further control, when the charging module detects that the charger is a dedicated charging port type charger, to detect the first type fast charging protocol supported by the charging device, and select Corresponding first type fast charging protocol scheme controls the charger to charge the electronic device;

a micro control unit MCU, the MCU is connected to the charging module, and the MCU is configured to further control the charging module to detect when the charging module detects that the charger is a dedicated charging port type charger a second type of fast charging protocol supported by the charger, and selecting a corresponding second type of fast charging protocol to control the charger to charge the electronic device, wherein the first type of fast charging protocol includes a Quick Charge 2.0 protocol and Pump Express 2.0 protocol, the second type of fast charging protocol includes a voltage open loop multi-step constant current charging VOOC protocol;

When the charging module detects that the charger is a standard downlink port type charger, the CPU acquires a first charging current from the charger to charge the electronic device; and

When the charging module detects that the charger is a charging downlink port type charger, the CPU acquires a second charging current from the charger to charge the electronic device.

According to a preferred embodiment of the present invention, the electronic device further includes a power management module, the power management module is configured to detect whether the charging module is connected to the charger, and when the electronic device is connected to the charger, The CPU controls the charging module to detect a port type of the charger.

According to a preferred embodiment of the present invention, the charging module detects the USB battery charging specification 1.2 protocol to complete the first handshake of the electronic device and the charger.

According to a preferred embodiment of the present invention, when the charging module detects that the charger is a dedicated charging port type charger and does not detect a dedicated charging protocol supported by the charger, according to the 5V charger type The electronic device is charged.

A charging method for controlling a charger to charge an electronic device, the method comprising:

Detecting a port type of the charger;

Retrieving the electronic device by acquiring a corresponding charging current from the charger according to a port type of the charger;

When detecting that the charger is a dedicated charging port type charger, and detecting that the charger supports the first type of fast charging protocol, selecting a corresponding first type fast charging protocol scheme to control the charger to The electronic device is charged;

When detecting that the charger is a dedicated charging port type charger, and detecting that the charger supports the second type fast charging protocol, selecting a corresponding second type fast charging protocol scheme to control the charger to The electronic device is charged. The first type of fast charging protocol includes a Quick Charge 2.0 protocol and a Pump Express 2.0 protocol, and the second type of fast charging protocol includes a voltage open loop multi-step constant current charging VOOC protocol;

When detecting that the charger is a standard downlink port type charger, acquiring a first charging current from the charger to charge the electronic device; and

When it is detected that the charger is a charging downstream port type charger, the second charging current is obtained from the charger to charge the electronic device.

According to a preferred embodiment of the present invention, the method further includes detecting whether a charging module of the electronic device is connected to the charger, and detecting a port type of the charger when the electronic device is connected to the charger .

According to a preferred embodiment of the present invention, the method further includes:

The USB Battery Charging Specification 1.2 protocol is detected to complete the first handshake of the electronic device and the charger.

When it is detected that the charger is a dedicated charging port type charger and the dedicated charging protocol supported by the charger is not detected, the electronic device is charged according to the 5V charger type.

Compared with the prior art, the electronic device and the charging method thereof can detect a charging protocol supported by the charger, and select a corresponding charging protocol to perform charging according to the detection result, so that the electronic device can be compatible with the first type of fast charging. The protocol and the charger of the second type of fast charge protocol are convenient for users to enhance the user experience.

DRAWINGS

1 is a circuit diagram of an electronic device in accordance with a preferred embodiment of the present invention.

2 is a flow chart of the method of the first preferred embodiment of the present invention.

Figure 3 is a flow chart showing the method of the second preferred embodiment of the present invention.

4 is a flow chart of a method in accordance with a third preferred embodiment of the present invention.

Figure 5 is a flow chart showing the method of the fourth preferred embodiment of the present invention.

Figure 6 is a flow chart showing the method of the fifth preferred embodiment of the present invention.

Figure 7 is a flow chart showing the method of the sixth preferred embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are described below in detail in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1, there is shown a circuit diagram of an electronic device 100 in accordance with a preferred embodiment of the present invention. The electronic device 100 includes a charging module 10, a CPU (Central Processing Unit) 30, and an MCU (Micro Controller Unit) 50. The electronic device 100 can be connected to the charger 200 for charging. The charger 200 includes a connector 201. The connector 201 may be a USB connector, and the connector 201 includes a voltage pin VBUS, a ground pin GND, data pins USB_D+(D+), and USB_D-(D-).

The charging module 10 is disposed to be connected to the charger 200. The charging module 10 is directly connected to the VBUS pin and the ground pin GND, and is connected to the data pin USB_D+ via the first resistor R1, and the second resistor R2 and the data. Pin USB_D- is connected.

The CPU 30 is connected to the charging module 10, and is configured to control the charging module 10 to detect the port type of the connected charger 200, and control the charger 200 according to the port type of the charger 200. The charging scheme of the electronic device 100. Specifically, the CPU 30 acquires a charging current corresponding to the port type from the charger 200 to charge the electronic device 100.

In the preferred embodiment, the port type of the charger 200 includes an SDP (Standard Downstream Port) and a CDDP (Charging Downstream Port). Downstream port) and DCP (Dedicated Charging Port). If the charging module 10 detects that the charger 200 is of the SDP type, acquiring a first charging current from the charger 200 to charge the electronic device, if the charging module 10 detects the charger 200 For the CDP type, the second charging current is obtained from the charger 200 to charge the electronic device. In the preferred embodiment, the first charging current is a charging current having a maximum current of about 500 mA, and the second charging current is a charging current having a maximum current of about 900 mA.

If the charging module 10 detects that the charger 200 is a DCP type charger, the CPU 30 controls the charging module 10 to further detect whether the charger 200 supports a first type of fast charging protocol, if the charging The device 200 supports the first type of fast charging protocol, and then selects a corresponding first type of fast charging protocol to charge the electronic device 100.

The MCU 50 is connected to the charging module 10 via a third resistor R3 and a fourth resistor R4, and the MCU 50 is configured to detect when the charging module 10 detects that the charger 200 is a DCP type charger. Whether the charger 200 supports the second type fast charging protocol, if the charger 200 supports the second type fast charging protocol, the corresponding second type fast charging protocol scheme is selected to charge the electronic device 100. In other embodiments, the charging module 10 may also be controlled by the CPU 30 to further detect whether the charger 200 supports the second type of fast charging protocol.

In the preferred embodiment, the first type of fast charging protocol includes a Quick Charge 2.0 protocol and a Pump Express 2.0 fast charging protocol (referred to as PE+2.0), and the second type of fast charging protocol includes a VOOC (Voltage Open Loop). Multi-step Constant-Current Charging, voltage open-loop multi-step constant current charging) protocol. The method for the CPU 30 to specifically detect the first type fast charging protocol supported by the charger 200 and the MCU 50 specifically detecting the second type fast charging protocol supported by the charger 200 will be as shown in FIG. 2 The preferred embodiment of the invention shown in Figure 7 is specifically described in detail.

In another preferred embodiment of the present invention, the electronic device 100 further includes a power management module 70, the power management module 70 is configured to detect whether the electronic device 100 is connected to the charger 200, if The charging module 10 is connected to the charger 200, and the charging module 10 detects the port type of the charger 200. If the charging module 10 is not connected to the charger 200, the power management module 70 The detection is repeated at a preset frequency until it is detected that the charger 200 is connected to the electronic device 100.

Referring to Figure 2, a flow chart of a first preferred embodiment of the charging method of the present invention. The charging method includes the following steps. The preferred embodiment is also a preferred embodiment of the invention. The order of execution in the flowchart shown in the figure may vary depending on various requirements, and some may be omitted.

Step 300, the power management module 70 detects whether the charging module 10 is connected to the charger 200. If it is detected that the electronic device 100 is connected to the charger 200, the process proceeds to step 301, if the electronic device is not detected. The device 100 is connected to the charger 200, and the steps are repeated.

Step 301, the CPU 30 controls the charging module 10 to detect the USB Battery Charging Specification 1.2 protocol (BC 1.2 for short) to complete the first handshake of the electronic device 100 and the charger 200. .

Step 302, the CPU 30 controls the charging module 10 to detect whether the connected charger 200 is a DCP type charger. If it is detected that the connected charger 200 is a DCP type charger 200, then the process proceeds to step 303. If it is detected that the connected charger 200 is not a DCP type charger, then step 310 is entered.

In an embodiment of the present invention, when the electronic device 100 is connected to a charger, then the pull-up power supply VDM_SRC of the D-signal of the electronic device 100 is turned on, that is, the D-signal of the electronic device 100 is high, disconnected. The pull-up power source VDP_SRC of the D+ signal of the electronic device 100 turns on the pull-down current source IDP_SINK of the D+ signal of the electronic device 100. At this time, the D+ signal of the electronic device 100 will become a high level, and at this time, the connected charging is judged accordingly. The device is a DCP type charger.

Step 303, the CPU 30 controls the charging module 10 to detect whether the charger 200 supports the QC2.0 protocol. If the charger 200 supports the QC2.0 protocol, the process proceeds to step 304, if the charger 200 does not If the QC2.0 protocol is supported, the process proceeds to step 305.

In one embodiment of the present invention, the electronic device 100 performs detection according to the USB BC 1.2 specification. When the DCP type charger 200 is detected, the electronic device 100 turns on a pull-up power supply VDP_SRC at its D+. The charger 200 detects the output voltage on D+ and ensures that the output voltage on D+ is higher than the first determination level VDAT_REF and lower than the second determination level VSEL_REF in one second. One second later, the charger 200 opens D+ and D- and turns on the pull-down resistor Rdm_dwn. If D- remains low, the electronic device 100 does not support the QC2.0 protocol specification. If D- remains high, the electronic device 100 supports the QC2.0 protocol.

Step 304, the CPU 30 controls the charging module 10 to adopt a QC2.0 protocol scheme. The electronic device 100 performs charging.

Step 305, the CPU 30 controls the charging module 10 to detect whether the charger 200200 supports the PE+2.0 protocol. If the charger 200 supports the PE+2.0 protocol, the process proceeds to step 306, if the charger 200 does not If the PE+2.0 protocol is supported, the process proceeds to step 307.

In an embodiment of the present invention, when the charging module 10 determines that the charger connected to the electronic device 100 is of the CDP type or the DCP type, the charging module 10 sends a voltage boosting pattern to further distinguish whether the inserted device is in conformity. Power adapter for PE+2.0 protocol.

The output voltage of the charger 200 is adjusted to 7V and maintained. Therefore, the charging module 10 can determine whether the device inserted via the USB connector is a FC-compliant power adapter by measuring VBUS. If the VBUS meets the 7V specification of the power adapter output, it can be determined that the charger 200 supports the PE+2.0 protocol.

Step 306, the CPU 30 controls the charging module 10 to charge the electronic device 100 by using a PE+2.0 protocol scheme.

Step 307, the MCU 50 detects whether the charger 200 supports the VOOC protocol. If the charger 200 supports the VOOC protocol, the process proceeds to step 308. If the charger 200 does not support the QC2.0 protocol, the process proceeds to step 309. .

In one embodiment of the present invention, the charging module 10 determines the protocol of the VOOC by detecting the D+ signal of the connector 201 and the D-signal, wherein D+ is used to transmit the CLK data of the handshake signal, and D- is used to transmit the handshake signal. DATA data.

Step 308, the MCU 50 charges the electronic device 100 by using a VOOC protocol scheme.

Step 309, the CPU 30 controls the charging module 10 to perform regular charging according to a common 5V charger type.

In step 310, the CPU 30 controls the charging module 10 to detect whether the connected charger 200 is an SDP type charger 200. If it is detected that the connected charger 200 is an SDP type charger, the process proceeds to step 311. If it is detected that the connected charger 200 is not an SDP type charger, then step 312 is entered.

In an embodiment of the present invention, after the electronic device 100 is connected to the charger 200, if the charging module 10 detects that the D+ and D- signals of the electronic device are low, it determines that the connected device is an SDP type charger. .

Step 311, the CPU 30 controls the charging module 10 to acquire the first charging current from the charger 200 to charge the electronic device 100. In the preferred embodiment, the first charging current is a charging current having a maximum current of about 500 mA.

Step 312, the CPU 30 controls the charging module 10 to detect whether the connected charger 200 is a CDP type charger 200. If it is detected that the connected charger 200 is a CDP type charger, then the process proceeds to step 305. If it is detected that the connected charger 200 is not a CDP type charger, then step 306 is entered.

In an embodiment of the present invention, when the electronic device 100 is connected to a charger, then the pull-up power supply VDM_SRC of the D-signal of the electronic device 100 is turned on, that is, the D-signal of the electronic device 100 is high, disconnected. The pull-up power source VDP_SRC of the D+ signal of the electronic device 100 turns on the pull-down current source IDP_SINK of the D+ signal of the electronic device 100. At this time, the D+ signal of the electronic device 100 will become a low level, and the connected charger can be judged accordingly. A charger for the CDP type.

Step 313, the CPU 30 controls the charging module 10 to acquire the second charging current from the charger 200 to charge the electronic device 100. In the preferred embodiment, the second charging current is a charging current having a maximum current of about 900 mA.

Step 314, the CPU 30 controls the charging module 10 to set to acquire a third charging current from the charger 200 to charge the electronic device 100. In the preferred embodiment, the third charging current is a charging current having a maximum current of about 500 mA.

It can be understood that, as shown in FIG. 3, in the second preferred embodiment of the present invention, when the determination in step 302 is YES, step 303 is performed. If the determination in step 303 is YES, step 304 is performed; if the determination in step 303 is no, step 307 is performed. When the determination in step 307 is YES, step 308 is performed; if the determination in step 307 is NO, step 305 is performed. When the determination in step 305 is NO, step 309 is performed. When the determination in step 305 is YES, step 306 is performed. The other steps are the same as in FIG. 2 and will not be described again.

It can be understood that, as shown in FIG. 4, in the third preferred embodiment of the present invention, when the determination in step 302 is YES, step 305 is performed. When the determination in step 305 is YES, step 306 is performed; If the determination is no, step 303 is performed. If the determination in step 303 is YES, step 304 is performed; if the determination in step 303 is no, step 307 is performed. When the determination in step 307 is NO, step 309 is performed. When the determination in step 307 is YES, step 308 is performed. The other steps are the same as in FIG. 2 and will not be described again.

It can be understood that, as shown in FIG. 5, in the fourth preferred embodiment of the present invention, when the determination in step 302 is YES, step 305 is performed. If the determination in step 305 is YES, step 306 is performed; if the determination in step 305 is no, step 307 is performed. If the determination in step 307 is YES, step 308 is performed; if the determination in step 307 is no, step 303 is performed. When the determination in step 303 is NO, step 309 is performed. When the determination in step 303 is YES, step 304 is performed. The other steps are the same as in FIG. 2 and will not be described again.

It can be understood that, as shown in FIG. 6, in the fifth preferred embodiment of the present invention, when the determination in step 302 is YES, step 307 is performed. If the determination in step 307 is YES, step 308 is performed; if the determination in step 307 is no, step 303 is performed. If the determination in step 303 is YES, step 304 is performed; if the determination in step 303 is no, step 305 is performed. If the determination in step 305 is YES, step 306 is performed; if the determination in step 305 is no, step 309 is performed. The other steps are the same as in FIG. 2 and will not be described again.

It can be understood that, as shown in FIG. 7, in the sixth preferred embodiment of the present invention, when the determination in step 302 is YES, step 307 is performed. When the determination in step 307 is YES, step 308 is performed; if the determination in step 307 is NO, step 305 is performed. If the determination in step 305 is YES, step 306 is performed; if the determination in step 305 is no, step 303 is performed. If the determination in step 303 is YES, step 304 is performed; if the determination in step 303 is no, step 309 is performed. The other steps are the same as in FIG. 2 and will not be described again.

The electronic device 100 and the charging method thereof can detect the dedicated fast charging and charging protocol supported by the charger 200, and select a corresponding dedicated fast charging and charging protocol to perform charging according to the detection result, so that the electronic device 100 can be compatible with the first support. The fast charging protocol and the second type of fast charging protocol charger 200 are convenient for users to enhance the user experience.

It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim. In addition, obviously The word "comprising" does not exclude other elements or the singular does not exclude the plural. A plurality of units or devices recited in the system claims can also be implemented by a unit or device by software or hardware. The first, second, etc. words are used to denote names and do not denote any particular order.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Modifications or equivalents are made without departing from the spirit and scope of the invention.

Claims

An electronic device, the electronic device comprising:

a charging module, the charging module is configured to connect to a charger;

a central processing unit CPU, the CPU is connected to the charging module, configured to control the charging module to detect a port type of the connected charger, and obtain from the charger according to a port type of the charger a charging current corresponding to the port type to charge the electronic device;

The CPU is further configured to further control, when the charging module detects that the charger is a dedicated charging port type charger, to detect the first type fast charging protocol supported by the charging device, and select Corresponding first type fast charging protocol scheme controls the charger to charge the electronic device;

a micro control unit MCU, the MCU is connected to the charging module, and the MCU is configured to further control the charging module to detect when the charging module detects that the charger is a dedicated charging port type charger a second type of fast charging protocol supported by the charger, and selecting a corresponding second type of fast charging protocol to control the charger to charge the electronic device, wherein the first type of fast charging protocol includes a Quick Charge 2.0 protocol and Pump Express 2.0 protocol, the second type of fast charging protocol includes a voltage open loop multi-step constant current charging VOOC protocol;

When the charging module detects that the charger is a standard downlink port type charger, the CPU acquires a first charging current from the charger to charge the electronic device; and

When the charging module detects that the charger is a charging downlink port type charger, the CPU acquires a second charging current from the charger to charge the electronic device.
The electronic device according to claim 1, wherein the electronic device further comprises a power management module, the power management module is configured to detect whether the charging module is connected to a charger, and at the electronic device When the charger is connected, the CPU controls the charging module to detect the port type of the charger.
The electronic device according to claim 1, wherein the charging module detects the USB battery charging specification 1.2 protocol to complete the first handshake of the electronic device and the charger.
The electronic device according to claim 1, wherein when the charging module detects that the charger is a dedicated charging port type charger, and does not detect the special supported by the charger When the charging protocol is used, the electronic device is charged in accordance with the 5V charger type.
A charging method for controlling charging of an electronic device by a charger, characterized in that the method comprises:

Detecting a port type of the charger;

Retrieving the electronic device by acquiring a corresponding charging current from the charger according to a port type of the charger;

When detecting that the charger is a dedicated charging port type charger, and detecting that the charger supports the first type of fast charging protocol, selecting a corresponding first type fast charging protocol scheme to control the charger to The electronic device is charged;

When detecting that the charger is a dedicated charging port type charger, and detecting that the charger supports the second type fast charging protocol, selecting a corresponding second type fast charging protocol scheme to control the charger to The electronic device is charged. The first type of fast charging protocol includes a Quick Charge 2.0 protocol and a Pump Express 2.0 protocol, and the second type of fast charging protocol includes a voltage open loop multi-step constant current charging VOOC protocol;

When detecting that the charger is a standard downlink port type charger, acquiring a first charging current from the charger to charge the electronic device; and

When it is detected that the charger is a charging downstream port type charger, the second charging current is obtained from the charger to charge the electronic device.
The charging method according to claim 5, wherein the method further comprises detecting whether a charging module of the electronic device is connected to the charger, and detecting when the electronic device is connected to the charger The port type of the charger.
The charging method according to claim 5, wherein the method further comprises:

The USB Battery Charging Specification 1.2 protocol is detected to complete the first handshake of the electronic device and the charger.
The charging method according to claim 5, wherein the method further comprises:

When it is detected that the charger is a dedicated charging port type charger and the dedicated charging protocol supported by the charger is not detected, the electronic device is charged according to the 5V charger type.