WO2023000814A1

WO2023000814A1 - Power adapter and charging control method

Info

Publication number: WO2023000814A1
Application number: PCT/CN2022/095252
Authority: WO
Inventors: 黄锦赞; 汤厚涛
Original assignee: 深圳英集芯科技股份有限公司
Priority date: 2021-07-23
Filing date: 2022-05-26
Publication date: 2023-01-26
Also published as: CN115693877A; CN113285517B; CN113285517A

Abstract

A power adapter and a charging control method. The power adapter comprises: a rectifier circuit, a first adapter, a second adapter, a first PD protocol chip, a second PD protocol chip, a flow distribution switch, a first output port, and a second output port; the rectifier circuit is separately connected to the first adapter and the second adapter; the first adapter is connected to the first PD protocol chip; the second adapter is connected to the second PD protocol chip; the first PD protocol chip is connected to the first output port; the second PD protocol chip is connected to the second output port; the first adapter is connected to the second adapter by means of the flow distribution switch; the first PD protocol chip is connected to the second PD protocol chip; the first PD protocol chip and the second PD protocol chip are both connected to the flow distribution switch.

Description

Power adapter and charging control method

This application claims the priority of the Chinese patent application with the application number 202110839217.1 and the application title "power adapter and charging control method" submitted to the China Patent Office on July 23, 2021, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the field of electronic technology, in particular to a power adapter and a charging control method.

Background technique

With the rapid development and popularization of USB power delivery (USB PD) fast charging technology, more and more charging devices support USB PD fast charging technology. Especially in high-power USB PD applications, the application demand for multi-USB interface charging equipment is also increasing. Among them, the most typical application is the PD charger with dual USB-C interfaces. Traditional dual USB-C interface PD chargers usually use a dual-channel transformer solution. Each transformer independently controls one USB PD power output, and its power control is not flexible enough. Therefore, how to improve the dual USB-C interface PD charger The problem of flexibility needs to be solved urgently.

Contents of the invention

Embodiments of the present application provide a power adapter and a charging control method, which can improve the flexibility of a PD charger with dual USB-C interfaces.

In the first aspect, an embodiment of the present application provides a power adapter, the power adapter includes: a rectifier circuit, a first adapter, a second adapter, a first PD protocol chip, a second PD protocol chip, a shunt switch, and a first output port , the second output port, where,

The rectification circuit is respectively connected to the first adapter and the second adapter; the first adapter is connected to the first PD protocol chip; the second adapter is connected to the second PD protocol chip; A PD protocol chip is connected to the first output port; the second PD protocol chip is connected to the second output port; the first adapter is connected to the second adapter through the shunt switch; the first PD protocol The chip is connected to the second PD protocol chip; both the first PD protocol chip and the second PD protocol chip are connected to the shunt switch.

In the second aspect, the embodiment of the present application provides a charging control method, which is applied to the power adapter as described in the first aspect, and the method includes:

Detecting the connection status of the first output port and the second output port;

When only the first output port is connected to the first electric device, the working power of the first output port is set as the total power;

When only the second output port is connected to the second electric device, the working power of the second output port is set as the total power.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are configured by the above Executed by a processor, the above program includes instructions for executing the steps in the second aspect of the embodiments of the present application, or, the electronic device includes the power adapter.

In a fourth aspect, the embodiment of the present application provides a computer-readable storage medium, wherein the above-mentioned computer-readable storage medium stores a computer program for electronic data exchange, wherein the above-mentioned computer program enables the computer to execute Some or all of the steps described in one aspect.

In a fifth aspect, the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the computer to execute the program as implemented in the present application. Some or all of the steps described in the first aspect. The computer program product may be a software installation package.

Implementing the embodiment of the present application has the following beneficial effects:

It can be seen that the power adapter described in the embodiment of this application includes: a rectifier circuit, a first adapter, a second adapter, a first PD protocol chip, a second PD protocol chip, a shunt switch, a first output port, and a second output port. port, wherein the rectifier circuit is respectively connected to the first adapter and the second adapter; the first adapter is connected to the first PD protocol chip, the second adapter is connected to the second PD protocol chip, the first PD protocol chip is connected to the first output port, and the second The PD protocol chip is connected to the second output port, the first adapter is connected to the second adapter through the shunt switch, the first PD protocol chip is connected to the second PD protocol chip, the first PD protocol chip and the second PD protocol chip are both connected to the shunt switch, and the second PD protocol chip is detected. The access situation of the first output port, when only the first output port is connected to the first electrical equipment, set the working power of the first output port as the total power, and detect the access status of the second output port, and when only the second output port is connected When the port is connected to the second electrical device, set the working power of the second output port as the total power. On the one hand, through the communication mechanism between the first PD protocol chip and the second PD protocol chip, the first adapter, Inform the other party of the working status of the second adapter and the access conditions of the first output port and the second output port. On the other hand, the PD control strategy between the first PD protocol chip and the second PD protocol chip can be used to pass the shunt The switch realizes the shunt operation to ensure that the single-port output can be charged with the total power of the power adapter, which in turn can improve the flexibility of the PD charger with dual USB-C ports.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a power adapter provided in an embodiment of the present application;

Fig. 2 is another schematic structural diagram of a power adapter provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of a charging control method provided in an embodiment of the present application;

Fig. 4 is a schematic flowchart of another charging control method provided by the embodiment of the present application;

Fig. 5 is a schematic structural diagram of another power adapter provided by an embodiment of the present application.

detailed description

In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only the present invention. Some, but not all, embodiments of the application. Based on the description of the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but also includes steps or units that are not listed, or includes , other steps or units inherent in the product or equipment.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The following describes the embodiments of the present application in conjunction with the accompanying drawings. In the drawings, dots at the intersections of intersecting conductors indicate that the conductors are connected, and no dots at the intersections indicate that the conductors are not connected.

Please refer to Figure 1, Figure 1 is a schematic structural diagram of a power adapter provided by an embodiment of the present application, the power adapter includes: a rectifier circuit, a first adapter, a second adapter, a first PD protocol chip, and a second PD protocol chip , shunt switch, first output port, second output port, wherein,

Wherein, the rectification circuit may be electromagnetic interference (EMI) filtering and bridge rectification, and the rectification circuit may be connected to an external power supply, for example, the conversion of alternating current to direct current may be realized through the rectification circuit. The external power supply can be AC/DC power supply, DC/DC power supply, regulated power supply, communication power supply, module power supply, variable frequency power supply, inverter power supply, AC regulated power supply, DC regulated power supply, etc. limited.

Among them, the first output port is used to connect the first USB data line, and the first USB data line is used to connect the first electric equipment; the second output port is used to connect the second USB data line, and the second USB data line is used to connect Second electrical equipment.

Wherein, both the first power-consuming device and the second power-consuming device may include, but are not limited to: smartphones, tablet computers, smart robots, smart elevators, vehicle-mounted devices, wearable devices, smart home devices, computing devices, or connected to wireless modems Other processing equipment, as well as various forms of user equipment (user equipment, UE), mobile station (mobile station, MS), terminal equipment (terminal device) and so on. The first power-consuming device can be understood as any device connected to the first outlet for charging, and the second power-consuming device can be understood as any device connected to the second outlet for charging.

Wherein, the first PD protocol chip is used to obtain the first charging parameter of the first electric device through the first output port, and the first charging parameter may include at least one of the following: charging voltage, charging current, charging mode, charging power, etc. , is not limited here. The first PD protocol chip can be used to detect whether the first output port is connected to the first electric device. The first PD protocol chip can be connected to the first output port through the pins CC1 and CC2.

Wherein, the second PD protocol chip is used to obtain the second charging parameter of the second electric device through the second output port, and the second charging parameter may include at least one of the following: charging voltage, charging current, charging mode, charging power, etc. , is not limited here. The second PD protocol chip can be used to detect whether the second output port is connected to the second electric device. The second PD protocol chip is connected to the second output port through the pins CC1 and CC2.

Wherein, the first PD protocol chip can also communicate with the second PD protocol chip through the offload communication interface. The first PD protocol chip can inform the second PD protocol chip of the charging parameters applied by the first electric device, and the second PD protocol chip can also inform the first PD protocol chip of the charging parameters applied by the second electric device. The first PD protocol chip can obtain output parameters of the first adapter, where the output parameters include output voltage values and/or output current values. The second PD protocol chip can obtain output parameters of the second adapter, where the output parameters include output voltage values and/or output current values. The first PD protocol chip and the second PD protocol chip can adjust the operating voltage or operating current of the first adapter or the second adapter through a preset PD control strategy. When the above current distribution communication interface implements the current sharing function, it may also be referred to as a current sharing communication interface.

Wherein, the shunt switch can be used to adjust the working current of the first adapter and the second adapter. The shunt switch can be made of MOS transistors.

Wherein, the structures of the first adapter and the second adapter may be the same or different; the function of the first output port may be the same as that of the second output port, or different.

Further, please refer to FIG. 2. FIG. 2 is another schematic structural diagram of a power adapter provided by an embodiment of the present application, wherein,

The first adapter may include: a first AC-DC control chip, a first main power switch circuit, a first high-frequency transformer, and a first rectifier module, wherein the first main power switch circuit is connected to the rectifier circuit, The first AC-DC control chip and the first high-frequency transformer, the first high-frequency transformer is connected to the first rectification module, the first rectification module is connected to the first PD protocol chip, the The first PD protocol chip is connected to the first AC-DC control chip.

Wherein, the first PD protocol chip communicates with the first AC-DC control chip through the I2C communication interface, and the first PD protocol chip is used to set the working parameters of the first AC-DC control chip, and the working parameters may include at least one of the following : Working voltage, working current, working power, etc. are not limited here. The first PD protocol chip can also obtain the current value of the first adapter.

Optionally, the power adapter further includes a first switch, wherein the first rectification module is connected to the first switch, and the first switch is connected to the first PD protocol chip and the first output port.

Among them, the first switch can be a MOS tube. Under the Type-c protocol, the first switch is used to realize that under the default condition of the C port, no voltage is output. When the SINK terminal access of the first output port is detected, Only when the first switch is turned on, the voltage of 5V is output.

Optionally, the second adapter includes: a second AC-DC control chip, a second main power switch circuit, a second high-frequency transformer, and a second rectifier module, wherein the second main power switch circuit is connected to the A rectifier circuit, the second AC-DC control chip, and the second high-frequency transformer, the second high-frequency transformer is connected to the second rectifier module, and the second rectifier module is connected to the second PD protocol chip , the second PD protocol chip is connected to the second AC-DC control chip.

Wherein, the second PD protocol chip communicates with the second AC-DC control chip through the I2C communication interface, and the second PD protocol chip is used to set the working parameters of the second AC-DC control chip, and the working parameters may include at least one of the following : Working voltage, working current, working power, etc. are not limited here. The second PD protocol chip can also obtain the current value of the second adapter.

Optionally, the power adapter further includes a second switch, wherein,

The second rectification module is connected to the second switch, and the second switch is connected to the second PD protocol chip and the second output port.

Among them, the second switch can be a MOS tube. Under the Type-c protocol, the second switch is used to realize that under the default condition of the C port, no voltage is output. When the SINK terminal access of the second output port is detected, The second switch is turned on to output 5V voltage.

Optionally, the first rectification module is connected to the shunt switch, and the second rectification module is connected to the shunt switch.

Wherein, the first rectification module is used for filtering and rectifying the output current of the first adapter. The second rectification module is used for filtering and rectifying the output current of the second adapter. By connecting the first rectification module to the shunt switch and the second rectification module to the shunt switch, the shunt switch can know the output current of the first adapter and the output current of the second adapter. The shunt switch can be composed of 2 MOS transistors, and the 2 MOS transistors can be used to adjust the current of the first adapter and the second adapter respectively, and realize the current sharing function when the currents of the first adapter and the second adapter are almost equal.

Wherein, both the first PD protocol chip and the second PD protocol chip can be built-in microcontroller unit (microcontroller unit, MCU) type protocol integrated circuit (integrated circuit, IC) of model IP2726, IP2723T, IP2712, INNO3PRO, etc. It can be other types of system-on-chip (SOC).

Based on the above power adapter, it can be used to realize the following functions:

The first PD protocol chip is used to detect the access of the first output port; when only the first output port is connected to the first electrical device, the working power of the first output port is set to total power;

The second PD protocol chip is used to detect the access of the second output port; when only the second output port is connected to the second electrical device, the working power of the second output port is set to the total power.

Optionally, when only the first output port is connected to the first electric device;

The first PD protocol chip is configured to obtain a first charging parameter applied by the first electric device, where the first charging parameter includes a first charging voltage and a first charging current;

The first PD protocol chip is configured to notify the second PD protocol chip of the first charging parameter of the first electric device;

The second PD protocol chip is used to control the second AC-DC control chip to work with preset working parameters, the preset working parameters include working voltage and working current, the working voltage and the first The charging voltages are equal, and the operating current is determined by the first charging current, the first charging parameter corresponding to the first output port, and the second charging parameter corresponding to the second output port;

The shunt switch is used for shunting operation.

Optionally, the first adapter is configured to obtain a first current value output by the first adapter; the second adapter is configured to obtain a second current value output by the second adapter; the first PD protocol chip, used for the first comparison result between the first current value and the second current value; and when the first comparison result is not in the preset range, determine according to the first comparison result A target voltage adjustment parameter; the first AC-DC control chip is configured to adjust the operating voltage of the first AC-DC control chip according to the target voltage adjustment parameter.

Optionally, the first adapter is configured to acquire a third current value of the first adapter; the second adapter is configured to acquire a fourth current value of the second adapter; the first PD protocol A chip configured to determine a second comparison result between the third current value and the fourth current value; and determine that the shunt operation is successful when the second comparison result is within the preset range.

Optionally, when the first output port is connected to the first electric device and the second output port is connected to the second electric device; the first PD protocol chip is used to obtain the first output the first charging parameter corresponding to the port; the second PD protocol chip is used to obtain the second charging parameter corresponding to the second output port; the first PD protocol chip is used to obtain the second charging parameter corresponding to the second output port; The second charging parameter determines the first working power of the first outlet and the second working power of the second outlet, and the sum of the first working power and the second working power is the power supply The total power of the adapter; the first PD protocol chip is used to control the first output port to work with the first working power; the second PD protocol chip is used to control the second output port to work with the The second working power works.

Optionally, in terms of determining the first operating power of the first outlet and the second operating power of the second outlet according to the first charging parameter and the second charging parameter, the first A PD protocol chip is specifically used for:

The first working power and the second working power are determined according to the following formula:

P ₁ =P _a *(S ₁ /(S ₁ +S ₂ ))

P ₂ =P _a -P ₁

Wherein, P _a is the total power, S ₁ is the first charging parameter, S ₂ is the second charging parameter, P ₁ is the first working power, and P ₂ is the second working power. The total power may be the maximum power of the power adapter.

It can be seen that the power adapter described in the embodiment of this application includes: a rectifier circuit, a first adapter, a second adapter, a first PD protocol chip, a second PD protocol chip, a shunt switch, a first output port, and a second output port. port, wherein the rectifier circuit is respectively connected to the first adapter and the second adapter; the first adapter is connected to the first PD protocol chip, the second adapter is connected to the second PD protocol chip, the first PD protocol chip is connected to the first output port, and the second The PD protocol chip is connected to the second output port, the first adapter is connected to the second adapter through the shunt switch, the first PD protocol chip is connected to the second PD protocol chip, the first PD protocol chip and the second PD protocol chip are both connected to the shunt switch, and the second PD protocol chip is detected. The access situation of the first output port, when only the first output port is connected to the first electrical equipment, set the working power of the first output port as the total power; detect the access status of the second output port, When the port is connected to the second electrical device, set the working power of the second output port as the total power. On the one hand, through the communication mechanism between the first PD protocol chip and the second PD protocol chip, the first adapter, Inform the other party of the working status of the second adapter and the access conditions of the first output port and the second output port. On the other hand, the PD control strategy between the first PD protocol chip and the second PD protocol chip can be used to pass the shunt The switch realizes the shunt operation to ensure that the single-port output can be charged with the total power of the power adapter, which in turn can improve the flexibility of the PD charger with dual USB-C ports.

Please refer to FIG. 3 . FIG. 3 is a schematic flowchart of a charging control method provided by an embodiment of the present application, which is applied to the power adapter shown in FIG. 1 or FIG. 2 . As shown in Figure 3, the method includes the following steps:

301. Detect the connection status of the first output port and the second output port.

Wherein, the first PD protocol chip can be used to detect the connection status of the first output port, and the second PD protocol chip can be used to detect the connection status of the second output port.

302. When only the first output port is connected to the first electric device, set the working power of the first output port as the total power.

In a specific implementation, when only the first output port is connected to the first electric device, the working power of the first output port can be set as the total power through the first PD protocol chip. In the embodiment of the present application, the total power is the total power of the power adapter.

303. When only the second output port is connected to the second electric device, set the working power of the second output port to the total power.

In a specific implementation, when only the second output port is connected to the second electric device, the working power of the second output port can be set as the total power through the second PD protocol chip.

Optionally, when only the first output port is connected to the first electric device, the following steps may also be included:

A1. Obtain the first charging parameters requested by the first electric device through the first PD protocol chip, and the first charging parameters include a first charging voltage and a first charging current;

A2. Notifying the second PD protocol chip of the first charging parameter of the first electric device through the first PD protocol chip;

A3. Control the second AC-DC control chip to work with preset working parameters through the second PD protocol chip. The preset working parameters include working voltage and working current, and the working voltage and the first The charging voltages are equal, and the operating current is determined by the first charging current, the first charging parameter corresponding to the first output port, and the second charging parameter corresponding to the second output port;

A4. Perform a shunt operation through the shunt switch.

Wherein, the first PD protocol chip can communicate with the first electric device, and then, can obtain the first charging parameter of the first electric device, and the first charging parameter can include at least one of the following: charging voltage, charging Current, charging mode, charging power, etc. are not limited here.

Wherein, the first charging parameter may include at least one of the following: rated voltage, rated current, voltage required by electrical equipment, current required by electrical equipment, power required by electrical equipment, etc., which are not limited here. The charging parameters may include at least one of the following: rated voltage, rated current, voltage required by the electrical device, current required by the electrical device, power required by the electrical device, etc., which are not limited herein. Alternatively, the first charging parameter may be a charging parameter in a different mode, and the second charging parameter may also be a charging parameter in a different mode. For example, the first charging parameter may include any of the following: charging parameters in a normal charging mode, The charging parameters in the fast charging mode and the charging parameters in the super fast charging mode are not limited here. For another example, the second charging parameters can include any of the following: charging parameters in the normal charging mode, charging in the fast charging mode parameters, charging parameters in super fast charging mode.

In a specific implementation, the charging mode corresponding to the first outlet may be the same as or different from the charging mode corresponding to the second outlet.

Wherein, the shunt switch is used to achieve a certain ratio between the output current of the first adapter and the output current of the second adapter, for example, the output current of the first adapter is equal to the output current of the second adapter.

In a specific implementation, the first charging parameter applied by the first electric device can be obtained through the first PD protocol chip. The first charging parameter can include the first charging voltage and the first charging current, and the first PD protocol chip can also be used to notify the first charging parameter The second PD protocol chip controls the second AC-DC control chip to work with preset working parameters, which can include working voltage and working current , the working voltage is equal to the first charging voltage, and the working current is determined by the first charging current, the first charging parameter and the second charging parameter, and the specific calculation method is as follows:

Working current = first charging current * (first charging parameter / (first charging parameter + second charging parameter))

Furthermore, the shunt operation can be performed through the shunt switch, and the shunt operation can be used to adjust the current difference between the first adapter and the second adapter.

Further, the following steps may also be included:

A5. Obtain the first current value of the first adapter and the second current value of the second adapter;

A6. Determine a first comparison result between the first current value and the second current value;

A7. When the first comparison result is not within a preset range, determine a target voltage adjustment parameter according to the first comparison result;

A8. Adjust the working voltage of the first AC-DC control chip according to the target adjustment parameter.

Wherein, the preset range may be preset or defaulted by the system.

Specifically, the electronic device can obtain the first current value of the first adapter through the first PD protocol chip, and obtain the second current value of the second adapter through the second PD protocol chip, and can also determine the first current value and the second current value The first comparison result between values, for example, the first comparison result can be the difference between the first current value and the second current value, or the first comparison result can be the difference between the first current value and the second current value ratio between.

Further, when the first comparison result is not within the preset range, the target voltage adjustment parameter can be determined according to the first comparison result. In specific implementation, the mapping relationship between the comparison result and the voltage adjustment parameter can be pre-stored in the power adapter, and then Determine the target voltage adjustment parameter corresponding to the first comparison result according to the mapping relationship. The target voltage adjustment parameter can be a specific voltage adjustment value, for example, 10mV; the target voltage adjustment parameter can also be a proportional coefficient, and the value range can be -1～1 Between -1 and 0 is to lower the voltage, and between 0 and 1 is to increase the voltage. The target voltage adjustment parameter can be fed back to the first AC-DC control chip through the first PD protocol chip, and the operating voltage of the first AC-DC control chip is adjusted according to the target voltage adjustment parameter to adjust the operating voltage of the first adapter to achieve regulation The purpose of the output current of the first adapter is to make the current relationship between the first adapter and the second adapter satisfy a preset range.

Further, optionally, the following steps may be included:

A9. Obtain the third current value of the first adapter and the fourth current value of the second adapter;

A10. Determine a second comparison result between the third current value and the fourth current value;

A11. When the second comparison result is within the preset range, it is determined that the diversion operation is successful.

In a specific implementation, the third current value of the first adapter can be obtained through the first PD protocol chip, and the fourth current value of the second adapter can be obtained through the second PD protocol chip, and then the difference between the third current value and the fourth current value can be determined. For example, the second comparison result can be the difference between the first current value and the second current value, or the second comparison result can be the difference between the first current value and the second current value ratio. When the second comparison result is within the preset range, it is determined that the shunt operation is successful.

Further, optionally, the following steps may also be included:

B1. When the first output port is connected to the first electric device and the second output port is connected to the second electric device, obtain the first charging parameter corresponding to the first output port and the second The second charging parameter corresponding to the output port;

B2. Determine the first operating power of the first output port and the second operating power of the second output port according to the first charging parameter and the second charging parameter, the first operating power and the The sum of the second working power is the total power of the power adapter;

B3. Control the first output port to work at the first working power;

B4. Control the second output port to work at the second working power.

Specifically, when the first output port is connected to the first electric device and the second output port is connected to the second electric device, the first charging parameter corresponding to the first output port can be obtained through the first PD protocol chip, and the first charging parameter corresponding to the first output port can be obtained through the The second PD protocol chip obtains the second charging parameter corresponding to the second output port, and then the first working of the first output port can be determined according to the first charging parameter and the second charging parameter through the first PD protocol chip or the second PD protocol chip power and the second working power of the output port, the sum of the first working power and the second working power is the total power of the power adapter, and then, the first output port is controlled to work at the first working power, and the second output port is controlled to work at the first working power. Two working power to work.

Optionally, in the above step B2, determining the first operating power of the first output port and the second operating power of the second output port according to the first charging parameter and the second charging parameter may be as follows way to implement:

P ₁ =P _a *(S ₁ /(S ₁ +S ₂ ))

P ₂ =P _a -P ₁

Wherein, P _a is the total power, S ₁ is the first charging parameter, S ₂ is the second charging parameter, P ₁ is the first working power, and P ₂ is the second working power.

In a specific implementation, when the first adapter and the second adapter are adapters with the same function and structure, then P ₁ =P ₂ , and both the first working power and the second working power are half of the total power. In this case, the parallel shunt technology proposed in the embodiment of the present application adopts a digital control method to realize the shunt of two AC-DC power converters. It can make the output current of each power part basically consistent, so as to achieve the effect of shunting.

In the embodiment of the present application, the parallel shunt technology is introduced, so that without increasing the hardware cost, the dual USB PD application adapter can realize the shunt of the dual-channel AC-DC converter in the case of single-port application, and at the same time can output in the case of single-port access. The maximum power of the device, in addition, also improves the efficiency of single-port output. In single-port application, only one-stage power converter is used to realize the total power for charging.

It can be seen that the charging control method described in the embodiment of the present application, on the one hand, through the communication mechanism between the first PD protocol chip and the second PD protocol chip, can realize the working status of the first adapter and the second adapter And inform the other party of the access status of the first output port and the second output port. On the other hand, the PD control strategy between the first PD protocol chip and the second PD protocol chip can be used to realize the shunt operation through the shunt switch, ensuring In the case of single-port output, the charging operation can be performed with the total power of the power adapter, which in turn can improve the flexibility of the PD charger with dual USB-C ports.

In the embodiment of this application, since the first output port is any output port in the power adapter, similarly, when only the second output port is connected to the second electric device, the specific control strategy can refer to the The relevant description of the control strategy when an output port is connected to the first electric device will not be repeated here.

For example, as shown in Figure 4, in the case where the first adapter and the second adapter have the same structure, the current sharing effect can be achieved, and the embodiment of the present application can be implemented according to the following steps:

S1. Initialize the USB PD control strategy after power-on.

S2. Judging the current dual-port access status, and judging whether the dual-port access is simultaneous. If they are accessed at the same time, execute step S6; otherwise, execute step S3.

S3. Judging whether the first outlet is connected, if connected, execute step S4, otherwise execute step S5.

S4. Set the output power of the first output port as P, and execute step S7.

S5. Set the output power of the second output port as P, and execute step S7.

S6. Under the condition that both ports are connected, set the output power of the first output port and the second output port to P/2 respectively. Go to step 15.

S7. Obtain the charging voltage V and charging current A applied by the electric device. Execute step S8.

S8. The party connecting the port notifies the non-connected port of the voltage V and current value A currently applied by the device through the current sharing communication interface. Execute step S9.

S9. After the access terminal interface and the non-access terminal interface obtain the voltage V and current A applied by the electrical equipment, set the output voltage V of INNO3PRO through the I2C interface, and set the output constant current value to A/2. Execute step S10.

S10, turn on the current sharing MOS (shunt switch), and start parallel current sharing. Execute step S11.

S11. After the current sharing starts, the current sharing communication port notifies the other party in real time of the real-time current value and voltage value of the current port. Execute step S12.

S12. Judging whether the current current value is equal to the current value of the counterpart device. If they are equal, execute step 14, otherwise, execute step S13.

S13. Adjusting the current sharing voltage and current sharing phases. This process compares the current value of the current port with that of the opposite port. If the current current is greater than the current of the opposite port, the voltage of the current output port is reduced by 10mV; otherwise, the current of the current port is lower than the current of the opposite port, and the voltage of the current port is increased by 10mV. It is judged whether the current current is equal to the current of the opposite port, if they are equal, execute step S14, otherwise continue to execute step S13.

S14. The current sharing is successful. In this state, the software will set the current sharing flag. Execute state S15.

S15. Idle (Idle) state. In this state, it marks the end of a process. Continue to execute from step S1.

In the embodiment of this application, the digital parallel current sharing technology is adopted. From the control strategy, the introduction of the current sharing technology can effectively solve the problem that the whole machine cannot output all the power in the case of a single port. The maximum output power of the device under single-port application is greatly improved.

For example, as shown in FIG. 5, FIG. 5 is a schematic structural diagram of a power adapter with dual USB ports in the related art. In the related art, as shown in Table 1, it is a strategy for power allocation that can be realized in the related art. The power distribution in the related art is not intelligent and flexible enough. The two-way AC-DC converter has a fixed output power P _MAX /2. When a single port is plugged in, the total output power is only P _MAX /2, which is only half of the total power provided by the device, which cannot make full use of the power provided by the device, and its power Some cannot be adjusted in real time, and there are certain limitations in the application. The control strategy proposed in this application is shown in Table 2, and the output power of the output ports is allocated in real time according to the connection and withdrawal states of the first output port and the second output port. When a single port is connected, the output power is P _MAX , and when two ports are connected at the same time, the output power of the two ports is P _MAX /2 respectively. The feature of this application solution is that the output power can be adjusted in real time. Compared with related technologies, the control strategy provided by the embodiment of this application can double the output power in a single-port application. In any application scenario, it can provide the maximum output power of the device. . The invention can solve the defect that the device power cannot be effectively utilized in the related art.

Table 1 Power allocation strategy of related technologies

Table 2 Multi-port power allocation strategy in the embodiment of this application

In the embodiment of this application, the digital parallel current sharing technology is adopted. From the control strategy, the shortcoming of the inability to flexibly adjust the output power in the related technology is solved. All power issues. The maximum output power of the device under single-port application is greatly improved.

In a specific implementation, the power adapter may also include more than two adapters, and each adapter may correspond to one output port. The specific control strategy may refer to the situation of the above two output ports, which will not be repeated here.

An embodiment of the present application also provides an electronic device, which may include a power adapter as described in FIG. 1 or FIG. 2 , for example, the electronic device may be a power bank or a charger. The electronic device can also be used to execute the charging control method shown in FIG. 3 or FIG. 4 .

An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables the computer to execute some or all of the steps of any method described in the above method embodiments , the above computer includes a power adapter. The power adapter may also include a memory for storing the above-mentioned computer program.

An embodiment of the present application also provides a computer program product, the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the computer to execute any one of the methods described in the above method embodiments. Some or all steps of the method. The computer program product may be a software installation package, and the above computer includes a power adapter.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Depending on the application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the above units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical or other forms.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the above-mentioned integrated units are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory. Several instructions are included to make a computer device (which may be a personal computer, server or network device, etc.) execute all or part of the steps of the above-mentioned methods in various embodiments of the present application. The aforementioned memory includes: various media that can store program codes such as U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, and the memory can include: a flash disk , Read-only memory (English: Read-Only Memory, referred to as: ROM), random access device (English: Random Access Memory, referred to as: RAM), magnetic disk or optical disc, etc.

The embodiments of the present application have been introduced in detail above, and specific examples have been used in this paper to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application; at the same time, for Those skilled in the art will have changes in specific implementation methods and application ranges based on the ideas of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

A power adapter, characterized in that the power adapter includes: a rectifier circuit, a first adapter, a second adapter, a first PD protocol chip, a second PD protocol chip, a shunt switch, a first output port, and a second output port ,in,

The rectification circuit is respectively connected to the first adapter and the second adapter; the first adapter is connected to the first PD protocol chip; the second adapter is connected to the second PD protocol chip; A PD protocol chip is connected to the first output port; the second PD protocol chip is connected to the second output port; the first adapter is connected to the second adapter through the shunt switch; the first PD protocol The chip is connected to the second PD protocol chip; the first PD protocol chip and the second PD protocol chip are both connected to the shunt switch;

The first PD protocol chip is used to detect the access of the first output port; when only the first output port is connected to the first electrical device, the working power of the first output port is set to total power;

The second PD protocol chip is used to detect the access of the second output port; when only the second output port is connected to the second electrical device, the working power of the second output port is set to the total power.
The power adapter according to claim 1, wherein the first adapter comprises: a first AC-DC control chip, a first main power switch circuit, a first high-frequency transformer, and a first rectification module, wherein the The first main power switch circuit is connected to the rectifier circuit, the first AC-DC control chip and the first high-frequency transformer, the first high-frequency transformer is connected to the first rectifier module, and the first The rectification module is connected to the first PD protocol chip, and the first PD protocol chip is connected to the first AC-DC control chip.
The power adapter according to claim 2, further comprising a first switch, wherein,

The first rectification module is connected to the first switch, and the first switch is connected to the first PD protocol chip and the first output port.
The power adapter according to claim 3, wherein the second adapter comprises: a second AC-DC control chip, a second main power switch circuit, a second high-frequency transformer, and a second rectification module, wherein the The second main power switch circuit is connected to the rectifier circuit, the second AC-DC control chip and the second high-frequency transformer, the second high-frequency transformer is connected to the second rectifier module, and the second The rectification module is connected to the second PD protocol chip, and the second PD protocol chip is connected to the second AC-DC control chip.
The power adapter according to claim 4, wherein the power adapter further comprises a second switch, wherein,

The second rectification module is connected to the second switch, and the second switch is connected to the second PD protocol chip and the second output port.
The power adapter according to claim 5, wherein the first rectification module is connected to the shunt switch, and the second rectification module is connected to the shunt switch.
The power adapter according to claim 6, wherein when only the first output port is connected to the first electric device;

The first PD protocol chip is configured to obtain a first charging parameter applied by the first electric device, where the first charging parameter includes a first charging voltage and a first charging current;

The first PD protocol chip is configured to notify the second PD protocol chip of the first charging parameter of the first electric device;

The second PD protocol chip is used to control the second AC-DC control chip to work with preset working parameters, the preset working parameters include working voltage and working current, the working voltage and the first The charging voltages are equal, and the operating current is determined by the first charging current, the first charging parameter corresponding to the first output port, and the second charging parameter corresponding to the second output port;

The shunt switch is used for shunting operation.
The power adapter according to claim 7, characterized in that,

The first adapter is configured to obtain a first current value output by the first adapter;

The second adapter is configured to obtain a second current value output by the second adapter;

The first PD protocol chip is used for a first comparison result between the first current value and the second current value; and when the first comparison result is not within a preset range, according to the first comparison result a comparison result to determine the target voltage adjustment parameter;

The first AC-DC control chip is configured to adjust the operating voltage of the first AC-DC control chip according to the target voltage adjustment parameter.
The power adapter according to claim 8, characterized in that,

The first adapter is configured to obtain a third current value of the first adapter;

The second adapter is configured to obtain a fourth current value of the second adapter;

The first PD protocol chip is configured to determine a second comparison result between the third current value and the fourth current value; and when the second comparison result is within the preset range, determine the shunt Successful operation.
The power adapter according to any one of claims 7-9, wherein when the first output port is connected to a first electric device and the second output port is connected to a second electric device;

The first PD protocol chip is used to obtain a first charging parameter corresponding to the first output port;

The second PD protocol chip is configured to obtain a second charging parameter corresponding to the second output port;

The first PD protocol chip is configured to determine the first working power of the first output port and the second working power of the second output port according to the first charging parameter and the second charging parameter, so The sum of the first working power and the second working power is the total power of the power adapter;

The first PD protocol chip is used to control the first output port to work at the first working power;

The second PD protocol chip is used to control the second output port to work at the second working power.
The power adapter according to claim 10, wherein the first working power of the first output port and the second output port are determined according to the first charging parameter and the second charging parameter. In terms of the second working power, the first PD protocol chip is specifically used for:

The first working power and the second working power are determined according to the following formula:

P 1 =P a *(S 1 /(S 1 +S 2 ))

P 2 =P a -P 1

Wherein, P a is the total power, S 1 is the first charging parameter, S 2 is the second charging parameter, P 1 is the first working power, and P 2 is the second working power.
A charging control method, characterized in that it is applied to the power adapter according to any one of claims 1-11, said method comprising:

Detecting the connection status of the first output port and the second output port;

When only the first output port is connected to the first electric device, the working power of the first output port is set as the total power;

When only the second output port is connected to the second electric device, the working power of the second output port is set as the total power.
The method according to claim 12, wherein when only the first output port is connected to the first electric device, the method further comprises:

Obtaining a first charging parameter applied by the first electric device through the first PD protocol chip, where the first charging parameter includes a first charging voltage and a first charging current;

Notifying the second PD protocol chip of the first charging parameter of the first powered device through the first PD protocol chip;

The second AC-DC control chip is controlled by the second PD protocol chip to work with preset working parameters, the preset working parameters include working voltage and working current, the working voltage and the first charging voltage equal, the operating current is determined by the first charging current, the first charging parameter corresponding to the first output port, and the second charging parameter corresponding to the second output port;

A shunt operation is performed through the shunt switch.
The method according to claim 13, further comprising:

acquiring a first current value of the first adapter and a second current value of the second adapter;

determining a first comparison result between the first current value and the second current value;

When the first comparison result is not within a preset range, determine a target voltage adjustment parameter according to the first comparison result;

and adjusting the operating voltage of the first AC-DC control chip according to the target voltage adjustment parameter.
The method according to claim 14, characterized in that the method further comprises:

Acquiring a third current value of the first adapter and a fourth current value of the second adapter;

determining a second comparison result between the third current value and the fourth current value;

When the second comparison result is within the preset range, it is determined that the diversion operation is successful.
The method according to any one of claims 12-15, wherein the method further comprises:

When the first output port is connected to a first electric device and the second output port is connected to a second electric device, acquiring a first charging parameter corresponding to the first output port and the second output port the corresponding second charging parameter;

Determine the first operating power of the first outlet and the second operating power of the second outlet according to the first charging parameter and the second charging parameter, and the first operating power and the second The sum of the working power is the total power of the power adapter;

controlling the first output port to work at the first working power;

and controlling the second output port to work with the second working power.
The method according to claim 16, wherein said determining the first operating power of the first outlet and the second operating power of the second outlet according to the first charging parameter and the second charging parameter 2. Working power, including:

The first working power and the second working power are determined according to the following formula:

P 1 =P a *(S 1 /(S 1 +S 2 ))

P 2 =P a -P 1

Wherein, P a is the total power, S 1 is the first charging parameter, S 2 is the second charging parameter, P 1 is the first working power, and P 2 is the second working power.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the method according to any one of claims 12-17 method steps.