US-20260128602-A1 - CHARGING CONTROL METHOD AND CHARGING DEVICE

US20260128602A1US 20260128602 A1US20260128602 A1US 20260128602A1US-20260128602-A1

Abstract

The present application provides a charging control method and a charging device. The charging control method comprises: acquiring a maximum charging power for protocol handshaking with a target device, and determining a target power supply mode for the target device; and charging, when the target power supply mode is a first protecting mode, the target device with a first charging power and a second charging power alternately; wherein the first charging power is less than or equal to the maximum charging power; and the second charging power is less than the first charging power. By providing a charging mode of charging a device with a high power and a low power alternately, a user is allowed to select the charging mode under a particular usage scenario to meet the demand for battery protection.

Inventors

Haifan Peng

Assignees

FaceSec Japan Co., Ltd.

Dates

Publication Date: 20260507
Application Date: 20241122
Priority Date: 20241105

Claims (10)

1 . A charging control method, comprising: acquiring a maximum charging power for protocol handshaking with a target device, and determining a target power supply mode for the target device; and charging, when the target power supply mode is a first protecting mode, the target device with a first charging power and a second charging power alternately; wherein the first charging power is less than or equal to the maximum charging power; and the second charging power is less than the first charging power.
2 . The method according to claim 1 , further comprising: charging, when the target power supply mode is a default charging mode, the target device with the continuous maximum charging power; and charging, when the target power supply mode is a second protecting mode, the target device with a continuous third charging power; wherein the third charging power is less than the maximum charging power.
3 . The method according to claim 2 , wherein an initial value of the target power supply mode is the default charging mode; and the step of determining the target power supply mode for the target device comprises: setting the target power supply mode as the first protecting mode upon receiving a first selection instruction; setting the target power supply mode as the second protecting mode upon receiving a second selection instruction; setting the target power supply mode as the default charging mode upon receiving a first cancellation instruction for the first selection instruction; and setting the target power supply mode as the default charging mode upon receiving a second cancellation instruction for the second selection instruction.
4 . The method according to claim 2 , wherein the step of determining the target power supply mode for the target device comprises: acquiring, when the target device is being charged, an interface output power of a connector, and recording, within a preset duration, a duration in which the interface output power is less than or equal to a minimum output power; and setting, when the duration is greater than the preset duration, the target power supply mode as the default power supply mode.
5 . The method according to claim 2 , further comprising: making, when the target power supply mode is the default charging mode, a first interactive feedback; making, when the target power supply mode is the first protecting mode, a second interactive feedback; and making, when the target power supply mode is the second protecting mode, a third interactive feedback.
6 . A charging device, comprising: a charging protocol controller, a boost-buck regulator and a connector; wherein: the boost-buck regulator is respectively connected with an input power source, the charging protocol controller and the connector, and is configured to adjust and output to a target device through the connector, voltage and current of the input power source under the control of the charging protocol controller; the charging protocol controller is connected with the target device through the connector, and is configured to acquire a maximum charging power for protocol handshaking with the target device through the connector, and determine a target power supply mode for the target device; and the charging protocol controller is configured to control, when the target power supply mode is a first protecting mode, the boost-buck regulator to charge the target device with a first charging power and a second charging power alternately; wherein the first charging power is less than or equal to the maximum charging power; and the second charging power is less than the first charging power.
7 . The device according to claim 6 , wherein the charging protocol controller is configured to control, when the target power supply mode is a default charging mode, the boost-buck regulator to charge the target device with the continuous maximum charging power; and the charging protocol controller is configured to control, when the target power supply mode is a second protecting mode, the boost-buck regulator to charge the target device with a continuous third charging power; wherein the third charging power is less than the maximum charging power.
8 . The device according to claim 7 , wherein an initial value of the target power supply mode is the default charging mode; the device further comprises an interactive unit and a microprocessor; the microprocessor is respectively connected with the interactive unit and the charging protocol controller; the microprocessor is configured to send, upon receiving a first selection instruction from the interactive unit, a first protection notice to the charging protocol controller, and the charging protocol controller is configured to set the target power supply mode as a first protecting mode; the microprocessor is configured to send, upon receiving a second selection instruction from the interactive unit, a second protection notice to the charging protocol controller, and the charging protocol controller is configured to set the target power supply mode as a second protecting mode; the microprocessor is configured to send, upon receiving a first cancellation instruction for the first selection instruction from the interactive unit, a first cancellation notice to the charging protocol controller, and the charging protocol controller is configured to set the target power supply mode as the default charging mode; and the microprocessor is configured to send, upon receiving a second cancellation instruction for the second selection instruction from the interactive unit, a second cancellation notice to the charging protocol controller, and the charging protocol controller is configured to set the target power supply mode as the default charging mode.
9 . The device according to claim 8 , wherein the charging protocol controller is configured to acquire and send to the microprocessor, when the target device is being charged, an interface output power of the connector, and the microprocessor is configured to record, within a preset duration, a duration in which the interface output power is less than or equal to a minimum output power; and the microprocessor is configured to send, when the duration is greater than the preset duration, a default power supply notice to the charging protocol controller, and the charging protocol controller is configured to set the target power supply mode as the default power supply mode.
10 . The device according to claim 8 , wherein the device further comprises an interactive feedback unit; the microprocessor is connected with the interactive feedback unit; the microprocessor is configured to control, when the target power supply mode is the default charging mode, the interactive feedback unit to make a first interactive feedback; the microprocessor is configured to control, when the target power supply mode is the first protecting mode, the interactive feedback unit to make a second interactive feedback; and the microprocessor is configured to control, when the target power supply mode is the second protecting mode, the interactive feedback unit to make a third interactive feedback.

Description

CROSS REFERENCE TO RELATED APPLICATIONS The present application claims the benefit of Chinese Patent Application No. 202411572578.4 filed on Nov. 5, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD The present application relates to the technical field of charging control, and in particular to a charging control method and a charging device. BACKGROUND At present, consumer electronics (e.g., smart phones, tablets and laptops) are usually powered using lithium batteries. In order to meet the user's demand for fast charging, various standard organizations and manufacturers have promoted a plurality of charging protocols, such as a USB Power Delivery (USB PD) protocol formulated by a USB Implementers Forum (USB-IF) organization, and a Quick Charge (QC) protocol and a Pump Express (PE) protocol formulated by other manufacturers. These protocols tend to increase the charging voltage and current to achieve higher charging power, thereby shortening the charging time and improving the user's experience. At present, the USB PD protocol has evolved to version 3.1, and its maximum allowable charging power has reached 240 W (48V/5A), which is significantly improved compared with the 5V/1.5A in the specification of BC 1.2. However, a significant problem brought by fast charging with a high power is that more heat can be generated by the lithium battery while being charged, and the excessive heat generation will accelerate the aging of the lithium battery, shorten the service life thereof, and potentially lead to a waste of raw materials and environmental pollution. In order to deal with this problem, many manufacturers have employed, while designing a charging system, such a compromise solution that: if the battery power is low, a fast charging will be carried out with a highest power for protocol handshake, and if the battery power reaches a certain level, a gradual reduction will be carried out to the charging voltage and current. While this method reduces the heat of the battery to a certain extent, it cannot provide the battery protection maximally, since the continuous high power state in the early stage can still result in unnecessary temperature rise. SUMMARY In view of the above-mentioned problems, the present application is proposed in order to provide a charging control method and a charging device for overcoming or at least partially solving the problems, including: a charging control method, includes: acquiring a maximum charging power for protocol handshaking with a target device, and determining a target power supply mode for the target device; and charging, when the target power supply mode is a first protecting mode, the target device with a first charging power and a second charging power alternately; where the first charging power is less than or equal to the maximum charging power; and the second charging power is less than the first charging power. Preferably, the method further includes: charging, when the target power supply mode is a default charging mode, the target device with the continuous maximum charging power; andcharging, when the target power supply mode is a second protecting mode, the target device with a continuous third charging power; where the third charging power is less than the maximum charging power. Preferably, an initial value of the target power supply mode is the default charging mode; and determining the target power supply mode for the target device includes: setting the target power supply mode as the first protecting mode upon receiving a first selection instruction;setting the target power supply mode as the second protecting mode upon receiving a second selection instruction;setting the target power supply mode as the default charging mode upon receiving a first cancellation instruction for the first selection instruction; andsetting the target power supply mode as the default charging mode upon receiving a second cancellation instruction for the second selection instruction. Preferably, determining the target power supply mode for the target device includes: acquiring, when the target device is being charged, an interface output power of a connector, and recording, within a preset duration, a duration in which the interface output power is less than or equal to a minimum output power; andsetting, when the duration is greater than the preset duration, the target power supply mode as the default power supply mode. Preferably, the method further includes: making, when the target power supply mode is the default charging mode, a first interactive feedback;making, when the target power supply mode is the first protecting mode, a second interactive feedback; andmaking, when the target power supply mode is the second protecting mode, a third interactive feedback. A charging device, includes: a charging protocol controller, a boost-buck regulator and a connector; where: the boost-buck regulator is respectively connected with