Constant power charging method and device for mobile terminal

Patent metadata

Field	Value
Publication number	US-11444477-B2
Application number	US-201916698032-A
Country	US
Kind code	B2
Filing date	Nov 27, 2019
Priority date	Aug 30, 2019
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

A charging method for a mobile terminal includes charging a rechargeable battery of the mobile terminal with a constant power, which further includes: charging the rechargeable battery of the mobile terminal with a first constant power determined based on an average charging power supported by the mobile terminal, when a maximum output power of a charger is greater than or equal to the average charging power supported by the mobile terminal; and charging the rechargeable battery of the mobile terminal with a second constant power determined based on the maximum output power of the charger, when the maximum output power of the charger is less than the average charging power supported by the mobile terminal.

First claim

What is claimed is:

1. A charging method for a mobile terminal, comprising:
charging a rechargeable battery of the mobile terminal with a constant power,
wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal with a first constant power determined based on an average charging power supported by the mobile terminal, when a maximum output power of a charger is greater than or equal to the average charging power supported by the mobile terminal, wherein the first constant power is equal to or smaller than the average charging power supported by the mobile terminal; and
charging the rechargeable battery of the mobile terminal with a second constant power determined based on the maximum output power of the charger, when the maximum output power of the charger is less than the average charging power supported by the mobile terminal.

2. The charging method according to claim 1 , wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal in such a manner that a charging voltage is increased gradually and a charging current is reduced gradually,
wherein a product of the charging voltage and the charging current at a same time is a constant value or in a constant range.

3. The charging method according to claim 1 , wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal with the constant power during a target time period of a charging process,
wherein the target time period is any one of a time period for replacing a constant-current charging stage, a time period before the constant-current charging stage, and a time period after the constant-current charging stage.

4. A charging adapter, comprising a charging circuit, wherein the charging circuit is configured to implement the charging method for the mobile terminal according to claim 1 .

5. A non-transitory computer-readable storage medium having computer programs stored thereon, wherein when the computer programs are executed by a processor, the processor is caused to implement the charging method for the mobile terminal according to claim 1 .

6. A mobile terminal, comprising:
a processor and a memory,
wherein the memory stores computer programs, and the processor is configured to execute the computer programs to cause charging a rechargeable battery of the mobile terminal with a constant power,
wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal with a first constant power determined based on an average charging power supported by the mobile terminal, when a maximum output power of a charger is greater than or equal to the average charging power supported by the mobile terminal, wherein the first constant power is equal to or smaller than the average charging power supported by the mobile terminal; and
charging the rechargeable battery of the mobile terminal with a second constant power determined based on the maximum output power of the charger, when the maximum output power of the charger is less than the average charging power supported by the mobile terminal.

7. The mobile terminal according to claim 6 , wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal in such a manner that a charging voltage is increased gradually and a charging current is reduced gradually,
wherein a product of the charging voltage and the charging current at a same time is a constant value or in a constant range.

8. The mobile terminal according to claim 6 , wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal with the constant power during a target time period of a charging process,
wherein the target time period is any one of a time period for replacing a constant-current charging stage, a time period before the constant-current charging stage, and a time period after the constant-current charging stage.

9. A chip, comprising:
a programmable logic circuit and program instructions, wherein the chip is configured to, when operating, cause charging a rechargeable battery of a mobile terminal with a constant power,
wherein the charging a rechargeable battery of the mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal with a first constant power determined based on an average charging power supported by the mobile terminal, when a maximum output power of a charger is greater than or equal to the average charging power supported by the mobile terminal, wherein the first constant power is equal to or smaller than the average charging power supported by the mobile terminal; and
charging the rechargeable battery of the mobile terminal with a second constant power determined based on the maximum output power of the charger, when the maximum output power of the charger is less than the average charging power supported by the mobile terminal.

10. The chip according to claim 9 , wherein the charging a rechargeable battery of a mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal in such a manner that a charging voltage is increased gradually and a charging current is reduced gradually,
wherein a product of the charging voltage and the charging current at a same time is a constant value or in a constant range.

11. The chip according to claim 9 , wherein the charging a rechargeable battery of a mobile terminal with a constant power comprises:
charging the rechargeable battery of the mobile terminal with the constant power during a target time period of a charging process,
wherein the target time period is any one of a time period for replacing a constant-current charging stage, a time period before the constant-current charging stage, and a time period after the constant-current charging stage.

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Sun Changyu
• Wang Yanteng

Classifications

• H02J7/933 Primary

  the cycle being controlled or terminated in response to electric parameters · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J7/40

  characterised by the exchange of charge or discharge related data · CPC title

• H02J7/90

  Regulation of charging or discharging current or voltage · CPC title

• H02J7/92 Primary

  with prioritisation of loads or sources · CPC title