Method and device for ascertaining required charging time

Patent metadata

Field	Value
Publication number	US-2019257887-A1
Application number	US-201916402563-A
Country	US
Kind code	A1
Filing date	May 3, 2019
Priority date	Jul 16, 2013
Publication date	Aug 22, 2019
Grant date	—

Abstract

A method and a device are provided for ascertaining the time required to fully charging a battery of the device. The device ascertains the type of power supply being used when charging the device by ascertaining the time required to fully charge the device based on a historical charging speed and an empirical charging speed corresponding to the power supply's type. Using the method and device provided by the present disclosure can ascertain the required charging time with more accuracy.

First claim

What is claimed is:

1 . An apparatus for determining a charging time of a battery, the apparatus comprising:
a non-transitory storage medium configured to store instructions; and processing circuitry in communication with the non-transitory storage medium, and configured to execute the instructions stored on the non-transitory storage medium to: detect a type of power supply used to charge the battery; determine, for the type of power supply, a historical charging speed for charging a predetermined unit of electricity in the battery; determine, for the type of power supply, an empirical charging speed for charging the predetermined unit of electricity in the battery; determine, for the type of power supply, an empirical time to charge the unit of electricity based on the empirical charging speed; determine, for the type of power supply, a historical time to charge the unit of electricity based on the historical charging speed; obtain an estimated time to charge the unit of electricity based on a weighted average of the empirical time and the historical time; sum the weighted average of the empirical time and the historical time to determine a time to fully charge the battery; and control charging of the battery according to the determined time to fully charge the battery.

2 . The apparatus of claim 1 , wherein for each unit of electricity to be charged, the processing circuitry is configured to obtain a default empirical time corresponding to the type of power supply, and assign the default empirical time as the empirical time to charge the unit of electricity.

3 . The apparatus of claim 1 , wherein for each unit of electricity to be charged, the processing circuitry is configured to:
determine an interval in which a percentage of remaining electricity of the battery should fall; assign the empirical time corresponding to the interval as the empirical time to charge the unit of electricity; partition the interval between 0%˜100% into a plurality of contiguous intervals in advance based on the type of power supply; and set a respective empirical time for each interval.

4 . The apparatus of claim 1 , wherein for each unit of electricity to be charged, the processing circuitry is configured to:
determine an average of samples corresponding to the unit of electricity and the type of power supply; assign the average as the historical time to charge the unit of electricity; store an actual time taken to charge the unit of electricity as a sample corresponding to the unit of electricity; and store the type of power supply corresponding to the sample during the process of charging.

5 . The apparatus of claim 4 , wherein the processing circuitry is further configured to:
determine there are existing stored samples corresponding to the unit of electricity and the type of power supply; delete a first one of the stored samples; and replace the deleted first one of the stored samples with the actual time taken to charge the unit of electricity.

6 . The apparatus of claim 4 , wherein the processing circuitry is further configured to:
determine a lack of stored samples corresponding to the unit of electricity and the type of power supply; and store the actual time taken to charge the unit of electricity as a sample corresponding to the unit of electricity and the type of power supply.

7 . The apparatus of claim 1 , wherein the processing circuitry comprises:
a first processing module configured to detect the type of power supply used to charge the battery; and a second processing module configured to control charging of the battery.

8 . A method for determining a charging time of a battery, the method comprising:
detecting a type of power supply used to charge the battery using processing circuitry; determining, for the type of power supply, a historical charging speed for charging a predetermined unit of electricity in the battery; determining, for the type of power supply, an empirical charging speed for charging the predetermined unit of electricity in the battery; determining, for the type of power supply, an empirical time to charge the unit of electricity based on the empirical charging speed; determining, for the type of power supply, a historical time to charge the unit of electricity based on the historical charging speed; obtaining an estimated time to charge the unit of electricity based on a weighted average of the empirical time and the historical time; summing the weighted average of the empirical time and the historical time to determine a time to fully charge the battery; and controlling charging of the battery according to the determined time to fully charge the battery using the processing circuitry.

9 . The method of claim 8 , wherein for each unit of electricity to be charged, the method further comprises:
obtaining a default empirical time corresponding to the type of power supply; and assigning the default empirical time as the empirical time to charge the unit of electricity.

10 . The method of claim 8 , wherein for each unit of electricity to be charged, the method further comprises:
determining an interval in which a percentage of remaining electricity of the battery should fall; assigning the empirical time corresponding to the interval as the empirical time to charge the unit of electricity; partitioning the interval between 0%˜100% into a plurality of contiguous intervals in advance based on the type of power supply; and setting a respective empirical time for each interval.

11 . The method of claim 8 , wherein for each unit of electricity to be charged, the method further comprises:
determining an average of samples corresponding to the unit of electricity and the type of power supply; assigning the average as the historical time to charge the unit of electricity; storing an actual time taken to charge the unit of electricity as a sample corresponding to the unit of electricity; and storing the type of power supply corresponding to the sample during the process of charging.

12 . The method of claim 8 , further comprising:
determining there are existing stored samples corresponding to the unit of electricity and the type of power supply; deleting a first one of the stored samples; and replacing the deleted first one of the stored samples with the actual time taken to charge the unit of electricity.

13 . The method of claim 8 , further comprising:
determining a lack of stored samples corresponding to the unit of electricity and the type of power supply; and storing the actual time taken to charge the unit of electricity as a sample corresponding to the unit of electricity and the type of power supply.

14 . An apparatus for determining a charging time of a battery, the apparatus comprising:
a non-transitory storage medium configured to store instructions; and processing circuitry in communication with the non-transitory storage medium, and configured to execute the instructions stored on the non-transitory storage medium to: detect a type of power supply used to charge the battery; obtain, for the type of power supply, an estimated time to charge a unit of electricity in the battery based on a weighted average of an empirical time to charge the unit of electricity and a historical time to charge the unit of electricity; sum the weighted average of the empirical time and the historical time; determine a time to fully charge the battery based on the sum of the weighted average of the empirical time and the historical time; and control charging of the battery according to the determined time to fully charge the bat

Assignees

• Tencent Tech Shenzhen Co Ltd

Inventors

• Yang Lang
• Luo Junming

Classifications

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/825 Primary

  Detection of fully charged condition · CPC title

• H01M10/4257

  Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries · CPC title

• H02J2007/005

  Electricity · mapped topic

• H02J7/0021

  Electricity · mapped topic