Battery charging method and mobile terminal

• US 9,293,934 B2
• Filed: 04/08/2013
• Issued: 03/22/2016
• Est. Priority Date: 04/09/2012
• Status: Active Grant

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: Xu, Shunhai
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US13/858,749
• Publication Number:
  US 20130300347A1
• Time in Patent Office: 1,079 Days
• Field of Search: 320/106, 320/107, 320/162
• US Class Current: 1/1
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries

Abstract

Embodiments of the present invention provide a battery charging method, related to the field of electronic technologies and invented to shorten the charging time. The method includes: determining, by a mobile terminal, a specification parameter of a battery to be charged; determining, by the mobile terminal, a charging parameter corresponding to the specification parameter according to the determined specification parameter; and charging, by the mobile terminal, the battery to be charged according to the determined charging parameter. Embodiments of the present invention also provide a corresponding mobile terminal. The present invention is applicable to charging of a mobile terminal.

Claims

1. A mobile terminal, comprising:

a detector, configured to detect level values of a plurality of sampling points on a circuit board of the mobile terminal by analog/digital sampling, to obtain a combination of level values of sampling points, and to determine a specification parameter of a battery to be charged;

a processor, configured to determine a charging parameter corresponding to the specification parameter, the charging parameter determined according to the specification parameter determined by the detector; and

a charger, configured to charge the battery to be charged according to the charging parameter determined by the processor.

2. The mobile terminal according to claim 1, wherein the specification parameter of the battery comprises battery capacity and charging limiting voltage;

wherein the detector is configured to determine the battery capacity and/or charging limiting voltage of the battery to be charged; and

wherein the processor is configured to determine the charging parameter corresponding to the battery capacity and/or charging limiting voltage, according to the determined battery capacity and/or charging limiting voltage.

3. The mobile terminal according to claim 2, wherein the detector is configured to determine the specification parameter of the battery according to the obtained combination of level values and correspondence between level value combinations and battery specification parameters in a pre-stored sampled level truth table.

4. The mobile terminal according to claim 3, wherein the circuit board of the mobile terminal is arranged with at least one weld connected to a power supply, a back cover of the mobile terminal is arranged with a contact corresponding to the at least one weld, and wherein the detector is specifically configured to:

detect levels of analog/digital sampling points on the circuit board to obtain level values corresponding to the analog/digital sampling points on the circuit board, wherein a level value is a high level 1 when a weld of each of the analog/digital sampling points on the circuit board is connected through a corresponding contact on the back cover of the mobile terminal, and a level value is a low level 0 when a weld of each of the analog/digital sampling points on the circuit board is not connected through a corresponding contact on the back cover of the mobile terminal; and

obtain a combination of level values of the sampling points on the circuit board according to the level values obtained by the detection.

5. The mobile terminal according to claim 1, wherein the detector is further configured to:

determine a specification indication parameter of the battery; and

determine the specification parameter of the battery according to the determined specification indication parameter and correspondence between specification indication parameters and battery specification parameters in a pre-stored specification indication parameter table.

6. The mobile terminal according to claim 5, wherein the specification indication parameter is a slope of a voltage boost of the battery under a preset current in a unit time, wherein the slope of the voltage boost is equal to a numerical value of the voltage boost of the battery under the preset current in the unit time divided by the unit time;

and

the detector is configured to determine the specification parameter of the battery according to the slope of the voltage boost and correspondence between slopes of voltage boosts and battery specification parameters in a pre-stored voltage slope interval table, wherein the voltage slope interval table comprises slope intervals of voltage boosts corresponding to different battery specification parameters.

7. The mobile terminal according to claim 6, wherein the specification indication parameter is a voltage value of the battery at a specified moment and wherein the detector is configured to determine the specification parameter of the battery according to the voltage value and correspondence between voltage values and battery specification parameters in a pre-stored voltage table.

8. The mobile terminal according to claim 1, wherein the mobile terminal further comprises:

a memory, configured to store correspondence between specification parameters and charging parameters before the specification parameter of the battery is determined;

wherein the processor is configured determine the charging parameter corresponding to the specification parameter according to the specification parameter determined by the detector and the stored correspondence between specification parameters and charging parameters.

9. A battery charging method, wherein the method comprises:

detecting, by a mobile terminal, levels of analog/digital sampling points on a circuit board to obtain level values corresponding to the analog/digital sampling points on the circuit board, wherein the circuit board is arranged with at least one weld connected to a power supply, a back cover of the mobile terminal is arranged with a contact corresponding to the at least one weld, a level value is a high level 1 when a weld of each of the analog/digital sampling points on the circuit board is connected through a corresponding contact on the back cover of the mobile terminal, and a level value is a low level 0 when a weld of each of the analog/digital sampling points on the circuit board is not connected through a corresponding contact on the back cover of the mobile terminal;

obtaining, by the mobile terminal, a combination of level values of the sampling points on the circuit board according to the level values obtained by the detection;

determining, by the mobile terminal according to the obtained combination of level values and correspondence between level value combinations and battery specification parameters in a pre-stored sampled level truth table, the specification parameter of the battery to be charged;

determining, by the mobile terminal, a charging parameter corresponding to the specification parameter, the charging parameter determined according to the determined specification parameter; and

charging, by the mobile terminal, the battery to be charged according to the determined charging parameter.