US 10,097,032 B2Granted

Mobile terminal and charging method

AssigneesHisense Mobile Communications Technology Co., Ltd., Hisense USA Corporation, Hisense International Co., Ltd.

InventorsErmeng Hu, Chunqian Li, Wenjuan Du

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Abstract

The application disclose a mobile terminal, a method for charging by a power source adapter for charging directly and a method for charging a mobile terminal, where firstly the power adaptor for charging directly is configured to communicate wirelessly with the mobile terminal, and then a strategy to identity the type of charging is designed in the mobile terminal dependent upon differently configured communication pins of a different charging device, so that the mobile terminal identifies automatically the type of the external device. Also a specialized rapid charging mode is designed for the power adaptor for charging directly, the battery of the mobile terminal being charged routinely is charged directly at large current by charging voltage output by the power adaptor for charging directly, and the volt value of the charging voltage is adjusted dynamically according to the varying voltage of the battery.

Claims19

Dependent claims

A mobile terminal, comprising:

a battery configured to store electrical energy;
a USB interface configured to engage with an external device;
a wireless communication module configured to transmit and receive a wireless signal;
a microprocessor configured to, upon detecting the external device inserted into the USB interface:
control the wireless communication module to search for devices that can communicate wirelessly with the wireless communication module;
when the searched devices include the external device connected with the USB interface, determine whether the external device is a direct charging power source adaptor;
when the external device is a direct charging power source adaptor, connect the USB interface wirelessly with the power source adaptor;
when the USB interface and the power source adaptor are connected successfully, exchange data with the power source adaptor via the wireless communication module, and detect a voltage of the battery;
and
when the voltage of the battery lies in a range delimited by preset direct charging thresholds, control a charging voltage output by the power source adaptor to charge the battery, and determine from a current voltage of the battery a value of the charging voltage output by the power source adaptor, wherein the range delimited by the preset direct charging thresholds corresponds with a voltage range of the battery corresponding to a constant-current charging phase in a dedicated charging port (DCP) charging mode.

7 more elements

A method for charging a mobile terminal, the method comprising:

detecting, by the mobile terminal, an external device inserted into a USB interface of the mobile terminal;
controlling a wireless communication module of the mobile terminal, and searching via the wireless communication module for devices that can communicate wirelessly with the wireless communication module;
when the searched devices include the external device connected with the USB interface, determining whether the external device is a direct charging power source adaptor;
and
when the external device is a direct charging power source adaptor, connecting the USB interface wirelessly with the power source adaptor;
when the USB interface and the power source adaptor are connected successfully, exchanging, by the mobile terminal, data with the power source adaptor via the wireless communication module;
and
detecting, by the mobile terminal, a voltage of a battery of the mobile terminal, and when the voltage of the battery lies in a range delimited by preset direct charging thresholds, directly transmitting a charging voltage output by the power source adaptor to the battery to charge the battery directly, and determining a value of the charging voltage output by the power source adaptor from a current voltage of the battery, wherein the range delimited by the preset direct charging thresholds corresponds with a voltage range of the battery corresponding to a constant-current charging phase in a dedicated charging port (DCP) charging mode.

5 more elements

A method for charging using a direct charging power source adaptor, the method comprising:

connecting, by the direct charging power source adaptor, with a mobile terminal, after connecting with an external AC input power source or upon detecting that a charging interface of the power source adaptor is connected with the mobile terminal;
controlling a wireless communication module of the power source adaptor, and waiting for a wireless connection with the mobile terminal;
and
after the power source and the mobile terminal are connected successfully, exchanging data with the mobile terminal via the wireless communication module, and determining from a current voltage of a battery of the mobile terminal a value of a charging voltage output by the power source adaptor.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/068,883Filed 14 Mar 2016
Priority: CN 2015 1 04733965 Aug 2015
Published: US 2017/0040817 A19 Feb 2017
Granted: 9 Oct 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H02J 7/443
Characterised by the exchange of charge or discharge related data: using passive battery identification means, e.g. resistors or capacitors
H02J 7/04
For charging batteries from AC mains by converters: regulation of charging current or voltage
H02J 7/485
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: with provisions for charging different types of…
H02J 7/96
Regulation of charging or discharging current or voltage: in response to battery voltage