# US 2018/0323627 A1 · Mobile terminal and battery charging method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323627 A1 - Document ID: US20180323627A1 - Status: Published application - Kind: A1 - Application number: 16/020,426 - Filed: 2018-06-27 - Published: 2018-11-08 - Earliest claimed: 2013-09-16 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sookyoung KIM; Byoungyong HONG; Jaehwan PARK; Younghan KIM; Sangwoo HA - Web page: https://patentgrep.com/patent/US20180323627A1 ## CPC - H02J 7/70: characterised by the mechanical construction - H02J 7/751: {concerning the insertion or the connection of the batteries} - H02J 7/963: {in response to battery voltage gradient} - H04W 52/0209: {in terminal devices} - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 2105/44: Portable electronic devices - Y02D 30/70: in wireless communication networks - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A mobile terminal including a terminal body comprising a battery; an adaptor connecter formed at one side surface of the terminal body and to which a power supply adaptor is connected; a plurality of charging units configured to charge the battery between the adaptor connecter and the battery; and a controller configured to generate a control signal for controlling each of the plurality of charging units. Further, any one of the plurality of charging units is configured to detect a level of a voltage of the battery, compare the voltage of the battery with first to third threshold voltages, and output first battery voltage data to the controller when the voltage of the battery is lower than the first threshold voltage, output second battery voltage data to the controller when the voltage of the battery is equal to or larger than the first threshold voltage and is lower than the second threshold voltage, and output third battery voltage data to the controller when the voltage of the battery is equal to or larger than the second threshold voltage and is lower than the third threshold voltage. ## Claims ### Claim 1 A mobile terminal, comprising: a terminal body comprising a battery; an adaptor connecter formed at one side surface of the terminal body and to which a power supply adaptor is connected; a plurality of charging units configured to charge the battery between the adaptor connecter and the battery; and a controller configured to generate a control signal for controlling each of the plurality of charging units, wherein any one of the plurality of charging units is configured to: detect a level of a voltage of the battery, compare the voltage of the battery with first to third threshold voltages, and output first battery voltage data to the controller when the voltage of the battery is lower than the first threshold voltage, output second battery voltage data to the controller when the voltage of the battery is equal to or larger than the first threshold voltage and is lower than the second threshold voltage, and output third battery voltage data to the controller when the voltage of the battery is equal to or larger than the second threshold voltage and is lower than the third threshold voltage. ### Claim 2 (depends on 1) The mobile terminal of claim 1, wherein the controller is configured to: determine the level of the detected voltage of the battery based on the first to the third battery voltage data, and charge the battery using the entire of the plurality of charging units when receiving the second battery voltage data and charge the battery using any one of the plurality of charging units when receiving the first and third battery voltage data. ### Claim 3 (depends on 2) The mobile terminal of claim 2, wherein the controller is further configured to: charge the battery with a first current using any one of the plurality of charging units based on the first battery voltage data, charge the battery with a second current higher than the first current using the entire of the plurality of charging units based on the second battery voltage data, and charge the battery while slowly lowering the second current using any one of the plurality of charging units based on the third battery voltage data. ### Claim 4 (depends on 3) The mobile terminal of claim 3, wherein the second current is a direct current. ### Claim 5 (depends on 3) The mobile terminal of claim 3, wherein a current supplied to the battery based on the third battery voltage data is inversely proportional to the voltage of the battery. ### Claim 6 (depends on 5) The mobile terminal of claim 5, wherein the controller is configured to: generate a first interrupt signal to deactivate the remaining charging units when the battery is charged based on the first battery voltage data and the third voltage data, and generate a second interrupt signal to activate the remaining charging units when the battery is charged based on the second battery voltage data. ### Claim 7 (depends on 3) The mobile terminal of claim 3, wherein when the battery is charged with the second current, a first charging unit of the plurality of charging units detects a maximum value of a current that can receive from the power supply adaptor connected to the adaptor connecter, and output adaptor current data corresponding to the maximum value to the controller. ### Claim 8 (depends on 7) The mobile terminal of claim 7, wherein the controller is further configured to calculate a charge current of the first charging unit and a charge current of a second charging unit within a maximum value of a current of adapter current data supplied from the power supply adaptor. ### Claim 9 (depends on 1) The mobile terminal of claim 1, wherein the controller is configured to: determine whether the power supply adaptor connected to the adaptor connecter 202 is a TA (travel adapter) or a USB terminal, detect a level of the voltage of the battery if the power supply adaptor connected to the adaptor connecter is the TA, and control battery charge according to the detected voltage level of the battery. ### Claim 10 (depends on 1) The mobile terminal of claim 1, wherein the controller is configured to charge the battery using only one of the plurality of charging units if the USB terminal is connected to the adaptor connecter through a USB cable. ### Claim 11 (depends on 1) The mobile terminal of claim 1, wherein the plurality of charging units are connected in parallel between the adaptor connecter and the battery. ### Claim 12 A mobile terminal charging method comprising a terminal body comprising a battery; an adaptor connecter formed at one side surface of the terminal body and to which a power supply adaptor is connected; and a plurality of charging units that charge the battery between the adaptor connecter and the battery, wherein the plurality of charging units are connected in parallel between the adaptor connecter and the battery, the method comprising: detecting a level of a voltage of the battery; comparing the voltage of the battery with first to third threshold voltages; and outputting first battery voltage data to the controller when the voltage of the battery is lower than the first threshold voltage, outputting second battery voltage data to the controller when the voltage of the battery is equal to or larger than the first threshold voltage and is lower than the second threshold voltage, and outputting third battery voltage data to the controller when the voltage of the battery is equal to or larger than the second threshold voltage and is lower than the third threshold voltage. ### Claim 13 (depends on 12) The method of claim 12, wherein the method further comprises: determining the level of the detected voltage of the battery based on the first to the third battery voltage data; and charging the battery using the entire of the plurality of charging units when receiving the second battery voltage data and charging the battery using any one of the plurality of charging units when receiving the first and third battery voltage data. ### Claim 14 (depends on 12) The method of claim 12, wherein the method further comprises: charging the battery with a first current using any one of the plurality of charging units based on the first battery voltage data; charging the battery with a second current higher than the first current using the entire of the plurality of charging units based on the second battery voltage data; and charging the battery while slowly lowering the second current using any one of the plurality of charging units based on the third battery voltage data. ### Claim 15 (depends on 14) The method of claim 14, wherein the second current is a direct current and wherein a current supplied to the battery based on the third battery voltage data is inversely proportional to the voltage of the battery. ### Claim 16 (depends on 15) The method of claim 15, wherein the method further comprises: generating a first interrupt signal to deactivate the remaining charging units when the battery is charged based on the first battery voltage data and the third voltage data; and generating a second interrupt signal to activate the remaining charging units when the battery is charged based on the second battery voltage data. ### Claim 17 (depends on 14) The method of claim 14, wherein when the battery is charged with the second current, the method further comprises: controlling a first charging unit of the plurality of charging units to detect a maximum value of a current that can receive from the power supply adaptor connected to the adaptor connecter; and outputting adaptor current data corresponding to the maximum value to the controller. ### Claim 18 (depends on 17) The method of claim 17, wherein the method further comprises calculating a charge current of the first charging unit and a charge current of a second charging unit within a maximum value of a current of adapter current data supplied from the power supply adaptor. ### Claim 19 (depends on 12) The method of claim 12, wherein the method further comprises: determining whether the power supply adaptor connected to the adaptor connecter 202 is a TA (travel adapter) or a USB terminal, detecting a level of the voltage of the battery if the power supply adaptor connected to the adaptor connecter is the TA, and controlling battery charge according to the detected voltage level of the battery. ### Claim 20 (depends on 12) The method of claim 12, wherein the method further comprises charging the battery using only one of the plurality of charging units if the USB terminal is connected to the adaptor connecter through a USB cable.