# US 2014/0191719 A1 · Electric power charge and discharge system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191719 A1 - Document ID: US20140191719A1 - Status: Published application - Kind: A1 - Application number: 14/208,844 - Filed: 2014-03-13 - Published: 2014-07-10 - Earliest claimed: 2006-10-31 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Semiconductor Energy Laboratory Co., Ltd. - Inventors: Shuhei NAGATSUKA; Akihiro KIMURA - Web page: https://patentgrep.com/patent/US20140191719A1 ## CPC - H01M 10/44: Methods for charging or discharging (circuits for charging H02J7/00) - H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries - H02J 7/585: {Sequential battery discharge in systems with a plurality of batteries} - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - H02J 50/10: using inductive coupling - H02J 50/27: characterised by the type of receiving antennas, e.g. rectennas - H02J 50/402: {the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas} - H04B 1/3883: Arrangements for mounting batteries or battery chargers - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04B: TRANSMISSION - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An electric power charge and discharge system for an electronic device having a battery, by which the electronic device can be used for a long period of time. In a wireless communication device including a wireless driving portion including a first battery and a wireless charging portion including a second battery, the first battery is charged by electric power from a fixed power supply and the second battery is charged by using electromagnetic waves existing in an external space. Further, the first battery and the second battery are discharged alternately, and during a period in which the first battery is discharged, the second battery is charged. ## Claims ### Claim 1 (canceled) ### Claim 2 A device comprising: an antenna; a wireless charge controlling circuit electrically connected to the antenna; a first battery electrically connected to the wireless charge controlling circuit; and a connector electrically connected to the first battery, wherein the wireless charge controlling circuit is configured to transform a wireless electric power received by the antenna into a voltage capable of charging the first battery, and wherein the first battery is configured to be charged by electric power from the antenna. ### Claim 3 (depends on 2) The device according to claim 2, further comprising a second battery electrically connected to the connector. ### Claim 4 (depends on 2) The device according to claim 2, further comprising an inner circuit electrically connected to the first battery. ### Claim 5 (depends on 4) The device according to claim 4, wherein the inner circuit is electrically connected to the antenna. ### Claim 6 (depends on 2) The device according to claim 2, wherein the first battery is configured to be charged by electric power form an external power supply source through a cable. ### Claim 7 (depends on 2) The device according to claim 2, further comprising a charge switching circuit electrically connected to the wireless charge controlling circuit, the first battery, and the connector. ### Claim 8 (depends on 2) The device according to claim 2, further comprising a power supply switching circuit electrically connected to the first battery. ### Claim 9 (depends on 2) The device according to claim 2, wherein the first battery is any one of a lithium battery, a lithium polymer battery, and a lithium ion battery. ### Claim 10 A device comprising: an antenna; a wireless charge controlling circuit electrically connected to the antenna; a first battery electrically connected to the wireless charge controlling circuit; and a connector electrically connected to the first battery, wherein the wireless charge controlling circuit is configured to transform a wireless electric power received by the antenna into a voltage capable of charging the first battery, wherein the first battery is configured to be charged by electric power from the antenna, and wherein the connector is configured to supply electric power from an external power supply through a cable. ### Claim 11 (depends on 10) The device according to claim 10, further comprising a second battery electrically connected to the connector. ### Claim 12 (depends on 10) The device according to claim 10, further comprising an inner circuit electrically connected to the first battery. ### Claim 13 (depends on 12) The device according to claim 12, wherein the inner circuit is electrically connected to the antenna. ### Claim 14 (depends on 10) The device according to claim 10, wherein the first battery is configured to be charged by electric power form an external power supply source through a cable. ### Claim 15 (depends on 10) The device according to claim 10, further comprising a charge switching circuit electrically connected to the wireless charge controlling circuit, the first battery, and the connector. ### Claim 16 (depends on 10) The device according to claim 10, further comprising a power supply switching circuit electrically connected to the first battery. ### Claim 17 (depends on 10) The device according to claim 10, wherein the first battery is any one of a lithium battery, a lithium polymer battery, and a lithium ion battery.