# US 9,520,726 B2 · Auxiliary device having energy harvester and electronic device including auxiliary device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,726 B2 - Document ID: US9520726B2 - Status: Granted - Kind: B2 - Application number: 14/272,116 - Filed: 2014-05-07 - Published: 2015-04-02 - Granted: 2016-12-13 - Earliest claimed: 2013-09-27 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Jee-eun Yang; Jin-wook Lee; Sung-young Yun - Web page: https://patentgrep.com/patent/US9520726B2 ## CPC - H02J 7/70: characterised by the mechanical construction - H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries - H02N 2/186: {Vibration harvesters} - H10N 30/306: {Cantilevers} - H02J 2207/20: Charging or discharging characterised by the power electronics converter - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H02N: ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR - H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR ## Abstract An auxiliary device including an energy harvester and an electronic device including the auxiliary device are provided. The auxiliary device includes: a housing; a storage module which is moveable within the housing; and at least one piezoelectric transducer which disposed in the housing, such that a motion of the storage module causes a deformation of the piezoelectric transducer, thus generating electric energy. An end of the piezoelectric transducer may be fixedly connected to the storage module. ## Claims ### Claim 1 An auxiliary device connectable to an electronic device, the auxiliary device comprising: a housing; a storage module which is moveable within the housing; and at least one piezoelectric transducer which is disposed within the housing, such that a motion of the storage module causes the at least one piezoelectric transducer to be deformed and thereby generate electric energy, wherein the storage module is configured to store electric energy generated by the at least one piezoelectric transducer. ### Claim 2 (depends on 1) The auxiliary device of claim 1, wherein the at least one piezoelectric transducer is fixedly connected to the storage module. ### Claim 3 (depends on 1) The auxiliary device of claim 1, wherein the auxiliary device comprises an input device of the electronic device. ### Claim 4 (depends on 3) The auxiliary device of claim 3, wherein the auxiliary device comprises a stylus pen. ### Claim 5 (depends on 3) The auxiliary device of claim 3, wherein the auxiliary device is configured to be disposed inside the electronic device or to be attached to an outside of the electronic device. ### Claim 6 (depends on 1) The auxiliary device of claim 1, further comprising at least one of: a converter module which converts the electric energy generated by the at least one piezoelectric transducer and stores the converted electric energy in the storage module, and a charger circuit module which charges a battery of the electronic device with the electric energy stored in the storage module. ### Claim 7 (depends on 6) The auxiliary device of claim 6, wherein at least one of the converter module and the charger circuit module is connected to an end of the at least one piezoelectric transducer. ### Claim 8 (depends on 1) The auxiliary device of claim 1, wherein the piezoelectric transducer extends substantially parallel to a longitudinal direction of the housing, and the storage module is connected to an end of the at least one piezoelectric transducer. ### Claim 9 (depends on 8) The auxiliary device of claim 8, wherein when the storage module is moveable in a direction substantially perpendicular to the longitudinal direction of the housing, the at least one piezoelectric transducer is deformed. ### Claim 10 (depends on 8) The auxiliary device of claim 8, wherein the at least one piezoelectric transducer comprises a plurality of piezoelectric transducer portions, wherein each of the plurality of piezoelectric transducer portions has a polarization direction different from polarization directions of the others of the plurality of piezoelectric transducer portions. ### Claim 11 (depends on 1) The auxiliary device of claim 1, wherein the storage module extends substantially parallel with a longitudinal direction of the housing, and the at least one piezoelectric transducer is disposed between the storage module and the housing. ### Claim 12 (depends on 11) The auxiliary device of claim 11, wherein a first end of the at least one piezoelectric transducer is fixed, and a second end of the piezoelectric transducer is freely moveable. ### Claim 13 (depends on 12) The auxiliary device of claim 12, wherein a movement of the storage module in the direction perpendicular to the longitudinal direction of the housing causes the piezoelectric transducer to be deformed. ### Claim 14 An electronic system comprising: an electronic device, and an auxiliary device which is electrically connectable to the electronic device, the auxiliary device comprising: a housing; a storage module which is moveable within the housing; and at least one piezoelectric transducer which is disposed within the housing, such that a motion of the storage module causes the at least one piezoelectric transducer to be deformed and thereby generate electric energy, wherein the storage module is configured to store electric energy generated by the at least one piezoelectric transducer. ### Claim 15 (depends on 14) The electronic system of claim 14, wherein the at least one piezoelectric transducer is fixedly connected to the storage module. ### Claim 16 (depends on 14) The electronic system of claim 14, wherein the auxiliary device comprises an input device of the electronic device. ### Claim 17 (depends on 14) The electronic system of claim 14, wherein, upon connection of the auxiliary device to the electronic device and upon separation of the auxiliary device from the electronic device, the piezoelectric transducer is deformed and thereby generates electric energy due to a movement of the auxiliary device. ### Claim 18 (depends on 14) The electronic system of claim 14, wherein the auxiliary device further comprises at least one of: a converter module which converts the electric energy generated by the at least one piezoelectric transducer and stores the converted electric energy in the storage module, and a charger circuit module which charges a battery of the electronic device with the electric energy stored in the storage module. ### Claim 19 (depends on 15) The electronic system of claim 15, wherein the piezoelectric transducer extends substantially parallel to a longitudinal direction of the housing, and the storage module is connected at an end of the at least one piezoelectric transducer. ### Claim 20 (depends on 19) The electronic system of claim 19, wherein the at least one piezoelectric transducer comprises a plurality of piezoelectric transducer portions having different polarization directions. ### Claim 21 (depends on 14) The electronic system of claim 14, wherein the storage module extends substantially parallel to a longitudinal direction of the housing, and the at least one piezoelectric transducer is disposed between the storage module and the housing. ### Claim 22 (depends on 19) The electronic system of claim 19, wherein a first end of the at least one piezoelectric transducer is fixed, and a second end of the at least one piezoelectric transducer is freely moveable. ### Claim 23 An electronic device comprising a battery and a removable auxiliary element, wherein the auxiliary element comprises: a housing; a storage module which is moveable within the housing; a piezoelectric transducer disposed within the housing, such that a movement of the storage module causes a deformation of the piezoelectric transducer; a converter module configured to convert an electric energy generated by the piezoelectric transducer and to store the electric energy in the storage module; and a charger circuit configured to charge the battery with the electric energy stored in the storage module.