# US 9,517,353 B2 · Photovoltaic generation device and system and application thereof to an implantable medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,353 B2 - Document ID: US9517353B2 - Status: Granted - Kind: B2 - Application number: 14/770,227 - Filed: 2014-02-20 - Published: 2016-03-24 - Granted: 2016-12-13 - Earliest claimed: 2013-02-25 - Assignees: Commissariat A L'energie Atomique Et Aux Energies Alternatives - Applicants: Commissariat A L'energie Atomique Et Aux Energies Alternatives - Inventors: Nicolas Karst; Simon Perraud - Web page: https://patentgrep.com/patent/US9517353B2 ## CPC - A61N 1/3787: {from an external energy source} - H02J 7/35: with light sensitive cells - H10F 55/00: Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto - H10F 77/126: {comprising only Group I-III-VI chalcopyrite materials, e.g. CuInSe2, CuGaSe2 or CuInGaSe2 [CIGS]} - H10W 90/00: Package configurations - Y02E 10/50: Photovoltaic [PV] energy - Y02E 10/541: CuInSe2 material PV cells - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A photovoltaic device including a CIGS photovoltaic module having a so-called top surface, intended to be exposed to light radiation; and a light emitting diode emitting light at a wavelength of less than 600 nm and transparent to radiation in the near infrared, attached to the top surface of the photovoltaic module. A photovoltaic generation system having: at least one such photovoltaic device; a system of switches to selectively connect the photovoltaic module to the light emitting diode or to a terminal supplying an external load; and a control circuit for controlling the system of switches. An electrical system having: such a photovoltaic generation system; a battery connected to the supply terminal; and at least one electronic circuit connected to the battery in order to be powered. An implantable medical device having such an electronic system. ## Claims ### Claim 1 A photovoltaic device comprising: a CIGS photovoltaic module having a surface, called the upper surface, intended to be exposed to luminous radiation; and a light-emitting diode having a luminous emission at a wavelength shorter than 600 nm, and transparent to radiation in the near infrared, fastened to said upper surface of the photovoltaic module. ### Claim 2 (depends on 1) The photovoltaic device as claimed in claim 1, in which said light-emitting diode has a luminous emission at a wavelength corresponding to a photonic energy higher than a bandgap width of a buffer layer of said photovoltaic module. ### Claim 3 (depends on 1) The photovoltaic device as claimed in claim 1, in which said CIGS photovoltaic module is suitable for generating an electrical current when its upper surface is illuminated by near infrared radiation to which said light-emitting diode is transparent. ### Claim 4 (depends on 1) The photovoltaic device as claimed in claim 1, in which said photovoltaic module comprises a plurality of photovoltaic cells connected in series. ### Claim 5 (depends on 4) The photovoltaic device as claimed in claim 4, in which said photovoltaic cells connected in series are produced in the form of a thin-film stack deposited on a common substrate. ### Claim 6 (depends on 1) The photovoltaic device as claimed in claim 1, wherein the light-emitting diode has a luminous emission at a wavelength shorter than or equal to 443 nm. ### Claim 7 (depends on 1) The photovoltaic device as claimed in claim 1, wherein the light-emitting diode has a luminous emission at a wavelength comprised between 250 and 400 nm. ### Claim 8 A photovoltaic generation system comprising: a CIGS photovoltaic module having a surface, called the upper surface, intended to be exposed to luminous radiation; and a light-emitting diode having a luminous emission at a wavelength shorter than 600 nm, and transparent to radiation in the near infrared, arranged so as to be able to illuminate said photovoltaic module; a system of switches for selectively connecting said photovoltaic module to said light-emitting diode or to a supply terminal of an exterior load; and a control circuit for controlling said system of switches. ### Claim 9 (depends on 8) The photovoltaic generation system as claimed in claim 8, in which said photovoltaic module and said light-emitting diode form a photovoltaic device comprising: a CIGS photovoltaic module having a surface, called the upper surface, intended to be exposed to luminous radiation; and a light-emitting diode having a luminous emission at a wavelength shorter than 600 nm, and transparent to radiation in the near infrared, fastened to said upper surface of the photovoltaic module. ### Claim 10 (depends on 8) The photovoltaic generation system as claimed in claim 8, in which said control circuit is suitable for: measuring an electrical power generated by said photovoltaic module; and controlling said switching system depending on the measured power. ### Claim 11 (depends on 10) The photovoltaic generation system as claimed in claim 10, in which said control circuit is suitable for controlling said switching system such that said photovoltaic module powers said light-emitting diode when said measured power is below a preset threshold, then powers an exterior load connected to said supply terminal. ### Claim 12 (depends on 8) An electronic system comprising: a photovoltaic generation system as claimed in claim 8; a battery connected to said supply terminal so as to be recharged by said photovoltaic generation system; and at least one electronic circuit connected to said battery so as to be powered. ### Claim 13 (depends on 12) An implantable medical device comprising an electronic system as claimed in claim 12.