US 12,230,456 B2
Covering for a solar cell with electrochromic filter
Maximilian Fleischer, Hohenkirchen (DE); Roland Pohle, Herdweg (DE); Elfriede Simon, Munich (DE); and Oliver von Sicard, Munich (DE)
Assigned to Siemens Energy Global GmbH & Co. KG, Bayern (DE)
Appl. No. 17/791,723
Filed by Siemens Energy Global GmbH & Co. KG, Bayern (DE)
PCT Filed Jan. 11, 2021, PCT No. PCT/EP2021/050326
§ 371(c)(1), (2) Date Jul. 8, 2022,
PCT Pub. No. WO2021/151634, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20154804 (EP), filed on Jan. 31, 2020.
Prior Publication US 2023/0031986 A1, Feb. 2, 2023
Int. Cl. H01G 9/20 (2006.01); G02F 1/153 (2006.01); G02F 1/163 (2006.01); H10K 30/30 (2023.01); H10K 30/57 (2023.01); H10K 30/87 (2023.01); H10K 30/88 (2023.01)
CPC H01G 9/209 (2013.01) [G02F 1/1533 (2013.01); G02F 1/163 (2013.01); H01G 9/2009 (2013.01); H01G 9/2072 (2013.01); H10K 30/30 (2023.02); H10K 30/57 (2023.02); H10K 30/87 (2023.02); H10K 30/88 (2023.02); G02F 2001/1536 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An arrangement, comprising:
a solar cell,
a cover, wherein the cover covers the solar cell at least on that side intended for irradiation with electromagnetic radiation from the sun, wherein the cover has an electrochromic layer, and
a control unit for control of the electrochromic layer, wherein the control unit is configured to control transmittance of the electrochromic layer for electromagnetic radiation in a defined wavelength range by application of an electrical voltage to the electrochromic layer such that a temperature of the solar cell is maintained below a temperature limit,
wherein the solar cell includes an absorber for absorption of the electromagnetic radiation from the sun and the absorber has a perovskite structure, and
wherein the arrangement has at least one further solar cell, and the solar cell and the at least one further solar cell form a tandem solar cell;
wherein the control unit is configured to at least one of:
reduce or essentially suppress transmission of photons having an energy of more than a predetermined value above an activation energy of the solar cell and simultaneously facilitate transmission of photons having an energy within the activation energy of the solar cell, and
reduce or essentially suppress transmission of photons having an energy of more than a predetermined value below an activation energy of the solar cell and simultaneously facilitate transmission of photons having an energy within the activation energy of the solar cell;
wherein the arrangement is configured to determine the temperature of the solar cell by impedance spectroscopy.