IP Library › Granted Patent US 12683548
Granted Patent B2
US 12683548 · App. 17/788,894 · Granted Jul 14, 2026

Decoupling of a perovskite solar cell in darkness

Inventors: Maximilian Fleischer (Hohenkirchen, DE); Roland Pohle (Herdweg, DE); Elfriede Simon (Munich, DE); Oliver von Sicard (Munich, DE)
Assignee: Siemens Energy Global GmbH & Co. KG
H02S50/00H02S50/10H10F19/31H10K30/57H10K71/421H10K85/50H10K39/10
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Quick Facts
Patent No.
US 12683548
App. No.
17/788,894
Granted
Jul 14, 2026
Kind
B2
Abstract

A method for operating a photovoltaic module in which the photovoltaic module has at least one perovskite solar cell. The method includes temporarily operating the photovoltaic module at the maximum power point by a control device connected to the photovoltaic module, wherein the drawing of electrical energy is interrupted when the irradiance of electromagnetic radiation impinging on the photovoltaic module falls below a predetermined threshold value. A photovoltaic device includes a photovoltaic module having at least one perovskite solar cell, and a control device connected to the photovoltaic module.

Claims (26)

1 . A method comprising:

operating, at least temporarily, a photovoltaic device comprising a photovoltaic module at a maximum power point by a maximum power point tracking regulation device connected to the photovoltaic module, with the photovoltaic module having at least one perovskite solar cell,

wherein a withdrawal of electrical energy is interrupted when an irradiance of an electromagnetic radiation impinging on the photovoltaic module falls below a predetermined threshold value,

wherein, when the irradiance falls below the predetermined threshold value, the photovoltaic module is electrically decoupled from the maximum power point tracking regulation device by a transistor, and

wherein the predetermined threshold value is in a range of between 2 W/m 2 and 20 W/m 2 ,

wherein, when the irradiance exceeds the predetermined threshold value, the photovoltaic module is electrically recoupled to the maximum power point tracking regulation device by the transistor.

2 . The method as claimed in claim 1 ,

wherein, when the irradiance falls below the predetermined threshold value, the photovoltaic module is short-circuited.

3 . The method as claimed in claim 1 ,

wherein a photocurrent generated by the photovoltaic module is used as a measure of the irradiance of the electromagnetic radiation impinging on the photovoltaic module.

4 . The method as claimed in claim 1 ,

wherein the irradiance of the electromagnetic radiation impinging on the photovoltaic module is determined by impedance spectroscopy at one or more perovskite solar cells of the photovoltaic module.

5 . The method as claimed in claim 1 ,

wherein the photovoltaic module has an additional photoelectric cell, and the irradiance of the electromagnetic radiation impinging on the photovoltaic module is determined by the additional photoelectric cell.

6 . The method as claimed in claim 5 ,

wherein the irradiance is determined by a photocurrent generated by the additional photoelectric cell.

7 . The method as claimed in claim 1 ,

wherein the irradiance of the electromagnetic radiation impinging on the photovoltaic module is estimated on the basis of meteorological data.

8 . The method as claimed in claim 1 ,

wherein the maximum power point tracking regulation device is an inverter, or a microinverter, assigned to the photovoltaic module.

9 . The method as claimed in claim 1 ,

wherein the maximum power point tracking regulation device is a power optimizer assigned to the photovoltaic module.

10 . The method as claimed in claim 1 ,

wherein the predetermined threshold value is in the range of between 5 W/m 2 and 15 W/m 2 .

11 . The method as claimed in claim 1 ,

wherein the predetermined threshold value is 10 W/m 2 .