Protective circuit
First Claim
1. A protective circuit for electrical connection of solar cells of a solar cell module, with protective means for providing a current bypass for a shaded solar cell, wherein the protective circuit has a controlled electronic circuit arrangement as the protective means;
- wherein the protective means comprises at least one transistor and at least one DC/DC converter which is connected parallel thereto and which is connected to a trigger circuit via an energy storage device;
wherein the solar cells are arranged in a plurality of series-connected solar cell strings, and wherein a respective protective means is provided for each solar cell string, the protective means each comprising a parallel connected transistor that is connected via a respective gate to the trigger circuit that is assigned to at least two of the solar cell strings.
2 Assignments
0 Petitions
Accused Products
Abstract
A protective circuit for electrical connection to solar cells of a solar cell module is provided with a protective circuit that has a controlled electronic circuit arrangement. In this way, only minimal heating of the protective circuit for electrical connection of solar cells of a solar cell module occurs in operation. The controlled electronic circuit arrangement can have a trigger circuit and a switching arrangement which can be triggered by the trigger circuit, the switching arrangement being connected parallel to at least one solar cell, and in the case of shading of the solar cells, is at least temporarily activated by the trigger circuit so that a current bypass for the shaded solar cell is achieved.
154 Citations
11 Claims
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1. A protective circuit for electrical connection of solar cells of a solar cell module, with protective means for providing a current bypass for a shaded solar cell, wherein the protective circuit has a controlled electronic circuit arrangement as the protective means;
- wherein the protective means comprises at least one transistor and at least one DC/DC converter which is connected parallel thereto and which is connected to a trigger circuit via an energy storage device;
wherein the solar cells are arranged in a plurality of series-connected solar cell strings, and wherein a respective protective means is provided for each solar cell string, the protective means each comprising a parallel connected transistor that is connected via a respective gate to the trigger circuit that is assigned to at least two of the solar cell strings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- wherein the protective means comprises at least one transistor and at least one DC/DC converter which is connected parallel thereto and which is connected to a trigger circuit via an energy storage device;
Specification