Control system for electrochromic device
First Claim
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1. An electrochromic system, comprising:
- an insulated glass unit including a first glass pane and an electrochromic device having light transmissivity that is variable in response to an electrical current, wherein an external surface of the first glass pane lies along a first plane;
a photovoltaic module electrically connected to the electrochromic device for providing the electrical current to the electrochromic device in response to light incident on the photovoltaic module, wherein;
the photovoltaic module is mounted to the external surface of the first glass pane and is adjacent to an exterior building frame-work;
the photovoltaic module has a light receiving surface that lies along a second plane that intersects the first plane and is oriented upward from a horizontal plane; and
an electronics module in communication with either of the photovoltaic module or the electrochromic device.
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Abstract
The present invention is directed to electrochromic systems comprising an electrochromic glazing or insulated glazing unit, a photovoltaic module for supplying power to the electrochromic glazing or IGU, and an electronics module in communication either the electrochromic glazing and/or photovoltaic module.
37 Citations
23 Claims
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1. An electrochromic system, comprising:
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an insulated glass unit including a first glass pane and an electrochromic device having light transmissivity that is variable in response to an electrical current, wherein an external surface of the first glass pane lies along a first plane; a photovoltaic module electrically connected to the electrochromic device for providing the electrical current to the electrochromic device in response to light incident on the photovoltaic module, wherein; the photovoltaic module is mounted to the external surface of the first glass pane and is adjacent to an exterior building frame-work; the photovoltaic module has a light receiving surface that lies along a second plane that intersects the first plane and is oriented upward from a horizontal plane; and an electronics module in communication with either of the photovoltaic module or the electrochromic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An electrochromic system, comprising:
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an electrochromic device having light transmissivity that is variable in response to an electrical current; a glass pane having a viewing surface that lies along a first plane; a photovoltaic module electrically connected to the electrochromic device for providing the electrical current to the electrochromic device response to light incident on the photovoltaic module, wherein; the photovoltaic module is mounted adjacent to the electrochromic device and overlies a surface of an exterior building frame-work, wherein the surface of the exterior building frame lies along a second plane that intersects the first plane; the photovoltaic module has a first surface, a second surface, and a light receiving surface, the first surface is parallel to the first plane and has a proximal end closer to the second surface and a distal end farther from the second surface; the second surface is parallel to the second plane and has a proximal end closer to the first surface and a distal end farther from the first surface; the light receiving surface extends between the distal ends of the first and second surfaces of the photovoltaic module; the light surface is farther from the proximal ends of the first and second surface surfaces than the distal ends of the first and second surfaces; and the light receiving surface lies along a single plane that intersects the first and second planes; and an electronics module in communication with either of the photovoltaic module or the electrochromic device, wherein the electronics module is in wireless communication with a building automation system. - View Dependent Claims (22, 23)
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Specification