Wireless powered electrochromic windows

• US 9,664,976 B2
• Filed: 06/09/2015
• Issued: 05/30/2017
• Est. Priority Date: 12/22/2009
• Status: Active Grant

• Current Assignee: View Incorporated
• Original Assignee: View Incorporated
• Inventors: Rozbicki, Robert T.
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Pham, Duc M
• Application Number:
  US14/735,016
• Publication Number:
  US 20150270724A1
• Time in Patent Office: 721 Days
• Field of Search: 307104
• CPC Class Codes: E06B 2009/2464 featuring transparency control by applying voltage, e.g. LCD, electrochromic panels
• CPC Class Codes: E06B 9/24 Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blindsoperating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00
• CPC Class Codes: G02F 1/153 Constructional details
• CPC Class Codes: G02F 1/163 Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/30 using light, e.g. lasers
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence

Abstract

Electrochromic windows powered by wireless power transmission are described, particularly, the combination of low-defectivity, highly-reliable solid state electrochromic windows with wireless power transmission. Wireless power transmission networks which incorporate electrochromic windows are described.

Claims

1. A system comprising:

an electrochromic window;

a window controller; and

a wireless power transmission receiver that is a component of the window controller, the wireless power transmission receiver configured to convert wireless power transmissions from a wireless power transmission source to electrical energy used to power an optical transition of the electrochromic window between a bleached state and a darkened state, wherein the wireless power transmission source transmits wireless power via radio frequency, microwave, or magnetic induction.

2. The system of claim 1, wherein the electrochromic window is in the form of an insulated glass unit having a spacer and a seal between two panes, and wherein the wireless power transmission source is near the insulated glass unit.

3. The system of claim 2, wherein the insulated glass unit is in a frame and wherein the wireless power transmission receiver is in the frame.

4. The system of claim 2, wherein the wireless power transmission receiver is proximate the spacer of the insulated glass unit.

5. The system of claim 4, wherein the wireless power transmission receiver is housed in the seal of the insulated glass unit.

6. The system of claim 1, further comprising a battery, wherein electrical energy produced by the wireless power transmission receiver is used to charge the battery.

7. The system of claim 6, wherein the battery is used to power the optical transition of the electrochromic window.

8. The system of claim 7, wherein the wireless power transmission source transmits power via a wireless power transmission network.

9. The system of claim 1, wherein the electrochromic window comprises a solid state and inorganic electrochromic device.

10. The system of claim 1, wherein the window controller is controlled via a wireless communication.

11. The system of claim 10, wherein the wireless communication is from an energy management system.

12. A wireless power transmission network comprising:

a wireless power transmission source;

a plurality of electrochromic windows in electrical communication via wires; and

a wireless power transmission receiver configured to convert wireless power transmissions from the wireless power transmission source to electrical energy used to power an optical transition of each electrochromic window of the plurality of electrochromic windows.

13. The wireless power transmission network of claim 12, wherein the wireless power transmission source transmits wireless power via radio frequency, microwave or magnetic induction.

14. The wireless power transmission network of claim 12, wherein the wireless power transmission receiver is associated with one of the plurality of electrochromic windows and the remaining electrochromic windows of the plurality of electrochromic windows receive power via said wires.

15. The wireless power transmission network of claim 14, wherein the remaining electrochromic windows of the plurality of electrochromic windows are connected in a series.

16. The wireless power transmission network of claim 12, further comprising one or more power nodes configured to relay wireless power from the wireless power transmission source to the wireless power transmission receiver.

17. The wireless power transmission network of claim 12, wherein each of the plurality of electrochromic windows is in the form of an insulated glass unit having a spacer and a seal between two panes, and where the wireless power transmission source is near one electrochromic window of the plurality of electrochromic windows.

18. The wireless power transmission network of claim 14, wherein the wireless power transmission receiver is in a frame having the electrochromic window.

19. The wireless power transmission network of claim 17, wherein the wireless power transmission receiver is proximate the spacer of the insulated glass unit of said one electrochromic window.

20. The wireless power transmission network of claim 17, wherein the wireless power transmission receiver is housed in the seal of the insulated glass unit of said one electrochromic window.

21. The wireless power transmission network of claim 12, wherein the functions of the plurality of electrochromic windows are controlled via wireless communication.

22. The wireless power transmission network of claim 12, wherein the functions of the plurality of electrochromic windows are controlled by an automated energy management system.

23. The wireless power transmission network of claim 12, wherein the wireless power transmissions from the wireless power transmission source transmits wireless power via radio frequency.

24. The wireless power transmission network of claim 12, wherein the wireless power transmissions from the wireless power transmission source transmits wireless power via magnetic induction.

25. The wireless power transmission network of claim 21, wherein the functions of the plurality of electrochromic windows are controlled by an automated energy management system.