# US 10,320,231 B2 · Wireless powered electrochromic windows

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- Number: US 10,320,231 B2
- Document ID: US10320231B2
- Status: Granted
- Kind: B2
- Application number: 14/962,975
- Filed: 2015-12-08
- Published: 2016-03-31
- Granted: 2019-06-11
- Earliest claimed: 2009-12-22
- Assignees: View, Inc.
- Applicants: View, Inc.
- Inventors: Robert T. Rozbicki
- Web page: https://patentgrep.com/patent/US10320231B2

## CPC

- H02J 50/10: using inductive coupling
- E06B 9/24: Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00)
- G02F 1/153: Constructional details
- G02F 1/163: Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
- H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)}
- H02J 50/12: of the resonant type
- H02J 50/20: using microwaves or radio frequency waves
- H02J 50/30: using light, e.g. lasers
- H02J 50/50: using additional energy repeaters between transmitting devices and receiving devices
- E06B 2009/2464: {featuring transparency control by applying voltage, e.g. LCD, electrochromic panels}
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00)
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## 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

### Claim 1

A system comprising:
an electrochromic window including an electrochromic device; and
a photovoltaic power supply configured to generate power for the electrochromic window;
wherein the electrochromic device is configured to be controlled to change between a bleached state and a darkened state by a window controller via wireless communication, and wherein the window controller communicates with the electrochromic device via a network.

### Claim 2 (depends on 1)

The system of claim 1, further comprising a battery configured to deliver power to the electrochromic device.

### Claim 3 (depends on 2)

The system of claim 2, wherein the photovoltaic power supply is configured to charge the battery.

### Claim 4 (depends on 3)

The system of claim 3, wherein the window controller is further configured to control charging of the battery.

### Claim 5 (depends on 1)

The system of claim 1, wherein the electrochromic window is in the form of an insulated glass unit.

### Claim 6 (depends on 3)

The system of claim 3, wherein the photovoltaic power supply is in or near the insulated glass unit.

### Claim 7 (depends on 1)

The system of claim 1, wherein the photovoltaic power supply is in the electrochromic window.

### Claim 8 (depends on 1)

The system of claim 1, further comprising a receiver configured to convert wireless power transmissions received from a wirelessly transmitted power supply to electrical energy.

### Claim 9 (depends on 8)

The system of claim 8, further comprising a battery configured to deliver power to the electrochromic device, wherein both the photovoltaic power supply and the wirelessly transmitted power supply are configured to deliver power to the battery.

### Claim 10 (depends on 8)

The system of claim 8, wherein the system has no external wiring for supplying power to the system.

### Claim 11 (depends on 8)

The system of claim 8, wherein the wirelessly transmitted power supply transmits power via magnetic induction, radio frequency, microwave energy or laser.

### Claim 12 (depends on 1)

The system of claim 1, further comprising one or more sensors.

### Claim 13 (depends on 12)

The system of claim 12, wherein the one or more sensors comprise one or more of a motion sensor, a light sensor, a heat sensor and a moisture sensor.

### Claim 14 (depends on 1)

The system of claim 1, wherein the electrochromic device comprising a solid state and inorganic stack materials disposed on a glass substrate.

### Claim 15 (depends on 8)

The system of claim 8, wherein wirelessly transmitted power supply transmits power via a power transmission network.

### Claim 16 (depends on 1)

The system of claim 1, wherein the electrochromic window is a component of an automated heat and/or energy management system of a building.

### Claim 17 (depends on 8)

The system of claim 8, wherein the window controller comprises the wireless power transmission receiver.

### Claim 18 (depends on 1)

The system of claim 1, wherein the window controller comprises a microprocessor configured to regulate a potential applied to the electrochromic device.

### Claim 19 (depends on 18)

The system of claim 18, wherein the microprocessor, alone or combined with other microprocessors, controls recharging the battery or wirelessly communicating with a remote control.

### Claim 20 (depends on 19)

The system of claim 19, wherein the remote control is a hand held device or an automated heat and/or energy management system.

### Claim 21 (depends on 1)

The system of claim 1, wherein the window controller controls the electrochromic device depending on input received via wireless communication.

### Claim 22 (depends on 21)

The system of claim 21, wherein the input is from an automated energy management system of the building.

### Claim 23 (depends on 22)

The system of claim 22, wherein the electrochromic window is a component of the automated energy management system.

### Claim 24

A method of powering an electrochromic window, the method comprising:
generating power for the electrochromic window using a photovoltaic power supply; and
controlling an optical transition between a bleached state and a darkened state in the electrochromic device via wireless communication from a window controller, wherein the window controller communicates with the electrochromic device via a network.

### Claim 25 (depends on 24)

The method of claim 24, wherein the optical transition is controlled based on input from an automated energy management system of the building with the electrochromic window.

### Claim 26 (depends on 24)

The method of claim 24, further comprising delivering power to the electrochromic device from a battery in the electrochromic window.

### Claim 27 (depends on 26)

The method of claim 26, further comprising charging the battery using power generated by the photovoltaic power supply.

### Claim 28 (depends on 26)

The method of claim 26, further comprising controlling the charging of the battery using power generated by the photovoltaic power supply.

### Claim 29 (depends on 24)

The method of claim 24, wherein the electrochromic window is in the form of an insulated glass unit.

### Claim 30 (depends on 24)

The method of claim 24, further comprising receiving wireless power transmissions at a receiver from a wirelessly transmitted power supply and converting the wireless power transmissions into an electrical energy used to power the optical transition in the electrochromic device.

### Claim 31 (depends on 30)

The method of claim 30, further comprising charging the battery using power from both the photovoltaic power supply and the wirelessly transmitted power supply.

### Claim 32 (depends on 30)

The method of claim 30, wherein the wireless power transmissions are transmitted from the wirelessly transmitted power supply via magnetic induction, radio frequency, microwave energy or laser.

### Claim 33 (depends on 24)

The method of claim 24, wherein the electrochromic device comprises a solid-state electrochromic stack materials disposed on a glass substrate.