Abstract: A overcharge-aware electrochromic device driver for preventing overcharge of an electrochromic device is described. One driver applies a constant supply current to an electrochromic device from a power supply. The driver determines an amount of charge as a function of time and current supplied to the electrochromic device. The driver determines whether the amount of charge reaches an overcharge limit before a sense voltage reaches a first sense voltage limit. Responsive to the amount of charge reaching the overcharge limit, the driver sets the sense voltage as a second sense voltage limit that is lower than the first sense voltage limit, ceases the constant supply current, and applies one of a variable voltage or a variable current to the electrochromic device from the power supply to maintain the sense voltage at the second sense voltage limit.

Abstract: A system includes a gateway having a memory, and a processing device coupled to the memory. The processing device is to identify a first subset of a data stream associated with a smart window system. The first subset of the data stream includes sensor data that has changed more than a threshold amount. Responsive to identifying the first subset of the data stream, the processing device is to transmit the first subset of the data stream to a server device. The server device is to generate one or more instructions based on the first subset of the data stream. Responsive to receiving the one or more instructions from the server device, the processing device is to cause one or more electrochromic devices to be controlled based on the one or more instructions.

Abstract: Process for forming a multi-layer electrochromic structure, the process comprising depositing a film of a liquid mixture onto a surface of a substrate, and treating the deposited film to form an anodic electrochromic layer, the liquid mixture comprising a continuous phase and a dispersed phase, the dispersed phase comprising metal oxide particles, metal hydroxide particles, metal alkoxide particles, metal alkoxide oligomers, gels or particles, or a combination thereof having a number average size of at least 5 nm.

Abstract: A method of manufacturing a thin film is provided. The method includes providing a plurality of crystalline cathodic electrochromic particles comprising an alkali metal oxide material, size-reducing the crystalline cathodic electrochromic particles by grinding to produce crystalline cathodic electrochromic nanostructures, providing a substrate, and coating the crystalline cathodic electrochromic nanostructures onto the substrate to produce a thin film, wherein the thin film is an electrochromic thin film.

Abstract: Process for forming a multi-layer electrochromic structure, the process comprising depositing a film of a liquid mixture onto a surface of a substrate, and treating the deposited film to form an anodic electrochromic layer, the liquid mixture comprising a continuous phase and a dispersed phase, the dispersed phase comprising metal oxide particles, metal alkoxide particles, metal alkoxide oligomers, gels or particles, or a combination thereof having a number average size of at least 5 nm.

Abstract: A method of controlling tint for a plurality of electrochromic devices, performed by a control system, is provided. The method includes receiving a request to change tint level of a plurality of electrochromic devices, and consulting transfer functions for tint level relative to drive for each of the plurality of electrochromic devices, wherein at least one of the plurality of electrochromic devices has a transfer function differing from at least one other of the plurality of electrochromic devices. The method includes driving each of the plurality of electrochromic devices in accordance with the transfer functions, so as to coordinate tint level or rate of change of tint level across the plurality of electrochromic devices.

Abstract: An electrochromic device comprises a first transparent substrate and a first electrically conductive layer arranged on a surface of the first transparent substrate, wherein the first electrically conductive layer is patterned with curved scribed line segments. The curved scribed line segments comprise a longitudinal direction and a transverse direction, and the distance from each curved scribed line segment to a line along the longitudinal direction of each curved scribed line segment varies nonmonotonically as a function of position along the curved scribed line segment.