Wi-Charge Ltd.

Zohar Levin

Ortal Alpert

Lior Golan

Omer Nahmias

Alexander Slepoy

Yan Rosh

Ori Refael Mor

Ran Sagi

Eyal Conforti

Yoav Biderman

Ilanit Shapir

Hen Markovitch

A wireless power transmitter for powering a remote receiver using a laser beam, the laser beam generator having current inputs and outputs electrically insulated from their surroundings, and each including a separate controlled gated switch. The transmitter has a beam adjustment element for switching the beam between a collimated beam for power transfer, and a more divergent beam for scanning, which is performed by a beam deflector. A detection system detect the presence of a receiver, and is used to ensure accurate beam impingement on the power receiving element. A controller senses when the beam is centered on the power receiving element, switches from the divergent scanning beam to the collimated beam, and instructs the beam generator to raise the power of the laser beam to a level for powering the receiver. The gate controller operates at a higher voltage than the other system control circuits.

System for location and charging of wireless power receivers

A system for ensuring the integrity of the enclosure of a wireless power transmitter. The enclosure of the transmitter comprises a window in order to allow a high-power beam to exit the transmitter. The window is equipped with an area which reflects at least a portion of the beam, and directs the reflected beam onto a detector. Thus the system can ascertain whether the window is undamaged, since if the detector is receiving a satisfactory portion of the beam, then it is indicative of an undamaged window. This advantageously prevents dangerous beam generated damage which may be caused if the exit window of the transmitter is damaged. The laser beam is preferably circularly polarized before exiting the transmitter to prevent dangerous laser damage caused by the reflections of the maximum of the P or S polarization components, which may occur with linearly polarized beams.

Safe enclosures for wireless power supply

A safety supervision system for wireless power transmission, comprising a transmitter having an optical beam generator with safe states for transmitting power to receivers that convert the beam into electrical power. The system control unit stores previously known signatures categorized by predetermined parameters associated with one or more unwanted situations, stores data from sensors, compares this stored data to the signatures, and executes one or more responses based on this comparison. The system may comprise transmitter and/or receiver malfunction detection systems adapted to monitor the transmitter and receiver control units and to cause the optical beam generator to switch to a safe state upon detection of a transmitter or receiver control unit malfunction, and may further comprise a hazard detection system preventing human exposure to beam intensity above a predefined safe level.

Flexible management system for optical wireless power supply

A system for transmitting wireless power from multiple sources to multiple receivers, in which the safety of the system is maintained in spite of the possibility that two beams may intersect in the transmission space, thereby generating power or power density levels which exceed those at which the safety mechanisms of the system were designed to operate. The paths of the beams are known from the transmission positions and directions, and from the positions and orientations of the receivers, as measured by positioning devices on them. When an intersection, or near intersection of beams is determined, the system is triggered to reduce the safety risk by attenuating or turning off, or by diverting, one or more of the beams. In addition, since a reflected beam's path may not be readily discernable, the system can ascertain if one of the beams has undergone a reflection, by looking for displayed mirror images.

Multiple beam wireless power transmission system

A wireless power transmitter system for directing a high energy beam towards receivers fitted with identifying signs. One type of the identifying signs may have asymmetric shape properties, such that their mirror image cannot be matched to their actual shape, even after the image is rotated, tilted or otherwise geometrically manipulated. The system can thus determine whether a detected image of a sign is a true image received directly from said receiver, or is received after the imaged beam has undergone a reflection between the receiver and the transmission system. In the latter case, the system can prevent high power transmission from being directed to a location other than a real receiver, which could be a safety hazard. Other types of identifying signs may be located in or on the borders of different zones of a transmission space, to identify zones where transmission may be allowed or prohibited.

Growing community of inventors

Rehovot, Israel

Zohar Levin