Speed Charge, LLC

Freewire Technologies, Inc.

Ravi Lavu

Jamshed Nabizada

Ajay Somepalli

Anton Cwik

Richard J Steele

Nicholas Seroff

Tabish Shibly

In order to ensure safe and reliable disconnection of charging cables from electric vehicles during occurrence of error conditions preventing normal disengagement of such charging cables, the systems and methods disclosed herein provide a vehicle charging system including a system controller configured to present via a display a user-selectable manual disconnection option when the vehicle is not receiving a charging current, receive an indication of a user selection of the manual disconnection option, and control a charge controller of the vehicle charging system to reset in order to terminate any charging session and to disengage the charging cable. In some embodiments, the charge controller may be configured or controlled to send a session termination signal to a vehicle charge controller of the vehicle either before resetting or as part of a startup process.

Disengagement of electric vehicle charging cable

Electric vehicle (EV) charging stations for: (i) preventing damage to a battery of an EV charging station, and (ii) maintaining fast charging of the battery of the EV charging station. An EV charging station controller determines if an input power to the EV charging station is above an input power threshold value, and, if so, determines if a charge level of the battery of the EV charging station is below a low charge threshold level. If the charge level is below the low charge threshold level, a portion of the input power may be reserved for the battery of the EV charging station.

Dynamic output control of vehicle chargers with respective internal batteries

A vehicle charging apparatus is described herein, which may include a battery pack comprising a plurality of individual batteries, a power input port receiving electrical power at a first wattage, an AC-to-DC conversion circuit configured to provide DC power to charge groups of batteries in the plurality of individual batteries, a power conversion circuit configured to condition a DC output of at least one group of batteries to provide a charging current output to a vehicle via a coupling, and a processing circuit configured to control the power conversion circuit to provide the charging current at a second wattage greater than the first wattage. The first wattage may be actively or inherently limited to a level less than the second wattage in order to provide fast DC charging with a limited power input.

High-availability low-impact vehicle charger

Growing community of inventors

Fremont, CA, United States of America

Ravi Lavu