Green Charge Networks LLC

Stephen Randolph Taddeo

Ronald D Prosser

Carl J Allendorph

Stephen P Israel

David L Edgar

A system and method of use of a three-phase inverter driver includes three single-phase inverters that are connected to the three-phase AC input of electric vehicle supply equipment (EVSE) so that each of the single-phase inverters provide one of the three phases of the AC signal used by the EVSE. The single-phase inverters are rectified and either have variance in their output frequencies or have their phases staggered so that the maximum voltage provided to the EVSE remains at a consistently high level. In some cases, the three phases each cross polarity simultaneously, resulting in a drop in the maximum three-phase voltage, so low-capacity capacitors are used in conjunction with the inverters to bridge these gaps in voltage. These systems and methods use readily available, inexpensive components that have regulatory safety-approval and therefore may allow implementation on a vehicle or with a load leveling energy storage system.

Three phase inverter driver

Charging service vehicles with battery and generator sources are disclosed. The service vehicle is a vehicle having electric vehicle (EV) charging equipment, removably mounted battery module(s) or a battery module connection point, and an alternator or generator transported by the vehicle. The alternator or generator is configured to provide power to the battery module or to the charging equipment. Battery modules used may be quick-disconnecting or have their discharge monitored and controlled by an onboard controller device, and in some cases are automotive SLI batteries. Some embodiments have connection points that can be configured as charging points to recharge battery modules on the vehicle or as discharging points to provide power to the EV charging equipment. These features are beneficial to extend the utility of batteries in a service vehicle, provide additional power for EV charging, and to efficiently utilize vehicle electronics and generation capability.

Charging service vehicles with battery and generator sources

Charging service vehicles and methods using modular batteries are disclosed. The service vehicles are vehicles having electric vehicle (EV) charging equipment, and removably mounted battery modules or battery module connection points. The battery modules are connected to the EV charging equipment as a source of electrical energy. Some embodiments disclose integrating the EV charging equipment with the vehicle, recharging modules through a distribution grid connection, the manner of discharging the batteries, modes of connecting and disconnecting the modules, the size and weight of the modules, quick-disconnectability of modules, control and monitoring of the modules and charging equipment, and/or ways of connecting modules to the vehicle. These features are beneficial to efficiently keep service vehicles available for EV charging through exchanging battery modules or providing additional battery modules when necessary, and may keep operators safe through de-energization of connectors and other precautions inherent in these designs.

Charging service vehicles and methods using modular batteries

A circuit for rendering an energy storage device parallelable comprised of an energy storage device connected to a power adapter that converts the potential of the energy storage device into a potential that follows a predetermined function of the state of charge of the energy storage device. When multiple assemblies are paralleled, they may be charged and discharged as a whole with individual storage devices maintaining equal states of charge. The energy storage devices can be batteries with different cell counts, configurations, and energy discharge profiles. In some cases, the power adapters are comprised of DC to DC converters and system controllers that are used to translate each battery's energy discharge profile into a user-determined energy discharge profile that is a predictable function of the battery's state of charge and independent of temperature or other external conditions.

Circuit for rendering energy storage devices parallelable

Universal electrical power conversion methods and systems which may provide the combined capabilities of symmetrical and asymmetrical conversion, bidirectionality, and simplicity are provided. In some cases, the converter charges an inductor connected in parallel between a regulated port and an unregulated port using energy stored by a capacitor positioned in parallel between the inductor and one of the ports until the inductor has a level of current stored that corresponds to the change in voltage desired at the regulated port, then discharges stored energy into the other port until a current cutoff threshold level is reached in the inductor. Creating an LC tank circuit during conversion allows conversion processes to traverse sinusoidal discharge patterns. In some embodiments, the inductor is precharged with current to affect the discharge of the inductor. Multiple ports can be connected and disconnected from the same inductor with these methods and systems.

Universal power conversion methods and systems

A universal electrical power converter having the combined capabilities of symmetrical and asymmetrical converters, bidirectionality, and simplicity is provided with methods for controlling it in single-stage conversion. In some cases, the converter charges an inductor connected in parallel between a regulated port and an unregulated port using energy stored by a capacitor positioned in parallel between the inductor and one of the ports until the inductor has a level of current stored that corresponds to the change in voltage desired at the regulated port, then discharges stored energy into the other port until a current cutoff threshold level is reached in the inductor. In some embodiments a single stage power converter is provided having three or more ports that can be connected and disconnected from the same inductor. Converters disclosed herein can convert AC signals when there is cross switching on at least one side or branch of the converter.

Growing community of inventors

Long Beach, CA, United States of America

Stephen Randolph Taddeo