#Momentum Dynamics Corporation

FOREIGN OBJECT DETECTION FOR WIRELESS POWER TRANSFER SYSTEMS

Foreign objects impinging on a ground transceiver assembly (GTA) of a wireless power transfer (WPT) station are detected using a two-stage foreign object detection system. In a first stage, at least o…

DRIVE·Oct 19·2 min read

H02J50/60 Momentum Dynamics Corporation

Charging Frequency Determination for Wireless Power Transfer

A charging frequency between a transmitting coil and a receiving coil of a wireless power transfer (WPT) system is found by setting an input voltage to the transmitting coil at a fixed voltage, shunti…

DRIVE·Jun 15·2 min read

B60L53/12 Momentum Dynamics Corporation

CONTACTLESS SWAPPABLE BATTERY SYSTEM

A contactless battery system includes a sealable dustproof and waterproof case that houses a battery unit and at least one wireless power transmission coupler connected to the battery unit. The at lea…

DRIVE·Nov 17·2 min read

H02J50/12 Momentum Dynamics Corporation

MODULAR MAGNETIC FLUX CONTROL

Modular coil assemblies for wireless charging of vehicles have coil geometries and communications designed to limit electromagnetic field (EMF) levels in regions where humans or other living objects m…

DRIVE·Sep 22·1 min read

B60L53/122 Momentum Dynamics Corporation

OPPORTUNITY CHARGING OF QUEUED ELECTRIC VEHICLES

A traffic queue having at least one charging lane including a plurality of ground-side wireless charging assemblies installed in the ground and spaced to permit at least two vehicles to be simultaneou…

DRIVE·Sep 15·1 min read

H02J50/90 Momentum Dynamics Corporation

PASSIVE ARC DETECTION AND MITIGATION IN WIRELESS POWER TRANSFER SYSTEM

A charging system for charging a battery includes a rectifier that rectifies power received from an AC power source into a DC signal for charging the battery and an arc detection circuit that measures…

DRIVE·Aug 25·2 min read

H02J7/0047 Momentum Dynamics Corporation

EFFICIENCY GAINS THROUGH MAGNETIC FIELD MANAGEMENT

A resonant induction wireless power transfer coil assembly designed for low loss includes a wireless power transfer coil, a non-saturated backing core layer adjacent the wireless power transfer coil, …

DRIVE·Feb 3·1 min read

H02J50/12 Momentum Dynamics Corporation

NEAR FIELD, FULL DUPLEX DATA LINK FOR RESONANT INDUCTION WIRELESS CHARGING

A full duplex, low latency, near field data link controls a resonant induction, wireless power transfer system for recharging batteries. In an electric vehicle embodiment, an assembly is aligned with …

DRIVE·Oct 21·2 min read

H04B5/0031 Momentum Dynamics Corporation

SAFETY CIRCUITS FOR WIRELESS POWER TRANSFER

A magnetic inductive resonance charging circuit includes a resonant network having an inductive secondary coil that converts a magnetic field received from an inductive primary coil into an alternatin…

DRIVE·Oct 21·1 min read

H02J7/0029 Momentum Dynamics Corporation

CURRENT SENSING IN A WIRELESS POWER TRANSFER SYSTEM

A current sensing method measures a fractional current through a coil having a plurality of coil windings by using a current sensing resistor to measure a current through a subset of the plurality of …

DRIVE·Sep 23·1 min read

G01R15/18 Momentum Dynamics Corporation