A system and method for mounting and charging a portable electronic device on or in contiguity to a wireless charging device. The wireless power transferring and charging device includes a suction pump that provides a suction vacuum to mount/hold a portable electronic device onto an induction charging surface of the wireless charging device in a vertical or semi-vertical position to be wirelessly powered and/or charged.

Method and system to mount a portable electronic device to wirelessly charge

Techniques for electric vehicle systems, and in particular to an electric vehicle charging system and method of use. In one embodiment, a system for charging an electric vehicle is provided, the system comprising: an electrical storage unit disposed on the electric vehicle; a charging panel in electrical communication with the electrical storage unit; a robotic unit comprising an external power source, a charging plate and a robotic arm, the charging plate interconnected to the robotic arm and configured to provide a charge to the charging panel; and a vehicle controller configured to communicate with the robotic unit and position the charging plate with respect to the charging panel; wherein the charging panel receives the charge from the external power source and charges the electrical storage unit.

Electric vehicle charging station system and method of use

An in situ (internal) electric field is used as a dosimetric quantity for human protection from low-frequency electromagnetic fields (lower than 5 MHz) under international safety standard/;guidelines. The IEEE standard uses a homogenous elliptical cross section to derive external field strength corresponding to an in situ field strength, while the International Committee on Non-Ionizing Radiation Protection (ICNIRP) guidelines use anatomical models to relate them. In the latter, “the 99th percentile value of the in situ electric field averaged over the cube of its side length of 2 mm” is used to represent the maximum in situ electric field. This metric was introduced to suppress computational artifacts that are inherent when using voxelized anatomical models, in which curved boundaries are discretized with a stair-casing approximation. To suppress the error, a few schemes have been proposed for treating the computational artifacts. In this study, the various schemes to suppress the artifacts are reviewed. Subsequently, a postprocessing method for determining the appropriate maximum in situ field strength is proposed. The performance of the proposed scheme is first verified by comparison with an analytical solution in a multilayered sphere. The method is then applied for different exposure scenarios in anatomically realistic human models where the volume under computation is also considered.

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Computational Artifacts of the In Situ Electric Field in Anatomical Models Exposed to Low-Frequency Magnetic Field

An apparatus for detecting a presence of an object (1150) is provided. The apparatus includes an inductive sensing coil (1102) that is configurable to generate a first magnetic field. The inductive sensing coil (1102) is configured to have an electrical characteristic that is detectable when generating the first magnetic field. The electrical characteristic varies as a function of a second time-varying magnetic field simultaneously applied to the object. The apparatus comprises a controller (1140) configured to detect a change in the electrical characteristic and determine a presence of the object based on the detected change in the electrical characteristic. The electrical characteristic comprises one or more of an equivalent resistance, an equivalent inductance, an equivalent impedance, and an impulse response of the inductive sensing coil. The object comprises one or more of a ferromagnetic object, a metallic film and a metallic foil.

Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space

An example method of wireless power transmission includes generating, by a receiver, location data associated with one or more objects based upon one or more object detection signals reflected from the one or more objects and indicating a location of each respective object in relation to the receiver. The method also includes transmitting, by the receiver, one or more communications signals containing the location data to the transmitter. The method further includes receiving, by the receiver, from one or more antennas of the transmitter one or more power waves having one or more waveform characteristics, wherein the characteristics are based on the location data generated for each respective object.

Radar motion detection using stepped frequency in wireless power transmission system

A vehicular charging system is provided that includes a battery and a charger region. The system also includes a wireless charger for generating an electric charging signal in the charger region to charge the battery, and a plurality of sensors located to sense foreign objects and living beings in proximity to the charger region. The system further includes a controller for controlling the charger to at least reduce the charging signal when a foreign object or a living being is in proximity to the charger region. The controller may be configured to terminate the charging signal and/or activate an alarm element when a foreign object or a living being is in proximity to the charger region.

Vehicle wireless charger safety system

A vehicle wireless charging system is provided that senses an object that prohibits wireless charging when an object is sensed. The system includes a charger region and a wireless charger for generating an electromagnetic field in the charger region to charge a rechargeable device. The system also includes a proximity sensor located proximate the charger region to sense presence of an object. A controller controls the wireless charger to prohibit charging when the object is sensed.

Wireless charging system having sense shutdown and method therefor

Interactions between cable harness and vehicle body can be calculated using the full-wave method-of-moments (MoM) formulation. Although the full-wave MoM formulation can help us to calculate these interactions with great accuracy, it can be fairly time consuming when dealing with complex wire structures. On the other hand, the conventional multiconductor transmission-line theory can be used to obtain a simple model of the interactions, but only the effect of the transmission-line (TL)-mode current can be accounted for in this method. Starting with the complete electrical field integral equations, the current on a two-conductor thin wire structure due to incident field illumination can be decomposed into TL and antenna modes. Both modes can be solved using a SPICE solver in the form of Telegrapher's equations. A proposed multiple scattering (MS) method based on a hybrid of TL and surface MoM can then be used to calculate interactions between thin wire structures, such as cable harness, and conductive surfaces, such as vehicle body. A test case shows that wire current computation using the proposed MS method takes less time but reaches the same accuracy compared to the full-wave MoM.

Accurate Evaluation of Field Interactions Between Cable Harness and Vehicle Body by a Multiple Scattering Method

Interactions between a cable harness containing multiple wires and the nearby metal surface can be evaluated by full-wave methods. Though these methods can calculate the interactions with great accuracy, they have long simulation times and large memory requirements when dealing with complex wire structures. The multiple scattering (MS) approach by treating the cable harness and the surface separately using different algorithms has been proven to be superior to the full-wave methods when evaluating these interactions. However, the cable harness solver in the previous MS approach is restricted to two-wire structures since the per-unit-length (pul) inductance ( L ) and capacitance ( C ) are derived based on the antenna and differential modes assumption between two wires. In this paper, a generalized multiconductor transmission-line (GMTL) approach is proposed to overcome the two-wire limitation. In the GMTL approach, all wires take the infinity as the reference. The extraction of the pul L and C for the cable harness is not limited by the number of wires. Thus, the GMTL approach can conveniently model multiple wire structures. The application of the GMTL approach to the multiple wires enables the MS approach to accurately evaluate the interactions between the cable harness and the metal surface.

Evaluating Field Interactions Between Multiple Wires and the Nearby Surface Enabled by a Generalized MTL Approach

A vehicle includes an inductive charge coupling arrangement that can be electrically connected with a traction battery. The arrangement includes a charge coil and a plurality of permeable panels surrounding the charge coil. The vehicle further includes at least one controller that, in response to an inductive charge request, causes the panels to move to positions selected to minimize electromagnetic field leakage between the charge coil and a charge station.

Richard William Kautz

Papers

Vehicle wireless charger safety system

Wireless charging system having sense shutdown and method therefor

Accurate Evaluation of Field Interactions Between Cable Harness and Vehicle Body by a Multiple Scattering Method

Evaluating Field Interactions Between Multiple Wires and the Nearby Surface Enabled by a Generalized MTL Approach

Inductive wireless power transfer system having a coupler assembly