Abstract: A parent bore cylinder block of an internal combustion, opposed-piston engine includes cooling passages that are formed using a 3-D printed casting core. The casting core can include portions that are ceramic. The parent bore cylinder block can include multiple cylinders, each cylinder with cooling passages and turbulence inducing features in those cooling passages, particularly surrounding the central portions of the cylinders.

Abstract: A fuel cell system includes a membrane electrode assembly, a first plate separator and a second plate separator on opposite sides of the membrane electrode assembly. The first plate separator and the second plate separator have exterior ends laterally spaced from the membrane electrode assembly. A first gas diffusion layer is located between the first plate separator and the membrane electrode assembly. A second gas diffusion layer is located between the second plate separator and the membrane electrode assembly. The sub-gasket extends laterally from the membrane electrode assembly. A first seal is located between the first plate separator and the sub-gasket. A conductive trace is attached to the sub-gasket and extends laterally on the sub-gasket away from the first seal and upwardly away from the subgasket to contact the first plate separator.

Abstract: Three-dimensional solar power generation systems are described. The systems are characterized by a plurality of solar panels configured to include pole and equator facing panels and, in various embodiments additional top and/or side panels that form a segmented and dome-shaped assembly. The systems have improved efficiencies particularly with respect to early morning and evening power generation that enable improved power densities on a given land area as compared to traditional solar panel arrays. Methods of deploying the systems are also described.

Abstract: Aspect of the disclosure provides a method of pumping a liquid material. The method may include pumping the liquid material by rotating an impeller attached to a shaft assembly. The pump includes the impeller, the shaft assembly, and a pump chamber. The method includes controlling the minimum pressure of the liquid material in the pump chamber to be above a threshold pressure by controlling a pressure of a gas that is supplied to the pump chamber. The shaft assembly includes a first shaft and a second shaft that are separated by a gap and are physically coupled by a coupling component.

Abstract: Operating a double-sided double-base bipolar junction transistor. One example is a method of operating a switch assembly, the method comprising: blocking current flow from an upper terminal of the switch assembly to a lower terminal by a transistor; and then responsive to assertion of a conduction signal, conducting a first load current from the upper terminal to a lower terminal. The conducting the first load current may be by: closing an upper-main FET coupled between the upper terminal and an upper collector-emitter of the transistor; closing a lower-main FET coupled between a lower collector-emitter of the transistor and the lower terminal; driving a first turn-on current to an upper base of the transistor from an upper current source; and then providing a first steady-state current to the upper base from the upper current source, the first steady-state current lower than the first turn-on current.

Abstract: Inter-array cable (IAC) assemblies, systems, and methods are disclosed in which a conductive cable between two floating platforms, e.g., floating wind turbine platforms, is suspended below the sea surface and above the seabed. One or more buoyancy sections are included in the cable, which reduces the static tension on the connection at the floating platform by reducing the suspended cable weight, and which provides geometric flexibility, allowing the IAC to comply with platform motions.

Abstract: The present invention relates to a battery module capable of dissipating heat, the battery module preventing thermal damage to a battery cell due to welding heat by dissipating heat generated during welding when assembling a battery module to the outside. The battery module capable of dissipating heat according to the present invention includes a battery cell and cover members accommodating the battery cell, wherein an air-layer groove for blocking heat from the battery cell and the cover members is formed between the cover members and the battery cell.

Abstract: A transmitter for transferring power to a receiver of a wireless power transfer system is provided. The transmitter comprises a transmitter element and an inverter comprising a switched mode zero-voltage switching (ZVS) amplifier. The amplifier comprises a pair of circuits. The circuits comprise at least a transistor and at least a capacitor arranged in parallel. The circuits further comprise at least an inductor arranged in series with the transistor and capacitor. The amplifier further comprises a ZVS inductor electrically connected to the pair of circuits. The ZVS inductor operates as the transmitter element of the transmitter to transfer power to a receiver of a wireless power transfer system via magnetic field coupling. The transmitter may alternatively comprise a transmitter element, and an combined direct current/direct current (DC/DC) converter and inverter. The combined DC/DC converter and inverter comprises an amplifier comprising: a pair of circuits.

Abstract: A system for wireless power reception, preferably including one or more: antennas, dynamic impedance matches, RF-DC converters, DC impedance converters, and/or DC power outputs. A method for wireless power reception, preferably including: receiving power wirelessly at an antenna, dynamically adjusting an input impedance of a dynamic impedance match coupled to the antenna, and/or delivering the power to a load.

Abstract: A wireless power transfer system is provided. The wireless power transfer system comprises a resonator comprising a capacitor. The capacitor comprises at least two active electrodes; and a passive electrode adjacent the active electrodes and configured to encompass the active electrodes to at least partially eliminate environmental influences affecting the active electrodes and to increase the overall capacitance of the system. The resonator further comprises at least one inductive coil electrically connected to the active electrodes, wherein the resonator is configured to extract power from a generated electric field via resonant electric field coupling.

Abstract: A battery runtime extender may be configured to provide electrical power to an electronic device via electrical terminals disposed internally to the electronic device, such as within a battery compartment. The battery runtime extender may physically mount to the electronic device via fasteners associated with the battery compartment of the electronic device, where the battery runtime extender forms a seal between the housing of the battery runtime extender and the battery compartment of the electronic device that is resistant to ingress of water and/or dust. The electronic device may be configured to be mounted to equipment worn by or otherwise carried by an individual, such as a protective helmet. The battery runtime extender further provides electrical power capacity greater than would be provided by battery cells installed within the battery compartment.

Abstract: A battery module includes: a battery cell assembly having a plurality of battery cells stacked therein and a plurality of frames supporting the plurality of battery cells; a front sensing assembly measuring voltages of the plurality of battery cells and mounted on a front end of the battery cell assembly; a rear sensing assembly measuring voltages of the plurality of battery cells and mounted on a rear end of the battery cell assembly; a front cover covering at least a portion of the front sensing assembly; and a rear cover covering at least a portion of the rear sensing assembly.

Abstract: A hybrid switch circuit for coupling two circuit terminals together is disclosed. The hybrid switch circuit includes a set of bidirectional switch devices coupled between a first circuit terminal and a second circuit terminal. The hybrid switch circuit also includes a set of unidirectional switch devices that are also coupled between the first circuit terminal and the second circuit terminal. In some cases, the set of bidirectional switch devices may be implemented using bidirectional double-base bipolar junction transistors, while the set of unidirectional switch devices may be implemented using wide bandgap transistors. In response to a de-assertion of a switch signal, a control circuit may open the set of bidirectional switch devices and, after a period of time has elapsed, open the set of unidirectional switch devices.

Abstract: A power generator is described that provides at least one of electrical and thermal power comprising (i) at least one reaction cell for reactions involving atomic hydrogen products identifiable by unique analytical and spectroscopic signatures, (ii) a molten metal injection system comprising at least one pump such as an electromagnetic pump that provides a molten metal stream to the reaction cell and at least one reservoir that receives the molten metal stream, and (iii) an ignition system comprising an electrical power source that provides low-voltage, high-current electrical energy to the at least one steam of molten metal to ignite a plasma to initiate rapid kinetics of the reaction and an energy gain.

Abstract: Described herein is a battery system that allows a battery pack to operate in different modes at different times. Each of the different modes may provide its own set of functionality that affects how the battery pack operates and/or reacts to external input signals. A mode may change how the battery pack discharges power by, for example, altering whether terminals are enabled or disabled. A mode may change how the battery pack's hardware operates by, for example, disabling or enabling portions of the battery pack's hardware. A mode may change what battery-related services are provided by the battery pack and available to an end user by, for example, enabling or disabling the sending of battery status information from the battery pack.

Abstract: A system for power distribution including a first connection and a second connection each connected respectively to be a first multi connector cable and a second multi connector cable; said second multi connector cable being split into a set of two distinct wires with each distinct wire including a circuit protector, wherein each of the first multi connector cable and the second multi connector cable are ultimately connected respectively to a third connection and a fourth connection, and a fifth connection and a sixth connection.

Abstract: A cryogenic dewar may include an inner tank and an outer tank. The cryogenic dewar may further include a plurality of trunnion mounts. A first four of the trunnion mounts may be coupled between a front half of the inner tank and a front half of the outer tank. A second four of the trunnion mounts may be coupled between a rear half of the inner tank and a rear half of the outer tank. The trunnion mount may be further strengthen with a plurality of pie-shaped reinforcing pads welded to each other and to an outer surface of the inner tank.

Abstract: A hydrogen fuel coupling system may include a hydrogen fuel tank and a hydrogen fuel supply connector. The tank has a first connector, and a second connector disposed around the first connector. The second connector has a boil-off inlet port for receiving gaseous hydrogen from the tank. The hydrogen fuel supply connector may include a hydrogen fuel transfer line, a third connector for operably sealably connecting the transfer line to a first connector of the tank for supplying liquid hydrogen, and a shroud extending around the third connector and the transfer line defining a gap therebetween. A fourth connector operably sealably connects a first end of the shroud to a second connector of the tank. A second end of the shroud is operably sealably engageable with the transfer line. A boil-off vent is connected to the shroud for venting gas from the gap.

Abstract: An overcurrent detection circuit for use in a transmitter of a wireless power transfer system is provided. The transmitter comprises a transmitter element for generating a field to transfer power to a receiver of a wireless power transfer system. The circuit is adapted to shut down a transmitter of a wireless power transfer system in response to a detected short circuit event. An overvoltage protection circuit for use in a receiver of a wireless power transfer system is also provided. The receiver comprises a receiver element for extracting power from a field generated by a transmitter of a wireless power transfer system, and a switching element electrically connected to the receiver element. The overvoltage protection circuit is adapted to electrically ground the switching element based on an overvoltage event.

Abstract: A dual-input power supply has two power paths that connect a server to electrical Each power path has a first stage that comprises a power-factor correction circuit. The power paths share a common second stage that comprises a dc/dc converter. The first stages of the power paths collectively defining a pair of first stages that is disposed either within a package that is off the motherboard or without a package and on the motherboard. Similarly, the second stage is disposed either within a package that is off the motherboard or without a package and on the motherboard.