Abstract: A battery management system comprises a battery manager and battery sensors for sensing related information of each battery in a battery string. The batteries in the battery string are divided into a plurality of first groups. The battery sensors are divided into a plurality of second groups. Each second group senses the batteries in a corresponding first group, and each battery sensor senses at least one battery. Each of a part of the communication ports of the battery manager is signally connected to the battery sensors of one of the second groups. The number of the battery sensors in each second group is less than or equal to the number of battery sensors that each communication port can support. The battery manager merges the battery sensors signally connected to the part of the communication ports into one group according to a merging command, and regards the merged battery sensors as battery sensors of a same battery string accordingly.

Abstract: A sealed membrane electrode assembly (MEA) and a method of sealing the MEA comprises the steps of providing a frame around a periphery of the MEA to form a framed MEA; providing a through-hole in the frame; placing the framed MEA into a seal mold, the seal mold comprising a reservoir region, a seal bead region, and at least one runner region; feeding a flow-processable seal material into the reservoir region in the seal mold that is aligned with the throughhole in the frame; feeding the flow-processable seal material from the reservoir region to the seal bead region through the at least one runner region; wherein a hydraulic diameter of the at least one runner region is less than a hydraulic diameter of the reservoir region.

Abstract: A four-stroke opposed piston engine contains a drive train containing two outer crank shaft gears, and two inner synchro gears, wherein the inner synchro gears are twice the diameter of the outer crank shaft gears. Additionally, novel piston faces are presented that when fixed on opposed pistons, create annular cavities that form advantageous combustion chambers when the pistons are at top dead center.

Abstract: An opposed-piston engine optionally contains an ignition system that is at least partially contained within the combustion chamber to enhance the combustion efficiency of a fuel-air mixture within the combustion system. More specifically, the ignition system contains at least one spark plug having an elongated center electrical delivery electrode, and, an elongated ground electrode. Accordingly, the elongated electrodes extend from an area adjacent to the inner periphery of the cylinder to a radially central area within the combustion chamber. Yet further, a cooling jacket is incorporated to provide cooling of the spark plug.

Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

Abstract: In disclosed techniques, secure communication initiation and execution is used for datacenter power control. Information relating to power control is encrypted for inclusion in a first data payload. The first data payload is used for datacenter power infrastructure control. The first data payload is sent from a first component within a datacenter to a second component within the datacenter. The first component and the second component enable power infrastructure power control of the datacenter. The datacenter power infrastructure control is modified based on decryption of the first data payload by the second component within the datacenter. The first data payload provides for intelligent power control within the datacenter. Modifying the datacenter power infrastructure control dynamically changes power control within the datacenter. The changing power control changes power policies within the datacenter. The first component is authenticated using the first data payload. Encryption includes obscurity.

Abstract: A manufacturing process of a DMOS device in a drift region in a semiconductor substrate, having: forming a polysilicon layer above the drift region; forming a block layer above the polysilicon layer; etching both the block layer and the polysilicon layer, through a window of a first masking layer to expose a window to the drift region; implanting dopants through the window to the drift region to form a body region; forming blocking spacers to wrap side walls of the polysilicon layer; implanting dopants into the body region under a window shaped by the blocking spacers to form a body pickup region; etching away the blocking spacers; performing a masking step to form gates; forming ONO spacers to wrap side walls of the gates; and performing a masking step to form source regions and drain pickup regions.

Abstract: A semiconductor device includes a semiconductor substrate having a first conductivity type, a drift layer of the first conductivity type coupled to the semiconductor substrate, a fin array having a first row of fins and a second row of fins on the drift layer, and a space between the first row of fins and the second row of fins. The first row of fins includes a plurality of first elongated fins arranged in parallel to each other along a first row direction and separated by a first distance, and the second row of fins includes a plurality of second elongated fins arranged in parallel to each other along a second row direction and separated by a second distance.

Abstract: An LDMOS device with sinker link. The LDMOS device has a buried layer, a first well region and a sinker linking the buried layer and the first well region. The LDMOS device has a trench with its upper portion surrounded by the first well region and its lower portion surrounded by the sinker. The trench is formed so that the sinker can be formed by ion implantation through the trench. The trench is filled with non-conductive material.

Abstract: A vertical junction field effect transistor (JFET) includes a substrate, an active region having a plurality of semiconductor fins, a source metal layer on an upper surface of the fins, a source metal pad layer coupled to the semiconductor fins through the source metal layer, a gate region surrounding the semiconductor fins, and a body diode surrounding the gate region

Abstract: A voltage regulator has a switching circuit and a control circuit. The switching circuit receives an input voltage and provides an output voltage and an output current. The control circuit provides a control signal to the switching circuit, such that the output voltage is maintained at a clamp voltage level when the output current is lower than a transition current level, and the output voltage decreases as the output current increases when the output current is higher than the transition current level.

Abstract: A user is authenticated to a defined space, by entering identification data and phone data that respectively identify the user and the user's phone to a server, by sending an application from the server along a wireless connection to the user's phone after entry of the identification data and the phone data by executing the application received by the user's phone to create a virtual symbol of virtual characters in the user's phone, by posting a security symbol in the defined space, by capturing a security image of security characters from the security symbol with the user's phone, by comparing the security characters with the virtual characters, and by authenticating the user to the defined space when the virtual characters match the security characters.

Abstract: A battery-operated electric mower having a chassis that supports at least an operator support and a first and second drive wheel, each drive wheel respectively connected to one of a first and a second drive wheel motor. The first drive wheel motor may be connected to the first drive wheel by a first gear mechanism, which may include a first system of planetary gears, and the second drive wheel motor may be connected the second drive wheel by a second gear mechanism, which may include a second system of planetary gears. The chassis also supports a battery pack positioned, at least in part, within the same horizontal plane as at least one of the drive wheel motors. The battery may be positioned, at least in part, between the first drive wheel motor and the second drive wheel motor, significantly lowering the mower's center of gravity.

Abstract: An energy recycle circuit for a flyback circuit and method thereof. The energy recycle circuit has an auxiliary switch coupled in series to a clamp capacitor to form a branch, and the branch is coupled in parallel with the primary winding, or with the primary switch. The energy recycle circuit further has a recycle control circuit to generate an auxiliary switching signal. The auxiliary switch is turned on during a charging process of the clamp capacitor, and is turned off at an end of an immediate subsequent discharging process of the clamp capacitor. The charging process of the clamp capacitor is timed at a first length of time, and the immediate subsequent discharging process of the clamp capacitor is timed at a second length of time, based on an auxiliary switch current signal. The second length of time is adjustable to have an equal time length with the first length of time, or have a unequal time length with the first length of time.

Abstract: A power supplying device comprising a battery, a charging circuit and a DC-AC conversion circuit is provided. The charging circuit is electrically coupled to an AC power source and configured to charge the battery. The DC-AC conversion circuit is electrically coupled to the battery and configured to supply an AC output. When the power supplying device is powered on, both of the charging circuit and the DC-AC conversion circuit are enabled.

Abstract: A self-deactivating tethered interconnection system for a power outlet is provided, in which a circuit breaker actuates to selectively disable transfer of electrical power supplied at a source side of the power outlet to a load side thereof. A conductive tether disposed at the load side transmits the electrical power transferred by the circuit breaker. A power connector coupled to the conductive tether is configured for interconnection with a load for delivery thereto of the electrical power transmitted by the conductive tether. A proving circuit coupled to the power connector and circuit breaker includes a sensing portion that detects an interconnection state of the power connector to the load, and a trip portion operating responsive to the sensing portion to selectively inhibit transfer of the supplied electrical power to the load side. The power connector and conductive tether are thus adaptively de-energized when interconnection with the load is interrupted.

Abstract: A methods and systems for generating rectified signals are disclosed. For example, a system performing the methods includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.

Abstract: In disclosed techniques, secure communication initiation and execution is used for datacenter power control. Information relating to power control is encrypted for inclusion in a first data payload. The first data payload is used for datacenter power infrastructure control. The first data payload is sent from a first component within a datacenter to a second component within the datacenter. The first component and the second component enable power infrastructure power control of the datacenter. The datacenter power infrastructure control is modified based on decryption of the first data payload by the second component within the datacenter. The first data payload provides for intelligent power control within the datacenter. Modifying the datacenter power infrastructure control dynamically changes power control within the datacenter. The changing power control changes power policies within the datacenter. The first component is authenticated using the first data payload. Encryption includes obscurity.

Abstract: A charging device including a converter and a controller coupled with the converter is provided. The charging device is suitable for charging to an electronic device having a rated input voltage value. The converter can receive a power. Wherein, the controller makes the converter to output a first charging voltage value to the electronic device. The first charging voltage value is greater than the rated input voltage value of the electronic device. Further, a charging method of the charging device is provided.