Abstract: Devices and methods for charging a power storage device using a piezoelectric energy-harvest charger that employs a single switched inductor stage. The charger may maintain a maximum power point without requiring a second switched inductor stage.

Abstract: In a battery management system, during a pre-charge mode, a first contactor is closed to provide a pre-charge current path from a low voltage battery supply node through a DCDC converter and through the first contactor to pre-charge a capacitor of an inverter for an electric motor. During a drive mode following the pre-charge mode, the first contactor is opened and a second contactor is closed to provide a drive mode current path from a high voltage battery supply node through the second contactor to the inverter to power the electric motor. In response to detecting an open fault in the second contactor during the drive mode, a limp mode is entered. During the limp mode, the first contactor is closed to provide a limp mode current path from the high voltage battery supply node through the first contactor to the inverter to power the electric motor.

Abstract: A power receiving device receives power from a power transmitting device including a primary coil in a contactless manner and supplies power to a power storage device. The power receiving device includes a secondary coil that receives AC power of a predetermined frequency from the primary coil, a capacitor that is connected to the secondary coil and constitutes a resonant circuit together with the secondary coil, a rectifier circuit that rectifies output power from the resonant circuit, a power conditioning circuit that is provided between the power storage device and the rectifier circuit and includes a switch, and a control device that controls the switch by a predetermined driving frequency. The driving frequency is a frequency obtained by dividing the predetermined frequency of the AC power by a natural number equal to or greater than 2.

Abstract: A battery powered electronic device can include a wireless power system configured to receive power from a wireless power transmitter, a converter coupled to the wireless power system that converts a voltage from the wireless power system to a battery charging voltage, a battery comprising at least two cells, a power management unit that delivers power from one or more of the at least two cells to one or more subsystems of the electronic device, and a plurality of switching devices connecting the at least two cells, the converter, and the power management unit. The plurality of switching devices can be arranged so that a first switching configuration connects the cells in series for charging from the converter and a second switching configuration connects the cells in parallel for delivering power to the power management unit.

Abstract: A rechargeable battery jump starting device and a rechargeable battery assembly for use in the portable rechargeable battery jump starting device. The portable rechargeable battery jump starting device maximizes the power conducted from the rechargeable battery assembly to a battery being jump started.

Abstract: A battery charger usable with rechargeable battery. The battery charger includes a housing and a handle. The housing includes a connection rail. The connection rail slidably interfaces with the rechargeable battery. The connection rail extends parallel to a plane. The handle is movably coupled to the housing. The handle can be positioned in at least a first position and a and a second position. In the first position, at least a portion of the handle intersects with the plane. In the second position, the plane is not obstructed by the handle.

Abstract: A mobile cart for a medical device is disclosed. The cart is designed to transport a medical device such as a dialysis machine (e.g., a peritoneal dialysis (PD) machine). The medical device can be connected to a power supply included in the cart, where the power supply includes one or more energy storage devices (e.g., batteries), a charging circuit, and (optionally) an inverter. The cart can also include a number of features such as automatic brakes, UV light sterilization, sensors such as object detection safety features, environmental sensors, and the like. The cart can include electronic components that enables certain functionality such as hosting a wireless local area network or communicating wirelessly with the medical device. A docking station is also disclosed that enables wireless charging of the power supply such that neither the medical device nor the cart needs to be plugged into an external power supply.

Abstract: An energy storage system including an energy storage string formed by rechargeable cells connected in series and an energy management device including a master control unit and at least a first local control unit associated to a first rechargeable cell. A storage string connecting circuit is coupling a positive string terminal with a negative string terminal and a cell connecting circuit is coupling a positive and a negative cell terminal of the first rechargeable cell. The storage string connecting circuit includes a first capacitor device forming with the energy storage string a first closed-loop LC-circuit, and/or the cell connecting circuit includes a second capacitor device forming with the first rechargeable cell a second closed-loop LC-circuit. A master AC signal generator and a local signal generator are configured for generating a first and a second AC pulse in respectively the storage string connecting circuit and the cell connecting circuit.

Abstract: Discussed is a pre-charge circuit and a battery system including the same, and the battery system includes: a battery pack configured to include a plurality of battery cells; a pre-charge relay configured to include a first MOSFET and a second MOSFET connected in series between a first electrode and an output terminal of the battery pack, a third MOSFET connected in parallel with the first MOSFET, and a fourth MOSFET connected in parallel with the second MOSFET; and a BMS configured to generate a gate voltage for controlling on and off of the relay.

Abstract: A battery management apparatus and method according to an embodiment of the present disclosure estimates an internal state of a battery cell by updating a battery model, and it is aimed to provide a battery management apparatus and method, which may construct a battery model optimized for a battery cell by obtaining a parameter of the battery model through a neural network and then repeatedly updating the parameter of the battery model based on a difference between an output value of the battery model that reflects the obtained parameter and an actually measured value, and control charging of the battery based on the optimized battery model.

Abstract: Systems and methods are configured for coordinating and providing passthrough charging during bidirectional energy transfer events between two or more electrified vehicles. The ability to pass charging power from one vehicle to another allows for multiple vehicles to be concurrently charged from a single charge source. Various passthrough charging strategies may be achieved with the proposed systems, including but not limited to, a distributed charging strategy, a waterfall charging strategy, a targeted charging strategy, an automated charging strategy, a pay-for-use charging strategy, etc.

Abstract: The embodiments of the present application provide a method, apparatus, device, and medium for electric energy transmission. The method includes: determining a resource value of a unit of electric energy of a grid at a target time; under a condition that the resource value is greater than or equal to a first resource threshold, determining a number of available batteries in a battery swapping station and an ordered number of batteries in the battery swapping station within a target time period; and under a condition that the number of available batteries is greater than a number of reserved batteries, controlling a charging and discharging module to transmit electric energy of a first battery in the battery swapping station to the grid.

Abstract: The present disclosure is directed to providing a battery pack, which may output a current that satisfies the operating specifications of a load even over a wide voltage range by including a plurality of current paths. In addition, according to an aspect of the present disclosure, since a current path corresponding to an input voltage range is automatically selected, there is an advantage of providing a battery pack compatible with an input of a wide voltage range.

Abstract: Disclosed herein is a solid-state battery includes a battery element including alternating positive electrode layers and negative electrode layers each separated by a respective solid electrolyte layer interposed in between; a positive electrode terminal that is attached to the battery element to be electrically connected to the positive electrode layers and electrically separated from the negative electrode layers; a negative electrode terminal that is attached to the battery element to be electrically connected to the negative electrode layers and electrically separated from the positive electrode layers; an insulating coating that covers the battery element, wherein a respective portion of each of the positive electrode terminal and the negative electrode terminal lead out of the covered battery element; and a heat receiving member that is attached to the insulating coating so as to be electrically separated from both the positive electrode terminal and the negative electrode terminal.

Abstract: A charging system for an Implantable Medical Device (IMD) is disclosed having a charging coil and one or more sense coils preferably housed in a charging coil assembly coupled to an electronics module by a cable. The charging coil is preferably a wire winding, while the sense coils are preferably formed in one or more traces of a circuit board. One or more voltages induced on the one or more sense coils can be used to determine one or more parameters (magnitude, phase angle, resonant frequency) indicative of the position between the charging coil and the IMD, which position may include the radial offset and possibly also the depth of the charging coil relative to the IMD. Knowing the position, the power of the magnetic field produced by the charging coil can be adjusted to compensate for the position.

Abstract: A battery system for an electric vehicle includes a battery module having battery cells and a controller module connected to the battery cells, the controller module being configured to measure voltage values, current values, and temperature values of at least one of the battery cells, and a controller unit connected to the battery module and configured to communicate with the controller module via a data line, the controller unit being configured to determine an inherent physical property of the at least one of the battery cells based on the measured values of the controller module, to compare the determined inherent physical property with a reference value for the inherent physical property, and to perform an authentication of the at least one of the battery cells based on the comparison.

Abstract: A battery charging apparatus includes a battery charger having a housing and a battery mount plate for charging the battery. A contact block of the battery mount plate includes an electrical terminal configured to provide a charging voltage to the battery. The battery can operate in a first state in which the battery delivers a first delivery voltage or in a second state in which the battery delivers a second and higher delivery voltage. The battery can be charged in the first state or the second state. The battery charger switches the battery between the first state and the second state in which power is provided to the battery through the electrical terminal at the second and higher charging voltage to charge the battery.

Abstract: Systems and methods for managing the temperature of an energy storage system are provided. In some embodiments, the energy storage system includes a housing, a first terminal, a second terminal, an energy storage element disposed within the housing, a thermal management system, and a controller. In some embodiments, the energy storage element are configured to electrically connect to a load or a grid via the second terminal. The thermal management system is configured to manage a temperature within the housing and also configured to receive power from an external power source via the first terminal.

Abstract: This disclosure describes, in part, techniques for reducing pulsating currents of internal power sources, such as batteries. For example, a device may include a power source, a load, and a control device located between the power source and the load. The control device may include a power converter that is configured to maintain a constant input current from the power source and output a pulsating current to the load. While regulating the power, the control device may determine whether an average output power is different than a reference power. If the average output power is equal to the reference power, then the control device may cause the power converter to maintain the constant input current. However, if the average output power is different than the reference power, then the control device may cause the power converter to alter (e.g., decrease/increase) the input current being received from the power source.

Abstract: An apparatus is disclosed for parallel charging of at least one power storage unit. In example implementations, an apparatus includes a charging system. The charging system includes a first charger having a first current path and a second charger having a second current path. The charging system also includes a charging controller coupled to the first current path. The charging system further includes an indication path coupled between the second current path and the charging controller.