Abstract: Disclosed are techniques for identifying battery pack types and by inference battery chemistries by measuring a transient response of the battery pack to signal applied to the battery pack.

Abstract: Disclosed is a system, apparatus and method for facilitating wireless charging of one or more battery-powered devices. In accordance with the aspects of the system, apparatus and method, one or more first charging coils present in a charging device may generate and emit magnetic flux in response to power supplied to the charging device. Further, a battery cell of one or more battery-powered devices, embedded within the charging device, may include a second charging coil. The second charging coil may receive the magnetic flux emitted based upon a resonant coupling formed between the one or more first charging coils and the second charging coil. The magnetic flux received may induce an electric current within the one or more battery-powered devices. The electric current induced may be utilized for simultaneously charging the battery cell of the one or more battery-powered devices.

Abstract: A battery charging system includes a master charger that receives a supply voltage, outputs a master charging current based on the supply voltage, and selectively outputs a slave charger control signal. At least one slave charger receives the slave charger control signal from the master charger, receives the supply voltage, and selectively outputs a slave charging current based on the slave charger control signal and the supply voltage.

Abstract: An exemplary embodiment of the present invention provides a battery protection circuit including a battery, a fuse, a charging switch including a first body diode that is forward biased in a discharge path direction, a discharging switch including a second body diode that is forward biased in a charge path direction, a thermistor including a first end and a second end, the first end being coupled between the charging switch and the discharging switch, and a controller configured to sense a voltage value from the second end of the thermistor, and configured to control the fuse, the charging switch, and the discharging switch.

Abstract: A battery state detection device (1) includes a shunt resistor (7) and a battery post terminal (4). The shunt resistor (7) includes a second conductor part (12) in the shape of a flat plate. The battery post terminal (4) includes a battery post connecting part (20) for connection to a battery post, and a shunt resistor connecting part (22) for connection to the second conductor part (12) of the shunt resistor (7). The shunt resistor connecting part (22) is in the shape of a flat plate. The second conductor part (12) of the shunt resistor (7) and the shunt resistor connecting part (22) of the battery post terminal (4) are connected to each other by welding.

Abstract: A wireless charging system for a power tool includes a charging module, docking frame, and tool holder. The charging module has a charging surface and an inductive charging device for charging a power tool resting on the charging surface, and is mounted in the docking frame, which is mounted in a mounting interface of the tool holder such that the charging surface is at an angle. The tool holder further includes a holding portion extending from a downward portion of the mounting interface such that the holding portion transversely supports the power tool. A soft insert structure received in the holding portion forms an interference fit with the power tool and applies a load to the power tool toward the charging surface that urges the power tool to an optimal location for charging, relative to the inductive charging device.

Abstract: A railroad system includes a first vehicle and a second vehicle. The first vehicle includes a drive-part, an inverter, an electric storage device, and a control part. The control part controls feasibility of charge or discharge of the electric storage device based on a detection value of any of a charge accumulation amount of the electric storage device, a distance between the first vehicle and the second vehicle, or a voltage value of a power line. When it is assumed that the detection value when charge or discharge of the electric storage device is switched from an allowable state to a prohibited state is a first set value, and the detection value when charge or discharge of the electric storage device is switched from a prohibited state to an allowable state is a second set value, the first set value and the second set value are different from each other.

Abstract: A battery pack includes a first battery with a first capacity, a second battery with a second capacity less than the first capacity, and a variable resistor. The second battery has a larger maximum discharge current than the first battery. The variable resistor circuit limits the discharge current of the first battery to a predetermined limit current value.

Abstract: A wireless charging device for wirelessly transmitting electric power to an electronic device includes a housing, a system board within the housing and including a power amplifier, a shield-can within the housing with a separation distance between a top of the housing and a top of the shield can, a transmission resonator between the top of the housing and the top of the shield-can for simultaneously generating a vertical magnetic field and a horizontal magnetic field, and a sheet provided between the shield-can and the transmission resonator for shielding the system board and the transmission resonator from each other's electromagnetic fields, wherein the electromagnetic fields comprise the vertical magnetic field and the horizontal magnetic field generated by the transmission resonator and an electromagnetic field generated by the system board.

Abstract: There is provided a battery remaining-life estimation apparatus that includes a memory, and a circuit. The memory is configured to store information about a polarization-voltage curve of a secondary battery, the information being stored with a correlation with a current value and a temperature of the secondary battery. The circuit is configured to estimate a remaining power of the secondary battery, the remaining power being estimated based on a discharge curve of the secondary battery. The circuit obtains the polarization-voltage curve based on the information in the memory, the polarization-voltage curve being correlated with the current value and the temperature of the secondary battery. The circuit also estimates the discharge curve by subtracting the obtained polarization-voltage curve from an open-circuit voltage curve obtained for the secondary battery.

Abstract: A portable power unit is provided that can be embodied in backpack, waist-pack, or other portable form. The portable power unit can include a battery, a bidirectional power processor, and a power port. The bidirectional power processor allows for direct current (DC) power exchange between the battery and the bidirectional power processor and a user selectable alternating current (AC) or DC power exchange between the bidirectional power processor and a power port through which a power source and an external load can be connected for charging and discharging of the electrochemical battery, respectively.

Abstract: A power supply device including vehicle connecting portions, a load connecting portion, a power supply portion, a memory portion for storing the number of charges and discharges for each storage-battery-equipped vehicle, and a supply control portion for performing control such that the power supply portion performs a discharge operation only on a selected supply vehicle. The supply control portion selects as the supply vehicle one of the storage-battery-equipped vehicles that satisfies a first condition that an SOC of a storage battery is greater than or equal to a prescribed value and a second condition that the number of charges and discharges is not the highest among the storage-battery-equipped vehicles.

Abstract: An active discharge circuit discharges an X capacitor and includes a sensor circuit that generates a sensor signal indicative of an AC voltage at the X capacitor. A processing unit generates a reset signal as a function of a comparison signal. A comparator circuit generates the comparison signal by comparing the sensor signal with a threshold. A timer circuit sets a discharge enable signal to a first logic level when the timer circuit is reset via a reset signal. The timer circuit determines the time elapsed since the last reset and tests whether the time elapsed exceeds a given timeout value. If the time elapsed exceeds the given timeout value, the timer circuit sets the discharge enable signal to a second logic level. A dynamic threshold generator circuit varies the threshold of the comparator circuit as a function of the sensor signal.

Abstract: Techniques for electric vehicle systems, and in particular to electric vehicle charging systems and associated methods of use are provided. In one embodiment, a system for aligning a charging panel of an electrical vehicle to receive a charge from an external source is provided, the system comprising a charging panel interconnected to the electrical vehicle; an actuator interconnected to the charging panel; a sensor configured to sense an alignment measurement between the charging panel and an external power source; and an alignment controller that receives the alignment measurement and determines a required alignment adjustment, wherein the charging panel may be adjusted to receive the charge from the external power source.

Abstract: There is a disadvantage that a loss generated in a charging apparatus becomes large. It is determined whether a link voltage Vo is equal to or higher than a predetermined value Va. If the link voltage Vo is less than the predetermined value Va, a control unit activates a DC-DC converter in a boosting operation. That is, by turning on/off the switching element, the voltage boosted from the storage battery is supplied to the link voltage Vo. The control unit determines whether the link voltage Vo is equal to or higher than the predetermined value Va. If the link voltage Vo is less than the predetermined value Va, the operation is continued. When the link voltage Vo rises due to the boosting operation of the DC-DC converter and becomes equal to or higher than the predetermined value Va, the boosting operation of the DC-DC converter is stopped.

Abstract: An apparatus for charging a mobile terminal includes an energy harvesting device provided in shoes and generating energy generated by a movement of a human body, a charge control module attached to trousers and controlling charging of a mobile terminal using energy harvested by the energy harvesting device, and a resonant coil module wirelessly transmitting energy harvested by the energy harvesting device to the charge control module, wherein the resonant coil module includes a transmission resonant coil unit provided in the shoes and a reception resonant coil unit provided in the trousers, spaced apart from the transmission resonant coil unit by a predetermined distance, and magnetically coupled to the transmission resonant coil unit.

Abstract: A charging apparatus (1) for a vehicle that can be driven electrically has a charging cradle (4) with an access opening (8) and an electrical charging socket (5) is arranged in the charging cradle (4). A closure cover (7) is mounted pivotably in the charging cradle (4) and, in a closed position, covers the access opening (8) in the charging cradle (4) and, in an open position, opens said access opening. A sealing ring (12) which extends around the charging socket (5), and the closure cover (7) has a ring attachment (13) that makes contact with the sealing ring (12) along a ring contour of the sealing ring when the closure cover (7) is closed. Thus, the charging socket is sealed off reliably to the outside.

Abstract: A cooling system includes a cooling unit configured to cool at least one of a power reception unit configured to wirelessly receive power from a power transmission unit and a power storage unit configured to store the power received by the power reception unit; and a controller configured to control the cooling unit. The cooling unit is operated by the power received by the power reception unit, and the controller controls the cooling unit on the basis of a necessary amount of charge of the power storage unit.

Abstract: A 12 volt automotive battery system includes a first battery coupled to an electrical system, and the first battery includes a first battery chemistry. Further, the 12 volt automotive battery system includes a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a bi-stable relay. The second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. Additionally, the bi-stable relay couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. Furthermore, the bi-stable relay maintains a coupling of the second battery to the electrical system when the vehicle transitions from a key-on position to a key-off position.

Abstract: An operating method includes receiving a wireless power signal from a power providing equipment; receiving a request from the power providing equipment; and under a condition that a battery level of a battery of the mobile device is less than a threshold value, transmitting an unavailable message to the power providing equipment, so that the power providing equipment charges the battery of the mobile device by utilizing the wireless power signal according to the unavailable message.