Abstract: A battery protection circuit includes a charging switch, a resistor, a charging controller, a switching circuit, a fuse circuit, and a fuse driving circuit. The charging switch is connected to a first electrode of a battery cell. The resistor includes a first end connected to a second electrode of the battery cell. The charging controller supplies a charging control current. The switching circuit connects a second end of the resistor with a control terminal of the charging switch or blocks connection between the second end of the resistor and control terminal of the charging switch depending on the charging control current. The fuse circuit is connected to a charging path of the battery cell and blocks the charging path depending on a voltage applied to a control terminal of the fuse circuit. The fuse driving circuit switches the voltage applied to the control terminal of the fuse circuit depending on a voltage between the ends of the resistor.

Abstract: Relatively inexpensive and practical cell deterioration diagnostic method and cell deterioration diagnostic device are provided. A cell deterioration diagnostic method diagnoses cell deterioration of a secondary cell having a transient characteristic. The method includes: a charging step of charging the secondary cell; a calculation step of calculating an integrated value of a potential difference obtained by subtracting a cell internal voltage V0 of the secondary cell from a cell inter-terminal voltage of the secondary cell by integrating the potential difference as the cell inter-terminal voltage converges to the cell internal voltage V0 after completion of charging; and a diagnosis step of diagnosing the cell deterioration of the secondary cell based on the integrated value.

Abstract: A circuit includes a first power converter circuit and a second power converter circuit. The input of the second power converter circuit is coupled to the output of the first power converter circuit and is configured to receive an input signal. A rechargeable battery is coupled to the output of the first power converter circuit. A charge control circuit is configured to control charging the rechargeable battery by controlling the second power converter circuit.

Abstract: An integrated multiple voltage battery system includes a first pair of output terminals, a second pair of output terminals, a plurality of first battery cells connected in series with each other and operatively connected to the first pair of output terminals, at least one second battery cell operatively connected to the second pair of outlet terminals, and a plurality of switches, the plurality of switches arranged such that each first battery cell in the plurality of first battery cells can be selectively placed in parallel with the at least one second battery cell while electrically isolating the other of the plurality of first battery cells from the at least one second battery cell, wherein each of the plurality of first battery cells has a nominal open cell voltage which is about the same as a nominal open cell voltage of the at least one second battery cell.

Abstract: Disclosed are an apparatus and a method for sensing opening of a current interrupt device (CID) of a battery unit. An apparatus for sensing opening of a current interrupt device of a battery unit according to the present invention is configured to include: a setting unit setting a predetermined voltage section when discharge of one or more battery units starts; a measuring unit measuring a voltage section pass time which is the time when the one or more battery units pass through the predetermined voltage section for each battery unit; and a detecting unit detecting a battery unit in which the current interrupt device (CID) is opened among the one or more battery units and detecting the number of battery cells in which the CID is opened among one or more battery cells included in the battery unit in which the CID is opened based on the voltage section pass time for each battery unit.

Abstract: At least one of a system or a method for wirelessly charging a device is provided. A wireless receiver is configured to communicate with a device to be charged to determine a desired charge scenario indicative of power to be supplied to the device. Based upon the desired charge scenario, a resonant frequency of the wireless receiver is set. The resonant frequency, in combination with energy transferred from a wireless transmitter, is configured to induce a current in the wireless receiver. Power is supplied to the device based upon the current induced in the wireless receiver.

Abstract: The power storage device includes a battery group in which n series circuits C1 (wherein n represents an integer of 2 or greater) are connected in parallel and a battery controller controlling a switching device based on allowable charge/discharge power of the capacitor. The series circuit C1 includes a capacitor and the switching device which are connected in parallel. The battery controller controls the switching device to maximize the allowable charge/discharge power of the battery group.

Abstract: A system and method for detecting voltage of a battery pack. The system comprises a level transfer circuit array, a multipath data selector, a decoder, a trimming calibration circuit, and an output buffer. The decoder is configured to parse a battery pack cell gating signal; the level transfer circuit array is configured to convert a gated battery pack cell voltage into a common grounded voltage; the multipath data selector is configured to transmit the common grounded voltage, which is converted by the level transfer circuit array, of a battery pack cell to the trimming calibration circuit; the trimming calibration circuit is configured to correct the received common grounded voltage of the battery pack cell; and the output buffer is configured to buffer the common grounded voltage, which is trimmed and calibrated by the trimming calibration circuit, of the battery pack cell.

Abstract: A battery balance circuit configured for a battery apparatus having two batteries coupled in series, can include: first and second capacitors respectively coupled to two terminals of the two batteries; first and second switching circuits respectively coupled to the two terminals of the two batteries, where the first and second switching circuits are configured to control charging or discharging of each of the two batteries; a third capacitor coupled between the first and second switching circuits, where the third capacitor is configured to store or release energy in order to balance battery levels between the two batteries; and parasitic inductors, where the third capacitor and the parasitic inductors are configured to resonate, and the first and second switching circuits are configured to operate at a resonance frequency.

Abstract: A first DC/DC converter is of a constant voltage control type and is controlled so as to keep the voltage of an electric generation bus at a predetermined target value. A second DC/DC converter is of a constant current control type and is controlled so as to keep input current or output current at predetermined target current. A control circuit determines an optimum target value of electric generation bus voltage, based on different algorithms, in accordance with all or some of modes A to C which are classified by the charging/discharging condition of a second electric storage device, and controls the first DC/DC converter so that the electric generation bus voltage becomes the determined target value.

Abstract: A method of charging a secondary battery and a charging device that can improve stability and extend the life span of the battery. When the secondary battery includes a plurality of cells, the charging method is changed when a voltage imbalance from 100 mV to 300 mV occurs among the cells. In that range, the charging method changes from a constant current-constant voltage charging method to a pulse-charging method. When the voltage imbalance is 300 mV or more, the electricity path is blocked, shutting down the battery. When the voltage imbalance is 100 mV or less, the constant current-constant voltage charging method is maintained. The method and device also stop charging when the battery reaches full charge.

Abstract: A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a first soft magnetic layer stacked on the substrate, and including a soft magnetic material, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, and including a first coil layer wound in parallel with the soft magnetic layer, and a second coil layer electrically connected to the first coil layer and wound in parallel with the first coil layer, and a current direction of the first coil layer is opposite to a current direction of the second coil layer.

Abstract: A fast charging method, apparatus, and device for a USB electronic device including obtaining, according to a preset charging current threshold, a corresponding charging data set of the electronic device under the present charging current threshold, determining, according to the charging data set, a maximum charging current value corresponding to the electronic device; setting the determined maximum charging current value as a charging current threshold of the electronic device, and controlling charging of the electronic device according to the charging current threshold.

Abstract: The present disclosure provides an overvoltage and overcurrent protection circuit and a mobile terminal. The overvoltage and overcurrent protection circuit comprises a primary protection circuit and a secondary protection circuit. The primary protection circuit comprises a power end coupled to an anode of a cell, a detection end coupled to a cathode of the cell, and a low potential interface end coupled to a ground end of a charging and discharging interface. The secondary protection circuit comprises a high potential cell end, a low potential cell end, and a high potential interface end, in which the high potential cell end is externally coupled to the anode of the cell, the low potential cell end is externally coupled to the cathode of the cell, and the high potential interface end is externally coupled to a power end of the charging and discharging interface.

Abstract: The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier unit, a switch unit, a transformer, a second rectifier unit, a sampling unit, a control unit and a first isolation unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current value and/or voltage value sampled by the sampling unit, such that a third voltage with a third pulsating waveform outputted by the second rectifier unit meets a charging requirement. The terminal includes a battery. When the terminal is coupled to the power adapter, the third voltage is applied to the battery.

Abstract: A charging device that charges a battery device is provided. The battery device includes a memory that stores first degradation information indicating a degradation state of the battery device. The charging device includes: a voltage detection unit that detects a voltage of the battery device; and a control unit that (a) receives the first degradation information from the battery device, (b) determines degradation progress information indicating a progress degree of the degradation state of the battery device, by using a voltage detected by the voltage detection unit, (c) generates second degradation information indicating a degradation state of the battery device, by using the degradation progress information and the first degradation information, and (d) transmits the second degradation information to the battery device to cause the battery device to store the second degradation information in the memory.

Abstract: Systems and methods are disclosed for multi-coil wireless power transfer. The system includes a first transmitting coil disposed within a lower portion of a wireless charger, and a second transmitting coil disposed within a side portion of the wireless charger. The system further includes a communications module configured to receive a signal from an information handling system. The information handling system includes a receiving coil. The system additionally includes a transmit module configured to determine an orientation of the receiving coil, and provide a first current to the first transmitting coil and a second current to the second transmitting coil based on the orientation of the receiving coil.

Abstract: A hand tool case holding device includes: a holding device housing, a case accommodating area, and at least one charging coil, which is provided for the purpose of transferring energy into the case accommodating area in a direction perpendicular to a charging surface of the holding device housing. The holding device housing has a case support surface, which is provided for the purpose of causing a support force at least essentially parallel to the charging surface.

Abstract: An electrical energy storage system includes a battery configured to store electrical energy and discharge the stored electrical energy to an external system, a switch electrically connected to the battery and operable to connect the battery to the external system and disconnect the battery from the external system, a sensor configured to measure an open circuit voltage of the battery while the battery is disconnected from the external system, and a controller. The controller is configured to predict usage of the battery at a plurality of future times, schedule a time to disconnect the battery from the external system based on the predicted usage of the battery at the plurality of future times, operate the switch to disconnect the battery at the scheduled time, and obtain a measurement of the open circuit voltage of the battery while the battery is disconnected.

Abstract: A vehicle has a control system configured to perform, and a method for controlling a battery in a vehicle includes, the steps of modifying a state of charge of at least some battery cells in the battery, based on: a vehicle idle state, and the battery having at least a predetermined decay rate. The SOC of the at least some battery cells is modified such that the battery has less than the predetermined decay rate after the SOC is modified.