Abstract: A battery pack includes a secondary battery, a circuit having a consumer consuming power of the battery, terminals charging or discharging the pack, a switch that, when the voltage of the battery reaches the discharge cutoff voltage, is opened to stop discharge of the battery through the terminals, and a controller performing a first discharge operation activating the circuit and causing the consumer to consume a remaining power of the battery until a voltage of the battery reaches a first threshold value, higher than the discharge cutoff voltage, and stopping, when the voltage of the battery reaches the first threshold value, the first discharge operation. The controller also performs a second discharge operation activating the circuit and causing the consumer to consume the remaining power of the battery until the voltage of the battery reaches a third threshold value, lower than the discharge cutoff voltage.

Abstract: An electrical combination. The combination comprises a hand held power tool, a battery pack and a controller. The battery pack includes a battery pack housing connectable to and supportable by the hand held power tool, a plurality of battery cells supported by the battery pack housing, each of the plurality of battery cells having a lithium-based chemistry, being individually tapped and having an individual state of charge. A communication path is provided by a battery pack sense terminal and a power tool sense terminal. The controller is operable to monitor a state of charge of a number of battery cells less than the plurality of battery cells and to generate a signal based on the monitored state of charge of the number of battery cells less than the plurality of battery cells, the signal being operable to control the operation of the hand held power tool.

Abstract: A power storage system according to the present technology includes: a parameter detector that detects a parameter of a secondary battery; a table storage unit that stores a table indicating a correspondence between a parameter of the secondary battery and a charging condition; and a charging control unit configured to refer to, based on the detected parameter, a corresponding charging condition from the table and make control to charge the secondary battery in this charging condition.

Abstract: A battery level management system for an electric vehicle during a powered down and uncharged period is disclosed. A current output from a low voltage battery of the electric vehicle being above a threshold can be sensed to wake up a control unit associated with the low voltage battery without waking up or fully powering other control units. Upon waking up, the control unit associated with the low voltage battery can start monitoring the current output from the low voltage battery and controlling the power drawn from the low voltage battery by enabling or disabling other control units to manage the remaining low voltage battery power level.

Abstract: A failure in any of first switches is determined based on a voltage value of a battery assembly and a predetermined threshold. The voltage value is retained in a capacitor by turning on or off the first switches and a second switch, and obtained from a voltage detector a voltage value.

Abstract: A method and apparatus is provided the battery sensor for a large-scale battery system. More specifically, the present disclosure relates to the architecture and measurement scheme for a high-accuracy battery voltage sensor based on a calibration scheme. The present disclosure also related to the architecture and measurement method for a cell-level current sensor to effectively and reliably manage a battery pack.

Abstract: An electronic battery sensor and a method for determining an internal resistance of a battery, including at least one first detector for detecting measured values, and a battery model for ascertaining the internal resistance. Each measured value includes simultaneous information concerning at least two corresponding measured variables, in particular battery current and battery voltage, and every two successive measured values represents a measuring pair. The battery sensor includes at least one selector which is configured for selecting from a specified number of measuring pairs at least one measuring pair as a selection pair, and for providing the selection pair to the battery model in order to ascertain the internal resistance, the number of measuring pairs being greater than the number of selection pairs.

Abstract: A broken conductor detection method and apparatus are disclosed. In one embodiment, the apparatus includes a measurement module to measure, at a node of a distribution system, a voltage value of each distribution feeder of the distribution system; a check module to check whether the measured voltage value of each distribution feeder is less than a voltage threshold used for the distribution feeder, the voltage threshold used for the distribution feeder being calculated based on a mean value of measured voltage values of other distribution feeders in the distribution system; a generating module to, upon a checking result indicating that a measured voltage value of a distribution feeder of the distribution system is less than the voltage threshold used for the distribution feeder, generate a signal indicating that the distribution feeder of the distribution system has a broken conductor; and a sending module to send the generated signal.

Abstract: A performance testing apparatus of a fuel cell is provided. The apparatus includes a moving body that stacks at least one unit cell and is installed to be movable along a predetermined transporting path on a frame. A pressurizing unit is mounted to the frame, presses the unit cell on the moving body moved from a beginning stage side of the transporting path, and supplies a reaction fluid to the unit cell. A terminal connection part is mounted to the pressurizing unit side the frame and connects a terminal to output a voltage of the unit cell to the unit cell.

Abstract: A semiconductor device for measuring a voltage of a battery cell, including first and second nodes, and first and second battery voltage measurement units. The first node is configured to receive a first voltage, the first voltage being a voltage of a capacitor that accumulates an electric charge based on the voltage of the battery cell. The first battery voltage measurement unit measures the first voltage through a first path. The second node is configured to receive a second voltage based on the voltage of the battery cell, the second node being different from the first node. The second battery voltage measurement unit measures the second voltage through a second path that is different from the first path.

Abstract: A communication control method according to one embodiment comprises transmitting, by a first base station configured to manage a cell, a message to a second base station in a specific procedure; and storing, by the second base station that receives the message, information included in the message by associating with the cell. The information includes at least one of information related to a cell size of the cell and information related to a capability of the cell for dual connectivity communication.

Abstract: A device body in one aspect of the present disclosure comprises a motor, a current path, a positive terminal, a negative terminal, a device-side signal terminal, a temperature information detector, a current detector, and a correction unit. The correction unit is configured to correct temperature information based on a current value of a conducting current, so as to reduce an influence given to the temperature information by the conducting current.

Abstract: The disclosure includes a system and method for providing charging services to mobile client devices. The system includes a processor and a memory storing instructions that, when executed, cause the system to: estimate a departure time of a future journey associated with a mobile client device; verify one or more electrical characteristics of a battery associated with the mobile client device; determine a target state of charge for the battery at the departure time; and determine a charge scheme to improve an operational life of the battery. The charge scheme has a combining charge cost that satisfies a charge objective of the mobile client device. The combining charge cost includes a weighted combination of a power cost and a battery degradation cost. The charge scheme is configured to charge the battery to achieve the target state of charge at the departure time.

Abstract: An electrical apparatus includes a battery and an adjustable circuit. The adjustable circuit is configured to adjust a load current in the electrical equipment when battery impedance for the battery is higher than a predetermined threshold battery impedance. The battery impedance for the battery is compared in a session against the predetermined threshold battery impedance and the load current is adjusted in the session when the predetermined threshold battery impedance is higher than the predetermined threshold battery impedance.

Abstract: A medical infusion pump and a method for logging a power source voltage of a medical infusion pump are disclosed. The medical pump may include a power source, a processor, and a voltage supervisor which responds if a voltage (VDD) drops to a response voltage level which is above a reset voltage level of the processor. When the voltage supervisor responds, the processor start logging the voltage (Vbat) of the power source in a memory, thus generating a voltage log. The memory maintains the logged data when the power supply by the power source is interrupted, thus enabling retrospective analysis of the voltage log.

Abstract: A battery operated portable communication device provides converged functionality while avoiding resets to the device. Composite logic circuitry formed of at least one comparator and a logic interface controls current limiting to a primary load formed of high power land mobile radio (LMR) devices and programming to secondary loads formed of non-LMR peripherals. At least one current limit control signal is used to control current to the primary load under high current mode operations. Another control signal provides an interruption alert to a slave processor for controlled programming of the secondary loads during the high current operations of the primary load. Current to the primary load is restored while the secondary load is interrupted. Operation of secondary load processes is resumed when the primary load ceases high power operation.

Abstract: An assembled-battery system, a semiconductor circuit, and a diagnostic method enables appropriate self-diagnosis of a measuring unit. An output value (A-B) output from an analog-to-digital converter through power-supply lines, a cell-selection switch, and a level shifter is summed with an output value (B-VSS) obtained by a directly input reference voltage B being output from the analog-to-digital converter. When the summed value is considered equal the reference voltage A—the voltage VSS, it is diagnosed that an abnormality such as a breakdown has not occurred.

Abstract: A determining device determining electrical leakage in a specified circuit having a voltage source, includes: an AC-signal-output unit that outputs an AC signal to a signal line connected to the specified circuit; a detecting unit that detects a peak value of the AC signal; and a determining unit determining electrical leakage of the specified circuit based on the peak value. The specified circuit includes switching elements switching the connection between the voltage source and a specified voltage to be conduction or blocking; and a determining device prohibits overlapping of the point of time when the switching elements are switched from conduction to blocking or the point of time when switched from the blocking state to the conducting state, and the period from the point of time when the AC-signal-output unit starts outputting the AC signal until the detecting unit detects the peak value of the AC signal.

Abstract: A control apparatus for a hybrid vehicle including an internal combustion engine, a motor, and a storage battery and configured to charge the storage battery with electric power generated as a result of regenerative braking and electric power generated by using output of the engine. The control apparatus executes a downhill control which decreases the remaining capacity of the storage battery before the vehicle enters a downhill section and executes a congestion control which increases the remaining capacity before it enters a congestion section. In addition the control apparatus determine which control is to be executed according to the positional relation between the start point of the downhill section and the start point of the congestion section when both a downhill section and a congestion section are contained in a planned travel route of the vehicle.

Abstract: A battery monitoring device includes a first voltage measurement unit, a second voltage measurement unit, a current measurement unit, a cell voltage ratio calculation unit, a cell voltage calculation unit, and a trigger signal generation unit. The cell voltage ratio is a ratio of an individual cell voltage measurement value to a total sum of all cell voltage measurement values. The cell voltage measurement value is equal to the cell voltage ratio multiplied by the total voltage of all of the battery cells constituting the battery pack.

Abstract: A semiconductor device is performed a cell voltage measurement control for measuring each cell voltage of each target battery cell among a plurality of battery cells connected in series, using a difference voltage output circuit having first and second input terminals. In the measurement control, first and second connection states are formed with respect to each target battery cell so that each cell voltage is sequentially measured. Anode and cathode of each target battery cell are connected to the first and second input terminals in the first connection state, respectively, and the anode and cathode are connected to the second and first input terminal in a second connection state, respectively. Among the first and second connection states, a connection state that is first formed for a current target battery cell is the same as a connection state that has been last formed for a previous target battery cell.

Abstract: Electrical drain test systems and methods are disclosed. An example electrical drain test device includes a battery interface design with electrical cables to connect in-line with a battery and an electrical system under test. The example electrical drain test device also includes a battery disconnect switch. The switch has a first position to electrically connect the battery and the electrical system. The switch also has a second position to electrically connect the electrical system under test to the battery through a test circuit to test the electrical system under test for parasitic drain. The example electrical drain test device includes an output device to output a conclusive pass/fail result of the test of the electrical system by analyzing current curves through predetermined criteria programmed into the device.

Abstract: An engine generator includes a generator body connected to an engine, a converter including rectifiers that convert an output from the generator body to DC current, an inverter that converts an output from the converter to AC current, an input voltage detector that detects an input voltage from the generator body to the converter, and an AC current detector that detects an AC current output from the inverter. An abnormality in the engine generator is determined if a state that a current detected by the AC current detector is not higher than a first threshold value and a duty ratio of a voltage detected by the input voltage detector is not higher than the second threshold value continues for a first predetermined time; or if the current detected by the AC current detector is not higher than a third threshold value and the duty ratio change rate is not higher than a fourth threshold value.

Abstract: A learning alarm includes a sensor operatively connected to a processor to detect environmental properties and an alarm operatively connected to the processor to provide an alert if the environmental properties are outside an acceptable range. A user interface is operatively connected to the processor to accept user input indicating an alert corresponds to a nuisance condition. A memory is also operatively connected to the processor for storing detected environmental properties corresponding to the nuisance condition. The processor is configured to suppress alerts from the alarm based on detected environmental properties corresponding to the environmental properties of the nuisance condition stored in the memory.

Abstract: A method for cycling a lithium-sulphur cell, said method comprising discharging a lithium-sulphur cell, terminating the discharge when the voltage of the cell reaches a threshold discharge voltage that is in the range of 1.5 to 2.1V, charging the lithium-sulphur cell, and terminating the charge when the voltage of the cell reaches a threshold charge voltage that is in the range of 2.3 to 2.4V, wherein the lithium-sulphur cell is not fully charged at the threshold charge voltage, and wherein the lithium-sulphur cell is not fully discharged at the threshold discharge voltage.

Abstract: An object of the present invention is to provide an apparatus for inspecting an all-solid battery with which a battery capacity where a voltage abnormality occurs can be grasped before the voltage abnormality occurs. The present invention is an apparatus for inspecting an all-solid battery including a storage section storing a relationship between the battery capacity where the voltage abnormality occurs and a resistance of the all-solid battery, and a resistance calculation section calculating the resistance based on a current and voltage in charging the all-solid battery, wherein the battery capacity where the voltage abnormality occurs in the all-solid battery is calculated from the relationship stored in the storage section and the resistance calculated in the resistance calculation section.

Abstract: A system includes a battery; an analog-to-digital converter coupled to the battery and capable of measuring an output voltage of the battery; a processor, receiving measured battery output voltages from the analog-to-digital converter; the processor using a first equivalent circuit model of the battery to estimate battery current when the battery operation is static; and the processor using a second equivalent circuit model of the battery to estimate battery current when the battery operation is dynamic.

Abstract: A monitoring device for a battery, a lithium-ion battery with the monitoring device and a method for the monitoring of a battery, wherein the battery is provided with a plurality of cell composites comprising a number of mutually parallel-interconnected battery cells. The cell composites are also interconnected by means of electrical cell couplers, and one or more temperature sensors are arranged between the cell composites. Where a voltage drop across one or more of the battery cells on the electrical cell couplers exceeds a predetermined value and, simultaneously, a temperature occurs on at least one of the temperature sensors which exceeds a predetermined value, a fault signal is generated. The defective battery cell can then be isolated from the cell composite.

Abstract: A battery temperature monitoring circuit, which has a cold comparator and a hot comparator, achieves high accuracy in a small cell size by utilizing a cold current optimized for the cold comparator and a cold reference voltage, and a hot current optimized for the hot comparator and a hot reference voltage, along with switching circuitry that provides the cold current to the cold comparator as the battery temperature approaches the cold trip temperature, and the hot current to the hot comparator as the battery temperature approaches the hot trip temperature.

Abstract: A series-parallel battery system with a buffer resistor coupled to each junction of batteries or battery cells. Buffer resistors on the same row are coupled to a measurement node. Terminals of the battery system and the measurement nodes are treated as measurement points that are coupled to a conventional battery management unit. The buffer resistors provide a means for limiting in-rush current and a means for maintaining voltage balance across the row of batteries in the parallel columns of batteries. A control unit in series with each series of batteries monitors current in the series and comprises a switch to deactivate the column when the current exceeds a set of predetermined current levels.

Abstract: A nonvolatile memory device includes a memory cell, and a switching unit. The memory cell includes a cell transistor having a floating gate and a coupling capacitor connected to the floating gate. The switching unit is coupled between the coupling capacitor and a bias terminal, and switches on or off based on the comparison result between a cell current flowing through the memory cell with a reference current during a program operation for programming the memory cell.

Abstract: Provided is a battery degradation detection device that detects the degradation state of a battery installed on a vehicle. The battery degradation detection device includes: a flag setting unit that sets, each time the vehicle is started, a flag indicating a sign of degradation of the battery on the basis of a voltage value of the battery at the start of the vehicle; a flag storage unit that stores the flag; a sign-of-degradation determination unit that determines whether or not the battery shows a sign of degradation on the basis of the number of times the flag has been stored in the past; and a degradation determination unit that determines whether or not the battery is in a degradation state on the basis of the voltage value of the battery when it is determined by the sign-of-degradation determination unit that the battery shows a sign of degradation.

Abstract: A stress shield for a plastic integrated circuit package is disclosed. A shield plate is attached by an adhesive to a top surface of an integrated circuit die such that the shield plate covers less than all of the top surface and leaves bond pads exposed. A molding material is applied over the shield plate and the integrated circuit die. The shield plate shields the integrated circuit die from stresses imparted by the molding material.

Abstract: A lamp oscillator which outputs a sawtooth wave signal to be compared with an error signal of an output voltage in order to generate a PWM signal. The oscillator includes a first charging current changing circuit, in which a current amplifier converts a differential voltage between the error signal and a reference voltage into a current and outputs the converted current. When the load of a switching power supply circuit is heavy, a capacitor is charged with a constant current and generates a sawtooth wave signal having a predetermined slope. During a light load, the first charging current changing circuit adds the current, which increases as the load becomes lighter, to the current to thereby make the slope of the sawtooth wave signal steeper.

Abstract: It should be possible in a motor vehicle having an electric drive to allow a deep discharge of the electrochemical energy storage device by a control input (S18), which is otherwise forbidden. In the present case, it is counted how often the deep discharge has occurred, and an event is preferably triggered when a threshold value (i-limit) has been reached for a predetermined number of times, specifically a warning signal is outputted and/or the subsequent deep discharge is blocked (S26).

Abstract: Improved mechanisms for automated control of harvested energy delivery are described. A device harvests and stores energy and activates a controller when a sufficient level of stored energy is achieved. The controller retrieves previous power-off state information determines status information, and activates and powers a powered device. Just before insufficient energy remains to power the powered device, the controller stores shutdown status information and enters a power-off state.

Abstract: A shovel includes: an engine generating a drive power; a generator performing a generating operation using the drive power transmitted from the engine; an electric accumulator having a plurality of electric storage cells in which an electric power generated by the generator is accumulated, the electric accumulator supplying an electric power to an electric load of the shovel; and an equalizing circuit provided to each of the electric storage cells and including a discharge resistor and a switching circuit in order to equalize capacitances of the electric storage cells. A determination is made as to whether to activate the equalizing circuit based on a variation in outputs of the electric storage cells.

Abstract: A system and method for identifying and responding to exceptional charge events of series-connected energy storage elements.

Abstract: The described method and system provides for dynamic adjustment of the lower charge threshold of an electrically-powered vehicle to allow a vehicle low on battery charge to continue to be operated. The vehicle's telematics unit monitors the charge level via the vehicle bus or other vehicle resources to determine if the vehicle is running low on electric charge. If the telematics unit determines that the charge level is approaching, meets or falls below the lower threshold, the telematics unit communicates the vehicle position to a call center along with vehicle identification data. The call center determines the amount of charge required to reach one or more local charging stations or other points of interests and proposes destination recommendations to the driver. The driver may then select one of the recommendations, and the call center transmits a new lower charge threshold to the vehicle.

Abstract: A charging device for use with an electric vehicle including a power storage device. The charging device includes a power conduit configured to electrically couple the power storage device to the charging device. The charging device includes a first protection device configured to electrically isolate the charging device from the power storage device if a current flowing through the power conduit exceeds a current limit. The charging device also includes a controller configured to control the current flowing through the power conduit if the current flowing through the power conduit causes an integration threshold to be exceeded, wherein the integration threshold is representative of a predetermined amount of current that is enabled to flow through the power conduit over a predetermined period of time.

Abstract: A battery pack, which supplies power to an electronic apparatus, includes a battery cell, a charger configured to receive power from an external source, and charge the battery cell by using the supplied power, and a charge controller configured to, when a voltage of the battery cell is lower than a predetermined first voltage even though the battery cell has a problem, control the charger to charge the battery cell.

Abstract: A battery ECU provides an N-th arithmetic processing device with an ID assignment signal. The N-th arithmetic processing device receives the ID assignment signal, and stores an ID that is transmitted by the battery ECU. The battery ECU provides an i-th arithmetic processing device (i is a natural number from N to 2) with a command for providing an ID assignment signal. The i-th arithmetic processing device provides the (i?1)-th arithmetic processing device with the ID assignment signal in response to the command for providing an ID assignment signal. The (i?1)-th arithmetic processing device receives the ID assignment signal, and stores an ID that is transmitted by the battery ECU.

Abstract: A method for manufacturing a sealed battery (10) includes the steps of: measuring a voltage of the sealed battery (10) when a charging current of a predetermined value or more is caused to flow to the sealed battery (10) for a predetermined time after initial charging of the sealed battery (10); and determining whether a battery case (11) of the sealed battery (10) is damaged or not based on a change in the measured voltage. When an inclination of the voltage increases in a time change of the measured voltage, it may be determined that a recess (12) is present in the battery case (11) of the sealed battery (10).

Abstract: A battery system monitoring apparatus that monitors a battery system is provided having a cell group having a plurality of unit cells connected in series, including: a first control device that controls the cell group; and a plurality of voltage detection lines that connect positive electrodes and negative electrodes of the unit cells to the first control device, for measuring inter-terminal voltages of the unit cells. The first control device includes a balancing switch connected between the voltage detection line connected to the positive electrode of each unit cell and the voltage detection line connected to the negative electrode thereof for conducting balancing discharge of the unit cell, for each of the unit cells. A first resistor is disposed in series with each of the voltage detection lines, a first capacitor is connected between the voltage detection line, and a GND which is a lowest-level potential of the cell group.

Abstract: A device for measuring a minimum cell voltage among cell voltages of a plurality of battery cells connected in series includes a plurality of ohmic resistors connected in series. The device is configured to be connected to a plurality of battery cells connected in series in such a way that a respective battery cell of the plurality of battery cells is associated with each ohmic resistor of the plurality of ohmic resistors according to the series connections. Each ohmic resistor of the plurality of ohmic resistors, with the exception of a first ohmic resistor, is configured to conduct the smaller of a current that corresponds to the cell voltage of the associated battery cell and the current that is conducted by a preceding ohmic resistor in the series connection.

Abstract: A method of charging a battery pack is provided. The method includes: electronically connecting a battery pack to a charger; detecting information regarding the battery pack; determining an appropriate charging regime based on the detected information; and applying the charging regime to the battery pack. A battery charger may also provided. The battery charger includes: a first terminal for connecting to a battery pack; a second terminal for connecting to a battery pack, a microprocessor operatively connected to the terminals and configured to receive a signal from at least one terminal regarding a battery pack connected to the terminal and control the charger to select and apply a charging regime to the battery pack according to the signal.

Abstract: A switch failure diagnosis device for using in a current path between an electric device and an electric storage device includes plural switches, a switch terminal voltage detector, and a controller. The switches are connected parallel to each other in the current path. The switch terminal voltage detector outputs a switch terminal voltage detection signal. The controller is configured to: select the switches at different time in sequence and input an open instruction signal to each switch at the time when the switch is selected; and determine, based on the switch terminal voltage detection signal output while the open instruction signal is given, that at least one of the switches has a failure if the detected voltage is in a failure determination range.

Abstract: A distributed battery management device and a method thereof are provided. The method comprises: receiving, by a battery management control module, a first identification distribution request from a first data acquisition module; activating, by the battery management control module, the first data acquisition module for monitoring one or more batteries; and sending, by the battery management control module, a first identification message corresponding to the first identification distribution request, to the first data acquisition module. The device comprises: a battery management control module; and a first data acquisition module communicatively coupled with the battery management control module, wherein the battery management control module and the first data acquisition module are configured to communicate with each other to identify the data acquisition module.

Abstract: A switch failure diagnosis device for using in a current path between an electric device and an electric storage device includes plural switches, a switch terminal voltage detector, and a controller. The switches are connected parallel to each other in the current path. The switch terminal voltage detector outputs a switch terminal voltage detection signal. The controller is configured to: select the switches at different time in sequence and input an open instruction signal to each switch at the time when the switch is selected; and determine, based on the switch terminal voltage detection signal output while the open instruction signal is given, that at least one of the switches has a failure if the detected voltage is in a failure determination range.

Abstract: The present invention provides a control method for an electric vehicle, comprising the steps of: measuring a current voltage of a battery cell module and an external temperature immediately before or after a start of charging; determining whether or not charging has been completed by measuring a charging voltage of the battery cell module after charging during a predetermined time set according to at least one of the current voltages and the external temperature; and calculating a voltage variation on the basis of the current voltage and the charging voltage if it is determined that charging has been completed, and determining whether the battery cell module is normal or abnormal on the basis of the voltage variation and a set reference voltage variation.