Abstract: A battery cell unit includes a battery cell and a monitoring and actuation unit for monitoring the function state of the battery cell. A coupling unit is provided in the battery cell unit, in which coupling unit two half-bridges forming a full-bridge are arranged, which half-bridges each comprise a first power semiconductor coupled to a positive pole of the battery cell, a second power semiconductor coupled to a negative pole of the battery cell and a central connection and are connected to a respective other output terminal of the battery cell unit via the respective central connection. The battery cell is configured to operate, in the normal operating mode, the power semiconductors of the half-bridges in such a way that a battery cell voltage of the battery cell is present at the output terminals of the battery cell unit optionally with a positive or negative orientation.

Abstract: A coolant conductivity method and apparatus used to determine when a coolant, circulating through a vehicle's coolant system, starts to conduct electrical current and loses its electrical isolation properties. The system includes a battery monitor controller senses one or more isolation resistances placed throughout a fuel cell system and is programmed to run an isolation algorithm. The isolation algorithm opens and closes contactors in a specific order, measures the resistance of the one or more isolation resistances and calculates a coolant conductivity value. The system will indicate when the coolant needs to be replaced.

Abstract: Evaluation of a battery state comprises transforming a time based history of the load on the battery into a spectral representation of that history in a load domain, e.g., the current domain. The method also comprises comparing the spectral representation to an expected battery capability for the load represented by each line in the spectra and calculating the fraction of the expected capability used at each spectral line. The method still further comprises aggregating the calculated fractions into a total fraction that represents the estimated fraction of the expected battery capability associated with that particular time history.

Abstract: A method for estimating the voltage of a battery element of a battery system is provided. In one embodiment, the method comprises providing a balancing/sensing circuit having a series combination of a balancing switch and a balancing resistive element electrically connected in parallel with the battery element, and measuring the voltage across the balancing switch/balancing resistive element combination when the switch is presumed to be in a “closed” state.” The method further comprises deriving a compensated value for the measured voltage by applying a calculated compensation factor to the measured voltage, the compensated value compensating for a voltage drop occurring in the balancing/sensing circuit when the balancing switch is in the “closed” state and represents an estimate of the battery element voltage. A battery system is also provided that includes a battery element, a balancing/sensing circuit, a sensor, and a control module configured to perform the method described above.

Abstract: A method is disclosed for reducing an influence of voltage ripple on battery test measurements of battery cells coupled in series that form a direct current (DC) bus. A calibration operation is used to obtain a ratiometric difference between first and second series connected battery cells of the DC bus, which is indicative of a variance in their respective output voltages. Voltage measurements across each of the two cells may then be obtained at least substantially simultaneously. The ratiometric difference may be used to modify the voltage measurement taken across the second cell to produce a modified voltage measurement of the second cell. A difference between the measured voltage across the first battery cell and the modified voltage measurement may then be determined, which represents a filtered DC test voltage that has substantially all of the voltage ripple removed therefrom.

Abstract: A method for abnormality detection in an energy unit includes passively detecting an abnormality in an energy unit by detecting electromagnetic radiation generated by the abnormality, the energy unit comprising at least one of an electrical energy unit and an electrochemical energy unit. A method for detecting an abnormality in an energy unit includes (a) applying a signal to the energy unit, (b) performing a plurality of measurements, at a respective plurality of different locations within the energy unit, of a response of the energy unit to the signal, and (c) processing the plurality of measurements to identify the abnormality.

Abstract: A rechargeable battery is used with a plurality of battery cells restrained by a restraint member. After the rechargeable battery has the restraint member removed therefrom and is thus disassembled when the rechargeable battery is subsequently re-restrained by the restraint member and thus reused an internal resistance measurement unit measures the rechargeable battery's internal resistance based on battery data detected after the rechargeable battery is re-restrained. At least for the internal voltage, from a value thereof as measured after the battery is re-restrained an evaluation unit evaluates a value of the rechargeable battery that is reused.

Abstract: An electronic device and a corresponding method for detecting the amount of charge of a battery are provided. The electronic device includes a battery, a detector, and a processor. The battery provides the electric energy needed by the electronic device. The detector detects a parameter of the battery. The parameter is related to the amount of charge of the battery. The detector sends a signal when the parameter changes. The processor obtains the parameter from the detector in response to the signal.

Abstract: A wireless power supply system includes a power transmission device capable of transmitting power to a plurality of power receiving devices by a magnetic field resonance method. The power transmission device includes a detection unit configured to detect an amount of charge of each of the plurality of power receiving devices, a determination unit configured to determine, if the amount of charge of a certain power receiving device is not increased even when a predetermined time has elapsed since start of power transmission to the certain power receiving device, whether a cause of failure to increase the amount of charge is the power transmission device or the certain power receiving device, based on the amount of charge of any other power receiving device detected by the detection unit, and a notification unit configured to transmit a notification about the determination result by the determination unit.

Abstract: A systematic method and system for testing the charging and starting systems of a vehicle, which requires each individual test to pass before proceeding is provided. In addition, the invention incorporates an improved alternator test that determines whether the alternator belt is slipping using data read using a vehicle data port. Further, the invention provides a battery bank test that correlates the voltage before and after a load is applied to the battery bank to the batteries' conditions. When testing the starter, the oil temperature is read via the vehicle data port, allowing for a determination of whether the current draw is abnormally high.

Abstract: Embodiments are disclosed that relate to devices for discharging batteries. For example, one disclosed embodiment provides a battery discharge device including a positive battery contact for forming an electrical contact with a positive battery terminal of a battery, a negative battery contact for forming an electrical contact with a negative battery terminal of the battery, and a battery discharge indicator including a resistive heating material in electrical communication with the positive battery contact and with the negative battery contact, and also including a reversible thermochromic indicator in thermal communication with the resistive heating material.

Abstract: A non-aqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The negative electrode includes a coating derived from lithium bis(oxalate)borate. Assuming that an intensity of a peak attributable to a three-coordinate structure of the coating measured by an XAFS method is represented by a and an intensity of a peak attributable to a four-coordinate structure of the coating measured by the XAFS method is represented by ?, the coating formed on the surface of the negative electrode satisfies a condition of ?/(?+?)?0.4. Accordingly, it is possible to provide a non-aqueous electrolyte secondary battery capable of reliably obtaining the effect due to the formation of a coating.

Abstract: Provided is a highly safe battery device in which the accuracy of an overcurrent detection current value is high. A charge and discharge control circuit includes an overcurrent detecting terminal, an overcurrent detecting circuit for detecting overcurrent of a secondary battery, the overcurrent detecting circuit being connected to the overcurrent detecting terminal, and a constant current circuit for causing a current to flow to the overcurrent detecting terminal.

Abstract: A fuel cell inspection method includes: applying DC voltage of a first voltage value, in a first period, to a power generation element that has an electrolyte membrane, an anode-side catalyst layer disposed on one side of the electrolyte membrane, and a cathode-side catalyst layer disposed on the other side of the electrolyte membrane; and applying, to the power generation element, DC voltage of a second voltage value that is lower than the first voltage value, in a second period after the first period; and detecting a value of current flowing in the power generation element.

Abstract: A process of controlling the temperature of a battery pack includes the steps of determining the operating mode and present temperature of the battery pack. Optimal temperature for the battery pack depends on the operating mode and the difference between the present temperature and the previously identified optimal temperature. The battery pack is warmed if the temperature difference (measured minus optimal) is large. The optimal time interval over which the battery pack should be warmed is a function of the operating mode and the previously calculated temperature difference. A heater is switchably operated enabling and disabling the heat generating element to warm the pack to the previously identified optimal temperature.

Abstract: A test system for a battery module is provided. The system includes a housing having a bottom plate; and first, second, third and fourth side walls coupled to the bottom plate that defines an interior region. The system further includes a mounting fixture that fixedly holds the battery module thereon. The system further includes first, second, third and fourth coupling members. The system further includes a lid coupled to the housing utilizing the first, second, third and fourth coupling members. The system further includes a battery charging system that charges the battery module.

Abstract: A method and system for estimating the state-of-charge (SOC) and state-of-health (SOH) of a battery is disclosed. The method of the invention accurately determines the battery SOC by estimating the values of the recurring constants determined by the battery parameters based on the current and SOC values obtained during the charging and discharging cycle of the battery.

Abstract: A state of charge estimation device for estimating a state of charge of an electric storage device includes a voltage measurement component, a current measurement component, and a controller component. The controller component is configured to, when estimation of state of charge of the electric storage device based on an accumulated amount of currents measured by the current measurement component is defined as a current accumulation method and the estimation based on an open circuit voltage (OCV) of the electric storage device measured by the voltage measurement component is defined as an OCV method, permit estimation of state of charge by the OCV method when a condition that an error in estimation of state of charge of the electric storage device by the current accumulation method exceeds an error in estimation of state of charge of the electric storage device by the OCV method is satisfied.

Abstract: A battery system that can prevent a burst of a battery and a battery safety alarm system therefor are provided. A battery system includes a lithium ion battery formed in a cylindrical shape and including an organic electrolytic solution as an electrolyte. A laser beam source emits a laser beam. An optical fiber of a single mode is wound around an outer circumferential portion of the lithium ion battery in a plurality of lines and via which the laser beam emitted from the light source is transmitted. A detector receives the laser beam transmitted via the optical fiber and detects abnormality of the lithium ion battery on the basis of a loss of the laser beam due to the optical fiber or a change with time of the loss. An alarm warns a user of the abnormality when abnormality of the lithium ion battery is detected by the detector.

Abstract: A battery includes a battery monitoring system for performing a battery self test. The battery monitoring system is integrated into the battery and configured to monitor a first health of the battery. The battery monitoring system is configured to receive an input signal from a wired interface or a wireless interface. The input signal is configured to instruct the battery monitoring system to provide feedback regarding the first health of the battery and/or a second health of the battery monitoring system. The wired interface consists of a positive terminal and a negative terminal of the battery.

Abstract: A battery is provided that includes a battery monitoring system integrated within the battery. The battery monitoring system includes a diagnostic system configured to monitor or store at least one parameter of the battery. Additionally, the battery monitoring system also includes a receiver communicatively coupled to the diagnostic system. Furthermore, the battery monitoring system includes a transmitter communicatively coupled to the diagnostic system and configured to activate upon receipt of a first wireless signal by the receiver and to transmit a second wireless signal indicative of the at least one parameter of the battery.

Abstract: Until an elapse of a predetermined time changed in accordance with a temperature of the secondary battery from the time of IG-off, the battery voltage is detected cyclically, and an open circuit voltage in a state where the polarization is cancelled is sequentially estimated based on a shift of the battery voltage. In a case where the IG switch is turned on after the elapse of the predetermined time, the battery voltage detected at the time of IG-on is assumed to be the open circuit voltage, and then an initial SOC at the time of starting use of the secondary battery is estimated. In a case where the IG switch is turned on before the elapse of the predetermined time, the estimated opening circuit voltage at that time point is regarded as the open circuit voltage, and the initial SOC of the secondary battery is estimated.

Abstract: A battery pack is provided. The battery pack includes first battery cells, a second battery cell coupled to one of the first battery cells, a voltage sensing and balancing circuit for measuring voltages of the first battery cells and for maintaining voltage balance between the first battery cells, a controller that includes an analog-to-digital (A/D) converter, and an analog switch for measuring a voltage value of the second battery cell and for transferring the measured voltage value to the A/D converter. The controller is for controlling charging and discharging of the first and second battery cells. The analog switch includes a flying capacitor, a first switch unit for transferring a voltage between the second battery cell and the flying capacitor, a second switch unit for transferring a voltage of the flying capacitor to the A/D converter, and a first diode for protecting a voltage source from a surge current.

Abstract: A method for disassembling a battery pack to separate a secondary battery which can be reused, without impairing the performance of a secondary battery, having remaining life which, constitutes the battery pack. A pair of holding plates is brought into contact with binding plates on both ends of a battery pack to compress the battery pack in the stacking direction. The open circuit voltage before and after the compression is measured, and based on an amount of change of the open circuit voltage before and after compression, a battery pack which can be reused is separated.

Abstract: A device for charging a battery, or a battery of an electric traction automotive vehicle, based on a three-phase or single-phase power supply network, including a filtering stage including a capacitive assembly and configured to be connected to the power supply network. The device includes a mechanism to monitor capacitive assembly and to detect a deviation in value of the capacitance of at least one capacitor of the capacitive assembly on the basis of voltages and currents measured across the input terminals of the filtering stage.

Abstract: A method of estimating a state of charge (SOC) of a battery and a battery management system (BMS) using the method. According to the method of estimating the SOC of the battery, terminal voltage data is collected by periodically measuring a terminal voltage of the battery. Voltage data of a low frequency component is extracted by performing discrete wavelet transform (DWT) based multi-resolution analysis on the terminal voltage data. The SOC of the battery is estimated based on the voltage data of the low frequency component.

Abstract: A ground fault detection circuit includes: a first switch circuit that connects/disconnects a first path between a positive bus bar and a ground potential section, the positive bus bar being connected to positive electrodes of secondary battery units through a field-effect transistor including a parasitic diode; a second switch circuit that connects/disconnects a second path between a negative bus bar and a ground potential section, the negative bus bar being connected to negative electrodes of the secondary battery units; and a ground fault detection unit that detects a ground fault of the positive bus bar or the negative bus bar based on an electric current flowing through the first path or the second path.

Abstract: The invention relates to a method for determining a characteristic status parameter of a memory unit via an electric circuit arrangement. In the circuit arrangement at least one inductive component and at least one capacitive component are arranged, forming a tuned circuit with the memory unit. The method has the following steps of energizing the tend circuit by temporary charging of the capacitive component, the energizing being carried out by an energizing device electrically supplied by the memory unit, and determining a time-dependent voltage change at the capacitive component after terminating the energizing and determining the characteristic status parameter from the time-dependence of the voltage change. The invention further relates to a corresponding electrical circuit arrangement and an electrical memory, including such a circuit arrangement.

Abstract: The invention relates to a device for measuring an electric current between a vehicle battery and an electrical consumer connected to the vehicle battery. The claimed device includes a bus bar which picks up the electric current in the vehicle battery and guides it further to the electrical consumer, on which a first current sensor and a second current sensor which is different from the first current sensor are arranged, the current sensors being designed to measure, independently from each other, the electric current circulating in the bus bar.

Abstract: A method of testing a secondary battery includes step A of charging the secondary battery to a predetermined charge voltage, step B of setting aside the secondary battery for a predetermined time (tb) after the step A, step C of discharging the secondary battery to a predetermined discharge voltage after the step B, and step D of detecting a battery voltage increase for a preset time (t2) after a predetermined time (t1) has elapsed after the step C. This method of testing a secondary battery can evaluate a measurement of how much the negative electrode active material layer covers the positive electrode active material layer based on the battery voltage increase detected in the step D.

Abstract: A battery management system includes several first measuring units, each associated with at least one respective battery module of the battery to detect a measured variable. The battery management system also includes a control device having a first microcontroller and a second microcontroller, a first communication connection configured to transfer data between the first measuring units and the control device, and several second measuring units configured to detect the measured variable from the battery modules of the battery in addition to the detection of the measured variable by the first measuring units. A second communication connection is used to transfer data between the second measuring units and the control device. The first microcontroller is configured to evaluate measurement data detected by the first measuring units, and the second microcontroller is configured to evaluate measurement data detected by the second measuring units independently of the first microcontroller.

Abstract: A ground fault detection circuit according to the present invention is a ground fault detection circuit that detects the occurrence of a ground fault of a battery that is insulated, and that includes: an AC signal generation section that generates an AC signal; a first capacitive element that couples the AC signal generated by the AC signal generation section to the battery; a voltage division section that voltage divides the AC signal that is coupled to the battery by the first capacitive element; a ground fault detection unit that detects a ground fault of the battery based on an AC component of an input signal; and a second capacitive element that couples the AC signal that has been voltage divided by the voltage division section to the ground fault detection unit as the input signal.

Abstract: A power generation characteristic estimation device for fuel cell includes a reference characteristic setting unit for setting a reference power generation characteristic of a fuel cell, a current detection unit for detecting an actual current of the fuel cell, a voltage detection unit for detecting an actual voltage of the fuel cell, and a characteristic estimation unit for estimating an actual power generation characteristic of the fuel cell based on a voltage difference between a voltage on the reference power generation characteristic and an actual voltage at the actual current. The characteristic estimation unit estimates the power generation characteristic during a warm-up operation of the fuel cell when a pressure of a gas supplied to the fuel cell is not lower than a predetermined value.

Abstract: An energy storage unit connection information acquiring apparatus that acquires information for connecting a plurality of energy storage units in parallel, each energy storage unit including one or more energy storage elements connected in series, the connection information acquiring apparatus including: a connectable range acquiring unit that acquires a connectable range by determining the connectable range that is a range of energy storage units that can be connected in parallel among the plurality of energy storage units; and a charge/discharge information acquiring unit that acquires information for charging or discharging a connected energy storage unit group such that at least one energy storage unit outside the connectable range can be connected in parallel to the connected energy storage unit group that is composed of the energy storage units in the connectable range that are connected in parallel.

Abstract: The present invention discloses a battery tester having high precision, which has a casing having an input device and two detecting wires, a microprocessor, a variable loading unit and a battery power status detecting unit. The microprocessor builds a strategic decision process therein to determine a proper resistance of a load for a battery according to the battery capacity, initial voltage and detection requirements having 1/N CCA and loading time. When the resistance of the load is determined, the microprocessor adjusts a resistance of the variable loading unit equal to the resistance of the load for the battery. Therefore, the battery tester does not use the load with the fixed resistance to detect batteries with different capacities and has accurate detecting results.

Abstract: A lighting apparatus of the present invention includes: a light source; a power source unit arranged to power the light source; a detector unit arranged to detect the deterioration of ability of the power source unit to power the light source; and a determination unit arranged to determine the life of the power source unit in response to the detector unit.

Abstract: The present invention discloses a battery lease and exchange system for a vehicle owner to make a stop at a battery refueling station where the battery on the car that has already had a low capacity is quickly removed and another battery that is fully charged is installed such that the battery “refueling” process may be executed quickly without being limited by the speed of recharging the batteries.

Abstract: An electric storage device monitor includes a measurement unit detecting and obtaining a detected value, a power supply switch portion switching a power supply state of the monitor between a monitoring state and a low power consumption state, a wakeup timer to which an actuation time is set and starting counting time in response to switching to the low power consumption state and continuing counting time and outputting an actuation signal if reaching the actuation time, and a control unit. The switch portion switches from the low power consumption state to the monitoring state every time the wakeup timer outputs the actuation signal. The control unit controls the measurement unit to detect and obtain the detected value in the monitoring state, compares the detected value and a reference value, and changes the actuation time according to a comparison result of the detected value and the reference value.

Abstract: Provided is an insulation resistance measuring circuit including: a source resistor unit including a first source resistor connected between a positive terminal of a battery and a second source resistor and the second source resistor connected between a negative terminal of the battery and the first source resistor; a voltage sensing unit sensing a voltage of the first source resistor as a first voltage and sensing a voltage of the second source resistor as a second voltage; and an insulation resistance measuring unit measuring an insulation resistance of the battery through a value obtained by dividing a difference between the first and second voltages by a sum between the first and second voltages.

Abstract: Systems and methods for determining the target thermal conditioning value to control a rechargeable energy storage system. Target thermal conditioning values are determined using a required thermal power value and a heat generation value in order to appropriately condition the RESS for heating and cooling.

Abstract: An electronic circuit and/or method that determines a type and/or size of a battery in a light and controls operation of a light source may comprise: a circuit measuring the voltage of the battery; and a processor for determining the measured battery voltage. The processor may compare the measured battery voltage and a predetermined voltage and set an operating condition of the light source based upon the difference between the measured battery voltage and the predetermined voltage. The processor may apply a predetermined load to the battery for a predetermined time and measure battery voltage during the predetermined time; and determine the difference between the measured voltage of the battery and the measured battery voltage during the predetermined time.

Abstract: The present disclosure provides a detection device for lithium-ion battery, which comprises an insulative housing having a receiving chamber; an insulative separator positioned between the positive electrode sheet and the negative electrode sheet when the positive electrode sheet and the negative electrode sheet are received in the receiving chamber; a positive electrode sheet conductive fastener passing through the insulative housing and fixedly connected to a positive electrode current collector at a positive electrode current collector non-film-coating region; a negative electrode sheet conductive fastener passing through the insulative housing and fixedly connected to a negative electrode current collector at a negative electrode current collector non-film-coating region; an insulative cover engaged with the insulative housing and the insulative separator; a positive electrode region detection hole communicated to the positive electrode sheet gas region; and a negative electrode region detection hole comm

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: The present invention relates to an electric energy storage device such as a capacitor, a secondary battery, or the like, and more particularly, to an electric energy storage device capable of improving high output characteristics by using a voltage terminal The electric energy storage device according to an exemplary embodiment of the present invention includes a positive electrode and a negative electrode storing electric energy and a positive current terminal and a negative current terminal connected to the positive electrode and the negative electrode to apply current; and a positive voltage terminal and a negative voltage terminal connected to the positive electrode and the negative electrode to detect voltage across the positive electrode and the negative electrode, wherein the charging or discharging operation is controlled by using the detected voltage across the positive electrode and the negative electrode as control voltage.

Abstract: A method of checking deterioration of a battery includes: measuring a power input by a charger in a specific SOC range, when the battery is being charged; and determining a current deterioration rate of the battery by applying the measured power to a function having, as an input, a power input in the specific SOC range and, as an output, a deterioration rate of the battery.

Abstract: There is provided a storage cell state notifying system capable of properly determining a frequency to notify a state of a storage cell being monitored. The storage cell state notifying system includes a storage cell state measuring means 81, a frequency determining means 82, and a storage cell state notifying means 83. The storage cell state measuring means 81 measures a state of the storage cell. The frequency determining means 82 determines a frequency to notify the measurement result depending on the amount of change in the measured state. The storage cell state notifying means 83 notifies information indicating the state of the storage cell at the frequency determined by the frequency determining means 82.

Abstract: The instant disclosure is directed towards methods of determining green electrode quality via electrical resistivity measurements on green electrode forms (e.g. prior to baking) The instant disclosure is directed towards methods of making electrodes, utilizing the electrical resistivity measurement(s) from green anodes to monitor and if necessary, adjust electrode processing parameters (e.g. composition, mixing parameters, forming parameters, or baking parameters).

Abstract: A method for monitoring the remaining service life of a battery used for operating a field device in automation technology. The present power consumption of the battery is ascertained. Then, during a first phase of life, power consumption of the battery ascertained during operation of the field device is compared with a predetermined threshold value. In the case of exceeding the predetermined threshold value, during a second phase of life, the battery is exposed to defined load spikes at predetermined time intervals. Voltage collapses corresponding to the defined load spikes are detected, and a warning report is generated when the voltage collapses reach a predetermined maximum limit value.

Abstract: An electrochemical cell is provided. The electrochemical cell comprises a cathode compartment, wherein a metal in a solid form is disposed in the cathode compartment. The electrochemical cell further comprises a separator, an anode compartment, and at least one contact device disposed in the cathode compartment or in the anode compartment. The contact device is suspended from the top of the electrochemical cell in the cathode compartment or in the anode compartment. The electrochemical cell is in a ground state. An electrochemical cell during its working is also provided. Methods for using and manufacturing the electrochemical cell are also provided. The electrochemical cell is used to determine a state-of-charge of a source.

Abstract: Disclosed herein is a method for diagnosing a fault of a fuel cell stack, the method including: applying a summed current obtained by summing first and second frequencies to the fuel cell stack; diagnosing whether or not a fault has been generated in the fuel cell stack using a higher frequency of first and second frequencies of output voltages of the fuel cell stack; and reconfirming whether or not the fault has been generated in the fuel cell stack using the first and second frequencies in the output voltage of the fuel cell stack.