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9030205 Electric leakage detecting apparatus  
An electric leakage detecting apparatus includes: a first voltage-dividing circuit; a second voltage-dividing circuit; a first switch which is inserted in a line connecting the first...
9018956 Apparatus and method for diagnosing abnormality in cell balancing circuit  
Disclosed is an apparatus and method for diagnosing an abnormality in a cell balancing circuit in a battery pack including a plurality of cells corresponding to each cell balancing circuit. The...
9013151 State-of-charge estimation apparatus  
A state-of-charge estimation apparatus connected to a power storage device having cell batteries, and estimating a state of charge of the power storage device, the apparatus including a first SOC...
9007067 Apparatus and method for estimating battery condition of battery pack by solely monitoring one selected battery cell  
A battery condition estimating apparatus for a battery pack having a plurality of battery cells connected in series includes an analog channel switching circuit and a battery gas gauge circuit....
9007068 Method for detecting an electrical fault in an electrical network of a motor vehicle  
A method is provided for current-based detection of an electrical fault in an electrical network of a motor vehicle, the network having at least: one battery, one pulse-controlled inverter, one...
8988078 Voltage monitoring system and voltage monitoring module  
In a voltage monitoring system, a voltage monitoring module includes an adjusting current control circuit to generate an adjusting current so that the operating current consumed by the voltage...
8981783 Cell monitoring device for electric storage module, non-transitory computer readable medium storing computer-readable instructions for detecting discontinuity of electric lines, and method of detecting discontinuity of electric lines  
A cell monitoring device for monitoring cells connected in series in an electric storage module includes electric lines, switches connected in parallel to the cells, respectively, via the electric...
8952702 Fuel cell system  
A fuel cell system includes a fuel cell, a multiphase voltage conversion device with N-phases (N being an integer equal to or larger than two) that is connected to the fuel cell, a control signal...
8941386 Busbar for battery electrode post connection and battery voltage monitor using the same  
A busbar for battery electrode post connection with a terminal for voltage detection is provided. Both ends of a length direction of a rectangular thin plate of a conductive metal are left and an...
8930070 Method for determining the charge state of a battery pack  
A method for determining the charge state of a battery pack consisting of a number ā€œNā€ of individual battery cells, includes determining the charge state of each individual battery cell SOCi for...
8928328 Testing device for solid oxide fuel cell  
A testing device for solid oxide fuel cell (SOFC) is disclosed. The testing device which combines the original cell housing with a four-point probe equipment is set for measuring SOFC MEA. The...
8902072 Apparatus and method for diagnosing abnormality in cell balancing circuit  
Provided are an apparatus and a method for diagnosing an abnormality in a cell balancing circuit. The apparatus may include a plurality of cell balancing circuits respectively connected to a...
8896315 Battery cell balancing system and method  
A battery cell balancing system is operable to utilize a relatively small number of transformers interconnected with a battery having a plurality of battery cells to selectively charge the battery...
8896273 Battery apparatus for controlling plural batteries and control method of plural batteries  
Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the...
8878541 Battery voltage monitoring circuit  
A battery voltage monitoring circuit includes a first power supply terminal to be connected to the positive terminal of a battery pack having rechargeable cells connected in series; a first supply...
8872380 Energy storage system  
An energy storage system includes a plurality of battery units; a plurality of thermistors detecting a temperature of the plurality of battery units; a multiplexer performing multiplexing on the...
8860422 Method for detecting the voltage in battery cells  
The invention relates to an evaluation circuit for detecting the voltage in battery cells of a battery system which are preferably connected in series. The evaluation circuit includes serially...
8860421 Cell voltage measuring apparatus and method of battery pack having multiplexers to output voltage signal of each cell  
A cell voltage measuring apparatus of a battery pack comprises a plurality of multiplexers connected corresponding to each cell group of the battery pack and operated to output a voltage signal of...
8836341 Semiconductor circuit, semiconductor device, method of diagnosing abnormality of wire, and computer readable storage medium  
There is provided a semiconductor circuit including: a selection circuit, to which are connected batteries in series, and which selects any one of the batteries; a difference detecting circuit, to...
8829717 Battery control device and battery system  
A battery control device for a battery module includes a plurality of integrated circuits. Each integrated circuit includes: a constant voltage circuit that lowers a total voltage of a battery...
8802260 Separation method of secondary battery  
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...
8803528 Apparatus and method for measuring current and voltage of secondary battery pack in synchronization manner  
Provided is an apparatus for measuring current and voltage of a secondary battery pack in synchronization manner, comprising a voltage measurement circuit for periodically measuring and outputting...
8773070 Apparatus and method for balancing charge capacity of battery cell  
An apparatus for balancing charge capacity of battery cell includes a voltage sensing/discharging circuit having a battery with cell group, a switching unit for selectively connecting both...
8760169 Operational amplifier with different power supply voltages  
An operational amplifier with different power supply voltages includes an input stage and an output stage. The input stage includes a current source for providing a bias current, and a...
8754654 Power supply device for detecting disconnection of voltage detection lines  
A power supply device includes battery units. Each unit includes a battery block, a voltage detector, a power supply circuit, and a disconnection detector. The block includes serially-connected...
8751176 Apparatus for monitoring battery voltage and temperature  
An apparatus for monitoring battery voltage and temperature includes a host controller and acquisition boards, and every acquisition board for the battery includes a voltage acquisition module, a...
8749244 Circuit for monitoring of accumulator cells connected in series  
In one embodiment, a circuit includes a measuring circuit coupled to an accumulator cell. A first output of the measuring circuit outputs a current signal based on a cell voltage of the...
8738309 Battery pack maintenance for electric vehicles  
A method of repairing a used battery pack from an electric vehicle include removing the battery pack from the vehicle. Battery tests are performed on at least some of the plurality of batteries...
8729904 Method and system for safe operation of large lithium-ion batteries  
Modeling and testing are used to characterize consequences of a first lithium-ion cell having an internal short. The vulnerability of a second lithium-ion cell being induced into thermal runaway...
8710961 Anti-fake battery pack and identification system thereof  
An anti-fake battery pack and an identification system thereof has a casing and multiple battery cells, each of which as a battery body, an inner identifier mounted outside the battery body, a...
8711536 Voltage detection apparatus and combination circuit  
A voltage detection apparatus includes an operational amplifier, first and second switches coupled between a terminal of a detection target voltage source and a common node, a first capacitor...
8643376 Voltage measuring apparatus of assembled battery  
A voltage measuring apparatus for measuring an output voltage of an assembled battery in which a plurality of unit cells are connected in series and are divided into a plurality of blocks is...
8629687 Disconnection detecting device  
A control circuit turns on a switching element to discharge a capacitor, and after a voltage between both ends of the capacitor becomes zero, the control circuit turns off the switching element....
8618805 Battery pack with a battery protection circuit  
A battery circuit includes a monitoring circuit, an integrator circuit, and a comparator. The monitoring circuit can be used to monitor a cell and generate a monitoring signal indicating a cell...
8618806 Circuits and methods for cell number detection  
A circuit used for determining a cell number of several battery cells. The circuit includes a detection block and a controller, and operates in a first detection mode and a second detection mode....
8598897 Isolation monitoring system and method utilizing a variable emulated inductance  
A system for measuring leakage resistance between a high voltage (HV) system of a vehicle and a vehicle chassis includes an emulated inductance that is connected between the HV system and the...
8587256 Battery management system and driving method for the system  
A BMS and driving method, the BMS including a sensing unit sensing voltages and currents of battery cells and an MCU determining an SOC of the battery cells and controlling charging and...
8570047 Battery fault detection with saturating transformers  
A battery monitoring system utilizes a plurality of transformers interconnected with a battery having a plurality of battery cells. Windings of the transformers are driven with an excitation...
8571738 Automotive vehicle battery power system monitoring systems, apparatus and methods  
A battery monitoring system comprises a battery control unit (BCU) and a plurality of module control units (MCUs) connectable to battery modules. The BCU comprises a low voltage power supply, a...
8564325 Voltage detection device and system  
A voltage detection device including a multiplexer provided with a plurality of input channels connected to respective battery cells and an output channel connected to an analog-to-digital (AD)...
8519715 Method and system for assembling a battery module  
A test fixture for testing a plurality of longitudinal battery cells includes: a base plate; a plurality of holding structures for holding the battery cells, the holding structures being mounted...
8519717 Method for detecting ice blocking of fuel cell stack and controlling fuel cell vehicle using the same  
Disclosed is a method for detecting ice blocking of a fuel cell stack. In particular, the method includes periodically calculating a minimum cell voltage of a fuel cell stack from cell voltages...
8513953 Power supply device and method for making decision as to contactor weld of power supply device  
A power supply device includes: a power supply; a first contactor and a second contactor that are connected between the power supply and a load; a voltage detection circuit that detects a voltage...
8487630 Battery pack and method for detecting degradation of battery  
A battery pack includes: one or two or more secondary batteries; a charge control switch that turns on/off a charging current to the secondary battery; a discharge control switch that turns on/off...
8463562 Device and method for detecting abnormality of electric storage device  
Provided is an abnormality detecting device for detecting an abnormality of electric storage devices such as a battery pack. Comparators (140-1) to (140-n) detect a time when a voltage reaches a...
8461825 Current measurement apparatus with shunt resistor and heat sink  
A current measurement apparatus includes a shunt resistor (1) located between two terminal members (5, 6), each connected electrically to a respective end (4, 3) of the shunt resistor, and each...
8463564 Abnormality prediction system for secondary batteries  
An abnormality prediction system for secondary batteries according to the present invention includes: a parameter value detection portion that detects parameter values each corresponding to each...
8436620 Voltage monitoring using bitstream signal processing  
Systems and methods are provided for monitoring a voltage. A level shifter is configured to generate a current proportional to the voltage of the battery cell. A delta-sigma modulator is...
8421469 Method and apparatus for electrically cycling a battery cell to simulate an internal short  
A test apparatus and corresponding method for simulating an internal cell short and initiating thermal runaway in a battery cell is disclosed whereby the cell is internally heated through rapid...
8421416 Battery charge compensation  
A battery charger and method for a rechargeable battery pack which includes various elements in series with the cells to be charged, including but not limited to current control FETs, a fuse,...

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