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7332913 Method and apparatus for determining to which battery cell in a string of battery cells a test instrument is connected  
A method and apparatus for determining to which battery cell in a string of battery cells between a pair of busses a test instrument is connected. Knowing the average voltage of the battery cells...
7304584 Wireless input device with low voltage mandatory alert function  
The present invention relates to a wireless input device with a low voltage mandatory alert function, including: a battery for supplying power for the wireless input device; a microcontroller for...
7253631 Method of determining the impedance of an electrochemical system  
The invention relates to a method of determining the complex impedance Z(fm) of a non-steady electrochemical system, comprising the following steps consisting in: bringing the system to a selected...
7239147 Method and device for inspecting secondary battery precursor and method for manufacturing secondary battery using the inspection method  
A method for testing a precursor of a secondary cell with high reliability and high efficiency to judge the precursor to be acceptable or defective. The current flowing when a test voltage is...
7236893 Arrangement for voltage supply to several users and controllers for a on-board network comprising at least two energy stores  
An arrangement for supplying voltage to a number of loads for example, in a vehicle includes a vehicle power supply system (6) which has at least two energy stores. A first energy store is...
7236346 Semiconductor apparatus and method of charging desired number of capacitors  
A capacitor charging semiconductor apparatus including a plurality of serially connected capacitors to be charged. A direct current source is applied to the plurality of capacitors. A plurality of...
7202632 Battery management apparatus  
When impedance calculating conditions are satisfied after a system is started, the impedance of a battery is calculated using the current of the battery, a time variation in open circuit voltage...
7199537 Voltage converter control apparatus, and method  
By using a target voltage Vc* of a capacitor connected to the output side of a DC/DC converter and a voltage Vb of a battery connected to the input side of the DC/DC converter, a duty ratio D as a...
7194308 System and method for monitoring or reporting battery status of implantable medical device  
A system and method monitors or reports the battery status of an implantable medical device to a user. The battery terminal voltage and charge delivered are measured. Before the battery terminal...
7173397 Battery system, battery monitoring method and apparatus  
A battery performance monitoring system anticipates the sudden fall of battery output. The system measures the battery voltage at a time point when the discharge current of a battery becomes...
7173429 Activity-based battery monitor with a universal current measuring apparatus  
A battery monitoring apparatus that obtains a current measurement for a current in a conductive element. The battery monitoring apparatus includes conductive lines configured to couple to a...
7148808 System for battery alarm notification and a method for implementing same  
In an embodiment of the present invention, a clamp-on sensor is coupled at a single point of a battery string in an un-interruptible power supply. In embodiments of the present invention, the...
7098666 Method and system for battery state of charge estimation by using measured changes in voltage  
A method (20 or 30) and system (40) for estimating a battery state of charge can include a memory (48) for storing at least one among an impedance value, a plurality of values for V drop 0-1, or a...
7095237 Method of grouping single cells of power sources to build optimal packs using parameters obtained by analysis of impedance spectrum  
A method for selecting unit cells to make an optimal battery pack improves the performance of the battery pack with primary or secondary batteries connected to one another in series, in parallel,...
7095211 Battery gas gauge  
Full capacity determination in a battery gas gauge. Operations include measuring instantaneous open circuit voltage levels during an open circuit time interval for a specific battery cell and...
7078908 Voltage detecting apparatus applicable to a combination battery  
A voltage detecting apparatus for a combination battery includes a multiplexer type flying capacitor voltage detecting circuit, a synchronous control type A/D converter, and a battery controller....
7071698 Power supply apparatus for detecting battery voltage and the portions of faults  
A power supply apparatus according to the present invention includes a battery and a voltage detection circuit for detecting the voltage of the battery. The voltage detection circuit includes a...
7053632 Circuit and method for predicting dead time  
A circuit for predicting the dead time is provided. The circuit includes a plurality of integrators, a plurality of comparators, and a logic circuit. Based on a reference signal provided...
7034475 Control apparatus for controlling regenerative operation of vehicle motor  
A control apparatus for controlling a regenerative operation of a vehicle motor includes a vehicle motor as a drive source of a vehicle, an energy storage device, including plural cells, for...
7012434 Method for determining the amount of charge which can be drawn from a storage battery and monitoring device  
A method for determining the amount of charge which can be drawn from a storage battery and a monitoring device are provided that measure at least one of battery currents and battery voltages at...
7009402 Estimating apparatus and method of input and output enabling powers for secondary cell  
In input and output enabling power estimating apparatus and method for a secondary cell, an input enabling power (Pin) of the secondary cell is estimated on the basis of parameter estimated values...
6980115 Transmitter having supplemental power source  
A transmitter (100) incorporates an energy storage device (112) to improve operation at low temperature ranges by preventing a battery voltage from dropping below a nominal value of a PLL (104). A...
6956487 Battery charging status indication circuit  
This invention includes a circuit for displaying charge status to a user. The circuit includes circuitry for comparing a supply or reference voltage to a cell voltage, circuitry for sensing...
6943693 Method for informing user of available battery time based on operating mode of hybrid terminal  
Disclosed is a method for informing a user of an available battery time of a battery in a hybrid terminal based on the operating mode of the hybrid terminal. The hybrid terminal has a plurality of...
6933728 Method and apparatus for measuring voltage of battery module of electric vehicle  
While measuring a value of a battery module voltage of an electric vehicle using a differential amplifier circuit having at least one resistor, an actual effective gain of the differential...
6920404 Method of detecting residual capacity of secondary battery  
Correlations between a residual capacity of a secondary battery and 4 parameters of an internal resistance, temperature, a discharge current and one of an open circuit voltage and a discharge...
6919725 Electronic battery tester/charger with integrated battery cell temperature measurement device  
An electronic battery tester for testing a storage battery that includes a battery housing with a plurality of electrochemical cells electrically connected to terminals of the battery is provided....
6909261 Method for predicting the loading capability of an electrochemical element  
A method for predicting the loading capability of an accumulator by measuring the current I, voltage U and temperature T of the accumulator, and comparing the measured values with the...
6885952 System and method for determining voltage levels  
A method for determining a power source voltage level of a power source in a system in which the power source is connected to a microcontroller. A charging circuit is in direct communication with...
6882942 Accessing main ATX outputs without monitoring all outputs  
A power monitor circuit and method delays the start of a computer until multiple power lines are at a safe level of operation. The integrated circuit monitors only the voltage of a primary power...
6867595 Verification system for verifying authenticity of a battery and method thereof  
A verification system for verifying authenticity of a battery used in a portable electronic device includes a battery for supplying a first electrical current, the battery containing a transducer...
6859040 Voltage detecting circuit  
There is provided a voltage detecting circuit in which a consumed electric current is small, accuracy is high, and an erroneous operation seldom occurs. In the voltage detecting circuit...
6828793 Battery voltage detecting circuit  
To eliminate in structure a parasitic capacity formed between a polycrystalline silicon film resistor and a semiconductor substrate, and to provide a battery voltage detecting circuit capable of...
6828914 In-use unambiguously determining the near-end-of-life state of a combustion engine battery  
Determining near-end-of-life (NEOL) state of a combustion engine battery, comprising: first and second multi-functional modules operatively connected to a logic function linking group, each...
6791464 Apparatus of monitoring motor vehicle's electric power and method thereof  
An apparatus of monitoring motor vehicle's electric power and method thereof are provided. The apparatus is disposed in the motor vehicle and includes a monitor and alarm device parallel connected...
6774637 Method of qualifying at least a portion of a fuel cell system and an apparatus employing same  
The present invention provides a method for enabling qualification of at least a portion of a fuel cell system. The method includes electronically obtaining at least one result of a test of the at...
6762610 Device and method for evaluating battery can coatings  
The electrical resistance aging properties of a coating intended for use on a base material in a primary alkaline cell battery are be tested by manufacturing at least one test device, measuring a...
6747457 Apparatus for and method of calculating output deterioration in secondary battery  
In a secondary battery output deterioration calculating apparatus that calculates a battery output deterioration in conformance to the output ratio of the battery output ascertained as a secondary...
6732043 Method and arrangement for determining the starting ability of a starter battery of an internal combustion engine  
A method of determining the starting ability of a starter battery of an internal combustion engine, according to which a charge status of the starter battery is determined, which has an influence...
6724194 Cell voltage monitor for a fuel cell stack  
Voltage reversal in fuel cell stacks may be detected and/or prevented by monitoring each cell or small groups of cells in the stack for low voltage conditions. An improved cell voltage monitor is...
6704629 Device for monitoring motor vehicle's electric power and method therefor  
A method and a device for monitoring a motor vehicle's electric power, in which the method comprises the steps of sampling, calculating, comparing, displaying results, and counting intervals, and...
6691049 Method and apparatus to detect that the battery gauge is out of calibration  
A laptop computer system comprising an apparatus and related method for monitoring a battery gauge of a laptop computer and notifying the computer system user if the battery gauge is out of...
6690171 Battery capacity detection device and method  
A battery capacity detection device and the method for the same are disclosed. The charge time for the capacitor in an RC circuit and a lookup table are employed to determine the charge capacity...
6678555 Circuits for increasing the reliability of an iontophoretic system  
Circuits are provided for increasing the reliability of an iontophoretic drug delivery system. Such circuits detect the failure of a crystal oscillator of the system, the failure of a voltage...
6646420 Method of interrupting and dynamically switching ranges to improve battery charge measurement range in a sigma delta converter  
A method of improving the battery charge measurement range in a sigma delta converter associated with portable applications such as a cell phone is implemented by interruption of the sigma delta...
6646442 Voltage detection device for a battery package  
To detect terminal voltages in a battery package including high and low potential groups connected in series, a positive terminal of one battery module in the high potential group outputting the...
6646561 Method and device for in-use detecting low cranking strength of a combustion engine battery during engine starting  
A method and device for in-use detecting low cranking strength of a combustion engine battery during engine starting, based on integrating changes in battery voltage specifically during engine...
6628125 METHOD AND APPARATUS FOR DETECTING SLOW AND SMALL CHANGES OF ELECTRICAL SIGNALS INCLUDING THE SIGN OF THE CHANGES, AND CIRCUIT ARRANGEMENT FOR THE EXACT DETECTION OF THE PEAK VALUE OF AN ALTERNATING VOLTAGE  
Apparatus for detecting slow and small changes of electrical signals including the sign of the changes, the apparatus includes: a controlled switch (2); a capacitor (3) charged to the voltage of a...
6621273 Voltage measurement apparatus  
A voltage measurement apparatus is provided for measuring a voltage of each of N power sources connected in series. The apparatus includes N capacitance elements provided respectively...
6618681 Method and apparatus for predicting the available energy of a battery  
A method of predicting by non-invasive testing the available energy of a battery at any state of charge by acquiring data of the parameters of internal resistance (IR), open circuit voltage (OCV)...