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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 8183870 | Battery system and method for sensing and balancing the charge state of battery cells A battery system utilizes a plurality of transformers interconnected with the battery cells. The transformers each have at least one transformer core operable for magnetization in at least a first magnetic state with a magnetic flux in a first direction and a second... | 05/22/2012 |
| 8154300 | Voltage measuring device and voltage measuring system In a voltage measuring device, according to a setting of input terminals for setting the number of unit cells to be measured SEL1, SEL2, SEL3, a logic circuit turns on switches in a switching circuit connected to the unit cells to measure a volt... | 04/10/2012 |
| 8111071 | Battery management system and driving method thereof A sensing and control apparatus for a battery management system is provided. The sensing and control apparatus includes: a sensing unit and a main control unit. The sensing unit includes: a cell relay of a plurality of cell relays and a voltage detection unit. The c... | 02/07/2012 |
| 8106661 | 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 low order control device in the lowest potential, and a high order cont... | 01/31/2012 |
| 8030941 | System and method for measuring fuel cell voltage A system for measuring individual cell voltages of a fuel cell stack includes a plurality of voltage scanning units (VSU). Each VSU is arranged for being connected to a group of cells, belonging to the fuel cell stack, the group of cells being provided with terminal... | 10/04/2011 |
| 7999555 | Multi-channel measuring apparatus for connection to a fuel cell stack A number and a combination of N-pole connectors and (N+1)-pole connectors are determined such that a number of fuel cells included in the fuel cell stack and a number of all of poles included in the plurality of terminal-side connectors are equal to each other. Furt... | 08/16/2011 |
| 7999554 | Single floating battery cell voltage level translator circuitry Voltage translator circuitry may include a path including a first resistor, a current controlling device, and a second resistor coupled in series. The voltage translator circuitry may further include an operational amplifier having a positive supply terminal to acce... | 08/16/2011 |
| 7924016 | Voltage measuring device A pair of measuring switches S21, S22 is interposed between both terminals of a capacitor C, and inputs T1, T2 of A/D converters 11c, 11d via resistors R1, R2. A pair of measuring switches S23 | 04/12/2011 |
| 7902830 | System to measure series-connected cell voltages using a flying capacitor A system for measuring voltage of individual cells connected in series includes a single flying capacitor. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the capacitor may process an accurate represent... | 03/08/2011 |
| 7888945 | 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 low order control device in the lowest potential, and a high order cont... | 02/15/2011 |
| 7847558 | Battery system for monitoring a battery A locomotive, a battery system and a method for monitoring a battery are provided. The battery has a first plurality of cells electrically coupled in series to one another. The first plurality of cells includes a second plurality of cells and a third plurality of ce... | 12/07/2010 |
| 7750641 | Battery system and method for monitoring a battery A battery system and a method for monitoring a battery are provided. The battery has a first plurality of cells electrically coupled in series to one another. The first plurality of cells includes a second plurality of cells and a third plurality of cells electrical... | 07/06/2010 |
| 7719284 | Apparatus for measuring voltage An apparatus measures a voltage of a cell while scanning a group of cells in a cell stack, in which a plurality of cells is electrically connected in series. The apparatus has a first switching device and a voltage detecting device. The first switching device is con... | 05/18/2010 |
| 7719283 | Switching circuit and voltage measuring circuit A switching circuit includes a capacitor, a combination battery having a plurality of unit cells connected in series, each of the unit cells containing battery, and a plurality of change-over switches sequentially connecting both ends of the each of the unit cells t... | 05/18/2010 |
| 7663375 | Battery voltage detecting circuit A battery voltage detecting circuit includes: a first capacitor having one end connected to one input terminal of an operational amplifier; a second capacitor having one end connected to an output terminal of the operational amplifier and the other end connected to ... | 02/16/2010 |
| 7656164 | Method of voltage measurement and apparatus for same A method of voltage measurement, and an apparatus for the same, having an improved accuracy and low cost is provided. The apparatus includes: a charging unit for charging a capacitor; a measuring unit for measuring a charge of the capacitor; and a microcomputer for ... | 02/02/2010 |
| 7504831 | Cell-voltage measuring structure for fuel cell stack and related method A cell-voltage measuring structure for a fuel cell stack, in which a plurality of unit cells, having conductive separators which includes anode-side separators and cathode-side separators to form pairs of unit separators with the anode-side separators and the cathod... | 03/17/2009 |
| 7427865 | Method for detecting a discharge condition fault in an electrical system of a vehicle or piece of machinery A method for detecting a discharge condition fault in an electrical system of a vehicle or a piece of machinery includes supplying electrical energy to the electrical system from an auxiliary battery or batteries of a multiple battery system when a main battery of t... | 09/23/2008 |
| 7425832 | System and method for measuring internal resistance of electrochemical devices A method and system are provided for measuring impedance and voltage characteristics of individual cells of multi-cell electrochemical devices, for example a battery or a fuel cell stack. The electrochemical system comprises a plurality of cells; a measuring device ... | 09/16/2008 |
| 7417406 | Electronic apparatus that determines a characteristic of a battery An electronic apparatus which detects when a battery having a different characteristic is mixed in a plurality of batteries accommodated therein. An average voltage V1 per battery of plural batteries connected in series and an average voltage V2 per ba... | 08/26/2008 |
| 7403016 | Car power source apparatus A car power source apparatus is provided with a battery having a plurality of battery modules connected in series on positive and negative sides of a midpoint reference node, and a voltage detection circuit that detects the voltage of one or a plurality of battery m... | 07/22/2008 |
| 7397221 | Battery protection device, battery protection system using the same, and battery protection method A battery protection device protects a battery from an abnormal state. The battery protection device includes a detector that detects an abnormality of the battery and outputs an abnormality detection signal when the abnormality is detected. A current is input to an... | 07/08/2008 |
| 7365528 | Method and apparatus of voltage measurement using flying capacitor and switching circuits The present invention is to provide a method and apparatus of voltage measurement with a high resolution. An apparatus of voltage measurement includes: a buffer circuit for separating a voltage between terminals of a capacitor or an equivalent voltage into a first v... | 04/29/2008 |
| 7363175 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/22/2008 |
| 7362588 | Flying capacitor type battery voltage detector In a flying capacitor type battery voltage detector on a circuit substrate, a large number of photo MOS switches having performance highly depending from temperature are dividedly disposed on front and back surfaces of the circuit substrate such that the photo MOS s... | 04/22/2008 |
| 7355914 | Methods and apparatuses for a sense amplifier Various apparatuses and methods in which a sense amplifier circuit couples to a current source to provide current for the sense amplifier circuit and also couples to one or more memory cells to sense a charge being stored by each memory cell. Store protection circui... | 04/08/2008 |
| 7352155 | Apparatus and method for detecting battery pack voltage An apparatus and method for detecting battery pack voltage is disclosed. The voltage detection apparatus includes a plurality of selectors for providing a cell voltage of a predetermined cell, a detector buffer for receiving the cell voltage of the predetermined cel... | 04/01/2008 |
| 7349813 | Fault tolerant power system architecture for fluid flow measurement systems To provide a fault-tolerant architecture to supply electrical operating power in fluid flow measurement applications, apparatus and associated systems, computer program products, and methods include an intelligent power module with redundant and electrically indepen... | 03/25/2008 |
| 7336155 | Remote control device for a motor vehicle A remote control for a garage door opener includes a transmitter for transmitting electromagnetic signals and at least one manual actuator. The transmitter can be arranged in flexible mounting areas inside or outside the motor vehicle and can be spatially separate f... | 02/26/2008 |
| 7329469 | Method of establishing connections between measuring electronics and fuel cell stack A printed circuit board that enables electrical communication between a fuel cell stack and measuring electronics includes a substrate having first and second sides and a plurality of pad sets formed in the substrate. Each of the pad sets includes a plurality of con... | 02/12/2008 |
| 7319304 | Shunt connection to a PCB of an energy management system employed in an automotive vehicle A method of coupling a shunt to a printed circuit board (PCB) of an energy management system is provided. The method includes coupling flexible electrical connectors to the shunt and soldering the flexible electrical connectors to connection points on the PCB of the... | 01/15/2008 |
| 7295936 | Electronic battery tester with relative test output An electronic battery tester for testing a storage battery determines a condition of the battery. The condition is a relative condition and is a function of a dynamic parameter of the battery and an empirical input variable. ... | 11/13/2007 |
| 7262605 | Power supply apparatus A power supply apparatus has a battery apparatus that is composed of a battery, a temperature sensor that is thermally coupled to the battery and whose electrical resistance changes with the temperature of the battery to which it is thermally coupled, a temperature ... | 08/28/2007 |
| 7253680 | Amplifier system with current-mode servo feedback A system and method for compensating an amplifier apparatus for low frequency and/or DC components of an externally applied input signal as well as for any voltage offsets contributed by the amplifier circuitry. Band-limited servo feedback is applied to predetermine... | 08/07/2007 |
| 7246015 | Alternator tester An alternator tester is provided for testing an alternator of a vehicle while the alternator is coupled to the vehicle. A sensor is configured to couple to the vehicle and sense a signal related to operation of the alternator. A memory contains data related to opera... | 07/17/2007 |
| 7221137 | Apparatus with storage for measuring stray currents from subway rails and power lines A measuring apparatus with storage that measures and analyzes both stray currents from subway rails or power lines and the pipe-to-soil voltage of a buried metallic structure simultaneously is disclosed. The data measuring apparatus with storage for measuring stray ... | 05/22/2007 |
| 7208914 | Apparatus and method for predicting the remaining discharge time of a battery A method and apparatus for predicting the remaining discharge time of a battery are provided. The method includes measuring a dynamic parameter of the battery, obtaining a discharge current of the battery, measuring a voltage of the battery and obtaining a temperatu... | 04/24/2007 |
| 7202730 | Voltage to current to voltage cell voltage monitor (VIV) A voltage measurement circuit is provided which converts a voltage of a first voltage source connected in series with an offset voltage source to an output voltage, including first and second current mirrors for accurately measuring voltage so as to provide a propor... | 04/10/2007 |
| 7192666 | Apparatus and method for heating fuel cells A fuel cell or fuel cell stack heater using resistive heat. A resistive conductor (preferably some type of metal wire) is attached to a source of electricity such as a battery. The resistive conductor is in proximity with the fuel cell or stack so that when the resi... | 03/20/2007 |
| 7165404 | Method for optimizing a large-scale industrial facility, especially a power plant The invention relates to a method for optimizing a large-scale industrial facility, especially a power plant, consisting of m subassemblies (BGj), wherein j=1(1)m) and wherein the following steps are successively carried out: comparing the parameters (KGj) of all su... | 01/23/2007 |
