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"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 8436583 | Multiple cell battery charger configured with a parallel topology A multiple cell battery charger configured with a parallel topography is disclosed. In accordance with an important aspect of the invention, the multiple cell battery charger requires fewer active components than known battery chargers while at the same time protect... | 05/07/2013 |
| 8421413 | Battery fault detection apparatus The battery fault determination apparatus includes battery monitor sections connected in a daisy chain, each of which is provided for a corresponding one of unit batteries each including battery cells connected in series to monitor the battery cells and output an ou... | 04/16/2013 |
| 8288992 | Cell management system A cell management system and method for balancing energy across a plurality of cells coupled to a circuit bus. The system can include a transformer, two transformer switches, and for each cell, a first switch pair allowing transfer of energy between the transformer ... | 10/16/2012 |
| 8242745 | Battery pack with balancing management A battery management system for a battery pack comprising multiple battery modules is disclosed. Each of the battery modules includes multiple battery cells. The battery management system includes multiple first balancing units, multiple first controllers, a second ... | 08/14/2012 |
| 8203308 | Method and circuit for providing a balancing current in a charge circuit interrupt device A charge circuit interrupt device comprises a ground fault interrupt module, a current generation module and a current injection module. The ground fault interrupt module disconnects a load from a charging source when a current imbalance exceeds a threshold. The cur... | 06/19/2012 |
| 8102149 | Charger capable of performing integrated control and separate control of parallel operations The present invention relates to a charger capable of performing the integrated control and separate control of parallel operations. The charger includes a plurality of charging modules connected in parallel with each other. Each of the charging modules includes a r... | 01/24/2012 |
| 8093863 | Battery pack for cordless power tools A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions with... | 01/10/2012 |
| 8089249 | Battery management systems and methods A battery management system includes a switch array, a first controller and a second controller. The switch array selects a battery module from multiple battery modules in a battery pack based upon a conduction state of the switch array. The first controller is coup... | 01/03/2012 |
| 8063606 | Battery charger for a handheld computing device and an external battery A battery charger includes a power source for supplying a primary charge current to a first battery, and a charge manager for charging a second battery. The charge manager is coupled to the power source and is configured to charge the second battery with a secondary... | 11/22/2011 |
| 8035343 | Method for balancing cells in a battery pack A method is provided for charging a plurality of cells in a battery pack to a target charging value. The method includes: delivering a charging current to the plurality of cells; monitoring cell voltage of each cell in the plurality of cells to determine when at lea... | 10/11/2011 |
| 8030895 | Cell balancing systems with multiple controllers In one embodiment, a cell balancing system includes a first controller for controlling cell balancing of a first set of cells coupled in series, and a second controller for controlling cell balancing of a second set of cells coupled in series. There is at least one ... | 10/04/2011 |
| 7994754 | Battery charging apparatus, battery pack, battery charging system, and battery charging method A battery pack charging method and battery charging apparatus including: a plurality of charge units which charge respective battery cells of the battery pack, by outputting pulse currents, generated from a supplied DC voltage, in response to enable signal; and a pl... | 08/09/2011 |
| 7956579 | Battery charge management system for charging a battery bank that includes a plurality of batteries Battery charge management systems for charging a battery bank including a plurality of batteries connected in series are disclosed that include: a power source having a charging port, the power source capable of providing power to each battery in the battery bank; a... | 06/07/2011 |
| 7936149 | Charging device A charging device has an electric accumulator (20) formed by a plurality of series-connected electric accumulator cells (E1, E2, . . . , En), one electrode of any one of the electric accumulator cells being used as a reference potential of the e... | 05/03/2011 |
| 7936150 | Battery cell protection and conditioning circuit and system A type of protection and cell conditioning circuit is proposed that partly uses the typically existing hardware present in traditional cell-protection circuits and that can achieve an optimum state of charge for the individual cell independently from the actions of ... | 05/03/2011 |
| 7928692 | Battery pack for cordless power tools A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions with... | 04/19/2011 |
| 7880434 | System for balancing a plurality of battery pack system modules connected in series A system for balancing a plurality of battery pack system modules connected in series comprising: a plurality of battery pack system modules, wherein a high charge module of the plurality of battery pack system modules has a charge greater than a that of other modul... | 02/01/2011 |
| 7859223 | Battery montoring apparatus and daisy chain interface suitable for use in a battery monitoring apparatus A battery monitor for monitoring the performance of at least one battery within an array of batteries, comprising: a data acquisition device for measuring at least one parameter of the at least one battery associated with the battery monitor, a first data interface ... | 12/28/2010 |
| 7821230 | Method and system for cell equalization with switched charging sources A system and method for charging a rechargeable, or secondary, battery including a series string of cells, includes a topology of charging sources that selectively provides charging current to cells that need to be charged, but avoids overcharging cells that are alr... | 10/26/2010 |
| 7808208 | Battery equalizer for cars There is provided a battery equalizer for cars. The battery equalizer for cars includes a battery module including first and second batteries and a battery equalizer mounted in the battery module to sustain charge voltages of the first and second batteries to be the... | 10/05/2010 |
| 7728553 | Battery pack for cordless power tools A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions with... | 06/01/2010 |
| 7723956 | Battery module system, method of charging battery module and charging type vacuum cleaner A battery module system includes a battery module and a control member. The battery module comprises battery units are connected in series. Each of the battery units comprises a unit cell having a voltage variation rate A (mV/% SOC) at a full charge voltage VH1... | 05/25/2010 |
| 7714540 | Apparatus and method for detecting voltage of assembled battery An assembled battery voltage detecting apparatus includes a sampling switch section which samples a voltage of each of single batteries, capacitors charged with voltages of single batteries, a transfer switch section to transfer a charge voltage charged in each of t... | 05/11/2010 |
| 7663341 | System for controlling voltage balancing in a plurality of lithium-ion cell battery packs and method thereof Disclosed are system and method for adjusting a voltage balancing of cell in a lithium ion multicell battery pack, the system comprising; a multicell battery pack including a master module and a slave module, a CPU located in the system controller and outputting a s... | 02/16/2010 |
| 7642749 | Rechargeable battery, and apparatus and method of charging the same To maximize the life of a rechargeable battery and the life of cells forming the rechargeable battery, the rechargeable battery is so constructed that each of the cells forming the rechargeable battery can be charged independently of the other cells. To charge this ... | 01/05/2010 |
| 7638974 | Method and device for managing batteries of a battery system Method for managing a battery system including a number of serially coupled batteries in a flexible, reliable, and cost effective way and that can be used in a wide variety of applications, such as tools, for example, hand tools, cars, boats, back-up systems, buses,... | 12/29/2009 |
| 7602145 | Method of balancing batteries A methodology for balancing batteries for use in an electric vehicle. The methodology includes initializing a target balance voltage value to a predetermined voltage. Sampling a first voltage of the batteries at a predetermined interval. Sending the lowest voltage v... | 10/13/2009 |
| 7589498 | Battery discharge current sharing in a tightly regulated power system In a high power system, plural batteries provide back-up power when primary power is unavailable. Each battery has an associated discharge controller which is controlled by a local bus control amplifier which regulates the power bus voltage set-point lower than the ... | 09/15/2009 |
| 7471066 | Battery management and equalization system for batteries using power line carrier communications A battery charging system uses power line carrier communications, for communicating battery state information associated with charging batteries, between a battery charger and a battery management system (BMS) located on the battery or battery pack. The power line c... | 12/30/2008 |
| 7456610 | Battery charging apparatus for charging a plurality of batteries A battery charging apparatus having a plurality of charging units connected in series. A charging unit has a series switch connected in series with a rechargeable battery, and a parallel switch connected in parallel with the series connected rechargeable battery and... | 11/25/2008 |
| 7417408 | Method and arrangement for charging capacitors of direct-voltage intermediate circuit of frequency converter A method and an arrangement for charging capacitors of a direct-voltage intermediate circuit of a frequency converter. The arrangement comprises a charging circuit (CCA) comprising a first diode (D1) and a second diode (D2) connected in series with the... | 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 |
| 7400114 | Voltage equalizer for battery elements A voltage equalizer for battery elements for equalizing terminal voltages of a plurality of battery elements comprises an equalization processing circuit. The equalization processing circuit includes a transformer having basic windings. The basic windings comprise a... | 07/15/2008 |
| 7394222 | Power supply apparatus with function for correcting for erroneous detection A power supply apparatus has a battery that is composed of a plurality of battery modules connected in series, a voltage detector that detects the relative voltages at the individual nodes between the battery modules with respect to a predetermined reference node, a... | 07/01/2008 |
| 7388351 | Capacity equalizing apparatus for secondary batteries A small and low-cost capacity equalizing apparatus for equalizing the capacities of battery blocks constituting an assembled battery, each battery block comprising one or multiple secondary batteries and the battery blocks being connected in series. The capac... | 06/17/2008 |
| 7378818 | Bidirectional power converter for balancing state of charge among series connected electrical energy storage units A system is provided for balancing state of charge among plural series connected electrical energy storage units that includes a power converter that selectively couples to an individual storage unit of the a string of electrical energy storage units and bidirection... | 05/27/2008 |
| 7369386 | Overcurrent protection for solid state switching system Current sensing resistors are connected directly to output terminals of MOSFETs forming the series switching stage of a PWM sinewave dimmer. An analog sensed current signal is coupled through an EMI resistant current link to comparators that provide an overcurrent i... | 05/06/2008 |
| 7366925 | Portable power management for a computing device carrying case An apparatus, carrying case and computer system are disclosed herein. In the apparatus, a housing to which an electrical device may be electrically coupled is provided. A secondary battery may be electrically coupled to the housing and adapted to power the electrica... | 04/29/2008 |
| 7358704 | Critical state estimation system and method for secondary cells For estimation of a critical state of a performance under a working condition of a secondary cell, in consideration of an internal resistance of the cell, a variable data provider provides variable data on the performance, including a first data on a variant of the ... | 04/15/2008 |
| 7345455 | Staggered backup battery charging system A battery backup system includes a control device including a power sensing device, a discharge circuit, a charging circuit, and a plurality of battery packs. A lower threshold is established representative of a minimum acceptable effective energy capacity. Each bat... | 03/18/2008 |
