| EnerDel, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120068665 | System and Method for Balancing a State of Charge of Series Connected Cells - A method of balancing a state of charge (SOC) of a plurality of cells connected in series, including identifying an undercharged cell from the plurality of cells to charge, electrically connecting a positive side of the undercharged cell to a positive bus, electrically connecting a negative side of the undercharged cell to a negative bus, electrically connecting an inductor to a voltage source during a first time period; electrically disconnecting the inductor from the voltage source in response to an elapse of the first time period, and maintaining the disconnection of the inductor from the plurality of cells for a second time period corresponding generally to the time for the inductor to discharge energy to the undercharged cell. | 03-22-2012 |
| 20120056625 | Method and System to Measure Series-Connected Cell Voltages Using a Flying Capacitor - A method and system for measuring voltage of individual cells connected in series includes a pair of busses connectable to the cells and a flying capacitor connectable to the busses. 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 representation of the voltage of the cell being measured. In order to prevent electrical interference with the capacitor and the ADC, the charge on the busses is reduced prior to measurement by the ADC | 03-08-2012 |
| 20110139469 | DEVICE, SYSTEM, AND METHOD OF FIRE SUPPRESSION - The present application includes disclosure of various embodiments of a dip tube device, included in fire suppression devices and systems, and methods of using the same. In an exemplary embodiment, the dip tube is comprised of a first cylinder defining a first lumen having a first diameter, a second cylinder defining a second lumen having a second diameter, and a joining member operably connecting the first lumen with the second lumen to allow a substance to pass therethrough, the joining member allowing movement of the second cylinder relative to the first cylinder. In an exemplary embodiment, the first diameter and the second diameter are substantially unchanged upon exposure to pressure greater than one atmosphere. | 06-16-2011 |
| 20100141268 | SYSTEM AND METHOD FOR MEASURING SERIES-CONNECTED CELL VOLTAGES USING A FLYING CAPACITOR WITH SELF CALIBRATION - System and method for measuring series-connected cell voltages using a flying capacitor with self-calibration. In at least one embodiment of a system of the present disclosure, the system comprises a capacitor, a switch, an amplifier, an analog-to-digital converter, and a precision voltage device. In an exemplary method of the present disclosure, the method comprises the steps of charging a capacitor, obtaining a charge voltage reading, discharging the capacitor for a known duration, obtaining a discharge voltage reading, and signaling a malfunction of the discharge voltage reading is greater than a predetermined voltage level. | 06-10-2010 |
| 20090136415 | Lithium titanate and method of forming the same - A lithium titanate is formed by mixing lithium carbonate powder or lithium hydroxide powder with titanium oxide followed by preparing a mixed slurry of titanium compound powder and a solution containing lithium, followed by depositing a lithium compound by spray-drying. | 05-28-2009 |
| 20080231231 | SYSTEM AND METHOD FOR BALANCING STATE OF CHARGE OF SERIES CONNECTED CELLS - A system and method for charging an undercharged cell of a bank of series connected cells utilizes a charging circuit. The charging circuit includes an inductor that receives current from the entire bank of cells and then provides current to the undercharged cell. Pulse width modulation is utilized to turn the switches on and off to regulate the current that flows to the inductor and thus is provided to the undercharged cell. | 09-25-2008 |
| 20080226969 | BATTERY PACK ASSEMBLY WITH INTEGRATED HEATER - A battery pack assembly for providing electric power to a load includes a battery pack, preferably made up of a plurality of lithium ion cells. A heating device formed of a flexible material flexes and covers at least part of the battery pack. The heating device includes a meandering heating strip. A thermal sensor is surrounded by the heating strip to sense the temperature of the battery pack. Electric current is applied to the heating strip to heat the battery pack when its temperature falls too low, thus improving performance of the battery pack. The heating device also includes a plurality of tabs extending beyond the peripheral sides of the heating device for direct connection to the cells. Thus, electric current for the heating strip is provided directly from the cells of the battery pack. | 09-18-2008 |
