Abstract:
A non-aqueous electrolyte for an electrical storage device comprising a non-aqueous solvent, a salt dissolved in said non-aqueous solvent, and a liquid viscosity reducing agent in sufficient quantity to substantially reduce the viscosity of the electrolyte below the viscosity of the non-aqueous solvent.
Abstract:
An electrolyte with an indicator, such as a dye, for detecting leakage from an electrochemical energy storage device is provided. Also provided is a method of making such an electrolyte with indicator; a device that incorporates such an electrolyte with indicator; a method of manufacturing an electronic or electrical system that incorporates such a device; and a method of detecting the leakage of electrolyte from a battery or capacitor.
Abstract:
A prediction algorithm in equation form is developed by testing a battery (F) to acquire given battery parameters and develop numerical weighting factors for the parameters. To predict the available energy, the battery (F) is tested to acquire data of the parameters and the data values are applied to the equation.
Abstract:
A method for reducing pressure build-up in an electrochemical cell comprising: providing an anhydrous nonaqueous electrolyte solution comprising at least one quaternary ammonium salt and at least one anhydrous nonaqueous solvent; contacting said electrolyte solution with at least one acid scavenger; and loading said nonaqueous electrolyte solution into said electrochemical cell. Also, an electric double-layer capacitor (supercapacitor) comprising a free acid scavenger.
Abstract:
In accordance with the invention, there is a battery defect detection method comprising applying a current ramp to a battery (750), determining a first time (t 1 ) when a current of the battery (750) reaches a maximum current (I peak ), and determining a second time (t 2 ) when a terminal voltage of the battery (750) reaches a maximum voltage (V peak )- The method also includes determining a differential (d), wherein (d) = /(t 1 ) - (t 2 )/, and wherein (d) corresponds to a magnitude of defects in the battery (750).
Abstract:
Computer-assisted methods for determining the state of charge of a specific lithium ion battery (100), without the need for charging and discharging the battery, by utilizing look-up tables or algorithms, within a computer (1) which store the relationships of state of charge to open-circuit voltage or to ramp-peak current, or to both for that type of specific lithium-ion battery (100) to determine the state of charge for that specific lithium-ion battery (100).
Abstract:
A method and apparatus (Fig.1) for optimizing recharging of batteries (20) in an electric or hybrid vehicle that uses an electric motor (35) powered by the batteries (20) and having a regenerative system (10) that uses mechanical forces of the vehicle to generate current to recharge the batteries. The output of the regenerative system is controlled (15 and 35) to supply a maximum amount of current to recharge the batteries immediately after termination of a pulse or continuous discharge thereby to recapture a larger portion of the discharge current (Fig. 3) and the battery voltage is monitored (35) during recharge and the voltage is controlled (15) during charge so that it does not exceed a predetermined value at which battery gas evolution takes place (Fig. 2), thereby permitting the battery to be charged to a relatively high stage of charge.
Abstract:
A method for reducing pressure build-up in an electrochemical cell is provided comprising: providing an anhydrous nonaqueous electrolyte solution comprising at least one quaternary ammonium salt and at least one anhydrous nonaqueous solvent; contacting the electrolyte solution with at least one acid scavenger; and loading the nonaqueous electrolyte solution into the electrochemical cell. Also, provided is an electric double-layer capacitor (supercapacitor) comprising a free acid scavenger.
Abstract:
Computer-assisted methods for determining the state of charge of a specific lithium ion battery, without the need for charging and discharging the battery, by utilizing look-up tables or algorithms which store the relationships of state of charge to open-circuit voltage or to ramp-peak current, or to both for that type of specific lithium-ion battery to determine the state of charge for that specific lithium-ion battery.