Patent
Lithium-ion battery charge control method
TLDR
In this article, a technique of operating a Li-ion battery is proposed for maximizing battery life, which calls for charging the battery at a lower temperature than the temperature at which discharge begins, and discharge at a temperature T2, in the range of about +5°C to +30°C, T2 being higher than T1.Abstract:
A technique of operating a lithium-ion (Li-ion) battery is proposed for maximizing battery life. In a first instance, this technique calls for charging the battery at a lower temperature than the temperature at which discharge begins. Preferably, the battery is charged at a temperature T1 in the range between about +5°C and -20°C; and discharged at a temperature T2, in the range of about +5°C to +30°C, T2 being higher than T1. In another instance proposed by the invention, the battery is charged to an elevated state of charge which is above an initial state of charge at a temperature T1 between about +5°C and -20°C which is lower than a temperature T2, in the range of about +5°C to +30°C, at which discharge begins. In still another instance proposed by the invention, after the battery has been charged and discharged during the eclipse season, it is then charged to an intermediate charge level between about 40% and about 60% state of charge over a relatively long lapsed duration of time, about one month to about six months, and thereafter, the battery is maintained at this intermediate charge level.read more
Citations
More filters
Patent
Multi-mode charging system for an electric vehicle
Martin Eberhard,Jeffrey Brian Straubel,Kurt Russell Kelty,Scott Ira Kohn,Weston Arthur Hermann,Eugene Michael Berdichevsky,Andrew Gregory Simpson,Craig Bruce Carlson +7 more
TL;DR: In this paper, a method and apparatus that allows the end user to optimize the performance of an all-electric or hybrid vehicle and its charging system for a desired mode of operation is provided.
Patent
Control of a personal transporter based on user position
Dean Kamen,Robert R. Ambrogi,James J. Dattolo,Robert J. Duggan,Douglas J. Field,Richard Kurt Heinzmann,Matthew M. Mccambridge,Morrell John B,Michael D. Piedmonte,Richard J. Rosasco +9 more
TL;DR: In this paper, an apparatus controller for prompting a rider to be positioned on a vehicle in such a manner as to reduce lateral instability due to lateral acceleration of the vehicle is presented.
Patent
Energy efficient and fast charge modes of a rechargeable battery
TL;DR: In this paper, a method of providing power to an electronic device in an energy-efficient manner includes transitioning between power states corresponding to charging and discharging a battery, when cycled over time based on the state of the battery, provide for an energy efficient method of powering the electronic device.
Patent
Awning assembly and control system
TL;DR: In this paper, a retractable and extendable awning and a control system for automatically extending and retracting the anteroom of a building is described. But the awnings do not have the capability to detect excessive wind and mechanical shocks and also sunlight and rain.
Patent
Electric Vehicle Battery Lifetime Optimization Operational Mode
Kurt Russell Kelty,Weston Arthur Hermann,Scott Ira Kohn,Clay Hajime Kishiyama,Vineet Haresh Mehta,Sarah Stewart +5 more
TL;DR: In this article, a multi-mode operating system for an electric vehicle is provided, including means for a user to select a preferred mode of operation from a plurality of operational modes that include at least a Battery Life mode and a Standard mode, wherein the battery life mode is configured to select operating and charging parameters that emphasize battery health and battery life over vehicle range and performance.
References
More filters
Patent
Battery thermal control system and method
TL;DR: In this article, a battery thermal control system and method is provided which selectively heats or cools a storage battery in accordance with the battery temperature and state of charge, and the thermal controller includes a battery housing having an internal airspace between the battery and the housing which extends between two openings in the battery housing, a reversible fan configured to generate an airstream along the airspace, and a temperature sensor mounted to detect the temperature of the battery.
Patent
Nickel-hydrogen bipolar battery
TL;DR: In this paper, a nickel-hydrogen bipolar battery is described, where a plurality of unit cells are organized in assemblies wherein the assemblies are stacked and positioned within a hydrogen space, and each unit cell includes a porous hydrogen electrode (40) loaded on its lower surface with a platinum catalyst layer.
Patent
Power system battery temperature control
TL;DR: In this article, the authors placed a rechargeable battery in an insulated chamber under temperature control of thermoelectric devices operated by the power system to pump heat out of the chamber or by the battery to inject heat into the chamber.
Patent
Metal-oxide-hydrogen cell with variable conductant heat pipe
TL;DR: In this paper, a rechargable metal oxide-hydrogen cell having an electrode stack within a pressure vessel is described, and a variable conductance heat pipe includes a portion of the alignment member and couples the interior of the electrode stack to a radiator.
Patent
Method for restoring the lost capacity of nickel batteries and batteries formed thereby
TL;DR: In this paper, a method for partially or fully restoring the lost capacities of nickel batteries, as well as the batteries produced by this method, is disclosed, in which a nickel battery is cycled at least 10 times, with each cycle including a discharging step during which the capacity achieved at the end of the previous cycle is reduced by at least 5 percent, and a charging step.