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Combination Flywheel/Alternator/Lithium Battery to Optimize Energy and Safety at High Temperature

IP.com Disclosure Number: IPCOM000247537D
Publication Date: 2016-Sep-14
Document File: 1 page(s) / 134K

Publishing Venue

The IP.com Prior Art Database

Abstract

At high temperatures approaching 170°C, primary lithium batteries become dangerous. For high-temp drilling missions, a method to conserve battery energy while reducing risk is needed. This invention is for a power handling assembly, combining a spinning-mass flywheel with the lithium battery, to alleviate both problems. Before a critical temperature is reached, a controller can deplete the reactive and dangerous lithium metal within the battery pack by transferring energy to the flywheel. Power from the flywheel can then be used at higher temperatures to drive an alternator, which supplies power to the load. Because the flywheel can only store energy for a finite time, spinning it up would be done only later in the mission - as the maximum temperature for safe use of the battery is approached.

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Title:  Combination Flywheel/Alternator/Lithium Battery to Optimize Energy and Safety at High Temperature

Abstract:  At high temperatures approaching 170°C, primary lithium batteries become dangerous. For high-temp drilling missions, a method to conserve battery energy while reducing risk is needed. This invention is for a power handling assembly, combining a spinning-mass flywheel with the lithium battery, to alleviate both problems. Before a critical temperature is reached, a controller can deplete the reactive and dangerous lithium metal within the battery pack by transferring energy to the flywheel. Power from the flywheel can then be used at higher temperatures to drive an alternator, which supplies power to the load. Because the flywheel can only store energy for a finite time, spinning it up would be done only later in the mission - as the maximum temperature for safe use of the battery is approached.

Description:  At high temperatures approaching 170°C, primary lithium batteries become dangerous. For high-temp drilling missions, a method to conserve battery energy while reducing risk is needed. This invention is for a power handling assembly, combining a spinning-mass flywheel with the lithium battery, to alleviate both problems. Before a critical temperature is reached, a controller can deplete the reactive and dangerous lithium metal within the battery pack by transferring energy to the flywheel. Power from the flywheel can then be used at higher temperatures...