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Title: Techniques for charging and/or discharging a battery using frequency modulation

Patent ·
OSTI ID:1925008

Described herein are techniques that increase the charging and/or discharging rate of a rechargeable battery, at least in part, by using frequency modulated (FM) signals having a frequency in the megahertz (MHz) frequency range. In some embodiments, the MHz frequency range may include any frequency between 0.1 MHz and 1 gigahertz (GHz). In some embodiments, a battery charger described herein may be configured to generate and transmit, to a battery, an FM signal modulated over a frequency range during a period of time, the FM signal having a frequency of at least 0.5 MHz during at least a first portion of the period of time. In some embodiments, a method described herein includes transmitting an FM signal modulated over a frequency range during a period of time and having a frequency of at least 0.5 MHz during at least a first portion of the period of time to a battery.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0012583
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Number(s):
11,418,066
Application Number:
16/995,689
OSTI ID:
1925008
Resource Relation:
Patent File Date: 08/17/2020
Country of Publication:
United States
Language:
English

References (24)

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Apparatus, system and method for dendrite and roughness suppression in electrochemical structures patent-application July 2019
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Multi-cell battery assembly patent September 2017
Single-particle measurements of electrochemical kinetics in NMC and NCA cathodes for Li-ion batteries journal January 2018
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Charging a battery with frequency-modulated pulses based on battery measurements patent November 2018
Extended life battery patent May 2018
Systems and methods for enhancing the performance and utilization of battery systems patent September 2018
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Systems and methods for enhancing the performance and utilization of battery systems patent-application January 2017
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Multi-cell battery assembly patent-application May 2013
Apparatus for preventing deterioration of storage capacity of rechargeable battery, regenerating the same, and measuring storage quantity patent-application April 2015
Connectors for delivery of power patent-application April 2016

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