Device and method for protecting a battery
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United States of America Patent
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Jul 12, 2016
Grant Date -
Mar 14, 2013
app pub date -
Sep 11, 2012
filing date -
Sep 14, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A battery protection device for protecting a battery (1;41) comprises an electrical circuit arranged to generate or suppress a ripple current through said battery. Said electrical circuit comprises a ripple generator arranged to produce an electrical ripple current, a first ripple injector (21;48) to be arranged on a positive power line to the battery, said first ripple injector being arranged to transfer said electrical ripple current to said positive power line, and a second ripple injector (22;49) to be arranged on a negative power line to the battery. Said second ripple injector is arranged to transfer said electrical ripple current to said negative power line. Said first and second ripple injector are arranged to operate in a differential mode, e.g. opposite sign on injected current.
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