[특허]Method and apparatus for charging, thawing, and formatting a battery

Method and apparatus for charging, thawing, and formatting a battery 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02J-007/10
출원번호	US-0824113 (1992-01-22)
발명자 / 주소	Podrazhansky Yury (Norcross GA) Popp Phillip W. (Norcross GA)
출원인 / 주소	Electronic Power Technology, Inc. (Norcross GA 02)
인용정보	피인용 횟수 : 62 인용 특허 : 0

초록 ▼

A method and an apparatus for rapidly charging a battery. The preferred charging method comprises applying one or more charging pulses (C1, C2), separated by a waiting period (CW1), with the last charging pulse, if there are more than one, being followed by a second waiting period (CW2). This is then followed by a series of discharging pulses (D1, D2, D3), which are separated by waiting periods (DW1, DW2), and followed by a last waiting period (DW3) before the occurrence of the next charging pulse (C1). The discharging pulses preferably have a magnitude which is approximately the same as the magnitude of the charging pulses but which have a duration which is substantially smaller than the duration of the charging pulses. The discharging pulses serve to create and disperse ions throughout the electrolyte of the battery so that the ions do not shield the plates of the battery from further charge transfer. Multiple discharge pulses are used rather than a single discharging pulse so that natural chemical and electrical gradients within the battery will serve to disperse the ions more evenly throughout the electrolyte. The use of discharging pulses of an extremely small duration does not cause any significant discharge of the battery but does increase the rate at which the battery can be charged and the efficiency with which the battery can be charged, thereby minimizing charging time and battery heating. Also disclosed are a method and an apparatus for thawing and charging a frozen battery, for formatting a new battery, for determining the state of formation of a battery, and for determining the state of charge of a battery.

대표청구항 ▼

A method for charging a battery, comprising the steps of: applying at least one charging pulse to said battery, said battery receiving a charging current primarily only during a said charging pulse, a said charging pulse having a pulse width not substantially less than 150 milliseconds; applying a first discharging pulse to said battery; waiting for a first wait period during which said battery is neither substantially charged nor substantially discharged; applying at least a second discharging pulse to said battery, said battery providing a discharging current primarily only during said discharging pulses; and repeating the above steps until a selected parameter has been achieved. A method for determining the condition of a battery, comprising the steps of: applying a charging pulse to said battery, said charging pulse causing a positive-going spike voltage to appear at said battery; measuring said positive-going spike voltage of said battery during said charging pulse; and evaluating said spike voltage.

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Method and apparatus for charging, thawing, and formatting a battery 원문보기

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Method and apparatus for charging, thawing, and formatting a battery 원문보기

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