Electricity: battery or capacitor charging or discharging – Battery or cell charging – With thermal condition detection
Reexamination Certificate
2008-10-15
2010-06-01
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Battery or cell charging
With thermal condition detection
C320S152000, C323S282000, C323S283000, C323S284000, C323S285000
Reexamination Certificate
active
07728559
ABSTRACT:
A charging device that may perform charging with larger current is provided. The charging device comprises a switching element for increasing or decreasing charging power, a PWM controlling circuit for intermittently turning the switching element on and off, a current detecting circuit for detecting current flowing through the switching element, and a correcting circuit for correcting output voltage of the current detecting circuit depending on the temperature of the switching element. The PWM controlling circuit has a limiter terminal for turning off the switching element when voltage equal to or above a predetermined value is input, and corrected voltage from the correcting circuit is input to the limiter terminal.
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English Translation of the Japanese Office Action for Application No. 2003-369597.
Communication pursuant to Article 96(2) EPC; Sep. 21, 2005.
European Search Report, Issued Sep. 9, 2005.
European Search Report, Issued Feb. 2, 2005.
European Search Report, Issued Apr. 27, 2005.
Makita Corporation
Muralidar Richard V
Orrick Herrington & Sutcliffe LLP
Tso Edward
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