Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells
Reexamination Certificate
2006-10-19
2009-10-13
Ullah, Akm E (Department: 2838)
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
C324S434000
Reexamination Certificate
active
07602144
ABSTRACT:
The present invention relates to a battery management system for securely maintaining battery charging capacity and precisely measuring a battery pack voltage. The battery management system, which is coupled to a battery including a plurality of battery cells as one battery pack, includes a sensing stabilization unit, a relay, a battery pack voltage measurement signal generating unit, and an analog/digital (A/D) converter. The sensing stabilization unit includes a first and a second signal lines electrically coupled to a first and a second terminals of the battery, respectively, and maintains a stable potential difference between the first and second signal lines. The relay is turned on in response to a control signal, and transmits the potential difference between the first and second signal lines. The battery pack voltage measurement signal generating unit outputs a predetermined level of battery pack voltage measurement signal that is produced based on the potential difference between the first and second signal lines. The A/D converter receives the battery pack voltage measurement signal and converts it into a digital signal.
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U.S. Appl. No. 11/583,118, filed Oct. 19, 2006, Han-Seok Yun et al.
Berhanu Samuel
Bushnell , Esq. Robert E.
Samsung SDI & Co., Ltd.
Ullah Akm E
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