Protection device for assembled battery, and battery pack unit

Details Protection device for assembled battery, and battery pack unit Protection device for assembled battery, and battery pack unit

2011-07-05

2011-07-05

Tso, Edward (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

C320S116000, C320S118000, C320S128000, C320S137000

Reexamination Certificate

active

07973534

ABSTRACT:
A protection device for an assembled battery includes a sampling unit which individually samples voltages of batteries of the assembled battery to generate sampled voltages, a holding unit which holds the sampled voltages to generate a plurality of holding voltages, a multiplexer which sequentially reads the holding voltages and outputs each voltage to a common output node, a measuring unit configured to measure the individual voltages and the state of charges of the batteries based on a voltage of the node in a measuring period within a constant measuring cycle, and a control unit configured to turn on/off the sample switches at the same time within the measuring period and repeatedly turn on/off at least one sample switch selected from the plurality of sample switches in accordance with the state of charge in a term other than the measuring period.

REFERENCES:
patent: 7696725 (2010-04-01), Liu et al.
patent: 2006/0261677 (2006-11-01), Shibuya et al.
patent: 2007/0046260 (2007-03-01), Ishikawa
patent: 2007/0273332 (2007-11-01), Funabashi et al.
patent: 1880967 (2006-12-01), None
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patent: 2006-322715 (2006-11-01), None
patent: 2007-6552 (2007-01-01), None
patent: WO 2006/068430 (2006-06-01), None
Chinese Office Action issued Mar. 1, 2010, in Patent Application No. 200810087492.7 (with English-language translation).

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