BATTERY SYSTEM
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United States of America Patent
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Issued Date -
Jun 14, 2012
app pub date -
Mar 15, 2011
filing date -
Mar 17, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A battery system (1) includes: an electrical cell (2) which is accommodated in each battery accommodation casing (22) so that at least one of first facing side surfaces (51) and (52) in a stacking direction (X) of a stacked structure and at least one of second facing side surfaces (53) and (54) in the direction (Y) lying at right angles to the stacking direction (X) faces the battery accommodation casing wall surface (22a) or the battery accommodation casing partition plate wall surface (23a); separation state detecting devices (24a) and (24b) for detecting a first separation distance (W1) between the first side surfaces (51) and (52) and any one of the wall surfaces (22a) and (23a) and a second separation distance (W2) between the second side surfaces (53) and (54) and any one of the wall surfaces (22a) and (23a); and a control unit that determines that the corresponding secondary battery (2) has an abnormal internal pressure when both the first separation distance (W1) and the second separation distance (W2) become smaller on the basis of the detection result obtained by the separation state detecting devices (24a) and (24b).
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