| US 7,557,585 B2 | ||
| Abnormal voltage detection apparatus for detecting voltage abnormality in assembled battery | ||
| Hirofumi Yudahira, Kagoshima (Japan) | ||
| Assigned to Panasonic EV Energy Co., Ltd., Kosai-Shi (Japan) | ||
| Filed on Jun. 20, 2005, as Appl. No. 11/157,021. | ||
| Claims priority of application No. 2004-181995 (JP), filed on Jun. 21, 2004. | ||
| Prior Publication US 2006/0001403 A1, Jan. 05, 2006 | ||
| Int. Cl. G01N 27/416 (2006.01); H02J 7/00 (2006.01) | ||
| U.S. Cl. 324—433 [324/434; 320/132] | 12 Claims |
| 1. An abnormal voltage detection apparatus for use in an assembled battery comprising a plurality of battery blocks connected
in series to each other, said abnormal voltage detection apparatus detecting voltage abnormality in said assembled battery,
each battery block comprising at least one secondary battery, said abnormal voltage detection apparatus comprising:
a plurality of signal detectors each provided in each of said battery blocks, each of said signal detectors:
detecting either one of voltage abnormality and normality of said each battery block based on a voltage of said each battery
block,
generating an abnormality detecting signal containing information about either detected one of the voltage abnormality and
normality, and
outputting the abnormality detecting signal, wherein said signal detectors simultaneously detect the respective voltages of
said battery blocks;
a signal generator connected with the plurality of signal detectors to receive the abnormality detecting signals, the signal
generator generating an abnormality detecting information signal containing information about whether or not a voltage abnormality
is present in any of said battery blocks based on the abnormality detecting signals; and
a first transmission device directly connected to the abnormality detecting information signal generated by the signal generator,
the first transmission device having an input terminal pair and an output terminal pair which are electrically insulated from
each other, said first transmission device transmitting the abnormality detecting information signal to an external apparatus,
wherein the abnormality detecting information signal turns the first transmission device on when any of said battery blocks
has a voltage abnormality and wherein the abnormality detecting information signal turns the first transmission device off
when none of the plurality of signal detectors detect voltage abnormality in the battery blocks.
|