G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 31/02 (2006.01) G01R 31/36 (2006.01) H01M 10/48 (2006.01) B60K 6/04 (2006.01)
Patent
CA 2322257
The present invention provides a battery voltage measuring device capable of immediately detecting a breakage in the voltage measuring line in a battery voltage measuring device that detects the battery voltage. In blocks formed by connecting a plurality of secondary batteries in series, voltage sensors that detect the voltage of each block are respectively provided. In addition, before these voltage sensors noise filters are provided, and in addition, a measuring line breakage detecting resistor for detecting a breakage in the voltage measuring line is connected in parallel to each block. In a battery voltage measuring device having this type of structure, in the case that the voltage measuring line Q is broken, the voltage values V1 and V2 detected by the voltage sensors 20-1 and 20-2 become voltage values that accompany the resistance ratio of the measuring line breakage detecting resistors 60-1 and 60-2. Thereby, the voltage sensor detects a voltage that is not normally detected, and as a result, it becomes possible to immediately detect the breakage in the voltage measuring line.
Maeda Tomohiko
Ohsawa Naoki
Tsurumi Takafumi
Honda Giken Kogyo Kabushiki Kaisha
Marks & Clerk
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