Title:
BATTERY PACK VOLTAGE MEASURING DEVICE AND BATTERY CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018125930
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a battery control device capable of detecting a failure part and a failure state of a battery pack voltage measuring circuit.SOLUTION: The battery pack voltage measuring device (140) measures voltages of battery packs (112a, 112b) in each of which a plurality of secondary batteries (111) is connected in series. The battery pack voltage measuring device (140) includes: a plurality of series resistors (141, 1400) connected in series to a power supply line (113); and a ground-side voltage dividing resistor (1410) connected to an end of the series resistors. Among the series resistors (141), one resistor is a two-series two-parallel circuits (1401, 1402, 1403, 1404). Ground-side voltage dividing resistors (1411, 1412) are circuits in which resistances are two in parallel.SELECTED DRAWING: Figure 2
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Inventors:
YOSHIOKA YUJI
Application Number:
JP2017014974A
Publication Date:
August 09, 2018
Filing Date:
January 31, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
H02J7/00; H01M10/48; H02J7/02
Attorney, Agent or Firm:
Yuji Toda