Battery voltage measurement device
AssigneesMatsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsHirofumi Yudahira, Ichiro Maki, Naohisa Morimoto
Life of this patent
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Abstract
A battery voltage measurement device includes: a plurality of first switching sections, wherein each pair of adjacent first switching sections sequentially selects two output terminals of each of a plurality of battery blocks included in a battery pack; a level change section for changing a level of a battery voltage of each battery block which is input to the level change section via the first switching section; an A/D conversion section for performing an A/D conversion of battery voltage data output from the level change section; and a reference voltage control section for controlling an output of a reference voltage of the level change section according to the polarity of the voltage input to the level change section.
Claims20
A battery voltage measurement device comprising:
- a plurality of first switching sections, wherein each pair of adjacent first switching sections sequentially selects two output terminals of each of a plurality of battery blocks included in a battery pack;
- a level change section for changing a level of a battery voltage of each battery block which is input to the level change section via the first switching section;
- an A/D conversion section for performing an A/D conversion of battery voltage data output from the level change section;
- and
- a reference voltage control section for controlling an output of a reference voltage of the level change section according to the polarity of the battery voltage input to the level change section.
A battery voltage measurement device comprising:
- a battery pack including a plurality of battery blocks;
- a plurality of first switching sections, wherein each pair of adjacent first switching sections sequentially selects two output terminals of each of the plurality of battery blocks;
- a level change section for changing a level of a battery voltage of each battery block which is input to the level change section via the first switching section;
- an A/D conversion section for performing an A/D conversion of battery voltage data output from the level change section;
- and
- a reference voltage control section for controlling an output of a reference voltage of the level change section according to the polarity of the battery voltage input to the level change section.
Dependencies are inferred from the claim text.