Battery voltage measurement device
AssigneesMatsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsNaohisa Morimoto, Ichiro Maki, Hirofumi Yudahira
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 so that each of the selected output terminals are connected to one of a pair of conductor wires; a voltage detection section for detecting a battery voltage of each of the plurality of battery blocks via the pair of conductor wires; and second switch sections each being provided on a respective one of the pair of conductor lines and being serially connected to each group of the plurality of first switch sections connected in parallel to one of the pair of conductor lines.
Claims10
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 so that each of the selected output terminals reconnected to one of a pair of conductor wires;
- a voltage detection section for detecting a battery voltage of each of the plurality of battery blocks via the pair of conductor wires;
- second switch sections each being provided on a respective one of the pair of conductor lines and being serially connected to each group of the plurality of first switch sections connected in parallel to one of the pair of conductor lines;
- a capacitance section laid between the pair of conductor lines for selectively storing a battery voltage of each of the battery blocks via the first and second switching sections;
- and
- a third switching section for selectively applying the battery voltage stored in the capacitance section to the voltage detection section,
- wherein
- the voltage detection section detects the battery voltage stored in the capacitance section via the third switching 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 so that each of the selected output terminals are connected to a respective one of a pair of conductor wires;
- a voltage detection section for detecting a battery voltage of each of the plurality of battery blocks via the pair of conductor wires;
- second switch sections each being provided on a respective one of the pair of conductor lines and being serially connected to each group of the plurality of first switch sections connected in parallel to one of the pair of conductor lines;
- a capacitance section laid between the pair of conductor lines for selectively storing a battery voltage of each of the battery blocks via the first and second switching sections;
- and
- a third switching section for selectively applying the battery voltage stored in the capacitance section to the voltage detection section,
- wherein
- the voltage detection section detects the batter voltage stored in the capacitance section via the third switching section.
Dependencies are inferred from the claim text.