Battery voltage measurement apparatus
AssigneeNEC Electronics Corporation
InventorManabu Miyamoto
Life of this patent
Estimating the term…
Abstract
A voltage measurement circuit includes a plurality of voltage input terminals that are supplied with voltage outputted by secondary batteries via voltage measurement lines, a plurality of voltage sensors connected between each of the plurality of voltage input terminals; and a plurality of constant current sources that are connected between the plurality of the voltage input terminals and supply the plurality of voltage input terminals being connected with specified voltage when the voltage measurement line is disconnected.
Claims8
A voltage measurement circuit comprising:
- a plurality of voltage input terminals that are supplied with voltage outputted by secondary batteries via voltage measurement lines;
- a plurality of voltage sensors connected between the plurality of voltage input terminals;
- and
- a selected one of a plurality of suction-type current sources and a plurality of discharge-type current sources that are connected between the plurality of the voltage input terminals.
A voltage measurement circuit comprising:
- a first voltage input terminal to which a voltage outputted by a secondary battery via a first voltage measurement line is applied;
- a second voltage input terminal to which a voltage outputted by a secondary battery via a second voltage measurement line is applied;
- a third voltage input terminal to which a voltage outputted by a secondary battery via a third voltage measurement line is applied;
- a first voltage sensor connected between the first voltage input terminal and the second voltage input terminal;
- a second voltage sensor connected between the second voltage input terminal and the third voltage input terminal;
- a first current source connected between the first voltage input terminal and the second voltage input terminal;
- and
- a second current source connected between the first voltage input terminal and the third voltage input terminal.
A voltage measurement circuit comprising:
- a first voltage input terminal to which a voltage outputted by a secondary battery via a first voltage measurement line is applied;
- a second voltage input terminal to which a voltage outputted by a secondary battery via a second voltage measurement line is applied;
- a third voltage input terminal to which a voltage outputted by a secondary battery via a third voltage measurement line is applied;
- a fourth voltage input terminal to which a voltage outputted by a secondary battery via a fourth voltage measurement line is applied;
- a plurality of voltage sensors connected between each of the first to fourth voltage input terminals;
- a first current source connected between the first voltage input terminal and the second voltage input terminal;
- and
- a second current source connected between the third voltage input terminal and the fourth voltage input terminal.
Dependencies are inferred from the claim text.