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US 12,119,683 B2Granted
Battery management device and battery device
AssigneeDenso Corporation
InventorsShogo Shigemori, Shunichi Kubo, Takeshi Iida, Yukihiro Tomonaga, Taisuke Kurachi, Shozo Suzuki, Shinya Kato
Life of this patent
Estimating the term…
Abstract
A battery management device is configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle. The battery management device is configured to measure the voltage of each of the plurality of batteries within the limited measurement range.
Claims9
A battery management device comprising:
- a range setting unit configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle, and
- a measuring unit configured to measure the voltage of each of the plurality of batteries within the limited measurement range,
- wherein
- the range setting unit sets the limited measurement range adjusted based on a voltage value of each of the plurality of batteries when the voltage value of each of the plurality of batteries is to be estimated, and
- the range setting unit sets the limited measurement range based on a measurement value for the voltage of each of the plurality of batteries within an entire range when the voltage value of each of the plurality of batteries is not to be estimated.
2 more elements
A battery management device comprising:
- a range setting unit configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle, and
- a measuring unit configured to measure the voltage of each of the plurality of batteries within the limited measurement range,
- wherein
- the range setting unit sets the limited measurement range and the measuring unit measures the voltage within the limited measurement range when a noise level is acceptable in a situation where a noise is acceptable, and
- the range setting unit sets the limited measurement range and the measuring unit measures the voltage within the limited measurement range when a power device that provides a driving force of the vehicle is stopped and charging or discharging of each of the plurality of batteries is stopped.
2 more elements
A battery management device comprising:
- a range setting unit configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle, and
- a measuring unit configured to measure the voltage of each of the plurality of batteries within the limited measurement range,
- further comprising
- an equalization determination unit configured to determine whether or not to perform an equalization process for reducing a voltage variation for a predetermined battery group including at least a part of the plurality of batteries, wherein
- the equalization determination unit determines whether or not to perform the equalization process based on a measurement value for the voltage of each of the plurality of batteries measured within the limited measurement range.
2 more elements
A battery management device comprising:
- a range setting unit configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle, and
- a measuring unit configured to measure the voltage of each of the plurality of batteries within the limited measurement range,
- further comprising
- an equalization determination unit configured to determine whether or not to perform an equalization process for reducing voltage variation for a predetermined battery group including at least a part of the plurality of batteries, wherein
- the equalization determination unit sets a determination threshold value according to a width of the limited measurement range,
- when a difference between a maximum voltage measurement value and a minimum voltage measurement value each measured for the predetermined battery group is smaller than the determination threshold value, the equalization determination unit determines not to perform the equalization process, and
- when the difference is greater than the determination threshold value, the equalization determination unit determines to perform the equalization process.
4 more elements
A battery management device comprising:
- a range setting unit configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle, and
- a measuring unit configured to measure the voltage of each of the plurality of batteries within the limited measurement range,
- wherein
- when the battery management device is switched from a non-driving state to a driving state, the range setting unit sets the range for measuring the voltage to a usable range of each of the plurality of batteries.
1 more element
A battery device comprising:
- a plurality of batteries for a vehicle;
- a range setting unit configured to set a limited measurement range that limits a range for measuring a voltage of each of the plurality of batteries;
- and
- a measuring unit configured to measure the voltage of each of the plurality of batteries within the limited measurement range,
- wherein
- the range setting unit sets the limited measurement range adjusted based on a voltage value of each of the plurality of batteries when the voltage value of each of the plurality of batteries is to be estimated, and
- the range setting unit sets the limited measurement range based on a measurement value for the voltage of each of the plurality of batteries within an entire range when the voltage value of each of the plurality of batteries is not to be estimated.
4 more elements
Dependencies are inferred from the claim text.