Back to results
US 10,833,375 B2Granted
Battery device, electronic device, electronic vehicle, power storage system, and control method
AssigneeMurata Manufacturing Co., Ltd.
InventorJunpei Ikeno
Life of this patent
Estimating the term…
Abstract
A battery device is provided. The battery includes a temperature detector configured to detect a temperature of a battery and a controller configured to perform variable current discharge on the battery when the temperature detector detects a constant temperature range immediately before a start of charge.
Claims15
A battery device, comprising:
- a temperature detector configured to detect a temperature of a battery;
- a controller configured to perform variable current discharge on the battery when the temperature detector detects a constant temperature range immediately before a start of charge,
- wherein the battery includes a plurality of secondary batteries that are connected and assembled in proximity to each other;
- a first balance correction circuit including a first switch configured to perform balance correction and connected to each of the secondary batteries and a plurality of resistors to which a current flowing through the first switch is supplied;
- and
- a second balance correction circuit including a second switch configured to perform balance correction and connected to each of the secondary batteries and a plurality of heater resistors to which a current flowing through the second switch is supplied,
- wherein the plurality of heater resistors are arranged in contact with or near one or more of the secondary batteries,
- wherein balance correction is performed by the first balance correction circuit at a chargeable temperature, and
- wherein after balance correction is performed by the second balance correction circuit at a dischargeable and non-chargeable temperature, a variable current discharge control is performed on the battery.
6 more elements
A control method comprising, by a controller,
- performing a variable current discharge control to increase a discharge current value and discharge a battery as a temperature of the battery rises at a dischargeable and non-chargeable temperature, wherein the battery includes a plurality of secondary batteries that are connected and assembled in proximity to each other;
- providing a first balance correction circuit including a first switch configured to perform balance correction and connected to each of the secondary batteries and a plurality of resistors to which a current flowing through the first switch is supplied;
- and
- providing a second balance correction circuit including a second switch configured to perform balance correction and connected to each of the secondary batteries and a plurality of heater resistors to which a current flowing through the second switch is supplied,
- wherein the plurality of heater resistors are arranged in contact with or near one or more of the secondary batteries,
- wherein balance correction is performed by the first balance correction circuit at a chargeable temperature, and
- wherein after balance correction is performed by the second balance correction circuit at a dischargeable and non-chargeable temperature, a variable current discharge control is performed on the battery.
4 more elements
Dependencies are inferred from the claim text.