Back to results
US 9,853,472 B2Granted
Secondary battery charging device, method of charging in secondary battery charging device, photovoltaic generator, method of power generation in photovoltaic generator, photovoltaic-charged secondary battery system, electronic device, and electrical vehicle
AssigneeSony Corporation
InventorsTsuyoshi Masato, Shinichi Uesaka
Life of this patent
Estimating the term…
Abstract
A battery charging device includes a battery pack including a plurality of battery cells connected in series, and a control unit. The control unit is configured to change a series connection of the battery cells in response to a variation in output voltage of a solar battery.
Claims19
A battery charging device, comprising:
- a battery pack including a plurality of battery cells connected in series;
- and
- a control unit configured to:
- estimate an output voltage of a solar battery at which output electrical power of the solar battery becomes a maximum for a measured solar radiation intensity;
- determine, for the estimated output voltage, a number of the plurality of battery cells in the series connection at which the output electrical power of the solar battery remains the maximum;
- and
- change the number of the plurality of battery cells in the series connection based on the determination.
4 more elements
A method for charging a battery charging device, the method comprising:
- in the battery charging device that includes a battery pack, the battery back including a plurality of battery cells connected in series:
- estimating an output voltage of a solar battery at which output electrical power of the solar battery becomes a maximum for a measured solar radiation intensity;
- determining, for the estimated output voltage, a number of the plurality of battery cells in the series connection at which the output electrical power of the solar battery remains the maximum;
- and
- changing the number of the plurality of battery cells in the series connection based on the determination.
2 more elements
A photovoltaic generator, comprising:
- a solar battery that includes a plurality of solar battery cells connected in series;
- and
- a control unit configured to:
- estimate an output voltage of the solar battery at which output electrical power of the solar battery becomes a maximum for a measured solar radiation;
- determine, for the estimated output voltage, a number of the plurality of solar battery cells in the series connection at which the output electrical power of the solar battery remains the maximum;
- and
- change the number of the plurality of solar battery cells in the series connection based on the determination.
4 more elements
A method of generating power, the method comprising:
- in a photovoltaic generator that includes a solar battery, the solar battery including a plurality of solar battery cells connected in series:
- estimating an output voltage of the solar battery at which output electrical power of the solar battery becomes a maximum for a measured solar radiation intensity;
- determining, for the estimated output voltage, a number of the plurality of solar battery cells in the series connection at which the output electrical power of the solar battery remains the maximum;
- and
- changing the number of the plurality of solar battery cells in the series connection based on the determination.
2 more elements
Dependencies are inferred from the claim text.