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US 11,145,917 B2Granted
Cell balancing network to heat battery pack
AssigneeInternational Business Machines Corporation
InventorsNoah Singer, Steven John Ahladas, Xiangfei Yu, Robert K. Mullady
Life of this patent
Estimating the term…
Abstract
A method for increasing temperature of a battery pack includes determining whether a temperature of a cell in the battery pack is above a lower threshold temperature. The method further includes charging, by a current directly from a charger, a balancing circuit including a resistor in proximity to the cell. The method also includes increasing the temperature of the cell in the battery pack.
Claims5
A method for increasing temperature of a battery pack, the method comprising:
- determining whether a temperature of a cell in the battery pack is above a lower threshold temperature, the cell coupled to an electronic device that is a printed circuit board, and a thermal interface material arranged between the cell and the printed circuit board;
- charging, by a current directly from a charger, a balancing circuit comprising a MOSFET and a plurality of resistors in proximity to the cell, the plurality of resistors each comprising a resistive wire wrapped around the cell in the battery pack;
- and
- increasing the temperature of the cell in the battery pack;
- wherein the current from the charger does not pass through the cell.
2 more elements
A method for increasing temperature of a battery pack, the method comprising:
- determining whether a temperature of a cell in the battery pack is above a lower threshold temperature, the cell coupled to an electronic device that is a printed circuit board, and a thermal interface material arranged between the cell and the printed circuit board;
- sending a current, directly from a charger, to a balancing circuit coupled to the cell to dissipate heat from a resistor, the balancing circuit comprising a MOSFET, and the resistor comprising a resistive wire wrapped around the cell in the battery pack;
- increasing the temperature of the cell in the battery pack;
- and
- discontinuing the current from the charger once the cell has reached an upper threshold temperature;
- wherein the current from the charger does not pass through the cell.
3 more elements
Dependencies are inferred from the claim text.