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US 11,641,118 B2Granted
Methods and apparatus for a battery system to control leakage at terminals
AssigneeSemiconductor Components Industries, LLC
InventorHideo Kondo
Life of this patent
Estimating the term…
Abstract
Various embodiments of the present technology may provide methods and apparatus for a battery system. The apparatus may provide a fuel gauge circuit that operates in conjunction with a protection circuit to control discharging and/or current leakage at exposed terminals of the apparatus.
Claims20
An apparatus, comprising:
- a battery comprising:
- a positive terminal connected to a first power line;
- and
- a negative terminal connected to a second power line;
- a protection control circuit configured to monitor:
- a voltage of the battery via a voltage monitor terminal connected to the second power line;
- and
- a current of the battery via a current monitor terminal connected to the second power line;
- a charge control device integrated within the second power line and responsive to the protection control circuit;
- a discharge control device integrated within the second power line and responsive to the protection control circuit;
- and
- a fuel gauge circuit configured to determine a remaining capacity of the battery, and further configured to:
- connect the first power line to the current monitor terminal when the monitored voltage is less than a threshold voltage and the remaining capacity is less than or equal to a remaining capacity threshold.
10 more elements
An apparatus, comprising:
- a battery comprising:
- a positive terminal connected to a first power line;
- and
- a negative terminal connected to a second power line;
- a protection control circuit configured to monitor:
- a voltage of the battery via a voltage monitor terminal connected to the second power line;
- and
- a current of the battery via a current monitor terminal connected to the second power line;
- a charge control device integrated within the second power line and responsive to the protection control circuit;
- a discharge control device integrated within the second power line and responsive to the protection control circuit;
- and
- a fuel gauge circuit configured to monitor the voltage of the battery, determine a remaining capacity of the battery, compare the monitored voltage to a predetermined threshold voltage, and compare the determined remaining capacity to a remaining capacity threshold, the fuel gauge circuit further configured to:
- selectively connect the first power line to the current monitor terminal when the monitored voltage is less than the threshold voltage and the remaining capacity is less than or equal to the remaining capacity threshold and disconnect the first power line from the current monitor terminal after the protection control circuit disables the discharge control device.
10 more elements
A system, comprising:
- a charger;
- a host device;
- and
- a battery pack connected to the charger and the host device, and comprising:
- a first I/O terminal, a second I/O terminal, and a third I/O terminal and a fourth I/O terminal;
- a battery comprising a positive terminal connected to the first I/O terminal via a first power line and a negative terminal connected to the fourth I/O terminal via a second power line;
- a protection control circuit connected to the second power line via a voltage monitor terminal and a current monitor terminal;
- a charge control device integrated within the second power line and responsive to the protection control circuit;
- a discharge control device integrated within the second power line and responsive to the protection control circuit;
- and
- a fuel gauge circuit connected to the first power line, the second I/O terminal, the third I/O terminal, and the current monitor terminal, wherein the fuel gauge circuit is configured to determine a remaining capacity of the battery, and further configured to:
- connect the first power line to the current monitor terminal when a monitored voltage of the battery is less than a threshold voltage and the remaining capacity is less than or equal to a remaining capacity threshold.
9 more elements
Dependencies are inferred from the claim text.