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US 9,071,067 B2Granted
Fast battery charging system and method
AssigneeLenovo (Singapore) Pte. Ltd.
InventorsKenneth Scott Seethaler, Tin-Lup Wong, Shigefumi Odaohhara, Jeremy Robert Carlson
Life of this patent
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Abstract
A system and method includes detecting whether a fast charger is coupled to a system having a processor and a memory, providing current to a battery from an internal charger circuit if no fast charger is detected, and providing current to the battery from the fast charger if the fast charger is detected.
Claims20
An apparatus comprising:
- an enclosure including a processor and memory;
- an internal charger to receive DC power from an external supply and provide charging current to charge a battery;
- a battery connector to receive the charging current from the internal charger and to provide current to the processor and memory;
- and
- a fast charge connector to receive a fast charging current from an external charger module and selectively couple the fast charging current to the battery connector, bypassing the internal charger.
2 more elements
A system comprising:
- an enclosure including a processor and memory;
- an internal charger within the frame to receive DC power from an external supply and provide charging current to charge a battery;
- a battery connector to receive the charging current from the internal charger and to provide current to the processor and memory from a battery when connected;
- a fast charge connector to receive a fast charging current from an external charger module when connected and selectively couple the fast charging current to the battery connector, bypassing the internal charger;
- an internal charger switch coupled between the internal charge circuit and the battery connector;
- a fast charger switch coupled between the fast charge connector and the battery connector, wherein the fast charge connector includes conductors to control the charger switches;
- and
- a current control device coupled between the fast charger connector and the fast charger switch.
5 more elements
A method comprising:
- detecting whether an external fast charger is coupled to a system having a processor and a memory;
- providing current to a battery from an internal charger circuit if no fast charger is detected;
- and
- providing current to the battery from the fast charger if the fast charger is detected, the internal charger.
1 more element
Dependencies are inferred from the claim text.