LITHIUM-BASED BATTERY PACK FOR A HAND HELD POWER TOOL
First Claim
Patent Images
1. A battery pack for powering a hand held power tool, the battery pack comprising:
- a housing connectable to and supportable by the hand held power tool; and
a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 18 volts.
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Abstract
A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell.
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Citations
19 Claims
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1. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 18 volts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 14.4 volts.
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10. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 12 volts. - View Dependent Claims (11)
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12. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 9.6 volts. - View Dependent Claims (13)
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14. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 21 volts.
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15. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of at least approximately 24 volts.
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16. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, wherein each of the plurality of battery cells has a nominal voltage of approximately 3.6 volts and the plurality of battery cells includes less than five battery cells. - View Dependent Claims (17)
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18. A battery pack for powering a hand held power tool, the battery pack comprising:
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a housing connectable to and supportable by the hand held power tool; and a plurality of battery cells supported by the housing, the battery cells being capable of producing an average discharge current greater than or equal to approximately 20 amps, the battery cells having a lithium-based chemistry, the battery cells having a combined nominal voltage of between approximately 12 volts and approximately 24 volts. - View Dependent Claims (19)
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Specification