System having electronics for dropping current of battery pack
First Claim
1. A battery pack system, comprising:
- a battery pack including a plurality of parallel groups connected in series, each parallel group including a plurality of batteries connected in parallel; and
electronics configured to discharge the battery pack at a first current level and to drop the current from the first current level to a second current level while discharging the battery pack, the second current level being lower than the first current level.
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Abstract
A battery pack system is disclosed. The battery pack system includes a battery pack having batteries arranged in a plurality of parallel groups that are connected in series. Each parallel group includes a plurality of the batteries connected in parallel. The electronics are configured to drop the current at which the battery pack is operating from a first current level to a second current level one or more times. The second current level is lower than the first current level. The electronics can drop the current from the first current level to the second current level during the charge and/or discharge of the battery pack. In some instances, the electronics intermittently drop the current from the first current level to the second current level during the charge and/or discharge of the battery pack.
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Citations
23 Claims
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1. A battery pack system, comprising:
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a battery pack including a plurality of parallel groups connected in series, each parallel group including a plurality of batteries connected in parallel; and electronics configured to discharge the battery pack at a first current level and to drop the current from the first current level to a second current level while discharging the battery pack, the second current level being lower than the first current level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A battery pack system, comprising:
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a plurality of system parallel groups connected in series, each system parallel group including a plurality of battery packs connected in parallel; each battery pack including a plurality of parallel groups connected in series, each parallel group including a plurality of batteries connected in parallel; electronics configured to discharge the battery packs at a first current level and to drop the current from the first current level to a second current level one or more times while discharging the battery pack, the second current level being lower than the first current level; the electronics being configured to stop intermittently dropping the current from the first current level to the second current level when the first current level rises above an upper current threshold; and the electronics being configured to stop intermittently dropping the current from the first current level to the second current level when the first current level falls below a lower current threshold.
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15. A battery pack system, comprising:
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a plurality of battery packs connected in parallel, each battery pack including a plurality of parallel groups connected in series, each parallel group including a plurality of batteries connected in parallel, a portion of the battery packs being high power sources and a portion of the battery packs being low power sources, the high power source having a mass based power density that is more than the mass based power density of the low power sources; electronics configured to discharge the battery packs at a first current level and to drop the current from the first current level to a second current level one or more times while discharging the battery pack, the second current level being lower than the first current level.
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16. A battery pack system, comprising:
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a pack assembly having a plurality of system parallel groups connected in series, each system parallel group including a plurality of battery packs connected in parallel; electronics configured to discharge the pack assembly at a first current level and to drop the current from the first current level to a second current level one or more times while discharging the pack assembly, the second current level being lower than the first current level. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification