BATTERY PACK WITH BALANCING MANAGEMENT
First Claim
1. A battery management system for a battery pack comprising a plurality of battery modules, each of said battery modules comprising a plurality of battery cells, said battery management system comprising:
- a plurality of first balancing units, each of said first balancing units coupled to a respective battery module;
a plurality of first controllers, each of said first controllers coupled to a respective battery module and a respective first balancing unit, wherein said first controllers are operable for controlling said first balancing units to adjust voltages of battery cells in said battery module if an unbalance occurs between said battery cells;
a second balancing unit comprising a plurality of second balancing circuits, each of said second balancing circuits coupled to a respective battery module;
a second controller coupled to said battery modules and said second balancing circuits, wherein said second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules.a detection circuit coupled to a respective battery module and operable for monitoring a voltage of said battery module and determining if an over voltage condition occurs on said battery module; and
a third balancing circuit coupled to said battery module and said detection circuit and operable for adjusting said voltage of said battery module if said over voltage condition occurs on said battery module.
1 Assignment
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Accused Products
Abstract
A battery management system for a battery pack comprising multiple battery modules is disclosed. Each of the battery modules includes multiple battery cells. The battery management system includes multiple first balancing units, multiple first controllers, a second balancing unit including multiple second balancing circuits, and a second controller coupled to the battery modules and the second balancing circuits. The first controllers are operable for controlling the first balancing units to adjust voltages of battery cells in the battery module if an unbalance occurs between the battery cells. The second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules.
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Citations
20 Claims
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1. A battery management system for a battery pack comprising a plurality of battery modules, each of said battery modules comprising a plurality of battery cells, said battery management system comprising:
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a plurality of first balancing units, each of said first balancing units coupled to a respective battery module; a plurality of first controllers, each of said first controllers coupled to a respective battery module and a respective first balancing unit, wherein said first controllers are operable for controlling said first balancing units to adjust voltages of battery cells in said battery module if an unbalance occurs between said battery cells; a second balancing unit comprising a plurality of second balancing circuits, each of said second balancing circuits coupled to a respective battery module; a second controller coupled to said battery modules and said second balancing circuits, wherein said second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules. a detection circuit coupled to a respective battery module and operable for monitoring a voltage of said battery module and determining if an over voltage condition occurs on said battery module; and a third balancing circuit coupled to said battery module and said detection circuit and operable for adjusting said voltage of said battery module if said over voltage condition occurs on said battery module. - View Dependent Claims (2, 3, 4)
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5. An electric vehicle, comprising:
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a battery pack comprising a plurality of battery modules, each of said battery modules comprising a plurality of battery cells; a battery management system coupled to said battery pack and operable for adjusting voltages of said battery cells if an unbalance occurs between battery cells and for adjusting voltages of said battery modules if an unbalance occurs between battery modules; a controller circuitry coupled to said battery management system; and an engine coupled to said controller circuitry and operable for providing energy to said electric vehicle, wherein said controller circuitry controls a power supply from said battery pack to said engine. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification