BATTERY PACK WITH BALANCING MANAGEMENT
First Claim
1. A battery management system for a battery pack comprising:
- a plurality of battery modules;
a plurality of first balancing units coupled to the plurality of battery modules;
a plurality of second balancing units coupled to the plurality of battery modules, wherein first balancing units of the plurality of first balancing units and second balancing units of the plurality of second balancing units are coupled to each respective battery module; and
a plurality of controllers coupled to the plurality of battery modules, wherein each controller is coupled to a respective battery module, wherein a first controller of the plurality of controllers is operable to control a first balancing unit of a first battery module to adjust a voltage output of the first battery module when the first controller determines the voltage output of the first battery module is greater than a combined voltage output of the first battery module and a second battery module, and wherein the first controller of the plurality of controllers is further operable to control a second balancing unit of the first battery module to adjust the combined voltage output of the first battery module and the second battery module when the first controller determines the combined voltage output of the first battery module and the second battery module is greater than the voltage output of the first battery module.
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Accused Products
Abstract
A battery management system for a battery pack includes a plurality of battery modules and a plurality of first balancing units coupled to the plurality of battery modules. The battery management system also includes a plurality of second balancing units coupled to the plurality of battery modules, wherein a first balancing unit of the plurality of first balancing units and a second balancing unit of the plurality of second balancing units are coupled to each respective battery module. Lastly, the battery management system includes a plurality of controllers coupled to the plurality of battery modules, wherein each controller is coupled to a respective battery module. A first controller of the plurality of controllers is operable to control a first balancing unit of a first battery module to adjust a voltage output of the first battery module when the first controller determines the voltage output of the first battery module is greater than a combined voltage output of the first battery module and a second battery module. The first controller of the plurality of controllers is further operable to control a second balancing unit of the first battery module to adjust the combined voltage output of the first battery module and the second battery module when the first controller determines the combined voltage output of the first battery module and the second battery module is greater than the voltage output of the first battery module.
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Citations
20 Claims
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1. A battery management system for a battery pack comprising:
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a plurality of battery modules; a plurality of first balancing units coupled to the plurality of battery modules; a plurality of second balancing units coupled to the plurality of battery modules, wherein first balancing units of the plurality of first balancing units and second balancing units of the plurality of second balancing units are coupled to each respective battery module; and a plurality of controllers coupled to the plurality of battery modules, wherein each controller is coupled to a respective battery module, wherein a first controller of the plurality of controllers is operable to control a first balancing unit of a first battery module to adjust a voltage output of the first battery module when the first controller determines the voltage output of the first battery module is greater than a combined voltage output of the first battery module and a second battery module, and wherein the first controller of the plurality of controllers is further operable to control a second balancing unit of the first battery module to adjust the combined voltage output of the first battery module and the second battery module when the first controller determines the combined voltage output of the first battery module and the second battery module is greater than the voltage output of the first battery module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of balancing a plurality of battery modules in a battery pack comprising:
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comparing a voltage output of a first battery module to a combined voltage output of the first battery module and a second battery module; and adjusting the voltage output of the first battery module when the voltage output of the first battery module is greater than the combined voltage output of the first battery module and the second battery module, and adjusting the combined voltage output of the first battery module and the second battery module when the combined voltage output of the first battery module and the second battery module is greater than the voltage output of the first battery module. - View Dependent Claims (12, 13, 14, 15)
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16. A battery management system for a battery pack comprising:
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a means for comparing a voltage output of a first battery module to a combined voltage output of the first battery module and a second battery module; and a means for adjusting the voltage output of the first battery module when the voltage output of the first battery module is greater than the combined voltage output of the first battery module and the second battery module, and adjusting the combined voltage output of the first battery module and the second battery module when the combined voltage output of the first battery module and the second battery module is greater than the voltage output of the first battery module. - View Dependent Claims (17, 18, 19, 20)
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Specification