System and method for communicating notice to limit degradation within a battery pack
First Claim
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1. A method for providing notice to limit degradation within a battery pack, comprising:
- coupling a plurality of battery pack electronic modules via a communication link;
generating a signal in a first battery pack electronic module, the first battery pack electronic module at a first end of the communication link;
transmitting the signal via the communication link; and
opening a battery output contactor electrically coupling a plurality of battery pack battery cell stacks to a load external to the battery pack in response to an absence of the signal at a second battery pack electronic module at a second end of the communication link.
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Abstract
Systems and methods for communicating notice to limit battery degradation within a battery pack are disclosed. In one example, a signal is generated and passed between modules of a battery pack to provide notice to limit battery pack degradation. The system and method may be particularly useful for a battery pack with distributed battery modules.
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Citations
20 Claims
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1. A method for providing notice to limit degradation within a battery pack, comprising:
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coupling a plurality of battery pack electronic modules via a communication link; generating a signal in a first battery pack electronic module, the first battery pack electronic module at a first end of the communication link; transmitting the signal via the communication link; and opening a battery output contactor electrically coupling a plurality of battery pack battery cell stacks to a load external to the battery pack in response to an absence of the signal at a second battery pack electronic module at a second end of the communication link. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for providing notice to limit degradation within a battery pack, comprising:
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a first module of a plurality of electronic modules in a battery pack, the first module including a signal generator configured to generate a signal; a second module of the plurality of electronic modules in the battery pack, the second module configured to monitor at least one battery cell, the second module further configured to pass and interrupt the signal; a third module of the plurality of electronic modules in the battery pack, the third module including a signal receiver, the signal receiver configured to receive the signal, the third module further including an output for controlling an output contactor of the battery pack, the output contactor controlling current from a plurality of battery cell stacks to a load external to the battery pack. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for providing notice to limit degradation within a battery pack, comprising:
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a signal generator configured to generate a signal; a first circuit for detecting a threshold condition of a battery pack, the first circuit also configured to pass and interrupt the signal; and a second circuit, the second circuit configured to open an output contactor of the battery pack in response to an absence of the signal at the second circuit for more than a predetermined amount of time, the output contactor electrically coupling a plurality of battery pack battery cell stacks to a load external to the battery pack. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification