Battery communication system for battery packs
First Claim
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1. A battery pack, comprising:
- a battery monitoring integrated circuit (BMIC) associated with a grouping of battery cells;
a calibration microcontroller configured to store battery data associated with said grouping of battery cells;
a main microcontroller; and
a data transmission node establishing a shared path for communicating both a status signal from said BMIC and said battery data from said calibration microcontroller,wherein said status signal is a heartbeat signal that indicates an operating state of the BMIC,wherein said calibration microcontroller is configured to transmit said battery data only while the heartbeat signal is low.
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Abstract
A battery pack according to an exemplary aspect of the present disclosure includes, among other things, a battery monitoring integrated circuit (BMIC) associated with a grouping of battery cells, a calibration microcontroller configured to store battery data associated with the grouping of battery cells, a main microcontroller; and a data transmission node establishing a shared path for communicating both a status signal from the BMIC and the battery data from the calibration microcontroller.
50 Citations
25 Claims
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1. A battery pack, comprising:
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a battery monitoring integrated circuit (BMIC) associated with a grouping of battery cells; a calibration microcontroller configured to store battery data associated with said grouping of battery cells; a main microcontroller; and a data transmission node establishing a shared path for communicating both a status signal from said BMIC and said battery data from said calibration microcontroller, wherein said status signal is a heartbeat signal that indicates an operating state of the BMIC, wherein said calibration microcontroller is configured to transmit said battery data only while the heartbeat signal is low. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 21, 22)
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12. A method, comprising:
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transmitting battery data from a calibration microcontroller of a battery communication system of a battery pack along a path that is shared with a status signal from a battery monitoring integrated circuit (BMIC), wherein the status signal is a heartbeat signal that indicates an operating state of the BMIC, and wherein the battery data is transmitted over the path only while the heartbeat signal is low. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 23, 24, 25)
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Specification