Wireless battery management reverse wake up
AssigneeTexas Instruments Incorporated
InventorsShyam Krishnan Venkateswaran, Ariton E. Xhafa
Life of this patent
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Abstract
In some examples, a battery management system (BMS) includes a set of battery cells and a secondary network node coupled to the set of battery cells. The secondary network node is configured to, responsive to determination by the secondary network node of an exception event, wirelessly transmit a series of periodically repeating reverse wake up data frames to a primary network node. The secondary network node is also configured to, responsive to receipt of a synchronization frame from the primary network node after transmitting the series of reverse wake up data frames, transmit an uplink data frame to the primary network node.
Claims20
A battery management system (BMS), comprising:
- a set of battery cells;
- and
- a secondary network node coupled to the set of battery cells, the secondary network node configured to:
- responsive to determination by the secondary network node of an exception event, wirelessly transmit a series of periodically repeating reverse wake up data frames to a primary network node;
- and
- responsive to receipt of a synchronization frame from the primary network node after transmitting the series of reverse wake up data frames, transmit an uplink data frame to the primary network node.
A method, comprising:
- a secondary network node transmitting, responsive to determination of an exception event, a periodically repeating series of reverse wake up data frames to a primary network node;
- and
- responsive to receipt of a synchronization frame from the primary network node after transmitting the series of reverse wake up data frames, transmitting, by the secondary network node, an uplink data frame to the primary network node.
A method, comprising:
- while in a low power state, waking, by a primary network node, from the low power state for a sample duration;
- performing, by the primary network node, sampling during the sample duration;
- responsive to not detecting a reverse wake up data frame via the sampling, returning, by the primary network node, to the low power state;
- and
- responsive to detecting a reverse wake up data frame from among a series of reverse wake up data frames transmitted by a secondary network node, transmitting, by the primary network node, a synchronization frame after an end of the series of reverse wake up data frames.
Dependencies are inferred from the claim text.