Battery pack fault communication and handling
First Claim
1. A battery pack fault communication and handling system comprising:
- a battery module comprising at least one battery, wherein the battery module is configured to supply a voltage to a high-voltage circuit;
a fault bus; and
a Battery Management System (BMS) coupled to the battery module via the fault bus, wherein the BMS is configured to transmit a heartbeat signal to the battery module via the fault bus and to receive the heartbeat signal back from the battery module via the fault bus, and wherein the BMS is configured to shut off the supply of voltage from the battery module to the high-voltage circuit in response to the battery module preventing the BMS from receiving the heartbeat signal.
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Accused Products
Abstract
A method of handling a fault in a battery pack, the method comprising: a battery module supplying a voltage to a high-voltage circuit; a battery management system transmitting a heartbeat signal to the battery module via a fault bus; the battery module preventing the heartbeat signal from being transmitted back to the battery management system in response to the battery module detecting a critical condition; and the battery management system shutting off the supply of voltage from the battery module to the high-voltage circuit in response to the battery module preventing the heartbeat signal from being transmitted back to the battery management system. The battery module transmits battery data to the battery management system via a communication bus, which is distinct from the fault bus, and the battery management system transmits one or more commands to the battery module via the communication bus.
80 Citations
44 Claims
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1. A battery pack fault communication and handling system comprising:
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a battery module comprising at least one battery, wherein the battery module is configured to supply a voltage to a high-voltage circuit; a fault bus; and a Battery Management System (BMS) coupled to the battery module via the fault bus, wherein the BMS is configured to transmit a heartbeat signal to the battery module via the fault bus and to receive the heartbeat signal back from the battery module via the fault bus, and wherein the BMS is configured to shut off the supply of voltage from the battery module to the high-voltage circuit in response to the battery module preventing the BMS from receiving the heartbeat signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A battery pack fault communication and handling system comprising:
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a plurality of battery stacks, each battery stack comprising a plurality of batteries configured to supply a voltage to a high-voltage circuit; a plurality of Battery-Monitoring-Units (BMUs), wherein each BMU corresponds to and is coupled to a distinct battery stack in the plurality of battery stacks, and each BMU is configured to monitor data about the plurality of batteries in the corresponding battery stack; a communication bus; a fault bus distinct from the communication bus; and a Battery-Management-System (BMS) coupled to the plurality of BMUs via the communication bus and via the fault bus, wherein the BMS is configured to receive battery data from the plurality of BMUs and to send one or more commands to the plurality of BMUs via the communication bus, wherein the BMS is configured to send a heartbeat signal to the plurality of BMUs via the fault bus and to receive the heartbeat signal back from the BMUs via the fault bus, and wherein the BMS is configured to shut off the supply of voltage from the battery stacks to the high-voltage circuit in response to one of the BMUs preventing the BMS from receiving the heartbeat signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of handling a fault in a battery pack, the method comprising:
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a battery module supplying a voltage to a high-voltage circuit; a Battery-Management-System (BMS) transmitting a heartbeat signal to the battery module via a fault bus; the battery module preventing the heartbeat signal from being transmitted back to the BMS in response to the battery module detecting a critical condition; and the BMS shutting off the supply of voltage from the battery module to the high-voltage circuit in response to the battery module preventing the heartbeat signal from being transmitted back to the BMS. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification