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Communication system for battery management systems in electric or hybrid vehicles

  • US 10,131,246 B2
  • Filed: 04/02/2018
  • Issued: 11/20/2018
  • Est. Priority Date: 04/05/2017
  • Status: Active Grant
First Claim
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1. A communication system for battery management systems in a vehicle, the communication system comprising:

  • a communication bus; and

    a plurality of battery management systems configured to communicate with one another via the communication bus and reboot at the same time so that a reboot time is set at boot of the plurality of battery management systems, the plurality of battery management systems comprising a first battery management system and a second battery management system,wherein the first battery management system is configured to;

    determine from a first identifier a first time slot of a plurality of time slots starting from the reboot time in which to transmit via the communication bus,monitor a first battery, andsubsequent to the reboot time, transmit a first message via the communication bus in the first time slot and not in the plurality of time slots other than the first time slot, the first message comprising first information about the first battery,wherein the second battery management system is configured to;

    determine from a second identifier a second time slot of the plurality of time slots starting from the reboot time in which to transmit via the communication bus, the second identifier being different from the first identifier,monitor a second battery different from the first battery, the second battery and the first battery being configured to individually and together power an electronic device, andsubsequent to the reboot time, transmit a second message via the communication bus in the second time slot and not in the plurality of time slots other than the second time slot, the second message comprising second information about the second battery.

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