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Passive architectures for batteries having two different chemistries

  • US 10,020,485 B2
  • Filed: 12/12/2017
  • Issued: 07/10/2018
  • Est. Priority Date: 07/31/2013
  • Status: Active Grant
First Claim
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1. An automotive vehicle comprising:

  • a 12 volt battery module, wherein the 12 volt battery module comprises;

    a first battery electrically coupled between a positive terminal and a negative terminal of the 12 volt battery module, wherein the first battery comprises a first battery chemistry;

    a second battery electrically coupled between the positive terminal and the negative terminal of the 12 volt battery module in parallel with the first battery, wherein the second battery comprises a second battery chemistry that has a higher charge acceptance rate than the first battery chemistry; and

    an alternator electrically coupled to the positive terminal and the negative terminal of the 12 volt battery module; and

    a control unit communicatively coupled to the alternator, wherein the control unit is programmed to, while the automotive vehicle is accelerating or cruising, micro-cycle the 12 volt battery module by;

    instructing the alternator to output electrical power used to charge the 12 volt battery module when a first state of charge of the first battery is depleted to a lower state of charge threshold; and

    instructing the alternator to cease outputting electrical power to the 12 volt battery module when the first state of charge of the first battery is charged up to an upper state of charge threshold.

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