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Uninterruptible battery power for electric motor vehicle

  • US 8,987,935 B2
  • Filed: 12/30/2011
  • Issued: 03/24/2015
  • Est. Priority Date: 12/30/2011
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an electrically operated bypass switch configured to form a closed electrical bypass circuit path across a first member battery of a battery array of N series-connected member batteries responsive to activation, wherein N is a positive integer greater than one, said bypass switch comprising;

    a double-pole N-contact selector switch, said selector switch configured to have no electrical connection between the two poles and, while normally deactivated, have neither pole electrically connected to any of the associated N contacts, the first set of N contacts configured to be individually electrically connected to positive terminals of said member batteries, and, likewise, the second set of N contacts configured to be individually electrically connected to negative terminals of said member batteries, and responsive to activation, the activated selector switch configured to make the first pole selectively electrically connectable to any of said first set of N contacts thereof and the second pole selectively electrically connectable to any of said second set of N contacts thereof;

    a normally-open single-pole single-throw pole-connect switch, said pole-connect switch configured to be electrically connected across said two poles of said selector switch and, responsive to activation, the activated pole-connect switch configured to electrically connect said two poles together; and

    wherein said activated bypass switch is configured to have said two poles of said selector switch electrically connected to the contacts thereof that are electrically connected to the positive terminal and negative terminal, respectively, of said first member battery and have said pole-connect switch electrically connect said two poles of said selector switch together; and

    a switch activator module configured to activate said bypass switch in response to detection of a failure in said first member battery.

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