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Intelligent charging and discharging system for parallel configuration of series cells with semiconductor switching

  • US 9,166,419 B2
  • Filed: 10/30/2012
  • Issued: 10/20/2015
  • Est. Priority Date: 10/31/2011
  • Status: Active Grant
First Claim
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1. A battery pack for an electric vehicle, comprising:

  • a first battery arranged in parallel with a load of the electric vehicle;

    a second battery arranged in parallel with the first battery and the load;

    a first semiconductor switching module arranged in series with the first battery, the first semiconductor switching module being configured to selectively allow current flow from the first battery to the load and from the load to the first battery;

    a second semiconductor switching module arranged in series with the second battery, the second semiconductor switching module being configured to selectively allow current flow from the second battery to the load and from the load to the second battery; and

    a battery control module configured to;

    store charge data corresponding to respective charges of the first battery and the second battery;

    store usage data corresponding to respective ones of the first battery and the second battery, the usage data including at least one of past usage states and subsequent usage states of at least one of the first battery and the second battery;

    selectively turn on and off the first semiconductor switching module and the second semiconductor switching module based on the charge data; and

    selectively turn on and off the first semiconductor switching module and the second semiconductor switching module based on.

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