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Electric storage apparatus

  • US 9,165,736 B2
  • Filed: 10/08/2013
  • Issued: 10/20/2015
  • Est. Priority Date: 10/11/2012
  • Status: Active Grant
First Claim
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1. A battery, comprising:

  • an output terminal configured to be electrically connected to a system including an engine;

    an electric storage device;

    a monitoring apparatus including a detector and a controller, the detector being configured to detect a variation value corresponding to an amount of charge of the electric storage device; and

    a relay connected to the output terminal and the electric storage device,wherein the controller is configured to;

    determine whether the variation value detected by the detector is equal to or lower than an opening threshold, the opening threshold being larger than an engine activation low-threshold by a predetermined value, the engine activation low-threshold being a lowest level of the amount of charge at which the engine is able to be started; and

    execute an opening process to switch a state of the relay from a closed state to an open state if the variation value is equal to or lower than the opening threshold.

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