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BATTERY PACK AND OVERDISCHARGE CONTROL METHOD THEREOF

  • US 20190326648A1
  • Filed: 03/25/2019
  • Published: 10/24/2019
  • Est. Priority Date: 04/24/2018
  • Status: Active Grant
First Claim
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1. A battery pack comprising a battery and a battery management system electrically connected to the battery to control and manage charging and discharging of the battery, the battery management system comprising:

  • an external terminal configured to connect to a charger or an external electronic device;

    a cell terminal connected to the battery;

    a charge FET and a discharge FET connected in series between the external terminal and the cell terminal;

    a voltage sensor connected to the cell terminal to measure a voltage of the battery;

    a comparator to compare the battery voltage with a reference voltage to determine whether the battery pack is in an overdischarged state; and

    a controller to control the charge FET to prevent charging of the battery if the comparator determines that the battery pack is in the overdischarged state.

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