Battery protection circuit module and battery pack comprising same

  • US 10,840,564 B2
  • Filed: 08/11/2016
  • Issued: 11/17/2020
  • Est. Priority Date: 08/20/2015
  • Status: Active Grant
First Claim
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1. A battery protection circuit module comprising:

  • a first positive terminal and a first negative terminal electrically connected to electrode terminals of a battery bare cell;

    a second positive terminal and a second negative terminal electrically connected to a charger or an electronic device;

    a first protection circuit unit comprising a first single field-effect transistor connected between at least one of the first positive and negative terminals and at least one of the second positive and negative terminals, and a first protection integrated circuit for controlling the first single field-effect transistor; and

    a second protection circuit unit comprising a second single field-effect transistor connected between at least one of the first positive and negative terminals and at least one of the second positive and negative terminals, and a second protection integrated circuit for controlling the second single field-effect transistor,wherein the first protection integrated circuit controls the first single field-effect transistor by detecting overcharge, overdischarge, and/or overcurrent of the battery bare cell,wherein the second protection integrated circuit controls the second single field-effect transistor by detecting overcharge, overdischarge, and/or overcurrent of the battery bare cell, andwherein the first protection circuit unit and the second protection circuit unit provide a dual protection circuit configuration for the battery bare cell.

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