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Battery module of improved safety

  • US 10,632,848 B2
  • Filed: 07/23/2010
  • Issued: 04/28/2020
  • Est. Priority Date: 04/01/2009
  • Status: Active Grant
First Claim
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1. A battery module, comprising:

  • a plurality of stacked battery cells or unit modules;

    electrical connection regions extending from the battery cells or unit modules, the electrical connection regions electrically connecting the battery cells or unit modules;

    a heat sink mounted to at least one of the electrical connection regions, wherein the heat sink includes;

    a connection part; and

    a plurality of bar contact parts extending from the connection part perpendicular to the connection part, each bar contact part having a slit formed therein extending parallel to the connection part; and

    bus bars for connecting electrode terminals of the battery cells or unit modules to external input and output terminals, wherein portions of outsides of the bus bars are connected to the electrical connection regions,wherein, when the heat sink is mounted to the battery module, the electrical connection regions are inserted into the slits,wherein the heat sink is formed in a shape so as to not extend beyond outermost edges of the bus bars, and the heat sink is mounted to insides or outsides of the bus bars excluding said portions, andwherein an overall length of the heat sink in a first direction is less than an overall length of the plurality of stacked battery cells or unit modules in the first direction.

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