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Battery pack having improved safety against leakage of liquid refrigerant

  • US 10,084,219 B2
  • Filed: 06/03/2014
  • Issued: 09/25/2018
  • Est. Priority Date: 06/07/2013
  • Status: Active Grant
First Claim
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1. A battery pack comprising:

  • at least one battery module comprising a battery cell stack constituted by two or more stacked battery cells that can be charged and discharged; and

    a pack case provided outside of the at least one battery module, whereina liquid refrigerant isolated from an inner space of the pack case removes heat conducted from the battery cells through cooling of the pack case,wherein the at least one battery module is mounted in a module case, the entire module case being spaced from the pack case,wherein the cooling fin comprises a plurality of first fin members, each first fin member being interposed between adjacent battery cells, and a second fin member connected to the plurality of first fin members and extending perpendicular to each first fin member, and the second fin member thermally contacting the pack case, wherein the second fin member is separate from the pack case, andwherein the pack case is provided with a first heat dissipation plate having a radiator structure formed at a contact surface of the pack case on which the second fin member thermally contacts the pack case, a second heat dissipation plate having a radiator structure for accelerating heat dissipation disposed at a portion of the outer surface of the pack case opposite to the contact surface of the pack case which the second fin member contacts, and a third heat dissipation plate having a radiator structure for accelerating heat exchange with a refrigerant disposed in the pack case.

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