BATTERY PACK WITH IMPROVED SAFETY

A battery pack according to an embodiment of the present invention comprises: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; a pack case which is configured to store the cell module assembly, and has an open upper surface; and a fire extingui...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KIM, Kiyoun, MOON, Jeong Oh, LEE, Seongju, LEE, Jaeki, PARK, Gidong, AHN, Jong Kyu, KIM, Hyeon Kyu, YUN, Youngwon
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A battery pack according to an embodiment of the present invention comprises: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; a pack case which is configured to store the cell module assembly, and has an open upper surface; and a fire extinguishing tank which is positioned above the cell module assembly and covers the pack case, the fire extinguishing tank including an inner space, which accommodates a fire extinguishing agent, and a plurality of weak parts, which are portions in which the thickness of a base plate of the fire extinguishing tank is relatively thin, wherein the weak parts open by melting due to heat from the battery cell when the battery cell overheats.