Battery module including gas cutoff structure
AssigneeLG Energy Solution, Ltd.
InventorsEun Gyu Shin, Jeong Oh Moon, Yoon Koo Lee, Eun Ah Ju
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Abstract
A battery module has a structure capable of preventing spread of flames when fire breaks out in the battery module, and more particularly a battery module including a plurality of battery cell module assemblies, each of the battery cell module assemblies including battery cells arranged in tight contact with each other, a side plate electrically connected to electrode leads of the battery cell module assemblies, a duct disposed outside the side plate, and a gas cutoff structure disposed in the duct, wherein the plurality of battery cell module assemblies is disposed so as to have a space therebetween.
Claims12
A battery module comprising:
- a plurality of battery cell module assemblies, each of the plurality of battery cell module assemblies comprising a plurality of battery cells arranged in contact with each other;
- a side plate electrically connected to electrode leads of the plurality of battery cell module assemblies;
- a duct formed between the side plate and an external wall spaced from the side plate;
- and
- a gas cutoff disposed in the duct,
- wherein the plurality of battery cell module assemblies is disposed so as to have a space therebetween,
- wherein the gas cutoff comprises a cutoff membrane configured to open and close the duct, a temperature fuse connected to a first end of the cutoff membrane, and an elastic body connected to a second end of the cutoff membrane opposite the first end of the cutoff membrane,
- wherein, when heat is generated in the battery module, the temperature fuse is cut off, the cutoff membrane is rotated by elastic force of the elastic body, whereby a flow of gas through the duct is cut off, and
- wherein an inner surface of the duct is provided with a projection configured to stop rotation of the cutoff membrane.
Dependencies are inferred from the claim text.