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US 10,319,968 B2Granted
Battery pack
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsYuki Chujo, Takayuki Kato, Hiromi Ueda, Fumihiko Ishiguro
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Abstract
A battery pack has a sealed case. Battery modules are housed in the sealed case. Each battery module contains multiple battery cells. The sealed case has a main body having an opening. The opening in the main body is closed by a rectangular plate-shaped lid member. The lid member has a first releasing portion and a second releasing portion, which are opened when the internal pressure of the sealed case increases. The second releasing portion is arranged below the first releasing portion in the vertical direction.
Claims12
A battery pack comprising:
- a plurality of battery cells, each of which includes a case having a pressure relief valve and an electrode assembly accommodated in the case;
- a sealed case, which accommodates the battery cells;
- and
- releasing portions, which are provided in the sealed case and release an internal pressure of the sealed case,
- wherein each of the releasing portions is formed by a lid member, wherein the lid member forms a side wall of the sealed case, and wherein the lid member is attached to an opening edge of the sealed case by a joint portion,
- wherein the releasing portions include a first releasing portion and a second releasing portion, which is located below the first releasing portion in a vertical direction,
- wherein the first releasing portion and the second releasing portion are provided at respective ends of the lid member in the vertical direction, and wherein when the first releasing portion and the second releasing portion are opened the first releasing portion and the second releasing portion are not in contact with the opening edge.
4 more elements
Dependencies are inferred from the claim text.