| CPC H01M 50/183 (2021.01) [H01M 50/105 (2021.01); H01M 50/547 (2021.01)] | 19 Claims |
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1. A battery module, comprising:
a plurality of pouch-type battery cells, each pouch-type battery cell including an electrode assembly, a pouch enclosing the electrode assembly, and electrode leads electrically connected to the electrode assembly, the pouch including at least one electrode accommodation portion accommodating the electrode assembly therein and a sealing portion sealing at least a portion of a periphery of the electrode accommodation portion; and
a bus bar assembly having at least one bus bar electrically connected to the electrode leads,
wherein the electrode accommodation portion includes a body portion having a width greater than a height thereof, and an extension portion extending in a height direction from the body portion and having a width less than the width of the body portion,
wherein an upper portion of the body portion comprises a first region corresponding to a central portion of the body portion taken in a width direction of the electrode accommodation portion, a second region and a third region respectively positioned on both sides of the first region taken in the width direction,
wherein the extension portion is configured to protrude from the first region of the body portion,
wherein the electrode leads comprise a positive electrode lead and a negative electrode lead,
wherein the positive electrode lead is configured to extend in the height direction out from the second region of the body portion, and the negative electrode lead is configured to extend in the height direction out from the third region of the body portion,
wherein the bus bar comprises a first bus bar connected to the electrode leads disposed at the second region and a second bus bar connected to the electrode leads disposed at the third region,
wherein the first bus bar and the second bus bar are coupled to the electrode leads in a vertical direction of the pouch-type battery cell,
wherein the sealing portion includes a first sealing portion formed on both sides of the body portion of the electrode accommodation portion taken in the width direction, and a second sealing portion formed above the electrode accommodation portion, and
wherein an outer edge of the second sealing portion includes a first outer edge line and a second outer edge line formed on both side portions of the extension portion in the width direction, respectively, a third outer edge line formed on an upper portion of the extension portion, a fourth outer edge line formed on an upper portion above the second region, and a fifth outer edge line formed on an upper portion above the third region.
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