Patent ID: 8986865
Filing Date: 2015-03-24
Classification: H01M,Y02E

Abstract:
1. A battery unit, comprising: a battery cell having electrode terminals, said battery cell has two surfaces and four edges, anyone of said four edges are narrower than either of the two surfaces; and a case for housing the battery cell, wherein the case comprises: a first-layer outlet guide portion for guiding air to be discharged toward the electrode terminals; and a second-layer outlet guide portion that is disposed above the first-layer outlet guide portion and guides air to be discharged, at least one of the first-layer outlet guide portion and the second-layer outlet guide portion includes the plurality of guide pins extending in a direction in which air is discharged, the first-layer outlet guide portion and the second-layer outlet guide portion are separated from each other by a separation wall dividing discharged air between the first-layer outlet guide portion and the second-layer outlet guide portion, wherein the separation wall is inclined toward the electrode terminals, wherein the inlet guide portion further comprises: an inclination surface that is shaped so that a lower and an upper surface of the inlet guide portions of a neighboring battery cell form a funnel-shaped space having an increasing cross-section as a distance from the battery cell increases; and a plurality of guide pins extending at a 90 degree from the inclination surface and encompassing an entire width of the inclination surface with a tapered end at a point where a cross-sectional area is greatest.