Patent ID: 9224996
Filing Date: 2015-12-29
Classification: H01M,Y02E,Y02P

Abstract:
1. A battery pack, comprising: a plurality of unit cells; a case having spaces that are sized for accommodating the plurality of unit cells and openings connected thereto and alignment openings; a first insulation structure covering a first external surface of the case; and a first connection structure positioned between the first external surface and the first insulation structure to connect electrode terminals of the plurality of unit cells to each other, wherein a plurality of first guide pins project from the first external surface of the case and wherein the plurality of guide pins extend into the alignment openings in the case and are flanged to extend over the spaces sized for accommodating the plurality of unit cells to inhibit the units cells from being separated from the case, and the first connection structure has a plurality of first insertion holes into which the first guide pins are respectively inserted and the first insulation structure has a plurality of first coupling holes into which the first guide pins are respectively inserted, so that the first guide pins are inserted into the alignment openings of the case, the first insertion holes of the first connection structure and the first coupling holes of the first insulation structure simultaneously, wherein the case comprises a plurality of support columns supporting the plurality of unit cells and a plurality of passages formed in support columns, wherein the first connection structure has at least a plurality of first air vents corresponding to the passages, wherein the first insulation structure has at least a plurality of first opening holes distinct from the plurality of first coupling holes and from the openings connected to the spaces accommodating the plurality of unit cells that are positioned between the plurality of unit cells, wherein the passages, the first air vents and the first opening holes are connected to each other, and wherein the insulation structure includes a plurality of covers that cover the plurality of first opening holes and wherein the plurality of covers include openings to permit airflow through the first opening holes.