| 摘要 |
PROBLEM TO BE SOLVED: To obtain a battery pack 1 of airtight type in which a cell 3 is accommodated basically in an airtight internal space 5, and which can efficiently radiate heat generated from the cell 3 into the open air.SOLUTION: A battery pack 1 having a cell 3 composed of a plurality of unit cells accommodated in an internal space 5 of a case 4 comprises the cell 3, a heat radiation bus bar 11, the case 4, and an internal blower 9. The plurality of cells 3 are juxtaposed facing each other. The heat radiation bus bar 11 radiates heat from the cells 3 to the internal space 5. The case 4 has a box-type shape enclosing the cells 3 air-tight and having at least six faces, irregularities being formed on the surface. The internal blower 9 is disposed inside the case 4. The air in the case 4 is circulated by the internal blower 9 so as to pass the periphery of the case 4 including the inner faces of the case 4 and the heat radiation bus bar 11, whereby heat is radiated from the inner walls of the case 4 to the outside. |
