Patent ID: 7879480
Filing Date: 2011-02-01
Classification: H01M,Y02E

Abstract:
1. A battery cartridge comprising: first and second outer frame members (a, b) for receiving first and second unit cells; and an inner frame member (c) disposed between the outer frame members (a, b), wherein the first unit cell is mounted between the first outer frame member (a) and the inner frame member (c), the second unit cell is mounted between the second outer frame member (b) and the inner frame member (c), the inner frame member (c) has a plurality of through-holes, which directly communicate with external air outside of the battery cartridge while the first and second unit cells are mounted between the outer and inner frame members, wherein the first and second unit cells are pouch-shaped cells formed in a shape of a rectangle, and the first unit cell is disposed on the first outer frame member (a) while an edge part of the first unit cell is disposed on an inside part of the first and second outer frame member (a), and the inner frame member (c) has a left frame part and a right frame part, and the plurality of through-holes are formed through the left frame part and the right frame part of the inner frame member (c) at a direction horizontal to the inner frame member (c), and the first and second outer frame members (a, b) and/or the inner frame member (c) have depressions corresponding to a thickness of electrode leads of the first and second unit cells such that at least a portion of the electrode leads of the first and second unit cells extend through the depressions and are disposed external of the first and second outer frame members (a, b) and/or the inner frame member (c) when the inner frame member (c) is coupled to the first and second outer frame members (a, b).