Patent ID: 7998611

Claim:
A battery module comprising: a plurality of cells; and a holder frame consisting of a plurality of frames having holding parts that fit with part of outer surfaces of the cells, wherein both axial ends of the cells are held by the holding parts of the respective frames of the holder frame, and each two adjacent cells are electrically interconnected, wherein each of the frames of the holder frames includes, between each two adjacent holding parts along a direction of lateral sides, screw holes in a shape that extends in a direction orthogonal to the lateral sides; when the frames are arranged opposite each other, the screw holes communicate with each other, and fixing screws are inserted and tightened into the screw holes so that the frames are detachably coupled together; each two adjacent cylindrical batteries are electrically interconnected in a detachable manner through inter-battery connection plates, which include welded parts that are welded respectively to a positive or negative terminal of the batteries, and connecting parts that extend from the welded parts in directions in which they approach each other, and the electrical connection is achieved by thread engagement between respective connecting parts of the inter-battery connection plates; and wherein on the outer side of each of the plural frames in the holder frame, the holding parts except for the centers are formed in a recess dented inwards by a predetermined step from the outer surface; each two adjacent holding parts are connected together by linear guide supports extending parallel to the direction of arrangement of the holding parts in a recessed position dented inwards by a step, which is smaller than the predetermined step, from the outer surface; the two holding parts at one end of the inner frame are connected together by a linear guide support in a recessed position dented inwards from the outer surface; and the connecting arts of the inter-batter connection elates fit in between the two guide supports opposite each other.