Battery pack
AssigneeVehicle Energy Japan Inc.
InventorsHitoshi Nishimori, Takayuki Nakajima
Life of this patent
Estimating the term…
Abstract
Provided is a battery pack capable of improving load resistance of a reinforcing part and protecting battery cells inside a case. The battery pack 100 includes a reinforcing part 30 that is in contact with a bottom wall 10e of the case 10. The reinforcing part 30 extends in one direction D1 along the bottom wall 10e, and has dimensions d1, d2 in directions orthogonal to the one direction D1 that are larger than thickness t of side walls 10a, 10b, 10c, 10d of the case 10 and of the bottom wall 10e. The reinforcing part 30 has a pair of end fixed parts 31 that are fixed to both ends of the battery module 20 in the one direction D1, and an intermediate fixed part 32 between the pair of end fixed parts 31 and fixed to the battery module 20 or the case 10.
Claims20
A battery pack comprising:
- a battery module including a plurality of secondary cells;
- a case that stores the battery module, the case having a bottom wall and side walls;
- and
- a reinforcing part that is in contact with the bottom wall of the case, the reinforcing part extending in one direction along the bottom wall, and having a dimension in a direction orthogonal to the one direction that is larger than a thickness of the side walls and of the bottom wall of the case,
- wherein the reinforcing part includes:
- a pair of end fixed parts that are fixed to both ends of the battery module in the one direction,
- an intermediate fixed part located between the pair of end fixed parts and fixed to the battery module or the case, and
- a cutout formed in the intermediate fixed part on a first surface of the reinforcing part that is opposite a second surface of the reinforcing part that is in contact with the bottom wall, wherein the cutout accommodates a terminal portion of the battery module.
A battery pack comprising:
- a plurality of secondary cells, where each of the plurality of secondary cells has a flattened rectangular shape having a thickness and has wide side surfaces facing in a direction of the thickness of the secondary cells and narrow side surfaces along a thickness direction
- a battery module including the plurality of secondary cells, wherein the battery module has a pair of side blocks at both ends in one direction, and a center block between the pair of the side blocks, and includes the plurality of secondary cells between the center block and each of the side blocks;
- a case that stores the battery module, the case having a bottom wall and side walls, wherein the secondary cells are stacked in the thickness direction so that the wide side surfaces face the bottom wall, and the narrow side surfaces face a reinforcing part;
- and
- the reinforcing part that is in contact with the bottom wall of the case, the reinforcing part extending in one direction along the bottom wall, and having a dimension in a direction orthogonal to the one direction that is larger than a thickness of the side walls and of the bottom wall of the case,
- wherein the reinforcing part includes:
- a pair of end fixed parts that are fixed to both ends of the battery module in the one direction, wherein each of the pair of fixed parts is fixed to a corresponding side block, and
- an intermediate fixed part located between the pair of the end fixed parts and fixed to the center block or the case.
Dependencies are inferred from the claim text.