Vehicle Energy Japan Inc.

Takayuki Nakajima

Hitoshi Nishimori

Masayuki Nakamoto

Hanzhi Yang

Provided is a battery pack capable of improving load resistance of a reinforcing part and protecting battery cells inside a case. The battery packincludes a reinforcing partthat is in contact with a bottom wallof the case. The reinforcing partextends in one direction Dalong the bottom wall, and has dimensions d, din directions orthogonal to the one direction Dthat are larger than thickness t of side wallsof the caseand of the bottom wall. The reinforcing parthas a pair of end fixed partsthat are fixed to both ends of the battery modulein the one direction D, and an intermediate fixed partbetween the pair of end fixed partsand fixed to the battery moduleor the case

Battery pack

A battery module including a plurality of battery cells that prevents the movement of the battery cells due to impact and has excellent cooling performance of the battery cells includes a battery cell group including a laminate of a plurality of flattened rectangular battery cells stacked in a thickness direction of the battery cells, and a housing storing the battery cell group. The battery cell group includes a plurality of cell holders configured to hold the individual battery cells from both sides in the thickness direction, and a plurality of side plates disposed at both ends of the plurality of battery cells in a width direction via the plurality of cell holders. Each of the cell holders has a restriction portion configured to restrict movement of the corresponding battery cell in a direction intersecting the thickness direction, and fixing portions that engage with the side plates.

Battery module

A battery pack provided with a plurality of battery cells, the battery pack making it possible to achieve higher safety than before during handling work. The battery pack is provided with a battery group in which the plurality of battery cells are stacked, and a housing in which the battery group is accommodated. The housing, with respect to a first direction and a second direction perpendicular to a height direction of the housing and to each other, has a dimension in the first direction which is made smaller than a dimension in the second direction. The battery group is eccentrically located on one side in the first direction in the housing.

Growing community of inventors

Hitachinaka, Japan

Takayuki Nakajima