Battery module
AssigneeVehicle Energy Japan Inc.
InventorsOsamu Kubota, Kazunori Ojima, Yoshitaka Watahiki, Takashi Suzuki
Life of this patent
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Abstract
To prevent an increase in the electrical resistance between a terminal for external connection and a cell terminal of a battery cell of a battery cell group. A battery module 100 includes a battery cell group 10, a pair of end plates 20, a bus bar 30, and a fastening member 40. The end plate 20 includes a recess 21 adapted to partially house the fastening member 40 in a mutually movable manner in one direction (X-direction) corresponding to the stacked direction of the plurality of battery cells 1. The battery module 100 also has a gap S between an inner side wall 21a of the recess 21 and the fastening member 40 in the one direction (X-direction).
Claims12
A battery module comprising:
- a battery cell group including a plurality of battery cells stacked in one direction and coupled together;
- a pair of end plates sandwiching the battery cell group from opposite sides of the battery cell group in the one direction;
- a bus bar for coupling the battery cell group to a terminal for external connection;
- and
- a fastening member for fastening the terminal to the bus bar, wherein:
- an end plate of the pair of end plates has a recess adapted to partially house the fastening member in a mutually movable manner in the one direction, and
- a gap is provided between an inner side wall of the recess and the fastening member along the one direction.
Dependencies are inferred from the claim text.