Spacer and battery pack
AssigneeEnvision AESC Japan Ltd.
InventorsMasahiro Nakamoto, Yasuhiro Yanagihara
Life of this patent
Estimating the term…
Abstract
A spacer is used with a unit cell that has a cell body including a power-generating element and formed to have a flat shape and an electrode tab extending out from the cell body. The first spacer has a protrusion, a recess, and an opening. The protrusion has a protruding shape and is inserted into a hole or notch provided on the electrode tab to guide the electrode tab. The first recess has a recessed shape, and is separated from the electrode tab around the base of the protrusion. The first opening allows a portion of the first recess to communicate with a side surface of the spacer.
Claims4
A battery pack comprising:
- a unit cell that has a cell body including a power-generating element and being formed to have a flat shape, and an electrode tab extending out from the cell body, the electrode tab having a distal end portion that is bent, the electrode tab further having a hole or a notch that is formed on the electrode tab, the hole or notch being formed in an elongated shape and extending from a proximal end portion of the cell body to the distal end portion of the electrode tab;
- a spacer that includes
- a protrusion having a protruding shape protruding in a stacking direction of the unit cell that is inserted into the hole or notch of the electrode tab to guide the electrode tab,
- a recess having a recessed shape so as to be separated from the electrode tab around the base of the protrusion,
- an abutting portion that contacts the electrode tab when the protrusion is inserted into the hole or notch;
- and
- an opening that allows a portion of the recess to communicate with the hole or notch when the protrusion is inserted into the hole or notch;
- and
- a bus bar that electrically interconnects the electrode tab to an electrode of a different unit cell.
Dependencies are inferred from the claim text.