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US 2014/0370367 A1Published application
Structure of battery unit
AssigneeDenso Corporation
InventorsHiroaki HIGUCHI, Hidehiro KINOSHITA
Life of this patent
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Abstract
A battery unit is provided which includes a battery made of a stack of a plurality of cells each of which is equipped with electrode tabs serving as a positive terminal and a negative terminal. The electrode tabs each have a bent portion which lies between a body of the cell and a joint of the electrode tab to a bus bar. The bent portion is so geometrically shaped as to function as a stress absorber to minimize a mechanical stress which arises from oscillation of or thermal shock on the battery.
Claims8
A battery unit comprising:
- a battery which includes a stack of a plurality of laminated-type cells each of which is equipped with electrode tabs serving as a positive terminal and a negative terminal, respectively, each of the electrode tabs having a base end leading to a body of a corresponding one of the cells;
- a bus bar holder equipped with a plurality of bus bars joined to the electrode tabs of the cells;
- a storage casing in which the battery and the bus bar holder are mounted in the storage casing;
- first electrode tabs that are the electrode tabs of every adjacent two of the cells, the first electrode tabs having portions which are laid on one another and joined to the bus bars, respectively;
- and
- second electrode tabs that are the electrode tabs of the cells, each of the second electrode tabs having a portion joined to one of the bus bars without being connected to any of the electrode tabs,
- wherein each of the first and second electrode tabs includes opposed major surfaces and has a bent portion which is shaped to protrude in at least one of opposite directions traversing the opposed major surfaces and is located between the base end and a joint to the bus bar.
4 more elements
Dependencies are inferred from the claim text.