Rechargeable battery
AssigneeSamsung SDI Co., Ltd.
InventorsJeongdeok Byun, Kyungho Park, Seok Koh, Eunok Kwak, Kyungwon Seo
Life of this patent
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Abstract
The present invention relates to a rechargeable battery, particularly a rechargeable battery having a bare cell, a protective circuit board, a lead plate, and a flat plate attached to a cap plate of the bare cell for connecting the lead plate to the cap plate. According to the invention, the lead plate is not directly combined with the cap plate, in which the cap plate is made of material differently from the lead plate, and the lead plate and cap plate are respectively welded to the metal layer made of the same material by means of the flat plate formed of metal, thereby allowing them to be easily combined with each other and the adhesive force to be enhanced.
Claims19
A rechargeable battery comprising:
- a bare cell for producing electricity, the bare cell comprising a first tab and a second tab, voltage of the battery being determined between the first and second tabs, the bare cell including a cap plate that is coupled to the first tab, and an electrode terminal that is coupled to the second tab, the cap plate including an electrolytic solution injection hole sealed by a cap;
- a protective circuit board;
- a first lead plate electrically coupled to each of the bare cell and the protective circuit board;
- and
- a flat plate formed on the cap plate of the bare cell, the flat plate comprising at least two metal layers, the flat plate coupled to the first lead plate, the flat plate being positioned between the electrode terminal and the cap, and an entire surface of the flat plate being in contact with the cap plate, the flat plate not covering the cap.
A rechargeable battery comprising:
- a bare cell for producing electricity, the bare cell comprising a first tab and a second tab, voltage of the battery being determined between the first and second tabs, the bare cell including a cap plate that is coupled to the first tab, and an electrode terminal that is coupled to the second tab, the cap plate including an electrolytic solution injection hole sealed by a cap;
- a protective circuit board;
- a first lead plate electrically coupled to each of the bare cell and the protective circuit board;
- and
- a flat plate formed on the cap plate of the bare cell, the flat plate including an upper metal layer coupled to the first lead plate and a lower metal layer coupled to the cap plate, the upper metal layer and the lower metal layer being made of different materials, the flat plate being positioned between the electrode terminal and the cap, and an entire surface of the flat plate being in contact with the cap plate, the flat plate not covering the cap.
Dependencies are inferred from the claim text.