Secondary battery with protective circuit board and secondary protective element
AssigneeSamsung SDI Co., Ltd.
InventorsYoungcheol Jang, Nohyun Kwak, Sangjoo Lee
Life of this patent
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Abstract
A secondary battery with a protective circuit module including a rechargeable bare cell having a first electrode and a second electrode and a protective circuit board having a protective circuit for the rechargeable bare cell. A conductive bonding layer is located on the protective circuit board and a secondary protective element assembly is attached to the protective circuit board by the conductive bonding layer. A first lead plate electrically connects the secondary protective element assembly to the first electrode, and a second lead plate electrically connects the protective circuit board to the second electrode.
Claims8
A secondary battery with a protective circuit module comprising:
- a rechargeable bare cell having a first electrode and a second electrode;
- an electrode terminal protruding from the rechargeable bare cell;
- a protective circuit board comprising a protective circuit for the rechargeable bare cell;
- a conductive bonding layer on the protective circuit board;
- a secondary protective element assembly comprising a connecting plate bonded to the protective circuit board by the conductive bonding layer;
- a first lead plate electrically connecting the secondary protective element assembly to the first electrode;
- a second lead plate directly contacting the electrode terminal and the protective circuit board to electrically connect the protective circuit board to the second electrode;
- and
- an insulating member secured to a longitudinal side of the rechargeable bare cell, wherein the insulating member is both between a portion of the first lead plate and the rechargeable bare cell and between a portion of the second lead plate and the rechargeable bare cell,
- wherein the connecting plate comprises a first connecting portion in contact with the conductive bonding layer, a coupling portion extending from the first connecting portion, and a second connecting portion substantially parallel to the first connecting portion,
- wherein the first connecting portion comprises a plurality of through holes allowing the conductive bonding layer to penetrate therethrough and a portion of the conductive bonding layer forming a reinforcement protrusion on a side of the first connecting portion opposite the protective circuit board.
Dependencies are inferred from the claim text.