SECONDARY BATTERY WITH PROTECTION CIRCUIT MODULE

• US 20100178549A1
• Filed: 12/23/2009
• Published: 07/15/2010
• Est. Priority Date: 01/09/2009
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: MOOM, Daeyon
• Granted Patent: US 8,852,790 B2
• Time in Patent Office: Days
• US Class Current: 429/158
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 50/503 characterised by the shape of the interconnectors
• CPC Class Codes: H01M 50/516 by welding, soldering or brazing
• CPC Class Codes: H01M 50/522 Inorganic material
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A secondary battery including: a cell unit including at least one battery cell; a protection circuit module including a circuit board having at least one terminal hole and at least one electrode tab. The electrode tab includes an insertion plate that is inserted into the terminal hole, to electrically connect the cell unit and the circuit board. The insertion plate includes a locking wing.

Claims

1. A secondary battery comprising:

a cell unit comprising a battery cell;

a protection circuit module comprising a circuit board having a terminal hole; and

an electrode tab comprising an insertion plate that is inserted into the terminal hole, to electrically connect the cell unit and the circuit board, the insertion plate comprising a locking wing.

2. The secondary battery of claim 1, wherein the locking wing is angled from the insertion plate.

3. The secondary battery of claim 1, wherein the locking wing is formed by incising and bending a portion of the insertion plate.

4. The secondary battery of claim 2, wherein the electrode tab comprises another locking wing that is angled from the insertion plate, at an opposing direction with respect to the locking wing.

5. The secondary battery of claim 1, wherein the electrode tab is made of nickel.

6. The secondary battery of claim 1, wherein:

the electrode tab further comprises a locking plate that is bent from the insertion plate at an angle;

the locking wing is disposed on a first surface of the circuit board; and

the locking plate is disposed on an opposing second surface of the circuit board.

7. The secondary battery of claim 1, wherein the electrode tab is formed by bending a single plate member.

8. The secondary battery of claim 1, wherein the insertion plate and the circuit board are coupled to each other by soldering.

9. The secondary battery of claim 8, wherein the insertion plate has a passing hole that is filled with the solder.

10. The secondary battery of claim 9, the passing hole is formed by incising and bending a portion of the insertion plate.

11. The secondary battery of claim 1, wherein the locking wing is elastically deformed as it is inserted through the terminal hole, to prevent from deviating while being inserted into the terminal hole.

12. The secondary battery of claim 1, wherein the cell unit comprises:

a plurality of the battery cells; and

a connection plate that extends from the electrode tab and electrically connects the battery cells to each other.

13. The secondary battery of claim 12, wherein the electrode tab and the connection plate are formed by bending a single plate member.

14. The secondary battery of claim 13, wherein the connection plate comprises first and second portions that are folded to overlap each other.

15. A secondary battery comprising:

a protection circuit module having terminal holes;

battery cells;

connecting plates that extend from the battery cells toward the protection circuit module, to electrically connect the battery cells; and

electrode tabs that extend from the connecting plates, through the terminal holes, to electrically connect the connecting plates to the protection circuit module, the electrode tabs comprising locking wings that lock the electrode tabs to the protection circuit module.

16. The secondary battery of claim 15, wherein the electrode tabs comprise:

insertion plates that extend through the terminal holes, from which the locking wings are bent;

locking plates that are bent from the insertions plates; and

connection plates that are bent from the locking plates and are connected to the connecting plates,

wherein the locking plates extend along a first side of the protection circuit module, and the locking wings are disposed on an opposing second side of the protection circuit module.

17. The secondary battery of claim 16, wherein the insertions plates and the connection plates are bent orthogonally from opposing ends of the locking plates.

18. The secondary battery of claim 15, wherein the connecting plates comprise first portions and opposing second portions that are bent from the first portions and are connected to the electrode tabs.

19. The secondary battery of claim 15, wherein the electrode tabs each comprise two of the locking wings, which are bent in opposing directions.