PROTECTION CIRCUIT MODULE FOR RECHARGEABLE BATTERY AND RECHARGEABLE BATTERY PACK INCLUDING THE SAME

• US 20090123821A1
• Filed: 11/10/2008
• Published: 05/14/2009
• Est. Priority Date: 11/12/2007
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: KIM, Woochull
• Granted Patent: US 8,530,076 B2
• Time in Patent Office: Days
• US Class Current: 429/124
• 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 2200/00 Safety devices for primary or secondary batteries
• CPC Class Codes: H01M 2200/103 Fuse
• CPC Class Codes: H01M 2200/106 PTC
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/147 Lids or covers
• CPC Class Codes: H01M 50/581 in response to temperature
• CPC Class Codes: H05K 1/182 associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
• CPC Class Codes: H05K 1/183 Components mounted in and supported by recessed areas of the printed circuit board
• CPC Class Codes: H05K 2201/10689 Leaded Integrated Circuit [IC] package, e.g. dual-in-line [DIL]
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A protection circuit module and a rechargeable battery pack including the PCM. The battery pack includes: an electrode assembly, which has a positive electrode plate, a separator, and a negative electrode plate; a case to house the electrode assembly and an electrolyte; and the protection circuit module. The protection circuit module includes: a protection circuit board having an inner surface that faces the electrode assembly and an opposing outer surface; and a protection circuit part mounted in a hole formed in the inner surface of the protection circuit board, such that the protection circuit board is flush with the inner surface of the protection circuit board.

Claims

1. A protection circuit module for a rechargeable battery, comprising:

a protection circuit board having an inner surface that faces the rechargeable battery and an opposing outer surface; and

a protection circuit part mounted in a hole formed in the inner surface of the protection circuit board.

2. The protection circuit module of claim 1, wherein the hole does not extend to the outer surface of the protection circuit board.

3. The protection circuit module of claim 1, wherein the hole is a through-hole that extends between the inner and outer surfaces of the protection circuit board.

4. The protection circuit module of claim 1, further comprising:

a circuit pattern disposed on the inner surface of the protection circuit board; and

a lead frame to connect the protection circuit part to the circuit pattern,

wherein the protection circuit part is inserted into the hole upside down.

16. The protection circuit module of claim 1, wherein the protection circuit board comprises a plurality of the holes and a plurality of the protection circuit parts, which are disposed in respective ones of the holes.

17. The protection circuit module of claim 16, wherein:

at least one of the holes is a through-hole that extends between the inner and outer surfaces; and

at least one of the holes does not extend to the outer surface.

18. The protection circuit module of claim 1, wherein the protection circuit part is mounted so as to be flush with the inner surface of the protection circuit board.

5. A rechargeable battery pack comprising:

an electrode assembly comprising a positive electrode plate, a separator, and a negative electrode plate;

a case to house the electrode assembly and an electrolyte; and

a protection circuit module electrically connected to the electrode assembly, comprising,

a protection circuit board having an inner surface that faces the electrode assembly and an opposing outer surface, and

a protection circuit part mounted in a hole formed in the inner surface of the protection circuit board, such that the protection circuit board is flush with the inner surface of the protection circuit board.

6. The rechargeable battery of claim 5, wherein the hole does not extend to the outer surface of the protection circuit board.

7. The rechargeable battery of claim 5, wherein the hole is a through-hole that extends between the inner and outer surfaces of the protection circuit board.

8. The rechargeable battery of claim 5, wherein the protection circuit module further comprises:

a circuit pattern disposed on the inner surface of the protection circuit board; and

a lead frame to connect the protection circuit part to the circuit pattern.

9. The rechargeable battery of claim 8, wherein the protection circuit part is inserted into the hole upside down.

10. The rechargeable battery of claim 8, wherein the lead frame of the protection circuit part is soldered to the circuit pattern.

11. The rechargeable battery of claim 5, wherein the case is a can-type case.

12. The rechargeable battery of claim 5, further comprising:

a cap assembly to seal an opening of the case; and

a hot-melt resin to attach the cap assembly to the protection circuit module.

13. The rechargeable battery of claim 5, wherein the case is a pouch-type case.

14. The rechargeable battery of claim 5, wherein the protection circuit board comprises a plurality of the holes and a plurality of the protection circuit parts, which are disposed in respective ones of the holes.

15. The rechargeable battery of claim 14, wherein:

at least one of the holes is a through-hole that extends between the inner and outer surfaces; and

at least one of the holes does not extend to the outer surface.

19. The rechargeable battery of claim 5, wherein the protection circuit part is mounted so as to be flush with the inner surface of the protection circuit board.