Battery Pack Having Protection from Static Electricity

• US 20110143172A1
• Filed: 12/15/2010
• Published: 06/16/2011
• Est. Priority Date: 12/16/2009
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Park, Chilsung
• Granted Patent: US 8,802,248 B2
• Time in Patent Office: Days
• US Class Current: 429/7
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 2200/00 Safety devices for primary or secondary batteries
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/24 adapted for protecting batteries from their environment, e.g. from corrosion thermal insulation H01M10/658
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

In a battery pack, an electrostatic protective part is disposed on a side surface of a protective circuit module so as to protect the protective circuit module from static electricity introduced from the outside, thus improving the reliability of a battery. The battery pack includes a battery cell, a protective circuit module electrically connected to the battery cell and including an electrostatic protective part on a side surface thereof, and a case accommodating the battery cell and the protective circuit module. The electrostatic protective part is formed by applying solder on a conductive foil.

Claims

1. A battery pack, comprising:

a battery cell;

a protective circuit module electrically connected to the battery cell and including an electrostatic protective part disposed on a side surface of the protective circuit module; and

a case accommodating the battery cell and the protective circuit module;

wherein the electrostatic protective part surrounds the side surface of the protective circuit module.

2. The battery pack as claimed in claim 1, wherein the protective circuit module comprises a printed circuit board;

wherein the printed circuit board includes a first flat surface, a second flat surface disposed opposite to the first flat surface, and a third surface connecting the first and second flat surfaces; and

wherein the electrostatic protective part is disposed across the first flat surface, the second flat surface and the third surface of the printed circuit board.

3. The battery pack as claimed in claim 1, wherein the electrostatic protective part is electrically connected to a ground of the protective circuit module.

4. The battery pack as claimed in claim 1, wherein the electrostatic protective part is connected to one of a positive terminal and a negative terminal of the battery cell.

5. The battery pack as claimed in claim 1, wherein the electrostatic protective part is disposed near a semiconductor device mounted on the protective circuit module.

6. The battery pack as claimed in claim 1, wherein the electrostatic protective part is disposed near a pattern connected to a semiconductor device mounted on the protective circuit module.

7. The battery pack as claimed in claim 1, wherein the case comprises a top case and a bottom case coupled to the top case, and wherein the electrostatic protective part is disposed at a portion facing a coupling portion between the top case and the bottom case.

8. The battery pack as claimed in claim 1, wherein the electrostatic protective part is formed by applying a solder on a conductive foil.

9. The battery pack as claimed in claim 8, wherein the conductive foil is a copper foil.

10. The battery pack as claimed in claim 8, wherein the conductive foil is formed through a plating process.

11. The battery pack as claimed in claim 8, wherein the solder is formed on a surface of the conductive foil through a plating process.

12. The battery pack as claimed in claim 8, wherein the solder is formed of any one of Sn₃₇Pb, Sn₉₅Pb, SnAg, SnAu, SnCu, SnZn, SnZnBi, SnAgCu, and SnAgBi.

13. A battery pack, comprising:

a battery cell;

a protective circuit module electrically connected to the battery cell and including an electrostatic protective part disposed on a side surface of the protective circuit module; and

a case accommodating the battery cell and the protective circuit module;

wherein the protective circuit module comprises a printed circuit board;

wherein the printed circuit board includes a first flat surface, a second flat surface disposed opposite to the first flat surface, and a third surface connecting the first and second flat surfaces; and

wherein the electrostatic protective part is disposed across the first flat surface, the second flat surface and the third surface of the printed circuit board.

14. A battery pack, comprising:

a battery cell;

a protective circuit module electrically connected to the battery cell and including an electrostatic protective part disposed on a side surface of the protective circuit module; and

a case accommodating the battery cell and the protective circuit module;

wherein the case comprises a top case and a bottom case coupled to the top case, and wherein the electrostatic protective part is disposed at a portion facing a coupling portion between the top case and the bottom case.