Protection circuit board for secondary battery and secondary battery using the protection circuit board

• US 20080226980A1
• Filed: 02/29/2008
• Published: 09/18/2008
• Est. Priority Date: 03/15/2007
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Kim, Woochoul
• Granted Patent: US 8,440,346 B2
• Time in Patent Office: Days
• US Class Current: 429/164
• CPC Class Codes: H01G 9/0003 Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films H01G9/12 takes precedence
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 2200/106 PTC
• CPC Class Codes: H01M 50/147 Lids or covers
• CPC Class Codes: H05K 1/0259 Electrostatic discharge [ESD] protection
• CPC Class Codes: H05K 1/181 associated with surface mounted components
• 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
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A protection circuit board for a secondary battery includes an insulation substrate, a protection circuit part including an electrode tap connection terminal and a charge/discharge terminal, arranged on the insulation substrate, and a printed circuit board including a passive element and a positive element, connected to a printed circuit board pattern. A static electricity absorbing part is arranged at a periphery of the printed circuit board pattern.

Claims

1. A protection circuit board for a secondary battery comprising:

an insulation substrate;

a protection circuit part including an electrode tap connection terminal and a charge/discharge terminal, arranged on the insulation substrate, and a printed circuit board including a passive element and a positive element, connected to a printed circuit board pattern; and

a static electricity absorbing part arranged at a periphery of the printed circuit board pattern.

2. The protection circuit board as claimed in claim 1, wherein the static electricity absorbing part is connected to the ground pattern of a printed circuit board pattern.

3. The protection circuit board as claimed in claim 1, further comprising a test terminal arranged on the printed circuit board pattern.

4. The protection circuit board as claimed in claim 1, further comprising a conductor connected to the static electricity absorbing part.

5. The protection circuit board as claimed in claim 4, wherein the conductor comprises one material selected from Cu, Al, Ni and stainless steel.

6. The protection circuit board as claimed in claim 4, wherein the conductor comprises a conductive paste.

7. A secondary battery comprising:

an electrode assembly, including an anode plate connected to an anode tap, a cathode plate connected to a cathode tap and a separator interposed between the anode plate and the cathode plate;

a can, including one open end part to accept the electrode assembly;

a cap assembly including an electrode terminal electrically connected to the cathode tap and a cap plate electrically connected to the cathode tap;

a lid electrode part electrically connected to the electrode terminal and the cap plate;

a protection circuit board including an insulation substrate, a printed circuit board pattern arranged on the insulation substrate and electrically connected to the lid electrode part;

a protection circuit part electrically connected to the printed circuit board pattern;

a charge/discharge terminal arranged on the insulation substrate and electrically connected to the printed circuit board pattern; and

a protection circuit board including a test terminal arranged on the insulation substrate, and electrically connected to the printed circuit board pattern including an electroless plated layer arranged thereon; and

a resin molding part including molding the protection circuit board with a melting resin to expose a surface of the charge/discharge terminal.

8. The a secondary battery as claimed in claim 7, further comprising a test terminal arranged on the printed circuit board pattern.

9. The secondary battery as claimed in claim 8, wherein the resin molding part exposes a terminal surface of the test terminal.

10. The secondary battery as claimed in claim 7, further comprising an aperture arranged within the resin molding part, the aperture passing from the external surface to the static electricity absorbing part.

11. The secondary battery as claimed in claim 7, wherein the static electricity absorbing part is connected to a ground pattern of the printed circuit board pattern.

12. The secondary battery as claimed in claim 7, further comprising a conductor connected to the static electricity absorbing part.

13. The secondary battery as claimed in claim 12, wherein the conductor comprises one material selected from Cu, Al, Ni and stainless steel.

14. The secondary battery as claimed in claim 12, wherein the conductor comprises a conductive paste.