Pouch-type secondary battery and secondary battery module comprising the same

• US 9,929,450 B2
• Filed: 10/15/2014
• Issued: 03/27/2018
• Est. Priority Date: 10/15/2013
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Nam, Jin-Moo, Seong, Jun-Yeob, Kang, Dal-Mo, Jung, Seung-Hun
• Primary Examiner(s): Jelsma, Jonathan G
• Application Number:
  US14/780,301
• Publication Number:
  US 20160056515A1
• Time in Patent Office: 1,259 Days
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/623 Portable devices, e.g. mobile telephones, cameras or pacemakers
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6551 Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/178 for pouch or flexible bag cells
• CPC Class Codes: H01M 50/55 on the same side of the cell
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• 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 secondary battery module according to the present disclosure includes a pouch-type secondary battery including an electrode assembly in which a cathode plate and an anode plate are stacked with a separator interposed between the cathode plate and the anode plate, an electrode tab extending from the electrode assembly, and a pouch case to receive the electrode assembly, including an upper pouch and a lower pouch, and having a coupling hole formed at an outer peripheral area passing through in a vertical direction, and a cooling pin coupled with the pouch-type secondary battery by the coupling hole. According to the present disclosure, there is an effect of fixing a plurality of pouch-type secondary batteries to the cooling pin without a cartridge for holding the pouch-type secondary batteries.

Claims

1. A secondary battery module comprising:

a pouch-type secondary battery comprising;

an electrode assembly in which a cathode plate and an anode plate are stacked with a separator interposed between the cathode plate and the anode plate;

an electrode tab extending from the electrode assembly; and

a pouch case to receive the electrode assembly, including an upper pouch and a lower pouch, and having a coupling hole formed at an outer peripheral area passing through in a vertical direction;

a heat sink;

a cooling pin extending from the heat sink and coupled with the pouch-type secondary battery by the coupling hole; and

a fastener extending through the coupling hole and the cooling pin to couple the cooling pin and the pouch-type secondary battery.

2. The secondary battery module according to claim 1, wherein the pouch case includes a sealing part where the upper pouch and the lower pouch are sealed and further includes an extension part formed outside the sealing part, and the coupling hole is formed in the extension part.

3. The secondary battery module according to claim 1, wherein the coupling hole is formed at a corner of the pouch case.

4. The secondary battery module according to claim 1, wherein the pouch case has at least two coupling holes.

5. The secondary battery module according to claim 4, wherein the two coupling holes are formed along a first edge of the pouch case, and

wherein the cooling pin extends along the first edge of the pouch case.

6. The secondary battery module according to claim 1, wherein the coupling hole has a reinforcing member therein to surround an inner side of the coupling hole.

7. The secondary battery module according to claim 6, wherein the reinforcing member is made of a material having insulating properties.

8. The secondary battery module according to claim 1, wherein a washer is interposed between the coupling hole and the cooling pin.

9. The secondary battery module according to claim 1, further comprising a housing,

wherein the cooling pin extends from a first side of the housing to a second side of the housing opposite the first side.