Battery pack

Patent metadata

Field	Value
Publication number	US-2016240825-A1
Application number	US-201614994174-A
Country	US
Kind code	A1
Filing date	Jan 13, 2016
Priority date	Feb 16, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A battery pack includes a battery cell including an electrode assembly including a first electrode plate, a second electrode plate, and a separator that are wrapped, a case that receives the electrode assembly, a cap assembly including a cap up located on an upper part of the case and coupled to the case to be electrically connected to the electrode assembly, a first connection member electrically connected to the cap up of the battery cell, a joining portion on one area of an outer surface of the case, and a second connection member electrically connected to the joining portion at the one area of the outer surface of the case.

First claim

What is claimed is:

1 . A battery pack, comprising:
a battery cell including an electrode assembly including a first electrode plate, a second electrode plate, and a separator that are wrapped, a case that receives the electrode assembly, a cap assembly including a cap up located on an upper part of the case and coupled to the case to be electrically connected to the electrode assembly; a first connection member electrically connected to the cap up of the battery cell; a joining portion on one area of an outer surface of the case; and a second connection member electrically connected to the joining portion at the one area of the outer surface of the case.

2 . The battery pack as claimed in claim 1 , wherein the joining portion is in a shape of a screw.

3 . The battery pack as claimed in claim 2 , wherein the second connection member includes a first coupling portion in a shape of a nut that is coupleable to the joining portion and a first connection portion extending perpendicularly to a length direction of the case, the first connection portion including separate portions extending in opposite directions from opposite sides of a lower part of the first coupling portion.

4 . The battery pack as claimed in claim 1 , wherein the case and the second connection member may be formed as a single body.

5 . The battery pack as claimed in claim 4 , wherein the case and the second connection member may be an integral structure formed by insert injection.

6 . The battery pack as claimed in claim 1 , wherein the joining portion includes a projecting portion, the projecting portion extending from the joining portion.

7 . The battery pack as claimed in claim 6 , wherein the second connection member includes a groove, the groove being in the second connection member at a location corresponding to the projecting portion of the joining portion.

8 . The battery pack as claimed in claim 1 , wherein the second connection member is joined with the joining portion by tight fitting.

9 . The battery pack as claimed in claim 1 , wherein the first connection member has a shape of a leaf spring and is electrically connected to the cap up.

10 . The battery pack as claimed in claim 1 , wherein:
the first connection member includes an insertion hole in one area of the first connection member, the cap up includes a fixed groove, and the first connection member and the cap up are electrically connected by a fixing member inserted in the insertion hole and the fixed groove.

11 . The battery pack as claimed in claim 10 , wherein the fixing member includes a screw.

12 . The battery pack as claimed in claim 1 , wherein:
the first connection member includes a second coupling portion in a shape of a nut, and a second connection portion extends perpendicularly to a length direction of the case, the second connection portion including separate portions extending in opposite directions from opposite sides of the second coupling portion.

13 . The battery pack as claimed in claim 12 , wherein:
the cap up includes a protruding portion in a shape of a screw at a location that corresponds to the second coupling portion, and the second coupling portion is joined with the protruding portion.

14 . The battery pack as claimed in claim 1 , further comprising an insulating member along a periphery of an upper surface the cap up, the insulating member extending upwardly from the cap up to a predetermined height.

15 . The battery pack as claimed in claim 1 , wherein the cap up is positive and the case is negative in polarity.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Ro Huntae
• Lee Daepyo

Classifications

• H01M50/107 Primary

  having curved cross-section, e.g. round or elliptic (H01M50/103, H01M50/109, H01M50/11 take precedence) · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/519

  comprising printed circuit boards [PCB] · CPC title

• H01M50/179

  for cells having curved cross-section, e.g. round or elliptic (H01M50/176, H01M50/181 take precedence) · CPC title