Power storage unit and electronic device

Patent metadata

Field	Value
Publication number	US-2016118640-A1
Application number	US-201514921179-A
Country	US
Kind code	A1
Filing date	Oct 23, 2015
Priority date	Oct 24, 2014
Publication date	Apr 28, 2016
Grant date	—

Abstract

A power storage unit suitable for a wearable device is provided. A novel power storage unit or power storage device is provided. The power storage unit includes a positive electrode and a negative electrode inside an external body. The positive electrode includes a positive electrode tab portion protruding from the positive electrode in one direction. The negative electrode includes a negative electrode tab portion protruding from the negative electrode in one direction. The power storage unit includes a first lead electrode electrically connected to the positive electrode tab portion and a second lead electrode electrically connected to the negative electrode tab portion. The first lead electrode includes a first fold portion. The second lead electrode includes a second fold portion.

First claim

What is claimed is:

1 . A power storage unit comprising:
an external body; a positive electrode inside the external body, the positive electrode including a positive electrode tab portion protruding from the positive electrode in one direction; a negative electrode inside the external body, the negative electrode including a negative electrode tab portion protruding from the negative electrode in the one direction; a first lead electrode electrically connected to the positive electrode tab portion, the first lead electrode having a first fold portion; and a second lead electrode electrically connected to the negative electrode tab portion, the second lead electrode having a second fold portion.

2 . The power storage unit according to claim 1 , wherein an angle formed by a fold line of the first fold portion and a straight line parallel to the one direction is greater than or equal to 45° and less than or equal to 90°.

3 . The power storage unit according to claim 1 , wherein an angle formed by a fold line of the second fold portion and a straight line parallel to the one direction of the negative electrode tab portion is greater than or equal to 45° and less than or equal to 90°.

4 . The power storage unit according to claim 1 , wherein a thickness of part of the external body is greater than or equal to 20 μm and less than or equal to 150 μm.

5 . The power storage unit according to claim 1 , wherein the external body includes a region having a plurality of projections or a plurality of depressions.

6 . The power storage unit according to claim 1 , wherein a plurality of positive electrodes and a plurality of negative electrodes are provided inside the external body.

7 . An electronic device comprising:
the power storage unit according to claim 1 ; and at least one of a display portion, an operation button, a speaker, and a microphone.

8 . A power storage unit comprising:
an external body; a positive electrode inside the external body, the positive electrode including a positive electrode tab portion protruding from the positive electrode in one direction; a negative electrode inside the external body, the negative electrode including a negative electrode tab portion protruding from the negative electrode in the one direction; a first lead electrode electrically connected to the positive electrode tab portion, the first lead electrode having a first bent portion; and a second lead electrode electrically connected to the negative electrode tab portion, the second lead electrode having a second bent portion.

9 . The power storage unit according to claim 8 , wherein a thickness of part of the external body is greater than or equal to 20 μm and less than or equal to 150 μm.

10 . The power storage unit according to claim 8 , wherein the external body includes a region having a plurality of projections or a plurality of depressions.

11 . The power storage unit according to claim 8 , wherein a plurality of positive electrodes and a plurality of negative electrodes are provided inside the external body.

12 . An electronic device comprising:
the power storage unit according to claim 8 ; and at least one of a display portion, an operation button, a speaker, and a microphone.

Assignees

• Semiconductor Energy Lab

Inventors

• Miyake Hiroyuki

Classifications

• G06F1/1613 Primary

  for portable computers (cooling arrangements therefor G06F1/203; constructional details or arrangements for pocket calculators, electronic agendas or books G06F15/0216; constructional details of portable telephone sets: with several bodies H04M1/0202) · CPC title

• H01M50/178

  for pouch or flexible bag cells · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title

• H01M50/55

  on the same side of the cell · CPC title

• H01M50/536

  characterised by the method of fixing the leads to the electrodes, e.g. by welding · CPC title