Method for manufacturing prismatic secondary battery

Patent metadata

Field	Value
Publication number	US-2017125848-A1
Application number	US-201615337516-A
Country	US
Kind code	A1
Filing date	Oct 28, 2016
Priority date	Oct 30, 2015
Publication date	May 4, 2017
Grant date	—

Abstract

A first electrode body element and a second electrode body element including a positive electrode plate and a negative electrode plate are fabricated, a first positive electrode tab group of the first electrode body element and a second positive electrode tab group of the second electrode body element are connected to a lead portion of a positive electrode collector attached to a sealing plate, a first negative electrode tab group of the first electrode body element and a second negative electrode tab group of the second electrode body element are connected to a lead portion of a negative electrode collector attached to the sealing plate, and the first electrode body element and the second electrode body element are arranged together as one such that an electrode body is formed.

First claim

1 . A method for manufacturing a prismatic secondary battery including an electrode body that includes a positive electrode plate and a negative electrode plate, an outer package that includes an opening and that houses the electrode body, a sealing plate that seals the opening, a positive electrode collector electrically connected to the positive electrode plate, and a negative electrode collector electrically connected to the negative electrode plate, the method comprising:
attaching the positive electrode collector and the negative electrode collector to the sealing plate; electrically connecting a first positive electrode tab portion and a second positive electrode tab portion to the positive electrode collector and electrically connecting a first negative electric tab portion and a second negative electrode tab portion to the negative electrode collector after disposing, in a short direction of the sealing plate,
a first electrode body element including, on a first side of the sealing plate, the positive electrode plate including the first positive electrode tab portion and the negative electrode plate including the first negative electrode tab portion, and
a second electrode body element including, on a second side of the sealing plate, the positive electrode plate including the second positive electrode tab portion and the negative electrode plate including the second negative electrode tab portion; and
arranging the first electrode body element and the second electrode body element together as one.

2 . The method for manufacturing a prismatic secondary battery according to claim 1 ,
wherein the positive electrode collector is disposed on the sealing plate with the positive electrode insulating member in between, and wherein the negative electrode collector is disposed on the sealing plate with the negative electrode insulating member in between.

3 . The method for manufacturing a prismatic secondary battery according to claim 1 ,
wherein the first electrode body element includes a plurality of the positive electrode plates and a plurality of the negative electrode plates, wherein a plurality of the first positive electrode tab portions are stacked and a plurality of the first negative electrode to portions are stacked, wherein the second electrode body element includes a plurality of the positive electrode plates and a plurality of the negative electrode plates, and wherein a plurality of the second positive electrode tab portions are stacked and a plurality of the second negative electrode tab portions are stacked.

4 . The method for manufacturing a prismatic secondary battery according to claim I,
wherein in the arranging, one side of the first electrode body element and one side of the second electrode body element are brought into contact with each other.

5 . The method for manufacturing a prismatic secondary battery according to claim 1 ,
wherein in the arranging, the first positive electrode tab portion, the second positive electrode tab portion, the first negative electrode tab portion, and the second negative electrode tab portion are bent.

6 . The method for manufacturing a prismatic secondary battery according to claim 1 ,
wherein in the connecting,
an auxiliary conductive member is connected to at least one of the first positive electrode tab portion, the second positive electrode tab portion. the first negative electrode tab portion, and the second negative electrode tab portion, and
at least one of the first positive electrode tab portion, the second positive electrode tab portion, the first negative electrode tab portion, and the second negative electrode tab portion is electrically connected to the positive electrode collector or the negative electrode collector with the auxiliary conductive member in between.

Assignees

• Sanyo Electric Co

Inventors

• Wakimoto Ryoichi
• Furukawa Hirofumi
• Kitaoka Kazuhiro
• Yamauchi Yasuhiro

Classifications

• H01M50/645

  Plugs · 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

• H01M4/583

  Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title