Apparatus for manufacturing multilayer electrode

Patent metadata

Field	Value
Publication number	US-10603887-B2
Application number	US-201715670618-A
Country	US
Kind code	B2
Filing date	Aug 7, 2017
Priority date	Aug 12, 2016
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

An apparatus includes a control device for a first suction portion, a second suction portion, and a folding portion so that each time a separator is folded, a positive electrode and a negative electrode are alternately sandwiched between folded surfaces of the separator. The control device controls the at least one of the first suction portion and the second suction portion so that doping foil is bonded to one of a current collector, the positive electrode, and the negative electrode sucked and held by the at least one of the first suction portion and the second suction portion. The control device controls the at least one of the first suction portion and the second suction portion so that the one of the current collector, the positive electrode, and the negative electrode having the lithium metal foil bonded thereto is transported and sandwiched between a predetermined pair of the folded surfaces of the separator.

First claim

What is claimed is:

1. An apparatus for manufacturing a multilayer electrode, the apparatus comprising:
a first suction portion including a suction surface to suck and hold a positive electrode, the first suction portion movable in a direction parallel to the suction surface of the first suction portion;
a second suction portion located beside the first suction portion in a direction parallel to the suction surface of the first suction portion and including a suction surface to suck and hold a negative electrode, the second suction portion movable in a direction parallel to the suction surface of the second suction portion;
a folding portion to fold a separator; and
a control device configured to control operation of the first suction portion, the second suction portion, and the folding portion, wherein
the control device includes a sandwiching control portion, a doping foil bonding control portion, and a doping foil sandwiching control portion,
the sandwiching control portion controls the operation of the first suction portion, the second suction portion, and the folding portion so that each time the separator is folded, the positive electrode and the negative electrode are alternately sandwiched between folded surfaces of the separator,
the doping foil bonding control portion controls the operation of at least one of the first suction portion and the second suction portion so that doping foil is bonded to one of a current collector for doping, the positive electrode, and the negative electrode, the one of the current collector, the positive electrode, and the negative electrode being sucked and held by the at least one of the first suction portion and the second suction portion, and
the doping foil sandwiching control portion controls the at least one of the first suction portion and the second suction portion so that the one of the current collector, the positive electrode, and the negative electrode having the doping foil bonded thereto is transported and sandwiched between a predetermined pair of the folded surfaces of the separator.

2. The apparatus according to claim 1 , wherein
the doping foil bonding control portion controls the operation of the second suction portion so that the doping foil is bonded to the negative electrode sucked and held by the second suction portion, and
the doping foil sandwiching control portion controls the operation of the second suction portion so that the negative electrode having the doping foil bonded to the negative electrode is transported and sandwiched between the predetermined pair of the folded surfaces of the separator, thereby manufacturing the multilayer electrode.

3. The apparatus according to claim 1 , wherein
each of the first suction portion and the second suction portion includes a suction member including a through hole.

4. The apparatus according to claim 1 , further comprising:
a doping foil roll that a doping foil member as a material for the doping foil is wrapped around; and
a doping foil feeder that feeds the doping foil by drawing the doping foil member from the doping foil roll and by cutting the drawn doping foil member into a predetermined length.

5. The apparatus according to claim 4 , wherein
the doping foil feeder includes a press-bonding table where the doping foil is pressed against and bonded to the one of the current collector, the positive electrode, and the negative electrode, and
the press-bonding table includes a non-metallic member that the doping foil is less likely to stick to than to the one of the current collector, the positive electrode, and the negative electrode.

Assignees

• Jtekt Corp

Inventors

• Fuse Masaru
• Suzuki Kazuya
• Fujii Takafumi

Classifications

• B32B2457/16

  Capacitors · CPC title

• B32B37/10 Primary

  characterised by the pressing technique, e.g. using action of vacuum or fluid pressure · CPC title

• H01G11/86

  specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title

• B32B37/14

  characterised by the properties of the layers · CPC title

• H01G11/26 Primary

  characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title