Electrospinning apparatus and method for manufacturing separator-integrated electrode

Patent metadata

Field	Value
Publication number	US-11594787-B2
Application number	US-202016895011-A
Country	US
Kind code	B2
Filing date	Jun 8, 2020
Priority date	Aug 8, 2019
Publication date	Feb 28, 2023
Grant date	Feb 28, 2023

Abstract

According to one embodiment, an electrospinning apparatus deposits a fiber on an electrode. The apparatus includes a transport section and a fiber deposition section. The transport section transports electrodes. The fiber deposition section deposits the fiber on first and second surfaces of the electrodes. The electrodes include coated and uncoated portions. The transport section transports the electrodes in a third direction in the fiber deposition section. The electrodes include first and second electrodes. The first electrode is positioned at one end in the second direction and transported so that the uncoated portion of the first electrode protrudes toward the one end side. The second electrode is positioned at other end in the second direction and transported so that the uncoated portion of the second electrode protrudes toward the other end side.

First claim

What is claimed is:

1. A method for manufacturing a separator-integrated electrode including a separator, the method comprising:
forming the separator by depositing a fiber on a first surface and a second surface of a plurality of electrodes while arranging the plurality of electrodes in a second direction orthogonal to a first direction and transporting the plurality of electrodes in a third direction orthogonal to the first direction and the second direction, the plurality of electrodes including a first electrode layer including the first surface, a second electrode layer including a second surface facing an opposite side to the first surface, and a current collector layer positioned between the first electrode layer and the second electrode layer in the first direction perpendicular to the first surface and the second surface; and
pressurizing, by a pressurizing section, the plurality of electrodes including the fiber deposited,
the plurality of electrodes including a coated portion and an uncoated portion, the current collector layer overlapping the first electrode layer and the second electrode layer in the first direction on the coated portion, the current collector layer not overlapping the first electrode layer and the second electrode layer in the first direction on the uncoated portion,
the uncoated portion protruding from the coated portion toward one side in the second direction,
the plurality of electrodes including a first electrode and a second electrode, the first electrode being positioned at one end in the second direction, the second electrode being positioned at other end in the second direction,
in forming the separator,
the first electrode being transported so that the uncoated portion of the first electrode protrudes toward the one end, and
the second electrode being transported so that the uncoated portion of the second electrode protrudes toward the other end,

the transporting the plurality of electrodes side by side so that the fiber is deposited over two adjacent electrodes of the plurality of electrodes, and
the pressurizing section including a pair or more first press rollers sandwiching at least one of the plurality of electrodes and a pair or more second press rollers sandwiching the fibers that are deposited over the two adjacent electrodes.

2. An electrospinning apparatus depositing a fiber, the electrospinning apparatus comprising:
a transport section transporting a plurality of electrodes;
a fiber deposition section depositing the fiber on a first surface and a second surface of the plurality of electrodes, the plurality of electrodes being transported by the transport section, the second surface facing an opposite side to the first surface, and
a pressurizing section pressurizing the plurality of electrodes including the fiber deposited,
each of the plurality of electrodes including a first electrode layer including the first surface, a second electrode layer including the second surface, and a current collector layer positioned between the first electrode layer and the second electrode layer in a first direction perpendicular to the first surface and the second surface,
the plurality of electrodes including a coated portion and an uncoated portion, the current collector layer overlapping the first electrode layer and the second electrode layer in the first direction on the coated portion, the current collector layer not overlapping the first electrode layer and the second electrode layer in the first direction on the uncoated portion,
the uncoated portion protruding from the coated portion toward one side in a second direction orthogonal to the first direction,
the transport section transporting the plurality of electrodes in a third direction in the fiber deposition section, the third direction being orthogonal to the first direction and the second direction,
the plurality of electrodes being arranged in the second direction and including a first electrode and a second electrode, the first electrode being positioned at one end in the second direction, the second electrode being positioned at other end in the second direction,
the first electrode being transported so that the uncoated portion of the first electrode protrudes toward the one end,
the second electrode being transported so that the uncoated portion of the second electrode protrudes toward the other end,
the transport section transporting the plurality of electrodes side by side so that the fiber is deposited over two adjacent electrodes of the plurality of electrodes in the fiber deposition section, and
the pressurizing section including a pair or more first press rollers sandwiching at least one of the plurality of electrodes and a pair or more second press rollers sandwiching the fibers that are deposited over the two adjacent electrodes.

3. The electrospinning apparatus according to claim 2 , further comprising: a cutting section cutting the fiber deposited over the two adjacent electrodes.

4. The electrospinning apparatus according to claim 2 , wherein the transport section includes a position correction section correcting positions of the plurality of electrodes transported to the fiber deposition section.

5. The electrospinning apparatus according to claim 2 , wherein the transport section transports the plurality of electrodes side by side so that a distance between the two adjacent electrodes in the fiber deposition section is equal to a thickness of the plurality of electrodes or larger than the thickness of the plurality of electrodes.

Assignees

• Toshiba Kk

Inventors

• Kishi Toshiyuki

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• D01D10/04

  Supporting filaments or the like during their treatment · CPC title

• H01M4/0435

  Rolling or calendering · CPC title

• H01M10/0525

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

• H01M50/44

  Fibrous material · CPC title