Coin-type secondary battery, manufacturing method therefor, and apparatus for charging/discharging coin-type secondary battery

Patent metadata

Field	Value
Publication number	US-11211633-B2
Application number	US-201916685054-A
Country	US
Kind code	B2
Filing date	Nov 15, 2019
Priority date	May 26, 2015
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

The present disclosure relates to a method for manufacturing a coin-type secondary battery. The method includes at least: bonding one or more solid electrolytes to an anode upper case; forming an anode active material layer on an anode current collector; sequentially stacking the anode current collector on which the anode active material layer is formed and the anode upper case to which the one or more solid electrolytes are bonded on an anode bottom case to obtain an anode part; sequentially stacking the anode part, a separator, a cathode current collector, and a second case including one or more openings on a first case; bonding the first case to the second case; and introducing an ion-containing solution containing sodium, lithium, magnesium, and a combination thereof from the outside of the second case into an interior thereof.

First claim

The invention claimed is:

1. A method for manufacturing a coin-type secondary battery, comprising:
bonding one or more solid electrolytes to an anode upper case;
forming an anode active material layer on an anode current collector;
sequentially stacking the anode current collector on which the anode active material layer is formed and the anode upper case to which the one or more solid electrolytes are bonded on an anode bottom case to obtain an anode part;
injecting a liquid electrolyte into the anode part;
disposing a gasket that has a direct contact with an inner side surface of the anode bottom case, an outer side surface of the anode upper case, and the liquid electrolyte, and prevents leakage of the liquid electrolyte injected into the anode part;
sequentially stacking the anode part, a separator, a cathode current collector, and a second case including one or more openings on a first case;
bonding the first case to the second case; and
introducing an ion-containing solution containing sodium, lithium, magnesium, and a combination thereof from the outside of the second case into an interior thereof,
wherein, in the bonding of the one or more solid electrolytes to the anode upper case, one or more openings are disposed in the anode upper case and the one or more solid electrolytes are bonded to the one or more openings in the anode upper case; and, in the introducing of the ion-containing solution containing sodium, lithium, magnesium, and a combination thereof from the outside of the second case into a cathode part, the ion-containing solution flows from the outside of the second case into the cathode part through the one or more openings of the second case, and
wherein the separator is a non-electric conductive diaphragm, and prevents a short circuit between the anode part and the cathode part,
wherein the cathode current collector comprises at least one selected from the group consisting of a carbon paper, a carbon fiber, a carbon cloth, carbon felt, and a metal thin film.

2. The method of claim 1 , wherein the bonding of the one or more solid electrolytes to the anode upper case includes bonding the one or more solid electrolytes to the anode upper case using an adhesive.

3. The method of claim 2 , wherein the adhesive includes one or more materials selected from the group consisting of a silicon (Si) based material, an epoxy-based material, and a combination thereof.

4. The method of claim 2 , wherein each of the one or more solid electrolytes is selected from the group consisting of a Na superionic conductor (NASICON), a Li superionic conductor (LISICON), an amorphous ion conductive material, a ceramic ion conductive material, and a combination thereof.

Assignees

• Ulsan Nat Inst Science & Tech Unist

Inventors

• Kim Young Sik
• Han Jin Hyup
• Hwang Soo Min

Classifications

• H01M50/489

  Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties · CPC title

• H01M10/46

  Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M2004/027

  Negative electrodes · CPC title