# US 10,770,228 B2 · Capacitor including electrodes having complementary pattern formed in horizontal direction

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- Number: US 10,770,228 B2
- Document ID: US10770228B2
- Status: Granted
- Kind: B2
- Application number: 15/896,288
- Filed: 2018-02-14
- Published: 2018-08-16
- Granted: 2020-09-08
- Earliest claimed: 2017-02-14
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Jeong Woo Lee; Chan Ki Park
- Web page: https://patentgrep.com/patent/US10770228B2

## CPC

- H01G 4/01: Form of self-supporting electrodes
- H01G 2/106: {Fixing the capacitor in a housing}
- H01G 4/02: Gas or vapour dielectrics
- H01G 4/224: Housing; Encapsulation
- H01G 9/04: Electrodes {or formation of dielectric layers thereon}
- H01G 9/08: Housing; Encapsulation
- H01G 11/12: Stacked hybrid or EDL capacitors
- H01G 11/76: specially adapted for integration in multiple or stacked hybrid or EDL capacitors
- H01G 11/78: Cases; Housings; Encapsulations; Mountings
- H01G 11/82: Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
- H01G 11/00: Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- Y02E 60/10: Energy storage using batteries
- Y02E 60/13: Energy storage using capacitors
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A capacitor includes an electrode assembly, having at least one positive electrode, at least one negative electrode, and at least one dielectric or separator interposed between the positive electrode and the negative electrode, and a case for receiving the electrode assembly. The electrode assembly is configured such that the positive electrode, the negative electrode, and the dielectric or the separator are arranged in a horizontal direction, which is perpendicular to the thickness direction of the electrode assembly, and such that the positive electrode and the negative electrode have a complementary pattern.

## Claims

### Claim 1

A capacitor comprising:
an electrode assembly comprising at least one positive electrode, at least one negative electrode, and at least one dielectric interposed between the positive electrode and the negative electrode; and
a case for receiving the electrode assembly,
wherein each positive electrode and each negative electrode has an L-shape with one straight portion in a horizontal direction and another straight portion in a width direction perpendicular to the horizontal direction, the horizontal and the width directions being perpendicular to a thickness direction of the electrode assembly,
wherein one positive electrode and one negative electrode constitute a basic unit, and
wherein the positive electrode and the negative electrode of each basic unit are arranged to have a complementary pattern such that each basic unit has a rectangular shape in a plan view with respect to the thickness direction.

### Claim 2 (depends on 1)

The capacitor according to claim 1, wherein an electrochemical reaction occurs between first facing portions of the positive electrode and the negative electrode, and between second facing portions of the positive electrode and the negative electrode.

### Claim 3 (depends on 1)

The capacitor according to claim 1, wherein the electrode assembly comprises two or more positive electrodes, two or more negative electrodes, and two or more dielectrics or separators.

### Claim 4 (depends on 3)

The capacitor according to claim 3, wherein a plurality of basic units is arranged in the horizontal direction.

### Claim 5 (depends on 4)

The capacitor according to claim 4, wherein electrodes located at opposite ends of the electrode assembly are a positive electrode and a negative electrode, which are connected to external input and output terminals of the capacitor.

### Claim 6 (depends on 3)

The capacitor according to claim 3, wherein electrodes located between the electrodes located at the opposite ends of the electrode assembly are not connected to the external input and output terminals of the capacitor.

### Claim 7 (depends on 1)

The capacitor according to claim 1, wherein the dielectric is air.

### Claim 8 (depends on 1)

The capacitor according to claim 1, wherein the capacitor has a thickness of 1 mm or less.

### Claim 9 (depends on 1)

A secondary battery pack comprising a capacitor according to claim 1 as an auxiliary power source.