# US 7,706,126 B2 · Structure of supercapacitor and method for manufacturing the same

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- Number: US 7,706,126 B2
- Document ID: US7706126B2
- Status: Granted
- Kind: B2
- Application number: 11/698,139
- Filed: 2007-01-26
- Published: 2008-06-05
- Granted: 2010-04-27
- Earliest claimed: 2006-12-04
- Assignees: Ctech AG
- Inventors: Yung Sheng Huang
- Web page: https://patentgrep.com/patent/US7706126B2

## CPC

- H01G 11/80: Gaskets; Sealings
- H01G 9/08: Housing; Encapsulation
- H01G 9/10: Sealing, e.g. of lead-in wires
- 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 11/24: characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
- 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

The method for manufacturing a supercapacitor according to the present invention includes the following steps. First, stack a bottom electrode plate and a top electrode plate in parallel. Then, install a first rubber frame and a second rubber frame face-to-face on the bottom and the top electrode plates. The first rubber frame is adapted with a first opening, while the second rubber frame is adapted with a second opening. Next, install an isolation membrane in a space surrounded by the first and the second rubber frames. Afterwards, bind the first and the second rubber frames. Then, produce vacuum in the space. Next, place the bottom and the top electrode plates into an electrolyte to make the electrolyte flow into the space. Finally, use a first resin to seal the first and the second openings. Thereby, the short-circuit phenomenon caused by long-term usage of the supercapacitor can be prevented. In addition, the structural strength of the supercapacitor can be reinforced to avoid electrolyte-leakage phenomenon.

## Claims

### Claim 1

A method for manufacturing a supercapacitor, comprising steps of:
a. stacking a bottom electrode plate and a top electrode plate, and making the bottom and the top electrode plates parallel to each other;
b. providing a pair of elastic frames formed of polybutadiene;
c. installing a first of the pair of elastic frames and a second of the pair of elastic frames respectively on the bottom and the top electrode plates, a first opening being formed between terminal ends of the first elastic frame, a second opening being formed between terminal ends of the second elastic frame, and the first and the second elastic frames being disposed facing each other with the first and second openings being in aligned overlaying relationship to form a single access to a space surrounded by the first and second elastic frames;
d. installing an isolation membrane in the space surrounded by the first and the second elastic frames;
e. heating the bottom and the top electrode plates to bind the first and the second elastic frames;
f. submerging the bottom and the top electrode plates of a resulting structure of step e in a container of an electrolyte;
g. evacuating the container to make the electrolyte flow into the space while the resulting structure is submerged in the electrolyte; and
h. inserting a first resin on an inner side of said pair of elastic frames to seal the single access;
i. inserting a second resin on an outer side of said pair of elastic frames in direct contact with the first resin between the bottom and the top electrode plates, said second resin being partially external and outside the first and the second elastic frames to further seal the single access; and
j. forming a shell over said bottom and top electrode plates.

### Claim 2 (depends on 1)

The method for manufacturing a supercapacitor of claim 1, and further comprising a step of hardening the second resin after the step of inserting a second resin between the bottom and the top electrode plates and outside the first and the second elastic frames.

### Claim 3 (depends on 1)

The method for manufacturing a supercapacitor of claim 1, wherein capillary actions are used for inserting the second resin between the bottom and the top electrode plates and outside the first and the second frames.

### Claim 4 (depends on 1)

The method for manufacturing a supercapacitor of claim 1, wherein contact heating by thermal resistors, hot-wind heating, or infrared heating is applied for heating the bottom and the top electrode plates to bind the first and the second elastic frames.

### Claim 5 (depends on 1)

The method for manufacturing a supercapacitor of claim 1, wherein the material of the second resin includes an epoxy resin.

### Claim 6 (depends on 1)

The method for manufacturing a supercapacitor of claim 1, wherein the material of the shell includes hard epoxy resin.

### Claim 7 (depends on 1)

The method for manufacturing a supercapacitor of claim 1, wherein gluing, screen printing, or spraying is applied for installing the first elastic frame and the second elastic frame on the bottom and the top electrode plates.