KR102488105B1 - Manufacturing method of super condenser and thereof super condenser - Google Patents

Abstract

The present invention relates to a super condenser manufacturing method and a super condenser thereby and, more specifically, to a super condenser manufacturing method and a super condenser thereby, wherein a condenser cell is formed by stacking a first electrode, a separator, and a second electrode in sequence and pressing the first electrode, the separator, and the second electrode, thereby reducing leakage current and improving the charging and discharging speed, and preventing electrical accidents due to reduced heat generation. The super condenser manufacturing method according to the present invention comprises: a material preparation step of preparing a first electrode plate, a second electrode plate, and a separator; a dielectric material coating step in which a dielectric material is coated on the surfaces of the first and second electrode plates; a stacking step in which the first electrode plate, the separator, and the second electrode plate are sequentially stacked in repetition; a pressing step in which the stacked body formed in the stacking step is pressed; a packaging step in which the pressed body formed in the pressing step is packaged; an assembly step in which the condenser cells formed in the packaging step are stacked and housed in a housing, and a connection terminal provided in the housing is electrically connected to the electrode lead of the condenser cells. The super condenser according to the present invention comprises: a cell stack formed by sequentially stacking and pressing a first electrode plate, a separator, and a second electrode plate; and a housing in which the cell stack is housed, and which has a connection terminal provided on the outer surface of the housing to be electrically connected to an electrode lead of the cell stack, wherein the separator is made of polyvinyl chloride.

Description

Manufacturing method of super condenser and its super condenser

The present invention relates to a method for manufacturing a supercapacitor used as a secondary battery for charging and discharging power and a supercapacitor according thereto, and more particularly, to a multilayer capacitor cell in which a first electrode, an interlayer, and a second electrode are repeated in order. The present invention relates to a manufacturing method of a supercapacitor that has a structure, has low leakage current, improves charging and discharging speed, and generates little heat to prevent electrical accidents, and the supercapacitor accordingly.

A supercapacitor is an ultra-high-capacity energy storage device that has a much higher capacity than a general capacitor or electrolytic capacitor. An ultra-high-capacity supercapacitor is a power source that stores a lot of energy and emits high energy for tens of seconds or minutes. It is a useful renewable energy storage device that can fill the performance characteristics area that conventional general capacitors and secondary batteries cannot accommodate.

Super capacitors exhibit excellent charging performance in storing power generated and output from various renewable energy facilities such as photovoltaic power generation facilities, wind power generation facilities, and tidal power facilities.

Super capacitors have a long semi-permanent lifespan, hundreds of thousands of charging and discharging cycles, operating temperature conditions (-40 to +90 ℃), high charging and discharging efficiency (95 to 99%), and eco-friendly materials. As a device for energy storage having the configured advantages, etc., it is used as a main power source and an auxiliary power source in place of a storage battery.

In the prior art related to supercapacitors, Patent Publication 10-2019-0087088 "Supercapacitor and method for manufacturing the same" and Patent Registration 10-1120052 "Hybrid supercapacitor and manufacturing method using composite electrodes" have been disclosed.

A supercapacitor according to the prior art includes a casing, a first electrode and a second electrode alternately arranged in the casing, a separator for separating and insulating the first electrode and the second electrode, and a separator filled in the casing to separate the first electrode and the second electrode. It is composed of an electrolyte solution into which electrodes and separators are impregnated.

In the supercapacitor according to the prior art, it takes time to impregnate the first electrode, the second electrode, and the separator with the electrolyte, resulting in low productivity, and oil paper is mainly used as an interlayer, but oil paper is easy to tear, so care must be taken in handling, If this is not perfect, electrolyte penetrates and leakage current is generated.

In addition, the supercapacitor according to the prior art generates considerable heat and is at risk of fire or explosion.

The present invention has been made to solve the problems of the supercapacitor according to the prior art, and the first electrode plate, the slip sheet, and the second electrode plate are repeatedly laminated in the order, compressed, and packaged to form a capacitor cell, An object of the present invention is to provide a super capacitor that reduces leakage current, improves charging and discharging speed, and reduces heat generation to prevent fire or explosion.

In addition, it is easy to handle by using synthetic resin vinyl as a slipper, completely blocks the penetration of the dielectric material interposed between the first electrode plate and the second electrode plate, so that leakage current does not occur, and the casing and cover of the housing are anti-loosening bolts. Another object is to provide a supercapacitor stably coupled with .

A method for manufacturing a supercapacitor according to the present invention to achieve the above object is

A material preparation step of preparing a first electrode plate, a second electrode plate, and slip sheet;

a dielectric material application step of applying a dielectric material to surfaces of the first electrode plate and the second electrode plate;

a laminating step of repeatedly laminating the first electrode plate, the slip sheet, and the second electrode plate in order;

a compression step of compressing the laminate formed in the lamination step;

A packaging step of packaging the compressed body formed in the compression step;

and an assembling step of stacking the capacitor cells formed in the packaging step, embedding them in a housing, and connecting connection terminals provided in the housing with electrode leads of the capacitor cells.

The supercapacitor according to the present invention manufactured by such a manufacturing method

a cell stack composed of stacking capacitor cells formed by repeatedly stacking and then compressing the first electrode plate, the slip sheet, and the second electrode plate in that order;

A housing in which the cell stack is embedded and having a connection terminal electrically connected to an electrode lead of the cell stack on an outer surface thereof,

The interlacing paper is characterized in that it is polyvinyl chloride.

And it is characterized in that the surface of the slip sheet is coated with silicone,

The housing includes a casing containing the cell stack;

Covering the opening of the casing and including a cover provided with the connection terminal,

A screw hole is formed in the casing, a through hole and a polygonal groove having a polygonal structure having an inner diameter larger than the through hole are formed in the cover,

An anti-loosening bolt assembly is fastened to the screw hole of the casing, the through hole and the polygonal groove of the cover,

The anti-loosening bolt assembly

A pin portion passing through the through hole and screwed into the screw hole, a head portion provided behind the pin portion and having an outer diameter smaller than the inner diameter of the polygonal groove, and a tool groove formed on a rear surface of the head portion; A fixing bolt including a guide groove formed on a side surface of the head portion and a first sawtooth portion formed on an outer circumferential surface of the head portion behind the guide groove;

A body having a polygonal structure that can be fitted into the polygonal groove, an insertion hole formed inside the body and into which the head part is inserted, and formed on the inner circumferential surface of the body behind the insertion hole and engaged with the first sawtooth portion. It is composed of a second toothed portion and a fixing nut including a guide protrusion protruding inward from the front of the body and moving forward and backward along the guide groove,

After screwing the pin part of the fixing bolt into the threaded hole of the casing, if the body of the fixing nut is pushed into the polygonal groove of the cover, rotation of the body is prevented, and the first and second teeth are engaged to It is characterized in that the loosening of the fixing bolt is prevented.

The manufacturing method of the supercapacitor according to the present invention configured as described above and the supercapacitor according to the supercapacitor is a supercapacitor using a capacitor cell that is repeatedly laminated, compressed, and packed in the order of the first electrode plate, the slip sheet, and the second electrode plate. A manufacturing method and supercapacitor according to it, in which a capacitor cell is divided into several layers, power is stored in each divided layer, and the stored power is discharged. Leakage current is reduced and the charging and discharging speed is improved by about 30%. A method for manufacturing a super capacitor that generates almost no heat, prevents electrical fires or explosions, has excellent efficiency, and has no risk of separation as the casing and cover of the housing are stably coupled through anti-loosening bolts, and the super capacitor according to the method As such, it is very useful for industrial development.

1 is a procedure diagram of a method for manufacturing a supercapacitor according to the present invention.
2 is a perspective view of a super capacitor according to the present invention;
Figure 3 is an exploded perspective view of Figure 2;
4 is an exploded perspective view of a battery cell;
5 is a view showing the structure of an anti-loosening bolt assembly;

Hereinafter, a supercapacitor according to the present invention will be described in more detail with reference to the drawings.

Prior to a more detailed description of the supercapacitor according to the present invention,

Since the present invention can have various changes and various forms, the implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

In each drawing, the same reference numeral, in particular, the same number of tens and ones digits, or the same reference numerals having the same tens digit, ones digit, and alphabet indicate members having the same or similar functions, and unless otherwise specified, each of the drawings Members indicated by reference numerals may be understood as members conforming to these standards.

In addition, the components in each drawing are expressed in exaggeratedly large (or thick) small (or thin) or simplified expressions in size or thickness in consideration of convenience of understanding, etc., but the scope of protection of the present invention is thereby limited. It shouldn't be.

Terms used in this specification are only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as ~comprising~ or ~consisting of are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

As shown in FIG. 1, the supercapacitor manufacturing method according to the present invention includes a material preparation step (S10), a dielectric material application step (S20), a lamination step (S30), a compression step (S40), a packaging step (S50), and an assembly step. (S60).

In the material preparation step (S10), materials such as the first electrode plate 12, the second electrode plate 13, the slip sheet 14, and the dielectric material are prepared, and equipment such as a sprayer, a pressurizer, and a packaging machine is prepared, Prepare to fabricate a super capacitor.

In the dielectric material applying step ( S20 ), the dielectric material is sprayed and applied to the surfaces of the first electrode plate 12 and the second electrode plate 13 .

The dielectric material includes graphite, various chemical components, and water. The dielectric material has a concentration that easily spreads in the first electrode plate 12 and the second electrode plate 13 .

In the stacking step (S30), the first electrode plate 12, the slip sheet 14, and the second electrode plate 13 are repeatedly laminated in this order. In the present invention, 22 of each of the first electrode plate 12, the separator sheet 14, and the second electrode plate 13 are used, and a laminate thereof is formed by using the first electrode plate 12, the separator sheet 14 , unit capacitor cells composed of the second electrode plate 13 are stacked in 22 layers.

In the pressing step (S40), the laminates stacked in the stacking step are compressed so that they are closely bonded, and oxygen penetrating between them is removed. In the compression step (S40), a pressure between 1 atm and 6 atm is applied.

Before or after pressing the laminate, electrode leads of the first electrode plate 12 and the second electrode plate 13 are connected so that unit capacitor cells are connected in series or in parallel.

Then, a large ground terminal (GND) is exposed on the surface of the laminate on the copper plate, which is the first electrode plate 12 . The large-area ground terminal has the effect of reducing the change in temperature during the movement of other currents during charging and discharging.

In the packaging step (S50), the compressed body compressed in the compression step (S40) is packaged in a pouch. At this time, the electrode leads of the first electrode plate 12 and the second electrode plate 13 are exposed to the outside of the pouch.

In the assembling step (S60), the condenser cells packed in the packaging step (S50) are stacked and embedded in the casing 21 of the housing 20, and the electrode leads 12a and 13a of the condenser cells and the housing 20 A super capacitor is manufactured by connecting the connection terminals 30 provided on the cover 23 and coupling the cover 23 to the casing 21.

Referring to FIGS. 2 to 4 , the supercapacitor according to the present invention manufactured by the above manufacturing method is roughly divided into components of a cell stack 10 and a housing 20 .

The cell stack 10 is formed by stacking a plurality of capacitor cells 11 .

The capacitor cell 11 is repeatedly laminated in the order of the first electrode plate 12, the slip sheet 14, and the second electrode plate 13, and is formed by pressing after the lamination.

Before stacking the first electrode plate 12 and the second electrode plate 13, a dielectric material including graphite is sprayed and applied to the surface.

Compared to the method of precipitating the electrolyte between the first electrode plate 12, the slip sheet 14, and the second electrode plate 13 in the prior art, the present invention is applied by spraying the dielectric material, and the production speed is increased. significantly shortened

The repeatedly stacked first electrode plate 12, slip sheet 14, and second electrode plate 13 are pressed and tightly bonded at a pressure of 1 to 6 atm, and the air remaining between them is extracted. do.

The first electrode plate 12 and the second electrode plate 13 serve as a negative electrode plate and a positive electrode plate, respectively. Electrode leads 12a and 13a protrude from the first electrode plate 12 and the second electrode plate 13, and the electrode lead 12a of the first electrode plate 12 and the second electrode plate ( The electrode leads 13a of 13) are connected to each other and electrically connected to the connection terminal 30 provided on the cover 23 of the housing 20.

The electrode leads 12a and 13a may be provided on one side or both sides of the first electrode plate 12 and the second electrode plate 13, and unit capacitor cells may be connected in series to each other depending on the connection method. , connected in parallel. For reference, here, the unit capacitor cell has a configuration in which the first electrode plate 12, the slip sheet 14, and the second electrode plate 13 are stacked one by one.

The first electrode plate 12 and the second electrode plate 13 may be made of activated carbon, carbon, lead, aluminum, copper, gold, silver, titanium, or an alloy made of combinations thereof. In the present invention, a copper plate is used as the first electrode plate 12 and an aluminum plate is used as the second electrode plate 13.

The slip sheet 14 is disposed between the first electrode plate 12 and the second electrode plate 13 to separate and insulate them.

In the present invention, synthetic resin vinyl is used as the interleaving paper 14. Synthetic resin vinyl is durable and easy to handle because there is no deformation or damage such as tearing or wrinkles. can save

Synthetic resin vinyl such as PE vinyl, PP vinyl, and PVC vinyl may be used as the interleaving sheet 14 . In particular, PCV (polychloride) vinyl is preferable because it is excellent in durability and insulation, and is excellent in deterioration.

As the interleaving paper 14, the surface of the synthetic resin vinyl may be coated with silicone. Silicon increases the durability and airtightness of the slip sheet 14, thereby increasing leakage current blocking efficiency.

The first electrode plate 12 , the slip sheet 14 , and the second electrode plate 13 are repeatedly laminated and the compressed capacitor cell 11 is packaged in a pouch 15 . At this time, the electrode leads 12a and 13a of the first electrode plate 12 and the second electrode plate 13 are exposed to the outside of the pouch 15 .

Capacitor cells 11 packaged in pouches are stacked to form a cell stack 10, and the cell stack 10 is embedded in a housing 20, and electrode leads 12a and 13a connect terminals 30 electrically connected to

The battery cell 11 includes 22 first electrode plates 12, slip sheets 14, and 22 second electrode plates 13, respectively.

Assuming that the capacity of the condenser cell 11 is 77W/4.2V, the condenser cell according to the prior art is provided with one first electrode plate, slip sheet, and one second electrode plate, so that one first electrode plate and one second electrode plate are provided. It bears the entire capacity of 77W/4.2V. In the present invention, since 22 unit capacitor cells composed of the first electrode plate 12, slip sheet 14, and second electrode plate 13 are provided, one unit capacitor The cell bears a capacity of 3.5W/0.19V.

Due to this difference, compared to the prior art, the present invention hardly generates leakage current, generates less heat, and improves the charge/discharge rate by about 30%. The supercapacitor according to the present invention, which does not generate leakage current and generates less heat, has a longer lifespan and prevents electrical accidents such as fire or explosion.

Even if a problem occurs in some of the unit capacitor cells, the remaining unit capacitor cells except for the unit capacitor cell in which the problem occurs operate normally.

The housing 20 is composed of a casing 21 and a cover 23 covering an opening of the casing 21 .

The cell stack 10 is inserted into the opening of the casing 21, and the electrode leads 12a and 13a of the cell stack 10 electrically connect to the connection terminal 30 provided on the cover 23. , and the cover 23 is coupled to the casing 21 by being fastened with bolts.

At this time, since the bolt has a structure that cannot be tightened with a nut, the bolt is gradually loosened by an impact such as vibration continuously applied to the housing 20 .

Accordingly, in the present invention, the cover 23 is stably fixedly coupled to the casing 21 using the anti-loosening bolt assembly 100 to prevent unintentional loosening.

Referring to FIGS. 3 and 5 , a through hole 24 and polygonal polygonal grooves 25 are formed in the cover 23 , and a screw hole 22 is formed in the casing 21 .

The anti-loosening bolt assembly 100 is composed of a fixing bolt 110 and a fixing nut 120.

The fixing bolt 110 passes through the through hole 24 of the cover 18 and has a pin portion 111 screwed into the screw hole 22 of the casing 1 and a rear portion of the pin portion 111. and a head portion 112 having an outer diameter smaller than the inner diameter of the polygonal groove 25. In addition, a tool groove 113 to which a tool such as a screwdriver or a wrench is coupled is formed on the rear surface of the head portion 112, and a guide groove 114 is formed on the side surface of the head portion 112, and the guide groove ( 114), a first toothed portion 115 is formed on the outer circumferential surface of the side of the head portion 112.

The fixing nut 120 is formed inside the body 121 having a polygonal structure that can be fitted into the polygonal groove 25 of the cover 18 and the body 121, so that the head portion 112 is interpolated. An insertion hole 122, a second sawtooth part 125 formed on the inner circumferential surface of the body 121 to the rear of the insertion hole 122 and engaged with the first sawtooth part 115, and the body 121 It protrudes inward from the front of the ) and is disposed in the guide groove 114 to include a guide protrusion 124 capable of moving forward and backward along the guide groove 114.

The process of fastening and fixing the cover 18 of the bracket 19 to the casing 1 by the anti-loosening bolt assembly 100 configured as described above is as follows.

First, when the guide protrusion 124 is moved up and down from the guide groove 114, the first toothed portion 115 and the second toothed portion 125 are disengaged, and in this state, the fixing bolt 110 is fixed to the fixing nut 120 ), it is possible to rotate without being affected by

In a state in which the first tooth portion 115 and the second tooth portion 125 are not engaged, the pin portion 111 of the fixing bolt 110 passes through the polygonal groove 25 and the through hole 24, and the tool is inserted into the tool. Match the groove 113 and rotate the fixing bolt 110 so that the pin 111 is screwed into the screw hole 22 of the casing 90.

When the fixing nut 120 is pushed into the polygonal groove 25 after the screwing of the pin part 111 is completed, the polygonal surface of the body 121 is placed in the polygonal groove 25 so that the body 121 cannot rotate. do.

In addition, since the second sawtooth portion 125 of the fixing nut 120 and the first sawtooth portion 115 of the fixing bolt 110 are engaged, the fixing bolt 110 cannot rotate.

As such, the rotation of the fixing nut 120 is limited by the polygonal groove 25, and the rotation of the fixing bolt 110 is limited by the engagement of the first toothed portion 115 and the second toothed portion 125, so that the fixed Loosening of the bolt 110 is prevented.

When the cap 130 is coupled to the polygonal groove 25 after the fixing nut 120 is pushed into the polygonal groove 25, unintentional backward movement of the fixing nut 120 can be prevented.

When the cover 18 of the bracket 19 is separated from the casing 1, the cap 130 is separated from the polygonal groove 25, the fixing nut 120 is separated from the polygonal groove 25, and then the fixing bolt It can be easily loosened by rotating (110). In order to easily separate the cap 130 and the fixing nut 120 from the polygonal groove 25, a release groove may be formed in them to pull out after inserting a release pin.

In the above description of the present invention, a supercapacitor having a specific shape and structure has been described with reference to the accompanying drawings, but the present invention is capable of various modifications and changes by those skilled in the art, and these modifications and changes are within the scope of protection of the present invention. should be interpreted as belonging to

S10: Material preparation step S20: Dielectric material application step
S3: lamination step S40: compression step
S50: packaging step S60: assembly step
10: cell laminate 11: condenser cell
12: first electrode plate 13: second electrode plate
14: Kanji 15: Hauchi
20: housing 21: casing
22: screw hole 23: cover
24: through hole 25: polygonal groove
30: connection terminal
100: anti-loosening bolt assembly 110: fixing bolt
120: fixing nut 130: cap

Claims (4)

A material preparation step of preparing a first electrode plate, a second electrode plate, and slip sheet;
a dielectric material application step of applying a dielectric material to surfaces of the first electrode plate and the second electrode plate;
a laminating step of repeatedly laminating the first electrode plate, the slip sheet, and the second electrode plate in order;
a compression step of compressing the laminate formed in the lamination step;
A packaging step of packaging the compressed body formed in the compression step;
In the supercapacitor manufacturing method comprising: stacking the capacitor cells formed in the packaging step and embedding them in a housing, and connecting a connection terminal provided in the housing and electrode leads of the capacitor cells,

The housing includes a casing containing a cell stack in which the capacitor cells are stacked, and a cover covering an opening of the casing and having the connection terminal,
A screw hole is formed in the casing, a through hole and a polygonal groove having a polygonal structure having an inner diameter larger than the through hole are formed in the cover,
An anti-loosening bolt assembly is fastened to the screw hole of the casing, the through hole and the polygonal groove of the cover,

The anti-loosening bolt assembly
A pin portion passing through the through hole and screwed into the screw hole, a head portion provided behind the pin portion and having an outer diameter smaller than the inner diameter of the polygonal groove, and a tool groove formed on a rear surface of the head portion; A fixing bolt including a guide groove formed on a side surface of the head portion and a first sawtooth portion formed on an outer circumferential surface of the head portion behind the guide groove;
A body having a polygonal structure that can be fitted into the polygonal groove, an insertion hole formed inside the body and into which the head part is inserted, and formed on the inner circumferential surface of the body behind the insertion hole and engaged with the first sawtooth portion. It is composed of a second toothed portion and a fixing nut including a guide protrusion protruding inward from the front of the body and moving forward and backward along the guide groove,
After screwing the pin part of the fixing bolt into the threaded hole of the casing, if the body of the fixing nut is pushed into the polygonal groove of the cover, rotation of the body is prevented, and the first and second teeth are engaged to Supercapacitor manufacturing method characterized in that the loosening of the fixing bolt is prevented. A supercapacitor produced by claim 1,
a cell stack composed of stacking capacitor cells formed by repeatedly stacking and then compressing the first electrode plate, the slip sheet, and the second electrode plate in that order;
A housing in which the cell stack is embedded and having a connection terminal electrically connected to an electrode lead of the cell stack on an outer surface thereof,
The supercapacitor, characterized in that the interlayer is polyvinyl chloride. According to claim 2,
A supercapacitor, characterized in that silicon is coated on the surface of the slip sheet. delete

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