An Electric Double Layer Capacitor for High Voltage and Large Capacity with Low Self-discharging
Patent Information
- Application Number
- KR1020250012936
- Authority / Receiving Office
- KR · KR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-03
- Publication Date
- 2026-08-11
Smart Images
Figure PAT00001_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to an electric energy storage device, particularly an electric double-layer capacitor, and more specifically, to a parallel terminal electrode with an expanded electrode area by using a cross-sectional additional electrode having a plurality of through-holes formed on a conductive foil cross-sectional electrode having an electrode formed on one side of a conductive foil, and a cross-sectional additional electrode having a plurality of through-holes formed on the electrode surface of a conductive plate cross-sectional electrode having an electrode formed on one side of a conductive plate inside the electric double-layer capacitor to be connected in a face-to-face arrangement, and a series-parallel connection electrode with an expanded electrode area by using a cross-sectional additional electrode having a plurality of through-holes formed on one side and the other side of a conductive foil double-sided electrode having an electrode formed on one side and the other side of a conductive foil respectively to be connected in parallel, and a capacitor container having a slit having a plurality of electrode slits and a capacitor lid having a slit to be arranged so that the parallel terminal electrode and the series-parallel connection electrode are physically separated and prevent electrical contact while being arranged to face each other. The present invention relates to a low self-discharge high-voltage and high-capacity electric double layer capacitor configured to ionically connect without an interface that hinders the movement of cations and anions in the electrolyte layer, thereby improving conductivity; a capacitance that increases in proportion to the number of cross-sectional additional electrodes equipped with through-paths of multiple cross-sectional electrodes connected in parallel; self-discharge that is significantly improved due to the electric field superposition effect according to the cross-sectional additional electrodes equipped with through-paths of cross-sectional electrodes; voltage that increases according to the number of series and parallel connected electrodes; and energy storage and output characteristics that are improved, thereby reducing self-discharge and maintaining electrical energy stored for a long time. Background Technology
[0002] An electric double layer capacitor comprises a first polarity double-sided electrode (155) and a second polarity double-sided electrode (156) having a porous electrode layer (155b, 155c, 156b, 156c) formed by the evaporation of the solvent mixed in the applied slurry, wherein a plurality of pores are formed by uniformly applying a slurry mixed in a solvent containing an electrode material with a large specific surface area, such as activated carbon, a binder for attaching the electrode material to the conductive foil, and a conductive material onto the surface of a conductive foil (155a, 156a) as shown in the example of FIG. 1a.
[0003] For external connection, the first terminal (152) of the electric double layer capacitor is connected to the first polarity double-sided electrode (155) via a tap (not shown), and the second terminal (154) of the electric double layer capacitor is connected to the second polarity double-sided electrode (156). Then, the first polarity double-sided electrode (155) and the second polarity double-sided electrode (156) are arranged so that the electrode layer surfaces (155b-156b, 155c-156c) face each other to form an electrode pair. A porous separator (157) is placed between the electrode layer surfaces and on the back of the first polarity double-sided electrode (155) to separate the facing electrode layer surfaces so that they do not come into contact and conduct, and the separator is placed so that it completely covers the facing electrode layer surface more widely than the facing electrode layer surface between the electrode layer surfaces. The capacitor is then wound into a circular outer shape called a jelly roll and formed into a capacitor container in the shape of a can, which is generally cylindrical. After placing and positioning the capacitor container (151) inside, and arranging the capacitor container (151) so that the first terminal (152) and the second terminal (154) of the electric double layer capacitor come out through the sealing plate (159) to block the opening of the capacitor container (151), the part of the capacitor container (151) where the sealing plate (159) is located is compressed so that the sealing plate (159), the capacitor container (151), and the first terminal (152) and second terminal (154) of the electric double layer capacitor penetrating the sealing plate (159) are tightly sealed, and the electrolyte (158) is injected through the electrolyte injection port (not shown) of the sealing plate (159) into the pores of the porous separator (157) placed inside the capacitor container (151) and A cation that can move through the pores of the porous separator (157) to the electrolyte (158) solvent molecule layer adsorbed on the activated carbon surface of the electrode layer (155b, 156b, 155c, 156c) and the electrolyte (158) solvent molecule layer adsorbed on the activated carbon surface of the electrode layer (155b, 156b, 155c, 156c) by being dissolved in the electrolyte (158) and moving to the electrolyte (158) solvent molecule layer adsorbed on the activated carbon surface of the electrode layer (155b, 156b, 155c, 156c) by injecting so as to impregnate the pores of the electrode layer (155b, 156b, 155c, 156c), the electrolyte (158) solvent molecule layer dissolved in the electrolyte (158), and the electrolyte (158) solvent molecule layer adsorbed on the activated carbon surface of the electrode layer (155b, 156b, 155c, 156c),When an electrostatic double layer is formed at the interface of the electrolyte (158) in contact with the membrane formed by the solvent molecular layers of the electrolyte (158) adsorbed on the surface of the activated carbon of the electrode layers (155b, 156b, 155c, 156c) of the first polarity bipolar electrode (155) and the second polarity bipolar electrode (156) by anions, and the cations and anions of the electrolyte (158) are physically separated and electrically separated through the pores of the porous separator (157), and the facing electrode layers (155b-156b, 155c-156c) are configured to be ionically connected according to ion movement, it operates as an electrostatic double layer capacitor (150).
[0004] As shown in the example of FIG. 1a1, a first polarity double-sided electrode (155) and a second polarity double-sided electrode (156) are arranged so that their electrode layers (155b-156b, 155c-156c) face each other to form an electrode pair, and a porous separator (157) is placed between the electrode layers and on the back of the first polarity double-sided electrode (155) respectively so as to completely cover the electrode layer facing the electrode layer face more widely than the electrode layer facing the electrode layer between the electrode layers. When a portion of the jelly-roll (dotted line A) formed by this arrangement is enlarged, as shown in FIG. 1a2, a structure is formed in which the first polarity double-sided electrode (155) and the second polarity double-sided electrode (156) face each other with the separator (157) in between, and the electrode pairs are stacked in multiple layers. In the unfilled state, the electrolyte (158) is filled between each electrode pair, and each layer is connected in a spiral jelly-roll structure. The first polarity double-sided electrode (155) and the second polarity double-sided electrode (156) are neutral, and the electrolyte cations (158a) and electrolyte anions (158c) of the electrolyte (158) are randomly and disorderly distributed in the electrolyte solvent (158b). As shown in the example in FIG. 1a3, when the first polarity double-sided electrode (155) is connected to the negative electrode and the second polarity double-sided electrode (156) is connected to the positive electrode for charging, the electrode layers (155b, 155c) of the first polarity double-sided electrode (155) become negatively polarized as electrons introduced during charging accumulate on the electrode surface. Consequently, the electrolyte solvent (158b) molecules that are adsorbed and distributed across the surface of the electrode layers (155b, 155c) of the first polarity double-sided electrode (155) become polarized (not shown), and at the same time, the electrolyte cations (158a) of the electrolyte (158) on the surface The electrode layers (156b, 156c) of the second polarity double-sided electrode (156) are arranged facing each other and charged through mutual attraction, and as electrons flow out and become polarized according to the charge, the electrode layer (156b, 156c) of the second polarity double-sided electrode (156)156c) As the electrolyte solvent (158b) molecules adsorbed on the surface and distributed across the entire surface are polarized in the reverse direction (not shown), and at the same time the electrolyte anions (158c) of the electrolyte (158) are mutually attracted to the surface and arranged facing each other, the electrode layers (155b, 155c) of the first polarity double-sided electrode (155) that are negatively polarized form a capacitor with the charged electrolyte cations (158a) arranged facing the surface of the polarized electrolyte solvent (158b) molecules adsorbed on the entire surface of the electrode layers (155b, 155c) of the first polarity double-sided electrode (155) and the charged cations, with the polarized electrolyte solvent (158b) molecules adsorbed on the entire surface of the electrode layers (155b, 155c) of the first polarity double-sided electrode (155) in between the electrode layers (155b, 155c) and the electrode layers (155c) of the first polarity double-sided electrode (155). The electrode layers (156b, 156c) of the second polarity double-sided electrode (156) formed and polarized are adsorbed on the entire surface of the electrode layers (156b, 156c) of the second polarity double-sided electrode (156) and arranged facing the surface of the polarized electrolyte solvent (158b) molecules with the reversely polarized electrolyte solvent (158b) molecules in between as a dielectric, and form a capacitor different from the charged electrolyte anions (158c), so that the electric field (180) between the polarized electrode and the charged anions is formed in mutually reverse directions on the electrode layers (156b) and electrode layers (156c) of the second polarity double-sided electrode (156), and as the electric field strengths cancel each other out over time, the electrolyte cations (158a) and the second polarity that were arranged facing the surface of the electrode layers (155b, 155c) of the first polarity double-sided electrode (155) due to the reduction in charge There is a problem in that the electrolyte anions (158c) arranged facing the surface of the electrode layers (156b, 156c) of the double-sided electrode (156) are each released and transitioned into a disordered random distribution state due to the discharge effect, which causes a large amount of self-discharge along with the Equivalent Series Resistance (ESR) of the electric double layer capacitor (150).
[0005] Such an electric double-layer capacitor (150) has a rated voltage of approximately 1.0V to 1.5V when the injected and filled electrolyte is a water-soluble electrolyte, and 2V to 3V when the electrolyte is an organic electrolyte. Since the function is lost when the voltage applied to the electrolyte layer exceeds the rated voltage, electrolysis of the electrolyte is induced, so in order to use a high voltage exceeding the rated voltage of the electrolyte, multiple electric double-layer capacitors (150) must be connected in series to enable high voltage usage. Although the electric double-layer capacitor (150) has a very large capacity compared to a general capacitor, it has a low capacity limit as a battery for storing electrical energy, with an energy density of approximately 5 to 7 Wh / kg. Furthermore, when multiple electric double-layer capacitors (150) are connected in series for high voltage usage, the capacity is further reduced in proportion to the number of electric double-layer capacitors (150) connected in series, similar to the characteristics of a general capacitor, so that the rated voltage of the electrolyte exceeds For the application of electric double-layer capacitors (150) to high-voltage and high-capacity energy storage devices, the example of FIG. 1b (in the case of 3 parallel connections and n serial connections, nS3P, 150) n,p A plurality of electric double layer capacitors (150) such as ) are connected to a high voltage and large capacity electric double layer capacitor module first polarity parallel conductive plate (120) and n-1 parallel / series connected conductive plates (1161, 1162, 1163, …, 116) on a circuit board (110). n-1 ) and high voltage and large capacity electric double layer capacitor module using second polarity parallel conductive plate (140) to parallel group 1 (150) of n parallel connection groups 1,1 ∥150 1,2 ∥150 1,3 ), parallel group 2(150 2,1 ∥150 2,2 ∥150 2,3 ), parallel group 3(150 3,1 ∥150 3,2 ∥150 3,3 ), … , parallel group n-1 (150 n-1,1 ∥150 n-1,2 ∥150n-1,3 ), parallel group n (150 n,1 ∥150 n,2 ∥150 n,3 n parallel groups are connected in series, forming ) (parallel group 1 – parallel group 2 – parallel group 3 – … – parallel group n-1 - Parallel army n It should be configured and used as a high-voltage and high-capacity electric double layer capacitor module (100) in which multiple electric double layer capacitors (150) required for a high-voltage and high-capacity energy storage device are connected in parallel and series.
[0006] When a high voltage and large capacity electric double layer capacitor module (100) is configured and used in which multiple electric double layer capacitors (150) are connected in parallel, the capacitance difference between parallel connection groups connected in parallel to increase the capacitance due to the high connection resistance increased by external connection terminals added for connecting each electric double layer capacitor (150) and the characteristic deviation of each electric double layer capacitor (150) which is inevitable during the manufacturing process increases in proportion to the number of parallel connections, the high voltage applied to both ends of the electric double layer capacitor module (100) is parallel group 1 (150) of a parallel connection group of multiple electric double layer capacitors (150) connected in series. 1,1 ∥150 1,2 ∥150 1,3 ), parallel group 2(150 2,1 ∥150 2,2 ∥150 2,3 ), parallel group 3(150 3,1 ∥150 3,2 ∥150 3,3 ), … , parallel group n-1 (150 n-1,1 ∥150 n-1,2 ∥150 n-1,3 ), parallel group n (150 n,1 ∥150 n,2 ∥150 n,3When a high voltage exceeding the rated voltage of the electrolyte is applied to a parallel-connected group of electric double-layer capacitors (150) that are not evenly divided and have relative capacitance characteristics degraded within the rated voltage range of the electrolyte of each electric double-layer capacitor (150), the internal pressure increases and deterioration occurs due to the gas generated as the electrolyte is electrolyzed and vaporized, or when a large current due to high voltage and large capacity is charged and discharged, heat generation is accompanied by increased resistance due to high connection resistance, and furthermore, when the characteristic deviation of each electric double-layer capacitor in the parallel-connected group exceeds a critical value due to the increase in added connection resistance, the flowing large current is concentrated in the electric double-layer capacitor (150) with relatively low resistance, and consequently, intensified heat generation and insulation breakdown and ignition of the porous separator (157) may be induced, so a balancing circuit for correcting deviation due to large current must be added to correct the deviation, and the added balancing circuit is for the large current of multiple electric double-layer capacitors (150). There is a problem in that the output, efficiency, and lifespan characteristics of the electrical energy storage device deteriorate as the charged electrical energy is consumed during the process of correcting the charge deviation and the charging time increases due to the correction of the charge deviation. Additionally, there is a problem in that the total capacitance value decreases in proportion to the increase in the number of parallel group series connections, and further decreases in proportion to the increase in the resistance of the parallel group and external connection connections.
[0007] To solve the problem of smoothing circuits for correcting deviations between electric double-layer capacitors (150) or the increase in high connection resistance between external connection terminals of electric double-layer capacitors (150), a bipolar double-sided electrode method in which double-sided electrodes with active material electrodes formed on both sides of a conductive substrate are alternately stacked with a separator can be used. A high-voltage electric double-layer capacitor with series connection can be implemented by utilizing double-sided electrodes and gaskets for this purpose (Korean Published Patent Application No. 10-2011-0035327 dated April 6, 2011; Korean Published Patent Application No. 10-2007-0081915 dated August 20, 2007; Japanese Published Patent Application No. Hei 18-294735 dated October 26, 2006), but there are limitations in precision and productivity for securing sealing performance by gaskets, and in order to increase capacity, a plurality of additional high-voltage The problem of having to separately connect electric double-layer capacitors in parallel externally remains, and to increase unit capacity, an electrode equipped with a separator that expands capacity by improving the ion mobility characteristics of the electrolyte instead of a separator (Korean Patent Publication No. 10-2018-0101285, disclosed September 12, 2018) is utilized, and a bifacial electrode equipped with at least one or more multiple separators and a sealing material are applied and cured to insulate each of the bifacial electrodes equipped with at least one or more multiple separators that are sequentially arranged, and a capacitor container (Korean Patent Publication No. 10-2022-0163215, disclosed December 9, 2022).Although it is possible to implement a high-voltage electric double layer capacitor with a series connection using the method disclosed above, there is a problem in that additional high-voltage electric double layer capacitors must be separately connected in parallel externally to increase the capacity, and there are difficulties in ensuring uniformity in the manufacturing process due to the characteristics of the separator and sealing material that mainly use liquid-type materials. In the conventional method, a sealing pattern layer (210) is formed around the outer edge of a separator (270) equipped with multiple direct passages (274) in a separator (272), and the ion mobility of the electrolyte (260) is improved by the direct passages (274) of the separator (270) equipped with multiple direct passages (274), thereby independently configuring electric double layer capacitors with improved characteristics, and on the front surface of the bipolar double-sided electrode conductive foil (252) of a bipolar double-sided electrode (250) in which at least two or more bipolar double-sided electrodes have improved characteristics. By utilizing a high-voltage electric double layer capacitor (200) (Korean Patent Publication No. 10-2024-0087107) that is internally connected in series to achieve high voltage, it is expected that the limitations of precision and productivity due to the gasket can be overcome. However, there are difficulties in forming a sealing pattern layer (210) of uniform thickness, and there are limitations in securing sealing due to fine pinhole passages caused in the sealing pattern layer (210). Furthermore, the problem remains that in order to increase the capacity, multiple high-voltage electric double layer capacitors must be additionally connected in parallel from the outside. Prior art literature
[0008] Korean Patent Publication No. 10-2024-0087107, published June 19, 2024; Korean Patent Publication No. 10-2022-0163215, published December 9, 2022; Korean Patent Publication No. 10-2018-0101285, published September 12, 2018; Korean Patent Publication No. 10-2011-0035327, published April 6, 2011; Korean Patent Publication No. 10-2007-0081915, published August 20, 2007; Japanese Patent Publication No. Hei 18-294735, published October 26, 2006. The problem to be solved
[0010] The present invention aims to solve the aforementioned conventional problems. The objective of the present invention is to continuously arrange in a manner such that a cross-sectional additional electrode, each having at least one or more multiple m-1 cross-sectional electrodes with at least one or more multiple s through-paths formed on the electrode layer surface of a cross-sectional electrode, is arranged facing a cross-sectional additional electrode conductive plate having a through-path, and a cross-sectional additional electrode conductive plate having a through-path of another cross-sectional additional electrode having a through-path is arranged facing a cross-sectional additional electrode having a through-path continuously on a cross-sectional additional electrode one-sided active material layer having a through-path, and a cross-sectional additional electrode conductive foil having another through-path of a cross-sectional additional electrode having a through-path is arranged facing a cross-sectional additional electrode having a through-path continuously on a cross-sectional additional electrode one-sided active material layer having a cross-sectional additional electrode having a through-path, and at least one or more multiple m-1 cross-sectional electrodes are arranged facing sequentially with the side wings of the cross-sectional electrode conductive plate of the cross-sectional electrode. A parallel terminal electrode having a side wing portion of each of the single-sided additional electrodes having a through-way is joined to a double-sided electrode sequentially arranged with one side and the other side of the electrode layer surface of each of the m-1 single-sided electrodes having at least one or more through-ways formed therein, and a single-sided additional electrode having a through-way having a conductive plate having a through-way having a through-way having a through-way having a parallel terminal electrode having a side wing portion of each single-sided additional electrode having a through-way having a through-way having a parallel terminal electrode and a double-sided electrode having a double-sided electrode having a through-way having a parallel terminal electrode having a side wing portion joined thereto having a side wing portion of each single-sided additional electrode having a through-way side wing portion of each single-sided additional electrode having a through-way having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion of each single-sided additional electrode having a side wing portion A cross-sectional additional electrode having at least one or more m-1 through-holes arranged sequentially facing the side portion of a double-sided electrode conductive plate, a cross-sectional additional electrode having at least one or more through-holes, a cross-sectional additional electrode having a side wing portion joined to each of the cross-sectional additional electrodes having a through-hole, a cross-sectional additional electrode having at least one or more m-1 through-holes arranged facing the side portion of the cross-sectional additional electrode having a through-hole, a cross-sectional additional electrode conductive plate having a through-hole having a cross-sectional additional electrode having a through-hole having another cross-sectional additional electrode having a through-hole continuously connected to the one-sided active material layer of the cross-sectional additional electrode having a through-holeA cross-sectional additional electrode conductive plate having a through-path is arranged facing each other, and a cross-sectional additional electrode conductive foil having a through-path of another cross-sectional additional electrode having a through-path is arranged facing each other continuously in a manner that is continuous with the cross-sectional additional electrode one-sided active material layer having a through-path of another cross-sectional additional electrode having a through-path, and another parallel terminal electrode having a cross-sectional additional electrode side wing portion having a through-path of each of the cross-sectional additional electrodes having a through-path that are sequentially arranged facing each other with the side wing portion of the cross-sectional electrode conductive plate of the cross-sectional electrode and the cross-sectional additional electrode having a cross-sectional additional electrode having a through-path of at least one or more multiple m-1 cross-sectional additional electrodes having a through-path is joined to a parallel terminal electrode mounting portion of a capacitor container having a slit, wherein the lower wing portion of the cross-sectional electrode conductive plate and the side wing portion of the cross-sectional electrode conductive plate are mounted, and to a capacitor container series / parallel connection electrode slit having at least one or more multiple n-1 slits A series-parallel connection electrode having a single-sided active material layer surface having an m-1th face-joined through-path is mounted separately from a series-parallel connection electrode mounted separately from a predetermined distance by the spacing between at least one or more multiple n-1 series-parallel connection electrodes and a capacitor container parallel terminal electrode mounting part equipped with another slit, each of which has a different single-sided electrode conductor plate lower wing and a single-sided electrode conductor plate side wing mounted thereon, and a capacitor container parallel terminal electrode mounting part equipped with a slit, and a capacitor container series-parallel connection electrode slit equipped with at least one or more multiple n-1 slits and a capacitor container parallel terminal electrode mounting part equipped with another slit. A single-sided auxiliary electrode having a through-path formed by the m-1st face-to-face bonding on the active material layer surface of a double-sided electrode forms a single-sided parallel electrode pair 1, and a single-sided auxiliary electrode having a through-path formed by the m-1st face-to-face bonding on the active material layer surface of a double-sided electrode of a series-parallel connection electrode is mounted separated from the single-sided auxiliary electrode having a through-path formed by the m-1st face-to-face bonding on the active material layer surface of a double-sided electrode of a series-parallel connection electrode and series-parallel connection electrode and is mountedA single-sided auxiliary electrode having an m-1st face-bonded through-path on the active material layer surface of another double-sided electrode of another series-parallel connection electrode forms a single-sided parallel electrode pair 3, thereby sequentially forming a single-sided parallel electrode pair, and a single-sided auxiliary electrode having an m-1st face-bonded through-path on the active material layer surface of a single-sided electrode of the n-2nd series-parallel connection electrode mounted separately at a predetermined distance from the single-sided auxiliary electrode having an m-1st face-bonded through-path on the active material layer surface of another double-sided electrode of the n-1st series-parallel connection electrode mounted separately at a predetermined distance from the single-sided auxiliary electrode having an m-1st face-bonded through-path on the active material layer surface of another single-sided active material electrode of the n-1st series-parallel connection electrode mounted separately at a predetermined distance from the single-sided auxiliary electrode having an m-1st face-bonded through-path on the active material layer surface of the double-sided electrode of the n-1st series-parallel connection electrode mounted separately at a predetermined distance A cross-sectional additional electrode one-sided active material layer surface having an m-1st face-joined through-path of a parallel terminal electrode forms a cross-sectional parallel electrode pair n, thereby forming at least one or more multiple n cross-sectional parallel electrode pairs, and a slit-equipped capacitor container is covered such that the upper wing of the cross-sectional electrode conductive plate of the parallel terminal electrode is mounted on the slit-equipped capacitor container parallel terminal electrode mounting part, the upper wing of the double-sided electrode conductive plate of at least one or more multiple n-1 series-parallel connection electrodes is mounted on the at least one or more series-parallel connection electrode slit of the capacitor container parallel terminal electrode, and the upper wing of the cross-sectional electrode conductive plate of another parallel terminal electrode is mounted on the other slit-equipped capacitor container parallel terminal electrode mounting part, and the slit-equipped capacitor container and When an electrolyte is injected through an individual electrolyte injection port into each of at least one plurality of n single-sided parallel electrode pairs, which are formed by being separated and sealed by a capacitor lid equipped with a slit, and then sealed, each of at least one plurality of n single-sided parallel electrode pairs is electrically separated, and at least one plurality of n single-sided parallel electrode pairs are connected in series by a series-parallel connecting electrode, and by significantly reducing the physical resistance to the movement of anions and cations of the electrolyte injected into each single-sided parallel electrode pair to improve ion movement, the charged ions of the electrolyte solvent molecules adsorbed on the surface of the active material particles of the electrodeIn addition to the effect of increasing capacitance capacity due to the improvement of the effective area of the electric double layer resulting from an increase in the number (Korean Published Patent Application No. 10-2018-0101285, dated September 12, 2018), the front surface facing each pair of single-sided parallel electrodes is improved to enable ion movement, thereby further increasing the capacitance capacity; by parallel connecting single-sided additional electrodes equipped with at least one or more m-1 through-paths, a parallel terminal electrode with a greatly expanded electrode area, a series-parallel connected electrode, a capacitor container equipped with an electrode slit, and a lid equipped with an electrode slit, it is possible to drive a high-voltage rated voltage exceeding the general rated voltage and capacity limited by the rated voltage of the electrolyte and the capacity proportional to the area of a single electrode pair, and to significantly expand the capacitance capacity through the series connection of at least one or more n pairs of single-sided parallel electrodes and at least one or more m (at least one or more m-1) The present invention provides a low self-discharge high voltage and high capacity electric double layer capacitor that minimizes self-discharge caused by electric field cancellation by configuring a single-sided electrode with a through-path and a single-sided electrode, a single-sided electrode with at least one or more m-1 through-paths and a double-sided electrode with another single-sided electrode and a double-sided electrode with at least one or more m-1 through-paths in parallel (nSmP), and by connecting each of the single-sided electrode, the double-sided electrode with another single-sided electrode, the double-sided electrode with a double-sided electrode and another single-sided electrode with at least one or more m-1 through-paths in parallel so that the electric field direction between the cations and anions of the electrolyte induced by charging on the electrode surface of each of the n pairs of parallel electrodes that become polarized according to charging is formed and superimposed in the same direction. means of solving the problem
[0011] To achieve the above objectives, the low self-discharge high-voltage and high-capacity electric double layer capacitor of the present invention comprises: a capacitor container equipped with a slit; and a capacitor container parallel terminal electrode mounting portion equipped with slits at both ends of the left side and the other right side of the capacitor container equipped with the slit. A cross-sectional additional electrode having at least one or more m-1 or more s through-paths formed on each cross-sectional electrode electrode layer surface is arranged facing each other, and a cross-sectional additional electrode conductive plate having another through-path is arranged facing each other continuously with the cross-sectional additional electrode one-sided active material layer having a through-path and the cross-sectional additional electrode one-sided active material layer having a through-path, and a cross-sectional additional electrode conductive foil having yet another through-path is arranged facing each other continuously with the cross-sectional additional electrode one-sided active material layer having a through-path and the cross-sectional additional electrode having another through-path, and the cross-sectional additional electrode side wing portion having a through-path of each of the cross-sectional additional electrodes having at least one or more m-1 through-paths arranged facing each other is joined. A left-side parallel terminal electrode of a capacitor container equipped with a slit, wherein the side wing of the cross-sectional electrode conductive plate and the lower wing of the cross-sectional electrode conductive plate are connected and respectively mounted in close contact; and a right-side parallel terminal electrode; and at least one or more n-1 series-parallel connection electrode slits of a capacitor container equipped with a slit, which are formed at a predetermined distance from the mounting portion of the left-side parallel terminal electrode of the capacitor container equipped with a slit of the capacitor container equipped with a slit, and are formed sequentially at a predetermined distance from each of them, and are also formed at a predetermined distance from the mounting portion of the right-side parallel terminal electrode of the capacitor container equipped with a slit of the capacitor container equipped with a slit. A single-sided additional electrode having at least one or more m-1 through-paths is arranged facing each electrode layer surface of one side and the other side of a double-sided electrode, and a single-sided additional electrode conductive plate having through-paths is arranged facing each, and a single-sided additional electrode conductive plate having through-paths of another single-sided additional electrode having through-paths is arranged facing continuously to the single-sided additional electrode active material layer having through-paths, and the single-sided additional electrode having another through-pathA method in which a conductive foil of a cross-sectional additional electrode having a through-path is arranged facing another cross-sectional additional electrode having a through-path continuously in a manner that is continuous with the active material layer of a cross-sectional additional electrode having a through-path, and each of the n-1 series-parallel connection electrodes, in which a wing of the side portion of the cross-sectional additional electrode having a through-path and a wing of the lower portion of the double-sided electrode conductive plate are inserted and fastened by being joined to the wing portion of the cross-sectional additional electrode having a through-path that is joined to the wing portion of the cross-sectional additional electrode having a through-path that is sequentially arranged facing the side portion of the double-sided electrode conductive plate, wherein the wing of the side portion of the double-sided electrode conductive plate and the wing of the lower portion of the double-sided electrode conductive plate are inserted and fastened; are sequentially inserted and closely arranged so as to the other side portion of the active material layer of the double-sided electrode of the series-parallel connection electrode that is inserted facing and separated at a predetermined distance from the surface of the active material layer of the cross-sectional additional electrode having a through-path that is joined to the m-1st surface of the parallel terminal electrode mounted on the left side of the capacitor container equipped with the slit. A cross-sectional parallel electrode pair 1 is formed in which the cross-sectional additional electrode one-sided active material layer surface, equipped with the m-1st opposing through-path, is physically separated and facing each other, and a cross-sectional parallel electrode pair 2 is formed in which the cross-sectional additional electrode one-sided active material layer surface, equipped with the m-1st opposing through-path, is sequentially separated and inserted facing each other at a predetermined distance from the cross-sectional additional electrode one-sided active material layer surface, equipped with the m-1st opposing through-path, is inserted facing each other, and the m-1st of the cross-sectional additional electrode one-sided active material layer surface, equipped with the m-1st opposing through-path, is inserted facing each other at the cross-sectional additional electrode one-sided active material layer surface, equipped with the m-1st opposing through-path, is sequentially separated and inserted facing each other at a predetermined distance from the cross-sectional additional electrode one-sided active material layer surface, equipped with the m-1st opposing through-path, is inserted facing each other, and A method in which a pair of parallel electrodes 3 is formed in which a single-sided auxiliary electrode with a through-path joined facing each other and a single-sided active material layer face facing each other are physically separated and formed, thereby sequentially forming a required number of pairs of parallel electrodes, and the m-1st pair of parallel electrodes joined facing each other is inserted sequentially at a predetermined distance apart from the single-sided active material layer face of the m-1st single-sided auxiliary electrode with a through-path joined facing each other and a single-sided active material layer face of the n-1st series-parallel connection electrode, the double-sided electrode of the n-1st series-parallel connection electrode, is joined facing each other and is inserted separately on the other side active material layer face of the active material layer face of the active material layer face of the active material layer face of the active material layer face facing each other.A cross-sectional additional electrode surface with a through-hole and a single active material layer surface are physically separated to form a cross-sectional parallel electrode pair n-1, and a cross-sectional additional electrode surface with a through-hole and a single active material layer surface on the right side, which is inserted facing and separated from the m-1st side active material layer surface of the double-sided electrode of the n-1 series-parallel connected electrode at a predetermined distance, is physically separated to form a cross-sectional parallel electrode pair n, wherein a capacitor lid with a slit; the upper wing of the conductive plate of the left side parallel terminal electrode of the capacitor container with a slit is fastened to and closely mounted on the left side slit capacitor lid parallel terminal electrode mounting part; and the at least one or more of the n-1 At least one or more n-1 series / parallel connection electrode upper plate wings disposed in the series / parallel connection electrode slits of a capacitor container equipped with slits are sequentially inserted into and closely positioned respectively in the series / parallel connection electrode slits of a capacitor lid equipped with at least one or more n-1 slits; and the upper plate wings of the parallel terminal electrode conductive plates on the other right side of the capacitor container equipped with slits are fastened to and closely positioned in the parallel terminal electrode mounting portion of the capacitor lid equipped with slits on the other right side of the capacitor lid equipped with slits, thereby closing so that each of the n pairs of single-sided parallel electrodes is individually sealed, and electrolyte is individually filled into each of the n pairs of single-sided parallel electrodes through an electrolyte injection port (not shown) so that each of the n pairs of single-sided parallel electrodes is physically separated and electrically separated, but is configured to be connected as cations and anions of the electrolyte move and electrostatically charge the parallel electrodes. A high voltage n times the rated voltage of the electrolyte (rated voltage of the electrolyte × n) can be applied to both ends of the parallel terminal electrodes on the left side and the other right side of the electric double layer capacitor container and the electric double layer capacitor lid, and the capacitance is increased by a cross-sectional additional electrode having at least one or more m through passages in the parallel terminal electrodes on the left and right sides and the n-1 series-parallel connected electrodes, and physically by a capacitor container equipped with a slit and a capacitor lid equipped with a slitThe low self-discharge high voltage and high capacity electric double layer capacitor is characterized by being configured such that high voltage is achieved by a series connection of n pairs of single-sided parallel electrodes having additional capacity increase characteristics, thereby effectively improving output characteristics by eliminating ion movement resistance associated with the use of a conventional separator, and by a parallel connection of a single-sided additional electrode having m-1 through-paths, thereby achieving n series m parallel (nSmP) high voltage and high capacity. Each of the single-sided electrode, the double-sided electrode, the other single-sided electrode, the double-sided electrode, and the other single-sided electrode is connected in parallel with at least one single-sided additional electrode having m-1 through-paths, so that the electric field direction between the cations and anions of the electrolyte induced by charging on the electrode surfaces of each of the n pairs of single-sided parallel electrodes, which become polarized according to charging, is formed in the same direction and overlapped, thereby minimizing self-discharge caused by electric field cancellation. Effects of the invention
[0012] The low self-discharge high voltage and high-capacity electric double layer capacitor according to the present invention is configured such that, after n individual pairs of single-sided parallel electrodes are separated and isolated by a capacitor container equipped with a slit and a capacitor lid equipped with a slit, an electrolyte is injected and sealed to prevent high voltage from being applied to the electrolyte of each of the n individual pairs of facing single-sided parallel electrodes, and is arranged to be electrically separated and continuously connected in series, while the ion movement of the electrolyte utilizes the front surface of the facing electrode and the shortest penetration path as the ion movement region compared to tunnel-shaped ion channels formed by overlapping pores within the separator using a conventional separator, and the electric double layer formed by ions densely clustered facing the active material surface after being charged by the polarization of electrolyte solvent molecules adsorbed on the front surface of the active material where the active material electrode and the electrolyte come into contact, thereby increasing the effective area of the electric double layer, the active material surface electrode area, the electrolyte solvent molecule size and permittivity, and the capacitance formed by the effective area of the electric double layer. By significantly increasing the capacitance through the effect of increasing the active material surface electrode area due to the parallel connection effect of a single-sided additional electrode equipped with at least one of m-1 through-paths of a parallel terminal electrode and a series-parallel connection electrode, the capacity can be easily realized for each of n pairs of single-sided parallel electrodes. Additionally, the front surface of the double-sided electrode of the series-parallel connection electrode implements a series connection function for high voltage formation, thereby reducing the number of electrodes required for forming a high-voltage electric double layer capacitor via conventional external connection to half the level. Furthermore, for external connection, a tab, lead wire,Since the front surfaces of the double-sided electrodes of the series-parallel connection electrodes form a direct series connection without high connection resistance such as connecting circuit boards, even if instantaneous voltage deviations are induced by characteristic deviations between each face-to-face single-sided parallel electrode pair during charging and discharging, the self-balancing effect due to the low resistance characteristics of the double-sided electrodes of the series-parallel connection electrodes—which are a closed system without external connections—eliminates capacitance deviations between each single-sided parallel electrode pair without a separate balance circuit. In the case of high-voltage and high-current systems where multiple conventional electric double-layer capacitor cells are connected in series by external connection lines, the inherent high-output characteristics of the electric double-layer capacitor were limited by the smoothing circuits added separately to resolve characteristic deviations between each electric double-layer capacitor cell; however, high-output characteristics can be significantly improved through ion movement on the front surfaces of the face-to-face single-sided parallel electrode pairs and the self-balancing effect caused by the double-sided electrodes of the series-parallel connection electrodes, and the single-sided electrode, By connecting a single-sided electrode, a double-sided electrode, a single-sided electrode, and a single-sided electrode, each having at least one or more m-1 through-paths, in parallel with each of the n pairs of parallel-sided electrodes that become polarized according to charging, the electric field directions between the cations and anions of the electrolyte induced by charge on the electrode surfaces of each pair are formed and superimposed in the same direction, thereby minimizing self-discharge caused by electric field cancellation. Additionally, by simultaneously achieving the effects of sealing the electrolyte and separating the pairs of parallel electrodes facing each other using a capacitor container and a capacitor lid equipped with slits, durability, assembly, and ease of manufacturing are provided, thereby reducing manufacturing process steps and enabling production cost reduction. Brief explanation of the drawing
[0013] FIG. 1a is a schematic diagram of a conventional electric double layer capacitor configuration. FIG. 1a1 is a schematic plan view of a conventional electric double layer capacitor winding electrode. FIG. 1a2 is an enlarged view of one region (A in FIG. 1a1) of a schematic planar diagram of a conventional electric double layer capacitor winding electrode. FIG. 1a3 is a schematic planar diagram of a conventional electric double layer capacitor winding electrode and a charge state diagram of one region (A in FIG. 1a1). FIG. 1b is a schematic diagram of a high-voltage and high-capacity electric double layer capacitor module in which a plurality of conventional electric double layer capacitors are connected in series and parallel. FIG. 2a is a schematic structural diagram of an internal series-face-to-face junction high-voltage electric double layer capacitor using a plurality of bipolar double electrodes. FIG. 3a1 is a conceptual diagram of a low self-discharge high-voltage and high-capacity electric double layer capacitor according to an embodiment of the present invention. FIG. 3a2 is a conceptual charge state diagram of a low self-discharge high-voltage and high-capacity electric double layer capacitor according to an embodiment of the present invention. FIG. 3b1 is a schematic diagram of a low self-discharge high-voltage and high-capacity electric double layer capacitor according to an embodiment of the present invention. FIG. 3b2 is a planar internal structure diagram of a low self-discharge high-voltage and high-capacity electric double layer capacitor according to an embodiment of the present invention. FIG. 3c1 is a planar structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor container according to an embodiment of the present invention. FIG. 3c2 is a left side structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor container according to an embodiment of the present invention. FIG. 3c3 is a right-side structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor container according to an embodiment of the present invention. FIG. 3c4 is a front structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor container according to an embodiment of the present invention. FIG. 3c5 is a rear structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor container according to an embodiment of the present invention. FIG. 3d1 is a planar structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor lid according to an embodiment of the present invention. FIG. 3d2 is a left side structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor lid according to an embodiment of the present invention. FIG. 3d3 is a structural diagram of the right side of a lid for a low self-discharge high-voltage and high-capacity electric double-layer capacitor according to an embodiment of the present invention. FIG. 3d4 is a front structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor lid according to an embodiment of the present invention. FIG. 3d5 is a rear structural diagram of a low self-discharge high-voltage and high-capacity electric double-layer capacitor lid according to an embodiment of the present invention. FIG. 3e is a schematic diagram of a cross-sectional electrode according to an embodiment of the present invention. FIG. 3f is a schematic diagram of a cross-sectional additional electrode having a through-path according to an embodiment of the present invention. FIG. 3g is a schematic diagram of a parallel terminal electrode having a cross-sectional additional electrode having a plurality of through-paths according to an embodiment of the present invention, arranged and connected in a face-to-face manner to a cross-sectional electrode active material layer. FIG. 3h is a schematic diagram of a double-sided electrode according to an embodiment of the present invention. FIG. 3i is a schematic diagram of a series-parallel connected electrode in which a cross-sectional additional electrode having a plurality of through-paths according to an embodiment of the present invention is arranged and connected facingly to each of a double-sided electrode's one-sided active material layer and another-sided active material layer. Specific details for implementing the invention
[0014] A high-voltage and high-capacity electric double-layer capacitor according to an embodiment of the present invention will be described below with reference to the attached drawings. The configurations shown in the drawings are conceptual diagrams intended to explain the concept of the present invention, and descriptions of known technologies are omitted from the description of the configurations.
[0015] The embodiments of the present invention are provided to more fully explain the invention to those with average knowledge in the art. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated or reduced for clearer explanation.
[0016] As shown in FIG. 3a1 and FIG. 3a2, the basic concept of a low self-discharge high-voltage and high-capacity electric double layer capacitor according to the present invention is configured such that a cross-sectional additional electrode (3401, 3402, 3403, 3404) having a through-path in a cross-sectional electrode (3321, 3322) is sequentially arranged and connected to form a parallel terminal electrode (3301, 3302), and the cross-sectional parallel electrode pair is formed by facing each other. As charging occurs, the first parallel terminal electrode (3301) becomes negatively polarized and the second parallel terminal electrode (3302) becomes positively polarized, thereby inducing a charge between the positive ions (362) and negative ions (366) of the electrolyte (360) formed on the surface of the parallel terminal electrode (3301, 3302) and the positive ions charged on the negatively polarized cross-sectional electrode. The electric field (372), the electric field (370) superimposed on a negatively polarized parallel terminal electrode formed by the superposition of the electric field (372) and the electric field (3741, 3742) charged on a cross-sectional additional electrode equipped with a negatively polarized through-path, and the electric field (380) superimposed on a positively polarized parallel terminal electrode formed by the superposition of the electric field (382) charged on a positively polarized cross-sectional electrode and the electric field (3841, 3842) charged on a cross-sectional electrode equipped with a positively polarized through-path, are superimposed in the same direction, thereby having the effect of significantly reducing self-discharge due to electric field cancellation in a conventional electric double-layer capacitor composed of double-sided electrodes.
[0017] As shown in FIG. 3b1, the low self-discharge high voltage and large capacity electric double layer capacitor (300) according to the present invention comprises a parallel terminal electrode (3301) on one side, a parallel terminal electrode (3302) on the other side, and n-1 series-parallel connected electrodes (3501, 3502, 3503, …, 350) which are at least one or more. n-2 , 350 n-1 It consists of an electric double layer capacitor container (310) with a slit and an electric double layer capacitor lid (320) with a slit.
[0018] The above parallel terminal electrode (330) is arranged so that a cross-sectional additional electrode (340) having at least one or more through-holes is in contact with the cross-sectional electrode active material layer (332d) of the cross-sectional electrode (332) as in FIG. 3e, 3f, and 3g, but in the case where a cross-sectional additional electrode (3401, 3402, 3403, 3404, 3405) having five through-holes is arranged to be in contact as in the example of FIG. 3g, the cross-sectional additional electrode conductive foil (3401a) having a through-hole of the cross-sectional additional electrode (3401) having a first through-hole is arranged to be in contact with the cross-sectional electrode active material layer (332d) of the cross-sectional electrode (332), and the cross-sectional additional electrode (3401) having a first through-hole A cross-sectional additional electrode conductive foil (3402a) having a through-path of a cross-sectional additional electrode (3402) having a second through-path is arranged to be in contact with a cross-sectional additional electrode (3401b) having a through-path of a cross-sectional additional electrode (3402) having a second through-path, and a cross-sectional additional electrode conductive foil (3403a) having a through-path of a cross-sectional additional electrode (3403) having a third through-path is arranged to be in contact with a cross-sectional additional electrode (3402b) having a through-path of a cross-sectional additional electrode (3403) having a third through-path, and a cross-sectional additional electrode conductive foil (3404a) having a through-path of a cross-sectional additional electrode (3404) having a fourth through-path is arranged to be in contact with a cross-sectional additional electrode (3403b) having a through-path of a cross-sectional additional electrode (3403) having a third through-path. A cross-sectional additional electrode (3404) having a fourth through-way is arranged to be in contact with a cross-sectional additional electrode (3405) having a fifth through-way and a cross-sectional additional electrode conductive foil (3405a) having a fifth through-way is arranged to be in contact with the cross-sectional additional electrode (3405) having a fifth through-way and the cross-sectional additional electrode conductive plate side wing (332e) on the left and right sides of the cross-sectional electrode (332) and each of the cross-sectional additional electrode (3401) having a first through-way, the cross-sectional additional electrode (3402) having a second through-way, the cross-sectional additional electrode (3403) having a third through-way, the cross-sectional additional electrode (3404) having a fourth through-way, and the cross-sectional additional electrode (3405) having a fifth through-way A cross-sectional additional electrode conductive plate having a through-hole (3401a, 3402a, 3403a, 3404a,3405a) It is achieved by electrically joining the left and right side edges to create a parallel connection.
[0019] The above series-parallel connected electrode (350) is arranged so as to be in contact with a single-sided additional electrode (340) having at least one or more through-holes on each of the two-sided electrode other side active material layer (352a) and the two-sided electrode one side active material layer (352d) of the two-sided electrode (352), as shown in FIG. 3f, 3h, and 3i, wherein the single-sided additional electrode (340) having five left through-holes on the two-sided electrode other side active material layer (352a) as in the example of FIG. 3i L1 , 340 L2 , 340 L3 , 340 L4 , 340 L5 ) and a single-sided additional electrode (340) having 5 right through-holes in the double-sided electrode one-sided active material layer (352d) R1 , 340 R2 , 340 R3 , 340 R4 , 340 R5 When ) are arranged to face each other, a cross-sectional additional electrode (340) having a left-side first through-path on the other side active material layer (352a) of the double-sided electrode (352) L1 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) L1 a) A cross-sectional additional electrode (340) arranged to be in contact with the above-mentioned first through passage on the left L1 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) L1 b) A cross-sectional additional electrode (340) having a second through-path on the left side L2 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) L2 a) A cross-sectional additional electrode (340) arranged to be in contact with the above-mentioned second through-way on the left L2 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) L2 b) A cross-sectional additional electrode (340) having a third through-way from the left. L3 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) L3 a) A cross-sectional additional electrode (340) arranged to be in contact with the above-mentioned third through-way on the leftL3 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) L3 b) A cross-sectional additional electrode (340) having a fourth through-way on the left side L4 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) L4 a) A cross-sectional additional electrode (340) arranged to be in contact with the above-mentioned fourth through-way on the left L4 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) L4 b) A cross-sectional additional electrode (340) having a fifth through-way from the left. L5 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) L5 a) A cross-sectional additional electrode (340) arranged to face each other and having a right first through-way on the surface of the double-sided electrode one-sided active material layer (352d) of the double-sided electrode (352). R1 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) R1 a) A cross-sectional additional electrode (340) arranged to be in contact with the above right first through passage. R1 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) R1 b) A cross-sectional additional electrode (340) having a second through-way on the right side R2 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) R2 a) A cross-sectional additional electrode (340) arranged to be in contact with the above right second through passage. R2 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) R2 b) A cross-sectional additional electrode (340) having a third through-way on the right side R3 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) R3 a) A cross-sectional additional electrode (340) arranged to be in contact with the above right third through-way. R3 A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) R3 b) A cross-sectional additional electrode (340) having a fourth through-way on the right side R4 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) R4 a) A cross-sectional additional electrode (340) arranged to be in contact with the above right fourth through-way. R4A cross-sectional additional electrode one-sided active material layer (340) having a penetration path of ) R4 b) A cross-sectional additional electrode (340) having a fifth through-way on the right side R5 A cross-sectional additional electrode conductive foil (340) having a penetration path of ) R5 a) arranged so as to be in contact with the left and right side double-sided electrode conductive plate side wings (352e) of the above double-sided electrode (352) and the left first through passage, and the cross-sectional additional electrode (340) having the above-mentioned first through passage L1 ), a cross-sectional additional electrode (340) having the second through-hole on the left side above L2 ), a cross-sectional additional electrode (340) having the third through-way on the left side above L3 ), the cross-sectional additional electrode (340) having the fourth through-way on the left side above L4 ), the cross-sectional additional electrode (340) having the fifth through-way on the left side above L5 ), a cross-sectional additional electrode (340) having the first through-hole on the right side above R1 ), a cross-sectional additional electrode (340) having the second through-hole on the right side above R2 ), a cross-sectional additional electrode (340) having the third through-way on the right side above R3 ), a cross-sectional additional electrode (340) having the fourth through-hole on the right side above R4 ), a cross-sectional additional electrode (340) having the fifth through-way on the right side above R5 ) Each cross-sectional additional electrode conductive plate (340) equipped with a through-hole L5 c, 340 L4 c, 340 L3 c, 340 L2 c, 340 L1 c, 340 R1 c, 340 R2 c, 340 R3 c, 340 R4 c, 340 R5 c) It is achieved by electrically joining the left and right side edges to create a parallel connection.
[0020] As shown in FIG. 3f, the cross-sectional additional electrode (340) having a through-path is configured such that a cross-sectional additional electrode one-sided active material layer (340b) having a through-path is formed on one side of a cross-sectional additional electrode conductive plate (340a) having a through-path, and at least one or more cross-sectional additional electrode through-paths (340d) having a plurality of through-paths are formed by penetrating the cross-sectional additional electrode one-sided active material layer (340b) having a through-path and the cross-sectional additional electrode conductive plate (340a) having a through-path.
[0021] As shown in FIG. 3C1 to FIG. 3C5, the capacitor container (310) equipped with the above slit is composed of a capacitor container lower part (318) equipped with the slit, a capacitor container side part (314) equipped with the slit at the left and right edges of the capacitor container lower part (318) equipped with the slit, and a capacitor container parallel terminal mounting part (316) equipped with the slit at each of the lower left and right sides of the capacitor container side part (314) equipped with the slit, and as shown in FIG. 3C1, the capacitor container lower part (318) equipped with the slit is composed of n-1 lower slit-equipped capacitor container series / parallel connection electrode slits (312). B1 , 312 B2 , 312 B3 , … , 312 Bn-2 , 312 Bn-1 ) is formed and provided at a predetermined interval, and as shown in FIG. 3c2 and FIG. 3c3, the left side of the capacitor container lower part (318) equipped with the slit and the side part (314) of the capacitor container equipped with the slit are provided. L A capacitor container series / parallel connection electrode slit (312) equipped with at least one or more n-1 left-side slits. L1 , 312 L2 , 312 L3 , … , 312 Ln-2 , 312 Ln-1 ) The capacitor container side portion (314) equipped with a right-side slit R A capacitor container series-parallel connection electrode slit (312) equipped with at least one or more n-1 right-side slits. R1 , 312 R2 , 312R3 , … , 312 Rn-2 , 312 Rn-1 ) are formed at a predetermined interval and are each provided, and as shown in FIG. 3c4, the capacitor container side portion (314) having a slit on the left side of the capacitor container lower portion (318) having the slit is provided. L ) and a capacitor container side portion (314) equipped with a slit on the right side R ) A lower part of the container (318) having the above slit at each lower part and a capacitor container side part (314) having a left side slit of the lower part of the container (318) having the above slit L ) and a capacitor container side portion (314) equipped with a right-side slit R A capacitor container parallel terminal electrode mounting part (316) on the front of the capacitor container (310) equipped with the slit, which is formed by protruding by a predetermined distance compared to ) 1L , 316 1R ), as shown in FIG. 3c5, the side portion (314) of the capacitor container equipped with a slit on the left side of the lower portion (318) of the capacitor container equipped with the slit. R ) and a capacitor container side portion (314) equipped with a slit on the right side L ) A lower part of the container (318) having the above slit at each lower part and a side part of the capacitor container (314) having the above slit on the left side of the lower part of the capacitor container (318) having the above slit R ) and a capacitor container side portion (314) equipped with a right-side slit L A capacitor container parallel terminal electrode (316) having a second slit on the rear surface of the capacitor container (310) having a slit formed by protruding by a predetermined distance compared to ) 2L , 316 2R It is composed of a capacitor container parallel terminal electrode mounting part (316) equipped with the first slit as shown in FIG. 3c4. 1L , 316 1R ), the lower part (318) of the capacitor container equipped with the above slit and the side parts (314) of the capacitor container equipped with the above slit on the left and right of the lower part (318) of the capacitor container equipped with the above slit L , 314 RThe first parallel terminal electrode (3321) is mounted and secured to the first parallel terminal electrode mounting portion (3321) formed on the front of the capacitor container (310) equipped with the slit, and as shown in FIG. 3c5, the capacitor container parallel terminal electrode mounting portion (316) equipped with the second slit 2L , 316 2R ), the lower part (318) of the capacitor container equipped with the above slit and the side parts (314) of the capacitor container equipped with the above slit on the left and right of the lower part (318) of the capacitor container equipped with the above slit R , 314 L The second parallel terminal electrode (3322) is mounted and secured to the mounting portion of the second parallel terminal electrode (3322) formed on the rear surface of the capacitor container (310) equipped with the slit, and as shown in FIGS. 3C1 to 3C3, the capacitor container series / parallel connection electrode slit (312) equipped with at least one or more n-1 lower slits of the lower portion (318) of the capacitor container equipped with the slit B1 , 312 B2 , 312 B3 , … , 312 Bn-2 , 312 Bn-1 ), the lower part (318) of the capacitor container equipped with the above slit, the left side part of the capacitor container equipped with the slit, and the side part (314) of the capacitor container equipped with the above slit L A capacitor container series / parallel connection electrode slit (312) equipped with at least one or more n-1 left-side slits. L1 , 312 L2 , 312 L3 , … , 312 Ln-2 , 312 Ln-1 ) and the right side of the capacitor container lower part (318) equipped with the slit and the side part (314) of the capacitor container equipped with the slit R A capacitor container series-parallel connection electrode slit (312) equipped with at least one or more n-1 right-side slits. R1 , 312 R2 , 312 R3 , … , 312 Rn-2 , 312 Rn-1A capacitor container series-parallel connection electrode slit (3121, 3122, 3123, …, 312) equipped with at least one or more multiple n-1 slits, each formed by being composed of ) n-2 , 312 n-1 A capacitor container series-parallel connection electrode slit (3121, 3122, 3123, …, 312) configured and formed, and equipped with at least one or more n-1 multiple slits. n-2 , 312 n-1 n-1 series-parallel connected electrodes (3501, 3502, 3503, …, 350) sequentially in ) at least one or more multiples n-2 , 350 n-1 A cross-sectional additional electrode (340) having at least one or more through passages on the cross-sectional electrode active material layer (332d) surface of the cross-sectional electrode (332) of the first parallel terminal electrode (3321) is inserted and connected, and the surface in which the first parallel terminal electrode (3321) is connected in parallel with the first parallel electrode (332) · A cross-sectional additional electrode (340) having at least one or more through passages on the surface of the other side active material layer (352a) of the double-sided electrode (352) of the parallel connection electrode (3501) is arranged facing each other at a predetermined interval to form a cross-sectional parallel electrode pair 1, and the first side · The surface to which a cross-sectional additional electrode (340) having at least one or more through passages is parallel connected to the surface of the double-sided electrode (352) of the double-sided electrode (352) of the parallel connection electrode (3501) and the double-sided electrode one-sided active material layer (352d) is the second side · A cross-sectional additional electrode (340) having at least one or more through passages on the surface of the other side active material layer (352a) of the double-sided electrode (352) of the parallel connection electrode (3502) is arranged facing each other at a predetermined interval to form a cross-sectional parallel electrode pair 2, and the first side · The two-sided electrode (352) of the two-sided electrode (352) of the parallel connection electrode (3501) is formed to be isolated from the above-mentioned single-sided parallel electrode pair 1 by means of the two-sided electrode conductive plate (352c), the two-sided electrode conductive plate side wing (352e), and the two-sided electrode conductive plate lower wing (352f), and the second direct ·The surface on which a cross-sectional additional electrode (340) having at least one or more through passages is parallel connected to the surface of the double-sided electrode (352) of the double-sided electrode (352) of the parallel connection electrode (3502) and the double-sided electrode one-sided active material layer (352d) is the third side · A cross-sectional additional electrode (340) having at least one or more through passages on the surface of the other side active material layer (352a) of the double-sided electrode (352) of the parallel connection electrode (3503) is arranged facing each other at a predetermined interval to form a cross-sectional parallel electrode pair 3, and the second side · The parallel connection electrode (3502) is formed to be isolated from the cross-sectional parallel electrode pair 2 by means of the double-sided electrode conductive plate (352c), the double-sided electrode conductive plate side wing (352e), and the double-sided electrode conductive plate lower wing (352f) of the double-sided electrode (352), and the third electrode is formed by means of the double-sided electrode conductive plate (352) of the parallel connection electrode (3502). · The surface on which a cross-sectional additional electrode (340) having at least one or more through passages is parallel connected to the surface of the double-sided electrode (352) of the double-sided electrode (352) of the parallel connection electrode (3503) and the double-sided electrode one-sided active material layer (352d) is the fourth side · A cross-sectional additional electrode (340) having at least one or more through passages on the surface of the other side active material layer (352a) of the double-sided electrode (352) of the parallel connection electrode (3504) is arranged facing each other at a predetermined interval to form a cross-sectional parallel electrode pair 4, and the third side · The n-2nd parallel electrode pair is continuously formed by being isolated from the above-mentioned single-sided parallel electrode pair 3 by the double-sided electrode conductive plate (352c), the double-sided electrode conductive plate side wing (352e), and the double-sided electrode conductive plate lower wing (352f) of the double-sided electrode (352) of the parallel connection electrode (3503). · Parallel connection electrode (350 n-2 The surface on which a cross-sectional additional electrode (340) having at least one or more through passages is parallel connected to the surface of the double-sided electrode one-sided active material layer (352d) of the double-sided electrode (352) is the n-1th parallel · Parallel connection electrode (350 n-1A side-side additional electrode (340) having at least one or more through passages on the other side active material layer (352a) of the double-sided electrode (352) is arranged facing each other at a predetermined interval to form a side-side parallel electrode pair n-1, and the n-2nd side · Parallel connection electrode (350 n-2 The double-sided electrode (352) of the ) is formed to be isolated from the previously formed single-sided parallel electrode pair n-2 (not shown) by the double-sided electrode conductive plate (352c), the double-sided electrode conductive plate side wing (352e), and the double-sided electrode conductive plate lower wing (352f), and the n-1th direct · Parallel connection electrode (350 n-1 A side surface in which a cross-sectional additional electrode (340) having at least one or more through-holes on the surface of the one-sided active material layer (352d) of the double-sided electrode (352) of the second parallel terminal electrode (3322) is connected in parallel is arranged facing each other at a predetermined interval with respect to the side surface in which a cross-sectional additional electrode (340) having at least one or more through-holes on the surface of the one-sided electrode active material layer (332d) of the cross-sectional electrode (332) of the second parallel terminal electrode (3322) is connected in parallel, thereby forming a pair of cross-sectional parallel electrodes n, and the n-1th direct · Parallel connection electrode (350 n-1 The double-sided electrode (352) is formed to be isolated from the single-sided parallel electrode pair n-1 by means of the double-sided electrode conductive plate (352c), the double-sided electrode conductive plate side wing (352e), and the double-sided electrode conductive plate lower wing (352f).
[0022] As shown in FIG. 3d1 to FIG. 3d5, the capacitor lid (320) equipped with slits is composed of a capacitor lid body (324) equipped with slits and a capacitor lid parallel terminal electrode mounting part (326) equipped with slits on the upper and lower left and right sides of the capacitor lid body (324). As shown in FIG. 3d1, the capacitor lid body (324) equipped with slits is composed of at least one or more n-1 capacitor lid series / parallel connection electrode slits (3221, 3222, 3223, …, 322 n-2 , 322 n-1) is a capacitor container series / parallel connection electrode slit (3121, 3122, 3123, …, 312) equipped with at least one or more n-1 slits of the capacitor container (310) equipped with the above slit. n-2 , 312 n-1 A first slit-equipped capacitor lid parallel terminal electrode mounting portion (326) on the front of the slit-equipped capacitor lid, which is formed and provided with a predetermined spacing such as ), and which is formed protruding by a predetermined distance compared to the left and right sides of the capacitor lid body (324) as shown in FIGS. 3d2 to 3d5, at the upper and lower portions of the left and right sides of the capacitor lid body (324) respectively. 1L , 326 1R ) A capacitor lid parallel terminal electrode mounting part (326) equipped with a second slit on the rear side 2L , 326 2R It is composed of the first parallel terminal electrode (3321) mounted and connected to the front portion of the slit-equipped capacitor container (310), the second parallel terminal electrode (3322) mounted and connected to the rear portion of the slit-equipped capacitor container (310), and n-1 series-parallel connection electrode slits (3121, 3122, 3123, …, 312) of the slit-equipped capacitor container (310). n-2 , 312 n-1 At least one or more of the n-1 series-parallel connected electrodes (3501, 3502, 3503, …, 350) sequentially inserted and connected in ) n-2 , 350 n-1 A capacitor lid (320) equipped with a slit is mounted on the upper part of a capacitor container (310) equipped with a slit, wherein at least one or more multiple n pairs of cross-sectional parallel electrodes are sequentially isolated and formed, and the first capacitor lid equipped with a slit parallel terminal electrode mounting part (326) 1L , 326 1RThe upper wing (332b) of the cross-sectional electrode conductive plate of the first parallel terminal electrode (3321), which is fastened to the front of the capacitor container (310) equipped with the slit, is fastened to the capacitor lid parallel terminal electrode mounting part (326) equipped with the second slit 2L , 326 2R The upper wing (332b) of the cross-sectional electrode conductive plate of the second parallel terminal electrode (3322), which is fastened to the rear surface of the capacitor container (310) equipped with the above slit, is fastened thereto, and the capacitor lid series-parallel connection electrode slits (3221, 3222, 3223, …, 322) equipped with at least one or more n-1 slits are fastened thereto. n-2 , 322 n-1 A capacitor container series-parallel connection electrode slit (3121, 3122, 3123, …, 312) equipped with at least one or more of the above-mentioned n-1 slits. n-2 , 312 n-1 At least one or more of the n-1 series-parallel connected electrodes (3501, 3502, 3503, …, 350) sequentially inserted and connected in ) n-2 , 350 n-1 Each double-sided electrode conductor plate upper wing (352b) is covered with the capacitor container (310) equipped with the slit so that each of the n electrode pairs formed within the capacitor container (310) is individually separated and formed into a sealed isolation space, and is configured to increase voltage by being connected in series with adjacent electrode pairs arranged in a continuous manner. The electrode pairs that are individually separated and form a sealed isolation space are configured to increase capacitance by electrically joining and connecting in parallel a cross-sectional electrode (340) equipped with at least one or more through-holes, and an electrolyte layer (360) is formed by injecting an electrolyte through an individual electrolyte injection port (not shown) into each cross-sectional parallel electrode pair.
[0023] Rated voltage of low self-discharge high voltage and large capacity electric double layer capacitor (300) V rated ) injected electrolyte rated voltage ( V electrolyte The number of n determined by the value divided by )[ex, ( V reated =) 48.6V / ( V electrolyte = n-1 series based on ) 2.7V = 18] · Parallel connection electrodes (350) are arranged sequentially to be connected in series with adjacent electrode pairs to increase voltage, and face-to-face parallel electrode pairs are connected in parallel to increase capacity, and a single-sided electrode, a double-sided electrode, a different single-sided electrode, a double-sided electrode, a single-sided electrode, and a different single-sided electrode are each connected in parallel with a single-sided electrode having at least one or more through-paths, and a single-sided additional electrode having at least one or more through-paths are connected in parallel so that the electric field direction between the cations and anions of the electrolyte induced on the electrode surface of each of the n pairs of single-sided parallel electrodes that become polarized according to charging is formed in the same direction and overlaps so as to minimize self-discharge caused by electric field cancellation.
[0024] The configuration of each component of the low self-discharge high voltage and high capacity electric double layer capacitor (300) of the present invention having the above configuration is described in more detail as follows.
[0025] The above at least one n-1 series · The double-sided electrode conductive plate (352c) of the parallel connection electrode (350) and double-sided electrode (352) is made of an aluminum plate or a copper plate with a thickness of 5㎛ to 100㎛, and at least one of the above multiple plates is connected to the single-sided electrode (332) in a direct manner ·The cross-sectional additional electrode conductive foil (340a) having a through-hole added to the parallel connection electrode (350) may be made of aluminum foil or copper foil with a thickness of 5㎛ to 100㎛, just like the double-sided electrode conductive plate (352c). The cross-sectional electrode conductive plate (332c) of the parallel terminal electrode (330) cross-sectional electrode (332) may also be made of aluminum foil or copper foil with a thickness of 5㎛ to 100㎛, just like the double-sided electrode conductive plate (352c). However, if the external shape of the low self-discharge high voltage and large capacity electric double layer capacitor (300) of the present invention is greatly increased and it is necessary to support the terminal, a relatively thick aluminum plate or copper plate with a thickness of 100㎛ or more may be used.
[0026] The above position · The active material layer (352a) and the active material layer (352d) of the double-sided electrode (352) of the parallel terminal connection electrode (350), the active material layer (332d) of the single-sided electrode (332), and the active material layer (340b) of the single-sided additional electrode (340) having a through-way are used as a single material or a mixture of two or more materials that can greatly expand the specific surface area of the electrode layer, such as activated carbon, graphene, carbon nanotubes (CNT), graphene oxide, and mesoporous carbon. In order to form an electrode layer on the aluminum foil or copper foil, a binder and a conductive agent are mixed in an appropriate molar concentration ratio in a pure water (DI Water) solvent, and the aluminum foil or copper foil is ·A mixed slurry of suitable viscosity is prepared to form an electrode layer film with a thickness of 80㎛ to 1,000㎛ according to the manufacturing shape on one side of the double-sided electrode conductive plate (352c) of the double-sided electrode (352) of the parallel connection electrode (350) and the single-sided additional electrode conductive foil (340a) of the single-sided additional electrode (340) having a through-path, and one side of the single-sided electrode conductive plate (332c) of the single-sided electrode (332), and the above direct · The above-mentioned mixed slurry is applied to a uniform thickness on one side of the double-sided electrode conductive plate (352c) of the double-sided electrode (352) of the parallel connection electrode (350) and the one side of the single-sided additional electrode conductive foil (340a) of the single-sided additional electrode (340) having a through-path, and on one side of the single-sided electrode conductive plate (332c) of the single-sided electrode (332) to form an electrode layer film, and the above-mentioned direct · By baking the electrode layer film formed by applying the above-mentioned mixed slurry to a uniform thickness at a temperature of 80°C to 150°C, where there is no thermal deformation of the aluminum foil or copper foil that is the double-sided electrode conductive plate (352c) of the parallel-connected electrode (350) double-sided electrode (352) and the single-sided additional electrode conductive foil (340a) of the single-sided additional electrode (340) having a through-path and the single-sided electrode conductive plate (332c) of the single-sided electrode (332), for about 30 minutes to evaporate the solvent contained in the mixed slurry, the above-mentioned direct · A parallel connection electrode (350) forms a double-sided electrode other side active material layer (352a) of a double-sided electrode (352), a double-sided electrode one side active material layer (352c) of a double-sided electrode (352), a single-sided electrode one side active material layer (340b) of a single-sided electrode with a through-way of a single-sided electrode (340) with a through-way, and a single-sided electrode active material layer (332d) of a single-sided electrode (332).
[0027] The capacitor container (310) having the above slit and the capacitor lid (320) having the above slit can be manufactured by injection molding or the like using a polypropylene-based substrate.
[0028] The electrolyte layer (360) is formed by individually injecting an electrolyte of the type ethylene carbonate, propylene carbonate, or acetonitrile for an electric double layer capacitor into a sealed opposite electrode pair isolation space through an electrolyte injection port (not shown) individually formed in each of the n pairs of cross-sectional parallel electrodes on the upper part of the capacitor lid (310) equipped with the slit, and sealing the injection port by blocking the injection port to form the low self-discharge high voltage and large capacity electric double layer capacitor (300) of the present invention. Industrial applicability
[0029] The present invention can be utilized in various industrial fields, such as personal aerial vehicles (PAVs), auto-guided vehicles (AGVs), fuel cell electric vehicles (FCEVs), energy storage systems (ESS), and uninterruptible power supplies (UPS), which require low self-discharge high voltage and large-capacity electric energy storage devices capable of operating in sub-zero temperatures, with long lifespan and high-output operation, as well as low self-discharge characteristics. Explanation of the symbols
[0030] 100: Conventional high-voltage and high-capacity electric double layer capacitor module in which multiple electric double layer capacitors are connected in parallel and series 110 : Circuit board 112: Electric double layer capacitor first polarity terminal connector 114: Electric double layer capacitor second polarity terminal connector 116 : Parallel / Series Connection Challenge Board 120: High-voltage and high-capacity electric double-layer capacitor module first polarity parallel conductive plate 140: High-voltage and high-capacity electric double-layer capacitor module second polarity parallel conductive plate 150 : Electric double layer capacitor 151 : Electric double layer capacitor container 152 : Electric double layer capacitor first terminal 154 : Electric double layer capacitor second terminal 155 : First polarity double-sided electrode 155a: First polarity conductive foil 155b: One-sided active material electrode layer of the first polarity conductive foil 155c: First polarity conductive foil, other side active material electrode layer 156 : Second polarity positive electrode 156a : Second polarity conductive foil 156b: Second polarity conductive foil one-sided active material electrode layer 156c: Second polarity conductive foil, other side active material electrode layer 157 : Separator 158 : Electrolyte 159 : Sealing plate 170: Electric field between a negatively charged electrode and a charged cation 180: Electric field between a polarized electrode and a charged anion 200: High-voltage electric double-layer capacitor equipped with multiple bipolar double-sided electrodes 210 : Sealing pattern layer 230 : First polarity single-sided electrode 232 : First polarity single-sided electrode conductive foil 234 : First polarity single-sided electrode active material layer 240 : Second polarity single-sided electrode 242 : Second polarity single-sided electrode conductive plate 244 : Second polarity single-sided electrode active material layer 250 : Bipolar bifacial electrode 252 : Bipolar double-sided conductive foil 254: Bipolar double-sided electrode secondary polarity active material layer 256 : Bipolar double-sided electrode first polarity active material layer 260 : Electrolyte layer 270: Separator equipped with multiple electrolyte passages 272 : Separator 274 : Electrolyte direct passage 300 : Low self-discharge high voltage and large capacity electric double layer capacitor of the present invention 310 : Capacitor container equipped with a slit 312: Electrode slit for series / parallel connection of capacitor container equipped with a slit 314: Side portion of a capacitor container equipped with a slit 316 : Capacitor container with slit parallel terminal electrode mounting part 318 : Bottom of capacitor container equipped with a slit 320 : Capacitor lid with slit 322 : Slit-equipped capacitor lid series / parallel connection electrode slit 324 : Capacitor lid body equipped with a slit 326 : Capacitor lid with slit parallel terminal electrode mounting part 330 : Parallel terminal electrode 332 : Single-sided electrode 332b : Upper wing of single-sided electrode conductive plate 332c : Single-sided electrode conductive plate 332d : Single-sided electrode active material layer 332e : Side wing of single-sided electrode conductive plate 332f : Lower wing of single-sided electrode conductive plate 340 : Single-sided additional electrode with a through-path 340a: Conductive foil with a single-sided additional electrode having a through-path 340b: One-sided additional electrode active material layer having a through-path 340d: Sectional additional electrode penetration path equipped with a penetration path 350 : Series / Parallel connection electrodes 352 : Double-sided electrode 352a: Double-sided electrode, other side active material layer 352b : Upper wing of double-sided electrode conductive plate 352c : Double-sided electrode conductive plate 352d : Double-sided electrode single-sided active material layer 352e : Double-sided electrode conductive plate side wing 352f : Double-sided electrode conductive plate abutment wing 360 : Electrolyte layer 362 : Cation 364 : Solvent 366 : Anion 370 : Electric field superimposed on a negatively polarized parallel terminal electrode 372 : Electric field between cations charged on a cathodic electrode 374: Electric field between cations charged on a cross-sectional additional electrode equipped with a cathodic penetration path 380: Electric field superimposed on polarized parallel electrodes 382: Electric field between anions charged on a polarized single-sided electrode 384: Electric field between anions charged on a cross-sectional electrode equipped with a bipolarized through-path
Claims
Claim 1 A low self-discharge high voltage and high-capacity electrostatic double layer capacitor (EDLC), characterized by comprising: a first parallel terminal electrode; a second parallel terminal electrode; and an electrolyte layer formed by injecting and sealing an electrolyte into each of at least one pair of cross-sectional parallel electrodes, which are formed by sequentially mounting at least one or more series-parallel connecting electrodes between the first parallel terminal electrode and the second parallel terminal electrode and arranging them at a predetermined distance from each other in a capacitor container equipped with a slit, and covering them with a capacitor lid equipped with a slit. Claim 2 In claim 1, the parallel terminal electrode is characterized by being formed by facing and joining a single-sided electrode; and a single-sided additional electrode having at least one or more through-paths. Claim 3 In claim 2, the cross-sectional electrode is characterized by being formed by a cross-sectional electrode conductive plate; and one surface of the cross-sectional electrode conductive plate being formed by a cross-sectional electrode active material layer, in a low self-discharge high voltage and large capacity electric double layer capacitor. Claim 4 In claim 3, the cross-sectional electrode conductive plate is characterized in that the cross-sectional electrode conductive plate is formed such that the upper wing of the cross-sectional electrode conductive plate; the side wing of the cross-sectional electrode conductive plate; and the lower wing of the cross-sectional electrode each protrude outwardly, in a low self-discharge high-voltage and high-capacity electric double layer capacitor. Claim 5 In claim 2, the single-sided additional electrode having a through-path is characterized by comprising: a single-sided additional electrode conductive plate having a through-path; and one surface of the single-sided additional electrode conductive plate having a through-path forming a single-sided additional electrode active material layer having a through-path; and having at least one or more single-sided additional electrode through-paths having a plurality of through-paths penetrating the single-sided additional electrode conductive plate having a through-path and the single-sided additional electrode active material layer having a through-path. Claim 6 In claim 1, the series-parallel connected electrode is characterized by being formed by a double-sided electrode; a single-sided additional electrode having at least one or more through-paths on one side of the double-sided electrode being arranged facing each other and joined, and a single-sided additional electrode having at least one or more through-paths on the other side of the double-sided electrode being arranged facing each other and joined, in a low self-discharge high voltage and large capacity electric double layer capacitor. Claim 7 In claim 6, the double-sided electrode is characterized by comprising: a double-sided electrode conductive plate; a double-sided electrode one-sided active material layer on one surface of the double-sided electrode conductive plate; and a double-sided electrode other-sided active material layer on the other surface of the double-sided electrode conductive plate, in a low self-discharge high voltage and high-capacity electric double layer capacitor. Claim 8 In claim 7, the double-sided electrode conductive plate is characterized in that the upper wing of the double-sided electrode conductive plate; the side wing of the double-sided electrode conductive plate; and the lower wing of the double-sided electrode each protrude outwardly, forming a low self-discharge high-voltage and high-capacity electric double layer capacitor. Claim 9 In claim 1, the capacitor container equipped with a slit is composed of a side portion of the capacitor container equipped with a slit and a bottom portion of the capacitor container equipped with a slit; wherein a parallel terminal electrode mounting portion of the capacitor container equipped with a slit is formed at the left and right ends of the side portion of the capacitor container equipped with a slit and the bottom portion of the capacitor container equipped with a slit, respectively, and at least one or more series-parallel connection electrode slits of the capacitor container equipped with a slit are formed at predetermined equal intervals on the side portion of the capacitor container equipped with a slit and the bottom portion of the capacitor container equipped with a slit, characterized by a low self-discharge high voltage and large capacity electric double layer capacitor. Claim 10 In claim 1, the slit-equipped capacitor lid is characterized by comprising: a slit-equipped capacitor lid body; slit-equipped capacitor lid parallel terminal electrode mounting portions formed at the left and right ends of the slit-equipped capacitor lid body, respectively; and at least one or more slit-equipped capacitor lid series-parallel connection electrode slits formed at predetermined equal intervals on the slit-equipped capacitor lid body. Claim 11 A low self-discharge high-voltage and high-capacity electric double layer capacitor according to claim 1, characterized in that the capacitor container equipped with the slit uses one of polypropylene, thermoplastic epoxy resin, phenol, and polyphthanlamide (PPA). Claim 12 A low self-discharge high-voltage and high-capacity electric double layer capacitor according to claim 1, characterized in that the slit-equipped capacitor lid is made of one of polypropylene, thermoplastic epoxy resin, phenol, and polyphthanlamide (PPA). Claim 13 A low self-discharge high-voltage and high-capacity electric double layer capacitor according to claim 1, characterized in that the electrolyte layer uses an electrolyte of the ethylene carbonate, propylene carbonate, or acetonitrile type. Claim 14 In claim 3, the low self-discharge high voltage and high-capacity electric double layer capacitor is characterized in that the cross-sectional electrode conductive plate uses an aluminum foil or copper foil with a thickness of 5 to 100 μm. Claim 15 In claim 3, the low self-discharge high voltage and high-capacity electric double layer capacitor is characterized in that the cross-sectional electrode conductive plate uses an aluminum plate or a copper plate with a thickness of 100 μm or more. Claim 16 In claim 3, the single-sided electrode active material layer is characterized as being one material selected from activated carbon, graphene, carbon nanotubes (CNT), graphene oxide, and mesoporous carbon, or a mixture of two or more materials, in a low self-discharge high-voltage and high-capacity electric double-layer capacitor. Claim 17 In claim 5, the cross-sectional additional electrode conductive foil plate having the through-path is characterized by using an aluminum foil or a copper foil with a thickness of 5 to 100 μm, in a low self-discharge high voltage and high-capacity electric double layer capacitor. Claim 18 In claim 5, the single-sided additional electrode conductive plate having the through-path is characterized by using an aluminum plate or a copper plate with a thickness of 100 μm or more, in a low self-discharge high-voltage and high-capacity electric double layer capacitor. Claim 19 In claim 5, the single-sided additional electrode material layer having the through-path is characterized as being one material selected from activated carbon, graphene, carbon nanotubes (CNT), graphene oxide, and mesoporous carbon, or a mixture of two or more materials, in a low self-discharge high-voltage and high-capacity electric double layer capacitor. Claim 20 In claim 7, the low self-discharge high voltage and high-capacity electric double layer capacitor is characterized in that the double-sided electrode conductive plate uses an aluminum foil or copper foil with a thickness of 5 to 100 μm. Claim 21 In claim 7, the low self-discharge high voltage and high-capacity electric double layer capacitor is characterized in that the double-sided electrode conductive plate uses an aluminum plate or a copper plate with a thickness of 100 μm or more. Claim 22 In claim 7, the low self-discharge high voltage and high-capacity electric double layer capacitor is characterized in that the double-sided electrode single-sided active material layer is one material selected from activated carbon, graphene, carbon nanotubes (CNT), graphene oxide, and mesoporous carbon, or a mixture of two or more materials. Claim 23 In claim 7, the low self-discharge high voltage and high-capacity electric double layer capacitor is characterized in that the active material layer on the other side of the double electrode is one material selected from activated carbon, graphene, carbon nanotubes (CNT), graphene oxide, and mesoporous carbon, or a mixture of two or more materials.