WO2016027978A1 - Dispositif de stockage d'energie ayant une caracteristique de dissipation de chaleur amelioree - Google Patents

Dispositif de stockage d'energie ayant une caracteristique de dissipation de chaleur amelioree Download PDF

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Publication number
WO2016027978A1
WO2016027978A1 PCT/KR2015/006596 KR2015006596W WO2016027978A1 WO 2016027978 A1 WO2016027978 A1 WO 2016027978A1 KR 2015006596 W KR2015006596 W KR 2015006596W WO 2016027978 A1 WO2016027978 A1 WO 2016027978A1
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WIPO (PCT)
Prior art keywords
energy storage
case
heat dissipation
ultracapacitor
pad
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PCT/KR2015/006596
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English (en)
Korean (ko)
Inventor
이정걸
서태호
Original Assignee
엘에스엠트론 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from KR1020140179732A external-priority patent/KR20160022207A/ko
Application filed by 엘에스엠트론 주식회사 filed Critical 엘에스엠트론 주식회사
Priority to JP2017508672A priority Critical patent/JP6483239B2/ja
Priority to US15/503,765 priority patent/US10115531B2/en
Priority to CN201580044370.8A priority patent/CN106663533B/zh
Priority to EP15833889.7A priority patent/EP3185265A4/fr
Publication of WO2016027978A1 publication Critical patent/WO2016027978A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings

Definitions

  • the present invention relates to an energy storage device, and more particularly, to an energy storage device with improved heat dissipation characteristics.
  • an ultracapacitor is also called a supercapacitor, and is an energy storage device having intermediate characteristics between an electrolytic capacitor and a secondary battery.
  • Ultracapacitors can be used with secondary batteries due to their high efficiency and semi-permanent life characteristics, and are next-generation electrical energy storage devices that can replace secondary batteries.
  • Ultracapacitors are often used as battery replacements for applications that are not easy to maintain and require long service life. Ultracapacitors have fast charge and discharge characteristics and can be used as auxiliary power sources for mobile communication information devices such as mobile phones, laptops, and PDAs. It is also ideally suited for mains or auxiliary power sources, such as electric vehicles, night road lights and uninterrupted power supplies, which require high capacity.
  • the high voltage module can be configured by connecting a plurality of ultracapacitors in a case in need quantity.
  • FIG. 1 is a view showing the configuration of an ultracapacitor module according to the prior art.
  • the ultracapacitor module covers a case 20 for accommodating the ultracapacitor array 10, the ultracapacitor array 10, and upper and lower entrances of the case 20. 30, 40).
  • the ultracapacitor array 10 is composed of a plurality of ultracapacitors in which electrode terminals are connected by a bus bar 11 and coupled by a nut.
  • Ultracapacitor modules can improve energy storage by driving multiple ultracapacitors. However, the heat generated when the ultracapacitor module is driven also increases rapidly, which may reduce the reliability and stability of the ultracapacitor module.
  • the busbar 11 which is a connection member for connecting the adjacent ultracapacitor, and the cover 20, 40 of the upper and lower surfaces of the metal covering the case 20 Mainly radiate heat.
  • the side of the case 20 is made of synthetic resin in order to reduce the weight of the ultracapacitor module and lower the production cost, and has a plate shape, so that the contact area with the ultracapacitor is small, so that heat dissipation is hardly achieved.
  • the ultracapacitor can radiate heat mainly through the busbars 11, but the busbars 11 cannot radiate efficiently because the heat radiation area is narrow, so that the temperature inside the case is increased. As the rise occurs, the life of the ultracapacitor is reduced.
  • Patent Document 1 Korean Registered Patent No. 10-1341474 (announced on December 13, 2013)
  • the present invention has been made to solve the above problems, and in order to receive energy storage cells, such as ultracapacitors, into a case, a heat dissipation is achieved through a case surface having a small contact area, thereby improving heat dissipation characteristics.
  • the purpose is to provide.
  • a cell assembly formed by connecting at least two cylindrical energy storage cells in series;
  • a case accommodating the cell assembly, the housing having a shape corresponding to an outer surface of the energy storage cell;
  • a heat dissipation pad disposed between an outer side surface of the energy storage cell of the cell assembly and an inner side surface of the accommodating part, wherein the case includes at least two case blocks.
  • the receiving portion is formed.
  • the center angle of the energy storage cell in contact with the heat radiating pad may be 30 degrees to 60 degrees.
  • An arc formed by the accommodation portion may have a length greater than or equal to the length of the heat radiation pad.
  • the heat dissipation pad may have elasticity, and a distance between the accommodating part and the energy storage cell may be larger than a diameter tolerance of the energy storage cells while being smaller than a thickness before the heat dissipation pad.
  • the heat dissipation pad may be attached to the energy storage cell.
  • the heat dissipation pad may be a heat conductive filler.
  • An adhesive layer may be provided on one side of the heat radiation pad.
  • the energy storage cell may be an ultracapacitor.
  • the case block may include a plurality of convex portions having an arc shape identical to an outer shape of the energy storage cell; A convex portion connecting portion connecting the plurality of convex portions; And a concave portion formed between the convex portion and the convex portion connecting portion.
  • At least one heat sink may protrude vertically in the recess.
  • the case block may be any one of an 'L' shape or a 'c' shape.
  • one of the outermost convex portions of the plurality of convex portions may be connected to connect an arc shape of the convex portion.
  • the case block may further include a case block connecting portion extending from one of the outermost convex portions and bent in a length direction of the case block.
  • the outermost convex portions of the plurality of convex portions may be connected so that an arc shape of the convex portion continues.
  • the case block may further include a case block connecting portion extending from each of the outermost convex portions and bent in a length direction of the case block.
  • the convex connection portion may be formed with a tab for fixing the cover.
  • the distance between the energy storage cell and the case is far from the end point of the heat dissipation pad to insulate the energy storage cell from the case.
  • An insulating film may be further formed on an outer surface of the energy storage cell.
  • the present invention improves the heat dissipation characteristics by widening the contact area between the energy storage cell and the case by providing a heat dissipation pad between the case and the energy storage cell as well as heat dissipation through connection members such as nuts and bus bars.
  • the present invention facilitates the installation of the heat dissipation pad and reduces the cost of manufacturing the case by manufacturing a case accommodating several energy storage cells by combining a plurality of case blocks.
  • the present invention optimizes the product mass of the energy storage device while improving heat dissipation characteristics.
  • the present invention improves product stability by naturally separating the case and the energy storage cell by increasing the distance between the energy storage cell and the case from both ends of the heat radiation pad.
  • FIG. 1 is a view showing an energy storage device module according to the prior art
  • FIG. 2 is a diagram illustrating a configuration of an energy storage device according to an embodiment of the present disclosure
  • FIG. 3 is a view showing a connection between energy storage cells according to another embodiment of the present invention.
  • FIG. 4 is a cross-sectional view taken along line II-II ′ of FIG. 2;
  • FIG. 5 is a view showing the configuration of a case block according to an embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a configuration of a case block according to another embodiment of the present invention.
  • FIG. 7 is a diagram illustrating a center angle when a heat dissipation pad contacts an energy storage cell according to an embodiment of the present invention.
  • FIG. 8 is a view showing the contact shape, the heat dissipation efficiency and the product mass of the heat radiation pad and the energy storage cell according to an embodiment of the present invention with angles.
  • FIG. 9 is a graph showing a change in heat dissipation efficiency and product mass according to a contact angle according to an embodiment of the present invention.
  • FIG. 10 is an enlarged view of a portion A of FIG. 2.
  • FIG. 2 is a diagram illustrating a configuration of an energy storage device according to an embodiment of the present invention
  • FIG. 3 is a diagram illustrating a connection between energy storage cells according to another embodiment of the present invention
  • FIG. 4 is II- of FIG. 2. It is a figure which shows the cross section along the II 'line.
  • the energy storage device includes a case 200 for receiving a cell assembly 100 and a cell assembly 100 in which at least two or more energy storage cells 110 are connected in series. ).
  • the cell assembly 100 may be formed by connecting at least two or more energy storage cells 110 in series.
  • the energy storage cell 110 may be an ultracapacitor, and in describing the present embodiment, the energy storage cell is described as an ultracapacitor.
  • the present invention is not limited thereto, and the energy storage cell may be any cell capable of storing electrical energy such as a secondary battery or a battery.
  • Ultracapacitor 110 has a fast charging and discharging characteristics, and accordingly, as well as an auxiliary power source of mobile communication information devices such as mobile phones, laptops, PDAs, electric vehicles, hybrid vehicles, solar cell power supply, uninterruptible power supply that requires high capacity It can be used as a main power supply or an auxiliary power supply such as an uninterruptible power supply (UPS).
  • mobile communication information devices such as mobile phones, laptops, PDAs, electric vehicles, hybrid vehicles, solar cell power supply, uninterruptible power supply that requires high capacity It can be used as a main power supply or an auxiliary power supply such as an uninterruptible power supply (UPS).
  • UPS uninterruptible power supply
  • the ultracapacitor 110 may have a cylindrical shape, and as shown in FIG. 2, the ultracapacitor 110 may be connected in series with another ultracapacitor in the longitudinal direction in which the electrode is formed to form the cell assembly 100. At this time, the connection of neighboring ultracapacitors may be connected by connecting members, for example, nuts and busbars.
  • the positive terminal of the first ultracapacitor and the negative terminal of the second ultracapacitor are connected to the busbar 130, the nut 150, and the like.
  • the cell assembly 100 may be formed by connecting in series using the same connection member.
  • the plurality of ultracapacitors 110 are connected to the positive terminal and the negative terminal by the busbars 130, and are coupled by the nut 150 to form the cell assembly 100.
  • the cell assembly 100 may be accommodated in the case 200 to form an ultracapacitor module.
  • the case 200 may accommodate the cell assembly 100 formed by connecting the ultracapacitor 110 in series.
  • the case 200 may include a receiving unit having a shape corresponding to an outer surface of the ultracapacitor 110 to accommodate the cell assembly 100 formed by connecting the ultracapacitor 110 in series.
  • the case 200 may be formed by combining at least two or more case blocks (510 of FIG. 5 or 610 of FIG. 6) of the same shape.
  • a receptacle for accommodating the cell assembly 100 may be formed by coupling the case block 510 of FIG. 5 or 610 of FIG. 6.
  • the case block 510 of FIG. 5 or 610 of FIG. 6 will be described in detail below with reference to FIGS. 5 and 6.
  • FIG. 5 is a diagram illustrating a configuration of a case block according to an embodiment of the present invention.
  • the case block 510 may have an 'L' shape and has a receiving portion 518 in a shape corresponding to an outer shape of the ultracapacitor 110.
  • the inner surface of the case block 510 in contact with the outer surface of the ultracapacitor 110 may have a cylindrical round shape.
  • the case 200 may be completed by combining four 'L' shaped case blocks, and thus an accommodating part 518 may be formed.
  • the case block 510 may include a plurality of convex parts 511 and convex parts 511 having the same arc shape as the outer shape of the ultracapacitor 110.
  • Convex portion connecting portion 513 to connect, a concave portion 512 formed between the convex portion 511 and the convex portion connecting portion 513, and case block connecting portion 514, 515 connecting the case block 510.
  • the plurality of convex portions 511 has the same arc shape as the outer shape of the ultracapacitor 110 to form an accommodating portion 518 for accommodating the ultracapacitor 110, and a heat radiation pad 210 is formed therein. Attached.
  • the heat dissipation pad 210 emits heat generated in the ultracapacitor 110 to the convex portion 511, and also functions to insulate the ultracapacitor 110 and the convex portion 511 (that is, the case 200).
  • the convex parts 511 are connected by the convex part connecting part 513, and a tab for fixing the upper cover and the lower cover which covers the case 200 is formed at the convex part connecting part 513.
  • the tab is a structure for bolting (bolting) process is inserted into the bolt for fixing the case 200 and the cover.
  • the cave block 510 formed by connecting the plurality of convex portions 511 may have an 'L' shape.
  • one of the outermost convex portions is arranged and connected in the width direction, and the other convex portions are arranged and connected in the longitudinal direction.
  • one of the outermost convex portions in the longitudinal direction of the plurality of convex portions 511 is connected so that an arc shape of the convex portion 511 is continued.
  • the concave portion 512 is formed between the convex portion 511 and the convex portion connecting portion 513.
  • the concave portion 512 is formed by folding a part of the convex portion 511 outward, which is for securing an insulation distance, which will be described later.
  • a plurality of heat sinks 517 are vertically installed at regular intervals to radiate heat generated from the ultracapacitor 110 to the outside. That is, the heat sink 517 is vertically installed at regular intervals in order to increase heat radiation efficiency through the air flow between the heat sinks 517.
  • a plurality of heat sinks 517 are installed to widen the heat dissipation area.
  • the height of the heat sink 517 is formed to be the same as the height of the convex connection portion 513.
  • the concave portion 512 is not formed on both sides of the convex connection portion 513 located on the leftmost side in the longitudinal direction, but similarly to the other convex connection portion 513, the concave portions 512 on both sides. Can be formed.
  • Case block connections 514 and 515 connect the cable block 510.
  • the case block connecting portion 514 of the case block connecting portions 514 and 515 extends from the convex portion 511 and is bent in the longitudinal direction, and connects the case block 510 in the width direction.
  • the case block connecting portion 515 of the case block connecting portions 514 and 515 extends from the convex portion 511 and is bent in the width direction, and connects the case block 510 in the longitudinal direction.
  • FIG. 6 is a diagram illustrating a configuration of a case block according to another embodiment of the present invention.
  • the case block 610 may have a 'c' shape and has a receiving portion 618 in a shape corresponding to an outer shape of the ultracapacitor 110.
  • the inner surface of the case block 610 contacting the outer surface of the ultracapacitor 110 may have a cylindrical round shape.
  • the case 200 may be completed by combining two 'c' shaped case blocks, and thus an accommodating part 618 may be formed.
  • the case block 610 may include a plurality of convex parts 611 and convex parts 611 having the same arc shape as the outer shape of the ultracapacitor 110.
  • Convex portion connecting portion 613 to connect, a concave portion 612 formed between the convex portion 611 and the convex portion connecting portion 613, and a case block connecting portion 614 for connecting the case block 610.
  • the plurality of convex portions 611 have the same arc shape as the outer side of the ultracapacitor 110 to form an accommodating portion 618 for accommodating the ultracapacitor 110, and a heat radiation pad 210 is formed therein. Attached.
  • the heat dissipation pad 210 emits heat generated in the ultracapacitor 110 to the convex portion 611, and also functions to insulate the ultracapacitor 110 and the convex portion 611 (that is, the case 200).
  • the convex parts 611 are connected by the convex part connecting part 613, and the tabs for fixing the upper cover and the lower cover which cover the case 200 are formed in the convex part connecting part 613.
  • the tab is a structure for bolting (bolting) process is inserted into the bolt for fixing the case 200 and the cover.
  • the cave block 610 formed by connecting the plurality of convex portions 611 has a 'c' shape.
  • the outermost convex portions are arranged in the width direction and connected, and the remaining convex portions are arranged in the longitudinal direction and connected. That is, the outermost convex portions of the plurality of convex portions 611 are connected so that arc shapes of the convex portions 611 are continued.
  • the recess 612 is formed between the convex portion 611 and the convex portion connecting portion 613.
  • the concave portion 612 is formed by folding a part of the convex portion 611 outward, which is for securing an insulation distance, which will be described later.
  • a plurality of heat sinks 617 are vertically installed at the recesses 612 at regular intervals to radiate heat generated from the ultracapacitor 110 to the outside. That is, the heat sink 617 is vertically installed at regular intervals in order to increase the heat radiation efficiency through the air flow between the heat sink 617.
  • a plurality of heat sinks 617 are installed to widen the heat radiation area.
  • the height of the heat sink 617 is formed to be the same as the height of the convex connection portion 613.
  • the concave portion 612 is not formed at both sides of the convex connection portion 613 positioned at the outermost side in the longitudinal direction, but like the other convex connection portion 613, the concave portion 612 is formed at both sides. Can be formed.
  • the case block connecting portion 614 connects the cable block 610.
  • the case block connecting portion 614 extends from the convex portion 611 and is bent in the longitudinal direction, and connects the case block 610 in the width direction.
  • the case 200 formed by the combination of the case blocks 510 and 610 described above with reference to FIGS. 5 and 6 may be formed of a metal material.
  • the receiving portions 518 and 618 formed inside the case 200 are manufactured to maximize the shape of the ultracapacitor 110 in a form corresponding to the outer surface of the ultracapacitor 110. Therefore, the heat dissipation effect may be enhanced by maximizing the contact surface between the case 200 and the ultracapacitor 110 to increase the area where heat is released.
  • the heat dissipation pad 210 is attached to the inner surfaces of the accommodating parts 518 and 618 to further improve the heat dissipation effect. That is, when the cell assembly 100 is inserted into the receiving portions 518 and 618, the receiving portion 518 may be positioned between the cell assembly 100 and the receiving portions 518 and 618.
  • the heat dissipation pad 210 may be attached to an inner surface of the 618.
  • the heat dissipation pad 210 may be attached to the inner surfaces of the accommodating parts 518 and 618 in the length direction of the electrode of the ultracapacitor 110.
  • the width of the heat radiation pad 210 is smaller than the length of the arc formed by the receiving portions 518 and 618.
  • the width of the heat radiation pad 210 is greater than the length of the arc formed by the accommodating portions 518 and 618, a part of the heat dissipation pad 210 may not come into contact with the accommodating portions 518 and 618 to radiate heat. Because you can't. Conversely, the receptacles 518 and 618 should have an arc of length longer than the width of the heat dissipation pad 210.
  • the heat dissipation pad 210 may include a heat conductive filler for heat transfer, for example, metal powder or ceramic powder.
  • a heat conductive filler for heat transfer for example, metal powder or ceramic powder.
  • the metal powder may be any one or a mixture of two or more of aluminum, silver, copper, nickel and tungsten.
  • examples of the ceramic powder may be silicon, graphite, and carbon black.
  • the heat dissipation pad 210 may be made of silicon synthetic rubber.
  • the heat dissipation pad 210 may serve to fix the ultracapacitor 110 accommodated in the case 200. That is, when the ultracapacitor 110 is accommodated in the case 200, the heat dissipation pad 210 may directly contact the ultracapacitor 110 to prevent the ultracapacitor 110 from moving. Even if the receiving portions 518 and 618 are manufactured in a form corresponding to the outer surface of the ultracapacitor 110, the intimate contact surface with the ultracapacitor 110 may not be formed, and thus, proper heat dissipation may not be achieved.
  • the case 200 is fixed while the ultracapacitor 110 is fixed in the case 200. It is possible to increase the heat dissipation effect by widening the contact area between the ultracapacitor 110.
  • the heat radiation pad 210 may have elasticity.
  • a plurality of ultracapacitors 110 are inserted into the case 200, and there may be a difference in diameter for each ultracapacitor 110. Accordingly, the ultracapacitor 110 may not be completely pressed onto the heat radiation pad 210. Therefore, by using the heat radiation pad 210 having elasticity in consideration of the diameter difference between the ultra-capacitor 110, all the ultra-capacitor 110 can be sufficiently compressed to the heat radiation pad 210.
  • the thickness before the compression of the heat radiation pad 210 is preferably larger than the diameter tolerance of the ultracapacitors 110.
  • the thickness before compression of the heat radiation pad 210 is preferably greater than 1.4 mm (0.7 mm ⁇ 2), for example. Have a thickness of 2mm.
  • the heat dissipation pad 210 has elasticity, when the ultra capacitor 110 is inserted into the case 200, the heat dissipation pad 210 is deformed to fit the outer shape of the ultra capacitor 110 and thus the ultra capacitor 110 is formed. Adhesion can be increased, resulting in an increase in contact area. Therefore, the heat dissipation efficiency can be further increased as the contact area is increased.
  • the space between the accommodating portions 518 and 618 of the case 200 and the ultracapacitor 110 is smaller than the thickness before compression of the heat radiation pad 210 and the ultracapacitor. It is desirable to be larger than the diameter tolerance of 110.
  • the interval between the accommodating parts 518 and 618 and the ultracapacitor 110 is an interval when the assembling of the energy storage device is completed without using the heat dissipation pad 210.
  • the gap should be larger than the diameter tolerance of the ultracapacitors 110, because if the gap is smaller than the diameter tolerance, case assembly may be incomplete and a gap may occur.
  • the reason why the interval should be smaller than the thickness before the heat radiation pad 210 is compressed is to allow the ultracapacitors 110 to be sufficiently compressed to the heat radiation pad 210.
  • the gap is smaller than the thickness before the compression of the heat radiating pad 210, the ultra-capacitors 110 to the heat-compressing pad 210 during the assembly of the case, thus fixing the ultra-capacitor 110 in the case 200
  • the heat dissipation effect may be enhanced by increasing the contact area between the ultracapacitor 110 and the heat dissipation pad 210.
  • one side surface of the heat radiation pad 210 may be provided with an adhesive layer to easily bond the heat radiation pad to the receiving portions 518 and 618 of the case 200.
  • the adhesive layer may further include a thermally conductive filler, such as a metal powder or a ceramic powder, to prevent the thermal conductivity from being lowered through the adhesive layer.
  • the heat dissipation pad 210 is attached to the inner surface of the case 200, that is, the outer surface of the ultracapacitor 110 and the inner surface of the accommodating parts 518 and 618.
  • the heat dissipation through the heat dissipation may be further improved, and the case 200 may be discharged by effectively transferring heat generated inside the case 200 to the outside by using a material having excellent thermal conductivity such as copper or aluminum. You can.
  • connection member that connects the adjacent ultracapacitors 110, that is, busbars, but the busbars had a small area capable of emitting heat, so the effect was insignificant.
  • the busbar has a horizontal length of 100 (mm) and a vertical length of 28 (mm)
  • the area capable of dissipating heat through the busbar per ultracapacitor is 100 * 28/2 (the area of the busbar per ultra capacitor).
  • 2 (Top & Bottom side) 2800 (mm 2 ).
  • the heat inside the case 200 may be more efficiently released to the outside by releasing heat through the side surface of the case 200, that is, by increasing the heat dissipation area.
  • the heat dissipation performance may be further improved by attaching a heat dissipation member having excellent thermal conductivity, that is, a heat dissipation pad 210 to the inner surface of the case 200 that the ultracapacitor 110 contacts.
  • the heat dissipation area per ultracapacitor is 2 * 3.14 * (60 (the diameter of the ultracapacitor) / 2).
  • * 130 (length of the thermal pad) (mm) * 60 (angle) * 2/360 8164 (mm 2 ).
  • the reason for multiplying the angle by 2 is that the heat radiation pad 210 is attached to two places in the present embodiment.
  • the center angle is an angle made by two radii in a circle or a sector, and in the embodiment of the present invention, the center angle is a portion of the ultra-capacitor 110 that is in contact with the heat dissipation pad 210 and the ultra-capacitor 110.
  • FIG. 7 is a view illustrating a center angle when the heat dissipation pad 210 and the ultracapacitor 110 contact each other according to an embodiment of the present invention. As shown in FIG. 7, the center angle ⁇ is a heat dissipation pad 210.
  • the ultracapacitor 110 is an angle formed by two radii connecting the two ends of the contact portion from the center of the ultracapacitor 110.
  • the both ends mean both ends when the heat dissipation pad 210 is compressed between the ultracapacitor 110 and the case 200.
  • the contact angle of the ultracapacitor 110 in contact with the heat dissipation pad 210 is preferably 30 degrees to 60 degrees.
  • the heat radiation efficiency when the center angle ⁇ is 30 degrees or more is much greater than the heat radiation efficiency when the center angle ⁇ is less than 30 degrees.
  • the product mass of the storage device becomes large.
  • the center angle ⁇ of the ultracapacitor 110 in contact with the heat radiating pad 210 is preferably 30 degrees to 60 degrees. This will be described with reference to the drawings.
  • FIG. 8 is a view showing the contact shape, the heat dissipation efficiency, and the product mass of the heat radiation pad and the energy storage cell according to an embodiment of the present invention according to the angle
  • Figure 9 is a heat dissipation efficiency according to the contact angle according to an embodiment of the present invention
  • graphs showing changes in product mass.
  • Heat dissipation efficiency is calculated using the following formula.
  • the product mass adds the total weight of the ultracapacitors, the mass of the case, the mass of the heat dissipation pad, and the mass of the other components.
  • an energy storage cell that is, an ultracapacitor 110
  • an ultracapacitor 110 is inserted into the accommodating parts 518 and 618 formed between the case blocks, and the ultracapacitor 110 and the inner surface of the accommodating parts 518 and 618 are inserted into the accommodating part 518 and 618.
  • the heat dissipation pad 210 which contacts is attached.
  • the width of the heat dissipation pad 210 should be increased and thus the length of the arcs of the accommodating parts 518 and 618 must be increased at the same time. .
  • the center angle of the ultracapacitor 110 in contact with the heat dissipation pad 210 increases.
  • the depths of the recesses 512 and 612 formed on the outer surface of the case 200 between the adjacent ultracapacitors 110 are increased.
  • the left Y axis represents heat dissipation efficiency and the right Y axis represents product mass.
  • reference numeral 910 is a heat dissipation efficiency and reference numeral 920 is a graph of product mass.
  • the center angle ⁇ of the ultracapacitor 110 in contact with the heat radiation pad 210 is increased, the heat radiation efficiency of the energy storage device is improved.
  • the center angle ⁇ is 30 degrees or more, the heat dissipation efficiency is drastically improved than when the center angle ⁇ is less than 30 degrees.
  • the center angle ⁇ is 10 degrees
  • the heat radiation efficiency is 90.66%.
  • the center angle ⁇ is 30 degrees
  • the heat radiation efficiency is 97.28%.
  • the center angle ⁇ When the center angle ⁇ is 30 degrees, the heat radiation efficiency is very good.
  • the numbers indicated along the heat dissipation efficiency graph in FIG. 9 indicate an increase in heat dissipation efficiency per degree. For example, when the center angle ⁇ increases from 10 degrees to 20 degrees, the heat radiation efficiency increases by 0.36% point (3.6% ⁇ 10) per degree on average. When the central angle ⁇ increases from 20 degrees to 25 degrees, the heat dissipation efficiency increases by 0.30% point per degree on average. As shown in FIG. 9, the heat dissipation efficiency is greatly increased to the center angle ⁇ of 30 degrees, and the increase in heat dissipation efficiency is slowed at the central angle ⁇ . Therefore, the center angle ⁇ of the ultracapacitor 110 in contact with the heat radiation pad 210 is preferably 30 degrees or more.
  • the product mass of the energy storage device increases accordingly.
  • the reason is that the width of the heat dissipation pad 210 increases, so that the mass of the heat dissipation pad 210 increases, and the length of the arcs of the accommodating parts 518 and 618 also increases simultaneously, between the adjacent ultracapacitors 110.
  • the concave portions 512 and 612 formed on the outer surface of the case 200 are increased in depth to increase the mass of the case 200.
  • the product mass gradually increases until the center angle ⁇ becomes 60 degrees, but when the center angle ⁇ exceeds 60 degrees, the product mass rapidly increases.
  • the product mass increase rate at the center angle ⁇ exceeding 60 degrees is greater than the product mass increase rate at the center angle ⁇ below 60 degrees.
  • the numbers indicated along the product mass graph in FIG. 9 indicate the increase in product mass per degree. For example, when the center angle ⁇ increases from 10 degrees to 20 degrees, the product mass increases by 0.25% point (2.5% ⁇ 10) per degree. When the central angle ⁇ increases from 20 degrees to 22.5 degrees, the product mass increases by 0.23 percentage points per degree on average. As shown in FIG. 9, the product mass gradually increases up to 60 degrees of the central angle ⁇ , and the product mass rapidly increases when the central angle ⁇ exceeds 60 degrees.
  • the center angle ⁇ of the ultracapacitor 110 in contact with the heat radiation pad 210 is preferably 30 degrees to 60 degrees.
  • FIG. 10 is an enlarged view of a portion A of FIG. 2.
  • the distance 1010 between the case 200 and the ultracapacitor 110 gradually increases from the recesses 512 and 612 formed by folding the case 200 back. That is, the distance 1010 between the case 200 and the ultracapacitor 110 is gradually increased from the tips of the recesses 512 and 612.
  • the case 200 away from the adjacent concave portions 512 and 612 of a particular cell meets the case 200 away from the adjacent concave portions 512 and 612 of the neighboring cell at the convex connection portions 513 and 613. To achieve.
  • the heat dissipation pad 210 functions to insulate between the case 200 and the ultracapacitor 110 in addition to the heat dissipation function. From the portion where the heat dissipation pad 210 is not present, that is, the point at which the heat dissipation pad 210 ends, the distance 200 between the case 200 and the ultracapacitor 110 is indirectly increased, thereby indirectly the case 200 and the ultracapacitor 110. Insulation between them. As an insulation measure other than securing the insulation distance, an insulation film may be applied to the outer surface of each cell, or an insulation coating may be applied.
  • a space 1020 in which a harness for sensing and balancing is installed is formed between the neighboring ultracapacitor 110 and the case 200. The harness passes through this space 1020 and further heats up with the flow of air present in this space 1020.

Abstract

La présente invention concerne un dispositif de stockage d'énergie ayant une caractéristique de dissipation de chaleur améliorée. Le dispositif de stockage d'énergie, selon la présente invention, comporte: un ensemble de cellules formé par la connexion en série d'au moins deux cellules de stockage d'énergie de forme cylindrique; un boîtier comprenant une partie de réception en une forme correspondant à la surface latérale extérieure des cellules de stockage d'énergie pour recevoir l'ensemble de cellules; et un tampon de dissipation thermique disposé entre la surface latérale extérieure des cellules de stockage d'énergie de l'ensemble de cellules et la surface latérale interne de la partie de réception, le boîtier comprenant au moins deux blocs de boîtier et la partie de réception étant formée en par la combinaison des blocs du boîtier.
PCT/KR2015/006596 2014-08-19 2015-06-26 Dispositif de stockage d'energie ayant une caracteristique de dissipation de chaleur amelioree WO2016027978A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2017508672A JP6483239B2 (ja) 2014-08-19 2015-06-26 放熱特性が向上したエネルギー貯蔵装置
US15/503,765 US10115531B2 (en) 2014-08-19 2015-06-26 Energy storage device having improved heat-dissipation characteristic
CN201580044370.8A CN106663533B (zh) 2014-08-19 2015-06-26 散热特性得到改进的能量存储装置
EP15833889.7A EP3185265A4 (fr) 2014-08-19 2015-06-26 Dispositif de stockage d'énergie ayant une caractéristique de dissipation de chaleur améliorée

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20140107939 2014-08-19
KR10-2014-0107939 2014-08-19
KR10-2014-0179732 2014-12-12
KR1020140179732A KR20160022207A (ko) 2014-08-19 2014-12-12 방열 특성이 향상된 에너지 저장 장치
KR10-2015-0086880 2015-06-18
KR20150086880 2015-06-18

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WO2016027978A1 true WO2016027978A1 (fr) 2016-02-25

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CN108063048A (zh) * 2017-12-12 2018-05-22 珠海格力新元电子有限公司 母排及具有其的电容器
DE102019205491A1 (de) * 2019-04-16 2020-06-10 Siemens Aktiengesellschaft Anordnung zum Entwärmen eines Kondensators, Stromrichter und Fahrzeug

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US20100129703A1 (en) * 2007-04-24 2010-05-27 Olivier Caumont Module for an electric energy storage assembly
US20110090614A1 (en) * 2007-12-06 2011-04-21 Fabien Guerin Electrical power supply device comprising a tray for accommodating ultra-high capacity storage units
KR20120019845A (ko) * 2010-08-27 2012-03-07 삼성전기주식회사 슈퍼 커패시터 모듈
JP2013089735A (ja) * 2011-10-17 2013-05-13 Nippon Chemicon Corp キャパシタモジュールおよびその製造方法
KR20130093697A (ko) * 2011-12-23 2013-08-23 비나텍주식회사 대용량 슈퍼 커패시터용 모듈

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US20110090614A1 (en) * 2007-12-06 2011-04-21 Fabien Guerin Electrical power supply device comprising a tray for accommodating ultra-high capacity storage units
KR20120019845A (ko) * 2010-08-27 2012-03-07 삼성전기주식회사 슈퍼 커패시터 모듈
JP2013089735A (ja) * 2011-10-17 2013-05-13 Nippon Chemicon Corp キャパシタモジュールおよびその製造方法
KR20130093697A (ko) * 2011-12-23 2013-08-23 비나텍주식회사 대용량 슈퍼 커패시터용 모듈

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CN108063048A (zh) * 2017-12-12 2018-05-22 珠海格力新元电子有限公司 母排及具有其的电容器
CN108063048B (zh) * 2017-12-12 2024-02-27 珠海格力新元电子有限公司 母排及具有其的电容器
DE102019205491A1 (de) * 2019-04-16 2020-06-10 Siemens Aktiengesellschaft Anordnung zum Entwärmen eines Kondensators, Stromrichter und Fahrzeug

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