EP4453980A1 - A method for manufacturing an energy storage cell - Google Patents

A method for manufacturing an energy storage cell

Info

Publication number
EP4453980A1
EP4453980A1 EP22835613.5A EP22835613A EP4453980A1 EP 4453980 A1 EP4453980 A1 EP 4453980A1 EP 22835613 A EP22835613 A EP 22835613A EP 4453980 A1 EP4453980 A1 EP 4453980A1
Authority
EP
European Patent Office
Prior art keywords
interior
cell
electrode assembly
protrusion
top opening
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP22835613.5A
Other languages
German (de)
French (fr)
Inventor
Max Günther
Daniel WEINGARTH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skeleton Technologies GmbH
Original Assignee
Skeleton Technologies GmbH
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.)
Filing date
Publication date
Priority claimed from DE102022100863.0A external-priority patent/DE102022100863A1/en
Application filed by Skeleton Technologies GmbH filed Critical Skeleton Technologies GmbH
Publication of EP4453980A1 publication Critical patent/EP4453980A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G11/80—Gaskets; Sealings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/18—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

Definitions

  • the invention relates to a method for manufacturing an energy storage cell, e.g. an ultracapcitor, and an energy storage cell.
  • energy storage cells are manufactured as pouch cells.
  • the cells are manufactured using cylindrical cans, for example, for the convenience of mass production.
  • the cans have an o- pening on both sides.
  • the bottom opening is closed by a current tab that is welded to the can and the electrodes.
  • the object of the invention is to provide an improved manufacturing method that preferably allows for reduced effort in manufacturing.
  • the invention provides a method for manufacturing an energy storage cell, such as an ultracapacitor, the method comprising: a) providing a piece of metal material; b) forming the metal material into a cell body that has a bottom portion, a wall portion, and a top opening; c) introducing through the top opening an electrode assembly; d) closing the top opening with a lid assembly thereby forming a cell interior that contains the electrode assembly; and e) fixing the lid assembly to the cell body.
  • step a) comprises providing the piece of metal material by cutting off a piece of an aluminium wire.
  • the cell body is formed by impact extrusion or powerpress extrusion.
  • the method includes welding the electrode assembly to the bottom portion.
  • the welding performed from the exterior through the bottom portion.
  • the bottom portion is formed with at least one exterior channel that preferably includes an exterior channel portion that is configured to engage the electrode assembly.
  • step c) the electrode assembly is introduced so as to engage the exterior channel portion.
  • the exterior channel has an exterior channel base and a first and second exterior channel wall portion protruding from the channel base, and preferably the exterior channel portion is formed on the channel base.
  • step d) the electrode assembly is welded to the exterior channel portion.
  • the welding is ultrasonic welding or electric welding.
  • an electrolyte is filled through the top opening or the lid assembly.
  • the welding to the bottom portion is done before filling the electrolyte.
  • the method includes introducing a top current collector so as to engage the electrode assembly.
  • the top current collector is welded to the electrode assembly through the lid assembly.
  • the bottom portion is formed with at least one interior channel that is configured to fluidly connect a central portion of the cell interior with a peripheral portion of the cell interior.
  • the bottom portion is formed with a bottom protrusion that protrudes outside the cell body in an axial direction.
  • the bottom protrusion is formed with an interior cavity that is o- pen towards the cell interior.
  • the interior cavity is fluidly connected to the at least one interior channel.
  • the bottom protrusion is formed in the center of the bottom portion and the at least one interior channel extends from the bottom protrusion in a radial direction.
  • the at least one interior channel is tapered such that a width of the interior channel increases with distance from the center of the bottom portion.
  • the bottom protrusion is formed in the center of the bottom portion and the at least one exterior channel extends from the bottom protrusion in a radial direction.
  • the wall portion is formed with a top portion that has an annular protrusion that protrudes from the wall portion radially inward and extends along the circumferential direction.
  • the lid assembly comprises an electrically insulating sealing that is arranged to engage the annular protrusion, and wherein in step e) the top portion is crimped radially inward so as to contact the sealing and lock the lid assembly in place.
  • the invention provides an energy storage cell, e.g. an ultracapacitor, obtainable by a previously described method.
  • the cell can be manufactured faster due to a reduced number of steps. Furthermore, it is easier to fill the cell body with liquid electrolyte through the large opening, which is further facilitated by the hollow portion of the electrode assembly.
  • the effective series resistance (ESR) can be reduced by directly contacting the electrode assembly to the respective electrical terminal, at least on the bottom. As a result, the cells described herein can be manufactured in larger quantity and/or with an improved ESR.
  • Fig. 1 depicts an embodiment of a manufacturing method in a cross- sectional view
  • Fig. 2 depicts a bottom perspective view of an energy storage cell
  • Fig. 3 depicts a cross section through the bottom of the energy storage cell of Fig. 2.
  • a piece of metal material 10 e.g. an aluminium metal wire cut-off or aluminium sheet material.
  • the wire may have a substantial diameter of tens of milimeters.
  • the metal material 10 is pressed by a punch into a die in a power-press extrusion process. This process is sometimes also called impact extrusion. The forces exerted on the metal material 10 cause it to deform into a cell body 12.
  • the cell body 12 has an overall cylindrical shape.
  • the cell body 12 has a top opening 14, a wall portion 16, and a bottom portion 18.
  • the bottom portion 18 is formed with a bottom protrusion 20. When viewed from the side, the bottom protrusion 20 protrudes downwards and is exceeds the remaining bottom portion 18 in the downward direction.
  • the bottom protrusion 20 is arranged in the center of the bottom portion 18.
  • the bottom protrusion 20 is formed with a cavity 22 that faces towards the top opening 14.
  • the bottom portion 18 is formed with a plurality of exterior channel portions 24.
  • the exterior channel portion 24 comprises an exterior channel base 26 that extends in a transverse plane of the cell body 12. When viewed from the side, the exterior channel base 26 is recessed relative to the bottom protrusion 20.
  • the exterior channel portion 24 extends from the center, e.g. the bottom protrusion 20, along the radial direction of the cell body 12 to the periphery of the cell body 12.
  • Neighboring exterior channel portions 24 are spaced apart by an intermediate portion 28.
  • the intermediate portion 28 is preferably roughly formed as a circular sector. When viewed from the side, the surface of the intermediate portion 28 is formed between the bottom surface of the bottom protrusion 20 and the surface of the exterior channel base 26 along the vertical direction.
  • each exterior channel portion 24 is substantially U-shaped.
  • the base of the U is formed by the exterior channel base 26 and each leg of the U is formed by a vertical portion 30 that extends from the exterior channel base 26 in a vertical direction to the intermediate surface portion 28.
  • the bottom portion 18 is formed with at least one interior channel 32.
  • the interior channel 32 is fluidly connected to the cavity 22.
  • the interior channel 32 thus fluidly connects the centor of the cell body 12 with its periphery.
  • the interior channel 32 is defined on one side by the intermediate portion 28 and on two sides by the vertical portions 30.
  • the interior channel 32 is at least partially open towards the top opening 14.
  • the cell body 12 may be formed with an annular protrusion 34 near the top opening 14.
  • the electrode assembly 36 is a wound layer structure that comprises a first electrode with an active material and a second electrode with an active material that are separated by a porous separator.
  • the electrode assembly 36 comprises a central hollow portion 38.
  • the electrode assembly 36 is introduced such that the electrode assembly 36, e.g. the first electrode, engages the exterior channel base 26.
  • the electrode assembly 36 When the electrode assembly 36 is in position, it can be welded to the bottom portion 18, i.e. the exterior channel base 26.
  • the welding is preferably ultrasonic welding.
  • the welding device e.g. sonotrode, is brought in contact from the exterior with the exterior channel base 26 and, where applicable, moved along the exterior channel portion 24 thereby attaching the first electrode to the bottom portion 18.
  • a suitable electrolyte 40 is filled into the cell body 12 through the top opening 14 and preferably through the hollow portion 38.
  • a lid assembly 42 is introduced through the top opening 14 and, if applicable, engages the annular protrusion 34.
  • the lid assembly 42 includes a sealing that provides electrical and liquid insulation.
  • the lid assembly 42 is fixed to the cell body 12 by crimping the excess wall portion above the lid assembly 42. Furthermore, the lid assembly 42 engages the electrode assembly 36, e.g. the second electrode. The lid assembly 42 is then welded to the electrode assembly 36, preferably again with ultrasonic welding, thereby completing an energy storage cell 44.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

A method for manufacturing an energy storage cell (44), such as an ultracapacitor, comprises the steps of: a) providing a metal material (10); b) forming the metal material (10) into a cell body (12) that has a bottom portion (18), a wall portion (16), and a top opening (14); c) introducing through the top opening an electrode assembly (36); d) closing the top opening (14) with a lid assembly (42) thereby forming a cell interior that contains the electrode assembly (36); and e) fixing the lid assembly (42) to the cell body (12), wherein the bottom portion (18) is formed with e.g. - at least one exterior channel portion (24) that includes an exterior channel base portion (26) that is configured to engage the electrode assembly (36) and - at least one interior channel (32) that is configured to fluidly connect a central portion of the cell interior with a peripheral portion of the cell interior - with a bottom protrusion (20) that protrudes outside the cell body (12) in an axial direction

Description

A method for manufacturing an energy storage cell
The invention relates to a method for manufacturing an energy storage cell, e.g. an ultracapcitor, and an energy storage cell.
Typically, in a lab setting, energy storage cells are manufactured as pouch cells. In some industrial applications the cells are manufactured using cylindrical cans, for example, for the convenience of mass production. The cans have an o- pening on both sides. The bottom opening is closed by a current tab that is welded to the can and the electrodes.
The object of the invention is to provide an improved manufacturing method that preferably allows for reduced effort in manufacturing.
The object is achieved by the subject-matter of the independent claims. Preferred embodiments are subject-matter of the dependent claims.
The invention provides a method for manufacturing an energy storage cell, such as an ultracapacitor, the method comprising: a) providing a piece of metal material; b) forming the metal material into a cell body that has a bottom portion, a wall portion, and a top opening; c) introducing through the top opening an electrode assembly; d) closing the top opening with a lid assembly thereby forming a cell interior that contains the electrode assembly; and e) fixing the lid assembly to the cell body.
Preferably, step a) comprises providing the piece of metal material by cutting off a piece of an aluminium wire.
Preferably, in step b) the cell body is formed by impact extrusion or powerpress extrusion.
Preferably, the method includes welding the electrode assembly to the bottom portion. Preferably, the welding performed from the exterior through the bottom portion.
Preferably, in step b) the bottom portion is formed with at least one exterior channel that preferably includes an exterior channel portion that is configured to engage the electrode assembly.
Preferably, in step c) the electrode assembly is introduced so as to engage the exterior channel portion.
Preferably, the exterior channel has an exterior channel base and a first and second exterior channel wall portion protruding from the channel base, and preferably the exterior channel portion is formed on the channel base.
Preferably, in step d) the electrode assembly is welded to the exterior channel portion.
Preferably, the welding is ultrasonic welding or electric welding.
Preferably, an electrolyte is filled through the top opening or the lid assembly.
Preferably, the welding to the bottom portion is done before filling the electrolyte.
Preferably, the method includes introducing a top current collector so as to engage the electrode assembly.
Preferably, the top current collector is welded to the electrode assembly through the lid assembly.
Preferably, in step b) the bottom portion is formed with at least one interior channel that is configured to fluidly connect a central portion of the cell interior with a peripheral portion of the cell interior.
Preferably, in step b) the bottom portion is formed with a bottom protrusion that protrudes outside the cell body in an axial direction.
Preferably, the bottom protrusion is formed with an interior cavity that is o- pen towards the cell interior. Preferably, the interior cavity is fluidly connected to the at least one interior channel.
Preferably, the bottom protrusion is formed in the center of the bottom portion and the at least one interior channel extends from the bottom protrusion in a radial direction. Preferably, the at least one interior channel is tapered such that a width of the interior channel increases with distance from the center of the bottom portion.
Preferably, in step b) the bottom protrusion is formed in the center of the bottom portion and the at least one exterior channel extends from the bottom protrusion in a radial direction.
Preferably, the wall portion is formed with a top portion that has an annular protrusion that protrudes from the wall portion radially inward and extends along the circumferential direction.
Preferably, the lid assembly comprises an electrically insulating sealing that is arranged to engage the annular protrusion, and wherein in step e) the top portion is crimped radially inward so as to contact the sealing and lock the lid assembly in place.
The invention provides an energy storage cell, e.g. an ultracapacitor, obtainable by a previously described method.
The cell can be manufactured faster due to a reduced number of steps. Furthermore, it is easier to fill the cell body with liquid electrolyte through the large opening, which is further facilitated by the hollow portion of the electrode assembly. In addition the effective series resistance (ESR) can be reduced by directly contacting the electrode assembly to the respective electrical terminal, at least on the bottom. As a result, the cells described herein can be manufactured in larger quantity and/or with an improved ESR.
It should be noted that while the invention is described with reference to a cylindrical cell, it is possible to apply the invention to other shapes such as prismatic (cuboid) cells.
Embodiments of the invention are described in more detail with reference to the accompanying schematic drawings that are listed below
Fig. 1 depicts an embodiment of a manufacturing method in a cross- sectional view;
Fig. 2 depicts a bottom perspective view of an energy storage cell; and
Fig. 3 depicts a cross section through the bottom of the energy storage cell of Fig. 2. Referring to Fig. 1 to Fig. 3, a piece of metal material 10, e.g. an aluminium metal wire cut-off or aluminium sheet material, is provided. The wire may have a substantial diameter of tens of milimeters. The metal material 10 is pressed by a punch into a die in a power-press extrusion process. This process is sometimes also called impact extrusion. The forces exerted on the metal material 10 cause it to deform into a cell body 12.
The cell body 12 has an overall cylindrical shape. The cell body 12 has a top opening 14, a wall portion 16, and a bottom portion 18. The bottom portion 18 is formed with a bottom protrusion 20. When viewed from the side, the bottom protrusion 20 protrudes downwards and is exceeds the remaining bottom portion 18 in the downward direction.
The bottom protrusion 20 is arranged in the center of the bottom portion 18. The bottom protrusion 20 is formed with a cavity 22 that faces towards the top opening 14.
The bottom portion 18 is formed with a plurality of exterior channel portions 24. The exterior channel portion 24 comprises an exterior channel base 26 that extends in a transverse plane of the cell body 12. When viewed from the side, the exterior channel base 26 is recessed relative to the bottom protrusion 20. The exterior channel portion 24 extends from the center, e.g. the bottom protrusion 20, along the radial direction of the cell body 12 to the periphery of the cell body 12.
Neighboring exterior channel portions 24 are spaced apart by an intermediate portion 28. The intermediate portion 28 is preferably roughly formed as a circular sector. When viewed from the side, the surface of the intermediate portion 28 is formed between the bottom surface of the bottom protrusion 20 and the surface of the exterior channel base 26 along the vertical direction.
Preferably, each exterior channel portion 24 is substantially U-shaped. The base of the U is formed by the exterior channel base 26 and each leg of the U is formed by a vertical portion 30 that extends from the exterior channel base 26 in a vertical direction to the intermediate surface portion 28.
The bottom portion 18 is formed with at least one interior channel 32. The interior channel 32 is fluidly connected to the cavity 22. The interior channel 32 thus fluidly connects the centor of the cell body 12 with its periphery. The interior channel 32 is defined on one side by the intermediate portion 28 and on two sides by the vertical portions 30. The interior channel 32 is at least partially open towards the top opening 14.
The cell body 12 may be formed with an annular protrusion 34 near the top opening 14.
Subsequent to forming the cell body 12, an electrode assembly 36 is introduced through the top opening 14. The electrode assembly 36 is only briefly described, as it is known per se. The electrode assembly 36 is a wound layer structure that comprises a first electrode with an active material and a second electrode with an active material that are separated by a porous separator. The electrode assembly 36 comprises a central hollow portion 38.
The electrode assembly 36 is introduced such that the electrode assembly 36, e.g. the first electrode, engages the exterior channel base 26. When the electrode assembly 36 is in position, it can be welded to the bottom portion 18, i.e. the exterior channel base 26. The welding is preferably ultrasonic welding. The welding device, e.g. sonotrode, is brought in contact from the exterior with the exterior channel base 26 and, where applicable, moved along the exterior channel portion 24 thereby attaching the first electrode to the bottom portion 18.
Subsequently, a suitable electrolyte 40 is filled into the cell body 12 through the top opening 14 and preferably through the hollow portion 38.
A lid assembly 42 is introduced through the top opening 14 and, if applicable, engages the annular protrusion 34. The lid assembly 42 includes a sealing that provides electrical and liquid insulation.
The lid assembly 42 is fixed to the cell body 12 by crimping the excess wall portion above the lid assembly 42. Furthermore, the lid assembly 42 engages the electrode assembly 36, e.g. the second electrode. The lid assembly 42 is then welded to the electrode assembly 36, preferably again with ultrasonic welding, thereby completing an energy storage cell 44. List of reference signs: metal material cell body top opening wall portion bottom portion bottom protrusion cavity exterior channel portion exterior channel base intermediate portion vertical portion interior channel annular protrusion electrode assembly central hollow portion electrolyte lid assembly energy storage cell

Claims

7
Claims
1 . A method for manufacturing an energy storage cell (44), such as an ultracapacitor, the method comprising: a) providing a piece of metal material (10); b) forming the metal material (10) into a cell body (12) that has a bottom portion (18), a wall portion (16), and a top opening (14); c) introducing through the top opening an electrode assembly (36); d) closing the top opening (14) with a lid assembly (42) thereby forming a cell interior that contains the electrode assembly (36); and e) fixing the lid assembly (42) to the cell body (12).
2. The method according to claim 1 , wherein in step b) the cell body (12) is formed by power-press extrusion.
3. The method according to any of the preceding claims, wherein the method includes welding the electrode assembly (36) to the bottom portion (18).
4. The method according to any of the preceding claims, wherein in step b) the bottom portion (18) is formed with at least one exterior channel portion (24) that includes an exterior channel base portion (26) that is configured to engage the electrode assembly (36).
5. The method according to claim 4, wherein in step c) the electrode assembly (36) is introduced so as to engage the exterior channel base portion (26).
6. The method according to any of the preceding claims, wherein an electrolyte (40) is filled through the top opening (14) or the lid assembly (42). 8
7. The method according to any of the preceding claims, wherein the method includes introducing a top current collector so as to engage the electrode assembly (36).
8. The method according to any of the preceding claims, wherein in step b) the bottom portion (18) is formed with at least one interior channel (32) that is configured to fluidly connect a central portion of the cell interior with a peripheral portion of the cell interior.
9. The method according to any of the preceding claims, wherein in step b) the bottom portion (18) is formed with a bottom protrusion (20) that protrudes outside the cell body (12) in an axial direction.
10. The method according to claim 9, wherein the bottom protrusion (20) is formed with an interior cavity (22) that is open towards the cell interior, wherein the interior cavity is fluidly connected to the at least one interior channel.
11 . The method according to any of the claims 9 or 10, wherein the bottom protrusion (20) is formed in the center of the bottom portion (18) and the at least one interior channel extends from the bottom protrusion (20) in a radial direction.
12. The method according to any of the claims 9 to 11 , wherein in step b) the bottom protrusion (20) is formed in the center of the bottom portion (18) and the at least one exterior channel portion (24) extends from the bottom protrusion (20) in a radial direction.
13. The method according to any of the preceding claims, wherein the wall portion (16) is formed with a top portion that has an annular protrusion (34) that protrudes from the wall portion (16) radially inward and extends along the circumferential direction.
14. The method according to claim 13, wherein the lid assembly comprises an electrically insulating sealing that is arranged to engage the annular protrusion 9
(34), and wherein in step e) the top portion (14) is crimped radially inward so as to contact the sealing and lock the lid assembly (42) in place.
15. An energy storage cell (44), e.g. an ultracapacitor, obtainable by a method according to any of the preceding claims.
EP22835613.5A 2021-12-23 2022-12-09 A method for manufacturing an energy storage cell Pending EP4453980A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102021134619 2021-12-23
DE102022100863.0A DE102022100863A1 (en) 2021-12-23 2022-01-14 Method of manufacturing an energy storage cell
PCT/EP2022/085171 WO2023117487A1 (en) 2021-12-23 2022-12-09 A method for manufacturing an energy storage cell

Publications (1)

Publication Number Publication Date
EP4453980A1 true EP4453980A1 (en) 2024-10-30

Family

ID=84367207

Family Applications (5)

Application Number Title Priority Date Filing Date
EP25161410.3A Pending EP4539216A3 (en) 2021-12-23 2022-12-06 A method for manufacturing a supercapacitor
EP22211818.4A Pending EP4202962A1 (en) 2021-12-23 2022-12-06 A method for manufacturing a supercapacitor
EP25162325.2A Pending EP4542739A3 (en) 2021-12-23 2022-12-06 A current tab member for an electrode assembly of an energy storage cell, kit-of-parts and energy storage cell comprising the current tab member
EP25162322.9A Pending EP4542738A3 (en) 2021-12-23 2022-12-06 A lid assembly for an energy storage cell, kit-of-parts and energy storage cell comprising the lid assembly
EP22835613.5A Pending EP4453980A1 (en) 2021-12-23 2022-12-09 A method for manufacturing an energy storage cell

Family Applications Before (4)

Application Number Title Priority Date Filing Date
EP25161410.3A Pending EP4539216A3 (en) 2021-12-23 2022-12-06 A method for manufacturing a supercapacitor
EP22211818.4A Pending EP4202962A1 (en) 2021-12-23 2022-12-06 A method for manufacturing a supercapacitor
EP25162325.2A Pending EP4542739A3 (en) 2021-12-23 2022-12-06 A current tab member for an electrode assembly of an energy storage cell, kit-of-parts and energy storage cell comprising the current tab member
EP25162322.9A Pending EP4542738A3 (en) 2021-12-23 2022-12-06 A lid assembly for an energy storage cell, kit-of-parts and energy storage cell comprising the lid assembly

Country Status (3)

Country Link
EP (5) EP4539216A3 (en)
DE (1) DE102022132405A1 (en)
WO (1) WO2023117487A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4383301A3 (en) * 2022-11-09 2024-08-07 Skeleton Technologies GmbH Process for manufacturing a supercapacitor, in particular electrolyte injection
DE102022132406A1 (en) * 2022-12-06 2024-06-06 Skeleton Technologies GmbH Current collector element for an electrode assembly of an energy storage cell, kit and energy storage cell with the current collector element
DE102022132404A1 (en) * 2022-12-06 2024-06-06 Skeleton Technologies GmbH Cover assembly for an energy storage cell, kit and energy storage cell with the cover assembly
EP4507070A1 (en) * 2023-08-07 2025-02-12 Skeleton Technologies GmbH Thermal management assembly for an energy storage cell and energy storage cell equipped therewith
EP4507078A1 (en) * 2023-08-07 2025-02-12 Skeleton Technologies GmbH Current tab assembly for an energy storage cell and energy storage cell equipped therewith
WO2025233244A1 (en) 2024-05-08 2025-11-13 Skeleton Technologies GmbH Methods for manufacturing an ultracapacitor with improved energy density
EP4664498A1 (en) 2024-06-11 2025-12-17 Skeleton Technologies GmbH A method for welding at least one cell component to an electrode assembly of an energy storage cell

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105065B (en) 1956-11-23 1961-04-20 Sueddeutscher Kondensatorenbau Electric capacitor in a housing that consists of two separate rooms
FR1439148A (en) 1965-04-06 1966-05-20 Thomson Houston Comp Francaise Improvements to waterproof enclosures for electrical devices
JP2577818Y2 (en) 1992-02-14 1998-08-06 ニチコン株式会社 Electrolytic capacitor
JP3598548B2 (en) * 1994-11-10 2004-12-08 いすゞ自動車株式会社 Multilayer electric double layer capacitors
JP2002141099A (en) 2000-10-31 2002-05-17 Sanyo Electric Co Ltd Sealed battery
US6813139B2 (en) * 2001-11-02 2004-11-02 Maxwell Technologies, Inc. Electrochemical double layer capacitor having carbon powder electrodes
RU2329257C2 (en) * 2003-07-01 2008-07-20 Оцука Кемикал Ко., Лтд. Electrolyte, electrolytic mixture and solution, condenser, secondary lithium cell and method of obtaining quaternary ammonium salt
JP3709197B2 (en) * 2003-08-25 2005-10-19 松下電器産業株式会社 Cylindrical battery and manufacturing method thereof
FR2871615B1 (en) * 2004-06-11 2006-09-08 Batscap Sa SUPERCONDENSER COVER WITH INTEGRATED CENTRAL TERMINAL
CN104064362A (en) * 2005-09-22 2014-09-24 本田技研工业株式会社 Polarizable Electrode And Electrical Double Layer Capacitor
JP5034204B2 (en) * 2005-09-29 2012-09-26 パナソニック株式会社 Method for manufacturing power storage element
KR100786871B1 (en) * 2006-07-27 2007-12-20 삼성에스디아이 주식회사 Secondary battery
KR100882915B1 (en) * 2007-07-03 2009-02-10 삼성에스디아이 주식회사 Secondary battery
JP2009211909A (en) * 2008-03-04 2009-09-17 Panasonic Corp Battery, battery pack, and method of manufacturing connection terminals used therefor
US8147999B2 (en) * 2008-06-11 2012-04-03 Eveready Battery Company, Inc. Closure assembly with low vapor transmission for electrochemical cell
KR101839158B1 (en) * 2009-10-13 2018-03-15 파워지닉스 시스템즈, 인코포레이티드 Cylindrical Nickel-Zinc Cell with Positive Can
JP2011204724A (en) 2010-03-24 2011-10-13 Hitachi Aic Inc Electrolytic capacitor
US8488301B2 (en) * 2011-02-28 2013-07-16 Corning Incorporated Ultracapacitor package design having slideably engagable bent tabs
KR102762495B1 (en) * 2012-02-24 2025-02-05 패스트캡 시스템즈 코포레이션 Advanced electrolyte systems and their use in energy storage devices
CN102856084B (en) * 2012-08-28 2015-08-19 苏州工业园区和顺电气股份有限公司 Treatment method for vacuum drying and impregnation of capacitors
CN202796465U (en) * 2012-09-13 2013-03-13 江苏集盛星泰新能源科技有限公司 Super capacitor with positive electrode and negative electrode at same end
US9293268B2 (en) * 2013-11-22 2016-03-22 Corning Incorporated Ultracapacitor vacuum assembly
WO2015146078A1 (en) * 2014-03-28 2015-10-01 三洋電機株式会社 Cylindrical sealed battery and battery pack
CN204216139U (en) * 2014-10-30 2015-03-18 欧可行 Energy storage device
WO2017201173A1 (en) * 2016-05-20 2017-11-23 Avx Corporation Nonaqueous electrolyte for an ultracapacitor
EP4037076A4 (en) * 2019-09-26 2023-03-08 Panasonic Intellectual Property Management Co., Ltd. Power storage pack

Also Published As

Publication number Publication date
WO2023117487A1 (en) 2023-06-29
EP4542739A2 (en) 2025-04-23
EP4539216A3 (en) 2025-12-10
EP4542738A3 (en) 2025-07-02
EP4202962A1 (en) 2023-06-28
DE102022132405A1 (en) 2024-06-06
EP4542739A3 (en) 2025-07-09
EP4542738A2 (en) 2025-04-23
EP4539216A2 (en) 2025-04-16

Similar Documents

Publication Publication Date Title
EP4453980A1 (en) A method for manufacturing an energy storage cell
EP4175030A1 (en) Cylindrical battery cell, and battery pack and vehicle comprising same
US7016178B2 (en) Capacitor housing
EP4024574B1 (en) Laser welded lithium-ion button cell battery comprising a top plate
KR20110124269A (en) Button batteries and how to make them
KR20150112879A (en) Electrochemical energy storage device with flexible metal contact current collector and methods of manufacture
KR102545593B1 (en) Cylindrical secondary battery and manufacturing method of secondary battery
KR102577169B1 (en) Cylindrical secondary battery
JPH0346754A (en) battery
KR20220155017A (en) Secondary Battery
KR20220162580A (en) Cylindrical battery can assembly and its manufacturing method
KR20150101864A (en) Secondary battery
KR101038115B1 (en) Cylindrical battery
CN218005146U (en) Battery, battery pack comprising same and automobile
EP4250440B1 (en) Cylindrical battery
JP2004235036A (en) Battery
KR20190131794A (en) The Secondary Battery
KR102824566B1 (en) Cylindrical secondary battery
EP4250441A1 (en) Cylindrical battery
KR102666014B1 (en) Method of manufacturing cylindricality can for secondary battery and secondary battery comprising the same
CN111354916A (en) Electric connection method, electric connection structure and product of button cell pole shell and electrode lug
JP2008084650A (en) Cylindrical storage battery and its manufacturing method
EP4734202A1 (en) Secondary battery, secondary battery manufacturing apparatus and method
US20260074328A1 (en) Secondary battery, secondary battery crimping device, and crimping method using the same
JP4090181B2 (en) Battery connection structure and connection method

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20240603

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SKELETON TECHNOLOGIES GMBH

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SKELETON TECHNOLOGIES GMBH