WO2023213489A1 - Verfahren zum herstellen einer elektrochemischen festkörper-energiespeicherzelle und festkörper-energiespeicherzelle - Google Patents
Verfahren zum herstellen einer elektrochemischen festkörper-energiespeicherzelle und festkörper-energiespeicherzelle Download PDFInfo
- Publication number
- WO2023213489A1 WO2023213489A1 PCT/EP2023/058958 EP2023058958W WO2023213489A1 WO 2023213489 A1 WO2023213489 A1 WO 2023213489A1 EP 2023058958 W EP2023058958 W EP 2023058958W WO 2023213489 A1 WO2023213489 A1 WO 2023213489A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- energy storage
- storage unit
- solid
- casing
- storage cell
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- 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
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/136—Flexibility or foldability
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the invention relates to a method for producing an electrochemical solid-state energy storage cell and an associated electrochemical solid-state energy storage cell.
- Energy storage cells are typically used in mobile devices such as motor vehicles to supply them with electrical energy.
- Known energy storage cells often contain liquid electrolytes.
- energy storage cells are currently being developed that are to be formed exclusively with solids.
- current versions use stacked electrodes and separators, which are connected in the form of individual sheets to form a stack. To produce such an energy storage cell, it is typically necessary to apply very high pressures to such a stack in order to ensure a very tight bond between the interfaces of the individual layers. It has turned out that such high pressures are very difficult to achieve.
- the invention relates to a method for producing an electrochemical solid-state energy storage cell, the method having the following steps:
- the sleeve can be used to easily apply pressure to the energy storage unit.
- the energy storage unit is typically the element that stores electrical energy in the finished solid-state energy storage cell.
- the solid electrochemically active layers typically form the electrochemically active part in the finished energy storage cell, so that electrical energy can be stored.
- the energy storage unit can be electrically charged and discharged.
- the shell at least partially encloses this energy storage unit.
- the casing can enclose the energy storage unit along a circumference.
- the casing can be designed in different ways to reduce the circumference, with typical designs being discussed further below.
- the energy storage unit can be cylindrical. This allows the energy storage unit to be compressed radially and uniformly by the casing, which in particular can have an at least substantially annular cross section.
- the casing can have a completely or at least predominantly circular cross section before insertion.
- it can correspond particularly well to a cylindrical cross section of the energy storage unit.
- a circular cross section one can also speak of an annular cross section.
- the circular, cylindrical or annular cross-sections are typically retained during the reduction in circumference and typically also in the finished solid-state energy storage cell. This allows a simple procedure, whereby uniform pressure can be exerted on the energy storage unit by reducing the circumference of the casing.
- the energy storage unit can in particular be compressed radially. This can be done in a uniform or at least substantially uniform manner, in particular along an axial extent of the energy storage unit.
- the layers are spiral-shaped in cross section.
- the layers are circular in cross section. In the case of a spiral-shaped design, these can in particular be wound continuously from the inside out. In the case of a circular design, in particular several self-contained layers can be placed on top of each other, which also results in a radial increase.
- one or more projections are formed in the casing, and the circumference can be reduced in particular by compressing one or more projections.
- the projection or projections can in particular project radially outwards. This allows easy gripping and squeezing of the projections.
- the projection or projections can be compressed along the circumference. This allows a particularly simple reduction in circumference.
- the casing can in particular be formed entirely or partially from a plastically deformable material.
- the sleeve is provided with an axially extending interruption, a first free end and a second free end opposing one another at the axially extending interruption.
- the circumference can be reduced in particular by attaching the first free end and the second free end to one another.
- a reduction in scope can also be achieved in a simple and practical manner, whereby typically in an initial state the interruption can be viewed as part of the scope.
- the overall circumference is reduced.
- an overlap of the first free end and the second free end can be created before attachment. In this state, the two free ends can be attached to each other. This allows an even further reduction in circumference to be achieved.
- the two free ends can also be attached to one another at the same radial position.
- the attachment can be produced by welding.
- the two free ends can be connected to one another by welding. This has proven to be a viable method of attachment.
- other types are also possible.
- the cover is made entirely or partially from an elastic material.
- an inward force can be generated in an advantageous manner.
- the elastic material can exert an inward force due to the elasticity.
- the energy storage unit has a solid core around which the layers are wound.
- a solid core can define an interior of the energy storage unit and form a basis for winding or otherwise applying the layers already mentioned.
- the fixed core can serve as a counterpart when exerting an inward force.
- the solid core can in particular be made of a non-deformable material.
- the invention further relates to an electrochemical solid-state energy storage cell, which was produced using a method described herein. Regarding the method, all embodiments described herein can be used.
- the electrochemically active layers can be electrodes and separators. Electrodes are typically connected to external energy supplying and/or energy consuming units so that the solid state electrochemical energy storage cell can be charged and release energy for useful use. Separators typically separate the electrodes from each other.
- the shell can in particular form a cell shell in the finished energy storage cell. This means that no additional application of a cover is required. Rather, the shell used anyway as part of the described method for applying a force can also remain in the finished energy storage cell as a cell shell. In particular, it can perform a protective function for the energy storage cell.
- a shell can be designed as a structure that allows changes in the circumference in a partial area.
- this section can only be pretensioned after inserting an energy storage unit, which is, for example, an electrode stack or electrode coil (jelly roll).
- the prestressing is carried out, for example, by plastic deformation or a welded connection that is carried out under prestressing.
- the entire cell jacket is made from a material that has a corresponding elongation under the required pressures.
- the energy storage unit can be wrapped in the casing material during the production process and an over-lap closure can be carried out under compression.
- An energy storage unit typically has a core hole in which a winding mandrel or core can be located.
- an energy storage unit can be used, which is wound on a sleeve which remains in the energy storage unit. Since no liquid electrolytes are typically used in the present embodiments, cover assemblies can typically be omitted. Sealing the system against water can be solved at the module or storage level.
- Fig. 1 a manufacturing state of a solid-state energy storage cell according to a first exemplary embodiment
- Fig. 2 a manufacturing state of a solid-state energy storage cell according to a second exemplary embodiment.
- FIG. 1 shows an electrochemical solid-state energy storage cell 10 according to a first exemplary embodiment in a manufacturing state.
- a core 12 is arranged on the inside, which consists of a solid material. Radially on the outside there is a cylindrical energy storage unit 20, which is composed of spirally wound layers 22, 24.
- a first layer contains 22 electrodes and a second layer 24 contains a separator. It should be understood that this is only a purely schematic representation.
- a shell 30 on the radial outside of the energy storage unit 20 is made of a plastically deformable material and has a first projection 32 and a second projection 34, each of which protrudes outwards.
- the case 30 is positioned around the energy storage unit 20 so that the case 30 at least substantially along the circumference of the energy storage unit 20.
- the two projections 32, 34 are then compressed along the circumference, so that the overall circumference of the casing 30 is reduced. This reduction in circumference exerts a radially inward force on the energy storage unit 20, which serves to produce or improve the electrochemical properties. Due to the already mentioned plastically deformable properties of the casing 30, this force is retained even in the finished state.
- the shell 30 can therefore also be used as a cell shell for the finished energy storage cell 10.
- the sleeve 30 is made of an elastically deformable material and has no projections, but rather has an interruption 35 at which a first free end 36 and a second free end 38 lie opposite one another.
- the entire circumference of the casing 30, including the interruption 35, is therefore larger than that of a casing 30 that is continuous in terms of material.
- the free ends 36, 38 can then be fastened to one another, and an overlap can also be used.
- the entire circumference of the casing 30 is thus reduced, which in turn exerts a radially inward force on the energy storage unit 20. This also causes the energy storage unit 20 to be compressed.
- the elastically deformable property of the shell 30 ultimately creates a balance between outward and inward pressures, which leads to a compression of the energy storage unit 20. Compared to known designs, which require external machines to exert pressure, the described designs achieve a much simpler process.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Dispersion Chemistry (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380036318.2A CN119096386A (zh) | 2022-05-06 | 2023-04-05 | 用于制造电化学固体储能电池的方法和固体储能电池 |
| US18/861,776 US20250329829A1 (en) | 2022-05-06 | 2023-04-05 | Method for Producing an Electrochemical Solid-State Energy Storage Cell, and Solid-State Energy Storage Cell |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022111364.7 | 2022-05-06 | ||
| DE102022111364.7A DE102022111364A1 (de) | 2022-05-06 | 2022-05-06 | Verfahren zum Herstellen einer elektrochemischen Festkörper-Energiespeicherzelle und Festkörper-Energiespeicherzelle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023213489A1 true WO2023213489A1 (de) | 2023-11-09 |
Family
ID=86054179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/058958 Ceased WO2023213489A1 (de) | 2022-05-06 | 2023-04-05 | Verfahren zum herstellen einer elektrochemischen festkörper-energiespeicherzelle und festkörper-energiespeicherzelle |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250329829A1 (de) |
| CN (1) | CN119096386A (de) |
| DE (1) | DE102022111364A1 (de) |
| WO (1) | WO2023213489A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026008374A1 (de) * | 2024-07-03 | 2026-01-08 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur lagerung eines elektrodenwickels mit einem druckelement, elektrodenwickel mit dem druckelement und verwendung des druckelements |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014206832A1 (de) * | 2014-04-09 | 2015-10-15 | Robert Bosch Gmbh | Elektrochemische Energiespeicherzelle mit wenigstens einem Temperierungselement und Verfahren zum Anordnen des Temperierungselementes in einer elektrochemischen Energiespeicherzelle |
| US20180261805A1 (en) * | 2017-03-10 | 2018-09-13 | Evolution Engineering Inc. | Battery coil engaging members for downhole tools |
| CN208589469U (zh) * | 2018-08-20 | 2019-03-08 | 横店集团东磁股份有限公司 | 一种圆柱锂离子电池及圆柱壳体挤压装置 |
| EP3916877A1 (de) * | 2020-05-29 | 2021-12-01 | VARTA Microbattery GmbH | Energiespeicherzelle und herstellungsverfahren |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014207531A1 (de) | 2014-04-22 | 2015-10-22 | Bayerische Motoren Werke Aktiengesellschaft | Galvanisches Element mit Festkörperzellenstapel |
-
2022
- 2022-05-06 DE DE102022111364.7A patent/DE102022111364A1/de active Pending
-
2023
- 2023-04-05 WO PCT/EP2023/058958 patent/WO2023213489A1/de not_active Ceased
- 2023-04-05 CN CN202380036318.2A patent/CN119096386A/zh active Pending
- 2023-04-05 US US18/861,776 patent/US20250329829A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014206832A1 (de) * | 2014-04-09 | 2015-10-15 | Robert Bosch Gmbh | Elektrochemische Energiespeicherzelle mit wenigstens einem Temperierungselement und Verfahren zum Anordnen des Temperierungselementes in einer elektrochemischen Energiespeicherzelle |
| US20180261805A1 (en) * | 2017-03-10 | 2018-09-13 | Evolution Engineering Inc. | Battery coil engaging members for downhole tools |
| CN208589469U (zh) * | 2018-08-20 | 2019-03-08 | 横店集团东磁股份有限公司 | 一种圆柱锂离子电池及圆柱壳体挤压装置 |
| EP3916877A1 (de) * | 2020-05-29 | 2021-12-01 | VARTA Microbattery GmbH | Energiespeicherzelle und herstellungsverfahren |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026008374A1 (de) * | 2024-07-03 | 2026-01-08 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur lagerung eines elektrodenwickels mit einem druckelement, elektrodenwickel mit dem druckelement und verwendung des druckelements |
Also Published As
| Publication number | Publication date |
|---|---|
| US20250329829A1 (en) | 2025-10-23 |
| CN119096386A (zh) | 2024-12-06 |
| DE102022111364A1 (de) | 2023-11-09 |
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