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1. 发明公开

US20230207833A1 LITHIUM-ION CELL WITH HIGH SPECIFIC ENERGY DENSITY 审中-公开
公开(公告)号：US20230207833A1
公开(公告)日：2023-06-29
申请号：US17999935
申请日：2021-05-17
申请人： VARTA Microbattery GmbH
发明人： Edward PYTLIK , Michael GOTTSCHALK , David ENSLING , Martin ELMER
IPC分类号： H01M4/75 , H01M10/0525 , H01M4/66 , H01M10/04
CPC分类号： H01M4/75 , H01M10/0525 , H01M4/661 , H01M10/0431
摘要： A lithium ion cell includes a ribbon-shaped electrode-separator assembly comprising an anode, a separator. The electrode-separator assembly is formed as a winding. The anode comprises, as an anode current collector, a ribbon-shaped metal foil having a first longitudinal edge. The anode current collector has a strip-shaped main region loaded with a layer of negative electrode material and a free edge strip extending along the first longitudinal edge that is not loaded with the negative electrode material. The cathode comprises, as a cathode current collector, a ribbon-shaped metal foil having a first longitudinal edge. The cathode current collector has a strip-shaped main region loaded with a layer of positive electrode material and a free edge strip extending along the first longitudinal edge that is not loaded with the positive electrode material. The strip-shaped main region of the anode current collector or the cathode current collector has a plurality of apertures.

2. 发明公开

US20230275331A1 ENERGY STORAGE CELL AND PRODUCTION METHOD 审中-公开
公开(公告)号：US20230275331A1
公开(公告)日：2023-08-31
申请号：US18005619
申请日：2021-07-27
申请人： VARTA Microbattery GmbH
发明人： Edward PYTLIK , David ENSLING
IPC分类号： H01M50/559 , H01M50/538 , H01M10/0587 , H01M50/107 , H01M50/119 , H01M50/184 , H01M4/75 , H01M50/188 , H01M50/152 , H01M50/169 , H01M10/04 , H01M50/159
CPC分类号： H01M50/559 , H01M50/538 , H01M10/0587 , H01M50/107 , H01M50/119 , H01M50/184 , H01M4/75 , H01M50/188 , H01M50/152 , H01M50/169 , H01M10/049 , H01M50/159 , H01M10/0431
摘要： A an energy storage cell includes an electrode-separator assembly comprising an anode, a cathode, and a separator in a form of a cylindrical winding having two terminal end faces and a winding shell. An anode current collector includes a first longitudinal edge, and a cathode current collector includes a first longitudinal edge. The energy storage cell also includes a tubular housing portion in which the cylindrical winding is aligned axially. An at least partly metallic contact element with a circular edge is in direct contact with and connected the first longitudinal edge of the anode current collector or the first longitudinal edge of the cathode current collector. The energy storage cell further includes an annular seal made of an electrically insulating material that surrounds the circular edge of the contact element. The contact element together with the seal closes a terminal circular opening of the tubular housing portion.

3. 发明公开

US20230207789A1 SECONDARY ELECTROCHEMICAL LITHIUM-ION CELL 审中-公开
公开(公告)号：US20230207789A1
公开(公告)日：2023-06-29
申请号：US17919754
申请日：2021-04-28
申请人： VARTA Microbattery GmbH
发明人： Edward PYTLIK , David ENSLING , Ihor CHUMAK
IPC分类号： H01M4/38 , H01M10/0525 , H01M4/134 , H01M50/107 , H01M50/109 , H01M50/538 , H01M4/04 , H01M10/0587
CPC分类号： H01M4/382 , H01M10/0525 , H01M4/134 , H01M50/107 , H01M50/109 , H01M50/538 , H01M4/0404 , H01M4/0445 , H01M10/0587 , H01M2004/027
摘要： A lithium-ion secondary electrochemical cell includes a negative electrode formed as a composite electrode comprising an anode current collector and a first electrochemically active component capable of intercalating and deintercalating lithium ions. The lithium-ion electrochemical cell further includes a positive electrode formed as a composite electrode comprising a cathode current collector and a second electrochemically active component capable of intercalating and deintercalating lithium ions. The lithium-ion electrochemical cell also includes a lithium reserve formed at a current collector reserve region that is at least partly free of the first and the second electrochemically active components, the current collector reserve region being a portion of the anode current collector and/or the cathode current collector.

4. 发明公开

US20230420800A1 ENERGY STORAGE ELEMENT HAVING A PRISMATIC HOUSING 审中-公开
公开(公告)号：US20230420800A1
公开(公告)日：2023-12-28
申请号：US18038712
申请日：2021-10-26
申请人： VARTA MICROBATTERY GMBH
发明人： Edward PYTLIK , David ENSLING
IPC分类号： H01M50/434 , H01M10/0525 , H01M50/103 , H01M50/536 , H01M4/66
CPC分类号： H01M50/434 , H01M10/0525 , H01M50/103 , H01M50/536 , H01M4/667 , H01M2004/027
摘要： An energy storage element includes an assembly comprising a plurality of anodes, each respective anode of the plurality of anodes comprising an anode current collector having a main region loaded with a layer of negative electrode material and a free edge strip. The energy storage element further includes a plurality of cathodes, each respective cathode comprising a cathode current collector having a main region loaded with a layer of positive electrode material and a free edge strip. The anodes and the cathodes are stacked and are separated by separators or layers of a solid state electrolyte and the assembly is enclosed in a prismatic housing. The free edge strips of the anode current collectors protrude from one side of the assembly and the free edge strips of the cathode current collectors protrude from another side of the assembly.

5. 发明公开

US20230291080A1 ENERGY STORAGE CELL AND PRODUCTION METHOD 审中-公开
公开(公告)号：US20230291080A1
公开(公告)日：2023-09-14
申请号：US18020452
申请日：2021-08-11
申请人： VARTA MICROBATTERY GMBH
发明人： Edward PYTLIK , David ENSLING
IPC分类号： H01M50/538 , H01M10/0525 , H01M50/119 , H01M50/107 , H01M4/75 , H01M4/66 , H01M50/169 , H01M50/179 , H01M50/559 , H01M50/562 , H01M50/109 , H01M10/0587 , H01M10/04 , H01M50/181 , H01M50/152 , H01M50/153
CPC分类号： H01M50/538 , H01M10/0525 , H01M50/119 , H01M50/107 , H01M4/75 , H01M4/661 , H01M50/169 , H01M50/179 , H01M50/559 , H01M50/562 , H01M50/109 , H01M10/0587 , H01M10/049 , H01M10/0422 , H01M10/0427 , H01M50/181 , H01M50/152 , H01M50/153
摘要： A lithium-ion cell includes a housing comprising a metallic tubular housing part made of aluminum or an aluminum alloy with a terminal circular opening. The cell further includes a contact element that closes the terminal circular opening of the tubular housing part, the contact element comprising a metal disk, a contact sheet metal member, a metal pole pin and an insulator. In addition, the cell includes an electrode-separator assembly having an anode, a cathode, and a separator with the sequence anode/separator/cathode. The electrode-separator assembly is in the form of a cylindrical winding with two terminal end faces and a winding shell located therebetween. The electrode-separator assembly is disposed in the winding and is axially aligned so that the winding shell abuts an inside of the tubular housing part.

6. 发明公开

US20240283100A1 ENERGY STORAGE ELEMENT, ASSEMBLY OF ENERGY STORAGE ELEMENTS AND PRODUCTION PROCESS 审中-公开
公开(公告)号：US20240283100A1
公开(公告)日：2024-08-22
申请号：US18570137
申请日：2022-07-20
申请人： VARTA Microbattery GmbH
发明人： Reiko STUTZ , Stefan STOCK , Herbert SCHEIN , Edward PYTLIK , David ENSLING , Stefanie CADUS
IPC分类号： H01M50/531 , H01M10/0525 , H01M50/119 , H01M50/516 , H01M50/528 , H01M50/56 , H01M50/578
CPC分类号： H01M50/531 , H01M50/516 , H01M50/528 , H01M50/56 , H01M50/578 , H01M10/0525 , H01M50/119
摘要： An energy storage element includes an air- and liquid-tight housing. The housing includes a metallic, cup-shaped housing part with a housing bottom and a terminal opening. The housing further includes a lid component welded into and closing the terminal opening of the cup-shaped housing part, the lid component including a metallic lid plate and a negative terminal passed through an aperture in the lid plate and electrically insulated from the lid plate. The energy storage element also includes an electrode-separator assembly having a first flat terminal end face, a second flat terminal end face, an anode with an anode current collector having a first edge and a second edge parallel thereto, and a cathode with a cathode current collector having a first edge and a second edge parallel thereto. A contact sheet metal member is seated on the first edge of the anode current collector and connected thereto by welding.

7. 发明公开

US20240006654A1 LITHIUM-ION CELL WITH A HIGH SPECIFIC ENERGY DENSITY 审中-公开
公开(公告)号：US20240006654A1
公开(公告)日：2024-01-04
申请号：US18026398
申请日：2021-09-15
申请人： VARTA Microbattery GmbH
发明人： Edward PYTLIK , David ENSLING
IPC分类号： H01M10/0525 , H01M10/04 , H01M4/75 , H01M4/38 , H01M4/62 , H01M10/0569 , H01M10/0568
CPC分类号： H01M10/0525 , H01M10/0431 , H01M4/75 , H01M4/382 , H01M4/625 , H01M10/0569 , H01M10/0568 , H01M2004/027
摘要： A secondary lithium ion cell includes an electrode-separator assembly in the form of a winding with two terminal end faces. The electrode separator assembly comprising an anode, a cathode, and a separator. The anode comprises an anode current collector comprising a first longitudinal edge, a second longitudinal edge, a strip-shaped main region, and a free edge strip extending along the first longitudinal edge. The strip shaped main region of the anode current collector is loaded with a layer of negative electrode material and the free edge strip of the anode current collector is not loaded with the negative electrode material. The layer of negative electrode material comprises metallic lithium. The cathode comprises a cathode current collector comprising a first longitudinal edge, a second longitudinal edge, a strip-shaped main region, and a free edge strip extending along the first longitudinal edge.

8. 发明公开

US20230352765A1 ENERGY STORAGE CELL 审中-公开
公开(公告)号：US20230352765A1
公开(公告)日：2023-11-02
申请号：US18246198
申请日：2021-09-14
申请人： VARTA Microbattery GmbH
发明人： Edward PYTLIK , David ENSLING
IPC分类号： H01M10/6554 , H01M50/107 , H01M10/0587 , H01M10/6561 , H01M10/6567 , H01M50/183 , H01M10/61
CPC分类号： H01M10/6554 , H01M50/107 , H01M10/0587 , H01M10/6561 , H01M10/6567 , H01M50/183 , H01M10/61 , H01M10/0525
摘要： The invention relates to an energy storage cell (100) in the form of a cylindrical round cell having an outside diameter of al least 30 mm, comprising an electrode-separator composite (104) having the following sequence: anode, separator, cathode. The electrode-separator composite (104) is in the form of a hollow cylindrical winding having two terminal end faces and having a winding casing lying therebetween. The energy storage cell comprises a housing, which surrounds a hollow cylindrical interior. In the interior of the housing, the electrode-separator composite (104) in the form of a winding is oriented axially In order to delimit the interior, the housing comprises: —a first annular closure element (1010), which has an outside diameter and an inside diameter; —a second annular closure element (1020), which has an outside diameter and au inside diameter; —a first tubular housing part (1030), which has two terminal circular openings, the diameter of the first tubular housing part (1030) being matched to the outside diameter of the first annular closure element (1010) and of the second annular closure element (1020); and —a second tubular housing part (1040), which has two terminal circular openings, the diameter of the second tubular housing part (1040) being matched to the inside diameter of the first annular closure element (1010) and of the second annular closure element (1020). The strip-shaped electrodes of the electrode-separator composite are contacted by means of the longitudinal edges of the electrodes, which protrude from the terminal end faces of the hollow cylindrical winding. The energy storage cell comprises an at least partially metal contact element, which is in direct contact with one of the longitudinal edges and is connected to said longitudinal edge preferably by means of welding. The first or the second annular closure element (1010, 1020) acts as the contact element. The second tubular housing part (1040) of the housing defines a channel (1500), which is open at both ends and runs axially through the energy storage cell.

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