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1. WO2019046692 - BATTERY CELL WITH ALUMINUM CASE

Publication Number WO/2019/046692
Publication Date 07.03.2019
International Application No. PCT/US2018/049043
International Filing Date 31.08.2018
IPC
H01M 2/06 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
02Cases, jackets or wrappings
06Arrangements for introducing electric connectors into or through cases
H01M 2/26 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
20Current-conducting connections for cells
22Fixed connections, i.e. not intended for disconnection
26Electrode connections
H01M 2/30 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
20Current-conducting connections for cells
30Terminals
CPC
B23K 11/11
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
11Resistance welding; Severing by resistance heating
10Spot welding; Stitch welding
11Spot welding
B23K 20/122
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
20Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
12the heat being generated by friction; Friction welding
122using a non-consumable tool, e.g. friction stir welding
B23K 20/129
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
20Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
12the heat being generated by friction; Friction welding
129specially adapted for particular articles or workpieces
B23K 2101/38
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2101Articles made by soldering, welding or cutting
36Electric or electronic devices
38Conductors
B23K 2103/10
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2103Materials to be soldered, welded or cut
08Non-ferrous metals or alloys
10Aluminium or alloys thereof
B23K 2103/12
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2103Materials to be soldered, welded or cut
08Non-ferrous metals or alloys
12Copper or alloys thereof
Applicants
  • NIO USA, INC. [US]/[US]
Inventors
  • NEWMAN, Austin L.
  • SMITH, Alexander J.
  • ING, Adam H.
  • RAJAIE, Rick
Agents
  • LENNOX-GENTLE, Thaine
Priority Data
15/692,72331.08.2017US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BATTERY CELL WITH ALUMINUM CASE
(FR) CELLULE DE BATTERIE AVEC BOÎTIER D'ALUMINIUM
Abstract
(EN)
Methods and systems provide for the manufacture of a cylindrical battery cell case that is changed from steel (or nickel-plated steel) to aluminum. With this change, spot welding the copper tab from the anode to the aluminum case will result in the copper and aluminum corroding over time - leading to early battery failure. To manufacture the battery with the aluminum case, one or more manufacturing changes are made including one or more of: 1. changing the polarity of the battery to spot weld the copper tab to a steel top of the battery; 2. coating the copper tab with a second material to prevent corrosion; and/or, 3. use a different welding method (e.g., a friction stir weld) to fuse the copper tab to the aluminum case.
(FR)
L'invention concerne des procédés et des systèmes permettant la fabrication d'un boîtier de cellule de batterie cylindrique qui est modifié à partir d'acier (ou d'acier plaqué de nickel) en aluminium. Avec ce changement, la soudure par points de la languette en cuivre de l'anode au boîtier en aluminium conduit à la corrosion du cuivre et de l'aluminium au fil du temps conduisant à une défaillance précoce de la batterie. Pour fabriquer la batterie avec le boîtier en aluminium, un ou plusieurs changements de fabrication sont réalisés, comprenant un ou plusieurs des éléments suivants : 1. Le changement de la polarité de la batterie pour souder par point la languette en cuivre à une partie supérieure en acier de la batterie ; 2. Le revêtement de la languette en cuivre avec un second matériau pour empêcher la corrosion ; et/ou 3. L'utilisation d'un procédé de soudage différent (par exemple, une soudure par friction-malaxage) pour fusionner la languette en cuivre avec le boîtier en aluminium.
Also published as
Latest bibliographic data on file with the International Bureau