Classifications

• • 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/543—Terminals
  • H01M50/545—Terminals formed by the casing of the cells
• • 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
  • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
• • 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
  • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
• • 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
  • H01M50/117—Inorganic material
  • H01M50/119—Metals
• • 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
  • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
  • H01M50/1243—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the internal coating on the 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/543—Terminals
• • 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/543—Terminals
  • H01M50/552—Terminals characterised by their shape
  • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
• • 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/543—Terminals
  • H01M50/562—Terminals 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
  • 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
  • H01M2220/00—Batteries for particular applications
  • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
• • 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 battery cell, which comprises a cell housing, in which an electrode unit is arranged, wherein the electrode unit has an anode electrically connected to a negative terminal and a cathode electrically connected to a positive terminal, and wherein the cell housing, a first housing part which forms a negative terminal, and a second housing part, which forms the positive terminal has.
• Electrical energy can be stored by means of batteries. Batteries convert chemical reaction energy into electrical energy. Here are batteries.
• Primary batteries and secondary batteries distinguished. Primary batteries are only functional once, while secondary batteries, also referred to as accumulators, are rechargeable. In particular, so-called lithium-ion battery cells are used in an accumulator. These are characterized among other things by high energy densities, thermal stability and extremely low self-discharge.
• Lithium-ion battery cells have a positive electrode, also referred to as a cathode, and a negative electrode, also referred to as an anode.
• the cathode and the anode each include one
• the electrodes of the battery cell are formed like a film and with the interposition of a
• a battery cell further comprises a cell housing, which consists for example of aluminum. Within the cell housing, the electrode unit is arranged.
• the cell housing is, for example, prismatic, in particular cuboidal, or circular cylindrical. Other types of cell housing are known.
• the two electrodes of the electrode unit are electrically connected to poles of the battery cell, which are also referred to as terminals.
• the terminals of the battery cell can be attached to the cell housing and electrically isolated from the cell housing.
• the cell housing it is also conceivable for the cell housing to have a first housing part, which forms the negative terminal, and a second housing part, which forms the positive terminal, wherein the two housing parts are electrically insulated from one another.
• DE 10 2011 076 919 AI a generic battery cell is known, which has an electrode unit which is arranged in a metallic housing.
• the housing comprises two housing parts, which are electrically isolated from each other by an insulating element.
• Cathodes of the electrode unit are electrically connected to one of the two housing parts.
• the two housing parts thus form the terminals of
• a positive terminal is integral with a prismatic lid
• a negative terminal which consists of a
• Composite material is made, protrudes through an opening in the lid of the
• the composite material comprises, for example, a layer
• a lithium-ion battery cell which has a prismatic cell housing, in which a Electrode unit is arranged.
• a positive terminal and a negative terminal each protrude through an opening in a lid of the cell housing.
• the negative terminal comprises a composite material comprising, for example, a layer of copper and a layer of aluminum.
• a battery cell in particular a lithium-ion battery cell, proposed, which comprises a cell housing in which a lithium-ion battery cell
• Electrode unit is arranged.
• the electrode unit has an anode electrically connected to a negative terminal and a cathode electrically connected to a positive terminal.
• the cell housing has a first housing part and a second housing part. The first housing part forms the negative terminal, and the second housing part forms the positive terminal.
• the first housing part of the cell housing is made of a hybrid material comprising a first layer of copper and a second layer of aluminum.
• the first layer of copper and the second layer of aluminum are in particular electrically conductively connected to one another.
• an electric current may flow from the first layer of copper to the second layer of aluminum, as well as in the reverse direction.
• the hybrid material of the first housing part preferably comprises exactly two layers, namely the first layer of copper and the second layer of aluminum.
• the hybrid material of the first housing part therefore preferably does not comprise a third layer.
• the first layer of the hybrid material made of copper preferably directly adjoins the second layer of the hybrid material made of aluminum.
• the anode of the electrode unit is connected to the first layer of the hybrid material made of copper.
• the anode of the electrode unit and the first layer of the hybrid material made of copper are connected to one another in a materially bonded manner, in particular welded.
• the anode has a current conductor made of copper, which is connected to the first layer of the hybrid material made of copper cohesively, in particular welded, is.
• similar materials can be welded.
• the first housing part of the cell housing is arranged such that the first layer of the
• the second housing part of the cell housing is made of aluminum.
• the second housing part of the cell housing made of aluminum so has no further material.
• the second housing part of the cell housing made of aluminum so has no further material.
• Cathode of the electrode unit and the second housing part of the cell housing made of aluminum materially connected to each other, in particular welded.
• the cathode has a current conductor
• Aluminum which is integrally connected to the second housing part of the cell housing made of aluminum, in particular welded, is. Thus, similar materials can be welded.
• an insulation element is provided, which electrically isolates the two housing parts, and thus also the two terminals. At the same time that seals
• the electrode unit is held in a form-fitting manner in the insulation element.
• the insulation element thus fulfills another function.
• the insulation element thus fulfills another function.
• a battery cell according to the invention advantageously finds use in an electric vehicle (EV), in a hybrid vehicle (HEV), in a plug-in hybrid vehicle (PHEV), in a stationary battery, in particular for
• EV electric vehicle
• HEV hybrid vehicle
• PHEV plug-in hybrid vehicle
• Grid stabilization in households in a battery in a marine application, for example in shipbuilding or in jet skis, or in a battery in an aeronautical application, in particular in aircraft construction.
• Other applications are conceivable.
• a battery cell according to the invention has a simplified and robust design.
• the number of required components is reduced.
• An electrical resistance between the electrodes and the terminals is advantageously reduced.
• the isolation element serves to electrically isolate the electrodes, the connector elements and the housing parts of different polarity from one another.
• the insulation element also serves to positively receive and hold the connector elements and the housing parts.
• the insulating member similar to a conventional retainer, serves to position the electrode unit within the cell housing.
• FIG. 1 is a schematic sectional view of a battery cell, a perspective sectional view of a cell housing of the battery cell of Figure 1 and a sectional view of a portion of the battery cell of Figure 1.
• the battery cell 2 comprises a cell housing 3, which is designed to be electrically conductive.
• the cell housing 3 has a first housing part 61 and a second housing part 62, which are electrically insulated from each other by a peripheral insulating element 80.
• the first housing part 61 forms a negative terminal 11, and the second housing part 62 forms a positive terminal 12.
• the battery cell 2 can also be charged via the terminals 11, 12.
• the first housing part 61 is made of a hybrid material, which in the present case comprises two metallic material layers.
• the second housing part 62 is in the present case made of aluminum.
• the two housing parts 61, 62 are electrically conductive.
• an electrode unit 10 is arranged, which has two electrodes, namely an anode 21 and a cathode 22.
• the electrode unit 10 is formed as an electrode winding, and the anode 21 and the cathode 22 are each carried out like a film and with the interposition of a separator 18 to the
• the electrode unit 10 is formed as an electrode stack, wherein layers of the anode 21 and
• Layers of the cathode 22 with the interposition of one layer of the separator 18 are stacked on top of each other.
• a liquid electrolyte is presently provided in the interior of the cell housing 3 of the battery cell 2.
• the electrode unit 10 of the battery cell 2 with the anode 21, the cathode 22 and the separator 18 are surrounded by the liquid electrolyte.
• the anode 21 comprises an anodic active material 41, which is designed like a foil.
• the anode 21 further comprises a current conductor 31, which is also formed like a foil.
• the anodic active material 41 and the current conductor 31 of the anode 21 are laid flat against each other and connected to each other. Thus, the anode 21 is formed like a film.
• the cathode 22 comprises a cathodic active material 42, which is designed like a foil.
• the cathode 22 further includes a current collector 32, which is also formed like a foil.
• the current conductor 31 of the anode 21 is made electrically conductive and made of a metal, for example copper. From the current conductor 31 of the Anode 21 protrude anode contact tabs, which are electrically connected to a negative connector element 51.
• the negative connector element 51 is electrically connected to the first housing part 61. Thus, the anode 21 is electrically connected to the negative via the negative connector element 51
• Terminal 11 of the battery cell 2 connected.
• Anodentitlefahen also be directly connected to the first housing part 61.
• the negative connector element 51 is not required in this case.
• the current collector 32 of the cathode 22 is made electrically conductive and made of a metal, for example aluminum. From the current collector 32 of the cathode 22 protrude away cathode contact lugs, which are electrically connected to a positive connector element 52.
• the positive connector element 52 is electrically connected to the second housing part 62. Thus, the cathode 22 is electrically connected to the positive via the positive connector element 52
• Terminal 12 of the battery cell 2 connected.
• Cathode contact lugs also be directly connected to the second housing part 62.
• the positive connector element 52 is not required in this case.
• Figure 2 shows a perspective cutaway view of a
• Cell housing 3 located electrode unit 10 of the battery cell 2 is not shown.
• the first housing part 61, which forms the negative terminal 11, and the second housing part 62, which forms the positive terminal 12, are electrically insulated from each other by the peripheral insulating element 80.
• Isolation element 80 also serves to seal the interior of the cell housing 3 to the outside, so that in particular no electrolyte from the interior of the cell housing 3
• Cell housing 3 can escape, and that no moisture can penetrate into the interior of the cell case 3.
• the first housing part 61 of the cell housing 3 and the second housing part 62 of the cell housing 3 are held in a form-fitting manner in the insulation element 80.
• the insulating element 80 is adhesively bonded to the first housing part 61 and to the second housing part 62.
• FIG. 3 shows a sectional illustration of a partial region of the battery cell 2 from FIG. 1.
• the electrode unit 10 of the battery cell 2 located inside the cell housing 3 abuts against the insulating element 80 and is held in the insulating element 80 in a form-fitting manner.
• the first housing part 61 is made of a hybrid material comprising a first layer 81 of copper and a second layer 82 of aluminum.
• the first layer 81 of the hybrid material made of copper directly adjoins the second layer 82 of the hybrid material made of aluminum.
• the first housing part 61 of the cell housing 3 is arranged such that the first layer 81 of the hybrid material of copper faces the electrode unit 10.
• the second layer 82 of the aluminum hybrid material faces away from the electrode unit 10.
• the first layer 81 of the hybrid material made of copper thus points to the interior of the cell housing 3.
• the second layer 82 of the hybrid material made of aluminum facing outwards, ie from the
• Electrode unit 10 inside away.
• the anode 21 of the electrode unit 10 is connected to the inner first layer 81 of the hybrid copper material.
• Hybrid material made of copper cohesively bonded together, in particular welded.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Connection Of Batteries Or Terminals (AREA)
• Sealing Battery Cases Or Jackets (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62846168

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (11)

• 2017
  • 2017-06-30 DE DE102017211112.7A patent/DE102017211112A1/de active Pending
• 2018
  • 2018-06-29 JP JP2019572443A patent/JP2020525987A/ja active Pending
  • 2018-06-29 US US16/627,416 patent/US20200127244A1/en not_active Abandoned
  • 2018-06-29 CN CN201880043706.2A patent/CN110785869A/zh active Pending
  • 2018-06-29 WO PCT/EP2018/067685 patent/WO2019002596A1/de active Application Filing
  • 2018-06-29 KR KR1020207002390A patent/KR20200024249A/ko unknown
  • 2018-06-29 EP EP18738247.8A patent/EP3646397A1/de active Pending

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