WO2012171071A1 - Interface d'adaptateur - Google Patents

Interface d'adaptateur Download PDF

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Publication number
WO2012171071A1
WO2012171071A1 PCT/AU2012/000692 AU2012000692W WO2012171071A1 WO 2012171071 A1 WO2012171071 A1 WO 2012171071A1 AU 2012000692 W AU2012000692 W AU 2012000692W WO 2012171071 A1 WO2012171071 A1 WO 2012171071A1
Authority
WO
WIPO (PCT)
Prior art keywords
adaptor interface
metal
storage device
conductor
adaptor
Prior art date
Application number
PCT/AU2012/000692
Other languages
English (en)
Inventor
Jens Berkan
Robert DINGLI
Tim Olding
Original Assignee
Ev Engineering Limited
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 AU2011902328A external-priority patent/AU2011902328A0/en
Application filed by Ev Engineering Limited filed Critical Ev Engineering Limited
Publication of WO2012171071A1 publication Critical patent/WO2012171071A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • 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
    • 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
    • H01G2/02—Mountings
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • 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

Definitions

  • the present disclosure relates to the electrical connection of electrical energy storage devices, such as battery cells and capacitors.
  • the present disclosure is particularly concerned with an adaptor interface for use between such energy storage devices and electrical conductors.
  • battery cells and their electrode terminals were to be connected to battery systems, battery modules and battery packs.
  • Numerous materials for cell or battery terminals are well known such as for example lead, copper, aluminium, steel and others.
  • Numerous materials such as for example lead, copper, aluminium, steel and others are also well known for battery cell terminal interconnecting bus bars.
  • FIG 1 shows a conventional battery cell ( ), which in this example is a canister type battery cell, has two electric terminals: a positive terminal (2) and a negative terminal (3). Both terminals (2) and (3) are made from aluminium or an aluminium alloy.
  • This type of battery cell with its distinctive aluminium or aluminium alloy terminals is normally used in applications where a plurality of battery cells (1 ) are grouped to form a battery module (4), as shown in Figure 2.
  • the electric connections are made from aluminium or aluminium alloy bus bars (5) that are welded onto the battery cell terminals, (2) and (3).
  • the welding process used is laser welding, resulting in weld seams (6) on one or more sides of each bus bar (5) between the bus bar (5) and the respective terminals (2) and (3).
  • the external electric connection of the module is not shown in Figure 2. Typically this is done by a screw type connection that also has the same or similar electrical and mechanical restrictions as. previously described for the battery cell terminal - bus bar connection.
  • the welded connection system therefore has the disadvantage of permanently connecting all battery cells within one module and it further does not solve the problem of module interconnections, as this type of interconnection usually is still realised with a screw-type connection.
  • an adaptor interface for electrical connection between an electrical energy storage device and a conductor, the adaptor interface having a conductor engaging portion and a connecting portion which is joinable for electrically conductive connection to a terminal of the electrical energy storage device.
  • the terminal of the electrical energy storage device may comprise an aluminium alloy.
  • aluminium alloy includes pure aluminium metal and the term “metal” includes a metal alloy.
  • the electrical energy storage device may for example be a battery cell or a capacitor.
  • the connecting portion is joinable for electrically conductive connection to a terminal of the electrical energy storage device.
  • the connecting portion may be directly joinable to a terminal of the electrical energy storage device.
  • the connecting portion may be indirectly joinable to a terminal of the electrical energy storage device, such as by being directly joinable to an intermediate electrically conductive component, eg a bus bar.
  • the connecting portion preferably includes a first metal.
  • the first metal may be weldable onto an aluminium alloy.
  • the first metal may comprise aluminium or an aluminium alloy.
  • the connecting portion may be permanently joinable, either directly or indirectly as described above, to a terminal of the electrical energy storage device, such as by being weldable to the terminal.
  • the connecting portion is permanently joinable by a bonding process.
  • the bonding process may comprise using an electrically conductive adhesive.
  • the adaptor interface may be bimetallic, ie it may include at least two different metals.
  • the terminal connecting portion may be located on one side of the adaptor interface and is adapted to be connected to a battery terminal or other component, such as a bus bar.
  • the conductor engaging portion is preferably releasably engageable with a conductor, such as a bus bar or a cable.
  • the conductor engaging portion may be provided on an opposing side of the adaptor interface from the connector portion.
  • the conductor engaging portion may include a second metal.
  • the mechanical properties of the second material may be such as to impart high mechanical load capacity and to allow improved screw- or clamp type contact with a conductor such as a bus bar or a cable.
  • the second material may comprise copper or copper alloy, or another material such as steel.
  • the conductor engaging portion may include a cable lug.
  • the conductor engaging portion may include a coated surface to impart additional desired properties to the adaptor, such as increased corrosion resistance or decreased electric or thermal contact resistance.
  • the adaptor interface may include geometric features that support the welding of the adaptor onto the battery cell terminal. It may also feature geometric features that support the manufacturing process and/or assist in connection to the conductor (eg bus bar).
  • the bimetallic adaptor includes at least two different metal zones. Each said metal zone may be continuous or discontinuous.
  • the metal zones may comprise one or more metal components that are joined together.
  • the metal components may be joined together by any suitable process, such as by means of a solid state welding process, explosive welding process, friction welding (preferably an oscillating friction welding process), or other suitable bonding process.
  • At least one said metal zone may comprise the connecting portion. At least another said metal zone may comprise the conductor engaging portion.
  • the adaptor interface comprises a bus bar.
  • the adaptor interface may t ⁇ e connected to a conductor comprising another bus bar or cable.
  • Figure 1 (a) and (b) show schematic side views and Figure 1 (c) shows a schematic top view of a conventional battery cell.
  • Figure 2 shows a schematic top view of a prior art welded connection system in a battery module.
  • Figure 3 shows schematic top and side views of a first embodiment.
  • Figure 4 shows schematic top and side views of a second embodiment.
  • Figure 5 shows a perspective view of a third embodiment.
  • Figure 6 shows a perspective view of a fourth embodiment.
  • Figure 7 shows a perspective view of a fifth embodiment.
  • Figure 8 shows a perspective view of a sixth embodiment.
  • Figure 9 shows a perspective view of a seventh embodiment.
  • Figure 10 shows a perspective view of a eighth embodiment.
  • Figures 1 1 (a), (b) and (c) show perspective views of a ninth embodiment.
  • Figures 12(a), (b) and (c) show perspective views of a tenth embodiment.
  • Figure 13 shows a perspective view of an eleventh embodiment.
  • Figure 14 shows an exploded view of a twelfth embodiment.
  • FIG 3 shows a first embodiment of an adaptor interface, (11 ) in the form of a bimetallic adaptor interface for electrical connection between a battery terminal (not shown) and a conductor (also not shown).
  • the adaptor interface (11 ) has two terminal connecting portions (7), including a first metal which is weldable onto an aluminium alloy and a conductor engaging portion (8).
  • the terminal connecting portions (7) are made from aluminium or aluminium alloy and are weldable to an aluminium or aluminium alloy battery cell terminal. The welding process may be done to the single battery cell and does not need battery cells to be assembled to battery modules.
  • the conductor engaging portion (8) comprises a second metal having superior properties for a screw- or clamp type contact as an interface to a bus bar and is made from copper or copper alloy, but may also comprise other materials such as steel.
  • An additional coating (12) might be applied to the surface of conductor engaging portion (8) in order to impart desired properties such as increased corrosion resistance or decreased electric contact resistance.
  • the coating (12) comprises a silver coating but could instead be a tin coating.
  • the metal zones of the bimetallic adaptor (11 ) are formed by joining together metal components by means of a friction welding process or any other suitable, for instance solid-state welding process.
  • the bimetallic adaptor (11 ) features geometric design features such as radii (10) that supports the welding process of the bimetallic adaptor onto the battery cell terminal. Such features are advantageous, for example, where the laser welder being used is not fully automated and therefore the laser beam has limited movement, such as by being unable to weld radii smaller than a threshold limit or by having a restricted angle of impact.
  • the conductor engaging portion (8) of the bimetallic adaptor includes a geometric design feature comprising a recess (14). that influences the heat conduction inside the part and supports the welding process of the bimetallic adaptor onto the battery cell terminal. Heat conduction is proportional to the temperature difference, thermal conductivity of the material and crosssection available for heat transfer.
  • Design features such as a recess, can restrict heat transfer thus resulting in a "hotter” welding zone, which can thereby support the welding process.
  • Such design features can also direct a larger heat portion into the adaptor rather than into the battery terminal, which results in an overall cooler battery terminal. In turn, this maximises welding energy and thereby minimises welding time and/or reduces temperature stress for the battery.
  • the conductor engaging portion (8) also includes threaded holes or threaded studs (9) that support mechanical interconnection to the bus bar.
  • the threaded holes or studs may include or comprise metallic inserts made from a different material such as steel which is form or friction fitted into the conductor engaging portion.
  • Figure 4 shows a second embodiment of a bimetallic adaptor (111 ). The main difference to the embodiment shown in figure 3 is in the respective
  • terminal connecting portion (107), and conductor engaging portion (108), which are layered depthwise in Figure 4 and transversely in Figure 3, resulting in a reduced number of layers of different metals in the second embodiment with attendant changes to cost and mechanical properties.
  • Figure 5 shows a third embodiment comprising a bimetallic adaptor (21 1) that features laterally spaced terminal connecting portions (207) projecting from one side thereof.
  • the terminal connecting portions (207) comprising aluminium or aluminium alloy.
  • a conductor engaging portion (208) is provided on the other side of the bimetallic adaptor (21 1 ), and comprises a second metal such as copper, copper alloy, or steel having superior mechanical properties.
  • an additional coating (212) might be applied to the surface of the conductor engaging portion (208), for example comprising silver or tin coating.
  • the conductor engaging portion (208) of the bimetallic adaptor (211 ) can feature geometric design properties such as a recess (214) that influences the heat conduction inside the part and supports the welding process of the bimetallic adaptor onto the battery cell terminal.
  • the conductor engaging portion (208) also includes one or more holes (209) through which a threaded stud (215) (see figure 6) can be pushed e.g. prior to welding the bimetallic adaptor to the terminal in order to enable a mechanical screw type interconnection to a bus bar (not shown).
  • Figure 7 shows a fourth embodiment comprising the bimetallic adaptor (211 ) with a bus bar 220 connected thereto by means of a nut 222 screwed onto a threaded stud 215.
  • a nut could be positioned in the recess 214 of the bimetallic adaptor 211 , so that a screw can be screwed into the nut from the top to connect the bus bar (or other conductor, such as a cable lug) to the top of the bimetallic adaptor.
  • Figure 8 shows a fifth embodiment of an adaptor interface comprising a bimetallic bus bar 311 that features a terminal connecting portion (307) comprising an Al alloy plate on one side thereof which is weldable to an aluminium or aluminium alloy battery cell terminal or other bus bars as required, and a conductor engaging portion (308) comprising copper alloy as an electro-mechanical interface to another (conventional) bus bar (not shown). It can feature primary design features (309) such as holes or threaded holes or inserted studs to be mechanically connected to other bus bars or cables (not shown).
  • An additional coating (312) might be applied to the mating surface of the screw- or clamp type contact which increased corrosion resistance or decreased electric contact resistance. This coating could for example be a silver or tin coating.
  • the two metal material zones of the bimetallic bus bar are merged together at joint (313) by means of a friction welding process or any other suitable, for instance solid-state or explosive welding process.
  • Figure 9 shows that the conductor engaging portion (408) of the bimetallic bus bar can feature geometric design properties such as a recess (414) that influences the heat conduction inside the part and supports the welding process of the bimetallic bus bar onto the battery cell terminal.
  • Figure 10 shows that the conductor engaging portion (508) of the bimetallic , bus bar can feature geometric design features such as additional lugs or holes (515) through which cables or wires can be interconnected to the bus bar.
  • Figures 11a, 11 b, 1 1c show a further embodiment of an adaptor interface comprising a bimetallic adaptor (611 ) that features a terminal connecting portion
  • An additional coating (612) might be applied to the mating surface of the screw- or clamp type contact which increased corrosion resistance or decreased electric or thermal contact resistance.
  • This coating could for example be a silver or tin coating.
  • the bimetallic adaptor 71 1 includes a larger conductor engaging portion (708) than terminal connecting portion (707).
  • the terminal connecting portion (707) of the bimetallic adaptor can feature geometric design properties such as a recess (714) that influences the heat conduction inside the part and supports the welding process of the bimetallic adaptor onto the battery cell terminal ( Figure 12 a).
  • the bimetallic adaptor can feature geometric design features such as a hole or holes (709) through which threaded studs (715) can be pushed e.g. prior to welding to enable a mechanical screw type interconnection to the bus bar or cable lug.
  • a nut (714) can be positioned in the lower recess section (714) of the bimetallic adaptor, Figure 12c, so that a screw can be screwed into the nut from the top, connecting a bus bar or cable lug to the top of the bimetallic adaptor.
  • Figure 13 is an exploded view of the arrangement in Figure 12 b.
  • the terminal connecting portion (707) includes a central aperture 7 6 in which is received the base of threaded stud 715.
  • an adaptor interface that can reduce or eliminates the problem and resulting limitations of material creep in prior art devices.
  • the disclosed adaptor interface can provide a highly reliable contact interface between an electrical energy storage device (eg, battery or capacitor terminals) and a conductor, (such as a bus bar or cable) that has a high mechanical load capacity and superior low electric contact resistance. Further it can be reliably disassembled and reassembled under service requirements and reproducible in manufacturing and therefore, is suitable for high volume manufacturing applications.

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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)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention se rapporte à une interface d'adaptateur permettant une connexion électrique entre un dispositif de stockage d'énergie électrique et un conducteur, l'interface d'adaptateur présentant une partie de mise en prise du conducteur et une partie de raccordement qui peut être jointe pour permettre une connexion électroconductrice à un terminal du dispositif de stockage de l'énergie électrique.
PCT/AU2012/000692 2011-06-15 2012-06-15 Interface d'adaptateur WO2012171071A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AU2011902328A AU2011902328A0 (en) 2011-06-15 Bi-Metallic Adaptor Interface
AU2011902328 2011-06-15
AU2011902581A AU2011902581A0 (en) 2011-06-30 Improved B-Metallic Adaptor Interface
AU2011902581 2011-06-30
AU2011902764A AU2011902764A0 (en) 2011-07-12 Bimetallic bus bar for Li Ion Battery Modules
AU2011902764 2011-07-12
AU2011903276A AU2011903276A0 (en) 2011-08-17 Low Cost Bi-Metallic Electric Battery Terminal Interface
AU2011903276 2011-08-17

Publications (1)

Publication Number Publication Date
WO2012171071A1 true WO2012171071A1 (fr) 2012-12-20

Family

ID=47356433

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2012/000692 WO2012171071A1 (fr) 2011-06-15 2012-06-15 Interface d'adaptateur

Country Status (1)

Country Link
WO (1) WO2012171071A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015034597A1 (fr) * 2013-09-06 2015-03-12 Johnson Controls Technology Company Interconnexion de cellules de batterie ayant une distribution de contraintes sur une forme géométrique
WO2015197349A1 (fr) * 2014-06-26 2015-12-30 Robert Bosch Gmbh Élément de liaison à éléments à ressort
WO2019206730A1 (fr) * 2018-04-23 2019-10-31 Triathlon Batterien Gmbh Dispositif pour la mise en contact électrique d'une carte de circuit imprimé à un système d'ensemble de cellules de batterie et installation comprenant un tel dispositif et un tel système d'ensemble de cellules de batterie
EP4044348A1 (fr) * 2021-02-10 2022-08-17 Samsung SDI Co., Ltd. Bloc-batterie

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060105624A1 (en) * 2004-11-18 2006-05-18 Taketoshi Yoshikane Power device
US20100247997A1 (en) * 2009-01-12 2010-09-30 A123 Systems, Inc. Structure of prismatic battery modules with scalable architecture
US20110081568A1 (en) * 2009-10-05 2011-04-07 Sung-Bae Kim Battery module

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060105624A1 (en) * 2004-11-18 2006-05-18 Taketoshi Yoshikane Power device
US20100247997A1 (en) * 2009-01-12 2010-09-30 A123 Systems, Inc. Structure of prismatic battery modules with scalable architecture
US20110081568A1 (en) * 2009-10-05 2011-04-07 Sung-Bae Kim Battery module

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015034597A1 (fr) * 2013-09-06 2015-03-12 Johnson Controls Technology Company Interconnexion de cellules de batterie ayant une distribution de contraintes sur une forme géométrique
US10103374B2 (en) 2013-09-06 2018-10-16 Johnson Controls Technology Company Battery cell interconnect with stress distribution over a geometric form
US11529873B2 (en) 2013-09-06 2022-12-20 Cps Technology Holdings Llc Bus bar link for battery cell interconnections in a battery module
WO2015197349A1 (fr) * 2014-06-26 2015-12-30 Robert Bosch Gmbh Élément de liaison à éléments à ressort
WO2019206730A1 (fr) * 2018-04-23 2019-10-31 Triathlon Batterien Gmbh Dispositif pour la mise en contact électrique d'une carte de circuit imprimé à un système d'ensemble de cellules de batterie et installation comprenant un tel dispositif et un tel système d'ensemble de cellules de batterie
US11605843B2 (en) 2018-04-23 2023-03-14 Triathlon Batterien Gmbh Mechanism for electrically contacting a printed circuit board to a battery cell composite system, and device comprising such a mechanism, and such a battery cell composite system
EP4044348A1 (fr) * 2021-02-10 2022-08-17 Samsung SDI Co., Ltd. Bloc-batterie

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