WO2017144214A1 - Procédé de fabrication d'un élément de raccordement électrique et élément de raccordement électrique pour éléments de batterie - Google Patents

Procédé de fabrication d'un élément de raccordement électrique et élément de raccordement électrique pour éléments de batterie Download PDF

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Publication number
WO2017144214A1
WO2017144214A1 PCT/EP2017/051460 EP2017051460W WO2017144214A1 WO 2017144214 A1 WO2017144214 A1 WO 2017144214A1 EP 2017051460 W EP2017051460 W EP 2017051460W WO 2017144214 A1 WO2017144214 A1 WO 2017144214A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
connecting element
contact
battery
battery cell
Prior art date
Application number
PCT/EP2017/051460
Other languages
German (de)
English (en)
Inventor
Stefan Juraschek
Jürgen Hildinger
Original Assignee
Bayerische Motoren Werke Aktiengesellschaft
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
Application filed by Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Publication of WO2017144214A1 publication Critical patent/WO2017144214A1/fr

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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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B21C23/142—Making profiles
    • 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

Definitions

  • the invention relates to a connecting element for connecting poles of battery cells, a battery and respective methods for producing the connecting element and the battery.
  • connecting elements for electrically connecting poles of battery cells are manufactured using, for example, a deep drawing process.
  • the connecting elements which are also referred to as ZellAND isten, for example, prepared by first a sheet is deep-drawn so that it has a cross-sectional shape which is ⁇ -shaped, and then from the deep-drawn waves profile sheet metal gel sections according to the size be cut out of the desired connecting element.
  • a sheet is formed by tensile or compressive forces applied by presses in conjunction with a die.
  • Such a pressing process creates stresses in the workpiece which, sometimes desired, can often be undesirable.
  • the formation of a workpiece can be divided into different deep drawing steps. This leads to an increased effort in the production of such workpieces, since first several
  • steps may be necessary and, secondly, the workpieces may need to be made using a number of different tools, which may result in increased tooling costs.
  • a post-processing such as a shape-appropriate cutting of the deep-drawn sheet is usually required to complete the connecting element.
  • Increased tool costs may be less important in a series production since they only have to be applied once.
  • the increased tool costs can be very significant and thus considerably increase the production costs.
  • the present invention has for its object to provide a method for producing a connecting element for connecting poles of battery cells, a method for producing a battery, a connecting element for connecting poles of battery cells, and a battery, with which the tooling costs for the production can be reduced.
  • a method of manufacturing a connector that has a first contact portion configured to be connected to a first pole of a first battery cell, a second contact portion configured to be connected to a second pole of a second battery cell, and a second contact portion
  • connecting portion connecting the first contact portion and the second contact portion comprising providing a compact of a metal material, providing a die having an opening, wherein a shape selected to at least a portion of the opening depending on a cross-sectional shape of the connecting element to be produced is a pressing of a part of the compact long pressing direction through the opening of the die to obtain an extruded profile having a longitudinal direction determined by the pressing direction, and machining the extruded profile to produce the connecting element.
  • a connecting element is provided with a first contact section, which is adapted to be connected to a first pole of a first battery cell, and to a second contact section, which is adapted to be connected to a second pole of a second battery cell are produced.
  • the first pole is a pole selected from the group consisting of a positive pole and a negative pole
  • the second pole of the other pole selected from the group consisting of the positive pole and the negative pole.
  • the method may also form a connector having a plurality of first contact portions and a plurality of second contact portions.
  • a plurality of first poles of a plurality of first battery cells can be connected in parallel by means of the first contact sections
  • a plurality of second poles of a plurality of second battery cells can be connected in parallel by means of the second contact sections, wherein the parallel-connected first poles in series with the second connected in parallel Poles are connected in series.
  • a shape of at least a part of an opening of a die through which at least a part of a compact is pressed along a pressing direction is added to an extruded profile obtained, depending on a cross-sectional shape of the connecting element to be produced, and the extruded profile is further processed to produce the connecting element.
  • a cross-sectional shape of the obtained extruded profile corresponds to the shape or the cross section of the opening of the die, and a longitudinal direction of the extruded profile corresponds to the pressing direction.
  • the step of pressing a part of the compact through the opening of the die it is preferably heated to a forming temperature that depends on the material of the compact.
  • the shape of the at least part of the opening of the die may correspond to a cross-section of the connecting element ultimately formed by the method.
  • the shape of the entire opening of the die may also correspond to the cross section of the connecting element ultimately produced by the method.
  • the method according to the invention can bring about a change in the technology for producing the cell contacts or connecting elements on extruded profiles.
  • the cross-sectional shape of the extruded profile obtained by the extrusion step may be further changed, for example, by bending, a deep-drawing step subsequent to extrusion, or the like to obtain the final cross-sectional shape of the connecting element produced by the method ,
  • the cross-sectional shape of the extruded profile already substantially correspond to the cross-sectional shape of the extruded profile.
  • the cross-sectional shape of the extruded profile is further changed, only minor further Umform ing the cross-sectional shape of the extruded profile required to obtain the cross-sectional shape of the connecting element. Therefore, even in this case, the required tooling costs can be reduced.
  • the shape of at least part of the opening determines a cross-sectional shape of the connection portion and divides respective cross-sectional shapes of the first contact portion and the second contact portion.
  • the shape or the cross-sectional shape for part of the opening corresponds to a cross-sectional shape of the connection portion and to divide respective cross-sectional shapes of the first contact portion and the second contact portion, with the respective parts preferably connecting to the connection portion.
  • a connecting element can be produced which has a rüm mten connecting portion. In this way, in particular the cross-sectional shape of a portion of the connecting element, which was previously effected by deep drawing, can be achieved by the extrusion.
  • the provision of the die comprises providing a die having an opening having first and second rectilinear portions spaced from each other and a curved portion connecting the first and second rectilinear portions.
  • a connecting element can be produced which has an ⁇ -shaped cross section.
  • the processing of the extruded profile may include a cutting to length of the extruded profile, wherein the cutting comprises a severing of the extruded profile transversely to the longitudinal direction of the extruded profile to form a semi-finished product of the connecting element or the connecting element.
  • the severing can be done for example by cutting or sawing.
  • a cutting or cutting of the extruded profile transversely to the longitudinal direction of the extruded profile is usually carried out in order to obtain a connecting element with rectilinear end faces.
  • the connecting element can already be produced by cutting to length.
  • the cutting to length may involve severing the extrusion profile transversely to the longitudinal direction at a distance predetermined with respect to the longitudinal direction to form a plurality of semi-finished products of the connection element to be produced or a plurality of connection elements.
  • the predetermined distance can be selected such that it corresponds to a width of the connecting element, wherein the width direction of the connecting element corresponds to the longitudinal direction of the extruded profile.
  • the provision of the die comprises providing a die having an opening having a plurality of spaced-apart and preferably rectilinear portions, and a plurality of curved portions connecting each two adjacent portions.
  • a connecting member having a plurality of first contact portions, a plurality of second contact portions, and a plurality of connecting portions can be manufactured, wherein the first contact portions are spaced adjacent to each other and adjacent ones of the first contact portions are connected to a respective connection portion, the second contact portions spaced apart and spaced apart from one another first contact portions are arranged, and adjacent to the second contact portions are connected to a respective connection portion, and a first contact portion and a second contact portion, which are arranged adjacent to each other, are connected to one of the plurality of connecting portions.
  • Such a manufactured connecting element allows the simultaneous contacting of more than two battery cells, whereby, for example, a simultaneous series and parallel connection of a plurality of battery cells can be realized by means of a single connecting element.
  • the machining of the extruded profile may comprise a fragmentation of the extruded profile or of the semifinished product, the fragmenting comprising a severing of the extruded profile or of the semifinished product along the longitudinal direction, in order to form a plurality of further semi-finished products of the connecting element or a plurality of connecting elements.
  • the extruded profile can both be cut to length and then pieced together, and also first pieced and then cut to length to obtain a plurality of further semi-finished products which are further processed or a plurality of already completed fasteners.
  • the steps of cutting to length and of the piece may also comprise partitions from which two or more connecting elements are not directly formed, but only unwanted components of the semifinished product or of the further semifinished product are removed, such as overhangs or unused connecting sections.
  • connecting elements such as end pieces can be made in which a plurality of first contact portions m should be connected to respective first poles of respective first battery cells, but the second contact portions are only intended to connect a cable to a consumer with power of to supply the battery consisting of several battery cells.
  • a connecting element may be formed with a plurality of first contact sections and only a second contact section to which the cable is to be connected.
  • the machining of the extruded profile may include providing a bore in a section of the extruded profile, the semifinished product or the further semifinished product, which is intended to be formed as a first contact portion.
  • a bore in the contact section it can be located, for example, on a speaking formed pole of a battery cell plugged and screwed, or are engaged on a latching nose or undercut of a correspondingly shaped pole.
  • a method of manufacturing a battery includes providing a first battery cell and a second battery cell each having a first pole and a second pole, providing a connector manufactured by one of the methods described above, and connecting the first contact portion of the first battery cell Connecting element with the first pole of the first battery cell and connecting the second contact portion of the connecting element with the second pole of the second battery cell.
  • a battery of battery cells can be further constructed.
  • the battery cells are contacted with each other, or their poles, by means of the connecting elements, which were produced using an extrusion process.
  • a connector includes a first contact portion configured to be connected to a first pole of a first battery cell, a second contact portion configured to be connected to a second pole of a second battery cell, and a connection portion that connects the second terminal connects first contact portion and the second contact portion, wherein a cross-sectional shape of the connecting element is formed using an extrusion molding process.
  • the first contact portion, the connection portion, and the second contact portion are integrally formed, i. formed from a piece.
  • Such contacting or connecting elements for connecting poles of battery cells are also called battery cell connectors or cell contacting.
  • the first and / or second contact portion may be adapted to a shape of each of the first and second poles to which it is to be connected, so that a sufficiently large contact area between the contact portion and the pole of the battery cell becomes electrically effective, and Resistor for the current flow is small.
  • One possible shape of the contact portion is a flat surface when the pole is also flat.
  • Another possible form is a ring or shoe that is slipped over a pole.
  • the connecting portion is formed such that it is elastically deformed bar and has a rüm mte cross-sectional shape.
  • the first contact portion may be configured to enter into a positive and / or non-positive connection with the first pole
  • the second contact portion may be configured to form a positive and / or non-positive connection with the second pole.
  • the elastically deformable connecting portion has in particular a resilient action or spring action.
  • the first contact portion and the second contact portion can be moved relative to each other, whereby a first pole and a second pole can be connected by means of the connecting element whose distance does not correspond exactly to a predetermined distance.
  • the spring action caused by elastic or plastic deformation of the connecting portion thus causes a relaxation of the mechanical forces of the battery structure, as the spacing of the holes is easier, i.e., less so. by a smaller force than without this spring effect, is changeable.
  • the connecting portion and a mechanical bias can be effected, which binds the contact portions non-positively to the poles, for example by pressing or pulling.
  • the connecting element has a plurality of first contact sections, a plurality of second contact sections and a plurality of connection sections.
  • the cross-sectional shape of the connecting member is formed using the extrusion molding method, the plurality of elastically deformable connecting portions, each connecting two contact portions, and having, for example, a curved or bow-shaped cross-sectional shape, can be formed in one step, without the danger as in deep drawing is that the material breaks when the connecting portions together with the contact portions are deep-drawn in one step.
  • the cross-sectional shape of a connecting portion may be modeled after the shape of the large letter omega or that of an inverted U or a shaft.
  • the cross-sectional shape of the connecting portion may also include a plurality of portions each having one of these shapes of the omega, the inverted U, or the wave profile.
  • At least one of the first and second contact portions may comprise a clamp or be formed as such.
  • the Klam mer be connected force conclusive with it.
  • the pin has an undercut, the Klam mer engage in the undercut, thereby optionally additionally a positive connection can be made.
  • a battery according to an embodiment comprises a first battery cell and a second battery cell, each having a first pole and a second pole, and one of the above-described connecting elements, wherein the first pole of the first battery cell with the first contact portion of the connecting element, and the second pole the second battery cell are connected to the second contact portion of the connecting element.
  • a battery is constructed with the aid of one of the above-described connecting elements. This can be realized in a simple manner. The tooling is reduced, at least with respect to the production of the connecting elements. Also, a construction and rebuilding of the battery can be performed more easily, such as an exchange of battery cells.
  • Such a type of connection of the first pole and the second pole is suitable for simple and, if necessary, rapid assembly and conversion, as it may be particularly useful for small numbers, such as in the assembly of prototypes.
  • the first pole is a pole selected from a positive electrical pole and a minus negative pole
  • the second pole is the other pole selected from the positive electric pole and the negative negative pole.
  • the first and second battery cells may have a mechanical structure in which the first pole and the second pole are exposed.
  • the first and second poles may be formed as tabs or pegs that protrude beyond the volume of the actual battery cell to facilitate access for attachment of the connector.
  • connection between a pole of a battery cell and a contact portion of the connecting element can be done for example by screwing or pressing.
  • the battery may comprise a first number of first battery cells and a second number of second battery cells, the connecting element having a number of first contact sections corresponding to the number of first battery cells, a number of second contact sections corresponding to the number of second battery cells, and a plurality of connecting sections; the first contact portions are each connected to the first pole of a respective first battery cell, and the second contact portions are each connected to the second pole of a respective second battery cell.
  • the first battery cells form a group of battery cells, which are connected in parallel via the connecting element, and the second battery cells form a different group of battery cells, which are also connected in parallel via the connecting element, wherein the group and the other group are connected in series.
  • the battery may also have a plurality of further such groups of battery cells and a corresponding number of further connecting elements.
  • the first poles of the battery cells of one group can be connected to respective second poles of the battery cells of an adjacent group of battery cells by means of a connecting element, and in each case the second poles of the battery cells of the group are connected to respective first poles of the battery cells of another adjacent group by means of a connecting element be.
  • Those poles of a first group and a last group, which are not connected to the respective poles of the respective adjacent group, may be connected via a respective connecting element.
  • exposed ends, or contact portions that are not connected to a pole of a battery cell, of the respective connecting elements can be used, for example, to connect a cable through which current can be conducted from the battery to a consumer.
  • the cable can be connected for example via a cable lug with a free contact portion.
  • the battery cells are designed as high-voltage battery cells, so that the battery is formed overall as a high-voltage battery.
  • High-voltage batteries have special requirements for the electrical capabilities of the components, such as resistance, safety, mechanical strength.
  • the manufacturing process should be adapted to the small number of pieces.
  • 1 is a flowchart m for illustrating a method of manufacturing a connector for connecting poles of battery cells and manufacturing a battery;
  • FIG. 2 is an illustration for illustrating a step of manufacturing a blank for a connector for connecting poles of battery cells
  • FIG. 4 shows a battery according to an embodiment with battery cells, which are connected in series using connecting elements according to an embodiment
  • FIG. 5 shows a battery according to a further embodiment with battery cells which are connected in series and in parallel using connecting elements according to a further embodiment.
  • FIG. 1 shows a flow chart m for illustrating a method for producing a connecting element for connecting Tru of battery cells and for producing a battery according to one embodiment.
  • a compact such as a block or the like is provided from a metal material such as copper, a copper alloy, aluminum, an aluminum alloy or the like.
  • a tool for carrying out an extrusion process including a die with an opening
  • the opening of the die is selected or manufactured as a function of a battery to be produced and thus also as a function of a shape of the connecting element to be produced.
  • the opening 46 of the die 43 may include a plurality of straight line aligned spaced apart rectilinear slits 47, and a plurality of curved slits 48, each having a curved portion 48 connects two adjacent ones of the straight sections 47.
  • the compact is introduced into the tool in step S3 of FIG. 1 and, if necessary with the application of heat as illustrated in FIG. 2, moved along a first direction or pressing direction 45 relative to the die 43 such that a part of the material of the compact passes through the opening 46 of the die 43 is pressed, and an extruded profile 42, which is formed from the pressed-through part of the material of the compacts, is obtained.
  • the resulting extruded profile 42 has a cross-sectional shape along a direction perpendicular to the pressing direction 45 level substantially corresponding to that of the opening 46 of the die 43.
  • the extruded profile 42 is seen in a cross section perpendicular to the pressing direction 45 or perpendicular to the longitudinal direction of the extruded profile 42 a cross-sectional shape 44, which rectilinear, spaced apart portions 32, and kumm mum sections 31 summarizes that connect the straight sections 32.
  • the resulting extruded profile 42 serves as a blank for the connecting element to be produced, which is further processed in further steps of the method.
  • step S4 of FIG. 1 the blank is cut by means of a step of cutting along a direction transverse to the longitudinal direction of the extruded profile 42, for example along the plane which is perpendicular to the pressing direction 45, in particular along the in FIG Fig. 2 illustrated sectional plane CC, for example, using a saw, a
  • a distance from an end face 46 of the extruded profile 42 to the sectional plane C-C along the pressing direction 45 is selected such that the distance substantially corresponds to a predetermined width of the connecting element to be produced.
  • a part of the blank obtained by cutting to length can also function as a finished connecting element 11, 12 which has rectilinear, spaced-apart contact sections 16 and curved connecting sections 17 in cross-section along the sectional plane CC, the linear contact sections 16 comprising the curved connecting sections 17 connect.
  • the semi-finished product 41 obtained in step S4 may be further processed by severing the semifinished product 41 along its width direction, which in FIG. 2 corresponds to the pressing direction 45 or longitudinal direction of the extruded profile 42, for example using a saw, a cutting tool or the like in one place or at several locations.
  • the further semifinished product can be further processed with reference to FIG. 1 in an optional step S6 to produce a connecting element for connecting a first pole of a first battery cell and a second pole of a second battery cell.
  • the further processing of the further semifinished product may include, for example, a deburring and provision of holes or bores in sections of the further semifinished product, which are intended to function as contact portions of the connecting element.
  • the optional step S6 can also take place immediately after the step S3, ie after the extrusion step, or immediately after the step S4, ie after the step of cutting to length.
  • holes or bores 33 are already introduced into sections of the semifinished product 41, which are intended to act as contact sections 16, in particular as contact sections 16a and 16a of the connecting element 11.
  • the bores 33 may serve to engage, screw or otherwise secure the contact portions 16 of the connector 11 to respective poles 15a, 15b of a battery cell 14.
  • a plurality of battery cells for example, battery cells for a high-voltage battery, each having a positive pole and a negative pole are provided.
  • the provided battery cells are arranged as a function of the envisaged connection of the battery cells, that is to say as a function of the battery to be produced, in particular high-voltage battery.
  • the individual battery cells can be arranged side by side such that the positive pole of a battery cell is arranged in the vicinity of a respective negative pole of two adjacent battery cells, and the negative pole of the battery cell is arranged in the vicinity of a respective positive pole of the two adjacent battery cells.
  • a first contact portion of the connecting element with a first pole of a first battery cell, for example with a positive pole of the first battery cell, and a second contact portion of the connecting element connected to a second pole of a second battery cell, for example a negative terminal of the second battery cell.
  • a plurality of first contact sections of the connecting element can be connected to a respective first pole of a plurality of battery cells, and a plurality of second contact sections of the connecting element can be connected to a respective second pole of the plurality of battery cells.
  • the provision of the plurality of battery cells may include, for example, providing a plurality of battery cells, each having a positive pole and a negative pole, each having a latching nose.
  • connecting a contact portion of the connector to a pole of a battery cell may include engaging a corresponding pole of the battery cell into a bore formed in the contact portion.
  • providing the plurality of battery cells may include providing a plurality of battery cells each having a positive pole and a negative pole, each having a projection with an external thread.
  • connecting a contact portion of the connection member to a pole of a battery cell may include passing the projection through a bore formed in the contact portion, and screwing a nut onto the external thread to secure the contact portion between the nut and the battery cell men.
  • adjacent rectilinear contact portions of a respective connecting element are connected via respective curved connecting portions. Therefore, even in a case where respective poles to be connected from adjacent batteries riezellen have a distance from each other, which is different from a predetermined distance to a certain extent, to be connected poles connected by means of the connecting element by the bent mte connection portion is bent such that, for example, the distance between the holes of the two contact portions of the actual distance corresponds to the pole to be connected.
  • FIG. 4 illustrates a battery 1 according to an embodiment with a plurality of battery cells 14 arranged side by side and in series, FIG. 4A being a circuit diagram of the battery 1, FIG. 4B being a physical construction of the battery 1, and FIG. 4C is a cross-sectional view of the battery 1 shows.
  • the battery cells 14, which are preferably designed as high-voltage battery cells, each have a positive terminal 15 a and a negative terminal 15 b, which are arranged at respective remote ends on respective upper sides of the battery cells 14.
  • the battery cells 14 are aligned such that a positive pole 15a of a battery cell 14, which is arranged between two other battery cells 14, is disposed in the vicinity of respective negative poles 15b of the two adjacent battery cells 14, and a negative pole 15b of the battery cell 14 in the vicinity of respective plus poles 15b of the two adjacent battery cells 14 is arranged.
  • the positive terminal 15a of a battery cell 14 is connected to a negative pole 15b of an adjacent battery cell 14 of the respective connecting element 11, which has been produced in accordance with the method described with reference to FIG. 1, and a negative pole 15b the battery cell 14 with a positive pole 15a of the other of the two adjacent battery cells 14 by means of a respective connecting element 11, which was prepared according to the method described with reference to FIG.
  • a negative terminal 15b of a battery cell 14 disposed at a first end of the array of battery cells 14 and a positive terminal 15a of a battery cell 14 disposed at another end of the array of battery cells 14 are respectively connected to a respective end or contact portion of a respective connector 11.
  • the respective other end of the respective connection members 11 may be connected to a respective end of a respective cable 13 to make electrical connection with an unillustrated electrical device such as an electric motor of a vehicle and the electric motor with power from the battery 1 to supply.
  • Fig. 4C illustrates a cross-section of the battery 1 shown in Fig. 4A along the plane illustrated by C-C in Fig. 4B.
  • each of the connecting members 11 has a first rectilinear contact portion 16a, a second rectilinear contact portion 16b, and a crimped connection portion 17 connecting the first contact portion 16a and the second contact portion 16b.
  • the first contact portion 16a is connected to a positive pole 15a of a first battery cell 14, and the second contact portion 16b is connected to a negative pole 16b of a second, adjacent battery cell 14.
  • Fig. 5 illustrates a battery 1 A according to another embodiment with a plurality of juxtaposed battery cells 14, which are connected both in series and in parallel, wherein Fig. 5A is a circuit diagram of the battery 1 A, Fig. 5B shows a physical structure of the battery 1 A. and Fig. 5C shows a cross-sectional view of the battery 1A along the plane illustrated by CC in Fig. 5B.
  • Fig. 5A is a circuit diagram of the battery 1 A
  • Fig. 5B shows a physical structure of the battery 1 A.
  • Fig. 5C shows a cross-sectional view of the battery 1A along the plane illustrated by CC in Fig. 5B.
  • two adjacent battery cells 14 constituting a pair of battery cells 14 are arranged such that the positive poles 15a of the pair of adjacent battery cells 14 are juxtaposed are arranged, and the negative poles 15b of the pair of battery cells 14 are arranged side by side.
  • the pairs of battery cells 14 are arranged such that the two positive poles 15a of a first pair of battery cells are located near the two negative poles 15b of an adjacent second pair of battery cells, and the two negative poles 15b of the first pair of battery cells 14a are arranged near the two positive poles 15a of the second pair of battery cells.
  • connecting elements 12 are provided, which were prepared according to the method described with reference to FIG. 1, and the four each in cross-section rectilinear, spaced-apart contact portions 16, and three in cross-section curved connecting portions 17, which connect the contact portions 16.
  • two first contact portions 16 of a respective connecting element 12 are connected to the respective positive poles 15a and the respective negative poles 15b of a first pair of battery cells 14, and two second contact portions 16 of the connecting element 12 with the respective negative poles 15b and the respective positive poles 15a of a adjacent pairs of battery cells 14 connected.
  • the positive poles 15a of a pair of battery cells 14 arranged between two other adjacent pairs of battery cells 14 are connected to the negative poles 15b of a first of the two adjacent pairs of battery cells 14.
  • Rie cells 14 are connected, and the minus poles 15b of the pair of battery cells 14 connected to the positive poles 15a of a second of the two adjacent pairs of battery cells 14.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un élément de raccordement (11, 12) comportant une première partie de contact (16), conçue pour être connectée à un premier pôle (15a) d'un premier élément de batterie (14), une deuxième partie de contact (16), conçue pour être connectée à un deuxième pôle (15b) d'un deuxième élément de batterie (14), et une partie de raccordement (17) qui relie la première partie de contact (16) et la deuxième partie de contact (16), comprenant la mise à disposition d'un compact en un matériau métallique, la mise à disposition d'une matrice (43) comportant une ouverture (46), la forme d'au moins une partie de l'ouverture (46) étant choisie en fonction d'une forme de section transversale (44) du raccordement électrique (11, 12) à fabriquer, le pressage d'une partie du compact dans une direction de pressage (45) à travers l'ouverture (46) de la matrice (43) afin d'obtenir un profilé extrudé (42) ayant une direction longitudinale déterminée par la direction de pressage (44), et l'usinage du profilé extrudé (42) afin de fabriquer l'élément de raccordement (11, 12).
PCT/EP2017/051460 2016-02-24 2017-01-25 Procédé de fabrication d'un élément de raccordement électrique et élément de raccordement électrique pour éléments de batterie WO2017144214A1 (fr)

Applications Claiming Priority (2)

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DE102016202873.1A DE102016202873A1 (de) 2016-02-24 2016-02-24 Verfahren zur Herstellung eines elektrischen Verbindungselements und Verbindungselement für Batteriezellen
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