EP3895235A1 - Energiespeicherzelle, herstellungsverfahren und vorrichtung zum ausführen eines solchen - Google Patents
Energiespeicherzelle, herstellungsverfahren und vorrichtung zum ausführen eines solchenInfo
- Publication number
- EP3895235A1 EP3895235A1 EP19808737.1A EP19808737A EP3895235A1 EP 3895235 A1 EP3895235 A1 EP 3895235A1 EP 19808737 A EP19808737 A EP 19808737A EP 3895235 A1 EP3895235 A1 EP 3895235A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact arm
- arrester
- arrangement
- electrode stack
- current
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- H01M10/0404—Machines for assembling batteries
-
- 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
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
-
- 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
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- 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 present invention relates to a method for producing an electrochemical energy storage cell, an electrochemical energy storage cell produced with such a method and a device for carrying out such a production method.
- An electrochemical energy storage cell generally has two opposite-pole cell connections, via which the energy storage cell can be integrated into a circuit.
- the cell connections must be electrically connected to electrodes of the energy storage cell.
- current arresters are usually provided, which are derived from conductor tabs of e.g. electrodes arranged in an electrode stack lead to the cell connections.
- the energy storage cells generally have to meet strict requirements with regard to their dimensions so that the energy storage cells are efficient in the vehicle, e.g. can be installed in the floor of the passenger compartment.
- a first aspect of the invention relates to methods for producing electrochemical energy storage cells, comprising: (i) a positioning step in which a current conductor, which is set up to electrically connect an electrode stack to a cell connection and has a contact arm, is positioned relative to the electrode stack in this manner that an edge of the contact arm at abuts a first side surface of a conductor arrangement of the electrode stack which projects from the electrode stack; (ii) a bending step in which the arrester arrangement is bent around the edge of the contact arm in such a way that the first side surface of the arrester arrangement lies at least in sections on a first contact arm side surface; (iii) a support step in which the contact arm is supported on a second contact arm side surface opposite the first contact arm side surface; (iv) a pressing step in which a pressing pressure is exerted on the arrester
- the arrester arrangement can run flat at least in sections on the electrode stack, in particular along a side face of the electrode stack, and thus the space requirement of the arrester arrangement in the energy storage cell produced is reduced. In other words, this allows the current conductor to be guided particularly closely along the electrode stack.
- Pressing the arrester arrangement at least in sections onto the first contact arm side surface makes it possible to produce a particularly clean and durable connection, for example a weld seam, by means of which the current flow from the arrester arrangement into the current arrester or vice versa is not or at least only slightly inhibited.
- the at least partial pressing can in particular ensure that the contact area between the arrester arrangement and the current arrester is as large as possible.
- the arrester arrangement can be connected to the current arrester in a particularly reliable manner.
- an improved power line can also be achieved as a result.
- the arrester arrangement lying at least in sections on the first contact arm side surface and / or the first contact arm side surface for subsequent connection.
- the arrester arrangement and the first contact arm side surface can thus be positioned precisely with respect to a focused laser beam, thereby making efficient use of the Laser energy enables and unintentional damage, such as the electrode stack, can be prevented by the laser beam.
- the supporting step is carried out not only before the pressing step but also before the bending step in order to support the current arrester against forces which occur when the arrester arrangement is bent around the edge. This can prevent the current arrester from being damaged, for example bent, and / or being positioned unfavorably for the connection to be made in the connecting step.
- the present invention makes it possible to improve the current routing in electrochemical energy storage cells, in particular to increase the reliability of the current routing while at the same time requiring little space.
- the current conductor is positioned relative to the electrode stack in the positioning step in such a way that a gap is defined between the second contact arm side surface and the electrode stack.
- a support element for supporting the contact arm against the contact pressure is preferably introduced into the intermediate space.
- the support element is preferably positioned in the intermediate space in such a way that the second contact arm side surface flies at least in sections on the support element.
- the support element is removed from the intermediate space again after the arrester arrangement has been connected to the current arrester. In this way, for example, the weight of the energy storage cell produced can be reduced.
- a laser beam for welding the arrester arrangement to the current arrester is guided at least in sections along the contact arm, in particular along a step in the contact arm, which preferably runs along the contact arm.
- the laser beam is preferably designed as a focused laser beam.
- the current conductor can then be positioned in the positioning step in such a way that the first contact arm side surface, in particular the step in the contact arm, and / or the conductor arrangement bent thereon is located at least in sections in a focal point of the laser beam. The arrester arrangement and the current arrester can thus be welded particularly reliably and cleanly.
- the laser beam also allows the energy required to connect the contact arm to the arrester arrangement to be deposited precisely and / or selectively in the arrester arrangement and / or the contact arm, so that the arrester arrangement and / or the contact arm are only heated locally, for example, and the electrode stack is not is damaged by accidental heat input.
- the method further comprises: (i) an attachment step in which a connector is attached to a second side surface of the arrester assembly opposite the first side surface in such a way that when the arrester assembly is bent around the edge of the contact arm, the connector is connected to a Step of the contact arm, which runs along the contact arm, is essentially flush.
- the contact arm can be step-shaped or, in particular on the first contact arm side surface, have a step. Because the connecting element is essentially flush with the step and preferably flush with the step, the connecting element can be connected to the current arrester in a clean and particularly stable manner, for example by guiding the laser beam along a contact line between the connecting element and step.
- the connector is attached to the second side surface by ultrasonic welding. As a result, the connecting element can be quickly and reliably attached to the second side surface, in particular precisely arranged on the second side surface.
- the method further comprises: (i) an alignment step in which at least one positioning pin passage in the connecting element and at least one corresponding positioning pin passage in the contact arm is penetrated by a positioning pin.
- the at least one positioning pin penetration in the connecting element and / or the at least one positioning pin penetration in the contact arm can be arranged on the connecting element or on the contact arm such that the positioning pin penetrations are aligned with one another by bending the arrester arrangement around the edge of the contact arm. Passing through the positioning pin penetrations with the at least one positioning pin permits a particularly precise alignment of the arrester arrangement relative to the current arrester, and in particular a reliable securing of the position of the arrester arrangement relative to the current arrester during the connection step, in particular during laser welding. This is advantageous in relation to the quality of the connection made, e.g. the weld.
- the arrester arrangement of the, in particular first, electrode stack in the positioning step, together with a further arrester arrangement of a further, in particular second, electrode stack is placed together in a between the, in particular first, contact arm of the current conductor and a further, in particular second, parallel, contact arm of the current conductor defined contact arm space inserted so that the second side surface of the arrester arrangement is opposite a second side surface of the further arrester arrangement.
- a first electrode stack and a second electrode stack can be bundled, ie combined, so that the current conductor can be positioned relative to the arrester arrangements of the two electrode stacks at the same time. This enables an improvement in the precision with which the current arrester is positioned relative to the arrester arrangements.
- the two contact arms of the current diverter serve as guide rails for the arrester arrangements of the two electrode stacks.
- the arrester arrangements of the two electrode stacks are preferably designed, in particular aligned, such that a second side surface of the arrester arrangement of the first electrode stack faces the arrester arrangement of the second electrode stack or a second side surface of the arrester arrangement of the second electrode stack faces the arrester arrangement of the first electrode stack.
- the first and the second electrode stack, in particular the arrester arrangements of the two electrode stacks can be formed symmetrically with respect to a plane of symmetry, the plane of symmetry preferably being defined by a contact area between the first electrode stack and the second electrode stack.
- At least the bending step, the supporting step, the pressing step and the connecting step are carried out for each of the two arrester arrangements, in particular at least essentially simultaneously.
- a second aspect of the invention relates to an electrochemical energy storage cell which can be obtained according to the method according to the first aspect of the invention.
- a third aspect of the invention relates to a device for producing an electrochemical energy storage cell, which is set up to carry out a method according to the first aspect of the invention.
- the device has at least one support element which is set up to support the contact arm of a current conductor against a contact pressure acting on the contact arm, in particular on a conductor arrangement resting at least in sections on the contact arm.
- the device is preferably set up to introduce the at least one support element into an intermediate space formed between the contact arm and an electrode stack, for example to pivot it in, and after the contact arm connected to the arrester arrangement, for example welded, was to be removed again from the intermediate space, for example by pivoting it out.
- the device has at least one connection module which is set up to connect the current arrester, in particular at least one contact arm of the current arrester, to at least one arrester arrangement, in particular cohesively and / or electrically conductively.
- the connection module is preferably set up to weld the current arrester to the arrester arrangement using a laser beam.
- the connecting means can, for example, have a radiation source which is set up to generate the laser beam, the generated laser beam preferably having a focal point at which the laser beam is focused.
- the radiation source can be set up to manipulate the laser beam in such a way, e.g. to deflect that the focal point is guided along at least one welding line, in particular a contact line between the arrester arrangement or the connecting element and the step of the contact arm.
- the current conductor is preferably positioned relative to the electrode stack in such a way that the current conductor lies at least in sections in the focus point, in particular runs along the welding line.
- the current arrester can be easily and reliably connected to the arrester arrangement.
- Figure 1 shows a preferred embodiment of an energy storage cell according to the invention in an exploded view.
- 2 shows a preferred embodiment of a current arrester
- FIG. 3 shows a detailed view of an energy storage cell in a first preferred assembly step in the production of the energy storage cell
- FIG. 4 shows a detailed view of an energy storage cell in a second preferred assembly step in the production of the energy storage cell
- FIG. 5 shows a cross section of the detailed view from FIG. 4.
- Fig. 6 shows a preferred embodiment of a method according to the invention.
- the energy storage cell 1 shows a preferred exemplary embodiment of an electrochemical energy storage cell 1 according to the invention in an exploded view.
- the energy storage cell 1 has two electrode stacks 2a, 2b with arrester arrangements 3a, 3b protruding from the electrode stacks 2a, 2b, two current conductors 4, two connection elements 5 arranged in a housing cover 6 and a housing 7.
- the current arresters 4 are electrically conductively connected to the arrester arrangements 3a, 3b via connecting elements 8a, 8b.
- the current arresters 4 are also electrically conductively connected to the connection elements 5, so that the energy storage cell 1 can be integrated into a circuit, for example into an electrical system of a vehicle, via the connection elements 5.
- the electrode stacks 2a, 2b are held together with the current conductors 4, alternatively or additionally with the housing cover 6, in a preferred manner by side brackets 9. But at least the side brackets 9 stabilize the arrangement of electrode stacks 2a, 2b and current conductors 4, alternatively or additionally also housing cover 6.
- the electrode stacks 2a, 2b and at least in sections also the current conductors 4 are preferably electrically insulated from the housing 7 by an insulating element 10.
- the insulating element 10 can be designed, for example, as an insulating tape, which preferably extends around the electrode stacks 2a, 2b and at least a portion of the current conductor 4, optionally also around the side brackets 9, is wound.
- the housing cover preferably has a filling opening 11 via which the energy storage cell 1 can be filled, for example, with an electrolyte.
- the filling opening 11 can have, for example, a valve, in particular a check valve, which prevents the electrolyte filled in the energy storage cell 1 from escaping.
- the filling opening 11 can also be closed with a filling opening closure 11a.
- FIG. 2 shows a preferred embodiment of a current conductor 4, via which conductor arrangements of two electrode stacks arranged next to one another can be electrically conductively connected to a connection element of an electrochemical energy storage cell.
- the current collector 4 has a first current collector region 41 which is spatially separated from a second current collector region 42 by a curvature region 40 in which the current collector 4 is curved, in particular by 90 °.
- the current conductor 4 can be connected in an electrically conductive manner to a connecting element, for example by a connecting means (not shown), in particular rod-shaped, which engages in a corresponding connecting means receptacle 43 of the current conductor 4 arranged in the first area 41, e.g. is screwed in.
- the current conductor 4 preferably has two, in particular parallel, contact arms 4a, 4b which are provided for connection to the arrester arrangements.
- the contact arms 4a, 4b preferably protrude like clips in order to accommodate the arrester arrangements between them.
- the contact arms 4a, 4b define between them a contact arm gap 44 into which the arrester arrangements can be inserted, for example.
- the current conductor 42 also preferably has positioning pin penetrations 45, in particular two positioning pin penetrations 45 per contact arm 4a, 4b. With the help of Fe 45 introduced positioning pins, the arrester arrangements can be aligned relative to the current conductor 4.
- the contact arms 4a, 4b are preferably stepped, i.e. they each preferably have a step 49a, 49b which runs along the respective contact arm 4a, 4b.
- the stage 49a, 49b can also be used to align the arrester arrangement relative to the current arrester 4.
- the stages 49a, 49b make it possible to establish a reliable integral connection between the arrester arrangements and the current arrester 4, in particular by the arrester arrangements in each case at least in the region of the stages 49a, 49b with the current arrester 4, in particular with the respective contact arm 4a, 4b , are welded.
- a laser beam can be guided along each of the two stages 49a, 49b in order to weld the respective arrester arrangement to the current conductor 4.
- FIG. 3 shows a detailed view of an energy storage cell 1 in a first preferred assembly step in the production of the energy storage cell 1.
- At least one current conductor 4 is connected to a connection element 5 embedded in a housing cover 6 and positioned relative to two electrode stacks 2a, 2b in such a way that from the side Electrode stacks 2a, 2b excellent arrester arrangements 3a, 3b are arranged in a contact arm space 44 defined between two parallel contact arms 4a, 4b of the current conductor 4.
- the arrester arrangements 3a, 3b protruding laterally from the electrode stacks 2a, 2b preferably run perpendicular to the current conductor 4 in a second region 42 of the current conductor 4, in which the contact arms 4a, 4b are also arranged.
- the arrester arrangements 3a, 3b penetrate a plane spanned by the two contact arms 4a, 4b.
- the arrester arrangements 3a, 3b preferably each have a first side surface 30a, 30b on an edge 46a, 46b of a contact arm 4a, 4b.
- a connecting element 8a is attached to a first of the arrester arrangements 3a, in particular by a material connection, for example by ultrasonic welding.
- the connecting element 8a is preferably on one of the arranged first side surface 30a of the second arrester arrangement 3a opposite second side surface 31a.
- the connecting element 8a is arranged on a second side surface 31a of the first arrester arrangement 3a, which faces a second side surface 31b of a second one of the arrester arrangements 3b.
- arrester arrays 3a, 3b protruding laterally from electrode stacks, each of which abuts an edge 46a, 46b of contact arms 4a, 4b of a current arrester 4 the respective edge 46a, 46b bent. This is indicated by the arrow B for a first one of the arrester arrangements 3a.
- a first side surface (see FIG. 3) of the arrester arrangements 3a, 3b lies at least in sections on a first contact arm side surface 47a, 47b.
- a connecting element 8a is attached to the first arrester arrangement 3a, in particular on a second side surface 31a opposite the first side surface.
- a connecting element attached to a second of the arrester arrangements 4b, in particular on a second side surface 31b, is not shown.
- the connecting element 8a is preferably arranged on the second side surface 31a of the first arrester arrangement 3a such that when the first arrester arrangement 3a is bent around the edge 46a, it is essentially flush with a step 49a of the current conductor 4 running along the contact office 4a, in particular of the first contact arm 4a.
- the connecting element (not shown) attached to the second arrester arrangement 4b also preferably lies flush against a step 49b of the second contact arm 4b.
- positioning pins can be guided through corresponding positioning pin penetrations 35 of the connecting element 8a and corresponding positioning pin penetrations 45 of the contact arms 4a, 4b (see FIG. 2).
- the positioning pin penetrations 35 in the connecting element 32 are preferably arranged concentrically with respect to the positioning pin penetrations 45 of the contact arms 4a, 4b by the bending of the arrester arrangements 3a, 3b around the respective edge 46a, 46b, so that they can easily be penetrated by one positioning pin each.
- a positioning pin passage 35 of the contact arms 4a, 4b is aligned with a positioning pin passage 45 of the connecting element 8a.
- a laser beam can be guided along each contact arm 4a, 4b, so that the arrester arrangements 3a, 3b, in particular the connecting element 8a, with the current arrester 4, in particular with the respective contact arm 4a, 4b, is welded.
- the laser beam is preferably guided along the steps 49a, 49b.
- the first side surfaces (see FIG. 3) at least in sections lie flat on the first contact arm side surfaces 47a, 47b
- pressure is preferably applied to the arrester arrangements 3a, 3b, in particular to the second side surfaces 31a, 31b or to the connecting element 8a, exercised.
- This contact pressure can be intercepted by support elements (not shown) which are arranged under the contact arms 4a, 4b, i.e. are inserted into a space between the contact arms 4a, 4b and the electrode stacks, and the contact arms 4a, 4b are preferably supported on the second contact arm side surfaces opposite the first contact arm side surfaces 47a, 47b.
- FIG. 5 shows a cross section of the detailed view from FIG. 4. Here, the steps 49a, 49b in the two contact arms 4a, 4b are clearly visible.
- a first section 50a, 50b and a second section 51a, 51b of the first contact arm side surfaces 47a, 47b are preferably defined in each case by the steps 49a, 49b, the arrester arrangements 3a, 3b in each case around the edges 46a, 46b of the two contact arms 4a , 4b are bent such that the first side surfaces 30a, 30b of the arrester arrangements 3a, 3b each rest, at least in sections, in the first section 50a, 50b of the first contact arm side surfaces 47a, 47b.
- the connecting element 8a also shown in FIG.
- contact arms 4a, 4b are welded to the curved arrester arrangements 3a, 3b, a contact pressure is preferably exerted on the arrester arrangements 3a, 3b, support elements 60a, 60b are or are defined in one between the contact arms 4a, 4b and the cell stacks 2a, 2b Space 61 arranged.
- the contact arms 4a, 4b preferably lie at least in sections with the second contact arm side surfaces 48a, 48b on the support elements 60.
- the support elements 60 can in particular be arranged in the intermediate space 61, which is provided by the steps 49a, 49b between the contact arms 4a, 4b and the electrode stacks 2a, 2b.
- the contact arms 4a, 4b preferably rest with second underside sections 52a, 52b of the second contact arm side surfaces 48a, 48b on the support elements 60, the second underside sections 52a, 52b and first underside sections 53a, 53b of the second contact arm side surfaces 48a, 48b through the steps 49a, 49b are defined.
- the second underside sections 52a, 52b lie in preferably opposite the second sections 51a, 51b of the first contact arm side surfaces 47a, 47b.
- FIG. 6 shows a preferred embodiment of a method 100 according to the invention for producing electrochemical energy storage cells 1.
- an electrode stack 2a is provided, for example by stacking a plurality of positive electrodes and a plurality of negative electrodes alternately on top of one another.
- Each of the electrodes has a conductor tab 2a ′ which protrudes from the electrode stack 2a.
- the conductor tabs 2a ' are arranged or designed such that the conductor tabs 2a' of positive electrodes and the conductor tabs 2a 'of negative electrodes protrude from the electrode stack 2a on opposite sides of the electrode stack 2a.
- Two arrester arrangements in particular one with the positive electrodes and one with the negative electrodes corresponding arrester arrangement, are produced from the arrester tabs 2a ', for example by pressing the arrester tabs 2a' made of foil together.
- a connecting element 8a can then be attached to a second side surface 31a of the arrester arrangement formed in this way, for example by ultrasonic welding.
- the second side surface 31a lies opposite a first side surface 30a of the arrester arrangement, as is shown in the detailed view corresponding to the attachment step S2 and indicated by the dashed line.
- the preparation step S1 and the attachment step S2 are preferably carried out at least a second time in order to produce a further electrode stack 2b with two arrester arrangements and connecting elements attached to them.
- the prepared electrode stack 2a can be divided in the preparation step S1 and the second electrode stack 2b can thereby be generated.
- the connecting elements are preferably attached to the arrester arrangements of the second electrode stack 2b in such a way that the connecting elements 32 attached to the arrester arrangements of the first electrode stack 2a face the connecting elements attached to the arrester arrangements of the second electrode stack 2b.
- the first and second electrode stacks 2a, 2b prepared in this way are bundled with the connecting elements facing one another.
- the current arresters 4 are positioned relative to the arrester arrangements, so that two arrester arrangements are arranged in a space 44, which is defined between two contact arms 4a, 4b of the respective current arrester 4.
- the housing cover 6 with the current conductors 4 can be placed on the two electrode stacks 2b, 2a, so that the arrester arrangements each slide between the contact arms 4a, 4b of the current conductors 4.
- the arrester arrangements preferably lie with the first side surface against an edge of one of the contact arms 4a, 4b, as is shown in the detailed view corresponding to the positioning step S4 and indicated by the dashed line.
- the arrester arrangements are bent around the respective edge of the contact arms 4a, 4b, so that the first side surfaces of the arrester arrangements lie at least in sections on the respective first contact arm side surfaces 47a, 47b.
- the arrester arrangements and contact arms 4a, 4b prepared in this way are supported in a support step S6 on the second contact arm side surfaces opposite the first contact arm side surfaces 47a, 47b, for example by supporting elements in an intermediate space between the contact arms 4a, 4b and the electrode stacks 2a, 2b, in particular the side surfaces the electrode stack 2a, 2b is defined.
- a contact pressure can be applied to the conductor arrangements lying at least in sections on the first contact arm side surfaces 47a, 47b, whereby the conductor arrangements are preferably pressed flat onto the first contact arm side surfaces 47a, 47b.
- the crash step S6 is carried out before the bending step S5 in order to intercept forces occurring with the support elements when the arrester arrangements are bent by the respective edge. In this way, for example, an undesired deformation of the contact arms 4a, 4b can be avoided.
- a connecting step S8 the arrester arrangements, in particular the connecting elements, are connected to the current arresters 4, in particular to the contact arms 4a, 4b, for example by laser welding.
- a laser beam is preferably guided along each contact arm 4a, 4b, for example along steps 49a, 49b formed in the contact arms 4a, 4b, with which the connecting elements are preferably flush and / or flush, as is the case with the connecting step S8
- Corresponding detailed view indicated by the dashed line is shown.
- a securing step S9 the two electrode stacks 2a, 2b, preferably with the current conductors 4, are secured by side brackets 9, for example fixed by gripping at least in sections.
- the electrode stacks 2a, 2b fixed in this way can then be electrically insulated in an insulation step S10 with an insulation element 10, in particular with respect to a housing 7 into which the electrode stacks 2a, 2b are inserted.
- a sealing step S1 1 the housing 7 and the housing cover 6 are connected to one another, in particular welded, preferably by laser welding.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018132179.1A DE102018132179A1 (de) | 2018-12-13 | 2018-12-13 | Energiespeicherzelle, Herstellungsverfahren und Vorrichtung zum Ausführen eines Solchen |
| PCT/EP2019/081824 WO2020120081A1 (de) | 2018-12-13 | 2019-11-19 | Energiespeicherzelle, herstellungsverfahren und vorrichtung zum ausführen eines solchen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3895235A1 true EP3895235A1 (de) | 2021-10-20 |
Family
ID=68654462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19808737.1A Pending EP3895235A1 (de) | 2018-12-13 | 2019-11-19 | Energiespeicherzelle, herstellungsverfahren und vorrichtung zum ausführen eines solchen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11855249B2 (de) |
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| KR (1) | KR102605750B1 (de) |
| CN (1) | CN112913077B (de) |
| DE (1) | DE102018132179A1 (de) |
| WO (1) | WO2020120081A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018132179A1 (de) * | 2018-12-13 | 2020-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Energiespeicherzelle, Herstellungsverfahren und Vorrichtung zum Ausführen eines Solchen |
| DE102020108579A1 (de) | 2020-03-27 | 2021-09-30 | Bayerische Motoren Werke Aktiengesellschaft | Stromkollektor für eine Energiespeicherzelle |
| CN113381104B (zh) * | 2021-06-03 | 2024-09-03 | 格力钛新能源股份有限公司 | 电池用盖板组件及电池装置 |
| CN113394493A (zh) * | 2021-06-25 | 2021-09-14 | 银隆新能源股份有限公司 | 锂离子电池及具有其的电动车 |
| US20250202079A1 (en) * | 2023-12-15 | 2025-06-19 | GM Global Technology Operations LLC | Terminal connection with cover plates for external tabs of battery cells |
| EP4574331A1 (de) * | 2023-12-18 | 2025-06-25 | Automotive Cells Company SE | Verfahren zur herstellung einer elektrochemischen zelle mit schwenkbaren werkzeugen |
| EP4576291A1 (de) * | 2023-12-18 | 2025-06-25 | Automotive Cells Company SE | Verfahren zur herstellung einer elektrochemischen zelle mit gleitwerkzeugen |
| EP4576290A1 (de) * | 2023-12-18 | 2025-06-25 | Automotive Cells Company SE | Verfahren zur herstellung einer elektrochemischen zelle |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838838B2 (ja) * | 1978-11-17 | 1983-08-25 | 三菱電機株式会社 | バス運行制御装置 |
| JP4986441B2 (ja) * | 2005-11-24 | 2012-07-25 | 三洋電機株式会社 | 角形電池 |
| JP5157500B2 (ja) * | 2008-02-06 | 2013-03-06 | ソニー株式会社 | 非水電解質電池およびその製造方法 |
| JP4995297B2 (ja) | 2010-03-26 | 2012-08-08 | 三菱重工業株式会社 | 電池、及びこの電池の製造に用いられる超音波溶接システム |
| US8889292B2 (en) | 2011-10-13 | 2014-11-18 | Samsung Sdi Co., Ltd. | Rechargeable battery |
| JP5838838B2 (ja) * | 2012-02-06 | 2016-01-06 | 株式会社豊田自動織機 | 蓄電装置、及び車両 |
| DE102012217478A1 (de) * | 2012-09-26 | 2014-03-27 | Robert Bosch Gmbh | Batteriezelle mit Stromabnehmer zur Gehäusekontaktierung |
| KR101702985B1 (ko) * | 2013-04-17 | 2017-02-06 | 삼성에스디아이 주식회사 | 이차 전지 |
| US10396334B2 (en) * | 2014-03-31 | 2019-08-27 | Lg Chem, Ltd. | Battery module and battery pack comprising same |
| DE102014014529A1 (de) * | 2014-09-30 | 2016-03-31 | Daimler Ag | Einzelzelle für einen elektrochemischen Energiespeicher |
| DE102014019505A1 (de) * | 2014-12-23 | 2016-06-23 | Daimler Ag | Einzelzelle und Zellblock für eine elektrische Batterie |
| US10403875B2 (en) | 2015-04-14 | 2019-09-03 | Ford Global Technologies, Llc | Busbar assembly for vehicle traction battery |
| CN108258180B (zh) * | 2018-01-16 | 2020-09-29 | 宁德时代新能源科技股份有限公司 | 集流构件和电池 |
| DE102018132179A1 (de) * | 2018-12-13 | 2020-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Energiespeicherzelle, Herstellungsverfahren und Vorrichtung zum Ausführen eines Solchen |
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2018
- 2018-12-13 DE DE102018132179.1A patent/DE102018132179A1/de active Pending
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- 2019-11-19 WO PCT/EP2019/081824 patent/WO2020120081A1/de not_active Ceased
- 2019-11-19 CN CN201980069684.1A patent/CN112913077B/zh active Active
- 2019-11-19 EP EP19808737.1A patent/EP3895235A1/de active Pending
- 2019-11-19 KR KR1020217010262A patent/KR102605750B1/ko active Active
- 2019-11-19 US US17/295,313 patent/US11855249B2/en active Active
- 2019-11-19 JP JP2021526280A patent/JP7386864B2/ja active Active
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| Publication number | Publication date |
|---|---|
| CN112913077B (zh) | 2023-08-08 |
| CN112913077A (zh) | 2021-06-04 |
| KR20210057093A (ko) | 2021-05-20 |
| JP2022512073A (ja) | 2022-02-02 |
| DE102018132179A1 (de) | 2020-06-18 |
| US11855249B2 (en) | 2023-12-26 |
| US20220013804A1 (en) | 2022-01-13 |
| JP7386864B2 (ja) | 2023-11-27 |
| WO2020120081A1 (de) | 2020-06-18 |
| KR102605750B1 (ko) | 2023-11-23 |
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