EP3161884A2 - Dispositif de contact pour la mise en contact d'une cellule d'accumulation d'énergie - Google Patents

Dispositif de contact pour la mise en contact d'une cellule d'accumulation d'énergie

Info

Publication number
EP3161884A2
EP3161884A2 EP15730503.8A EP15730503A EP3161884A2 EP 3161884 A2 EP3161884 A2 EP 3161884A2 EP 15730503 A EP15730503 A EP 15730503A EP 3161884 A2 EP3161884 A2 EP 3161884A2
Authority
EP
European Patent Office
Prior art keywords
energy storage
clip
storage cell
circuit board
printed circuit
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.)
Withdrawn
Application number
EP15730503.8A
Other languages
German (de)
English (en)
Inventor
Markus Lienkamp
Martin Rudolf HAMMER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universitaet Muenchen
Original Assignee
Technische Universitaet Muenchen
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 Technische Universitaet Muenchen filed Critical Technische Universitaet Muenchen
Publication of EP3161884A2 publication Critical patent/EP3161884A2/fr
Withdrawn legal-status Critical Current

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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
    • H01R11/282—End pieces consisting of a ferrule or sleeve for connections to batteries comprising means for facilitating engagement or disengagement, e.g. quick release terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/7017—Snap means
    • H01R12/7029—Snap means not integral with the coupling device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7076—Coupling devices for connection between PCB and component, e.g. display
    • 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 contacting device for contacting an energy storage cell and more particularly to a contacting device for non-positive contacting of cylindrical round cells with a printed circuit board or printed circuit board.
  • a contacting device for contacting an energy storage cell In many applications it is necessary to store electrical energy. In particular, for vehicles with electric drive or electric motor, it is necessary to provide electrical charge to a sufficient extent available and to store in an energy storage of the vehicle. Electric vehicles, in particular electric cars or electric bicycles, require powerful electric storage systems for their drive, which provide sufficient electrical energy for an electric drive, in particular for an electric motor. In many cases, lithium-ion batteries are used for this purpose. In order to provide the required amount of electrical energy, a plurality of energy storage cells, in particular battery cells, are combined to form a composite or a battery pack.
  • the contacting of the energy storage cells takes place by means of conventional contacting methods, in particular by means of resistance welding, laser welding or clamping.
  • These conventional contacting methods have a relatively high complexity, wherein the contacting of the plurality of energy storage cells within a housing of an energy store takes a long time and causes a high production cost.
  • the contacted energy storage cells are within such a put energy storage system or only with considerable effort interchangeable.
  • the energy storage cells used in a conventional energy storage system sometimes have a very high energy density, so that the energy storage cells or battery cells can overheat during charging or discharging.
  • the energy storage cells contacted with conventional contacting devices offer only relatively limited possibilities for sufficiently cooling the energy storage cells.
  • the invention accordingly provides a contacting device for contacting an energy storage cell with at least one printed circuit board, which is provided for dissipating the electrical energy stored in the energy storage cell, wherein at least one electrical pole of the energy storage cell by a releasable mechanical connection with a certain contact pressure against an electrically conductive layer at least one printed circuit board is pressed, which is located on a front of the energy storage cell side facing the at least one printed circuit board.
  • the contacting device according to the invention allows a simple and defined positioning of the energy storage cell on the printed circuit board, which serves for the derivation of the stored energy in the energy storage cell.
  • the releasable mechanical connection generates a defined contact force, which can be achieved by a frictional contact of the energy storage cell on one side of the energy storage cell, so that a derivative of the electrical energy stored therein can be carried out by means of a single printed circuit board.
  • the one-sided contacting of the energy storage cells with a printed circuit board also advantageously offers more degrees of freedom for cooling the energy storage cells.
  • the energy storage cells after they have been attached to one side of the printed circuit board by means of the contacting device according to the invention, are immersed in a cooling medium container filled with a cooling medium or circulated around by a supplied air stream.
  • Another advantage of the contacting device according to the invention is that defective energy storage cells can be replaced in a simple manner due to the releasable mechanical connection.
  • the releasable mechanical connection has a releasable mechanical clip connection with at least one clip.
  • the releasable mechanical connection has a rotary closure, in particular a bayonet closure.
  • the energy storage cell is a cylindrical energy storage cell which has at least one circumferential groove in its outer surface into which at least one clip hook of the at least one clip of the releasable mechanical clip connection engages.
  • the energy storage cell may be a standardized round cell, in particular a 18650 cell, which, due to its production, already has a radial embossing or a circumferential groove on its lateral surface. In this embodiment of the contacting device according to the invention, use is therefore made of the fact that standardized round cells already have circumferential grooves or impressions in their lateral surface due to production.
  • the cylindrical energy storage cell has as a round cell on one end face a first electrical pole, in particular a plus pole with positive potential, which is connected by the at least one clip of the detachable mechanical clip connection via a contact pressed against an electrically conductive layer of the printed circuit board and is preferably fixed there.
  • the cylindrical energy storage cell on its outer surface and the other end side on a second electrical pole, in particular a negative pole with negative potential, which through the at least one clip of another releasable mechanical clip connection via a Anothermaschinetechniksseheibe is pressed against an electrically conductive layer of another printed circuit board.
  • the at least one clip of the releasable mechanical clip connection has a clip that extends through a corresponding hole in the printed circuit board and has a clip head that secures the printed circuit board for fixing the at least one clip mechanical clip connection engages behind.
  • the inventive contacting device is provided between the clip head of the at least one clip of the detachable mechanical clip connection and an edge of the bore of the printed circuit board, a mechanical biasing spring, in particular a plate spring or a spring ring with a certain biasing force.
  • the bore of the printed circuit board ⁇ through which the neck of the clip through at least one of the clips releasable mechanical clip connection he stretches ⁇ sealed by a seal comprising a penetration gene of a fluid, in particular water, prevented from the outside to the energy storage cell.
  • the seal is pressed on emergence of an overpressure on the energy storage cell side facing the printed circuit board to the outside, so that a resulting on the side of the energy storage cell pressure is reduced.
  • the at least one clip of the releasable mechanical clip connection is designed to be electrically conductive.
  • the at least one electrically conductive clip on an electrically conductive Klipphals which rests on a contact plate on the lateral surface of the cylindrical energy storage cell having a second electrical pole of the energy storage cell, wherein the electrically conductive Klipphals extends through a bore of the printed circuit board and the at least one electrically conductive clip contacts the second electrical pole of the energy storage cell via its electrically conductive clip and its electrically conductive clip head and at least one further contacting disc with an electrically conductive layer, which is located on a rear side of the printed circuit board facing away from the energy storage cell located.
  • inventive contacting device is between the electrically conductive clip head of at least one electrically conductive clip and an edge of the bore of the printed circuit board, a mechanical biasing spring, in particular a plate spring or a spring washer, provided with a certain biasing force.
  • the lateral surface of the cylindrical energy storage cell having the second electrical pole of the energy storage cell is pressed by the detachable mechanical clip connection via a Mullleitersschei- against another separate electrically conductive layer, which is also on the located at the front of the energy storage cell side facing the printed circuit board.
  • the releasable mechanical clip connection has at least one SMD clip, which is soldered to the electrically conductive layer, which is located on the front, the energy storage cell side facing.
  • the releasable mechanical clip connection has at least one SMD clip, which is integrally formed on the printed circuit board.
  • the energy storage cell is a cylindrical energy storage cell having on its lateral surface at least one circumferential groove into which at least one clip hooks from the at least one SMD clip of the releasable mechanical clip connection.
  • the contacting ments of an elastic material in particular of an elastic polymer material, which is both electrically and thermally conductive.
  • the invention further provides an energy storage system for storing electrical energy having the features specified in claim 17.
  • the invention accordingly provides an energy storage system for storing electrical energy in a plurality of energy storage cells, wherein the energy storage cells are each mounted by a contacting device on a printed circuit board of the energy storage system for the derivation of stored in the respective energy storage cell electrical energy, wherein the contacting device, which for contacting the each energy storage cell with the circuit board is used, having a releasable mechanical connection, which presses the energy storage cell with a certain contact force against an electrically conductive layer, which is located on a front, the energy storage cell side facing the printed circuit board.
  • the energy storage cells attached to the printed circuit board are immersed for their cooling in a cooling medium container filled with a cooling medium.
  • the energy storage cells attached to the printed circuit board are surrounded by an air stream for their cooling.
  • the invention further provides an electric vehicle with an energy storage system having the features specified in claim 19.
  • possible embodiments of the Invention ⁇ gema touch contacting device and the energy storage system according to the invention are explained in detail with reference to the accompanying figures. Show it:
  • Fig. 1 is a sketch for illustrating a schematic
  • FIG. 2 shows a sketch for illustrating a heat flow in a cylindrical energy storage cell according to FIG. 1;
  • FIG. 3 is a schematic representation of an embodiment variant of the contacting device according to the invention.
  • FIG. 4 shows a schematic illustration of a further embodiment variant of the contacting device according to the invention
  • Fig. 5 is a schematic representation of several at one
  • the contacting device according to the invention is used for contacting an energy storage cell, ESZ, in particular a cylindrical or cylindrical energy storage cell or round cell.
  • the contacting device according to the invention is particularly suitable for contacting a cylindrical energy storage cell of the type 18650 (diameter 18 mm, length 65 mm) or type 26650 (diameter 26 mm, length 65 mm) or similar standardized cylindrical energy storage cells, as shown schematically in FIG. 1 is shown.
  • Such an energy storage cell 1 has two end faces and a lateral surface.
  • the energy storage cell 1 shown in FIG. 1 has an electrical positive pole 2 with a positive potential.
  • 1 positive electrical pole 2 is electrically isolated in a metal cup 3 of the energy storage cell 1, which forms a second electrical pole, namely a negative pole with a negative electrical potential.
  • the first electrical pole 2 is electrically insulated from the second electrical pole 3 of the energy storage cell 1, as indicated in FIG. 1.
  • Memory cell 1 is the active material of the cell, which stores the electrical energy.
  • the heating of the individual energy storage cell takes place in the active material, which is rolled up, for example, in a so-called “jellyroll.”
  • the active material is located inside the metallic cup 3 of the energy storage cell 1, which consists for example of steel or a similar material Heat dissipation in the cylindrical energy storage cell 1 shown in Fig. 1.
  • the heat is generated within the active material, wherein the resulting heat W can be derived via heat flows Q.
  • the internally generated heat W can be emitted or discharged via the jacket 3 or the cup 3 via a heat flow Q 1.
  • the resulting heat W can be dissipated via the cell bottom of the energy storage cell 1 via a heat flow Q3.
  • a portion of the resulting heat W via a heat flow Q2 on the upper shown in Fig. 2
  • the heat dissipation via the heat flow Q2 via the upper part of the energy storage cell 1 shown in FIG. 2 is in many cases low, since, for example, in standardized cylindrical battery cells of the type 18650, 26650, etc., there are cavities contain air that is a good heat insulator. Also, the heat release in the radial direction over the heat flow Ql is limited, since many contact resistances between cathodes, anodes and separator layers of the rolled-up active material must be overcome, which complicate the thermal flow in the radial direction. Most of the heat output of the heat generated via the shown in Fig. 2
  • the intensity / amount of possible heat dissipation over the different heat flows Ql, Q2 and Q3 is indicated in the schematic diagram shown in Fig. 2 by the corresponding arrow strengths.
  • the illustrated cylindrical energy storage cell 1 in its circumferential surface or the shell ⁇ cup 3 has a circumferential indentation or groove. 4
  • the contacting device according to the invention can be used for contacting a cylindrical energy storage cell 1, such as she in Pig. 1, 2, are used with at least one printed circuit board, LP, which derives the electrical energy stored in the energy ⁇ memory cell 1 to a load or to a consumer.
  • a cylindrical energy storage cell 1 such as she in Pig. 1, 2
  • LP printed circuit board
  • Fig. 3 shows a first embodiment of the erfindungsge ⁇ MAESSEN contacting device for contacting a Ener ⁇ gie Eatzelle 1 with a printed circuit board 5, 6.
  • contacting of the electrical positive pole 2 of the energy storage cell 1 with a first printed circuit board 5 is carried out and a Kontak ⁇ tion of the negative terminal 3 of the energy storage cell 1 with a second printed circuit board 6 by means of two releasable mechanical clip connections 7, 7 '.
  • the upper printed circuit board 5 shown there has several
  • Layers namely a first layer 5a, which is formed by an aluminum core or an epoxy core, an electrically insulating insulating layer 5b and a
  • the electrically conductive or electrically conductive layer 5c which consists for example of copper or of another conductive material.
  • the first electrical, positive pole 2 of the energy storage cell 1 is pressed by the detachable mechanical connection 7 with a certain contact force F against the electrically conductive layer 5c of the printed circuit board 5 and fixed there.
  • the electrically conductive layer 5 c of the printed circuit board 5 is located on a front, the energy storage cell 1 facing side of the printed circuit board 5.
  • the releasable mechanical connection 7 is a mechanical clip connection 7, which has a clip 8. As shown in Fig.
  • the clip 8 has a clip hook 8a, which engages in the circumferential groove 4 of the energy storage cell 1 and engages there.
  • the clip hook 8a of the clip 8 is connected via a Klipphals 8b with a clip ⁇ head 8c.
  • the clip 8 of the detachable mechanical clip connection 7 is inserted through a hole 9 through the printed circuit board 5, wherein the clip head 8 c engages behind the printed circuit board 5 for fixing the clip 8.
  • the clip 8 of the releasable mechanical clip connection 7 presses the energy storage cell 1 with a certain predetermined contact force of, for example, 0.01 to 0.3 Newtons via a contacting disk 10 to the electrically conductive layer 5c of the upper printed circuit board 5.
  • the contacting disk 10 is preferably made an elastic material insbeson ⁇ particular of an elastic polymer material which is both electrically and thermally conductive.
  • a seal 11 located in the illustrated embodiment between the clip head 8c of the clip 8 of the releasable mechanical clip connection 7 and an edge of Boh ⁇ tion 9 of the printed circuit board 5, a seal 11, which incorporation of a fluid, in particular Moisture, from the outside towards the energy storage cell 1 prevented.
  • This seal 11 can be pressed in a possible embodiment, preferably by the emergence of an overpressure on one of the Energyspei ⁇ cherzelle 1 facing side of the printed circuit board 5 to the outside, so that a resulting on the part of the energy storage cell 1 overpressure is reduced.
  • the optionally provided in Fig. 3 seal 11 seals the energy storage system against liquid penetration. By creating an overpressure on an energy storage cell 1, a leak chendes gas optionally be discharged after pushing out the seal 11 through the bore 9 to the outside.
  • the second lower printed circuit board 6 likewise has three layers, namely via an electrically conductive layer 6c facing the energy storage cell 1, an insulating layer 6b and a carrier layer 6a made of aluminum or epoxy.
  • a seal or a sealing ring 13 may be provided between the clip head 8c ⁇ of the clip 8 of the releasable mechanical clip connection 7 ⁇ and an edge of the bore 9 1 of the printed circuit board 6, a seal or a sealing ring 13 may be provided.
  • FIG. 4 shows a further second embodiment variant of the inventive contacting device for contacting an energy storage cell 1.
  • the embodiment variant shown in FIG. 4 is similar to the first embodiment variant shown in FIG. 3, wherein additionally a mechanical pretensioning spring 14, 15 acts on the bores 9 , 9 'of the two printed circuit boards 5, 6 is provided.
  • the biasing springs 14, 15 each provide a certain biasing force.
  • the biasing springs 14, 15 may be, for example, a plate spring or a spring ring or the like.
  • the two bias springs 14, 15 make it possible to make the contact force independent of the manufacturing tolerances.
  • FIG. 5 shows a schematic view of a side of a printed circuit board 5 facing the energy storage cells 1.
  • five energy storage cells 1-1, 1-2, 1-3, 1-4, 1 are shown 5 on one side of a printed circuit board 5, for example on the upper printed circuit board 5 shown in FIGS. 3, 4.
  • the present in the respective energy storage cells 1-i circumferential groove 4-i is shown schematically as a ring.
  • the circumferential groove 4-i of an energy storage cell 1-i each engage a clip hooks 8a of three clips 8 a releasable mechanical connection 7, which are preferably evenly spaced and form a triangle or in pairs include an angular segment of 120 °.
  • FIG. 1 shows a schematic view of a side of a printed circuit board 5 facing the energy storage cells 1.
  • five energy storage cells 1-1, 1-2, 1-3, 1-4, 1 are shown 5 on one side of a printed circuit board 5, for example on the upper printed circuit board 5 shown in FIGS. 3, 4.
  • each energy storage cell 1-i is thus held by three mechanical clip connections 7 whose clip hooks 8a engage in the associated groove 4-i of the energy storage cell 1-i.
  • the clips 8 generate the necessary pressing force to press the energy storage cell 1 via the elastic Kunststofftechniksseheibe 10 to the circuit board 5.
  • the clip heads 8c of the clips 8 lie on the upper side or on the side of the printed circuit board 5 facing away from the energy storage cells 1-i on the layer 5a made of aluminum or epoxy resin.
  • the overlying clip heads 8c are connected via the clip bases 8b inserted through the holes 9 to the clip hooks 8a shown in FIG. 5, which engage or engage in the circumferential groove 4-i of the respective energy storage cell 1.
  • FIG. 6 shows a further third embodiment variant of the contacting device according to the invention for contacting an energy storage cell 1.
  • both the positive pole 2 and the negative pole 3 are contacted with a single printed circuit board 5.
  • the positive pole is contacted 2 on the underside of the printed circuit board 5 and the contacting of the negative pole 3 of the energy storage cell 1 on the upper ⁇ side of the printed circuit board 5.
  • the positive terminal 2 of the energy storage cell 1 is the contacting disc 10 to the electrically conductive layer 5c of the printed circuit board 5, which consists for example of copper, with a certain contact pressure, the releasable mechanical connection 7 pressed.
  • the leadframe 5 has an additional two-th insulating layer 5d and a further electrically conductive layer 5e, which is located on the side away from the energy storage cell 1 side of the printed circuit board 5.
  • the mechanically detachable connection 7 has one or more clips 8, which consists of an electrically conductive material.
  • the clip 8 has a clip hook 8a, which engages in the circumferential groove 4 of the energy storage cell 1 and engages there.
  • the clip hook 8a is connected via a clip 8b of the electrically conductive clip 8 to an electrically conductive clip head 8c of the clip 8.
  • the Klipphals 8b of the electrically conductive clip 8 is located above a
  • the clip head is 8c of the electroconducting ⁇ ELIGIBLE clips 8 by means of electrically conductive contact washers 17a, 17b or by means of a contact wheel ring on the electrically conductive copper layer 5e of the printed circuit board 5 on.
  • the electrically conductive clip 8 provides an electrical connection between the jacket surface 3 of the energy storage cell 1 and the electrically conductive layer 5e, which is located on the top side or on the side of the printed circuit board 5 facing away from the energy storage cell 1. ago.
  • a spring element or a biasing spring 14 may be provided between the clip head 8c and the edge of the bore 9, as shown in Fig. 6.
  • the energy storage cell 1 is mounted with its plus and minus pole on a printed circuit board 5 and electrically contacted with it.
  • the steel cup, which forms the negative terminal 3 of the energy storage cell 1 is pressed on an electrically conductive, resilient contact plate 16, which consists for example of a conductive Po ⁇ lymer of the clip 8 and then through the electrically conductive clip 8 with the top of ⁇ conductor board 5 in turn with an electrically conductive contact - electrically contacted disc 17a 17b.
  • the Darge ⁇ presented in Fig. 6 third exemplary guide variant offers the particular Before ⁇ part, that the lower part of the energy storage cell 1, ie the cup 3, for cooling is exposed and can be immersed for example in egg ⁇ NEN cooling medium container.
  • Another advantage of the embodiment shown in FIG. 6 is that only a single printed circuit board 5 for the disposal of the data stored in the energy storage cell 1 electrical see power is necessary and thus the number of conductors ⁇ boards can be reduced in an energy storage system.
  • a further advantage of the embodiment variant shown in FIG. 6 is that the assembly or the bring the energy storage cell 1 to the circuit board 5 can be done in a particularly simple and time-saving manner.
  • Another advantage of the in Fig. 6 shown third from ⁇ guide ersion is that the two different loan poles 2, 3 of the energy storage cell 1 with electrically conductive layers 5c are connected 5e to un ⁇ ter Kunststoff sides of the circuit board 5 to reduce the risk of short circuits.
  • FIG. 7 shows a further, fourth embodiment of he ⁇ inventive contacting device for contacting an energy storage cell 1.
  • fourth embodiment also 3 of the energy storage cell 1 with a takes place PLEASE CONTACT ⁇ tion of the plus and the minus pole 2, single printed circuit board 5, wherein, however, in contrast to the embodiment shown in FIG. 6, the contacting of both the positive pole 2 and the negative pole 3 of the energy storage cell 1 on the energy storage cell 1 facing side of the printed circuit board 5.
  • the clip connection 7 it is not necessary for the clip connection 7 to be electrically conductive, since the clip connection 7 only supplies a contact pressure.
  • the steel cup 3, which forms the negative terminal of the energy storage cell 1 is contacted in the variant embodiment shown in FIG. 7 via an electrically conductive contact disk 18 with a further electrical layer 5c 'which is separated from the first electrically conductive layer 5c by an insulation 19a the printed circuit board 5 is electrically isolated.
  • the positive pole 2 of the energy storage cell 1 is connected to the electrically conductive layer 5c of the printed circuit board 5 by an elastic, electrically conductive contacting disk 10 as in the other embodiments and is mechanically pressed against the printed circuit board 5 by the clip connection 7 with a predetermined contact force ,
  • a spring element 14 may also be provided to provide a biasing force. It may be a plate spring or a spring ring.
  • the fourth embodiment variant shown in FIG. 7 likewise has the advantage that the lower part of the energy storage cell 1 is exposed for cooling and only one printed circuit board 5 is required to dissipate the electrical energy stored in the energy storage cell 1.
  • the embodiment shown in Fig. 7 has compared to the embodiment shown in Fig. 6 embodiment the advantage that the clip seal bond does not have to be 7 are made of an electrically conductive material ⁇ and thus can be manufactured from an inexpensive plastic.
  • the printed circuit board 5 has only one side, which is coated with electrically conductive layers 5c, 5c '. This can increase the safety during assembly or assembly.
  • the releasable mechanical clip connection 7 is formed by SMD clips 8, which are located on a front, the Energyspei ⁇ cherzelle 1 facing side of the printed circuit board 5.
  • the releasable mechanical Clip connection 7 as SMD (Service Mounted Device) executed.
  • the detachable mechanical connection 7, in particular the detachable mechanical clip connection 7, can be connected to the printed circuit board 5 via a soldering, welding or screw connection.
  • the clip 8 or the releasable mechanical clip connection 7 is no longer inserted through the printed circuit board, but soldered or soldered to one or with a layer of the printed circuit board.
  • the SMD clip 8 shows a fifth embodiment variant of the contacting device according to the invention with an SMD (Service Mounted Device) clip 8 with a clip hook 8a, which engages in the circumferential groove 4 of the energy storage cell 1.
  • the SMD clip 8 engages with its clip hook 8a in the outer groove 4 of the energy storage cell 1 and thus generates a defined contact force F.
  • the clip 8 on the electrically conductive layer 5c for example made of copper, attached, for example, soldered to the electrically conductive layer 5c.
  • the SMD clip 8 may for example consist of a non-metallic material which is mounted on a metallic support of the SMD clip 8, which in turn is soldered onto the electrically conductive layer 5c of the printed circuit board 5.
  • the contacting of the negative pole 3 can take place via a second printed circuit board (not shown).
  • FIG. 9 shows a further sixth embodiment variant of the contacting device according to the invention, in which the SMD clips 8 of the detachable mechanical clip connection 7 are connected to the positive connection. pole 2 of the energy storage cell 1 intervene.
  • the positive terminal 2 of the energy storage cell 1 has production-related holes, can engage in each of which a clip ⁇ hook 8a of a SMD-clips. 8 In this way, a necessary contact force F can be generated.
  • the SMD clip 8 consists of a metallic, electrically conductive material.
  • the metallic SMD clip 8 is soldered or soldered onto the copper layer 5c of the printed circuit board 5.
  • FIG. 9 shows a further sixth embodiment variant of the contacting device according to the invention, in which the SMD clips 8 of the detachable mechanical clip connection 7 are connected to the positive connection. pole 2 of the energy storage cell 1 intervene.
  • the SMD clip 8 consists of a metallic, electrically conductive material.
  • the metallic SMD clip 8 is soldered or soldered onto the copper layer 5c
  • FIG. 10 shows a further seventh embodiment variant of the contacting device according to the invention.
  • the SMD clips 8 engage in an outer groove 4 of the energy storage cell 1.
  • Both the positive pole 2 and the negative pole 3 are contacted by means of the SMD clips 8 with a single printed circuit board 5.
  • the detachable mechanical connection 7 thus has at least two SMD clips 8, 8 ', each comprising an electrically conductive component and contacting the positive pole 2 and the negative pole 3 of the energy storage cell 1.
  • the releasable mechanical connection 7 has an inner clip 8 'for the positive pole 2 and an outer clip 8 for the minus ⁇ pin 3 of the energy storage cell 1. Between the two
  • FIG. 11 shows a further eighth embodiment variant of the contacting device according to the invention.
  • an SMD clip 8 also engages in the outer groove 4 of the energy storage cell 1.
  • Both the positive pole 2 and the negative pole 3 of the energy storage cell 1 are contacted with SMD clips 8, 8, which each comprise an electrically conductive component, with a printed circuit board 5. Between the two electrically conductive components is re ⁇ around an electrically insulating layer and an electrically insulating member 19b.
  • FIG. 12 schematically shows an embodiment of an energy storage system 20, which may include a plurality of energy storage cells 1-i.
  • an energy storage system 20 which may include a plurality of energy storage cells 1-i.
  • four energy storage cells 1-1, 1-2, 1-3, 1-4 via contacting devices according to the invention are provided with a printed circuit board 5 for deriving the electrical energy stored in the energy storage cells 1-i Energy connected in a discharge process.
  • the energy storage cells 1-i can also be in a charging process be charged via the circuit board 5.
  • all energy storage cells li are connected to a single printed circuit board 5, that is, both the positive terminal 2-i and the negative terminal 3-i of the respective energy storage cell li with an electrically conductive layer of the Ableiterplatine 5 electrically verbun ⁇ the.
  • the third embodiment variant shown in FIG. 6 or the fourth embodiment variant of the contacting apparatus shown in FIG. 7 can be used for this purpose.
  • the positive terminals 2-i of the electric Speicherzel ⁇ len li are connected via the printed circuit board 5 with a positive Abgriffpol 21 of the energy storage system twentieth
  • the Mi ⁇ nuspole 3-i of the energy storage cells li are about
  • the energy storage cells 11 are immersed in a cooling medium container 24 filled with a liquid cooling medium, which is filled, for example, with cooling water.
  • This cooling medium container 24 has an inlet valve 25 and an outlet valve 26, via which it is connected to a cooling circuit.
  • the Energy storage cells li are inductive elements via the contacting devices or to An electrically connected to the printed circuit board 5. Both the positive poles 2-i and the negative poles 3-i of the energy storage cells 1i are contacted via the printed circuit board 5.
  • the printed circuit board 5 has a corresponding layout, which offers the desired interconnection of the energy storage cells 1 to the negative Abgriffpol 22 and to the positive Abgriffpol 21 of the energy storage system 20.
  • connection elements provide the necessary contact pressure in order to press the energy storage cell 1 against the printed circuit board 5 and fix it there.
  • the lower parts of the housing of the energy storage cells li are preferably each surrounded by an electrical insulation 35- i to avoid short circuits. This is necessary, above all, when the energy storage cells are connected in series, since different electrical potentials then occur between the serially connected energy storage cells 11 1.
  • the sheathed energy storage cells 1i are located in the cooling medium container 24, which is acted upon with cooling medium, and which transfers the heat of the heat released via the sheath 3-i and the cell bottom of the energy storage cells 1i
  • Energy storage cell li receives.
  • an external cooling circuit with the inlet and outlet valves 25, 26, the heat sink 28 and the pump 27 may be provided.
  • the temperature T of the cooling medium is measured and controlled by activation of the cooling pump 27 to an optimum operating temperature.
  • the embodiment variant shown in FIG. 12 permits a particularly effective cooling of the multiplicity of energy storage cells 11, so that energy storage cells with a particularly high power density can be used.
  • FIG. 13 shows a further embodiment variant of the energy storage system 20 according to the invention, in which as cooling medium is used to air.
  • a housing 30 of the energy storage system 20 are louvers, namely air inlets 31 and air outlets 32.
  • the lateral surfaces 3-i of the Ener ⁇ gie Eatzellen 1-i and their floors are flowed with air or flows around, so that waste heat can be efficiently dissipated can.
  • the energy storage system 20 is designed to be open, ie, air can be supplied from the environment.
  • the energy storage cells 1-i are enclosed in holders 33, 34 provided for this, which hold the energy storage cells 1-i.
  • Both the positive pole 2-i and the negative pole 3-i are electrically connected to the printed circuit board 5 via a contact device according to the invention and electrically connected to the load 23 via the upper part of the energy storage cells 1-i.
  • the consumer 23 may be, for example, an electric motor or the like.
  • the energy storage system 20 according to the invention as exemplified in FIGS . 12, 13, can be used in many ways, for example in an electric vehicle for driving an electric motor.
  • the electric vehicle may be, for example, an electric car or an electric bicycle.
  • the energy storage system 20 of the invention can be used efficiently for more on ⁇ applications, such as agricultural machinery, lawn mower or for energy storage in private - households.
  • the energy storage system 20 may be used for an uninterruptible power supply, for example within a hospital.
  • Another possible application of the energy storage system 20 according to the invention is the storage of electrical energy, the generated by a wind turbine or a solar power system.
  • the energy storage system 20 according to the invention uses multifunctional printed circuit boards, which combine electrical, thermal and static or mechanical functions.

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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)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Dispositif de contact pour la mise en contact d'une cellule d'accumulation d'énergie (1) avec au moins une carte de circuit imprimé (5) prévue pour dériver l'énergie électrique accumulée dans la cellule d'accumulation d'énergie (1). Au moins un pôle électrique de la cellule d'accumulation d'énergie (1) est pressé par une liaison (7) mécaniquement libérable avec une force de pression déterminée contre une couche électroconductrice (5c) de la au moins une carte de circuit imprimé (5) qui se trouve sur une face avant, orientée vers la cellule d'accumulation d'énergie (1), de ladite carte de circuit imprimé (5).
EP15730503.8A 2014-06-25 2015-06-22 Dispositif de contact pour la mise en contact d'une cellule d'accumulation d'énergie Withdrawn EP3161884A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014212143.4A DE102014212143A1 (de) 2014-06-25 2014-06-25 Kontaktierungsvorrichtung zur Kontaktierung einer Energiespeicherzelle
PCT/EP2015/063956 WO2015197545A2 (fr) 2014-06-25 2015-06-22 Dispositif de contact pour la mise en contact d'une cellule d'accumulation d'énergie

Publications (1)

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EP3161884A2 true EP3161884A2 (fr) 2017-05-03

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EP15730503.8A Withdrawn EP3161884A2 (fr) 2014-06-25 2015-06-22 Dispositif de contact pour la mise en contact d'une cellule d'accumulation d'énergie

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Country Link
US (1) US10340487B2 (fr)
EP (1) EP3161884A2 (fr)
DE (1) DE102014212143A1 (fr)
WO (1) WO2015197545A2 (fr)

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DE102014212143A1 (de) 2014-06-25 2015-12-31 Technische Universität München Kontaktierungsvorrichtung zur Kontaktierung einer Energiespeicherzelle
DE102016103667A1 (de) * 2016-03-01 2017-09-07 Unicorn Energy GmbH Batteriepack und Verfahren zur Herstellung eines Batteriepacks
DE102016218272A1 (de) 2016-09-22 2018-03-22 Robert Bosch Gmbh Batteriemodul mit wärmeableitenden, elektrischen Kontakten und Schnellladeverfahren für das Batteriemodul
DE102016219302A1 (de) * 2016-10-05 2018-04-05 Continental Automotive Gmbh Energiezellenhaltevorrichtung für ein Kraftfahrzeug
KR102184368B1 (ko) * 2017-12-11 2020-11-30 삼성에스디아이 주식회사 배터리 팩
DE102018102005A1 (de) 2018-01-30 2019-08-01 Jungheinrich Aktiengesellschaft Kontaktierungsvorrichtung für mit elektrischen Polen ausgestattete Energiespeicherzellen mit einer Leiterplatte
AT521379B1 (de) * 2018-11-19 2020-01-15 Raiffeisenlandesbank Oberoesterreich Ag Kontaktierungsvorrichtung
DE102022106699A1 (de) 2022-03-22 2023-09-28 Bayerische Motoren Werke Aktiengesellschaft Elektrochemischer Energiespeicher, Fortbewegungsmittel, Herstellungsverfahren und Vorrichtung zur Halterung einer Vielzahl elektrochemischer Zellen

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Also Published As

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DE102014212143A1 (de) 2015-12-31
WO2015197545A2 (fr) 2015-12-30
US20170207431A1 (en) 2017-07-20
US10340487B2 (en) 2019-07-02
WO2015197545A3 (fr) 2016-03-17

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