WO2024251447A1 - Dispositif de stockage d'énergie électrique pour un véhicule à moteur, en particulier pour une automobile, et véhicule à moteur - Google Patents

Dispositif de stockage d'énergie électrique pour un véhicule à moteur, en particulier pour une automobile, et véhicule à moteur Download PDF

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Publication number
WO2024251447A1
WO2024251447A1 PCT/EP2024/062495 EP2024062495W WO2024251447A1 WO 2024251447 A1 WO2024251447 A1 WO 2024251447A1 EP 2024062495 W EP2024062495 W EP 2024062495W WO 2024251447 A1 WO2024251447 A1 WO 2024251447A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuse
assigned
foam
electrical energy
connecting element
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
Application number
PCT/EP2024/062495
Other languages
German (de)
English (en)
Inventor
Alexander Krohmer
Sascha Zimmermann
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 AG filed Critical Bayerische Motoren Werke AG
Priority to CN202480017693.7A priority Critical patent/CN120898324A/zh
Publication of WO2024251447A1 publication Critical patent/WO2024251447A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • 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

  • Electrical energy storage device for a motor vehicle, in particular for a motor vehicle, and motor vehicle
  • the invention relates to an electrical energy storage device for a motor vehicle, in particular for a motor vehicle, according to the preamble of patent claim 1. Furthermore, the invention relates to a motor vehicle with at least one such electrical energy storage device.
  • DE 10 2021 112 889 A1 discloses a cell connector for connecting cell terminals. At least one connecting element made of an electrically conductive material is provided, which has two connection areas and a fuse area arranged between the connection areas, which has an area with a reduced cross-section and is thus designed in particular as a fuse.
  • the object of the present invention is to provide an electrical energy storage device for a motor vehicle and a motor vehicle with at least one such electrical energy storage device, so that particularly safe operation can be realized.
  • a first aspect of the invention relates to an electrical energy storage device, also referred to simply as an energy storage device, for a motor vehicle, also referred to simply as a vehicle.
  • the motor vehicle preferably designed as a motor vehicle, in particular as a passenger car, in its fully manufactured state has the electrical energy storage device, by means of or in which electrical energy is to be stored, in particular electrochemically.
  • the electrical energy storage device is preferably a high-voltage component, the electrical voltage of which, in particular electrical operating or nominal voltage, preferably greater than 50 volts, in particular greater than 60 volts, and most preferably amounts to several hundred volts.
  • the electrical energy storage device is also referred to as a battery and is in particular a secondary battery, whereby, in particular when the electrical energy storage device is a high-voltage component, the electrical energy storage device is also referred to as a high-voltage battery (HV battery).
  • HV battery high-voltage battery
  • the electrical energy storage device has a storage housing which delimits a receiving space, in particular directly.
  • the receiving space is delimited, in particular directly, by an inner peripheral surface of the storage housing.
  • the electrical energy storage device also has a plurality of storage cells arranged in the receiving space and thus in the storage housing, by means of or in which the aforementioned electrical energy is to be stored or is stored, in particular electrochemically.
  • the storage cells are also simply referred to as cells and are cells formed separately from one another and separately from the storage housing, which are also referred to as individual cells.
  • the respective storage cell has a respective cell housing and at least one respective connection element, which is also referred to as a terminal.
  • the respective connection element is also referred to as the respective first connection element.
  • the respective connection element has at least or exactly two connection elements, also referred to as terminals, namely the aforementioned first connection element and a second connection element.
  • the respective storage cell can provide the electrical energy stored by the respective storage cell via the respective connection element.
  • electrical energy which is provided or can be provided by an electrical machine of the motor vehicle, for example, can be supplied to the respective storage cell via the respective connection element and stored in the respective storage cell, thus stored in the respective storage cell.
  • the electrical energy storage device also has a connecting device arranged in the receiving space, which is designed in particular separately from the storage housing and separately from the storage cells and thus separately from the connection elements.
  • a respective connecting element of the connecting device is assigned to the respective connection element.
  • the connecting device is also referred to as a cell contacting system, cell contacting system or ZKS.
  • the respective connection element is on a respective side of the respective cell housing of the respective storage cell, wherein it is particularly conceivable that the respective connection element protrudes from the respective cell housing of the respective storage cell, in particular along or in an extension direction, so that, for example, the respective connection element is raised relative to the respective cell housing, thus relative to respective partial regions of the respective cell housing which in particular directly adjoin the respective connection element.
  • the respective connecting element of the connecting device assigned to the respective connection element is electrically and preferably also mechanically connected to the respective connection element to which the respective connecting element is assigned. Since the respective connecting element assigned to the respective connection element is assigned to the respective connection element, conversely the respective connection element to which the respective connecting element is assigned is assigned to the respective connecting element that is assigned to the respective connection element. Because the respective connecting element is electrically connected to the respective assigned connection element, the connection elements and thus the storage cells are electrically connected to one another via the connecting device, whereby, for example, the storage cells or the connection elements are connected in series or in parallel to one another.
  • the respective connecting element is electrically and preferably also mechanically connected to the respective assigned connection element in such a way that the respective connecting element is integrally connected to the respective assigned connection element.
  • the respective connecting element is welded to the respective assigned connection element, in particular by laser welding.
  • the respective connecting element assigned to the respective connection element has a respective fuse. Since the respective connecting element is assigned to the respective connection element, and since the respective connecting element assigned to the respective connection element has the respective fuse, the respective fuse of the respective connecting element assigned to the respective connection element is assigned to the respective connection element to which the respective connecting element is assigned and vice versa.
  • the respective fuse is a respective fuse area of the respective connecting element.
  • the respective fuse is, for example, provided by a In particular, local cross-sectional tapering or cross-sectional reduction of the respective connecting element is formed, so that, for example, the respective fuse of the respective connecting element has a smaller cross-section than partial areas of the respective connecting element that are directly adjacent to the respective fuse of the respective connecting element on both sides.
  • the respective connecting element and thus the respective fuse and the respective partial areas of the respective connecting element are formed from an electrically conductive and, for example, metallic material such as copper or aluminum.
  • the connecting element that is assigned to the connection element of the one storage cell that has the thermal event heats up to such an extent that the fuse of the connecting element that is assigned to the connection element of the one storage cell melts and thus fails. This is also referred to as the fuse being triggered. In other words, the fuse of the connecting element that is assigned to the connection element of the one storage cell on or in which the thermal event occurred is triggered.
  • one storage cell By triggering the fuse, one storage cell is electrically or galvanically separated from the other remaining storage cells, so that, for example, the thermal event of one storage cell can be prevented from spreading to the other storage cells and thus so-called thermal propagation can be avoided.
  • the aforementioned limit value can be designed, i.e. defined, for example, by structural design of the respective fuse, particularly with regard to the material from which the respective connecting element is made and/or the respective cross-section of the respective fuse.
  • a Storage housing foam formed separately from the storage cells and separately from the connecting device is arranged, which is in particular designed as a structural foam.
  • the foam is also referred to as the first foam.
  • the first foam is a polyurethane foam (PU foam).
  • the storage cells are connected to one another and/or to the storage housing by means of the foam, in particular glued.
  • the storage housing can have at least or exactly two housing parts formed separately from one another and connected to one another.
  • a first of the housing parts is, for example, an upper housing part, with a second of the housing parts being, for example, a lower housing part. It is conceivable that in the installation position of the electrical energy storage device, the housing parts follow one another in the vertical direction of the motor vehicle and are thus arranged one above the other, with the electrical energy storage device assuming its installation position in the fully manufactured state of the motor vehicle having the electrical energy storage device. It is conceivable that the housing parts are connected to one another by means of the foam, in particular glued to one another. This is done, for example, in such a way that the foam rests on both housing parts, in particular directly in each case.
  • the foam rests on the respective cell housing, in particular on a respective outer peripheral surface of the cell housing, in particular directly, whereby, for example, the cell housings and thus the storage cells are connected to one another by means of the foam, in particular glued to one another. It is also conceivable that the foam rests, in particular directly, on the storage housing and, in particular directly, on the respective cell housing, in particular on the respective outer peripheral surface of the respective cell housing, whereby, for example, the respective storage cell is connected to the storage housing, in particular glued to one another.
  • the foam can be used to avoid undesirable, excessive relative movements between the storage cells and/or between the respective storage cell and the storage housing.
  • the foam can be used to transfer loads such as forces particularly advantageously between the storage cells and/or between the respective storage cell and the storage housing and/or between the housing parts, whereby a particularly high level of robustness and thus a particularly high level of safety of the electrical energy storage device can be achieved.
  • the respective fuse is provided with a respective, separate from the storage cells, separate from the connecting device and a thermal insulation element is assigned which is formed separately from the storage housing and, for example, also separately from the foam, by means of which the respective fuse to which the respective insulation element is assigned is thermally insulated from the foam.
  • the respective insulation element has a lower thermal conductivity and/or a lower thermal capacity than the foam, so that conversely the foam has a higher thermal conductivity and/or a higher thermal capacity than the respective insulation element.
  • the respective insulation element has a respective first thermal conductivity and/or a respective first thermal capacity
  • the foam (first foam) has a respective second thermal conductivity and/or a respective second thermal capacity.
  • the second thermal conductivity is greater than the first thermal conductivity.
  • the second thermal capacity is greater than the first thermal capacity.
  • the respective first thermal conductivity is less than the second thermal conductivity.
  • the respective first thermal capacity is less than the second thermal capacity.
  • the first thermal conductivities and/or the first thermal capacities of the insulation elements are the same.
  • the respective insulation element is formed from a respective first material, wherein, for example, the foam is formed from a second material that is different from the first material.
  • the first materials are the same material.
  • the thermal insulation of the respective fuse can prevent excessive, undesirable heat dissipation from the respective fuse. In other words, if the insulation elements were not used, so that, for example, the first foam would lie directly against the respective fuse, excessive heat dissipation could occur from the respective fuse into the foam.
  • the foam can have particularly advantageous mechanical properties, but these are accompanied by an undesirably high thermal conductivity and/or an undesirably high thermal capacity of the foam, so that an excessive amount of heat would be dissipated from the respective fuse via the foam if the respective fuse were not thermally insulated from or against the foam by means of the respective insulation element.
  • the invention now makes it possible, on the one hand, to use the foam to create an advantageously high, in particular mechanical, robustness of the energy storage device.
  • the insulation elements excessive heat dissipation from the respective fuse can be avoided, since the respective insulation element respective fuse is advantageously thermally insulated from the foam.
  • an exothermic reaction can occur in the respective storage cell, also referred to as a battery cell.
  • Conditions can arise in which the respective storage cell is no longer designed or functions as a voltage source, but changes into a conductor with a defined electrical resistance, thus changing from a voltage source to a conductor with a defined resistance.
  • at least one of the effects is or includes a thermal event. If the storage cells are connected in a P-connection, thus connected in parallel to one another, an electrical discharge of the other, remaining and still intact storage cells in this P-connection can occur via the storage cell that is now conductive, thus designed as a conductor with a defined resistance.
  • the insulation elements provided according to the invention are therefore a countermeasure to avoid thermal propagation or at least to delay it in a timely manner.
  • a medium-resistance failure of one of the storage cells occurs, it is usually not sufficient to trigger the respective fuse assigned to a storage cell purely by an electrical current resulting from the medium-resistance failure, since an electrical current occurring in the event of such a medium-resistance failure, also referred to as a fault current, which flows through the connection element of the one storage cell exhibiting the medium-resistance failure, can be in the range of an electrical operating current that can occur during normal operation of the energy storage device, in the normal operation of which no medium-resistance failure of a storage cell occurs.
  • a temperature-related, i.e. temperature-triggered tripping of the fuse of the connecting element assigned to one of the memory cells is also advantageous, so that the fuse is triggered by a combination of a high temperature of the fuse resulting from the medium-resistance failure and a high temperature of the fuse resulting from the medium-resistance failure.
  • a further background is in particular that in the event of a defect such as a medium-resistance failure of the respective storage cell, for example or possibly only a small electrical fault current flows through the respective fuse of the respective connecting element and is not sufficient on its own to melt the fuse, i.e. to trigger it, but in particular the fuse also heats up, so that the temperature of the fuse increases, whereby this heating and thus this temperature increase is not caused or not only caused by the fault current, but also, in particular, by another heating effect such as conduction, and whereby this other heating effect results from the defect mentioned and/or from a thermal event in the respective storage cell caused by the defect or associated with the defect.
  • the fault current i.e. heating of the fuse caused by the fault current, in combination with the other heating effect, now leads to melting and thus to the fuse being triggered.
  • the connecting device and/or the storage cells are embedded in the foam, which, as previously described, can ensure advantageous structural robustness of the energy storage device, but has an excessively high thermal conductivity and/or an excessively high thermal capacity.
  • excessive, undesirable heat dissipation could occur from the fuse of the connecting element assigned to one of the storage cells, so that one of the storage cells is defective, but the fuse of the connecting element assigned to one of the storage cells does not melt.
  • the invention now makes it possible for the respective storage cell to melt and thus trigger the respective fuse of the respective connecting element, which is assigned to the respective connection element of the respective storage cell, even in the event of a low-resistance or medium-resistance failure, since the respective fuse is thermally insulated from or against the foam by means of the respective insulation element, a medium-resistance failure of the respective storage cell results in such an advantageous combination of fault current flowing through the fuse and heating of the fuse that the fuse melts due to this combination and thus fails and is therefore triggered.
  • the respective storage cell is advantageously separated from the other, remaining and still intact ones even in the event of a medium-resistance failure. Storage cells are separated.
  • the respective fuse is thermally insulated from the foam by means of the respective insulation element, the combination of fault current and heating of the respective fuse is sufficient to trigger the respective fuse, thus causing it to melt and thus fail, whereby the respective storage cell is separated from the other, remaining and still intact storage cells.
  • the respective insulation element is designed as a respective insulation cushion, which is also referred to as a pad or insulation pad.
  • the respective insulation element is pressed onto the respective fuse to which the respective insulation element is assigned and/or the respective insulation element surrounds or encloses the respective fuse to which the respective insulation element is assigned on at least or exactly two different sides of the respective fuse that face away from one another.
  • the respective insulation element is formed from a second foam that is different from the first foam.
  • the second foam is preferably the aforementioned first material.
  • the second foam is a polyethylene foam (PE foam).
  • the second foam is a closed-cell foam, so that, for example, the respective insulation element is designed as a closed-cell foam pad.
  • the first foam and the second foam have different porosities, in particular such that, for example, the second foam is less porous than the first foam.
  • the first foam is porous, with the second foam being porous, for example, but less porous than the first foam.
  • the insulation elements prefferably be formed integrally with one another, thus being formed from a single piece, so that, for example, the insulation elements are formed by a one-piece monoblock, thus formed from a single piece and thus manufactured integrally. Furthermore, it would be conceivable that the insulation elements are formed separately from one another and connected to one another.
  • the insulation elements are designed separately from one another and are not directly connected to one another. This ensures particularly advantageous thermal insulation of the respective fuse, particularly with respect to the foam.
  • the respective connection element is at least partially, in particular at least predominantly and thus at least more than half or completely, covered on its respective side pointing away from the respective cell housing and facing the foam by the insulation element assigned to the respective fuse of the connecting element assigned to the respective connection element, in particular in such a way that the respective insulation element lies directly against the respective connection element.
  • a further embodiment is characterized in that the respective fuse is completely covered by the insulation element assigned to the respective fuse on its respective side facing away from the respective connection element to which the respective fuse is assigned and facing the foam.
  • the respective insulation element lies directly on the respective fuse to which the respective insulation element is assigned.
  • the respective insulation element extends beyond the respective fuse to which the respective insulation element is assigned and thus also lies directly against the respective wall areas of the respective connecting element that adjoin the respective fuse of the respective connecting element on both sides. This reliably prevents excessive heat dissipation from the respective fuse. This means that particularly advantageous thermal insulation of the respective storage cell can be achieved.
  • the wall areas are the previously mentioned sub-areas of the respective connecting element.
  • At least one of the respective wall regions of the respective connecting element have a respective first side pointing away from the respective connection element to which the respective connecting element is assigned and facing the foam, and a second side pointing away from the first side and directly adjoining the first side, wherein the respective insulation element which is assigned to the respective connecting element or the respective fuse of the respective connecting element lies directly on both the first side and the second side.
  • the respective connecting element can be surrounded, enclosed or encompassed particularly extensively by the respective insulation element, so that a particularly advantageous thermal insulation of the respective fuse of the respective connecting element can be achieved.
  • a second aspect of the invention relates to a motor vehicle, also referred to simply as a vehicle, which is preferably designed as a motor vehicle, in particular as a passenger car, and has at least one electrical energy storage device according to the first aspect of the invention.
  • Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention and vice versa.
  • Fig. 1 shows a schematic and sectional side view of an electrical energy storage device of a motor vehicle
  • Fig. 2 shows a schematic and sectional top view of the electrical energy storage device.
  • Fig. 1 shows a detail in a schematic and sectional side view of an electrical energy storage device 1 for a motor vehicle, also simply referred to as a vehicle.
  • the electrical energy storage device 1 has a storage housing 2, shown in detail and particularly schematically in Fig. 1, through which a receiving space 3 is delimited, in particular directly.
  • a plurality of storage cells 4 of the electrical energy storage device 1 are arranged in the receiving space 3, wherein electrical energy, in particular electrochemically, is to be stored or is stored by means of the storage cells 4.
  • the respective storage cell 4 has a respective cell housing 5 and at least one respective connection element 6, also referred to as a terminal. It can be seen from Fig. 1 that in the embodiment shown in Fig.
  • the respective connection element 6 is arranged on a respective side S of the respective cell housing 5 and protrudes from the cell housing 5 along an extension direction.
  • the extension direction is illustrated in Fig. 1 by a double arrow 7.
  • the respective storage cell 4 can provide the respective electrical energy stored in the respective storage cell 4 via the respective connection element 6.
  • electrical energy that can be provided or is provided, for example, by an electrical machine of the motor vehicle can be supplied to the respective storage cell 4 via the respective connection element 6 and thus stored in the storage cell 4, and therefore stored in the respective storage cell 4.
  • the motor vehicle can be driven by means of the electrical machine, in particular purely electrically. If, for example, the storage cells 4 provide the electrical energy via their connection elements 6, the electrical machine can be supplied with the electrical energy provided, whereby the electrical machine can be operated in motor mode and thus as an electric motor.
  • the motor vehicle can be driven, in particular purely electrically, by means of the electric motor.
  • the electric machine is preferably a high-voltage component whose electrical voltage, in particular electrical operating or nominal voltage, is preferably greater than 50 volts, in particular greater than 60 volts, and very preferably amounts to several hundred volts.
  • the energy storage device 1 also has a connection device 8 arranged in the receiving space 3, which is designed separately from the storage cells 4 and separately from the storage housing 2 and is also referred to as a cell contacting system, cell contacting system or ZKS.
  • a respective connection element 9 of the connection device 8 is assigned to the respective connection element 6, wherein the respective connection element 9 is also referred to as a cell connector.
  • connection element 9 assigned to the respective connection element 6 is electrically and preferably also mechanically connected to the respective connection element 6 to which the respective connection element 9 is assigned, whereby the connection elements 6 are electrically connected to one another via the connection device 8.
  • the storage cells 4 are electrically connected to one another via the connection device 8, whereby, for example, the storage cells 4 are connected in series or in parallel to one another.
  • the storage cells 4 form, for example, a connection which, in particular when the storage cells 4 are connected in parallel to one another, is designed as a P-connection or is also referred to as a P-connection.
  • a first foam 10 is arranged in the receiving space 3, which is designed, for example, as a polyurethane foam.
  • the storage cells 4, in particular the cell housings 5, are connected to one another, in particular glued to one another, by means of the first foam 10.
  • the foam 10, for example lies, in particular directly, on a respective outer peripheral surface 11 of the respective storage housing 5.
  • the respective storage cell 4 is designed as a respective round cell, which is cylindrical on the outer peripheral side. This means that the outer peripheral surface 11 is cylindrical on the outer peripheral side, in particular at least in a predominant partial area.
  • the respective storage cell 4, in particular the respective cell housing 5, is connected, in particular glued, to the storage housing 2 by means of the foam 10.
  • the foam 10 in particular in the liquid state of the foam 10, is introduced into the receiving space 3.
  • the foam 10 can foam up during and/or after it is introduced into the receiving space 3 and thereby connect the cell housings 5 to one another and/or connect the respective cell housing 5 to the storage housing 2.
  • the respective connecting element 9 has a respective fuse 12.
  • one of the storage cells 4 malfunctions, the malfunction being or comprising, for example, a thermal event in one of the storage cells 4, then such a high electrical current flows through the connecting element 9 assigned to one of the storage cells 4 and thus through the fuse 12 of the connecting element 9 assigned to one of the storage cells 4 that the fuse 12 melts and thus fails and is thus triggered.
  • one of the storage cells 4 is separated from the other, remaining and still intact storage cells 4, in particular electrically or galvanically, so that, for example, a spread of the thermal event from one of the storage cells 4 to the other, still intact storage cells 4 and thus thermal propagation can be avoided.
  • the respective fuse 12 is assigned a respective insulation element 13 which is formed separately from the storage cells 4, separately from the connecting device 8 and separately from the storage housing 2 and by means of which the respective fuse 12 is thermally insulated from the first foam 10.
  • the respective insulation element 13 has a lower thermal conductivity and/or a lower thermal capacity than the first foam 10, which therefore has a higher thermal conductivity and/or a higher thermal capacity than the respective insulation element 13.
  • the respective insulation element 13 is formed from a second foam that is different from the first foam 10, so that the respective insulation element 13 is designed as a foam pad, also referred to as a foam cushion.
  • the second foam is, for example, a polyethylene foam (PE foam).
  • PE foam polyethylene foam
  • the insulation elements 13 are formed separately from one another and are not directly connected to one another.
  • the respective fuse 12 is on its respective side facing away from the respective connection element e, to which the respective connecting element having the respective fuse 12 is assigned, and facing the foam 10. Side S2 is completely covered by the respective insulation element 13 assigned to the respective fuse 12.
  • the respective insulation element 13 rests directly on the respective fuse 12 to which the respective insulation element 13 is assigned.
  • the respective insulation element 13 extends beyond the respective fuse 12 to which the respective insulation element 13 is assigned, as a result of which the respective insulation element 13 also rests directly on the respective wall regions W1 and W2 of the respective connecting element 9 which adjoin the respective fuse 12 of the respective connecting element 9 on both sides.
  • the respective wall regions W1 and W2 are, for example, respective sub-regions of the respective connecting element 9, the respective wall regions W1 and W2 of which adjoin the respective fuse 12 on both sides and directly.
  • the respective fuse 12 is formed in particular in that the respective fuse 12 has a smaller cross-section than the respective wall areas W1 and W2 of the respective connecting element 9.
  • the respective fuse 12 of the respective connecting element 9 creates a local cross-sectional reduction or cross-sectional tapering of the respective connecting element 9, whereby a reliable triggering of the respective fuse 12 can be achieved.
  • the respective wall region W2 of the respective connecting element 9 has a respective first side SE1 pointing away from the respective connection element 6, to which the respective connecting element 9 is assigned, and facing the foam 10, and a respective second side SE2 pointing away from the first side SE1 and directly adjoining the first side SE1, wherein the respective insulation element 13, which is assigned to the respective connecting element 9, is in direct contact with both the first side SE1 and the second side SE2. This can ensure particularly effective and efficient thermal insulation of the respective fuse 12.
  • the respective insulation element 13 extends beyond the respective connecting element 9, and in particular beyond the wall region W2, and thereby directly adjoins a side SE3 of the respective connection element 6, to which the respective connecting element 9 is assigned, facing away from the respective cell housing 5 and facing the foam 10.
  • the respective insulation element 13 lies directly on the first foam 10.
  • Fig. 2 shows the electrical energy storage device 1 in a schematic plan view.
  • FIG. 2 some of the insulation elements 13 are not shown, so that in Fig. 2 some of the connecting elements 9, in particular their respective fuses, can be seen particularly well. 12 are particularly clearly visible. Also visible in Fig. 2 is an element 14 which is designed as a carrier, for example.
  • the carrier is connected to the connecting device 8, whereby, for example, the connecting device 8 is carried by the carrier.
  • the element 14 is an electrical insulation element, thus an electrical insulator, by means of which, for example, at least respective partial areas of the connecting device 8 are electrically insulated at least from respective partial areas of the cell housing 5.
  • the insulator is, for example, a non-conductor whose electrical conductivity is, for example, less than 10' 8 S*cm -1 .
  • the carrier is a carrier plate, also referred to as a carrier board.
  • the carrier is or functions as an insulating layer, also referred to as an insulating layer, by means of which at least the partial areas of the connecting device 8 are electrically insulated at least from the partial areas of the cell housing 5.
  • the element 14 is or functions as a seal, for example to keep the foam 10 away from areas.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un dispositif de stockage d'énergie électrique (1) pour un véhicule à moteur, ledit dispositif de stockage d'énergie comprenant : un boîtier de stockage (2) qui définit un espace de réception (3); et des cellules de stockage (4) qui sont disposées dans l'espace de réception (3), sont conçues pour stocker de l'énergie électrique, et comportent chacune un boîtier de cellule (5) et au moins un élément terminal (6) auquel est attribué un élément de connexion (9) d'un dispositif de connexion (8) disposé dans l'espace de réception (3), l'élément de connexion (9) associé à l'élément terminal (6) ayant un fusible (12) et étant électriquement connecté à l'élément terminal (6) auquel l'élément de connexion (9) est attribué, en conséquence de quoi les éléments terminaux (6) sont électriquement connectés les uns aux autres via le dispositif de connexion (8), une mousse (10), qui connecte les cellules de stockage (4) les unes aux autres et/ou au boîtier de stockage (2), étant disposée dans l'espace de réception (3). Un élément d'isolation (13) est attribué à chaque fusible (12).
PCT/EP2024/062495 2023-06-05 2024-05-07 Dispositif de stockage d'énergie électrique pour un véhicule à moteur, en particulier pour une automobile, et véhicule à moteur Pending WO2024251447A1 (fr)

Priority Applications (1)

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CN202480017693.7A CN120898324A (zh) 2023-06-05 2024-05-07 用于机动运输工具、尤其是用于机动车的电蓄能器以及机动运输工具

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DE102023114656.4A DE102023114656A1 (de) 2023-06-05 2023-06-05 Elektrischer Energiespeicher für ein Kraftfahrzeug, insbesondere für einen Kraftwagen, sowie Kraftfahrzeug
DE102023114656.4 2023-06-05

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WO2024251447A1 true WO2024251447A1 (fr) 2024-12-12

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PCT/EP2024/062495 Pending WO2024251447A1 (fr) 2023-06-05 2024-05-07 Dispositif de stockage d'énergie électrique pour un véhicule à moteur, en particulier pour une automobile, et véhicule à moteur

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CN (1) CN120898324A (fr)
DE (1) DE102023114656A1 (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210175588A1 (en) * 2014-09-10 2021-06-10 Cellink Corporation Battery interconnects
DE102021112889A1 (de) 2021-05-18 2022-11-24 Bayerische Motoren Werke Aktiengesellschaft Zellverbinder für ein Batteriemodul, Batteriemodul mit Zellverbinder
EP3633764B1 (fr) * 2017-05-29 2023-05-24 Sanyo Electric Co., Ltd. Bloc-batterie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102915529B1 (ko) * 2018-11-12 2026-01-21 모비우스.에너지 코포레이션 스마트 배터리 팩
KR102820678B1 (ko) * 2019-09-24 2025-06-12 주식회사 엘지에너지솔루션 버스바 플레이트를 포함하는 배터리 모듈, 그것을 포함하는 배터리 팩, 및 전자 디바이스
DE102021115444A1 (de) * 2021-06-15 2022-12-15 Bayerische Motoren Werke Aktiengesellschaft Elektrischer Energiespeicher für ein Kraftfahrzeug sowie Verfahren zum Herstellen eines solchen elektrischen Energiespeichers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210175588A1 (en) * 2014-09-10 2021-06-10 Cellink Corporation Battery interconnects
EP3633764B1 (fr) * 2017-05-29 2023-05-24 Sanyo Electric Co., Ltd. Bloc-batterie
DE102021112889A1 (de) 2021-05-18 2022-11-24 Bayerische Motoren Werke Aktiengesellschaft Zellverbinder für ein Batteriemodul, Batteriemodul mit Zellverbinder

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DE102023114656A1 (de) 2024-12-05

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