EP4237323A1 - Module de batterie à faible champ de dispersion - Google Patents

Module de batterie à faible champ de dispersion

Info

Publication number
EP4237323A1
EP4237323A1 EP21791409.2A EP21791409A EP4237323A1 EP 4237323 A1 EP4237323 A1 EP 4237323A1 EP 21791409 A EP21791409 A EP 21791409A EP 4237323 A1 EP4237323 A1 EP 4237323A1
Authority
EP
European Patent Office
Prior art keywords
module
sub
accumulators
current flow
electrical contacts
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
EP21791409.2A
Other languages
German (de)
English (en)
Inventor
Marc Pein
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.)
ThyssenKrupp AG
ThyssenKrupp Marine Systems GmbH
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Marine Systems GmbH
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 ThyssenKrupp AG, ThyssenKrupp Marine Systems GmbH filed Critical ThyssenKrupp AG
Publication of EP4237323A1 publication Critical patent/EP4237323A1/fr
Pending 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
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
    • B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
    • B63G8/08—Propulsion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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 invention relates to a battery module, in particular for lithium-based accumulators.
  • Lithium-based accumulators are of increasing interest, for example because of their high energy density.
  • the individual cells cannot simply be enlarged at will. This leads to a large number of accumulators being combined to form a larger module on a regular basis.
  • the problem of thermal runaway is given precisely with these accumulators. Since this also creates a large amount of gas in relation to the volume of the accumulator and, in the case of larger cells, also an absolutely correspondingly large amount, this means a great risk, particularly in critical environments, as has been shown, for example, with accumulators in aircraft.
  • Accumulators usually have two electrodes, an anode and a cathode. In the simplest case, an electrolyte is arranged between them. The electrolyte can be liquid or solid. In addition, there are often layers on the electrode, especially intercalation layers in lithium accumulators. Each electrode is usually electrically contacted by a contact that is accessible from the outside.
  • Submarines traditionally have large-capacity batteries for underwater travel, which are a vital source of energy. In an emergency, it must always be ensured that energy is provided to keep the crew alive and to surface. It is therefore important, especially in the submarine sector, that all important components are designed to be shock-resistant, i.e. withstand a shock wave triggered by a detonation in the immediate vicinity and then still be functional. Extremely high forces occur here for a short time.
  • a battery with lithium cells with a flame-retardant filling foam between the lithium cells is known from US 2012/0003508 A1.
  • DE 10 2017 214 289 A1 discloses a battery module with at least two battery cells and at least one safety valve each.
  • DE 10 2015 219 280 A1 discloses a battery system with a plurality of battery cells cast with a casting compound.
  • DE 10 2008 013 188 A1 discloses an electrochemical accumulator with a degassing space for receiving gases escaping from the cells in the event of a malfunction.
  • DE 10 2016 001 287 A1 discloses a battery pack with a plurality of battery cells and a casting compound, the battery cells being surrounded by a polyimide layer.
  • a shock-resistant battery module in particular for lithium accumulators, is known from PCT/EP2020/000182.
  • a rechargeable battery is known from DE 10 2009 000 675 A1.
  • a battery system is known from EP 2 639 858 A1.
  • a battery with a first and a second battery module is known from DE 10 2013 203 204 A1.
  • the object of the invention is to provide a battery module which has the lowest possible magnetic radiation during operation and is particularly stable over the long term.
  • the battery module according to the invention has a first sub-module and a second sub-module.
  • a sub-module preferably consists of a sub-module housing and accumulators arranged in the sub-module housing.
  • the accumulators are preferably encapsulated in the partial module housing so that they are held securely and reliably by the encapsulation compound.
  • the sub-modules are preferably cuboid.
  • other geometries are also conceivable for the partial modules, in particular geometries which optimally adapt to the curves in a submarine in order to be able to optimally utilize the space inside the pressure hull.
  • the first sub-module has a plurality of accumulators and the second sub-module has a plurality of accumulators, the number of accumulators in the first sub-module particularly preferably being the same as the number of accumulators in the second sub-module.
  • Each accumulator has a first electrical contact and a second electrical contact. The first electrical contact and the second electrical contact are each arranged on the same end face of the accumulator.
  • the end face of the first sub-module with the electrical contacts is arranged in a first plane, and the end face of the second sub-module with the electrical contacts is arranged in a second plane.
  • the first level is plane-parallel to the second level.
  • all of the first electrical contacts are connected to a first, inner electrode of the accumulators and all of the second electrical contacts are connected to a second electrode of the accumulators.
  • each first electrical contact is connected to the cathode of the respective battery and each second electrical contact is connected to the anode of the respective battery.
  • the first electrical contact on each accumulator is preferably at the same potential as the second electrical contact (minimal type-related fluctuations due to minimal differences in the accumulators are neglected).
  • the connections can also be the other way around.
  • all of the first electrical contacts have a first polarity and all of the second electrical contacts have the opposite second polarity.
  • all first contacts correspond to the positive pole and all second contacts to the negative pole or vice versa.
  • All electrical contacts of the first sub-module are arranged on the side of the first sub-module opposite the second sub-module and all electrical contacts of the second sub-module are arranged on the side of the second sub-module opposite the first sub-module.
  • the sub-modules are therefore aligned in such a way that the sides with the contacts of the accumulators point towards one another. However, there is a spatial distance between the contacts so that they do not touch. This minimizes the space between electrical connections and thus between the currents flowing during operation, in order to minimize the magnetic flux generated by the conductor loop and thereby keep the signature as small as possible.
  • the first and second electrical contacts of the first partial module are connected to one another in such a way that a current flow results, which flows on average in the first plane or parallel to the first plane.
  • the first and second electrical contacts of the second sub-module are connected to one another in such a way that a current flow results, which flows on average in the second plane or plane-parallel to the second plane.
  • the current flow of the first sub-module and the second sub-module run in opposite directions. The result is that the electric current flows in one sub-module, for example, from top to bottom and in the other sub-module from bottom to top.
  • the currents flowing in the sub-modules are therefore in opposite directions, which, together with the smallest possible distance, leads to maximum compensation of the electrical fields that arise.
  • the current flow within the meaning of the invention is the effective averaged total current flow over a sub-module.
  • partial currents that do not flow parallel to the mean current flow can also occur.
  • the partial currents can arise because different accumulators have different internal resistances.
  • the current flow is thus to be understood as the effective current flow over an entire sub-module.
  • the first level, in which the front side of the first sub-module is, and the second level, in which the front side of the second sub-module with the electrical contacts is arranged are to be understood technically and also include a tolerance range in which the contacts below and above this level can be arranged.
  • the maximum extent of the tolerance range is, for example, the length of the contacts perpendicular to the plane. This can also be the case, for example, if one of the pole contacts is longer and the other shorter, which occurs with certain types of accumulators. This can also serve, for example, to prevent an accumulator from being used incorrectly, which would result in damage.
  • the electrical contacts can be connected by electrical conductors, for example busbars, metal strips, cables or the like. Connections can also be made via functional elements, for example fuses.
  • all the first electrical contacts can be connected to a first busbar and all the second electrical contacts can be connected to a second busbar.
  • all of the accumulators are connected in parallel, so that the battery module can provide a maximum current, but at the lowest possible voltage, the voltage of the individual accumulator.
  • the length of the first busbar and the second busbar are aligned (predominantly) in the direction of the current flow.
  • the busbars of the first sub-module and of the second sub-module are preferably aligned parallel to one another.
  • the first busbar of the first sub-module preferably runs parallel to the first busbar of the second sub-module and the second busbar of the first sub-module runs parallel to the second busbar of the second sub-module.
  • first contacts of each group of accumulators can each be electrically connected to a first busbar, and the second contacts of these groups of accumulators are each correspondingly connected to second busbars.
  • first busbar of a first group is preferably combined with the second busbar of a second group connected, wherein the second group is preferably arranged electrically directly behind the first group.
  • the accumulators of a group are thus connected in parallel, the groups are connected to each other in series.
  • the groups of a partial module that are electrically connected to one another are preferably arranged one above the other, so that on average there is a current flow in the first plane, in the second plane or parallel to these planes.
  • the number of groups is preferably 2 to 50, particularly preferably 2 to 20.
  • the number of accumulators per group is preferably 2 to 15, particularly preferably 3 to 10, very particularly preferably 4 to 8.
  • the parallel electrical connection of the accumulators in one Group, which in turn is connected in series with other groups, has the advantage that, on the one hand, a higher output voltage is achieved than with a purely parallel arrangement, and a higher maximum current than with a serial arrangement.
  • the size and number of the groups can thus be selected in such a way as to provide a voltage that is sensible for the network to be supplied, it being quite sensible and usual to convert the voltage before feeding into the network. Furthermore, the failure of a single accumulator does not lead to the failure of the entire battery module, as is the case with a purely serial connection of the accumulators.
  • all accumulators are connected in series. To do this, the positive pole of one accumulator is connected to the subsequent negative pole of the next accumulator. In this way the maximum tension is reached.
  • the disadvantage is that the maximum current is low, ie only the maximum current that a single accumulator can generate. In addition, the failure of just one accumulator leads to the failure of the entire battery module.
  • the arrangement of the electrical contacts and connecting electrical conductors is thus chosen so that the direction of current when current is drawn from the battery module in the first sub-module (in particular spatially) opposite to the direction of current in the second submodule is.
  • the rms average current flows from top to bottom in the first sub-module, while the rms average current flows from bottom to top in the second sub-module.
  • the module connections for making electrical contact with the battery module are particularly preferably arranged at the top or bottom of the battery module.
  • the module connections for making electrical contact with the battery module are particularly preferably arranged at the top.
  • partial flows in the first partial module and partial flows in the second partial module are also arranged antiparallel to one another, ie in opposite directions. This also results in optimal compensation for the partial flows.
  • the accumulators which are adjacent perpendicularly to the current flow are electrically connected in parallel and the accumulators which are adjacent in the direction of the current flow are electrically connected in series. This results in a lattice-like structure on each sub-module, with the two lattice-like structures of the two sub-modules lying opposite one another.
  • the current then only flows through a very narrow and flat conductor loop, which minimizes the magnetic signature of the battery module during operation.
  • a battery module according to the invention is therefore particularly suitable for use on board a submarine.
  • each accumulator has a cylindrical basic shape.
  • the cylindrical shape optimizes both production and packability in the sub-modules.
  • the first sub-module and the second sub-module are identical in construction, but by 180° around an axis which is parallel to the current flow lying, turned. This results in a simple modular production since all sub-modules are structurally identical. Only the arrangement of the accumulators has to be rotated in one sub-module relative to the other sub-module for electrical reasons.
  • the first sub-module and the second sub-module are constructed with mirror symmetry.
  • the arrangement of the accumulators must be rotated in one sub-module relative to the other sub-module for electrical reasons.
  • the accumulators are arranged hexagonally. This corresponds to the closest packing of cylindrical objects.
  • the first electrical contact and the second electrical contact of a rechargeable battery are each arranged one above the other in the direction of the current flow.
  • the plus and minus poles of each are perpendicular to each other.
  • the sequence of the electrical contacts is reversed in each case in the case of accumulators which are arranged adjacently and offset perpendicularly to the current flow. If, for example, the positive pole is at the top and the negative pole is at the bottom in the upper layer, the negative pole is at the top and the positive pole is at the top in the overlapping layer below. This leads to the fact that the same electrical contacts are preferably in a row.
  • the same electrical contacts arranged next to one another perpendicularly to the current flow are conductively connected to a metal strip.
  • the metal strip has two advantages in addition to the electrical contact. On the one hand, a certain difference in height between the electrical contacts of the adjacent layers can be compensated for by the width. On the other hand, such a surface also represents a good heat exchange surface. This is connected to the electrodes in the accumulators via the electrical contacts, so that heat can be dissipated easily. And the heat can then be released to the environment via this surface.
  • two electrical contacts, arranged one above the other in the direction of the current flow, of two accumulators that are adjacent in the direction of the current flow are electrically connected to one another.
  • these electrical contacts, which are arranged one above the other in the direction of the current flow, are opposite contacts, practically speaking one positive pole and a negative pole.
  • this electrical connection is designed as a fuse.
  • all the accumulators of a sub-module are connected to one another in the form of a network.
  • the same poles lying next to one another are therefore connected to one another, and the neighboring opposite poles lying one above the other are also connected to one another, so that an electrical grid results.
  • Each sub-module thus has a lattice, with these lattices lying plane-parallel on top of one another. This grid minimizes the stray magnetic field and at the same time equalizes the temperature.
  • a cooling device is arranged between the electrical contact of the accumulators of the first sub-module and the electrical contact of the second sub-module. Effective cooling is possible precisely because of the flat design of the contacts.
  • the cooling devices and the electrical contacts are particularly preferably only as far apart from one another as is necessary for electrical insulation. This improves heat transfer on the one hand and minimizes the stray magnetic field on the other.
  • the two sub-modules together form a battery module.
  • the battery module is connected directly or indirectly to an electrical consumer network, ie the vehicle electrical system. At one end, the battery module has contacts for contacting and connecting to the electrical consumer network.
  • the sub-modules are connected to each other at the opposite end.
  • the two sub-modules are electrically connected to one another at the lower end. The current thus flows downwards in one sub-module and upwards in the other sub-module.
  • the electrical contacts for making contact with the battery module are preferably arranged on the upper side and preferably as close together as possible. This embodiment is particularly preferred for retrofitting on a submarine which was previously equipped with lead-acid batteries.
  • the two partial modules are electrically connected to one another at the upper end.
  • the current thus flows upwards in one sub-module and downwards in the other sub-module.
  • the electrical contacts for contacting the battery module are preferably arranged on the underside and preferably as close together as possible.
  • the battery module has a first module contact and a second module contact.
  • the first module contact is connected to the first sub-module and the second module contact is connected to the second sub-module.
  • the first module contact is the positive pole and the second module contact is the negative pole (or vice versa).
  • the battery module consists of n first sub-modules and n second sub-modules, where n is a natural number between 1 and 200, preferably between 2 and 40.
  • the first sub-modules and the second sub-modules are each arranged relative to one another as described above, so that two opposite sub-modules always ensure the advantage according to the invention of minimizing the magnetic flux.
  • the sub-modules are then alternately electrically connected to one another on alternating sides, for example and in particular on the top and bottom. In this case, the electrical connection of the battery module to the consumer or vehicle electrical system is arranged on the first and last sub-module.
  • the casting compound is preferably a duroplastic, preferably an epoxide.
  • the casting compound preferably has a modulus of elasticity from 25 to 200 MPa, more preferably from 50 to 125 MPa, particularly preferably from 60 to 90 MPa, according to ISO 527.
  • the casting compound preferably has a tensile strength of from 2 to 20 MPa, more preferably from 3 to 15 MPa, particularly preferably from 4 to 9 MPa, according to ISO 527.
  • the casting compound preferably has a hardness of 20 to 100 Shore D according to ISO 53505, preferably from 35 to 80, particularly preferably from 50 to 75.
  • the thermal conductivity of the casting compound is preferably greater than 0.03 W/(m*K), preferably greater than 0.2 W/(m ⁇ K), more preferably greater than 0.5 W/(m ⁇ K), particularly preferably greater than 0.8 W/(m ⁇ K). Even if any high thermal conductivity would be desirable, but realistically the potting compound has a thermal conductivity which is less than 20 W/(m K), more likely less than 5 W/(m K), more likely less than 2 W/(m K) K). In particular, the thermal conductivity is determined according to ISO 8894-1.
  • FIG. 1 A part of a partial mode 110, 120 is shown in FIG.
  • a simple square array of 3x3 accumulators 10 is shown.
  • the number of accumulators 10 will be larger, but the principle remains the same.
  • Each accumulator 10 has a positive pole 40 and a negative pole 50 .
  • This simplified arrangement is only chosen for the purpose of clarity of the drawing.
  • the negative poles 50 are connected to one another via contacts 20 perpendicular to the current flow.
  • the negative poles 50 of the upper row of accumulators 10 are connected to the positive poles 40 of the underlying row of accumulators 10 via contacts 30 in the direction of the current flow in the direction of current flow.
  • the heat generated in an accumulator 10 is also dissipated via the electrical contacting of the poles 40 , 50 to the contacting 20 designed as a metal strip perpendicular to the current flow and is thus brought to the vicinity of the cooling device 160 over a large area.
  • the mean current flow 60 is shown, technically speaking flowing from the plus to the minus pole. Currents which flow in the contacts 20 perpendicularly to the current flow are averaged out, so that a current flow 60 results in summary.
  • the battery module 100 has a first sub-module 110 and a second sub-module 120 . All accumulators 10 of the first sub-module 110 are, as shown schematically in Fig. 1, contacted via a first electrical contact 130 and all accumulators 10 of second sub-module 120 are, as shown schematically in Fig. 1, contacted via a second electrical contact 140. The first electrical contact 130 is electrically connected to the second electrical contact 140 via a connection 150 .
  • the battery module 100 can be electrically contacted via a first connection 132 and a second connection 142 and can make electrical energy available or be charged.
  • a cooling device 160 is arranged between the first electrical contact 130 and the second electrical contact 140 .
  • the distance is kept as small as possible to enable optimal heat transfer without creating the risk of a short circuit.
  • the current flows, for example, in the first electrical contact 130 from top to bottom and in the second electrical contact 140 from bottom to top, represented by the current flows 60.
  • first electrical contact 130 has a certain spatial extent and is not represented as an exact plane (as a line).
  • second electrical contact 140 has a certain spatial extent and is not shown as an exact plane (as a line). This is necessary for production reasons. Nevertheless, within the meaning of the invention, the first electrical contact 130 is arranged in the first plane and the second electrical contact 140 is arranged in the second plane.

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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)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

La présente invention se rapporte à un module de batterie (100), le module de batterie (100) comportant un premier sous-module (110) et un second sous-module (120). Le premier sous-module (110) comporte une pluralité d'accumulateurs (10), tous les contacts électriques du premier sous-module (110) étant situés du côté du premier sous-module (110) en regard du second sous-module (120), tous les contacts électriques du second sous-module (120) étant situés sur le côté du second sous-module (120) en regard du premier sous-module (110), les accumulateurs (10) adjacents horizontalement étant électriquement connectés en parallèle et les accumulateurs (10) adjacents verticalement étant électriquement connectés en série.
EP21791409.2A 2019-10-29 2021-10-19 Module de batterie à faible champ de dispersion Pending EP4237323A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102019216606.7A DE102019216606A1 (de) 2019-10-29 2019-10-29 Batteriemodul
PCT/EP2020/000182 WO2021083538A1 (fr) 2019-10-29 2020-10-28 Module de batterie résistant aux chocs, notamment pour l'utilisation dans un sous-marin
DE102021200765.1A DE102021200765A1 (de) 2019-10-29 2021-01-28 Streufeldarmes Batteriemodul
PCT/EP2021/078967 WO2022090002A1 (fr) 2019-10-29 2021-10-19 Module de batterie à faible champ de dispersion

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EP4237323A1 true EP4237323A1 (fr) 2023-09-06

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EP20817218.9A Pending EP4052324A1 (fr) 2019-10-29 2020-10-28 Module de batterie résistant aux chocs, notamment pour l'utilisation dans un sous-marin
EP21791409.2A Pending EP4237323A1 (fr) 2019-10-29 2021-10-19 Module de batterie à faible champ de dispersion

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KR (2) KR20220024851A (fr)
AU (2) AU2020376136B2 (fr)
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WO (2) WO2021083538A1 (fr)

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AU2021370773B2 (en) 2024-07-04
WO2021083538A1 (fr) 2021-05-06
AU2020376136A1 (en) 2022-02-24
AU2020376136B2 (en) 2022-12-15
DE102019216606A1 (de) 2021-04-29
KR20220024851A (ko) 2022-03-03
AU2021370773A1 (en) 2023-06-08
EP4052324A1 (fr) 2022-09-07
WO2022090002A1 (fr) 2022-05-05
DE102021200765A1 (de) 2022-04-28
KR20230093000A (ko) 2023-06-26

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