EP4128431A1 - Coque de batterie, batterie de traction, véhicule à moteur et procédé de fabrication d'une coque de batterie - Google Patents

Coque de batterie, batterie de traction, véhicule à moteur et procédé de fabrication d'une coque de batterie

Info

Publication number
EP4128431A1
EP4128431A1 EP21700049.6A EP21700049A EP4128431A1 EP 4128431 A1 EP4128431 A1 EP 4128431A1 EP 21700049 A EP21700049 A EP 21700049A EP 4128431 A1 EP4128431 A1 EP 4128431A1
Authority
EP
European Patent Office
Prior art keywords
battery shell
semipermeable membrane
battery
membrane
pressure difference
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
EP21700049.6A
Other languages
German (de)
English (en)
Inventor
Stefan Lenz
Georg Enkirch
Ibrahim Koukan
Stefan TRÖTSCHEL
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.)
Kautex Textron GmbH and Co KG
Original Assignee
Kautex Textron GmbH and Co KG
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 Kautex Textron GmbH and Co KG filed Critical Kautex Textron GmbH and Co KG
Publication of EP4128431A1 publication Critical patent/EP4128431A1/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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/26—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in either direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/06—Devices, e.g. valves, for venting or aerating enclosures for aerating only
    • 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 of a single cell or a single battery
    • H01M50/147—Lids or covers
    • 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
    • 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
    • H01M50/394—Gas-pervious parts or elements
    • 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
    • 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
    • H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • a battery in particular a traction battery for energy storage in a motor vehicle, consists of a large number of components.
  • One of the tasks of a battery housing is to attach and protect battery modules and other required components.
  • the invention is based on the object of providing an improvement or an alternative to the prior art.
  • the invention describes a technical solution for a safe, permanent, tight and inexpensive integration of one or more ventilation elements in a battery housing.
  • battery shell is a housing component of a battery, mean, in particular a traction battery.
  • ⁇ particular is arranged a battery shell for holding components of a battery, so that this shell by the battery ⁇ protected from external influences and / or at least fixed with telbar can.
  • a “semipermeable membrane” is understood to mean a partially permeable wall which allows particles with a size below a membrane-dependent defined size to pass through the semipermeable membrane, while particles with a size above this membrane-dependent defined size cannot pass through the membrane.
  • a “receiving geometry” is understood to mean an area of the geometry of the battery shell that is designed to receive one or more semipermeable membranes On receiving geometry in particular one or more ventilation openings.
  • the receiving geometry is preferably set up for receiving a mushroom umbrella valve and / or a semipermeable membrane.
  • a mushroom umbrella valve is preferably formed from an elastomer.
  • the protective cover is preferably connected to the receiving geometry in a force-fitting and / or form-fitting manner, in particular with a latching element.
  • the protective cover is preferably crimped onto the receiving geometry.
  • the receiving geometry is indirectly cohesively or non-positively connected to the semipermeable membrane, in particular by means of a membrane carrier, which is understood to mean that the receiving geometry is directly connected to a membrane carrier, in particular frictionally and / or positively connected to the membrane carrier, which in turn is directly cohesively or non-positively connected to the semipermeable membrane.
  • a “membrane support” is understood to mean a component which is set up for a direct material or force-fitting connection with the semipermeable membrane.
  • a membrane support can be materially or non-positively connected to a plurality of semipermeable membranes.
  • a membrane support preferably has an umbrella mushroom valve on.
  • a membrane carrier is preferably connected to the receiving geometry in a force-fitting and / or form-fitting manner.
  • a membrane carrier is preferably formed from polyethylene (PE) or polyoxymethylene (POM) or polyamide (PA).
  • PE polyethylene
  • POM polyoxymethylene
  • PA polyamide
  • a membrane carrier is preferably sealed off from the receiving geometry of the battery shell by means of a sealant.
  • a ventilation opening an opening in the Aufnah megeometrie, which is set up for ventilation and / or venting of at least one side of the semipermeable membrane, so that the semipermeable membrane the gas volume within a battery housing, which has the battery shell, with which the battery housing Can bring surrounding gas volume in connection, so that a gas exchange via the semipermeable membrane between the gas volume within the battery housing and the gas volume surrounding the battery housing can take place.
  • a connection brought about by welding or gluing or vulcanizing or soldering is preferably a materially bonded connection.
  • the ventilation elements from the prior art have a separate ventilation element housing which accommodates the ventilation element and which is formed from copper, metal or plastic.
  • battery trays in particular battery trays for a traction battery, are known which, in a designated manner, can be ventilated and / or vented by means of a venting element positively connected to the battery tray.
  • a battery shell is proposed here, which is molded from plastic and has a semipermeable membrane as a ventilation element and / or ventilation element, the semipermeable membrane being firmly or non-positively connected to the battery shell.
  • the semipermeable membrane is set up to be permeable to any gaseous substance and impermeable to any liquid substance at least up to a critical pressure difference.
  • the battery shell proposed here can be used as a component of a battery housing, so that the battery housing can be ventilated and vented via the semipermeable membrane.
  • a battery housing having a battery shell according to the first aspect of the invention can be protected against the ingress of liquids, in particular against the ingress of water, at least up to a critical pressure difference, since the semipermeable membrane connected to the battery shell is set up for a liquid substance to be impermeable at least up to a critical pressure difference.
  • the semipermeable membrane is encapsulated with a membrane carrier or is connected to a membrane carrier with a material fit, wherein the membrane carrier can also have a mushroom umbrella valve.
  • the semipermeable membrane is preferably connected directly to the battery shell, the semipermeable membrane being welded or glued to the battery shell.
  • a battery shell is proposed which is directly materially connected to a semipermeable membrane.
  • the semipermeable membrane When integrally connecting, it is preferable to weld the molded battery shell and the semipermeable membrane using the first heat of the battery shell, the semipermeable membrane preferably being brought into contact with the battery shell, which has at least not yet completely solidified after molding.
  • the semipermeable membrane is arranged in the mold for forming the battery shell and only then is the battery shell formed so that the semipermeable membrane is already firmly bonded to the battery shell when the battery shell is formed.
  • the area of the receiving geometry which is directed towards the receiving and connecting of the semipermeable membrane is preferably oriented towards the interior of the designated battery housing.
  • the semipermeable membrane can advantageously through this way the arrangement can be better protected from the effects of external influences.
  • the semipermeable membrane is pressed into the battery shell.
  • a simple and maintenance-friendly connection between the battery shell and the semipermeable membrane can thus advantageously be achieved.
  • a battery shell is proposed in which the cohesive or non-positive connection fails at the defined pressure difference between the battery shell and the se mipermeable membrane.
  • the adhesive of a cohesive connection produced by means of an adhesive between the semipermeable membrane and the battery shell can be dimensioned and / or selected in such a way that the cohesive connection brought about by the adhesive dissolves when the defined critical pressure difference is reached.
  • the connection between the semipermeable membrane and the battery shell can be restored, preferably by replacing the adhesive layer used for the connection.
  • a semipermeable membrane is set up by means of a special structure, shape or construction so that it breaks predictably at a defined pressure difference.
  • connection between the battery shell and the semipermeable membrane is preferably set up to be released in the event of a pressure difference of more than 200 mbar.
  • the connection between the battery shell and the semipermeable membrane is preferably set up to be released when there is a difference in pressure of more than 150 mbar.
  • the connection between the battery shell and the semipermeable membrane is preferably set up to be released in the event of a pressure difference of more than 100 mbar.
  • the connection between the battery shell and the semipermeable membrane is preferably set up to be released at a pressure difference of more than 70 mbar.
  • the connection between the battery shell and the semipermeable membrane is preferably set up to dissolve at a pressure difference of more than 60 mbar.
  • a semipermeable membrane can withstand a comparatively larger pressure difference before it fails irreversibly.
  • a semipermeable membrane “overmoulded” with a plastic is understood to mean a semipermeable membrane which is encased at least over part of its surface by a plastic.
  • the battery shell preferably has a parting plane, the receiving geometry in the battery shell being arranged such that the receiving geometry extends essentially parallel to the parting plane of the battery shell.
  • the “parting plane” of the battery shell is understood to mean the plane of the battery shell in which the molding tool can be opened to form the battery shell.
  • the protective cover proposed here is designed to keep mechanical loads off the semipermeable membrane and possibly a mushroom umbrella valve.
  • the protective cover is designed in such a way that there is a flow channel between the protective cover and the battery shell, so that gas exchange from the interior of the battery shell through the semipermeable membrane is possible Environment of the battery shell, in particular the environment of the battery shell outside of the protective cover, is made possible.
  • the protective cover is preferably designed to increase the electromagnetic compatibility of the battery shell.
  • the protective cover optionally has a bursting means. It can advantageously be achieved in this way that a semipermeable membrane deflected in the direction of the protective cover bursts open with a defined deflection and thus with a defined pressure difference and thus has a lower flow resistance for a rapid pressure reduction in the interior of the battery shell.
  • the protective cover preferably has a contacting element.
  • a contacting element is set up for an electrical connection to a further component.
  • an existing element can advantageously be supplemented by the protective cover to increase the electromagnetic compatibility, in particular through the electrical connection between the existing element and the protective cover, in particular by means of the contacting element.
  • the object is achieved by a traction battery, in particular a traction battery for a motor vehicle, having a battery shell with the features of claim 1, wherein preferably embodiments can be achieved by a battery shell with the features of a claim dependent on claim 1.
  • the membrane carrier which has a semipermeable membrane
  • Membrane carrier comprising a semipermeable membrane and an umbrella mushroom valve
  • the receiving geometry 20 has a plurality of ventilation openings 28, the ventilation openings 28 being slit-shaped and configured to ventilate and vent the semipermeable membrane 40 from the outside (not designated) of the battery shell 10.
  • the receiving geometry 20 is covered on the outside 14 of the battery shell 10 with a protective cover 70, which protects the semipermeable membrane 40 and the mushroom umbrella valve 60 from external loads and at the same time improves the electromagnetic compatibility emanating from the battery shell 10.
  • the protective cover 70 has at least one contacting element 72, which is set up for connection to further elements (not shown) in order to improve the electromagnetic compatibility.
  • the protective cover 70 has a bursting means 50 which is in operative connection with the semipermeable membrane 40 and is set up to burst the semipermeable membrane 40 at high overpressures on the inside 12 of the battery shell 10.
  • the protective cover 70 is positively and / or non-positively connected to the battery shell 10, in particular to the receiving geometry 20 of the battery shell 10. Between the protective cover 70 and the battery shell 10 runs at least in some areas a flow channel (not designated) which is set up for gas exchange between the semipermeable membrane 40 and / or the mushroom umbrella valve 60 and the outside 14 of the battery shell 10.
  • the area of a battery shell 10 in FIG. 7 is similar to the embodiment according to FIG.
  • the semipermeable membrane 40 is thus connected at least directly to the battery shell 10 by means of the membrane carrier 42.
  • the membrane carrier 42 also has ventilation openings (not shown / not designated), which enable a flow exchange between the outside 14 of the battery shell 10 and the semipermeable membrane 40 and the mushroom umbrella valve 60.
  • the membrane carrier 42 is materially connected to the semipermeable membrane 40 and enables the semipermeable membrane and / or the mushroom umbrella valve 60 to be exchanged easily.
  • the protective cover is preferably connected to the membrane carrier 42 and can be fastened together with the membrane carrier 42 by means of the clamping means 80 in the battery shell 10.

Abstract

L'invention concerne une coque de batterie, en particulier une coque de batterie pour une batterie de traction d'un véhicule automobile, ladite coque de batterie comprenant une membrane semi-perméable qui est liée par liaison de matière ou par friction à la coque de batterie.
EP21700049.6A 2020-03-26 2021-01-06 Coque de batterie, batterie de traction, véhicule à moteur et procédé de fabrication d'une coque de batterie Pending EP4128431A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020108442.0A DE102020108442A1 (de) 2020-03-26 2020-03-26 Batterieschale, Traktionsbatterie, Kraftfahrzeug und Verfahren zum Herstellen einer Batterieschale
PCT/EP2021/050117 WO2021190791A1 (fr) 2020-03-26 2021-01-06 Coque de batterie, batterie de traction, véhicule à moteur et procédé de fabrication d'une coque de batterie

Publications (1)

Publication Number Publication Date
EP4128431A1 true EP4128431A1 (fr) 2023-02-08

Family

ID=74130249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21700049.6A Pending EP4128431A1 (fr) 2020-03-26 2021-01-06 Coque de batterie, batterie de traction, véhicule à moteur et procédé de fabrication d'une coque de batterie

Country Status (5)

Country Link
US (1) US20230103100A1 (fr)
EP (1) EP4128431A1 (fr)
CN (1) CN115298891A (fr)
DE (1) DE102020108442A1 (fr)
WO (1) WO2021190791A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021131758A1 (de) * 2021-12-02 2023-06-07 Boge Elastmetall Gmbh Druckausgleichselement
DE102022205366A1 (de) 2022-05-30 2023-11-30 Volkswagen Aktiengesellschaft Batteriezelle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1501835A (fr) * 1966-09-22 1967-11-18 Wonder Piles Perfectionnements aux membranes étanches aux liquides mais perméables aux gaz, notamment pour piles et accumulateurs
US7579105B2 (en) * 2005-02-18 2009-08-25 The Gillette Company End cap assembly and vent for high power cells
DE102012022346B4 (de) * 2012-11-15 2018-03-22 Mann+Hummel Gmbh Batterie-Gehäuse
EP3046161B1 (fr) * 2015-01-13 2017-12-20 Bimed Teknik Aletler Sanayi ve Ticaret A.S. Dispositif d'équilibrage de pression
DE102015205029A1 (de) * 2015-03-19 2016-09-22 Volkswagen Aktiengesellschaft Vorrichtung zum Ausgleichen eines Innendruckes in einem geschlossenen Gehäuse
CN205992562U (zh) * 2016-04-09 2017-03-01 百美德技术有限公司 压力平衡装置
CN205881961U (zh) * 2016-08-03 2017-01-11 长兴红艳塑料制品有限公司 一种电池塑料外壳
DE202019100048U1 (de) 2019-01-07 2019-01-14 Lisa Dräxlmaier GmbH Hochvoltdurchführung

Also Published As

Publication number Publication date
US20230103100A1 (en) 2023-03-30
CN115298891A (zh) 2022-11-04
DE102020108442A1 (de) 2021-09-30
WO2021190791A1 (fr) 2021-09-30

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