EP4196711A1 - Druckausgleichsvorrichtung und elektrochemisches system - Google Patents
Druckausgleichsvorrichtung und elektrochemisches systemInfo
- Publication number
- EP4196711A1 EP4196711A1 EP21758705.4A EP21758705A EP4196711A1 EP 4196711 A1 EP4196711 A1 EP 4196711A1 EP 21758705 A EP21758705 A EP 21758705A EP 4196711 A1 EP4196711 A1 EP 4196711A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- pressure compensation
- compensation device
- pressure
- spring 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 188
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 37
- 238000001746 injection moulding Methods 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 5
- 230000002349 favourable effect Effects 0.000 description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910021389 graphene Inorganic materials 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/025—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining open after return of the normal pressure
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0493—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a spring other than a helicoidal spring
-
- 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
-
- 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
-
- 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
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
- H01M50/333—Spring-loaded vent valves
-
- 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
- F16K2200/00—Details of valves
- F16K2200/30—Spring arrangements
- F16K2200/302—Plurality of biasing means, e.g. springs, for opening or closing single valve member
-
- 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
- F16K2200/00—Details of valves
- F16K2200/30—Spring arrangements
- F16K2200/305—Constructional features of springs
-
- 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
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a pressure equalization device, in particular for equalizing an overpressure in an electrochemical system.
- the present invention also relates to an electrochemical system comprising one or more pressure compensation devices according to the invention.
- the present invention is based on the object of providing a pressure equalization device by means of which pressure equalization can be brought about in the event of excess pressure, in particular in an electrochemical system, and which can be produced as simply as possible.
- the pressure equalization device in particular for equalizing an overpressure in an electrochemical system, preferably comprises a base element and/or a sealing device which, when the pressure equalization device is in a closed state, closes an interior space of the pressure equalization device.
- the pressure compensation device includes a connecting device for connecting the base element and the sealing device.
- the sealing device bears sealingly against the base element in the closed state of the pressure compensation device and is fixed relative to the base element by means of the connecting device and if a thereby formed fixing connection between the base element and the sealing device can be released to release a fluid connection between the interior of the pressure equalization device and an environment of the pressure equalization device.
- the connecting device preferably comprises a spring element, the spring force of which acts in particular in a direction running transversely to an opening direction of the pressure equalization device.
- the spring force acts in a direction running at least approximately perpendicular to the opening direction of the pressure compensation device.
- the spring force of the spring element acts in a direction running transversely, in particular at least approximately perpendicularly, to the opening direction of the pressure equalization device, in particular an opening pressure of the pressure equalization device can be adjusted.
- the opening pressure is to be understood in particular as a critical pressure.
- the pressure compensation device changes from the closed state to the open state.
- the spring element is a shaped spring and/or a leaf spring.
- a “formed spring” is preferably to be understood as meaning a purposefully produced spring which is produced, for example, from spring steel sheet and/or spring steel strip.
- a shaped spring is in particular a flat spring and/or a leaf spring.
- thermo runaway is a so-called “thermal event”. Thermal events are associated in particular with a strong increase in pressure within the electrochemical cell and/or with high temperatures, for example with temperatures of 1000° C. or more.
- a pressure equalization between the interior of the pressure equalization device, preferably a container of an electrochemical system, and the environment of the pressure equalization device can now be brought about by the pressure equalization device.
- the container of the electrochemical system is, for example, a housing of the electrochemical system.
- Pressure equalization is preferably to be understood as an adjustment of the internal pressure in the interior of the pressure equalization device to an external pressure in the area surrounding the pressure equalization device, in particular when a limit value is exceeded, for example the opening pressure.
- the pressure compensation device is particularly suitable for use in vehicles, for example in electrochemical systems in the form of battery storage devices in vehicles.
- the safety of vehicle occupants is increased by the pressure equalization device, since gases can be discharged in the event of excess pressure in a battery store, and in particular ignition of the battery store can thus be prevented.
- the opening direction of the pressure compensation device is preferably a pressure compensation direction which runs from an area of higher pressure, for example the interior of the pressure compensation device, to an area of lower pressure, for example the area surrounding the pressure compensation device.
- the pressure compensation device is at least approximately circular in cross-section taken perpendicular to the opening direction.
- the pressure compensation device is at least approximately oval or rectangular in cross section taken perpendicular to the opening direction.
- a width and/or a diameter of an opening channel of the pressure equalization device in a plane arranged perpendicular to the opening direction is larger by a factor of three or more, in particular by a factor of five or more, than an extension of the pressure equalization device in a direction parallel to the opening direction.
- the pressure compensation device has a sufficiently large cross section to prevent the electrochemical system from bursting.
- the spring element has one or more retaining elements, for example one or more inwardly projecting latching Cracks, which, in the closed state of the pressure compensation device, reach behind and/or surround a part of the sealing device in the opening direction.
- the one or more retaining elements are preferably retaining lugs, which engage and/or snap into retaining recesses of the sealing device that are designed to be complementary thereto.
- the sealing device comprises a holding element which preferably has one or more holding elevations, for example one or more holding lugs.
- the one or more retaining depressions of the sealing device are arranged adjacent to and/or formed by the one or more retaining elevations.
- the holding element has a holding depression which is formed as a constriction adjacent to a holding elevation.
- the holding element has exactly one holding depression and/or exactly one holding elevation
- these are preferably formed circumferentially along a circumferential direction of the holding element.
- the spring element is at least approximately U-shaped in a cross section taken parallel to the opening direction.
- the spring element can thus encompass the holding element, in particular on three sides.
- the spring element preferably has two or more legs which extend away from a connecting section of the spring element in the opening direction. It can be favorable if the one or more retaining elements of the spring element are arranged on the ends of the two or more legs that face away from the interior.
- the connecting device comprises a receiving element, which receives and/or holds the spring element, in particular a connecting section of the spring element facing the interior.
- the receiving element has a counter-holding section, which is arranged on a side of the sealing section of the receiving element that faces away from the interior space and at a distance from it.
- the counter-holding section preferably engages behind the spring element in the closed state of the pressure compensation device.
- the connecting section of the spring element is accommodated and/or clamped between the sealing section and the counter-holding section of the receiving element.
- the receiving element forms, for example, a receiving shoe for the spring element.
- the receiving element has a plurality of contact areas, in particular punctiform or linear, which are in direct contact with the spring element and preferably receive and/or support the spring element on both sides.
- the multiple contact areas are formed by bulges in the sealing section and/or in the counter-holding section.
- the spring element abuts and/or rests on an end of the spring element facing the interior of the pressure compensation device on two contact areas of the sealing section.
- the connecting section is pressed by a contact area against the sealing section of the receiving element on a side of the connecting section facing away from the interior.
- the legs of the spring element are and/or are held at a distance from two further contact areas of the counter-retaining section of the receiving element and/or are pressed outwards.
- the sealing device preferably comprises a support plate and an adjoining holding element, for example a pin, with the holding element preferably extending away from the support plate in the opposite direction to the opening direction and/or being held and/or surrounded by the spring element in the closed state of the pressure equalization device, in particular in this way that the spring element surrounds the holding element, in particular on two sides.
- the one or more retaining elements of the spring element preferably engage in one or more retaining recesses of the retaining element and/or are locked with them.
- the one or more retaining elevations of the retaining element extend radially outwards away from a base body of the retaining element with respect to a central axis of the pressure compensation device.
- the spring element opens along a direction pointing towards the interior and, for example, the base element has a retaining element which is fixed between the legs of the spring element in the closed state of the pressure compensation device.
- the connecting section of the spring element is preferably fixed to the sealing device.
- one or more retaining elements of the spring element each form a stop with respect to a movement of the sealing device opposite to the opening direction when the pressure compensation device is in an open state.
- an opening pressure of the pressure compensation device can be adjusted by adjusting the shape of the one or more retaining elements.
- the opening pressure is set by setting an angle which inclined sections of the one or more retaining elements enclose with the opening direction.
- a contact pressure of the spring element on the sealing device can be adjusted by the angle. This can facilitate assembly of the pressure compensation device.
- the sealing device when the critical pressure is exceeded, for example the opening pressure, the sealing device is pressed in the opening direction with a force that exceeds a spring force of the spring element and if this causes the one or more legs of the spring element to move transversely to the Opening direction running direction (s) are pressed that a movement of the sealing device relative to the Basic element is released in the opening direction.
- the pressure compensation device thus reaches an open state.
- the connecting device comprises at least one further spring element, which is held in a compressed position between the base element and the sealing device in the closed state of the pressure equalization device and/or which is held in a relaxed position (rest position) in an open state of the pressure equalization device is.
- the at least one further spring element is preferably a compression spring, for example a spiral spring.
- the at least one further spring element is preferably used for fine adjustment of the opening pressure of the pressure compensation device, for example in the range of ⁇ 100 mbar.
- the spring force of the at least one further spring element preferably acts in a direction arranged transversely to the direction in which the spring force of the spring element acts.
- a ratio of a length of the spring element parallel to the opening direction to an average material thickness of the spring element is approximately 4:1 or more, in particular approximately 10:1 or more, for example approximately 20:1 or more .
- the ratio of the length of the spring element parallel to the opening direction to the average material thickness of the spring element is approximately 100:1 or less, in particular approximately 90:1 or less, for example approximately 80:1 or less.
- a ratio of a minimum width of the spring element perpendicular to the opening direction to the average material thickness of the Spring element about 2: 1 or more, in particular about 5: 1 or more, for example about 10: 1 or more.
- the ratio of the minimum width of the spring element perpendicular to the opening direction to the average material thickness of the spring element is preferably approximately 50:1 or less, in particular approximately 45:1 or less, for example approximately 40:1 or less.
- the minimum width of the spring element is preferably a distance between two retaining elements in a direction perpendicular to the opening direction.
- the minimum width of the spring element can be a minimum diameter of the spring element.
- the opening pressure and/or the critical pressure can preferably be adjusted by selecting the average material thickness and/or the length and/or the minimum width of the spring element.
- the sealing device comprises a membrane, in particular one that is porous, a sealing element and/or a sealing ring, in particular connected to the sealing element and/or the membrane.
- the sealing element has one or more sealing lips, which in particular bear against the base element at an end of the base element facing away from the interior and/or rest on the base element.
- the sealing element is preferably a molded seal.
- the sealing element is firmly bonded to the support plate and/or the sealing ring of the sealing device, for example by injection molding and/or vulcanizing. In this way, the pressure compensation device can be produced inexpensively.
- the one or more sealing lips is or are preferably supported on the base element at a differential pressure and/or form a seal.
- the membrane is materially fixed to the support plate and/or the sealing ring, for example by gluing and/or welding and/or overmoulding.
- the membrane can be fixed to the support plate and/or the sealing ring in a materially, non-positively and/or form-fitting manner, for example by welding, gluing and/or clamping. Furthermore, it can be provided that the membrane is arranged, in particular fixed, on the support plate and/or on the sealing ring by injection molding and/or encapsulation in an injection molding process.
- the sealing device preferably comprises a support plate.
- the membrane and/or a sealing element, in particular a sealing lip, and/or a sealing ring for fixing the membrane and/or the sealing element are preferably arranged on the support plate, in particular fixed in a form-fitting and/or force-fitting and/or cohesive manner.
- the support plate is an injection molded component.
- a sealing ring for fixing the membrane and/or the sealing element is preferably an injection molded component.
- a sealing element in particular a sealing lip, is preferably an injection molded component.
- the support plate together with the sealing ring for fixing the membrane and / or the sealing element and / or together with the sealing element, in particular the sealing lip, in a multi-stage Injection molding process, in particular a 2K injection molding process, is manufactured or manufacturable. It can be advantageous if the production takes place in a single tool, with the support plate being produced first and then the sealing ring and/or the sealing element, in particular the sealing lip, preferably one after the other and/or using different materials, in particular different plastic materials.
- the sealing ring and the sealing element, in particular the sealing lip, are preferably formed from a material that is different from the material of the support plate.
- sealing ring and the sealing element are designed as a common component and/or are formed from the same material, for example an elastic sealing material.
- the membrane can be introduced as an insert element into a tool for producing the sealing device and then overmoulded. In this way, in particular, a form-fitting reception of the membrane in the sealing ring is obtainable.
- a sealing ring for accommodating the membrane surrounds or surrounds the membrane, preferably radially circumferentially and/or on both main sides of the membrane.
- the sealing ring surrounds the membrane in an edge region thereof, preferably in a substantially C-shape.
- the web elements extend in particular from the sealing ring radially outwards to the sealing element, in particular to the sealing lip. It can be advantageous if the support plate comprises one or more receiving areas for receiving the one or more web elements.
- the one or more receiving areas are in particular indentations, which are filled or filled by means of the one or more bar elements. This preferably results in a substantially planar surface of the sealing device.
- the sealing ring and/or the sealing element, in particular the sealing lip, and/or one or more web elements preferably extend on an underside of the support plate, on which the holding element is arranged.
- sealing ring and/or the sealing element in particular the sealing lip, and/or one or more web elements extend on an upper side of the support plate facing away from the holding element.
- the membrane is formed from an open-pored material.
- the membrane is in particular air-permeable and/or water-impermeable.
- the membrane comprises a polytetrafluoroethylene (PTFE) material and/or graphene or is formed from an in particular open-pored PTFE material and/or a graphene material.
- PTFE polytetrafluoroethylene
- the membrane comprises or is formed from a fleece material.
- the pressure equalization device can include a protective cover which covers the remaining components of the pressure equalization device and which is in particular detachably connected to the base element of the pressure equalization device. It can be advantageous if the protective cover is connected to the base element in a material-to-material and/or non-positive and/or positive-locking manner.
- the protective cover is fixed to the base element by clipping, screwing, heat caulking and/or welding.
- the pressure compensation device comprises a monitoring device by means of which an opening process of the pressure compensation device can be detected and/or by means of which it can be monitored whether the pressure compensation device is in the open or closed state.
- the monitoring device preferably includes a magnet and a Hall sensor, the Hall sensor being fixed relative to a change in position of the sealing device.
- the magnet is arranged along the opening direction between the membrane of the sealing device and the spring element of the connecting device.
- the pressure compensation device comprises an EMC (electromagnetic compatibility) protection element, which serves to increase the electromagnetic compatibility of the pressure compensation device.
- EMC electromagnetic compatibility
- Contact protection elements can preferably be provided in the pressure compensation device, for example in the form of an insulating cover or casing.
- an insulating coating can be provided on the protective cover or the protective cover can be made of an insulating material, which means that it is possible to touch the protective cover without danger, even in the event of short circuits and/or electrical charges being released.
- the base element comprises an adapter section designed in the form of a ring for fixing the pressure compensation device on and/or in a wall of an electrochemical system.
- the adapter section preferably comprises a fixing element which is formed as part of the following fixing mechanisms: bayonet catch; and/or screwing; and/or clip connection.
- the pressure compensation device can be installed from an outside of the wall of the electrochemical system facing away from the interior or from an inside of the wall facing the interior.
- the bayonet lock is designed such that the pressure equalization device can only be detached and/or installed from a side facing the interior.
- the clip connection is formed from a polymer material or from a metallic material.
- part of the clip connection is made of a metallic material and part of the clip connection is made of a polymer material.
- the pressure compensation device is fixed to the wall of the electrochemical system by a two-component connection.
- the pressure compensation device is fixed to the wall of the electrochemical system by a bayonet ring and a counter-element, for example a lock nut.
- the base element is preferably designed in one piece.
- the base element can be in several parts and for the different elements of the base element to be connected to one another in a non-positive and/or positive and/or cohesive manner.
- the base element comprises a central section for receiving at least one component of the sealing device and/or that the base element comprises an outer ring surrounding the central section for supporting the base element on the adapter section of the base element and/or for storing the sealing device on the base element.
- the base element preferably comprises a central section and an outer ring surrounding the central section at a distance, the central section and the outer ring being connected to one another by means of one or more ribs of the base element.
- the pressure equalization device comprises a dehumidifying device which is arranged in particular in the interior of the pressure equalization device and/or comprises a hygroscopic material.
- the pressure compensation device additionally or alternatively has one or more of the following features or one or more of the following advantages: a connection between a wall of the electrochemical system and the pressure compensation device has a fluid tightness which lasts over the service life of the electrochemical system up to an opening of the Pressure compensation device remains essentially unchanged; and/or the pressure compensation device consists of elements that are easy to produce, so that it can be produced inexpensively and a number of pressure compensation devices can be integrated into an electrochemical system without incurring excessive costs; and/or a fluid exchange between the interior of the pressure equalization device and the environment of the pressure equalization device in the closed state of the pressure equalization device is minimized; and/or the pressure equalization device has a pressure-independent width and/or a pressure-independent cross-section perpendicular to the opening direction and/or the pressure equalization device can be opened multiple times without being destroyed, whereby in particular an end-of-line test can be carried out.
- the invention also relates to an electrochemical system.
- the invention is based on the object of providing an electrochemical system in which, when a critical Pressure in an interior of the electrochemical system, a pressure equalization with an environment of the electrochemical system can be brought about and which is as simple as possible to produce.
- the electrochemical system comprises one or more pressure compensation devices according to the invention, wherein the one or more pressure compensation devices are preferably fixed on and/or in a wall of the electrochemical system, in particular in a form-fitting and/or force-fitting and/or cohesive manner.
- the electrochemical system according to the invention preferably has one or more of the features mentioned in connection with the pressure equalization device according to the invention and/or one or more of the advantages mentioned in connection with the pressure equalization device according to the invention.
- the one or more pressure compensation devices are fixed as follows on and/or in the housing wall of the electrochemical system: by means of a bayonet lock; and/or by means of a screw connection; and/or by means of a clip connection.
- FIG. 1 shows a schematic perspective view of an embodiment of a pressure equalization device in a wall of an electrochemical system, wherein the pressure equalization device can be used to equalize pressure between an interior of the electrochemical system and an environment in the event of excess pressure within a housing of the electrochemical system;
- FIG. 2 shows a schematic perspective representation of the pressure equalization device from FIG. 1 from below, wherein a side of a base element facing the interior can be seen;
- FIGS. 1 and 2 shows a schematic plan view of the pressure compensation device from FIGS. 1 and 2;
- FIG. 4 shows a schematic sectional illustration of the pressure equalization device from FIGS. 1 to 3 along a plane labeled IV in FIG. 3;
- FIG. 5 shows a schematic perspective view of the sectional view from FIG. 4;
- FIG. 6 shows an enlarged section of that labeled VI in FIG.
- Fig. 7 shows a schematic perspective representation of a connecting device of the pressure compensation device from Figs. 1 to 6, by means of which the sealing device and the base element of the pressure compensation device are connected to one another in a sealed manner in the closed state;
- FIG. 8 shows a schematic side view of the connecting device from FIG. 7, in which a three-point mount of a receiving element can be seen, in which a spring element of the connecting device is received;
- FIG. 9 shows a diagram in which an opening pressure of the pressure compensation device is shown as a function of a spring force of the spring element of the connecting device
- FIG. 10 shows a schematic representation of an electrochemical system which comprises a plurality of pressure equalization devices
- FIG. 11 shows a schematic perspective representation of an alternative embodiment of a sealing device, which is produced in a multi-stage injection molding process
- FIG. 12 shows a schematic perspective representation of the sealing device from FIG. 11, looking at an underside of the sealing device;
- FIG. 13 is a plan view of the sealing device of FIG. 11;
- FIG. 14 shows a schematic section through the sealing device from FIG. 11 along the line XIV-XIV in FIG. 13;
- FIG. 15 shows an exploded view of the sealing device from FIG. 11; 16 shows a schematic perspective representation of a further alternative embodiment of a sealing device, which is produced in a multi-stage injection molding process;
- FIG. 17 shows a schematic perspective representation of the sealing device from FIG. 16, looking at an underside of the sealing device;
- FIG. 18 is a plan view of the sealing device of FIG. 16;
- FIG. 19 shows a schematic section through the sealing device from FIG. 16 along the line XIX-XIX in FIG. 18;
- FIG. 20 shows an exploded view of the sealing device from FIG. 16.
- FIGS. 1 to 9 show an embodiment of a pressure equalization device, denoted as a whole by 100, which is fixed on and/or in a wall 102 of an electrochemical system 104, which is not graphically shown as a whole in FIGS.
- the electrochemical system 104 is a battery store, for example.
- the electrochemical system 104 is particularly suitable for use in vehicles.
- the electrochemical system 104 preferably includes a plurality of electrochemical cells, which in particular include batteries, for example lithium-ion batteries.
- the electrochemical system 104 comprises one or more pressure compensation devices 100 .
- the pressure compensation device 100 is shown in a closed state in all figures.
- Pressure equalization device 100 preferably serves to equalize pressure between an interior space 106 of pressure equalization device 100 and/or electrochemical system 104 and an environment 108 of pressure equalization device 100.
- the pressure compensation device 100 comprises a base element 110, a sealing device 112 and a connecting device 114.
- Base element 110 is preferably used to stabilize and/or fix pressure equalization device 100.
- base element 110 comprises an outer ring 116 that is at least approximately hollow-cylindrical and that, when pressure equalization device 100 is in the installed state, rests on a side of wall 102 that faces away from interior space 106 and/or forms a guide for fluid flowing out of the interior space 106 when the pressure compensation device 100 is in the open state.
- the pressure equalization device 100 is at least approximately circular in the present case.
- the pressure compensation device 100 is at least approximately oval or rectangular in cross section taken perpendicular to the opening direction 144 .
- a width and/or diameter of an opening channel surrounded by base element 110 of pressure equalization device 100 in a plane arranged perpendicular to the opening direction is greater than one by a factor of three or more, in particular by a factor of five or more Extension of the pressure compensation device 100 in a direction running parallel to the opening direction 144 .
- the base element 110 preferably comprises a central section 120, which serves in particular to accommodate and/or stabilize the sealing device 112 and/or connecting device 114.
- outer ring 116 is connected to the central section 120 by ribs 124 extending in radial directions with respect to the central axis 118 .
- the ribs 124 each form a protection against accidental contact.
- the central axis 118 and the opening direction 144 of the pressure compensation device 100 are preferably arranged at least approximately parallel to one another.
- Outer ring 116 preferably has an outer section 126, which bears against the outside of wall 102, facing away from interior space 106, and/or a support section 128, which in particular forms a passage through a pressure equalization opening 130 in wall 102 of electrochemical system 104.
- the ribs 124 extend radially inwards from the support section 128 .
- the base element 110 preferably has an adapter section 132 which is arranged radially on the outside relative to the outer ring 116 with respect to the central axis 118 of the pressure compensation device 100 .
- the adapter section 132 serves in particular to connect the base element 110 to the wall 102 and/or to seal the connection in a fluid-tight manner.
- the base element 110 has a sealing ring 134 which is arranged in a receiving groove provided for this purpose between the adapter section 132 and the outer ring 116 and in particular forms a fluid-tight seal between the wall 102 and the base element 110 .
- the sealing ring 134 is preferably a molded seal, for example an O-ring.
- the adapter section 132 has a fixing element for producing a bayonet lock, which is connected to a fixing element designed to complement it in the wall 102 of the electrochemical system 104 to form a bayonet lock (not shown in detail).
- the adapter section 132 is screwed to the wall 102 of the electrochemical system 104 .
- a bayonet ring can be connected to a counter-element, for example a lock nut.
- connection of the pressure compensation device 100 and the wall 102 is preferably made entirely of a polymer material or entirely of a metallic material.
- part of the connection between the pressure compensation device 100 and the wall 102 is formed from a polymer material and another part is formed from a metallic material.
- the pressure compensation device 100 is connected to the wall 102 of the electrochemical system 104 by means of a clip connection.
- the pressure compensation device 100 has a protective cover 136 which is connected to the adapter section 132 of the base element 110 in a form-fitting and/or non-positive manner, for example by means of a latching connection and/or clip connection.
- the protective cover 136 can be fixed to the adapter section 132 of the base element 110, for example, by a screw connection and/or by heat caulking and/or by a welded connection.
- the protective cover 136 serves in particular to protect and/or cover the pressure equalization device 100 on a side facing away from the interior space 106 .
- the sealing device 112 comprises a support plate 138 and a holding element 140 .
- the support plate 138 serves, for example, as a support for a membrane 142 and/or as a fluid resistance.
- the membrane 142 is cohesively fixed to the support plate 138 and/or a sealing ring 180 of the sealing device 112 by gluing and/or welding and/or overmolding.
- the membrane 142 can be fixed to the support plate 138 and/or the sealing ring 180 in a non-positive and/or positive manner, for example by clamping.
- the holding element 140 preferably extends away from the support plate 138 counter to an opening direction 144 of the pressure compensation device 100 .
- the holding element 140 is a pin 146.
- the base element 110 and the sealing device 112 are connected to one another in a fluid-tight manner by means of the connecting device 114 when the pressure compensation device 100 is in a closed state.
- the connecting device 114 has a spring element 150 in the present case, the spring force of which acts in particular in a direction transverse to the opening direction 144 and/or to the central axis 118 of the pressure equalization device 100 .
- the spring force of spring element 150 acts in a direction running at least approximately perpendicularly to opening direction 144 and/or to central axis 118 of pressure equalization device 100 .
- sealing device 112 For example, retaining element 140 of sealing device 112 is fixed by spring element 150 in such a way that sealing device 112, for example a sealing element 152 of sealing device 112, rests against base element 110 and/or base element 110 at an end of base element 110 that faces away from interior space 106 is pressed.
- the spring element 150 is preferably a leaf spring 154 and/or a shaped spring 156.
- the spring element 150 is at least approximately U-shaped in a cross section taken parallel to the opening direction 144 of the pressure compensation device 100 .
- the spring element 150 has two legs 158 which extend away from a connecting section 160 of the spring element 150 in directions pointing away from the interior space 106 .
- a main extension The plane of connecting section 160 is preferably arranged at least approximately perpendicularly to opening direction 144 of pressure equalization device 100.
- the spring element 150 is arranged rotated by 180° compared to the embodiment shown in FIGS.
- a holding element of the base element 110 is fixed in the closed state of the pressure compensation device 100 between the legs of the spring element 150 (not shown in the drawing).
- spring element 150 is accommodated in and/or by a receiving element 162 of connecting device 114 in particular for stabilizing and/or fixing spring element 150 .
- the receiving element 162 is, for example, a receiving shoe.
- the receiving element 162 has an at least approximately trough-shaped sealing section 164 and/or a counter-holding section 166.
- the counter-holding section 166 is arranged in an area surrounded by the sealing section 164 .
- the sealing section 164 of the receiving element 162 is preferably received in a sealing manner by the central section 120 in the closed state of the pressure compensation device 100 .
- the receiving element 162 has at least approximately a rectangular shape in a cross section taken perpendicularly to the central axis 118 of the pressure compensation device 100 .
- the receiving element 162 is preferably connected to the central section 120 of the base element 110 in a form-fitting and/or force-fitting manner and/or with a material connection.
- the receiving element 162 is clipped into an opening formed by the central section 120 .
- the receiving element 162 has one or more, here several, punctiform or linear contact regions 168 which are in direct contact with the spring element 150 and/or on which the spring element 150 rests directly.
- areas of the receiving element 162 arranged adjacent to the contact areas 168 are arranged at a distance from the spring element 150 .
- the counter-holding section 166 has three contact areas 168, one of the contact areas 168 extending on a side of the counter-holding section 166 facing the interior space 106 from a base body of the counter-holding section 166 in the direction of the interior space 106.
- the two further contact areas 168 extend, in particular, laterally away from the base body of counterholding section 166 and/or along radial directions with respect to central axis 118 of pressure equalization device 100.
- the contact areas 168 are formed, for example, by bulges and/or projections in the receiving element 162 . It can be advantageous if the sealing section 164 has a plurality of contact areas 168, in this case two, which extend away from a base body of the sealing section 164 in the direction of the counterholding section 166 on a side of the sealing section 164 facing away from the interior space 106.
- the connecting section 160 of the spring element 150 is preferably accommodated and/or fixed between contact areas 168 of the counter-holding section 166 and contact areas 168 of the sealing section 164 of the receiving element 162 .
- legs 158 of the spring element 150 are and/or are held spaced apart and/or pressed outwards by contact regions 168 of the counter-holding section 166 .
- the spring element 150 has a retaining element 170 on each leg 158 at the ends facing away from the interior space 106 .
- the spring element 150 has in particular projections which protrude inwards and by means of which the holding element 140 of the sealing device 112 is fixed.
- the retaining elements 170 are latching projections 172.
- the retaining elements 170 engage in one or more retaining recesses 174 of the retaining element 140 when the pressure compensation device 100 is in the closed state.
- the one or more holding depressions 174 adjoin one or more holding elevations 176 in particular on a side of the holding element 140 facing away from the interior 106 .
- the one or more retaining elevations 176 are, for example, retaining lugs and/or cams. It can be provided that exactly one holding recess 174 is formed around the holding element 140 of the sealing device 112 along a circumferential direction.
- the holding element 140 has a plurality of holding depressions 174 .
- the holding element 140 of the sealing device 112 has exactly one holding elevation 176 running around in the circumferential direction.
- the holding element 140 has a plurality of holding elevations 176 .
- the legs 158 of the spring element 150 encompass the holding element 140.
- the connecting device 114 in the present case has a further spring element 178, which in the present case is a compression spring in the form of a spiral spring.
- the spring force of the additional spring element 178 preferably acts transversely, in this case at least approximately perpendicularly, to the spring force of spring element 150.
- the further spring element 178 is preferably used to accelerate an opening of the pressure compensation device 100 as soon as a transition from the closed state to the open state has begun.
- the further spring element 178 can form a complete and/or immediate opening of the pressure compensation device 100 over its entire width and/or its entire cross section. It can be advantageous if the further spring element 178 surrounds the holding element 140, in particular coaxially.
- the further spring element 178 is preferably in a compressed state.
- sealing device 112 When a critical pressure in interior space 106 of pressure-equalizing device 100 is exceeded, sealing device 112 is pressed in particular in opening direction 114 in such a way that legs 158 of spring element 150 are pressed radially outwards and latching occurs between retaining element 140 of sealing device 112 and spring element 150 of the Connecting device 114 is released.
- the further spring element 178 in particular moves from the compressed state into a relaxed state and a fluid-tight connection between the sealing device 112 and the base element 110 is released.
- the pressure equalization device 100 reaches the open state in particular as a result of the release of the connection between the spring element 150 and the holding element 140 . As a result, fluid can flow out of the interior 106 into the surroundings 108 of the pressure compensation device 100 .
- the opening of the pressure compensation device 100 is preferably irreversible.
- the retaining elements 170 of the spring element 150 form stops for a movement of the sealing device 112 against the opening direction 144 of the pressure compensation device 100 when the pressure compensation device 100 is in the open state. The pressure compensation device 100 is thereby held in the open state.
- the pressure compensation device 100 preferably comprises a monitoring device which monitors an opening process Pressure compensation device 100 is used.
- the monitoring device in the present case includes a magnet and a sensor element designed as a Hall sensor.
- the magnet is arranged in a recess between the support plate 138 and the membrane 142 that is configured coaxially to the central axis 118 of the pressure compensation device 100 .
- the Hall sensor is preferably arranged on an outside of the protective cover 136 facing away from the interior 106 .
- the Hall sensor can also be arranged outside of the pressure compensation device 100 if it is fixed relative to the sealing device 112 - regardless of whether the pressure compensation device 100 is in the open or in the closed state.
- the Hall sensor preferably detects the change in the magnetic field of the magnet.
- the pressure compensation device 100 includes a dehumidifying device for dehumidifying the air.
- the dehumidifying device is formed, for example, entirely or in part by the membrane 142, into which hygroscopic material is introduced and/or on which hygroscopic material is applied.
- the dehumidifying device can also be designed entirely or in part as an exchangeable element.
- the change element is designed in particular as an exchangeable exchangeable cylinder, in which a hygroscopic material, for example silica gel, is filled.
- one or more EMC protection elements can be provided.
- the protective cover 136 comprises an electrically insulating material, for example in the form of a protective layer, or is formed from an electrically insulating material.
- the protective cover 136 thus comprises a contact protection element or forms a contact protection element.
- the critical pressure preferably corresponds to an opening pressure of the pressure compensation device 100. This can be set by the shape and material strength of the spring element 150.
- a ratio of a length of the spring element 150 parallel to the opening direction 144 to an average material thickness of the spring element 150 is approximately 4: 1 or more, in particular approximately 10: 1 or more, for example approximately 20: 1 or is more.
- the ratio of the length of the spring element 150 parallel to the opening direction 144 to the average material thickness of the spring element 150 is approximately 100:1 or less, in particular approximately 90:1 or less, for example approximately 80:1 or less.
- the average material thickness of the spring element 150 is approximately 0.2 mm or more, in particular approximately 0.4 mm or more.
- the average material thickness of the spring element 150 is preferably approximately 1 mm or less, in particular approximately 0.8 mm or less.
- the length of the spring element 150 is preferably approximately 4 mm or more, in particular approximately 6 mm or more.
- the length of the spring element 150 is approximately 20 mm or less, in particular approximately 18 mm or less.
- a ratio of a minimum width of the spring element 150 perpendicular to the opening direction 144 to the average material thickness of the spring element 150 is preferably approximately 2:1 or more, in particular approximately 5:1 or more, for example approximately 10:1 or more.
- the ratio of the minimum width of the spring element 150 perpendicular to the opening direction 144 to the average material thickness of the spring element 150 is preferably approximately 50:1 or less, in particular approximately 45:1 or less, for example approximately 40:1 or less.
- the minimum width of the spring element 150 is approximately 2 mm or more, in particular approximately 4 mm or more.
- the minimum width of the spring element 150 is approximately 10 mm or less, in particular approximately 8 mm or less.
- the minimum width of the spring element 150 is preferably a distance between two retaining elements 170 in a direction perpendicular to the opening direction 144 .
- the minimum width of the spring element 150 can be a minimum diameter of the spring element 150 .
- the sealing device 112 has a sealing ring 180 which is ring-shaped and/or has an opening for accommodating the membrane 142.
- the sealing ring 180 On a side of the sealing ring 180 facing the interior 106 of the pressure equalization device 100, the sealing ring 180 in the present case has two thickenings and/or projections which are arranged at least approximately concentrically to one another and are annular.
- a ring-shaped groove is formed between the thickenings and/or projections, which forms a recess for receiving a fastening frame of the sealing element 152 of the sealing device 112 in a form-fitting and/or force-fitting and/or material-to-material manner.
- the sealing element 152 serves in particular to seal a connection between the sealing device 112 and the base element 110 in the closed state of the pressure compensation device 100.
- the sealing element 152 preferably protects the interior 106 from water and/or dust.
- the sealing element 152 preferably has at least one sealing lip 182 which, in the closed state of the pressure compensation device 100 , rests on the end of the base element 110 facing away from the interior 106 and/or is pressed against it.
- the at least one sealing lip 182 is preferably arranged on an underside of sealing element 152 facing interior space 106 and preferably extends away from a base body of sealing element 152 in a direction pointing towards interior space 106 .
- the sealing element 152 can be embodied as a molded seal and/or can be cohesively fixed to the support plate 138 and/or the sealing ring 180, for example by injection molding and/or vulcanizing.
- the sealing ring 180 and the sealing element 152 preferably engage in one another.
- the membrane 142 is preferably air-permeable and/or water-impermeable.
- the membrane 142 is open-pored and/or comprises a polytetrafluoroethylene (PTFE) material or is formed from it.
- PTFE polytetrafluoroethylene
- the open-pored design of the membrane 142 is used in particular for a ventilation function of the pressure compensation device 100.
- an element which has a breathing function is arranged in front of or behind in the opening direction 144 (not shown in the drawing).
- the membrane 142 comprises in particular a graphene material, for example graphene, or is formed from a graphene material, for example graphene.
- the membrane 142 comprises a fleece material or is formed from it.
- an opening pressure in the range of 30 mbar to 500 mbar can be adjusted by the shape and average material thickness of the spring element 150 .
- FIG. 9 shows a diagram of the opening pressure p 0 as a function of the spring force F in N.
- the spring force F in N is plotted on the x-axis.
- the opening pressure p is plotted on the y-axis in mbar.
- An at least approximately linear dependency of the opening pressure on the spring force can be seen.
- emergency degassing of the electrochemical system 104 can be carried out with the pressure compensation device 100 , with an opening pressure being able to be set by the design and spring force of the spring element 150 .
- a fine adjustment of the opening pressure of up to ⁇ 60 mbar is preferably possible.
- FIGS. 11 to 15 differs from the embodiment shown in FIGS. 1 to 9 essentially in that the sealing device 112 is produced in a multi-stage injection molding process, in particular a 2K injection molding process.
- the support plate 138, the sealing element 152, in particular the sealing lip 182, and a sealing ring 180 for accommodating the membrane 142 are preferably produced from plastic by two-stage or more than two-stage injection molding.
- the support plate 138 is produced by injection molding in a tool and that the sealing element 152, in particular the sealing lip 182, and the sealing ring 180 for receiving the membrane 142 are then injection molded onto the support plate 138.
- the membrane 142 can be introduced later or inserted into the mold and overmoulded.
- the sealing ring 180 is preferably produced by overmolding the membrane 142 .
- the support plate 138 preferably comprises a plurality of receiving areas 184 which are designed as indentations on an upper side of the support plate 138 facing away from the holding element 140 and serve to receive web elements 186 .
- the web elements 186 connect the sealing element 152 to the sealing ring 180 for receiving the membrane 142.
- the sealing element 152, the sealing ring 180 and the web elements 186 are thus in particular formed in one piece as a coherent component, preferably molded onto the support plate 138 in one injection molding step.
- the embodiment of the sealing device 112 shown in FIGS. 11 to 15 corresponds to the embodiment shown in FIGS. 1 to 9 in terms of structure and function, so that reference is made to the description above.
- An embodiment of a sealing device 112 shown in Figs. 16 to 20 differs from the embodiment shown in Figs. 11 to 16 essentially in that only the sealing element 152, in particular the sealing lip 182, and a sealing ring 180 for fixing the sealing element 152 are molded onto the support plate 138.
- Web elements or a sealing ring for accommodating the membrane are not provided. Rather, the membrane is fixed in some other way, for example by latching, clamping, gluing and/or welding, directly on the support plate 138 .
- This sealing device 112 is also produced in a multi-stage injection molding process, in particular a 2K injection molding process.
- the embodiment of the sealing device 112 shown in FIGS. 16 to 20 corresponds to the embodiment shown in FIGS. 11 to 16 in terms of structure and function, so that reference is made to the description above.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Measuring Fluid Pressure (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020210388.7A DE102020210388A1 (de) | 2020-08-14 | 2020-08-14 | Druckausgleichsvorrichtung und elektrochemisches System |
| PCT/EP2021/072481 WO2022034170A1 (de) | 2020-08-14 | 2021-08-12 | Druckausgleichsvorrichtung und elektrochemisches system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4196711A1 true EP4196711A1 (de) | 2023-06-21 |
Family
ID=77447917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21758705.4A Pending EP4196711A1 (de) | 2020-08-14 | 2021-08-12 | Druckausgleichsvorrichtung und elektrochemisches system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12366300B2 (de) |
| EP (1) | EP4196711A1 (de) |
| CN (1) | CN116113786A (de) |
| DE (1) | DE102020210388A1 (de) |
| WO (1) | WO2022034170A1 (de) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2599156B (en) * | 2020-09-28 | 2024-08-07 | Uk Pods Ltd | A closure assembly |
| DE102021125558A1 (de) | 2021-10-01 | 2023-04-06 | Woco Industrietechnik Gmbh | KFZ-Batterie-Druckausgleichsventil |
| DE102021129319A1 (de) | 2021-11-11 | 2023-05-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batterie |
| DE102022105951A1 (de) | 2022-03-15 | 2023-09-21 | Mann+Hummel Gmbh | Druckausgleichseinrichtung für ein Elektronikgehäuse |
| DE102022109065A1 (de) * | 2022-04-13 | 2023-10-19 | Mann+Hummel Gmbh | Druckausgleichsvorrichtung für ein Batteriegehäuse und Batteriegehäuse |
| JP7837399B2 (ja) * | 2022-04-27 | 2026-03-30 | 株式会社ニフコ | 調圧弁 |
| CN119173713A (zh) | 2022-05-13 | 2024-12-20 | 唐纳森公司 | 压力释放组件 |
| EP4325645A1 (de) * | 2022-08-19 | 2024-02-21 | MANN+HUMMEL GmbH | Entgasungseinheit mit segmentierter membran |
| DE102023100451A1 (de) * | 2023-01-10 | 2024-07-11 | Elringklinger Ag | Druckentlastungseinrichtung und Schließelement |
| DE102023102182A1 (de) * | 2023-01-30 | 2024-08-01 | Elringklinger Ag | Druckentlastungseinrichtung und Gehäuse |
| US12392417B2 (en) * | 2023-03-14 | 2025-08-19 | Ford Global Technologies, Llc | Multi-function valve assemblies |
| DE102023002551B3 (de) * | 2023-06-23 | 2024-06-13 | Mercedes-Benz Group AG | Gasleitelement, Gasableiteinheit und Batteriegehäuseeinheit für eine Batterie |
| KR102921019B1 (ko) * | 2023-08-10 | 2026-02-02 | (주)상아프론테크 | 열 폭주 지연 장치 |
| EP4510313A1 (de) * | 2023-08-16 | 2025-02-19 | HOPPECKE Systemtechnik GmbH | Batteriecontainer, system und fahrzeug |
| GB2641296A (en) * | 2024-05-24 | 2025-11-26 | Jaguar Land Rover Ltd | A pressure relief device for a vehicle |
| EP4675806A1 (de) | 2024-07-04 | 2026-01-07 | Newfrey LLC | Druckausgleichsvorrichtung für eine batterie |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011080325A1 (de) | 2011-08-03 | 2013-02-07 | Elringklinger Ag | Druckausgleichsvorrichtung für ein Gehäuse einer elektrochemischen Vorrichtung |
| DE102015214256A1 (de) | 2015-07-28 | 2017-02-02 | Bimed Teknik A.S. | Druckausgleichsvorrichtung |
| US12234928B2 (en) * | 2016-04-18 | 2025-02-25 | Michael Anthony Di Monte | Locking mechanism for sealing member of valve with bleeding opening |
| US20190128438A1 (en) * | 2016-04-29 | 2019-05-02 | Triton Valves Limited | A vent apparatus and a method thereof |
| DE102019100094A1 (de) | 2019-01-04 | 2020-07-09 | Mann+Hummel Gmbh | Entgasungseinheit und Elektronikgehäuse, insbesondere Batteriegehäuse |
| DE102019204859A1 (de) | 2019-04-04 | 2020-10-08 | Elringklinger Ag | Druckausgleichsvorrichtung und elektrochemisches System |
| DE102020111372A1 (de) * | 2020-04-27 | 2021-10-28 | Bayerische Motoren Werke Aktiengesellschaft | Batteriegehäuse mit Ventilvorrichtung, Batterie sowie Kraftfahrzeug |
-
2020
- 2020-08-14 DE DE102020210388.7A patent/DE102020210388A1/de active Pending
-
2021
- 2021-08-12 WO PCT/EP2021/072481 patent/WO2022034170A1/de not_active Ceased
- 2021-08-12 EP EP21758705.4A patent/EP4196711A1/de active Pending
- 2021-08-12 CN CN202180058121.XA patent/CN116113786A/zh active Pending
-
2023
- 2023-01-28 US US18/161,043 patent/US12366300B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US12366300B2 (en) | 2025-07-22 |
| WO2022034170A1 (de) | 2022-02-17 |
| DE102020210388A1 (de) | 2022-02-17 |
| US20230175602A1 (en) | 2023-06-08 |
| CN116113786A (zh) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022034170A1 (de) | Druckausgleichsvorrichtung und elektrochemisches system | |
| WO2021105052A1 (de) | Druckausgleichssystem und elektrochemisches system | |
| EP3813186A1 (de) | Ventil zum druckausgleich und/oder zur notentlüftung eines behälters, vorzugsweise eines gehäuses einer batterie von elektrofahrzeugen, sowie behälter mit einem solchen ventil | |
| DE102019112432B4 (de) | Entgasungseinheit und Elektronikgehäuse, insbesondere Batteriegehäuse | |
| DE102020113999B4 (de) | Entgasungseinheit und Elektronikgehäuse, insbesondere Batteriegehäuse | |
| DE102019204859A1 (de) | Druckausgleichsvorrichtung und elektrochemisches System | |
| DE102018221988A1 (de) | Batteriegehäuse zur Aufnahme eines Batteriemoduls, Batteriemodulanordnung, Kraftfahrzeug und Verfahren zum Einbringen eines Wärmeleitelements in ein Batteriegehäuse | |
| DE102013204087A1 (de) | Entgasungssystem für Batteriemodule | |
| DE102011080325A1 (de) | Druckausgleichsvorrichtung für ein Gehäuse einer elektrochemischen Vorrichtung | |
| WO2021204562A1 (de) | Ventilvorrichtung und elektrochemisches system | |
| DE102022107344A1 (de) | Entgasungseinheit und Gehäuse, insbesondere Batteriegehäuse | |
| DE102023106792A1 (de) | Notentgasungsventilvorrichtung | |
| EP3235049A1 (de) | Kühlplatte für batteriezelle als montageplatte | |
| DE102021123031A1 (de) | Entgasungseinheit und Elektronikgehäuse, insbesondere Batteriegehäuse, sowie Herstellverfahren für eine Entgasungseinheit | |
| DE102015106983A1 (de) | Fluidisches Sicherheitsventil und damit ausgestattete Batteriekomponente | |
| WO2023052582A1 (de) | Kfz-batterie-druckausgleichsventil | |
| EP2418708B1 (de) | Zuhalteelement für Batteriegehäuse | |
| DE102021123420A1 (de) | Notentgasungsventil | |
| DE102021200672A1 (de) | Ventilvorrichtung und elektrochemisches System | |
| EP2478577A1 (de) | Verschlussstopfenanordnung für einen akkumulator | |
| EP3686959A1 (de) | Gehäuse für batterien | |
| DE102014200194A1 (de) | Batteriesystem mit wenigstens einer Batteriezelle und einer Entgasungseinrichtung | |
| WO2023247530A1 (de) | Sicherheits-batteriesystem mit kontrollierter entgasungsfunktion | |
| EP4592570A1 (de) | Druckausgleichselement für behälter, vorzugsweise für batteriegehäuse von fahrzeugen | |
| DE102010015610A1 (de) | Dichtring mit Membranventil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20230216 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20250310 |