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
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/02—Sealings between relatively-stationary surfaces
  • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
  • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
  • F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
  • F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
  • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
• • 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

Definitions

• the invention relates to a sealing element for sealing a
• WO 2015/135541 Al relates to a seal for a hydraulic piston-cylinder arrangement.
• a seal is disclosed which is constructed in such a way that it is essentially U-shaped or V-shaped in the sealing direction and press sealing lips against the respective sealing surface to be sealed. The sealing lips move in a lever-like continuation against the respective sealing surface.
• elastomer seals made of silicone, EPDM or HMBR called, which are pre-stressed by their geometry in the installed state.
• a sealing element which has a static sealing lip.
• a sealing element has a base body with a sealing lip, a sealing contour having an extension being provided.
• a protuberance is formed on the prestressing element.
• the prestressing element can be represented by one or more plastic components.
• DE 10 2009 005 775 Al relates to a bearing sealing arrangement.
• This comprises a sealing ring and a race with at least one axially directed running surface, at least one first sealing lip being formed on the sealing ring for bearing against the axially directed running surface.
• the sealing ring has an arcuate extension, on the free end of which the first sealing lip is formed. By forming the first sealing lip, a contact force of the sealing lip can be metered well even with a comparatively stiff sealing material.
• DE 10 2009 022 109 Al has a rotating union with a smaller one
• the rotating union comprises a sealing device.
• the sealing device has a lamellar seal, the lamellas sealingly abutting the circumferential surface of a shaft and being compressible in the axial direction. Furthermore, the sealing device as
• Radial shaft seal can be equipped with a metallic sealing lip, which has a V-shaped profile within the contact area.
• a sealing element for sealing a battery cover for a battery with at least one deformable sealing lip which extends in the radial direction and whose radial extent to a contact surface exceeds a distance from the contact surface by a protrusion. At least one radially extending rib is formed on the at least one deformable sealing lip.
• the solution proposed according to the invention provides a sealing element which, as a static sealing element in large series production, compensates for larger component tolerances and maintains a largely constant maximum contact pressure at the sealing point.
• the at least one rib is formed on the side of the at least one sealing lip which, in the deformed state, assigns to the contact surface.
• This contact area is in particular an inside of a housing of a battery.
• the at least one rib on the at least one sealing lip is circumferential.
• the sealing element proposed according to the invention comprises at least one rib, which can be designed in different geometries.
• the at least one rib can be designed in a semicircle geometry such that the semicircle of the contact surface on which the seal is to be produced is opposite.
• the at least one rib can also have a square or triangular geometry, in the case of the triangle geometry the at least one rib has a tapered angular end.
• the at least one rib is designed in a semicircular geometry or in a quadrilateral or triangular geometry, a point contact can be achieved on the contact surface to be sealed or, if a semicircular geometry is used, a spherical contact can be achieved.
• the invention also relates to the use of the
• Sealing element on a battery the housing of which is sealed with a battery cover.
• the invention further relates to the use of the sealing element on a LeM48 V battery, [Lern Light Electrical Mobility].
• the sealing element proposed according to the invention can, in large-scale production, tolerances that usually occur between the individual components, i.e. between battery cases and
• Sealing element proposed according to the invention can be at high
• the solution proposed according to the invention maintains a constant maximum contact pressure between the sealing element and the contact surface: at the same time, larger manufacturing tolerances can be compensated for. There is a cost advantage through a coarser dimensioned component design and assembly design. Depending on the number of ribs that can be formed on the sealing element proposed according to the invention or on the sealing lips thereof, multiple redundancy can be achieved.
• the sealing element proposed according to the invention generally offers an improvement in the robustness of static ones acting in the radial direction
• Lamellar seals compared to solutions according to the prior art.
• the sealing element is a safety element when battery cells are degassed.
• the proposed solution ensures a compromise on the safety requirement of maintaining a minimum opening pressure on the one hand and on the other hand a functioning requirement with regard to the maximum contact pressure for producing a high-quality contact pressure.
• Sealing element and a component for example a housing on which a battery cover is to be mounted,
• FIG. 2 shows the qualitative course of a maximum contact pressure at a sealing point
• FIG. 2.1 a first deflection of a sealing lip
• FIG. 2.2 shows a second deflection of a sealing lip
• Figure 3 shows the qualitative course of the maximum contact pressure p
• FIG. 3.1 shows a sealing lip contour with a first rib and a second indicated rib
• FIG. 4 shows a battery housing
• FIG. 4.1 shows a longitudinal section through the battery housing according to FIG. 4,
• Figure 4.2 shows a detailed representation of the sealing element between
• Figure 5 is a plan view of the battery case.
• FIG. 1 shows that a battery cover 10 is provided with a sealing element 14.
• the sealing element 14 is on a
• the sealing element 14 comprises a first sealing lip 18 and a second sealing lip 20.
• the two sealing lips 18 and 20 run according to a radial extension 22 in the radial direction with respect to the contact surface 12.
• the sealing element 14 shown in FIG. 1 is mounted in the mounting direction 30, ie inserted into the battery housing 26, so that the two extend in the radial direction
• Sealing lips 18 and 20 experience a deformation, since these are elastically deformable.
• the radial extent 22 of the two sealing lips 18, 20 is dimensioned such that they each have an overhang 24 which is a distance 32 between the sealing element 14 and the contact surface 28 of the
• FIGS. 2, 2.1 and 2.2 A qualitative course of the contact pressure of the sealing element 14 is plotted in FIGS. 2, 2.1 and 2.2, in each case compared to the degree of deformation of one of the sealing lips 18, 20.
• first deflection 48 there is a point 44 between the tip of the first sealing lip 18 and the contact surface 28 of the battery housing 26, which extends essentially in the vertical direction.
• the state of deformation 42 of the first sealing lip 18 shown in FIG. 2.1 corresponds to a contact pressure maximum 38, which the contact pressure curve 36, plotted over the projection 24, reaches.
• Deformation state of the first sealing lip 18 corresponds.
• the first sealing lip 18 is in a deformation state 42, which corresponds to a second deflection 50.
• FIG. 2 shows that there is between the contact pressure maximum 38, cf. first deflection 48 of the first sealing lip 18 and that shown in FIG. 2.2 State of the second deflection 50 of the first sealing lip 18 leads to a strong drop in contact pressure 64. This deteriorates the quality of the sealing function.
• FIGS. 3 and 3.1 show how the contact pressure p runs between the sealing element 14 and the contact surface 28 of the battery housing 26 to be sealed.
• the first sealing lip 18 is provided with a sealing lip contour 52 which has either a first rib 54 or a first and a second rib 54, 56.
• the second rib 56 are located on the outside 68 of the first sealing lip 18, while an inside 66 of the first sealing lip 18 is free of contours.
• the first rib 54 which is located on the outside 68 of the first sealing lip 18, lies in point contact 70 against the contact surface 28 of the battery housing 26 to be sealed.
• the contact pressure maximum 38 of the contact pressure p is set in accordance with the diagram.
• the contact pressure maximum 38 is also at further deformation, i.e.
• the ribs 54, 56 can also have a rectangular geometry 60 or a triangle geometry 62 or - as shown - a semicircular geometry 58 be executed.
• the point system 70 is created, in the case of the triangle geometry 62 of the first rib 54, the point system 70 is also created. If the first rib 54 or the second rib 56 is in a rectangular geometry 60 molded on, a sealing surface 74 is formed, which, however, has a significantly smaller vertical extent compared to the illustration according to FIG. 2.2.
• redundancy with regard to the maintenance of the contact pressure maximum 38 can be achieved by several sealing lips 18, 20 reaching the contact surface 28 of the battery housing 26 to be sealed in point contact 70. This shifts the location of the seal, but it stays that way
• the sealing element 14 proposed according to the invention can maintain a contact pressure p that enables sealing, which is in the vicinity of the contact pressure maximum 38.
• sealing elements 18, 20 are formed, redundancy can be set, so that the contact pressure maximum 38 is maintained at all times.
• the sealing element 14 proposed according to the invention is considerably improved in terms of its robustness as a statically radially acting lamellar seal.
• FIG. 4 shows a battery housing 26, which is shown here by way of example for a LeM48 V battery and by means of the device according to the invention
• FIG. 4.1 shows a longitudinal section 80 through the battery housing 26 as shown in Figure 4.
• Figure 4.2 shows an enlarged view of an LSR seal 16, which is between the battery housing 26 and one on the underside of the
• Battery cover 10 trained contact surface 78 is arranged.
• Battery cover 10 trained contact surface 78 is arranged.
• 4.2 also shows the first and second sealing lips 18, 20 of the
• the sealing element 14 is designed as a circumferential LSR seal 16.
• Figure 5 shows that the LSR seal 16 on an inside, i.e. the contact surface 28 of the
• Battery housing 26 rests sealingly.
• the battery housing 26 has a housing contour 82 which is essentially rectangular, but also comprises oval sections, in particular on the long side.
• the first and second sealing lips 18 (not shown in FIG. 5) with the ribs 54 and 56 formed therein lie on the inside of the battery housing 26 in a sealing manner on the contact surface 28.

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• 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)
• Sealing Battery Cases Or Jackets (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=67620418

Family Applications (1)

Country Status (4)

Family Cites Families (9)

• 2018
  • 2018-08-07 DE DE102018213211.9A patent/DE102018213211A1/de active Pending
• 2019
  • 2019-08-06 EP EP19753000.9A patent/EP3833893A1/de active Pending
  • 2019-08-06 WO PCT/EP2019/071063 patent/WO2020030614A1/de unknown
  • 2019-08-06 CN CN201980065973.4A patent/CN112805492B/zh active Active

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