EP4244928A1 - Batteriezellverschlussleiste für eine batteriezelle in prismatischer oder in pouch-bauweise, sowie batteriezelle - Google Patents
Batteriezellverschlussleiste für eine batteriezelle in prismatischer oder in pouch-bauweise, sowie batteriezelleInfo
- Publication number
- EP4244928A1 EP4244928A1 EP21801552.7A EP21801552A EP4244928A1 EP 4244928 A1 EP4244928 A1 EP 4244928A1 EP 21801552 A EP21801552 A EP 21801552A EP 4244928 A1 EP4244928 A1 EP 4244928A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery cell
- closure strip
- cell closure
- battery
- base body
- 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.)
- Withdrawn
Links
- 238000007872 degassing Methods 0.000 claims abstract description 74
- 238000007789 sealing Methods 0.000 claims abstract description 69
- 230000009172 bursting Effects 0.000 claims abstract description 53
- 239000012528 membrane Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000002360 explosive Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01M50/308—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
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—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
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
- H01M50/645—Plugs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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
- Battery cell closure strip for a battery cell in prismatic or pouch design, as well as battery cell
- the invention relates to a battery cell closure strip for a battery cell in a prismatic or pouch design and a battery cell.
- Electric vehicle traction batteries currently consist of a large number of lithium battery cells. Such battery cells are increasingly being manufactured in the form of so-called prismatic battery cells and in the form of pouch battery cells, especially since these designs have the most economically interesting development potential. These designs are characterized by low mass and low manufacturing costs. A typical traction battery with an output voltage of 800 V and a cell voltage of 3.7 V therefore has at least 1216 cells. As the smallest components of the traction battery, the lithium battery cells are wear parts and represent potential sources of danger when operating electric vehicles. In contrast to the round cells surrounded by rigid metal housings, or to some extent also with prismatic cells, the pouch cell cannot compensate for any significant pressure build-up. Even relatively low internal pressure conditions allow the very thin shell made of an aluminum-thermoplastic compound to inflate.
- a so-called degassing valve is often used in lithium battery cells, through which the gas can escape from the battery cell into the environment.
- a degassing valve is known, for example, from PCT/DE98/02218.
- the operational use of lithium battery cells can also lead to so-called "thermal runaway", in which the battery cell very quickly becomes very warm when a temperature limit is exceeded and several hundred degrees are reached inexorably within milliseconds be able.
- the heat triggers a chemical reaction inside the cell, in which some combustible and toxic gases such as CO2, methane (CH4), hydrofluoric acid (HF), hydrogen (H2), nitrogen oxides NOx, N2O, other hydrocarbons (ethene, ethine, benzene, etc.) ) and oxygen are released.
- CO2 methane
- HF hydrofluoric acid
- H2 hydrogen
- nitrogen oxides NOx, N2O other hydrocarbons (ethene, ethine, benzene, etc.) ) and oxygen are released.
- the battery cell catches fire or explodes. Possible causes are an internal or external short circuit as well as excessive currents when charging/discharging. If, as a result, other battery cells of the
- the battery cell closure strip according to the invention is particularly suitable for a battery cell with a prismatic or pouch design.
- the battery closure row serves as part of the housing of the individual battery cell and can be bonded to the rest of the housing in a gas-tight manner, welded in a gas-tight manner or connected in a gas-tight manner to the rest of the housing of the battery cell in some other way.
- the battery cell closure strip comprises a base body with a degassing channel which extends along the vertical axis of the battery cell closure strip from an inside of the battery cell closure strip to the outside of the battery cell closure strip. The vertical axis of the battery closure row is aligned vertically when the battery cell closure strip is in use.
- the degassing channel is closed during regular operation of the battery cell sealing strip by means of a media-actuated sealing element, which only closes the degassing channel when a predefined atmospheric response pressure or limit pressure P
- the limit pressure P Hm can be, for example, between 80 and 120 mbar above atmospheric pressure.
- the battery cell closure strip also includes an emergency degassing channel, which has an opening cross section that is at least 10 times larger than the degassing channel and which is closed by means of a bursting valve, which opens when a specified (target) bursting pressure P k nt is reached or exceeded with P crit > Piim releases the emergency degassing channel, preferably upwards in the direction of the vertical axis.
- the battery cell sealing strip thus ensures degassing of the battery cell provided with the battery sealing strip in the event of unavoidable gas formation inside.
- the sealing element efficiently prevents the undesired ingress of gases and moisture, which could lead to the impairment of the capacity of the battery cells or to their damage or even destruction.
- the activation pressure of the bursting valve can be 1.5 bar, for example.
- the bursting valve includes an explosive cover.
- an explosive cap is understood to be a cap that is blown off from its sealing seat on the battery closure strip when the bursting valve is activated be glued, welded or press-fitted to the battery cell closure strip.
- the explosive cover can consist of a rubber-elastic deformable material.
- the explosive cover is preferably arranged with a press fit in or on the battery closure strip.
- the explosive cover can be arranged in particular on a retaining flange of the base body and can encompass it circumferentially, preferably on both sides. This simplifies the assembly of the battery closure row and enables the emergency vent opening to be reliably sealed while the bursting valve still responds sufficiently reliably.
- the bursting valve comprises a so-called bursting membrane.
- a particularly precise response behavior of the bursting valve can be achieved by such a bursting membrane.
- Such bursting membranes are also available on the market at low cost and are easy to assemble on the base body.
- a cutting element in particular a pneumatically actuated cutting piston, is movably mounted on the base body of the battery cell closure strip.
- the bursting membrane can be perforated particularly reliably by the cutting element during operational use of the battery cell closure strip and when a predefined internal (target) bursting pressure P crit is reached.
- the cutting element can in particular consist of plastic or the same material as the rest of the base body.
- the cutting element is preferably mounted on the base body in a translationally displaceable manner.
- the sealing element preferably has a, preferably circumferential, sealing lip which, in a sealing position closing the degassing channel on a sealing surface of the battery cell sealing strip, can be moved into an open position releasing the degassing channel, in which the sealing lip is arranged at least in sections at a distance from the sealing surface of the battery cell sealing strip .
- sealing elements are well known and have a good response to pressure changes.
- the sealing element is preferably arranged in a seal holding structure, in particular in the form of a recess, held in the battery cell sealing strip.
- the seal holding structure is preferably formed on an extension of the base body, which extends away from the rest of the base body in an axial direction to the vertical axis of the battery cell closure strip.
- the seal holding structure and thus the sealing element can thus be spaced apart from the bursting valve, which means that the battery cell closure element can be designed particularly compact in terms of width and depth. This is advantageous in view of the very limited installation space in mobility applications.
- the bursting valve and the sealing element are therefore preferably offset relative to one another in the direction of the vertical axis.
- the seal holding structure can be designed in particular as a recess in the base body, which extends transversely, preferably orthogonally, to the vertical axis of the battery cell closure strip.
- a particularly flat design of the battery cell closure strip is possible. This is particularly advantageous for pouch battery cells.
- the battery cell closure strip very particularly preferably has the terminals or bushings for the terminals, i.e. the electrical pole contact pins or lugs, of the battery cell. Reliable guidance, splinting and sealing of the terminals can be achieved by means of the battery cell closure strip.
- the terminals can be glued to the base body, for example, or can be embedded in the material of the base body in a gas-tight manner without the use of any further adhesive. This can simplify the assembly of the battery cell.
- the battery cell closure strip particularly preferably has a filling opening for the battery cell, which can be closed by means of a closure element, in particular a conical or cylindrical plug, preferably mounted in the battery cell closure strip.
- a closure element in particular a conical or cylindrical plug
- the main body of the battery cell closure strip can consist of a plastic, in particular a thermoplastic.
- the battery closure strip can be manufactured in a cost-effective manner. A return to the material cycle is also simplified.
- a first battery cell according to the invention is designed as a prismatic or a pouch battery cell, the housing of which comprises a battery cell closure strip according to one of the preceding claims.
- the battery cell can in particular be a lithium battery cell and is particularly suitable for the traction battery of an electric vehicle. It goes without saying that the battery cell has the battery cell sealing strip on its upper side in the perpendicular direction in the installed state.
- Another battery cell according to the invention comprising a prismatic housing, is characterized in that the housing is closed on the top by means of a battery cell sealing strip, the battery sealing strip having a base body with a degassing channel that extends from an inside of the battery cell sealing strip to the outside of the battery cell sealing strip, the degassing channel in the Controlled operation of the battery cell closure strip is closed by means of a media-actuated sealing element, which opens the degassing channel when a predefined limit pressure P is reached or exceeded im releases in the battery cell and when a critical bursting pressure P knt with Pknt > Plim in the battery cell is reached or exceeded, the battery cell closure strip is separated from the rest of the housing, in particular completely ejected, in order to enable emergency degassing of the battery cell.
- an emergency degassing channel is created by detaching the battery sealing strip.
- the emergency degassing opening or the emergency degassing channel preferably has an opening cross section A1 through which flow can flow that is at least 10 times greater than that of the degassing channel.
- a directed Degassing and possibly flame formation along the vertical axis allows upwards.
- FIG. 1 shows a perspective view of a first embodiment of a battery sealing strip according to the invention with an integrated degassing channel and an emergency degassing channel;
- FIG. 2 shows an enlarged detail of the battery closure strip according to FIG. 1 in the area of the degassing channel with the sealing element removed;
- FIG. 3 shows the battery sealing strip according to FIG. 1 in a detail representation of a section of the media-actuated sealing element of the degassing channel;
- FIG. 4 shows a further exemplary embodiment of a battery sealing strip, in which the bursting valve of the emergency degassing channel and the sealing element of the degassing channel are arranged offset in relation to one another in an axial direction relative to the vertical axis of the battery sealing strip;
- FIG. 5 shows the battery closure strip according to FIG. 4 in a schematic sectional view
- FIG. 6 shows a further exemplary embodiment of a battery sealing strip, in which the emergency degassing channel is closed by means of a bursting membrane, the terminals being firmly connected to the base body of the battery cell sealing strip;
- FIG. 7 shows a further exemplary embodiment of a battery closure strip, in which the emergency degassing channel is closed by means of a bursting membrane;
- FIG. 8 shows a prismatic battery cell (without content) with a battery closure line, which has a cutting piston for pressure-controlled perforation of the bursting membrane, in a sectional view;
- Figs. 9a, 9b a pouch battery cell (Fig. 9a) with a
- Battery closure line which has a degassing channel according to one of the preceding Figs. 1 to 8 and the through
- FIG. 1 shows a first embodiment of a battery closure strip 10 for a battery cell in a prismatic or pouch design.
- Such battery cells are used in particular in traction batteries of electric vehicles due to their compact, lightweight design, but have the disadvantage of a housing that is not very pressure-resistant with respect to gas formation inside the battery cell.
- the battery closure strip 10 has a base body 12 with an inside 14 and an outside 16 . in the installed state, the inside 14 faces the inside of the housing of the battery cell.
- the battery closure strip 10 can have the terminals 18, ie the electrical battery poles of the battery cell, or at least be provided with a through-hole 20 for the terminals 18. In the former case, the terminals 18 can be embedded in the material of the base body 12, glued in place or held in a sealed manner in some other way.
- the battery closure strip 10 has a degassing channel 22 which extends along the vertical axis V of the battery closure strip 10 from the inside 14 to the outside 16 of the battery closure strip 10 .
- the degassing channel 22 is provided with a valve 24 with a media-actuated sealing element 26 .
- the degassing channel 22 is sealed in a gas-tight manner by means of the sealing element 26 during normal operation of the battery cell sealing strip 10 .
- acting on the inside of the sealing element 26 is reached or exceeded A deformation of the sealing element 26 is brought about in the battery cell in such a way that the sealing element 26 fluidly releases the degassing channel 22 in order to thus enable degassing of the battery cell.
- the response pressure or limit pressure Piim of the sealing element 26 can be, for example, 0.1 bar (above atmospheric pressure).
- the battery cell closure strip 10 therefore also has an emergency degassing channel 28 .
- the emergency degassing channel 28 is formed separately from the degassing channel 22 in the base body 12 .
- the emergency degassing channel 28 is sealed gas-tight by means of a bursting valve 30 .
- the bursting valve 30 is designed in such a way that when it reaches or exceeds a bursting pressure P crit acting on the inside of the bursting valve 30 with P crit >P
- the bursting pressure P crit can be 1.5 bar, for example.
- the emergency degassing channel 28 has an opening cross section through which a flow can flow that is at least 10 times larger.
- the bursting valve 30 can comprise an explosive cover 32 or be formed by it.
- the explosive cover 32 is preferably made of plastic, for example a rubber-elastic deformable material.
- the main body 12 battery cell closure strip 10 has a peripheral connection surface 34 which serves to fasten the pouch-shaped or prismatic battery cell housing to the battery cell closure strip 10 in a gas-tight manner. This can be done by welding, gluing or in some other way familiar to a person skilled in the art.
- the base body 12 has a seal holding structure 36 for the sealing element 26 in the form of a recess, which is circular in this case by way of example.
- the recess is delimited all around by a wall 38 .
- the wall 38 can form a circumferential shoulder 40 which serves as a sealing surface for the sealing element 26 .
- the sealing element 26 is shown in the installed state.
- the sealing element 26 has a sealing lip 42 , which in this case is circumferential, for example, and which during regular operation of the battery cell strip 10 rests against the sealing surface in a prestressed, axial direction relative to the longitudinal axis L of the recess.
- the sealing element 26 can have a projection 44 with which it is supported in a direction axial to the longitudinal axis L on the base body 12 .
- the inside inlet 46 and the outside outlet 48 of the degassing channel 22 are clearly visible.
- the longitudinal axis L of the recess is arranged to run orthogonally with respect to the vertical axis V of the battery cell closure strip 10 . As a result, a sufficiently compact design for the battery cells relevant here can be realized with the battery closure strip 10 .
- FIGS. 1 to 3 explained embodiment differs essentially in the geometric position of the sealing element 26 relative to the bursting valve 30.
- the seal retaining structure 36 is formed on an extension 50 of the base body 12 which extends away from the rest of the base body 12 in an axial direction relative to the vertical axis V of the battery cell closure strip 10 .
- the sealing element 26 and the bursting valve 30 of the emergency degassing channel 28 are thus spaced apart from one another in the direction of the vertical axis V and arranged one above the other.
- the battery cell 100 has a (overall) prismatic housing shape.
- the battery cell closure strip 10 can, in particular, be connected to the rest of the housing 102 the battery cell 100 be welded.
- the explosive cover 32 can be arranged on a retaining flange 52 of the base body 12 and can encompass it circumferentially—preferably on both sides.
- the bursting membrane can be made of plastic, metal or a composite material.
- the bursting membrane offers the advantage of a particularly cost-effective and compact design.
- the opening cross section Ai of the emergency degassing channel 28 and the significantly smaller opening cross section A 2 of the degassing channel 22 are clearly visible.
- the battery cell closure strip 10 in all the embodiments explained here can have a filling opening 54 for filling the battery cell, which can be closed by means of a closure element 56, in particular in the form of a cylindrical plug, which is preferably movably mounted on the battery cell closure strip 10 .
- the terminals 18 can be firmly connected to the base body 12 and form a structural unit that can be handled together with it.
- the seal holding structure 36 and the sealing element 26 arranged therein can be arranged at the edge of the battery cell closure strip 10 .
- the cutting piston has a cutting edge 60 assigned to the bursting membrane 53 .
- the base body 12 of the battery cell closure strip 10 explained above can in principle consist of a plastic, in particular a thermoplastic, or of metal, in particular aluminum.
- Figs. 9a shows a pouch battery cell 100 with a further battery cell closure strip 10.
- the battery closure strip 10 can, for example, according to one of the embodiments according to FIGS. 1 to 8 must be executed.
- the pouch-shaped housing 102 is attached to the peripheral connection surface 34 of the base body 12 of the battery cell closure strip 10, in particular welded or glued to it.
- the base body 12 can have a degassing channel and an emergency degassing channel in a manner corresponding to the above exemplary embodiments.
- the battery cell closure strip does not have an integrated emergency degassing channel. Reaching or exceeding the bursting pressure P k nt with P crit > Piim in the battery cell 100, according to FIG the vertical axis V upwardly open emergency degassing channel 28, via which the emergency degassing of the battery cell 102 is made possible.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020214132.0A DE102020214132B4 (de) | 2020-11-10 | 2020-11-10 | Batteriezellverschlussleiste für eine Batteriezelle in prismatischer oder in Pouch-Bauweise, sowie Batteriezelle |
| PCT/EP2021/080165 WO2022101035A1 (de) | 2020-11-10 | 2021-10-29 | Batteriezellverschlussleiste für eine batteriezelle in prismatischer oder in pouch-bauweise, sowie batteriezelle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4244928A1 true EP4244928A1 (de) | 2023-09-20 |
Family
ID=78483313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21801552.7A Withdrawn EP4244928A1 (de) | 2020-11-10 | 2021-10-29 | Batteriezellverschlussleiste für eine batteriezelle in prismatischer oder in pouch-bauweise, sowie batteriezelle |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230361419A1 (de) |
| EP (1) | EP4244928A1 (de) |
| DE (1) | DE102020214132B4 (de) |
| WO (1) | WO2022101035A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020063059A (ja) * | 2018-10-15 | 2020-04-23 | 大日本印刷株式会社 | 弁構造体及びこれを備える包装体 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11204094A (ja) * | 1998-01-16 | 1999-07-30 | Sony Corp | 非水電解質電池 |
| US7294429B2 (en) * | 2003-01-03 | 2007-11-13 | The Gillette Company | Alkaline cell with flat housing |
| KR100637434B1 (ko) * | 2004-05-19 | 2006-10-20 | 삼성에스디아이 주식회사 | 이차 전지와 이차 전지의 캡 조립체 및 이에 사용되는안전밸브 |
| US20080102366A1 (en) * | 2006-10-31 | 2008-05-01 | Anglin David L | End cap seal for an electrochemical cell |
| JP5880109B2 (ja) | 2012-02-16 | 2016-03-08 | 日産自動車株式会社 | バッテリパックの防爆弁 |
| US9947908B2 (en) * | 2013-07-25 | 2018-04-17 | Johnson Controls Technology Company | Vent housing for advanced batteries |
| DE102013221760A1 (de) | 2013-10-25 | 2015-05-13 | Robert Bosch Gmbh | Batteriezelle mit Sicherheitsventil und Druckausgleichsventil |
| DE102014017232A1 (de) | 2014-11-20 | 2015-06-18 | Daimler Ag | Batteriegehäuseanordnung mit einem plattenförmigen Element für ein Kraftfahrzeug und Verfahren zur Druckentlastung einer derartigen Batteriegehäuseanordnung |
| WO2017165894A1 (en) | 2016-03-25 | 2017-09-28 | Sensel Inc. | System and method for detecting and characterizing force inputs on a surface |
| DE102018125110A1 (de) | 2018-10-11 | 2020-04-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Gehäuse für eine Batterie, insbesondere für eine Kraftfahrzeug-Traktionsbatterie |
| CN211357526U (zh) * | 2019-09-24 | 2020-08-28 | 深圳市比克动力电池有限公司 | 一种用于电池顶盖上的灭火装置、电池顶盖和电池 |
| DE102021106903A1 (de) * | 2021-03-19 | 2022-09-22 | Konzelmann Gmbh | Druckausgleichsvorrichtung |
| DE102024111496A1 (de) * | 2024-04-24 | 2025-10-30 | Hoerbiger Antriebstechnik Holding Gmbh | Zellgehäuse für einen Batteriezellkörper |
-
2020
- 2020-11-10 DE DE102020214132.0A patent/DE102020214132B4/de active Active
-
2021
- 2021-10-29 WO PCT/EP2021/080165 patent/WO2022101035A1/de not_active Ceased
- 2021-10-29 EP EP21801552.7A patent/EP4244928A1/de not_active Withdrawn
-
2023
- 2023-05-08 US US18/313,874 patent/US20230361419A1/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020063059A (ja) * | 2018-10-15 | 2020-04-23 | 大日本印刷株式会社 | 弁構造体及びこれを備える包装体 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022101035A1 (de) | 2022-05-19 |
| DE102020214132A1 (de) | 2022-06-02 |
| US20230361419A1 (en) | 2023-11-09 |
| DE102020214132B4 (de) | 2022-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102020113999B4 (de) | Entgasungseinheit und Elektronikgehäuse, insbesondere Batteriegehäuse | |
| DE102008059956B4 (de) | Batterie, insbesondere Fahrzeugbatterie | |
| DE202020101150U1 (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 | |
| EP4252308A1 (de) | Druckausgleichseinrichtung, verfahren zum druckausgleich und gehäuse, insbesondere batteriegehäuse | |
| DE102021132479A1 (de) | Batterieanordnung und Verfahren zum Abführen eines Gases aus einer Batteriezelle | |
| DE102021208346A1 (de) | Akkumulator für ein Kraftfahrzeug und Kraftfahrzeug mit Akkumulator | |
| DE102013216071A1 (de) | Galvanisches System umfassend eine Mehrzahl von galvanischen Zellen und eine Entgasungseinrichtung | |
| DE102013204087A1 (de) | Entgasungssystem für Batteriemodule | |
| DE102019112432A1 (de) | Entgasungseinheit und Elektronikgehäuse, insbesondere Batteriegehäuse | |
| DE19751136A1 (de) | Stopfensystem zum Verschließen von Zellenöffnungen eines Akkumulators und Akkumulatordeckel zur Verwendung des Stopfensystems | |
| DE102020132188A1 (de) | Entgasungseinheitsanordnung, Entgasungseinheit, Verwendung einer Entgasungseinheit in einer Entgasungsanordnung und Batteriegehäuse | |
| DE102021200383A1 (de) | Batterie sowie Fahrzeug mit einer solchen | |
| DE102018206793A1 (de) | Deckel für ein Batteriegehäuse, Hochvoltbatterie für ein Kraftfahrzeug und Kraftfahrzeug | |
| EP2478577B1 (de) | Verschlussstopfenanordnung für einen akkumulator | |
| DE102013223361A1 (de) | Batteriezelle mit Sicherheitsventil und semipermeablem Verschlusselement | |
| DE102021117692A1 (de) | Entgasungseinheit und Gehäuse, insbesondere Batteriegehäuse | |
| DE102021119448A1 (de) | Entgasungseinheit und Gehäuse, insbesondere Batteriegehäuse | |
| DE102013203601A1 (de) | Dichtelement für einen Akkumulator | |
| WO2025082691A1 (de) | Hochvoltbatterie als traktionsbatterie für ein kraftfahrzeug | |
| DE102021128942A1 (de) | Entgasungseinheit und Elektronikgehäuse mit einer Entgasungseinheit | |
| DE102022112088A1 (de) | Batteriezelle mit zweistufigem Druckausgleichssystem | |
| DE102014200194A1 (de) | Batteriesystem mit wenigstens einer Batteriezelle und einer Entgasungseinrichtung | |
| WO2015051889A1 (de) | Vorrichtung zur verringerung des innendrucks in einem batteriegehäuse | |
| EP4244928A1 (de) | Batteriezellverschlussleiste für eine batteriezelle in prismatischer oder in pouch-bauweise, sowie batteriezelle |
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: 20230607 |
|
| 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) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20240709 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20241112 |