CN104781952A - Battery cell comprising housing cover plate with riveted filling opening - Google Patents
Battery cell comprising housing cover plate with riveted filling opening Download PDFInfo
- Publication number
- CN104781952A CN104781952A CN201380058338.6A CN201380058338A CN104781952A CN 104781952 A CN104781952 A CN 104781952A CN 201380058338 A CN201380058338 A CN 201380058338A CN 104781952 A CN104781952 A CN 104781952A
- Authority
- CN
- China
- Prior art keywords
- rivet
- list pond
- cover plate
- battery list
- opening
- 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
- 239000003792 electrolyte Substances 0.000 claims abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 22
- 239000010408 film Substances 0.000 claims description 21
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 239000010405 anode material Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000010406 cathode material Substances 0.000 claims description 5
- 238000011109 contamination Methods 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 5
- 229920006255 plastic film Polymers 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920002449 FKM Polymers 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- H01M50/19—Sealing members characterised by the material
- H01M50/193—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
- H01M50/60—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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
What is proposed is: a battery cell, in particular a lithium-ion battery cell, in which a coil element, two current collectors and electrolyte are accommodated in a housing. The housing comprises a container and a cover arrangement. The cover arrangement comprises, inter alia,a cover plate which is fixedly connected to the container once internal components of the battery cell have been introduced. In accordance with the invention, a filling opening (25) is provided in the cover plate (23), through which filling opening electrolyte can be introduced into the interior of the housing and which is closed by means of a rivet (31).
Description
Technical field
The present invention relates to a kind of battery list pond, particularly lithium ion battery list pond.The present invention relates to a kind of motor vehicle with this battery list pond in addition.
Background technology
Battery list pond, part also referred to as storage battery list pond, for the chemical accumulation of energy of energy electrically provided.The energy supply of multiple mobile device has been used in current battery list pond.Battery list pond should be used for electric motor car or the energy supply of motor vehicle driven by mixed power on land and in water of movement in addition in the future, or keeps in for the static state of the electric energy from the alternative energy.
For this reason most multiple battery list pond is combined as battery pack.In order to effectively utilize available pool-size as far as possible at this, especially application has the battery list pond of prismatic such as cuboid formula shape for this purpose.
Because the application of lithium-ions battery technology will require in high application by its possible high-energy-density, thermal stability and the memory effect that lacks mostly, such as the storage solution of motor vehicle, this lithium-ions battery technology is researched and developed now energetically based on the Economic Importance of the height of following electric automobile.
There is the battery list pond, particularly lithium ion battery list pond of number of different types, and particularly there is the battery list pond of prismatic shape in addition.Naturally this conventional batteries list pond has complicated structure mostly, wherein in order to assemble the multiple different parts of all battery list ponds application.The particularly manufacture method of application of expensive in the assembling of parts, such as welding method, this manufacture method is not only intensive on cost but also in energy consumption.All these can cause the cost improved in the manufacture in battery list pond.
Summary of the invention
In addition can reduce battery list pond assembly cost by means of embodiments of the present invention and therefore reduce associated cost.
Propose a kind of battery list pond, particularly lithium ion battery list pond at this, it has: at least one wound element, electrolyte, two current-collectors and housing.Described wound element is made up of the heap be wound around, and the heap of this winding is made up of the first film applied with anode material such as copper, the second film applied with cathode material such as aluminium and two plastic films being used as barrier film.The stacking arrangement replacing execution mode thin layer and the plastic layer be wound around also is possible.One of them current-collector conducts electricity to be connected with the first film of wound element and such as welds.Second current-collector is connected with the second Thin film conductive of wound element.This housing has container and cover device.Container has opening, and wound element and two current-collectors can be encased in housing during the manufacture in battery list pond by this opening.Cover device with being configured to air seal with wiper seal ground closed container opening.Cover device has cover plate in addition for this reason, and this cover plate can opening as much as possible in closed container and this cover plate can be such as connected with container by weld seam in order to heat-seal housing.Cover plate has filling opening in addition, and electrolyte can be filled in housing by this filling opening.The feature in battery list pond proposed by the invention is, utilizes rivet to close described filling opening.
According to the execution mode in battery list pond of the present invention in addition based on following understanding and design:
Usually first the wound element with the current-collector be arranged on wherein to be encased in the assembling in battery list pond in the container also upwards opened of housing and after death by means of the opening of the hermetically enclosed container of cover device.First cover plate and container is connected, such as, by welding in the installation of cover device.Subsequently electrolyte is filled in container by the filling opening be arranged in cover plate, thus electrolyte can soak the wound element be contained in wherein.Filling opening subsequently must hermetically and close relative to electrolyte resistance.
In conventional batteries list pond, spheroid be such as made up of metal or plastics is expressed to and fills on opening and directly or via sheet metal and the edge joint weld of filling opening be connected together for this reason.Nature welding process is a kind of course of work of costliness and can needs expensive welding robot and welding method in addition.Method for laser welding like this often needs multiple job step and therefore more complicated and cost intensive.Apply heat load in this external welding, this heat load may be problematic in the thin-walled lid execution mode of making every effort to reach.
Therefore propose, do not close filling opening with adopting welding process.
Utilize rivet to close for this reason and fill opening.For this reason can the rivet of commercial criterion of standardization of application.
Rivet so must be arranged at this, makes the bar portion of rivet extend through filling opening.The first end of radial diameter in the extension of this rivet in bar portion or upper end are greater than the diameter of filling opening.Be equally applicable to the extension that rivet is arranged on the corresponding opposite side of cover plate.The formation of rivet is that extension this overlap on the edge of filling opening of manufactured head should be guaranteed extension or enough overlapping between manufactured head and the surface of cover plate.The face that manufactured head is higher and overlapping between the two elements to the extruding force in lid surface or contact-making surface larger, so possible sealing function is better.
The advantage of rivet is further expanding and cost smaller thus of the simple of method and this joining technique.
Being in this feature, is not the connection giving prominence to two parts as usual, but the sealing function of rivet, if this rivet is arranged in the cross section of opening.Rivet must be characterised in that at this, and this rivet closes filling opening with allowing air seal and wiper seal.The difformity of rivet is available for this reason.Further expanding and standardization by rivet, standardized and application that the is instrument of cost advantages thus is possible.
Another advantage of rivet is, realizes the riveted joint of filling opening when can or else apply force on cover plate.Because application cover plate can have the only very little thickness on the order of magnitude of 1 millimeter and moreover the material with little intensity can be applied, so only following enclosure method is available, wherein not have when closed or only a small amount of power is applied on cover plate.
In one embodiment of the invention, between the extension and cover plate in the bar portion of rivet at least one sealing ring of intermediate support for filling the sealing of opening.
Sealing ring can be interpreted as that additional element is used for the sealing function in the gap of improving between the extension and lid surface in rivet bar portion at this.The advantage of sealing ring is used to be the sealing function improved further, to stop electrolyte to flow out from battery list pond.Sealing ring can so design at this, and the interior diameter of the sealing ring being is less than the diameter of extension and typically slightly larger than the diameter in bar portion, sealing ring be can be pressed on the surface of cover plate by the extension of rivet thus.Sealing ring and bar portion are preferably arranged with one heart at this.Typically implement in flexible program at one, sealing ring rivet is encased in fill in opening before by the bar portion of derivation rivet.To this it is necessary that the diameter of sealing ring is greater than the diameter in bar portion.
According in one embodiment of the present invention, sealing ring, rivet and cover plate are made up of same material.
Be in this advantage, can avoid electric current or electrochemical process and reaction, this electric current or electrochemical process and reaction cause the generation of the corrosion on the contact-making surface between different materials or less desirable voltage.This means, identical alloy is such as utilized for described component.Which prevent the corrosion effect due to additional electric current element, this electric current element is produced by the directly contact of different metal.
According in one embodiment of the present invention, rivet is made up of the plastics of potential resistance to electrolyte contamination.
The advantage of application plastics is, these plastics can be in the application in battery list pond for the cost advantages of metal material and about favourable alternative of weight because described electrochemical effect and the corrosion effect due to electric current element can be avoided.
According to one embodiment of the present invention, sealing ring is made up of the plastics of potential resistance to electrolyte contamination.
Available at the elastomer of this particularly potential resistance to electrolyte contamination.This elastomer is as comprised fluoropolymer.It is such as the elastomer of the anti-multiple electrolytical resistance of the part admixture FKM of Viton by Dupontein Company brand name.
It is noted that a sealing ring can be positioned on the both sides of the cover plate on rivet extension respectively.Sealing effectiveness can be improved further in this way.And unique sealing ring can be replaced and by multiple packing ring combination to improve sealing function.Sealing ring can be designed as resilient and thus in an unstretched state in the bar portion of derivation rivet before there is the interior diameter identical or more smaller than rivet bar portion.
According to one embodiment of the present invention, described rivet is countersunk rivet.
The advantage of countersunk rivet is, can realize the riveted joint of the only side will riveting component, and not must on the corresponding opposite side of rivet application tool.The countersunk rivet pincers that often application is special for this reason in the application.
Also advantageously, in riveting process, do not produce remainder or chip, described remainder or chip can to arrive subsequently in enclosure interior and can cause mechanical failure or chemical reaction there.Instrument without countersunk rivet and application be further expand and cost advantages ground is available.
In one embodiment of the invention, described countersunk rivet is cup type rivet.
Cup type rivet can be understood as the special execution mode of countersunk rivet, and wherein the bottom in rivet bar portion is closed and therefore forms the shape of cup.
The advantage in battery list pond that cup type rivet is used for proposing at this is, rivet being closed on the side of internal tank and therefore can close filling opening to air seal and wiper seal.The advantage provided in addition compared to other rivet form is, does not leave waste material or remainder and therefore do not cause the damage of less desirable reaction or battery functi on by riveting process in enclosure interior.
A kind of method of the battery container for sealed cell list pond is proposed in addition.This battery list pond has: wound element, and this wound element is made up of the heap be wound around, and the heap of this winding is by the first film applied with anode material, formed with the second film of coating cathode material and two plastic films being used as barrier film.Battery list pond has electrolyte, two current-collectors in addition, and one of them current-collector and the first film conduct electricity and to be connected and another current-collector is connected with the second Thin film conductive.Battery list pond has housing in addition, and this housing has container and cover device, and wherein container has opening, and wound element and two current-collectors can be encased in housing during the manufacture in battery list pond by this opening.This structure cover device with air seal with wiper seal ground closed container opening and described cover device has cover plate.Cover plate has the filling opening for being filled into by electrolyte in housing.The method has following steps: by riveted joint air seal with wiper seal close described filling opening.
According to one embodiment of the present invention, described riveted joint has following steps:
Imported in the bar portion of rivet and fill in opening, wherein rivet has extension under importing state on the first end in bar portion on the side deviated from container of cover plate, and the radial diameter of this extension is greater than the diameter of filling opening.Wherein the diameter in the bar portion of rivet is less than the diameter of filling opening at this.
In other words, the rivet that the side in bar portion has the manufactured head of extension form is inserted into bar portion fills in opening, thus the surface contact of manufactured head or extension and cover plate.In the application of sealing ring, sealing ring is shifted onto in rivet bar portion in advance, so that subsequently between the extension and the surface of cover plate of rivet.
In the next step, at the second end towards expander bar portion on the side of container of cover plate, thus filling opening is closed together with the extension of the second end in bar portion and the air seal of bar portion and wiper seal in the extension of the first end in bar portion.The diameter of filling opening is greater than in the radial diameter of this second extension.
According to another aspect of the present invention, motor vehicle has according to battery list pond of the present invention.
Multiple other movement or static applications is may be used in principle according to battery list pond of the present invention.What belong to this is such as offshore applications or battery-operated motor cycle and other motion or entertainment device for this reason in mobile field.
It is noted that and to be described according to different execution mode at this according to the possible feature and advantage in battery list pond of the present invention.Those skilled in that art are construed as, and each feature can mutually combine in a suitable manner or exchange, to realize other execution mode and possible best of breed effect in this way.
Accompanying drawing explanation
Describe embodiments of the present invention according to accompanying drawing below, wherein specification and accompanying drawing all should not be construed as limitation of the present invention.
Fig. 1 shows the exploded view in lithium ion battery list pond;
Fig. 2 shows the sectional view before battery list pond riveted joint according to the embodiment of the present invention with the filling opening of rivet and sealing ring;
Fig. 3 shows the sectional view after battery list pond riveted joint according to the embodiment of the present invention with the filling opening of rivet and sealing ring;
Fig. 4 shows the sectional view of filling opening having rivet and be arranged in the sealing ring on inside cover plate after battery list pond riveted joint according to the embodiment of the present invention;
Fig. 5 shows to be had rivet and not to have the sectional view of the filling opening of sealing ring after battery list pond riveted joint according to the embodiment of the present invention;
Fig. 6 shows the motor vehicle of the battery had according to the embodiment of the present invention.
Accompanying drawing be only signal and not according to correct proportions.Identical Reference numeral represents identical in the accompanying drawings or acts on identical feature.
Embodiment
Fig. 1 shows the exploded view in conventional lithium ion battery list pond.Can find out, battery list pond is made up of multiple single component.Only describe component for understanding necessity of embodiments of the present invention and feature thereof at this, and save the description of all the other components to battery list pond.
Battery list pond 1 has at least one wound element 3, and described wound element has the heap 5 of winding, and the heap of described winding is by the Copper thin film applied with anode material, formed with the aluminium film of coating cathode material and the plastic film being used as barrier film between it.
In order to electrical contact, Copper thin film and aluminium film stagger mutually stacking along winding axis slightly with contrary direction, thus the corresponding edge of Copper thin film aluminium film slightly outstanding wound element on opposed narrow side on narrow side.The current-collector 7 be made of copper is welded on the outstanding region 4 of Copper thin film, thus this current-collector is connected with the anode electrical of wound element.Second current-collector 9 made of aluminum is welded on the opposed outstanding region of aluminium film, to set up the electrical contact with the negative electrode of wound element 3.
The wound element 3 being provided with two current-collectors 7,9 is encased in by opening 14 in the square container 13 upwards opened subsequently.Container 13 is closed with cover device 15 subsequently, and described cover device also comprises some other components except cover plate 23.Cover plate 23 is received on the inner surface of container with its edge joint weld at this.Container 13 and cover plate 23 are formed by metallic plate, so that in addition can to the electrolyte of chemical resistance of concrete.
Cover plate 23 has in addition fills opening 25, and after cover plate 23 is fixed on container 13, electrolyte can be filled in the inside of the housing 11 formed by container 13 and cover device 15 by this filling opening.Fill opening 25 be such as configured with circular cross section and there is the diameter of about 5 millimeters.
Close by means of spheroid 26 in the battery list pond of routine and fill opening 25, described spheroid has than filling the bigger diameter of opening 25.Spheroid 26 is pressed at this and fills in opening 25 and weld with cover plate 23 around ground subsequently.
Show the riveted joint/sealing device 30 of the filling opening 2 for being sealed shut the battery list pond according to a kind of exemplary execution mode of the present invention in figs. 2 and 3.The bar portion 35 of rivet 31 is received into fills in opening 25.Rivet 31 side has extension 32 thereon, and this extension has support region 49, and this support region is by the surface contact of sealing ring 34 with cover plate 23.Rivet as shown in Figure 2 only had extension 32 before riveted joint.The other end of rivet can be considered as the extension in bar portion 35.This allows to be imported in opening by rivet before riveted joint.
In addition, rivet has microscler cavity 36, and this cavity passes axially through rivet inside trend.When cup type rivet shown here, the second end illustrated below here of rivet is closed on its side.Therefore cavity 36 is not through, but only thereon end is opened and close on bottom.
Cavity 36 has widening portion 44 on its lower end.Widening portion 44 is for holding the end 40 widened of pin 38, and this pin is guided through microscler cavity 36.This pin 38 has specified fracture position on position 42.If pin 38 pulls out from cavity 36 with the power 46 of cover plate dorsad in riveting process, so the part 40 of widening of pin pull rivet 31 with the lower part of the form shown in Figure 3 of the second extension.Pin 38 from cavity 36 continue pull counter stress so improve, pin is ruptured and the part 40 of widening of pin 38 is retained in the extension of generation in position 42.This advantage had not only is, the riveted joint of cover plate only side is possible, but also is do not have remainder produced by riveting process and may drop into subsequently in container.
Figure 3 illustrates the cover plate after riveted joint and rivet/seal ring apparatus 30.At this rivet by bearing-surface 49 and 48 and by the opening 25 in sealing ring 34 closed cover 23.After riveted joint, the end 40 widened of the only separation of pin is arranged in cavity 36, and this end is separated with pin 38 in position 42.Riveted joint after rivet 32 there is the second extension 33 now, this second extension comprise in inside hole 44 for holding in the widening portion of the end widened of pin 40.Two extensions 32 and 33 are interconnected by bar portion 35 under stress at this, and this bar portion is guided through opening.
As visible by view, sealing function can be affected thus, namely realize sealing as far as possible between bearing-surface 49 and 48 and between sealing ring 34 and cover plate 23 with contacting close to profile.Closing with pressure-tight of the air seal of opening is facilitated, particularly by the surface closed of the second extension 33 at this.
Replace the flexible program of cup type rivet (Becherniet) shown in this, other clinching method and flexible program are also possible, such as hammering rivet (Hammerschlagniet), and wherein pin to be tufted in rivet and to be retained in there.Thus achieve closing of opening.It is also possible that push rod rivet (Zugdornniet), wherein at the outstanding pin of rivet end by pulling jumping-up and rupturing at specified fracture position.And at the hole of the end-enclosed rivet of the jumping-up of this pin or opening, to realize air seal with pressure-tight sealing.
Figure 4 illustrates the execution mode that another kind of the present invention is exemplary, wherein sealing ring 34 on the inner side or downside of cover plate 23 in the lower extension 33 of rivet 31, particularly arrange between support region 48 and cover plate 23.In this case, upper extension 32 particularly support region 49 contact with the surperficial direct mechanical of cover plate 23.
In addition, the execution mode with rivet 31 can be considered, wherein two or more sealing ring 3 is so arranged, thus makes described sealing ring on bearing-surface 49 is positioned at cover plate 23 in other words upside between 48 and cover plate 23 or downside.
Fig. 5 shows according to a kind of exemplary execution mode of the present invention, wherein rivet 31 when there is no sealing ring with its corresponding extension 32 and 33, particularly directly recline with bearing-surface 49 and 48 and cover plate 23.
Fig. 6 shows the motor vehicle 100 with battery 102, and described battery is combined by multiple above-mentioned battery list pond 1.
Claims (10)
1. battery list pond (1), particularly lithium ion battery list pond, it has:
Wound element (3), described wound element is made up of the heap be wound around (5), and the heap of described winding is by the first film applied with anode material, formed with the second film of coating cathode material and two plastic films being used as barrier film;
Electrolyte;
Two current-collectors (7,9), one of them current-collector and the first film conduct electricity and to be connected and another current-collector is connected with the second Thin film conductive;
Housing (11), described housing has container (13) and cover device (15), wherein said container (13) has opening (14), described wound element (3) and two current-collectors (7, 9) can be loaded into during the manufacture of described battery list pond (1) in described housing (11) by described opening, wherein said cover device (15) there is cover plate (23) and air seal ground and wiper seal close the opening (14) of described container (13), wherein said cover plate (23) has the filling opening (25) for being filled into by electrolyte in described housing (11),
It is characterized in that, described filling opening is closed by rivet (31).
2. battery list pond according to claim 1, wherein, between the extension and cover plate in the bar portion (35) of described rivet, intermediate support has at least one for sealing the sealing ring (34) of filling opening.
3. battery list pond according to claim 1 and 2, wherein, sealing ring, rivet and cover plate are made up of same material.
4. the battery list pond according to any one of the claims, wherein, described rivet is made up of the plastics of potential resistance to electrolyte contamination.
5. the battery list pond according to Claims 2 or 3, wherein, described sealing ring is made up of the plastics of potential resistance to electrolyte contamination.
6. the battery list pond according to any one of the claims, wherein, described rivet is countersunk rivet.
7. battery list pond according to claim 6, wherein, described countersunk rivet is cup type rivet.
8., for the method for the battery container in sealed cell list pond, described battery list pond has:
Wound element (3), described wound element is made up of the heap be wound around (5), and the heap of described winding is by the first film applied with anode material, formed with the second film of coating cathode material and two plastic films being used as barrier film;
Electrolyte;
Two current-collectors (7,9), one of them current-collector and the first film conduct electricity and to be connected and another current-collector is connected with the second Thin film conductive;
Housing (11), described housing has container (13) and cover device (15), wherein said container (13) has opening (14), described wound element (3) and two current-collectors (7, 9) can be loaded into during the manufacture of described battery list pond (1) in described housing (11) by described opening, wherein said cover device (15) there is cover plate (23) and air seal ground and wiper seal close the opening of described container, wherein said cover plate (23) has the filling opening (25) for being filled into by electrolyte in described housing (11),
The method has following steps: by riveted joint air seal with wiper seal close filling opening.
9. method according to claim 8, wherein, described riveted joint has following steps:
The bar portion (35) of rivet (31) is imported to and fills in opening; Wherein said rivet has extension (32) under importing state on the first end in bar portion, on the side deviated from container of described cover plate, and the radial diameter of described extension is greater than the diameter of described filling opening; And
The diameter in the bar portion of wherein said rivet is less than the diameter of described filling opening;
At the second end (33) in like this described bar portion of expansion on the side of container of described cover plate, thus make the extension of the first end in described bar portion together with the extension of the second end in described bar portion and described bar portion air seal with wiper seal close described filling opening;
Wherein the radial diameter of the second extension is greater than the diameter of described filling opening.
10. motor vehicle (100), it has according to the battery list pond (1) according to any one of claim 1 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012220386.9A DE102012220386A1 (en) | 2012-11-08 | 2012-11-08 | Battery cell with housing cover plate with riveted filler opening |
| DE102012220386.9 | 2012-11-08 | ||
| PCT/EP2013/070308 WO2014072127A1 (en) | 2012-11-08 | 2013-09-30 | Battery cell comprising housing cover plate with riveted filling opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104781952A true CN104781952A (en) | 2015-07-15 |
Family
ID=49253320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380058338.6A Pending CN104781952A (en) | 2012-11-08 | 2013-09-30 | Battery cell comprising housing cover plate with riveted filling opening |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104781952A (en) |
| DE (1) | DE102012220386A1 (en) |
| WO (1) | WO2014072127A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490192A (en) * | 2020-06-29 | 2020-08-04 | 江苏时代新能源科技有限公司 | Sleeve assembly, cover plate assembly, battery and power utilization device |
| EP4164037A1 (en) * | 2021-10-08 | 2023-04-12 | Prime Planet Energy & Solutions, Inc. | Battery and method of manufacturing same |
| KR102871819B1 (en) | 2021-10-08 | 2025-10-17 | 프라임 플래닛 에너지 앤드 솔루션즈 가부시키가이샤 | Battery and method of manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015002572A1 (en) * | 2015-02-27 | 2016-09-01 | Wabco Europe Bvba | Disc brake, in particular for commercial vehicles, and caliper of such a disc brake |
| DE102021209413A1 (en) | 2021-08-26 | 2023-03-02 | Volkswagen Aktiengesellschaft | Process for manufacturing a battery cell |
| KR102853425B1 (en) * | 2022-02-07 | 2025-09-02 | 삼성에스디아이 주식회사 | Cylindrical secondary battery |
| DE102022001430A1 (en) | 2022-04-25 | 2023-10-26 | Mercedes-Benz Group AG | Housing for a single electrochemical cell |
| DE102023125363A1 (en) * | 2023-09-19 | 2025-03-20 | Bayerische Motoren Werke Aktiengesellschaft | COVER ASSEMBLY, ENERGY STORAGE CELL, BATTERY MODULE AND METHOD FOR FILLING AN ENERGY STORAGE CELL |
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| US20110072648A1 (en) * | 2009-09-30 | 2011-03-31 | Sanyo Electric Co., Ltd. | Method for manufacturing sealed battery |
-
2012
- 2012-11-08 DE DE102012220386.9A patent/DE102012220386A1/en not_active Withdrawn
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2013
- 2013-09-30 WO PCT/EP2013/070308 patent/WO2014072127A1/en active Application Filing
- 2013-09-30 CN CN201380058338.6A patent/CN104781952A/en active Pending
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| US20060105236A1 (en) * | 2004-11-18 | 2006-05-18 | Byd Company Limited | Lithium ion secondary batteries |
| CN101142698A (en) * | 2005-03-18 | 2008-03-12 | 丰田自动车株式会社 | sealed battery |
| CN201041812Y (en) * | 2007-12-08 | 2008-03-26 | 深圳市比克电池有限公司 | A battery cover board component and battery |
| CN101983447A (en) * | 2009-06-19 | 2011-03-02 | 丰田自动车株式会社 | Batteries, vehicles and equipment equipped with such batteries |
| US20110072648A1 (en) * | 2009-09-30 | 2011-03-31 | Sanyo Electric Co., Ltd. | Method for manufacturing sealed battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490192A (en) * | 2020-06-29 | 2020-08-04 | 江苏时代新能源科技有限公司 | Sleeve assembly, cover plate assembly, battery and power utilization device |
| WO2022001354A1 (en) * | 2020-06-29 | 2022-01-06 | 江苏时代新能源科技有限公司 | Sleeve assembly, cover plate assembly, battery, electrical device, and through hole sealing method |
| US12015162B2 (en) | 2020-06-29 | 2024-06-18 | Jiangsu Contemporary Amperex Technology Limited | Cover plate assembly, battery, electricity-consuming apparatus and method for sealing through hole |
| EP4164037A1 (en) * | 2021-10-08 | 2023-04-12 | Prime Planet Energy & Solutions, Inc. | Battery and method of manufacturing same |
| KR102871819B1 (en) | 2021-10-08 | 2025-10-17 | 프라임 플래닛 에너지 앤드 솔루션즈 가부시키가이샤 | Battery and method of manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012220386A1 (en) | 2014-05-08 |
| WO2014072127A1 (en) | 2014-05-15 |
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Application publication date: 20150715 |