CN1163676A - Seal for electrochemical cell - Google Patents

Abstract

An electrochemical cell has a wheel shaped molded plastic seal member (10) of a unitary construction which includes a central cylindrical hub (12) from which depend in outward radial sequence, an annular pressure vent (18), a boss (26), a downward projecting skirt (30), an annular flexure means, for providing radial movement and an outer rim terminating at its periphery in a cylindrical wall (40). The pressure vent (18) includes a thin membrane ring (22) depending from the hub (12). A hinged ring (24) joins the periphery of the diaphragm (20) to the boss (26).

Description

The sealing of electrochemical cell

The present invention relates to the exhaust sealing of electrochemical cell.More specifically, the present invention relates to electrochemical cell such as alkaline primary cell, the one end seals with the sealing device that has the plastics dielectric material seal, this plastics dielectric material seal has a pressure exhaust mouth of being made up of circular membrane, if produce undue battery pressure because the shearing force circular membrane is broken and made battery drain gas.

Electrochemical cell such as alkaline primary cell is to close on the black box by the curling then openend of filling active batching at one end closed cylindrical metal jar or the container to make, and the sealing assembly comprises a non-conductive seal, a metal collector and a metal end caps that is used as an electrode of battery.Some black box also comprises a metal dish, as a kind of supporter to prevent that battery and shell can be crushed in closing battery and curling technology or distortion.Seal normally plate-like or colyliform, and create a single working of plastics through injection molding.The latest development of this black box and they application in electrochemical cell exemplary but nonrestrictive example are obtaining open in United States Patent (USP) 4,537,841 and 5,080,985 for example.

Except sealing function, no longer interlock or occur seriously breaking of battery under the mal-condition when battery pressure exceeds predeterminated level, the battery exhaust must be opened and make to plastic seal also.The actual exhaust air device that present plastic seal is adopted all relies on the thin elastic membrane of breaking under the condition of high voltage.Dissimilar and exhaust apparatus different configurations in the plastic seal are for example in United States Patent (USP) 3,218,197; 3,219,488; Open in 4,476,200 and 5,080,985.Disclosed exhaust apparatus moves upward because of exhaust apparatus under the pressure basically and swells film stretching, extension and tearing are broken under pulling force in these patents.Plastic film for thin (for example 0.2mm is thick) is difficult to obtain break with reproducible pulling force accurately.This cause actual exhaust starting pressure be change and be difficult in the required scope controlled.Therefore, still need the exhaust apparatus in a kind of plastic seal, this exhaust apparatus can be accurately molded and specific thrust under the exhaust apparatus that breaks more reliable and more can reappear.

The present invention relates to a kind ofly be used for the non-conductive seal of electrochemical cell and relate to a kind of battery that adopts this seal, wherein said seal be unitary construction and comprise the pressure exhaust mouth that a meeting is broken under the shearing force that pressure causes.This seal is plate-like or colyliform, with suitable non-conductive and yielding material (as plastics) injection-molded, and has the cylindrical hub at the center of being positioned at, and is connected with outer rim by this hub of pedestal that has the pressure exhaust mouth.This pressure exhaust mouth comprises that one has one as the film of ring and the ring-type film body of a ring-type hinge, and this film is attached to be hung on the inner periphery of this ring-type film body and on the attached excircle that hangs over this annular membrane of this ring-type hinge.This outer rim comprises a cylindrical outer wall part.Seal comprises that has a colyliform dish that is positioned at the cylinder hub at center in a kind of execution mode, from the cylinder hub by outwardly radially order around adhering to a circular pressure exhaust outlet, an endless flexible device and a wheel rim, this endless flexible device allows the inside radial motion under the situation that does not influence this pressure exhaust mouth of this wheel rim, and this wheel rim has a cylindrical outer wall.In this embodiment the pressure exhaust mouth comprise one as ring around the attached film that hangs on the hub in ground, this film is connected with the inner periphery of a ring-type die body, hangs one as the hinge that encircles around ground is attached on the excircle of this film body.This die body is thicker than this film significantly and the stress that pressure causes is focused on or be sent to film, thereby makes film breaks in essence under shearing force when battery pressure exceeds predeterminated level.Thereby this film also serves as and is the stress induced body to film.Breaking of this film decontroled the inner periphery of film body, thereby allows this film body to move so that the battery exhaust in the bending of hinge place and along the direction of leaving the battery pressure that applies.The sealing part is designed to battery be lost heart predetermined when making battery no longer within the scope of the pressure value of interlock when battery pressure.Can under the pressure limit that film is extended and break because of tension force in fact, not expand or bending thereby the film body of exhaust outlet part is enough thick.Thereby can not break and enough approach and deflection when the inner periphery that makes film body owing to breaking of film is unfettered, to allow film body to move up thereby hinge fraction is enough thick.

Plastic seal of the present invention is used for a kind of black box, this black box comprises seal, a supporting disk, an anode collector and a metal end caps, this supporting disk is pressed on the edge of sealing part forming sealing, and electric the going up of this metal end caps is connected the negative electrode that serves as battery with this current-collector.Thereby, the present invention relates to a kind of black box of the electrochemical cell that uses seal of the present invention and relate to a kind of electrochemical cell that contains this seal.Use a kind of film that under shear stress, breaks in essence to reduce by 50 percent exhaust pressure variability and its thickness of permission raising, thus easier to be molded.

Fig. 1 (a) and Fig. 1 (b) represent the constructed profile and the fragmentary, perspective view of seal of the present invention respectively.

Fig. 2 is the perspective cut-away schematic view of the black box of an electrochemical cell that adopts seal of the present invention.

Fig. 3 schematically represents the profile of an alkaline battery, and this alkaline battery has a sealing device that adopts seal of the present invention.

Referring to Fig. 1 (a) and 1 (b), the plastic seal device 10 of an injection-molded is expressed as probably being wheel shape or dish type, it has the overall structure of the cylinder hub 12 that is positioned at the center, from hub 12 along outside radially order successively around the attached circular pressure exhaust outlet 18 of hanging down in ground, annular boss 26, outstanding downwards skirt 30, one allow the endless flexible device 38 that moves radially, sealing part 10 finishes on an edge, and this edge comprises a upwardly extending cylindrical wall 40 at its excircle place.In this embodiment, exhaust outlet 18, boss 26, skirt 30 and flexible device 38 are formed the base part of sealing part.But pressure exhaust mouth 18 is discharge portions of this pedestal, boss 26, skirt 30 and flexible device 38 be this pedestal can not discharge portion.Hub 12 has an axial hole 14 that is used to accept current-collector 102 (Fig. 3) and its longitudinal axis base plane perpendicular to the sealing part.In this embodiment, circular row gas port 18 approximately be the plane and comprise (i) film ring 22 at edge place within it, sagging and by this film ring of this inner edge attached on the hub 12, (ii) thick relatively ring-type film body 20, and (iii) a conduct encircles round the hinged component 24 of the outer rim of this film body, is connected with annular boss 26 by its this film body.Boss 26 expressions become a thick relatively ring.Because battery pressure reaches upwards expanding of the caused seal pedestal of the degree that film 22 is broken under stress, this will describe in detail below when the metal support shown in this boss and Fig. 2 and Fig. 3 prevents together that battery from losing heart in the present embodiment.As shown in Figure 3, radially outwards sagging and downward extension mixes with cathode assembly with the anode component that prevents battery (for example, alkaline battery) skirt 30 mutually from the Outboard Sections of boss 26.Radially outwardly around attached flexible device 38, this flexible device comprises the ring-type V-shaped groove 32 that is formed by wall 34 and wall 36 from skirt 30.At last; upwardly extending edge 40 be attached at wall 36 on the top and comprise a plurality of lugs 42 that inwardly radially extend from the inner surface of its thin-walled portion 46, these lugs as shown in Fig. 2 and Fig. 3 and as the back detailed description be used for protecting reliably a metal end caps electrode in inside.Annular hangers 48 on the inner surface of edge 40 supports the outward flange of black box supporting disk as shown in Fig. 2 and Fig. 3.The outer surface that a plurality of ribs 52 are expressed as from the top of wall 36 extends and extends downwards from the bottom of the outer hangers 50 of edge 40 to external diameter.These ribs allow black box is inserted into (see figure 3) in the top of metal can of the positive electrode that serves as battery, and these ribs also allow to make the air of carrying secretly therefrom to overflow to avoid between erecting stage discharge or " extraction " electrolyte from jar when be installed to black box in the jar.As shown in Figure 3, the inner surface that the size of these ribs is decided to be with the metal battery container reaches slight interference fit, thus the position that during assembling and crimp operation, is keeping black box.The hangers of expressing in Fig. 3 on edge 40 bottoms 50 supports black box and black box is remained on the suitable distance of chemical parts of leaving battery in battery.

As shown in Fig. 1 (a) and 1 (b), film 22 is not to increase its thickness gradually for the thick film body portion 20 that forms exhaust outlet.On the contrary, increase thickness for the ease of molded suddenly by little pointed cone 21.The pressure that produces in the battery is applied on the basal surface of the base part that comprises film body of sealing device.Film body part 20 in the exhaust outlet is made enough thick, make it can not produce enough big expansion under the exhaust starting pressure or upwards arch upward, thereby generation can make film breaks and break at pulling force and makes film leave the tensile stress of the outer wall of hub down on film.Like this, thicker film body sends the stress that upwards pressure that brings out to film, is basically parallel on this stress direction in the embodiment shown attachedly hang the substrate surface of film and perpendicular to thin film planar.In a kind of unshowned execution mode, intersect with a basic vertical angle and the vertical cylindrical outer wall of hub the bottom of film.Under exhaust pressure, this film body is bent upwards during notch stress effect when pressure produces film even as big as the intersection between the wall of film basal surface and hub in, so film is breaking under the shearing force that otch brings out rather than under the tension force.Expression in the accompanying drawings be used for execution mode as the small size battery of AA battery, the bottom of film and the basal surface of hub overlap, and do not have angle between the outer wall of film basal surface and hub.Under these two kinds of arbitrary situations, film 22 breaks under shearing force in fact, thereby allows film body 20 to be bent upwards at hinge 24 places so that battery is lost heart.Also illustrate in this embodiment, the hinge portion 24 of exhaust outlet 18 can be the same thick and the same wide with film 22, perhaps if desired can be thicker.Its size should make can not cut off under the exhaust starting pressure or can upwards not expand, but can deflection when the shear fracture of film 22 occurs and crooked thick main film body with the permission exhaust outlet partly move up and make the battery exhaust.In Biao Shi the execution mode, the thickness and the width of film and hinge are identical in the accompanying drawings.Multiply by thickness but equal total circumferential length as the section of shear, the section of shear of hinge is much bigger, because the length of hinge is obviously greater than the length of film.Therefore, under given battery pressure, the pressure stresses with regard to the active force on the unit section of shear, the stress that bears on significantly greater than hinge at the pressure that bears on the film.

Those skilled in the art will appreciate that the actual size of exhaust part not only depends on required exhaust pressure, also depend on size, its position of exhaust outlet or leave the distance at center of plastic seal and plastic material that seal adopted or the like, and actual size should be determined on the basis in all cases.For the purpose of illustrating the invention, be below be used for D type alkaline primary cell nylon injection mould seal of the present invention a signal but nonrestrictive example.Total overall diameter of this dish is 33mm, and the overall width of this exhaust apparatus from the hub to the boss is 3.7mm.Film body is that 0.70mm is thick.Hinge portion is thick to be 0.35mm, the wide 0.27mm of being.Film is thick to be the wide 0.27mm of being of 0.15mm.Boss is that 1.7mm is thick.The total overall diameter of similar seal that is used for typical AA alkaline battery is 14mm, and its exhaust outlet is that 2mm is wide.Film body is that 0.38mm is thick.Film and hinge portion all are that 0.19mm is thick, 0.14mm is wide.Its bottom that is substantially similar to bottom of film shown in Fig. 3 and hub coincides when being used for AA type battery, and film breaks under shearing force when owing to the pressure battery exhaust in the battery.Those skilled in the art's understanding plastics when there is not chamfering in the junction of adjacently situated surfaces are difficult to molded.Therefore, the junction that this film is molded as thereon the vertical cylindrical wall surface of surface, lower surface or this two surfaces and hub has chamfering, and chamfering (not shown) radius is as far as possible little and be no more than about 0.05mm.

Commercial available being applicable to made the exemplary of sealing device of the present invention but not restrictive material comprises thermoplastic polymer and various nylon alloy and other material of the polypropylene of for example nylon, filling, poly-alum etc., as alkene adoption compound, ABS and poly-alum.

Fig. 2 is a perspective cut-away schematic view that adopts the cell sealing assemble of seal of the present invention, and it is used for alkaline AA battery in the present embodiment.Fig. 3 schematically represents the section of an AA battery, and the end by this battery of crimping seals with described black box.Fig. 2 represents a kind of better embodiment, becomes one whole comprising black box 100 pre-assembled of sealing device 10 of the present invention, battery between erecting stage this assembly can be used as a separate part and handle.Referring to Fig. 2 and Fig. 3, black box 100 is expressed as comprising a molded plastics seal of the present invention 10, metal collector 102, a metal carrier 104 and a metal cap 106, and this metal cap also serves as an electrode for battery.In the present embodiment, cap 106 is negative electrodes of alkaline primary cell.Those skilled in the art are referred to as nail to metal collector usually, can adopt such current-collector if desired in enforcement of the present invention.In that illustrated in this article and the illustrated execution mode, metal collector more resembles a rivet and does not resemble a nail.The lower surface of the upper surface by making boss and the circle-shaped ring portion 105 (Fig. 3) of supporting disk 104 contacts, and the annular boss 26 of plastic seal and metal support 104 prevent the expansion of the pedestal of the sealing part under the battery pressure together.The moving up of pedestal that this has limited moving up of boss and has limited seal 10, thus prevent the overinflation under the pressure otherwise can cause film under stretching rather than under shearing, breaking.As shown in Figure 3, on the attached Outboard Sections that hangs over boss 26 of skirt 30 and the anode component that extends downwards to prevent battery (for example alkaline primary cell) mix mutually with cathode assembly.The a plurality of lugs 42 that inwardly radially extend from the inner surface of edge 40 keep metal cap 106 within it reliably, thereby can treat black box as single whole during assemble.Between erecting stage, cap 106 is installed on the top of lug and is pressed by lug and enters into downwards by the wall 40 of seal and the determined cavity in top of metal support dish 104.The edge of circumferential hangers 48 supporting disks 104 during carrying out entrainment formation sealing on the inner surface of edge 40.A plurality of ribs 52 be shown as the outer surface that extends radially outwardly on the top of wall and outside the bottom of edge 40 hangers 50 extend downwards.These ribs allow black box is assigned in the top of serving as for the metal can of battery positive electrode, and allow to make when be installed to black box in the jar air effusion of carrying secretly to avoid between erecting stage " extraction " electrolyte from jar simultaneously.As shown in Figure 3, being sized to obtaining the slight interference fit with the corresponding inwall of metal battery container 122 of these ribs, thereby between erecting stage and entrainment operating period sealing assembly remain on position in the battery case.Although this black box is a kind of preferred forms that adopts seal of the present invention, those skilled in the art are appreciated that can be the sealing assembly adopts other to use design of rubber seal of the present invention, the design of illustrated type in He ' 602, ' 985 that wherein can comprise patent, but adopt these designs to be exemplary and not restrictive.

When forming sealing by crimping, nip the as shown in Figure 3 inside of edge wall 46 of seal 10 of the radial edges 107 of supporting 104.For reaching excellent sealing, the edge 107 that preferably makes supporting is at least on 25% thickness of wall 46 and wall 46 pressings of seal.In addition, metal 104 is designed so that edge 107 presents the elastic force of spring and keeping radially outer pressure to guarantee to keep sealing with the life period (for example, about-30 ℃ to+80 ℃) in big temperature range at battery on the wall 46 as shown.In addition, be appreciated that flexible device 38 allows rib radially inside and outside moving during assembling and entrainment operating period temperature fluctuation of seal, and can not influence the other parts of the seal pedestal that comprises in the pressure exhaust mouth.

By being placed on the interior ring-type hangers 124 of entrainment in the metal can 122 that constitutes battery case, express among Fig. 3 as the hangers 50 on edge 40 bottoms of the black box in the support cells 120.Metal end caps 106 expressions as the negative electrode of battery 120 become a metal dish that has central plane disc portion 112 in the present embodiment, and it slightly tilts to its central point, and heart is provided with a pit that stretches out 114 downwards in central point.The attached shallow relatively column part 116 that hanging down downwards from 112 the excircle, and having one attached to the flange on 116 the bottom 117, this flange radially stretches out and at it circumference place is terminated in 118 li at a upwardly extending edge that has a circumferential outer edges 119.The same with top illustrated sealing device, this specific end cap structure is a kind of better embodiment, but this mode is not will be as qualification when enforcement is of the present invention.Thereby employed end cap design in ' 985 patent that can adopt for example existing of other.

By a permanent elbow 140 around formation on the upper end of metal battery wall, black box 100 is expressed as the curling upper end that is sealing into battery 120.Should curl force cell wall prop up plastic seal 10 edge 40 outer surface and thereby they are bent downwardly edge 119 sealed cells with topped metal cap 106 together.Simultaneously during flange crimping operation, be applied with inside radial load around ground to supporting 104 outward flange 107, owing to this supporting design, this power produces the permanent upward force on the middle body that is applied to supporting, physics contact and electric contact between the pit 114 that the upper end of this help assurance anode collector 102 and end cap are 100 li.Metal anode current-collector or follow closely 102 and be expressed as its upper end and opened so that metal support 104 is firmly riveted the top that is positioned to prop up hub 12 by hammer, and stop moving upwards by flange 130.In Fig. 3, be shown as dish downwards towards the center for planar section on this end cap 106 of structure of showing end cap before the bending.But, during crimp operation and seal operation, applying inside radial load to the side of black box, this power causes the permanently inside pressurized of this assembly in this preferred forms.This makes the top of supporting be inclined upwardly slightly again and the upper end of current-collector pushes away pit on permanent, thereby the last planar section of end cap electrode 106 permanently is flat.This also causes the permanent upward force of upper end on pit of current-collector, and this power is guaranteed the permanent mechanical connection and permanent electric connection of following between metal collector and end cap during the battery life.

Battery 120 among Fig. 3 is intended to expression and typically has gelling zinc anode and MnO ₂The alkaline primary cell of negative electrode.As those skilled in the art are known, MnO in battery 120 ₂The inner surface of cathode material 130 and metal can 122 contacts and is isolated by non-conductive film 126 and gelled anode material 124, and this film also stops anode material to contact with the bottom of jar.The skirt 30 of plastic seal 10 hides this spacer and prevents that anode material from mixing in battery mutually with cathode material.Current-collector 102 extends in the anode material as shown in Figure 3, thereby causes being electrically connected between gelling zinc anode and the metal end caps electroplax.

Should be appreciated that obviously to have various other execution modes and modification in the embodiment of this invention, and be easy under the prerequisite of top disclosed scope and spirit of the present invention, realizing by those skilled in the art.Therefore, the scope of the claims by the appended claims herein is not limited to explanation recited above, on the contrary, these claims be organized into comprise belong to of the present invention can be as the complete characteristic of the new product of patent, comprising all characteristics and the execution mode that can treat by the equivalent that those skilled in the art are correlated with as the present invention.

Claims (30)

1. non-conductive disc-shaped seal that is used for electrochemical cell, it comprises a cylindrical hub that is positioned at the center, be connected with outer rim by this hub of pedestal that contains a circular pressure exhaust outlet, described exhaust outlet comprises a ring-type film body, and the latter has film ring that breaks at circumference place within it and at the ring-type hinge at its excircle place under the shearing force that pressure causes.

2. the seal of claim 1, wherein said pressure exhaust mouth hangs on the described cylindrical hub by described film is attached circlewise.

3. the seal of claim 2, wherein said film body is thicker than described film.

4. non-conductive seal that is used for electrochemical cell, described seal be unitary construction and for wheel shape, it comprises a cylindrical hub that is positioned at the center, by one around being connected with outer rim attached to this hub of pedestal on the described hub, described pedestal comprises a circular pressure exhaust outlet, a boss, an outstanding downwards skirt and the flexible element that radially deflection is provided, and wherein said exhaust outlet comprise one by a film ring attached to the ring-type film body on the described hub, a described film body of hinge by the excircle place of described film body is connected with described boss, and described film breaks under shearing force so that described battery exhaust under excessive battery pressure.

5. the seal of claim 4, wherein said wheel rim terminates in its excircle place in the cylindrical wall.

6. the seal of claim 5, wherein by outside radially order from the described boss successively respectively around the described pressure exhaust mouth of attached extension, boss, skirt, flexible device and wheel rim.

7. the seal of claim 6, the longitudinal axis of wherein said hub and described wall is perpendicular to described seal plane.

8. black box that is used for sealed electrochemical cell, comprise a plastic seal, a supporting disk and an annular metal end cap electrode, be attached on the described seal by this supporting disk of metal collector that extends axially the center of described dish of process and described seal, this end cap electrode is configured in contiguous described supporting disk, described seal be colyliform and be unitary construction, the longitudinal axis of its central shaft and described battery overlaps and contains a circular pressure exhaust outlet that is used for making described battery exhaust when the pressure in the described battery reaches predetermined value, described seal comprises a cylindrical hub that is positioned at the center, from this hub, adhering to a pressure exhaust mouth along outside radially order successively, a boss, an outstanding downwards skirt and an outer rim, described seal stops with a cylindrical wall on its circumference, described exhaust outlet comprises one through the annular film body of a film ring attached to described hub, have a hinge that described film body and described boss are coupled together at this film body of the excircle place of described film body, and wherein said film breaks so that described battery exhaust because of shearing force under undue battery pressure.

9. black box according to Claim 8, wherein said supporting member have an outward flange that outwards stretches to cause along the sealing on the described wheel rim wall.

10. according to the black box of claim 9, wherein said seal comprises the outside flexible device that moves of can radially inwardly reaching of a ring-type.

11. according to the black box of claim 10, wherein said metal end caps is dish down towards its center.

12. according to the black box of claim 11, the longitudinal axis of wherein said hub and wall is parallel to the longitudinal axis of described battery.

13. according to the black box of claim 12, wherein said seal comprises a flexible device that described boss and described wheel rim are coupled together.

14. will show 8 black box according to right, wherein said boss and described supporting are united guarantee that described film breaks under shearing forces.

15. one kind comprises an electrochemical cell of at one end going up with the cylinder shape metal container of the curling sealing of a black box, the sealing assembly comprises a plastic seal, a metal support dish and an annular metal end cap electrode, this metal support dish have an outward extending outward flange and by a metal collector that extends axially the center by described dish attached on the described seal, this metal end caps is configured in contiguous described supporting.Described black box is colyliform and is unitary construction, it has the central shaft that the longitudinal axis of and described battery overlaps and contains a pressure exhaust mouth that is used for making described battery exhaust when the pressure in the described battery reaches excessive value, described seal comprises a cylindrical hub that is positioned at central authorities, adhering to a circular pressure exhaust outlet by radially outer order successively from this hub, an annular boss, an outstanding downwards skirt, an endless flexible device and the outer rim that radially deflection is provided, this outer rim stops with cylindrical wall on its circumference, the longitudinal axis of wherein said hub and wall is parallel to the longitudinal axis of described battery, wherein said exhaust outlet comprises a ring-type film body, and this film body circumference within it is attached on the described hub by a film ring and has a swivel hook that it and described boss are coupled together at its excircle place; Wherein said film breaks because of shearing force under excessive battery pressure, and wherein said boss and described supporting associating prevent the overinflation of described seal under battery pressure together, thereby help described film to break under shearing force; And the described edge of wherein said supporting is pressed on the edge wall of described seal on the wall of described canister to form sealing.

16. according to the battery of claim 15, wherein said edge applies outside power and pushes down described wall at least on its thickness of 25% to described wall.

17. according to the battery of claim 16, wherein said metal collector contacts with described electrode with electric going up physically.

18. according to the battery of claim 17, wherein said current-collector applies a power that makes progress to described end cap.

19. according to the battery of claim 18, wherein said seal and then comprise a plurality of lugs on the inside of described wheel rim wall is used for curling before forming described sealing described metal end electrode is remained in the described seal described.

20. battery according to claim 19, wherein said seal and then comprise a plurality of ribs that radially extend to external diameter from the outer surface of described wheel rim, the air that allows when being inserted into described canister with the described black box of box lunch to carry secretly is overflowed from described canister, and the size of described rib is decided to be the inner surface that makes with described container and reaches and add interference fit.

21. non-conductive plate-like integral seal that is used for electrochemical cell, it comprises that is positioned at the cylindrical hub center and that be connected with an outer rim by a pedestal, this pedestal comprises a pressure row pressure mouth that breaks of being made up of a film body under shearing force, this film body circumference place within it has a film and has a ring-type hinge at its excircle place, described wheel rim stops at a cylindrical wall on its circumference, comprises a plurality of lugs that are used for keeping therein a termination electrode on the inner surface of described wall.

22. the seal of claim 21 and then comprise the ribs that a plurality of outer surface outward radials from described wheel rim extend.

23. one kind comprises one at the electrochemical cell of one end with the cylinder shape metal container of the curling sealing of a black box, the sealing assembly comprises a plastic seal, one has supporting disk and current-collector that is arranged on the contiguous sealing the margin of described seal, described seal is wheel shape and unitary construction, the longitudinal axis of its central shaft and described battery overlaps, and comprise that is positioned at the cylindrical hub center and that be connected with an outer rim that has a cylindrical wall by a pedestal, this pedestal comprises a circular pressure exhaust outlet, described exhaust outlet is made up of a ring-type film body, this film body circumference place within it has a film ring that breaks and has a ring-type hinge at its excircle place under the shearing force that pressure causes, the described edge of wherein said supporting is pressed on the described wall of described seal wheel rim on the wall of described canister to form sealing.

24. according to the battery of claim 23, wherein said seal and described supporting match and prevent that together described seal from expanding under battery pressure.

25. according to the battery of claim 24, wherein said seal pedestal comprises that one and described supporting match to prevent the annular boss of described expansion.

26. according to the battery of claim 25, wherein said seal pedestal comprises that also is used to an endless flexible device that prevents to move radially.

27. according to the battery of claim 26, wherein said black box contains one and is arranged near the round nose electrode of described supporting.

28. according to the battery of claim 27, wherein said current-collector described supporting attached on the described black box.

29. according to the battery of claim 28, wherein said current-collector causes with the physics of described termination electrode and is electrically connected.

30. according to the battery of claim 29, wherein said seal is made with nylon.

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