CN102790190A

CN102790190A - Connecting structure for anti-explosion film and cover plate

Info

Publication number: CN102790190A
Application number: CN2012102880346A
Authority: CN
Inventors: 韦俊红; 韩红梅; 宁欣; 杨涛; 杨瑞
Original assignee: HENAN NENGCHI POWER CO Ltd
Current assignee: HENAN NENGCHI POWER CO Ltd
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2012-11-21

Abstract

The invention discloses a connecting structure for an anti-explosion film and a cover plate. The connecting structure comprises the cover plate, a pressing ring and the anti-explosion film. The structure of the pressing ring is one of the following structures: (1) the pressing ring is an annular plate with a hole at the center, wherein a stepped annular body with a small diameter is arranged at the upper end of the pressing ring; an upper annular surface and a lower annular surface are formed; the outer peripheral surface of the pressing ring is in tight fit with a cylinder wall of the anti-explosion film and a side wall of a groove of the cover plate; the lower annular surface of the pressing ring is lower than a cylinder opening end face of the anti-explosion film; a central hole of the pressing ring is opposite to the central hole at the bottom of the groove of the cover plate; and a plate body at a port of the groove of the cover plate is riveted and pressed, so that the plate body is deformed and is pressed on the lower annular surface of the pressing ring together with the cylinder opening of the anti-explosion film, thereby forming sealing; and (2) the pressing ring is the annular plate with the hole at the center, wherein a conical surface with a small upper end and a big lower end is arranged on the outer surface of the pressing ring. Compared with the prior art, the connecting structure for the anti-explosion film and the cover plate has the obvious advantages that the connection is reliable, the sealing property is excellent and the anti-explosion film is protected.

Description

The syndeton of a kind of rupture pressure disc and cover plate

Technical field:

The present invention relates to a kind of lithium cell component structure, the syndeton of particularly a kind of rupture pressure disc and cover plate.

Background technology:

Rupture pressure disc is the strength member of lithium battery; The quality of its bursting property is an aspect; The syndeton of it and cover plate relates to sealing property and firm performance; The syndeton of existing rupture pressure disc and cover plate generally adopts pressure ring and rupture pressure disc compression fit or gluing or technical measures that both adopt simultaneously, because the contact area of pressure ring and rupture pressure disc is bigger, and generation leakage often in the use.

Summary of the invention:

The object of the invention provides a kind of connect reliable and the rupture pressure disc of good seal performance and the syndeton of cover plate.Another object of the present invention provides a kind of structure of protecting rupture pressure disc.The technical scheme that realizes the object of the invention is; The syndeton of a kind of rupture pressure disc and cover plate; Comprise cover plate, pressure ring and rupture pressure disc,, it is characterized in that: the structure of said pressure ring is that any following (1) pressure ring is the annular slab that the hole is established at the center; The upper end of this pressure ring is provided with the step annular solid of minor diameter; Ring surface and following ring surface in the formation, for closely cooperating, the following ring surface of above-mentioned pressure ring is lower than the nozzle end face of said rupture pressure disc between the recess sidewall of the outer peripheral face of pressure ring and the barrel of rupture pressure disc and cover plate; The pressure ring centre bore is relative with cover plate bottom portion of groove centre bore, through the plate body riveting to cover plate groove port plate body distortion and rupture pressure disc nozzle is pressed on the following ring surface of above-mentioned pressure ring and forms sealing; (2) pressure ring is the annular slab that the hole is established at the center, and the outer surface of pressure ring is the big top and small bottom conical surface.The structure at the explosion-proof position of said rupture pressure disc is any of following structure: (1) film body is provided with to evagination or inwardly prominent spherical film; On the outer surface of the adjacent film of spherical film therewith or inner surface, be provided with cross sectional shape and be the cannelure of square, triangle or arc; The angle of said square groove and the wedge angle of vee gutter are arc angle, and said cannelure is cannelure, open annular groove or the discrete deep-slotted chip breaker of sealing; (2) film body is provided with to evagination or inwardly prominent spherical film, and the inner surface or the outer surface of this spherical film are provided with cannelure, and the inner surface of said spherical film or the cross sectional shape of the spherical groove on the outer surface are triangle, polygon, in-line or arc.The hole that is provided with outwards outstanding cover and cover plate bottom at the cover plate bottom portion of groove is relative, and the hole wall of pressure ring is provided with dowel and perhaps changes the centre bore of pressure ring into a plurality of small diameter bore.The present invention and prior art relatively have be connected reliable with good seal performance and the remarkable advantage that protects rupture pressure disc is arranged.

Description of drawings:

Fig. 1 is a not riveting status structural representation of rupture pressure disc of the present invention, pressure ring and cover plate, and Fig. 2 is the A place partial enlarged drawing of Fig. 1, the another kind of structure partial enlarged drawing in the A place of Fig. 3 Fig. 1; Fig. 4 is rupture pressure disc, pressure ring and cover plate riveting status structural representation; Fig. 5 is the B place partial enlarged drawing of Fig. 4, and Fig. 6 is the B place riveted structure enlarged drawing of Fig. 4, and Fig. 7 is a cover plate of the present invention; Pressure ring and rupture pressure disc be the third structural representation of riveting status not; Fig. 8 is the A place partial enlarged drawing of Fig. 7, and Fig. 9 is the local another kind of structural representation in the A place of Fig. 7, and Figure 10 is the third structural representation of cover plate of the present invention, pressure ring and rupture pressure disc riveting status; Figure 11 is the local riveting status structural representation that amplifies in Figure 10 A place; Figure 12 is local the third structural representation that amplifies in Figure 10 A place, and Figure 13 is the structural representation that cover plate of the present invention is provided with protective cover, and Figure 14 is the local structure for amplifying sketch map of Figure 13.

Embodiment:

The syndeton that the present invention takes is; The groove of the cylindrical body of rupture pressure disc 1 and cover plate 2 matches; Pressure ring 3 and the barrel of rupture pressure disc and cooperating of cover plate recess sidewall for closely cooperating; Pressure ring is the annular slab that the hole is established at the center, and the step annular solid that its upper end is provided with minor diameter forms upper and lower two ring surfaces, and the port of rupture pressure disc cylindrical shell is higher than the following ring surface of above-mentioned pressure ring upper end and is lower than the upper surface of cover plate.The center at the explosion position of rupture pressure disc outwards has or inwardly prominent spherical film 4; Be provided with the cannelure 5 that the cross section is square, triangle or arc at the outer surface of the adjacent film body of spherical film therewith or inner surface; The explosion position of above-mentioned rupture pressure disc; Be spherical film with its adjacent film body on square, triangle or the cannelure of arc, the explosion position of this rupture pressure disc is relative with the pressure ring hole with the hole of cover plate bottom portion of groove.The assemble method of rupture pressure disc, pressure ring and cover plate is; Earlier rupture pressure disc is placed the groove of cover plate; Then with pressure ring be pressed into rupture pressure disc the tube in pressure ring, rupture pressure disc and cover plate are closely linked into an integrated entity; At last the groove port of cover plate is carried out riveting and make its inwardly distortion downwards, this deformable body compresses the following annular end face of rupture pressure disc port and pressure ring to form and seals.The face of cylinder of pressure ring can be the big top and small bottom conical surface, makes the cover plate distortion will prevent that the explosion distortion is pressed on formation sealing on the ring body through riveting, and minor diameter step arcwall face can be established in the upper end of this cone pressure ring, also can not establish this minor diameter step body.In order to realize protection to rupture pressure disc, to avoid in the processing circular flow, damaging, cover plate and pressure ring work are improved as follows: the bottom portion of groove of cover plate is provided with the spherical covering of outwards outstanding cover 6 with rupture pressure disc, and this has hole 7 on covering; The hole wall of pressure ring is provided with the cross muscle or makes the pressure ring hole into a plurality of apertures.On the hole wall of cover plate bottom portion of groove, be provided with two pointed bodies that stretch out to the aperture at least, this pointed body can save on the adjacent film body of rupture pressure disc and spherical film cannelure is set.

Claims

1. the syndeton of rupture pressure disc and cover plate; Comprise cover plate, pressure ring and rupture pressure disc; It is characterized in that: the structure of said pressure ring is following any: (1) pressure ring is the annular slab that the hole is established at the center, and the upper end of this pressure ring is provided with the step annular solid of minor diameter, ring surface and following ring surface in the formation; Between the recess sidewall of the outer peripheral face of pressure ring and the barrel of rupture pressure disc and cover plate for closely cooperating; The following ring surface of above-mentioned pressure ring is lower than the nozzle end face of said rupture pressure disc, and the pressure ring centre bore is relative with cover plate bottom portion of groove centre bore, through the plate body riveting to cover plate groove port plate body distortion and rupture pressure disc nozzle is pressed on the following ring surface of above-mentioned pressure ring and forms sealing; (2) pressure ring is the annular slab that the hole is established at the center, and the outer surface of pressure ring is the big top and small bottom conical surface.

2. the syndeton of a kind of rupture pressure disc as claimed in claim 1 and cover plate; It is characterized in that: the structure at the explosion-proof position of said rupture pressure disc is any of following structure: (1) film body is provided with to evagination or inwardly prominent spherical film; On the outer surface of the adjacent film of spherical film therewith or inner surface, be provided with cross sectional shape and be the cannelure of square, triangle or arc; The angle of said square groove and the wedge angle of vee gutter are arc angle, and said cannelure is cannelure, open annular groove or the discrete deep-slotted chip breaker of sealing; (2) film body is provided with to evagination or inwardly prominent spherical film, and the inner surface or the outer surface of this spherical film are provided with cannelure, and the inner surface of said spherical film or the cross sectional shape of the spherical groove on the outer surface are triangle, polygon, in-line or arc.

3. the syndeton of rupture pressure disc as claimed in claim 1 and cover plate; It is characterized in that: the hole that is provided with outwards outstanding cover and cover plate bottom at the cover plate bottom portion of groove is relative, and the hole wall of pressure ring is provided with dowel and perhaps changes the centre bore of pressure ring into a plurality of small diameter bore.