CN205920995U - Upset piece, rupture disk and apron integrated into one piece's battery top cap - Google Patents

Abstract

The utility model relates to a technical field of battery discloses upset piece, rupture disk and apron integrated into one piece's battery top cap, sets up the upper end opening at the casing of battery, including being flaky apron, rupture disk and upset piece, integrated into one piece between apron, rupture disk and the upset piece, just rupture disk and upset piece looks interval arrangement. Compared with the prior art, the utility model provides an upset piece, rupture disk and apron integrated into one piece's battery top cap, rupture disk and upset piece shaping are in the apron, and apron, rupture disk and upset piece be integrated into one piece, like this, then need not part and independently make shaping apron, rupture disk and upset piece, practice thrift manufacturing cost greatly, and to the battery top cap, can not have the process that apron, upset piece and rupture disk assembled each other, the assembly of simplification battery top cap.

Description

Rotating sheet, rupture disk and the integrally formed battery cap of cover plate

Technical field

This utility model is related to the technical field of battery, more particularly, to rotating sheet, rupture disk and the integrally formed electricity of cover plate Pond top cover.

Background technology

At present, with the increasingly miniaturization of electronic product, lighting and Portable belt, such as video camera, notebook and handss Machine etc., the driving power supply of these electronic products also develops towards the direction of high power capacity, high security and lighting, lithium battery with The good characteristics such as its high power capacity, are widely used in electronic product.

Lithium battery includes housing, cover plate and battery core etc., and wherein battery core is placed in the inside of housing, on the upper end of housing has End opening, cover plate is then enclosed in the opening of the upper end of housing, then by forming electrode terminal on the cover board, then can be by lithium electricity Pond is electrically connected with outside electronic component, realizes power supply.

Battery core as the power storage element of lithium battery, when using, understand because the factor such as charger by lithium battery, and with lithium Inside battery chemical reaction, enclosure interior can produce abnormal gas, leads to the enclosure interior pressure of lithium battery excessive, if housing Internal pressure kept increase, then the internal pressure of lithium battery being led to excessive, thus there is lithium battery explosion accident, gently then damaging Bad electronic product is heavy then injure user.

In prior art, when the internal pressure of lithium battery is excessive, in order to prevent lithium battery from exploding, need the shell of battery Internal pressure leaks, and current explosion-proof method is setting rupture disk on the cover plate of lithium battery, when the internal pressure mistake of lithium battery When big, leaked pressure by rupture disk explosion.In addition, when the internal pressure kept of lithium battery increases, in order to prevent lithium battery Directly explosion, is provided with rotating sheet, when the internal pressure of lithium battery exceedes certain value, rotating sheet is then on the cover plate of lithium battery Can overturn upward so that short circuit between the positive pole of lithium battery and negative pole, lithium battery quits work, thus the internal pressure of lithium battery Also will not be with increase, if the effect of rotating sheet was lost efficacy, the pressure of lithium battery interior persistently increases, and after arrival certain value, Then can be by rupture disk explosion.

In existing lithium battery, cover plate all can arrange rupture disk and rotating sheet simultaneously, but, rupture disk, rotating sheet with And cover plate is all independently to process, then, then by rotating sheet and rupture disk pass through respectively to be welded to connect on the cover board, this Sample, not only increases manufacturing cost, and assembling process complexity is loaded down with trivial details.

Utility model content

The purpose of this utility model is to provide rotating sheet, rupture disk and the integrally formed battery cap of cover plate it is intended to solve Certainly in the battery cap of prior art, rotating sheet, rupture disk and cover plate are independently to process, and then reassemble together, There is a problem of increasing processing cost and assembling process is complicated loaded down with trivial details.

This utility model is achieved in that rotating sheet, rupture disk and the integrally formed battery cap of cover plate, is arranged on electricity The upper end open of the housing in pond, including cover plate in the form of sheets, rupture disk and rotating sheet, described cover plate, rupture disk and rotating sheet Between be integrally formed, and described rupture disk is separately arranged with rotating sheet.

Further, described cover plate is formed with blast hole and tumble port, described blast hole and tumble port are separately arranged, Described rupture disk is formed in described blast hole, and closes described blast hole, and described rotating sheet is formed in described tumble port, and closes Described tumble port.

Further, described rupture disk is carved and be provided with groove trace.

Further, described blast hole and rupture disk oval in shape.

Further, described rupture disk is arranged on the bottom of described blast hole, and the lower surface of described rupture disk with described The lower surface of cover plate is concordantly arranged.

Further, the middle part of described rotating sheet is projecting down, formation middle part ledge, and described rotating sheet The upper end of middle part ledge is provided with abutting post.

Further, the periphery of described rotating sheet is formed on the side wall of described tumble port, and the side wall of described rotating sheet It is downwardly inclined arrangement, forms sloped sidewall, described sloped sidewall meets at described middle part ledge.

Further, described middle part ledge is in horizontal tabular setting.

Further, along described rotating sheet periphery to middle part direction, the thickness of described rotating sheet is gradually increased.

Further, the periphery of described rotating sheet is formed with horizontally disposed connection ring, and described connection ring is connected to described The side wall of tumble port.

Compared with prior art, this utility model provides rotating sheet, rupture disk and the integrally formed battery cap of cover plate, Rupture disk and rotating sheet are molded in cover plate, and cover plate, rupture disk and rotating sheet are integrally formed, so, then do not need point Open and be independently manufactured cover plate, rupture disk and rotating sheet, greatly save manufacturing cost, and for battery cap, Bu Huicun In the process of cover plate, rotating sheet and rupture disk mutually assembling, simplify the assembling of battery cap.

Brief description

Rotating sheet, rupture disk and the integrally formed battery cap of cover plate that Fig. 1 provides for this utility model embodiment vertical Body schematic diagram；

Fig. 2 is cuing open of rotating sheet, rupture disk and the integrally formed battery cap of cover plate that this utility model embodiment provides Cut schematic diagram；

Fig. 3 is the enlarged diagram at a in Fig. 2；

Fig. 4 is the enlarged diagram at the b in Fig. 2.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.

Below in conjunction with specific embodiment, realization of the present utility model is described in detail.

With reference to the preferred embodiment shown in Fig. 1～4, providing for this utility model.

Rotating sheet 13, rupture disk 12 and the integrally formed battery cap 1 of cover plate 11 that the present embodiment provides, are used in lithium electricity On the cover plate 11 in pond, certainly, it, with being not limited to lithium battery, can also be in other various batteries, such as chargeable Battery etc..

Rotating sheet 13, rupture disk 12 and the integrally formed battery cap 1 of cover plate 11 include cover plate 11, rupture disk 12 and turn over Rotor 13, wherein, cover plate 11, rupture disk 12 and rotating sheet 13 are formed in one, cover plate 11 in the form of sheets, rupture disk 12 and upset Piece 13 is respectively formed in cover plate 11, and rupture disk 12 and rotating sheet 13 are separately arranged.

In actual use, rotating sheet 13, rupture disk 12 and the integrally formed battery cap 1 of cover plate 11 are arranged on battery The upper end open of housing that is to say, that cover plate 11 is sealed on the upper end open of housing, so, when pressure in battery increases, It is exactly the pressure increase in housing, first, when pressure is more than certain value, generally, the setting value of pressure is 0.5mpa, Rotating sheet 13 then can overturn upward so that the positive pole of battery is short-circuit with negative pole, it is to avoid the pressure in housing continues to increase；Work as upset The effect of piece 13 was lost efficacy, or when the pressure in housing persistently increases, when pressure is more than certain value, generally, pressure Setting value be 0.8mpa, rupture disk 12 then explosion under the effect of the pressure, the pressure in housing then can leak, whole to avoid Battery explosion.

The rotating sheet 13 of above-mentioned offer, rupture disk 12 and the integrally formed battery cap 1 of cover plate 11, rupture disk 12 and upset Piece 13 is molded in cover plate 11, and cover plate 11, rupture disk 12 and rotating sheet 13 are integrally formed, so, does not then need separately Independently it is manufactured cover plate 11, rupture disk 12 and rotating sheet 13, greatly save manufacturing cost, and for battery cap 1, no Can there is the process of cover plate 11, rotating sheet 13 and rupture disk 12 mutually assembling, simplify the assembling of battery cap 1.

In the present embodiment, cover plate 11 is formed with blast hole 111 and tumble port 112, blast hole 111 and tumble port 112 Separately arrange, rupture disk 12 is formed in blast hole 111, and enclose blast hole 111, rotating sheet 13 is formed at tumble port In 112, and enclose tumble port 112.By rupture disk 12 and rotating sheet 13 being correspondingly arranged at blast hole 111 respectively and turning over In turn hole 112, when the pressure in housing increases, be conducive to the air pressure in housing to concentrate and act on rupture disk 12 and upset On piece 13, greatly enhance reaction sensitivity and the precision of rupture disk 12 and rotating sheet 13.

Specifically, blast hole 111 and rupture disk 12 are in ellipticity, and certainly, blast hole 111 and rupture disk 12 can also be in it His various shapes, such as toroidal, or different form etc..

For the ease of the quick bursting of rupture disk 12, rupture disk 12 is carved and is provided with groove trace, groove trace can be in multiple shapes Shape is arranged.

Rupture disk 12 is arranged on the bottom of blast hole 111, and the lower surface of rupture disk 12 is concordant with the lower surface of cover plate 11 Setting, so, upper opening, and the explosion recess hole with rupture disk 12 as bottom are then formed at the top of blast hole 111, work as housing When interior pressure increases, be conducive to rupture disk 12 explosion upward.

In the present embodiment, the middle part of rotating sheet 13 is projecting down, is formed in middle part ledge, and rotating sheet 13 The upper end of portion's ledge is provided with abutting post 133, and so, when the pressure in housing increases to certain value, air pressure is made On whole rotating sheet 13, rotating sheet 13 is arched upward upward and is connected with electrode so that abutting post 133, realize the positive pole of battery with Negative pole short circuit.

Specifically, the periphery of rotating sheet 13 is formed on the side wall of tumble port 112, and the side wall of rotating sheet 13 is downwardly inclined Setting, forms sloped sidewall 132, and sloped sidewall 132 meets at middle part ledge, so, under the pressure of air, is conducive to Rotating sheet 13 overturns upward.

For the ease of abutting the setting of post 133, the middle part ledge of rotating sheet 13 is in that horizontal plate is arranged, certainly, according to It is actually needed, middle part ledge can also be the setting of other various shapes.In addition, abutting upper end and the cover plate 11 of post 133 Upper surface flush arrangement, when rotating sheet 13 does not overturn, it is to avoid abuts post 133 and abuts with outside.

In addition, for the ease of being integrally formed between rotating sheet 13 and cover plate 11, the periphery of rotating sheet 13 is formed with level The connection ring 131 of shape arrangement, this connection ring 131 is connected on the side wall of tumble port 112；For the ease of the upset of rotating sheet 13, Along rotating sheet 13 periphery to middle part direction, the thickness of rotating sheet 13 is gradually increased, so that is to say, that rotating sheet 13 The thickness of periphery is the thinnest.

In the present embodiment, the rounded shape of tumble port 112, so, when rotating sheet 13 is formed in tumble port 112, it is easy to turn over Rotor 13 overturns down.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this Any modification, equivalent and improvement made within the spirit of utility model and principle etc., should be included in this utility model Protection domain within.

Claims (7)

1. rotating sheet, rupture disk and the integrally formed battery cap of cover plate, are arranged on the upper end open of the housing of battery, its feature It is, including cover plate in the form of sheets, rupture disk and rotating sheet, be integrally formed between described cover plate, rupture disk and rotating sheet, and Described rupture disk and rotating sheet are separately arranged；Blast hole and tumble port, described blast hole and upset are formed with described cover plate Hole is separately arranged, described rupture disk is formed in described blast hole, and close described blast hole, described rotating sheet formed described in turn over In turn hole, and close described tumble port；Described rupture disk is arranged on the bottom of described blast hole, and the lower surface of described rupture disk Concordant with the lower surface of described cover plate arrange；The periphery of described rotating sheet is formed with horizontally disposed connection ring, described connection ring It is connected to the side wall of described tumble port.

2. rotating sheet as claimed in claim 1, rupture disk and the integrally formed battery cap of cover plate are it is characterised in that described Carve on rupture disk and be provided with groove trace.

3. rotating sheet as claimed in claim 1, rupture disk and the integrally formed battery cap of cover plate are it is characterised in that described Blast hole and rupture disk oval in shape.

4. the rotating sheet as described in any one of claims 1 to 3, rupture disk and the integrally formed battery cap of cover plate, its feature It is, the middle part of described rotating sheet is projecting down, form middle part ledge, and the middle part ledge of described rotating sheet Upper end be provided with abutting post.

5. rotating sheet as claimed in claim 4, rupture disk and the integrally formed battery cap of cover plate are it is characterised in that described The periphery of rotating sheet is formed on the side wall of described tumble port, and the side wall of described rotating sheet is downwardly inclined arrangement, is formed and Side wall, described sloped sidewall meets at described middle part ledge.

6. rotating sheet as claimed in claim 4, rupture disk and the integrally formed battery cap of cover plate are it is characterised in that described Middle part ledge is in horizontal tabular setting.

7. rotating sheet as claimed in claim 4, rupture disk and the integrally formed battery cap of cover plate it is characterised in that along The periphery of described rotating sheet to middle part direction, the thickness of described rotating sheet is gradually increased.