CN209232864U

CN209232864U - Button cell

Info

Publication number: CN209232864U
Application number: CN201822041441.2U
Authority: CN
Inventors: 刘秦
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2019-08-09
Anticipated expiration: 2028-12-06

Abstract

The utility model relates to a kind of button cells, comprising: cell cup, inner hollow and open at one end；Battery cover, inner hollow and open at one end, the open end of battery cover is located on the inside of the open end of cell cup, and the open end of battery cover is at least partly overlapped with the open end of cell cup, and the height of intersection is less than or equal to the height of battery cover；Insulated enclosure circle is set between cell cup and battery cover, and cell cup and battery cover are electrically completely cut off；Battery core, be arranged in cell cup, battery cover and insulated enclosure corral at accommodating cavity in, the bottom end of battery core and cell cup are electrically connected；And at least one second output conductor, it is stretched out from the top of battery core, and be electrically connected after turning down the outer circumferential for being located at battery core with battery cover.This button cell may be implemented to automate installation between battery core and pole shell.

Description

Button cell

Technical field

The utility model relates to the technical fields of battery, more particularly to button cell.

Background technique

With the development of portable electronic product and intelligence wearing electronic product, battery is required more to be miniaturized.? While holding compared with the high life, it is desirable that battery has energy density per unit volume as high as possible, specific energy.Inside button cell In the limited situation in space, above-mentioned purpose is realized, and the stability and leakproofness of structure need to be kept, manufacturing cost is relatively high.

Wherein, the mechanical connection between the core of button cell and positive and negative anodes shell and electronics connection are that button cell manufactured A very stubborn problem in journey.Currently, the mode that core generallys use welding with positive and negative anodes shell is electrically connected, specifically Ground, the output conductor of core need to be welded in the inner bottom wall of positive and negative anodes shell, it constrains the production efficiency of button cell, needs to increase Add the investment of special equipment, so that production cost is higher, and is not easy to realize automated production.

Utility model content

Based on this, it is necessary to for the problem that button cell installation is inconvenient, provide one kind may be implemented battery core and pole shell it Between automate the button cell of installation.

A kind of button cell, comprising:

Cell cup, inner hollow and open at one end；

Battery cover, inner hollow and open at one end, the open end of the battery cover is located at the open end of the cell cup Inside, and the open end of the battery cover is at least partly overlapped with the open end of the cell cup, the height of intersection is less than Or the height equal to the battery cover；

Insulated enclosure circle is set between the cell cup and the battery cover, and by the cell cup and the battery cover Electrically isolation；

Battery core, be arranged in the cell cup, the battery cover and the insulated enclosure corral at accommodating cavity in, the electricity The bottom end of core and the cell cup are electrically connected；And

At least one second output conductor is stretched out from the top of the battery core, and is turned down and be located at all outside of the battery core It is electrically connected behind side with the battery cover.

Above-mentioned button cell is electrically connected by the way that the fold of the second output conductor to be located at behind the outer circumferential of battery core with battery cover It connects, so that battery core and battery cover do not need to increase the investment of special equipment, simple, easy realization battery core and battery cover when installing Electrical connection.The connection of the inner sidewall of second output conductor and battery cover can be more easier to operate when installation, only need to compress Cooperation.The battery core of this button cell and the connection type of pole shell are reliable, it is easy to accomplish automated production reduces manufacture Cost.

The height of the battery cover is less than the height of the cell cup in one of the embodiments,.Convenient for cell cup with Battery cover is coupled, and forms the output of two kinds of electrodes.

In one of the embodiments, the battery cover include the second bottom wall and on second bottom wall periphery Two circumferential side walls, second circumferential side wall and second output conductor are electrically connected.Convenient for the second output conductor and battery The electric connection of lid.

In one of the embodiments, the insulated enclosure circle include main part and by main part extend internally in it is curved Portion, the main part are interposed between the cell cup and the battery cover, and the interior turn of bilge is located at the opening of the battery cover Below the end and end of the interior turn of bilge is no more than second circumferential side wall.So that insulated enclosure circle will not occupy battery cover Inner space can promote the capacity of battery core.

It in one of the embodiments, further include the second positioning ring being sheathed on the top of the battery core, described second Output conductor is stretched out from the battery core, and is turned down on the outer circumferential of the battery core, second positioning ring respectively with it is described Second output conductor, the battery cover are electrically connected.It is closely fitted by the inner sidewall of the second positioning ring and the second output conductor, Lateral wall is abutted with the second circumferential side wall of battery cover, can be stablized, firmly be realized the of the second output conductor and battery cover Two circumferential side walls are electrically connected.

It in one of the embodiments, further include the second positioning ring being sheathed on the top of the battery core, described second Output conductor is stretched out from the battery core, and is turned down to the outer circumferential of second positioning ring, so that second output is led Body is connected between second positioning ring and second circumferential side wall.The second output conductor is compressed by the second positioning ring Onto the second circumferential side wall of battery cover so that the second circumferential side wall of the second output conductor and battery cover be engaged it is more firm Gu being electrically connected more stable.

First pole piece is equipped at least one first output conductor in one of the embodiments, and described first is defeated Conductor is stretched out from the battery core out, and is electrically connected after turning down the outer circumferential for being located at the battery core with the cell cup. It is electrically connected by the way that the fold of the first output conductor to be located at behind the outer circumferential of battery core with cell cup, so that battery core and cell cup are pacified The investment of increase special equipment is not needed when dress, simple, easy realization battery core is electrically connected with cell cup.First output conductor It is to be connect with the inner sidewall of cell cup, can be more easier to operate when installation, only need compression fit.

In one of the embodiments, the cell cup include the first bottom wall and on first bottom wall periphery One circumferential side wall, first circumferential side wall and first output conductor are electrically connected.Convenient for the first output conductor and battery The electric connection of cup.

It in one of the embodiments, further include the first positioning ring, first positioning ring is in the sleeve that both ends are open Shape, and be sheathed on the bottom end of the battery core, first output conductor is circumferential with described first by first positioning ring Side wall is electrically connected.First positioning ring can make the first circumferential side wall of the first output conductor and cell cup be electrically connected more Stablize.

First output conductor is stretched out from the battery core in one of the embodiments, and is turned down to the battery core On outer circumferential, first positioning ring is sheathed in the battery core, and respectively with first output conductor, the cell cup It is electrically connected.It is closely fitted by the inner sidewall of the first positioning ring and the first output conductor, first week of lateral wall and cell cup It is abutted to side wall, can stablize, firmly realize that the first circumferential side wall of the first output conductor and cell cup is electrically connected.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of one embodiment of the utility model button cell；

Fig. 2 is the structure for the embodiment one that battery cover shown in Fig. 1 in button cell and the second output conductor are coupled Schematic diagram；

Fig. 3 is the structure for the embodiment two that battery cover shown in Fig. 1 in button cell and the second output conductor are coupled Schematic diagram；

Fig. 4 is the structural schematic diagram of one embodiment of the second positioning ring in button cell shown in Fig. 1；

Fig. 5 is the structure for the embodiment three that battery cover shown in Fig. 1 in button cell and the second output conductor are coupled Schematic diagram；

Fig. 6 is the structural schematic diagram of another embodiment of the second positioning ring in button cell shown in Fig. 1；

Fig. 7 is the structure for the example IV that battery cover shown in Fig. 1 in button cell and the second output conductor are coupled Schematic diagram；

Fig. 8 is the structural schematic diagram of one embodiment of battery core in button cell shown in Fig. 1；

Fig. 9 is the structural schematic diagram of another embodiment of battery core in button cell shown in Fig. 1；

Figure 10 is the structural schematic diagram of the battery cover and the cooperation of insulated enclosure circle in button cell shown in Fig. 1.

In attached drawing, parts list represented by the reference numerals are as follows:

10, button cell；20, cell cup；21, the first bottom wall；22, the first circumferential side wall；23, first end crimping；30, Battery cover；31, the second bottom wall；32, the second circumferential side wall；40, insulated enclosure circle；41, main part；42, interior turn of bilge；50, it accommodates Chamber；60, battery core；61, the first pole piece；62, the second pole piece；63, diaphragm；64, the first output conductor；65, the second output conductor； 70, the second positioning ring；71, in-flanges；72, the first positioning ring；73, flanging；74, insulating layer, 80, cavity, 90, stop adhesive Band.

Specific embodiment

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs The limitation for the specific implementation opened.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Each technical characteristic of embodiment described above It can be combined arbitrarily, for simplicity of description, not to all possible combination of each technical characteristic in above-described embodiment It is all described, as long as being all considered to be the model of this specification record however, there is no contradiction in the combination of these technical features It encloses.

Referring to Fig. 1, in an embodiment of the utility model, button cell 10, comprising: cell cup 20, battery cover 30, absolutely Edge sealing ring 40, battery core 60 and at least one second output conductor 65.20 inner hollow of cell cup and open at one end.Battery cover 30 Inner hollow and open at one end, the open end of battery cover 30 be located at the inside of the open end of cell cup 20, and battery cover 30 is opened Mouth end is at least partly overlapped with the open end of cell cup 20, and the height of intersection is less than or equal to the height of battery cover 30.Absolutely Edge sealing ring 40 is set between cell cup 20 and battery cover 30, by insulated enclosure circle 40 that cell cup 20 and battery cover 30 is electrical Isolation.Battery core 60 is arranged in the accommodating cavity 50 that cell cup 20, battery cover 30 and insulated enclosure circle 40 surround, the bottom end of battery core 60 It is electrically connected with cell cup 20.Also, battery core 60 includes the first pole piece 61, the second pole piece 62 and diaphragm 63, the first pole piece 61 with It is spaced between second pole piece 62 by diaphragm 63, the first pole piece 61, the second pole piece 62 and diaphragm 63 are made up of stacking or winding Battery core 60.At least one second output conductor 65 is stretched out from the top of battery core 60, and is turned down behind the outer circumferential of battery core 60 It is electrically connected with battery cover 30.Specifically, the second output conductor 65 can be by drawing on the second pole piece 62.The utility model button Battery 10 is electrically connected by the way that the fold of the second output conductor 65 to be located at behind the outer circumferential of battery core 60 with battery cover 30, so that Battery core 60 and battery cover 30 do not need to increase the investment of special equipment, simple, easy realization battery core 60 and battery cover when installing 30 electrical connection.Second output conductor 65 is connect with the inner sidewall of battery cover 30, can be more easier to operate when installation, only Need compression fit.The battery core 60 of this button cell 10 and the connection type of pole shell are reliable, it is easy to accomplish automated production, Reduce manufacturing cost.

It should be noted that in a specific embodiment, cell cup 20 can be anode cover, and battery cover 30 can be cathode Shell.First pole piece 61 can be positive plate, and the second pole piece 62 can be negative electrode tab.First output conductor 64 can be anode output Conductor, the second output conductor 65 can be cathode output conductor.The main material of positive plate is nickle cobalt lithium manganate, and base material is aluminium Foil.The main material of negative electrode tab is artificial graphite, and base material is copper foil.

In one embodiment, the height of battery cover 30 is less than the height of cell cup 20, and the height of battery cover 30 can be small In the height 30%~70% of cell cup 20.Can being coupled in order to cell cup 20 and battery cover 30, and form two kinds The output of positive and negative electrode.

Please continue to refer to Fig. 1, in one embodiment, battery cover 30 is including the second bottom wall 31 and is set to the second bottom wall 31 The second circumferential side wall 32 on periphery, the second circumferential side wall 32 is adjacent to the second output conductor 65, and is electrically connected.

Referring to Fig. 2, in the embodiment one that battery cover 30 and the second output conductor 65 are coupled, the second output conductor 65 stretch out from the top of battery core 60, and turn down and be located on the outer circumferential of battery core 60, and battery cover 30 is sheathed on the top of battery core 60 On, and the second circumferential side wall 32 is adjacent to the second output conductor 65, and is electrically connected.Realize the second output conductor 65 and second week It is electrically connected to stablizing for side wall 32, fit structure is simpler easy.

Fig. 3 and Fig. 4 are please referred to, in the embodiment two that battery cover 30 and the second output conductor 65 are coupled, further includes Second positioning ring 70.Second positioning ring 70 is sheathed on the top of battery core 60, the second output conductor 65 and the second circumferential side wall 32 It is electrically connected.In concrete operations, the second positioning ring 70 is sheathed in battery core 60, and the fold of the second output conductor 65 is located at the second positioning On the outer circumferential of ring 70.Battery cover 30 is sheathed on the second positioning ring 70, and it is fixed so that the second output conductor 65 is connected to second Position ring 70 and the second circumferential side wall 32.Second output conductor 65 is pressed to the second circumferential side wall 32 by the second positioning ring 70 On so that the second output conductor 65 be engaged with the second circumferential side wall 32 it is stronger.

On the basis of the above embodiments, the second positioning ring 70 can use plastic part resistant to chemical etching, resistant to chemical etching Plastic part is sheathed on the outer circumferential of battery core 60, and the second output conductor 65 and the second circumferential side wall 32 are compressed tightly, is realized Second output conductor 65 is electrically connected with the stabilization of battery cover 30.

Referring to Fig. 5, being in above-mentioned implementation in the embodiment three that battery cover 30 and the second output conductor 65 are coupled The improvement carried out on the basis of example two.Specifically, the second output conductor 65 is stretched out from the top of battery core 60, and is turned down and be located at battery core On 60 outer circumferential.Second positioning ring 70 is sheathed on the outer circumferential of battery core 60, and the second output conductor 65 is compressed.Electricity Pond lid 30 is sheathed on the second positioning ring 70.Second positioning ring 70 is electrically connected with the second output conductor 65, battery cover 30 respectively. It being closely fitted by the inner sidewall of the second positioning ring 70 and the second output conductor 65, lateral wall is abutted with the second circumferential side wall 32, It can stablize, firmly realize that the second output conductor 65 and the second circumferential side wall 32 are electrically connected.

Specifically, the second positioning ring 70 can be the first becket.First becket wall thickness is 0.05mm~0.25mm, high Degree is no more than the height of 30 inner sidewall conductive region of battery cover.The fold of second output conductor 65 is located at the outer circumferential of battery core 60 On, then metal ring is located on the top of battery core 60, becket respectively with the second output conductor 65,32 electricity of the second circumferential side wall Connection, can make the second output conductor 65 be electrically connected with battery cover 30 more stable, and it is more convenient to assemble.It needs to illustrate It is that becket can choose copper ring, nickel ring, stainless steel ring etc., the electrical property for being able to achieve the second output conductor 65 and battery cover 30 connects It connects, herein with no restriction.

Referring to Fig. 6, on the basis of the above embodiments, further, one end of the second positioning ring 70 is equipped with in-flanges 71.In-flanges 71 withholds the junction of the end face on the outer circumferential of battery core 60 and the top of battery core 60, then battery cover 30 is tight It is placed on the outside of the second positioning ring 70.Can make the second output conductor 65, the second positioning ring 70, the second circumferential side wall 32 it Between formed and be closely fitted, realize that stablizing for the second output conductor 65 and battery cover 30 is electrically connected.Specifically, second positioning ring 70 Material is 304 stainless steels, and wall thickness 0.1mm, a height of 0.6mm of ring, 71 length of in-flanges is 1.5mm.The setting of in-flanges 71 can It is more preferable with the close-fitting constraint to battery core 60, and be more conducive to assembling, high production efficiency, it is easy to accomplish production automation.

Referring to Fig. 7, in the example IV that battery cover 30 and the second output conductor 65 are coupled, the second positioning ring 70 Be sheathed on the top of battery core 60, the second output conductor 65 from the top of battery core 60 stretch out after, along in-flanges 71 inner wall, second The circumferential inner sidewall of positioning ring 70 extends, and turns down between the second positioning ring 70 and the second circumferential side wall 32, and realization second is defeated Conductor 65 and the second circumferential side wall 32 are electrically connected out.The setting structure of this second output conductor 65 can make second to determine Position ring 7, battery cover 30 crimp that range is bigger, and installation is more stable with the cooperation of battery core 60.

In another embodiment, the first pole piece 61 is equipped at least one first output conductor 64, the first output conductor 64 It stretches out from the bottom end of battery core 60, and is electrically connected after turning down the outer circumferential for being located at battery core 60 with the formation of cell cup 20.By by The fold of one output conductor 64 is electrically connected after being located at the outer circumferential of battery core 60 with cell cup 20, so that battery core 60 and cell cup 20 The investment of increase special equipment is not needed when installation, simple, easy realization battery core 60 is electrically connected with cell cup 20.First is defeated Conductor 64 is connect with the inner sidewall of cell cup 20 out, can be more easier to operate when installation, only be needed compression fit.

It should be noted that cell cup 20 and the first output conductor 64 are coupled structure, it is referred to above-mentioned battery Lid 30 and the second output conductor 65 are coupled the embodiment of structure.Specifically, cell cup 20 includes the first bottom wall 21 and sets In the first circumferential side wall 22 on 21 periphery of the first bottom wall, and the first circumferential side wall 22 is adjacent to the first output conductor 64, and electricity Property connection.

In the embodiment one that cell cup 20 and the first output conductor 64 are coupled, the first output conductor 64 is from battery core 60 It stretches out, and turns down and be located on the outer circumferential of battery core 60, and the first circumferential side wall 22 and the first output conductor 64 are electrically connected.

It further include the first positioning ring 72 in the embodiment two that cell cup 20 and the first output conductor 64 are coupled.The One positioning ring 72 is in the sleeve-shaped that both ends are open, and is sheathed on the Basolateral of battery core 60, and the first output conductor 64 passes through First positioning ring 72 and the first circumferential side wall 22 are electrically connected.

In the embodiment three that cell cup 20 and the first output conductor 64 are coupled, the first output conductor 64 is from battery core 60 It stretches out, and turns down to the outer circumferential of battery core 60.First positioning ring 72 is sheathed in battery core 60, and is led respectively with the first output Body 64, cell cup 20 are electrically connected.It is also possible to the first positioning ring 72 to be sheathed in battery core 60, the first output conductor 64 is from electricity Core 60 stretches out, and turns down to the outer circumferential of the first positioning ring 72, is supported the first output conductor 64 by the first positioning ring 72 Pressure is electrically connected with the first circumferential side wall 22.

Please continue to refer to Fig. 1, on the basis of above-described embodiment three, the first positioning ring 72 is porous structure, the first positioning Flanging 73 is additionally provided on one end of ring 72, the first positioning ring 72 is sheathed in battery core 60, and flanging 73 and the first peripheral side Wall 22 abuts, and the second end of the first positioning ring 72 is abutted with the first bottom wall 21.First positioning ring 72, flanging 73, the first bottom wall 21 and first form cavity 80 between circumferential side wall 22.First positioning ring 72 is electrically connected more by flanging 73 with cell cup 20 Stablize, and cavity 80 can store electrolyte using battery compartment to a greater extent, electrolyte can pass through the first positioning ring 72 Battery core 60 is penetrated into, battery core 60 is helped to generate more electric energy.

In one embodiment, insulated enclosure circle 40 includes main part 41 and the interior turn of bilge 42 to be extended internally by main part 41, Main part 41 is interposed between cell cup 20 and battery cover 30, and interior turn of bilge 42 is located at below the open end of battery cover 30 and interior turn of bilge 42 end is no more than the second circumferential side wall 32.So that insulated enclosure circle 40 will not occupy the inner space of battery cover 30, can mention Rise the capacity of battery core 60.

Referring to Fig. 8, in one embodiment, be spaced between the first pole piece 61 and the second pole piece 62 by diaphragm 63, and Roll into battery core 60.It should be noted that battery core 60 can be 61/ 63/ second pole piece of diaphragm of the first pole piece, 62/ diaphragm by sequence The pole piece group of 63 compositions is wound, and can also be the pole of 62/ 63/ first pole piece of diaphragm of the second pole piece, 61/ diaphragm 63 by sequence Piece group is wound.First output conductor 64 and the second output conductor 65 are equipped with one, and the first output conductor 64 is by being located at Outermost first pole piece 61 of battery core 60 is drawn, and the second output conductor 65 is drawn by being located at outermost second pole piece 62 of battery core 60 Out.It can be in order to the electric connection setting of the first output conductor 64 and cell cup 20 and the second output conductor 65 and battery cover 30 electric connection setting.Those skilled in the art can according to need the first output conductor 64 and the second output conductor 65 Extend from some position of 60 end face of battery core, herein with no restriction.

In addition, it should be noted that, being spaced between the first pole piece 61 and the second pole piece 62 by diaphragm 63, and roll into electricity After core 60, diaphragm 63 is to be located at outermost layer, and the outer circumferential of battery core 60 is wound fastening by terminal adhesive tape 90.

In another embodiment, it is spaced, and is stacked by diaphragm 63 between the first pole piece 61 and the second pole piece 62 Form battery core 60.Referring to Fig. 9, specifically, battery core 60 is by three layer of first pole piece, 61, four layer of second pole piece 62 and to be set to the Diaphragm 63 between one pole piece 61, the second pole piece 62 is laminated.First pole piece 61, the second pole piece 62 and diaphragm 63 are arranged to ellipse It is round.The end of every layer of first pole piece 61 is extended with the first connecting pin, the end of the first output conductor 64 and each first connecting pin Portion's connection.The end of every layer of second pole piece 62 is extended with second connection end, the second output conductor 65 and each second connection end End connection.Battery core 60 is wrapped up by organic insulation film seal.

In addition, the output conductor in the utility model refers to, why not the base metal foil of pole piece takes up an official post with functional coating Region.For positive plate, output conductor is the aluminium foil exposed.For negative electrode tab, output conductor is the copper foil exposed. Being electrically connected between pole piece and pole shell, is not limited by output conductor, can also be electrically connected by setting collector and the realization of pole shell It connects.Specifically, relative to output conductor, in order to realize needs that pole piece is electrically connected with pole shell, on output conductor with it is mechanical, The component or assembling parts of the material that can be electrically connected with pole shell, configuration that the modes such as physics, chemistry combine, are referred to as afflux Body.Being electrically connected for output conductor and pole shell is realized by collector.Simplest mode is that output conductor itself is used as afflux Body.

Referring to Fig. 10, in a cooperation embodiment of battery cover 30 and insulated enclosure circle 40, in order to preferably realize the Two output conductors 65 are electrically connected with the second circumferential side wall 32.A kind of suitable engineering plastics can be used in the opening of battery cover 30 Outer is molded to form insulated enclosure circle 40, so that most of region of the second circumferential side wall 32 is not by plastic wraps.Electricity After 30 edge curling seal of pond lid, on the basis of ensure that 10 good leakproofness of button cell, so that the second circumferential side wall 32 Conductive region can be contacted and be electrically connected with the second output conductor 65 well.

As shown in Figure 1, in order to enable the setting of insulated enclosure circle 40 is more stable, firm, cell cup 20 and battery cover 30 Insulating mounting it is also stronger.Cell cup 20 further includes first end crimping 23, and it is circumferential that first end crimping 23 is set to first On the one end of side wall 22 far from the first bottom wall 21.First end crimping 23 withholds outer circumferential and the insulation of insulated enclosure circle 40 On the junction of end face of the sealing ring 40 far from the first bottom wall 21.

In order to guarantee the insulation set between 60 both ends of battery core and cell cup 20, battery cover 30.In one embodiment, every 63 width of film is greater than the width of the first pole piece 61, the second pole piece 62.First pole piece 61, the second pole piece 62 and diaphragm 63 roll into electricity Core 60, and turn down to be formed there are two isolation part beyond the part of the first pole piece 61, the second pole piece 62 by 63 two sides of diaphragm, and two A isolation part is abutted with the inside bottom wall of the inside bottom wall of cell cup 20, battery cover 30 respectively.

It in another embodiment, further include insulating layer 74.Insulating layer 74 be set to battery core 60 bottom end and cell cup 20 it Between and/or the top and battery cover 30 of battery core 60 between.Insulating layer 74 is used for battery core 60 and cell cup 20 and/or battery cover 30 Electrical isolation.It avoids the electrode section of 60 end of battery core from leaking electricity, and is caused with cell cup 20 and/or the connection of 30 circuit of battery cover Using bad.It should be noted that insulating layer 74 is equipped with through-hole, the first output conductor 64 and the second output conductor 65 can be by After through-hole stretches out, then it is electrically connected with cell cup 20, battery cover 30.

It is understood that the first output conductor 64 is stretched out from battery core 60, and turns down the outer circumferential for being located at battery core 60, packet Include: the first output conductor 64 is stretched out from battery core 60, and is turned down to the outer circumferential of battery core 60；First output conductor 64 is from battery core 60 stretch out, and turn down to the outer circumferential of the first positioning ring 72.Second output conductor 65 is stretched out from battery core 60, and is turned down and be located at The outer circumferential of battery core 60, comprising: the second output conductor 65 is stretched out from battery core 60, and is turned down to the outer circumferential of battery core 60； Second output conductor 65 is stretched out from battery core 60, and is turned down to the outer circumferential of the second positioning ring 70.

In addition to the above implementation exceptions, cell cup 20 and the first circumferential side wall 22, battery cover 30 and the second circumferential side wall 32 Electric connection mode can also pass through welding.It specifically, can be using precision resistance spot welding, ultrasonic bonding or laser welding Mode is realized.Since the depth of battery cover 30 is shallower, the connection type of this welding needs higher positioning accuracy and equipment fixed System, higher cost, efficiency are lower.

In addition to the above implementation exceptions, cell cup 20 and the first circumferential side wall 22, battery cover 30 and the second circumferential side wall 32 Electric connection mode can also pass through conductive adhesive curing.Specifically, the first output conductor 64 is bonded in the by conductive adhesive curing In one circumferential side wall 22, the second output conductor 65 is bonded in the second circumferential side wall 32 by conductive adhesive curing.For example, by epoxy Electric-conducting nickel paste is coated on the inner sidewall of output conductor and pole shell, and the conductive connection of the two is realized by heat cure.It needs Bright, conducting resinl is the adhesive with certain electric conductivity after a kind of solidification, is usually with matrix resin and conductive filler Conducting particles is main constituents.Conducting particles is combined together by the bonding effect of matrix resin, is formed conductive logical The conductive connection for being glued material is realized on road.Conducting resinl has adhesive force strong, and impedance is low, and soldering resistance is good and anti-aging property is strong etc. Feature.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims

1. a kind of button cell characterized by comprising

Cell cup, inner hollow and open at one end；

Battery cover, inner hollow and open at one end, the open end of the battery cover is located at the inside of the open end of the cell cup, And the open end of the battery cover is at least partly overlapped with the open end of the cell cup, the height of intersection is less than or equal to The height of the battery cover；

Insulated enclosure circle is set between the cell cup and the battery cover, and the cell cup and the battery cover is electrical Isolation；

Battery core, be arranged in the cell cup, the battery cover and the insulated enclosure corral at accommodating cavity in, the battery core Bottom end and the cell cup are electrically connected；And

At least one second output conductor is stretched out from the top of the battery core, and is turned down behind the outer circumferential of the battery core It is electrically connected with the battery cover.

2. button cell according to claim 1, which is characterized in that the height of the battery cover is less than the cell cup Highly.

3. button cell according to claim 1, which is characterized in that the battery cover includes the second bottom wall and is set to described The second circumferential side wall on second bottom wall periphery, second circumferential side wall and second output conductor are electrically connected.

4. button cell according to claim 3, which is characterized in that the insulated enclosure circle includes main part and by main body The interior turn of bilge that portion extends internally, the main part are interposed between the cell cup and the battery cover, and the interior turn of bilge is located at Below the open end of the battery cover and end of the interior turn of bilge is no more than second circumferential side wall.

5. button cell according to claim 3, which is characterized in that further include be sheathed on the top of the battery core Two positioning rings, second output conductor are stretched out from the battery core, and are turned down to the outer circumferential of the battery core, described second Positioning ring is electrically connected with second output conductor, the battery cover respectively.

6. button cell according to claim 3, which is characterized in that further include be sheathed on the top of the battery core Two positioning rings, second output conductor are stretched out from the battery core, and are turned down to the outer circumferential of second positioning ring, with It is connected to second output conductor between second positioning ring and second circumferential side wall.

7. button cell according to claim 1, which is characterized in that it further include at least one first output conductor, it is described First output conductor is stretched out from the battery core, and is turned down and formed electrical property with the cell cup behind the outer circumferential of the battery core Connection.

8. button cell according to claim 7, which is characterized in that the cell cup includes the first bottom wall and is set to described The first circumferential side wall on first bottom wall periphery, first circumferential side wall and first output conductor are electrically connected.

9. button cell according to claim 8, which is characterized in that it further include the first positioning ring, first positioning ring The sleeve-shaped being open in both ends, and be sheathed on the bottom end of the battery core, first output conductor is fixed by described first Position ring and first circumferential side wall are electrically connected.

10. button cell according to claim 9, which is characterized in that first output conductor is stretched out from the battery core, And turn down on the outer circumferential of the battery core, first positioning ring is sheathed in the battery core, and respectively with described first Output conductor, the cell cup are electrically connected.