CN208225923U

CN208225923U - A kind of button cell with pedestal

Info

Publication number: CN208225923U
Application number: CN201820940065.8U
Authority: CN
Inventors: 王建; 喻忠元; 夏青; 阮宝红
Original assignee: YICHANG LIJIA TECHNOLOGY Co Ltd
Current assignee: YICHANG LIJIA TECHNOLOGY Co Ltd
Priority date: 2018-06-15
Filing date: 2018-06-15
Publication date: 2018-12-11
Anticipated expiration: 2028-06-15

Abstract

The utility model discloses a kind of button cells with pedestal, it include: negative cover, cathode housing, sealing ring, anode, diaphragm, cathode and electrolyte, sealing ring is tightly connected negative cover and cathode housing, and negative cover and cathode housing is made to form seal chamber, anode, diaphragm, cathode and electrolyte are set in seal chamber；The button cell further includes being set to the intracorporal energy-gathering ring of anode cover；Energy-gathering ring includes external annulus, internal ring wall and the roof for connecting external annulus and internal ring wall, and external annulus, internal ring wall and roof form annular housing, and roof is abutted with sealing ring；Annular housing is equipped with the first through hole of disengaging electrolyte and/or gas；Anode portion is located in the inner ring of energy-gathering ring.The button cell with pedestal has the energy-gathering ring of annular housing by setting, increase the capacity and discharge power of battery, operating temperature range is extended, the overall stability, depot, consistency and preventing liquid leakage performance of battery is improved, extends battery.

Description

A kind of button cell with pedestal

Technical field

The utility model relates to button cell field more particularly to a kind of button cells with pedestal.

Background technique

Button cell is light, small in size because having the characteristics that, has obtained extensively in various miniature electronic products as power supply General application.In general, button cell includes cathode housing, negative cover and is formed by between cathode housing and negative cover close The intracorporal battery core of chamber and electrolyte are sealed, anode, diaphragm and cathode fold after successively stacking or not folded composition battery core.On however, It states the cathode housing of button cell and negative cover is in encapsulation process and above-mentioned button cell would generally go out in use Situations such as relative displacement, leakage occurs between existing anode and cathode housing, not only reduces the overall stability and leakproof of battery Fluidity energy, and shorten battery.

Utility model content

In view of this, the utility model embodiment provides a kind of capacity and discharge power that can increase battery, expand The operating temperature range of battery, improves the overall stability, depot, consistency and preventing liquid leakage performance of battery, and extends battery The button cell with pedestal of service life.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

The utility model embodiment provides a kind of button cell with pedestal, the button cell include: negative cover, Cathode housing, sealing ring, anode, diaphragm, cathode and electrolyte, wherein the sealing ring is tightly connected the negative cover and institute Cathode housing is stated, and the negative cover and the cathode housing is made to form seal chamber, the anode, diaphragm, cathode and electrolyte In the seal chamber；The button cell further includes being set to the intracorporal energy-gathering ring of the anode cover；The energy-gathering ring includes External annulus, internal ring wall and the roof for connecting the external annulus and the internal ring wall, the external annulus, internal ring wall and roof Annular housing is formed, the roof is abutted with the sealing ring；The annular housing is equipped with disengaging electrolyte and/or gas First through hole；The anode portion is located in the inner ring of the energy-gathering ring.

In above scheme, annular protrusion is extended to form to the sealing ring on the roof of the energy-gathering ring.

In above scheme, the opening portion of the negative cover is bent outwardly and upwardly extends to form sealing edge, the sealing ring It is arranged on sealing edge, to seal the gap of cathode housing opening portion and negative cover opening portion；The annular protrusion is arranged close The underface of edge sealing crooked position.

In above scheme, described just extremely the end face of boss structure and/or the anode is equipped with chamfering.

In above scheme, the annular protrusion of stating is inverted V type, inverted U or circular arc type.

In above scheme, the bottom of anode towards the bottom surface of the cathode housing is recessed inwardly, and to form a positioning recessed The bottom of slot, the internal ring wall extends internally and is equipped with a positioning convex platform in the position of the correspondence positioning groove.

In above scheme, the roof and internal ring wall, the equal circular sliding slopes of external annulus of the energy-gathering ring.

In above scheme, the internal ring wall and external annulus of the energy-gathering ring are the annular wall being arranged concentrically, the annular housing For the annular groove towards cathode housing bottom that is open.

In above scheme, the bottom of the internal ring wall of the energy-gathering ring, which extends internally, flange, the flange and the anode Shell fitting.

In above scheme, the bottom of the energy-gathering ring is equipped with fixinig plate and connects the fixinig plate and the energy-gathering ring Internal ring wall at least one connection sheet；The fixinig plate is connect with the cathode housing.

In above scheme, it is embedding that the sealing ring is equipped with the annular being adapted to the annular protrusion towards the bottom of the pedestal Slot.

In above scheme, the central axis of the fixinig plate and cathode housing overlaps；At least two connection sheet is equal It is even to be arranged in using the center of the fixinig plate as on the same circumference in the center of circle, and at least two connection sheet with the anode Shell fitting is fixedly connected.

In above scheme, the outer diameter of the energy-gathering ring is adapted with the internal diameter of cathode housing, the external annulus of the energy-gathering ring Equipped with elastic bumps, the energy-gathering ring is clamped by the elastic bumps and the cathode housing.

In above scheme, the inside edge in the bottom of the internal ring wall of the pedestal is parallel to the internal ring wall direction and is extended with annular Positioning sleeve, the anode portion are located in circular orientation set, and the circular orientation, which is put on, is equipped with the second of disengaging electrolyte Through-hole.

There is in button cell provided by the embodiment of the utility model with pedestal by setting the cumulative of annular housing Ring, and relies on sealing ring to form support phase ratio in the prior art, reduces the occupied space of sealing ring, and pass through annular housing The volume space of electrolyte is increased, so that battery there are enough electrolyte conduction charged ions during discharge, reduces electricity Pole polarization, to improve the discharge power of battery, and annular housing can form fixed support to anode, improve battery Overall stability has also correspondinglyd increase the mechanical strength of battery, battery is worked in higher temperature；Also, pass through External annulus, internal ring wall and the roof of energy-gathering ring carry out multiple support to components such as sealing ring and negative covers, make the sealing of sealing ring Performance is more preferable, and liquid-leakage preventing effect is more preferable；In addition, the gases such as carbon dioxide that battery generates during the work time can be by first Through-hole enters annular housing, reduces cell internal pressure, can effectively prevent leading to battery leakage and deformation because of battery inflatable. Therefore, the button cell provided by the embodiment of the utility model with pedestal has the energy-gathering ring of annular housing by setting, increases The capacity and discharge power for having added battery, have expanded the operating temperature range of battery, improve overall stability, the storage of battery Property, consistency and preventing liquid leakage performance, and extend battery.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the button cell in an embodiment of the present invention with pedestal；

Fig. 2 is the structural schematic diagram of the button cell in another embodiment of the utility model with pedestal；

Fig. 3 is the structural schematic diagram of the button cell in another embodiment of the utility model with pedestal；

Fig. 4 is the structural schematic diagram of button cell in an embodiment of the present invention；

Fig. 5 is the structural schematic diagram at one visual angle of pedestal in an embodiment of the present invention；

Fig. 6 is the structural schematic diagram at another visual angle of pedestal in an embodiment of the present invention；

Fig. 7 is the cross-sectional view of pedestal；

Fig. 8 is the partial enlargement diagram in Fig. 1；

Fig. 9 is the structural schematic diagram of pedestal in another embodiment of the utility model；

Figure 10 is the structural schematic diagram of sealing ring in an embodiment of the present invention；

Figure 11 is the cross-sectional view of negative cover and sealing ring；

Figure 12 is the partial enlargement diagram in Figure 11 at A；

Figure 13 is the structural schematic diagram of the button cell in an embodiment of the present invention with pedestal；

Figure 14 is the schematic perspective view at a positive visual angle in an embodiment of the present invention；

Figure 15 is the schematic perspective view at another visual angle of anode in an embodiment of the present invention；

Figure 16 is the structural schematic diagram of button cell in an embodiment of the present invention；

Figure 17 is the structural schematic diagram of pedestal in another embodiment of the utility model；

Figure 18 is 15K constant-resistance discharge curve synoptic diagram under button cell room temperature in an embodiment of the present invention；

15K constant-resistance discharge curve after Figure 19 is stored 40 days for button cell in an embodiment of the present invention at 60 DEG C shows It is intended to；

15K constant-resistance discharge curve after Figure 20 is stored 40 days for button cell in an embodiment of the present invention at 85 DEG C shows It is intended to；

Figure 21 is button cell 15K constant-resistance discharge curve synoptic diagram at different temperatures in an embodiment of the present invention；

Schematic perspective view after the button cell collision that Figure 22 is existing CR2032；

Schematic perspective view after the button cell collision that Figure 23 is improvement CR2032.

Specific embodiment

In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product Size；To those skilled in the art, the omitting of some known structures and their instructions in the attached drawings are understandable. For the ordinary skill in the art, above-mentioned term can be understood in the concrete meaning of the utility model with concrete condition. The technical solution of the utility model is described further with reference to the accompanying drawings and examples.

Embodiment one

It is the button cell provided by the embodiment of the utility model with pedestal referring to Fig. 1 to Fig. 7, including negative cover 1, Cathode housing 2, sealing ring 3, anode 4, diaphragm 5, cathode 6 and electrolyte, wherein sealing ring 3 is tightly connected negative cover 1 and anode Shell 2, and the negative cover 1 and the cathode housing 2 is made to form seal chamber, anode 4, diaphragm 5, cathode 6 and electrolyte are set to In the seal chamber；The button cell further includes the energy-gathering ring 7 in cathode housing 2；The energy-gathering ring 7 includes external annulus 71, internal ring wall 72 and the roof 73 for connecting external annulus 71 and internal ring wall 72,73 shape of external annulus 71, internal ring wall 72 and roof Cavity is circularized, the roof 73 is abutted with the sealing ring 3；The annular housing is equipped with disengaging electrolyte and/or gas First through hole 74；Positive 4 part is located in the inner ring of the energy-gathering ring 7.Here, positive 4 shape can be Cylinder can be boss structure or described positive 4 with the shape identical perhaps described positive 4 of anode in the prior art End face be equipped with chamfering, the chamfering can be rounded corner, bevelling etc..The end face includes upper surface and lower end surface, anode 4 In close to diaphragm 5 end face be anode 4 upper surface, anode 4 in close to cathode housing 2 end face be anode 4 lower end surface.Make For an optional embodiment, referring again to Fig. 1, described positive 4 be cylinder.As another optional embodiment, ask Referring again to Fig. 2, described positive 4 be two-way boss structure.It is described referring again to Fig. 3 as another optional embodiment The upper surface and lower end surface of anode 4 are equipped with rounded corner.It should be noted that described positive 4 are also possible to only upper surface and set There are chamfering or upper and lower end face without chamfering.The energy-gathering ring 7 can be to be fixedly connected with the cathode housing 2, and described positive 4 can To be fixedly connected with the energy-gathering ring 7.

It is to be appreciated that the structures such as the negative cover 1, cathode housing 2, sealing ring 3, diaphragm 5 and cathode 6 can with it is existing There is the structure of corresponding component in button cell almost the same, is no longer specifically described in the present embodiment.The positive 4 part position In the inner ring of the energy-gathering ring 7, it can be understood as described positive 4 are located in the inner ring of energy-gathering ring 7 and protrude from energy-gathering ring 7. Wherein, the lower end surface of anode 4 towards inside cathode housing 2, upper surface towards diaphragm 5, the lower end surface of cathode 6 towards diaphragm 5, on End face is towards inside negative cover 1.Anode 4 can be made of positive electrodes such as manganese dioxide；Diaphragm 5 can be tunica fibrosa etc., with It separates anode 4 and cathode 6 and electrolyte can be adsorbed；Cathode 6 can be made of negative electrode materials such as lithiums.Negative cover 1 and anode Shell 2 is circular lid structure made of metal material, and sealing ring 3 can be as made by the insulating materials with sealing performance , for example can be annular plastics circle or annular rubber ring etc..The diameter of diaphragm 5 is not only greater than the diameter of the cross section of anode 4, Also greater than the diameter of the cross section of cathode 6, to guarantee completely to separate anode 4 and cathode 6.The roof 73 can be Plane, inclined-plane or curved surface etc., the external annulus 71, internal ring wall 72 and roof 73 can by with a thickness of 0.1~0.3mm steel band or Aluminium strip etc. is integrally formed by punching press, and first through hole 74 can be circular hole or square hole, and inner ring is arranged according to actual needs On wall 72 and/or roof 73.

It should be noted that the external annulus 71 of energy-gathering ring, internal ring wall 72 and roof 73 can be to sealing rings 3 and negative cover 1 Equal components carry out multiple support, and when the components such as sealing ring 3 and negative cover 1 are by ambient pressure, external annulus 71, internal ring wall 72 And 73 three of roof is not easy to be deformed and influences sealing ring 3 to the sealing effect between negative cover 1 and cathode housing 2, That is stablize the sealing performance of sealing ring 3 because energy-gathering ring has external annulus 71, internal ring wall 72 and roof 73, liquid-leakage preventing effect Fruit is good.Also, it, can be true since external annulus 71, internal ring wall 72 and 73 three of roof are not easy to be deformed when being under pressure Relative displacement will not be occurred by protecting between energy-gathering ring 7 and cathode housing 2, i.e., ensure positive 4, energy-gathering ring 7, cathode housing 2 accordingly Between relative displacement will not occur, improve the overall stability of battery and the quality of battery.In addition, the annular housing is available In accommodating electrolyte, by the first through hole 74 on the annular housing, the electrolyte accommodated in the annular housing can be in electricity Supply anode 4 uses in the work of pond, due to increasing the ownership of electrolyte in battery by annular housing, reduces battery and puts Polarization in electric process, to improve the discharge power and discharge capacity of battery.In addition, boss structure or the end of anode 4 If face is equipped with the design of chamfering so that anode 4 expands in use, around corresponding boss protrusion and chamfering is all Enclose and can be used as expansion space, i.e., so that anode 4 has expansion leeway when expanding, effectively prevent expanding because of anode 4 bursting every The defect of film 5 improves the service life of battery.

In conclusion in the button cell provided by the above embodiment with pedestal, because the annular housing of energy-gathering ring 7 is set It sets, and relies on sealing ring to form support phase ratio in the prior art, reduce the occupied space of sealing ring 3, and pass through annular chamber Body increases the volume space of electrolyte, improves the electro-hydraulic ownership of battery, reduces the polarization in battery discharge procedure, from And the discharge power and discharge capacity of battery are improved, and annular housing can form fixed support to anode 4, improve battery Overall stability, correspondinglyd increase the mechanical strength of battery, battery worked in higher temperature；Pass through energy-gathering ring External annulus 71, internal ring wall 72 and roof 73 multiple support is carried out to the components such as sealing ring 3 and negative cover 1, make the close of sealing ring 3 Sealing property is stablized, and liquid-leakage preventing effect is good；The boss structure of anode 4 or end face are equipped with chamfering and make when anode 4 expands, corresponding Boss protrusion around and end face can be used as expansion space, i.e., so that anode 4 has expansion leeway when expanding, effectively It avoids because anode 4 expands the defect of bursting diaphragm, improves the service life of battery；In addition, battery produces during the work time The gases such as raw carbon dioxide can enter annular housing by first through hole 74, so that cell internal pressure is reduced, it can It effectively prevent leading to battery leakage because of battery inflatable.For example, the manganese dioxide in anode, which is catalyzed, to be made in cell operations Carbon dioxide can be generated under, and enters carbon dioxide in annular housing by first through hole 74, can reduce in battery Portion's gas pressure, to prevent battery inflatable.Further, since the overall stability of battery is high and preventing liquid leakage performance is good, also phase The depot of battery should be improved.

In an optional embodiment, referring again to Fig. 1 to Fig. 7, to sealing ring 3 on the roof 73 of the energy-gathering ring 7 Extend to form annular protrusion 75.When negative cover 1 and the lid of cathode housing 2 close, the annular protrusion 75 squeezes sealing ring 3, so that Sealing ring 3 is become squeezing along 75 edge of annular protrusion from longitudinal extruding, is increased sealing ring 3 to the transverse pressure of two sides, is made to seal Circle 3 connect the contact position for more closely preventing electrolyte between sealing ring 3 and negative cover 1 with cathode housing 2, negative cover 1 And the contact position between sealing ring 3 and cathode housing 2 is to outward leakage, to extend battery.Here, the ring The quantity of shape protrusion 75 can be one or more, in the present embodiment by taking the quantity of the annular protrusion 75 is one as an example.It is false If flux leakage path a in electrolyte is known as between sealing ring 3 and negative cover 1 to the path of outward leakage, by electrolyte from sealing ring Be known as outer flux leakage path b to the path of outward leakage between 3 and cathode housing 2, referring to Fig. 8, it illustrates the interior flux leakage path a of battery with Outer flux leakage path b, it can be seen from the figure that annular protrusion 75 is by squeezing sealing ring when negative cover 1 and the lid of cathode housing 2 close 3, outer flux leakage path can be extended and the even closer area of contact between cathode housing 2 and sealing ring 3 can be made, i.e., it is further close Outer flux leakage path is sealed, while the contact between negative cover 1 and sealing ring 3 can also be made even closer, i.e., further seals the road Nei Lou Diameter.

In an optional embodiment, the annular protrusion 75 can be inverted V type, inverted U or circular arc type.Due to using When V-type, inverted U or circular arc type, the annular protrusion 75 imitates the extruding of sealing ring 3 when negative cover 1 and the lid of cathode housing 2 are closed Fruit is more preferable, so that the contact between sealing ring 3 and negative cover 1 and cathode housing 2 is even closer, liquid-leakage preventing effect is also more preferable.It can With understanding, the annular protrusion with any shape of sealing ring 3 can be squeezed when negative cover 1 and the lid of cathode housing 2 are closed 75 are all possible.

In an optional embodiment, referring to Fig. 1 to Fig. 3 and Fig. 8, the opening portion bent outward of the negative cover 1 Song simultaneously upwardly extends to form sealing edge, and the sealing ring 3 is arranged on sealing edge, to seal 2 opening portion of cathode housing and cathode The gap of 1 opening portion of lid；The underface of sealing edge crooked position is arranged in the annular protrusion 75.

Here, when negative cover 1 and the lid of cathode housing 2 close, the roof 73 of energy-gathering ring 7 can squeeze sealing ring 3, seal at this time 3 pressure that is subject to of circle is other than the pressure from annular protrusion 75, also from the pressure of sealing edge crooked position, thus Increase pressure of the sealing ring 3 respectively between cathode housing 2, negative cover 1.In this way, by increasing 3 pressure of sealing ring Source further enhances and is bonded effect i.e. sealing effect between sealing ring 3 and cathode housing 2, negative cover 1, thus into one Step improves preventing liquid leakage performance.

In an optional embodiment, annular protrusion 75 is arranged on the center line of 3 cross section of sealing ring.

Here, it when annular protrusion 75 is set on the center line of 3 cross section of sealing ring, incites somebody to action so that annular protrusion 75 is to close Longitudinal extruding force of seal 3 is uniform in size, in this way, further improving close between sealing ring 3 and cathode housing 2, negative cover 1 Sealing property.

In an optional embodiment, the roof 73 and internal ring wall 72, the equal circular sliding slopes of external annulus 71 of the energy-gathering ring 7.

Here, connect the roof 73 of the energy-gathering ring 7 and the radius of the circular arc of internal ring wall 72 with connect the energy-gathering ring 7 Roof 73 can be identical with the radius of the circular arc of external annulus 71, and the radius of the circular arc can be 0.2~0.5mm.

In this way, designing by circular sliding slopes, the sealing performance between sealing ring 3 and cathode housing 2, negative cover 1 is improved, And it is easy to for the energy-gathering ring 7 being placed into cathode housing 2.

In an optional embodiment, referring to Fig. 5 to Fig. 7, the internal ring wall 72 and external annulus 71 of the energy-gathering ring 7 For the annular wall being arranged concentrically, the annular housing is annular groove of the opening towards 2 bottom of cathode housing.

Here, the internal ring wall 72 of the energy-gathering ring 7 and external annulus 71 are parallel to each other, and the internal ring wall of the energy-gathering ring 7 72 bottom end is concordant with the bottom end of external annulus 71 and contacts with the bottom of cathode housing 2.The diameter of external annulus 71 should be less than anode The internal diameter of shell 2, so that energy-gathering ring 7 can be placed in cathode housing 2, the diameter of internal ring wall 72 should be straight slightly larger than anode 4 Diameter, so that anode 4 can be placed in energy-gathering ring 7.In addition, the internal diameter of sealing ring 3 should be slightly larger than the diameter of internal ring wall 72.In reality In the application of border, the internal ring wall 72 and external annulus 71 of the energy-gathering ring 7 can vertically arranged and between the two distance be 1.5~ 3.5mm, the i.e. width of annular groove are 1.5~3.5mm.It should be noted that position of the cathode housing 2 far from 1 side of negative cover For 2 bottom of cathode housing；The annular housing is annular groove of the opening towards 2 bottom of cathode housing, it is understood that is The annular housing is bottom of the opening towards cathode housing 2 far from negative cover 1.

Therefore, when the internal ring wall 72 of the energy-gathering ring 7 and external annulus 71 are the annular wall being arranged concentrically, the annular of formation Cavity is also the annular of standard, distribution of the electrolyte around anode 4 will be made more uniform, and anode 4 is made to impregnate effect More preferably.The annular housing is annular groove of the opening towards 2 bottom of cathode housing, ensure that annular housing self stability Meanwhile, it is capable to reduce annular housing self structure occupied space in the battery, the appearance of annular housing is further increased Receive space, i.e., the described annular housing can accommodate more electrolyte and/or gas.

In an optional embodiment, referring to Fig. 1 to Fig. 6, the bottom of the internal ring wall 72 of the energy-gathering ring 7 is inside It is extended with flange 75, the flange 75 is bonded with cathode housing 2.

Here, the flange 75 acts not only as the supporting surface (alternatively referred to as mounting surface) of anode 4, can also increase poly- Contact area between energy ring 7 and cathode housing 2, the joint face being also also used as between cathode housing 2, such as using sharp Flange 75 is connect by photocoagulation mode with cathode housing 2.The flange 75 is also possible to be bonded with cathode housing 2 to be fixedly connected. As a specific embodiment, the flange 75 can be planar annular, and width can be 1.0~2.0mm, and internal diameter and outer diameter can It is configured according to the actual situation.It is understood that flange 75 is that other shapes are also possible, such as in 72 bottom of internal ring wall The flange of the flange or multi-angle that extend to form to symmetry, flange can also be rectangular or round etc..In this way, by energy-gathering ring Upper setting flange, can increase the contact area between energy-gathering ring and cathode housing, to promote electric conductivity, improve battery Quality.

In an optional embodiment, referring to Fig. 5, Fig. 6, Fig. 8 or Fig. 9, the outer diameter and cathode housing 2 of the energy-gathering ring 7 Internal diameter be adapted, the external annulus 71 of the energy-gathering ring 7 is equipped with elastic bumps 77, the energy-gathering ring 7 by elastic bumps 77 with Cathode housing 2 is clamped.

In this way, energy-gathering ring 7 is blocked by elastic bumps 77 with cathode housing 2 when energy-gathering ring 7 and cathode housing 2 are installed It connects, not only substantially increases stability of the energy-gathering ring 7 in cathode housing 2, that is, correspondinglyd increase the stability of battery, together When can solve the big defect of installation difficulty in the prior art.

In an optional embodiment, referring to Fig. 8, the bottom of the energy-gathering ring 7 is equipped with fixinig plate 78 and is connected and fixed At least one connection sheet 79 of the internal ring wall 72 of piece 78 and the energy-gathering ring 7；The fixinig plate 78 is connect with cathode housing 2.

Here, when the energy-gathering ring 7 does not have flange 76, at least one described connection sheet 79 can be directly connected to described The bottom of the internal ring wall 72 of energy-gathering ring 7, so that fixinig plate 78 is fixed on energy-gathering ring 7；When the energy-gathering ring 7 has flange 76 When, at least one described connection sheet 79 can be directly connected to the flange 76, so that fixinig plate 78 is fixed on energy-gathering ring 7. The fixinig plate 78 can be round or rectangular etc., with the fixinig plate be the straight of the round and described fixinig plate 78 in the present embodiment Diameter is less than the internal diameter of flange 76.The fixinig plate 78 is connect with cathode housing 2, be can be the fixinig plate 78 and is welded on anode cover On body 2.In the present embodiment, with the outer diameter of energy-gathering ring 7 be 24mm, internal diameter 20mm, highly for 2.3mm, the diameter of fixinig plate 78 For 9mm, the height of flange 76 is for 1mm.In the present embodiment, fixinig plate 78 and connection are equipped with the bottom of the pedestal 7 For three connection sheets 79 of the internal ring wall 72 of fixinig plate 78 and the pedestal 7.

In this way, not only being promoted by the way that fixinig plate 78 and at least one connection sheet 79 is arranged in the bottom of the energy-gathering ring 7 The fixation of anode 4 and conductive effect, and can guarantee anode 4 and cathode housing 2 when cathode housing 2 is heated or stress deformation Between contact area so that battery have good electrical property.

In an optional embodiment, when the connection sheet 79 at least there are two when, the fixinig plate 78 and cathode housing 2 Central axis overlap；At least two connection sheet 79 is uniformly arranged on using the center of the fixinig plate 78 as the same of the center of circle On one circumference, and at least two connection sheet 79 is bonded with the cathode housing 2 and is fixedly connected.In this way, the fixinig plate 78 overlap with the central axis of cathode housing 2 may insure positive 4, at least two connection sheets concentric with cathode housing 2 79 are uniformly arranged on using the center of the fixinig plate 78 as that can ensure fixinig plate 78 in all directions on the same circumference in the center of circle Stress it is uniform in size, can be further ensured that between anode 4 and cathode housing 2 when cathode housing 2 is heated or stress deformation Contact area, so that battery has good electrical property.

In an optional embodiment, the internal ring wall 72 and/or roof of the energy-gathering ring 7 is arranged in the first through hole 74 On 73.

Here, the first through hole 74 can be the shapes such as circular hole or square hole, and the quantity of the first through hole 74 can root It is configured according to actual needs, is set as 12,24 etc. than first through hole 74 as will be described.In this way, by energy-gathering ring 7 First through hole 74 is set on ring wall 72 and/or roof 73, is facilitated so as to be stored in the intracorporal electrolyte of annular chamber by cathode Lid 1 and cathode housing 2 are formed by seal chamber, so that it is guaranteed that battery normal table works；In addition, battery is also facilitated to work The gases such as generated carbon dioxide enter annular housing in the process, to reduce cell internal pressure.

In an optional embodiment, the internal ring wall 72 is equipped with lower first through hole close to one end of flange 76, separate to turn over The one end on side 76 is equipped with upper first through hole.

Here, the lower first through hole and upper first through hole can be uniformly arranged on around the center of circle of annular housing interior respectively On ring wall 72, the quantity of the lower first through hole and upper first through hole can be respectively 4~12, can also be greater than 12, and The lower first through hole and upper first through hole can be circular hole or square hole, when the lower first through hole and upper first through hole are circular hole When, the diameter of the circular hole can be 0.5~1.5mm.In practical applications, the lower first through hole and upper first through hole can be with It is staggered on internal ring wall 72.

In this way, by the way that multiple first through hole are arranged in the position of 72 different height of internal ring wall, so that battery is in not Tongfang Xiang Shi, the intracorporal electrolyte of annular chamber can flow into supply anode in seal chamber and use, to ensure normal battery operation, reduce Electrode polarization, improves discharge power, discharge capacity, and improve the service life of battery.

In an optional embodiment, the sealing ring 3 injection molding on sealing edge, the height of the sealing ring 3 is 1~ 4mm。

Here, the injection molding of sealing ring 3 is integrally formed on sealing edge, being considered as sealing ring 3 with negative electrode casing 1. It is designed by being integrally formed, can be improved the sealing effect between sealing ring 3 and negative electrode casing 1, is i.e. raising battery preventing liquid leakage performance.

In an optional embodiment, referring again to Fig. 2, described positive 4 be two-way boss structure, wherein a boss with Diaphragm 5 is in contact, bottom of another boss towards cathode housing 2 far from the negative cover 1.

Here, the protrusion height and flange of the boss of the bottom in anode 4 towards cathode housing 2 far from the negative cover 1 76 height matches.In this way, by the design of two-way boss structure, so that anode 4 has expansion to accommodate with lower section above Space extends battery.

In an optional embodiment, the section of the protrusion height of the boss and boss whole height ratio be (0.06~ 0.5): 1, the diameter of the protrusion of the boss and the section of the ratio between boss maximum gauge are (0.65~0.85): 1.

In this way, also ensuring that battery has larger capacity while guaranteeing so that anode 4 has expansion space.

In an optional embodiment, referring to Figure 10 to Figure 12, the bottom of the sealing ring 3 towards the pedestal 7 is equipped with The annular caulking groove 30 being adapted to the annular protrusion 75.

It is to be appreciated that being adapted to if the bottom of the sealing ring 3 towards the pedestal 7 is not provided with the annular protrusion 75 Annular caulking groove 30, and the sealing ring 3 towards the bottom of the pedestal 7 be it is horizontal, then in negative cover 1 and cathode housing 2 When lid closes, the annular protrusion 75 may be connected on the center line of 3 cross section of sealing ring or sealing ring 3 is towards the pedestal The middle position of 7 bottom seals so that the annular protrusion 75 is uneven to the transverse shear stress power size of sealing ring 3 The problems such as circle 3 is uneven there are Impact direction, may cause the sealing effect and sealing ring 3 between sealing ring 3 and cathode housing 2 Sealing effect between negative cover 1 is not identical, to cause sealing performance unstable；If also, battery is during the work time Expand, then the edge portions of the anode may be fallen into during lateral expansion the annular protrusion 75 with it is described close In gap between seal 3, so that can not be connected between positive electrode and negative electrode, lead to battery failure.If the sealing ring 3 is towards institute The bottom for stating pedestal 7 is equipped with the annular caulking groove 30 being adapted to the annular protrusion 75, then closes in negative cover 1 and the lid of cathode housing 2 When, the annular protrusion 75 is embedded in the annular caulking groove 30 of the bottom of the sealing ring 3, the annular protrusion 75 with it is described close There is no gaps between seal 3, between the sealing effect between sealing ring 3 and cathode housing 2 and sealing ring 3 and negative cover 1 Sealing effect also can be identical, interior flux leakage path and outer flux leakage path are further sealed, so that sealing performance is more stable.

Here, the height of 75 Opposite top 73 of annular protrusion can be slightly larger than annular caulking groove 30 relative to sealing ring 3 Towards the height of the bottom of the pedestal 7, so that when the annular protrusion 75 is embedded in the annular caulking groove 30, it is ensured that the ring Deform around shape caulking groove 30, thus make contact between cathode housing 2 and sealing ring 3 and negative cover 1 and sealing ring 3 it Between contact it is even closer.

In this way, the annular protrusion 75 is embedded in the bottom of the sealing ring 3 when negative cover 1 and the lid of cathode housing 2 close Annular caulking groove 30 in, so that flux leakage path and outer flux leakage path in further sealing, improve preventing liquid leakage performance.

In an optional embodiment, referring to Figure 13 to Figure 15, described positive 4 towards the bottom surface of the cathode housing 2 Bottom is recessed inwardly to form a positioning groove 40, and the bottom of the internal ring wall 72 of the pedestal 7 extends internally and described fixed in correspondence The position of position groove 40 is equipped with a positioning convex platform 80.

When installation, the positioning convex platform 80 is placed in the positioning groove 40, can prevent anode 4 so radially It moves, improves the stability of anode 4.Wherein, the shape of above-mentioned positioning convex platform 80 and positioning groove 40 can be according to reality It needs to be configured, in the present embodiment, the positioning convex platform 80 and positioning groove 40 can be set to cylindrical structure.

In an optional embodiment, referring to Figure 16 to Figure 17, the bottom of the internal ring wall 72 of the pedestal 7 is inwardly along parallel It is extended with circular orientation set 81 in 72 direction of internal ring wall, positive 4 part is located in circular orientation set 81, described Circular orientation set 81 is equipped with the second through-hole 82 of disengaging electrolyte.

Here, circular orientation set 81 be located at sealing ring 3 adjacent inboards, circular orientation set 81 can be with external annulus 71 and What internal ring wall 72 was arranged concentrically, the height of circular orientation set 81 is greater than the height of the annular housing.Second through-hole 82 can be Circular hole or square hole, and can be uniformly arranged on circular orientation set 81 according to actual needs.

In this way, improving the stabilization of battery by the way that the circular orientation set 81 is arranged to ensure that anode 4 is not susceptible to move Property.

Embodiment two

Based on previous embodiment identical utility model design, present embodiments provides a kind of model and improve CR2032's Button cell, the structure of button cell for improving CR2032 refer to Fig. 2, Fig. 5, Fig. 6 and Fig. 7, comprising: negative cover 1, just Pole housing 2, sealing ring 3, anode 4, diaphragm 5, cathode 6 and electrolyte, wherein sealing ring 3 is tightly connected negative cover 1 and anode cover Body 2, and the negative cover 1 and the cathode housing 2 is made to form seal chamber, anode 4, diaphragm 5, cathode 6 and electrolyte are set to institute It states in seal chamber；The button cell further includes the energy-gathering ring 7 in cathode housing 2；The energy-gathering ring 7 include external annulus 71, Internal ring wall 72 and roof 73 for connecting external annulus 71 and internal ring wall 72, external annulus 71, internal ring wall 72 and the formation of roof 73 The annular groove being open towards 2 bottom of cathode housing extends to form annular protrusion 75, the ring to the sealing ring 3 on roof 73 Shape protrusion 75 is circular arc type, and the roof 73 is abutted with the sealing ring 3；The internal ring wall 72 is equipped with the of disengaging electrolyte One through-hole 74, positive 4 part are located in the inner ring of the energy-gathering ring 7, and described positive 4 be two-way boss structure, described negative The opening portion of polar cap 1 is bent outwardly and upwardly extends to form sealing edge, and the sealing ring 3 injection molding is on sealing edge, the sealing The height of circle 3 is 3mm, and the underface of sealing edge crooked position is arranged in the annular protrusion 75；The roof 73 of the energy-gathering ring 7 With internal ring wall 72, the equal circular sliding slopes of external annulus 71, the radius of the circular arc is 0.35mm；72 He of internal ring wall of the energy-gathering ring 7 External annulus 71 is the annular wall being arranged concentrically；The bottom of the internal ring wall 72 of the energy-gathering ring 7, which extends internally, flange 75, described to turn over Side 75 is bonded with the cathode housing 2 and is fixedly connected, and described positive 4 are fixedly connected and positive 4 parts are located at the flange 75 In the inner ring of the energy-gathering ring 7；The outer diameter of the energy-gathering ring 7 is adapted with the internal diameter of cathode housing 2.

The size of the button cell provided in this embodiment for improving CR2032 and the size of conventional existing CR2032 are basic It is identical.It is verified below by performance parameter of the specific test to the button cell provided in this embodiment for improving CR2032, It is specific as follows:

(1) volume test of gradient constant-current discharge is tested

In order to detect the volumetric properties of battery, to improve CR2032 button cell and existing CR2032 button cell into The quick constant current ladder discharge test of row, quick constant current ladder discharge test condition are in 20 ± 2 DEG C of temperature and relative humidity 35% Under~75%, constant current continuous discharge: load 5mA continuous discharge, until 2.0V, rest 3h；2.5mA continuous discharge is loaded, until 2.0V. In this test, test is compared by the button cells of button cell and 3 improvement CR2032 to 3 existing CR2032.

The results are shown in Table 1 for the contrast test of above-mentioned gradient constant-current discharge capacity test, can be known by comparative test, The button cell provided by the embodiment of the utility model for improving CR2032 improves about 24%, 5mA and 2.5mA in 5mA discharge capacity Discharge capacity improves about 23.4%.The button cell provided by the embodiment of the utility model for improving CR2032 is in 5mA discharge capacity Account for about the 56.6% of rated capacity, and the button cell of existing CR2032 accounts for about the 31.8% of rated capacity in 5mA discharge capacity； The button cell provided by the embodiment of the utility model for improving CR2032 accounts for about rated capacity in 5mA and 2.5mA discharge capacity 83.4%, and the button cell of existing CR2032 accounts for about the 60% of rated capacity in 5mA and 2.5mA discharge capacity.Therefore, and now There is the button cell of CR2032 to compare, the discharge power of the button cell provided by the embodiment of the utility model for improving CR2032 mentions It is high by about 23%~24%.This is because because improve CR2032 button cell in by external annulus 71, internal ring wall 72 and roof 73 The double polarizing keys structure periphery for forming opening towards the annular groove of 2 bottom of cathode housing and anode 4 can be used as the storage of electrolyte Space is deposited, so that battery has enough electrolyte to have the ionic conduction in discharge process for battery, is caused in battery discharge procedure The polarization phenomena of the enhancing of depolarising ability, solid liquid interface reduce, to improve the power-type ability of battery.

Table 1

Table 2

(2) preventing liquid leakage performance is tested

The test condition of preventing liquid leakage performance are as follows: it is to store under 60 DEG C and -0.1Mpa pressure condition that battery, which is placed in temperature, For 24 hours, then battery is placed in high/low temperature alternative cycle case (70 DEG C~-40 DEG C) to store 5 days, the weightlessness of battery before and after testing experiment Than.Survey is compared by the button cells of button cell and 10 improvement CR2032 to 10 existing CR2032 in this test The comparing result of examination, above-mentioned preventing liquid leakage performance test is as shown in table 2, is known by multiple groups comparative test, is turned by vaccum weightlessness After high/low temperature circulation, the equal no leakage of above two battery, but the button provided by the embodiment of the utility model for improving CR2032 are found The weightless button cell than being significantly less than existing CR2032 of formula battery, preventing liquid leakage performance are more preferable.

Table 3

(3) internal resistance variation test

The test condition of internal resistance variation test are as follows: battery is placed in the baking oven that temperature is 125 DEG C and is stored 30 days, is surveyed respectively Try voltage, internal resistance and height change.Wherein, every kind of battery takes 10 to be tested, and the average value of 10 batteries is then taken to carry out Analysis.

The comparing result of above-mentioned internal resistance variation test is as shown in table 3, existing after 125 DEG C high temperature is stored one month The button cell of CR2032 is no longer valid, and the button cell provided by the embodiment of the utility model for improving CR2032 remains to normally It uses, and internal resistance variation is smaller.

(4) 15K constant-resistance discharge is tested

The test condition of 15K constant-resistance discharge are as follows: under conditions of temperature is 20 ± 2 DEG C, relative humidity is 35%-75%, Load 15K Ω continuous discharge.It as shown in figure 18, is the button cell of improvement CR2032 and the button cell room temperature of existing CR2032 Lower 15K constant-resistance discharge curve synoptic diagram, wherein Figure 18 (c) is that 15K constant-resistance discharge is bent under the button cell room temperature for improving CR2032 Line schematic diagram, Figure 18 (d) are 15K constant-resistance discharge curve synoptic diagram under the button cell room temperature of existing CR2032, can from curve graph To find out that the discharge capacity of the button cell of the more existing CR2032 of discharge capacity for the button cell for improving CR2032 is improved, mention High-amplitude is about 12.5%；This is because it is provided by the embodiment of the utility model improve CR2032 button cell be equipped with by The electrolyte storage warehouse that the spaces such as annular groove are constituted, is capable of providing enough electrolyte, ensure that the ion of battery discharge procedure Conducting power, to improve the utilization rate of positive active material.

As shown in figure 19, the button cell for the button cell and existing CR2032 that improve CR2032 is stored 40 days at 60 DEG C 15K constant-resistance discharge curve synoptic diagram afterwards, wherein Figure 19 (e) is to improve the button cell of CR2032 after 60 DEG C are stored 40 days 15K constant-resistance discharge curve synoptic diagram, the 15K after the button cell that Figure 19 (f) is existing CR2032 is stored 40 days at 60 DEG C is permanent Discharge curve schematic diagram is hindered, according to high temperature storage equivalent formulation: t (T)=t (20 DEG C)/2ⁿCalculate, 60 DEG C store 40 days, quite It is stored 2 years in 20 DEG C of room temperature；It can be seen from the plot that the button cell of existing CR2032 is only capable of in 60 DEG C of storages, 40 days capacity Keep 85%.

As shown in figure 20, the button cell for the button cell and existing CR2032 that improve CR2032 is stored 40 days at 85 DEG C 15K constant-resistance discharge curve synoptic diagram afterwards, wherein Figure 20 (g) is to improve the button cell of CR2032 after 85 DEG C are stored 40 days 15K constant-resistance discharge curve synoptic diagram, the 15K after the button cell that Figure 20 (j) is existing CR2032 is stored 40 days at 85 DEG C is permanent Discharge curve schematic diagram is hindered, according to high temperature storage equivalent formulation: t (T)=t (20 DEG C)/2ⁿCalculate, 85 DEG C store 40 days, quite It is stored 10 years in 20 DEG C of room temperature；It can be seen from the plot that the button electricity provided by the embodiment of the utility model for improving CR2032 Pond stores 40 days capacity at 85 DEG C and keeps 95% or more, illustrates the button electricity provided by the embodiment of the utility model for improving CR2032 Pond shelf characteric is good, and holding reduces.

As shown in figure 21, for improve CR2032 button cell and existing CR2032 button cell respectively -40 DEG C, - 20 DEG C, 23 DEG C, 85 DEG C, 125 DEG C of 15K constant-resistance discharge curve synoptic diagram, wherein Figure 21 (m) is the button electricity for improving CR2032 15K constant-resistance discharge curve synoptic diagram of the pond at -40 DEG C, the button cell that Figure 21 (n) is improvement CR2032 are permanent in -20 DEG C of 15K Discharge curve schematic diagram is hindered, Figure 21 (x) is 15K constant-resistance discharge curve synoptic diagram of the button cell of improvement CR2032 at 23 DEG C, Figure 21 (y) is 15K constant-resistance discharge curve synoptic diagram of the button cell of improvement CR2032 at 85 DEG C, and Figure 21 (z) is to improve 15K constant-resistance discharge curve synoptic diagram of the button cell of CR2032 at 125 DEG C, due to the use of the button cell of existing CR2032 Temperature range is -20 DEG C~+70 DEG C, can be seen that provided by the embodiment of the utility model change from the curve in above-mentioned schematic diagram Button cell into CR2032 still shows good discharge performance in -40 DEG C and+125 DEG C of whens, illustrate and existing CR2032 Button cell is compared, and the button cell provided by the embodiment of the utility model for improving CR2032 extends the use temperature model of battery It encloses, application range is wider.

(5) impact test

The button cell of existing CR2032 and the button cell for improving CR2032 are separately fixed at impact test horizontal platform On face, the counterweight of 9.1kg is promoted to from impact test level table 610mm and counterweight being made to be located at battery surface with hook, Then counterweight is discharged, counterweight free-electron model is made and is collided with the battery being placed on immediately below counterweight.Such as Figure 22 and Figure 23 institute Show, Figure 22 (aa) is that the button cell of existing CR2032 collides the schematic perspective view at latter visual angle, and Figure 22 (bb) is existing The schematic perspective view at another visual angle, Figure 23 (cc) are the button cell for improving CR2032 after the button cell collision of CR2032 The schematic perspective view at latter visual angle is collided, another visual angle is vertical after the button cell collision that Figure 23 (dd) is improvement CR2032 Body structural schematic diagram, from above-mentioned figure as can be seen that improve CR2032 button cell deformation degree be significantly less than it is existing The deformation degree of the button cell of CR2032 illustrates the mechanical performance for improving the button cell of CR2032 better than existing CR2032's Button cell.

Embodiment three

Based on previous embodiment identical utility model design, present embodiments provides a kind of model and improve CR2450's Button cell, referring to fig. 2, Fig. 6 and Fig. 8, wherein include: negative cover 1, cathode housing 2, sealing ring 3, anode 4, diaphragm 5, negative Pole 6 and electrolyte, wherein sealing ring 3 is tightly connected negative cover 1 and cathode housing 2, and makes the negative cover 1 and the anode Shell 2 forms seal chamber, and anode 4, diaphragm 5, cathode 6 and electrolyte are set in the seal chamber；The button cell further includes setting In the energy-gathering ring 7 in cathode housing 2；The energy-gathering ring 7 is including external annulus 71, internal ring wall 72 and for connecting 71 and of external annulus The roof 73 of internal ring wall 72, external annulus 71, internal ring wall 72 and roof 73 form annular groove of the opening towards 2 bottom of cathode housing, Annular protrusion 75 is extended to form to the sealing ring 3 on roof 73, the annular protrusion 75 is circular arc type, the roof 73 and institute State the abutting of sealing ring 3；Upper first through hole and lower first through hole of the internal ring wall 72 equipped with disengaging electrolyte, described positive 4 Part is located in the inner ring of the energy-gathering ring 7, and described positive 4 be two-way boss structure, the opening portion bent outward of the negative cover 1 Song simultaneously upwardly extends to form sealing edge, and on sealing edge, the height of the sealing ring 3 is 3mm, described for the injection molding of sealing ring 3 The underface of sealing edge crooked position is arranged in annular protrusion 75；The roof 73 and internal ring wall 72, external annulus 71 of the energy-gathering ring 7 Equal circular sliding slopes, the radius of the circular arc are 0.35mm；The internal ring wall 72 and external annulus 71 of the energy-gathering ring 7 are arranged concentrically Annular wall；The bottom of the internal ring wall 72 of the energy-gathering ring 7, which extends internally, flange 75, the flange 75 and the cathode housing 2 Fitting is fixedly connected, and described positive 4 are fixedly connected and positive 4 parts are located in the inner ring of the energy-gathering ring 7 with the flange 75； The outer diameter of the energy-gathering ring 7 is adapted with the internal diameter of cathode housing 2, and the external annulus 71 of the energy-gathering ring 7 is equipped with elastic bumps 77, The energy-gathering ring 7 is clamped by elastic bumps 77 and cathode housing 2；The bottom of the energy-gathering ring 7 is equipped with fixinig plate 78, Yi Jilian At least two connection sheets 79 of the internal ring wall 72 of fixinig plate 78 and the energy-gathering ring 7 are connect, the fixinig plate 78 connects with cathode housing 2 It connects.Wherein, cell diameter 24.5mm is highly 5.0mm.The diameter of internal ring wall is 19.6mm, and the diameter of external annulus is 23.8mm, height between roof and internal ring wall bottom are 2.7mm, and the tilt angle of the inner side edge of roof is 60 degree, roof and It is rounded corner between internal ring wall, external annulus, upper first through hole is set on the inner side edge of roof, and upper first through hole is logical with lower first Hole is staggered and quantity be 4, diameter is 0.8mm, sealing ring with a thickness of 2mm, flange is and holds level with both hands under external annulus Neat planar annular and internal diameter is 17mm.

In addition, annular protrusion is circular arc type, roof and internal ring wall, the equal circular sliding slopes of external annulus；The radius of the circular arc is 0.4mm.The protrusion height and boss whole height ratio of boss are 0.15:1, and the diameter and boss of the protrusion of the boss are maximum straight The ratio between diameter is 0.90:1.

The size of the button cell provided in this embodiment for improving CR2450 and the size of existing CR2450 are essentially identical, existing Have CR2450 and improve CR2450 button cell height be 5mm, meet International Electrotechnical Commission (IEC, International Electro technical Commission) as defined in CR2450 button cell Height Standard [4.7mm, 5mm].Below by specific test to the performance parameter of the button cell provided in this embodiment for improving CR2450 into Row verifying, specific as follows:

(1) height change is tested

The button cell of the button cell of 9 existing CR2450 of detection and 9 improvement CR2450 all discharge it in electricity Height afterwards, the height after all discharging before electric discharge with electricity by comparing above-mentioned button cell judge two kinds of different buttons Whether formula battery is deformed and deformation extent size.The height of button cell of existing CR2450 used by testing also is 5mm, height change test result is as shown in table 4, and digital unit is millimeter (mm) in table 4, can be known from table, existing The height of the button cell of CR2450 increases 0.24~0.34mm before ratio does not discharge after having discharged, and illustrates during discharge, The gas generated in the button cell of existing CR2450 increases internal pressure, so as to cause the button cell of existing CR2450 Dilatancy.However, improving height change very little of the button cell of CR2450 before and after electric discharge, illustrate because improving CR2450's In button cell exist by external annulus 71, internal ring wall 72 and roof 73 is formed be open towards 2 bottom of cathode housing annular groove with And the double polarizing keys structure of anode 4, the gas generated during discharge can be stored into the annular groove and pair of anode 4 Around boss structure, inside battery gas pressure is effectively reduced, so that cell expansion deformation extent is small.

Table 4

(2) preventing liquid leakage performance is tested

The test condition of preventing liquid leakage performance are as follows: by buckleing for the button cell of 10 existing CR2450 and 10 improvement CR2450 It is to store for 24 hours under 60 DEG C and -0.1Mpa pressure condition, then battery is placed in high/low temperature alternative cycle case that formula battery, which is placed in temperature, (70 DEG C~-40 DEG C) store 5 days, the voltage of battery, internal resistance and weightless ratio before and after testing experiment.

The comparing result of above-mentioned preventing liquid leakage performance test is as shown in table 5, by analysis it is found that since IEC provides button electricity The weightless ratio in pond should be less than 0.1%, and the button cell of existing CR2450 and the button cell for improving CR2450 all meet above-mentioned want It asks.However, improving the average weightless than being 0.005% of the button cell of CR2450, the button cell than existing CR2450 is put down Weightlessness ratio reduces an order of magnitude, illustrates in the button cell as improvement CR2450 because being equipped with described on roof 73 The annular protrusion 75 that sealing ring 3 extends to form, so that the contact between sealing ring 3 and negative cover 1, cathode housing 2 is even closer, To make more excellent battery hermetization, preventing liquid leakage performance and shelf characteric more preferably.

Table 5

In conclusion compared with prior art, the button cell provided by the embodiment of the utility model with pedestal has Beneficial effect is by ingehious design energy-gathering ring, anode structure, so that the good preventing liquid leakage performance of button cell collection, good steady The simply various advantages of qualitative, high capacity, high service life, manufacture craft are in one.Specifically,

(1) in terms of anti-in the dead of night sealing performance: especially initiative by the design of shape, structure, position to energy-gathering ring Ground is provided with annular protrusion, and the research and development of its shape, position, size are greatly improved with the sealing effect of battery seal ring；And it is logical The effect for developing the annular housing structure of boss type and energy-gathering ring to anode is crossed, effectively prevents causing because of cell expansion The problem of electrolyte is revealed；

(2) in terms of stability: passing through the external annulus of energy-gathering ring, roof, the multiple support of internal ring wall and energy-gathering ring Annular housing to anode support limit, negative cover, sealing ring, cathode, anode, energy-gathering ring, cathode housing can be effectively prevent Between relative displacement occurs, improve the overall stability of battery to guarantee that it using quality, is improved service life；And by poly- Can ring and cathode housing mounting means design, especially energy-gathering ring on the basis of the mode being fixedly connected with cathode housing, The mode that buckle also can be used further positions, and further improves the stability between cathode housing and energy-gathering ring；Furthermore it is logical It crosses and anode is individually impregnated in cathode housing, rather than concentration immersion is carried out to anode using existing, ensure that leaching The quality for steeping electrolyte keeps the parameters such as the moisture content of immersion electrolyte always consistent, and then keeps battery quality more steady It is fixed.

(3) in terms of volumetric properties: compared with the existing technology, the setting of energy-gathering ring can guarantee to improve the same of sealing effect When, the thickness of sealing ring is reduced, volume of the space to increase electrolyte shared by sealing ring is reduced, realizes battery capacity It improves；

(4) in terms of manufacture craft: due to button cell inherently micro devices, to the required precision of production and processing compared with It is high；And cumulative ring structure design provided by the embodiment of the utility model is easy to Project Realization, reduces the requirement of machining accuracy；And The form of buckle can be used and on mounting means, between energy-gathering ring and cathode housing, it is easy to operate, reduce installation difficulty；Its It is secondary, it can allow in the past plus the cathode housing of ring is without adding ring, simplify technique；Meanwhile eliminating the concentration leaching of traditional anode Bubble process, saves the usage amount of electrolyte, to reduce cost；Simultaneously as every battery is all independent quantitative note Enter new electro-hydraulic, the electro-hydraulic amount in every battery, the content of trace water is identical, therefore improves battery with two side terminals.Furthermore Its negative cover, cathode housing can carry out compatible with existing, reduce research and development cost；It, can and for the battery of different-thickness To use identical negative cover, it is only necessary to which the specification for adjusting energy-gathering ring, the production for simplifying negative cover make that it is suitable for not The product of stack pile；

(5) in terms of service life: the button cell provided by the embodiment of the utility model with pedestal is buckled with common Formula battery is compared, and service life can improve 7%~10%.

The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model Range.All any modifications, equivalent replacements, and improvements made within the spirit and scope of the utility model etc. are all contained in this Within the protection scope of utility model.

Claims

1. a kind of button cell with pedestal, including negative cover, cathode housing, sealing ring, anode, diaphragm, cathode and electrolysis Liquid, wherein the sealing ring is tightly connected the negative cover and the cathode housing, and makes the negative cover and the anode cover Body forms seal chamber, and the anode, diaphragm, cathode and electrolyte are set in the seal chamber；It is characterized in that, the button electricity Pond further includes being set to the intracorporal energy-gathering ring of the anode cover；The energy-gathering ring includes external annulus, internal ring wall and for connecting State the roof of external annulus and the internal ring wall, the external annulus, internal ring wall and roof form annular housing, the roof with it is described Sealing ring abuts；The annular housing is equipped with the first through hole of disengaging electrolyte and/or gas；The anode portion is located at institute It states in the inner ring of energy-gathering ring.

2. button cell according to claim 1, which is characterized in that prolong on the roof of the energy-gathering ring to the sealing ring It stretches to form annular protrusion.

3. button cell according to claim 2, which is characterized in that the opening portion of the negative cover is bent outwardly simultaneously upwards Extend to form sealing edge, the sealing ring is arranged on sealing edge, to seal cathode housing opening portion and negative cover opening portion Gap；The underface of sealing edge crooked position is arranged in the annular protrusion.

4. button cell according to claim 1, which is characterized in that the just extremely boss structure and/or the anode End face be equipped with chamfering.

5. button cell according to claim 1, which is characterized in that described positive towards the bottom surface of the cathode housing Bottom is recessed inwardly to form a positioning groove, and the bottom of the internal ring wall extends internally and in the position of the correspondence positioning groove Equipped with a positioning convex platform.

6. button cell according to claim 1, which is characterized in that the bottom of the internal ring wall of the energy-gathering ring extends internally There is flange, the flange is bonded with the cathode housing.

7. button cell according to claim 1, which is characterized in that the bottom of the internal ring wall of the pedestal is inwardly along parallel It is extended with circular orientation set in the internal ring wall direction, the anode portion is located in circular orientation set, and the annular is fixed Position puts on the second through-hole for being equipped with disengaging electrolyte.

8. button cell according to claim 1, which is characterized in that the bottom of the energy-gathering ring be equipped with fixinig plate and Connect at least one connection sheet of the internal ring wall of the fixinig plate and the energy-gathering ring；The fixinig plate and the cathode housing connect It connects.

9. button cell according to claim 2, which is characterized in that the bottom of the sealing ring towards the pedestal is equipped with The annular caulking groove being adapted to the annular protrusion.

10. button cell according to any one of claims 1 to 9, which is characterized in that the outer diameter and anode of the energy-gathering ring The internal diameter of shell is adapted, and the external annulus of the energy-gathering ring is equipped with elastic bumps, the energy-gathering ring by the elastic bumps with The cathode housing clamping.