CN212277316U - Button cell with insulating support piece - Google Patents

Abstract

The utility model discloses a button cell of insulating support piece in area, including upper cover, insulating support piece, winding body and inferior valve, wherein the upper cover with the inferior valve is made by conductive material, the inferior valve the upper cover respectively with insulating support piece's periphery releasable sealing joint, insulating support piece's axle center detachable peg graft in the central authorities of winding body, the up end of winding body and lower terminal surface are provided with first utmost point ear and second utmost point ear respectively, the free end of first utmost point ear with the inner wall of upper cover is fixed, the free end of second utmost point ear with the inner wall of inferior valve is fixed. The utility model discloses a button cell of insulating support piece in area simple structure, space utilization are high, promote battery capacity, can design the product in a flexible way and prevent the battery explosion.

Description

Button cell with insulating support piece

Technical Field

The utility model relates to a battery technology field especially relates to a take insulating support piece's button cell.

Background

At present, a button battery is an all-metal-shell sealed battery, has the advantages of high specific energy, more recycling times, long storage time and the like, and is often used in portable electronic equipment such as mobile phones, digital cameras, radios, notebook computers and various small electronic products.

The button battery in the prior art is usually only provided with a winding body inside a metal shell, the winding body comprises a positive plate, a negative plate and a separation film positioned between the positive plate and the negative plate, and the axis of the button battery is unsupported, so that the axis of the button battery is easily bulged or sunken inwards when being squeezed inside or outside in the actual use process, the bulge can cause the metal shell to become thin or even break, the connection part of the upper cover and the lower cover can be opened, the sunken inwards bulge can extrude the winding body arranged inside the button battery to be squeezed, and even the positive plate and the negative plate penetrate through the separation film between the positive plate and the negative plate to contact to cause the internal short circuit of the battery. When a short circuit occurs inside the battery, the coil body generates high heat, which causes partial electrolyte to vaporize, and when the internal pressure is high enough, the metal shell of the button battery can be broken, even the battery temperature is raised to cause the material to burn and explode.

Disclosure of Invention

The utility model relates to a solve not enough among the prior art and accomplish, the utility model aims at providing a simple structure, space utilization height, promote battery capacity, can design the product in a flexible way and prevent the button cell of insulating support piece in area of battery explosion.

The utility model relates to a button cell with an insulating support piece, which comprises an upper cover, an insulating support piece, a winding body and a lower shell, wherein the upper cover and the lower shell are both made of conductive materials, the lower shell is surrounded to form a sealed cavity for accommodating the winding body, the insulating support piece is clamped between the upper cover and the winding body, the top of the lower shell and the periphery of the upper cover are respectively in releasable sealing clamping connection with the outer side and the inner side of the periphery of the insulating support piece, the axis of the insulating support piece is detachably inserted in the center of the winding body, the winding body is soaked with electrolyte, a first pole lug is arranged on the upper end surface of the winding body, a second pole lug is arranged on the lower end surface of the winding body, the free end of the first tab is fixed with the inner wall of the upper cover, and the free end of the second tab is fixed with the inner wall of the lower shell.

The utility model discloses a button cell of insulating support piece in area can also be:

the insulating support piece comprises an insulating disc, the periphery of the insulating disc is respectively connected with the periphery of the upper cover and the top of the lower shell in a releasable sealing manner, and the axis of the insulating disc is detachably inserted in the center of the winding body.

The periphery integrated into one piece of insulating disc or be fixed with the cladding the sealing washer of upper cover neighboring, the outside of sealing washer with the sealed joint of the top releasable formula of inferior valve.

The axis position department integrated into one piece of insulating disc or be fixed with the insulating column, the detachable grafting of insulating column in the center of coiling body, the bottom of insulating column with inferior valve dismountably offsets.

The inferior valve with insulating support piece's joint position department is provided with the draw-in groove of indent, insulating support piece is in the top position department of draw-in groove with inferior valve releasable sealed joint.

The winding body is cylindric, the winding body includes positive plate, negative pole piece and barrier film, positive plate with the negative pole piece is range upon range of the coiling formation cylindric in turn, the barrier film set up in positive plate with between the negative pole piece, first utmost point ear with positive plate is in the up end of winding body is fixed, the second utmost point ear with the negative pole piece is in the lower terminal surface of winding body is fixed.

The upper cover is provided with an embossing for releasing pressure, and the embossing which is concave-concave or convex-convex is integrally fixed on the upper cover.

The stamping is circular ring with the axis of the upper cover as the center of a circle.

And the insulation support piece is provided with a first through hole at a position corresponding to the free end of the first tab, and the free end of the first tab penetrates through the first through hole to be fixed with the upper cover.

The top of inferior valve is detachable fixedly to be provided with the insulating ring.

The utility model relates to a button cell with an insulating support piece, which comprises an upper cover, an insulating support piece, a winding body and a lower shell, wherein the upper cover and the lower shell are both made of conductive materials, the lower shell is surrounded to form a sealed cavity for accommodating the winding body, the insulating support piece is clamped between the upper cover and the winding body, the top of the lower shell and the periphery of the upper cover are respectively in releasable sealing clamping connection with the outer side and the inner side of the periphery of the insulating support piece, the axis of the insulating support piece is detachably inserted in the center of the winding body, the winding body is soaked with electrolyte, a first pole lug is arranged on the upper end surface of the winding body, a second pole lug is arranged on the lower end surface of the winding body, the free end of the first tab is fixed with the inner wall of the upper cover, and the free end of the second tab is fixed with the inner wall of the lower shell. Thus, the first tab and the second tab are respectively connected to the upper end surface and the lower end surface of the winding body, the free end of the second tab is fixed to the inner wall of the lower shell, then the winding body is accommodated in the sealed cavity formed by the surrounding of the lower shell, the amount of the electrolyte required for infiltration is calculated according to the volume of the winding body, the electrolyte is injected from the insertion position of the insulation support member, so that the electrolyte is fully infiltrated into the whole winding body, the insulation support member is shallowly inserted into the winding body from the upper part of the winding body, and the first tab is fixed to the inner wall of the upper cover through the insulation support member, wherein the first tab can be fixed to the inner wall of the upper cover through the insulation support member from the peripheral edge of the insulation support member, namely fixed to the inner wall of the upper cover from the edge of the insulation support member by bypassing the edge of the insulation support member, after the first pole lug is fixed on the inner wall of the upper cover, the periphery of the upper cover is clamped with the periphery of the insulating support piece, so that the periphery of the insulating support piece is coated on the periphery of the upper cover, then the upper cover and the insulating support piece are inserted into the winding body together, the outer side of the periphery of the insulating support piece is clamped with the inner wall of the lower shell in a releasable sealing manner, the whole button cell is assembled, the winding body is directly arranged in the lower shell, the space of the sealing cavity can be utilized to the maximum extent, the capacity of the button cell can be greatly improved, the winding body fully soaks the electrolyte, the electrolyte is not redundant in the sealing cavity, and further cannot generate any corrosion action on the upper cover and the lower shell, and the whole metal shell comprises the upper cover and the lower shell which are directly connected with the first pole lug and the second pole lug, therefore, the upper cover and the lower shell are both directly electrified, and a client can set the anode and the cathode of the electricity taking structure of the equipment at any positions where the upper cover and the lower shell are in contact respectively, so that the equipment can be designed to be more miniaturized. The top of inferior valve with the periphery of upper cover respectively with the sealed joint of the outside and the inboard releasable of insulating support piece periphery can make the upper cover with the inferior valve is insulating, prevents the upper cover with inferior valve direct contact arouses the short circuit, and is also right simultaneously the upper cover with clearance position between the inferior valve carries out sealed fixed effect. The utility model discloses a button cell of insulating support piece in area is, for prior art's advantage: simple structure, space utilization are high, promote battery capacity, can design the product in a flexible way and prevent the battery explosion.

Drawings

Fig. 1 the utility model relates to a button cell structure explosion chart with insulating support piece.

Fig. 2 the utility model relates to a button cell top view of insulating support piece in area.

Fig. 3 the utility model discloses a button cell with insulating support piece figure 2A-A cross-sectional view.

Description of the figures

1 … upper cover 2 … lower casing 3 … insulating ring

4 … first tab 5 … second tab 6 … flanging

7 … positive plate 8 … isolation film 9 … negative plate

10 … lower insulation layer 11 … winding body 12 … sealing ring

13 … card slot 14 … insulating column 15 … insulating disc

16 … insulating support 17 … stamped 18 … first through hole

19 … second through hole 20 … first avoidance pit

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The button cell with the insulating support member according to the present invention will be described in detail with reference to fig. 1 to 3 of the drawings.

The button cell with the insulating support member of the present invention, please refer to the relevant figures in fig. 1 to 3, comprising an upper cover 1, an insulating support member 16, a winding body 11 and a lower shell 2, wherein the upper cover 1 and the lower shell 2 are both made of conductive material, the lower shell 2 encloses to form a sealed cavity for accommodating the winding body 11, the insulating support member 16 is clamped between the upper cover 1 and the winding body 11, the top of the lower shell 2 and the periphery of the upper cover 1 are respectively connected with the outer side and the inner side of the periphery of the insulating support member 16 in a releasable sealing manner, the axis of the insulating support member 16 is detachably inserted in the center of the winding body 11, the winding body 11 is soaked with electrolyte, the upper end surface of the winding body 11 is provided with a first tab 4, the lower end surface of the winding body 11 is provided with a second tab 5, the free end of the first tab 4 is fixed with the inner wall of the upper cover 1, the free end of the second lug 5 is fixed with the inner wall of the lower shell 2. In this way, the first tab 4 and the second tab 5 are respectively connected to the upper end surface and the lower end surface of the winding body 11, the free end of the second tab 5 is fixed to the inner wall of the lower case 2, then the winding body 11 is accommodated in the sealed cavity defined by the lower case 2, the amount of the electrolyte required for infiltration is calculated according to the volume of the winding body 11, the electrolyte is injected from the insertion position of the insulating support member 16 to fully infiltrate the electrolyte into the entire winding body 11, the insulating support member 16 is shallowly inserted into the winding body 11 from above the winding body 11, and the first tab 4 is fixed to the inner wall of the upper cover 1 through the insulating support member 16, or the first tab 4 is fixed to the inner wall of the upper cover 1 through the insulating support member 16 from the outer circumferential edge of the insulating support member 16, namely, the edge of the insulating support piece 16 is fixed at any position around the inner wall of the upper cover 1, after the first tab 4 is fixed with the inner wall of the upper cover 1, the periphery of the upper cover 1 is clamped with the periphery of the insulating support piece 16, so that the periphery of the insulating support piece 16 is coated on the periphery of the upper cover 1, then the upper cover 1 and the insulating support piece 16 are inserted into the winding body 11 together, the outer side of the periphery of the insulating support piece 16 is in releasable sealing clamping with the inner wall of the lower shell 2, the whole button cell is assembled, thus the winding body 11 is directly installed into the lower shell 2, the space of the sealed cavity can be utilized to the maximum extent, the capacity of the button cell can be greatly improved, the winding body 11 fully soaks the electrolyte, and the electrolyte does not have surplus in the sealed cavity, and then will not to the upper cover 1 with inferior valve 2 produces any corrosive action, and whole metal casing include the upper cover 1 with inferior valve 2 all directly with first utmost point ear 4 with second utmost point ear 5 is connected, consequently the upper cover 1 with inferior valve 2 is all directly electrified, the customer can with the positive negative pole setting of the structure of getting electric of equipment with the upper cover 1 with inferior valve 2 contacts optional position respectively, therefore the equipment can be designed more miniaturely. The top of inferior valve 2 with the periphery of upper cover 1 respectively with the outside and the inboard sealed joint that can relieve of insulating support piece 16 periphery can make upper cover 1 with inferior valve 2 is insulating, prevents upper cover 1 with inferior valve 2 direct contact arouses the short circuit, and is also right simultaneously upper cover 1 with clearance position between inferior valve 2 carries out sealed fixed effect. The utility model discloses a button cell of insulating support piece in area is, for prior art's advantage: simple structure, space utilization are high, promote battery capacity, can design the product in a flexible way and prevent the battery explosion.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: the insulating support member 16 comprises an insulating disc 15, the periphery of the insulating disc 15 is respectively connected with the periphery of the upper cover 1 and the top of the lower shell 2 in a releasable sealing manner, and the axis of the insulating disc 15 is detachably inserted in the center of the winding body 11. Like this, the periphery of insulating disc 15 presss from both sides and locates upper cover 1 with between the inferior valve 2, will upper cover 1 with the gap of inferior valve 2 joint position department is filled up, makes upper cover 1 with inferior valve 2 avoids direct contact upper cover 1 with first utmost point ear 4 is fixed inferior valve 2 with in the use after second utmost point ear 5 is fixed, upper cover 1 with inferior valve 2 can be positive electricity or negative electricity respectively, if both direct contact with the inside formation closed circuit of winding body 11 causes the short circuit. Further preferred technical scheme is the periphery integrated into one piece of insulating disc 15 or be fixed with the cladding the sealing washer 12 of upper cover 1 neighbouring edge, the outside of sealing washer 12 with the sealed joint of formula can be relieved at the top of inferior valve 2. Therefore, the sealing ring 12 covers the peripheral edge part of the upper cover 1 and the part of the upper side and the lower side of the peripheral edge part of the upper cover 1, which is possibly contacted with the lower shell 2, so that the possible contact parts of the upper cover 1 and the lower shell 2 are completely isolated, the safety of the button cell is higher, the upper cover 1 and the lower shell 2 are completely prevented from being contacted, and the danger caused by the short circuit of the button cell due to the contact of the shell is avoided. A further preferable technical scheme is that the sealing ring 12 is made of elastomer materials such as silica gel and TPU. Therefore, elastomer materials such as silica gel and TPU are not reacted with any substance, are insoluble in water and any solvent, are nontoxic and tasteless, have stable chemical properties, are wear-resistant, oil-resistant, transparent and have good elasticity, and therefore, the elastomer materials are widely applied to the fields of daily necessities, sports goods, toys, decorative materials and the like, and the sealing ring 12 made of the elastomer materials such as silica gel and TPU is clamped at the clamping position of the upper cover 1 and the lower shell 2 to fill the gap between the upper cover 1 and the lower shell 2, so that the phenomenon that the electrolyte seeps out of the button cell along with the increase of time is avoided, and the relative fixing position of the upper cover 1 and the lower shell 2 is more stable.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: an insulating column 14 is integrally formed or fixed at the axial center of the insulating disc 15, the insulating column 14 is detachably inserted in the center of the winding body 11, and the bottom of the insulating column 14 is detachably abutted against the lower shell 2. Thus, the insulating column 14 extends the axial position of the insulating disc 15, the bottom of the insulating column 14 is against the lower casing 2 in a release manner, and then the insulating column 14 longitudinally supports the upper cover 1 and the lower casing 2 at the axial position of the insulating disc 15, namely, the central position of the button battery, so as to provide a powerful supporting point for the winding body 11 accommodated in the sealing cavity, and the relative position of the central position of the upper cover 1 and the lower casing 2 is not easy to be sunken and extrude the winding body 11 inside.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: inferior valve 2 with insulating support piece 16's joint position department is provided with the draw-in groove 13 of indent, insulating support piece 16 is in draw-in groove 13's top position department with inferior valve 2 sealed joint of releasable formula. Thus, the periphery of the insulating support member 16 tightly covers the periphery of the upper cover 1, and the clamping groove 13 tightly clamps the insulating support member 16 and the upper cover 1 at the clamping position between the clamping groove 13 and the top edge of the lower shell 2, so that the insulating support member 16 and the upper cover 1 are kept at stable fixed positions together, and the displacement or inclination caused by different external stress positions and sizes is avoided. A further preferable technical scheme is that a flanging 6 is arranged at the top edge of the lower shell 2, and the flanging 6 is turned over towards the axis position of the lower shell 2. Thus, after the upper metal 1 and the insulating support piece 16 are inserted into the winding body 11, the edge of the top of the lower shell 2 beyond the upper cover 1 is pressed to form the flanging 6, and the outer convex formed by the flanging 6 and the clamping groove 13 can tightly clamp the peripheries of the upper cover 1 and the insulating support piece 16 on the inner wall of the top of the lower shell 2.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: the winding body 11 is cylindrical, the winding body 11 comprises a positive plate 7, a negative plate 9 and an isolation film 8, the positive plate 7 and the negative plate 9 are alternately stacked and wound to form a cylinder shape, the isolation film 8 is arranged between the positive plate 7 and the negative plate 9, the first tab 4 is fixed to the upper end face of the winding body 11, and the second tab 5 is fixed to the lower end face of the winding body 11, wherein the negative plate 9 is fixed to the upper end face of the winding body 11. Thus, the winding body 11 is cylindrical, so that the space occupied by the winding body 11 is small, and the space is saved. The wound body 11 is formed by winding the positive electrode sheet 7, the separator 8, and the negative electrode sheet 9, and the separator 8 functions to prevent a short circuit caused by contact between the positive electrode sheet 7 and the negative electrode sheet 9. The first tab 4 is connected to the positive plate 7, the second tab 5 is connected to the negative plate 9, and the specific position can be set according to actual conditions. The insulating support member 16 is inserted at the axial center position of the winding body 11, that is, the positive electrode sheet 7, the negative electrode sheet 9 and the separation film 8 are wound in a laminated manner with the insulating support member 16 as the axial center, the insulating support member 16 increases the radial support force of the winding body 11, the positive electrode sheet 7 generally adopts an aluminum sheet, the negative electrode sheet 9 generally adopts nickel or copper, the negative electrode sheet 9 has the function of embedding and releasing lithium ions, the separation film 8 is a porous plastic sheet having electronic insulation property and capable of conducting ions, the first tab 4 and the positive electrode sheet 7 are fixed on the upper end face of the winding body 11, the second tab 5 and the negative electrode sheet 9 are fixed on the lower end face of the winding body 11, so that the free end of the first tab 4 is fixed with the inner wall of the upper cover 1, and the free end of the second tab 5 is fixed with the inner wall of the lower casing 2, in the using process, the upper cover 1 is a positive electrode, and the lower cover 2 is a negative electrode. Of course, the first tab 4 and the negative plate 9 may be fixed on the upper end surface of the winding body 11, the second tab 5 and the positive plate 7 may be fixed on the lower end surface of the winding body 11, the free end of the first tab 4 is fixed on the inner wall of the upper cover 1, the free end of the second tab 5 is fixed on the inner wall of the lower casing 2, the upper casing 1 is a negative electrode in the using process, and the lower casing 2 is a positive electrode. Because the positive plate 7 and the negative plate 9 are formed by laminating and winding around the axis, the positive plate 7 and the negative plate 9 can be randomly led out from the upper end face and the lower end face of the winding body 11, and then the positive and negative electrodes of the button cell can be randomly arranged, so that the positive and negative electrodes which are convenient for a customer to set equipment are achieved, and the button cell is more convenient and simpler to use.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: the lower insulating layer 10 is interposed between the winding body 11 and the lower case 2. Thus, the free end of the second tab 5 is fixed to the inner wall of the lower case 2 through the lower insulating layer 10, the free end of the second tab 5 may be fixed to the inner wall of the lower case 2 through the lower insulating layer 10 from the outer peripheral edge of the lower insulating layer 10, that is, the free end of the second tab 5 may be fixed to the inner wall of the lower case 2 at any position by passing around the edge of the lower insulating layer 10, when the second tab 5 is connected to the lower case 2, the lower case 2 may be a negative electrode or a positive electrode, and if the lower case 2 is a negative electrode, it is possible to further prevent the positive electrode sheet 7 inside the jelly roll 11 from being electrically connected to the lower case 2, and thus causes a short circuit, whereas if the lower case 2 is a positive electrode, the negative electrode tab 9 inside the jelly roll 11 can be further prevented from being electrically connected to the lower case 2 and thus causing a short circuit. A further preferable technical solution is that the lower insulating layer 10 is provided with a second through hole 19 at a position corresponding to a free end of the second tab 5, and the free end of the second tab 5 passes through the second through hole 19 and is fixed with the lower case 2. In this way, the free end of the second tab 5 firstly passes through the second through hole 19, and the second through hole 19 further defines the position of the second tab 5, so as to prevent the free end of the second tab 5 from being displaced or repeatedly bent to break in the using process. A further preferable technical solution is that a second avoiding pit is arranged on the lower surface of the lower insulating layer 10, and the free end of the second pole lug 5 passes through the second through hole 19 and is tightly attached to the second avoiding pit. In this way, the second avoiding pit further defines the free end of the second tab 5, so that the part of the free end of the second tab 5 after passing through the second through hole 19 is completely fixed in the second avoiding pit, so that the whole part of the second tab 5 is not displaced or repeatedly bent during use, and the second tab 5 is ensured to be respectively and effectively electrically connected with the winding body 11 and the lower shell 2 during use.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: the upper cover 1 is provided with a stamp 17 for releasing pressure, and the stamp 17 which is concave or convex is integrally fixed on the upper cover 1. In this way, the thickness of the stamp 17 and the thickness of the upper cover 1 are kept uniform using a stamping process, the longitudinal section of the stamp 17 is offset from the longitudinal section of the cover 1 at the junction thereof, namely, the thickness of the joint of the stamp 17 and the upper cover 1 is reduced, the unit area load which can be borne is reduced, when the button cell is in failure to cause the internal short circuit or the external short circuit of the cell, while the electronic components do not cut off the circuit such as the separator 8 does not automatically close the pores when the internal temperature of the battery is excessively high, thereby causing a part of the electrolyte to vaporize, supporting the upper case 1 and the lower case 2 and protruding outward, when the internal air pressure reaches the maximum pressure that can be withstood at the junction of the stamp 17 and the upper lid 1, the joint of the stamp 17 and the upper cover 1 must be automatically disconnected to release the pressure, preferably, to prevent the explosion of the battery. In a further preferred embodiment, the stamp 17 is circular with the axis of the upper cover 1 as the center. Therefore, when the upper cover 1 is supported and protruded due to the short circuit in the button cell, and the internal gas pressure reaches the maximum pressure which can be borne by the joint of the stamp 17 and the upper cover 1, the broken part of the stamp 17 is also in a circular ring shape with the axis of the upper cover 1 as the center of the circle, so that the stress of the broken upper cover 1 on the inner side of the stamp 17 is balanced, and the external equipment using the button cell is prevented from being influenced due to the irregular broken end face caused by uneven stress when the upper cover 1 is broken.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: the insulating support piece 16 is provided with a first through hole 18 at a position corresponding to the free end of the first tab 4, and the free end of the first tab 4 passes through the first through hole 18 and is fixed with the upper cover 1. In this way, the free end of the first tab 4 firstly passes through the first through hole 18, and the first through hole 18 further defines the position of the first tab 4, so as to prevent the free end of the first tab 4 from being displaced or repeatedly bent to break in the use process. A further preferred technical scheme is that a first avoiding pit 20 is formed in the upper surface of the insulating support member 16, and the free end of the first tab 4 penetrates through the first through hole 18 and is tightly attached to the first avoiding pit 20. In this way, the first avoidance pit 20 further defines the free end of the first tab 4, so that the part of the free end of the first tab 4 after passing through the first through hole 18 is completely fixed in the first avoidance pit 20, so that the whole part of the first tab 4 is not displaced or repeatedly bent during use, and the first tab 4 is ensured to be respectively and effectively electrically connected with the winding body 11 and the upper cover 1 during use.

The utility model discloses a button cell of insulating support piece in area please refer to relevant each picture in fig. 1 to fig. 3, can also be on the basis of preceding technical scheme: the top of inferior valve 2 is detachable fixed with insulating ring 3. In this way, the device using the button cell is prevented from being electrically connected to the upper case 1 and the lower case 2 after being connected to the battery, thereby preventing a short circuit condition from occurring outside the battery.

The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as falling within the scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. according to the design spirit of the present invention are made.

Claims (10)

1. The utility model provides a button cell of insulating support piece in area which characterized in that: including upper cover, insulating support piece, winding body and inferior valve, wherein the upper cover with the inferior valve is made by conducting material, the inferior valve encloses to establish to form and holds the sealed chamber of winding body, insulating support piece press from both sides and locates the upper cover with between the winding body, the top of inferior valve with the periphery of upper cover respectively with the outside and the inboard removable sealed joint of insulating support piece periphery, insulating support piece's axle center detachable peg graft in the central authorities of winding body, the winding body has soaked electrolyte, be provided with first utmost point ear on the up end of winding body, be provided with the second utmost point ear on the lower terminal surface of winding body, the free end of first utmost point ear with the inner wall of upper cover is fixed, the free end of second utmost point ear with the inner wall of inferior valve is fixed.

2. The button cell with the insulating support according to claim 1, wherein: the insulating support piece comprises an insulating disc, the periphery of the insulating disc is respectively connected with the periphery of the upper cover and the top of the lower shell in a releasable sealing manner, and the axis of the insulating disc is detachably inserted in the center of the winding body.

3. Button cell with insulating support according to claim 2, characterized in that: the periphery integrated into one piece of insulating disc or be fixed with the cladding the sealing washer of upper cover neighboring, the outside of sealing washer with the sealed joint of the top releasable formula of inferior valve.

4. Button cell with insulating support according to claim 2, characterized in that: the axis position department integrated into one piece of insulating disc or be fixed with the insulating column, the detachable grafting of insulating column in the center of coiling body, the bottom of insulating column with inferior valve dismountably offsets.

5. The button cell with the insulating support according to claim 1, wherein: the inferior valve with insulating support piece's joint position department is provided with the draw-in groove of indent, insulating support piece is in the top position department of draw-in groove with inferior valve releasable sealed joint.

6. A button cell with an insulating support according to any of claims 1 to 5, characterized in that: the winding body is cylindric, the winding body includes positive plate, negative pole piece and barrier film, positive plate with the negative pole piece is range upon range of the coiling formation cylindric in turn, the barrier film set up in positive plate with between the negative pole piece, first utmost point ear with positive plate is in the up end of winding body is fixed, the second utmost point ear with the negative pole piece is in the lower terminal surface of winding body is fixed.

7. A button cell with an insulating support according to any of claims 1 to 5, characterized in that: the upper cover is provided with an embossing for releasing pressure, and the embossing which is concave-concave or convex-convex is integrally fixed on the upper cover.

8. Button cell with insulating support according to claim 7, characterized in that: the stamping is circular ring with the axis of the upper cover as the center of a circle.

9. A button cell with an insulating support according to any of claims 1 to 5, characterized in that: and the insulation support piece is provided with a first through hole at a position corresponding to the free end of the first tab, and the free end of the first tab penetrates through the first through hole to be fixed with the upper cover.

10. A button cell with an insulating support according to any of claims 1 to 5, characterized in that: the top of inferior valve is detachable fixedly to be provided with the insulating ring.

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