CN218731358U

CN218731358U - Button cell convenient to equipment

Info

Publication number: CN218731358U
Application number: CN202222902641.9U
Authority: CN
Inventors: 周攀; 陈航
Original assignee: Luhua Zhifu Electronics Dongguan Co ltd
Current assignee: Luhua Zhifu Electronics Dongguan Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a button cell convenient to equipment. The button cell convenient to assemble comprises an upper cover and a shell, wherein the shell is cylindrical and is provided with an opening and an inner cavity; the upper cover includes lid, insulator and hardware, and the lid is located the opening part, and the insulator is connected between lid and hardware. Because the border of shell at the opening part forms annular connecting portion to turning up the book, connecting portion form annular blend stop to the direction of keeping away from the inner chamber turning up the book, when equipment upper cover and shell, connecting portion are spacing to the lid in the axial direction of shell, and the blend stop is spacing to the lid in the radial direction of shell, and the upper cover is difficult for taking place the dislocation, has reduced the equipment degree of difficulty of the two. Because the outer peripheral face of blend stop and lid sets up relatively, so can be with the outer peripheral face and the blend stop welding of lid, and the border butt in connecting portion all around of lid, the connecting portion hinders the border all around of lid and inner chamber and separates, and when the welding, the welding slag is difficult for getting into the inner chamber, and the quality of battery promotes, and production yield promotes, and production efficiency improves.

Description

Button cell convenient to equipment

Technical Field

The utility model relates to the technical field of batteries, especially, relate to a button cell convenient to equipment.

Background

In the prior art, the cover body of the button cell is a flat hardware panel, and the upper cover and the shell are assembled without limiting or positioning parts, so that precise assembly is difficult to achieve, and the assembly process is complicated. If the assembly of the cover body and the shell is not accurate, the cover body and the shell generate relative eccentric displacement and dislocation, or the cover body warps, and the edge of the cover body is not completely contacted with the edge of the shell, so that a blank welding phenomenon occurs during welding, and the quality of the battery is influenced; and lead to welding slag to splash to the shell inside easily when the welding, lead to the finished product size to appear the deviation, the problem of weeping easily appears in the battery, and the production yield is low, and production efficiency is low, and the productivity can't satisfy market and customer's demand.

SUMMERY OF THE UTILITY MODEL

The utility model provides a button cell convenient to equipment can solve the problem that button cell equipment is inconvenient, production efficiency is low.

The technical scheme of the utility model is that: the utility model provides a button cell convenient for assembly, which comprises an upper cover and a shell, wherein the shell is cylindrical and is provided with an opening and an inner cavity;

the upper cover comprises a cover body, an insulator and hardware, the cover body is positioned at the opening, and the insulator is connected between the cover body and the hardware;

the edge of the shell at the opening is outwards turned and folded to form an annular connecting part, and the peripheral edge of the cover body is abutted against the connecting part; the connecting part is turned and folded in the direction far away from the inner cavity to form an annular barrier strip, and the barrier strip is arranged opposite to the outer peripheral surface of the cover body and used for limiting the cover body.

Further, the connecting part and the side wall of the shell are bent by 90 degrees.

Furthermore, the barrier strip and the connecting part are bent to form 90 degrees, and the barrier strip is abutted with the peripheral surface of the cover body; or, the blend stop with connecting portion buckle and are the obtuse angle, the blend stop includes relative link and welded end, the link with connecting portion connect and with the outer peripheral face butt of lid, the welded end with there is the space in the outer peripheral face of lid, the space is used for holding soldering tin.

Further, in the axial direction of the housing, the size of the outer peripheral surface of the cover body is smaller than or equal to the size of the barrier strip.

Further, the vertical distance from the connecting part and the inward turning point of the barrier strip to the inner wall of the shell is 1.5-2 times of the thickness of the side wall of the shell.

Further, the cover body comprises an outer ring piece, a connecting ring and an inner ring piece, and the connecting ring is tubular;

the outer edge of the outer ring sheet is connected with the connecting part, and one end of the connecting ring is connected with the surface, facing the inner cavity, of the outer ring sheet and is connected with the inner edge of the outer ring sheet; the other end of the connecting ring is connected with the outer edge of the inner ring sheet;

the button cell convenient to assemble further comprises a battery cell, the battery cell is in a winding type or a laminated type, and the battery cell is located in the inner cavity;

the insulator is located in the connecting ring, be provided with first through-hole on the insulator, first through-hole with the hollow department intercommunication of inner ring piece, the hardware with the face that the insulator is connected is provided with the arch, the arch is worn to locate first through-hole with the hollow department of inner ring piece and with electric core is connected.

Further, the lid is kept away from the face of inner chamber, the insulator is kept away from the face of inner chamber with the hardware is kept away from the face of inner chamber is located the coplanar.

Further, the cover body is in an annular sheet shape;

the insulator is provided with the second through-hole, the second through-hole communicates with the hollow department of lid, button cell convenient to equipment still includes electric core, electric core is coiling formula or lamination formula, electric core is located the inner chamber, the hardware with the face that the insulator is connected is provided with the arch, the arch is worn to locate the second through-hole with the hollow department of lid and with electric core connects.

Further, the lid orientation the face of inner chamber, the insulator orientation the face of inner chamber with the hardware orientation the face of inner chamber is located the coplanar.

Further, button cell convenient to equipment still includes the relief valve, the relief valve is located on the hardware or the bottom of shell, the relief valve is used for reducing atmospheric pressure in the shell.

The utility model discloses compare in prior art, its beneficial effect is: the button cell convenient to assemble provided by the utility model comprises an upper cover and a shell, wherein the shell is cylindrical and is provided with an opening and an inner cavity; the upper cover includes lid, insulator and hardware, and the lid is located the opening part, and the insulator is connected between lid and hardware. Because the border of shell at the opening part forms annular connecting portion to turning up the book, connecting portion form annular blend stop to the direction of keeping away from the inner chamber turning up the book, when equipment upper cover and shell, connecting portion are spacing to the lid in the axial direction of shell, and the blend stop is spacing to the lid in the radial direction of shell, and the upper cover is difficult for taking place the dislocation, has reduced the equipment degree of difficulty of the two. Because the outer peripheral face of blend stop and lid sets up relatively, so can be with the outer peripheral face and the blend stop welding of lid, and the border butt in connecting portion all around of lid, the connecting portion hinders the border all around of lid and inner chamber and separates, and when the welding, the welding slag is difficult for getting into the inner chamber, and the quality of battery promotes, and production yield promotes, and production efficiency improves.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

Fig. 1 is a sectional view of a button cell convenient to assemble according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the button cell convenient to assemble in fig. 1.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is an enlarged view of a portion B of fig. 2.

Fig. 5 is a schematic view of the button cell in fig. 1, which is easy to assemble.

Fig. 6 is a sectional view of a button cell convenient for assembly according to a second embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.

In the present application, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, fig. and fig. 3, a button cell convenient to assemble according to a first embodiment of the present invention includes an upper cover 1 and a housing 2, the housing 2 is cylindrical and has an opening 21 and an inner cavity 24, the upper cover 1 is located at the opening 21 of the housing 2, and an edge of the upper cover 1 is connected to an edge of the opening 21 of the housing 2.

The upper cover 1 includes a cover body 11, an insulator 12, and a hardware 13, the cover body 11 being located at the opening 21, the insulator 12 being connected between the cover body 11 and the hardware 13. The edge of the shell 2 at the opening 21 is turned outwards to form an annular connecting part 22, and the peripheral edge of the cover body 11 is abutted against the connecting part 22; the connecting portion 22 is folded in a direction away from the inner cavity 24 to form an annular barrier 23, and the barrier 23 is disposed opposite to the outer peripheral surface of the cover 11 and is used for limiting the cover 11.

Because the edge of the shell 2 at the opening 21 is turned outwards to form the annular connecting part 22, and the connecting part 22 is turned outwards to form the annular barrier strip 23 in the direction far away from the inner cavity 24, when the upper cover 1 and the shell 2 are assembled, the connecting part 22 limits the cover body 11 in the axial direction of the shell 2, the barrier strip 23 limits the cover body 11 in the radial direction of the shell 2, the upper cover 1 is not easy to be dislocated, and the assembling difficulty of the upper cover 1 and the shell is reduced. Because the barrier strip 23 is arranged opposite to the outer peripheral surface of the cover body 11, the outer peripheral surface of the cover body 11 can be welded with the barrier strip 23, the peripheral edge of the cover body 11 abuts against the connecting portion 22, the peripheral edge of the cover body 11 is separated from the inner cavity 24 by the connecting portion 22, welding slag is not easy to enter the inner cavity 24 during welding, the quality of a battery is improved, the production yield is improved, and the production efficiency is improved.

The upper cover 1 can be formed by hot pressing three parts, namely a hardware 13, an insulator 12 and a cover body 11.

The hardware 13, insulator 12 and cover 11 may also be machined by the following process: the hardware 13 and the insulator 12 are injection molded into an integral component twice, and then the integral component and the cover body 11 are hot pressed, so that the three components are combined into the component of the upper cover 1. Or, the cover body 11 and the insulator 12 are injection molded into an integral assembly, and then the integral part and the hardware 13 are hot pressed, so that the three parts are combined into the assembly of the upper cover 1.

Hardware 13 material is the five metals, forms through punching press or die-casting.

The connecting portion 22 and the barrier rib 23 are both formed by a deep drawing process.

The insulator 12 may be injection molded from a plastic material, preferably PI, PS, PP or PEEK. Insulator 12 is placed between cover 11 and hardware 13 so that cover 11 does not directly contact hardware 13, creating battery polarity insulation. Insulator 12 also provides a seal between cover 11 and fitting 13 to prevent liquid in cavity 24 from leaking out of the gap between cover 11 and fitting 13.

The connecting portion 22 is bent at 90 ° to the side wall of the housing 2. When equipment upper cover 1 and shell 2, the border all around of lid 11 laminates with connecting portion 22 mutually, and connecting portion 22 is better to the support effect of lid 11, and the border all around of lid 11 is buckled when avoiding the equipment.

In this embodiment, the border all around of lid 11 is circular, and the shape of lid 11 corresponds with opening 21 shape, and lid 11 is better to opening 21's cover effect, does benefit to and makes cavity 24 form confined environment, avoids the liquid in cavity 24 to spill.

In other embodiments, the peripheral edge of the cover body can be set to be square or other polygons, so that the manufacturing is facilitated.

In the present embodiment, the barrier 23 and the connecting portion 22 are bent at 90 °, and the barrier 23 abuts against the outer peripheral surface of the cover 11. The peripheral face of lid 11 and blend stop 23 fully contact, can not use the filler metal this moment, directly weld the two together through the mode of laser welding, and production efficiency is high.

In other embodiments, the barrier strip and the connecting part are bent to form an obtuse angle, so that the bent part and the barrier strip do not need to form a specific angle, and the manufacturing requirement of the barrier strip is lowered. The blend stop includes relative link and welding end, and the link is connected with connecting portion and with the outer peripheral face butt of lid, and there is the space welding end and the outer peripheral face of lid, and the space is used for holding soldering tin. The gap is filled with soldering tin, and the barrier strip and the connecting part are welded together in a laser welding mode.

In the present embodiment, the dimension of the outer peripheral surface of the lid body 11 is equal to the dimension of the barrier rib 23 in the axial direction of the housing 2. The peripheral surface of the cover body 11 is completely welded with the barrier strip 23, so that the connection strength of the cover body and the barrier strip is enhanced. And the outer surface of the barrier strip 23 and the peripheral surface of the cover body 11 are positioned on the same plane, the end surface edge of the battery is smooth, and the use feeling is improved.

In other embodiments, the outer peripheral surface of the cover may have a size smaller than that of the barrier. The part that can surpass the blend stop covers on the lid through the mode of deep-drawing, and the blend stop is the cladding along the periphery of lid with the mode of the whole U type that is of connecting portion, promotes the joint strength of lid and shell.

The vertical distance between the inner turning point of the connecting part 22 and the barrier strip 23 and the inner wall of the shell 2 is L, and L is 1.5-2 times of the thickness of the side wall of the shell 2. If the distance between the two is too close, the side wall of the shell 2 is relatively thick, so that the edge of the shell 2 at the opening 21 is not easy to deeply punch the folded connecting part 22, and the production is inconvenient. If the distance between the two is too long, more material is required to manufacture the connecting portion 22, and accordingly, the area of the cover 11 is increased, which results in higher cost. It is preferable to set the vertical distance between the connection portion 22 and the inward turning point of the barrier rib 23 to the inner wall of the housing 2 to be 1.5 to 2 times the thickness of the side wall of the housing 2.

The cover 11 includes an outer ring plate 111, a coupling ring 112, and an inner ring plate 113, and the coupling ring 112 is tubular. The outer edge of the outer ring sheet 111 is connected with the connecting part 22, and one end of the connecting ring 112 is connected with the surface of the outer ring sheet 111 facing the inner cavity 24 and is connected with the inner edge of the outer ring sheet 111; the other end of the connection ring 112 is connected to the outer edge of the inner ring plate 113. The connecting portion 22 forms a portion of the cover 11 projecting into the cavity 24, and the fitting 13 and insulator 12 are located in the connecting portion 22, with the fitting 13 being located closer to the cavity 24 to facilitate connection with components within the cavity 24.

The button cell convenient to assemble further comprises a battery cell 3, and the battery cell 3 is located in the inner cavity 24. The battery cell 3 may be of a laminated type or a wound type. The battery cell 3 comprises a first tab and a second tab, wherein the first tab is connected with the battery cell 3 and the housing 2 and welded with the battery cell and the housing. The second lug connects and is welded to the fitting 13 and the housing 2.

The insulator 12 is positioned in the connection ring 112, and the insulator 12 is provided with a first through hole 121, and the first through hole 121 is communicated with the hollow part of the inner ring plate 113. The first through opening 121 and the hollow opening of the inner ring 113 together form a continuous channel, through which the fitting 13 can be connected to the electrical core 3. The surface of the hardware 13 connected with the insulator 12 is provided with a protrusion 131, and the protrusion 131 penetrates through the first through hole 121 and the hollow part of the inner ring sheet 113 and is connected with the battery cell 3. The arrangement of the projection 131 enables the cell 3 to be connected to the hardware 13, and the hardware 13 conducts the current generated by the cell 3 to the electric equipment.

In the present embodiment, a groove 122 is provided on the insulator 12, the hardware 13 is located in the groove 122, and the edge of the hardware 13 abuts against the inner wall of the groove 122; the first through hole 121 is located at the bottom of the groove 122. The arrangement of the groove 122 further enables the hardware 13 to be closer to the inner cavity 24, so that the connection with the battery cell 3 is facilitated.

The face of cover 11 remote from cavity 24, the face of insulator 12 remote from cavity 24 and the face of hardware 13 remote from cavity 24 lie in the same plane. The outer end face of the button cell convenient to assemble is a flat plane, the size of the cell in the axial direction can be shortened, and the occupied space when the cell is used is reduced.

Referring to fig. 4 and 5, the button cell convenient to assemble further includes a pressure relief valve 4, and the pressure relief valve 4 is used for reducing the air pressure in the housing 2. When the battery is short-circuited or overcharged or other abnormalities occur, the internal pressure is generated, the air pressure is continuously increased, the pressure release valve 4 is broken, and the internal gas of the battery is released from the pressure release valve 4 after explosion, so that the explosion-proof effect is achieved. In this embodiment, the pressure relief valve 4 is located at the bottom of the housing 2.

In other embodiments, the pressure relief valve may also be provided on the hardware.

In the present embodiment, the pressure release valve 4 is integrally formed with the housing 2, and the pressure release valve 4 is formed in a hemispherical shape or a planar shape from outside to inside, and the periphery of the pressure release valve 4 is grooved.

In other embodiments, the pressure relief valve may also be in the form of a sheet, and the pressure relief valve is attached to the housing by welding. Or the pressure release valve is in a film shape, a valve port is arranged on the shell, the valve port can be in a circular shape, a square shape or an oval shape, and the pressure release valve is fused at the valve port in a hot pressing mode.

Referring to fig. 6, in the button cell convenient to assemble according to the second embodiment of the present invention, the structures of the connecting portion 22, the barrier strip 23, the housing 2, the battery cell 3, and the pressure release valve 4 are the same as those of the first embodiment, and are not described herein again.

In the second embodiment of the present invention, what is different from the first embodiment of the present invention is: the upper cover 6 comprises a cover body 61, an insulator 62 and hardware 63, wherein the cover body 61 is in an annular sheet shape, and the structure is simple and convenient to manufacture. The insulator 62 is provided with a second through hole 623, and the second through hole 623 communicates with the hollow portion of the cover body 61. The second through hole 623 is connected to the hollow portion of the cover 61 to form a passage for connecting the hardware 63 to the components in the inner cavity 24.

The surface of the hardware 63 connected to the insulator 62 is provided with a protrusion 631, and the protrusion 631 penetrates through the second through hole 623 and the hollow part of the cover 61 and is connected to the battery cell 3. The provision of projection 631 allows cell 3 to be connected to hardware 63, and hardware 63 conducts the current generated by cell 3 to the consumer.

In this embodiment, the insulator 62 includes an insulating tube 621 and an insulating ring 622, and the insulating tube 621 is located on a surface where the insulator 62 is connected to the cover 61 and connected to an inner edge of the insulating ring 622. The inside of the insulating tube 621 is the second through hole 623, and the protrusion 631 penetrates through the insulating tube 621. Insulating tube 621 is insulating hardware 63 and lid 61 at the axial direction of cavity 24, and insulating tube 621 can be spacing protruding 631, the assembly of hardware 63 and insulator 62 of being convenient for.

The face of cover 61 facing interior cavity 24, the face of insulator 62 facing interior cavity 24, and the face of hardware 63 facing interior cavity 24 are in the same plane. The upper cover does not occupy the capacity of the inner cavity 24, and the inner cavity 24 can accommodate more battery cells 3.

The utility model provides a button cell convenient to equipment sets up connecting portion 22 and blend stop 23 at the 21 borders of opening of shell 2, and connecting portion 22 and blend stop 23 have formed the tang structure jointly, and during the equipment, connecting portion 22 is spacing to lid 11 at the axial direction of inner chamber 24, and blend stop 23 is spacing to lid 11 at the radial direction of inner chamber 24, has reduced the required precision when assembling for the equipment of upper cover 1 and shell 2 is more convenient.

The utility model provides a button cell convenient to equipment, upper cover include hardware, insulating piece and apron, and the upper cover can be formed by hardware, insulator and the three part hot pressing of lid. Or, the hardware and the insulator are molded into an integral assembly twice, and then the integral part and the cover body are hot-pressed, so that the three parts are combined into the assembly of the upper cover. Or the cover body and the insulator are subjected to secondary injection molding to form an integral assembly, and then the integral part and the hardware are subjected to hot pressing, so that the three parts are combined into the assembly of the upper cover.

The utility model provides a button cell convenient to equipment, electric core 3 are coiling formula or lamination formula.

The utility model provides a button cell convenient to equipment is provided with relief valve 4,

relief valve

4 and 2 integrated into one piece of shell, and relief valve 4 outside-in becomes hemispherical shape, or plane shape, relief valve 4's peripheral fluting. Alternatively, the relief valve 4 may be in the form of a sheet, and the relief valve 4 may be connected to the housing 2 by welding. Or, the pressure release valve 4 is in a film shape, a valve port is arranged on the casing 2, the valve port can be in a circular shape, a square shape or an oval shape, and the pressure release valve 4 is fused at the valve port in a hot pressing mode.

In summary, although the present invention has been described with reference to the preferred embodiments, the above embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. The utility model provides a button cell convenient to equipment which characterized in that: the device comprises an upper cover and a shell, wherein the shell is cylindrical and is provided with an opening and an inner cavity;

2. The button cell battery facilitating assembly according to claim 1, wherein: the connecting part and the side wall of the shell are bent to form a 90-degree angle.

3. Button cell easy to assemble according to claim 1, characterized in that: the barrier strip and the connecting part are bent to form 90 degrees, and the barrier strip is abutted with the outer peripheral surface of the cover body; or, the blend stop with connecting portion buckle and are the obtuse angle, the blend stop includes relative link and welded end, the link with connecting portion connect and with the outer peripheral face butt of lid, the welded end with there is the space in the outer peripheral face of lid, the space is used for holding soldering tin.

4. Button cell easy to assemble according to claim 2, characterized in that: in the axial direction of the housing, the size of the outer peripheral surface of the cover body is smaller than or equal to the size of the barrier strip.

5. The button cell battery facilitating assembly according to claim 1, wherein: the vertical distance between the connecting part and the inward turning point of the barrier strip and the inner wall of the shell is 1.5-2 times of the thickness of the side wall of the shell.

6. Button cell easy to assemble according to any of claims 1 to 5, characterized by: the cover body comprises an outer ring piece, a connecting ring and an inner ring piece, and the connecting ring is tubular;

the outer edge of the outer ring piece is connected with the connecting part, and one end of the connecting ring is connected with the surface of the outer ring piece facing the inner cavity and is connected with the inner edge of the outer ring piece; the other end of the connecting ring is connected with the outer edge of the inner ring sheet;

the button cell convenient to assemble also comprises a battery cell, wherein the battery cell is in a winding type or a laminated type and is positioned in the inner cavity;

7. The button cell battery facilitating assembly according to claim 6, wherein: the lid is kept away from the face of inner chamber, the insulator is kept away from the face of inner chamber with the hardware is kept away from the face of inner chamber is located the coplanar.

8. Button cell easy to assemble according to any of claims 1 to 5, characterized by: the cover body is in an annular sheet shape;

9. The button cell battery facilitating assembly according to claim 8, wherein: the cover body faces the inner cavity, the insulator faces the inner cavity, and the hardware faces the inner cavity, and are located on the same plane.

10. The button cell battery facilitating assembly according to claim 1, wherein: the button cell convenient to assemble still includes the relief valve, the relief valve is located on the hardware or the bottom of shell, the relief valve is used for reducing atmospheric pressure in the shell.