CN213304241U - Strong sealed button cell - Google Patents
Strong sealed button cell Download PDFInfo
- Publication number
- CN213304241U CN213304241U CN202022607400.2U CN202022607400U CN213304241U CN 213304241 U CN213304241 U CN 213304241U CN 202022607400 U CN202022607400 U CN 202022607400U CN 213304241 U CN213304241 U CN 213304241U
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- rubber ring
- cover plate
- plate
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- metal cover
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a strong sealed button cell, it includes metal-back, metal cover plate, insulating rubber ring and electric core. The metal shell is a cylindrical structure with an opening at one end, and a support piece is arranged on the inner side of the metal shell. The metal cover plate is positioned on the support and closes the opening. The insulating rubber ring is arranged between the metal shell and the metal cover plate in an isolated mode, and the battery core is arranged in the metal shell. The insulating rubber ring comprises a main body rubber ring and an annular rubber sheet, the main body rubber ring wraps the inner surface and the side face of the periphery of the metal cover plate, and the annular rubber sheet is adhered to and covers the outer surface of the periphery of the metal cover plate. The utility model discloses a strong sealed button cell's annular film is pasted with metal covering plate, main part rubber ring for sealing connection connects the fastening between annular film, metal covering plate and the main part rubber ring, and the leakproofness is good.
Description
Technical Field
The utility model relates to a battery field, in particular to sealed button cell by force.
Background
The battery is a device capable of converting chemical energy into electric energy, and is widely applied to various products such as toys, photoelectric ornaments, small household appliances and the like. The battery can be classified into a cylindrical battery, a square battery, a special-shaped battery and a button battery. The button cell is a cell with the external dimension like a small button, and generally has a larger diameter and a thinner thickness. Wherein button cell among the prior art has the not good problem of encapsulation leakproofness.
It is therefore desirable to provide a button cell with a strong seal to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a strong sealed button cell, button cell's annular film is pasted with metal covering plate, main part rubber ring for sealing connection connects the fastening between annular film, metal covering plate and the main part rubber ring, and the leakproofness is good, with the not good problem of the button cell encapsulation leakproofness among the solution prior art.
In order to solve the technical problem, the utility model adopts the technical scheme that: a strong seal button cell, comprising:
the metal shell is of a cylindrical structure with an opening at one end, and a support piece is arranged on the inner side of the metal shell;
the metal cover plate is positioned on the support and closes the opening;
the insulating rubber ring is arranged between the metal shell and the metal cover plate in an isolated mode and comprises a main body rubber ring and an annular rubber sheet, the main body rubber ring wraps the inner surface and the side face of the periphery of the metal cover plate, and the annular rubber sheet is adhered to and covers the outer surface of the periphery of the metal cover plate; and
and the battery cell is arranged in the metal shell, and the support piece is used for limiting the battery cell.
The utility model discloses in, the thickness of the insulating rubber ring of metal covering plate week side is greater than the thickness of the insulating rubber ring of metal covering plate internal surface, the thickness of the insulating rubber ring of metal covering plate internal surface is greater than the thickness of the insulating rubber ring of metal covering plate surface.
The utility model discloses in, main part rubber ring protrusion in metal decking's surface, the annular film is close to metal decking's one side be provided with the scarce groove that the main part rubber ring suited.
The utility model discloses in, metal decking includes the main part board and encircles the peripheral board that sinks of main part board, it is less than to sink the board the surface of main part board, the main part rubber ring parcel sink the internal surface and the lateral surface of board, annular film covers sink the surface of board, just the surface of annular film with the surface parallel and level of main part board.
Wherein the main body rubber ring extends to contact with the inner surface of the main body plate, and the main body rubber ring extends to the inner circumferential side of the supporting piece to enhance the strength of the insulating rubber ring
In the utility model discloses, the metal casing is close to the inside bending type in open-ended border becomes the hem, the hem joint is in on the circumference side of insulating rubber ring, the hem with metal decking's surface parallel and level.
The utility model discloses in, be provided with the breach on the sunken board, be provided with the fixture block on the main part rubber ring, the fixture block with the breach is connected.
Furthermore, the breach includes the side direction opening, the side direction opening is located the lateral surface of sinking the board, use the surface of sinking the board carries out the projection as the plane of projection, side direction opening width less than or equal to the biggest width in the breach.
The utility model discloses in, support piece is the tubular structure that both ends link up, support piece is located in the metal-back, support piece is close to open-ended one end is provided with the backup pad, the backup pad is right the insulating rubber ring forms the support, support piece insulating rubber ring and it has the colloid to fill between the interior week side of metal-back.
The utility model discloses in, metal decking's surface is provided with heavy groove, heavy inslot is provided with and link up metal decking's explosion-proof through-hole, heavy inslot is provided with the explosion-proof piece, the explosion-proof piece seals explosion-proof through-hole, the surface of explosion-proof piece is provided with the fracture line.
The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a strong sealed button cell's annular film is pasted with metal covering plate, main part rubber ring for sealing connection connects the fastening between annular film, metal covering plate and the main part rubber ring, and the leakproofness is good.
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 schematic diagram of a cross-sectional structure of a strong-sealing button cell of the present invention.
Fig. 2 is the schematic diagram of the local structure of the main rubber ring and the annular rubber sheet wrapped metal cover plate of the strong-sealing button cell of the present invention.
Fig. 3 is a schematic structural view of the metal cover plate and the explosion-proof sheet of the button cell with strong sealing.
Fig. 4 is one of the schematic diagrams of the metal cover plate alternatives of the button cell with strong sealing.
Fig. 5 is a second schematic diagram of an alternative scheme of the metal cover plate of the button cell with strong sealing.
Fig. 6 is one of the schematic diagrams of the explosion-proof sheet alternatives of the strong-sealing button cell of the present invention.
Fig. 7 is a second schematic diagram of an alternative scheme of the explosion-proof sheet of the button cell with strong sealing.
Fig. 8 is a schematic structural diagram of the annular film of the button cell with strong sealing property of the present invention.
Fig. 9 is a schematic cross-sectional view of a second embodiment of the strong sealed button cell of the present invention.
The names of the reference numerals are as follows:
11: a metal shell; 12: a metal cover plate; 121, a main body plate; 122, sinking plate; 123, bending section; 124, explosion-proof through holes; 125: sinking a groove; 126 a: a notch; 126 b: a notch; 126 c: a notch; 13: an insulating rubber ring; 131: a main rubber ring; 132: an annular film; 1321: notching; 14: an electric core; 141: a negative electrode tab; 142: a positive electrode tab; 15: a support member; 16: a colloid; 17: an explosion-proof sheet; 171 a: a fracture line; 171 b: a fracture line; 171 c: a fracture line; 18: an insulating sheet is arranged; 19: and (6) an insulating sheet is arranged.
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.
In the present invention, the directional terms, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding, but not for limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly, e.g., the connection may be a detachable connection or a connection in a unitary structure; 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.
The button cell in the prior art has the problem of poor encapsulation tightness.
The present invention provides a first embodiment of a strong-sealing button cell that can solve the above technical problems.
Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a strong-sealing button cell of the present invention.
In the drawings, elements having similar structures are denoted by the same reference numerals.
The utility model provides a strong sealed button cell, it includes metal-back 11, metal decking 12, insulating rubber ring 13 and electric core 14. The electrolyte filled in the button cell of the embodiment can be a liquid electrolyte or a solid electrolyte.
The metal shell 11 is a tubular structure with an opening at one end, as shown in fig. 1, the top of the metal shell 11 is an opening, a support member 15 is disposed on the inner side of the metal shell 11, and the support member 15 limits the electric core 14.
The metal cover plate 12 is positioned on the support 15 and closes the opening.
The insulating rubber ring 13 is arranged between the metal shell 11 and the metal cover plate 12 in an isolated mode.
Referring to fig. 2, the insulating rubber ring 13 may also be made into a split structure, the insulating rubber ring 13 includes a main rubber ring 131 and an annular rubber sheet 132, the main rubber ring 131 wraps the inner surface and the side surface of the periphery of the metal cover plate 12, the annular rubber sheet 132 wraps the outer surface of the periphery of the metal cover plate 12, and the annular rubber sheet 132 is formed by curing liquid glue, so that the annular rubber sheet 132, the sinking plate 122 and the main rubber ring 131 can be hermetically connected.
The battery cell 14 is disposed in the metal casing 11, wherein the battery cell 14 may be a winding battery cell, a stacked battery cell, or a lap-wound battery cell in the prior art, and the battery cell 14 may lead positive and negative electrodes through corresponding tabs, and connect the positive and negative electrodes to the metal casing 11 or the metal cover 12, respectively, in this embodiment, the positive electrode tab 142 is connected to the metal casing 11, and the negative electrode tab 141 is connected to the metal cover 12.
In addition, an upper insulation sheet 18 may be disposed between the battery cell 14 and the inner surface of the metal cover plate 12, and a lower insulation sheet 19 may be disposed between the battery cell 14 and the inner bottom surface of the metal shell 11, as the case may be.
Referring to fig. 2, the thickness of the main rubber ring 131 on the peripheral side of the metal cover plate 12 is greater than the thickness of the main rubber ring 131 on the inner surface of the metal cover plate 12, and the main rubber ring 131 on the peripheral side of the metal cover plate 12 has a larger deformation space and a larger deformation capability, so that the metal shell 11 can better extrude and wrap the main rubber ring 131 on the peripheral side of the metal cover plate 12, and the thickness of the main rubber ring 131 on the inner surface of the metal cover plate 12 is greater than the thickness of the annular rubber sheet 132.
It is to be understood that the thickness of the grommet 13 on the peripheral side of the metal cover plate 12 refers to the dimension in the horizontal direction in fig. 2, and the thickness of the grommet 13 on the inner surface of the metal cover plate 12 and the thickness of the grommet 13 on the outer surface of the annular rubber piece 132 refer to the dimension in the vertical direction in fig. 2.
Referring to fig. 2 and 8, in the present embodiment, the main rubber ring 131 protrudes from the outer surface of the metal cover 12, and a notch 1321 adapted to the main rubber ring 131 is formed on one surface of the annular rubber sheet 132 close to the metal cover 12.
Referring to fig. 2, in the present invention, the metal cover plate 12 includes a main body plate 121 and a sinking plate 122 surrounding the periphery of the main body plate 121, the sinking plate 122 is lower than the outer surface of the main body plate 121, the insulating rubber ring 13 wraps the sinking plate 122, the outer surface of the insulating rubber ring 13 is flush with the outer surface of the main body plate 121, so that the insulating rubber ring 13 can better form a tight package on the metal cover plate 12, meanwhile, the insulating rubber ring 13 does not protrude to affect the size of the button cell, on the other hand, the sinking plate 122 is lower than the metal shell 11, so that the metal shell 11 can wrap the metal cover plate 12 more tightly.
Referring to fig. 1 and 2, the rubber insulating ring 13 extends to contact with the inner surface of the main body plate 121, the rubber insulating ring 13 extends to the inner circumferential side of the supporting member 15, and a circle of convex ribs are formed on the rubber insulating ring 13, so as to enhance the strength of the rubber insulating ring 13.
The main body plate 121 and the sinking plate 122 can be connected by a bending section 123, and the insulating rubber ring 13 extends and wraps the bending section 123.
The utility model discloses in, metal casing 11 is close to the inside bending type hem in open-ended border, and the hem joint is on the circumference side of insulating rubber ring 13, and the hem protrusion highly is less than the thickness of hem in 12 surfaces of metal covering plate for button cell is under the condition of maintaining the same thickness, and the inside space of button cell is bigger, and convenient further does greatly the capacity of battery.
Preferably, the folded edge in this embodiment is flush with the outer surface of the metal cover plate 12, so as to be more beneficial to enlarging the inner space of the button cell, and meanwhile, the metal shell 11 can better wrap the insulating rubber ring 13.
Referring to fig. 3, in the present invention, a gap 126a is provided on the sinking plate 122, the sinking plate 122 is wrapped by the insulating rubber ring 13, a clamping block is provided on the insulating rubber ring 13, and the clamping block is connected with the gap 126a, so that the metal cover plate 12 and the insulating rubber ring 13 are connected and fastened, and the sealing performance is good.
In the present embodiment, the notch 126a includes a lateral opening, and the lateral opening is located on the outer side surface of the sinking plate 122.
In the extending direction of the perpendicular line on the surface of the metal cover plate 12, the notch 126a penetrates through the metal cover plate 12, so that the notch 126a is more tightly fitted with the latch.
Preferably, the surface of the lower sinking plate 122 is a projection plane, and the width of the lateral opening is smaller than or equal to the maximum width in the notch 126a, so that the latch is tightly fitted with the notch 126a and is not easy to loosen.
Preferably, as shown in fig. 3, the surface of the lower sinking plate 122 is a projection plane, and the projection of the notch 126a is a trapezoid.
Alternatively, as shown in fig. 4, the projection of the gap 126b may also be a circle shape with the surface of the lower sinking plate 122 being a projection plane, wherein the gap 126b is not a closed complete circle due to the existence of the lateral opening.
Alternatively, as shown in fig. 5, the projection of the gap 126c may also be a polygonal shape, with the surface of the lower plate 122 being a projection plane.
The utility model discloses in, support piece 15 is the tubular structure that both ends link up, and support piece 15 is located metal casing 11, and support piece 15 is close to open-ended one end and is provided with the backup pad, and the backup pad forms the support to insulating rubber ring 13, and it has colloid 16 to fill between the interior all sides of support piece 15, insulating rubber ring 13 and metal casing 11 for connect between support piece 15, insulating rubber ring 13 and the metal casing 11 inseparabler, firm.
Meanwhile, the outer peripheral side surface of the supporting member 15 can be arranged to be attached to the inner peripheral side surface of the metal shell 11, so that the connection between the supporting member 15 and the metal shell 11 is more tight and stable.
Referring to fig. 3, in the present invention, the outer surface of the metal cover plate 12 is provided with a sinking groove 125, an explosion-proof through hole 124 penetrating through the metal cover plate 12 is provided in the sinking groove 125, an explosion-proof sheet 17 is provided in the sinking groove 125, the explosion-proof through hole 124 is sealed by the explosion-proof sheet 17, a fracture line 171a is provided on the surface of the explosion-proof sheet 17, when the battery generates heat, high-pressure gas is generated inside the battery, and the high-pressure gas can fracture the explosion-proof sheet 17 along the fracture line 171a, so that the high-pressure gas can be released through the explosion-proof through hole 124 to prevent the.
The fracture line 171a in this embodiment may be disposed around the explosion-proof through hole 124, and the fracture line 171a is an annular structure.
The explosion-proof through hole 124, the sinking groove 125 and the explosion-proof sheet 17 form an explosion-proof structure, wherein the explosion-proof structure can be disposed on the outer surface of the metal cover plate 12, or disposed on the outer surface of the metal shell 11 away from the metal cover plate 12, and of course, a user can select whether to install the explosion-proof structure according to his own requirements.
Referring to fig. 6 (the location of the explosion-proof through hole is indicated by a dashed circle), the score line 171b may alternatively comprise two intersecting straight score lines, and the intersection of the two score lines is located at the region opposite to the explosion-proof through hole 124.
Referring to fig. 7 (the position of the explosion-proof through hole is indicated by a dashed circle in the figure), optionally, the fracture line 171c is U-shaped, and two ends of the fracture line are respectively a fracture end and a closed end, that is, as shown in fig. 7, the left end of the fracture line 171c is a fracture end, the right end is a closed end, the width of the fracture end is greater than that of the closed end, and after the high-pressure gas breaks the explosion-proof piece 17, the fracture end can make the explosion-proof piece 17 not easily splash.
The strong seal button cell of this embodiment is pasted with metal cover plate, main part rubber ring for sealing connection between annular film, metal cover plate and the main part rubber ring connects the fastening, and the leakproofness is good.
As follows the utility model provides a pair of can solve above technical problem's strong sealed button cell' s
Two embodiments
Referring to fig. 9, the present invention provides a strong-sealing button cell, which includes a metal shell 21, a metal cover plate 22, an insulating rubber ring 23 and a battery cell 24.
The metal shell 21 has a cylindrical structure with an opening at one end, as shown in fig. 9, the top of the metal shell 21 is open, and a support 25 is disposed inside the metal shell 21.
The metal cover plate 22 is positioned on the support 25 and closes the opening.
The insulating rubber ring 23 is arranged between the metal shell 21 and the metal cover plate 22 in an isolated mode, the metal cover plate 22 comprises a main body plate and a sinking plate surrounding the periphery of the main body plate, the sinking plate is lower than the outer surface of the main body plate, the insulating rubber ring 23 can also be made into a split structure (see fig. 2), the insulating rubber ring 23 comprises a main body rubber ring and an annular rubber sheet, the main body rubber ring wraps the inner surface and the side face of the periphery of the metal cover plate 22, the annular rubber sheet wraps the outer surface of the periphery of the metal cover plate 22, and the annular rubber sheet is formed by solidifying liquid glue, so that the annular rubber sheet, the sinking plate and the main body rubber.
The battery cell 24 is disposed within the metal case 21.
The metal shell 21 is bent inward to form a folded edge near the edge of the opening, the folded edge is clamped on the circumferential side face of the insulating rubber ring 23, and the height of the folded edge protruding out of the outer surface of the metal cover plate 22 is smaller than the thickness of the folded edge, so that the space inside the button cell is larger under the condition that the button cell maintains the same thickness, and the capacity of the cell is conveniently increased.
The present embodiment is mainly different from the first embodiment in that the support 25 includes a tube 251, the outer side of the tube 251 is fixedly connected to the metal shell 21, the tube 251 is located at one end of the metal shell 21 close to the opening, a support plate 252 is disposed inside the tube 251, the support plate 252 forms a support for the insulating rubber ring 23, and the tube 251 is wrapped on the outer side of the insulating rubber ring 23, which saves more space and is more beneficial to further increase the battery capacity.
In summary, although the present invention has been described in the above embodiments, the above preferred 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 (10)
1. A strong seal button cell, comprising:
the metal shell is of a cylindrical structure with an opening at one end, and a support piece is arranged on the inner side of the metal shell;
the metal cover plate is positioned on the support and closes the opening;
the insulating rubber ring is arranged between the metal shell and the metal cover plate in an isolated mode and comprises a main body rubber ring and an annular rubber sheet, the main body rubber ring wraps the inner surface and the side face of the periphery of the metal cover plate, and the annular rubber sheet is adhered to and covers the outer surface of the periphery of the metal cover plate; and
and the battery cell is arranged in the metal shell, and the support piece is used for limiting the battery cell.
2. The strong seal button cell according to claim 1, wherein the thickness of the rubber ring on the periphery of the metal cover plate is greater than the thickness of the rubber ring on the inner surface of the metal cover plate, and the thickness of the rubber ring on the inner surface of the metal cover plate is greater than the thickness of the annular rubber sheet.
3. The strong-sealing button cell battery according to claim 1, wherein the main rubber ring protrudes from the outer surface of the metal cover plate, and a notch adapted to the main rubber ring is formed on one surface of the annular rubber sheet close to the metal cover plate.
4. The strong-sealing button cell battery according to claim 1, wherein the metal cover plate comprises a main body plate and a sinking plate surrounding the periphery of the main body plate, the sinking plate is lower than the outer surface of the main body plate, the main body rubber ring wraps the inner surface and the outer surface of the sinking plate, the annular rubber sheet covers the outer surface of the sinking plate, and the outer surface of the annular rubber sheet is flush with the outer surface of the main body plate.
5. The strong-sealing button cell according to claim 4, wherein the body rubber ring is extended to contact with the inner surface of the body plate, and the body rubber ring is extended to the inner circumferential side of the support member to reinforce the strength of the insulating rubber ring.
6. The strong-sealing button cell battery according to claim 1, wherein the edge of the metal case close to the opening is bent inward to form a folded edge, the folded edge is clamped on the circumferential side surface of the insulating rubber ring, and the folded edge is flush with the outer surface of the metal cover plate.
7. The strong-sealing button cell battery according to claim 4, wherein the sinking plate is provided with a notch, and the main rubber ring is provided with a clamping block, and the clamping block is connected with the notch.
8. The strong-sealing button cell battery according to claim 7, wherein the notch comprises a lateral opening, the lateral opening is located on the outer side surface of the sinking plate and projects with the surface of the sinking plate as a projection surface, and the width of the lateral opening is less than or equal to the maximum width in the notch.
9. The button cell battery of claim 1, wherein the supporting member is a cylindrical structure with two ends penetrating through, the supporting member is located in the metal casing, a supporting plate is disposed at one end of the supporting member near the opening, the supporting plate supports the insulating rubber ring, and a colloid is filled between the supporting member, the insulating rubber ring and the inner peripheral side surface of the metal casing.
10. The strong-sealing button cell battery according to claim 1, wherein the outer surface of the metal cover plate is provided with a sinking groove, an explosion-proof through hole penetrating through the metal cover plate is arranged in the sinking groove, an explosion-proof sheet is arranged in the sinking groove, the explosion-proof sheet closes the explosion-proof through hole, and the surface of the explosion-proof sheet is provided with a crack line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607400.2U CN213304241U (en) | 2020-11-11 | 2020-11-11 | Strong sealed button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607400.2U CN213304241U (en) | 2020-11-11 | 2020-11-11 | Strong sealed button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213304241U true CN213304241U (en) | 2021-05-28 |
Family
ID=76016161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022607400.2U Active CN213304241U (en) | 2020-11-11 | 2020-11-11 | Strong sealed button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213304241U (en) |
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2020
- 2020-11-11 CN CN202022607400.2U patent/CN213304241U/en active Active
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