CN218215500U - Button cell with right-angle edge folding structure - Google Patents
Button cell with right-angle edge folding structure Download PDFInfo
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- CN218215500U CN218215500U CN202222620249.5U CN202222620249U CN218215500U CN 218215500 U CN218215500 U CN 218215500U CN 202222620249 U CN202222620249 U CN 202222620249U CN 218215500 U CN218215500 U CN 218215500U
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- upper cover
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- button cell
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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 button cell with right angle hem structure, this button cell include shell, upper cover, sealing washer, electric core. The shell is of a cylindrical structure, and one end of the shell is provided with an opening. The upper cover is arranged at the opening, the sealing ring is arranged at the opening, and the sealing ring is connected between the upper cover and the shell in a sealing mode. The support frame is annular, and the cross section of support frame is the L type, and the support frame is located the inside of shell. One end of the supporting frame is connected with the inner wall of the shell, and the other end of the supporting frame is connected with the sealing ring. The battery cell is arranged in the support frame, and the shell comprises a right-angle folding structure. The right-angle edge folding structure is formed by bending the edge of the shell close to the opening towards the inner wall of the shell, and the right-angle edge folding structure is connected with the sealing ring. The technical problems of small battery capacity and low energy density of the traditional button battery are effectively solved.
Description
Technical Field
The utility model relates to a battery field, in particular to button cell.
Background
In modern society, a battery is a device that converts chemical energy into electrical energy. The traditional button battery needs to be sealed by adopting a rolling and pressing packaging process, and after the rolling and pressing packaging, the shell of the button battery can form a curled edge structure. The arc-shaped crimping edge is of a hollow structure, so that the crimping edge structure can occupy a larger internal space of the battery, the battery capacity is low, and the requirements of the market and customers are not met. And because the shell is the steel-clad structure and the roll-pressing packaging process influences, the production efficiency is lower.
Therefore, it is desirable to provide a button cell with a right-angled folded edge structure to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a button cell with right angle hem structure has effectively solved and can have improved battery capacity, improves the production efficiency of battery.
The utility model provides a button cell with right angle hem structure, it includes:
the shell is of a cylindrical structure, and one end of the shell is provided with an opening;
the upper cover is arranged at the opening;
the sealing ring is arranged at the opening and is connected between the upper cover and the shell in a sealing manner;
the supporting frame is annular, the cross section of the supporting frame is L-shaped, the supporting frame is positioned in the shell, one end of the supporting frame is connected with the inner wall of the shell, and the other end of the supporting frame is connected with the sealing ring;
the battery cell is arranged inside the support frame;
one end of the first tab is connected with the battery cell, and the other end of the first tab is connected with the shell;
one end of the second tab is connected with the battery cell, and the other end of the second tab is connected with the upper cover;
the shell comprises a right-angle edge folding structure, the right-angle edge folding structure is formed by bending the edge, close to the opening, of the shell towards the inner wall of the shell, and the right-angle edge folding structure is connected with the sealing ring.
In the button cell with the right-angle folded edge structure of the present invention, the sealing ring includes a first sealing portion and a second sealing portion connected to each other, the first sealing portion is connected to the upper cover and between the right-angle folded edge structure, the second sealing portion is located inside the housing and connected to the support frame.
In the button cell with the right-angle folded edge structure of the present invention, the second sealing portion includes a clamping groove, the clamping groove is disposed on the opposite side of the second sealing portion with respect to the first sealing portion, and the other end of the supporting frame is embedded into the clamping groove.
In the button battery with the right-angle folded edge structure, the clamping groove includes a first contact surface and a second contact surface, the first contact surface faces the inside of the shell, the second contact surface is located adjacent to the first contact surface, the second contact surface faces the lateral wall of the shell, the first contact surface, the second contact surface all with the support frame looks butt.
In the button cell having the right-angle folded-edge structure of the present invention, the second sealing portion includes a first portion and a second portion connected to each other, the first portion abutting against the right-angle folded-edge structure and between the support frames, the second portion abutting against the upper cover and between the support frames, the first sealing portion is located at the first portion and at the edge folded at the joint of the second portion.
In the button cell with the right-angle folded edge structure of the present invention, the upper cover is provided with a projection, one end of the projection is connected to the upper cover, and the other end of the projection is located inside the housing.
In the button cell with the right-angle folded edge structure of the present invention, the upper cover has a direction toward the third contact surface inside the housing, the circumferential surface of the bump is the fourth contact surface, and the fourth contact surface is abutted against the second sealing part.
In the button cell having the right-angle folded edge structure of the present invention, the protrusion and the upper cover are integrally formed.
In the button battery with the right-angle edge-folded structure, the upper cover is of a flat-plate-shaped structure, the upper cover comprises an upper cover body and an extending part, the upper cover body is connected with the lug, the extending part is an edge, the circumference of the upper cover body is in an annular shape, the inner side of the extending part is connected with the upper cover body, and the outer side of the extending part is connected with the first sealing part.
In the button cell having the right-angle folded edge structure of the present invention, the upper cover is parallel to the right-angle folded edge structure.
The utility model discloses compare in prior art, its beneficial effect is: the utility model provides a button cell with right angle hem structure, this button cell include shell, upper cover, sealing washer, support frame, electric core. The upper cover and the sealing ring are arranged at the opening of the shell, and the sealing ring is connected between the upper cover and the shell in a sealing manner. One end of the support frame is connected with the inner wall of the shell, the other end of the support frame is connected with the sealing ring, and the battery cell is arranged inside the support frame. The shell comprises a right-angle edge folding structure, the right-angle edge folding structure is formed by bending the edge, close to the opening, of the shell towards the inner wall of the shell, and the right-angle edge folding structure is connected with the sealing ring. The right-angle folded edge structure is formed by bending the edge of the shell close to the opening towards the inner wall of the shell, so that the manufacturing process of the button cell is simple, and the structural reliability of the button cell is high. Moreover, a support frame is arranged in the shell, and the support frame can support the straight-angle folded edge structure. Therefore, the right-angle edge folding structure can be connected with the shell more stably, and the arrangement of the support frame avoids the problem that the right-angle edge folding structure is damaged easily.
Compared with the traditional button cell, the button cell with the right-angle folded edge structure optimizes the structure and the processing technology of the shell. The right-angle edge folding structure and the sealing ring are arranged at the opening at the top of the shell, and the sealing ring is connected between the upper cover and the right-angle edge folding structure in a sealing manner, so that the sealing ring can be used for better sealing and insulating the button cell. Compare in traditional button cell with turn-up structure and sealing washer set up in the inside of shell, this button cell has the inner space advantage, effectively improves button cell's inner space utilization, the capacity of the battery of improvement. When the button battery is assembled, the battery core is firstly installed into the inner cavity of the support frame to form a first assembly, the upper cover and the sealing ring form a second assembly, the first assembly is installed into the inner cavity of the shell, then the second assembly is covered at the opening, and the opening of the shell is folded and pressed through the jig to form a right-angle folding structure for packaging. The right angle hem structure occupies less space than a conventional hem structure. Consequently, this button cell is inside to have great space holding electricity core to the energy density of this battery can obtain increasing.
Drawings
Fig. 1 is a perspective view of an embodiment of a button cell with a two-layer ruffle structure according to the present invention.
Fig. 2 is one of cross-sectional views showing an internal structure of an embodiment of the button cell having a two-layer ruffle structure according to the present invention.
Fig. 3 is a second cross-sectional view of the internal structure of an embodiment of the button cell with two-layer ruffle structure.
Fig. 4 is an enlarged view of fig. 3 at a.
Fig. 5 is a third cross-sectional view of the internal structure of an embodiment of the button cell with two-layer ruffle structure of the present invention.
Fig. 6 is an enlarged view of fig. 5 at B.
In the figure, 10, button cell; 11. a housing; 111. a right-angle folding structure; 12. an upper cover; 121. a bump; 1211. a fourth contact surface; 1212. a third contact surface; 122. an upper cover body; 123. an extending part; 13. a seal ring; 131. a first seal portion; 132. a second seal portion; 1321. a card slot; 13211. a first contact surface; 13212. a second contact surface; 1322. a first portion; 1323. a second portion; 14. a support frame; 15. an electric core; 16. a pressure relief valve; 161. a first groove; 162. a second groove.
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 those skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the present invention, the directional terms mentioned in the following description, such as "upper", "lower", "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 of the present invention, but not for limiting 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 or any order limitation.
In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 1 and fig. 2, the present invention provides a button cell with a right-angle folded edge structure, where the button cell 10 includes a housing 11, an upper cover 12, a sealing ring 13, a supporting frame 14, and a battery cell 15. The housing 11 is a cylindrical structure, and an opening is provided at one end of the housing 11. The upper cover 12 and the sealing ring 13 are both arranged at the opening, and the sealing ring 13 is connected between the upper cover 12 and the shell 11 in a sealing manner. The sealing ring 13 may be formed by injection molding of a plastic material, and the preferable material of the sealing ring 13 is polyimide, polypropylene, or polyetheretherketone. The seal ring 13 is used to seal the case 11 and the upper cover 12, and seal the battery cell 15 and the electrolyte in a space enclosed by the case 11 and the upper cover 12. The sealing rings 13 may insulate the positive and negative electrodes of the case 11 and the upper cover 12.
Referring to fig. 3 and 4, the supporting frame 14 is ring-shaped, and the cross section of the supporting frame 14 is L-shaped. The support frame 14 is the hardware, has a right angled kink after the support frame 14 shaping. The support frame 14 is located inside the housing 11, one end of the support frame 14 is connected with the inner wall of the housing 11, and the other end of the support frame 14 is connected with the sealing ring 13. This support frame 14 can be used to the position of fixed right angle hem structure 111, and when shell 11 was rolled over and is pressed and form right angle hem structure 111, support frame 14 played support, the plastic effect to shell 11, guaranteed that the opening of shell 11 is bent along predetermined position, and support frame 14 can support the operation to right angle hem structure 111 after the shaping of bending simultaneously. Due to the supporting function of the supporting frame 14 on the right-angle folding structure 111, the right-angle folding structure 111 is not easily deformed or damaged.
Referring to fig. 2, the battery cell 15 is disposed inside the supporting frame 14, and the battery cell 15 is a multi-layer winding battery cell 15 structure. The battery cell 15 comprises a positive plate, a negative plate, a diaphragm, a first tab and a second tab, wherein the positive plate and the negative plate are both connected inside the upper cover 12, and the diaphragm is connected between the positive plate and the negative plate. One end of the first tab is connected with the positive plate, and the other end of the first tab is welded with the shell 11. One end of the second pole lug is connected with the negative plate, and the other end of the second pole lug is welded with the upper cover 12.
Referring to fig. 3 and 4, the housing 11 includes a right-angle folded structure 111, the right-angle folded structure 111 is formed by bending an edge of the housing 11 close to the opening toward an inner wall of the housing 11, and the right-angle folded structure 111 is connected to the sealing ring 13. The crimping structure and the sealing ring of the button cell 10 of the traditional crimping structure are both arranged inside the shell, and the sealing ring and the crimping structure of the button cell 10 are also both positioned on the inner side of the side wall of the shell. However, the button cell 10 with the folded edge structure has the folded edge structure and the sealing ring disposed at an open position on the top of the cell, and the sealing ring 13 of the button cell 10 is also disposed at an open position on the top of the cell. The arc-shaped curled edge of the traditional button cell 10 is of a hollow structure, and occupies a certain space inside the cell. The right-angle folded edge has no hollow structure, so that the button cell with the right-angle folded edge structure can save the space inside the cell. The button cell 10 can save the space occupied by the right-angle folded edge structure 111 and the sealing ring 13, and the capacity of the button cell 10 can be improved. This button cell with right angle hem structure compares traditional button cell 10 and has more the inner space advantage, for equal specification button cell 10, this button cell with right angle hem structure can promote the inner space utilization more than 10%.
The user only needs the sealing ring 13 to be sleeved on the upper cover 12 to form an assembly. The user bends the opening of the housing to form a right-angled folded edge structure 111 by abutting the sealing ring 13 on the supporting frame 14, and the assembly can be firmly connected with the housing 11. Therefore, the user can assemble the button cell 10 more easily and conveniently, and the efficiency of assembling the cell by the user is effectively improved. Because the right-angle folded edge structure 111 is formed by bending the edge of the shell 11 close to the opening towards the inner wall of the shell 11, the manufacturing process of the button cell 10 is simple, and the structural reliability of the button cell 10 is strong.
Referring to fig. 3 and 4, the conventional button cell 10 needs to be packaged by a crimping process, the crimping is a hollow structure, and the crimping and the sealing ring 13 are both disposed inside the housing 11. Therefore, the position of the crimping occupies a part of the space of the positive and negative electrode materials of the battery, so that the capacity of the battery is reduced. In addition, the hemming process is difficult to assemble and low in production efficiency. In order to better solve this problem, the button cell with the right-angle folded edge structure can optimize the structure of the cell and improve the part layout of the inner space of the button cell 10. In the button cell 10, the edge of the housing 11 close to the opening is bent toward the inner wall of the housing 11 to form a right-angle folded edge structure 111, and the seal ring 13 is abutted against the opening by the right-angle folded edge structure 111 and the upper cover 12, so as to seal the button cell 10. Moreover, the right-angle folded edge structure 111 can be flush with the opening, so that the right-angle folded edge structure 111 occupies a small space inside the housing 11, and the internal capacity of the button cell 10 is effectively improved. The hollow structure of the crimping structure occupies more space inside the housing 11, so that the button cell 10 with the crimping structure has higher internal space utilization rate and higher battery capacity than the conventional button cell 10.
Referring to fig. 3 and 4, the sealing ring 13 includes a first sealing portion 131 and a second sealing portion 132 connected to each other, and the first sealing portion 131 is connected between the upper cover 12 and the right-angle folding structure 111. The second sealing portion 132 is located inside the housing 11, and one end of the second sealing portion 132 is connected to the right-angle folding structure 111, and the other end of the second sealing portion 132 is connected to the supporting frame 14. The support frame 14 can support the second sealing portion 132, so that the sealing ring 13 can be tightly connected between the support frame 14 and the right-angle folding structure 111. Therefore, the gasket 13 can be stably attached to the inside of the housing 11.
Referring to fig. 3 and 4, the second sealing portion 132 includes a clamping slot 1321, the clamping slot 1321 is disposed on the other side of the second sealing portion 132 opposite to the first sealing portion 131, and the other end of the supporting frame 14 is embedded in the clamping slot 1321. Since the other end of the supporting frame 14 is embedded in the slot 1321, the button cell 10 can effectively utilize the accommodating space of the slot 1321, so that the internal space of the button cell 10 is further increased. Therefore, the button cell 10 can accommodate a larger volume of the battery cell 15, and the button cell 10 has a higher energy density. The card slot 1321 includes a first contact surface 13211 and a second contact surface 13212, the first contact surface 13211 facing the inside of the housing 11. The second contact surface 13212 is located adjacent to the first contact surface 13211, the second contact surface 13212 is in contact with a side wall facing the housing 11, and the first contact surface 13211 and the second contact surface 13212 are in contact with the supporting frame 14. Since the first contact surface 13211 and the second contact surface 13212 are both abutted against the supporting frame 14, the supporting frame 14 is stably connected with the card slot 1321. Further, the holder 14 is difficult to be released from the card slot 1321.
Referring to fig. 3 and 4, the second sealing portion 132 includes a first portion 1322 and a second portion 1323 connected to each other, wherein the first portion 1322 abuts between the right-angle folding structure 111 and the supporting frame 14. Because the first portion 1322 abuts between the right-angle folding structure 111 and the supporting frame 14, the right-angle folding structure 111 and the supporting frame 14 can better limit the position of the sealing ring 13, so that the sealing ring 13 can be stably connected. The second portion 1323 abuts between the upper cover 12 and the supporting frame 14, and the first sealing portion 131 is located at a connection point of the first portion 1322 and the second portion 1323. Because the second portion 1323 abuts between the upper cover 12 and the support bracket 14, the right-angle flange structure 111 and the support bracket 14 can better restrain the seal ring 13. Therefore, the gasket 13 is more stably attached to the inside of the button cell 10.
Referring to fig. 3 and 4, the upper cover 12 is provided with a protrusion 121, one end of the protrusion 121 is connected to the upper cover 12, and the other end of the protrusion 121 is located inside the housing 11. The provision of the projections 121 serves to increase the strength of the upper cover 12, so that the upper cover 12 is difficult to be damaged even if the button cell 10 is used by a user for a long time. The bump 121 and the upper cover 12 are integrally formed, so that a gap is not easily generated between the bump 121 and the upper cover 12, and the bump 121 and the upper cover 12 are firmly connected. The bump 121 and the upper cover 12 may be integrally formed through forging, die casting, or the like, the bump 121 and the upper cover 12 may also be connected through a welding process, and the bump 121 and the second tab may be connected through welding.
Referring to fig. 3 and 4, the upper cap 12 has a third contact surface 1212 facing the inside of the housing 11, the circumferential surface of the protrusion 121 is a fourth contact surface 1211, and both the third contact surface 1212 and the fourth contact surface 1211 are abutted against the second sealing portion 132. Since the third contact surface 1212 and the fourth contact surface 1211 both contact the second sealing portion 132, the connection between the upper lid 12 and the sealing ring 13 is stable. Therefore, looseness cannot be generated between the upper cover 12 and the sealing ring 13, and the upper cover 12 and the sealing ring 13 have a good sealing effect on the opening.
Referring to fig. 3 and 4, the upper cover 12 is a flat plate structure, and the upper cover 12 may be disposed parallel to the right-angle folding structure 111. Since the upper cover 12 can be arranged parallel to the right-angled hem structure 111, the structure of the upper cover 12 does not protrude from the button cell 10. Therefore, the button cell 10 has a small overall volume. Therefore, it is convenient for the user to carry the button cell 10. The upper cover 12 includes an upper cover body 122 and an extension 123, and the upper cover body 122 is connected to the protrusion 121. The extending portion 123 is annular and is disposed along the circumferential direction of the upper cap body 122, the inner side of the extending portion 123 is connected to the upper cap body 122, and the outer side of the extending portion 123 is connected to the first sealing portion 131. The third contact surface 1212 is provided on the extension portion 123, and the ring outside of the extension portion 123 is connected to the first sealing portion 131. Therefore, the extension 123 allows the upper cover 12 to be more tightly coupled to the gasket 13.
Referring to fig. 5 and 6, the button cell 10 includes a pressure relief valve 16, the pressure relief valve 16 is disposed at the other end of the housing 11 opposite to the opening, and the pressure relief valve 16 is used for performing explosion-proof operation on the button cell 10. When an abnormality such as a short circuit or overcharge occurs in the battery, air pressure is generated inside the battery. If the air pressure is continuously increased, the air pressure can burst the pressure release valve 16, so that the explosion-proof effect is achieved. The pressure relief valve 16 has three structures, a first through hole is arranged on the shell 11, and the button cell 10 comprises a pressure relief sheet. The pressure relief sheet is welded at the first through hole to form a pressure relief valve 16, which is the first structure of the pressure relief valve 16. The housing 11 is provided with a second through hole, the shape of the second through hole can be circular, square or oval, and the button cell 10 includes a plastic explosion-proof membrane. The plastic rupture membrane is hot-pressed and fused at the second through hole to form the pressure release valve 16, and the structure is the second structure of the pressure release valve 16. The pressure relief valve 16 is formed integrally with the housing 11, and this structure is a third structure of the pressure relief valve 16. The inside of shell 11 is provided with the annular first recess 161 of pressure release, and the outside of shell 11 is provided with annular second recess 162, and first recess 161 and second recess 162 all set up along the circumference of relief valve 16, and the diameter of second recess 162 is greater than the diameter of first recess 161. Fig. 5 and 6 show one of the preferred embodiments, and fig. 5 and 6 show a third configuration of the pressure relief valve 16.
The utility model discloses an installation flow does: when the button cell 10 is assembled, a pressure relief valve 16 is provided on the housing 11. Subsequently, the seal ring 13 is integrally connected to the upper cap 12 to form a first assembly. The sealing ring 13 and the upper cover 12 can be connected through in-mold plastic sleeving, the upper cover 12 and the sealing ring 13 can be assembled at first, and then the upper cover 12 and the sealing ring 13 are hot-pressed and melted into a whole. Meanwhile, the battery cell 15 is loaded into the inner cavity of the support frame 14, so that the support frame 14 and the battery cell 15 form a second assembly. The first assembly is installed in the inner cavity of the housing 11, and then a first tab is welded between the housing 11 and the battery cell 15. A second tab is welded between the upper cover 12 and the battery core 15, and then electrolyte is injected into the inner cavity of the support frame 14. Subsequently, the opening is sealed using a second component. At this time, the first seal portion 131 of the gasket 13 is connected between the upper cover 12 and the right-angle folding structure 111. The first portion 1322 of the second sealing portion 132 abuts between the right-angle folding structure 111 and the supporting frame 14, and the second portion 1323 of the second sealing portion 132 abuts between the upper cover 12 and the supporting frame 14. And, one end of the supporting bracket 14 is inserted into the card slot 1321. Then, the button cell 10 is placed in a fixture, the edge of the housing 11 close to the opening is bent towards the inner wall of the housing 11 by the fixture to form a right-angle folded edge structure 111, the right-angle folded edge structure 111 is packaged, and then the button cell 10 is mounted.
The utility model provides a button cell 10 with right angle hem structure, this button cell 10 include shell, upper cover, sealing washer, support frame, electric core. The upper cover and the sealing ring are arranged at the opening of the shell, and the sealing ring is connected between the upper cover and the shell in a sealing manner. One end of the support frame is connected with the inner wall of the shell, the other end of the support frame is connected with the sealing ring, and the battery cell is arranged inside the support frame. The shell includes right angle hem structure, and right angle hem structure is close to the inner wall bending type of open-ended edge to the shell by the shell and forms, and right angle hem structure is connected with the sealing washer. Because the right-angle folded edge structure is formed by bending the edge of the shell close to the opening towards the inner wall of the shell, the manufacturing process of the button cell 10 is simple, and the structural reliability of the button cell 10 is strong. Moreover, a support frame is arranged in the shell and can support the straight-angle folding structure. Therefore, the right-angle edge folding structure can be connected with the shell more stably, and the arrangement of the support frame avoids the problem that the right-angle edge folding structure is damaged easily.
Compared with the conventional button cell 10, the button cell 10 with the right-angle folded edge structure optimizes the structure and the processing technology of the shell. The right-angle folded edge structure and the sealing ring are arranged at the opening at the top of the shell, and the sealing ring is connected between the upper cover and the right-angle folded edge structure in a sealing manner, so that the sealing ring can be used for better sealing and insulating the button cell 10. Compare in traditional button cell 10 and set up turn-up structure and sealing washer in the inside of shell, this button cell 10 has the inner space advantage, effectively improves button cell 10's inner space utilization, the capacity of the battery of improvement. When the button battery 10 is assembled, firstly, the battery core is arranged in the inner cavity of the support frame to form a first assembly, meanwhile, the upper cover and the sealing ring form a second assembly, then the first assembly is arranged in the inner cavity of the shell, then, the second assembly is covered at the opening, and the opening of the shell is folded and pressed through the jig to form a right-angle folding structure for packaging. Compared with the traditional hemming structure, the right-angle hemming structure occupies smaller space. Therefore, the button cell 10 has a larger space for accommodating the cell therein, so that the energy density of the cell can be increased.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described 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, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A button cell with a right-angle folded edge structure is characterized by comprising:
the shell is of a cylindrical structure, and one end of the shell is provided with an opening;
the upper cover is arranged at the opening;
the sealing ring is arranged at the opening and is connected between the upper cover and the shell in a sealing manner;
the supporting frame is annular, the cross section of the supporting frame is L-shaped, the supporting frame is positioned in the shell, one end of the supporting frame is connected with the inner wall of the shell, and the other end of the supporting frame is connected with the sealing ring;
the battery cell is arranged inside the support frame;
one end of the first tab is connected with the battery cell, and the other end of the first tab is connected with the shell;
one end of the second tab is connected with the battery cell, and the other end of the second tab is connected with the upper cover;
the shell comprises a right-angle edge folding structure, the right-angle edge folding structure is formed by bending the edge, close to the opening, of the shell towards the inner wall of the shell, and the right-angle edge folding structure is connected with the sealing ring.
2. The button cell with the right-angle flanging structure according to claim 1, wherein the sealing ring comprises a first sealing part and a second sealing part which are connected with each other, the first sealing part is connected between the upper cover and the right-angle flanging structure, and the second sealing part is located inside the housing and connected to the supporting frame.
3. The button cell with the right-angle folded structure according to claim 2, wherein the second sealing portion includes a notch, the notch is provided on the other side of the second sealing portion with respect to the first sealing portion, and the other end of the support frame is embedded in the notch.
4. The button cell with the right-angle folded edge structure as claimed in claim 3, wherein the clamping groove comprises a first contact surface facing the inside of the housing and a second contact surface located at the adjacent side of the first contact surface, the second contact surface is opposite to the side wall facing the housing, and the first contact surface and the second contact surface are both abutted against the supporting frame.
5. The button cell with the right-angle folding structure according to claim 2, wherein the second sealing portion comprises a first portion and a second portion which are connected with each other, the first portion abuts between the right-angle folding structure and the support frame, the second portion abuts between the upper cover and the support frame, and the first sealing portion is folded at the joint of the first portion and the second portion.
6. The button cell with the right-angle folded edge structure as claimed in claim 2, wherein the upper cover is provided with a projection, one end of the projection is connected with the upper cover, and the other end of the projection is located inside the housing.
7. The button cell with the right-angle folded structure according to claim 6, wherein the upper cover has a third contact surface facing the inside of the housing, the circumferential surface of the protrusion is a fourth contact surface, and the third contact surface and the fourth contact surface are both abutted against the second sealing part.
8. The button cell with the right-angle folded edge structure as claimed in claim 6, wherein the lug and the upper cover are of an integral structure.
9. The button cell with the right-angle folded edge structure according to claim 6, wherein the upper cover is of a flat plate-shaped structure, the upper cover comprises an upper cover body and an extension portion, the upper cover body is connected with the projection, the extension portion is annular and arranged along the circumferential direction of the upper cover body, the inner side of the extension portion is connected with the upper cover body, and the outer side of the extension portion is connected with the first sealing portion.
10. The button cell with the right-angle folded structure according to claim 1, wherein the upper cover is disposed in parallel with the right-angle folded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222620249.5U CN218215500U (en) | 2022-09-30 | 2022-09-30 | Button cell with right-angle edge folding structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222620249.5U CN218215500U (en) | 2022-09-30 | 2022-09-30 | Button cell with right-angle edge folding structure |
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| CN218215500U true CN218215500U (en) | 2023-01-03 |
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| CN202222620249.5U Active CN218215500U (en) | 2022-09-30 | 2022-09-30 | Button cell with right-angle edge folding structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425340A (en) * | 2022-09-30 | 2022-12-02 | 路华置富电子(深圳)有限公司 | Button cell with right-angle edge folding structure |
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2022
- 2022-09-30 CN CN202222620249.5U patent/CN218215500U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425340A (en) * | 2022-09-30 | 2022-12-02 | 路华置富电子(深圳)有限公司 | Button cell with right-angle edge folding structure |
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