CN115000599A - Cylindrical battery cap structure and sealing method of cylindrical battery - Google Patents
Cylindrical battery cap structure and sealing method of cylindrical battery Download PDFInfo
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- CN115000599A CN115000599A CN202210745347.3A CN202210745347A CN115000599A CN 115000599 A CN115000599 A CN 115000599A CN 202210745347 A CN202210745347 A CN 202210745347A CN 115000599 A CN115000599 A CN 115000599A
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- cylindrical battery
- wall
- metal shell
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- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 97
- 239000002184 metal Substances 0.000 claims abstract description 97
- 230000002093 peripheral effect Effects 0.000 claims abstract description 41
- 238000003466 welding Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims description 24
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 229920001187 thermosetting polymer Polymers 0.000 claims description 22
- 229910000679 solder Inorganic materials 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The embodiment of the invention provides a cylindrical battery cap structure and a sealing method of a cylindrical battery, and relates to the technical field of battery manufacturing. The problem that the battery shell is low in efficiency in a peripheral welding mode is solved. The cylindrical battery cap structure comprises a metal shell and a cap, wherein an inwards concave groove is formed at one end edge of the metal shell; the cover cap is provided with an inner surface and an inner peripheral surface positioned on one side of the inner surface, the cover cap is sleeved on one end of the metal shell, which is provided with the groove, through the inner peripheral surface, and the inner peripheral surface is in sealing fit with the inner wall of the groove and is fixedly connected with the inner wall of the groove. A sealing method of a cylindrical battery is used for manufacturing a cap structure of the cylindrical battery. The mode assembly that the block and metal casing adopted the cover to establish, the inner periphery of block has spacing alignment effect to metal casing's one end border, only need establish the block cover can implement sealed laminating and connect fixedly on metal casing, need not additionally aim at the operation, makes things convenient for staff's operation more, improves work efficiency.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a cylindrical battery cap structure and a sealing method of a cylindrical battery.
Background
The cylindrical battery is a battery with high capacity, long cycle life and wide use environment temperature. The product is applied to solar lamps, lawn lamps, backup energy sources, electric tools, toy models and photovoltaic energy sources.
The metal casing and the block of cylinder battery adopt the mode welding of peripheral welding, need accurate alignment block and the metal casing between the position weld again, processing requires highly, influences work efficiency.
Disclosure of Invention
Objects of the present invention include, for example, providing a cylindrical battery cap structure that can ameliorate the problem of inefficiency of battery cases using perimeter welding.
The invention also aims to provide a sealing method of the cylindrical battery, which can solve the problem of low efficiency of a battery shell adopting a peripheral welding mode.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a cylindrical battery cap structure, which comprises a metal shell and a cap, wherein an inwards concave groove is formed at one end edge of the metal shell; the cap is provided with an inner surface and an inner peripheral surface positioned on one side of the inner surface, the cap is used for being sleeved on one end, provided with the groove, of the metal shell through the inner peripheral surface, and the inner peripheral surface is in sealing fit with the inner wall of the groove and is fixedly connected with the inner wall of the groove.
In addition, the cylindrical battery cap structure provided by the embodiment of the invention can also have the following additional technical characteristics:
optionally, the cross-sectional shape of the groove along the axial direction of the metal shell is V-shaped.
Optionally, the inner wall of the groove comprises an upper inclined wall and a lower inclined wall which are arranged at an included angle; the upper inclined wall is attached to the inner peripheral surface of the cap, and the upper inclined wall has an acting force that presses the inner peripheral surface of the cap toward the lower inclined wall.
Optionally, the cylindrical battery cap structure further comprises thermosetting adhesive; the inner circumferential surface of the cap and the inner wall of the groove are fixedly bonded through the thermosetting adhesive.
Optionally, the cylindrical battery cap structure further comprises solder; the inner circumferential surface of the cap and the inner wall of the groove are fixed through welding of the solder.
The embodiment of the invention also provides a sealing method of the cylindrical battery. The method for manufacturing the cap structure of the cylindrical battery comprises the following steps:
sleeving the cap on one end of the metal shell, wherein the groove is formed in the end;
and attaching, connecting and fixing the inner peripheral surface of the cap and the inner wall of the groove.
Optionally, the method for sealing a cylindrical battery further includes the step before the step of sleeving the cap on the end of the metal shell where the groove is provided: placing thermosetting adhesive in the groove of the metal shell;
the step of attaching, connecting and fixing the inner peripheral surface of the cap to the inner wall of the groove comprises: rolling the cap to enable the inner circumferential surface of the cap to be attached to the inner wall of the groove; and heating the cap to ensure that the inner peripheral surface of the cap is fixedly bonded with the inner wall of the groove through the thermosetting adhesive.
Optionally, the method for sealing a cylindrical battery further includes the step before the step of sleeving the cap on the end of the metal shell where the groove is provided: placing solder into the recess of the metal housing;
the step of attaching, connecting and fixing the inner peripheral surface of the cap to the inner wall of the groove comprises: rolling the cap to enable the inner circumferential surface of the cap to be attached to the inner wall of the groove; and welding the inner circumferential surface of the cap and the inner wall of the groove by the solder.
Optionally, the method for sealing the cylindrical battery further comprises a step after the step of attaching, connecting and fixing the inner circumferential surface of the cap to the inner wall of the groove:
and pressurizing the cap along the axial direction of the metal shell so as to compress the opening of the groove and press and fix the inner peripheral surface of the cap attached to the inner wall of the groove.
Optionally, the method for sealing a cylindrical battery further includes the step before the step of sleeving the cap on the end of the metal shell where the groove is provided:
and rolling a groove at one end edge of the metal shell to form the groove.
The cylindrical battery cap structure and the sealing method of the cylindrical battery of the embodiment of the invention have the beneficial effects that:
the cylindrical battery cap structure comprises a metal shell and a cap, wherein an inwards concave groove is formed at one end edge of the metal shell; the cover cap is provided with an inner surface and an inner peripheral surface positioned on one side of the inner surface, the cover cap is sleeved on one end of the metal shell, which is provided with the groove, through the inner peripheral surface, and the inner peripheral surface is in sealing fit with the inner wall of the groove and is fixedly connected with the inner wall of the groove.
The block has internal surface and inner peripheral surface, and the inner peripheral surface of block has spacing alignment's effect to the one end border of metal casing, only need to overlap the block cover and establish sealed laminating and connect fixedly on the metal casing, need not additionally aim at the operation, makes things convenient for staff's operation more, improves work efficiency. The problem of battery case adopt the mode inefficiency of peripheral weld is improved.
Meanwhile, the cover cap and the metal shell are sleeved, so that the usable space in the battery can be ensured as far as possible, the space utilization rate is improved, and the effect of large capacity is achieved.
The sealing method of the cylindrical battery is used for manufacturing the cap structure of the cylindrical battery. The problem that the battery shell is low in efficiency due to the adoption of a peripheral welding mode can be solved, and the working efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a cap in a cylindrical battery cap structure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a metal housing in a cap structure of a cylindrical battery according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first state of a cap and a metal shell in a cylindrical battery cap structure according to an embodiment of the present invention;
fig. 4 is a structural schematic diagram of a second state of a cap and a metal shell in a cylindrical battery cap structure according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a cap and a metal shell in a cylindrical battery cap structure according to an embodiment of the present invention in a third state;
fig. 6 is a block diagram illustrating a step of using thermosetting adhesive in the method for sealing a cylindrical battery according to the embodiment of the present invention;
fig. 7 is a block diagram illustrating a step of welding in the method for sealing a cylindrical battery according to an embodiment of the present invention.
Icon: 10-cylindrical battery cap structure; 100-a metal housing; 110-a groove; 111-upper inclined wall; 112-lower sloping wall; 200-a cap; 210-an inner surface; 220-inner peripheral surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The cylindrical battery cap structure 10 provided in the present embodiment will be described in detail with reference to fig. 1 to 7.
Referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides a cylindrical battery cap structure 10, which includes a metal shell 100 and a cap 200, wherein an end edge of the metal shell 100 forms a concave groove 110; the cap 200 has an inner surface 210 and an inner peripheral surface 220 located at one side of the inner surface 210, the cap 200 is configured to be sleeved on one end of the metal shell 100 where the groove 110 is located through the inner peripheral surface 220, and the inner peripheral surface 220 is in sealing fit with and is connected and fixed to an inner wall of the groove 110.
The metal housing 100 may be a steel or aluminum housing. The metal case 100 has a hollow cylindrical shape. The metal shell 100 has two opposite ends, and at least one end of the metal shell 100 is open and provided with a groove 110. In this embodiment, a groove 110 is disposed at an edge of one end of the metal shell 100, and is matched with the cap 200. In other embodiments, the metal shell 100 has two ends each provided with a groove 110, and the two ends are connected and fixed with the cap 200 after being sleeved. The term "concave" in the "concave groove 110" refers to a concave in the direction from the outside to the inside of the metal shell 100. The groove 110 of the metal shell 100 may be formed by roll forming or die extrusion.
The cap 200 has a circular shape, an inner surface 210 has a circular shape, and an inner peripheral surface 220 has a circular ring shape. The inner peripheral surface 220 of the cap 200 has a function of limiting and aligning one end edge of the metal shell 100, the cap 200 is sleeved on one end of the metal shell 100, where the groove 110 is arranged, under the guiding action of the inner peripheral surface 220, and then the inner peripheral surface 220 and the inner wall of the groove 110 can be attached and connected and fixed. The whole process is simple and convenient to operate, extra alignment operation is not needed, and the working efficiency is obviously improved. Meanwhile, the design of the groove 110 helps to reinforce the connection and fixation after the inner circumferential surface 220 of the cap 200 is attached to the inner wall of the groove 110. Moreover, the cap 200 and the metal shell 100 are sleeved, so that the cap 200 does not occupy the space in the metal shell 100, the usable space in the battery can be ensured as much as possible, the space utilization rate is improved, and the effect of large capacity is achieved.
Referring to fig. 2, in the present embodiment, the groove 110 has a V-shaped cross-sectional shape along the axial direction of the metal shell 100. The V-shaped groove 110 is simple in structure and processing, and the rolling groove operation after the cap 200 is sleeved is more convenient. In other embodiments, the recess 110 may have other shapes, such as a semicircular shape, so long as the processing and forming of the recess 110 of the metal shell 100 and the fitting of the inner circumferential surface 220 of the cap 200 with the recess 110 are facilitated.
Referring to fig. 2, 3 and 4, in the present embodiment, the inner wall of the groove 110 includes an upper inclined wall 111 and a lower inclined wall 112 disposed at an included angle; the upper inclined wall 111 is fitted to the inner peripheral surface 220 of the cap 200, and the upper inclined wall 111 has a force that presses the inner peripheral surface 220 of the cap 200 against the lower inclined wall 112. Specifically, the upper inclined wall 111 and the lower inclined wall 112 form a V-shaped groove 110.
Referring to fig. 3, after the cap 200 is sleeved on the metal shell 100 for connection and fixation, the cap 200 may be pressed to press the cap 200 downward, so that the gap between the upper inclined wall 111 and the lower inclined wall 112 is reduced, and the structure shown in fig. 4 with a smaller opening of the groove 110 is obtained, at this time, the upper inclined wall 111 has a downward pressing force on the cap 200 to press and fix the cap 200, so as to prevent the cap 200 from being separated from the metal shell 100.
The inner circumferential surface 220 of the cap 200 may have a width that is only suitable for the upper sloped wall 111, or may have a width that is suitable for both the upper sloped wall 111 and the lower sloped wall 112.
In this embodiment, the cylindrical battery cap structure 10 further includes thermosetting adhesive; the inner peripheral surface 220 of the cap 200 is fixedly bonded to the inner wall of the groove 110 by thermosetting adhesive.
The thermosetting adhesive combines the characteristics of hot melt adhesive and structural adhesive, and has the advantages of fast curing, high strength, no organic solvent and 100 percent of solid content. The adhesive can be suitable for bonding different surfaces according to different viscosities, curing times and additives.
When in operation, only thermosetting adhesive needs to be put into the groove 110, and then the cap 200 is sleeved on the metal shell 100; then, after the cap 200 is rolled, the inner circumferential surface 220 of the cap 200 is matched with the inner wall of the groove 110; and heating the cap 200 again to enable the thermosetting adhesive to bond and fix the cap 200 and the groove 110.
In this embodiment, the cylindrical battery cap structure 10 further includes solder; the inner circumferential surface 220 of the cap 200 is fixed to the inner wall of the recess 110 by soldering.
Solder is a generic term for metal alloy materials used to add to welds, weld overlays and braze joints. Including welding wire, welding rod, brazing filler metal, etc. In this embodiment, the joint between the cap 200 and the metal case 100 is welded by soldering, which is a welding method in which a low-melting-point metal solder is melted by heating and then penetrates into and fills the gap at the joint between the metal members. The solder is often a tin-based alloy.
In this embodiment, the inner circumferential surface 220 of the cap 200 and the inner wall of the groove 110 may be bonded and fixed by thermosetting adhesive or may be welded by solder.
According to the cylindrical battery cap structure 10 provided by the present embodiment, the operation principle of the cylindrical battery cap structure 10 is as follows: by utilizing the limiting and aligning function of the inner peripheral surface 220 of the cap 200, the cap 200 is guided to be sleeved on one end of the metal shell 100 provided with the groove 110, no additional aligning process or tool is needed, the operation is simple, and then the inner peripheral surface 220 of the cap 200 is attached and connected with the inner wall of the groove 110 for fixation.
The cylindrical battery cap structure 10 provided by the embodiment has at least the following advantages:
the cap 200 has an inner surface 210 and an inner peripheral surface 220, the inner peripheral surface 220 of the cap 200 has a limiting and aligning effect on one end edge of the metal shell 100, the cap 200 can be hermetically attached and fixedly connected only by being sleeved on the metal shell 100, additional aligning operation is not needed, operation of workers is facilitated, the working efficiency is improved, and the problem of low efficiency of the battery shell in a peripheral welding mode is solved.
The cap 200 and the metal shell 100 are sleeved, so that the usable space in the battery can be ensured as much as possible, the space utilization rate is improved, and the effect of large capacity is achieved.
Referring to fig. 1 to 7, an embodiment of the present invention further provides a method for sealing a cylindrical battery, which is used for manufacturing the above-mentioned cylindrical battery cap structure 10, and the method for sealing the cylindrical battery includes: sleeving the cap 200 on one end of the metal shell 100, where the groove 110 is arranged; the inner circumferential surface 220 of the cap 200 is attached to the inner wall of the groove 110 and fixed.
The cap 200 and the metal shell 100 are nested, and then are attached, connected and fixed, and may be bonded or welded. Contributing to improving the efficiency.
Referring to fig. 6, in the present embodiment, the method for sealing a cylindrical battery further includes the steps before the step of fitting the cap 200 on the end of the metal can 100 where the groove 110 is provided: an end edge of the metal case 100 is rolled to form a groove 110.
The metal case 100 is rolled to form a V-shaped groove 110 having an inner recess. Die extrusion may also be performed.
Referring to fig. 6, in the present embodiment, the method for sealing a cylindrical battery further includes the steps before the step of fitting the cap 200 on the end of the metal can 100 where the groove 110 is provided: placing thermosetting adhesive in the groove 110 of the metal shell 100; the step of attaching, connecting and fixing the inner circumferential surface 220 of the cap 200 to the inner wall of the groove 110 includes: rolling the cap 200 to make the inner circumferential surface 220 of the cap 200 fit with the inner wall of the groove 110; the cap 200 is heated so that the inner circumferential surface 220 of the cap 200 and the inner wall of the groove 110 are fixed by thermosetting adhesive.
Firstly, thermosetting adhesive is placed in the groove 110; placing a cap 200 on the metal shell 100, and performing groove rolling on the cap 200 to form a semi-V-shaped groove matched with the steel shell on the cap 200; the cap 200 is connected to the metal shell 100 by heating.
Referring to fig. 7, in the present embodiment, the method for sealing a cylindrical battery further includes the steps before the step of fitting the cap 200 on the end of the metal shell 100 where the groove 110 is provided: placing solder in the groove 110 of the metal shell 100; the step of fitting, connecting and fixing the inner circumferential surface 220 of the cap 200 to the inner wall of the groove 110 includes: rolling the cap 200 to make the inner circumferential surface 220 of the cap 200 fit with the inner wall of the groove 110; the inner circumferential surface 220 of the cap 200 and the inner wall of the groove 110 are welded by solder.
Firstly, solder is placed in the groove 110; placing a cap 200 on the metal shell 100, and performing groove rolling on the cap 200 to form a semi-V-shaped groove matched with the steel shell on the cap 200; the cap 200 is connected to the metal shell 100 by welding.
Referring to fig. 3, 4, 5, 6 and 7, in the present embodiment, the method for sealing a cylindrical battery further includes a step after the step of attaching, connecting and fixing the inner circumferential surface 220 of the cap 200 to the inner wall of the groove 110: the cap 200 is pressurized in the axial direction of the metal shell 100 to compress the opening of the groove 110 to press and fix the inner circumferential surface 220 of the cap 200, which is in close contact with the inner wall of the groove 110.
The cap 200 is partially pressed and fixed by pressing, and the opening size of the pressing groove 110 is shown in different degrees in fig. 4 and 5. Further pressing down on the structure shown in fig. 4 results in the structure shown in fig. 5. A more stable sealing manner can be formed and the cap 200 does not fall off.
According to the sealing method of the cylindrical battery provided by the embodiment, the sealing method comprises the following implementation steps: the edge of one end of the metal shell 100 may be rolled or extruded by a die to form a groove 110; thermosetting adhesive or tin is added into the groove 110; placing the cap 200 on the upper end of the steel shell; the cap 200 is rolled to match the cap 200 with the metal shell 100; when thermosetting adhesive is added into the groove 110, the cap 200 is heated to ensure that the metal shell 100 is connected with the cap 200. Or in the case of tin added to the recess 110, laser soldering is performed on the joint of the cap 200 and the metal case 100. Finally, the cap 200 is pressurized to prevent the cap 200 from being separated from the steel shell.
Two examples are provided below to illustrate the sealing method of the cylindrical battery in detail.
Example 1
Referring to fig. 6, an end edge of the metal case 100 is rolled to form a groove 110; placing thermosetting adhesive in the groove 110 of the metal shell 100; sleeving the cap 200 on one end of the metal shell 100, where the groove 110 is arranged; rolling the cap 200 to make the inner circumferential surface 220 of the cap 200 fit with the inner wall of the groove 110; heating the cap 200 to make the inner circumferential surface 220 of the cap 200 and the inner wall of the groove 110 fixedly bonded by thermosetting adhesive; the cap 200 is pressurized in the axial direction of the metal shell 100 to compress the opening of the groove 110 to press and fix the inner circumferential surface 220 of the cap 200, which is in close contact with the inner wall of the groove 110.
Example 2
Referring to fig. 7, an end edge of the metal case 100 is rolled to form a groove 110; placing tin in the groove 110 of the metal shell 100; sleeving the cap 200 on one end of the metal shell 100, where the groove 110 is arranged; rolling the cap 200 to make the inner circumferential surface 220 of the cap 200 fit with the inner wall of the groove 110; welding the inner circumferential surface 220 of the cap 200 and the inner wall of the groove 110 by tin; the cap 200 is pressurized in the axial direction of the metal shell 100 to compress the opening of the groove 110 to press and fix the inner circumferential surface 220 of the cap 200, which is in close contact with the inner wall of the groove 110.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A cylindrical battery cap structure, comprising:
the metal shell (100), one end edge of the metal shell (100) forms an inward concave groove (110);
and the cap (200), the cap (200) is provided with an inner surface (210) and an inner circumferential surface (220) positioned on one side of the inner surface (210), the cap (200) is used for being sleeved on one end, provided with the groove (110), of the metal shell (100) through the inner circumferential surface (220), and the inner circumferential surface (220) is in sealing fit with, connected and fixed with the inner wall of the groove (110).
2. The cylindrical battery cap structure of claim 1, wherein:
the cross section of the groove (110) along the axial direction of the metal shell (100) is V-shaped.
3. The cylindrical battery cap structure of claim 2, wherein:
the inner wall of the groove (110) comprises an upper inclined wall (111) and a lower inclined wall (112) which form an included angle; the upper inclined wall (111) is in contact with an inner peripheral surface (220) of the cap (200), and the upper inclined wall (111) has a force that presses the inner peripheral surface (220) of the cap (200) against the lower inclined wall (112).
4. The cylindrical battery cap structure of any one of claims 1-3, wherein:
the cylindrical battery cap structure further comprises thermosetting adhesive; the inner circumferential surface (220) of the cover cap (200) is fixedly bonded with the inner wall of the groove (110) through the thermosetting adhesive.
5. The cylindrical battery cap structure of any one of claims 1-3, wherein:
the cylindrical battery cap structure further comprises solder; the inner circumferential surface (220) of the cap (200) and the inner wall of the groove (110) are fixed by welding through the welding material.
6. A method for sealing a cylindrical battery, which is used for manufacturing the cylindrical battery cap structure according to any one of claims 1 to 5, wherein the method for sealing the cylindrical battery comprises the following steps:
sleeving the cover cap (200) on one end of the metal shell (100) provided with the groove (110);
and fitting, connecting and fixing the inner circumferential surface (220) of the cap (200) and the inner wall of the groove (110).
7. A method of sealing a cylindrical battery according to claim 6, wherein:
the method for sealing the cylindrical battery further comprises the following steps before the step of sleeving the cap (200) on the end, provided with the groove (110), of the metal shell (100): placing thermosetting adhesive in the groove (110) of the metal shell (100);
the step of fitting, connecting and fixing the inner circumferential surface (220) of the cap (200) to the inner wall of the groove (110) includes: rolling the cap (200) to make the inner circumferential surface (220) of the cap (200) fit with the inner wall of the groove (110); and heating the cap (200) to ensure that the inner circumferential surface (220) of the cap (200) and the inner wall of the groove (110) are fixedly bonded through the thermosetting adhesive.
8. A method of sealing a cylindrical battery according to claim 6, wherein:
the method for sealing the cylindrical battery further comprises the following steps before the step of sleeving the cap (200) on the end, provided with the groove (110), of the metal shell (100): placing solder within the recess (110) of the metal housing (100);
the step of fitting, connecting and fixing the inner circumferential surface (220) of the cap (200) to the inner wall of the groove (110) includes: rolling the cap (200) to make the inner circumferential surface (220) of the cap (200) fit with the inner wall of the groove (110); and welding the inner circumferential surface (220) of the cap (200) and the inner wall of the groove (110) by the solder.
9. The method for sealing a cylindrical battery according to any one of claims 6 to 7, wherein:
the method for sealing the cylindrical battery further comprises the following steps after the step of attaching, connecting and fixing the inner circumferential surface (220) of the cap (200) and the inner wall of the groove (110):
and pressurizing the cap (200) along the axial direction of the metal shell (100) to compress the opening of the groove (110) so as to press and fix the inner circumferential surface (220) of the cap (200) which is attached to the inner wall of the groove (110).
10. A method for sealing a cylindrical battery according to any one of claims 6 to 7, wherein:
the method for sealing the cylindrical battery further comprises the following steps before the step of sleeving the cap (200) on one end of the metal shell (100) provided with the groove (110):
and rolling a groove at one end edge of the metal shell (100) to form the groove (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745347.3A CN115000599A (en) | 2022-06-27 | 2022-06-27 | Cylindrical battery cap structure and sealing method of cylindrical battery |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104206A (en) * | 2017-06-06 | 2017-08-29 | 惠州亿纬锂能股份有限公司 | A kind of duricrust battery container sealing structure and its processing technology |
| CN207338446U (en) * | 2017-05-16 | 2018-05-08 | 昆明雅信科技有限公司 | A kind of safe lithium battery cap |
| CN111162210A (en) * | 2020-03-16 | 2020-05-15 | 惠州亿纬锂能股份有限公司 | Secondary lithium ion bean type battery and manufacturing method thereof |
| CN213878223U (en) * | 2020-12-16 | 2021-08-03 | 惠州市德能电池有限公司 | Novel button cell |
| CN114628794A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery and manufacturing process thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207338446U (en) * | 2017-05-16 | 2018-05-08 | 昆明雅信科技有限公司 | A kind of safe lithium battery cap |
| CN107104206A (en) * | 2017-06-06 | 2017-08-29 | 惠州亿纬锂能股份有限公司 | A kind of duricrust battery container sealing structure and its processing technology |
| CN111162210A (en) * | 2020-03-16 | 2020-05-15 | 惠州亿纬锂能股份有限公司 | Secondary lithium ion bean type battery and manufacturing method thereof |
| CN213878223U (en) * | 2020-12-16 | 2021-08-03 | 惠州市德能电池有限公司 | Novel button cell |
| CN114628794A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery and manufacturing process thereof |
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