CN114094291B - Sealant nail, battery cover plate and sealing method - Google Patents
Sealant nail, battery cover plate and sealing method Download PDFInfo
- Publication number
- CN114094291B CN114094291B CN202111590227.2A CN202111590227A CN114094291B CN 114094291 B CN114094291 B CN 114094291B CN 202111590227 A CN202111590227 A CN 202111590227A CN 114094291 B CN114094291 B CN 114094291B
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- glue
- main plug
- nail
- hole
- nail main
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- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 239000000565 sealant Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003292 glue Substances 0.000 claims abstract description 181
- 238000002347 injection Methods 0.000 claims abstract description 57
- 239000007924 injection Substances 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 239000000243 solution Substances 0.000 claims abstract description 23
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 13
- 238000003848 UV Light-Curing Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
- H01M50/645—Plugs
-
- 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
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The embodiment of the application provides a sealant nail, a battery cover plate and a sealing method, and relates to the technical field of batteries. The sealing glue nail, the battery cover plate and the sealing method comprise a first glue nail main plug and a second glue nail main plug which are mutually connected, wherein the first glue nail main plug is arranged in the middle of the second glue nail main plug, the first glue nail main plug is used for being matched with a through hole section of a liquid injection hole, and the second glue nail main plug is used for being matched with a sinking groove of the liquid injection hole; the second glue nail main plug is provided with a glue hole along the length direction of the second glue nail main plug, and is used for injecting glue solution to bond the second glue nail main plug on the inner bottom wall of the sinking groove; the edge of the second rubber nail main plug far away from the first rubber nail main plug is provided with a notch for dispensing and sealing so as to bond the second rubber nail main plug on the inner side wall of the sinking groove.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a sealant nail, a battery cover plate and a sealing method.
Background
In order to respond to the call of energy conservation and emission reduction, the new energy automobile industry rapidly develops, and the development of a power battery of the new energy automobile is driven. As a core part of the new energy automobile, the power battery has a decisive effect on the performance of the whole automobile. The power battery is manufactured by a plurality of parts needing to be welded, including tab welding, soft connection welding and sealing nail welding. As a final process of welding the power battery, the welding of the sealing nails is of great importance, and once welding defects exist, the power battery is scrapped.
After the shell of the power battery is welded, electrolyte is injected through the liquid injection port of the cover plate, then the rubber plug is plugged, and the power battery is conveyed to the sealing nail welding station for final welding procedures. However, during the process of filling and carrying the power battery, part of the electrolyte can remain in the accommodating groove of the cover plate communicated with the filling port, crystals are formed after long-time standing, and the problem of inclusion or explosion point can occur when the sealing nail is welded on the cover plate.
At present, the final sealing after the liquid injection of the square lithium ion power battery in the lithium battery industry adopts an aluminum alloy sheet, namely a sealing aluminum nail in the industry, and is matched with the laser welding of a top cover liquid injection hole. Because of impurities and oil stains in aluminum nails, and the shortcomings of the laser welding process itself, weld seams, cracks (cracks that tend to cause weld seams due to cold forming, cold work hardening and residual stresses due to some caps), ridges, depressions, polarization, pinholes, and nail burning conditions can occur during the welding process. These defects seriously affect the voltage withstand capability and sealing performance of the cell, resulting in cell rejection or cell safety events.
Disclosure of Invention
The object of the present application consists, for example, in providing a sealant nail which solves the problems mentioned in the background art.
The object of the present application is also to provide a battery cover plate which solves the problems mentioned in the background art.
The object of the present application is also to provide a sealing method which solves the problems mentioned in the background art.
Embodiments of the application may be implemented as follows:
the embodiment of the application provides a sealant nail, which comprises a first main stopper and a second main stopper which are mutually connected, wherein the first main stopper is arranged in the middle of the second main stopper, the first main stopper is used for being matched with a through hole section of a liquid injection hole, and the second main stopper is used for being matched with a sinking groove of the liquid injection hole;
the second glue nail main plug is provided with a glue hole along the length direction of the second glue nail main plug, and is used for injecting glue solution to bond the second glue nail main plug on the inner bottom wall of the sinking groove;
the edge of the second rubber nail main plug, which is far away from the first rubber nail main plug, is provided with a notch for dispensing and sealing so as to bond the second rubber nail main plug on the inner side wall of the sinking groove.
Optionally, the glue holes include a plurality of first glue holes and a plurality of second glue holes, the plurality of first glue holes and the plurality of second glue holes are all arranged along the circumferential direction, and the first glue holes are located at the inner sides of the second glue holes;
the surface of the second rubber nail main plug, which faces the first rubber nail main plug, is provided with annular grooves which are respectively communicated with a plurality of second rubber holes.
Optionally, the first glue hole is located near the side wall of the first glue nail main plug and is arranged towards the first guide angle of the liquid injection hole.
Optionally, one end of the first rubber nail main plug is connected to the middle part of the second rubber nail main plug, and the other end extends towards the direction away from the second rubber nail main plug;
the edge of the first rubber nail main plug, which is far away from the second rubber nail main plug, is provided with a second guide angle, so that the cross-sectional area of the end surface of the first rubber nail main plug, which is far away from the second rubber nail main plug, is smaller than that of the rubber nail main body of the first rubber nail main plug.
Optionally, a third guiding angle is arranged at the edge of the second main plug facing the first main plug, so that the cross-sectional area of the end face of the second main plug facing the first main plug is smaller than that of the main body of the second main plug.
Optionally, the first glue nail main plug is in interference fit with the through hole of the liquid injection hole.
The embodiment of the application also provides a battery cover plate, which comprises a plate body and the sealant nails, wherein the plate body is provided with liquid injection holes;
the first rubber nail main plug is matched with the through hole section of the liquid injection hole;
the second rubber nail main plug is matched with the sinking groove of the liquid injection hole.
Optionally, the through hole is formed in the inner bottom wall of the sinking groove, and a second guide angle is formed at the edge of the first rubber nail main plug, which is far away from the second rubber nail main plug;
a first guide angle is arranged on the hole wall, close to the sinking groove, of the through hole and is used for guiding the second guide angle;
and a limited angle is arranged on the hole wall of the through hole far away from the sinking groove and is used for being matched with the second guide angle.
Optionally, a plurality of first glue holes are formed in the second glue nail main plug, and the first glue holes are arranged towards the first guide angles.
The embodiment of the application also provides a sealing method which is applied to the battery cover plate, and comprises the following steps: aligning the sealant nails with the liquid injection holes;
pressing the sealant nails into the liquid injection holes, so that the first main plugs of the sealant nails are matched with the through holes, and the second main plugs of the sealant nails are matched with the sinking grooves;
injecting glue into the glue holes to enable the second glue nail main plugs to be adhered to the inner bottom wall of the sinking groove;
dispensing and sealing the notch to adhere the second adhesive nail main plug to the inner side wall of the sinking groove;
the gap is optically heated to cure the glue.
The sealant nail, the battery cover plate and the sealing method provided by the embodiment of the application have the beneficial effects that: when the liquid injection hole is sealed, the first rubber nail main plug is pressed into the through hole of the liquid injection hole, and the second rubber nail main plug is pressed into the sinking groove of the liquid injection hole; then injecting glue solution into the glue holes so as to bond the second glue nail main plug on the inner bottom wall of the sinking groove, and then dispensing and sealing the notch so as to bond the second glue nail main plug on the inner side wall of the sinking groove, so that the sealing glue nail is firmly connected into the liquid injection hole and seals the liquid injection hole; the whole sealing process is free from welding, so that the conditions of welding seams, cracks, bulges, pits, polarized lights, pinholes and nails are effectively avoided, and the voltage endurance capability, the sealing performance and the safety performance of the battery cell can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a sealant nail according to an embodiment of the present application;
FIG. 2 is a schematic view of a battery cover plate according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a battery cover plate in an embodiment of the application;
FIG. 4 is a flow chart of a sealing method according to an embodiment of the application.
Icon: 100-sealing glue nails; 110-a first tack main plug; 111-the head of the glue nail; 112-a tack body; 113-a second guide angle; 120-a second glue nail main plug; 121-glue holes; 1211-a first glue hole; 1212-second glue holes; 122-notch; 123-annular grooves; 124-third guide angle; 200-battery cover plate; 210-a liquid injection hole; 211-through holes; 212-a sink; 213-first guide angle; 214-limit angle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application 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 application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
The inventor of the application finds that the aluminum alloy sheet, namely the sealing aluminum nail in the industry, is matched with the laser welding of the top cover liquid injection hole in the current lithium battery industry. Because of impurities and greasy dirt of the aluminum nails and the defects of the laser welding process, welding seams, cracks, ridges, pits, polarized light, pinholes and nail burning can be generated in the welding process. These defects seriously affect the voltage withstand capability and sealing performance of the cell, resulting in cell rejection or cell safety events. The embodiment provides a battery glue nail for solving the technical problems.
Referring to fig. 1-3, the sealant 100 provided in this embodiment includes a first main plug 110 and a second main plug 120 connected to each other, the first main plug 110 is disposed in the middle of the second main plug 120, the first main plug 110 is configured to cooperate with a through hole 211 of the injection hole 210, and the second main plug 120 is configured to cooperate with a sink 212 of the injection hole 210; the second main plug 120 is provided with a glue hole 121 along the length direction thereof for injecting glue solution to bond the second main plug 120 to the inner bottom wall of the sinking groove 212; the edge of the second tack main plug 120 remote from the first tack main plug 110 is provided with a notch 122 for dispensing and sealing to adhere the second tack main plug 120 to the inside wall of the sink 212.
In one embodiment, the first and second main plugs 110 and 120 are both substantially cylindrical, the first main plug 110 has a smaller cross-sectional area at the end than the second main plug 120, and the first and second main plugs 110 and 120 are coaxially connected.
The glue hole 121 penetrates through the end face of the second glue nail main plug 120, is staggered with the first glue nail main plug 110 and is opposite to the inner bottom wall of the sinking groove 212; the notch 122 is an annular notch 122.
It should be noted that dispensing is a process, also called glue application, glue spreading, glue filling, glue dripping, etc., and is to spread, fill and drop glue, oil or other liquid onto a product, so that the product has the functions of pasting, filling, insulating, fixing, smoothing surface, etc.
When the liquid injection hole 210 is sealed, the first rubber nail main plug 110 is pressed into the through hole 211 of the liquid injection hole 210, and the second rubber nail main plug 120 is pressed into the sinking groove 212 of the liquid injection hole 210; then glue solution is injected into the glue hole 121 to bond the second glue nail main plug 120 to the inner bottom wall of the sinking groove 212, and glue dispensing and sealing are performed on the notch 122 to bond the second glue nail main plug 120 to the inner side wall of the sinking groove 212, so that the sealing glue nail 100 is firmly connected into the liquid injection hole 210 and seals the liquid injection hole 210; the whole sealing process is free from welding, so that the conditions of welding seams, cracks, bulges, pits, polarized lights, pinholes and nails are effectively avoided, and the voltage endurance capability, the sealing performance and the safety performance of the battery cell can be improved.
In one embodiment, the glue holes 121 include a plurality of first glue holes 1211 and a plurality of second glue holes 1212, the plurality of first glue holes 1211 and the plurality of second glue holes 1212 are all circumferentially disposed, and the first glue holes 1211 are located inside the second glue holes 1212; the surface of the second adhesive nail main plug 120 facing the first adhesive nail main plug 110 is provided with annular grooves 123, and the annular grooves 123 are respectively communicated with a plurality of second adhesive holes 1212.
It should be noted that the first main plug 110 includes the connected head 111 and body 112, the first plurality of holes 1211 are uniformly distributed along a first circumference, the second plurality of holes 1212 are uniformly distributed along a second circumference, the diameter of the first circumference is smaller than that of the second circumference, and the diameter of the first circumference is larger than that of the cross section of the body 112.
By arranging the plurality of first glue holes 1211 and the plurality of second glue holes 1212, when glue is injected, glue solution is injected through the plurality of first glue holes 1211 and the plurality of second glue holes 1212 until the glue solution flows onto the inner bottom wall of the sinking tank 212 and adheres to the inner bottom wall of the sinking tank 212, and meanwhile the glue solution seals the plurality of first glue holes 1211 and the plurality of second glue holes 1212; when glue solution is injected through the second glue hole 1212, the glue solution flows into the annular groove 123 to be converged, so that the adhesive area of the glue solution is enlarged, and the adhesive effect is improved.
In one embodiment, the first glue hole 1211 is located near the sidewall of the first glue plug 110 and is disposed toward the first lead angle 213 of the injection hole 210.
The first guide angle 213 guides the first tack main plug 110 so that the first tack main plug 110 enters the through hole 211 when the first tack main plug 110 is inserted into the through hole 211. When the glue is injected into the first glue hole 1211, the glue flows through the first glue hole 1211 and fills the gap at the first guide angle 213 to seal the first guide angle 213.
In one embodiment, one end of the first main plug 110 is connected to the middle of the second main plug 120, and the other end extends away from the second main plug 120; the edge of the first staple main plug 110 remote from the second staple main plug 120 is provided with a second guide angle 113 such that the cross-sectional area of the end surface of the first staple main plug 110 remote from the second staple main plug 120 is smaller than the cross-sectional area of the staple main body 112 of the first staple main plug 110.
In this embodiment, the second guiding angle 113 is disposed on the adhesive nail head 111, so that the cross-sectional area of the end surface of the adhesive nail head 111 away from the adhesive nail main body 112 is smaller than the cross-sectional area of the adhesive nail main body 112.
During insertion of the first tack main plug 110 into the through hole 211, the first guide angle 213 guides the second guide angle 113 so that the first tack main plug 110 enters into the through hole 211.
In one embodiment, the edge of the second staple main plug 120 facing the first staple main plug 110 is provided with a third guide angle 124 such that the end surface cross-sectional area of the second staple main plug 120 facing the first staple main plug 110 is smaller than the main body cross-sectional area of the second staple main plug 120.
Similar to the principle that the first main plug of glue 110 is inserted into the through hole 211, the third guiding angle 124 guides the second main plug of glue 120 in the process that the second main plug of glue 120 is inserted into the countersink 212, so that the second main plug of glue 120 is clamped into the countersink 212.
In one embodiment, the first staple main plug 110 is in an interference fit with the through hole 211 of the injection port 210.
By having the first tack main plug 110 interference fit with the through hole 211 of the injection hole 210, sealing at the through hole 211 can be achieved after the first tack main plug 110 is inserted into the through hole 211.
The embodiment also provides a battery cover plate 200, which comprises a plate body and the sealant nails 100, wherein the plate body is provided with the liquid injection holes 210; the first glue plug 110 is matched with the section of the through hole 211 of the liquid injection hole 210; the second staple plug 120 mates with the sink 212 of the fill port 210.
It should be noted that, the through hole 211 is formed on the inner bottom wall of the countersunk groove 212, and the edge of the first main plug 110 away from the second main plug 120 is provided with the second guide angle 113; the through hole 211 is provided with the first guide angle 213 on the wall of the through hole close to the sinking groove 212, and is used for guiding the second guide angle 113; the hole wall of the through hole 211 far away from the sinking groove 212 is provided with a limiting angle 214 for being matched with the second guiding angle 113.
The limiting angle 214 is obliquely arranged inwards, and in the process of inserting the first main plug 110 into the through hole 211, the second guiding angle 113 enables the first main plug 110 to enter the through hole 211 more easily under the guiding action of the first guiding angle 213 until the second guiding angle 113 is attached to the limiting angle 214, and the limiting angle 214 limits the position of the first main plug 110 and prevents the sealant 100 from moving further.
In this embodiment, a plurality of first glue holes 1211 are formed on the second glue plug 120, and the first glue holes 1211 are disposed towards the first guiding angle 213.
When the glue is injected into the first glue hole 1211, the glue solution flows through the first glue hole 1211 and fills the void at the first guide angle 213 to seal the first guide angle 213.
Referring to fig. 4, the present embodiment further provides a sealing method applied to the battery cover plate 200, where the sealing method includes:
step S100, aligning the sealant nails 100 with the liquid injection holes 210.
The step is a nail preparation step, wherein the sealant nails 100 are taken and positioned by a clamp, so that the sealant nails 100 are vertically aligned with the liquid injection holes 210; it should be noted that, the fixture is provided with glue needles, the glue needles extend into the plurality of first glue holes 1211 and the plurality of second glue holes 1212 to prepare for glue, and the glue needles play a role in draining glue solution, so that the glue solution flows more smoothly.
Step S200, the sealant nails 100 are pressed into the liquid injection holes 210, so that the first main plug of the sealant nails 110 is matched with the through holes 211, and the second main plug of the sealant nails 120 is matched with the sinking groove 212.
In this step, the first glue nail main plug 110 is matched with the through hole 211 and the second glue nail main plug 120 is matched with the sinking groove 212 by using the fixture, so that the sealing glue nail 100 is pressed into the liquid injection hole 210, so as to ensure that the battery can not be displaced after being positioned, for example, the battery cover plate 200 is not easy to be displaced after the sealing glue nail 100 is pressed into the liquid injection hole 210.
In step S300, glue is injected into the glue hole 121 to adhere the second glue plug 120 to the inner bottom wall of the countersunk groove 212.
The step is a glue injection step, wherein glue is injected into the first glue hole 1211 and the second glue hole 1212 through positive pressure, glue solution fills the first glue hole 1211 and the second glue hole 1212 along with a glue needle, the glue solution injected into the first glue hole 1211 flows and adheres to the first guide angle 213, the glue solution injected into the second glue hole 1212 flows into the annular groove 123 and adheres to the inner bottom wall of the sinking groove 212, and the glue needle is pulled out after the glue injection is completed; thereby sealing between the second tack main plug 120 and the inner bottom wall of the countersink 212.
In step S400, the notch 122 is sealed by dispensing to adhere the second main plug 120 to the inner sidewall of the countersunk groove 212.
The step is a final sealing step of the glue nails, and the glue is dispensed at the notch 122 by a glue dispenser to adhere the second glue nail main plug 120 to the inner side wall of the sink 212, so as to seal between the second glue nail main plug 120 and the inner side wall of the sink 212.
Step S500, optical heating is performed at the notch 122 to cure the glue.
The baking step is to perform optical heating by a UV lamp, cure the glue solution at the notch 122 and improve the sealing effect.
It should be noted that UV curing is a photochemical reaction, that is, a process of applying a liquid curable material to a surface of a print substrate or a work piece by dispensing or coating, and hardening by irradiation of UV light, and UV curing is similar to a conventional drying process, but different in principle, conventional drying generally forms hardening by volatilization of a solvent in the coating material, and UV curing adhesion does not volatilize the solvent.
According to the sealant nail 100, the battery cover plate 200 and the sealing method provided in the embodiment, the working principle of the sealant nail 100, the battery cover plate 200 and the sealing method is as follows: when the liquid injection hole 210 of the battery cover plate 200 is sealed, the first glue nail main plug 110 is inserted into the through hole 211 of the liquid injection hole 210, and the second glue nail main plug 120 is inserted into the sinking groove 212 of the liquid injection hole 210 until the limiting angle 214 is matched with the second guiding angle 113 to position the sealing glue nail 100; glue is then injected into the first glue hole 1211 and the second glue hole 1212, and the glue is injected into the first glue hole 1211 and the second glue hole 1212, so that the second glue nail main plug 120 is simultaneously adhered to the inner bottom wall and the inner side wall of the sinking groove 212 while the first glue hole 1211 and the second glue hole 1212 are sealed, and the glue injection hole 210 is sealed. In the whole sealing process of the liquid injection hole 210, welding is not needed, so that the conditions of welding seams, cracks, bulges, pits, polarized lights, pinholes and nails are effectively avoided, and the voltage endurance, sealing performance and safety performance of the battery cell can be improved; in addition, the pressure resistance of the sealant nail 100 exceeds 0.8Mpa, thereby meeting the industry requirements.
In summary, the embodiment of the application provides the sealant nail 100, the battery cover plate 200 and the sealing method, when the liquid injection hole 210 is sealed, the sealant nail 100 is matched with the liquid injection hole 210, then the glue solution is injected into the glue hole 121 and the glue is injected into the gap 122 for sealing, so that the liquid injection hole 210 can be sealed without welding, and the voltage resistance, the sealing performance and the safety performance of the battery core are improved.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The sealing glue nail is characterized by comprising a first glue nail main plug and a second glue nail main plug which are connected with each other, wherein the first glue nail main plug is arranged in the middle of the second glue nail main plug, the first glue nail main plug is used for being matched with a through hole section of a liquid injection hole, and the second glue nail main plug is used for being matched with a sinking groove of the liquid injection hole;
the second glue nail main plug is provided with a glue hole along the length direction of the second glue nail main plug, and is used for injecting glue solution to bond the second glue nail main plug on the inner bottom wall of the sinking groove;
the edge of the second rubber nail main plug, which is far away from the first rubber nail main plug, is provided with a notch for dispensing and sealing so as to bond the second rubber nail main plug on the inner side wall of the sinking groove.
2. The sealant nail according to claim 1, wherein the glue hole comprises a plurality of first glue holes and a plurality of second glue holes, the plurality of first glue holes and the plurality of second glue holes are all circumferentially arranged, and the first glue holes are located inside the second glue holes;
the surface of the second rubber nail main plug, which faces the first rubber nail main plug, is provided with annular grooves which are respectively communicated with a plurality of second rubber holes.
3. The sealant nail according to claim 2, wherein the first glue hole is located adjacent to a side wall of the first glue nail main plug and is disposed toward a first guide angle of the liquid injection hole.
4. The sealant nail according to claim 1, wherein one end of the first main stopper is connected to the middle of the second main stopper, and the other end extends away from the second main stopper;
the edge of the first rubber nail main plug, which is far away from the second rubber nail main plug, is provided with a second guide angle, so that the cross-sectional area of the end surface of the first rubber nail main plug, which is far away from the second rubber nail main plug, is smaller than that of the rubber nail main body of the first rubber nail main plug.
5. The sealant according to claim 1, wherein the edge of the second staple main plug facing the first staple main plug is provided with a third guide angle such that the end face cross-sectional area of the second staple main plug facing the first staple main plug is smaller than the main body cross-sectional area of the second staple main plug.
6. The sealant nail according to claim 1, wherein the first nail main plug is in interference fit with the through hole of the liquid injection hole.
7. A battery cover plate, which is characterized by comprising a plate body and the sealant nails according to any one of claims 1-6, wherein the plate body is provided with liquid injection holes;
the first rubber nail main plug is matched with the through hole section of the liquid injection hole;
the second rubber nail main plug is matched with the sinking groove of the liquid injection hole.
8. The battery cover plate according to claim 7, wherein the through hole is formed in the inner bottom wall of the sinking groove, and a second guide angle is formed at the edge of the first rubber nail main plug away from the second rubber nail main plug;
a first guide angle is arranged on the hole wall, close to the sinking groove, of the through hole and is used for guiding the second guide angle;
and a limited angle is arranged on the hole wall of the through hole far away from the sinking groove and is used for being matched with the second guide angle.
9. The battery cover plate of claim 8, wherein the second glue pin main plug is provided with a plurality of first glue holes, and the first glue holes are arranged towards the first guide angle.
10. A sealing method applied to the battery cover plate according to any one of claims 7 to 9, the sealing method comprising:
aligning the sealant nails with the liquid injection holes;
pressing the sealant nails into the liquid injection holes, so that the first main plugs of the sealant nails are matched with the through holes, and the second main plugs of the sealant nails are matched with the sinking grooves;
injecting glue into the glue holes to enable the second glue nail main plugs to be adhered to the inner bottom wall of the sinking groove;
dispensing and sealing the notch to adhere the second adhesive nail main plug to the inner side wall of the sinking groove;
the gap is optically heated to cure the glue.
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| CN202111590227.2A CN114094291B (en) | 2021-12-23 | 2021-12-23 | Sealant nail, battery cover plate and sealing method |
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| CN202111590227.2A CN114094291B (en) | 2021-12-23 | 2021-12-23 | Sealant nail, battery cover plate and sealing method |
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| CN117855773B (en) * | 2024-03-04 | 2024-06-25 | 厦门海辰储能科技股份有限公司 | Top cover assembly, sealing process of liquid injection hole, energy storage device and energy storage system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207233794U (en) * | 2017-07-12 | 2018-04-13 | 东莞市沃泰通新能源有限公司 | A kind of lithium battery seal assembly |
| JP2018181617A (en) * | 2017-04-13 | 2018-11-15 | プライムアースＥｖエナジー株式会社 | Manufacturing method of secondary battery and secondary battery |
| CN208970625U (en) * | 2018-10-19 | 2019-06-11 | 合肥国轩高科动力能源有限公司 | Novel lithium ion battery cell annotates liquid hole seal structure |
| CN210006772U (en) * | 2019-08-29 | 2020-01-31 | 宁德时代新能源科技股份有限公司 | Top cap assembly and secondary battery |
| CN112467316A (en) * | 2020-12-14 | 2021-03-09 | 厦门海辰新能源科技有限公司 | Annotate liquid hole seal structure and power battery top cap |
| CN214505739U (en) * | 2021-03-09 | 2021-10-26 | 厦门海辰新能源科技有限公司 | Power battery seal nail and battery top cover based on glue injection sealing |
-
2021
- 2021-12-23 CN CN202111590227.2A patent/CN114094291B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018181617A (en) * | 2017-04-13 | 2018-11-15 | プライムアースＥｖエナジー株式会社 | Manufacturing method of secondary battery and secondary battery |
| CN207233794U (en) * | 2017-07-12 | 2018-04-13 | 东莞市沃泰通新能源有限公司 | A kind of lithium battery seal assembly |
| CN208970625U (en) * | 2018-10-19 | 2019-06-11 | 合肥国轩高科动力能源有限公司 | Novel lithium ion battery cell annotates liquid hole seal structure |
| CN210006772U (en) * | 2019-08-29 | 2020-01-31 | 宁德时代新能源科技股份有限公司 | Top cap assembly and secondary battery |
| CN112467316A (en) * | 2020-12-14 | 2021-03-09 | 厦门海辰新能源科技有限公司 | Annotate liquid hole seal structure and power battery top cap |
| CN214505739U (en) * | 2021-03-09 | 2021-10-26 | 厦门海辰新能源科技有限公司 | Power battery seal nail and battery top cover based on glue injection sealing |
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