CN108767144B - Sealing structure, battery, and method for manufacturing sealing structure - Google Patents
Sealing structure, battery, and method for manufacturing sealing structure Download PDFInfo
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- CN108767144B CN108767144B CN201810507797.2A CN201810507797A CN108767144B CN 108767144 B CN108767144 B CN 108767144B CN 201810507797 A CN201810507797 A CN 201810507797A CN 108767144 B CN108767144 B CN 108767144B
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- lower shell
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- edge
- sealant
- flanging
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- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 7
- 239000000565 sealant Substances 0.000 claims abstract description 66
- 238000005452 bending Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003292 glue Substances 0.000 description 28
- 238000001125 extrusion Methods 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 9
- 230000035882 stress Effects 0.000 description 7
- 230000032683 aging Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000463219 Epitheca Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- H01M50/183—Sealing members
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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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a sealing structure which comprises a lower shell, an upper shell and sealant, and is characterized in that the lower shell is provided with a lower shell side and a flanging, the flanging is formed by folding one end, far away from the bottom of the lower shell, of the lower shell side towards the outer side of the lower shell, the flanging is arranged obliquely outwards from top to bottom, an included angle between the flanging and the lower shell side is 10-60 degrees, the upper shell is provided with an upper shell side, the upper shell is fixedly connected with the lower shell, and the sealant is arranged between the upper shell side and the lower shell side and is used for sealing and insulating the upper shell and the lower shell. The sealing effect is good, and the sealing device is safe and reliable. The invention also provides a battery which comprises the sealing structure and has good sealing performance and long service life. The invention also provides a manufacturing method of the sealing structure, which is simple in process.
Description
Technical Field
The invention relates to the technical field of sealing, in particular to a sealing structure, a button cell comprising the sealing structure and a manufacturing method of the sealing structure.
Background
In the field of sealing technologies for electronic devices, the extrusion type edge sealing technology is a sealing method mainly used for some electronic devices (such as button cells) due to the convenience in operation and the simplicity of equipment required in the production process. The extruded edge-sealing structure of an electronic device generally includes an upper housing and a lower housing mated therewith. The upper shell is provided with a flanging which is turned over towards the outer side of the side wall of the lower shell, the flanging and the side wall of the lower shell are parallel or close to a parallel state, the upper shell is provided with a buckling edge which is arranged at the bottom of the flanging, injection molding glue is arranged between the side edge of the upper shell and the side edge of the lower shell to form a sealed environment, and the lower shell and the flanging which is perpendicular to the horizontal plane are used for fixing the injection molding glue to prevent the injection molding glue from falling off. However, sealing an electronic device in the above manner has the following disadvantages:
1. because the flanging and the side wall of the lower shell are parallel or close to a parallel state, the injection molding glue can be accommodated in a gap between the flanging and the side wall of the lower shell, so that the lower shell is easy to fall off, the sealing performance of an electronic device is lost, and the normal use is influenced;
2. after the electronic device is extruded and sealed, only extrusion force in the vertical direction exists between the buckling edge of the upper shell and the lower shell, and when the electronic device vibrates in the using process, horizontal dislocation displacement is easy to occur between the upper shell and the lower shell, so that the sealing performance of the electronic device is affected;
3. the service life is short to there is the potential safety hazard, along with electron device uses for a long time, the elasticity that can ageing make the injection molding glue weakens with moulding plastics gluey, produces the space between the contact surface between epitheca and the injection molding glue and the contact surface between inferior valve and the injection molding glue, leads to the phenomenon of electron device appearance weeping.
Disclosure of Invention
One object of the present invention is: the sealing structure is good in sealing effect, safe and reliable.
Another object of the invention is: provided is a battery having excellent sealing properties and a long service life.
Yet another object of the present invention is: a method for manufacturing a sealing structure is provided, which is simple in process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a seal structure includes casing, last casing and sealed glue down, the casing has casing side and turn-ups down, the turn-ups by the casing side is kept away from down the one end orientation of the bottom of casing down the outside of casing is rolled over and is formed, the turn-ups from top to bottom leans out the setting, just the turn-ups with contained angle between the casing side down is 10-60, it has the casing side to go up the casing, go up the casing with casing fixed connection down, sealed glue sets up go up the casing side with between the casing side down, be used for right go up the casing with casing sealing and insulation down.
As a preferable technical scheme of the sealing structure, a first arc structure is formed at a joint of the flange and the side edge of the lower shell.
As an optimal technical scheme of the sealing structure, the upper shell is provided with a buckling edge, the buckling edge is formed by bending one end of the side edge of the upper shell away from the top of the upper shell towards the inner side of the upper shell, the buckling edge is arranged below the flanging, and one side of the buckling edge, which is close to the flanging, is abutted to the sealing glue.
As a preferable technical scheme of the sealing structure, a first included angle is formed between the fastening edge and the turned edge, and the first included angle is 0-90 degrees.
As a preferable technical solution of the sealing structure, a vertical height of the flange is 20% -60% of a vertical height of the lower housing.
As a preferable technical scheme of the sealing structure, the vertical height of the flanging is 10% -90% of the vertical height of the sealant.
As a preferable technical solution of the sealing structure, an angle between the side of the lower case and the bottom of the lower case is 90 ° to 120 °.
The invention also provides a battery which comprises the sealing structure.
The invention also provides a manufacturing method of the sealing structure, which comprises the following steps:
step S100, providing a lower shell and an upper shell, wherein the lower shell is provided with a lower shell side edge, and the upper shell is provided with an upper shell side edge;
s200, turning over one end, far away from the bottom of the lower shell, of the side edge of the lower shell towards the outer side of the lower shell to form a turned edge, and inclining the turned edge from top to bottom to enable the included angle between the turned edge and the side edge of the lower shell to be 10-60 degrees;
step S300, injecting sealant between the side edge of the lower shell and the side edge of the upper shell, and enabling the flanging to be wrapped in the sealant;
s400, covering the upper shell on the periphery of the sealant, and extruding the upper shell and the lower shell to fixedly connect the upper shell and the lower shell;
and S500, bending one end of the side edge of the upper shell, which is far away from the top of the upper shell, towards the inner side of the upper shell to form a buckling edge, wherein one side of the buckling edge, which is close to the flanging, is abutted to the sealant.
The invention has the beneficial effects that: because the turn-ups from top to bottom leans out the setting, and the contained angle alpha between turn-ups and the lower casing side is 10-60 for produce the extrusion stress of vertical direction and horizontal direction simultaneously between last casing and the turn-ups, avoid because sealed glue age after the long time use make sealed elasticity weaken and lead to between the casing and the lower casing and sealed the contact surface between the glue and produce the space. In addition, the included angle alpha between the flanging and the side edge of the lower shell is set to be 10-60 degrees, a containing space capable of containing the sealant is formed between the flanging and the side edge of the lower shell, more injection molding glue can be injected between the side edge of the lower shell and the side edge of the upper shell, the contact area between the sealant and the flanging and the side edge of the lower shell is increased, the bonding force between the sealant and the lower shell is improved, and the sealing effect inside the electronic device is guaranteed.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic structural view of a sealing structure according to an embodiment.
Fig. 2 is a schematic structural diagram of the lower housing according to the embodiment.
Fig. 3 is a schematic structural view of the sealant and the lower case according to the embodiment.
In the figure:
1. a lower housing; 11. a lower shell side; 12. flanging; 2. an upper housing; 21. the side of the upper shell; 22. buckling edges; 3. sealing glue; 31. a first connection portion; 32. a second connecting portion.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a sealing structure which comprises a lower shell, an upper shell and sealant, wherein the lower shell is provided with a lower shell side and a flanging, the flanging is formed by folding one end, far away from the bottom of the lower shell, of the lower shell side towards the outer side of the lower shell, the flanging is arranged in an inclined mode from top to bottom and outwards, an included angle between the flanging and the lower shell side is 10-60 degrees, the upper shell is provided with an upper shell side, the upper shell is fixedly connected with the lower shell, and the sealant is arranged between the upper shell side and the lower shell side and is used for sealing and insulating the upper shell and the lower shell. Because the turn-ups from top to bottom leans out the setting, and the contained angle alpha between turn-ups and the lower casing side is 10-60 for the turn-ups produces the extrusion stress of vertical direction and horizontal direction simultaneously, avoids because sealed glue age after the long time of using and make the elasticity of sealed glue weaken and lead to between upper housing and the lower casing and sealed the contact surface between the glue and produce the space. In addition, the included angle alpha between the flanging and the side edge of the lower shell is set to be 10-60 degrees, a containing space capable of containing the sealant is formed between the flanging and the side edge of the lower shell, more injection molding glue can be injected between the side edge of the lower shell and the side edge of the upper shell, the contact area between the sealant and the flanging and the side edge of the lower shell is increased, the adhesive force between the sealant and the lower shell is improved, and the sealing effect inside the electronic device is improved.
As shown in fig. 1 to 3, in the present embodiment, a specific structure of the sealing structure of the present invention is described in detail by taking a battery as an example, wherein the sealing structure comprises a lower shell 1, an upper shell 2 and a sealant 3, the lower shell 1 is provided with a lower shell side 11 and a flanging 12, the turned-over edge 12 is formed by turning over one end of the side edge 11 of the lower shell far away from the bottom of the lower shell 1 towards the outer side of the lower shell 1, the turned-over edge 12 is obliquely arranged from top to bottom and outwards, the included angle alpha between the turned-over edge 12 and the side edge 11 of the lower shell is 10-60 degrees, and the upper shell 2 is provided with an upper shell side 21, the upper shell 2 is fixedly connected with the lower shell 1, the sealant 3 is arranged between the upper shell side 21 and the lower shell side 11, and is used for sealing and insulating the upper shell 2 and the lower shell 1. In the present embodiment, the upper case 2 corresponds to a positive electrode case of the battery, and the lower case 1 corresponds to a negative electrode case of the battery.
The scheme is that the included angle alpha between the flanging 12 and the lower shell side edge 11 is set to be 10-60 degrees, a receiving space capable of receiving a certain amount of the sealant 3 is formed between the burring 12 and the lower case side 11, and the burring 12 in the conventional sealing structure is parallel to the lower case side 11 or the burring 12 and the lower case side 11 are in a state close to being parallel different, increasing the receiving amount of the sealant 3 between the burring 12 and the lower case side 11, so that the battery can be manufactured without increasing the overall size of the battery, more sealant 3 can be injected between the lower shell side 11 and the upper shell side 21, the contact area between the sealant 3 and the flanging 12 and between the lower shell side 11 is increased, the bonding force between the sealant 3 and the lower shell 1 is improved, the sealing effect inside the battery is ensured, the leakage of the battery is effectively prevented, and the safety performance of the battery is improved. After the battery is sealed, namely the upper shell 2 and the lower shell 1 are fixedly connected with each other, because the flanging 12 is arranged obliquely from top to bottom, the included angle alpha between the flanging 12 and the side edge 11 of the lower shell is 10-60 degrees, the flanging 12 simultaneously generates extrusion stress in the vertical direction and the horizontal direction, the sealing property between the upper shell 2 and the lower shell 1 is enhanced, and the air permeability of the battery is ensured to be less than 10-9pa.m3And the sealant 3 is prevented from aging after being used for a long time, and the phenomenon that the battery leakage is caused due to the fact that the elasticity of the sealant 3 is weakened to cause the contact surface between the upper shell 2 and the lower shell 1 and the sealant 3 to generate a gap is avoided.
Wherein, the upper shell 2 and the lower shell 1 are made by at least one of stainless steel band, stainless iron band or cold-rolled steel band through punching, and the sealant 3 is composed of at least one of polypropylene, polyethylene and acrylonitrile-butadiene-styrene copolymer.
The joint of the flanging 12 and the side edge 11 of the lower shell is formed with a first arc structure. The radian of the turn-ups 12 that sets up of first circular arc structure at the turn-ups of casing side 11 down, further increases the clearance between turn-ups 12 and the casing side 11 down for can hold more sealed glues 3 between turn-ups 12 and casing side 11 down.
In order to increase the contact area between the sealant 3 and the lower shell 1 and improve the bonding strength between the sealant 3 and the lower shell 1, the maximum width of the sealant 3 is 1.5-5 times of the width of the flange 12.
In the present embodiment, the sealant 3 has a first connecting portion 31 abutting against the side 11 of the lower case and a second connecting portion 32 abutting against the flange 12, and the first connecting portion 31 extends to the bottom of the lower case 1 and abuts against the lower case 1. First connecting portion 31 with have between the second connecting portion 32 and be used for the installation turn-ups 12 with the installation position of casing side 11 down, through the installation position between first connecting portion 31 and the second connecting portion 32, will sealed glue 3 card under between casing side 11 and last casing side 21, avoid sealed glue 3 to break away from casing 1 down. Specifically, the inner side of the lower case side edge 11 and the turned edge 12 are completely wrapped inside the sealant 3 to enhance the adhesive strength between the sealant 3 and the lower case 1.
Specifically, go up casing 2 and have detain limit 22, detain limit 22 by go up casing side 21 and keep away from go up the top one end orientation of casing 2 the inboard bending of going up casing 2 forms, it sets up to detain limit 22 the below of turn-ups 12, it is close to detain limit 22 one side of turn-ups 12 with sealed 3 butts of glue. Set up the knot limit 22 in the one end of last casing side 21, play the fixed effect of support to sealed glue 3, after last casing 2 and lower casing 1 fixed connection, play through detaining limit 22 to casing 1 down and sealed glue 3 and carry on spacingly, prevent turn-ups 12 downstream and lead to casing 1 to break away from last casing 2 down. Because one side of the buckling edge 22 close to the flanging 12 is abutted against the sealant 3, the sealant 3 is firmly bonded between the upper shell 2 and the lower shell 1, and the battery leakage caused by the generation of gaps at the contact surfaces between the upper shell 2 and the lower shell 1 and the sealant 3 after the aging elasticity of the sealant 3 is weakened is prevented. Specifically, the buckling edge 22 has a second arc-shaped structure at the bending position of the upper shell side 21, the contact area between the sealant 3 and the buckling edge 22 is increased through the second arc-shaped structure, and the phenomenon of fracture due to excessive bending of the upper shell side 21 is prevented.
In a preferred embodiment, a first included angle is formed between the fastening edge 22 and the turned edge 12, and the first included angle is 0-90 °. The first included angle is set to be 0-90 degrees, so that the sealant 3 and the flanging 12 are limited above the buckling edge 22, and the sealant 3 is prevented from overflowing from the end part of the buckling edge 22.
In this embodiment, the vertical height of the flange 12 is 20% to 60% of the vertical height of the lower case 1. Through the design, the flanging 12 has a relatively proper vertical height, so that the flanging 12 can be packaged inside the side 21 of the upper shell, and the flanging 12 can be ensured to have enough extrusion stress, and the sealing effect is improved.
Wherein, the vertical height of the flanging 12 is 10-90% of the vertical height of the sealant 3. In order to ensure that the turnup 12 is completely wrapped by the sealant 3, the phenomenon of glue leakage is prevented.
In order to increase the bonding strength between the flange 12 and the sealant 3, the peripheral part of the flange 12 is provided with a thread structure, and the friction force of the flange 12 is increased through the thread structure, so that the bonding strength between the flange 12 and the sealant 3 is enhanced. Of course, in other embodiments, the periphery of the flange 12 may be provided with a plurality of protrusions spaced apart from each other to increase the friction of the flange 12.
The angle between the lower shell side 11 and the bottom of the lower shell 1 is 90-120 deg.. The angle between the side 11 of the lower shell and the bottom of the lower shell 1 is set to be 90-120 degrees, after the sealing of the battery is completed, the vertical extrusion stress and the horizontal extrusion stress of the sealant 3 are improved through the side 11 of the lower shell, and meanwhile, the volume of the inner cavity of the lower shell 1 is increased as much as possible.
In the present embodiment, a button cell is provided, which includes a sealing structure having the above-described structure. The button cell has the advantages of good sealing property, long service life, safety, reliability and low manufacturing cost.
In this embodiment, a manufacturing method of a sealing structure is provided, which includes the following steps:
step S100, providing a lower shell 1 and an upper shell 2, wherein the lower shell 1 is provided with a lower shell side 11, and the upper shell 2 is provided with an upper shell side 21;
step S200, turning over one end, far away from the bottom of the lower shell 1, of the lower shell side 11 of the lower shell 1 towards the outer side of the lower shell 1 to form a turned edge 12, and inclining the turned edge 12 from top to bottom to enable an included angle alpha between the turned edge 12 and the lower shell side 11 to be 10-60 degrees;
step S300, injecting sealant 3 between the side edge 11 of the lower shell and the side edge 21 of the upper shell, so that the flanging 12 is wrapped in the sealant 3;
step S400, covering the upper shell 2 on the periphery of the sealant 3, and extruding the upper shell 2 and the lower shell 1 to fixedly connect the upper shell and the lower shell;
step 500, bending one end of the side edge 21 of the upper shell away from the top of the upper shell 2 towards the inner side of the upper shell 2 to form a buckling edge 22, wherein one side of the buckling edge 22 close to the flanging 12 is abutted to the sealant 3. Specifically, the side of the buckle edge 22 close to the flange 12 abuts against the second connecting portion 32.
In the scheme, the flanging 12 is inclined from top to bottom to enable the included angle alpha between the flanging 12 and the side edge 11 of the lower shell to be 10-60 degrees, a containing space capable of containing the sealant 3 is formed between the flanging 12 and the side edge 11 of the lower shell, the flanging 12 in the traditional sealing structure is parallel to the side edge 11 of the lower shell or the flanging 12 and the side edge 11 of the lower shell are close to be parallel to each other, the containing amount of the sealant 3 between the flanging 12 and the side edge 11 of the lower shell is increased, so that under the condition that the overall size of the battery is not increased, more sealant 3 can be injected between the side edge 11 of the lower shell and the side edge 21 of the upper shell, the contact area between the sealant 3 and the flanging 12 and the side edge 11 of the lower shell is increased, the bonding force between the sealant 3 and the lower shell 1 is improved, the sealing effect inside the battery is ensured, and the leakage of the battery is effectively prevented, the safety performance of the battery is improved. And isBecause the included angle between the flanging 12 and the side edge 11 of the lower shell is present, the flanging 12 generates extrusion stress in the vertical direction and the horizontal direction at the same time, and the air permeability of the battery is ensured to be less than 10-9pa.m3And the sealant 3 is prevented from aging after being used for a long time, and the phenomenon that the battery leakage is caused due to the fact that the elasticity of the sealant 3 is weakened to cause the contact surface between the upper shell 2 and the lower shell 1 and the sealant 3 to generate a gap is avoided. One end bending type of last casing side 21 forms detains limit 22, carries out the butt through detaining limit 22 and sealed glue 3, carries out spacing and support sealed glue 3, thereby the restriction sealed glue 3 downstream carries on spacingly to turn-ups 12, prevents that casing 1 from taking off from last casing 2 down, guarantees the inside leakproofness of battery.
Preferably, in order to increase the friction force of the flange 12 and improve the adhesion between the flange 12 and the sealant 13, in step S200, a step S210 is further included, before the flange 12 is folded, a thread structure or a plurality of protrusions distributed at intervals are arranged on the periphery of one end of the side edge 11 of the lower shell away from the bottom of the lower shell 1.
In this embodiment, after the lower case 1 and the upper case 2 are pressed together, the upper case 2 and the lower case 1 are joined seamlessly, so as to ensure the sealing performance inside the battery. In order to ensure sealability between the upper case 2 and the lower case 1, a sealing layer is coated at the position of connection between the upper case 2 and the lower case 1.
It should be noted that the sealing structure of the present invention is not limited to sealing a battery, and the sealing structure may also seal an electronic device such as a capacitor.
In the description herein, it is to be understood that the terms "first" and "second" are used merely for descriptive purposes and are not to be construed as specifically limiting.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and the technical principles used, and any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the protective scope of the present invention.
Claims (9)
1. A sealing structure comprises a lower shell, an upper shell and a sealant, and is characterized in that the lower shell is provided with a lower shell side edge and a flanging, the flanging is formed by turning over one end of the side edge of the lower shell far away from the bottom of the lower shell towards the outer side of the lower shell, the flanging is obliquely arranged from top to bottom outwards, and the included angle between the flanging and the side edge of the lower shell is 10 degrees to 60 degrees, the upper shell is provided with an upper shell side edge, the upper shell is fixedly connected with the lower shell, the sealant is arranged between the side edge of the upper shell and the side edge of the lower shell, the upper casing is sealed and insulated with the lower casing, the upper casing is provided with a buckling edge, the buckling edge is far away from the side edge of the upper casing, one end of the top of the upper casing faces towards the inner side of the upper casing and is bent to form, and the buckling edge is close to one side of the flanging and abutted to the sealant.
2. The sealing structure of claim 1, wherein a first arc structure is formed at the joint of the flange and the lower housing side.
3. The sealing structure of claim 1, wherein the buckle edge is disposed below the cuff.
4. The sealing structure of claim 3, wherein a first included angle is formed between the buckle edge and the flanging, and the first included angle is 0-90 degrees.
5. The seal structure of claim 1, wherein the vertical height of the cuff is 20% -60% of the vertical height of the lower housing.
6. The sealing structure of claim 1, wherein the vertical height of the cuff is 10% -90% of the vertical height of the sealant.
7. The seal structure of claim 1, wherein an angle between the lower housing sides and the bottom of the lower housing is between 90 ° and 120 °.
8. A battery comprising the sealing structure according to any one of claims 1 to 7.
9. A method of manufacturing a seal structure, comprising the steps of:
step S100, providing a lower shell and an upper shell, wherein the lower shell is provided with a lower shell side edge, and the upper shell is provided with an upper shell side edge;
s200, turning over one end, far away from the bottom of the lower shell, of the side edge of the lower shell towards the outer side of the lower shell to form a turned edge, and inclining the turned edge from top to bottom to enable the included angle between the turned edge and the side edge of the lower shell to be 10-60 degrees;
step S300, injecting sealant between the side edge of the lower shell and the side edge of the upper shell, and enabling the flanging to be wrapped in the sealant;
s400, covering the upper shell on the periphery of the sealant, and extruding the upper shell and the lower shell to fixedly connect the upper shell and the lower shell;
and S500, bending one end of the side edge of the upper shell, which is far away from the top of the upper shell, towards the inner side of the upper shell to form a buckling edge, wherein one side of the buckling edge, which is close to the flanging, is abutted to the sealant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507797.2A CN108767144B (en) | 2018-05-24 | 2018-05-24 | Sealing structure, battery, and method for manufacturing sealing structure |
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| CN201810507797.2A CN108767144B (en) | 2018-05-24 | 2018-05-24 | Sealing structure, battery, and method for manufacturing sealing structure |
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| CN108767144A CN108767144A (en) | 2018-11-06 |
| CN108767144B true CN108767144B (en) | 2021-08-24 |
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| CN111261805B (en) * | 2020-01-19 | 2024-04-05 | 惠州市恒泰科技股份有限公司 | Button cell and preparation process thereof |
| CN111276646A (en) * | 2020-03-24 | 2020-06-12 | 珠海冠宇电池有限公司 | Shell structure, battery structure and electronic equipment |
| CN113078393B (en) * | 2021-03-29 | 2022-10-04 | 天津清研微能科技有限公司 | Sealing structure and sealing method of button lithium battery |
| CN113675511A (en) * | 2021-07-08 | 2021-11-19 | 惠州锂威新能源科技有限公司 | Shell structure, battery and packaging method thereof |
| CN115425341B (en) * | 2022-09-30 | 2024-06-04 | 路华置富电子(东莞)有限公司 | Winding type button cell with ruffle structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4941826A (en) * | 1972-08-31 | 1974-04-19 | ||
| JPS58176865A (en) * | 1982-04-12 | 1983-10-17 | Toshiba Corp | Alkaline battery |
| JPS61147453A (en) * | 1984-12-19 | 1986-07-05 | Matsushita Electric Ind Co Ltd | Enclosed type battery |
| CN1137177A (en) * | 1995-03-07 | 1996-12-04 | 松下电器产业株式会社 | Flat-type cell |
| CN203150622U (en) * | 2013-01-24 | 2013-08-21 | 东风汽车公司 | Automotive power battery pack shell sealing structure |
| CN206832307U (en) * | 2017-06-13 | 2018-01-02 | 上海飞奥燃气设备有限公司 | A kind of diaphragm gas meter seal structure for casing |
-
2018
- 2018-05-24 CN CN201810507797.2A patent/CN108767144B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4941826A (en) * | 1972-08-31 | 1974-04-19 | ||
| JPS58176865A (en) * | 1982-04-12 | 1983-10-17 | Toshiba Corp | Alkaline battery |
| JPS61147453A (en) * | 1984-12-19 | 1986-07-05 | Matsushita Electric Ind Co Ltd | Enclosed type battery |
| CN1137177A (en) * | 1995-03-07 | 1996-12-04 | 松下电器产业株式会社 | Flat-type cell |
| CN203150622U (en) * | 2013-01-24 | 2013-08-21 | 东风汽车公司 | Automotive power battery pack shell sealing structure |
| CN206832307U (en) * | 2017-06-13 | 2018-01-02 | 上海飞奥燃气设备有限公司 | A kind of diaphragm gas meter seal structure for casing |
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| CN108767144A (en) | 2018-11-06 |
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