CN221102366U - Battery liquid injection hole sealing structure and battery - Google Patents
Battery liquid injection hole sealing structure and battery Download PDFInfo
- Publication number
- CN221102366U CN221102366U CN202322335461.1U CN202322335461U CN221102366U CN 221102366 U CN221102366 U CN 221102366U CN 202322335461 U CN202322335461 U CN 202322335461U CN 221102366 U CN221102366 U CN 221102366U
- Authority
- CN
- China
- Prior art keywords
- sealing
- injection hole
- liquid injection
- battery
- sealing structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 123
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 238000002347 injection Methods 0.000 title claims abstract description 67
- 239000007924 injection Substances 0.000 title claims abstract description 67
- 230000004044 response Effects 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000003466 welding Methods 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007907 direct compression Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model provides a battery liquid injection hole sealing structure and a battery, wherein a sealing structure main body comprises a cover part and a sealing part connected with the cover part; an inner groove is formed in the end face of the bottom end of the cover part and/or the outer wall of the sealing part, and a sealing piece in sealing fit with the battery liquid injection hole is arranged in the inner groove; the outer wall of the sealing part is embedded with a bulge, and in response to the assembly into the battery liquid injection hole, the top end of the bulge is propped against the bottom end face of the liquid injection hole. According to the battery liquid injection hole sealing structure and the battery, the form of direct compression sealing with the liquid injection hole is adopted, welding is omitted, multiple compression sealing is carried out on the liquid injection hole by using the sealing piece and the protruding part which are arranged on the main body, and through field testing and actual application, the production efficiency can be greatly improved, the manufacturing cost is reduced, and meanwhile, the product qualification rate and the service life of the battery are effectively improved.
Description
Technical Field
The utility model belongs to the technical field of battery manufacturing, and particularly relates to a battery liquid injection hole sealing structure and a battery.
Background
The traditional battery liquid injection holes and sealing nails are mostly in a laser welding mode, so that the equipment investment cost is high, the production and manufacturing cost is high, the efficiency is low, the welding quality cannot be ensured, and the liquid leakage condition is generated; along with the updating iteration of battery products, the battery liquid injection hole and the sealing nail are sealed by adopting a steel ball, but the steel ball can enlarge the hole diameter of the liquid injection hole in the process of embedding the steel ball into the liquid injection hole, so that the sealing is not tight, and the liquid leakage condition is also very serious.
Disclosure of utility model
In view of the above, the present utility model aims to provide a sealing structure for a liquid injection hole of a battery and a battery, so as to solve the problem that the sealing is not tight and even causes liquid leakage in the sealing process of the liquid injection hole of the battery and a sealing nail.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
In a first aspect, the present utility model provides a sealing structure for a liquid injection hole of a battery, where a sealing structure body includes a cover portion and a sealing portion connected to the cover portion;
An inner groove is formed in the end face of the bottom end of the cover part and/or the outer wall of the sealing part, and a sealing piece in sealing fit with the battery liquid injection hole is arranged in the inner groove;
the outer wall of the sealing part is embedded with a bulge, and in response to the assembly into the battery liquid injection hole, the top end of the bulge abuts against the bottom end face of the liquid injection hole.
Further, the cover part and the sealing part are integrally formed;
the cover part is of a conical structure, and is in interference fit with the inlet of the liquid injection hole;
the sealing part is of a cylindrical structure and is inserted into the liquid injection hole.
Further, an annular inner groove which is concave inwards is formed in the end face of the bottom end of the covering part; and/or;
An annular inner groove which is concave inwards is formed in the outer wall of the sealing part;
the seal is mounted into the annular inner groove.
Further, the protrusion comprises a plurality of hemispherical protrusions or strip-shaped protrusions arranged around the sealing part;
the hemispherical bulges or the strip-shaped bulges are distributed at intervals.
Further, a slot is formed in the top end face of the cover portion.
Further, the sealing element is an annular rubber sealing ring.
In a second aspect, based on the same inventive concept, the utility model also provides a battery, which comprises a cover plate and the battery liquid injection hole sealing structure according to the first aspect.
Compared with the prior art, the battery liquid injection hole sealing structure and the battery have the following beneficial effects:
The battery liquid injection hole sealing structure and the battery adopt a form of directly compacting and sealing with the liquid injection hole, welding is omitted, the sealing piece arranged on the main body and the bulge are utilized for carrying out multiple compacting and sealing on the liquid injection hole, and through field test and actual application, the production efficiency can be greatly improved, the manufacturing cost is reduced, and meanwhile, the product qualification rate and the service life of the battery are effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of a sealing structure of a liquid injection hole of a battery according to an embodiment of the utility model;
FIG. 2 is a cross-sectional view of a sealing structure of a liquid injection hole of a battery according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a sealing structure of a liquid injection hole of a battery according to another embodiment of the present utility model;
Fig. 4 is a schematic view of a liquid injection hole of a battery according to another embodiment of the utility model;
fig. 5 is a schematic structural view of a sealing structure of a battery liquid injection hole according to an embodiment of the present utility model installed in the battery liquid injection hole.
Reference numerals illustrate:
1-a covering part; 11-slotting; 2-sealing part; 3-an inner groove; 4-a boss; 5-seal.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
Referring to fig. 1 to 4, the present embodiment provides a sealing structure for a liquid injection hole of a battery, wherein a sealing structure main body includes a cover portion 1 and a sealing portion 2 connected to the cover portion 1;
An inner groove 3 is formed in the end face of the bottom end of the cover part 1 and/or the outer wall of the sealing part 2, and a sealing piece 5 in sealing fit with the battery liquid injection hole is arranged in the inner groove 3;
The outer wall of the sealing part 2 is embedded with a bulge, and in response to the assembly into the battery liquid injection hole, the top end of the bulge is propped against the bottom end face of the liquid injection hole.
Specifically, in this embodiment, the sealing structure body is in a T-shaped structure, and includes a cover portion 1 and a sealing portion 2, an annular inner groove 3 surrounding the sealing portion 2 is formed at the bottom end of the cover portion 1, and/or an annular inner groove 3 is formed at the outer wall of the sealing portion 2, for placing a sealing element 5 for sealing; secondly, with traditional lithium cell annotate liquid hole and adopt and beat the sealed form of steel ball different, this embodiment inlays protruding portion 4 through the outer wall at sealing portion 2, and the main effect is that it is installed the cooperation with annotating the liquid hole after, bellied top offsets with annotating the bottom terminal surface of liquid hole, can play fastening locking and compress tightly the sealing washer effect, and this sealed form can not cause annotating the liquid aperture to prop the sealed not tight that leads to, even the condition of weeping of big lead to.
The battery liquid injection hole sealing structure adopts a form of directly compacting and sealing with the liquid injection hole, welding is canceled, the liquid injection hole is subjected to multiple compacting and sealing by utilizing the sealing piece 5 and the bulge which are arranged on the main body, and the production efficiency can be greatly improved, the manufacturing cost is reduced, and meanwhile, the product qualification rate and the service life of the battery are effectively improved through field test and actual use.
In some embodiments, as shown in fig. 2, the covering portion 1 and the sealing portion 2 are integrally formed;
The cover part 1 is of a conical structure, and the cover part 1 is in interference fit with the inlet of the liquid injection hole;
The sealing part 2 is of a cylindrical structure, and the sealing part 2 is inserted into the liquid injection hole.
Specifically, since the entrance of the liquid injection hole is of a step-shaped structure, in order to realize that the sealing structure body is matched and sealed in the liquid injection hole, the sealing part 2 is of a cylindrical structure by arranging the cover part 1 into a conical structure, so that the sealing structure body can be conveniently embedded into the liquid injection hole.
It should be noted that, in this embodiment, the sealing structure main body adopts the structure of an anchor sealing nail, and the sealing structure main body may be made of aluminum, steel, stainless steel, copper, nickel or nickel plating, tin plating, etc.
In some embodiments, as shown in fig. 1 to 4, the bottom end surface of the covering portion 1 is provided with an annular inner groove 3 recessed inwards; and/or;
The outer wall of the sealing part 2 is provided with an annular inner groove 3 which is concave inwards;
The seal 5 fits into the annular inner groove 3.
Specifically, in the present embodiment, an implementation form is provided in which an annular inner groove 3 may be formed, and an annular inner groove 3 may be formed around the sealing portion 2 at the bottom end face of the lid portion 1, and the sealing member 5 may be assembled into the annular inner groove 3; an annular inner groove 3 can be formed on the circumference of the outer wall of the sealing part 2, and the sealing piece 5 can be assembled in the annular inner groove 3; the cover part 1 and the sealing part 2 can be provided with annular inner grooves 3 respectively, and two sealing pieces 5 are arranged in the annular inner grooves 3 simultaneously; the above three modes can realize the sealing effect on the liquid injection hole, and are not further described here.
In some embodiments, as shown in fig. 1 to 4, the protrusions comprise hemispherical protrusions or strip-shaped protrusions arranged around the sealing part 2;
The hemispherical bulges or the strip-shaped bulges are distributed at intervals.
Specifically, hemispherical protrusions or strip-shaped protrusions are uniformly distributed on the circumference of the bottom of the sealing part 2, the number of hemispherical protrusions or strip-shaped protrusions is 2, 3 and 6 are unequal, the hemispherical protrusions or strip-shaped protrusions arranged on the sealing part 2 can be in clamping fit with the inner edge of the liquid injection hole when the sealing structure main body is pressed, after the sealing structure main body is completely inserted into the liquid injection hole, the hemispherical protrusions or strip-shaped protrusions are utilized to fasten and prevent loosening of the liquid injection hole and press the sealing ring, so that the problems that the sealing hole diameter is enlarged, sealing is not tight and the liquid leakage condition is serious due to the fact that the sealing mode of steel ball beating is adopted in the prior art are solved.
It should be noted that, for the strip-shaped protrusion, the top end of the strip-shaped protrusion should be slightly inclined so as to avoid normal disassembly and assembly of the sealing structure main body, and the strip-shaped protrusion can be tightly clamped and matched with the inner edge of the liquid injection hole to achieve the sealing effect.
In some embodiments, the top end face of the covering portion 1 is provided with a slot 11.
Specifically, as shown in fig. 3 and 4, a slot 11 is formed in the top of the cover part 1, so that the sealing structure can be conveniently rotated for a certain angle after being driven into the liquid injection hole, and the functions of preventing looseness and preventing the sealing structure from falling off are achieved.
In some embodiments, the seal 5 is an annular rubber seal ring.
Specifically, the rubber sealing ring is in an O-shaped ring or flat gasket form, can be integrally injection molded with the sealing structure, can be assembled with the sealing structure after being independently processed and molded, is arranged on the annular groove at the back surface of the covering part 1 or the annular inner groove 3 at the circumference of the sealing part 2, and mainly acts as compression deformation of the rubber sealing ring under the combined action of the sealing structure and the liquid injection hole after being embedded into the liquid injection hole so as to ensure sealing and prevent electrolyte leakage.
Further, the rubber sealing ring material of the prime number of the embodiment can be rubber soft sealing materials such as high temperature resistant and corrosion resistant fluororubber, so as to improve the service life of the sealing ring.
Example two
As shown in fig. 5, based on the same inventive concept, this embodiment also provides a battery, including a cover plate and the sealing structure of the liquid injection hole of the battery.
After the battery is injected through the liquid injection hole, the sealing structure main body is pressed into the liquid injection hole by knocking force, then the sealing structure main body is slotted 11 in a straight line or a cross shape and rotated for a certain angle, clamping and sealing of the bulge of the sealing structure main body and the inner edge of the liquid injection hole are completed, and therefore the problem that the aperture is enlarged when steel balls are driven into the liquid injection hole is solved, and the suggested rotation angle is half of the bulge arrangement quantity angle. For example, 3 hemispherical protrusions are uniformly distributed on the sealing part 2, the spacing angle is 120 degrees, and the pressing-in rotation angle is 60 degrees.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (5)
1. Cell annotates liquid hole seal structure, its characterized in that:
The sealing structure main body comprises a cover part and a sealing part connected with the cover part;
the outer wall of the sealing part is embedded with a bulge, and in response to the assembly into the battery liquid injection hole, the top end of the bulge is propped against the bottom end surface of the liquid injection hole;
an annular inner groove which is concave inwards is formed in the end face of the bottom end of the cover part; and/or;
An annular inner groove which is concave inwards is formed in the outer wall of the sealing part;
a sealing piece in sealing fit with the battery liquid injection hole is arranged in the inner groove;
The sealing element is an annular rubber sealing ring;
the protrusion comprises a plurality of hemispherical protrusions or strip-shaped protrusions arranged around the sealing part.
2. The battery liquid injection hole sealing structure according to claim 1, wherein:
the cover part and the sealing part are integrally formed;
the cover part is of a conical structure, and is in interference fit with the inlet of the liquid injection hole;
the sealing part is of a cylindrical structure and is inserted into the liquid injection hole.
3. The battery liquid injection hole sealing structure according to claim 1, wherein:
the hemispherical bulges or the strip-shaped bulges are distributed at intervals.
4. The battery liquid injection hole sealing structure according to claim 1, wherein:
The top end face of the cover part is provided with a slot.
5. A battery, characterized in that: a battery fill port seal comprising a cover plate and a battery as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322335461.1U CN221102366U (en) | 2023-08-29 | 2023-08-29 | Battery liquid injection hole sealing structure and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322335461.1U CN221102366U (en) | 2023-08-29 | 2023-08-29 | Battery liquid injection hole sealing structure and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221102366U true CN221102366U (en) | 2024-06-07 |
Family
ID=91314715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322335461.1U Active CN221102366U (en) | 2023-08-29 | 2023-08-29 | Battery liquid injection hole sealing structure and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221102366U (en) |
-
2023
- 2023-08-29 CN CN202322335461.1U patent/CN221102366U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |