CN219801103U - Sealing structure of battery module - Google Patents
Sealing structure of battery module Download PDFInfo
- Publication number
- CN219801103U CN219801103U CN202320647164.8U CN202320647164U CN219801103U CN 219801103 U CN219801103 U CN 219801103U CN 202320647164 U CN202320647164 U CN 202320647164U CN 219801103 U CN219801103 U CN 219801103U
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- Prior art keywords
- gasket
- opening
- battery module
- heat
- sealing structure
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- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 239000000565 sealant Substances 0.000 claims abstract description 28
- 229920006300 shrink film Polymers 0.000 claims abstract description 17
- 229920006257 Heat-shrinkable film Polymers 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Primary Cells (AREA)
Abstract
The utility model discloses a sealing structure of a battery module, which comprises the following components: the shell is provided with a wire outlet end and a sealing end which are opposite to each other, and the wire outlet end is provided with a wire outlet; the heat-shrinkable film is coated outside the shell, and two ends of the heat-shrinkable film are respectively provided with a first opening and a second opening; a first gasket disposed at one end of the heat shrink film and covering the second opening; the second gasket is arranged at one end of the heat shrinkage film far away from the first gasket, a third opening is arranged on the second gasket, and the third opening, the first opening and the wire outlet are communicated. According to the utility model, the first gasket and the second gasket are respectively additionally arranged at the two ends of the heat-shrinkable film to replace the original scheme of filling a large amount of sealant at the end parts, so that the problem that the installation of the battery module is affected due to the fact that the formation of the battery module is not regular due to the fact that a large amount of sealant is filled is solved.
Description
Technical Field
The utility model relates to the technical field of battery modules, in particular to a sealing structure of a battery module.
Background
The battery module is formed by connecting a plurality of battery cells, is installed and fixed through a shell, and is further coated with a heat shrinkage film outside the shell, so that good tightness of the battery module is achieved, and the purposes of water resistance and dust resistance are achieved.
Firstly, winding a heat shrinkage film outside a shell, and then heating the heat shrinkage film to shrink the heat shrinkage film and tightly cover the shell; in the thermal shrinkage process of the thermal shrinkage film, a plurality of folds can be generated at the end part of the thermal shrinkage film, and after the folds are cut off, an opening can be formed at the end part of the thermal shrinkage film, and the tightness of the battery module can be reduced.
In the existing scheme, a large amount of sealant is generally sprayed on the opening to seal the opening, so that a better sealing effect is achieved. However, after a large amount of sealant is sprayed on the end part, the sealant protrudes out of the end part of the battery module, so that the external shape of the battery module is not regular any more, and the installation of the battery module is not facilitated; meanwhile, in the process of filling the sealant, the sealant is easy to adhere to the side surface of the heat shrinkage film and the like at the positions where the sealant is not required to be sprayed, the heat shrinkage film is very easy to tear during cleaning, and the heat shrinkage film is very difficult to clean.
Disclosure of Invention
The utility model aims to solve the technical problems of the prior art, such as irregular shape of the battery module caused by the fact that the sealant protrudes out of the end of the battery module in the prior art.
The utility model solves the technical problems and adopts the technical proposal that the sealing structure of the battery module comprises:
the battery pack comprises a shell, a plurality of battery cells and a plurality of battery modules, wherein the shell is internally provided with a containing cavity for containing the battery cells, the containing cavity is provided with an outlet end and a sealing end which are opposite to each other, and the outlet end is provided with an outlet;
the heat-shrinkable film is coated outside the shell, and two ends of the heat-shrinkable film are respectively provided with a first opening and a second opening;
a first liner disposed at one end of the heat shrink film and covering the second opening;
the second gasket is arranged at one end of the heat shrinkage film far away from the first gasket, a third opening is arranged on the second gasket, and the third opening, the first opening and the outlet are communicated.
Further, the first gasket and the second gasket both comprise a main connecting plate and a plurality of side connecting plates, the main connecting plate is connected with the end part of the heat-shrinkable film, and the side connecting plates are connected with the side surfaces of the heat-shrinkable film.
Further, the shell is provided with three first side surfaces and one second side surface, each first side surface is provided with a first side plate, and the three first side plates surround to form a half-surrounded accommodating cavity.
Further, the first gasket and the second gasket each include two first side connection plates and one second side connection plate, the first side connection plates being on a first side, and the second side connection plates being on a second side.
Further, a plurality of mounting holes for mounting the battery cells are formed in the first side plate, and the heat shrinkage film covers the mounting holes.
Further, an annular gasket is further arranged at the outer end of the second gasket, and electrode connecting wires of the battery module sequentially penetrate through the wire outlet, the first opening, the third opening and the annular gasket.
Further, the inner ring of the annular gasket is filled with sealant to seal the outlet.
Compared with the prior art, the utility model has at least the following beneficial effects:
(1) The first gasket and the second gasket are respectively additionally arranged at two ends of the heat shrinkage film, the first gasket can cover the second opening of the sealing end, the first gasket can cover the wire outlet end, and only the wire outlet is reserved for the electrode connecting wire to pass through, so that a good sealing effect is achieved. Therefore, the original scheme of filling a large amount of sealant at the end part is replaced, and the problem that the installation of the battery module is affected due to the fact that the formation of the battery module is not regular due to the fact that a large amount of sealant is filled is solved.
(2) The annular gasket is arranged, the inner ring of the annular gasket is filled with sealant, so that the sealant seals the outlet, the sealant can be restrained at the inner ring of the annular gasket while a good sealing effect is achieved, the sealant is prevented from flowing to other positions, the problem that the sealant is easily adhered to the side surface of the heat shrinkage film and the like and does not need to be glued is solved, and the heat shrinkage film is torn during cleaning.
Drawings
Fig. 1 is a schematic view of a battery module according to an embodiment;
fig. 2 is an exploded view of the battery module according to the embodiment;
FIG. 3 is a schematic view of the heat shrink film in the embodiment;
FIG. 4 is a schematic view of the structure of the housing, the first gasket, the second gasket, and the annular gasket according to the embodiment;
FIG. 5 is a schematic view of the structure of the housing in the embodiment;
FIG. 6 is a schematic diagram of a second gasket according to an embodiment;
in the figure:
100. a housing; 101. a wire outlet end; 102. sealing the end; 103. a wire outlet; 110. an electrode connecting wire; 120. a battery cell;
200. a heat shrinkage film;
300. a first gasket;
400. a second gasket; 410. a main connecting plate; 411. a third opening; 420. a first side connection plate; 430. a second side connection plate;
500. an annular gasket.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
Referring to fig. 1-6, the present utility model discloses a sealing structure of a battery module, comprising:
a housing 100, wherein a containing cavity for containing a plurality of battery cells 120 is arranged in the housing 100, the housing has a wire outlet end 101 and a sealing end 102 which are opposite to each other, and the wire outlet end 101 is provided with a wire outlet 103;
a heat shrink film 200 wrapping the casing 100, wherein both ends of the heat shrink film 200 are respectively provided with a first opening and a second opening;
a first gasket 300 disposed at one end of the heat shrink film 200 and covering the second opening;
and a second gasket 400 disposed at an end of the heat shrink film 200 away from the first gasket 300, wherein a third opening 411 is disposed on the second gasket 400, and the third opening 411, the first opening and the outlet 103 are communicated.
Specifically, in the present utility model, the first gasket 300 and the second gasket 400 are respectively added at two ends of the heat shrink film 200, the first gasket 300 can cover the second opening of the sealing end 102, the first gasket 300 can cover the wire outlet end 101, and only the wire outlet 103 is left to pass through the electrode connecting wire 110, so as to achieve a better sealing effect. Therefore, the original scheme of filling a large amount of sealant at the end part is replaced, and the problem that the installation of the battery module is affected due to the fact that the formation of the battery module is not regular due to the fact that a large amount of sealant is filled is solved.
Further, the first gasket 300 and the second gasket 400 each include a main connection plate 410 and a plurality of side connection plates, wherein the main connection plate 410 is connected to an end of the heat shrink film 200, and the side connection plates are connected to side surfaces of the heat shrink film 200.
The first gasket 300 and the second gasket 400 are each provided with a plurality of side connection plates contacting the side surfaces of the heat shrink film 200, which can lengthen the path of water or dust from the outside into the inside of the case 100 from the first opening and the second opening, and enhance the sealing strength between the first gasket 300 and the heat shrink film 200.
Further, the housing 100 has three first side surfaces and one second side surface, each of the first side surfaces is provided with a first side plate, and the three first side plates surround to form a half-enclosed accommodating cavity.
Further, the first gasket 300 and the second gasket 400 each include two first side connection plates 420 and one second side connection plate 430, the first side connection plates 420 being on a first side, and the second side connection plates 430 being on a second side.
Since the second side is not provided with the side plate, the heat shrinkable film 200 is only used for coating, and if the heat shrinkable film 200 is directly heated, the junction between the side and the end is easily torn due to excessive shrinkage. Therefore, the second side connection plate 430 is disposed on the second side and is connected to the heat-shrinkable film 200, so that the second side connection plate 430 can support the heat-shrinkable film 200, and the phenomenon that the edge of the heat-shrinkable film 200 is too contracted due to no support, and finally the heat-shrinkable film is damaged is prevented.
Further, the first side plate is provided with a plurality of mounting holes for mounting the battery cells 120, and the heat shrink film 200 covers the mounting holes.
Further, an annular gasket 500 is further provided at the outer end of the second gasket 400, and the electrode connection lines 110 of the battery module sequentially pass through the outlet 103, the first opening, the third opening 411, and the annular gasket 500.
Further, a sealant is filled in the inner ring of the annular gasket 500 to seal the outlet 103.
Specifically, the annular gasket 500 is arranged, and the inner ring of the annular gasket 500 is filled with sealant, so that the sealant seals the outlet 103, the sealant can be restrained at the inner ring of the annular gasket 500 while a good sealing effect is achieved, the sealant is prevented from flowing to other positions, the problem that the sealant is easily adhered to the side surface of the heat shrinkage film 200 and the like where the sealant is not required to be broken is solved, and the heat shrinkage film 200 is torn during cleaning.
The specific implementation steps and principles of this embodiment are as follows: first, a plurality of battery cells 120 are mounted in a case 100; then, the heat shrinkage film 200 is wound outside the shell 100 and heated, so that the heat shrinkage film 200 shrinks and is coated on the shell 100; trimming the folded positions of the heat shrink film 200, and installing the first and second gaskets 300 and 400; finally, the annular gasket 500 is installed, and a small amount of sealant is filled inside the annular gasket 500.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Claims (7)
1. A sealing structure of a battery module, comprising:
the battery pack comprises a shell, a plurality of battery cells and a plurality of battery modules, wherein the shell is internally provided with a containing cavity for containing the battery cells, the containing cavity is provided with an outlet end and a sealing end which are opposite to each other, and the outlet end is provided with an outlet;
the heat-shrinkable film is coated outside the shell, and two ends of the heat-shrinkable film are respectively provided with a first opening and a second opening;
a first liner disposed at one end of the heat shrink film and covering the second opening;
the second gasket is arranged at one end of the heat shrinkage film far away from the first gasket, a third opening is arranged on the second gasket, and the third opening, the first opening and the outlet are communicated.
2. The sealing structure of a battery module according to claim 1, wherein the first gasket and the second gasket each comprise a main connecting plate and a plurality of side connecting plates, the main connecting plates are connected with the ends of the heat shrink film, and the side connecting plates are connected with the sides of the heat shrink film.
3. The sealing structure of a battery module according to claim 2, wherein the housing has three first side surfaces and one second side surface, a first side plate is provided on each of the first side surfaces, and the three first side plates surround to form a half-enclosed accommodating cavity.
4. The sealing structure of a battery module according to claim 3, wherein the first gasket and the second gasket each comprise two first side connection plates and one second side connection plate, the first side connection plates being on a first side, and the second side connection plates being on a second side.
5. The sealing structure of a battery module according to claim 3, wherein the first side plate is provided with a plurality of mounting holes for mounting the battery cells, and the heat shrinkage film covers the mounting holes.
6. The sealing structure of a battery module according to claim 2, wherein an annular gasket is further provided at an outer end of the second gasket, and electrode connecting wires of the battery module sequentially pass through the outlet, the first opening, the third opening and the annular gasket.
7. The sealing structure of a battery module according to claim 6, wherein a sealant is filled in an inner ring of the annular gasket to seal the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320647164.8U CN219801103U (en) | 2023-03-23 | 2023-03-23 | Sealing structure of battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320647164.8U CN219801103U (en) | 2023-03-23 | 2023-03-23 | Sealing structure of battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219801103U true CN219801103U (en) | 2023-10-03 |
Family
ID=88154990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320647164.8U Active CN219801103U (en) | 2023-03-23 | 2023-03-23 | Sealing structure of battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219801103U (en) |
-
2023
- 2023-03-23 CN CN202320647164.8U patent/CN219801103U/en active Active
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