CN219917341U - Battery shell and battery - Google Patents
Battery shell and battery Download PDFInfo
- Publication number
- CN219917341U CN219917341U CN202321540447.9U CN202321540447U CN219917341U CN 219917341 U CN219917341 U CN 219917341U CN 202321540447 U CN202321540447 U CN 202321540447U CN 219917341 U CN219917341 U CN 219917341U
- Authority
- CN
- China
- Prior art keywords
- battery
- battery protection
- protection film
- main
- shell
- 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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Links
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000005253 cladding Methods 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 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
- 239000007888 film coating Substances 0.000 description 4
- 238000009501 film coating Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a battery shell and a battery, wherein the battery shell comprises a square main shell and two battery protection films; the two battery protection films are distributed along the length direction of the main shell, and the two battery protection films are symmetrically coated on the large surfaces of the left side and the right side of the main shell; each battery protection film comprises a battery protection film main body part and at least one battery protection film extension part; two battery protection film main body parts which are respectively covered on the left side and the right side of the main shell; the battery protection film extending parts on the same side of the two battery protection films are oppositely bent and clung to the front side surface or the rear side surface of the main shell; the front side and/or the rear side of the main casing has a region not covered by the battery protection film. According to the utility model, the battery shell is symmetrically coated by the two-sided battery protection films, so that the problem of thickness and weight increase caused by overlapping coating can be effectively avoided, and the area which is not coated by the battery protection films is remained after coating, so that the whole weight of the battery core can be effectively reduced, and the energy density of the battery core can be improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery shell and a battery.
Background
The lithium ion battery has the advantages of high specific energy, multiple recycling times, long storage time and the like, is widely applied to portable electronic equipment (such as mobile phones, digital cameras and portable computers) and is widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirement on the lithium ion battery is higher and higher.
For square aluminum shell power batteries, coating the blue film is an important procedure in the production process, and as an insulating material, the blue film has the functions of insulation, water resistance, attractive appearance, wear resistance and the like.
At present, when the traditional blue film coating mode is adopted in the lithium ion battery industry, the blue film can be coated on the upper cover or the bottom and the side surface of the battery shell in an overlapping mode, the area of the overlapping coating is large, the overall thickness of the blue film coating is increased, the weight of the coated blue film is increased, the overall weight of the battery is improved, and the energy density of a battery cell is reduced.
Disclosure of Invention
The utility model aims at overcoming the technical defects existing in the prior art and provides a battery shell and a battery.
To this end, the present utility model provides a battery case including a square main case and a both-sided battery protection film;
the two battery protection films are distributed along the length direction of the main shell, and the two battery protection films are symmetrically coated on the large surfaces of the left side and the right side of the main shell;
wherein each battery protection film comprises a battery protection film main body part and at least one battery protection film extension part;
the battery protection film extension part is connected with the battery protection film main body part;
two battery protection film main body parts which are respectively covered on the left side and the right side of the main shell;
the battery protection film extending parts on the same side of the two battery protection films are oppositely bent and clung to the front side surface or the rear side surface of the main shell;
the front side and/or the rear side of the main casing has a region not covered by the battery protection film.
In addition, the utility model also provides a battery, which comprises the battery shell;
the battery cover plate arranged on the battery shell is provided with positive electrode posts and negative electrode posts at intervals;
a battery pole group is arranged in the main shell;
and the positive electrode lug and the negative electrode lug on the battery electrode group are respectively connected with the positive electrode post and the negative electrode post in a conductive manner.
Compared with the prior art, the battery shell and the battery are scientific in structural design, the battery shell is symmetrically coated by the battery protection films on two sides, the problem of thickness and weight increase caused by overlapping coating can be effectively avoided, the area which is not coated by the battery protection films is reserved after coating, the whole weight of the battery core can be effectively reduced, the energy density of the battery core is improved, and the battery shell and the battery have important practical significance.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a battery case according to the present utility model;
FIG. 2 is a schematic diagram of an embodiment of a blue film covered by a battery case according to the present utility model;
in the figure: 1 is a main shell, 2 is a battery protection film, and 3 is an area which is not covered by the battery protection film;
21 is a battery protection film main body, 22 is a battery protection film extension portion;
reference numeral 41 denotes a positive electrode post, and 42 denotes a negative electrode post.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 and 2, the present utility model provides a battery case including a square main case 1 and a two-sided battery protection film 2;
the two-sided battery protection films 2 are distributed along the length direction (namely the longitudinal direction) of the main shell 1, and the two are symmetrically coated on the large surfaces of the left side and the right side of the main shell 1;
wherein each battery protection film 2 includes one battery protection film main body portion 21 and at least one battery protection film extension portion 22, respectively;
the battery protection film extension 22 is connected to the battery protection film main body 21;
two battery protection film main body portions 21 respectively covering the left and right large surfaces of the main casing 1;
the battery protection film extension parts 22 positioned on the same side of the two battery protection films 2 are oppositely bent and clung to the front side surface or the rear side surface of the main shell 1;
the front side and/or the rear side of the main casing 1 has a region 3 not covered with a battery protection film.
Preferably, the area 3 not covered by the battery protection film may be covered with and adhered to the battery information label. Of course, the battery cell can be empty without sticking any parts, so that the whole weight of the battery cell can be reduced, and the energy density of the battery cell can be improved.
In the present utility model, the battery protection film 2 is a blue film.
In the present utility model, the battery protection film 2 is bonded to the main casing 1.
In the present utility model, the battery protection film extension 22 is integrally formed with the battery protection film main body 21.
In the present utility model, preferably, the area 3 not covered by the battery protection film is coated with a layer of structural adhesive;
the outer surface of the structural adhesive is level with the battery protection film 2 on the front side or the rear side of the main shell 1 where the structural adhesive is positioned;
preferably, the structural adhesive is applied to a thickness equal to the thickness of the battery protective film extension 22.
Preferably, the area 3 not covered by the battery protection film has a rectangular shape.
In the present utility model, two battery protection film extension parts 22 are provided on both front and rear sides of two battery protection film main body parts 21, respectively;
further, the overall shape of each battery protection film 2 is "i" shaped.
The sum of the areas of the four battery protection film extension portions 22 located on the front side or the rear side of the two battery protection film main body portions 21 is smaller than the area of the front side or the rear side of the main casing 1, so that the area 3 not covered with the battery protection film is formed.
Preferably, the two battery protection film extension parts 22 located at the front side or the rear side of the battery protection film main body part 21 are vertically symmetrically distributed.
Preferably, two battery protection film extension parts 22 are provided at upper and lower ends of both front and rear sides of the two battery protection film main body parts 21, respectively.
In the present utility model, the shape and size of the battery protection film main body 21 are matched with the shape and size of the left and right sides of the main case 1.
In the present utility model, the area of the battery protection film main body portion 21 is equal to the area of the left and right sides of the main casing 1.
In the present utility model, the longitudinal length of the battery protection film main body portion 21 is greater than or equal to the longitudinal length of the left or right side of the main casing 1;
the vertical height of the battery protection film main body portion 21 is greater than or equal to the vertical height of the main casing 1.
Further, the longitudinal length of the battery protection film main body portion 21 is smaller than the sum of the longitudinal length of the left or right side of the main casing 1 and the lateral width of the front or rear side of the main casing 1.
In the present utility model, the battery protection film extension 22 is rectangular in shape.
In the present utility model, a battery cover is provided in a sealed manner in one side opening (for example, top opening) of the main casing 1.
In the present utility model, the main casing 1 is an aluminum casing.
The region 3 of the main case 1 not covered by the battery protection film is an aluminum case region, and may be formulated according to actual covering requirements.
In the present utility model, when the battery protection film 2 is a blue film, the material of the blue film is PET (polyethylene terephthalate),
the width and thickness of the battery protection film are customized according to actual production requirements.
In the present utility model, the vertical height of the battery protection film 2 is greater than or equal to the vertical height of the main casing 1;
if the vertical height of the battery protection film 2 is greater than the vertical height of the main casing 1, the battery protection film main body 21 in the battery protection film 2 covers the top and bottom edges of the main casing 1.
Further, the battery protection film 2 has a longitudinal length ranging from: L-L+ 2*D
L is the longitudinal length of the main housing 1 and D is the transverse width of the main housing 1.
In particular, the battery protection film extension 22 extending from the two battery protection films 2 may have a partial area overlapping or non-overlapping coating, and the coating may be selected according to practical requirements.
In the utility model, the utility model also provides a battery, which comprises the battery shell;
a positive pole column 41 and a negative pole column 42 are arranged on a battery cover plate arranged on the battery shell at intervals;
a battery pole group is arranged in the main shell 1;
the positive electrode tab and the negative electrode tab on the battery electrode group are respectively connected with the positive electrode post 41 and the negative electrode post 42 in a conductive manner.
In particular implementation, the battery is a lithium ion battery.
Compared with the prior art, the battery shell and the battery provided by the utility model have the following beneficial effects:
1. the battery protection film adopts the I-shaped structure to coat the battery shell, uses symmetrical cladding, can effectively avoid overlapping the thickness increase problem that the cladding brought to when carrying out cladding operation, every battery protection film extension on the battery protection film can all be as the impetus or the impetus when cladding the operation, thereby be favorable to improving the work efficiency of cladding. Further, each battery protection film extension part on the battery protection film can be connected with a mechanical arm on the existing battery protection film coating machine (such as a blue film coating machine), so that the battery protection film can be coated by multiple mechanical arms at high speed, and the working efficiency is further improved;
2. after the I-shaped structural surface is coated, a rectangular aluminum leakage area exists on the side surface of the battery shell (namely, the area 3 is not coated by the battery protection film), so that the overall weight of the battery cell can be reduced, and the energy density of the battery cell can be improved.
3. The area 3 which is not covered by the battery protection film can be provided with structural adhesive, so that the thickness difference is compensated, the influence on the size of the battery is small, and the whole appearance is good.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. A battery case, characterized by comprising a square main case (1) and a two-sided battery protection film (2);
the two-sided battery protection films (2) are distributed along the length direction of the main shell (1) and symmetrically cover the large surfaces on the left side and the right side of the main shell (1);
wherein each battery protection film (2) comprises a battery protection film main body part (21) and at least one battery protection film extension part (22) respectively;
the battery protection film extension part (22) is connected with the battery protection film main body part (21);
two battery protection film main body parts (21) which are respectively covered on the left and right large surfaces of the main shell (1);
the battery protection film extension parts (22) positioned on the same side of the two battery protection films (2) are oppositely bent and are clung to the front side surface or the rear side surface of the main shell (1);
the front side and/or the rear side of the main case (1) has a region (3) which is not covered with a battery protection film.
2. The battery case according to claim 1, wherein the area (3) not covered by the battery protection film is covered with an adhesive battery information label.
3. The battery case according to claim 1, wherein the battery protection film extension portion (22) is integrally formed with the battery protection film main body portion (21).
4. The battery case according to claim 1, wherein the area (3) not covered by the battery protection film is coated with a layer of structural adhesive;
the outer surface of the structural adhesive is flush with the battery protection film (2) on the front side or the rear side of the main shell (1) where the structural adhesive is positioned.
5. The battery case according to claim 4, wherein the coating thickness of the structural adhesive is equal to the thickness of the battery protection film extension (22).
6. The battery case according to claim 1, wherein two battery protection film extension portions (22) are provided on both front and rear sides of the two battery protection film main body portions (21), respectively.
7. The battery case according to claim 6, wherein the overall shape of each battery protection film (2) is "i" shaped.
8. The battery case according to claim 6, wherein the sum of the areas of the four battery protection film extension portions (22) located at the front side or the rear side of the two battery protection film main body portions (21) is smaller than or equal to the area of the front side or the rear side of the main case (1).
9. The battery case according to claim 1, wherein a longitudinal length of the battery protection film main body portion (21) is greater than or equal to a longitudinal length of the left side or the right side of the main case (1);
and/or the vertical height of the battery protection film main body part (21) is greater than or equal to the vertical height of the main shell (1);
and/or the longitudinal length of the battery protection film main body part (21) is smaller than the sum of the longitudinal length of the left side or the right side of the main casing (1) and the transverse width of the front side or the rear side of the main casing (1);
and/or the battery protection film extension (22) is rectangular in shape;
and/or the longitudinal length range of the battery protection film (2) is: L-L+ 2*D
L is the longitudinal length of the main housing (1), and D is the transverse width of the main housing (1).
10. A battery comprising the battery case according to any one of claims 1 to 9;
a positive pole post (41) and a negative pole post (42) are arranged on a battery cover plate arranged on the battery shell at intervals;
a battery pole group is arranged in the main shell (1);
the positive electrode lug and the negative electrode lug on the battery electrode group are respectively connected with the positive electrode post (41) and the negative electrode post (42) in a conductive way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540447.9U CN219917341U (en) | 2023-06-15 | 2023-06-15 | Battery shell and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540447.9U CN219917341U (en) | 2023-06-15 | 2023-06-15 | Battery shell and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917341U true CN219917341U (en) | 2023-10-27 |
Family
ID=88468069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321540447.9U Active CN219917341U (en) | 2023-06-15 | 2023-06-15 | Battery shell and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219917341U (en) |
-
2023
- 2023-06-15 CN CN202321540447.9U patent/CN219917341U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |