CN220400665U - Soft package lithium ion battery cell structure and battery package thereof - Google Patents
Soft package lithium ion battery cell structure and battery package thereof Download PDFInfo
- Publication number
- CN220400665U CN220400665U CN202321848021.XU CN202321848021U CN220400665U CN 220400665 U CN220400665 U CN 220400665U CN 202321848021 U CN202321848021 U CN 202321848021U CN 220400665 U CN220400665 U CN 220400665U
- Authority
- CN
- China
- Prior art keywords
- battery cell
- lithium ion
- battery
- negative electrode
- positive electrode
- 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
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 28
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000002985 plastic film Substances 0.000 claims abstract description 22
- 229920006255 plastic film Polymers 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 210000004027 cell Anatomy 0.000 claims description 70
- 238000005096 rolling process Methods 0.000 claims description 3
- 210000005056 cell body Anatomy 0.000 claims 1
- 238000007872 degassing Methods 0.000 abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009517 secondary packaging Methods 0.000 description 1
Classifications
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model belongs to the technical field of lithium battery processing, and relates to a soft package lithium ion battery cell structure and a battery package thereof, wherein a plurality of lithium ion battery cells are integrated into the battery package, and the lithium ion battery cell comprises: the battery cell comprises a battery cell main body matched with a shell, a battery cell positive electrode lug connected with a positive electrode plate and a battery cell negative electrode lug connected with a negative electrode plate, wherein a diaphragm is arranged between the positive electrode and the negative electrode, the positive electrode, the diaphragm and the negative electrode plate form a winding or laminating structure, an air bag used for sealing is arranged on one side of the battery cell main body, a top sealing area with a flat surface is arranged on the upper part of the battery cell main body, an aluminum plastic film is tightly wrapped on the outer surface of the battery cell main body and the outer surface of the top sealing area, and the battery cell positive electrode lug, the battery cell negative electrode lug and the diaphragm are sealed and packaged in the top sealing area. The good degassing effect is obtained, the flatness of the top sealing area is good, and the performance of the battery cell is excellent.
Description
Technical Field
The utility model belongs to the technical field of lithium battery processing, and particularly relates to a soft package lithium ion battery cell structure and a battery package thereof.
Background
Along with the product cooperation of power battery and electric automobile is more and more deep, power battery needs to optimize more and just can adapt to more motorcycle types and application scene, has appeared an obvious trend and has become big for power battery size, no matter be cylinder, square aluminum hull or soft package, all is in the bigger direction development. The soft package power battery cell is still developed in the direction of a larger soft package technical route from a module suitable for VDA to an MEB590 module, such as 400-800 mm in the length direction, 150-300 mm in the width direction and 8-20 mm in the thickness direction. On the other hand, the size of the soft package power battery cell is flexible, and when the CTP design mode is imported, the battery cell is directly placed into the battery package CTP design, so that a module link is omitted, and the volume utilization rate of the system can be greatly improved.
The soft package power battery cell possibly appears because of the circumstances of remaining trace gas at sealed two degassing links, causes the battery cell surface skinning, if the electrolyte that the clamp carried out exceeds the requirement when gaseous exhaust in the degassing process, then the pole piece infiltration can not guarantee, and influences the electrochemical performance of battery cell. Therefore, improvements in the soft pack power cell structure are needed.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a soft package lithium ion battery cell structure and a battery package thereof, which have better degassing effect, are beneficial to improving the performance of the battery cell, have better electrical performance of a soft package power battery cell and improve the quality of a power battery product.
In order to solve the above problems, the present utility model provides a soft package lithium ion battery cell structure, in which a plurality of lithium ion battery cells are integrated into a battery package, the lithium ion battery cell comprising: the battery cell comprises a battery cell main body 1 matched with a shell, a battery cell positive electrode lug 2 connected with a positive electrode plate and a battery cell negative electrode lug 3 connected with a negative electrode plate, wherein a diaphragm is arranged between the positive electrode and the negative electrode, the positive electrode, the diaphragm and the negative electrode plate form a laminated structure, an air bag 5 used for sealing is arranged on one side of the battery cell main body 1, a top sealing area 4 with a flat surface is arranged on the upper part of the battery cell main body 1, an aluminum plastic film 7 tightly wraps the outer surface of the battery cell main body and the outer surface of the top sealing area 1, and the battery cell positive electrode lug, the battery cell negative electrode lug and the diaphragm are sealed and packaged in the top sealing area.
Optionally, the top seal area 1 is configured to be sealed by rolling.
Optionally, the thickness of the top sealing area 1 is smaller than the thickness of the main body of the battery cell.
Optionally, a doubling line 6 intersecting with the top sealing area is arranged on one side of the aluminum plastic film 7.
Optionally, a first aluminum-plastic film pit 71 is distributed on one side of a folding line of the aluminum-plastic film 7, and a second aluminum-plastic film pit 72 is distributed on the other side of the folding line.
Optionally, the shell is the space is placed to electric core main part that first plastic-aluminum membrane hole, second plastic-aluminum membrane hole fifty percent discount constitute.
The utility model also provides a soft package lithium ion battery package, which comprises a plurality of integrated battery cells.
Optionally, a plurality of the electric cells are included.
Compared with the prior art, the utility model has the beneficial effects that:
the flat top sealing area is beneficial to improving the performance of the battery cell, the soft package power battery cell has better electrical performance, and the quality of the power battery product is improved.
Drawings
Fig. 1 is a front view of a soft package lithium ion battery cell structure according to an embodiment of the utility model.
Fig. 2 is a side view of a soft pack lithium ion cell structure in accordance with an embodiment of the utility model.
Fig. 3 is a schematic diagram of an aluminum plastic film casing of a soft package lithium ion battery cell structure in an embodiment of the utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
Examples
As shown in fig. 1, the present utility model provides a soft package lithium ion battery cell structure, in which a plurality of lithium ion battery cells are integrated into a battery package, the lithium ion battery cell comprising: the battery cell comprises a battery cell main body 1 matched with a shell, a battery cell positive electrode lug 2 connected with a positive electrode plate and a battery cell negative electrode lug 3 connected with a negative electrode plate, wherein a diaphragm is arranged between the positive electrode and the negative electrode, the positive electrode, the diaphragm and the negative electrode plate form a laminated structure, an air bag 5 used for sealing is arranged on one side of the battery cell main body 1, a top sealing area 4 with a flat surface is arranged on the upper part of the battery cell main body 1, an aluminum plastic film 7 tightly wraps the outer surface of the battery cell main body and the outer surface of the top sealing area 1, and the battery cell positive electrode lug 2, the battery cell negative electrode lug 3 and the diaphragm are sealed and packaged in the top sealing area.
Optionally, the top seal area 1 is configured to be sealed by rolling.
Roller sets matched with the top sealing area are arranged on two sides of the top sealing area 4. As shown in fig. 2, the roller set 8 is an upper roller set arranged outside the top sealing area 4 and a lower roller set arranged on the other side.
Optionally, the thickness of the top sealing area 4 is smaller than the thickness of the main body of the battery cell.
Optionally, as shown in fig. 3, a doubling line 6 intersecting with the top sealing area is arranged on one side of the plastic-aluminum film 7.
Optionally, a first aluminum-plastic film pit 71 is distributed on one side of a folding line of the aluminum-plastic film 7, and a second aluminum-plastic film pit 72 is distributed on the other side of the folding line.
Optionally, the shell is the space is placed to electric core main part that first plastic-aluminum membrane hole, second plastic-aluminum membrane hole fifty percent discount constitute.
The utility model also provides a soft package lithium ion battery package, which comprises a plurality of integrated battery cells.
Optionally, a plurality of the electric cells are included.
Specific embodiments: and stamping a single aluminum plastic film pit or a double aluminum plastic film pit for assembling the power core on the aluminum plastic film by using a die. And after the battery cell is placed in the aluminum-plastic film pit, aligning the aluminum-plastic film along the alignment fold line, and performing top sealing of the battery cell tab and side sealing of other parts of the battery cell by using a top side sealing machine. And injecting liquid into the opening of the air bag, and pre-sealing the inside of the battery cell and the external environment. Then puncture the gas generated in the process of gas bag extraction and formation, and use the two sealing heads to carry out secondary packaging. And removing the air bag from the secondary packaged battery cell, and forming the soft package battery cell.
In the sealed vacuumizing process of the soft package power battery core, after the air bag is punctured to discharge the gas in the top sealing area, the soft package power battery core is sealed through the flat top sealing area, so that the leakage of the battery can be prevented. The battery cell performance is improved, the soft package power battery cell performance is better, and the quality of the power battery product is improved.
In the description of the present specification, reference to the term "in one embodiment," "in another embodiment," "exemplary," or "in a particular embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While the utility model has been described in detail in the foregoing general description, embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (8)
1. A soft package lithium ion cell structure, a plurality of lithium ion cells are integrated into the battery package, the lithium ion cell includes: the battery cell comprises a battery cell main body matched with a shell, a battery cell positive electrode lug connected with a positive electrode plate and a battery cell negative electrode lug connected with a negative electrode plate, wherein a diaphragm is arranged between the positive electrode and the negative electrode, and the positive electrode, the diaphragm and the negative electrode plate form a laminated structure.
2. The soft pack lithium ion cell structure of claim 1, wherein the top seal region is configured to be sealed by rolling.
3. The soft pack lithium ion cell structure of claim 1, wherein the top seal region thickness is less than the cell body thickness.
4. The soft package lithium ion battery cell structure of claim 3, wherein a pair of folding lines intersecting with the top sealing area are arranged on one side of the aluminum plastic film.
5. The soft package lithium ion battery cell structure of claim 4, wherein a first aluminum plastic film pit is distributed on one side of a doubling line of the aluminum plastic film, and a second aluminum plastic film pit is distributed on the other side of the doubling line.
6. The soft package lithium ion battery cell structure of claim 5, wherein the shell is a battery cell main body placement space formed by folding a first aluminum plastic film pit and a second aluminum plastic film pit.
7. A soft pack lithium ion battery pack comprising the cell of any one of claims 1-6.
8. The soft pack lithium ion battery pack of claim 7, comprising a plurality of the cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848021.XU CN220400665U (en) | 2023-07-13 | 2023-07-13 | Soft package lithium ion battery cell structure and battery package thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848021.XU CN220400665U (en) | 2023-07-13 | 2023-07-13 | Soft package lithium ion battery cell structure and battery package thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220400665U true CN220400665U (en) | 2024-01-26 |
Family
ID=89598828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321848021.XU Active CN220400665U (en) | 2023-07-13 | 2023-07-13 | Soft package lithium ion battery cell structure and battery package thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220400665U (en) |
-
2023
- 2023-07-13 CN CN202321848021.XU patent/CN220400665U/en active Active
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| GR01 | Patent grant |