CN219658739U - Lithium ion laminated battery, prefabricated part, pole piece prefabricated part and electric equipment - Google Patents
Lithium ion laminated battery, prefabricated part, pole piece prefabricated part and electric equipment Download PDFInfo
- Publication number
- CN219658739U CN219658739U CN202320457548.3U CN202320457548U CN219658739U CN 219658739 U CN219658739 U CN 219658739U CN 202320457548 U CN202320457548 U CN 202320457548U CN 219658739 U CN219658739 U CN 219658739U
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- China
- Prior art keywords
- pole piece
- laminated battery
- lithium ion
- ion laminated
- prefabricated part
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 73
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 230000009977 dual effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 238000003466 welding Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000003475 lamination Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 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
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- Secondary Cells (AREA)
Abstract
The utility model provides a lithium ion laminated battery, a prefabricated part, a pole piece prefabricated part and electric equipment, and relates to the field of lithium ion batteries. The lithium ion laminated battery pole piece prefabricated part comprises a first pole piece and a second pole piece; the first pole piece and the second pole piece are connected through a lug connecting belt, and the first pole piece and the second pole piece are both positive pole pieces or both negative pole pieces. The lithium ion laminated battery prefabricated part comprises positive plate units and negative plate units, wherein the positive plate units and the negative plate units are alternately arranged, and isolation films are arranged between two adjacent positive plate units and negative plate units; the positive plate unit and the negative plate unit are lithium ion laminated battery pole piece prefabricated parts. The lithium ion laminated battery pole piece prefabricated part provided by the utility model can be cut into two electric cores according to the requirement, and can also be directly prepared into a double-electric-core battery with common lugs, so that the welding procedure is reduced, and the electric connection between the double electric cores is more compact, thereby improving the capacity of the battery.
Description
Technical Field
The utility model relates to the field of lithium ion batteries, in particular to a lithium ion laminated battery, a prefabricated member, a pole piece prefabricated member and electric equipment.
Background
Lithium ion batteries have prompted the development of microelectronics, which has become the power source of choice for portable electronic devices. They are favored in the portable electronic market compared to other rechargeable systems because they provide higher weight and volumetric energy densities. Lithium ion batteries also began to enter the electric automobile market and are widely used for power grid energy storage. Capacity, energy density, power, charge-discharge rate, cost, cycle life, safety, and environmental impact are some of the parameters that need to be considered in various applications using lithium ion batteries. The high demands of the market for capacity and energy density have led the industry to increasingly shift the focus of fabrication to laminated lithium ion batteries.
The laminated battery is a high-energy-density lithium battery applying a lamination process, and has the following problems in manufacturing: when the positive electrode plate or the negative electrode plate is manufactured, a process of directly cutting the whole electrode plate into a single piece is adopted, and then single battery cells are formed by superposition, so that the manufacturing efficiency is low; meanwhile, the welding process is necessary for the double-cell laminated battery, so that the compactness of the electric connection between the double cells is insufficient, and the capacity of the battery is reduced.
Disclosure of Invention
The utility model aims to provide a lithium ion laminated battery, a prefabricated part, a pole piece prefabricated part and electric equipment so as to solve the problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a lithium ion laminated battery pole piece prefabricated part comprises a first pole piece and a second pole piece;
the first pole piece and the second pole piece are connected through a lug connecting belt, and the first pole piece and the second pole piece are both positive pole pieces or both negative pole pieces.
Preferably, the first pole piece and the second pole piece are symmetrically arranged.
Preferably, the first pole piece and the second pole piece are respectively and independently long-strip-shaped, circular or triangular.
Preferably, the first pole piece and the second pole piece are identical in shape.
Preferably, the first pole piece and the second pole piece are rectangular with rounded corners.
Preferably, the length of the tab connection strap is not less than 3cm.
Preferably, the tab connection strap has a length ranging from 5cm to 15cm.
The utility model also provides a lithium ion laminated battery prefabricated part, which comprises positive plate units and negative plate units, wherein the positive plate units and the negative plate units are alternately arranged, and isolation films are arranged between two adjacent positive plate units and negative plate units;
the positive electrode plate unit and the negative electrode plate unit are prefabricated lithium ion laminated battery electrode plates, the first electrode plate and the second electrode plate in the positive electrode plate unit are positive electrode plates, and the first electrode plate and the second electrode plate in the negative electrode plate unit are negative electrode plates.
The utility model also provides a lithium ion laminated battery, which comprises the lithium ion laminated battery prefabricated member.
Preferably, the lithium ion laminated battery is a single cell or a double cell.
The utility model also provides electric equipment, which comprises the lithium ion laminated battery.
Compared with the prior art, the utility model has the beneficial effects that:
according to the lithium ion laminated battery pole piece prefabricated part, the first pole piece and the second pole piece are connected through the pole lug connecting belt, the pole lug connecting belt is used as a common pole lug of the two pole pieces, the two pole pieces can be cut into two battery cells according to requirements, the two battery cells can also be directly prepared into the common pole lug double battery cell, the welding procedure is reduced, and the electric connection between the double battery cells is tighter, so that the capacity of the battery is improved.
According to the lithium ion laminated battery prefabricated part, the battery prefabricated part of the double-pole piece can be obtained through the alternate arrangement of the lithium ion laminated battery pole piece prefabricated part and the isolating film, and the double-cell lithium ion laminated battery can be prepared by using the lithium ion laminated battery prefabricated part at the later stage according to the requirement or the single-cell lithium ion laminated battery can be prepared after slitting.
The lithium ion laminated battery provided by the utility model is simple to manufacture and good in electrical property.
The electric equipment provided by the utility model has good electrical performance and low cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope of the present utility model.
Fig. 1 is a schematic top view of a lithium-ion laminated battery pole piece preform provided in example 1;
fig. 2 is a front view schematically showing a lithium ion laminated battery pole piece prefabricated member provided in example 1.
Reference numerals:
10-prefabricating a pole piece of the lithium ion laminated battery; 101-pole pieces; 102-tab connection strap.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting 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", "axial", "radial", "circumferential", 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 device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
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.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. 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 the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Embodiments of the present utility model will be described in detail below with reference to specific examples, but it will be understood by those skilled in the art that the following examples are only for illustrating the present utility model and should not be construed as limiting the scope of the present utility model. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a lithium ion laminated battery pole piece preform 10, the lithium ion laminated battery pole piece preform 10 including two pole pieces 101; the two pole pieces 101 are respectively arranged at the left and right sides of the tab connection belt 102.
It will be appreciated that in the same lithium ion laminated battery pole piece preform 10, both pole pieces 101 are either both positive or both negative.
To facilitate the production of the lithium-ion laminated battery pole piece preform 10 using raw material processing and the preparation of the lithium-ion laminated battery preform and lithium-ion laminated battery using the lithium-ion laminated battery pole piece preform 10, in a preferred embodiment, two pole pieces 101 are symmetrically disposed on both sides of the tab connection strap 102.
Typically, the two pole pieces 101 have the same shape, and may be rectangular with rounded corners at 4 corners.
In other embodiments, the shapes of the two pole pieces 101 may also be different, and in this case, the lithium ion laminated battery pole piece prefabricated part 10 is generally cut at the middle position of the tab connection belt 102 in a subsequent manner, so as to prepare two different single-cell lithium ion laminated batteries.
In other embodiments, the shape of the two pole pieces 101 may also be circular or triangular, independently of each other.
It will be appreciated that the shape of the two pole pieces 101 may be set as desired.
In order to facilitate subsequent slitting and also to ensure a spacing between the two pole pieces 101, the tab connection strap 102 is typically no less than 3cm in length.
For example, it may be 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm or any other desired length.
The preparation method of the lithium ion laminated battery pole piece prefabricated part 10 is briefly described as follows:
the whole pole piece is arranged on the clamp, the laser cutting machine or the die cutting machine is adopted to divide the whole pole piece formed by coating according to the die cutting outline, two pole pieces 101 can be obtained by one-time manufacturing, and the working efficiency and the material utilization rate are improved. The two pole pieces 101 are connected by a tab connection strap 102.
Example 2
The embodiment provides a lithium ion laminated battery prefabricated part, which comprises positive plate units and negative plate units, wherein the positive plate units and the negative plate units are alternately arranged, and isolation films are arranged between two adjacent positive plate units and negative plate units;
the positive plate unit and the negative plate unit are the lithium ion laminated battery pole piece prefabricated parts provided in the embodiment 1, two pole pieces 101 in the positive plate unit are positive pole pieces, two pole pieces 101 in the negative plate unit are negative pole pieces, and the shapes of the positive plate unit and the negative plate unit are completely consistent.
The lithium-ion laminated battery pole piece prefabricated member 10 in the positive pole piece unit and the negative pole piece unit comprises two rounded rectangular pole pieces 101, wherein the two pole pieces 101 are connected through a pole lug connecting belt 102 and symmetrically arranged on two sides of the pole lug connecting belt 102, and the length of the pole lug connecting belt 102 is 5cm.
The separator may be a separator commonly used in lithium ion laminated batteries (e.g., a polyethylene separator, a polypropylene separator, and modified separators thereof), and the present utility model is not particularly limited.
Example 3
The present embodiment provides a lithium-ion laminated battery, which is a dual-cell lithium-ion laminated battery, and is manufactured using the lithium-ion laminated battery preform provided in embodiment 2.
Specifically, after the lithium ion laminated battery prefabricated member provided in example 2 is prepared, the subsequent working procedures of processing, packaging, testing and the like are performed according to the conventional lithium ion laminated battery technology.
Example 4
The present embodiment provides a lithium ion laminated battery, which is a single-cell lithium ion laminated battery, and is manufactured by using the lithium ion laminated battery prefabricated member provided in embodiment 2.
Specifically, after the lithium ion laminated battery prefabricated member provided in example 2 is prepared, the prefabricated member is cut along the middle position of the tab connection belt 102 to obtain two independent single-cell lithium ion laminated battery prefabricated members, and then the subsequent working procedures of processing, packaging, testing and the like are performed according to the conventional lithium ion laminated battery technology.
The lithium ion laminated battery provided by the utility model can be widely applied to various devices, such as electric vehicles, electronic watches, energy storage devices (such as charge pals and energy storage power stations) and the like, and is particularly suitable for electric vehicles.
The electric equipment comprises equipment which comprises the lithium ion laminated battery provided by the utility model, and also comprises equipment for directly or indirectly supplying power, using electricity and storing electricity through the lithium ion laminated battery provided by the utility model.
According to the lithium ion laminated battery, the prefabricated part and the pole piece prefabricated part, the two pole pieces are connected through the common pole lug, and the two battery cores can be prepared through one lamination process, so that the lamination process is reduced, the waste of materials is reduced, and the production efficiency is improved. The battery core is prepared through the lamination of the co-electrode lug pole piece, can be cut into two battery cores according to the requirement, and can also be directly prepared into a double-battery-core battery with the co-electrode lug, so that the welding procedure is reduced, the electric connection between the double battery cores is more compact, and the resistance of the battery is reduced. Compared with the traditional lamination mode, the lamination machine disclosed by the utility model has the advantages that the processing cell quantity of the lamination machine in unit time is improved by about 26%, and the manufacturing cost of the cell is reduced by about 3%.
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.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. The lithium ion laminated battery pole piece prefabricated part is characterized by comprising a first pole piece and a second pole piece;
the first pole piece and the second pole piece are connected through a lug connecting belt, and the first pole piece and the second pole piece are both positive pole pieces or both negative pole pieces.
2. The lithium ion laminated battery pole piece preform of claim 1, wherein the first pole piece and the second pole piece are symmetrically disposed.
3. The lithium ion laminated battery pole piece preform of claim 1, wherein the first pole piece and the second pole piece are each independently elongated, circular, or triangular.
4. A lithium-ion laminated battery pole piece preform as in claim 3, wherein the first pole piece and the second pole piece are the same shape.
5. A lithium ion laminated battery pole piece preform as in claim 3, wherein the first pole piece and the second pole piece are each rectangular with rounded corners.
6. The lithium ion laminated battery pole piece preform of any of claims 1-5, wherein the tab connection strap is no less than 3cm in length.
7. The lithium ion laminated battery prefabricated part is characterized by comprising positive plate units and negative plate units, wherein the positive plate units and the negative plate units are alternately arranged, and isolation films are arranged between two adjacent positive plate units and negative plate units;
the positive electrode plate unit and the negative electrode plate unit are lithium ion laminated battery pole piece prefabricated parts according to any one of claims 1-6, the first pole piece and the second pole piece in the positive electrode plate unit are positive electrode plates, and the first pole piece and the second pole piece in the negative electrode plate unit are negative electrode plates.
8. A lithium-ion laminated battery comprising the lithium-ion laminated battery preform of claim 7.
9. The lithium-ion laminated battery of claim 8, wherein the lithium-ion laminated battery is a single cell or a dual cell.
10. A powered device comprising a lithium-ion laminated battery as defined in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320457548.3U CN219658739U (en) | 2023-03-10 | 2023-03-10 | Lithium ion laminated battery, prefabricated part, pole piece prefabricated part and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320457548.3U CN219658739U (en) | 2023-03-10 | 2023-03-10 | Lithium ion laminated battery, prefabricated part, pole piece prefabricated part and electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658739U true CN219658739U (en) | 2023-09-08 |
Family
ID=87879501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320457548.3U Active CN219658739U (en) | 2023-03-10 | 2023-03-10 | Lithium ion laminated battery, prefabricated part, pole piece prefabricated part and electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658739U (en) |
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2023
- 2023-03-10 CN CN202320457548.3U patent/CN219658739U/en active Active
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