CN210535776U - Laminated lithium ion battery - Google Patents
Laminated lithium ion battery Download PDFInfo
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- CN210535776U CN210535776U CN201921716134.8U CN201921716134U CN210535776U CN 210535776 U CN210535776 U CN 210535776U CN 201921716134 U CN201921716134 U CN 201921716134U CN 210535776 U CN210535776 U CN 210535776U
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- diaphragm
- positive plate
- battery
- plate
- lithium ion
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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
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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
- 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
Abstract
The utility model provides a lamination lithium ion battery, including electric core unit, positive plate and negative pole piece, insert the positive plate and arrange in proper order between electric core unit, form electric core combination after arranging, the outer winding of electric core combination is equipped with the diaphragm, and the number of coils ≧ 1. The battery cell unit is made by diaphragm winding positive plate and negative plate in proper order, and battery cell unit from the top down arranges in order diaphragm, negative plate, diaphragm, positive plate, diaphragm, negative plate, diaphragm … …, and wherein the number of positive plate is ≧ 1, and the number of negative plate is ≧ 2. The utility model discloses the lithium cell can realize modular production mode, and operating method is simple, is favorable to improving laminated battery's production efficiency, reduces battery manufacturing cost.
Description
Technical Field
The utility model relates to a lithium ion battery field, concretely relates to lamination lithium ion battery.
Background
Compared with a high-energy-density lead-acid battery and a nickel-metal hydride battery, the lithium ion battery has the characteristics of high energy density, high discharge voltage, long service life, no memory effect, environmental friendliness and the like, and is rapidly developed in the fields of consumer electronics and power batteries in recent years.
The existing lithium ion battery has a winding structure and a laminated structure. The winding type battery has the advantages of simple process and easy operation, but as the circulation is carried out, the battery pole piece is easy to expand to cause the deformation of the battery, so that the attenuation of the battery is accelerated; the laminated lithium ion battery has relatively complex preparation process and low production efficiency. Chinese patent application publication No. CN 105576296A discloses a method for winding type laminated battery, which achieves the effect of lamination by winding, and has the disadvantages that when the number of battery pole pieces is large, the diaphragms at both sides of the battery are too thick, the battery width is increased, and the use of electrolyte is increased. Application publication No. CN105355962A describes a way of "Z" type lamination, which is to fix the pole piece by using adhesive tape or glue, and the disadvantage is that the production efficiency of the "Z" type lamination is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lamination lithium ion battery improves current battery lamination inefficiency, problem that manufacturing cost is high.
Realize the technical scheme of the utility model is that:
the utility model provides a lamination lithium ion battery, includes electric core unit, positive plate and negative pole piece, inserts the positive plate and arranges in proper order between electric core unit, forms electric core combination after arranging, and electric core combination is outer to be rolled up and is equipped with the diaphragm, and the number of turns of rolling is ≧ 1.
The battery cell unit is made by diaphragm winding positive plate and negative plate in proper order, and battery cell unit from the top down arranges in order diaphragm, negative plate, diaphragm, positive plate, diaphragm, negative plate, diaphragm … …, and wherein the number of positive plate is ≧ 1, and the number of negative plate is ≧ 2.
The arrangement order of the battery cell combination is battery cell unit, positive plate and battery cell unit … …, wherein the number of the battery cell unit is ≧ 2.
The width of the negative plate is 2-6mm wider than that of the positive plate, and the length of the negative plate is 2-8mm longer than that of the positive plate.
The width of the diaphragm is 2-8mm larger than the length of the negative plate.
The membrane is fixed with tape or glue.
The utility model has the advantages that: the utility model discloses the lithium cell can realize modular production mode, and operating method is simple, is favorable to improving laminated battery's production efficiency, reduces battery manufacturing cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a cell unit structure.
Fig. 3 is a schematic diagram of a cell combination structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1
The size 74X 144mm of the positive plate 2, the size 76X 146mm of the negative plate 3 and the width 149mm of the diaphragm 5 are selected. The positive plate 2, the negative plate 3 and the diaphragm 5 are coiled into the cell unit 1 by a coiling mode, in the cell unit 1, the positive plate 10 and the negative plate 11 are fixed by glue, and the cell unit 1 is as shown in fig. 2.
As shown in fig. 3, three cell units 1 and two positive plates 2 are stacked in sequence through the cell units 1, the positive plates 2, the cell units 1, the positive plates 2 and the cell units 1, so as to ensure that the error of the alignment degree of the tabs is less than 0.5 mm.
And winding the stacked battery cell units 1 and the positive plates 2 for one circle by using the diaphragms 5, and fixing the diaphragms 5 by using adhesive tapes. The battery shell is an aluminum plastic film. The winding results are shown in FIG. 1.
Example 2
The size 74X 144mm of the positive plate 2, the size 76X 146mm of the negative plate 3 and the width 149mm of the diaphragm 5 are selected. The positive plate 2, the negative plate 3 and the diaphragm 5 are coiled into a cell unit 1 by a coiling mode, in the cell unit 1, the positive plate 15 and the negative plate 16 are fixed by glue, and the cell unit is as shown in fig. 2.
Two battery cell units 1 and a positive plate 2 are stacked in sequence through the battery cell units 1, the positive plate 2 and the battery cell units 1, and the error of the alignment degree of the tabs is required to be less than 0.5 mm. And winding the stacked battery cell units and the positive plate for a circle by using a diaphragm, and fixing the diaphragm by using an adhesive tape. The battery shell is a steel shell. The winding result is shown in fig. 1.
Example 3
The size of the positive plate 157 x 204mm, the size of the negative plate 160 x 208mm and the width of the diaphragm 210mm are selected. The positive plate 2, the negative plate 3 and the diaphragm 5 are coiled into a cell unit by using a coiling mode, in the cell unit, the positive plate 8 and the negative plate 9 are fixed by using an adhesive tape, and the cell unit is as shown in fig. 2.
The four battery cell units 1 and the three positive plates 2 are stacked in sequence through the battery cell units 1, the positive plates 2 and the battery cell units 1 … …, and the error of the alignment degree of the tabs is required to be less than 0.5 mm. And winding the stacked battery cell units and the positive plate for one circle by using a diaphragm 5, and fixing the diaphragm by using glue. The battery shell is an aluminum shell. The winding effect is shown in fig. 1.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a lamination lithium ion battery, includes electric core unit (1), positive plate (2) and negative pole piece (3), its characterized in that: inserting positive plates (2) between the cell units (1) and sequentially arranging the positive plates to form a cell combination (4), wherein a diaphragm (5) is wound outside the cell combination (4); the battery cell unit (1) is made by diaphragm (5) with positive plate (2) and negative pole piece (3) coiling in proper order, and battery cell unit from the top down arranges in proper order for diaphragm (5), negative pole piece (3), diaphragm (5), positive plate (2), diaphragm (5), negative pole piece (3), diaphragm (5) … …, and wherein the number of positive plate ≧ 1, the number of negative pole piece ≧ 2.
2. The laminated lithium ion battery of claim 1, wherein: the arrangement sequence of the battery cell combination (4) is battery cell unit (1), positive plate (2) and battery cell unit (1) … …, wherein the number of the battery cell unit (1) is ≧ 2.
3. The laminated lithium ion battery of claim 1, wherein: the width of the negative plate (3) is 2-6mm wider than that of the positive plate (2), and the length of the negative plate is 2-8mm longer than that of the positive plate (2).
4. The laminated lithium ion battery of claim 1, wherein: the width of the diaphragm (5) is 2-8mm larger than the length of the negative plate (3).
5. The laminated lithium ion battery of claim 1, wherein: the membrane (5) is fixed by means of adhesive tape or glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921716134.8U CN210535776U (en) | 2019-10-14 | 2019-10-14 | Laminated lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921716134.8U CN210535776U (en) | 2019-10-14 | 2019-10-14 | Laminated lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
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| CN210535776U true CN210535776U (en) | 2020-05-15 |
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| CN201921716134.8U Active CN210535776U (en) | 2019-10-14 | 2019-10-14 | Laminated lithium ion battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243119A (en) * | 2021-11-24 | 2022-03-25 | 无锡先导智能装备股份有限公司 | Lamination method of battery cell |
| CN114552024A (en) * | 2022-01-28 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Lithium ion battery lamination structure and preparation thereof, battery core and preparation and application thereof |
-
2019
- 2019-10-14 CN CN201921716134.8U patent/CN210535776U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243119A (en) * | 2021-11-24 | 2022-03-25 | 无锡先导智能装备股份有限公司 | Lamination method of battery cell |
| CN114552024A (en) * | 2022-01-28 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Lithium ion battery lamination structure and preparation thereof, battery core and preparation and application thereof |
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