CN215342884U - Novel aluminum foil for lithium battery - Google Patents
Novel aluminum foil for lithium battery Download PDFInfo
- Publication number
- CN215342884U CN215342884U CN202121673609.7U CN202121673609U CN215342884U CN 215342884 U CN215342884 U CN 215342884U CN 202121673609 U CN202121673609 U CN 202121673609U CN 215342884 U CN215342884 U CN 215342884U
- Authority
- CN
- China
- Prior art keywords
- anode
- cathode
- aluminum foil
- sheets
- piece
- 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.)
- Expired - Fee Related
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 39
- 239000011888 foil Substances 0.000 title claims abstract description 39
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011889 copper foil Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000005030 aluminium foil Substances 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 229910000572 Lithium Nickel Cobalt Manganese Oxide (NCM) Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- FBDMTTNVIIVBKI-UHFFFAOYSA-N [O-2].[Mn+2].[Co+2].[Ni+2].[Li+] Chemical compound [O-2].[Mn+2].[Co+2].[Ni+2].[Li+] FBDMTTNVIIVBKI-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model discloses a novel aluminum foil for a lithium battery, and relates to the field of lithium batteries. This novel aluminium foil for lithium cell includes: the cathode comprises two anode aluminum foil sheets and two cathode copper foil sheets, wherein an anode end piece is arranged at the top of each anode aluminum foil sheet, a cathode end piece is arranged at the top of each cathode copper foil sheet, anode connecting sheets are arranged on the upper half parts of the outer walls of the two sides of each anode end piece, and cathode connecting sheets are arranged on the upper half parts of the outer walls of the two sides of each cathode end piece; the separator is arranged between two adjacent anode aluminum foils and cathode copper foils, and two sides of the separator are tightly attached to the anode aluminum foils and the cathode copper foils respectively. This novel aluminium foil for lithium cell, two positive pole end pieces pass through the laminating of positive connection piece, and two negative pole end pieces pass through the laminating of negative connection piece, and the tip of two positive pole end pieces levels, and the tip of two negative pole end pieces levels, can not appear the gap because of the bending.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a novel aluminum foil for a lithium battery.
Background
Lithium batteries generally have two shapes: cylindrical and square, the inside of the battery adopts a spiral winding structure, and the battery is formed by spacing a very fine and high-permeability polyethylene film isolating material between the positive electrode and the negative electrode. The positive electrode comprises a current collector consisting of lithium cobaltate (or lithium nickel cobalt manganese oxide, lithium manganate, lithium iron phosphate and the like) and an aluminum foil. The negative electrode is composed of a current collector composed of a graphitized carbon material and a copper foil.
The positive and negative poles of the square lithium battery are generally formed by stacking a plurality of positive pole pieces and a plurality of negative pole pieces, and a separator is arranged between each two adjacent positive pole pieces and each negative pole piece, so that when the ends of the two negative pole pieces are stacked, a distance between one positive pole piece and one separator exists, and when the ends of the two positive pole pieces are stacked, a distance between one negative pole piece and one separator exists, so that a certain gap exists, and the top end is not flat, therefore, the novel aluminum foil for the lithium battery is provided.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model discloses a novel aluminum foil for a lithium battery, which aims to solve the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme: a novel aluminum foil for a lithium battery includes:
the cathode comprises two anode aluminum foil sheets and two cathode copper foil sheets, wherein an anode end piece is arranged at the top of each anode aluminum foil sheet, a cathode end piece is arranged at the top of each cathode copper foil sheet, anode connecting sheets are arranged on the upper half parts of the outer walls of the two sides of each anode end piece, and cathode connecting sheets are arranged on the upper half parts of the outer walls of the two sides of each cathode end piece;
the separator is arranged between two adjacent anode aluminum foils and cathode copper foils, and two sides of the separator are tightly attached to the anode aluminum foils and the cathode copper foils respectively.
Preferably, the tops of the two positive electrode end pieces and the four positive electrode connecting pieces are fixedly connected with positive electrode contact pieces, and the tops of the two negative electrode end pieces and the four negative electrode connecting pieces are fixedly connected with negative electrode contact pieces.
Preferably, the outer surfaces of the positive electrode contact piece and the negative electrode contact piece are both subjected to gold plating.
Preferably, the lower half parts of the two positive electrode end pieces and the lower half parts of the two negative electrode end pieces are fixedly bonded with sealing rings.
Preferably, the outer surface of the positive aluminum foil and the outer surface of the negative copper foil are both sprayed with conductive coatings.
The utility model discloses a novel aluminum foil for a lithium battery, which has the following beneficial effects:
1. this novel aluminium foil for lithium cell, through the positive pole connection piece that the first half set up at positive pole end piece both sides outer wall, the negative pole connection piece that the first half of negative pole end piece both sides outer wall set up to make two positive pole end pieces pass through the laminating of positive pole connection piece, two negative pole end pieces pass through the laminating of negative pole connection piece, and the tip of two positive pole end pieces levels, and the tip of two negative pole end pieces levels, can not appear the gap because of the bending.
2. This novel aluminium foil for lithium cell through the gilding process to anodal contact piece and negative pole contact piece to prevent that anodal contact piece and negative pole contact piece from exposing the part in the external world and being oxidized, the condition of contact failure appears, through the conductive coating that sets up, can improve static electric conductive property, collect active material's micro current simultaneously, thereby can reduce the contact resistance between positive negative pole material and the current collector by a wide margin, and can improve the adhesive force between the two, and then can improve the wholeness ability of battery.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of the present invention;
fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.
In the figure: 1. a positive aluminum foil; 101. a positive terminal piece; 102. a positive electrode connecting sheet; 103. a positive electrode contact piece; 104. a seal ring; 105. a conductive coating; 2. a negative copper foil; 201. a negative end piece; 202. A negative electrode connecting sheet; 203. a negative contact piece; 3. a separator.
Detailed Description
The embodiment of the utility model discloses a novel aluminum foil for a lithium battery,
referring to fig. 1-3, comprising:
the two anode end pieces 101 are attached through the anode connecting pieces 102, the two cathode end pieces 201 are attached through the cathode connecting pieces 202, the end parts of the two anode end pieces 101 are flat, the end parts of the two cathode end pieces 201 are flat, and no gap is formed due to bending;
the separator 3 is arranged between two adjacent anode aluminum foil sheets 1 and cathode copper foil sheets 2, and two sides of the separator 3 are respectively tightly attached to the anode aluminum foil sheets 1 and the cathode copper foil sheets 2.
The tops of the two positive terminal pieces 101 and the four positive connecting pieces 102 are fixedly connected with a positive contact piece 103, and the tops of the two negative terminal pieces 201 and the four negative connecting pieces 202 are fixedly connected with a negative contact piece 203.
The outer surfaces of the positive contact piece 103 and the negative contact piece 203 are all subjected to gold plating treatment, and through the gold plating process of the positive contact piece 103 and the negative contact piece 203, the parts of the positive contact piece 103 and the negative contact piece 203 exposed to the outside are prevented from being oxidized, and poor contact is prevented.
The sealing rings 104 are fixedly bonded to the lower half portions of the two positive electrode end pieces 101 and the lower half portions of the two negative electrode end pieces 201, and the sealing rings 104 are arranged, so that an effective sealing effect can be achieved.
The outer surface of the anode aluminum foil 1 and the outer surface of the cathode copper foil 2 are both sprayed with the conductive coatings 105, static conductivity can be improved through the conductive coatings 105, and meanwhile, micro-current of active substances is collected, so that contact resistance between anode and cathode materials and a current collector can be greatly reduced, adhesion capacity between the anode and cathode materials and the current collector can be improved, and further the overall performance of the battery can be improved.
The number of the anode aluminum foil 1 and the cathode copper foil 2 arranged in the embodiment is set to be two, the number in the actual production process is not limited to two, the anode aluminum foil 1 and the cathode copper foil 2 can be arranged according to actual requirements, the anode aluminum foil 1 and the cathode copper foil 2 are connected in parallel, and therefore a faster reaction speed can be provided, and a larger current can be provided.
The working principle is as follows: in the processing process, the separator 3 is arranged between two adjacent anode aluminum foil sheets 1 and cathode copper foil sheets 2, and two sides of the separator 3 are respectively tightly attached to the anode aluminum foil sheets 1 and the cathode copper foil sheets 2, so that when two anode end sheets 101 are stacked, the distance between one cathode copper foil sheet 2 and one separator 3 exists, and when two cathode end sheets 201 are stacked, the distance between one anode aluminum foil sheet 1 and one separator 3 exists, and through the anode connecting sheets 102 arranged on the upper half parts of the outer walls on two sides of the anode end sheet 101 and the cathode connecting sheets 202 arranged on the upper half parts of the outer walls on two sides of the cathode end sheet 201, the two anode end sheets 101 are attached through the anode connecting sheets 102, the two cathode end sheets 201 are attached through the cathode connecting sheets 202, the end parts of the two anode end sheets 101 are flat, and the end parts of the two cathode end sheets 201 are flat, no gap is generated due to bending;
through the gold plating process to positive pole contact piece 103 and negative pole contact piece 203 to prevent that positive pole contact piece 103 and negative pole contact piece 203 from exposing the part in the external world and being oxidized, the condition that contact failure appears, through the conductive coating 105 that sets up, can improve static electric conductive property, collect the microcurrent of active material simultaneously, thereby can reduce the contact resistance between positive and negative pole material and the current collector by a wide margin, and can improve the adhesive capacity between the two, and then can improve the bulk property of battery.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A novel aluminum foil for a lithium battery is characterized by comprising:
the cathode comprises two anode aluminum foil sheets (1) and two cathode copper foil sheets (2), wherein an anode end piece (101) is arranged at the top of each anode aluminum foil sheet (1), a cathode end piece (201) is arranged at the top of each cathode copper foil sheet (2), anode connecting pieces (102) are arranged on the upper half parts of the outer walls of the two sides of each anode end piece (101), and cathode connecting pieces (202) are arranged on the upper half parts of the outer walls of the two sides of each cathode end piece (201);
the separator comprises two separators (3), wherein the separators (3) are arranged between two adjacent anode aluminum foil sheets (1) and cathode copper foil sheets (2), and two sides of each separator (3) are tightly attached to the anode aluminum foil sheets (1) and the cathode copper foil sheets (2) respectively.
2. The novel aluminum foil for a lithium battery as claimed in claim 1, wherein: the tops of the two positive electrode end pieces (101) and the four positive electrode connecting pieces (102) are fixedly connected with a positive electrode contact piece (103), and the tops of the two negative electrode end pieces (201) and the four negative electrode connecting pieces (202) are fixedly connected with a negative electrode contact piece (203).
3. The novel aluminum foil for a lithium battery as claimed in claim 2, wherein: the outer surfaces of the positive contact piece (103) and the negative contact piece (203) are all subjected to gold plating treatment.
4. The novel aluminum foil for a lithium battery as claimed in claim 1, wherein: and the lower half parts of the two positive electrode end pieces (101) and the lower half parts of the two negative electrode end pieces (201) are fixedly bonded with sealing rings (104).
5. The novel aluminum foil for a lithium battery as claimed in claim 1, wherein: and the outer surfaces of the anode aluminum foil (1) and the cathode copper foil (2) are both sprayed with conductive coatings (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121673609.7U CN215342884U (en) | 2021-07-22 | 2021-07-22 | Novel aluminum foil for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121673609.7U CN215342884U (en) | 2021-07-22 | 2021-07-22 | Novel aluminum foil for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215342884U true CN215342884U (en) | 2021-12-28 |
Family
ID=79569307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121673609.7U Expired - Fee Related CN215342884U (en) | 2021-07-22 | 2021-07-22 | Novel aluminum foil for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215342884U (en) |
-
2021
- 2021-07-22 CN CN202121673609.7U patent/CN215342884U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |