CN215220762U - Current collector and graphite anode bipolar lithium ion battery - Google Patents
Current collector and graphite anode bipolar lithium ion battery Download PDFInfo
- Publication number
- CN215220762U CN215220762U CN202120843466.3U CN202120843466U CN215220762U CN 215220762 U CN215220762 U CN 215220762U CN 202120843466 U CN202120843466 U CN 202120843466U CN 215220762 U CN215220762 U CN 215220762U
- Authority
- CN
- China
- Prior art keywords
- plastic film
- metal coating
- current collector
- metal
- plating layer
- 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.)
- Active
Links
Images
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
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model belongs to the technical field of lithium ion battery, a mass flow body and graphite positive pole bipolar lithium ion battery is related to, including first metal coating, first plastic film, second plastic film and second metal coating, the first end of first plastic film connect in one side of second metal coating, the first end of second plastic film connect in the opposite side of second metal coating, the second metal coating cover in the lower surface of first plastic film and second plastic film, the second metal coating with the lower surface of first metal coating meets, the second end of first plastic film is outstanding in first metal coating and second metal coating, the second end of second plastic film is outstanding in first metal coating and second metal coating; according to the current collector, the first plastic film and the second plastic film on the two sides can be used for packaging between the current collectors; the bipolar battery made is lighter in weight and free of the risks of oxidation and lithium intercalation.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery, a mass flow body and graphite anode bipolar lithium ion battery is related to.
Background
Lithium ion batteries have the advantages of large capacity, high operating voltage, strong charge retention capability, high safety and the like, and are widely used in consumer electronics and electric vehicles. With the development of new energy automobiles, people put higher requirements on the endurance mileage of the new energy automobiles.
Currently, a mainstream bipolar lithium ion battery is an energy storage device formed by respectively forming a positive electrode and a negative electrode on two sides of a current collector, placing a diaphragm between adjacent bipolar electrodes, filling electrolyte, and stacking a plurality of diaphragms.
However, such a bipolar lithium ion battery is prone to generate voids and risks of oxidation and lithium intercalation.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the problem that the conventional bipolar lithium ion battery is easy to generate oxidation and lithium intercalation risks, the current collector and the graphite anode bipolar lithium ion battery are provided.
In order to solve the technical problem, on the one hand, the utility model provides a mass flow body. The current collector comprises a first metal coating, a first plastic film, a second plastic film and a second metal coating, wherein the first plastic film and the second plastic film are arranged at intervals, the first end of the first plastic film is connected to one side of the second metal coating, the first end of the second plastic film is connected to the other side of the second metal coating, the second metal coating covers the lower surfaces of the first plastic film and the second plastic film, the second metal coating is connected with the lower surface of the first metal coating, the second end of the first plastic film protrudes out of the first metal coating and the second metal coating, and the second end of the second plastic film protrudes out of the first metal coating and the second metal coating.
Optionally, the first metal plating layer is a copper plating layer.
Optionally, the copper plating is a graphite-doped plating.
Optionally, the second metal plating layer has a step section and a planar section, the step section is connected to the lower surface of the first metal plating layer, the first end of the first plastic film is connected to one side of the step section, the first end of the second plastic film is connected to the other side of the step section, and the step section has the same thickness as the first plastic film and the second plastic film.
Optionally, the thickness of the first metal plating layer is 0.5-2 microns;
the second metal coating is an aluminum coating and forms a bipolar current collector with the first metal coating, and the thickness of the plane section is 0.5-2 microns.
Optionally, the first plastic film and the second plastic film are PET films.
Optionally, the first metal coating is coated on the upper surfaces of the first plastic film and the second plastic film in an evaporation mode;
the second metal coating is covered on the lower surfaces of the first plastic film and the second plastic film in an evaporation mode.
Optionally, the thickness of the first plastic film is 1 to 50 micrometers, the thickness of the second plastic film is 1 to 50 micrometers, the thickness of the step section is 1 to 50 micrometers, and the thickness of the plane section is 1 to 50 micrometers.
The embodiment of the utility model provides a current collector, including first metallic coating, first plastic film, second plastic film and second metallic coating, first plastic film with second plastic film interval sets up, first plastic film's first end connect in one side of second metallic coating, the first end of second plastic film connect in the opposite side of second metallic coating, second metallic coating cover in the lower surface of first plastic film and second plastic film, the second metallic coating with the lower surface of first metallic coating meets, the second end of first plastic film is outstanding in first metallic coating and second metallic coating, the second end of second plastic film is outstanding in first metallic coating and second metallic coating; according to the current collector, the first plastic film and the second plastic film on the two sides can be used for packaging between the current collectors; the bipolar battery made is lighter in weight and free of the risks of oxidation and lithium intercalation.
On the other hand, the embodiment of the utility model provides a graphite anode bipolar lithium ion battery is still provided, and it includes foretell mass flow body.
Drawings
Fig. 1 is a schematic view of a current collector according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
2. a first metal plating layer; 5. a first plastic film; 6. a second plastic film; 7. a second metal plating layer; 71. a stepped section; 72. a planar segment.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, a current collector provided by an embodiment of the present invention includes a first metal plating layer 2, a first plastic film 5, a second plastic film 6, and a second metal plating layer 7, the first plastic film 5 and the second plastic film 6 are arranged at intervals, the first end of the first plastic film 5 is connected with one side of the second metal plating layer 7, the first end of the second plastic film 6 is connected to the other side of the second metal plating layer 7, the second metal plating layer 7 covers the lower surfaces of the first plastic film 5 and the second plastic film 6, the second metal plating layer 7 is connected with the lower surface of the first metal plating layer 2, the second end of the first plastic film 5 protrudes out of the first metal plating layer 2 and the second metal plating layer 7, the second end of the second plastic film 6 protrudes from the first metal plating layer 2 and the second metal plating layer 7.
The first plastic film 5 and the second plastic film 6 on two sides can be used for packaging between current collectors; the bipolar battery is made lighter in weight, and the like.
In one embodiment, the first metal plating layer 2 is a copper plating layer.
In one embodiment, the copper plating is a graphite-doped plating.
In one embodiment, the second metal plating layer 7 has a step section 71 and a flat section 72, the step section 71 is connected to the lower surface of the first metal plating layer 2, the first end of the first plastic film 5 is connected to one side of the step section 71, the first end of the second plastic film 6 is connected to the other side of the step section 71, and the step section 71 has the same thickness as the first plastic film 5 and the second plastic film 6.
In one embodiment, the thickness of the first metal plating layer 2 is 0.5 to 2 μm.
The second metal coating 7 is an aluminum coating and forms a bipolar current collector with the first metal coating 2, and the thickness of the plane section 72 is 0.5-2 microns.
In one embodiment, the first plastic film 5 and the second plastic film 6 are PET films.
In one embodiment, the first metal plating layer 2 is coated on the upper surfaces of the first plastic film 5 and the second plastic film 6 by evaporation.
The second metal plating layer 7 is coated on the lower surfaces of the first plastic film 5 and the second plastic film 6 in an evaporation mode.
In one embodiment, the thickness of the first plastic film 5 is 1-50 micrometers, the thickness of the second plastic film 6 is 1-50 micrometers, the thickness of the step section 71 is 1-50 micrometers, and the thickness of the plane section 72 is 1-50 micrometers.
Alternatively, the first metal plating layer and the second metal plating layer may be the same metal or different metals.
According to the embodiment of the present invention, the first plastic film and the second plastic film are disposed at an interval, the first end of the first plastic film is connected to one side of the second metal plating layer, the first end of the second plastic film is connected to the other side of the second metal plating layer, the second metal plating layer covers the lower surfaces of the first plastic film and the second plastic film, the second metal plating layer is connected to the lower surface of the first metal plating layer, the second end of the first plastic film protrudes out of the first metal plating layer and the second metal plating layer, and the second end of the second plastic film protrudes out of the first metal plating layer and the second metal plating layer; according to the current collector, the first plastic film and the second plastic film on the two sides can be used for packaging between the current collectors; the bipolar battery made is lighter in weight and free of the risks of oxidation and lithium intercalation.
In addition, an embodiment of the utility model also provides a graphite anode bipolar lithium ion battery, and it includes the mass flow body of above-mentioned embodiment.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A current collector is characterized by comprising a first metal coating, a first plastic film, a second plastic film and a second metal coating, wherein the first plastic film and the second plastic film are arranged at intervals, the first end of the first plastic film is connected to one side of the second metal coating, the first end of the second plastic film is connected to the other side of the second metal coating, the second metal coating covers the lower surfaces of the first plastic film and the second plastic film, the second metal coating is connected with the lower surface of the first metal coating, the second end of the first plastic film protrudes out of the first metal coating and the second metal coating, and the second end of the second plastic film protrudes out of the first metal coating and the second metal coating.
2. The current collector of claim 1, wherein the first metal plating is a copper plating.
3. The current collector of claim 2, wherein the copper plating is graphite-doped plating.
4. The current collector of claim 1, wherein the second metal plating layer has a step section and a flat section, the step section is connected to the lower surface of the first metal plating layer, the first end of the first plastic film is connected to one side of the step section, the first end of the second plastic film is connected to the other side of the step section, and the step section has the same thickness as the first plastic film and the second plastic film.
5. The current collector of claim 4, wherein the first metal plating layer has a thickness of 0.5-2 microns;
the second metal coating is an aluminum coating and forms a bipolar current collector with the first metal coating, and the thickness of the plane section is 0.5-2 microns.
6. The current collector of claim 1, wherein the first and second plastic films are PET films.
7. The current collector of claim 1, wherein the first metal plating layer is coated on the upper surfaces of the first plastic film and the second plastic film by evaporation;
the second metal coating is covered on the lower surfaces of the first plastic film and the second plastic film in an evaporation mode.
8. The current collector of claim 4, wherein the first plastic film has a thickness of 1-50 microns, the second plastic film has a thickness of 1-50 microns, the step section has a thickness of 1-50 microns, and the planar section has a thickness of 1-50 microns.
9. A graphite anode bipolar lithium ion battery comprising the current collector of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120843466.3U CN215220762U (en) | 2021-04-22 | 2021-04-22 | Current collector and graphite anode bipolar lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120843466.3U CN215220762U (en) | 2021-04-22 | 2021-04-22 | Current collector and graphite anode bipolar lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215220762U true CN215220762U (en) | 2021-12-17 |
Family
ID=79450091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120843466.3U Active CN215220762U (en) | 2021-04-22 | 2021-04-22 | Current collector and graphite anode bipolar lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215220762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022222946A1 (en) * | 2021-04-22 | 2022-10-27 | 沈晞 | Current collector and graphite anode bipolar lithium ion battery |
-
2021
- 2021-04-22 CN CN202120843466.3U patent/CN215220762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022222946A1 (en) * | 2021-04-22 | 2022-10-27 | 沈晞 | Current collector and graphite anode bipolar lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107078279B (en) | Negative electrode, lithium secondary battery comprising same, battery module comprising same, and method for producing negative electrode | |
| KR101357470B1 (en) | Electrode lead for secondary battery and secondary battery comprising the same | |
| JPH11238528A (en) | Lithium secondary battery | |
| CN210805919U (en) | Secondary battery, electrode member for secondary battery, battery module, and device using secondary battery | |
| CN112751037A (en) | Composite current collector, pole piece, battery and device using battery | |
| CN213546383U (en) | Lithium ion battery roll core | |
| CN112331927B (en) | Battery lamination electricity core and battery | |
| CN111193032A (en) | Current collector of lithium battery | |
| CN215220762U (en) | Current collector and graphite anode bipolar lithium ion battery | |
| CN209691836U (en) | A kind of battery core structure of lithium-ion battery | |
| CN108054440A (en) | A kind of square power battery | |
| CN112968180A (en) | Pole piece and lithium ion battery | |
| CN219610486U (en) | Composite current collector, pole piece and battery | |
| CN113161556A (en) | Current collector and lithium ion battery | |
| CN113224315A (en) | Current collector and lithium battery | |
| CN112968207A (en) | Composite battery | |
| CN214203735U (en) | Pole piece and diaphragm-free lithium ion battery | |
| CN205900715U (en) | Fill soon, put soon, long -lived lithium ion power batteries | |
| CN115241463A (en) | Current collector and graphite anode bipolar lithium ion battery | |
| CN216818393U (en) | Composite current collector, pole piece, battery and device using battery | |
| CN213026198U (en) | Copper-aluminum integrated current collector electrode and laminated battery | |
| CN201289891Y (en) | Internal uniform radiating structure of square power lithium ion battery pole group | |
| CN213564798U (en) | Packaging film structure for flexible packaging lithium battery | |
| CN113161628A (en) | Battery cell | |
| CN215220801U (en) | Battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220622 Address after: 518000 room 101-5, building 1, No. 9, Jinxiu Middle Road, Laokeng community, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Shen Xi Address before: 518118 room 101-5, building 1, No.9 Jinxiu Middle Road, Laokeng community, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Puli Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221129 Address after: 518000 B106, building 1, Yinxing Zhijie phase II, No. 1301-76, sightseeing Road, Xinlan community, Guanlan street, Longhua District, Shenzhen, Guangdong Province Patentee after: Shenzhen Maolue Technology Research Co.,Ltd. Address before: 518000 room 101-5, building 1, No. 9, Jinxiu Middle Road, Laokeng community, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee before: Shen Xi |