CN217640687U - Copper-aluminum composite material, photovoltaic cell, rechargeable battery and LED lamp - Google Patents
Copper-aluminum composite material, photovoltaic cell, rechargeable battery and LED lamp Download PDFInfo
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- CN217640687U CN217640687U CN202220989035.2U CN202220989035U CN217640687U CN 217640687 U CN217640687 U CN 217640687U CN 202220989035 U CN202220989035 U CN 202220989035U CN 217640687 U CN217640687 U CN 217640687U
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- aluminum
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- aluminum composite
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- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 60
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052802 copper Inorganic materials 0.000 claims abstract description 54
- 239000010949 copper Substances 0.000 claims abstract description 54
- 239000011888 foil Substances 0.000 claims abstract description 52
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 7
- 238000007738 vacuum evaporation Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 35
- 239000004020 conductor Substances 0.000 abstract description 9
- 239000004411 aluminium Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000005030 aluminium foil Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000011889 copper foil Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
An object of the utility model is to disclose a copper aluminium combined material, photovoltaic cell, rechargeable battery and LED lamp sets up the copper layer on the aluminium foil surface, aluminium foil thickness is 6 mu m-1000 mu m, copper layer thickness is 0.01 mu m-50 mu m, compares with prior art, and the beneficial effect of this embodiment is: (1) The copper layer has better heat conduction and electric conduction performance than pure aluminum, the copper layer is added on the surface of the aluminum strip or the aluminum foil, and the copper-aluminum composite material has the characteristics of good electric and heat conduction, low cost and small density, can be widely applied to the technical fields of heat conduction, electric conduction, shielding, bimetal connection and the like, and expands the material selection range in the field; (2) When the thickness of the aluminum foil is 6-20 mu m, the thinner copper-aluminum composite material can be used for current collectors or conductive materials of photovoltaic cells, rechargeable batteries and LED lamps, and has lower cost than pure copper materials; and when the thickness of the aluminum foil is 20-1000 μm, the thicker copper-aluminum composite material can be used as a heat conduction material or a shielding material.
Description
Technical Field
The utility model relates to a metal composite technical field especially relates to a copper aluminium combined material, photovoltaic cell, rechargeable battery and LED lamp.
Background
The copper material and the aluminum material both have good conductivity, and are widely applied to current collectors of products such as photovoltaic power generation, rechargeable batteries and LEDs, signal shielding, bimetal connection and the like. In general, a copper foil or an aluminum foil is used as a current collector, and the copper foil has the problems of high conductivity, high specific gravity, easy wrinkling, high price and the like, and the aluminum foil has the characteristics of low specific gravity and low price, which is about 60% of the conductivity of the copper foil, and is an excellent heat-conducting and electricity-conducting material. The material combining the advantages of the current collector and the shielding material is suitable for current collector materials, shielding materials, bimetal connecting materials and the like with weight reduction requirements, energy density requirements and comprehensive material cost requirements.
Therefore, how to prepare a conductive material with good conductivity and capable of reducing the material density and the application cost becomes a technical problem to be overcome by people. In the existing process, people can compound copper foil and aluminum foil together through a rolling process, but the composite product produced by the rolling process is too thick and cannot be applied to a current collector with high energy density requirement; the copper is plated on the aluminum foil in an electroplating mode, but the process has emission index limitation, and meanwhile, a copper layer formed by the process has certain technical problems in the aspects of interface strength, single-sided and double-sided control, surface layer uniformity and the like.
In view of this, how to prepare a thin copper-aluminum composite material by an environment-friendly process is a technical problem to be solved urgently.
Disclosure of Invention
An object of the utility model is to disclose a copper aluminium combined material, photovoltaic cell, rechargeable battery and LED lamp.
The first object of the present invention is to provide a copper-aluminum conductive material.
The second object of the present invention is to provide a photovoltaic cell.
A third object of the present invention is to provide a rechargeable battery.
The fourth object of the present invention is to provide an LED lamp.
In order to achieve the first object, the present invention provides a copper-aluminum composite material, wherein a copper layer is disposed on a surface of an aluminum foil, a thickness of the aluminum foil is 6 μm to 1000 μm, and a thickness of the copper layer is 0.01 μm to 50 μm.
Preferably, the copper layer is attached to the surface of the aluminum foil by a vacuum evaporation coating process or a magnetron sputtering coating process.
Preferably, the aluminum foil is a microporous aluminum foil.
Preferably, the pore diameter of the microporous aluminum foil is 10 to 200 μm.
Preferably, the thickness of the aluminum foil is 6-20 μm, and the thickness of the copper layer is 1-4 μm.
In order to achieve the second object, the present invention provides a photovoltaic cell, which comprises a current collector, wherein the current collector adopts the copper-aluminum composite material created by the first invention, and the total thickness of the copper-aluminum composite material is 25 μm-55 μm.
Preferably, the copper layer has a thickness of 2 μm to 3.5 μm.
In order to achieve the third objective, the present invention provides a rechargeable battery, which comprises a battery current collector, wherein the battery current collector adopts the copper-aluminum composite material created by the first invention, and the total thickness of the copper-aluminum composite material is 10 μm-15 μm.
Preferably, the copper layer has a thickness of 1.5 μm to 2 μm.
In order to achieve the fourth object, the present invention provides an LED lamp, which comprises a conductive substrate, wherein the conductive substrate is made of the copper-aluminum composite material according to the first invention, the total thickness of the copper-aluminum composite material is 10 μm to 45 μm, and the thickness of the copper layer is 1 μm to 10 μm.
Compared with the prior art, the beneficial effect of this embodiment is:
(1) The copper layer has better heat conduction and electric conduction performance than pure aluminum, the copper layer is added on the surface of the aluminum strip or the aluminum foil, and the copper-aluminum composite material has the characteristics of good electric and heat conduction, low cost and small density, can be widely applied to the technical fields of heat conduction, electric conduction, shielding, bimetal connection and the like, and expands the material selection range in the field;
(2) When the thickness of the aluminum foil is 6-20 μm, the thinner copper-aluminum composite material can be used for current collectors or conductive materials of photovoltaic cells, rechargeable batteries and LED lamps, and has lower cost and lower density than pure copper materials; when the thickness of the aluminum foil is 20-1000 μm, the thicker copper-aluminum composite material can be used as a heat conduction material or a shielding material, and the cost is lower than that of a pure copper material.
Drawings
FIG. 1 is a cross-sectional view of the copper-aluminum composite material of the present invention;
fig. 2 is a top view of the microporous aluminum foil of the present invention.
Wherein, 1, aluminum foil; 11. micropores; 2. a copper layer.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and that the functional equivalents, methods, or structural equivalents thereof, or substitutions thereof by those skilled in the art are all within the scope of the present invention.
In the description of the present invention, it is to 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example one
Referring to fig. 1, the present embodiment provides a copper-aluminum composite material, a copper layer 2 is disposed on a surface of an aluminum foil 1, a thickness of the aluminum foil 1 is 6 μm to 1000 μm, and a thickness of the copper layer 2 is 0.01 μm to 50 μm.
Specifically, the aluminum foil 1 has the characteristics of small specific gravity, good electric conductivity and low cost, and is widely applied to the fields of heat conduction, electric conduction technology, shielding and the like, but the heat conduction and the electric conductivity of the aluminum foil 1 are poorer than those of copper, in order to improve the electric conductivity and the heat conduction performance of the aluminum foil 1, the surface of the aluminum foil is provided with the copper layer 2, the thickness of the copper layer 2 is 0.01-50 μm, the electric conductivity and the heat conduction performance of the aluminum foil 1 are improved through the copper layer 2, and the copper-aluminum composite material has the performances of good electric conductivity, low cost, small density and good heat conductivity, can be widely applied to the technical fields of heat conduction, electric conduction, shielding, bimetal connection and the like, and is supplement and expansion of pure copper materials. For example, when the thickness of the aluminum foil is 6 μm to 20 μm, the thinner copper-aluminum composite material can be used for current collectors or conductive materials of photovoltaic cells, rechargeable batteries and LED lamps, so that the material cost is reduced while the conductive efficiency is maintained; when the thickness of the aluminum foil is 20-1000 μm, the thicker copper-aluminum composite material can be used as a heat conduction material or a shielding material, so that the cost is reduced while the efficiency of the heat conduction material or the shielding material is kept.
In a preferred embodiment, the copper layer 2 is attached to the surface of the aluminum foil 1 by a vacuum evaporation coating process or a magnetron sputtering coating process. Specifically, the copper layer 2 is a vacuum copper plating layer or a magnetron sputtering copper layer, the vacuum copper plating layer is formed by a vacuum evaporation coating process, the magnetron sputtering copper layer is formed by a magnetron sputtering process, and no matter the vacuum evaporation coating process or the magnetron sputtering coating process is adopted, the copper layer 2 is attached to the surface of the aluminum foil 1 in a deposition mode and no plating solution exists.
As a preferred embodiment, the aluminum foil 1 is a microporous aluminum foil. Specifically, the microporous aluminum foil is provided with a plurality of micropores, the micropores are punched in a laser mode, and the existence of the micropores further reduces the weight of the copper-aluminum composite material and can further improve the energy density when being used as a conductive material; when the microporous aluminum foil is used as a heat conduction material, the contact specific surface area of the microporous aluminum foil and air is larger, and the heat dissipation efficiency is better.
As a preferred embodiment, the pore diameter of the microporous aluminum foil is 10-200 μm. Specifically, fig. 2 is a top view of a microporous aluminum foil, the copper-aluminum composite material is a composite of the microporous aluminum foil and a copper layer, the microporous aluminum foil is provided with micropores 11, the micropores 11 are uniformly arranged, the distance between the micropores 11 is 1mm-2mm, the distance between the micropores 11 cannot be too small so as to avoid affecting the tensile strength of the microporous aluminum foil, and the distance between the micropores 11 cannot be too large, otherwise, the micropores are difficult to function; the diameter of the micropore 11 is 10 mu m-200 mu m, the micropore 11 is formed by laser drilling, the diameter of the micropore 11 can be selected from 10 mu m, 20 mu m, 50 mu m, 70 mu m, 100 mu m, 120 mu m, 150 mu m, 180 mu m and 200 mu m, the micropore 11 with the diameter is selected, the tensile strength of the micropore aluminum foil can be ensured, heat dissipation can be carried out through the micropore 11, and the electric conduction performance of the composite material are not influenced after the copper layer 2 is arranged.
As a preferred embodiment, the aluminum foil 1 has a thickness of 6 μm to 20 μm, and the copper layer 2 has a thickness of 1 μm to 4 μm. Specifically, when the thickness of the aluminum foil 1 is 6-20 μm and the thickness of the copper layer 2 is 1-4 μm, the total thickness of the copper-aluminum composite material is 7-24 μm, and the copper-aluminum composite material with the thickness is suitable for being used as a conductive material, can be specifically applied to photovoltaic cells, rechargeable cells, LED lamps and the like, can reduce the density and the cost, and has popularization and application significance.
Example two
The embodiment provides a photovoltaic cell, which comprises a current collector, wherein the current collector adopts the copper-aluminum composite material of the embodiment one, and the total thickness of the copper-aluminum composite material is 25-55 μm. Specifically, the thickness of the copper layer is 2 μm to 3.5 μm, and table 3 shows that copper-aluminum composite materials with different thicknesses are used for the current collector of the photovoltaic cell.
TABLE 3 photovoltaic Current collector thickness gauge
The photovoltaic cell disclosed in this embodiment has the same technical solutions as those of the first embodiment, please refer to the first embodiment, and will not be described herein again.
EXAMPLE III
The embodiment provides a rechargeable battery, which comprises a battery current collector, wherein the battery current collector adopts the copper-aluminum composite material of the embodiment one, and the total thickness of the copper-aluminum composite material is 10-15 μm. Specifically, the copper layer thickness is 1.5 μm to 2 μm, and table 4 shows that copper-aluminum composites of different thicknesses are used for the battery current collectors of rechargeable batteries.
Table 4 battery current collector thickness meter
| Serial number | Thickness of aluminum foil/μm | Copper layer thickness/μm | Total thickness/. Mu.m | Use of |
| 1 | 8 | 2 | 10 | Battery |
| 2 | 11.5 | 1.5 | 13 | Battery current collector |
| 3 | 14 | 1 | 15 | Battery current collector |
The rechargeable battery disclosed in this embodiment has the same technical solutions as those in the first embodiment, and please refer to the description of the first embodiment, which will not be repeated herein.
Example four
The embodiment provides an LED lamp, which comprises a conductive base material, wherein the conductive base material is the copper-aluminum composite material, the total thickness of the copper-aluminum composite material is 10-45 μm, and the thickness of the copper layer is 1-10 μm. Specifically, table 5 shows copper aluminum composites of different thicknesses used as conductive substrates for LED lamps.
TABLE 5 thickness table of conductive base material
| Serial number | Thickness of aluminum foil/μm | Thickness of copper layer/μm | Total thickness/. Mu.m | Use of |
| 1 | 8 | 2 | 10 | |
| 2 | 17 | 3 | 20 | Conductive substrate |
| 3 | 24 | 6 | 30 | Conductive substrate |
| 4 | 35 | 10 | 45 | Conductive substrate |
The LED lamp disclosed in this embodiment has the same technical solutions as those of the first embodiment, please refer to the first embodiment, and will not be described herein again.
EXAMPLE five
The difference between the second embodiment and the third embodiment and the fourth embodiment is that the total thickness of the copper-aluminum composite material in the present embodiment is 20 μm to 1000 μm, and particularly when the total thickness is 50 μm to 1000 μm, the thickness of the copper layer is 0.01 μm to 50 μm, and the copper-aluminum composite material with the thickness is suitable for the technical fields of heat dissipation, shielding, bimetal connection and the like as a heat conduction material, a shielding material and a bimetal connection material, so that the efficiencies of the heat dissipation, the heat dissipation and the shielding are maintained, and the cost of the material is reduced.
The heat conductive material disclosed in this embodiment has the same components as those in the first embodiment, please refer to the description of the first embodiment, and will not be described herein again.
Claims (10)
1. The copper-aluminum composite material is characterized in that a copper layer is arranged on the surface of an aluminum foil, the thickness of the aluminum foil is 6-1000 mu m, and the thickness of the copper layer is 0.01-50 mu m.
2. The copper-aluminum composite material according to claim 1, wherein the copper layer is attached to the surface of the aluminum foil by a vacuum evaporation coating process or a magnetron sputtering coating process.
3. The copper aluminum composite material as claimed in any one of claims 1-2, wherein said aluminum foil is a microporous aluminum foil.
4. The copper-aluminum composite material as claimed in claim 3, wherein the pore size of the microporous aluminum foil is 10 μm to 200 μm.
5. The copper aluminum composite material in accordance with claim 1 or 4, wherein the aluminum foil has a thickness of 6 μm to 20 μm and the copper layer has a thickness of 1 μm to 4 μm.
6. The photovoltaic cell is characterized by comprising a current collector, wherein the current collector adopts the copper-aluminum composite material as claimed in claim 4, and the total thickness of the copper-aluminum composite material is 25-55 μm.
7. The photovoltaic cell of claim 6, wherein the copper layer has a thickness of 2 μm to 3.5 μm.
8. The rechargeable battery is characterized by comprising a battery current collector, wherein the battery current collector adopts the copper-aluminum composite material as claimed in claim 5, and the total thickness of the copper-aluminum composite material is 10-15 μm.
9. The rechargeable battery of claim 8 wherein the copper layer has a thickness of 1.5 μm to 2 μm.
An LED lamp, characterized in that, the LED lamp includes a conductive substrate, the conductive substrate adopts the copper-aluminum composite material of claim 4, the total thickness of the copper-aluminum composite material is 10 μm-45 μm, and the thickness of the copper layer is 1 μm-10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220989035.2U CN217640687U (en) | 2022-04-27 | 2022-04-27 | Copper-aluminum composite material, photovoltaic cell, rechargeable battery and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220989035.2U CN217640687U (en) | 2022-04-27 | 2022-04-27 | Copper-aluminum composite material, photovoltaic cell, rechargeable battery and LED lamp |
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| Publication Number | Publication Date |
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| CN217640687U true CN217640687U (en) | 2022-10-21 |
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| CN202220989035.2U Active CN217640687U (en) | 2022-04-27 | 2022-04-27 | Copper-aluminum composite material, photovoltaic cell, rechargeable battery and LED lamp |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231120 Address after: 215234 North side of Renmin East Road, Qidu Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Jiangsu Hanye Copper Aluminum Foil New Material Research Institute Co.,Ltd. Address before: 215234 No. 10, Qidu Avenue, Qidu Town, Wujiang District, Suzhou City, Jiangsu Province Patentee before: Jiangsu Hengtong Precision Copper Co.,Ltd. |
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| TR01 | Transfer of patent right |