CN201498609U - Conductive connection sheet made of side clad metal sheet strips and strips thereof - Google Patents
Conductive connection sheet made of side clad metal sheet strips and strips thereof Download PDFInfo
- Publication number
- CN201498609U CN201498609U CN2009201330198U CN200920133019U CN201498609U CN 201498609 U CN201498609 U CN 201498609U CN 2009201330198 U CN2009201330198 U CN 2009201330198U CN 200920133019 U CN200920133019 U CN 200920133019U CN 201498609 U CN201498609 U CN 201498609U
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- metal
- nickel
- copper
- sheet
- connecting piece
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- Expired - Lifetime
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 94
- 239000002184 metal Substances 0.000 title claims abstract description 94
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 134
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052802 copper Inorganic materials 0.000 claims abstract description 67
- 239000010949 copper Substances 0.000 claims abstract description 67
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 67
- 238000004080 punching Methods 0.000 claims description 10
- 150000002739 metals Chemical class 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 24
- 238000011084 recovery Methods 0.000 abstract description 8
- 230000007704 transition Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 29
- 239000002131 composite material Substances 0.000 description 16
- 229910052782 aluminium Inorganic materials 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 239000004411 aluminium Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 7
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000003475 lamination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000027950 fever generation Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
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Abstract
A conductive connection sheet made of side clad metal sheet strips comprises at least two metal sheets, which include one or two copper or nickel metal sheets and other metal sheets cheaper than copper or nickel, wherein the metal sheets are arranged along the length direction of the conductive connection sheet; and the adjacent metal sheets are tightly bonded with each other at the end faces. With the combining advantages of the side clad metal sheet strips, the conductive connection sheet can meet the requirement of high conductivity and transition welding parts, and can greatly save the consumption of rare metal. In addition, the conductive connection sheet can achieve the function of transitconnexion of each part while obviating the negative influence caused by lapping, and can improve the recovery and use value of waste materials.
Description
Technical field
The utility model relates to a kind of conductive connecting piece and band thereof that becomes with side clad metal sheet band punching out, can be used for the conduction Connection Elements of a large amount of employings of fields such as electronics, electrical equipment, battery, electric vehicle institute.
Background technology
Need a large amount of conducting connecting parts that adopt at present in fields such as electronics, electrical equipment, battery, electric vehicles, the parts material that its pairing connects mainly comprises steel, nickel, aluminium, copper, stainless steel etc., the material of conducting connecting part itself is metal, and is especially in the majority with nickel, copper product.Though copper has fine conductive and heat-conductive, mechanical performance, certain characteristics such as corrosion resistance preferably, when being connected with parts (as steel, the nickel etc.) pairing of non-copper dissimilar materials, often runs into difficulty or the not firm problem of welding quality of welding; Though occupy high status in common metal and nickel has composite characteristics such as electricity, mechanics, corrosion resistance, weldability preferably, its rare resource to cause its price to be in always.It should be noted that in addition copper is compared with steel, aluminium, also belong to more rare metal material relatively.Therefore saving alternative pure nickel, fine copper and so on rare metal and solving foreign material welding difficulty is the problem that merits attention in the design of conducting connecting part material always.
Can reach at above-mentioned conducting connecting part at present and save in the practice that substitutes rare metal effect, each producer mainly takes the lamination composite construction material of (or claiming sandwich structure) both at home and abroad.But also exist some also to be difficult to the problem that solves so far from aspects such as its preparation process, serviceability, cost recovery:
1) a large amount of at present plating or chemical deposit methods that adopt need to use and discharge chemical substances such as a large amount of acid, alkali in manufacture process, and environmental pollution is very serious, even adopted emission treatment, has increased production cost indirectly.
2) electroplate or the cover material of electroless plating method preparation remains than big-difference with homogenous material (as pure nickel) performance on performance.For example, nickel plated steel strip is because base layer is mild steel (low than pure nickel material conductivity), and the resistivity of integral material exceeds more than 40% than pure nickel, and the same reason of the stainless resistivity of nickel plating then exceeds pure nickel more than 6 times.These materials are as being used for the connection of battery component, and all the pure nickel conducting connecting part of more former use has increased the internal resistance of battery greatly, is unfavorable for improving battery capacity and useful life.
3), exist the problem of aspects such as welding quality and cost recovery to make it to be difficult to promote though rolling coating method is very approaching even be better than single metal at aspects such as conductivity, mechanical property, corrosion resistances.Be example still to substitute pure nickel, its rolling coating be designed to the extexine pure nickel, intermediate layer material then should comprise stainless steel, copper, the thermal coefficient of expansion of foreign material, melting temperature difference easily cause face of weld weldering nuclear projection or low melting material copper to overflow in this laminated construction, thereby influence presentation quality and assembling, even cause that contact resistance increases; In addition, rolling coating method is inevitable leftover pieces in the course of processing, owing to be the Physical Metallurgy combination between each material constituent element in the leftover pieces, and faying face is parallel to strip material outer surface, make it to realize recoverys that separate of rare metal level (as nickel) and base metal (as stainless steel or copper) layer, thereby greatly reduce recycling of materials value.
And solve foreign material weld difficult aspect, basic at present foreign material overlap joint Welding Structure or the laminated composite materials structure of adopting of conducting connecting part.
Foreign material overlap joint Welding Structure can't solve the high problem of overlap contact resistance.In this design, at first choose with the corresponding easy welding material of two parts materials to be connected and carry out stacked overlap joint welding, form conducting connecting part this moment, then with this conducting connecting part two ends along its length respectively and parts to be connected match welding (being exactly the welding between same material under most situation).Very obvious, there is bigger contact resistance in the stacked overlap of this conducting connecting part itself, and contact resistance increase can causing local pyrexia causes the resistance instability on the one hand, has more seriously reduced the conductive capability of conducting connecting part.In addition in fact, the increase phenomenon of the overlap joint of foreign material and contact resistance means that indirectly consumption of materials increases.
Its two extexine of the conducting connecting part of laminated composite materials structure is then chosen respectively and the corresponding easy welding material of heterogeneous parts to be welded, for example will connect nickel part and copper part, and then conductive connecting piece between the two should be designed to copper/nickel lamination composite construction.Though this kind design conducting connecting part does not have overlap, thereby has reduced the contact resistance between foreign material largely, as hereinbefore, presentation quality and the value of the recycling in the made process after itself and parts weld still are difficult to satisfactory.
Summary of the invention
For solving the problems referred to above that existing conducting connecting part technology exists, the utility model provides a kind of conductive connecting piece that becomes with side clad metal sheet band punching out, and a kind of side clad metal sheet band that is used for this conductive connecting piece of punching out, this conductive connecting piece has made full use of the combination advantage of side composite material, can significantly save rare metal, the negative effect of having avoided overlap joint to be brought when realizing each parts transition linkage function has again improved the waste recovery value.
The conductive connecting piece that becomes with side clad metal sheet band punching out of the present utility model, comprise at least two sheet metals, one or two copper sheet metal or nickel sheet metal are wherein arranged, all the other are other sheet metal than copper or nickel cheapness, each sheet metal is arranged along the length direction of described conductive connecting piece, combines closely at end face between the adjacent metal sheet.
The thickness of described copper sheet metal or nickel sheet metal is identical with the thickness of other sheet metal, and does not have overlap joint between the adjacent metal sheet.
Be used for the side clad metal sheet band of the above-mentioned conductive connecting piece of punching out, comprise at least two kinds of metal tapes, a kind of is copper strips or nickel strap, and all the other are than copper strips or other relatively inexpensive metal tape of nickel strap, between the adjacent metal band in the adjacent side strong bonded.The thickness of all metal tapes is preferably identical.
The utility model is better than present design technology project, has realized the beneficial effect of following three aspects.
1, can significantly save rare metal
For intrinsic fine copper conductive connecting piece, can adopt the strip material of the copper/aluminium/copper side composite construction thick slightly to prepare length dimension and width dimensions and the same copper-saving conductive connecting piece of former (fine copper material) design than the fine copper design, this is because the proportion of aluminium is gently a lot of than copper, can guarantee this copper-saving conductive connecting piece monolithic conductive near in addition be better than under the intrinsic fine copper conductive connecting piece situation, realize whole loss of weight, promptly reach the purpose of joint copper.For intrinsic pure nickel conductive connecting piece, can adopt the conductive connecting piece of the nickel/copper/nickel side composite construction of fully same size to substitute, thereby reach joint nickel target.In the above two kinds of cases, as long as guarantee to adopt the conductive connecting piece two ends along its length of the utility model scheme to leave the copper material or the nickel material part of enough pairings welding position, can guarantee do not changing or adjusting the firm welding that realizes conductive connecting piece of the present utility model and parts to be connected under the former welding procedure situation slightly.
The negative effect of having avoided overlap joint to be brought when 2, realizing each parts transition linkage function again.
When parts material to be connected not simultaneously, the constituent element metal material of conductive connecting piece of the present utility model must be considered and foreign material parts pairing requirement of welding, choose promptly that to carry out the side compound with the corresponding easy welded plate band of two parts to be connected, adding transition metal in the middle of in case of necessity, to carry out the side equally compound, to guarantee that each intermetallic side is connected firmly, strip after the side compound working procedure is finished can obtain the conducting connecting part of final size again through processing, the respective material of the conducting connecting part end positions of this moment then is very easy to realize that with parts to be connected pairing has been welded respectively.
The method of side composition metal can adopt methods such as laser welding, electron beam welding, special rolled be compound, recombination process each constituent element intermetallic in whole side need not overlap joint (being the same thickness of compound tense), can guarantee each metal material in the side strong bonded, the negative effect that the contact resistance of therefore having avoided overlap joint to be brought increases.
3, improved the waste recovery value.
The rolling coating method of traditional laminated metal is owing to be combined into the Physical Metallurgy bonding between each stacking material, and faying face is parallel to strip material outer surface, make it leftover pieces can't realize rare metal level with than the recovery that separates between cheap metal, be worth thereby greatly reduce recycling of materials.Be used for preparing various leftover pieces that the side complex plate strip of the utility model conductive connecting piece forms in the course of processing and be very easy to then realize that the classification of constituent element metal reclaims, this be since the faying face of side composite material perpendicular to strip material surface, be separated into different materials with cutting implement along the faying face shearing and just become very easy this moment, promptly helps materials classification and reclaim.Classification reclaims and to be worth improving each material reuse, it is significant to reduce cost recovery, and in fact this also means indirectly and has reached the purpose of saving rare metal.
Description of drawings
Fig. 1 is its joint nickel conductive connecting piece embodiment 1 schematic diagram;
Fig. 2 is its joint copper conductive connecting piece embodiment 2 schematic diagrames;
Fig. 3 is compound lug embodiment 3 schematic diagrames in its aluminium nickel side.
Embodiment
Further specify below in conjunction with embodiment.
Embodiment 1:
Former thickness 0.4mm, width 4mm, the total length 50mm of being designed to, hardness state are 1/4 hard vertical bar shaped pure nickel conductive connecting piece.
Embodiment 1 joint nickel conductive connecting piece is seen Fig. 1, adopts nickel/copper/nickel side composite metal structures.This joint nickel conductive connecting piece comprises a copper sheet metal 2 and two nickel sheet metals 1,3, each sheet metal is arranged along the length direction of this joint nickel conductive connecting piece, nickel sheet metal 1,3 respectively with the length direction both ends of the surface of copper sheet metal 2 symmetry strong bonded, form a faying face 12 of fluid-tight engagement between copper sheet metal 2 and the nickel sheet metal 1, form another faying face 23 of fluid-tight engagement between copper sheet metal 2 and the nickel sheet metal 3, the cross section of the cross section of copper sheet metal 2, nickel sheet metal 1,3 is rectangle.The thickness of this nickel sheet metal 1,3, width all thickness, the width with copper sheet metal 2 are identical.
Preparation process is: two soft attitude nickel strap materials that 0.5mm is thick, width is 6mm and 0.5mm are thick, width is the thick soft attitude copper strip of 38mm, copper strip is symmetricly set on the copper strip both sides at middle two nickel strap materials, and technologies such as employing electron beam welding make the firm face combination of each band adjacent side; The compound good band in side through rolling be machined to 0.4mm thick after, at last along the horizontal punch forming Fig. 1 of band vertical bar shaped conductive connecting piece, the overall dimension of integral product and former design are identical, thickness 0.4mm, width 4mm, total length 50mm, nickel sheet metal 1,3 overall dimensions of copper sheet metal 2 two ends symmetries can be guaranteed to weld with the pairing of parts to be connected on its length direction, and are equal to the pure nickel weld part that welds with the parts pairing in the former design fully.The design saves pure nickel than traditional design and has reached 76%, and because the conductivity of fine copper sheet metal 2 is far superior to pure nickel, the conductive capability along its length of the more intrinsic conductive connecting piece of this conductive connecting piece has improved nearly 60%.
According to the specific product designing requirement, the width of the ratio of the width of copper sheet metal 2 and thickness, nickel sheet metal 1,3 and the ratio of thickness all can be 1: 0.05-0.3.
Embodiment 2:
Former thickness 0.4mm, width 4mm, the length 50mm of being designed to, the fine copper conductive connecting piece of half-hard state.
Preparation process is: two 0.8mm is thick, width is that 6mm, 1/4 hard attitude copper strip and 0.8mm are thick, width is 1/4 a thick hard attitude aluminum strip of 38mm, aluminum strip is symmetricly set on the aluminum strip both sides at middle two copper strips, and technologies such as employing electron beam welding make the firm face combination of each band adjacent side; The compound good band in side through rolling be machined to 0.6mm thick after, at last along the horizontal punching press of band, can be prepared into Fig. 2 and save copper vertical bar shaped conductive connecting piece, its thickness 0.6mm, width 4mm, total length 50mm, integral product except that thickness changes slightly, all the other overall dimensions and former design are identical.Wherein copper sheet metal 1,3 overall dimensions of two ends symmetry can be guaranteed to weld with the pairing of parts to be connected on this joint copper vertical bar shaped conductive connecting piece length direction, and realize easily.This joint copper vertical bar conductive connecting piece whole conductivity is identical with former design, and because the density of fine aluminium is well below fine copper, even the more intrinsic conductive connecting piece of newly-designed conductive connecting piece is thick a little, but total weight also has only 70% of the same conductive capability fine copper of former design sheet, and copper consumption then is about intrinsic 64%.
According to the specific product designing requirement, the width of the ratio of the width of aluminum metal film 2 and thickness, copper sheet metal 1,3 and the ratio of thickness all can be 1: 0.05-0.3.
Embodiment 3:
Vertical bar shaped element (the 0.15mm*3mm*40mm that the used lug (also can be regarded as conductive connecting piece) of a kind of aluminum hull lithium ion battery is washed into for aluminium nickel composite band (the respective thickness ratio is 1: 2), the wide * of thick * is long) or aluminium/nickel lap jointing type changes weld tabs, and (aluminium strip and nickel strap thickness are 0.15mm, width is 3mm, aluminium strip length 36mm, nickel strap length is 10mm, two materials overlap joint overlap length is 6mm)
The preparation process of this lug is: 0.8mm is thick, width is that 6mm half-hard state pure nickel band and 0.8mm are thick, width is the thick soft attitude aluminum strip of 44mm, adopts electron beam welding or laser welding process to make the firm face combination of two band adjacent side; The compound good band in side through the softening annealing of rolling and middle necessity be machined to 0.15mm thick after, at last along the horizontal punching press of band, promptly can be made into Fig. 3 lug (or vertical bar shaped conductive connecting piece), its thickness 0.15mm, width 3mm, total length 40mm, overall dimension and former design are identical, wherein corresponding with nickel part and the aluminum hull respectively welding of nickel sheet metal 1 and aluminum metal film 2, thereby welding quality is very firm and stable.The conductive capability of this design has improved more than 15% than primary aluminum nickel composite band lug along the band length direction, improves more than 20% and change weld tabs than lap jointing type; From joint nickel effect, new design is saved pure nickel 77% (not calculating the loss that aluminium nickel composite band reclaims nickel as yet) than aluminium nickel composite band lug, saves nickel 40% than lap jointing type.
According to the specific product designing requirement, the ratio of the ratio of the width of aluminum metal film 2 and thickness, the width of nickel sheet metal 1 and thickness is 1: 0.03-0.15.
Claims (4)
1. conductive connecting piece that becomes with side clad metal sheet band punching out, it is characterized in that comprising at least two sheet metals, one or two copper sheet metal or nickel sheet metal are wherein arranged, all the other are other sheet metal than copper or nickel cheapness, each sheet metal is arranged along the length direction of described conductive connecting piece, combines closely at end face between the adjacent metal sheet.
2. conductive connecting piece according to claim 1 is characterized in that: the thickness of described copper sheet metal or nickel sheet metal is identical with the thickness of other sheet metal, and does not have overlap joint between the adjacent metal sheet.
3. the side clad metal sheet band that is used for the described conductive connecting piece of punching out claim 1, it is characterized in that comprising at least two kinds of metal tapes, a kind of is copper strips or nickel strap, and all the other are than copper strips or other relatively inexpensive metal tape of nickel strap, between the adjacent metal band in the adjacent side strong bonded.
4. side according to claim 3 clad metal sheet band, it is characterized in that: the thickness of described all metal tapes is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201330198U CN201498609U (en) | 2009-06-19 | 2009-06-19 | Conductive connection sheet made of side clad metal sheet strips and strips thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201330198U CN201498609U (en) | 2009-06-19 | 2009-06-19 | Conductive connection sheet made of side clad metal sheet strips and strips thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498609U true CN201498609U (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201330198U Expired - Lifetime CN201498609U (en) | 2009-06-19 | 2009-06-19 | Conductive connection sheet made of side clad metal sheet strips and strips thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585762A (en) * | 2017-09-28 | 2019-04-05 | 江苏津谊新能源科技有限公司 | A kind of battery combination connection sheet |
| CN111069776A (en) * | 2020-01-06 | 2020-04-28 | 江苏远航精密合金科技股份有限公司 | Method for improving welding strength of pure nickel strip and aluminum strip for electronic industry |
-
2009
- 2009-06-19 CN CN2009201330198U patent/CN201498609U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585762A (en) * | 2017-09-28 | 2019-04-05 | 江苏津谊新能源科技有限公司 | A kind of battery combination connection sheet |
| CN111069776A (en) * | 2020-01-06 | 2020-04-28 | 江苏远航精密合金科技股份有限公司 | Method for improving welding strength of pure nickel strip and aluminum strip for electronic industry |
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Free format text: FORMER OWNER: XU ZHUOHUI Effective date: 20130918 Owner name: SHENZHEN ZHONGJIN LINGNAN SCIENCE + TECHNOLOGY CO. Free format text: FORMER OWNER: SHEN CUISHAN Effective date: 20130918 |
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Effective date of registration: 20130918 Address after: Jinxiu road 518000 in Guangdong province Shenzhen City Pingshan New District Industrial Zone No. 2 Patentee after: Shenzhen Nonfemet Technology Co., Ltd. Address before: 528000, No. 3, two floor, Xin Wei garden, No. 2, Xinfeng Road, Chancheng District, Guangdong, Foshan, 1 Patentee before: Shen Cuishan Patentee before: Xu Zhuohui |
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| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN XINYUE NEW MATERIAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENZHEN ZHONGJIN LINGNAN SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150807 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150807 Address after: Jinxiu Road, Pingshan Pingshan large industrial district of Shenzhen City, Guangdong Province, No. 2 518122 Patentee after: SHENZHEN NONFEMET TECHNOLOGY CO., LTD. Address before: Jinxiu road 518000 in Guangdong province Shenzhen City Pingshan New District Industrial Zone No. 2 Patentee before: Shenzhen Nonfemet Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
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