CN217281288U - Aluminum-nickel composite conductive connecting piece - Google Patents
Aluminum-nickel composite conductive connecting piece Download PDFInfo
- Publication number
- CN217281288U CN217281288U CN202221319913.6U CN202221319913U CN217281288U CN 217281288 U CN217281288 U CN 217281288U CN 202221319913 U CN202221319913 U CN 202221319913U CN 217281288 U CN217281288 U CN 217281288U
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- Prior art keywords
- nickel
- end head
- aluminum
- head part
- connecting piece
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- 239000002131 composite material Substances 0.000 title claims abstract description 28
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 title claims abstract description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 120
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 46
- 238000005452 bending Methods 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 7
- 229910000828 alnico Inorganic materials 0.000 claims 2
- 238000003466 welding Methods 0.000 abstract description 19
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 abstract description 11
- 238000009713 electroplating Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 6
- 238000006056 electrooxidation reaction Methods 0.000 description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a compound electrically conductive connecting piece of aluminium nickel, include: the aluminum bar comprises a first end head part, a bending part and a second end head part; the upper surface of the second end head part is welded with an upper nickel belt layer in a pressure welding way; the lower surface of the second end head part is welded with the lower nickel belt layer. Has the following advantages: (1) the end of the structure is directly lapped by nickel and aluminum, so that potential difference corrosion is avoided, and the service life of the conductive connecting piece is prolonged; (2) the surface of the welding end head contains a nickel belt layer, so that electroplating is cancelled, the corrosion of electroplating solution to products is reduced, and the influence of electroplating on the environment is reduced; (3) the nickel sheet adhered to the position of the welded junction has high bonding strength, thereby effectively avoiding the layering generated during hole machining and completely meeting the performance of the product; (4) the anti-vibration capability is strong; (5) the requirement of the binding amount of a rolled product is avoided, and the method is suitable for small-batch processing; (6) the connecting piece has the advantages of simple structure, mature process, easy realization of automatic production and lower cost than copper-aluminum composite board products.
Description
Technical Field
The utility model relates to an electrically conductive connecting piece, concretely relates to compound electrically conductive connecting piece of aluminium-nickel.
Background
In electrical equipment, copper and aluminum are the most commonly used conductive materials, and the conductive connection mode of a single battery cell in a new energy battery pack is generally as follows: the aluminum bar is connected with the battery cell by laser welding, the conductive connection between the battery cell and the output electrode is generally an aluminum hard connection product, and the aluminum hard connection is fastened with the copper output electrode by bolts. The prior art generally uses copper-aluminum composite boards to avoid the electrochemical corrosion problem that copper-aluminum direct lap joint can take place, as shown in fig. 1, which is a schematic diagram of copper-aluminum composite board products in the prior art: wherein 1 represents an aluminum row; and 2 represents a copper layer. However, the existing copper-aluminum composite process has the following defects:
(1) when the copper-aluminum composite plate is drilled or punched, gaps are easily generated between copper and aluminum, and local electrochemical corrosion is caused;
(2) the copper-aluminum composite processing mode is rolling, the binding amount is large, and the non-standard specification and small batch of the conductive connecting piece are more;
(3) the rolling and compounding process is complicated, so the cost is high.
SUMMERY OF THE UTILITY MODEL
The defect to prior art exists, the utility model provides an aluminium-nickel composite conductive connecting piece can effectively solve above-mentioned problem.
The utility model adopts the technical scheme as follows:
the utility model provides a compound electrically conductive connecting piece of aluminium nickel, include: the aluminum row (1) is integrally formed and comprises a first end head part (1-1), a bent part (1-2) and a second end head part (1-3); wherein the first end head part (1-1) is connected with the second end head part (1-3) through the bent part (1-2); the first endpiece (1-1) and the second endpiece (1-3) are both planar; the first end head part (1-1) is provided with a first mounting hole (1-1-1), and the first end head part (1-1) is connected with a conductive connection aluminum bar of an electric core in the battery pack through the first mounting hole (1-1-1); the second end head part (1-3) is provided with a second mounting hole (1-3-1);
the upper surface of the second end head part (1-3) is welded with an upper nickel strip layer (3-1), and the upper nickel strip layer (3-1) extends to the bending part (1-2); the lower surface of the second end head part (1-3) is bonded with a lower nickel strip layer (3-2), and the lower nickel strip layer (3-2) extends to the bending part (1-2); the length of the upper nickel band layer (3-1) is greater than that of the lower nickel band layer (3-2); the upper nickel strip layer (3-1) and the lower nickel strip layer (3-2) are in contact with an output electrode of a battery core copper material in the battery pack and then are fixedly connected with the output electrode of the copper material through a second mounting hole (1-3-1).
Preferably, 1060-H14 aluminum profiles are adopted in the aluminum row (1), and the thickness is 1-4 mm.
Preferably, the upper nickel strip layer (3-1) and the lower nickel strip layer (3-2) adopt N6M pure nickel strips with the thickness of 0.2 mm.
Preferably, the length difference between the upper nickel band layer (3-1) and the lower nickel band layer (3-2) is the thickness of the aluminum row (1).
The utility model provides a compound electrically conductive connecting piece of aluminium nickel has following advantage:
(1) the end of the structure is directly lapped by nickel and aluminum, so that potential difference corrosion is avoided, and the service life of the conductive connecting piece is prolonged;
(2) the surface of the welding end head contains a nickel belt layer, so that electroplating is cancelled, the corrosion of electroplating solution to products is reduced, and the influence of electroplating on the environment is reduced;
(3) the nickel sheet adhered to the position of the welded junction has high bonding strength, thereby effectively avoiding the layering generated during hole machining and completely meeting the performance of the product;
(4) the anti-vibration capability is strong;
(5) the requirement of the binding amount of a rolled product is avoided, and the method is suitable for small-batch processing;
(6) the connecting piece has the advantages of simple structure, mature process, easy realization of automatic production and lower cost than copper-aluminum composite board products.
Drawings
Fig. 1 is a schematic diagram of a copper-aluminum composite plate product in the prior art:
fig. 2 is a front view of the aluminum-nickel composite conductive connecting member provided by the present invention;
fig. 3 is a perspective view of the aluminum-nickel composite conductive connecting member provided by the present invention at an angle;
fig. 4 is a perspective view of the aluminum-nickel composite conductive connecting member provided by the present invention at another angle.
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.
Big, the manufacturing cost height of ordering volume to current copper aluminium composite sheet, and copper can not direct overlap joint with aluminium (the crystal boundary face of a body forms the fragility eutectic, leads to welding strength low) problem, the utility model discloses a novel aluminium nickel welding electrically conductive connecting piece replaces copper aluminium composite sheet, as long as aluminium nickel complex position does not have the gap, just can play the effect that prevents electrochemical corrosion, and this structure can realize that nickel and aluminium are compound together, can effectively solve the problem that copper aluminium composite sheet ordering volume is high, rolling cost is high.
The utility model discloses be applied to the occasion that needs the electrically conductive transition of copper aluminium, concretely relates to novel compound electrically conductive connecting piece of aluminium nickel that is used for electric core and output pole in the new forms of energy battery package. The novel aluminum-nickel welding conductive connecting piece replaces a copper-aluminum composite piece, so long as the aluminum-nickel composite position has no gap, the effect of preventing electrochemical corrosion can be achieved, the structure can realize the combination of nickel and aluminum, and the problems of high order quantity and high rolling cost can be effectively solved.
Referring to fig. 2-4, the utility model provides a compound electrically conductive connecting piece of aluminium nickel, include: the aluminum row 1 is integrally formed with the aluminum row 1 and comprises a first end head part 1-1, a bent part 1-2 and a second end head part 1-3; wherein, the first end head part 1-1 is connected with the second end head part 1-3 through a bending part 1-2; the first end head part 1-1 and the second end head part 1-3 are both planar; the first end head part 1-1 is provided with a first mounting hole 1-1-1, and the first end head part 1-1 is connected with a conductive connection aluminum bar of a battery cell in the battery pack through the first mounting hole 1-1-1; a second mounting hole 1-3-1 is formed in the second end head part 1-3;
the upper surface of the second end head part 1-3 is welded with an upper nickel strip layer 3-1 in a pressure welding mode, and the upper nickel strip layer 3-1 extends to a bending part 1-2; the lower surface of the second end head part 1-3 is welded with a lower nickel strip layer 3-2 in a pressure welding mode, and the lower nickel strip layer 3-2 extends to the bending part 1-2; the length of the upper nickel belt layer 3-1 is greater than that of the lower nickel belt layer 3-2; the upper nickel strip layer 3-1 and the lower nickel strip layer 3-2 are in contact with an output electrode of a battery core copper material in the battery pack, and then are fixedly connected with the output electrode of the copper material through the second mounting hole 1-3-1.
One specific embodiment is described below:
the preferred embodiment of the aluminum-nickel composite conductive connector of the present invention as shown in fig. 2-3 comprises an aluminum row 1, an upper nickel tape layer 3-1 and a lower nickel tape layer 3-2 welded at the ends.
Wherein, the aluminum row is 1060-H14 aluminum section, the thickness is 1-4mm, the hardness is 22-32HV, and the aluminum row has excellent conductive performance and tensile strength.
The nickel strip layer is an N6M pure nickel strip, the thickness is 0.2mm, the hardness is more than 33HV, the nickel strip has excellent corrosion resistance, welding and strength performance, and the strength and corrosion resistance of the lap joint surface can be effectively improved;
in the concrete implementation, 1 piece of nickel strap is needed to be adhered and welded to the end head part of the aluminum row, the nickel strap layer sizes of the upper surface nickel strap layer 3-1 and the lower nickel strap layer 3-2 are different, the upper nickel strap layer 3-1 is long-side size, the lower nickel strap layer 3-2 is short-side size, the difference length is the thickness of the aluminum row 1, and the length needs to pass through the product bending surface; the length that differs is in order to increase material strength, difficult fracture, and the product face of bending is crossed to length, supplements the aluminium and arranges intensity, avoids the department of bending fracture.
The nickel strap pressure welding is to the end portion of aluminium row, and is specific, and the pressure welding mode is: an induction welder special for aluminum is adopted, before welding, an aluminum bar is placed into an aluminum activator (the activator is 1:3 in terms of water) to be soaked for 3-5min, and a nickel sheet is placed into citric acid (the acid is 1:10 in terms of water) to be soaked for 2-3 min; manufacturing an aluminum-nickel composite conductive connecting piece, wherein the key process steps comprise punching an aluminum bar into a plane shape by punching, and welding a nickel sheet by adopting an induction pressure welding mode; the concrete mode is as follows: the upper layer and the lower layer of nickel strips and the aluminum row are clamped together, then the nickel sheets and the aluminum row are subjected to pressure welding, under certain pressure and temperature, aluminum on the pressed part of a workpiece is bonded to the nickel strip layer through surface melting after a certain period of time, the purpose of welding is achieved, the welding strength is high, and the problems of risk of electrochemical corrosion of the aluminum-copper composite row, high ordering amount, high rolling cost and the like are effectively solved. Thirdly, bending and punching by using a punch press, fourthly, polishing and cleaning, fifthly, checking the size and the appearance, and sixth, trimming, wiping and packaging.
The utility model provides a compound electrically conductive connecting piece of aluminium-nickel for an aluminium row and nickel piece welded electrically conductive, replaces former rolling copper aluminium composite sheet product, and its performance, quality and cost all account for obvious advantage. The concrete advantages are that:
(1) the end of the structure is directly lapped by nickel and aluminum, so that potential difference corrosion is avoided, and the service life of the conductive connecting piece is prolonged;
(2) the surface of the welding end head contains a nickel belt layer, so that electroplating is cancelled, the corrosion of electroplating solution to products is reduced, and the influence of electroplating on the environment is reduced;
(3) the nickel sheet adhered to the position of the welded junction has high bonding strength, thereby effectively avoiding the layering generated during hole machining and completely meeting the performance of the product;
(4) the anti-vibration capability is strong;
(5) the requirement of the binding amount of a rolled product is avoided, and the method is suitable for small-batch processing;
(6) the connecting piece has the advantages of simple structure, mature process, easy realization of automatic production and lower cost than copper-aluminum composite board products.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (4)
1. An aluminum-nickel composite conductive connector, comprising: the aluminum row (1) is integrally formed and comprises a first end head part (1-1), a bent part (1-2) and a second end head part (1-3); wherein the first end head part (1-1) is connected with the second end head part (1-3) through the bending part (1-2); the first end head (1-1) and the second end head (1-3) are both planar; the first end head part (1-1) is provided with a first mounting hole (1-1-1), and the first end head part (1-1) is connected with a conductive connection aluminum bar of an electric core in the battery pack through the first mounting hole (1-1-1); the second end head part (1-3) is provided with a second mounting hole (1-3-1);
the upper surface of the second end head part (1-3) is welded with an upper nickel strip layer (3-1), and the upper nickel strip layer (3-1) extends to the bending part (1-2); the lower surface of the second end head part (1-3) is bonded with a lower nickel strip layer (3-2), and the lower nickel strip layer (3-2) extends to the bending part (1-2); the length of the upper nickel strip layer (3-1) is greater than that of the lower nickel strip layer (3-2); the upper nickel strip layer (3-1) and the lower nickel strip layer (3-2) are in contact with an output electrode of a battery core copper material in the battery pack and then are fixedly connected with the output electrode of the copper material through a second mounting hole (1-3-1).
2. The aluminum-nickel composite conductive connecting piece as claimed in claim 1, wherein the aluminum row (1) is made of 1060-H14 aluminum profiles and has a thickness of 1-4 mm.
3. The alnico composite conductive interconnect according to claim 1, wherein the upper ni tape layer (3-1) and the lower ni tape layer (3-2) are N6M pure ni tapes with a thickness of 0.2 mm.
4. The alnico composite conductive connection according to claim 1, characterized in that the difference in length between the upper (3-1) and lower (3-2) layers of ni tape is the thickness of the row of al (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221319913.6U CN217281288U (en) | 2022-05-30 | 2022-05-30 | Aluminum-nickel composite conductive connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221319913.6U CN217281288U (en) | 2022-05-30 | 2022-05-30 | Aluminum-nickel composite conductive connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217281288U true CN217281288U (en) | 2022-08-23 |
Family
ID=82887434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221319913.6U Active CN217281288U (en) | 2022-05-30 | 2022-05-30 | Aluminum-nickel composite conductive connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217281288U (en) |
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2022
- 2022-05-30 CN CN202221319913.6U patent/CN217281288U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 8 Jufu South Road, Yujiawu Hui Township, Tongzhou District, Beijing, 101105 Patentee after: Beijing Weitongli Electric Co.,Ltd. Country or region after: China Address before: 101105 Beijing Tongzhou District Tongzhou District 8 South Road 1 1 1 Patentee before: BEIJING VICTORY ELECTRIC Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |