CN109301146B - Aluminum bar for new energy battery and forming method thereof - Google Patents
Aluminum bar for new energy battery and forming method thereof Download PDFInfo
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- CN109301146B CN109301146B CN201811258809.9A CN201811258809A CN109301146B CN 109301146 B CN109301146 B CN 109301146B CN 201811258809 A CN201811258809 A CN 201811258809A CN 109301146 B CN109301146 B CN 109301146B
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- aluminum
- aluminum bar
- bar body
- battery terminal
- new energy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to the technical field of new energy batteries, in particular to an aluminum bar for a new energy battery and a forming method thereof.
Description
The technical field is as follows:
the invention relates to the technical field of new energy batteries, in particular to an aluminum bar for a new energy battery and a forming method thereof.
Background art:
with the exhaustion of petroleum energy and the increasing demand of people for environmental protection, electric vehicles or hybrid vehicles will play an important role in the battle of land vehicles. The battery is used as a core power source of an electric automobile, namely a power battery, and the indexes of safety, reliability and the like of the battery are particularly important. Because the vehicle-mounted power battery is formed by connecting dozens, hundreds or even thousands of batteries in series and parallel, the connecting terminals for connecting the batteries are generally directly fixed by screws, and the following situations can be encountered after long-term use:
1. when the whole vehicle has large impact, collision and other conditions, the functional components and the wires in the mechanism and the connecting parts are subjected to friction damage or disconnection and other failures due to displacement and pulling;
2. because the connecting part for connecting the batteries in series and parallel is directly attached to the battery terminal, the battery terminal and the connecting part are relatively loose, the assembly reliability is poor, and the assembly can be completed only by a positioning tool or manual assistance;
3. some of adapting unit adopt copper clad aluminium structural style, and the purpose is in order to strengthen adapting unit's yield strength, promotes adapting unit's mechanical strength, promotes whole power battery's transmission efficiency and life, but also has some problems, for example: (3.1) the processing procedure of the copper-clad aluminum structure is complex, (3.2) the cost of copper is far higher than that of aluminum, the introduction of copper promotes the cost of the product, and (3.3) because the mechanical property and the strength of the copper-clad aluminum are greatly promoted relative to aluminum, the processing strength and the difficulty are promoted when the copper-clad aluminum material is processed correspondingly, and because the structure and the manufacturing process are relatively complex, the cost is relatively high.
The invention content is as follows:
the invention overcomes the defects of the prior art and provides an aluminum bar for a new energy battery.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: an aluminum bar for a new energy battery comprises an aluminum bar body, wherein a plurality of mounting holes penetrating through the aluminum bar body are formed in the aluminum bar body, the mounting holes are arranged along the length direction of the aluminum bar body, and the mounting holes are formed in two sides of the aluminum bar body; the aluminum row body is characterized in that a containing groove used for being clamped with a battery terminal is formed in one end face of the aluminum row body, the containing grooves are at least two, the containing grooves are arranged in the middle of the aluminum row body, the containing groove is of a square or rectangular structure, and the aluminum row body is formed through a stamping process.
Preferably, a through hole is further formed in the middle of the accommodating groove.
Preferably, the thickness of the bottom of the accommodating groove is 2-2.5 mm, and the thickness of the aluminum row is 4-6 mm.
Preferably, the aluminum bar forming method for the new energy battery comprises the following steps:
(1) performing primary treatment, namely turning off oxide skins on the surfaces of the aluminum ingots;
(2) heating the primarily treated aluminum ingot to 700-720 ℃ to obtain molten aluminum liquid for later use;
(3) introducing the aluminum liquid in the step (2) into an extrusion cylinder, advancing to the product mold at an extrusion speed of 0.2-0.3 m/min, extruding the aluminum liquid, and extruding the aluminum liquid from a die hole of the product mold to form the aluminum row body;
(4) punching the aluminum bar body in the step (3) by using a punching machine to form the mounting hole;
(5) compacting the aluminum bar body in the step (4) by using a press until the thickness is 4-6 mm;
(6) stamping the aluminum bar body in the step (5) by adopting a press and a corresponding die to form the accommodating groove, wherein the thickness of the bottom of the accommodating groove is 2-2.5 mm;
(7) and (4) perforating the middle position of the accommodating groove in the step (6) to form the through hole.
In the present application, the step (2) is performed in a resistance furnace having a forced hot air circulation system.
In this application, in step (3), the thickness of aluminium row body is 7~9 mm.
Compared with the prior art, the beneficial effect of this application is:
1. the aluminum bar for the new energy battery comprises a containing groove, wherein the containing groove is clamped with a battery terminal, the aluminum bar can be positioned only by clamping the containing groove and the battery terminal during assembly, and the positioned aluminum bar is limited by clamping the containing groove and the battery terminal, so that the phenomenon of failure such as friction damage or disconnection caused by displacement and pulling between a functional component and a lead and between connecting components in a mechanism can be effectively avoided when the whole vehicle has large impact, collision and the like;
2. in the application, the battery terminal is equivalently embedded in the accommodating groove, so that the contact area between the battery terminal and the accommodating groove is increased, after the aluminum bar and the battery terminal are fixedly connected, the battery terminal passes through the through hole through laser welding to form a molten pool on the surface of the battery terminal, and in the process, the heat of the laser welding is transferred to the surface of the battery terminal and the periphery of the through hole to be fused together to form an integrated structure, so that the electric conductivity of the power battery is enhanced, and the connection reliability between the aluminum bar and the battery terminal is further enhanced;
3. in this application, adopt pure aluminium ingot to cast the aluminium row as raw and other materials, this in-process, arrange the body from original 7~9mm with the aluminium through the press, the compaction is to 4~6mm, has promoted holistic mechanical properties of aluminium row and anti yield strength, makes it have with the same mechanical properties of copper cladding aluminium, has reduced manufacturing cost and processing degree of difficulty, and this application is in order to further promote the reliability that battery terminal and storage tank are connected, adopts the press punching press to form the storage tank for the density of storage tank bottom is higher, promotes its compactness and stability, and mechanical properties is stronger, thereby has solved prior art, and the poor and poor problem of mechanical properties of connectivity after the aluminium row uses for a long time.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic half-section view of the present invention;
in the figure: 1-aluminum row body; 2, mounting holes; 3-accommodating groove; 4-through holes.
The specific implementation mode is as follows:
in order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further clarified with the specific embodiments.
Example 1:
as shown in fig. 1 and 2, an aluminum busbar for a new energy battery comprises an aluminum busbar body 1, wherein a plurality of mounting holes 2 penetrating through the aluminum busbar body 1 are formed in the aluminum busbar body 1, the mounting holes 2 are arranged along the length direction of the aluminum busbar body 1, and the mounting holes 2 are positioned on two sides of the aluminum busbar body 1; the aluminum row body is characterized in that one end face of the aluminum row body 1 is provided with two containing grooves 3 used for being clamped with a battery terminal, the containing grooves 3 are arranged in the middle of the aluminum row body 1, the containing grooves 3 are of rectangular structures, and the aluminum row body 1 is formed by a stamping process in the containing grooves 3.
With the exhaustion of petroleum energy and the increasing demand of people for environmental protection, electric vehicles or hybrid vehicles will play an important role in the battle of land vehicles. The battery is used as a core power source of an electric automobile, namely a power battery, and the indexes of safety, reliability and the like of the battery are particularly important. Because the vehicle-mounted power battery is formed by connecting dozens, hundreds or even thousands of batteries in series and parallel, the connecting terminals for connecting the batteries are generally directly fixed by screws, and the following situations can be encountered after long-term use: 1. when the whole vehicle has large impact, collision and other conditions, the functional components and the wires in the mechanism and the connecting parts are subjected to friction damage or disconnection and other failures due to displacement and pulling; 2. because the connecting part for connecting the batteries in series and parallel is directly attached to the battery terminal, the battery terminal and the connecting part are relatively loose, the assembly reliability is poor, and the assembly can be completed only by a positioning tool or manual assistance; 3. some of adapting unit adopt copper clad aluminium structural style, and the purpose is in order to strengthen adapting unit's yield strength, promotes adapting unit's mechanical strength, promotes whole power battery's transmission efficiency and life, but also has some problems, for example: (3.1) the processing procedure of the copper-clad aluminum structure is complex, (3.2) the cost of copper is far higher than that of aluminum, the introduction of copper promotes the cost of the product, and (3.3) because the mechanical property and the strength of the copper-clad aluminum are greatly promoted relative to aluminum, the processing strength and the difficulty are promoted when the copper-clad aluminum material is processed correspondingly, and because the structure and the manufacturing process are relatively complex, the cost is relatively high. The application provides a pair of aluminium is arranged for new energy battery, including storage tank 3, this storage tank 3 and battery terminal block, when the assembly, only need get up storage tank 3 and battery terminal block, just can fix a position the aluminium row, and the aluminium row after the location is spacing because storage tank 3 and battery terminal block, can effectively avoid the great impact of whole car appearance, during situations such as collision, can be because of the displacement between functional component in the mechanism and the wire and between each adapting unit, tear and take place the phenomenon of inefficacy such as friction damage or disconnection.
As shown in fig. 2, storage tank intermediate position department still is equipped with the through-hole, the bottom thickness of storage tank is 2.5mm, the thickness of aluminium row is at 4mm, thus, in this application, the battery terminal is equivalent to the embedding in storage tank 3, thereby the area of contact between battery terminal and the storage tank 3 has been increased, after aluminium row and battery terminal link firmly in this application, still pass through-hole 4 through laser welding and make battery terminal surface form the molten bath, in this process, the heat transfer of laser welding is for battery terminal surface and through-hole week side, make its common melting form a body structure, power battery's electric conductive property has not only been strengthened, the connection reliability between aluminium row and the battery terminal has further been strengthened.
Example 2:
the structure of this embodiment is basically the same as that of the first embodiment, and the same parts are not described again, except that: the application also discloses an aluminum bar forming method for the new energy battery, which comprises the following steps:
(1) performing primary treatment, namely turning off oxide skins on the surfaces of the aluminum ingots;
(2) heating the primarily treated aluminum ingot to 700-720 ℃ to obtain molten aluminum liquid for later use;
(3) introducing the aluminum liquid in the step (2) into an extrusion cylinder, advancing to the product mold at an extrusion speed of 0.2-0.3 m/min, extruding the aluminum liquid, and extruding the aluminum liquid from a die hole of the product mold to form the aluminum row body;
(4) punching the aluminum bar body in the step (3) by using a punching machine to form the mounting hole;
(5) compacting the aluminum bar body in the step (4) by using a press until the thickness is 4-6 mm;
(6) stamping the aluminum bar body in the step (5) by adopting a press and a corresponding die to form the accommodating groove, wherein the thickness of the bottom of the accommodating groove is 2-2.5 mm;
(7) and (4) perforating the middle position of the accommodating groove in the step (6) to form the through hole.
The step (2) is performed in a resistance furnace having a forced hot air circulation system.
In the step (3), the thickness of the aluminum row body is 7-9 mm.
In this application, adopt pure aluminium ingot to cast the aluminium row as raw and other materials, in this process, arrange body 1 from original 7~9mm with the aluminium through the press, the compaction is to 4~6mm, the holistic mechanical properties of aluminium row and anti yield strength have been promoted, make it have with the same mechanical properties of copper cladding aluminium, manufacturing cost and the processing degree of difficulty have been reduced, and this application is in order to further promote the reliability that battery terminal and storage tank 3 are connected, adopts the press punching press to form storage tank 3 for the density of storage tank 3 bottom is higher, promotes its compactness and stability, mechanical properties is stronger, thereby among the prior art has been solved, the poor and poor problem of mechanical properties of connectivity after the aluminium row uses for a long time.
The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An aluminum bar for a new energy battery is characterized by comprising an aluminum bar body, wherein a plurality of mounting holes penetrating through the aluminum bar body are formed in the aluminum bar body, the mounting holes are arranged along the length direction of the aluminum bar body, and the mounting holes are formed in two sides of the aluminum bar body;
the battery terminal is characterized in that one end face of the aluminum row body is provided with at least two accommodating grooves used for being clamped with a battery terminal, the accommodating grooves are arranged in the middle of the aluminum row body, the accommodating grooves are of square or rectangular structures, and the aluminum row body is formed into the accommodating grooves through a stamping process;
a through hole is also formed in the middle of the accommodating groove; after the aluminum bar body and the battery terminal are fixedly connected, the aluminum bar body penetrates through the through hole through laser welding to form a molten pool on the surface of the battery terminal, and the heat of the laser welding is transferred to the surface of the battery terminal and the periphery of the through hole to be fused together to form an integral structure;
the bottom of the accommodating groove is 2-2.5 mm in thickness, and the aluminum row is 4-6 mm in thickness;
the aluminum bar forming method for the new energy battery comprises the following steps of firstly carrying out extrusion forming on an aluminum bar, then carrying out punching, and finally carrying out punching:
(1) performing primary treatment, namely turning off oxide skins on the surfaces of the aluminum ingots;
(2) heating the primarily treated aluminum ingot to 700-720 ℃ to obtain molten aluminum liquid for later use;
(3) introducing the aluminum liquid in the step (2) into an extrusion cylinder, advancing to a product mold at an extrusion speed of 0.2-0.3 m/min, extruding the aluminum liquid, and extruding the aluminum liquid from a die hole of the product mold to form the aluminum row body;
(4) punching the aluminum bar body in the step (3) by using a punching machine to form the mounting hole;
(5) compacting the aluminum bar body in the step (4) by using a press until the thickness is 4-6 mm;
(6) stamping the aluminum bar body in the step (5) by adopting a press and a corresponding die to form the accommodating groove, wherein the thickness of the bottom of the accommodating groove is 2-2.5 mm;
(7) and (4) perforating the middle position of the accommodating groove in the step (6) to form the through hole.
2. The aluminum busbar for the new energy battery as set forth in claim 1, wherein the step (2) is performed in a resistance furnace having a forced hot air circulation system.
3. The aluminum busbar for the new energy battery as claimed in claim 1, wherein in the step (3), the thickness of the aluminum busbar body is 7-9 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811258809.9A CN109301146B (en) | 2018-10-26 | 2018-10-26 | Aluminum bar for new energy battery and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811258809.9A CN109301146B (en) | 2018-10-26 | 2018-10-26 | Aluminum bar for new energy battery and forming method thereof |
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| CN109301146A CN109301146A (en) | 2019-02-01 |
| CN109301146B true CN109301146B (en) | 2021-10-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7295010B2 (en) * | 2019-12-23 | 2023-06-20 | 豊田鉄工株式会社 | busbar |
| CN112635920A (en) * | 2020-12-23 | 2021-04-09 | 江苏艾鑫科能源科技有限公司 | Aluminum bar for new energy battery and forming method thereof |
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Denomination of invention: An aluminum bar for new energy battery and its forming method Effective date of registration: 20220701 Granted publication date: 20211015 Pledgee: Bengbu financing guarantee Group Co.,Ltd. Pledgor: Bengbu Jinshi Technology Co.,Ltd. Registration number: Y2022980009712 |
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