CN110241334A - A kind of batteries of electric automobile pallet machining manufacture - Google Patents
A kind of batteries of electric automobile pallet machining manufacture Download PDFInfo
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- CN110241334A CN110241334A CN201910650096.9A CN201910650096A CN110241334A CN 110241334 A CN110241334 A CN 110241334A CN 201910650096 A CN201910650096 A CN 201910650096A CN 110241334 A CN110241334 A CN 110241334A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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- Crystallography & Structural Chemistry (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a kind of batteries of electric automobile pallet machining manufactures, the following steps are included: aluminium alloy is carried out Alloying Treatment, aluminium alloy includes Si content 0.8-1.4%, Mg content 0.7-1.3%, Mn content 0.4-0.6% by mass fraction, Cu content 0.4-0.6%, Cr content 0-0.25%, Fe content 0-0.1%, Zn content 0-0.1%, Ti content is 0.15%, surplus Al；Molten aluminum progress melting, slag hitting, refining, the degasification of Alloying Treatment are obtained into pretreatment molten aluminum；Pretreatment molten aluminum is cast as primary aluminium bar；Primary aluminium bar is subjected to homogenization and is heat-treated obtained intermediate product；By intermediate product heating, squeeze, the cooling obtained extrudate of water mist；Extrudate is cut respectively and bending obtains bottom plate and bending profile；Bending profile is machined out obtained supporting plate；Bottom plate and supporting plate are subjected to soldering, moulded tray is made, the machining manufacture is simple, and obtained battery tray has high-intensitive, high tenacity, can anticorrosion stress-resistant, be able to satisfy the collision of automobile batteries pallet and fatigue require.
Description
Technical field
The present invention relates to battery tray processing technique field more particularly to a kind of batteries of electric automobile pallet processing and manufacturing sides
Method.
Background technique
Current electric car is increasingly becoming development trend, and automobile course continuation mileage becomes the main bottleneck of Development of Electric Vehicles,
How loss of weight, become more and more important project.And battery pack accounts for 30% of complete vehicle weight or so, therefore, battery pack loss of weight exists
Meaning is huge in automotive light weight technology.Aluminium alloy has light-weight, and specific strength is high, and perfect heat-dissipating is easily fabricated, and overall cost is low
The advantages that, become the preferred material of battery tray.
6000 line aluminium alloys have excellent processing performance, and extrusion forming is convenient, and bending, welding performance is excellent, become electricity
The preferential selection object of pond pallet.Existing 6063, although 6061 equal alloys processing performances are good, tensile strength, fracture toughness resists
Stress corrosion performance is low, and battery tray is easily deformed when automobile collides.When battery tray needs to guarantee to collide not
Deformation, inside battery do not change, so that the accidents such as battery catches fire be avoided to occur.And the trend of Development of Electric Vehicles is battery
Pallet and chassis integration, existing alloy and machining manufacture are difficult to meet current automobile batteries pallet hair integrated with chassis
The trend of exhibition.
In addition, existing processing and manufacturing mode, complex procedures are at high cost, are unfavorable for the mass production of battery tray.
Summary of the invention
The purpose of the present invention is to provide a kind of batteries of electric automobile pallet machining manufacture, machining manufacture letters
Single, obtained battery tray has high-intensitive, high tenacity, can anticorrosion stress-resistant, be able to satisfy automobile batteries pallet collision and tired
Labor requirement.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of batteries of electric automobile pallet processing and manufacturing side
Method, comprising the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction,
| Si | 0.8-1.4 |
| Mg | 0.7-1.3 |
| Mn | 0.4-0.6 |
| Cu | 0.4-0.6 |
| Cr | <0.25 |
| Fe | <0.1 |
| Zn | <0.1 |
| Ti | 0.15 |
| Al | Surplus |
S2) by molten aluminum melting, slag hitting, refining, the degasification after Alloying Treatment, pretreatment molten aluminum is obtained；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, water cooling is at primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, intermediate product is made after water cooling；
S5) intermediate product heating is squeezed, then cooling obtained extrudate；
S6) extrudate is cut, bottom plate is made, by extrudate bending to design angle, bending profile is made；
S7 bending profile) is subjected to ageing treatment；
S8 bending profile) is machined out processing, supporting plate is made；
S9 bottom plate and supporting plate) are subjected to soldering, welded using agitating friction, moulded tray is made.
As further optimization, S2) in molten aluminum smelting temperature be 750-760 DEG C.
As further optimization, S3) in pretreatment molten aluminum casting temperature be 690-700 DEG C.
As further optimization, S4) in primary aluminium bar carry out homogenization heat treatment, then 450 DEG C of heat preservation 2-3h heat up
To 575 DEG C of heat preservation 6-10h, high wind is air-cooled to 200 DEG C, then water cooling.
As further optimization, S5) in intermediate product be heated to 470-500 DEG C and squeezed, extrudings temperature is 480-
560 DEG C, water mist is cooling, cooling rate > 5 DEG C/S.
As further optimization, S6) in extrudate bending, bending is to 90-180 ° of design angle.
As further optimization, S7) in bending profile carry out 170 DEG C of heat preservation 3h, then at 185 DEG C of heat preservation 8h timeliness
Reason.
Compared with prior art, the present invention is by adjusting Si, Mg, Mn, the chemical components such as Cu, and battery tray aluminium alloy has both
High intensity, high tenacity, anticorrosion stress-resistant, good welding performance, it is at low cost the features such as, suitable for new energy battery tray plus
Work manufacturing process, it is demonstrated experimentally that aluminium alloy extrusions of the present invention tensile strength of mechanical property > 380Mpa, yield strength > 360 extend
Rate > 10%, strength factor >=85% of friction stir welding, exfoliation corrosion performance are not less than EA grades.
Detailed description of the invention
Fig. 1 is process route chart of the invention.
Fig. 2 is stir friction welding seam schematic diagram of the present invention.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
A kind of batteries of electric automobile pallet machining manufacture, comprising the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction, and Si contains
Measure 1.0%, Mg content 1.1%, Mn content 0.5%, Cu content 0.45%, Cr content 0.05%, Fe content 0.05%, Zn content
0.02%, Ti content are 0.15%, surplus Al；
S2 the molten aluminum after Alloying Treatment) is obtained into pretreatment molten aluminum in 750 DEG C of progress meltings, slag hittings, refining, degasification；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, casting temperature is 690 DEG C, after water cooling
At primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, 450 DEG C of heat preservation 2h then heat to 575 DEG C of heat preservation 10h, high wind
200 DEG C are air-cooled to, intermediate product is made after water cooling；
S5 intermediate product) is heated to 470 DEG C to squeeze, squeezing temperature is 560 DEG C, and water mist is cooling, cooling rate 5.5
DEG C/S, it is then cooling that extrudate is made；
S6) extrudate is cut, bottom plate is made, by extrudate bending to 90 °, bending profile is made；
S7 bending profile) is subjected to 170 DEG C of heat preservation 3h, then 185 DEG C of heat preservation 8h ageing treatments；
S8 bending profile) is machined out processing, supporting plate is made；
S9) by bottom plate and supporting plate, route is stirred friction welding (FW) soldering as shown in Figure 2, and moulded tray is made.
Embodiment 2
A kind of batteries of electric automobile pallet machining manufacture, comprising the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction, and Si contains
Measure 1.2%, Mg content 0.85%, Mn content 0.45%, Cu content 0.55%, Fe content 0.1%, Zn content 0.1%, Ti content
It is 0.15%, surplus Al；
S2 the molten aluminum after Alloying Treatment) is obtained into pretreatment molten aluminum in 760 DEG C of progress meltings, slag hittings, refining, degasification；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, casting temperature is 700 DEG C, after water cooling
At primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, 450 DEG C of heat preservation 3h then heat to 575 DEG C of heat preservation 6.5h, by force
Wind is air-cooled to 200 DEG C, and intermediate product is made after water cooling；
S5 intermediate product) is heated to 500 DEG C to squeeze, squeezing temperature is 480 DEG C, and water mist is cooling, cooling rate 6
DEG C/S, it is then cooling that extrudate is made；
S6) extrudate is cut, bottom plate is made, by extrudate bending to 95 °, bending profile is made；
S7 bending profile) is subjected to 170 DEG C of heat preservation 3h, then 185 DEG C of heat preservation 8h ageing treatments；
S8 bending profile) is machined out processing, supporting plate is made；
S9) by bottom plate and supporting plate, route is stirred friction welding (FW) soldering as shown in Figure 2, and moulded tray is made.
Embodiment 3
A kind of batteries of electric automobile pallet machining manufacture, comprising the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction, and Si contains
Measure 0.8%, Mg content 0.7%, Mn content 0.6%, Cu content 0.6%, Cr content 0.25%, Zn content 0.09%, Ti content
It is 0.15%, surplus Al；
S2 the molten aluminum after Alloying Treatment) is obtained into pretreatment molten aluminum in 755 DEG C of progress meltings, slag hittings, refining, degasification；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, casting temperature is 700 DEG C, after water cooling
At primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, 450 DEG C of heat preservation 3h then heat to 575 DEG C of heat preservation 8h, high wind
200 DEG C are air-cooled to, intermediate product is made after water cooling；
S5 intermediate product) is heated to 480 DEG C to squeeze, squeezing temperature is 500 DEG C, and water mist is cooling, cooling rate 6
DEG C/S, it is then cooling that extrudate is made；
S6) extrudate is cut, bottom plate is made, by extrudate bending to 90 °, bending profile is made；
S7 bending profile) is subjected to 170 DEG C of heat preservation 3h, then 185 DEG C of heat preservation 8h ageing treatments；
S8 bending profile) is machined out processing, supporting plate is made；
S9) by bottom plate and supporting plate, route is stirred friction welding (FW) soldering as shown in Figure 2, and moulded tray is made.
Embodiment 4
A kind of batteries of electric automobile pallet machining manufacture, comprising the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction, and Si contains
Amount 1.4%, Mg content 1.3%, Mn content 0.4%, Cu content 0.4%, Cr content 0.2%, Fe content 0.03%, Ti content are
0.15%, surplus Al；
S2 the molten aluminum after Alloying Treatment) is obtained into pretreatment molten aluminum in 760 DEG C of progress meltings, slag hittings, refining, degasification；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, casting temperature is 695 DEG C, after water cooling
At primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, 450 DEG C of heat preservation 2.5h then heat to 575 DEG C of heat preservation 10h, by force
Wind is air-cooled to 200 DEG C, and intermediate product is made after water cooling；
S5 intermediate product) is heated to 490 DEG C to squeeze, squeezing temperature is 520 DEG C, and water mist is cooling, cooling rate 8
DEG C/S, it is then cooling that extrudate is made；
S6) extrudate is cut, bottom plate is made, by extrudate bending to 90 °, bending profile is made；
S7 bending profile) is subjected to 170 DEG C of heat preservation 3h, then 185 DEG C of heat preservation 8h ageing treatments；
S8 bending profile) is machined out processing, supporting plate is made；
S9) by bottom plate and supporting plate, route is stirred friction welding (FW) soldering as shown in Figure 2, and moulded tray is made.
Embodiment 5
A kind of batteries of electric automobile pallet machining manufacture, comprising the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction, and Si contains
Measure 0.9%, Mg content 1.2%, Mn content 0.55%, Cu content 0.5%, Cr content 0.15%, Fe content 0.08%, Zn content
0.04%, Ti content are 0.15%, surplus Al；
S2 the molten aluminum after Alloying Treatment) is obtained into pretreatment molten aluminum in 750 DEG C of progress meltings, slag hittings, refining, degasification；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, casting temperature is 690 DEG C, after water cooling
At primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, 450 DEG C of heat preservation 3h then heat to 575 DEG C of heat preservation 8h, high wind
200 DEG C are air-cooled to, intermediate product is made after water cooling；
S5 intermediate product) is heated to 500 DEG C to squeeze, squeezing temperature is 550 DEG C, and water mist is cooling, cooling rate 6
DEG C/S, it is then cooling that extrudate is made；
S6) extrudate is cut, bottom plate is made, by extrudate bending to 95 °, bending profile is made；
S7 bending profile) is subjected to 170 DEG C of heat preservation 3h, then 185 DEG C of heat preservation 8h ageing treatments；
S8 bending profile) is machined out processing, supporting plate is made；
S9) by bottom plate and supporting plate, route is stirred friction welding (FW) soldering as shown in Figure 2, and moulded tray is made.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (7)
1. a kind of batteries of electric automobile pallet machining manufacture, which comprises the following steps:
S1 aluminium alloy) is subjected to Alloying Treatment by formula, wherein aluminium alloy includes following component by mass fraction,
S2) by molten aluminum melting, slag hitting, refining, the degasification after Alloying Treatment, pretreatment molten aluminum is obtained；
S3 pretreatment molten aluminum) is passed through into degassing and filtration case, into casting platform casting, water cooling is at primary aluminium bar；
S4 primary aluminium bar) is subjected to homogenization heat treatment, intermediate product is made after water cooling；
S5) intermediate product heating is squeezed, then cooling obtained extrudate；
S6) extrudate is cut, bottom plate is made, by extrudate bending to design angle, bending profile is made；
S7 bending profile) is subjected to ageing treatment；
S8 bending profile) is machined out processing, supporting plate is made；
S9 bottom plate and supporting plate) are subjected to soldering, moulded tray is made.
2. batteries of electric automobile pallet machining manufacture according to claim 1, which is characterized in that S2) in molten aluminum
Smelting temperature is 750-760 DEG C.
3. batteries of electric automobile pallet machining manufacture according to claim 1, which is characterized in that S3) in locate in advance
Managing molten aluminum casting temperature is 690-700 DEG C.
4. batteries of electric automobile pallet machining manufacture according to claim 1, which is characterized in that S4) in it is primary
Aluminium bar carries out homogenization heat treatment, and 450 DEG C of heat preservation 2-3h then heat to 575 DEG C of heat preservation 6-10h, and high wind is air-cooled to 200 DEG C,
Then water cooling.
5. batteries of electric automobile pallet machining manufacture according to claim 1, which is characterized in that S5) in it is intermediate
Product is heated to 470-500 DEG C and is squeezed, and squeezing temperature is 480-560 DEG C, and water mist is cooling, cooling rate > 5 DEG C/S.
6. batteries of electric automobile pallet machining manufacture according to claim 1, which is characterized in that S6) in squeeze
Profile bending, bending is to 90-180 ° of design angle.
7. batteries of electric automobile pallet machining manufacture according to claim 1, which is characterized in that S7) in bending
Profile carries out 170 DEG C of heat preservation 3h, then 185 DEG C of heat preservation 8h ageing treatments.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111633392A (en) * | 2020-07-17 | 2020-09-08 | 常州今创风挡系统有限公司 | Manufacturing process of connecting frame |
| CN112599904A (en) * | 2020-12-21 | 2021-04-02 | 上海捷新动力电池系统有限公司 | Anti-collision tray frame beam structure of power battery energy storage system and production method thereof |
| CN112899535A (en) * | 2019-12-03 | 2021-06-04 | 晟通科技集团有限公司 | 6-series aluminum alloy section for new energy battery tray and processing method thereof |
| CN113199210A (en) * | 2021-04-22 | 2021-08-03 | 张家港杰茂铝业有限公司 | Manufacturing method of high-precision ultrathin section filled with heat-insulation aluminum alloy |
| CN113369812A (en) * | 2021-06-07 | 2021-09-10 | 沈阳育成鑫成果转化技术服务有限公司 | Battery pack tray for electric automobile and manufacturing method thereof |
| CN114273862A (en) * | 2021-12-28 | 2022-04-05 | 东北大学 | Integrally-formed aluminum alloy battery tray and manufacturing method thereof |
| CN115070345A (en) * | 2022-05-10 | 2022-09-20 | 山东裕航特种合金装备有限公司 | Production method of new energy battery tray for ship |
| CN115415738A (en) * | 2022-08-10 | 2022-12-02 | 重庆友利森汽车科技有限公司 | Preparation process of aluminum alloy battery frame |
| CN115491549A (en) * | 2022-09-19 | 2022-12-20 | 浙江乐祥铝业有限公司 | High-strength high-toughness aluminum alloy material and preparation method and application thereof |
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| CN112599904A (en) * | 2020-12-21 | 2021-04-02 | 上海捷新动力电池系统有限公司 | Anti-collision tray frame beam structure of power battery energy storage system and production method thereof |
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