CN103273964B - A kind of electric car body base plate and preparation method thereof - Google Patents

A kind of electric car body base plate and preparation method thereof Download PDF

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CN103273964B
CN103273964B CN201310240823.7A CN201310240823A CN103273964B CN 103273964 B CN103273964 B CN 103273964B CN 201310240823 A CN201310240823 A CN 201310240823A CN 103273964 B CN103273964 B CN 103273964B
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aluminum alloy
magnesium aluminum
base plate
vermiculite
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CN103273964A (en
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张志国
张兵
刘俊明
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SHANDONG LICHI NEW ENERGY AUTOMOBILE Co Ltd
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SHANDONG LICHI NEW ENERGY AUTOMOBILE Co Ltd
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Abstract

The present invention relates to a kind of electric car body base plate and preparation method thereof, described base plate comprises panel and skeleton, in the middle part of car chassis, rear portion arranges center member and after cross member respectively, longeron in arranging between center member and after cross member, in the car chassis left and right sides, a left side is set, right vertical beam, form the framework installing power battery cabin, the material of described panel and skeleton is magnesium aluminum alloy composite material, wherein component one is magnesium aluminum alloy, proportion is 70-90%, component two is inorganic filler, proportion is 10-30%, containing accounting for its Sn of 0.5 ~ 9% in component one, the Pb of 0.05 ~ 5%, Sr≤2%, Sb≤0.2%, Te≤0.2%, and Mg 40-60% and Al 40-60%, containing the talcum accounting for its 10-30% in described component two, glass fibre 5-30%, vermiculite 15-25%, perlite rock 15-25%, titanium dioxide 1-3%, mica 1-5%.

Description

A kind of electric car body base plate and preparation method thereof
Technical field
The invention belongs to electronlmobil part field, particularly relate to a kind of electric car body base plate and preparation method thereof.
Background technology
Along with the increase day by day of consumption of petroleum amount, the minimizing gradually of demonstrated reserves, finished oil price rises rapidly, and the sign of energy shock slowly presents.At present, automobile manufacturing company main in the world competitively carries out the research of new energy sources for automobile technology, and in numerous new forms of energy substitute technology, electronlmobil develops very fast beyond doubt and has realistic meaning, and its development prospect is wide.Common way is exactly carry out structure and technical improvement on the basis of the fuel-engined vehicle of existing comparative maturity.In the design of electronlmobil, electrokinetic cell is used to provide the energy of driving, but due to the very huge electrokinetic cell bag of volume will be installed additional, under the chassis structure of existing fuel-engined vehicle, want, in front cross rail, after cross member, left longeron and right vertical beam, power brick is installed, due to suitable narrow and small in region that it is formed, abundant electrokinetic cell cannot be installed, thus the stroke of electronlmobil is restricted.Moreover, due to the increase of electrokinetic cell bag, car body weight will be made significantly to increase, and existing fuel-engined vehicle car body also cannot meet the requirement of electronlmobil in intensity, therefore needs to carry out further technological improvement to it, to meet the needs of electronlmobil.
Traditional automobile body floor structure is generally divided into floor panel and floor frame, the framework that floor frame generally adopts cage endergonic structure to form, this floor frame framework is by many crossbeams, longeron forms, the framework formed is in same level substantially, and this horizontal plane position is lower, electrokinetic cell is placed on underfloor, ground Clearance will be abnormal little, be placed on above floor, larger interior space will be taken, so the body platform of said structure can not be used in miniature electric automobile, affect the installation of electrokinetic cell.
At present, automobile body floor structure is generally made up of front floor (also known as main floor) assembly and rear floor assembly.Floor panel structure mostly is gasoline car structure, do not consider that electrokinetic cell is installed during this kind of structural flooring design, skeleton structure is arranged unreasonable comparatively speaking, floor strength and space are all not enough, cause the installation that cannot realize accumulator box in former gasoline car structure, the demand of electronlmobil electric power chassis system can not be met.And floor panel structure before too much using gasoline car when front floor of electric vehicle system structure design, the frame strength for installing battery assembly can be caused lower, the instability of floor system structure, in accumulator of electric car assembly, installable number of batteries is less, and the flying power of electronlmobil is poor; Easily produce panel beating fatigue when battery weight is excessive, battery comes off problem, reduce the safety performance of car load.
In the last few years, because people are to the raising of environmental requirement, new-energy automobile exploitation becomes focus.For electronlmobil design, commonplace mode is on the basis of existing fuel-engined vehicle, carry out the local transformation of the way.
Electrokinetic cell bag is the vitals of electronlmobil, and because it is bulky, for each designer, the layout of power brick is all a stubborn problem.The mode generally adopted at present is that power brick is arranged in electronlmobil underfloor.
this just relates to the transformation to fuel-engined vehicle floor.For the vehicle body of bearing-type, floor is main framing member, requires that there are enough structural strengths on floor.Meanwhile, consider cost of development, require that restructuring program is simple and easy, reduce the quantity of changing metal sheet as far as possible, reduce the input of tooling device.
Summary of the invention
For above-mentioned deficiency of the prior art, the object of the invention is to: a kind of electric car body base plate and preparation method thereof is provided, little with the body platform ground Clearance solving prior art, be placed on above floor, take larger interior space, can not be used in miniature electric automobile, affect the installation of electrokinetic cell, and use the composite material of magnesium aluminum alloy, add the intensity that inorganic non-metallic composition effectively enhances magnesium alloy, increase the toughness of alloy simultaneously, there is good damping capacity, reduce productive costs.
In order to realize foregoing invention object, the technical scheme of the application is as follows:
A kind of electric car body base plate, described base plate comprises panel and skeleton, in the middle part of car chassis, rear portion arranges center member and after cross member respectively, longeron in arranging between center member and after cross member, in the car chassis left and right sides, a left side is set, right vertical beam, form the framework installing power battery cabin, the material of described panel and skeleton is magnesium aluminum alloy composite material, wherein component one is magnesium aluminum alloy, proportion is 70-90%, component two is inorganic filler, proportion is 10-30%, containing accounting for its Sn of 0.5 ~ 9% in component one, the Pb of 0.05 ~ 5%, Sr≤2%, Sb≤0.2%, Te≤0.2%, and Mg 40-60% and Al 40-60%, containing the talcum accounting for its 10-30% in described component two, glass fibre 5-30%, vermiculite 15-25%, perlite rock 15-25%, titanium dioxide 1-3%, mica 1-5%, wherein said perlite rock and the particle diameter of vermiculite in component two are 0.5 ~ 2mm, the density of perlite rock in component two is 1.5 ~ 2g/cm 3, the density of vermiculite in component two is 2.5 ~ 2.7g/cm 3, the granularity of described talcum, mica is 200 mesh sieve blankings, and the mean diameter of glass fibre is 5-11 micron, and said ratio is all weight percentage, and the proportioning sum of all components meets 100%.
The mean diameter of described glass fibre is 5-6 micron.
The mean diameter of described glass fibre is 5 microns.
Also reinforcement is provided with between described left and right longeron and center member.
The preparation method of described base plate, step is as follows
Step one, according to the proportioning of component one raw material, is prepared burden, and by the raw material for preparing under reducing atmosphere condition, heat fused, is warming up to 600 DEG C, and constant temperature 20 minutes, cools to obtain magnesium aluminum alloy;
The magnesium aluminum alloy obtained is cut into the particle of 1-2mm by step 2;
The raw material of component two according to proportioning, is prepared burden by step 3, then mixes with the magnesium aluminum alloy particle in step 2, shaping, under reducing atmosphere condition, be heated to 700 DEG C, constant temperature 20 minutes, then cools in reducing atmosphere, obtained magnesium aluminum alloy composite material.
beneficial effect
The tensile strength of the product 1, using the magnesium aluminum alloy composite material in the present invention to prepare is 300MPa; Percentage elongation is 22%; Impact load stress 50MPa when strain is 0.006%.
2, the product in the present invention has been structurally the battery design of electronlmobil larger space;
3, excellent corrosion-proof performance, cost is low, is designed with reinforcement simultaneously, and make structure more firm, intensity is large.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Wherein, longeron, 7-chassis, 8-reinforcement in 1-center member, the left longeron of 2-, 3-power battery cabin, 4-after cross member, 5-right vertical beam, 6-.
Detailed description of the invention
Embodiment 1
A kind of electric car body base plate, described base plate comprises panel and skeleton, in the middle part of car chassis, rear portion arranges center member and after cross member respectively, longeron in arranging between center member and after cross member, in the car chassis left and right sides, a left side is set, right vertical beam, form the framework installing power battery cabin, the material of described panel and skeleton is magnesium aluminum alloy composite material, wherein component one is magnesium aluminum alloy, proportion is 70%, component two is inorganic filler, proportion is 30%, containing accounting for its Sn of 0.5% in component one, the Pb of 0.05%, Sr 2%, Sb 0.2%, Te 0.2%, and Mg 40% and Al 57.05%, containing accounting for its talcum of 12% in described component two, glass fibre 30%, vermiculite 25%, perlite rock 25%, titanium dioxide 3%, mica 5%, wherein said perlite rock and the particle diameter of vermiculite in component two are 0.5mm, the density of perlite rock in component two is 1.5g/cm 3, the density of vermiculite in component two is 2.5g/cm 3, the granularity of described talcum, mica is 200 mesh sieve blankings, and the mean diameter of glass fibre is 5 microns, and said ratio is all weight percentage, and the proportioning sum of all components meets 100%.
The preparation method of described base plate, step is as follows
Step one, according to the proportioning of component one raw material, is prepared burden, and by the raw material for preparing under reducing atmosphere condition, heat fused, is warming up to 600 DEG C, and constant temperature 20 minutes, cools to obtain magnesium aluminum alloy;
The magnesium aluminum alloy obtained is cut into the particle of 1mm by step 2;
The raw material of component two according to proportioning, is prepared burden by step 3, then mixes with the magnesium aluminum alloy particle in step 2, shaping, under reducing atmosphere condition, be heated to 700 DEG C, constant temperature 20 minutes, then cools in reducing atmosphere, obtained magnesium aluminum alloy composite material.
Embodiment 2
A kind of electric car body base plate, described base plate comprises panel and skeleton, in the middle part of car chassis, rear portion arranges center member and after cross member respectively, longeron in arranging between center member and after cross member, in the car chassis left and right sides, a left side is set, right vertical beam, form the framework installing power battery cabin, the material of described panel and skeleton is magnesium aluminum alloy composite material, wherein component one is magnesium aluminum alloy, proportion is 90%, component two is inorganic filler, proportion is 10%, containing the Pb accounting for its Sn of 9% 5% in component one, Sr 1%, Sb 0.1%, Te 0.1%, and Mg 50% and Al 34.8%, containing accounting for its talcum of 28% in described component two, glass fibre 30%, vermiculite 20%, perlite rock 20%, titanium dioxide 1%, mica 1%, wherein said perlite rock and the particle diameter of vermiculite in component two are 2mm, the density of perlite rock in component two is 2g/cm 3, the density of vermiculite in component two is 2.7g/cm 3, the granularity of described talcum, mica is 200 mesh sieve blankings, and the mean diameter of glass fibre is 6 microns, and said ratio is all weight percentage, and the proportioning sum of all components meets 100%.
The preparation method of described base plate, step is as follows
Step one, according to the proportioning of component one raw material, is prepared burden, and by the raw material for preparing under reducing atmosphere condition, heat fused, is warming up to 600 DEG C, and constant temperature 20 minutes, cools to obtain magnesium aluminum alloy;
The magnesium aluminum alloy obtained is cut into the particle of 2mm by step 2;
The raw material of component two according to proportioning, is prepared burden by step 3, then mixes with the magnesium aluminum alloy particle in step 2, shaping, under reducing atmosphere condition, be heated to 700 DEG C, constant temperature 20 minutes, then cools in reducing atmosphere, obtained magnesium aluminum alloy composite material.
Last it is noted that obviously, above-described embodiment is only for the application's example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among the protection domain of the application's type.

Claims (2)

1. an electric car body base plate, it is characterized in that: described base plate comprises panel and skeleton, in the middle part of car chassis, rear portion arranges center member and after cross member respectively, longeron in arranging between center member and after cross member, in the car chassis left and right sides, a left side is set, right vertical beam, form the framework installing power battery cabin, the material of described panel and skeleton is magnesium aluminum alloy composite material, wherein component one is magnesium aluminum alloy, proportion is 70-90%, component two is inorganic filler, proportion is 10-30%, containing accounting for its Sn of 0.5 ~ 9% in component one, the Pb of 0.05 ~ 5%, Sr≤2%, Sb≤0.2%, Te≤0.2%, and Mg 40-60% and Al 40-60%, containing the talcum accounting for its 10-30% in described component two, glass fibre 5-30%, vermiculite 15-25%, perlite rock 15-25%, titanium dioxide 1-3%, mica 1-5%, wherein said perlite rock and the particle diameter of vermiculite in component two are 0.5 ~ 2mm, the density of perlite rock in component two is 1.5 ~ 2g/cm 3, the density of vermiculite in component two is 2.5 ~ 2.7g/cm 3, the granularity of described talcum, mica is 200 mesh sieve blankings, and said ratio is all weight percentage, and the proportioning sum of all components meets 100%,
The mean diameter of described glass fibre is 5 microns;
Also reinforcement is provided with between described left and right longeron and center member.
2. the preparation method of base plate described in claim 1, is characterized in that, step is as follows:
Step one: according to the proportioning of component one raw material, prepare burden, by the raw material for preparing under reducing atmosphere condition, heat fused, is warming up to 600 DEG C, and constant temperature 20 minutes, cools to obtain magnesium aluminum alloy;
Step 2: the particle magnesium aluminum alloy obtained being cut into 1-2mm;
Step 3: by the raw material of component two according to proportioning, prepare burden, then mixes with the magnesium aluminum alloy particle in step 2, shaping, under reducing atmosphere condition, be heated to 700 DEG C, constant temperature 20 minutes, then cools in reducing atmosphere, obtained magnesium aluminum alloy composite material.
CN201310240823.7A 2013-06-18 2013-06-18 A kind of electric car body base plate and preparation method thereof Active CN103273964B (en)

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EP3235708A4 (en) * 2014-12-18 2018-08-08 Honda Motor Co., Ltd. Vehicle body frame
KR101840275B1 (en) * 2016-06-28 2018-03-20 현대자동차주식회사 Vermiculite Core for Vehicle and Method for Manufacturing thereof
CN109204541B (en) * 2017-06-30 2021-03-26 比亚迪股份有限公司 Vehicle body structure and vehicle

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CN1792504A (en) * 2005-12-26 2006-06-28 中国科学院长春应用化学研究所 Process for preparing composite material of high magnesium aluminium alloy-expanding ore
CN101386944A (en) * 2008-10-24 2009-03-18 南京信息工程大学 Corrosion resistant magnesium alloy and compound material containing corrosion resistant magnesium alloy and preparation method thereof
CN201597636U (en) * 2009-09-29 2010-10-06 中山大学 Triad structure lightweight electric automobile main structure
CN102530081A (en) * 2011-12-02 2012-07-04 常州科教城新能源汽车工程技术研究院 Frame of electric car
CN102632932A (en) * 2012-05-02 2012-08-15 德州艾狄孚新能源科技有限公司 Lower floor of automobile body of electric automobile
CN202783436U (en) * 2012-08-16 2013-03-13 东风汽车公司 Blade electric vehicle floor framework beam structure

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CN203996434U (en) * 2014-08-01 2014-12-10 河南超微电动汽车有限公司 Electronlmobil vehicle body base plate and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1792504A (en) * 2005-12-26 2006-06-28 中国科学院长春应用化学研究所 Process for preparing composite material of high magnesium aluminium alloy-expanding ore
CN101386944A (en) * 2008-10-24 2009-03-18 南京信息工程大学 Corrosion resistant magnesium alloy and compound material containing corrosion resistant magnesium alloy and preparation method thereof
CN201597636U (en) * 2009-09-29 2010-10-06 中山大学 Triad structure lightweight electric automobile main structure
CN102530081A (en) * 2011-12-02 2012-07-04 常州科教城新能源汽车工程技术研究院 Frame of electric car
CN102632932A (en) * 2012-05-02 2012-08-15 德州艾狄孚新能源科技有限公司 Lower floor of automobile body of electric automobile
CN202783436U (en) * 2012-08-16 2013-03-13 东风汽车公司 Blade electric vehicle floor framework beam structure

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