CN207474523U - A kind of aluminum alloy battery lower housing for new-energy automobile - Google Patents
A kind of aluminum alloy battery lower housing for new-energy automobile Download PDFInfo
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- CN207474523U CN207474523U CN201721265766.8U CN201721265766U CN207474523U CN 207474523 U CN207474523 U CN 207474523U CN 201721265766 U CN201721265766 U CN 201721265766U CN 207474523 U CN207474523 U CN 207474523U
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- bottom plate
- lower housing
- side frame
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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
A kind of aluminum alloy battery lower housing for new-energy automobile, the battery lower housing battery lower housing, side frame including bottom plate and positioned at bottom plate top edge position, the bottom plate form double-layer structure by bottom plate upper plate, bottom plate lower plate, uniformly distributed stud between bottom plate upper plate, bottom plate lower plate；The gusset of the uniformly distributed protrusion in the top surface of bottom plate upper plate, each gusset is parallel with the width direction of lower housing, and each gusset is equipped with the rivet nut for installing battery modules, and the bottom surface of bottom plate is equipped with the PVC protective layers of 12 mm of thickness.The utility model all shows apparent advantage in terms of vibration resistance intensity, impact resistance, collision safety performance, sealing performance, antiseptic property, anti-stoning energy and dead weight.The utility model using section bar extrusion, cold roll forming, agitating friction weldering and CMT welding etc. processes prepare, compared to traditional steel lower housing production technology have it is with short production cycle, equipment investment is low, and equipment component can realize the features such as general.
Description
Technical field
The utility model is related to a kind of automobile component, particularly for the aluminum alloy battery lower housing of new-energy automobile.
Background technology
Energy shortages, the obstacle that CO2 emission is excessive, environmental pollution becomes restriction automobile industry development at present.It faces
This predicament, exploitation and the inevitable direction for having become future automobile industrial development using new-energy automobile.In terms of the energy：In advance
Net notch will be occurred between global demand of petroleum and conventional oil supply later by surveying the year two thousand twenty, break away from the constraint of traditional energy,
It is automobile manufacture industry urgent problem to be solved；In terms of environment：The discharge capacity of carbon dioxide increases year by year, and national governments are numerous and confused
By formulating stringent discharge standard, Development of Novel power fuel, implementing emission reduction plan come restricting vehicle tail gas pollution.It is complete thus
The R＆D intensity and industrialization process of ball new-energy automobile have apparent topic to rise, and predict that following 5-10 will be new energy vapour
Vehicle enters the important stage of extensive industrialization, and will drive flourishing for entire industrial chain.New-energy automobile uses dynamic
Power battery system is mainly made of battery modules, battery case and pipeline, circuit system.Electrokinetic cell system is electric vehicle
Key components and parts, its safety, reliability and durability are most important, decide the performance of vehicle.Automobile power cell system
System is usually placed in below underbody, there is more harsh installation environment and severe working environment, battery case conduct
The carrier of power battery plays key effect in terms of power battery trouble free service and protection.
Battery case is divided into upper shell and lower housing, and upper shell is generally composite plastic material and is made, mainly to leakproofness
It there are certain requirements, not load-bearing itself.Lower housing is mostly steel part, is played to battery modules protection and load-bearing effect, product
Security performance, mechanical performance and dimension precision requirement are higher, are the critical components of battery case.New-energy automobile is particularly pure
Electric vehicle, because installation space is very limited, battery lower housing should be packed into the battery of more electricity, and vehicle perfect matching,
Meet the requirements of performance indicator again.In lower housing structure design, need to consider following factor：
(1) vibration resistance intensity.Realize fixation, the protection of super large weight battery, static strength is generally easier to reach,
Meet the maximum difficult point that oscillation intensity requirement is shell structure design.
(2) impact resistance.After undergoing impact test, it is desirable that hull outside and it is internal should not have mechanical failure, deformation and
The loose phenomenon of fastening position, and fall the impact that can regard special shape as.
(3) collision safety performance.Consider vehicle in head-on crash, side collision and rear collision process occurs to battery case
The effective protection measure for destroying and taking is squeezed caused by body is possible.
(4) anti-stoning energy.Battery location is easily hit in vehicle travel process by slungshot, and need increases protective thus sets
Meter.
(5) sealing performance.Battery is located at below underbody, on the outside of vehicle body, and, waterproof and dustproof close from road surface
Seal request it is essential.
(6) antiseptic property.The easily sticky rainwater in the position of battery, mud, are corrosion severely afflicated areas, antiseptic property requirement compared with
It is high.
(7) lightweight.In view of the operating cost of vehicle, while performance requirement is met, battery case is lighter better.
Battery lower housing in the electrokinetic cell system that volume production uses at present is substantially using steel stamping part.This kind of steel
Battery lower casing body weight processed is larger, reduces the energy density of battery pack, is unfavorable for the lightweight of vehicle and proposing for cruising ability
It rises, and steel battery lower housing production process is more complicated, technical process is long, and production cost is high.In addition, steel battery case work
Dress, the input of equipment are higher, and stamping equipment and welding equipment can only be directed to single product, if replacing product, it is also necessary to again
New equipment is put into, is unfavorable for the producing in serial form of product.Therefore, battery lower casing is improved from selection, preparation method and structure
Body designs, and can undoubtedly greatly promote the performance of new-energy automobile power battery.
Utility model content
The purpose of this utility model is that it is asked for the selection of steel battery lower housing, making and many of structure design are solved
Topic, provides a kind of aluminum alloy battery lower housing for new-energy automobile.
Problem described in the utility model is realized with following technical proposals：
A kind of aluminum alloy battery lower housing for new-energy automobile, including bottom plate and positioned at bottom plate top edge position
Side frame, the bottom plate form double-layer structure by bottom plate upper plate, bottom plate lower plate, uniformly distributed stud between bottom plate upper plate, bottom plate lower plate；Bottom
The gusset of the uniformly distributed protrusion in the top surface of plate upper plate, each gusset is parallel with the width direction of lower housing, and each gusset is equipped with to install
The rivet nut of battery modules, the bottom surface of bottom plate are equipped with the PVC protective layers of 1-2 mm of thickness.
The above-mentioned aluminum alloy battery lower housing for new-energy automobile, the bottom plate overall thickness are 12-20 millimeters, wherein,
Plate thickness 2-3 millimeters on bottom plate, plate thickness 2-3 millimeters under bottom plate, stud thickness is 2-3 millimeters, the spacing between adjacent stud
It is 40-70 millimeters.
The above-mentioned aluminum alloy battery lower housing for new-energy automobile, the cross sectional shape of the gusset are " Ш " shape, gusset
It it is highly 12-16 millimeters, the spacing between adjacent webs is 120-160mm.
The above-mentioned aluminum alloy battery lower housing for new-energy automobile, the bottom plate profile are and bottom similar to rectangle, side frame
The frame of remaining silent that plate orthographic projection profile matches, side frame corner arc transition, the outside of side frame straight section are equipped with plate ear.
The above-mentioned aluminum alloy battery lower housing for new-energy automobile, the bottom plate are formed by four pieces of base board sections soldering,
The length direction of four pieces of base board sections along bottom plate arranges docking, and the stud of base board sections marginal position is welding stud, and welding is vertical
The width dimensions of muscle are more than the width dimensions of other positions stud.
The above-mentioned aluminum alloy battery lower housing for new-energy automobile, the side frame by two pieces of side frame extrusion profile soldering and
Into two pieces of side frame extrusion profiles are welded as a whole in two long edge position pairings of side frame.
The above-mentioned aluminum alloy battery lower housing for new-energy automobile, side frame extrusion profile include side frame position and plate ear
Position, the cross sectional shape at side frame position is stud.
Battery lower housing described in the utility model reaches 300MPa using yield strength, and tensile strength reaches the conjunction of 350MPa aluminium
Metal type material makes, and battery lower housing includes bottom plate and side frame, and bottom plate is double-deck extrusion forming welding structure, and bottom plate top sets muscle
Plate, and rivet nut is installed on these gussets, the installation point position as battery modules.Side frame is squeezed out using aluminium alloy extrusions
Afterwards, the extra plate ear portions of machined excision, then cold roll forming processing is carried out, it is welded after realizing required shape with bottom plate
It closes.Above structure is in vibration resistance intensity, impact resistance, collision safety performance, sealing performance, antiseptic property, anti-stoning energy
Aspect all shows apparent advantage, wherein, gusset can play a supporting role in lateral compression, ensure the peace of battery modules
Full distance.Experiments have shown that：When battery lower housing lateral compression is tested under conditions of the extruding force for applying 300kN, battery case becomes
Shape amount is less than 10mm, reduces 35% compared with steel lower housing, makes battery modules still in safe distance.It is described from simulation analysis
Battery lower housing first-order modal 68Hz, same type steel scheme battery case are generally first-order modal 45Hz, and mode is conventional on year-on-year basis
Steel battery lower housing improves about 50%；Squeeze the more conventional steel battery lower housing of test deflection and reduce 35%, in rigidity and
Conventional steel battery case is superior in intensity, substantially increases the security performance of battery pack.In addition, aluminium alloy extrusions is used as original
Material compared to more than 40% steel battery lower housing loss of weight, is conducive to improve the cruising ability of power battery.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the vertical view of the utility model；
Fig. 3 is the B-B sectional views of Fig. 2；
Fig. 4 is the partial enlarged view at A in Fig. 3；
Fig. 5 is the C-C sectional views of Fig. 2；
Fig. 6 is the partial enlarged view at D in Fig. 5；
Fig. 7 is the schematic cross-section of base board sections.
Each list of reference numerals is in figure：1st, side frame, 2, plate ear, 3, gusset, 4, rivet nut, 5, bottom plate, 6, positioning pin, 7, bottom
Plate upper plate, 8, bottom plate lower plate, 9, stud, 10, welding stud, 11, PVC protective layers.
Specific embodiment
Referring to Fig. 1, aluminum alloy battery lower housing described in the utility model chooses yield strength and is more than or equal to 300MPa, tension
Aluminium alloy of the intensity more than or equal to 350MPa is prepared for raw material.The lower housing includes bottom plate 5 and positioned at bottom plate top edge position
The side frame 1 put.The profile of bottom plate is similar to rectangle, and side frame is the frame of remaining silent to match with bottom plate orthographic projection profile, side frame corner
Arc transition is equipped with plate ear 2 in the outside of three straight sections of side frame.
Referring to Fig. 2-Fig. 4, bottom plate forms double-layer structure by bottom plate upper plate 7, bottom plate lower plate 8, bottom plate upper plate, bottom plate lower plate it
Between uniformly distributed stud 9.In the gusset 3 of the uniformly distributed protrusion in the top surface of bottom plate upper plate, each gusset is parallel with the width direction of lower housing, gusset
Cross sectional shape for " Ш " shape, each gusset is equipped with the rivet nut 4 for installing battery modules.The bottom surface spraying 1-2 of bottom plate
The PVC protective layers 11 of mm of thickness hit noise to reduce its bottom stone.The geometric dimension of bottom plate each section is as follows：Bottom plate total thickness
It is 12-20 millimeters to spend, plate thickness 2-3 millimeters on bottom plate, plate thickness 2-3 millimeters under bottom plate, stud thickness be 2-3, adjacent stud
Between spacing be 40-70mm；Gusset height is 12-16 millimeters, and the spacing between adjacent webs is 120-160mm.
The bottom plate is formed by the agitated friction welding (FW) soldering of base board sections of four pieces of extrusions, and four pieces of base board sections are along bottom plate
Length direction arrangement docking, the section of base board sections are as shown in Figure 7.Stud positioned at base board sections marginal position is welding stud
10, the thickness for welding stud is more than 0.5-1 millimeters of the thickness of other positions stud, can be conducive to welding in this way
In the process to the support of stirring-head.The structure design of above-mentioned bottom plate can improve intensity under conditions of equivalent material input amount, double
Layer back-plane design shows unique superiority in terms of the anti-stoning energy of bottom；The setting of gusset makes lower housing and lateral compression
Aspect of performance is significantly improved, and when lateral compression is tested under conditions of the extruding force for applying 300kN, battery case deflection is less than
10mm makes battery modules may remain in safe distance.
Referring to Fig. 2, Fig. 5, Fig. 6, side frame 1 is the frame of remaining silent to match with bottom plate orthographic projection profile, and the corner of side frame is through cold
Bending deformation arc transition, plate ear 2 is equipped in the outside of three straight sections of side frame, is equipped with and is used at the plate ear of two long sides of side frame
In the positioning pin 6 of installation positioning.Side frame is formed by two pieces of side frame extrusion profile soldering, and two pieces of side frame extrusion profiles are the two of side frame
Long edge position pairing is welded as a whole.Side frame extrusion profile includes side frame position and plate ear position, as shown in fig. 6, wherein, side frame
The cross sectional shape at position is stud.
The processing of side frame will first squeeze out side frame section bar as shown in Figure 6 on extruder, by side frame section bar according to side frame
Size be cut to two parts, each part is according to the Spreading requirements of plate ear through plate ear extra on Milling Process removal side frame
The position plate ear of side frame bending position (position must remove), by two parts of side frame according to side frame contour shape respectively into
Row cold roll forming；Two parts of the side frame through cold roll forming are formed to the side frame being closed using CMT welding soldering, weld seam is located at
Side frame length to two straight flanges at.
After side frame processes respectively with bottom plate, bottom plate, the agitated friction welding (FW) soldering of side frame are integrated.
Claims (7)
1. a kind of aluminum alloy battery lower housing for new-energy automobile, including bottom plate (5) and positioned at bottom plate top edge position
Side frame (1), it is characterised in that：The bottom plate forms double-layer structure by bottom plate upper plate (7), bottom plate lower plate (8), bottom plate upper plate,
Uniformly distributed stud (9) between bottom plate lower plate；The width of the gusset (3) of the uniformly distributed protrusion in the top surface of bottom plate upper plate, each gusset and lower housing
Direction is parallel, and each gusset is equipped with the rivet nut (4) for installing battery modules, and the bottom surface of bottom plate is equipped with 1-2 mm of thickness
PVC protective layers (11).
2. the aluminum alloy battery lower housing according to claim 1 for new-energy automobile, it is characterised in that：The bottom plate
Overall thickness is 12-20 millimeters, wherein, plate thickness 2-3 millimeters on bottom plate, plate thickness 2-3 millimeters under bottom plate, stud thickness is 2-3
Millimeter, the spacing between adjacent stud is 40-70 millimeters.
3. the aluminum alloy battery lower housing according to claim 2 for new-energy automobile, it is characterised in that：The gusset
(3) cross sectional shape is " Ш " shape, and gusset height is 12-16 millimeters, and the spacing between adjacent webs is 120-160mm.
4. the aluminum alloy battery lower housing according to claim 3 for new-energy automobile, it is characterised in that：The bottom plate
Profile is similar to rectangle, and side frame is the frame of remaining silent to match with bottom plate orthographic projection profile, side frame corner arc transition, side frame straight section
Outside be equipped with plate ear (2).
5. the aluminum alloy battery lower housing according to claim 4 for new-energy automobile, it is characterised in that：The bottom plate
It is formed by four pieces of base board sections soldering, four pieces of base board sections arrange docking, base board sections marginal position along the length direction of bottom plate
Stud for welding stud (10), weld stud thickness be more than other positions stud thickness.
6. the aluminum alloy battery lower housing according to claim 5 for new-energy automobile, it is characterised in that：The side frame
It is formed by two pieces of side frame extrusion profile soldering, two pieces of side frame extrusion profiles are welded as a whole in two long edge position pairings of side frame.
7. the aluminum alloy battery lower housing according to claim 6 for new-energy automobile, it is characterised in that：Side frame squeezes out
Section bar includes side frame position and plate ear position, and the cross sectional shape at side frame position is stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721265766.8U CN207474523U (en) | 2017-09-29 | 2017-09-29 | A kind of aluminum alloy battery lower housing for new-energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721265766.8U CN207474523U (en) | 2017-09-29 | 2017-09-29 | A kind of aluminum alloy battery lower housing for new-energy automobile |
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| Publication Number | Publication Date |
|---|---|
| CN207474523U true CN207474523U (en) | 2018-06-08 |
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ID=62267197
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721265766.8U Active CN207474523U (en) | 2017-09-29 | 2017-09-29 | A kind of aluminum alloy battery lower housing for new-energy automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732062A (en) * | 2017-09-29 | 2018-02-23 | 凌云工业股份有限公司 | A kind of new-energy automobile aluminum alloy battery lower house and preparation method |
| CN112335105A (en) * | 2018-06-25 | 2021-02-05 | 麦格纳国际公司 | Battery frame |
-
2017
- 2017-09-29 CN CN201721265766.8U patent/CN207474523U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732062A (en) * | 2017-09-29 | 2018-02-23 | 凌云工业股份有限公司 | A kind of new-energy automobile aluminum alloy battery lower house and preparation method |
| CN112335105A (en) * | 2018-06-25 | 2021-02-05 | 麦格纳国际公司 | Battery frame |
| CN112335105B (en) * | 2018-06-25 | 2023-12-26 | 麦格纳国际公司 | battery frame |
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