CN217086775U - Metal and combined material combined type battery pack tray - Google Patents
Metal and combined material combined type battery pack tray Download PDFInfo
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- CN217086775U CN217086775U CN202123443426.9U CN202123443426U CN217086775U CN 217086775 U CN217086775 U CN 217086775U CN 202123443426 U CN202123443426 U CN 202123443426U CN 217086775 U CN217086775 U CN 217086775U
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Abstract
The utility model discloses a metal and combined material combined type battery pack tray, which comprises a frame body made of metal and a shell made of composite material, wherein the frame body comprises two longitudinal beams and two cross beams, each longitudinal beam comprises a top plate and a bottom plate, two inclined upper plates and two inclined lower plates are arranged between the top plate and the bottom plate, the slope of each upper plate is smaller than that of each lower plate, the upper plates and the lower plates are connected with the top plate and the bottom plate, the shell comprises an outer covering and an inner covering and is provided with a basin edge and a basin mouth, the outer covering and the inner covering are bonded at the basin edge, and a core material is also arranged between the outer covering and the inner covering at the basin buckle position; in this scheme, the casing of the compound material of framework cooperation of metal material can effectively reduce whole weight, and the bracing structure can improve the holistic anti extrusion ability of battery package and collision security, and the casing of covering material can reduce battery package cooling system's consumption, reduces cold volume and scatters and disappears, improves thermal insulation performance, and sandwich layer structure has good damping, the effect of shaking, has further improved the security.
Description
Technical Field
The utility model relates to a new energy automobile battery package tray, concretely relates to metal and combined material convolution battery package tray.
Background
The battery pack tray is used as an important component of a new energy automobile battery system, and has important influence on the safety, the light weight effect, the energy density and the heat preservation performance of the battery system. In the current industry application, both lithium iron phosphate batteries and ternary batteries have the problem of low-temperature discharge capacity attenuation. In order to improve the liquid cooling effect of the battery system and the mileage of the battery pack in winter, the heat insulation performance of the battery pack tray needs to be improved. The prior manufacturers adopt the modes of aluminum alloy or steel casting, metal plate and extrusion stamping to produce the battery pack trays, and then the battery pack trays have the problems of heavy weight, poor heat insulation performance, low safety and the like.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a metal and combined type battery package tray of light in weight, thermal insulation performance are strong, the security is high.
The technical scheme is as follows: the utility model discloses a metal and combined material convolution battery package tray, including the framework of metal material and the casing of compound material, the framework includes two longerons and two crossbeams, is equipped with the joist on the longeron, and the longeron includes roof and bottom plate, is equipped with two inclined upper plates and lower plates between roof and the bottom plate, and the slope of upper plate is less than the slope of lower plate and upper plate and lower plate are connected with roof and bottom plate;
the shell comprises an outer skin and an inner skin which are integrally in a shallow basin shape, a basin edge and a basin opening are formed, the outer skin and the inner skin are bonded at the basin edge, and a core material is further arranged between the outer skin and the inner skin at the basin buckling position.
In the technical scheme, the frame body made of metal materials is selected, so that the overall weight can be greatly reduced, and the strength, the rigidity and the collision extrusion safety of the tray are ensured; the shell made of the composite material also has higher specific rigidity and has the light weight effect of more than 20 percent. In addition, the design of upper plate and hypoplastron has constituted the bracing structure, can make under the collision operating mode like this, has improved anti extrusion, the invasion ability of battery package casing to holistic collision security has been improved. The casing of covering material can reduce battery package cooling system's consumption, reduces cold volume and scatters and disappears, improves the charge-discharge performance of battery system under low temperature environment simultaneously, and the design of sandwich layer can improve the structural damping of casing to when the car goes, play better damping, inhale the vibration effect, reduce battery package inside electric core and electronic component's vibration intensity.
Preferably, the lifting lugs are arranged on the cross beam, the spacer sleeves are arranged on the lifting lugs, the function of dispersing the bolt pre-tightening local stress during installation of the battery pack and the vehicle body can be achieved, the bolt torque is guaranteed, and the connection reliability is improved.
Preferably, the lifting lug is in a shape like a Chinese character 'kou', and the wall thickness of the lifting lug is 1.5-3 mm.
Preferably, the lifting lug is formed by stamping or sheet metal bending.
Preferably, the thickness of the outer skin and the thickness of the inner skin are 1-2 mm, V0 flame retardant prepreg is selected for the outer skin and the inner skin, and the single-layer thickness of the prepreg is 0.2-0.5 mm.
Preferably, adopt glue film and bolted connection between framework and the casing, the glue film is glued for the PU structure, and the thickness of glue film is 1 ~ 2.5mm, and it can play connection, buffering effect to casing and framework to avoid the framework to the friction and the extrusion of casing, also improved the antitorque commentaries on classics rigidity of whole battery package tray.
Preferably, the shell is provided with a metal insert corresponding to the bolt, so that local stress can be dispersed, and local connection strength is improved, thereby overcoming the problem that the sandwich composite material including the core material cannot be directly connected by tapping.
Preferably, the composite material of the shell is a continuous glass fiber composite material, a continuous carbon fiber composite material or an aramid fiber composite material.
Preferably, the core material is made of PET structural foam, PMI structural foam, PVC structural foam, foamed aluminum, aluminum honeycomb or aramid fiber honeycomb.
Has the beneficial effects that: compared with the prior art, the utility model, its advantage that has: 1. the frame body made of metal is matched with the shell made of composite materials, so that the overall weight can be effectively reduced, and meanwhile, the requirements on strength, rigidity and safety are met; 2. the inclined strut structure can improve the integral anti-extrusion capacity and collision safety of the battery pack; 3. the shell made of the skin material can reduce the power consumption of the battery pack cooling system, reduce the loss of cold energy and improve the heat insulation performance; 4. the core layer structure has good vibration reduction and absorption effects, and the safety is further improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a schematic structural view of the longitudinal beam of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
fig. 5 is a cross-sectional view of the housing.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, the metal and composite material combined type battery pack tray comprises a metal frame 1 and a composite material shell 2, wherein the frame 1 is formed by welding high-strength steel, after welding, electrophoresis is performed on the whole frame 1, and the tensile strength grade of the selected steel is not lower than 600 MPa. Therefore, on the premise of meeting the requirements of strength, rigidity and collision extrusion safety of the battery pack tray, the overall weight is reduced to the maximum extent.
As shown in fig. 3 and 4, the frame body 1 includes two longitudinal beams 3 and two cross beams 4, the longitudinal beam 3 is provided with a joist 31, the longitudinal beam 3 includes a top plate 32 and a bottom plate 33, two inclined upper plates 34 and two inclined lower plates 35 are arranged between the top plate 32 and the bottom plate 33, the inclination of the upper plate 34 is smaller than that of the lower plate 35, and the upper plate 34 and the lower plate 35 are both connected with the top plate 32 and the bottom plate 33, thereby forming a high-strength rectangular frame diagonal bracing structure.
The cross beam 4 is further provided with a lifting lug 41 formed by stamping or metal plate bending, the lifting lug 41 is provided with a spacer 42, the lifting lug 41 is in a shape like a Chinese character 'kou', the wall thickness is 1.5-3 mm, the design can disperse bolt pre-tightening local stress when the battery pack and the vehicle body are installed, and the reliability of integral connection is improved.
As shown in fig. 5, the shell 2 includes an outer skin 21 and an inner skin 22, which are integrally formed in a shallow basin shape, and a basin 23 and a basin 24 are formed at the same time, the outer skin 21 and the inner skin 22 are bonded at the basin 23, and a core material 25 is further disposed between the outer skin 21 and the inner skin 22 at the basin 24, so that a sandwich structure is formed by the outer skin 21, the inner skin 22 and the core material 25, and the three parts can be integrally formed by prepreg molding or RTM. The shell 2 can be independently provided with flange flanges with the thickness of 1-3 mm, and the flanges are matched with holes in the frame body through holes.
In terms of material, the shell 2 can be made of a continuous glass fiber composite material, a continuous carbon fiber composite material or an aramid fiber composite material or a combination of the three materials, the continuous fibers comprise a continuous fiber bundle and a fiber fabric, the fiber fabric comprises a plain weave fabric, a twill weave fabric, a satin weave fabric, a unidirectional fabric and a multi-axial warp knitting fabric, and meanwhile, the volume content of the continuous fibers of the skin is 50-70%. The core material 25 is made of PET structural foam, PMI structural foam, PVC structural foam, foamed aluminum, aluminum honeycomb or aramid honeycomb.
According to the shell structure made of the material, the heat conductivity coefficient of the skin material is 0.3W/m.K, the heat conductivity coefficient of the core material is 0.03-0.3W/m.K and is far lower than the heat conductivity coefficients of steel and aluminum alloy, the heat insulation performance is good, the power consumption of a battery pack cooling system can be effectively reduced, the loss of cold energy is reduced, meanwhile, the charge and discharge performance of a battery system in a low-temperature environment is improved, and the winter endurance mileage of an automobile is favorably improved.
The thickness of the outer skin 21 and the thickness of the inner skin 22 are 1-2 mm, V0 flame-retardant prepreg is adopted for the outer skin 21 and the inner skin 22, and the single-layer thickness of the prepreg is 0.2-0.5 mm.
Adopt glue film and bolted connection between framework 1 and the casing 2, the glue film is glued for the PU structure, and the thickness of glue film is 1 ~ 2.5mm, and 2 insides of casing are equipped with the metal insert 26 corresponding with the bolt simultaneously. The glue film can play the money towards the effect to being connected of broad body 1 and casing 2, avoids framework 1 to casing 2's friction and extrusion, has also improved the antitorque commentaries on classics rigidity of whole tray simultaneously. The metal insert 26 can disperse local stress, improve local connection strength and overcome the problem that the sandwich composite material including the core material cannot be directly connected by tapping.
Claims (9)
1. A metal and composite material combined type battery pack tray is characterized by comprising a metal frame and a composite material shell, wherein the metal frame comprises two longitudinal beams and two cross beams, the longitudinal beams are provided with the joist and comprise top plates and bottom plates, two inclined upper plates and two inclined lower plates are arranged between the top plates and the bottom plates, the slope of the upper plates is smaller than that of the lower plates, and the upper plates and the lower plates are connected with the top plates and the bottom plates;
the casing is including wholly being the outer covering and the interior covering of shallow basin form and being formed with basin limit and basin mouth, outer covering with interior covering is in basin limit department bonds mutually, outer covering with between the interior covering the basin mouth position still is equipped with the core.
2. The metal and composite combined battery pack tray of claim 1, wherein the cross beam is provided with a lifting lug, and the lifting lug is provided with a spacer bush.
3. The metal and composite combined battery pack tray as claimed in claim 2, wherein the lifting lug is in a shape of a square, and the wall thickness of the lifting lug is 1.5-3 mm.
4. The metal and composite combined battery pack tray of claim 2, wherein the lifting lugs are formed by stamping or sheet metal bending.
5. The metal and composite material combined type battery pack tray as claimed in claim 1, wherein the thickness of the outer skin and the thickness of the inner skin are 1-2 mm, the V0 flame retardant prepreg is adopted for both the outer skin and the inner skin, and the single-layer thickness of the prepreg is 0.2-0.5 mm.
6. The metal and composite combined battery pack tray of claim 1, wherein the frame body and the shell are connected by a glue layer and bolts, the glue layer is PU structural glue, and the thickness of the glue layer is 1-2.5 mm.
7. The metal and composite combination battery pack tray of claim 6, wherein metal inserts corresponding to the bolts are provided on the housing.
8. The metal and composite combined battery pack tray of claim 1, wherein the composite material of the housing is a continuous glass fiber composite, a continuous carbon fiber composite, or an aramid fiber composite.
9. The metal and composite combined battery pack tray of claim 1, wherein the core material is PET structural foam, PMI structural foam, PVC structural foam, aluminum honeycomb, or aramid honeycomb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123443426.9U CN217086775U (en) | 2021-12-31 | 2021-12-31 | Metal and combined material combined type battery pack tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123443426.9U CN217086775U (en) | 2021-12-31 | 2021-12-31 | Metal and combined material combined type battery pack tray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217086775U true CN217086775U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123443426.9U Active CN217086775U (en) | 2021-12-31 | 2021-12-31 | Metal and combined material combined type battery pack tray |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207550A (en) * | 2022-09-13 | 2022-10-18 | 江苏时代新能源科技有限公司 | Battery box, battery and electric equipment |
| CN117134056A (en) * | 2023-10-26 | 2023-11-28 | 杭州卡涞复合材料科技有限公司 | Lower box body of multi-material composite power battery |
-
2021
- 2021-12-31 CN CN202123443426.9U patent/CN217086775U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207550A (en) * | 2022-09-13 | 2022-10-18 | 江苏时代新能源科技有限公司 | Battery box, battery and electric equipment |
| CN117134056A (en) * | 2023-10-26 | 2023-11-28 | 杭州卡涞复合材料科技有限公司 | Lower box body of multi-material composite power battery |
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