CN116130865A - High strength steel battery package shell structure - Google Patents
High strength steel battery package shell structure Download PDFInfo
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- CN116130865A CN116130865A CN202310226938.4A CN202310226938A CN116130865A CN 116130865 A CN116130865 A CN 116130865A CN 202310226938 A CN202310226938 A CN 202310226938A CN 116130865 A CN116130865 A CN 116130865A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 230000000712 assembly Effects 0.000 claims abstract description 26
- 238000000429 assembly Methods 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 230000008093 supporting effect Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application relates to a high strength steel battery shell body structure belongs to auto-parts's technical field, and it includes middle frame roof beam assembly, detachable connection at the upper cover plate of middle frame roof beam assembly upper surface and detachable connection at the lower apron of middle frame roof beam assembly lower surface, middle frame roof beam assembly includes two long roof beam assemblies of mutual parallel arrangement, two short beam assemblies of mutual parallel arrangement and many equidistant intermediate beam assemblies of connecting between two long roof beam assemblies, the relative both ends of long roof beam assembly are connected with one side end that two short beam assemblies are close to each other respectively, the cross-section of long roof beam assembly, the cross-section of short beam assembly and the cross-section of intermediate beam assembly all have a plurality of cavity structures. The battery pack has the advantages of high strength, high rigidity and small mass, and the cross section shape is optimized and the wall thickness of the plate is reduced on the premise of ensuring the strength and other performances of the battery pack shell, so that the weight of the battery pack shell is reduced.
Description
Technical Field
The application relates to the technical field of automobile parts, in particular to a high-strength steel battery pack shell structure.
Background
In recent years, as driving experiences of drivers increase, awareness of drivers for pursuing safety and performance is becoming stronger. In addition to cruising ability, the safety and stability of an automotive power battery pack are one indicator of great concern to a driver during driving of an automobile; the automobile power battery pack is the only part for providing power energy for the pure electric automobile, and plays a role in: the method comprises the steps of outputting electric energy to the whole vehicle electricity-requiring equipment, wherein the electric energy is provided for a motor to realize driving and power supply of other auxiliary electric appliances; generally, in the whole vehicle running process, the safety of the vehicle power battery pack during operation and the stability during collision are two important indexes for measuring the vehicle performance besides the cruising ability.
The common automobile power battery pack is arranged on the left and right welding longitudinal beams and the front and rear cross beams of the front floor of an automobile through bolts; the automobile power battery is an important safety part on an automobile, once a problem occurs, the automobile can be caused to have serious problems in the running or collision process, so that the existing steel battery pack shell structure mostly adopts the effect of increasing the thickness of a plate to achieve reinforcement.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: the steel battery pack shell has small rigidity and large deformation due to the fact that the thickness of the plate is increased to achieve the reinforcing effect, and the weight of the whole automobile is increased and the energy consumption of the automobile is increased due to the fact that the wall thickness of a common steel plate material used for the steel battery pack shell is large.
Disclosure of Invention
In order to solve the technical problem, the application provides a high-strength steel battery pack shell structure, which has the advantages of high strength, high rigidity and small mass, and optimizes the cross-sectional shape and reduces the wall thickness of a plate on the premise of ensuring the strength and other performances of the battery pack shell, so that the weight of the battery pack shell is reduced.
The application provides a high strength steel battery shell body structure adopts following technical scheme:
the utility model provides a high strength steel battery shell body structure, includes middle frame roof beam assembly, can dismantle the upper cover plate of connection at middle frame roof beam assembly upper surface and can dismantle the lower cover plate of connection at middle frame roof beam assembly lower surface, middle frame roof beam assembly includes two long roof beam assemblies of mutual parallel arrangement, two short roof beam assemblies of mutual parallel arrangement and many equidistant intermediate beam assemblies of connecting between two long roof beam assemblies, the relative both ends of long roof beam assembly are connected with one side end connection that two short roof beam assemblies are close to each other respectively, the cross section of long roof beam assembly, the cross section of short roof beam assembly and the cross section of intermediate beam assembly all have a plurality of cavity structures.
Through adopting above-mentioned technical scheme, the cross section of long roof beam assembly, the cross section of short roof beam assembly and the cross section of middle crossbeam assembly all have a plurality of cavity structures, can optimize the cross section shape of middle frame roof beam assembly and reduce the panel wall thickness of middle frame roof beam assembly under the prerequisite of guaranteeing middle frame roof beam assembly intensity etc. performance for middle frame roof beam assembly can satisfy corresponding mode, intensity and rigidity requirement, thereby lighten the weight of battery package casing.
Optionally, the long roof beam assembly includes girder assembly, level setting closing plate on girder assembly bottom surface, sets up the auxiliary girder that is close to middle crossbeam assembly one side at the girder assembly and sets up the crossbeam mount pad that keeps away from girder assembly one side at the auxiliary girder, the girder assembly includes long connecting plate and two sets of long connection structure that set up on long connecting plate from top to bottom symmetry, the vertical side and the two long connection structure fixed connection of auxiliary girder, the horizontal side of auxiliary girder is provided with the kink, the crossbeam mount pad includes a layer board and parcel board, the horizontal side edge of a layer board and the vertical side top surface fixed connection of parcel board, the horizontal side bottom surface of auxiliary girder and the equal fixed connection of the bottom surface of long connecting plate are on the top surface of closing plate, the horizontal side bottom surface of a layer board and the kink top surface fixed connection of auxiliary girder, the vertical side and the vertical side fixed connection of auxiliary girder of a layer board.
Through adopting above-mentioned technical scheme, under girder assembly, crossbeam mount pad, auxiliary girder, closing plate and long connection structure's joint action for the cross-section of long beam assembly has six cavity structures, thereby when optimizing the cross-section shape of long beam assembly, reduced the panel wall thickness of long beam assembly, and then the performance requirements such as the intensity, rigidity and the modal of utilizing the material promotion long beam assembly that can be better.
Optionally, the short beam assembly is including the short beam body and set up the module mount pad that is close to middle crossbeam assembly one side at the short beam body, the short beam body includes short connecting plate, gusset plate and two sets of short connection structure that set up on short connecting plate of symmetry from top to bottom, the gusset plate is located the opening part of short connecting plate, just the bottom surface of gusset plate and the interior bottom wall fixed connection of short connecting plate, the module mount pad sets up the one side that is close to middle crossbeam assembly at the gusset plate, the module mount pad includes loading board and backup pad, the horizontal side edge of loading board and the vertical side top surface fixed connection of backup pad, the vertical side of loading board and the one side fixed connection that the gusset plate kept away from short connection structure.
Through adopting above-mentioned technical scheme, under the combined action of short connecting plate, gusset plate and two sets of short connection structure for the cross-section of short beam body has three cavity structures, thereby when optimizing the cross-sectional shape of short beam assembly, reduced the panel wall thickness of short beam assembly, and then the performance requirements such as the intensity, rigidity and the modal of material promotion short beam assembly that can be better.
Optionally, the reinforcing plate is close to one side both ends of module mount pad respectively with two long beam assembly's tip fixed connection, the relative both ends fixed connection of module mount pad is between the vertical side of two parcel boards, just the bottom surface of module mount pad is supported to the horizontal side top surface of parcel board.
By adopting the technical scheme, the fixed connection between the long beam assembly and the short beam assembly is realized.
Optionally, the bottom surface of middle crossbeam assembly is supported to the horizontal side top surface of support board, the opposite both ends of middle crossbeam assembly are respectively with the vertical side fixed connection of two layer boards.
By adopting the technical scheme, the transverse torsion and the front collision performance of the middle frame beam assembly are enhanced by the arrangement of the middle beam assembly, and a firm supporting and reinforcing effect is provided for the middle frame beam assembly.
Optionally, the middle crossbeam assembly includes last terrace die group stiffening beam and lower die group stiffening beam that can dismantle the connection, integrated into one piece has the convex part on the last terrace die group stiffening beam, integrated into one piece has the concave part down on the lower die group stiffening beam, goes up convex part and concave part position correspondence and relative setting down.
Through adopting above-mentioned technical scheme, under the combined action of last convex part and concave part for the cross-section of middle crossbeam assembly is closed cavity, thereby when optimizing the cross-section shape of middle crossbeam assembly, reduced the panel wall thickness of middle crossbeam assembly, and then performance requirements such as intensity, rigidity and the modal of utilizing the material to promote middle crossbeam assembly that can be better.
Optionally, the mounting hole has been seted up around the upper cover plate, the top surface of girder assembly and the top surface of shortbeam body all rivet and have last riveting nut, go up the mounting hole department and wear to be equipped with last riveting nut threaded connection's last locking bolt, open around the lower apron has down the mounting hole, the bottom surface of girder assembly and the bottom surface of shortbeam body all rivet and have lower riveting nut, lower mounting hole department wear to be equipped with lower riveting nut threaded connection's lower locking bolt.
Through adopting above-mentioned technical scheme, pass last mounting hole and last riveting nut threaded connection with last locking bolt, lower locking bolt passes down mounting hole and lower riveting nut threaded connection, realizes that upper cover plate and lower cover plate respectively with middle frame roof beam assembly's detachable connection.
Optionally, the short beam assembly further comprises two sealing blanking caps welded and fixed at openings at two ends of the short beam body respectively.
Through adopting above-mentioned technical scheme, the setting of sealed blanking cover is used for carrying out the shutoff to the inside of lintel body to play the effect of protection.
Optionally, the outside of long roof beam assembly and short roof beam assembly all fixedly connected with installing support.
Through adopting above-mentioned technical scheme, the setting of installing support is convenient for the installation of middle frame roof beam assembly.
Optionally, the installing support is including setting up the installed part in the middle frame roof beam assembly outside, setting up stamping workpiece on the installed part and connect the sleeve of mounting bracket and stamping workpiece, the stamping workpiece is located the link, the horizontal side of link and the horizontal side of stamping workpiece are worn to establish to telescopic vertical side is fixed.
Through adopting above-mentioned technical scheme, when setting up optimization installing support's cross-sectional shape of installed part, stamping workpiece and telescopic, reduced the panel wall thickness of installing support, and then the performance requirements such as the intensity, rigidity and the mode of utilizing the material promotion installing support that can be better.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the section of the long beam assembly, the section of the short beam assembly and the section of the middle beam assembly are provided with a plurality of cavity structures, so that the section shape of the middle beam assembly can be optimized and the wall thickness of a plate of the middle beam assembly can be reduced on the premise of ensuring the strength and other performances of the middle beam assembly, the middle beam assembly can meet the corresponding requirements of the mode, the strength and the rigidity, and the weight of a battery pack shell is reduced;
2. under the combined action of the main beam assembly, the cross beam mounting seat, the auxiliary beam, the sealing plate and the long connecting structure, the section of the long beam assembly is provided with six cavity structures, so that the section shape of the long beam assembly is optimized, the wall thickness of a plate of the long beam assembly is reduced, and the performance requirements of the strength, the rigidity, the mode and the like of the long beam assembly can be improved by utilizing materials better.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present application.
Fig. 2 is an exploded view of the present application.
Fig. 3 is an enlarged partial schematic view of the portion a in fig. 2.
Fig. 4 is an exploded view of the long beam assembly of the present application.
Fig. 5 is a partially enlarged schematic view of the portion B in fig. 2.
Fig. 6 is a schematic structural view of a short beam assembly of the present application.
Fig. 7 is an exploded view of the center sill assembly of the present application.
Reference numerals illustrate: 1. an upper cover plate; 11. an upper mounting hole; 12. a riveting nut is arranged; 13. an upper locking bolt; 2. a lower cover plate; 3. a long beam assembly; 31. a main beam assembly; 311. a long connecting plate; 312. a long extension plate; 313. a long sloping plate; 314. a long fixing plate; 32. a sealing plate; 33. an auxiliary beam; 331. a bending part; 34. a beam mounting seat; 341. a supporting plate; 342. a wrapping plate; 4. a short beam assembly; 41. a short beam body; 411. a short connecting plate; 412. a reinforcing plate; 413. a short extension plate; 414. a short sloping plate; 415. a short fixing plate; 42. a module mounting base; 421. a carrying plate; 422. a support plate; 43. a sealing cap; 5. a middle beam assembly; 51. a reinforcing beam of the upper male die set; 511. an upper convex part; 52. a lower die set reinforcing beam; 521. a concave portion; 522. a fixing nut; 6. a mounting bracket; 61. a mounting member; 611. a connecting frame; 612. a stop block; 62. stamping parts; 63. a sleeve.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
The embodiment of the application discloses a high-strength steel battery pack shell structure. Referring to fig. 1 and 2, the high-strength steel battery pack case structure includes a middle frame beam assembly, an upper cover plate 1 detachably coupled to an upper surface of the middle frame beam assembly, and a lower cover plate 2 detachably coupled to a lower surface of the middle frame beam assembly; the middle frame beam assembly, the upper cover plate 1 and the lower cover plate 2 are all of steel structures, and the upper cover plate 1 and the lower cover plate 2 are respectively connected to the middle frame beam assembly, so that the upper cover plate 1, the middle frame beam assembly and the lower cover plate 2 form a sealed frame structure together.
The middle frame beam assembly is used as a supporting structure of battery pack components such as a module, a BMS module and a cooling module, and in order to enable the middle frame beam assembly to meet corresponding requirements of mode, strength and rigidity, the cross section shape of the middle frame beam assembly is optimized and the wall thickness of a plate of the middle frame beam assembly is reduced on the premise that the strength and other performances of the middle frame beam assembly are guaranteed.
Referring to fig. 2 and 3, in order to be able to optimize the cross-sectional shape of the middle frame beam assembly and reduce the wall thickness of the plate material of the middle frame beam assembly, the middle frame beam assembly includes two long beam assemblies 3 arranged in parallel, two short beam assemblies 4 arranged in parallel, and a plurality of middle beam assemblies 5 connected between the two long beam assemblies 3 at equal intervals; the long beam assembly 3 is vertical to the short beam assembly 4, and the opposite ends of the long beam assembly 3 are respectively connected with the end parts of one side, close to the two short beam assemblies 4, of each other; the length direction of the middle beam assembly 5 is consistent with the length direction of the short beam assembly 4. The cross section of the long beam assembly 3, the cross section of the short beam assembly 4 and the cross section of the middle beam assembly 5 all have a plurality of cavity structures.
Referring to fig. 3 and 4, the two long beam assemblies 3 are a left side beam assembly and a right side beam assembly of the middle frame beam assembly, respectively, and the two short beam assemblies 4 are a front side beam assembly and a rear side beam assembly of the middle frame beam assembly, respectively; in order to facilitate the installation of the middle frame beam assembly, the outer sides of the left side beam assembly, the right side beam assembly, the front side beam assembly and the rear side beam assembly are fixedly connected with mounting brackets 6. The number of the mounting brackets 6 on the left side beam assembly is five, and the number of the mounting brackets 6 on the right side beam assembly is consistent with and corresponds to the number of the mounting brackets 6 on the left side beam assembly one by one; the number of the mounting brackets 6 on the rear side beam assembly is one, and the number of the mounting brackets 6 on the front side beam assembly is two.
Referring to fig. 3 and 4, the mounting bracket 6 includes a mounting member 61 provided outside the center sill assembly, a stamping 62 provided on the mounting member 61, and a sleeve 63 connecting the mounting bracket and the stamping 62; the mounting piece 61 comprises a connecting frame 611 which is welded and fixed on the outer side of the middle frame beam assembly and has an inverted L-shaped section, and two stop blocks 612 respectively arranged on two sides of the connecting frame 611; the cross section of the stop block 612 is in a right trapezoid shape, and the right angle part of the stop block 612 is fixedly connected with the edge of the bending part of the connecting frame 611; stamping 62 is positioned within connecting frame 611 and between stops 612. The cross section of the sleeve 63 is T-shaped; the vertical side of the sleeve 63 is fixedly threaded through the horizontal side of the connecting frame 611 and the horizontal side of the stamping 62.
Referring to fig. 3 and 4, the long beam assembly 3 includes a main beam assembly 31, and the main beam assembly 31 includes a long connection plate 311 and two sets of long connection structures symmetrically disposed on the long connection plate 311. The long connection plate 311 is a U-shaped plate with its opening facing the middle beam assembly 5, and in this embodiment, since the structures of the two sets of long connection structures are identical, the long connection structure located above is described as an example in this embodiment. The long connection structure located above includes a long extension plate 312, a long inclined plate 313, and a long fixing plate 314, which have a length identical to that of the long connection plate 311; the long extension plate 312 is positioned at the opening of the long connecting plate 311, the long extension plate 312 and the long fixing plate 314 are parallel to each other, and the long extension plate 312 is positioned above the long fixing plate 314; the long inclined plate 313 is provided between the long extension plate 312 and the long fixed plate 314, and the inclined direction of the long inclined plate 313 is inclined downward in a direction away from the long extension plate 312; the top surface of the long inclined plate 313 is welded and fixed with the bottom surface of the long extension plate 312, and the top surface of the long extension plate 312 is welded and fixed with the inner top wall of the long connecting plate 311; the bottom surface of long sloping plate 313 is welded and fixed with the top surface of long fixed plate 314, and the side of long fixed plate 314 that keeps away from long sloping plate 313 is welded and fixed at the inside wall of long connecting plate 311.
Referring to fig. 3 and 4, the long beam assembly 3 further includes a sealing plate 32 horizontally disposed on the bottom surface of the long connection plate 311, a sub-beam 33 disposed on a side of the long extension plate 312 near the middle beam assembly 5, and a beam mounting seat 34 disposed on a side of the sub-beam 33 remote from the long extension plate 312; the cross section of the auxiliary beam 33 is L-shaped, and the horizontal side of the auxiliary beam 33 extends in the direction close to the middle beam assembly 5; the vertical side of the auxiliary beam 33 is welded and fixed with the two long extension plates 312, the horizontal side of the auxiliary beam 33 is stamped and formed with a bending part 331, and the section of the bending part 331 is isosceles trapezoid.
The beam mount 34 includes a support plate 341 and a wrap plate 342; the cross sections of the supporting plate 341 and the wrapping plate 342 are L-shaped, and the horizontal sides of the supporting plate 341 and the wrapping plate 342 extend towards the direction close to the middle beam assembly 5; the horizontal side edges of the supporting plates 341 are welded to the vertical side top surfaces of the wrapping plates 342, and the horizontal side bottom surfaces of the wrapping plates 342, the horizontal side bottom surfaces of the auxiliary beams 33, and the bottom surfaces of the long connecting plates 311 are welded to the top surfaces of the sealing plates 32. The horizontal side bottom surface of the supporting plate 341 is welded and fixed to the top surface of the bending portion 331 of the sub beam 33, and the vertical side of the supporting plate 341 is welded and fixed to the vertical side of the sub beam 33.
Under the combined action of the main beam assembly 31, the cross beam mounting seat 34, the auxiliary beam 33, the sealing plate 32 and the long connecting structure, the section of the long beam assembly 3 is provided with six cavity structures, so that the section shape of the long beam assembly 3 is optimized, the wall thickness of the plate of the long beam assembly 3 is reduced, and the performance requirements of the long beam assembly 3, such as strength, rigidity, mode and the like, can be better improved by utilizing materials.
Referring to fig. 5 and 6, the short beam assembly 4 includes a short beam body 41, a module mounting seat 42 disposed on one side of the short beam body 41 near the middle beam assembly 5, and two sealing caps 43 welded and fixed at openings at both ends of the short beam body 41; opposite ends of the long beam assembly 3 are respectively connected with one side end portion of the two short beam bodies 41, which are close to each other, and opposite ends of the module mounting seat 42 are respectively connected with one side of the two cross beam mounting seats 34, which are close to each other.
Referring to fig. 5 and 6, the short beam body 41 includes a short connection plate 411, a reinforcement plate 412, and two sets of short connection structures symmetrically disposed on the short connection plate 411 up and down; the cross section of the short connecting plate 411 is U-shaped, the opening of the short connecting plate faces the module mounting seat 42, the reinforcing plate 412 is positioned at the opening of the short connecting plate 411, and the bottom surface of the reinforcing plate 412 is welded and fixed with the inner bottom wall of the short connecting plate 411; the top surface of the reinforcing plate 412 is located below the inner top wall of the short connecting plate 411, and the module mounting seat 42 is disposed on the side of the reinforcing plate 412 close to the middle beam assembly 5.
In the present embodiment, since the structures of the two groups of short connection structures are identical, the short connection structure located above is taken as an example for explanation in the present embodiment; the short connection structure located above includes a short extension plate 413, a short inclined plate 414, and a short fixing plate 415, which have a length identical to that of the short connection plate 411; the short extension plate 413 is positioned at the opening of the short connection plate 411, the short extension plate 413 and the short fixing plate 415 are parallel to each other, and the short extension plate 413 is positioned above the short fixing plate 415; the short inclined plate 414 is provided between the short extension plate 413 and the short fixed plate 415, and the inclined direction of the short inclined plate 414 is inclined downward in a direction away from the short extension plate 413; the top surface of the short sloping plate 414 is welded and fixed with the bottom surface of the short extending plate 413, and the top surface of the short extending plate 413 is welded and fixed with the inner top wall of the short connecting plate 411; the bottom surface of short swash plate 414 is welded to the top surface of short fixed plate 415, and the side of short fixed plate 415 remote from short swash plate 414 is welded to the inner side wall of short connecting plate 411. One side of the reinforcing plate 412 far away from the module mounting seat 42 is welded and fixed with one side of the two short extension plates 413 close to the module mounting seat 42; the bottom surface of the short extension plate 413 located below has a gap with the inner bottom wall of the connection plate.
Referring to fig. 5 and 6, the length of the module mounting seat 42 is smaller than that of the reinforcing plate 412, and two ends of one side of the reinforcing plate 412, which is close to the module mounting seat 42, are fixedly connected with the ends of the two long beam assemblies 3 respectively; opposite ends of the module mounting base 42 are fixedly connected between the vertical sides of the two wrapping plates 342, and the top surfaces of the horizontal sides of the wrapping plates 342 rest on the bottom surfaces of the module mounting base 42.
Referring to fig. 5 and 6, the module mounting base 42 includes a bearing plate 421 and a support plate 422, the bearing plate 421 and the support plate 422 each have an L-shaped cross section, and the horizontal side of the bearing plate 421 and the horizontal side of the support plate 422 each extend in a direction approaching the middle beam assembly 5; the horizontal side edge of the bearing plate 421 is welded and fixed with the top surface of the vertical side of the supporting plate 422, and the vertical side of the bearing plate 421 is welded and fixed with the side of the reinforcing plate 412 away from the short extension plate 413; the horizontal side bottom surface of the support plate 422 is welded to the horizontal side top surface of the wrap plate 342.
Under the combined action of the short connecting plate 411, the reinforcing plate 412 and the two groups of short connecting structures, the section of the short beam body 41 is provided with three cavity structures, so that the section shape of the short beam assembly 4 is optimized, the wall thickness of the plate of the short beam assembly 4 is reduced, and the performance requirements of the short beam assembly 4, such as strength, rigidity, mode and the like, can be better improved by utilizing materials.
Referring to fig. 5 and 7, the horizontal side top surface of the supporting plate 341 supports the bottom surface of the middle beam assembly 5, and opposite ends of the middle beam assembly 5 are fixedly connected with the vertical sides of the two supporting plates 341, respectively; the middle beam assembly 5 comprises an upper punch set reinforcing beam 51 and a lower die set reinforcing beam 52 which are detachably connected; the upper punch set reinforcement beam 51 is located above the lower die set reinforcement beam 52, and the horizontal side top surface of the holder plate 341 holds the bottom surface of the lower die set reinforcement beam 52. The upper punch set reinforcing beam 51 and the lower die set reinforcing beam 52 are formed by stamping steel plates, so that an upper convex part 511 is integrally formed on the upper punch set reinforcing beam 51, a lower concave part 521 is integrally formed on the lower die set reinforcing beam 52, and the upper convex part 511 and the lower concave part 521 are correspondingly and oppositely arranged, so that a closed cavity is formed between the upper convex part 511 and the lower concave part 521.
Referring to fig. 5 and 7, a plurality of fixing nuts 522 are welded and fixed on the lower die set reinforcing beam 52, the plurality of fixing nuts 522 are arranged at intervals on both sides of the lower concave portion 521, a plurality of fixing holes are formed on the upper die set reinforcing beam 51, and the number of the fixing holes is consistent with that of the fixing nuts 522 and corresponds to that of the fixing nuts 522 one by one; a fixing bolt (not shown) in threaded connection with the fixing nut 522 is disposed through each fixing hole, so that the upper punch set reinforcing beam 51 and the lower die set reinforcing beam 52 can be detachably connected under the connection action of the fixing bolt and the fixing nut 522. In this embodiment, the middle beam assemblies 5 are provided with three groups, and the three groups of middle beam assemblies 5 are distributed at equal intervals along the length direction of the long beam assembly 3.
Under the combined action of the upper convex part 511 and the lower concave part 521, the cross section of the middle beam assembly 5 is a closed cavity, so that the cross section shape of the middle beam assembly 5 is optimized, the wall thickness of the plate of the middle beam assembly 5 is reduced, and the performance requirements of strength, rigidity, modes and the like of the middle beam assembly 5 can be improved by using materials better. At the same time, the intermediate beam assembly 5 also can strengthen the transverse torsion and frontal collision performance of the intermediate frame beam assembly and provide firm support strengthening for the intermediate frame beam assembly.
Referring to fig. 2 and 6, the upper cover plate 1 and the lower cover plate 2 are identical in structure, and both the upper cover plate 1 and the lower cover plate 2 are formed by stamping a high-strength steel plate; the surfaces of the upper cover plate 1 and the lower cover plate 2 are provided with reinforcing ribs (not shown in the figure) which are uniformly distributed, a plurality of upper mounting holes 11 which are uniformly distributed are formed in the periphery of the upper cover plate 1, a plurality of upper riveting nuts 12 are riveted on the top surface of the long connecting plate 311 and the top surface of the short connecting plate 411, the number of the upper riveting nuts 12 is consistent with the number of the upper mounting holes 11 and corresponds to the number of the upper mounting holes 11 one by one, and an upper locking bolt 13 which is in threaded connection with the upper riveting nuts 12 is penetrated at each upper mounting hole 11. A plurality of evenly distributed lower mounting holes are formed in the periphery of the lower cover plate 2, a plurality of lower riveting nuts are riveted on the bottom surface of the long connecting plate 311 and the bottom surface of the short connecting plate 411, the lower riveting nuts on the bottom surface of the long connecting plate 311 penetrate through the sealing plate 32 to be fixedly connected with the bottom surface of the long connecting plate 311, the number of the lower riveting nuts is consistent with the number of the lower mounting holes and corresponds to the number of the lower mounting holes one by one, and lower locking bolts in threaded connection with the lower riveting nuts are respectively arranged at each lower mounting hole in a penetrating mode. The arrangement of the plurality of upper mounting holes 11 ensures the connection strength of the upper cover plate 1, and the arrangement of the plurality of lower mounting holes ensures the connection strength of the lower cover plate 2.
The implementation principle of the high-strength steel battery pack shell structure is as follows: the automobile high-strength steel battery pack shell structure has the advantages of high strength, high rigidity and small mass, and the cross section shape is optimized and the wall thickness of the plate is reduced on the premise that the performances such as the strength of the battery pack shell are guaranteed, so that the weight of the battery pack shell is reduced.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A high strength steel battery package shell structure, its characterized in that: including middle frame roof beam assembly, detachable connection upper cover plate (1) at middle frame roof beam assembly upper surface and detachable connection lower cover plate (2) at middle frame roof beam assembly lower surface, middle frame roof beam assembly includes two long roof beam assemblies (3) of mutual parallel arrangement, two short roof beam assemblies (4) of mutual parallel arrangement and many equidistant intermediate beam assemblies (5) of connecting between two long roof beam assemblies (3), the relative both ends of long roof beam assembly (3) are connected with one side end that two short roof beam assemblies (4) are close to each other respectively, the cross section of long roof beam assembly (3), the cross section of short roof beam assembly (4) and the cross section of middle roof beam assembly (5) all have a plurality of cavity structures.
2. The high strength steel battery pack case structure according to claim 1, wherein: the long beam assembly (3) comprises a main beam assembly (31), a sealing plate (32) horizontally arranged on the bottom surface of the main beam assembly (31), an auxiliary beam (33) arranged on one side of the main beam assembly (31) close to the middle beam assembly (5) and a beam mounting seat (34) arranged on one side of the auxiliary beam (33) away from the main beam assembly (31), the main beam assembly (31) comprises a long connecting plate (311) and two groups of long connecting structures which are vertically symmetrically arranged on the long connecting plate (311), the vertical side of the auxiliary beam (33) is fixedly connected with the two long connecting structures, the horizontal side of the auxiliary beam (33) is provided with a bending part (331), the beam mounting seat (34) comprises a supporting plate (341) and a wrapping plate (342), the horizontal side edge of the supporting plate (341) is fixedly connected with the vertical side top surface of the wrapping plate (342), the horizontal side bottom surface of the auxiliary beam (33) and the bottom surface of the long connecting plate (311) are fixedly connected with the top surface of the sealing plate (311), and the horizontal side supporting plate (341) is fixedly connected with the vertical side of the supporting plate (331).
3. The high strength steel battery pack case structure according to claim 2, wherein: the utility model provides a short beam assembly (4) including short beam body (41) and set up module mount pad (42) in short beam body (41) near middle crossbeam assembly (5) one side, short beam body (41) are including short connecting plate (411), gusset plate (412) and two sets of short connection structure of symmetry setting on short connecting plate (411) from top to bottom, gusset plate (412) are located the opening part of short connecting plate (411), just the bottom surface of gusset plate (412) and the interior bottom wall fixed connection of short connecting plate (411), module mount pad (42) set up in one side that gusset plate (412) are close to middle crossbeam assembly (5), module mount pad (42) include loading board (421) and backup pad (422), the horizontal side edge of loading board (421) and the vertical side top surface fixed connection of backup pad (422), the vertical side of loading board (421) and gusset plate (412) keep away from one side fixed connection of short connection structure.
4. A high strength steel battery pack housing structure as claimed in claim 3, wherein: the reinforcing plate (412) is close to one side both ends of module mount pad (42) and is fixedly connected with the tip fixed connection of two long roof beam assemblies (3) respectively, the relative both ends fixed connection of module mount pad (42) is between the vertical side of two parcel boards (342), just the bottom surface of horizontal side top surface support module mount pad (42) of parcel board (342).
5. A high strength steel battery pack housing structure as claimed in claim 3, wherein: the bottom surface of middle crossbeam assembly (5) is supported to the horizontal side top surface of support board (341), the opposite both ends of middle crossbeam assembly (5) are respectively with the vertical side fixed connection of two layer boards (341).
6. The high strength steel battery pack housing structure of claim 5, wherein: the middle beam assembly (5) comprises an upper male die group reinforcing beam (51) and a lower female die group reinforcing beam (52) which are detachably connected, an upper convex part (511) is integrally formed on the upper male die group reinforcing beam (51), a lower concave part (521) is integrally formed on the lower female die group reinforcing beam (52), and the positions of the upper convex part (511) and the lower concave part (521) are correspondingly and oppositely arranged.
7. A high strength steel battery pack housing structure as claimed in claim 3, wherein: the upper cover plate (1) is provided with an upper mounting hole (11) around, the top surface of the main beam assembly (31) and the top surface of the short beam body (41) are both riveted with an upper riveting nut (12), an upper locking bolt (13) in threaded connection with the upper riveting nut (12) is arranged at the upper mounting hole (11), the periphery of the lower cover plate (2) is provided with a lower mounting hole, the bottom surface of the main beam assembly (31) and the bottom surface of the short beam body (41) are both riveted with a lower riveting nut, and a lower locking bolt in threaded connection with the lower riveting nut is arranged at the lower mounting hole.
8. A high strength steel battery pack housing structure as claimed in claim 3, wherein: the short beam assembly (4) further comprises two sealing blanking caps (43) which are welded and fixed at openings at two ends of the short beam body (41) respectively.
9. The high strength steel battery pack case structure according to claim 1, wherein: the outer sides of the long beam assembly (3) and the short beam assembly (4) are fixedly connected with mounting brackets (6).
10. The high strength steel battery pack case structure according to claim 9, wherein: the mounting bracket (6) comprises a mounting piece (61) arranged on the outer side of the middle frame beam assembly, a stamping part (62) arranged on the mounting piece (61) and a sleeve (63) connected with the mounting frame and the stamping part (62), wherein the stamping part (62) is positioned in the connecting frame (611), and the vertical side of the sleeve (63) is fixedly penetrated with the horizontal side of the connecting frame (611) and the horizontal side of the stamping part (62).
Priority Applications (1)
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CN202310226938.4A CN116130865A (en) | 2023-03-06 | 2023-03-06 | High strength steel battery package shell structure |
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CN202310226938.4A CN116130865A (en) | 2023-03-06 | 2023-03-06 | High strength steel battery package shell structure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN118231917A (en) * | 2024-01-18 | 2024-06-21 | 鞍钢股份有限公司 | High strength steel battery package shell structure |
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2023
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118231917A (en) * | 2024-01-18 | 2024-06-21 | 鞍钢股份有限公司 | High strength steel battery package shell structure |
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Application publication date: 20230516 |