CN114132164B - Mounting force transmission structure of vehicle body and battery pack - Google Patents
Mounting force transmission structure of vehicle body and battery pack Download PDFInfo
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- CN114132164B CN114132164B CN202111462101.7A CN202111462101A CN114132164B CN 114132164 B CN114132164 B CN 114132164B CN 202111462101 A CN202111462101 A CN 202111462101A CN 114132164 B CN114132164 B CN 114132164B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 25
- 238000005192 partition Methods 0.000 claims description 178
- 239000002184 metal Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
-
- 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
- H01M50/249—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
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides an installation force transmission structure of a vehicle body and a battery pack, and belongs to the technical field of vehicles. The vehicle side collision safety device solves the problems that in the prior art, safety risks are large when a vehicle collides with the side surface. This installation biography power structure of automobile body and battery package, the automobile body has threshold roof beam, the battery package has casing and threshold lug, installation biography power structure includes threshold roof beam, casing and threshold lug, the threshold lug is located the casing outside and fixed connection on the threshold roof beam, still including fixing the outer crashproof roof beam between threshold lug and casing lateral wall, still be fixed with on the casing lateral wall with outer crashproof roof beam correspond the setting and be located the interior crashproof roof beam of casing, outer crashproof roof beam and interior crashproof roof beam all extend and be hollow structure along the fore-and-aft direction. The installation force transmission structure of the vehicle body and the battery pack can reduce the safety risk during side collision of the vehicle.
Description
Technical Field
The invention belongs to the technical field of vehicles, and relates to an installation force transmission structure of a vehicle body and a battery pack.
Background
The power of the new energy automobile is electric energy, the battery is an important carrier for storing the electric energy, and a plurality of batteries are assembled into a battery pack for installation. Safety performance is an important index of vehicles, and along with popularization of new energy automobiles, requirements on electric safety are higher and higher, and how to improve the safety performance of the new energy automobiles is an important subject.
The car body comprises a floor and threshold beams fixed on two sides of the floor, and the battery pack is fixed below the floor and keeps a certain distance from the threshold beams. With the improvement of the requirements of the endurance mileage of the vehicle, the number of battery packs in the battery pack is continuously increased to improve the battery capacity of the battery pack, so that the volume of the battery pack is increased, the distance between the battery pack and the threshold beam is continuously reduced, and the safety risk of the battery pack and passengers is continuously increased for the side collision of the vehicle.
The Chinese patent literature data discloses that a front collision safety protection mechanism of a miniature electric automobile mounted power battery pack is proposed [ application number: CN201420848739.3; bulletin number: CN 204415513U ], including front bumper, front side rail, front floor cross member, threshold beam, rear floor front cross member, rear floor side rail and rear floor rear cross member, the front floor cross member, threshold beam and rear floor front cross member being contoured to form a battery pack mounting location. The battery pack is arranged in the battery pack mounting position, the periphery of a battery pack shell of the battery pack is respectively fixed with the front floor beam, the threshold beam and the rear floor front beam through lifting lugs, and rubber buffer pads are arranged in the lifting lugs. The protection mechanism is used for preventing the front collision, and the safety performance of the side collision is still to be improved.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art, and provides an installation force transmission structure of a vehicle body and a battery pack, which solves the technical problems that: how to reduce the safety risk in a side collision.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides an installation biography power structure of automobile body and battery package, the automobile body has threshold roof beam, and the battery package has casing and threshold lug, and the installation biography power structure of automobile body and battery package includes threshold roof beam, casing and threshold lug, the threshold lug is located the casing outside and fixed connection on the threshold roof beam, still including fixing the outer crashproof roof beam between threshold lug and casing lateral wall, still be fixed with on the casing lateral wall and correspond the setting with outer crashproof roof beam and be located the interior crashproof roof beam of casing, outer crashproof roof beam and interior crashproof roof beam all extend along fore-and-aft direction and be hollow structure.
During side collision, the collision points of the threshold beams are stressed in a concentrated mode, the threshold beams are fixed with the side wall of the shell after sequentially passing through the threshold lifting lugs and the outer anti-collision beams, the inner anti-collision beams positioned in the shell are further fixed on the side wall of the shell, force and energy transmitted by the threshold lifting lugs firstly act on the outer anti-collision beams, and then are transmitted to the side wall of the shell and the inner anti-collision beams through the outer anti-collision beams, the force and the energy are transmitted in the front-rear direction due to the fact that the outer anti-collision beams extend in the length direction of the outer anti-collision beams, concentrated force and energy are dispersed, the situation that the side wall of the shell is stressed in a concentrated mode to greatly deform to threaten the safety of a battery is avoided, meanwhile, the outer anti-collision beams are of hollow structures, and the outer anti-collision beams can deform and absorb energy. When the outer anti-collision beam can not absorb all energy, the inner anti-collision beam positioned in the shell is fixed on the inner side surface of the side wall of the shell, the inner anti-collision beam and the outer anti-collision beam are correspondingly arranged, and the inner anti-collision beam is of a hollow structure and extends along the front-back direction, so that the inner anti-collision beam can further disperse stress and absorb energy, and the battery in the shell is better protected. Therefore, compared with the prior art, the mounting force transmission structure of the automobile body and the battery pack can better reduce the safety risk during side collision.
In the installation force transmission structure of the automobile body and the battery pack, the outer anti-collision beam comprises an outer main board, the outer main board is sequentially bent to form an outer main sub-board I, an outer main sub-board II, an outer main sub-board III and an outer main sub-board IV, the outer main sub-board I is fixedly connected to the side wall of the shell, the outer main sub-board III is fixedly connected with a threshold lifting lug, the outer main sub-board IV is fixedly connected with the bottom plate of the shell, and the outer main sub-board II, the outer main sub-board III, the outer main sub-board IV and the side wall of the shell enclose an outer cavity.
The structure of outer mainboard forms the "nearly" font structure of putting of similar side, and is located the outer main board of dividing in outer mainboard middle part and with threshold lug fixed connection, outer main board of dividing one and casing lateral wall fixed connection, outer main board of dividing four and casing bottom plate fixed connection, outer main board of dividing two and outer main board of dividing four pairs of threshold lugs form the support, make threshold lug fixed stability on outer crashproof roof beam to make the battery package fixed stability on the automobile body. When force and energy are transmitted to the outer anti-collision beam through the threshold lifting lug, the force and the energy are transmitted to the side wall of the shell in a dispersed manner through the outer main split plate II and the outer main split plate I, and simultaneously transmitted to the bottom plate of the shell in a dispersed manner through the outer main split plate IV, so that the force and the energy are transmitted to more areas of the shell of the battery pack, and the safety risk of side collision is reduced. The outer chamber forms deformation space, so that the outer anti-collision beam can deform and absorb energy, and the impact of side collision to the shell is reduced. In addition, the first outer main division plate is fixedly connected with the side wall of the shell, so that the structural strength of the side wall of the shell can be improved, the fourth outer main division plate is fixedly connected with the bottom plate of the shell, the structural strength of the bottom plate of the shell can be improved, and the safety risk is reduced.
In the mounting force transmission structure of the vehicle body and the battery pack, the outer anti-collision beam further comprises a first outer partition plate fixed in the outer cavity, the first outer partition plate is sequentially bent to form an outer partition plate I, an outer partition plate II and an outer partition plate III, the outer partition plate I is fixedly connected with the outer main partition plate III, and the outer partition plate III is fixedly connected with the side wall of the shell.
Because outer partition board one and outer main partition board three fixed connection, outer partition board three and casing lateral wall fixed connection, first outer baffle also has the supporting role to the threshold lug, further makes the threshold lug fixed stability on outer crashproof roof beam to further make the battery package fixed stability on the automobile body. And when force and energy are transmitted to the outer anti-collision beam through the threshold lifting lug, the force and the energy can be further dispersed to the first outer partition plate, and meanwhile, the outer partition plate III and the outer main partition plate I are respectively fixed in different areas of the side wall of the shell, so that the force and the energy on the side wall of the shell can be further dispersed, and the safety risk of side collision is further reduced. In addition, the first outer partition plate increases the structural strength of the outer main plate and the side wall of the shell, and is beneficial to reducing safety risks.
In the mounting force transmission structure of the vehicle body and the battery pack, the outer separation plate III is located above the outer separation plate II, the upper end of the outer separation plate III is bent to the outer main separation plate III to form the outer separation plate IV, the outer separation plate IV is fixedly connected with the outer main separation plate II, and a first notch is formed between the outer separation plate I and the outer separation plate IV. The outer partition plate IV can increase the structural strength between the outer main partition plate II and the side wall of the shell, and is favorable for reducing the safety risk. The arrangement of the first notch is convenient for the installation and fixation of the first outer partition board, and meanwhile, the structural weakness is reserved at the upper end of the outer anti-collision beam, so that the energy absorption deformation of the anti-collision beam is predictable, and the safety risk is reduced.
In the mounting force transmission structure of the vehicle body and the battery pack, the outer anti-collision beam further comprises a second outer partition plate which is fixed in the outer cavity and positioned below the first outer partition plate, the second outer partition plate is sequentially bent to form an outer partition plate five, an outer partition plate six and an outer partition plate seven, the outer partition plate six is fixedly connected with the outer partition plate two, the outer partition plate five is fixedly connected with the outer main partition plate three, and the outer partition plate seven is fixedly connected with the side wall of the shell.
Because outer partition plate five and outer main partition plate three fixed connection, outer partition plate seven and casing lateral wall fixed connection, second outer baffle also have the supporting role to the threshold lug, further make the threshold lug fixed stable on outer crashproof roof beam to further make the battery package fixed stable on the automobile body. And when force and energy are transmitted to the outer anti-collision beam through the threshold lifting lug, the force and the energy can be further dispersed to the second outer partition plate, and meanwhile, the third outer partition plate, the seventh outer partition plate and the first outer main partition plate are respectively fixed in different areas of the side wall of the shell, so that the force and the energy on the side wall of the shell can be further dispersed, and the safety risk of side collision is further reduced. In addition, the second outer partition plate increases the structural strength of the outer main plate and the side wall of the shell, and is beneficial to reducing safety risks.
In the mounting force transmission structure of the vehicle body and the battery pack, the lower end of the outer partition plate seven is bent outwards to form the outer partition plate eight, the outer partition plate eight is fixedly connected with the outer main partition plate four, and a second notch is formed between the outer partition plate five and the outer partition plate eight. The outer partition plate eight can increase the structural strength between the outer main partition plate four and the side wall of the shell, and is beneficial to reducing the safety risk. The arrangement of the second notch is convenient for the installation and fixation of the second outer partition board, and meanwhile, the lower end of the outer anti-collision beam is provided with a weak structure, so that the energy absorption deformation of the outer anti-collision beam is predictable, and the safety risk is reduced.
In the installation force transmission structure of the automobile body and the battery pack, the inner anti-collision beam comprises an inner main plate, the inner main plate is sequentially bent to form an inner main sub-plate I, an inner main sub-plate II, an inner main sub-plate III and an inner main sub-plate IV, the inner main sub-plate I is fixedly connected with the side wall of the shell, the inner main sub-plate IV is fixedly connected with the bottom plate of the shell, and the inner main sub-plate II, the inner main sub-plate III, the bottom plate of the shell and the side wall of the shell enclose an inner cavity.
The first inner main sub-plate is fixedly connected with the side wall of the shell, the fourth inner main sub-plate is fixedly connected with the bottom plate of the shell, and force and energy can be conducted to the inner anti-collision beam to be dispersed, so that the safety risk is reduced. Meanwhile, the step-shaped structure of the inner main board is stable in structure, has a supporting effect on the side wall of the shell and the bottom plate, protects the battery pack in the shell, and the inner chamber forms a deformation space, so that an accommodating space is provided for deformation of the outer anti-collision beam and the side wall of the shell, and the impact of side collision on the battery pack in the shell is reduced.
In the installation force transmission structure of the vehicle body and the battery pack, the inner partition plate is fixed in the inner cavity, the inner partition plate is sequentially bent to form the inner partition plate I, the inner partition plate II and the inner partition plate III, the inner partition plate I is fixedly connected with the side wall of the shell, the inner partition plate III is fixedly connected with the inner main partition plate III, and the inner partition plate II is close to the bottom plate of the shell. The inner partition plate can increase the structural strength of the inner main plate and the bottom of the shell, and is beneficial to reducing safety risks.
In the installation power transmission structure of the automobile body and the battery pack, the threshold lug comprises a sheet metal plate, the sheet metal plate is sequentially bent to form a fixing part, an upper mounting part, a connecting part and a lower mounting part, the fixing part is fixed on the outer anti-collision beam, the upper mounting part is fixed on the bottom surface of the threshold beam, the connecting part is located below the upper mounting part, the lower mounting part is located between the connecting part and the fixing part, and a reinforcing plate is connected between the lower mounting part and the fixing part. Compared with a lifting lug structure formed by only one plate in the prior art, the invention adopts the threshold lifting lug structure formed by the sheet metal plate formed by bending for many times and the reinforcing plate, has more stable structure and better anti-collision performance, and is beneficial to realizing light-weight arrangement of vehicles.
In the installation force transmission structure of the vehicle body and the battery pack, a structural opening is formed between the lower installation part and the fixing part, the threshold lifting lug is fixedly connected to the threshold beam through a bolt, a sleeve is arranged between the upper installation part and the lower installation part, and the rod part of the bolt passes through the lower installation part, the sleeve, the upper installation part and the bottom wall of the threshold beam and then is in threaded connection with the nut. The light-weight lifting device is favorable for realizing light-weight arrangement, and the threshold lifting lugs and the threshold beam are convenient to install.
Compared with the prior art, the invention has the following advantages:
an outer anti-collision beam is fixed between the side wall of the threshold lifting lug and the side wall of the shell, an inner anti-collision beam corresponding to the outer anti-collision beam and located in the shell is further fixed on the side wall of the shell, and the outer anti-collision beam and the inner anti-collision beam are of hollow structures and extend along the front-back direction, so that the safety risk of side collision can be reduced. In the outer anti-collision beam, the outer main board is in a shape like a Chinese character 'ji', a first outer baffle plate and a second outer baffle plate which are in a shape like a Chinese character '' are fixed in an outer cavity of the outer main board, so that the structure is stable, and force and energy can be transmitted and dispersed to the side wall and the bottom plate of the shell, thereby reducing the safety risk of side collision; the first notch is reserved on the first outer partition plate, and the second notch is reserved on the second outer partition plate, so that the energy absorption deformation of the outer anti-collision beam is predictable, and the safety risk is reduced. In the interior crashproof roof beam, interior mainboard is the step form and fixes between casing bottom plate and lateral wall, and interior baffle fixed stay is between mainboard and casing lateral wall in, stable in structure, dispersible atress and absorption energy reduce the safe risk of side collision.
Drawings
FIG. 1 is a bottom view of a battery pack mounted to a vehicle body;
fig. 2 is a front view of the battery pack mounted on the vehicle body;
FIG. 3 is a partial cross-sectional view taken at A-A of FIG. 2;
fig. 4 is a partial cross-sectional view at B-B in fig. 2.
In the figure, 1, floor; 2. a threshold beam; 3. a housing; 3a, a bottom plate; 3b, sidewalls; 4. a threshold lifting lug; 4a, a sheet metal plate; 4a1, a fixing part; 4a2, an upper mounting portion; 4a3, a connection part; 4a4, a lower mounting part; 4b, reinforcing plates; 4c, a structural opening; 5. an outer anti-collision beam; 6. an outer main board; 6a, an outer main division plate I; 6b, an outer main division plate II; 6c, an outer main division plate III; 6d, an outer main division plate IV; 7. a first outer separator; 7a, an outer partition plate I; 7b, an outer separation plate II; 7c, an outer partition plate III; 7d, an outer partition plate IV; 7e, a first notch; 8. a second outer separator; 8a, an outer partition plate five; 8b, an outer partition plate six; 8c, an outer partition plate seven; 8d, an outer partition plate eight; 8e, a second notch; 9. an outer chamber; 10. an inner anti-collision beam; 11. an inner main board; 11a, an inner main partition board I; 11b, an inner main partition plate II; 11c, an inner main division plate III; 11d, an inner main division plate IV; 12. an inner partition; 12a, an inner partition plate I; 12b, an inner partition plate II; 12c, an inner partition plate III; 13. an inner chamber; 14. a bolt; 15. a sleeve; 16. a nut; 17. a bottom baffle.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1-4, the vehicle body comprises a floor 1, threshold beams 2 are fixedly connected to the left side and the right side of the floor 1 respectively, and the vehicle body is arranged in bilateral symmetry. The battery package is installed in the below of floor 1, and the battery package has casing 3 and threshold lug 4, and threshold lug 4 is located the outside of casing 3. The threshold lifting lugs 4 are provided with a plurality of battery lugs and distributed on the left side and the right side of the shell 3, and batteries are arranged in the shell 3. The housing 3 includes a bottom plate 3a and side walls 3b, the side walls 3b are provided in two and are respectively located on the left and right sides of the bottom plate 3a, the side of the side walls 3b facing the inside of the housing 3 is referred to as the inner side surface of the side walls 3b, and the side of the side walls 3b facing the outside of the housing 3 is referred to as the outer side surface of the side walls 3 b.
The utility model provides an installation biography power structure of automobile body and battery package, includes threshold roof beam 2, casing 3 and threshold lug 4, and threshold lug 4 fixed connection is on threshold roof beam 2. Each threshold beam 2 is connected with two threshold lifting lugs 4, so that sectional arrangement of the threshold lifting lugs 4 is realized, and light weight design of a vehicle is facilitated. The installation of automobile body and battery package passes power structure still includes the outer crashproof roof beam 5 of fixing between threshold lug 4 and casing 3 lateral wall 3b, still is fixed with on the casing 3 lateral wall 3b and corresponds the interior crashproof roof beam 10 that sets up and lie in casing 3 with outer crashproof roof beam 5, and outer crashproof roof beam 5 and interior crashproof roof beam 10 all extend along the fore-and-aft direction and be hollow structure. The outer anti-collision beam 5, the inner anti-collision beam 10 and the shell 3 are fixed through welding, and the threshold lifting lug 4 and the outer anti-collision beam 5 are fixed through welding.
The outer anti-collision beam 5 comprises an outer main board 6, a first outer partition board 7 and a second outer partition board 8, and the outer main board 6, the first outer partition board 7 and the second outer partition board 8 are fixed through welding. The section of the outer main board 6 is in a shape like a Chinese character 'ji', and the outer main board 6 is sequentially bent to form an outer main sub-board I6 a, an outer main sub-board II 6b, an outer main sub-board III 6c and an outer main sub-board IV 6d. The first outer main sub-plate 6a is positioned above the second outer main sub-plate 6b, and the first outer main sub-plate 6a is abutted against and fixedly connected to the outer side surface of the side wall 3b of the shell 3; the third outer main sub-plate 6c is positioned below the second outer main sub-plate 6b, and the threshold lifting lug 4 is abutted against and fixedly connected to the third outer main sub-plate 6 c; the outer main sub-plate four 6d extends below the bottom plate 3a of the housing 3, and one end of the outer main sub-plate four 6d, which is close to the housing 3, is abutted against and fixedly connected to the lower surface of the bottom plate 3a of the housing 3. The outer main sub-plate II 6b, the outer main sub-plate III 6c, the outer main sub-plate IV 6d and the side wall 3b of the shell 3 enclose an outer chamber 9, the first outer partition 7 and the second outer partition 8 are both fixed in the outer chamber 9, and the first outer partition 7 is located above the second outer partition 8. The outer main division plate four 6d is provided with strip-shaped through holes communicated with the outer cavity 9, the through holes are arranged in sequence along the front-rear direction, and the through holes are favorable for the lightweight design of vehicles. A bottom baffle 17 is arranged on the bottom plate 3a of the shell 3, and the bottom baffle 17 is positioned below the outer anti-collision beam 5.
The section of the first outer partition plate 7 is in an inverted shape of , and the first outer partition plate 7 is sequentially bent to form an outer partition plate I7 a, an outer partition plate II 7b and an outer partition plate III 7c, wherein the outer partition plate I7 a and the outer partition plate III 7c are positioned above the outer partition plate II 7 b. The first outer partition plate 7a is abutted against and fixedly connected with the third outer main partition plate 6c, and the third outer partition plate 7c is abutted against and fixedly connected with the outer side face of the side wall 3b of the shell 3. The upper end of the outer partition plate III 7c is bent towards the outer main partition plate III 6c to form an outer partition plate IV 7d, the outer partition plate IV 7d is fixedly connected with the outer main partition plate II 6b, and a first notch 7e is formed between the outer partition plate I7 a and the outer partition plate IV 7 d.
The section of the second outer partition plate 8 is , and the second outer partition plate 8 is sequentially bent to form an outer partition plate five 8a, an outer partition plate six 8b and an outer partition plate seven 8c, wherein the outer partition plate five 8a and the outer partition plate seven 8c are located below the outer partition plate six 8 b. The outer partition plate six 8b is positioned below the outer partition plate two 7b, the outer partition plate six 8b is abutted and fixed with the outer partition plate two 7b, the outer partition plate five 8a is abutted and fixedly connected to the outer main partition plate three 6c, and the outer partition plate seven 8c is abutted and fixedly connected to the outer side face of the side wall 3b of the shell 3. The lower end of the outer partition plate seven 8c is bent towards the outer main partition plate three 6c to form an outer partition plate eight 8d, the outer partition plate eight 8d is fixedly connected with the outer main partition plate four 6d, and a second notch 8e is formed between the outer partition plate five 8a and the outer partition plate eight 8 d.
The inner impact beam 10 includes an inner main plate 11 and an inner partition plate 12, and the inner main plate 11 and the inner partition plate 12 are fixed by welding. The inner main plate 11 is sequentially bent to form an inner main sub-plate 11a, an inner main sub-plate 11b, an inner main sub-plate three 11c and an inner main sub-plate four 11d. The first inner main sub-plate 11a is positioned above the second inner main sub-plate 11b, and the first inner main sub-plate 11a is abutted against and fixedly connected to the inner side surface of the side wall 3b of the shell 3; the inner main sub-plate 11a is arranged corresponding to the outer main sub-plate 6a for better force and energy transfer, while also increasing the structural strength of the side wall 3b of the housing 3. The inner main sub-plate III 11c is positioned below the inner main sub-plate II 11b, and the inner main sub-plate IV 11d is abutted against and fixedly connected to the upper surface of the bottom plate 3a of the shell 3; the inner main sub-plate four 11d is arranged corresponding to the outer main sub-plate four 6d so as to better transmit force and energy, and the structural strength of the bottom plate 3a of the shell 3 is also increased. The inner main sub-plate II 11b, the inner main sub-plate III 11c, the bottom plate 3a of the housing 3 and the side wall 3b of the housing 3 enclose an inner chamber 13, and the inner partition 12 is fixedly connected in the inner chamber 13. The inner separator 12 is sequentially folded to form an inner separator first 12a, an inner separator second 12b and an inner separator third 12c. The first inner partition plate 12a is abutted against and fixedly connected to the inner side face of the side wall 3b of the shell 3, and the first inner partition plate 12a corresponds to the positions of the third outer partition plate 7c and the seventh outer partition plate 8c, so that the structural strength of the side wall 3b of the shell 3 is improved; the inner partition plate III 12c is abutted against and fixedly connected with the inner main partition plate III 11 c. The first inner partition plate 12a and the third inner partition plate 12c are located above the second inner partition plate 12b, and the second inner partition plate 12b is close to the bottom plate 3a of the housing 3.
The threshold lug 4 includes sheet metal plate 4a, and threshold lug 4 passes through welded fastening with outer crashproof roof beam 5. The sheet metal plate 4a is bent in order to form a fixing portion 4a1, an upper mounting portion 4a2, a connecting portion 4a3, and a lower mounting portion 4a4. The fixing portion 4a1 is abutted against and fixed to the outer side face of the outer main sub-plate three 6c, the upper mounting portion 4a2 is abutted against and fixed to the bottom face of the threshold beam 2, the connecting portion 4a3 is located below the upper mounting portion 4a2, and the lower mounting portion 4a4 is located between the connecting portion 4a3 and the fixing portion 4a 1. The lower end of the fixing portion 4a1 protrudes downward from the lower mounting portion 4a4, and a reinforcing plate 4b is fixedly connected between the outer end of the lower mounting portion 4a4 and the lower end of the fixing portion 4a1, and a structural opening 4c is formed between the inner end of the lower mounting portion 4a4 and the fixing portion 4a 1. The threshold lifting lug 4 is fixedly connected to the threshold beam 2 through a bolt 14, a sleeve 15 is arranged between the upper mounting part 4a2 and the lower mounting part 4a4, and the rod part of the bolt 14 passes through the lower mounting part 4a4, the sleeve 15, the upper mounting part 4a2 and the bottom wall of the threshold beam 2 and then is in threaded connection with a nut 16. Two, three or four bolts 14 are arranged on one threshold lifting lug 4, so that the battery pack is fixed and stable on the vehicle body. The upper end of the threshold lifting lug 4 is higher than the outer anti-collision beam 5, and the inner side part of the threshold lifting lug 4 protrudes out of the threshold beam 2. A gap is formed between the upper end of the threshold lifting lug 4 and the side wall 3b of the shell 3, a gap is formed between the threshold beam 2 and the shell 3, and a deformation space is reserved, so that safety risks are reduced.
When a side collision occurs, the collision points of the threshold beams 2 are subjected to concentrated stress, the threshold beams 2 are sequentially fixed with the side wall 3b of the shell 3 after passing through the threshold lifting lugs 4 and the outer anti-collision beams 5, the inner anti-collision beams 10 are fixed on the inner side surface of the side wall 3b of the shell 3, the force and energy transmitted through the threshold lifting lugs 4 firstly act on the outer anti-collision beams 5, and then are transmitted to the side wall 3b of the shell 3 and the inner anti-collision beams 10 through the outer anti-collision beams 5, and the force and the energy are conducted in the length direction of the outer anti-collision beams 5 due to the fact that the outer anti-collision beams 5 extend in the front-back direction, so that concentrated force and energy are dispersed, the situation that the side wall 3b of the shell 3 is subjected to concentrated stress and greatly deformed to threaten the safety of a battery is avoided, and meanwhile, the outer anti-collision beams 5 are of hollow structures, and the outer anti-collision beams 5 can deform and absorb energy. When the outer impact beam 5 cannot absorb all energy, since the inner impact beam 10 is further fixed on the inner side surface of the side wall 3b of the housing 3, the inner impact beam 10 is disposed corresponding to the outer impact beam 5, and is also hollow and extends in the front-rear direction, and the inner impact beam 10 can further disperse stress and absorb energy, thereby better protecting the battery in the housing 3. And the outer anti-collision beam 5 and the inner anti-collision beam 10 are fixedly connected with the bottom plate 3a of the shell 3, and force and energy are dispersed to a plurality of areas of the shell 3, so that the influence of concentrated stress on the safety performance is avoided. Therefore, compared with the prior art, the mounting force transmission structure of the automobile body and the battery pack can better reduce the safety risk during side collision.
Example two
Only the first outer partition 7 or the second outer partition 8 is provided in the outer chamber 9, and the other structures are the same as those of the first embodiment.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides an installation biography power structure of automobile body and battery package, the automobile body has threshold roof beam (2), and the battery package has casing (3) and threshold lug (4), and the installation biography power structure of automobile body and battery package includes threshold roof beam (2), casing (3) and threshold lug (4), threshold lug (4) are located casing (3) outside and fixed connection on threshold roof beam (2), a serial communication port, still including fixing outer crashproof roof beam (5) between threshold lug (4) and casing (3) lateral wall (3 b), still be fixed with on casing (3) lateral wall (3 b) with outer crashproof roof beam (5) correspond setting and be located interior crashproof roof beam (10) of casing (3), outer crashproof roof beam (5) and interior crashproof roof beam (10) all extend and are hollow structure along fore-and-aft direction.
2. The mounting force transmission structure of a vehicle body and a battery pack according to claim 1, wherein the outer anti-collision beam (5) comprises an outer main plate (6), the outer main plate (6) is sequentially bent to form an outer main sub-plate one (6 a), an outer main sub-plate two (6 b), an outer main sub-plate three (6 c) and an outer main sub-plate four (6 d), the outer main sub-plate one (6 a) is fixedly connected to a side wall (3 b) of the housing (3), the outer main sub-plate three (6 c) is fixedly connected with a threshold lifting lug (4), the outer main sub-plate four (6 d) is fixedly connected with a bottom plate (3 a) of the housing (3), and the outer main sub-plate two (6 b), the outer main sub-plate three (6 c), the outer main sub-plate four (6 d) and the side wall (3 b) of the housing (3) enclose an outer chamber (9).
3. The mounting force transmission structure of a vehicle body and a battery pack according to claim 2, wherein the outer anti-collision beam (5) further comprises a first outer partition plate (7) fixed in the outer chamber (9), the first outer partition plate (7) is sequentially bent to form an outer partition plate I (7 a), an outer partition plate II (7 b) and an outer partition plate III (7 c), the outer partition plate I (7 a) is fixedly connected with an outer main partition plate III (6 c), and the outer partition plate III (7 c) is fixedly connected with a side wall (3 b) of the shell (3).
4. The mounting force transmission structure of the vehicle body and the battery pack according to claim 3, wherein the third outer partition plate (7 c) is located above the second outer partition plate (7 b), the upper end of the third outer partition plate (7 c) is bent towards the third outer main partition plate (6 c) to form a fourth outer partition plate (7 d), the fourth outer partition plate (7 d) is fixedly connected with the second outer main partition plate (6 b), and a first notch (7 e) is formed between the first outer partition plate (7 a) and the fourth outer partition plate (7 d).
5. The mounting force transmission structure of a vehicle body and a battery pack according to claim 3, wherein the outer anti-collision beam (5) further comprises a second outer partition plate (8) fixed in the outer cavity (9) and positioned below the first outer partition plate (7), the second outer partition plate (8) is sequentially bent to form an outer partition plate five (8 a), an outer partition plate six (8 b) and an outer partition plate seven (8 c), the outer partition plate six (8 b) is fixedly connected with an outer partition plate two (7 b), the outer partition plate five (8 a) is fixedly connected with an outer main partition plate three (6 c), and the outer partition plate seven (8 c) is fixedly connected with a side wall (3 b) of the shell (3).
6. The mounting force transmission structure of a vehicle body and a battery pack according to claim 5, wherein the lower end of the outer partition plate seven (8 c) is bent towards the outer main partition plate three (6 c) to form an outer partition plate eight (8 d), the outer partition plate eight (8 d) is fixedly connected with the outer main partition plate four (6 d), and a second notch (8 e) is formed between the outer partition plate five (8 a) and the outer partition plate eight (8 d).
7. The mounting force transmission structure of a vehicle body and a battery pack according to any one of claims 1 to 6, wherein the inner anti-collision beam (10) comprises an inner main plate (11), the inner main plate (11) is sequentially bent to form an inner main sub-plate one (11 a), an inner main sub-plate two (11 b), an inner main sub-plate three (11 c) and an inner main sub-plate four (11 d), the inner main sub-plate one (11 a) is fixedly connected with a side wall (3 b) of the shell (3), the inner main sub-plate four (11 d) is fixedly connected with a bottom plate (3 a) of the shell (3), and the inner main sub-plate two (11 b), the inner main sub-plate three (11 c), the bottom plate (3 a) of the shell (3) and the side wall (3 b) of the shell (3) enclose an inner chamber (13).
8. The mounting force transmission structure of a vehicle body and a battery pack according to claim 7, wherein an inner partition plate (12) is fixed in the inner chamber (13), the inner partition plate (12) is sequentially bent to form an inner partition plate one (12 a), an inner partition plate two (12 b) and an inner partition plate three (12 c), the inner partition plate one (12 a) is fixedly connected with a side wall (3 b) of the shell (3), the inner partition plate three (12 c) is fixedly connected with an inner main partition plate three (11 c), and the inner partition plate two (12 b) is close to a bottom plate (3 a) of the shell (3).
9. The mounting force transmission structure of a vehicle body and a battery pack according to any one of claims 1 to 6, wherein the threshold lifting lug (4) comprises a sheet metal plate (4 a), the sheet metal plate (4 a) is sequentially bent to form a fixing portion (4 a 1), an upper mounting portion (4 a 2), a connecting portion (4 a 3) and a lower mounting portion (4 a 4), the fixing portion (4 a 1) is fixed on an outer anti-collision beam (5), the upper mounting portion (4 a 2) is fixed on the bottom surface of the threshold beam (2), the connecting portion (4 a 3) is located below the upper mounting portion (4 a 2), the lower mounting portion (4 a 4) is located between the connecting portion (4 a 3) and the fixing portion (4 a 1), and a reinforcing plate (4 b) is connected between the lower mounting portion (4 a4 and the fixing portion (4 a 1).
10. The mounting force transmission structure of the vehicle body and the battery pack according to claim 9, wherein a structural opening (4 c) is formed between the lower mounting portion (4 a 4) and the fixing portion (4 a 1), the threshold lifting lug (4) is fixedly connected to the threshold beam (2) through a bolt (14), a sleeve (15) is formed between the upper mounting portion (4 a 2) and the lower mounting portion (4 a 4), and a rod portion of the bolt (14) is connected with a nut (16) through threads after passing through the lower mounting portion (4 a 4), the sleeve (15), the upper mounting portion (4 a 2) and the bottom wall of the threshold beam (2).
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