CN110329360B - Vehicle body structure and automobile - Google Patents
Vehicle body structure and automobile Download PDFInfo
- Publication number
- CN110329360B CN110329360B CN201810279478.0A CN201810279478A CN110329360B CN 110329360 B CN110329360 B CN 110329360B CN 201810279478 A CN201810279478 A CN 201810279478A CN 110329360 B CN110329360 B CN 110329360B
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- battery pack
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- longitudinal beam
- connecting plate
- battery
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- 238000009434 installation Methods 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 22
- 238000003466 welding Methods 0.000 description 27
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000003677 Sheet moulding compound Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000012999 compression bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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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
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/06—Supplying batteries to, or removing batteries from, vehicles
-
- 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
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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
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Body Structure For Vehicles (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a vehicle body structure and an automobile, wherein the vehicle body structure comprises a battery pack installation frame, a left doorsill, a right doorsill and a plurality of battery packs, the battery pack installation frame is fixedly connected between the left doorsill and the right doorsill, the battery pack installation frame comprises a plurality of closed-loop beam structures, gap spaces are formed on the inner sides of the closed-loop beam structures, and each battery pack is arranged on the corresponding gap space; the battery pack comprises a battery pack sealing cover and a battery tray, a sealed space for accommodating the battery module is formed between the battery pack sealing cover and the battery tray, and the top edges of the battery pack sealing covers of the battery packs are connected to the corresponding inner sides of the closed-loop beam structures respectively and cover the corresponding gap spaces to form the front floor. According to the vehicle body structure, when a certain battery pack breaks down, other battery packs can work normally, and the risk that a vehicle cannot run continuously due to sudden failure of one battery pack is avoided.
Description
Technical Field
The invention belongs to the technical field of power battery installation, and particularly relates to a vehicle body structure and an automobile.
Background
The existing automobile front floor is generally of a sheet metal panel structure, is welded with a floor framework on a welding line to form an assembly, is used as a part of a white automobile body, and is an important part for forming the passenger compartment seal.
The existing battery pack sealing cover of the electric automobile is mostly formed by composite materials or aluminum alloy, is assembled with a battery tray and a battery module to form a battery pack, and then is assembled with an automobile body through a general assembly line. The battery pack sealing cover is an important part for forming the battery pack sealing.
In the prior art, the automobile front floor and the battery pack sealing cover are two independent parts, a fit clearance requirement exists between the automobile front floor and the battery pack sealing cover, a 10-20 mm reserved clearance is required to be guaranteed so as to avoid interference or abnormal sound, the structure sacrifices the height in the Z direction (the automobile height direction), waste in space is caused, the arrangement space is tense, and the space utilization rate is low.
And, because the general arrangement demand often needs provide the mounting point for many modules on the preceding floor, but because the restriction of panel beating stamping process, can only adopt the form of splitting little scaffold weldment. The front floor assembly in the form has the advantages that on one hand, a welding process is added; on the other hand, it also results in a heavy front floor assembly.
In addition, the battery pack mounting mode of the existing electric automobile is to arrange two battery pack mounting longitudinal beams on the left and right sides between the front longitudinal beam rear section and the rear longitudinal beam front section, that is, to arrange the battery pack left mounting longitudinal beam between the left front longitudinal beam rear section and the left rear longitudinal beam front section, and to arrange the battery pack right mounting longitudinal beam between the right front longitudinal beam rear section and the right rear longitudinal beam front section. The battery pack left mounting longitudinal beam and the battery pack right mounting longitudinal beam are fixed below the front floor panel in a welding mode and used for providing mounting points for the battery pack. The width of battery package is restricted between battery package left side installation longeron and battery package right side installation longeron, because the distance between battery package left side installation longeron and left threshold and battery package right side installation longeron and the right threshold is great, leads to the width size of battery package to be restricted, and the battery module that the battery package can hold is less, and the capacity of battery package is less, and then influences electric automobile's duration.
In addition, the battery pack of the conventional electric vehicle is generally a whole, and after the battery pack fails, the electric vehicle cannot continue to run.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a vehicle body structure and car to the problem that current electric automobile can't continue to travel after the battery package breaks down.
In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a vehicle body structure, including a battery pack installation frame, a left door sill, a right door sill, and a plurality of battery packs, where the battery pack installation frame is fixedly connected between the left door sill and the right door sill, the battery pack installation frame includes a plurality of closed-loop beam structures, a gap space is formed inside each closed-loop beam structure, and each battery pack is disposed in the corresponding gap space;
the battery pack comprises a battery pack sealing cover and a battery tray, a sealed space for accommodating the battery module is formed between the battery pack sealing cover and the battery tray, and the top edges of the battery pack sealing covers of the battery packs are connected to the corresponding inner sides of the closed-loop beam structures respectively and cover the corresponding gap spaces to form the front floor.
Optionally, the battery pack mounting frame comprises a battery pack front mounting cross beam, a battery pack rear mounting cross beam, a battery pack left mounting longitudinal beam, a battery pack right mounting longitudinal beam and a battery pack middle mounting beam, the battery pack left mounting longitudinal beam is fixedly connected to the inner side of the left threshold, and the battery pack right mounting longitudinal beam is fixedly connected to the inner side of the right threshold;
the battery pack comprises a battery pack front mounting beam, a battery pack right mounting longitudinal beam, a battery pack rear mounting beam and a battery pack left mounting longitudinal beam, wherein the battery pack front mounting beam, the battery pack right mounting longitudinal beam, the battery pack rear mounting beam and the battery pack left mounting longitudinal beam are sequentially connected to form a rectangular frame, a battery pack middle mounting beam is connected to the inner side of the rectangular frame, and a plurality of closed-loop beam structures are formed between the battery pack middle mounting beam and the rectangular frame.
Optionally, the battery pack middle mounting beam comprises a battery pack middle mounting longitudinal beam, the battery pack middle mounting longitudinal beam is located between the battery pack left mounting longitudinal beam and the battery pack right mounting longitudinal beam, the front end of the battery pack middle mounting longitudinal beam is fixedly connected to the battery pack front mounting cross beam, and the rear end of the battery pack middle mounting longitudinal beam is fixedly connected to the battery pack rear mounting cross beam;
the left closed-loop beam structure is formed by sequentially connecting a battery pack front mounting cross beam, a battery pack middle mounting longitudinal beam, a battery pack rear mounting cross beam and a battery pack left mounting longitudinal beam, and the right closed-loop beam structure is formed by sequentially connecting a battery pack front mounting cross beam, a battery pack middle mounting longitudinal beam, a battery pack rear mounting cross beam and a battery pack right mounting longitudinal beam;
the battery pack installation frame is characterized in that the battery pack installation frame is provided with two battery packs side by side on the left side, the battery packs on the left side are installed on the closed-loop beam structure, and the battery packs on the right side are installed on the closed-loop beam structure.
Optionally, the vehicle body structure further comprises a left front longitudinal beam rear section, a right front longitudinal beam rear section, a front panel lower cross beam left connecting plate, a front panel lower cross beam right connecting plate, a front longitudinal beam rear section left inner connecting plate, a front longitudinal beam rear section right inner connecting plate, a front longitudinal beam rear section left outer connecting plate and a front longitudinal beam rear section right outer connecting plate;
the left end of the front wall lower cross beam is connected with the rear section of the left front longitudinal beam through a front wall lower cross beam left connecting plate, and the right end of the front wall lower cross beam is connected with the rear section of the right front longitudinal beam through a front wall lower cross beam right connecting plate;
the front side edge of the front longitudinal beam rear section left inner connecting plate is connected with a front wall panel lower beam left connecting plate, the outer edge of the front longitudinal beam rear section left inner connecting plate is connected with a left front longitudinal beam rear section, the rear side edge of the front longitudinal beam rear section left inner connecting plate is connected with a battery pack front mounting beam, the front side edge of the front longitudinal beam rear section right inner connecting plate is connected with a front wall panel lower beam right connecting plate, the outer edge of the front longitudinal beam rear section right inner connecting plate is connected with a right front longitudinal beam rear section, and the rear side edge of the front longitudinal beam rear section right connecting plate is connected with a battery pack front mounting beam;
the outer side edge of the front longitudinal beam rear section left outer connecting plate is connected with the left front longitudinal beam rear section, the rear side edge of the front longitudinal beam rear section left outer connecting plate is connected with the battery pack front mounting cross beam, the outer side edge of the front longitudinal beam rear section right outer connecting plate is connected with the right front longitudinal beam rear section, and the rear side edge of the front longitudinal beam rear section right outer connecting plate is connected with the battery pack front mounting cross beam.
Optionally, the vehicle body structure further comprises a middle mounting longitudinal beam front connecting plate, a middle mounting longitudinal beam rear connecting plate, a front mounting cross beam left connecting plate, a front mounting cross beam right connecting plate, a left mounting longitudinal beam front connecting plate, a left mounting longitudinal beam rear connecting plate, a right mounting longitudinal beam front connecting plate, a right mounting longitudinal beam rear connecting plate, a rear mounting cross beam left connecting plate and a rear mounting cross beam right connecting plate;
the front end of the middle mounting longitudinal beam of the battery pack is connected to the middle part of the front mounting cross beam of the battery pack through the middle mounting longitudinal beam front connecting plate, and the rear end of the middle mounting longitudinal beam of the battery pack is connected to the middle part of the rear mounting cross beam of the battery pack through the middle mounting longitudinal beam rear connecting plate;
the front end of the left battery pack mounting longitudinal beam is connected to the left end of the front battery pack mounting cross beam through the left mounting longitudinal beam front connecting plate and the front mounting cross beam left connecting plate, and the front end of the right battery pack mounting longitudinal beam is connected to the right end of the front battery pack mounting cross beam through the right mounting longitudinal beam front connecting plate and the front mounting cross beam right connecting plate;
the rear end of the battery pack left mounting longitudinal beam is connected with the left end of the battery pack rear mounting cross beam through the left mounting longitudinal beam rear connecting plate and the rear mounting cross beam left connecting plate, and the rear end of the battery pack right mounting longitudinal beam is connected with the right end of the battery pack rear mounting cross beam through the right mounting longitudinal beam rear connecting plate and the rear mounting cross beam right connecting plate.
Optionally, the battery pack middle mounting beam comprises a battery pack middle mounting cross beam, the battery pack middle mounting cross beam is located between the battery pack front mounting cross beam and the battery pack rear mounting cross beam, the left end of the battery pack middle mounting cross beam is fixedly connected to the battery pack left mounting longitudinal beam, and the right end of the battery pack middle mounting cross beam is fixedly connected to the battery pack right mounting longitudinal beam;
the battery pack is characterized in that two closed-loop beam structures which are arranged side by side from front to back are formed between the battery pack middle mounting cross beam and the rectangular frame, the closed-loop beam structure on the front side is formed by sequentially connecting the battery pack front mounting cross beam, the battery pack left mounting longitudinal beam, the battery pack middle mounting cross beam and the battery pack right mounting longitudinal beam, and the closed-loop beam structure on the rear side is formed by sequentially connecting the battery pack rear mounting cross beam, the battery pack left mounting longitudinal beam, the battery pack middle mounting cross beam and the battery pack right mounting longitudinal beam;
the battery pack installation frame is characterized in that the battery pack installation frame is provided with two battery packs which are arranged in front and back side by side, the battery pack on the front side is installed on the closed-loop beam structure on the front side, and the battery pack on the rear side is installed on the closed-loop beam structure on the rear side.
Optionally, the vehicle body structure further comprises a front seat front mounting beam and a front seat rear mounting beam, the left end of the front seat front mounting beam is fixedly connected to the left doorsill, the right end of the front seat front mounting beam is fixedly connected to the right doorsill, the left end of the front seat rear mounting beam is fixedly connected to the left doorsill, and the right end of the front seat rear mounting beam is fixedly connected to the right doorsill;
the middle mounting beam of the battery pack is connected below the rear mounting beam of the front seat.
Optionally, the middle mounting beam of the battery pack is a closed beam, the rear mounting beam of the front seat is an open beam, and the top of the middle mounting beam of the battery pack is fixedly connected with the bottom of the rear mounting beam of the front seat.
Optionally, the closed-loop beam structure includes an annular connecting plate, the gap space is formed inside the connecting plate, and top edges of battery pack sealing covers of the plurality of battery packs are respectively connected to the inside of the corresponding connecting plate and cover the corresponding gap space to form the front floor.
Optionally, the battery pack sealing cover comprises a top cover plate and a side cover plate surrounding the outer edge of the top cover plate by a circle, the top side of the side cover plate is connected below the outer edge of the top cover plate, the bottom side of the side cover plate is connected to the outer edge of the battery tray, and the plurality of connecting plates and the top cover plate of the battery pack sealing cover of the plurality of battery packs are combined to form the front floor.
Optionally, the battery tray includes undercut battery tray panel and fixed connection on the battery tray panel and outwards outstanding a plurality of mounting panels of the outward flange of battery tray panel, the top side edge of battery tray panel outwards buckles and forms first turn-ups, the bottom side edge of side apron outwards buckles and forms the second turn-ups, second turn-ups sealing connection be in the upper surface of first turn-ups, mounting panel fixed connection be in close ring beam structure is last.
Optionally, a first outward flange and a first inward flange are respectively formed on two sides of a top opening of the battery pack left mounting longitudinal beam, the first outward flange is fixedly connected to the left doorsill, and the first inward flange is fixedly connected to at least one top cover plate;
and a second outer flanging and a second inner flanging are respectively formed on two sides of the top opening of the battery pack right mounting longitudinal beam, the second outer flanging is fixedly connected to the right doorsill, and the second inner flanging is at least one top cover plate.
Optionally, a battery pack outlet structure for a battery pack harness to pass through is formed in the top cover plate.
Optionally, the battery pack sealing cover is an integrally formed sheet metal part or composite material panel.
Optionally, the top cover plate and the side cover plate are arranged in a split mode, the top cover plate is an integrally formed sheet metal part or a composite material panel, and the side cover plate is an integrally formed sheet metal part or a composite material panel.
Optionally, the top cover plate and the side cover plate are arranged in a split mode, the top cover plate is an integrally formed sheet metal part or a composite material panel, and the side cover plate is an integrally formed sheet metal part or a composite material panel.
According to the vehicle body structure provided by the embodiment of the invention, the battery pack mounting frame comprises a plurality of closed-loop beam structures, the inner sides of the closed-loop beam structures form gap spaces, the battery packs are arranged on the corresponding gap spaces, and the top edges of the battery pack sealing covers of the plurality of battery packs are respectively connected to the inner sides of the corresponding closed-loop beam structures and cover the corresponding gap spaces, so that a front floor is formed. Like this, dig out a plurality of breach spaces on traditional monoblock preceding floor in other words, breach space department is covered by the sealed lid of battery package, constitute preceding floor by the sealed combination of a plurality of battery package, the sealed lid of battery package is a part of preceding floor, in other words unite two into one traditional preceding floor and the sealed lid of battery package, 10 ~ 20 mm's Z is to the space between traditional preceding floor and the sealed lid of battery package has been saved, in other words, the battery package lifts on the whole, the liftoff clearance of automobile body has been increased, the road surface trafficability characteristic of vehicle has been improved, and space utilization has been promoted, total arrangement pressure has been alleviated, the weight of preceding floor assembly has been reduced. In addition, the Z-direction space of 10-20 mm is saved, so that the design height of the battery pack mounting frame can be reduced by matching with the lifting of the battery pack, the designed weight of the battery pack mounting frame is lighter, and the weight of the front floor assembly is further reduced. In addition, battery package installation frame fixed connection is between left threshold and right threshold, and battery package installation frame includes a plurality of closed loop beam structure, and a plurality of battery packages of mutual independence are installed on the breach space that a plurality of closed loop beam structure's inboard formed one-to-one. When a certain battery pack breaks down, other battery packs can work normally, and the risk that the vehicle cannot continue to run due to sudden failure of one battery pack is avoided.
On the other hand, the embodiment of the invention also provides an automobile which comprises the automobile body structure.
Drawings
FIG. 1 is a top plan view of a vehicle body structure provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a bottom view of the vehicle body structure provided by one embodiment of the present invention;
FIG. 5 is an exploded view of a vehicle body structure provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of the connection of the front seat rear mounting cross member to the battery pack mounting cross member of the vehicle body structure provided in accordance with one embodiment of the present invention;
FIG. 7 is a cross-sectional view taken in the direction of C-C in FIG. 6;
FIG. 8 is a crash energy transfer path diagram of a vehicle body structure provided in accordance with one embodiment of the present invention in the event of a side-on-vehicle collision;
FIG. 9 is a top plan view of a vehicle body structure provided in accordance with another embodiment of the present invention;
FIG. 10 is a cross-sectional view taken in the direction D-D of FIG. 9;
FIG. 11 is a bottom plan view of a vehicle body structure provided in accordance with another embodiment of the present invention;
FIG. 12 is an exploded view of a vehicle body structure provided in accordance with another embodiment of the present invention;
fig. 13 is a collision energy transfer path diagram of a vehicle body structure provided in another embodiment of the invention at the time of a frontal collision.
The reference numerals in the specification are as follows:
1. a battery pack mounting frame; 11. a cross beam is arranged in front of the battery pack; 12. a cross beam is arranged behind the battery pack; 13. a longitudinal beam is arranged on the left side of the battery pack; 131. a first outward flange; 132. a first inner flange; 14. a longitudinal beam is arranged on the right side of the battery pack; 141. a second outer flanging; 142. a second inner flanging; 15a, mounting a cross beam in the middle of the battery pack; 15b, installing a longitudinal beam in the middle of the battery pack; 161. the middle part is provided with a longitudinal beam front connecting plate; 162. the middle part is provided with a longitudinal beam rear connecting plate; 163. a beam left connecting plate is arranged in front; 164. a beam right connecting plate is arranged in front; 165. a longitudinal beam front connecting plate is arranged on the left side; 166. a longitudinal beam rear connecting plate is arranged on the left side; 167. a longitudinal beam front connecting plate is installed on the right side; 168. a longitudinal beam rear connecting plate is arranged on the right side; 169. a beam left connecting plate is arranged at the rear part; 170. a beam right connecting plate is arranged at the back; 18. a connecting plate; 181. a gap space;
2. a left threshold;
3. a right threshold;
4. a battery pack; 41. a battery pack sealing cover; 411. a top cover plate; 412. a side cover plate; 4121. second flanging; 413. a battery pack outlet structure;
5. a beam is arranged in front of the front seat;
6. a beam is arranged behind the front seat;
7. a front frame structure; 71. a left front longitudinal beam rear section; 72. a right front longitudinal beam rear section; 73. a cowl lower cross member; 74. a left connecting plate of a lower beam of the front wall plate; 75. a right connecting plate of a lower beam of the front wall plate; 76. a front longitudinal beam rear section left inner connecting plate; 77. a front longitudinal beam rear section right inner connecting plate; 78. a left outer connecting plate at the rear section of the front longitudinal beam; 79. a front longitudinal beam rear section right outer connecting plate;
8. and a rear longitudinal beam.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 8, a vehicle body structure provided in an embodiment of the present invention includes a battery pack mounting frame 1, a left side sill 2, a right side sill 3, and a plurality of battery packs 4, where the plurality of battery packs 4 are independent of each other, the battery pack mounting frame 1 is fixedly connected between the left side sill 2 and the right side sill 3, the battery pack mounting frame 1 includes a plurality of closed-loop beam structures, each closed-loop beam structure is provided with a gap space 181, and each battery pack 4 is disposed on the corresponding gap space 181. The battery pack 4 includes a battery pack sealing cover 41 and a battery tray (not shown), a sealed space for accommodating the battery module is formed between the battery pack sealing cover 41 and the battery tray, and top edges of the battery pack sealing covers 41 of the plurality of battery packs 4 are respectively connected to the inner sides of the corresponding closed-loop beam structures and cover the corresponding gap spaces 181, so as to form a front floor.
Like this, dig out a plurality of breach spaces 181 on being equivalent to in traditional monoblock preceding floor, breach space 181 department is covered by battery package sealed lid 41, constitute preceding floor by the combination of a plurality of battery package sealed lids 41, battery package sealed lid is a part of preceding floor, be equivalent to unite two into one traditional preceding floor and battery package sealed lid, 10 ~ 20 mm's Z is to the space between traditional preceding floor and the battery package sealed lid has been saved, be equivalent to battery package 4 lifts on the whole, the liftoff clearance of automobile body has been increased, the road surface trafficability characteristic of vehicle has been improved, and space utilization has been promoted, total arrangement pressure has been alleviated, the weight of preceding floor assembly has been reduced. In addition, the Z-direction space of 10-20 mm is saved, so that the design height of the battery pack mounting frame 1 can be reduced by matching with the upward lifting of the battery pack 4, the designed weight of the battery pack mounting frame 1 is lighter, and the weight of the front floor assembly is further reduced.
In addition, when a certain battery pack 4 breaks down, other battery packs can work normally, and the risk that the vehicle cannot continue to run due to sudden failure of one battery pack 4 is avoided.
In one embodiment, the closed loop beam structure includes a ring-shaped connection plate 18, the gap spaces 181 are formed on the connection plate 18, and top edges of the battery pack sealing covers 41 of a plurality of battery packs 4 are respectively connected to the inner sides of the corresponding connection plates 18 and cover the corresponding gap spaces 181 to form a front floor.
In one embodiment, as shown in fig. 5, the battery pack sealing cover 41 includes a top cover plate 411 and a side cover plate 412 surrounding an outer edge of the top cover plate 411 in a circle, a top side of the side cover plate 412 is connected below the outer edge of the top cover plate 411, a bottom side of the side cover plate 412 is connected to an outer edge of the battery tray, the top cover plates 411 of a plurality of battery packs 4 are combined to form a front floor, and the outer edge of the battery tray is fixedly connected to the closed-loop beam structure.
The top cover plate 411 is a part of the battery pack sealing cover 41, a plurality of top cover plates 411 are combined to form a front floor, and a carpet is directly paved on the plurality of top cover plates 411.
In one embodiment, the battery tray includes a downwardly concave battery tray panel and a plurality of mounting plates fixedly attached to the battery tray panel and outwardly protruding from the outer edge of the battery tray panel, the top edge of the battery tray panel is outwardly bent to form a first flange, the bottom edge of the side cover 412 is outwardly bent to form a second flange 4121 (shown in fig. 5), and the second flange 4121 is sealingly attached to the upper surface of the first flange. The sealing connection here may be by means of a gasket or by gluing. In addition, in order to ensure the connection strength, the second flange 4121 and the first flange may be fastened by a bolt. The mounting plate is fixedly connected to the closed-loop beam structure in a bolt connection mode and the like. Thus, the plurality of battery packs 4 are connected to the battery pack mounting frame 1.
In one embodiment, as shown in fig. 4 and 5, the battery pack mounting frame 1 includes a battery pack front mounting cross beam 11, a battery pack rear mounting cross beam 12, a battery pack left mounting longitudinal beam 13, a battery pack right mounting longitudinal beam 14, and a battery pack middle mounting cross beam, the battery pack left mounting longitudinal beam 13 is fixedly connected to the inner side of the left rocker 2 by welding or the like, and the battery pack right mounting longitudinal beam 14 is fixedly connected to the inner side of the right rocker 3 by welding or the like. The battery pack comprises a battery pack front mounting beam 11, a battery pack right mounting longitudinal beam 14, a battery pack rear mounting beam 12 and a battery pack left mounting longitudinal beam 13 which are sequentially connected to form a rectangular frame, a battery pack middle mounting beam is connected to the inner side of the rectangular frame, and a plurality of closed-loop beam structures are formed between the battery pack middle mounting beam and the rectangular frame. The plurality of battery packs 4 are mounted on the plurality of closed-loop beam structures in a one-to-one correspondence. On one hand, the periphery of the battery pack 4 is continuously installed; on the other hand, the strength and rigidity of the closed-loop beam structure are high, so that the whole battery pack mounting frame 1 has high strength and rigidity, the deformation resistance of the battery pack mounting frame 1 is enhanced, and the mounting strength of the battery pack 4 is improved.
The battery pack left side installation longitudinal beam 13 is directly connected with the left doorsill 2, the battery pack right side installation longitudinal beam 14 is directly connected with the right doorsill 3, the width between the battery pack left side installation longitudinal beam 13 and the battery pack right side installation longitudinal beam 14 is large, more battery packs 4 can be placed in the same space below the vehicle body floor, the total battery capacity of the battery packs 4 is increased, and therefore the cruising ability of the electric vehicle is improved.
In an embodiment, the battery pack left mounting longitudinal beam 13 and the battery pack right mounting longitudinal beam 14 are both open beams, a first outward flange 131 and a first inward flange 132 are respectively formed on two sides of a top opening of the battery pack left mounting longitudinal beam 13, the first outward flange 131 is fixedly connected to the left doorsill 2 in a welding manner or the like, the first inward flange 132 is fixedly connected to the left side of at least one top cover plate 411, for example, when there are two battery packs 4 side by side left and right, the first inward flange 132 is fixedly connected to the left side of the top cover plate 411 of the battery pack 4 on the left side; for another example, when there are two battery packs 4 arranged side by side in the front and rear direction, the first inward flange 132 is fixedly connected to the left side of the top cover plate 411 of the two battery packs 4 in the front and rear direction. A second outward flanging 141 and a second inward flanging 142 are respectively formed on two sides of the top opening of the battery pack right mounting longitudinal beam 14, the second outward flanging 141 is fixedly connected to the right doorsill 3 in a welding mode and the like, the second inward flanging 142 is fixedly connected to the right side of at least one top cover plate 411, for example, when two battery packs 4 are arranged side by side left and right, the second inward flanging 142 is fixedly connected to the right side of the top cover plate 411 of the battery pack 4 on the right side; for another example, when there are two battery packs 4 arranged side by side in the front and rear direction, the second inward flange 142 is fixedly connected to the right side of the top cover plate 411 of the two battery packs 4 in the front and rear direction. In this way, a closed cavity is formed between the top cover 411 and the left battery pack mounting side member 13, and the closed cavity can transmit collision force in the front-rear direction during frontal collision to disperse the force applied to the left rocker 2. Similarly, a closed cavity is formed between the top cover 411 and the right battery pack mounting side member 14, and the closed cavity can transmit collision force in the front-rear direction during frontal collision to disperse the force applied to the right side sill 3.
In an embodiment, as shown in fig. 4 and 5, the battery pack middle mounting beam includes a battery pack middle mounting cross beam 15a, the battery pack middle mounting cross beam 15a is located between the battery pack front mounting cross beam 11 and the battery pack rear mounting cross beam 12, a left end of the battery pack middle mounting cross beam 15a is fixedly connected to the battery pack left mounting longitudinal beam 13, and a right end of the battery pack middle mounting cross beam 15a is fixedly connected to the battery pack right mounting longitudinal beam 14. The battery pack comprises a rectangular frame, a battery pack middle mounting cross beam 15a and a closed loop beam structure, wherein the two closed loop beam structures are arranged in parallel from front to back between the rectangular frame, the closed loop beam structure on the front side is formed by connecting a battery pack front mounting cross beam 11, a battery pack left mounting longitudinal beam 13, a battery pack middle mounting cross beam 15a and a battery pack right mounting longitudinal beam 14 in sequence, and the closed loop beam structure on the rear side is formed by connecting a battery pack rear mounting cross beam 12, a battery pack left mounting longitudinal beam 13, a battery pack middle mounting cross beam 15a and a battery pack right mounting longitudinal beam 14 in sequence. The battery pack installation frame 1 is characterized in that the inner side of the battery pack installation frame 1 is provided with two battery packs 4 which are arranged in a front-back side-by-side mode, the battery pack 4 at the front side is installed on the closed-loop beam structure at the front side, and the battery pack 4 at the rear side is installed on the closed-loop beam structure at the rear side. That is, in this embodiment, the conventional integral battery pack is divided into two battery packs 4 arranged side by side in the front-rear direction. After one of the battery packs 4 fails, the other battery pack 4 can work normally, and the vehicle can continue to run.
In one embodiment, as shown in fig. 2, 3 and 5, the connecting plate 18 is fixedly connected to the top cover plate 411 by surrounding the outer side of the top cover plate 411. Corresponding to the embodiment that the battery pack mounting frame 1 comprises a battery pack front mounting cross beam 11, a battery pack rear mounting cross beam 12, a battery pack left mounting longitudinal beam 13, a battery pack right mounting longitudinal beam 14 and a battery pack middle mounting cross beam 15a, the front side of the connecting plate 18 at the front side is connected to the top side of the battery pack front mounting cross beam 11, the left side of the connecting plate 18 at the front side is connected to the top side (first inward flange 132) of the battery pack left mounting longitudinal beam 13, the rear side of the connecting plate 18 at the front side is connected to the top side of the battery pack middle mounting cross beam 15a, and the right side of the connecting plate 18 at the front side is connected to the top side (second inward flange 142) of the battery pack right mounting longitudinal. At this time, the front side of the connecting plate 18 at the rear side is connected to the top side of the battery pack middle mounting cross beam 15a, the left side of the connecting plate 18 at the rear side is connected to the top side (first inward-turned edge 132) of the battery pack left mounting longitudinal beam 13, the rear side of the connecting plate 18 at the rear side is connected to the top side of the battery pack rear mounting cross beam 12, and the right side of the connecting plate 18 at the rear side is connected to the top side (second inward-turned edge 142) of the battery pack right mounting longitudinal beam 14.
The annular connection plates 18 connect the four sides of the top cover plate 411 to the corresponding closed-loop beam structures, respectively. In addition, the annular connecting plate 18 can also fill the gap between the top cover plate 411 and the closed loop beam structure.
Corresponding to the embodiment in which the connecting plate 18 is a sheet metal part, the left side portion, the right side portion, the front side portion, and the rear side portion of the connecting plate 18 are independent sheet metal parts and are connected in a ring shape by tailor welding. For the connecting plate 18 that forms an organic whole through the middle part of the large-area sheet metal component of monoblock hollows out, can reduce the quantity of panel beating, improve material utilization.
In other embodiments, the connecting plate 18 may be an integrally formed plastic plate, in which case the connecting plate 18 in the form of a plastic plate is connected to the peripheral members (the closed-loop beam structure, the top cover plate 411, and the like) by gluing and riveting.
In one embodiment, as shown in fig. 1, 3 and 5, the vehicle body structure further includes a front seat front mounting cross member 5 and a front seat rear mounting cross member 6, and the front seat front mounting cross member 5 is fixedly connected to the front floor by means of gluing or the like. The left end of preceding seat front installation crossbeam 5 is in through mode fixed connection such as welding on left side threshold 2, the right-hand member of preceding seat front installation crossbeam 5 is in through mode fixed connection such as welding on right side threshold 3, the left end of preceding seat rear installation crossbeam 6 is in through mode fixed connection such as welding on left side threshold 2, the right-hand member of preceding seat rear installation crossbeam 6 is in through mode fixed connection such as welding on right side threshold 3, battery package mid-mounting crossbeam 15a is in through mode fixed connection such as welding the below of preceding seat rear installation crossbeam 6. Thus, the battery pack middle mounting cross beam 15a and the front seat rear mounting cross beam 6 are overlapped in the whole length, the front seat rear mounting cross beam 6 can improve the strength and rigidity of the battery pack middle mounting cross beam 15a, the strength and rigidity of the battery pack mounting frame 1 are enhanced, and the mounting strength of the battery pack 4 is further improved.
In a preferred embodiment, as shown in fig. 3, 6 and 7, the battery pack middle mounting beam 15a is a closed beam (having a closed cross section), the front seat rear mounting beam 6 is an open beam, and the battery pack middle mounting beam 15a and the front seat rear mounting beam 6 are connected in a buckling manner in the vehicle height direction, that is, the top of the battery pack middle mounting beam 15a is fixedly connected with the bottom of the front seat rear mounting beam 6. Specifically, welding flanges are formed on two sides of the bottom of the front seat rear mounting beam 6, two sides of a top plate of the battery pack middle mounting beam 15a in a closed beam form protrude outwards to form connecting edges, and the welding flanges of the front seat rear mounting beam 6 are connected with the connecting edges of the battery pack middle mounting beam 15a through spot welding. As shown in fig. 3, the welding flange at the front side of the front seat rear mounting beam 6 and the connecting edge at the front side of the battery pack middle mounting beam 15a are fixedly connected to the upper surface of the connecting plate 18 of the battery pack 4 at the front side by bolts or the like through an integral flange formed by spot welding, the welding flange at the rear side of the front seat rear mounting beam 6 and the connecting edge at the rear side of the battery pack middle mounting beam 15a are fixedly connected to the upper surface of the connecting plate 18 at the rear side by bolts or the like through an integral flange formed by spot welding, and the connecting edge of the battery pack middle mounting beam 15a protrudes from the welding flange of the front seat rear mounting beam 6, and the protruding part is directly covered by a carpet.
Because the two ends of the battery pack middle mounting cross beam 15a are respectively and fixedly connected to the battery pack left mounting longitudinal beam 13 and the battery pack right mounting longitudinal beam 14, and the battery pack left mounting longitudinal beam 13 and the battery pack right mounting longitudinal beam 14 are respectively and fixedly connected with the left threshold 2 and the right threshold 3. Thus, the battery pack middle mounting cross member 15a is indirectly connected to the left and right side sills 2 and 3. In addition, in this position, the B-pillars on the left and right sides are connected to the left rocker 2 and the right rocker 3, respectively. As shown in fig. 8, when a side collision of the vehicle occurs (taking a left side collision as an example), collision energy from the side collision is transmitted from the left side sill 2 portion to the left battery pack mounting side member 13, and is dispersed and transmitted through the battery pack front mounting cross member 11, the battery pack middle mounting cross member 15a, the battery pack rear mounting cross member 12, the front seat front mounting cross member 5, and the front seat rear mounting cross member 6, thereby protecting the occupant from the collision. The arrow direction in fig. 8 is the collision energy transfer direction.
In an embodiment, as shown in fig. 1 and fig. 5, a battery pack outlet structure 413 for passing a battery pack harness is opened on the top cover plate 411, and a seal is formed at the battery pack outlet structure 413. The battery pack outlet structure 413 of the battery pack 4 on the front side and the battery pack outlet structure 413 of the battery pack 4 on the rear side are located on the same straight line in the vehicle length direction, and the battery pack outlet structure 413 of the battery pack 4 on the front side and the battery pack outlet structure 413 of the battery pack 4 on the rear side are located just below the middle channel, so that a battery pack wire harness is introduced into the middle channel.
In the above embodiment, the battery pack sealing cover 41 is an integrally molded composite panel. The material of the composite material panel may be SMC (Sheet Molding Compound), a reinforced fiber composite material plate, or the like (for example, a carbon fiber composite material plate, a glass fiber composite material plate, and an aramid fiber composite material plate).
Since the battery pack sealing cover 41 is an integrally formed composite panel in the above embodiment, the battery pack 4 only needs to form a seal between the battery pack sealing cover 41 and the battery tray, that is, the sealing gasket interposed between the battery pack sealing cover 41 and the battery tray can seal the battery pack 4.
Fig. 9 to 12 show a vehicle body structure according to another embodiment of the present invention. In the following embodiments, the same points as those of the embodiments shown in fig. 1 to 8 will not be described.
In one embodiment, as shown in fig. 10 to 12, the battery pack middle mounting beam comprises a battery pack middle mounting longitudinal beam 15b, the battery pack middle mounting longitudinal beam 15b is a closed beam (having a closed cross section), and two sides of a top plate of the battery pack middle mounting longitudinal beam 15b in the form of the closed beam protrude outwards to form connecting edges. As shown in fig. 10, the connecting edge of the battery pack middle mounting longitudinal beam 15b is fixedly connected to the upper surfaces of the left and right connecting plates 18 by means of bolts or the like, the top surface of the top cover plate 411 and the top surface of the battery pack middle mounting longitudinal beam 15b are substantially in the same horizontal plane, and the top surface of the battery pack middle mounting longitudinal beam 15b is directly covered by a carpet. The battery pack middle mounting longitudinal beam 15b is located between the battery pack left mounting longitudinal beam 13 and the battery pack right mounting longitudinal beam 14, the front end of the battery pack middle mounting longitudinal beam 15b is fixedly connected to the battery pack front mounting cross beam 11, and the rear end of the battery pack middle mounting longitudinal beam 15b is fixedly connected to the battery pack rear mounting cross beam 12. Two closed-loop beam structures which are arranged side by side at the left and the right are formed between the battery pack middle installation longitudinal beam 15b and the rectangular frame. The left closed-loop beam structure is formed by sequentially connecting a battery pack front mounting cross beam 11, a battery pack middle mounting longitudinal beam 15b, a battery pack rear mounting cross beam 12 and a battery pack left mounting longitudinal beam 13, and the right closed-loop beam structure is formed by sequentially connecting a battery pack front mounting cross beam 11, a battery pack middle mounting longitudinal beam 15b, a battery pack rear mounting cross beam 12 and a battery pack right mounting longitudinal beam 14. The battery pack installation frame 1 is characterized in that the battery pack installation frame is provided with two battery packs 4 which are arranged side by side left and right, the battery pack 4 on the left side is installed on the closed-loop beam structure, and the battery pack 4 on the right side is installed on the closed-loop beam structure on the rear side. That is, in this embodiment, the conventional integral battery pack is divided into two battery packs 4 arranged side by side in the left-right direction. After one of the battery packs 4 fails, the other battery pack 4 can work normally, and the vehicle can continue to run.
Corresponding to the embodiment that the battery pack installation frame 1 comprises a battery pack front installation cross beam 11, a battery pack rear installation cross beam 12, a battery pack left installation longitudinal beam 13, a battery pack right installation longitudinal beam 14 and a battery pack middle installation longitudinal beam 15b, the front side of a left connecting plate 18 is connected to the top side of the battery pack front installation cross beam 11, the left side of the left connecting plate 18 is connected to the top side (a first inward flanging 132) of the battery pack left installation longitudinal beam 13, the rear side of the left connecting plate 18 is connected to the top side of the battery pack rear installation cross beam 12, and the right side of the left connecting plate 18 is connected to the lower surface of the connecting edge of the battery pack middle installation longitudinal beam 15 b. At this time, the front side of the right connecting plate 18 is connected to the top side of the front mounting beam 11 of the battery pack, the left side of the right connecting plate 18 is connected to the lower surface of the connecting edge of the middle mounting beam 15b of the battery pack, the rear side of the right connecting plate 18 of the battery pack 4 is connected to the top side of the rear mounting beam 12 of the battery pack, and the right side of the rear connecting plate 18 of the rear side 4 is connected to the top side (second inward turned edge 142) of the right mounting beam 14 of the battery pack.
In one embodiment, as shown in fig. 11, the vehicle body structure further includes a left front side member rear section 71, a right front side member rear section 72, a cowl cross member 73, a cowl cross member left connecting plate 74, a cowl cross member right connecting plate 75, a front side member rear section left inner connecting plate 76, a front side member rear section right inner connecting plate 77, a front side member rear section left outer connecting plate 78, and a front side member rear section right outer connecting plate 79. The left end of the front wall lower cross beam 73 is connected with the left front longitudinal beam rear section 71 through the front wall lower cross beam left connecting plate 74, and the right end of the front wall lower cross beam 73 is connected with the right front longitudinal beam rear section 72 through the front wall lower cross beam right connecting plate 75. The front side edge of the front longitudinal beam rear section left inner connecting plate 76 is connected with a front wall panel lower beam left connecting plate 74, the outer side edge of the front longitudinal beam rear section left inner connecting plate 76 is connected with a left front longitudinal beam rear section 71, the rear side edge of the front longitudinal beam rear section left inner connecting plate 76 is connected with a battery pack front mounting beam 11, the front side edge of the front longitudinal beam rear section right inner connecting plate 77 is connected with a front wall panel lower beam right connecting plate 75, the outer side edge of the front longitudinal beam rear section right inner connecting plate 77 is connected with a right front longitudinal beam rear section 72, and the rear side edge of the front longitudinal beam rear section right inner connecting plate 77 is connected with the battery pack front mounting beam 11. The outer edge of the front longitudinal beam rear section left outer connecting plate 78 is connected with the left front longitudinal beam rear section 71, the rear side edge of the front longitudinal beam rear section left outer connecting plate 78 is connected with the battery pack front mounting cross beam 11, the outer edge of the front longitudinal beam rear section right outer connecting plate 79 is connected with the right front longitudinal beam rear section 72, and the rear side edge of the front longitudinal beam rear section right outer connecting plate 79 is connected with the battery pack front mounting cross beam 11. The left front longitudinal beam rear section 71, the right front longitudinal beam rear section 72, the front panel lower cross beam 73, the front panel lower cross beam left connecting plate 74, the front panel lower cross beam right connecting plate 75, the front longitudinal beam rear section left inner connecting plate 76, the front longitudinal beam rear section right inner connecting plate 77, the front longitudinal beam rear section left outer connecting plate 78, the front longitudinal beam rear section right outer connecting plate 79 and the battery pack front mounting cross beam 11 constitute the front frame structure 7. The front wall lower beam left connecting plate 74 and the front wall lower beam right connecting plate 75 are connected to the inner bends of the left front longitudinal beam rear section 71 and the right front longitudinal beam rear section 72 respectively, and transversely support the left front longitudinal beam rear section 71 and the right front longitudinal beam rear section 72 to resist deformation. The front longitudinal beam rear section left inner connecting plate 76, the front longitudinal beam rear section right inner connecting plate 77, the front longitudinal beam rear section left outer connecting plate 78 and the front longitudinal beam rear section right outer connecting plate 79 effectively increase the stress area in the force transmission process of the left front longitudinal beam rear section 71 and the right front longitudinal beam rear section 72, disperse the force, effectively inhibit the intrusion deformation of the front wall plate retreating towards the vehicle interior direction when being extruded, and simultaneously prevent the rear parts of the left front longitudinal beam rear section 71 and the right front longitudinal beam rear section 72 from inclining left and right caused by the compression bending deformation. In addition, the force applied to the front parts of the left and right side members in the frontal collision is dispersed to the side.
As shown in fig. 9, the battery pack outlet structure 413 of the battery pack 4 on the left side and the battery pack outlet structure 413 of the battery pack 4 on the right side are located on the same straight line in the vehicle width direction, and the battery pack outlet structure 413 of the battery pack 4 on the left side and the battery pack outlet structure 413 of the battery pack 4 on the right side are located between the front seat front mounting cross member 5 and the front seat rear mounting cross member 6 in the vehicle length direction.
In one embodiment, as shown in FIG. 11, the vehicle body structure further includes a center-mounted rail front web 161, a center-mounted rail rear web 162, a front-mounted rail left web 163, a front-mounted rail right web 164, a left-mounted rail front web 165, a left-mounted rail rear web 166, a right-mounted rail front web 167, a right-mounted rail rear web 168, a rear-mounted rail left web 169, and a rear-mounted rail right web 170. The front end of the battery pack middle mounting longitudinal beam 15b is connected to the middle of the battery pack front mounting cross beam 11 through the middle mounting longitudinal beam front connecting plate 161, and the rear end of the battery pack middle mounting longitudinal beam 15b is connected to the middle of the battery pack rear mounting cross beam 12 through the middle mounting longitudinal beam rear connecting plate 162. The front end of the battery pack left mounting longitudinal beam 13 is connected to the left end of the battery pack front mounting cross beam 11 through the left mounting longitudinal beam front connecting plate 165 and the front mounting cross beam left connecting plate 163, and the front end of the battery pack right mounting longitudinal beam 14 is connected to the right end of the battery pack front mounting cross beam 11 through the right mounting longitudinal beam front connecting plate 167 and the front mounting cross beam right connecting plate 164. The rear end of the battery pack left mounting longitudinal beam 13 is connected to the left end of the battery pack rear mounting cross beam 12 through the left mounting longitudinal beam rear connecting plate 166 and the rear mounting cross beam left connecting plate 169, and the rear end of the battery pack right mounting longitudinal beam 14 is connected to the right end of the battery pack rear mounting cross beam 12 through the right mounting longitudinal beam rear connecting plate 168 and the rear mounting cross beam right connecting plate 170. Thus, in this embodiment, the battery pack mounting frame 1 (rear frame structure) is composed of a battery pack front mounting cross member 11, a battery pack rear mounting cross member 12, a battery pack left mounting longitudinal member 13, a battery pack right mounting longitudinal member 14, a battery pack middle mounting longitudinal member 15b, a middle mounting longitudinal member front connecting plate 161, a middle mounting longitudinal member rear connecting plate 162, a front mounting cross member left connecting plate 163, a front mounting cross member right connecting plate 164, a left mounting longitudinal member front connecting plate 165, a left mounting longitudinal member rear connecting plate 166, a right mounting longitudinal member front connecting plate 167, a right mounting longitudinal member rear connecting plate 168, a rear mounting cross member left connecting plate 169, and a rear mounting cross member right connecting plate 170.
The front frame structure 7 and the rear frame structure (the battery pack mounting frame 1) described above are connected together by the battery pack front mounting cross member 11 to constitute the vehicle body structure of the embodiment of the invention.
As shown in fig. 13, at the time of a frontal collision of the vehicle, collision energy from the frontal collision is transmitted from the front frame structure 7 to the rear frame structure (the battery pack mounting frame 1) through the battery pack front mounting cross member 11, and is transmitted and dispersed rearward through the rear side members 8 to the rear of the vehicle body. The arrow direction in fig. 13 is the collision energy transfer direction.
In the above embodiment, the battery pack middle mounting beam is one beam, the battery pack mounting frame includes two closed-loop beam structures, and the number of the battery packs is two. However, according to the need of packaging the battery packs, the battery packs may be formed by combining a plurality of beams, and further, three or more closed-loop beam structures may be formed, so that three or more battery packs may be mounted. For example, the battery pack middle mounting beam comprises a cross-shaped orthogonal battery pack middle mounting longitudinal beam and a cross-shaped battery pack middle mounting transverse beam, so that four closed-loop beam structures are formed, and four independent battery packs (one for each of the front part and the left and the right, and one for each of the rear part and the left and the right) can be mounted. For another example, the battery pack middle mounting beam comprises two parallel battery pack middle mounting longitudinal beams, at this time, three closed-loop beam structures which are arranged side by side in the vehicle width direction are formed, and three independent battery packs (one in the left, middle and right) can be mounted. For another example, the battery pack middle mounting beam comprises two parallel battery pack middle mounting beams, at this time, three closed-loop beam structures in a vehicle length mode side by side are formed, and three independent battery packs (one in front, middle and back) can be mounted.
In addition, in an embodiment not shown in the drawing, the vehicle body structure further includes a central channel mounting stud for mounting the auxiliary instrument desk and the gearshift mounting bracket, a power amplifier module mounting stud for mounting the power amplifier module, a battery module mounting stud for mounting the battery module, a wire harness mounting stud for mounting the automobile wire harness, an air duct mounting stud for mounting the air-conditioning air duct, and a sheet metal guard plate mounting stud for mounting the sheet metal guard plate of the air-conditioning air duct, wherein the central channel mounting stud, the power amplifier module mounting stud, the battery module mounting stud, the wire harness mounting stud, the air duct mounting stud, and the sheet metal guard plate mounting stud are integrally formed in the plurality of top cover plates (front floor). Namely, the central channel mounting stud, the power amplifier module mounting stud, the battery module mounting stud, the wire harness mounting stud, the air duct mounting stud and the sheet metal guard plate mounting stud are integrally formed with the plurality of top cover plates in the form of composite material panels.
The front floor is based on a composite material panel formed by combining a plurality of top cover plates, and a central channel on the existing vehicle body structure is replaced by a central channel mounting stud, so that mounting points are provided for a secondary instrument desk, a gear shifting mechanism mounting bracket and the like. The power amplifier mounting stud replaces a power amplifier mounting bracket on the existing vehicle body structure, so that a mounting point is provided for the power amplifier module. The battery module mounting studs replace the battery mounting brackets on existing body structures to provide mounting points for the battery modules. A plurality of spare welding bolt supports and end face welding bolts on the existing vehicle body structure are replaced by the wire harness mounting studs, the air duct mounting studs and the sheet metal guard plate mounting studs, and accordingly mounting points are provided for a plurality of general arrangement modules such as wire harnesses, air conditioner air ducts and sheet metal guard plates of air conditioner air ducts.
In this embodiment, the upper portion of the front floor is divided from front to rear into a front mounting area, a middle mounting area, and a rear mounting area; the utility model discloses a battery module, including central channel installation double-screw bolt, power amplifier module installation double-screw bolt, battery module installation double-screw bolt, panel beating backplate installation double-screw bolt, power amplifier module installation double-screw bolt sets up the intermediate position in front portion installation area, power amplifier module installation double-screw bolt reaches pencil installation double-screw bolt sets up the left side in middle portion installation area, battery module installation double-screw bolt reaches panel beating backplate installation double-screw bolt sets up the right side in middle portion installation area, wind channel installation double.
Therefore, the central channel mounting stud, the power amplifier module mounting stud, the battery module mounting stud, the wire harness mounting stud, the air duct mounting stud and the sheet metal guard plate mounting stud are integrally formed in the front floor in the composite material panel form formed by combining the top cover plates, the sheet metal bracket at the corresponding position in the prior art can be replaced, welding is not needed, the welding process is reduced, the weight of the automobile body is reduced, and the lightweight coefficient of the automobile body is improved. The use of a front floor in the form of a composite panel and the replacement of individual sheet metal supports make a significant contribution to the weight reduction of the vehicle body, so that the vehicle body structure can be reduced by 22.7%.
In another embodiment not shown in the drawings, the top cover plate and the side cover plate are separately arranged, the top cover plate is an integrally formed composite material panel, and the side cover plate is a sheet metal part. At the moment, the top side edge of the side cover plate is bent inwards to form a third flanging, and the third flanging is hermetically connected to the lower surface of the top cover plate in an adhesive mode.
In another embodiment not shown in the drawings, the top cover plate and the side cover plate are separately arranged, the top cover plate is an integrally formed sheet metal part, and the side cover plate is another integrally formed sheet metal part. At the moment, the edge of the top side of the side cover plate is bent inwards to form a third flanging, and the third flanging is connected to the lower surface of the top cover plate in a sealing mode in a welding, riveting or welding and riveting combined mode. The top cover plate can be formed by punching with DC01 material with thickness of 0.7mm, for example. At this time, due to the limitation of the stamping process, the top cover plate cover is respectively welded with the metal plate supports.
In another embodiment not shown in the drawings, the top cover plate and the side cover plate are separately arranged, the top cover plate is an integrally formed sheet metal part, and the side cover plate is an integrally formed composite material plate. At the moment, the top side edge of the side cover plate is bent inwards to form a third flanging, and the third flanging is hermetically connected to the lower surface of the top cover plate in an adhesive mode. The top cover plate can be formed by punching with DC01 material with thickness of 0.7mm, for example. At this time, due to the limitation of the stamping process, the top cover plate cover is respectively welded with the metal plate supports.
In another embodiment not shown in the drawings, the battery pack sealing cover is an integrally formed sheet metal part, i.e., the top cover plate and the side cover plate are integrally formed by punching. For example, the DC01 material with the thickness of 0.7mm can be used for stamping forming. At the moment, due to the limitation of a stamping process, the battery pack sealing cover is respectively welded with the metal plate supports. The common feature of the above embodiments is that the top cover plate portions of the battery pack sealing covers of a plurality of battery packs are combined to form a front floor (used as a front floor), and a carpet is directly laid over the top cover plate of the battery pack sealing cover.
In addition, the embodiment of the invention also provides an automobile which comprises the automobile body structure of the embodiment.
According to the automobile provided by the embodiment, when a certain battery pack 4 breaks down, other battery packs 4 can work normally, and the risk that the automobile cannot continue to run due to sudden failure of one battery pack 4 is avoided. In addition, the battery pack left mounting longitudinal beam 13 is directly connected with the left doorsill 2, the battery pack right mounting longitudinal beam 14 is directly connected with the right doorsill 3, the width between the battery pack left mounting longitudinal beam 13 and the battery pack right mounting longitudinal beam 14 is large, more battery packs 4 can be placed in the same space below the vehicle body floor, the total battery capacity of the battery packs 4 is increased, and therefore the cruising ability of the electric vehicle is improved.
In addition, preceding floor and the sealed lid of battery package unite two into one, have saved traditional preceding floor and the sealed Z of covering 10 ~ 20mm of lid of battery package to the space, lift on being equivalent to the battery package is whole, have increased the ground clearance of automobile body, have improved the road surface trafficability characteristic of vehicle to promote space utilization, alleviated total pressure of arranging, reduced automobile body structure's weight, realized whole car lightweight.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (15)
1. A vehicle body structure is characterized by comprising a battery pack installation frame, a left threshold, a right threshold and a plurality of battery packs, wherein the battery pack installation frame is fixedly connected between the left threshold and the right threshold and comprises a plurality of closed-loop beam structures, gap spaces are formed in the inner sides of the closed-loop beam structures, and each battery pack is arranged on the corresponding gap space;
the battery pack comprises battery pack sealing covers and battery trays, a sealed space for accommodating a battery module is formed between each battery pack sealing cover and each battery tray, and the top edges of the battery pack sealing covers of the plurality of battery packs are respectively connected to the inner sides of the corresponding closed-loop beam structures and cover the corresponding gap spaces to form a front floor;
the battery pack mounting frame comprises a battery pack front mounting cross beam, a battery pack rear mounting cross beam, a battery pack left mounting longitudinal beam, a battery pack right mounting longitudinal beam and a battery pack middle mounting beam, the battery pack left mounting longitudinal beam is fixedly connected to the inner side of the left doorsill, and the battery pack right mounting longitudinal beam is fixedly connected to the inner side of the right doorsill;
the battery pack comprises a battery pack front mounting beam, a battery pack right mounting longitudinal beam, a battery pack rear mounting beam and a battery pack left mounting longitudinal beam, wherein the battery pack front mounting beam, the battery pack right mounting longitudinal beam, the battery pack rear mounting beam and the battery pack left mounting longitudinal beam are sequentially connected to form a rectangular frame, a battery pack middle mounting beam is connected to the inner side of the rectangular frame, and a plurality of closed-loop beam structures are formed between the battery pack middle mounting beam and the rectangular frame.
2. The vehicle body structure of claim 1, wherein the battery pack mid-mounting beam comprises a battery pack mid-mounting longitudinal beam positioned between the battery pack left mounting longitudinal beam and the battery pack right mounting longitudinal beam, the battery pack mid-mounting longitudinal beam having a front end fixedly connected to the battery pack front mounting cross beam and a rear end fixedly connected to the battery pack rear mounting cross beam;
the left closed-loop beam structure is formed by sequentially connecting a battery pack front mounting cross beam, a battery pack middle mounting longitudinal beam, a battery pack rear mounting cross beam and a battery pack left mounting longitudinal beam, and the right closed-loop beam structure is formed by sequentially connecting a battery pack front mounting cross beam, a battery pack middle mounting longitudinal beam, a battery pack rear mounting cross beam and a battery pack right mounting longitudinal beam;
the battery pack installation frame is characterized in that the battery pack installation frame is provided with two battery packs side by side on the left side, the battery packs on the left side are installed on the closed-loop beam structure, and the battery packs on the right side are installed on the closed-loop beam structure.
3. The vehicle body structure of claim 2, further comprising a left front side rail rear section, a right front side rail rear section, a front cowl bottom rail left connecting plate, a front cowl bottom rail right connecting plate, a front side rail rear section left inner connecting plate, a front side rail rear section right inner connecting plate, a front side rail rear section left outer connecting plate, and a front side rail rear section right outer connecting plate;
the left end of the front wall lower cross beam is connected with the rear section of the left front longitudinal beam through a front wall lower cross beam left connecting plate, and the right end of the front wall lower cross beam is connected with the rear section of the right front longitudinal beam through a front wall lower cross beam right connecting plate;
the front side edge of the front longitudinal beam rear section left inner connecting plate is connected with a front wall panel lower beam left connecting plate, the outer edge of the front longitudinal beam rear section left inner connecting plate is connected with a left front longitudinal beam rear section, the rear side edge of the front longitudinal beam rear section left inner connecting plate is connected with a battery pack front mounting beam, the front side edge of the front longitudinal beam rear section right inner connecting plate is connected with a front wall panel lower beam right connecting plate, the outer edge of the front longitudinal beam rear section right inner connecting plate is connected with a right front longitudinal beam rear section, and the rear side edge of the front longitudinal beam rear section right connecting plate is connected with a battery pack front mounting beam;
the outer side edge of the front longitudinal beam rear section left outer connecting plate is connected with the left front longitudinal beam rear section, the rear side edge of the front longitudinal beam rear section left outer connecting plate is connected with the battery pack front mounting cross beam, the outer side edge of the front longitudinal beam rear section right outer connecting plate is connected with the right front longitudinal beam rear section, and the rear side edge of the front longitudinal beam rear section right outer connecting plate is connected with the battery pack front mounting cross beam.
4. The vehicle body structure of claim 2, further comprising a mid-mount longitudinal beam front connection plate, a mid-mount longitudinal beam rear connection plate, a front-mount cross beam left connection plate, a front-mount cross beam right connection plate, a left-mount longitudinal beam front connection plate, a left-mount longitudinal beam rear connection plate, a right-mount longitudinal beam front connection plate, a right-mount longitudinal beam rear connection plate, a rear-mount cross beam left connection plate, and a rear-mount cross beam right connection plate;
the front end of the middle mounting longitudinal beam of the battery pack is connected to the middle part of the front mounting cross beam of the battery pack through the middle mounting longitudinal beam front connecting plate, and the rear end of the middle mounting longitudinal beam of the battery pack is connected to the middle part of the rear mounting cross beam of the battery pack through the middle mounting longitudinal beam rear connecting plate;
the front end of the left battery pack mounting longitudinal beam is connected to the left end of the front battery pack mounting cross beam through the left mounting longitudinal beam front connecting plate and the front mounting cross beam left connecting plate, and the front end of the right battery pack mounting longitudinal beam is connected to the right end of the front battery pack mounting cross beam through the right mounting longitudinal beam front connecting plate and the front mounting cross beam right connecting plate;
the rear end of the battery pack left mounting longitudinal beam is connected with the left end of the battery pack rear mounting cross beam through the left mounting longitudinal beam rear connecting plate and the rear mounting cross beam left connecting plate, and the rear end of the battery pack right mounting longitudinal beam is connected with the right end of the battery pack rear mounting cross beam through the right mounting longitudinal beam rear connecting plate and the rear mounting cross beam right connecting plate.
5. The vehicle body structure of claim 1, wherein the battery pack middle mounting beam comprises a battery pack middle mounting cross beam, the battery pack middle mounting cross beam is located between the battery pack front mounting cross beam and the battery pack rear mounting cross beam, a left end of the battery pack middle mounting cross beam is fixedly connected to the battery pack left mounting longitudinal beam, and a right end of the battery pack middle mounting cross beam is fixedly connected to the battery pack right mounting longitudinal beam;
the battery pack is characterized in that two closed-loop beam structures which are arranged side by side from front to back are formed between the battery pack middle mounting cross beam and the rectangular frame, the closed-loop beam structure on the front side is formed by sequentially connecting the battery pack front mounting cross beam, the battery pack left mounting longitudinal beam, the battery pack middle mounting cross beam and the battery pack right mounting longitudinal beam, and the closed-loop beam structure on the rear side is formed by sequentially connecting the battery pack rear mounting cross beam, the battery pack left mounting longitudinal beam, the battery pack middle mounting cross beam and the battery pack right mounting longitudinal beam;
the battery pack installation frame is characterized in that the battery pack installation frame is provided with two battery packs which are arranged in front and back side by side, the battery pack on the front side is installed on the closed-loop beam structure on the front side, and the battery pack on the rear side is installed on the closed-loop beam structure on the rear side.
6. The vehicle body structure according to claim 5, further comprising a front seat front mounting cross member and a front seat rear mounting cross member, wherein a left end of the front seat front mounting cross member is fixedly connected to the left rocker, a right end of the front seat front mounting cross member is fixedly connected to the right rocker, a left end of the front seat rear mounting cross member is fixedly connected to the left rocker, and a right end of the front seat rear mounting cross member is fixedly connected to the right rocker;
the middle mounting beam of the battery pack is connected below the rear mounting beam of the front seat.
7. The vehicle body structure of claim 6, wherein the battery pack middle mounting cross member is a closed beam, the front seat rear mounting cross member is an open beam, and the top of the battery pack middle mounting cross member is fixedly connected with the bottom of the front seat rear mounting cross member.
8. The vehicle body structure according to any one of claims 1 to 7, wherein the closed-loop beam structure includes an annular connecting plate, the cutout space is formed inside the annular connecting plate, and top edges of battery pack sealing covers of a plurality of battery packs are respectively attached to inside of the corresponding annular connecting plate and cover the corresponding cutout space to form a front floor.
9. The vehicle body structure according to claim 8, wherein the battery pack sealing cover includes a top cover plate and a side cover plate that surrounds an outer edge of the top cover plate in a single turn, a top side of the side cover plate is connected below the outer edge of the top cover plate, a bottom side of the side cover plate is connected to an outer edge of the battery tray, and the plurality of annular connecting plates and the top cover plates of the battery pack sealing covers of the plurality of battery packs constitute a front floor panel in combination.
10. The vehicle body structure of claim 9, wherein the battery tray includes a downwardly concave battery tray panel and a plurality of mounting plates fixedly attached to the battery tray panel and outwardly projecting beyond an outer edge of the battery tray panel, wherein a top edge of the battery tray panel is outwardly bent to form a first flange, a bottom edge of the side cover plate is outwardly bent to form a second flange, the second flange is sealingly attached to an upper surface of the first flange, and the mounting plates are fixedly attached to the closed-loop beam structure.
11. The vehicle body structure of claim 10, wherein a first outward flange and a first inward flange are respectively formed on two sides of a top opening of the left battery pack mounting longitudinal beam, the first outward flange is fixedly connected to the left door sill, and the first inward flange is fixedly connected to at least one top cover plate;
and a second outer flanging and a second inner flanging are respectively formed on two sides of the top opening of the battery pack right mounting longitudinal beam, the second outer flanging is fixedly connected to the right doorsill, and the second inner flanging is at least one top cover plate.
12. The vehicle body structure according to claim 9, wherein a battery pack outlet structure for passing a battery pack harness is provided in the roof panel.
13. The vehicle body structure of claim 9, wherein the battery pack sealing cover is an integrally formed sheet metal part or a composite panel.
14. The vehicle body structure according to claim 9, wherein the roof panel and the side panels are arranged separately, the roof panel is an integrally formed sheet metal part or composite material panel, and the side panels are integrally formed sheet metal parts or composite material panels.
15. An automobile, characterized by comprising a body structure according to any one of claims 1-14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810279478.0A CN110329360B (en) | 2018-03-30 | 2018-03-30 | Vehicle body structure and automobile |
| PCT/CN2019/080431 WO2019185023A1 (en) | 2018-03-30 | 2019-03-29 | Vehicle body structure and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810279478.0A CN110329360B (en) | 2018-03-30 | 2018-03-30 | Vehicle body structure and automobile |
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| CN110329360A CN110329360A (en) | 2019-10-15 |
| CN110329360B true CN110329360B (en) | 2021-05-14 |
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| CN201810279478.0A Active CN110329360B (en) | 2018-03-30 | 2018-03-30 | Vehicle body structure and automobile |
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| Country | Link |
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| CN (1) | CN110329360B (en) |
| WO (1) | WO2019185023A1 (en) |
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| CN111017041B (en) * | 2019-12-31 | 2022-01-21 | 东风汽车集团有限公司 | Vehicle body mounting structure based on pure electric vehicles front floor reinforcing beam structure |
| CN111186492B (en) * | 2020-01-19 | 2021-03-26 | 浙江吉智新能源汽车科技有限公司 | Vehicle body structure for replaceable electric vehicle |
| CN113968283B (en) * | 2020-07-24 | 2023-06-13 | 比亚迪股份有限公司 | Vehicle rear frame structure and vehicle |
| CN112498497B (en) * | 2020-11-09 | 2022-09-13 | 东风汽车集团有限公司 | Underbody and power battery box of electric vehicle |
| CN112701408B (en) * | 2020-12-25 | 2022-12-09 | 孚能科技(赣州)股份有限公司 | Bottom plate structure of box body chassis, battery pack and automobile |
| CN113548117B (en) * | 2021-08-17 | 2024-02-27 | 蜂巢能源科技有限公司 | Vehicle body floor assembly and vehicle |
| CN114083972A (en) * | 2021-12-13 | 2022-02-25 | 广州小鹏汽车科技有限公司 | Mounting structure and vehicle of battery package |
| CN115158488B (en) * | 2022-06-27 | 2023-11-14 | 重庆长安汽车股份有限公司 | Seat mounting beam assembly integrated with ventilating duct and automobile |
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Also Published As
| Publication number | Publication date |
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| WO2019185023A1 (en) | 2019-10-03 |
| CN110329360A (en) | 2019-10-15 |
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