CN219524046U - Lower car body structure and car - Google Patents
Lower car body structure and car Download PDFInfo
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- CN219524046U CN219524046U CN202223158261.5U CN202223158261U CN219524046U CN 219524046 U CN219524046 U CN 219524046U CN 202223158261 U CN202223158261 U CN 202223158261U CN 219524046 U CN219524046 U CN 219524046U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Body Structure For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The utility model relates to a lower vehicle body structure which comprises a lower vehicle body, a plurality of electric cores and a bottom guard plate, wherein the middle section of the lower vehicle body is provided with an automobile floor, a left threshold beam, a right threshold beam, a front beam and a rear beam, the left threshold beam, the right threshold beam, the front beam and the rear beam enclose a rectangular frame-shaped structure, the automobile floor is fixedly connected to the upper side of the rectangular frame-shaped structure, the bottom guard plate is fixedly connected to the lower side of the rectangular frame-shaped structure, the automobile floor, the bottom guard plate and the rectangular frame-shaped structure enclose a closed cavity, the electric cores are all installed in the closed cavity, the automobile floor is provided with an electric core connecting part for fixedly connecting the electric cores, and the electric cores are all fixedly connected with the electric core connecting part. The utility model provides a novel integration mode of a power battery system of a new energy automobile, which can improve the space utilization rate and integration efficiency of the whole automobile, reduce the weight of the whole automobile, enlarge the arrangement space of the power battery and reduce the arrangement space requirement of the power battery in the automobile height direction.
Description
Technical Field
The utility model relates to an automobile, in particular to a lower automobile body structure and an automobile.
Background
With the rapid development of new energy automobile markets, the occupancy of the electric automobile is greatly improved, meanwhile, the mileage anxiety of a user on a pure electric automobile is increasingly increased, the light weight of a battery pack and the improvement of energy density are one of key means for solving the mileage anxiety, and therefore, the improvement of the integration level of the battery pack and the space utilization of the battery pack become targets for pursuing in the new energy automobile industry.
The current integration mode of the power battery system of the mainstream new energy automobile is as follows: the battery pack is assembled on the whole vehicle after the battery module or the battery core, the controller, the box body, the upper cover, the thermal management component, the electric component and other parts are separated into the battery packs in the battery production line. For example, a battery pack mounting structure and a vehicle as disclosed in patent application CN202121245577.0 employ the above-described integration method. The above-mentioned integrated mode can realize the mass production of power battery package, but above-mentioned integrated mode has following technical problem: the battery pack and the vehicle body are required to meet the structural strength requirement respectively, and the mutual assembly gap is reserved, so that the space utilization rate and the integration efficiency of the whole vehicle are not high enough, and the light weight of the whole vehicle is not facilitated.
Disclosure of Invention
The object of the present utility model is to propose a lower body structure and a motor vehicle, which alleviate or eliminate at least one of the above mentioned technical problems.
The utility model discloses a lower vehicle body structure, which comprises a lower vehicle body, a plurality of electric cores and a bottom guard board, wherein the middle section of the lower vehicle body is provided with an automobile floor, a left threshold beam, a right threshold beam, a front cross beam and a rear cross beam, two ends of the front cross beam are fixedly connected with the front end part of the left threshold beam and the front end part of the right threshold beam respectively, two ends of the rear cross beam are fixedly connected with the rear end part of the left threshold beam and the rear end part of the right threshold beam respectively, the left threshold beam, the right threshold beam, the front cross beam and the rear cross beam enclose a rectangular frame-shaped structure, the automobile floor is fixedly connected to the upper side of the rectangular frame-shaped structure, the bottom guard board is fixedly connected to the lower side of the rectangular frame-shaped structure, the automobile floor, the bottom guard board and the rectangular frame-shaped structure enclose a closed cavity, a plurality of electric cores are all arranged in the closed cavity, and the electric cores are fixedly connected with the electric cores on the automobile floor.
Optionally, the plurality of battery cells are fixedly connected with the automobile floor through a structural adhesive layer.
Optionally, the plurality of battery cells are fixedly connected with the automobile floor through fasteners.
Optionally, a reinforcing beam is further disposed in the closed cavity, and two ends of the reinforcing beam are fixedly connected with the left threshold beam and the right threshold beam respectively.
Optionally, a reinforcing longitudinal beam is further arranged in the closed cavity, and two ends of the reinforcing longitudinal beam are fixedly connected with the front cross beam and the rear cross beam respectively.
Optionally, the left threshold beam and the right threshold beam are cast pieces integrally formed.
Optionally, the cross sections of the left threshold beam and the right threshold beam are all in a grid shape.
Optionally, a seat mounting cross beam and/or a middle channel are/is fixedly connected to the upper side of the automobile floor.
Optionally, the underside of the bottom guard plate is covered with a stone-strike resistant coating.
An automobile according to the present utility model includes the lower body structure described in any one of the above.
The utility model provides a novel integration mode of a power battery system of a new energy automobile, which can improve the space utilization rate and integration efficiency of the whole automobile, reduce the weight of the whole automobile, enlarge the arrangement space of the power battery and reduce the arrangement space requirement of the power battery in the automobile height direction.
Drawings
Fig. 1 is one of schematic structural views of a lower vehicle body structure according to the embodiment;
fig. 2 is a second schematic structural view of the lower vehicle body structure according to the embodiment.
In the figure: 1-lower vehicle body; 2-an automotive floor; 3-left sill beam; 4-right threshold beam; 5-an electric core; 6, a water cooling plate; 7-a bottom guard board; 8-a structural adhesive layer.
Detailed Description
Further advantages and effects of the present utility model will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The lower vehicle body structure shown in fig. 1 comprises a lower vehicle body 1, a plurality of electric cells 5 and a bottom guard plate 7, wherein the middle section of the lower vehicle body 1 is provided with an automobile floor 2, a left threshold beam 3, a right threshold beam 4, a front cross beam and a rear cross beam, two ends of the front cross beam are fixedly connected with the front end part of the left threshold beam 3 and the front end part of the right threshold beam 4 respectively, two ends of the rear cross beam are fixedly connected with the rear end part of the left threshold beam 3 and the rear end part of the right threshold beam 4 respectively, the left threshold beam 3, the right threshold beam 4, the front cross beam and the rear cross beam enclose a rectangular frame-shaped structure, the automobile floor 2 is fixedly connected to the upper side of the rectangular frame-shaped structure, the bottom guard plate 7 is fixedly connected to the lower side of the rectangular frame-shaped structure, the automobile floor 2, the bottom guard plate 7 and the rectangular frame-shaped structure enclose a closed cavity, the electric cells 5 are all installed in the closed cavity, and the electric cells 5 are fixedly connected to the electric cell connecting parts.
By adopting the technical scheme, the left threshold beam 3, the right threshold beam 4, the front cross beam, the rear cross beam, the lower part of the automobile floor 2 and the bottom guard plate 7 are utilized to enclose a closed cavity for accommodating a plurality of battery cells 5, so that the box body and the upper cover structure in the traditional battery pack are reduced, the number of parts is reduced, the repeated structure between the beam system of the lower automobile body 1 and the traditional battery pack is effectively avoided, the weight of the whole automobile can be reduced, the arrangement space of the power battery can be enlarged, the arrangement space requirement of the power battery in the automobile height direction can be reduced, the space utilization rate and the integration efficiency of the whole automobile can be improved, and the quality energy density of the new energy automobile is facilitated to be improved; through be provided with the electric core connecting portion that is used for a plurality of electric cores 5 of fixed connection on the car floor 2, on the one hand, the high space demand of arrangement that reduces power battery that can be further, space utilization and the integrated efficiency of whole car that can be further promoted, on the other hand, the space between electric core 5 and the car floor 2 in having saved traditional battery package, the space demand of arranging at the car height direction that can be further reduction power battery.
In some embodiments, as shown in fig. 2, the plurality of battery cells 5 are fixedly connected with the automobile floor 2 through a structural adhesive layer 8. In the concrete implementation, the structural adhesive is smeared on the cell connecting part of the automobile floor 2, and then the plurality of cells 5 are upwards installed on the cell connecting part, so that the plurality of cells 5 can be fixedly connected by utilizing the structural adhesive layer 8, and the automobile floor has the characteristic of convenient installation. In specific implementation, the structural adhesive layer 8 may be formed of a heat-conducting structural adhesive, which is beneficial to improving the ability of radiating the plurality of electric cores 5.
In some embodiments, the plurality of battery cells 5 are fixedly connected to the vehicle floor 2 by fasteners. The fastener is adopted for connection, so that the connection is firm. When the battery module is in specific implementation, a plurality of mounting points can be arranged on the battery cell connecting part, a plurality of battery cells 5 can be connected to the battery cell connecting part through connecting brackets and fasteners, specifically, the plurality of battery cells 5 can be connected together to form a battery cell module through the connecting brackets, the connecting brackets are fixedly connected to the automobile floor 2 through the fasteners connected with the mounting points, and therefore the battery module is fixedly connected to the automobile floor 2.
In some embodiments, a reinforcing beam is further arranged in the closed cavity, and two ends of the reinforcing beam are fixedly connected with the left threshold beam 3 and the right threshold beam 4 respectively. The structural strength of the middle section of the lower vehicle body 1 can be improved by arranging the reinforcing cross beam, and convenience is provided for reducing the box body in the traditional battery pack. As a preferred example, a cell connection point for reinforcing the connection to the cell 5 is provided on the reinforcing beam.
In some embodiments, a reinforcing longitudinal beam is further arranged in the closed cavity, and two ends of the reinforcing longitudinal beam are fixedly connected with the front cross beam and the rear cross beam respectively. The arrangement of the reinforcing longitudinal beam can improve the structural strength of the middle section of the lower vehicle body 1, and provides convenience for reducing the box in the traditional battery pack. As a preferred example, a cell connection point for reinforcing the connection to the cell 5 is provided on the reinforcing longitudinal beam.
In some embodiments, the left rocker 3 and the right rocker 4 are each integrally cast pieces. The cast part formed integrally has higher structural strength, and provides convenience for reducing the box in the traditional battery pack. As a preferred example, the left rocker 3 and the right rocker 4 are each integrally molded aluminum alloy castings.
In some embodiments, the left rocker 3 and the right rocker 4 are both lattice-shaped in cross section. The inside of the threshold roof beam that the section is latticed all has the strengthening rib, has higher structural strength.
In some embodiments, a seat mounting cross member and/or a center tunnel is fixedly connected to the upper side of the vehicle floor 2. Providing seat mounting cross members and/or intermediate channels can improve the structural strength of the vehicle floor 2.
In some embodiments, the underside of the bottom guard plate 7 is covered with a stone-impact-resistant coating, which is provided to enhance the protection of the bottom guard plate 7, as a preferred example, a PVC stone-impact-resistant coating.
In some embodiments, the automobile floor 2 and the rectangular frame can be fixedly connected together through fasteners, a sealing structure is arranged between the automobile floor 2 and the rectangular frame to form a seal, the bottom guard plate 7 and the rectangular frame can be fixedly connected together through fasteners, a sealing structure is arranged between the automobile floor 2 and the rectangular frame to form a seal, the fasteners can be bolts or rivets, and the sealing structure can be sealant or sealing strips.
In some embodiments, the lower body structure further includes a water cooling plate 6 disposed within the enclosed cavity, the water cooling plate 6 being disposed on the underside of the plurality of cells 5.
The lower car body structure improves the traditional lower car body structure, and the structure of the threshold beam is optimized, the reinforcing cross beam is increased, the reinforcing longitudinal beam is increased, so that the strength of the frame structure formed by the whole beam system can meet the collision requirement of the whole car, the vibration and extrusion requirements of the power battery can be met, and convenience is brought to the reduction of the box body in the traditional battery pack.
The lower vehicle body structure also provides a new assembly mode, and the assembly process of the lower vehicle body structure is as follows: the assembly is carried out at a high station, the lower car body 1 is lifted, then the automobile floor 2 is automatically coated with glue, the battery module or the battery cell 5 is fixed on the automobile floor 2, the battery module or the battery cell 5 can be lifted to the lower side of the automobile floor 2 together with front and rear suspensions through automatic equipment to be assembled, then the installation of other parts such as electric components and the like is completed according to a certain assembly sequence, the bottom guard plate 7 is assembled after the functional test is qualified, the air tightness test is carried out, and the assembly of the lower car body structure is completed.
In some embodiments, the present disclosure also contemplates an automobile including a lower body structure as described in any one of the preceding claims.
The above embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. In the description of the present specification, a description referring to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the utility model in connection with the embodiment or example. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
Claims (10)
1. The utility model provides a lower body structure, its characterized in that includes automobile body, a plurality of electric core and end backplate, the middle section of automobile body is provided with floor, left threshold roof beam, right threshold roof beam, front end rail and rear end rail down, the both ends of front end rail respectively with the preceding tip of left threshold roof beam and the preceding tip fixed connection of right threshold roof beam, the both ends of rear end rail respectively with the rear end of left threshold roof beam and the rear end fixed connection of right threshold roof beam, left side threshold roof beam, right threshold roof beam, front end rail and rear end rail enclose into rectangular frame form structure, floor fixed connection is in rectangular frame form structure's upside, end backplate with rectangular frame form structure encloses into a airtight cavity, a plurality of electric core all install in the airtight cavity, be provided with on the floor and be used for the fixed connection a plurality of electric core connecting portion of electric core, a plurality of electric core all with electric core connecting portion fixed connection.
2. The lower body structure of claim 1, wherein a plurality of said cells are fixedly connected to said vehicle floor by a structural adhesive layer.
3. The lower body structure of claim 1, wherein a plurality of said cells are fixedly connected to said vehicle floor by fasteners.
4. The lower body structure according to claim 3, wherein a reinforcing cross beam is further provided in the closed cavity, and both ends of the reinforcing cross beam are fixedly connected with the left and right rocker beams, respectively.
5. The lower body structure of claim 4, wherein a reinforcing longitudinal beam is further provided in the closed cavity, and both ends of the reinforcing longitudinal beam are fixedly connected with the front cross beam and the rear cross beam, respectively.
6. The lower body structure of claim 1, wherein the left and right rocker beams are each integrally molded castings.
7. The lower body structure of claim 6, wherein the left and right rocker beams each have a cross section in a lattice shape.
8. The lower body structure according to claim 1, wherein a seat mounting cross member and/or a center tunnel is fixedly connected to an upper side of the vehicle floor.
9. The lower body structure of claim 1, wherein the underside of the bottom fender is covered with a stone-strike resistant coating.
10. An automobile comprising the lower body structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223158261.5U CN219524046U (en) | 2022-11-28 | 2022-11-28 | Lower car body structure and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223158261.5U CN219524046U (en) | 2022-11-28 | 2022-11-28 | Lower car body structure and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219524046U true CN219524046U (en) | 2023-08-15 |
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ID=87633573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223158261.5U Active CN219524046U (en) | 2022-11-28 | 2022-11-28 | Lower car body structure and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219524046U (en) |
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2022
- 2022-11-28 CN CN202223158261.5U patent/CN219524046U/en active Active
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