CN111688810A - Connecting structure for two ends of torsion beam of electric vehicle and left and right rear longitudinal beams - Google Patents
Connecting structure for two ends of torsion beam of electric vehicle and left and right rear longitudinal beams Download PDFInfo
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- CN111688810A CN111688810A CN202010382381.XA CN202010382381A CN111688810A CN 111688810 A CN111688810 A CN 111688810A CN 202010382381 A CN202010382381 A CN 202010382381A CN 111688810 A CN111688810 A CN 111688810A
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- side wall
- battery pack
- vertical side
- torsion beam
- rear longitudinal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The connecting structure of the two ends of the torsion beam of the electric vehicle and the left and right rear longitudinal beams comprises the torsion beam, the rear longitudinal beams, a battery pack outer shell, an inner threshold, a left connecting medium component and a right connecting medium component. The left and right connecting intermediary members are respectively arranged below the left and right rear longitudinal beams of the electric vehicle; the left and right connecting intermediate members each include a horizontal side wall, a front vertical side wall, an outer vertical side wall, and an inner vertical side wall. The upper ends of the front vertical side wall, the outer vertical side wall and the inner vertical side wall are connected with the corresponding edges of the horizontal side wall, and the upper surface of the horizontal side wall is fixedly connected with the lower surface of the rear longitudinal beam in an attaching mode. The front ends of the side rods on the left side and the right side of the torsion beam extend between and are hinged with the outer vertical side wall and the inner vertical side wall of the corresponding left connecting intermediate member or right connecting intermediate member. The rear end of the battery pack outer shell is connected with the front end bolt connected with the intermediary member, and the outer vertical side wall is connected with the inner threshold. The invention integrates the battery pack and the torsion beam mounting structure, and has compact structure and large battery arrangement space.
Description
Technical Field
The invention relates to a compartment structure of an electric vehicle, in particular to a structure that the left end and the right end of a torsion beam arranged between two rear longitudinal beams are respectively connected with the left rear longitudinal beam and the right rear longitudinal beam of the vehicle.
Background
In the development process of the body structure of the electric vehicle, the body structure not only needs to meet the arrangement and installation functions, but also needs to meet the performance requirements of installation points. The torsion beam structure is also widely applied in electric vehicle development as a typical chassis structure type, but the electric vehicle needs to be provided with a power battery, the whole vehicle weight of the electric vehicle is increased by 20% -30% compared with a fuel vehicle of the same grade, the corresponding chassis load is also increased, and further higher requirements are provided for a vehicle body bearing structure. The major problem of the electric automobile is how to improve the endurance mileage, and on the premise that the performance of the power battery is the same, the larger the space available for arranging the battery pack of the electric automobile is, the higher the endurance mileage of the electric automobile can be. Therefore, how to balance the structural strength of the vehicle body, maximize the battery pack arrangement space, and reduce the weight of the vehicle body of the electric vehicle becomes a significant issue. The invention discloses a torsion beam suspension system of an electric vehicle, which is characterized in that a torsion beam is taken as a keyword of the invention name, an automobile and an electric vehicle are taken as keywords of an abstract of a specification, four pieces of utility model patent documents are searched totally, and the names of the patent documents are respectively an electric vehicle rear torsion beam independent suspension device, a pure electric vehicle rear torsion beam semi-independent suspension system, an electric vehicle rear torsion beam independent suspension device and an electric vehicle rear torsion beam suspension system, and the invention patent application document with the same unit application, name and protection content and the first utility model patent being completely the same. The patent document of the utility model, which is only 'a rear torsion beam suspension system of an electric automobile', clearly shows that the invention purpose is related to the automobile power battery: "the main beam sets up behind the automobile rear axle axis, can give the battery package bigger space". The following practical patent documents are only searched for with the term "rear torsion beam structure and automobile" using the term "torsion beam" as the main name keyword and the term "automobile" and "battery" as the abstract keywords of the description: the rear torsion beam structure comprises a cross beam, a left longitudinal arm and a right longitudinal arm, the cross beam is fixedly connected between the middle of the left longitudinal arm and the middle of the right longitudinal arm, and the cross section of the cross beam is a closed cross section. The rear torsion beam structure can reduce weight by about 10% compared with the existing opening type beam structure, has obvious weight reduction advantages, occupies smaller space on the premise of keeping the shearing center to be relatively close to the front, and can relatively provide larger-volume battery pack arrangement space.
Disclosure of Invention
The main object of the present invention is to provide a connection structure between two ends of a torsion beam and two rear side members of an electric vehicle, which has different characteristics from the above two patent documents, so as to facilitate the realization of sufficient strength when the arrangement space of a battery pack is maximized.
The technical scheme adopted by the invention is as follows: a connecting structure of two ends of a torsion beam of an electric vehicle and a left rear longitudinal beam and a right rear longitudinal beam comprises the torsion beam, the rear longitudinal beams, a battery pack outer shell, an inner doorsill, a left connecting intermediary component and a right connecting intermediary component. The left and right connecting intermediary members are respectively arranged below the left and right rear longitudinal beams of the electric vehicle; the left and right connecting intermediate members each include a horizontal side wall, a front vertical side wall, an outer vertical side wall, and an inner vertical side wall. The upper ends of the front vertical side wall, the outer vertical side wall and the inner vertical side wall are welded with the corresponding lapping surfaces of the horizontal side wall, and the upper surface of the horizontal side wall is attached to the lower surface of the rear longitudinal beam. The front ends of the side rods on the left side and the right side of the torsion beam extend between and are hinged with the outer vertical side wall and the inner vertical side wall of the corresponding left connecting intermediate member or right connecting intermediate member. The rear end of the battery pack outer shell is fixedly connected with the front end of the connecting intermediate member, and the outer vertical side wall is connected with the inner threshold.
According to the invention, through the left connecting intermediary member and the right connecting intermediary member, the side wall of the rear end of the outer shell of the battery pack of the electric vehicle can be moved backwards under the condition that the installation position of the torsion beam is not changed, so that the distance between the side wall of the rear end of the outer shell of the battery pack of the electric vehicle and the front ends of the side rods at the left end and the right end of the torsion beam is reduced, and the space for arranging the batteries of the electric vehicle is enlarged.
Preferably, the vehicle body further includes an outer rigidity reinforcement, an inner rigidity reinforcement, and a front rigidity reinforcement. The outer vertical side walls of the left connecting intermediate member and the right connecting intermediate member are fixedly connected with the lower end of an outer rigid reinforcing piece respectively, and the upper end of the outer rigid reinforcing piece is fixedly connected with the inner side wall of the corresponding rear longitudinal beam. The inner vertical side walls of the left connecting intermediate member and the right connecting intermediate member are fixedly connected with the lower end of an inner rigid reinforcement respectively, and the upper end of the inner rigid reinforcement is fixedly connected with the inner side wall of the corresponding rear longitudinal beam; the rear end of the front rigid reinforcing piece is fixedly connected with the front side walls of the corresponding left and right connecting intermediary members, and the front end of the front rigid reinforcing piece is fixedly connected with the rear surface of the battery pack outer shell. Further preferably: a plurality of reinforced rigid vertical reinforcing walls are arranged between the middle part of the upper side wall of the battery pack rear end mounting bracket and the inclined wall, and a plurality of reinforced rigid horizontal reinforcing walls are arranged between the middle part of the front side wall of the battery pack rear end mounting bracket and the inclined wall; the upper side walls of the rear end mounting brackets of the left battery pack and the right battery pack are fixedly connected with the corresponding mounting bracket connecting walls through bolt structures. The preferred embodiment can improve the rigidity and reliability of the structure of the present invention.
According to the invention, through the left connecting intermediary member and the right connecting intermediary member, the side wall of the rear end of the outer shell of the battery pack of the electric vehicle can be moved backwards under the condition that the installation position of the torsion beam is not changed, so that the distance between the side wall of the rear end of the outer shell of the battery pack of the electric vehicle and the front ends of the side rods at the left end and the right end of the torsion beam is reduced, and the space for arranging the batteries of the electric vehicle is enlarged. The structure of the invention has good rigidity and reliability.
Drawings
FIG. 1: a schematic bottom view of the structure of the present invention;
in the figure: the battery pack comprises a torsion beam 1, a side rod 1.1, a rear longitudinal beam 2, a battery pack outer shell 3, an inner threshold 4, a left connecting intermediate member 5, an outer rigid reinforcing member 56.1, an inner rigid reinforcing member 56.2, a front rigid reinforcing member 56.3, a right connecting intermediate member 6 and a battery pack rear end mounting bracket 7.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
As shown in the figure, the invention comprises a torsion beam 1, a rear longitudinal beam 2, a battery pack outer shell 3, an inner threshold 4, a left connecting intermediary member 5 and a right connecting intermediary member 6. The left and right connecting medium components are respectively arranged below the left and right rear longitudinal beams of the electric vehicle. The left and right connecting intermediate members each include a horizontal side wall, a front vertical side wall, an outer vertical side wall, and an inner vertical side wall. The upper ends of the front vertical side wall, the outer vertical side wall and the inner vertical side wall are welded and connected with the corresponding lapping surfaces of the horizontal side wall to form an integral structure, and the upper surface of the horizontal side wall is jointed and welded with the lower surface of the rear longitudinal beam; the front ends of the side rods 1.1 on the left and right sides of the torsion beam 1 extend between the outer vertical side wall and the inner vertical side wall of the corresponding left connecting intermediate member 5 or right connecting intermediate member 6 and are hinged with the outer vertical side wall and the inner vertical side wall by a bolt and nut structure. The rear end of the battery pack outer shell 3 is fixedly connected with the front end of the connecting intermediate member 5 by a known structure, and the outer vertical side wall is fixedly connected with the inner threshold 4 by a known structure.
Preferably, the vehicle body further comprises an outer rigidity reinforcing member 56.1, an inner rigidity reinforcing member 56.2 and a front rigidity reinforcing member 56.3. The outer vertical side walls of the left connecting intermediate member 5 and the right connecting intermediate member 6 are fixedly connected with the lower end of an outer rigid reinforcing part 56.1 in a welding mode, and the upper end of the outer rigid reinforcing part 56.1 is fixedly connected with the inner side wall of the corresponding rear longitudinal beam in a welding mode. The inner vertical side walls of the left connecting intermediate member 5 and the right connecting intermediate member 6 are fixedly connected with the lower end of an inner rigid reinforcement 56.2, and the upper end of the inner rigid reinforcement 56.2 is fixedly connected with the inner side wall of the corresponding rear longitudinal beam. The rear end of the front rigid reinforcement 56.3 is fixedly connected to the front side walls of the corresponding left and right connection intermediate members, and the front end of the front rigid reinforcement 56.3 is fixedly connected to the rear surface of the battery pack case 3. Furthermore, the battery pack rear end mounting bracket comprises a left battery pack rear end mounting bracket 7 and a right battery pack rear end mounting bracket 7; the front end of the upper side wall of the battery pack rear end mounting bracket 7 is connected with the upper end of the front side wall at a right angle, and the rear end of the upper side wall of the battery pack rear end mounting bracket 7 is connected with the lower end of the front side wall of the battery pack rear end mounting bracket 7 through an inclined wall; the lower extreme of the inside wall of left and right connection intermediary component 5, 6 inwards buckles and forms the installing support connecting wall, and the last lateral wall and the corresponding installing support connecting wall laminating of two battery package rear end installing supports 7 link firmly about, and the preceding side of two battery package rear end installing supports 7 links firmly with the lower extreme of battery package shell body 3 about. A plurality of reinforced rigid vertical reinforced walls are arranged between the middle part of the upper side wall of the battery pack rear end mounting bracket 7 and the inclined wall. A plurality of reinforced rigid horizontal reinforcing walls are arranged between the middle part of the front side wall of the battery pack rear end mounting bracket 7 and the inclined wall. The upper side walls of the rear end mounting brackets 7 of the left battery pack and the right battery pack are fixedly connected with the corresponding mounting bracket connecting walls by bolt structures.
The above embodiments are merely preferred embodiments of the present invention, and not intended to limit the structure and scope of the invention. Indeed, many equivalent variations in the shapes, constructions and design objectives of the devices according to the present invention are possible. Therefore, all equivalent changes in the shapes, structures and design objectives of the present invention are intended to be covered by the present invention, and all such equivalent changes are intended to be protected by the present invention.
Claims (6)
1. A connecting structure for two ends of a torsion beam of an electric vehicle and a left rear longitudinal beam and a right rear longitudinal beam comprises the torsion beam (1), the rear longitudinal beams (2), a battery pack outer shell (3) and an inner doorsill (4); the method is characterized in that: also comprises a left connecting intermediary component (5) and a right connecting intermediary component (6); the left and right connecting intermediary members are respectively arranged below the left and right rear longitudinal beams of the electric vehicle; the left and right connecting intermediary members comprise a horizontal side wall, a front vertical side wall, an outer vertical side wall and an inner vertical side wall; the upper ends of the front vertical side wall, the outer vertical side wall and the inner vertical side wall are welded with the corresponding lapping surfaces of the horizontal side wall, and the upper surface of the horizontal side wall is jointed and welded with the lower surface of the rear longitudinal beam; the front ends of the side rods (1.1) on the left side and the right side of the torsion beam (1) extend between and are hinged with the outer vertical side wall and the inner vertical side wall of the corresponding left connecting intermediate member (5) or right connecting intermediate member (6); the rear end of the battery pack outer shell (3) is fixedly connected with the front end of the connecting intermediate member (5), and the outer vertical side wall is connected with the inner doorsill (4).
2. The connecting structure of two ends of a torsion beam of an electric vehicle and two left and right rear longitudinal beams according to claim 1, which is characterized in that: the device also comprises an outer rigidity reinforcing piece (56.1), an inner rigidity reinforcing piece (56.2) and a front rigidity reinforcing piece (56.3); the outer vertical side walls of the left connecting intermediate member (5) and the right connecting intermediate member (6) are fixedly connected with the lower end of an outer rigid reinforcing piece (56.1), and the upper end of the outer rigid reinforcing piece (56.1) is fixedly connected with the inner side wall of the corresponding rear longitudinal beam; the inner vertical side walls of the left connecting intermediate member (5) and the right connecting intermediate member (6) are fixedly connected with the lower end of an inner rigid reinforcement (56.2), and the upper end of the inner rigid reinforcement (56.2) is fixedly connected with the inner side wall of the corresponding rear longitudinal beam; the rear end of the front rigid reinforcing piece (56.3) is fixedly connected with the front side walls of the corresponding left and right connecting intermediate members, and the front end of the front rigid reinforcing piece (56.3) is fixedly connected with the rear surface of the battery pack outer shell (3).
3. The connecting structure of two ends of a torsion beam of an electric vehicle and two left and right rear longitudinal beams according to claim 1, which is characterized in that: the battery pack is characterized by also comprising a left battery pack mounting bracket and a right battery pack mounting bracket (7); the front end of the upper side wall of the battery pack rear end mounting bracket (7) is connected with the upper end of the front side wall at a right angle, and the rear end of the upper side wall of the battery pack rear end mounting bracket (7) is connected with the lower end of the front side wall of the battery pack rear end mounting bracket (7) through an inclined wall; the lower ends of the inner side walls of the left and right connecting intermediary members (5 and 6) are inwards bent to form mounting bracket connecting walls, the upper side walls of the left and right battery pack rear end mounting brackets (7) are fixedly connected with the corresponding mounting bracket connecting walls in an attaching manner, and the front side ends of the left and right battery pack rear end mounting brackets (7) are fixedly connected with the lower ends of the battery pack outer shells (3).
4. The connecting structure of the two ends of the torsion beam of the electric vehicle and the left and right rear longitudinal beams as claimed in claim 3, wherein: a plurality of rigid vertical reinforcing walls are arranged between the middle part of the upper side wall of the battery pack rear end mounting bracket (7) and the inclined wall.
5. The connecting structure of the two ends of the torsion beam of the electric vehicle and the left and right rear longitudinal beams as claimed in claim 3, wherein: a plurality of reinforced rigid horizontal reinforcing walls are arranged between the middle part of the front side wall of the battery pack rear end mounting bracket (7) and the inclined wall.
6. The connecting structure of the two ends of the torsion beam of the electric vehicle and the left and right rear longitudinal beams as claimed in claim 3, wherein: the upper side walls of the left and right battery pack rear end mounting brackets (6) are fixedly connected with the corresponding mounting bracket connecting walls by bolt structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382381.XA CN111688810B (en) | 2020-05-08 | 2020-05-08 | Connecting structure for two ends of torsion beam of electric vehicle and left and right rear longitudinal beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382381.XA CN111688810B (en) | 2020-05-08 | 2020-05-08 | Connecting structure for two ends of torsion beam of electric vehicle and left and right rear longitudinal beams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111688810A true CN111688810A (en) | 2020-09-22 |
| CN111688810B CN111688810B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010382381.XA Active CN111688810B (en) | 2020-05-08 | 2020-05-08 | Connecting structure for two ends of torsion beam of electric vehicle and left and right rear longitudinal beams |
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| CN (1) | CN111688810B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114572308A (en) * | 2020-11-30 | 2022-06-03 | 本田技研工业株式会社 | Body structure of electric automobile |
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| US20040159481A1 (en) * | 2001-09-05 | 2004-08-19 | L&L Products, Inc. | Adjustable reinforced structural assembly and method of use therefor |
| CN103813919A (en) * | 2011-09-20 | 2014-05-21 | 丰田自动车株式会社 | Vehicular battery mounting structure |
| CN205255929U (en) * | 2015-11-27 | 2016-05-25 | 郑州日产汽车有限公司 | CDV motorcycle type torsion beam drags arm installing support |
| CN108790760A (en) * | 2018-05-16 | 2018-11-13 | 浙江零跑科技有限公司 | A kind of Battery pack installation structure of electric vehicle |
| CN109204561A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Body structure and vehicle |
| CN210027588U (en) * | 2019-03-21 | 2020-02-07 | 广州汽车集团股份有限公司 | Torsion beam mounting structure, automobile body skeleton and car |
-
2020
- 2020-05-08 CN CN202010382381.XA patent/CN111688810B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040159481A1 (en) * | 2001-09-05 | 2004-08-19 | L&L Products, Inc. | Adjustable reinforced structural assembly and method of use therefor |
| CN103813919A (en) * | 2011-09-20 | 2014-05-21 | 丰田自动车株式会社 | Vehicular battery mounting structure |
| CN205255929U (en) * | 2015-11-27 | 2016-05-25 | 郑州日产汽车有限公司 | CDV motorcycle type torsion beam drags arm installing support |
| CN109204561A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Body structure and vehicle |
| CN108790760A (en) * | 2018-05-16 | 2018-11-13 | 浙江零跑科技有限公司 | A kind of Battery pack installation structure of electric vehicle |
| CN210027588U (en) * | 2019-03-21 | 2020-02-07 | 广州汽车集团股份有限公司 | Torsion beam mounting structure, automobile body skeleton and car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114572308A (en) * | 2020-11-30 | 2022-06-03 | 本田技研工业株式会社 | Body structure of electric automobile |
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| CN111688810B (en) | 2021-08-31 |
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