Beam structure, inner frame beam assembly, box body and power battery pack

Abstract

The utility model relates to the technical field of electric vehicles, and discloses a beam structure, an inner frame beam assembly, a box body and a power battery pack, and the beam structure comprises a groove which is formed in a part of length of a beam body along the length direction and is provided with an upward opening; the grooves are located in the positions, with insufficient rigidity, of the corresponding box body. The bottom of the groove is connected with the top face of the box body. The groove is formed in the beam body, the bottom of the groove is connected with the top face of the box body, the peripheral structure forming the groove on the beam body can enhance the rigidity of the box body at the position corresponding to the periphery of the groove, and due to the fact that the groove is located in the position, insufficient in rigidity, of the corresponding box body, the rigidity of the position, insufficient in rigidity, of the box body can be enhanced; through combination of the beam structure and the box body, the bearing capacity of the box body is improved, and the grooves are simple in structure, so that production and manufacturing are facilitated, and the cost is reduced; and the mass of the beam body is basically not increased, so that the energy density of the power battery pack applied to the electric automobile is improved, and the requirement of light weight is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric vehicle technology field, concretely relates to a beam structure, inner frame beam subassembly, box and power battery pack. BACKGROUND

[0002] The power battery pack of electric passenger car generally mainly includes: box, battery module, heat management system and electrical system etc. The box generally includes: box body, inner frame beam subassembly and lifting lug etc. The box body provides firm and reliable space arrangement and safety protection for the battery module, heat management system and electrical system. The inner frame beam subassembly is used for improving the rigidity of the box body, and then improves the carrying capacity of the whole box. The inner frame beam subassembly generally includes: front cross beam, left longitudinal beam, rear cross beam and right longitudinal beam connected in sequence.

[0003] For the existing battery module, the battery in the rear row is installed in left-right asymmetry, the stress of the left longitudinal beam and the right longitudinal beam is uneven, which easily leads to insufficient rigidity of one side longitudinal beam, reduces the rigidity of the box body, and then reduces the carrying capacity of the whole box. As shown in the prior art, by increasing a plurality of inner support supports 2 on the insufficient rigidity longitudinal beam 1, the rigidity requirement of the longitudinal beam can be met, but the above-mentioned way of improving the rigidity of the longitudinal beam is relatively complex, which is not conducive to production and manufacturing. Figure 1 UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a beam structure to solve the problem that the prior art increases inner support supports on the inner side of the insufficient rigidity longitudinal beam to improve the rigidity of the longitudinal beam, which is relatively complex and is not conducive to production and manufacturing.

[0005] In the first aspect, the utility model provides a beam structure, which includes:

[0006] The beam body is provided with a groove opening upward in part length along the length direction; the groove is located at the position of insufficient rigidity on the box body; the bottom of the groove is connected with the top surface of the box body. Advantageous effects: the application adopts the above technical scheme, the groove is arranged on the beam body, the bottom of the groove is connected with the top surface of the box body, the peripheral structure of the groove on the beam body can strengthen the rigidity of the box body at the corresponding peripheral position of the groove, the position of insufficient rigidity on the box body can be strengthened in rigidity since the groove is located at the position of insufficient rigidity on the box body, the carrying capacity of the box is improved through the combination of the beam structure and the box of the application, the structure of the groove is simple, which is conducive to production and manufacturing and cost reduction; and the quality of the beam body is basically not increased, the energy density of the power battery pack applied on the electric vehicle is improved, and the requirement of light weight is met.

[0007] ​Optionally, the width of the groove portion arranged on the beam body is greater than the width of the beam body without the groove portion, and the size of the groove increases with the increase of the width of the beam body.

[0008] Optionally, the depth of the groove is the same as the height of the beam body.

[0009] Optionally, the beam body is a stamping part, and the groove is a stamping structure.

[0010] Optionally, the beam body and the groove are an integral stamping structure.

[0011] In a second aspect, the utility model also provides a kind of inner frame beam assembly, comprising:

[0012] front cross beam;

[0013] rear cross beam, with the front cross beam is arranged mutually parallel;

[0014] left side frame, two ends are connected with the end of the left side of the front cross beam, the end of the left side of rear cross beam respectively;

[0015] right side frame, with the left side frame is arranged mutually parallel;The two ends of the right side frame are connected with the end of the right side of the front cross beam, the end of the right side of rear cross beam respectively;The front cross beam, rear cross beam, left side frame and right side frame are connected with box body;The right side frame adopts the beam structure.

[0016] Optionally, further comprising:

[0017] at least one intermediate cross beam, with the front cross beam is arranged mutually parallel;The intermediate cross beam is located between the front cross beam and the rear cross beam;And the two ends of the intermediate cross beam are connected with left side frame and right side frame respectively.

[0018] Optionally, the intermediate cross beam is first intermediate cross beam and second intermediate cross beam arranged at intervals.

[0019] In a third aspect, the utility model also provides a kind of box, comprising:

[0020] the inner frame beam assembly;

[0021] box body, connected with the inner frame beam assembly.

[0022] A plurality of lifting lugs are respectively arranged on the outer edges of the box body.

[0023] In a fourth aspect, the utility model also provides a power battery pack, including:

[0024] The recess is arranged close to the rear end of the right longitudinal beam;

[0025] The battery module is arranged in the box body;

[0026] The thermal management system is arranged in the box body;

[0027] The electrical system is arranged in the box body. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0029] Figure 1 It is the three-dimensional structure schematic view of the inner frame beam assembly in the prior art;

[0030] Figure 2 It is the three-dimensional structure schematic view of the inner frame beam assembly provided in the embodiment of the utility model;

[0031] Figure 3 It is the three-dimensional structure schematic view of the beam structure provided in the embodiment of the utility model;

[0032] Figure 4 It is the three-dimensional structure schematic view of the box body provided in the embodiment of the utility model.

[0033] MARKED DESCRIPTION OF DRAWINGS:

[0034] 1, longitudinal beam; 2, inner support bracket; 3, beam body; 4, recess; 5, box body; 6, front cross beam; 7, rear cross beam; 8, left longitudinal beam; 9, right longitudinal beam; 10, first intermediate cross beam; 11, second intermediate cross beam; 12, lifting lug. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] As shown in a specific embodiment of the beam structure shown in Figure 3 and Figure 4 , comprising: a beam body 3, that is Figure 4 The body of the right longitudinal beam 9 in

[0037] As shown in Figure 3 , the beam body 3 is provided with a groove 4 opening upward in part of the length in the length direction. In combination with Figure 4 , the groove 4 is located at a position of insufficient rigidity on the corresponding box body 5; the bottom of the groove 4 is connected with the top surface of the box body 5, specifically, the bottom of the groove 4 is connected with the top surface of the box body 5 through welding, and the welding can be resistance welding.

[0038] As shown in Figure 3 , the width of the groove 4 part corresponding to the beam body 3 is greater than the width of the part of the beam body 3 not provided with the groove 4, and the size of the groove 4 increases with the increase of the width of the beam body 3. The depth of the groove 4 is the same as the height of the beam body 3. In combination with Figure 4 , the beam body 3 is a stamping part; the groove 4 is a stamping structure. Further, the beam body 3 and the groove 4 are an integral stamping structure.

[0039] As shown in Figure 2 and Figure 4 , a specific embodiment of the inner frame beam assembly comprises: a front cross beam 6, a rear cross beam 7, a left longitudinal beam 8, a right longitudinal beam 9 and at least one intermediate cross beam.

[0040] As shown in Figure 2 , the rear cross beam 7 and the front cross beam 6 are arranged in parallel with each other. The two ends of the left longitudinal beam 8 are connected with the left end of the front cross beam 6 and the left end of the rear cross beam 7 respectively; the right longitudinal beam 9 is arranged in parallel with the left longitudinal beam 8; the two ends of the right longitudinal beam 9 are connected with the right end of the front cross beam 6 and the right end of the rear cross beam 7 respectively. In combination with Figure 4As shown, the front crossbeam 6, rear crossbeam 7, left longitudinal beam 8, and right longitudinal beam 9 are all connected to the box body 5; the right longitudinal beam 9 adopts the aforementioned beam structure. The intermediate crossbeam is arranged parallel to the front crossbeam 6; the intermediate crossbeam is located between the front crossbeam 6 and the rear crossbeam 7; and both ends of the intermediate crossbeam are connected to the left longitudinal beam 8 and the right longitudinal beam 9, respectively. Specifically, the intermediate crossbeam consists of a first intermediate crossbeam 10 and a second intermediate crossbeam 11 spaced apart, and the right end of the second intermediate crossbeam 11 can be positioned close to the groove of the right longitudinal beam 9. Specifically, the connection between the front crossbeam 6, rear crossbeam 7, left longitudinal beam 8, right longitudinal beam 9, and intermediate crossbeam can be achieved by welding, and the welding can be MIG welding. The front crossbeam 6 is perpendicularly connected to the left longitudinal beam 8, and the intermediate crossbeam is perpendicularly connected to the left longitudinal beam 8.

[0041] like Figure 4 One specific embodiment of the box shown includes: the inner frame beam assembly, the box body 5, and a plurality of lifting lugs 12. The box body 5 is a stamped part, and the box body 5 is square and adapted to the inner frame beam assembly.

[0042] The box body 5 is connected to the inner frame beam assembly; specifically, the box body 5 and the inner frame beam assembly are connected by welding, which can be MIG welding and / or resistance welding. Multiple lifting lugs 12 are respectively disposed on the outer edge of the box body 5. Specifically, the lifting lugs 12 can be connected to the box body 5 by resistance welding. Two spaced lifting lugs 12 are provided on the front edge of the box body 5, two spaced lifting lugs 12 are provided on the rear edge of the box body 5, two spaced lifting lugs 12 are provided on the left edge of the box body 5, and two spaced lifting lugs 12 are provided on the right edge of the box body 5. The box body can be installed inside the body of an electric vehicle via the lifting lugs 12. The electric vehicle can be an electric passenger vehicle, generally referring to a pure electric passenger vehicle. The lifting lug 12 can be a plate with two connecting holes.

[0043] Combination Figure 4 As shown, this utility model also provides a power battery pack, including: the aforementioned housing, battery module, thermal management system, and electrical system. The battery module, thermal management system, and electrical system are all housed within the housing, specifically installed within the housing using fasteners, such as bolts. The groove 4 on the right longitudinal beam 9 is located near the rear end of the right longitudinal beam 9.

[0044] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A beam structure, characterized by include: The beam body (3) has an upward-opening groove (4) along a portion of its length; the groove (4) is located at a position on the corresponding box body (5) where the rigidity is insufficient; the bottom of the groove (4) is connected to the top surface of the box body (5).

2. The beam structure of claim 1, wherein The width of the portion of the beam body (3) corresponding to the groove (4) is greater than the width of the portion of the beam body (3) without the groove (4), and the size of the groove (4) increases with the increase of the width of the beam body (3).

3. The beam structure of claim 1, wherein, The depth of the groove (4) is the same as the height of the beam body (3).

4. Beam structure according to any of claims 1 - 3, characterized in that The beam body (3) is a stamped part; the groove (4) is a stamped structure.

5. The beam structure of claim 4, wherein, The beam body (3) and the groove (4) are integral stamping structures.

6. An inner frame beam assembly characterized by, include: Front crossbeam (6); The rear crossbeam (7) is arranged parallel to the front crossbeam (6); The left longitudinal beam (8) is connected at both ends to the left end of the front crossbeam (6) and the left end of the rear crossbeam (7), respectively. The right longitudinal beam (9) is arranged parallel to the left longitudinal beam (8); the two ends of the right longitudinal beam (9) are respectively connected to the right end of the front crossbeam (6) and the right end of the rear crossbeam (7); the front crossbeam (6), the rear crossbeam (7), the left longitudinal beam (8) and the right longitudinal beam (9) are all connected to the box body (5); the right longitudinal beam (9) adopts the beam structure of any one of claims 1-5.

7. The inner frame rail assembly of claim 6, wherein, Also includes: At least one intermediate crossbeam is arranged parallel to the front crossbeam (6); The intermediate crossbeam is located between the front crossbeam (6) and the rear crossbeam (7); and the two ends of the intermediate crossbeam are connected to the left longitudinal beam (8) and the right longitudinal beam (9) respectively.

8. The inner frame rail assembly of claim 7, wherein, The intermediate crossbeams are a first intermediate crossbeam (10) and a second intermediate crossbeam (11) that are spaced apart.

9. A case characterized by comprising: include: The inner frame beam assembly according to any one of claims 6-8; The box body (5) is connected to the inner frame beam assembly; Multiple lifting lugs (12) are respectively set on the outer edge of the box body (5).

10. A power battery pack, characterized in that, include: The box body according to claim 9, wherein the groove (4) is disposed near the rear end of the right longitudinal beam (9); The battery module is housed within the casing. The thermal management system is installed inside the enclosure; The electrical system is housed within the enclosure.

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