Battery box for vehicle

Abstract

The utility model relates to the field of electric automobile accessories, in particular to a vehicle battery box which comprises a box body and a box cover detachably connected with the box body, the box body comprises a bottom plate and a frame, protruding cross beams and longitudinal beams are arranged on the bottom plate, the height of the cross beams relative to the bottom plate is lower than that of the longitudinal beams relative to the bottom plate, and the cross beams and the longitudinal beams are arranged in a staggered mode. The battery box further comprises a connecting assembly for connecting the longitudinal beam and the box cover, the longitudinal beam and the box cover are connected through the connecting assembly, the box body is not subjected to traumatic change, so that the strength and the sealing performance of the box body are improved, a certain supporting force is provided for the box cover through the connecting assembly, and the rigidity of the box cover can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle accessories, in particular to a vehicle battery box. Background Art

[0002] In order to facilitate the maintenance of the battery pack components placed in the vehicle battery box, the box cover and the box body are usually detachably connected. At present, most vehicle-mounted power battery boxes have a connection hole in the middle of the box cover and the box body, and the box cover and the box body are connected by a long screw. However, the through holes in the box cover and the box body will reduce the rigidity of the box cover to a certain extent, and the strength and sealing of the box body will also be reduced. Therefore, designing a method that does not cause traumatic changes to the box body, meets the requirements of detachability and ensures the connection strength, while improving the box strength, sealing performance and box cover rigidity of the battery box is a problem that still needs to be solved in the field of vehicle battery box technology. Utility Model Content

[0003] The utility model aims to solve the problem of not making any traumatic changes to the box body and improving the box body strength, sealing performance and box cover rigidity of the vehicle battery box.

[0004] In order to solve the above problems, the utility model proposes a vehicle battery box, comprising a box body and a box cover detachably connected to the box body, the box body comprising a bottom plate and a frame, the bottom plate is provided with protruding longitudinal beams and cross beams, the height of the cross beam relative to the bottom plate is lower than the height of the longitudinal beam relative to the bottom plate, the cross beams and the longitudinal beams are staggered to divide the box body into a plurality of accommodating cavities, and the battery box also includes a connecting component connecting the longitudinal beam and the box cover.

[0005] Furthermore, the connecting assembly includes a fixing bracket, a first connecting piece connecting the fixing bracket and the box cover, and a second connecting piece connecting the fixing bracket and the longitudinal beam.

[0006] Furthermore, the fixing bracket includes a first connecting portion for connecting to the box cover, a second connecting portion for connecting to the longitudinal beam, and a supporting portion connecting the first connecting portion and the second connecting portion.

[0007] Preferably, the first connecting part and the second connecting part are both long flat plates, the first connecting part is provided with a first connecting hole for connecting the first connecting member, and the second connecting part is provided with a second connecting hole for passing the second connecting member. The supporting part comprises a top plate and a side plate, the top plate is fixedly connected to the first connecting part, the top plate extends downward along all sides to form the side plate, and the outer wall of the side plate is fixedly connected to the second connecting part. A reinforcing rib is provided inside the supporting part, the top plate is recessed downward along the center line direction of the first connecting hole to form a top plate receiving hole, the first connecting hole and the top plate receiving hole have the same diameter, and the top plate receiving hole is used to install the first connecting member.

[0008] Preferably, the supporting portion is columnar and is integrally formed with the first connecting portion and the second connecting portion.

[0009] Preferably, the first connection part is folded downward at the edge in the vertical length direction and extends to the surface of the second connection part to form the support part, and the support part is plate-shaped. The support part includes a first support part and a second support part, the first support part and the second support part are symmetrically arranged relative to the geometric center line of the first connection part, and the angle between the length direction of the first support part and the second support part and the length direction of the first connection part is 60-120°.

[0010] Furthermore, the vehicle battery box also includes a first gasket abutting between the box cover and the first connecting member, a second gasket abutting between the box cover and the first connecting part, and the first connecting part extends out at the first connecting hole to form a sealing boss, a through hole connected to the first connecting hole is provided on the sealing boss, and the second gasket is sleeved on the outer wall of the sealing boss.

[0011] Compared with the prior art, the technical solution of the utility model has the following beneficial effects: the longitudinal beam and the box cover are connected by a connecting assembly without causing any traumatic changes to the box body, thereby improving the strength and sealing performance of the box body, and a certain supporting force is provided to the box cover by a fixed bracket, thereby improving the rigidity of the box cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional schematic diagram of the connecting component in Example 1 of the utility model.

[0014] Figure 2 This is a schematic diagram of the assembly of the fixed bracket and the box body in Example 1 of the utility model.

[0015] Figure 3 It is a three-dimensional schematic diagram of the battery box in Example 1 of the utility model.

[0016] Figure 4 It is a three-dimensional schematic diagram of the fixing bracket in Example 1 of the utility model.

[0017] Figure 5 for Figure 4 A three-dimensional diagram from another perspective.

[0018] Figure 6 It is a partial cross-sectional view of the battery box in Example 1 of the utility model.

[0019] Figure 7 This is a cross-sectional view of the fixing bracket in Example 1 of the utility model.

[0020] Figure 8 It is a three-dimensional schematic diagram of the fixing bracket in Example 2 of the utility model.

[0021] In the figure:

[0022] 1-box body; 11-bottom plate; 12-frame; 13-crossbeam; 14-longitudinal beam; 2-box cover; 3-fixing bracket; 31-first connecting part; 311-first connecting hole; 312-sealing boss; 32-supporting part; 321-top plate; 322-side plate; 323-reinforcing rib; 324-top plate accommodating hole; 33-second connecting part; 331-second connecting hole; 41-first connecting member; 42-second connecting member; 51-first gasket; 52-second gasket. DETAILED DESCRIPTION

[0023] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The orientation or position relationship indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the utility model.

[0025] The terms "first", "second", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0026] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0027] Example 1

[0028] See also Figure 2 , Figure 3 The utility model proposes a vehicle battery box for placing and protecting the battery pack assembly in an electric vehicle, comprising a box body 1 and a box cover 2 detachably connected to the box body 1. The box body 1 is a box-shaped structure with an opening, comprising a bottom plate 11 and a frame 12. The bottom plate 11 is provided with a protruding longitudinal beam 13 and a cross beam 14. The height of the cross beam 14 relative to the bottom plate 11 is lower than the height of the longitudinal beam 13 relative to the bottom plate 11. The cross beam 14 and the longitudinal beam 13 extend to the inner wall of the frame 12 and are arranged in a staggered manner, dividing the box body 1 into a plurality of accommodating cavities. The accommodating cavities are used to place the battery pack assembly. The cross beam 14 and the longitudinal beam 13 are used to enhance the strength of the box body 1, and the longitudinal beam 13 can play a certain supporting role on the box cover 2, thereby improving the overall structural strength of the battery box. According to the size and number of the battery pack assembly, the number of the longitudinal beam 13 and the cross beam 14 can be one or more. Preferably, the number of the longitudinal beam 13 is 1 to 5, and the number of the cross beam 14 is one.

[0029] Furthermore, the battery box further includes a connection assembly connecting the longitudinal beam 13 and the box cover 2, the connection assembly includes a fixing bracket 3, a first connection member 41 connecting the fixing bracket 3 and the box cover 2, and a second connection member 42 connecting the fixing bracket 3 and the longitudinal beam 13, and the first connection member 41 and the second connection member 42 can both be screws, etc. A first through hole for the first connection member 41 to pass through is provided on the surface of the box cover 2, and a second through hole for the second connection member 42 to pass through is provided on the surface of the longitudinal beam 13.

[0030] like Figure 1 As shown, the fixed bracket 3 is a shell with an opening as a whole, including a top surface and side surfaces. The top surface extends downward along the four sides to form four closed side surfaces connected end to end. The top surface can be rectangular, elliptical, etc., preferably a rounded rectangle, and the width of the top surface is preferably not more than the thickness of the longitudinal beam 13. The angles between the top surface and the four side surfaces can be 60 to 120°. Among the four side surfaces of the fixed bracket 3, the adjacent side surfaces can be perpendicular to each other, that is, the fixed bracket 3 is a rectangular box as a whole. Preferably, the two side surfaces adjacent to the long side of the top surface are parallel to each other, and the two side surfaces adjacent to the short side of the top surface have a certain angle, that is, the two side surfaces adjacent to the long side of the top surface of the fixed bracket 3 are trapezoidal.

[0031] According to the size of the battery box and the number of longitudinal beams 13, the number of the fixing brackets 3 can be one or more, such as Figure 2 As shown, in a specific embodiment, the number of longitudinal beams 13 is 4, and one or more fixing brackets 3 are respectively arranged on the two or three longitudinal beams 13 near the middle. Preferably, two fixing brackets 3 are arranged at intervals on the longitudinal beams 13, and the fixing brackets 3 are distributed on the box cover 2 in the middle of the box cover 2 as a whole. Since the box cover 2 is large in size and thin in thickness, the side of the edge of the box cover 2 close to the box body 1 abuts against the surface of the frame 12 of the box body 1 away from the bottom plate 11. By relatively dispersing the fixing brackets 3 in the middle area of ​​the box cover 2, a certain support force can be exerted on the box cover 2, thereby improving the rigidity of the box cover 2; and through the structure of the hollow shell, when providing support force to the box cover 2, it is not necessary to raise the height of the longitudinal beam 13, thereby reducing the overall weight of the battery box, and the box cover 2 and the longitudinal beam 13 are connected by the connecting assembly, which can avoid opening a through hole on the box body 1, thereby improving the structural strength of the box body 1.

[0032] like Figure 4 As shown, further, the fixing bracket 3 includes a first connecting portion 31 for connecting the box cover 2, a second connecting portion 33 for connecting the longitudinal beam 13, and a supporting portion 32 connecting the first connecting portion 31 and the second connecting portion 33. Preferably, the first connecting portion 31 and the second connecting portion 33 are both long flat plates, the first connecting portion 31 is provided with a first connecting hole 311 for connecting the first connecting member 41, the second connecting portion 33 is provided with a second connecting hole 331 for passing the second connecting member 42, and the first connecting hole 311 is a threaded hole matched with the first connecting member 41, and the second connecting hole 331 is a threaded hole matched with the second connecting member 42. In addition, the first connecting hole 311 is connected with the first through hole, and the second connecting hole 331 is connected with the second through hole.

[0033] Preferably, the support portion 32 includes a top plate 321 and a side plate 322. The top plate 321 is fixedly connected to the first connection portion 31. The top plate 321 extends downward along all sides to form the side plate 322. The outer wall of the side plate 322 is fixedly connected to the second connection portion 33. The top plate 321 and the first connection portion 31, the side plate 322 and the second connection portion 33 can be connected by bolts, screws or welding. Preferably, the top plate 321 and the first connection portion 31, the side plate 322 and the second connection portion 33 are integrally formed.

[0034] like Figure 5 , Figure 7As shown, preferably, a reinforcing rib 323 is provided inside the support portion 32, and the reinforcing rib 323 can further improve the support strength of the fixing bracket 3 on the box cover 2 and the connection strength of the box cover 2 and the box body 1. The top plate 321 is recessed downward along the center line direction of the first connecting hole 311 to form a top plate receiving hole 324. The first connecting hole 311 and the top plate receiving hole 324 have the same diameter. The top plate receiving hole 324 is used to install the first connecting member 41. The part of the top plate receiving hole 324 close to the first connecting hole 311 is provided with a thread that matches the first connecting member 41. During installation, the top plate receiving hole 324 reserves necessary space for the installation of the first connecting member 41 in the first connecting hole 311, and further strengthens the connection strength between the first connecting member 41 and the fixing bracket 3.

[0035] like Figure 1 , Figure 6 As shown, the vehicle battery box also includes a second gasket 52 abutting against the box cover 2 and the first connecting part 31, a first gasket 51 abutting between the box cover 2 and the first connecting member 41, and the first connecting part 31 extends out at the first connecting hole 311 to form a sealing boss 312, and a through hole connected to the first connecting hole 311 is provided on the sealing boss 312, and the second gasket 52 is sleeved on the outer wall of the sealing boss 312.

[0036] The first gasket 51 and the second gasket 52 can be in the shape of a rectangle or a rounded rectangle, and can be made of a material with a certain elasticity such as a rubber pad. The first gasket 51 and the second gasket 52 can seal the connection between the box cover 2 and the fixing bracket 3, and can play a certain buffering and protective role on the box cover 2, thereby avoiding damage to the surface of the box cover 2 during the installation process, and further improving the overall strength of the battery box.

[0037] During assembly, first fix the fixing bracket 3 to the longitudinal beam 13 inside the box body 1 through the second connecting member 42. After completing the assembly of the battery pack and other components in the box body 1, install the box cover 2. Finally, connect the box cover 2 and the fixing bracket 3 through the first connecting member 41.

[0038] Example 2

[0039] See also Figure 8 The main difference between this embodiment and the first embodiment is that the support portion 32 of the fixing bracket 3 is columnar and is integrally formed with the first connecting portion 31 and the second connecting portion 33 .

[0040] Example 3

[0041] The main difference between this embodiment and the above embodiment is that the first connection portion 31 of the fixing bracket 3 is folded downward at the edge in the vertical length direction and extends to the surface of the second connection portion 33 to form a support portion 32, and the support portion 32 is plate-shaped. The support portion 32 includes a first support portion 32 and a second support portion 32, and the first support portion 32 and the second support portion 32 are symmetrically arranged relative to the geometric center line of the first connection portion 31, and the angle between the length direction of the first support portion 32 and the second support portion 32 and the length direction of the first connecting member 41 is 60 to 120 degrees.

[0042] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle battery box, comprising a box body (1) and a box cover (2) detachably connected to the box body (1), wherein the box body (1) comprises a bottom plate (11) and a frame (12), characterized in that: The bottom plate (11) is provided with protruding longitudinal beams (13) and transverse beams (14); the height of the transverse beams (14) relative to the bottom plate (11) is lower than the height of the longitudinal beams (13) relative to the bottom plate (11); the transverse beams (14) and the longitudinal beams (13) are arranged alternately so that the box body (1) is divided into a plurality of accommodating cavities; the battery box also includes a connecting component connecting the longitudinal beams (13) and the box cover (2).

2. The vehicle battery box according to claim 1, characterized in that: The connection assembly comprises a fixing bracket (3), a first connecting member (41) connecting the fixing bracket (3) and the box cover (2), and a second connecting member (42) connecting the fixing bracket (3) and the longitudinal beam (13).

3. The vehicle battery box according to claim 2, characterized in that: The fixing bracket (3) comprises a first connecting portion (31) for connecting to the box cover (2), a second connecting portion (33) for connecting to the longitudinal beam (13), and a supporting portion (32) connecting the first connecting portion (31) and the second connecting portion (33).

4. The vehicle battery box according to claim 3, characterized in that: The first connecting portion (31) and the second connecting portion (33) are both long flat plates. The first connecting portion (31) is provided with a first connecting hole (311) for connecting the first connecting member (41), and the second connecting portion (33) is provided with a second connecting hole (331) for allowing the second connecting member (42) to pass through.

5. The vehicle battery box according to claim 4, characterized in that: The supporting portion (32) comprises a top plate (321) and a side plate (322); the top plate (321) is fixedly connected to the first connecting portion (31); the top plate (321) extends downward along four sides to form the side plate (322); and the outer wall of the side plate (322) is fixedly connected to the second connecting portion (33).

6. The vehicle battery box according to claim 5, characterized in that: A reinforcing rib (323) is provided inside the support portion (32); the top plate (321) is recessed downward along the center line direction of the first connecting hole (311) to form a top plate accommodating hole (324); the first connecting hole (311) and the top plate accommodating hole (324) have the same diameter; the top plate accommodating hole (324) is used to install the first connecting member (41).

7. The vehicle battery box according to claim 4, characterized in that: The supporting portion (32) is columnar and is integrally formed with the first connecting portion (31) and the second connecting portion (33).

8. The vehicle battery box according to claim 4, characterized in that: The first connection portion (31) is folded downward at an edge in a vertical length direction and extends to the surface of the second connection portion (33) to form the support portion (32), and the support portion (32) is plate-shaped.

9. The vehicle battery box according to claim 8, characterized in that: The support portion (32) comprises a first support portion and a second support portion, the first support portion and the second support portion are symmetrically arranged relative to the geometric center line of the first connecting portion (31), and the angles between the length directions of the first support portion and the second support portion and the length direction of the first connecting member (41) are both 60 to 120 degrees.

10. The vehicle battery box according to any one of claims 4 to 9, characterized in that: The invention also comprises a first gasket (51) abutting between the box cover (2) and the first connecting member (41), and a second gasket (52) abutting between the box cover (2) and the first connecting portion (31); the first connecting portion (31) extends out at the first connecting hole (311) to form a sealing boss (312); a through hole communicating with the first connecting hole (311) is provided on the sealing boss (312); and the second gasket (52) is sleeved on the outer wall of the sealing boss (312).

Images