Battery pack tray, battery pack and automobile

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery pack tray, a battery pack and an automobile. The battery pack tray disclosed by the utility model comprises a frame, a bottom plate and a bottom protection plate which are sequentially stacked, and further comprises at least two hanging beams which are respectively and fixedly connected with two opposite sides of the frame, and a plurality of reinforcing beams which are arranged at intervals along the axial direction of the hanging beams, one side of each reinforcing beam is fixedly connected with the frame, and the other side of each reinforcing beam is fixedly connected with the mounting beam; the reinforcing beam comprises a first reinforcing plate fixedly connected with the hanging beam, a second reinforcing plate fixedly connected with the frame and a third reinforcing plate with the two ends fixedly connected with the first reinforcing plate and the second reinforcing plate respectively. According to the battery pack tray, the structural strength can be met, the light weight is realized, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack tray, a battery pack and a car. Background Art

[0002] In the electric vehicle sector, the structural design of the battery housing is crucial for ensuring battery pack safety and improving overall vehicle performance. Currently, common battery housing construction methods are aluminum profile splicing and welding, and integrated stamping. However, aluminum profile splicing and welding are prone to deformation and weld defects during the welding process, requiring multiple rework cycles to ensure quality and resulting in high manufacturing costs. Integrated stamping also suffers from low internal battery housing space utilization.

[0003] To address the above issues, some structures of the battery box shell, such as the frame of the battery pack tray, are rolled into one piece to reduce costs and improve space utilization. However, this solution has problems such as complex roll-forming cross-section, high cost, high equipment scale requirements, and high weight. Utility Model Content

[0004] The purpose of the present invention is to provide a battery pack tray, a battery pack and a vehicle, which can meet the requirements of structural strength while achieving lightweight and reducing costs.

[0005] In order to solve the above problems, the present invention proposes a battery pack tray, comprising a frame, a bottom plate and a bottom guard plate stacked in sequence, the battery pack tray also comprising at least two mounting beams fixedly connected to opposite sides of the frame, and a plurality of reinforcing beams arranged at axial intervals along the mounting beams; one side of the plurality of reinforcing beams is fixedly connected to the frame, and the other side thereof is fixedly connected to the mounting beams; the reinforcing beams comprise a first reinforcing plate fixedly connected to the mounting beam, a second reinforcing plate fixedly connected to the frame, and a third reinforcing plate having two ends fixedly connected to the first reinforcing plate and the second reinforcing plate respectively.

[0006] Optionally, the first reinforcing plate is bent and extended from its end portion to form the second reinforcing plate, and the third reinforcing plate is obliquely extended from an end close to the first reinforcing plate to an end close to the second reinforcing plate.

[0007] The battery pack tray of the present invention also includes a fixing member connecting the frame and the base plate, and a connecting member connecting the base plate and the bottom guard plate. The connecting member is connected to the fixing member to relatively fix the frame, the base plate and the bottom guard plate.

[0008] Optionally, the fixing member is a fastening rivet, the connecting member is a bolt, the frame and the base plate are respectively provided with a first fixing hole and a second fixing hole, the bottom guard plate and the fixing member are respectively provided with a first connecting hole and a second connecting hole, the first fixing hole, the second fixing hole and the first connecting hole are connected, the fixing member is at least partially riveted in the first fixing hole and the second fixing hole, the connecting member is passed through the first connecting hole and the second connecting hole, and is detachably connected to the fixing member.

[0009] Optionally, a sealing layer is filled between the frame and the bottom plate, and a sealing ring is provided between the bottom plate and the bottom guard plate.

[0010] The battery pack tray of the present invention further includes a support assembly, which is disposed between the bottom plate and the bottom guard plate and is used to support a middle area of ​​the bottom plate.

[0011] Optionally, the support assembly includes a plurality of support members that are spaced apart and distributed in an array on a side of the bottom guard plate close to the bottom plate, and an elastic member sandwiched between the support members and the bottom plate.

[0012] Optionally, the frame includes a plurality of frame beams, which are sequentially connected end to end to form the frame, and a through hole for allowing the electrophoretic medium to flow is opened on the inner side of at least one of the frame beams.

[0013] The utility model also provides a battery pack, comprising the battery pack tray.

[0014] The utility model also provides a car, comprising the battery pack.

[0015] The technical solution of the present invention has the following beneficial effects compared to the prior art: the battery pack tray of the present invention can meet the requirements of structural strength, achieve lightweight and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention 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 any creative work.

[0017] Figure 1 This is a structural diagram of the battery pack tray of the present invention.

[0018] Figure 2 This is an exploded view of the battery pack tray of the present invention.

[0019] Figure 3 This is a partial enlarged view of an embodiment of the frame beam, mounting beam and reinforcement beam in the utility model.

[0020] Figure 4 This is a partial cross-sectional view of a battery pack tray according to an embodiment of the present invention.

[0021] Figure 5 This is a partially enlarged view of an embodiment of the frame beam of the present invention.

[0022] In the picture:

[0023] 1-frame; 11-mounting beam; 12-reinforcement beam; 121-first reinforcement plate; 122-second reinforcement plate; 123-third reinforcement plate; 13-frame beam; 131-first fixing hole; 132-through hole;

[0024] 2- bottom plate; 21- second fixing hole;

[0025] 3- bottom guard plate; 31- first connecting hole;

[0026] 4-connecting assembly; 41-fixing member; 411-second connecting hole; 42-connecting member;

[0027] 5-support assembly; 51-support member; 52-elastic member.

[0028] 61-sealing layer; 62-sealing ring. DETAILED DESCRIPTION

[0029] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0030] The orientations or positional relationships indicated by terms such as "upper", "lower", "top", "bottom", "inside", and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on the utility model.

[0031] The terms "first," "second," and the like are merely used to distinguish between elements of similar nature and do not indicate or imply relative importance or a particular order.

[0032] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, in addition to the listed elements, and may also include other elements not expressly listed.

[0033] Please refer to Figure 1 and Figure 2 , the present utility model provides a battery pack tray, which includes a frame 1, a bottom plate 2 and a bottom guard plate 3 arranged in layers in sequence, wherein the frame 1 includes a plurality of border beams 13, and the plurality of border beams 13 are connected end to end in sequence to form the frame 1.

[0034] The battery pack tray further includes a mounting beam 11 and a reinforcing beam 12. The mounting beam 11 is used to mount the battery pack tray to an automobile, and the reinforcing beam 12 is used to increase the connection strength between the mounting beam 11 and the border beam 13. In one example, the border beam 13, the mounting beam 11 and the reinforcing beam 12 are integrally roll-formed. In another example, the border beam 13, the mounting beam 11 and the reinforcing beam 12 are fixedly connected to each other by means of welding, bolt connection, etc. And in this embodiment, the border beam 13 and the reinforcing beam 12 can adopt the same roll cross-section, so as to reduce the cost. As Figure 3 and Figure 4 shown, the cross-section of the border beam 13 is "day" shaped. Optionally, the cross-section of the border beam 13 can also be "eye" shaped, so as to improve the structural strength.

[0035] Specifically, the number of the mounting beams 11 is at least two, and they are respectively fixedly connected to two relatively arranged border beams 13. Optionally, a plurality of reinforcing beams 12 are arranged at intervals along the axial direction of the mounting beam 11. The length of the reinforcing beam 12 is preferably about 1 / 10 of the length of the mounting beam 11, and preferably 2 to 6 reinforcing beams 12 are arranged on each border beam 13. As Figure 1 shown, there are 4 reinforcing beams 12. By arranging the 4 reinforcing beams 12 at intervals, while meeting the structural strength, the weight can be reduced to achieve lightweight.

[0036] Please refer to Figure 3One side of the plurality of reinforcing beams 12 is fixedly connected to the frame 1, and the other side is fixedly connected to the mounting beam 11. Specifically, the reinforcing beam 12 includes a first reinforcing plate 121, a second reinforcing plate 122, and a third reinforcing plate 123. The first reinforcing plate 121 is fixedly connected to the mounting beam 11, the second reinforcing plate 122 is fixedly connected to the frame 1, and the third reinforcing plate 123 is fixedly connected at both ends to the first reinforcing plate 121 and the second reinforcing plate 122, respectively. The third reinforcing plate 123 improves the strength and rigidity of the reinforcing beam. In one example, the first reinforcing plate 121 is bent and extended from its end to form the second reinforcing plate 122, and the third reinforcing plate 123 extends obliquely from the end closest to the first reinforcing plate 121 to the end closest to the second reinforcing plate 122. In another example, the first reinforcing plate 121 is bent and extended from its end to form the second reinforcing plate 122, and the ends of the third reinforcing plate 123 are fixedly connected to the first reinforcing plate 121 and the second reinforcing plate 122, respectively, by welding, bolting, or other means. Optionally, the first reinforcing plate 121 and the second reinforcing plate 122 are both flat plates, and the third reinforcing plate 123 is in a triangular or trapezoidal shape. At least two third reinforcing plates 123 are arranged on the first reinforcing plate 121 and the second reinforcing plate 122 at intervals along the length direction of the mounting beam 11, and the third reinforcing plate 123 is approximately perpendicular to the first reinforcing plate 121 and the second reinforcing plate 122.

[0037] The battery pack tray of the present invention also includes a connecting component 4, specifically, the connecting component 4 includes a fixing member 41 and a connecting member 42, wherein the fixing member 41 is used to connect the frame 1 and the base plate 2, and the connecting member 42 is used to connect the base plate 2 and the bottom guard plate 3. The fixing member 41 connects the base plate 2 and the frame 1 while providing an installation point for the bottom guard plate 3. Compared with the method of fixing the base plate 2 and the frame 1 with rivets, and then fixing the base plate 2 and the bottom guard plate 3 with bolts embedded in the base plate 2, the fixing member 41 and the connecting member 42 are connected to each other, so that the frame 1, the base plate 2 and the bottom guard plate 3 are relatively fixed, which can reduce the number of fixing members 41 and further reduce the weight of the battery pack tray.

[0038] Optionally, the fixing member 41 is a fastening rivet, and the connecting member 42 is a bolt. The frame 1 and the base plate 2 are respectively provided with a first fixing hole 131 and a second fixing hole 21, and the bottom guard plate 3 and the fixing member 41 are respectively provided with a first connecting hole 31 and a second connecting hole 411. The first fixing hole 131, the second fixing hole 21 and the first connecting hole 31 are connected. The fixing member 41 is at least partially riveted in the first fixing hole 131 and the second fixing hole 21. The connecting member 42 is passed through the first connecting hole 31 and the second connecting hole 411 and is detachably connected to the fixing member 41, thereby facilitating installation and improving assembly efficiency.

[0039] See also Figure 4In some embodiments, a sealing layer 61 is placed between the frame 1 and the bottom plate 2, and a sealing ring 62 is provided between the bottom plate 2 and the bottom guard plate 3. The sealing ring 62 is disposed at the edges of the bottom plate 2 and the bottom guard plate 3. Optionally, the sealing layer 61 is a sealant filled between the frame 1 and the bottom plate 2, and the sealing ring 62 is a sealing foam or sealant. The sealing layer 61 and the sealing ring 62 form a double seal, preventing moisture and other media from the battery pack tray from entering the gap between the bottom plate 2 and the bottom guard plate 3, thereby improving the sealing effect. Furthermore, the sealing layer 61 can enhance the stability of the connection between the bottom plate 2 and the frame 1.

[0040] Please continue reading Figure 2 and Figure 4 The battery pack tray of the present invention also includes a support assembly 5 for supporting the middle area of ​​the bottom plate 2, and a number of support assemblies 5 are arranged at intervals and distributed in an array between the bottom plate 2 and the bottom guard plate 3. Optionally, the support assembly 5 can be made of materials such as glue, foam, plastic or metal. Preferably, the support assembly 5 includes a support member 51 made of a hard material and an elastic member 52 made of an elastic material, wherein the elastic member 52 is clamped between the support member 51 and the bottom plate 2. The support member 51 can improve the impact resistance of the bottom of the battery pack tray, and improve safety in scenarios where the bottom of the battery pack tray is scratched by foreign objects; the elastic member 52 can provide a certain supporting force to the bottom plate 2 to avoid deformation of the middle area of ​​the bottom plate 2, and can prevent the support member 51 from vibrating, making abnormal noise or uneven contact with the bottom plate 2 or the bottom guard plate 3 during driving of the car.

[0041] See also Figure 5 Optionally, a through hole 132 is provided on the inner side of at least one frame beam 13, and the through hole 132 is used to allow the electrophoretic medium to flow. In order to improve the corrosion resistance of the battery pack tray, the battery pack tray needs to be processed by an electrophoretic process. During the electrophoresis process, there may be insufficient penetration of the electrophoretic medium inside the cavity of the frame beam 13 and other structures, resulting in incomplete electrophoresis. Through the through hole 132, the inner surface of the cavity of the frame beam 13 can be fully in contact with the electrophoretic medium, thereby improving the surface treatment quality. Optionally, the through hole 132 can be circular, triangular, square, diamond or other polygonal.

[0042] The utility model also provides a battery pack, comprising the above-mentioned battery pack tray.

[0043] The utility model also provides a car, comprising the battery pack.

[0044] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A battery pack tray, characterized by: The battery pack tray comprises a frame (1), a bottom plate (2) and a bottom guard plate (3) which are stacked in sequence, and the battery pack tray further comprises at least two mounting beams (11) respectively fixedly connected to opposite sides of the frame (1), and a plurality of reinforcing beams (12) arranged at intervals along the axial direction of the mounting beams (11); one side of the plurality of reinforcing beams (12) is fixedly connected to the frame (1), and the other side thereof is fixedly connected to the mounting beams (11); the reinforcing beams (12) comprise a first reinforcing plate (121) fixedly connected to the mounting beams (11), a second reinforcing plate (122) fixedly connected to the frame (1), and a third reinforcing plate (123) having two ends respectively fixedly connected to the first reinforcing plate (121) and the second reinforcing plate (122).

2. The battery pack tray according to claim 1, characterized in that: The first reinforcing plate (121) is bent and extended from its end to form the second reinforcing plate (122), and the third reinforcing plate (123) is inclined and extended from an end close to the first reinforcing plate (121) to an end close to the second reinforcing plate (122).

3. The battery pack tray according to claim 1, wherein: It also includes a fixing member (41) connecting the frame (1) and the bottom plate (2), and a connecting member (42) connecting the bottom plate (2) and the bottom guard plate (3), wherein the connecting member (42) is connected to the fixing member (41) so that the frame (1), the bottom plate (2) and the bottom guard plate (3) are relatively fixed.

4. The battery pack tray according to claim 3, wherein: The fixing member (41) is a fastening rivet, and the connecting member (42) is a bolt. The frame (1) and the bottom plate (2) are respectively provided with a first fixing hole (131) and a second fixing hole (21). The bottom guard plate (3) and the fixing member (41) are respectively provided with a first connecting hole (31) and a second connecting hole (411). The first fixing hole (131), the second fixing hole (21) and the first connecting hole (31) are connected. The fixing member (41) is at least partially riveted in the first fixing hole (131) and the second fixing hole (21). The connecting member (42) is passed through the first connecting hole (31) and the second connecting hole (411) and is detachably connected to the fixing member (41).

5. The battery pack tray according to claim 1, wherein: A sealing layer (61) is filled between the frame (1) and the bottom plate (2), and a sealing ring (62) is provided between the bottom plate (2) and the bottom guard plate (3).

6. The battery pack tray according to claim 1, wherein: It also includes a support assembly (5), which is arranged between the base plate (2) and the bottom guard plate (3) and is used to support the middle area of ​​the base plate (2).

7. The battery pack tray according to claim 6, characterized in that: The support assembly (5) comprises a plurality of support members (51) arranged at intervals and distributed in an array on a side of the bottom guard plate (3) close to the bottom plate (2), and an elastic member (52) sandwiched between the support members (51) and the bottom plate (2).

8. The battery pack tray according to claim 1, wherein: The frame (1) comprises a plurality of frame beams (13), wherein the plurality of frame beams (13) are sequentially connected end to end to form the frame (1), and a through hole (132) for allowing electrophoretic medium to flow is provided on the inner side of at least one of the frame beams (13).

9. A battery pack, characterized in that: Including the battery pack tray according to any one of claims 1 to 8.

10. An automobile, characterized in that: Including the battery pack according to claim 9.

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