Power battery support assembly

Abstract

The utility model discloses a power battery support assembly which comprises two sets of supports and two supporting rods used for connecting the two sets of supports, the two sets of supports are symmetrically arranged on the front side and the rear side of a vehicle frame, each set of support comprises an installation frame and a vertical rod, and the side portion of the installation frame is connected with the vehicle frame through the vertical rod. The mounting frame comprises two connecting cross beams, inner longitudinal beams are arranged on the sides, close to the frame, of the two connecting cross beams, the inner longitudinal beams are connected to the sides, away from the frame, of the vertical rods, outer longitudinal beams are arranged on the sides, away from the frame, of the two connecting cross beams, and water baffles are arranged at one ends of the outer longitudinal beams and one ends of the inner longitudinal beams; the number of the vertical rods is two, the two vertical rods are distributed on the side, close to the frame, of the inner longitudinal beam in a spaced mode, the lower end of each vertical rod is provided with a set of connecting lugs, and the connecting lugs are connected with the supporting rods and the connecting cross beams. The support assembly is simple and reasonable in structure, the power battery is firmly installed, and machining and manufacturing are facilitated; and meanwhile, the bracket assembly is light in weight, so that the endurance mileage is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a power battery bracket assembly. Background Art

[0002] Due to the advantages of energy conservation, environmental protection, low noise, etc., electric vehicles have become key products of new energy vehicles. The power battery is the power source for electric vehicles. It is mainly different from the starting battery used for starting the automobile engine, and mostly uses valve-regulated lead-acid batteries, open-type tubular lead-acid batteries, and lithium iron phosphate batteries. Limited by the battery energy density, at present in the field of electric vehicles, the external dimensions and weight of the power batteries of commercial electric vehicles are relatively large, and the weight of the power battery module reaches more than 200 kg. A special installation structure is required to connect it to the frame of the commercial electric vehicle. As an important component of an electric vehicle, the fixing method of the power battery has a significant impact on the vehicle performance.

[0003] At present, there are two fixing methods for the power batteries of electric vehicles, namely side-mounted and back-mounted. Among them, the side-mounted type is easier to layout with respect to the vehicle center of gravity and space, and can reduce the risk of rollover when the vehicle is driving without load, and thus is widely used. The side-mounted power battery bracket is mainly located at the position of the fuel tank of traditional models. Affected by the vehicle width, the side-mounted brackets arranged on both sides of the frame should be as narrow as possible in the width direction, and affected by the ground clearance, they should be as low as possible in the height direction. Considering ensuring the cruising range, commercial electric vehicles generally have multiple groups of power batteries, and the bracket assembly cooperating with the power battery needs to have sufficient strength to ensure the installation stability and reliability of the power battery, and at the same time reduce the weight of the bracket. In the prior art, in order to achieve a reliable installation of the power battery, the bracket structure often needs to be made of relatively many and heavy components to ensure the overall strength of the bracket, and these brackets often have a large weight, which is not conducive to the requirements of vehicle weight reduction and lightweighting, and is not conducive to the improvement of the cruising range, so it needs to be improved urgently. Summary of the Invention

[0004] The utility model aims to solve the problems pointed out in the background art, and provides a power battery bracket assembly, which has a simple and reasonable structure, large structural strength, reliable installation of the power battery, and is conducive to processing and manufacturing; at the same time, the bracket assembly is light in weight, which is conducive to increasing the cruising range.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A power battery bracket assembly includes two sets of brackets with the same structure and two support rods for connecting the two sets of brackets. The two sets of brackets are symmetrically arranged on the front and rear sides of the frame. Each set of brackets includes an installation frame and a vertical rod, and the side part of the installation frame is connected to the frame through the vertical rod;

[0007] The mounting frame includes two connecting crossbeams, the two connecting crossbeams are parallel to each other and spaced apart along the length direction of the frame, an inner longitudinal beam is provided on the side of the two connecting crossbeams close to the frame, the inner longitudinal beam is connected to the side of the upright away from the frame, an outer longitudinal beam is provided on the side of the two connecting crossbeams away from the frame, the outer longitudinal beam is spaced apart and parallel to the inner longitudinal beam, the outer longitudinal beam is provided on the side of the inner longitudinal beam away from the frame, and a water retaining plate is provided at one end of the outer longitudinal beam and the inner longitudinal beam;

[0008] There are two vertical poles, which are spaced apart and distributed on one side of the inner longitudinal beam close to the frame. A group of connecting ears are respectively provided at the lower end of each vertical pole, and the connecting ears are connected to the support rod and the connecting cross beam.

[0009] Preferably, the upright is a hollow square tube, and two groups of through holes are provided on the tube walls on the front and rear sides of the upper part of the upright. The two groups of through holes are spaced apart up and down, and the number of through holes in each group is two. A sleeve is provided between the two through holes in each group, and both ends of the sleeve are connected to the tube wall of the upright. A bolt is passed through each group of two through holes and the sleeve. A through hole is provided on the frame, and the bolt passes through the through hole, the sleeve and the through hole in sequence and is threadedly connected with a nut.

[0010] Preferably, the number of connecting ears in each group is two, and the two connecting ears in each group are respectively arranged on the left and right tube walls of the lower part of the vertical pole, and the connecting ears are L-shaped. The connecting ears include a vertical part and a horizontal part perpendicular to the vertical part. The vertical part is provided with a vertical through hole, and the horizontal part is provided with a horizontal through hole. The vertical part of the connecting ear is welded to the vertical pole through the vertical through hole, and the horizontal part of the connecting ear is welded to the connecting beam through the horizontal through hole.

[0011] Preferably, the support rod is located below the frame, and the support rod is a hollow square tube. Two groups of through holes three are opened at both ends of each support rod, and each group of through holes three has two holes. Each group of two through holes three is opened on the left and right tube walls of the support rod. A long slot hole is opened on the side of the horizontal part of the connecting ear close to the frame, and the long slot hole and the through hole three are connected by a bolt two and a nut two.

[0012] Preferably, battery mounting holes are provided on the inner longitudinal beam and the outer longitudinal beam, and reinforcing ribs are provided at the connection between the inner longitudinal beam and the connecting cross beam, and at the connection between the outer longitudinal beam and the connecting cross beam.

[0013] Preferably, the water retaining plate includes a bottom plate and a flange, the flange is bent and extended upward along a side edge of the bottom plate, and a penetrating water leakage hole is opened on the bottom plate.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a power battery support assembly, which comprises two groups of supports and two support rods for connecting the two groups of supports. The two groups of supports are symmetrically arranged on the front and rear sides of the vehicle frame. Each group of supports includes an installation frame and a vertical rod. When specifically connecting, the vertical rod is connected to the vehicle frame through a bolt 1 passing through through-hole 1 and through-hole 2, and then tightened with a nut 1; the support rod is connected to a connecting ear welded on the vertical rod through a bolt 2 passing through through-hole 3 and a long slot hole, and then tightened with a nut 2; battery installation holes are opened on the inner longitudinal beam and the outer longitudinal beam for connecting and fixing the power battery, and the power battery is fixed on the installation frame through bolts; through the above set structure, on the basis that the inner longitudinal beam is directly connected to the vehicle frame, the installation frames on both sides can also be connected through the support rod, thereby improving the connection strength between the installation frame and the vehicle frame. In addition, the structure is simple and reasonable, the structural strength is large, the power battery is firmly installed, which is beneficial to processing and manufacturing; at the same time, the support assembly is light in weight, which is beneficial to increasing the cruising range. Description of the Drawings

[0016] Figure 1 is a perspective view of the utility model.

[0017] Figure 2 is a connection schematic diagram of two groups of supports in the utility model.

[0018] Figure 3 is the utility model Figure 1 an enlarged schematic view of part A in.

[0019] Figure 4 is the utility model Figure 1 an enlarged schematic view of part B in.

[0020] Figure 5 is a connection schematic diagram of the vertical rod and the sleeve in the utility model.

[0021] Figure 6 is a schematic diagram of the connection ear in the utility model.

[0022] Figure 7 is a schematic diagram of the support rod in the utility model.

[0023] Figure 8 is a schematic diagram of the vehicle frame in the utility model.

[0024] Figure 9 is a schematic diagram of the inner longitudinal beam, the outer longitudinal beam and the water baffle in the utility model. Detailed Embodiments

[0025] The present utility model will be further described below in conjunction with the drawings and specific embodiments:

[0026] Such as Figures 1 to 9As shown in the figure, a total assembly of a power battery bracket includes two sets of brackets with the same structure and two support rods 1 for connecting the two sets of brackets. The two sets of brackets are symmetrically arranged on the front and rear sides of a vehicle frame 3. Each set of brackets includes a mounting frame and a vertical rod 2. The side part of the mounting frame is connected to the vehicle frame 3 through the vertical rod 2. Specifically, the mounting frame includes two connecting cross beams 4. The two connecting cross beams 4 are parallel to each other and are arranged at intervals along the length direction of the vehicle frame 3. On the side of the two connecting cross beams 4 close to the vehicle frame 3, there is an inner longitudinal beam 5. The inner longitudinal beam 5 is connected to the side of the vertical rod 2 away from the vehicle frame 3. On the side of the two connecting cross beams 4 away from the vehicle frame 3, there is an outer longitudinal beam 6. The outer longitudinal beam 6 is arranged in parallel at an interval with the inner longitudinal beam 5. The outer longitudinal beam 6 is arranged on the side of the inner longitudinal beam 5 away from the vehicle frame 3. One end of the outer longitudinal beam 6 and the inner longitudinal beam 5 is provided with a water baffle 7. Among them, two vertical rods 2 are provided. The two vertical rods 2 are distributed at intervals on the side of the inner longitudinal beam 5 close to the vehicle frame 3. A set of connecting ears 8 are respectively arranged at the lower ends of each vertical rod 2. The connecting ears 8 are connected to the support rod 1 and the connecting cross beam 4.

[0027] Through the above - set structure, the mounting frame is used to place the power battery. By providing two support rods 1 for connecting the two sets of brackets, on the basis that the inner longitudinal beam 5 is directly connected to the vehicle frame 3, the inner longitudinal beams 5 on both sides can also be connected through the support rod 1, thereby improving the connection strength between the mounting frame and the vehicle frame 3.

[0028] In this embodiment, the vertical rod 2 is a hollow square tube. Please refer to again Figure 5 , on the front and rear side walls of the upper part of the vertical rod 2, two sets of through - holes one 9 are opened. The two sets of through - holes one 9 are distributed at intervals up and down. The number of each set of through - holes one 9 is two. A sleeve 10 is arranged between each two through - holes one 9 in each set. Both ends of the sleeve 10 are connected to the wall of the vertical rod 2. A bolt one 11 is inserted through each two through - holes one 9 and the sleeve 10. A through - hole two 12 is opened on the vehicle frame 3. The bolt one 11 sequentially passes through the through - hole one 9, the sleeve 10 and the through - hole two 12 and is threadedly connected with a nut one 13.

[0029] The applicant wants to explain that since the wall of the hollow square tube of the vertical rod 2 is usually thin, when the bolt is tightened, the hollow square tube is subjected to the force of the bolt, and the hollow square tube is prone to deformation and buckling, and it is easy to have failures caused by the damage of the wall of the hollow square tube. Therefore, this reinforcement method is unstable, which weakens the bearing capacity of the hollow square tube and there are potential safety hazards. For this reason, in the present utility model, a sleeve 10 is arranged between each two through - holes one 9 in each set. The sleeve 10 gives an outward supporting force to the wall of the hollow square tube. Thus, when the bolt one 11 is tightened, the upper part of the vertical rod 2 is not easily deformed, which plays a role in strengthening the connection between the vertical rod 2 and the vehicle frame 3.

[0030] In this embodiment, the number of each group of the connecting lugs 8 is two. Each group of two connecting lugs 8 are respectively arranged on the left and right side walls of the lower part of the vertical rod 2. The connecting lug 8 is in an L shape and includes a vertical portion 81 and a horizontal portion 82 perpendicular to the vertical portion 81. A vertical through hole 14 is formed in the vertical portion 81, and a horizontal through hole 15 is formed in the horizontal portion 82. The vertical portion 81 of the connecting lug 8 is welded and connected to the vertical rod 2 through the vertical through hole 14, and the horizontal portion 82 of the connecting lug 8 is welded and connected to the connecting cross beam 4 through the horizontal through hole 15. The welding method through the through holes is more firm and reliable.

[0031] In this embodiment, the support rod 1 is located below the vehicle frame 3. The support rod 1 is a hollow square tube. Please refer to again Figure 7 , two groups of through holes three 16 are formed at both ends of each support rod 1. The number of each group of through holes three 16 is two. Each group of two through holes three 16 are formed on the left and right side walls of the support rod 1. A long slot hole 17 is formed on the side of the horizontal portion 82 of the connecting lug 8 close to the vehicle frame 3. The long slot hole 17 and the through holes three 16 are connected by bolts two 18 and nuts two 19. By providing the long slot hole 17, the relative position between the support rod 1 and the inner longitudinal beam 5 can be conveniently adjusted, which is convenient for installation.

[0032] Among them, a through hole one 9 is formed in the vertical rod 2, a through hole two 12 is formed in the vehicle frame 3, a through hole three 16 is formed in the support rod 1, and a long slot hole 17 is formed in the connecting lug 8. In the specific implementation process, the vertical rod 2 and the vehicle frame 3 are connected by a bolt one 11 passing through the through hole one 9 and the through hole two 12, and the support rod 1 and the connecting lug 8 on the vertical rod 2 are connected by a bolt two 18 passing through the through hole three 16 and the long slot hole 17. The process assembly is simple, the general assembly processability is improved, it is convenient to install and replace the installation frame, and it is beneficial to later maintenance.

[0033] In addition, the vertical rod 2, the support rod 1, the connecting cross beam 4, the inner longitudinal beam 5 and the outer longitudinal beam 6 all adopt a hollow square tube structure, which can reduce their weight and achieve the effect of lightening the weight of the power battery support assembly.

[0034] Please refer to again Figure 9 , battery installation holes 20 are formed in both the inner longitudinal beam 5 and the outer longitudinal beam 6. Reinforcing ribs 21 are arranged at the joints of the inner longitudinal beam 5 and the connecting cross beam 4 and at the joints of the outer longitudinal beam 6 and the connecting cross beam 4. By providing the battery installation holes 20, when the power battery is hoisted onto the installation frame, the power battery can be installed and fixed. The installation frame has a simple structure, which is beneficial to weight reduction and processing. At the same time, combined with the installation structure of the power battery, the overall punching of the inner longitudinal beam 5 and the outer longitudinal beam 6 is beneficial to improving the processing accuracy.

[0035] Specifically, the water baffle 7 includes a bottom plate 71 and a flanging 72. The flanging 72 bends and extends upward along one side edge of the bottom plate 71. A through leakage hole 22 is formed in the bottom plate 71. The water is drained out through the leakage hole 22.

[0036] The usage method of this product is as follows:

[0037] During specific connection, the vertical rod 2 and the vehicle frame 3 are connected by a bolt 11 passing through the through hole one 9 and the through hole two 12, and then fastened by a nut 13; the support rod 1 and the connecting ear 8 welded on the vertical rod 2 are connected by a bolt 18 passing through the through hole three 16 and the long slot hole 17, and then fastened by a nut 19; the battery installation holes 20 formed in the inner longitudinal beam 5 and the outer longitudinal beam 6 are used to connect and fix the power battery, and the power battery is fixed on the installation frame by bolts; in addition, since an integral installation frame is formed between the connecting cross beam 4 and the inner longitudinal beam 5 and the outer longitudinal beam 6, thus, sub-assembly can be carried out offline, and then hoisted on the assembly line, and then integrally installed on the side of the vehicle frame 3. The two installation frames are connected by the support rod 1, thereby saving the assembly time.

[0038] In the present utility model, two connecting cross beams 4 arranged at intervals along the length direction of the vehicle frame 3 are connected and fixed by the inner longitudinal beam 5 and the outer longitudinal beam 6. The inner longitudinal beam 5 and the outer longitudinal beam 6 are perpendicular to the connecting cross beam 4. By changing the distance between the two installation frames on the left and right, front and back sides or the length of the connecting cross beam 4, power batteries of different specifications can be installed.

[0039] The above-mentioned embodiments are only the preferred embodiments of the present utility model, and do not limit the scope of implementation of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent should be included in the scope of the patent application of the present utility model.

Claims

1. A power battery bracket assembly, characterized in that, It includes two sets of brackets with the same structure and two support rods (1) for connecting the two sets of brackets. The two sets of brackets are symmetrically arranged on the front and rear sides of the vehicle frame (3). Each set of brackets includes a mounting frame and a vertical rod (2). The side part of the mounting frame is connected to the vehicle frame (3) through the vertical rod (2). The mounting frame includes two connecting cross beams (4). The two connecting cross beams (4) are parallel to each other and arranged at intervals along the length direction of the vehicle frame (3). An inner longitudinal beam (5) is arranged on the side of the two connecting cross beams (4) close to the vehicle frame (3). The inner longitudinal beam (5) is connected to the side of the vertical rod (2) far from the vehicle frame (3). An outer longitudinal beam (6) is arranged on the side of the two connecting cross beams (4) far from the vehicle frame (3). The outer longitudinal beam (6) is arranged in parallel at intervals with the inner longitudinal beam (5). The outer longitudinal beam (6) is arranged on the side of the inner longitudinal beam (5) far from the vehicle frame (3). A water baffle (7) is arranged at one end of the outer longitudinal beam (6) and the inner longitudinal beam (5). Two vertical rods (2) are provided. The two vertical rods (2) are distributed at intervals on the side of the inner longitudinal beam (5) close to the vehicle frame (3). A set of connecting ears (8) is respectively arranged at the lower end of each vertical rod (2). The connecting ears (8) are connected to the support rod (1) and the connecting cross beam (4).

2. The power battery bracket assembly according to claim 1, wherein The vertical rod (2) is a hollow square tube. Two sets of through holes one (9) are opened on the front and rear side walls of the upper part of the vertical rod (2). The two sets of through holes one (9) are distributed at intervals up and down. The number of each set of through holes one (9) is two. A sleeve (10) is arranged between each two through holes one (9) in each set. Both ends of the sleeve (10) are connected to the wall of the vertical rod (2). A bolt one (11) is inserted through each two through holes one (9) and the sleeve (10) in each set. A through hole two (12) is opened on the vehicle frame (3). The bolt one (11) sequentially passes through the through hole one (9), the sleeve (10) and the through hole two (12) and is threadedly connected with a nut one (13).

3. The power battery bracket assembly according to claim 2, characterized in that, The number of each set of connecting ears (8) is two. Each two connecting ears (8) in each set are respectively arranged on the left and right side walls of the lower part of the vertical rod (2). The connecting ears (8) are L-shaped. The connecting ear (8) includes a vertical part (81) and a horizontal part (82) perpendicular to the vertical part (81). A vertical through hole (14) is opened in the vertical part (81). A horizontal through hole (15) is opened on the horizontal part (82). The vertical part (81) of the connecting ear (8) is welded and connected to the vertical rod (2) through the vertical through hole (14). The horizontal part (82) of the connecting ear (8) is welded and connected to the connecting cross beam (4) through the horizontal through hole (15).

4. The power battery support assembly according to claim 3, wherein, The support rod (1) is located below the vehicle frame (3). The support rod (1) is a hollow square tube. Two sets of through holes three (16) are provided at both ends of each support rod (1). The number of each set of through holes three (16) is two. The two through holes three (16) in each set are provided on the left and right side walls of the support rod (1). A long slot hole (17) is provided on the side of the horizontal part (82) of the connecting ear (8) close to the vehicle frame (3). The long slot hole (17) and the through hole three (16) are connected by a second bolt (18) and a second nut (19).

5. The power battery bracket assembly according to claim 1, characterized in that Battery mounting holes (20) are provided on both the inner longitudinal beam (5) and the outer longitudinal beam (6). Reinforcing ribs (21) are provided at the joints of the inner longitudinal beam (5) and the connecting cross beam (4) and at the joints of the outer longitudinal beam (6) and the connecting cross beam (4).

6. The power battery bracket assembly according to claim 1, characterized in that, The water baffle (7) includes a bottom plate (71) and a flanging (72). The flanging (72) extends upward by bending along one side edge of the bottom plate (71). A through water leakage hole (22) is provided on the bottom plate (71).

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