CN218085722U - Frame assembly and vehicle - Google Patents

Abstract

The utility model discloses a vehicle frame assembly and a vehicle, wherein the vehicle frame assembly includes a vehicle frame and a mounting bracket, the vehicle frame includes two longitudinal beams arranged oppositely, and the upper ends of the mounting bracket are connected to the two longitudinal beams respectively. The beam is fixed, the lower end of the mounting bracket is provided with a mounting position, and the mounting position is used to connect with the side of the battery pack, and the battery pack is fixed below the vehicle frame, and the battery pack is located between the two stringers. The technical solution of the utility model fixes the battery pack under the vehicle frame, which solves the problem that the battery pack occupies the back space or the space on both sides, which is not convenient for the vehicle frame to arrange other accessories and hinders the expansion of the vehicle model.

Description

Frame components and vehicles

technical field

The utility model relates to the technical field of vehicles, in particular to a frame assembly and a vehicle.

Background technique

As the development trend of the current vehicle field, electric drive vehicles also have development needs for electric drive heavy-duty special vehicles. The power batteries of existing electric vehicles are often arranged in two ways, namely the back type and the side-mounted type. The back type is to make a bracket in the space behind the cab and stack the battery on the bracket. The disadvantage is that it will increase the front The axle load of the bridge is affected by the slope and acceleration and deceleration, which requires high structural strength of the bracket. The looseness of the bracket will affect the safety of the cab, block the rear view, compress the layout space, and reduce the loading capacity of the cargo box. The power is limited; the side-mounted battery brackets are battery brackets on both sides of the girder, and the batteries are stacked on the brackets on both sides. The disadvantage is that it takes a lot of space between the front and rear axles to deploy enough power. The battery box The body is arranged on the outside and left and right to occupy a large space of the whole vehicle. This model is only suitable for pure electric vehicles, and there is no more space for extended range or hydrogen fuel. The ground clearance is not conducive to vehicle passability. In addition, in the prior art, in order to avoid the space for the battery pack to be hung on the side, the battery pack is arranged between the frame. Vehicles with special structural equipment require more installation space between the two longitudinal beams of the frame, and the strength of the frame needs to meet the requirements.

Utility model content

The main purpose of this utility model is to provide a frame assembly, aiming at providing a frame assembly for new energy vehicles, fixing the battery pack under the frame, so as to solve the problem that the battery pack occupies the back space or two The side space is not convenient for the arrangement of other accessories on the frame, which hinders the expansion of the model.

In order to achieve the above object, the vehicle frame assembly proposed by the utility model includes:

a vehicle frame comprising two oppositely disposed longitudinal beams; and

Mounting brackets, the upper ends of the mounting brackets are respectively fixed to the two longitudinal beams, and the lower ends of the mounting brackets are provided with installation positions, the installation positions are used to connect with the sides of the battery pack, and the The battery pack is fixed under the vehicle frame, and the battery pack is located between the two longitudinal beams.

Optionally, the mounting bracket includes a plurality of bracket units arranged at intervals on the two longitudinal beams respectively, and the bracket units include a first connecting section extending along the Z direction of the vehicle frame, and a first connecting section connected to the first The ends of the segments are connected and the second connecting segment extends along the Y direction of the vehicle frame, at least a part of the first connecting segment is connected with the longitudinal beam, and the second connecting segment is used for connecting with the The sides of the battery pack are connected.

Optionally, the bracket unit further includes a first reinforcing plate, the first reinforcing plate is arranged on a side of the first connecting section away from the longitudinal beam, the first reinforcing plate is connected to the second segments are connected.

Optionally, there is a cavity between the first reinforcing plate and the first connecting section.

Optionally, the first connecting section and the first reinforcement plate are correspondingly provided with a plurality of installation holes, and the installation holes are used for fasteners to pass through to connect a bracket unit and a The stringers are fixed.

Optionally, the bracket unit further includes a plurality of column tubes, one of the column tubes is correspondingly pierced with one of the installation holes, and the column tubes are located between the first reinforcing plate and the first connecting section, The fastener passes through the column tube to fix a support unit and a longitudinal beam.

Optionally, the bracket unit further includes a second reinforcing plate, the second reinforcing plate is arranged on a side of the second connecting section away from the first connecting section, the second reinforcing plate is connected to the The second connecting segment is connected.

Optionally, both the second connecting section and the second reinforcing plate are provided with fixing holes through which fasteners pass through to fix a bracket unit and the battery pack. .

Optionally, there is a preset height H1 between the bottom of the first reinforcing plate and the second connecting section, and the preset height H1 is greater than the length of the fastener passing through the second connecting section.

Optionally, the bracket unit further includes a third reinforcing plate, and the third reinforcing plate is connected to the first connecting section, the second connecting section, and the first reinforcing plate.

The utility model also proposes a vehicle, comprising:

a frame assembly as described above; and

The battery pack includes a battery frame, a fixing position is provided on the outside of the battery frame, the fixing position is connected to the installation position, and the battery pack is fixed under the vehicle frame.

The technical solution of the utility model adopts a vehicle frame and a mounting bracket, the vehicle frame and the mounting bracket, the vehicle frame includes two oppositely arranged longitudinal beams, and the upper ends of the mounting brackets are respectively fixed with the two longitudinal beams. The lower end of the mounting bracket is provided with a mounting position, the mounting position is used to connect with the side of the battery pack, and the battery pack is fixed below the vehicle frame, and the battery pack is located between the two longitudinal beams. between. The installation of battery packs in this solution does not take up extra space on both sides of the vehicle, which is convenient for model expansion. The battery pack can be disassembled freely, which is convenient for disassembly and maintenance. The structural parts of the mounting bracket are simple to manufacture, low in manufacturing cost and high in compatibility. Compared with lifting and fixing the battery pack through the bottom bracket of the battery bracket, this solution cancels the bottom bracket of the battery bracket, making the battery bracket more lightweight and lower in cost than the original solution. This solution does not take up extra space on both sides of the frame, which is convenient for vehicle expansion. At the same time, there is no limitation of the bottom bracket, because the mating surface of the whole vehicle and the power battery pack is on the side wall, not the Z direction of the whole vehicle. This structure can greatly provide more Z-direction space for the power battery pack, so that the power of the subsequent power battery pack can be freely expanded.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is a schematic structural view of an embodiment of the installation of the vehicle frame and the battery pack of the present invention;

Fig. 2 is a schematic diagram of the decomposition structure in Fig. 1;

Fig. 3 is a structural schematic diagram of another viewing angle in Fig. 1;

Fig. 4 is the enlarged view of place A in Fig. 3;

Fig. 5 is the structural representation of support unit in Fig. 1;

Fig. 6 is a schematic structural view of an embodiment of the fixed bracket of Fig. 1;

Fig. 7 is a schematic cross-sectional structure diagram of the fixed bracket in Fig. 6;

Fig. 8 is a schematic structural view of another embodiment of the fixing bracket of Fig. 1;

Fig. 9 is a schematic cross-sectional structure diagram of the fixed bracket in Fig. 8;

Fig. 10 is a schematic structural view of another embodiment of the fixing bracket in Fig. 1;

FIG. 11 is a schematic cross-sectional structure diagram of the fixing bracket in FIG. 10 .

Explanation of reference numbers:

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, the descriptions related to "first", "second" and so on in the present application are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

As the development trend of the current vehicle field, electric drive vehicles also have development needs for electric drive heavy-duty special vehicles. The power batteries of existing electric vehicles are often arranged in two ways, namely the back type and the side-mounted type. The back type is to make a bracket in the space behind the cab and stack the battery on the bracket. The disadvantage is that it will increase the front The axle load of the bridge is affected by the slope and acceleration and deceleration, which requires high structural strength of the bracket. The looseness of the bracket will affect the safety of the cab, block the rear view, compress the layout space, and reduce the loading capacity of the cargo box. The power is limited; the side-mounted battery brackets are battery brackets on both sides of the girder, and the batteries are stacked on the brackets on both sides. The disadvantage is that it takes a lot of space between the front and rear axles to deploy enough power. The battery box The left and right layout of the body on the outside takes up a lot of space in the vehicle. This model is only suitable for pure electric vehicles. There is no more space for range extension or hydrogen fuel cell packs, and it is not suitable for small axle distances or special structures that need to be arranged on both sides. Equipped vehicles, at the same time, it is necessary to increase the number of layers of battery stacks when simply hanging a large amount of power on the side, which will reduce the ground clearance and is not conducive to vehicle passability.

For this reason, the utility model proposes a vehicle 100 .

1 to 3, the vehicle 100 includes a vehicle frame assembly and a battery pack 30, the vehicle frame assembly includes a vehicle frame 10 and a mounting bracket 20, the upper end of the mounting bracket 20 is fixed to the vehicle frame 10, and the mounting bracket The lower end of 20 is formed with a mounting position below the vehicle frame 10, the upper end of the mounting bracket 20 is one end of the mounting bracket 20 extending along the Z direction of the vehicle frame 10, the lower end is the other end opposite to the upper end, and the battery pack 30 includes a battery Frame 50 , the outer side of the battery frame 50 is provided with a fixing position, the fixing position is connected with the installation position, and the battery pack 30 is fixed under the vehicle frame 10 .

In the prior art, in order to avoid the side hanging space of the battery pack 30, the battery pack 30 is arranged between the vehicle frames 10, which requires more installation space between the two longitudinal beams 11 of the vehicle frame 10, and the vehicle frame The strength of 10 needs to meet the requirements, while the traditional vehicle frame 10 is generally composed of longitudinal beams 11 and cross beams, and the space layout is insufficient. In addition, the traditional vehicle frame 10 composed of longitudinal beams 11 and various cross beams has a relatively large cross-section, resulting in a relatively narrow internal space. It is unfavorable to install the battery pack 30 between the left and right beams of the vehicle frame 10 . The capacity of the battery pack 30 is limited. In addition, the battery pack 30 is arranged under the vehicle frame 10 through the battery bracket, thereby releasing the space on both sides of the vehicle frame 10. However, the battery pack 30 at the bottom of the battery bracket is mostly used. According to the solution, this kind of battery bracket needs to form a frame, so the weight is relatively large, the weight is low, and the cost is also high. The reason for the installation of the battery bracket is that on the one hand, the hardness and torsion of the battery frame 50 are insufficient, and on the other hand, the battery factory does not consider the whole vehicle for battery capacity and cost considerations. Therefore, when the frame strength and torsion of the battery pack 30 meet the requirements, the battery pack 30 is arranged under the vehicle frame 10 through the installation bracket 20 of this solution, and the battery pack 30 is fixed on the vehicle by connecting the installation bracket 20 to the battery frame 50. The vehicle 100 is not only suitable for pure electric models, but also for extended-range or hydrogen fuel cell models, which can be avoided by the left and right sides. The space can facilitate the arrangement of other accessories of the whole vehicle, such as the installation of accessories such as generators, fuel tanks, communication harnesses, power harnesses, and high-voltage boxes. The bottom bracket of the battery bracket is canceled, which makes the battery bracket lighter and lower in cost compared with the original solution. This solution does not occupy the extra space on both sides of the vehicle 100, which is convenient for vehicle expansion.

In order to fix the battery pack 30 under the vehicle frame 10 , this solution makes improvements to the frame assembly and the frame of the battery pack 30 .

Referring to Fig. 1 to Fig. 5, firstly, the vehicle frame assembly is introduced. The vehicle frame assembly includes a vehicle frame 10 and a mounting bracket 20. The vehicle frame 10 includes two longitudinal beams 11 arranged oppositely. They are respectively fixed to the two longitudinal beams 11, and the lower end of the mounting bracket 20 is provided with a mounting position, and the mounting position is used to connect with the side of the battery pack 30, so as to fix the battery pack 30 on the Below the vehicle frame 10 , the battery pack 30 is located between the two longitudinal beams 11 .

In one embodiment, the mounting bracket 20 can be arranged on the two beams of the vehicle frame 10 along the X direction. The upper ends are respectively connected with the two beams, such as welding or bolted or riveted, etc., and the lower ends of the mounting brackets 20 in the front and rear directions of the X direction cooperate to define the installation position, and are connected with the side of the battery frame 50 to carry out the battery pack 30. fixed.

In another embodiment, the mounting bracket 20 can be arranged on the longitudinal beam 11 of the vehicle frame 10 along the X direction. The upper ends of 20 are respectively connected to the two longitudinal beams 11, such as welding or bolted or riveted, etc., the lower ends of the mounting brackets 20 on the left and right longitudinal beams 11 define installation positions, and cooperate with the battery frame 50 to fix the battery.

The installation bracket 20 can be one integrally arranged, such as a frame structure with upper and lower openings; or two integral ones arranged symmetrically, such as a trident structure, or a plurality of monomers distributed symmetrically at intervals.

The technical solution of the utility model adopts a vehicle frame 10 and a mounting bracket 20, the upper end of the mounting bracket 20 is fixed to the vehicle frame 10, and the lower end of the mounting bracket 20 forms a mounting position below the vehicle frame 10. , the installation position is used to connect with the side of the battery pack 30 to fix the battery pack 30 under the vehicle frame 10 . The installation of the battery pack 30 in this solution does not take up extra space on both sides of the vehicle 100, which is convenient for vehicle expansion. The battery pack 30 is easy to maintain and can be disassembled freely. The structural parts of the mounting bracket 20 are simple to manufacture, low in manufacturing cost and high in compatibility. Compared with lifting and fixing the battery pack 30 through the bottom bracket of the battery bracket, this solution cancels the bottom bracket of the battery bracket, so that the battery bracket is lighter in weight and lower in cost compared with the original solution. This solution does not occupy the extra space on both sides of the vehicle frame 10, which is convenient for vehicle expansion. At the same time, there is no limitation of the bottom bracket, because the mating surface of the whole vehicle and the power battery pack 30 is on the side wall, not in the Z direction of the whole vehicle. This structure can substantially provide more Z-direction space for the power battery pack 30, so that the subsequent power battery pack 30 can expand freely.

Further, in order to better fix the battery pack 30, the vehicle frame 10 includes two longitudinal beams 11, the upper ends of the mounting brackets 20 are respectively fixed to the two longitudinal beams 11, and the lower ends of the mounting brackets 20 An installation position is respectively formed under one of the longitudinal beams 11, and the installation position is used to connect with the side of the battery pack 30 extending along the X direction of the vehicle frame 10, so as to fix the battery pack 30 on the vehicle. The bottom of rack 10.

As shown in Figures 1 and 2, specifically, in order to increase the connection strength of the bracket and reduce the weight of the bracket, the mounting bracket 20 includes a plurality of bracket units 21 arranged at intervals on the two longitudinal beams 11, the The bracket unit 21 includes a first connecting section 211 extending along the Z direction of the vehicle frame 10, and a second connecting section 212 connected to the end of the first connecting section 211 and extending along the Y direction of the vehicle frame. At least part of the first connecting section 211 is connected to one of the longitudinal beams 11 , and one of the second connecting sections 212 is used for connecting to the side of the battery pack 30 . Wherein, a plurality of the bracket units 21 are arranged at intervals along the X direction of the vehicle frame 10 on one of the longitudinal beams 11 . The number of bracket units 21 can be two or more mounting brackets 20 according to the weight requirements of the large power battery to be carried, such as 2, 3, 4, 6 or 8 mounting brackets 20 . The interval between the mounting brackets 20 can be adjusted according to the attachment of the accessories, that is, the accessories are arranged on the longitudinal beam 11 and located between at least two mounting brackets 20 . Of course, multiple bracket units 21 can also be provided as an integrated mounting bracket 20, such as a bifurcated type, that is, a three-way bifurcated type, a four-way bifurcated type, and the like.

3 to 5, in order to further improve the strength of the bracket unit 21, ensure that the connection of the bracket unit 21 is stable, and reduce the cost of the bracket unit 21, the bracket unit 21 also includes a first reinforcement plate 22, and the first reinforcement The plate 22 is connected to the first connecting section 211 .

In one embodiment, the first reinforcing plate 22 is disposed between the longitudinal beam 11 and the first connecting section 211 , and the first reinforcing plate 22 is attached to the first connecting section 211 .

In another embodiment, the first reinforcing plate 22 is arranged on a side far away from the longitudinal beam 11 , and is attached to the first connecting section 211 .

In this embodiment, in order to strengthen the strength and reduce the weight, the first reinforcing plate 22 is arranged on the side of the first connecting section 211 away from the longitudinal beam 11 . There is a cavity between the first reinforcing plate 22 and the first connecting section 211 .

Specifically, in order to facilitate the connection and detachment of the bracket unit 21 and the longitudinal beam 11, a plurality of installation holes 221 are correspondingly formed on the first connection section 211 and the first reinforcement plate 22, and the plurality of installation holes 221 for the fastener to be connected with the longitudinal beam 11 of the vehicle frame 10 .

Fasteners can be bolts, rivets, and the like.

3 to 5, in order to ensure the strength and torsion of the first reinforcement plate 22 and the first connecting section 211, the bracket unit 21 also includes a plurality of column tubes 23, and one of the column tubes 23 is correspondingly pierced with a The mounting hole 221 is provided, the column tube 23 is located between the first reinforcing plate 22 and the first connecting section 211 , and the fastener passes through the column tube 23 . The setting of the column tube 23 makes the bracket unit 21 have higher torsional strength. When installing, the fastener passes through the column tube 23 and can also prevent the fastener from being stuck between the two mounting holes 221 at the front and rear, thereby improving Efficiency in the assembly process.

Further, in order to ensure the strength of the connection between the bracket unit 21 and the battery pack 30 , the bracket unit 21 further includes a second reinforcing plate 24 connected to the second connecting section 212 .

In order to facilitate the installation and connection of the second reinforcement board 24 , the second reinforcement board 24 is arranged on a side of the second connection section 212 away from the first connection section 211 . The second reinforcing plate 24 is arranged on the same side of the first reinforcing plate 22 and may cause interference, and the second reinforcing plate 24 is arranged on the other side. On the one hand, the second reinforcing plate 24 can protect the second connecting section 212; The second reinforcing plate 24 is adjusted.

In one embodiment, the second reinforcing plate 24 and the second connecting section 212 are stacked.

In another embodiment, a cavity is provided between the second reinforcing plate 24 and the second connecting section 212 .

In order to facilitate the connection and disassembly of the bracket unit 21 and the battery pack 30, the second connecting section 212 and the second reinforcing plate 24 are provided with fixing holes 213, and the fixing holes 213 are used for fasteners to pass through and connect with the battery. Package 30 is connected. Specifically, both the second connecting section 212 and the second reinforcing plate 24 are provided with at least two fixing holes 213 penetrating along the X direction of the vehicle frame 10 for fasteners to pass through and connect with the battery pack 30 . connect.

The vehicle 100 is equipped with a large-weight power battery pack 30, which is prone to twisting when turning, etc. In order to avoid deformation between the fixing holes 213 and improve the strength of the second connecting section 212, the bracket unit 21 also includes a third reinforcement plate 25 , the third reinforcing plate 25 is connected to the first connecting section 211 , the second connecting section 212 , and the first reinforcing plate 22 .

In light and medium-sized vehicles 100, because the weight of the battery pack 30 is relatively light, the third reinforcing plate 25 can also be omitted.

Referring to FIG. 5 , for the convenience of operation when the second connecting section 212 is connected to the battery pack 30 , the bottom of the first reinforcing plate 22 has a preset height H ₁ from the second connecting section 212 , and the preset height H1 is greater _than the length of the fastener to be assembled. In this way, it can be installed regardless of whether the fastener is worn up or down, and the preset height can facilitate the workpiece to twist the fastener.

The bracket unit 21 of the installation bracket 20 provided by the utility model includes the first connecting section 211 and the second connecting section 212 to form an L shape, and the section is U-shaped; The two form a cavity, and are provided with a matching installation hole 221 with the longitudinal beam 11, through which a column tube 23 is connected to improve the torsional strength, and the second reinforcement plate 24 is wrapped on the second connection section 212 to strengthen the second connection The strength of the section 212 and the material of the bracket unit 21 can be medium and high-strength structural steel. The third reinforcing plate 25 shown can be omitted or retained according to the size of the battery pack 30 . The design of the bracket unit 21 has fewer structural components and fewer welding areas, which reduces processing deformation and ensures higher precision. In order to improve and facilitate installation with the longitudinal beam 11, the mounting hole 221 includes a main positioning hole 622 and an auxiliary positioning hole 622. The size and/or shape of the main and auxiliary positioning holes 622 are different. When installing, a main positioning hole 622 and several The auxiliary positioning hole 622 can facilitate the installation of the bracket unit 21 .

Under the layout of the whole vehicle, a plurality of bracket units 21 are fixed on the outer sides of the two longitudinal beams 11 of the vehicle frame 10 through several fasteners. It is located in the X-direction (front-rear direction) of the vehicle and between the two leaf spring lugs 80 . It does not occupy the outer space of the vehicle frame 10 longitudinal beam 11, which is convenient for the arrangement of other accessories of the vehicle and the expansion of the vehicle model; the power of the battery pack 30 installed under the vehicle frame 10 is not limited by the battery bracket, so it can be used in the vehicle. The Z direction (height direction) can be expanded; compared with the existing installation frame to carry the battery pack 30, the bracket unit 21 has fewer attachment structures and light weight, which is convenient for the weight reduction of the whole vehicle; the battery pack 30 is arranged on the vehicle frame The bottom of 10 does not affect the situation of the vehicle body, and it can be disassembled and assembled freely in the Z direction, and it is also convenient for subsequent expansion to realize automatic battery replacement.

The structure, arrangement position and function of the bracket unit 21 have been introduced above. The present application also makes improvements to the battery frame 50 of the battery pack 30 in order to increase the torsional rigidity of the battery frame 50 itself, so that it can have a load-bearing capacity. ability, so that it can be connected with the bracket unit 21 and arranged under the vehicle frame 10, saving the space on both sides of the vehicle frame 10. Of course, the battery pack 30 does not have to adopt the solution of this application. As mentioned above, it only needs to strengthen the overall strength and twist of the battery frame 50 to meet the needs of the vehicle 100. There are various ways to realize it, such as changing materials and adding accessories to strengthen the frame. intensity and more.

Referring to Fig. 1 to Fig. 3 and Fig. 6, the battery frame 50 is introduced below, and the battery frame 50 includes:

The fixed bracket 60, the surrounding frame 51 and the bottom frame 52, the surrounding frame 51 and the bottom frame 52 are enclosed to form an accommodating cavity 53 for the battery module to be placed, one end of the fixing bracket 60 is in contact with the surrounding frame To connect, the other end of the fixing bracket 60 is provided with a fixing position outside the surrounding frame 51 , and the fixing position is used to connect with the installation position, so as to fix the battery frame 50 under the vehicle 100 .

One end of the fixed bracket 60 is connected with the surrounding frame 51, and the other end of the fixed bracket 60 is provided with a fixed position on the outside of the described surrounding frame 51, and there is no need to set a bottom support bracket to carry and lift the bottom frame 52. Compared with the original The solution has a higher degree of light weight and lower cost. This solution does not take up extra space on both sides of the frame, which is convenient for vehicle expansion. At the same time, there is no limitation of the bottom support bracket, because the mating surface of the whole vehicle and the power battery pack is on the side wall, not the Z direction of the whole vehicle. This structure can greatly provide more Z-direction space for the power battery pack, so that the power of the subsequent power battery pack can be freely expanded.

In this embodiment, the battery frame 50 satisfies the torsional rigidity requirements of the vehicle by forming a plurality of reinforcing cavities 54 in the surrounding frame 51 and the bottom frame 52. Specifically, the surrounding frame 51 and the The bottom frame 52 is integrally extruded.

The technical solution of the utility model adopts the fixed bracket 60, the surrounding frame 51 and the bottom frame 52, and the surrounding frame 51 and the bottom frame 52 are enclosed to form an accommodating cavity 53 for the battery module to be placed. The surrounding frame 51 and the bottom frame 52 A plurality of reinforcing cavities 54 are formed in the bottom frame 52, one end of the fixing bracket 60 is connected to the surrounding frame 51, and the other end of the fixing bracket 60 is formed with a fixing position on the outside of the surrounding frame 51. , the fixing position is used to connect with the installation position, so as to fix the battery frame 50 under the vehicle 100 . The surrounding frame 51 and the bottom frame 52 of the battery frame 50 adopt a load-bearing design, wherein the surrounding frame 51 and the bottom frame 52 are made of extruded aluminum alloy profiles, which are convenient for light weight while satisfying the strength; in other embodiments, Stamping can also be used to form the reinforcing cavity 54 , or other materials, as long as the torsional rigidity of the battery frame 50 itself is improved to meet the requirements. The surrounding frame 51 and the bottom frame 52 are designed with multiple reinforcement cavities 54 with multiple "cross grids" in order to improve the torsional rigidity of the battery pack 30 itself, so that the battery frame 50 itself can have the carrying capacity, and the surrounding frame 51 and The bottom frame 52 is a multi-cavity extrusion-molded aluminum alloy tailor-welded skeleton structure, and the surrounding frame 51 and the bottom frame 52 can also be integrally formed. The fixed bracket 60 is arranged according to the setting position of the installation position on the vehicle frame 10, and the fixed bracket 60 can be arranged on the two surrounding frames 51 of the battery, that is, front and rear or left and right or front and rear left and right; the battery frame 50 is arranged under the vehicle frame 10, namely The battery frame 50 is connected to the two crossbeams in the front and rear directions of the vehicle frame 10, or the left and right sides of the two longitudinal beams 11 of the vehicle frame 10 are connected to the battery frame 50, and the fixing bracket 60 can be set integrally with the battery frame 50 or separately. In this way, after the battery frame 50 is combined The power battery pack 30 is installed under the vehicle frame 10, and there is no need to set a bottom support bracket for carrying and lifting, which is convenient for light weight.

Specifically, the surrounding frame 51 includes two side frames 55 extending along its own length direction, the fixing bracket 60 is arranged on the outside of the side frames 55, and the self-length direction of the surrounding frame 51 is along the The two side frames 55 extending in the X direction of the vehicle frame 10 , the fixing brackets 60 are arranged on the outer sides of the side frames 55 . The battery pack 30 composed of the battery frame 50 of the above scheme can be installed under the vehicle frame 10 through its own battery frame 50 , without occupying extra space on both sides of the vehicle 100 , which is convenient for vehicle expansion. The battery pack 30 is easy to maintain and can be disassembled freely. Because the mating surface of the vehicle and the power battery pack 30 is on the side wall, not in the Z direction of the vehicle. This structure can substantially provide more Z-direction space for the power battery pack 30, so that the subsequent power battery pack 30 can expand freely.

Referring to Fig. 3 to Fig. 6, further, in order to facilitate the connection with the mounting position on the vehicle frame 10, the fixed bracket 60 includes a fixed bracket 60 extending along the X direction of the vehicle frame 10, that is, the fixed bracket 60 extends along the side frame 55 extend in the same direction, and the fixed bracket 60 includes a fixed section 62 extending along the height direction of the surrounding frame 51, that is, extending along the Z direction of the vehicle frame 10, and extending along the width direction of the surrounding frame, namely along the vehicle frame 10. The installation section 63 extending in the Y direction of the frame 10 , the fixing section 62 is connected with the surrounding frame 51 , and the fixing position is formed on the installation section 63 .

In this embodiment, the installation position is defined by the bracket unit 21 , and the fixing bracket 60 is in an "L" shape, which facilitates the connection between the bracket unit 21 and the fixing bracket 60 . In the case of multiple bracket units 21 , the lower ends of the multiple bracket units 21 are connected to multiple fixing positions on the fixing bracket 60 , such as bolt connection, riveting and the like.

In other embodiments, the installation position may be defined by the vehicle frame 10 itself or other auxiliary components.

On the premise of satisfying the connection, in order to reduce the weight of the fixing bracket 60, the mounting section 63 is provided with a plurality of mounting sections 63 on the fixing section 62 along the extending direction of the fixing bracket 60, and a mounting section 63 is formed with a the fixed position. That is, the fixing section 62 is extended along the X direction, and the installation section 63 is arranged at intervals corresponding to the installation positions, so as to facilitate matching with the bracket unit 21 .

In other embodiments, the installation section 63 may extend as a whole along the extending direction of the fixing bracket 60 .

In order to facilitate the stability of the connection with the bracket unit 21 , the fixing position is provided with a connection hole 631 , and the connection hole 631 is used for fasteners to pass through and be connected to the installation position.

Specifically, there are at least two connecting holes 631 on the fixed position arranged along the X direction, the connecting holes 631 on the fixed position and the fixing holes 213 of the bracket unit 21 are movably matched into round holes and oblong holes, and the mounting bracket 20 and the fixing bracket 60 The connecting bracket has an amount of movement in the Y direction of the vehicle frame 10 for absorbing tolerances in the Y direction (width direction) of the vehicle frame 10 .

Referring to FIG. 4 , further, in order to better absorb the tolerance along the Y direction when the battery frame 50 is fixed under the vehicle frame 10 , the fixing bracket 60 and the bracket unit 21 have a side opposite to the Y direction of the vehicle frame 10 A gap is reserved, and the distance of the reserved gap H2 is 5mm-10mm. On the one hand, it facilitates the connection between the battery frame 50 and the bracket unit 21 , and on the other hand, it also enables the battery frame 50 to have a certain amount of movement, reducing the risk of torsional fracture.

In order to reduce the weight of the fixing bracket 60 , the fixing section 62 is provided with a weight reducing hole 621 .

In this embodiment, a plurality of weight reducing holes 621 are arranged at intervals along the X direction of the vehicle frame 10 , and the weight reducing holes 621 are oval in shape to reduce the weight while ensuring the strength of the fixing bracket 60 .

In other embodiments, the weight reducing hole 621 can be a whole, and the shape can be frame, circle and so on.

In order to facilitate the disassembly and assembly of the fixed bracket 60, the fixed section 62 is provided with a plurality of positioning holes 622, the positioning holes 622 are arranged at intervals from the weight reducing hole 621, and the positioning holes 622 are used for fasteners to pass through and The surrounding frames 51 are connected.

In other embodiments, riveting or welding may also be used for connection.

Specifically, for the convenience of connecting the fixing bracket 60 to the battery frame 50 , the positioning hole 622 includes at least one main hole and a plurality of auxiliary holes, and the main hole is spaced apart from the auxiliary holes. The fixing bracket 60 of the fixing bracket 60 is provided with a main positioning hole 622 and an auxiliary positioning hole 622 so that the assembly of the fixing bracket 60 on the battery frame 50 can be precisely positioned.

Referring to FIG. 6 to FIG. 11 , in order to strengthen the strength of the fixing bracket 60 and make the fixing bracket 60 have higher torsional strength. Referring to FIG. 6 and FIG. 7 , the mounting bracket 20 further includes a reinforcing structure 70 disposed on the fixing bracket 60 . In one embodiment, the reinforcing structure 70 includes a first side reinforcing plate 71, the first reinforcing plate 22 is arranged at a fixed position and connected with the fixing bracket 60, and the first reinforcing plate 22 faces the The mounting position is formed with a mounting groove 711 , the bottom wall of the mounting groove 711 is provided with a avoidance hole corresponding to the connecting hole 631 , and the two side walls of the mounting groove 711 are located on opposite sides of the connecting hole 631 . The reinforcing structure 70 is arranged on the fixing bracket 60, the section of the fixing bracket 60 is U-shaped, the fixing bracket 60 is an integral part, the fixing bracket 60 includes an L-shaped fixing section 62 and a mounting section 63, and the first side reinforcing plate The cross section of 71 is similar in shape to the fixed bracket 60, and the first side reinforcement plate 71 is embedded on the fixed bracket 60, and one of the first side reinforcement plates 71 and the installation groove of the first side reinforcement plate 71 are arranged on a mounting position. 711 can also play a positioning role when the bracket unit 21 is connected, so as to facilitate the connection.

8 and 9, in another embodiment, the reinforcing structure 70 includes two second side reinforcing plates 72 and a first vertical reinforcing plate 74, and the two second side reinforcing plates 72 are arranged on the The fixing positions are respectively located on both sides of the connecting hole 631, one side of the second side reinforcement plate 72 penetrates to the back side of the fixing section 62, and the other side of the second side reinforcement plate 72 is connected to the The installation section 63 is connected, the first vertical reinforcement plate 74 is arranged on the back side of the installation bracket 20 , and the first vertical reinforcement plate 74 wraps the fixing section 62 and part of the installation section 63 . The structure of the fixing bracket 60 in this solution remains the same, and the combination method of the reinforcement is changed. The second side reinforcing plate 72 penetrates through the opening of the fixing bracket 60 to the back side, and the cross section of the first vertical reinforcing plate 74 is U-shaped and is located on the side of the fixing bracket 60 close to the longitudinal beam 11, and is wrapped and fixed. In the bearing area of the bracket 60 , the second side reinforcing plate 72 is located on both sides of the connection hole 631 , and can also play a positioning role when the bracket unit 21 is connected, so as to facilitate the connection.

Referring to Fig. 10 and Fig. 11, in yet another embodiment, the reinforcement structure 70 includes two third side reinforcement plates 73 and a second vertical reinforcement plate 75, and the second vertical reinforcement plate 75 is arranged at the fixing position. , the second vertical reinforcing plate 75 includes a vertical section 751 and a bent section 752, the vertical section 751 is connected to the fixed section 62, and the end of the vertical section 751 is partially bent through To the back side of the fixing section 62, the bending section 752 is connected with the installation section 63, and the bending section 752 is provided with an avoidance hole corresponding to the connecting hole 631, and the two third sides are reinforced The boards 73 are all disposed at the fixing positions and respectively located on opposite sides of the second vertical reinforcement board 75 . In this solution, the structure of the fixing bracket 60 remains the same, and the combination method of the reinforcement is changed. The second vertical reinforcing plate 75 includes a vertical section 751 and a bent section 752. The vertical section 751 is bent and penetrated to the back side through the opening of the fixing bracket 60. The vertical section 751 and the bent section 752 have a shape of "Z ", the bent section 752 is located in the main bearing area of the fixed bracket 60. The two third side reinforcement plates 73 are welded between the fixed bracket 60 and the second vertical reinforcement plate 75 as reinforcing ribs, and the two third side reinforcement plates 73 can also be positioned when the bracket unit 21 is connected. role, easy to connect.

Referring to Fig. 1 to Fig. 3, the improvements to the battery frame 50 and the fixing bracket 60 are introduced above, so that the battery frame 50 can be arranged under the vehicle frame 10, the traditional side-mounted battery pack 30 solution, the left and right power battery packs 30 Communication harnesses, power harnesses and high-voltage boxes are required between them, and the degree of integration is low. This solution also provides an integrated battery pack 30, the wire harness is integrated in the battery pack 30, specifically, the battery pack 30 includes a cover plate 40, a battery module and the above-mentioned battery frame 50, the battery frame 50 Referring to the above embodiments for the specific structure, since the battery pack 30 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not repeat them here. Wherein, the battery module is installed in the receiving cavity 53 of the battery frame 50 , and the cover plate 40 is connected with the battery frame 50 and covers the battery module. The battery module includes battery packs, battery systems, such as thermal management systems, battery management systems (BMS), electrical systems, and structural components.

The above is only a preferred embodiment of the present utility model, and does not therefore limit the scope of the patent of the present utility model. Under the inventive concept of the present utility model, the equivalent structural transformation made by using the specification of the utility model and the contents of the accompanying drawings, or Direct/indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims (11)

1. A frame assembly, comprising:

the frame comprises two longitudinal beams which are oppositely arranged; and

the upper end of the mounting bracket is respectively fixed with the two longitudinal beams, the lower end of the mounting bracket is provided with a mounting position, the mounting position is used for being connected with the side edge of a battery pack, the battery pack is fixed below the frame, and the battery pack is located between the two longitudinal beams.

2. A frame assembly according to claim 1, wherein said mounting bracket includes a plurality of bracket units spaced apart on each of said side rails, said bracket units including first connecting sections extending in a Z-direction of the vehicle frame and second connecting sections connected to ends of said first connecting sections and extending in a Y-direction of the vehicle frame, at least a portion of one of said first connecting sections being connected to one of said side rails and one of said second connecting sections being connected to a side edge of said battery pack.

3. The frame assembly of claim 2, wherein the bracket unit further comprises a first reinforcement plate disposed on a side of the first connector segment facing away from the side rail, the first reinforcement plate being connected to the second connector segment.

4. A frame assembly according to claim 3, wherein a cavity is provided between said first reinforcement plate and said first connector section.

5. A frame assembly according to claim 3, wherein a plurality of mounting holes are correspondingly formed through each of said first connecting section and said first reinforcement plate, and fasteners are inserted through said mounting holes to secure a bracket unit to a side member.

6. The frame assembly of claim 5, wherein said bracket unit further includes a plurality of posts, one of said posts correspondingly extending through one of said mounting holes, said posts being positioned between said first reinforcement plate and said first connector, fasteners extending through said posts for securing one of said bracket unit to one of said side members.

7. A frame assembly according to claim 3, wherein said bracket unit further comprises a second reinforcement plate arranged on a side of said second connection section facing away from said first connection section, said second reinforcement plate being connected to said second connection section.

8. The frame assembly of claim 7, wherein the second connecting section and the second reinforcing plate each have a fastening hole therethrough, the fastening hole being adapted for a fastener to be inserted therethrough to fasten the bracket unit to the battery pack.

9. The frame assembly of claim 8, wherein the first reinforcement plate has a predetermined height H from the bottom of the first reinforcement plate to the second connector section ₁ The preset height H ₁ Is longer than the length of the fastener penetrating through the second connecting section.

10. A frame assembly according to claim 7, wherein said bracket unit further comprises a third reinforcement plate, said third reinforcement plate being connected to each of said first connection section, said second connection section, and said first reinforcement plate.

11. A vehicle, characterized by comprising:

a frame assembly according to any one of claims 1 to 10; and

the battery pack comprises a battery frame, wherein a fixing position is arranged on the outer side of the battery frame and connected with the mounting position, and the battery pack is fixed below the frame.

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