Side-hung battery box frame and vehicle

Abstract

The utility model relates to the technical field of automobile parts, and discloses a side-hung battery box frame and a vehicle, the frame comprises a middle connecting rod group and two battery frames symmetrically arranged on the two sides of the middle connecting rod group, and the middle connecting rod group is at least connected with the two ends and the middle part of the battery frames; the battery frame is of an open type cuboid frame structure formed by welding bent pieces and comprises a bottom frame and two side frames perpendicularly installed at the two ends of the bottom frame, and a front inclined strut set and a rear inclined strut set are installed in the two side frames respectively. A battery middle tray is detachably mounted in the battery frame, so that the battery frame forms an upper-layer space and a lower-layer space for placing battery packs, and a pipeline layout space is formed; an integrated connecting plate set is arranged on the side, close to the middle connecting rod set, of the battery frame and used for mutual connection of the battery frame, the battery middle tray, the middle connecting rod set and the frame longitudinal beam. The frame is simple in overall structure, light in self weight and capable of fully utilizing the internal space of the vehicle under the condition of meeting the application strength and providing convenience for later battery capacity expansion as much as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, and specifically relates to a side-hung battery box frame and vehicle. BACKGROUND

[0002] There are two main arrangement modes for the power battery of the existing commercial electric vehicle, one is the rear battery pack, and the other is the side-hung battery pack. In actual use, both have certain limitations.

[0003] The rear battery pack mode is that the power battery pack is arranged on the upper surface of the frame, close to the cab. This arrangement mode has high vehicle gravity center, poor operation stability, and in the emergency braking process, there is a risk that the power battery pack will tip forward and hit the cab. The side-hung battery pack mode is that the power battery is arranged on both sides of the frame between the front wheel and the middle axle and in the inner side space of the frame. This arrangement mode has low gravity center, good operation stability, and uniform weight distribution, and the overall performance is better than that of the rear battery pack mode.

[0004] However, due to the wheelbase of the vehicle and regulatory requirements, the space for arranging the power battery is limited. With the increasing demand for driving range, there is a greater demand for the power of the battery, which means that the size of the battery pack will be larger. Therefore, there is a higher demand for the battery frame of the side-hung battery mode.

[0005] The existing side-hung battery mode exposes some specific problems when facing larger size and capacity battery packs. First, the side-hung design may increase the risk of vehicle side collision, making the battery pack more vulnerable to damage and affecting safety. Second, the larger battery pack increases the burden on one side of the vehicle body, which may affect the handling stability and ride comfort of the vehicle. In addition, the battery frame needs higher strength to support the heavier battery, which puts higher requirements on the frame material and structure design, which may lead to cost increase. At the same time, the side-hung layout limits the heat dissipation design of the battery, which is not conducive to the heat management during high-power charging. Finally, due to the low space utilization efficiency, the existing side-hung mode may not meet the needs of future high-energy density battery integration. SUMMARY

[0006] The utility model intends to provide a side-hung battery box frame and vehicle, which has a simple overall structure, reduces structural redundancy, reduces self-weight, fully utilizes the internal space of the vehicle, and provides convenience for later battery expansion as much as possible, especially suitable for heavy truck applications.

[0007] The basic scheme provided by the utility model is: a side-hung battery box frame, comprising a middle connecting rod group and two battery frames symmetrically arranged on both sides of the middle connecting rod group, wherein the middle connecting rod group is connected with both ends and the middle part of the battery frame.

[0008] The battery frame is an open cuboid frame structure formed by welding a bent piece, comprising a bottom frame and two side frames vertically installed at both ends of the bottom frame, wherein a front diagonal brace group and a rear diagonal brace group are respectively installed in the two side frames; a battery middle tray is detachably installed in the battery frame, so that the battery frame forms spaces for placing battery packs in upper and lower layers and forms a pipeline layout space; an integrated connecting plate group is arranged on one side of the battery frame close to the middle connecting rod group, which is used for simultaneously connecting the battery frame and the battery middle tray, connecting the middle connecting rod group and the battery frame, and connecting the battery frame and the vehicle frame longitudinal beam.

[0009] Also provided is a vehicle provided with the side-hung battery box frame.

[0010] The working principle and advantages of the utility model are:

[0011] Compared with the prior art, the battery frame is connected by welding a bent piece, improving the weldability and weld strength, removing redundant structures while meeting the strength requirements, and reducing the self weight; the open battery frame is conducive to battery installation and can be repeatedly disassembled and assembled, facilitating process packaging and improving the post-maintenance performance; the middle connecting rod group connects the layout of the two side-hung battery frames, offsets the vibration of the left and right battery frames, reduces the deformation of the battery frame during driving, and improves the overall performance and safety of the battery frame; the integrated mounting plate design ingeniously utilizes the same mounting plate to simultaneously connect the battery frame, the middle connecting rod group, the battery middle tray and the vehicle frame longitudinal beam, reduces the number of mounting plates to be arranged, strengthens the integration of the battery frame, and further reduces the weight; the obstacle avoidance diagonal brace design serves as a reinforcing structure of the battery frame, improves the structural strength of the battery frame, reduces the deformation of the battery frame, reduces the self weight while ensuring the strength, and provides space for the arrangement and installation of high-voltage lines and battery water cooling pipes.

[0012] In addition, due to the structural optimization of the battery frame, the installation space of the vehicle fender is also optimized, which provides technical support and installation space for the structural optimization of the fender integrated support, saves weight and space for the overall vehicle arrangement, and completely avoids the fracture problem caused by the suspended structure of the traditional fender support. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structure diagram of a side-hung battery box frame provided by the utility model embodiment;

[0014] Figure 2 A structure diagram of a side-hung battery box frame (single side) provided by the utility model embodiment;

[0015] Figure 3 A Figure 2 An inside view of a local area A;

[0016] Figure 4 This is a schematic diagram of the structure of the battery tray (for mounting the battery pack) provided in an embodiment of the present invention. Figure 1 ;

[0017] Figure 5 This is a schematic diagram of the structure of the battery tray (for mounting the battery pack) provided in an embodiment of the present invention. Figure 2 ;

[0018] Figure 6 This is a schematic diagram of the structure of the battery tray (for mounting the battery pack) provided in an embodiment of the present invention. Figure 3 ;

[0019] The markings in the accompanying drawings include: battery frame 1, bottom frame 11, support rod 111, side frame 12, front diagonal brace 121, rear diagonal brace 122, middle side crossbeam 123, battery protection mounting hole 124, integrated connecting plate 13, reinforcing connecting plate 14, mudguard integrated bracket 15, reinforcing support plate 16, middle connecting rod 2, battery middle tray 3, crossbeam mounting plate one 31, crossbeam mounting plate two 32, and longitudinal beam mounting plate 33. Detailed Implementation

[0020] The following detailed explanation illustrates the specific implementation methods:

[0021] The basic implementation examples are as follows: Figure 1 As shown: A side-mounted battery box frame includes a central connecting rod assembly and two battery frames 1 symmetrically arranged on both sides of the central connecting rod assembly.

[0022] The intermediate connecting rod group is connected to at least the two ends and the middle part of the battery frame 1. In this embodiment, the intermediate connecting rod group includes three intermediate connecting rods 2, which are respectively connected to the two ends and the middle part of the battery frame 1 to counteract the vibration of the left and right battery frames 1, greatly improve the integrity and safety of the side-mounted battery frame 1, and minimize the deformation of the side-mounted battery frame 1 during driving.

[0023] like Figure 1 and Figure 2 As shown, the battery frame 1 includes a base frame 11 and two side frames 12 vertically mounted at both ends of the base frame 11, forming an open cuboid frame structure. This structure makes full use of the vehicle's interior space and facilitates future battery capacity expansion. It is constructed by welding grooved bent parts, eliminating redundant structures while meeting strength requirements, further reducing weight.

[0024] A group of front inclined braces 121 and a group of rear inclined braces 122 are respectively installed in the two side frames 12. In the embodiment, the group of front inclined braces 121 includes four brace bars I, each of which is located at a corner of the corresponding side frame 12 and connects two adjacent side edges of the corresponding corner, thereby providing installation space for the connection of high-voltage wires and water pipes; the group of rear inclined braces 122 includes two brace bars II connecting opposite two side edges of the corresponding side frame 12, and the two brace bars II are parallel; all the inclined braces are battery frame reinforcing structures.

[0025] A fender integrated support 15 is installed on the outer side of one side frame 12. Compared with a traditional fender support, the fender integrated support 15 cancels the base and the support bar 111, has a short extension arm and a light weight, and can be directly connected to the battery box frame. In the embodiment, the group of front inclined braces 121 and the fender integrated support 15 are located on the same side.

[0026] A support bar group is installed in the bottom frame 11, and the support bar group includes a plurality of support bars 111 for reinforcing the structural strength of the bottom end and improving the ability to resist deformation.

[0027] As shown in Figure 2 , a middle side beam 123 is arranged in the middle of each of the two side frames 12, and the middle side beam 123 has a U-shaped structure. A reinforcing tray 16 is installed on the middle side beam 123 of one side, and the reinforcing tray 16 is perpendicular to the middle side beam 123. Figure 2 Figure 3 A plurality of groups of battery protection installation holes 124 are formed in the beams of the two side frames 12. By using the combination of different positions of the battery protection installation holes 124, the battery protection support can be flexibly matched to adapt to different types of batteries.

[0028] A battery middle tray 3 is detachably installed in the battery frame 1, so that the battery frame 1 forms upper and lower layers for placing battery packs and forms pipeline layout space. The pipelines include high-voltage wires, low-voltage wires and water pipe channels. Thus, two layers of trays are formed in the battery frame 1 for placing battery packs, wherein the lower tray is not detachable, and the battery middle tray 3 is a drawer type movable structure connected to the battery frame 1 by bolts.

[0029] As shown in Figure 2 , Figure 4 , Figure 5 and Figure 6 , the two ends of the battery middle tray 3 are respectively provided with a beam mounting plate I 31 and a beam mounting plate II 32, and one side is provided with a longitudinal beam mounting plate 33. Figure 2 Figure 3 The beam mounting plate I 31 is detachably connected to the middle side beam 123 on which the reinforcing tray 16 is installed, and the beam mounting plate I 31 is mounted on the reinforcing tray 16. Figure 5 ​​As shown, the middle side cross beam 123 on the other side of the battery box is detachably connected to the beam mounting plate two 32, wherein the structure of the beam mounting plate two 32 is matched with the structure of the middle side cross beam 123 of the battery box 1, forming a U-shaped structure that can be inserted; the longitudinal beam mounting plate 33 is connected to the integrated connecting plate 13 group of the battery box 1; when connected, it can be connected by bolts to realize detachable connection. This structure is matched with the structure of the battery pack to be installed, which meets the overall and local bearing capacity while reducing structural redundancy, reducing self weight and cost.

[0030] The battery box 1 is provided with an integrated connecting plate 13 group on the side close to the intermediate connecting rod group, which is used for the connection of the battery box 1 and the battery middle tray 3, the connection of the battery box 1 and the vehicle frame longitudinal beam, and the connection of the intermediate connecting rod group and the battery box 1.

[0031] It also includes a reinforcing connecting plate 14, which is located on the side away from the intermediate connecting rod group to connect the battery middle tray 3 and the battery box 1, and is used to strengthen the overall strength of the battery box and prevent the battery box from sinking under stress. Specifically, it is connected to the bottom of the battery box 1; as Figure 1 As shown, after the battery middle tray 3 is installed on the battery box 1, the reinforcing connecting plate 14 is connected to the battery middle tray 3 and the battery box 1 by bolts to improve stability. The reinforcing connecting plate 14 is provided with a gasket for reserving the installation space of the thermal insulation layer. In actual use, the thermal insulation layer is installed between the reinforcing connecting plate 14 and the battery shell. Because the space is optimized to the limit, it is necessary to move the reinforcing connecting plate 14 outward by adding a gasket to provide space for the thermal insulation layer.

[0032] A vehicle is also provided, which is installed with the above-mentioned side-hung battery box frame. In specific application, the battery box 1 is welded according to the above structure, and at the same time, the intermediate connecting rod group is connected according to the above requirements, the battery middle tray 3 is Figure 1 inserted in the arrow direction, and detachably connected to the battery box 1 by bolts according to the above structure; the battery middle tray 3 and the battery box 1 are connected by the reinforcing connecting plate 14; the side-hung battery box frame of the present scheme is connected with the vehicle frame longitudinal beam through the two groups of integrated mounting plates 13, the vehicle frame longitudinal beam is located between the two groups of integrated mounting plates 13, the battery pack is placed in the space formed by the two side battery boxes 1 and the battery middle tray 3, and the pipeline connection layout is realized through the space formed by the battery box frame of the present scheme.

[0033] Compared with the prior art, the battery box frame and the vehicle provided by the embodiment adopt a groove-shaped bending piece plus welding connection, improve welding performance and welding strength, remove redundant structures while meeting the strength, and reduce self weight; adopt an open frame plus plug-in tray structure, facilitate battery falling and loading, and facilitate process sub-packaging of the tray in the battery, improve post-maintenance performance; the middle connecting rod connects two groups of side-mounted batteries in three sections, offsets vibration of the left and right battery frames, reduces deformation of the battery frame during driving, and improves overall performance and safety of the battery frame; the integrated mounting plate design skillfully utilizes the same mounting plate to simultaneously connect the battery frame, the middle connecting rod group, the tray in the battery, and the frame longitudinal beam, reduces the number of mounting plates to be arranged, strengthens the integrality of the battery frame, and further reduces weight; the obstacle avoidance diagonal brace design ensures the strength while reducing the self weight, provides space for arrangement and installation of high-voltage lines and battery water cooling pipes; the longitudinal beam connecting plate arranged outside the battery frame effectively reduces sinking deformation of the battery frame, and provides installation space for the thermal insulation layer through the longitudinal beam gasket; the application of the reinforcing connecting plate makes up for the vacancy of the lack of support in the middle part of the tray, facilitates disassembly and assembly, and ensures the structural reliability of the overall battery frame.

[0034] Due to the structural optimization of the battery box frame, the installation space of the vehicle mudguard is also optimized, technical support and installation space are provided for structural optimization of the mudguard integrated support, weight and space are saved for overall vehicle arrangement, and compared with the traditional mudguard support, the optimized mudguard integrated support cancels the base and the supporting rod, shortens the arm, reduces the self weight, can be directly connected to the battery box frame, and completely avoids the fracture problem caused by the suspended structure.

[0035] The overall structure of the frame is simple, the self weight is light, the internal space of the vehicle can be fully utilized, and convenience is provided for later battery expansion as much as possible.

[0036] The above only describes the embodiments of the utility model, and the well-known specific structures and characteristics in the scheme are not described in detail, the ordinary skilled in the art knows all the ordinary technical knowledge in the technical field of the utility model before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before the date, the ordinary skilled in the art can improve and implement the scheme under the inspiration of the present application, some typical well-known structures or well-known methods should not be an obstacle for the ordinary skilled in the art to implement the present application. It should be pointed out that, for the skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect and practicality of the utility model.

Claims

1. A side-hanging battery box frame, characterized by, The battery frame is an open cuboid frame structure formed by welding a bent piece, comprising a bottom frame and two side frames vertically installed at both ends of the bottom frame, wherein a front diagonal brace group and a rear diagonal brace group are respectively installed in the two side frames. The battery frame is an open cuboid frame structure formed by welding a bent piece, comprising a bottom frame and two side frames vertically installed at both ends of the bottom frame, wherein a front diagonal brace group and a rear diagonal brace group are respectively installed in the two side frames.

2. The side-hanging battery box frame according to claim 1, characterized in that, The middle part of each side frame is provided with a middle part side beam, and one of the middle part side beams is provided with a reinforcing plate which is perpendicular to the middle part side beam.

3. A side-hung battery box frame according to claim 2, wherein, The two ends of the battery tray are respectively provided with a beam mounting plate one and a beam mounting plate two, one side is provided with a longitudinal beam mounting plate, the beam mounting plate one is detachably connected to the middle part side beam provided with the reinforcing plate and is mounted on the reinforcing plate, the beam mounting plate two is detachably connected to the middle part side beam on the other side of the battery frame, and the longitudinal beam mounting plate is connected to the integrated connecting plate group of the battery frame.

4. The side-hanging battery box frame according to claim 1, wherein The front diagonal brace group comprises four brace rods one, which are respectively located at the four corners of the corresponding side frame and connect two adjacent side edges of the corresponding corner.

5. The side-hanging battery box frame according to claim 1, wherein The rear diagonal brace group comprises two brace rods two which connect the opposite two side edges of the corresponding side frame and are parallel to each other.

6. The side-hanging battery box frame according to claim 1, wherein The bottom frame is provided with a support rod group.

7. The side-hanging battery box frame according to claim 1, wherein It also comprises a reinforcing connecting plate which is located away from the middle connecting rod group and connects the battery tray and the battery frame.

8. The side-hanging battery box frame according to claim 1, wherein A plurality of groups of battery protection mounting holes are formed on the beams of the two side frames.

9. The side-hanging battery box frame according to claim 1, wherein The outer side of one of the side frames is provided with a fender integrated support.

10. A vehicle characterized by comprising: A side-hung battery box frame as claimed in any one of claims 1-9 is installed.

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