A subframe assembly and a suspension assembly having the subframe assembly

Abstract

The utility model relates to the field of sub-frames, specifically a sub-frame assembly and a suspension assembly with the sub-frame assembly, comprising a sub-frame body, wherein the sub-frame body comprises a longitudinal beam assembly and a cross beam assembly; the cross beam assembly comprises a battery anti-collision beam connected to the longitudinal beam assembly; the lowermost edge of the battery anti-collision beam is arranged farther away from the vehicle body than the lowermost edge of a power battery shell; the arrangement of the battery anti-collision beam disclosed in the utility model can not only ensure the overall structural strength of the sub-frame assembly, but also limit the height of the lowermost edge of the battery anti-collision beam, thereby giving it a good protective effect; when the battery anti-collision beam is arranged below the power battery, when a frontal collision occurs, the sub-frame can absorb energy, thereby reducing the risk of damage to the power battery.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary frames, in particular to an auxiliary frame assembly and a suspension assembly having the auxiliary frame assembly. Background Art

[0002] With the rapid development of the new energy vehicle market, the performance requirements for the whole vehicle are becoming higher and higher, the safety performance is more demanding, the reliability and long mileage, energy saving and consumption reduction requirements are stricter. In order to meet these requirements, the subframe plays a vital role in the whole vehicle.

[0003] The subframe is an important component of the vehicle and an important part of the vehicle chassis.

[0004] The subframe has two main functions. One is to reduce the noise and vibration of the road and powertrain transmitted to the whole vehicle, thereby improving the riding experience of the passengers. The other is to serve as a carrier of chassis parts, so that the chassis parts are first installed on the subframe to form an assembly, and then installed as a whole on the body to facilitate the assembly and loading of the whole vehicle.

[0005] At present, the front subframe assemblies commonly used in the whole vehicle market basically have two structures: frame type and butterfly type.

[0006] For example, the content disclosed in patent 201922334713.2 - Subframe assembly and vehicle containing the same.

[0007] Although they can all be used in practice, when used on electric vehicles, the subframe lacks the ability to protect the power battery.

[0008] At the same time, when the vehicle is involved in a head-on collision, the subframe has poor energy absorption capacity.

[0009] In addition, the layout of other equipment and parts on the traditional subframe is rather messy, and the space utilization is poor.

[0010] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing subframe structure. Utility Model Content

[0011] The utility model aims to provide a subframe assembly with power battery protection capability.

[0012] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0013] A subframe assembly includes a subframe body, wherein the subframe body includes a longitudinal beam assembly and a cross beam assembly;

[0014] The crossbeam assembly includes a battery anti-collision beam connected to the longitudinal beam assembly; the lowermost edge of the battery anti-collision beam is arranged farther away from the vehicle body than the lowermost edge of the power battery shell.

[0015] The minimum distance from the lower end face of the battery anti-collision beam to the horizontal plane is less than the minimum distance from the lower end face of the power battery case to the horizontal plane.

[0016] The longitudinal beam assembly includes a longitudinal beam main body, and the longitudinal beam main body includes two relatively distributed single longitudinal beam assemblies; the two single longitudinal beam assemblies are connected by a cross beam assembly;

[0017] The cross beam assembly includes a front cross beam, a middle cross beam, and a battery anti-collision beam; the front cross beam, the middle cross beam, and the battery anti-collision beam are arranged at intervals; both ends of the front cross beam, the middle cross beam, and the rear cross beam are respectively connected to adjacent single longitudinal beam assemblies; the horizontal projection of the subframe body is in the shape of the Chinese character "Lv".

[0018] The single longitudinal beam assembly includes a longitudinal beam body; the longitudinal beam body includes a front section longitudinal beam and a rear section longitudinal beam; the front section longitudinal beam is connected to the rear section longitudinal beam; the two single longitudinal beam assemblies and the cross beam assembly enclose a structure with a horizontal projection in the shape of the Chinese character "Lv".

[0019] An installation type anti-collision beam is provided at the end of the subframe body; the installation type anti-collision beam includes an anti-collision cross beam, and both ends of the anti-collision cross beam are respectively connected to the ends of the corresponding single longitudinal beam assembly.

[0020] A suspension assembly includes the subframe assembly; a front driving force assembly, an electric compressor, an electric steering mechanism, and an electric steering mechanism are provided on the subframe assembly.

[0021] The power assembly is connected to the subframe body through a plurality of mounting brackets; the power assembly and the electric compressor are arranged side by side; a control arm is respectively connected to both sides of the subframe body;

[0022] The electric steering mechanism and the anti-roll bar are both horizontally arranged on the subframe body; the power assembly, the electric steering mechanism, and the anti-roll bar are sequentially arranged at intervals along the X-axis direction of the vehicle body.

[0023] The advantages of the present utility model are as follows:

[0024] The present utility model discloses a subframe assembly and a suspension assembly having the subframe assembly.

[0025] The setting of the battery anti-collision beam disclosed in the present utility model can not only ensure the overall structural strength of the subframe assembly, but also, by limiting the height of the lowest edge of the battery anti-collision beam, make it have a good protection effect. When the battery anti-collision beam is lower than the power battery arrangement, in the event of a frontal collision, the subframe can absorb energy, and the risk of damage to the power battery can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following briefly describes the content expressed in each drawing of the specification of the present utility model and the marks in the drawings:

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a structural schematic diagram of the first viewing angle when the corresponding components are installed on the utility model.

[0029] Figure 3 It is a structural schematic diagram of the second viewing angle when the corresponding components are installed on the utility model.

[0030] The marks in the above figure are:

[0031] 1. Subframe assembly, 2. Mounted anti-collision beam, 3. Front powertrain, 4. Electric compressor, 5. Control arm, 6. Lateral stabilizer bar, 7. Electric steering mechanism. DETAILED DESCRIPTION

[0032] The specific implementation methods of the present utility model will be further explained in detail below by describing the optimal embodiments with reference to the accompanying drawings.

[0033] A subframe assembly 1 includes a subframe body 1-1, wherein the subframe body 1-1 includes a longitudinal beam assembly and a cross beam assembly; the cross beam assembly includes a battery anti-collision beam 14 connected to the longitudinal beam assembly; the lowermost edge of the battery anti-collision beam 14 is arranged farther away from the vehicle body than the lowermost edge of a power battery shell; the arrangement of the battery anti-collision beam 14 disclosed in the utility model can not only ensure the overall structural strength of the subframe assembly 1, but also limit the height of the lowermost edge of the battery anti-collision beam 14, so that it has a good protective effect. When the battery anti-collision beam 14 is arranged below the power battery, the subframe can absorb energy in the event of a frontal collision, thereby reducing the risk of damage to the power battery.

[0034] The auxiliary frame assembly 1 disclosed in the utility model is mainly suitable for a McPherson suspension system.

[0035] The sub-frame assembly 1 disclosed in the utility model mainly includes a sub-frame body 1-1, and the sub-frame body 1-1 is the main structure of the sub-frame assembly 1, and the sub-frame body 1-1 includes a longitudinal beam assembly and a cross beam assembly; the longitudinal beam assembly and the cross beam assembly cooperate with each other to form the main skeleton structure of the sub-frame body 1-1, and in the utility model, the cross beam assembly includes a battery anti-collision beam 14 connected to the longitudinal beam assembly; the lower edge of the battery anti-collision beam 14 is arranged farther away from the vehicle body than the lower edge of the power battery shell; thereby, it has a good protective effect. When the battery anti-collision beam 14 is arranged below the power battery, when a frontal collision occurs, the sub-frame can absorb energy and reduce the risk of damage to the power battery.

[0036] Meanwhile, in the present utility model, since the battery anti-collision beam 14 and the lower end face of the power battery housing are generally arranged horizontally, during actual design, it is required that the minimum distance from the lower end face of the battery anti-collision beam 14 to the horizontal plane is less than the minimum distance from the lower end face of the power battery housing to the horizontal plane. Such a setting makes the battery anti-collision beam 14 lower than the power battery arrangement, enabling the battery anti-collision beam 14 to play a good role in isolation and protection, and avoiding the impact of foreign objects on the power battery when the vehicle is running.

[0037] Furthermore, in the present invention, the longitudinal beam assembly includes a longitudinal beam main body, and the longitudinal beam main body includes two relatively distributed single longitudinal beam assemblies 11. The two single longitudinal beam assemblies 11 are connected by a cross beam assembly. The cross beam assembly includes a front cross beam 12, a middle cross beam 13, and a battery anti-collision beam 14. The front cross beam 12, the middle cross beam 13, and the battery anti-collision beam 14 are arranged at intervals. The two ends of the front cross beam 12, the middle cross beam 13, and the rear cross beam are respectively connected to adjacent single longitudinal beam assemblies 11. The horizontal projection of the subframe body 1-1 is in a shape like the Chinese character 'Lv'. Based on such a setting, the longitudinal beam assembly disclosed in the present invention is integrally in a shape like the Chinese character 'Lv' or 'Ri'. Such a setting can well ensure the overall structural strength of the longitudinal beam assembly.

[0038] Meanwhile, in the present invention, the single longitudinal beam assembly 11 includes a longitudinal beam body. The longitudinal beam body includes a front section longitudinal beam and a rear section longitudinal beam. The front section longitudinal beam is connected to the rear section longitudinal beam. The two single longitudinal beam assemblies 11 and the cross beam assembly enclose a structure with a horizontal projection in the shape of the Chinese character 'Lv'. In the present invention, the longitudinal beam body can be an integrated structure or a two-section structure. In the present invention, the front section longitudinal beam and the rear section longitudinal beam can be integrally formed, or the connection between the two can be achieved by lap joint and welding.

[0039] Meanwhile, in the present invention, an installed anti-collision beam 2 is provided at the end of the subframe body 1-1. The installed anti-collision beam 2 plays a good protective role. Specifically, in the present invention, the installed anti-collision beam 2 includes an anti-collision cross beam, and the two ends of the anti-collision cross beam are respectively connected to the ends of the corresponding single longitudinal beam assembly 11. Through the installed anti-collision cross beam in the present invention, installation and fixing points can be provided for the front bumper, reducing the thickness and material of the plastic front end module, which is beneficial to the utilization and layout of the front cabin space of the whole vehicle.

[0040] A suspension assembly includes the subframe assembly 1. The subframe assembly 1 is provided with a front driving force assembly 3, an electric compressor 4, an electric steering mechanism 7, and an electric steering mechanism 7. Through the above design in the present invention, the subframe assembly 1 disclosed in the present invention can centrally assemble multiple assembly parts. Such a setting can, to a certain extent, be beneficial to the integration of the whole vehicle and at the same time facilitate the installation and placement of each component in the suspension system.

[0041] In the present invention, the power assembly is connected to the sub-frame body 1-1 through a plurality of mounting brackets; generally, three mounting brackets are selected to connect the power assembly, two mounting brackets are arranged on the front cross beam 12, and one mounting bracket is arranged on the middle cross beam 13. The power assembly is fixed in a triangle, which can ensure the stability of the power assembly installation with a minimum of fixing units.

[0042] At the same time, in the present invention, the powertrain and the electric compressor 4 are arranged in parallel; the parallel arrangement of the two can reduce the occupied longitudinal position of the sub-frame and facilitate the arrangement and placement of other components; a control arm 5 is connected to each side of the sub-frame body 1-1; based on such a setting, the subsequent connection with the wheels is convenient.

[0043] At the same time, in the present invention, the electric steering mechanism 7 and the lateral stabilizer bar 6 are both arranged transversely on the sub-frame body 1-1; the power assembly, the electric steering mechanism 7 and the lateral stabilizer bar 6 are spaced in sequence along the X-axis direction of the vehicle body; the forward direction of the vehicle is the X-axis, which belongs to the known technology and will not be repeated here. The present invention requires that the electric steering mechanism 7 and the lateral stabilizer bar 6 are both arranged transversely on the sub-frame body 1-1; the power assembly, the electric steering mechanism 7 and the lateral stabilizer bar 6 are spaced in sequence along the X-axis direction of the vehicle body; installation interference between adjacent components can be avoided, and the installation and placement of each component on the sub-frame assembly 1 is also convenient.

[0044] specific;

[0045] The subframe assembly 1 disclosed in the present invention mainly includes a subframe body 1-1 and an installed anti-collision beam; the subframe body 1-1 and the installed anti-collision beam are connected and fixed by bolts; the subframe body 1-1 and the front driving force assembly 3 are connected and fixed by bolts; the subframe body 1-1 and the electric compressor 4 are connected and fixed by bolts; the subframe body 1-1 and the control arm 5 and the lateral stabilizer bar 6 of the McPherson suspension are connected and fixed by bolts; the subframe body 1-1 and the electric steering mechanism 7 are connected and fixed by bolts.

[0046] The subframe assembly 1 disclosed in the present invention is mainly used for McPherson suspension, and the overall component layout is highly integrated. At the same time, the subframe assembly 1 includes a battery anti-collision beam 14; the battery anti-collision beam 14 can serve as the rear cross beam of the subframe assembly 1, which can not only ensure the overall structural strength of the subframe assembly 1, but also reduce the components of the whole vehicle and reduce costs. When a frontal collision occurs, the subframe can absorb energy and reduce the risk of damage to the power battery.

[0047] At the same time, a small energy absorption box can be provided for the collision of the entire vehicle. When a head-on collision occurs, the installed anti-collision beam can be deformed to absorb energy, and can be replaced during after-sales maintenance, reducing the cost of repairing the entire vehicle after a collision.

[0048] The subframe carries the compressor and uses multi-level shock absorption to avoid direct connection between the compressor and the body, which can optimize the NVH performance of the vehicle and improve comfort.

[0049] The installed anti-collision beam can provide a mounting point for the front bumper, reduce the thickness and material of the plastic front-end module, and facilitate the utilization and layout of the front cabin space of the entire vehicle.

[0050] It can provide installation and fixing points for the front bottom guard plate, reduce additional bottom guard plate brackets, and help reduce costs.

[0051] It can fix the cooling pipeline of the front drive power assembly 3 and solve the pipeline connection problem after the front drive main module is put into operation.

[0052] The subframe body 1-1 is connected and fixed to the mounted anti-collision cross beam by bolts on the left and right sides.

[0053] The battery anti-collision beam 14 is a component of the subframe body 1-1 and is connected to the subframe longitudinal beam by welding. On the one hand, it can increase the strength and rigidity of the subframe. On the other hand, the lower surface of the beam is lower than the lower surface of the power battery housing. When a head-on collision occurs, the beam can deform and absorb energy, thereby providing protection for the power battery.

[0054] The front driving force assembly 3 is connected to the subframe body 1-1 by three bolts (left front, right front, and rear), the power assembly is on the left, the electric compressor 4 is on the right side of the front driving force assembly 3, there is one control arm 5 on each side of the McPherson suspension, which is fixed to the subframe body 1-1 by bolts, the electric steering mechanism 7 is at the rear of the front driving force assembly 3, and is laterally arranged and fixed to the subframe body 1-1, and the lateral stabilizer bar 6 is at the rear of the electric steering mechanism 7, and is laterally arranged and fixed to the subframe body 1-1.

[0055] In summary, the use of this multifunctional new energy vehicle subframe assembly 1 can achieve high integration of vehicle parts, realize modular assembly in the final assembly plant, reduce costs, and improve the NVH comfort of the vehicle, which has high practical value.

[0056] Obviously, the specific implementation of the present invention is not limited by the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A subframe assembly, characterized in that: It includes a subframe body, and the subframe body includes a longitudinal beam assembly and a crossbeam assembly; The crossbeam assembly includes a battery anti-collision beam connected to the longitudinal beam assembly; the lowest edge of the battery anti-collision beam is set farther away from the vehicle body than the lowest edge of the power battery case.

2. A subframe assembly according to claim 1, characterized in that: The minimum distance from the lower end face of the battery anti-collision beam to the horizontal plane is less than the minimum distance from the lower end face of the power battery case to the horizontal plane.

3. The subframe assembly according to claim 1, characterized in that: The longitudinal beam assembly includes a longitudinal beam main body, and the longitudinal beam main body includes two relatively distributed single longitudinal beam assemblies; the two single longitudinal beam assemblies are connected by the crossbeam assembly; The crossbeam assembly includes a front crossbeam, a middle crossbeam and a battery anti-collision beam; the front crossbeam, the middle crossbeam and the battery anti-collision beam are arranged at intervals; both ends of the front crossbeam, the middle crossbeam and the rear crossbeam are respectively connected to adjacent single longitudinal beam assemblies; the horizontal projection of the subframe body is in the shape of a Chinese character 'Lv'.

4. A subframe assembly according to claim 3, characterized in that: The single longitudinal beam assembly includes a longitudinal beam body; the longitudinal beam body includes a front section longitudinal beam and a rear section longitudinal beam; the front section longitudinal beam is connected to the rear section longitudinal beam; the two single longitudinal beam assemblies and the crossbeam assembly enclose a structure with a horizontal projection in the shape of a Chinese character 'Lv'.

5. The subframe assembly according to claim 1, characterized in that: An installed anti-collision beam is provided at the end of the subframe body; the installed anti-collision beam includes an anti-collision crossbeam, and both ends of the anti-collision crossbeam are respectively connected to the ends of the corresponding single longitudinal beam assembly.

6. A suspension assembly, characterized in that: It includes the subframe assembly according to any one of claims 1-5; a front driving force assembly, an electric compressor, an electric steering mechanism and an electric steering mechanism are provided on the subframe assembly.

7. A suspension assembly according to claim 6, characterized in that: The power assembly is connected to the subframe body through a plurality of mounting brackets; the power assembly and the electric compressor are arranged side by side; a control arm is respectively connected to both sides of the subframe body; The electric steering mechanism and the anti-roll bar are both horizontally arranged on the subframe body; the power assembly, the electric steering mechanism and the anti-roll bar are sequentially arranged at intervals along the X-axis direction of the vehicle body.

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