CN207711787U - Sling point structure and front floor structure of vehicle body before a kind of power battery box - Google Patents

Abstract

The utility model discloses a suspension point structure in front of a power battery box, which comprises a suspension point bracket, the middle part of the suspension point bracket is provided with a threaded hole for connecting the battery, and the side of the suspension point bracket is provided with a useful The first flange for connecting the front floor, the second flange for connecting the lower beam of the front floor and the third flange for connecting the middle channel. The utility model is simple in structure and easy to use. It provides an effective support position for the battery pack in the non-beam area by setting three sets of flanges and two auxiliary welding ribs on the suspension point bracket. One of the suspension points The rear end is connected to the front floor under-beam, the front end is connected to the front reinforcement of the front floor, the other side is connected to the lower edge of the middle channel, and the rear is connected to the front under-floor under-beam to form a higher structural strength.

Description

A front suspension point structure of a power battery box and a front floor structure of a vehicle body

technical field

The utility model relates to a front suspension point structure, which belongs to the technical field of body parts, in particular to a front suspension point structure of a power battery box.

Background technique

The power battery system of an electric vehicle is an important component with large volume and heavy weight. In order to ensure reliable installation and fixation on the vehicle body, the strength of its fixing point must be high enough. If the fixing point of the battery pack is directly on the key beam of the vehicle body, it is relatively easy to ensure the strength of the fixing point. When the fixing point of the battery pack is not on the beam, but near the beam, or in a non-beam area, the structural design of the fixing point will be much more difficult. Therefore, how to design the structure of the battery hanging point in the non-beam area has become a technical problem.

In the specification of Chinese utility model patent CN204323023U, a battery rear fixing device for an electric passenger car is disclosed. Fixed connection, the fixed reinforcement is fixedly connected to the battery fixed connection plate through the battery installation point in a bolt-through manner, and each battery fixed connection plate is fixedly connected to the battery, which meets the firmness of the battery installation and the vertical impact resistance performance. The utility model can be easily disassembled and assembled, so that the special requirements for the battery installation of the electric passenger car are realized with a simple structure and low cost. However, the premise of its technical solution is to fix the battery to the body beam, and this technical solution cannot be directly used to fix the battery in the non-beam area.

In the description of the Chinese utility model patent CN 205997728 U, a power battery pack rear fixing bracket connection structure is disclosed, which belongs to the technical field of body parts. It includes a power battery pack rear fixing bracket, the rear end of the power battery pack rear fixing bracket is fixedly connected to the front end of the rear floor side longitudinal beam, the front end is fixedly connected to the rear end of the front floor inner longitudinal beam, and the front side is connected to the rear floor front side. Beam fixed connection. The utility model connects the side longitudinal beam of the rear floor, the inner longitudinal beam of the front floor and the front beam of the rear floor through the rear fixing bracket of the power battery pack. The floor frame is connected together to ensure the strength of the fixed point of the power battery pack. However, there are several technical problems: 1. The premise of the technical solution is to fix the battery to the body beam, and this technical solution cannot be directly used to fix the battery on the non-beam area; 2. The connection between the hanging point bracket and the thin plate The contact area is small, and stress concentration will occur during connection; 3. The end face fixing points used to support and connect the battery are not strong enough.

Utility model content

Aiming at the defects in the above-mentioned prior art, the purpose of this utility model is to solve the above-mentioned insufficiencies in the background technology, and provide a suspension point structure in front of the power battery box, which adopts a funnel-shaped structure, and disperses the battery suspension point from the vehicle body floor. In order to solve the above problems, there may be stress concentration on the surface.

The utility model discloses a suspension point structure in front of a power battery box, which comprises a suspension point bracket, the middle part of the suspension point bracket is provided with a threaded hole for connecting the battery, and the side of the suspension point bracket is provided with a useful The first flange for connecting the front floor, the second flange for connecting the lower beam of the front floor and the third flange for connecting the middle channel.

In a preferred embodiment of the present utility model, the two ends of the first flange are provided with auxiliary welding ribs, and the auxiliary welding ribs at one end of the first flange are welded to the lower beam of the front floor, so that The auxiliary welding rib plate at the other end of the first flange is welded to the front reinforcement of the front floor.

In a preferred embodiment of the present utility model, the suspension point bracket is in the shape of an inverted cone.

In a preferred embodiment of the present utility model, the hanging point bracket includes a U-shaped seat and an L-shaped seat, and the U-shaped seat is welded to the L-shaped seat.

In a preferred embodiment of the present invention, the U-shaped seat includes a first bottom surface, a first flange and a third flange, and the first flange and the third flange are arranged on the bottom surface on both sides.

In a preferred embodiment of the present invention, the L-shaped seat includes a second bottom surface and a second flange, and the second flange is arranged at a side end of the second bottom surface.

In a preferred embodiment of the present invention, at least one end surface of the U-shaped seat and the L-shaped seat is welded to each other.

The invention also discloses a vehicle body front floor structure equipped with a front suspension point structure of a power battery box, which includes a front reinforcement, a front floor, a front floor lower beam, a front longitudinal beam of a vehicle body and a middle channel, the front longitudinal beam of a vehicle body There is a hanging point bracket between the middle channel, and it is characterized in that: the hanging point bracket is a front hanging point structure of the power battery box according to any one of claims 1-7, The suspension point bracket is arranged on the non-beam thin plate area of the front floor of the vehicle body.

In a preferred embodiment of the present utility model, the first flange of the suspension point bracket is welded to the front floor, the second flange of the suspension point bracket is welded to the front floor lower beam, The third flange of the suspension point bracket is welded to the middle channel, and the auxiliary welding ribs at both ends of the first flange are respectively welded to the lower cross beam of the front floor and the front reinforcement of the front floor.

The beneficial effects of the utility model are: the utility model is simple in structure and easy to use, and it provides effective support for the battery pack in the non-beam area by setting three sets of flanges and two auxiliary welding ribs on the suspension point bracket Position, one side of the hanging point, the rear end is connected to the front floor crossbeam, the front end is connected to the front reinforcement of the front floor, the other side is connected to the lower edge of the middle channel, and the rear side is connected to the front floor underbeam to form a higher structural strength , to maximize the connection range with the floor parts, while avoiding the connection with the weak area; the present invention effectively increases the contact area between the hanging point bracket and the thin plate by designing the hanging point bracket as an inverted cone shape, The technical problem of stress concentration is overcome; at the same time, the present invention designs the suspension point bracket as a split structure of a U-shaped seat and an L-shaped seat, and the end faces of the two are welded to each other, which constitutes a superimposition of two layers of material thickness through the position of the welding nut. , which not only ensures the strength of the fixed point, but also achieves the good manufacturability of the hanging point bracket itself.

Description of drawings

Fig. 1 is a schematic diagram of suspension on the vehicle body of a suspension point structure in front of a power battery box according to an embodiment of the utility model;

Fig. 2 is a schematic structural diagram of the environment components in the front hanging point area of a front hanging point structure of the power battery box according to the embodiment of the utility model;

Fig. 3 is a schematic diagram of the structure principle of the front suspension point of a front suspension point structure of the power battery box according to the embodiment of the utility model;

Fig. 4 is a schematic diagram of the shape of the front suspension point structure of a front suspension point structure of the power battery box according to the embodiment of the utility model;

Fig. 5 is a schematic diagram of the connection relationship between the front hanging point and the surrounding environment parts of a front hanging point structure of the power battery box according to the embodiment of the utility model;

Fig. 6 is a schematic diagram of the floor welding structure at the position of the front hanging point of a front hanging point structure of a power battery box according to an embodiment of the utility model;

Fig. 7 is a schematic diagram of the structure of the front hanging point itself of a front hanging point structure of the power battery box according to the embodiment of the utility model;

Fig. 8 is a schematic diagram of welding of parts of the front suspension point itself of a structure of the front suspension point of the power battery box according to the embodiment of the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The front suspension point structure of a power battery box shown in the accompanying drawings of the utility model includes a suspension point bracket 7, and the middle part of the suspension point bracket 7 is provided with a threaded hole for connecting the battery. The side is provided with a first flange 73 for connecting the front floor 8 , a second flange 72 for connecting the lower beam 3 of the front floor and a third flange 74 for connecting the middle channel 5 . Both ends of the first flange 73 are provided with auxiliary welding ribs 731, the auxiliary welding ribs 731 at one end of the first flange 73 are welded with the front floor lower beam 3, and the auxiliary welding ribs 731 at the other end of the first flange 73 are welded with Front floor front reinforcement 4 welded. The hanging point bracket 7 is in an inverted cone shape. The hanging point bracket 7 includes a U-shaped seat 75 and an L-shaped seat 76, and the U-shaped seat 75 and the L-shaped seat 76 are welded. The U-shaped seat 75 includes a first bottom surface 71 , a first flange 73 and a third flange 74 , and the first flange 73 and the third flange 74 are disposed on two sides of the first bottom surface 71 . The L-shaped seat 76 includes a second bottom surface 761 and a second flange 72 , and the second flange 72 is disposed on a side end of the second bottom surface 761 . At least one end surface of the U-shaped seat 75 and the L-shaped seat 76 is welded to each other.

The invention also discloses a vehicle body front floor structure equipped with a front suspension point structure of a power battery box, including a front reinforcement 4, a front floor 8, a front floor lower beam 3, a vehicle body front longitudinal beam 9 and a middle channel 5, A suspension point bracket 7 is arranged between the front longitudinal beam 9 of the vehicle body and the middle channel 5. The suspension point bracket 7 is a suspension point structure in front of the power battery box. area. The first flange 73 of the hanging point bracket 7 is welded to the front floor 8, the second flange 72 of the hanging point bracket 7 is welded to the lower beam 3 of the front floor, and the third flange 74 of the hanging point bracket 7 is welded to the middle channel 5 welding, the auxiliary welding ribs 731 at the two ends of the first flange 73 are respectively welded to the lower crossbeam 3 of the front floor and the reinforcement member 4 at the front part of the front floor.

As shown in Fig. 1 and Fig. 2, it is the installation structure of the electric vehicle power battery box 1 under the vehicle body floor. The position of the front hanging point 11 of the battery box is in a suspended state; the area 2 where the battery hanging point is located is close to the lower edge of the middle channel 5, but it is not directly under the lower crossbeam 3 of the front floor, nor is it the front reinforcement plate 4 of the front floor directly below the . Since the electric vehicle intends to continue to use the front longitudinal beam 9 of the basic vehicle, the lower crossbeam 3 of the front floor cannot move forward, so the battery hanging point area 2 is a non-beam thin plate area.

As shown in Figure 3, for the non-beam thin plate area, in order to improve the strength of the fixed point, the structural shape of the overall funnel shape 6 is adopted, or an inverted cone shape, and the contact position with the front floor 8 is a large divergent area. to avoid stress concentration.

As shown in Figure 4, the structural shape of the battery hanging point bracket 7 has a small range of the bottom surface with threaded holes, and the contact position between the battery hanging point bracket 7 and the floor is divergent, and they are respectively attached to the front floor and the middle channel. Lower edge, front floor lower cross member and front floor front reinforcement.

As shown in Figure 5, the first flange 73 of the hanging point bracket 7 is welded to the bottom of the front floor 8, the rear auxiliary welding rib 731 is connected to the front floor lower beam 3, and the front auxiliary welding rib 731 is connected to the front floor Front reinforcement 4. The third flange 74 of the hanging point bracket 7 is welded to the lower edge of the middle channel 5 . The second flange 72 of the hanging point bracket 7 is bonded and welded on the lower crossbeam 3 of the front floor. The hanging point support 7 forms a higher fixed point strength by being connected with the front floor 8, the lower beam 3 of the front floor, the front connecting plate 4 and the middle channel 5, and can bear the requirements of hanging the power battery box. On the other hand, the structure of the hanging point 7 has well strengthened the connection relationship between the lower beam 3 of the front floor, the connecting plate 4 at the front part of the front floor, and the middle channel 5 . achieve mutual reinforcement.

As shown in Figure 6, the welding relationship between the edge 81 of the front floor 8 and the middle channel 5, the other side is just the third flanging 74 of the hanging point bracket 7, which constitutes the welding between the three layers of material thickness, which can The welding strength between the battery hanging point bracket 7 and the side of the middle channel 5 is well improved.

As shown in Figure 7, the structural shape of the hanging point bracket 7 itself, the inner side of the bottom surface with the threaded hole for fixing the battery is welded with a nut 77, the hanging point bracket 7 is funnel-shaped as a whole, and the upper edge connected to the floor is U-shaped .

As shown in Figure 8, the hanging point support 7 is welded together by two U-shaped seats 75 and L-shaped seats 76, and the second bottom surface 761 of the L-shaped seat 76 is welded together with the first bottom surface 71 of the U-shaped seat 75. , have higher local strength, and the inner side is welded with nut 77. Hanging point support 7 is made up of U-shaped seat 75 and L-shaped seat 76, has better manufacturability.

The purpose of this utility model is to provide a funnel-shaped battery hanging point structure, in order to provide higher fixed point strength for non-beam areas, the effect of increasing the contact area to overcome stress concentration is adopted. This structure can strengthen the structural strength of the floor part itself at the same time, further improving the structural strength of the battery hanging point.

It should be understood that, the above are only specific embodiments of the present utility model, but the scope of protection of the present utility model is not limited thereto, and any person familiar with the art can easily think of All changes or replacements should fall within the protection scope of the present utility model.

Claims (9)

1. sling point structure before a kind of power battery box, including sling point holder (7), set in the middle part of the sling point holder (7) It is equipped with the threaded hole for connecting battery, it is characterised in that：The side of the sling point holder (7) is provided with preceding for connecting The first flange (73) of plate (8), the second flange (72) for connecting preceding floor bottom end rail (3) and for connect in channel (5) Third flange (74).

2. sling point structure before a kind of power battery box according to claim 1, it is characterised in that：First flange (73) the auxiliary that is provided at both ends with welds floor (731), the auxiliary welding floor (731) of described first flange (73) one end and institute Preceding floor bottom end rail (3) welding is stated, the auxiliary welding floor (731) of the first flange (73) other end adds with preceding ground prelaminar part Strong part (4) welding.

3. sling point structure before a kind of power battery box according to claim 1, it is characterised in that：The sling point holder (7) it is in back taper.

4. sling point structure before a kind of power battery box according to claim 1, it is characterised in that：The sling point holder (7) include U-shaped seat (75) and L-shaped seat (76), the U-shaped seat (75) and the L-shaped seat (76) are welded.

5. sling point structure before a kind of power battery box according to claim 4, it is characterised in that：The U-shaped seat (75) Including the first bottom surface (71), the first flange (73) and third flange (74), first flange (73) and the third flange (74) both sides of first bottom surface (71) are set to.

6. sling point structure before a kind of power battery box according to claim 4, it is characterised in that：The L-shaped seat (76) Including the second bottom surface (761) and the second flange (72), second flange (72) is set to the side of second bottom surface (761) End.

7. sling point structure before a kind of power battery box according to claim 4, it is characterised in that：The U-shaped seat (75) It is welded to each other with described at least one end face of L-shaped seat (76).

8. a kind of front floor structure of vehicle body being equipped with sling point structure before power battery box, including it is front reinforcer (4), preceding Plate (8), preceding floor bottom end rail (3), front stringpiece of vehicle body (9) and middle channel (5), the front stringpiece of vehicle body (9) and the middle channel (5) sling point holder (7) is provided between, it is characterised in that：The sling point holder (7) is any one in claim 1-7 Sling point structure before a kind of power battery box described in item claim, the sling point holder (7) are set to front floor of automobile body The caul plate area of non-beam.

9. a kind of front floor structure of vehicle body being equipped with sling point structure before power battery box according to claim 8, It is characterized in that：The first flange (73) of the sling point holder (7) is welded with the preceding floor (8), the sling point holder (7) The second flange (72) welded with the preceding floor bottom end rail (3), the third flange (74) of the sling point holder (7) with it is described The welding of middle channel (5), the auxiliary welding floor (731) at the first flange (73) both ends respectively with the preceding floor bottom end rail (3) it is welded with the preceding ground prelaminar part reinforcer (4).