CN212148387U

CN212148387U - Vehicle power battery front end protection device and vehicle

Info

Publication number: CN212148387U
Application number: CN201922311751.6U
Authority: CN
Inventors: 邓善良; 刘梦莹; 董瑞强
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-12-15
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a vehicle power battery front end protection device and vehicle, wherein two-layer "U" shape punching press sheet metal component is connected in order to form a confined cavity through the welding form about the protection device adopts. The vehicle power battery front end protection device is characterized in that the Y-direction size covers the Y-direction size of the vehicle power battery, and the Z-direction lowest point is lower than the Z-direction lowest point of the vehicle power battery.

Description

Vehicle power battery front end protection device and vehicle

Technical Field

The utility model relates to a vehicle protection device, more specifically relates to a device that protects vehicle power battery front end.

Background

With the social development, the environmental awareness of the citizens is continuously enhanced, the energy crisis and the environmental pollution problem are more and more serious, and the pure electric vehicle is increasingly favored by the public. Demand for electric vehicles is increasing. At present, the conditions of domestic vehicles on running roads are not uniform, and particularly, in suburbs, a lot of severe and fluctuant roads exist, wherein the severe fluctuant roads include gravel roads, highways, rail crossing roads and the like. The severe and fluctuant road surface is easy to cause the damages such as impact, puncture and the like to the bottom of the vehicle.

The power battery of the electric vehicle is usually disposed under the passenger compartment of the vehicle and connected to the vehicle body structure by bolts due to the limitation of its own geometric size, weight and the like. The high voltage wire harness is generally located at the front end of the power battery to facilitate the transmission of electrical energy to the front compartment of the vehicle, thereby effectively shortening the length of the high voltage wire harness. The power battery ground harness is also located at the front end for ease of installation. Therefore, the protection of the front end of the power battery is important in the running process of the vehicle, the protection content comprises the steps of preventing a road obstacle from directly impacting and puncturing the front end of the power battery, and a device for protecting the front end of the power battery of the electric automobile is not mature at present.

SUMMERY OF THE UTILITY MODEL

Arrange the electric vehicle in passenger cabin below to power battery and be receiving the risk of road surface barrier striking, puncture easily through abominable undulation road surface, rubble road surface and highway, rail crossing road surface, the utility model discloses an one or more aspects provide a vehicle power battery front end protection device design, its requirement that can satisfy intensity protective properties to solve the above-mentioned problem that exists among the prior art and the problem of other aspects.

According to the utility model discloses an aspect provides a vehicle power battery front end protection device, wherein protection device adopts upper and lower two-layer "U" shape punching press sheet metal component to connect in order to form a confined cavity through the welding form.

According to a further or additional embodiment of the present invention the vehicle power battery front end protection device, wherein the Y-direction dimension of the protection device covers the Y-direction dimension of the vehicle power battery.

According to a further or additional embodiment of the present invention the vehicle power battery front end protection device, wherein the Z-direction lowest point of the protection device is lower than the Z-direction lowest point of the vehicle power battery.

According to the utility model discloses an additional or additional embodiment vehicle power battery front end protection device, wherein protection device is located vehicle power battery front end, is used for preventing vehicle power battery receives injury such as striking, puncture.

According to the utility model discloses a vehicle power battery front end protection device of additional or additional embodiment, wherein the protection device is connected with this to satisfy structural strength and lightweight design through the welding form of carbon dioxide arc welding.

According to another or additional embodiment of the present invention the vehicle power battery front end protection device, wherein the protection device is connected with the vehicle body structure by a bolt.

According to the utility model discloses an additional or additional embodiment vehicle power battery front end protection device, wherein bolt quantity is four, wherein two bolt arrange in protection device both ends, two other bolt arrange in protection device's intermediate position.

According to the utility model discloses an additional or additional embodiment vehicle power battery front end protection device, wherein the welding of protection device intermediate position has two supports, two supports through arrange in intermediate position two bolts and body structure are connected.

In accordance with an additional or additional embodiment of the present invention, the vehicle power battery front end protection device, wherein the bolt is an M8 bolt, class 8.8.

According to another aspect of the present invention, a vehicle is disclosed, wherein the vehicle has a vehicle power battery front end protection device as described in any one of the above.

The power battery front end protection device has enough strength and rigidity, and has full-coverage protection on the power battery structural member in the transverse direction and the height direction, so that the direct impact of the front end of the power battery by a road obstacle is effectively avoided.

The utility model discloses a vehicle power battery front end protection device arranges the electric motor car of passenger cabin below through abominable undulation road surface to vehicle power battery, can effectively separate the direct striking power battery of road surface barrier, battery front end high pressure pencil and ground connection pencil when rubble road surface and highway, rail cross road surface to better protection power battery.

The above features of the present invention will become more apparent from the following description and the accompanying drawings.

Drawings

The above and other objects and advantages of the present invention will be more fully apparent from the following detailed description taken in conjunction with the accompanying drawings, in which like or similar elements are designated with like reference numerals.

Fig. 1 shows a schematic view of a vehicle power battery front end protection device according to the present invention.

Fig. 2 shows a top view of a vehicle power battery front end protection device according to the present invention.

Fig. 3 shows a front view of a vehicle power battery front end protection device according to the present invention.

Fig. 4 shows a fixed point bracket of a vehicle power battery front end protection device according to the present invention.

Fig. 5 shows upper and lower "U" shaped sheet metal part cross-sections of a vehicle power battery front end protection device according to the utility model discloses.

Fig. 6 shows a schematic diagram of the overall structure of the front end protection device of the vehicle power battery and its peripheral parts according to the present invention.

Fig. 7 shows a top view of the vehicle power battery front end protection device installation according to the present invention.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. The embodiments described above are intended to be illustrative in all respects, all of the present disclosure being full and complete, so that the scope of the present invention may be more fully and accurately understood.

Terms such as "comprising", "including" and "having" mean that, in addition to having components that are directly and explicitly stated in the description and claims, the technical solution of the invention does not exclude other components that are not directly or explicitly stated.

Terms such as "first" and "second" do not denote an order of the elements or components in time, space, size, etc., but rather are used to distinguish one element or component from another.

Fig. 1 shows a schematic view of a vehicle power battery front end protection device according to the present invention. As in figure 1, the utility model discloses protection device comprises upper and lower two "U" type punching press sheet metal component, and both weld the form welded connection through carbon dioxide protection to form a confined cavity. The protection device has two fixing points at both ends, namely a left fixing point 106 and a right fixing point 101, which are connected with the vehicle body structural member through two M8 bolts. The intermediate position of the protection device also has two fixing points, respectively an inner fixing point 102 and an inner fixing point 104, to which two brackets, a bracket 103 and a bracket 105, are welded, which are connected to the vehicle body structural member by means of M8 bolts. The protection device is connected with the automobile body through four bolts, so that the effectiveness of connection with the automobile body is guaranteed, and the protection device is prevented from being separated from the automobile body after being impacted.

For guaranteeing the utility model discloses protection device's structural strength, two upper and lower "U" shape sheet metal components adopt high strength steel CR420, and panel beating thickness is 1.5 mm. The middle and the connecting bracket of the fixed point of the vehicle body also adopt a high-strength steel plate CR420, and the thickness of the metal plate is 2.0 mm.

Fig. 2 shows a top view of a vehicle power battery front end protection device according to the present invention. The specific structural dimensions within the protective structure may be as follows:

item	Size (mm)
		Length of protective device	1158
Width of the protection device	100
		Inner measuring fixed point distance edge	330
Distance edge between two fixed points at two ends	30
		Amount of backward movement	55
Back shift distance edge	160

Fig. 3 shows a front view of a vehicle power battery front end protection device according to the present invention. Two fixed

point brackets

301 and 302 are welded on the front end protection device of the vehicle power battery.

Fig. 4 shows a fixed point bracket of a vehicle power battery front end protection device according to the present invention. As shown in FIG. 4, the fixing point bracket is designed in a Z shape by adopting an inner measuring fixing point and a vehicle body connecting bracket, the bracket is 50mm wide and 28mm high, and is provided with a longitudinal reinforcing rib 401, and the depth of the reinforcing rib is preferably 3 mm.

Fig. 5 shows the upper and lower "U" shaped sheet metal section of the vehicle power battery front end protection device according to the utility model, which is composed of an upper U-shaped sheet metal part 501 and a lower U-shaped sheet metal part 502. The specific structural dimensions within the protective structure may be as follows:

item	Size (mm)
		Height of the protection device	77
Height of backward movement	35
		Fixed point bracket width	50
Fixed point bracket height	28

As the embodiment that fig. 3, fig. 4 and fig. 5 show, the utility model discloses a vehicle power battery front end protection device's upper and lower two "U" shape sheet metal component is 1158mm long, and is 384mm wide, wherein goes up the long 41mm of "U" shape sheet metal component cross-section, and high 16mm to lower "U" shape sheet metal component cross-section is long 44mm, high 21 mm. The distance between the bolt fixing points at the two ends of the protection device and the edge is 30mm, and the distance between the inner measuring fixing point and the edge is 330 mm.

By combining the components as described above, the protector is 1158mm in overall length, 100mm in width and 77mm in height and is a tubular structure. The protection device is connected by two "U" type punching press sheet metal component docks about, through the welding form of carbon dioxide arc welding. The section of the upper U-shaped sheet metal part is 41mm long and 16mm high, and the section of the lower U-shaped sheet metal part is 44mm long and 21mm high. The structure has a height difference of 35mm and a back shift of 55mm from the area between 160mm and 330mm from the edge, and the feature is symmetrical at two ends. The Z-shaped support is arranged at a position 330mm away from the edge, the height of the support is 28mm, the width of the support is 50mm, an X-direction reinforcing rib is arranged, the depth of the support is 3mm, and the support and the cross beam are connected in a carbon dioxide arc welding mode.

Fig. 6 shows a schematic diagram of the overall structure of the front end protection device of the vehicle power battery and its peripheral parts according to the present invention. As shown in fig. 6, the overall structure includes a vehicle power battery front end protection device 602, a body-in-white (BIW) 601, and a power battery 603. The power battery front end protection device 602 is mounted at the root of the side member of the body-in-white 601, and is connected with the structural member of the body-in-white 601 through four M8 bolts (class 8.8). The vehicle power battery front end protection device 602 is located at the front end of the power battery, the distance between the vehicle power battery front end protection device and a power battery front end structural member is 80mm, and the height Z direction is 13mm lower than the lowest point of the power battery.

Fig. 7 shows a top view of the vehicle power battery front end protection device installation according to the present invention. As shown in fig. 7, the protection device 702 may have a length that covers the entire Y-direction structure of the power battery 701.

As the utility model discloses a preferred embodiment, when passing through abominable undulation road surface, rubble road surface and highway, rail crossing road surface for guaranteeing the vehicle, the power battery front end does not receive direct striking, under the current prerequisite of arranging the space, the utility model discloses can adopt horizontal beam structure design. As shown in FIG. 1, the protection device can reach 1158mm in length and cover the whole Y-direction structure of the power battery. The Z-direction height of the protection device can reach 77mm, and the protection device is lower than the lowest point of the power battery in the Z direction and has a height difference of 13mm, so that all Z-direction structures of the power battery are protected.

As the utility model discloses a preferred embodiment, high strength steel CR420 is all chooseed for use to "U" shape sheet metal component material about the crossbeam structure, and CR420 is all chooseed for use to its optional 1.5mm of thickness, two "Z" style of calligraphy support sheet metal component materials, and its optional 2.0mm of thickness. The protection device and the vehicle body are connected through bolts and nuts, M8 bolts are adopted, and the grade is 8.8. The optimization can ensure the structural strength and simultaneously give consideration to the optimal cost.

When the vehicle equipped with by the utility model provides a power battery front end protection device passes through abominable undulation road surface, rubble road surface and highway, the crossing road surface of rail, power battery front end structure does not receive the striking of barrier. The front end protection device of the power battery has the trace of local impact of obstacles, but has no obvious structural deformation. Can derive from the way test result, the utility model discloses a vehicle power battery front end protection device can effectively separate the direct striking power battery of road surface barrier, battery front end high pressure pencil and ground connection pencil to better protection power battery.

Simultaneously the utility model also discloses a vehicle, wherein the vehicle is including as any embodiment in above embodiment vehicle power battery front end protection device.

The above examples mainly illustrate the power battery front end protection device and the vehicle equipped with the device provided according to the present invention. Although only a few embodiments of the present invention have been described, those skilled in the art will appreciate that the present invention may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made thereto without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. The front end protection device of the vehicle power battery is characterized in that an upper layer of U-shaped stamping sheet metal parts and a lower layer of U-shaped stamping sheet metal parts are connected in a welding mode to form a closed cavity, the Y-direction size of the protection device covers the Y-direction size of the vehicle power battery, and the Z-direction lowest point of the protection device is lower than the Z-direction lowest point of the vehicle power battery.

2. The vehicle power battery front end protection device according to claim 1, wherein the protection device is located at a front end of a vehicle power battery and is used for preventing the vehicle power battery from being damaged by impact and puncture.

3. The vehicle power cell front end protection device according to claim 2, wherein the protection device is connected by welding form of carbon dioxide arc welding to satisfy structural strength and lightweight design.

4. The vehicle power cell front end protection device according to claim 3, wherein the protection device is connected to a vehicle body structural member by a bolt.

5. The vehicle power battery front end protection device according to claim 4, wherein the number of the bolts is four, two of the bolts are disposed at both ends of the protection device, and the other two bolts are disposed at a middle position of the protection device.

6. The vehicle power battery front end protection device according to claim 5, characterized in that two brackets are welded at a middle position of the protection device, and the two brackets are connected with a vehicle body structure through the two bolts arranged at the middle position.

7. The vehicle power cell front end protection device according to claim 6, wherein the bolt is an M8 bolt, and is rated 8.8.

8. A vehicle characterized by having a vehicle power battery front end protection device according to any one of claims 1 to 7.