CN112829569A

CN112829569A - Battery package tray bottom guard plate and vehicle

Info

Publication number: CN112829569A
Application number: CN201911158319.6A
Authority: CN
Inventors: 尤悦丘; 陈旭; 曾而平; 林学业
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-05-25

Abstract

The invention is suitable for the field of new energy automobile battery protection, and discloses a battery pack tray bottom protection plate which comprises a protection plate body, wherein the protection plate body is arranged at the bottom of a battery pack tray, the protection plate body comprises at least two protection plate pieces which are sequentially overlapped along a first direction, and each protection plate piece is fixedly connected with the battery pack tray through a bonding structure or/and a buckle structure. The invention also provides a vehicle which comprises a battery pack tray, wherein the bottom of the battery pack tray is provided with the bottom protection plate of the battery pack tray. The bottom protection plate of the battery pack tray and the vehicle can effectively protect the battery pack of the vehicle and ensure the driving safety.

Description

Battery package tray bottom guard plate and vehicle

Technical Field

The invention belongs to the field of new energy automobile battery protection, and particularly relates to a battery pack tray bottom protection plate and a vehicle.

Background

The battery pack of new energy vehicle arranges the frame in through the battery tray on, its battery pack bottom exposes in vehicle bottom dish below completely, and in order to reduce automobile body weight, the battery tray generally is made by aluminium material, aluminium battery tray hardness is lower, stone or other protrusions that the new energy vehicle went to bring hit the battery pack bottom, the risk of damage appears easily in the aluminium battery tray, can't play fine protection to the battery pack, thereby lead to the function failure of battery pack, danger such as explosion appear firing even.

Disclosure of Invention

The invention aims to solve at least one of the technical problems and provides a bottom protection plate of a battery pack tray and a vehicle, which can effectively protect a battery pack of the vehicle and ensure the driving safety.

The technical scheme of the invention is as follows: the utility model provides a battery package tray bottom guard plate, includes the guard plate body, the bottom of battery package tray is located to the guard plate body, the guard plate body includes two piece at least along first direction overlap joint's guard plate spare in proper order, each the guard plate spare with it is fixed to connect through adhesive bonding structure or/and buckle structure between the battery package tray.

Optionally, the number of the protection plate bodies is at least two, and the protection plate bodies are sequentially arranged along the second direction.

Optionally, the guard plate member is provided with a plurality of convex strip structures arranged at intervals along the first direction, an air guide channel is formed between two adjacent convex strip structures on the guard plate member, and the air guide channels are aligned along each of two adjacent guard plate members along the first direction.

Optionally, the protruding strip structure is provided with a drainage hole.

Optionally, one or both ends of the protruding strip structure are tapered or arc-shaped.

Optionally, the bonding structure is foam adhesive, and the foam adhesive is disposed on the back of the air guide channel.

Optionally, the buckle structure includes a hook and a slot, and the slot and the hook are respectively disposed on the protruding strip structure and the battery pack tray.

Optionally, the shield member is a metal member.

Optionally, fender spare one end is equipped with overlap joint portion, the other end of fender spare is equipped with the overlap joint portion, overlap joint portion overlap on the overlap joint portion of adjacent fender spare.

Optionally, an adhesive is disposed between the overlapping portion and the laminating portion.

The invention further provides a vehicle which comprises the battery pack tray, and the bottom of the battery pack tray is provided with the bottom protection plate of the battery pack tray.

According to the bottom protection plate for the battery pack tray and the vehicle, the protection plate is arranged on the bottom surface of the vehicle battery pack tray to protect the vehicle battery pack, so that stones or other foreign matters brought up by an automobile in the driving process are prevented from impacting the battery pack, and the driving safety is guaranteed. The protection plate body is formed by splicing and combining at least two protection plate pieces, compared with the protection plate with an integral structure in the prior art, the protection plate adopting the split splicing has the advantages of simplicity and convenience in assembly, simple structure, low processing difficulty and convenience in storage and transportation, when the protection plate is damaged, only the damaged protection plate pieces need to be replaced, and the later maintenance cost is low; further fix the fender spare through setting up adhesive structure or/and buckle structure, prevent that the bulge phenomenon from appearing in the fender spare, produce the abnormal sound when having avoided the striking, improve and experience by bus.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bottom protection plate of a battery pack tray provided in embodiment 1 of the present invention;

fig. 2 is an exploded schematic view of a bottom protection plate of a battery pack tray provided in embodiment 1 of the present invention;

fig. 3 is a top view of a bottom protection plate of a battery pack tray provided in embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a bottom protection plate of a battery pack tray provided in embodiment 2 of the present invention;

fig. 5 is an exploded schematic view of a bottom protection plate of a battery pack tray provided in embodiment 2 of the present invention;

fig. 6 is a top view of a bottom protection plate of a battery pack tray according to embodiment 2 of the present invention;

FIG. 7 is a sectional view taken along the line A-A in FIG. 6;

FIG. 8 is an enlarged schematic view at B of FIG. 7;

FIG. 9 is an enlarged schematic view at C of FIG. 8;

FIG. 10 is an enlarged schematic view at D of FIG. 8;

FIG. 11 is a simulation analysis diagram of the impact of the simulated foreign objects on the raised line structures of the protection plate in the embodiment 1 of the present invention;

fig. 12 is a simulation analysis diagram of the impact of a simulated foreign object on the position between two adjacent raised line structures of the protection plate in the embodiment 1 of the invention;

FIG. 13 is a simulation analysis diagram of the impact of a simulated foreign object on the lap joint of two adjacent fender components on the fender in example 1 of the present invention;

FIG. 14 is a simulation analysis chart for simulating vertical direction random vibration in embodiment 1 of the present invention;

FIG. 15 is a simulation analysis diagram of the impact of the simulated foreign objects on the rib structures of the protection plate in the embodiment 2 of the present invention;

fig. 16 is a simulation analysis diagram of the impact of a simulated foreign object on the position between two adjacent raised line structures of the protection board in the embodiment 2 of the invention;

FIG. 17 is a simulation analysis diagram of the impact of a simulated foreign object on the lap joint of two adjacent fender components on the fender in example 2 of the present invention;

FIG. 18 is a simulation analysis diagram of the impact of a simulated foreign object on the snap connection on the protection plate in embodiment 2 of the present invention;

fig. 19 is a simulation analysis diagram for simulating vertical vibration randomness in embodiment 2 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.

In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments in the present invention will not be described in detail.

For ease of understanding, the present embodiment defines: the first direction may refer to a length direction of the battery pack tray 2, i.e., a length direction of the vehicle, the second direction may refer to a width direction of the battery pack tray 2, i.e., a width direction of the vehicle, and the vertical direction refers to a height direction of the vehicle.

As shown in fig. 1 to 6, the bottom protection plate of the battery pack tray provided by the embodiment of the invention is used for protecting a battery pack of a pure electric vehicle or a hybrid electric vehicle, and comprises a protection plate body 1, wherein the protection plate body 1 is arranged at the bottom of the battery pack tray 2, the protection plate body 1 comprises at least two protection plate pieces 3, each protection plate piece 3 is sequentially overlapped along a first direction, the protection plate pieces 3 can be designed into standard pieces, and the protection plates with different sizes can be spliced out by controlling the number of the protection plate pieces 3 according to needs in practical application to adapt to different vehicle types, so that a set of mold does not need to be prepared correspondingly for each vehicle type, and the production cost is effectively reduced; the protection plate is designed into a splicing structure, compared with the protection plate with an integral structure, the size of a forming die can be designed to be smaller, the processing difficulty and the die cost are reduced, and the protection plate 3 with a relatively smaller size is more beneficial to storage and transportation; the guard plate is designed into a splicing structure, and when the guard plate is damaged, only the damaged guard plate member 3 needs to be replaced, so that the later maintenance cost is reduced.

Can be provided with adhesive structure 5 between each fender piece 3 and the battery package tray 2, through adopting the mode of bonding with the guard plate body 1 bonding fixed to battery package tray 2 bottom, or, as shown in fig. 4 to fig. 6, can be provided with buckle structure 4 between each fender piece 3 and the battery package tray 2, through adopting the mode of buckle connection with guard plate body 1 bonding fixed to battery package tray 2 bottom, or, can be provided with adhesive structure 5 and buckle structure 4 simultaneously between each fender piece 3 and the battery package tray 2, and thus, the stability of guard plate installation can be effectually improved, make guard plate body 1 laminate in battery package tray 2 bottom, and the utility model has the advantages of simple installation, reliable and simple installation.

In practical application, each of the plate protecting members 3 may be connected and fixed with the battery pack tray by other connection methods, such as screw connection, welding, and the like.

Specifically, the boundary of the sheathing body 1 is fixed to the bottom of the battery pack tray by means of locking members. Retaining member 7 can be rivet or bolt, and the bottom of battery package tray 2 is fixed with the border locking of guard plate body 1 to rivet or bolt, and other regional (middle zone) of guard plate body 1 then accessible adhesive structure 5 or/and buckle structure 4 fix, prevent that bulge phenomenon from appearing in guard plate member 3, appear abnormal sound when avoiding guard plate member 3 to suffer the striking, improve and experience by bus.

Optionally, the number of fender body 1 can be two at least, and each fender body 1 arranges in proper order along the second direction, like this, can be further with the size design of fender piece 3 littleer.

In practical application, when protection plate body 1 is two at least, in each protection plate body 1 that arranges in proper order along the second direction, two adjacent protection plate body 1's boundary can adopt the lapped mode to connect, perhaps, two adjacent protection plate body 1's boundary can also adopt butt joint, and two adjacent protection plate body 1's boundary does not have the part of overlapping promptly.

In the present embodiment, a fender structure including only one fender body 1 will be described.

Alternatively, as shown in fig. 1 to 6, the plate member 3 is provided with a plurality of protruding strip structures 31, the structural strength of the plate member 3 is enhanced by providing the protruding strip structures 31, so as to further increase the impact resistance of the protection plate, each protruding strip structure 31 is arranged at intervals along the second direction and can be parallel to the first direction, the distribution positions of the protruding strip structures 31 on each plate member 3 are the same, and an air guiding channel 32 is formed between two adjacent protruding strip structures 31 on each plate member 3, the air guiding channels 32 at corresponding positions on two adjacent plate members 3 are aligned with each other after being overlapped along the first direction to form a continuous channel, that is, in two adjacent plate members 3, the air guiding channels 32 and the protruding strip structures 31 along the first direction are not staggered, so that the air flow passing through the surface of the protection plate can smoothly pass through the air guiding channels 32 during the driving of the automobile, will not be blocked by the convex strip structure 31, thereby reducing the wind resistance coefficient of the running automobile.

Specifically, along the first direction, the air guide channels 32 aligned on two adjacent plate protection members 3 may be disconnected, or the air guide channels 32 aligned on two adjacent plate protection members 3 may also be in butt joint.

Alternatively, as shown in fig. 1 to 6, the protruding strip structure 31 is provided with a drainage hole 33, and the drainage hole 33 is used for draining the deposition water between the protection plate and the battery pack tray 2, so as to prevent the battery pack from contacting with the deposition water to accelerate corrosion of the battery pack, thereby prolonging the service life of the battery pack.

Specifically, the panel member 3 may be a metal stamping, and each protruding strip structure 31 may be formed on the panel member 3 by an integral stamping method.

Specifically, when the protection plate is installed on the automobile, the surface of the raised strip structure 31 protruding from the protection plate 3 faces away from the battery pack tray 2, that is, the raised direction of the raised strip structure 31 faces the road surface, a cavity 33 is formed on one side of the raised strip structure 31 facing the battery pack tray 2, the cavity 33 reserves a certain deformation space for the forced deformation of the protection plate body 1, and when the protection plate is impacted by a foreign object, the foreign object is not directly impacted to the bottom of the battery pack tray 2 due to the buffering of the cavity 33.

The raised surface of the rib structure 31 may be a flat surface, and at this time, in order to drain the deposition water between the protection plate and the battery pack support plate, more than one drainage hole 33 is formed on the rib structure 31, or the raised surface of the rib structure 31 may be a tapered surface having a certain taper angle of 175 ° to 178 °, and at this time, only one drainage hole 33 may be formed on the rib structure 31, and the drainage hole 33 is located at the apex of the tapered surface.

In this embodiment, the convex surface of the convex strip structure 31 is a plane, and the convex strip structure 31 is provided with two drainage holes 33 respectively located at two ends of the convex strip structure 31.

Specifically, in the plurality of rib structures 31 on each shield member 3, the distance between two adjacent rib structures 31 is the same. In practical application, the distance between two adjacent convex strip structures 31 can be different, and only the arrangement positions of the corresponding convex strip structures 31 on each guard plate member 3 need to be ensured to be the same.

Alternatively, as shown in fig. 1 to 6, one end or both ends of the protruding strip structure 31 may be tapered or arc-shaped, so as to separately guide the airflow flowing through the surface of the guard plate into the air guiding channel 32, thereby further reducing the wind resistance coefficient of the vehicle.

Optionally, bonding structure 5 can be bubble celloidin, adopt bubble celloidin to bond the fender spare 3 fixed to the bottom of battery package tray 2 on, the installation is simple, and when the foreign matter striking guard plate, the bubble celloidin can play the effect of alleviating the impact, reduce the impact to battery package/battery package tray 2, also can avoid fender spare 3 and battery package tray 2 collision abnormal sound to appear, the bubble celloidin is located the back of wind-guiding passageway 32, bubble celloidin will avoid the cavity 33 that sand grip structure 31 formed promptly, guarantee the bonding effect of fender spare 3 and battery package tray 2 bottom. When installing the bottom of battery package tray 2 with the guard plate, each guard plate piece 3 can be earlier through bubble celloidin and the bottom bonding of battery package tray 2, then the border locking of rethread rivet with the guard plate is fixed to the bottom of battery package tray 2.

Alternatively, as shown in fig. 9, the fastening structure 4 includes a hook 41 and a slot 42, the slot 42 is disposed on the protruding strip structure 31, and the hook 41 is disposed on the battery pack tray 2, or the hook 41 is disposed on the protruding strip structure 31 and the slot 42 is disposed on the battery pack tray 2. When the battery pack protection plate is installed, external force needs to be applied to enable the clamping hooks 41 and the clamping grooves 42 to be fastened and fixed, and then the boundary of the protection plate body 1 is locked and fixed to the bottom of the battery pack tray 2 through the rivets. And the mode of buckle connection is adopted, so that the assembly is convenient.

Specifically, as shown in fig. 5 and 9, the raised surface of the protruding strip structure 31 has a counter bore 312, the locking slot 42 can be disposed on the bottom surface of the counter bore 312, when the locking hook 41 is locked with the locking slot 42, the locking hook 41 is located in the counter bore 312, and the locking hook 41 is flush with or lower than the raised surface.

Optionally, the fender member 3 may be a steel plate, which is favorable for improving the anti-collision and friction-resistant performance of the fender, and the steel plate has high strength and relatively light weight, thereby effectively reducing the weight of the vehicle body. In practical application, the type of steel can be selected according to specific requirements, and the guard plate is ensured to have enough impact resistance to meet different road conditions. The shield member 3 may be an aluminum alloy plate or the like.

Alternatively, as shown in fig. 10, one end of the shield member 3 is provided with a lap 62, the other end of the shield member 3 is provided with a lap 61, the lap 61 can be laid over the lap 62 of the adjacent shield member 3, wherein, the overlapping portion 61 is a bending structure formed at one end of the shield member 3 by bending, the overlapping portion 62 is substantially a portion of the shield member 3 overlapped by the overlapping portion 61 of the adjacent shield member 3, the bending structure is formed by punching and bending by a punch, the bending structure includes a first bending portion 611 and a second bending portion 612, one end of the first bending portion 611 is connected with the shield member 3, the other end is connected with one end of the second bending portion 612, the second bending portion 612 is parallel to the shield member 3, an included angle between the first bending portion 611 and the shield member 3, and an included angle between the first bending portion 611 and the second bending portion 612 can both be greater than 90 degrees or equal to 90 degrees, and the height difference between the shield member 3 and the second bent portion 612 is equal to the thickness of the shield member 3.

Specifically, when the same fender body 1 includes at least three fender pieces 3, two fender pieces 3 located at both ends of the fender are the head-end fender piece and the tail-end fender piece, and the fender piece 3 located between the head-end fender piece and the tail-end fender piece is the middle fender piece. Wherein, the head end shield spare is provided with the overlap portion 61 in the one end that is close to middle shield spare, and the other end is provided with chamfer structure 34 or fillet structure (shown in fig. 1-6), and the tail end shield spare has overlap portion 62 in the one end that is close to middle shield spare, and the other end is provided with chamfer structure 34 or fillet structure, and the one end of middle shield spare is provided with overlap portion 62, and the other end is provided with overlap portion 61. The chamfer structures 34 or the fillet structural design on the head end shield part and the tail end shield part can prevent workers from being scratched by four corners of the shield plate in the subsequent operation process.

Specifically, when the shield member 3 constituting the fender body 1 is two, one end of the head-end shield member near the tail-end shield member is provided with a superposed portion 61, and this superposed portion 61 is superposed on a superposed portion 62 of the tail-end shield member.

Specifically, when the number of the shield members 3 constituting the shield plate body 1 is three, the number of the intermediate shield members is one, the superposed portion 61 of the head-end shield member is superposed on the superposed portion 62 of the intermediate shield member, and the superposed portion 61 of the intermediate shield member is superposed on the superposed portion 62 of the tail-end shield member.

Specifically, when the shield member 3 constituting the shield plate body 1 is four, the number of the intermediate shield members is two, the superposed portion 61 of the head-end shield member is superposed on the superposed portion 62 of the first intermediate shield member, the superposed portion 61 of the first intermediate shield member is superposed on the superposed portion 62 of the second intermediate shield member, and the superposed portion 61 of the second intermediate shield member is superposed on the superposed portion 62 of the tail-end shield member.

Specifically, the number of the sheathing members 3 constituting the sheathing body may also be five, six, seven, or the like.

Optionally, an adhesive 60 is disposed between the overlapping portion 62 and the laminated portion 61 to improve the stability of the connection at the overlapping portion of two adjacent panel protection members 3.

Specifically, the bonding member 60 may be foam rubber, and the foam rubber may prevent the overlapping portion 62 from directly contacting the laminating portion 61, thereby solving the problem that abnormal noise may be generated due to friction between the overlapping portion 62 and the laminating portion 61 during the driving process of the vehicle.

Example 1

As shown in fig. 1 to 3, the boundary of the protection plate body 1 is fixed to the bottom of the battery pack tray 2 by rivet locking, other regions of the protection plate body 1 are fixed only by foam cotton, and the protection plate body 1 is firmly adhered to the bottom of the battery pack tray 2 by adhesion. As shown in fig. 3, the foam adhesive is a continuous foam adhesive tape disposed along the first direction on the back surface of the air guide channel 32.

Example 2

As shown in fig. 4 to 6, the boundary of the protection plate body 1 is fixed to the bottom of the battery pack tray 2 by rivet locking, and other regions of the protection plate body 1 are connected with the battery pack tray 2 only by the snap structure 4, so that the protection plate body 1 is firmly adhered to the bottom of the battery pack tray 2 by the snap structure 4. The raised line structures 31 on the two side boundaries close to the length direction of the battery pack tray on the protection plate body 1 are not provided with the buckling structures 4 due to insufficient space.

Fig. 11 to 14 are simulation analysis diagrams of crash resistance analysis of the guard plate fixed in the embodiment 1 by the structural simulation, and the specific conclusions are as follows:

fig. 11 is a simulation analysis diagram for simulating the impact of foreign matters on the convex strip structure 31 of the protective plate member 3, and it can be seen from the diagram that when the maximum reaction value is 50kN, the plastic strain of the protective plate is 8.3%, and the plastic strain of the bottom of the battery pack tray 2 is 6.2%;

when the maximum reaction value was 107kN, the protection plate and the bottom of the pack tray 2 were simultaneously ruptured.

From fig. 12, which is a simulation analysis diagram for simulating foreign matters to collide with the position between two adjacent raised line structures 31 on the guard plate member 3, it can be seen that, when the maximum reaction force value is 50kN, the plastic strain of the guard plate is 15.1%, and the plastic strain of the bottom of the battery pack tray 2 is 11.3%;

when the maximum reaction value is 63.5kN, the bottom of the battery pack tray 2 is broken;

when the maximum reaction value was 76.8kN, the guard plate broke.

Fig. 13 is a simulation analysis diagram for simulating the impact of foreign matters on the lap joint of two adjacent protection plate members 3, and it can be seen from the diagram that the bottom of the battery pack tray 2 is broken when the maximum reaction force value is 47.1 kN;

when the maximum reaction value was 84.9kN, the guard plate broke.

Fig. 14 is a simulation analysis diagram for analyzing the stability of the connection of the protection plate by simulating the random vibration in the vertical direction in a manner of fixing the protection plate by using foam rubber and rivets, and the specific conditions are as follows: the maximum stress of the foam adhesive is 0.008MPa and does not exceed the 1/3 ultimate strength 0.1285MPa of the foam adhesive, and the scheme of adhesive and rivet fixation meets the connection and fixation conditions.

Fig. 15 to 19 are simulation analysis diagrams of crash resistance analysis of the guard plate fixed in the embodiment 2 by the structural simulation, and the specific conclusions are as follows:

fig. 15 is a simulation analysis diagram for simulating the impact of foreign matters on the convex strip structure 31 of the protective plate member 3, and it can be seen from the diagram that when the maximum reaction value is 50kN, the plastic strain of the protective plate is 8.3%, and the plastic strain of the bottom of the battery pack tray 2 is 6.2%;

From fig. 16, which is a simulation analysis diagram for simulating the impact of foreign matters on the position between two adjacent raised line structures 31 on the guard plate member 3, it can be seen that when the maximum reaction force value is 50kN, the plastic strain of the guard plate is 15.1%, and the plastic strain of the bottom of the battery pack tray 2 is 11.6%;

when the maximum reaction value was 76.8kN, the guard plate broke.

Fig. 17 is a simulation analysis diagram for simulating the impact of foreign matters on the lap joint of two adjacent protection plate members 3, and it can be seen from the diagram that the bottom of the battery pack tray 2 is broken when the maximum reaction force value is 47.1 kN;

when the maximum reaction value was 84.9kN, the guard plate broke.

Fig. 18 is a simulation analysis diagram for simulating the impact of foreign matters on the buckle connection part, and it can be seen from the diagram that when the maximum reaction value is 50kN, the plastic strain of the protection plate is 5.8%, the plastic strain of the buckle part is 6.9%, and the plastic strain of the bottom of the battery pack tray 2 is 3.4%;

when the maximum counter force value is 74.2kN, the buckling piece is broken;

when the maximum reaction value is 86.2kN, the protection plate is broken;

when the maximum counter force value was 1059kN, the bottom of the pack tray 2 was ruptured.

Fig. 19 is a simulation analysis diagram for simulating the stability simulation of the connection of the protection plate by the vertical direction random vibration in the manner of fastening and rivet fixing for the protection plate, and the specific conditions are as follows: the maximum stress of the buckle piece is 8.494MPa, the yield strength of the buckle material is not exceeded by 2/3 yield strength, and the buckle and rivet fixing scheme meets the connection and fixation condition.

The invention further provides a vehicle which comprises the battery pack tray 2, and the bottom of the battery pack tray 2 is provided with the battery pack tray bottom protection plate. Can protect vehicle battery package, separate through bearing and safeguard function with battery package tray 2, in the circumstances that has the guard plate protection, battery package tray 2 bottom can do as far as in the scope of bearing battery package weight and reduce weight.

According to the protection plate at the bottom of the battery pack tray and the vehicle provided by the embodiment of the invention, the protection plate is arranged on the bottom surface of the vehicle battery pack tray 2 to protect a vehicle battery pack, so that stones or other protrusions brought up by an automobile in the driving process are prevented from impacting the battery pack, and the driving safety is ensured. The protection plate body 1 is formed by splicing and combining at least two protection plate pieces 3, compared with the protection plate with an integral structure in the prior art, the protection plate adopting the split splicing has the advantages of simplicity and convenience in assembly, simple structure, low processing difficulty and convenience in storage and transportation, the cost of a mold for producing a single protection plate piece 3 is low, only the damaged protection plate piece needs to be replaced when the protection plate is damaged, and the later maintenance cost is low; the strength of the protection plate can be enhanced by arranging the convex strip structures 31, the foreign matter impact resistance is improved, meanwhile, an air guide channel 32 is formed between two adjacent convex strip structures 31 on the protection plate member 3, and air flow flowing through the surface of the protection plate is guided to flow through the air guide channel 32, so that the wind resistance coefficient of automobile resistance is reduced; further fix guard plate body 1 through setting up adhesive structure 5 or buckle structure 4, prevent that the swell phenomenon from appearing in guard plate spare 3, produce the abnormal sound when having avoided the striking, improve and experience by bus, and when the foreign matter struck the guard plate on, the foam plastic can play and alleviate the impact effect, reduces the impact force that the battery package received.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a battery package tray bottom guard plate, includes the guard plate body, the bottom of battery package tray is located to the guard plate body, its characterized in that, the guard plate body includes two piece at least along first direction overlap joint's guard plate spare in proper order, each the guard plate spare with it is fixed to connect through adhesive bonding structure or/and buckle structure between the battery package tray.

2. The bottom plate of claim 1, wherein the number of the plate bodies is at least two, and the plate bodies are arranged in sequence along the second direction.

3. The bottom guard plate of claim 1, wherein the guard plate member has a plurality of rib structures spaced along the first direction, and a wind guide channel is formed between two adjacent rib structures on the guard plate member, and the wind guide channels on two adjacent guard plate members along the first direction are aligned.

4. The bottom shield plate for a battery pack tray of claim 3, wherein the rib structure is provided with drainage holes.

5. The bottom protective plate for a battery pack tray of claim 3, wherein one or both ends of the rib structure are tapered or curved.

6. The bottom protection plate for the tray of the battery pack as claimed in any one of claims 3 to 5, wherein the adhesive structure is foam rubber, and the foam rubber is disposed on the back surface of the air guide channel.

7. The bottom shield plate of any one of claims 3-5, wherein the latching structure comprises a hook and a slot, and the slot and the hook are respectively disposed on the rib structure and the battery pack tray.

8. The bottom protective plate for a battery pack tray as claimed in any one of claims 1 to 5, wherein the protective plate member is a metal member.

9. The bottom shield of claim 8, wherein the shield member has a lap joint at one end and a lap joint at the other end, the lap joint overlapping the lap joint of an adjacent shield member.

10. The bottom shield plate for a battery pack tray of claim 9, wherein an adhesive member is disposed between the overlapping portion and the laminating portion.

11. A vehicle comprising a battery pack tray, wherein a bottom of the battery pack tray is provided with the battery pack tray bottom shield of any one of claims 1 to 10.