CN217158434U

CN217158434U - Battery tray, battery pack and vehicle

Info

Publication number: CN217158434U
Application number: CN202220563578.8U
Authority: CN
Inventors: 李建强; 唐江龙; 万龙; 何为; 廖正远
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-08-09
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses a battery tray, battery package and vehicle, battery tray includes: the tray bottom plate comprises a bottom plate body and an extension part, the bottom plate body defines a placing groove for placing the battery cell, and the extension part extends along the circumferential edge of the bottom plate body; the bottom plate body is arranged in the mounting space, the extending part is positioned outside the mounting space and arranged on the frame, and the extending part is provided with an avoiding through hole for a fastener to pass through; and the sealing structure is used for sealing the avoiding through hole. From this, through tray bottom plate, frame and seal structure cooperation, can promote battery tray leakproofness, can avoid liquid from dodging in the through-hole flows in the standing groove, prevent to cause the battery package short circuit to promote battery package safety in utilization, the frame is not sealed also can guarantee that liquid can not flow in the standing groove, has reduced the frame leakproofness requirement.

Description

Battery tray, battery pack and vehicle

Technical Field

The utility model belongs to the technical field of the battery and specifically relates to a battery tray, battery package and vehicle are related to.

Background

In the related art, the battery pack comprises a battery tray and a cover body, the cover body and the battery tray define a placing cavity, the battery tray comprises a frame and a flat tray bottom plate, the frame is welded with the tray bottom plate, the frame of the cover body and the frame of the battery tray are connected through bolts, the frame is provided with assembling holes, the bolts penetrate through the assembling holes to assemble the cover body and the battery tray together, liquid flows into the placing cavity from the assembling holes in the frame easily, the battery pack is prone to short circuit, and therefore the use safety of the battery pack is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a battery tray, this battery tray leakproofness is good, can avoid liquid to dodge on the tray bottom plate in the through-hole flows into the standing groove, also can prevent to make the battery package short circuit to promote battery package safety in utilization.

The utility model further provides a battery package.

The utility model discloses a vehicle is further proposed.

According to the utility model discloses a battery tray, include: the tray bottom plate comprises a bottom plate body and an extension part, the bottom plate body defines a placing groove for placing a battery cell, and the extension part extends along the circumferential edge of the bottom plate body; the bottom plate body is arranged in the mounting space, the extension part is positioned outside the mounting space and arranged on the frame, and the extension part is provided with an avoiding through hole for a fastener to pass through; and the sealing structure is used for sealing the avoiding through hole.

According to the utility model discloses a battery tray, through tray bottom plate, frame and seal structure cooperation, can promote battery tray leakproofness, can avoid liquid from dodging in the through-hole flows in the standing groove, prevent to cause the battery package short circuit, thereby promote battery package safety in utilization, and, tray bottom plate separates electric core and frame, even the frame is not sealed also can guarantee that liquid can not flow in the standing groove, reduced the frame leakproofness requirement, reduce the frame and make the degree of difficulty, promote frame production efficiency.

In some examples of the present invention, the sealing structure is disposed between the extending portion and the frame and corresponds to the avoiding through hole to seal the avoiding through hole; and/or the sealing structure is arranged in the avoiding through hole to seal the avoiding through hole.

In some examples of the present invention, the extension and the frame are sealingly connected by a sealing structure.

In some examples of the present invention, the sealing structure is a plurality of sealing structures, and the plurality of sealing structures are spaced apart in sequence.

In some examples of the present invention, the frame has a supporting portion extending toward the inside of the installation space, the supporting portion being used for supporting the bottom plate body, the supporting portion being provided between the bottom plate body and the sealing structure.

In some examples of the invention, the sealing structure is configured as a sealant.

In some examples of the invention, the frame comprises a side beam, a front end beam and a rear end beam, the side beam the front end beam and the rear end beam are connected to form the installation space, the side beam and/or the front end beam and/or the rear end beam have the support portion.

In some examples of the invention, the support portion is disposed near a lower end of the side sill.

In some examples of the present invention, the surface of the extension portion facing the frame is provided with a first rib, and the surface of the extension portion facing the frame and the first rib define a first glue containing area.

The utility model discloses an in some examples, the extension is equipped with a plurality ofly dodge the through-hole, a plurality ofly dodge the through-hole and be in the circumference direction of extension is spaced apart, a plurality ofly dodge at least adjacent two in the through-hole dodge be equipped with between the through-hole first protruding muscle.

In some examples of the present invention, the extension portion faces the surface of the frame and is provided with a facing direction convex boss in the frame direction, the extension portion faces the surface of the frame and the boss defines a first glue containing area, and the boss surrounds the avoiding through hole.

In some examples of the present invention, the bottom plate body faces the surface of the supporting portion and is provided with a second rib corresponding to the supporting portion, the bottom plate body faces the surface of the supporting portion and the second rib defines a second glue containing area, and the second rib ends the supporting portion.

In some examples of the present invention, the second rib is close to an end of the mounting space extending from the frame to the mounting space direction to the supporting portion.

In some examples of the invention, the tray floor is an integrally formed piece.

The battery pack comprises an electric core; the battery tray is the battery tray; the cover body and the tray bottom plate jointly define a placing cavity for placing the battery core, and the cover body is connected with the battery tray through the fastener.

According to the utility model discloses a vehicle, including foretell battery package.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a battery pack according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a battery pack according to an embodiment of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is an assembly schematic diagram of a battery tray and a battery cell according to an embodiment of the present invention;

fig. 5 is a schematic view of a battery tray according to an embodiment of the present invention;

fig. 6 is an exploded view of a battery tray according to an embodiment of the present invention;

fig. 7 is a schematic view of a tray floor of a battery tray according to an embodiment of the present invention;

fig. 8 is a schematic view of a frame of a battery tray according to an embodiment of the present invention;

fig. 9 is a schematic view of a side beam of a battery tray according to an embodiment of the present invention;

FIG. 10 is an enlarged view at B of FIG. 9;

fig. 11 is a partial enlarged view of a battery tray and cell assembly according to an embodiment of the present invention;

fig. 12 is another angular schematic view of a tray floor of a battery tray according to an embodiment of the present invention;

FIG. 13 is an enlarged view at C of FIG. 12;

fig. 14 is a cross-sectional view of a battery tray according to an embodiment of the present invention;

fig. 15 is an enlarged view at D in fig. 14.

Reference numerals:

a battery tray 100;

a tray bottom plate 10;

a bottom plate body 11; a placement groove 111; a compressed area 112; a bottom wall 113 of the placement tray; a second rib 114;

an extension 12; the first ribs 121; avoiding the through hole 122;

a seal structure 13;

a frame 20; an installation space 21; a support portion 22;

the side frame 23; the side sill body 231; a connecting plate 232; a top wall 233 of the cavity; a bottom wall 234 of the cavity; a sub-cavity 235; a first sidewall 236; a second side wall 237; a first connection portion 238; a second connecting portion 239; a boss structure 2391;

a front end beam 24; a rear-end beam 25; a support beam 26; an expansion beam 27; bolt holes 28;

a shackle structure 30; a cover 40; a placement chamber 41;

a battery pack 200; an electric core 201; a platen 202; a seal 203.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A battery tray 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 15, and the battery tray 100 is applied to a battery pack 200.

As shown in fig. 1 to 15, a battery tray 100 according to an embodiment of the present invention includes: seal 13, tray bottom panel 10, and rim 20. The tray bottom plate 10 includes a bottom plate body 11 and an extension portion 12, the bottom plate body 11 defines a placement groove 111 for placing the battery cell 201 or the battery module, the application takes the placement groove 111 to place the battery cell 201 as an example, the battery cell 201 may be adhered in the placement groove 111 by a structural adhesive, the bottom wall 113 of the placement groove has a pressed area 112 for supporting the battery cell 201, the pressed area 112 refers to an area where an orthographic projection of the bottom wall 113 of the placement groove coincides with an orthographic projection of the battery cell 201 in a height direction of the battery tray 100 when the battery cell 201 is installed in the placement groove 111, or it can also be understood that, when the battery cell 201 is installed in the placement groove 111, a contact area between the battery cell 201 and the bottom wall 113 of the placement groove includes an area where the battery cell 201 directly contacts or indirectly contacts the bottom wall 113 of the placement groove, for example: the cell 201 is in indirect contact with the bottom wall 113 of the placement groove when an adhesive or cooling structure is provided between the cell 201 and the bottom wall 113 of the placement groove, the cell 201 is in direct contact with the bottom wall 113 of the placement groove when no other object is provided between the cell 201 and the bottom wall 113 of the placement groove, or the weight of the cell 201 directly acts on the bottom wall 113 of the placement groove in the area of the compressed area 112. In the height direction of the battery tray 100, an orthographic projection of the bottom wall 113 of the placement groove is a projection of the bottom wall 113 of the placement groove in a plane perpendicular to the height direction of the battery tray 100. In the height direction of the battery tray 100, an orthographic projection of the battery cell 201 is a projection of the battery cell 201 in a plane perpendicular to the height direction of the battery tray 100.

When the battery cell 201 is installed in the battery tray 100, the battery cell 201 is located in the compression area 112 of the placement groove 111, the extension portion 12 is extended along the circumferential edge of the bottom plate body 11, further, the extension portion 12 is configured to be a ring-type structure, specifically, the extension portion 12 is configured to be a closed ring-type structure, and further, the extension portion 12 is provided with an escape through hole 122 for a fastening member (such as a bolt or a screw) to pass through.

The frame 20 defines a mounting space 21, the base plate body 11 is mounted in the mounting space 21, the extension portion 12 is located outside the mounting space 21 and is disposed on the frame 20, and further, the extension portion 12 is disposed on the frame 20 by a fastener. As shown in fig. 6, 8 and 11, in the present application, the battery tray 100 is described as an example of being placed in the vertical direction, after the bottom plate body 11 is installed in the installation space 21, the extension portion 12 is disposed outside the installation space 21, and in the vertical direction of the battery tray 100, the extension portion 12 is disposed corresponding to the frame 20, specifically, as shown in fig. 11, the extension portion 12 is disposed above the frame 20, and the extension portion 12 is disposed opposite to the frame 20, and in the vertical direction of the battery tray 100, the extension portion 12 may block the entire upper surface of the frame 20. The sealing structure 13 is used to seal the escape through hole 122.

The frame 20 is provided with a plurality of bolt holes 28, the bolt holes 28 are a plurality of, the bolt holes 28 and the avoidance through holes 122 are arranged in a one-to-one correspondence manner, a plurality of rivet nuts are pre-embedded in the frame 20 and arranged in a one-to-one correspondence manner with the bolt holes 28, and the rivet nuts penetrate the avoidance through holes 122 and the bolt holes 28. The battery pack 200 includes a cover 40, the cover 40 and the tray base plate 10 together define a placing cavity 41 for placing the battery cells 201, and the cover 40 is connected to the frame 20. Further, the cover body 40 is covered on the open end of the placement groove 111 to define the placement cavity 41, the extension portion 12 is sandwiched between the cover body 40 and the bezel 20, and the cover body 40, the tray bottom plate 10 and the bezel 20 are assembled together by connecting with the blind rivet nuts with bolts through the cover body 40, the escape through holes 122 of the extension portion 12 and the bolt holes 28 of the bezel 20. The bolt passes and dodges through-hole 122, through sealed structure 13 is sealed dodges through-hole 122, can promote battery tray 100 leakproofness, can avoid liquid to flow into standing groove 111 from dodging through-hole 122 in, prevent to cause the short circuit of battery package 200, thereby promote battery package 200 safety in utilization, and, tray bottom plate 10 separates electric core 201 and frame 20, even frame 20 is not sealed also can guarantee that liquid can not flow into standing groove 111 in, the requirement of frame 20 leakproofness has been reduced, reduce frame 20 and make the degree of difficulty, promote frame 20 production efficiency.

Further, the tray bottom plate 10 is configured as an integrally formed member, so that the sealing performance of the tray bottom plate 10 can be ensured, and the liquid can be prevented from flowing into the placing groove 111 from the tray bottom plate 10, so that the use safety of the battery pack 200 can be further improved.

In some embodiments of the present invention, the sealing structure 13 is disposed between the extending portion 12 and the frame 20, and the sealing structure 13 and the avoiding through hole 122 are correspondingly disposed, wherein the sealing structure 13 can cover the avoiding through hole 122 with the bolt contact passing through the cover 40, the extending portion 12 and the bolt hole 28 of the frame 20, so as to seal the avoiding through hole 122. And/or a sealing structure 13 is disposed within the bypass through hole 122 to seal the bypass through hole 122. When the sealing structure 13 is disposed between the extension portion 12 and the frame 20, after the fastener passes through the avoiding through hole 122, the sealing structure 13 can be tightly attached to the fastener, and the sealing structure 13 covers the avoiding through hole 122, so as to seal the avoiding through hole 122. When the sealing structure 13 is arranged in the avoiding through hole 122, the sealing structure 13 is clamped between the avoiding through hole 122 and the fastening piece, so that a gap between the avoiding through hole 122 and the fastening piece is sealed, and the effect of sealing the avoiding through hole 122 is achieved. Preferably, the sealing structure 13 is disposed between the extension 12 and the rim 20 and within the relief through hole 122.

In some embodiments of the present invention, as shown in fig. 11, the extension 12 and the frame 20 are connected by the sealing structure 13 in a sealing manner, further, the sealing structure 13 is configured as a sealing glue, and the sealing structure 13 can also be configured as a rubber member, but the present invention is not limited thereto, and the sealing structure 13 can also be configured as a sealing member playing the same role as the sealing glue. The sealing structure 13 can be clamped in the whole space between the tray bottom plate 10 and the frame 20, the sealing structure 13 can be clamped in a part of space between the extension portion 12 and the frame 20, the sealing structure 13 can be arranged around the bolt hole 28 and the avoiding through hole 122, further, the sealing structure 13 can extend into the bolt hole 28 and the avoiding through hole 122, so that the sealing connection between the extension portion 12 and the frame 20 can be realized, and liquid can be effectively prevented from flowing into the placing cavity 41 from the bolt hole 28 on the frame 20.

Further, the sealing structures 13 are multiple, and the multiple sealing structures 13 are sequentially arranged at intervals, or it can be understood that the multiple sealing structures 13 are sequentially arranged at intervals between the tray bottom plate 10 and the frame 20, and the multiple sealing structures 13 are simultaneously arranged between the tray bottom plate 10 and the frame 20, so that the sealing performance of the battery tray 100 can be further improved, liquid can be further prevented from flowing into the placing cavity 41 from the bolt holes 28 on the frame 20, and the short circuit of the battery pack 200 can be further prevented, thereby further improving the use safety of the battery pack 200.

In some embodiments of the present invention, as shown in fig. 11 and 15, the frame 20 has a supporting portion 22 extending toward the inside of the installation space 21, the supporting portion 22 is used for supporting the bottom plate body 11, further, the supporting portion 22 is used for supporting the pressed region 112, and a sealing structure 13 is provided between the supporting portion 22 and the bottom plate body 11, so that the gap between the supporting portion 22 and the bottom plate body 11 can be sealed, and liquid can be prevented from entering between the tray bottom plate 10 and the frame 20 from the gap between the supporting portion 22 and the bottom plate body 11.

As shown in fig. 11, when the battery cell 201 is installed in the placement groove 111, the battery cell 201 is located in the compression area 112, the compression area 112 is supported by the supporting portion 22, the weight of the battery cell 201 is carried on the frame 20, the frame 20 bears most of the weight of the battery cell 201, the tray base plate 10 bears a small portion of the weight of the battery cell 201, the load-bearing requirement of the tray base plate 10 is greatly reduced, the tray base plate 10 can be made of a material with lower strength and thinner thickness, further, the tray base plate 10 is made of a non-metal part, further, the tray base plate 10 is made of an insulating part, and the tray base plate 10 made of a light-weight non-metal composite material is sufficient, for example: the nonmetal combined material of light can be made by resin and glass fiber, and the resin can be epoxy or polyurethane, nevertheless the utility model discloses be not limited to this, the nonmetal combined material of light also can be made by other combined material that plays the same effect with resin and glass fiber, sets up like this and can reduce tray bottom plate 10 weight, is favorable to battery tray 100, battery package 200's lightweight design, also can guarantee the integrality of battery package 200 when electric core 201 thermal runaway or outside burning. In addition, the tray bottom plate 10 is made of an aluminum material, and the present invention can reduce the production cost of the tray bottom plate 10 by making the tray bottom plate 10 of a composite material, which is advantageous for reducing the production costs of the battery tray 100 and the battery pack 200. It should be noted that the tray bottom plate 10 made of the non-metal composite material has excellent electrical insulation performance, and when a serious bottom-laying accident occurs to the vehicle, the battery pack 200 does not have high-voltage risks such as arc discharge and the like.

Further, the tray bottom plate 10 is molded by light-weight non-metal composite materials, the tray bottom plate 10 forms good air tightness after resin is melted, flowed and solidified in the molding process, and meanwhile, the tray bottom plate 10 can be guaranteed to have good flatness and dimensional accuracy through molding of a mold piece, and the sealing function of the tray bottom plate 10 is guaranteed. Frame 20 can be through the metal tailor-welding shaping, only needs to guarantee welded structure intensity and necessary product plane degree behind the weld forming, and the tailor-welding is efficient, has promoted battery tray 100 production efficiency, and tray bottom plate 10 is responsible for sealedly, need not carry out the welding seam and polish and the gas tightness detects, does not have the sealed risk of losing efficacy that the welding leads to. Tray bottom plate 10 can adopt combined material compression molding, and tray bottom plate 10 production efficiency is high, thereby the mould precision is high can obtain higher plane degree, reduces electric core 201's dimensional requirement.

In addition, the existing battery tray 100 does not distinguish two functions of bearing and sealing on the product structure, and the requirement needs to be met by considering the whole bearing and sealing simultaneously when the battery tray 100 is manufactured, so that the manufacturing efficiency and the yield of the battery tray 100 are low. In the application, two functions of bearing and sealing are distinguished, the frame 20 is mainly responsible for bearing, the tray bottom plate 10 is mainly responsible for sealing the battery tray 100, and the manufacturing efficiency and the yield of the battery tray 100 are improved.

From this, through tray bottom plate 10 and the cooperation of frame 20, frame 20 bears the most weight of electric core 201, tray bottom plate 10 bears the little partial weight of electric core 201, tray bottom plate 10 mainly undertakes sealed effect, use the tray bottom plate 10 that light combined material made can, be favorable to battery tray 100, the lightweight design and the cost reduction of battery package 200, and, tray bottom plate 10 and frame 20 assembly back together, there is not the welding to lead to the sealed inefficacy risk of battery tray 100, need not carry out the welding seam and polish and battery tray 100 gas tightness detects, battery tray 100 production efficiency has been promoted.

In some embodiments of the present invention, as shown in fig. 6 and 8, the frame 20 includes a side beam 23, a front end beam 24, and a rear end beam 25, the side beam 23, the front end beam 24, and the rear end beam 25 are connected to form the installation space 21, and the connection of the side beam 23, the front end beam 24, and the rear end beam 25 includes direct connection and indirect connection, for example: to illustrate the case where the side member 23 and the front end member 24 are connected, the side member 23 and the front end member 24 may be directly connected, or the side member 23 and the front end member 24 may be indirectly connected by another member. The side members 23 and/or the front end members 24 and/or the rear end members 25 have the support portions 22, that is, at least one of the side members 23, the front end members 24, and the rear end members 25 has the support portions 22. The present application will be described by taking an example in which the side member 23 is provided with the support portion 22. Wherein, the side roof beam 23 sets up two, and rear end roof beam 25 and front end roof beam 24 all set up one, and when frame 20 placed with the mode of placing in figure 8, two side roof beams 23 left and right directions spaced apart in figure 8 set up, and front end roof beam 24, rear end roof beam 25 all connect between two side roof beams 23, and front end roof beam 24 and rear end roof beam 25 set up at the fore-and-aft direction spaced apart of frame 20 to make front end roof beam 24, rear end roof beam 25 and two side roof beams 23 inject installation space 21 jointly. And, when battery cell 201 extends along the left and right direction in fig. 8 and places, through setting up supporting part 22 in side roof beam 23, can guarantee that every battery cell 201 all is supported by supporting part 22, can further guarantee that supporting part 22 supports battery cell 201, can further guarantee that frame 20 mainly used bears battery cell 201 weight to it is reasonable to make supporting part 22 set up the position.

It is understood that when the battery tray 100 is mounted on a vehicle, the width direction of the battery tray 100 may coincide with the vehicle width direction, and the length direction of the battery tray 100 may coincide with the vehicle length direction. Of course, the width direction of the battery tray 100 may be aligned with the vehicle length direction, and the longitudinal direction of the battery tray 100 may be aligned with the vehicle width direction.

In some embodiments of the present invention, as shown in fig. 11, the lower end of the supporting portion 22 close to the side edge beam 23 is disposed, and it can also be understood that the end of the supporting portion 22 close to the side edge beam 23 away from the tray bottom plate 10 is disposed, and after the bottom plate body 11 is installed in the installation space 21, the supporting portion 22 is supported below the bottom plate body 11 by disposing the end of the supporting portion 22 close to the side edge beam 23 away from the tray bottom plate 10, and it can also be ensured that the bottom plate body 11 can be installed in the installation space 21.

The utility model discloses an in some embodiments, seal structure 13 constructs for platelike structure, sets up like this and can promote seal structure 13's surface smoothness, can make seal structure 13 and tray bottom plate 10, seal structure 13 closely laminate with frame 20 to guarantee the leakproofness between tray bottom plate 10 and the frame 20.

In some embodiments of the present invention, as shown in fig. 12, 13 and 15, the surface of the extension portion 12 facing the frame 20 is provided with a first protruding rib 121, the surface of the extension portion 12 facing the frame 20 and the first protruding rib 121 define a first glue containing area, further, the first protruding rib 121 and the extension portion 12 are integrally formed, or the first protruding rib 121 and the extension portion 12 are constructed as a separate piece, preferably, the first protruding rib 121 and the extension portion 12 are integrally formed, and the first protruding rib 121 and the tray bottom plate 10 are integrally hot-pressed and formed by using the same material, so that additional parts can be avoided, the cost can be reduced, and the assembly efficiency of the battery pack 200 can be improved. When seal structure 13 is glued for the structure, assembly frame 20 and tray bottom plate 10 in-process, scribble the structure glue on frame 20 surface earlier, then install tray bottom plate 10's bottom plate body 11 in installation space 21, the first protruding muscle 121 of extension 12 glues the extrusion structure with the structure earlier and glues, it glues to make the structure glue flow in first appearance and glues the district, it glues to glue through first protruding muscle 121 extrusion structure, can make the structure glue set up between extension 12 and frame 20 uniformly, can make each regional thickness of seal structure 13 more even, better seal dodge through-hole 122, electric core 201 installs back in standing groove 111, can guarantee that electric core 201 puts steadily.

In some embodiments of the present invention, as shown in fig. 12, fig. 13 and fig. 15, a plurality of avoidance through holes 122 are disposed at intervals in the circumferential direction of the extension portion 12, further, a plurality of avoidance through holes 122 are disposed at intervals in the extension direction of the extension portion 12 in sequence, at least two adjacent avoidance through holes 122 in the plurality of avoidance through holes 122 are provided with a first protruding rib 121 therebetween, preferably, any two adjacent avoidance through holes 122 are provided with a first protruding rib 121 therebetween, further, two adjacent avoidance through holes 122 are provided with at least one first protruding rib 121 therebetween, the structure adhesive is extruded through the plurality of first protruding ribs 121 simultaneously, the structure adhesive can be disposed between the extension portion 12 and the frame 20 more uniformly, each region thickness of the sealing structure 13 can be more uniform, after the battery cell 201 is installed in the placement groove 111, it can be better guaranteed that the battery cell 201 is placed stably.

In some embodiments of the present invention, the surface of the extension portion 12 facing the frame 20 is provided with a convex platform protruding toward the frame 20, the surface of the extension portion 12 facing the frame 20 and the convex platform define a first glue containing area, further, the convex platform and the extension portion 12 are integrally formed, or the convex platform and the extension portion 12 are constructed as separate pieces, preferably, the convex platform and the extension portion 12 are integrally formed, the convex platform and the tray bottom plate 10 are integrally formed by hot press molding using the same material, the convex platform is arranged around the avoiding through hole 122, further, the convex platforms are multiple, the multiple convex platforms and the multiple avoiding through holes 122 are arranged in one-to-one correspondence, wherein when the sealing structure 13 is the structure glue, the structure glue is firstly coated on the surface of the frame 20 during the process of assembling the frame 20 and the tray bottom plate 10, then the bottom plate body 11 of the tray bottom plate 10 is installed in the installation space 21, the convex platform of the extension portion 12 is firstly contacted with the structure glue to extrude the structure glue, make the structure glue and flow into first appearance and glue the district, glue through boss extrusion structure, can make the structure glue and set up evenly between extension 12 and frame 20, can make each regional thickness of seal structure 13 more even, electric core 201 installs the back in standing groove 111, can guarantee that electric core 201 puts steadily.

In some embodiments of the present invention, the height of the first rib 121 protruding the surface of the extension portion 12 and the height of the boss protruding the surface of the extension portion 12 are H1, which satisfy the following relation: h1 is more than or equal to 0.5mm and less than or equal to 1.5mm, and after the structural adhesive is extruded by the extension part 12, the arrangement can ensure that the thickness of the sealing structure 13 is appropriate.

In some embodiments of the present invention, as shown in fig. 12, 13 and 15, the surface of the bottom plate body 11 facing the supporting portion 22 is provided with a second rib 114 corresponding to the supporting portion 22, the surface of the bottom plate body 11 facing the supporting portion 12 and the second rib 114 define a second glue containing area, and after the frame 20 and the tray bottom plate 10 are assembled together, the second rib 114 can be supported on the supporting portion 22. Further, the protruding muscle 114 of second is provided with a plurality ofly, wherein, when seal structure 13 is glued for the structure, assembly frame 20 and tray bottom plate 10 in-process, scribble the structure glue on the supporting part 22 with the surface relative of bottom plate body 11, then install bottom plate body 11 in installation space 21, the protruding muscle 114 of second is glued the contact extrusion structure with the structure earlier and is glued, make the structure glue flow in the second hold glue the district, extrude the structure glue through the protruding muscle 114 of second, can make the structure glue set up between supporting part 22 and bottom plate body 11 uniformly, can make each regional thickness of seal structure 13 more even, electric core 201 installs the back in standing groove 111, can guarantee that electric core 201 puts steadily.

In some embodiments of the present invention, as shown in fig. 15, from the side frame 20 to the installation space 21, the end of the second rib 114 close to the installation space 21 extends out of the supporting portion 22. When the battery tray 100 is placed in the manner shown in fig. 15, the side frame 23 on the right side is taken as an example for illustration, and the left end of the second rib 114 extends out of the left end of the support portion 22, because the side frame 23 is a main bearing member, it is necessary to strictly ensure the uniform and stable thickness of the glue layer in the whole sealing structure 13 region, and therefore the end of the second rib 114 close to the installation space 21 extends out of the support portion 22, so as to ensure the uniform and stable thickness of the glue layer in the whole sealing structure 13 region.

In some embodiments of the present invention, as shown in fig. 11, when the battery tray 100 is placed in the placement mode shown in fig. 11, in the height direction of the battery tray 100, the orthographic projection of the supporting portion 22 and the orthographic projection of the pressed region 112 have an overlapping region, and after the battery cell 201 is placed in the placement groove 111, the arrangement can ensure that the supporting portion 22 supports the battery cell 201, and can ensure that the frame 20 is mainly used for bearing the weight of the battery cell 201.

In some embodiments of the present invention, the bottom wall 113 of the placing groove is formed with the pressed area 112, it can also be understood that the pressed area 112 is disposed on the bottom wall 113 of the placing groove, as shown in fig. 11, when the battery tray 100 is placed in the placing mode shown in fig. 11, the supporting portion 22 is located below the bottom plate body 11, the supporting portion 22 is supported on the bottom wall 113 of the placing groove, the supporting portion 22 can be ensured to be supported below the pressed area 112 by such a configuration, it can be further ensured that the supporting portion 22 supports the battery cell 201, it can be further ensured that the frame 20 is mainly used for bearing the weight of the battery cell 201, and thus the pressed area 112 is reasonable in position.

In some embodiments of the present invention, as shown in fig. 8, the frame 20 further includes a supporting beam 26, the supporting beam 26 is connected between the two side beams 23, or the supporting beam 26 is connected between the front end beam 24 and the rear end beam 25, or the supporting beam 26 is connected between the front end beam 24 and the side beam 23, or the supporting beam 26 is connected between the rear end beam 25 and the side beam 23, so that the structural strength of the frame 20 can be improved, and thus the structural strength of the battery tray 100 can be improved.

In some embodiments of the present invention, as shown in fig. 5 and fig. 6, the battery tray 100 further includes an expansion beam 27, the expansion beam 27 is disposed on the tray bottom plate 10 far from one side of the frame 20, when the battery tray 100 is placed in the manner as shown in fig. 5 and fig. 6, the expansion beam 27 is disposed above the tray bottom plate 10, the expansion beam 27 is mounted on the supporting beam 26 through a bolt, after the battery cell 201 is mounted in the placing groove 111, when the battery cell 201 expands, the expansion beam 27 can limit the battery cell 201, thereby improving the safety of the battery cell 201.

Further, the supporting beam 26 is provided in plural, the plural supporting beams 26 are sequentially spaced apart along the length direction of the side beam 23, the length direction of the side beam 23 is the front-rear direction in fig. 6, the plural expansion beams 27 are provided, the plural expansion beams 27 are sequentially spaced apart along the length direction of the side beam 23, the plural expansion beams 27 and the plural supporting beams 26 are provided in a one-to-one correspondence, and one expansion beam 27 is mounted to one supporting beam 26 by a bolt, so that the expansion beam 27 can be stably mounted to the side frame 20.

In some embodiments of the present invention, as shown in fig. 5-7 and 11, when the battery tray 100 is placed in the placing manner shown in fig. 11, the upper end of the placing groove 111 is opened, and the battery cell 201 is placed into the placing groove 111 from the opened end of the placing groove 111, so as to achieve the technical effect of placing the battery cell 201 into the placing groove 111. The extension portion 12 is extended along the open end of the placement groove 111, as shown in fig. 11, the extension portion 12 is connected to the upper end of the base plate body 11, and after the base plate body 11 is installed in the installation space 21, the extension portion 12 can be disposed outside the placement groove 111, and the extension portion 12 can be disposed corresponding to the frame 20 in the vertical direction of the battery tray 100, thereby ensuring the sealing of the battery tray 100.

In some embodiments of the present invention, as shown in fig. 8, 10 and 11, the surface of the supporting portion 22 close to the tray bottom plate 10 is configured to be a plane, that is, as shown in fig. 11, the upper surface of the supporting portion 22 is set to be a plane, so that the supporting area of the supporting portion 22 and the bottom plate body 11 can be ensured, and the supporting portion 22 can better support the battery cell 201.

In some embodiments of the present invention, the tray bottom panel 10 is bonded to the frame 20. Further, the tray bottom plate 10 and the frame 20 are bonded and connected by gluing the adhesive (such as structural adhesive) between the tray bottom plate 10 and the frame 20, the dimensional tolerance of the frame 20 is absorbed by the thickness control of the adhesive, meanwhile, the tray bottom plate 10 has good flatness, and the manufacturing requirements on the tray bottom plate 10 and the frame 20 are reduced by the aid of the characteristic that the adhesive can absorb the tolerance. Moreover, when the existing tray bottom plate 10 and the frame 20 are welded, the tray bottom plate 10 is easily deformed in the welding process, the size requirement on the battery cell 201 is increased in the subsequent battery pack 200 assembling process, and the assembling efficiency of the battery pack 200 is affected. In the application, the tray bottom plate 10 and the frame 20 are connected in a bonding mode, the tray bottom plate 10 and the frame 20 are prevented from being connected in a welding mode, the tray bottom plate 10 can be prevented from deforming, the size requirement on the battery cell 201 is reduced in the subsequent battery pack 200 assembling process, and the assembling efficiency of the battery pack 200 is improved.

The utility model discloses an in some embodiments, tray bottom plate 10 constructs as integrated into one piece spare, and tray bottom plate 10 adopts the combined material compression molding of light, forms good gas tightness after tray bottom plate 10 because of resin melting flow solidification in the mould pressing process, can guarantee that tray bottom plate 10 has good plane degree and dimensional accuracy through the shaping of mould spare simultaneously, guarantees tray bottom plate 10 sealing function.

In some embodiments of the present invention, the frame 20 is made of aluminum, the frame 20 can be made of aluminum material, and the frame 20 can also be made of steel material, but the present invention is not limited thereto, and the frame 20 can also be made of other metal materials that are the same as the steel material, preferably, the frame 20 is made of steel material, the frame 20 can be formed by rolling steel material, and the frame 20 can also be formed by extruding steel material. Wherein, through setting up frame 20 as the metalwork, can improve frame 20 bearing capacity, can reduce frame 20 deformation risk. Moreover, the frame 20 made of the steel material can endure high temperature above 1500 ℃, so that the integrity of the frame 20 when the battery cell 201 is out of control due to heat is ensured.

In some embodiments of the utility model, as shown in fig. 11, side roof beam 23 includes boundary beam body 231, boundary beam body 231 defines the cavity, connecting plate 232 has in the cavity, connecting plate 232 inclines to be connected between the diapire 234 of the roof 233 of the cavity of cavity and cavity, connecting plate 232 can separate the cavity for a plurality of subchambers 235, a plurality of subchambers 235 arrange in proper order at the width direction of side roof beam 23, when battery tray 100 places with the mode of placement in fig. 11, the width direction of side roof beam 23 means the left and right directions in fig. 11. Further, as shown in fig. 11, from battery tray 100 top to below direction, connecting plate 232 extends the setting towards the direction slope of keeping away from installation space 21, and connecting plate 232 separates the cavity for two sub-chambers 235, and two sub-chambers 235 arrange in proper order in the width direction of side roof beam 23, set up like this and can promote side roof beam 23 structural strength, can improve the stability of side roof beam 23, thereby can promote side roof beam 23 and support electric core 201 ability, also can further reduce frame 20 deformation risk.

And, through a plurality of sub-cavities 235 arrange in proper order in the width direction of side roof beam 23, when receiving the striking in the sub-cavity 235 of the installation space 21 of keeping away from battery tray 100 in a plurality of sub-cavities 235, for example: when the sub-cavity 235 on the left side in fig. 11 is impacted, the impacted sub-cavity 25 can absorb the impact force, so that the magnitude of the impact force transmitted to the inside of the battery pack 200 is reduced, the risk that the battery cell 201 in the battery pack 200 is damaged by the impact can be reduced, and the use safety of the battery pack 200 can be improved.

Further, as shown in fig. 10 and 11, a first side wall 236 of the cavity, which is remote from the installation space 21, is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the first side wall 236 is connected with the partition. Further, as shown in fig. 11, the lower end of the first side wall 236 has a first connection portion 238 extending towards the inside of the cavity, the first connection portion 238 is connected to both the bottom wall 234 and the partition portion of the cavity, and the first connection portion 238 is welded to the bottom wall 234 of the cavity, so that the structural strength of the side frame 23 can be further improved, and the stability of the side frame 23 can be further improved.

Further, as shown in fig. 10 and 11, a second side wall 237 of the cavity adjacent to the mounting space 21 is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the second side wall 237 is connected to the partition. Further, as shown in fig. 11, the upper end of the second side wall 237 is provided with a second connecting portion 239 extending inward the cavity, and the second connecting portion 239 is connected to both the top wall 233 and the partition of the cavity. The second connecting portion 239 is welded to the top wall 233 of the cavity, and the top wall 233 of the cavity, the bottom wall 234 of the cavity, the first side wall 236 and the second side wall 237 define the cavity together, so that the structural strength of the side frame 23 can be further improved, and the stability of the side frame 23 can be further improved.

Further, as shown in fig. 10 and 11, a support portion 22 is connected to a lower end of the second side wall 237, and the support portion 22 is connected to the bottom wall 234 of the cavity. Further, in the width direction of the side frame 23, one end of the bottom wall 234 of the cavity close to the installation space 21 extends to the lower side of the support portion 22, the end of the bottom wall 234 of the cavity close to the installation space 21 is connected with the end of the support portion 22 close to the installation space 21, further, a boss structure 2391 protruding towards the support portion 22 is arranged at the position of the bottom wall 234 of the cavity below the support portion 22, the boss 2391 is connected with the support portion 22, so that the structural strength of the side frame 23 can be further improved, and the stability of the side frame 23 can be further improved.

Further, the structure department that the diapire 234 of cavity is located supporting part 22 below is provided with a plurality of boss structure 2391, and a plurality of boss structure 2391 set gradually in the width direction of side roof beam 23, and at least one boss structure 2391 in a plurality of boss structure 2391 is located the pressurized area 112 below, and the setting can make boss structure 2391 support electric core 201 like this, can further promote the bearing capacity of frame 20, reduces supporting part 22 and warp the risk.

In some embodiments of the present invention, as shown in fig. 5 and 6, the lifting lug structure 30 is connected to the frame 20, the lifting lug structure 30 is provided with a mounting hole, and the lifting lug structure 30 is mounted on the vehicle through a fastener (e.g., a bolt), so as to mount the battery pack 200 on the vehicle.

As shown in fig. 1 to 11, a battery pack 200 according to an embodiment of the present invention includes a battery cell 201, a battery tray 100, and a cover 40. The battery tray 100 is the battery tray 100 of the above embodiment, the battery cells 201 are arranged in the battery tray 100, the cover body 40 and the tray bottom plate 10 jointly define the placing cavities 41 for placing the battery cells 201, and the cover body 40 and the battery tray 100 are connected by fasteners, and the fasteners pass through the cover body 40, the tray bottom plate 10 and the frame 20. Further, the cover body 40 is covered on the open end of the placement groove 111 to define the placement cavity 41, the extension portion 12 is sandwiched between the cover body 40 and the bezel 20, and the cover body 40, the tray base plate 10 and the bezel 20 are assembled together through the cover body 40, the extension portion 12 and the bezel 20 using bolts. Further, a sealing member 203 (e.g., a sealing ring) is interposed between the extension portion 12 and the cover 40, the sealing member 203 can seal the placing cavity 41, the cover 40 and the tray bottom plate 10 define a sealed insulating cavity (i.e., the placing cavity 41), after the battery cell 201 is placed in the placing cavity 41, the battery cell 201 can be completely isolated from the frame 20, the battery cell 201 is in a completely insulating environment, and the battery pack 200 has no risk of leakage.

In some embodiments of the present invention, as shown in fig. 1, the battery pack 200 may further include: the pressing plate 202, the pressing plate 202 are constructed in a closed-loop structure, the cover body 40, the sealing element 203 and the extending portion 12 are clamped between the pressing plate 202 and the frame 20, the pressing plate 202, the cover body 40, the tray base plate 10 and the frame 20 are assembled together by penetrating the pressing plate 202, the cover body 40, the extending portion 12 and the frame 20 through bolts, and the pressing plate 202 can enable the whole sealing element 203 to be uniformly pressed, so that the placing cavity 41 is guaranteed to be sealed reliably.

According to the utility model discloses the vehicle, including the battery package 200 of above-mentioned embodiment, battery package 200 is installed and is provided the electric energy in the vehicle, the frame 20 of battery package 200 bears the most weight of electric core 201, tray bottom plate 10 bears the less part weight of electric core 201, tray bottom plate 10 mainly undertakes sealing action, tray bottom plate 10 that the combined material of using light makes can, be favorable to battery tray 100, battery package 200, the lightweight design and the cost reduction of vehicle, and, tray bottom plate 10 and frame 20 assemble back together, it leads to battery tray 100 to seal the inefficacy risk not to weld, need not carry out the welding seam and polish and battery tray 100 gas tightness detects, battery tray 100 has been promoted, vehicle production efficiency. Meanwhile, the tray bottom plate 10 made of the composite material has excellent electrical insulation performance, and when a serious bottom-laying accident occurs to a vehicle, high-voltage risks such as arc discharge and the like do not occur to the battery pack 200, so that the safety of the vehicle is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery tray, comprising:

the tray bottom plate comprises a bottom plate body and an extension part, the bottom plate body defines a placing groove for placing a battery cell, and the extension part extends along the circumferential edge of the bottom plate body;

the bottom plate body is arranged in the mounting space, the extension part is positioned outside the mounting space and arranged on the side frame, and the extension part is provided with an avoidance through hole for a fastener to pass through;

and the sealing structure is used for sealing the avoiding through hole.

2. The battery tray according to claim 1, wherein the sealing structure is provided between the extension portion and the frame and corresponds to the escape through hole; and/or the sealing structure is arranged in the avoiding through hole to seal the avoiding through hole.

3. The battery tray of claim 1, wherein the extension and the rim are sealingly connected by a sealing structure.

4. The battery tray of claim 3, wherein the sealing structure is plural, and the plurality of sealing structures are spaced sequentially.

5. The battery tray according to claim 1, wherein the frame has a support portion extending toward the inside of the mounting space, the support portion supporting the bottom plate body, and the sealing structure is provided between the support portion and the bottom plate body.

6. The battery tray of claim 1, wherein the sealing structure is configured as a sealant.

7. The battery tray according to claim 5, wherein the side frame includes side frames, front end frames, and rear end frames, the side frames, the front end frames, and the rear end frames being connected to form the mounting space, the side frames and/or the front end frames and/or the rear end frames having the support portions.

8. The battery tray of claim 7, wherein the support portion is disposed proximate a lower end of the side sill.

9. The battery tray of claim 6, wherein a surface of the extension portion facing the frame is provided with a first rib, and the surface of the extension portion facing the frame and the first rib define a first glue receiving area.

10. The battery tray according to claim 9, wherein the extension portion is provided with a plurality of the avoiding through holes, the plurality of the avoiding through holes are spaced apart in a circumferential direction of the extension portion, and the first rib is provided between at least two adjacent avoiding through holes of the plurality of the avoiding through holes.

11. The battery tray according to claim 6, wherein a surface of the extension portion facing the frame is provided with a boss protruding toward the frame, the surface of the extension portion facing the frame and the boss define a first glue containing area, and the boss is arranged around the avoiding through hole.

12. The battery tray according to claim 7, wherein a second rib corresponding to the support portion is provided on a surface of the bottom plate body facing the support portion, the surface of the bottom plate body facing the support portion and the second rib define a second glue accommodating area, and the second rib abuts against the support portion.

13. The battery tray according to claim 12, wherein an end of the second rib near the mounting space is protruded from the support portion in a direction from the rim to the mounting space.

14. The battery tray of claim 1, wherein the tray bottom plate is an integrally formed piece.

15. A battery pack, comprising:

an electric core;

a battery tray according to any one of claims 1-14;

the cover body and the tray bottom plate jointly define a placing cavity for placing the battery core, and the cover body and the battery tray are connected through the fastener.

16. A vehicle characterized by comprising the battery pack according to claim 15.