CN217387366U

CN217387366U - Tray, battery pack and electric vehicle

Info

Publication number: CN217387366U
Application number: CN202220911736.4U
Authority: CN
Inventors: 王俊; 刘诱; 苗微; 谭晶
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-09-06
Anticipated expiration: 2032-04-19

Abstract

The application provides tray, battery package and electric vehicle. The tray includes tray main part and connects in two at least spandrel girders of tray main part. The tray main part includes at least two bearing areas and at least one buffer area, bearing area and buffer area along first direction interval distribution, is equipped with a buffer area between every two adjacent bearing areas, and the bearing area is used for bearing the weight of the installation battery, and the battery is along whole bearing area and buffer area of first direction horizontal span. A bearing beam is arranged on one side of each bearing region, which is far away from the battery, and the bearing beam extends along a second direction which is perpendicular to the first direction. The outer surfaces of the bearing area and the buffer area, which face the battery, have a height difference, a first buffer space is formed between the buffer area and the battery, and/or a second buffer space is formed between the bearing beam and the bearing area. When the tray is used for installing the battery, the impact force from one side, far away from the battery, of the tray can be absorbed through the first buffer space and/or the second buffer space, and therefore the risk that the battery is directly impacted is reduced.

Description

Tray, battery pack and electric vehicle

Technical Field

The present application relates to the field of battery technology, and in particular, to a tray for mounting a battery, a battery pack including the tray, and an electric vehicle including the battery pack.

Background

With the increasing popularity of electric vehicles, the safety of power batteries is becoming a concern. At present, the power battery is usually installed in a tray of a battery pack and fixed at the bottom of a vehicle body through the tray. However, the conventional pallet is weak in anti-extrusion capability, and when the pallet is impacted from the direction of the bottom of the vehicle body, the pallet is likely to deform to damage the power battery, which brings great threat to the safety of the power battery.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a tray, battery package and electric vehicle, and when this tray was used for installing the battery, can absorb the impact that is kept away from battery one side from the tray, reduced the risk that the battery received direct striking.

In order to achieve the above object, in a first aspect, the present application provides a tray for mounting a battery, the tray comprising a tray main body and at least two load-bearing beams connected to the tray main body;

the tray main body comprises at least two bearing areas and at least one buffer area, the at least two bearing areas and the at least one buffer area are distributed at intervals along a first direction, the buffer area is arranged between every two adjacent bearing areas, the bearing areas are used for bearing and installing the batteries, and the batteries transversely span all the bearing areas and the buffer areas along the first direction;

one side of each bearing region, which is far away from the battery, is provided with one bearing beam, the bearing beams extend along a second direction, and the second direction is vertical to the first direction;

the bearing area and the buffer area are provided with height difference on the outer surfaces facing the battery respectively, a first buffer space is formed between the buffer area and the battery, and/or a second buffer space is formed between the bearing beam and the corresponding bearing area.

In a second aspect, the present application provides a battery pack comprising at least one battery, and a tray as described above, the at least one battery being mounted on the tray.

In a third aspect, the present application provides an electric vehicle comprising a battery pack as described above.

In the tray, battery package and electric vehicle that this application provided, the tray include the tray main part and connect in two at least spandrels of tray main part, the tray main part includes along first direction interval distribution two at least bearing areas and at least one buffer, each one side that the bearing area kept away from the battery is equipped with one the spandrel girder, the battery of battery package passes through the bearing area install in on the tray, just the battery is followed first direction is whole transversely striden the bearing area with the buffer, wherein the bearing area with the buffer respectively towards be equipped with the difference in height between the surface of battery, make the buffer with be formed with first buffer space between the battery, and/or the spandrel girder with correspond be formed with second buffer space between the bearing area. Therefore, at least part of impact force from one side of the tray, which is far away from the battery, can be absorbed through the first buffer space and/or the second buffer space, and the impact force is dispersed and buffered, so that the risk that the battery is directly impacted is reduced, and the safety of the battery is improved.

Additional aspects and advantages of the present application 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 present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic partial perspective view of a battery pack according to an embodiment of the present disclosure.

Fig. 2 is a perspective view of the battery pack of fig. 1 from another perspective.

Fig. 3 is a partially exploded perspective view of the battery pack shown in fig. 1.

Fig. 4 is a perspective view of the tray body and the connector mounting plate shown in fig. 3.

Fig. 5 is a schematic perspective view of the load-bearing beam and the lifting lug shown in fig. 1.

Fig. 6 is a schematic perspective view of a load-bearing beam according to another embodiment of the present application.

Fig. 7 is a perspective view of the load beam shown in fig. 6 from another perspective.

Fig. 8 is a perspective view of the stopper beam shown in fig. 3.

Figure 9 is a side view of the restraint beam shown in figure 8.

Description of the main element symbols:

battery pack 1

Battery 12

Tray 14

Tray body 141

Load bearing zone 1411

Buffer zone 1413

Spandrel girder 142

First recess 1421

First flange 1423

Support beam 143

Second groove 1431

Second flange 1433

Limit beam 144

Beam body 1441

Inner cavity 1442

Third turned-over edge 1443

Fourth turned-over edge 1444

Connector mounting plate 145

Mounting hole 1451

Lifting lug 146

Adhesive layer 16

First direction A

Second direction B

The following detailed description further describes the present application in conjunction with the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present application, 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 accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

Referring to fig. 1, the present application provides an electric vehicle including a battery pack 1 and a vehicle body. The battery pack 1 is fixed on the vehicle body and used for providing electric energy for the electric vehicle. Specifically, in one of the embodiments of the present application, the battery pack 1 may be fixed to the bottom of the vehicle body. In other embodiments, the battery pack 1 may be fixed to the top of the vehicle body or even fixed inside the vehicle body, which is not limited in this respect. It should be noted that the electric vehicle further includes other components such as a battery management system and a power system, and the electric vehicle may be any one of electric vehicles in the prior art, and the specific structure thereof is not described herein again.

As shown in fig. 1, in the embodiment of the present application, the battery pack 1 includes a battery 12 and a tray 14 for mounting the battery 12. The battery 12 may be one or more single batteries, or may be one or more battery modules. Preferably, the battery 12 includes a plurality of unit batteries or a plurality of battery modules to increase the capacity of the battery pack 1.

Referring to fig. 1 to 4, in an embodiment of the present application, the tray 14 specifically includes a tray main body 141 and at least two load-bearing beams 142 connected to the tray main body 141. Wherein the tray body 141 includes at least two carrying zones 1411 and at least one buffer zone 1413. The at least two carrying zones 1411 and the at least one buffer zone 1413 are spaced apart from each other along the first direction a, and one buffer zone 1413 is disposed between every two adjacent carrying zones 1411. The carrying zone 1411 is used for carrying and mounting the battery 12, and the battery 12 spans all of the carrying zone 1411 and the buffer zone 1413 along the first direction a. One side of each of the bearing regions 1411, which is away from the battery 12, is correspondingly provided with one of the bearing beams 142, and the bearing beams 142 extend along a second direction B, which is perpendicular to the first direction a. In the embodiment of the present application, the first direction a and the second direction B are a longitudinal direction and a width direction of the electric vehicle, respectively, or the first direction a and the second direction B are a width direction and a length direction of the electric vehicle, respectively, but the first direction a and the second direction B may be two arbitrary perpendicular directions, which is not particularly limited.

It is emphasized that, in the embodiment of the present application, a height difference is formed between the outer surfaces of the load-bearing zone 1411 and the buffer zone 1413, which face the battery 12, a first buffer space is formed between the buffer zone 1413 and the battery 12, and/or a second buffer space is formed between the load-bearing beam 142 and the corresponding load-bearing zone 1411. In this way, when the side of the tray 14 away from the battery 12 is subjected to an impact force, the first buffer space and/or the second buffer space can absorb at least part of the impact force, so as to disperse and buffer the impact force, thereby reducing the risk of the battery 12 being directly impacted and improving the safety of the battery 12.

For convenience of description, the structure of the tray 14 will be further described below by taking the tray body 141 including two carrying zones 1411 and one buffer zone 1413 as an example.

Specifically, referring to fig. 2 and 4, in one embodiment of the present application, the tray main body 141 is substantially disc-shaped and is integrally formed by stamping and drawing a metal plate. Integrated into one piece tray main part 141 has better leakproofness, can effectively isolated foreign matter certainly tray main part 141 keeps away from one side of battery 12 gets into in the battery package 1, ensure battery 12 is in good operational environment, is favorable to improving battery package 1's life.

As shown in fig. 2 and 4, in the tray main body 141 formed by stamping and stretching, the buffer zone 1413 is recessed relative to the carrying zone 1411 in a direction away from the battery 12, so that an outer surface of the buffer zone 1413 facing away from the battery 12 protrudes beyond an outer surface of the carrying zone 1411 facing away from the battery 12 (see fig. 2), and a height difference is provided between outer surfaces of the carrying zone 1411 and the buffer zone 1413 facing the battery 12, and the buffer zone 1413 has an open groove structure. It is understood that when the battery 12 is mounted on the tray 14, the battery 12 covers the opening of the buffer zone 1413, but the portion of the battery 12 corresponding to the buffer zone 1413 is not in contact with the buffer zone 1413, so as to form the first buffer space. Therefore, when the side of the tray 14 away from the battery 12 is subjected to an impact force, especially the side of the buffer zone 1413 away from the battery 12 is subjected to an impact force, the buffer zone 1413 not contacting the battery 12 can be deformed, so as to absorb at least part of the impact force, thereby achieving the effects of dispersing and relieving the impact force, and further reducing the risk of direct impact on the battery 12, especially the part of the battery 12 corresponding to the buffer zone 1413. It is understood that the larger the height difference between the outer surfaces of the bearing zone 1411 and the buffer zone 1413 facing the battery 12 is, the larger the first buffer space is, so that more impact force can be absorbed, and the better the impact dispersion and buffering effect on the side of the tray 14 away from the battery 12 is.

Referring to fig. 5 in conjunction with fig. 3, in an embodiment of the present invention, similar to the tray main body 141, the bearing beam 142 may also be formed by integrally stamping and stretching a metal plate, and the bearing beam 142 is used for bearing the tray main body 141 and the battery 12 mounted on the tray main body 141.

Specifically, as shown in fig. 3 and 5, the load-bearing beam 142 formed by stamping and stretching is a strip-shaped beam structure, and the load-bearing beam 142 includes a first groove 1421 opening toward the tray main body 141 and extending along the second direction B, so that the portion of the load-bearing beam 142 provided with the first groove 1421 and the corresponding load-bearing zone 1411 form the second buffer space therebetween. Similarly, when the side of the tray 14 away from the battery 12 is subjected to an impact force, especially when the side of the load-bearing beam 142 away from the battery 12 is subjected to an impact force, the portion of the load-bearing beam 142, where the first recess 1421 is provided, that does not contact the battery 12 may be deformed, so as to absorb at least part of the impact force, thereby achieving the effects of dispersing and relieving the impact force, and further reducing the risk of direct impact on the battery 12, especially on the portion of the battery 12 corresponding to the load-bearing beam 142.

Optionally, in a possible embodiment, the first recess 1421 may extend along the second direction B to two opposite ends of the bearing beam 142 in the second direction B, that is, the first recess 1421 is a strip-shaped groove with a length equal to that of the bearing beam 142. Optionally, in another possible embodiment, the first recess 1421 may extend a partial distance along the second direction B, that is, the first recess 1421 is a strip-shaped groove having a length smaller than that of the load-bearing beam 142, in this embodiment, the first recess 1421 may be provided in one or more than one, and a plurality of the first recesses 1421 are arranged at intervals along the second direction B. Specifically, in the examples of fig. 3 and 5, the first recess 1421 is a strip-shaped groove having the same length as the bearing beam 142, the bearing beam 142 has a simple structure, and is convenient for stamping and stretching, and the formed second buffer space is larger, so as to achieve better dispersion and buffering effects on impact.

The cross-sectional shape of the inner cavity of the first groove 1421 may be, but is not limited to, a semi-circle, a rectangle, or a trapezoid. Preferably, in the example of fig. 3 and 5, the cross-sectional shape of the groove cavity of the first groove 1421 is rectangular, so that the portion of the load-bearing beam 142 formed by stamping and stretching, where the first groove 1421 is provided, is in a planar structure, which is beneficial to improving the installation stability of the tray 14.

Alternatively, as shown in fig. 2, in the embodiment of the present application, the outer surface of the buffer zone 1413 facing away from the battery 12 may be flush with the outer surface of the load-bearing beam 142 facing away from the battery 12, or may be closer to the battery 12 than the outer surface of the load-bearing beam 142 facing away from the battery 12. Preferably, in the example of fig. 2, an outer surface of the buffer zone 1413 facing away from the battery 12 is flush with an outer surface of the bearing beam 142 facing away from the battery 12, so that when the tray 14 is mounted on the vehicle body 3 of the electric vehicle, both the outer surface of the buffer zone 1413 facing away from the battery 12 and the outer surface of the bearing beam 142 facing away from the battery 12 can be used as mounting surfaces, which is beneficial to improving the stability of the tray 14 mounted on the vehicle body.

It can be understood that, in the embodiment of the present application, the greater the depth of the first recess 1421, the greater the second buffer space is, so that more impact force can be absorbed, and the better the impact dispersion and buffering effect on the side of the tray 14 away from the battery 12 is. In some embodiments, a side of the carrying region 1411 facing away from the battery 12 may be provided with a slot corresponding to the first groove 1421, and the first groove 1421 and the corresponding slot together form the second buffer space. Compared with the second buffer space formed by only the first groove 1421, the second buffer space formed by the first groove 1421 and the corresponding slot is larger, so that the impact on the side of the tray 14 away from the battery 12 can be dispersed and buffered better.

Further, as shown in fig. 3 and fig. 5, in the embodiment of the present application, the bearing beam 142 further includes at least one first flange 1423, and the first flange 1423 is used to connect the tray main body 141 (i.e., the corresponding bearing zone 1411). Specifically, in the example of fig. 3 and 5, the bearing beam 142 includes a pair of first flanges 1423 extending along the second direction B, and the pair of first flanges 1423 are spaced apart from each other along the first direction a on two opposite sides of the first recess 1421 along the first direction a.

The first flange 1423 may be connected to the tray body 141 by any common method, such as bonding, welding, or riveting, preferably welding, and is simple to operate and high in connection strength.

Of course, in other embodiments, the bearing beam 142 may also be directly connected to the bearing zone 1411 of the tray main body 141 through the portion provided with the first recess 1421, so that the first flange 1423 is not required to be provided, and the structure of the bearing beam 142 is simplified.

In the above embodiment, the bearing beam 142 is a concave member provided with the first recess 1421, and after the bearing beam 142 is connected to the corresponding bearing zone 1411, the bearing zone 1411 can close the first recess 1421 of the bearing beam 142, and the two are connected in a closed manner, so that not only can the overall mechanical strength of the tray 14 be improved, but also the second buffer space for absorbing the impact force can be formed between the bearing beam 142 and the corresponding bearing zone 1411.

It is understood that, in other embodiments, the bearing beam 142 may also be a tubular beam structure, the bearing beam 142 has a tube cavity extending along the second direction B, the tube cavity forms the second buffer space, and the bearing beam 142 is not provided with a groove and has high mechanical strength.

In summary, in one embodiment of the present application, a height difference is provided between the outer surfaces of the load-bearing zones 1411 and the buffer zones 1413 facing the battery 12, so that the first buffer space is formed between the buffer zones 1413 and the battery 12, and in addition, the second buffer space is formed between the load-bearing beam 142 and the corresponding load-bearing zone 1411, when an impact is applied to a side of the tray 14 away from the battery 12, the first buffer space and the second buffer space can absorb at least a portion of the impact from the side of the tray 14 away from the battery 12, which has an effect of dispersing and buffering the impact, so as to reduce a risk that the battery 12 across all of the load-bearing zones 1411 and the buffer zones 1413 is directly impacted, and improve safety of the battery 12.

Referring to fig. 2, fig. 3 and fig. 5 again, preferably, in one embodiment of the present application, at least one side of at least one of the bearing beams 142 in the first direction a is provided with one or more buffer structures, and the buffer structures are distributed at intervals along the second direction B. A third buffer space is formed between the buffer structure and the tray main body 141 (specifically, the bearing zone 1411 corresponding to the bearing beam 142). In this way, at least a part of the impact force from the side of the tray 14 away from the battery 12 can also be absorbed by the addition of at least one third buffer space, further reducing the risk of the battery 12 being directly impacted.

Specifically, referring to fig. 3 and fig. 5, in the present embodiment, a plurality of the buffer structures are disposed on a side of each of the bearing beams 142 away from the buffer zone 1413 in the first direction a, and each of the buffer structures is a supporting beam 143.

More specifically, the support beam 143 includes a second groove 1431 opened toward the tray main body 141 and extending in the first direction a, and the third buffer space is formed between a portion of the support beam 143 provided with the second groove 1431 and the tray main body 141. It can be understood that when the side of the tray 14 away from the battery 12 is subjected to an impact force, especially the side of the supporting beam 143 away from the battery 12, the portion of the supporting beam 143 provided with the second groove 1431, which is not in contact with the battery 12, can be deformed, so as to absorb at least part of the impact force, which has the effect of dispersing and buffering the impact force, thereby reducing the risk of the battery 12, especially the portion of the battery 12 corresponding to the supporting beam 143, being directly impacted. Similarly, the larger the depth of the second groove 1431 is, the larger the third buffer space is, so that more impact force can be absorbed, and the better the dispersing and buffering effect on the impact on the side of the tray 14 far away from the battery 12 is.

Similar to the bearing beam 142, the supporting beam may also be formed by integrally stamping and stretching a metal plate. In addition, similar to the first groove 1421, the cross-sectional shape of the groove cavity of the second groove 1431 may be, but is not limited to, a semicircular shape, a rectangular shape, and a trapezoidal shape. Preferably, in the example of fig. 3 and 5, the cross-sectional shape of the groove cavity of the second groove 1431 is rectangular, so that, in the support beam 143 formed by stamping and stretching, the portion thereof provided with the second groove 1431 is in a planar structure and can be flush with the outer surface of the bearing beam 142 facing away from the battery 12, thereby collectively serving as a mounting surface to improve the mounting stability of the tray 14 on the vehicle body.

Further, as shown in fig. 3 and 5, in the embodiment of the present application, the supporting beam 143 further includes at least one second flange 1433, and the second flange 1433 is used for connecting the tray main body 141 (i.e., the corresponding carrying area 1411). Specifically, in the example of fig. 3 and 5, the support beam 143 includes a pair of second flanges 1433 extending along the first direction a, and the pair of second flanges 1433 are spaced apart from each other along the second direction B on two opposite sides of the second groove 1431 in the second direction B.

The second flange 1433 may be connected to the tray body 141 by any one of common methods such as bonding, welding, or riveting, preferably welding, and is simple to operate and high in connection strength.

Of course, in other embodiments, the supporting beam 143 may also be directly connected to the carrying area 1411 of the tray main body 141 through the portion provided with the second groove 1431, so that the second flange 1433 is not required, and the structure of the supporting beam 143 is simplified.

Optionally, as shown in fig. 5, in one embodiment of the present application, the supporting beam 143 is integrally formed with the bearing beam 142 on which the supporting beam 143 is located, a first flange 1423 of the bearing beam 142 adjacent to the supporting beam 143 is provided with an opening (not numbered in the figure) corresponding to the supporting beam 143, a pair of second flanges 1433 of the supporting beam 143 are connected to two opposite sides of the corresponding opening of the first flange 1423, and the second grooves 1431 of the supporting beam 143 are communicated with the first grooves 1421 of the bearing beam 142. In this embodiment, the bearing beam 142 and the supporting beam 143 are integrally formed, and the stamping forming process is simple and has high strength.

It is understood that the more the support beams 143, the better the anti-extrusion capability of the tray 14 in the longitudinal direction (i.e. the direction perpendicular to the bearing zone 1411), i.e. the better the dispersion and buffering effect of the impact force from the side of the tray 14 away from the battery 12, however, the more the openings of the first flange 1423 of the bearing beam 142 adjacent to the support beams 143 need to be opened, which reduces the structural strength of the bearing beam 142, and thus the structural strength of the tray 14 in the longitudinal direction, therefore, the number of the support beams 143 is preferably 3-5 in order to take account of the anti-extrusion capability and the structural strength of the tray 14 in the longitudinal direction.

Referring to fig. 6 and fig. 7, in other embodiments, the supporting beam 143 and the load-bearing beam 142 on which the supporting beam 143 is located may also be separately formed and then connected to each other, wherein a pair of second flanges 1433 of the supporting beam 143 is connected to a side of the first flange 1423 of the load-bearing beam 142, which is adjacent to the supporting beam 143, away from the first recess 1421, and the first flange 1423 separates the first recess 1421 from the second recess 1431 of the supporting beam 143. In this way, the first flanges 1423 adjacent to the supporting beam 143 do not need to be opened at the position corresponding to the supporting beam 143, and the pair of first flanges 1423 of the supporting beam 142 are both of a complete flange structure, which can increase the structural strength of the tray 14 in the longitudinal direction, and in addition, the supporting beam 142 having the complete flange structure can be manufactured by bending and stamping, which is easier to form.

It is understood that, in other embodiments, when the dimension of the bearing beam 142 in the first direction a is smaller than the dimension of the corresponding bearing zone 1411 in the first direction a, the bearing beam 142 may be provided with one or more support beams 143 on two opposite sides of the first direction a, which is not limited to this.

Referring to fig. 1 again, preferably, in one embodiment of the present application, at least one of the two load-bearing beams 142 located at the outermost side of the tray 14 in the first direction a is provided with the support beam 143 at the outer side (i.e., the side facing the outside of the tray 14) of the at least one load-bearing beam 142, and the end of the outer end (i.e., the end far away from the load-bearing beam 142) of the support beam 143 exceeds the end of the corresponding end of the battery 12 in the first direction a. Specifically, in the example of fig. 1, a plurality of support beams 143 are provided on the outer sides of the two load-bearing beams 142 located on the outermost sides of the pallet 14 in the first direction a. In this way, when the tray 14 is subjected to an impact force in the transverse direction (i.e., from the first direction a), the supporting beams 143 on the two opposite outer sides of the tray 14 can be deformed to absorb at least part of the impact force in the transverse direction, so as to reduce the possibility that either end of the battery 12 in the first direction a is subjected to a direct impact in the transverse direction, thereby further improving the safety of the battery 12.

In other embodiments of the present application, the buffer structure provided on at least one side of the load-bearing beam 142 in the first direction a may be a structure other than the support beam 143, as long as the buffer structure can absorb an impact force, and is not limited thereto. For example, in some embodiments, the support beams 143 may be replaced with an elastic body that elastically deforms when subjected to a force, and also absorbs at least a portion of the impact force from the side of the tray 14 or the side of the tray 14 away from the battery 12, thereby reducing the risk of the battery 12 being directly impacted and improving the safety of the battery 12.

Further, as shown in fig. 1, in one embodiment of the present application, the tray 14 further includes a pair of limiting beams 144 disposed on a side of the tray main body 141 away from the bearing beams 142, the pair of limiting beams 144 are distributed at intervals along the second direction B on opposite sides of the battery 12 along the second direction B, and the pair of limiting beams 144 are used for limiting expansion of the battery 12. The expansion of the battery 12 may be caused by heat generation during use, or may be caused by qualitative change of a constituent material (for example, an electrolyte) in the battery 12.

Specifically, referring to fig. 8 and 9, the limiting beam 144 includes a beam main body 1441 extending along the first direction a, the beam main body 1441 has an inner cavity 1442 penetrating through two opposite ends of the beam main body in the first direction a, and the inner cavity 1442 is used for providing a deformation space when the limiting beam 144 is pressed by the expanded battery 12.

Optionally, in an embodiment of the present application, the limiting beam 144 may be fixedly connected to only the carrying area 1411 of the tray main body 141, may also be fixedly connected to only the buffering area 1413 of the tray main body 141, and may also be fixedly connected to the carrying area 1411 and the buffering area 1413 of the tray main body 141, respectively, that is, in an embodiment of the present application, at least one of a portion of the limiting beam 144 corresponding to the carrying area 1411 and a portion of the limiting beam 144 corresponding to the buffering area 1413 is fixedly connected to the tray main body 144.

Preferably, in the example of fig. 8 and 9, a third flange 1443 is provided at a portion of the beam main body 1441 corresponding to the bearing zone 1411, the third flange 1443 extends along the first direction a, and the third flange 1443 is used for connecting a portion of the tray main body 141 located in the bearing zone 1411. In this embodiment, a fourth flange 1444 is disposed on a portion of the beam main body 1441 corresponding to the buffer area 1413, the fourth flange 1444 extends along the first direction a, and the fourth flange 1444 is used for connecting a portion of the tray main body 141 located in the buffer area 1413.

The third flange 1443 and the fourth flange 1444 may be disposed on at least one side of the beam main body 1441 in the second direction B of the inner cavity 1442. It should be noted that, when the third turned edge 1443 and the fourth turned edge 1444 are both disposed on one side of the inner cavity 1442 in the second direction B of the beam main body 1441, the third turned edge 1443 and the fourth turned edge 1444 may be disposed on the same side or different sides of the inner cavity 1442 in the second direction B of the beam main body 1441. Preferably, in the example of fig. 8 and 9, the third turned edge 1443 and the fourth turned edge 1444 are both disposed on the opposite sides of the beam main body 1441 in the second direction B of the inner cavity 1442, the beam main body 1441 is connected to the tray main body 141 through a plurality of pairs of turned edge structures, and the connection strength between the two is high, so that the connection problem between the pressed limiting beam 144 and the tray main body 141 can be avoided.

The beam main body 1441 may be formed by bending and splicing metal plates, or may be integrally formed by a rolling process, which is not limited to this. In addition, the beam body 1441 may be a concave beam structure having an opening on a side facing the tray body 141, or may be a tubular beam structure. As shown in fig. 9, in one embodiment of the present application, the beam main body 1441 is formed by splicing a plurality of metal plates by bending, the beam main body 1441 is a concave beam structure having an opening on a side facing the tray main body 141, and the axial cross-sectional shape of the beam main body 1441 is substantially "zigzag". It can be understood that, since there is a height difference between the outer surfaces of the bearing zone 1411 and the buffer zone 1413 facing the battery 12, the parts of the limiting beam 144 corresponding to the bearing zone 1411 and the buffer zone 1413 respectively have the same height difference, so that the third turned edge 1443 and the fourth turned edge 1444 also have the same height difference in the direction perpendicular to the tray main body 141.

It is also understood that, in other embodiments, the limit beam 144 may be fixedly connected to the tray main body 141 through the third flange 1443 disposed at a portion corresponding to the carrying region 1411, so that the fourth flange 1444 is not required to be disposed, and the structure of the limit beam 144 is simplified. Of course, in this embodiment, the portion of the limiting beam 144 corresponding to the bearing zone 1411 may also be directly and fixedly connected to the tray main body 141, and further the third flange 1443 is not required to be provided, so as to further simplify the structure of the limiting beam 144. When the limiting beam 144 is fixedly connected to the tray main body 141 only through the portion corresponding to the carrying area 1411, the portion of the limiting beam 144 corresponding to the buffering area 1413 may be flush with the portion of the limiting beam 144 corresponding to the carrying area 1411, so that the height difference does not need to be set in the direction perpendicular to the tray main body 141.

Of course, in other embodiments, the limiting beam 144 may also be fixedly connected to the tray main body 141 only through a portion corresponding to the buffering area 1413, wherein a portion of the limiting beam 144 corresponding to the buffering area 1413 may be directly fixedly connected to the tray main body 141, or may be fixedly connected to the tray main body 141 through the fourth flange 1444, which is not limited herein.

Referring to fig. 1 and 4 again, in one embodiment of the present application, the tray 14 further includes a connector mounting plate 145 having a substantially flat plate shape, the connector mounting plate 145 is connected to the tray main body 141, and the connector mounting plate 145 is provided with a mounting hole 1451 for mounting a connector. Specifically, in the present embodiment, the connector mounting plate 145 is disposed on a side of one of the limiting beams 144 away from the other limiting beam 144, and a power distribution mounting space is formed between the connector mounting plate 145 and the adjacent limiting beam 144. It should be noted that the power distribution installation space is used for placing a power distribution device (not shown) electrically connected to the battery 12, the power distribution device includes, but is not limited to, a relay, a protection switch, and the like, and the installation hole 1451 on the connector installation plate 145 is used for fixedly installing a connector, an adapter, and the like, which is not described herein again. It will be appreciated that in the exemplary embodiment of the present application, the mounting holes 1451 of the connector mounting plate 145 may be sized to allow for flexibility in the design of the tray 14 according to the requirements of different customers' docking inserts.

Wherein, optionally, in a possible embodiment, the connector mounting plate 145 and the tray body 141 may be integrally formed by punching and drawing, so that both may have high overall strength. Of course, in another possible embodiment, the connector mounting plate 145 may be formed separately from the tray body 141 and then connected to the tray body 141, so that the height of the tray body 141 in the longitudinal direction is greatly reduced, thereby facilitating the stamping process.

Referring to fig. 1 and 5 again, in one embodiment of the present application, the tray 14 further includes a plurality of lifting lugs 146 for fixedly mounting the tray 14, and the lifting lugs 146 are located outside of the corresponding end of the tray main body 141 in the second direction B, that is, the lifting lugs 146 are exposed out of the tray main body 141. Specifically, in this embodiment, the length of each of the bearing beams 142 in the second direction B is greater than the length of the tray main body 141 in the second direction B, and each end of each of the bearing beams 142 in the second direction B exceeds the end of the corresponding end of the tray main body 141 in the second direction B, so that each end of each of the bearing beams 142 in the second direction B facing the tray main body 141 may be provided with one of the lifting lugs 146.

In other embodiments, the length of each of the bearing beams 142 in the second direction B may also be equal to the length of the tray main body 141 in the second direction B, each end of each of the bearing beams 142 in the second direction B may abut against one of the lifting lugs 146 at an end surface thereof, and the lifting lugs 146 may also be located at an end of a corresponding end of the tray main body 141 in the second direction B.

The lifting lug 146 may be formed by integrally stamping and drawing a metal plate. Optionally, the lifting lug 146 and the bearing beam 142 may be fixedly connected by welding or the like, or may be detachably connected by bolting or the like, preferably detachably connected, so that the lifting lug 146 may be made into different structures according to different requirements of customers, and may be conveniently detached and replaced. The specific structure of the lifting lug 146 is similar to that of the lifting lug in the prior art, and the detailed description thereof is omitted.

It should be noted that, in the example of fig. 1, the tray main body 141, the bearing beams 142, the supporting beams 143, the limiting beams 144, the connector mounting plates 145, and the lifting lugs 146 may be formed by integrally stamping and stretching a metal plate, the forming process of each component is simple, and the components may be connected by welding, so that the overall structural strength of the tray 14 is high, and the battery 12 is stably supported. The metal plate includes, but is not limited to, a stainless steel plate, an aluminum alloy plate, and the like, and preferably, the stainless steel plate with light weight and high strength is beneficial to reducing the overall weight of the tray 14 and reducing the load of the electric vehicle.

Optionally, in an embodiment of the present application, the tray 14 may further include a frame connected to the tray main body 141 except for being provided with the connector mounting plate 145, and a cover plate covering the frame and the connector mounting plate 145, where the tray main body 141, the connector mounting plate 145, the frame, and the cover plate are enclosed to form an accommodating cavity, and the battery 12 is disposed in the accommodating cavity, so that the battery 12 can be protected from all directions.

Referring to fig. 1 and 3 again, in an embodiment of the present disclosure, the battery 12 includes a plurality of unit batteries, a length direction of each unit battery is the same as the first direction a, and each unit battery may be mounted on the tray main body 141 by an adhesive method. Specifically, as shown in fig. 3, in this embodiment, the battery pack 1 further includes a structural adhesive layer 16 disposed between the battery 12 and the carrying area 1411 of the tray main body 141, and each of the single batteries in the battery 12 is fixed to the carrying area 1411 by the adhesive layer 16, so as to be fixedly mounted on the tray 14.

It should be noted that, in order to ensure that each of the single batteries can be firmly bonded to the supporting region 1411, the bonding length between each of the single batteries and the supporting region 1411 should exceed half of the overall length of the single battery.

Of course, in other embodiments, the battery 12 may be fixedly mounted on the tray 14 by other means than adhesion, for example, a pressing plate spanning all the unit cells in the battery 12 along the second direction B is fixedly connected with the tray 14, which is not limited in particular.

It can be understood that, in the embodiment of the present application, after the battery 12 is fixedly mounted on the tray 14, the battery 12 and the tray 14 can be fixed as a whole, and can bear the load together, thereby improving the structural strength of the battery pack 1.

Optionally, in an embodiment of the present application, the tray 14 may further include a frame connected to the tray main body 141 except for being provided with the connector mounting plate 145, and a cover plate covering the frame and the connector mounting plate 145, the tray main body 141, the connector mounting plate 145, the frame and the cover plate are enclosed to form an accommodating cavity, and the battery 12 is disposed in the accommodating cavity, so that the battery 12 may be protected from all directions.

In the description of the present application, reference to the description of the terms "embodiment," "particular embodiment," "example," etc., means 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 application. 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 application 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 application, the scope of which is defined by the claims and their equivalents.

Claims

1. A tray for mounting a battery, the tray comprising a tray body and at least two load-bearing beams connected to the tray body;

the outer surfaces of the bearing areas and the buffer areas, which face the batteries respectively, have a height difference, a first buffer space is formed between the buffer areas and the batteries, and/or a second buffer space is formed between the bearing beams and the corresponding bearing areas.

2. The pallet of claim 1, wherein at least one of said load beams is provided with one or more cushioning structures on at least one side in said first direction, a plurality of said cushioning structures being spaced apart along said second direction;

wherein a third buffer space is formed between the buffer structure and the tray main body.

3. A pallet as claimed in claim 1 or 2, wherein said load beam comprises a first recess opening towards said pallet body and extending in said second direction, said second cushioning space being formed between the portion of said load beam provided with said first recess and the corresponding said load-bearing area.

4. A pallet as claimed in claim 2, wherein said cushioning structure is a support beam comprising a second groove opening towards said pallet body and extending in said first direction, said third cushioning space being formed between the portion of said support beam provided with said second groove and said pallet body.

5. The pallet according to claim 4, wherein the load beam includes a first groove opening toward the pallet body and extending in the second direction, and the portion of the load beam provided with the first groove and the corresponding load-bearing area form the second buffer space therebetween;

the bearing beam further comprises a pair of first flanges which are used for connecting the tray main body and extend along the second direction, and the pair of first flanges are distributed on two opposite sides of the first groove in the first direction at intervals along the first direction;

and/or the supporting beam further comprises a pair of second flanges which are used for connecting the tray main body and extend along the first direction, and the pair of second flanges are distributed on two opposite sides of the second groove in the second direction at intervals along the second direction.

6. The pallet of claim 5, wherein said load beam includes said pair of first flanges and said support beam includes said pair of second flanges;

the bearing beam is integrally formed with the supporting beam, an opening corresponding to the supporting beam is formed in a first flanging, close to the supporting beam, of the supporting beam, a pair of second flanging of the supporting beam is connected to two opposite sides of the opening corresponding to the first flanging, and a second groove of the supporting beam is communicated with a first groove of the supporting beam;

or the support beam and the bearing beam where the support beam is located are respectively formed separately and connected into a whole, the pair of second flanges of the support beam are connected to one side, away from the first groove, of the first flange of the bearing beam, which is adjacent to the support beam, and the first flange separates the first groove from the second groove of the support beam.

7. The tray of claim 1, further comprising a pair of limiting beams disposed on a side of the tray body away from the load-bearing beams, the pair of limiting beams being spaced apart along the second direction on opposite sides of the battery along the second direction.

8. The tray of claim 7, wherein the restraint beam extends in the first direction and has an internal cavity extending therethrough in the first direction.

9. A pallet as claimed in claim 7 or 8, wherein at least one of the parts of said limit beams corresponding to said load-bearing zone and the parts of said limit beams corresponding to said buffer zone is fixedly connected to said pallet body.

10. The tray of claim 9, wherein a third flange is arranged on a portion of the limiting beam corresponding to the bearing area, the third flange extends along the first direction, and the third flange is used for connecting a portion of the tray main body corresponding to the bearing area;

and/or a fourth flanging is arranged on the part, corresponding to the buffer area, of the limiting beam, and extends along the first direction, and the fourth flanging is used for being connected with the part, corresponding to the buffer area, of the tray main body.

11. The tray of claim 7, further comprising a connector mounting plate attached to the tray body, the connector mounting plate defining mounting holes for mounting connectors;

the connector mounting plate is arranged on one side of one limiting beam far away from the other limiting beam, and a power distribution mounting space is formed between the connector mounting plate and the adjacent limiting beam.

12. The pallet of claim 1, wherein said pallet further comprises a plurality of lifting lugs, one lifting lug being provided at each end of each said load beam in said second direction, said lifting lugs being located outwardly of a corresponding end of said pallet body in said second direction;

the lifting lugs are fixedly connected with the bearing beam or detachably connected with the bearing beam, and the lifting lugs are used for fixedly mounting the tray.

13. A battery pack comprising at least one battery and a tray as claimed in any one of claims 1 to 12, the at least one battery being mounted on the tray.

14. An electric vehicle characterized by comprising the battery pack according to claim 13.