Battery tray edge beam, battery tray, battery pack and vehicle

Abstract

The present invention provides an edge beam (23) of a battery tray (100), a battery tray (100), a battery pack (200), and a vehicle (2000). The edge beam (23) includes an edge beam body (231), the edge beam body (231) defines a cavity (2311), the edge beam body (231) has a partition (232), the partition (232) is located within the cavity (2311) and is connected between a top wall (233) and a bottom wall (234) of the cavity (2311) to partition the cavity (2311) into a plurality of sub-cavities (235), the plurality of sub-cavities (235) are sequentially arranged in the width direction of the edge beam (23), and the partition (232) is inclined in a direction away from the mounting groove (111) in a direction from the upper end to the lower end of the edge beam (23).

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to Chinese Patent Application No. "2022102495164" filed by BYD Company Limited on March 14, 2022, and entitled "Battery Tray Edge Beam, Battery Tray, Battery Pack and Vehicle."

[0002] The present application relates to the field of batteries, and in particular to edge beams for battery trays, battery trays, battery packs and vehicles. [Background technology]

[0003] In the related technology, a battery pack includes a battery tray, the battery tray includes a frame, and the frame includes an edge beam, and the edge beam has insufficient structural strength and poor stability, which makes the edge beam easily deformed, affecting the service life of the edge beam. When the edge beam is impacted, the impact force transmitted to the inside of the battery pack is large, which increases the risk of damaging cells in the battery pack and affects the safety of use of the battery pack. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems in the prior art. Therefore, one objective of the present application is to provide an edge beam of a battery tray, which has high structural strength, rigidity and stability, and reduces the risk of deformation of the edge beam, thereby extending the service life of the edge beam and the battery tray, and also reduces the magnitude of the impact force transmitted to the inside of the battery pack when the edge beam of the battery tray is impacted, thereby reducing the risk of damage to the cells in the battery pack, thereby improving the safety of the battery pack in use.

[0005] The present application further provides a battery tray.

[0006] The present application further provides a battery pack.

[0007] The present application further provides a vehicle.

[0008] The edge beam of a battery tray having a mounting groove for mounting cells according to the present application includes an edge beam body, the edge beam body defining a cavity, the edge beam body having a partition portion located within the cavity and connected between a top wall and a bottom wall of the cavity to divide the cavity into a plurality of sub-cavities, the plurality of sub-cavities being arranged sequentially in a width direction of the edge beam, and in a direction from the upper end to the lower end of the edge beam, the partition portion is inclined in a direction away from the mounting groove.

[0009] The edge beam of the battery tray according to the present application can improve the structural strength, rigidity and stability of the edge beam and reduce the risk of deformation of the edge beam, thereby extending the service life of the edge beam and the battery tray; and when one of the multiple sub-cavities that is away from the mounting groove is impacted, the impacted sub-cavity can absorb the impact force, thereby reducing the magnitude of the impact force transmitted to the inside of the battery pack and reducing the risk of damage to the cells in the battery pack, thereby improving the safety of the use of the battery pack.

[0010] In some examples of the present application, in the width direction of the edge beam, the cavity has a first side wall spaced apart from the mounting groove, the first side wall being connected between the top wall and bottom wall of the cavity and connected to the partition portion.

[0011] In some examples herein, the cavity has a second sidewall adjacent to the mounting groove, the second sidewall being connected between the top and bottom walls of the cavity and connected to the partition, and in a direction from the upper end to the lower end of the edge beam, the second sidewall is inclined in a direction adjacent to the mounting groove.

[0012] In some examples herein, the cross-sectional shape of each of the sub-cavities is triangular or trapezoidal.

[0013] In some examples herein, the plurality of sub-cavities include a first sub-cavity and a second sub-cavity, the first sub-cavity being located on a side of the second sub-cavity adjacent to the mounting groove, and the cross-sectional shape of the first sub-cavity being triangular or trapezoidal, and / or the cross-sectional shape of the second sub-cavity being trapezoidal.

[0014] In some examples herein, the triangle is an isosceles or equilateral triangle.

[0015] In some examples of the present application, an included angle between the bottom wall of the cavity and the partition is β, which satisfies the relationship 50°≦β≦70°.

[0016] In some examples of the present application, an included angle between the second side wall and the partition portion is α, and satisfies the relationship 50°≦α≦70°.

[0017] In some examples of the present application, a first connection portion extending toward inside the cavity is connected to a lower end of the first side wall, the first connection portion is located on a side of a bottom wall of the cavity facing a top wall of the cavity, the first side wall is connected to the bottom wall of the cavity and the partition portion via the first connection portion, and the first connection portion is fixedly connected to the bottom wall of the cavity, a second connection portion extending toward inside the cavity is connected to an upper end of the second side wall, the second connection portion is located on a side of the top wall of the cavity facing the bottom wall of the cavity, the second side wall is connected to the top wall of the cavity and the partition portion via the second connection portion, and the second connection portion is fixedly connected to the top wall of the cavity; The cavity top wall, the cavity bottom wall, the first side wall and the second side wall together define the cavity.

[0018] In some examples herein, the edge beam includes a support portion provided on a side of the edge beam body adjacent to the mounting groove and supporting the cell.

[0019] In some examples herein, the edge beam is constructed as a single piece.

[0020] The battery tray according to the present application includes the battery tray edge beams described above.

[0021] The battery tray according to the present application includes a tray bottom plate and a frame, the tray bottom plate includes a bottom plate main body and an extension portion, the bottom plate main body defines a mounting groove for mounting a cell, the extension portion extends along a peripheral edge of the bottom plate main body, the frame includes a first edge beam, a second edge beam, a third edge beam and a fourth edge beam, at least one of the first edge beam and the second edge beam is the edge beam, the first edge beam and the second edge beam are provided opposite to each other along a first direction, and the third edge beam and the fourth edge beam are are arranged opposite each other along a second direction, the first edge beam, the second edge beam, the third edge beam and the fourth edge beam are connected to form a mounting space, the bottom plate main body is mounted within the mounting space, in the height direction of the battery tray, the extension portion is located above the frame and is provided on the frame, the first edge beam and / or the second edge beam have a support portion that supports the tray bottom plate, one of the first direction and the second direction is the length direction of the battery tray, and the other is the width direction of the battery tray.

[0022] A battery pack according to the present application includes a cell and a battery tray, the battery tray being the above-mentioned battery tray having a mounting groove, and the cell being mounted in the mounting groove.

[0023] A vehicle according to the present application includes the above-described battery pack.

[0024] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. [Brief description of the drawings]

[0025] [Figure 1] FIG. 2 is an exploded view of a battery pack according to an embodiment of the present application. [Diagram 2] 1 is a cross-sectional view of a battery pack according to an embodiment of the present application. [Diagram 3] FIG. 3 is an enlarged view of part A in FIG. [Figure 4] FIG. 2 is a schematic diagram of an assembly of a battery tray and cells according to an embodiment of the present application. [Diagram 5] FIG. 2 is a schematic diagram of a battery tray according to an embodiment of the present application. [Figure 6] FIG. 2 is an exploded view of a battery tray according to an embodiment of the present application. [Figure 7] FIG. 2 is a schematic diagram of a tray bottom plate of a battery tray according to an embodiment of the present application. [Figure 8] FIG. 2 is a schematic diagram of a frame of a battery tray according to an embodiment of the present application. [Figure 9] FIG. 2 is a schematic diagram of an edge beam of a battery tray according to an embodiment of the present application. [Figure 10] FIG. 10 is an enlarged view of part B in FIG. [Figure 11] FIG. 2 is a partially enlarged view of an assembly of a battery tray and a cell according to an embodiment of the present application. [Figure 12] FIG. 2 is a cross-sectional view of an edge beam according to an embodiment of the present application. [Figure 13] 1 is a schematic diagram of a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the embodiments of the present application will be described in detail, and examples of the embodiments are shown in the drawings, and the same or similar reference numerals throughout indicate the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are only for interpreting the present application, and should not be understood as limiting the present application.

[0027] Hereinafter, with reference to Figures 1 to 12, we will explain the edge beams 23 of the battery tray 100 according to an embodiment of the present application, and the multiple edge beams 23 are configured as a frame 20 of the battery tray 100, and the battery tray 100 is applied to a battery pack 200.

[0028] As shown in Figures 1 to 12, the edge beam 23 in the embodiment of the present application includes an edge beam main body 231, which defines a cavity 2311, and the edge beam main body 231 has a partition portion 232, which is located within the cavity 2311 and connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, and further connected at an angle between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, so that the cavity 2311 can be divided into a plurality of sub-cavities 235, which are arranged in sequence in the width direction of the edge beam 23, and when the battery tray 100 is arranged in the arrangement manner in Figure 11, the width direction of the edge beam 23 refers to the left-right direction in Figure 11. In some embodiments, the width direction of the edge beam 23 may coincide with the width direction of the battery tray 100 or the width direction of the vehicle 2000. In other embodiments, the width direction of the edge beam 23 may coincide with the length direction of the battery tray 100 or the length direction of the vehicle 2000.

[0029] Since the partition portion 232 is connected at an incline between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, the partition portion 232 is supported between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, thereby improving the structural strength and rigidity of the edge beam main body 231, and also improving the structural stability of the edge beam main body 231, thereby reducing the risk of deformation of the edge beam 23, and thereby extending the service life of the edge beam 23 and the battery tray 100. Furthermore, by arranging the multiple sub-cavities 235 in sequence in the width direction of the edge beam 23, if one of the multiple sub-cavities 235 that is farther from the mounting groove 111 receives an impact, for example, if the sub-cavity 235 located on the left side in Figure 11 receives an impact, the sub-cavity 235 that received the impact can absorb the impact force, reducing the magnitude of the impact force transmitted to the inside of the battery pack 200 and reducing the risk of damage to the cells 201 in the battery pack 200, thereby improving the safety of using the battery pack 200.

[0030] As a result, the edge beam body 231 of the present application can improve the structural strength, rigidity and stability of the edge beam 23 and reduce the risk of deformation of the edge beam 23, thereby extending the service life of the edge beam 23 and the battery tray 100; and when one of the multiple sub-cavities 235 that is away from the mounting groove 111 is impacted, the impacted sub-cavity 235 can absorb the impact force, reducing the magnitude of the impact force transmitted to the inside of the battery pack 200 and reducing the risk of damage to the cells 201 or battery modules in the battery pack 200, thereby improving the safety of use of the battery pack 200.

[0031] In addition, as shown in Figures 11 and 12, when the edge beam 23 is arranged in the arrangement manner in Figure 11, in the direction from the upper end to the lower end of the edge beam 23, the partition portion 232 is inclined in a direction away from the mounting groove 111, and the partition portion 232 is inclined in a direction away from the mounting groove 111 of the battery tray 100, and in the direction from the top to the bottom of the battery tray 100, the partition portion 232 is inclined in an extending direction away from the mounting groove 111, and the partition portion 232 divides the cavity 2311 into two sub-cavities 235, and the two sub-cavities 235 are arranged in sequence in the width direction of the edge beam 23. In this way, the structural strength of the edge beam 23 can be improved, and the stability of the edge beam 23 can be improved, thereby improving the ability of the edge beam 23 to support the cell 201, and further reducing the risk of deformation of the frame 20.

[0032] In some embodiments of the present application, as shown in Figures 11 and 12, the cross-sectional shape of each sub-cavity 235 is triangular or trapezoidal, which can improve the structural stability of the edge beam 23 and further reduce the risk of deformation of the edge beam 23, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0033] In some embodiments of the present application, as shown in Figures 10 and 11, in the width direction of the edge beam 23, the cavity 2311 has a first side wall 236 located away from the mounting groove 111, and the first side wall 236 is connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, and is connected to the partition portion 232. In some alternative embodiments, as shown in FIG. 11 , a first connection portion 238 extending toward inside the cavity 2311 is connected to the lower end of the first side wall 236, the first connection portion 238 is located on the side of the bottom wall 234 of the cavity 2311 facing the top wall 233 of the cavity 2311, the first side wall 236 is connected to the bottom wall 234 of the cavity 2311 and the partition portion 232 via the first connection portion 238, and the first connection portion 238 is fixedly connected to the bottom wall 234 of the cavity 2311, for example, the first connection portion 238 is welded to the bottom wall 234 of the cavity 2311, and by doing so, the structural strength of the edge beam 23 can be further improved and the stability of the edge beam 23 can be further improved.

[0034] In some alternative embodiments, as shown in Figures 10 and 11, in the width direction of the edge beam 23, the cavity 2311 has a second side wall 237 adjacent to the mounting groove 111, the second side wall 237 is connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311 and is connected to the partition portion 232, and in the direction from the upper end to the lower end of the edge beam 23, the second side wall 237 is inclined in a direction adjacent to the mounting groove 111. In some alternative embodiments, as shown in FIG. 11 , a second connection portion 239 extending toward the inside of the cavity 2311 is connected to the upper end of the second side wall 237, and the second connection portion 239 is located on the side of the top wall 233 of the cavity 2311 facing the bottom wall 234 of the cavity 2311, and the second side wall 237 is connected to the top wall 233 and the partition portion 232 of the cavity 2311 via the second connection portion 239, and the second connection portion 239 is located on the side of the top wall 233 of the cavity 2311 facing the bottom wall 234 of the cavity 2311. The second connection portion 239 is fixedly connected to the top wall 233 of the cavity 2311, for example, the second connection portion 239 is welded to the top wall 233 of the cavity 2311, and the top wall 233 of the cavity 2311, the bottom wall 234, the first side wall 236 and the second side wall 237 of the cavity 2311 together define the cavity 2311, thereby further improving the structural strength of the edge beam 23 and further improving the stability of the edge beam 23.

[0035] In some alternative embodiments, as shown in FIG. 12, the included angle between the bottom wall 234 of the cavity 2311 and the partition 232 is β, which satisfies the relationship of 50°≦β≦70°. Furthermore, the included angle between the second side wall 237 and the partition 232 is α, which satisfies the relationship of 50°≦α≦70°. In this way, the structural stability of the edge beam 23 can be improved, and the risk of deformation of the edge beam 23 can be reduced, thereby extending the service life of the edge beam 23 and the battery tray 100.

[0036] The multiple sub-cavities 235 include a first sub-cavity 2351 and a second sub-cavity 2352, and in the width direction of the edge beam 23, the first sub-cavity 2351 is located on the side of the second sub-cavity 2352 close to the mounting groove 111, and the cross-sectional shape of the first sub-cavity 2351 is triangular or trapezoidal, and / or the cross-sectional shape of the second sub-cavity 2352 is trapezoidal.

[0037] Furthermore, according to one specific embodiment of the present application, the multiple sub-cavities 235 include a first sub-cavity 2351 and a second sub-cavity 2352, in the width direction of the edge beam 23, the first sub-cavity 2351 is located on the side of the second sub-cavity 2352 close to the mounting groove 111, the cross-sectional shape of the first sub-cavity 2351 is a triangle, and further, the triangle is an isosceles triangle or an equilateral triangle, and the bottom wall 234 of the cavity 2311 constitutes the bottom wall of the triangle, thereby further improving the structural stability of the edge beam 23 and further reducing the deformation risk of the edge beam 23, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0038] Furthermore, the included angle between the bottom wall 234 of the cavity 2311 and the partition portion 232 is configured as the base angle of a triangle, and the angle of the base angle is β, which satisfies the relationship 50°≦β≦70°, for example, β is a value such as 50°, 60°, and 70°. By doing so, the structural stability of the edge beam 23 can be further improved, and the deformation risk of the edge beam 23 can be further reduced, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0039] Furthermore, the apex angle of the triangle is α, which satisfies the relationship 50°≦α≦70°, for example, α is a value such as 50°, 60°, 70°, etc. By doing so, the cross-sectional shape of the first sub-cavity 2351 can be made into an equilateral triangle, which can further improve the structural stability of the edge beam 23 and further reduce the risk of deformation of the edge beam 23, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0040] According to another specific embodiment of the present application, as shown in FIG. 11 and FIG. 12, the plurality of sub-cavities 235 include a first sub-cavity 2351 and a second sub-cavity 2352, in the width direction of the edge beam 23, the first sub-cavity 2351 is located on the side of the second sub-cavity 2352 close to the mounting groove 111, and the cross-sectional shape of the first sub-cavity 2351 is set to be trapezoidal, and further, the bottom wall 234 of the cavity 2311 forms a trapezoidal bottom wall, and the bottom wall The included angle between 234 and the partition portion 232 is structured as a base angle of the trapezoid of the first sub-cavity 2351, and the angle of the base angle is β, which satisfies the relational expression of 50°≦β≦70°, for example, β satisfies values ​​such as 50°, 60°, 70°, etc., thereby further improving the structural stability of the edge beam 23 and further reducing the risk of deformation of the edge beam 23, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0041] Furthermore, as shown in FIG. 12, the included angle between the two legs of the trapezoid of the first sub-cavity 2351 is α, which satisfies the relationship 50°≦α≦70°, for example, α is a value such as 50°, 60°, 70°, etc. By doing so, the structural stability of the edge beam 23 can be further improved, and the deformation risk of the edge beam 23 can be further reduced, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0042] In some embodiments of the present application, as shown in FIG. 12 , the cross-sectional shape of the second sub-cavity 2352 is trapezoidal, the bottom wall 234 of the cavity 2311 constitutes the trapezoidal top wall of the second sub-cavity 2352, and the top wall 233 of the cavity 2311 constitutes the trapezoidal bottom wall of the second sub-cavity 2352, thereby further improving the structural stability of the edge beam 23 and further reducing the risk of deformation of the edge beam 23, thereby further extending the service life of the edge beam 23 and the battery tray 100.

[0043] In addition, the cross-section of the first sub-cavity 2351 refers to a cross-section in the width direction of the edge beam 23, i.e., a cross-section perpendicular to the length direction of the edge beam 23 of the first sub-cavity 2351, and the cross-section of the second sub-cavity 2352 refers to a cross-section in the width direction of the edge beam 23, i.e., a cross-section perpendicular to the length direction of the edge beam 23 of the second sub-cavity 2352.

[0044] In some embodiments of the present application, the edge beam 23 includes a support portion 22, which is provided on a side of the edge beam body 231 close to the mounting groove 111 and supports the cell 201. That is, the edge beam body 231 is connected to the support portion 22 extending toward the mounting groove 111, and the support portion 22 supports the cell 201 in the tray bottom plate 10 of the battery tray 100 and is supported by the lower surface of the tray bottom plate 10 to support the cell 201. The edge beam 23 bears most of the weight of the cell 201, and the tray bottom plate 10 of the battery tray 100 does not bear the weight of the cell 201 or bears only a small part of the weight of the cell 201, greatly reducing the load-bearing requirements of the tray bottom plate 10.

[0045] In some embodiments of the present application, the edge beam 23 is configured as an integrally molded product, and the edge beam body 231 and the support portion 22 may be understood to be an integrally molded product. Furthermore, the edge beam 23 may be manufactured from an aluminum material or a steel material, but the present application is not limited thereto, and the edge beam 23 may be manufactured from other metal materials that achieve the same effect as the steel material, for example, the edge beam 23 may be manufactured from a steel material, and the edge beam 23 may be roll-pressed from the steel material, or may be extruded from the steel material. By making the edge beam 23 an integrally molded product, the load-bearing capacity of the edge beam 23 can be improved and the risk of deformation of the edge beam 23 can be reduced.

[0046] The battery tray 100 according to the embodiment of the present application includes a plurality of edge beams 23 , which are connected to form a frame 20 .

[0047] 1 to 12, a battery tray 100 according to an embodiment of the present application includes a tray bottom plate 10 and a frame 20. The tray bottom plate 10 includes a bottom plate main body 11 and an extension portion 12, and the bottom plate main body 11 defines a mounting groove 111 for mounting a cell 201 or a battery module. In the present application, the mounting of the cell 201 in the mounting groove 111 is described as an example. Furthermore, a bottom wall 113 of the mounting groove has a pressure-receiving area 112 that supports the cell 201. The pressure-receiving area 112 refers to an area where an orthogonal projection of the bottom wall 113 of the mounting groove and an orthogonal projection of the cell 201 overlap in the height direction of the battery tray 100 when the cell 201 is mounted in the mounting groove 111. Alternatively, when the cell 201 is mounted in the mounting groove 111, the pressure-receiving area 112 refers to an area where an orthogonal projection of the bottom wall 113 of the mounting groove and an orthogonal projection of the cell 201 overlap in the height direction of the battery tray 100. The contact area may be understood to be a contact area between the cell 201 and the bottom wall 113 of the mounting groove, and the contact area includes an area where the cell 201 and the bottom wall 113 of the mounting groove are in direct contact or indirect contact. For example, when there is an adhesive or a cooling structure between the cell 201 and the bottom wall 113 of the mounting groove, the cell 201 and the bottom wall 113 of the mounting groove are in indirect contact, and when there is no other object between the cell 201 and the bottom wall 113 of the mounting groove, the cell 201 and the bottom wall 113 of the mounting groove are in direct contact, or the area where the weight of the cell 201 directly acts on the bottom wall 113 of the mounting groove may be understood to be the pressure-receiving area 112. In the height direction of the battery tray 100, the orthogonal projection of the bottom wall 113 of the mounting groove is the projection of the bottom wall 113 of the mounting groove onto a plane perpendicular to the height direction of the battery tray 100. In the height direction of the battery tray 100, the orthogonal projection of the cell 201 is the projection of the cell 201 onto a plane perpendicular to the height direction of the battery tray 100. As can be understood, when the battery tray 100 is mounted on the vehicle 2000, the height direction of the battery tray 100 may coincide with the height direction of the vehicle 2000.

[0048] When the cell 201 is installed in the battery tray 100, the cell 201 is located within the pressure-receiving area 112 of the mounting groove 111, and the extension portion 12 extends along the peripheral edge of the bottom plate main body 11, and further, the extension portion 12 is configured as a ring-shaped structure, specifically, as a closed ring-shaped structure.

[0049] The bottom plate body 11 is attached to the frame 20, and is fixedly attached to the frame 20. The bottom plate body 11 may be bonded to the frame 20 or attached to the frame 20 by bolts. The specific assembly method of the bottom plate body 11 and the frame 20 is not particularly limited and can be selected according to actual needs. Furthermore, the frame 20 defines an installation space 21, the bottom plate body 11 is installed in the installation space 21, the extension part 12 is located outside the installation space 21, is located above the frame 20 in the height direction of the battery tray 100, and is provided on the frame 20. The frame 20 has a support part 22 extending toward the installation space 21, and the support part 22 supports the tray bottom plate 10, further supports the bottom plate body 11, and supports the pressure-receiving area 112 of the tray bottom plate 10. As shown in Figures 6, 8 and 11, in this application, taking as an example a case in which the battery tray 100 is arranged along the vertical direction, after the bottom plate main body 11 is attached within the mounting space 21, the extension portion 12 is provided outside the mounting space 21 and is provided corresponding to the frame 20 in the vertical direction of the battery tray 100. Specifically, as shown in Figure 11, the extension portion 12 is located above the frame 20 and is provided opposite the frame 20, and can shield the entire upper surface of the frame 20 in the vertical direction of the battery tray 100.

[0050] As shown in FIG. 11 , when the cell 201 is installed in the mounting groove 111, the cell 201 is located in the pressure-receiving area 112, the support 22 supports the pressure-receiving area 112, the cell 201 is mounted on the frame 20, the frame 20 bears most of the weight of the cell 201, and the tray bottom plate 10 does not bear the weight of the cell 201 or bears only a small part of the weight of the cell 201, which greatly reduces the load-bearing requirement of the tray bottom plate 10; further, the tray bottom plate 10 is provided as an insulating member; further, the tray bottom plate 10 is provided as a non-metallic part; the tray bottom plate 10 can be made of a material with lower strength and thinner thickness, and the tray bottom plate 10 can be made of a lightweight non-metallic insulating composite material; For example, the lightweight non-metallic insulating composite material may be made of resin and glass fiber, and the resin may be epoxy resin or polyurethane, but the present application is not limited thereto, and the lightweight non-metallic insulating composite material may be made of other non-metallic composite materials that have the same effect as the resin and glass fiber, and in this way, the weight of the tray bottom plate 10 can be reduced, which is useful for the lightweight design of the battery tray 100 and the battery pack 200. In addition, the conventional tray bottom plate 10 is made of an aluminum material, and the present application manufactures the tray bottom plate 10 from a composite material, which is useful for reducing the manufacturing cost of the tray bottom plate 10 and the battery tray 100 and the battery pack 200. In addition, the tray bottom plate 10 manufactured from a non-metallic composite material has excellent electrical insulation performance, and when a serious bottoming accident occurs in the vehicle 2000, there is no high voltage risk such as arc discharge in the battery pack 200.

[0051] In some alternative embodiments, the tray bottom plate 10 is configured as a one-piece molded product and is press-molded with a lightweight non-metallic insulating composite material, and during press molding, after the resin melts, flows and hardens, the tray bottom plate 10 has good airtightness, and the mold molding can ensure that the tray bottom plate 10 has good flatness and dimensional accuracy, and ensure the sealing function of the tray bottom plate 10. The frame 20 may be formed by metal tailored blank welding, and after being formed by welding, it is only necessary to ensure the strength of the welded structure and the flatness of the required product, and the efficiency of tailored blank welding is high, improving the manufacturing efficiency of the battery tray 100, and the tray bottom plate 10 plays the role of sealing, and there is no need to grind and test the weld seam for airtightness, and there is no risk of poor sealing due to welding. The tray bottom plate 10 may be press-molded with a composite material, and the manufacturing efficiency of the tray bottom plate 10 is high and the mold precision is high, so that a high flatness can be obtained and the dimensional requirements of the cells 201 can be reduced.

[0052] Furthermore, the conventional battery tray 100 does not distinguish between the two functions of load-bearing and sealing in the product structure, and the overall load and sealing must be considered simultaneously when manufacturing the battery tray 100, resulting in low manufacturing efficiency and yield rate of the battery tray 100. In the present application, the two functions of load-bearing and sealing are distinguished, with the frame 20 mainly performing the load-bearing role and the tray bottom plate 10 mainly performing the sealing role for the battery tray 100, thereby improving the manufacturing efficiency and yield rate of the battery tray 100.

[0053] As a result, through cooperation between the tray bottom plate 10 and the frame 20, the frame 20 bears most of the weight of the cells 201, while the tray bottom plate 10 bears only a small portion of the weight of the cells 201 and performs the role of sealing, so that the thickness of the tray bottom plate 10 can be reduced and a tray bottom plate 10 made of a lightweight composite material can be used, which helps to design the battery tray 100 and battery pack 200 to be lightweight and reduce costs. In addition, after the tray bottom plate 10 and the frame 20 are assembled together, there is no risk of poor sealing of the battery tray 100 due to welding, and there is no need to grind the weld beads or perform airtightness inspection of the battery tray 100, improving the manufacturing efficiency of the battery tray 100.

[0054] 11 , in some embodiments of the present application, when the battery tray 100 is arranged in the arrangement manner in FIG 11 , in the height direction of the battery tray 100, the orthogonal projection of the support portion 22 and the orthogonal projection of the pressure-receiving area 112 have an overlapping area, which can ensure that the support portion 22 supports the cell 201 after the cell 201 is placed in the placement groove 111, and can ensure that the frame 20 mainly bears the weight of the cell 201. As can be understood, when the battery tray 100 is mounted on the vehicle 2000, the height direction of the battery tray 100 may be coincident with the height direction of the vehicle 2000.

[0055] In some embodiments of the present application, a pressure-receiving area 112 is formed on the bottom wall 113 of the mounting groove, and it may be understood that the pressure-receiving area 112 is provided on the bottom wall 113 of the mounting groove. As shown in FIG. 11, when the battery tray 100 is arranged in the arrangement manner in FIG. 11, the support part 22 is located below the bottom plate body 11 and supported by the bottom wall 113 of the mounting groove. In this way, it can be ensured that the support part 22 is supported below the pressure-receiving area 112, which can further ensure that the support part 22 supports the cell 201, and which can further ensure that the frame 20 mainly bears the weight of the cell 201, so that the installation position of the pressure-receiving area 112 can be rationalized.

[0056] In some embodiments of the present application, as shown in Figures 6 and 8, the frame 20 further includes a first edge beam, a second edge beam, a third edge beam and a fourth edge beam, the first edge beam and the second edge beam are arranged opposite each other along a first direction, at least one of the first edge beam and the second edge beam is the edge beam 23 in the above embodiment, and the third edge beam and the fourth edge beam are arranged opposite each other along a second direction. In addition, the first edge beam and the second edge beam may be configured as the edge beam 23 of the frame 20, the third edge beam may be configured as one of the front beam 24 and the rear beam 25 of the frame 20, and the fourth edge beam may be configured as the other of the front beam 24 and the rear beam 25. When the frame 20 is arranged in the arrangement manner in FIG. 8, the first edge beam and the second edge beam are spaced apart in the left-right direction in FIG. 8, and the front beam 24 and the rear beam 25 are both connected between the two edge beams 23. The first edge beam, the second edge beam, the third edge beam, and the fourth edge beam are connected to form the mounting space 21. The connection of the first edge beam, the second edge beam, the third edge beam, and the fourth edge beam includes direct connection and indirect connection. For example, the connection of the first edge beam and the third edge beam is described as an example, and the first edge beam and the third edge beam may be directly connected, or indirectly connected via another beam. The bottom plate body 11 is mounted in the mounting space 21, and in the height direction of the battery tray 100, the extension portion 12 is located above the frame 20 and is provided on the frame 20. One of the first direction and the second direction is the length direction of the battery tray 100, and the other of the first direction and the second direction is the width direction of the battery tray 100. As can be understood, when the battery tray 100 is mounted on the vehicle 2000, the width direction of the battery tray 100 may coincide with the width direction of the vehicle 2000, and the length direction of the battery tray 100 may coincide with the length direction of the vehicle 2000. Naturally, the width direction of the battery tray 100 may coincide with the length direction of the vehicle 2000, and the length direction of the battery tray 100 may coincide with the width direction of the vehicle 2000.

[0057] As shown in Figure 6, when the battery tray 100 is arranged in the direction shown in Figure 6, the first direction may refer to the left-right direction in Figure 6, and the second direction may refer to the front-to-back direction in Figure 6, and naturally, the first direction may refer to the front-to-back direction in Figure 6 and the second direction may refer to the left-to-right direction in Figure 6, and this application will explain as an example that the left-to-right direction in Figure 6 is the first direction and the front-to-back direction in Figure 6 is the second direction. The first edge beam and / or the second edge beam are provided with support portions 22, which support the tray bottom plate 10. For example, the first edge beam and the second edge beam are both provided with support portions 22. When the cells 201 extend along the left-right direction in FIG. 8, providing the support portions 22 on the first edge beam and / or the second edge beam can ensure that each cell 201 is supported by the support portions 22, and can further ensure that the support portions 22 support the cells 201, and can ensure that the frame 20 mainly bears the weight of the cells 201, thereby making the installation position of the support portions 22 rational.

[0058] In some embodiments of the present application, as shown in FIG. 8 , the frame 20 further includes a support beam 26, which is connected between two edge beams 23 (i.e., the support beam 26 is connected between the first edge beam and the second edge beam), or between the front beam 24 and the rear beam 25, or between the front beam 24 and the edge beam 23, or between the rear beam 25 and the edge beam 23, thereby improving the structural strength of the frame 20, and thereby improving the structural strength of the battery tray 100.

[0059] In some embodiments of the present application, as shown in Figures 5 and 6, the battery tray 100 further includes an expansion beam 27, which is provided on the side of the tray bottom plate 10 away from the frame 20. When the battery tray 100 is arranged in the manner shown in Figures 5 and 6, the expansion beam 27 is provided above the tray bottom plate 10 and attached to the support beam 26 by a bolt. After the cell 201 is installed in the mounting groove 111, when the cell 201 expands, the expansion beam 27 can restrict the cell 201, thereby improving the safety of the cell 201 in use.

[0060] In some alternative embodiments, a plurality of support beams 26 are provided, and the plurality of support beams 26 are arranged spaced apart in sequence along the length of the edge beam 23, the length of the edge beam 23 referring to the front-to-back direction in FIG. 6; a plurality of expansion beams 27 are provided, and the plurality of expansion beams 27 are arranged spaced apart in sequence along the length of the edge beam 23, and the plurality of expansion beams 27 and the plurality of support beams 26 are arranged in one-to-one correspondence, and one expansion beam 27 is attached to one support beam 26 by a bolt, thereby allowing the expansion beam 27 to be firmly attached to the frame 20.

[0061] In some embodiments of the present application, as shown in FIG. 11, the support portion 22 may be provided adjacent to the lower end of the edge beam 23, and the support portion 22 may be provided adjacent to the end of the edge beam 23 that is away from the tray bottom plate 10, and further, the support portion 22 of the first edge beam is provided adjacent to the lower end of the first edge beam, and / or the support portion 22 of the second edge beam is provided adjacent to the lower end of the second edge beam, for example, the support portion 22 of the first edge beam is provided adjacent to the lower end of the first edge beam, and the support portion 22 of the second edge beam is provided adjacent to the lower end of the second edge beam. After the bottom plate body 11 is installed in the installation space 21, by bringing the support portion 22 close to the end of the edge beam 23 that is away from the tray bottom plate 10, it can be ensured that the support portion 22 is supported below the bottom plate body 11, and it can also be ensured that the bottom plate body 11 is installed in the installation space 21.

[0062] In some embodiments of the present application, as shown in Fig. 5 to Fig. 7 and Fig. 11, when the battery tray 100 is arranged in the arrangement manner in Fig. 11, the upper end of the mounting groove 111 is opened, and the cell 201 can be inserted into the mounting groove 111 from the open end of the mounting groove 111. In addition, the extension portion 12 is extended along the open end of the mounting groove 111, and as shown in Fig. 11, the extension portion 12 is connected to the upper end of the bottom plate body 11, and after the bottom plate body 11 is mounted in the mounting space 21, the extension portion 12 can be provided outside the mounting groove 111, and it can be ensured that the extension portion 12 is provided corresponding to the frame 20 in the up-down direction of the battery tray 100, and thus the sealing of the battery tray 100 can be ensured.

[0063] In some embodiments of the present application, as shown in Figures 8, 10 and 11, the surface of the support portion 22 adjacent to the tray bottom plate 10 is configured as a flat surface, i.e., as shown in Figure 11, the upper surface of the support portion 22 is provided as a flat surface. In this way, a support area between the support portion 22 and the bottom plate main body 11 can be secured, and the support portion 22 can better support the cell 201.

[0064] In some embodiments of the present application, the support 22 is located below the bottom plate body 11 and is fixedly connected to the bottom plate body 11. Furthermore, the tray bottom plate 10 is glued to the frame 20. Furthermore, the tray bottom plate 10 and the frame 20 are glued together by injecting an adhesive (e.g., a structural adhesive) between them, and the thickness of the adhesive is controlled to absorb the dimensional tolerance of the frame 20. In addition, the tray bottom plate 10 has good flatness and can absorb the tolerance by the adhesive, so that the manufacturing requirements of the tray bottom plate 10 and the frame 20 can be reduced. In addition, when the conventional tray bottom plate 10 and the frame 20 are welded together, the tray bottom plate 10 is easily deformed during welding, which increases the dimensional requirements for the cells 201 during the subsequent assembly of the battery pack 200, and affects the assembly efficiency of the battery pack 200. In the present application, by gluing the tray bottom plate 10 and the frame 20 together, welding between the tray bottom plate 10 and the frame 20 can be avoided, deformation of the tray bottom plate 10 can be prevented, the dimensional requirements for the cells 201 during the subsequent assembly of the battery pack 200 can be reduced, and the assembly efficiency of the battery pack 200 can be improved.

[0065] In some embodiments of the present application, the tray bottom plate 10 is constructed as a one-piece molded product and is press-molded from a lightweight composite material. During the press molding, after the resin melts, flows, and hardens, the tray bottom plate 10 has good airtightness, and the mold molding ensures that the tray bottom plate 10 has good flatness and dimensional accuracy, and the sealing function of the tray bottom plate 10 can be ensured.

[0066] In some embodiments of the present application, the frame 20 is configured as a metal part and may be formed of an aluminum material or may be manufactured of a steel material, but the present application is not limited thereto, and the frame 20 may be manufactured of other metal materials that achieve the same effect as the steel material, for example, the frame 20 is formed of a steel material, and the frame 20 may be roll-pressed or extruded from a steel material. By making the frame 20 a metal part, the load-bearing capacity of the frame 20 can be improved and the risk of deformation of the frame 20 can be reduced.

[0067] In some alternative embodiments, as shown in Figures 10 and 11, a support portion 22 extending toward the accommodating groove 111 is connected to the lower end of the second side wall 237, and the support portion 22 is connected to the bottom wall 234 of the cavity 2311. Furthermore, as shown in FIG. 12, in the width direction of the edge beam 23, the bottom wall 234 of the cavity 2311 has a structural reinforcement portion 2341 extending below the support portion 22, and the structural reinforcement portion 2341 is connected to the end portion of the support portion 22 close to the tray bottom plate 10, and the end portion of the structural reinforcement portion 2341 close to the mounting space 21 (or the mounting groove 111) may be understood to extend below the support portion 22, and the end portion of the structural reinforcement portion 2341 close to the mounting space 21 (or the mounting groove 111) is connected to the end portion of the support portion 22 close to the mounting space 21 (or the mounting groove 111), and further, the structural reinforcement portion 2341 is provided with a protrusion structure 2391 protruding toward the support portion 22, and the protrusion structure 2391 is connected to the support portion 22, and by doing so, the structural strength of the edge beam 23 can be further improved, and the stability of the edge beam 23 can be further improved.

[0068] In some alternative embodiments, the structural reinforcement portion 2341 is provided with a plurality of protrusion structures 2391, which are arranged in sequence in the width direction of the edge beam 23, and at least one of the plurality of protrusion structures 2391 is located below the pressure-receiving area 112, so that the protrusion structure 2391 can support the cell 201, thereby further improving the load-bearing capacity of the frame 20 and reducing the risk of deformation of the support portion 22.

[0069] In some embodiments of the present application, as shown in Figures 5 and 6, a lug structure 30 is connected to a frame 20, mounting holes are provided in the lug structure 30, and the lug structure 30 is attached to the vehicle 2000 by a fastener (e.g., a bolt), thereby achieving the purpose of attaching the battery pack 200 to the vehicle 2000.

[0070] 1 to 11, a battery pack 200 according to an embodiment of the present application includes a cell 201, a battery tray 100, and a lid 40. The battery tray 100 is the battery tray 100 of the above embodiment, and the lid 40 and the tray bottom plate 10 together define a mounting cavity 41 in which the cell 201 is mounted, and the lid 40 is connected to the frame 20. In some alternative embodiments, the lid 40 is disposed over an open end of the mounting groove 111 to define the mounting cavity 41, the extension 12 is interposed between the lid 40 and the frame 20, and the lid 40, the tray bottom plate 10, and the frame 20 can be assembled together by passing a bolt through the lid 40, the extension 12, and the frame 20. In some alternative embodiments, a sealant 203 (e.g., a seal ring) is interposed between the extension 12 and the lid 40, and the sealant 203 can seal the mounting cavity 41, and the lid 40 and the tray bottom plate 10 define a sealed insulating cavity (i.e., the mounting cavity 41), and after the cell 201 is placed in the mounting cavity 41, the cell 201 and the frame 20 can be completely isolated, the cell 201 is in a completely insulated environment, and the battery pack 200 has no risk of leakage current. In some embodiments of the present application, as shown in FIG. 1 , the battery pack 200 may further include a pressure plate 202, the pressure plate 202 being configured as a closed annular structure, the lid 40, the sealing material 203 and the extension 12 being interposed between the pressure plate 202 and the frame 20, and the pressure plate 202, the lid 40, the tray bottom plate 10 and the frame 20 can be assembled together by passing bolts through the pressure plate 202, the lid 40, the extension 12 and the frame 20, and the pressure plate 202 can uniformly apply pressure to the entire sealing material 203, ensuring that the mounting cavity 41 is sealed reliably. In some other embodiments, the battery pack includes a cell, a lid, and a battery tray, the battery tray includes a tray bottom plate and a plurality of edge beams, at least one of which is the edge beam of the above embodiment, the plurality of edge beams are connected to form a frame, the frame defines a mounting groove together with the tray bottom plate for mounting the cell, and the lid is connected to the frame to form a mounting cavity for mounting the cell. The tray bottom plate is a flat plate structure.

[0071] As shown in FIG. 13 , a vehicle 2000 according to an embodiment of the present application includes the battery pack 200 according to the above embodiment, and the battery pack 200 is attached to the vehicle 2000 to supply electric energy to the vehicle 2000. The frame 20 of the battery pack 200 mainly bears the weight of the cells 201, and the tray bottom plate 10 bears only a small portion of the weight of the cells 201 and mainly plays a sealing role. Therefore, it is only necessary to use a tray bottom plate 10 made of a lightweight composite material, which is useful for lightweight design and cost reduction of the battery tray 100, battery pack 200, and vehicle 2000. In addition, after the tray bottom plate 10 and the frame 20 are assembled together, there is no risk of poor sealing of the battery tray 100 due to welding, and there is no need to polish the weld beads and inspect the airtightness of the battery tray 100, which improves the manufacturing efficiency of the battery tray 100 and the vehicle 2000. In addition, the tray bottom plate 10 made of a composite material has excellent electrical insulation performance, and in the event of a serious bottoming-out accident in the vehicle 2000, there is no risk of high voltage such as arc discharge in the battery pack 200, thereby improving the safety of the vehicle 2000.

[0072] In the description of this specification, a description that refers to the terms "one embodiment," "some embodiments," "exemplary embodiments," "examples," "particular examples," or "some examples" means that the specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the description of this specification, exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples as appropriate.

[0073] Although embodiments of the present application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and objectives of the present application, and that the scope of the present application is limited by the claims and their equivalents.

Claims

1. An edge beam (23) of a battery tray (100) having a mounting groove (111) for mounting a cell (201), 1. An edge beam (23) for a battery tray (100), comprising: an edge beam body (231), the edge beam body (231) defining a cavity (2311), the edge beam body (231) having a partition portion (232) located within the cavity (2311), the partition portion (232) being connected between a top wall (233) and a bottom wall (234) of the cavity (2311) to divide the cavity (2311) into a plurality of sub-cavities (235), the plurality of sub-cavities (235) being arranged sequentially in a width direction of the edge beam (23), and the partition portion (232) being inclined in a direction away from the mounting groove (111) in a direction from an upper end to a lower end of the edge beam (23).

2. The edge beam (23) of the battery tray (100) of claim 1, characterized in that in the width direction of the edge beam (23), the cavity (2311) has a first side wall (236) spaced apart from the mounting groove (111), the first side wall (236) is connected between the top wall (233) and the bottom wall (234) of the cavity (2311), and the first side wall (236) is connected to the partition portion (232).

3. The edge beam (23) of the battery tray (100) of claim 2, characterized in that the cavity (2311) has a second side wall (237) adjacent to the mounting groove (111), the second side wall (237) is connected between the top wall (233) and the bottom wall (234) of the cavity (2311), and the second side wall (237) is connected to the partition portion (232), and in the direction from the upper end to the lower end of the edge beam (23), the second side wall (237) is inclined in a direction adjacent to the mounting groove (111).

4. The edge beam (23) of the battery tray (100) according to any one of claims 1 to 3, characterized in that the cross-sectional shape of each of the sub-cavities (235) is triangular or trapezoidal.

5. The edge beam (23) of the battery tray (100) of any one of claims 1 to 4, characterized in that the plurality of sub-cavities (235) include a first sub-cavity (2351) and a second sub-cavity (2352), the first sub-cavity (2351) is located on a side of the second sub-cavity (2352) adjacent to the mounting groove (111), and the cross-sectional shape of the first sub-cavity (2351) is triangular or trapezoidal, and / or the cross-sectional shape of the second sub-cavity (2352) is trapezoidal.

6. The edge beam (23) of the battery tray (100) according to claim 4, characterized in that the triangle is an isosceles triangle or an equilateral triangle.

7. The edge beam (23) of the battery tray (100) according to any one of claims 1 to 6, characterized in that the included angle between the bottom wall (234) of the cavity (2311) and the partition portion (232) is β, which satisfies the relationship 50°≦β≦70°.

8. The edge beam (23) of the battery tray (100) according to claim 3, characterized in that an included angle between the second side wall (237) and the partition portion (232) is α, which satisfies the relationship 50°≦α≦70°.

9. A first connection portion (238) extending toward the inside of the cavity (2311) is connected to the lower end of the first side wall (236), and the first connection portion (238) is located on the side of the bottom wall (234) of the cavity (2311) facing the top wall (233) of the cavity (2311), and the first side wall (236) is connected to the bottom wall (234) of the cavity (2311) and the partition portion (232) via the first connection portion (238), and the first connection portion (238) is fixedly connected to the bottom wall (234) of the cavity (2311); A second connection portion (239) extending toward the inside of the cavity (2311) is connected to the upper end of the second side wall (237), and the second connection portion (239) is located on the side of the top wall (233) of the cavity (2311) facing the bottom wall (234) of the cavity (2311), and the second side wall (237) is connected to the top wall (233) of the cavity (2311) and the partition portion (232) via the second connection portion (239), and the second connection portion (239) is fixedly connected to the top wall (233) of the cavity (2311); The edge beam (23) of a battery tray (100) of claim 3, characterized in that the top wall (233) of the cavity (2311), the bottom wall (234) of the cavity (2311), the first side wall (236), and the second side wall (237) together define the cavity (2311).

10. The edge beam (23) of the battery tray (100) of any one of claims 1 to 9, characterized in that the edge beam (23) includes a support portion (22), which is provided on a side of the edge beam body (231) adjacent to the mounting groove (111) and supports the cell (201).

11. The edge beam (23) of the battery tray (100) according to any one of claims 1 to 10, characterized in that the edge beam (23) is configured as a single piece.

12. A battery tray (100) comprising an edge beam (23) of the battery tray (100) according to any one of claims 1 to 11.

13. The tray includes a bottom plate (10) and a frame (20), The tray bottom plate (10) includes a bottom plate body (11) and an extension portion (12), the bottom plate body (11) defines a mounting groove (111) for mounting a cell (201), and the extension portion (12) extends along the periphery of the bottom plate body (11); The frame (20) includes a first edge beam (23), a second edge beam (23), a third edge beam (23), and a fourth edge beam (23), at least one of the first edge beam (23) and the second edge beam (23) is the edge beam (23), the first edge beam (23) and the second edge beam (23) are arranged opposite each other along a first direction, the third edge beam (23) and the fourth edge beam (23) are arranged opposite each other along a second direction, and the first edge beam (23), the second edge beam (23), the third edge beam (23), and the fourth edge beam (23) are arranged opposite each other along a second direction.

13. The battery tray (100) according to claim 12, characterized in that the frame (20) and the frame (20) are connected to each other to form an installation space (21), the bottom plate main body (11) is installed within the installation space (21), in the height direction of the battery tray (100), the extension portion (12) is located above the frame (20) and is provided on the frame (20), the first edge beam (23) and / or the second edge beam (23) have a support portion (22) that supports the tray bottom plate (10), and one of the first direction and the second direction is the length direction of the battery tray (100), and the other is the width direction of the battery tray (100).

14. A battery pack (200) comprising a cell (201) and the battery tray (100) according to claim 12 or 13, the battery tray (100) having a mounting groove (111), and the cell (201) being mounted in the mounting groove (111).

15. A vehicle (2000) comprising the battery pack (200) of claim 14.

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