Battery tray, battery pack and vehicle

Abstract

The present invention relates to a battery tray (100), a battery pack (200), and a vehicle (2000), wherein the battery tray (100) includes a tray bottom plate (10) and a frame (20), the tray bottom plate (10) includes a bottom plate body (11) defining a mounting groove (111) for mounting a battery core (201), a bottom wall of the mounting groove (111) has a pressure-receiving area (112) for supporting the battery core (201), the bottom plate body (11) is attached to a frame (20), the frame (20) has a support portion (22) for supporting the bottom plate body (11), and in the height direction of the battery tray (100), there is an overlapping area between the orthogonal projection of the support portion (22) and the orthogonal projection of the pressure-receiving area (112).

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application is filed based on and claims priority to Chinese patent application having application number 2022205540646 and filing date March 14, 2022, Chinese patent application having application number 2022205635773 and filing date March 14, 2022, Chinese patent application having application number 2022205634874 and filing date March 14, 2022, and Chinese patent application having application number 2022205635788 and filing date March 14, 2022, the entire contents of which are incorporated herein by reference.

[0002] This application relates to the field of batteries, and more particularly to battery trays, battery packs and vehicles. [Background technology]

[0003] In the related art, a battery pack includes a battery tray, the battery tray includes a frame and a tray bottom plate, the frame and the tray bottom plate are welded together to form a battery tray, the tray bottom plate is configured as a plate-like structure and supports a battery core, and since the tray bottom plate mainly supports the weight of the battery core, the tray bottom plate is thick, which is disadvantageous to the lightweight design and cost reduction of the battery pack. Summary of the Invention [Means for solving the problem]

[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 a battery tray, in which the frame of the battery tray supports most of the weight of the battery core, and the tray bottom plate supports only a small part of the weight of the battery core, thereby reducing the thickness of the tray bottom plate, which is favorable for the lightweight design and cost reduction of the battery tray and the battery pack.

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

[0006] The present application further provides a vehicle.

[0007] The battery tray of the present application includes a tray bottom plate and a frame, the tray bottom plate includes a bottom plate main body defining a mounting groove for placing a battery core, a bottom wall of the mounting groove has a pressure-receiving area for supporting the battery core, the bottom plate main body is attached to the frame, the frame has a support part for supporting the bottom plate main body, and in the height direction of the battery tray, an orthogonal projection of the support part and an orthogonal projection of the pressure-receiving area have an overlapping area.

[0008] According to the battery tray of the present application, through cooperation between the tray bottom plate and the frame, the frame mainly supports most of the weight of the battery core, and the tray bottom plate supports only a small portion of the weight of the battery core, so that the thickness of the tray bottom plate can be reduced, which is advantageous for lightweight design and cost reduction of the battery tray and battery pack.

[0009] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. [Brief description of the drawings]

[0010] [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 assembly diagram of a battery tray and a battery core 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 a side 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 battery core according to an embodiment of the present application. [Figure 12] 13 is a schematic view of the tray bottom plate of the battery tray according to the embodiment of the present application, viewed from a different angle. FIG. [Figure 13] FIG. 13 is an enlarged view of part C in FIG. [Figure 14] FIG. 2 is a cross-sectional view of a battery tray according to an embodiment of the present application. [Figure 15] FIG. 15 is an enlarged view of a portion D in FIG. [Figure 16] 1 is a schematic diagram of a battery pack according to an embodiment of the present application. [Figure 17] FIG. 2 is a schematic diagram of a tray bottom plate according to one embodiment of the present application. [Figure 18] FIG. 18 is another schematic view of the tray bottom plate shown in FIG. [Figure 19] FIG. 18 is an enlarged view of a portion E circled in FIG. [Figure 20] 18 is yet another schematic view of the tray bottom plate shown in FIG. 17. [Figure 21] FIG. 21 is an enlarged view of a portion F circled in FIG. 20. [Figure 22] FIG. 21 is a partial schematic view of the tray bottom plate shown in FIG. 20. [Diagram 23] FIG. 2 is a cross-sectional view of a battery tray according to an embodiment of the present application. [Figure 24] FIG. 24 is an enlarged view of a portion G circled in FIG. 23. [Diagram 25] FIG. 2 is an exploded view of a battery pack according to an embodiment of the present application. [Figure 26] FIG. 26 is a schematic assembly diagram of the tray bottom plate and the battery shown in FIG. 25. [Figure 27] FIG. 26 is a schematic diagram of the frame shown in FIG. 25. [Figure 28] 1 is a schematic diagram of a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments of the present application will be described in detail. The above-mentioned examples 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.

[0012] A battery tray 100 according to an embodiment of the present invention will be described below with reference to Figures 1 to 15. The battery tray 100 is applied to a battery pack 200.

[0013] 1 to 11, 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 body 11, which may further include an extension portion 12, and the bottom plate body 11 defines a mounting groove 111 for mounting a battery core 201 or a battery module. In the present application, a case in which the battery core 201 is mounted in the mounting groove 111 will be described as an example. The bottom wall 113 of the mounting groove has a pressure-receiving area 112 for supporting the battery core 201. The pressure-receiving area 112 refers to an area where the orthogonal projection of the bottom wall 113 of the mounting groove and the orthogonal projection of the battery core 201 overlap in the height direction of the battery tray 100 when the battery core 201 is mounted in the mounting groove 111. Alternatively, the pressure-receiving area 112 may be understood as a contact area between the battery core 201 and the bottom wall 113 of the mounting groove when the battery core 201 is mounted in the mounting groove 111. The contact area is the area where the orthogonal projection of the bottom wall 113 of the mounting groove overlaps with the orthogonal projection of the battery core 201 when the battery core 201 is mounted in the mounting groove 111. The pressure-receiving area 112 may include an area where the battery core 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 battery core 201 and the bottom wall 113 of the mounting groove, the battery core 201 and the bottom wall 113 of the mounting groove are in indirect contact, and when there is no other object between the battery core 201 and the bottom wall 113 of the mounting groove, the battery core 201 and the bottom wall 113 of the mounting groove are in direct contact, or the weight of the battery core 201 directly acts on the bottom wall 113 of the mounting groove. 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 in 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 battery core 201 is the projection of the battery core 201 in a plane perpendicular to the height direction of the battery tray 100.

[0014] When the battery core 201 is installed in the battery tray 100, the battery core 201 is located in the pressure-receiving area 112 of the mounting groove 111, and the extension portion 12 extends along the periphery of the bottom plate body 11. In some preferred embodiments, the extension portion 12 is configured as a ring structure, specifically, the extension portion 12 is configured as a closed ring structure.

[0015] The bottom plate body 11 is attached to the frame 20, and further fixedly attached to the frame 20. The bottom plate body 11 may be glued 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 specifically limited and may be selected according to actual needs. In some preferred embodiments, the frame 20 defines an installation space 21, the bottom plate body 11 is mounted in the installation space 21, and the extension portion 12 is located outside 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 frame 20 has a support portion 22, which may extend toward the installation space 21; the support portion 22 supports the bottom plate body 11; in the height direction of the battery tray 100, when the battery tray 100 is arranged in the arrangement manner shown in FIG. 11, the height direction of the battery tray 100 refers to the up-down 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; and after the battery core 201 is placed in the mounting groove 111, it can be ensured that the support portion 22 supports the battery core 201, and the frame 20 mainly supports the weight of the battery core 201. As can be understood, when the battery tray 100 is attached to the vehicle 2000, the height direction of the battery tray 100 may coincide with the height direction of the vehicle 2000.

[0016] In the present application, a description will be given of an example in which the battery tray 100 is arranged along the vertical direction, as shown in Figures 6, 8, and 11. 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 in the vertical direction of the battery tray 100, the extension portion 12 is provided corresponding to the frame 20, and specifically, as shown in Figure 11, the extension portion 12 is provided above the frame 20 and positioned on the opposite side to the frame 20, and in the vertical direction of the battery tray 100, the extension portion 12 can cover the entire upper surface of the frame 20.

[0017] Here, as shown in Fig. 11, when the battery core 201 is mounted in the mounting groove 111, the battery core 201 is located in the pressure-receiving area 112, the support 22 supports the pressure-receiving area 112, the battery core 201 is mounted on the frame 20, the frame 20 bears most of the weight of the battery core 201, and the tray bottom plate 10 bears almost no weight of the battery core 201 or only a small part of the weight of the battery core 201, so that the load-bearing demand of the tray bottom plate 10 can be greatly reduced, and the tray bottom plate 10 can be made of a material with lower strength and smaller thickness. In some preferred embodiments, the tray bottom plate 10 is provided as an insulating part. In some preferred embodiments, the tray bottom plate 10 is provided as a non-metallic part, and a tray bottom plate 10 made of a lightweight insulating composite material may be used. For example, the lightweight 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. The lightweight composite material may be made of other composite materials that play the same role as the resin and glass fiber. In this way, the weight of the tray bottom plate 10 can be reduced, which is advantageous 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 aluminum material, and the present application manufactures the tray bottom plate 10 from an insulating composite material, which can reduce the production cost of the tray bottom plate 10, which is advantageous for reducing the production cost of the battery tray 100 and the battery pack 200. In addition, the tray bottom plate 10 made of a non-metallic 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.

[0018] In some preferred embodiments, the tray bottom plate 10 is configured as an integral molding and is press-molded with a lightweight insulating composite material, during the press molding, the tray bottom plate 10 forms a high airtightness after the resin melts, flows and hardens, and the tray bottom plate 10 has good flatness and dimensional accuracy through die molding, which can 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 required flatness of the product, which has a high efficiency of tailored blank welding, which improves the production efficiency of the battery tray 100, and the tray bottom plate 10 does not need to grind the welded seam and perform airtightness inspection, and there is no risk of poor sealing caused by welding. The tray bottom plate 10 may be press-molded with a composite material, which has a high production efficiency of the tray bottom plate 10 and a high die precision, which can obtain a high flatness and reduce the dimensional requirements of the battery core 201.

[0019] Furthermore, the conventional battery tray 100 does not distinguish between the two functions of load receiving 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 receiving and sealing are distinguished, with the frame 20 mainly performing the role of load receiving and the tray bottom plate 10 mainly performing the role of sealing the battery tray 100, thereby improving the manufacturing efficiency and yield rate of the battery tray 100.

[0020] As a result, through cooperation between the tray bottom plate 10 and the frame 20, the frame 20 supports most of the weight of the battery core 201, and the tray bottom plate 10 supports almost no weight of the battery core 201 or only a small portion of the weight of the battery core 201, and the tray bottom plate 10 mainly plays a sealing role, 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 is advantageous for the lightweight design and cost reduction of the battery tray 100 and the battery pack 200. 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 and perform airtightness inspection of the battery tray 100, which improves the production efficiency of the battery tray 100.

[0021] In some embodiments of the present application, it may be understood that a pressure-receiving area 112 is formed on the bottom wall 113 of the mounting groove, and 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 manner shown in FIG. 11, the support portion 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 portion 22 is supported below the pressure-receiving area 112, which can further ensure that the support portion 22 supports the battery core 201, and which can further ensure that the frame 20 supports most of the weight of the battery core 201, so that the pressure-receiving area 112 can be arranged in a reasonable position.

[0022] In some embodiments of the present application, as shown in Figures 6 and 8, the frame 20 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 being disposed on opposite sides along a first direction, and the third edge beam and the fourth edge beam being disposed on opposite sides along a second direction. Note that the first edge beam and the second edge beam are configured as side edge beams 23 of the frame 20, the first edge beam being one side edge beam 23, the second edge beam being the other side edge beam 23, the third edge beam being one of the front end beam 24 and the rear end beam 25 of the frame 20, and the fourth edge beam being the other of the front end beam 24 and the rear end beam 25. When the frame 20 is arranged in the manner shown in Figure 8, the first edge beam and the second edge beam are spaced apart in the left-right direction in Figure 8. The front end beam 24 and the rear end beam 25 are each connected between the two side edge beams 23, and the first edge beam, the second edge beam, the third edge beam, and the fourth edge beam are connected to form an installation space 21. The connections of the first edge beam, the second edge beam, the third edge beam, and the fourth edge beam include direct connection and indirect connection. For example, in the case of the connection between the first edge beam and the third edge beam, the first edge beam and the third edge beam may be directly connected, or may be indirectly connected via another beam. One of the first direction and the second direction is the longitudinal 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 installed in the vehicle 2000, the width direction of the battery tray 100 may coincide with the width direction of the vehicle 2000, and the longitudinal direction of the battery tray 100 may coincide with the longitudinal direction of the vehicle 2000. Naturally, the width direction of the battery tray 100 may coincide with the longitudinal direction of the vehicle 2000, and the longitudinal direction of the battery tray 100 may coincide with the width direction of the vehicle 2000.

[0023] 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. 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 in this application, the left-to-right direction in Figure 6 is described as the first direction, and the front-to-back direction in Figure 6 is described as the second direction. The first edge beam and / or the second edge beam are provided with a support portion 22. For example, the first edge beam and the second edge beam are both provided with a support portion 22. When the battery core 201 extends along the left-right direction in FIG. 8, by providing the support portion 22 on the first edge beam and / or the second edge beam, it is possible to ensure that each battery core 201 is supported by the support portion 22, it is possible to further ensure that the support portion 22 supports the battery core 201, it is possible to further ensure that the frame 20 supports most of the weight of the battery core 201, and thereby the support portion 22 can be arranged in a rational position.

[0024] 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 the first edge beam and the second edge beam, or between the front end beam 24 and the rear end beam 25, or between the front end beam 24 and the side edge beam 23, or between the rear end beam 25 and the side edge beam 23, thus improving the structural strength of the frame 20, and thereby improving the structural strength of the battery tray 100.

[0025] 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 battery core 201 is installed in the mounting groove 111, when the battery core 201 expands, the expansion beam 27 can limit the position of the battery core 201, and can improve the use safety of the battery core 201.

[0026] In some preferred embodiments, a plurality of support beams 26 are provided, and the plurality of support beams 26 are arranged at intervals along the longitudinal direction of the side edge beam 23 (the longitudinal direction of the side edge beam 23 refers to the front-to-rear direction in FIG. 6 ); a plurality of expansion beams 27 are provided, and the plurality of expansion beams 27 are arranged at intervals along the longitudinal direction of the side edge beam 23; 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.

[0027] In some embodiments of the present application, as shown in FIG. 11, 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. The support portion 22 may be understood to be provided adjacent to the lower end of the corresponding side edge beam 23, or the support portion 22 may be understood to be provided adjacent to the end of the corresponding side edge beam 23 away from the tray bottom plate 10, and by providing the support portion 22 adjacent to the end of the side edge beam 23 away from the tray bottom plate 10 after the bottom plate body 11 is installed in the installation space 21, 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.

[0028] 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 manner shown in Fig. 11, the upper end of the mounting groove 111 is opened, and the battery core 201 can be inserted into the mounting groove 111 from the open end of the mounting groove 111. In addition, the extension part 12 is extended in the circumferential direction along the open end of the mounting groove 111, and as shown in Fig. 11, the extension part 12 is connected to the upper end of the bottom plate body 11, and after the bottom plate body 11 is installed in the installation space 21, the extension part 12 can be provided outside the mounting groove 111 in this way, and it can be ensured that the extension part 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.

[0029] 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 plane, that is, as shown in Figure 11, the upper surface of the support portion 22 is provided as a plane, thus ensuring the support area between the support portion 22 and the bottom plate body 11, and allowing the support portion 22 to better support the battery core 201.

[0030] 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. In some preferred embodiments, the tray bottom plate 10 is glued to the frame 20. In addition, the support 22 and the bottom plate body 11 are glued and connected by injecting an adhesive (e.g., a structural adhesive) between the tray bottom plate 10 and the frame 20, and the thickness of the adhesive is used to control the absorption of 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 battery core 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 connecting the tray bottom plate 10 and the frame 20 by adhesive bonding, a welding connection 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 battery core 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.

[0031] In some embodiments of the present application, the frame 20 is configured as a metal part and may be made of an aluminum material or a steel material, but the present application is not limited thereto, and the frame 20 may be made of other metal materials that perform the same function as the steel material, for example, the frame 20 may be made of a steel material, roll-pressed with the steel material, or extruded with the steel material. By making the frame 20 a metal part, the load-bearing capacity of the frame 20 can be improved.

[0032] In some embodiments of the present application, as shown in FIG. 11 , at least one of the first edge beam and the second edge beam includes an edge beam body 231 connected to its corresponding support 22, for example, the first edge beam includes an edge beam body 231 connected to its corresponding support 22, and the second edge beam includes an edge beam body 231 connected to its corresponding support 22, the edge beam body 231 defines a cavity, a connecting plate 232 is provided in the cavity, the connecting plate 232 is inclinedly connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the cavity can be divided into a plurality of sub-cavities 235, the plurality of sub-cavities 235 are arranged in sequence in the width direction of the side edge beam 23, and when the battery tray 100 is arranged in the manner shown in FIG. 11 , the width direction of the side edge beam 23 refers to the left-right direction in FIG. 11 . In some preferred embodiments, as shown in FIG. 11 , in the direction from the top to the bottom of the battery tray 100, the connecting plate 232 is inclined toward the direction away from the mounting space 21, dividing the cavity into two sub-cavities 235, which are arranged in sequence in the width direction of the side edge beam 23, thus improving the structural strength of the side edge beam 23, improving the stability of the side edge beam 23, and thereby improving the ability of the side edge beam 23 to support the battery core 201. In some embodiments, the width direction of the side edge beam 23 may coincide with the width direction of the battery tray 100 or the width direction of the vehicle 2000. In some other embodiments, the width direction of the side edge beam 23 may coincide with the longitudinal direction of the battery tray 100 or the longitudinal direction of the vehicle 2000.

[0033] Furthermore, by arranging the multiple sub-cavities 235 in sequence in the width direction of the side edge beam 23, if one of the multiple sub-cavities 235 that is farthest from the mounting space 21 of the battery tray 100 is hit, for example, if the sub-cavity 235 located on the left side in Figure 11 is hit, the sub-cavity 235 that received the impact can absorb the collision force, reducing the magnitude of the collision force transmitted to the inside of the battery pack 200 and reducing the risk of damage to the battery core 201 in the battery pack 200, thereby improving the safety of using the battery pack 200.

[0034] In some preferred embodiments, as shown in Figures 10 and 11, the first side wall 236 away from the mounting space 21 of the cavity is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the first side wall 236 is connected to the connecting plate 232. In some preferred embodiments, as shown in Figure 11, the lower end of the first side wall 236 is connected to a first connecting portion 238 extending toward the inside of the cavity, and the first side wall 236 is connected to the bottom wall 234 of the cavity and the connecting plate 232 through the first connecting portion 238, and the first connecting portion 238 is fixedly connected to the bottom wall 234 of the cavity, for example, the first connecting portion 238 is welded to the bottom wall 234 of the cavity, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0035] In some preferred embodiments, as shown in Figures 10 and 11, a second side wall 237 adjacent to the mounting space 21 of the cavity is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the second side wall 237 is connected to the connecting plate 232. In some preferred embodiments, as shown in FIG. 11 , a second connecting portion 239 extending into the cavity is connected to the upper end of the second side wall 237, and the second side wall 237 is connected to the top wall 233 of the cavity and the connecting plate 232 through the second connecting portion 239, and the second connecting portion 239 is fixedly connected to the top wall 233 of the cavity, for example, the second connecting portion 239 is welded to the top wall 233 of the cavity, and the top wall 233 of the cavity, the bottom wall 234 of the cavity, the first side wall 236 and the second side wall 237 together define the cavity, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0036] In some preferred embodiments, as shown in Figures 10 and 11, the lower end of the second side wall 237 is connected to the support 22, and the second side wall 237 is connected to the bottom wall 234 of the cavity via the support 22. Furthermore, in the width direction of the side edge beam 23, one end of the bottom wall 234 of the cavity close to the mounting space 21 extends to below the support 22, and the end of the bottom wall 234 of the cavity close to the mounting space 21 is connected to the end of the support 22 close to the mounting space 21. In some preferred embodiments, the structure located below the support 22 of the bottom wall 234 of the cavity is provided with a boss structure 2391 protruding toward the support 22, and the boss structure 2391 is connected to the support 22, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0037] In some preferred embodiments, the structure located below the support portion 22 of the bottom wall 234 of the cavity is provided with a plurality of boss structures 2391, which are arranged in sequence in the width direction of the side edge beam 23, and at least one of the plurality of boss structures 2391 is located below the pressure-receiving area 112, in this way the boss structure 2391 can support the battery core 201, and the load-bearing capacity of the frame 20 can be further improved.

[0038] In some embodiments of the present application, as shown in Figures 5 and 6, a lifting lug structure 30 is connected to the frame 20, and mounting holes are provided in the lifting lug structure 30, and the lifting lug structure 30 is attached to the vehicle 2000 by fasteners (e.g., bolts), thereby achieving the purpose of attaching the battery pack 200 to the vehicle 2000.

[0039] 1 to 15, a battery tray 100 according to an embodiment of the present application includes a sealing structure 13, a tray bottom plate 10, and a frame 20. The tray bottom plate 10 includes a bottom plate body 11 and an extension portion 12, and the bottom plate body 11 defines a mounting groove 111 for mounting a battery core 201 or a battery module. In the present application, the battery core 201 is mounted in the mounting groove 111. The battery core 201 may be bonded in the mounting groove 111 by a structural adhesive, and a bottom wall 113 of the mounting groove has a pressure-receiving area 112 for supporting the battery core 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 battery core 201 overlap in the height direction of the battery tray 100 when the battery core 201 is attached in the mounting groove 111. Alternatively, 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 battery core 201 overlap in the height direction of the battery tray 100 when the battery core 201 is mounted in the mounting groove 111. When mounted in the groove 111, the contact area may be understood as the contact area between the battery core 201 and the bottom wall 113 of the mounting groove, and the contact area includes the area where the battery core 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 battery core 201 and the bottom wall 113 of the mounting groove, the battery core 201 and the bottom wall 113 of the mounting groove are in indirect contact, and when there is no other object between the battery core 201 and the bottom wall 113 of the mounting groove, the battery core 201 and the bottom wall 113 of the mounting groove are in direct contact, or the area where the weight of the battery core 201 directly acts on the bottom wall 113 of the mounting groove may be understood as 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 in 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 battery core 201 is the projection of the battery core 201 in a plane perpendicular to the height direction of the battery tray 100 .

[0040] When the battery core 201 is attached to the battery tray 100, the battery core 201 is positioned 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 structure, specifically, as a closed ring structure, and further, the extension portion 12 is provided with an escape through hole 122 for a fastener (e.g., a bolt or screw) to pass through.

[0041] The frame 20 defines an installation space 21, the bottom plate body 11 is attached within the installation space 21, the extension portion 12 is located outside the installation space 21 and is provided on the frame 20, and the extension portion 12 is further provided on the frame 20 by a fastener. As shown in Figs. 6, 8 and 11, the present application will be described taking as an example a case where the battery tray 100 is arranged along the vertical direction. After the bottom plate body 11 is attached within the installation space 21, the extension portion 12 is provided outside the installation space 21, and in the vertical direction of the battery tray 100, the extension portion 12 is provided corresponding to the frame 20. Specifically, as shown in Fig. 11, the extension portion 12 is provided above the frame 20 and positioned on the opposite side to the frame 20, and in the vertical direction of the battery tray 100, the extension portion 12 can shield the entire upper surface of the frame 20. The sealing structure 13 seals the relief through hole 122.

[0042] A plurality of bolt holes 28 are provided in frame 20, and the plurality of bolt holes 28 are provided in one-to-one correspondence with the plurality of relief through holes 122, and a plurality of blind nuts are embedded in frame 20 in advance, and the plurality of blind nuts are provided in one-to-one correspondence with the plurality of bolt holes 28, and pass through relief through holes 122 and bolt holes 28. Battery pack 200 includes a lid body 40, and lid body 40 and tray bottom plate 10 together define a mounting cavity 41 for mounting battery core 201, and lid body 40 is connected to frame 20. Furthermore, the lid body 40 is placed over the open end of the mounting groove 111 so as to define a mounting cavity 41, and the extension portion 12 is interposed between the lid body 40 and the frame 20 and is connected to a blind nut by a bolt passing through the escape through hole 122 of the lid body 40 and the extension portion 12 and the bolt hole 28 of the frame 20, thereby assembling the lid body 40, the tray bottom plate 10 and the frame 20 together. The bolt passes through the escape through-hole 122 and the sealing structure 13 seals the escape through-hole 122, thereby improving the sealing performance of the battery tray 100, preventing liquid from flowing into the mounting groove 111 through the escape through-hole 122, preventing a short circuit of the battery pack 200, and improving the safety of use of the battery pack 200. In addition, since the tray bottom plate 10 separates the battery core 201 and the frame 20, even if the frame 20 is not sealed, it can be ensured that liquid will not flow into the mounting groove 111, reducing the sealing requirements of the frame 20, reducing the manufacturing difficulties of the frame 20, and improving the production efficiency of the frame 20.

[0043] In some preferred embodiments, the tray bottom plate 10 is configured as a one-piece molded product, and thus the sealing property of the tray bottom plate 10 can be ensured and liquid can be prevented from flowing into the mounting groove 111 from the tray bottom plate 10, thereby further improving the safety of use of the battery pack 200.

[0044] In some embodiments of the present application, the sealing structure 13 is provided between the extension 12 and the frame 20 and is provided in correspondence with the relief through hole 122, and the sealing structure 13 can seal the relief through hole 122 by contacting the bolt passing through the cover 40, the relief through hole 122 of the extension 12, and the bolt hole 28 of the frame 20 to shield the relief through hole 122. And / or, the sealing structure 13 is provided in the relief through hole 122 so as to seal the relief through hole 122. When the sealing structure 13 is provided between the extension 12 and the frame 20, after the fastener passes through the relief through hole 122, the sealing structure 13 can seal the relief through hole 122 by coming into close contact with the fastener and covering the relief through hole 122. When the sealing structure 13 is provided in the relief through hole 122, the sealing structure 13 is interposed between the relief through hole 122 and the fastener to seal the gap between the relief through hole 122 and the fastener, thereby achieving the effect of sealing the relief through hole 122. For example, the sealing structure 13 is provided between the extension portion 12 and the frame 20 and in the relief through hole 122.

[0045] In some embodiments of the present application, as shown in Fig. 11, the extension 12 and the frame 20 are sealed and connected by a sealing structure 13, and the sealing structure 13 may be configured as a sealant and a rubber member, but the present application is not limited thereto, and the sealing structure 13 may be configured as a sealing member that plays the same role as a sealant. The sealing structure 13 may be interposed in the entire space between the tray bottom plate 10 and the frame 20, or in a part of the space between the extension 12 and the frame 20, or may be provided around the bolt hole 28 and the relief through hole 122, and the sealing structure 13 may be inserted into the bolt hole 28 and the relief through hole 122, thus realizing a sealed connection between the extension 12 and the frame 20, and effectively preventing liquid from flowing into the mounting cavity 41 through the bolt hole 28 of the frame 20.

[0046] Furthermore, the sealing structures 13 may be understood to be multiple, with the multiple sealing structures 13 arranged in sequence at intervals, and the multiple sealing structures 13 arranged in sequence at intervals between the tray bottom plate 10 and the frame 20. By simultaneously providing the multiple sealing structures 13 between the tray bottom plate 10 and the frame 20, the sealing property of the battery tray 100 can be further improved, and the inflow of liquid into the mounting cavity 41 from the bolt hole 28 of the frame 20 can be further prevented, and short-circuiting of the battery pack 200 can be further prevented, thereby further improving the safety of use of the battery pack 200.

[0047] In some embodiments of the present application, as shown in Figures 11 and 15, the frame 20 has a support portion 22 extending toward the mounting space 21, and the support portion 22 supports the bottom plate body 11. Further, the support portion 22 supports the pressure-receiving area 112, and a sealing structure 13 is provided between the support portion 22 and the bottom plate body 11. In this manner, the gap between the support portion 22 and the bottom plate body 11 can be sealed, and liquid can be prevented from entering between the tray bottom plate 10 and the frame 20 through the gap between the support portion 22 and the bottom plate body 11.

[0048] As shown in FIG. 11 , when the battery core 201 is mounted in the mounting groove 111, the battery core 201 is located in the pressure-receiving area 112 and the support 22 supports the pressure-receiving area 112, the weight of the battery core 201 is placed on the frame 20, the frame 20 supports most of the weight of the battery core 201, and the tray bottom plate 10 supports only a small part of the weight of the battery core 201, which greatly reduces the load-bearing demand of the tray bottom plate 10, the tray bottom plate 10 can be made of a material with lower strength and smaller thickness, and further, the tray bottom plate 10 is provided as a non-metallic part, and further, the tray bottom plate 10 is provided as an insulating part; It is sufficient to use a tray bottom plate 10 made of a lightweight non-metallic composite material. For example, the lightweight non-metallic 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. The lightweight non-metallic composite material may be made of other composite materials that play the same role as resin and glass fiber. In this way, the weight of the tray bottom plate 10 can be reduced, which is advantageous for the lightweight design of the battery tray 100 and the battery pack 200, and can also ensure the integrity of the battery pack 200 when the battery core 201 experiences thermal runaway or external fire. 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 can reduce the production cost of the tray bottom plate 10 and is advantageous for reducing the production cost of the battery tray 100 and the battery pack 200. In addition, the tray bottom plate 10 made of a non-metallic composite material has excellent electrical insulation performance, and when a serious bottoming accident occurs in the vehicle 2000, the battery pack 200 does not experience a high voltage risk such as arc discharge.

[0049] In addition, the tray bottom plate 10 is press-molded with lightweight non-metallic composite materials, and during press molding, after the resin melts, flows and hardens, the tray bottom plate 10 forms high airtightness, and through die molding, the tray bottom plate 10 has good flatness and dimensional accuracy, which can 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 required flatness of the product, and the efficiency of tailored blank welding is high, which improves the production 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 welded seam for airtightness, and there is no risk of poor sealing caused by welding. The tray bottom plate 10 may be press-molded with composite materials, and the production efficiency of the tray bottom plate 10 is high, and the die precision is high, so that a high flatness can be obtained, and the dimensional requirements of the battery core 201 can be reduced.

[0050] Furthermore, the conventional battery tray 100 does not distinguish between the two functions of load receiving 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 receiving and sealing are distinguished, with the frame 20 mainly performing the role of load receiving and the tray bottom plate 10 mainly performing the role of sealing the battery tray 100, thereby improving the manufacturing efficiency and yield rate of the battery tray 100.

[0051] As a result, through cooperation between the tray bottom plate 10 and the frame 20, the frame 20 supports most of the weight of the battery core 201, while the tray bottom plate 10 supports only a small portion of the weight of the battery core 201, and the tray bottom plate 10 mainly plays a sealing role, and it is possible to use a tray bottom plate 10 made of a lightweight composite material, which is advantageous for the lightweight design and cost reduction of the battery tray 100 and the battery pack 200. 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 and perform airtightness inspection of the battery tray 100, thereby improving the production efficiency of the battery tray 100.

[0052] In some embodiments of the present application, as shown in Figs. 6 and 8, the frame 20 includes a side edge beam 23, a front end beam 24, and a rear end beam 25, and the side edge beam 23, the front end beam 24, and the rear end beam 25 are connected to form a mounting space 21, and the connection between the side edge beam 23, the front end beam 24, and the rear end beam 25 includes a direct connection and an indirect connection. For example, in the case of the connection between the side edge beam 23 and the front end beam 24 being described as an example, the side edge beam 23 and the front end beam 24 may be directly connected, or may be indirectly connected via another beam. The side edge beam 23 and / or the front end beam 24 and / or the rear end beam 25 have a support portion 22, that is, at least one of the side edge beam 23, the front end beam 24, and the rear end beam 25 has a support portion 22. In the present application, the case where the support portion 22 is provided on the side edge beam 23 is described as an example. The number of side edge beams 23 may be two, and the numbers of rear end beam 25 and front end beam 24 may each be one. When the frame 20 is arranged in the arrangement manner shown in Figure 8, the two side edge beams 23 are spaced apart in the left-right direction in Figure 8, the front end beam 24 and the rear end beam 25 are both connected between the two side edge beams 23, and the front end beam 24 and the rear end beam 25 are spaced apart in the front-to-rear direction of the frame 20, so that the front end beam 24, the rear end beam 25 and the two side edge beams 23 together define the mounting space 21. In addition, when the battery cores 201 extend along the left-right direction in Figure 8, by providing the support parts 22 on the side edge beams 23, it can be ensured that each battery core 201 is supported by the support parts 22, it can be further ensured that the support parts 22 support the battery cores 201, and it can be further ensured that the frame 20 mainly supports the weight of the battery cores 201, so that the support parts 22 can be arranged in a rational position.

[0053] As can be understood, when the battery tray 100 is attached to the vehicle 2000, the width direction of the battery tray 100 may coincide with the vehicle width direction, and the length direction of the battery tray 100 may coincide with the vehicle length direction. Naturally, the width direction of the battery tray 100 may coincide with the vehicle length direction, and the length direction of the battery tray 100 may coincide with the vehicle width direction.

[0054] In some embodiments of the present application, as shown in FIG. 11 , the support portion 22 may be understood to be provided adjacent to the lower end of the side edge beam 23, or the support portion 22 may be understood to be provided adjacent to the end of the side edge beam 23 away from the tray bottom plate 10. By providing the support portion 22 adjacent to the end of the side edge beam 23 away from the tray bottom plate 10 after the bottom plate body 11 is installed in the mounting space 21, 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 mounting space 21.

[0055] In some embodiments of the present application, the sealing structure 13 is configured as a plate-like structure, in this way the surface flatness of the sealing structure 13 can be improved, and the sealing structure 13 can be closely attached to the tray bottom plate 10 and the frame 20, thereby ensuring the sealing between the tray bottom plate 10 and the frame 20.

[0056] In some embodiments of the present application, as shown in Figures 12, 13 and 15, a first rib 121 is provided on the surface of the extension portion 12 facing the frame 20, and the surface of the extension portion 12 facing the frame 20 and the first rib 121 define a first adhesive containing area. Further, the first rib 121 and the extension portion 12 are integrally molded, or the first rib 121 and the extension portion 12 are configured as separate items. For example, when the first rib 121 and the extension portion 12 are integrally molded, the first rib 121 and the tray bottom plate 10 are integrally molded by hot pressing using the same material. In this way, it is possible to avoid the addition of additional parts, reduce costs, and improve the assembly efficiency of the battery pack 200. When the sealing structure 13 is a structural adhesive, in the process of assembling the frame 20 and the tray bottom plate 10, the structural adhesive is first applied to the surface of the frame 20, and then the bottom plate body 11 of the tray bottom plate 10 is installed in the installation space 21. The first rib 121 of the extension portion 12 first comes into contact with the structural adhesive to press the structural adhesive, causing the structural adhesive to flow into the first adhesive containing area. Through the first rib 121 pressing the structural adhesive, the structural adhesive can be evenly distributed between the extension portion 12 and the frame 20, making the thickness of each area of ​​the sealing structure 13 more uniform and the relief through-hole 122 better sealed. After the battery core 201 is installed in the installation groove 111, the stability of the installation of the battery core 201 can be guaranteed.

[0057] In some embodiments of the present application, as shown in Figures 12, 13 and 15, the multiple escape through holes 122 are arranged at intervals in the circumferential direction of the extension portion 12, and the multiple escape through holes 122 are arranged at intervals in sequence in the extension direction of the extension portion 12, and a first rib 121 is provided between at least two adjacent escape through holes 122 among the multiple escape through holes 122, for example, a first rib 121 is provided between any two adjacent escape through holes 122, and at least one first rib 121 is provided between two adjacent escape through holes 122, and the multiple first ribs 121 press the structural adhesive simultaneously, so that the structural adhesive can be more uniformly provided between the extension portion 12 and the frame 20, the thickness of each region of the sealing structure 13 can be more uniform, and the stability of the mounting of the battery core 201 can be better guaranteed after the battery core 201 is installed in the mounting groove 111.

[0058] In some embodiments of the present application, a boss protruding toward the frame 20 is provided on the surface of the extension 12 facing the frame 20, and the surface of the extension 12 facing the frame 20 and the boss define a first adhesive receiving area. Further, the boss and the extension 12 are integrally molded, or the boss and the extension 12 are configured as separate parts. For example, when the boss and the extension 12 are integrally molded, the boss and the tray bottom plate 10 are integrally molded by hot pressing using the same material, and the boss is disposed around the relief through hole 122. Further, the boss is multiple, and the multiple bosses and the multiple relief through holes 122 are provided in one-to-one correspondence, and the sealing structure 13 is formed. is a structural adhesive, in the process of assembling the frame 20 and the tray bottom plate 10, the structural adhesive is first applied to the surface of the frame 20, and then the bottom plate body 11 of the tray bottom plate 10 is installed in the mounting space 21, and the boss of the extension portion 12 first comes into contact with the structural adhesive to press the structural adhesive, causing the structural adhesive to flow into the first adhesive containing area, and the boss presses the structural adhesive, so that the structural adhesive can be uniformly provided between the extension portion 12 and the frame 20, making the thickness of each area of ​​the sealing structure 13 more uniform, and after the battery core 201 is installed in the mounting groove 111, the stability of the mounting of the battery core 201 can be ensured.

[0059] In some embodiments of the present application, the height of the first rib 121 protruding from the surface of the extension portion 12 and the height of the boss protruding from the surface of the extension portion 12 are both H1, which satisfies the relationship 0.5 mm≦H1≦1.5 mm, and thus, after the extension portion 12 presses the structural adhesive, the thickness of the sealing structure 13 can be ensured to be appropriate.

[0060] In some embodiments of the present application, as shown in Figures 12, 13 and 15, a second rib 114 corresponding to the support portion 22 is provided on the surface of the bottom plate body 11 facing the support portion 22, and the surface of the bottom plate body 11 facing the support portion 12 and the second rib 114 define a second adhesive accommodating area, and the second rib 114 may be supported by the support portion 22 after the frame 20 and the tray bottom plate 10 are assembled together. In addition, a plurality of second ribs 114 are provided, and when the sealing structure 13 is a structural adhesive, during the assembly of the frame 20 and the tray bottom plate 10, the structural adhesive is applied to the surface of the support portion 22 located opposite the bottom plate body 11, and then the bottom plate body 11 is installed in the mounting space 21, and the second ribs 114 first come into contact with the structural adhesive to press the structural adhesive, causing the structural adhesive to flow into the second adhesive containing area, and the second ribs 114 press the structural adhesive, so that the structural adhesive can be uniformly provided between the support portion 22 and the bottom plate body 11, and the thickness of each area of ​​the sealing structure 13 can be made more uniform, and after the battery core 201 is installed in the mounting groove 111, the stability of the mounting of the battery core 201 can be ensured.

[0061] In some embodiments of the present application, as shown in Fig. 15, in the direction from the frame 20 to the mounting space 21, the end of the second rib 114 close to the mounting space 21 extends from the support part 22. When the battery tray 100 is arranged in the manner shown in Fig. 15, taking the side edge beam 23 located on the right side as an example, the left end of the second rib 114 extends from the left end of the support part 22. Since the side edge beam 23 is the main load-bearing member and it is necessary to strictly ensure the consistency and stability of the thickness of the adhesive layer in the entire area of ​​the sealing structure 13, the end of the second rib 114 close to the mounting space 21 extends from the support part 22, so that the consistency and stability of the thickness of the adhesive layer in the entire area of ​​the sealing structure 13 can be ensured.

[0062] In some embodiments of the present application, as shown in FIG. 11 , 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, and in this way, after the battery core 201 is placed in the mounting groove 111, it can be ensured that the support portion 22 supports the battery core 201, and it can be ensured that the frame 20 mainly supports the weight of the battery core 201.

[0063] In some embodiments of the present application, it may be understood that a pressure-receiving area 112 is formed on the bottom wall 113 of the mounting groove, and 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 portion 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 portion 22 is supported below the pressure-receiving area 112, which can further ensure that the support portion 22 supports the battery core 201, which can further ensure that the frame 20 mainly supports the weight of the battery core 201, so that the pressure-receiving area 112 can be arranged in a reasonable position.

[0064] 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 side edge beams 23, or between the front end beam 24 and the rear end beam 25, or between the front end beam 24 and the side edge beam 23, or between the rear end beam 25 and the side edge beam 23, thus improving the structural strength of the frame 20, and thereby improving the structural strength of the battery tray 100.

[0065] 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 battery core 201 is installed in the mounting groove 111, when the battery core 201 expands, the expansion beam 27 can limit the position of the battery core 201, and can improve the use safety of the battery core 201.

[0066] Furthermore, a plurality of support beams 26 are provided, and the plurality of support beams 26 are arranged at intervals in sequence along the longitudinal direction of the side edge beam 23, the longitudinal direction of the side edge beam 23 referring to the front-to-back direction in Figure 6, and a plurality of expansion beams 27 are provided, and the plurality of expansion beams 27 are arranged at intervals in sequence along the longitudinal direction of the side edge beam 23, 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.

[0067] In some embodiments of the present application, as shown in Figs. 5 to 7 and 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 battery core 201 is inserted into the mounting groove 111 from the open end of the mounting groove 111, thereby achieving the technical effect of mounting the battery core 201 in 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 installed in the installation space 21, the extension portion 12 can be provided outside the mounting groove 111 in this way, 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.

[0068] 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 plane, that is, as shown in Figure 11, the upper surface of the support portion 22 is provided as a plane, thus ensuring the support area between the support portion 22 and the bottom plate body 11, and allowing the support portion 22 to better support the battery core 201.

[0069] In some embodiments of the present application, the tray bottom plate 10 is glued to the frame 20. In addition, the tray bottom plate 10 and the frame 20 are glued and connected by injecting an adhesive (e.g., a structural adhesive) between them, and the thickness of the adhesive is used to control the absorption of 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 battery core 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 connecting the tray bottom plate 10 and the frame 20 by adhesive bonding, a welding connection 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 battery core 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.

[0070] In some embodiments of the present application, the tray bottom plate 10 is constructed as a one-piece molded product and is press-molded with lightweight composite material; during the press molding, after the resin melts, flows and hardens, the tray bottom plate 10 forms a high airtightness; and through mold molding, the tray bottom plate 10 has good flatness and dimensional accuracy, which can ensure the sealing function of the tray bottom plate 10.

[0071] In some embodiments of the present application, the frame 20 is configured as a metal part and may be manufactured from an aluminum material or a steel material, but the present application is not limited thereto, and the frame 20 may be manufactured from other metal materials that perform the same role as the steel material, for example, the frame 20 may be manufactured from a steel material, roll-pressed from the steel material, or extruded from the 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. In addition, the frame 20 manufactured from a steel material can withstand high temperatures of 1500°C or more, ensuring the integrity of the frame 20 when thermal runaway of the battery core 201 occurs.

[0072] In some embodiments of the present application, as shown in FIG. 11 , the side edge beam 23 includes an edge beam body 231, which defines a cavity, in which a connecting plate 232 is provided, and which is inclinedly connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and which can divide the cavity into a plurality of sub-cavities 235, which are arranged in sequence in the width direction of the side edge beam 23. When the battery tray 100 is arranged in the arrangement manner shown in FIG. 11 , the width direction of the side edge beam 23 refers to the left-right direction in FIG. 11 . Furthermore, as shown in FIG. 11 , in the upward to downward direction of the battery tray 100, the connecting plate 232 extends at an incline away from the mounting space 21, dividing the cavity into two sub-cavities 235, which are arranged in sequence in the width direction of the side edge beam 23. In this way, the structural strength of the side edge beam 23 can be improved, and the stability of the side edge beam 23 can be improved, thereby improving the ability of the side edge beam 23 to support the battery core 201, and further reducing the deformation risk of the frame 20.

[0073] Furthermore, by arranging the multiple sub-cavities 235 in sequence in the width direction of the side edge beam 23, if one of the multiple sub-cavities 235 that is farthest from the mounting space 21 of the battery tray 100 is hit, for example, if the sub-cavity 235 located on the left side in Figure 11 is hit, the sub-cavity 235 that received the impact can absorb the collision force, reducing the magnitude of the collision force transmitted to the inside of the battery pack 200 and reducing the risk of damage to the battery core 201 in the battery pack 200, thereby improving the safety of using the battery pack 200.

[0074] 10 and 11, the first side wall 236 away from the mounting space 21 of the cavity is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the first side wall 236 is connected to the connecting plate 232. Furthermore, as shown in FIG. 11, the lower end of the first side wall 236 is provided with a first connecting portion 238 extending toward the inside of the cavity, and the first connecting portion 238 is connected to both the bottom wall 234 of the cavity and the connecting plate 232, and the first connecting portion 238 is welded to the bottom wall 234 of the cavity, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0075] 10 and 11, the second side wall 237 adjacent to the mounting space 21 of the cavity is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the second side wall 237 is connected to the connecting plate 232. As shown in FIG. 11, the upper end of the second side wall 237 is provided with a second connecting portion 239 extending toward the inside of the cavity, and the second connecting portion 239 is connected to both the top wall 233 of the cavity and the connecting plate 232. The second connecting portion 239 is welded to the top wall 233 of the cavity, and the top wall 233 of the cavity, the bottom wall 234 of the cavity, the first side wall 236, and the second side wall 237 together define the cavity, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0076] 10 and 11, the support part 22 is connected to the lower end of the second side wall 237, and the support part 22 is connected to the bottom wall 234 of the cavity. In the width direction of the side edge beam 23, one end of the bottom wall 234 of the cavity close to the mounting space 21 extends to below the support part 22, and the end of the bottom wall 234 of the cavity close to the mounting space 21 is connected to the end of the support part 22 close to the mounting space 21. Furthermore, a boss structure 2391 protruding toward the support part 22 is provided in the structure located below the support part 22 of the bottom wall 234 of the cavity, and the boss structure 2391 is connected to the support part 22. In this way, the structural strength of the side edge beam 23 can be further improved, and the stability of the side edge beam 23 can be further improved.

[0077] Furthermore, the structure located below the support portion 22 of the bottom wall 234 of the cavity is provided with a plurality of boss structures 2391, which are arranged in sequence in the width direction of the side edge beam 23, and at least one of the plurality of boss structures 2391 is located below the pressure-receiving area 112. In this manner, the boss structure 2391 can support the battery core 201, further improving the load-bearing capacity of the frame 20 and reducing the risk of deformation of the support portion 22.

[0078] A battery pack 200 according to an embodiment of the present invention will be described below with reference to Figures 1 to 16. The battery pack 200 includes a battery core 201, a battery tray 100, and a lid .

[0079] The battery tray 100 includes a tray bottom plate 10 and a frame 20. The frame 20 defines an installation space 21, and the tray bottom plate 10 is installed in the installation space 21. The cover 40 and the tray bottom plate 10 are sealed and connected together to define a mounting cavity 41 for mounting the battery core 201. Furthermore, the cover 40 is connected to the frame 20, and the cover 40 and the tray bottom plate 10 may be sealed by a sealant or a gasket. The sealing method between the cover 40 and the tray bottom plate 10 is not specifically limited as long as the cover 40 and the tray bottom plate 10 can be sealed.

[0080] Since the cover body 40 and the tray bottom plate 10 are sealed and connected, a sealed mounting cavity 41 can be defined together. After the battery core 201 is placed in the mounting cavity 41, the tray bottom plate 10 can separate the battery core 201 and the frame 20. The battery core 201 is located in the completely sealed and insulated mounting cavity 41. The battery core 201 is sealed in the mounting cavity 41. There is no risk of leakage in the battery pack 200, which improves the safety of use of the battery pack 200. In addition, the welding gap of the frame 20 does not affect the sealing property of the battery pack 200. There is no need to perform an airtightness inspection of the battery tray 100, which improves the production efficiency of the battery tray 100.

[0081] In some embodiments of the present application, the battery pack 200 includes a sealing member 203, which is provided between the tray bottom plate 10 and the lid 40, thereby realizing a sealing connection between the lid 40 and the tray bottom plate 10 to seal the mounting cavity 41. In addition, the tray bottom plate 10 may be provided as a non-metallic part, and further, the tray bottom plate 10 may be provided as an insulating part, in which the tray bottom plate 10 has insulating and sealing functions, and the battery pack 200 is reliably sealed by the tray bottom plate 10, the lid 40 and the sealing member 203.

[0082] As a result, the battery tray 100, the lid body 40 and the sealing member 203 work together to allow the tray bottom plate 10 to separate the battery core 201 from the frame 20 after the battery core 201 is placed in the mounting cavity 41, and the battery core 201 is sealed in the mounting cavity 41, eliminating the risk of electric leakage in the battery pack 200 and improving the safety of use of the battery pack 200. In addition, the welding gaps in the frame 20 do not affect the sealing property of the battery pack 200, eliminating the need to perform an airtightness inspection of the battery tray 100 and improving the production efficiency of the battery tray 100.

[0083] In some embodiments of the present application, as shown in Figures 1, 3 and 7, the tray bottom plate 10 includes a bottom plate body 11, which defines a mounting groove 111 for mounting a battery core 201 or a battery module. In the present application, for example, the battery core 201 is mounted in the mounting groove 111. The cover body 40 is disposed over the open end of the mounting groove 111 to define a mounting cavity 41 for mounting the battery core 201. In this way, the installation of the mounting cavity 41 can be realized.

[0084] Furthermore, the tray bottom plate 10 further includes an extension portion 12 extending along the periphery of the bottom plate main body 11, and further, the extension portion 12 is configured as a ring structure, specifically, the extension portion 12 is configured as a closed ring structure, and a sealing member 203 is provided between the extension portion 12 and the lid body 40. Further, the lid body 40 has a second assembly flange 42 extending along the periphery of the lid body 40, and the sealing member 203 is provided between the extension portion 12 and the second assembly flange 42. The extension 12 is interposed between the second assembly flange 42 of the cover 40 and the frame 20, and the bolts penetrate the second assembly flange 42, the sealing member 203, the extension 12 and the frame 20 to assemble the cover 40, the sealing member 203, the tray bottom plate 10 and the frame 20 together, and the sealing member 203 can seal the mounting cavity 41, and after the battery core 201 is mounted in the mounting cavity 41, the battery core 201 and the frame 20 can be completely separated, and the battery core 201 is located in a completely insulated environment, ensuring that there is no risk of leakage of the battery pack 200. Note that the cover 40 may be provided in a flat plate structure, and the sealing member 203 is provided between the edge of the cover 40 and the extension 12 to realize a sealed connection between the cover 40 and the tray bottom plate 10. In this application, the cover 40 is provided with the second assembly flange 42 as an example.

[0085] The bottom wall 113 of the mounting groove has a pressure-receiving area 112 for supporting the battery core 201. The pressure-receiving area 112 refers to an area where the orthogonal projection of the bottom wall 113 of the mounting groove and the orthogonal projection of the battery core 201 overlap in the height direction of the battery tray 100 when the battery core 201 is mounted in the mounting groove 111. Alternatively, the pressure-receiving area 112 may be understood as a contact area between the battery core 201 and the bottom wall 113 of the mounting groove when the battery core 201 is mounted in the mounting groove 111. The contact area is the area where the orthogonal projection of the bottom wall 113 of the mounting groove overlaps with the orthogonal projection of the battery core 201 when the battery core 201 is mounted in the mounting groove 111. The pressure-receiving area 112 may include an area where the battery core 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 battery core 201 and the bottom wall 113 of the mounting groove, the battery core 201 and the bottom wall 113 of the mounting groove are in indirect contact, and when there is no other object between the battery core 201 and the bottom wall 113 of the mounting groove, the battery core 201 and the bottom wall 113 of the mounting groove are in direct contact, or the weight of the battery core 201 directly acts on the bottom wall of the bottom plate body 11. 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 in 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 battery core 201 is the projection of the battery core 201 in a plane perpendicular to the height direction of the battery tray 100.

[0086] When the battery core 201 is installed in the battery tray 100, the battery core 201 is positioned within the pressure-receiving area 112 of the mounting groove 111, the bottom plate main body 11 is installed within the mounting space 21, and the extension portion 12 is positioned outside the mounting space 21 and is provided on the frame 20. Furthermore, as shown in FIG. 3, in the height direction of the battery pack 200, when the battery pack is arranged in the direction in FIG. 3, the height direction of the battery pack 200 refers to the up-down direction in FIG. 3, the extension portion 12 and the cover body 40 are both located above the frame 20 and are provided corresponding to each other, and further, the extension portion 12 and the second assembly flange 42 are both located above the frame 20 and are provided corresponding to each other (for example, on opposite sides), and 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 in the up-down direction of the battery tray 100, the extension portion 12 is provided corresponding to the frame 20, specifically, as shown in FIG. 11, the extension portion 12 is located above the frame 20 and is provided on the opposite side to the frame 20, and in the up-down direction of the battery tray 100, the extension portion 12 can shield the entire upper surface of the frame 20.

[0087] In some embodiments of the present application, as shown in Figures 1 and 3, the battery pack 200 may further include a pressure plate 202, further, the pressure plate 202 is connected to the frame 20 by a fastener, the extension portion 12, the sealing member 203 and the cover body 40 are interposed between the pressure plate 202 and the frame 20, and further, the extension portion 12, the sealing member 203 and the second assembly flange 42 are interposed between the pressure plate 202 and the frame 20. The fastener may be a bolt or a screw. For example, when the fastener is a bolt, a blind nut is provided in the frame 20, and the bolt passes through the pressure plate 202, the second assembly flange 42, the sealing member 203, the extension portion 12 and the frame 20, and the bolt is connected to the blind nut. The pressure plate 202, the lid body 40, the tray bottom plate 10 and the frame 20 are assembled together. By providing the pressure plate 202, the pressure plate 202 can uniformly press the entire sealing member 203, ensuring reliable sealing of the mounting cavity 41.

[0088] In some embodiments of the present application, the extension portion 12, the sealing member 203, the second assembly flange 42 and the pressure plate 202 are all configured as annular structures, and further, the extension portion 12, the sealing member 203, the second assembly flange 42 and the pressure plate 202 are all configured as closed ring structures. After the pressure plate 202, the lid body 40, the tray bottom plate 10 and the frame 20 are assembled together, the extension portion 12, the sealing member 203, the second assembly flange 42 and the pressure plate 202 are all configured as closed ring structures, so that the mounting cavity 41 can be sealed in the circumferential direction of the mounting cavity 41, and the sealing property of the mounting cavity 41 is ensured, thereby rationally installing the structures of the extension portion 12, the sealing member 203, the second assembly flange 42 and the pressure plate 202.

[0089] In some embodiments of the present application, as shown in Figures 1, 3, 7 and 8, the extension portion 12, the sealing member 203, the cover 40, the pressure plate 202 and the frame 20 are all provided with assembly holes 50 that engage with fasteners, and further, the extension portion 12, the sealing member 203, the second assembly flange 42, the pressure plate 202 and the frame 20 are all provided with assembly holes 50 that engage with fasteners. The assembly holes 50 of the pressure plate 202, the assembly holes 50 of the second assembly flange 42, the assembly holes 50 of the sealing member 203, the assembly holes 50 of the extension portion 12 and the assembly holes 50 of the frame 20 are provided correspondingly, and the fasteners are connected to blind nuts through the assembly holes 50 of the pressure plate 202, the assembly holes 50 of the second assembly flange 42, the assembly holes 50 of the sealing member 203, the assembly holes 50 of the extension portion 12 and the assembly holes 50 of the frame 20, and by providing the assembly holes 50, the pressure plate 202, the lid body 40, the tray bottom plate 10 and the frame 20 can be assembled.

[0090] In some embodiments of the present application, the sealing member 203 is provided as a seal ring, which has excellent sealing performance, and thus the sealing performance of the sealing member 203 can be guaranteed, and the gap between the extension portion 12 and the second assembly flange 42 can be better sealed, thereby improving the sealing property of the mounting cavity 41.

[0091] In some embodiments of the present application, the frame 20 has a support portion 22 extending into the mounting space 21, and the support portion 22 supports the pressure-receiving area 112 of the tray bottom plate 10. As shown in Figures 6, 8 and 11, the present application will be described taking as an example a case where the battery tray 100 is arranged along the up-down direction. As shown in FIG. 11 , when the battery core 201 is mounted in the mounting groove 111, the battery core 201 is located in the pressure-receiving area 112, the support 22 supports the pressure-receiving area 112, the weight of the battery core 201 is placed on the frame 20, the frame 20 supports most of the weight of the battery core 201, and the tray bottom plate 10 does not support the weight of the battery core 201 or only supports a small part of the weight of the battery core 201, which greatly reduces the load-bearing demand of the tray bottom plate 10, and the thickness of the tray bottom plate 10 can be reduced, and the tray bottom plate 10 can be made of a material with lower strength and thinner thickness, and further, the tray bottom plate 10 is provided as a non-metallic part, and further, the tray bottom plate 10 is provided as an insulating part and made of a lightweight non-metallic composite material. For example, the lightweight non-metallic 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 composite material may be made of other composite materials that play the same role as the resin and glass fiber, thus reducing the weight of the tray bottom plate 10, which is advantageous for the lightweight design of the battery tray 100 and the battery pack 200, and the conventional tray bottom plate 10 is made of aluminum material, and the present application manufactures the tray bottom plate 10 from a non-metallic composite material, which can reduce the production cost of the tray bottom plate 10, which is advantageous for reducing the production cost of the battery tray 100 and the battery pack 200. In addition, the tray bottom plate 10 manufactured from the 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. As can be understood, when the battery tray 100 is attached to the vehicle 2000, the height direction of the battery tray 100 may coincide with the height direction of the vehicle 2000.

[0092] In addition, the tray bottom plate 10 is configured as an integrally molded product and is press-molded with lightweight non-metallic composite materials. During press molding, the tray bottom plate 10 forms high airtightness after the resin melts, flows and hardens, and the tray bottom plate 10 has good flatness and dimensional accuracy through die molding, which can 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 required flatness of the product, and the efficiency of tailored blank welding is high, which improves the production efficiency of the battery tray 100, and the tray bottom plate 10 plays the role of sealing, and there is no need to grind the welded seam and perform airtightness inspection, and there is no risk of poor sealing due to welding. The tray bottom plate 10 may be press-molded with composite materials, and the production efficiency of the tray bottom plate 10 is high and the die precision is high, so that a high flatness can be obtained and the dimensional requirements of the battery core 201 can be reduced.

[0093] Furthermore, the conventional battery tray 100 does not distinguish between the two functions of load receiving 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 receiving and sealing are distinguished, with the frame 20 mainly performing the role of load receiving and the tray bottom plate 10 mainly performing the role of sealing the battery tray 100, thereby improving the manufacturing efficiency and yield rate of the battery tray 100.

[0094] As a result, through cooperation between the tray bottom plate 10 and the frame 20, the frame 20 supports most of the weight of the battery core 201, and the tray bottom plate 10 supports only a small portion of the weight of the battery core 201, and the tray bottom plate 10 mainly plays a sealing role, 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 is advantageous for the lightweight design and cost reduction of the battery tray 100 and the battery pack 200. 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 and perform airtightness inspection of the battery tray 100, which improves the production efficiency of the battery tray 100.

[0095] In some embodiments of the present application, as shown in FIG. 11 , 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, and in this way, after the battery core 201 is placed in the mounting groove 111, it can be ensured that the support portion 22 supports the battery core 201, and it can be ensured that the frame 20 mainly supports the weight of the battery core 201.

[0096] In some embodiments of the present application, it may be understood that a pressure-receiving area 112 is formed on the bottom wall 113 of the mounting groove, and 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 battery core 201, which can further ensure that the frame 20 mainly supports the weight of the battery core 201, so that the pressure-receiving area 112 can be arranged in a reasonable position.

[0097] In some embodiments of the present application, as shown in Figures 6 and 8, the frame 20 includes a side edge beam 23, a front end beam 24, and a rear end beam 25, and the side edge beam 23, the front end beam 24, and the rear end beam 25 are connected to form a mounting space 21, and the connection between the side edge beam 23, the front end beam 24, and the rear end beam 25 includes a direct connection and an indirect connection. For example, in the case of the connection between the side edge beam 23 and the front end beam 24, the side edge beam 23 and the front end beam 24 may be directly connected or indirectly connected via another beam. The side edge beam 23 has a support portion 22. There are two side edge beams 23, one rear end beam 25 and one front end beam 24. When the frame 20 is arranged in the arrangement manner shown in FIG. 8, the two side edge beams 23 are spaced apart in the left-right direction in FIG. 8, the front end beam 24 and the rear end beam 25 are connected between the two side edge beams 23, and the front end beam 24 and the rear end beam 25 are spaced apart in the front-rear direction of the frame 20, so that the front end beam 24, the rear end beam 25 and the two side edge beams 23 together define the mounting space 21. In addition, when the battery cores 201 are extended along the left-right direction in FIG. 8, the support parts 22 are provided on the side edge beams 23, which can ensure that each battery core 201 is supported by the support parts 22, which can further ensure that the support parts 22 support the battery cores 201, which can further ensure that the frame 20 mainly supports the weight of the battery cores 201, so that the support parts 22 can be arranged at a reasonable position. As can be understood, when the battery tray 100 is attached to the vehicle 2000, the width direction of the battery tray 100 may coincide with the vehicle width direction, and the length direction of the battery tray 100 may coincide with the vehicle length direction. Naturally, the width direction of the battery tray 100 may coincide with the vehicle length direction, and the length direction of the battery tray 100 may coincide with the vehicle width direction.

[0098] 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 side edge beams 23, or between the front end beam 24 and the rear end beam 25, or between the front end beam 24 and the side edge beam 23, or between the rear end beam 25 and the side edge beam 23, thus improving the structural strength of the frame 20, and thereby improving the structural strength of the battery tray 100.

[0099] 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 battery core 201 is installed in the mounting groove 111, when the battery core 201 expands, the expansion beam 27 can limit the position of the battery core 201, and the use safety of the battery core 201 can be improved.

[0100] Furthermore, a plurality of support beams 26 may be provided, and the plurality of support beams 26 may be arranged at intervals along the longitudinal direction of the side edge beam 23, the longitudinal direction of the side edge beam 23 referring to the front-to-rear direction in FIG. 6, and the plurality of support beams 26 may be arranged at intervals along the width direction of the battery tray 100, the width direction of the battery tray 100 referring to the left-to-right direction in FIG. 6. In the present application, an example is described in which the plurality of support beams 26 are arranged at intervals along the longitudinal direction of the side edge beam 23. A plurality of expansion beams 27 are provided, and the plurality of expansion beams 27 are arranged at intervals along the longitudinal direction of the side edge beam 23, and the plurality of expansion beams 27 and the plurality of support beams 26 are provided 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.

[0101] In some embodiments of the present application, as shown in FIG. 11 , the support portion 22 may be understood to be provided adjacent to the lower end of the side edge beam 23, or the support portion 22 may be understood to be provided adjacent to the end of the side edge beam 23 away from the tray bottom plate 10. By providing the support portion 22 adjacent to the end of the side edge beam 23 away from the tray bottom plate 10 after the bottom plate body 11 is installed in the mounting space 21, 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 mounting space 21.

[0102] 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 battery core 201 can be inserted into the mounting groove 111 from the open end of the mounting groove 111. In addition, the extension part 12 is extended along the open end of the mounting groove 111, and as shown in Fig. 11, after the extension part 12 is connected to the upper end of the bottom plate body 11 and the bottom plate body 11 is installed in the installation space 21, the extension part 12 can be provided outside the mounting groove 111 in this way, and it can be ensured that the extension part 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.

[0103] 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 plane, that is, as shown in Figure 11, the upper surface of the support portion 22 is provided as a plane, thus ensuring the support area between the support portion 22 and the bottom plate body 11, and allowing the support portion 22 to better support the battery core 201.

[0104] 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 and connected by injecting an adhesive (e.g., a structural adhesive) between them, and the thickness of the adhesive is used to control the absorption of 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 battery core 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 connecting the tray bottom plate 10 and the frame 20 by adhesive bonding, a welding connection 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 battery core 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.

[0105] In some embodiments of the present application, the tray bottom plate 10 is constructed as a one-piece molded product and is press-molded with lightweight composite material; during the press molding, after the resin melts, flows and hardens, the tray bottom plate 10 forms a high airtightness; and through mold molding, the tray bottom plate 10 has good flatness and dimensional accuracy, which can ensure the sealing function of the tray bottom plate 10.

[0106] In some embodiments of the present application, the frame 20 is configured as a metal part and may be manufactured from an aluminum material or a steel material, but the present application is not limited thereto, and the frame 20 may be manufactured from other metal materials that perform the same role as the steel material, for example, the frame 20 may be manufactured from a steel material, roll-pressed from the steel material, or extruded from the 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. In addition, the frame 20 manufactured from a steel material can withstand high temperatures of 1500°C or more, ensuring the integrity of the frame 20 when thermal runaway of the battery core 201 occurs.

[0107] In some embodiments of the present application, as shown in FIG. 11 , the side edge beam 23 includes an edge beam body 231, which defines a cavity, in which a connecting plate 232 is provided, and which is inclinedly connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and which can divide the cavity into a plurality of sub-cavities 235, which are arranged in sequence in the width direction of the side edge beam 23. When the battery tray 100 is arranged in the arrangement manner shown in FIG. 11 , the width direction of the side edge beam 23 refers to the left-right direction in FIG. 11 . Furthermore, as shown in FIG. 11 , in the upward to downward direction of the battery tray 100, the connecting plate 232 is extended at an incline away from the mounting groove 111, and the connecting plate 232 divides the cavity into two sub-cavities 235, which are arranged in sequence in the width direction of the side edge beam 23. In this way, the structural strength of the side edge beam 23 can be improved, and the stability of the side edge beam 23 can be improved, thereby improving the ability of the side edge beam 23 to support the battery core 201, and further reducing the risk of deformation of the frame 20.

[0108] Furthermore, by arranging the multiple sub-cavities 235 in sequence in the width direction of the side edge beam 23, if one of the multiple sub-cavities 235 that is away from the mounting space 21 (or mounting groove 111) of the battery tray 100 is hit, for example, if the sub-cavity 235 located on the left side in Figure 11 is hit, the sub-cavity 235 that received the impact can absorb the collision force, reducing the magnitude of the collision force transmitted to the inside of the battery pack 200 and reducing the risk of damage to the battery core 201 in the battery pack 200, thereby improving the safety of using the battery pack 200.

[0109] 10 and 11, the first side wall 236 away from the mounting space 21 (or the mounting groove 111) of the cavity is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the first side wall 236 is connected to the connecting plate 232. Furthermore, as shown in FIG. 11, the lower end of the first side wall 236 is provided with a first connecting portion 238 extending toward the inside of the cavity, and the first connecting portion 238 is located on the side of the bottom wall 234 of the cavity facing the top wall 233 of the cavity, and the first side wall 236 is connected to both the bottom wall 234 of the cavity and the connecting plate 232 via the first connecting portion 238, and the first connecting portion 238 is welded to the bottom wall 234 of the cavity, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0110] 10 and 11, the second side wall 237 adjacent to the mounting space 21 (or the mounting groove 111) of the cavity is connected between the top wall 233 of the cavity and the bottom wall 234 of the cavity, and the second side wall 237 is connected to the connecting plate 232. Furthermore, as shown in Fig. 11, a second connecting portion 239 extending toward the inside of the cavity is provided at the upper end of the second side wall 237, and the second connecting portion 239 is located on the side of the top wall 233 of the cavity facing the bottom wall 234 of the cavity, and the second side wall 237 is connected to both the top wall 233 of the cavity and the connecting plate 232 via the second connecting portion 239. The second connection portion 239 is welded to the cavity top wall 233, and the cavity top wall 233, the cavity bottom wall 234, the first side wall 236 and the second side wall 237 together define the cavity, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0111] 10 and 11, the support portion 22 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. In addition, in the width direction of the side edge beam 23, the bottom wall 234 of the cavity has a structural reinforcement portion 2341 extending below the support portion 22, and the structural reinforcement portion 2341 is connected to the end of the support portion 22 close to the tray bottom plate 10, and the structural reinforcement portion 2341 may be understood as extending below the support portion 22 and connected to the end of the support portion 22 close to the mounting space 21. Furthermore, the structural reinforcement portion 2341 is provided with a boss structure 2391 protruding toward the support portion 22, and the boss structure 2391 is connected to the support portion 22, thus further improving the structural strength of the side edge beam 23 and further improving the stability of the side edge beam 23.

[0112] In some embodiments, the height direction of the side edge beam 23 may coincide with the height direction of the battery tray 100, and the width direction of the side edge beam 23 may coincide with the width direction or longitudinal direction of the battery tray 100. When the battery tray 100 is attached to the vehicle 2000, the height direction of the side edge beam 23 may coincide with the height direction of the vehicle 2000, and the width direction of the side edge beam 23 may coincide with the vehicle length direction or vehicle width direction. Furthermore, the structural reinforcement part 2341 is provided with a plurality of boss structures 2391, which are sequentially provided in the width direction of the side edge beam 23, and at least one of the plurality of boss structures 2391 is located below the pressure-receiving area 112, and thus the boss structure 2391 can support the battery core 201, which can further improve the load-bearing capacity of the frame 20 and reduce the deformation risk of the support part 22.

[0113] Hereinafter, a tray bottom plate 10 according to an embodiment of the present invention will be described with reference to the drawings.

[0114] As shown in Figures 17 and 18, the tray bottom plate 10 includes a bottom plate main body 11 defining a mounting groove 111 for accommodating a battery core 201, and the bottom surface of the mounting groove 111 is adhesively fixed to the battery core 201 by a first adhesive member, thereby ensuring that the battery core 201 is stably mounted in the mounting groove 111.

[0115] The tray bottom plate 10 further includes a first support protrusion 117, which is provided on the bottom surface of the mounting groove 111 and protrudes from the bottom surface of the mounting groove 111, and the first support protrusion 117 and the bottom surface of the mounting groove 111 together define a third adhesive accommodating area 11a, in which the side wall of the first support protrusion 117 defines the side wall of the third adhesive accommodating area 11a, the third adhesive accommodating area 11a accommodates the first adhesive member, and the first support protrusion 117 supports the battery core 201.

[0116] In this way, when the tray bottom plate 10 is used in the battery pack 200, the first support protrusion 117 can support the bottom of the battery core 201, the first support protrusion 117 is provided between the battery core 201 and the bottom surface of the mounting groove 111, the first adhesive member is also provided between the battery core 201 and the bottom surface of the mounting groove 111, and the first adhesive member fixedly connects the bottom of the battery core 201 and the bottom surface of the mounting groove 111. The first adhesive member is provided on the edge of the first support protrusion 117, and the surface of the first adhesive member adhered to the battery core 201 and the surface of the first support protrusion 117 supporting the battery core 201 can be basically located in the same plane, and the thickness of the first adhesive member is made to match the height of the first support protrusion 117. In this case, the first support protrusion 117 can play a role in limiting the thickness of the first adhesive member, so that the thickness of the first adhesive member can be adjusted by adjusting the height of the first support protrusion 117, thereby ensuring the adhesive strength of the first adhesive member and further ensuring reliable adhesion between the tray bottom plate 10 and the battery core 201.

[0117] Here, when the first support protrusion 117 and the bottom plate main body 11 are one piece, there is no need to previously attach a limiting adhesive tape to the bottom surface of the mounting groove 111 during assembling the tray bottom plate 10 and the battery core 201, and there is no need to add additional parts, which reduces costs and avoids the problem of incorrect application when manually applying the limiting adhesive tape later. It also eliminates the manual operation process of the first support protrusion 117, improves the processing efficiency of the tray bottom plate 10, simplifies the assembly process between the tray bottom plate 10 and the battery core 201, improves the assembly efficiency between the tray bottom plate 10 and the battery core 201, and ensures the connection strength between the first support protrusion 117 and the bottom plate main body 11.

[0118] According to the tray bottom plate 10 of the embodiment of the present application, the first support protrusion 117 is provided on the bottom surface of the mounting groove 111 so as to protrude from the bottom surface of the mounting groove 111, and the first support protrusion 117 and the bottom surface of the mounting groove 111 together define a third adhesive accommodating area 11a for accommodating the first adhesive member. Since the first support protrusion 117 and the bottom plate main body 11 are integral, there is no need to manually provide the first support protrusion 117 separately, which improves the processing efficiency of the tray bottom plate 10 and simplifies the assembly process between the tray bottom plate 10 and the battery core 201, and improves the assembly efficiency between the tray bottom plate 10 and the battery core 201.

[0119] It can be understood that the cross-sectional shape of the first support protrusion 117 can be specifically set according to actual needs.

[0120] Preferably, the first support protrusions 117 and the bottom plate body 11 are integrally formed by hot pressing, and the material of the first support protrusions 117 is the same as the material of the bottom plate body 11.

[0121] In some embodiments, as shown in FIGS. 17 and 18 , a plurality of first support protrusions 117 spaced apart along a first direction (e.g., the AA′ direction in FIG. 17 ) constitute a protrusion group 18, the number of protrusion groups 18 is plural, and the plurality of protrusion groups 18 are spaced apart along a second direction (e.g., the BB′ direction in FIG. 17 ). When the first direction is perpendicular to the second direction, the plurality of first support protrusions 117 on the bottom surface of the mounting groove 111 may be basically arranged in multiple rows and columns along the second direction and the first direction, which simplifies the arrangement method of the plurality of first support protrusions 117 and facilitates the processing of the first support protrusions 117. Any two adjacent first support protrusions 117 in each protrusion group 18, as well as the first support protrusions 117 adjacent to the edge of the bottom plate body 11 in each protrusion group 18 and the edge of the bottom plate body 11 each accommodate a portion of the first adhesive member. The sub-adhesive receiving groove 11b may be defined, and each protrusion group 18 may correspond to a plurality of sub-adhesive receiving grooves 11b. Any two adjacent sub-adhesive receiving grooves 11b may be connected to each other, so that the structural adhesive in any one of the sub-adhesive receiving grooves 11b can be directly or indirectly circulated into any other one of the sub-adhesive receiving grooves 11b, reducing the requirement for the injection position of the adhesive, that is, the structural adhesive can be injected into any one of the sub-adhesive receiving grooves 11b, and the structural adhesive can be filled into the third adhesive receiving area 11a corresponding to the entire bottom surface of the mounting groove 111 due to the fluidity of the structural adhesive. Similarly, during dismantling of the battery core 201, a release agent can be injected into a selected sub-adhesive receiving groove 11b, and the release agent can dissolve the entire first adhesive member to smoothly separate the battery core 201 and the tray bottom plate 10 due to the fluidity of the release agent. Note that one of the first direction and the second direction may be the longitudinal direction of the battery tray 100, and the other may be the width direction of the battery tray 100.

[0122] When the tray bottom plate 10 is used in the battery pack 200, if there are multiple battery cores 201 and the multiple battery cores 201 are spaced apart along the second direction, during dismantling of the battery cores 201, a release agent can be injected into the gap between two adjacent battery cores 201, that is, the adhesive can be better peeled off by injecting the release agent from the post direction of the battery cores 201.

[0123] As can be understood, the multiple first support protrusions 117 of the protrusion group 18 may be equally spaced or unequal spaced, and the number of first support protrusions 117 of the multiple protrusion groups 18 may be equal or different. For example, in the example of FIG. 17 , at least one set of protrusion groups 18 includes three first support protrusions 117, and at least one set of protrusion groups 18 includes four first support protrusions 117.

[0124] In some embodiments, as shown in Figures 17 and 18, the projections along the first direction of the first support protrusions 117 of two adjacent protrusion groups 18 partially overlap, that is, a portion of the projection along the first direction of at least one first support protrusion 117 of one protrusion group 18 of two adjacent protrusion groups 18 overlaps with a portion of the projection along the first direction of at least one first support protrusion 117 of the other protrusion group 18, which makes it easier to realize continuous extension of the projections along the first direction of multiple protrusion groups 18, and for a single battery core 201, this is advantageous in increasing the number of first support protrusions 117 supporting the single battery core 201 and improving the stability of the attachment of the battery core 201. At the same time, since the projections along the first direction of the first support protrusions 117 of two adjacent protrusion groups 18 partially overlap, at least one first support protrusion 117 of one of the protrusion groups 18 and at least one first support protrusion 117 of the other protrusion group 18 are spaced apart along the first direction, thereby increasing the communication cross-sectional area between the sub-adhesive accommodating grooves 11b corresponding to the two adjacent protrusion groups 18 and improving the communication between the sub-adhesive accommodating grooves 11b corresponding to the two adjacent protrusion groups 18, which is advantageous for quickly filling the structural adhesive into the third adhesive accommodating region 11a and quickly depositing the release agent to dissolve the first adhesive member.

[0125] In some embodiments, as shown in FIG. 19 , the height of the first support protrusion 117 is h1, i.e., the distance between the top surface of the first support protrusion 117 and the bottom surface of the mounting groove 111 is h1, or the distance between the surface of the first support protrusion 117 away from the bottom surface of the mounting groove 111 and the bottom surface of the mounting groove 111 is h1, where 0.5 mm≦h1≦1.5 mm, thereby ensuring that the third adhesive receiving area 11a has sufficient adhesive receiving space, ensuring the adhesive strength of the first adhesive member, and facilitating the processing of the first support protrusion 117.

[0126] In some embodiments, the tray bottom plate 10 is an insulating material part, so that the tray bottom plate 10 has excellent electrical insulation properties, and even if the coolant of the battery pack 200 leaks, the risk of high-voltage arc discharge between the tray bottom plate 10 and the battery core 201 can be avoided, and the normal use of the battery pack 200 can be ensured. In addition, the tray bottom plate 10 is an integrally molded product, which eliminates the connection process between each part of the tray bottom plate 10, and is advantageous to improving the processing efficiency of the tray bottom plate 10, and does not require processing a connection structure or the like on each part of the tray bottom plate 10, which is advantageous to simplify the structure of the tray bottom plate 10 and reduce costs, and also easily ensures the connection strength between each part of the tray bottom plate 10 and ensures the overall structural strength of the tray bottom plate 10.

[0127] As can be understood, when the tray bottom plate 10 is a one-piece molded product, the processing method of the tray bottom plate 10 can be specifically set according to actual needs. For example, the tray bottom plate 10 can be formed as a one-piece molded product by press molding.

[0128] Preferably, the tray bottom plate 10 is a composite material part, which can ensure the electrical insulation of the tray bottom plate 10 and facilitate the structural strength of the tray bottom plate 10, thereby stably placing the battery core 201 on the tray bottom plate 10.

[0129] In some embodiments, as shown in Figures 17 and 20 to 22, the bottom plate body 11 includes a bottom plate 1111 and a side plate 1112, the side plate 1112 is arranged around the bottom plate 1111, and the side plate 1112 and the bottom plate 1111 together define a mounting groove 111, and the side plate 1112 may be formed in an approximately annular structure, and the bottom plate 1111 and the side plate 1112 each have a certain degree of positional limiting effect on the battery core 201, and can ensure the stability of the installation of the battery core 201.

[0130] In this way, the top surface of the bottom plate 1111 is formed as the bottom surface of the mounting groove 111, and the second support protrusion 115 is provided on the bottom surface of the bottom plate 1111, and the second support protrusion 115 is the same structural member as the second rib 114 in the above embodiment, in which the first support protrusion 117 and the second support protrusion 115 are provided on the surfaces on both sides of the thickness of the bottom plate 1111 respectively, so that the first support protrusion 117 and the second support protrusion 115 are located on different sides of the thickness of the bottom plate 1111. The bottom surface of the bottom plate 1111 is adhesively fixed to the frame 20 by the second adhesive member, ensuring a reliable fixation between the bottom plate 1111 and the frame 20. The second support protrusion 115 and the bottom surface of the bottom plate 1111 together define a fourth adhesive receiving area, where the sidewalls of the second support protrusion 115 define the sidewalls of the fourth adhesive receiving area, the fourth adhesive receiving area receiving the second adhesive member, and the second support protrusion 115 abuts against and engages with the frame 20.

[0131] For example, when the tray bottom plate 10 is used in the battery tray 100, the second support protrusion 115 is lapped on the top surface of the frame 20, the second support protrusion 115 is provided between the bottom surface of the bottom plate 1111 and the frame 20, the second adhesive member is also provided between the bottom surface of the bottom plate 1111 and the frame 20, and the bottom surface of the bottom plate 1111 and the frame 20 are fixedly connected by the second adhesive member. In this case, the surface of the second adhesive member attached to the frame 20 and the surface of the second support protrusion 115 abutting the frame 20 are basically located in the same plane, and the thickness of the second adhesive member is made to match the height of the second support protrusion 115. In this case, the second support protrusion 115 can play a role in limiting the thickness of the second adhesive member, so that the thickness of the second adhesive member can be adjusted by adjusting the height of the second support protrusion 115, thereby ensuring the adhesive strength of the second adhesive member and further ensuring reliable adhesion between the bottom plate 1111 and the frame 20.

[0132] 20 to 22, preferably, the second support protrusions 115 and the bottom plate 1111 are integral, thereby further improving the processing efficiency of the tray bottom plate 10, simplifying the assembly process of the tray bottom plate 10 and the frame 20, and improving the assembly efficiency of the tray bottom plate 10 and the frame 20. For example, the second support protrusions 115 and the bottom plate 1111 are integral by hot pressing, and the material of the second support protrusions 115 is the same as the material of the bottom plate 1111.

[0133] As shown in Figs. 20 to 24, the bottom plate main body 11 further includes an extension portion 12, and the extension portion 12 is provided on the edge portion of the side plate 1112 and around the side plate 1112, so that the extension portion 12 may be formed into a substantially annular structure. A third support protrusion 116 is provided on the bottom surface of the extension portion 12, and the third support protrusion 116 is the same structural member as the first rib 121 in the above embodiment, and the bottom surface of the extension portion 12 is adhesively fixed to the frame 20 by a third adhesive member to ensure a reliable fixation between the extension portion 12 and the frame 20. The third support protrusion 116 and the bottom surface of the extension portion 12 together define a fifth adhesive receiving area, in which case the side wall of the third support protrusion 116 defines the side wall of the fifth adhesive receiving area, the fifth adhesive receiving area receives the third adhesive member, and the third support protrusion 116 abuts against the frame 20 to be locked.

[0134] For example, when the tray bottom plate 10 is used in the battery tray 100, the third support protrusion 116 is lapped to the frame 20, the third support protrusion 116 is provided between the bottom surface of the extension portion 12 and the frame 20, the third adhesive member is also provided between the bottom surface of the extension portion 12 and the frame 20, and the bottom surface of the extension portion 12 and the frame 20 are fixedly connected by the third adhesive member. In this case, the surface of the third adhesive member attached to the frame 20 and the surface of the third support protrusion 116 abutting the frame 20 are basically located in the same plane, and the thickness of the third adhesive member is made to match the height of the third support protrusion 116. In this case, the third support protrusion 116 can play a role in limiting the thickness of the third adhesive member, so that the thickness of the third adhesive member can be adjusted by adjusting the height of the third support protrusion 116, thereby ensuring the adhesive strength of the third adhesive member and further ensuring reliable adhesion between the extension portion 12 and the frame 20.

[0135] Preferably, the third support protrusion 116 and the extension portion 12 are integral, which further improves the processing efficiency of the tray bottom plate 10, simplifies the assembly process of the tray bottom plate 10 and the frame 20, and improves the assembly efficiency of the tray bottom plate 10 and the frame 20. For example, the third support protrusion 116 and the extension portion 12 are integral by hot pressing, and the material of the third support protrusion 116 is the same as the material of the extension portion 12.

[0136] In some embodiments, as shown in Figures 20 to 24, the second support protrusions 115 are multiple, and the multiple second support protrusions 115 are respectively provided on both side edges of the bottom plate 1111 in the first direction. In this case, at least one second support protrusion 115 is provided on each side edge of the bottom plate 1111 in the first direction, and the frame 20 supports both side edges of the bottom plate 1111 in the first direction, thereby effectively ensuring stable placement of the battery core 201 by the frame 20, which is advantageous for reducing the load-bearing demand of the bottom plate body 11 and simplifying the structure of the frame 20.

[0137] In some embodiments, as shown in Figures 17, 20 and 22, the extension portion 12 is formed with a plurality of escape through holes 112b, the escape through holes 112b being the same material as the escape through holes 122 in the above embodiments, and the plurality of escape through holes 112b are spaced apart along the periphery of the bottom plate body 11, in which case the plurality of escape through holes 112b are provided around the bottom plate body 11, and at least one third support protrusion 116 is provided between any two adjacent escape through holes 112b, thereby ensuring that the third support protrusion 116 effectively limits the thickness of the third adhesive member, which is advantageous for improving the uniformity of the thickness of the third adhesive member and ensuring the balance of the adhesive strength of the third adhesive member.

[0138] When one or more third support protrusions 116 are provided between two adjacent relief through holes 112b, the number of third support protrusions 116 between the two adjacent relief through holes 112b is equal to or different from the number of third support protrusions 116 between any other two adjacent relief through holes 112b for the extension portion 12. For example, in the example of FIG. 20, one third support protrusion 116 is provided between any two adjacent relief through holes 112b.

[0139] As can be understood, when the tray bottom plate 10 is applied to the battery tray 100, the tray bottom plate 10 is fixedly connected to the frame 20, and the frame 20 is connected to the top cover of the battery pack 200 by a fastener, thereby protecting the battery core 201; for example, a top cover is provided on the upper side of the tray bottom plate 10, and the fastener fixes and connects the top cover to the frame 20, and the fastener is inserted into the relief through-hole 112b, which can effectively avoid the fastener.

[0140] In the example of Figure 17, the extension portion 12 includes a plurality of extension sections 1121, and the plurality of extension sections 1121 are connected in sequence end-to-end to form the extension portion 12 in a polygonal ring shape, and each extension section 1121 has a plurality of escape through holes 112b formed therein, and the plurality of through holes 120 in each extension section 1121 may be spaced apart along the longitudinal direction of the extension section 1121.

[0141] In some embodiments, as shown in Figures 20 to 22, at least one third support protrusion 116 extends in an elongated manner along the width direction of the extension portion 12, and the length of the third support protrusion 116 is greater than the diameter of the relief through hole 112b, so that the third support protrusion 116 can completely separate two adjacent relief through holes 112b to better limit the thickness of the third adhesive member.

[0142] In some embodiments, as shown in Figures 20 to 22, at least one third support protrusion 116 extends in a long shape along the width direction of the extension portion 12, and the length of the third support protrusion 116 is more than half the width of the extension portion 12 and is smaller than the width of the extension portion 12, thereby easily improving the limiting effect of the third support protrusion 116 on the overall thickness of the third adhesive member.

[0143] In some embodiments, as shown in Figures 21 and 24, the height of the second support protrusion 115 is h2, i.e., the distance between the bottom surface of the second support protrusion 115 and the bottom surface of the bottom plate 1111 is h2, or the distance between the surface of the second support protrusion 13 away from the bottom surface of the bottom plate 1111 and the bottom surface of the bottom plate 1111 is h2, and is 0.5 mm≦h2≦1.5 mm, thereby ensuring that the fourth adhesive accommodating area has sufficient adhesive accommodating space, ensuring the adhesive strength of the second adhesive member, and facilitating processing of the second support protrusion 115.

[0144] In some embodiments, as shown in FIG. 21 , the height of the third support protrusion 116 is h3, i.e., the distance between the bottom surface of the third support protrusion 116 and the bottom surface of the extension portion 12 is h3, or the distance between the surface of the third support protrusion 116 away from the bottom surface of the extension portion 12 and the bottom surface of the extension portion 12 is h3, where 0.5 mm≦h3≦1.5 mm, thereby ensuring that the fifth adhesive receiving area has sufficient adhesive receiving space, ensuring the adhesive strength of the third adhesive member, and facilitating processing of the third support protrusion 116.

[0145] In some embodiments, the height of the second support protrusion 115 is h2 and the height of the third support protrusion 116 is h3, where 0.5 mm≦h2≦1.5 mm and 0.5 mm≦h3≦1.5 mm.

[0146] In the description of the present application, the meaning of "and / or" includes three parallel schemes, for example, "A and / or B" includes scheme A, scheme B, or a scheme in which A and B are simultaneously satisfied.

[0147] A battery tray 100 according to an embodiment of the second aspect of the present application includes a tray bottom plate 10 and a frame 20, as shown in Figures 23 and 24, where the tray bottom plate 10 is the tray bottom plate 10 according to the embodiment of the first aspect of the present application, and the frame 20 is provided around the tray bottom plate 10 and fixedly connected to the tray bottom plate 10.

[0148] The battery tray 100 according to the embodiment of the present application is advantageous in improving the processing efficiency of the battery tray 100 by using the tray bottom plate 10 described above.

[0149] For example, in the example of Figures 23 and 24, the frame 20 is supported on the bottom of the tray bottom plate 10 and is located outside the mounting groove 111, thereby achieving indirect and stable mounting of the battery core 201 by the frame 20.

[0150] In some embodiments, as shown in FIG. 24 , the bottom plate body 11 includes a bottom plate 1111 and a side plate 1112, the side plate 1112 is arranged around the bottom plate 1111, and the side plate 1112 and the bottom plate 1111 together define a mounting groove 111, a second support protrusion 115 is provided on the bottom surface of the bottom plate 1111, the bottom surface of the bottom plate 1111 is adhesively fixed to the frame 20 by a second adhesive member, the second support protrusion 115 and the bottom surface of the bottom plate 1111 together define a fourth adhesive receiving area, and the fourth adhesive receiving area is fixed to the second adhesive member. The second support protrusion 115 accommodates the component, and abuts against and engages with the frame 20, and the second support protrusion 115 extends toward the center of the mounting groove 111 so as to be flush with at least the inner edge portion of the frame 20, i.e., w≧0, thereby ensuring the consistency of the thickness of the entire second adhesive member, ensuring the adhesive strength of the second adhesive member, and ensuring reliable adhesion between the bottom plate 1111 and the frame 20, and further allowing the portion of the frame 20 supporting the bottom plate 1111 to be the main load-bearing portion of the battery core 201.

[0151] In some embodiments, the side plate 1112 and the frame 20 are adhesively fixed by a fourth adhesive member to further ensure a strong connection between the tray bottom plate 10 and the frame 20 .

[0152] 23 and 24, the bottom plate body 11 further includes an extension 12, which is provided on the edge of the side plate 1112 and around the side plate 1112. The frame 20 is provided around the side plate 1112, so that the frame 20 may be formed into a substantially annular structure, and the frame 20 is fixedly connected to the extension 12, thereby ensuring a sufficient connection area between the frame 20 and the bottom plate body 11 and ensuring a reliable connection between the first frame 201 and the bottom plate body 11.

[0153] In the description of the present application, "annular" should be understood in a broad sense, i.e., it is not limited to "annular", and may be, for example, "polygonal annular", etc. For example, in the examples of Fig. 23 and Fig. 25, the frame 20, the side plate 1112, and the extension part 12 are each formed in a substantially polygonal annular shape, the frame 20 includes a plurality of edge beams connected in sequence end-to-end, and the edge beams are fixed to corresponding edges of the extension part 12 (for example, the corresponding extension section 1121 described in the present application).

[0154] In some embodiments, as shown in Figures 24 and 27, the edge beam includes a first beam body 211 and a second beam body 212, the first beam body 211 is the same member as the edge beam body 231 in the above embodiments, the second beam body 212 is the same member as the support portion 22 in the above embodiments, the first beam body 211 is fixedly connected to the extension portion 12, and the second beam body 212 is provided inside the first beam body 211 and fixedly connected to the bottom plate 1111.

[0155] For example, when the first beam body 211 and the bottom surface of the extension part 12 are adhesively fixed by the third adhesive member, there is no need to provide connection holes in either the extension part 12 or the first beam body 211, simplifying the processing steps of the first beam body 211 and the extension part 12. This ensures a large adhesive area between the edge beam and the bottom plate body 11, and effectively ensures the connection strength between the frame 20 and the bottom plate body 11.

[0156] For example, when the second beam body 212 and the bottom surface of the bottom plate 1111 are adhesively fixed by the second adhesive member and the second beam body 212 abuts and engages with the second support protrusion 115, the second beam body 212 can indirectly support the battery core 201, effectively ensuring the secure installation of the battery core 201, and is advantageous in reducing the load-bearing demand of the bottom plate body 11, reducing the installation requirements of the bottom plate body 11, and reducing the cost of the battery tray 100.

[0157] Preferably, when the edge beam includes a first beam body 211 and a second beam body 212, the first beam body 211 and the second beam body 212 are a single piece.

[0158] As can be understood, in the present application, the structure of the edge beams may be the same or different. For example, when the structure of the edge beams is the same, each edge beam includes a first beam body 211 and a second beam body 212, and when the structure of the edge beams is different, for example, at least one edge beam includes a first beam body 211 and a second beam body 212, and at least one edge beam includes the first beam body 211 but does not include the second beam body 212.

[0159] A battery pack 200 according to an embodiment of the third aspect of the present application includes a battery core 201 and a battery tray 100, the battery tray 100 being the battery tray 100 according to the embodiment of the second aspect of the present application, the mounting groove 111 accommodating the battery core 201, and the bottom surface of the mounting groove 111 being adhesively fixed to the battery core 201.

[0160] The battery pack 200 according to the embodiment of the present application can improve the assembly efficiency of the battery pack 200 by using the battery tray 100 described above.

[0161] In some embodiments, as shown in Figures 25 to 27, the number of battery cores 201 is multiple, and the multiple battery cores 201 are arranged in sequence along the second direction, the length of each battery core 201 extends along the first direction, and at least three first support protrusions 117 are supported on the bottom of each battery core 201, and the at least three first support protrusions 117 may be arranged at intervals along the first direction, where the first direction is perpendicular to the second direction to ensure stable mounting of the battery core 201, and the thickness of the first adhesive member between the battery core 201 and the bottom surface of the mounting groove 111 is relatively uniform to ensure strong attachment of the battery core 201.

[0162] In some embodiments, as shown in FIG. 25 , among the multiple first support protrusions 117 for supporting the same battery core 201, the distance between the two first support protrusions 117 located at both ends in the first direction and the corresponding ends of the battery core 201 is equal, which is advantageous in further improving the stability of the placement of the battery core 201, and the multiple first support protrusions 117 can stably support the battery core 201.

[0163] For example, assuming that the first direction is the front-to-rear direction, the multiple first support protrusions 117 corresponding to one battery core 201 are spaced apart along the front-to-rear direction, the distance between the frontmost first support protrusion 117 among the multiple first support protrusions 117 and the front end of the battery core 201 is L1, and the distance between the rearmost first support protrusion 117 and the rear end of the battery core 201 is L2, where L2=L1.

[0164] For example, the battery pack 200 further includes an expansion beam 27, which is fastened to the frame 20 by a high-strength bolt (grade 10.9 or higher) through a hole in the base plate body 11.

[0165] 1 to 11, a battery pack 200 according to an embodiment of the present application includes a battery core 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 for mounting the battery core 201, and the lid 40 is connected to a frame 20. Furthermore, the lid 40 is provided over an open end of the mounting groove 111 so as to define the mounting cavity 41, the extension 12 is interposed between the lid 40 and the frame 20, and a bolt penetrates the lid 40, the extension 12, and the frame 20 to integrally assemble the lid 40, the tray bottom plate 10, and the frame 20. Furthermore, a sealing member 203 (e.g., a seal ring) is interposed between the extension portion 12 and the lid body 40, and the sealing member 203 can seal the mounting cavity 41. The lid body 40 and the tray bottom plate 10 define a sealed insulating cavity (i.e., the mounting cavity 41). When the battery core 201 is inserted into the mounting cavity 41, the battery core 201 and the frame 20 are completely separated, the battery core 201 is in a completely insulated environment, and the battery pack 200 has no risk of leakage current.

[0166] 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 ring structure, the lid body 40, the sealing member 203 and the extension portion 12 being interposed between the pressure plate 202 and the frame 20, and bolts penetrating the pressure plate 202, the lid body 40, the extension portion 12 and the frame 20 can integrally assemble the pressure plate 202, the lid body 40, the tray bottom plate 10 and the frame 20, and the pressure plate 202 can uniformly press the entire sealing member 203 to ensure reliable sealing of the mounting cavity 41.

[0167] The vehicle 2000 according to the embodiment of the present application includes the battery pack 200 according to the above embodiment, and the battery pack 200 is mounted on the vehicle 2000 to supply electric energy to the vehicle 2000. The frame 20 of the battery pack 200 supports most of the weight of the battery core 201, and the tray bottom plate 10 supports only a small portion of the weight of the battery core 201. The tray bottom plate 10 mainly plays a sealing role. It is possible to use a tray bottom plate 10 made of a lightweight composite material, which is advantageous for the lightweight design and cost reduction of the battery tray 100, the battery pack 200 and the 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 grind the weld beads and perform airtightness inspection of the battery tray 100, thereby improving the production 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.

[0168] 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.

[0169] 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. A battery tray (100) including a tray bottom plate (10) and a frame (20), The tray bottom plate (10) includes a bottom plate body (11) defining a mounting groove (111) for mounting a battery core (201), and a bottom wall (113) of the mounting groove (111) has a pressure-receiving area (112) for supporting the battery core (201); The bottom plate main body (11) is attached to the frame (20), the frame (20) has a support portion (22) for supporting the bottom plate main body (11), and in the height direction of the battery tray (100), an orthogonal projection of the support portion (22) and an orthogonal projection of the pressure-receiving area (112) have an overlapping area.

2. The battery tray (100) according to claim 1, wherein the tray bottom plate (10) further includes an extension portion (12) extending along an outer peripheral edge of the bottom plate main body (11), 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).

3. 3. The battery tray (100) according to claim 1 or 2, wherein the frame (20) 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 being positioned on opposite sides along a first direction, and the third edge beam and the fourth edge beam being positioned on opposite sides along a second direction, the first edge beam, the second edge beam, the third edge beam, and the fourth edge beam being connected to form an installation space (21), the bottom plate body (11) is mounted within the installation space (21), the first edge beam and / or the second edge beam is provided with the support portion (22), and one of the first direction and the second direction is a longitudinal direction of the battery tray (100), and the other is a width direction of the battery tray (100).

4. 4. The battery tray (100) of claim 3, wherein the support portion (22) of the first edge beam is provided adjacent to a lower end of the first edge beam and / or the support portion (22) of the second edge beam is provided adjacent to a lower end of the second edge beam.

5. 3. The battery tray (100) according to claim 2, wherein an upper end of the mounting groove (111) is open, and the extension portion (12) extends in a circumferential direction along the open end of the mounting groove (111).

6. The battery tray (100) according to any one of claims 1 to 5, wherein a surface of the support portion (22) adjacent to the tray bottom plate (10) is configured to be flat.

7. The battery tray (100) according to any one of claims 1 to 6, wherein the support portion (22) is located below the base plate body (11) and fixedly connected to the base plate body (11).

8. The battery tray (100) according to any one of claims 1 to 7, wherein the tray bottom plate (10) is configured as a one-piece molding.

9. 4. The battery tray (100) of claim 3, wherein at least one of the first edge beam and the second edge beam includes an edge beam body (231) connected to a corresponding support (22), the edge beam body (231) defining a cavity, within which a connecting plate (232) is provided, the connecting plate (232) connecting at an angle between a top wall (233) and a bottom wall (234) of the cavity and dividing the cavity into a plurality of sub-cavities (235).

10. A first side wall (236) of the cavity remote from the mounting space (21) is connected between the top wall (233) and the bottom wall (234) of the cavity, and the first side wall (236) is connected to the connecting plate (232); 10. The battery tray (100) of claim 9, wherein a second side wall (237) adjacent to the mounting space (21) of the cavity is connected between the top wall (233) and the bottom wall (234) of the cavity, and the second side wall (237) is connected to the connecting plate (232).

11. A first connection portion (238) extending toward the inside of the cavity is connected to a lower end of the first side wall (236), and the first side wall (236) is connected to the bottom wall (234) of the cavity and the connection plate (232) via the first connection portion (238), and the first connection portion (238) is fixedly connected to the bottom wall (234) of the cavity; A second connection portion (239) extending toward the inside of the cavity is connected to an upper end of the second side wall (237), and the second side wall (237) is connected to the top wall (233) of the cavity and the connection plate (232) via the second connection portion (239), and the second connection portion (239) is fixedly connected to the top wall (233) of the cavity; 11. The battery tray (100) of claim 10, wherein said cavity top wall (233), said cavity bottom wall (234), said first side wall (236), and said second side wall (237) together define said cavity.

12. 11. The battery tray (100) of claim 10, wherein the support portion (22) is connected to a lower end of the second side wall (237), and the second side wall (237) is connected to the bottom wall (234) of the cavity via the support portion (22).

13. The battery tray (100) according to any one of claims 1 to 12, wherein the frame (20) is a metallic part and the tray bottom plate (10) is an insulating part.

14. 3. The battery tray (100) of claim 2, further comprising a sealing structure (13), wherein the frame (20) defines an installation space (21), the bottom plate body (11) is installed within the installation space (21), the extension portion (12) is located outside the installation space (21), the extension portion (12) is provided with an escape through hole (122) for a fastener to pass therethrough, and the sealing structure (13) seals the escape through hole (122).

15. The battery tray (100) of claim 14, wherein the sealing structure (13) is provided between the extension portion (12) and the frame (20) and corresponds to the relief through hole (122), and / or the sealing structure (13) is provided within the relief through hole (122) and seals the relief through hole (122).

16. The battery tray (100) of claim 14, wherein the extension (12) sealingly connects to the frame (20) by a sealing structure (13).

17. The battery tray (100) according to any one of claims 14 to 16, wherein the sealing structure (13) is plural, and the plural sealing structures (13) are provided sequentially at intervals.

18. A battery tray (100) as described in any one of claims 14 to 17, wherein the support portion (22) extends toward the mounting space (21), and the sealing structure (13) is provided between the support portion (22) and the bottom plate main body (11).

19. The frame (20) includes a side edge beam (23), a front end beam (24) and a rear end beam (25), the side edge beam (23), the front end beam (24) and the rear end beam (25) being connected to form the mounting space (21), and the side edge beam (23) and / or the front end beam (24) and / or the rear end beam (25) having the support portion (22).A battery tray (100) as described in any one of claims 14 to 18.

20. 20. The battery tray (100) of claim 19, wherein the support portion (22) is provided proximate a lower end of the side edge beam (23).

21. A battery tray (100) as described in any one of claims 14 to 20, wherein a first rib (121) is provided on a surface of the extension portion (12) facing the frame (20), and the surface of the extension portion (12) facing the frame (20) and the first rib (121) define a first adhesive containing area.

22. The battery tray (100) of claim 21, wherein the extension portion (12) is provided with a plurality of the escape through holes (122), the plurality of escape through holes (122) being spaced apart in a circumferential direction of the extension portion (12), and the first rib (121) is provided between at least two adjacent escape through holes (122) among the plurality of the escape through holes (122).

23. 15. The battery tray (100) of claim 14, wherein a boss protruding toward the frame (20) is provided on a surface of the extension portion (12) facing the frame (20), the surface of the extension portion (12) facing the frame (20) and the boss define a first adhesive receiving area, and the boss is arranged around the relief through hole (122).

24. A battery tray (100) as described in claim 14, wherein a second rib (114) corresponding to the support portion (22) is provided on a surface of the bottom plate body (11) facing the support portion (22), the surface of the bottom plate body (11) facing the support portion (22) and the second rib (114) define a second adhesive accommodating area, and the second rib (114) abuts against the support portion (22).

25. The battery tray (100) according to claim 24, wherein an end of the second rib (114) adjacent to the mounting space (21) in a direction from the frame (20) to the mounting space (21) extends from the support portion (22).

26. The battery tray (100) according to any one of claims 1 to 25, wherein a bottom wall (113) of the mounting groove (111) is adhesively fixed to the battery core (201) by a first adhesive member, the tray bottom plate (10) further includes a first support protrusion (117), the first support protrusion (117) is provided on the bottom wall (113) of the mounting groove (111) and protrudes from the bottom wall (113) of the mounting groove (111), the first support protrusion (117) and the bottom wall (113) of the mounting groove (111) together define a third adhesive accommodating area (11a), the third adhesive accommodating area (11a) accommodates the first adhesive member, the first support protrusion (117) supports the battery core (201), and the first support protrusion (117) and the bottom plate main body (11) are integral with each other.

27. 27. The battery tray (100) of claim 26, wherein a plurality of first support protrusions (117) spaced apart along a first direction constitute a protrusion group (18), the number of the protrusion groups (18) is plural, the plurality of protrusion groups (18) are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

28. 28. The battery tray (100) of claim 27, wherein projections of the first support protrusions (117) of two adjacent protrusion groups (18) along the first direction partially overlap.

29. The battery tray (100) according to any one of claims 26 to 28, wherein the height of the first support protrusion (117) is h1, and 0.5 mm≦h1≦1.5 mm.

30. The bottom plate body (11) includes a bottom plate (1111) and a side plate (1112), the side plate (1112) is arranged around the bottom plate (1111), and the side plate (1112) and the bottom plate (1111) together define the mounting groove (111). A second support protrusion (115) is provided on the bottom surface of the bottom plate (1111), and the bottom surface of the bottom plate (1111) is adhesively fixed to the frame (20) by a second adhesive member. The second support protrusion (115) and the bottom surface of the bottom plate (1111) together define a fourth adhesive accommodating area, the fourth adhesive accommodating area accommodates a second adhesive member, and the second support protrusion (115) abuts against and engages with the frame (20). The battery tray (100) of any one of claims 26 to 29, wherein the extension portion (12) of the tray bottom plate (10) is provided on the edge portion of the side plate (1112) and is provided around the side plate (1112), a third support protrusion (116) is provided on a bottom surface of the extension portion (12), the bottom surface of the extension portion (12) is adhesively fixed to the frame (20) by a third adhesive member, the third support protrusion (116) and the bottom surface of the extension portion (12) together define a fifth adhesive accommodating area, the fifth adhesive accommodating area accommodates a third adhesive member, and the third support protrusion (116) abuts against and engages with the frame (20).

31. The battery tray (100) of claim 30, wherein the second support protrusions (115) are multiple and the multiple second support protrusions (115) are provided on both side edges of the bottom plate (1111) in the first direction.

32. The battery tray (100) of claim 30, wherein the extension portion (12) is formed with a plurality of relief through holes (112b), the relief through holes (112b) being spaced apart along the periphery of the bottom plate body (11), and at least one of the third support protrusions (116) being provided between any two adjacent relief through holes (112b).

33. 31. The battery tray (100) of claim 30, wherein the height of the second support protrusion (115) is h2 and 0.5 mm≦h2≦1.5 mm, and / or the height of the third support protrusion (116) is h3 and 0.5 mm≦h3≦1.5 mm.

34. 31. The battery tray (100) of claim 30, wherein the second support protrusion (115) extends toward a center of the mounting groove (111) so as to be flush with at least an inner edge of the frame (20).

35. A battery core (201), A battery tray (100) according to any one of claims 1 to 34, and A battery pack (200) including a cover body (40), The lid body (40) and the tray bottom plate (10) together define a mounting cavity (41) for mounting the battery core (201), and the lid body (40) is connected to the frame (20).

36. 36. The battery pack (200) according to claim 35, wherein the tray bottom plate (10) is mounted within the mounting space (21) of the battery tray (100), and the lid body (40) is sealingly connected to the tray bottom plate (10).

37. 37. The battery pack (200) of claim 36, further comprising a sealing member (203), the sealing member (203) being disposed between the tray bottom plate (10) and the lid (40).

38. 36. The battery pack (200) according to claim 35, wherein the cover (40) covers an open end of the mounting groove (111) and defines the mounting cavity (41).

39. 38. The battery pack (200) according to claim 37, wherein the sealing member (203) is provided between the extension portion (12) of the tray bottom plate (10) and the lid body (40).

40. A battery pack (200) as described in claim 39, wherein in the height direction of the battery pack (200), the extension portion (12) and the cover body (40) are both located above the frame (20), and the extension portion (12) is arranged to correspond to the cover body (40).

41. The battery pack (200) of claim 39 further includes a pressure plate (202), and the extension portion (12), the sealing member (203) and the cover body (40) are disposed between the pressure plate (202) and the frame (20).

42. The battery pack (200) according to claim 41, wherein the extension portion (12), the sealing member (203) and the pressing plate (202) are all configured as annular structures.

43. 42. The battery pack (200) of claim 41, wherein the retainer plate (202) is connected to the frame (20) by a fastener.

44. The battery pack (200) of claim 43, wherein the extension portion (12), the sealing member (203), the cover body (40), the pressing plate (202) and the frame (20) are all provided with assembly holes (50) that engage with the fasteners.

45. A vehicle (2000) comprising a battery pack (200) according to any one of claims 35 to 44.

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