Lifting lug assembly, battery tray, battery pack and electric equipment

Abstract

The utility model provides a lifting lug assembly, a battery tray, a battery pack and electric equipment. The lifting lug assembly is connected with the tray body and comprises a first lifting lug and a second lifting lug, the second lifting lug and the first lifting lug are oppositely arranged in the first direction and connected, a cavity is defined by the second lifting lug and the first lifting lug, and the end, close to the tray body, of at least one of the second lifting lug and the first lifting lug inclines outwards so that the end can expand outwards. The lifting lug assembly is used for achieving the effect of reliability.

Description

Technical Field

[0001] This application relates to the field of vehicle component technology, and in particular to a lifting lug assembly, a battery tray, a battery pack, and electrical equipment. Background Technology

[0002] With the development of science and technology and the continuous increase in energy demand, battery packs are being used more and more widely. Battery packs typically include a battery tray to secure battery cells, battery modules, etc., ensuring their safe operation. The battery tray includes the tray body and lifting lugs mounted on the tray body, used for the transport and securing of the battery tray or battery pack.

[0003] However, the lugs have low stiffness and are prone to deformation. Utility Model Content

[0004] This application provides a lifting lug assembly, a battery tray, a battery pack, and electrical equipment to improve reliability.

[0005] In a first aspect, embodiments of this application provide a lifting lug assembly configured to connect to a tray body, the lifting lug assembly comprising:

[0006] First hanging lug;

[0007] The second lifting lug is disposed opposite to and connected to the first lifting lug along a first direction. The second lifting lug and the first lifting lug form a cavity. At least one of the second lifting lug and the first lifting lug has its end adjacent to the tray body inclined outward so that the end expands outward.

[0008] In some possible implementations, the first lug includes an upper plate and two first side plates;

[0009] The two first side plates are respectively connected to opposite sides of the upper plate, and the two first side plates are inclined at one end adjacent to the pallet body.

[0010] In some possible implementations, the first side plate includes:

[0011] A first plate and a second plate, wherein the second plate is connected to one end of the first plate adjacent to the tray body;

[0012] Along the direction close to the tray body, the distance between the two second plates gradually increases; and / or, the two first plates are arranged in parallel.

[0013] In some possible implementations, the second lug includes a lower plate and two second side plates;

[0014] The two second side plates are respectively connected to opposite sides of the lower plate, and each second side plate is stacked and connected to one of the first side plates.

[0015] In some possible implementations, the first lifting lug is provided with a first through hole, and the second lifting lug is provided with a second through hole, with the first through hole and the second through hole facing each other along the first direction;

[0016] The lifting lug assembly also includes a bushing, which is disposed in the first through hole and the second through hole and is connected to both the first lifting lug and the second lifting lug.

[0017] In some possible implementations, the lug assembly further includes:

[0018] A patch is disposed on the pallet body, and the patch is provided with the first lifting lug and the second lifting lug. The patch is welded to the pallet body.

[0019] In some possible implementations, the lug assembly further includes:

[0020] A first outer edge is disposed at one end of the first lifting lug adjacent to the tray body and disposed on the patch. The first outer edge is welded to the patch and the first outer edge is integrally formed with the first lifting lug.

[0021] And / or, a second outer edge is disposed at one end of the second lug adjacent to the tray body and disposed on the patch, the second outer edge being welded to the patch and integrally formed with the second lug.

[0022] Secondly, embodiments of this application provide a battery tray, including: a tray body, and a lug assembly disposed on the tray body as described above.

[0023] Thirdly, embodiments of this application provide a battery pack, including the battery tray as described above.

[0024] Fourthly, embodiments of this application provide an electrical device including the battery pack described above.

[0025] In the lifting lug assembly, battery tray, battery pack, and electrical equipment provided in this application embodiment, the second lifting lug and the first lifting lug are arranged opposite to each other and connected along a first direction. The second lifting lug and the first lifting lug form a cavity. At least one of the second lifting lug and the first lifting lug has its end adjacent to the tray body inclined outward to expand that end. This end is connected to the tray body, and its outward inclination can serve as a support structure for the first lifting lug and / or the second lifting lug, improving the reliability of the connection between the first lifting lug and / or the second lifting lug and the tray body. Furthermore, the first lifting lug and / or the second lifting lug itself has no weld seams, which can save welding processes, reduce failure points, and improve its own reliability. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 A schematic diagram of the pallet body and lifting lug assembly provided in this application;

[0028] Figure 2 A schematic diagram of the lug assembly provided in this application;

[0029] Figure 3 An exploded view of the lug assembly provided in this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10 - Tray body;

[0032] 20-Lifting lug assembly;

[0033] 21-First hanging lug;

[0034] 22 - Second hanging lug;

[0035] 23-Patch;

[0036] 24 - First outer edge;

[0037] 25 - Second outer edge;

[0038] 26-Bushing;

[0039] 27-Cavity;

[0040] 31-upper plate;

[0041] 32 - First side plate;

[0042] 33 - First through hole;

[0043] 34 - Reinforcing rib;

[0044] 41-Lower plate;

[0045] 42 - Second side plate;

[0046] 43 - Second through hole;

[0047] 50 - Rivet Nut.

[0048] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0049] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0050] In related technologies, the battery pack is connected to the vehicle body via lifting lugs. To test the performance of the battery pack, a slide test is usually required. The slide test simulates the mechanical performance of the battery pack under conditions such as rapid acceleration, rapid deceleration, and collision. One type of load condition is shown below (series test): Negative X: 70g / 10ms, half-sine; Positive Y: 70g / 10ms, half-sine; Negative Z: 40g / 10ms, half-sine.

[0051] In the aforementioned sliding table test, to reduce tearing and deformation of the lifting lug, triangular supports were welded to both sides of the lug for reinforcement. However, this increases the number of weld seams and welding steps, and the location of the triangular supports is also a common welding failure point, reducing the reliability of the lug. A longer lug design can also be used, which often includes a cold-drawn tube and a triangular tube positioned below it for support. However, this type of lug is heavy, reduces the energy density of the battery pack, wastes materials, and increases manufacturing costs.

[0052] The lifting lug assembly provided in this application improves the reliability of the connection between the first and / or second lifting lugs and the pallet body by tilting the end of the first and / or second lifting lugs adjacent to the pallet body outward to form a support. Furthermore, the first and / or second lifting lugs themselves are seamless, saving welding steps, reducing failure points, and improving their own reliability.

[0053] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0054] This application provides an electrical device, which can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. Electric vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.

[0055] The aforementioned electrical equipment includes a battery pack, which stores and provides electrical energy. The battery pack, for example, is a lithium-ion battery pack, which has high specific energy per cell and low internal resistance, resulting in good driving range. The embodiments of this application do not limit the specific type of battery pack; it can be selected as needed.

[0056] For example, an electric vehicle may have a battery pack internally located at the bottom, front, or rear of the vehicle. The battery pack can be used to power the electric vehicle; for example, it can serve as the operating power source. The electric vehicle may also include a controller and a motor. The controller controls the battery pack to supply power to the motor, for example, to meet the power requirements for starting, navigation, and driving the electric vehicle. In some embodiments of this application, the battery pack can not only serve as the operating power source for the electric vehicle but also as its drive power source, replacing or partially replacing fuel or natural gas to provide driving power.

[0057] A battery pack comprises battery cells, which are the smallest units that make up the battery pack. A battery pack contains multiple cells. These cells can be connected in series, parallel, or a combination thereof. Multiple cells can be combined to form a battery module, and several battery modules can then be integrated into a battery pack, i.e., the battery pack is integrated using a CTM (Cell To Module) method. Cells can also be directly combined to form a battery pack, i.e., the battery pack is integrated using a CTP (Cell to Pack) method. In other examples, the battery pack can also be integrated using a CTB (Cell To Body) method.

[0058] See Figures 1 to 3The battery pack also includes a battery tray for carrying the battery cells. The battery tray includes a tray body 10 and a lifting lug assembly 20. Exemplarily, the tray body 10 includes a base plate, side beams, and expansion beams. The base plate is, for example, a flat plate. The side beams are disposed on one side of the base plate and form a receiving groove with the base plate. The receiving groove is, for example, cuboid, cylindrical, or hexagonal prism shaped. Battery cells and expansion beams are disposed within the receiving groove. The expansion beams and side beams are positioned opposite each other and spaced apart, and are fixedly connected to the base plate.

[0059] Multiple side beams can be provided, connected end to end in sequence to form a ring, such as a rectangular ring. The side beams are adapted to the base plate, for example, surrounding the edge of the base plate, to improve the strength of the pallet body 10 and reduce the deformation of the pallet body 10. The side beams and the base plate can also be formed separately, independently, or they can be formed as a single piece to achieve integration.

[0060] The lifting lug assembly 20 is connected to the pallet body 10, specifically to the side beam. The lifting lug assembly 20 can surround the pallet body 10; that is, there are multiple lifting lug assemblies 20 arranged circumferentially around the pallet body 10. Each lifting lug assembly 20 includes a first lifting lug 21 and a second lifting lug 22. The first and second lifting lugs 21 are arranged opposite to each other and connected along a first direction. The second lifting lug 22 and the first lifting lug 21 form a cavity 27. At least one of the second lifting lug 22 and the first lifting lug 21 has its end adjacent to the pallet body 10 inclined outwards to expand that end.

[0061] The lifting lug assembly 20 includes a separately configured first lifting lug 21 and a second lifting lug 22. The first lifting lug 21 and the second lifting lug 22 can be formed separately, for example, both can be stamped. The first lifting lug 21 and the second lifting lug 22 are opposite each other along a first direction, such as the height direction of the side beam. Figure 1 The Z direction is shown. The first lug 21 is, for example, an upper lug, and the second lug 22 is, for example, a lower lug, with the first lug 21 located above the second lug 22. The first lug 21 and the second lug 22 are connected to each other, for example, by welding, to form a cavity 27 to facilitate the installation of other structures, such as bushings 26.

[0062] The first lifting lug 21 and / or the second lifting lug 22 have their ends adjacent to the pallet body 10 inclined outwards to widen this end. This end, connected to the pallet body 10, serves as a support structure for the first lifting lug 21 and / or the second lifting lug 22, improving the reliability of the connection between the first lifting lug 21 and / or the second lifting lug 22 and the pallet body 10. Furthermore, the first lifting lug 21 and / or the second lifting lug 22 themselves are seamless, saving welding steps, reducing potential failure points, and improving their own reliability.

[0063] In some possible examples, such as Figures 1 to 3As shown, the end of the first lifting lug 21 adjacent to the pallet body 10 is inclined outward, and the end of the first lifting lug 21 adjacent to the pallet body 10 extends outward along the direction close to the pallet body 10. In some other possible examples, the end of the second lifting lug 22 adjacent to the pallet body 10 extends outward. In other possible examples, the ends of both the first lifting lug 21 and the second lifting lug 22 adjacent to the pallet body 10 extend outward.

[0064] It is understood that the outward inclination of the first lifting lug 21 and / or the second lifting lug 22 near the end of the pallet body 10 means that the first lifting lug 21 and / or the second lifting lug 22 have an expansion section near the pallet body 10, and the cross-sectional size of the expansion section continuously increases along the direction close to the pallet body 10, and the cross-sectional profile of the expansion section continuously increases.

[0065] See Figure 2 and Figure 3 The first lifting lug 21 includes an upper plate 31 and two first side plates 32. The two first side plates 32 are respectively connected to opposite sides of the upper plate 31, and the two first side plates 32 are inclined at one end near the pallet body 10. The two first side plates 32 are respectively located on opposite sides of the upper plate 31 and on the surface of the upper plate 31 facing the second lifting lug 22. For example, the two first side plates 32 and the upper plate 31 are integrally stamped.

[0066] The two first side plates 32 and the top plate 31 can be aligned at one end adjacent to the pallet body 10. Furthermore, the two first side plates 32 are inclined at one end adjacent to the pallet body 10, that is, the two first side plates 32 are inclined to provide support. This can replace the traditional welded structure of lifting lugs and triangular supports, simplifying the structure, saving materials, and improving reliability.

[0067] In some possible examples, the first side panel 32 includes: a first panel and a second panel, the second panel being connected to one end of the first panel adjacent to the pallet body 10; the distance between the two second panels gradually increases along the direction close to the pallet body 10; and / or, the two first panels are arranged in parallel.

[0068] like Figure 2 As shown, the first plate and the second plate can be an integral structure and both can be flat. One end of the first plate and one end of the second plate are connected, and the second plate is adjacent to the tray body 10. The first plates of the two first side plates 32 are opposite each other, and the second plates of the two first side plates 32 are opposite each other. Along the direction close to the tray body 10, the distance between the two second plates gradually increases, so that the two second plates are inclined relative to the tray body 10 and relative to the first plate.

[0069] The first plates of the two first side plates 32 can be arranged in parallel to facilitate their adaptation to the second lifting lug 22. The first plates of the two first side plates 32 can also be arranged at an angle, for example, with the distance between the two first plates gradually increasing in the direction away from the pallet body 10.

[0070] To increase the structural strength of the first lifting lug 21, the upper plate 31 may also be provided with at least one reinforcing rib 34, which extends, for example, in a direction away from the pallet body 10. In some possible examples, the surface of the upper plate 31 may be ribbed to form a racetrack-shaped reinforcing rib 34.

[0071] In some possible examples, the lug assembly 20 further includes a first outer edge 24, which is disposed at one end of the first lug 21 adjacent to the pallet body 10, and is integrally formed with the first lug 21. Specifically, the first outer edge 24 surrounds the end of the first lug 21 adjacent to the pallet body 10 and is integrally stamped with the first lug 21.

[0072] like Figure 2 and Figure 3 As shown, the first outer edge 24 is disposed at one end of the upper plate 31 and the two first side plates 32 adjacent to the pallet body 10. The first outer edge 24 is disposed parallel to the surface of the pallet body 10 opposite to it to facilitate connection. By providing the first outer edge 24, the connection area between the lifting lug assembly 20 and the pallet body 10 can be increased, thereby increasing the reliability of the connection between the lifting lug assembly 20 and the pallet body 10.

[0073] Continue reading Figure 2 and Figure 3 The second lifting lug 22 includes a lower plate 41 and two second side plates 42. The two second side plates 42 are respectively connected to opposite sides of the lower plate 41, and each second side plate 42 is stacked and connected to a first side plate 32. The two second side plates 42 are located on opposite sides of the lower plate 41 and on the surface of the lower plate 41 facing the first lifting lug 21. For example, the two second side plates 42 and the lower plate 41 are integrally stamped. The two first side plates 32 can be arranged parallel or inclined.

[0074] In this configuration, the lower plate 41 and the upper plate 31 are opposite each other along a first direction. Two second side plates 42 and two first side plates 32 are located between the upper plate 31 and the lower plate 41, and they correspond one-to-one. Each of the two second side plates 42 corresponds to one first side plate 32, and the corresponding first side plates 32 and second side plates 42 can be welded together. For example, the second side plate 42 is in contact with the first plate body of the corresponding first side plate 32, for example, by stacking and welding them together. The second side plate 42 and the second plate body of the first side plate 32 are spaced apart.

[0075] like Figure 2As shown, two first side plates 32 are located outside the two second side plates 42, and corresponding first side plates 32 and second side plates 42 are stacked. The inner surface of the first side plate 32 is in contact with the outer surface of the second side plate 42 to improve the connection strength between the first side plate 32 and the second side plate 42. In other examples, two first side plates 32 are located inside the two second side plates 42, and corresponding first side plates 32 and second side plates 42 are stacked. The outer surface of the first side plate 32 is in contact with the inner surface of the second side plate 42.

[0076] At least one of the first lifting lug 21 and the second lifting lug 22 can also be connected to other structures, such as to a protective plate. At least one of the first lifting lug 21 and the second lifting lug 22 can be provided with a third through hole for connecting a rivet nut 50. For example... Figure 3 As shown, the second lifting lug 22 is provided with a third through hole and is connected to a rivet nut 50.

[0077] In some possible examples, the lug assembly 20 further includes a second outer edge 25, which is disposed at one end of the second lug 22 adjacent to the pallet body 10, and is integrally formed with the second lug 22. Specifically, the second outer edge 25 surrounds a portion of the second lug 22 at the end adjacent to the pallet body 10 and is integrally stamped with the second lug 22.

[0078] like Figure 1 and Figure 3 As shown, the second outer edge 25 is disposed at one end of the lower plate 41 adjacent to the pallet body 10. The second outer edge 25 is disposed parallel to the surface of the pallet body 10 directly opposite it to facilitate connection. By providing the second outer edge 25, the connection area between the lifting lug assembly 20 and the pallet body 10 can be increased, thereby increasing the reliability of the connection between the lifting lug assembly 20 and the pallet body 10.

[0079] To enable the connection function of the lifting lug assembly 20, the first lifting lug 21 is provided with a first through hole 33, and the second lifting lug 22 is provided with a second through hole 43, with the first through hole 33 and the second through hole 43 facing each other along a first direction. The lifting lug assembly 20 also includes a bushing 26, which is disposed within the first through hole 33 and the second through hole 43 and is connected to both the first lifting lug 21 and the second lifting lug 22. By providing the bushing 26, which has a central hole for fasteners to pass through, the lifting lug assembly 20 is connected to the vehicle body.

[0080] The first through hole 33 penetrates the upper plate 31, and the second through hole 43 penetrates the lower plate 41. The bushing 26 is disposed within both the first through hole 33 and the second through hole 43, which can prevent the fasteners from wearing down the inner walls of the first through hole 33 and the second through hole 43. The fastener is, for example, a bolt. The head of the bolt abuts against the surface of the bushing 26 away from the first lifting lug 21, and the shank of the bolt mates with a threaded hole on the vehicle body.

[0081] The bushing 26 is molded separately, for example, by cold heading, which ensures the flatness of the top surface of the bushing 26. The bushing 26 can be welded to both the upper plate 31 and the lower plate 41 to ensure a reliable connection between the bushing 26 and these plates. In some possible examples, the end face of the bushing 26 away from the second lifting lug 22 can protrude beyond the end face of the first lifting lug 21 away from the second lifting lug 22; that is, one end of the bushing 26 extends beyond the first lifting lug 21. This end can abut against the vehicle body, reducing excessive wear caused by direct contact between the surface of the first lifting lug 21 and the vehicle body.

[0082] In some possible examples, the lifting lug assembly 20 also includes a patch 23 disposed on the pallet body 10. The patch 23 has a first lifting lug 21 and a second lifting lug 22, and is welded to the pallet body 10. The patch 23 can be stamped. By providing the patch 23, which supports the first lifting lug 21 and the second lifting lug 22 and is welded to the pallet body 10, the spacing between the weld seams can be increased, reducing stress concentration and failure between the lifting lug assembly 20 and the pallet body 10, and ensuring a reliable connection between the lifting lug assembly 20 and the pallet body 10. The patch 23 may also have multiple fourth through holes.

[0083] Based on the above example, the lifting lug assembly 20 further includes a first outer edge 24 and a second outer edge 25. The first outer edge 24 and the first lifting lug 21 are integrally formed, and the second outer edge 25 and the second lifting lug 22 are integrally formed. The first outer edge 24 is bonded to the opposing surfaces of the patch 23, and the first outer edge 24 and the patch 23 are welded together; the second outer edge 25 is bonded to the opposing surfaces of the patch 23, and the second outer edge 25 is welded together with the patch 23. In this way, a reliable connection can be ensured between the first outer edge 24 and the patch 23, and between the second outer edge 25 and the patch 23, thereby achieving a reliable connection between the lifting lug assembly 20 and the pallet body 10.

[0084] The lifting lug assembly 20 provided in this embodiment is connected to the pallet body 10. The lifting lug assembly 20 includes a first lifting lug 21 and a second lifting lug 22. The second lifting lug 22 and the first lifting lug 21 are disposed opposite to each other and connected along a first direction. The second lifting lug 22 and the first lifting lug 21 form a cavity 27. At least one of the second lifting lug 22 and the first lifting lug 21 has its end adjacent to the pallet body 10 inclined outward to expand that end. This end is connected to the pallet body 10, and its outward inclination can serve as a support structure for the first lifting lug 21 and / or the second lifting lug 22, improving the reliability of the connection between the first lifting lug 21 and / or the second lifting lug 22 and the pallet body 10. Furthermore, the first lifting lug 21 and / or the second lifting lug 22 themselves have no weld seams, which can save welding processes, reduce failure points, and improve their own reliability.

[0085] The embodiments or implementation methods described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. In this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0086] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A lifting lug assembly, characterized in that, Configured to connect to the tray body, the lifting lug assembly includes: First hanging lug; The second lifting lug is disposed opposite to and connected to the first lifting lug along a first direction. The second lifting lug and the first lifting lug form a cavity. At least one of the second lifting lug and the first lifting lug has its end adjacent to the tray body inclined outward so that the end expands outward.

2. The lifting lug assembly according to claim 1, characterized in that, The first lifting lug includes an upper plate and two first side plates; The two first side plates are respectively connected to opposite sides of the upper plate, and the two first side plates are inclined at one end adjacent to the pallet body.

3. The lifting lug assembly according to claim 2, characterized in that, The first side plate includes: A first plate and a second plate, wherein the second plate is connected to one end of the first plate adjacent to the tray body; Along the direction close to the tray body, the distance between the two second plates gradually increases; and / or, the two first plates are arranged in parallel.

4. The lifting lug assembly according to claim 2, characterized in that, The second lifting lug includes a lower plate and two second side plates; The two second side plates are respectively connected to opposite sides of the lower plate, and each second side plate is stacked and connected to one of the first side plates.

5. The lifting lug assembly according to claim 1, characterized in that, The first lifting lug is provided with a first through hole, and the second lifting lug is provided with a second through hole, with the first through hole and the second through hole being opposite to each other along the first direction; The lifting lug assembly also includes a bushing, which is disposed in the first through hole and the second through hole and is connected to both the first lifting lug and the second lifting lug.

6. The lifting lug assembly according to claim 1, characterized in that, The lug assembly also includes: A patch is disposed on the pallet body, and the patch is provided with the first lifting lug and the second lifting lug. The patch is welded to the pallet body.

7. The lifting lug assembly according to claim 6, characterized in that, The lug assembly also includes: A first outer edge is disposed at one end of the first lifting lug adjacent to the tray body and disposed on the patch. The first outer edge is welded to the patch and the first outer edge is integrally formed with the first lifting lug. And / or, a second outer edge is disposed at one end of the second lug adjacent to the tray body and disposed on the patch, the second outer edge being welded to the patch and integrally formed with the second lug.

8. A battery tray, characterized in that, include: The pallet body, and the lug assembly as described in any one of claims 1-7 disposed on the pallet body.

9. A battery pack, characterized in that, Includes the battery tray as described in claim 8.

10. An electrical appliance, characterized in that, Includes the battery pack as described in claim 9.

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