Tray protection plate structure, battery tray, battery pack and electric equipment

Abstract

The embodiment of the invention provides a tray protection plate structure, a battery tray, a battery pack and electric equipment, and belongs to the technical field of batteries. The tray protection plate structure comprises a back plate used for being connected with a battery tray; the panel is arranged on one side, deviating from the battery tray, of the back plate; the buffering plate assembly is arranged between the back plate and the face plate, the buffering plate assembly comprises an energy absorption plate and a supporting piece arranged in the energy absorption plate, and the energy absorption plate is connected with the back plate and the face plate. When the tray protection plate structure is impacted, the combined structure of the energy absorption plate and the supporting piece can absorb and disperse impact energy, the impact force transmitted to the battery tray and the battery module in the battery tray is reduced, and the energy absorption effect of the tray protection plate structure is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a tray guard structure, a battery tray, a battery pack, and an electrical device. Background Technology

[0002] In the battery systems of new energy vehicles, the safety of the battery pack is of paramount importance.

[0003] In the battery pack, the battery tray is used to support the battery modules, and the tray guard structure is set at the bottom of the battery tray to protect the battery tray and the battery modules.

[0004] However, existing pallet guard structures have poor energy absorption performance when subjected to impact. Summary of the Invention

[0005] This application provides a tray guard structure, a battery tray, a battery pack, and electrical equipment to solve the problem of poor energy absorption effect of existing tray guard structures when subjected to impact.

[0006] In a first aspect, embodiments of this application provide a pallet guard structure, including:

[0007] Backplate, used for connection to the battery tray;

[0008] The panel is located on the side of the back panel away from the battery tray;

[0009] A buffer plate assembly is disposed between a back plate and a front plate. The buffer plate assembly includes an energy-absorbing plate and a support member disposed within the energy-absorbing plate. The energy-absorbing plate connects the back plate and the front plate.

[0010] In one possible implementation, the pallet guard structure provided in this application embodiment has a support member that is a hollow tube embedded in an energy-absorbing plate, with part of the energy-absorbing plate located inside the hollow tube.

[0011] In one possible implementation, the pallet guard structure provided in this application embodiment has multiple hollow tubes arranged at intervals along the length or width direction of the energy-absorbing plate.

[0012] Alternatively, hollow tubes can be wound around the energy-absorbing plate at intervals along its length and width.

[0013] In one possible implementation, the pallet guard structure provided in this application embodiment has hollow tubes spaced apart along the length direction of the energy-absorbing plate, and the length of each hollow tube is less than or equal to the width of the energy-absorbing plate.

[0014] Alternatively, hollow tubes can be spaced apart along the width of the energy-absorbing plate, with the length of each hollow tube being less than or equal to the length of the energy-absorbing plate.

[0015] In one possible implementation, the pallet guard structure provided in this application embodiment has a spaced distance between the peripheral edge of the energy-absorbing plate and the hollow tube.

[0016] In one possible implementation, the pallet guard structure provided in this application embodiment uses hollow tubing, which is at least one of hollow aluminum tubing, hollow steel tubing, and hollow titanium steel tubing.

[0017] In one possible implementation, the pallet guard structure provided in this application has a hollow tube with a wall thickness greater than or equal to 0.3 mm and less than or equal to 0.6 mm.

[0018] In one possible implementation, the pallet guard structure provided in this application embodiment has a back plate and a front plate spaced apart to form a receiving cavity, and a hollow tube is disposed in the receiving cavity;

[0019] The cavity is filled with foam material, which covers the outside of the hollow tube and some of the foam material is injected into the hollow tube to form an energy-absorbing plate.

[0020] In one possible implementation, the tray guard structure provided in this application uses a metal-based foam material as the foaming material.

[0021] In one possible implementation, the pallet guard structure provided in this application embodiment uses at least one of aluminum-based foam, magnesium-based foam, and steel-based foam materials as the metal-based foam material.

[0022] In one possible implementation, the pallet guard structure provided in this application embodiment has a back panel including a main board portion and a surrounding board portion, with the surrounding board portion surrounding the periphery of the main board portion and the density of the surrounding board portion being less than the density of the main board portion.

[0023] In one possible implementation, the tray guard structure provided in this application embodiment has the projection of the support member toward the main board portion located inside the main board portion.

[0024] In one possible implementation, the pallet guard structure provided in this application embodiment has a main plate portion and a surrounding plate portion with a thickness greater than or equal to 0.5 mm and less than or equal to 1.0 mm.

[0025] In one possible implementation, the pallet guard structure provided in this application embodiment has a main plate portion and a surrounding plate portion with the same thickness.

[0026] In one possible implementation, the pallet guard structure provided in this application embodiment has a main body made of steel plate and a surrounding plate made of fiberglass board.

[0027] In one possible implementation, the tray guard structure provided in this application embodiment has a panel thickness greater than or equal to 1.0 mm and less than or equal to 2.0 mm.

[0028] In one possible implementation, the pallet guard structure provided in this application embodiment has a panel made of at least one of Kevlar fiberboard, carbon fiber board, or glass fiberboard.

[0029] In one possible implementation, the pallet guard structure provided in this application embodiment comprises a front panel, a buffer plate assembly, and a back panel that are sequentially bonded together.

[0030] Secondly, embodiments of this application provide a battery tray, including a tray body and a tray guard structure disposed at the bottom of the tray body.

[0031] Thirdly, embodiments of this application provide a battery pack, including a battery pack body and a battery tray disposed on the battery pack body.

[0032] Fourthly, embodiments of this application provide an electrical device, including a device body and a battery pack disposed on the device body.

[0033] The tray protector structure, battery tray, battery pack, and electrical equipment provided in this application embodiment include a tray protector structure comprising a back plate, a front plate, and a buffer plate assembly. The buffer plate assembly is disposed between the back plate and the front plate, forming a multi-layered protective structure. This ensures that all parts can work together to maintain the integrity of the structure when subjected to external forces such as impacts, thereby improving the protective capability of the tray protector structure. The buffer plate assembly includes an energy-absorbing plate and a support member disposed within the energy-absorbing plate. When the tray protector structure is impacted, the combined structure of the energy-absorbing plate and the support member can absorb and disperse the impact energy. Compared with existing tray protector structures, this significantly improves the energy absorption effect, reduces the impact force transmitted to the battery tray and the battery modules within the battery tray, and thus better protects the battery. Therefore, the energy absorption effect of the tray protector structure is improved. Attached Figure Description

[0034] 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.

[0035] Figure 1 This is a schematic diagram of the tray guard structure and battery tray provided in the embodiments of this application;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of the middle pallet guard plate;

[0037] Figure 3 for Figure 2 A schematic diagram of the disassembled structure of the middle pallet guard plate;

[0038] Figure 4 for Figure 3A partial schematic diagram of a hollow tube fitting;

[0039] Figure 5 for Figure 1 Assembly diagram of the middle tray guard plate structure and the battery tray;

[0040] Figure 6 for Figure 5 Sectional view along the AA direction;

[0041] Figure 7 for Figure 6 Enlarged view of section B in the middle.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100 - Back panel; 110 - Main board section; 120 - Enclosure section;

[0044] 200 - Panel; 210 - Connection hole; 220 - Weight reduction hole;

[0045] 300 - Buffer plate assembly; 310 - Energy-absorbing plate; 320 - Support component; 321 - Hollow tube component;

[0046] 400 - Battery tray; 410 - First frame; 420 - Second frame; 430 - Crossbeam; 440 - Base plate.

[0047] The accompanying drawings illustrate 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 particular embodiments. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features can be combined with each other.

[0049] In the battery pack, the battery tray is used to support the battery modules, and the tray guard structure is set at the bottom of the battery tray to protect the battery tray and the battery modules.

[0050] However, existing tray protector structures are usually single-plate structures that are glued or snapped to the bottom of the battery tray. This results in poor energy absorption when the tray protector structure is subjected to impact, insufficient protection for the battery tray, and the tray protector structure is prone to detaching from the bottom of the battery tray after long-term use, resulting in low connection reliability.

[0051] To overcome the deficiencies in the prior art, the present application provides a tray guard structure, a battery tray, a battery pack, and electrical equipment. The tray guard structure includes a back plate, a front panel, and a buffer plate assembly. The buffer plate assembly is disposed between the back plate and the front panel, forming a multi-layered protective structure. This ensures that all parts can work together to maintain the integrity of the structure when subjected to external forces such as impacts, thereby improving the protective capability of the tray guard structure. The buffer plate assembly includes an energy-absorbing plate and a support member disposed within the energy-absorbing plate. When the tray guard structure is impacted, the combined structure of the energy-absorbing plate and the support member can absorb and disperse the impact energy. Compared with existing tray guard structures, this significantly improves the energy absorption effect and reduces the impact force transmitted to the battery tray and the battery modules within the battery tray, thus better protecting the battery. Therefore, the energy absorption effect of the tray guard structure is improved.

[0052] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0053] Reference Figures 1 to 7 As shown, this application embodiment provides a pallet guard structure, including:

[0054] Back panel 100, the back panel 100 is used to connect to battery tray 400;

[0055] Panel 200 is located on the side of the back panel 100 opposite to the battery tray 400;

[0056] A buffer plate assembly 300 is disposed between a back plate 100 and a front panel 200. The buffer plate assembly 300 includes an energy-absorbing plate 310 and a support member 320 disposed within the energy-absorbing plate 310. The energy-absorbing plate 310 connects the back plate 100 and the front panel 200.

[0057] The back panel 100 is used to connect to the battery tray 400, and the panel 200 is disposed on the side of the back panel 100 away from the battery tray 400, so that the panel 200 can cover the bottom of the back panel 100 and the battery tray 400.

[0058] Specifically, both the back panel 100 and the front panel 200 can be connected to the bottom of the battery tray 400 using fasteners. Both the back panel 100 and the front panel 200 have connection holes 210. The fasteners can be bolts or rivets. These connection holes 210 connect the back panel 100, the front panel 200, and the battery tray 400, improving the reliability of the connection between the tray cover structure and the battery tray 400. Weight-reduction holes 220 are also provided on the back panel 100 and the front panel 200 to reduce their weight.

[0059] A buffer plate assembly 300 is disposed between the back plate 100 and the front panel 200. The buffer plate assembly 300 includes an energy-absorbing plate 310 connecting the back plate 100 and the front panel 200. When the front panel 200 of the tray guard structure is subjected to an impact, the impact force is transmitted from the front panel 200 to the energy-absorbing plate 310. After the energy is absorbed by the energy-absorbing plate 310, it is then transmitted to the back plate 100 and the battery tray 400 in sequence. Through the energy-absorbing plate 310, the energy absorption effect transmitted to the tray guard structure is improved, and the impact force transmitted to the battery tray 400 is reduced.

[0060] The buffer plate assembly 300 also includes a support member 320 disposed within the energy-absorbing plate 310. The support member 320 can enhance the impact resistance of the energy-absorbing plate 310 and disperse part of the impact force absorbed by the energy-absorbing plate 310 onto the support member 320, thereby further enhancing the energy absorption effect of the pallet guard structure.

[0061] Therefore, the tray guard structure provided in this application embodiment includes a back plate 100, a front panel 200, and a buffer plate assembly 300. The buffer plate assembly 300 is disposed between the back plate 100 and the front panel 200, forming a multi-layer protective structure. This ensures that when subjected to external forces such as impacts, each part can work together to maintain the integrity of the structure, thereby improving the protective capability of the tray guard structure. The buffer plate assembly 300 includes an energy-absorbing plate 310 and a support member 320 disposed within the energy-absorbing plate 310. When the tray guard structure is impacted, the combined structure of the energy-absorbing plate 310 and the support member 320 can absorb and disperse the impact energy. Compared with existing tray guard structures, this significantly improves the energy absorption effect and reduces the impact force transmitted to the battery tray 400 and the battery modules within the battery tray 400, thereby better protecting the battery. Thus, the energy absorption effect of the tray guard structure is improved.

[0062] In some embodiments, refer to Figures 3 to 7 As shown, the support member 320 is a hollow tube 321 embedded in the energy-absorbing plate 310, and part of the energy-absorbing plate 310 is located inside the hollow tube 321.

[0063] It is understandable that the hollow tube 321 has good strength. Embedding it within the energy-absorbing plate 310, with part of the energy-absorbing plate 310 located inside it, allows the two to work together when subjected to impact. When subjected to external impact, the energy-absorbing plate 310 can absorb some energy first, while the internal hollow tube 321 will also deform upon impact and further absorb energy. The two work together to effectively improve the overall energy absorption capacity of the pallet guard structure.

[0064] In practice, the diameter of the hollow tube 321 should be smaller than the thickness of the energy-absorbing plate 310 to prevent the hollow tube 321 from being exposed to the energy-absorbing plate 310.

[0065] Among them, reference Figure 3 , Figure 4 and Figure 7 As shown, multiple hollow tubes 321 are arranged sequentially at intervals along the length or width of the energy-absorbing plate 310;

[0066] Alternatively, the hollow tube 321 may be wound around the energy-absorbing plate 310 at intervals along its length and width.

[0067] By sequentially arranging multiple hollow tubes 321 at intervals along the length or width of the energy-absorbing plate 310, or by arranging a longer hollow tube 321 at intervals, the hollow tubes 321 can be distributed more widely and evenly on the energy-absorbing plate 310. When the pallet guard structure is impacted, the hollow tubes 321 at each position can participate in the energy absorption and dispersion process, preventing energy from concentrating in one place, thereby effectively improving the overall energy absorption effect and reducing the risk of damage to local areas due to excessive force.

[0068] When the hollow tubes 321 are spaced apart along the length of the energy-absorbing plate 310, each hollow tube 321 can extend along the width of the energy-absorbing plate 310. When the hollow tubes 321 are spaced apart along the width of the energy-absorbing plate 310, each hollow tube 321 can extend along the length of the energy-absorbing plate 310, or the hollow tubes 321 can extend at an angle relative to the length and width of the energy-absorbing plate 310. When the hollow tubes 321 are spaced apart and wound around the length and width of the energy-absorbing plate 310, the hollow tubes 321 can be wound in a U-shape or an arc shape. Specifically, the setting direction, spacing distance, and number of hollow tubes 321 can be flexibly adjusted according to the application scenario and design requirements to meet the energy absorption and protection performance requirements of different battery trays 400, and to improve the flexibility and adaptability of the support 320. This application does not impose any restrictions on this.

[0069] In practice, hollow tubes 321 are spaced apart along the length of the energy-absorbing plate 310, and the length of each hollow tube 321 is less than or equal to the width of the energy-absorbing plate 310.

[0070] Alternatively, hollow tubes 321 are spaced apart along the width of the energy-absorbing plate 310, and the length of each hollow tube 321 is less than or equal to the length of the energy-absorbing plate 310.

[0071] This arrangement allows for a gap between the two ends of the hollow tube 321 extending along its length and the energy-absorbing plate 310, resulting in a reasonable distribution of the hollow tube 321 and a length that matches the energy-absorbing plate 310. This allows for better transmission and dispersion of external forces throughout the entire structure, thereby improving the overall load-bearing capacity of the pallet guard structure.

[0072] Furthermore, the peripheral edge of the energy-absorbing plate 310 is spaced from the hollow tube 321.

[0073] This arrangement allows the hollow tubes 321 to be concentrated in the central area of ​​the energy-absorbing plate 310, so that the area where the hollow tubes 321 are installed corresponds to the area where the battery modules are installed in the battery tray 400, thereby specifically improving the energy absorption effect on the battery modules.

[0074] In some embodiments, the hollow tube 321 is at least one of a hollow aluminum tube, a hollow steel tube, and a hollow titanium steel tube.

[0075] It is understandable that when the hollow tube 321 made of metal is subjected to impact, it can absorb a large amount of energy through its own plastic deformation. At the same time as absorbing energy, it can also disperse the energy along the length and circumference of the hollow tube 321, thereby improving the efficiency of energy absorption and dispersion and further enhancing the energy absorption effect of the pallet guard structure.

[0076] Hollow steel tubes possess high strength and hardness, enabling them to withstand significant impact forces and providing reliable support and protection for the pallet guard structure. Hollow aluminum tubes, on the other hand, offer advantages such as low density and light weight, reducing the overall weight of the battery tray 400 and battery pack while maintaining a certain energy absorption effect. Hollow titanium steel tubes combine the high strength, low density, and good corrosion resistance of titanium alloys, improving energy absorption performance while reducing weight and extending service life. Therefore, suitable hollow tube materials can be selected based on different application requirements and cost budgets; this application does not impose any restrictions in this regard.

[0077] In this embodiment, the hollow tube 321 is specifically configured as a hollow aluminum tube.

[0078] Furthermore, the wall thickness of the hollow tube 321 is greater than or equal to 0.3 mm and less than or equal to 0.6 mm.

[0079] This wall thickness range allows the hollow tube 321 to deform appropriately when subjected to impact, thereby effectively absorbing energy. When the wall thickness is within this range, the hollow tube 321 will not be too thin and break instantly under stress, thus failing to fully exert its energy absorption function; nor will it be too thick and difficult to deform, thus failing to effectively absorb impact energy.

[0080] Furthermore, in some embodiments, reference is made to Figures 3 to 7 As shown, the back plate 100 and the front plate 200 are spaced apart to form a receiving cavity, and the hollow tube 321 is disposed in the receiving cavity;

[0081] The cavity is filled with foam material, which covers the outside of the hollow tube 321, and part of the foam material is injected into the hollow tube 321 to form an energy-absorbing plate 310.

[0082] Foamed material fills the cavity and covers the hollow tube 321, with some of it also injected into the hollow tube 321. When impacted, the foamed material can absorb a large amount of energy through its own deformation, working together with the hollow tube 321 to form a multi-layered energy-absorbing structure. The foamed material injected into the hollow tube 321 provides internal support, preventing the hollow tube 321 from deforming or collapsing prematurely under external force, ensuring its continuous function during energy absorption, and further improving the overall performance of the energy-absorbing plate 310.

[0083] In specific implementation, the diameter of the hollow tube 321 can be determined according to the thickness of the cavity, so that the diameter of the hollow tube 321 matches the thickness of the cavity. This application does not impose any restrictions on this.

[0084] Furthermore, the foaming material is a metal-based foaming material.

[0085] It is understandable that metal-based foam materials have a unique porous structure. When subjected to impact, these pores are compressed and deformed, enabling them to absorb a large amount of energy with relatively small stress. Therefore, when the metal-based foam material fills the cavity formed by the back plate 100 and the panel 200 and covers the hollow tube 321, it forms an integral structural system with the back plate 100, the panel 200, and the hollow tube 321. This not only provides external support for the hollow tube 321, preventing excessive deformation or buckling under stress, but also evenly distributes the impact force across the entire energy-absorbing plate 310 structure, avoiding localized stress concentration and thus enhancing the structural stability of the energy-absorbing plate 310.

[0086] By adjusting parameters such as porosity, pore size, and distribution of metal-based foam materials, their energy absorption performance can be precisely controlled. Energy-absorbing panels 310 with specific energy absorption characteristics can be formed for different application scenarios and impact conditions.

[0087] Specifically, the metal-based foam material is at least one of aluminum-based foam material, magnesium-based foam material, and steel-based foam material.

[0088] It is understandable that aluminum-based and magnesium-based foam materials have lower densities, which can significantly reduce the weight of the energy-absorbing panel 310 while ensuring a certain level of energy absorption performance. Steel-based foam materials, on the other hand, have higher strength and stiffness, providing reliable structural support for the energy-absorbing panel 310. By selecting appropriate materials or combinations of materials, energy-absorbing panels 310 with different energy absorption capacities can be designed according to actual needs, meeting the buffering requirements in different scenarios.

[0089] In this embodiment, aluminum-based foaming material, i.e. filled aluminum foam, can be selected. This application does not limit this.

[0090] Furthermore, in some embodiments, reference is made to Figure 3 , Figure 6 and Figure 7 As shown, the back plate 100 includes a main plate portion 110 and a surrounding plate portion 120. The surrounding plate portion 120 is disposed around the periphery of the main plate portion 110, and the density of the surrounding plate portion 120 is less than the density of the main plate portion 110.

[0091] It is understandable that the composite backplate 100 structure can be configured with a main plate portion 110 as the primary impact-bearing area and a secondary impact-bearing area 120. A material with a higher density is selected for the main plate portion 110, and the density of the surrounding plate portion 120 is lower than that of the main plate portion 110, so as to specifically improve the structural strength of the main plate portion 110 and make the main plate portion 110 have higher impact resistance. Furthermore, by setting the surrounding plate portion 120, the overall weight of the backplate 100 is reduced, thus achieving lightweighting.

[0092] The projection of the support member 320 toward the motherboard portion 110 is located inside the motherboard portion 110.

[0093] It is understandable that the overall area of ​​the support member 320 corresponds to the area of ​​the battery module in the battery tray 400. This makes the main board 110, as the main impact-bearing area of ​​the back plate 100, also correspond to the area of ​​the battery module. When an impact occurs, it can accurately absorb and disperse the impact force in the area where the battery module is located, and specifically disperse the impact energy from the battery module, reducing the direct impact force on the battery module.

[0094] Furthermore, this allows for a more rational structural design of the battery tray 400, enabling optimized design based on the actual layout of the battery modules, improving space utilization, and making the entire tray cover structure and battery tray 400 structure more compact and efficient.

[0095] In practice, the thickness of both the main board portion 110 and the surrounding plate portion 120 is greater than or equal to 0.5 mm and less than or equal to 1.0 mm.

[0096] As the main impact-bearing area of ​​the backplate 100, the mainboard section 110, with a thickness of 0.5mm or more, ensures sufficient strength to withstand external impacts. It is designed to prevent easy breakage or severe deformation upon impact, effectively protecting critical components such as the internal battery module. The surrounding plate section 120, located around the mainboard section 110, also requires sufficient strength to help maintain the structural integrity of the mainboard section 110, preventing structural damage at the edges and ensuring the stability of the entire energy-absorbing structure.

[0097] The thickness of the main plate portion 110 and the surrounding plate portion 120 is less than or equal to 1.0 mm, which prevents the main plate portion 110 and the surrounding plate portion 120 from being too thick and heavy, thus retaining a certain degree of flexibility. When subjected to impact, they can deform appropriately to absorb and disperse energy, rather than rigidly resisting the impact, avoiding stress concentration due to excessive rigidity, thereby improving the energy absorption effect.

[0098] Furthermore, the thickness of the main board portion 110 and the surrounding plate portion 120 is the same.

[0099] The main plate 110 and the surrounding plate 120, which are of uniform thickness, can more evenly bear and disperse impact forces, avoid stress concentration caused by thickness differences, and make the entire back plate 100 structure more stable.

[0100] Furthermore, when installing the backplate 100, since the main board 110 and the surrounding plate 120 have the same thickness, it is easier to position and install them, reducing errors and adjustment time during the installation process, and improving installation efficiency and quality.

[0101] In some embodiments, the main board portion 110 is a steel plate, and the surrounding plate portion 120 is a fiberglass board.

[0102] Steel plates possess high strength and good toughness, enabling them to withstand significant impact forces. As the main body 110, it provides robust support, effectively resisting deformation and damage when the energy-absorbing panel 310 is subjected to external impacts, thus protecting critical internal components. Fiberglass panels, with their high specific strength and specific modulus, are used as the surrounding panel 120, working in conjunction with the main body 110 to further enhance the overall strength of the energy-absorbing panel 310. Therefore, this design combining steel plates and fiberglass panels satisfies the mechanical performance requirements of the energy-absorbing panel 310 while achieving lightweight construction.

[0103] In addition, in some embodiments, the thickness of panel 200 is greater than or equal to 1.0 mm and less than or equal to 2.0 mm.

[0104] A thickness of 1.0mm or more ensures that the panel 200 has sufficient strength and rigidity, making it less prone to deformation or damage under normal use. A thickness of 2.0mm or less prevents the panel 200 from being too heavy, keeping it relatively lightweight.

[0105] Specifically, panel 200 is at least one of Kevlar fiberboard, carbon fiber board, or fiberglass board.

[0106] Kevlar, carbon fiber, and glass fiber all possess high strength and modulus. Kevlar has high tensile strength, making it less prone to breakage under tensile stress; carbon fiber has extremely high specific strength and specific modulus, enabling weight reduction while maintaining structural strength; and glass fiber also offers good strength and rigidity. This enhances the overall load-bearing capacity of panel 200, allowing it to withstand greater external forces without deformation or damage.

[0107] In this embodiment, the panel 200 is made of Kevlar fiberboard to give the panel 200 a higher specific strength and a lighter weight.

[0108] Furthermore, in some embodiments, the panel 200, the buffer plate assembly 300, and the back plate 100 are bonded together in sequence.

[0109] After the three parts are bonded together, they form a solid whole, which enhances the structural stability of the components and effectively prevents the separation of the panels 200, buffer plates and back plates 100 during use.

[0110] Reference Figures 1 to 7 As shown, this application embodiment also provides a battery tray 400, including a tray body and a tray guard structure as described in any of the above embodiments disposed at the bottom of the tray body.

[0111] The pallet guard structure has been described in detail in the above embodiments and will not be repeated here.

[0112] The pallet body includes two first side frames 410 and two second side frames 420 arranged opposite to each other. The first side frames 410 and the second side frames 420 are together enclosing and connected to the base plate 440. A crossbeam 430 is provided on the base plate 440, and the two ends of the crossbeam 430 are respectively connected to the second side frames 420.

[0113] When the pallet guard structure is connected to the pallet body, an assembly gap may be left between the bottom plate 440 and the back plate 100, and this application does not impose any restrictions on this.

[0114] This application also provides a battery pack, including a battery pack body and a battery tray 400 as described in the above embodiments disposed on the battery pack body.

[0115] This application also provides an electrical device, including a device body and a battery pack as described in the above embodiments disposed on the device body.

[0116] In summary, the battery tray 400, battery pack, and electrical equipment provided in this application embodiment, by setting a tray guard structure, including a back plate 100, a front panel 200, and a buffer plate assembly 300, with the buffer plate assembly 300 disposed between the back plate 100 and the front panel 200, form a multi-layer protective structure. This ensures that when subjected to external forces such as impacts, all parts can work together to maintain the integrity of the structure, thereby improving the protective capability of the tray guard structure. The buffer plate assembly 300 includes an energy-absorbing plate 310 and a support member 320 disposed within the energy-absorbing plate 310. When the tray guard structure is impacted, the combined structure of the energy-absorbing plate 310 and the support member 320 can absorb and disperse the impact energy. Compared with existing tray guard structures, this significantly improves the energy absorption effect, reduces the impact force transmitted to the battery tray 400 and the battery modules within the battery tray 400, and thus better protects the battery. Therefore, the energy absorption effect of the tray guard structure is improved.

[0117] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0118] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0119] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0120] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pallet guard structure, characterized in that, include: A backplate (100) for connection to a battery tray (400); A panel (200) is disposed on the side of the back panel (100) opposite to the battery tray (400); A buffer plate assembly (300) is disposed between the back plate (100) and the front panel (200). The buffer plate assembly (300) includes an energy-absorbing plate (310) and a support member (320) disposed within the energy-absorbing plate (310). The energy-absorbing plate (310) connects the back plate (100) and the front panel (200).

2. The pallet guard structure according to claim 1, characterized in that, The support member (320) is a hollow tube (321) embedded in the energy-absorbing plate (310), and part of the energy-absorbing plate (310) is located inside the hollow tube (321).

3. The pallet guard structure according to claim 2, characterized in that, Multiple hollow tubes (321) are arranged sequentially at intervals along the length or width of the energy-absorbing plate (310); Alternatively, the hollow tube (321) may be wound around the energy-absorbing plate (310) at intervals along its length and width.

4. The pallet guard structure according to claim 3, characterized in that, The hollow tubes (321) are spaced apart along the length of the energy-absorbing plate (310), and the length of each hollow tube (321) is less than or equal to the width of the energy-absorbing plate (310). Alternatively, the hollow tubes (321) are spaced apart along the width direction of the energy-absorbing plate (310), and the length of each hollow tube (321) is less than or equal to the length of the energy-absorbing plate (310).

5. The pallet guard structure according to claim 3, characterized in that, The peripheral edge of the energy-absorbing plate (310) is spaced from the hollow tube (321).

6. The pallet guard structure according to claim 3, characterized in that, The hollow tube (321) is at least one of hollow aluminum tube, hollow steel tube and hollow titanium steel tube.

7. The pallet guard structure according to claim 3, characterized in that, The wall thickness of the hollow tube (321) is greater than or equal to 0.3 mm and less than or equal to 0.6 mm.

8. The pallet guard structure according to any one of claims 2-7, characterized in that, The back plate (100) and the front panel (200) are spaced apart to form a receiving cavity, and the hollow tube (321) is disposed in the receiving cavity; The cavity is filled with foamed material, which covers the outside of the hollow tube (321), and part of the foamed material is injected into the hollow tube (321) to form the energy-absorbing plate (310).

9. The pallet guard structure according to claim 8, characterized in that, The foaming material is a metal-based foaming material.

10. The pallet guard structure according to claim 9, characterized in that, The metal-based foam material is at least one of aluminum-based foam material, magnesium-based foam material, and steel-based foam material.

11. The pallet guard structure according to any one of claims 2-7, characterized in that, The back plate (100) includes a main plate portion (110) and a surrounding plate portion (120), the surrounding plate portion (120) being disposed around the periphery of the main plate portion (110), and the density of the surrounding plate portion (120) being less than the density of the main plate portion (110).

12. The pallet guard structure according to claim 11, characterized in that, The projection of the support member (320) toward the main board portion (110) is located within the main board portion (110).

13. The pallet guard structure according to claim 11, characterized in that, The thickness of both the main board portion (110) and the surrounding plate portion (120) is greater than or equal to 0.5 mm and less than or equal to 1.0 mm.

14. The pallet guard structure according to claim 13, characterized in that, The thickness of the main board portion (110) and the surrounding plate portion (120) is the same.

15. The pallet guard structure according to claim 11, characterized in that, The main board (110) is made of steel plate, and the surrounding board (120) is made of fiberglass board.

16. The pallet guard structure according to any one of claims 2-7, characterized in that, The thickness of the panel (200) is greater than or equal to 1.0 mm and less than or equal to 2.0 mm.

17. The pallet guard structure according to any one of claims 2-7, characterized in that, The panel (200) is at least one of Kevlar fiberboard, carbon fiber board or glass fiberboard.

18. The pallet guard structure according to any one of claims 2-7, characterized in that, The panel (200), the buffer plate assembly (300), and the back plate (100) are bonded together in sequence.

19. A battery tray (400), characterized in that, It includes a pallet body and a pallet guard structure disposed at the bottom of the pallet body, as described in any one of claims 1-18.

20. A battery pack, characterized in that, It includes a battery pack body and a battery tray (400) as described in claim 19 disposed on the battery pack body.

21. An electrical appliance, characterized in that, It includes a device body and a battery pack as described in claim 20, which is disposed on the device body.

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