Plate structure and battery box

Abstract

The utility model discloses a plate structure and battery box, plate structure includes: first plate body, second plate body and connecting rib plate, first plate body and second plate body are parallel and are spaced apart along first direction, connecting rib plate is connected between first plate body and second plate body, connecting rib plate is inclined along second direction, the first direction and the second direction are perpendicular to each other, the plate structure further comprises collapse assisting rib blocks, the collapse assisting rib blocks are arranged on the side face, facing the connecting rib plate, of the first plate body or arranged on the side face, facing the connecting rib plate, of the second plate body and located in a projection plane perpendicular to the first direction, and the projection of at least part of the collapse assisting rib blocks is located in the projection of the connecting rib plate. According to the plate structure provided by the embodiment of the utility model, the structure of the plate structure is stable, and meanwhile, the collapse-assisting rib blocks can enable the whole plate structure to easily absorb energy through deformation when the whole plate structure is subjected to a certain acting force, so that impact is effectively buffered, and peripheral parts are protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to box body technical field especially is related to a board structure and battery box. BACKGROUND

[0002] As the core component of new energy vehicles, power battery is not only the power source of vehicles, but also gradually becomes one of the most important components of vehicle chassis and power, and the reliability of the structure plays an important role in the safety of the battery and even the vehicle. With the large-scale promotion of electric vehicles and the increase of market share, the safety problems caused by the bottom scraping of electric vehicles are particularly prominent, and as an important safety component of electric vehicles, the structural integrity of power battery is very critical to the safety of vehicles.

[0003] In the related art, the battery box body bottom plate is designed as an extruded aluminum profile, and the profile bottom plate is a double-layer structure (a bottom layer, a top layer and a reinforcing rib connecting the bottom layer and the top layer). When the bottom layer of the battery box body is subjected to impact and extrusion, the bottom layer will deform due to impact and extrusion and extrude the top layer through the reinforcing rib. Since the reinforcing rib is not easy to collapse, the top layer supporting the battery cell will deform, which will extrude the battery cell, the battery module or the liquid cooling plate, and is prone to cause the risk of thermal runaway of the battery cell. SUMMARY

[0004] The utility model aims at at least solves one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide a board structure, the structure of the board structure is stable, at the same time, the collapse of the reinforcing rib block can make the whole board structure easy to absorb energy by deformation when subjected to a certain force, thereby effectively buffering the impact and protecting the surrounding components.

[0005] The board structure according to the utility model embodiment comprises: a first plate body, a second plate body and a connecting rib plate, the first plate body and the second plate body are parallel and spaced apart along a first direction, the connecting rib plate is connected between the first plate body and the second plate body, and the connecting rib plate is inclined along a second direction, wherein the first direction and the second direction are perpendicular to each other, and the board structure further comprises: a collapse assisting rib block, the collapse assisting rib block is arranged on the side of the first plate body facing the connecting rib plate or the side of the second plate body facing the connecting rib plate, and in the projection plane perpendicular to the first direction, at least part of the projection of the collapse assisting rib block is located in the projection of the connecting rib plate.

[0006] According to the plate structure, the plate structure is composed of a first plate body, a second plate body and an inclined connecting rib plate, the connecting rib plate can reasonably share and transfer load, and structural stability is ensured.

[0007] In some embodiments of the utility model, the connecting rib plate is provided with multiple, at least one of the connecting rib plate is correspondingly provided with the assist crushing rib block.

[0008] In some embodiments of the utility model, the inclination angle of at least two of the connecting rib plate is different.

[0009] In some embodiments of the utility model, the inclination angle of one of the connecting rib plate is a, and the inclination angle of another connecting rib plate is b, and a + b = 180 DEG is satisfied.

[0010] In some embodiments of the utility model, the inclination angle a of the connecting rib plate satisfies: 25 DEG ≤ a ≤ 65 DEG.

[0011] In some embodiments of the utility model, multiple assist crushing rib blocks are located on the first plate body, or multiple assist crushing rib blocks are located on the second plate body.

[0012] In some embodiments of the utility model, in the direction perpendicular to the connecting rib plate, the distance D between the connecting rib plate and the assist crushing rib block satisfies: D ≥ 1mm.

[0013] In some embodiments of the utility model, in the first direction, the thickness H of the plate structure satisfies: 8mm ≤ H ≤ 20mm, the thickness H1 of the first plate body satisfies: 1.5mm ≤ H1 ≤ 2.5mm, the thickness H2 of the second plate body satisfies: 1.5mm ≤ H2 ≤ 2.5mm, and in the direction perpendicular to the thickness of the connecting rib plate, the thickness H3 of the connecting rib plate satisfies: 1.5mm ≤ H3 ≤ 2.5mm.

[0014] In some embodiments of the utility model, the assist crushing rib block is one of cylinder, circular truncated cone, prism, truncated prism, cone or pyramid, or the assist crushing rib block is a columnar structure, and the surface of the assist crushing rib block towards the connecting rib plate is a plane, a conical surface or an arc surface.

[0015] In some embodiments of this utility model, the plate structure further includes two side plates, which are located on both sides of the first plate body and the second plate body in the second direction. The side plates are connected between the first plate body and the second plate body, so that the plate structure is constructed as a cavity with openings on both sides in the third direction.

[0016] In some embodiments of this utility model, the plate structure is a one-piece die-cast metal plate, or the plate structure is welded together from multiple plates.

[0017] This utility model also proposes a battery box having a plate structure as described in the above embodiments.

[0018] The battery box according to an embodiment of the present utility model includes: a box body and a box cover. The box body includes a bottom plate and a surrounding plate connected to the outer periphery of the bottom plate, wherein the bottom plate includes the plate structure described in the above embodiment.

[0019] According to the battery box of this utility model embodiment, the base plate adopts this plate structure. The stable plate structure provides stable support for the battery and resists vibration and bumps. In the event of a collision, the energy absorption characteristics of the plate structure can buffer the impact and protect the battery. At the same time, the specially designed plate structure optimizes the stress distribution of the battery box, avoids stress concentration damage to the battery, extends the battery box life, ensures battery safety, and improves the reliability and durability of the battery box.

[0020] Additional aspects and advantages of this 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. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the box in one embodiment.

[0023] Figure 2 This is a schematic diagram of a plate structure according to one embodiment.

[0024] Figure 3 This is a schematic diagram of a plate structure as the base plate in one embodiment.

[0025] Figure 4 yes Figure 3 A magnified view of region c in the middle.

[0026] Figure label:

[0027] 100. Box body; 10. Base plate; 20. Enclosure panels;

[0028] 30. Plate structure;

[0029] 1, first plate body; 2, second plate body; 3, connecting rib plate; 4, assist crushing rib block; 5, edge plate;

[0030] X, first direction; Y, second direction; Z, third direction; DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] In the description of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Reference will now be made to Figures 1-4 The plate structure 30 according to the embodiments of the present application is described.

[0035] As Figures 2-4As shown, the plate structure 30 according to the embodiment of the present application comprises a first plate body 1, a second plate body 2 and a connecting rib plate 3, the first plate body 1 and the second plate body 2 are parallel and arranged at intervals along a first direction X, the connecting rib plate 3 is connected between the first plate body 1 and the second plate body 2, and the connecting rib plate 3 is arranged obliquely along a second direction Y, wherein the first direction X and the second direction Y are perpendicular to each other, and the plate structure 30 further comprises: an assisted crushing rib block 4, the assisted crushing rib block 4 is arranged on a side of the first plate body 1 facing the connecting rib plate 3 or a side of the second plate body 2 facing the connecting rib plate 3, and in a projection plane perpendicular to the first direction X, a projection of at least part of the assisted crushing rib block 4 is located within a projection of the connecting rib plate 3.

[0036] That is, the first plate body 1 and the second plate body 2 are parallel and arranged at intervals along the first direction X, which provides a stable support frame for the entire structure. The connecting rib plate 3 is arranged obliquely along the second direction Y perpendicular to the first direction X, forming a stable connection between the two plate bodies. The obliquely arranged connecting rib plate 3 can effectively share the load from different directions and reasonably transmit and disperse the force to the first plate body 1 and the second plate body 2. Just like a stable triangular structure, multiple connecting rib plates 3 work together to make the plate structure 30 maintain its overall integrity when subjected to various external forces such as pressure and tension, and is not easily damaged locally or collapsed as a whole, thereby ensuring good strength performance.

[0037] More importantly, the plate structure 30 is easy to deform and has excellent energy absorption characteristics. When subjected to a certain impact force or impact force, a unique effect is produced due to the special arrangement of the assisted crushing rib block 4. The assisted crushing rib block 4 is located on a side of the first plate body 1 facing the connecting rib plate 3 or a side of the second plate body 2 facing the connecting rib plate 3, and in a projection plane perpendicular to the first direction X, a projection of at least part of the assisted crushing rib block 4 is located within a projection of the connecting rib plate 3. When the impact force acts, the plate structure 30 begins to deform, and the assisted crushing rib block 4 quickly interacts with the connecting rib plate 3 to apply additional force to the connecting rib plate 3, making the connecting rib plate 3 more easily deformed. The deformation of the connecting rib plate 3 further changes the shape of the entire plate structure 30, and in this process, the plate structure 30 effectively absorbs and consumes the energy of the impact force through its deformation, thereby protecting other structures or components connected thereto from damage caused by excessive impact force.

[0038] Exemplarily, in the projection plane perpendicular to the first direction X, the projection of the assisted crushing rib block 4 can be partially within the projection of the connecting rib plate 3, or the projection of the assisted crushing rib block 4 can be entirely within the projection of the connecting rib plate 3, which is not limited in the present application.

[0039] Thus, according to the plate structure 30 of the embodiment of the utility model, the plate structure 30 is composed of the first plate body 1, the second plate body 2 and the inclined connecting rib plate 3, the connecting rib plate 3 can reasonably share and transfer load, and the stability of the structure is guaranteed.

[0040] In some embodiments of the utility model, as shown in Figures 2-4 Each connecting rib plate 3 is provided with at least one assist crushing rib block 4. Thus, the connecting rib plate 3 is provided with multiple, can build up a stable framework between the first plate body 1 and the second plate body 2, and multiple connecting rib plates 3 greatly enhance the overall stability and carrying capacity of the plate structure 30, which shares external force from different angles, so that the plate structure 30 is still solid under complex stress environment. And the assist crushing rib block 4 corresponds to the connecting rib plate 3 one by one, when the plate structure 30 encounters impact force, the impact on each connecting rib plate 3 can be effectively adjusted through the corresponding assist crushing rib block 4. The assist crushing rib block 4 is the key factor of triggering deformation, which can make the connecting rib plate 3 deform in the expected way, so that the whole plate structure 30 can quickly and orderly absorb impact energy through deformation, realize efficient energy absorption and buffering effect, and guarantee the safety of the structure.

[0041] Exemplarily, each connecting rib plate 3 is provided with multiple assist crushing rib blocks 4, which can more evenly disperse impact force and avoid stress concentration in local part. On the other hand, multiple assist crushing rib blocks 4 can make the connecting rib plate 3 more easily deform, so that the plate structure 30 can more efficiently absorb energy when impacted, and enhance the energy absorption and buffering effect.

[0042] In some embodiments of the utility model, as shown in Figures 2-4 The inclination angles of at least two connecting rib plates 3 of the multiple connecting rib plates 3 are different.

[0043] In the plate structure 30, the inclination angles of at least two connecting rib plates 3 of the multiple connecting rib plates 3 are different. The connecting rib plates 3 with different inclination angles can make the plate structure 30 disperse stress from more directions, when impacted by external force, the force can be conducted and decomposed along the rib plates with different angles, greatly enhancing the adaptability of the overall structure to complex stress conditions. Moreover, the connecting rib plates 3 with different angles cooperate with the corresponding assist crushing rib blocks 4, which can make the plate structure 30 have more levels in the deformation and energy absorption process, further improve the energy absorption effect, and better protect the surrounding structure from damage.

[0044] In some embodiments of the utility model, as shown in Figures 2-4As shown, the inclination angle of one of the plurality of connecting rib plates 3 is a, and the inclination angle of the other connecting rib plate 3 is b, which satisfies: a+b=180°. This arrangement enables the two connecting rib plates 3 to cooperate with each other when subjected to force, effectively decomposing and transmitting force in opposite directions. When subjected to impact force, they act as mutually cooperating balanced force arms, allowing the plate structure 30 to be more uniformly stressed and avoiding local overloading. At the same time, in cooperation with the respective corresponding collapse assisting rib blocks 4, they can guide the orderly deformation of the plate structure 30 in different directions to absorb energy, improve the overall energy absorption and buffering capacity, and enhance the structural stability.

[0045] In some embodiments of the present application, as shown in Figures 2-4 The inclination angle a of the connecting rib plate 3 satisfies: 25°≤a≤65°. Within this angle range, the connecting rib plate 3 can more efficiently decompose and transmit the external force received by the first plate body 1 and the second plate body 2. When subjected to impact force, the inclination angle makes the force transmission direction more reasonable, avoiding excessive stress concentration and enhancing the load-bearing capacity of the plate structure 30. At the same time, it is beneficial for the collapse assisting rib block 4 to function at an appropriate angle, promoting the effective deformation of the connecting rib plate 3 under impact and improving the energy absorption effect of the entire plate structure 30.

[0046] For example, the inclination angle a of the connecting rib plate 3 is: 25°, 28°, 32°, 35°, 40°, 45°, 50°, 55°, 60°, 65°.

[0047] In some embodiments of the present application, as shown in Figures 2-4 The plurality of collapse assisting rib blocks 4 are located in the first plate body 1, or the plurality of collapse assisting rib blocks 4 are located in the second plate body 2. This arrangement makes the stress response of the plate structure 30 more regular. When subjected to impact, the collapse assisting rib blocks 4 on the same side can simultaneously act on the connecting rib plate 3, producing a synergistic effect that makes the deformation of the connecting rib plate 3 more orderly. This orderly deformation can more efficiently absorb and dissipate impact energy, avoiding local excessive deformation or damage of the plate structure 30 due to uneven stress, and ensuring the stability of the plate structure 30 during the energy absorption and buffering process.

[0048] In some embodiments of the present application, in a direction perpendicular to the connecting rib plate 3, the distance D between the connecting rib plate 3 and the collapse assisting rib block 4 satisfies: D≥1mm.

[0049] In a direction perpendicular to the connecting rib plate 3, the distance D between the connecting rib plate 3 and the collapse assisting rib block 4 is ≥1mm. Such a distance can ensure that the collapse assisting rib block 4 has enough space to function when the plate structure 30 is deformed under impact, avoiding premature interference due to too close distance and affecting the energy absorption effect. At the same time, the appropriate distance can provide a buffering area during force transmission, making the deformation more stable, allowing the plate structure 30 to more effectively absorb impact energy and improve overall safety.

[0050] Exemplarily, in the direction perpendicular to the connecting rib plate 3, the distance D between the connecting rib plate 3 and the assist crushing rib block 4 is: 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm.

[0051] In some embodiments of the utility model, in the first direction X, the thickness H of the plate structure 30 satisfies: 8mm≤H≤20mm; the thickness H1 of the first plate body 1 satisfies: 1.5mm≤H1≤2.5mm; the thickness H2 of the second plate body 2 satisfies: 1.5mm≤H2≤2.5mm; in the direction perpendicular to the thickness of the connecting rib plate 3, the thickness H3 of the connecting rib plate 3 satisfies: 1.5mm≤H3≤2.5mm.

[0052] Exemplarily, the thickness H of the plate structure 30 is: 8mm, 10mm, 12mm, 15mm, 18mm, 20mm.

[0053] The thickness H1 of the first plate body 1 is: 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm.

[0054] The thickness H2 of the second plate body 2 is: 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm.

[0055] The thickness H3 of the connecting rib plate 3 is: 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm.

[0056] In the above examples, the thickness of the plate structure 30 satisfies the above conditions, which can make the plate structure 30 have good overall strength and stability. When bearing a larger external force, it can effectively resist deformation, and at the same time, it has enough space and mass to buffer the impact in the energy absorption process, ensuring safety.

[0057] In the above examples, the thickness of the first plate satisfies the above conditions, so that the first plate body 1 has moderate flexibility on the basis of ensuring a certain strength. It can not only bear a certain pressure, but also deform with other components under impact to participate in energy absorption.

[0058] In the above examples, the thickness of the second plate satisfies the above conditions, which can stably support and flexibly cooperate with the connecting rib plate 3 and the assist crushing rib block 4 when subjected to impact force, assisting the deformation and energy absorption of the plate structure 30.

[0059] In the above examples, the thickness of the connecting rib plate satisfies the above conditions, and the connecting rib plate 3 has enough strength to connect the first plate body 1 and the second plate body 2, and can be reliable and stable when bearing and transmitting force. At the same time, it can effectively deform and absorb energy under impact according to the action of the assist crushing rib block 4.

[0060] In some embodiments of this utility model, the rupture-aiding rib block 4 is one of a cylinder, frustum, prism, frustum, cone, or pyramid; or, the rupture-aiding rib block 4 is a columnar structure, and the surface of the rupture-aiding rib block 4 facing the connecting rib plate 3 is a plane, a conical surface, or an arc surface.

[0061] In the above examples, if the cylindrical stabilizing rib 4 is used, its circular plane, when interacting with the connecting stiffener 3, can evenly distribute the impact force, generating stable pressure during deformation to induce deformation of the connecting stiffener 3. The conical or pyramidal stabilizing rib 4, with its conical surface, can decompose the impact force in different directions under stress, guiding the connecting stiffener 3 to deform and absorb energy at multiple angles. The curved surface design makes impact contact smoother and reduces stress concentration. Prismatic, frustum, and other shapes can provide stable support and decomposition forces in different directions, flexibly changing the deformation mode of the connecting stiffener 3 according to different force directions, thereby more efficiently absorbing impact energy and optimizing the energy absorption effect of the plate structure 30 under complex stress environments.

[0062] It is understandable that, in addition to cylinders, frustums, prisms, pyramids, cones, and pyramids, there are other shapes of reinforcing ribs 4 that can be applied to the plate structure 30, which will not be described in detail in this application.

[0063] In some embodiments of the present invention, the plate structure 30 further includes two side plates 5, which are located on both sides of the first plate body 1 and the second plate body 2 in the second direction Y. The side plates 5 are connected between the first plate body 1 and the second plate body 2, so that the plate structure 30 is constructed as a cavity with openings on both sides in the third direction Z.

[0064] The side plate 5 connects the first plate 1 and the second plate 2 on both sides to form a cavity structure. On the one hand, this enhances the overall rigidity of the plate structure 30, making it more stable when subjected to a third-direction Z-force. On the other hand, the cavity design with openings on both sides provides deformation space for the plate structure 30 when subjected to impact, which is conducive to the coordinated work of the connecting stiffener 3 and the tack-absorbing rib 4, better absorbing and dispersing energy, and improving the impact resistance and energy absorption effect of the plate structure 30.

[0065] In some embodiments of this utility model, the plate structure 30 is an integral part formed by die casting of a metal plate, or the plate structure 30 is formed by welding together multiple plates.

[0066] If the plate structure 30 is a single piece formed by die casting of a metal plate, its internal structure is continuous and stable, with high strength and good integrity, effectively bearing loads and impacts, and avoiding damage due to weak connections. If it is composed of multiple welded plates, each part can be flexibly designed according to actual needs, and the parameters of components such as connecting stiffeners 3 can be easily adjusted, which is more advantageous when manufacturing complex structures. At the same time, welding can also ensure a certain connection strength, meeting the performance requirements of the plate structure 30 under different working conditions.

[0067] According to the plate structure 30 of the embodiment of the present application, as shown in the figure, Figures 2-4 The plate structure 30 includes a first plate body 1, a second plate body 2, a connecting rib plate 3 and a crushing assisting rib block 4. The first plate body 1 and the second plate body 2 are parallel and spaced, the connecting rib plate 3 is inclinedly connected between the two, and the inclination angles of at least two of the plurality of connecting rib plates 3 can be different, the inclination angle a satisfies 25°≤a≤65°, which makes the stress dispersion of the plate structure 30 more reasonable. The connecting rib plate 3 has a plurality of connecting rib plates 3, each corresponding to at least one crushing assisting rib block 4, the crushing assisting rib block 4 can be located on the first plate body 1 or the second plate body 2, and the distance D between the two in the direction perpendicular to the connecting rib plate 3 is ≥1mm. In the first direction X, the thickness H of the plate structure 30 satisfies 8mm≤H≤20mm, and the thickness of the first plate body, the second plate body and the connecting rib plate 3 is between 1.5mm-2.5mm. The shape of the crushing assisting rib block 4 is various, and the surface facing the connecting rib plate 3 is a plane, a conical surface or an arc surface. This structure has high strength, can stably bear, and under impact, the crushing assisting rib block 4 promotes the deformation of the connecting rib plate 3, effectively absorbing energy.

[0068] The utility model also proposes a battery box with the plate structure 30 of the above embodiment.

[0069] As shown in the figure, Figures 1-3 The battery box according to the embodiment of the present application comprises a box body 100 and a box cover, the box body 100 comprises a bottom plate 10 and a surrounding plate 20 connected to the outer periphery of the bottom plate 10, wherein the bottom plate 10 comprises the plate structure 30 of the above embodiment.

[0070] The plate structure 30 has good strength and can provide stable support for the battery, ensuring the stability of the battery in the box body 100, resisting vibration, jolt and other situations in daily use, and protecting the battery from damage. Its easy-to-deform energy-absorbing characteristics can effectively buffer when encountering collision impact, reducing the impact force on the battery. The design of the connecting rib plate 3 and the crushing assisting rib block 4 can reasonably disperse external force and avoid stress concentration to cause local extrusion on the battery. Furthermore, this special plate structure 30 can optimize the stress distribution of the overall structure in the battery box, prolong the service life of the battery box, and ensure the safety of the battery.

[0071] According to the battery box of the embodiment of the present application, the bottom plate 10 adopts this plate structure 30, and the stable plate structure 30 provides stable support for the battery and resists vibration and jolt. When encountering collision, the energy-absorbing characteristics of the plate structure 30 can buffer the impact and protect the battery. At the same time, the specially designed plate structure 30 optimizes the stress distribution of the battery box, avoids damage to the battery caused by stress concentration, prolongs the service life of the battery box, ensures the safety of the battery, and improves the reliability and durability of the battery box.

[0072] The battery box and other configurations and operations of the plate structure 30 according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail here.

[0073] In the description of the present specification, the description referring to the terms "some embodiments", "optionally", "further", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A panel structure (30) characterized by, The plate structure (30) comprises: a first plate body (1), a second plate body (2) and a connecting rib plate (3), the first plate body (1) and the second plate body (2) are arranged in parallel and are spaced apart along a first direction (X), the connecting rib plate (3) is connected between the first plate body (1) and the second plate body (2), and the connecting rib plate (3) is arranged obliquely along a second direction (Y), wherein the first direction (X) and the second direction (Y) are perpendicular to each other, and the plate structure (30) further comprises: a collapse-assisting rib block (4) arranged on a side of the first plate body (1) facing the connecting rib plate (3) or a side of the second plate body (2) facing the connecting rib plate (3), and a projection of at least part of the collapse-assisting rib block (4) in a projection plane perpendicular to the first direction (X) is located within a projection of the connecting rib plate (3).

2. The panel structure (30) according to claim 1, characterized in that The connecting rib plate (3) is provided in a plurality, and at least one collapse-assisting rib block (4) is provided corresponding to each connecting rib plate (3).

3. The panel structure (30) according to claim 2, characterized in that The inclination angles of at least two connecting rib plates (3) in the plurality of connecting rib plates (3) are different.

4. The panel structure (30) according to claim 3, characterized in that The inclination angle of one connecting rib plate (3) in the plurality of connecting rib plates (3) is a, and the inclination angle of another connecting rib plate (3) is b, which satisfies: a+b=180°, and / or the inclination angle a of the connecting rib plate (3) satisfies: 25°≤a≤65°.

5. The panel structure (30) according to claim 2, characterized in that The plurality of collapse-assisting rib blocks (4) are all located on the first plate body (1), or the plurality of collapse-assisting rib blocks (4) are all located on the second plate body (2).

6. The plate structure (30) according to claim 1, wherein in a direction perpendicular to the connecting rib plate (3), a distance D between the connecting rib plate (3) and the collapse-assisting rib block (4) satisfies: D≥1mm; and / or in the first direction (X), a thickness H of the plate structure (30) satisfies: 8mm≤H≤20mm; a thickness H1 of the first plate body (1) satisfies: 1.5mm≤H1≤2.5mm; and a thickness H2 of the second plate body (2) satisfies: 1.5mm≤H2≤2.5mm; in a thickness direction perpendicular to the connecting rib plate (3), a thickness H3 of the connecting rib plate (3) satisfies: 1.5mm≤H3≤2.5mm.

7. The panel structure (30) according to claim 1, characterized in that The collapse-assisting rib block (4) is one of a cylinder, a circular truncated cone, a prism, a truncated prism, a circular cone or a truncated pyramid, or the collapse-assisting rib block (4) is a columnar structure, and a face of the collapse-assisting rib block (4) facing the connecting rib plate (3) is a plane, a conical surface or an arc surface.

8. The panel structure (30) according to claim 1, characterized in that Further comprising two edge plates (5) located on both sides of the second direction (Y) of the first plate body (1) and the second plate body (2), the edge plates (5) are connected between the first plate body (1) and the second plate body (2) to make the plate structure (30) into a cavity with openings on both sides of a third direction (Z).

9. The panel structure (30) according to claim 1, characterized in that The plate structure (30) is a one-piece formed by die casting of a metal plate, or the plate structure (30) is formed by butt welding of a plurality of plate bodies.

10. A battery box characterized by ​ A box (100) and a lid, the box (100) comprising a bottom plate (10) and a surrounding plate (20) connected to the outer periphery of the bottom plate (10), wherein the bottom plate (10) comprises a plate structure (30) according to any one of claims 1-9.

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