Battery pack box body and vehicle

Abstract

The battery pack box comprises a bottom plate, a side plate and a lifting lug structure, the side plate is connected with the bottom plate to form an inner cavity for containing a battery, and the lifting lug structure is located outside the inner cavity and connected with the side plate; the first reinforcing structure is positioned in the inner cavity, is arranged on the bottom plate and is connected with the first surface of the side plate; the second reinforcing structure is arranged on the lifting lug structure and is connected with the second surface of the side plate; wherein the projection of the first reinforcing structure on the first surface is at least partially overlapped with the projection of the second reinforcing structure on the first surface. When the lifting lug structures on the side surfaces are impacted, one part of the impact force is dispersed by the lifting lug structures, and the other part of the impact force can be transmitted to the first reinforcing structures through the second reinforcing structures, so that the structural strength of the battery pack box body can be improved, the deformation of the battery pack box body is reduced, and a battery is prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle parts, and particularly to a battery pack box body and a vehicle. Background Art

[0002] The power battery assembly includes a battery housing and a plurality of batteries arranged in the battery housing. The batteries are used to supply electrical energy to the vehicle, and the battery housing provides protection for the batteries to reduce damage to the batteries caused by bumps and other reasons during vehicle driving.

[0003] In order to improve the strength of the battery housing, on the one hand, a reinforcing beam can be arranged inside the battery housing to improve the structural strength of the battery housing in the extending direction of the reinforcing beam. On the other hand, a reinforcing structure can be arranged on the frame of the battery housing. When the battery pack is collided from the side, the reinforcing structure on the frame can disperse the collision force to reduce the damage to the battery housing and the batteries. Summary of the Invention

[0004] The purpose of the present application is to provide a battery pack box body and a vehicle, which can improve the structural strength of the battery pack box body, reduce the deformation of the battery pack box body when the side of the battery pack box body is collided, and avoid damage to the batteries.

[0005] The first aspect of the present application provides a battery pack box body, including a bottom plate, side plates and a lug structure. The side plates are connected to the bottom plate to form an inner cavity for accommodating batteries. The lug structure is located outside the inner cavity and is connected to the side plates. The battery pack box body further includes: a first reinforcing structure, which is located inside the inner cavity, arranged on the bottom plate and connected to the first surface of the side plates; a second reinforcing structure, which is arranged on the lug structure and connected to the second surface of the side plates; wherein, the projection of the first reinforcing structure on the first surface at least partially coincides with the projection of the second reinforcing structure on the first surface; or, the projection of the first reinforcing structure on the second surface at least partially coincides with the projection of the second reinforcing structure on the second surface.

[0006] As described above, by providing a first reinforcing structure inside the inner cavity and connecting the first reinforcing structure to the first surface of the side plate, when the side plate is impacted, the impact force can be transmitted to the first reinforcing structure, and the first reinforcing structure provides support for the inner cavity, thereby improving the structural strength of the battery pack housing in the extending direction of the first reinforcing structure. By providing a second reinforcing structure on the lug structure and connecting the second reinforcing structure to the side plate, the structural strength between the lug structure and the side plate can be improved. In addition, by making the projection of the first reinforcing structure on the first surface or the second surface of the side plate at least partially coincide with the projection of the second reinforcing structure on the first surface or the second surface, when the lug structure on the side is impacted, after a part of the impact force is dispersed by the lug structure, the other part of the impact force can be transmitted to the first reinforcing structure through the second reinforcing structure, thereby improving the structural strength of the battery pack housing, reducing the deformation of the battery pack housing, and preventing the battery from being damaged.

[0007] As a possible implementation of the first aspect, the first surface is the surface of the side plate facing the inner cavity, and the second surface is the surface of the side plate facing away from the inner cavity.

[0008] As a possible implementation of the first aspect, the second reinforcing structure is provided to extend from the second surface to the upper surface of the lug structure.

[0009] As described above, by making the second reinforcing structure extend from the second surface to the upper surface of the lug structure, a reinforcing rib can be formed between the upper surface of the lug structure and the second surface of the side plate by the second reinforcing structure, thereby improving the structural strength between the lug structure and the side plate.

[0010] As a possible implementation of the first aspect, the second reinforcing structure is provided to extend from the second surface to the intersection line position of the upper surface of the lug structure and the side end surface of the lug structure.

[0011] As described above, by making the second reinforcing structure extend from the second surface to the intersection line position of the upper surface of the lug structure and the side end surface of the lug structure, the second reinforcing structure can extend a longer distance on the upper surface of the lug structure, thereby improving the strength of the lug structure through the second reinforcing structure. When the side end surface of the lug structure is impacted, part of the impact force can be dispersed in time through the second reinforcing structure, thereby improving the structural strength of the lug structure.

[0012] As a possible implementation of the first aspect, the second reinforcing structure includes: a first part provided on the second surface; and a second part provided on the lug structure, and the second part is connected to the first part.

[0013] As described above, the specific structure of the second strengthening structure is provided. The first part provided on the second surface can be connected to the first part provided on the lug structure. Thus, when the lug structure is impacted, part of the impact force can be dissipated through the connected first part and the second part, and further, the structural strength of the lug structure can be improved.

[0014] As a possible implementation manner of the first aspect, the first part is in the shape of an arc-shaped plate and is erected on the side plate.

[0015] As described above, by setting the first part in the shape of an arc-shaped plate, the cross-sectional area of the first part in its extending direction can be increased, thereby increasing the structural strength of the first part and further increasing the structural strength of the lug structure.

[0016] As a possible implementation manner of the first aspect, the first part is arranged perpendicular to the second surface.

[0017] As described above, by arranging the first part perpendicular to the second surface, when casting the battery pack box body, the first part can be demolded up and down, thereby improving the strength between the lug structure and the side plate.

[0018] As a possible implementation manner of the first aspect, the first strengthening structure includes a first strengthening part, and the first strengthening part is connected to the first surface; the projection of the first strengthening part on the first surface at least partially coincides with the projection of the second strengthening structure on the first surface, or the projection of the first strengthening part on the second surface at least partially coincides with the projection of the second strengthening structure on the second surface.

[0019] As described above, by making the projection of the first strengthening part and the second strengthening structure on the first surface or the second surface at least partially coincide, when the lug structure is impacted, the impact force can be transmitted to the first strengthening part through the second strengthening structure, thereby improving the structural strength of the battery pack box body, reducing the deformation of the battery pack box body, and avoiding damage to the battery.

[0020] As a possible implementation manner of the first aspect, the first strengthening structure further includes a first fixing part, and the first fixing part is arranged on the first strengthening part and is used for connecting with other devices.

[0021] As described above, the strength of the position where the first strengthening structure is arranged in the cavity of the battery pack box body is greater than that of other positions. By arranging the first fixing part on the first strengthening part, when the first fixing part is connected to other devices such as a vehicle, the structural strength of the connection position can be improved. In addition, by arranging the first fixing part on the first strengthening part, the installation space of the first fixing part can be reduced, and the influence of the first fixing part on the installation of the battery can be avoided.

[0022] As a possible implementation of the first aspect, the first reinforcing structure further includes a second reinforcing portion, and the second reinforcing portion is disposed on the first fixing portion and connected to the bottom plate.

[0023] As described above, by providing the second reinforcing portion to connect the first fixing portion and the bottom plate, the structural strength of the first fixing portion can be improved, and thus the firmness and stability of the installation of the battery pack housing can be enhanced.

[0024] As a possible implementation of the first aspect, the first reinforcing portion is in the shape of a rectangular plate, and the second reinforcing portion is in the shape of a triangular plate.

[0025] As described above, by providing the first reinforcing portion in the shape of a plate and disposing it on the bottom plate, the first reinforcing portion can be demolded from above and below during the casting of the battery pack housing, thereby improving the strength of the first reinforcing portion. In addition, by providing the second reinforcing portion in the shape of a triangular plate, not only can the structural strength of the second reinforcing portion be improved, thereby enhancing the connection strength between the first fixing portion and the bottom plate and the firmness and stability of the installation of the battery pack housing, but also the bending rigidity of the vehicle floor can be increased.

[0026] As a possible implementation of the first aspect, it includes two first reinforcing structures and two second reinforcing structures, and the projections of the two first reinforcing structures on the first surface or the second surface respectively at least partially overlap with the projections of the two second reinforcing structures.

[0027] As described above, by providing a plurality of first reinforcing structures, the structural strength of the inner cavity can be improved, thereby enhancing the safety of the battery pack. In addition, by making the projections of the first reinforcing structure and the second reinforcing structure on the first surface or the second surface at least partially overlap, when the lug structure is impacted, the impact force can be transmitted to the first reinforcing structure through the second reinforcing structure, thereby increasing the structural strength of the battery pack housing, reducing the deformation of the battery pack housing, and preventing the battery from being damaged.

[0028] As a possible implementation of the first aspect, it further includes a third reinforcing structure, and the third reinforcing structure is disposed on the lug structure.

[0029] As described above, by providing the third reinforcing structure on the lug structure, the structural strength of the lug structure can be improved through the third reinforcing structure, enabling the lug structure to better withstand side impacts.

[0030] As a possible implementation of the first aspect, the third reinforcing structure includes a first reinforcing rib and a second reinforcing rib disposed on the lower surface of the lug structure. There are a plurality of the first reinforcing ribs, and one ends of the plurality of first reinforcing ribs are connected, and the other ends are respectively connected to different positions on the second reinforcing rib to form a triangular structure.

[0031] As described above, by forming a triangular structure with the first reinforcing rib and the second reinforcing rib, the third reinforcing structure can be made more stable, so as to improve the structural strength of the lug structure.

[0032] As a possible implementation manner of the first aspect, it further includes a fourth reinforcing structure, and the fourth reinforcing structure is arranged on the lower surface of the lug structure, wherein the projection of the fourth reinforcing structure on the lower surface of the lug structure coincides with at least a part of the projection of the second reinforcing structure on the lower surface of the lug structure; or, the projection of the fourth reinforcing structure on the upper surface of the lug structure coincides with at least a part of the projection of the second reinforcing structure on the upper surface of the lug structure.

[0033] As described above, by arranging the fourth reinforcing structure on the lug structure, the structural strength of the lug structure can be improved through the fourth reinforcing structure, so that the lug structure can better cope with side collisions. In addition, by making the projection of the fourth reinforcing structure on the lug structure coincide with at least a part of the projection of the second reinforcing structure on the lug structure, the structural strength of the second reinforcing structure can be improved, so that when the lug structure receives a side impact, the deformation amount of the lug structure can be reduced.

[0034] The second aspect of the present application provides a vehicle, including any possible implementation manner of the battery pack box described in the first aspect of the present application.

[0035] As described above, by arranging the first reinforcing structure in the inner cavity and connecting the first reinforcing structure to the first surface of the side plate, when the side plate is impacted, the impact force can be transmitted to the first reinforcing structure, and the first reinforcing structure provides support for the inner cavity, so that the structural strength of the battery pack box in the extending direction of the first reinforcing structure can be improved. By arranging the second reinforcing structure on the lug structure and connecting the side plate through the second reinforcing structure, the structural strength between the lug structure and the side plate can be improved. In addition, by making the projection of the first reinforcing structure on the first surface of the side plate coincide with at least a part of the projection of the second reinforcing structure on the first surface, or by making the projection of the first reinforcing structure on the second surface of the side plate coincide with at least a part of the projection of the second reinforcing structure on the second surface, when the side lug structure is impacted, after a part of the impact force is dispersed by the lug structure, the other part of the impact force can be transmitted to the first reinforcing structure through the second reinforcing structure, so that the structural strength of the battery pack box can be improved, the deformation of the battery pack box can be reduced, and the battery can be prevented from being damaged.

[0036] These and other aspects of the present invention will become more readily apparent in the following description of the (multiple) embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The various features of the present invention and the connections between the various features will be further described below with reference to the accompanying drawings. The accompanying drawings are all exemplary. Some features are not shown in actual proportion, and in some of the accompanying drawings, features that are customary in the field related to the present application and are not necessary for the present application may be omitted, or features that are not necessary for the present application may be shown additionally. The combinations of the various features shown in the accompanying drawings are not used to limit the present application. Additionally, throughout this specification, the content referred to by the same reference numerals is also the same. The specific description of the accompanying drawings is as follows:

[0038] Figure 1 Schematic three-dimensional structure of the battery pack housing in the present application Figure 1 ;

[0039] Figure 2 Schematic three-dimensional structure of the battery pack housing in the present application Figure 2 ;

[0040] Figure 3 Schematic top orthographic projection structure diagram of the battery pack housing in the present application;

[0041] Figure 4 Schematic bottom orthographic projection structure diagram of the battery pack housing in the present application;

[0042] Figure 5 Schematic structure diagram of the vehicle in the present application;

[0043] Figure 6 is Figure 3 Schematic structure diagram of the first reinforcement structure in

[0044] Description of reference numerals

[0045] 1 Vehicle; 10 Battery pack housing; 100 Main body; 110 Bottom plate; 120 Side plate; 121 First surface; 122 Second surface; 130 Lifting lug structure; 131 Second fixing part; 140 Inner cavity; 200 First reinforcement structure; 210 First reinforcement part; 220 First fixing part; 230 Second reinforcement part; 240 Third reinforcement part; 300 Second reinforcement structure; 310 First part; 320 Second part; 400 Third reinforcement structure; 410 First reinforcing rib; 420 Second reinforcing rib; 500 Fourth reinforcement structure. Detailed implementation manners

[0046] The terms "first, second, third, etc." or terms such as module A, module B, module C, etc. in the description and claims are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that, where permitted, the specific order or sequence can be interchanged so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0047] The term "comprising" as used in the description and claims should not be construed as limited to the content listed thereafter; it does not exclude other elements. Therefore, it should be construed as specifying the presence of the recited features, integers, or components, but not excluding the presence or addition of one or more other features, integers, or components and their groups. Thus, the expression "an apparatus comprising devices A and B" should not be limited to an apparatus consisting only of components A and B.

[0048] As used herein, the phrase "an embodiment" or "embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in an embodiment" or "in embodiments" in various places in this specification are not necessarily all referring to the same embodiment, but may refer to the same embodiment. In addition, in one or more embodiments, the various specific features, structures, or characteristics can be combined in any suitable manner, as will be apparent to those of ordinary skill in the art from this disclosure.

[0049] Next, with reference to the accompanying drawings, the specific structures of the various embodiments of the battery pack housing 10 in the present application will be described in detail.

[0050] Figure 1 is a schematic perspective view of the battery pack housing 10 in the present application Figure 1 ; Figure 2 is a schematic perspective view of the battery pack housing 10 in the present application Figure 2 ; Figure 3 is a schematic top orthographic projection view of the battery pack housing 10 in the present application. As Figure 1 , Figure 2 , Figure 3 shown, the battery pack housing 10 in the present application includes a bottom plate 110, side plates 120, and a lug structure 130. The side plates 120 are connected to the bottom plate 110 to form an inner cavity 140 for accommodating the battery. The lug structure 130 is located outside the inner cavity 140 and is connected to the side plates 120. The battery pack housing 10 in the present application further includes a first reinforcing structure 200 and a second reinforcing structure 300. The first reinforcing structure 200 is located inside the inner cavity 140, is disposed on the bottom plate 110, and is connected to the first surface 121 of the side plates 120. The second reinforcing structure 300 is disposed on the lug structure 130 and is connected to the second surface 122 of the side plates 120. Among them, the projection of the first reinforcing structure 200 on the first surface 121 and the projection of the second reinforcing structure 300 on the first surface 121 at least partially overlap; the projection of the first reinforcing structure 200 on the second surface 122 and the projection of the second reinforcing structure 300 on the second surface 122 at least partially overlap.

[0051] Specifically, the first surface 121 is the surface of the side plate 120 facing the inner cavity 140, and the second surface 122 is the surface of the side plate 120 facing away from the inner cavity 140. The side plates 120 can be asFigures 1 - 3 The component shown is a rectangular plate-like component, and the first surface 121 is parallel to the second surface 122; it can also be set as a trapezoidal or other suitable-shaped component, with a certain angle between the first surface 121 and the second surface 122, and there is no limitation on this. The projection of the first strengthening structure 200 and the second strengthening structure 300 on the first surface 121 or the second surface 122 at least partially overlaps. It can be understood that for example Figures 1 - 3 As shown, the side plate 120 is a rectangular plate-like component, the first surface 121 is parallel to the second surface 122, and the connection area between the first strengthening structure 200 and the first surface 121 and the connection area between the second strengthening structure 300 and the second surface 122 at least partially overlap in the vertical direction of the side plate 120 (i.e., the vertical direction of the first surface 121 and the second surface 122). Thus, when the side of the battery pack housing 10 is impacted, the impact force on the second strengthening structure 300 can be directly transmitted to the first strengthening structure 200, thereby enhancing the structural strength of the battery pack housing 10.

[0052] As above, by arranging the first strengthening structure 200 in the inner cavity 140 and connecting the first strengthening structure 200 to the first surface 121 of the side plate 120, when the side of the battery pack housing 10 is impacted, the impact force can be transmitted to the first strengthening structure 200, and the first strengthening structure 200 provides support for the inner cavity 140, thereby enhancing the structural strength of the battery pack housing 10 in the extending direction of the first strengthening structure 200. By arranging the second strengthening structure 300 on the lug structure 130 and connecting the second strengthening structure 300 to the side plate 120, the structural strength between the lug structure 130 and the side plate 120 can be enhanced. Additionally, by making the projection of the first strengthening structure 200 on the first surface 121 or the second surface 122 of the side plate 120 at least partially overlap with the projection of the second strengthening structure 300 on the first surface 121 or the second surface 122 accordingly, when the lug structure 130 on the side is impacted, part of the impact force is dispersed by the lug structure 130, and the other part of the impact force can be transmitted to the first strengthening structure 200 through the second strengthening structure 300, thereby enhancing the structural strength of the battery pack housing 10, reducing the deformation of the battery pack housing 10, and avoiding damage to the battery.

[0053] In some embodiments, such as Figure 1 、 Figure 2 As shown, the second strengthening structure 300 is arranged to extend from the second surface 122 to the upper surface of the lug structure 130. Thus, by making the second strengthening structure 300 extend from the second surface 122 to the upper surface of the lug structure 130, a reinforcing rib can be formed between the upper surface of the lug structure 130 and the second surface 122 of the side plate 120 by the second strengthening structure 300, thereby enhancing the structural strength between the lug structure 130 and the side plate 120.

[0054] In some embodiments, as Figure 1 、 Figure 2 shown, the second reinforcing structure 300 is arranged to extend from the second surface 122 to the intersection position of the upper surface of the lug structure 130 and the side end surface of the lug structure 130. Thus, by making the second reinforcing structure 300 extend from the second surface 122 to the intersection position of the upper surface of the lug structure 130 and the side end surface of the lug structure 130, the distance that the second reinforcing structure 300 extends on the upper surface of the lug structure 130 can be made longer, so that the strength of the lug structure 130 can be improved by the second reinforcing structure 300. When the side end surface of the lug structure 130 is impacted, part of the impact force can be timely dispersed through the second reinforcing structure 300, so that the structural strength of the lug structure 130 can be improved.

[0055] In some embodiments, as Figure 1 、 Figure 2 shown, the second reinforcing structure 300 includes a first part 310 and a second part 320. The first part 310 is arranged on the second surface 122, the second part 320 is arranged on the lug structure 130, and the second part 320 is connected to the first part 310. Thus, the specific structure of the second reinforcing structure 300 is provided. The first part 310 arranged on the second surface 122 can be connected to the first part 310 arranged on the lug structure 130, so that when the lug structure 130 is impacted, part of the impact force can be dispersed through the connected first part 310 and second part 320, and further the structural strength of the lug structure 130 can be improved.

[0056] In some embodiments, as Figure 1 、 Figure 2 shown, the first part 310 is in the shape of an arc-shaped plate and stands on the side plate 120. Thus, by setting the first part 310 in the shape of an arc-shaped plate, the cross-sectional area of the first part 310 in its extending direction can be increased, so that the structural strength of the first part 310 can be increased, and further the structural strength of the lug structure 130 can be increased.

[0057] In some embodiments, as Figure 1 、 Figure 2 shown, the first part 310 is arranged perpendicular to the second surface 122. Thus, by arranging the first part 310 perpendicular to the second surface 122, the first part 310 can be demolded up and down when casting the battery pack box body 10, so that the strength between the lug structure 130 and the side plate 120 can be improved.

[0058] In some embodiments, the first reinforcing structure 200 includes a first reinforcing portion 210, and the first reinforcing portion 210 is connected to the first surface 121. The projection of the first reinforcing portion 210 on the first surface 121 at least partially overlaps with the projection of the second reinforcing structure 300 on the first surface 121, or the projection of the first reinforcing portion 210 on the second surface 122 at least partially overlaps with the projection of the second reinforcing structure 300 on the second surface 122.

[0059] Thus, by making the projection of the first reinforcing portion 210 on the first surface 121 or the second surface 122 at least partially overlap with the projection of the second reinforcing structure 300, when the lug structure 130 is impacted, the impact force can be transmitted to the first reinforcing portion 210 through the second reinforcing structure 300, thereby improving the structural strength of the battery pack housing 10, reducing the deformation of the battery pack housing 10, and avoiding damage to the battery.

[0060] In some embodiments, the first reinforcing structure 200 includes a first reinforcing portion 210, and the projection of the first reinforcing portion 210 on the first surface 121 at least partially overlaps with the projection of the second reinforcing structure 300 on the first surface 121, or the projection of the first reinforcing portion 210 on the second surface 122 at least partially overlaps with the projection of the second reinforcing structure 300 on the second surface 122.

[0061] In some embodiments, as Figure 1 shown, the first reinforcing structure 200 includes a plurality of first reinforcing portions 210. The projection of at least one first reinforcing portion 210 on the first surface 121 at least partially overlaps with the projection of the second reinforcing structure 300 on the first surface 121, or the projection of at least one first reinforcing portion 210 on the second surface 122 at least partially overlaps with the projection of the second reinforcing structure 300 on the second surface 122. Thus, by connecting the plurality of first reinforcing portions 210 to the first surface 121, the strength of the first reinforcing structure 200 can be improved, and the amount of impact force that the first reinforcing structure 200 can withstand transmitted by the second reinforcing structure 300 can also be increased. Thereby, the structural strength of the battery pack housing 10 can be improved, the deformation of the battery pack housing 10 can be reduced, and damage to the battery can be avoided.

[0062] In some embodiments, as Figure 1As shown, the first reinforcement structure 200 includes two first reinforcement portions 210. The projections of the two first reinforcement portions 210 on the first surface 121 respectively coincide with the projection of a second reinforcement structure 300 on the first surface 121, or the projections of the two first reinforcement portions 210 on the second surface 122 respectively coincide with the projection of a second reinforcement structure 300 on the second surface 122. Thus, by making the projections of the two first reinforcement portions 210 respectively coincide with the projection of a second reinforcement structure 300 on the first surface 121 or the second surface 122, when the side of the lug structure 130 is impacted, it is convenient for the impact force to be transmitted to the first reinforcement portion 210 through the second reinforcement structure 300, thereby improving the structural strength of the battery pack housing 10.

[0063] In some embodiments, as Figure 1 shown, the first reinforcement portion 210 is plate-shaped and is vertically arranged on the bottom plate 110. Thus, by vertically arranging the first reinforcement portion 210 on the bottom plate 110, when casting the battery pack housing 10, the first reinforcement portion 210 can be demolded up and down, thereby improving the strength of the first reinforcement portion 210.

[0064] In some embodiments, as Figure 1 shown, the first reinforcement portions 210 are arranged in pairs and parallel to each other, and a cavity is formed between the two first reinforcement portions 210 arranged in pairs and parallel to each other. Thus, by arranging the first reinforcement portions 210 in pairs and parallel to each other, the structural strength of the first reinforcement structure 200 can be improved. By forming a cavity between the two first reinforcement portions 210, the weight of the first reinforcement structure 200 can be reduced, and further the battery pack housing 10 can be weight-reduced.

[0065] In some embodiments, as Figure 1 shown, the first reinforcement structure 200 further includes a first fixing portion 220. The first fixing portion 220 is arranged on the first reinforcement portion 210 and is used for connecting with other devices. Thus, the strength of the position where the first reinforcement structure 200 is arranged in the cavity of the battery pack housing 10 is greater than that of other positions. By arranging the first fixing portion 220 on the first reinforcement portion 210, when the first fixing portion 220 is connected with other devices such as a vehicle 1, the structural strength of the connection position can be improved. In addition, by arranging the first fixing portion 220 on the first reinforcement portion 210, the installation space of the first fixing portion 220 can be reduced, and the installation of the battery can be prevented from being affected by the first fixing portion 220.

[0066] In some embodiments, as Figure 1 、 Figure 2 、 Figure 3As shown, a plurality of first fixing parts 220 are arranged at intervals along the first strengthening part 210. Thus, by arranging a plurality of first fixing parts 220 at intervals along the first strengthening part 210, the battery pack box body 10 can be connected to other devices at multiple positions, thereby improving the firmness and stability of the installation of the battery pack box body 10.

[0067] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown, the first fixing part 220 is arranged between two pairs of parallel first strengthening parts 210 and is connected to the two pairs of parallel first strengthening parts 210. Thus, by connecting the first fixing part 220 to the two first strengthening parts 210, the firmness of the first fixing part 220 can be improved, and further the firmness and stability of the installation of the battery pack box body 10 can be improved.

[0068] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown, the first strengthening structure 200 further includes a second strengthening part 230, and the second strengthening part 230 is arranged on the first fixing part 220 and is connected to the bottom plate 110. Thus, by arranging the second strengthening part 230 to connect the first fixing part 220 and the bottom plate 110, the structural strength of the first fixing part 220 can be improved, and further the firmness and stability of the installation of the battery pack box body 10 can be improved.

[0069] In some embodiments, such as Figure 1 , Figure 2 As shown, the second strengthening part 230 is in the shape of a triangular plate. Thus, by arranging the second strengthening part 230 in the shape of a triangular plate, not only can the structural strength of the second strengthening part 230 be improved, and further the connection strength between the first fixing part 220 and the bottom plate 110 be improved, and the firmness and stability of the installation of the battery pack box body 10 be improved, but also the bending rigidity of the vehicle floor can be improved.

[0070] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown, the second strengthening part 230 is arranged between two pairs of parallel first strengthening parts 210 and is parallel to the first strengthening part 210. Thus, by arranging the second strengthening part 230 between two pairs of parallel first strengthening parts 210, the installation of the battery can be prevented from being affected by the second strengthening part 230, and the position of the second strengthening part 230 can be made more reasonable.

[0071] In some embodiments, such as Figure 1 , Figure 3As shown, the first reinforcement structure 200 further includes a third reinforcement portion 240, and the third reinforcement portion 240 connects the first reinforcement portion 210 and the second reinforcement portion 230. Thus, by providing the third reinforcement portion 240 to connect the first reinforcement portion 210 and the second reinforcement portion 230, the first reinforcement portion 210 and the second reinforcement portion 230 can be formed into one body, thereby improving the structural strength of the first reinforcement structure 200.

[0072] In some embodiments, as Figure 1 、 Figure 3 shown, the third reinforcement portion 240 is plate-shaped and is vertically disposed on the bottom plate 110. Thus, by vertically disposing the plate-shaped third reinforcement portion 240 on the bottom plate 110, the third reinforcement portion 240 can be demolded from above and below when casting the battery pack housing 10, thereby improving the strength of the third reinforcement portion 240.

[0073] In some embodiments, as Figure 1 、 Figure 3 shown, a plurality of third reinforcement portions 240 are provided and are respectively disposed on both sides of the second reinforcement portion 230. Thus, by disposing the third reinforcement portions 240 on both sides of the second reinforcement portion 230, the second reinforcement portion 230 can be connected to the first reinforcement portions 210 on both sides through the third reinforcement portions 240, thereby improving the structural strength of the first reinforcement structure 200.

[0074] In some embodiments, as Figure 3 shown, the third reinforcement portion 240 is inclinedly disposed on the second reinforcement portion 230. Thus, when the lug structure 130 is impacted from the side and the impact force is transmitted from the first reinforcement portion 210 to the second reinforcement portion 230 through the third reinforcement portion 240, part of the impact force can be transmitted along the inclined direction of the third reinforcement portion 240. Thereby, the force received by the third reinforcement portion 240 in the vertical direction can be reduced, avoiding deformation of the third reinforcement portion 240 due to excessive force, and thus improving the structural strength of the first reinforcement structure 200.

[0075] In some embodiments, as Figure 3As shown, among the multiple third reinforcing parts 240, some of the third reinforcing parts 240 are inclined towards one end of the second reinforcing part 230, and some of the third reinforcing parts 240 are inclined towards the other end of the second reinforcing part 230. Thus, by making some of the third reinforcing parts 240 inclined towards one end of the second reinforcing part 230 and some of the third reinforcing parts 240 inclined towards the other end of the second reinforcing part 230, when the impact force is transmitted along one end or the other end of the third reinforcing part 240, some of the third reinforcing parts 240 can always be in a compressed state, and some of the third reinforcing parts 240 can be in a stretched state. Thus, the stability of the connection between the third reinforcing part 240 and the first reinforcing part 210 and the second reinforcing part 230 can be improved, and further the structural strength of the first reinforcing structure 200 can be improved.

[0076] In some embodiments, as Figure 3 shown, the third reinforcing parts 240 inclined towards both ends of the second reinforcing part 230 are arranged alternately at intervals. Thus, by arranging the third reinforcing parts 240 inclined towards both ends of the second reinforcing part 230 alternately at intervals, when the first reinforcing part 210 transmits the impact force, the third reinforcing parts 240 in the compressed state and the third reinforcing parts 240 in the stretched state can be arranged alternately. Thus, the stability of the connection between the third reinforcing part 240 and the first reinforcing part 210 and the second reinforcing part 230 can be improved, and further the structural strength of the first reinforcing structure 200 can be improved.

[0077] In some embodiments, as Figure 3 shown, the third reinforcing parts 240 located on both sides of the second reinforcing part 230 are symmetrically arranged. Thus, when the impact force is transmitted by the two first reinforcing parts 210 arranged in parallel, by making the third reinforcing parts 240 on both sides of the second reinforcing part 230 symmetrically arranged, when the third reinforcing parts 240 transmit the impact force to the second reinforcing part 230, the component force directions of the impact forces transmitted on the third reinforcing parts 240 on both sides in the vertical direction of the second reinforcing part 230 can be opposite, so that the component forces in the vertical direction of the second reinforcing part 230 can be offset. Thus, the structural strength and stability of the first reinforcing structure 200 can be improved.

[0078] In some embodiments, as Figures 1 - 3 shown, there is one first reinforcing structure 200, and the projection of the first reinforcing structure 200 on the first surface 121 coincides at least partially with the projection of at least one second reinforcing structure 300 on the first surface 121, or the projection of the first reinforcing structure 200 on the second surface 122 coincides at least partially with the projection of at least one second reinforcing structure 300 on the second surface 122.

[0079] In some embodiments, a plurality of first reinforcing structures 200 are provided. The projection of at least one first reinforcing structure 200 on the first surface 121 at least partially coincides with the projection of at least one second reinforcing structure 300 on the first surface 121, or the projection of at least one first reinforcing structure 200 on the second surface 122 at least partially coincides with the projection of at least one second reinforcing structure 300 on the second surface 122.

[0080] In some embodiments, there are two first reinforcing structures 200 and two second reinforcing structures 300. The projections of the two first reinforcing structures 200 on the first surface 121 or the second surface 122 at least partially coincide with the projections of the two second reinforcing structures 300 respectively.

[0081] As such, by providing a plurality of first reinforcing structures 200, the structural strength of the inner cavity 140 can be improved, thereby enhancing the safety of the battery pack. In addition, by making the projections of the first reinforcing structures 200 and the second reinforcing structures 300 on the first surface 121 or the second surface 122 at least partially coincide, when the lug structure 130 is impacted, the impact force can be transmitted to the first reinforcing structures 200 through the second reinforcing structures 300, thereby enhancing the structural strength of the battery pack housing 10, reducing the deformation of the battery pack housing 10, and preventing the battery from being damaged.

[0082] Figure 4 This is a schematic diagram of the bottom orthographic projection structure of the battery pack housing 10 in the present application. In some embodiments, as Figure 4 shown, the battery pack housing 10 in the present application further includes a third reinforcing structure 400, and the third reinforcing structure 400 is provided on the lug structure 130. Thus, by providing the third reinforcing structure 400 on the lug structure 130, the structural strength of the lug structure 130 can be improved through the third reinforcing structure 400, enabling the lug structure 130 to better withstand side impacts.

[0083] In some embodiments, as Figure 4 shown, the third reinforcing structure 400 includes a first reinforcing rib 410 and a second reinforcing rib 420 provided on the lower surface of the lug structure 130. A plurality of first reinforcing ribs 410 are provided. One ends of the plurality of first reinforcing ribs 410 are connected, and the other ends are respectively connected to different positions on the second reinforcing rib 420 to form a triangular structure. As such, by forming a triangular structure with the first reinforcing rib 410 and the second reinforcing rib 420, the third reinforcing structure 400 can be made more stable to improve the structural strength of the lug structure 130.

[0084] In some embodiments, as Figure 4As shown, the position where multiple first reinforcing ribs 410 are connected is set at a position of the lug structure 130 close to the side end face; the position where the first reinforcing rib 410 is connected to the second reinforcing rib 420 is set at a position close to the side plate 120. Thus, by setting the position where multiple first reinforcing ribs 410 are connected at a position of the lug structure 130 close to the side end face, when the side cross-section of the lug structure 130 is impacted, the first reinforcing ribs 410 can provide support for the lug structure 130, thereby improving the impact resistance of the side end face of the lug structure 130. By setting the connection position of the first reinforcing rib 410 and the second reinforcing rib 420 at a position close to the side plate 120, the structural strength of the connection position between the lug structure 130 and the side plate 120 can be improved through the third reinforcing rib.

[0085] In some embodiments, as Figure 4 shown, the lug structure 130 includes a second fixing portion 131 for connecting with other devices, and the second fixing portion 131 is located at the position where multiple first reinforcing ribs 410 are connected. Thus, by setting the second fixing portion 131 at the position where multiple first reinforcing ribs 410 are connected, the structure of the second fixing portion 131 can be strengthened by the multiple first reinforcing ribs 410, thereby improving the firmness and stability of the connection when the battery pack box 10 is connected to other devices through the second fixing portion 131.

[0086] In some embodiments, as Figure 4 shown, the battery pack box 10 in the present application further includes a fourth reinforcing structure 500, and the fourth reinforcing structure 500 is arranged on the lower surface of the lug structure 130. Wherein, the projection of the fourth reinforcing structure 500 on the lower surface of the lug structure 130 at least partially coincides with the projection of the second reinforcing structure 300 on the lower surface of the lug structure 130; or, the projection of the fourth reinforcing structure 500 on the upper surface of the lug structure 130 at least partially coincides with the projection of the second reinforcing structure 300 on the upper surface of the lug structure 130. Thus, by arranging the fourth reinforcing structure 500 on the lug structure 130, the structural strength of the lug structure 130 can be improved through the fourth reinforcing structure 500, so that the lug structure 130 can better cope with side collisions. In addition, by making the projection of the fourth reinforcing structure 500 on the lug structure 130 at least partially coincide with the projection of the second reinforcing structure 300 on the lug structure 130, the structural strength of the second reinforcing structure 300 can be improved, so that when the lug structure 130 receives a side impact, the deformation amount of the lug structure 130 can be reduced.

[0087] In some embodiments, the battery pack box 10 can be integrally formed by casting or other means, or can be made by fixedly connecting structures such as the bottom plate 110, the side plate 120, and the lug structure 130 by welding, bolt fixing, etc., and this is not limited.

[0088] Next, with reference to the accompanying drawings, the specific structure of the vehicle 1 in the embodiments of the present application will be described in detail.

[0089] Figure 5 It is a schematic structural diagram of the vehicle 1 in the present application. As Figure 5 shown, the vehicle 1 in the present application includes a battery pack box body 10, and the battery pack box body 10 is arranged at the bottom position of the vehicle 1 for containing batteries to supply electrical energy to the vehicle 1. The battery pack box body 10 can be any possible embodiment of the battery pack box body 10 in the above-mentioned present application.

[0090] The above content, in combination with Figures 1 - 5 , has given an example description of the possible embodiments of the battery pack box body 10 of the vehicle 1 in the present application. Next, with reference to the accompanying drawings, the specific structure of an embodiment of the battery pack box body 10 in the present application will be described in detail.

[0091] As Figures 1 - 4 shown, the battery pack box body 10 in the present application includes a main body 100, a first strengthening structure 200, a second strengthening structure 300, a third strengthening structure 400 and a fourth strengthening structure 500. Among them, the first strengthening structure 200, the second strengthening structure 300, the third strengthening structure 400 and the fourth strengthening structure 500 are arranged on the main body 100 to improve the structural strength of the main body 100.

[0092] As Figures 1 - 3 shown, the main body 100 includes a bottom plate 110, side plates 120 and a lug structure 130. The bottom plate 110, the side plates 120 and the lug structure 130 are plate-like structures. The bottom plate 110 and the side plates 120 are rectangular. There are 4 side plates 120, which are respectively arranged along the four peripheral edges of the bottom plate 110. Together with the bottom plate 110, they enclose an inner cavity 140 for containing batteries above the bottom plate 110. The side plate 120 has a first surface 121 and a second surface 122. The first surface 121 is the surface of the side plate 120 facing the inner cavity 140, and the second surface 122 is the surface of the side plate 120 facing away from the inner cavity 140. The first surface 121 and the second surface 122 are parallel. The lug structure 130 is arranged outside the inner cavity 140 and is connected to the second surface 122 of the side plate 120. The lug structure 130 has an upper surface facing the upper vehicle chassis and a lower surface facing the lower ground. The upper surface and the lower surface are parallel. The lug structure 130 is trapezoidal or triangular, and there are multiple of them, which are arranged around the four sides of the side plate 120. A second fixing part 131 is arranged on the lug structure 130, and the second fixing part 131 is arranged at a position close to the end face on the side away from the side plate 120 on the lug structure 130. The second fixing part 131 is a circular through-hole structure, and connecting components such as bolts can pass through the second fixing part 131 to fix the battery pack box body 10 to the bottom of the vehicle 1.

[0093] As shown Figures 1 - 3 in FIG. 1, the first reinforcing structure 200 is located in the inner cavity 140 of the main body 100, disposed on the bottom plate 110, and extends between the side plates 120 on both sides (i.e., the side plates 120 corresponding to the left and right sides of the vehicle 1). Both ends of the first reinforcing structure 200 are perpendicularly connected to the first surfaces 121 of the side plates 120 on both sides, and are used to reinforce the inner cavity 140 to improve the structural strength of the inner cavity 140 and prevent the battery in the inner cavity 140 from being damaged by impact.

[0094] As shown Figures 1 - 3 in FIG. 2, the first reinforcing structure 200 includes a first reinforcing portion 210. The first reinforcing portion 210 is vertically disposed on the bottom plate 110 in a plate shape and extends from one side plate 120 to the other side plate 120 opposite thereto. At both ends of the first reinforcing structure 200, the first reinforcing portion 210 is perpendicularly connected to the first surfaces 121 of the side plates 120 on both sides. There are two first reinforcing portions 210, and the two first reinforcing portions 210 extend in parallel along the width direction of the battery pack box 10, and a cavity is formed between the two first reinforcing portions 210. Thus, the structural strength of the first reinforcing structure 200 can be improved by the two parallel first reinforcing portions 210, and the weight of the first reinforcing structure 200 can be reduced by forming a cavity between the two first reinforcing portions 210. In addition, by vertically disposing the first reinforcing portion 210 on the bottom plate 110 in a plate shape, when casting the battery pack box 10, the first reinforcing portion 210 can be demolded up and down, so that the casting of the battery pack box 10 can be facilitated.

[0095] As shown Figures 1 - 3 in FIG. 3, the first reinforcing structure 200 further includes a first fixing portion 220. The first fixing portion 220 is vertically disposed on the bottom plate 110 in a cylindrical shape. A through hole is provided at the axial center position of the first fixing portion 220 to facilitate components such as bolts to pass through the first fixing portion 220 to fix the battery pack box 10 to the bottom of the vehicle 1. The first fixing portion 220 is located between the two first reinforcing portions 210, and four are provided at intervals along the extending direction of the first reinforcing portion 210. The outer peripheral surface of the cylindrical first fixing portion 220 is connected to the two first reinforcing portions 210, and the two first reinforcing portions 210 reinforce the first fixing portion 220 on both sides of the first fixing portion 220, so that the firmness of the connection between the first fixing portion 220 and the bottom plate 110 can be improved.

[0096] As shown Figures 1 - 3As shown, the first reinforcement structure 200 further includes a second reinforcement portion 230. The second reinforcement portion 230 is plate-shaped and is disposed on the first fixing portion 220, located at the middle position between the two first reinforcement portions 210, and is parallel to the first reinforcement portions 210. The second reinforcement portion 230 is also connected to the bottom plate 110 to improve the structural strength of the connection between the first fixing portion 220 and the bottom plate 110. The second reinforcement portion 230 is in the shape of a triangular plate. Specifically, the dimension of the second reinforcement portion 230 in the extending direction of the first reinforcement portion 210 gradually increases as it approaches the bottom plate 110. Thus, by setting the second reinforcement portion 230 as a triangular plate, not only can the structural strength of the second reinforcement portion 230 be improved, thereby improving the connection strength between the first fixing portion 220 and the bottom plate 110, enhancing the firmness and stability of the installation of the battery pack housing 10, but also the bending rigidity of the vehicle floor can be improved.

[0097] As Figure 1 , Figure 2 shown, one second reinforcement portion 230 is disposed on each side of each first fixing portion 220. The inclination angles of the upper end surfaces of the two second reinforcement portions 230 on the two sides are different from those of the upper end surfaces of the six second reinforcement portions 230 at the middle position. The inclination angles of the upper end surfaces of the two second reinforcement portions 230 on the two sides are small and extend obliquely to the first surface 121 of the two side plates 120, so that the second reinforcement portion 230 is connected to the first surface 121. The inclination angles of the upper end surfaces of the six second reinforcement portions 230 at the middle position are large. After reaching the same height as the first reinforcement portion 210, the two second reinforcement portions 230 between two adjacent first fixing portions 220 extend and are connected according to the height of the first reinforcement portion 210.

[0098] As Figure 1 , Figure 3 shown, the first reinforcement structure 200 further includes a third reinforcement portion 240. The third reinforcement portion 240 is located between the first reinforcement portion 210 and the second reinforcement portion 230 and connects the first reinforcement portion 210 and the second reinforcement portion 230. Thus, the first reinforcement portion 210 and the second reinforcement portion 230 can be formed into one body, thereby improving the structural strength of the first reinforcement structure 200. The third reinforcement portion 240 is plate-shaped and is vertically disposed on the bottom plate 110. Thus, when casting the battery pack housing 10, the third reinforcement portion 240 can be demolded up and down, thereby improving the strength of the third reinforcement portion 240. A plurality of third reinforcement portions 240 are provided and are respectively disposed on both sides of the second reinforcement portion 230 and are arranged along the extending direction of the second reinforcement portion 230. Thus, by disposing the third reinforcement portion 240 on both sides of the second reinforcement portion 230, the second reinforcement portion 230 can be connected to the first reinforcement portions 210 on both sides through the third reinforcement portion 240, thereby improving the structural strength of the first reinforcement structure 200.

[0099] Figure 6 is Figure 3 a schematic structural view of the first strengthening structure 200 in []. As Figure 3 , Figure 6 shown, the third strengthening portion 240 is obliquely arranged between the first strengthening portion 210 and the second strengthening portion 230. When the impact force is transmitted along the extending direction of the first strengthening structure 200, the impact force can be decomposed on the third strengthening portion 240 into a force transmitted along the extending direction of the third strengthening portion 240 and a force perpendicular to the extending direction of the third strengthening portion 240. Since the force perpendicular to the extending direction of the third strengthening portion 240 can be used to drive the third strengthening portion 240 to deform, if the third strengthening portion 240 is perpendicularly arranged with the first strengthening portion 210 and the second strengthening portion 230, the force perpendicular to the extending direction of the third strengthening portion 240 will be equal to the impact force. Therefore, by obliquely arranging the third strengthening portion 240 with the first strengthening portion 210 and the second strengthening portion 230, the force perpendicular to the extending direction of the third strengthening portion 240 on the third strengthening portion 240 can be reduced, thereby reducing the probability of deformation of the third strengthening portion 240 and improving the structural strength of the third strengthening portion 240.

[0100] As Figure 3 , Figure 6 shown, among the multiple third strengthening portions 240, one end of a part of the third strengthening portions 240 is inclined towards the second strengthening portion 230, and the other end of another part of the third strengthening portions 240 is inclined towards the second strengthening portion 230. The third strengthening portions 240 with the two inclination modes are alternately arranged at intervals along the extending direction of the second strengthening portion 230. When the impact force is transmitted along the first strengthening portion 210, if the transmission direction of the impact force is the same as the inclination direction of the third strengthening portion 240, the force decomposed along the extending direction of the third strengthening portion 240 will be towards the direction away from the second strengthening portion 230, thereby making the third strengthening portion 240 in a tensile state. If the transmission direction of the impact force is opposite to the inclination direction of the third strengthening portion 240, the force decomposed along the extending direction of the third strengthening portion 240 will be towards the direction approaching the second strengthening portion 230, thereby making the third strengthening portion 240 in a compressive state. Thus, by inclining one end of a part of the third strengthening portions 240 towards the second strengthening portion 230 and the other end of another part of the third strengthening portions 240 towards the second strengthening portion 230, when the impact force is transmitted along one end or the other end of the third strengthening portion 240, part of the third strengthening portions 240 can always be in a compressive state and the other part of the third strengthening portions 240 can be in a tensile state. Thereby, the stability of the connection between the third strengthening portion 240 and the first strengthening portion 210 and the second strengthening portion 230 can be improved, and further the structural strength of the first strengthening structure 200 can be improved.

[0101] As Figure 3 , Figure 6As shown, the third reinforcing parts 240 on both sides of the second reinforcing part 230 are symmetrically arranged. Thus, the component forces of the forces transmitted along the third reinforcing part 240 on the third reinforcing parts 240 symmetrically arranged on both sides of the second reinforcing part 230 in the direction perpendicular to the second reinforcing part 230 are opposite in direction, so that the component forces in the perpendicular direction of the second reinforcing part 230 can be offset. Thus, the structural strength and stability of the first reinforcing structure 200 can be improved.

[0102] As Figure 1 , Figure 2 shown, the second reinforcing structure 300 is arranged on the lug structure 130 and is connected to the second surface 122 of the side plate 120. There are two second reinforcing structures 300, which are arranged on the upper surface of the lug structure 130 and are respectively located at the corresponding positions at both ends of the first reinforcing part 210. The projection of the first reinforcing structure 200 on the first surface 121 coincides with the projection of the second reinforcing structure 300 on the first surface 121, that is, the connection area of the second reinforcing structure 300 and the second surface 122 coincides with the connection area of the first reinforcing part 210 and the first surface 121 in the vertical direction of the side plate 120 (i.e., the vertical direction of the first surface 121 and the second surface 122). Thus, the impact force can be transmitted to the first reinforcing structure 200 through the second reinforcing structure 300, so that the structural strength of the battery pack box body 10 can be improved, the deformation of the battery pack box body 10 can be reduced, and the battery can be prevented from being damaged.

[0103] As Figure 1 , Figure 2 shown, the second reinforcing structure 300 includes a first part 310 and a second part 320. Among them, the first part 310 is in the shape of an arc-shaped plate and is vertically arranged on the second surface 122. The second part 320 is connected to the first part 310. The second part 320 is in the shape of a strip-shaped protrusion and is arranged on the upper surface of the lug structure 130. Along the direction perpendicular to the side plate 120, it extends from the connection position of the side plate 120 and the lug structure 130 to the intersection line position of the upper surface of the lug structure 130 and the side end face (outer edge) of the lug structure 130. Thus, when the side end face of the lug structure 130 is impacted, the impact force can be timely transmitted to the first part 310 through the second part 320 to disperse the impact force, and further the structural strength of the lug structure 130 can be improved.

[0104] As Figure 1 , Figure 2 shown, the height of the first part 310 protruding from the second surface 122 is greater than the height of the second part 320 protruding from the upper surface of the lug structure 130, so that the first part 310 can cover the circular arc transition surface at the connection position of the lug structure 130 and the side plate 120 when viewed from the vertical direction. Thus, the structural strength of the connection position of the lug structure 130 and the side plate 120 can be improved through the first part 310.

[0105] AsFigure 1 , Figure 2 As shown, two first parts 310 and second parts 320 of the second strengthening structure 300 are provided. The connection parts of the two first parts 310 and the second surface 122 respectively coincide with the connection parts of the two first strengthening parts 210 and the first surface 121 in the vertical direction of the side plate 120 (i.e., the vertical direction of the first surface 121 and the second surface 122). Thus, the second strengthening structure 300 can transmit the impact force to the two first strengthening parts 210 of the first strengthening structure 200 through the two first parts 310 and the second parts 320 respectively.

[0106] As Figure 4 shown, the third strengthening structure 400 is arranged on the lug structure 130 to improve the structural strength of the lug structure 130. The third strengthening structure 400 is arranged on the lower surface of the lug structure 130 and includes a first reinforcing rib 410 and a second reinforcing rib 420. Among them, a plurality of first reinforcing ribs 410 are provided. Specifically, it can be, for example Figure 4 the 3 or 4 described in. One end of the plurality of first reinforcing ribs 410 is connected at the position where the second fixing part 131 is located, and the other ends are respectively connected to different positions on the second reinforcing rib 420 to form a triangular structure to improve the structural strength of the lug structure 130.

[0107] As Figure 4 shown, according to the size of the lug structure 130 and the number of second fixing parts 131 on the lug structure 130, a plurality of third strengthening structures 400 can be provided on one lug structure 130, or 1 can be provided. When a plurality of second fixing parts 131 are arranged along the extending direction of the lug structure 130 at a position close to the side end face on one lug structure 130, correspondingly, a corresponding number of third strengthening structures 400 are arranged on the lower surface of the lug structure 130.

[0108] As Figure 4 shown, two fourth strengthening structures 500 are provided and arranged on the lower surface of the lug structure 130. Among them, the projections of the two fourth strengthening structures 500 on the upper surface and the lower surface of the lug structure 130 respectively coincide with the projections of the two second strengthening structures 300 on the upper surface and the lower surface of the lug structure 130. Thus, by arranging the fourth strengthening structure 500 on the lug structure 130, the structural strength of the lug structure 130 can be improved through the fourth strengthening structure 500, so that the lug structure 130 can better cope with side collisions. In addition, by making at least part of the projection of the fourth strengthening structure 500 on the lug structure 130 coincide with the projection of the second strengthening structure 300 on the lug structure 130, the structural strength of the second strengthening structure 300 can be improved, so that when the lug structure 130 receives a side impact, the deformation amount of the lug structure 130 can be reduced.

[0109] As described above, by providing the first reinforcement structure 200 inside the inner cavity 140 and connecting the first reinforcement structure 200 to the first surface 121 of the side plate 120, when the side plate 120 is impacted, the impact force can be transmitted to the first reinforcement structure 200, and the first reinforcement structure 200 provides support for the inner cavity 140, thereby improving the structural strength of the battery pack housing 10 in the extending direction of the first reinforcement structure 200. By providing the second reinforcement structure 300 on the lug structure 130 and connecting the second reinforcement structure 300 to the side plate 120, the structural strength between the lug structure 130 and the side plate 120 can be improved. In addition, by making the projection of the first reinforcement structure 200 on the first surface 121 or the second surface 122 of the side plate 120 and the projection of the second reinforcement structure 300 on the first surface 121 or the second surface 122 at least partially coincide, when the lug structure 130 on the side is impacted, after a part of the impact force is dispersed by the lug structure 130, another part of the impact force can be transmitted to the first reinforcement structure 200 through the second reinforcement structure 300, thereby improving the structural strength of the battery pack housing 10, reducing the deformation of the battery pack housing 10, and avoiding damage to the battery.

[0110] Note that the above is only a preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present application has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, all of which belong to the protection scope of the present invention.

Claims

1. A battery pack housing, comprising a bottom plate, side plates, and a lug structure. The side plates are connected to the bottom plate to form an inner cavity for accommodating batteries, and the lug structure is located outside the inner cavity and connected to the side plates; Characterized in that, It further comprises: A first strengthening structure, which is located inside the inner cavity, arranged on the bottom plate, and connected to the first surface of the side plates; A second strengthening structure, which is arranged on the lug structure and connected to the second surface of the side plates; Wherein, the projection of the first strengthening structure on the first surface at least partially coincides with the projection of the second strengthening structure on the first surface; or, the projection of the first strengthening structure on the second surface at least partially coincides with the projection of the second strengthening structure on the second surface.

2. The battery pack housing according to claim 1, Characterized in that, The second strengthening structure is arranged to extend from the second surface to the upper surface of the lug structure.

3. The battery pack housing according to claim 2, Characterized in that, The second strengthening structure is arranged to extend from the second surface to the intersection line position of the upper surface of the lug structure and the side end face of the lug structure.

4. The battery pack housing according to claim 1, Characterized in that, The first surface is the surface of the side plate facing the inner cavity, and the second surface is the surface of the side plate facing away from the inner cavity.

5. The battery pack housing according to claim 1, Characterized in that, The second strengthening structure comprises: A first part, which is arranged on the second surface; A second part, which is arranged on the lug structure and connected to the first part.

6. The battery pack housing according to claim 5, Characterized in that, The first part is in the shape of an arc-shaped plate and stands on the side plate.

7. The battery pack housing according to claim 5, Characterized in that, The first part is arranged perpendicular to the second surface.

8. The battery pack housing according to any one of claims 1-7, Characterized in that, The first strengthening structure comprises a first strengthening part, which is connected to the first surface; the projection of the first strengthening part on the first surface at least partially coincides with the projection of the second strengthening structure on the first surface, or the projection of the first strengthening part on the second surface at least partially coincides with the projection of the second strengthening structure on the second surface.

9. The battery pack housing according to claim 8, Characterized in that, The first strengthening structure further comprises a first fixing part, which is arranged on the first strengthening part and used for connecting to other devices.

10. The battery pack housing according to claim 9, Characterized in that, The first strengthening structure further comprises a second strengthening part, which is arranged on the first fixing part and connected to the bottom plate.

11. The battery pack housing according to claim 10, Characterized in that, The first strengthening part is in the shape of a rectangular plate, and the second strengthening part is in the shape of a triangular plate.

12. The battery pack housing according to claim 1, Characterized in that, It further includes a third strengthening structure which is arranged on the lug structure.

13. The battery pack box according to claim 12, wherein, the third strengthening structure includes a first reinforcing rib and a second reinforcing rib arranged on the lower surface of the lug structure, a plurality of the first reinforcing ribs are provided, one ends of the plurality of the first reinforcing ribs are connected, and the other ends are respectively connected to different positions on the second reinforcing rib to form a triangular structure.

14. The battery pack box according to claim 1, wherein, it includes two first strengthening structures and two second strengthening structures, and the projections of the two first strengthening structures and the two second strengthening structures on the first surface or the second surface at least partially overlap.

15. A vehicle, wherein, it includes the battery pack box according to any one of claims 1-14.

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