Battery box body, battery pack and vehicle

Abstract

The utility model relates to a battery box body, a battery pack and a vehicle. The battery box body comprises a battery box body and a bottom protection plate arranged at the bottom of the battery box body; the bottom of the battery box body is provided with a first area and a second area surrounding the periphery of the first area; the first area is provided with a connecting structure, the connecting structure is at least one of a magnet, a hook-and-loop fastener and a snap fastener, and the battery box body is connected with the bottom protection plate through the connecting structure in the first area and connected with the bottom protection plate through a bolt in the second area. Through the structural design, a bolt connection structure between the first area at the bottom of the battery box body and the bottom protection plate is reduced or cancelled, and the requirement on the wall thickness of part of the structure of the battery box body when the bolt connection structure is arranged is reduced, so that the size is reduced, the weight is reduced, and the material cost is reduced; the energy density of the battery pack can be increased, and the lightweight design can be realized.

Description

Technical Field

[0001] This disclosure relates to the field of automotive power battery technology, and in particular to a battery housing, battery pack, and vehicle. Background Technology

[0002] The bottom or top protective plate of the battery pack plays an important role in protecting it from impacts by debris and maintaining its waterproof, dustproof, and heat protection functions.

[0003] Traditional bottom protection plates are typically fixed to the battery pack's frame and longitudinal beams using bolts. However, this method requires the longitudinal beams of the battery pack to have sufficient wall thickness to accommodate the bolt holes, increasing the size and weight of the beams, affecting the battery pack's energy density, hindering lightweight design, and increasing material costs. Furthermore, using bolts to fix the bottom protection plate can compromise the structural reliability of the bottom protection plate or battery pack due to the large number of bolts required, and also increases maintenance costs.

[0004] Another existing underbody protection plate fixing solution only uses bolts to fix the frame to the underbody protection plate, and there is no connecting structure between the longitudinal beam and the underbody protection plate. However, this fixing method has the problem of abnormal noise under vehicle conditions caused by the lack of connection in the middle of the underbody protection plate or by gravity sagging. It is necessary to further thicken the underbody protection plate to enhance its rigidity to alleviate the abnormal noise problem, so it still leads to the problem of increased weight and higher material cost. Utility Model Content

[0005] To overcome the problems existing in the related technologies, this disclosure provides a battery housing, a battery pack, and a vehicle.

[0006] According to a first aspect of the present disclosure, a battery housing is provided, comprising a battery housing body and a bottom protective plate disposed at the bottom of the battery housing body; the bottom of the battery housing body has a first region and a second region surrounding the periphery of the first region; the first region is provided with a connecting structure, the connecting structure being at least one of a magnet, a hook and loop fastener, the battery housing body being connected to the bottom protective plate in the first region via the connecting structure, and being connected to the bottom protective plate in the second region via bolts.

[0007] In some exemplary embodiments of this disclosure, the battery box body includes a frame and a beam structure; the frame encloses the receiving space of the battery box body, and the bottom surface of the frame is the second region; the beam structure is disposed within the receiving space, and the bottom surface of the beam structure is the first region.

[0008] In some exemplary embodiments of this disclosure, wherein: the beam structure includes a first beam extending along a first direction, the first beam dividing the accommodating space into a battery compartment and an electrical compartment, the battery compartment for accommodating individual battery cells, and the electrical compartment for accommodating electrical components; wherein the beam structure further includes a second beam extending along a second direction perpendicular to the first direction, and the connecting structure is disposed on the bottom surface of the second beam; and / or, the beam structure includes a first beam extending along the first direction, the first beam dividing the accommodating space into a battery compartment and an electrical compartment, the battery compartment for accommodating individual battery cells, and the electrical compartment for accommodating electrical components; wherein the connecting structure is disposed on the bottom surface of the first beam; and / or, the beam structure is provided with at least two of the connecting structures, the at least two of the connecting structures being spaced apart along the extension direction of the beam structure; and / or, the beam structure is connected to the bottom protective plate via bolts. In some exemplary embodiments of this disclosure, the battery housing includes at least two beam structures arranged in parallel, wherein for the at least two beam structures arranged in parallel: all beam structures are provided with the connecting structure; or, at least one beam structure is provided with the connecting structure, and at least another beam structure is not provided with the connecting structure.

[0009] In some exemplary embodiments of this disclosure, the connection structure includes a magnet, the bottom surface of the beam structure is provided with a buffer layer, the bottom surface of the buffer layer is provided with an assembly groove, and the magnet is disposed in the assembly groove.

[0010] In some exemplary embodiments of this disclosure, the assembly groove is a through groove penetrating the buffer layer, and the top surface of the magnet is connected to the bottom surface of the beam structure; and / or, the buffer layer is made of rubber or silicone.

[0011] In some exemplary embodiments of this disclosure, the battery box body includes a frame, a beam structure, and a base plate; the frame is disposed on the top surface of the base plate and together encloses the receiving space of the battery box body; the beam structure is disposed on the top surface of the base plate and is located within the receiving space; wherein, the bottom protective plate is disposed on the bottom surface of the base plate, the area of ​​the bottom surface of the base plate corresponding to the beam structure is the first area, and the area corresponding to the frame is the second area.

[0012] In some exemplary embodiments of this disclosure, the bottom protective plate is made of stainless steel; the top surface of the bottom protective plate is rough milled to make the surface roughness Ra of the top surface greater than or equal to 12.5 μm.

[0013] According to a second aspect of the present disclosure, a battery pack is provided, wherein the battery pack includes the battery housing proposed in the present disclosure and described in the above embodiments.

[0014] According to a third aspect of the present disclosure, a vehicle is provided, characterized in that the vehicle includes a battery pack proposed in the present disclosure and described in the above embodiments.

[0015] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The battery box proposed in this disclosure includes a battery box body and a bottom protective plate disposed at the bottom of the battery box body; the bottom of the battery box body has a first region and a second region surrounding the periphery of the first region; the first region is provided with a connecting structure, which is at least one of a magnet, a hook and loop fastener, and a snap fastener; the battery box body is connected to the bottom protective plate in the first region via the connecting structure, and is connected to the bottom protective plate in the second region via bolts. Through the above structural design, this disclosure reduces or eliminates the bolt connection structure between the first region at the bottom of the battery box body and the bottom protective plate, reducing the wall thickness requirement of the battery box body part structure when arranging the bolt connection structure, thereby achieving size reduction, weight reduction and material cost reduction, which is beneficial to increasing the energy density of the battery pack and to achieving lightweight design. Furthermore, due to the reduction of the bolt connection structure, this disclosure can improve the operational efficiency when disassembling the bottom protective plate and reduce maintenance costs. In addition to being fixed to the second area by bolts, the bottom guard plate is also fixed to the first area at the bottom of the battery box body by magnets, hooks and snaps. Therefore, the bottom guard plate does not need to be designed with increased thickness, which can avoid the problem of abnormal noise under vehicle operating conditions caused by its own structure, thereby further reducing the weight of the bottom guard plate and reducing material costs.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0018] Figure 1 This is a schematic diagram of the structure of a battery housing according to some exemplary embodiments of the present disclosure;

[0019] Figure 2 yes Figure 1 A schematic diagram of the battery housing from another perspective;

[0020] Figure 3 yes Figure 2 The diagram shown is an exploded three-dimensional view of the battery housing.

[0021] Figure 4 yes Figure 3 An enlarged schematic diagram of the beam structure is shown;

[0022] Figure 5 yes Figure 4 A schematic diagram of the cross-section of the beam structure is shown;

[0023] Figures 6 to 9 These are exploded perspective views of the battery housing according to several other exemplary embodiments of the present disclosure;

[0024] Figure 10 This is an enlarged schematic diagram of the beam structure of the battery box according to another exemplary embodiment of the present disclosure;

[0025] Figure 11 This is an exploded perspective view of a battery housing according to another exemplary embodiment of the present disclosure;

[0026] Figure 12 and Figure 13 These are exploded perspective views of the battery housing from two different viewpoints, illustrating another exemplary embodiment of this disclosure.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Bottom protection plate;

[0029] 101. Top surface;

[0030] 102. Bottom surface;

[0031] 110. Second mounting hole;

[0032] 111. Bolt;

[0033] 120. Fourth mounting hole;

[0034] 130. Second hook and loop fastener;

[0035] 200. Border;

[0036] 210. First mounting hole;

[0037] 300. Beam structure;

[0038] 301. First beam;

[0039] 302. Second beam;

[0040] 310. Magnet;

[0041] 320. Third mounting hole;

[0042] 330. Buffer layer;

[0043] 331. Assembly slot;

[0044] 340. Assembly slot;

[0045] 350. First hook and loop fastener;

[0046] 400. Battery box body;

[0047] 401. First Area;

[0048] 402. Second Region;

[0049] 410. Base plate. Detailed Implementation

[0050] Some embodiments of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0051] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0052] See Figure 1 The illustration represents a schematic diagram of the battery housing proposed in this disclosure in an exemplary embodiment. In this exemplary embodiment, the battery housing proposed in this disclosure is described using an application to an automotive power battery pack as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below to apply the relevant designs of this disclosure to other types of battery devices, and these changes remain within the scope of the principles of the battery housing proposed in this disclosure.

[0053] like Figure 1 As shown, in one embodiment of this disclosure, the battery box body 400 and the bottom protective plate 100 disposed at the bottom of the battery box body 400 are described in this disclosure. (See also...) Figures 2 to 5 , Figure 2 The diagram shows a representative structural schematic of the battery housing from another perspective; Figure 3 The diagram shows a representative three-dimensional exploded view of the battery box. Figure 4 The diagram shows a representative enlarged schematic of beam structure 300; Figure 5The diagram shows a representative cross-sectional view of beam structure 300. The structure, connection methods, and functional relationships of the main components of the battery housing proposed in this disclosure will be described in detail below with reference to the aforementioned figures.

[0054] like Figures 1 to 5 As shown, in one embodiment of this disclosure, the bottom of the battery box body 400 has a first region 401 and a second region 402 surrounding the periphery of the first region 401. In other words, the first region 401 can be the central region of the bottom of the battery box body 400, and the second region 402 can be the edge region of the bottom of the battery box body 400. The first region 401 is provided with a connecting structure, which can be a magnet 310. The battery box body 400 is connected to the bottom cover plate 100 in the first region 401 via the connecting structure, and is connected to the bottom cover plate 100 in the second region 402 via bolts. Through the above structural design, this disclosure reduces or eliminates the bolt connection structure between the first region 401 of the bottom of the battery box body 400 and the bottom cover plate 100, reducing the wall thickness requirements of the battery box body 400 when arranging the bolt connection structure, thereby achieving size reduction, weight reduction, and material cost reduction, which is beneficial for increasing the energy density of the battery pack and for achieving lightweight design. Furthermore, due to the reduction in bolted connections, this disclosure improves operational efficiency and reduces maintenance costs when disassembling the underbody protection plate 100. In addition, besides being fixedly connected to the second region 402 via bolts 111, the underbody protection plate 100 and the first region 401 at the bottom of the battery box body 400 are still fixed together via magnets 300, hooks and snaps, etc. Therefore, the underbody protection plate 100 does not need to be designed with increased thickness, thus avoiding abnormal noise problems caused by its own structure under vehicle operating conditions, thereby further reducing the weight and material costs of the underbody protection plate 100.

[0055] It should be noted that this embodiment uses a magnet 310 as an example of a connecting structure disposed in the first region 401. In other embodiments of this disclosure, the connecting structure disposed in the first region 401 may also be a hook and loop fastener (i.e., Velcro) or a snap fastener, or a combination of at least two of the magnet 310, hook and loop fastener, and snap fastener. In other words, in various possible embodiments that conform to the design concept of this disclosure, the connecting structure disposed in the first region 401 may be at least one of the magnet 310, hook and loop fastener, or a combination of at least two of them.

[0056] like Figure 3 As shown, in one embodiment of this disclosure, the battery box body 400 may include a frame 200 and a beam structure 300. That is, compared to Figure 11In the illustrated embodiment, the battery box body 400 does not have a bottom plate. In other words, the bottom protective plate 100 can be used directly as the "bottom plate" of the entire package, thus providing both bottom protection and support for the battery cells and electrical components. The frame 200 encloses the receiving space of the battery box, and the bottom surface of the frame 200 is the second region 402. The beam structure 300 is disposed within the receiving space, and the bottom surface of the beam structure 300 is the first region 401. That is, the connecting structure is disposed on the bottom surface of the beam structure 300. Based on this, when the battery box body 400 includes multiple beam structures 300, some beam structures 300 may have connecting structures on their bottom surfaces while the bottom surfaces of the remaining beam structures 300 may not have beam structures, or all beam structures 300 may have connecting structures on their top surfaces. In addition, the so-called "multiple beam structures 300 of the battery box body 400" can be understood in the following specific embodiments as multiple first beams 301, multiple second beams 302, or at least one first beam 301 and at least one second beam 302.

[0057] like Figures 1 to 3 As shown, in one embodiment of this disclosure, the bottom cover plate 100 has a top surface 101 and a bottom surface 102. A frame 200 connects to the edge of the bottom cover plate 100 and extends upwards. The frame 200 encloses (i.e., the frame 200 and the bottom cover plate 100 together enclose) a receiving space for the battery box. A beam structure 300 is disposed on the top surface 101 of the bottom cover plate 100, and the beam structure 300 is located within this receiving space. The frame 200 is provided with a first mounting hole 210, and the bottom cover plate 100 is provided with a second mounting hole 110. The bottom cover plate 100 and the frame 200 are connected by bolts 111 (e.g., bolts provided in the first mounting hole 210 and the second mounting hole 110)... Figure 2 As shown, Figure 3 The connection is fixed using bolts (which are concealed in the middle). Taking a connection structure including a magnet 310 as an example, a magnet 310 is provided on the side of the beam structure 300 facing the bottom cover plate 100. The bottom cover plate 100 is made of magnetic metal material, and the magnet 310 attracts and fixes the bottom cover plate 100. Therefore, this disclosure achieves the fixation of the bottom cover plate 100 in the battery box through the mechanical connection of bolts 111 (or snap-fit) and the magnetic attraction of the magnet 310.

[0058] It should be noted that the following content will be combined with Figures 1 to 11 Several exemplary embodiments of this disclosure will be described in detail. In these embodiments, the connection structure provided in the first region 401 includes a magnet 310 as an example. It should be understood that the specific details such as the setting position, number and relative arrangement of the magnet 310 can be understood as similar designs can be used when other designs (such as hook and loop fasteners) are used in the connection structure.

[0059] like Figure 1 and Figure 3 As shown, in one embodiment of this disclosure, the beam structure 300 may include a first beam 301 extending along a first direction, which can be referred to as direction D1 shown in the figures. The first beam 301 divides the accommodating space into a battery compartment and an electrical compartment. The battery compartment is used to accommodate individual battery cells, and the electrical compartment is used to accommodate electrical components. Furthermore, in various possible embodiments conforming to the disclosed design concept, depending on the different design needs of the battery device, the first beam 301 may divide the accommodating space into other compartments, such as a cooling water pipe compartment for accommodating cooling water pipes, and is not limited to the design of the aforementioned battery compartment and electrical compartment. Based on this, the beam structure 300 also includes a second beam 302 extending along a second direction, which can be referred to as direction D2 shown in the figures, and the second direction is perpendicular to the first direction. Based on this, a magnet 310 (which may also be a hook and loop fastener, as will be described below) may be disposed on the bottom surface of the second beam 302. For example, if the first direction is the width direction of the vehicle (i.e., the left-right direction), and the second direction is the length direction of the vehicle (i.e., the front-back direction), then the first beam 301 can be understood as a "crossbeam," and the second beam 302 can be understood as a "longitudinal beam." Accordingly, this disclosure can provide magnets 310 at least in the longitudinal beams to attract and fix the bottom guard plate 100 to the longitudinal beams. That is, in addition to enhancing the structural strength and torsional strength of the battery box, this disclosure also utilizes the longitudinal beams to fix the magnets 310 (which may also include the buffer layer 330 described below). In some other embodiments of this disclosure, the first direction may also be the length direction of the vehicle, and the second direction may also be the width direction of the vehicle. In this case, this disclosure provides magnets 310 at least in the crossbeams to attract and fix the bottom guard plate 100 to the crossbeams, and is not limited to this embodiment.

[0060] like Figure 1 and Figure 3As shown, based on the structural design of the beam structure 300 including a first beam 301 and the first beam 301 being provided with a magnet 310, in one embodiment of this disclosure, the battery box proposed in this disclosure may include at least two second beams 302, such as, but not limited to, the three second beams 302 shown in the figures. Furthermore, all second beams 302 are respectively provided with magnets 310. Through the above structural design, this disclosure can utilize the magnets 310 to achieve adsorption and fixation between the bottom protective plate 100 and all the second beams 302, further optimizing the fixing effect of the bottom protective plate 100, especially its central portion (i.e., the portion other than the edge portion connected to the frame 200 by bolts 111). Based on this, compared to the scheme where all the second beams 302 are fixedly connected to the bottom protective plate 100 using a bolted connection structure, this disclosure can minimize the number of mechanical connection structures such as bolts (or clips), that is, completely eliminate the bolted connection structure between the beam structure 300 and the bottom protective plate 100. In other embodiments of this disclosure, the beam structure 300 may also include a plurality of parallel beams extending in other directions, such as the two first beams 301 shown in the figures. Furthermore, these first beams 301 may also be provided with connecting structures, for example, all first beams 301 may be provided with connecting structures (i.e., reference...). Figure 7 As shown in the diagram, for example, a portion of the first beam 301 may have a connecting structure while another portion of the first beam 301 may not have a connecting structure. In other words, in various possible embodiments that conform to the design concept of this disclosure, the battery box may include at least two parallel beam structures 300. For the at least two parallel beam structures 300, all beam structures 300 may be provided with connecting structures, or at least one beam structure 300 may be provided with a connecting structure while at least another beam structure 300 may not have a connecting structure, and neither is limited to this embodiment.

[0061] like Figure 3 As shown, in one embodiment of this disclosure, the bottom surface of the first beam 301 and the bottom surface of the second beam 302 (e.g., the first region 401) can be designed to be flush. Additionally, the end of the second beam 302 can be connected to the side of the first beam 301. Accordingly, this disclosure can reduce the vertical space occupied by the beam structure 300 (e.g., the second beam 302) inside the battery pack, which is beneficial for improving the energy density of the battery pack. In other embodiments of this disclosure, the first beam 301 and the second beam 302 can also adopt various other possible arrangements and connection methods. For example, the second beam 302 can be connected to the bottom surface of the first beam 301 via its own top surface, and is not limited to this embodiment.

[0062] See Figure 6 , Figure 6 The diagram shows a representative exploded perspective view of a battery housing that embodies the principles of this disclosure in another exemplary embodiment.

[0063] like Figure 6 As shown, different from Figure 3 The illustrated embodiment employs a structural design where magnets 310 are provided on all second beams 302. In one embodiment of this disclosure, taking a battery housing comprising at least two second beams 302 as an example, at least one second beam 302 is provided with a magnet 310, and at least the other second beam 302 is not provided with a magnet 310. Through the above structural design, this disclosure can reduce the number of magnets 310, reduce structural complexity, reduce the number of parts, and reduce costs.

[0064] See Figure 7 , Figure 7 The diagram shows a representative exploded perspective view of a battery housing that embodies the principles of this disclosure in another exemplary embodiment.

[0065] like Figure 7 As shown, different from Figure 3 and Figure 6 The illustrated embodiment uses a structural design where the magnet 310 is only disposed on the second beam 302. In another embodiment of this disclosure, taking the battery box including the first beam 301 as an example, the magnet 310 can also be disposed on the bottom surface of the first beam 301. Through the above structural design, this disclosure can further optimize the fixing effect of the bottom protective plate 100.

[0066] See Figure 8 , Figure 8 The diagram shows a representative exploded perspective view of a battery housing that embodies the principles of this disclosure in another exemplary embodiment.

[0067] like Figure 8 As shown, different from Figures 3 to 7 The illustrated embodiment uses a structure where the second beam 302 is only equipped with a magnet 310. In one embodiment of this disclosure, taking at least one second beam 302 without a magnet 310 as an example, the second beam 302 without a magnet 310 can be provided with a third mounting hole 320, and the bottom cover plate 100 is provided with a fourth mounting hole 120. The bottom cover plate 100 and the second beam 302 are fixedly connected via bolts or clips (not shown in the figures) provided in the third mounting hole 320 and the fourth mounting hole 120. That is, the beam structure can also be connected to the bottom cover plate 100 via bolts. In other words, the connection between the bottom cover plate 100 and the first region 401 can be achieved solely through a connection structure, or it can be achieved through a combination of a connection structure and bolts. Through the above structural design, since the bottom cover plate 100 is fixed to part of the second beam 302 using a magnetic adsorption fixing method, this disclosure can still achieve the goal of reducing bolt connection structures.

[0068] See Figure 9 , Figure 9The diagram shows a representative exploded perspective view of a battery housing that embodies the principles of this disclosure in another exemplary embodiment.

[0069] like Figure 9 As shown, different from Figure 8 The illustrated embodiment employs a structural design where a portion of the second beam 302 is provided only with magnets 310 and another portion of the second beam 302 is provided only with third mounting holes 320. In one embodiment of this disclosure, for a single first beam 301, both third mounting holes 320 and magnets 310 can be provided simultaneously, and the third mounting holes 320 and magnets 310 can be arranged at intervals along the extension direction of the first beam 301. Through the above structural design, since magnets 310 and third mounting holes 320 are respectively provided on the same first beam 301, the number of third mounting holes 320 required for the first beam 301 can be reduced by using magnets 310, thus achieving a similar fixing effect. Therefore, this disclosure still achieves the goal of reducing bolted connection structures.

[0070] As described above, in various possible embodiments conforming to the design concept of this disclosure, for a single beam structure, only connection structures (e.g.) may be required. Figure 8 The second beam 302 located on both sides can also be connected to the bottom guard plate 100 by bolts only (e.g. Figure 8 The second beam 302 located in the middle can be provided, or a connecting structure can be provided and connected to the bottom guard plate 100 by bolts (e.g. Figure 9 In the second beam 302, the bolts and connecting structures can be arranged at intervals, or no connecting structures and connecting bolts can be provided at all (e.g. Figure 6 The second beam 302 located in the middle.

[0071] Furthermore, in some embodiments not illustrated in this disclosure, the third mounting hole 320 in the above embodiments may also be provided on the first beam 301. For example, all first beams 301 may be provided with the third mounting hole 320, or some first beams 301 may be provided with the third mounting hole 320. A single first beam 301 may only have the third mounting hole 320, or it may have both the third mounting hole 320 and the magnet 310, or it may not have both. In other words, in various possible embodiments conforming to the design concept of this disclosure, any beam structure 300 may have the third mounting hole 320, and thereby be fixedly connected to the bottom guard plate 100 via bolts or clips. It should be understood that a single first beam 301 may also have both the third mounting hole 320 and the magnet 310, and is not limited to this embodiment.

[0072] like Figure 4As shown, in one embodiment of this disclosure, the beam structure 300 may be provided with at least two magnets 310, such as, but not limited to, seven magnets 310 shown in the figures, which are spaced apart along the extension direction of the beam structure 300. Furthermore, the magnets 310 provided on the same beam structure 300 may be arranged at uniform intervals. The number and specifications (e.g., magnetic induction intensity) of the magnets 310 can be flexibly selected to match the material and weight of the bottom protective plate 100. Through the above structural design, this disclosure enables a more uniform fixation effect between the beam structure 300 and the bottom protective plate 100 via the attraction of the magnets 310, further improving the fixation effect of the bottom protective plate 100.

[0073] like Figure 4 and Figure 5 As shown, in one embodiment of this disclosure, taking the connection structure including a magnet 310 as an example, a buffer layer 330 can be provided on the bottom surface of the beam structure 300. The bottom surface of the buffer layer 330 is provided with an assembly groove 331, in which the magnet 310 can be disposed. For example, the magnet 310 can be connected to the buffer layer 330 (e.g., the groove wall of the assembly groove 331) via structural adhesive. Through the above structural design, this disclosure can utilize the buffer layer 330 to provide buffering and shock absorption between the beam structure 300 and the bottom guard plate 100. Furthermore, the buffer layer 330 is used to accommodate and assemble the magnet 310, which helps reduce noise generated by vibration of the bottom guard plate 100 during vehicle operation, prevents damage to the magnet 310 due to collision, reduces the impact between the beam structure 300 and the bottom guard plate 100, and improves the structural reliability and stability of the battery box.

[0074] like Figure 5 As shown, based on the structural design of the buffer layer 330 having an assembly groove 331 for accommodating the magnet 310, in one embodiment of this disclosure, the assembly groove 331 can be a through groove penetrating the buffer layer 330. Furthermore, the top surface of the magnet 310 can be connected to the bottom surface of the beam structure 300, for example, via structural adhesive.

[0075] Based on the structural design of the beam structure 300 with a buffer layer 330, in one embodiment of this disclosure, the material of the buffer layer 330 can be rubber or silicone.

[0076] See Figure 10 , Figure 10 The diagram shows a structural schematic of a beam structure 300 in another exemplary embodiment of a battery housing that embodies the principles of this disclosure.

[0077] like Figure 10 As shown, different from Figure 4The illustrated embodiment employs a structural design where a magnet 310 is disposed on the buffer layer 330. In one embodiment of this disclosure, taking the connection structure including a magnet 310 as an example, the magnet 310 can be disposed on the beam structure 300. Specifically, an assembly groove 340 can be provided on the side surface of the beam structure 300 facing the bottom protective plate 100, and the magnet 310 is disposed in the assembly groove 340.

[0078] In one embodiment of this disclosure, the bottom protective plate 100 can be made of stainless steel, such as DP590 steel, DP980 steel, or HS1300 steel. Furthermore, the top surface 101 of the bottom protective plate 100 can be rough-milled to achieve a surface roughness Ra greater than or equal to 12.5 μm. Through this design, this disclosure increases the friction between the bottom protective plate 100 and the bottom of the battery box body 400 (e.g., the bottom surface of the beam structure 310, the bottom surface of the magnet 310, or the bottom surface of the bottom plate 410 described below). It should be noted that the rough milling of the top surface 101 of the bottom protective plate 100 can be performed on only the portion of the top surface 101 corresponding to the first region 401 (e.g., the bottom surface of the second beam 302 or the first beam 301), or the entire top surface 101 can be rough-milled.

[0079] See Figure 11 , Figure 11 The diagram shows a representative exploded perspective view of a battery housing that embodies the principles of this disclosure in another exemplary embodiment.

[0080] like Figure 11 As shown, different from Figures 1 to 10 The illustrated embodiment employs a structural design where the connecting structure is located on the bottom surface of the beam structure 300. In one embodiment of this disclosure, the battery box body 400 may include a frame 200, a beam structure 300, and a base plate 410. The frame 200 is located on the top surface of the base plate 410, together enclosing the receiving space of the battery box. The beam structure 300 is located on the top surface of the base plate 410 and situated within the receiving space. Furthermore, a bottom protective plate 100 may be provided on the bottom surface of the base plate 410. The area of ​​the bottom surface of the base plate 410 corresponding to the beam structure 300 is designated as a first area 401, and the area of ​​the bottom surface of the base plate 410 corresponding to the frame 200 is designated as a second area 402. Accordingly, the connecting structure can be provided on the bottom surface of the base plate 410.

[0081] It should be noted that, in Figure 11 In the illustrated embodiments, only the connection structures provided on the base plate 410 are shown to correspond to the positions of the beam structure 300. In other embodiments of this disclosure, when the battery box body 400 includes the base plate 410, the connection structures may also be provided at other positions on the base plate 410 that are offset from the beam structure 300.

[0082] See Figure 12 and Figure 13 , Figure 12 and Figure 13 The diagrams shown represent two different perspective exploded views of a battery housing that embodies the principles of this disclosure in another exemplary embodiment.

[0083] like Figure 12 and Figure 13 As shown, different from Figures 1 to 11 The illustrated embodiment employs a connecting structure including a magnet 310. In one embodiment of this disclosure, the connecting structure may include hook and loop fasteners. For example, the hook and loop fasteners specifically include a first hook and loop fastener 350 disposed in the first region 401 and a second hook and loop fastener 130 disposed on the top surface of the bottom protective plate 100. The second hook and loop fastener 130 are correspondingly arranged with the first hook and loop fastener 350 and can be adhesively fitted. Figure 12 and Figure 13 The first mounting hole 210, the second mounting hole 110, and the bolt 111 are omitted.

[0084] It should be noted that the battery housings shown in the accompanying drawings and described in this specification are merely a few examples among many battery housings from which the principles of this disclosure can be employed. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the battery housings shown in the accompanying drawings or described in this specification.

[0085] Based on the above detailed description of several exemplary embodiments of the battery housing proposed in this disclosure, an exemplary embodiment of the battery pack proposed in this disclosure will be described below.

[0086] In one embodiment of this disclosure, the battery pack proposed in this disclosure includes the battery housing proposed in this disclosure and described in detail in the above embodiments.

[0087] It should be noted that the battery packs shown in the accompanying drawings and described in this specification are merely a few examples among many battery packs capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the battery packs shown in the accompanying drawings or described in this specification.

[0088] Based on the above detailed description of an exemplary embodiment of the battery pack disclosed herein, an exemplary embodiment of the vehicle disclosed herein will be described below.

[0089] In one embodiment of this disclosure, the vehicle proposed in this disclosure includes the battery pack proposed in this disclosure and described in the above embodiments.

[0090] In one embodiment of this disclosure, the vehicle proposed in this disclosure can be a hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicles. The vehicle can be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0091] It should be noted that the vehicles shown in the accompanying drawings and described in this specification are merely a few examples among many vehicles capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the vehicles shown in the accompanying drawings or described in this specification.

[0092] In summary, the battery housing proposed in this disclosure includes a battery housing body 400 and a bottom protective plate 100 disposed at the bottom of the battery housing body 400. The bottom of the battery housing body 400 has a first region 401 and a second region 402 surrounding the periphery of the first region 401. The first region 401 is provided with a connecting structure, which is at least one of a magnet 310, a hook and loop fastener, or a snap fastener. The battery housing body 400 is connected to the bottom protective plate 100 in the first region 401 via the connecting structure, and is connected to the bottom protective plate 100 in the second region 402 via bolts 111. Through the above structural design, this disclosure reduces or eliminates the bolt connection structure between the first region 401 at the bottom of the battery housing body 400 and the bottom protective plate 100, reducing the wall thickness requirements of the battery housing body 400 when arranging the bolt connection structure, thereby achieving size reduction, weight reduction, and material cost reduction, which is beneficial to increasing the energy density of the battery pack and to achieving lightweight design. Furthermore, due to the reduction in bolted connections, this disclosure improves operational efficiency and reduces maintenance costs when disassembling the underbody protection plate 100. In addition, besides being fixedly connected to the second region 402 via bolts 111, the underbody protection plate 100 and the first region 401 at the bottom of the battery box body 400 are still fixed together via magnets 300, hooks and snaps, etc. Therefore, the underbody protection plate 100 does not need to be designed with increased thickness, thus avoiding abnormal noise problems caused by its own structure under vehicle operating conditions, thereby further reducing the weight and material costs of the underbody protection plate 100.

[0093] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0094] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding the specification and drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0095] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0096] It should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein according to the specific circumstances.

[0097] Although terms such as “first” and “second” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0099] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery housing, characterized in that, The battery box includes a battery box body (400) and a bottom guard plate (100) disposed at the bottom of the battery box body (400); the bottom of the battery box body (400) has a first region (401) and a second region (402) surrounding the periphery of the first region (401); the first region (401) is provided with a connecting structure, the connecting structure being at least one of a magnet (310), a hook and loop fastener, and the battery box body (400) is connected to the bottom guard plate (100) in the first region (401) via the connecting structure, and is connected to the bottom guard plate (100) in the second region (402) via bolts.

2. The battery housing according to claim 1, characterized in that, The battery box body (400) includes a frame (200) and a beam structure (300); the frame (200) encloses the receiving space of the battery box body, and the bottom surface of the frame (200) is the second region (402); the beam structure (300) is disposed in the receiving space, and the bottom surface of the beam structure (300) is the first region (401).

3. The battery housing according to claim 2, characterized in that: The beam structure (300) includes a first beam (301) extending along a first direction, the first beam (301) dividing the accommodating space into a battery compartment and an electrical compartment, the battery compartment for accommodating individual battery cells, and the electrical compartment for accommodating electrical components; wherein, the beam structure (300) further includes a second beam (302) extending along a second direction perpendicular to the first direction, the connecting structure being disposed on the bottom surface of the second beam (302); and / or The beam structure (300) includes a first beam (301) extending along a first direction, the first beam (301) dividing the accommodating space into a battery compartment and an electrical compartment, the battery compartment for accommodating individual battery cells, and the electrical compartment for accommodating electrical components; wherein the connecting structure is disposed on the bottom surface of the first beam (301); and / or The beam structure (300) is provided with at least two of the connecting structures, and the at least two connecting structures are arranged at intervals along the extension direction of the beam structure (300); and / or The beam structure (300) is connected to the bottom guard plate (100) by bolts.

4. The battery housing according to claim 2, characterized in that, The battery housing includes at least two beam structures (300) arranged in parallel, wherein, for the at least two beam structures (300) arranged in parallel: All of the beam structures (300) are respectively provided with the connection structure; or At least one of the beam structures (300) is provided with the connection structure, and at least another beam structure (300) is not provided with the connection structure.

5. The battery housing according to claim 2, characterized in that, The connection structure includes a magnet (310), the bottom surface of the beam structure (300) is provided with a buffer layer (330), the bottom surface of the buffer layer (330) is provided with an assembly groove (331), and the magnet (310) is disposed in the assembly groove (331).

6. The battery housing according to claim 5, characterized in that: The assembly slot is a through slot penetrating the buffer layer (330), and the top surface of the magnet (310) is connected to the bottom surface of the beam structure (300); and / or The buffer layer (330) is made of rubber or silicone.

7. The battery housing according to claim 1, characterized in that, The battery box body (400) includes a frame (200), a beam structure (300), and a base plate (410); the frame (200) is disposed on the top surface of the base plate (410) and together encloses the receiving space of the battery box body; the beam structure (300) is disposed on the top surface of the base plate (410) and located within the receiving space; wherein, the bottom protective plate (100) is disposed on the bottom surface of the base plate (410), the area of ​​the bottom surface of the base plate (410) corresponding to the beam structure (300) is the first area (401), and the area corresponding to the frame (200) is the second area (402).

8. The battery housing according to claim 1, characterized in that, The bottom protective plate (100) is made of stainless steel; the top surface (101) of the bottom protective plate (100) is rough milled so that the surface roughness Ra of the top surface (101) is greater than or equal to 12.5 μm.

9. A battery pack, characterized in that, The battery pack includes the battery housing as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, The vehicle includes the battery pack as described in claim 9.

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