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 plurality of frames, connecting parts and protective bulges, an accommodating space of the battery box body is defined by the plurality of frames, and the plurality of frames comprise a first frame; the connecting part is arranged on the first frame; the protective protrusion is arranged on the outer side face, back to the containing space, of the first frame. In the height direction, at least part of the protective protrusion is located below the connecting component. Through the structural design, impact protection on the first frame is realized by utilizing the protective bulges, and the structural strength of the battery box body is improved. Furthermore, for impact from the lower portion, due to the fact that at least part of the protective protrusion is located below the connecting component, more effective impact protection can be provided for the connecting component arranged on the first frame, the connecting component is prevented from being damaged, and safety and reliability are improved.

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 battery pack of an electric vehicle is usually located at the bottom of the vehicle. When the vehicle is bumped at the bottom, the battery pack is easily damaged. Currently, the battery pack is usually protected by a bottom guard plate installed at the bottom of the battery box.

[0003] However, when a vehicle encounters rocks or other foreign objects hitting the bottom of the vehicle while driving on rough roads, the frame of the battery box (such as the bottom area of ​​the front frame of the battery pack) is also easily impacted, causing the battery box frame to crack, the seal to fail, or the connecting parts of the battery pack located on the frame (such as high-voltage connectors, liquid cooling inlet and outlet water pipes, etc.) to be damaged, which in turn leads to damage to the battery pack function and creates safety risks. Utility Model Content

[0004] To overcome the problems existing in the related technologies, this disclosure provides a battery housing, a battery pack, and a vehicle.

[0005] According to a first aspect of the present disclosure, a battery housing is provided, comprising a plurality of frame sides, a connecting member, and a protective protrusion; the plurality of frame sides enclose a receiving space of the battery housing, the plurality of frame sides including a first frame side; the connecting member is disposed on the first frame side; the protective protrusion is disposed on the outer side of the first frame side facing away from the receiving space; wherein, along the height direction, at least a portion of the protective protrusion is located below the connecting member.

[0006] In some exemplary embodiments of this disclosure, all of the protective protrusions extend along a first horizontal direction, which is parallel to the outer surface; and along the height direction, all of the protective protrusions are located below the connecting member.

[0007] In some exemplary embodiments of this disclosure, the protective protrusion includes a first portion and a second portion; the first portion extends along a first horizontal direction; along the height direction, the first portion is located below the connecting member; the second portion is arranged with the connecting member along the first horizontal direction; along the height direction, the second portion is located above the first portion.

[0008] In some exemplary embodiments of this disclosure, at least a portion of the protective protrusion is connected to the bottom edge of the outer side surface.

[0009] In some exemplary embodiments of this disclosure, wherein: the connecting member includes an inlet and an outlet; at least a portion of the protective protrusion is located below the inlet and outlet in the height direction; and / or, the connecting member includes an electrical interface; at least a portion of the protective protrusion is located below the electrical interface in the height direction.

[0010] In some exemplary embodiments of this disclosure, the connecting component includes a battery mounting structure; at least a portion of the protective protrusion is located below the battery mounting structure along the height direction.

[0011] In some exemplary embodiments of this disclosure, the battery mounting structure is provided with a mounting hole that extends through the height direction; the protective protrusion is provided with a clearance hole or clearance groove that extends through the height direction, and the clearance hole or clearance groove is arranged in a position corresponding to the mounting hole.

[0012] In some exemplary embodiments of this disclosure, the protective protrusion is welded to the battery mounting structure.

[0013] In some exemplary embodiments of this disclosure, the battery housing further includes a base plate; the edge of the base plate is fixed to the bottom surface of the first frame, and the portion of the bottom surface of the first frame used to fix the base plate is a mounting interface; wherein, along the height direction, the bottom surface height of the protective protrusion is lower than the height of the mounting interface.

[0014] In some exemplary embodiments of this disclosure, the bottom surface of the protective protrusion includes a flat portion and a beveled portion; the height of the flat portion is lower than the height of the mounting interface; the beveled portion connects the flat portion and the first frame so that the area of ​​the bottom surface of the protective protrusion adjacent to the first frame forms a clearance space.

[0015] In some exemplary embodiments of this disclosure, the protective protrusion has a cavity inside.

[0016] In some exemplary embodiments of this disclosure, the protective protrusion is an integral structure with the first frame.

[0017] 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.

[0018] According to a third aspect of the present disclosure, a vehicle is provided, wherein the vehicle includes a battery pack as presented in the present disclosure and described in the above embodiments.

[0019] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The battery housing proposed in this disclosure includes multiple frames, connecting components, and protective protrusions; the multiple frames enclose a receiving space of the battery housing, and the multiple frames include a first frame; the connecting component is disposed on the first frame; the protective protrusion is disposed on the outer side of the first frame facing away from the receiving space; along the height direction, at least a portion of the protective protrusion is located below the connecting component. Through the above structural design, this disclosure utilizes the protective protrusion to achieve impact protection for the first frame, thereby improving the structural strength of the battery housing. Furthermore, for impacts from below, since at least a portion of the protective protrusion is located below the connecting component, this disclosure can provide more effective impact protection for the connecting component disposed on the first frame, avoiding damage to the connecting component and improving safety and reliability.

[0020] 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

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the structure of a battery housing according to some exemplary embodiments of the present disclosure;

[0023] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the diagram;

[0024] Figure 3 yes Figure 2 A diagram from another perspective;

[0025] Figure 4 yes Figure 2 A cross-sectional schematic diagram of the first border is shown.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. First border;

[0028] 101. Outer surface;

[0029] 102. Installation interface;

[0030] 210. Inlet and outlet;

[0031] 220. Electrical interface;

[0032] 230. Battery mounting structure;

[0033] 231. Mounting hole;

[0034] 300. Protective protrusions;

[0035] 301. Planar part;

[0036] 302. Bevel face;

[0037] 310. Clearance groove;

[0038] 320. Cavity;

[0039] 400. Base plate;

[0040] 410. Fasteners;

[0041] C. Avoid space. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] See Figure 1 The illustration shows a partial schematic diagram of the battery housing proposed in this disclosure from a single perspective, specifically illustrating the structural schematic of the battery housing. In this exemplary embodiment, the battery housing proposed in this disclosure is described using an application to an on-board power battery 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 in order to apply the relevant designs of this disclosure to other types of battery devices, and these changes shall still be within the scope of the principles of the battery housing proposed in this disclosure.

[0045] like Figure 1 As shown, in one embodiment of this disclosure, the battery housing includes multiple frames, connecting components, and protective protrusions 300. See also... Figures 2 to 4 , Figure 2 China representatively shows Figure 1An enlarged schematic diagram of part A in the diagram; Figure 3 China representatively shows Figure 2 A diagram from another perspective; Figure 4 A representative cross-sectional view of the first frame 100 is shown in the figure. The structure, connection method, and functional relationship of the main components of the battery housing proposed in this disclosure will be described in detail below with reference to the above figures.

[0046] like Figures 1 to 4 As shown, in one embodiment of this disclosure, multiple frames enclose a housing space for the battery box. This housing space includes, for example, a battery compartment and an electrical compartment. The battery compartment can accommodate battery modules, and the electrical compartment can accommodate electrical components of the battery pack (e.g., BMS). The multiple frames include a first frame 100. A connecting component is disposed on the first frame 100. A protective protrusion 300 is disposed on the outer side 101 of the first frame 100. The outer side 101 of the first frame 100 can be understood as the side surface of the first frame 100 facing away from the housing space of the battery box. Furthermore, at least a portion of the protective protrusion 300 is located below the connecting component along the height direction. This height direction can be, for example, perpendicular to the bottom plate 400 of the battery box and parallel to the outer side 101, specifically referring to direction D1 shown in the accompanying drawings. Through the above structural design, this disclosure utilizes the protective protrusion 300 to achieve impact protection for the first frame 100, thereby improving the structural strength of the battery box. Furthermore, for impacts from below, since at least a portion of the protective protrusion 300 is located below the connecting member, this disclosure can provide more effective impact protection for the connecting member disposed on the first frame 100, preventing damage to the connecting member and improving safety and reliability.

[0047] like Figure 2 and Figure 3 As shown, in one embodiment of this disclosure, the entire protective protrusion 300 extends along a first horizontal direction, which can be, for example, a horizontal direction parallel to the outer surface 101, specifically referring to direction D2 shown in the accompanying drawings. In other words, the protective protrusion 300 can have a straight "I" shape. Furthermore, along the height direction, the entire protective protrusion 300 can be located below the connecting member. Through the above structural design, while satisfying the impact protection function of the protective protrusion 300 for the connecting member, this disclosure achieves a relatively simple structural design for the protective protrusion 300, facilitating manufacturing.

[0048] Different from Figure 2 and Figure 3The protective protrusion 300 shown in the illustrated embodiment has a "I"-shaped structure. In another embodiment not illustrated in this disclosure, the protective protrusion 300 may include a first part and a second part. Specifically, the first part extends along a first horizontal direction. In other words, the first part may have a "I"-shaped structure. Along the height direction, the first part is located below the connecting member. The second part is arranged along the first horizontal direction with the connecting member. Furthermore, along the height direction, the second part is located above the first part. Through the above structural design, this disclosure can utilize the second part of the protective protrusion 300 to provide lateral impact protection to the connecting member, further improving safety and reliability.

[0049] Based on the structural design of the protective protrusion 300, which includes a first part and a second part, in another embodiment not shown in this disclosure, the first part and the second part may be connected, or the first part and the second part may be in contact but not connected, or the first part and the second part may be arranged at intervals.

[0050] Based on the structural design of the protective protrusion 300 including the first part and the second part, in another embodiment not shown in this disclosure, the number of the second parts can be one or more. When there are multiple second parts, the multiple second parts can be arranged at intervals along the first horizontal direction. On this basis, along the first horizontal direction, the connecting parts can be located between at least two adjacent second parts.

[0051] like Figure 3 and Figure 4 As shown, in one embodiment of this disclosure, at least a portion of the protective protrusion 300 can be connected to the bottom edge of the outer side surface 101 of the first frame 100. Through the above structural design, this disclosure allows the protective protrusion 300 to be arranged as low as possible on the outer side surface 101 of the first frame 100, freeing up more space on the outer side surface 101 for arranging connecting components and other structures. This avoids the protective protrusion 300 being too high and encroaching on the space for arranging connecting components and other structures, further improving structural rationality. Simultaneously, it provides greater operational space for the connection and assembly of connecting components, which helps reduce assembly difficulty. In other embodiments of this disclosure, the connection position between the protective protrusion 300 and the first frame 100 can also be located at intervals above the bottom edge of the outer side surface 101, and is not limited to this embodiment.

[0052] like Figure 2 and Figure 3As shown, in one embodiment of this disclosure, the connecting component may include an inlet / outlet 210. This inlet / outlet 210 can be connected within the battery housing to the medium flow channel of a heat exchange device (e.g., a liquid cooling plate), and extends beyond the battery housing to connect to an external medium circulation heat exchange system and / or storage mechanism. In other words, the inlet / outlet 210 can be understood as a connecting component for connecting the heat exchange medium. Furthermore, at least a portion of the protective protrusion 300 can be located below the inlet / outlet 210 along the height direction. Through the above structural design, this disclosure provides more effective impact protection for the inlet / outlet 210, preventing damage to the inlet / outlet 210, ensuring the circulation of the heat exchange medium, and improving the thermal performance of the battery pack.

[0053] like Figure 2 and Figure 3 As shown, in one embodiment of this disclosure, the connecting component may include an electrical interface 220. This electrical interface 220 can be connected to electrical components of the battery module and / or battery pack within the battery housing, and extends out of the battery housing to connect to the vehicle's control system and / or drive system. In other words, the electrical interface 220 can be understood as a connecting component that enables electrical connection. Furthermore, at least a portion of the protective protrusion 300 can be located below the electrical interface 220 along the height direction. Through the above structural design, this disclosure provides more effective impact protection for the electrical interface 220, preventing damage to the electrical interface 220 and ensuring effective transmission of electrical signals and a stable supply of electrical power.

[0054] like Figure 2 and Figure 3 As shown, in one embodiment of this disclosure, the connecting component may include a battery mounting structure 230, which, for example but not limited to mounting ears, can be used for mounting and assembling the battery pack in the vehicle. In other words, the mounting structure can be understood as a connecting component that enables the structural connection between the battery pack and the vehicle. Based on this, at least a portion of the protective protrusion 300 can be located below the battery mounting structure 230 along the height direction. Through the above structural design, this disclosure can provide more effective impact protection for the battery mounting structure 230, preventing damage to the battery mounting structure 230 and ensuring the assembly stability and reliability of the battery pack in the vehicle.

[0055] It should be noted that, Figure 2 and Figure 3The illustrated embodiment uses a connecting component including an inlet / outlet 210, an electrical interface 220, and a battery mounting structure 230 as an example. The protective protrusion 300 is located simultaneously below these connecting components. Therefore, this disclosure provides more comprehensive impact protection for the connecting components, including the inlet / outlet 210, electrical interface 220, and battery mounting structure 230. Furthermore, the connecting components may include other structures, not limited to the three types described above. It should be understood that, to achieve impact protection for at least one connecting component, in other embodiments of this disclosure, the protective protrusion 300 may be located only below one part of the connecting component, and not below another part. These embodiments also conform to the design concept of the battery housing proposed in this disclosure and are not limited to the embodiments shown in the accompanying drawings.

[0056] like Figure 3 As shown, based on the structural design of the connecting component including the battery mounting structure 230, in one embodiment of this disclosure, the battery mounting structure 230 is provided with a mounting hole 231 extending through the height direction. Furthermore, the protective protrusion 300 may be provided with a clearance groove 310 extending through the height direction, the clearance groove 310 being arranged correspondingly to the mounting hole 231. Through the above structural design, when mounting the battery pack using a mounting fastener (not shown in the figures) passing through the mounting hole 231, the clearance groove 310 can be used to avoid the mounting fastener, improving operational convenience and reducing assembly difficulty. In other embodiments of this disclosure, the protective protrusion 300 may also be provided with a clearance hole extending through the height direction, the clearance hole being arranged correspondingly to the mounting hole 231, and this is not limited to this embodiment.

[0057] Based on the structural design of the connecting component including the battery mounting structure 230, in one embodiment of this disclosure, the protective protrusion 300 and the battery mounting structure 230 can be welded together. Through the above structural design, this disclosure achieves a structural connection between the protective protrusion 300 and the battery mounting structure 230, which can improve the structural strength of the battery box, better achieve shared stress, improve the impact resistance of the protective protrusion 300, and optimize the stability and reliability of the battery pack when mounted on a vehicle. In other embodiments of this disclosure, the protective protrusion 300 and the battery mounting structure 230 can also be connected in other ways, for example, the protective protrusion 300 and the battery mounting structure 230 can be an integral structure. Alternatively, the protective protrusion 300 and the battery mounting structure 230 may not have a connection relationship, and are not limited to this embodiment.

[0058] like Figure 3 and Figure 4As shown, in one embodiment of this disclosure, the battery housing further includes a base plate 400. The edge of the base plate 400 is fixed to the bottom surface of the first frame 100, and the portion of the bottom surface of the first frame 100 used to fix the base plate 400 is a mounting interface 102, which is the sealing surface between the first frame 100 and the base plate 400. Furthermore, along the height direction, the height of the bottom surface of the protective protrusion 300 can be lower than the height of the mounting interface 102. In other words, the protective protrusion 300 extends to a position lower than the mounting interface 102. Through the above structural design, this disclosure can utilize the protective protrusion 300 to achieve impact protection at the connection between the base plate 400 and the first frame 100, preventing damage to the connection and ensuring a reliable sealed connection between the base plate 400 and the first frame 100. Specifically, when the battery pack is impacted by an obstacle on one side of the first frame 100, the protective protrusion 300 serves as the first contact point, which can prevent the inlet / outlet 210, electrical interface 220, battery mounting structure 230 and the connection between the base plate 400 and the first frame 100 located above it from being directly impacted.

[0059] like Figure 4 As shown, based on the structural design of the battery housing including the base plate 400, in one embodiment of this disclosure, the bottom surface of the protective protrusion 300 may include a flat portion 301 and a beveled portion 302. Specifically, the height of the flat portion 301 is lower than the height of the mounting interface 102 of the first frame 100. The beveled portion 302 connects the flat portion 301 and the first frame 100, so that the area of ​​the bottom surface of the protective protrusion 300 adjacent to the first frame 100 forms a clearance space C. With the above structural design, when assembling the base plate 400 and the first frame 100, for example using... Figure 3 When the fastener 410 shown secures the base plate 400 to the mounting interface 102, this disclosure can utilize the clearance space C to allow the base plate 400 and the fastener 410 to pass, leaving more space for assembly operations, improving operational convenience, and reducing assembly difficulty.

[0060] Based on the structural design of the battery housing including the base plate 400, in one embodiment of this disclosure, the base plate 400 may include a bottom protective plate. On this basis, the battery module and electrical components can be mounted on the bottom protective plate. Additionally, a heat exchange plate for the battery pack can be disposed between the battery module and the bottom protective plate; alternatively, the heat exchange plate may be disposed on the top and / or side of the battery module. In other embodiments of this disclosure, the base plate 400 may also include a heat exchange plate; that is, the aforementioned bottom protective plate may be omitted, and the heat exchange plate may be directly used as the base plate 400 of the battery housing. In this case, the battery module and electrical components may be mounted on the heat exchange plate, and this is not limited to this embodiment.

[0061] like Figure 4As shown, in one embodiment of this disclosure, a cavity 320 may be provided inside the protective protrusion 300. Through the above structural design, this disclosure can achieve a weight reduction design for the protective protrusion 300, reducing the weight of the battery box and facilitating the lightweight and compact design requirements of the battery pack. Furthermore, this disclosure can utilize the cavity 320 to allow the protective protrusion 300 to undergo a certain degree of crumple deformation upon impact, achieving deformation buffering.

[0062] In one embodiment of this disclosure, the protective protrusion 300 and the first frame 100 can be an integral structure. For example, the protective protrusion 300 and the first frame 100 can be integrally formed using processes such as integral roll forming or integral casting. Through the above structural design, this disclosure can enhance the connection strength between the protective protrusion 300 and the first frame 100, better achieve joint stress distribution, improve the impact resistance of the protective protrusion 300, and at the same time, simplify the manufacturing process and reduce manufacturing costs.

[0063] 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.

[0064] 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.

[0065] In one embodiment of this disclosure, the battery pack proposed in this disclosure includes the battery housing proposed in this disclosure and described in the above embodiments.

[0066] 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.

[0067] Based on the above detailed description of an exemplary embodiment of the battery pack proposed in this disclosure, an exemplary embodiment of the vehicle proposed in this disclosure will be described below.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] In summary, the battery housing proposed in this disclosure includes multiple frames, connecting components, and protective protrusions 300. The multiple frames enclose a receiving space for the battery housing, including a first frame 100. The connecting components are disposed on the first frame 100. The protective protrusions 300 are disposed on the outer side 101 of the first frame 100 facing away from the receiving space. Along the height direction, at least a portion of the protective protrusions 300 is located below the connecting components. Through the above structural design, this disclosure utilizes the protective protrusions 300 to achieve impact protection for the first frame 100, thereby improving the structural strength of the battery housing. Furthermore, for impacts from below, since at least a portion of the protective protrusions 300 is located below the connecting components, this disclosure can provide more effective impact protection for the connecting components disposed on the first frame 100, preventing damage to the connecting components and improving safety and reliability.

[0072] 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.”

[0073] 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.”

[0074] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 case characterized by comprising: The battery box comprises: a plurality of side frames enclosing a receiving space of the battery box, the plurality of side frames comprising a first side frame; a connecting component arranged on the first side frame; and a protective protrusion arranged on an outer side surface of the first side frame facing away from the receiving space, wherein at least part of the protective protrusion is below the connecting component in a height direction. All of the protective protrusion extends in a first horizontal direction parallel to the outer side surface, and all of the protective protrusion is below the connecting component in the height direction.

2. The battery pack of claim 1, wherein The protective protrusion comprises:

3. The battery pack of claim 1, wherein, a first part extending in the first horizontal direction, and being below the connecting component in the height direction; and a second part arranged in the first horizontal direction with the connecting component, and being above the first part in the height direction. At least part of the protective protrusion is connected to a bottom edge of the outer side surface.

4. The battery pack of claim 1, wherein 5. The battery box of claim 1, wherein: the connecting component comprises a water inlet / outlet, and at least part of the protective protrusion is below the water inlet / outlet in the height direction; and / or the connecting component comprises an electrical interface, and at least part of the protective protrusion is below the electrical interface in the height direction. The connecting component comprises a battery mounting structure, and at least part of the protective protrusion is below the battery mounting structure in the height direction.

6. The battery pack of claim 1, wherein, The battery mounting structure is provided with a mounting hole penetrating in the height direction, and the protective protrusion is provided with an avoiding hole or avoiding groove penetrating in the height direction, the avoiding hole or avoiding groove being arranged corresponding to the position of the mounting hole.

7. The battery pack of claim 6, wherein, The protective protrusion is welded to the battery mounting structure.

8. The battery pack of claim 6, wherein, The battery box further comprises:

9. The battery pack according to any one of claims 1 to 8, characterized by a bottom plate, an edge of which is fixed to a bottom surface of the first side frame, and the bottom surface of the first side frame is used for fixing the part of the bottom plate as a mounting interface; wherein a bottom surface height of the protective protrusion is lower than a height of the mounting interface in the height direction. The bottom surface of the protective protrusion comprises:

10. The battery pack of claim 9, wherein, a planar part with a height lower than the height of the mounting interface; and an inclined part connecting the planar part and the first side frame, so that an area of the bottom surface of the protective protrusion adjacent to the first side frame forms an avoiding space. The protective protrusion is provided with a cavity inside.

11. The battery pack of any one of claims 1 to 8, wherein The protective protrusion is an integral structure with the first side frame.

12. The battery pack of any one of claims 1 to 8, wherein The battery pack comprises the battery box of any one of claims 1-12.

13. A battery pack, characterized by The vehicle comprises the battery pack of claim 13.

14. A vehicle characterized by comprising: ​

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