Casing, battery and electric device

Abstract

A casing, a battery and an electric device, which relate to the technical field of batteries. The casing comprises a casing wall (1), load-bearing members (3) and connecting members (4), wherein an accommodating cavity (2) is formed by the casing wall (1) by means of enclosure, and is provided with first connecting holes (111); the first connecting holes (111) penetrate the casing wall (1) in the direction of thickness of the casing wall (1); the load-bearing members (3) are provided in the accommodating cavity (2); the connecting members (4) extend into the accommodating cavity (2) by means of the first connecting holes (111) so as to be detachably connected to the load-bearing members (3) to fix the casing wall (1) and the load-bearing members (3); and a connecting structure is provided on the side of each connecting member (4) facing the outside of the accommodating cavity (2), and is configured to be connected to a target device.

Description

Box, battery and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202322852280.6, application date October 24, 2023, and invention name “A box, battery and electrical equipment”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the field of battery technology, and in particular to a box, a battery, and an electrical device. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] In related technologies, the box is generally installed on the target device in the following manner: there is an opening on the box wall of the box, and the box has a guide, which corresponds to the opening, so that the guide can transfer the supporting force of the target device to the load-bearing member in the box, thereby realizing the support of the box by the target device.

[0006] However, the guide parts are generally welded to the openings, and welding is prone to problems such as weld depressions, and the welding strength cannot be effectively guaranteed, which can easily lead to poor installation reliability of the load-bearing parts, the guide parts and the box wall, and thus poor installation reliability of the box on the target equipment.

[0007] Summary of the Invention

[0008] The present disclosure provides a box, a battery, and an electrical device, which can improve the reliability of the box when installed on a target device.

[0009] In a first aspect, the present disclosure provides a box body, comprising a box wall, a load-bearing member, and a connecting member. The box wall encloses a receiving cavity and is provided with a first connecting hole extending through the box wall in the thickness direction. The load-bearing member is disposed within the receiving cavity. The connecting member extends into the receiving cavity through the first connecting hole to removably connect with the load-bearing member to secure the box wall to the load-bearing member. A connecting structure is provided on a side of the connecting member facing out of the receiving cavity, and the connecting structure is used to connect to a target device.

[0010] In the box provided by the present disclosure, the connecting member is detachably connected to the load-bearing member and the box wall through the first connecting hole, thereby connecting and securing the box wall and the load-bearing member together. The connecting member and the first connecting hole do not need to be welded together, which can improve the reliability of the connection. Therefore, the box provided by the present disclosure can improve the installation reliability of the box wall, the connecting member, and the load-bearing member, thereby improving the reliability of the installation of the box on the target equipment.

[0011] In a possible implementation of the present disclosure, a second connecting hole is provided on the load-bearing member, and the second connecting hole and the first connecting hole are arranged correspondingly along the axial direction. The connecting member extends into the second connecting hole through one end of the second connecting hole close to the first connecting hole to cooperate with the second connecting hole thread so as to be detachably connected to the load-bearing member.

[0012] By threading the connecting member into the second connecting hole, a detachable connection between the connecting member and the load-bearing member is achieved, which is conducive to improving the convenience of installation and making processing and manufacturing more convenient. During installation, the first connecting hole and the second connecting hole can be aligned, and then the connecting member can be extended into the first connecting hole from the end of the first connecting hole closest to the outside of the accommodating cavity, and then pass through the first connecting hole to extend into the second connecting hole to threadably engage with the second connecting hole.

[0013] In a possible implementation of the present disclosure, the load-bearing member has a first sealing portion, which is combined with the second connecting hole to close the second connecting hole, and the connecting member extends to the side of the first sealing portion close to the first connecting hole to engage with the second connecting hole thread.

[0014] By making the first sealing portion seal the second connecting hole, impurities entering the second connecting hole are not easily able to leave the second connecting hole from the end of the second connecting hole away from the first connecting hole, which is beneficial to improving the sealing effect of the box.

[0015] In a possible implementation of the present disclosure, the box body further includes a first sealing adhesive layer, through which at least one of the circumferential inner wall of the first connecting hole and the circumferential inner wall of the second connecting hole is bonded to a corresponding portion of the connecting piece.

[0016] The provision of the first sealing adhesive layer helps prevent impurities from entering the gap between the connecting piece and the first connecting hole or the second connecting hole, thereby improving the sealing effect of the box.

[0017] In a possible implementation of the present disclosure, the connecting member includes a rod portion and a stop portion fixedly connected to one end of the rod portion; the other end of the rod portion extends into the accommodating cavity through a first connecting hole so as to be detachably connected to the load-bearing member; the stop portion abuts against the end surface of the first connecting hole away from the accommodating cavity, so that in the axial direction of the first connecting hole, the load-bearing member applies a force to the box wall close to the first connecting hole, so that the box wall and the load-bearing member are fixed.

[0018] By fixing one end of the connecting piece to the load-bearing piece and the other end against the box wall, the box wall and the load-bearing piece are fixed together, which is conducive to higher reliability of installation between the load-bearing piece and the box wall, and is more convenient to install and process.

[0019] In a possible implementation of the present disclosure, the stop portion is a flange formed by the rod portion extending radially outward, and the stop portion abuts against an end surface of the first connecting hole away from the accommodating cavity in the axial direction.

[0020] By using the flange as the stopper, the reliability of the stopper abutting against the end surface of the first connecting hole away from the accommodating cavity is improved, and the processing and manufacturing of the stopper is more convenient.

[0021] In a possible implementation of the present disclosure, a circumferential profile of the blocking portion is larger than a circumferential profile of the first connecting hole.

[0022] By making the circumferential contour of the blocking portion larger than the circumferential contour of the first connecting hole, it is beneficial to improve the reliability of the abutment and also beneficial for the blocking portion to produce a better sealing effect on the first connecting hole.

[0023] In a possible implementation of the present disclosure, the box body further includes a second sealing adhesive layer, and the surface of the blocking portion abutting against the box wall is bonded to a corresponding portion of the box wall through the second sealing adhesive layer.

[0024] Providing the second sealing adhesive layer is beneficial to improving the sealing effect of the blocking portion on the first connecting hole.

[0025] In a possible implementation of the present disclosure, an outer surface of the accommodating cavity is concavely formed with a mounting groove toward the direction close to the interior of the accommodating cavity, and a first connecting hole is provided on the bottom wall of the mounting groove; the blocking portion cooperates with the mounting groove to abut against the bottom wall of the mounting groove to abut against the end face of the first connecting hole away from the interior of the accommodating cavity.

[0026] By making the blocking portion cooperate with the installation groove, the sealing effect of the blocking portion on the first connecting hole is improved, and the flatness of the outer surface of the box body is improved, which facilitates the installation between the box body and the target device.

[0027] In a possible implementation of the present disclosure, along the depth direction of the mounting groove, the end surface of one end of the mounting groove away from the bottom wall of the mounting groove is a first plane, and the end surface of one end of the blocking portion away from the bottom wall of the mounting groove is a second plane. The second plane is located in the mounting groove and is coplanar with the first plane.

[0028] By making the first plane and the second plane coplanar, the flatness of the outer surface of the box is improved, which facilitates the installation between the box and the target device.

[0029] In a possible implementation of the present disclosure, a sealing member is supported between the load-bearing member and the end surface of the first connecting hole close to the accommodating cavity along the axial direction of the first connecting hole, and the sealing member extends along the circumference of the first connecting hole.

[0030] Providing a sealing member can help improve the sealing effect between the load-bearing member and the box wall.

[0031] In a possible implementation of the present disclosure, a first sealing groove is formed on the end face of the load-bearing member near one end of the first connecting hole along the axial direction of the first connecting hole, and the sealing member includes a first sealing member, and the first sealing member is arranged in the first sealing groove; and / or a second sealing groove is formed on the end face of the first connecting hole near the accommodating cavity, and the sealing member includes a second sealing member, and the second sealing member is arranged in the second sealing groove.

[0032] By arranging the sealing member in the sealing groove, the stability of the sealing member installation is improved, thereby improving the sealing effect.

[0033] In a possible implementation of the present disclosure, the connection structure is a mounting hole opened on the connecting member, the mounting hole is axially corresponding to the first connecting hole, and the end of the mounting hole facing away from the accommodating cavity is used for the target device to extend into, so that the mounting hole is connected to the target device.

[0034] The box body is mounted on the target device through the mounting holes corresponding to the first connection holes, which is conducive to improving the installation reliability of the box body on the target device.

[0035] In a possible implementation of the present disclosure, at least a portion of the mounting hole is located in the first connecting hole, and the connecting member has a second sealing portion, which is combined with the mounting hole to close an end of the mounting hole away from the accommodating cavity.

[0036] By having the second sealing portion close the mounting hole, the sealing effect of the box body is improved.

[0037] In a possible implementation of the present disclosure, the load-bearing member has a supporting portion, which is higher than the lower side wall of the accommodating cavity in the vertical direction. The upper side of the supporting portion is used to support the battery module so that there is a gap between the battery module and the lower side wall of the accommodating cavity in the vertical direction.

[0038] By having the load-bearing members support the battery module, the load-bearing members are more fully utilized, which is beneficial to improving the structural compactness of the battery.

[0039] In a possible implementation of the present disclosure, the first connection hole is opened on the lower side wall of the accommodating cavity.

[0040] By opening the first connection hole on the lower side wall of the accommodating cavity, the distance between the first connection hole and the load-bearing member is relatively close, which is beneficial to improving the compactness of the battery structure.

[0041] In a possible implementation of the present disclosure, the load-bearing member extends along a first direction, and the first direction has an angle with the axial direction of the first connecting hole; the number of first connecting holes and connecting members is at least two, and they are arranged in a one-to-one correspondence, and at least two connecting members are connected to the same load-bearing member and are arranged at intervals along the first direction.

[0042] By connecting at least two connecting members to the same load-bearing member, the reliability of the installation of the load-bearing member to the box wall is improved, thereby improving the reliability of the installation of the box body on the target equipment. The load-bearing member extends along the first direction, giving the load-bearing member a beam-shaped structure, which facilitates the processing and manufacturing of the load-bearing member and reduces costs.

[0043] In a possible implementation of the present disclosure, the number of load-bearing members is at least two, and at least two load-bearing members are arranged at intervals along the second direction. The second direction has an angle with the axial direction of the first connecting hole and an angle with the first direction. Each load-bearing member is connected to at least two connecting members.

[0044] By providing multiple load-bearing parts, the installation reliability of the box on the target device can be improved.

[0045] In a possible implementation of the present disclosure, the outer surface of the accommodating cavity protrudes along the axial direction of the first connecting hole to form a mounting platform, and the first connecting hole passes through the mounting platform to communicate with the accommodating cavity.

[0046] Along the axial direction of the first connecting hole, the surface of the end wall of the box wall at the end where the first connecting hole is formed, facing away from the interior of the accommodating cavity, is divided into two regions: one region is a portion that is raised along the axial direction of the first connecting hole, i.e., the mounting platform, facing away from the interior of the accommodating cavity; the other region is a non-raised portion, hereinafter referred to as the second region. Forming the mounting platform on the outer surface of the accommodating cavity helps reduce the area of ​​the second region, ensures its flatness, and facilitates its processing and manufacturing.

[0047] In a possible implementation of the present disclosure, the mounting platform is a strip-shaped structure, the length and width directions of the mounting platform are both perpendicular to the axial direction of the first connecting hole, the number of mounting platforms is at least two, at least two mounting platforms are arranged along the width direction, and each mounting platform is correspondingly provided with a first connecting hole.

[0048] At least two mounting platforms divide the outer surface of the accommodating cavity into multiple areas, which can greatly reduce the area of ​​the second area and is conducive to ensuring the flatness of the second area.

[0049] In a second aspect, the present disclosure provides a battery comprising a battery cell and the housing provided in the first aspect of the present disclosure. The number of battery cells is at least two, the at least two battery cells are electrically connected, and both are disposed in the housing.

[0050] The battery provided by the present disclosure, including the housing provided by the first aspect of the present disclosure, can achieve the same effect, namely, can improve the reliability of the housing when installed on the target device.

[0051] In a third aspect, the present disclosure provides an electrical device, which includes an electrical body and the battery provided in the second aspect of the present disclosure, and the battery is used to supply power to the electrical body.

[0052] The electrical equipment provided by the present disclosure, including the battery provided in the second aspect of the present disclosure, can achieve the same effect, that is, it can improve the reliability of the installation of the box on the target equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0054] FIG1 is one of the exploded schematic diagrams of a battery pack in some embodiments of the present disclosure;

[0055] FIG2 is a schematic structural diagram of a load-bearing member installed in an accommodating cavity in some embodiments of the present disclosure;

[0056] FIG3 is a second exploded schematic diagram of a battery pack in some embodiments of the present disclosure;

[0057] FIG4 is a schematic structural diagram of a battery pack from a first perspective in some embodiments of the present disclosure;

[0058] FIG5 is a cross-sectional view taken along line AA in FIG4 ;

[0059] FIG6 is a partial enlarged view of point B in FIG5 ;

[0060] FIG7 is an exploded schematic diagram of a box body in some embodiments of the present disclosure.

[0061] Explanation of the accompanying drawings: 1-box wall; 11-main body; 111-first connecting hole; 112-mounting groove; 1121-bottom wall of the mounting groove; 1122-side wall of the mounting groove; 113-first plane; 114-second surface; 115-mounting platform; 12-box cover; 2-accommodating chamber; 3-load-bearing member; 31-second connecting hole; 32-first sealing portion; 33-first sealing groove; 34-first surface; 4-connecting member; 41-mounting hole; 42-rod; 43-blocking portion; 431-second plane; 432-resting surface; 44-second sealing portion; 5-sealing member; 6-wire screw sleeve; 7-battery module; 8-hook-shaped structure; a-axial direction of the first connecting hole; b-first direction; c-second direction; d-first length; e-second length; f-first area. DETAILED DESCRIPTION

[0062] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this disclosure; the terms "including" and "having" and any variations thereof in this disclosure are intended to cover non-exclusive inclusions.

[0064] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0065] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0066] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0067] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0068] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "abutment" should be understood in a broad sense, and can refer to direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0069] Hereinafter, the present disclosure will be described in detail.

[0070] In related technologies, the box is generally installed on the target device in the following manner: there is an opening on the box wall of the box, and the box has a guide, which corresponds to the opening, so that the guide can transfer the supporting force of the target device to the load-bearing member in the box, thereby realizing the support of the box by the target device.

[0071] However, the guide parts are generally welded together with the openings. The applicant of the present disclosure has found that welding is prone to problems such as weld depression, and the welding strength cannot be effectively guaranteed, which can easily lead to poor installation reliability of the load-bearing parts, the guide parts and the box wall, and thus poor installation reliability of the box on the target equipment.

[0072] The present disclosure provides a box body, which includes a box wall, a load-bearing member, and a connecting member. The box wall is enclosed to form a storage cavity, and is provided with a first connecting hole, which penetrates the box wall in the thickness direction of the box wall; the load-bearing member is arranged in the storage cavity; the connecting member extends into the storage cavity through the first connecting hole, so as to be detachably connected to the load-bearing member, so as to fix the box wall and the load-bearing member; the side of the connecting member facing outside the storage cavity is provided with a connecting structure, which is used to connect a target device. In the box body provided by the present disclosure, the connecting member is detachably connected to the load-bearing member and the box wall through the first connecting hole, so as to connect and fix the box wall and the load-bearing member together. The connecting member and the first connecting hole do not need to be connected together by welding, which can improve the reliability of the connection. Therefore, the box body provided by the present disclosure can improve the installation reliability of the box wall, the connecting member, and the load-bearing member, thereby improving the reliability of the installation of the box body on the target device.

[0073] The housing in the embodiments of the present disclosure can serve as a battery pack housing or a battery module housing, etc. In cases where the housing serves as a battery pack housing, the housing cavity can accommodate multiple battery modules, which are electrically connected. Of course, in some embodiments of the present disclosure, the battery pack can also be a module-less battery pack, excluding battery modules, with the battery cells directly housed within the housing cavity.

[0074] In the embodiment of the present disclosure, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be recharged to activate active materials after discharge and continue to be used.

[0075] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present disclosure.

[0076] An embodiment of the present disclosure provides a battery, comprising a battery cell and a housing. The battery cells are at least two, and the at least two battery cells are electrically connected and disposed within the housing.

[0077] In some embodiments, at least two battery cells are electrically connected, and the electrical connection between the at least two battery cells can be in series, in parallel, or in mixed connection through a busbar component.

[0078] In some embodiments, the battery may be a battery module or a battery pack.

[0079] An embodiment of the present disclosure further provides an energy storage battery device, which includes a plurality of battery packs, wherein the plurality of battery packs are electrically connected.

[0080] The present disclosure provides an electrical device, comprising an electrical device and a battery, the battery being used to supply power to the electrical device. In embodiments of the present disclosure, the electrical device may refer to a vehicle, a ship, an aircraft, or other electrical device. The vehicle may be of various types, exemplarily including a sedan, an off-road vehicle, a sport utility vehicle (SUV), a bus, a truck, a pickup truck, or a motorhome.

[0081] The following is a description with reference to the accompanying drawings.

[0082] Please refer to Figure 1, which is one of the exploded schematic diagrams of a battery pack in some embodiments of the present disclosure. The present disclosure provides a battery pack comprising at least two battery modules 7 and a housing. The at least two battery modules 7 are electrically connected and disposed within the housing.

[0083] Please refer to Figures 2, 3 and 4. Figure 2 is a schematic structural diagram of the load-bearing member installed in the accommodating cavity in some embodiments of the present disclosure; Figure 3 is a second schematic exploded diagram of the battery pack in some embodiments of the present disclosure; and Figure 4 is a schematic structural diagram of the battery pack from a first perspective in some embodiments of the present disclosure. The box body of the embodiment of the present disclosure includes a box wall 1, a load-bearing member 3 and a connecting member 4. The box wall 1 encloses a accommodating cavity 2 and is provided with a first connecting hole 111, which passes through the box wall 1 in the thickness direction of the box wall 1; the load-bearing member 3 is arranged in the accommodating cavity 2; the connecting member 4 extends into the accommodating cavity 2 through the first connecting hole 111, so as to be detachably connected to the load-bearing member 3, so as to fix the box wall 1 and the load-bearing member 3; the connecting member 4 is provided with a connecting structure on the side facing outside the accommodating cavity 2, and the connecting structure is used to connect the target device.

[0084] The first connection hole 111 in the embodiment of the present disclosure is a through hole, and the axial direction a of the first connection hole is different from the extension direction of the box wall 1 so as to penetrate the box wall 1 in the thickness direction of the box wall 1 .

[0085] The load-bearing member 3 in the embodiment of the present disclosure is capable of bearing the gravity of the box body and the gravity of the components such as battery cells in the accommodating chamber 2. The above gravity can be transferred to the connecting member 4 through the load-bearing member 3, and the connecting member 4 is connected to the target device through a connecting structure, so that the above gravity can be transferred to the target device through the connecting member 4. The area surrounded by the dotted line in Figure 4, that is, the first area f, is the area of ​​the box wall 1 corresponding to the load-bearing member 3 in the axial direction a of the first connecting hole. In some embodiments of the present disclosure, the electrical equipment is a vehicle, and the target device can be a vehicle body or frame, etc.

[0086] The side of the connector 4 facing outside the accommodating cavity 2 in the embodiment of the present disclosure refers to the side of the connector 4 facing outside the accommodating cavity 2 through the first connecting hole 111 , that is, the side of the connecting structure exposed outside the accommodating cavity 2 through the first connecting hole 111 .

[0087] In the embodiment of the present disclosure, the connecting member 4 and the box wall 1 are of a separate structure and are passed through the first connecting through hole to extend into the accommodating cavity 2 through the first connecting hole 111 .

[0088] The detachable connection between the connecting member 4 and the load-bearing member 3 in the embodiment of the present disclosure can be implemented in various forms, for example, it can be a snap connection or a threaded connection.

[0089] The connecting member 4 is detachably connected to the load-bearing member 3 and the box wall 1 through the first connecting hole 111, thereby connecting and fixing the box wall 1 and the load-bearing member 3 together. The connecting member 4 and the first connecting hole 111 do not need to be connected by welding, which can improve the reliability of the connection. Therefore, the box body provided by the present disclosure can improve the installation reliability of the box wall 1, the connecting member 4 and the load-bearing member 3, thereby improving the reliability of the installation of the box body on the target equipment.

[0090] Moreover, the connecting member 4 is detachably connected to the load-bearing member 3 and the box wall 1 through the first connecting hole 111, which has lower costs and is more convenient to assemble than welding.

[0091] In some embodiments of the present disclosure, referring to Figures 2, 3, and 4, the box body includes a main body 11 and a box cover 12. The main body 11 includes an integral cylindrical body and a wall body. The wall body is coupled to one end of the cylindrical body to close the end of the cylindrical body. The box cover 12 is detachably coupled to the other end of the cylindrical body to form a receiving chamber 2 together with the cylindrical body and the wall body. A first connecting hole 111 is formed in the wall body, penetrating the wall body in the axial direction of the cylindrical body, that is, penetrating the wall body in the thickness direction of the wall body, and communicating with the internal space of the cylindrical body.

[0092] In some embodiments of the present disclosure, please refer to Figures 5, 6, and 7. Figure 5 is a cross-sectional view taken along line AA in Figure 4; Figure 6 is a partially enlarged view taken along line B in Figure 5; and Figure 7 is an exploded schematic diagram of the housing in some embodiments of the present disclosure. A second connecting hole 31 is defined in the load-bearing member 3. The second connecting hole 31 corresponds to the first connecting hole 111 along the axial direction. The connecting member 4 extends through the second connecting hole 31 at one end proximal to the first connecting hole 111 and into the second connecting hole 31, where it is threadedly engaged with the second connecting hole 31 for a removable connection to the load-bearing member 3.

[0093] In the embodiment of the present disclosure, the second connection hole 31 and the first connection hole 111 are correspondingly arranged along the axial direction, that is, the axial direction a of the first connection hole is the same or approximately the same as the axial direction of the second connection hole 31 .

[0094] The connecting member 4 in the embodiment of the present disclosure is threadedly matched with the second connecting hole 31, that is, the connecting member 4 has an external thread, and the second connecting hole 31 has an internal thread. The axial direction of the external thread and the axial direction of the internal thread are both the same as the axial direction of the second connecting hole 31, and the external thread is threadedly matched with the internal thread.

[0095] By threading the connector 4 into the second connection hole 31, a detachable connection between the connector 4 and the load-bearing member 3 is achieved, which facilitates installation and manufacturing. During installation, the first connection hole 111 and the second connection hole 31 can be aligned. Then, the connector 4 is inserted into the first connection hole 111 from the end of the first connection hole 111 near the outside of the accommodating cavity 2, and then passes through the first connection hole 111 to extend into the second connection hole 31, thereby threading the second connection hole 31.

[0096] Of course, in some embodiments of the present disclosure, referring to FIG. 5 , FIG. 6 and FIG. 7 , the connecting member 4 may also be threadedly engaged with the first connecting hole 111 , so that the connecting member 4 fixes the load-bearing member 3 to the box wall 1 .

[0097] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. The load-bearing member 3 has a first sealing portion 32, which is combined with the second connecting hole 31 to close the second connecting hole 31. The connecting member 4 extends to the side of the first sealing portion 32 close to the first connecting hole 111 to engage with the second connecting hole 31 through a thread.

[0098] In the embodiment of the present disclosure, the first sealing portion 32 closes the second connection hole 31 , so that the second connection hole 31 is a blind hole facing the first connection hole 111 .

[0099] The connecting member 4 in the embodiment of the present disclosure extends to the side of the first sealing portion 32 close to the first connecting hole 111, that is, the connecting member 4 extends into the second connecting hole 31 from one end of the second connecting hole 31 close to the first connecting hole 111, and continues to extend along the axial direction of the second connecting hole 31 toward the other end of the second connecting hole 31, but does not penetrate the first sealing portion 32 in the axial direction of the second connecting hole 31.

[0100] By making the first sealing portion 32 seal the second connection hole 31 , impurities entering the second connection hole 31 are not easily allowed to leave the second connection hole 31 from the end of the second connection hole 31 away from the first connection hole 111 , which is beneficial to improving the sealing effect of the box.

[0101] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the first sealing portion 32 may be integrally formed with the inner wall of the second connection hole 31. This facilitates manufacturing and improves sealing performance.

[0102] Of course, in some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. The second connecting hole 31 can also be a through hole. During the installation of the connecting member 4, the first connecting hole 111 can be aligned with the second connecting hole 31 first, and then the connecting member 4 can be extended into the second connecting hole 31 from the end of the second connecting hole 31 away from the first connecting hole 111, and pass through the second connecting hole 31 to extend into the first connecting hole 111, so as to cooperate with the first connecting hole 111 threadedly to achieve the fixation of the load-bearing member 3 and the box wall 1.

[0103] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7, the box body also includes a first sealing adhesive layer, through which at least one of the circumferential inner walls of the first connecting hole 111 and the circumferential inner walls of the second connecting hole 31 are bonded to the corresponding parts of the connecting member 4.

[0104] In the disclosed embodiment, the circumferential inner wall of the first connection hole 111 is bonded to a corresponding portion of the connection member 4. This corresponding portion refers to the portion of the connection member 4 that faces the circumferential inner wall of the first connection hole 111 in the radial direction of the first connection hole 111. Similarly, the circumferential inner wall of the second connection hole 31 is bonded to a corresponding portion of the connection member 4. This corresponding portion refers to the portion of the connection member 4 that faces the circumferential inner wall of the second connection hole 31 in the radial direction of the second connection hole 31.

[0105] Providing the first sealing adhesive layer is beneficial to improving the sealing effect of the box.

[0106] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7, the second connecting hole 31 is threadedly matched with the connecting member 4, the circumferential inner wall of the second connecting hole 31 is bonded to the corresponding part of the connecting member 4, and the first sealing adhesive layer may include a thread glue layer.

[0107] In some embodiments of the present disclosure, referring to FIG. 5 , FIG. 6 and FIG. 7 , the circumferential inner wall of the first connection hole 111 is bonded to the corresponding portion of the connector 4 , and the first sealing adhesive layer may include a structural adhesive layer.

[0108] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the load-bearing member 3 is welded to the box wall 1. This provides a highly reliable connection between the load-bearing member 3 and the box wall 1. The connection member 4 can be inserted through the first connection hole 111 and the second connection hole 31 to secure the load-bearing member 3 to the box wall 1, accurately positioning the load-bearing member 3 relative to the box wall 1. The load-bearing member 3 and the box wall 1 can then be welded together, resulting in a more convenient and precise process.

[0109] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. The connecting member 4 includes a rod portion 42 and a stop portion 43 fixedly connected to one end of the rod portion 42; the other end of the rod portion 42 extends into the accommodating cavity 2 through the first connecting hole 111 to be detachably connected to the load-bearing member 3; the stop portion 43 abuts against the end surface of the first connecting hole 111 away from the accommodating cavity 2, so that in the axial direction a of the first connecting hole, the load-bearing member 3 applies a force to the box wall 1 close to the first connecting hole 111, so that the box wall 1 and the load-bearing member 3 are fixed.

[0110] In the embodiment of the present disclosure, one end and the other end of the rod portion 42 refer to the two ends of the rod portion 42 in its own axial direction. It can be understood that the axial direction of the rod portion 42 is the same or approximately the same as the axial direction a of the first connecting hole.

[0111] In the embodiment of the present disclosure, the first connecting hole 111 is away from the end face inside the accommodating cavity 2, that is, the first connecting hole 111 is close to the end face outside the accommodating cavity 2 along its own axial direction; the first connecting hole 111 is close to the end face inside the accommodating cavity 2, that is, the first connecting hole 111 is close to the end face inside the accommodating cavity 2 along its own axial direction.

[0112] In the embodiment of the present disclosure, the blocking portion 43 abuts against the end face of the first connecting hole 111 away from the accommodating chamber 2, and the blocking portion 43 applies a abutting force close to the accommodating chamber 2 to the end face of the first connecting hole 111 away from the accommodating chamber 2. The direction of the abutting force is parallel or approximately parallel to the axial direction a of the first connecting hole, and is directed from the side of the second connecting hole 31 away from the accommodating chamber 2 to the side close to the accommodating chamber 2. The abutting force will be transmitted to the load-bearing component 3 through the box wall 1, that is, on the axial direction a of the first connecting hole, the load-bearing component 3 applies a force close to the first connecting hole 111 to the box wall 1.

[0113] By fixing one end of the connecting member 4 to the load-bearing member 3 and the other end to the box wall 1, the fixation between the box wall 1 and the load-bearing member 3 is achieved, which is conducive to higher reliability of installation between the load-bearing member 3 and the box wall 1, and is more convenient for installation and processing.

[0114] In some embodiments of the present disclosure, referring to FIG. 5 , FIG. 6 and FIG. 7 , the stopper 43 is a flange formed by the rod 42 extending radially outward, and the stopper 43 abuts against the end surface of the first connecting hole 111 away from the accommodating cavity 2 along the axial direction.

[0115] In the embodiment of the present disclosure, the blocking portion 43 abuts against the end face of the first connecting hole 111 away from the accommodating cavity 2 along the axial direction. The surface against which the blocking portion 43 abuts refers to the abutting surface 432 in the figure, which is the end face of one end of the blocking portion 43 along the axial direction of the rod portion 42.

[0116] By using the flange as the stopper 43 , the reliability of the stopper 43 abutting against the end surface of the first connection hole 111 away from the accommodating cavity 2 is improved, and processing, manufacturing and installation are facilitated.

[0117] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the portion of the rod 42 located near the abutting surface 432 within the accommodating cavity 2 is the first portion. Along the axial direction of the rod 42, the length ratio of the stop 43 to the first portion is 1:7 to 11. For example, the ratio may be 1:7, 1:8, 1:9, or 1:10.

[0118] The axial length of the first portion along the rod 42 in the embodiment of the present disclosure can be referred to the first length d in the figure, and the axial length of the blocking portion 43 along the rod 42 can be referred to the second length e. Both the first length d and the second length e can be measured by a vernier caliper.

[0119] By making the length ratio of the blocking portion 43 to the first portion 1:7-11, the rigidity and strength of the connecting member 4 are both higher, and the material loss is lower, which is conducive to improving the installation stability of the connecting member 4.

[0120] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the length of the stopper 43 along the axial direction of the rod 42 is 2.5 to 3 mm. For example, it can be 2.5 mm, 2.8 mm, or 3 mm. This helps to improve the installation stability of the connector 4.

[0121] In some embodiments of the present disclosure, referring to FIG. 5 , FIG. 6 and FIG. 7 , the circumferential profile of the blocking portion 43 is larger than the circumferential profile of the first connecting hole 111 .

[0122] In the embodiment of the present disclosure, the circumferential contour of the blocking portion 43 is larger than the circumferential contour of the first connecting hole 111, which means that in the axial direction a of the first connecting hole, the blocking portion 43 blocks the opening of the first connecting hole 111 at only one end outside the accommodating cavity 2.

[0123] By making the circumferential profile of the stopper 43 larger than the circumferential profile of the first connection hole 111 , the reliability of the abutment is improved, and the stopper 43 is also conducive to producing a better sealing effect on the first connection hole 111 .

[0124] In some embodiments of the present disclosure, referring to FIG. 5 , FIG. 6 and FIG. 7 , the box body further includes a second sealing adhesive layer, through which the surface of the blocking portion 43 abutting against the box wall 1 is bonded to the corresponding portion of the box wall 1 .

[0125] In the embodiment of the present disclosure, the surface of the blocking portion 43 abutting against the box wall 1 is bonded to the corresponding portion of the box wall 1 , and the corresponding portion of the box wall 1 refers to the portion of the box wall 1 abutting against the abutting surface 432 .

[0126] Providing the second sealing adhesive layer is beneficial for improving the sealing effect of the blocking portion 43 on the first connecting hole 111 .

[0127] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, a portion of the box wall 1 corresponding to the abutment surface 432 and at least one of the abutment surfaces 432 are formed with a glue groove, which can be filled with structural glue to form a second sealing adhesive layer. This helps to improve the sealing effect of the stopper 43 on the first connection hole 111.

[0128] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. The outer surface of the accommodating cavity 2 is concave to form a mounting groove 112 in the direction close to the inside of the accommodating cavity 2, and the first connecting hole 111 is opened on the bottom wall 1121 of the mounting groove; the blocking portion 43 cooperates with the mounting groove 112 to abut against the bottom wall 1121 of the mounting groove, so as to abut against the end surface of the first connecting hole 111 away from the inside of the accommodating cavity 2.

[0129] In the embodiment of the present disclosure, the first connecting hole 111 penetrates the bottom wall 1121 of the mounting groove in the depth direction of the mounting groove 112, so that the first connecting hole 111 connects the inside and outside of the accommodating cavity 2, and the connecting member 4 penetrates the bottom wall 1121 of the mounting groove through the first connecting hole 111 to be connected to the load-bearing member 3.

[0130] In the disclosed embodiment, the bottom wall 1121 and side walls of the mounting groove have the same meanings as those generally understood by those skilled in the art of the disclosed embodiment. The side wall 1122 of the mounting groove refers to the wall extending along the depth direction of the mounting groove 112, and the end wall of the mounting groove 112 refers to the end wall of one end of the mounting groove 112 in the depth direction.

[0131] By matching the stopper 43 with the installation groove 112 , the sealing effect of the stopper 43 on the first connection hole 111 is improved, and the flatness of the outer surface of the box is improved, which facilitates the installation between the box and the target device.

[0132] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. Along the depth direction of the mounting groove 112, the end surface of the mounting groove 112 away from the bottom wall 1121 of the mounting groove is a first plane 113, and the end surface of the blocking portion 43 away from the bottom wall 1121 of the mounting groove is a second plane 431. The second plane 431 is located in the mounting groove 112 and is coplanar with the first plane 113.

[0133] By making the first plane 113 and the second plane 431 coplanar, the flatness of the outer surface of the box is improved, which facilitates the installation between the box and the target device.

[0134] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. Along the axial direction a of the first connecting hole, a sealing member 5 is supported between the load-bearing member 3 and the end surface of the first connecting hole 111 close to the accommodating cavity 2, and the sealing member 5 extends along the circumference of the first connecting hole 111.

[0135] In the disclosed embodiment, the end surface of the load-bearing member 3 near the first connection hole 111 is referred to as the first surface 34, and the end surface of the first connection hole 111 near the interior of the accommodating cavity 2 is referred to as the second surface 114. Along the axial direction a of the first connection hole, the first surface 34 and the second surface 114 are disposed opposite each other. Along the axial direction a of the first connection hole, the sealing member 5 is located between the first surface 34 and the second surface 114 and supported therebetween, exerting a force on the first and second surfaces 34, 114 that causes them to move away from each other along the axial direction a of the first connection hole.

[0136] The provision of the sealing member 5 is beneficial for improving the sealing effect between the load-bearing member 3 and the box wall 1 .

[0137] In some embodiments of the present disclosure, referring to Figures 5, 6 and 7, the sealing member 5 extends along the circumference of the first connecting hole 111 to form a closed ring, which is conducive to improving the sealing effect between the load-bearing member 3 and the box wall 1.

[0138] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the sealing member 5 may be a sealing rubber ring. By using the sealing rubber ring as the sealing ring, the cost is low and the sealing effect is better.

[0139] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. Along the axial direction a of the first connecting hole, a first sealing groove 33 is formed on the end face of the load-bearing member 3 near the first connecting hole 111, and the sealing member 5 includes a first sealing member, which is arranged in the first sealing groove 33; and / or, a second sealing groove is formed on the end face of the first connecting hole 111 near the accommodating cavity 2, and the sealing member 5 includes a second sealing member, which is arranged in the second sealing groove.

[0140] In the disclosed embodiment, the first surface 34 is recessed inwardly away from the second surface 114 to form a first sealing groove 33, and the first sealing member is supported between the bottom wall of the first sealing groove 33 and the second surface 114. The second surface 114 is recessed inwardly away from the first surface 34 to form a second sealing groove, and the second sealing member is supported between the bottom wall of the second sealing groove and the first surface 34.

[0141] The first seal and the second seal in the embodiment of the present disclosure may also refer to the same one, that is, along the axial direction a of the first connecting hole, one end of the seal 5 is located in the first sealing groove 33, and the other end is located in the second sealing groove, and the bottom wall of the first sealing groove 33 and the bottom wall of the second sealing groove are arranged opposite to each other along the axial direction a of the first connecting hole, and the seal 5 is supported between the bottom wall of the first sealing groove 33 and the bottom wall of the second sealing groove along the axial direction a of the first connecting hole.

[0142] By arranging the sealing member 5 in the sealing groove, the stability of the installation of the sealing member 5 is improved, thereby improving the sealing effect.

[0143] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. The connection structure is a mounting hole 41 opened on the connector 4. The mounting hole 41 is axially corresponding to the first connecting hole 111. The end of the mounting hole 41 facing away from the accommodating cavity 2 is used for the target device to extend therein so that the mounting hole 41 is connected to the target device.

[0144] In the disclosed embodiment, the mounting hole 41 is axially aligned with the first connecting hole 111, i.e., the axial direction of the mounting hole 41 is approximately the same as or identical to the axial direction a of the first connecting hole. The mounting hole 41 is formed on the portion of the connector 4 facing outside the accommodating cavity 2, i.e., on the portion of the connector 4 exposed to the outside of the accommodating cavity 2 through the first connecting hole 111.

[0145] The box is mounted on the target device through the mounting holes 41 corresponding to the first connection holes 111 , which is conducive to improving the installation reliability of the box on the target device.

[0146] In some embodiments of the present disclosure, referring to FIG. 5 , FIG. 6 and FIG. 7 , the target device includes a target device body and a locking accessory, which is passed through the target device body and the mounting hole 41 to fix the box to the target device body.

[0147] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the locking attachment is threadedly engaged with the mounting hole 41. This helps to improve the reliability of the box body being mounted on the external device.

[0148] In some embodiments of the present disclosure, referring to Figures 5, 6 and 7, a wire screw sleeve 6 is provided in the mounting hole 41. This helps to improve the reliability of the installation of the box on the external equipment.

[0149] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7, at least a portion of the mounting hole 41 is located in the first connecting hole 111, and the connecting member 4 has a second sealing portion 44, which is combined with the mounting hole 41 to close the end of the mounting hole 41 away from the outside of the accommodating cavity 2.

[0150] The second sealing portion 44 in the disclosed embodiment closes the mounting hole 41 , so that the mounting hole 41 is a blind hole structure facing outside the accommodating cavity 2 . The mounting hole 41 faces outside the accommodating cavity 2 , that is, the mounting hole 41 is exposed outside the accommodating cavity 2 through the first connecting hole 111 .

[0151] The locking accessory in the embodiment of the present disclosure extends to the side of the second sealing portion 44 away from the accommodating cavity 2, that is, the locking accessory extends into the mounting hole 41 along the axial direction of the mounting hole 41 from one end of the mounting hole 41 away from the accommodating cavity 2, and continues to extend along the axial direction of the mounting hole 41 toward the other end of the mounting hole 41, but does not penetrate the second sealing portion 44 in the axial direction of the mounting hole 41.

[0152] The second sealing portion 44 closes the mounting hole 41 , thereby improving the sealing effect of the box.

[0153] In some embodiments of the present disclosure, referring to Figures 5, 6, and 7, the second sealing portion 44 may be integrally formed with the inner wall of the mounting hole 41. This facilitates manufacturing and improves the sealing effect.

[0154] In some embodiments of the present disclosure, please refer to Figures 5, 6 and 7. The load-bearing member 3 has a supporting portion, which is higher than the lower side wall of the accommodating cavity 2 in the vertical direction. The upper side of the supporting portion can support the battery module 7 so that there is a gap between the battery module 7 and the lower side wall of the accommodating cavity 2 in the vertical direction.

[0155] In the embodiment of the present disclosure, the lower side wall of the accommodating cavity 2 is the lower end wall of the accommodating cavity 2 .

[0156] By making the load-bearing member 3 support the battery module 7, the load-bearing member 3 is fully utilized, which is beneficial to improving the structural compactness of the battery.

[0157] In some embodiments of the present disclosure, referring to FIG. 4 , FIG. 6 and FIG. 7 , on the basis of the load-bearing member 3 supporting the battery module 7 , the first connection hole 111 is opened on the lower side wall of the accommodating cavity 2 .

[0158] In the disclosed embodiment, the load-bearing member 3 supports the battery module 7 , and the load-bearing member 3 needs to be fixed on the lower side wall of the accommodating cavity 2 .

[0159] In the embodiment of the present disclosure, the first connection hole 111 is opened on the lower side wall of the accommodating cavity 2 , and the first connection hole 111 passes through the lower side wall of the accommodating cavity 2 in the vertical direction.

[0160] By opening the first connection hole 111 on the lower side wall of the accommodating cavity 2 , the first connection hole 111 is closer to the load-bearing member 3 , which is beneficial to improving the compactness of the battery structure.

[0161] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the first connection hole 111 extends vertically, which facilitates manufacturing and assembly and disassembly of the connector 4, as well as connection between the connection structure and the target device.

[0162] In some embodiments of the present disclosure, referring to FIG. 4 , FIG. 6 and FIG. 7 , the first connection hole 111 may also be provided on the upper side wall of the accommodating cavity 2 , or on the side wall extending along the vertical direction of the accommodating cavity 2 .

[0163] In some embodiments of the present disclosure, please refer to Figures 4, 6 and 7, the load-bearing member 3 extends along the first direction b, and the first direction b has an angle with the axial direction a of the first connecting hole; the number of first connecting holes 111 and connecting members 4 are at least two, and are arranged one to one, and at least two connecting members 4 are connected to the same load-bearing member 3, and are arranged at intervals along the first direction b.

[0164] By connecting at least two connecting members 4 to the same load-bearing member 3, the reliability of the installation of the load-bearing member 3 and the box wall 1 is improved, thereby improving the reliability of the installation of the box body on the target equipment. The load-bearing member 3 extends along the first direction b, giving the load-bearing member 3 a beam-shaped structure, which facilitates the processing and manufacturing of the load-bearing member 3 and reduces costs.

[0165] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the axial direction a of at least two first connecting holes corresponding to the same load-bearing member 3 is the same. This structural form is conducive to improving the stress of the load-bearing member 3, thereby making the installation of the load-bearing member 3 and the box wall 1 more stable and facilitating the installation of the connecting member 4, the load-bearing member 3, and the box wall 1.

[0166] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the first direction b is perpendicular to the axial direction a of the first connecting hole, which is conducive to improving the convenience and stability of installation.

[0167] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, three connecting members 4 are provided for each load-bearing member 3. This not only allows the load-bearing member 3 to better meet the rigidity and strength requirements of the installation, but also helps reduce costs.

[0168] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the first direction b is perpendicular to the vertical direction, and the first connection hole 111 is formed on the lower sidewall of the accommodating chamber 2. The box body also includes a hook-shaped structure 8, to which the load-bearing members 3 are fixedly connected along the first direction b. The hook-shaped structure 8 faces downward to hook onto the box wall 1, thereby securing the load-bearing members 3 to the box wall 1. This helps improve the reliability of the mounting of the load-bearing members 3 to the box wall 1.

[0169] In some embodiments of the present disclosure, please refer to Figures 4, 6 and 7, the number of load-bearing members 3 is at least two, and at least two load-bearing members 3 are arranged at intervals along the second direction c, the second direction c has an angle with the axial direction a of the first connecting hole, and has an angle with the first direction b, and each load-bearing member 3 is connected to at least two connecting members 4.

[0170] By providing a plurality of load-bearing members 3 , the installation reliability of the box on the target device can be improved.

[0171] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the first direction b and the axial direction a of the first connecting hole are both perpendicular to the second direction c. This helps to improve the convenience and stability of installation.

[0172] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, there are two load-bearing members 3, which are respectively disposed at the two ends of the box wall 1 in the second direction C. This not only allows the load-bearing members 3 to better meet the load-bearing requirements, but also helps reduce costs.

[0173] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, a connecting member 4 connected to one load-bearing member 3 is referred to as a first connecting member 4, and a connecting member 4 corresponding to another load-bearing member 3 is referred to as a second connecting member 4. Along the second direction c, at least two first connecting members 4 are provided in a one-to-one correspondence with at least two second connecting members 4. This facilitates improved installation convenience and stability.

[0174] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the corresponding first connectors 4 and second connectors 4 are flush with each other in the first direction b. This helps to improve the convenience and stability of installation.

[0175] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the outer surface of the accommodating chamber 2 is raised along the axial direction a of the first connecting hole, and a mounting platform 115 is formed thereon. The first connecting hole 111 passes through the mounting platform 115 to communicate with the accommodating chamber 2. In this way, along the axial direction a of the first connecting hole, the surface of the end wall of the box wall 1 at one end where the first connecting hole 111 is formed away from the inside of the accommodating chamber 2 is divided into two areas. One area is the portion raised along the axial direction a of the first connecting hole, i.e., the mounting platform 115 is away from the surface of the inside of the accommodating chamber 2. The other area is the non-raised portion, hereinafter referred to as the second area. The formation of the mounting platform 115 on the outer surface of the accommodating chamber 2 is beneficial for reducing the area of ​​the second area, ensuring the flatness of the second area, and facilitating the processing and manufacturing of the second area.

[0176] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, mounting platforms 115 are strip-shaped, with both their length and width directions being perpendicular to the axial direction a of the first connection hole. There are at least two mounting platforms 115, arranged along the width direction, and each mounting platform 115 correspondingly provided with a first connection hole 111. Thus, at least two mounting platforms 115 divide the outer surface of the accommodating chamber 2 into multiple regions, significantly reducing the area of ​​the second region and facilitating the flatness of the second region.

[0177] In the embodiment of the present disclosure, the length direction and the width direction of the mounting platform 115 are perpendicular to each other.

[0178] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, the length direction of the mounting platform 115 is perpendicular to the first direction b. This helps to improve the strength and rigidity of the box.

[0179] In some embodiments of the present disclosure, referring to Figures 4, 6 and 7, the mounting platform 115 passes through the box wall 1 in the length direction, which is beneficial to improving the strength and rigidity of the box.

[0180] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, along the axial direction a of the corresponding first connecting hole, the end face of the mounting platform 115, which is away from the accommodating cavity 2, is recessed inward toward the accommodating cavity 2, forming a mounting groove 112. This facilitates the processing and manufacturing of the mounting groove 112 and improves the reliability of the fit between the connector 4 and the mounting groove 112.

[0181] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, at least two first connection holes 111 are provided through a single mounting platform 115 to communicate with the accommodating cavity 2. A first connector 4 and a second connector 4 are provided in each of the at least two first connection holes 111. Thus, the first and second connectors 4 can be mounted on the same mounting platform 115, facilitating fabrication and improving mounting strength and rigidity.

[0182] In some embodiments of the present disclosure, referring to Figures 4, 6, and 7, a first connection hole 111 is defined on the lower sidewall of the accommodating chamber 2, with the axis thereof being vertical. The load-bearing member 3 extends along a first direction b, which is perpendicular to the vertical direction. There are two load-bearing members 3, one located at each end of the accommodating chamber 2 along a second direction c, which is perpendicular to both the vertical direction and the first direction b. The load-bearing member 3 has a support portion that is vertically elevated above the lower sidewall of the accommodating chamber 2. The upper side of the support portion is used to support the battery module 7, ensuring a vertical gap between the battery module 7 and the lower sidewall of the accommodating chamber 2. Three second connection holes 31 are defined on the lower sidewall of each load-bearing member 3. The three second connection holes 31 are arranged along the first direction b. Two of the three second connection holes 31 are located at the ends of the accommodating chamber 2 in the first direction b, and the other is located in the middle of the accommodating chamber 2 in the first direction b. The second connection holes 31 are blind holes. A first connection hole 111 is formed in the box wall 1 corresponding to each second connection hole 31 . The first connection hole 111 is coaxial with the corresponding second connection hole 31 .

[0183] The connector 4 includes a rod 42 and a flange extending radially outward from the rod 42. The flange is fixedly connected to one end of the rod 42. The other end of the rod 42 extends through the first connecting hole 111 into the accommodating chamber 2 and extends through the second connecting hole 31, proximal to the first connecting hole 111, into the second connecting hole 31 for threaded engagement with the second connecting hole 31. The circumferential inner walls of the first connecting hole 111 and the circumferential inner walls of the second connecting hole 31 are bonded to corresponding portions of the rod 42. The flange axially abuts against the end surface of the first connecting hole 111 facing away from the accommodating chamber 2, so that in the axial direction a of the first connecting hole, the load-bearing member 3 applies a force toward the box wall 1, thereby securing the box wall 1 to the load-bearing member 3. The circumferential profile of the flange is larger than that of the first connecting hole 111. The surface of the flange abutting against the box wall 1 is bonded to the corresponding portion of the box wall 1. Along the axial direction a of the first connecting hole, a first sealing groove 33 is formed on the end face of the load-bearing member 3 close to the first connecting hole 111, and the sealing member 5 is arranged in the first sealing groove 33; supported between the load-bearing member 3 and the end face of the first connecting hole 111 close to the accommodating cavity 2, the sealing member 5 extends along the circumference of the first connecting hole 111.

[0184] The connection structure is a mounting hole 41 formed on the connector 4. Mounting hole 41 is axially aligned with first connecting hole 111. The end of mounting hole 41 facing away from the accommodating cavity 2 does not penetrate the connector 4. A wire screw insert 6 is disposed within mounting hole 41. The end of mounting hole 41 facing away from the accommodating cavity 2 is intended for the target device to extend into, thereby connecting mounting hole 41 to the target device.

[0185] During the assembly process, the seal 5 can be installed in the first sealing groove 33 first, and the wire screw sleeve 6 can be installed in the mounting hole 41. After the first connecting hole 111 and the second connecting hole 31 are aligned, the connecting member 4 is passed through the first connecting hole 111 and extended into the second connecting hole 31, threadedly engaged with the second connecting hole 31, and the flange is placed against the end face of the first connecting hole 111 away from the accommodating chamber 2, so that the box wall 1 and the load-bearing member 3 are fixed together.

[0186] The above embodiments are intended only to illustrate the technical solutions of the present disclosure, and are not intended to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions and are intended to be included within the scope of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts.

Claims

1. A box, comprising: The box wall is enclosed to form a receiving cavity and is provided with a first connecting hole, wherein the first connecting hole penetrates the box wall in the thickness direction of the box wall; A load-bearing member, disposed in the accommodating cavity; A connecting member extends into the accommodating cavity through the first connecting hole so as to be detachably connected to the load-bearing member to fix the box wall to the load-bearing member; a connecting structure is provided on the side of the connecting member facing outside the accommodating cavity, and the connecting structure is used to connect to the target device.

2. The box according to claim 1, wherein: A second connecting hole is provided on the load-bearing member, and the second connecting hole and the first connecting hole are axially correspondingly arranged. The connecting member extends into the second connecting hole through one end of the second connecting hole close to the first connecting hole to cooperate with the second connecting hole threadably so as to be detachably connected to the load-bearing member.

3. The box according to claim 2, wherein: The load-bearing member has a first sealing portion, which is combined with the second connecting hole to close the second connecting hole. The connecting member extends to a side of the first sealing portion close to the first connecting hole to be threadedly matched with the second connecting hole.

4. The box according to claim 2 or 3, wherein: The box body further includes a first sealing adhesive layer, through which at least one of the circumferential inner wall of the first connecting hole and the circumferential inner wall of the second connecting hole is bonded to a corresponding portion of the connecting member.

5. The box according to any one of claims 1 to 4, wherein: The connecting member includes a rod portion and a blocking portion fixedly connected to one end of the rod portion; the other end of the rod portion extends into the accommodating cavity through the first connecting hole so as to be detachably connected to the load-bearing member; the blocking portion abuts against an end surface of the first connecting hole away from the accommodating cavity, so that in the axial direction of the first connecting hole, the load-bearing member applies a force to the box wall close to the first connecting hole, so that the box wall and the load-bearing member are fixed.

6. The box according to claim 5, wherein: The stopper is a flange formed by the rod portion extending radially outward, and the stopper abuts against an end surface of the first connecting hole away from the accommodating cavity along the axial direction.

7. The box according to claim 6, wherein: The circumferential contour of the blocking portion is larger than the circumferential contour of the first connecting hole.

8. The box according to claim 7, wherein: The box body further comprises a second sealing adhesive layer, through which the surface of the blocking portion abutting against the box wall is bonded to a corresponding portion of the box wall.

9. The housing according to any one of claims 5 to 8, wherein: The outer surface of the accommodating cavity is concave to form an installation groove in the direction close to the inside of the accommodating cavity, and the first connecting hole is opened on the bottom wall of the installation groove; the blocking portion cooperates with the installation groove to abut against the bottom wall of the installation groove, so as to abut against the end surface of the first connecting hole away from the inside of the accommodating cavity.

10. The housing according to claim 9, wherein: Along the depth direction of the mounting groove, the end surface of one end of the mounting groove away from the bottom wall of the mounting groove is a first plane, and the end surface of one end of the blocking portion away from the bottom wall of the mounting groove is a second plane. The second plane is located in the mounting groove and is coplanar with the first plane.

11. The housing according to any one of claims 1 to 10, wherein: Along the axial direction of the first connecting hole, a sealing member is supported between the load-bearing member and the end surface of the first connecting hole close to the accommodating cavity, and the sealing member extends along the circumferential direction of the first connecting hole.

12. The housing according to claim 11, wherein: Along the axial direction of the first connecting hole, a first sealing groove is formed on the end surface of the load-bearing member close to one end of the first connecting hole, and the sealing member includes a first sealing member, which is arranged in the first sealing groove; and / or a second sealing groove is formed on the end surface of the first connecting hole close to the accommodating cavity, and the sealing member includes a second sealing member, which is arranged in the second sealing groove.

13. The housing according to any one of claims 1 to 12, wherein: The connection structure is a mounting hole opened on the connecting member, the mounting hole and the first connecting hole are axially correspondingly arranged, and the end of the mounting hole away from the accommodating cavity is used for the target device to extend therein so that the mounting hole is connected to the target device.

14. The housing according to claim 13, wherein: At least a portion of the mounting hole is located in the first connecting hole, and the connecting member has a second sealing portion, which is combined with the mounting hole to close an end of the mounting hole away from the accommodating cavity.

15. The housing according to any one of claims 1 to 12, wherein: The load-bearing member has a supporting portion, which is higher than the lower side wall of the accommodating cavity in the vertical direction. The upper side of the supporting portion is used to support the battery module so that there is a gap between the battery module and the lower side wall of the accommodating cavity in the vertical direction.

16. The housing according to claim 15, wherein: The first connecting hole is formed on the lower side wall of the accommodating cavity.

17. The housing according to any one of claims 1 to 12, wherein: The load-bearing member extends along a first direction, and the first direction has an angle with the axial direction of the first connecting hole; the number of the first connecting holes and the connecting members is at least two, and they are arranged in a one-to-one correspondence, and at least two of the connecting members are connected to the same load-bearing member and are arranged at intervals along the first direction.

18. The housing according to claim 17, wherein: The number of the load-bearing members is at least two, and at least two of the load-bearing members are arranged at intervals along the second direction. The second direction has an angle with the axial direction of the first connecting hole and has an angle with the first direction. At least two connecting members are connected to each of the load-bearing members.

19. The housing according to any one of claims 1 to 12, wherein: The outer surface of the accommodating cavity protrudes along the axial direction of the first connecting hole to form a mounting platform, and the first connecting hole passes through the mounting platform to communicate with the accommodating cavity.

20. The housing according to claim 19, wherein: The mounting platform is in a strip-shaped structure, and the length and width directions of the mounting platform are both perpendicular to the axial direction of the first connecting hole. There are at least two mounting platforms, and at least two mounting platforms are arranged along the width direction. Each mounting platform is correspondingly provided with the first connecting hole.

21. A battery comprising: The box according to any one of claims 1 to 20; There are at least two battery cells, and at least two of the battery cells are electrically connected and are both arranged in the box.

22. An electrical device, comprising: Electricity-consuming entity; The battery as described in claim 21 is used to supply power to the power-consuming body.

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