Battery pack shell, battery pack and electric equipment

Abstract

The utility model discloses a battery pack shell, a battery pack and electric equipment, and relates to the technical field of batteries, the battery pack shell comprises a tray assembly, the tray assembly comprises a tray main body, a top cover and a plurality of lifting lugs, the tray main body defines a containing cavity with an opening in the top, the top cover covers the containing cavity, and the lifting lugs are arranged on the tray main body; the multiple lifting lugs are arranged on the tray body and at least located on the two opposite sides of the containing cavity, and the lifting lugs are used for being provided with first fasteners in a penetrating mode. And the first sealing piece is arranged at the top of the tray assembly and extends in the circumferential direction of the containing cavity, and at least part of the multiple lifting lugs is located in an area defined by the first sealing piece. According to the battery pack shell provided by the invention, the first fastener penetrating through the lifting lug can be effectively prevented from being subjected to external corrosion and physical damage, and the mounting reliability of the battery pack is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack housing, a battery pack, and an electrical device. Background Art

[0002] In the related art, a sealing structure is usually set between the battery pack cover and the body structure bottom plate, and fasteners pass through the battery pack's ear structure to connect and fix the battery pack and the body structure bottom plate to achieve sealing between the battery pack and the body structure.

[0003] However, current fasteners are susceptible to external corrosion or physical damage, resulting in damage to the fasteners. Utility Model Content

[0004] The present application provides a battery pack housing, a battery pack, and an electrical device, which can effectively prevent the first fastener from being corroded and physically damaged by the outside world, thereby improving the structural safety of the first fastener and improving the installation reliability of the battery pack.

[0005] In the first aspect, the present application provides a battery pack shell, comprising: a tray assembly, comprising: a tray body, a top cover and a plurality of ears, the tray body defining a accommodating cavity with an opening at the top, the top cover sealing the accommodating cavity, the plurality of ears being arranged on the tray body and at least located on opposite sides of the accommodating cavity, the ears being used to pass through a first fastener; a first seal, the first seal being arranged on the top of the tray assembly and extending along the circumference of the accommodating cavity, at least part of the plurality of ears being within the area enclosed by the first seal.

[0006] In some embodiments, the tray body includes a mounting surface, the lifting ear is provided on the mounting surface, and the first sealing member is attached to the mounting surface and the top surface of the top cover.

[0007] In some embodiments, along the height direction of the battery pack housing, the mounting surface and the top surface are flush.

[0008] In some embodiments, the pallet body includes two first side beams opposite to each other along a first direction, and along the height direction, the top surface of the first side beam is constructed as the mounting surface; a plurality of the lifting ears are respectively arranged on the two first side beams, and the first direction and the height direction are perpendicular to each other.

[0009] In some embodiments, a mounting platform is provided on a side edge of the first side beam along the first direction facing the accommodating cavity, and the top cover is mounted on the mounting platform.

[0010] In some embodiments, the pallet body also includes two second side beams opposite to each other along the second direction, and the height direction, the first direction and the second direction are perpendicular to each other; the height of the second side beams is adapted to the height of the mounting sink, and the two side edges of the top cover along the first direction are supported on the mounting sink, and the two side edges of the top cover along the second direction are supported on the top of the second side beams.

[0011] In some embodiments, a side surface of the top cover along the height direction facing away from the accommodating cavity is flush with an end surface of the first side beam along the height direction facing the opening, and the first direction, the second direction and the height direction are perpendicular to each other.

[0012] In some embodiments, the first sealing member includes two first sealing segments opposite to each other along the first direction and two second sealing segments opposite to each other along the second direction, the two first sealing segments are respectively located on the two first side beams, and each first sealing segment is located on the side of the ear on the first side beam facing away from the accommodating cavity; the two ends of the two second sealing segments are respectively connected to the two first sealing segments, and at least part of the structure of each second sealing segment is arranged on the top cover.

[0013] In some embodiments, the first sealing member comprises sealing foam.

[0014] In some embodiments, the tray body is provided with an assembly channel extending along the height direction of the battery pack shell, and the lifting ear includes a sleeve, which is provided in the assembly channel and defines a connection hole extending along the height direction.

[0015] In some embodiments, the sleeve includes: a cylindrical portion and a fixed end portion, the fixed end portion is located at one end of the cylindrical portion along the height direction, a cavity is provided on the inner side of the cylindrical portion, the end of the cylindrical portion opposite to the fixed end portion is open, and the connecting hole passes through the fixed end portion and is connected to the cavity.

[0016] In some embodiments, at least a portion of the fixed end portion protrudes from a side surface of the pallet body where the first seal is provided, and the portion of the fixed end portion protruding from the pallet body is welded to the pallet body to form a weld.

[0017] In some embodiments, the sleeve further includes: a blocking member, wherein the blocking member blocks an end of the cavity opposite to the fixed end.

[0018] In some embodiments, the inner wall of the cavity is provided with a connecting thread, the outer wall of the blocking member is provided with a matching thread, and the blocking member and the cylindrical portion are threadedly connected via the connecting thread and the matching thread.

[0019] In some embodiments, at least one of the outer wall of the sealing member and the inner wall of the cavity is provided with a sealing groove, the sealing groove extending along the circumference of the cavity, and the sleeve further includes a second sealing member embedded in the sealing groove.

[0020] In some embodiments, the mounting platform includes a support surface abutting the top cover along the height direction, a first glue groove is provided on the support surface, the first glue groove is filled with connecting glue, and the top cover is bonded to the support surface through the connecting glue.

[0021] In some embodiments, there are multiple first glue grooves, and the multiple first glue grooves are arranged at intervals along the first direction.

[0022] In some embodiments, the mounting platform also includes a limiting surface perpendicular to the opening direction, the limiting surface is spaced from the top cover and together define a second glue groove, the second glue groove is filled with connecting glue, and the top cover is bonded to the limiting surface through the connecting glue.

[0023] In some embodiments, the tray body is further provided with a plurality of first connection holes, and the top cover is further provided with a second connection hole, and the tray body and the top cover are connected by a second fastener passing through the first connection holes and the second connection holes in sequence.

[0024] In a second aspect, the present application provides a battery pack, comprising a battery pack and the above-mentioned battery pack shell, wherein the battery pack is arranged in the accommodating cavity.

[0025] In a third aspect, the present application provides an electrical device, comprising a main body, a plurality of first fasteners and the battery pack described in the first aspect above, wherein the plurality of first fasteners are respectively passed through the plurality of the hanging ears to connect and fix the battery pack and the main body.

[0026] The battery pack housing provided herein includes a tray assembly and a first sealing member. The tray assembly includes a tray body, a top cover, and multiple lugs. The tray body defines a receiving cavity with an opening at the top, and the top cover seals the receiving cavity. Multiple lugs are provided on the tray body and at least on opposite sides of the receiving cavity. The lugs are used to pass through the first fastener. The first sealing member is provided at the top of the tray assembly and extends along the circumference of the receiving cavity. At least some of the multiple lugs are located within the area enclosed by the first sealing member. This effectively protects the first fastener from external corrosion and physical damage, improves the structural safety of the first fastener, and enhances the installation reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A schematic diagram of the structure of the battery pack provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 Schematic diagram of some structures in Figure 1 ;

[0030] Figure 3 for Figure 2 Schematic diagram of the structure of the middle sealing member;

[0031] Figure 4 for Figure 1 Schematic diagram of some structures in Figure 2 ;

[0032] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0033] Description of reference numerals:

[0034] 10-battery pack;

[0035] 101-battery pack housing;

[0036] 100-Pallet assembly;

[0037] 110 - tray body; 111 - receiving cavity; 112 - mounting platform; 1121 - supporting surface; 1122 - first adhesive groove; 1123 - limiting surface; 1124 - second adhesive groove; 113 - first side beam; 1131 - assembly channel; 1132 - mounting surface; 114 - second side beam;

[0038] 120-top cover; 121-top surface;

[0039] 130 - lifting ear; 131 - sleeve; 1311 - connecting hole; 1312 - barrel; 1313 - fixed end; 1314 - cavity; 1315 - first cavity section; 1316 - second cavity section; 133 - blocking member; 1331 - first blocking section; 1332 - second blocking section; 1333 - sealing groove; 134 - second sealing member;

[0040] 200-first fastener;

[0041] 300-first sealing member;

[0042] 310-first sealing section;

[0043] 320-second sealing section;

[0044] 400-weld;

[0045] 500-Second fastener. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] Electric vehicles usually use battery packs to obtain power. By adopting a battery pack in the form of cell-to-body (CTB), the battery system can be integrated into the body structure to improve the energy density and safety of the battery pack, thereby improving the endurance and performance of the electric vehicle.

[0048] In the prior art, a sealing structure is typically installed between the battery pack cover and the vehicle body structure floor. Fasteners pass through the battery pack's lug structure to secure the battery pack to the vehicle body structure floor, achieving a seal between the battery pack and the vehicle body structure. However, existing fasteners are susceptible to external corrosion or physical damage, resulting in damage to the fasteners.

[0049] In view of this, the present application provides a battery pack shell, a battery pack and an electrical device, which can ensure that the first fastener passed through the lifting ear is in a closed space defined by the tray assembly, the first seal and the vehicle body, effectively preventing the first fastener from being subjected to external corrosion and physical damage, improving the structural safety of the first fastener, and ensuring the long-term stable operation and service life of the battery pack.

[0050] The following combination Figure 1-Figure 5 The battery pack housing 101 provided in the embodiment of the present application is described in detail.

[0051] The battery pack housing 101 of the embodiment of the present application may include: a tray assembly 100 and a first sealing member 300 .

[0052] The tray assembly 100 may include a tray body 110, a top cover 120, and a plurality of lifting ears 130. The tray body 110 defines a receiving cavity 111 with an opening at the top. Optionally, a mounting platform 112 is provided around the opening of the tray body 110. For example, the mounting platform 112 may be provided only on opposite sides of the tray body 110, or may surround the tray body 110. The top cover 120 may be embedded in the mounting platform 112 and cover the receiving cavity 111. Alternatively, the top surface 121 of the tray body 110 may be flat, and the top cover 120 may cover the top surface 121 of the tray body 110.

[0053] A plurality of lifting ears 130 are provided on the tray body 110 and are at least located on opposite sides of the accommodating cavity 111. The lifting ears 130 can be used to connect the main body of the electrical equipment (such as the vehicle body) and the first fastener 200 of the battery pack 10. The battery pack 200 can be provided in the accommodating cavity 111. The first seal 300 is provided on the top of the tray assembly 100 and extends along the circumference of the accommodating cavity 111. At least part of the plurality of lifting ears 130 can be within the area enclosed by the first seal 300. In other words, only a part of the lifting ears 130 can be within the area enclosed by the first seal 300, or all of the lifting ears 130 can be within the area enclosed by the first seal 300. Correspondingly, the first fastener 200 passing through the lifting ear 130 is also within the area enclosed by the first seal 300. In this way, when the battery pack 10 is installed on the main body of the electrical equipment, such as the vehicle body, the first fastener 200 will be in a confined space defined by the tray body 110, the first seal 300 and the vehicle body, which can protect the first fastener 200 from external corrosion and physical damage, thereby ensuring the installation reliability and service life of the battery pack 10.

[0054] In a specific implementation, the tray assembly 100 serves as the basic support structure of the battery pack 10 and may include a tray body 110 and a top cover 120. The tray body 110 defines a receiving cavity 111 with an opening at the top, thus providing a safe and stable storage space for the battery pack 200.

[0055] A mounting platform 112 is provided around the opening of the tray body 110 , so that the top cover 120 can be firmly embedded in the tray body 110 and cover the accommodating cavity 111 , effectively preventing the external environment from affecting the battery pack 200 .

[0056] Furthermore, the tray assembly 100 further includes a plurality of lifting ears 130 . Each lifting ear 130 is firmly mounted on the tray body 110 and is distributed at least on two opposite sides of the accommodating cavity 111 .

[0057] It should be noted that the battery pack housing 101 is also provided with a first seal 300, which provides a guarantee for the sealing performance between the battery pack 10 and the electrical device. The first seal 300 is provided on the top of the tray assembly 100 and extends along the circumference of the accommodating cavity 111 to achieve a good seal between the battery pack 10 and the electrical device. In addition, see Figure 1 As shown, the first seal 300 is a continuous annular structure, and each ear 130 is located in the area enclosed by the first seal 300, and the ear 130 is lower than the top end face of the first seal 300 in the height direction. In this way, it can be ensured that each ear 130 and the first fastener 200 passing through the ear 130 are in the closed space defined by the tray assembly 100, the first seal 300 and the vehicle body, effectively preventing the first fastener 200 from external corrosion and physical damage, improving the structural safety of the first fastener 200, and ensuring the long-term stable operation and service life of the battery pack 10.

[0058] It should also be noted that in related art, the area of the top cover needs to be larger than the sealing range of the sealing structure to ensure a good seal between the battery pack and the electrical device. However, the material cost of the top cover is high, which increases the overall cost of the battery pack. The battery pack 10 provided in this embodiment, by providing the tray body 110, reduces the area of the top cover 120 compared to the top cover area in related art, thereby reducing costs.

[0059] Optionally, the lugs 130 may protrude from the top surface of the tray body 110. This arrangement allows each lug 130 to securely connect to a corresponding connection point on an electrical device (e.g., the floor of the vehicle's body structure). The lugs 130 enhance the stability of the battery pack 10 while the vehicle is in motion, simplifying the installation and removal process and improving efficiency.

[0060] In some embodiments, the tray body 110 includes a mounting surface 1132 , the lug 130 is provided on the mounting surface 1132 , and the first seal 300 is attached to the mounting surface 1132 and the top surface 121 of the top cover 120 , thereby ensuring the installation stability of the first seal 300 .

[0061] In some embodiments, along the height direction of the battery pack shell 101, the mounting surface 1132 is flush with the top surface 121. This makes the arrangement surface of the first seal 300 smoother, which is beneficial to improving the installation stability of the first seal 300. At the same time, it can also improve the sealing of the enclosed space defined by the disc assembly 100, the first seal 300 and the vehicle body, thereby better protecting the first fastener 200.

[0062] See also Figure 1In some embodiments, the pallet body 110 includes two first side beams 113 opposing each other along a first direction and two second side beams 114 opposing each other along a second direction, where the first and second directions are perpendicular to each other. A plurality of lifting ears 130 are provided on each of the two first side beams 113. In other words, the top surfaces 121 of the first side beams 113 can constitute the aforementioned mounting surfaces 1132.

[0063] Among them, see Figure 1 , the first direction corresponds to Figure 1 The X-axis direction in the second direction corresponds to Figure 1 The Y-axis direction in .

[0064] It can be understood that by providing the first side beam 113 and the second side beam 114 , a stable support frame is provided for the pallet body 110 .

[0065] Furthermore, in order to achieve reliable connection between the battery pack 10 and the electrical equipment (such as the bottom plate of the vehicle body structure) through the lifting lugs 130, each lifting lug 130 is set on the two first side beams 113, which can make the battery pack 10 more evenly stressed and reduce the adverse effects on other parts of the tray body 110.

[0066] See also Figure 4 and Figure 5 In some embodiments, the mounting platform 112 is formed on a side edge of the first side beam 113 facing the accommodating cavity 111 along the first direction.

[0067] Such an arrangement ensures that the top cover 120 can be firmly embedded in the mounting sink 112 , thereby effectively covering the accommodating cavity 111 and preventing the external environment from adversely affecting the battery pack 200 .

[0068] Furthermore, by providing the installation sunken platform 112 and embedding the top cover 120 in the installation sunken platform 112 , it is helpful to achieve a close fit between the top cover 120 and the tray body 110 .

[0069] In addition, when manufacturing the pallet body 110 , it is sufficient to set the mounting platform 112 on the first side beam 113 , and then accurately embed the top cover 120 in the mounting platform 112 . This improves production efficiency and simplifies the assembly process of the top cover 120 .

[0070] See also Figure 1 and Figure 5 In some embodiments, the height of the second side beam 114 along the height direction is adapted to the height of the mounting platform 112, the two side edges of the top cover 120 along the first direction are supported on the mounting platform 112, and the two side edges of the top cover 120 along the second direction are supported on the top of the second side beam 114.

[0071] Among them, see Figure 1, the height direction corresponds to Figure 1 The Z-axis direction.

[0072] It should be noted that setting the height of the second side beam 114 higher than the height of the mounting platform 112 will hinder the fit between the top cover 120 and the mounting platform 112; setting the height of the second side beam 114 lower than the height of the mounting platform 112 will cause the top cover 120 to be supported only on the mounting platform 112, affecting the structural rigidity of the top cover 120 and the sealing between the top cover 120 and the tray body 110. In this way, setting the height of the second side beam 114 to match the height of the mounting platform 112 facilitates the installation of the top cover 120.

[0073] It can be understood that when the top cover 120 is embedded, the two side edges of the top cover 120 along the first direction are supported on the mounting sink 112, and the second side beam 114 is adapted to the mounting sink 112, so that the two side edges of the top cover 120 along the second direction can be supported on the top of the second side beam 114. In this way, the rigidity of the top cover 120 is enhanced, and the stability of the top cover 120 under load is ensured. In addition, the sealing between the top cover 120 and the tray body 110 is also improved.

[0074] See also Figure 1 In some embodiments, a side surface of the top cover 120 facing away from the accommodating cavity 111 along the height direction is flush with an end surface of the first side beam 113 facing the opening along the height direction, and the first direction, the second direction and the height direction are perpendicular to each other.

[0075] In this way, the flush arrangement between the top cover 120 and the first side beam 113 improves the appearance of the battery pack 10 and avoids the risk of collision due to height difference.

[0076] See also Figure 1 In some embodiments, the first sealing member 300 includes two first sealing segments 310 opposing each other along a first direction and two second sealing segments 320 opposing each other along a second direction. The two first sealing segments 310 are located on the two first side beams 113, respectively. Each first sealing segment 310 is located on a side of the ear 130 on the first side beam 113 facing away from the accommodating cavity 111. The two second sealing segments 320 are connected to the two first sealing segments 310 at both ends, and at least a portion of each second sealing segment 320 is disposed on the top cover 120.

[0077] In specific implementation, the first seal 300 includes two first sealing segments 310 arranged opposite each other along a first direction. The two first sealing segments 310 are mounted on the two first side beams 113, respectively, to seal the gap between the tray assembly 100 and the electrical equipment. Each first sealing segment 310 is located on the side of the ear 130 on the first side beam 113 where it is located, facing away from the accommodating cavity 111. This ensures a tight seal and keeps each ear 130 within the sealing range of the first seal 300, effectively protecting the ear 130 from external corrosion and physical damage, thereby enhancing the structural safety of the ear 130.

[0078] Furthermore, to enhance the integrity and stability of the seal between the tray assembly 100 and the electrical device, the first seal 300 further includes two second sealing segments 320 arranged opposite each other along a second direction. The ends of the second sealing segments 320 are connected to the two first sealing segments 310, forming a stable sealing structure with the first sealing segments 310.

[0079] In addition to the aforementioned structure in which the top surface of the first side beam 113 is planar, in other possible embodiments, the first side beam 113 may include a transverse section and a longitudinal section, wherein the transverse section is located on the side of the longitudinal section facing away from the accommodating cavity 111, and the top surface of the transverse section is lower than the top surface of the longitudinal section. The top surface of the transverse section constitutes the mounting surface 1132 of the tray body 110, and a plurality of lugs 130 may be spaced apart on the transverse section. Accordingly, the thickness of the first sealing section 310 may be greater than the thickness of the second sealing section 320, and the top surface of the first sealing section 310 and the top surface of the second sealing section 320 may be flush to facilitate sealing with the vehicle body. The thickness of the portion of the first sealing section 310 that extends downwardly beyond the second sealing section 320 is adapted to the height difference between the top surfaces of the transverse section and the longitudinal section, so that the bottom surface of the first sealing section 310 can contact the top surface of the transverse section, thereby achieving a connection. Accordingly, at least part of the ears 130 on the transverse section may be located inside the first sealing section 310 to ensure that the first sealing member 300 can better protect the first fastener 200 passing through the ears 130 .

[0080] In some embodiments, the first sealing member 300 includes a sealing foam. The sealing foam generally has a microporous structure, which allows the sealing foam to deform under pressure and fit tightly between the tray assembly 100 and the electrical device, effectively preventing the penetration of gas, liquid, or tiny particles, thereby ensuring a tight seal.

[0081] In addition, the sealing foam has good resilience, so that the sealing foam can maintain a stable sealing effect after being compressed for a long time or undergoing multiple compressions. In this way, the service life of the first sealing member 300 is extended and the maintenance cost caused by sealing failure is reduced.

[0082] Of course, the present application is not limited thereto, and the first sealing member 300 may also be a rubber sealing member or other structural members suitable as sealing materials.

[0083] See also Figure 2 In some embodiments, the tray body 110 is provided with an assembly channel 1131 extending along the height direction of the battery pack housing 101. For example, the assembly channel 1131 may be provided through the first side rail 113. The lifting lug 130 may include a sleeve 131. The sleeve 131 is provided through the assembly channel 1131 and defines a connection hole 1311 extending along the height direction. Thus, the first fastener 200 may be provided through the connection hole 1311 and exit from the side of the tray body 110 where the first sealing member 300 is provided.

[0084] In order to realize the assembly of the lifting lug 130 , the first side beam 113 is provided with an assembly channel 1131 for realizing the connection between the lifting lug 130 and the first side beam 113 .

[0085] It should be noted that the lifting lug 130 may include a sleeve 131. The sleeve 131 matches the assembly channel 1131 and is used to be inserted into the assembly channel 1131 of the first side beam 113, so as to prevent the sleeve 131 from loosening or deflecting.

[0086] Furthermore, in order to achieve a stable connection between the tray assembly 100 and the electrical equipment, a connection hole 1311 extending in the height direction is defined inside the sleeve 131, so that the first fastener 200 passes through the connection hole 1311 and passes out from the side of the first side beam 113 where the first seal 300 is provided to connect with the electrical equipment. Thus, the first side beam 113 is firmly connected to the electrical equipment through the lifting ear 130.

[0087] See also Figure 2 In some embodiments, the sleeve 131 includes a cylindrical portion 1312 and a fixed end portion 1313. The fixed end portion 1313 is located at one end of the cylindrical portion 1312 in the height direction. A cavity 1314 is defined within the cylindrical portion 1312. The end of the cylindrical portion 1312 opposite the fixed end portion 1313 is open. The connecting hole 1311 passes through the fixed end portion 1313 and communicates with the cavity 1314, allowing the first fastener 200 to pass through the connecting hole 1311 from the cavity 1314 and exit from the side of the first side beam 113 where the first sealing member 300 is located.

[0088] Among them, by providing a cavity 1314 on the inner side of the cylindrical portion 1312, the cavity 1314 is communicated with the connecting hole 1311, providing a channel for the first fastener 200 to pass through, ensuring the smoothness of the first fastener 200 during the assembly process.

[0089] In addition, the connection hole 1311 passes through the fixed end 1313 and communicates with the cavity 1314. This allows the first fastener 200 to smoothly pass through the cavity 1314 through the connection hole 1311 and exit from the side of the first side beam 113 where the first seal 300 is provided through the through connection hole 1311 to connect to the electrical device.

[0090] See also Figure 2 In some embodiments, at least a portion of the fixed end portion 1313 protrudes from a side surface of the pallet body 110 on which the first seal 300 is provided, and the portion of the fixed end portion 1313 protruding from the pallet body 110 is welded to the pallet body 110, forming a weld 400. For example, at least a portion of the fixed end portion 1313 protrudes from a side surface of the first side beam 113 on which the first seal 300 is provided, and the portion of the fixed end portion 1313 protruding from the first side beam 113 is welded to the first side beam 113, forming a weld 400.

[0091] Specifically, the fixed end portion 1313 is not completely embedded in the first side beam 113, but at least part of the structure protrudes from the side surface of the first side beam 113 provided with the first seal 300. This arrangement ensures that a more secure connection is formed between the fixed end portion 1313 and the first side beam 113.

[0092] Furthermore, in order to achieve a tight connection between the fixed end 1313 and the first side beam 113, the portion of the fixed end 1313 protruding from the first side beam 113 is welded to the first side beam 113 to form a weld 400, thereby enhancing the connection strength between the fixed end 1313 and the first side beam 113 and improving the connection stability between the lifting ear 130 and the first side beam 113.

[0093] See also Figure 2 and Figure 3 In some embodiments, the sleeve 131 may further include: a blocking member 133 , which blocks an end of the cavity 1314 opposite to the fixed end 1313 .

[0094] It can be understood that by providing the sealing member 133, the end of the cavity 1314 opposite to the fixed end 1313 (i.e., the end of the cavity 1314 away from the connecting hole 1311) can be effectively sealed, thereby preventing external impurities from entering the interior of the cavity 1314, thereby protecting the integrity and functionality of the internal structure of the cavity 1314.

[0095] See also Figure 2 and Figure 3In some embodiments, the inner wall of cavity 1314 is provided with connecting threads, and the outer wall of blocking member 133 is provided with mating threads. Blocking member 133 and barrel portion 1312 are threadedly connected via the connecting threads and mating threads. This provides a simple and reliable connection between blocking member 133 and barrel portion 1312, making assembly and disassembly easy.

[0096] In a specific implementation, the blocking member 133 can be connected to the cavity 1314 through threaded engagement between the connecting thread and the mating thread, thereby blocking the cavity 1314 .

[0097] It is understood that threaded connections have certain self-locking and sealing properties. By rotating plugging member 133, the engagement depth between the mating and connecting threads is increased, thereby achieving a tight connection between plugging member 133 and cavity 1314 and sealing cavity 1314. The self-locking nature of the threaded connection ensures a secure connection between plugging member 133 and cavity 1314, while the sealing property of the threaded connection effectively prevents external impurities from entering cavity 1314, ensuring a sealed environment within sleeve 131.

[0098] See also Figure 2 and Figure 3 In some embodiments, the cavity 1314 includes a first cavity segment 1315 and a second cavity segment 1316 which are sequentially away from the fixed end 1313 along the height direction, and the inner diameter of the second cavity segment 1316 is larger than the inner diameter of the first cavity segment 1315 to form a shoulder structure at the connection between the first cavity segment 1315 and the second cavity segment 1316, and the sealing member 133 includes a first sealing segment 1331 and a second sealing segment 1332 which are sequentially arranged along the height direction, wherein the first sealing segment 1331 is located in the first cavity segment 1315, and the second sealing segment 1332 is located in the second cavity segment 1316 and is against the shoulder structure.

[0099] By setting the inner diameter of the second cavity section 1316 to be larger than the inner diameter of the first cavity section 1315 , a shoulder structure is formed at the connection between the first cavity section 1315 and the second cavity section 1316 , thereby facilitating the positioning and sealing of the blocking member 133 .

[0100] It can be understood that in order to make the sealing piece 133 match the shoulder structure, the sealing piece 133 may include a first sealing segment 1331 and a second sealing segment 1332, and the first sealing segment 1331 and the second sealing segment 1332 are matched with the first cavity segment 1315 and the second cavity segment 1316 respectively, so as to ensure that the sealing piece 133 can seal the cavity 1314.

[0101] Furthermore, the close fit between first sealing section 1331 and first cavity section 1315 achieves a preliminary seal of cavity 1314. Second sealing section 1332 is located within second cavity section 1316 and closely abuts against the shoulder structure, enabling sealing member 133 to maintain its position stability when subjected to external forces, leveraging the support provided by the shoulder structure and further enhancing the sealing effect.

[0102] See also Figure 2 and Figure 3 In some embodiments, the connecting thread is formed in the first cavity section 1315 , and the mating thread is formed in the first blocking section 1331 .

[0103] It is understood that when the first sealing segment 1331 is screwed into the first cavity segment 1315, the interaction between the mating thread and the connecting thread generates a certain preload force, thereby achieving the connection between the sealing member 133 and the sleeve 131 and ensuring the seal between the sealing member 133 and the sleeve 131. In addition, the threaded connection has good self-locking properties, can resist loosening caused by external factors, and ensure the stability of the connection between the sealing member 133 and the sleeve 131.

[0104] See also Figure 2 and Figure 3 In some embodiments, at least one of the outer wall of the sealing member 133 and the inner wall of the cavity 1314 is provided with a sealing groove 1333, which extends along the circumference of the cavity 1314. The sleeve 131 also includes a second sealing member 134, which is embedded in the sealing groove 1333.

[0105] To further improve the sealing between the blocking member 133 and the cavity 1314, a sealing groove 1333 is provided between the outer wall of the blocking member 133 and the inner wall of the cavity 1314. For example, the sealing groove 1333 can be provided on the outer wall of the blocking member 133, but this embodiment is not limited thereto.

[0106] The second sealing member 134 is then embedded in the sealing groove 1333. The second sealing member 134 can be made of a material with good elasticity and wear resistance. For example, the second sealing member 134 can be a rubber sealing ring or other sealing structural member with a certain degree of elasticity, so that the second sealing member 134 deforms when subjected to pressure, thereby abutting between the outer wall of the blocking member 133 and the inner wall of the cavity 1314, thereby improving the sealing between the blocking member 133 and the cavity 1314.

[0107] Specifically, when the sealing member 133 is installed in the cavity 1314, the second sealing member 134 is squeezed and deformed, and the elastic force of the second sealing member 134 causes the second sealing member 134 to abut between the outer wall of the sealing member 133 and the inner wall of the cavity 1314, thereby effectively blocking external impurities and preventing external impurities from entering the cavity 1314.

[0108] Optionally, a working groove is defined on the inner side of the blocking piece 133, and the cross-section of the working groove perpendicular to the axial direction of the sleeve 131 can be a hexagon or other shape. When the blocking piece 133 is assembled into the cavity 1314, a tool that is adapted to the cross-sectional shape of the working groove can be used to insert the working groove, and then the blocking piece 133 can be screwed into the cavity 1314 to complete the assembly.

[0109] See also Figure 4 and Figure 5 In some embodiments, the mounting platform 112 includes a support surface 1121 that abuts against the top cover 120 along the opening direction, and a first glue groove 1122 is provided on the support surface 1121. The first glue groove 1122 is filled with connecting glue, and the top cover 120 is bonded to the support surface 1121 through the connecting glue.

[0110] It is understandable that the installation platform 112 can provide a stable support for the installation of the top cover 120. Specifically, the installation platform 112 is provided with a support surface 1121, which forms contact and abutment with the bottom surface of the top cover 120, thereby ensuring the stability of the top cover 120 during installation.

[0111] In order to improve the connection strength between the top cover 120 and the mounting platform 112, a first glue groove 1122 can be set on the support surface 1121, and then the first glue groove 1122 is filled with connecting glue. After the connecting glue is cured, the top cover 120 and the mounting platform 112 are tightly connected.

[0112] Optionally, there are multiple first glue grooves 1122, where multiple means two or more, and the multiple first glue grooves 1122 are spaced apart along the width direction of the first side beam 113. In this way, the installation stability of the top cover 120 and the sealing performance of the accommodating cavity 111 can be improved.

[0113] See also Figure 4 and Figure 5 In some embodiments, the mounting platform 112 further includes a limiting surface 1123 perpendicular to the opening direction. The limiting surface 1123 is spaced apart from the top cover 120 and together define a second glue groove 1124. The second glue groove 1124 is filled with connecting glue, and the top cover 120 is bonded to the limiting surface 1123 through the connecting glue.

[0114] In order to further improve the connection strength between the top cover 120 and the mounting sink 112, the mounting sink 112 can also be provided with a limiting surface 1123, and then the second glue groove 1124 is jointly defined by the gap between the limiting surface 1123 and the top cover 120. By filling the second glue groove 1124 with connecting glue, the connecting glue is cured to make the top cover 120 and the mounting sink 112 tightly connected, so that the top cover 120 can be prevented from loosening relative to the mounting sink 112.

[0115] See also Figure 1 In some embodiments, the tray body 110 is further provided with a plurality of first connection holes, and the top cover 120 is further provided with a second connection hole. The tray body 110 and the top cover 120 are connected by the second fastener 500 passing through the first connection holes and the second connection holes in sequence.

[0116] To ensure a secure connection between the tray body 110 and the top cover 120, a second fastener 500 is used to connect the tray body 110 and the top cover 120. The second fastener 500 is sequentially inserted through the first connection hole in the tray body 110 and the second connection hole in the top cover 120. The second fastener 500 is then tightened to securely connect the tray body 110 and the top cover 120. This enhances the overall stability of the tray assembly 100 and effectively prevents the tray body 110 and the top cover 120 from loosening or separating due to vibration or external forces.

[0117] Based on the above embodiment, the embodiment of the present application provides a battery pack 10, including a battery pack 200 and the battery pack housing 101 of the above embodiment. The battery pack 200 is installed in the accommodating cavity 111 of the tray assembly 100. In this way, the space provided by the tray assembly 100 is utilized to ensure the stability and safety of the battery pack 200 during transportation and use. By providing the battery pack 200, the battery pack 10 has the ability to store and output electric energy, providing power support for various electric devices. In addition, the battery pack 10 of this embodiment also has the same effect as the above-mentioned battery pack housing 101.

[0118] Based on the above embodiments, an embodiment of the present application provides an electrical device, including the battery pack in the above embodiments.

[0119] The specific structure of the battery pack has been described in detail in the above embodiments and will not be repeated here.

[0120] Illustratively, the electrical device may be a vehicle, such as a new energy vehicle, a pure electric vehicle, or a hybrid vehicle, but the embodiments of the present application are not limited thereto.

[0121] Since the electrical equipment of this embodiment adopts the above-mentioned battery pack, it has the same effect as the above-mentioned battery pack, and will not be described in detail here.

[0122] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0123] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0124] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0125] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack housing, characterized in that: include: A tray assembly comprises: a tray body, a top cover, and a plurality of ears, wherein the tray body defines a receiving cavity with an opening at the top, the top cover covers the receiving cavity, the plurality of ears are provided on the tray body and at least on opposite sides of the receiving cavity, the ears being used to pass a first fastener; A first sealing member is provided on the top of the tray assembly and extends along the circumference of the accommodating cavity, and at least part of the plurality of ears is located in the area enclosed by the first sealing member.

2. The battery pack housing according to claim 1, wherein: The tray body includes a mounting surface, the lifting lug is provided on the mounting surface, and the first sealing member is attached to the mounting surface and the top surface of the top cover.

3. The battery pack housing according to claim 2, wherein: Along the height direction of the battery pack shell, the mounting surface is flush with the top surface.

4. The battery pack housing according to claim 3, wherein: The pallet body comprises two first side beams opposite to each other along a first direction, and along the height direction, the top surfaces of the first side beams are configured as the mounting surfaces; The plurality of lifting ears are respectively provided on the two first side beams, and the first direction and the height direction are perpendicular to each other.

5. The battery pack housing according to claim 4, wherein: A mounting platform is provided on one side edge of the first side beam facing the accommodating cavity along the first direction, and the top cover is mounted on the mounting platform.

6. The battery pack housing according to claim 5, characterized in that: The pallet body also includes two second side beams opposite to each other along the second direction, and the height direction, the first direction and the second direction are perpendicular to each other; the height of the second side beams is adapted to the height of the mounting sink, and the two side edges of the top cover along the first direction are supported on the mounting sink, and the two side edges of the top cover along the second direction are supported on the top of the second side beams.

7. The battery pack housing according to claim 6, wherein: The first sealing member includes two first sealing segments opposite to each other along the first direction and two second sealing segments opposite to each other along the second direction. The two first sealing sections are respectively located on the two first side beams, and each first sealing section is located on a side of the ear on the first side beam facing away from the accommodating cavity; Two ends of the two second sealing segments are respectively connected to the two first sealing segments, and at least a portion of the structure of each second sealing segment is disposed on the top cover.

8. The battery pack housing according to any one of claims 1 to 7, wherein: The first sealing member includes sealing foam.

9. The battery pack housing according to any one of claims 1 to 7, characterized in that: The tray body is provided with an assembly channel penetrating along the height direction of the battery pack shell, and the lifting lug includes: A sleeve is provided in the assembly passage, and the sleeve defines a connection hole extending along the height direction.

10. The battery pack housing according to claim 9, wherein: The sleeve includes: a cylindrical portion and a fixed end portion, the fixed end portion is located at one end of the cylindrical portion along the height direction, a cavity is provided on the inner side of the cylindrical portion, the end of the cylindrical portion opposite to the fixed end portion is open, and the connecting hole passes through the fixed end portion and is connected to the cavity.

11. The battery pack housing according to claim 10, wherein: At least part of the structure of the fixed end protrudes from a side surface of the tray body on which the first sealing member is provided. The portion of the fixed end protruding from the tray body is welded to the tray body to form a weld.

12. The battery pack housing according to claim 10, wherein: The sleeve further includes a blocking member, which blocks an end of the cavity opposite to the fixed end.

13. The battery pack housing according to claim 12, wherein: The inner wall of the cavity is provided with a connecting thread, the outer wall of the blocking member is provided with a matching thread, and the blocking member and the cylindrical body are threadedly connected through the connecting thread and the matching thread.

14. The battery pack housing according to claim 12, wherein: At least one of the outer wall of the blocking member and the inner wall of the cavity is provided with a sealing groove, and the sealing groove extends along the circumference of the cavity. The sleeve further includes a second sealing member embedded in the sealing groove.

15. The battery pack housing according to any one of claims 5 to 7, characterized in that: The mounting platform includes a support surface abutting against the top cover along the height direction, a first glue groove is provided on the support surface, the first glue groove is filled with connecting glue, and the top cover is bonded to the support surface through the connecting glue.

16. The battery pack housing according to claim 15, wherein: There are a plurality of first glue grooves, and the plurality of first glue grooves are arranged at intervals along the first direction.

17. The battery pack housing according to claim 15, wherein: The mounting platform also includes a limiting surface perpendicular to the opening direction. The limiting surface is spaced apart from the top cover and together define a second glue groove. The second glue groove is filled with connecting glue, and the top cover is bonded to the limiting surface through the connecting glue.

18. The battery pack housing according to any one of claims 1 to 7, characterized in that: The tray body is further provided with a plurality of first connection holes, and the top cover is further provided with a second connection hole. The tray body and the top cover are connected by a second fastener passing through the first connection holes and the second connection holes in sequence.

19. A battery pack, characterized in that: It comprises a battery pack and a battery pack shell according to any one of claims 1 to 18, wherein the battery pack is arranged in the accommodating cavity.

20. An electrical device, characterized in that: It comprises a main body, a plurality of first fasteners and the battery pack according to claim 19, wherein the plurality of first fasteners are respectively passed through the plurality of the hanging ears to connect and fix the battery pack and the main body.

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