Battery pack case, battery pack and electrical device

Abstract

Disclosed in the present application are a battery pack case (101), a battery pack (10) and an electrical device (20). The battery pack case (101) comprises a tray assembly (100) and a first sealing member (300), wherein the tray assembly (100) comprises: a tray body (110), a top cover (120) and a plurality of lifting lugs (130), the tray body (110) defining an accommodating cavity (111) which has an opening at the top; the top cover (120) covers the accommodating cavity (111); the plurality of lifting lugs (130) are arranged on the tray body (110) and are at least located on two opposite sides of the accommodating cavity (111), and the lifting lugs (130) are configured to allow a first fastener (200) to pass therethrough; and the first sealing member (300) is arranged at the top of the tray assembly (100) and extends in the circumferential direction of the accommodating cavity (111), and at least some of the plurality of lifting lugs (130) are located in an area enclosed by the first sealing member (300).

Description

Battery pack shell, battery pack and electric device

[0001] The present application claims priority to the Chinese patent application No. 202422310672.4, filed on September 20, 2024, and entitled "Battery pack shell, battery pack and electric device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, and in particular, to a battery pack shell, a battery pack and an electric device. BACKGROUND

[0003] In the related art, a sealing structure is usually arranged between a battery pack upper cover and a vehicle body structure bottom plate, and a fastener is arranged to pass through a hanger structure of the battery pack to connect and fix the battery pack and the vehicle body structure bottom plate, so as to realize the sealing between the battery pack and the vehicle body structure.

[0004] However, the current fastener is prone to corrosion or physical damage from the outside, resulting in damage to the fastener. SUMMARY

[0005] The present application provides a battery pack shell, a battery pack and an electric device, which can effectively avoid corrosion and physical damage of the first fastener, improve the structural safety of the first fastener, and improve the installation reliability of the battery pack.

[0006] In a 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 hangers, the tray body defines a receiving cavity with an opening at the top, the top cover covers the receiving cavity, and the plurality of hangers are arranged on the tray body and at least on opposite sides of the receiving cavity, and the hangers are used for arranging the first fastener; and a first sealing member, the first sealing member is arranged on the top of the tray assembly and extends along the circumference of the receiving cavity, and at least part of the plurality of hangers is located in the area enclosed by the first sealing member.

[0007] In some embodiments, the tray body comprises a mounting surface, the hangers are arranged on the mounting surface, and the first sealing member is attached to the mounting surface and the top surface of the top cover.

[0008] In some embodiments, along the height direction of the battery pack shell, the mounting surface and the top surface are flush.

[0009] In some embodiments, the tray body comprises two first edge beams opposite in a first direction, and along the height direction, the top surface of the first edge beam is configured as the mounting surface; and the plurality of hangers are arranged on the two first edge beams respectively, and the first direction is perpendicular to the height direction.

[0010] In some embodiments, the first side beam is provided with a mounting sink along a side edge of the first side beam facing the accommodating cavity in the first direction, and the top cover is mounted on the mounting sink.

[0011] In some embodiments, the tray body further comprises two second side beams opposite in a second direction, the height direction, the first direction and the second direction being perpendicular to each other in pairs, the height of the second side beam is adapted to the height of the mounting sink, the top cover is supported on the top of the second side beam along the two side edges of the top cover in the second direction.

[0012] In some embodiments, a side surface of the top cover facing away from the accommodating cavity in the height direction is flush with an end surface of the first side beam facing the opening in the height direction, the first direction, the second direction and the height direction being perpendicular to each other in pairs.

[0013] In some embodiments, the first seal comprises two first sealing sections opposite in the first direction and two second sealing sections opposite in the second direction, the two first sealing sections are respectively on the two first side beams, and each first sealing section is located on a side of the ear opposite to the accommodating cavity on the first side beam; the two ends of the two second sealing sections are connected with the two first sealing sections, and at least part of the structure of each second sealing section is provided in the top cover.

[0014] In some embodiments, the first seal comprises sealing foam.

[0015] In some embodiments, the tray body is provided with an assembly channel extending through the height direction of the battery pack shell, and the ear comprises a sleeve, the sleeve is provided in the assembly channel, and the sleeve defines a connecting hole extending in the height direction.

[0016] In some embodiments, the sleeve comprises a barrel portion and a fixed end portion, the fixed end portion is located at one end of the barrel portion in the height direction, the inside of the barrel portion is provided with a cavity, and the opposite end of the barrel portion to the fixed end portion is open, the connecting hole penetrates through the fixed end portion and communicates with the cavity.

[0017] In some embodiments, at least part of the structure of the fixed end portion protrudes from a side surface of the tray body provided with the first seal, and the part of the fixed end portion protruding from the tray body is welded with the tray body and forms a weld.

[0018] In some embodiments, the sleeve further comprises a plugging member, the plugging member is plugged at the end of the cavity opposite to the fixed end portion.

[0019] In some embodiments, the inner wall of the cavity is provided with a connecting thread, the outer wall of the closure member is provided with a mating thread, and the closure member is threadedly connected to the barrel portion via the connecting thread and the mating thread.

[0020] In some embodiments, at least one of the outer wall of the closure member and the inner wall of the cavity is provided with a sealing groove extending along the circumference of the cavity, and the sleeve further comprises a second sealing member embedded in the sealing groove.

[0021] In some embodiments, the mounting sink includes a support surface abutting the top cover in the height direction, the support surface is provided with a first glue groove filled with connecting glue, and the top cover is bonded to the support surface via the connecting glue.

[0022] In some embodiments, the first glue groove is a plurality of first glue grooves, and the plurality of first glue grooves are arranged at intervals along the first direction.

[0023] In some embodiments, the mounting sink further includes a limiting surface perpendicular to the opening direction, the limiting surface is spaced apart from the top cover and together defines a second glue groove, the second glue groove is filled with connecting glue, and the top cover is bonded to the limiting surface via the connecting glue.

[0024] In some embodiments, the tray body is further provided with a plurality of first connecting holes, the top cover is further provided with a second connecting hole, and the tray body and the top cover are connected by sequentially passing the second fastener through the first connecting hole and the second connecting hole.

[0025] In a second aspect, the application provides a battery pack comprising a battery pack housing and a battery set, wherein the battery set is arranged in the accommodating cavity.

[0026] In a third aspect, the application provides a power consumption device comprising a main body, a plurality of first fasteners, and the battery pack of the first aspect, wherein the plurality of first fasteners are respectively arranged in the plurality of lifting lugs to connect and fix the battery pack and the main body.

[0027] The battery pack housing provided by the application comprises a tray assembly and a first sealing member. The tray assembly comprises a tray body, a top cover, and a plurality of lifting lugs. The tray body defines an accommodating cavity with an opening at the top. The top cover covers the accommodating cavity. The plurality of lifting lugs are arranged on the tray body and located at least on opposite sides of the accommodating cavity. The lifting lugs are used to arrange the first fastener. The first sealing member is arranged at the top of the tray assembly and extends along the circumference of the accommodating cavity. At least part of the plurality of lifting lugs is located in the area enclosed by the first sealing member. In this way, the first fastener can be effectively prevented from being corroded and physically damaged by the outside world, the structural safety of the first fastener is improved, and the installation reliability of the battery pack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and the drawings can be obtained by those skilled in the art without making any creative effort based on the embodiments in the present application.

[0029] Fig. 1 is a structural schematic diagram of a battery pack provided by the embodiments of the present application;

[0030] Fig. 2 is a partial structural schematic diagram one of Fig. 1;

[0031] Fig. 3 is a structural schematic diagram of a blocking piece in Fig. 2;

[0032] Fig. 4 is a partial structural schematic diagram two of Fig. 1;

[0033] Fig. 5 is a local enlarged view of A in Fig. 4;

[0034] Fig. 6 is a schematic diagram of an electric device according to the embodiments of the present application.

[0035] Legend of reference signs: 10-battery pack; 101-battery pack shell; 100-tray assembly; 110-tray main body; 111-receiving cavity; 112-mounting counterbore; 1121-supporting surface; 1122-first glue groove; 1123-limiting surface; 1124-second glue groove; 113-first edge beam; 1131-assembly channel; 1132-mounting surface; 114-second edge beam; 120-top cover; 121-top surface; 130-lifting lug; 131-sleeve; 1311-connection hole; 1312-cylinder portion; 1313-fixed end portion; 1314-cavity; 1315-first cavity segment; 1316-second cavity segment; 133-blocking piece; 1331-first blocking segment; 1332-second blocking segment; 1333-sealing groove; 134-second sealing piece; 200-first fastener; 300-first sealing piece; 310-first sealing segment; 320-second sealing segment; 400-welding seam; 500-second fastener; 20-electric device. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more apparent and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative effort belong to the scope of protection of the present application.

[0037] In order to make the above objectives, characteristics 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 with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0038] An electric vehicle usually obtains power by using a battery pack. By using a battery pack in a cell to body (CTB) form, a battery system can be integrated into a vehicle body structure to improve the energy density and safety of the battery pack, and thus improve the endurance and performance of the electric vehicle.

[0039] In the related art, a sealing structure is usually arranged between a battery pack upper cover and a vehicle body structure bottom plate, and a fastener passes through a lifting lug structure of the battery pack to connect and fix the battery pack and the vehicle body structure bottom plate, so as to realize the sealing between the battery pack and the vehicle body structure. However, the current fastener is easily corroded or physically damaged by the outside world, resulting in damage to the fastener.

[0040] Therefore, the present application provides a battery pack shell, a battery pack and an electric device, which can ensure that the first fastener arranged in the lifting lug is located in the closed space defined by the tray assembly, the first sealing element and the vehicle body, effectively avoiding the first fastener from being corroded and physically damaged by the outside world, improving the structural safety of the first fastener, and ensuring the long-term stable operation and service life of the battery pack.

[0041] The battery pack shell 101 provided by the embodiments of the present application will be described in detail below with reference to FIGS. 1-5.

[0042] The battery pack shell 101 of the embodiments of the present application can include a tray assembly 100 and a first sealing element 300.

[0043] The tray assembly 100 can include a tray body 110, a top cover 120 and a plurality of lifting lugs 130, and the tray body 110 defines a containing cavity 111 having an opening at the top. Optionally, the opening periphery of the tray body 110 is provided with a mounting sunken platform 112, for example, the mounting sunken platform 112 can be arranged only on opposite sides of the tray body 110, or can surround the tray body 110. The top cover 120 can be embedded in the mounting sunken platform 112 and cover the containing cavity 111; or the top surface 121 of the tray body 110 can also be a plane, and the top cover 120 can be arranged on the top surface 121 of the tray body 110.

[0044] A plurality of lugs 130 are provided on the tray body 110 and are located at least on opposite sides of the receiving cavity 111. The lugs 130 can be used to connect the main body (e.g. the vehicle body) of the electric device and the first fastener 200. The battery pack 200 can be provided in the receiving cavity 111. A first seal 300 is provided on the top of the tray assembly 100 and extends along the circumference of the receiving cavity 111. At least some of the plurality of lugs 130 can be located in the area enclosed by the first seal 300. In other words, only some of the lugs 130 can be located in the area enclosed by the first seal 300, or all of the lugs 130 can be located in the area enclosed by the first seal 300. Accordingly, the first fastener 200 passing through the lugs 130 is also located in the area enclosed by the first seal 300. In this way, when the battery pack 10 is installed on the main body (e.g. the vehicle body) of the electric device, the first fastener 200 will be located in the sealed space defined by the tray body 110, the first seal 300 and the main body, thereby protecting the first fastener 200 from corrosion and physical damage from the outside environment, and ensuring the installation reliability and service life of the battery pack 10.

[0045] In a specific implementation, the tray assembly 100, as the basic support structure of the battery pack 10, can include the tray body 110 and the top cover 120. The tray body 110 defines a receiving cavity 111 with an opening at the top, thereby providing a safe and stable storage space for the battery pack 200.

[0046] The mounting boss 112 is provided around the opening of the tray body 110, so that the top cover 120 can be stably embedded on the tray body 110 and cover the receiving cavity 111, effectively preventing the external environment from affecting the battery pack 200.

[0047] Further, the tray assembly 100 further includes a plurality of lugs 130. Each lug 130 is stably mounted on the tray body 110 and is distributed at least on opposite sides of the receiving cavity 111.

[0048] It should be noted that the battery pack shell 101 is also provided with a first sealing member 300, which provides a guarantee for the sealing performance between the battery pack 10 and the electrical equipment. The first sealing member 300 is arranged at the top of the tray assembly 100 and extends along the circumference of the accommodating cavity 111 to achieve good sealing between the battery pack 10 and the electrical equipment. In addition, referring to FIG. 1, the first sealing member 300 is a continuous annular structure, each lug 130 is located in the area enclosed by the first sealing member 300, and the lug 130 is lower than the top end face of the first sealing member 300 in the height direction, so that each lug 130 and the first fastener 200 arranged in the lug 130 are located in the closed space defined by the tray assembly 100, the first sealing member 300 and the vehicle body, effectively avoiding the first fastener 200 being corroded and physically damaged by the outside world, improving the structural safety of the first fastener 200, and guaranteeing the long-term stable operation and service life of the battery pack 10.

[0049] It should also be noted that in the related art, the area of the top cover needs to be larger than the sealing range of the sealing structure to ensure the sealing effect between the battery pack and the electrical equipment, but the material cost of the top cover is relatively high, resulting in a relatively high overall cost of the battery pack. The battery pack 10 provided in the embodiment reduces the area of the top cover 120 relative to the area of the top cover in the related art by arranging the tray body 110, thereby reducing the cost.

[0050] Optionally, the lug 130 can protrude from the top surface of the tray body 110. In this way, each lug 130 can be stably connected to the corresponding connection point on the electrical equipment (such as the bottom plate of the vehicle body structure). Through each lug 130, the stability of the battery pack 10 during vehicle driving is enhanced, the installation and disassembly process of the battery pack 10 is simplified, and the work efficiency is improved.

[0051] In some embodiments, the tray body 110 includes a mounting surface 1132, the lug 130 is arranged on the mounting surface 1132, and the first sealing member 300 is attached to the mounting surface 1132 and the top surface 121 of the top cover 120. In this way, the installation stability of the first sealing member 300 can be ensured.

[0052] In some embodiments, along the height direction of the battery pack shell 101, the mounting surface 1132 and the top surface 121 are flush, so that the arrangement surface of the first sealing member 300 is more flat, which is beneficial to improve the installation stability of the first sealing member 300, and at the same time, the sealing performance of the closed space defined by the tray assembly 100, the first sealing member 300 and the vehicle body is improved, thereby better protecting the first fastener 200.

[0053] Referring to FIG. 1, in some embodiments, the tray body 110 includes two first side beams 113 opposite along a first direction and two second side beams 114 opposite along a second direction, the first direction being perpendicular to the second direction. A plurality of hangers 130 are respectively arranged on the two first side beams 113, in other words, the top surface 121 of the first side beam 113 can constitute the mounting surface 1132 mentioned above.

[0054] Wherein, referring to FIG. 1, the first direction corresponds to the X-axis direction in FIG. 1, and the second direction corresponds to the Y-axis direction in FIG. 1.

[0055] It can be understood that by arranging the first side beam 113 and the second side beam 114, a stable support frame is provided for the tray body 110.

[0056] Further, in order to realize reliable connection of the battery pack 10 and the electrical equipment (such as the bottom plate of the vehicle body structure) through the hanger 130, arranging each hanger 130 on the two first side beams 113 can make the force on the battery pack 10 more uniform, reducing the adverse effects on other parts of the tray body 110.

[0057] Referring to FIG. 4 and FIG. 5, in some embodiments, the mounting sink 112 is formed on the side edge of the first side beam 113 facing the accommodating cavity 111 along the first direction.

[0058] In this way, it is ensured that the top cover 120 can be stably embedded in the mounting sink 112, thereby effectively covering the accommodating cavity 111 and preventing adverse effects of the external environment on the battery pack 200.

[0059] Further, by arranging the mounting sink 112 and embedding the top cover 120 in the mounting sink 112, it is helpful to realize the close fit between the top cover 120 and the tray body 110.

[0060] In addition, when producing and processing the tray body 110, the mounting sink 112 is arranged on the first side beam 113, and then the top cover 120 is accurately embedded in the mounting sink 112. In this way, the production efficiency is improved, and the assembly process of the top cover 120 is simplified.

[0061] Referring to FIG. 1 and FIG. 5, in some embodiments, the height of the second side beam 114 along the height direction is adapted to the height of the mounting sink 112, the two side edges of the top cover 120 along the first direction are supported on the mounting sink 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.

[0062] Wherein, referring to FIG. 1, the height direction corresponds to the Z-axis direction in FIG. 1.

[0063] It should be noted that setting the height of the second side beam 114 in the height direction to be higher than the height of the mounting sink 112 will hinder the fit between the top cover 120 and the mounting sink 112; setting the height of the second side beam 114 in the height direction to be lower than the height of the mounting sink 112 will only support the top cover 120 on the mounting sink 112, affecting the structural rigidity of the top cover 120 and the sealing between the top cover 120 and the tray body 110. Therefore, the height of the second side beam 114 in the height direction is set to match the height of the mounting sink 112, facilitating the installation of the top cover 120.

[0064] It can be understood that when the top cover 120 is embedded, the two side edges of the top cover 120 in the first direction are supported on the mounting sink 112, and the second side beam 114 is matched with the mounting sink 112, so that the two side edges of the top cover 120 in 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, the stability of the top cover 120 under load is ensured, and the sealing between the top cover 120 and the tray body 110 is improved.

[0065] Referring to FIG. 1, in some embodiments, the side surface of the top cover 120 in the height direction away from the accommodating cavity 111 is flush with the end surface of the first side beam 113 in the height direction toward the opening. The first direction, the second direction, and the height direction are perpendicular to each other.

[0066] 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.

[0067] Referring to FIG. 1, in some embodiments, the first seal 300 includes two first sealing sections 310 opposite in the first direction and two second sealing sections 320 opposite in the second direction. The two first sealing sections 310 are respectively on the two first side beams 113, and each first sealing section 310 is located on the side of the hanger 130 on the first side beam 113 away from the accommodating cavity 111. The two ends of the two second sealing sections 320 are respectively connected with the two first sealing sections 310, and at least part of the structure of each second sealing section 320 is arranged on the top cover 120.

[0068] In a specific implementation, the first sealing member 300 includes two first sealing segments 310 arranged opposite to each other along a first direction, and each of the two first sealing segments 310 is installed on a first side beam 113 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 lug 130 on the first side beam 113 away from the accommodation cavity 111, thereby ensuring the tightness of the seal, so that each lug 130 is located within the sealing range of the first sealing member 300, effectively preventing the lug 130 from being corroded or physically damaged by the outside world, and improving the structural safety of the lug 130.

[0069] Further, in order to enhance the integrity and stability of the seal between the tray assembly 100 and the electrical equipment, the first sealing member 300 further includes two second sealing segments 320 arranged opposite to each other along a second direction. The two ends of the second sealing segment 320 are connected to the two first sealing segments 310, and the first sealing segment 310 and the second sealing segment 320 form a stable sealing structure.

[0070] In addition to the structure that the top surface of the first side beam 113 is flat, in other possible embodiments, the first side beam 113 can include a transverse segment and a longitudinal segment, wherein the transverse segment is located on the side of the longitudinal segment away from the accommodation cavity 111, and the top surface of the transverse segment is lower than the top surface of the longitudinal segment, and the top surface of the transverse segment constitutes the mounting surface 1132 of the tray body 110, and a plurality of lugs 130 can be arranged on the transverse segment. Correspondingly, the thickness of the first sealing segment 310 can be greater than the thickness of the second sealing segment 320, and the top surface of the first sealing segment 310 and the top surface of the second sealing segment 320 can be flush to facilitate sealing cooperation with the vehicle body. The thickness of the part of the first sealing segment 310 downwardly protruding beyond the second sealing segment 320 is adapted to the height difference between the top surface of the transverse segment and the top surface of the longitudinal segment, so that the bottom surface of the first sealing segment 310 can be in contact with the top surface of the transverse segment, thereby achieving connection. Correspondingly, at least part of the lugs 130 on the transverse segment can be located on the inner side of the first sealing segment 310, so as to ensure that the first sealing member 300 can better protect the first fastener 200 passing through the lug 130.

[0071] In some embodiments, the first sealing member 300 includes sealing foam. The sealing foam generally has a microporous structure, so that the sealing foam can deform when subjected to pressure, tightly fit between the tray assembly 100 and the electrical equipment, and effectively prevent the penetration of gas, liquid or small particles, thereby ensuring the tightness of the seal.

[0072] In addition, the sealing foam also has good resilience, so that the sealing foam can maintain stable sealing effect after being pressed for a long time or after experiencing multiple compressions. In this way, the service life of the first sealing member 300 is prolonged, and the maintenance cost caused by seal failure is reduced.

[0073] Of course, the present application is not limited thereto, and the first seal 300 can also be a rubber seal or other structure suitable as a sealing material.

[0074] Referring to FIG. 2, in some embodiments, the tray body 110 is provided with an assembly passage 1131 extending through the height direction of the battery pack shell 101. For example, the assembly passage 1131 can extend through the first side beam 113. The lug 130 can include a sleeve 131. The sleeve 131 is arranged in the assembly passage 1131, and the sleeve 131 defines a connecting hole 1311 extending in the height direction. In this way, the first fastener 200 can be arranged in the connecting hole 1311 and extend out of the side of the tray body 110 provided with the first seal 300.

[0075] To achieve the assembly of the lug 130, the first side beam 113 is provided with the assembly passage 1131 to achieve the connection of the lug 130 and the first side beam 113.

[0076] It should be noted that the lug 130 can include the sleeve 131. The sleeve 131 matches the assembly passage 1131 and is arranged in the assembly passage 1131 of the first side beam 113. In this way, the sleeve 131 can be prevented from loosening or deviating.

[0077] Further, to achieve the stable connection between the tray assembly 100 and the electrical equipment, the sleeve 131 defines the connecting hole 1311 extending in the height direction inside. In this way, the first fastener 200 can pass through the connecting hole 1311 and extend out of the side of the first side beam 113 provided with the first seal 300 to be connected with the electrical equipment. In this way, the first side beam 113 is firmly connected with the electrical equipment through the lug 130.

[0078] Referring to FIG. 2, in some embodiments, the sleeve 131 includes a barrel portion 1312 and a fixed end portion 1313. The fixed end portion 1313 is located at one end of the barrel portion 1312 in the height direction. The inside of the barrel portion 1312 is provided with a cavity 1314, and the end of the barrel portion 1312 opposite to the fixed end portion 1313 is open. The connecting hole 1311 extends through the fixed end portion 1313 and communicates with the cavity 1314. In this way, the first fastener 200 can pass through the connecting hole 1311 from the cavity 1314 and extend out of the side of the first side beam 113 provided with the first seal 300.

[0079] The cavity 1314 is arranged inside the barrel portion 1312 and communicates with the connecting hole 1311. In this way, a channel is provided for the arrangement of the first fastener 200, and the smoothness of the first fastener 200 during assembly is ensured.

[0080] In addition, the connecting hole 1311 penetrates the fixed end portion 1313 and communicates with the cavity 1314. This allows the first fastener 200 to pass through the connecting hole 1311 from the cavity 1314 and out of the side of the first edge beam 113 provided with the first sealing member 300 through the penetrating connecting hole 1311 to be connected to the electrical device.

[0081] Referring to FIG. 2, in some embodiments, at least part of the structure of the fixed end portion 1313 protrudes from the side surface of the tray body 110 provided with the first sealing member 300. The part of the fixed end portion 1313 protruding from the tray body 110 is welded to the tray body 110 and forms a weld 400.

[0082] Specifically, the fixed end portion 1313 does not completely embed in the interior of the first edge beam 113, but at least part of the structure protrudes from the side surface of the first edge beam 113 provided with the first sealing member 300. In this way, it is ensured that a more secure connection between the fixed end portion 1313 and the first edge beam 113 can be formed.

[0083] Further, in order to achieve a close connection between the fixed end portion 1313 and the first edge beam 113, the part of the fixed end portion 1313 protruding from the first edge beam 113 is welded to the first edge beam 113 to form a weld 400. In this way, the connection strength between the fixed end portion 1313 and the first edge beam 113 is enhanced, and the connection stability between the lug 130 and the first edge beam 113 is improved.

[0084] Referring to FIGS. 2 and 3, in some embodiments, the sleeve 131 can further include a plugging member 133 plugged at the end of the cavity 1314 opposite to the fixed end portion 1313.

[0085] It can be understood that by providing the plugging member 133, the end of the cavity 1314 opposite to the fixed end portion 1313 (i.e., the end of the cavity 1314 away from the connecting hole 1311) can be effectively closed. In this way, the entry of external impurities into the interior of the cavity 1314 is prevented, thereby protecting the integrity and functionality of the internal structure of the cavity 1314.

[0086] Referring to FIGS. 2 and 3, in some embodiments, the inner wall of the cavity 1314 is provided with a connecting thread, and the outer wall of the plugging member 133 is provided with a mating thread. The plugging member 133 and the barrel portion 1312 are threadedly connected through the connecting thread and the mating thread. In this way, the connection between the plugging member 133 and the barrel portion 1312 is simple and reliable, and easy to assemble and disassemble.

[0087] In a specific implementation, the blocking member 133 can be connected with the cavity 1314 by threadedly engaging the connecting thread with the mating thread, thereby blocking the cavity 1314.

[0088] It can be understood that the threaded connection has a certain self-locking and sealing property. By rotating the blocking member 133, the engagement depth between the mating thread and the connecting thread is increased, thereby achieving the close connection between the blocking member 133 and the cavity 1314 and the blocking of the cavity 1314. The self-locking property of the threaded connection ensures the stability of the connection between the blocking member 133 and the cavity 1314, and the sealing property of the threaded connection effectively prevents external impurities from entering the interior of the cavity 1314, thereby ensuring the sealing property of the internal environment of the sleeve 131.

[0089] Referring to FIGS. 2 and 3, in some embodiments, the cavity 1314 includes a first cavity segment 1315 and a second cavity segment 1316 sequentially away from the fixed end 1313 along the height direction, the inner diameter of the second cavity segment 1316 is greater than that of the first cavity segment 1315, thereby forming a shoulder structure at the connection between the first cavity segment 1315 and the second cavity segment 1316, and the blocking member 133 includes a first blocking segment 1331 and a second blocking segment 1332 sequentially arranged along the height direction, wherein the first blocking segment 1331 is located in the first cavity segment 1315, and the second blocking segment 1332 is located in the second cavity segment 1316 and abuts against the shoulder structure.

[0090] By setting the inner diameter of the second cavity segment 1316 to be greater than that of the first cavity segment 1315, a shoulder structure is formed at the connection between the first cavity segment 1315 and the second cavity segment 1316, thereby facilitating the positioning and sealing of the blocking member 133.

[0091] It can be understood that, in order to match the blocking member 133 with the shoulder structure, the blocking member 133 can include the first blocking segment 1331 and the second blocking segment 1332, and the first blocking segment 1331 and the second blocking segment 1332 are matched with the first cavity segment 1315 and the second cavity segment 1316, respectively, thereby ensuring that the blocking member 133 can block the cavity 1314.

[0092] Further, by tightly matching the first blocking segment 1331 with the first cavity segment 1315, the cavity 1314 is preliminarily sealed. The second blocking segment 1332 is located in the second cavity segment 1316 and tightly abuts against the shoulder structure, so that when the blocking member 133 is subjected to an external force, the stability of the position of the blocking member 133 can be maintained by the supporting action of the shoulder structure, and the sealing effect is further enhanced.

[0093] Referring to FIGS. 2 and 3, in some embodiments, the connecting thread is formed in the first cavity segment 1315, and the mating thread is formed in the first blocking segment 1331.

[0094] It can be understood that when the first plugging section 1331 is screwed into the first cavity section 1315, the interaction between the mating threads and the connecting threads generates a certain pre-tightening force, thereby realizing the connection of the plugging member 133 and the sleeve 131 and ensuring the sealing between the plugging member 133 and the sleeve 131. In addition, the threaded connection has good self-locking property and can resist loosening caused by external factors, thereby ensuring the stability of the connection of the plugging member 133 and the sleeve 131.

[0095] Referring to FIGS. 2 and 3, in some embodiments, at least one of the outer wall of the plugging member 133 and the inner wall of the cavity 1314 is provided with a sealing groove 1333 extending in the circumferential direction of the cavity 1314, and the sleeve 131 further includes a second sealing member 134 embedded in the sealing groove 1333.

[0096] To further improve the sealing between the plugging member 133 and the cavity 1314, a sealing groove 1333 is arranged between the outer wall of the plugging member 133 and the inner wall of the cavity 1314. For example, the sealing groove 1333 can be arranged on the outer wall of the plugging member 133, but the present embodiment is not limited thereto.

[0097] Then the second sealing member 134 is 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 structure with a certain elasticity, so that the second sealing member 134 deforms when subjected to pressure, thereby abutting between the outer wall of the plugging member 133 and the inner wall of the cavity 1314 to improve the sealing between the plugging member 133 and the cavity 1314.

[0098] Specifically, when the plugging member 133 is installed into the cavity 1314, the second sealing member 134 is deformed by being pressed, and the elastic force of the second sealing member 134 causes the second sealing member 134 to abut between the outer wall of the plugging member 133 and the inner wall of the cavity 1314, thereby effectively blocking external impurities from entering the cavity 1314.

[0099] Optionally, the inner side of the plugging member 133 defines a working groove, and the cross section of the working groove perpendicular to the axial direction of the sleeve 131 can be hexagonal or other shapes. When the plugging member 133 is assembled into the cavity 1314, a tool adapted to the cross-sectional shape of the working groove can be inserted into the working groove, and then the plugging member 133 is screwed into the cavity 1314 to complete the assembly.

[0100] Referring to FIGS. 4 and 5, in some embodiments, the mounting sink 112 comprises a supporting surface 1121 abutting the top cover 120 along the opening direction, the supporting surface 1121 is provided with a first glue groove 1122, and the first glue groove 1122 is filled with connecting glue, and the top cover 120 is bonded to the supporting surface 1121 through the connecting glue.

[0101] It can be understood that the mounting sink 112 can provide stable support for the installation of the top cover 120. Specifically, the mounting sink 112 is provided with the supporting surface 1121, which is in contact and abutment with the bottom surface of the top cover 120, thereby ensuring the stability of the top cover 120 during installation.

[0102] In order to improve the connection strength between the top cover 120 and the mounting sink 112, the supporting surface 1121 can be provided with the first glue groove 1122, and then the first glue groove 1122 is filled with connecting glue, and after the connecting glue is cured, the top cover 120 and the mounting sink 112 are tightly connected.

[0103] Optionally, the first glue groove 1122 is a plurality of, here, the plurality refers to two or more, and the plurality of first glue grooves 1122 are arranged along the width direction of the first edge beam 113. In this way, the installation stability of the top cover 120 can be improved, and the sealing performance of the accommodating cavity 111 can be improved.

[0104] Referring to FIGS. 4 and 5, in some embodiments, the mounting sink 112 further comprises a limiting surface 1123 perpendicular to the opening direction, the limiting surface 1123 is spaced apart from the top cover 120 and cooperatively defines 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.

[0105] In order to further improve the connection strength between the top cover 120 and the mounting sink 112, the mounting sink 112 can be further provided with the limiting surface 1123, and then the second glue groove 1124 is cooperatively defined by the spacing between the limiting surface 1123 and the top cover 120, the connecting glue is filled in the second glue groove 1124, and after the connecting glue is cured, the top cover 120 and the mounting sink 112 are tightly connected, so that the loosening of the top cover 120 relative to the mounting sink 112 can be avoided.

[0106] Referring to FIG. 1, in some embodiments, the tray body 110 is further provided with a plurality of first connecting holes, and the top cover 120 is further provided with a second connecting hole, and the tray body 110 and the top cover 120 are connected by the second fastener 500 passing through the first connecting hole and the second connecting hole in sequence.

[0107] In order to realize reliable connection between the tray body 110 and the top cover 120, the second fastener 500 can be used to connect the tray body 110 and the top cover 120. The second fastener 500 is sequentially threaded through the first connecting hole on the tray body 110 and the second connecting hole on the top cover 120, and then the second fastener 500 is tightened to stably connect the tray body 110 and the top cover 120. In this way, the overall stability of the tray assembly 100 is enhanced, effectively preventing the tray body 110 and the top cover 120 from loosening or separating due to vibration or external force.

[0108] On the basis of the above-mentioned embodiments, the embodiments of the present application provide a battery pack 10, which comprises the battery pack shell 101 in the above-mentioned embodiments and the battery pack 200. 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, and the stability and safety of the battery pack 200 during transportation and use are ensured. By arranging the battery pack 200, the battery pack 10 has the functions of power storage and output, and can provide power support for various electric devices. The battery pack 10 of the embodiments has the same effects as the battery pack shell 101 described above.

[0109] On the basis of the above-mentioned embodiments, with reference to FIG. 6, the embodiments of the present application provide a power-consuming device 20, which comprises the battery pack 10 in the above-mentioned embodiments.

[0110] The specific structure of the battery pack is described in detail in the above-mentioned embodiments, which will not be repeated here.

[0111] For example, the power-consuming device 20 can be a vehicle, such as a new energy vehicle, a pure electric vehicle, or a hybrid electric vehicle, and the embodiments of the present application are not limited thereto.

[0112] The power-consuming device 20 of the embodiments has the same effects as the battery pack described above, and the details will not be repeated here.

[0113] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0114] It should be noted that the embodiments referred to as “one embodiment”, “an embodiment”, “exemplary embodiment”, “some embodiments” and the like in the specification can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments that are explicitly or implicitly described.

[0115] In general, terminology can be understood at least in part from an ordinary sense of the corresponding terminology as would be understood by those of ordinary skill in the art to which the subject matter concerns when context permits. That is, a term should be interpreted as having a frequency based meaning whenever and wherever that meaning can reasonably be made.

[0116] It will be readily understood that the terms "on", "above", and "over", in the disclosure, should be interpreted in the broadest context to mean not only "directly on something", but also to include the meaning of "on something" with intermediate features or layers therebetween, and that "above" or "over" not only includes the meaning of "above" or "over something", but also can include the meaning of "above" or "over something" without intermediate features or layers therebetween (i.e., directly on something).

[0117] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack housing (101), characterized by, The application relates to a tray assembly (100) comprising: a tray body (110) defining a receiving cavity (111) having an opening at a top portion; a top cover (120) covering the receiving cavity (111); and a plurality of hangers (130) provided on the tray body (110) and located at least on opposite sides of the receiving cavity (111), the hangers (130) being configured to receive a first fastener (200); and a first seal (300) provided on a top portion of the tray assembly (100) and extending along a periphery of the receiving cavity (111), at least part of the plurality of hangers (130) being located within an area enclosed by the first seal (300). The tray body (110) comprises a mounting surface (1132) on which the hangers (130) are provided, and the first seal (300) is attached to the mounting surface (1132) and a top surface (121) of the top cover (120). The mounting surface (1132) and the top surface (121) are flush along a height direction of the battery pack housing (101).

2. The battery pack housing (101) according to claim 1, characterized in that, The tray body (110) comprises two first side beams (113) opposite to each other along a first direction, and top surfaces (121) of the first side beams (113) are configured as the mounting surface (1132) along the height direction.

3. The battery pack housing (101) according to claim 2, characterized in that, The plurality of hangers (130) are respectively provided on the two first side beams (113), and the first direction is perpendicular to the height direction.

4. The battery pack housing (101) according to claim 3, characterized in that The first side beams (113) are provided with mounting recesses (112) on side edges thereof facing the receiving cavity (111) along the first direction, and the top cover (120) is mounted on the mounting recesses (112). The tray body (110) further comprises two second side beams (114) opposite to each other along a second direction, and the height direction, the first direction and the second direction are perpendicular to each other in pairs; the second side beams (114) have a height matching that of the mounting recesses (112), the top cover (120) is supported on the mounting recesses (112) along two side edges thereof along the first direction, and the top cover (120) is supported on top portions of the second side beams (114) along two side edges thereof along the second direction.

5. The battery pack housing (101) according to claim 4, characterized in that, The first seal (300) comprises two first seal segments (310) opposite to each other along the first direction and two second seal segments (320) opposite to each other along the second direction, 6. The battery pack housing (101) according to claim 5, characterized in that The two first seal segments (310) are respectively located on the two first side beams (113), and each first seal segment (310) is located on a side of the hanger (130) on the first side beam (113) away from the receiving cavity (111); and 7. The battery pack housing (101 ) according to claim 6, characterized in that Two ends of the two second seal segments (320) are connected to the two first seal segments (310) respectively, and at least part of each second seal segment (320) is provided on the top cover (120). ​ ​ 8. The battery pack housing (101 ) according to any one of claims 1 -7, characterized in that, The first seal (300) comprises a sealing foam.

9. The battery pack housing (101 ) according to any one of claims 1 -8, characterized in that, The tray body (110) is provided with an assembly channel (1131) penetrating along a height direction of the battery pack shell (101), and the lug (130) comprises: a sleeve (131) penetrating the assembly channel (1131), the sleeve (131) defining a connecting hole (1311) extending along the height direction.

10. The battery pack housing (101 ) according to claim 9, characterized in that The sleeve (131) comprises a barrel portion (1312) and a fixed end portion (1313) located at one end of the barrel portion (1312) along the height direction, an inner side of the barrel portion (1312) is provided with a cavity (1314), and an opposite end of the barrel portion (1312) to the fixed end portion (1313) is open, the connecting hole (1311) penetrates the fixed end portion (1313) and communicates with the cavity (1314).

11. The battery pack housing (101) according to claim 10, characterized in that At least part of the fixed end portion (1313) protrudes from a side surface of the tray body (110) provided with the first seal (300), The part of the fixed end portion (1313) protruding from the tray body (110) is welded with the tray body (110) and forms a weld (400).

12. The battery pack housing (101) of claim 10, characterized in that, The sleeve (131) further comprises a plugging piece (133) plugged at an end of the cavity (1314) opposite to the fixed end portion (1313).

13. The battery pack housing (101 ) according to claim 12, characterized in that An inner wall of the cavity (1314) is provided with a connecting thread, and an outer wall of the plugging piece (133) is provided with a matching thread, the plugging piece (133) and the barrel portion (1312) are threadedly connected through the connecting thread and the matching thread.

14. The battery pack housing (101) of claim 12, characterized in that, At least one of the outer wall of the plugging piece (133) and the inner wall of the cavity (1314) is provided with a sealing groove (1333) extending along a circumference of the cavity (1314), The sleeve (131) further comprises a second seal (134) embedded in the sealing groove (1333).

15. The battery pack housing (101 ) according to any one of claims 5-7, characterized in that, The mounting sink (112) comprises a support surface (1121) abutting the top cover (120) along the height direction, the support surface (1121) is provided with a first glue groove (1122), the first glue groove (1122) is filled with connecting glue, and the top cover (120) is bonded with the support surface (1121) through the connecting glue.

16. The battery pack housing (101 ) according to claim 15, characterized in that The first glue groove (1122) is a plurality of first glue grooves (1122) arranged at intervals along the first direction.

17. The battery pack housing (101) of claim 15, characterized in that, The mounting sink (112) further comprises a limiting surface (1123) perpendicular to the opening direction, the limiting surface (1123) is spaced apart from the top cover (120) and jointly defines a second glue groove (1124), the second glue groove (1124) is filled with connecting glue, and the top cover (120) is bonded with the limiting surface (1123) through the connecting glue.

18. The battery pack housing (101 ) according to any one of claims 1 - 17, characterized in that, The tray body (110) is further provided with a plurality of first connecting holes (1311), the top cover (120) is further provided with second connecting holes (1311), and the tray body (110) and the top cover (120) are connected by sequentially penetrating the first connecting holes (1311) and the second connecting holes (1311) by the second fasteners (500).

19. A battery pack (10) characterized by, The battery pack (10) comprises a battery pack and the battery pack housing (101) of any one of claims 1-18, wherein the battery pack is arranged in the accommodating cavity (111).

20. An electrical device (20) characterized by: The battery pack (10) comprises a main body, a plurality of first fasteners (200), and the battery pack (10) of claim 19, wherein the plurality of first fasteners (200) are respectively arranged in the plurality of lugs (130) to connect and fix the battery pack (10) and the main body.

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