A housing assembly, a battery pack, and an electrical device

Abstract

The present application relates to the technical field of energy storage devices, and provides a housing assembly, a battery pack, and an electrical device. The housing assembly includes a first housing, a first connecting member, and a second connecting member. The first housing is provided with a first hole. The first connecting member includes a first structural member and a second structural member covering the first structural member. The first structural member includes a first through hole, and the second structural member includes a second through hole. The second through hole communicates with the first through hole and the first hole respectively, and the first through hole and the first hole are arranged in sequence along a first direction. The second connecting member is connected to the first housing and the first connecting member, and a part of the second connecting member is disposed in the first through hole, the second through hole, and the first hole. The first structural member includes a first part, and the first part is located between the second connecting member and the second structural member, and the second structural member is not directly connected to the second connecting member. When the first connecting member rotates relative to the first housing, the first structural member is in direct contact with the second connecting member, reducing the wear of the second structural member, thereby improving the service life of the first connecting member.

Description

Technical Field

[0001] This application relates to the technical field of energy storage devices, and particularly to a housing assembly, a battery pack, and an electrical device.

Background Art

[0002] In recent years, with the development of new energy technologies, batteries, as highly efficient, clean, and highly recyclable energy sources, have been increasingly widely used. Some electrical devices (such as shared bicycles, shared electric vehicles, etc.) often need to replace the battery pack, and a handle is provided on the battery pack to facilitate the user to lift it. Currently, the handle of the battery pack will be worn during use, and the handle may be damaged during the use of the battery pack, resulting in the battery pack falling, which cannot ensure the reliability of the battery pack during use.

Summary of the Invention

[0003] To improve the above technical problems, embodiments of this application provide a housing assembly, a battery pack, and an electrical device, which can improve the problem of handle wear.

[0004] Embodiments of this application solve their technical problems by adopting the following technical solutions:

[0005] In a first aspect, a housing assembly is provided, including: a first housing, a first connecting member, and a second connecting member. The first housing includes a first hole. The first connecting member includes a first structural member and a second structural member. The second structural member covers the first structural member. The first structural member includes a first through hole, and the second structural member includes a second through hole. The second through hole communicates with the first through hole and the first hole respectively. The first through hole and the first hole are arranged in sequence along a first direction. The second connecting member connects the first connecting member and the first housing, and the second connecting member is rotatably connected to the first connecting member. The second connecting member is partially disposed in the first through hole, the second through hole, and the first hole. The first structural member includes a first part, and along the first direction, the first part is located between the second connecting member and the second structural member. When the first connecting member rotates relative to the first housing around the second connecting member, direct contact between the first structural member and the second connecting member reduces the wear of the second structural member, thereby ensuring the overall strength of the first connecting member and improving the service life of the first connecting member.

[0006] In some embodiments, the first structural member includes a first portion, a second portion, and a third portion that are sequentially connected. The first portion and the third portion are disposed at two ends of the second portion. The first portion and the third portion are respectively bent relative to the second portion. The first through hole is disposed in the first portion. The second structural member includes a fourth portion, a fifth portion, and a sixth portion that are sequentially connected. The fourth portion covers the first portion, the fifth portion covers the fourth portion, and the sixth portion covers the third portion. The second through hole is disposed in the fourth portion.

[0007] In some embodiments, a first recess is provided on the first housing. The first recess is used to receive the first connecting member. The first recess includes a first wall and a second wall that are oppositely disposed along the first direction. The first hole extends from the first wall toward the second wall.

[0008] In some embodiments, a first boss is provided on the first wall, and a second boss is provided on a surface of the fourth portion facing the first wall. When the first connecting member rotates relative to the first housing, the first boss abuts against the second boss.

[0009] In some embodiments, along the second direction, there is an offset distance between the center of the first boss and the axis of the first hole. Wherein, the second direction is perpendicular to the first direction.

[0010] In some embodiments, when the first connecting member is received in the first recess, a gap is formed between the fourth portion and the first wall.

[0011] In some embodiments, the second structural member further includes a first extension hole that extends from the second through hole in a direction away from the first hole. Along the first direction, the projection of the first portion and the projection of the first extension hole overlap. In some embodiments, when viewed along the first direction, the first portion includes a first region located in the first extension hole, and the second connecting member abuts against the first region.

[0012] In some embodiments, the second connecting member includes a first connecting section, a second connecting section, and a third connecting section. The first connecting section is disposed in the first hole, the second connecting section is disposed in the second through hole and the first through hole, and the third connecting section is disposed outside the first through hole. The surface of the third connecting section is connected to the first region.

[0013] In some embodiments, when viewed along a first direction X, the first portion of the first structural member includes a first region located within the first extension hole, the first through hole is disposed within the first extension hole, and the first hole is located within the second through hole. In some embodiments, the structural strength of the first structural member is greater than the structural strength of the second structural member. Preferably, the first structural member is made of metal, and / or the second structural member is made of plastic, and the structure is formed integrally through an injection molding process.

[0014] In a second aspect, a battery pack is provided, comprising: a housing and a cell assembly. The housing comprises a second housing and any of the housing assemblies described above, the second housing being connected to the first housing to form a receiving cavity, and the cell assembly being disposed within the receiving cavity.

[0015] In a third aspect, an electrical device is provided, comprising: a housing and a battery cell assembly. The housing comprises a second housing and any of the housing assemblies described above, the second housing being connected to the first housing to form a receiving cavity, the battery cell assembly being disposed within the receiving cavity and configured to provide electrical energy to the electrical device.

[0016] Compared with the prior art, in an embodiment of the present application, the second structural member is covered on the outside of the first structural member, the first part of the first structural member is located between the second connecting member and the second structural member, the second structural member is not directly connected to the second connecting member, and when the first connecting member rotates around the second connecting member relative to the first shell, the first structural member is in direct contact with the second connecting member, thereby reducing the wear of the second structural member, thereby ensuring the overall strength of the first connecting member and improving the service life of the first connecting member.

Brief Description of the Drawings

[0017] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 A schematic structural diagram of a housing assembly provided in one embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic structural diagram of the first shell of the shell assembly shown;

[0020] Figure 3 for Figure 2 A structural schematic diagram of the first shell from another perspective is shown;

[0021] Figure 4 for Figure 1Schematic diagram of the first connecting member of the housing assembly shown;

[0022] Figure 5 is Figure 4 Exploded view of the first connecting member shown;

[0023] Figure 6 is Figure 1 Cross-sectional view of the first housing and the first connecting member of the housing assembly shown;

[0024] Figure 7 is Figure 6 Enlarged view of area A of the first housing and the first connecting member shown;

[0025] Figure 8 is Figure 6 Enlarged view of area B of the first housing and the first connecting member shown;

[0026] Figure 9 is Figure 1 Schematic diagram of the second connecting member of the housing assembly shown;

[0027] Figure 10 is Figure 1 Cross-sectional view of the housing assembly shown;

[0028] Figure 11 is Figure 10 Enlarged view of area C of the housing assembly shown;

[0029] Figure 12 is Figure 10 Enlarged view of area D of the housing assembly shown;

[0030] Figure 13 is Figure 1 Schematic diagram of the housing assembly from another perspective shown;

[0031] Figure 14 is Figure 13 Enlarged view of area E of the housing assembly shown;

[0032] Figure 15 is Figure 1 Schematic diagram of the housing assembly in another state shown;

[0033] Figure 16 is Figure 1 Schematic diagram of the first housing of the housing assembly shown;

[0034] Figure 17 is Figure 14 Enlarged view of area F of the first housing shown;

[0035] Figure 18 is Figure 1Schematic diagram of the first connector of the housing assembly shown;

[0036] Figure 19 is Figure 16 Enlarged view of the G part of the first connector shown;

[0037] Figure 20 is is Figure 2 Schematic diagram of another perspective of the first housing shown;

[0038] Figure 21 is Figure 16 Exploded view of the first connector shown;

[0039] Figure 22 Schematic diagram of a battery pack provided by another embodiment of the present application.

Detailed implementation manners

[0040] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are only for the purpose of illustration.

[0041] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not used to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0042] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0043] One embodiment of the present application provides a housing assembly for a battery pack. The housing assembly includes a first housing, a first connecting member, and a second connecting member. The second connecting member is respectively connected to the first housing and the first connecting member, and the first connecting member is rotatable relative to the first housing. The first housing includes a first hole. The first connecting member includes a first structural member and a second structural member. The first structural member includes a first through hole, and the second structural member includes a second through hole. The second through hole communicates with the first through hole and the first hole respectively. The second connecting member connects the first structural member and the first housing, and the first connecting member is rotatably connected to the second connecting member. The second connecting member is partially disposed in the first through hole, the second through hole, and the first hole. The first structural member includes a first portion, and along a first direction, the first portion is disposed between the second connecting member and the second structural member. Optionally, the first through hole, the second through hole, and the first hole are sequentially arranged along the first direction.

[0044] Please refer to Figures 1 to 3 , a first recess 11 is provided on the first housing 10. The first recess 11 extends along a second direction Y from a surface of the first housing 10. The first recess 11 can be used to receive the first connecting member 20. The first recess 11 is generally U-shaped. The first recess 11 includes a first wall 110 and a second wall 112 that are oppositely arranged along a first direction X. Along the first direction X, a first hole 12 is provided on the first wall 110. The first hole 12 extends from the first wall 110 towards the second wall 112. Along a direction opposite to the first direction X, a second hole 13 is provided on the second wall 112. The second hole 13 extends from the second wall 112 towards the first wall 110. The first recess 11 further includes a third wall 114 arranged along the second direction Y. When the first connecting member 20 is received in the first recess 11, it abuts against the third wall 114. Wherein, the first direction X and the second direction Y are perpendicular to each other. Optionally, along the first direction X, the first hole 12 does not penetrate the first wall 110, which is beneficial to enhancing the connection strength between the first connecting member 20 and the first housing 10. Optionally, along a direction opposite to the first direction X, the second hole 13 does not penetrate the second wall 112, which is beneficial to enhancing the connection strength between the first connecting member 20 and the first housing 10.

[0045] Please refer to Figures 3 to 5 , the first connecting member 20 is rotatably connected to the first housing 10, and the first connecting member 20 can be rotated relative to the first housing 10 into the first recess 11. The first connecting member 20 includes a first outer surface 20a and a second outer surface 20b that are oppositely arranged. When the first connecting member 20 is received in the first recess 11, the first outer surface 20a abuts against the third wall 114, and the second outer surface 20b is not higher than the surface of the first housing 10 to reduce damage during dropping.

[0046] The first connecting member 20 is generally U-shaped, and the first connecting member 20 includes a first section 201, a second section 202, and a third section 203 that are connected in sequence. The first section 201 and the third section 203 are disposed at two ends of the second section 202, and the first section 201 and the third section 203 are bent relative to the second section 202 respectively. The first section 201 is disposed on a side of the first wall 110 away from the second wall 112, and a first through hole 210 and a second through hole 220 are provided at an end of the first section 201 away from the second section 202. The third section 203 is disposed on a side of the second wall 112 away from the first wall 110, and a third through hole 212 and a fourth through hole 222 are provided at an end of the third section 203 away from the second section 202.

[0047] Please refer to Figures 5 to 8 , the first connecting member 20 includes a first structural member 21 and a second structural member 22, and the second structural member 22 is coated on the first structural member 21. The first structural member 21 is generally U-shaped, and the first structural member 21 includes a first part 201a, a second part 202a, and a third part 203a that are connected in sequence. The first part 201a and the third part 203a are disposed at two ends of the second part 202a, and the first part 201a and the third part 203a are bent relative to the second part 202a respectively. The second structural member 22 includes a fourth part 201b, a fifth part 202b, and a sixth part 203b that are connected in sequence. The fourth part 201b of the second structural member 22 is coated on the first part 201a of the first structural member 21, the fifth part 202b of the second structural member 22 is coated on the second part 202a of the first structural member 21, and the sixth part 203b of the second structural member 22 is coated on the third part 203a of the first structural member 21.

[0048] The first part 201a of the first structural member 21 is provided with a first through hole 210, the fourth part 201b of the second structural member 22 is provided with a second through hole 220, and the first through hole 210, the second through hole 220, and the first hole 12 are sequentially arranged along the first direction X. The second through hole 220 is disposed between the first through hole 210 and the first hole 12, and the second through hole 220 communicates with the first through hole 210 and the first hole 12 respectively. The third part 203a of the first structural member 21 is provided with a third through hole 212, the sixth part 203b of the second structural member 22 is provided with a fourth through hole 222, the second hole 13, the fourth through hole 222, and the third through hole 212 are sequentially arranged along the first direction X, the fourth through hole 222 is disposed between the third through hole 212 and the second hole 13, and the fourth through hole 222 communicates with the third through hole 212 and the second hole 13 respectively. Optionally, the aperture of the first through hole 210 is not less than the aperture of the second through hole 220, and the aperture of the first hole 12 is smaller than the aperture of the second through hole 220, which is beneficial to the second connecting member 30 to fixedly connect the first structural member 21 and the first housing 10. Optionally, the aperture of the third through hole 212 is not less than the aperture of the fourth through hole 222, and the aperture of the second hole 13 is smaller than the aperture of the fourth through hole 222, which is beneficial to the second connecting member 30 to fixedly connect the first structural member 21 and the first housing 10.

[0049] Please refer to Figures 9 to 12 , the second connecting member 30 includes a first connecting section 31, a second connecting section 32, and a third connecting section 33 that are sequentially connected, and the diameters of the first connecting section 31, the second connecting section 32, and the third connecting section 33 increase in sequence. One end of the second connecting section 32 facing the first connecting section 31 is provided with a first surface 301, and one end of the third connecting section 33 facing the second connecting section 32 is provided with a second surface 302. Among them, the second connecting member 30 is made of a metal material, which can improve the connection strength between the first connecting member 20 and the first housing 10. Optionally, the second connecting member 30 includes a bolt.

[0050] The number of the second connecting members 30 is two, and one of the second connecting members 30a is connected between the first section 201 of the first connecting member 20 and the first housing 10, and the other second connecting member 30b is connected between the third section 203 of the first connecting member 20 and the first housing 10.

[0051] The second connecting member 30a, the third connecting section 33, the second connecting section 32, and the first connecting section 31 are sequentially connected along the first direction X. The first connecting section 31 is disposed within the first hole 12, thereby connecting the second connecting member 30a to the first housing 10. The second connecting section 32 is disposed between the second through-hole 220 and the first through-hole 210, with its first surface 301 abutting the first housing 10. The third connecting section 33 is disposed outside the first through-hole 210, and its second surface 302 is connected to the first portion 201a of the first structural member 21. In one embodiment, the second surface 302 may contact and connect to the first portion 201a of the first structural member 21. The diameter of the second connecting section 32 is smaller than that of the first through-hole 210, allowing the first connecting member 20 to rotate relative to the first housing 10 about the second connecting section 32.

[0052] The first connecting section 31, second connecting section 32, and third connecting section 33 of the second connecting member 30b are sequentially connected along the first direction X. The first connecting section 31 is connected within the second hole 13, thereby connecting the second connecting member 30b to the first housing 10. The second connecting section 32 is sequentially disposed within the fourth through hole 222 and the third through hole 212, with its first surface 301 abutting the first housing 10. The third connecting section 33 is disposed outside the third through hole 212, with its second surface 302 abutting the third portion 203a of the first structural member 21. The diameter of the second connecting section 32 is smaller than that of the third through hole 212, allowing the first connecting member 20 to rotate relative to the first housing 10 about the second connecting section 32 of the second connecting member 30.

[0053] In some embodiments, the first housing 10 further includes a first fastener 101 disposed in the first hole 12. One end of the first fastener 101 is fixed within the first hole 12, and the other end of the first fastener 101 protrudes from the first wall 110. The first fastener 101 defines a first screw hole 1010 along the first direction X. The first connecting section 31 of the second connecting member 30a is disposed within the first screw hole 1010. The first screw hole 1010 and the first connecting section 31 are threadedly connected, and the first surface 301 abuts against the end of the first fastener 101 facing away from the first hole 12. It will be appreciated that in other embodiments, the first housing 10 and the first connecting member 30a may be connected by other means, such as bonding, welding, riveting, etc., which are not limited herein.

[0054] In some embodiments, the first housing 10 further includes a second fastener 102 disposed in the second hole 13. One end of the first fastener 102 is fixed within the second hole 13, and the other end of the second fastener 102 protrudes from the second wall 112. The second fastener 102 is provided with a second threaded hole 1020 along a direction opposite to the first direction X. The first connecting section 31 of the second connecting member 30b is disposed within the second threaded hole 1020, and the second threaded hole 1020 and the first connecting section 31 are connected by a threaded fit. The first surface 301 abuts against the end of the second fastener 102 facing away from the second hole 13. It can be understood that in some other embodiments, the first housing 10 and the second connecting member 30b may also be connected by other means, such as bonding, welding, riveting, etc., which are not limited herein.

[0055] Please refer to Figures 11 to 14 , in some embodiments, the second structural member 22 is further provided with a first extension hole 224. The first extension hole 224 is disposed in the fourth portion 201b of the second structural member 22, and the first extension hole 224 extends in a direction away from the first hole 12 from the second through hole 220. The aperture of the first extension hole 224 is larger than that of the first through hole 210, and the aperture of the first extension hole 224 is larger than that of the second through hole 220. When observed along the first direction X, the first portion 201a of the first structural member 21 includes a first region 2010 exposed in the first extension hole 224. The first through hole 210 is disposed within the first extension hole 224 and is in communication with the first extension hole 224. The first hole 12 is located within the second through hole 220, and the first region 2010 surrounds the first through hole 210. The third connecting section 33 of the second connecting member 30a is disposed within the first extension hole 224, and the third connecting section 33 abuts against the first region 2010. Specifically, the second surface 302 is connected to the first region 2010.

[0056] In some embodiments, the second structural member 22 is further provided with a second extension hole 226. The second extension hole 226 is disposed in the sixth portion 203b of the second structural member 22, and the second extension hole 226 extends in a direction away from the second hole 13 from the fourth through hole 222. The aperture of the second extension hole 226 is larger than that of the third through hole 212, and the aperture of the second extension hole 226 is larger than that of the fourth through hole 222. When observed along a direction opposite to the first direction X, the third portion 203a of the first structural member 21 includes a second region 2030 exposed in the second extension hole 226. The third through hole 212 is disposed within the second extension hole 226 and is in communication with the second extension hole 226. The second hole 13 is located within the fourth through hole 222, and the second region 2030 surrounds the third through hole 212. The third connecting section 33 of the second connecting member 30b is disposed within the second extension hole 226, and the third connecting section 33 abuts against the second region 2030. Specifically, the second surface 302 is connected to the second region 2030..

[0057] Please refer to Figure 15 together. In some embodiments, a first abutting surface 204 is provided on a surface of the fourth part 201b of the second structural member 22 facing the first wall 110, and a second abutting surface 206 is provided on a surface of the sixth part 203b of the second structural member 22 facing the second wall 112. When the first connecting member 20 is in a non-use state and can be received in the first recess 11 (as shown in Figure 1 ), along the first direction X, a first gap is formed between the first abutting surface 204 and the first wall 110, and a second gap is formed between the second abutting surface 206 and the second wall 112, so as to facilitate the rotation of the first connecting member 20 relative to the first housing 10. When the first connecting member 20 is in a use state, the second section 202 can be lifted (as shown in Figure 15 ), so that the first connecting member 20 rotates to a position where the first section 201 and the third section 203 are substantially perpendicular to the first direction X; under the pulling force of the first housing 10, the first gap and the second gap enable the first section 201 and the third section 203 to have an elastic deformation space, and the first section 201 and the third section 203 contract and deform, so that the first abutting surface 204 and the second abutting surface 206 respectively abut against the first wall 110 and the second wall 112, and the first section 201 and the third section 203 form a force arm to clamp the first housing 10, so as to facilitate the first connecting member 20 to lift the first housing 10.

[0058] Please refer to Figures 16 to 19 together. In some embodiments, a first boss 14 is provided on the first wall 110 of the first housing 10, and the first boss 14 protrudes from the first wall 110 in a direction away from the second wall 112. A second boss 228 is provided on the first abutting surface 204 of the first connecting member 20, and the second boss 228 protrudes from the first abutting surface 204 in a direction facing the first wall 110, and the position of the second boss 228 corresponds to the position of the first boss 14. When the first connecting member 20 rotates relative to the first housing 10, the first boss 14 and the second boss 228 come into contact and are in interference fit, so that a gap can be maintained between the first wall 110 and the first abutting surface 204 during the rotation process, thereby restricting the first section 201 of the first connecting member 20 from clamping the first housing 10 when deforming, and improving the use reliability. When the first connecting member 20 rotates to a use state, the second boss 228 is separated from the first boss 14, so that the first section 201 can deform to abut against the first wall 110.

[0059] Furthermore, the raised heights of both sides of the first boss 14 increase toward the middle, and a first bevel 410 is formed on both sides of the first boss 41. The raised heights of both sides of the second boss 228 increase toward the middle, so that a second bevel 2280 is formed on both sides of the second boss 228. When the second boss 228 rotates relative to the first boss 14, the second bevel 2280 first contacts and transitions with the first bevel 410, allowing the first boss 14 and the second boss 228 to transition from a clearance fit to an interference fit, thereby enabling the first boss 14 and the second boss 228 to be cut in or pushed out, thereby improving the wear resistance and service life of the product. The raised height of the first boss 14 is the distance from the end of the first boss 14 facing away from the first wall 110 to the first wall 110, and the raised height of the second boss 228 is the distance from the end of the second boss 228 facing away from the first abutting surface 204 to the first abutting surface 204.

[0060] Please also refer to Figure 20 Furthermore, along the second direction Y, the first boss 14 is spaced apart from the first hole 12, with an offset distance d being provided between the center of the first boss 14 and the axis of the first hole 12. Along the second direction Y, the distance between the center of the first boss 14 and the third wall 114 is greater than the distance between the axis of the first hole 12 and the third wall 114. When the first connector 20 is received in the first recess 11, the second boss 228 is disposed on the side of the first boss 14 facing the third wall 114. The first boss 14 can limit the second boss 228 to restrict rotation of the first connector 20 when not in use.

[0061] In some embodiments, a third boss (not shown) is further provided on the second wall 112 of the first housing 10, and a fourth boss (not shown) is further provided on the second abutting surface 206 of the first connector 20. The position of the fourth boss corresponds to that of the third boss. The structure of the third boss is identical to that of the first boss 14, and the structure of the fourth boss is identical to that of the second boss 228, and thus will not be further described here.

[0062] Please refer back to Figure 16 In some embodiments, the first housing 10 further includes a second recess 16 extending from the third wall 114 of the first recess 11 along the second direction Y. The position of the second recess 16 corresponds to the position of the second section 202 , and the second recess 16 serves as a clearance structure to facilitate lifting of the first connector 20 .

[0063] Please refer back to Figure 18, in some embodiments, the first connecting member 20 is further provided with an extension block 24. The extension block 24 is disposed on the side of the fifth portion 202b of the second structural member 22 facing the second surface, and the extension block 24 extends from the fifth portion 202b towards the first housing 10. When the first connecting member 20 is disposed in the first recess 11, the extension block 24 is disposed on the side of the second section 202 away from the third wall 114, and the extension block 24 is used to facilitate pulling the first connecting member 20.

[0064] Please refer to Figure 21 , in this embodiment, the first structural member 21 and the second structural member 22 of the first connecting member 20 are made of different materials. Optionally, the structural strength of the first structural member 21 is greater than that of the first connecting member 20. For example, the first structural member 21 can be made of metal materials such as stainless steel, aluminum alloy, and copper alloy, and the second structural member 22 can be made of plastic materials such as polyethylene, polypropylene, polyester, and polyurethane. The first structural member 21 is formed into a U-shaped metal insert by stamping, and the second structural member 22 is injection-molded to cover the outside of the first structural member 21. The overall injection molding scheme with a stainless steel insert is adopted in this embodiment, which can enhance the strength and impact resistance of the overall component. In other embodiments, the second structural member 22 is fixed to the first structural member 21 by means of installation, such as snap-fastening.

[0065] Furthermore, a plurality of fixing holes 214 are provided on the first structural member 21, and the plurality of fixing holes 214 penetrate through the first structural member 21 respectively. The plurality of fixing holes 214 can be evenly distributed on the first structural member 21, and the plurality of fixing holes 214 are used to connect with the second structural member 22. When the second structural member 22 is injection-molded, part of the injection molding material enters the plurality of fixing holes 214 to increase the bonding force between the second structural member 22 and the first structural member 21, so as to improve the strength of the first connecting member 20.

[0066] Furthermore, at least one positioning notch 216 is provided on the first structural member 21, and the at least one positioning notch 216 is used for positioning with the second structural member 22. When the second structural member 22 is injection-molded, the first structural member 21 is disposed in the injection mold, and the at least one positioning notch 216 is aligned with the positioning structure of the injection mold to ensure the accurate position between the injection-molded second structural member 22 and the first structural member 21.

[0067] Compared with the prior art, in this embodiment, the first portion 201a of the first structural member 21 is located between the second connecting member 30 and the second structural member 22, and the second structural member 22 is not directly connected to the second connecting member 30. When the first connecting member 20 rotates relative to the first housing 10 around the second connecting member 30, the first structural member 21 made of metal material is in direct contact with the second connecting member 30 made of metal material to improve the wear resistance and service life of the first connecting member 20.

[0068] Please refer toFigure 22 , Another embodiment of the present application provides a battery pack 400, which includes a housing and a battery cell assembly 300 housed in the housing. The housing includes a second housing 200 and the housing assembly 100 in any of the above embodiments. The second housing 200 is connected to the first housing 10 of the housing assembly 100 and encloses to form a receiving cavity, and the battery cell assembly 300 is housed in the receiving cavity.

[0069] Another embodiment of the present application further provides an electrical device (not shown in the figure), which includes a housing and a battery cell assembly housed in the housing. The housing includes a second housing and the housing assembly 100 in any of the above embodiments. The second housing is connected to the first housing 10 of the housing assembly 100 and encloses to form a receiving cavity, and the battery cell assembly is housed in the receiving cavity. The battery cell assembly is used to provide electrical energy for the electrical device. Among them, the electrical device can be a device that uses a battery such as a vehicle, a ship, an aircraft, an energy storage device, a low-handheld power tool, etc.

[0070] 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; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above. For the sake of brevity, they are not provided in detail; although 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 modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these 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 housing assembly, characterized in that, Comprising: A first housing, the first housing including a first hole; A first connecting member, the first connecting member including a first structural member and a second structural member, the second structural member covering the first structural member, the first structural member including a first through hole, the second structural member including a second through hole, the second through hole respectively communicating with the first through hole and the first hole, the first through hole and the first hole being arranged in sequence along a first direction; and A second connecting member, the second connecting member connecting the first connecting member and the first housing, the second connecting member rotatably connecting the first connecting member, and the second connecting member being partially disposed in the first through hole, the second through hole and the first hole; The first structural member includes a first portion, along the first direction, the first portion being located between the second connecting member and the second structural member, the structural strength of the first structural member being greater than that of the second structural member, the second connecting member being fixed to the first housing, and the first portion being rotatable relative to the second connecting member.

2. The housing assembly according to claim 1, wherein: The first structural member includes a first portion, a second portion and a third portion connected in sequence, the first portion and the third portion being disposed at both ends of the second portion, the first portion and the third portion being bent relative to the second portion respectively, and the first through hole being disposed in the first portion; The second structural member includes a fourth portion, a fifth portion and a sixth portion connected in sequence, the fourth portion covering the first portion, the fifth portion covering the fourth portion, the sixth portion covering the third portion, and the second through hole being disposed in the fourth portion.

3. The housing assembly according to claim 2, wherein: A first recess is provided on the first housing, and the first recess is used for receiving the first connecting member; The first recess includes a first wall and a second wall oppositely arranged along the first direction, and the first hole extends from the first wall towards the second wall.

4. The housing assembly according to claim 3, wherein A first boss is provided on the first wall, and a second boss is provided on a surface of the fourth portion facing the first wall; When the first connecting member rotates relative to the first housing, the first boss abuts against the second boss.

5. The housing assembly according to claim 4, characterized in that, Along a second direction, there is an offset distance between the center of the first boss and the axis of the first hole; Wherein, the second direction is perpendicular to the first direction.

6. The housing assembly according to claim 3, wherein: When the first connecting member is received in the first recess, a gap is formed between the fourth portion and the first wall.

7. The housing assembly according to claim 2, wherein, The second structural member further includes a first extension hole, the first extension hole extending from the second through hole in a direction away from the first hole, and along the first direction, the projection of the first portion and the projection of the first extension hole overlap.

8. The housing assembly according to claim 7, characterized in that, Observed along the first direction, the first portion includes a first region located in the first extension hole, and the second connecting member abuts against the first region.

9. The housing assembly according to claim 8, wherein: The second connecting member includes a first connecting section, a second connecting section and a third connecting section, the first connecting section being disposed in the first hole, the second connecting section being disposed in the second through hole and the first through hole, the third connecting section being disposed outside the first through hole, and the surface of the third connecting section connecting the first region.

10. The housing assembly according to claim 8, wherein, When observed along the first direction, the first part of the first structural member includes a first region located in the first extension hole, the first through hole is provided in the first extension hole, and the first hole is located in the second through hole.

11. A battery pack, characterized in that, Comprising: A housing, the housing includes a second housing and the housing assembly according to any one of claims 1-10 above, the second housing is connected to the first housing and encloses to form a receiving cavity; A battery cell assembly, the battery cell assembly is disposed in the receiving cavity.

12. An electrical device, characterized in that: Comprising: A housing, the housing includes a second housing and the housing assembly according to any one of claims 1-10 above, the second housing is connected to the first housing and encloses to form a receiving cavity; A battery cell assembly, the battery cell assembly is disposed in the receiving cavity, and the battery cell assembly is used to provide electrical energy for the electrical device.

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