Box, battery pack and electric device

Abstract

The application provides a box, a battery pack and an electric device. The box comprises a frame, a cross beam, a longitudinal beam and a reinforcing piece. The cross beam is arranged in the frame and connected with the frame, and the cross beam is provided with a socket. The longitudinal beam is arranged in the frame and connected with the frame, at least one side of the longitudinal beam is provided with the cross beam, the longitudinal beam and the cross beam are welded, and the socket extends to one end of the cross beam close to the longitudinal beam. The reinforcing piece comprises a connecting body and a plug-in part, the connecting body is connected with the longitudinal beam, at least one side of the connecting body is connected with the plug-in part along the extension direction of the cross beam, and the plug-in part is arranged in the socket. In the box, the reinforcing piece can improve the connection strength of the longitudinal beam and the cross beam, thereby reducing the risk of welding failure of the longitudinal beam and the cross beam; the plug-in part of the reinforcing piece cooperates with the socket of the cross beam, can reduce the space occupation of the reinforcing piece to the box, improve the bending resistance of the connection part of the longitudinal beam and the cross beam, and further improve the connection strength of the longitudinal beam and the cross beam, thereby improving the structural strength of the box.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a housing, a battery pack, and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In the development of battery technology, besides improving the performance of battery packs, the structural strength of the battery pack casing is also a crucial issue. Therefore, how to improve the structural strength of the casing is a pressing technical problem that needs to be solved in battery technology. Utility Model Content

[0004] This application provides a housing, a battery pack, and an electrical device that can improve the structural strength of the housing.

[0005] In a first aspect, this application provides a housing, including a frame, a crossbeam, a longitudinal beam, and a reinforcing member. The crossbeam is disposed within and connected to the frame, and has an insertion hole. The longitudinal beam is disposed within and connected to the frame, and at least one side of the longitudinal beam has a crossbeam. The longitudinal beam and the crossbeam are welded together, and the insertion hole extends to the end of the crossbeam near the longitudinal beam. The reinforcing member includes a connecting body and a plug-in portion. The connecting body is connected to the longitudinal beam, and along the extension direction of the crossbeam, at least one side of the connecting body is connected to the plug-in portion, which is inserted into the insertion hole.

[0006] In the above technical solution, by setting a connecting body for the reinforcing member and connecting it to the longitudinal beam, and by setting the insertion part of the reinforcing member to engage with the insertion hole of the crossbeam, on the one hand, the reinforcing member can improve the connection strength between the longitudinal beam and the crossbeam, thereby reducing the risk of welding failure between the longitudinal beam and the crossbeam; on the other hand, the engagement of the insertion part of the reinforcing member with the insertion hole of the crossbeam can reduce the space occupied by the reinforcing member in the box body, and improve the bending resistance at the connection between the longitudinal beam and the crossbeam, further improving the connection strength between the longitudinal beam and the crossbeam, thereby improving the structural strength of the box body.

[0007] In some embodiments, the connecting body includes a first connecting portion and two second connecting portions. The two second connecting portions are arranged opposite to each other along the extension direction of the crossbeam. The first connecting portion connects the two second connecting portions, and the first connecting portion and the two second connecting portions together define a limiting groove. The longitudinal beam is engaged in the limiting groove. Vertically, the first connecting portion is located on the upper side of the longitudinal beam, and at least one of the second connecting portions has a plug-in portion on the side opposite to the limiting groove. The extension direction of the crossbeam, the extension direction of the longitudinal beam, and the vertical direction are perpendicular to each other. By engaging the longitudinal beam in the limiting groove, the installation difficulty of the connecting body and the longitudinal beam can be reduced, and the assembly stability of the longitudinal beam and the connecting body can be improved.

[0008] In some embodiments, the housing includes a first locking attachment that locks onto the first connecting portion and the longitudinal beam. By providing the first locking attachment to lock onto the first connecting portion and the longitudinal beam, the connection difficulty between the first connecting portion and the longitudinal beam is reduced, and the connection stability between the first connecting portion and the longitudinal beam is improved, thereby improving the connection stability between the longitudinal beam and the crossbeam.

[0009] In some embodiments, the housing includes a second locking attachment that locks the second connecting portion and the longitudinal beam. Connecting the second connecting portion and the longitudinal beam with the second locking attachment improves the connection stability of the second connecting portion and the longitudinal beam, thereby making the relative positions of the longitudinal beam and the insertion portion more stable, and making the relative positions of the longitudinal beam and the crossbeam more stable, thus enhancing the structural stability of the housing.

[0010] In some embodiments, both second connecting portions are provided with insertion portions, and crossbeams are provided on both sides of the longitudinal beam. The insertion portion on each second connecting portion is inserted into the insertion hole of a crossbeam. By providing crossbeams on both sides of the longitudinal beam and providing insertion portions on the two second connecting portions, both sides of the longitudinal beam along the extension direction of the crossbeam are connected to the frame through the crossbeams, making the frame structure more stable, reducing the risk of frame deformation, and improving the structural strength of the box.

[0011] In some embodiments, the housing further includes a third locking attachment, which locks the crossbeam, the connector, and the longitudinal beam. Connecting the crossbeam, connector, and longitudinal beam into a single unit via the third locking attachment makes the structure of the crossbeam, connector, and longitudinal beam more stable and improves the connection stability of the crossbeam and longitudinal beam.

[0012] In some embodiments, the longitudinal beam includes a beam body and a protrusion. Along the extension direction of the transverse beam, at least one side of the beam body has a protrusion. The connecting body includes a first connecting portion and two second connecting portions. The two second connecting portions are arranged opposite each other along the extension direction of the transverse beam. The first connecting portion connects the two second connecting portions, and the first connecting portion and the two second connecting portions together define a limiting groove. The beam body is engaged in the limiting groove. Vertically, the first connecting portion is located on the upper side of the beam body, and the second connecting portions are located on the upper side of the protrusion. At least one second connecting portion has a plug-in portion on the side facing away from the limiting groove. The extension direction of the transverse beam, the extension direction of the longitudinal beam, and the vertical direction are perpendicular to each other. A third locking attachment locks the transverse beam, the plug-in portion, and the protrusion. By providing the protrusion on at least one side of the beam body, a corner can be formed between the protrusion and the beam body, thereby improving the bending resistance of the longitudinal beam and thus enhancing its structural strength. By setting the second connecting part to be located on the upper side of the protrusion, and providing a plug-in part on the side of the second connecting part away from the limiting groove, the plug-in part can be located on the upper side of the protrusion, reducing the difficulty of attaching the plug-in part and the protrusion to the third lock accessory.

[0013] In some embodiments, a clearance notch is provided at the end of the crossbeam near the longitudinal beam along the extension direction of the crossbeam, and the protrusion is engaged in the clearance notch. By providing a clearance notch at the end of the crossbeam near the longitudinal beam, the clearance notch allows the protrusion to engage, which on the one hand reduces the installation difficulty of the crossbeam and the longitudinal beam; on the other hand, the surface of the clearance notch can adhere to the surface of the protrusion, thereby allowing for a larger contact area between the crossbeam and the longitudinal beam, improving the connection stability between the longitudinal beam and the crossbeam.

[0014] In some embodiments, the crossbeam is welded to the protrusion to form a first weld mark, which extends along the contour of the clearance notch. By providing the first weld mark to connect the crossbeam and the protrusion, the connection strength between the crossbeam and the protrusion can be improved, making the connection between the crossbeam and the protrusion more stable.

[0015] In some embodiments, one end of the crossbeam near the longitudinal beam is welded to the second connecting portion to form a second weld mark, and the second weld mark is continuously disposed with the first weld mark. By providing the second weld mark and the first weld mark continuously disposed, the strength of the first weld mark and the second weld mark can be improved, thereby improving the connection strength between the crossbeam and the reinforcing member, and further improving the connection strength between the crossbeam and the longitudinal beam.

[0016] Secondly, this application provides a battery pack, including a battery cell and a housing provided in any embodiment of the first aspect, wherein the battery cell is housed within the housing.

[0017] Thirdly, this application provides an electrical device, including a housing provided in any embodiment of the first aspect or a battery pack provided in any embodiment of the second aspect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the box provided in some embodiments of this application; Figure 2 This is a partial structural diagram of the box provided in some embodiments of this application; Figure 3 Schematic diagrams of the reinforcing members provided in some embodiments of this application; Figure 4 Exploded views of the housing provided in some embodiments of this application; Figure 5 for Figure 4A magnified view of a portion of region A in the middle; Figure 6 This is a partial structural diagram of the box provided in some embodiments of this application; Figure 7 Assembly diagrams of crossbeams, longitudinal beams, and reinforcing members provided for some embodiments of this application; Figure 8 for Figure 7 A magnified view of a portion of region B in the middle; Figure 9 Exploded views of a battery pack provided in some embodiments of this application.

[0020] Icons: 100-Battery pack; 10-Box body; 1-Frame; 2-Crossbeam; 21-Socket; 22-Avoidance notch; 23-Third through hole; 24-First surface; 3-Longitudinal beam; 31-Beam body; 32-Protrusion; 321-Third mounting hole; 33-First mounting hole; 34-Second mounting hole; 4-Reinforcing member; 41-Connecting body; 411-First connecting part; 4111-First through hole; 412-Second connecting part; 4121-Second through hole; 413-Limiting groove; 42-Plug-in part; 421-Fourth through hole; 5-First lock accessory; 6-Second lock accessory; 7-Third lock accessory; 8-First solder mark; 9-Second solder mark; 101-Cover body; 20-Battery cell; X-Extension direction of crossbeam; Z-Vertical; Y-Extension direction of longitudinal beam. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0023] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0027] In this application, "multiple" means two or more (including two).

[0028] In this application, the technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 20 and battery packs 100, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0029] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0030] The vehicle has a battery pack 100 installed inside, which can be located at the bottom, front, or rear of the vehicle. The battery pack 100 is used to provide electrical power to the vehicle. For example, the battery pack 100 can serve as the vehicle's operating power source.

[0031] In some embodiments of this application, the battery pack 100 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0032] The battery pack 100 may include a housing 10 and individual battery cells 20, with the housing 10 accommodating the individual battery cells 20. The battery pack 100 may contain one or more individual battery cells 20. If there are multiple individual battery cells 20, they may be connected in series, parallel, or a combination thereof. A combination thereof means that multiple individual battery cells 20 are connected in both series and parallel configurations. Alternatively, multiple individual battery cells 20 may first be connected in series, parallel, or a combination thereof to form a group of 20 individual battery cells, and then these groups may be connected in series, parallel, or a combination thereof to form a whole, which is then housed within the housing 10. Another option is that all individual battery cells 20 may be directly connected in series, parallel, or a combination thereof, and then the whole assembly of all individual battery cells 20 is housed within the housing 10.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the housing 10 provided in some embodiments of this application; Figure 2 This is a partial structural schematic diagram of a housing 10 provided in some embodiments of this application. This application provides a housing 10, including a frame 1, a crossbeam 2, a longitudinal beam 3, and a reinforcing member 4. The crossbeam 2 is disposed within and connected to the frame 1, and has an insertion hole 21. The longitudinal beam 3 is disposed within and connected to the frame 1, and at least one side of the longitudinal beam 3 has a crossbeam 2 attached to it. The longitudinal beam 3 is welded to the crossbeam 2, and the insertion hole 21 extends to the end of the crossbeam 2 near the longitudinal beam 3. The reinforcing member 4 includes a connecting body 41 and an insertion portion 42. The connecting body 41 is connected to the longitudinal beam 3, and along the extension direction X of the crossbeam, at least one side of the connecting body 41 is connected to the insertion portion 42, which is inserted into the insertion hole 21.

[0034] The housing 10 has a receiving space, within which both the crossbeam 2 and the longitudinal beam 3 are disposed, dividing the receiving space of the housing 10 into multiple sub-receiving spaces, which can be used to accommodate individual battery cells 20. The housing 10 can be a hollow structure open on one side, with a frame 1 surrounding the outer perimeter of the receiving space. One side of the frame 1 is open, forming an opening that communicates with the receiving space. The housing 10 can also include a cover 101, which covers the opening of the frame 1. Alternatively, the housing 10 can be a hollow structure open on both sides, with openings formed on opposite sides of the frame 1, both of which communicate with the receiving space. The housing 10 can also include two covers 101, which respectively cover the two openings of the frame 1.

[0035] Both the crossbeam 2 and the longitudinal beam 3 are located within the frame 1. The longitudinal beam 3 may have only one end connected to the frame 1, while the other end connects to other beams. For example, the frame 1 may also include a partition beam that divides the housing 10's space into a battery compartment for housing the individual battery cells 20 and a control compartment for housing electrical components. One end of the longitudinal beam 3 connects to the frame 1, and the other end connects to the partition beam. The electrical components may include relays. Alternatively, both ends of the longitudinal beam 3 may be connected to the frame 1. The longitudinal beam 3 may be fixedly connected to the frame 1; for example, it may be welded to the frame 1. Alternatively, the longitudinal beam 3 may be detachably connected to the frame 1; for example, it may be connected to the frame 1 via fasteners such as bolts or rivets.

[0036] The beam 2 can be fixedly connected to the frame 1; for example, the beam 2 can be welded to the frame 1. Alternatively, the beam 2 can be detachably connected to the frame 1; for example, the beam 2 can be connected to the frame 1 by fasteners, such as bolts or rivets. The other end of the beam 2 is welded to the longitudinal beam 3 to form a first weld mark 8, which connects the beam 2 and the longitudinal beam 3.

[0037] The connecting body 41 and the plug-in part 42 can be integrally formed; for example, the connecting body 41 and the plug-in part 42 can be integrally cast. Alternatively, the connecting body 41 and the plug-in part 42 can be separately provided and connected; for example, the connecting body 41 and the plug-in part 42 can be welded together. The plug-in part 42 can be provided on only one side of the connecting body 41, or the plug-in part 42 can be provided on both sides of the connecting body 41.

[0038] The crossbeam 2 can have one or more insertion holes 21. The reinforcing member 4 can have one or more insertion parts 42. In embodiments where there are multiple insertion holes 21, the insertion parts 42 can correspond one-to-one with the insertion holes 21, with each insertion part 42 inserted into one insertion hole 21; alternatively, the number of insertion holes 21 can exceed the number of insertion parts 42, with each insertion part 42 inserted into a portion of the insertion holes 21.

[0039] In this embodiment, by setting the connecting body 41 of the reinforcing member 4 to connect with the longitudinal beam 3, and setting the insertion part 42 of the reinforcing member 4 to be inserted into the insertion hole 21 of the crossbeam 2, on the one hand, the reinforcing member 4 can improve the connection strength between the longitudinal beam 3 and the crossbeam 2, thereby reducing the risk of welding failure between the longitudinal beam 3 and the crossbeam 2; on the other hand, the insertion part 42 of the reinforcing member 4 and the insertion hole 21 of the crossbeam 2 can reduce the space occupied by the reinforcing member 4 on the box 10, and improve the bending resistance at the connection between the longitudinal beam 3 and the crossbeam 2, further improving the connection strength between the longitudinal beam 3 and the crossbeam 2, thereby improving the structural strength of the box 10.

[0040] In some embodiments, please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of the reinforcing member 4 provided in some embodiments of this application. The connecting body 41 includes a first connecting part 411 and two second connecting parts 412. The two second connecting parts 412 are arranged opposite to each other along the extension direction X of the crossbeam. The first connecting part 411 connects the two second connecting parts 412. The first connecting part 411 and the two second connecting parts 412 together define a limiting groove 413. The longitudinal beam 3 is engaged in the limiting groove 413. Along the vertical direction Z, the first connecting part 411 is located on the upper side of the longitudinal beam 3. At least one second connecting part 412 has a plug-in part 42 on the side opposite to the limiting groove 413. The extension direction X of the crossbeam, the extension direction Y of the longitudinal beam, and the vertical direction Z are perpendicular to each other.

[0041] Two second connecting portions 412 are respectively disposed at opposite ends of the first connecting portion 411 along the extension direction X of the crossbeam, and both second connecting portions 412 extend vertically along the Z direction. The first connecting portion 411 and the two second connecting portions 412 can be separately disposed and connected, or they can be integrally formed. Both second connecting portions 412 may have a plug-in portion 42 on the side facing away from the limiting groove 413; alternatively, only one of the two second connecting portions 412 may have a plug-in portion 42 on the side facing away from the limiting groove 413. The number of plug-in portions 42 provided on the second connecting portion 412 can be one or more. For example, the second connecting portion 412 is provided with two plug-in portions 42, and the two plug-in portions 42 are spaced apart vertically along the Z direction.

[0042] In this embodiment, by locking the longitudinal beam 3 in the limiting groove 413, the installation difficulty of the connecting body 41 and the longitudinal beam 3 can be reduced, and the assembly stability of the longitudinal beam 3 and the connecting body 41 can be improved.

[0043] In some embodiments, please refer to Figure 4 and Figure 5 , Figure 4 Exploded views of the housing 10 provided in some embodiments of this application; Figure 5 for Figure 4 A partial enlarged view of area A in the middle. The housing 10 includes a first locking accessory 5, which locks the first connecting part 411 and the longitudinal beam 3.

[0044] For example, the first connecting part 411 is provided with a first through hole 4111, and the top of the longitudinal beam 3 along the vertical Z direction is provided with a first mounting hole 33. The first locking accessory 5 passes through the first through hole 4111 and is locked and connected to the first mounting hole 33. The first locking accessory 5 may be a bolt, rivet, etc.

[0045] In this embodiment, by setting the first locking attachment 5 to lock the first connecting part 411 and the longitudinal beam 3, the connection difficulty of the first connecting part 411 and the longitudinal beam 3 is reduced, the connection stability of the first connecting part 411 and the longitudinal beam 3 is improved, thereby improving the connection stability of the longitudinal beam 3 and the crossbeam 2.

[0046] In some embodiments, please continue to refer to Figure 4 and Figure 5 The housing 10 includes a second locking attachment 6, which locks the second connecting part 412 and the longitudinal beam 3.

[0047] For example, the second lock attachment 6 is provided with a second through hole 4121, and the wall of the longitudinal beam 3 along the extension direction X of the transverse beam is provided with a second mounting hole 34. The second attachment passes through the second through hole 4121 and is locked and connected to the second mounting hole 34. The second lock attachment 6 can be a bolt, rivet, etc.

[0048] In this embodiment, the second connecting part 412 and the longitudinal beam 3 are connected by the second locking attachment 6, which improves the connection stability of the second connecting part 412 and the longitudinal beam 3, thereby making the relative position of the longitudinal beam 3 and the plug-in part 42 more stable, making the relative position of the longitudinal beam 3 and the crossbeam 2 more stable, and improving the structural stability of the box 10.

[0049] In some embodiments, please continue to refer to Figure 4 and Figure 5 Both second connecting parts 412 are provided with insertion parts 42, and crossbeams 2 are provided on both sides of the longitudinal beam 3. The insertion part 42 on each second connecting part 412 is inserted into the insertion hole 21 of a crossbeam 2.

[0050] Each second connecting part 412 may have only one insertion part 42, with each insertion part 42 corresponding to an insertion hole 21 in a crossbeam 2. Alternatively, each second connecting part 412 may have multiple insertion parts 42, with each insertion part 42 corresponding to an insertion hole 21 in a crossbeam 2; or multiple insertion parts 42 of the same second connecting part 412 may be inserted into multiple insertion holes 21 in the same crossbeam 2.

[0051] In this embodiment, by setting crossbeams 2 on both sides of the longitudinal beam 3 and setting insertion parts 42 on the two second connecting parts 412, the longitudinal beam 3 is connected to the frame 1 on both sides of the extension direction X of the crossbeam through the crossbeams 2, which makes the structure of the frame 1 more stable, reduces the risk of deformation of the frame 1, and improves the structural strength of the box 10.

[0052] In some embodiments, please refer to Figure 4 and Figure 5 And further refer to Figure 6 , Figure 6 This is a partial structural schematic diagram of the housing 10 provided in some embodiments of this application. The housing 10 also includes a third locking attachment 7, which locks the crossbeam 2, the insertion part 42, and the longitudinal beam 3.

[0053] The third locking accessory 7 can be a snap-fit, pin, screw, etc. For example, if the third locking accessory 7 is a snap-fit, the crossbeam 2, the insertion part 42, and the longitudinal beam 3 are all snapped together by the snap-fit. Alternatively, if the third locking accessory 7 is a pin, the crossbeam 2, the insertion part 42, and the longitudinal beam 3 are all provided with pin holes, and the pin passes through the pin holes to lock the crossbeam 2, the insertion part 42, and the longitudinal beam 3. Another example is that the crossbeam 2 is provided with a third through hole 23, the insertion part 42 is provided with a fourth through hole 421, and the longitudinal beam 3 is provided with a third mounting hole 321. The third locking accessory 7 passes through the third through hole 23 and the fourth through hole 421 and then locks into the third mounting hole 321. The extension direction of the third locking accessory 7 can be parallel to the vertical Z-axis or at an acute angle to the vertical Z-axis.

[0054] In this embodiment, the crossbeam 2, the plug-in part 42 and the longitudinal beam 3 are connected as a whole by the third locking attachment 7, which makes the structure of the crossbeam 2, the plug-in part 42 and the longitudinal beam 3 more stable and improves the connection stability of the crossbeam 2 and the longitudinal beam 3.

[0055] In some embodiments, please continue to refer to Figure 6 The longitudinal beam 3 includes a beam body 31 and a protrusion 32. Along the extension direction X of the transverse beam, at least one side of the beam body 31 has a protrusion 32. The connecting body 41 includes a first connecting part 411 and two second connecting parts 412. The two second connecting parts 412 are arranged opposite each other along the extension direction X of the transverse beam. The first connecting part 411 connects the two second connecting parts 412. The first connecting part 411 and the two second connecting parts 412 together define a limiting groove 413. The beam body 31 is engaged in the limiting groove 413. Along the vertical direction Z, the first connecting part 411 is located on the upper side of the beam body 31, and the second connecting parts 412 are located on the upper side of the protrusion 32. At least one second connecting part 412 has a plug-in part 42 on the side facing away from the limiting groove 413. The extension direction X of the transverse beam, the extension direction Y of the longitudinal beam, and the vertical direction Z are all perpendicular to each other. The third locking accessory 7 locks the transverse beam 2, the plug-in part 42, and the protrusion 32.

[0056] The protrusion 32 may be located at one end of the beam body 31 along the vertical Z direction, or the protrusion 32 may be spaced apart from both ends of the beam body 31 along the vertical Z direction. The protrusion 32 may be provided on only one side of the beam body 31 along the extension direction X of the crossbeam; or the protrusion 32 may be provided on both sides of the beam body 31 along the extension direction X of the crossbeam. Along the vertical Z direction, the first connecting portion 411 and the second connecting portion 412 are both located on the same side of the protrusion 32.

[0057] For example, the crossbeam 2 is provided with a third through hole 23 extending vertically in the Z direction, the plug-in part 42 is provided with a fourth through hole 421 extending vertically in the Z direction, the protrusion 32 is provided with a third mounting hole 321 extending vertically in the Z direction, and the third locking attachment 7 passes through the third through hole 23 and the fourth through hole 421 and is locked and connected to the third mounting hole 321.

[0058] In this embodiment, by providing the protrusion 32 on at least one side of the beam body 31, a corner can be formed between the protrusion 32 and the beam body 31, thereby improving the bending resistance of the longitudinal beam 3 and thus enhancing its structural strength. By providing the second connecting part 412 on the upper side of the protrusion 32, and providing a plug-in part 42 on the side of at least one second connecting part 412 away from the limiting groove 413, the plug-in part 42 can be located on the upper side of the protrusion 32, reducing the difficulty of the third locking accessory 7 locking the plug-in part 42 and the protrusion 32.

[0059] In some embodiments, please continue to refer to Figure 5 and Figure 6 Along the extension direction X of the crossbeam, a clearance notch 22 is provided at one end of the crossbeam 2 near the longitudinal beam 3, and the protrusion 32 is locked in the clearance notch 22.

[0060] Along the extension direction X of the crossbeam, the end of the crossbeam 2 near the longitudinal beam 3 has a first surface 24, and a clearance notch 22 is provided on the first surface 24. The first surface 24 faces the second connecting portion 412. The protrusion 32 is engaged with the clearance notch 22.

[0061] The entire protrusion 32 may be engaged with the clearance notch 22, with the first surface 24 abutting against the second connecting portion 412; or only a portion of the protrusion 32 may be engaged with the clearance notch 22, with a distance between the first surface 24 and the second connecting portion 412.

[0062] In this embodiment, by providing an avoidance notch 22 at one end of the crossbeam 2 near the longitudinal beam 3, the avoidance notch 22 allows the protrusion 32 to be inserted, which on the one hand reduces the installation difficulty of the crossbeam 2 and the longitudinal beam 3; on the other hand, the surface of the avoidance notch 22 can be attached to the surface of the protrusion 32, thereby allowing the crossbeam 2 and the longitudinal beam 3 to have a larger contact area, improving the connection stability of the longitudinal beam 3 and the crossbeam 2.

[0063] In some embodiments, please refer to Figure 7 and Figure 8 , Figure 7 This is an assembly diagram of the crossbeam 2, longitudinal beam 3, and reinforcing member 4 provided in some embodiments of this application; Figure 8 for Figure 7 A magnified view of a portion of region B. The crossbeam 2 is welded to the protrusion 32 to form the first weld mark 8, which extends along the contour of the clearance notch 22.

[0064] The protrusion 32 is engaged with the clearance notch 22, and the first solder mark 8 is connected to the groove wall of the clearance notch 22 on the outer surface of the protrusion 32.

[0065] In this embodiment, by providing the first solder mark 8 to connect the crossbeam 2 and the protrusion 32, the connection strength between the crossbeam 2 and the protrusion 32 can be improved, making the connection between the crossbeam 2 and the protrusion 32 more stable.

[0066] In some embodiments, please continue to refer to Figure 7 and Figure 8 The end of the crossbeam 2 near the longitudinal beam 3 is welded to the second connecting part 412 to form the second weld mark 9, and the second weld mark 9 is continuously arranged with the first weld mark 8.

[0067] The second solder mark 9 extends along the outer edge of the first surface 24. The second solder mark 9 connects the first surface 24 of the crossbeam 2 and the outer surface of the second connecting portion 412. The second solder mark 9 and the first solder mark 8 are joined at their ends to surround the outer contour of the end of the crossbeam 2.

[0068] In this embodiment, by continuously providing the second solder mark 9 and the first solder mark 8, the strength of the first solder mark 8 and the second solder mark 9 can be improved, thereby improving the connection strength between the crossbeam 2 and the reinforcing member 4, and further improving the connection strength between the crossbeam 2 and the longitudinal beam 3.

[0069] Please refer to Figure 9 , Figure 9 This is an exploded view of a battery pack 100 provided in some embodiments of this application. This application provides a battery pack 100, including a battery cell 20 and a housing 10 provided in any of the above embodiments, wherein the battery cell 20 is housed within the housing 10.

[0070] This application provides an electrical device, including the battery pack 100 provided in any of the above embodiments. The battery pack 100 is used to provide electrical energy to the electrical device.

[0071] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0072] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A housing (10), characterized in that, include: Border (1); A crossbeam (2) is disposed within the frame (1) and connected to the frame (1), and the crossbeam (2) is provided with a socket (21). A longitudinal beam (3) is disposed within the frame (1) and connected to the frame (1). At least one side of the longitudinal beam (3) is provided with a crossbeam (2). The longitudinal beam (3) is welded to the crossbeam (2). The insertion hole (21) extends to one end of the crossbeam (2) near the longitudinal beam (3). The reinforcing member (4) includes a connecting body (41) and a plug-in part (42). The connecting body (41) is connected to the longitudinal beam (3). Along the extension direction (X) of the crossbeam, at least one side of the connecting body (41) is connected to the plug-in part (42), which is inserted into the socket (21).

2. The housing (10) as described in claim 1, characterized in that, The connecting body (41) includes a first connecting part (411) and two second connecting parts (412). The two second connecting parts (412) are arranged opposite each other along the extension direction (X) of the crossbeam. The first connecting part (411) connects the two second connecting parts (412). The first connecting part (411) and the two second connecting parts (412) together define a limiting groove (413). The longitudinal beam (3) is inserted into the limiting groove (413) along the vertical direction (Z). The first connecting part (411) is located on the upper side of the longitudinal beam (3). At least one second connecting part (412) is provided with the insertion part (42) on the side away from the limiting groove (413). The extension direction (X) of the crossbeam, the extension direction (Y) of the longitudinal beam and the vertical direction (Z) are perpendicular to each other.

3. The housing (10) as described in claim 2, characterized in that, The housing (10) includes a first locking attachment (5), which locks the first connecting part (411) and the longitudinal beam (3); and / or The housing (10) includes a second locking attachment (6), which locks the second connecting part (412) and the longitudinal beam (3).

4. The housing (10) as described in claim 2, characterized in that, Both of the second connecting parts (412) are provided with plug-in parts (42), and the crossbeams (2) are provided on both sides of the longitudinal beam (3). The plug-in part (42) on each of the second connecting parts (412) is inserted into the plug hole (21) of one of the crossbeams (2).

5. The housing (10) as described in any one of claims 1-4, characterized in that, The housing (10) also includes a third locking attachment (7), which locks the crossbeam (2), the plug-in part (42) and the longitudinal beam (3).

6. The housing (10) as described in claim 5, characterized in that, The longitudinal beam (3) includes a beam body (31) and a protrusion (32). The protrusion (32) is provided on at least one side of the beam body (31) along the extension direction (X) of the transverse beam. The connecting body (41) includes a first connecting part (411) and two second connecting parts (412). The two second connecting parts (412) are arranged opposite each other along the extension direction (X) of the crossbeam. The first connecting part (411) connects the two second connecting parts (412). The first connecting part (411) and the two second connecting parts (412) together define a limiting groove (413). The beam body (31) is inserted into the limiting groove (413) along the vertical direction (Z). The first connecting part (411) is located on the upper side of the beam body (31), and the second connecting part (412) is located on the upper side of the protrusion (32). At least one of the second connecting parts (412) is provided with the insertion part (42) on the side away from the limiting groove (413). The extension direction (X) of the crossbeam, the extension direction (Y) of the longitudinal beam and the vertical direction (Z) are perpendicular to each other. The third locking attachment (7) locks the crossbeam (2), the plug-in part (42) and the protrusion (32).

7. The housing (10) as described in claim 6, characterized in that, Along the extension direction (X) of the crossbeam, the end of the crossbeam (2) near the longitudinal beam (3) is provided with a clearance notch (22), and the protrusion (32) is engaged in the clearance notch (22).

8. The housing (10) as described in claim 7, characterized in that, The crossbeam (2) is welded to the protrusion (32) to form a first weld mark (8), which extends along the contour trajectory of the clearance notch (22).

9. The housing (10) as described in claim 8, characterized in that, The end of the crossbeam (2) near the longitudinal beam (3) is welded to the second connecting part (412) to form a second weld mark (9), and the second weld mark (9) and the first weld mark (8) are continuously arranged.

10. A battery pack (100), characterized in that, It includes a battery cell (20) and a housing (10) as described in any one of claims 1-9, wherein the battery cell (20) is housed within the housing (10).

11. An electrical appliance, characterized in that, Includes the housing (10) as described in any one of claims 1-9 or the battery pack (100) as described in claim 10.

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