Suspension connection mechanism, battery pack and power utilization device

Abstract

The utility model discloses a suspension connection mechanism, a battery pack and an electric device. The suspension connection mechanism includes: a beam protrusion structure having at least one beam abutment surface; the suspension structure is arranged on one side of the beam protrusion structure, and the relative position of the suspension structure and the beam protrusion structure is fixed; the suspension structure comprises a suspension connecting face and a suspension protruding part arranged on the suspension connecting face, and the suspension protruding part is provided with at least one suspension abutting face. The plug block is arranged between the beam protrusion structure and the suspension structure, the plug block comprises a plug block groove, and at least part of the beam protrusion structure is located in the plug block groove; according to the suspension connection mechanism, the battery pack and the electric device, the connection operation efficiency can be improved, and the connection cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of batteries, and more particularly to a suspension connection mechanism, a battery pack, and an electrical device. Background Technology

[0002] Battery packs are typically used in the form of a casing, with a suspension mechanism on the side. This mechanism usually consists of side beams and plugs. The side beams and plugs need to be fixedly connected, usually by welding or bonding. Regardless of whether welding or bonding is used, appropriate tooling is required, and manual cleaning of excess adhesive or weld seams is necessary, increasing the number of steps and consuming more manpower and resources. Summary of the Invention

[0003] This application provides a suspension connection mechanism, a battery pack, and an electrical device, which can improve connection operation efficiency and reduce connection costs.

[0004] In a first aspect, embodiments of this application provide a suspension connection mechanism, comprising: a beam protrusion structure having at least one beam abutment surface; a suspension structure disposed on one side of the beam protrusion structure, wherein the relative position of the suspension structure and the beam protrusion structure is fixed; the suspension structure includes a suspension connection surface and a suspension protrusion disposed on the suspension connection surface, the suspension protrusion having at least one suspension abutment surface; a stopper block disposed between the beam protrusion structure and the suspension structure, the stopper block including a stopper block groove, wherein at least a portion of the beam protrusion structure is located within the stopper block groove; the beam abutment surface, the suspension connection surface, and the suspension abutment surface all abut against the stopper block.

[0005] According to an embodiment of the first aspect of this application, it also includes a side beam structure, a suspension structure and a beam protrusion structure, all of which are fixedly connected to the side beam structure. A receiving space is provided between the suspension structure and the side beam structure, and a plug is disposed in the receiving space.

[0006] According to an embodiment of the first aspect of this application, the plug includes a first plug surface, a second plug surface, a third plug surface, and a fourth plug surface; the second plug surface abuts against the beam abutment surface, the third plug surface abuts against the suspension connection surface, and the fourth plug surface abuts against the suspension abutment surface; the distance between the first plug surface and the third plug surface is less than the distance from the end of the beam protrusion structure away from the third plug surface to the third plug surface.

[0007] According to an embodiment of the first aspect of this application, the beam protrusion structure further includes a plurality of beam protrusions located on the beam abutment surface.

[0008] According to an embodiment of the first aspect of this application, the plug further includes a plurality of recesses located on the surfaces of the third and fourth plugs.

[0009] According to an embodiment of the first aspect of this application, the angle between the surface of the third stopper and the surface of the fourth stopper is an obtuse angle, and the angle between the surface of the first stopper and the surface of the second stopper is an acute angle; or, the angle between the surface of the third stopper and the surface of the fourth stopper is an acute angle, and the angle between the surface of the first stopper and the surface of the second stopper is an obtuse angle.

[0010] According to an embodiment of the first aspect of this application, both ends of the plug have end faces along the extension direction of the beam structure; chamfers are provided between the surface and end face of the first plug, between the surface and end face of the second plug, between the surface and end face of the third plug, and between the surface and end face of the fourth plug.

[0011] According to an embodiment of the first aspect of this application, the bottom of the plug groove has a groove bottom surface, and the end of the beam protrusion structure near the surface of the third plug has a protruding top surface, with the groove bottom surface and the protruding top surface abutting against each other.

[0012] Secondly, embodiments of this application provide a battery pack, including: a battery module; and a battery pack housing for housing the battery module, the battery pack housing including the suspension connection mechanism of the first aspect of this application.

[0013] Thirdly, embodiments of this application provide an electrical device, including a battery pack according to embodiments of the second aspect of this application.

[0014] The suspension connection mechanism, battery pack, and power device provided in this application embodiment have a fixed relative position between the beam protrusion structure and the suspension structure. A plug is inserted between the beam protrusion structure and the suspension structure, with a portion of the beam protrusion structure extending into the plug groove. The beam contact surface, suspension connection surface, and suspension contact surface all abut against the plug. When the plug is inserted into the space between the beam protrusion structure and the suspension structure, both the suspension structure and the beam protrusion structure form an interference fit with the plug, thereby fixing the relative position of the plug, beam protrusion structure, and suspension structure for battery suspension installation. In the suspension connection mechanism of this application embodiment, simply inserting the plug between the beam structure and the suspension structure achieves a fixed connection between the plug and the beam structure, simplifying the installation process and significantly reducing the consumption of manpower and resources. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a suspension connection mechanism according to an embodiment of this application.

[0017] Figure 2 This is a side view of the suspension connection mechanism according to an embodiment of this application.

[0018] Figure 3 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0019] Figure 4 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0020] Figure 5 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0021] Figure 6 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0022] Figure 7 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0023] Figure 8 This is a schematic diagram of a battery pack according to an embodiment of this application.

[0024] Figure 9 This is a schematic diagram of the structure of an electrical device according to an embodiment of this application.

[0025] Figure label:

[0026] 1. Edge beam structure; 11. Beam protrusion structure; 111. Beam protrusion;

[0027] 2. Suspension structure; 21. Suspension protrusion;

[0028] 3. Stopper; 31. Stopper groove; 32. Recess;

[0029] S11, Beam connection surface; S12, Beam abutment surface; S13, Protruding top surface; S21, Suspension connection surface; S22, Suspension abutment surface; S31, First plug surface; S32, Second plug surface; S33, Third plug surface; S34, Fourth plug surface; S35, Groove bottom surface;

[0030] 100. Electrical device; 200. Battery pack; 210. Battery module; 220. Suspension connection mechanism. Detailed Implementation

[0031] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples thereof.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0033] Relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0034] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0035] Furthermore, the term "and / or" in this article 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, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0036] It should be understood that in the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0037] The applicant discovered that battery packs are typically used in the form of a box, with a suspension mechanism on the side of the box. This suspension mechanism usually includes a side beam and a plug. The side beam and plug need to be fixedly connected, generally by welding or bonding. If welding is used, custom-made tooling needs to be installed and removed, both requiring bolts, increasing the overall process time and manpower. Furthermore, the cooling and cleaning of the weld seam, as well as the handling of post-weld deformation, also increase the process time and manpower. If bonding is used, adhesive storage grooves need to be made in the plug, and corresponding tooling needs to be installed and removed, both requiring bolts. Additionally, the structural adhesive requires time to set, increasing the overall process time, and any excess adhesive needs to be wiped away, also requiring manpower. Therefore, connecting the side beam and plug requires appropriate tooling and manual cleaning of excess adhesive or weld seams, increasing the process and consuming significant manpower and resources.

[0038] Based on the above analysis, the applicant proposes a suspension connection mechanism, a battery pack, and an electrical device. The suspension connection mechanism includes a beam protrusion structure, a suspension structure, and a plug. The relative positions of the beam protrusion structure and the suspension structure are fixed. The plug is inserted between the beam protrusion structure and the suspension structure, with a portion of the beam protrusion structure extending into the plug groove. The beam contact surface, the suspension connection surface, and the suspension contact surface all abut against the plug. When the plug is inserted into the space between the beam protrusion structure and the suspension structure, both the suspension structure and the beam protrusion structure form an interference fit with the plug, thereby fixing the relative positions of the plug, the beam protrusion structure, and the suspension structure for battery suspension installation. In the suspension connection mechanism of this application embodiment, only the plug needs to be inserted between the beam structure and the suspension structure to achieve a fixed connection between the plug and the beam structure. This not only simplifies the installation process but also significantly reduces the consumption of manpower and material resources.

[0039] Figure 1 This is a schematic diagram of a suspension connection mechanism according to an embodiment of this application. Figure 2 This is a side view of the suspension connection mechanism according to an embodiment of this application.

[0040] Please see Figure 1 and Figure 2This application provides a suspension connection mechanism 220, including: a beam protrusion structure 11; the beam protrusion structure 11 has at least one beam abutment surface S12; a suspension structure 2, disposed on one side of the beam protrusion structure 11, and the relative position of the suspension structure 2 and the beam protrusion structure 11 is fixed; the suspension structure 2 includes a suspension connection surface S21 and a suspension protrusion 21 disposed on the suspension connection surface S21, the suspension connection surface S21 facing the beam protrusion structure 11, and the suspension protrusion 21 having at least one suspension abutment surface S22; a plug 3, disposed between the beam protrusion structure 11 and the suspension structure 2, the plug 3 including a plug groove 31, at least a portion of the beam protrusion structure 11 being located within the plug groove 31; the beam abutment surface S12, the suspension connection surface S21, and the suspension abutment surface S22 all abut against the plug 3.

[0041] The suspension connection mechanism 220 of this application embodiment can be used to suspend certain devices. When using the suspension connection mechanism 220 of this application embodiment, the beam protrusion structure 11 can be connected to the suspended object, and the plug 3 can be connected to the suspension point of the suspended object. For example, the suspension connection mechanism 220 of this application embodiment can be used to suspend the battery module 210 of the battery pack 200 on an electrical device, the beam protrusion structure 11 can be connected to the side beam of the battery pack housing, and the plug 3 can be connected to the electrical device.

[0042] The relative positions of the beam protrusion structure 11 and the suspension protrusion 21 of the suspension structure 2 remain fixed. They can be connected to the same structure, for example, in the form of an integral structure such as welding or casting, or in the form of a detachable connection such as bolt connection. The suspension connection surface S21 of the suspension structure 2 faces the beam protrusion structure 11. A stopper 3 is inserted between the beam protrusion structure 11 and the suspension structure 2, sandwiched between the beam protrusion structure 11 and the suspension connection surface S21, with the suspension connection surface S21 abutting against the stopper 3 to form an interference fit. Through the friction between the stopper 3 and the suspension connection surface S21, the suspension structure 2 and the stopper 3 can be fixed, greatly simplifying the installation and connection of the suspension structure 2 and the stopper 3, improving efficiency, and saving manpower and resources.

[0043] Furthermore, the plug 3 has a plug groove 31, and the beam protrusion structure 11 is inserted into the plug groove 31. The beam protrusion structure 11 has a beam abutment surface S12, and the suspension protrusion 21 has a suspension abutment surface S22. A portion of the plug 3 is located between the beam abutment surface S12 and the suspension abutment surface S22. Both the beam abutment surface S12 and the suspension abutment surface S22 abut against the plug 3, forming an interference fit. Through the friction between the plug 3 and the beam abutment surface S12, and the friction between the plug 3 and the suspension abutment surface S22, the beam protrusion structure 11, the suspension structure 2, and the plug 3 can be fixed, further simplifying the installation and connection of the beam protrusion structure 11, the suspension structure 2, and the plug 3, further improving efficiency, and further saving manpower and resources. It is understood that there can be multiple beam protrusion structures 11, each beam protrusion structure 11 being cantilevered.

[0044] Furthermore, the suspension connection mechanism 220 of this application embodiment also includes a side beam structure 1, a suspension structure 2 and a beam protrusion structure 11 are both fixedly connected to the side beam structure 1, a receiving space is provided between the suspension structure 2 and the side beam structure 1, and a plug 3 is disposed in the receiving space.

[0045] The side beam structure 1 can be connected to the suspended object. When the suspension connection mechanism 220 of this embodiment is used to suspend the battery module 210 of the battery pack 200, the side beam structure 1 can be part of the battery pack housing and connected to the battery module. The suspension structure 2, the beam protrusion structure 11, and the side beam structure 1 can be connected as a whole in the form of an integral structure, or they can be connected as a whole in the form of a detachable connection. At this time, the suspension structure 2, the side beam structure 1, and the beam protrusion structure 11 enclose a receiving space, and the plug 3 is inserted into the receiving space.

[0046] Further reading Figure 2The stopper 3 includes a first stopper surface S31, a second stopper surface S32, a third stopper surface S33, and a fourth stopper surface S34. The side beam structure 1 includes a beam connection surface S11, and the beam protrusion structure 11 is connected to the beam connection surface S11. The second stopper surface S32 abuts against the beam abutment surface S12, the third stopper surface S33 abuts against the suspension connection surface S21, and the fourth stopper surface S34 abuts against the suspension abutment surface S22. Because the beam connection surface S11 intersects with the beam abutment surface S12, and the suspension connection surface S21 intersects with the suspension abutment surface S22, the direction of the force between the second block surface S32 and the beam abutment surface S12 intersects, increasing the strength of the connection between the block 3 and the side beam structure 1. Simultaneously, the direction of the force between the third block surface S33 and the suspension connection surface S21, and the direction of the force between the fourth block surface S34 and the suspension abutment surface S22, intersect, further increasing the strength of the connection between the block 3 and the suspension structure 2. The distance between the first block surface S31 and the third block surface S33 is less than the distance from the end of the beam protrusion structure 11 furthest from the third block surface S33 to the third block surface S31, resulting in a gap between the first block surface S31 and the beam connection surface S11.

[0047] Figure 3 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0048] Further, please refer to Figure 3 The beam protrusion structure 11 also includes multiple beam protrusions 111, which are located on the beam abutment surface S12 and contact the surface S32 of the second plug. Given that the side beam structure 1 and the suspension structure 2 are fitted with the plug 3 via an interference fit, the beam protrusions 111 can reduce the contact area between the beam abutment surface S12 and the surface S32 of the second plug, while the space between the beam protrusions 111 can release the stress and strain generated by the beam abutment surface S12, thereby reducing the risk of damage to the beam protrusion structure 11.

[0049] Figure 4 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0050] Further, please refer to Figure 4 The plug 3 also includes multiple recesses 32 located on the third plug surface S33 and the fourth plug surface S34. Given that the side beam structure 1 and the suspension structure 2 are fitted with the plug 3 via an interference fit, the recesses 32 can reduce the contact area between the third plug surface S33 and the fourth plug surface S34 and the suspension contact surface S22. The recesses 32 can also release the stress and strain generated by the suspension contact surface S22, thereby reducing the risk of damage to the beam protrusion structure 11.

[0051] Further reading Figure 2The angle between the suspension connection surface S21 and the suspension abutment surface S22 is obtuse, while the angle between the beam connection surface S11 and the beam abutment surface S12 is acute. Along the direction from the side beam structure 1 to the suspension structure 2, the total width of the plug 3 gradually decreases, while the width of the plug groove 31 gradually increases. This improves the load-bearing capacity of the plug 3 in the direction relative to the inclination from the side beam structure 1 to the suspension structure 2, thereby improving the robustness of the connection between the side beam structure 1, the suspension structure 2, and the plug 3, and further improving the stability and structural strength of the suspension connection mechanism 220 of this embodiment.

[0052] Figure 5 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0053] Further, please refer to Figure 5 The angle between the suspension connection surface S21 and the suspension abutment surface S22 is an acute angle, while the angle between the beam connection surface S11 and the beam abutment surface S122 is an obtuse angle. Along the direction from the side beam structure 1 to the suspension structure 2, the total width of the plug 3 gradually increases, and the width of the plug groove 31 gradually decreases, which improves the load-bearing capacity of the plug 3 in the direction of inclination relative to the side beam structure 1 to the suspension structure 2, thereby improving the firmness of the connection between the side beam structure 1, the suspension structure 2, and the plug 3, and further improving the stability and structural strength of the suspension connection mechanism 220 of this application embodiment.

[0054] Furthermore, along the extension direction of the side beam structure 1, both ends of the plug 3 have end faces; chamfers are provided between the first plug surface S31 and the end face, between the second plug surface S32 and the end face, between the third plug surface S33 and the end face, and between the fourth plug surface S34 and the end face. That is to say, each edge of the end of the plug 3 has a chamfer. When the plug 3 is inserted between the side beam structure 1 and the suspension structure 2, the chamfered end of the plug 3 can be inserted more easily between the side beam structure 1 and the suspension structure 2, making the installation and fixing of the plug 3 simpler.

[0055] Figure 6 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0056] Further, please refer to Figure 6The bottom of the plug groove 31 has a bottom surface S35, and the side of the beam protrusion structure 11 away from the beam connection surface S11 has a protruding top surface S13, that is, the side of the beam protrusion structure 11 near the surface S31 of the third plug has a protruding top surface S13, and the bottom surface S35 and the protruding top surface S13 abut against each other. The cross-sectional shape of the beam protrusion structure 11 is trapezoidal and is embedded in the plug groove 31. The beam abutment surface S12 corresponds to the two sides of the trapezoid, that is, all three surfaces of the beam protrusion structure 11 abut against the plug groove 31. This can further fix the position of the plug 3, thereby improving the firmness of the connection between the side beam structure 1, the suspension structure 2 and the plug 3, and thus improving the stability and structural strength of the suspension connection mechanism 220 of this application embodiment.

[0057] Figure 7 This is another side view of the suspension connection mechanism according to an embodiment of this application.

[0058] Further reading Figure 7 The beam protrusion structure 11 is hollow, meaning that the cross-sectional shape of the beam protrusion structure 11 is a trapezoidal frame. Without significantly affecting the structural strength, the weight and material usage of the side beam structure 1 can be reduced, which facilitates lightweight design and also helps to reduce costs.

[0059] Figure 8 This is a schematic diagram of a battery pack according to an embodiment of this application.

[0060] Please see Figure 8 This application also provides a battery pack 200, including: a battery module 210; and a battery pack housing for housing the battery module 210. The battery pack housing includes a suspension connection mechanism as described in the previous embodiment of this application. The side beam structure 1 of the suspension connection mechanism 220 is connected to the battery module 210. Multiple suspension connection mechanisms 220 can be used to form a frame, which is then connected to the battery module 210. The battery module 210 can be one or multiple. When multiple battery modules 210 are used, they are connected as a whole and then connected to the suspension connection mechanism 220.

[0061] Figure 9 This is a schematic diagram of the structure of an electrical device according to an embodiment of this application.

[0062] Please see Figure 9This application also provides an electrical device 100, including the battery pack 200 of the aforementioned embodiments. Exemplarily, the electrical device 100 can be a vehicle, such as a logistics vehicle, an Automated Guided Vehicle (AGV), an automobile, or other transportation devices with transportation capabilities. Taking the electrical device 100 as a vehicle as an example, the electrical device 100 may also include a frame, on which the battery pack 200 of the aforementioned embodiments is suspended. Exemplarily, this can be achieved using bolted connections, with the bolts passing through the suspension structure 2 and threadedly connected to the plug block 3. Furthermore, the electrical device 100 may also include other functional components, such as a control system, a power system, and a driving system, which may include wheels or tracks.

[0063] In summary, this application provides a suspension connection mechanism, a battery pack, and an electrical device. In the suspension connection mechanism, the relative positions of the beam protrusion structure and the suspension structure are fixed. A plug is inserted between the beam protrusion structure and the suspension structure, with a portion of the beam protrusion structure extending into the plug groove. The beam contact surface, the suspension connection surface, and the suspension contact surface all abut against the plug. When the plug is inserted into the space between the beam protrusion structure and the suspension structure, both the suspension structure and the beam protrusion structure form an interference fit with the plug, thereby fixing the relative positions of the plug, the beam protrusion structure, and the suspension structure for battery suspension installation. In the suspension connection mechanism of this application embodiment, simply inserting the plug between the beam structure and the suspension structure achieves a fixed connection between the plug and the beam structure, simplifying the installation process and significantly reducing the consumption of manpower and resources.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A suspension connection mechanism, characterized in that, include: A beam protrusion structure having at least one beam abutment surface; A suspension structure is disposed on one side of the beam protrusion structure, and the relative position of the suspension structure and the beam protrusion structure is fixed; the suspension structure includes a suspension connecting surface and a suspension protrusion disposed on the suspension connecting surface, the suspension protrusion having at least one suspension abutment surface; A stopper block is disposed between the beam protrusion structure and the suspension structure. The stopper block includes a stopper block groove, and at least a portion of the beam protrusion structure is located within the stopper block groove. The beam abutment surface, the suspension connection surface, and the suspension abutment surface all abut against the stopper block.

2. The suspension connection mechanism according to claim 1, characterized in that, It also includes a side beam structure, the suspension structure and the beam protrusion structure are both fixedly connected to the side beam structure, and there is a receiving space between the suspension structure and the side beam structure, and the plug is disposed in the receiving space.

3. The suspension connection mechanism according to claim 2, characterized in that, The plug includes a first plug surface, a second plug surface, a third plug surface, and a fourth plug surface; the second plug surface abuts against the beam contact surface, the third plug surface abuts against the suspension connection surface, and the fourth plug surface abuts against the suspension contact surface; the distance between the first plug surface and the third plug surface is less than the distance from the end of the beam protrusion structure away from the third plug surface to the third plug surface.

4. The suspension connection mechanism according to claim 3, characterized in that, The beam protrusion structure also includes multiple beam protrusions, which are located on the beam abutment surface.

5. The suspension connection mechanism according to claim 3, characterized in that, The plug also includes a plurality of recesses located on the surfaces of the third plug and the fourth plug.

6. The suspension connection mechanism according to claim 3, characterized in that, The angle between the surface of the third stopper and the surface of the fourth stopper is an obtuse angle, and the angle between the surface of the first stopper and the surface of the second stopper is an acute angle. Alternatively, the angle between the surface of the third stopper and the surface of the fourth stopper is an acute angle, and the angle between the surface of the first stopper and the surface of the second stopper is an obtuse angle.

7. The suspension connection mechanism according to claim 3, characterized in that, Along the extension direction of the beam structure, both ends of the plug have end faces; chamfers are provided between the surface of the first plug and the end face, between the surface of the second plug and the end face, between the surface of the third plug and the end face, and between the surface of the fourth plug and the end face.

8. The suspension connection mechanism according to claim 3, characterized in that, The bottom of the plug groove has a groove bottom surface, and the end of the beam protrusion structure near the surface of the third plug has a protruding top surface, with the groove bottom surface and the protruding top surface abutting against each other.

9. A battery pack, characterized in that, include: Battery module; A battery pack housing for accommodating the battery module, the battery pack housing comprising the suspension connection mechanism as described in any one of claims 1 to 8.

10. An electrical appliance, characterized in that, Includes the battery pack as described in claim 9.

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