Battery box body, battery pack and power utilization device

Abstract

The utility model relates to a battery box body, a battery pack and an electric device. The lifting lug assembly comprises a sliding rail which is connected with the edge beam and extends in the lengthwise direction of the edge beam; the lifting lug is arranged on the sliding rail in a sliding mode in the lengthwise direction; the position of the limiting block relative to the sliding rail in the lengthwise direction is adjustable, and the limiting block is used for limiting the sliding position of the lifting lug on the sliding rail; and the locking piece is used for locking or unlocking the limiting block and the sliding rail. When the position of the lifting lug needs to be adjusted to adapt to different electric devices, the lifting lug is operated to slide to the corresponding position on the sliding rail, the position of the limiting block relative to the sliding rail is adjusted to limit the lifting lug, and finally the limiting block and the sliding rail are locked through the locking piece. Compared with the mode that the position of the lifting lug on the battery box body is finely adjusted in a re-mold opening mode in the prior art, convenience and rapidness are achieved, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery box, 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] A power battery consists of a casing and battery cells. The battery cells are housed within the casing, which provides support and protection. To connect the power battery to the vehicle body, lifting lugs are installed on the outside of the casing, through which the power battery connects to the vehicle body. To accommodate the installation requirements of different vehicles (such as vehicles on the same platform), it is often necessary to fine-tune the position of the lifting lugs on the casing. In traditional technology, because the position of the lifting lugs on the casing is fixed, fine-tuning can only be achieved by creating a new mold, which is costly. Utility Model Content

[0004] Therefore, it is necessary to address the issue that traditional technologies require re-molding to fine-tune the position of the lifting lugs on the housing, resulting in high costs. A lower-cost battery housing, battery pack, and power supply device that can adjust the position of the lifting lugs on the housing is required.

[0005] On one hand, this application provides a battery housing, including:

[0006] Edge beam;

[0007] The lug assembly includes:

[0008] The slide rail is connected to the side beam and extends along the longitudinal direction of the side beam;

[0009] The lifting lug is slidably disposed on the slide rail along the longitudinal direction;

[0010] A limiting block, whose position relative to the slide rail in the longitudinal direction is adjustable, is used to limit the sliding position of the lug on the slide rail;

[0011] A locking element is used to lock or unlock the limiting block and the slide rail.

[0012] In one embodiment, the slide rail includes two first sliding parts and a connecting part. The two first sliding parts are arranged along the width direction of the side beam and connected by the connecting part. The two first sliding parts and the connecting part together form a guide groove extending along the longitudinal direction.

[0013] The lifting lug includes a second sliding part and a mating part that are connected to each other. The second sliding part is slidably mated with two first sliding parts, and the mating part is slidably disposed in the guide groove.

[0014] The limiting block is used to abut against the second sliding part from both ends in the longitudinal direction to limit the sliding position of the lug on the slide rail.

[0015] In one embodiment, the limiting block includes a fixing part and two limiting strips. The two limiting strips are arranged at a distance from each other and are both connected to the fixing part. The two limiting strips and the fixing part together form a limiting gap.

[0016] The two limiting strips are both inserted through the two first sliding parts along the width direction of the side beam. The second sliding part is accommodated in the limiting gap. The two limiting strips respectively abut against the second sliding part from both ends of the longitudinal direction. The locking member locks the fixing part onto the slide rail.

[0017] In one embodiment, the slide rail and the lifting lug are provided with a groove and / or a protrusion, the groove extending through the slide rail or the lifting lug along the longitudinal direction, and the groove forming an opening at one end in the width direction of the side beam;

[0018] The protrusion is slidably disposed in the groove along the longitudinal direction, and the groove and the protrusion cooperate to limit the lifting lug along the height and width directions of the side beam.

[0019] In one embodiment, the slide includes a first slide and a second slide;

[0020] The slide rail includes a first body and a first flange connected to each other, and the first flange and the first body form a first slide groove; the lifting lug includes a second body and a second flange connected to each other, and the second flange and the second body form a second slide groove.

[0021] Both the first and second slide grooves extend along the longitudinal direction, the first flange is slidably disposed in the second slide groove along the longitudinal direction, and the second flange is slidably disposed in the first slide groove along the longitudinal direction;

[0022] The first flange and the second flange form the protrusion.

[0023] In one embodiment, the locking element includes a bolt and a rivet nut, the rivet nut being inserted through the slide rail, and the bolt being inserted through the limiting block and the rivet nut to lock the limiting block to the slide rail.

[0024] In one embodiment, the battery housing includes multiple sets of the lifting lug assemblies, which are spaced apart from each other.

[0025] and / or

[0026] The lifting lug is provided with mounting holes for connecting to an external structure.

[0027] In one embodiment, the side beam, the slide rail, the limiting block, and the lifting lug are all made of aluminum alloy;

[0028] and / or

[0029] The lifting lug, the limiting block, and the locking component are all detachably connected to the slide rail.

[0030] On the other hand, this application also provides a battery pack, including battery cells and a battery housing as described above, wherein the battery cells are disposed within the battery housing.

[0031] In another aspect, this application also provides an electrical device, including the battery pack described above.

[0032] Compared with the prior art, this application has the following beneficial effects:

[0033] This application provides a battery housing, which includes a lifting lug assembly. The lifting lug assembly includes a slide rail, lifting lugs, a limiting block, and a locking component. When the position of the lifting lugs needs to be adjusted to accommodate different electrical devices, the lifting lugs are slid along the slide rail to the corresponding position, and the position of the limiting block relative to the slide rail is adjusted to limit the lifting lugs. Finally, the locking component locks the limiting block and the slide rail. Compared to the existing technology that involves re-molding to fine-tune the position of the lifting lugs on the battery housing, this method is more convenient, faster, and reduces costs. Attached Figure Description

[0034] Figure 1 A partial structural diagram of the battery housing provided in a preferred embodiment of this application;

[0035] Figure 2 for Figure 1 An exploded view of the battery housing shown;

[0036] Figure 3 for Figure 1 Another exploded view of the battery compartment shown;

[0037] Figure 4 for Figure 1 The diagram shows the structural connection between the side beams and slide rails of the battery box.

[0038] Figure 5 for Figure 1 The diagram shows the structure of the lifting lugs of the battery box.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Battery housing; 10. Side beam; 20. Lifting lug assembly; 21. Slide rail; 211. First sliding part; 2111. Through hole; 212. Connecting part; 213. Guide groove; 214. First main body; 215. First flange; 216. First slide groove; 22. Limiting block; 221. Fixing part; 222. Limiting strip; 223. Limiting gap; 23. Locking element; 231. Bolt; 232. Rivet nut; 24. Lifting lug; 241. Second sliding part; 242. Mating part; 243. Second main body; 244. Second flange; 245. Second slide groove; 246. Mounting hole. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] See Figure 1 One embodiment of this application provides a battery pack, which includes a battery housing 100 and battery cells. The battery cells are disposed inside the battery housing 100, and the battery housing 100 serves to support and protect the battery cells.

[0048] The battery pack 100 includes a side beam 10 and a lifting lug assembly 20. The lifting lug assembly 20 is connected to the side beam 10 and is used to connect to the main body of the electrical device. Specifically, when the battery pack is used in a vehicle, the lifting lug assembly 20 is used to connect to the vehicle body. It is understood that in some other embodiments, the type of electrical device is not limited.

[0049] It should be noted that the side beam 10 is a beam located at the edge of the battery box 100 and exposed to the outside. In some specific embodiments, when the battery box 100 is a hollow cuboid structure, all beams around the battery box 100 are side beams 10. It is understood that in other embodiments, the shape of the battery box 100 is not limited, and the shape and number of side beams 10 vary accordingly with the shape of the battery box 100.

[0050] The battery box 100 may include only one set of lifting lug assemblies 20 or multiple sets of lifting lug assemblies 20. When the battery box 100 includes multiple sets of lifting lug assemblies 20, the multiple sets of lifting lug assemblies 20 are arranged at intervals between each other. In some specific embodiments, when the battery box 100 is a hollow cuboid structure, the multiple sets of lifting lug assemblies 20 are respectively arranged on the side beams 10 around the battery box 100. The multiple sets of lifting lug assemblies 20 are connected to the main body of the electrical device to ensure the connection effect between the battery pack and the main body of the electrical device.

[0051] The lifting lug assembly 20 includes a slide rail 21, which is connected to the side beam 10 and extends along the longitudinal direction of the side beam 10. Specifically, the slide rail 21 is connected to the outer side of the side beam 10, which is the side of the side beam 10 facing away from the battery cell. It should be noted that the side beam 10 extends along the longitudinal direction, which is the length direction of the side beam 10. Figure 1 The X-direction. When the battery box 100 is a hollow cuboid structure, the longitudinal direction of the side beam 10 is either the length or width direction of the battery box 100. When the side beam 10 is a long side beam of the battery box 100, its longitudinal direction is the length direction of the battery box 100. When the side beam 10 is a short side beam of the battery box 100, its longitudinal direction is the width direction of the battery box 100. It can be seen that the longitudinal direction of the side beam 10 intersects with the height direction of the battery box 100; specifically, the longitudinal direction of the side beam 10 is perpendicular to the height direction of the battery box 100.

[0052] Continue reading Figure 1 The lifting lug assembly 20 also includes a lifting lug 24 and a limiting block 22. The lifting lug 24 is slidably disposed on the slide rail 21 along the longitudinal direction. The limiting block 22 is adjustable in position relative to the slide rail 21 in the longitudinal direction and is used to limit the sliding position of the lifting lug 24 on the slide rail 21. It should be noted that the limiting block 22 can not only limit the sliding of the lifting lug 24 in the positive longitudinal direction on the slide rail 21, but also limit the sliding of the lifting lug 24 in the opposite longitudinal direction on the slide rail 21.

[0053] The lifting lug assembly 20 also includes a locking member 23, which is used to lock the limiting block 22 and the slide rail 21. When the limiting block 22 and the slide rail 21 are locked, the position of the lifting lug 24 on the slide rail 21 along the longitudinal direction is locked. The locking member 23 can also unlock the limiting block 22 and the slide rail 21. When the limiting block 22 and the slide rail 21 are unlocked, the position of the limiting block 22 relative to the slide rail 21 in the longitudinal direction can be adjusted. The lifting lug 24 is used to connect to the main body of the electrical device. Optionally, the lifting lug 24 is provided with a mounting hole 246, through which the lifting lug 24 is connected to the main body of the electrical device.

[0054] With the above setup, when the battery pack needs to be installed on the main body of an electrical device, the lifting lug 24 slides on the slide rail 21 to a suitable position, and the position of the limiting block 22 relative to the slide rail 21 is adjusted to restrict the lifting lug 24 from continuing to slide on the slide rail 21. The locking member 23 locks the limiting block 22 and the slide rail 21. At this time, the lifting lug 24 and the slide rail 21 remain fixed. Connecting the lifting lug 24 to the main body of the electrical device can realize the installation of the battery pack and the main body of the electrical device. When the battery pack needs to be installed on the main body of another type or model of electrical device, the locking member 23 unlocks the limiting block 22, releasing the limitation block 22 from restricting the lifting lug 24. The lifting lug 24 is then slid on the slide rail 21 to a suitable position, and the position of the limiting block 22 relative to the slide rail 21 is adjusted to restrict the lifting lug 24 from continuing to slide on the slide rail 21. The locking member 23 locks the limiting block 22 and the slide rail 21. At this time, the lifting lug 24 and the slide rail 21 remain fixed. Connecting the lifting lug 24 to the main body of the electrical device enables the installation of the battery pack on the main body of another electrical device.

[0055] When the position of the lifting lug 24 needs to be adjusted to accommodate different electrical devices, the lifting lug 24 is slid along the slide rail 21 to the corresponding position. The position of the limiting block 22 relative to the slide rail 21 is then adjusted to limit the lifting lug 24. Finally, the locking member 23 locks the limiting block 22 and the slide rail 21. Compared to the existing method of fine-tuning the position of the lifting lug 24 on the battery box 100 by re-molding, this method is more convenient, faster, and reduces costs.

[0056] In some embodiments, the slide rail 21 and the side beam 10 are integrally formed. It is understood that in other embodiments, the slide rail 21 and the side beam 10 may also be formed separately and then assembled together, which is not limited here.

[0057] Optionally, the side beam 10, slide rail 21, limiting block 22, and lifting lug 24 are all made of aluminum alloy. Specifically, the aluminum alloy used for the side beam 10, slide rail 21, limiting block 22, and lifting lug 24 is 6-series aluminum alloy. Of course, in some other embodiments, the type of material used for the side beam 10, slide rail 21, limiting block 22, and lifting lug 24 is not limited.

[0058] Furthermore, the lifting lug 24, the limiting block 22, and the locking element 23 are all detachably connected to the slide rail 21, so that the lifting lug 24, the limiting block 22, and the locking element 23 can be removed from the slide rail 21 for after-sales maintenance.

[0059] In some embodiments, see Figures 2-4 The slide rail 21 includes a connecting portion 212 and two first sliding portions 211. The two first sliding portions 211 are arranged along the width direction of the side beam 10 and connected by the connecting portion 212. The two first sliding portions 211 and the connecting portion 212 together form a guide groove 213 extending along the longitudinal direction. The width direction of the side beam 10 is the direction of the line connecting the inner surface of the side beam 10 facing the battery cell and the outer surface facing away from the battery cell. Figure 1 In the Y direction, the lifting lug 24 includes a second sliding part 241 and a mating part 242 connected to each other. The second sliding part 241 is slidably engaged with two first sliding parts 211, and the mating part 242 is slidably disposed in the guide groove 213. The limiting block 22 is used to abut against the second sliding part 241 from both ends in the longitudinal direction to limit the sliding position of the lifting lug 24 on the slide rail 21. With this configuration, the second sliding part 241 is slidably engaged with the two first sliding parts 211, and the mating part 242 is slidably disposed in the guide groove 213 to ensure the sliding effect of the lifting lug 24 on the slide rail 21.

[0060] Further reading Figure 3 The limiting block 22 includes a fixing part 221 and two limiting strips 222. The two limiting strips 222 are arranged at intervals and are both connected to the fixing part 221. The two limiting strips 222 and the fixing part 221 together form a limiting gap 223. The two limiting strips 222 pass through the two first sliding parts 211 along the width direction of the side beam 10. The second sliding part 241 is accommodated in the limiting gap 223. The two limiting strips 222 abut against the second sliding part 241 from both ends in the longitudinal direction. The locking member 23 locks the fixing part 221 onto the slide rail 21. Thus, when the lifting lug 24 slides to a suitable position on the slide rail 21, the two limiting strips 222 of the limiting block 22 pass through the two first sliding parts 211, and the second sliding part 241 can be accommodated in the limiting gap 223. The two limiting strips 222 abut against the second sliding part 241 from both ends in the longitudinal direction to limit the lifting lug 24. After the locking member 23 locks the fixing part 221 and the slide rail 21, the position of the lifting lug 24 and the slide rail 21 in the longitudinal direction remains fixed.

[0061] It should be noted that, generally, in order to facilitate the insertion of the limiting strip 222 onto the first sliding part 211, each first sliding part 211 is pre-formed with multiple sets of insertion holes 2111, each set of insertion holes 2111 including two insertion holes 2111. The multiple sets of insertion holes 2111 of each first sliding part 211 are arranged sequentially along the longitudinal direction to facilitate the adjustment of the position of the limiting block 22 relative to the slide rail 21 in the longitudinal direction.

[0062] In some embodiments, the slide rail 21 and the lifting lug 24 are provided with grooves and / or protrusions. The groove extends through the slide rail 21 or the lifting lug 24 along the longitudinal direction, and an opening is formed at one end of the groove in the width direction of the side beam 10. The protrusion slides within the groove along the longitudinal direction, and the groove and the protrusion cooperate to limit the lifting lug 24 along the height and width directions of the side beam 10. Since the groove extends through the slide rail 21 or the lifting lug 24 along the longitudinal direction, and an opening is formed at one end of the groove in the width direction of the frame, the lifting lug 24 can be installed on or removed from the slide rail 21 from both ends in the longitudinal direction, facilitating the installation and removal of the lifting lug 24. Meanwhile, since the sliding groove and the protrusion can limit the lifting lug 24 in the width and height directions of the side beam 10, when the limiting block 22 limits the lifting lug 24 and the locking member 23 locks the limiting block 22 and the slide rail 21, the lifting lug 24 cannot move relative to the slide rail 21 in any direction, thus ensuring the fixing effect of the lifting lug 24 on the slide rail 21.

[0063] Among them, the longitudinal direction, width direction and height direction of the side beam 10 intersect each other, and the height direction of the side beam 10 is also the height direction of the battery box 100.

[0064] In some implementations, see [reference] Figure 4 and Figure 5The slide rail 21 includes a first slide rail 216 and a second slide rail 245. The slide rail 21 includes a first main body 214 and a first flange 215 connected to each other, with the first flange 215 and the first main body 214 forming the first slide rail 216. The lifting lug 24 includes a second main body 243 and a second flange 244 connected to each other, with the second flange 244 and the second main body 243 forming the second slide rail 245. Both the first slide rail 216 and the second slide rail 245 extend longitudinally. The first flange 215 is slidably disposed in the second slide rail 245, and the second flange 244 is slidably disposed in the first slide rail 216. The first flange 215 and the second flange 244 form protrusions. Thus, when the lifting lug 24 is installed on the slide rail 21, the second flange 244 of the lifting lug 24 is accommodated in the first slide groove 216, and the first flange 215 of the slide rail 21 is accommodated in the second slide groove 245. The second flange 244, as the first protrusion, slides in cooperation with the first slide groove 216, and the first flange 215, as the second protrusion, slides in cooperation with the second slide groove 245, so that the lifting lug 24 can slide relative to the slide rail 21 in the longitudinal direction, and can restrict the movement of the lifting lug 24 relative to the slide rail 21 in the width and height directions of the side beam 10.

[0065] Furthermore, the two first sliding portions 211 and the connecting portion 212 together form the first body 214 of the slide rail 21. Each first sliding portion 211 includes a first flange 215, at which point two first sliding grooves 216 and two second protrusions are formed on the slide rail 21. In order to fit the two first sliding grooves 216 and the two second protrusions, the lifting lug 24 is provided with two second flanges 244 and two second sliding grooves 245.

[0066] It should be understood that in some other embodiments, the number of the first groove 216 and the second protrusion provided on the slide rail 21 is not limited. For example, the slide rail 21 may be provided with only one first groove 216 and one second protrusion. At the same time, the number of the second groove 245 and the second flange 244 provided on the lifting lug 24 is also not limited.

[0067] It is conceivable that in other embodiments, the slide rail 21 may only have a groove and the lug 24 may only have a protrusion, or the slide rail 21 may only have a protrusion and the lug 24 may only have a groove.

[0068] In some embodiments, see further reference. Figure 2 and Figure 3 The locking component 23 includes a bolt 231 and a rivet nut 232. The rivet nut 232 passes through the slide rail 21, and the bolt 231 passes through the fixing part 221 of the limiting block 22 and the rivet nut 232 to lock the limiting block 22 and the slide rail 21.

[0069] In other embodiments, the type of locking member 23 is not limited, as long as it can lock and unlock the limiting block 22 and the slide rail 21. For example, the locking member 23 may only include a bolt 231, which passes through the fixing part 221 of the limiting block 22 and the slide rail 21 to lock the limiting block 22 and the slide rail 21.

[0070] Another embodiment of this application also provides a battery housing 100, which belongs to the above-mentioned battery pack.

[0071] Another embodiment of this application provides an electrical device including the battery described above. Since the battery described above has beneficial effects, the electrical device including the battery has the same beneficial effects, which will not be described in detail here.

[0072] Optionally, the electrical device is a vehicle, which can be a gasoline vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc.

[0073] It is worth noting that, for pure electric vehicles, the aforementioned batteries can serve as a driving power source, thereby replacing fossil fuels to provide driving power.

[0074] In other embodiments, the type of electrical device is not limited. For example, the electrical device can also be a ship, spacecraft, electric toy, power tool, energy storage device, amusement equipment, elevator, and lifting equipment, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices can be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment can be a carousel, a drop tower, etc. This application does not impose any special limitations on the above-mentioned electrical devices.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery case characterized by comprising: The utility model relates to a lifting lug assembly (20) comprising: a side beam (10); a slide rail (21) connected to the side beam (10) and extending along a longitudinal direction of the side beam (10); a lifting lug (24) slidably arranged on the slide rail (21) along the longitudinal direction; a limiting block (22) adjustable in position relative to the slide rail (21) in the longitudinal direction and used for limiting the sliding position of the lifting lug (24) on the slide rail (21); a locking member (23) used for locking or unlocking the limiting block (22) and the slide rail (21). The slide rail (21) comprises two first sliding parts (211) and a connecting part (212), the two first sliding parts (211) are arranged along a width direction of the side beam (10) and connected through the connecting part (212), and the two first sliding parts (211) and the connecting part (212) jointly form a guide groove (213) extending along the longitudinal direction; 2. The battery pack of claim 1, wherein The lifting lug (24) comprises a second sliding part (241) and a matching part (242) connected to each other, the second sliding part (241) is in sliding cooperation with the two first sliding parts (211), and the matching part (242) is slidably arranged in the guide groove (213); The limiting block (22) is used for abutting against the second sliding part (241) from both ends of the longitudinal direction respectively, so as to limit the sliding position of the lifting lug (24) on the slide rail (21). The limiting block (22) comprises a fixed part (221) and two limiting strips (222), the two limiting strips (222) are oppositely and spacedly arranged and connected to the fixed part (221), and the two limiting strips (222) and the fixed part (221) jointly form a limiting gap (223); 3. The battery pack of claim 2, wherein, The two limiting strips (222) are both arranged in the two first sliding parts (211) along the width direction of the side beam (10), the second sliding part (241) is accommodated into the limiting gap (223), the two limiting strips (222) abut against the second sliding part (241) from both ends of the longitudinal direction respectively, and the locking member (23) locks the fixed part (221) on the slide rail (21). The slide rail (21) and the lifting lug (24) are provided with a sliding groove and / or a protrusion, the sliding groove is arranged through the slide rail (21) or the lifting lug (24) along the longitudinal direction, and one end of the sliding groove in the width direction of the side beam (10) forms an opening; 4. The battery pack of claim 1, wherein, The protrusion is slidably arranged in the sliding groove along the longitudinal direction, and the sliding groove and the protrusion cooperate to limit the lifting lug (24) in the height direction and the width direction of the side beam (10). The sliding groove comprises a first sliding groove (216) and a second sliding groove (245).

5. The battery pack of claim 4, wherein, ​ The slide rail (21) comprises a first main body (214) and a first flange (215) connected with each other, and the first flange (215) and the first main body (214) form the first sliding groove (216); the lug (24) comprises a second main body (243) and a second flange (244) connected with each other, and the second flange (244) and the second main body (243) form the second sliding groove (245); The first sliding groove (216) and the second sliding groove (245) both extend along the longitudinal direction, the first flange (215) is arranged in the second sliding groove (245) and slides along the longitudinal direction, and the second flange (244) is arranged in the first sliding groove (216) and slides along the longitudinal direction; The first flange (215) and the second flange (244) form the protrusion.

6. The battery pack of claim 1, wherein, The locking member (23) comprises a bolt (231) and a pull rivet nut (232), the pull rivet nut (232) is arranged in the slide rail (21), and the bolt (231) is arranged in the limiting block (22) and the pull rivet nut (232) to lock the limiting block (22) and the slide rail (21).

7. The battery pack of claim 1, wherein, The battery box comprises a plurality of lug assemblies (20) arranged at intervals; And / or The lug (24) is provided with a mounting hole (246) for connecting with an external structure.

8. The battery pack of claim 1, wherein, The side beam (10), the slide rail (21), the limiting block (22) and the lug (24) are all made of aluminum alloy; And / or The lug (24), the limiting block (22) and the locking member (23) are all detachably connected with the slide rail (21).

9. A battery pack, characterized by, A battery cell and a battery box as claimed in any one of claims 1-8, wherein the battery cell is arranged in the battery box.

10. An electrical device, characterized by A battery pack as claimed in claim 9. A battery pack as claimed in claim 9.

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