A lifting device for transporting battery packs

Abstract

The present invention provides a handling sling for hoisting a battery box, the structure comprising: an adjusting portion movably arranged on a fixing portion, and a locking portion connected to the fixing portion and switchable to be locked or unlocked with a lock plate on the top surface of the battery box, the fixing portion being located on one side of the battery box and extending along the height direction of the battery box, the adjusting portion being arranged on the fixing portion and being located on the side away from the battery box; the locking portion being arranged on the top end of the fixing portion and extending toward the direction of the battery box, the mutual cooperation between the fixing portion and the adjusting portion facilitates the adjustment of the working space of the entire handling sling to adapt to battery boxes of different models and specifications, and can adapt to battery packs of various specifications and models, thereby reducing the cost of battery pack handling operations while improving efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of material transportation, and more particularly to a handling sling suitable for battery packs of different specifications and models. Background Art

[0002] With growing calls for environmental protection and energy conservation, new energy vehicle projects have become a key development project for many countries and major automobile companies. The biggest challenge facing the development of electric vehicles lies in battery technology. In recent years, my country's electric vehicle market has seen rapid growth, and battery housing handling equipment has also been undergoing structural innovations as product upgrades have progressed.

[0003] In the complex battery pack assembly process involved in the production of electric vehicles, the assembled lower shell of the battery pack needs to be moved to a pallet for the next process step, and this step requires a lifting device. However, the power battery pack is large and difficult to fix. The current manual lifting device generally uses a sling + ring to connect the power battery pack to the lifting equipment for lifting. Ordinary rings will damage the edge lifting holes of the power battery pack and make it difficult to keep the power battery pack level during lifting. Ordinary rings will damage the power battery pack and cause the power battery pack to leak. Commonly used metal rings cannot guarantee insulation, posing a safety hazard to workers. The large size of the power battery pack often hinders workers from grabbing the sling, causing inconvenience and low work efficiency. Small parts of the tooling are easy to lose at the processing site.

[0004] At the same time, due to the different structures of different battery packs, the handling hoists between different battery packs cannot be shared.

[0005] Therefore, there is an urgent need for a battery pack handling hoist to solve the above problems existing in the battery pack handling process. The hoist can be well applied to battery packs, especially pure electric battery packs. The battery pack handling process is convenient for positioning and simple to operate. The battery pack is more stable and safe when being transported. The hoist can adapt to battery packs of various specifications and models, thereby reducing the cost of battery pack handling operations while improving efficiency. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a battery pack handling sling. Through the interaction of a fixed portion and an adjustment portion, the entire handling sling's operating space can be adjusted to accommodate battery boxes of different models and specifications. The entire handling process is convenient and easy to locate, and the handling of battery packs is more stable and safe. The sling can accommodate battery packs of various specifications and models, reducing the cost of battery pack handling operations while improving efficiency.

[0007] According to a first aspect of an embodiment of the present invention, a battery pack transport hoist is provided for hoisting a battery case, comprising: an adjusting portion movably arranged with a fixing portion, and a locking portion connected with the fixing portion and switchable to be locked or unlocked with a lock plate on the top surface of the battery case, wherein the fixing portion is a frame-like rectangular structure formed by connecting at least two groups of fixing units, the fixing portion is located on one side of the battery case and extends in the height direction of the battery case, the adjusting portion is arranged on the fixing portion and is located on the side away from the battery case; the locking portion is arranged at the top end of the fixing portion and extends toward the battery case.

[0008] The battery pack transport sling according to the embodiment of the present invention facilitates the adjustment of the working space of the entire transport sling through the mutual cooperation of the fixing part and the adjusting part to adapt to battery boxes of different models and specifications. The locking part and the lock plate are switched between locked and unlocked to achieve the releasable fastening of the transport sling and the battery box to realize the rapid transport of the battery box. The entire transport process is convenient for positioning and simple to operate. The battery pack is more stable and safe when transported, and can adapt to battery packs of various specifications and models, thereby reducing the cost of battery pack transport operations while improving efficiency.

[0009] In some embodiments, the locking portion includes a fixed base plate connected to the fixing portion; a rotary lock rotatably arranged through the fixed base plate; and a driving cylinder arranged on the fixed base plate and drivingly connected to the rotary lock.

[0010] In some embodiments, the locking portion also includes a connecting rod arranged between the fixed units for realizing drive linkage, one end of the connecting rod is movably connected to the drive cylinder, and the other end arranged oppositely is driven to connect to a rotary lock on another fixed unit.

[0011] In some embodiments, the locking portion further includes a rotation mechanism disposed between the drive cylinder and the rotary lock.

[0012] In some embodiments, the rotating mechanism includes a chuck, a transmission sleeve, and a drive plate that are integrally connected to the rotary lock and move together, wherein one end of the drive plate is connected to the movable end of the drive cylinder, and the other end oppositely arranged is connected to the chuck through the transmission sleeve.

[0013] In some embodiments, the locking portion further comprises a locking mechanism disposed on a fixed floor and releasably locked with the rotating mechanism.

[0014] In some embodiments, the locking mechanism includes a push pin, a convex ring, an elastic member, and a screw; the convex ring is fixed to one end of the push pin and is located above the fixed base plate, and the other end, which is arranged oppositely, extends downward through the fixed base plate and is movably arranged with the fixed base plate; the elastic member is sleeved on the top end of the push pin and is movably clamped to the top surface of the fixed base plate through the screw; the convex ring is detachably clamped to the chuck of the rotating mechanism.

[0015] In some embodiments, the locking portion further includes a sensor disposed on a fixed base plate, and the sensor includes a positioning sensor disposed at the top end of the locking mechanism.

[0016] In some embodiments, the fixing unit includes a fixing bracket; a lifting bracket and a connecting bracket that are telescopically connected to the fixing bracket and are separately arranged at both ends of the fixing bracket.

[0017] In some embodiments, the adjustment portion includes a lug provided on a fixing bracket, a fixing shaft passing through the lug, and a support point provided on a connecting bracket between the fixing units and extending in a direction away from the battery box.

[0018] The transport sling provided in the above embodiment of the present invention facilitates the adjustment of the working space of the entire transport sling to adapt to battery boxes of different models and specifications through the mutual cooperation of the fixing part and the adjusting part, and realizes the releasable fastening of the transport sling and the battery box into one by switching the locking part and the lock between locking or unlocking, so as to quickly realize the transport of the battery box. The entire transport process is convenient for positioning and simple to operate. The battery pack is more stable and safe when transporting, and can adapt to battery packs of various specifications and models, thereby reducing the cost of battery pack transport operations and improving efficiency. The sliding friction is converted into rolling friction through the movably connected support rollers when the battery box is hoisted, thereby realizing flexible protection of the battery box and avoiding the hidden danger of power battery pack leakage caused by damage to the battery pack. When the lifting frame and the fixed bracket fail to connect during the transport of the battery box, the battery box is subjected to electrical shock during the lifting process. The reaction force of the battery box causes the lifting frame to retract into the inside of the fixed bracket, resulting in the shortening of the force fulcrum of the battery box and the risk of overturning. The entire handling operation is safe and stable, and the adjustment is convenient and easy, which solves the problem that the power battery pack is difficult to keep level during lifting; the chuck, transmission shaft sleeve, and drive plate are set, the stability of the transmission of a single fixed unit can be achieved, and the stability and smoothness of the transmission of adjacent fixed units by the same drive cylinder are ensured by setting the connecting rod between the transmission shaft sleeves of adjacent fixed units and adjusting it to be adjustable, thereby ensuring the reliability of locking or unlocking between the locking part and the battery box; when the rotary lock is locked and the battery box is lifted, the top pin is moved down together with the convex ring due to the action of elastic force, and the convex ring is stuck with the chuck, thereby realizing mechanical restriction of the rotary lock, so that the rotary lock will not fall off during the handling operation of the hoist, thereby realizing mechanical locking of the entire transmission mechanism.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the working principle of a battery pack handling sling according to an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of a lifting device for transporting a battery pack according to an embodiment of the present invention;

[0023] Figure 3Another schematic diagram of a battery pack handling sling according to an embodiment of the present invention;

[0024] Figure 4 Another schematic diagram of a battery pack handling sling according to an embodiment of the present invention;

[0025] Figure 5 Another schematic diagram of a battery pack handling sling according to an embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the structure of the locking mechanism of the handling sling for battery packs according to an embodiment of the present invention.

[0027] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0029] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0030] Reference below Figures 1 to 6 A lifting device for transporting a battery pack according to an embodiment of the present invention is described.

[0031] like Figure 1 As shown, the battery pack handling hoist of an embodiment of the present invention is used to lift and transport the battery case 200. The top surface of the battery case 200 is machined with a groove for mounting a fixed lock plate 210. The handling hoist 100 is releasably fastened to the battery case 200 by locking or unlocking the lock plate 210, thereby facilitating the handling of the battery case 200.

[0032] like Figures 2 to 4As shown, the transport sling 100 includes an adjusting portion 20 movably arranged with the fixing portion 10, and a locking portion 30 connected to the fixing portion 10 and switchable to be locked or unlocked with the lock plate 210, wherein the fixing portion 10 is located on one side of the battery box 200 and extends along the height direction of the battery box 200, the adjusting portion 20 is arranged on the fixing portion 10, and is located on the side away from the battery box 200; the locking portion 30 is arranged at the top end of the fixing portion 10 and extends toward the direction of the battery box 200. Therefore, through the mutual cooperation of the fixing part 10 and the adjusting part 20, the working space of the entire transport sling 100 is facilitated to adjust to battery boxes 200 of different models and specifications. By switching the locking part 30 and the locking plate 210 between locking or unlocking, the transport sling 100 and the battery box 200 are releasably fastened together to quickly realize the transportation of the battery box 200. The entire transportation process is convenient for positioning and simple to operate. The battery pack is more stable and safe when being transported, and it can adapt to battery packs of various specifications and models, reducing the cost of battery pack transportation operations while improving efficiency.

[0033] In some embodiments of the present invention, Figure 2 As shown, the fixing portion 10 is a frame-like rectangular structure formed by connecting at least two sets of fixing units. The fixing units include a fixing bracket 11; a lifting frame 12 and a connecting frame 13 that are telescopically connected to the fixing bracket 11 and are located at both ends of the fixing bracket 11. Thus, the working space of the fixing portion 10 can be easily adjusted by the telescopic lifting frame 12 and connecting frame 13. Preferably, the lifting frame 12 is located at the bottom end of the fixing bracket 11, and the connecting frame 13 is located at the top end of the fixing bracket 11. They are connected to the locking portion 30 as a whole and move together. By adjusting the fixed position of the lifting frame 12, connecting frame 13 and fixing bracket 11, the distance between the lifting frame 12 and connecting frame 13 can be easily controlled, and the height of the locking portion 30 can be adjusted, thereby achieving the height adjustment of the lockable battery box 200. The space for lifting and loading can accommodate battery packs of various specifications and models, reducing the cost of battery pack handling operations while improving efficiency.

[0034] Furthermore, to prevent damage to the outer surface of the battery case 200 during transport and to provide flexible protection for the outer shell of the battery case 200, the lifting frame 12 further includes a support roller 121 disposed at an end away from the fixed bracket 11 and movably connected thereto. Preferably, the support roller 121 is detachably fixed to the lifting frame 12 via a bracket and extends toward the battery case 200. Thus, the movably connected support roller converts sliding friction into rolling friction during hoisting of the battery case, achieving flexible protection for the battery case and avoiding the potential risk of power battery pack leakage caused by damage to the battery pack.

[0035] In view of the fact that the current battery packs are large in size and weight, in order to ensure safety during transportation, Figure 4 As shown, the fixing portion 10 also includes a limiting mechanism 14, which includes a first limiting block 141 provided on the side of the fixing bracket 11 and at least two second limiting blocks 142 provided on the lifting frame 12. Preferably, the first limiting block 141 is provided on the inner side of the fixing bracket 11 facing the battery case 200, and is located at the end where the fixing bracket 11 connects to the connecting frame 13. In other words, when the transport sling 100 and the battery case 200 are locked, the first limiting block 141 is sandwiched between them. This prevents the transport sling 100 from damaging the battery case 200 during positioning. Furthermore, the first limiting block 141 facilitates rapid positioning between the transport sling 100 and the battery case 200, improving operational efficiency. Furthermore, the two second limiting blocks 141 are spaced apart and disposed at equal height on opposite sides of the lifting frame 12 to ensure that the lifting frame 12 and the fixing bracket 11 can withstand stable forces in the event of a connection failure. Preferably, the second limit block 141 is arranged on the end side of the lifting frame 12 close to the connection end with the fixed bracket 11 to avoid the risk that when the connection between the lifting frame 12 and the fixed bracket 11 fails during the transportation of the battery box 200, the lifting frame 12 will be retracted into the interior of the fixed bracket 11 under the reaction force of the battery box 200 during the lifting process, causing the force fulcrum of the battery box 200 to become shorter and easy to flip over. The entire transportation operation process is safe and stable, and the adjustment is convenient and easy, which solves the problem of the power battery pack being difficult to keep level during lifting.

[0036] In some embodiments of the present invention, Figure 2 As shown, the adjustment part 20 includes a lug provided on the fixed bracket 11, the lug is penetrated by a fixed shaft 21, and a support point 22 provided on the connecting bracket between the fixed units and extending in the direction away from the battery box 200. Preferably, the fixed shaft 21 is provided at one end of the fixed bracket 11 close to the connecting bracket 13, and the support point 22 is provided on the connecting bracket away from the connecting bracket 13. Thus, an external lifting device, such as a crane or a forklift, is connected to the fixed shaft 21 to provide an upward lifting force, which is locked to the battery box 200 through the locking part 30 at the top, and works together with the support roller 121 at the bottom end of the lifting frame 12 to achieve a stable lifting of the battery box 200. Preferably, the length of the support point 22 is adjustable, so as to achieve the adjustment of the pitch angle of the battery box 200 after lifting.

[0037] In summary, through the combined effect of the set fixed axis, support points, and support rollers on the lifting frame, the battery box can be stably hoisted. By setting the support points to be adjustable in length, the pitch angle of the battery box after hoisting can be adjusted extremely conveniently. The tilt angle of the battery box during transportation can be flexibly controlled to avoid overflow of the solution inside the battery box, thereby ensuring safety during the hoisting process.

[0038] In some embodiments of the present invention, Figures 2 to 6 As shown, the locking portion 30 includes a fixed base plate 31 connected to the fixing portion 10; a rotary lock 32 rotatably disposed through the fixed base plate 31; and a drive cylinder 33 disposed on the fixed base plate 31 and drivingly connected to the rotary lock 32. Thus, the drive cylinder 33 drives the rotary lock 32 to change its angle, thereby switching the rotary lock 32 and the lock plate 210 between locking and unlocking, thereby completing the locking and unlocking of the locking portion 30 and the battery case 200.

[0039] Preferably, to ensure a secure lock with the battery case 200, the locking portion 30 further includes a connecting rod 34 disposed between the fixing units for driving the linkage. One end of the connecting rod 34 is movably connected to the drive cylinder 33, and the other end, disposed oppositely, is driven to connect with the rotary lock 32 on another fixing unit. Thus, through the connecting rod 33, the same drive cylinder 33 can simultaneously drive the rotary locks 32 on different fixing units, thereby ensuring a secure lock between the entire fixing portion 10 and the battery case 200.

[0040] In some embodiments of the present invention, in order to achieve reliability in locking or unlocking, the locking portion 30 further includes a rotating mechanism 35 disposed between the drive cylinder 33 and the rotary lock 32. Specifically, the rotating mechanism 35 includes a chuck 351, a transmission sleeve 352, and a drive plate 353 that are integrally connected to the rotary lock 32 and move together, wherein one end of the drive plate 353 is connected to the movable end of the drive cylinder 33, and the other end, which is arranged oppositely, is connected to the chuck 351 through the transmission sleeve 352. Preferably, in order to ensure the smoothness of the transmission and facilitate the debugging and maintenance of the entire transmission system, the drive plate 353 is adjustable to the transmission sleeve 352. Furthermore, the connecting rod 34 is connected to the drive plate 353 of the adjacent fixed unit and is adjustably connected to the drive plate 353.

[0041] Therefore, the rotation mechanism provided by the present invention can achieve the stability of the transmission of a single fixed unit through the provided chuck, transmission shaft sleeve, and drive plate. By arranging the connecting rod between the transmission shaft sleeves of adjacent fixed units and adjustably connecting them, the stability and smoothness of the transmission of adjacent fixed units by the same drive cylinder are ensured, thereby ensuring the reliability of locking or unlocking between the locking part and the battery box.

[0042] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the locking portion 30 further includes a locking mechanism 36 disposed on the fixed floor 31 and releasably locked to the rotating mechanism 35. When the rotating mechanism 35 drives the rotary lock 32 to lock with the lock plate 210 on the battery box 200, the locking mechanism 36 mechanically limits the transmission mechanism 35, preventing malfunctions due to misoperation and ensuring that the transport sling 100 does not fall off during transport. Specifically, the locking mechanism 36 includes a push pin 361, a protruding ring 362, an elastic member 363, and a screw 364. The protruding ring 362 is fixed to one end of the push pin 361 and is located above the fixed base plate 31. The other end, which is arranged opposite to the push pin 361, extends downward through the fixed base plate 31 and is movably arranged with the fixed base plate 31. The elastic member 363 is sleeved on the top of the push pin 361 and is movably fixed to the top surface of the fixed base plate 31 through the screw 364. The protruding ring 362 is detachably engaged with the chuck 351 of the rotating mechanism 35. Therefore, when the rotary lock is locked and the battery box is lifted, the push pin is moved downward together with the protruding ring due to the elastic force, and the protruding ring is engaged with the chuck, thereby achieving mechanical restriction on the rotary lock, preventing the rotary lock from falling off during the operation of transporting the sling, and achieving mechanical locking of the entire transmission mechanism.

[0043] Preferably, in order to achieve reliability of mechanical locking, the chuck 351 is processed into a disc shape, and at least one groove adapted to the convex ring 362 is processed on its outer circumference.

[0044] In addition, the protruding ring 362 can be a separately processed part, or can be formed on the ejector pin 361 .

[0045] Furthermore, to improve handling efficiency, the locking portion 30 further includes a sensor 37 mounted on the fixed base plate 31. This sensor 37 comprises a positioning sensor 371 mounted at the top of the locking mechanism 36, located above the top surface of the ejector pin 361. When the lifting device is moved above the battery case, the fixed portion is controlled to move downward, inserting the rotary lock into the locking plate of the battery case. When the ejector pin of the locking mechanism is engaged by the battery case, the positioning sensor generates a signal that is fed back to the control unit. The control unit then issues a command to the actuator, which drives the cylinder to execute the command, driving the rotating mechanism to rotate the rotary lock, thereby locking the battery case.

[0046] In order to achieve intelligent control, the sensor 37 also includes a locking sensor 372 and an unlocking sensor 373 (marked in the figure). The locking sensor 372 and the unlocking sensor 373 are used to detect and provide feedback on the locking mechanism 36 to provide intelligence, stability and reliability to the entire handling sling system.

[0047] In addition, in some embodiments of the present invention, the driving cylinder 33 can be one of a pneumatic cylinder, a hydraulic cylinder, an electric driving cylinder, or a combination of several of them. As for the positional relationship of the specific driving cylinder or other structural shapes that achieve the same function, this should be easy for those skilled in the art to conceive, so it will not be described here one by one.

[0048] In addition, in some embodiments of the present invention, a control system is provided that detects and receives signals from positioning sensors, locking sensors, and unlocking sensors, and feeds back and issues relevant instructions. This should be easy to conceive for those skilled in the art, so it will not be described in detail here.

[0049] In summary, the transport sling provided in the above embodiments of the present application facilitates the adjustment of the working space of the entire transport sling through the mutual cooperation of the fixing part and the adjusting part to adapt to battery boxes of different models and specifications. By switching the locking part and the lock between locked or unlocked, the transport sling and the battery box are releasably fastened together, and the battery box is quickly transported. The entire transport process is convenient for positioning and simple to operate. The battery pack is more stable and safe when transporting, and can adapt to battery packs of various specifications and models, thereby reducing the cost of battery pack transport operations and improving efficiency. The movably connected support rollers convert sliding friction into rolling friction when the battery box is hoisted, thereby achieving flexible protection of the battery box and avoiding the hidden danger of power battery pack leakage caused by damage to the battery pack. When the lifting frame and the fixed bracket fail to connect during the transport of the battery box, the battery box is subjected to the lifting process. The reaction force of the battery box causes the lifting frame to retract into the inside of the fixed bracket, resulting in the shortening of the force fulcrum of the battery box and the risk of overturning. The entire handling operation is safe and stable, and the adjustment is convenient and easy, which solves the problem that the power battery pack is difficult to keep level during lifting; the chuck, transmission shaft sleeve, and drive plate are set, the stability of the transmission of a single fixed unit can be achieved, and the stability and smoothness of the transmission of adjacent fixed units by the same drive cylinder are ensured by setting the connecting rod between the transmission shaft sleeves of adjacent fixed units and adjusting it to be connected thereto, thereby ensuring the reliability of locking or unlocking between the locking part and the battery box; when the rotary lock is locked and the battery box is lifted, the ejector pin is moved down together with the convex ring due to the action of the elastic force, and the convex ring is stuck with the chuck, thereby realizing mechanical restriction of the rotary lock, so that the rotary lock will not fall off during the handling operation of the hoist, thereby realizing mechanical locking of the entire transmission mechanism.

[0050] In the description of the present invention, it should be understood that the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0051] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A battery pack handling hoist for hoisting a battery box (200), characterized in that: include: An adjusting portion (20) movably arranged with the fixing portion (10), and a locking portion (30) connected to the fixing portion (10) and capable of being locked or unlocked by a lock plate (210) on the top surface of the battery box (200), wherein the fixing portion (10) is a frame-like rectangular structure formed by connecting at least two groups of fixing units, the fixing portion (10) is located on one side of the battery box (200) and extends in the height direction of the battery box (200), the adjusting portion (20) is arranged on the fixing portion (10) and is located on the side away from the battery box (200); the locking portion (30) is arranged at the top of the fixing portion (10) and extends toward the battery box (200); The fixing unit comprises a fixing bracket (11); a lifting bracket (12) and a connecting bracket (13) which are telescopically connected to the fixing bracket (11) and are respectively arranged at both ends of the fixing bracket (11); The adjusting portion (20) includes a lug provided on the fixing bracket (11), the lug having a fixing shaft (21) extending therethrough, and a supporting point (22) provided on the connecting bracket between the fixing units and extending in a direction away from the battery box (200); The lifting frame is located at the bottom end of the fixed bracket, and the connecting frame is located at the top end of the fixed bracket, connected to the locking part as a whole, and moved together; the lifting frame also includes a support roller arranged at the end away from the fixed bracket and maintaining a movably connected state, the support roller extends toward the direction of the battery box, and the sliding friction is converted into rolling friction when the battery box is hoisted through the movably connected support roller; the fixed shaft is arranged at one end of the fixed bracket close to the connecting frame, and the support point is arranged on the connecting bracket away from the connecting frame. It is connected to the fixed shaft through an external lifting device to provide an upward lifting force, and is locked with the battery box through the locking part at the top, and works together with the support roller at the bottom end of the lifting frame to achieve stable hoisting of the battery box; the length of the support point is adjustable to achieve adjustment of the pitch angle of the battery box after hoisting to avoid overflow of the solution inside the battery box.

2. The battery pack handling sling according to claim 1, characterized in that: The locking portion (30) comprises a fixed base plate (31) connected to the fixed portion (10); a rotary lock (32) rotatably arranged through the fixed base plate (31); and a driving cylinder (33) arranged on the fixed base plate (31) and drivingly connected to the rotary lock (32).

3. The battery pack handling sling according to claim 2, characterized in that: The locking portion (30) further includes a connecting rod (34) disposed between the fixing units for realizing drive linkage, wherein one end of the connecting rod (34) is movably connected to the driving cylinder (33), and the other end thereof is drivenly connected to a rotary lock (32) on another fixing unit.

4. The battery pack handling sling according to claim 2 or 3, characterized in that: The locking portion (30) further includes a rotating mechanism (35) arranged between the driving cylinder (33) and the rotary lock (32).

5. The battery pack handling sling according to claim 4, characterized in that: The rotating mechanism (35) comprises a chuck (351) connected to the rotary lock (32) as a whole and moving together with the chuck (351), a transmission shaft sleeve (352), and a driving plate (353), wherein one end of the driving plate (353) is connected to the movable end of the driving cylinder (33), and the other end thereof is connected to the chuck (351) through the transmission shaft sleeve (352).

6. The battery pack handling sling according to claim 2 or 3, characterized in that: The locking portion (30) further includes a locking mechanism (36) which is arranged on the fixed base plate (31) and is releasably locked with the rotating mechanism (35).

7. The battery pack handling sling according to claim 6, characterized in that: The locking mechanism (36) includes a push pin (361), a convex ring (362), an elastic member (363), and a screw (364); the convex ring (362) is fixed to one end of the push pin (361) and is located above the fixed base plate (31); the other end of the convex ring (362) is arranged opposite to the fixed base plate (31) and extends downward, and is movably arranged with the fixed base plate (31); the elastic member (363) is sleeved on the top end of the push pin (361) and is movably clamped to the top surface of the fixed base plate (31) through the screw (364) and the push pin (361); the convex ring (362) is detachably clamped with the chuck (351) of the rotating mechanism (35).

8. The battery pack handling sling according to claim 6, characterized in that: The locking portion (30) further comprises a sensor (37) arranged on the fixed base plate (31), and the sensor (37) comprises a position sensor (371) arranged on the top end of the locking mechanism (36).

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