Hoisting structure and hoisting system

Abstract

The utility model discloses a hoisting structure and a hoisting system.The hoisting structure is used for being matched with an end plate of a module to hook the end plate, a hoisting opening is formed in the end plate in the thickness direction of the end plate, an avoiding opening communicated with the hoisting opening is formed in the end plate in the width direction of the end plate, the hoisting structure comprises a hoisting ring and a hoisting hook, and the hoisting ring is rotationally connected with the hoisting hook; the lifting hook is used for hooking the lifting opening when the module is lifted and taking out the module from the avoiding opening after the module is lifted. The hoisting structure adopts a combined structure of the hoisting ring and the hoisting hook, so that the hoisting hook can rotate relative to the hoisting ring and is taken out from the avoiding opening in the width direction of the end plate, thereby canceling the space reserved by the module for dismounting the hoisting structure in the thickness direction of the end plate, improving the utilization rate of the internal space of the battery pack, and improving the energy density of the battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting structures, and in particular to a hoisting structure and a hoisting system. Background Art

[0002] In a battery pack composed of modules, the gaps between modules are small to improve space utilization. Assembling the modules into the battery pack requires lifting equipment.

[0003] During disassembly, the lifting fixture must first be moved downward and outward to unhook the end plate, and then removed. Therefore, the remaining disassembly space between modules must be at least larger than the fixture dimensions. In practice, the lifting fixture weighing requires the selection of metal materials of a certain diameter. The diameter and the processing of the hooks determine the fixture dimensions, resulting in a relatively large gap between the module design and preventing further space utilization within the battery pack. Summary of the Invention

[0004] One purpose of the present invention is to provide a lifting structure and module, which aims to solve the technical problem that the weighing of the lifting tooling requires the selection of metal materials of a certain diameter, and the processing technology of the diameter and the hook determines the size of the tooling, resulting in a relatively large space in the module design spacing and the inability to further improve the space utilization rate in the battery pack.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a solution: a lifting structure, which is used to cooperate with the end plate of the module to hook the end plate, the end plate is provided with a lifting hole in its thickness direction, and the end plate is provided with an avoidance hole connected to the lifting hole in its width direction. The lifting structure includes: a lifting ring and a lifting hook, the lifting ring and the lifting hook are rotatably connected, and the lifting hook is used to hook the lifting hole when lifting the module, and is taken out from the avoidance hole after the module is lifted.

[0006] Optionally, the hook includes a rod and a hook connected to each other, the hook is used to hook the end plate, the peripheral side wall of the rod is provided with a limiting groove, the lifting ring is provided with an assembly hole, the rod is passed through the assembly hole, and the hole wall of the assembly hole is accommodated in the limiting groove.

[0007] Optionally, the hole wall of the assembly hole and the bottom wall of the limiting groove are spaced apart.

[0008] Optionally, the rod is cylindrical and the assembly hole is a circular hole.

[0009] Optionally, the lifting ring includes a base and a ring that are connected to each other, the base is provided with an assembly hole, the ring is formed with a lifting hole, the rod passes through the base, and in the length direction of the rod, the length of the base is less than the length of the limiting groove.

[0010] Optionally, the lifting ring includes a reinforcement portion, which is arranged in the lifting hole and connected to the ring portion.

[0011] Optionally, the hook includes a rod portion and a hook portion connected to each other, the hook portion is used to hook the end plate, and the rod portion and the lifting ring are threadedly connected.

[0012] Optionally, the hook includes a rod portion and a hook portion connected to each other, the hook portion is used to hook the end plate, and in the length direction of the rod portion, the length of the hook portion is smaller than the length of the avoidance opening.

[0013] Optionally, in the height direction of the end plate, the length of the hanging opening is L1, the length of the avoidance opening is L2, and 0.8≤L2 / L1≤1.

[0014] Optionally, the end plate is further provided with a fixing hole for allowing a screw to pass through, and the fixing hole passes through the hanging opening.

[0015] To achieve the above object, the present invention provides a solution: a lifting system, which comprises: a crane and any of the above lifting structures, the lifting structure being connected to the output end of the crane, and the lifting structure being used to hook the end plate of the module.

[0016] Optionally, the lifting system further includes a bracket, a plurality of hooks are provided on the bracket, a plurality of lifting structures are provided on each end plate, and the plurality of hooks on the bracket are respectively connected to the plurality of lifting structures.

[0017] The beneficial effects of the present invention are:

[0018] The lifting structure includes: a lifting ring and a lifting hook, the lifting ring and the lifting hook are rotatably connected, and the lifting hook can be rotated at any angle relative to the lifting ring. When lifting the module, the lifting hook is used to hook the lifting port when lifting the module. After the module is lifted, the lifting hook is rotated relative to the lifting ring at a preset angle and taken out from the avoidance port along the width direction of the end plate, rather than taken out from the lifting port along the thickness direction of the end plate. The advantage of doing this is that after the module is assembled to the box of the battery pack, the module can be as close to the box as possible in the thickness direction of the end plate to reduce the space between the module and the box in the thickness direction of the end plate, so as to assemble more batteries, thereby improving the space utilization of the box and increasing the energy density of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 Schematic diagram of the structure of the module and the hoisting structure provided by an embodiment of the present invention;

[0021] Figure 2This is a schematic structural diagram of an end plate provided by one embodiment of the present invention;

[0022] Figure 3 is a structural schematic diagram of a hoisting structure provided by an embodiment of the present invention;

[0023] Figure 4 is a cross-sectional schematic diagram of a hoisting structure provided by an embodiment of the present invention;

[0024] Figure 5 is a structural schematic diagram of a hoisting structure provided by an embodiment of the present invention;

[0025] Figure 6 is a structural schematic diagram of an end plate provided by another embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the bracket provided by the embodiment of the present invention.

[0027] Description of the accompanying figures: module 20, end plate 21, hanging hole 211, avoidance hole 213, fixing hole 215;

[0028] Screw 23, lifting structure 10, lifting ring 12, mounting hole 124, assembly hole 122, base 121;

[0029] Ring portion 123, reinforcement portion 125, hook 14, rod portion 141, limiting groove 142, hook portion 143;

[0030] Bracket 30 and hook 32. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] See also Figures 1 to 3 As shown, Figure 1 is a structural diagram of the module 20 and the hoisting structure 10 provided in an embodiment of the present invention, Figure 2 is a structural diagram of an end plate 21 provided in one embodiment of the present invention. Figure 3 It is a structural diagram of the hoisting structure 10 provided in an embodiment of the present invention.

[0034] An embodiment of the present invention provides a lifting system comprising a crane and a lifting structure 10. The lifting structure 10 is connected to the output end of the crane and is used to hook the end plate 21 of the module 20. When the module 20 needs to be lifted, the lifting structure 10 hooks the end plate 21, and the crane drives the lifting structure 10 upward to move the module 20. After the module 20 moves to the target position in the battery pack, the lifting structure 10 is removed and a new module 20 is reinstalled.

[0035] Specifically, the lifting structure 10 is used to cooperate with the end plate 21 of the module 20 to hook the end plate 21. The end plate 21 is provided with a lifting opening 211 in its thickness direction, and the lifting opening 211 is open toward the thickness direction of the end plate 21. The end plate 21 is provided with an avoidance opening 213 in its width direction that is connected to the lifting opening 211, and the avoidance opening 213 is open toward the width direction of the end plate 21. The shape formed by the lifting opening 211 and the avoidance opening 213 is similar to an L-shape.

[0036] The lifting structure 10 includes: a lifting ring 12 and a hook 14, which are rotatably connected. The hook 14 can be rotated at any angle relative to the lifting ring 12. The hook 14 is used to hook the lifting port 211 when lifting the module 20, and after the module 20 is lifted, it is rotated at a preset angle relative to the lifting ring 12 to be taken out from the avoidance port 213.

[0037] In order to enable those skilled in the art to have a further understanding of this solution, the hoisting process of the module 20 will be explained in detail below, but it is worth noting that this does not impose any limitation on the technical solution of the present invention.

[0038] 1. The hook 14 hooks the lifting hole 211 on the end plate 21; 2. The output end of the crane is connected to the lifting ring 12 and started to lift the module 20 to the target position of the battery pack; 3. The hook 14 moves downward to the avoidance hole 213. At this time, the hook 14 does not hook the end plate 21; 4. The hook 14 rotates a preset angle relative to the lifting ring 12 and is pulled out of the avoidance hole 213 along the width direction of the end plate 21, and the hook 14 and the end plate 21 are separated.

[0039] In this embodiment, the lifting structure 10 includes: a lifting ring 12 and a lifting hook 14, the lifting ring 12 and the lifting hook 14 are rotatably connected, and the lifting hook 14 can be rotated at any angle relative to the lifting ring 12. When the module 20 is lifted, the lifting hook 14 is used to hook the lifting port 211 when lifting the module 20. After the module 20 is lifted, the lifting hook 14 rotates relative to the lifting ring 12 at a preset angle and is taken out from the avoidance port 213 along the width direction of the end plate 21, rather than being taken out from the lifting port 211 along the thickness direction of the end plate 21. The advantage of doing this is that after the module 20 is assembled in the box of the battery pack, the module 20 can be as close to the box as possible in the thickness direction of the end plate 21, so as to reduce the space between the module 20 and the box in the thickness direction of the end plate 21, so as to assemble more batteries, thereby improving the space utilization of the box and improving the energy density of the battery pack.

[0040] The number of the hoisting structures 10 can be one or more. Figure 1 The module 20 shown can be lifted by four lifting structures 10. The multiple lifting structures 10 can be arranged at the lifting points on the end plate 21 according to the weight distribution of the module 20, or can be symmetrically arranged on the end plate 21.

[0041] See also Figures 1 to 4 As shown, Figure 4 2 is a schematic cross-sectional view of a hoisting structure 10 provided in an embodiment of the present invention.

[0042] The hook 14 includes a rod 141 and a hook 143 that are connected to each other. The hook 143 is in the shape of a curved hook and is used to hook the end plate 21. The circumferential side wall of the rod 141 is provided with a limiting groove 142. The limiting groove 142 is arranged around the circumferential side wall of the rod 141 and forms a pit relative to the circumferential side wall of the rod 141. The limiting groove 142 can be located at the end of the rod 141 away from the hook 143, or it can be located in the middle of the rod 141 or at other locations. The eye 12 is provided with an assembly hole 122. The rod 141 passes through the assembly hole 122. The end of the rod 141 is accommodated in the eye 12. The wall of the assembly hole 122 is accommodated in the limiting groove 142. The wall of the assembly hole 122 can rotate relative to the limiting groove 142 in the limiting groove 142, thereby realizing the rotation of the rod 141 relative to the assembly hole 122.

[0043] In this embodiment, a retaining groove 142 is formed on the sidewall of the rod 141, and an assembly hole 122 is formed in the eye 12. The rod 141 passes through the assembly hole 122, and the wall of the assembly hole 122 is accommodated in the retaining groove 142. As a result, a portion of the eye 12 is retained in the retaining groove 142, forming a stable rotational relationship between the eye 12 and the rod 141. Compared to other methods that require auxiliary components to connect the two parts in a rotational relationship, this method requires fewer parts and simplifies the assembly process.

[0044] Optionally, the wall of the assembly hole 122 and the bottom wall of the limiting groove 142 are spaced apart. The distance between the wall of the assembly hole 122 and the bottom wall of the limiting groove 142 is not limited herein, and is determined so that the ring 12 and the rod 141 do not contact each other when the ring 12 rotates relative to the rod 141. This arrangement has the advantage of eliminating friction between the ring 12 and the hook 14 during rotation, thereby reducing frictional losses between the ring 12 and the hook 14.

[0045] If, during the rotation of the lifting ring 12 and the lifting hook 14, the hole wall of the assembly hole 122 and the bottom wall of the limiting groove 142 rub against each other, this will cause the lifting ring 12 and the lifting hook 14 to wear, so that the assembly hole 122 becomes larger and larger. When the assembly hole 122 exceeds the diameter of the rod 141, the lifting ring 12 will fall off the rod 141, causing the module 20 to fall and be damaged during the lifting process, and even injure people.

[0046] Of course, lubricating oil can also be applied between the hole wall of the assembly hole 122 and the bottom wall of the limiting groove 142 to fill the gap between them. The lubricating oil can improve the rotation efficiency between the lifting ring 12 and the lifting hook 14.

[0047] Alternatively, the rod 141 may be cylindrical, so that the retaining groove 142 surrounding the rod 141 can also form a circular groove. The assembly hole 122 may be a circular hole, so that the portion of the eye 12 located in the retaining groove 142 can also be circular. These two circular objects can maintain a stable spacing between them during rotation, thereby minimizing friction. Furthermore, this ensures that the rod 141 will not deviate radially during rotation relative to the eye 12, ensuring that the hook 143 can move along a predetermined trajectory.

[0048] Optionally, the lifting ring 12 includes a base 121 and a ring 123 connected to each other. The base 121 is provided with an assembly hole 122, and the ring 123 is formed with a lifting hole 124. The lifting hole 124 is used to cooperate with a crane. The rod 141 passes through the base 121. In the longitudinal direction of the rod 141, the length of the base 121 is less than the length of the limiting groove 142. The base 121 not only strengthens the lifting ring 12, but also allows it to rotate with the rod 141. When the length of the base 121 is less than the length of the limiting groove 142, the base 121 can swing up and down along the length of the rod 141, thus providing sufficient space for the lifting ring 12 to avoid damage to the lifting ring 12 when the module 20 is lifted by the crane and shaking. In serious cases, the lifting ring 12 and the rod 141 may be directly separated.

[0049] Optionally, the hook 14 includes a rod 141 and a hook 143 connected to each other. The hook 143 is used to hook the end plate 21. The length of the hook 143 is less than the length of the escape opening 213 along the length direction of the rod 141. The portion where the hook 143 connects to the rod 141 is the fixed end, and the portion where the hook 143 connects to the rod 141 is the free end. The length of the hook 143 is the distance between the top surface of the free end of the hook 143 and the bottom surface of the lowest point of the fixed end of the hook 143. The length of the escape opening 213 is the distance between the top and bottom surfaces of the escape opening 213 along the length direction of the rod 141. After the rod 141 descends a certain distance and rotates a preset angle, the hook 143 faces the escape opening 213. When the length of the hook 143 is less than the length of the escape opening 213, the hook 143 can be smoothly removed from the escape opening 213. The length of the hook portion 143 may be more than twice the length of the avoidance opening 213 , which can provide the hook portion 143 with a sufficiently large tolerance space, thereby preventing the hook portion 143 from being blocked by the end plate 21 and facilitating the removal of the hook portion 143 .

[0050] Optionally, in the height direction of the end plate 21, the length of the hanging hole 211 is L1, the length of the avoidance hole 213 is L2, and 0.8≤L2 / L1≤1. The length of the hanging hole 211 and the length of the avoidance hole 213 can be equal or approximately equal, such as Figure 6 As shown, the length of the lifting opening 211 is equal to the length of the escape hole 213. In this way, the escape hole 213 can be long enough to allow the hook 14 to hook the end plate 21 from the width direction of the end plate 21. After the lifting is completed, the hook 14 can be directly removed from the lifting structure 10 along the width direction of the end plate 21 without rotating relative to the lifting ring 12.

[0051] Optionally, the end plate 21 is further provided with a fixing hole 215 for the screw 23 to pass through, and the fixing hole 215 passes through the hanging port 211. The fixing hole 215 passes through the top wall of the hanging port 211. When the module 20 is hoisted, the hook portion 143 of the hook 14 can be inserted into the fixing hole 215 in the hanging port 211, changing the previous surface contact to a plug-in connection, so that the connection strength between the hook 14 and the end plate 21 is strengthened. After the module 20 is hoisted, the screw 23 passes through the fixing hole 215 and is connected to the box of the battery pack, thereby fixing the module 20 to the battery pack. In this embodiment, the stability of the connection between the hook 14 and the end plate 21 is increased by reusing the fixing hole 215 on the end plate 21.

[0052] See also Figure 5 As shown, Figure 5 It is a structural diagram of the hoisting structure 10 provided in an embodiment of the present invention.

[0053] The lifting ring 12 includes a reinforcement portion 125, which is arranged in the lifting hole 124 and connected to the ring portion 123. The reinforcement portion 125 spans the lifting hole 124 and connects the two opposite parts of the ring portion 123. It can be understood that when the number of reinforcement portions 125 is one, the lifting hole 124 is divided into two, and when the number of reinforcement portions 125 is two, the lifting hole 124 is divided into three. The remaining number of reinforcement portions 125 is not limited here. During the use of the ring portion 123, the crane will pull the ring portion 123 along the radial direction of the lifting hole 124, so the two opposite parts of the ring portion 123 tend to move closer to each other. When the bearing limit of the ring portion 123 is exceeded, the two opposite parts of the ring portion 123 will be close together or even break.

[0054] In this embodiment, the reinforcement portion 125 connects the two opposite parts of the ring portion 123 and provides a solid support at the center of the hollow ring portion 123, thereby improving the pulling resistance of the ring portion 123 and preventing the ring portion 123 from breaking.

[0055] The rotatable connection between the lifting ring 12 and the lifting hook 14 can also be realized by a threaded connection. Specifically, the lifting hook 14 includes a rod 141 and a hook 143 that are connected to each other. The hook 143 is used to hook the end plate 21, and the rod 141 and the lifting ring 12 are threadedly connected. An external thread is provided on the outer peripheral wall of the rod 141, and an internal thread is provided in the lifting ring 12. The rod 141 and the lifting ring 12 are rotatably connected by the external thread and the internal thread cooperating with each other. When the lifting structure 10 is assembled, the lifting ring 12 rotates a preset number of circles relative to the rod 141, and the lifting ring 12 moves to the middle or upper middle position of the rod 141. The threads on the internal thread and the external thread cooperate together, and the lifting ring 12 and the rod 141 remain relatively stable. When the module 20 is being hoisted or after the module 20 is hoisted, the rod 141 can rotate relative to the lifting ring 12.

[0056] See also Figure 1 and Figure 7 , Figure 7 3 is a schematic structural diagram of a bracket 30 provided in an embodiment of the present invention.

[0057] The lifting system also includes a bracket 30 equipped with multiple hooks 32. Each end plate 21 is equipped with multiple lifting structures 10, and the multiple hooks 30 on the bracket 30 are connected to the multiple lifting structures 10. The bracket 30 connects the lifting structures 10 on each end plate 21 together to form a whole. A crane directly connected to the bracket 30 can lift the end plate 21. This prevents the module from rotating during transportation, ensuring safe lifting.

[0058] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0059] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hoisting structure, characterized in that: The lifting structure is used to cooperate with the end plate of the module to hook the end plate. The end plate is provided with a lifting hole in the thickness direction, and the end plate is provided with an avoidance hole connected to the lifting hole in the width direction. The lifting structure includes: a lifting ring and a lifting hook. The lifting ring and the lifting hook are rotatably connected. The lifting hook is used to hook the lifting hole when lifting the module, and is taken out from the avoidance hole after lifting the module.

2. The hoisting structure according to claim 1, characterized in that: The hook includes a rod and a hook portion that are connected to each other, the hook portion is used to hook the end plate, the peripheral side wall of the rod portion is provided with a limiting groove, the lifting ring is provided with an assembly hole, the rod portion passes through the assembly hole, and the hole wall of the assembly hole is accommodated in the limiting groove.

3. The hoisting structure according to claim 2, characterized in that: The hole wall of the assembly hole and the bottom wall of the limiting groove are spaced apart.

4. The hoisting structure according to claim 2, characterized in that: The rod portion is cylindrical, and the assembly hole is a circular hole.

5. The hoisting structure according to claim 2, characterized in that: The lifting ring includes a base and a ring portion that are connected to each other, the base portion is provided with the assembly hole, the ring portion is formed with a lifting hole, the rod portion passes through the base portion, and in the length direction of the rod portion, the length of the base portion is smaller than the length of the limiting groove.

6. The hoisting structure according to claim 5, characterized in that: The lifting ring includes a reinforcement portion, which is arranged in the lifting hole and connected to the ring portion.

7. The hoisting structure according to claim 1, characterized in that: The hook comprises a rod portion and a hook portion connected to each other, the hook portion is used to hook the end plate, and the rod portion is threadedly connected to the lifting ring.

8. The hoisting structure according to claim 1, characterized in that: The hook includes a rod and a hook that are connected to each other. The hook is used to hook the end plate. In the longitudinal direction of the rod, the length of the hook is smaller than the length of the avoidance.

9. The hoisting structure according to any one of claims 1 to 8, characterized in that: In the height direction of the end plate, the length of the hanging opening is L1, the length of the avoidance opening is L2, and 0.8≤L2 / L1≤1.

10. The hoisting structure according to any one of claims 1 to 8, characterized in that: The end plate is further provided with a fixing hole, the fixing hole being used for a screw to pass through, and the fixing hole passes through the hanging port.

11. A hoisting system, characterized in that: The hoisting system comprises: a crane and a hoisting structure according to any one of claims 1 to 9, wherein the hoisting structure is connected to an output end of the crane and is used to hook the end plate of the module.

12. The hoisting system according to claim 11, characterized in that: The hoisting system further comprises a bracket, a plurality of hooks are provided on the bracket, a plurality of the hoisting structures are provided on each end plate, and the plurality of hooks on the bracket are respectively connected to the plurality of the hoisting structures.

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