A battery box assembly

Abstract

This utility model discloses a battery box assembly, which includes a battery box body, multiple first lifting holes, and multiple lifting tools. The battery box body includes a base plate and multiple side plates disposed on the edge of the base plate; the multiple side plates and the base plate cooperate to form a mounting cavity for installing batteries; multiple first lifting holes are respectively disposed on the outer surface of two opposite side plates; multiple lifting tools correspond one-to-one with multiple first lifting holes and are detachably installed in multiple first lifting holes; wherein, when a lifting tool is installed in a first lifting hole, the lifting tool protrudes upward from the battery box body at least partially. In this technical solution, the battery box body has pre-set first lifting holes on two pairs of outer side walls, and is equipped with detachable lifting tools, so that the lifting tools protrude upward after being installed; in this way, the lifting rope can directly hook the protruding part during lifting, without the need to clamp the battery box body or find a temporary force point, thus shortening the lifting preparation time; the lifting tools are detachable and can be removed during transportation, the battery box body has a flat outline, and can be stacked in multiple layers, saving transportation space.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery box assembly. Background Technology

[0002] As the energy density and power requirements of existing power battery packs increase, the frame requirements for the bottom battery tray are also increasing, thus requiring higher standards for the frame.

[0003] The existing battery tray frame is welded: it is made by extruding profiles, processing the profiles, making tooling, and then assembling them using friction welding / arc welding / adhesive + FDS. This modular assembly is complex, costly, and difficult to assemble. The structural design omits hoisting, making production and transportation inconvenient. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a battery box assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery box assembly, the battery box assembly comprising: The battery housing includes a base plate and multiple side plates disposed on the edge of the base plate; the multiple side plates and the base plate cooperate to form a mounting cavity for installing batteries; Multiple first lifting holes are respectively provided on the outer surface of two oppositely arranged side plates among the multiple side plates; Multiple lifting devices are provided, each corresponding to one of the multiple first lifting holes, and each can be detachably installed in one of the multiple first lifting holes; When the lifting device is installed in the first lifting hole, the lifting device protrudes upward from the battery box body at least partially.

[0006] The technical advantages of this embodiment are as follows: the battery box has pre-set first lifting holes on the outer walls of both sides, and is equipped with detachable lifting tools so that the lifting tools protrude upwards after being installed; in this way, the lifting rope can be directly hooked onto the protruding part when lifting, without the need to clamp the battery box or find a temporary force point, thus shortening the preparation time for lifting; the lifting tools are detachable and can be removed during transportation, the battery box has a flat outline, and can be stacked in multiple layers, saving transportation space.

[0007] Optionally, the multiple side plates include two parallel first side plates and two parallel second side plates; one of the first side plates has its two ends connected to one end of each of the two second side plates, and the other of the first side plates has its two ends connected to the other end of each of the two second side plates; the multiple first lifting holes are respectively provided on the two first side plates.

[0008] The technical advantages of this implementation are as follows: the lifting holes are concentrated on two parallel first side plates. This way, when lifting from four points, the lifting ropes naturally form a rectangle, the lifting force is aligned with the center of gravity of the battery box, and the battery box will not deflect or sway; during transportation, forklifts can also be inserted from the direction of these two side plates, and the loading and unloading method is consistent with the lifting direction, without the need for additional posture adjustments, reducing handling steps.

[0009] Optionally, the first side panel includes an inner panel and an outer panel spaced apart from each other; the first hanging hole is located on the outer panel and penetrates through the outer panel.

[0010] The technical advantages of this embodiment are as follows: the side panel is made into a double layer, with the first lifting hole only opened on the outermost panel. In this way, the lifting force is only applied to the outer panel, while the inner panel still completely encloses the battery. During lifting, the external force does not directly compress the internal cells, reducing the probability of internal short circuits caused by deformation during transportation. At the same time, the rigidity of the double-layered panel is increased, making the battery box more resistant to compression during stacked transportation.

[0011] Optionally, the outer panel has a first lower wall, which is horizontally arranged and forms the top of the first lifting hole.

[0012] The technical advantages of this embodiment are as follows: a horizontal wall is left at the bottom of the outer panel, which serves as the top wall of the first lifting hole. In this way, the horizontal wall becomes a natural bearing surface. When the hook is pulled upward, the force is directly applied to the entire horizontal wall, thus dispersing the stress and preventing local tearing of the outer panel. The structure can still maintain its integrity after multiple lifting operations during transportation, extending the cycle life of the battery box.

[0013] Optionally, the first lifting hole is a rectangular hole.

[0014] The technical advantages of this embodiment are as follows: the first lifting hole is made into a rectangle. This results in a large contact area between the rectangular hole and the side of the rectangular hook, making it less likely for the hook to rotate during lifting, thus ensuring the battery box remains stable in the air and reducing the risk of swaying and collision. Even if there are bumps during transportation, there is no rotational gap between the hook and the hole wall, improving lifting safety.

[0015] Optionally, the lifting device includes a lifting body and a second lifting hole disposed in the lifting body, the lifting body being detachably installed in the first lifting hole; the second lifting hole is a through hole and the axial direction of the second lifting hole is parallel to the axial direction of the first lifting hole.

[0016] The technical advantages of this embodiment are as follows: The lifting body is equipped with a second lifting hole with its axis parallel to the first lifting hole. This ensures that the lifting rope, after passing through the second lifting hole, follows the same direction as the first lifting hole, allowing for linear transmission of lifting force without torsional torque. The battery box sidewalls are subjected only to pure tensile force, preventing side plate deformation. Before transportation, the lifting equipment is removed, and the battery box surface has no protruding holes or shafts, allowing adjacent battery boxes to fit tightly together when stacked, improving vehicle space utilization.

[0017] Optionally, the hoisting body is provided with a hook; the hook extends at least partially into the hoisting hole and abuts against the top of the hoisting hole.

[0018] The technical advantages of this embodiment are as follows: The lifting device has a hook that extends into the first lifting hole and abuts against its top. This creates a self-locking mechanism between the hook and the top of the hole, tightening as it is pulled upwards without the need for additional locking mechanisms, allowing for one-step installation. When removing the hook, simply lowering the battery box will automatically release it, reducing disassembly and assembly time and improving transportation and turnover efficiency.

[0019] Optionally, the hoisting body includes a first vertical plate, a second vertical plate, and a horizontal plate; the horizontal plate is connected to the bottom of the first vertical plate and the bottom of the second vertical plate; the second lifting hole is provided in the first vertical plate; the height of the second vertical plate is less than the height of the first vertical plate; when the hoisting device is installed on the battery box, the horizontal plate abuts against the top of the first lifting hole.

[0020] The technical advantages of this embodiment are as follows: The hoisting body consists of two vertical plates of unequal height plus a bottom horizontal plate, with the horizontal plate abutting against the top wall of the first hoisting hole. In this way, the horizontal plate becomes a load-bearing beam, converting linear tension into surface pressure, reducing the local pressure on the side plates, and preventing fatigue cracking at the hole edge caused by long-term hoisting; if temporary stacking with lifting equipment is required during transportation, the horizontal plate can also serve as a support, raising the bottom of the battery box off the ground and preventing water damage.

[0021] Optionally, the second vertical plate has a guide surface facing the first vertical plate, and the guide surface gradually tilts towards the first vertical plate in a top-to-bottom direction.

[0022] The technical advantages of this embodiment are as follows: the lower second vertical plate has an inclined guide surface on its inner side. When installing the lifting device, the guide surface first contacts the edge of the opening, and the inclined surface automatically guides the hook into the correct position, eliminating the need for visual alignment and allowing a single person to complete the task. Even in situations with insufficient lighting or limited space at the transportation site, lifting preparations can still be completed quickly, reducing downtime.

[0023] Optionally, the second lifting hole is a round hole.

[0024] The technical advantages of this implementation method are: the round hole matches the standard round lifting ring or shackle, so there is no need to make special lifting slings on site, and general lifting equipment can be used directly for operation; if different diameter lifting ropes need to be changed during transportation, only the corresponding shackles need to be replaced, and the battery box itself does not need to be modified, thus improving versatility and transportation flexibility. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a battery box assembly according to the present invention; Figure 2 This is a schematic diagram of the cooperation between a lifting device and a first side plate according to the present invention; Figure 3 This is a schematic diagram of a battery box according to the present invention; Figure 4 This is a schematic diagram of a lifting device according to the present invention. Figure 1 ; Figure 5 This is a schematic diagram of a lifting device according to the present invention. Figure 2 .

[0026] The attached figures are labeled as follows: 1. Battery housing; 2. First lifting hole; 3. Lifting device; 11. Base plate; 12. First side plate; 13. Second side plate; 121. Outer plate; 122. Inner plate; 123. First lower wall; 31. Lifting body; 32. Second lifting hole; 311. First vertical plate; 312. Second vertical plate; 313. Horizontal plate; 314. Guide surface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 and Figure 2 A battery box assembly is shown, comprising, as Figure 3 The battery housing 1, multiple first lifting holes 2, and multiple [other features] are shown. Figure 4 and Figure 5 The lifting device 3 is shown.

[0029] The battery housing 1 includes a base plate 11 and multiple side plates disposed on the edge of the base plate 11; the multiple side plates and the base plate 11 cooperate to form a mounting cavity for installing batteries; multiple first lifting holes 2 are respectively disposed on the outer surface of two oppositely disposed side plates; multiple lifting devices 3 correspond one-to-one with the multiple first lifting holes 2 and are detachably installed in the multiple first lifting holes 2; wherein, when the lifting device 3 is installed in the first lifting hole 2, the lifting device 3 at least partially protrudes upward from the battery housing 1.

[0030] Battery boxes are frequently moved between different locations such as workshops, warehouses, and vehicle decks. Traditionally, this requires temporarily wrapping slings or clamps around the battery box 1 and then finding the center of gravity, a process that takes even skilled workers several minutes. This solution fixes the lifting holes on both sides of the battery box 1, allowing the spreader 3 to be inserted in one go for installation, achieving positioning within seconds. The protruding part of the spreader 3 directly forms a "lifting lug," allowing the hook to be engaged without needing to be close to the surface of the battery box 1, eliminating the need for repeated adjustments to the sling angle and tension. The preparation time for a single lifting operation is reduced from minutes to tens of seconds. In bulk container loading or transshipment at sea, this shortens the overall ship operation cycle and directly reduces transportation scheduling costs. The detachable structure means that the spreader 3 only exists during its short lifespan when it is "needed to be lifted." During transportation (especially long-distance land transport or container shipping), the spreader 3 can be removed, restoring the exterior of the battery box 1 to a flat hexahedron. Adjacent battery boxes 1 can be stacked face-to-face, eliminating the "contour interference" caused by traditional fixed lifting lugs. One or two more layers can be stacked within the same height, increasing the container's volume utilization rate by approximately 12% to 15%. For heavy-duty battery boxes, this is equivalent to transporting more than ten more units per vehicle or standard container, thus reducing the transportation cost per unit. The lifting holes are located on the outer surfaces of the two opposing side plates, and the protruding part of the spreader 3 faces upwards. This means that the lifting force acts directly within the plane of the side plates, with the force line transmitted along the thickness direction of the side plates. The side plates become tension flanges, and the bottom plate 11 is almost unaffected by bending moment. Compared to the traditional "bottom-support sling" method, the bottom plate 11 will not experience upward bulging deformation due to compression. With the bottom plate 11 remaining flat, the battery box 1 can be stably positioned on a horizontal support surface on the transport vehicle, avoiding additional dynamic loads caused by uneven bottom surfaces during bumps, thereby protecting the internal battery module weld points from fatigue loosening. The first lifting hole 2 and the lifting device 3 use a detachable metal-to-metal contact. The protruding part of the lifting device 3 faces upward, and the lifting rope does not directly rub against the sharp edge of the battery box 1. In contrast, traditional lifting straps are repeatedly bent and cut at the sharp edge, and need to be scrapped after three or five times, and may even cut notches on the edge of the battery box 1. This solution concentrates wear on the replaceable lifting device 3, and the battery box 1 itself is almost undamaged and can still be used after hundreds of lifting operations. For rental operators, the lifespan of the battery box 1 is doubled, and the per-unit cyclic transportation cost is reduced accordingly. In summary, the battery box 1 has a first lifting hole 2 on both sides of its outer wall, and is equipped with a detachable lifting device 3, which protrudes upward after installation. In this way, the lifting rope can directly hook the protruding part during lifting, without the need to clamp the battery box 1 or find a temporary force point, thus shortening the lifting preparation time. The lifting device 3 is detachable and can be removed during transportation. The battery box 1 has a flat outline and can be stacked in multiple layers, saving transportation space.

[0031] As an optional implementation, the multiple side plates include two parallel first side plates 12 and two parallel second side plates 13; one of the first side plates 12 has its two ends connected to one end of each of the two second side plates 13, and the other of the first side plates 12 has its two ends connected to the other ends of each of the two second side plates 13; multiple first lifting holes 2 are respectively provided on the two first side plates 12. The first lifting holes 2 are concentrated on the two parallel first side plates 12. In this way, when lifting from four points, the lifting ropes naturally form a rectangle, the lifting force is aligned with the center of gravity of the battery box 1, and the battery box 1 will not deflect or sway; during transportation, forklifts can also be inserted from the direction of these two side plates, and the loading and unloading method is consistent with the lifting direction, without the need for additional posture adjustments, reducing handling steps.

[0032] As an optional implementation, the first side panel 12 includes an inner panel 122 and an outer panel 121 spaced apart from each other; the first lifting hole 2 is located in the outer panel 121 and penetrates through it. The side panel is made into a double layer, with the first lifting hole 2 only opening in the outer panel 121. In this way, the lifting force is only applied to the outer panel 121, while the inner panel 122 still completely encloses the battery. During lifting, the external force does not directly compress the internal cells, reducing the probability of internal short circuits caused by deformation during transportation; at the same time, the rigidity of the double-layered panels is increased, making the battery box 1 more resistant to compression during stacked transportation.

[0033] As an optional implementation, the outer panel 121 has a first lower wall 123, which is horizontally positioned and forms the top of the first lifting hole 2. A horizontal wall is left at the bottom of the outer panel 121, serving as the top wall of the first lifting hole 2. This horizontal wall becomes a natural bearing surface; when the hook pulls upwards, the force acts directly on the entire horizontal wall, dispersing stress and preventing localized tearing of the outer panel 121. This also ensures structural integrity after multiple transport and lifting operations, extending the cycle life of the battery box 1.

[0034] As an optional implementation, the first lifting hole 2 is a rectangular hole. The rectangular hole 2 has a large contact area with the side of the rectangular hook, making it less prone to rotation during lifting. This ensures the battery box 1 remains stable in the air, reducing the risk of swaying and collisions. Even during transport, there is no rotational gap between the hook and the hole wall, improving lifting safety.

[0035] As an optional implementation, the lifting device 3 includes a lifting body 31 and a second lifting hole 32 disposed on the lifting body 31. The lifting body 31 is detachably installed in the first lifting hole 2. The second lifting hole 32 is a through hole, and the axial direction of the second lifting hole 32 is parallel to the axial direction of the first lifting hole 2. The lifting body 31 has a second lifting hole 32 and its axis is parallel to the first lifting hole 2. In this way, after the lifting rope passes through the second lifting hole 32, its direction is consistent with the first lifting hole 2, the lifting force is transmitted in a straight line, there is no torsional torque, the side wall of the battery box 1 is only subjected to pure tensile force, and the side plate is not easily deformed. Before transportation, the lifting device 3 is removed. There are no protruding holes or shafts on the surface of the battery box 1. When stacked, adjacent battery boxes 1 can fit tightly together, improving the space utilization of the vehicle.

[0036] As an optional implementation, the lifting body 31 is equipped with a hook; the hook extends at least partially into the lifting hole and abuts against the top of the lifting hole. The lifting device 3 has a hook body that extends into the first lifting hole 2 and abuts against its top. In this way, the hook body and the top of the hole form a self-locking mechanism, which tightens as it is pulled upwards, without the need for additional locks, and the installation is completed in one step; when removing the hook, simply lowering the battery box 1 will automatically release it, reducing disassembly and assembly time and improving transportation and turnover efficiency.

[0037] As an optional implementation, the hoisting body 31 includes a first vertical plate 311, a second vertical plate 312, and a horizontal plate 313. The horizontal plate 313 is connected to the bottom of the first vertical plate 311 and the bottom of the second vertical plate 312. A second lifting hole 32 is provided in the first vertical plate 311. The height of the second vertical plate 312 is less than the height of the first vertical plate 311. When the lifting device 3 is installed on the battery box 1, the horizontal plate 313 abuts against the top of the first lifting hole 2. The hoisting body 31 is composed of two vertical plates of unequal height plus a bottom horizontal plate 313, with the horizontal plate 313 abutting against the top wall of the first lifting hole 2. In this way, the horizontal plate 313 becomes a load-bearing beam, converting linear tension into surface pressure, reducing local pressure on the side plate, and preventing fatigue cracking at the hole edge caused by long-term hoisting. If it is temporarily necessary to stack the battery box 1 with the lifting device 3 during transportation, the horizontal plate 313 can also serve as a support, raising the bottom of the battery box 1 off the ground and preventing water erosion.

[0038] As an optional implementation, the second vertical plate 312 has a guide surface 314 facing the first vertical plate 311, and the guide surface 314 gradually slopes towards the first vertical plate 311 from top to bottom. The lower second vertical plate 312 has an inclined guide surface 314 on its inner side. In this way, when installing the lifting device 3, the guide surface 314 first contacts the edge of the opening, and the inclined surface automatically guides the hook into the correct position, eliminating the need for visual alignment and allowing a single person to complete the task. Even in situations with insufficient lighting or limited space at the transportation site, lifting preparation can still be completed quickly, reducing downtime.

[0039] As an optional implementation, the second lifting hole 32 is a round hole. The round hole matches a standard round lifting ring or shackle, eliminating the need for special slings on site; general lifting equipment can be used directly. If different diameter slings need to be changed during transportation, only the corresponding shackles need to be replaced, and the battery box 1 itself does not need to be modified, thus improving versatility and transportation flexibility.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery pack assembly, characterized by: The battery box assembly includes: The battery housing (1) includes a base plate (11) and multiple side plates disposed on the edge of the base plate (11); the multiple side plates and the base plate (11) cooperate to form a mounting cavity for installing batteries; Multiple first lifting holes (2) are respectively provided on the outer surface of two oppositely arranged side plates among the multiple side plates; Multiple lifting devices (3) correspond one-to-one with the multiple first lifting holes (2) and can be detachably installed in the multiple first lifting holes (2); When the lifting device (3) is installed in the first lifting hole (2), the lifting device (3) protrudes upward from the battery box (1) at least partially.

2. The battery pack assembly of claim 1, wherein: The multiple side plates include two parallel first side plates (12) and two parallel second side plates (13); one of the first side plates (12) is connected to one end of the two second side plates (13) at both ends, and the other of the first side plates (12) is connected to the other end of the two second side plates (13) at both ends; the multiple first lifting holes (2) are respectively provided on the two first side plates (12).

3. A battery pack assembly according to claim 2, wherein: The first side panel (12) includes an inner panel (122) and an outer panel (121) spaced apart from each other; the first hanging hole (2) is located in the outer panel (121) and passes through the outer panel (121).

4. The battery pack assembly of claim 3, wherein: The outer panel (121) has a first lower wall (123), which is horizontally arranged and forms the top of the first hanging hole (2).

5. The battery pack assembly of claim 1, wherein: The first lifting hole (2) is a rectangular hole.

6. The battery pack assembly of claim 1, wherein: The lifting device (3) includes a lifting body (31) and a second lifting hole (32) provided in the lifting body (31). The lifting body (31) can be detachably installed in the first lifting hole (2). The second lifting hole (32) is a through hole and the axial direction of the second lifting hole (32) is parallel to the axial direction of the first lifting hole (2).

7. A battery pack assembly according to claim 6, wherein: The hoisting body (31) is provided with a hook; the hook extends at least partially into the hoisting hole and abuts against the top of the hoisting hole.

8. The battery pack assembly of claim 6, wherein: The hoisting body (31) includes a first vertical plate (311), a second vertical plate (312), and a horizontal plate (313); the horizontal plate (313) is connected to the bottom of the first vertical plate (311) and the bottom of the second vertical plate (312); the second lifting hole (32) is provided in the first vertical plate (311); the height of the second vertical plate (312) is less than the height of the first vertical plate (311); when the hoisting device (3) is installed on the battery box (1), the horizontal plate (313) abuts against the top of the first lifting hole (2).

9. A battery pack assembly according to claim 8, wherein: The second vertical plate (312) has a guide surface (314) facing the first vertical plate (311), and the guide surface (314) gradually tilts toward the first vertical plate (311) in a top-to-bottom direction.

10. A battery box assembly according to claim 6, characterized in that: The second lifting hole (32) is a round hole.

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