Butt-joint assembly mechanism for large battery pack in cabin

Abstract

The invention relates to a docking assembly mechanism for a large battery pack in a cabin. The docking assembly mechanism comprises a module grouping assembly, a battery pack placing trolley, an auxiliary adjusting assembly and a cabin docking assembly, the module grouping assembly is used for forming a battery pack by a plurality of battery modules; the battery pack placing trolley comprises a main beam frame, and a roller guide rail group, a baffle plate assembly and a walking assembly which are arranged on the main beam frame; the roller guide rail group is used for bearing and transferring battery packs; the baffle assembly is used for limiting the battery pack on the roller guide rail group; the auxiliary adjusting assembly is arranged between the roller guide rail set and the main beam frame, and the roller guide rail set evenly supports the battery pack by adjusting the height of the auxiliary adjusting assembly. The in-cabin butt joint assembly is arranged in the energy cabin; the butt joint guide rail group is used for being in butt joint with the roller guide rail group and guiding the battery pack into the energy cabin; and the butt-joint bolt hole seat is used for being matched with a bolt arranged on the battery pack to limit the battery pack on the butt-joint guide rail group. The device is reliable in structure and convenient to operate, and rapid and safe assembly of the large battery pack is achieved.

Description

Technical Field

[0001] This invention relates to the field of underwater unmanned vehicle technology, and in particular to a docking and assembly mechanism for a large battery pack inside the cabin. Background Technology

[0002] Currently, underwater vehicles are developing towards intelligence, long endurance, and unmanned operation. To enhance the range of these vehicles, battery packs are becoming increasingly larger. Large battery packs are generally composed of smaller battery modules integrated and configured according to the actual needs of the underwater vehicle. Currently, the common technical means of assembling large battery packs relies on manual labor for assembly, fixing, and placement within the cabin. However, due to their large size and heavy weight, the assembly operation is labor-intensive, has low safety, and is difficult to operate. Summary of the Invention

[0003] In view of this, the present invention provides a docking and assembly mechanism for large battery packs inside the cabin, which is reliable in structure and easy to operate, and realizes the quick and safe assembly of large battery packs.

[0004] This invention is achieved through the following technical solution: A large battery pack docking and assembly mechanism for an internal compartment includes a modular assembly assembly, a battery pack placement trolley, an auxiliary adjustment assembly, and an internal docking assembly. The modular assembly assembly is used to assemble several battery modules into a single unit, forming a battery pack. The battery pack placement trolley includes a main beam frame, roller guide rail assemblies all mounted on the main beam frame, a baffle assembly, and a traveling assembly. The roller guide rail assemblies are used to carry and transport the battery pack. The baffle assembly is used to limit the battery pack on the roller guide rail assemblies. The auxiliary adjustment assembly is located between the roller guide rail assemblies and the main beam frame, adjusting its own height to ensure the roller guide rail assemblies evenly support the battery pack. The internal docking assembly is located inside the energy compartment and includes a docking guide rail assemblies and a docking pin hole seat. The docking guide rail assemblies are used to dock with the roller guide rail assemblies and guide the battery pack into the energy compartment. The docking pin hole seat engages with a pin provided on the battery pack, limiting the battery pack to the docking guide rail assemblies.

[0005] Furthermore, the module assembly includes a positioning pin, a fastener, two or more parallel support beams, and two parallel first and second limiting plates; one end of the two bottom support beams is vertically fixed to one side of the first limiting plate, and the other side of the first limiting plate is fixed with a positioning pin; all support beams pass through their corresponding battery modules, the other end of the two bottom support beams passes through the second limiting plate, and the two ends of the remaining support beams pass through the first and second limiting plates respectively and are then fixed by fasteners.

[0006] Furthermore, there are two positioning pins, which correspond to the positions of the two bottom support beams respectively.

[0007] Furthermore, the roller guide rail assembly includes a left guide rail, a right guide rail, and a lower guide rail, all arranged along the length of the support beam; each of the left and right guide rails has a guide wheel assembly on the side facing the battery pack, which abuts against the two sides of the battery pack respectively; each of the left and right guide rails has a roller assembly on its top, which abuts against the bottom surface of the protrusions on both sides of the battery pack respectively; the lower guide rail is located in a rectangular groove at the bottom of the battery pack, and the roller assembly on the top of the lower guide rail cooperates with the bottom of the rectangular groove; each of the two sides of the lower guide rail has a guide wheel assembly that cooperates with the two inner sides of the rectangular groove.

[0008] Furthermore, the docking guide rail group is provided with a left docking guide rail, a right docking guide rail and a lower docking guide rail corresponding to the roller guide rail group.

[0009] Furthermore, several auxiliary adjustment components are arranged along the length of the support beam between the lower guide rail and the main beam frame. Each auxiliary adjustment component includes an adjustment transition plate, an adjustment support block, an adjustment spring, a support ball, and an adjustment plug. The top of the adjustment plug extends into the bottom recess of the adjustment support block and is threadedly connected to the recess. The bottom of the adjustment plug extends out of the recess and is supported on the main beam frame. The adjustment transition plate is located on the top of the adjustment support block. The support ball is connected to the internal groove of the adjustment plug via an adjustment spring. The adjustment spring extends and contracts vertically and is always in a compressed state. The support ball extends out of the groove and abuts against the bottom of the recess. By rotating the adjustment plug and adjusting the length of the adjustment plug extending into the recess, the distance between the lower guide rail and the main beam frame is adjusted, causing the lower guide rail roller assembly to abut against the bottom of the rectangular groove to support the battery pack.

[0010] Furthermore, the bottom of the recess is provided with an arc-shaped groove that matches the curvature of the supporting sphere.

[0011] Furthermore, the baffle assembly includes a fixed baffle and a movable baffle; the fixed baffle is disposed at the front end of the main beam frame and has an installation position that cooperates with the battery pack pin; the movable baffle is disposed at the rear end of the main beam frame, and the distance between the movable baffle and the fixed baffle can be adjusted by rotating the screw threadedly connected to the movable baffle through a handwheel, thereby clamping the battery pack between the fixed baffle and the movable baffle.

[0012] Compared with existing technologies, the beneficial effects of this invention are: 1. The present invention enables precise docking of the roller guide rail assembly and the in-cabin docking guide rail assembly, reducing the frictional resistance of large battery packs and improving assembly convenience; with the help of pin limiters, the assembly positioning accuracy is improved, avoiding damage to the battery pack; the auxiliary adjustment components can offset errors and ensure that the roller guide rail assembly evenly supports the battery pack; the modular design facilitates maintenance and replacement, has strong versatility, and does not require complex power equipment, making it easy to operate, safe, and avoiding the safety hazards of manual assembly.

[0013] 2. The support beam of this invention runs through the battery module, so that the module is evenly stressed, avoiding local damage, and also facilitating the sequential arrangement of modules; together with the limiting plate and fasteners, it ensures that the battery modules are tightly assembled into a stable battery pack; the bottom support beam corresponds to the positioning pin, providing a precise benchmark for subsequent docking and ensuring compatibility.

[0014] 3. The left, right, and lower guide rails of this invention form a receiving space to support the battery pack from all directions, preventing it from tipping over or shifting during transport and docking; the guide wheel assembly provides precise guidance, and the roller assembly transforms sliding friction into rolling friction, significantly reducing pushing resistance, allowing it to be pushed manually; the double protection of the guide wheels and rollers ensures that the battery pack enters the compartment smoothly, avoiding jamming and collision.

[0015] 4. The adjusting screw plug of this invention is threadedly connected to the support block, which can precisely adjust the height of the lower guide rail, offset the machining and assembly errors, and ensure uniform support in three directions for the left, right, and lower guide rails; the compressed adjusting spring provides elastic support for the support ball, buffers vibration, and avoids impact on the battery pack; the support ball contacts the concave surface to reduce adjustment friction, and the arc groove improves support stability and prevents displacement.

[0016] 5. The present invention securely clamps the battery pack with the fixed and movable baffles to prevent movement during transportation and ensure hoisting safety; the fixed baffle mounting position cooperates with the battery pack pins to enhance positioning accuracy and provide a guarantee for subsequent docking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the modular component structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the shelving trolley structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the battery pack being placed on a shelf trolley.

[0020] Figure 4 This is a schematic diagram of the guide rail structure under the name of this invention.

[0021] Figure 5 for Figure 4 Top view.

[0022] Figure 6 for Figure 4 AA sectional view.

[0023] Figure 7 for Figure 4 BB cross-sectional view.

[0024] Figure 8 A schematic diagram of the adjustment component structure.

[0025] Figure 9 This is a schematic diagram of the docking components inside the cabin.

[0026] Figure 10 This is a partial view of the docking assembly inside the cabin (including the docking pin hole seat and guide rail bracket).

[0027] Among them, 1-module assembly; 2-battery pack placement trolley; 3-battery module; 11-positioning pin, 12-first limiting plate, 13-support beam, 14-fastening nut, 15-second limiting plate; 21-main beam frame, 22-lower guide rail, 23-right guide rail, 24-left guide rail, 25-clamping device, 26-lifting lug, 27-caster, 28-handwheel, 29-movable baffle, 210-fixed baffle, 211-clamping strap, 212-battery pack; 31-support 32-Guide wheel bearing, 33-Column, 34-Washer, 35-Screw, 36-Guide wheel, 37-Right roller bushing, 38-Roller, 39-Left roller bushing, 310-Set screw, 311-Roller shaft, 312-Roller bearing; 41-Adjusting transition plate, 42-Adjusting support block, 43-Adjusting spring, 44-Support ball, 45-Adjusting plug; 51-Energy compartment shell, 52-Dating guide rail assembly, 53-Dating pin hole seat, 54-Guide rail bracket. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The present invention provides a docking and assembly mechanism for a large battery pack inside a cabin. The docking and assembly mechanism includes a modular assembly component 1, a battery pack placement trolley 2, an auxiliary adjustment component, and a docking component inside the cabin.

[0030] The modular assembly 1 is used to assemble several battery modules 3 into a whole, forming a battery pack 212. For example... Figure 1 As shown, the module assembly mechanism 1 includes a positioning pin 11, a fastening nut 14, two or more parallel support beams 13, and two parallel first limiting plates 12 and second limiting plates 15. Each battery module 3 is provided with a through hole for the support beam 13 to pass through.

[0031] Two support beams 13 located at the bottom are vertically fixed at one end to one side of the first limiting plate 12, and a positioning pin 11 is fixed on the other side of the first limiting plate 12. The two positioning pins 11 correspond to the positions of the two support beams 13 at the bottom respectively. All support beams 13 pass through the corresponding battery module 3. The other end of the two support beams 13 located at the bottom passes through the second limiting plate 15, and the two ends of the remaining support beams 13 pass through the first limiting plate 12 and the second limiting plate 15 respectively and are then fixed by fasteners.

[0032] The straightness and parallelism of the support beam 13 must be precisely manufactured according to the design requirements to meet the battery module assembly requirements. In this embodiment, based on the structural characteristics of the battery module 3, each module assembly 1 is provided with four support beams 13, symmetrically arranged on both sides of the vertical symmetry plane of the first limiting plate 12. The first limiting plate 12 is positioned in front, and the second limiting plate 15 in the rear. The front ends of the two bottom support beams 13, the first limiting plate 12, and the two positioning pins 11 are fixed by precision welding. After several battery modules 3 corresponding to each support beam 13 are arranged according to their wiring relationship and assembly sequence, the support beam 13 passes through each corresponding row of battery modules 3.

[0033] The other ends of the two support beams 13 located at the bottom pass through the corresponding through holes of the second limiting plate 15, and the two ends of the remaining support beams 13 pass through the corresponding through holes of the first limiting plate 12 and the second limiting plate 15, respectively, and are then connected by fastening nuts 14. In other words, all battery modules 3 are clamped between the two limiting plates, all battery modules 3 are limited to the support beams 13, and the battery modules 3 and the module assembly 1 are assembled into one unit to form the battery pack 212.

[0034] In this embodiment, the battery module 3, located on the two bottom support beams 13, has a rectangular groove formed at its bottom edge and protrusions on both its left and right sides. Correspondingly, the two limiting plates are provided with rectangular grooves and protrusions in corresponding positions. The rectangular grooves and protrusions are used to cooperate with the battery pack placement trolley 2.

[0035] like Figure 3 As shown, the battery pack placement trolley 2 includes a main beam frame 21, a roller guide rail assembly, a baffle assembly, and a traveling assembly, all mounted on the main beam frame 21. The roller guide rail assembly is used to carry and transport the battery pack 212. The baffle assembly is used to limit the battery pack 212 on the roller guide rail assembly of the battery pack placement trolley 2.

[0036] The main beam frame 21 is a U-shaped open frame structure, formed by splicing aluminum alloy profiles. It features a simple, economical, and practical structure with strong load-bearing capacity. The traveling assembly is located at the bottom of the main beam frame 21; in this embodiment, the traveling assembly uses casters 27 with braking functions. Lifting lugs 26 are also provided on both sides of the main beam frame 21 to facilitate lifting operations.

[0037] The roller guide rail assembly includes a left guide rail 24, a right guide rail 23, and a lower guide rail 22, all arranged along the length of the support beam 13. The battery pack 212 is located within the accommodating space formed by the left guide rail 24, the right guide rail 23, and the lower guide rail 22. The left guide rail 24, the right guide rail 23, and the lower guide rail 22 are respectively installed on the top left side, the top right side, and the bottom of the main beam frame 21, and are used to support the left, right, and bottom sides of the battery pack 212.

[0038] The left guide rail 24 and the right guide rail 23 are each provided with a guide wheel assembly on the side facing the battery pack 212. The guide wheel assembly abuts against the right side and left side of the battery pack 212, respectively. The top of the left guide rail and the right guide rail are each provided with a roller assembly. The roller assembly abuts against the bottom surface of the protrusions provided on the left and right sides of the battery pack, respectively.

[0039] The lower guide rail 22 is located in a rectangular groove at the bottom of the battery pack 212. The roller assembly at the top of the lower guide rail 22 cooperates with the bottom of the rectangular groove. Guide wheel assemblies that cooperate with the two inner sides of the rectangular groove are respectively provided on both sides of the lower guide rail 22.

[0040] The roller and guide wheel assemblies on the left guide rail 24, right guide rail 23, and lower guide rail 22 have the same structure, differing only in the installation position of the guide wheel assemblies. The purpose of the roller and guide wheel assemblies is to guide the battery pack 212 during the pushing process and to reduce frictional resistance.

[0041] The following guide rail is used as an example to explain in detail, such as Figure 4 , 5 As shown, the lower guide rail 22 is mainly a support groove 31, and several rollers 38 are evenly arranged along the length of the support groove 31. Figure 6 As shown, the roller shaft 311 is fixed at both ends to the sides of the support groove 21. A left roller sleeve 39 and a right roller sleeve 37 are respectively provided at the connection between the roller shaft 311 and the support groove 21. The support groove 21, the left roller sleeve 39, and the roller shaft 311 are fixed together by set screws 310. The roller 38 is rotatably connected to the roller shaft 311 via a roller bearing 312. The roller 38 protrudes from the support groove 21 and engages with the bottom of the rectangular groove.

[0042] like Figure 7 As shown, a plurality of guide wheels 36 are evenly arranged on both sides of the support groove 21 along its length. A vertical column 33 is provided at the bottom of the support groove 21. The guide wheels 36 are rolledly connected to the column 33 through guide wheel bearings 32 and are axially limited by washers 34 and screws 35. The guide wheels 36 protrude from the side of the support groove 21 to mate with the two inner sides of the rectangular groove.

[0043] The baffle assembly includes a fixed baffle 210 and a movable baffle 209. The fixed baffle 210 is detachably mounted on the front end of the main beam frame 21, and the rear end of the fixed baffle 210 is provided with a mounting position for engaging with a pin provided on the front end of the first limiting plate 12 in the battery pack 212. The movable baffle 209 is located at the rear end of the main beam frame 21. The lead screw passes through the movable baffle 209 along the length of the support beam 13 and is threadedly connected to it. Rotating the handwheel 28 drives the lead screw to rotate, causing the movable baffle 209 to move back and forth along the lead screw, thereby adjusting the distance between the movable baffle 209 and the fixed baffle 210. This pushes the battery pack 212 to be pressed against the movable baffle 209, clamping the battery pack 212 between the fixed baffle 210 and the movable baffle 209. like Figure 2 As shown, the assembled battery packs 212 are placed on the roller guide rails of the battery pack placement trolley 2 and limited by the baffle assembly. In this embodiment, the battery pack placement trolley 2 is also equipped with a clamping device 25, which clamps the battery packs 212 to the main beam frame 21 through a built-in adjustable clamp 211, facilitating subsequent docking with the energy section cabin, long-distance transportation and hoisting.

[0044] An auxiliary adjustment component is disposed between the roller guide rail assembly and the main beam frame 21, and adjusts its own height to ensure that the roller guide rail assembly evenly supports the battery pack 212. Specifically, in this embodiment, several auxiliary adjustment components are disposed along the length of the support beam between the lower guide rail 22 and the bottom of the main beam frame 21. Figure 8 As shown, the auxiliary adjustment assembly includes an adjustment transition plate 41, an adjustment support block 42, an adjustment spring 43, a support ball 44, and an adjustment screw 45.

[0045] The top of the adjusting screw plug 45 extends into the bottom recess of the adjusting support block 42 and is threadedly connected to the recess. The bottom of the adjusting screw plug 45 extends out of the recess and is supported on the main beam frame 21. The adjusting transition plate 41 is set on the top of the adjusting support block 42.

[0046] The support ball 44 is connected to the inner groove of the adjusting screw plug 45 via an adjusting spring 43. The adjusting spring 43 extends and contracts vertically and is always in a compressed state. The support ball 44 extends out of the groove and abuts against the bottom of the recessed part of the adjusting support block 42. Preferably, the bottom abutment of the recessed part is provided with an arc-shaped groove that matches the curvature of the support ball 44.

[0047] Rotate the adjusting screw 45 to adjust the length of the adjusting screw 45 extending into the recess, thereby adjusting the distance between the lower guide rail 22 and the bottom of the main beam frame 21, so that the roller assembly of the lower guide rail 22 abuts against the bottom of the rectangular groove to support the battery pack 212.

[0048] The auxiliary adjustment components are designed to prevent situations where the three roller guides of the battery pack placement cart 2 cannot simultaneously support the battery pack 212 due to manufacturing defects. This solves the problem of excessive force on one side when the battery pack is placed on the battery pack placement cart 2, causing damage to the battery pack 212. Multiple adjustment components are arranged along the length and can be adjusted independently to ensure even force distribution on the bottom of the battery pack 212, preventing deformation and damage. The auxiliary adjustment components are compact and space-saving, easy to adjust without complicated tools, and suitable for rapid on-site debugging.

[0049] First, ensure that the battery pack 212 is placed on the left guide rail 24 and right guide rail 23 on the battery pack placement vehicle 2. Then, use the rotating adjusting screw 45 to make the lower guide rail 22 contact the bottom of the rectangular groove of the battery pack 212 and bear a certain weight of the battery pack 212.

[0050] The docking assembly is located inside the energy compartment shell 51 and is used to dock with the battery pack placement trolley 2. It ensures that the roller guide rails on the battery pack placement trolley 2 are aligned with the docking guide rails inside the energy compartment, and the docking of large battery packs can be achieved manually.

[0051] like Figure 9 As shown, the in-cabin docking assembly includes a docking guide rail group 52, a docking pin hole seat 53, and a guide rail group bracket 54. The docking guide rail group 52 is used to dock with the roller guide rail group and guide the battery pack 212 into the energy compartment. In this embodiment, the docking guide rail group 52 is provided with a left docking guide rail, a right docking guide rail, and a lower docking guide rail corresponding to the roller guide rail group. The structures of the left docking guide rail, the right docking guide rail, and the lower docking guide rail are consistent with the structures of the left guide rail 24, the right guide rail 23, and the lower guide rail 22. The left docking guide rail, the right docking guide rail, and the lower docking guide rail can be installed in the energy compartment shell 51 through the guide rail group bracket 54. Preferably, an auxiliary adjustment component can be provided between the lower docking guide rail and its corresponding guide rail group bracket 54. The docking pin hole seat is used to cooperate with the pin provided on the first limiting plate 12 to limit the battery pack 212 on the docking guide rail group.

[0052] The working process of this invention is as follows: After several battery modules 3 are grouped into a battery pack 212 by the modular assembly component 1, the first limiting plate 12 of the battery pack 212 faces the fixed baffle 210, and the movable baffle 209 is used to press the battery pack 212 tightly. The energy compartment shell 51 and the battery pack placement trolley 2 are placed on the assembly platform, ensuring that the left docking guide rail and the right docking guide rail are aligned with the left guide rail 24 and the right guide rail 23. The battery pack 212 clamp 211 is removed and the fixed baffle 210 is pulled out. The battery pack 212 can be pushed into the energy compartment shell 51 manually. During the pushing process, the alignment of the pin on the battery pack 212 with the docking pin hole seat 53 of the energy compartment shell 51 is observed. If there is a discrepancy, the battery pack placement trolley 2 is adjusted left and right to realize the battery pack 212 entering the compartment. The direction is reversed when exiting the compartment. This invention realizes the quick and safe assembly of large battery packs, with a simple structure and high safety.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A docking and assembly mechanism for a large battery pack inside a cabin, characterized in that, include: Modular assembly components are used to assemble several battery modules into a whole to form a battery pack; A battery pack placement trolley includes a main beam frame, roller guide rail assemblies all mounted on the main beam frame, a baffle assembly, and a traveling assembly; the roller guide rail assemblies are used to carry and transport the battery pack; the baffle assembly is used to limit the battery pack on the roller guide rail assemblies. An auxiliary adjustment component is disposed between the roller guide rail assembly and the main beam frame, and its height is adjusted to ensure that the roller guide rail assembly evenly supports the battery pack. The in-cabin docking assembly, located inside the energy compartment, includes a docking guide rail assembly and a docking pin hole seat; the docking guide rail assembly is used to dock with the roller guide rail assembly and guide the battery pack into the energy compartment; the docking pin hole seat is used to cooperate with the pin provided on the battery pack to confine the battery pack on the docking guide rail assembly.

2. The in-cabin large battery pack docking and assembly mechanism as described in claim 1, characterized in that, The module assembly includes a positioning pin, a fastener, two or more parallel support beams, and two parallel first limiting plates and second limiting plates. Two support beams at the bottom are vertically fixed at one end to one side of the first limiting plate, and a positioning pin is fixed on the other side of the first limiting plate; all support beams pass through the corresponding battery modules, the other ends of the two support beams at the bottom pass through the second limiting plate, and the two ends of the remaining support beams pass through the first limiting plate and the second limiting plate respectively and are then fixed by fasteners.

3. The in-cabin large battery pack docking and assembly mechanism as described in claim 2, characterized in that, There are two positioning pins, which correspond to the positions of the two bottom support beams respectively.

4. The in-cabin large battery pack docking and assembly mechanism as described in claim 1, characterized in that, The roller guide rail assembly includes a left guide rail, a right guide rail, and a lower guide rail, all arranged along the length of the support beam. The left and right guide rails are each equipped with a guide wheel assembly on the side facing the battery pack. The guide wheel assembly abuts against the two sides of the battery pack respectively. The top of the left and right guide rails is equipped with a roller assembly, which abuts against the bottom surface of the protrusions on both sides of the battery pack respectively. The lower guide rail is located in a rectangular groove at the bottom of the battery pack, and the roller assembly at the top of the lower guide rail cooperates with the bottom of the rectangular groove; guide wheel assemblies are respectively provided on both sides of the lower guide rail to cooperate with the two inner sides of the rectangular groove.

5. The in-cabin large battery pack docking and assembly mechanism as described in claim 4, characterized in that, The docking guide rail group is provided with a left docking guide rail, a right docking guide rail and a lower docking guide rail, corresponding to the roller guide rail group.

6. The in-cabin large battery pack docking and assembly mechanism as described in claim 4, characterized in that, Several auxiliary adjustment components are arranged between the lower guide rail and the main beam frame along the length of the support beam. The auxiliary adjustment components include an adjustment transition plate, an adjustment support block, an adjustment spring, a support ball, and an adjustment screw. The top of the adjusting screw plug extends into the bottom recess of the adjusting support block and is threadedly connected to the recess; the bottom of the adjusting screw plug extends out of the recess and is supported on the main beam frame; the adjusting transition plate is disposed on the top of the adjusting support block. The supporting ball is connected to the inner groove of the adjusting screw by an adjusting spring. The adjusting spring extends and contracts in the vertical direction and is always in a compressed state. The supporting ball extends out of the groove and abuts against the bottom of the recess. Rotate the adjusting screw plug to adjust the length of the adjusting screw plug extending into the recess, thereby adjusting the distance between the lower guide rail and the main beam frame, so that the lower guide rail roller assembly abuts against the bottom of the rectangular groove to support the battery pack.

7. The in-cabin large battery pack docking and assembly mechanism as described in claim 6, characterized in that, The bottom of the recess is provided with an arc-shaped groove that matches the curvature of the supporting sphere.

8. The in-cabin large battery pack docking and assembly mechanism as described in any one of claims 1-7, characterized in that, The baffle assembly includes a fixed baffle and a movable baffle; The fixed baffle is located at the front end of the main beam frame, and the fixed baffle has a mounting position that cooperates with the battery pack pin; The movable baffle is located at the rear end of the main beam frame. The distance between the movable baffle and the fixed baffle can be adjusted by rotating the screw threadedly connected to the movable baffle through the handwheel, so that the battery pack can be clamped between the fixed baffle and the movable baffle.

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