Mobile self-calibration battery pack clustering device and operation method thereof

Abstract

The invention relates to the technical field of battery pack clustering equipment, in particular to a movable type self-calibration battery pack clustering device and an operation method thereof.The device comprises a movable type base, a lifting assembly, a battery conveying assembly and a calibration assembly, and the lifting assembly is used for driving the battery conveying assembly to move in the height direction; the battery conveying assembly is used for conveying the battery pack into the cabinet body cavity; the calibration assembly comprises a lead screw shaft, a sliding frame and a pressure measuring mechanism, the lead screw shaft is arranged on the bottom surface of the battery conveying assembly and provided with a first threaded section and a second threaded section, the sliding frame is slidably connected with the battery conveying assembly and provided with a sliding cavity, a sliding opening is formed in the outer side end face of the sliding cavity, and the pressure measuring mechanism is slidably connected into the sliding cavity. The screw pitch of the first threaded section is smaller than that of the second threaded section, the sliding frame and the pressure measuring mechanism are in transmission connection with the first threaded section and the second threaded section correspondingly, the device can conduct pose calibration on the battery conveying assembly, rapid and accurate positioning is achieved, and the battery pack cluster-entering assembling efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery pack clustering equipment, in particular to a mobile self-calibration battery pack clustering device and an operation method thereof. BACKGROUND

[0002] Battery pack clustering is a key process of energy storage system assembly, and its precise alignment directly affects the assembly efficiency and system safety. With the expansion of energy storage application scenarios, battery pack clustering operations are gradually extended to different outdoor scenarios, such as temporary sites or non-standard production workshops. In such scenarios, the ground is usually not a flat surface, therefore, the relative position of the battery pack and the loading cabinet needs to be calibrated by adjusting the pose of the battery pack carrier.

[0003] In related technologies, battery pack clustering devices are mostly designed for indoor flat sites, and lack the ability to adaptively adjust the pose for battery pack clustering in temporary sites or non-standard assembly workshops. In actual operations in these scenarios, the alignment state of the battery pack and the loading cabinet needs to be observed and judged by the operator, which not only makes it difficult to achieve fast and accurate calibration, but also easily leads to alignment deviation due to human judgment errors and operation delays. This can easily cause collisions, deviations or even drops during the battery pack clustering process, affecting assembly efficiency, and there is a risk of equipment or battery pack damage and safety hazards, which restricts the stability and reliability of the battery pack clustering process in temporary operation scenarios. SUMMARY

[0004] The present application aims to provide a mobile self-calibration battery pack clustering device and an operation method thereof to at least solve the technical problems in the prior art that the battery pack clustering device needs to be continuously observed and aligned by hand when clustering on uneven ground, cannot quickly calibrate the position relationship between the battery pack and the cabinet, and has limited adjustment freedom and inconvenient operation.

[0005] In a first aspect, the present application provides a mobile self-calibration battery pack clustering device, comprising: a mobile base; a lifting assembly comprising a support frame arranged on the mobile base and a lifting platform in sliding connection with the support frame, the lifting platform being capable of sliding along the height direction of the support frame; a battery conveying assembly arranged on the lifting platform, the battery conveying assembly being configured to convey a battery pack into a cabinet cavity along a first direction; The calibration assembly includes a lead screw, a sliding frame, and a pressure measuring mechanism. The lead screw is located on the bottom surface of the battery delivery assembly and has a first threaded section and a second threaded section. The sliding frame is slidably connected to the bottom surface of the battery delivery assembly and has sliding cavities spaced apart along a second direction. The length direction of the sliding cavities is arranged along the first direction, and the outer end faces of the two sliding cavities in the second direction are respectively provided with sliding outlets. The pressure measuring mechanism is slidably connected to the sliding cavities. The pitch of the first threaded section is smaller than that of the second threaded section. The sliding frame and the pressure measuring mechanism are respectively drivenly connected to the first threaded section and the second threaded section. By rotating the lead screw, the sliding frame and the pressure measuring mechanism move synchronously and differentially along the direction of the battery pack entering the cluster. When a portion of the sliding frame extends out of the front end of the battery delivery assembly, the two sets of pressure measuring mechanisms slide synchronously to the sliding outlets and spring open towards the side away from the sliding frame through the sliding outlets, abutting against the two opposite inner sidewalls of the cabinet cavity.

[0006] In some embodiments, the sliding frame has a first nut seat on its bottom surface between the two sliding cavities, which is drivenly connected to the first threaded segment. The end face of the sliding frame facing the nut seat is respectively provided with a limiting groove communicating with the through cavity. The pressure measuring mechanism has a connecting rod on its end face near the limiting groove. The end of the connecting rod away from the pressure measuring mechanism passes through the limiting groove and is connected to the second nut seat. The second nut seat is drivenly connected to the second threaded segment.

[0007] In some embodiments, the pressure measuring mechanism includes a limiting box, a swing arm, and a sensor structure. The limiting box is slidably connected to the slide cavity and has a receiving cavity with an opening facing the slide outlet. One end of the swing arm is rotatably connected to the limiting box within the receiving cavity, and a torsion spring is provided at the connection point. The torsion spring is used to apply a rotational force to the swing arm toward the slide outlet side. The sensor structure is provided on the end face of the swing arm facing the slide outlet side.

[0008] In some embodiments, the swing arm includes a bent portion extending toward the slide outlet side and a mounting portion disposed at one end of the bent portion. The mounting portion has a receiving groove on its end face toward the slide outlet side. The sensor structure is disposed in the receiving groove, and a roller is disposed in the receiving groove near the sensor structure. At least a portion of the roller protrudes from the end face of the mounting portion near the slide outlet side.

[0009] In some embodiments, the sensor structure includes a mounting base disposed within the receiving groove and a pressure sensor retractably connected to the mounting base, wherein the pressure-sensitive end of the pressure sensor faces the slide outlet side.

[0010] In some embodiments, a first elastic telescopic member is provided between the mounting base and the receiving groove, a guide groove is provided on the end face of the mounting base opposite to the first elastic telescopic member, the pressure sensor is disposed in the guide groove, and a second elastic telescopic member is provided between the pressure sensor and the guide groove.

[0011] In some embodiments, a through hole is provided through the bottom of the receiving groove, and a wire is connected to the bottom end face of the mounting base. The end of the wire away from the mounting base extends through the through hole to connect with the inner side wall of the receiving groove. The wire has a tensioned state and a relaxed state. When the wire is in the tensioned state, the mounting base and the pressure sensor are retracted into the receiving groove. When the wire is in the relaxed state, the pressure-sensitive end of the pressure sensor protrudes at least partially from the side end face of the mounting part near the sliding outlet.

[0012] In some embodiments, the end face of the swing arm facing away from the receiving groove is provided with a plurality of guide wheels, the guide wheels being used to constrain the wire drawing to extend to the inner sidewall of the receiving groove after reaching the pivot around the swing arm.

[0013] In some embodiments, the device further includes an angle compensation component disposed between the lifting platform and the battery delivery assembly. The angle compensation component includes adjustment mechanisms disposed at the four bottom corner edges of the battery delivery assembly, and the top of the adjustment mechanisms is movably connected to the battery delivery assembly.

[0014] Compared with the prior art, the technical solution provided in the first aspect of this application has at least the following beneficial effects or advantages: The clustering device provided in this application utilizes a coordinated configuration of a lifting assembly and a battery delivery assembly. The support frame of the lifting assembly is foldable, allowing the lifting platform to slide along the height of the support frame, thereby driving the battery delivery assembly to adjust its height. The battery delivery assembly pushes the battery pack to complete the clustering operation. Simultaneously, a calibration assembly is included, comprising a lead screw, a sliding frame, and a pressure measuring mechanism. The sliding frame is located at the bottom of the battery delivery assembly and has a telescopic function. Two pressure measuring mechanisms are respectively located in the sliding cavities on both sides of the sliding frame. The sliding frame and the pressure measuring mechanisms are respectively connected to the first and second threaded sections with different pitches on the lead screw, facilitating the calibration operation. At the same time, by rotating the lead screw shaft, the sliding frame and the pressure measuring mechanism can move synchronously and differentially along the direction of battery pack insertion. After the sliding frame slides into the cabinet cavity, the pressure measuring mechanism springs away from the sliding frame through the sliding outlet and abuts against the relative inner wall of the cabinet cavity. By collecting two sets of pressure data, the distance between the battery delivery component and the relative inner wall of the cabinet cavity is quantified. In temporary sites or non-standard assembly workshops, the device can directly determine the relative positional relationship between the battery delivery component and the cabinet cavity, and perform positional calibration of the battery delivery component based on the pressure value, achieving rapid and accurate positioning and effectively improving the efficiency of battery pack insertion assembly. At the same time, the automatic extension and retraction design of the calibration component will not interfere with the battery pack insertion operation.

[0015] Secondly, embodiments of this application provide an operating method for a mobile self-calibrating battery pack clustering device as described in any of the first aspects above, characterized in that the method includes: The battery pack is placed on the battery transport assembly by the transfer vehicle, and the battery pack is transferred to the first point by the mobile base. The first point is the initial alignment point between the battery transport assembly and the corresponding cluster frame in the direction of battery pack entering the cluster. The lifting assembly controls the lifting platform to move the battery delivery assembly in the height direction to the second position. The first position is the initial alignment point between the battery delivery assembly and the corresponding cabinet cavity of the cluster frame in the direction of battery pack entering the cluster. Rotate the lead screw of the calibration component to control the sliding frame to extend partially into the cabinet cavity along the direction of the battery pack entering the cluster, and obtain the first pressure value and the second pressure value by popping out the pressure measuring mechanism that abuts against the two opposite inner walls of the cabinet cavity; Based on the first pressure value and the second pressure value, the position of the battery delivery component is adjusted based on the movable base and the angle compensation component, so that the battery delivery component is at the third position, which is the position point where the first pressure value and the second pressure value are equal. Rotate the lead screw shaft to retract the calibration component, and push the battery pack into the cabinet cavity by rotating the hand crank of the battery delivery component to complete the battery pack assembly.

[0016] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the cluster framework provided according to an embodiment of this application; Figure 2 This is a first-view structural schematic diagram of the clustering device provided according to an embodiment of this application; Figure 3 This is a second-view structural schematic diagram of the clustering device provided according to an embodiment of this application; Figure 4 This is a first-view structural schematic diagram of the calibration component provided according to an embodiment of this application; Figure 5 This is a second-view structural schematic diagram of the calibration component provided according to an embodiment of this application; Figure 6 This is a schematic diagram of the pressure measuring mechanism provided according to an embodiment of this application; Figure 7 This is a first-view structural diagram of the swing arm provided according to an embodiment of this application; Figure 8 This is a partial cross-sectional schematic diagram of the sensor structure provided according to an embodiment of this application; Figure 9 This is a schematic diagram of the second-view structure of the swing arm according to an embodiment of this application; Figure 10 This is a schematic diagram of the first state structure of the pressure measuring mechanism in the sliding cavity according to the embodiments of this application; Figure 11 This is a schematic diagram of the second state structure of the pressure measuring mechanism in the sliding cavity according to the embodiments of this application; Figure 12 This is a schematic diagram of the structure of the angle compensation component provided in the embodiments of this application; Figure 13 This is a schematic diagram of the adjustment mechanism provided according to an embodiment of this application.

[0020] Figure label: 1000, Clustering device; 2000, Cluster frame; 2001, Cabinet cavity wall; 100. Movable base; 110. Base body; 111. Wheels; 112. Folding legs; 200. Lifting assembly; 210. Support frame; 211. First hydraulic cylinder; 212. Steel rope; 213. Control box; 220. Lifting platform; 300. Battery conveying assembly; 310. Placement rack; 311. Conveying roller; 320. Hand crank screw; 321. Push plate; 400. Calibration assembly; 410. Leadscrew shaft; 411. First threaded section; 412. Second threaded section; 420. Sliding frame; 421. Sliding cavity; 4211. Sliding outlet; 4212. Limiting through groove; 422. First nut seat; 423. Sliding block; 430. Pressure measuring mechanism; 431. Limiting box; 4311. Receiving cavity; 432. Swing arm; 4321. Bending part; 4322. Mounting part; 43221. Receiving groove; 43222. Roller; 43223. Through hole; 4323. Guide wheel; 4324. Rotating shaft; 4325. Torsion spring; 433. Sensor structure; 4331. Mounting base; 43311. Guide groove; 4332. Pressure sensor; 4333. First elastic telescopic component; 4334. Second elastic telescopic component; 4335. Wire drawing; 440. Connecting rod; 441. Second nut seat; 500. Angle compensation component; 510. Support plate; 520. Adjustment mechanism; 521. Second hydraulic cylinder; 522. Universal ball joint; X, the first direction; Y, the second direction. Detailed Implementation

[0021] The embodiments of this application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figure 1 , Figure 1 The diagram illustrates a cluster frame in the prior art. The cluster frame 2000 may include multiple rows of cavities for placing battery packs. Each row of cavities has multiple cabinet cavities for placing battery packs along its height. During the clustering process, the carrier used by the clustering device to transfer the battery pack needs to be aligned with the cabinet cavity before the battery pack is inserted. Whether the carrier is aligned with the cabinet requires manual observation, making it difficult to quickly calibrate the alignment relationship between the battery pack and the cabinet, especially in temporary sites or non-standard assembly workshops where manual observation is even more challenging. While achieving rapid and accurate calibration, alignment deviations can easily occur due to human error and operational delays, leading to collisions, shifts, or even drops during battery pack assembly. This not only affects assembly efficiency but also poses risks of equipment or battery pack damage and safety hazards, hindering the stability and reliability of the battery pack assembly process in temporary work scenarios. Furthermore, since traditional assembly devices are mostly used for battery pack assembly in standard workshops with relatively flat working surfaces, they often only support single-height adjustment or minor directional adjustments, resulting in insufficient adjustability and an inability to meet the multi-angle pose deviation compensation requirements of complex outdoor terrain.

[0025] Based on this, the inventors propose a mobile self-calibrating battery pack clustering device. During the battery pack clustering process, the device can quantify the relative positional relationship between the battery pack carrier and the cabinet cavity, thereby achieving positional calibration and rapid and accurate positioning, effectively improving the battery pack clustering assembly efficiency. At the same time, it can also achieve multi-degree-of-freedom adjustment, improving the adaptability of the clustering device.

[0026] Please see Figures 2 to 5This embodiment provides a mobile self-calibrating battery pack loading device. The loading device 1000 includes a mobile base 100, a lifting component 200, a battery conveying component 300, and a calibration component 400. The mobile base 100 may include a base body 110, which may be welded from a steel structure. The four corners of the base body 110 may be provided with wheels 111. A folding leg 112 may be provided on the bottom side of the mobile base 100 where the battery pack is loaded. The folding leg 112 can be rotated to fit against the side end face of the base body 110. At the same time, unfolding the folding leg 112 during use can further stabilize the stability of the loading device 1000 during the battery pack transfer process. Of course, in order to fix the mobile base 100, locking casters may be provided at one end of the folding leg 112 and at the four corners formed with part of the wheels 111, so as to further lock it after positioning.

[0027] Furthermore, the lifting assembly 200 includes a support frame 210 mounted on the movable base 100 and a lifting platform 220 slidably connected to the support frame 210. The lifting platform 220 is slidable along the height direction of the support frame 210. For ease of description, the length direction of the lifting platform 220 is defined as the first direction X, and the height direction (thickness direction) of the lifting platform 220 is defined as the second direction Y. The battery delivery assembly 300 is mounted on the lifting platform 220 and is configured to deliver the battery pack along the first direction X into the cabinet cavity. The calibration assembly 400 includes a lead screw 410, a sliding frame 420, and a pressure measuring mechanism 430. The lead screw 410 is mounted on the bottom surface of the battery delivery assembly 300 and has a first threaded section 411 and a second threaded section 412. The sliding frame 420 is slidably connected to the bottom surface of the battery delivery assembly 300 and slides along the height direction of the support frame 210. A sliding cavity 421 is provided at intervals in the second direction Y. The length direction of the sliding cavity 421 is arranged along the first direction X. The outer end faces of the two sliding cavities 421 in the second direction Y are respectively provided with sliding outlets 4211. The pressure measuring mechanism 430 is slidably connected in the sliding cavity 421. The pitch of the first threaded section 411 is smaller than that of the second threaded section 412. The sliding frame 420 and the pressure measuring mechanism 430 are respectively connected to the first threaded section 411 and the second threaded section 412. By rotating the lead screw shaft 410, the sliding frame 420 and the pressure measuring mechanism 430 move synchronously along the direction of the battery pack entering the cluster at a differential speed. When a portion of the sliding frame 420 extends out of the front end of the battery delivery assembly 300, the two sets of pressure measuring mechanisms 430 slide synchronously to the sliding outlet 4211 and spring open towards the side away from the sliding frame 420 through the sliding outlet 4211 and abut against the two opposite inner side walls of the cabinet cavity.

[0028] It should be noted that further reading is required. Figure 2 and Figure 3The support frame 210 is rotatably connected to the base body 110 at its bottom to allow for folding. When unfolded, the support frame 210 is arranged along the second direction Y and perpendicular to the base body 110. To improve the stability of the unfolded state of the support frame 210, a detachable inclined rod can be provided. One end of the inclined rod is connected to the base body 110, and the other end is connected to the support frame 210, forming a triangular profile with the support frame 210. This ensures stability during the lifting process of the support frame 210 in its unfolded state. The automatic lifting of the lifting platform 220 can be driven by a hydraulic cylinder. Specifically, the lifting platform 220 is close to the support frame 210. One edge of the base 210 is slidably connected to the support frame 210 in the second direction Y. The first hydraulic cylinder 211 is mounted on the base body 110 and arranged along the second direction Y. The output end of the telescopic rod of the first hydraulic cylinder 211 can be connected to the lifting platform 220 through the steel cable 212. The top of the support frame 210 can be equipped with a roller 43222 to guide and limit the steel cable 212. Thus, the lifting platform 220 can be raised and lowered in the second direction Y by controlling the extension and retraction of the first hydraulic cylinder 211. At the same time, a control box 213 can be set on one side of the base body 110. The control box 213 can be equipped with, but is not limited to, a hydraulic system and corresponding electrical control components.

[0029] It should also be noted that, in combination Figures 3 to 5 The battery delivery assembly 300 has its entry end protruding from the lifting platform 220 along the first direction X. The sliding frame 420 of the calibration assembly 400 is disposed on the bottom surface of the protruding part of the battery delivery assembly 300 and is slidably connected to the battery delivery assembly 300. The lead screw shaft 410 is disposed along the first direction X. The first threaded section 411 and the second threaded section 412 at one end of the lead screw shaft 410 are respectively connected to the sliding frame 420 and the pressure measuring mechanism 430. The other end extends to the opposite end of the battery delivery assembly 300. The rotation of the lead screw shaft 410 can be manually controlled, for example, by a hand crank. At the same time, since the calibration assembly 400 is performing a pressure test, the sliding frame 420 needs to protrude from one end of the battery delivery assembly 300 so that it can partially extend into the cabinet cavity. The pressure measuring mechanism 430 needs to unfold along the second direction Y in the opposite direction so that it can determine the relative positional relationship between the battery delivery assembly 300 and the cabinet cavity by contacting the opposite side wall of the cabinet cavity and obtaining the pressure value.

[0030] Thus, after calibration, the sliding frame 420 and the pressure measuring mechanism 430 need to be retracted to avoid the battery delivery assembly 300 affecting the battery pack delivery process. Through the setting of the first threaded section 411 and the second threaded section 412, the sliding frame 420 and the pressure measuring mechanism 430 move at different speeds. When a portion of the sliding frame 420 extends out of the front end of the battery delivery assembly 300, the two sets of pressure measuring mechanisms 430 can slide synchronously to the slide outlet 4211 and pop open through the slide outlet 4211 to abut against the two opposite inner side walls of the cabinet cavity. During the retraction process, the sliding frame 420 can retract to the bottom of the battery delivery assembly 300, and at the same time, the pop-out part of the pressure measuring mechanism 430 can retract to the slide cavity 421.

[0031] The clustering device 1000 provided in this embodiment utilizes a coordinated configuration of a lifting assembly 200 and a battery delivery assembly 300. The support frame 210 of the lifting assembly 200 is foldable, and the lifting platform 220 can be driven to slide along the height direction of the support frame 210, thereby driving the battery delivery assembly 300 to achieve height adjustment. The battery delivery assembly 300 is used to push the battery pack to complete the clustering operation. Simultaneously, the calibration assembly 400 includes a lead screw 410, a sliding frame 420, and a pressure measuring mechanism 430. The sliding frame 420 is located at the bottom of the battery delivery assembly 300 and has a telescopic function. The two pressure measuring mechanisms 430 are respectively housed in the sliding cavities 421 on both sides of the sliding frame 420. The sliding frame 420 and the pressure measuring mechanisms 430 are respectively aligned with the first thread segment 411 and the second thread segment 411 on the lead screw 410, which have different pitches. The two threaded sections 412 form a transmission connection. During calibration, by rotating the lead screw shaft 410, the sliding frame 420 and the pressure measuring mechanism 430 can move synchronously and differentially along the direction of battery pack insertion. After the sliding frame 420 slides into the cabinet cavity, the pressure measuring mechanism 430 springs away from the sliding frame 420 through the sliding outlet 4211 and abuts against the relative inner wall of the cabinet cavity. By collecting two sets of pressure data, the distance between the battery delivery component 300 and the relative inner wall of the cabinet cavity is quantified. In temporary sites or non-standard assembly workshops, the relative positional relationship between the battery delivery component 300 and the cabinet cavity can be directly determined, and the battery delivery component 300 can be calibrated according to the pressure value to achieve rapid and accurate positioning and effectively improve the battery pack insertion assembly efficiency. At the same time, the automatic extension and retraction design of the calibration component 400 will not interfere with the battery pack insertion operation.

[0032] In some embodiments, please refer to Figure 3The battery conveying assembly 300 includes a placement frame 310, on which multiple conveying rollers 311 are spaced apart along a first direction X, forming a conveying plane. A hand crank screw 320 is provided on the placement frame 310 along the first direction X. At the same time, a push plate 321 is slidably connected to the placement frame 310. The push plate 321 is connected to the hand crank screw 320. When the hand crank screw 320 is rotated, the push plate 321 can slide along the first direction X on the conveying plane. Thus, when the battery pack is placed on the conveying plane, the push plate 321 slides towards the cabinet cavity by rotating the hand crank screw 320. After contacting one end face of the battery pack, the battery pack is inserted into the cabinet cavity by pushing force. The arrangement of the conveying rollers 311 can further reduce the friction during the movement of the battery pack, thereby facilitating the battery pack insertion operation.

[0033] In some embodiments, see Figure 4 and Figure 5 The sliding frame 420 has a first nut seat 422 on its bottom surface between the two sliding cavities 421, which is connected to the first threaded section 411. The end face of the sliding frame 420 facing the nut seat is provided with a limiting groove 4212 that communicates with the through cavity. The pressure measuring mechanism 430 has a connecting rod 440 on its end face near the limiting groove 4212. The end of the connecting rod 440 away from the pressure measuring mechanism 430 passes through the limiting groove 4212 and is connected to the second nut seat 441. The second nut seat 441 is connected to the second threaded section 412.

[0034] Specifically, a first nut seat 422 is fixedly provided on the bottom wall of the sliding frame 420 in the area between the two sliding cavities 421. The first nut seat 422 forms a threaded transmission engagement with the first threaded section 411 of the lead screw shaft 410 to realize the power transmission between the sliding frame 420 and the lead screw shaft 410. On the end face of the sliding frame 420 facing the first nut seat 422, two sets of symmetrically arranged limiting slots 4212 are provided. Each limiting slot 4212 extends along the length direction of the sliding frame 420, but the limiting slot 4212 does not penetrate through the two ends of the sliding frame 420 in the first direction X. The limiting slot 4212 is in communication with the through cavity of the sliding frame 420 to provide guiding space for the movement of the connecting rod 440. A connecting rod 440 is connected to the end face of the pressure measuring mechanism 430 near the limiting groove 4212 by bolts or rotational connection. The end of the connecting rod 440 away from the pressure measuring mechanism 430 passes through the limiting groove 4212 and forms a detachable fixed or rotatable connection with the second nut seat 441. The internal thread of the second nut seat 441 achieves precise thread engagement with the second thread section 412 of the lead screw shaft 410. With this configuration, when the lead screw shaft 410 rotates, the first nut seat 422 and the second nut seat 441 can perform synchronous and differential linear motion along their corresponding thread sections. The limiting groove 4212 also guides and limits the connecting rod 440, ensuring that the sliding action of the pressure measuring mechanism 430 is precise and controllable, thereby ensuring the stability of the calibration operation of the pressure measuring mechanism 430.

[0035] Optionally, a slider 423 arranged along the first direction X is provided on the top surface of the sliding frame 420. The slider 423 is used to achieve a sliding connection between the sliding frame 420 and the slide groove (not shown in the figure) provided at the bottom of the battery delivery assembly 300.

[0036] In some embodiments, please refer to Figure 6 and Figure 7The pressure measuring mechanism 430 includes a limiting box 431, a swing arm 432, and a sensor structure 433. The limiting box 431 is slidably connected to the sliding cavity 421 and has a receiving cavity 4311 with an opening facing the sliding outlet 4211. One end of the swing arm 432 is rotatably connected to the limiting box 431 within the receiving cavity 4311, and a torsion spring 4325 is provided at the connection. The torsion spring 4325 is used to apply a rotational force to the swing arm 432 towards the sliding outlet 4211. The end face of the swing arm 432 facing the sliding outlet 4211 is provided with the sensor structure 433. Specifically, the limiting box 431 and the sliding cavity 421 form a clearance-fit sliding connection, and its outer peripheral wall fits against the inner side wall of the sliding cavity 421 to ensure sliding stability. The limiting box 431 has an opening along its own length. The extended receiving cavity 4311 has an opening at its side end. When the limiting box 431 slides to the point where the opening is aligned with the slide outlet 4211, it provides space for the extension and retraction of the swing arm 432. At the same time, a torsion spring 4325 is fitted around one end of the pivot 4324 of the swing arm 432, which is rotatably connected to the inner wall of the receiving cavity 4311. One end of the torsion spring 4325 is fixed in a pre-set slot (not shown in the figure) of the limiting box 431, and the other end abuts against a pre-set slot (not shown in the figure) of the swing arm 432, forming an elastic bias structure. This structure continuously applies a force to the swing arm 432 to rotate around the pivot 4324 toward the slide outlet 4211, so that the distal end of the swing arm 432 always has the tendency to extend out of the slide outlet 4211. The sensor structure 433 is preferably a miniature pressure sensor 4332, with its sensing surface exposed and adapted to the rotation trajectory of the swing arm 432, to ensure uniform force distribution when in contact with the inner wall of the cabinet cavity.

[0037] In some embodiments, please refer to Figure 7 The swing arm 432 includes a bent portion 4321 extending toward the slide outlet 4211, and a mounting portion 4322 disposed at one end of the bent portion 4321. The mounting portion 4322 has a receiving groove 43221 on its end face toward the slide outlet 4211. The sensor structure 433 is disposed within the receiving groove 43221, and a roller 43222 is disposed within the receiving groove 43221 near the sensor structure 433. At least a portion of the roller 43222 protrudes from the mounting portion 4322 near the slide outlet 4211. Specifically, the swing arm 432 can adopt an integrated molding structure. The bending part 4321 ensures that the end face of the mounting part 4322 inside the slide cavity 421 is parallel to the end face of the slide cavity 421, and that when the mounting part 4322 pops out, it forms an abutment posture with the inner side wall of the cabinet cavity as much as possible. The side end face of the mounting part 4322 facing the slide outlet 4211 has a receiving groove 43221 adapted to the sensor structure 433. This receiving groove 43221 is used to accommodate the extension and retraction of the sensor structure 433. The pressure-sensitive end of the sensor structure 433 is flush with the opening of the receiving groove 43221.

[0038] Furthermore, a roller 43222 is rotatably connected within the receiving groove 43221 near the outer region of the sensor structure 433. The axis of the roller 43222 is perpendicular to the rotation plane of the swing arm 432, and at least a portion of the outer circumferential surface of the roller 43222 protrudes from the side end face of the mounting portion 4322 facing the slide outlet 4211. The roller 43222 is preferably made of wear-resistant engineering plastic or stainless steel, and its core function is to reduce the resistance during the movement of the swing arm 432 by replacing sliding friction with rolling friction.

[0039] In some embodiments, please refer to Figure 8 The sensor structure 433 includes a mounting base 4331 disposed in a receiving groove 43221 and a pressure sensor 4332 retractably connected to the mounting base 4331. The pressure-sensitive end of the pressure sensor 4332 faces the sliding outlet 4211. Furthermore, a first elastic telescopic member 4333 is disposed between the mounting base 4331 and the receiving groove 43221. A guide groove 43311 is opened on the end face of the mounting base 4331 away from the first elastic telescopic member 4333. The pressure sensor 4332 is disposed in the guide groove 43311. A second elastic telescopic member 4334 is disposed between the pressure sensor 4332 and the guide groove 43311.

[0040] Specifically, the first elastic telescopic member 4333 and the second elastic telescopic member 4334 are preferably cylindrical helical springs with telescopic extension. The first elastic telescopic member 4333 is in a pre-compressed state, providing elastic pre-tightening force to the mounting base 4331 towards the sliding outlet 4211. The guide groove 43311 is used to limit and guide the pressure sensor 4332. The second elastic telescopic member 4334 is provided between the fixed end of the pressure sensor 4332 and the bottom of the guide groove 43311. The elastic coefficient of the second elastic telescopic member 4334 can be smaller than that of the first elastic telescopic member 4333. When the pressure sensor 4332 contacts the inner wall of the cabinet cavity, the second elastic telescopic member 4334 first undergoes slight compression to achieve instantaneous pressure buffering and prevent the sensor from being damaged by impact load. If the contact pressure exceeds a preset threshold, the first elastic telescopic member 4333 compresses synchronously to further absorb the load. At the same time, through displacement feedback of two-stage elastic deformation, it assists the pressure sensor 4332 in achieving accurate acquisition of pressure signals, effectively improving detection accuracy and the sensor's impact resistance.

[0041] In some embodiments, please refer to Figure 9A through hole 43223 is provided through the bottom of the receiving groove. A wire 4335 is connected to the bottom end face of the mounting base 4331. The end of the wire 4335 away from the mounting base 4331 extends through the through hole 43223 and connects to the inner side wall of the receiving groove 43221. The wire 4335 has a tensioned state and a relaxed state. When the wire 4335 is in the tensioned state, the mounting base 4331 and the pressure sensor 4332 are retracted into the receiving groove 43221. When the wire 4335 is in the relaxed state, the pressure-sensitive end of the pressure sensor 4332 protrudes at least partially from the side end face of the mounting part 4322 near the slide outlet 4211. Specifically, the bottom end face of the mounting base 4331 can be fixedly connected to the wire 4335 by snap-fit ​​or crimping. The wire 4335 is preferably made of high-strength stainless steel wire or carbon fiber wire, which has the characteristics of high strength and low elongation. The end of the wire 4335 facing away from the mounting base 4331 passes through the through hole 43223, extends along a preset path, and forms a fixed connection with the inner wall of the receiving groove 43221. For details, please refer to Figure 10 and Figure 11 The wire 4335 has a clear tension and relaxation state: when the sliding frame 420 is not slid into the cabinet cavity, the wire 4335 is in a tension state, and the mounting base 4331 and pressure sensor 4332 are constricted into the receiving groove 43221 by the tension, reducing the damage caused by the exposed parts when not in operation; when the sliding frame 420 slides into the cabinet cavity through the sliding outlet 4211 and reaches the preset position, the wire 4335 is gradually switched to a relaxation state. At this time, under the pre-tightening force of the first elastic telescopic member 4333, the mounting base 4331 drives the pressure sensor 4332 to extend towards the sliding outlet 4211, so that the pressure-sensitive end of the pressure sensor 4332 protrudes at least partially from the side end face of the mounting part 4322 facing the sliding outlet 4211, ensuring effective contact with the cabinet cavity wall 2001.

[0042] Optional, please continue reading Figure 9Multiple guide wheels 4323 are provided on the end face of the swing arm 432 away from the receiving groove 43221. The guide wheels 4323 are used to constrain the wire drawing 4335 to extend to the inner wall of the receiving groove 43221 after reaching the pivot 4324 surrounding the swing arm 432. Specifically, multiple guide wheels 4323 are rotatably connected to the end face of the swing arm 432 away from the receiving groove 43221 through the pivot 4324. The arrangement position of the guide wheels 4323 is adapted to the extension path of the wire drawing 4335, and is used to change the force direction of the wire drawing 4335 and limit its movement. Specifically, after the wire 4335 passes through the through hole 43223, it passes around each guide wheel 4323 in sequence and surrounds the rotation shaft 4324 of the swing arm 432, and is finally fixed to the inner side wall of the receiving groove 43221. The outer circumferential surface of the guide wheel 4323 can be provided with an annular guide groove 43311, which can prevent the wire 4335 from leaving the preset path during the movement. At the same time, the rolling contact reduces the friction loss between the wire 4335 and the swing arm 432, ensuring that the wire 4335 moves smoothly and without jamming when switching between the tension and relaxation states, and ensuring the reliability of the extension and retraction of the pressure sensor 4332.

[0043] In some embodiments, please refer to Figure 12 and Figure 13 The clustering device 1000 also includes an angle compensation component 500 disposed between the lifting platform 220 and the battery delivery assembly 300. The angle compensation component 500 may include a support plate 510 disposed on the lifting platform 220 and an adjustment mechanism 520 disposed at the four corner edges of the bottom of the battery delivery assembly 300. The top end of the adjustment mechanism 520 is movably connected to the battery delivery assembly 300, and the other end is fixedly connected to the support plate 510. Specifically, the adjustment mechanism 520 may include four second hydraulic cylinders 521 mounted on the support plate 510 and a universal ball seat 522 disposed at the output end of the second hydraulic cylinders 521. The second hydraulic cylinders 521 are detachably fixedly connected to the support plate 510 through a flange. The universal ball seat 522 is fixed to the output end of the second hydraulic cylinders 521 by threaded connection or welding. It includes a ball socket fixed to the piston rod and a ball head that can rotate 360°. The end of the ball head away from the ball socket forms a movable hinge with a pre-set connecting seat at the bottom of the battery delivery assembly 300.

[0044] It should be noted that the angle compensation component 500 can independently control the extension and retraction of the four sets of second hydraulic cylinders 521 based on the two pressure values ​​obtained by the pressure measuring mechanism 430 and the detected pitch and roll angle deviations. For the side with a higher angle, the corresponding second hydraulic cylinder 521 is shortened; for the side with a lower angle, the corresponding second hydraulic cylinder 521 is extended. With the multi-angle adaptive adjustment capability of the universal ball seat 522, the battery delivery component 300 can achieve fine-tuning of its posture on the horizontal plane, ultimately ensuring that the pushing end face of the battery delivery component 300 is completely parallel to the inlet end face of the cabinet cavity wall 2001. This setting not only offsets the effects of installation errors of the lifting platform 220, uneven ground, or cabinet placement deviations, but also avoids jamming and bumping problems caused by angle deviations when the battery pack is inserted into the cluster, further improving assembly accuracy and operational stability.

[0045] In some embodiments, an operation method is also provided for a mobile self-calibrating battery pack clustering device as described in any of the foregoing embodiments, the operation method comprising: Step S10: The transfer vehicle places the battery pack on the battery transport assembly, and the battery pack is transferred to the first point by the movable base. The first point is the initial alignment point between the battery transport assembly and the corresponding cluster frame in the direction of battery pack entering the cluster. Step S20: Control the lifting platform through the lifting component to move the battery delivery component to the second position in the height direction. The first position is the initial alignment point between the battery delivery component and the cabinet cavity corresponding to the cluster frame in the direction of battery pack entry into the cluster. Step S30: Rotate the lead screw of the calibration component to control the sliding frame to extend partially into the cabinet cavity along the direction of the battery pack entering the cluster, and obtain the first pressure value and the second pressure value by popping out the pressure measuring mechanism that abuts against the two opposite inner walls of the cabinet cavity; Step S40: Based on the first pressure value and the second pressure value, adjust the position of the battery delivery component based on the movable base and the angle compensation component respectively, so that the battery delivery component is at the third position, which is the position point where the first pressure value and the second pressure value are equal. In this step, the deviation between the first and second pressure values ​​can be calculated using a built-in algorithm: if there is a difference between the two pressure values, it is determined that the battery delivery component has a positional deviation in the horizontal direction (left-right offset) or the angular direction (pitch / tilt). For horizontal offset deviation, the movable base is controlled to translate in the horizontal plane; for angular deviation, the extension and retraction of the four independent second hydraulic cylinders of the angle compensation component are adjusted (angle fine-tuning accuracy ±0.1°) to achieve attitude correction of the battery delivery component. During the adjustment process, the pressure measuring mechanism continuously collects pressure signals and provides feedback, forming a closed-loop control until the first and second pressure values ​​are equal and stable. At this point, the battery delivery component reaches the third position. The third position is a precise positioning point where the center line of the battery delivery component push is completely aligned with the axis of the cabinet cavity, and the push end face is parallel to the inlet end face of the cabinet cavity, providing a core guarantee for the smooth entry of the battery pack into the cluster.

[0046] Step S50: Rotate the lead screw shaft to retract the calibration component, and push the battery pack into the cabinet cavity by rotating the hand crank of the battery delivery component to complete the battery pack assembly.

[0047] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0050] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A mobile self-calibrating battery pack clustering device, characterized in that, include: Portable base; The lifting assembly includes a support frame disposed on the movable base and a lifting platform slidably connected to the support frame, the lifting platform being able to slide along the height direction of the support frame; A battery delivery assembly is disposed on the lifting platform, and the battery delivery assembly is configured to deliver a battery pack into the cabinet cavity along a first direction. The calibration assembly includes a lead screw, a sliding frame, and a pressure measuring mechanism. The lead screw is located on the bottom surface of the battery delivery assembly and has a first threaded section and a second threaded section. The sliding frame is slidably connected to the bottom surface of the battery delivery assembly and has sliding cavities spaced apart along a second direction. The length direction of the sliding cavities is arranged along the first direction, and the outer end faces of the two sliding cavities in the second direction are respectively provided with sliding outlets. The pressure measuring mechanism is slidably connected to the sliding cavities. The pitch of the first threaded section is smaller than that of the second threaded section. The sliding frame and the pressure measuring mechanism are respectively drivenly connected to the first threaded section and the second threaded section. By rotating the lead screw, the sliding frame and the pressure measuring mechanism move synchronously and differentially along the direction of the battery pack entering the cluster. When a portion of the sliding frame extends out of the front end of the battery delivery assembly, the two sets of pressure measuring mechanisms slide synchronously to the sliding outlets and spring open towards the side away from the sliding frame through the sliding outlets, abutting against the two opposite inner sidewalls of the cabinet cavity.

2. The mobile self-calibrating battery pack clustering device according to claim 1, characterized in that, The sliding frame has a first nut seat on its bottom surface between the two sliding cavities, which is connected to the first threaded segment. The end face of the sliding frame facing the nut seat is provided with a limiting groove that communicates with the through cavity. The pressure measuring mechanism has a connecting rod on its end face near the limiting groove. The end of the connecting rod away from the pressure measuring mechanism passes through the limiting groove and connects to the second nut seat. The second nut seat is connected to the second threaded segment.

3. The mobile self-calibrating battery pack clustering device according to claim 1 or 2, characterized in that, The pressure measuring mechanism includes a limiting box, a swing arm, and a sensor structure. The limiting box is slidably connected to the sliding cavity and has a receiving cavity with an opening facing the sliding outlet. One end of the swing arm is rotatably connected to the limiting box within the receiving cavity, and a torsion spring is provided at the connection. The torsion spring is used to apply a rotational force to the swing arm toward the sliding outlet side. The sensor structure is provided on the end face of the swing arm facing the sliding outlet side.

4. The mobile self-calibrating battery pack clustering device according to claim 3, characterized in that, The swing arm includes a bent portion extending toward the slide outlet side, and a mounting portion disposed at one end of the bent portion. The mounting portion has a receiving groove on its end face toward the slide outlet side. The sensor structure is disposed in the receiving groove, and a roller is disposed in the receiving groove near the sensor structure. At least a portion of the roller protrudes from the end face of the mounting portion near the slide outlet side.

5. The mobile self-calibrating battery pack clustering device according to claim 4, characterized in that, The sensor structure includes a mounting base disposed in the receiving groove and a pressure sensor retractably connected to the mounting base, wherein the pressure-sensitive end of the pressure sensor faces the sliding outlet side.

6. The mobile self-calibrating battery pack clustering device according to claim 5, characterized in that, A first elastic telescopic member is provided between the mounting base and the receiving groove. A guide groove is provided on the side end face of the mounting base opposite to the first elastic telescopic member. The pressure sensor is disposed in the guide groove. A second elastic telescopic member is provided between the pressure sensor and the guide groove.

7. The mobile self-calibrating battery pack clustering device according to claim 6, characterized in that, The bottom of the receiving groove has a through hole, and the bottom end face of the mounting base is connected to a wire. The end of the wire away from the mounting base extends through the through hole to connect with the inner side wall of the receiving groove. The wire has a taut state and a slack state. When the wire is taut, the mounting base and the pressure sensor are retracted into the receiving groove. When the wire is slack, the pressure-sensitive end of the pressure sensor protrudes at least partially from the side end face of the mounting part near the sliding outlet.

8. The mobile self-calibrating battery pack clustering device according to claim 7, characterized in that, The end face of the swing arm away from the receiving groove is provided with multiple guide wheels, which are used to constrain the wire drawing to extend to the inner wall of the receiving groove after the pivot around the swing arm.

9. The mobile self-calibrating battery pack clustering device according to claim 1, characterized in that, The device further includes an angle compensation component disposed between the lifting platform and the battery delivery assembly. The angle compensation component includes adjustment mechanisms disposed at the four corner edges of the bottom of the battery delivery assembly, and the top of the adjustment mechanism is movably connected to the battery delivery assembly.

10. A method of operation for a mobile self-calibrating battery pack clustering device as described in any one of claims 1-9, characterized in that, The method includes: The battery pack is placed on the battery transport assembly by the transfer vehicle, and the battery pack is transferred to the first point by the mobile base. The first point is the initial alignment point between the battery transport assembly and the corresponding cluster frame in the direction of battery pack entering the cluster. The lifting assembly controls the lifting platform to move the battery delivery assembly to the second position in the height direction. The first position is the initial alignment point between the battery delivery assembly and the corresponding cabinet cavity of the cluster frame in the direction of battery pack entering the cluster. Rotate the lead screw of the calibration component to control the sliding frame to extend partially into the cabinet cavity along the direction of the battery pack entering the cluster, and obtain the first pressure value and the second pressure value by popping out the pressure measuring mechanism that abuts against the two opposite inner walls of the cabinet cavity; Based on the first pressure value and the second pressure value, the position of the battery delivery component is adjusted based on the movable base and the angle compensation component, so that the battery delivery component is at the third position, which is the position point where the first pressure value and the second pressure value are equal. Rotate the lead screw shaft to retract the calibration component, and push the battery pack into the cabinet cavity by rotating the hand crank of the battery delivery component to complete the battery pack assembly.

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