Full-plate cell shoulder plasma cleaning device

Abstract

The utility model relates to power battery cleaning technical field especially, and it is a kind of full pressure plate electric core shoulder plasma cleaning device, including compression assembly, cleaning robot and control unit;Compression assembly includes mainframe, compression mechanism, lift mechanism of drive compression mechanism, jacking positioning mechanism below compression mechanism, and the cleaning head connected with robot mainframe includes plasma torch, camera assembly and laser range finder, and the electric core shoulder is fixed and exposed from the upper and lower sides of battery tray by compression mechanism and jacking positioning mechanism.Control unit controls laser range finder to carry out scanning ranging to battery module, and camera assembly records the position trajectory of electric core shoulder, and plasma torch carries out plasma cleaning to electric core shoulder one by one.The utility model can solve the technical problems of poor cleaning position accuracy, low cleaning efficiency and high labor cost in the existing electric core shoulder cleaning process.

Description

Technical Field

[0001] This utility model relates to the field of power battery cleaning technology, and in particular to a plasma cleaning device for the shoulder of a full-plate battery cell. Background Technology

[0002] With the continuous development of power battery technology in the new energy industry, higher requirements have been placed on the production process and production line flow of new energy batteries. In certain specific processes, before the modules are assembled into battery packs, the shoulders of the cells need to be cleaned to meet the requirements of subsequent laser welding.

[0003] The cell shoulder refers to the area where the positive and negative terminals of the cell connect to the metal casing cover. This area is where the module connectors are subsequently laser-welded. During cell manufacturing and transportation, the cell shoulder inevitably becomes contaminated with various pollutants. Thoroughly cleaning and activating the cell shoulder area ensures that the subsequent laser welding process meets high-quality requirements, thereby guaranteeing the safety, reliability, and consistency of the battery module. Currently, in the battery module production process, the cell shoulder is mostly cleaned manually or semi-automatically. This makes it difficult to guarantee the accuracy of the cleaning position, and the cleaning efficiency is low and the cleaning cost is high, all of which fail to meet the needs of modern automated production. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a plasma cleaning device for the shoulder of a full-plate battery cell, which can realize fully automatic cleaning of the shoulder of a large-area water-cooled module, improve the working efficiency and automation of battery cell shoulder cleaning, and solve the technical problems of poor cleaning position accuracy, low cleaning efficiency and high labor costs in the existing battery cell shoulder cleaning process.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: One technical solution of this utility model provides a plasma cleaning device for the shoulder of a full-plate battery cell, including a pressing assembly, a cleaning robot, and a control unit that electrically connects the pressing assembly and the cleaning robot; The pressing assembly includes a main frame, a lifting mechanism mounted on the main frame, a pressing mechanism connected to the lifting mechanism, and a lifting and positioning mechanism located below the pressing mechanism. When the AGV trolley carrying the battery tray enters the cleaning station inside the main frame, the control unit controls the lifting and positioning mechanism to lift the battery tray upwards, while the lifting mechanism drives the pressing mechanism to move downwards and press it onto the surface of the battery module, exposing the shoulder of the battery cell. The cleaning robot includes a robot host located on the side of the main frame and a cleaning head connected to the robot host. The cleaning head includes a plasma spray gun, a camera assembly, and a laser rangefinder. The control unit controls the laser rangefinder to scan and measure the distance of the battery module, and records the position trajectory of the battery cell shoulder through the camera assembly. The plasma spray gun performs plasma cleaning on the battery cell shoulder one by one.

[0006] Furthermore, the lifting mechanism includes a lifting frame and a pressing cylinder vertically disposed below the lifting frame. The main frame includes a vertically disposed column with a linear guide rail vertically disposed on the column. The lifting frame is slidably connected to the linear guide rail through a slider seat. The piston rod end of the pressing cylinder is fixedly connected to the lifting frame, and the pressing cylinder drives the lifting frame to move up and down along the linear guide rail.

[0007] Furthermore, the pressing mechanism includes a pressing frame connected to the lifting frame. Multiple sets of pressure plates are spaced apart below the pressing frame. Springs are connected between the pressure plates and the pressing frame. The pressure plates are used to press the surface of the battery module. The springs play a buffering role during the pressing process to prevent the pressure plates from excessively pressing the battery module and causing damage.

[0008] When the AGV trolley carrying the battery tray enters the cleaning station inside the main frame, the pressing cylinder drives the lifting frame to move downward along the linear guide rail, causing the pressing frame and the pressure plate to press downward onto the surface of the battery module at the same time; after cleaning, the pressing cylinder drives the lifting frame to lift upward, and the pressure plate detaches from the battery module, leaving space for the AGV trolley to leave the station.

[0009] Furthermore, the pressure plate includes a metal plate, an insulating plate, and a fireproof plate. The metal plate is connected to the bottom of the pressing frame by a connector to ensure the structural strength of the pressure plate. The insulating plate is sandwiched between the metal plate and the fireproof plate to prevent short circuits in the battery cell. The fireproof plate is used to press and abut against the battery module and also serves as a fireproofing agent.

[0010] Furthermore, each end of the pressing frame is connected to a movable pressing mechanism. The movable pressing mechanism includes a servo motor assembly and a fine-tuning plate that is linked to the output end of the servo motor assembly. The servo motor assembly is fixed on the lifting frame, and the fine-tuning plate is fixedly connected to the end of the pressing frame.

[0011] By using a servo motor to drive the fine-tuning plate to move the pressing frame, the position of the pressing frame can be finely adjusted in the horizontal direction, thereby precisely adjusting the pressing position between the pressing plate and the battery module, and accurately exposing the shoulder of the battery cell for plasma cleaning.

[0012] Furthermore, the two ends of the pressing frame are connected to a changing mechanism, which includes a horizontally arranged changing cylinder one and a vertically arranged changing cylinder two. The first type-changing cylinder is fixed on the fine-tuning plate, and the piston rod end of the first type-changing cylinder is coaxially connected to the limit base, and the limit base is slidably connected to the fine-tuning plate. The pressing frame is fixed with end plates at both ends, and a locking frame is fixed on the end plates. The second changing cylinder is fixedly connected to the locking frame. The piston rod end of the second changing cylinder is coaxially connected to the insert block. The limiting base is provided with an opening slot to insert the insert block. The locking frame is provided with a pressure roller inside. The end of the limiting base extends into the locking frame and abuts against the pressure roller. Multiple support blocks are fixed below both ends of the pressing frame along the width direction, and the support blocks are located outside the spring and the pressure plate.

[0013] Because different battery module models have different cell arrangements and sizes, the positions of the cell shoulders are naturally different, and the corresponding pressure plate structures are also different. When a changeover is required, the second changeover cylinder drives the insert block to move upward along the Z-axis, disengaging the insert block from the opening slot. The first end plate changeover cylinder drives the limit base to retract backward along the Y-axis, disengaging from the pressure roller. The pressing frame can then detach from the lifting frame. When the pressing frame is transported out of the station by the changing trolley, the set support block abuts against the support seat at the top of the changing bracket fixed on the changing trolley, which can prevent damage to the springs and pressure plates below the pressing frame during transportation.

[0014] Furthermore, four sets of swing cylinders are fixed on the lifting frame, with one set of swing cylinders at each end of each end plate. The piston rod end of the swing cylinder is connected to a swing rod, and the bottom end of the swing rod abuts against the upper surface of the end plate. By driving the swing rods to abut against the pressing frame through the swing cylinders at the four corners, the position of the pressing plate on the pressing frame is kept horizontal, thereby enabling precise and stable pressing onto the surface of the battery module.

[0015] Furthermore, the lifting and positioning mechanism includes a lifting base located below the main frame, a lifting bracket slidably connected vertically to the lifting base, and a lifting cylinder horizontally fixed inside the lifting base. A wedge block is connected to the piston rod end of the lifting cylinder, and the wedge block is slidably connected horizontally to the lifting base. The bottom of the lifting bracket is provided with a lifting wheel that abuts against the wedge block.

[0016] The lifting base is also equipped with clamping mechanisms at both ends. The clamping mechanism includes a clamping cylinder fixed to the lifting base. The piston rod end of the clamping cylinder is connected to a clamping block. The clamping cylinder on the opposite side of the lifting base drives the clamping block to extend inward in a horizontally opposite direction to limit the AGV trolley and ensure that the AGV trolley stops at the lifting station during the plasma cleaning process, so as to avoid the battery tray from shifting its lifting and lowering position.

[0017] The lifting cylinder drives the wedge block to slide horizontally relative to the lifting base, and the lifting wheel moves relative to the wedge surface of the wedge block, thereby driving the lifting wheel to move the lifting bracket to achieve lifting and lowering. When the AGV trolley carrying the battery module enters the lifting station inside the main frame, the lifting cylinder drives the lifting bracket to move upward through the wedge block and the lifting wheel, lifting the battery tray on the AGV trolley upward and detaching it from the trolley. In conjunction with the pressing mechanism above, the battery module is pressed and limited, exposing the shoulder of the battery cell. The cleaning robot then cleans them one by one. After cleaning, the lifting cylinder drives the lifting bracket to move downward, placing the battery tray on the AGV trolley and transporting it out of the workstation.

[0018] Furthermore, the column is equipped with a fall prevention mechanism, which includes a fall prevention cylinder. The piston rod end of the fall prevention cylinder is connected to a fall prevention pin. A connecting plate is fixed between the lifting frame and the slider seat, and the connecting plate has a fall prevention insertion hole that matches the fall prevention pin. When the pressing cylinder drives the lifting frame to rise to a designated height, the fall prevention cylinder drives the fall prevention pin to extend into the fall prevention insertion hole for locking and limiting, preventing the lifting frame from accidentally falling due to power or gas outages.

[0019] Furthermore, the control unit includes an integrated electrical cabinet, a robot control cabinet, a plasma cleaning control cabinet, and a dust removal control cabinet; the cleaning head is equipped with a dust suction port connected to the dust removal control cabinet, and while the plasma spray gun performs plasma cleaning on the shoulder of each battery cell, the dust is removed from the cleaning area in a timely manner through the dust suction port; the pressing assembly is surrounded by a grating fence, and the grating fence has a passageway for the AGV trolley to enter and exit.

[0020] This utility model has the following beneficial effects: The plasma cleaning device for the shoulder of the full-pressure plate battery cell provided by this utility model can realize fully automatic cleaning of the shoulder of the large-area water-cooled module. It can accurately clean the shoulder of the battery cell, thoroughly remove microscopic organic matter and weak boundary layers, and at the same time, it will not affect other parts of the battery cell. It can make the laser welding process parameters highly standardized and ensure that the welding quality of the battery cell is highly consistent. This utility model's cleaning device can achieve fully automated cleaning even for battery modules weighing up to 600KG on the market. The battery modules are automatically transported to the cleaning station by an AGV trolley. A lifting and positioning mechanism raises the tray carrying the battery modules, while a lifting mechanism drives a pressing mechanism to press the battery modules down, covering and protecting the rest of the cells except for the shoulder opening area. A cleaning robot combined with machine vision performs position addressing compensation to determine the cleaning trajectory and automatically perform plasma cleaning on each cell. At the same time, dust is removed from the cleaning area, thereby improving the efficiency and automation of the cell shoulder cleaning, reducing production costs, and ensuring the standardization and consistency of cell laser welding. Furthermore, by setting up a changeover mechanism to replace different pressing mechanisms, rapid changeover can be achieved to meet the shoulder cleaning requirements of different battery module models. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the plasma cleaning device for the shoulder of the full-pressure plate battery cell in this utility model; Figure 2 This is a three-dimensional structural diagram of the medium-pressure assembly and the AGV trolley in this utility model; Figure 3 This is a top view of the pressing assembly in this utility model; Figure 4 This is a three-dimensional structural diagram of the pressing assembly without a lifting and positioning mechanism in this utility model; Figure 5 This is a three-dimensional structural diagram of the main frame and part of the lifting mechanism in this utility model; Figure 6 yes Figure 4 A magnified view of the area marked "A" in the image. Figure 7 This is a cross-sectional three-dimensional structural diagram of the moving pressing mechanism and the changing mechanism in this utility model; Figure 8 This is a structural schematic diagram of the pressing mechanism in this utility model from the bottom view. Figure 9 yes Figure 8 A magnified view of the area marked "B" in the middle; Figure 10 This is a schematic diagram of the transformation trolley carrying the press-fit frame; Figure 11 This is a three-dimensional structural diagram of the cleaning head in this utility model; Figure 12 This is a three-dimensional structural diagram of the lifting and positioning mechanism in this utility model.

[0022] Explanation of the labels in the diagram: 1. Pressing assembly; 11. Main frame; 111. Column; 12. Lifting mechanism; 121. Lifting frame; 122. Pressing cylinder; 123. Linear guide rail; 124. Slider seat; 125. Connecting plate; 1251. Anti-fall insertion hole; 13. Pressing mechanism; 131. Pressing frame; 132. Pressure plate; 1321. Metal plate; 1322. Insulating plate; 1323. Fireproof plate; 1324. Connector; 133. Spring; 134. Moving pressing mechanism; 1341. Servo motor assembly; 1342. Fine-tuning plate; 135. Changing mechanism; 1351. Changing cylinder one; 1352. Changing cylinder two; 1353. Limiting base; 1354. Locking frame; 1355. Insert block; 1356. Opening slot; 1357. Pressure roller; 136. End plate; 137. Swing cylinder; 138. Swing rod; 139. Support block; 14. Lifting and positioning mechanism; 141. Lifting base; 142. Lifting bracket; 143. Lifting cylinder; 144. Wedge block; 145. Lifting wheel; 146. Clamping mechanism; 147. Clamping cylinder; 148. Clamping block; 149. Guide rail; 15. Fall arrest mechanism; 151. Fall arrest cylinder; 152. Fall arrest pin; 16. Locking bar; 2. Cleaning robot; 21. Robot main unit; 22. Cleaning head; 221. Plasma spray gun; 222. Camera assembly; 223. Dust suction port; 224. Laser rangefinder; 225. Micro switch; 3. Control unit; 31. Integrated electrical cabinet; 32. Robot control cabinet; 33. Plasma cleaning control cabinet; 34. Dust removal control cabinet; 35. Cantilever crane; 4. Light grating fence; 41. Access point; 100. AGV trolley; 200. Battery tray; 300. Battery module; 400. Battery cell shoulder; 500. Transformation trolley; 501. Transformation bracket; 502. Support base. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be introduced in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment.

[0024] In the description of this embodiment, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] To address the technical problems of poor cleaning accuracy, low cleaning efficiency, and high labor costs associated with the manual or semi-automatic cleaning of battery cell shoulders in current battery module production processes, this invention proposes a full-plate battery cell shoulder plasma cleaning device. This device enables fully automatic cleaning of the shoulders of large-area water-cooled modules, improving the efficiency and automation of battery cell shoulder cleaning and meeting the needs of modern automated production.

[0028] refer to Figure 1 One embodiment of this utility model provides a plasma cleaning device for the shoulder of a fully press-fit battery cell, including a pressing assembly 1, a cleaning robot 2, and a control unit 3 electrically connecting the pressing assembly 1 and the cleaning robot 2. The "X-axis," "Y-axis," and "Z-axis" directions mentioned herein refer to... Figure 2 The X, Y, and Z directions are marked in the text.

[0029] Specifically, refer to Figures 1 to 3 The aforementioned pressing assembly 1 includes a main frame 11, a lifting mechanism 12 mounted on the main frame 11, a pressing mechanism 13 connected to the lifting mechanism 12, and a lifting and positioning mechanism 14 located below the pressing mechanism 13. When the AGV trolley 100, loaded with a battery tray 200, enters the cleaning station inside the main frame 11, the control unit 3 controls the lifting and positioning mechanism 14 to lift the battery tray 200 upwards. At the same time, the lifting mechanism 12 drives the pressing mechanism 13 to move downwards and press against the surface of the battery module 300, exposing the cell shoulder 400.

[0030] refer to Figure 1 and Figure 11The aforementioned cleaning robot 2 includes a robot host 21 located on the side of the main frame 11, and a cleaning head 22 connected to the robot host 21. The cleaning head 22 includes a plasma spray gun 221, a camera assembly 222, a suction port 223, and a laser rangefinder 224. The control unit 3 controls the laser rangefinder 224 to scan and measure the distance of the battery module 300 along the X-axis, and records the position trajectory of the cell shoulder 400 through the camera assembly 222. The plasma spray gun 221 performs plasma cleaning on each cell shoulder 400, while the suction port 223 removes dust from the cleaned area. The laser rangefinder 224 can determine the cleaning window by detecting the height difference between the pressure plate and the cell shoulder, and determine the cleaning trajectory by measuring the distance between the two ends of the pressure plate. A microswitch 225 is also provided on the cleaning head 22 to prevent accidental activation if the cleaning head 22 exceeds the cleaning position during plasma cleaning.

[0031] refer to Figure 2 , Figure 4 and Figure 5 The aforementioned lifting mechanism 12 includes a lifting frame 121 and a pressing cylinder 122 vertically disposed below the lifting frame 121. The main frame 11 includes four columns 111, and at least two sets of parallel linear guide rails 123 are vertically disposed on the columns 111. Preferably, four sets of linear guide rails 123 are disposed on the four columns 111 respectively. Sliding blocks 124 are fixedly connected to the four corners of the lifting frame 121, and the lifting frame 121 is slidably connected to the linear guide rails 123 through the sliding blocks 124. The pressing cylinder 122 is fixedly connected to the main frame 11, and the piston rod end of the pressing cylinder 122 is fixedly connected to the lifting frame 121. The pressing cylinder 122 drives the lifting frame 121 to move up and down along the linear guide rails 123 in the Z-axis direction.

[0032] refer to Figure 2 , Figure 4 and Figure 8 The aforementioned pressing mechanism 13 includes a pressing frame 131 connected to the lifting frame 121. Multiple sets of pressure plates 132 are spaced apart below the pressing frame 131. The length direction of the pressure plates 132 is consistent with the length direction of the pressing frame 131, and they are all arranged along the X-axis. Multiple support blocks 139 are fixed below the pressing frame 131, located above the pressure plates 132. These support blocks limit the distance between the pressure plates 132 and the pressing frame 131 and provide support when the pressure plates 132 press down on the battery module. A spring 133 connects the pressure plates 132 and the pressing frame 131. The pressure plates 132 are used to press against the surface of the battery module 300. The spring 133 acts as a buffer during the pressing process, accommodating product deviations, ensuring that no gaps are formed when pressing the battery cells, and preventing damage caused by excessive pressure from the pressure plates 132 on the battery module 300.

[0033] When the AGV trolley 100, loaded with the battery tray 200, enters the cleaning station inside the main frame 11, the pressing cylinder 122 drives the lifting frame 121 to move downward along the linear guide rail 123, causing the pressing frame 131 and the pressure plate 132 to press downward simultaneously onto the surface of the battery module 300; after cleaning, the pressing cylinder 122 drives the lifting frame 121 to lift upward, and the pressure plate 132 detaches from the battery module 300, leaving space for the AGV trolley 100 to leave the station.

[0034] refer to Figure 8 and Figure 9 The aforementioned pressure plate 132 includes a metal plate 1321, an insulating plate 1322, and a fireproof plate 1323. The metal plate 1321 is connected to the lower part of the pressing frame 131 via a connector 1324. The metal plate 1321 can be made of aluminum, ensuring the structural strength of the pressure plate 132 while reducing its weight. The insulating plate 1322, with adhesive backing, is sandwiched between the metal plate 1321 and the fireproof plate 1323, providing insulation and protection for the battery cell and preventing short circuits. The fireproof plate 1323, used for pressing against the battery module 300, is made of flame-retardant and high-temperature resistant material, serving to prevent fire and enhance safety performance.

[0035] refer to Figure 2 , Figure 4 , Figure 6 and Figure 7 The aforementioned pressing frame 131 has movable pressing mechanisms 134 connected to both ends along the X-axis. Each movable pressing mechanism 134 includes a servo motor assembly 1341 and a fine-tuning plate 1342 linked to the output of the servo motor assembly 1341. The servo motor assembly 1341 is fixed to the lifting frame 121, and the fine-tuning plate 1342 is fixedly connected to the end of the pressing frame 131. By driving the fine-tuning plate 1342 through the servo motor assembly 1341, the pressing frame 131 can be moved along the Y-axis, allowing for fine-tuning of the position of the pressing frame 131 in the horizontal direction. This precisely adjusts the pressing position between the pressing plate 132 and the battery module 300, accurately exposing the cell shoulder 400 for plasma cleaning.

[0036] refer to Figure 2 , Figure 4 , Figure 6 and Figure 7The pressing frame 131 has four sets of changing mechanisms 135 connected to both ends. Each changing mechanism 135 includes a changing cylinder 1351 horizontally arranged along the Y-axis and a changing cylinder 1352 vertically arranged along the Z-axis. The changing cylinder 1351 is fixed to a fine-tuning plate 1342. A limiting base 1353 is coaxially connected to the piston rod end of the changing cylinder 1351. The limiting base 1353 is slidably connected to the fine-tuning plate 1342. The piston rods of the two changing cylinders 1351 located at the same end of the pressing frame 131 move in opposite directions. End plates 136 are fixed to both ends of the pressing frame 131. Locking brackets 1354 are fixed to the end plates 136, and the changing cylinder 1352 is fixedly connected to the locking brackets 1354. The piston rod end of the second cylinder 1352 is coaxially connected to an insert block 1355. The limiting base 1353 has an opening slot 1356 that engages with the insert block 1355, and the opening slot 1356 and the insert block 1355 are shaped to match. The buckle 1354 has a pressure roller 1357 inside, and the end of the limiting base 1353 extends into the buckle 1354 and abuts against the pressure roller 1357.

[0037] Because the cell arrangement and size of different battery module models are different, the position of the cell shoulder is naturally different, and the corresponding pressure plate structure is also different. When it is necessary to change the shape of the pressing mechanism 13, the changing cylinder 1352 drives the insert block 1355 to move upward along the Z-axis, the insert block 1355 disengages from the opening slot 1356, and the changing cylinder 1351 drives the limiting base 1353 to retract backward along the Y-axis and disengage from the pressure roller 1357, so that the pressing frame 131 can be disengaged from the lifting frame 121.

[0038] refer to Figures 8 to 10 The pressing frame 131 is along the width direction, i.e. Figure 2 Multiple support blocks 139 are fixed below both ends of the X-axis. The support blocks 139 are located outside the spring 133 and the pressure plate 132, and are on different vertical mounting planes from the spring 133 and the pressure plate 132. After the pressing frame 131 is changed, the removed pressing frame 131 abuts against the support seat 502 on the top of the changing bracket 501 fixed on the changing trolley 500 through the support blocks 139, thereby avoiding damage to the spring 133 and the pressure plate 132 during the changing transportation process. The changing trolley 500 is used to transport the removed pressing frame 131 out of the station. At the same time, another changing trolley 500 carrying the required model of pressing frame 131 enters the workstation. The position of the lifting frame 121 is adjusted by the lifting mechanism 12 so that it abuts against the new pressing frame 131. Then, through the coordinated action of the moving pressing mechanism 134 and the changing mechanism 135, the pressing frame 131 and the lifting frame 121 are locked and fixed, thereby completing the changing.

[0039] refer to Figure 4 and Figure 7Four sets of swing cylinders 137 are fixed on the aforementioned lifting frame 121. Each end plate 136 has a set of swing cylinders 137 at both ends. The piston rod end of the swing cylinder 137 is connected to a swing rod 138, and the bottom end of the swing rod 138 abuts against the upper surface of the end plate 136. The swing cylinders 137 at the four corners drive the swing rods 138 to abut against the pressing frame 131, thereby ensuring that the pressure plate 132 on the pressing frame 131 remains horizontal, thus enabling precise and stable pressing onto the surface of the battery module 300.

[0040] refer to Figure 2 and Figure 12 The aforementioned lifting and positioning mechanism 14 includes a lifting base 141 located below the main frame 11, a lifting bracket 142 vertically slidably connected to the lifting base 141, and a lifting cylinder 143 horizontally fixed within the lifting base 141. A wedge block 144 is connected to the piston rod end of the lifting cylinder 143, and the wedge block 144 is horizontally slidably connected to the lifting base 141. A lifting wheel 145, abutting against the wedge block 144, is provided at the bottom of the lifting bracket 142. A vertically mounted guide rail 149 is provided on the lifting base 141, and the lifting bracket 142 is slidably connected to the lifting base 141 via the guide rail 149.

[0041] refer to Figure 2 and Figure 12 The lifting base 141 is further provided with clamping mechanisms 146 at both ends. The clamping mechanism 146 includes a clamping cylinder 147 fixed to the lifting base 141, and a clamping block 148 is connected to the piston rod end of the clamping cylinder 147. The clamping cylinder 147 on the opposite side of the lifting base 141 drives the clamping block 148 to extend inward in a horizontally opposite direction to limit the AGV trolley, ensuring that the AGV trolley stops at the lifting position during the plasma cleaning process, and preventing the lifting and lowering position of the battery tray 200 from shifting.

[0042] The lifting cylinder 143 drives the wedge block 144 to slide horizontally relative to the lifting base 141, and the lifting wheel 145 moves relative to the wedge surface of the wedge block 144, thereby driving the lifting wheel 145 to move the lifting bracket 142 to achieve lifting and lowering. When the AGV trolley 100 carrying the battery module 300 enters the lifting station inside the main frame 11, the lifting cylinder 143 drives the lifting bracket 142 to move upward through the wedge block 144 and the lifting wheel 145, lifting the battery tray 200 on the AGV trolley 100 upward and detaching it from the trolley. In conjunction with the pressing mechanism 12 above, the battery module 300 is pressed and limited, exposing the battery cell shoulder 400. The cleaning robot 2 then cleans each battery module individually. After cleaning, the lifting cylinder 143 drives the lifting bracket 142 to move downward, placing the battery tray 200 on the AGV trolley and transporting it out of the workstation.

[0043] To improve safety performance, refer to Figure 4 and Figure 5 The column 111 is equipped with a fall protection mechanism 15, with at least two sets of the fall protection mechanism 15 located diagonally opposite each other on both sides of the column 111. The fall protection mechanism 15 includes a fall protection cylinder 151, and the piston rod end of the fall protection cylinder 151 is connected to a fall protection pin 152. A connecting plate 125 is fixed between the lifting frame 121 and the slider seat 124, and the connecting plate 125 has a fall protection insertion hole 1251 that matches the fall protection pin 152. When the pressing cylinder 122 drives the lifting frame 121 to rise to a specified height, the fall protection cylinder 151 drives the fall protection pin 152 to extend into the fall protection insertion hole 1251 for locking and limiting, preventing the lifting frame 121 from falling unexpectedly due to power failure or gas failure. The main frame 11 is also equipped with a maintenance scapegoat, that is, a locking rod 16 is inserted into the column 111, and the column 111 has an insertion hole corresponding to the position of the fall protection insertion hole 1251. During maintenance, the locking rod 16 can be inserted into the holes of the fall arrestor 1251 and the column 111 for manual position locking to prevent the elevator frame 121 from falling unexpectedly due to the failure of the fall arrestor mechanism 15.

[0044] refer to Figure 1 The control unit 3 includes an integrated electrical cabinet 31, a robot control cabinet 32, a plasma cleaning control cabinet 33, and a dust removal control cabinet 34. The integrated electrical cabinet 3 connects to the back-end MES system and controls the electrical components in the entire cleaning unit station to operate in conjunction. The robot control cabinet 32 ​​connects to and controls the operation of the cleaning robot 2. The plasma cleaning control cabinet 33 connects to and controls the plasma spray gun 221 to clean the shoulder 400 of the battery cell. The dust removal control cabinet 34 is connected to the dust suction port 223 through a pipeline to remove dust during the cleaning process. The dust removal control cabinet 34 and the dust suction port 223 are connected by a cantilever 35 to suspend and support the dust removal pipeline.

[0045] refer to Figure 1 The pressing assembly 1 of this utility model is surrounded by a grating fence 4, and the grating fence 4 has a passage 41 for the AGV trolley 100 to enter and exit. The grating fence 4 has a muting function, which is used to monitor the intrusion of personnel or objects in the dangerous area around the equipment. It realizes safety interlock protection through real-time detection by infrared beam. When a hand or object blocks any beam, the system immediately triggers an emergency stop signal and cuts off the power source of the equipment.

[0046] Although the preferred embodiments of this utility model have been disclosed above, they are not intended to limit this utility model. Any person skilled in the art can make possible changes and modifications to the technical solutions of this utility model by utilizing the methods and techniques disclosed above without departing from the spirit and scope of this utility model. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solutions of this utility model shall fall within the protection scope of the technical solutions of this utility model.

Claims

1. A plasma cleaning device for the shoulder of a full-plate battery cell, characterized in that, Includes a pressing assembly (1), a cleaning robot (2), and a control unit (3) that electrically connects the pressing assembly (1) and the cleaning robot (2); The pressing assembly (1) includes a main frame (11), a lifting mechanism (12) provided on the main frame (11), a pressing mechanism (13) connected to the lifting mechanism (12), and a lifting and positioning mechanism (14) provided below the pressing mechanism (13). When the AGV trolley (100) loads the battery tray (200) and enters the cleaning station inside the main frame (11), the control unit (3) controls the lifting and positioning mechanism (14) to lift the battery tray (200) upward, while the lifting mechanism (12) drives the pressing mechanism (13) to move downward and press it onto the surface of the battery module (300) and expose the battery cell shoulder (400). The cleaning robot (2) includes a robot host (21) located on the side of the main frame (11) and a cleaning head (22) connected to the robot host (21). The cleaning head (22) includes a plasma spray gun (221), a camera assembly (222) and a laser rangefinder (224). The control unit (3) controls the laser rangefinder (224) to scan and measure the distance of the battery module (300), and records the position trajectory of the battery cell shoulder (400) through the camera assembly (222). The plasma spray gun (221) performs plasma cleaning on the battery cell shoulder (400) one by one.

2. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 1, characterized in that, The lifting mechanism (12) includes a lifting frame (121) and a pressing cylinder (122) vertically disposed below the lifting frame (121). The main frame (11) includes a vertically disposed column (111) with a linear guide rail (123) vertically disposed on the column (111). The lifting frame (121) is slidably connected to the linear guide rail (123) through a slider seat (124). The piston rod end of the pressing cylinder (122) is fixedly connected to the lifting frame (121). The pressing cylinder (122) drives the lifting frame (121) to move up and down along the linear guide rail (123).

3. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 2, characterized in that, The pressing mechanism (13) includes a pressing frame (131) connected to the lifting frame (121). Multiple sets of pressure plates (132) are spaced apart below the pressing frame (131), and springs (133) are connected between the pressure plates (132) and the pressing frame (131).

4. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 3, characterized in that, The pressure plate (132) includes a metal plate (1321), an insulating plate (1322), and a fireproof plate (1323). The metal plate (1321) is connected to the bottom of the pressing frame (131) through a connector (1324). The insulating plate (1322) is sandwiched between the metal plate (1321) and the fireproof plate (1323). The fireproof plate (1323) is used to press and abut against the battery module (300).

5. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 3, characterized in that, The pressing frame (131) is connected to a movable pressing mechanism (134) at both ends. The movable pressing mechanism (134) includes a servo motor group (1341) and a fine-tuning plate (1342) that is linked to the output end of the servo motor group (1341). The servo motor group (1341) is fixed on the lifting frame (121), and the fine-tuning plate (1342) is fixedly connected to the end of the pressing frame (131).

6. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 5, characterized in that, The pressing frame (131) is connected to two ends by a changing mechanism (135), which includes a horizontally arranged changing cylinder one (1351) and a vertically arranged changing cylinder two (1352). The first type change cylinder (1351) is fixed on the fine adjustment plate (1342). The piston rod end of the first type change cylinder (1351) is coaxially connected to the limit base (1353). The limit base (1353) is slidably connected to the fine adjustment plate (1342). The pressing frame (131) has end plates (136) fixed at both ends, and a locking frame (1354) fixed on the end plates (136). The second changing cylinder (1352) is fixedly connected to the locking frame (1354). The piston rod end of the second changing cylinder (1352) is coaxially connected to the insert block (1355). The limiting base (1353) has an opening slot (1356) that is inserted into the insert block (1355). The locking frame (1354) has a pressure roller (1357) inside. The end of the limiting base (1353) extends into the locking frame (1354) and abuts against the pressure roller (1357). The pressing frame (131) has multiple support blocks (139) fixed below both ends along the width direction. The support blocks (139) are located outside the spring (133) and the pressure plate (132).

7. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 6, characterized in that, Four sets of swing cylinders (137) are fixed on the lifting frame (121). Each end plate (136) has a set of swing cylinders (137) at both ends. The piston rod end of the swing cylinder (137) is connected to a swing rod (138), and the bottom end of the swing rod (138) abuts against the upper surface of the end plate (136).

8. The full-pressing plate cell shoulder plasma cleaning device according to claim 1, characterized in that, The lifting and positioning mechanism (14) includes a lifting base (141) located below the main frame (11), a lifting bracket (142) vertically slidably connected to the lifting base (141), and a lifting cylinder (143) horizontally fixed inside the lifting base (141). The piston rod end of the lifting cylinder (143) is connected to a wedge block (144), and the wedge block (144) is horizontally slidably connected to the lifting base (141). The bottom of the lifting bracket (142) is provided with a lifting wheel (145) that abuts against the wedge block (144).

9. The plasma cleaning device for the shoulder of a full-plate battery cell according to claim 2, characterized in that, The column (111) is provided with a fall protection mechanism (15), which includes a fall protection cylinder (151). The piston rod end of the fall protection cylinder (151) is connected to a fall protection pin (152). A connecting plate (125) is fixed between the lifting frame (121) and the slider seat (124). A fall protection hole (1251) matching the fall protection pin (152) is opened on the connecting plate (125).

10. The plasma cleaning apparatus for the shoulder of a full-plate battery cell according to claim 1, characterized in that, The control unit (3) includes an integrated electrical cabinet (31), a robot control cabinet (32), a plasma cleaning control cabinet (33), and a dust removal control cabinet (34); the cleaning head (22) is provided with a dust suction port (223) connected to the dust removal control cabinet (34); the pressing assembly (1) is surrounded by a grating fence (4), and the grating fence (4) is provided with a passageway (41) for the AGV trolley (100) to enter and exit.

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