Battery cell top cover press-fitting device and welding equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery cell top cover press-fitting device and welding equipment, a battery cell is provided with a first end and a second end which are oppositely arranged, the device comprises a conveying mechanism, a limiting mechanism and a press-fitting mechanism, and the conveying mechanism is used for conveying the battery cell in the first direction; the at least one limiting mechanism is arranged on one side of the conveying mechanism and is used for being close to or away from the first ends of the battery cells in the second direction to abut against or be separated from the first ends of the battery cells, and the second direction is perpendicular to the first direction; and the at least one press-fitting mechanism is arranged on the other side of the conveying mechanism, is opposite to the limiting mechanism, and is used for being close to or far away from the second end of the battery cell in the second direction so as to abut against or be separated from the second end of the battery cell. The device can be used for carrying out online press fitting on the battery cell on the conveying mechanism, a complex jig circulation mechanism is not needed, the length and the width of press fitting equipment are effectively shortened, and the machinability, the transportability and the production efficiency of the press fitting equipment are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cell top cover press-fitting device and welding equipment. Background Art

[0002] With the rapid development of the new energy vehicle market, the most critical part of electric vehicles is the power battery. The demand for power batteries is increasing, and battery technology is also constantly improving. Therefore, new power production equipment is needed to meet market demand. Power batteries are generally composed of battery modules, which include many batteries. A battery contains a cell. In order to meet the discharge capacity of the cell, the cell has its own positive and negative pole ears and positive and negative pole top covers, which are distributed at both ends of the cell. During the processing and assembly of the cell, the ears need to be bent, and the top cover and aluminum shell need to be pressed and welded. Finally, the cell that passes the inspection flows into the next section through the logistics line.

[0003] At present, due to the limitations of the existing blade lithium battery positive and negative electrode top cover pressing equipment, which mainly uses a hollow rotating platform fixture to stack multiple workstations, the pressing equipment has a complex structure, the overall size of the machine is too long, the floor space is large, the processing and transportation are difficult, the maintenance is inconvenient, the efficiency is low, and the cost is high. Utility Model Content

[0004] The present application provides a battery cell top cover press-fitting device and welding equipment, which are used to solve the problems of complex equipment structure and large volume size in the prior art.

[0005] In one aspect, the present application provides a battery cell top cover press-fitting device, wherein the battery cell has a first end and a second end disposed opposite to each other, and the device comprises:

[0006] A conveying mechanism, used for conveying the battery cell along a first direction;

[0007] a limiting mechanism, at least one, disposed on one side of the conveying mechanism, for approaching or moving away from the first end of the battery cell along a second direction to abut against or separate from the first end of the battery cell, the second direction being perpendicular to the first direction;

[0008] At least one pressing mechanism is arranged on the other side of the conveying mechanism and is arranged opposite to the limiting mechanism, and is used to approach or move away from the second end of the battery cell along the second direction and abut against or separate from the second end of the battery cell.

[0009] In one possible design, the press-fit mechanism includes:

[0010] A movable seat, the movable seat being capable of approaching or moving away from the second end of the battery cell along a second direction;

[0011] A positioning component is arranged on a side of the movable seat close to the battery cell, and the positioning component can abut against or separate from the side of the battery cell to adjust the position of the battery cell;

[0012] The end pressing assembly is arranged on a side of the movable seat away from the battery cell and can move along the second direction to abut against or separate from the second end of the battery cell.

[0013] In a possible design, the positioning assembly includes a first limit block, a second limit block, a third limit block and a fourth limit block slidably disposed on the moving seat;

[0014] The first limit block and the second limit block are arranged opposite to each other, and the first limit block and the second limit block can move toward each other or move away from each other along a third direction to abut against or separate from opposite sides of the battery cell, and the third direction is parallel to the body width direction of the battery cell;

[0015] The third limit block and the fourth limit block are arranged opposite to each other. The third limit block and the fourth limit block can move toward or away from each other along a fourth direction to abut or separate from opposite sides of the battery cell. The fourth direction is parallel to the thickness direction of the battery cell.

[0016] In a possible design, the positioning component further includes:

[0017] A first stopper is arranged at positions on the movable seat corresponding to opposite ends of the third limiter;

[0018] A first buffer is installed on the first stopper or the third stopper, and can gradually decelerate the third stopper to a stop by contacting the third stopper or the first stopper;

[0019] The second stopper is arranged at the positions of the movable seat at two opposite ends corresponding to the fourth limiter;

[0020] The second buffer is installed on the second stopper or the fourth limit block, and can gradually decelerate the fourth limit block to stop by contacting the fourth limit block or the second stopper.

[0021] In one possible design, the terminal pressure assembly includes:

[0022] An end pressure seat is slidably disposed on the movable seat and is capable of moving along a second direction;

[0023] The pressing piece is arranged on the end pressing seat and can abut against or separate from the second end of the battery cell by moving the end pressing seat along the second direction.

[0024] In a possible design, the end pressure assembly also includes a pressure sensor, and the pressure sensor is arranged on the end pressure seat.

[0025] In a possible design, the limiting mechanism includes:

[0026] Base;

[0027] A first moving block is slidably disposed on the base, has a first inclined surface, and can move along a first direction;

[0028] The second moving block is slidably arranged on the base, and a second inclined surface is arranged at one end close to the first moving block, and the second inclined surface contacts the first inclined surface. The second inclined surface can slide along the first inclined surface when the first moving block moves along the first direction, thereby causing the second moving block to move along the second direction, so that an end of the second moving block away from the first moving block abuts against or separates from the first end of the battery cell.

[0029] In a possible design, the limiting mechanism further includes:

[0030] A third stopper is disposed on the base and is used to stop the first moving block from continuing to move when the first moving block moves to the position of the third stopper;

[0031] The third buffer is arranged on the third stopper and can gradually decelerate the first moving block to stop by contacting with the first moving block.

[0032] In a possible design, the conveying mechanism includes a magnetic levitation stator, a magnetic levitation mover and a tray. The tray is arranged on the magnetic levitation mover. The tray is used to place the battery cells. The first direction is the conveying direction of the magnetic levitation stator.

[0033] On the other hand, the present application also provides a battery cell top cover welding device, including the battery cell top cover pressing device as described above.

[0034] The beneficial effects of this application are as follows:

[0035] The battery cell top cover press-fitting device of the present application is provided with at least one limiting mechanism and a press-fitting mechanism on opposite sides of the conveying mechanism, and the limiting mechanism and the press-fitting mechanism are arranged opposite to each other, the limiting mechanism abuts against or separates from the first end of the battery cell by approaching or moving away from the first end of the battery cell along the second direction, and the press-fitting mechanism abuts against or separates from the second end of the battery cell by approaching or moving away from the second end of the battery cell along the second direction. When the limiting mechanism and the press-fitting mechanism abut against the first end and the second end of the battery cell respectively, the battery cell on the conveying mechanism can be press-fitted online without the need for a complex jig circulation mechanism, effectively shortening the length and width of the press-fitting equipment and improving its processability and transportability. When the press-fitting is completed, the limiting mechanism and the press-fitting mechanism are separated from the first end and the second end of the battery cell respectively, and the battery cell after the press-fitting is transported to the next production station by the conveying mechanism. The equipment is simple and the layout is reasonable. The theoretical production capacity of the device is 33PPM, which is doubled compared to the original capacity.

[0036] The battery cell top cover welding equipment provided in the present application includes the battery cell top cover pressing device in the present application, and therefore also includes all the above-mentioned advantages of the battery cell top cover pressing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A schematic structural diagram of a cell top cover press-fitting device provided in one embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of a conveying mechanism of a cell top cover press-fitting device provided in one embodiment of the present application;

[0040] Figure 3 A schematic structural diagram of a limiting mechanism of a cell top cover press-fitting device provided in one embodiment of the present application;

[0041] Figure 4 A structural schematic diagram of a pressing mechanism of a cell top cover pressing device provided by an embodiment of the present application from one perspective;

[0042] Figure 5 A schematic structural diagram of a pressing mechanism of a cell top cover pressing device provided by an embodiment of the present application from another perspective;

[0043] Reference numerals:

[0044] 100-transport mechanism, 110-magnetic suspension stator, 120-magnetic suspension mover, 130-tray;

[0045] 200-limiting mechanism, 210-base, 220-first moving block, 221-first inclined surface, 230-second moving block, 231-second inclined surface, 240-third stopper, 250-third buffer, 260-fourth driver;

[0046] 300-pressing mechanism, 310-moving seat, 311-bottom plate, 312-vertical plate, 313-side support, 314-horizontal plate; 320-positioning assembly, 321-first limit block, 322-second limit block, 323-third limit block, 324-fourth limit block, 325-first stop block, 326-first buffer, 327-second stop block, 328-second buffer, 329-first driver, 3210-second driver; 330-end pressing assembly, 331-end pressing seat, 332-pressing member, 333-pressure sensor, 334-third driver;

[0047] 400 - battery cell, 410 - first end, 420 - second end. DETAILED DESCRIPTION

[0048] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0049] During the production and assembly of batteries, the wrapped bare cells need to be loaded into the shell, and then the cell top cover needs to be pressed into the shell so that the top of the top cover is flush with the top of the shell. However, due to the limitations of the structure of the existing cell pressing device, the pressing equipment has a complex structure, the overall size is too long, and the floor space is large.

[0050] To solve the above problems, the following Figure 1-Figure 5 , describes the battery cell top cover press-fitting device provided in an embodiment of the present application. Among them, the battery cell 400 has a first end 410 and a second end 420 arranged opposite to each other. The device includes a conveying mechanism 100, a limiting mechanism 200 and a press-fitting mechanism 300. The conveying mechanism 100 is used to convey the battery cell 400 along a first direction. There is at least one limiting mechanism 200, and the limiting mechanism 200 is arranged on one side of the conveying mechanism 100. The limiting mechanism 200 is used to approach or move away from the first end 410 of the battery cell along a second direction and abut against or separate from the first end 410 of the battery cell. The second direction is perpendicular to the first direction. There is at least one press-fitting mechanism 300, and the press-fitting mechanism 300 is arranged on the other side of the conveying mechanism 100. The press-fitting mechanism 300 is arranged opposite to the limiting mechanism 200. The press-fitting mechanism 300 is used to approach or move away from the second end 420 of the battery cell along the second direction and abut against or separate from the second end 420 of the battery cell.

[0051] The conveying mechanism 100 is a component for conveying the battery cell. In some embodiments, the conveying mechanism 100 adopts a magnetic levitation conveying mechanism 100. In other embodiments, the conveying mechanism 100 adopts a conveyor belt structure. In yet other embodiments, the conveying mechanism 100 adopts a manipulator structure. Among them, the first direction is the conveying direction of the conveying mechanism 100. In some embodiments, the body length direction of the battery cell conveyed by the conveying mechanism 100 is perpendicular to the first direction, that is, the second direction is consistent with the body length direction of the battery cell, the first end 410 of the battery cell is located on the right side of the conveying mechanism 100, and the second end 420 of the battery cell is located on the left side of the conveying mechanism 100.

[0052] The limiting mechanism 200 is a component for limiting the first end 410 of the battery cell. In some embodiments, the limiting mechanism 200 is disposed on the right side of the conveying mechanism 100, opposite to the first end 410 of the battery cell. When the battery cell is press-fitted, the limiting mechanism 200 limits the battery cell by abutting against the first end 410 of the battery cell, and can prevent the conveying mechanism 100 from being damaged during the press-fitting process.

[0053] The pressing mechanism 300 is a component for applying end pressure to the second end 420 of the battery cell. In some embodiments, the pressing mechanism 300 is disposed on the left side of the conveying mechanism 100, opposite to the second end 420 of the battery cell, and presses the top cover of the battery cell onto the outer shell of the battery cell by applying pressure to the second end 420 of the battery cell, so as to facilitate subsequent welding operations of the top cover and the outer shell of the battery cell.

[0054] By utilizing the technical solution of the above-mentioned embodiment of the present application, at least one limiting mechanism 200 and a pressing mechanism 300 are respectively arranged on opposite sides of the conveying mechanism 100, and the limiting mechanism 200 and the pressing mechanism 300 are arranged opposite to each other, the limiting mechanism 200 abuts against or separates from the first end 410 of the battery cell by approaching or moving away from the first end 410 of the battery cell along the second direction, and the pressing mechanism 300 abuts against or separates from the second end 420 of the battery cell by approaching or moving away from the second end 420 of the battery cell along the second direction. When the limiting mechanism 200 and the pressing mechanism 300 abut against or separate from the second end 420 of the battery cell respectively, the battery cell on the conveying mechanism 100 can be pressed online without the need for a complex jig circulation mechanism, which effectively shortens the length and width of the pressing equipment and improves its processability and transportability. After the press-fitting is completed, the limiting mechanism 200 and the press-fitting mechanism 300 are separated from the first end 410 and the second end 420 of the battery cell respectively, and the battery cell after the press-fitting is transported to the next production station by the transport mechanism 100. The equipment is simple and the layout is reasonable. The theoretical production capacity of this device is 33PPM, which is doubled than the original capacity.

[0055] Reference Figure 1 , Figure 4 , Figure 5 As shown, in some embodiments of the present application, the pressing mechanism 300 includes a movable seat 310, a positioning assembly 320 and a terminal pressing assembly 330. The movable seat 310 can be close to or away from the second end 420 of the battery cell along the second direction. The positioning assembly 320 is arranged on a side of the movable seat 310 close to the battery cell, and the positioning assembly 320 can abut against or separate from the side of the battery cell to adjust the position of the battery cell. The terminal pressing assembly 330 is arranged on a side of the movable seat 310 away from the battery cell, and can move along the second direction to abut against or separate from the second end 420 of the battery cell.

[0056] The mobile seat 310 is a component that carries the positioning assembly 320 and the end pressure assembly 330. In some embodiments, the mobile seat 310 includes a bottom plate 311, a vertical plate 312, a side support 313 and a horizontal plate 314, and the bottom plate 311 is arranged horizontally. The vertical plate 312 is perpendicular to the bottom plate 311 and fixed to the front side of the bottom plate 311 by screws. The two side supports 313 are respectively perpendicular to the bottom plate 311 and fixed to the left and right sides of the bottom plate 311 by screws. The side supports 313 are right-angled triangle structures, one right-angle side of the side support 313 is connected and fixed to the bottom plate 311 by screws, and the other right-angle side of the side support 313 is connected and fixed to the vertical plate 312 by screws. The left and right sides of the horizontal plate 314 are respectively connected vertically to the inner sides of the two side supports 313 by screws. Among them, holes are opened on the bottom plate 311, the vertical plate 312, the side support 313 and the horizontal plate 314 to meet the functional needs and reduce the weight of the mobile seat 310. In some embodiments, the bottom plate 311 is mounted on a linear module, and the linear module drives the movable seat 310 to move along the second direction to approach or move away from the battery cell. In other embodiments, the bottom plate 311 can also be mounted on a guide rail, and the guide rail extends along the second direction, and the bottom plate 311 is driven by a motor or a cylinder or a hydraulic cylinder to move along the second direction to approach or move away from the battery cell.

[0057] In some embodiments, the positioning assembly 320 is installed on the side of the vertical plate 312 close to the battery cell. The positioning assembly 320 can locate the relative position of the battery cell on the vertical plate 312 by abutting against the upper side, lower side, left side and right side of the battery cell. The end pressure assembly 330 is installed on the side of the movable seat 310 away from the battery cell. Correspondingly, a through hole is provided on the vertical plate 312 at the position corresponding to the second end 420 of the battery cell, so that the end pressure assembly 330 abuts against the second end 420 of the battery cell to apply end pressure to the second end 420 of the battery cell, so that the top cover of the battery cell is pressed onto the shell.

[0058] By utilizing the technical solution provided in the above embodiment, a positioning assembly 320 and an end pressure assembly 330 are arranged on the movable seat 310, and the positioning assembly 320 is used to press against the upper side, lower side, left side and right side of the battery cell to position the relative position of the battery cell on the vertical plate 312 so that the battery cell is centered, so that the end pressure assembly 330 can accurately apply end pressure along the second direction to each pressing point of the top cover.

[0059] Reference Figure 1 , Figure 4 , Figure 5As shown, in some embodiments of the present application, the positioning assembly 320 includes a first limit block 321, a second limit block 322, a third limit block 323 and a fourth limit block 324 slidably disposed on the movable seat 310. The first limit block 321 is disposed opposite to the second limit block 322, and the first limit block 321 and the second limit block 322 can move toward or away from each other along a third direction to abut against or separate from the opposite sides of the battery cell, and the third direction is parallel to the body width direction of the battery cell. The third limit block 323 and the fourth limit block 324 are disposed opposite to each other, and the third limit block 323 and the fourth limit block 324 can move toward or away from each other along a fourth direction to abut against or separate from the opposite sides of the battery cell, and the fourth direction is parallel to the body thickness direction of the battery cell. In some embodiments, the first limit block 321, the second limit block 322, the third limit block 323 and the fourth limit block 324 are all installed on the vertical plate 312 through the guide rail slider mechanism. Specifically, the first limit block 321 is installed on the left side of the vertical plate 312, the second limit block 322 is installed on the right side of the vertical plate 312, the third limit block 323 is installed on the upper side of the vertical plate 312, and the fourth limit block 324 is installed on the lower side of the vertical plate 312. The left side, right side, upper side and lower side of the second end 420 of the battery cell correspond to the first limit block 321 and the second limit block 322, respectively. The first limit block 321 and the second limit block 322 are connected to the corresponding first driver 329, respectively. The third limit block 323 and the fourth limit block 324 are connected to the corresponding second driver 3210, respectively. The first driver 329 and the second driver 3210 can be motors, cylinders or hydraulic cylinders. Driven by the first driver 329, the first limit block 321 and the second limit block 322 move horizontally toward each other on the guide rail sliding mechanism, so that they respectively abut against the left side and right side of the second end 420 of the battery cell. Driven by the second driver 3210, the third limit block 323 and the fourth limit block 324 move vertically toward each other on the guide rail sliding mechanism, so that they respectively abut against the upper side and lower side of the second end 420 of the battery cell, so as to complete the precise positioning of the battery cell.

[0060] By utilizing the technical solution provided in the above-mentioned embodiment of the present application, the battery cell can be precisely positioned by moving the first limit block 321 and the second limit block 322 toward each other, and the third limit block 323 and the fourth limit block 324 toward each other.

[0061] Reference Figure 1 , Figure 4 , Figure 5As shown, in some embodiments of the present application, the positioning assembly 320 further includes a first stopper 325, a first buffer 326, a second stopper 327, and a second buffer 328. The first stopper 325 is disposed on the movable seat 310 at positions corresponding to opposite ends of the third limit block 323. The first buffer 326 is mounted on the first stopper 325 or the third limit block 323, and can gradually decelerate the third limit block 323 to a stop by contacting the third limit block 323 or the first stopper 325. The second stopper 327 is disposed on the movable seat 310 at positions corresponding to opposite ends of the fourth limit block 324. The second buffer 328 is mounted on the second stopper 327 or the fourth limit block 324, and can gradually decelerate the fourth limit block 324 to a stop by contacting the fourth limit block 324 or the second stopper 327. In some embodiments, the first stop block 325 is installed on the vertical plate 312. There are two first stop blocks 325, which are respectively installed on the left and right ends of the third limit block 323. The first buffer component 326 is installed on the third limit block 323 at a position corresponding to the first stop block 325. The first buffer component 326 is a hydraulic buffer component. During the movement of the third limit block 323, the first buffer component 326 gradually approaches the first stop block 325. The first buffer component 326 can gradually slow down the third limit block 323 to stop at the position of the first stop block 325 by contacting the first stop block 325. Similarly, the second stopper 327 is mounted on the vertical plate 312. There are two second stoppers 327, which are respectively mounted on the left and right ends of the fourth limit block 324. The second buffer 328 is mounted on the fourth limit block 324 at a position corresponding to the second stopper 327. The second buffer 328 is a hydraulic buffer. During the movement of the fourth limit block 324, the second buffer 328 gradually approaches the second stopper 327. The second buffer 328 can gradually decelerate the fourth limit block 324 to the position where it stops at the second stopper 327 by contacting the second stopper 327. In other embodiments, the first buffer 326 is mounted on the first stopper 325. During the movement of the third limit block 323, the first buffer 326 gradually approaches the third limit block 323. The first buffer 326 can gradually decelerate the third limit block 323 to the position where it stops at the first stopper 325 by contacting the third limit block 323. Similarly, the second buffer member 328 is installed on the second stop block 327. During the movement of the fourth limit block 324, the second buffer member 328 gradually approaches the fourth limit block 324. The second buffer member 328 can gradually slow down the fourth limit block 324 to stop at the position of the second stop block 327 by contacting the fourth limit block 324.

[0062] By utilizing the technical solution of the above-mentioned embodiment of the present application, by setting the first stop block 325, the first buffer member 326, the second stop block 327 and the second buffer member 328, the first limit block 321, the second limit block 322, the third limit block 323 and the fourth limit block 324 can slowly press against the side of the battery cell to protect the battery cell and achieve precise positioning of the battery cell.

[0063] Reference Figure 1 , Figure 4 , Figure 5 As shown, in some embodiments of the present application, the end pressure assembly 330 includes an end pressure seat 331 and a pressure piece 332, and the end pressure seat 331 is slidably arranged on the movable seat 310 and can move in the second direction. The pressure piece 332 is arranged on the end pressure seat 331, and can be abutted against or separated from the second end 420 of the battery cell by the end pressure seat 331 moving in the second direction. In some embodiments, the end pressure seat 331 is installed on the cross plate 314 through a guide rail slider mechanism, and the end pressure seat 331 moves in the second direction on the guide rail slider mechanism under the drive of the third driver 334, and the third driver 334 can be a motor or a cylinder or a hydraulic cylinder, etc. In some embodiments, the end pressure seat 331 includes a horizontal pressure plate and a vertical pressure plate, the rear side of the horizontal pressure plate is connected to the driver, and the front side of the horizontal pressure plate is vertically integrated or welded with the vertical pressure plate. The pressure piece 332 is vertically penetrated on the vertical pressure plate. In some embodiments, the pressing piece 332 uses press-fit screws, and the position distribution and quantity of the press-fit screws are designed according to the press-fit points on the top cover of the battery cell. For example, three press-fit screws are vertically arranged on the vertical pressure plate, and the three press-fit screws correspond to the three press-fit points on the top cover of the battery cell respectively.

[0064] By using the technical solution of the above embodiment, the end pressing seat 331 and the pressing piece 332 are provided, and the pressing piece 332 is used to press the top cover of the battery cell to ensure that the pressing position is accurate.

[0065] Reference Figure 1 , Figure 4 , Figure 5 As shown, in some embodiments of the present application, the terminal pressing assembly 330 further includes a pressure sensor 333, and the pressure sensor 333 is disposed on the terminal pressing seat 331. The pressure sensor 333 is used to measure the pressure applied by the terminal pressing member 332 to the top cover of the battery cell, so that the terminal pressure can be monitored in real time to achieve precise press-fitting.

[0066] Reference Figure 1 , Figure 3As shown, in some embodiments of the present application, the limiting mechanism 200 includes a base 210, a first moving block 220 and a second moving block 230. The first moving block 220 is slidably disposed on the base 210, has a first inclined surface 221, and can move in a first direction. The second moving block 230 is slidably disposed on the base 210, and a second inclined surface 231 is disposed at one end close to the first moving block 220, and the second inclined surface 231 contacts the first inclined surface 221. The second inclined surface 231 can slide along the first inclined surface 221 when the first moving block 220 moves in the first direction, and thus the second moving block 230 moves in the second direction, so that the end of the second moving block 230 away from the first moving block 220 abuts against or separates from the first end 410 of the battery cell. In some embodiments, the first moving block 220 and the second moving block 230 are respectively installed on the base 210 through a guide rail slider structure. Under the drive of the fourth driver 260, the first moving block 220 can move along the first direction. The fourth driver 260 can be a motor, a cylinder, or a hydraulic cylinder. The first moving block 220 and the second moving block 230 are both wedge-shaped blocks. The ends of the first moving block 220 and the second moving block 230 that are close to each other are the first inclined surface 221 and the second inclined surface 231. Under the drive of the fourth driver 260, the first moving block 220 can move along the first direction. Since the first inclined surface 221 has a slope, the second inclined surface 231 slides along the first inclined surface 221, so that the other end of the second moving block 230 moves along the first direction or approaches to the battery cell or moves away from the battery cell.

[0067] By utilizing the technical solution of the above embodiment, by setting the first moving block 220 and the second moving block 230, the rear end of the second moving block 230 always abuts against the first moving block 220 during the process of abutting the battery cell, thereby effectively improving the stability of the second moving block 230 abutting against the battery cell and preventing jitter.

[0068] Reference Figure 1 , Figure 3 As shown, in some embodiments of the present application, the limiting mechanism 200 further includes a third stopper 240 and a third buffer 250. The third stopper 240 is disposed on the base 210, and is used to block the first moving block 220 from continuing to move when the first moving block 220 moves to the position of the third stopper 240. The third buffer 250 is disposed on the third stopper 240, and can gradually decelerate the first moving block 220 to stop by contacting the first moving block 220. In some embodiments, the third stopper 240 is mounted on the base 210 opposite to the first moving block 220, and the first moving block 220 moves between the third stopper 240 and the fourth driver 260. The first buffer 326 is a hydraulic buffer, and in the process of the first moving block 220 gradually approaching the third stopper 240, the third buffer 250 first contacts the first moving block 220 to decelerate the first moving block 220 and then stops at the third stopper 240.

[0069] By utilizing the technical solution of the above embodiment, by setting the third stopper 240 and the third buffer member 250, the first movable block 220 can be slowly stopped, and then the second movable block 230 can slowly press against the first end 410 of the battery cell to protect the battery cell and limit the second end 420 of the battery cell.

[0070] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the conveying mechanism 100 includes a magnetic suspension stator 110, a magnetic suspension mover 120 and a tray 130. The tray 130 is disposed on the magnetic suspension mover 120. The tray 130 is used to place the battery cells. The first direction is the conveying direction of the magnetic suspension stator 110. The battery cells in the tray 130 are conveyed by the mutual magnetic force between the magnetic suspension stator 110 and the magnetic suspension mover 120, and the efficiency is high.

[0071] The general workflow of this application is:

[0072] Reference Figure 1-Figure 5 As shown, first, the magnetic levitation mover 120 drives the tray 130 to move along the first direction on the magnetic levitation stator 110 to realize loading, and each tray 130 carries a battery cell aluminum shell and a battery cell top cover. Three battery cells are loaded at the same time as a group. After the battery cells are loaded to the pressing station, the limiting mechanism 200 will position the second end 420 of the battery cell along the second direction to prevent damage to the magnetic levitation conveyor line during the pressing process. The fourth driver 260 drives the first moving block 220 to move along the first direction, so that the second moving block 230 moves along the second direction, and the positioning block at the other end of the second moving block 230 abuts against the second end 420 of the battery cell to complete the positioning.

[0073] The moving seat 310 moves along the second direction, and the two first drivers 329 drive the first limit block 321 and the second limit block 322 to move left and right, respectively. The two second drivers 3210 respectively move the third limit block 323 and the fourth limit block 324 up and down, respectively, to precisely position the battery cell. After the battery cell is positioned, the third driver 334 drives the end pressure seat 331 and the pressure piece 332 to move along the second direction, and the pressure piece 332 presses the aluminum shell and the top cover to complete the press fitting. Among them, the pressure sensor 333 monitors the press fitting pressure in real time.

[0074] After the press-fitting is completed, the movable seat 310 and the base 210 both move backward along the second direction and return to their original position.

[0075] This application has at least the following beneficial effects:

[0076] 1. The device of the present application is based on the battery cell processing technology and the convenience of loading and unloading the battery cells, magnetic levitation transportation, and online pressing, which shortens the length and width of the equipment, making its processability and transportability within a reasonable range.

[0077] 2. The device of the present application is different from the traditional multi-channel multiple grabbing, loading, pressing and unloading. The device has high integration, low cost, does not require a large and complex fixture circulation mechanism, has a simple structure, a more reasonable layout, and easy equipment maintenance.

[0078] 3. The theoretical production capacity of the device of this application is 33PPM, which is doubled than the original capacity.

[0079] 4. The device of the present application can be quickly changed and debugged by replacing the tray, and has a simple structure and a more reasonable layout.

[0080] An embodiment of the present application also provides a battery cell top cover welding device, including the battery cell top cover pressing device provided by any of the above embodiments.

[0081] It should be noted that the battery cell top cover welding equipment includes the battery cell top cover pressing device, which also includes all the advantages of the battery cell top cover pressing device mentioned above, which will not be repeated here.

[0082] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0083] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0084] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery cell top cover press-fitting device, characterized in that: The battery cell has a first end and a second end that are arranged opposite to each other, and the device comprises: A conveying mechanism, used for conveying the battery cell along a first direction; a limiting mechanism, at least one, disposed on one side of the conveying mechanism, for approaching or moving away from the first end of the battery cell along a second direction to abut against or separate from the first end of the battery cell, wherein the second direction is perpendicular to the first direction; At least one pressing mechanism is arranged on the other side of the conveying mechanism and is arranged opposite to the limiting mechanism, and is used to approach or move away from the second end of the battery cell along the second direction and abut against or separate from the second end of the battery cell.

2. The battery cell top cover press-fitting device according to claim 1, wherein the press-fitting mechanism comprises: A movable seat, wherein the movable seat can move closer to or farther away from the second end of the battery cell along the second direction; A positioning component, the positioning component is arranged on a side of the movable seat close to the battery cell, and the positioning component adjusts the position of the battery cell by abutting against or separating from the side of the battery cell; The end pressing assembly is arranged on a side of the movable seat away from the battery cell and can move along the second direction to abut against or separate from the second end of the battery cell.

3. The battery cell top cover press-fitting device according to claim 2, wherein the positioning assembly comprises a first limit block, a second limit block, a third limit block and a fourth limit block slidably disposed on the movable seat; The first limit block and the second limit block are arranged opposite to each other, and the first limit block and the second limit block can move toward each other or move away from each other along a third direction to abut against or separate from opposite sides of the battery cell, and the third direction is parallel to the body width direction of the battery cell; The third limit block is arranged opposite to the fourth limit block. The third limit block and the fourth limit block can move toward or away from each other along a fourth direction to abut or separate from the opposite sides of the battery cell. The fourth direction is parallel to the thickness direction of the battery cell.

4. The battery cell top cover press-fitting device according to claim 3, wherein the positioning assembly further comprises: A first stopper is arranged at positions on the movable seat corresponding to opposite ends of the third limit block; A first buffer is installed on the first stopper or the third stopper, and can gradually decelerate the third stopper to a stop by contacting the third stopper or the first stopper; A second stopper is arranged at positions on the movable seat corresponding to opposite ends of the fourth limit block; The second buffer is installed on the second stopper or the fourth limit block, and can gradually decelerate the fourth limit block to stop by contacting the fourth limit block or the second stopper.

5. The battery cell top cover press-fitting device according to claim 2, wherein the terminal press assembly comprises: An end pressure seat, slidably disposed on the movable seat and capable of moving along the second direction; The pressing piece is arranged on the end pressing seat and can be moved along the second direction by the end pressing seat to abut against or separate from the second end of the battery cell. 6 . The battery cell top cover press-fitting device according to claim 5 , wherein the end press assembly further comprises a pressure sensor, and the pressure sensor is disposed on the end press seat.

7. The battery cell top cover press-fitting device according to any one of claims 1 to 6, wherein the limiting mechanism comprises: Base; A first moving block, slidably disposed on the base, having a first inclined surface, and capable of moving along the first direction; The second moving block is slidably arranged on the base, and a second inclined surface is arranged at one end close to the first moving block. The second inclined surface is arranged opposite to and in contact with the first inclined surface. The second inclined surface can slide along the first inclined surface when the first moving block moves along the first direction, thereby moving the second moving block along the second direction, so that the end of the second moving block away from the first moving block abuts against or separates from the first end of the battery cell.

8. The battery cell top cover press-fitting device according to claim 7, wherein the limiting mechanism further comprises: a third stopper, disposed on the base, and used to stop the first moving block from continuing to move when the first moving block moves to the position of the third stopper; The third buffer is arranged on the third stopper and can gradually decelerate the first moving block to stop by contacting the first moving block.

9. According to the battery cell top cover pressing device according to any one of claims 1-6, the conveying mechanism includes a magnetic levitation stator, a magnetic levitation mover and a tray, the tray is arranged on the magnetic levitation mover, the tray is used to place the battery cell, and the first direction is the conveying direction of the magnetic levitation stator.

10. A battery cell top cover welding device, characterized in that: The invention comprises the battery cell top cover pressing device according to any one of claims 1 to 9.

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