Seal welding device

Abstract

The embodiment of the utility model provides a seal welding device, and relates to the technical field of seal welding, and the seal welding device comprises a box body which is provided with a seal cavity and is provided with a light-transmitting area; the clamp is arranged in the sealing cavity, and the clamp is used for fixing a workpiece to be welded; the laser welding module comprises a laser welding mechanism and a first driving mechanism, the laser welding mechanism is arranged on one side of the light-transmitting area, and light beams emitted by the laser welding mechanism can penetrate through the light-transmitting area and irradiate the workpiece; the first driving mechanism is used for driving the laser welding mechanism to move in the normal direction of the light-transmitting area. And the vacuumizing device is communicated with the sealing cavity. According to the embodiment of the invention, the gas in the sealing cavity of the sealed and welded workpiece can be reduced as much as possible, so that the quality of the workpiece is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing welding devices, in particular to a sealing welding device. BACKGROUND

[0002] In the related art, the electric core is designed with a liquid injection hole, which is used to inject electrolyte into the electric core. After the electrolyte is injected, the sealing pin is usually used to seal the connection with the liquid injection hole to achieve the purpose of sealing the electric core. During the process of injecting electrolyte into the electric core, some gas in the electrolyte will enter the electric core. The existence of gas will cause the electric core to be bad or of poor quality. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a sealing welding device to reduce the existence of gas in the electric core and improve the quality of the electric core.

[0004] The sealing welding device provided by the embodiments of the present application comprises:

[0005] The box body comprises a box body and a cover plate. The box body has a sealing cavity and an open end. The cover plate is in sealing connection with the open end. The box body is provided with a light transmission area.

[0006] The clamp is arranged in the sealing cavity and is used to fix the workpiece to be welded.

[0007] The laser welding module comprises a laser welding mechanism and a first driving mechanism. The laser welding mechanism is arranged on one side of the light transmission area. The light beam emitted by the laser welding mechanism can penetrate through the light transmission area and irradiate onto the workpiece. The first driving mechanism is used to drive the laser welding mechanism to move along the normal direction of the light transmission area.

[0008] The vacuumizing device is in communication with the sealing cavity.

[0009] Further, the clamp comprises a clamp plate, a pressing plate and a driving module. The pressing plate is arranged on one side of the clamp plate. The pressing plate and the clamp plate enclose a fixing space. The driving module is used to drive the pressing plate to move close to or away from the clamp plate.

[0010] Further, the driving module comprises a first sliding rail, a first sliding block, an elastic member and a clamping driving member. The pressing plate is in sliding connection with the first sliding rail. The first sliding block is in sliding connection with the first sliding rail. The elastic member connects the pressing plate and the first sliding block. The clamping driving member is used to drive the first sliding block to slide along the first sliding rail.

[0011] Further, the clamp further comprises an adjusting assembly, the adjusting assembly comprises a push plate, a push block and an adjusting driving mechanism, the push plate is in sliding connection with the clamp plate, the push block is installed on the push plate, the push block is used for abutting against the workpiece, and the adjusting driving mechanism is used for driving the push plate to move in a second direction.

[0012] Further, the push plate comprises a base, a first supporting part and a second supporting part, the first supporting part and the second supporting part are arranged at the base in a spaced manner along the second direction, and the push block is installed on each of the first supporting part and the second supporting part.

[0013] Further, the workpiece comprises an electric core and a sealing nail, the electric core is fixed on the clamp, and the sealing nail feeding mechanism is arranged on one side of the clamp and is used for conveying the sealing nail to the liquid injection hole of the electric core.

[0014] Further, the sealing nail feeding mechanism comprises a picking assembly, the picking assembly comprises a first picking piece, a second picking piece, a first driving piece and a second driving piece, the first driving piece is used for driving the first picking piece to move in a third direction, and the second driving piece is used for driving the second picking piece to move in the third direction.

[0015] Further, the feeding mechanism comprises a first moving assembly, a second moving assembly and a third moving assembly, the second moving assembly is installed on the first moving assembly, the third moving assembly is installed on the second moving assembly, and the picking assembly is installed on the third moving assembly, the first moving assembly is used for driving the second moving assembly to move in a second direction, the second moving assembly is used for driving the third moving assembly to move in a first direction, and the third moving assembly is used for driving the picking assembly to move in a third direction.

[0016] Further, the sealing nail feeding mechanism comprises a picking assembly, the picking assembly comprises a first picking piece, a second picking piece, a first driving piece and a second driving piece, the first driving piece is used for driving the first picking piece to move in a third direction, and the second driving piece is used for driving the second picking piece to move in the third direction.

[0017] Further, the sealing nail feeding mechanism comprises a picking assembly, the picking assembly comprises a first picking piece, a second picking piece, a first driving piece and a second driving piece, the first driving piece is used for driving the first picking piece to move in a third direction, and the second driving piece is used for driving the second picking piece to move in the third direction.

[0018] Further, the box comprises a second driving mechanism, and the second driving mechanism is used for driving the cover plate to move between the open end position and the non-open end position.

[0019] Further, the second driving mechanism comprises a first driving assembly and a second driving assembly, the second driving assembly is mounted on the first driving assembly, and the cover plate is connected with the second driving assembly.

[0020] Further, a dust removal mechanism is further included, and the dust removal mechanism has a dust removal opening located in the sealed cavity.

[0021] From the above technical solutions, the embodiments of the present application have at least the following beneficial effects:

[0022] In the sealing and welding device provided by the embodiments of the present application, the box has a sealed cavity, and a clamp is arranged in the sealed cavity. When welding a workpiece, the workpiece to be welded is placed into the accommodating cavity and fixed by the clamp, then the sealed cavity is sealed, vacuumizing treatment is performed on the sealed cavity, and then laser welding is performed on the workpiece by using the laser welding module. In the embodiments of the present application, the vacuumizing device can perform vacuumizing treatment on the sealed cavity, and the workpiece is located in the vacuumized sealed cavity during welding. Due to the effect of air pressure, the gas in the cavity of the workpiece can escape to the outside of the workpiece, so that the existence of gas in the cavity of the workpiece after sealing and welding can be reduced as much as possible. At the same time, the laser welding mechanism can be moved along the normal direction of the light transmission area by the first driving mechanism, so as to adjust the focal length of the laser welding mechanism, so that the laser welding mechanism is suitable for welding workpieces of different sizes, which helps to improve the welding quality and practicability of the sealing and welding device. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 Part of the structure schematic diagram of the sealing and welding device provided by an embodiment of the present application is shown in the following figure:

[0025] Figure 2 Part of the structure schematic diagram of the sealing and welding device provided by an embodiment of the present application is shown in the following figure:

[0026] Figure 3 The cooperation schematic diagram of the clamp and the sealing nail feeding mechanism in the sealing and welding device provided by an embodiment of the present application is shown in the following figure:

[0027] Figure 4 The structure schematic diagram of the clamp in the sealing and welding device provided by an embodiment of the present application is shown in the following figure:

[0028] Figure 5Another perspective view of the clamp in the sealing and welding device according to an embodiment of the present application is shown in FIG. 2;

[0029] Figure 6 A top view of the clamp in the sealing and welding device according to an embodiment of the present application is shown in FIG. 3;

[0030] Figure 7 A structure view of the adjusting assembly in the sealing and welding device according to an embodiment of the present application is shown in FIG. 4;

[0031] Figure 8 A structure view of another perspective of the adjusting assembly according to an embodiment of the present application is shown in FIG. 5; Figure 7

[0032] Figure 9 A structure view of another perspective of the sealing and welding device according to an embodiment of the present application is shown in FIG. 6;

[0033] Figure 10 A structure view of the sealing pin feeding mechanism in the sealing and welding device according to an embodiment of the present application is shown in FIG. 7;

[0034] Figure 11 A structure view of another perspective of the sealing pin feeding mechanism in the sealing and welding device according to an embodiment of the present application is shown in FIG. 8;

[0035] Figure 12 A structure view of the sealing pin transfer mechanism in the sealing and welding device according to an embodiment of the present application is shown in FIG. 9.

[0036] Reference signs:

[0037] 1. A sealing pin;

[0038] 100. A box body; 110. A sealing cavity; 120. A box body proper; 121. A light transmission area; 122. A detection channel; 130. A cover plate; 141. A first driving assembly; 142. A second driving assembly;

[0039] 200. A clamp; 210. A clamp plate; 211. A liquid guide groove; 212. A liquid receiving groove; 220. A pressing plate; 230. A driving module; 231. A first sliding rail; 232. A first sliding block; 233. An elastic member; 234. A clamping driving member; 240. A cutting and separating driving mechanism; 250. An adjusting assembly; 251. A push plate; 2511. A base; 2512. A first support portion; 2513. A second support portion; 252. An adjusting driving mechanism; 253. A push block; 254. An abutting block; 256. A push plate spring; 257. A push plate sliding block; 258. A push plate sliding rail;

[0040] 300. A laser welding module; 310. A laser welding mechanism; 320. A first driving mechanism;

[0041] ​400, a sealing nail feeding mechanism; 410, a picking assembly; 411, a first picking piece; 412, a second picking piece; 413, a first driving piece; 414, a second driving piece; 420, a first moving assembly; 430, a second moving assembly; 440, a third moving assembly;

[0042] 500, a sealing nail transfer mechanism; 510, a picking part; 520, a rotating driving mechanism; 530, a sensor; 540, an inductive sheet; 550, a limiting block; 561, a first stop block; 562, a second stop block;

[0043] 600, a detection mechanism;

[0044] 700, a dust removal mechanism; 710, a dust removal port;

[0045] 800, a material box. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] Before the electric core is sealed and welded with the sealing nail 1, electrolyte is injected into the electric core, and there are gases in the electrolyte. These gases will enter the inside of the electric core along with the electrolyte. The existence of the gases in the electric core will cause the electric core to be defective or of poor quality.

[0048] Therefore, the present application provides a sealing and welding device to effectively solve the above problems.

[0049] Referring to Figures 1 to 3 The present application discloses a sealing and welding device, which comprises a box body 100, a clamp 200, a laser welding module 300 and a vacuumizing device.

[0050] Specifically, the box body 100 has a sealed cavity 110, and the box body 100 is provided with a light-transmitting area 121; the clamp 200 is arranged in the sealed cavity 110 and is used for fixing a workpiece to be welded; the laser welding module 300 comprises a laser welding mechanism 310 and a first driving mechanism 320; the laser welding mechanism 310 is arranged on one side of the light-transmitting area 121, and the light beam emitted by the laser welding mechanism 310 can penetrate through the light-transmitting area 121 and irradiate onto the workpiece; the first driving mechanism 320 is used for driving the laser welding mechanism 310 to move along the normal direction of the light-transmitting area 121; and the vacuumizing device is in communication with the sealed cavity 110.

[0051] The normal direction of the light-transmitting region 121 refers to Figure 1 the X direction shown in the figure.

[0052] The sealing and welding device provided by the embodiments of the present application has the box body 100 with the sealing cavity 110, and the clamp 200 is arranged in the sealing cavity 110. In order to remove the gas in the workpiece as much as possible, the workpiece to be welded is placed in the clamp 200 when the workpiece is subjected to sealing and welding, then the sealing cavity 110 is sealed, the sealing cavity 110 is subjected to vacuumizing treatment, and then the workpiece is subjected to laser welding by the laser welding module 300.

[0053] In the embodiments of the present application, the workpiece is located in the vacuumized sealing cavity 110 when being welded, and the gas in the cavity of the workpiece can escape to the outside of the workpiece due to the pressure effect, so that the workpiece after welding can have the gas reduced as much as possible. Meanwhile, the laser welding mechanism 310 can be moved along the first direction by the first driving mechanism 320, so that the focal length of the laser welding mechanism 310 can be adjusted, the laser welding mechanism 310 can be adapted to the welding work of workpieces of different models, and the welding effect of the workpiece can be ensured, which is helpful to improve the practicability of the sealing and welding device.

[0054] In some embodiments of the present application, referring to Figure 1 the box body 100 includes the box body 120 and the cover plate 130, the box body 120 has the sealing cavity 110 and the open end, the open end is connected with the sealing cavity 110 and the outside, and the cover plate 130 is sealingly connected with the open end, so that the sealing cavity 110 is closed.

[0055] Further, the box body 100 further includes the second driving mechanism, which is used to drive the cover plate 130 to move between the position of the open end and the position of the non-open end. When the workpiece is clamped, the cover plate 130 is moved to the position of the non-open end, so as to facilitate the workpiece to be placed into the sealing cavity and clamped in the clamp. When the workpiece is welded, the cover plate 130 is sealingly connected with the open end, so that the closed sealing cavity 110 is defined in the box body 120, and then the vacuumizing device is opened, and the air in the sealing cavity 110 is discharged out of the sealing cavity 110 by the vacuumizing device.

[0056] In a possible implementation manner, referring to Figure 1The second driving mechanism includes a first driving assembly 141 and a second driving assembly 142, the second driving assembly 142 is installed on the first driving assembly 141, and the cover plate 130 is connected with the second driving assembly 142. Wherein, the first driving assembly 141 can drive the second driving assembly 142 to move along the X direction, and the second driving assembly 142 can drive the cover plate 130 to move along the X direction, so that the cover plate 130 can be separated from the box body 120 along the X direction and then moved along the X direction, which can effectively avoid the situation that the sealing effect is weakened or even invalid due to the damage of the sealing structure of the sealing connection between the cover plate 130 and the box body 120.

[0057] A large amount of smoke will be generated when laser welding is performed, and the smoke will seriously affect the welding quality of the workpiece after being attached to the surface of the workpiece.

[0058] Therefore, in some embodiments of the present application, referring to Figure 2 The sealing welding device includes a dust removal mechanism 700, the dust removal mechanism 700 has a dust removal port 710, the dust removal port 710 is located in the sealing cavity 110, and the dust removal port 710 is in communication with the outside through a pipeline. When welding the workpiece, the dust removal mechanism 700 is started to discharge the smoke generated by laser welding.

[0059] In some embodiments of the present application, referring to Figures 2 to 4 The clamp 200 includes a clamp plate 210, a pressing plate 220 and a driving module, the pressing plate 220 is arranged on one side of the clamp plate 210, the pressing plate 220 and the clamp plate 210 enclose a fixing space, and the driving module is used to drive the pressing plate 220 to move close to or away from the clamp plate 210. Specifically, the pressing plate 220 and the clamp plate 210 are arranged in parallel, the clamp plate 210 is relatively fixed, and the distance of the fixing space can be changed by driving the pressing plate 220 to move by using the driving module, so that the workpiece located in the fixing space can be clamped and fixed or released.

[0060] In some embodiments of the present application, referring to Figures 4 to 6As shown, the driving module comprises a first sliding rail 231, a first sliding block 232, an elastic member 233 and a clamping driving member 234. The pressing plate 220 is slidably connected with the first sliding rail 231. The first sliding rail 231 is slidably connected with the first sliding block 232. The elastic member 233 connects the pressing plate 220 and the first sliding block 232. The clamping driving member 234 is configured to drive the first sliding block 232 to slide along the first sliding rail 231. The elastic member 233 connects the pressing plate 220 and the first sliding block 232, that is, the pressing plate 220 and the first sliding block 232 are elastically connected. The clamping driving member 234 drives the first sliding block 232 to move, so as to change the relative position of the first sliding block 232 and the first sliding rail 231, thereby driving the elastic member 233 and the pressing plate 220 to slide along the first sliding rail 231. When the pressing plate 220 abuts against the workpiece, the elastic member 233 is compressed under stress, which avoids hard pressing of the workpiece by the pressing plate 220, reduces damage of the workpiece due to over-high load, and protects the workpiece.

[0061] In a possible implementation, the clamping driving member 234 is a pneumatic cylinder, and an output end of the pneumatic cylinder is connected with the first sliding block 232.

[0062] In this embodiment, as shown in Figures 3 to 6 , two clamps 200 are arranged side by side along the Y direction. Specifically, the first sliding rails 231 corresponding to the two clamps 200 are arranged at intervals along the Y direction, and the pneumatic cylinder is arranged at a position between the first sliding rails 231 corresponding to the two clamps 200. The pneumatic cylinder is connected with the first sliding blocks 232 corresponding to the two clamps 200 at the same time. In this way, one pneumatic cylinder can drive the pressing plates 220 of the two clamps 200 to move synchronously.

[0063] In a possible implementation, as shown in Figure 3 and Figure 6 , the elastic member 233 is a spring. One end of the spring is connected with the pressing plate 220, and the other end of the spring is connected with the first sliding block 232. The extension direction of the spring is consistent with the extension direction of the first sliding rail 231.

[0064] It should be noted that the extension direction of the first sliding rail 231 is the X direction in the figure, as shown in Figure 6 .

[0065] In one embodiment, as shown in Figure 4The sealing and welding device comprises a base plate and a cutting-off driving mechanism 240, the base plate is installed on the cutting-off driving mechanism 200, and the cutting-off driving mechanism 240 is used for driving the base plate to move along the Y direction. Specifically, two clamps 200 are arranged on the base plate along the Y direction at intervals, and the cutting-off driving mechanism 240 drives the base plate to move along the Y direction to drive the two clamps 200 to move along the Y direction as a whole. In actual application, when a plurality of battery cells need to be welded, one of the battery cells is welded first, then the cutting-off driving mechanism 240 is used to drive the clamp 200 to move along the Y direction, so that the other clamp 200 is located in the welding area of the laser welding module 300, and then the second battery cell is welded.

[0066] In a possible implementation, the cutting-off driving mechanism 240 comprises an electric cylinder, and the electric cylinder is used for driving the base plate to reciprocate along the Y direction, as shown in Figure 4 Of course, the cutting-off driving mechanism 240 can also be other mechanisms capable of realizing linear driving, such as a lead screw nut mechanism, and the like, which are not limited herein.

[0067] In some embodiments of the present application, referring to Figure 2 、 Figure 5 、 Figure 7 and Figure 8 , the clamp 200 further comprises an adjusting assembly 250, and the adjusting assembly 250 is used for adjusting the relative position of the workpiece in the clamp plate 210 and the pressing plate 220.

[0068] In the present embodiment, referring to Figure 3 、 Figures 6 to 8 , the adjusting assembly 250 comprises a push plate 251, a push block 253 and an adjusting driving mechanism 252, the push plate 251 is in sliding connection with the clamp plate 210, the push block 253 is installed on the push plate 251, the push block 253 is used for abutting against the workpiece, and the adjusting driving mechanism 252 is used for driving the push plate 251 to move along the second direction. Wherein, the push block 253 is located between the clamp plate 210 and the pressing plate 220, so that the push block 253 can enter the enclosed space enclosed by the clamp plate 210 and the pressing plate 220, and then push the workpiece placed in the enclosed space to move along the second direction, so as to adjust the relative position of the workpiece in the second direction, so that the welding position of the workpiece is located in the welding area of the laser welding module 300.

[0069] Wherein, the second direction refers to the Y direction in Figure 3 .

[0070] In the present embodiment, referring to Figure 7 and Figure 8The adjusting assembly 250 comprises an abutting block 254 and a push plate spring 256. The abutting block 254 is fixedly connected with the clamp plate 210, and the push plate spring 256 is connected with the push plate 251 and the push plate spring 256. The push plate spring 256 can effectively prevent the push plate 251 from hard pressing the battery cell and causing damage to the battery cell.

[0071] Further, the adjusting assembly 250 further comprises a push plate sliding block 257 and a push plate sliding rail 258. The push plate sliding block 257 is slidingly connected with the push plate sliding rail 258, and the push plate 251 is slidingly connected with the clamp plate 210 through the push plate sliding block 257 and the push plate sliding rail 258.

[0072] In the embodiment, as shown in Figure 3 and Figure 4 , one side of the push plate is formed with two fixing spaces, and each fixing space is used for fixing a workpiece. In the embodiment, as shown in Figure 3 , Figure 7 and Figure 8 , the push plate 251 comprises a base portion 2511, a first support portion 2512 and a second support portion 2513. The first support portion 2512 and the second support portion 2513 are arranged on the base portion 2511 in a second direction and are spaced apart from each other. The first support portion 2512 and the second support portion 2513 are both provided with a push block 253. In this way, the position of the workpieces in the two fixing spaces can be adjusted simultaneously by using one push plate 251, thereby simplifying the structural design of the clamp. The second direction is the Y direction in Figure 7 .

[0073] It should be understood that when the number of fixing spaces is more than one, the push plate 251 can be provided with more support portions and push blocks 253 to adjust the positions of the workpieces in the fixing spaces.

[0074] In some embodiments of the present application, as shown in Figure 2 , the workpiece comprises a battery cell and a sealing nail 1. The battery cell is fixed on the clamp 200, and the sealing nail feeding mechanism 400 is arranged on one side of the clamp 200. The sealing nail feeding mechanism 400 is used for conveying the sealing nail to the liquid injection hole of the battery cell. When the sealing nail 1 is conveyed to the liquid injection hole, the sealing nail 1 cooperates with the liquid injection hole of the battery cell, and then the laser welding module 300 performs laser welding on the sealing nail 1, so that the sealing nail 1 and the liquid injection hole of the battery cell are sealingly connected.

[0075] When the sealing nail 1 cooperates with the liquid injection hole of the battery cell, the electrolyte of the battery cell may overflow. In the embodiment, the liquid guide groove 211 is arranged on one side of the liquid injection hole of the battery cell. The clamp plate 210 is provided with the liquid guide groove 211 and a liquid receiving channel in communication with the liquid guide groove 211. The end of the liquid receiving channel is provided with a liquid receiving groove 212, as shown in Figure 3When the electrolyte of the battery cell overflows, the overflowed electrolyte can flow along the liquid guide groove 211 and the liquid receiving channel to the liquid receiving groove 212.

[0076] Referring to Figures 8 to 11 The sealing pin feeding mechanism 400 comprises a picking assembly 410 for picking the sealing pin 1 to transport the sealing pin 1 to the liquid injection hole of the battery cell.

[0077] In the embodiment, please continue to refer to Figures 9 to 11 The picking assembly 410 comprises a first picking member 411, a second picking member 430, a first driving member 413 for driving the first picking member 411 to move in the third direction, and a second driving member 414 for driving the second picking member 430 to move in the third direction. The first driving member 413 and the second driving member 414 can act independently, so that the first picking member 411 and the second picking member 430 can act independently.

[0078] In a possible implementation, please continue to refer to Figures 9 to 11 Taking the parallel arrangement of two battery cells as an example, the picking assembly 410 comprises a first picking member 411 and a second picking member 430, which are respectively used for picking a sealing pin 1. When welding the first battery cell, one of the first picking member 411 and the second picking member 430 moves in the Z direction to place the sealing pin 1 at the liquid injection hole of the battery cell, and the other sealing pin 1 remains stationary. In this way, the two sealing pins 1 are staggered, which can prevent the two sealing pins 1 from moving downward in the Z direction at the same time and pressing on the battery cell to damage the battery cell or the shape of the sealing pin 1, thereby reducing the welding defects or battery cell defects, and facilitating the quality of the battery cell.

[0079] In the above embodiment, the shape of the sealing pin 1 refers to the position and the placement angle of the sealing pin 1. The correct cooperation of the sealing pin 1 with the liquid injection hole of the battery cell is an important prerequisite for the quality of the sealing welding of the battery cell, and the shape of the sealing pin is usually adjusted during the feeding process. The sealing pin 1 after adjustment is placed at the liquid injection hole of the battery cell by the picking assembly 410. Therefore, during the transportation of the sealing pin 1, the shape of the sealing pin 1 needs to be ensured to ensure the accurate cooperation of the sealing pin 1 with the liquid injection hole of the battery cell, and thus the quality of the battery cell.

[0080] In some embodiments of the present application, please continue to refer to Figures 9 to 11The loading mechanism includes a first moving assembly 420, a second moving assembly 430, and a third moving assembly 440. The second moving assembly 430 is installed on the first moving assembly 420, the third moving assembly 440 is installed on the second moving assembly 430, and the pickup assembly 410 is installed on the third moving assembly 440. The first moving assembly 420 is configured to drive the second moving assembly 430 to move in a second direction, the second moving assembly 430 is configured to drive the third moving assembly 440 to move in a first direction, and the third moving assembly 440 is configured to drive the pickup assembly 410 to move in a third direction.

[0081] The first direction refers to the X direction shown in the figure, the second direction refers to the Y direction shown in the figure, and the third direction refers to the Z direction shown in the figure. Figure 9 The first direction refers to the X direction shown in the figure, the second direction refers to the Y direction shown in the figure, and the third direction refers to the Z direction shown in the figure. Figure 9 The first direction refers to the X direction shown in the figure, the second direction refers to the Y direction shown in the figure, and the third direction refers to the Z direction shown in the figure. Figure 9 The first direction refers to the X direction shown in the figure, the second direction refers to the Y direction shown in the figure, and the third direction refers to the Z direction shown in the figure.

[0082] In some embodiments of the present application, referring to Figure 2 , Figure 2 and Figure 11 , the sealing welding device includes a sealing nail transfer mechanism 500 and a detection mechanism 600. The sealing nail transfer mechanism 500 is configured to pick up the sealing nail 1 and drive the sealing nail 1 to rotate. The detection mechanism 600 is configured to detect the presence or absence of the sealing nail 1. The detection mechanism 600 is also configured to detect the position of the sealing nail 1. By detecting the presence or absence of the sealing nail 1 through the detection mechanism 600, the situation of missing the sealing nail 1 during the welding of the battery cell can be reduced. Meanwhile, the detection mechanism 600 is also configured to detect the position of the sealing nail 1, so that the shape of the sealing nail 1 can be determined.

[0083] In the present embodiment, referring to Figure 1 , the detection mechanism 600 is arranged outside the box body 100. The box body 100 is provided with a detection channel 122, and a lens is arranged at the detection channel 122. The detection mechanism 600 can collect information of the sealing nail 1 in the sealing nail transfer mechanism through the detection channel 122.

[0084] In a possible implementation, the detection mechanism 600 includes a camera. The camera is configured to collect information of the sealing nail and transmit the information to a control center, so as to determine the presence or absence of the sealing nail 1 and determine the shape of the sealing nail 1, etc.

[0085] In some embodiments of the present application, referring to Figure 12 , the sealing nail transfer mechanism 500 includes a pickup part 510 and a rotating driving mechanism 520. The pickup part 510 is arranged on one side of the sealing nail loading mechanism 400, and the rotating driving mechanism 520 is configured to drive the pickup part 510 to rotate.

[0086] In the above embodiment, the rotating driving mechanism 520 is specifically a motor. An output end of the motor is connected with the pickup part 510, so as to drive the pickup part 510 to rotate.

[0087] In a possible implementation, the picking part 510 has an adsorption port formed with a negative pressure, and the sealing nail 1 is adsorbed and fixed by vacuum adsorption.

[0088] Of course, the picking part 510 can also use other gripping mechanisms that can be used to grip the sealing nail 1 to perform picking work, which is not limited herein.

[0089] Referring to Figure 12 , the sealing nail transfer mechanism 500 further comprises a sensor 530 and an inductive sheet 540, the inductive sheet 540 is fixedly connected with the picking part 510, and the inductive sheet 540 rotates synchronously with the picking part 510 when the rotating driving mechanism 520 drives the picking part 510 to rotate. When the inductive sheet 540 rotates, the inductive sheet 540 can move to the detection area of the sensor 530 or move from the detection area of the sensor 530 to the non-detection area. When the sensor 530 detects the inductive sheet 540, the camera is started and detects whether the sealing nail 1 is picked up in the picking part 510, and simultaneously detects the shape of the sealing nail 1 in the picking part 510.

[0090] In the embodiment, after the sealing nail 1 is conveyed to the suction position of the picking part 510 and adsorbed by the picking part 510, the motor drives the picking part 510 to rotate by 90°, so that the sealing nail 1 is rotated to the detection area of the camera.

[0091] Further, referring to Figure 12 , the sealing nail transfer mechanism 500 further comprises a limiting block 550, a first stop block 561 and a second stop block 562, the limiting block 550 is fixedly connected with the picking part 510, and the first stop block 561 and the second stop block 562 are respectively arranged on two sides of the limiting block 550, so as to stop the limiting block 550 by the first stop block 561 and the second stop block 562, thereby limiting the rotation angle of the picking part 510.

[0092] Referring to Figure 2 , one side of the sealing nail transfer mechanism 500 is provided with a bin 800, and the bin 800 is used for storing the sealing nail 1.

[0093] In a possible implementation, the bin 800 is arranged on one side of the sealing nail transfer mechanism 500, and when the sealing nail 1 falls due to broken vacuum or other reasons, the fallen sealing nail 1 can be collected into the bin 800.

[0094] In an embodiment, a workpiece is welded by using a sealing welding device, which comprises the following steps:

[0095] Placing the workpiece to be welded in the sealing cavity 110 and fixing it by the clamp 200;

[0096] Sealing the sealing cavity 110 and performing vacuumizing treatment;

[0097] The workpiece in the sealed cavity 110 is laser welded by the laser welding module 300.

[0098] Further, after the welding is completed, the sealed cavity 110 is broken vacuum to make the air pressure in the sealed cavity 110 flat with the ambient air pressure, and then the welded workpiece is taken out of the sealed cavity 110.

[0099] In the above embodiment, the air in the sealed cavity 110 can be discharged by the vacuumizing treatment of the sealed cavity 110, and the gas in the workpiece cavity can be discharged from the workpiece as much as possible due to the pressure effect. That is, the workpiece is sealed and welded in the sealed cavity 110, thereby reducing the gas in the workpiece cavity to be sealed and welded.

[0100] In the above embodiment, when the sealed cavity 110 is vacuumized, the corresponding vacuum degree can be selected according to the specific process requirements to ensure that the gas in the workpiece can be discharged from the workpiece cavity to be sealed and welded as much as possible.

[0101] It should be understood that the sealed welding method of the embodiments of the present application can be applied to the sealed welding device as described above.

[0102] In an embodiment of the present application, the workpiece to be welded is specifically a battery cell and a sealing nail 1, the battery cell has a liquid injection hole, and the sealing nail 1 is connected with the liquid injection hole in cooperation. After the battery cell is filled with electrolyte, the sealed welding of the battery cell and the sealing nail 1 is completed in the vacuum sealed cavity 110. In this way, the gas in the electrolyte can be discharged from the battery cell as much as possible, which is beneficial to ensure the quality of the battery cell.

[0103] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0104] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0105] In the description of the application, it should be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific situation.

[0106] In the description of the application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A sealing welding device, characterized in that, The utility model relates to a laser welding device and a laser welding method. The laser welding device comprises a box body, a clamp, a laser welding module and a vacuum pumping device. The box body comprises a box body proper and a cover plate. The box body proper has a sealed cavity and an open end. The cover plate is sealingly connected with the open end.

2. The sealing and welding apparatus according to claim 1, characterized in that, The box body is provided with a light-transmitting area.

3. The sealing and welding apparatus according to claim 2, wherein The clamp is arranged in the sealed cavity and is used to fix a workpiece to be welded.

4. The sealing and welding apparatus according to claim 3, wherein The laser welding module comprises a laser welding mechanism and a first driving mechanism.

5. The sealing and welding apparatus of claim 4, wherein The laser welding mechanism is arranged on one side of the light-transmitting area.

6. The sealed weld apparatus of claim 1, wherein, The laser beam emitted by the laser welding mechanism can transmit through the light-transmitting area and irradiate on the workpiece.

7. The sealing and welding apparatus of claim 6, wherein The first driving mechanism is used to drive the laser welding mechanism to move along the normal direction of the light-transmitting area.

8. The sealing and welding apparatus of claim 7, wherein The vacuum pumping device is communicated with the sealed cavity. The clamp comprises a clamp plate, a pressing plate and a driving module. The pressing plate is arranged on one side of the clamp plate. The pressing plate and the clamp plate enclose a fixing space. The driving module is used to drive the pressing plate to move close to or away from the clamp plate. The driving module comprises a first sliding rail, a first sliding block, an elastic member and a clamping driving member. The pressing plate is slidingly connected with the first sliding rail. The first sliding block is slidingly connected with the first sliding rail. The elastic member connects the pressing plate and the first sliding block. The clamping driving member is used to drive the first sliding block to slide along the first sliding rail. The clamp further comprises an adjusting assembly. The adjusting assembly comprises a push plate, a push block and an adjusting driving mechanism. The push plate is slidingly connected with the clamp plate. The push block is installed on the push plate. The push block is used to abut against the workpiece. The adjusting driving mechanism is used to drive the push plate to move along a second direction. The push plate comprises a base, a first supporting part and a second supporting part. The first supporting part and the second supporting part are arranged on the base along the second direction. The first supporting part and the second supporting part are both installed with the push block. The workpiece comprises an electric core and a sealing nail. The electric core is fixed on the clamp. The sealing welding device further comprises a sealing nail feeding mechanism. The sealing nail feeding mechanism is arranged on one side of the clamp. The sealing nail feeding mechanism is used to deliver the sealing nail to the liquid injection hole of the electric core. The sealing nail feeding mechanism comprises a picking assembly. The picking assembly comprises a first picking member, a second picking member, a first driving member and a second driving member. The first driving member is used to drive the first picking member to move along a third direction. The second driving member is used to drive the second picking member to move along the third direction. The feeding mechanism comprises a first moving assembly, a second moving assembly and a third moving assembly. The second moving assembly is installed on the first moving assembly. The third moving assembly is installed on the second moving assembly. The picking assembly is installed on the third moving assembly. The first moving assembly is used to drive the second moving assembly to move along a second direction. The second moving assembly is used to drive the third moving assembly to move along a first direction. The third moving assembly is used to drive the picking assembly to move along a third direction.

9. The sealing and welding apparatus of claim 6, wherein The sealing welding device comprises a sealing pin transfer mechanism and a detection mechanism, the sealing pin transfer mechanism is used for picking up the sealing pin and driving the sealing pin to rotate, and the detection mechanism is used for detecting whether the sealing pin exists or not and detecting the position of the sealing pin.

10. The sealing and welding apparatus of claim 9, wherein The sealing pin transfer mechanism comprises a picking-up part and a rotating driving mechanism, the picking-up part is arranged on one side of the sealing pin feeding mechanism, and the rotating driving mechanism is used for driving the picking-up part to rotate.

11. The sealing and welding apparatus of claim 1, wherein The box comprises a second driving mechanism, the second driving mechanism is used for driving the cover plate to move between the open end position and the non-open end position.

12. The sealing and welding apparatus of claim 11, wherein, The second driving mechanism comprises a first driving assembly and a second driving assembly, the second driving assembly is mounted on the first driving assembly, and the cover plate is connected with the second driving assembly.

13. The sealing and welding apparatus of claim 1, wherein Further comprising a dust removal mechanism, the dust removal mechanism has a dust removal port, and the dust removal port is located in the sealing cavity.

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