Welding protection device and battery production module

Abstract

The utility model relates to the technical field of batteries, and discloses a welding protection device and a battery production module.The welding protection device comprises a lifting platform, a moving device and a protection cover, the moving device is connected to the lifting platform, the protection cover is connected to the moving device, and the lifting platform can drive the moving device to ascend and descend; and the protective cover is driven to lift between a first height and a second height higher than the first height. The moving device can drive the protective cover to move between a first position and a second position relative to the lifting table. The lifting mechanism drives the protective cover to descend to the first height so as to cover the battery cell welding position for welding. After welding is completed, the lifting mechanism drives the lifting table to ascend, so that the protective cover is lifted, in the process, the moving device drives the protective cover to transversely move to leave the position above the battery cell, and when the protective cover stops, even if welding slag is thrown off from the protective cover and falls off under the inertia effect, the welding slag cannot fall onto the surface of the battery cell; and short-circuit failure and even spontaneous combustion of the battery cell caused by penetration of welding slag through the battery cell diaphragm are avoided.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a welding protection device and a battery production module. Background Technology

[0002] In current battery manufacturing processes, the tabs of the positive and negative electrodes of a battery cell need to be welded to the positive and negative electrode cover plates using laser welding. During this welding process, a protective cover is required to cover the welded area of ​​the cell to prevent weld spatter from damaging the cell. Specifically, the protective cover is connected to a welding lifting device consisting of a lifting mechanism and a laser welding mechanism. The protective cover is connected to the lifting mechanism, and the laser welding mechanism performs laser welding inside the protective cover.

[0003] During welding, the lifting mechanism lowers the protective cover and places it over the welding point of the battery cell. Then, the laser welding mechanism welds the welding point. After welding is completed, the lifting mechanism raises the protective cover and removes it from the welding point.

[0004] However, during welding, welding slag splatters and sticks to the inner wall of the protective cover. When the lifting mechanism moves the protective cover upward to the designated height and stops, due to inertia, the welding slag may be thrown off the protective cover and fall onto the surface of the battery cell. The falling welding slag may puncture the battery cell diaphragm, causing the battery cell to short-circuit and fail or even spontaneously combust. Utility Model Content

[0005] In view of this, this application provides a welding protection device and welding equipment to solve the problem that welding slag on the inner wall of the protective cover may fall onto the surface of the battery cell and puncture the battery cell diaphragm under the action of inertia during the welding process.

[0006] In a first aspect, this application provides a welding protection device, comprising: a lifting platform, a moving device, and a protective cover, wherein the moving device is connected to the lifting platform, and the protective cover is connected to the moving device, wherein...

[0007] The lifting platform is adapted to drive the mobile device to move up and down, so as to drive the protective cover to move up and down between a first height and a second height higher than the first height;

[0008] The moving device is adapted to drive the protective cover to move relative to the lifting platform between a first position and a second position. When the protective cover is in the first position and at the first height, the protective cover is placed over the cell welding point. When the protective cover is in the second position and at the second height, the protective cover is away from the cell.

[0009] Optionally, the mobile device includes:

[0010] Guide rails are connected to the lifting platform;

[0011] A slider is slidably mounted on the guide rail, and the protective cover is connected to the slider;

[0012] A drive assembly is connected to the lifting platform and to the protective cover, the drive assembly being adapted to drive the protective cover and the slider to slide along the guide rail, so that the protective cover moves between the first position and the second position.

[0013] Optionally, the mobile device further includes:

[0014] Mounting block, the slider is connected to the mounting block, the driving component is connected to the mounting block, and mounting portions are respectively provided on both sides of the mounting block;

[0015] The resilient locking pin includes a housing, an elastic element, and a locking pin slidably inserted into the housing. The housing is connected to the mounting portion, and the locking pin is connected to the housing via the elastic element. Each mounting portion has at least two resilient locking pins. The protective cover has insertion holes on both sides, and the locking pins are inserted into these holes one-to-one to connect the protective cover to the mounting block. The direction in which the locking pins leave the insertion holes is consistent with the compression direction of the elastic element.

[0016] Optionally, it also includes:

[0017] An unlocking device is provided, wherein the unlocking device is connected to an unlocking part, the unlocking part is provided with a first slot, and the moving device is also adapted to drive the protective cover to move relative to the lifting platform between a second position and a third position. When the protective cover is in the third position and at the second height, the locking pin is engaged in the first slot. The unlocking device is adapted to drive the unlocking part to move along the direction in which the locking pin leaves the insertion hole, so as to drive the locking pin to leave the insertion hole.

[0018] Optionally, the mobile device further includes:

[0019] A baffle is telescopically connected to the mounting block. The latch is provided with a second slot. When the latch is inserted into the insertion hole and the baffle is in the extended state, the baffle is inserted into the second slot and restricts the latch from leaving the insertion hole. When the baffle is in the retracted state, the baffle leaves the second slot and the latch can leave the insertion hole.

[0020] Optionally, it also includes:

[0021] A cleaning device is disposed on the moving path of the protective cover, and the cleaning device is adapted to clean the interior of the protective cover located at the second position and at the second height.

[0022] Optionally, the cleaning device includes:

[0023] The housing has a top opening and a side opening on its top and side surfaces, respectively, for the protective cover to pass through.

[0024] A brush wheel is rotatably connected inside the housing. When the protective cover is in the second position and at the second height, the protective cover enters the housing through the top opening and the side opening and contacts the brush wheel.

[0025] A driving device is used to drive the brush wheel to rotate;

[0026] A dust collection box is connected to the bottom of the housing, and the interior of the dust collection box communicates with the interior of the housing;

[0027] The negative pressure dust removal device is connected to the inside of the dust discharge box.

[0028] Optionally, the width inside the housing decreases sequentially from top to bottom, and the width inside the dust collection box decreases sequentially from top to bottom.

[0029] Optionally, it also includes:

[0030] A lifting device is connected to the cleaning device. The lifting device is adapted to drive the cleaning device to move up and down between a third height and a fourth height below the third height. When the cleaning device is at the third height, it can clean the inside of the protective cover located at the second position and the second height.

[0031] Secondly, this application also provides a battery production module, including any of the above-mentioned welding protection devices.

[0032] This application provides a welding protection device, including a lifting platform, a moving device, and a protective cover. A lifting mechanism drives the lifting platform to rise and fall. The moving device is connected to the lifting platform and rises and falls with it. The protective cover is connected to the moving device, which drives the protective cover to move between a first position and a second position relative to the lifting platform. When the lifting mechanism drives the lifting platform to rise and fall, it causes the protective cover to rise and fall between a first height and a second height. When the protective cover is in the first position and at the first height, it covers the welding point of the battery cell. When the protective cover is in the second position and at the second height, it moves away from above the battery cell. Before welding the tabs of the battery cell, the moving device drives the protective cover to move laterally, moving it from the second position relative to the lifting platform to the first position, where it is at the second height and above the welding point of the battery cell. Then, the lifting mechanism drives the lifting platform to fall, causing the protective cover to fall to the first height and cover the welding point of the battery cell, allowing welding to proceed. After welding is completed, the lifting mechanism drives the lifting platform to rise, causing the protective cover to rise from the first height to the second height. As the protective cover rises and moves away from the welding point, the moving device begins to drive the protective cover laterally, moving it from a first position relative to the lifting platform to a second position. Once the protective cover reaches the second position, the moving device stops, and the protective cover rises to a second height, at which point the lifting mechanism stops. Because the protective cover is now above the battery cell, even if welding slag is thrown off the cover due to inertia and falls, it will not fall onto the battery cell surface, preventing the slag from piercing the battery cell diaphragm and causing a short circuit or even spontaneous combustion. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a welding protection device according to an embodiment of this application when the protective cover is in the first position;

[0035] Figure 2 This is a schematic diagram of the structure of a welding protection device according to an embodiment of this application when the protective cover is in the second position;

[0036] Figure 3 This is a schematic diagram of the structure of a welding protection device according to an embodiment of this application when the protective cover is in the third position;

[0037] Figure 4 This is a first-view schematic diagram of a lifting platform and moving device of a welding protection device according to an embodiment of this application.

[0038] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0039] Figure 6 This is a second-view schematic diagram of a lifting platform and moving device of a welding protection device according to an embodiment of this application.

[0040] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0041] Figure 8 This is a schematic diagram showing the connection between the elastic locking pin and the protective cover of a welding protection device according to an embodiment of this application;

[0042] Figure 9 This is a schematic diagram of the unlocking device structure of a welding protection device according to an embodiment of this application;

[0043] Figure 10 This is a schematic diagram illustrating the engagement between the unlocking device and the elastic locking pin of a welding protection device according to an embodiment of this application.

[0044] Figure 11 for Figure 10 Enlarged view of point C in the middle;

[0045] Figure 12 This is a cross-sectional view of a welding protection device according to an embodiment of this application, after the elastic locking pin is connected to the baffle.

[0046] Figure 13 This is a schematic diagram of the elastic locking pin structure of a welding protection device according to an embodiment of this application;

[0047] Figure 14 This is a schematic diagram of the cleaning device structure of a welding protection device according to an embodiment of this application;

[0048] Figure 15 This is a cross-sectional schematic diagram of a cleaning device for a welding protection device according to an embodiment of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Lifting platform; 2. Protective cover; 3. Moving device; 31. Guide rail; 32. Slider; 33. Drive assembly; 331. Second motor; 332. Second lead screw; 333. Second lead screw nut; 34. Mounting block; 35. Elastic locking pin; 351. Housing; 352. Elastic element; 353. Locking pin; 4. Unlocking device; 5. Unlocking part; 6. Baffle; 7. Cleaning device; 71. Housing; 72. Brush wheel; 73. Dust collection box; 8. Lifting mechanism; 81. Slide rail; 82. Guide block; 83. First motor; 84. First lead screw; 85. First lead screw nut; 9. Insertion hole; 10. Step; 11. First slot; 12. Second slot; 13. Baffle; 14. Dust outlet; 15. Lifting device; 16. Dust suction device; 17. Guide post; 18. Guide hole; 19. Elastic element; 20. Mounting part; 21. Top opening; 22. Side opening; 23. Battery cell. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The following is combined with Figures 1 to 15 This describes an embodiment of the present application.

[0053] According to embodiments of this application, on the one hand, such as Figures 1 to 2 As shown, a welding protection device is provided, including a lifting platform 1, a moving device 3, and a protective cover 2. The lifting platform 1 is connected to a frame via a lifting mechanism 8, which can drive the lifting platform 1 to rise or fall relative to the frame. The moving device 3 is connected to the lifting platform 1 and rises and falls with it. The protective cover 2 is connected to the moving device 3, which can drive the protective cover 2 to move laterally, causing the protective cover 2 to move between a first position and a second position relative to the lifting platform 1. When the lifting mechanism 8 drives the lifting platform 1 to rise and fall, it also causes the protective cover 2 to rise and fall between a first height and a second height, with the second height being higher than the first height. When the protective cover 2 is in the first position and at the first height, it covers the welding point of the battery cell. When the protective cover 2 is in the second position and at the second height, it moves away from above the battery cell 23.

[0054] Before welding the tabs of the battery cell 23, the moving device 3 drives the protective cover 2 to move laterally, moving it from a second position relative to the lifting platform 1 to a first position. At this point, the protective cover 2 is at a second height and above the welding point of the battery cell. Then, the lifting mechanism 8 drives the lifting platform 1 to descend, causing the protective cover 2 to descend to the first height and cover the welding point of the battery cell. When welding is performed at this time, the solder slag is blocked by the protective cover 2, preventing it from damaging the battery cell 23.

[0055] After welding is completed, the lifting mechanism 8 drives the lifting platform 1 to rise, causing the protective cover 2 to rise from a first height to a second height. As the protective cover 2 rises and leaves the welding area, the moving device 3 begins to drive the protective cover 2 to move laterally, causing the protective cover 2 to move from a first position relative to the lifting platform 1 to a second position. The moving device 3 stops driving when the protective cover 2 reaches the second position, and simultaneously the protective cover 2 rises to the second height, at which point the lifting mechanism 8 stops driving. Since the protective cover 2 is now above the battery cell 23, even if welding slag is thrown off the protective cover 2 due to inertia and falls, it will not fall onto the surface of the battery cell 23, thus preventing the welding slag from piercing the diaphragm of the battery cell 23 and causing a short circuit or even spontaneous combustion.

[0056] After the protective cover 2 stops, clean the inside of the protective cover 2. The cleaning method can be direct cleaning or cleaning by removing the protective cover 2.

[0057] Among them, such as Figure 4 As shown, the lifting mechanism 8 includes: a slide rail 81, a guide block 82, a first motor 83, a first lead screw 84, and a first lead screw nut 85. The lifting platform 1 includes a vertically arranged base plate and a side plate. The slide rail 81 is vertically arranged on the side plate of the lifting platform 1. The guide block 82 is connected to the frame and sleeved on the slide rail 81. The slide rail 81 can move relative to the guide block 82 along its length, so that the lifting platform 1 can rise and fall relative to the frame. The first motor 83 is connected to the frame, and the first lead screw 84 is driven by the first motor 83, so that the first motor 83 can drive the first lead screw 84 to rotate. The first lead screw nut 85 is connected to the side plate of the lifting platform 1 and fits onto the first lead screw 84. When the first motor 83 drives the first lead screw 84 to rotate, due to the lead screw transmission principle, the first lead screw nut 85 moves along the lead screw, thereby driving the lifting platform 1 to rise and fall relative to the frame.

[0058] In optional embodiments, such as Figure 6As shown, the moving device 3 includes guide rails 31, sliders 32, and a drive assembly 33. Two guide rails 31 are arranged parallel to each other and connected to the bottom of the base plate of the lifting platform 1. Two sliders 32 are connected to the protective cover 2, with each slider 32 corresponding to one guide rail 31. When the slider 32 slides along the guide rail 31, the protective cover 2 moves laterally relative to the lifting platform 1, allowing the protective cover 2 to move between a first position and a second position relative to the lifting platform 1.

[0059] The drive assembly 33 is connected to the bottom of the base plate of the lifting platform 1, and the drive assembly 33 is connected to the protective cover 2. The drive assembly 33 can be used to drive the protective cover 2 to move between the first position and the second position. At this time, the slider 32 slides along the guide rail 31 to provide guidance and support.

[0060] Among them, such as Figure 6 As shown, the drive assembly 33 includes a second motor 331, a second lead screw 332, and a second lead screw nut 333. The second motor 331 is connected to the base plate of the lifting platform 1, and the second lead screw 332 is poweredly connected to the second motor 331, enabling the second motor 331 to drive the second lead screw 332 to rotate. The second lead screw nut 333 is connected to the protective cover 2 and is fitted onto the second lead screw 332. When the second motor 331 drives the second lead screw 332 to rotate, due to the lead screw transmission principle, the second lead screw nut 333 moves along the lead screw, thereby moving the protective cover 2 relative to the lifting platform 1 between a first position and a second position.

[0061] In a further embodiment, such as Figures 5 to 8 As shown, the moving device 3 also includes a mounting block 34 and an elastic locking pin 35. Two sliders 32 are both connected to the top of the mounting block 34, and the second lead screw nut 333 of the drive assembly 33 is connected to the mounting block 34, enabling the drive assembly 33 to drive the mounting block 34 to move. Mounting portions 20 are provided on both sides of the mounting block 34.

[0062] like Figure 13 As shown, the elastic locking pin 35 includes a housing 351, an elastic element 352, and a locking pin 353. The housing 351 has a cavity and is connected to the mounting portion 20. The elastic element 352 is a spring and is disposed within the cavity. The locking pin 353 passes through the housing 351 and the elastic element 352, allowing the locking pin 353 to move relative to the housing 351. A step 10 is provided on the side wall of the locking pin 353. The first end of the elastic element 352 abuts against the end face of the step 10, and the second end of the elastic element 352 abuts against the cavity wall.

[0063] The protective cover 2 has insertion holes 9 on both sides. Under the elastic force of the elastic element 352, the locking pin 353 is inserted into the insertion hole 9. At this time, the protective cover 2 is connected to the mounting block 34 through the locking pin 353, and thus the slider 32 is connected to the protective cover 2 through the mounting block 34. The drive assembly 33 is connected to the protective cover 2 through the mounting block 34. When the drive assembly 33 drives the mounting block 34 to move along the slide rail 81, the protective cover 2 moves relative to the lifting platform 1 between the first position and the second position.

[0064] When force is applied to overcome the elastic force of the elastic element 352 and pull the locking pin 353 out of the insertion hole 9, the elastic element 352 is compressed. After the force is released, the elastic element 352 springs back and pushes the locking pin 353 back to its original position.

[0065] With this configuration, when removing the protective cover 2, force is applied to pull each locking pin 353 out of its corresponding insertion hole 9, and the protective cover 2 can be removed. During installation, force is first applied to overcome the elastic force of the elastic element 352 to pull the locking pin 353, allowing the protective cover 2 to be placed between the two locking pins 353. While placing the protective cover 2 between the two locking pins 353, the insertion holes 9 on both sides of the protective cover 2 are aligned with the locking pins 353, and then the force applied to the locking pins 353 is released. Under the elastic action of the elastic element 352, each locking pin 353 returns to its original position and inserts into its corresponding insertion hole 9, thus installing the protective cover 2 onto the mounting block 34. This facilitates the removal of the protective cover 2 for cleaning, maintenance, or replacement.

[0066] It is worth noting that the flexible locking pin 35 is a commonly used standard part.

[0067] Furthermore, such as Figures 9 to 11 As shown, it also includes an unlocking device 4, on which an unlocking part 5 is connected. The unlocking device 4 can drive the unlocking part 5 to move along the direction of the latch 353 away from the insertion hole 9. When the moving device 3 drives the protective cover 2 to move, it can also drive the protective cover 2 to move relative to the lifting platform 1 between a second position and a third position.

[0068] The unlocking part 5 is provided with a first slot 11, and a baffle 13 is provided at the outer end of the locking pin 353. When the moving device 3 drives the protective cover 2 to the third position, the locking pin 353 is just inserted into the first slot 11. At this time, the baffle 13 is located on the side of the unlocking part 5 away from the mounting part 20. By using the unlocking device 4 to drive the unlocking part 5 to move in the direction that the locking pin 353 leaves the insertion hole 9, the locking pin 353 can be pulled away from the insertion hole 9, thereby removing the protective cover 2.

[0069] With this setup, there's no need for manual unlocking of the elastic latch 35, making operation much more convenient.

[0070] The unlocking device 4 can be a pneumatic claw, and the unlocking part 5 consists of two strip plates. The two unlocking parts 5 are respectively connected to the two claws of the pneumatic claw. The first slot 11 is located at the end of the unlocking part 5 away from the unlocking device 4. After the locking pins 353 on both sides of the protective cover 2 are inserted into the first slots 11 on the two unlocking parts 5, when the pneumatic claw drives its two claws to move away from each other, the two unlocking parts 5 move away from each other and away from the insertion hole 9. During the movement, the two unlocking parts 5 push the corresponding baffle 13 away from the insertion hole 9, thereby driving the locking pins 353 to leave the insertion hole 9.

[0071] In other embodiments, such as Figure 12 As shown, the moving device 3 also includes a baffle 6. The baffle 6 is telescopically connected to the mounting block 34, allowing it to switch between an extended and retracted state. A second slot 12 is provided on the latch 353. When the latch 353 is inserted into the insertion hole 9 and the baffle 6 is extended, the baffle 6 is inserted into the second slot 12 to prevent the latch 353 from leaving the insertion hole 9. This arrangement prevents the protective cover 2 from detaching from the mounting block 34 during movement.

[0072] When it is necessary to remove the protective cover 2, retract the baffle 6 to the retracted state. At this time, the baffle 6 is away from the second slot 12, and the baffle 6 loses its limiting function on the locking pin 353. The locking pin 353 can then be removed from the insertion hole 9. Apply force to pull the locking pin 353 out of the insertion hole 9 to remove the protective cover 2.

[0073] Specifically, a guide hole 18 is vertically provided on the mounting block 34, and a guide post 17 is provided on the top of the baffle 6. The guide post 17 is slidably inserted into the guide hole 18. The top of the baffle 6 is connected to the mounting block 34 through an elastic element 19. The elastic element 19 can be a spring. Under the action of the spring force, the baffle 6 is in the extended state. By applying force to overcome the spring force and pushing the baffle 6, the baffle 6 can be moved close to the mounting block 34 and moved to the retracted state. At this time, the baffle 6 leaves the second slot 12.

[0074] In an optional embodiment, the welding protection device further includes a cleaning device 7. The cleaning device 7 is mounted on the frame. When the protective cover 2 moves to the second position and is at the second height, the cleaning device 7 can clean the inside of the protective cover 2, removing the welding slag inside. After cleaning, the next welding operation can proceed.

[0075] With this setup, there is no need for manual cleaning of the protective cover 2, making operation more convenient.

[0076] Furthermore, such as Figures 14 to 15As shown, the cleaning device 7 includes: a housing 71, a brush wheel 72, a drive unit, a dust collection box 73, and a negative pressure dust removal device. The housing 71 is connected to the frame, the brush wheel 72 is rotatably disposed inside the housing 71, and the drive unit is connected to the housing 71 and connected to the brush wheel 72. The drive unit can be a third motor, which drives the brush wheel 72 to rotate.

[0077] A top opening 21 is provided on the top surface of the housing 71, and a side opening 22 is provided on the side of the housing 71. The top opening 21 and the side opening 22 are connected. When the protective cover 2 moves to the second position and is at the second height, the protective cover 2 passes through the top opening 21 and the side opening 22 and enters the interior of the housing 71, contacting the brush wheel 72. At this time, the driving device can drive the brush wheel 72 to rotate, and the brush wheel 72 can clean the protective cover 2. The cleaned welding slag falls into the housing 71. The brush at the top of the brush wheel 72 should be higher than the bottom of the protective cover 2 to ensure that the brush wheel 72 can clean the interior of the protective cover 2.

[0078] The rotation direction of the brush wheel 72 can be perpendicular to the length direction of the protective cover 2 to ensure better cleaning effect.

[0079] A dust discharge port 14 is provided at the bottom of the housing 71, and a dust discharge box 73 is connected to the bottom of the housing 71, communicating with the interior of the housing 71 through the dust discharge port 14. A negative pressure dust removal device is connected to the interior of the dust discharge box 73 via a pipeline. After the cleaned welding slag falls into the housing 71, it enters the dust discharge box 73 through the dust discharge port 14. The negative pressure dust removal device generates negative pressure, creating a negative pressure inside the dust discharge box 73, thereby sucking out the welding slag that has entered the dust discharge box 73. The negative pressure dust removal device is a commonly used negative pressure device, so it will not be described in detail.

[0080] In a further embodiment, such as Figure 15 As shown, the width inside the housing 71 decreases from top to bottom, thus forming a V-shaped groove inside the housing 71. After the welding slag falls into the housing 71, it is easier to fall to the bottom of the housing 71 along the V-shaped groove.

[0081] The width of the dust collection box 73 decreases from top to bottom, thus forming a V-shape inside the dust collection box 73, which facilitates the flow of welding slag.

[0082] In optional embodiments, such as Figures 14 to 15 As shown, the welding protection device also includes a lifting device 15, which is connected to the frame. The housing 71 of the cleaning device 7 is connected to the lifting device 15. The lifting device 15 can drive the cleaning device 7 to move up and down between a third height and a fourth height, with the fourth height being lower than the third height. When the cleaning device 7 is at the fourth height, it is below the protective cover 2, which is located at the second position and the second height. When the lifting device 15 drives the cleaning device 7 to rise to the third height, the cleaning device 7 can clean the inside of the protective cover 2.

[0083] Under normal conditions, the cleaning device 7 can be maintained at the third height. When it is necessary to remove the protective cover 2, the cleaning device 7 can be lowered to the fourth height for easy disassembly. The lifting device 15 can be a cylinder for lifting.

[0084] In a combined embodiment, such as Figure 3 As shown, a lifting device 15, a cleaning device 7, and an unlocking device 4 are all provided. When the protective cover 2 moves to the second position and is at the second height, the cleaning device 7 is used to clean the protective cover 2. After cleaning, the next welding can be performed. When it is necessary to remove the protective cover 2, the lifting device 15 is used to lower the cleaning device 7 to the fourth height, providing space for the protective cover 2 to move and avoid interference. At this time, after the protective cover 2 moves to the second position from the second height, it can continue to move to the third position. When the protective cover 2 moves to the third position, the locking pins 353 on both sides of the protective cover 2 are precisely inserted into the first locking slots 11 on the two unlocking parts 5, respectively. Thus, the unlocking device 4 can drive the locking pins 353 away from the insertion hole 9, thereby removing the protective cover 2. After reinstalling the protective cover 2, the protective cover 2 is moved back to the second position, and the cyclic welding operation can continue.

[0085] In some embodiments, such as Figures 1 to 3 As shown, the welding protection device also includes a dust extraction device 16. The dust extraction device 16 is installed on the lifting platform 1 and is connected to the inside of the protective cover 2 through a pipeline. The dust extraction device 16 can be used to extract the inside of the protective cover 2 and can directly extract some of the welding slag.

[0086] It is worth noting that the first motor 83, the second motor 331, the third motor, the pneumatic gripper, and the cylinder, among other servo drive devices, can all be connected to the control module. Using the control module, the corresponding servo drive device can be driven to perform operations, making operation more convenient.

[0087] According to an embodiment of this application, another aspect provides a battery production module including any of the welding protection devices mentioned above.

[0088] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A welding protection device, characterized in that, include: A lifting platform (1), a moving device (3), and a protective cover (2) are provided. The moving device (3) is connected to the lifting platform (1), and the protective cover (2) is connected to the moving device (3). The lifting platform (1) is adapted to drive the moving device (3) to rise and fall, so as to drive the protective cover (2) to rise and fall between a first height and a second height higher than the first height; The moving device (3) is adapted to drive the protective cover (2) to move relative to the lifting platform (1) between a first position and a second position. When the protective cover (2) is in the first position and at the first height, the protective cover (2) covers the welding point of the battery cell (23). When the protective cover (2) is in the second position and at the second height, the protective cover (2) is away from the top of the battery cell (23).

2. The welding protection device according to claim 1, characterized in that, The mobile device (3) includes: Guide rail (31) is connected to the lifting platform (1); The slider (32) is slidably mounted on the guide rail (31), and the protective cover (2) is connected to the slider (32); A drive assembly (33) is connected to the lifting platform (1) and to the protective cover (2). The drive assembly (33) is adapted to drive the protective cover (2) and the slider (32) to slide along the guide rail (31) so that the protective cover (2) moves between the first position and the second position.

3. The welding protection device according to claim 2, characterized in that, The mobile device (3) also includes: Mounting block (34), the slider (32) is connected to the mounting block (34), the driving component (33) is connected to the mounting block (34), and mounting parts (20) are respectively provided on both sides of the mounting block (34); The elastic locking pin (35) includes a housing (351), an elastic element (352), and a locking pin (353) slidably passing through the housing (351). The housing (351) is connected to the mounting part (20), and the locking pin (353) is connected to the housing (351) through the elastic element (352). At least two elastic locking pins (35) are provided on each mounting part (20). Insertion holes (9) are provided on both sides of the protective cover (2). The locking pins (353) are inserted into the insertion holes (9) one by one to connect the protective cover (2) to the mounting block (34). The direction in which the locking pins (353) leave the insertion holes (9) is consistent with the compression direction of the elastic element (352).

4. The welding protection device according to claim 3, characterized in that, Also includes: The unlocking device (4) is connected to an unlocking part (5), and the unlocking part (5) is provided with a first slot (11). The moving device (3) is also adapted to drive the protective cover (2) to move relative to the lifting platform (1) between the second position and the third position. When the protective cover (2) is in the third position and at the second height, the locking pin (353) is engaged in the first slot (11). The unlocking device (4) is adapted to drive the unlocking part (5) to move along the direction in which the locking pin (353) leaves the insertion hole (9) so as to drive the locking pin (353) to leave the insertion hole (9).

5. The welding protection device according to claim 3, characterized in that, The mobile device (3) also includes: A baffle (6) is telescopically connected to the mounting block (34). A second slot (12) is provided on the latch (353). When the latch (353) is inserted into the insertion hole (9) and the baffle (6) is in the extended state, the baffle (6) is inserted into the second slot (12) and restricts the latch (353) from leaving the insertion hole (9). When the baffle (6) is in the retracted state, the baffle (6) leaves the second slot (12) and the latch (353) can leave the insertion hole (9).

6. The welding protection device according to claim 1, characterized in that, Also includes: A cleaning device (7) is provided on the moving path of the protective cover (2), and the cleaning device (7) is adapted to clean the inside of the protective cover (2) located at the second position and at the second height.

7. The welding protection device according to claim 6, characterized in that, The cleaning device (7) includes: The housing (71) has a top opening (21) and a side opening (22) on its top and side surfaces, respectively, for the protective cover (2) to pass through. The brush wheel (72) is rotatably connected inside the housing (71). When the protective cover (2) is in the second position and at the second height, the protective cover (2) passes through the top opening (21) and the side opening (22) into the housing (71) and contacts the brush wheel (72). A driving device for driving the brush wheel (72) to rotate; A dust collection box (73) is connected to the bottom of the housing (71), and the interior of the dust collection box (73) is in communication with the interior of the housing (71); The negative pressure dust removal device is connected to the inside of the dust discharge box (73).

8. The welding protection device according to claim 7, characterized in that, The width inside the housing (71) decreases from top to bottom, and the width inside the dust collection box (73) decreases from top to bottom.

9. The welding protection device according to claim 6, characterized in that, Also includes: A lifting device (15) is connected to the cleaning device (7). The lifting device (15) is adapted to drive the cleaning device (7) to rise and fall between a third height and a fourth height below the third height. When the cleaning device (7) is at the third height, it is able to clean the inside of the protective cover (2) located at the second position and the second height.

10. A battery production module, characterized in that, include: The welding protection device according to any one of claims 1-9.

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