Battery welding assembly

Abstract

The utility model discloses a battery welding assembly, which comprises a welding mechanism, a welding mechanism, a welding mechanism and a welding mechanism, the welding device comprises a welding mechanism, a supporting frame, a welding cavity structure and a welding downward-pressing driving piece, the welding mechanism is connected to the upper portion of the supporting frame, and the welding downward-pressing driving piece is used for driving the welding cavity structure to ascend and descend relative to the supporting frame; the advanced downward pressing mechanism is connected to the welding cavity structure, and the advanced downward pressing mechanism comprises an advanced downward pressing driving piece; and the pressing block mechanism comprises a pressing block assembly, and the welding downward pressing driving piece and the advanced downward pressing driving piece are suitable for applying downward pressing force for pressing the electrode lug to the pressing block assembly in sequence. According to the battery welding assembly provided by the embodiment of the utility model, a battery tab is prevented from being sucked into the pressing block component before the battery is welded, so that the welding quality is ensured, the number of used motors is reduced, the cost is reduced, and the structure is simple and reliable.

Description

Technical Field

[0001] This utility model relates to the field of battery welding technology, and in particular to a battery welding assembly. Background Technology

[0002] In related technologies, existing battery welding mechanisms often result in the battery tabs being sucked into the pressure block before welding, leading to poor welding quality, complex structure, the use of multiple motors, and high cost. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery welding assembly that ensures that the battery tabs are not sucked into the pressing assembly before welding, thereby guaranteeing welding quality, reducing the number of motors used, lowering costs, and featuring a simple and reliable structure.

[0004] A battery welding assembly according to an embodiment of the present invention includes: a welding mechanism, the welding mechanism including a welding machine; a support frame, a welding cavity structure, and a welding pressing drive, the welding mechanism being connected above the support frame, the welding pressing drive being used to drive the welding cavity structure to rise and fall relative to the support frame; a pre-pressing mechanism, the pre-pressing mechanism being connected to the welding cavity structure, the pre-pressing mechanism including a pre-pressing drive; and a pressing block mechanism, the pressing block mechanism including a pressing block assembly, the welding pressing drive and the pre-pressing drive being adapted to sequentially apply downward pressure toward the pressing block assembly to press against the tab.

[0005] According to the battery welding assembly of this utility model embodiment, by setting a pre-pressing mechanism, the negative pressure inside the pressing block assembly will not act on the tabs during the preparation work before welding, and the tabs will not be sucked into the pressing block assembly, thereby ensuring the welding quality. At the same time, after welding, a negative pressure can exist inside the pressing block assembly, and when the pressing block assembly is separated from the tabs, it can better suck away the welding slag, thereby improving the welding quality, reducing the number of motors used, reducing costs, and making the structure simple and reliable.

[0006] According to some embodiments of the present invention, the battery welding assembly includes a pressing mechanism that further includes a pressing mounting base connected to the lower part of the support frame. The pressing assembly is vertically mounted on the pressing mounting base, and the pressing mounting base is equipped with a pressing drive member. The pressing drive member is used to apply a lifting force to the pressing assembly. The welding pressing drive member and the pre-pressing drive member are adapted to overcome the lifting force of the pressing drive member to drive the pressing assembly to move downward.

[0007] According to some embodiments of the present invention, in the battery welding assembly, the pressure block mounting base is connected to the support frame via a rotary drive mechanism; the pressure block assembly consists of at least two sets, and the rotary drive mechanism is used to drive the pressure block mounting base to rotate and position any one of the at least two sets of pressure block assemblies above the electrode tab.

[0008] According to some embodiments of the present invention, in the battery welding assembly, the welding pressing drive, the advance pressing drive, and the pressing block drive are all configured as driving cylinders; wherein, when the downward stroke of the advance pressing drive is less than a set stroke, the downward force of the advance pressing drive is greater than the upward force of the pressing block drive, and when the downward stroke of the advance pressing drive is greater than the set stroke, the downward force of the advance pressing drive is less than the upward force of the pressing block drive.

[0009] According to some embodiments of the present invention, a battery welding assembly is provided in which a welding cavity is formed within the welding cavity structure. The top of the welding cavity is provided with a light-transmitting opening and the bottom is provided with a welding port. The light-transmitting opening is located above the welding machine, and the welding port is located above the tab. The welding machine is adapted to weld the tab from top to bottom through the welding cavity.

[0010] According to some embodiments of the present invention, the battery welding assembly has a welding cavity structure connected to a duct, the duct being used to connect the welding cavity to an external dust removal device; and / or, the welding cavity structure has a cavity bottom plate configured as the bottom wall of the welding cavity, and a first protective airflow channel is formed within the cavity bottom plate.

[0011] According to some embodiments of the present invention, the battery welding assembly of the pre-pressing mechanism further includes a pre-pressing plate, which is connected to the welding cavity structure via the pre-pressing drive member. The pre-pressing drive member is adapted to push the pre-pressing plate to apply downward pressure to the pressure block assembly.

[0012] According to some embodiments of the present invention, the bottom of the welding cavity structure is provided with a sealing gasket, and when the welding pressing drive drives the welding cavity structure to move downward, the sealing gasket presses against the pressing block assembly.

[0013] According to some embodiments of the present invention, the battery welding assembly includes an upper pressure plate and a lower pressure plate, and a second protective airflow channel is formed between the upper pressure plate and the lower pressure plate.

[0014] According to some embodiments of the present invention, the battery welding assembly further includes a lifting structure connected above the support frame, and the welding machine is vertically mounted on the lifting structure.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the battery welding assembly according to an embodiment of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the battery welding assembly according to an embodiment of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the welding mechanism according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the pressing mechanism and the rotary drive mechanism according to an embodiment of the present utility model;

[0021] Figure 5 This is a structural schematic diagram of the support frame according to an embodiment of the present utility model;

[0022] Figure 6 This is a cross-sectional view of the welding cavity structure according to an embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the welding cavity structure according to an embodiment of the present utility model. Figure 1 ;

[0024] Figure 8 This is a schematic diagram of the welding cavity structure according to an embodiment of the present utility model. Figure 2 ;

[0025] Figure 9 This is a structural schematic diagram of the pre-pressurization drive component according to an embodiment of the present utility model;

[0026] Figure 10 This is a structural schematic diagram of the pressing block assembly according to an embodiment of the present utility model.

[0027] Figure label:

[0028] Battery welding assembly 100,

[0029] Welding mechanism 1, welding machine 11, lifting structure 12,

[0030] Support frame 2, welded downward driving component 21,

[0031] 3. Welded cavity structure; 31. Welded cavity; 32. Air duct; 33. Slide rail; 34. Slider; 35. Cavity base plate; 351. Air pipe connector; 36. Sealing gasket.

[0032] Pre-pressing mechanism 4, pre-pressing drive component 41, pre-pressing plate 42.

[0033] The components include: a pressing mechanism 5, a pressing assembly 51, an upper pressing plate 511, a lower pressing plate 512, a pressing mounting plate 513, a pressing mounting base 52, a pressing fixing plate 521, a support pin 5211, a positioning pin 5212, and a pressing drive component 53.

[0034] Electrode 6, rotary drive mechanism 71. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The following is for reference. Figures 1-10The battery welding assembly 100 according to an embodiment of the present utility model is described. The battery welding assembly 100 can ensure that the battery tabs 6 are not sucked into the pressure block assembly 51 before welding the battery, thereby ensuring the welding quality, reducing the number of motors used, reducing costs, and having a simple and reliable structure.

[0039] like Figures 1-10 As shown, a battery welding assembly 100 according to an embodiment of the present invention includes: a welding mechanism 1, a support frame 2, a welding cavity structure 3, a welding pressing drive 21, a pre-pressing mechanism 4, and a pressing block mechanism 5.

[0040] It should be noted that before welding tab 6 and the battery cover, tab 6 needs to be pressed flat onto the cover first, and then welding can be performed.

[0041] The welding mechanism 1 includes a welding machine 11, which mainly welds the battery tabs 6 and the battery cover plate. The height of the welding mechanism 1 can be changed to flexibly adjust the height of the welding head, ensuring the stability and efficiency of the welding process.

[0042] The support frame 2, the welding cavity structure 3, and the welding pressure drive 21 are provided. The welding mechanism 1 is connected above the support frame 2, and the welding pressure drive 21 is used to drive the welding cavity structure 3 to rise and fall relative to the support frame 2.

[0043] Specifically, the support frame 2 is mainly used to fix, support, and connect various mechanisms to secure the welding mechanism 1, welding cavity structure 3, pressing mechanism 5, and welding pressing drive component 21 together, thereby providing stable support and installation foundation for the battery welding assembly 100 and ensuring the overall stability of the battery welding assembly 100 during the welding process. Figure 1 and Figure 2 As shown, the welding mechanism 1 is connected above the support frame 2 to ensure a smooth welding process. The welding cavity structure 3 is hollow inside and connected below the support frame 2. The welding pressure drive 21 is connected to the support frame 2 and serves as the power source for the battery welding assembly 100. It is mainly used to provide downward pressure for the pressure block mechanism 5 to contact the electrode tab 6 during welding. In practice, when the welding pressure drive 21 is activated, it drives the welding cavity structure 3 to move up and down relative to the support frame 2, thereby flexibly adjusting the height of the welding cavity structure 3 to smoothly achieve the welding process.

[0044] Furthermore, the pre-pressing mechanism 4 is connected to the welding cavity structure 3, and the pre-pressing mechanism 4 includes a pre-pressing drive component 41.

[0045] Specifically, the pre-pressing drive 4 is used to drive the pre-pressing mechanism 4 to move. The pre-pressing mechanism 4 can press down onto the pressure block assembly 51 in advance. When the welding pressing drive 21 drives the welding cavity structure 3 to move up and down relative to the support frame 2, the pre-pressing mechanism 4 can move up and down together with the welding cavity structure 3. The downward pressure provided by the welding pressing drive 21 can act on the pre-pressing drive 41 to drive the pre-pressing drive 41 to move.

[0046] Furthermore, the pressing mechanism 5 includes a pressing assembly 51, and a welding pressing drive 21 and a pre-pressing drive 41 are adapted to apply downward pressure toward the tab 6 to the pressing assembly 51 in sequence.

[0047] Specifically, the pressing mechanism 5 is connected to the support frame 2 to ensure the installation stability of the pressing mechanism 5. The pressing mechanism 5 includes a pressing assembly 51, which is used to directly apply pressure to the tab 6 so that the tab 6 and the cover plate are tightly pressed together. In practice, the welding pressing drive 21 first applies downward pressure to the pressing block assembly 51, pressing it toward the tab 6. The welding pressing drive 21 drives the welding cavity structure 3 to descend. Then, the advance pressing drive 41 applies downward pressure to the pressing block assembly 51, pressing it toward the tab 6. The advance pressing mechanism 4 presses down on the pressing block assembly 51. At this moment, when the advance pressing mechanism 4 presses down, there is no negative pressure gas inside the pressing block assembly 51, thus preventing the lower surface of the pressing block assembly 51 from contacting the tab 6 due to a large negative pressure, which would suck the tab 6 into the pressing block assembly 51 and cause poor welding misalignment. Afterward, the welding pressing drive 21 continues to apply downward pressure to make the tab 6 and the battery cover completely and tightly contact and compact it. Finally, welding is performed. After welding is completed, at the moment when the advance pressing mechanism 4 is lifted and the pressing block assembly 5 separates from the tab 6, there can be a negative pressure inside the pressing block assembly 51 to suck away the welding slag and improve the welding quality.

[0048] Therefore, by setting the pre-pressing mechanism 4, the negative pressure inside the pressure block assembly 51 will not act on the tab 6 during the preparation work before welding, and the tab 6 will not be sucked into the pressure block assembly 51, thus ensuring the welding quality. At the same time, after welding, there can be a negative pressure inside the pressure block assembly 51. When the pressure block assembly 51 is separated from the tab 6, it can better suck away the welding slag, thereby improving the welding quality.

[0049] In addition, by driving the pre-pressurization drive 41 to move by welding the pressure-down drive 21, the number of motors used is reduced, the cost is lowered, and it is easy to use. Since the welding mechanism 1 is connected above the support frame 2, vertical downward welding is achieved, which does not occupy the space in the direction of battery movement. The welding machine 11 does not need to make any obstacles, thus improving the battery welding efficiency.

[0050] According to the battery welding assembly 100 of this utility model embodiment, by setting a pre-pressing mechanism 4, the negative pressure inside the pressing block assembly 51 will not act on the tab 6 during the preparation work before welding, and the tab 6 will not be sucked into the pressing block assembly 51, thereby ensuring the welding quality. At the same time, after welding, the negative pressure can exist inside the pressing block assembly 51, and when the pressing block assembly 51 is separated from the tab 6, it can better suck away the welding slag, thereby improving the welding quality, reducing the number of motors used, reducing costs, and making the structure simple and reliable.

[0051] In some embodiments, such as Figure 1 As shown, the pressing mechanism 5 also includes a pressing mounting base 52, which is used to fix and install the pressing assembly 51. The pressing mounting base 52 is connected to the lower part of the support frame 2. The pressing assembly 51 is installed on the pressing mounting base 52 in a lifting manner, that is, the pressing assembly 51 can be lifted relative to the pressing mounting base 52 to achieve contact and pressing of the electrode tab 6. The pressing mounting base 52 is equipped with a pressing drive member 53, which is used to apply a lifting force to the pressing assembly 51. In this way, the pressing drive member 53 can provide power to the pressing assembly 51 to ensure that the pressing assembly 51 can rise to a suitable height, thereby facilitating the separation of the pressing assembly 51 from the electrode tab 6 for the next process.

[0052] Furthermore, the welding pressing drive 21 and the pre-pressing drive 41 are adapted to overcome the upward force of the pressing block drive 53 to drive the pressing block assembly 51 to move downward.

[0053] In other words, during the preparatory work before welding, when pressing the battery cover plate and the tab 6 together, the welding pressing drive 21 and the pre-pressing drive 41 apply downward pressure to the pressing block assembly 51 respectively. The downward pressure applied by the welding pressing drive 21 and the pre-pressing drive 41 is greater than the upward force of the pressing block drive 53, so that the pressing block assembly 51 can move downward to make close contact with the tab 6 and press the tab 6 tightly with the battery cover plate, thereby completing the preparatory work before welding.

[0054] Therefore, by setting up the pressure block drive component 53, the preparatory work before welding is effectively guaranteed, and the flexibility of the battery welding assembly 100 is increased.

[0055] In some embodiments, the pressure block mounting base 52 is connected to the support frame 2 via a rotary drive mechanism 71, that is, the pressure block mounting base 52 can be rotated relative to the support frame 2 via the rotary drive mechanism 71.

[0056] There are at least two sets of pressure block components 51, that is, the pressure block components 51 can be set to two, three or more sets. Setting multiple pressure block components 51 can ensure that if one pressure block component 51 is damaged and cannot continue to be used, the other pressure block components 51 can be used as backups. There is no need to frequently disassemble and replace the pressure block components 51, thereby avoiding the interruption of the welding process, effectively ensuring the smoothness of the welding process, and improving welding efficiency.

[0057] Furthermore, the rotary drive mechanism 71 is used to drive the clamping block mounting base 52 to rotate and position any one of the at least two sets of clamping block assemblies 51 above the tab 6. That is, the rotary drive mechanism 71 is a power source that can provide power to drive the clamping block mounting base 52 to rotate so that any one of the at least two sets of clamping block assemblies 51 is precisely positioned above the tab 6, thereby ensuring that the tab 6 can smoothly contact the clamping block assembly 51, realizing the switching of multiple clamping block assemblies 51, ensuring the stability and quality of the welding process, and thus improving the performance and reliability of the battery.

[0058] Specifically, such as Figure 4 As shown, in practical design, the rotary drive mechanism 71 can be constructed as a DD motor. Figure 7 Taking the example of setting two pressure block assemblies 51, the two pressure block assemblies 51 are installed on the pressure block mounting base 52. The pressure block mounting base 52 is connected to the rotary drive mechanism 71. The rotary drive mechanism 71 is connected to the support frame 2 and is located below the support frame 2.

[0059] And such as Figure 5 As shown, the support frame 2 includes three side uprights and one horizontal plate. A welded downward pressure drive component 21 is connected to the right side upright, as shown below. Figure 8 As shown, the welding cavity structure 3 also includes a slide rail 33 and a slider 34. The slider 34 is connected to the other two side plates. The welding cavity structure 3 can achieve stable lifting and lowering movement through the sliding cooperation between the slide rail 33 and the slider 34.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the welding pressing drive 21, the pre-pressing drive 41, and the pressing block drive 53 are all constructed as driving cylinders. The driving cylinders have a simple structure, low cost, are easy to control, respond quickly, and operate stably, which can effectively ensure the normal operation of the battery welding assembly 100, thereby ensuring the welding quality.

[0061] It should be noted that the traditional battery welding assembly 100 controls the movement of the pressure block component 51 by motor torque, while this utility model controls it by cylinder pressure. The control method is simpler and more reliable, reduces the number of parts, and has a simpler structure.

[0062] Specifically, when the downward stroke of the pre-pressing drive 41 is less than the set stroke, the downward force of the pre-pressing drive 41 is greater than the upward force of the pressing block drive 53. That is to say, the set stroke is the movement stroke for pressing the tab 6. At the beginning, when the pre-pressing drive 41 moves downward, the pre-pressing mechanism 4 and the pressing block assembly 51 are not in complete contact. Then, when it continues to move downward and the downward stroke of the pre-pressing drive 41 does not reach the movement stroke for pressing the tab 6, the downward force of the pre-pressing drive 41 is greater than the upward force of the pressing block drive 53. Then, the pre-pressing drive 41 can continue to move downward and apply downward force to the pressing block assembly 51. At the same time, the pressing block drive 53 is compressed, and the pressing block assembly 51 moves downward so that the pressing block assembly 51 can contact the tab 6.

[0063] When the downward stroke of the pre-pressing drive 41 is greater than the set stroke, the downward force of the pre-pressing drive 41 is less than the upward force of the pressing block drive 53. That is to say, when the pre-pressing drive 41 moves downward to reach the movement stroke of pressing the tab 6, the pressing block assembly 51 contacts the tab 6 and the tab 6 is tightly pressed against the battery cover. At this time, the pressing block assembly 51 cannot continue to move downward after contacting the tab 6. The pre-pressing drive 41 is compressed by the welded pressing drive 21, and the pre-pressing mechanism 4 is in complete contact with the pressing block assembly 51. After that, when the downward stroke of the pre-pressing drive 41 is greater than the movement stroke of pressing the tab 6, the downward force of the pre-pressing drive 41 decreases and becomes less than the upward force of the pressing block drive 53. At this time, the pressing block drive 53 can move upward to drive the pressing block assembly 51 to move upward.

[0064] In some embodiments, such as Figure 6 As shown, the welding cavity structure 3 is hollow to form a welding cavity 31. The top of the welding cavity 31 has a light-transmitting opening and the bottom has a welding port. The light-transmitting opening is located above the welding machine 11, allowing the welding laser of the welding machine 11 to pass through and facilitating observation of the welding area. The welding port is located above the electrode tab 6, thus facilitating the welding machine 11 to weld the electrode tab 6 to the cover plate through the welding port.

[0065] The welding machine 11 is suitable for welding the tab 6 from top to bottom through the welding cavity 31. That is, the laser of the welding machine 11 can pass through the welding port from the light transmission port and irradiate the tab 6 to weld the tab 6, ensuring that the welding is feasible and improving the welding quality.

[0066] In some embodiments, such as Figures 6-8 As shown, the welding cavity structure 3 is connected to a duct 32. The duct 32 is located on the side of the pre-pressurization drive component 41. The duct 32 is used to connect the welding cavity 31 to an external dust removal device. The air outlet of the duct 32 faces upward, which facilitates connection with the dust removal device.

[0067] Because the welding cavity structure 3 is hollow and fluid simulation has been performed, a strong negative pressure will be formed inside the cavity 31 during welding. Therefore, by connecting the welding cavity 31 to an external dust removal device, the dust removal device can quickly remove the welding slag during welding, thereby ensuring the welding quality and preventing damage to the welding machine 11 lens caused by welding spatter, which greatly improves the welding quality.

[0068] In other embodiments, such as Figure 7 As shown, the welding cavity structure 3 has a cavity base plate 35 that is configured as the bottom wall of the welding cavity 31. The cavity base plate 35 can protect and support the welding cavity structure 3. A first protective gas flow channel is formed inside the cavity base plate 35. The first protective gas flow channel is connected to a gas pipe connector 351 installed on the cavity base plate 35, so that the protective gas can be delivered to the first protective gas flow channel through the gas pipe connector 351, thereby ensuring the welding quality.

[0069] In some embodiments, such as Figure 9 As shown, the pre-pressing mechanism 4 also includes a pre-pressing plate 42, which is connected to the welding cavity structure 3 via a pre-pressing drive member 41. In this way, the pre-pressing drive member can provide power to the pre-pressing plate 42 to drive the pre-pressing plate 42 to move up and down.

[0070] Furthermore, the advance pressure drive 41 is adapted to push the advance pressure plate 42 to apply downward pressure to the pressure block assembly 51.

[0071] In other words, during the preparation work before welding, the pre-press drive 41 can drive the pre-press plate 42 to move downward to apply downward pressure to the pressure block assembly 51, so that the upper surface of the pressure block assembly 51 can contact the pre-press plate 42 and the lower surface of the pressure block assembly 51 can contact the tab 6.

[0072] In some embodiments, such as Figure 7 As shown, a sealing gasket 36 is provided at the bottom of the welding cavity structure 3. The sealing gasket 36 is used to seal the welding cavity structure 3 to prevent gases, welding slag, etc. generated during the welding process from leaking to the outside of the welding cavity. In actual design, the sealing gasket 36 can be made of high-temperature resistant and wear-resistant materials to ensure its stability and reliability during the welding process.

[0073] Furthermore, when the welding pressing drive 21 drives the welding cavity structure 3 to move downward, the sealing gasket 36 presses against the pressure block assembly 51.

[0074] Specifically, when the welding pressing drive 21 initially applies downward pressure to drive the welding cavity structure 3 downward, there is a gap between the sealing gasket 36 and the upper surface of the pressure block assembly 51, resulting in incomplete contact. However, when the welding pressing drive 21 continues to apply downward pressure until the lower surface of the pressure block assembly 51 contacts the tab 6 and the pressure block assembly 51 can no longer descend, the welding pressing drive 21 drives the welding cavity structure 3 to continue moving downward, causing the sealing gasket 36 to press tightly against the upper surface of the pressure block assembly 51. Thus, the gap between the upper surface of the pressure block assembly 51 and the sealing gasket 36 is eliminated, ensuring close contact between the pressure block assembly 51 and the tab 6.

[0075] In some embodiments, such as Figure 10 As shown, the pressing block assembly 51 includes a pressing block assembly 51 and a lower pressing plate 512. A pressing block mounting plate 513 is located between the pressing block assembly 51 and the lower pressing plate 512. The pressing block mounting plate 513 is used to mount the pressing block assembly 51 onto the pressing block fixing plate 521 of the pressing block mounting base 52, thereby achieving a stable connection between the pressing block mounting base 52 and the pressing block assembly 51. For example... Figure 4 As shown, the pressure block fixing plate 521 is provided with a support pin 5211 and a positioning pin 5212. The support pin 5211 and the positioning pin 5212 can ensure a precise and stable connection between the pressure block fixing plate 521 and the pressure block mounting plate 513.

[0076] Furthermore, a second protective gas flow channel is formed between the pressure block assembly 51 and the lower pressure plate 512 to deliver protective gas to the bottom of the lower pressure plate 512, thereby forming a protective surface during welding and ensuring welding quality.

[0077] In practice, when the welding pressing drive 21 applies downward pressure to the pressure block assembly 51 to press against the tab 6, firstly, the welding cavity structure 3 moves downward, and the pre-pressing drive 41 drives the pressing plate 512 to contact the pressure block mounting plate 513. There is a gap between the pressure block assembly 51 and the sealing gasket 36. Then, the welding pressing drive 21 continues to apply downward pressure. The downward pressure applied by the pre-pressing drive 41 is greater than the upward force of the pressure block drive 53, and the pressure block drive 53 is pressed out, thereby driving the pressure block. As component 51 moves downward, the lower pressure plate 512 comes into contact with the tab 6. At this time, the tab 6 and the cover plate are tightly pressed together. Finally, the welding pressure drive 21 continues to apply downward pressure. The lower pressure plate 512 comes into contact with the tab 6 and can no longer move downward. At this time, the pre-pressing drive 41 is compressed by the pressure applied by the welding pressure drive 21. The welding pressure drive 21 drives the welding cavity structure 3 to continue to move downward, so that the sealing gasket 36 is tightly pressed against the pressure block component 51, ensuring that the lower pressure plate 512 of the pressure block component 51 and the tab 6 are in close contact.

[0078] In some embodiments, such as Figure 1 As shown, the welding mechanism 1 also includes a lifting structure 12, which is connected above the support frame 2. The welding machine 11 is mounted on the lifting structure 12 in a lifting manner. The lifting structure 12 can be used to drive the welding machine 11 to move up and down, thereby adjusting the height of the welding head of the welding machine 11, making the welding process more efficient and convenient, and improving welding efficiency.

[0079] In some other embodiments, the side of the pressure block assembly 51 is provided with an opening, thereby maximizing the air flow rate inside the pressure block assembly 51 without removing the protective gas at the bottom of the assembly, thus better removing the welding slag, and also cooling the pressure block assembly 51.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery welding assembly, characterized in that, include: Welding mechanism, the welding mechanism including welding machine; The assembly includes a support frame, a welding cavity structure, and a welding pressing drive. The welding mechanism is connected above the support frame, and the welding pressing drive is used to drive the welding cavity structure to move up and down relative to the support frame. An advance pressing mechanism is connected to the welding cavity structure, and the advance pressing mechanism includes an advance pressing drive component; A pressing mechanism, comprising a pressing assembly, wherein the welding pressing drive and the pre-pressing drive are adapted to apply downward pressure toward the tab to the pressing assembly in sequence.

2. The battery welding assembly according to claim 1, characterized in that, The pressing mechanism further includes a pressing block mounting base, which is connected to the lower part of the support frame. The pressing block assembly is vertically mounted on the pressing block mounting base, and the pressing block mounting base is equipped with a pressing block driving component, which is used to apply a lifting force to the pressing block assembly. The welding pressing drive and the pre-pressing drive are adapted to overcome the upward force of the pressing block drive to drive the pressing block assembly to move downward.

3. The battery welding assembly according to claim 2, characterized in that, The pressure block mounting base is connected to the support frame via a rotary drive mechanism; The pressure block assembly comprises at least two sets, and the rotary drive mechanism is used to drive the pressure block mounting base to rotate and position any one of the at least two sets of pressure block assemblies above the electrode tab.

4. The battery welding assembly according to claim 2, characterized in that, The welding pressing drive, the pre-pressing drive, and the pressing block drive are all constructed as driving cylinders; Specifically, when the downward stroke of the pre-pressing drive member is less than the set stroke, the downward force of the pre-pressing drive member is greater than the upward force of the pressing block drive member; and when the downward stroke of the pre-pressing drive member is greater than the set stroke, the downward force of the pre-pressing drive member is less than the upward force of the pressing block drive member.

5. The battery welding assembly according to any one of claims 1-4, characterized in that, The welding cavity structure has a welding cavity, the top of which has a light-transmitting opening and the bottom has a welding port. The light-transmitting opening is located above the welding machine, and the welding port is located above the electrode tab. The welding machine is adapted to weld the electrode tab from top to bottom through the welding cavity.

6. The battery welding assembly according to claim 5, characterized in that, The welded cavity structure is connected to a duct, which is used to connect the welded cavity to an external dust removal device. And / or, the welding cavity structure has a cavity bottom plate configured as the bottom wall of the welding cavity, and a first protective airflow channel is formed in the cavity bottom plate.

7. The battery welding assembly according to any one of claims 1-4, characterized in that, The pre-pressing mechanism further includes a pre-pressing plate, which is connected to the welding cavity structure via the pre-pressing drive member. The pre-pressing drive member is adapted to push the pre-pressing plate to apply downward pressure to the pressure block assembly.

8. The battery welding assembly according to any one of claims 1-4, characterized in that, The bottom of the welding cavity structure is provided with a sealing gasket. When the welding pressing drive drives the welding cavity structure to move downward, the sealing gasket presses against the pressure block assembly.

9. The battery welding assembly according to any one of claims 1-4, characterized in that, The pressure block assembly includes an upper pressure plate and a lower pressure plate, and a second protective airflow channel is formed between the upper pressure plate and the lower pressure plate.

10. The battery welding assembly according to any one of claims 1-4, characterized in that, The welding mechanism further includes a lifting structure connected above the support frame, and the welding machine is mounted on the lifting structure in a lifting manner.

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