Battery production line and battery production method

Abstract

The application discloses a battery production line and a battery production method, relates to the technical field of battery manufacturing, and is used for reducing the number of welding devices, controlling the cost, and the like. The battery production line comprises a conveying line and a welding device. The conveying line is used for conveying a first workpiece, a second workpiece and a third workpiece along a first direction. The first workpiece comprises oppositely arranged first and second electric connection parts. The first electric connection part is arranged on the second workpiece, and the second electric connection part is arranged on the third workpiece. The welding device comprises two welding assemblies. The two welding assemblies are arranged on a conveying path of the conveying line. The two welding assemblies comprise a first welding assembly and a second welding assembly. When the first workpiece, the second workpiece and the third workpiece are conveyed to the welding device, the first welding assembly is used for welding the first electric connection part and the second workpiece, and the second welding assembly is used for welding the second electric connection part and the third workpiece. The first direction is the width direction of the conveying line. The battery production line is used for producing a battery.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery production line and a battery manufacturing method. Background Technology

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] The production process of battery cells involves welding between various components within the battery cell, so solving the welding problem is one of the current research topics. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a battery production line and a battery production method, which reduces the number of welding devices and controls costs.

[0005] This application is achieved through the following technical solution.

[0006] The first aspect of this application provides a battery production line, which includes a conveyor line and a welding device. The conveyor line is used to transport a first workpiece, a second workpiece, and a third workpiece. Along a first direction, the first workpiece includes a first electrical connection portion and a second electrical connection portion disposed opposite to each other. The first electrical connection portion rests on the second workpiece, and the second electrical connection portion rests on the third workpiece. The welding device includes two welding assemblies, both of which are disposed along the transport path of the conveyor line. The two welding assemblies include a first welding assembly and a second welding assembly. When the first workpiece, the second workpiece, and the third workpiece are transported to the welding device, the first welding assembly is used to weld the first electrical connection portion and the second workpiece, and the second welding assembly is used to weld the second electrical connection portion and the third workpiece. The first direction is the width direction of the conveyor line.

[0007] In the technical solution of this application embodiment, the first workpiece includes a first electrical connection part and a second electrical connection part disposed opposite to each other. The first electrical connection part rests on the second workpiece, and the second electrical connection part rests on the third workpiece, so that the first electrical connection part and the second workpiece, the second electrical connection part and the third workpiece are in a state to be welded.

[0008] Since the first, second, and third workpieces are all located on the conveyor line, they can move along with the conveyor line. When the first, second, and third workpieces are transferred to the welding station corresponding to the welding device, the first welding assembly can weld the first electrical connection and the second workpiece, and the second welding assembly can weld the second electrical connection and the third workpiece, thereby completing the welding operation. Because two welding assemblies can be simultaneously installed at one welding station of the welding device to respectively complete the welding of the second workpiece and the first electrical connection, and the third workpiece and the second electrical connection, the number of welding devices can be reduced, and costs can be controlled.

[0009] In some embodiments of this application, the first welding assembly and the second welding assembly are disposed opposite to each other on both sides of the conveyor line along the first direction; or, the first welding assembly and the second welding assembly are disposed sequentially along the transmission direction of the conveyor line.

[0010] With this configuration, along the first direction, when the first welding assembly and the second welding assembly are positioned opposite each other, the two welding assemblies can perform welding on their respective sides. That is, the first welding assembly can weld the second workpiece and the first electrical connection on its side, and the second welding assembly can weld the third workpiece and the second electrical connection on its side. This allows the welding drilling of the first welding assembly and the welding operation of the second welding assembly to be performed simultaneously, improving welding efficiency. Alternatively, when the first and second welding assemblies are sequentially positioned along the conveyor line's transport direction, when the first, second, and third workpieces are transported to the upstream welding assembly, this assembly can first weld the second workpiece and the first electrical connection. Then, when the first, second, and third workpieces are transported to the downstream welding assembly, this assembly can then weld the third workpiece and the second electrical connection. This also efficiently completes the welding of the second workpiece and the first electrical connection, and the third workpiece and the second electrical connection.

[0011] In some embodiments of this application, each welding assembly includes: a welding frame, a welding component, a pressing component, and a pressing drive component; the welding component is connected to the welding frame and is located above the conveyor line along a second direction; the pressing component is slidably disposed on the welding frame and located above the conveyor line along the second direction; the pressing drive component is connected to the pressing component and is used to drive the pressing component to move; when the first workpiece, the second workpiece, and the third workpiece are transferred to the first welding assembly, the welding component of the first welding assembly is used to weld the first electrical connection portion and the second workpiece, and the pressing component of the first welding assembly is used to press along the second direction to fix the first electrical connection portion and the second workpiece before welding them; when the first workpiece, the second workpiece, and the third workpiece are transferred to the second welding assembly, the welding component of the second welding assembly is used to weld the second electrical connection portion and the third workpiece, and the pressing component of the second welding assembly is used to press along the second direction to fix the second electrical connection portion and the third workpiece before welding them; wherein, the second direction is the height direction of the conveyor line.

[0012] With this configuration, the pressing member of the first welding assembly can press the overlapping position of the first electrical connection and the second workpiece along the second direction to fix the first electrical connection and the second workpiece, ensuring their relative stability. Then, the welding component of the first welding assembly is used for welding to ensure welding accuracy. Similarly, the pressing member of the second welding assembly can press the overlapping position of the second electrical connection and the third workpiece along the second direction to fix the second electrical connection and the third workpiece, ensuring their relative stability. Then, the welding component of the second welding assembly is used for welding to ensure welding accuracy.

[0013] In some embodiments of this application, the welding apparatus further includes a replacement component, which is connected to the welding component. The replacement component includes a material rack, a gripping mechanism, and a gripping drive. Along a first direction, the material rack is located on one side of the welding frame and is used to store unused pressing parts and to recycle used pressing parts. The gripping mechanism is located between the welding component and the replacement component and can move between the material rack and the welding frame under the drive of the gripping drive. The gripping mechanism is used to grip the pressing parts.

[0014] This setup allows for the replacement of pressing components on the material rack after a pressing operation. Specifically, the gripping mechanism picks up the pressed component at the welding frame, then moves to the material rack and places it there. The gripping mechanism then picks up any unpressed pressing components from the rack and moves back to the welding frame, allowing new pressing components to slide onto it. By replacing pressing components, when they become unusable due to welding slag, the quality of the welding is ensured.

[0015] In some embodiments of this application, the battery production line further includes a dust removal device, which is located downstream of the welding device along the transmission direction of the conveyor line. The dust removal device includes two dust removal components, which are located on the transmission path of the conveyor line. Along a first direction, the two dust removal components are arranged opposite to each other. When the first workpiece, the second workpiece, and the third workpiece are transmitted to the dust removal components, one dust removal component is located on the side where the first electrical connection is located and is used to remove dust from the weld seam of the first electrical connection and the second workpiece. The other dust removal component is located on the side where the second electrical connection is located and is used to remove dust from the weld seam of the second electrical connection and the third workpiece.

[0016] With this setup, after the welding process is completed, the support component is transferred to the dust removal assembly. One dust removal assembly removes dust from the weld seams of the first electrical connection and the second workpiece, while another dust removal assembly removes dust from the weld seams of the second electrical connection and the third workpiece. The dust removal operation can improve the smoothness of the weld surface and prevent stress concentration in the weld. Completing dust removal through a single dust removal station ensures high dust removal efficiency.

[0017] In some embodiments of this application, each dust removal component includes: a dust removal frame, a dust removal carrier, a cleaning component, and a dust removal drive component. The dust removal carrier is slidably disposed on the dust removal frame along a second direction; the cleaning component is movably disposed on the dust removal carrier and is located above the conveyor line along the second direction; the dust removal drive component is connected to the dust removal carrier and is used to drive the dust removal carrier to move; wherein, the second direction is the height direction of the conveyor line.

[0018] With this setup, after the welding operation is performed, the dust removal drive unit drives the dust removal carrier and the cleaning unit together to move away from the conveyor line along the second direction. Then, the first workpiece, the second workpiece, and the third workpiece are transferred to the area below the cleaning unit. Next, the dust removal drive unit drives the dust removal carrier and the cleaning unit together to move closer to the conveyor line along the second direction. When the cleaning unit comes into contact with the weld, the cleaning unit cleans the weld slag at the weld. Through the lifting and lowering movement of the cleaning unit along the second direction, it is ensured that the cleaning unit does not interfere with the first, second, and third workpieces before cleaning, and that the cleaning unit contacts the weld during cleaning, thus ensuring the cleaning effect.

[0019] In some embodiments of this application, each dust removal component further includes: a dust removal hood and a negative pressure section. The dust removal hood is disposed on the dust removal carrier and has an opening facing the conveyor line in a second direction. The cleaning component is at least partially movably disposed inside the dust removal hood. The negative pressure section communicates with the interior of the dust removal hood and is used to suck out welding slag.

[0020] With this setup, when the cleaning component performs the cleaning operation, the dust cover first covers the weld seam, then the cleaning component moves to sweep away the welding slag. At this time, the dust cover can block the welding slag from splashing. Then, the negative pressure part sucks out the welding slag from the dust cover, so as to achieve a better effect of removing welding slag from the weld seam.

[0021] In some embodiments of this application, the cleaning component includes: a first cleaning support, a first cleaning drive, a second cleaning drive, and a brush body. Along the transmission direction of the conveyor line, the first cleaning support is slidably disposed on the dust removal support, and the first cleaning drive is connected to the first cleaning support for driving the first cleaning support to move. The brush body and the second cleaning drive are disposed on the first cleaning support, and the brush body is movably disposed on the first cleaning support around the transmission direction of the conveyor line. The second cleaning drive is connected to the brush body for driving the brush body to rotate or swing.

[0022] With this configuration, when the cleaning component performs the cleaning operation, the brush body rotates or swings under the drive of the second cleaning drive unit to remove welding slag, while the first cleaning carrier moves along the transmission direction of the conveyor line under the drive of the first cleaning drive unit. This achieves a combination of the rotation or swinging motion of the brush body and the translational motion, thus improving the cleaning effect.

[0023] In some embodiments of this application, each dust removal component further includes a dust removal hood disposed on the dust removal carrier; the cleaning component further includes a second cleaning carrier and a third cleaning drive. Along the second direction, the second cleaning carrier is slidably disposed on the first cleaning carrier, the brush body and the second cleaning drive are disposed on the second cleaning carrier, and the brush body is located inside the dust removal hood; the third cleaning drive is connected to the second cleaning carrier and is used to drive the second cleaning carrier to move.

[0024] With this configuration, the brush body and the second cleaning drive unit are located on the second cleaning support unit, which is located on the first cleaning support unit. This allows for a combination of rotation, oscillation, and translation of the brush body within the dust collection hood. Furthermore, when the brush body needs cleaning, the third cleaning drive unit can drive the second cleaning support unit to descend along the second direction, bringing the brush body into contact with the weld. After cleaning, in addition to using the dust collection support unit to move the cleaning unit and the dust collection unit upwards as a whole, the third cleaning drive unit can also drive the second cleaning support unit to rise along the second direction, allowing the brush body to fully enter the dust collection hood. At this point, driving the brush body to move again can perform self-cleaning of the brush body, reducing contamination from the brush body.

[0025] In some embodiments of this application, the battery production line further includes an adhesive applicator, which is located downstream of the welding device along the conveying direction of the conveyor line. The adhesive applicator includes an adhesive applicator frame and a plurality of adhesive applicators, which are movably mounted on the adhesive applicator frame and located above the conveyor line along a second direction. The adhesive applicators are used to absorb or release adhesive. The plurality of adhesive applicators include a first adhesive applicator and a second adhesive applicator, which are arranged at intervals along a first direction. When the first workpiece, the second workpiece, and the third workpiece are conveyed to the adhesive applicator, the first adhesive applicator is used to release the adhesive on it to bond the weld seam of the first electrical connection and the second workpiece. The second adhesive applicator is used to release the adhesive on it to bond the weld seam of the second electrical connection and the third workpiece. The second direction is the height direction of the conveyor line.

[0026] With this setup, after the welding process is completed, the first, second, and third workpieces are transferred to the adhesive application unit. Since the first and second adhesive application units are arranged alternately along the first direction, the first adhesive application unit can release its adhesive to bond the weld between the first electrical connection and the second workpiece, and the second adhesive application unit can release its adhesive to bond the weld between the second electrical connection and the third workpiece. The adhesive enhances the strength of the weld joint and prevents corrosion of the weld by liquids or gases. The inclusion of the first and second adhesive application units improves the efficiency of the adhesive application process.

[0027] In some embodiments of this application, the adhesive applicator further includes an adhesive supply component, a first adhesive applicator support component, and a first adhesive applicator drive component. Along a first direction, the adhesive supply component and the adhesive applicator frame are respectively disposed on opposite sides of the conveyor line. The adhesive supply component is used to provide adhesive. The first adhesive applicator support component is connected to the adhesive applicator frame and is slidable between an adsorption position and a release position along the first direction. The adhesive applicator is movably connected to the first adhesive applicator support component. The first adhesive applicator drive component is connected to the first adhesive applicator support component and is used to drive the first adhesive applicator support component to move. In the adsorption position, the first adhesive applicator support component is located at the adhesive supply component and is used to adsorb adhesive. The second adhesive applicator support component is located at the adhesive supply component and is used to adsorb adhesive. In the release position, the first adhesive applicator support component is used to release the adhesive on it to bond the weld between the first electrical connection part and the second workpiece. The second adhesive applicator support component is used to release the adhesive on it to bond the weld between the second electrical connection part and the third workpiece.

[0028] With this configuration, the adhesive supply component can provide adhesive to the adhesive application component. Specifically, the first adhesive application carrier first moves the adhesive application component to the adsorption position along the first direction. At the adsorption position, the first adhesive application component is located on the adhesive supply component and adsorbs the adhesive. At the same time, the second adhesive application component is located on the adhesive supply component and adsorbs the adhesive. Then, the first adhesive application carrier moves the adhesive application component to the release position along the second direction. At this time, the first adhesive application component releases the adhesive on it to bond the weld between the first electrical connection part and the second workpiece. The second adhesive application component releases the adhesive on it to bond the weld between the second electrical connection part and the third workpiece. This improves the intelligence of adhesive supply and application and increases the efficiency of adhesive application.

[0029] In some embodiments of this application, the arrangement order of the first adhesive component and the second adhesive component along the first direction is the opposite of the arrangement order of the first electrical connection portion and the second electrical connection portion.

[0030] With this configuration, since the arrangement order of the first and second adhesive components is opposite to that of the first and second electrical connections, during adhesive application, the first and second adhesive components are first moved to the release position along with the first adhesive carrier in the first direction. In the release position, the first adhesive component is positioned above the first electrical connection and the second workpiece. At this time, the second adhesive component will be offset from the first electrical connection and the second workpiece in the first direction, thus preventing the second adhesive component from interfering with the first and second workpieces. Then, the second adhesive component is positioned above the second electrical connection and the third workpiece. At this time, the first adhesive component will be offset from the second electrical connection and the third workpiece in the first direction, thus preventing the first adhesive component from interfering with the first and second workpieces. This adhesive application operation is easier to perform.

[0031] In some embodiments of this application, the adhesive supply component includes an adhesive supply frame, an adhesive clamping part, an adhesive clamping drive part, an adhesive pressing part, and an adhesive pressing drive part. The adhesive supply frame is used to hold the film roll, which can rotate around a first direction. Along the transmission direction of the conveyor line, the adhesive clamping part is located on one side of the film roll and slidably disposed on the adhesive supply frame. The adhesive clamping part is used to clamp the tape head of the film roll. The adhesive clamping drive part is connected to the adhesive clamping part and is used to drive the adhesive clamping part to move. Along the second direction, the adhesive pressing part is slidably disposed on the adhesive supply frame and is used to slide to press and tighten the pulled-out tape. The adhesive pressing drive part is connected to the adhesive pressing part and is used to drive the adhesive pressing part to move. At the adsorption position, along the transmission direction of the conveyor line, both the first adhesive applicator and the second adhesive applicator are located above the tape between the adhesive pressing part and the adhesive clamping part.

[0032] With this configuration, the clamping part can pull out a section of tape from the roll along the conveyor line's transmission direction, while the pressing part can press it onto that section of tape along a second direction, so that the tape between the pressing part and the clamping part is in a taut state. At this time, when the first adhesive-bearing carrier is in the adsorption position, the first adhesive-bearing component and the second adhesive-bearing component will simultaneously be located above the taut portion of tape between the pressing part and the clamping part. The first adhesive-bearing component and the second adhesive-bearing component can complete the adsorption of the adhesive to complete the adhesive supply. This configuration can improve the automation design of adhesive supply and adhesion, enhance the level of intelligence, and the pressing part can increase the probability of successful adhesive adsorption by the first adhesive-bearing component and the second adhesive-bearing component.

[0033] In some embodiments of this application, there are two adhesive supply components, which are arranged sequentially along the transmission direction of the conveyor line. In the first direction, one adhesive supply component is located on the movement path of the first adhesive application carrier.

[0034] With this setup, one glue supply component can work with the glue applicator on the first glue applicator to complete the glue supply, while the other glue supply component serves as a backup. This redundancy in the glue supply components ensures the efficiency of replacing the glue supply components and guarantees the production efficiency of the production line.

[0035] In some embodiments of this application, the first workpiece further includes a housing and an electrode assembly. The housing is sleeved on the outside of the electrode assembly. Along the first direction, the first electrical connection portion and the second electrical connection portion are respectively connected to opposite sides of the electrode assembly and both extend out of the housing. The battery production line further includes a positioning device. Along the transmission direction of the conveyor line, the positioning device is located upstream of the welding device. The positioning device includes a positioning frame, a first positioning member, a second positioning member, and a positioning drive member. Along the first direction, the first positioning member and the second positioning member are arranged opposite to each other and are slidably disposed on the positioning frame. When the first workpiece, the second workpiece, and the third workpiece are transmitted to the positioning device, the first positioning member and the second positioning member move towards each other along the first direction under the drive of the positioning drive member to clamp the electrode assembly, or move away from each other along the first direction to release the electrode assembly.

[0036] With this setup, before the welding operation is performed, the first, second, and third workpieces are first transferred to the positioning device. At this time, the electrode assembly is located between the first and second positioning members. Along the first direction, the first and second positioning members clamp the electrode assembly to position it. By positioning the electrode assembly along the first direction, the distance between the electrode assembly and the second and third workpieces is kept appropriate, and the first electrical connection part on the electrode assembly is positioned appropriately on the second workpiece, and the second electrical connection part is positioned appropriately on the third workpiece, so as to ensure the smooth completion of subsequent welding operations and improve welding accuracy.

[0037] In some embodiments of this application, the first positioning member includes a positioning support portion, a positioning portion, and an elastic portion. Along the first direction, the positioning support portion is slidably disposed on the positioning frame. Along the first direction, the positioning portion is movably disposed on the positioning support portion and is opposite to and spaced apart from the second positioning member. The elastic portion is disposed between the positioning portion and the positioning support portion. When the second positioning member and the positioning portion clamp the electrode assembly, and the dimension of the electrode assembly along the first direction is greater than a threshold, the elastic portion undergoes elastic deformation under the reaction of the electrode assembly, and the positioning portion moves relative to the positioning support portion in a direction away from the second positioning member.

[0038] With this configuration, the positioning part and the second positioning member will complete the positioning by clamping the electrode assembly. Since the elastic part undergoes elastic deformation under the reaction of the electrode assembly when the size of the electrode assembly is greater than the threshold along the first direction, the positioning part moves away from the second positioning member relative to the positioning support part. Therefore, hard contact between the positioning part and the electrode assembly can be avoided, reducing the probability of damage to the electrode assembly. It can also be used to position larger electrode assemblies.

[0039] In some embodiments of this application, the battery production line further includes a first feeding device and a second feeding device. The first feeding device and the second feeding device are arranged sequentially along the transmission direction of the conveyor line and are both located upstream of the welding device. The first feeding device includes a first storage component and a first transfer component. The first storage component is used to store a second workpiece. When the support component is transferred to the first feeding device, the first transfer component is used to transfer the second workpiece to the conveyor line. The second feeding device includes a second storage component and a second transfer component. The second storage component is used to store a third workpiece. When the second workpiece is transferred to the second feeding device, the second transfer component is used to transfer the third workpiece to the conveyor line.

[0040] With this setup, before the welding operation is performed, the second workpiece at the first storage unit is transferred to the conveyor line by the first transfer component at the first feeding device. When the second workpiece is transferred to the second feeding device, the third workpiece at the second storage unit is transferred to the conveyor line by the second transfer component, thus completing the feeding of the second and third workpieces. The separate feeding of the second and third workpieces facilitates the actual spatial layout.

[0041] In some embodiments of this application, the first transfer component includes a first transport section, a marking section, and a second transport section. The first transport section is used to transport the second workpiece on the first storage component to the marking section; the marking section is used to mark the second workpiece; and the second transport section is used to transport the marked second workpiece to the conveyor line.

[0042] With this setup, when transferring the second workpiece, the first transport unit first transports the second workpiece from the first storage unit to the marking unit. After marking is completed in the marking unit, the second transport unit then transfers the marked second workpiece to the conveyor line. This completes the marking operation during the loading process of the second workpiece, enabling full lifecycle tracking of the battery.

[0043] In some embodiments of this application, along the second direction, the second workpiece includes a first surface and a second surface opposite to each other. The marking part is used to mark the first surface. Before the marking part marks the first surface, the first surface faces upward along the second direction. The first transfer member also includes a flipping part. After the marking part marks the second surface and before the second transport part transports the workpiece, the flipping part is used to flip the second workpiece so that the second surface faces upward along the second direction. The second surface is used to support the first electrical connection part. The second direction is the height direction of the conveyor line.

[0044] This design allows for marking on the first surface. After marking, the second workpiece is flipped over using the flipping part so that the second surface faces upwards. This facilitates the subsequent placement of the first electrical connection on the second surface, simplifying the welding process. The flipping part facilitates both marking and placement of the first electrical connection.

[0045] In some embodiments of this application, the second transfer component includes a third transport unit, a preliminary positioning mechanism, and a fourth transport unit. The third transport unit is used to transport the third workpiece on the second storage unit to the preliminary positioning mechanism. The preliminary positioning mechanism is used to position the third workpiece along the first direction and the transmission direction of the conveyor line. The fourth transport unit is used to transport the third workpiece after positioning on the preliminary positioning mechanism to the conveyor line.

[0046] With this setup, when transferring the third workpiece, the third transport unit first transports the third workpiece from the second storage unit to the preliminary positioning mechanism. After the preliminary positioning mechanism completes the positioning, the fourth transport unit then transports the positioned third workpiece to the conveyor line. This completes the positioning operation during the loading process of the third workpiece, making it easier to accurately transport the third workpiece to the support component using the third transport unit, thereby improving the accuracy of subsequent welding.

[0047] In some embodiments of this application, the preliminary positioning mechanism includes a support platform, a first protrusion, a second protrusion, a first positioning block, a second positioning block, a first telescopic drive member, and a second telescopic drive member. Along a first direction, the first protrusion and the first positioning block are spaced apart on the support platform, and the first positioning block can move along the first direction under the drive of the first telescopic drive member to approach or move away from the first protrusion. Along the transmission direction of the conveyor line, the second protrusion and the second positioning block are spaced apart on the support platform, and the second positioning block can move along the transmission direction of the conveyor line under the drive of the second telescopic drive member to approach or move away from the first protrusion. The first protrusion, the second protrusion, the first positioning block, and the second positioning block form a positioning space for placing a third workpiece.

[0048] With this setup, when positioning the third workpiece, the third workpiece is first placed in the positioning space. Then, the first positioning block is used to approach the first protrusion along the first direction to clamp the third workpiece between the first protrusion and the first positioning block, thus completing the positioning of the third workpiece in the first direction. In addition, the second positioning block is used to approach the second protrusion along the transmission direction of the conveyor line to clamp the third workpiece between the second protrusion and the second positioning block, thus completing the positioning of the third workpiece along the transmission direction of the conveyor line. After positioning is completed, the third workpiece is released to facilitate subsequent transfer. This positioning method has high positioning accuracy and a simple structure.

[0049] In some embodiments of this application, the battery production line further includes a transfer device located upstream of the welding device along the transmission direction of the conveyor line. The transfer device is used to transfer the first workpiece to the conveyor line.

[0050] With this setup, the transfer device can load the first workpiece before the welding operation, achieving automated loading of the first workpiece and improving loading efficiency.

[0051] In some embodiments of this application, the battery production line further includes a dust removal device, an adhesive application device, a positioning device, a first feeding device, a second feeding device, and a transfer device. Along the transmission direction of the conveyor line, the first feeding device, the second feeding device, the transfer device, the positioning device, the welding device, the dust removal device, and the adhesive application device are sequentially arranged on the transmission path of the conveyor line.

[0052] With this setup, during the transmission process, the second workpiece is loaded at the first loading device, the third workpiece is loaded at the second loading device, the first workpiece is loaded at the transfer device, the electrode assembly inside the first workpiece is positioned at the positioning device, welding is completed at the welding device, dust removal is completed at the dust removal device, and adhesive is applied to the weld seam at the adhesive application device. This automates the battery production process and improves battery production efficiency.

[0053] In some embodiments of the present application, the battery production line further includes: a pre-welding detection device, a post-welding detection device, and a post-gluing detection device. Along the transmission direction of the conveyor line, the pre-welding detection device is disposed between the positioning device and the welding device. When the first workpiece, the second workpiece, and the third workpiece are transmitted to the pre-welding detection device, the pre-welding detection device is used to detect the pre-welding position where the first electrical connection portion is placed on the second workpiece, and is also used to detect the pre-welding position where the second electrical connection portion is placed on the third workpiece. Along the transmission direction of the conveyor line, the post-welding detection device is disposed between the welding device and the gluing device. When the first workpiece, the second workpiece, and the third workpiece are transmitted to the post-welding detection device, the post-welding detection device is used to detect the welding position between the first electrical connection portion and the second workpiece, and is also used to detect the welding position between the second electrical connection portion and the third workpiece. Along the transmission direction of the conveyor line, the post-gluing detection device is disposed after the gluing device. When the first workpiece, the second workpiece, and the third workpiece are transmitted to the post-gluing detection device, the post-gluing detection device is used to detect the gluing position between the first electrical connection portion and the second workpiece, and is also used to detect the gluing position between the second electrical connection portion and the third workpiece.

[0054] With such an arrangement, before performing the welding operation, the pre-welding detection device is first used to detect the pre-welding placement positions of the first electrical connection portion and the second workpiece, and the second electrical connection portion and the third workpiece, so as to ensure the subsequent welding operation. After the welding operation is completed, the post-welding detection device is used to detect the welding positions of the first electrical connection portion and the second workpiece, and the second electrical connection portion and the third workpiece, to determine whether the welding is qualified. Then, after the weld seam is glued, the post-gluing detection device is used to detect the gluing positions of the first electrical connection portion and the second workpiece, and the second electrical connection portion and the third workpiece, to determine whether the gluing is qualified. By setting up multiple detection devices, the whole process monitoring during the battery production process is realized, and the product yield is improved.

[0055] In some embodiments of the present application, along the transmission direction of the conveyor line, the conveyor line includes multiple magnetically driven conveying segments arranged in succession. The first loading device, the second loading device, the transfer device, the positioning device, the welding device, the dust removal device, and the gluing device are at least dispersedly disposed on the transmission paths of two magnetically driven conveying segments.

[0056] With such an arrangement, the conveyor line is composed of multiple magnetically driven conveying segments, which can ensure the transmission efficiency. Since the first loading device, the second loading device, the transfer device, the positioning device, the welding device, the dust removal device, and the gluing device are at least dispersedly disposed on the transmission paths of two magnetically driven conveying segments, when multiple first workpieces, second workpieces, and third workpieces are simultaneously transmitted on one magnetically driven conveying segment, the number of workpieces on the same magnetically driven conveying segment can be dispersed, reducing the possibility of overload of the magnetically driven conveying segment and ensuring the safe operation of the equipment.

[0057] A second aspect of this application provides a battery manufacturing method, applied in a battery production line of any of the above embodiments, the battery manufacturing method comprising:

[0058] Place the first workpiece, the second workpiece, and the third workpiece on the conveyor line;

[0059] Transfer the first workpiece, the second workpiece, and the third workpiece to the welding device;

[0060] The first welding assembly of the welding device welds the first electrical connection portion of the first workpiece and the second workpiece.

[0061] The second welding assembly of the welding device welds the second electrical connection of the first workpiece and the third workpiece.

[0062] In the technical solution of this application embodiment, the first workpiece, the second workpiece, and the third workpiece move along the conveyor line. When the first workpiece, the second workpiece, and the third workpiece are transferred to the welding station corresponding to the welding device, the first welding assembly can weld the first electrical connection and the second workpiece, and the second welding assembly can weld the second electrical connection and the third workpiece, thereby completing the welding operation. By simultaneously setting two welding assemblies at one welding station of the welding device to complete the welding of the second workpiece and the first electrical connection, and the third workpiece and the second electrical connection, welding efficiency can be improved.

[0063] In some embodiments of this application, after the first welding assembly welds the first electrical connection and the second workpiece, and the second welding assembly welds the second electrical connection and the third workpiece, the battery manufacturing method further includes:

[0064] The first workpiece, the second workpiece, and the third workpiece are transferred to the dust removal device;

[0065] The first dust removal component of the dust removal device removes dust from the weld seam of the first electrical connection and the second workpiece;

[0066] The second dust removal component of the dust removal device removes dust from the weld seams of the second electrical connection and the third workpiece.

[0067] With this setup, after the welding process is completed, the first, second, and third workpieces are transferred to the dust removal assembly. The first dust removal assembly removes dust from the weld seams of the first electrical connection and the second workpiece, while the second dust removal assembly removes dust from the weld seams of the second electrical connection and the third workpiece. This dust removal operation improves the smoothness of the weld surface and prevents stress concentration in the weld. Completing dust removal through a single station ensures high dust removal efficiency.

[0068] In some embodiments of this application, after the first welding assembly welds the first electrical connection and the second workpiece, and the second welding assembly welds the second electrical connection and the third workpiece, the battery manufacturing method further includes:

[0069] Transfer the first workpiece, the second workpiece, and the third workpiece to the adhesive application device;

[0070] The first adhesive applicator of the adhesive applicator releases adhesive on it to bond the weld between the first electrical connection and the second workpiece.

[0071] The second adhesive applicator of the adhesive applicator releases adhesive on itself to bond the weld between the second electrical connection and the third workpiece.

[0072] With this setup, after the welding process is completed, the first, second, and third workpieces are transferred to the adhesive application unit. Since the first and second adhesive application units are arranged alternately along the first direction, the first adhesive application unit can release its adhesive to bond the weld between the first electrical connection and the second workpiece, and the second adhesive application unit can release its adhesive to bond the weld between the second electrical connection and the third workpiece. The adhesive enhances the strength of the weld joint and prevents corrosion of the weld by liquids or gases. The inclusion of the first and second adhesive application units improves the efficiency of the adhesive application process.

[0073] In some embodiments of this application, after placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line and before transferring the first workpiece, the second workpiece, and the third workpiece to the welding device, the battery production method further includes:

[0074] Transfer the first workpiece, the second workpiece, and the third workpiece between the first positioning member and the second positioning member;

[0075] The first positioning member and the second positioning member move toward each other along a first direction to clamp the electrode assembly of the first workpiece.

[0076] With this setup, before the welding operation is performed, the first, second, and third workpieces are first transferred to the positioning device. At this time, the electrode assembly is located between the first and second positioning members. Along the first direction, the first and second positioning members clamp the electrode assembly to position it. By positioning the electrode assembly along the first direction, the distance between the electrode assembly and the second and third workpieces is kept appropriate, and the first electrical connection part on the electrode assembly is positioned appropriately on the second workpiece, and the second electrical connection part is positioned appropriately on the third workpiece, so as to ensure the smooth completion of subsequent welding operations and improve welding accuracy.

[0077] In some embodiments of this application, placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line includes:

[0078] The first transfer component of the first feeding device transfers the second workpiece of the first storage component to the conveyor line;

[0079] The conveyor line transports the second workpiece to the second feeding device;

[0080] The second transfer component of the second feeding device transfers the third workpiece from the second storage container to the conveyor line;

[0081] The first workpiece is placed on the conveyor line.

[0082] With this setup, before the welding operation is performed, the second workpiece at the first storage unit is transferred to the support unit using the first transfer component. When the second workpiece is transferred to the second feeding device, the third workpiece at the second storage unit is transferred to the conveyor line using the second transfer component. Finally, the first workpiece is fed, thus completing the feeding of the second, third, and first workpieces. The separate feeding of the second, third, and first workpieces facilitates the actual spatial layout.

[0083] In some embodiments of this application, after placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line, and before transferring the first workpiece, the second workpiece, and the third workpiece to the welding device, the battery production method further includes:

[0084] The first workpiece, the second workpiece, and the third workpiece are transferred to the pre-welding inspection device;

[0085] The pre-welding inspection device detects the pre-welding positions of the first electrical connection and the second workpiece, and also detects the pre-welding positions of the second electrical connection and the third workpiece.

[0086] With this setup, before performing the welding operation, the pre-welding inspection device is used to check the pre-welding overlap positions of the first electrical connection and the second workpiece, as well as the second electrical connection and the third workpiece, thereby ensuring the subsequent welding operation. Attached Figure Description

[0087] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0088] Figure 1 A schematic diagram of a first structure with a welding device on a conveyor line provided in some embodiments of this application;

[0089] Figure 2 A schematic diagram of a second structure with a welding device on a conveyor line provided in some embodiments of this application;

[0090] Figure 3 A schematic diagram of the first external structure of the welding apparatus and dust removal apparatus provided in some embodiments of this application;

[0091] Figure 4A second external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application;

[0092] Figure 5 A third external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application;

[0093] Figure 6 A fourth external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application;

[0094] Figure 7 A fifth external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application;

[0095] Figure 8 A sixth external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application;

[0096] Figure 9 A schematic diagram of a conveyor line having a welding device and a dust removal device, provided for some embodiments of this application;

[0097] Figure 10 for Figure 5 A magnified view of a portion of point A in the middle;

[0098] Figure 11 A schematic diagram of a conveyor line having a welding device, a dust removal device, and an adhesive application device, provided for some embodiments of this application;

[0099] Figure 12 This is a schematic diagram of a first structure of an adhesive applicator provided in some embodiments of this application;

[0100] Figure 13 for Figure 12 A magnified view of a portion of point B in the middle;

[0101] Figure 14 This is a second structural schematic diagram of the adhesive applicator provided in some embodiments of this application;

[0102] Figure 15 This is a schematic diagram of a third structure of the adhesive applicator provided in some embodiments of this application;

[0103] Figure 16 This is a fourth structural schematic diagram of the adhesive applicator provided in some embodiments of this application;

[0104] Figure 17 for Figure 12 A magnified view of a portion of point C in the middle;

[0105] Figure 18A schematic diagram of a conveyor line having a welding device, a dust removal device, an adhesive application device, and a positioning device, provided for some embodiments of this application;

[0106] Figure 19 This is a schematic diagram of the structure of a positioning device provided in some embodiments of this application;

[0107] Figure 20 for Figure 19 A magnified view of a portion of point C in the middle;

[0108] Figure 21 This is a schematic diagram of the structure of the support member provided in some embodiments of this application;

[0109] Figure 22 The following are structural schematic diagrams of a conveyor line having a welding device, a dust removal device, an adhesive application device, a positioning device, a first feeding device, a second feeding device, and a transfer device, provided for some embodiments of this application.

[0110] Figure 23 A first structural schematic diagram of a first feeding device and a second feeding device provided in some embodiments of this application;

[0111] Figure 24 A second structural schematic diagram of the first and second feeding devices provided in some embodiments of this application;

[0112] Figure 25 A third structural schematic diagram of the first feeding device and the second feeding device provided in some embodiments of this application;

[0113] Figure 26 A fourth structural schematic diagram of the first and second feeding devices provided in some embodiments of this application;

[0114] Figure 27 A fifth structural schematic diagram of the first and second feeding devices provided in some embodiments of this application;

[0115] Figure 28 A sixth structural schematic diagram of the first and second feeding devices provided in some embodiments of this application;

[0116] Figure 29 A seventh structural schematic diagram of the first and second feeding devices provided in some embodiments of this application;

[0117] Figure 30 for Figure 26 A magnified view of a portion of point E in the middle;

[0118] Figure 31 This is a schematic diagram of a first structure of a battery production line provided in some embodiments of this application;

[0119] Figure 32 This is a schematic diagram of a second structure of a battery production line provided in some embodiments of this application;

[0120] Figure 33 A third structural schematic diagram of a battery production line provided in some embodiments of this application;

[0121] Figure 34 A fourth structural schematic diagram of a battery production line provided in some embodiments of this application;

[0122] Figure 35 This is a schematic diagram of a first structure of a conveyor line provided in some embodiments of this application;

[0123] Figure 36 This is a schematic diagram of a second structure of a conveyor line provided in some embodiments of this application;

[0124] Figure 37 This is a schematic diagram of a third structure of a conveyor line provided in some embodiments of this application;

[0125] Figure 38 A fourth structural schematic diagram of the conveyor line provided in some embodiments of this application;

[0126] Figure 39 A schematic diagram of a first process for a battery manufacturing method provided in some embodiments of this application;

[0127] Figure 40 This is a schematic diagram of a second process for a battery manufacturing method provided in some embodiments of this application;

[0128] Figure 41 A schematic diagram of a third process for a battery manufacturing method provided in some embodiments of this application;

[0129] Figure 42 A schematic diagram of a fourth process for a battery manufacturing method provided in some embodiments of this application;

[0130] Figure 43 A fifth process diagram illustrating a battery manufacturing method provided in some embodiments of this application;

[0131] Figure 44 A sixth process diagram illustrating a battery manufacturing method provided in some embodiments of this application;

[0132] Figure 45 A seventh process diagram illustrating a battery manufacturing method provided in some embodiments of this application;

[0133] Figure 46 This is an eighth process diagram of a battery manufacturing method provided in some embodiments of this application.

[0134] Explanation of reference numerals in the attached figures

[0135] 100-Conveyor line; 110-Magnetic drive conveyor section; 200-Welding device; 210-Welding assembly; 211-Welding frame; 212-Welded part; 213-Pressing part; 214-Pressing drive part; 215-Welded marble; 216-Welding cover; 217-Welding pipe; 210A-First welding assembly; 210B-Second welding assembly; 220-Replacement assembly; 221-Material rack; 222-Grip drive part; 300-Dust removal device; 310-Dust removal assembly; 311-Dust removal frame; 312-Dust removal carrier; 313-Cleaning part; 3131-First cleaning drive unit; 3132-Second cleaning drive unit; 3133-Third cleaning drive unit; 314-Dust removal drive part; 315-Dust removal cover; 316-Negative pressure unit; 310A-First dust removal component; 310B-Second dust removal component; 400-Adhesive application device; 410-Adhesive application frame; 420-Adhesive application part; 420A-First adhesive application part; 420B-Second adhesive application part; 430-Variable pitch mechanism; 440-Adhesive supply part; 441-Adhesive supply frame; 442-Adhesive clamping part; 443-Adhesive clamping drive part; 444-Adhesive pressing part; 445-Adhesive pressing drive part; 446-Adhesive opening mechanism; 450-First adhesive application support part; 460-First adhesive application drive part; 470-Second adhesive application support part; 480-Second adhesive application drive part; 500-Positioning device; 510-Positioning frame; 520-First positioning part; 521-Positioning support part; 522-Positioning part; 523-Spring 530-Second positioning component; 540-Positioning drive component; 541-First positioning drive unit; 542-Second positioning drive unit; 600-First feeding device; 610-First storage component; 611-First storage unit; 612-First roller conveyor section; 613-First transfer bin; 614-First lifting component; 615-First adsorption and fixing part; 620-First transfer component; 621-First handling part; 622-Engraving part; 6221-Engraving circulation line; 6222-First feeding and scanning module; 6223-Engraved marble; 6224-Laser engraving module; 6225-Engraving and scanning module; 623-Second handling part; 624-Tilting part; 700-Second feeding device; 710-Second storage component 711-Second storage section; 712-Second roller conveyor section; 713-Second transfer bin; 714-Second lifting component; 715-Second adsorption fixing part; 720-Second transfer component; 721-Third handling part; 722-Preliminary positioning mechanism; 7221-First protrusion; 7222-Second protrusion; 7223-First positioning block; 7224-Second positioning block; 7225-First telescopic drive component; 7226-Second telescopic drive component; 723-Fourth handling part; 724-Transfer conveying section; 725-Matching part; 800-Transfer device; 901-Pre-welding inspection device; 902-Post-welding inspection device; 903-Post-adhesion inspection device; 1-Supporting component; 11-First fixing part; 12-Second fixing part;13-Fixed drive component; 14-Placement component; 15-Placement drive component; 2-Workpiece assembly; 21-First workpiece; 2101-Housing; 2102-Electrode assembly; 22-Second workpiece; 23-Third workpiece; 3-Film roll; 4-Blister tray; X-First direction; Y-Second direction; Z-Transmission direction of the conveyor line. Detailed Implementation

[0136] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0137] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0138] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0139] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0140] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0141] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0142] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0143] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0144] The following is a detailed description of this application.

[0145] With the promotion and popularization of the concept of green development, new energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, battery devices are being used more and more in the field of energy storage.

[0146] In the existing manufacturing process of battery cells, a battery cell is generally assembled from a casing, end caps, and electrode components. For battery cells with anode tabs and cathode tabs respectively at opposite ends of the electrode components (such as stacked battery cells), the steps of welding the anode tab to the anode terminal on the end cap at its corresponding end via an anode adapter, welding the cathode tab to the cathode terminal on the end cap at its corresponding end via a cathode adapter, and installing the electrode components into the casing have a significant impact on the production of qualified battery cells.

[0147] In related technologies, the above-mentioned process steps are as follows: the anode tab is welded to the anode terminal on the corresponding end cap via an anode adapter plate; the electrode assembly is installed into the housing; the cathode tab is welded to the cathode terminal on the corresponding end cap via a cathode adapter plate. For a specific battery production line, a first welding device, a housing installation device, and a second welding device are sequentially installed on the battery production line. The first welding device is used to weld the anode adapter plate to the anode terminal on the corresponding end cap; the housing installation device is used to install the electrode assembly into the housing; and the second welding device is used to weld the cathode adapter plate to the cathode terminal on the corresponding end cap.

[0148] However, this process requires welding stations before and after the casing assembly, with one welding device at each station, meaning two welding devices are needed, which increases equipment costs.

[0149] Based on this, this application provides a battery production line, which includes a conveyor line and a welding device. The conveyor line is used to transport a first workpiece, a second workpiece, and a third workpiece. Along a first direction, the first workpiece includes a first electrical connection portion and a second electrical connection portion disposed opposite to each other. The first electrical connection portion rests on the second workpiece, and the second electrical connection portion rests on the third workpiece. The welding device includes two welding assemblies, both of which are disposed along the transport path of the conveyor line. When the first workpiece, the second workpiece, and the third workpiece are transported to the welding device, the first welding assembly is used to weld the first electrical connection portion and the second workpiece, and the second welding assembly is used to weld the second electrical connection portion and the third workpiece. The first direction is the width direction of the conveyor line.

[0150] With the above configuration, the first workpiece includes a first electrical connection part and a second electrical connection part disposed opposite to each other. The first electrical connection part rests on the second workpiece, and the second electrical connection part rests on the third workpiece, thereby placing the first electrical connection part and the second workpiece, the second electrical connection part and the third workpiece in a state to be welded.

[0151] Since the first, second, and third workpieces are all located on the conveyor line, they can move along with the conveyor line. When the first, second, and third workpieces are transferred to the welding station corresponding to the welding device, the first welding assembly can weld the first electrical connection and the second workpiece, and the second welding assembly can weld the second electrical connection and the third workpiece, thereby completing the welding operation. Because two welding assemblies can be simultaneously installed at one welding station of the welding device to respectively complete the welding of the second workpiece and the first electrical connection, and the third workpiece and the second electrical connection, the number of welding devices can be reduced, and costs can be controlled.

[0152] In the case where the first workpiece includes a housing, an electrode assembly, a first electrical connection, and a second electrical connection, the housing is fitted over the outside of the electrode assembly. Along the first direction, the first and second electrical connections are respectively connected to opposite sides of the electrode assembly and extend beyond the housing. Since the electrode assembly is pre-installed into the housing, two welding assemblies can be simultaneously installed at one welding station in the welding apparatus to weld the second workpiece and the first electrical connection, and the third workpiece and the second electrical connection, respectively. This reduces the number of welding devices and controls costs. Furthermore, since the housing installation process is completed before the welding process, the housing installation device can be separated from the battery production line to improve the efficiency of battery production.

[0153] In some embodiments, the battery cells produced by this battery production line are stacked battery cells. Each battery cell includes a casing, an electrode assembly, and two end caps. The casing is a square shell with openings at both ends along its height. The electrode assembly is disposed within the casing and includes a positive electrode, a negative electrode, and a separator. End caps are respectively provided at the two openings. During the charging and discharging process of the battery cell, active ions (e.g., lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator is disposed between the positive and negative electrodes to prevent short circuits while allowing active ions to pass through.

[0154] In some examples, multiple positive and negative electrodes are arranged, and multiple positive and multiple negative electrodes are stacked alternately along the first direction.

[0155] In some examples, multiple positive electrode plates can be provided, and negative electrode plates are folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0156] In some examples, both the positive and negative electrodes are folded to form multiple stacked folded segments.

[0157] In some examples, multiple separators may be provided, each positioned between any adjacent positive or negative electrode plates.

[0158] In some examples, the separators can be arranged continuously, either by folding or rolling between any adjacent positive or negative electrode plates.

[0159] In some examples, the housing can be a steel housing, an aluminum housing, a plastic housing (such as a polypropylene housing), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film, etc.

[0160] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0161] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0162] As an example, the positive current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0163] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium phosphate include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium iron manganese phosphate, and lithium iron manganese phosphate and carbon composites. Examples of lithium transition metal oxides include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, and lithium nickel cobalt manganese oxide (such as LiNi). 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (also known as NCM333), LiNi 0.5 Co 0.2 Mn 0.3 O2 (also known as NCM523), LiNi 0.5 Co 0.25 Mn 0.25 O2 (also known as NCM211), LiNi 0.6 Co 0.2 Mn 0.2 O2 (also known as NCM622), LiNi 0.8 Co 0.1 Mn 0.1 O2 (also known as NCM811), lithium nickel cobalt aluminum oxide (such as LiNi) 0.8 Co 0.15Al 0.05 At least one of O2 and its modified compounds. Modified compounds refer to substances obtained by modification methods such as doping or coating based on the above-mentioned substances.

[0164] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0165] As an example, the negative electrode current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material substrate and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0166] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0167] As an example, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0168] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cells. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials for battery cells may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0169] In some embodiments, the negative electrode can be made of foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, or a foamed alloy, etc. When foamed metal is used as the negative electrode, the surface of the foamed metal may or may not contain a negative electrode active material.

[0170] As an example, negative electrode active materials can be filled or / and deposited within the negative electrode current collector.

[0171] In some embodiments, the positive current collector can be made of aluminum, and the negative current collector can be made of copper.

[0172] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0173] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a single component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes. An inorganic particle coating, an organic particle coating, or an organic / inorganic composite coating can also be applied to the surface of the separator.

[0174] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0175] Below, refer to Figures 1 to 46 Some embodiments of this application will be described in detail.

[0176] Figure 1 This is a schematic diagram of a first structure with a welding device on a conveyor line provided in some embodiments of this application. Figure 2 This is a schematic diagram of a second structure with a welding device on a conveyor line provided in some embodiments of this application. Figure 3 This is a schematic diagram of the first external structure of the welding apparatus and dust removal apparatus provided in some embodiments of this application. Figure 4 This is a second external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application. Figure 5 This is a third external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application. Figure 6 This is a fourth external structural diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application. Figure 7 A fifth external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application. Figure 8 A sixth external structural schematic diagram of the welding apparatus and dust removal apparatus provided in some embodiments of this application. Figure 9 This is a schematic diagram of a conveyor line with a welding device and a dust removal device provided for some embodiments of this application. Figure 10 for Figure 5 A magnified view of a portion of point A in the middle. Figure 11 This is a schematic diagram of a conveyor line having a welding device, a dust removal device, and an adhesive application device, provided for some embodiments of this application. Figure 12This is a schematic diagram of a first structure of an adhesive applicator provided in some embodiments of this application. Figure 13 for Figure 12 A magnified view of a portion of point B in the middle. Figure 14 This is a second structural schematic diagram of the adhesive applicator provided in some embodiments of this application. Figure 15 This is a schematic diagram of a third structure of the adhesive applicator provided in some embodiments of this application. Figure 16 This is a fourth structural schematic diagram of the adhesive applicator provided in some embodiments of this application. Figure 17 for Figure 12 A magnified view of a portion of point C. Figure 18 This is a schematic diagram of the structure of a conveyor line having a welding device, a dust removal device, an adhesive application device, and a positioning device, provided for some embodiments of this application. Figure 19 This is a schematic diagram of the structure of a positioning device provided in some embodiments of this application. Figure 20 for Figure 19 A magnified view of a portion of point C. Figure 21 This is a schematic diagram of the structure of a support member provided in some embodiments of this application. Figure 22 The present application provides structural schematic diagrams of a conveyor line having a welding device, a dust removal device, an adhesive application device, a positioning device, a first feeding device, a second feeding device, and a transfer device, as well as structural schematic diagrams of a first feeding device, a second feeding device, and a transfer device, for some embodiments of the present application. Figure 23 This is a schematic diagram of a first structure of a first feeding device and a second feeding device provided in some embodiments of this application. Figure 24 This is a second structural schematic diagram of a first feeding device and a second feeding device provided in some embodiments of this application. Figure 25 This is a third structural schematic diagram of a first feeding device and a second feeding device provided in some embodiments of this application. Figure 26 A fourth structural schematic diagram of the first feeding device and the second feeding device provided in some embodiments of this application. Figure 27 A fifth structural schematic diagram of the first and second feeding devices provided in some embodiments of this application. Figure 28 A sixth structural schematic diagram of the first and second feeding devices provided in some embodiments of this application. Figure 29 This is a seventh structural schematic diagram of a first feeding device and a second feeding device provided in some embodiments of this application. Figure 30 for Figure 26 A magnified view of a portion of point E in the middle. Figure 31 This is a schematic diagram of a first structure of a battery production line provided in some embodiments of this application. Figure 32 This is a schematic diagram of a second structure of a battery production line provided in some embodiments of this application. Figure 33 This is a schematic diagram of a third structure of a battery production line provided in some embodiments of this application. Figure 34This is a schematic diagram of a fourth structure of a battery production line provided in some embodiments of this application. Figure 35 This is a schematic diagram of a first structure of a conveyor line provided in some embodiments of this application. Figure 36 This is a schematic diagram of a second structure of a conveyor line provided in some embodiments of this application. Figure 37 This is a schematic diagram of a third structure of a conveyor line provided in some embodiments of this application. Figure 38 This is a schematic diagram of a fourth structure of a conveyor line provided in some embodiments of this application. Figure 39 This is a schematic diagram of a first process for a battery manufacturing method provided in some embodiments of this application. Figure 40 This is a schematic diagram of a second process for a battery manufacturing method provided in some embodiments of this application. Figure 41 This is a schematic diagram of a third process for a battery manufacturing method provided in some embodiments of this application. Figure 42 This is a schematic diagram of a fourth process for a battery manufacturing method provided in some embodiments of this application. Figure 43 This is a fifth process diagram illustrating a battery manufacturing method provided in some embodiments of this application. Figure 44 This is a sixth process diagram of a battery manufacturing method provided in some embodiments of this application. Figure 45 This is a seventh process diagram illustrating a battery manufacturing method provided in some embodiments of this application. Figure 46 This is an eighth process diagram of a battery manufacturing method provided in some embodiments of this application.

[0177] To better describe this application, a first direction, a second direction, and a transmission line direction are introduced in this application. The first direction, the second direction, and the transmission line direction intersect each other. The first direction is the width direction of the transmission line and also the height direction of the housing. The second direction is the height direction of the transmission line and also the thickness direction of the housing.

[0178] In some embodiments of this application, such as Figure 1As shown, this application provides a battery production line, which includes a conveyor line 100 and a welding device 200. The conveyor line 100 is used to transport a first workpiece 21, a second workpiece 22, and a third workpiece 23. Along a first direction X, a support member 1 is used to support the first workpiece 21, the second workpiece 22, and the third workpiece 23. A first electrical connection portion rests on the second workpiece 22, and a second electrical connection portion rests on the third workpiece 23. The welding device 200 includes two welding assemblies 210, both of which are located along the transport path of the conveyor line 100. The two welding assemblies 210 include a first welding assembly 210A and a second welding assembly 210B. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transported to the welding device 200, the first welding assembly 210A is used to weld the first electrical connection portion and the second workpiece 22, and the second welding assembly 210B is used to weld the second electrical connection portion and the third workpiece 23. The first direction X is the width direction of the conveyor line 100.

[0179] In some examples, the first workpiece 21, the second workpiece 22, and the third workpiece 23 are all supported on a support member 1, which is mounted on a conveyor line 100. The support member 1 can be transported on the conveyor line 100, thereby realizing the transport of the first workpiece 21, the second workpiece 22, and the third workpiece 23. The support member 1 refers to a component that can perform a load-bearing function; it can also be called a pallet. As needed, clamps or other fixing devices can be installed on the support member 1 to fix the component it supports (e.g., the housing 2101 of the first workpiece 21). The conveyor line 100 can transport multiple support members 1 simultaneously to ensure production efficiency.

[0180] In some examples, the first workpiece 21, the second workpiece 22, and the third workpiece 23 constitute a workpiece assembly 2. Multiple workpiece assemblies 2 can be mounted on a support 1. The multiple workpiece assemblies 2 are arranged sequentially along the conveying direction of the conveyor line 100. When the support 1 is conveyed to the welding device 200, the first welding assembly 210A welds the first electrical connection part and the second workpiece 22 of the multiple workpiece assemblies 2, and the second welding assembly 210B welds the second electrical connection part and the third workpiece 23 of the multiple workpiece assemblies 2. This can improve the production efficiency of the battery.

[0181] For example, a support 1 carries two workpiece assemblies 2, which can ensure the efficiency of battery processing and control the load of the conveyor line 100 within a suitable range to ensure smooth conveying.

[0182] Among them, the conveyor line 100 can be a magnetic levitation conveyor line, a double-speed chain conveyor line, or a flexible chain plate conveyor line, etc.

[0183] For example, the conveyor line 100 is a magnetic levitation conveyor line 100, with a mover on the magnetic levitation conveyor line 100. The mover moves on the magnetic levitation conveyor line 100, and the support member 1 is supported on the mover to move with the mover and realize transmission. Alternatively, the support member 1 itself also functions as a mover and directly transmits on the magnetic levitation conveyor line 100. Utilizing magnetic levitation transmission technology, there is no physical contact between the mover and the conveyor line 100, eliminating mechanical wear, ensuring service life, and also reducing metal particles generated by mechanical wear, thus ensuring the cleanliness of the first workpiece 21, the second workpiece 22, and the third workpiece 23 on the support member 1.

[0184] In addition, when the first workpiece 21, the second workpiece 22, and the third workpiece 23 are placed directly on the conveyor line 100, the first workpiece 21, the second workpiece 22, and the third workpiece 23 need to be placed within a certain range on the conveyor line 100 in order to meet the processing requirements.

[0185] In some examples, the first workpiece 21 further includes a housing 2101 and an electrode assembly 2102. The housing 2101 is sleeved on the outside of the electrode assembly 2102. Along the first direction X, the first electrical connection portion and the second electrical connection portion are respectively connected to opposite sides of the electrode assembly 2102 and both extend out of the housing 2101. The second workpiece 22 is located on the side where the first electrical connection portion is located and on the side where the second electrical connection portion is located.

[0186] It should be explained that the housing 2101 being sleeved on the outside of the electrode assembly 2102 means that the housing 2101 has a sleeve-like structure, that is, along the first direction X, the housing 2101 has openings on opposite sides, the electrode assembly 2102 is accommodated inside the housing 2101, the first electrical connection part on one side of the electrode assembly 2102 extends out of the housing 2101 through the opening at its end, and the second electrical connection part on the other side of the electrode assembly 2102 extends out of the housing 2101 through the opening at its end.

[0187] In some examples, the second workpiece 22 includes a first end cap, the third workpiece 23 includes a second end cap, the first electrical connection includes an anode adapter plate, and the second electrical connection includes a cathode adapter plate. For example, the anode adapter plate and the anode tab on the electrode assembly 2102 are ultrasonically welded together, and then the anode adapter plate can be welded to the anode terminal on the first end cap via a first welding assembly 210A; the cathode adapter plate and the cathode tab on the electrode assembly 2102 are ultrasonically welded together, and then the cathode adapter plate can be welded to the cathode terminal on the second end cap via a second welding assembly 210B. For ease of understanding, this application will subsequently describe the first workpiece 21 as including a housing 2101 and an electrode assembly 2102 as an example.

[0188] The positions of the two welding components 210 of the welding device 200 on the conveyor line 100 can be arbitrary, as long as they can each complete their corresponding welding tasks.

[0189] In some examples, the conveyor line 100 has a first centerline extending along its conveying direction, and the weldment parts 212 of the two welding assemblies 210 are disposed opposite each other on both sides of the first centerline. The two welding assemblies 210 include a first welding assembly 210A and a second welding assembly 210B. Along a first direction X, the weldment part 212 of the first welding assembly 210A is disposed on the side where the first electrical connection is located, and the weldment part 212 of the second welding assembly 210B is disposed on the side where the second electrical connection is located. The first electrical connection and the second workpiece 22 are then welded using the weldment part 212 of the first welding assembly 210A, and the second electrical connection and the third workpiece 23 are welded using the weldment part 212 of the second welding assembly 210B. This allows the weldment parts 212 of the first welding assembly 210A and the weldment parts 212 of the second welding assembly 210B to each perform their respective welding operations nearby.

[0190] For example, the first welding component 210A and the second welding component 210B may both be disposed on the upper side of the conveyor line 100, or the first welding component 210A and the second welding component 210B may be disposed on opposite sides of the conveyor line 100.

[0191] With the above configuration, the first workpiece 21 includes a housing 2101 and an electrode assembly 2102. The housing 2101 is sleeved on the outside of the electrode assembly 2102. The electrode assembly 2102 has a first electrical connection portion on one side and a second electrical connection portion on the other side. The first electrical connection portion rests on the second workpiece 22, and the second electrical connection portion rests on the third workpiece 23, so that the first electrical connection portion and the second workpiece 22, the second electrical connection portion and the third workpiece 23 are in a state to be welded.

[0192] Since the first workpiece 21, the second workpiece 22, and the third workpiece 23 are all located on the conveyor line 100, they can move along with the support member 1. When the support member 1 is transferred to the welding station corresponding to the welding device 200, one welding assembly 210 can weld the first electrical connection and the second workpiece 22, and another welding assembly 210 can weld the second electrical connection and the third workpiece 23, thus completing the welding operation. Since the electrode assembly 2102 has already completed the casing operation, that is, it has been pre-installed into the casing 2101, two welding assemblies 210 can be set up simultaneously at one welding station of the welding device 200 to complete the welding of the second workpiece 22 and the first electrical connection, and the third workpiece 23 and the second electrical connection, respectively. This reduces the number of welding devices 200 and controls costs. In addition, since there is no need to set up a casing device on the battery production line, the production efficiency of the battery production line can be improved.

[0193] The position of the two welding components 210 of the welding device 200 on the conveyor line 100 has a significant impact on the convenience of welding operations. The following is an example of the position of the two welding components 210.

[0194] In some embodiments of this application, such as Figure 1 As shown, along the first direction X, the first welding assembly 210A and the second welding assembly 210B are disposed opposite each other on both sides of the conveyor line 100.

[0195] That is, along the first direction X, a welding assembly 210 is provided on one side of the conveyor line 100, and another welding assembly 210 is provided on the other side of the conveyor line 100, and the two welding assemblies 210 are projected into the same projection plane along the first direction X, with at least partial overlap. For example, along the first direction X, the two welding assemblies 210 are arranged facing each other.

[0196] With the above configuration, since the two welding components 210 are arranged opposite each other along the first direction X, when the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the welding station corresponding to the welding device 200, they will simultaneously reach the positions corresponding to the two welding components 210. Then, the first welding component 210A can weld the first electrical connection part and the second workpiece 22, and the second welding component 210B can weld the second electrical connection part and the third workpiece 23. That is, the two welding operations are performed simultaneously, which improves the welding efficiency and the efficiency of battery production.

[0197] In other embodiments of this application, such as Figure 2 As shown, along the transmission direction of the conveyor line 100, the first welding assembly 210A and the second welding assembly 210B are arranged sequentially.

[0198] It is understood that in this embodiment, the welding components 210 can be located on the same side or different sides of the conveyor line 100, as long as the two welding components 210 are arranged sequentially along the transmission direction of the conveyor line 100. When the two welding components 210 are located on opposite sides of the conveyor line 100, they are also located on opposite sides of the first center line.

[0199] With the above configuration, when the first welding assembly 210A and the second welding assembly 210B are arranged sequentially along the transmission direction of the conveyor line 100, when the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transmitted to the upstream first welding assembly 210A, the first welding assembly 210A can first weld the second workpiece 22 and the first electrical connection part. Then, when the support 1 is transmitted to the downstream second welding assembly 210B, the second welding assembly 210B will weld the third workpiece 23 and the second electrical connection part. In this way, the welding of the second workpiece 22 and the first electrical connection part, the third workpiece 23 and the second electrical connection part can be completed efficiently.

[0200] The structure of the welding assembly 210 itself has a significant impact on the welding efficiency and effect. The specific structure of the welding assembly 210 is described below.

[0201] In some embodiments of this application, such as Figures 3-8 As shown, each welding assembly 210 includes a welding frame 211, a welding component 212, a pressing component 213, and a pressing drive component 214. The welding component 212 is connected to the welding frame 211 and is located above the conveyor line 100 along the second direction Y. Along the second direction Y, the pressing component 213 is slidably disposed on the welding frame 211 and is located above the conveyor line 100. The pressing drive component 214 is connected to the pressing component 213 and is used to drive the pressing component 213 to move. The two welding assemblies 210 include a first welding assembly 210A and a second welding assembly 210B. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the first welding assembly 210A, the welding component 212 of the first welding assembly 210A is used to weld the first electrical connection and the second workpiece 22, and the pressing component 213 of the first welding assembly 210A is used to press along the second direction Y to fix the first electrical connection and the second workpiece 22 before welding them. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the second welding assembly 210B, the welding member 212 of the second welding assembly 210B is used to weld the second electrical connection and the third workpiece 23, and the pressing member 213 of the second welding assembly 210B is used to press along the second direction Y to fix the second electrical connection and the third workpiece 23 before welding them. Here, the second direction Y is the height direction of the conveyor line 100.

[0202] It is understandable that the order in which the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the first welding assembly 210A and the second welding assembly 210B is determined by the sequential positions of the first welding assembly 210A and the second welding assembly 210B on the conveyor line 100. If, along the conveying direction of the conveyor line 100, the first welding assembly 210A is located upstream of the second welding assembly 210B, then the welding element 212 of the first welding assembly 210A is used first to weld the first electrical connection and the second workpiece 22, and then the welding element 212 of the second welding assembly 210B is used to weld the second electrical connection and the third workpiece 23. If, along the conveying direction of the conveyor line 100, the first welding assembly 210A and the second welding assembly 210B are located in the same position range, then the first welding assembly 210A and the second welding assembly 210B perform welding operations simultaneously.

[0203] The welding frame 211 is a component that supports the welded parts 212, the pressing parts 213, and the pressing drive parts 214. For example, the welding frame 211 may be composed of multiple welding support plates.

[0204] Alternatively, the welded component 212 can be a laser-welded structure; for example, it can be a laser-welded structure including a galvanometer. Of course, the welded component 212 can also be welded using a traditional fixed optical path or a robotic arm-driven method. Alternatively, the welded component 212 can also be an ultrasonic welding structure.

[0205] In some examples, the pressing member 213 has a through hole. After the pressing member 213 of the first welding assembly 210A is pressed onto the first electrical connection and the second workpiece 22, the first electrical connection and the second workpiece 22 can be fixed. The through hole exposes the areas of the first electrical connection and the second workpiece 22 that need to be welded in the second direction Y. Then, the welding member 212 of the first welding assembly 210A welds the first electrical connection and the second workpiece 22 through the through hole. Similarly, after the pressing member 213 of the second welding assembly 210B is pressed onto the second electrical connection and the third workpiece 23, the second electrical connection and the third workpiece 23 can be fixed. The through hole exposes the areas of the second electrical connection and the third workpiece 23 that need to be welded in the second direction Y. Then, the welding member 212 of the second welding assembly 210B welds the second electrical connection and the third workpiece 23 through the through hole. In this way, the welding requirements of the welding member 212 are met while achieving fixation using the pressing member 213.

[0206] The pressing member 213 can be a plate-shaped structure with through holes extending along the thickness direction of the plate-shaped structure. The length and width dimensions of the plate-shaped structure match those of the plate-shaped structure in the transmission direction of the conveyor line 100 and in the first direction X, so as to ensure the firmness of the pressing member 213 and at the same time control the size and volume of the pressing member 213.

[0207] Of course, in other examples, the pressing part 213 may not have a through hole, and the pressing area of ​​the pressing part 213 may be set to be small, as long as the basic fixing needs are met. In this case, welding can still be achieved using the welding part 212.

[0208] In some examples, the pressing drive 214 is a telescopic motor, the telescopic shaft of which is connected to the pressing member 213 and extends and retracts along the second direction Y to drive the pressing member 213 to rise and fall. Of course, the pressing drive 214 can also be a telescopic cylinder, the telescopic rod of which is connected to the pressing member 213 and moves along the second direction Y to drive the pressing member 213 to rise and fall.

[0209] In some examples, such as Figures 3-8 As shown, each welding component 210 also includes a welding marble 215. The welding marble 215 is connected to the welding frame 211 and is located near the welding part 212. During the welding process, the welding marble 215 (mainly composed of calcium carbonate) decomposes into carbon dioxide and calcium oxide at high temperature. Carbon dioxide, as a protective gas, can isolate air to prevent metal oxidation in the molten pool and inhibit the intrusion of harmful gases such as nitrogen, thereby improving the quality of the weld.

[0210] In some examples, each welding assembly 210 also includes a ranging mechanism. After the pressing member 213 of the first welding assembly 210A is pressed down, the ranging mechanism of the first welding assembly 210A moves down along the second direction Y under the action of the cylinder. Then, the ranging mechanism of the first welding assembly 210A measures the distance of the first electrical connection to detect whether the first electrical connection is pressed into place and to determine whether the first electrical connection and the second workpiece 22 are securely fixed. After determining that the fixation is secure, the ranging structure is raised along the second direction Y by the cylinder to move away from the workpiece assembly 2. Then, the welding member 212 of the first welding assembly 210A is used to weld the first electrical connection and the second workpiece 22. Similarly, after the pressing member 213 of the second welding assembly 210B is pressed down, the measuring mechanism of the second welding assembly 210B moves downward along the second direction Y under the action of the cylinder. Then, the measuring mechanism of the second welding assembly 210B measures the distance of the second electrical connection to detect whether the second electrical connection is pressed into place, and to determine whether the fixation of the second electrical connection and the third workpiece 23 is secure. After determining that the fixation is secure, the measuring structure is raised along the second direction Y by the cylinder to move away from the workpiece assembly 2. Then, the welding member 212 of the second welding assembly 210B is used to weld the second electrical connection and the third end cap. By setting the measuring mechanism, the pressing member 213 can play a stable fixing role, thereby ensuring the quality of welding.

[0211] In some examples, such as Figures 3-8As shown, each welding assembly 210 also includes a welding cover 216 and a welding pipe 217. The welding cover 216 is connected to the welding frame 211 and located below the welding component. The welding cover 216 covers the circumference of the welding component 212 and avoids the welding component 212 in the second direction Y. One end of the welding pipe 217 is connected to the inside of the welding cover 216, and the other end of the welding pipe 217 is connected to the outside of the welding cover 216. The welding pipe 217 can provide a negative pressure environment inside the welding cover 216. Thus, when the welding component 212 is being welded, the negative pressure environment can reduce the absorption and scattering of laser energy by the metal vapor plume during laser welding, thereby improving the energy utilization rate of the laser and increasing the welding efficiency.

[0212] For example, a negative pressure fan can be installed on the welding pipe 217, and the negative pressure fan provides a negative pressure environment inside the welding cover 216 through the welding pipe 217.

[0213] For example, a strip air knife is provided between the bottom of the weldment 212 and the top of the welding position, and a strip air knife is also provided between the top of the welding cover 216 and the weldment 212. The strip air knife can play a filtering role. During the welding process, when the welding pipe 217 continuously draws out the air in the welding cover 216, the setting of the strip air knife can filter the welding slag, reduce the probability of welding slag splashing onto the weldment 212, and prevent the weldment 212 from being contaminated. The setting of the strip air knife is even more necessary when the weldment 212 includes a galvanometer.

[0214] With the above configuration, the pressing member 213 of the first welding assembly 210A can press the overlapping position of the first electrical connection and the second workpiece 22 along the second direction Y, fixing the first electrical connection and the second workpiece 22 to ensure their relative stability. Then, the welding member 212 of the first welding assembly 210A is used for welding to ensure welding accuracy. Similarly, the pressing member 213 of the second welding assembly 210B can press the overlapping position of the second electrical connection and the third workpiece 23 along the second direction Y, fixing the second electrical connection and the third workpiece 23 to ensure their relative stability. Then, the welding member 212 of the second welding assembly 210B is used for welding to ensure welding accuracy.

[0215] Of course, in other examples, each welding assembly 210 may also include only a welding frame 211 and a welding component 212 connected to the welding frame 211. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the first welding assembly 210A, the welding component 212 of the first welding assembly 210A is used to weld the first electrical connection and the second workpiece 22. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the second welding assembly 210B, the welding component 212 of the second welding assembly 210B is used to weld the second electrical connection and the third workpiece 23.

[0216] During the welding process, the pressing member 213 of the first welding assembly 210A needs to fix the first electrical connection and the second workpiece 22, while ensuring the normal progress of welding. The pressing member 213 of the second welding assembly 210B needs to fix the second electrical connection and the third workpiece 23, while ensuring the normal progress of welding. Therefore, the stable performance of the pressing member 213 has a significant impact on the quality of the weld.

[0217] Therefore, in some embodiments of this application, such as Figures 3-9 As shown, the welding apparatus 200 also includes a replacement component 220, which is connected to the welding assembly 210. The replacement component 220 includes a material rack 221, a gripping mechanism (not shown), and a gripping drive 222. Along the first direction X, the material rack 221 is located on one side of the welding frame 211. The material rack 221 is used to store unused pressing parts 213 and to recycle used pressing parts 213. The gripping mechanism is located between the welding assembly 210 and the replacement component 220, and can move between the material rack 221 and the welding frame 211 under the drive of the gripping drive 222. The gripping mechanism is used to grip the pressing parts 213.

[0218] The replacement component 220 is connected to the welding component 210. It can be located along the transmission direction of the conveyor line 100. The replacement component 220 is at least partially located upstream or downstream of the welding component 210, as long as the replacement component 220 can cooperate with the welding component 210.

[0219] In addition, unused pressing part 213 refers to a pressing part 213 that is undamaged and has no welding slag and is in normal function, while used pressing part 213 refers to a pressing part 213 that is damaged or has welding slag attached to it.

[0220] The replacement of the pressing part 213 can be carried out after pressing a certain number of times, or after using the pressing part 213 for a certain period of time, or when welding slag is detected on the pressing part 213.

[0221] In some examples, there are two replacement components 220, which include a first replacement component and a second replacement component. The first replacement component corresponds to the first welding component 210A and is used to replace the pressing plate in the first welding component 210A. The second replacement component corresponds to the second welding component 210B and is used to replace the pressing plate in the second welding component 210B. This ensures the efficiency of the replacement.

[0222] For example, the racks 221 of the first replacement component and the second replacement component are arranged sequentially along the transmission direction of the conveyor line 100. Both the gripping mechanisms of the first and second replacement components can be transported between the two welding components 210 along the first direction X to replace the pressing member 213 used in the first welding component 210A and the pressing member 213 used in the second welding component 210B, respectively. This arrangement facilitates the centralized arrangement of the two replacement components 220 and improves the structural compactness of the welding device 200.

[0223] In some examples, the rack 221 includes a first rack 221 and a second rack 221 connected together. The first rack 221 is used to store unused pressing parts 213; for example, the first rack 221 may store six unused pressing parts 213 in the second direction Y. The second rack 221 is used to recycle used pressing parts 213; for example, the second rack 221 may recycle in the second direction Y to store six pressing parts 213. Storing unused pressing parts 213 and used pressing parts 213 separately facilitates the gripping or placement by the gripping mechanism.

[0224] In some examples, the gripping mechanism includes two clamping plates and a gripping power unit. Driven by the gripping power unit, the two clamping plates can move towards or away from each other. When the two clamping plates move towards each other, they can grip the pressing member 213; when the two clamping plates move away from each other, they can release the pressing member 213. For example, the gripping power unit can be a bidirectional telescopic motor. Alternatively, the gripping mechanism can be a pneumatic gripper mechanism.

[0225] In some examples, the gripping drive 222 includes a connected movable shaft and a gripping drive unit. The movable shaft is capable of moving along a first direction X, and the gripping drive unit is used to drive the movable shaft to move along the first direction X. The gripping mechanism is connected to the movable shaft and moves between the material rack 221 and the welding frame 211 via the movable shaft. The movable shaft provides a stable connection position for the gripping mechanism, ensuring the stability of the gripping mechanism's movement.

[0226] For example, the gripping drive unit can be a telescopic mechanism (e.g., a telescopic motor or telescopic cylinder), in which the telescopic rod and the moving shaft are coaxially arranged to drive the moving shaft to move. Alternatively, the gripping drive unit can also be a nut screw mechanism, in which the nut and the moving shaft are connected to drive the moving shaft to move.

[0227] With the above setup, after the pressing element 213 on the material rack 221 performs a pressing operation, it can be replaced. Specifically, the gripping mechanism grips the pressing element 213 after the pressing operation at the welding frame 211, then moves to the material rack 221 and places the pressing element 213 on the material rack 221. The gripping mechanism then grips the pressing element 213 on the material rack 221 that has not undergone a pressing operation, and then moves back to the welding frame 211 so that a new pressing element 213 can slide onto the welding frame 211. By replacing the pressing element 213, when it becomes unusable due to welding slag, the quality of the welding is ensured.

[0228] After welding is completed, welding slag will remain at the weld seam, so it is necessary to use a dust removal device 300 to clean the welding slag at the weld seam.

[0229] In some embodiments of this application, such as Figure 9 As shown, the battery production line also includes a dust removal device 300, which is located downstream of the welding device 200 along the conveying direction of the conveyor line 100. The dust removal device 300 includes two dust removal components 310, which are located on the conveying path of the conveyor line 100. Along the first direction X, the two dust removal components 310 are arranged opposite to each other. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are conveyed to the dust removal component 310, one dust removal component 310 is located on the side where the first electrical connection is located and is used to remove dust from the weld seam of the first electrical connection and the second workpiece 22. The other dust removal component 310 is located on the side where the second electrical connection is located and is used to remove dust from the weld seam of the second electrical connection and the third workpiece 23.

[0230] For ease of description, the two dust removal components 310 are defined as a first dust removal component 310A and a second dust removal component 310B. The first dust removal component 310A and the second dust removal component 310B are components with the same structure. The first dust removal component 310A is located on the side where the first electrical connection part is located and is used to remove dust from the weld seam of the first electrical connection part and the second workpiece 22. The second dust removal component 310B is located on the side where the second electrical connection part is located and is used to remove dust from the weld seam of the second electrical connection part and the third workpiece 23.

[0231] In some examples, along the first direction X, the first dust removal component 310A is disposed on one side of the conveyor line 100, and the second dust removal component 310B is disposed on the other side of the conveyor line 100, and both are projected onto the same projection plane along the first direction X. The projections of the first dust removal component 310A and the second dust removal component 310B completely overlap. With this arrangement, when the support 1 is conveyed to the dust removal device 300, the first dust removal component 310A and the second dust removal component 310B can be started synchronously to remove dust from the weld seams of the first electrical connection part and the second workpiece 22, and to remove dust from the weld seams of the second electrical connection part and the third workpiece 23, thereby improving the dust removal efficiency.

[0232] In addition, it can be understood that the dust removal of the weld seam of the first electrical connection and the second workpiece 22 by the first dust removal component 310A means at least removing the welding slag at the weld seam of the first electrical connection and the second workpiece 22. Similarly, the dust removal of the weld seam of the second electrical connection and the third workpiece 23 by the second dust removal component 310B means at least removing the welding slag at the weld seam of the second electrical connection and the third workpiece 23.

[0233] In some examples, the dust removal device 300 is located adjacent to the welding device 200 and connected to the welding frame 211, which improves the compactness of the welding device 200 and the dust removal device 300 and increases the utilization of space.

[0234] With the above setup, after the welding process is completed, the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the dust removal assembly 310. One dust removal assembly 310 removes dust from the weld seam of the first electrical connection and the second workpiece 22, while another dust removal assembly 310 removes dust from the weld seam of the second electrical connection and the third workpiece 23. The dust removal operation can improve the smoothness of the weld surface and prevent stress concentration in the weld. Completing the dust removal through a single dust removal station ensures dust removal efficiency.

[0235] The structure of the dust removal component 310 has a significant impact on the efficiency and effectiveness of dust removal. The structure of the dust removal component 310 will be described in detail below.

[0236] In some embodiments of this application, such as Figures 3-10 As shown, each dust removal assembly 310 includes a dust removal frame 311, a dust removal carrier 312, a cleaning component 313, and a dust removal drive component 314. The dust removal carrier 312 is slidably disposed on the dust removal frame 311 along the second direction Y. The cleaning component 313 is movably disposed on the dust removal carrier 312 and is located above the conveyor line 100 along the second direction Y. The dust removal drive component 314 is connected to the dust removal carrier 312 and is used to drive the dust removal carrier 312 to move. The second direction Y is the height direction of the conveyor line 100.

[0237] It is understandable that the cleaning component 313 is a component used to remove dust from the weld. That is, the cleaning component 313 of the first dust removal assembly 310A is used to remove dust from the weld of the first electrical connection and the second workpiece 22, and the cleaning component 313 of the second dust removal assembly 310B is used to remove dust from the weld of the second electrical connection and the third workpiece 23.

[0238] The dust removal frame 311 is a component that supports the dust removal support 312, the cleaning component 313, and the dust removal drive component 314. For example, the dust removal frame 311 can be composed of multiple dust removal support plates.

[0239] In some examples, the dust removal drive 314 is a telescopic motor, the telescopic shaft of which is connected to the dust removal carrier 312 and extends and retracts along the second direction Y to drive the dust removal carrier 312 to rise and fall. Of course, the dust removal drive 314 can also be a telescopic cylinder, the telescopic rod of which is connected to the dust removal carrier 312 and moves along the second direction Y to drive the dust removal carrier 312 to rise and fall.

[0240] With the above settings, after the welding operation is performed, the dust removal drive 314 drives the dust removal carrier 312 and the cleaning component 313 to move together along the second direction Y in a direction away from the conveyor line 100. Then the support 1 is transferred to the bottom of the cleaning component 313. Next, the dust removal drive 314 drives the dust removal carrier 312 and the cleaning component 313 to move together along the second direction Y in a direction closer to the conveyor line 100. When the cleaning component 313 comes into contact with the weld, the cleaning component 313 cleans the welding slag at the weld. Through the lifting and lowering movement of the cleaning component 313 along the second direction Y, before cleaning, it is ensured that the cleaning component 313 does not interfere with the first workpiece 21, the second workpiece 22, and the third workpiece 23. During cleaning, it can also ensure contact between the cleaning component 313 and the weld, thus ensuring the cleaning effect.

[0241] In some embodiments of this application, such as Figures 3-10 As shown, each dust removal assembly 310 also includes a dust removal hood 315 and a negative pressure section 316. The dust removal hood 315 is disposed on the dust removal support member 312 and has an opening along the second direction Y toward the conveyor line 100. The cleaning member 313 is at least partially movable inside the dust removal hood 315. The negative pressure section 316 communicates with the interior of the dust removal hood 315 and is used to suck out welding slag.

[0242] The dust collector hood 315 is an open shell structure with an opening facing the conveyor line 100 along the second direction Y. After the dust collector carrier 312 moves downward along the second direction Y, the opening of the dust collector hood 315 surrounds the circumference of the weld, and the cleaning component 313 cleans inside the dust collector hood 315. For example, the dust collector hood 315 can be a cuboid structure.

[0243] In some examples, the negative pressure unit 316 includes a negative pressure fan and a dust collection pipe. One end of the dust collection pipe is connected to the inside of the dust collection hood 315, and the other end of the dust collection pipe is connected to the outside of the dust collection hood 315. The negative pressure fan is connected to the dust collection pipe to provide suction. In this way, when suctioning welding slag, the negative pressure fan provides suction, and the welding slag inside the dust collection hood 315 is sucked out through the dust collection pipe. The arrangement of the dust collection pipe can facilitate the actual spatial layout.

[0244] Of course, the negative pressure section 316 may also consist of only a negative pressure fan, which can be used to directly suck out the welding slag inside the dust removal hood 315.

[0245] With the above settings, when the cleaning component 313 performs the cleaning operation, the dust cover 315 first covers the weld seam, and then the cleaning component 313 moves to clean the welding slag. At this time, the dust cover 315 can block the welding slag from splashing, and at the same time, the negative pressure part 316 sucks out the welding slag in the dust cover 315, so as to achieve a better effect of removing welding slag from the weld seam.

[0246] In some embodiments of this application, such as Figure 10 As shown, the cleaning component 313 includes a first cleaning support, a first cleaning drive 3131, a second cleaning drive 3132, and a brush body. Along the transmission direction of the conveyor line 100, the first cleaning support is slidably disposed on the dust removal support 312. The first cleaning drive 3131 is connected to the first cleaning support and is used to drive the first cleaning support to move. The brush body and the second cleaning drive 3132 are disposed on the first cleaning support. The brush body is movably disposed on the first cleaning support around the transmission direction of the conveyor line 100. The second cleaning drive 3132 is connected to the brush body and is used to drive the brush body to rotate or oscillate.

[0247] In other words, the first cleaning drive unit 3131 drives the first cleaning carrier unit to move along the transmission direction of the conveyor line 100 to clean the weld seam using the brush body in the length direction of the weld seam, and the second cleaning drive unit 3132 drives the brush body to rotate or swing around the transmission direction of the conveyor line 100 to clean the weld seam. By cleaning the weld seam in two directions, the cleaning efficiency is ensured.

[0248] The brush body can be a roller brush or a bristle brush, etc.

[0249] Alternatively, the first cleaning drive unit 3131 can be a lead screw and nut mechanism or a linear motor, etc. The second cleaning drive unit 3132 can be a rotary motor or a swing cylinder, etc.

[0250] It is understandable that the cleaning component 313 being at least partially located within the dust cover 315 means that the brush body of the cleaning component 313 is located within the dust cover 315, and that the setting of the dust cover 315 should not affect the movement of the brush body.

[0251] With the above configuration, when the cleaning component 313 performs the cleaning operation, the brush body rotates or swings under the drive of the second cleaning drive unit 3132 to clean the welding slag. At the same time, the first cleaning support unit moves along the transmission direction of the conveyor line 100 under the drive of the first cleaning drive unit 3131. This achieves the combination of the rotation or swing of the brush body and the translational motion, thus improving the cleaning effect.

[0252] Of course, in other embodiments, the cleaning component 313 may also include only a brush body and a second cleaning drive part 3132, which is connected to the brush body and is used to drive the brush body to rotate or swing, thus also achieving the cleaning of the weld seam.

[0253] In some embodiments of this application, such as Figure 10 As shown, each dust removal component 310 also includes a dust removal hood 315 disposed on the dust removal carrier 312. The cleaning component 313 also includes a second cleaning carrier and a third cleaning drive 3133. Along the second direction Y, the second cleaning carrier is slidably disposed on the first cleaning carrier, and the brush body and the second cleaning drive 3132 are disposed on the second cleaning carrier, with the brush body located inside the dust removal hood 315. The third cleaning drive 3133 is connected to the second cleaning carrier and is used to drive the second cleaning carrier to move.

[0254] In this embodiment, in some examples, each dust removal assembly 310 further includes a dust removal hood 315 and a negative pressure section 316. The dust removal hood 315 is disposed on the dust removal support member 312 and has an opening along the second direction Y toward the conveyor line 100. The cleaning member 313 is at least partially movable within the dust removal hood 315. The negative pressure section 316 communicates with the interior of the dust removal hood 315 and is used to suck out welding slag.

[0255] The third cleaning drive component can be a linear motor, a telescopic cylinder, or a lead screw and nut mechanism, etc.

[0256] With the above configuration, the brush body and the second cleaning drive unit 3132 are located on the second cleaning support unit, which is located on the first cleaning support unit. This allows for a combination of rotation, swinging, and translational motion of the brush body within the dust cover 315. In addition, when the brush body needs cleaning, the third cleaning drive unit 3133 can be used to drive the second cleaning support unit to descend along the second direction Y so that the brush body contacts the weld. After cleaning, in addition to using the dust support unit 312 to move the cleaning unit 313 and the dust removal unit as a whole upward, the third cleaning drive unit 3133 can also be used to drive the second cleaning support unit to rise along the second direction Y so that the brush body completely enters the dust cover 315. At this time, driving the brush body to move can perform self-cleaning of the brush body, thereby reducing the contamination brought by the brush body.

[0257] After cleaning the weld seam using the dust removal device 300, adhesive can be applied to the weld seam to prevent corrosion from corrosive substances such as liquids or gases.

[0258] In some embodiments of this application, such as Figures 11-17 As shown, the battery production line also includes an adhesive applicator 400, located downstream of the welding device 200 along the conveying direction of the conveyor line 100. The adhesive applicator 400 includes an adhesive applicator frame 410 and multiple adhesive applicators 420. The adhesive applicators 420 are movably mounted on the adhesive applicator frame 410 and positioned above the conveyor line 100 along the second direction Y. The adhesive applicators 420 are used to absorb or release adhesive. The multiple adhesive applicators 420 include a first adhesive applicator 420A and a second adhesive applicator 420B, which are arranged at intervals along the first direction X. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are conveyed to the adhesive applicator 420, the first adhesive applicator 420A releases the adhesive on it to bond the weld between the first electrical connection and the second workpiece 22. The second adhesive applicator 420B releases the adhesive on it to bond the weld between the second electrical connection and the third workpiece 23. Wherein, the second direction Y is the height direction of the conveyor line 100.

[0259] The adhesive application frame 410 is a component that supports the adhesive application part 420. For example, the adhesive application frame 410 can be composed of multiple adhesive application support plates.

[0260] In addition, the adhesive application part 420 can be composed of a vacuum suction head or a vacuum suction cup, etc., which uses the vacuum suction head to adsorb or release the adhesive.

[0261] In some examples, there are multiple first adhesive applicators 420A, which are arranged sequentially along the conveying direction of the conveyor line 100. There are also multiple second adhesive applicators 420B, which are arranged sequentially along the conveying direction of the conveyor line 100. This allows for the simultaneous application of adhesive to multiple workpiece assemblies 2.

[0262] For example, there are two first adhesive applicators 420A, arranged sequentially along the conveying direction of the conveyor line 100, and two second adhesive applicators 420B, arranged sequentially along the conveying direction of the conveyor line 100. One first adhesive applicator 420A applies adhesive to the weld seam of a group of second workpieces 22 and the first electrical connection, and another first adhesive applicator 420A applies adhesive to the weld seam of another group of second workpieces 22 and the first electrical connection. One second adhesive applicator 420B applies adhesive to the weld seam of a group of third workpieces 23 and the second electrical connection, and another second adhesive applicator 420B applies adhesive to the weld seam of another group of third workpieces 23 and the second electrical connection. Applying adhesive to multiple workpiece assemblies 2 simultaneously can improve the efficiency of adhesive application.

[0263] Along the conveying direction of the conveyor line 100, the distance between two adjacent workpiece assemblies 2 may change, therefore, as Figure 12 As shown, the adhesive applicator 400 also includes a pitch-changing mechanism 430. Along the transmission direction of the conveyor line 100, the pitch-changing mechanism 430 is connected to the first adhesive applicator 450, and the adhesive applicator 420 is connected to the pitch-changing mechanism 430. Along the transmission direction of the conveyor line 100, the pitch-changing mechanism 430 is used to drive two adjacent first adhesive applicators 420A to move towards or relative to each other, so as to adjust the distance between the two adjacent first adhesive applicators 420A along the transmission direction of the conveyor line 100 to adapt to the relative position of the two adjacent workpiece assemblies 2. The pitch-changing mechanism 430 is also used to drive two adjacent second adhesive applicators 420B to move towards or relative to each other, so as to adjust the distance between the two adjacent second adhesive applicators 420B along the transmission direction of the conveyor line 100 to adapt to the relative position of the two adjacent workpiece assemblies 2, so as to adapt to various working conditions and improve the adaptability of the adhesive applicator 400.

[0264] With the above configuration, after the welding process is completed, the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the adhesive application component 420. Since the first adhesive application component 420A and the second adhesive application component 420B are arranged at intervals along the first direction X, the first adhesive application component 420A can release its adhesive to bond the weld between the first electrical connection and the second workpiece 22, and the second adhesive application component 420B can release its adhesive to bond the weld between the second electrical connection and the third workpiece 23. The adhesive application improves the strength of the welded joint and prevents corrosion of the weld by liquids or gases. The inclusion of the first adhesive application component 420A and the second adhesive application component 420B improves the efficiency of adhesive application.

[0265] In some embodiments of this application, such as Figures 11-17As shown, the adhesive applicator 400 also includes an adhesive supply component 440, a first adhesive applicator carrier 450, and a first adhesive applicator drive component 460. Along the first direction X, the adhesive supply component 440 and the adhesive applicator frame 410 are respectively disposed on opposite sides of the conveyor line 100. The adhesive supply component 440 is used to supply adhesive. The first adhesive applicator carrier 450 is connected to the adhesive applicator frame 410 and can slide along the first direction X between an adsorption position and a release position. The adhesive applicator 420 is movably connected to the first adhesive applicator carrier 450. The first adhesive applicator drive component 460 is connected to the first adhesive applicator carrier 450 and is used to drive the first adhesive applicator carrier 450 to move. In the adsorption position, the first adhesive applicator 420A is located at the adhesive supply component 440 and is used to adsorb adhesive, and the second adhesive applicator 420B is located at the adhesive supply component 440 and is used to adsorb adhesive. In the release position, the first adhesive part 420A is used to release the adhesive thereon to bond the weld between the first electrical connection and the second workpiece 22, and the second adhesive part 420B is used to release the adhesive thereon to bond the weld between the second electrical connection and the third workpiece 23.

[0266] It is understandable that adhesive is stored in the adhesive supply part 440, and the adhesive application part 420 can take the adhesive from the adhesive supply part 440.

[0267] In some examples, such as Figures 11-17 As shown, the adhesive applicator 400 also includes a second adhesive applicator support 470 and a second adhesive applicator drive 480. Along the second direction Y, the second adhesive applicator support 470 is slidably connected to the first adhesive applicator support 450, and the adhesive applicator 420 is movably connected to the second adhesive applicator support 470 and disposed on the first adhesive applicator support 450 via the second adhesive applicator support 470. The second adhesive applicator drive 480 is connected to the second adhesive applicator support 470 and is used to drive the second adhesive applicator support 470 to move. With this configuration, during operation of the adhesive application device 400, the second adhesive application carrier 470 first rises along the second direction Y to avoid components on the conveyor line 100. Then, the first adhesive application carrier 450 moves along the first direction X to the adsorption position. Next, the second adhesive application carrier 470 descends along the second direction Y to lower the adhesive application component 420 to adsorb the adhesive. Then, the second adhesive application carrier 470 rises along the second direction Y to raise the adhesive application component 420 with the adsorbed adhesive. Next, the first adhesive application carrier 450 moves along the first direction X to the release position. Finally, the second adhesive application carrier 470 descends along the second direction Y to adhere the adhesive to the weld seam. By configuring the second adhesive application carrier 470 and the second adhesive application drive 480, the raising and lowering of the adhesive application component 420 is achieved, preventing interference between the components on the conveyor line 100 and the adhesive application component 420.

[0268] Based on this, in some examples, such as Figures 11-17As shown, the adhesive applicator 400 also includes a pitch-changing mechanism 430, which is connected to the second adhesive applicator 470 and is mounted on the first adhesive applicator 450. This allows the adhesive applicator 420 to move along the first direction X and the second direction Y, and also allows for adjustment of the relative position between two adjacent adhesive applicators 420 along the transmission direction of the conveyor line 100, thereby improving the adaptability and intelligence of the adhesive applicator 400.

[0269] With the above configuration, the adhesive supply component 440 can provide adhesive to the adhesive application component 420. Specifically, the first adhesive application carrier 450 first moves the adhesive application component 420 to the adsorption position along the first direction X. At the adsorption position, the first adhesive application component 420A is located at the adhesive supply component 440 and adsorbs the adhesive. At the same time, the second adhesive application component 420B is located at the adhesive supply component 440 and adsorbs the adhesive. Then, the first adhesive application carrier 450 moves the adhesive application component 420 to the release position along the second direction Y. At this time, the first adhesive application component 420A releases the adhesive on it to bond the weld between the first electrical connection part and the second workpiece 22, and the second adhesive application component 420B releases the adhesive on it to bond the weld between the second electrical connection part and the third workpiece 23. This improves the intelligence of adhesive supply and application and increases the efficiency of adhesive application.

[0270] In some embodiments of this application, the arrangement order of the first adhesive component 420A and the second adhesive component 420B along the first direction X is the opposite of the arrangement order of the first electrical connection portion and the second electrical connection portion.

[0271] In some examples, along the first direction X, with the adhesive applicator 410 pointing towards the adhesive supply component 440, the first adhesive applicator 420A and the second adhesive applicator 420B are arranged in sequence, and the second electrical connection part and the first electrical connection part are arranged in sequence at the same time.

[0272] With the above configuration, since the arrangement order of the first adhesive component 420A and the second adhesive component 420B is opposite to the arrangement order of the first electrical connection and the second electrical connection, when applying adhesive, along the first direction X, the first adhesive component 420A and the second adhesive component 420B are first moved to the release position along with the first adhesive support 450. In the release position, the first adhesive component is first positioned above the first electrical connection and the second workpiece 22. At this time, along the first direction X, the second adhesive component 420B will be offset from the first electrical connection and the second workpiece 22, so that the second adhesive component 420B will not interfere with the first workpiece 21 and the second workpiece 22. Then, the second adhesive component is positioned above the second electrical connection and the third workpiece 23. At this time, along the first direction X, the first adhesive component 420A will be offset from the second electrical connection and the third workpiece 23, so that the first adhesive component 420A will not interfere with the first workpiece 21 and the second workpiece 22. This adhesive application operation is easier to perform.

[0273] The structure of the glue supply component 440 has a significant impact on the glue supply process. The specific structure of the glue supply component 440 is described below.

[0274] In some embodiments of this application, such as Figures 11-17 As shown, the adhesive supply unit 440 includes an adhesive supply frame 441, an adhesive clamping part 442, an adhesive clamping drive part 443, an adhesive pressing part 444, and an adhesive pressing drive part 445. The adhesive supply frame 441 is used to hold the film roll 3, which can rotate around a first direction X. Along the transmission direction of the conveyor line 100, the adhesive clamping part 442 is disposed on one side of the film roll 3 and slidably disposed on the adhesive supply frame 441. The adhesive clamping part 442 is used to clamp the tape head of the film roll 3. The adhesive clamping drive part 443 is connected to the adhesive clamping part 442 and is used to drive the adhesive clamping part 442 to move. Along the second direction Y, the adhesive pressing part 444 is slidably disposed on the adhesive supply frame 441 and is used to slide to press and tighten the pulled-out tape. The adhesive pressing drive part 445 is connected to the adhesive pressing part 444 and is used to drive the adhesive pressing part 444 to move. At the adsorption position, along the transmission direction of the conveyor line 100, the first adhesive applicator 420A and the second adhesive applicator 420B are both located above the tape between the pressing part 444 and the clamping part 442.

[0275] It is understandable that film roll 3 refers to a roll structure made of colloid.

[0276] The glue supply frame 441 is a component that at least supports the glue clamping part 442 and the glue pressing part 444. For example, the glue supply frame 441 may be composed of multiple glue supply support plates.

[0277] In some examples, the clamping section 442 includes two clamping plates spaced apart along the second direction Y and a clamping drive body. The two clamping plates can face each other along the second direction Y to clamp the head of the film roll 3, or the two clamping plates can move away from each other along the second direction Y to release the head of the film roll 3. The clamping drive force is connected to the two clamping plates to drive their movement. With this configuration, when it is necessary to pull out the tape, the two clamping plates move towards each other to clamp the head of the film roll 3. Then, along the transmission direction of the conveyor line 100, the two clamping plates are driven away from the position of the film roll 3 to pull out a portion of the tape. After the adhesive applicator 420 is located above the portion of tape between the clamping section 442 and the pressing section 444, the two clamping plates are driven to move away from each other to release the adhesive head. Then, the adhesive applicator is used to adsorb the portion of tape located between the clamping section 442 and the pressing section 444.

[0278] In some examples, the glue-clamping drive unit 443 can be a lead screw and nut mechanism, a telescopic motor or a telescopic cylinder, etc., and the glue-clamping drive unit 443 can also be located on the glue supply frame 441.

[0279] In some examples, along the second direction Y, there is a mating platform below the pressing part 444, and the pressing part 444 presses the tape onto the mating platform to ensure that the tape is pressed tightly and that the tape between the pressing part 444 and the clamping part 442 is in a taut state.

[0280] In some examples, the pressure drive unit 445 can be a lead screw and nut mechanism, a telescopic cylinder or a telescopic cylinder, etc., and the pressure drive unit can also be located on the glue supply frame 441.

[0281] In some examples, such as Figures 11-17 As shown, the adhesive supply unit 440 includes two film rolls 3 arranged sequentially along the first direction X. The included angle simultaneously clamps the adhesive tips of both film rolls 3 and pulls out the adhesive tape from both rolls simultaneously. The pressing part 444 simultaneously presses and tightens the adhesive tape pulled out from the two film rolls 3. One film roll 3 corresponds to the first adhesive application unit 420A, providing adhesive tape for the first adhesive application unit 420A; the other film roll 3 corresponds to the second adhesive application unit 420B, providing adhesive tape for the second adhesive application unit 420B.

[0282] In some examples, the adhesive supply unit 440 also includes an adhesive release mechanism 446. Located between the pressing unit and the film roll 3 along the conveying direction of the conveyor line 100, the adhesive release mechanism 446 is used to separate the pulled-out tape with release paper from the tape. The adhesive release mechanism 446 facilitates the supply of tape without release paper to the pressing unit 444, thus simplifying subsequent adhesive application.

[0283] In some examples, the adhesive applicator 440 also includes a cutting element, such as a serrated cutting edge or a cutting blade. There are two first adhesive applicators 420A, arranged sequentially along the conveying direction of the conveyor line 100. There are also two second adhesive applicators 420B, arranged sequentially along the conveying direction of the conveyor line 100. When the two first adhesive applicators 420A move to the adsorption position, the cutting element cuts the entire strip of tape below the two first adhesive applicators 420A into two first sub-tapes. These two first sub-tapes are arranged along the conveying direction of the conveyor line 100, each corresponding to one of the two first adhesive applicators 420A. The two first adhesive applicators 420A each adsorb the two first sub-tapes. Similarly, when the two second adhesive-applying parts 420B move to the adsorption position, the cutting part will cut the whole strip of tape located below the two second adhesive-applying parts 420B into two second sub-tapes. The two second sub-tapes are set along the transmission direction of the conveyor line 100, and the two second sub-tapes correspond to the two second adhesive-applying parts 420B respectively. The two second adhesive-applying parts 420B adsorb the two second sub-tapes respectively.

[0284] With the above configuration, the clamping part 442 can pull out a section of tape from the film roll 3 along the transmission direction of the conveyor line 100, and the pressing part 444 can press on the section of tape along the second direction Y, so that the tape between the pressing part 444 and the clamping part 442 is in a taut state. At this time, when the first adhesive bearing member 450 is in the adsorption position, the first adhesive member 420A and the second adhesive member 420B will be simultaneously located above the taut tape between the pressing part 444 and the clamping part 442. The first adhesive member 420A and the second adhesive member 420B can complete the adsorption of the adhesive to complete the glue supply. This configuration can improve the automation design of glue supply and adhesive application, improve the level of intelligence, and the pressing part 444 can keep the pulled-out tape in a taut state, increasing the probability of successful glue adsorption by the first adhesive member 420A and the second adhesive member 420B.

[0285] In some embodiments of this application, such as Figures 11-17 As shown, there are two adhesive supply components 440, which are arranged sequentially along the transmission direction of the conveyor line 100. Along the first direction X, one adhesive supply component 440 is located on the movement path of the first adhesive bearing component 450.

[0286] In some examples, the glue supply unit 440 also includes a replacement moving module connected to the glue supply frame 441, which drives the glue supply frame 441 to move along the conveying direction of the conveyor line 100. In this way, the two glue supply units 440 can move automatically along the conveying direction of the conveyor line 100, making it easier to change the position of the two glue supply units 440.

[0287] With the above configuration, one glue supply component 440 can work with the glue applicator 420 on the first glue applicator 450 to complete glue supply. The other glue supply component 440 serves as a backup glue supply component 440. After the glue roll 3 on one glue supply component 440 is consumed, the glue supply component 440 is removed, and then the other glue supply component 440 is moved to the glue supply position to achieve glue supply. The redundant configuration of the glue supply component 440 can ensure the efficiency of replacing the glue supply component 440 and ensure the production efficiency of the production line.

[0288] In some embodiments of this application, such as Figures 18-21As shown, the first workpiece 21 also includes a housing 2101 and an electrode assembly 2102. The housing 2101 is sleeved on the outside of the electrode assembly 2102. Along the first direction X, the first electrical connection part and the second electrical connection part are respectively connected to the opposite sides of the electrode assembly 2102 and both extend out of the housing 2101. The battery production line also includes a positioning device 500. Along the transmission direction of the conveyor line 100, the positioning device 500 is located upstream of the welding device 200. The positioning device 500 includes a positioning frame 510, a first positioning member 520, a second positioning member 530, and a positioning drive member 540. The first positioning member 520 and the second positioning member 530 are arranged opposite to each other along the first direction X and are both slidably disposed on the positioning frame 510. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the positioning device 500, the first positioning member 520 and the second positioning member 530 move towards each other along the first direction X under the drive of the positioning drive member 540 to clamp the electrode assembly 2102, or move away from each other along the first direction X to release the electrode assembly 2102.

[0289] The positioning frame 510 can be composed of multiple columns.

[0290] In some examples, there are multiple first positioning elements 520, second positioning elements 530, and positioning drive elements 540. The first positioning elements 520 and second positioning elements 530 are set in a one-to-one correspondence, and the positioning drive elements 540 are set in a one-to-one correspondence with the first positioning elements 520. Along the transmission direction of the conveyor line 100, multiple first positioning elements 520 are set in sequence, and multiple second positioning elements 530 are set in sequence. Along the first direction X, the first positioning elements 520 and the corresponding second positioning elements 530 are set relative to each other, so that the positioning of multiple electrode assemblies 2102 can be achieved simultaneously.

[0291] In some examples, such as Figures 18-21 As shown, the positioning drive unit 540 includes a first positioning drive part 541 and a second positioning drive part 542. The first positioning drive part 541 is used to drive the first positioning member 520 to slide, and the second positioning drive part 542 is used to drive the second positioning member 530 to slide. By configuring the positioning drive unit 540 as two separate drive parts, the first positioning member 520 and the second positioning member 530 can be driven independently, providing convenience for positioning. For example, the first positioning drive part 541 can be a telescopic motor, a telescopic cylinder, or a lead screw and nut mechanism, etc. Similarly, the second positioning drive part 542 can be a telescopic motor, a telescopic cylinder, or a lead screw and nut mechanism, etc.

[0292] In other examples, the positioning drive 540 can also be a bidirectional telescopic motor, which simultaneously drives the first positioning element 520 and the second positioning element 530 to move toward or away from each other.

[0293] In some examples, such as Figures 18-21 As shown, the first workpiece 21, the second workpiece 22, and the third workpiece 23 are all supported on the support member 1. The support member 1 has a pair of first fixing parts 11, a pair of second fixing parts 12, and a fixing drive member 13. The pair of first fixing parts 11 are slidably connected to the support member 1 and are spaced apart along the first direction X. The pair of second fixing parts 12 are slidably connected to the support member 1 and are spaced apart along the transmission direction of the conveyor line 100. The pair of first fixing parts 11 and the pair of second fixing parts 12 together form a receiving space for accommodating the first workpiece 21. The fixing drive member 13 is connected to the pair of first fixing parts 11 and the pair of second fixing parts 12 and is used to drive the pair of first fixing parts 11 and the pair of second fixing parts 12 to move towards each other to clamp the first workpiece 21 or to move away from each other to release the first workpiece 21. With this configuration, the pair of first fixing parts 11 and the pair of second fixing parts 12 can define a receiving space, thereby facilitating the placement of the first workpiece 21 and enabling coarse positioning of the first workpiece 21 as a whole. In addition, when it is necessary to position the electrode assembly 2102 relative to the housing 2101, the housing 2101 can be fixed first using a pair of first fixing parts 11 and a pair of second fixing parts 12, and then the electrode assembly 2102 can be positioned using the first positioning member 520 and the second positioning member 530. This can prevent the housing 2101 from moving with the electrode assembly 2102 and ensure the smooth positioning of the electrode assembly 2102.

[0294] The fixed drive component 13 can be a combination of a linkage structure and a motor.

[0295] Furthermore, there are multiple pairs of first fixing parts 11 and multiple pairs of second fixing parts 12, and they are arranged correspondingly. A pair of first fixing parts 11 and a pair of second fixing parts 12 together form a receiving space. Multiple receiving spaces are arranged at intervals along the transmission direction of the conveyor line 100. There are multiple fixing drive members 13, which are arranged corresponding to multiple receiving spaces. The fixing drive members 13 are used to drive the movement of a pair of first fixing parts 11 and a pair of second fixing parts 12 that form the corresponding receiving space. In other words, the carrier has multiple receiving spaces, so that multiple first workpieces 21 can be positioned simultaneously.

[0296] In some examples, such as Figures 18-21As shown, the support member 1 also has a placement member 14 and a placement drive member 15. Along the first direction X, the placement member 14 is slidably disposed on the support member 1, and placement members 14 are located on both sides of the accommodating space opposite to each other. One placement member 14 is used to carry the second workpiece 22 on the corresponding side, and the other placement member 14 is used to carry the third workpiece 23 on the corresponding side. The placement drive member 15 is connected to the placement member 14 and is used to drive the placement member 14 to move along the first direction X. With this configuration, the placement member 14 can carry the second workpiece 22 or the third workpiece 23 along the first direction X. Therefore, before placing the first workpiece 21 into the accommodating space, the placement member 14 can be driven to carry the second workpiece 22 or the third workpiece 23 away from the accommodating space, so that the first workpiece 21 does not interfere with the second workpiece 22 or the third workpiece 23. After the first workpiece 21 is placed in the receiving space, the placement component 14 is driven to carry the second workpiece 22 or the third workpiece 23 close to the receiving space to ensure the relative position of the first workpiece 21 and the second workpiece 22 or the third workpiece 23, so as to facilitate the subsequent welding operation of the electrode assembly 2102 and the second workpiece 22 and the third workpiece 23.

[0297] The drive unit 15 can be a combination of a connecting mechanism and a motor, which will not be described in detail.

[0298] With the above settings, before performing the welding operation, the first workpiece 21, the second workpiece 22, and the third workpiece 23 will be transferred to the positioning device 500. At this time, the electrode assembly 2102 is located between the first positioning member 520 and the second positioning member 530. Along the first direction X, the first positioning member 520 and the second positioning member 530 clamp the electrode assembly 2102 to position the electrode assembly 2102. By positioning the electrode assembly 2102 along the first direction X, the distance between the electrode assembly 2102 and the second workpiece 22 and the third workpiece 23 is kept appropriate, and the first electrical connection part on the electrode assembly 2102 is positioned appropriately on the second workpiece 22, and the second electrical connection part is positioned appropriately on the third workpiece 23, so as to ensure the smooth completion of the subsequent welding operation and improve the welding accuracy.

[0299] In some embodiments of this application, such as Figures 18-21As shown, the first positioning member 520 includes a positioning support portion 521, a positioning portion 522, and an elastic portion 523. Along the first direction X, the positioning support portion 521 is slidably disposed on the positioning frame 510. Along the first direction X, the positioning portion 522 is movably disposed on the positioning support portion 521 and is opposite to and spaced apart from the second positioning member 530. The elastic portion 523 is disposed between the positioning portion 522 and the positioning support portion 521. When the second positioning member 530 and the positioning portion 522 clamp the electrode assembly 2102, and the dimension of the electrode assembly 2102 along the first direction X is greater than a threshold value, the elastic portion 523 undergoes elastic deformation under the reaction force of the electrode assembly 2102, and the positioning portion 522 moves relative to the positioning support portion 521 in a direction away from the second positioning member 530.

[0300] It is understandable that the positioning support part 521 is a component that supports the positioning part 522, and the specific shape of the positioning support part 521 can be selected as needed.

[0301] In some examples, the positioning part 522 may be the same structure as the second positioning member 530.

[0302] The elastic part 523 can be a structure such as a spring or an elastic column.

[0303] In addition, the elastic part 523 undergoes elastic deformation under the reaction of the electrode assembly 2102. The elastic part 523 may undergo compression deformation or tensile deformation, depending on the position of the elastic part 523. The following describes the positioning situation of this embodiment in terms of the elastic deformation mode of the elastic part 523 and the two cases.

[0304] In the first scenario, the elastic part 523 undergoes compressive deformation under the reaction force of the electrode assembly 2102. Thus, along the first direction X, the elastic part 523 can be located on the side of the positioning part 522 away from the second positioning member 530. Therefore, when positioning the electrode assembly 2102, the second positioning member 530 is first driven to the reference position, and then the positioning support part 521 is driven to move closer to the second positioning member 530. At this time, the positioning part 522, which is movably mounted on the positioning support part 521, will move together with the positioning support part 521 towards the second positioning member 530, until the second positioning member 530... Both the positioning part 522 and the positioning part 523 are in contact with the electrode assembly 2102. If the size of the electrode assembly 2102 along the first direction X is appropriate, then the positioning is completed. The elastic part 523 is consistent with the initial state. If the size of the electrode assembly 2102 along the first direction X is greater than the threshold, then the elastic part 523 will be subjected to force and undergo compression deformation. Then the positioning part 522 will move away from the second positioning member 530 relative to the positioning support part 521 to avoid hard contact between the positioning part 522 and the electrode assembly 2102, thereby completing the positioning of the electrode assembly 2102 and protecting the electrode assembly 2102.

[0305] In this case, along the first direction X, the elastic part 523 may abut between the abutting part protruding from the positioning support part 521 and the positioning part 522. Alternatively, along the first direction X, one end of the elastic part 523 may be connected to the positioning part 522, and the other end of the elastic part 523 may be connected to the positioning support part 521, thus ensuring the stability of the setting of the elastic part 523.

[0306] In the second scenario, the elastic part 523 undergoes tensile deformation under the reaction force of the electrode assembly 2102. Thus, along the first direction X, the elastic part 523 can be located on the side of the positioning part 522 closer to the second positioning member 530. One end of the elastic part 523 is connected to the positioning part 522, and the other end is connected to the positioning support part 521. When positioning the electrode assembly 2102, the second positioning member 530 is first driven to the reference position, and then the positioning support part 521 is driven to move closer to the second positioning member 530. At this time, the positioning part 522, which is movably mounted on the positioning support part 521, will move closer to the second positioning member 530 along with the positioning support part 521. The second positioning member 530 moves in the direction until both the second positioning member 530 and the positioning part 522 are in contact with the electrode assembly 2102. If the size of the electrode assembly 2102 along the first direction X is appropriate, then the positioning is completed, and the elastic part 523 is in the same state as the initial state. If the size of the electrode assembly 2102 along the first direction X is greater than the threshold, then the elastic part 523 will be subjected to force and undergo tensile deformation. Then the positioning part 522 will move away from the second positioning member 530 relative to the positioning support part 521 to avoid hard contact between the positioning part 522 and the electrode assembly 2102, thereby completing the positioning of the electrode assembly 2102 and protecting the electrode assembly 2102.

[0307] It is understood that the above are merely examples of the relationship between the position of the elastic part 523 and the deformation state of the elastic part 523, and do not impose too many limitations on this embodiment.

[0308] With the above configuration, the positioning support 521 can slide along the first direction X. When it is necessary to position the electrode assembly 2102, the positioning support 521 is driven to move closer to the second positioning member 530 along the first direction X, and finally the electrode assembly 2102 is clamped between the positioning support 522 and the second positioning member 530 to achieve positioning. Since the elastic part 523 undergoes elastic deformation under the reaction of the electrode assembly 2102 when the size of the electrode assembly 2102 is greater than the threshold along the first direction X, the positioning part 522 moves away from the second positioning member 530 relative to the positioning support 521. Therefore, it can avoid hard contact between the positioning part 522 and the electrode assembly 2102, reduce the probability of damage to the electrode assembly 2102, and can also accommodate the positioning of larger-sized electrode assemblies 2102.

[0309] The following describes the feeding structure of the first workpiece 21, the second workpiece 22, and the third workpiece 23.

[0310] In some embodiments of this application, such as Figure 22 As shown, the battery production line also includes a first feeding device 600 and a second feeding device 700. Along the transmission direction of the conveyor line 100, the first feeding device 600 and the second feeding device 700 are arranged sequentially and are both located upstream of the welding device 200. The first feeding device 600 includes a first storage component 610 and a first transfer component 620. The first storage component 610 stores the second workpiece 22, and the first transfer component 620 transfers the second workpiece 22 onto the conveyor line 100. The second feeding device 700 includes a second storage component 710 and a second transfer component 720. The second storage component 710 stores a third workpiece 23. When the second workpiece 22 is transferred to the second feeding device 700, the second transfer component 720 transfers the third workpiece 23 onto the conveyor line 100.

[0311] In some examples, the support member 1 is used to carry the first workpiece 21, the second workpiece 22, and the third workpiece 23. When the support member 1 is transferred to the first feeding device 600, the first transfer member 620 is used to transfer the second workpiece 22 to the support member 1. When the support member 1 is transferred to the second feeding device 700, the second transfer member 720 is used to transfer the third workpiece 23 to the support member 1. By setting the support member 1, it is convenient to centrally transfer the first workpiece 21, the second workpiece 22, and the third workpiece 23, and it is also convenient to process the first workpiece 21, the second workpiece 22, and the third workpiece 23 in the future.

[0312] Of course, if the support 1 is not provided, after the second workpiece 22 and the third workpiece 23 are both transferred to the conveyor line 100, the positions of the second workpiece 22 and the third workpiece 23 should be on opposite sides of the first workpiece 21 along the first direction X, with the second workpiece 22 located on the side where the first electrical connection is located and the third workpiece 23 located on the side where the second electrical connection is located, so as to meet the requirements of subsequent welding operations.

[0313] In some examples, such as Figures 23-25As shown, the first storage unit 610 includes a first storage section 611, a first roller conveyor section 612, a first transfer chamber 613, a first lifting component 614, and a first adsorption and fixing section 615. The first storage section 611 is used to store the second workpiece 22. For example, the first storage section 611 can be a trolley, which can be manually loaded or loaded onto an empty conveyor line. One end of the first roller conveyor section 612 is connected to the first storage section 611, and the other end of the first roller conveyor section 612 is connected to the first transfer chamber 613. The first lifting component 614 is located in the first transfer chamber 613 and is used to drive the blister tray 4 of the first transfer chamber 613 to move from the bottom to the top along the second direction Y. The first adsorption and fixing section 615 is used to fix the raised blister tray 4. Then, the first transfer component 620 transfers the second workpiece 22 on the blister tray 4 in the first transfer chamber 613 to the conveyor line 100, and finally completes the unloading and recycling of the blister tray 4.

[0314] The number of first storage components 610 can be one or more. For example, the number of first storage components 610 can be two, which can meet the feeding frequency of the first transfer component 620.

[0315] In some examples, such as Figures 23-25 As shown, the second storage unit 710 includes a second storage section 711, a second roller conveyor section 712, a second transfer chamber 713, a second lifting component 714, and a second adsorption and fixing section 715. The second storage section 711 is used to store the third workpiece 23. For example, the second storage section 711 can be a trolley, which can be manually loaded or loaded onto an empty conveyor line. One end of the second roller conveyor section 712 is connected to the second storage section 711, and the other end of the second roller conveyor section 712 is connected to the second transfer chamber 713. The second lifting component 714 is located in the second transfer chamber 713 and is used to drive the blister tray 4 of the second transfer chamber 713 to move from the bottom to the top along the second direction Y. The second adsorption and fixing section 715 is used to fix the raised blister tray 4. Then, the second transfer component 720 transfers the third workpiece 23 on the blister tray 4 in the second transfer chamber 713 to the conveyor line 100, and finally completes the unloading and recycling of the blister tray 4.

[0316] The number of second storage components 710 can be one or more. For example, the number of second storage components 710 can be two, which can meet the feeding frequency of the second transfer component 720.

[0317] With the above setup, before performing the welding operation, at the first feeding device 600, the first transfer component 620 is used to transfer the second workpiece 22 at the first storage component 610 to the conveyor line 100. When the second workpiece 22 is transferred to the second feeding device 700, the second transfer component 720 is used to transfer the third workpiece 23 at the second storage component 710 to the conveyor line 100, thereby completing the feeding of the second workpiece 22 and the third workpiece 23. The separate feeding of the second workpiece 22 and the third workpiece 23 facilitates the actual spatial layout.

[0318] In some embodiments of this application, such as Figures 23-30 As shown, the first transfer unit 620 includes a first transport section 621, a marking section 622, and a second transport section 623. The first transport section 621 is used to transport the second workpiece 22 on the first storage unit 610 to the marking section 622. The marking section 622 is used to mark the second workpiece 22. The second transport section 623 is used to transport the marked second workpiece 22 to the conveyor line 100.

[0319] Yes, it is understood that the second workpiece 22 can be either a male end cap or a female end cap, that is, a code can be engraved on either the male end cap or the female end cap. This application will use the example of the second workpiece 22 being a female end cap for introduction.

[0320] In some examples, at least one of the first transport unit 621 and the second transport unit 623 can be a structure that combines a four-axis robot and a vacuum chuck. The vacuum chuck is used to adsorb the second workpiece 22, and the four-axis robot is connected to the vacuum chuck and drives the vacuum chuck to move. Since the four-axis robot has multiple degrees of freedom, it can realize the movement of the vacuum chuck in multiple directions, which can facilitate the loading of the second workpiece 22.

[0321] In other examples, at least one of the first conveying unit 621 and the second conveying unit 623 may be a combination mechanism of a linear motor and a vacuum suction cup. Multiple linear motors are provided, and the multiple linear motors realize movements in multiple directions such as horizontal movement and lifting, so as to drive the vacuum suction cup to move in multiple directions.

[0322] In some examples, the marking unit 622 includes a marking circulation line 6221, a first feeding and scanning module 6222, a marking marble 6223, a laser marking module 6224, and a marking and scanning module 6225. The first feeding and scanning module 6222, the marking marble 6223, the laser marking module 6224, and the marking and scanning module are arranged sequentially along the transmission direction of the marking circulation line 6221. The first conveying unit 621 conveys the second workpiece 22 onto the marking circulation line 6221, which is used to transport the second workpiece 22. With this setup, after the second workpiece 22 passes through the first loading and scanning module 6222, the second workpiece 22 will be scanned and recorded. When the second workpiece 22 passes through the laser marking module 6224, the laser marking module 6224 will mark the second workpiece 22. At the same time, the marked marble 6223 will release carbon dioxide and calcium oxide at high temperature. Carbon dioxide can act as a protective gas, reducing the probability of oxidation of the molten pool metal during welding and improving welding quality. After marking is completed, the second workpiece 22 is transferred to the post-marking scanning module 6225 for post-marking scanning. Finally, the second conveying unit 623 will transport the marked second workpiece 22 to the conveyor line 100. This setup can not only ensure marking efficiency but also marking quality.

[0323] Of course, the marking unit 622 may also include only the laser marking module 6224, which marks the second workpiece 22. After marking, the second workpiece 22 is directly transported to the conveyor line 100 by the second transport unit 623.

[0324] With the above settings, when the second workpiece 22 is transferred, the first transport unit 621 first transports the second workpiece 22 of the first storage unit 610 to the marking unit 622. After the marking unit 622 completes the marking, the second transport unit 623 then transports the marked second workpiece 22 to the conveyor line 100. This completes the marking operation during the loading process of the second workpiece 22, and enables the tracking of the battery throughout its entire life cycle.

[0325] In other embodiments, the first transfer member 620 may also be a robotic arm mechanism, which can be used directly to transfer the second workpiece 22.

[0326] In some embodiments of this application, such as Figures 23-30As shown, along the second direction Y, the second workpiece 22 includes a first surface and a second surface facing each other. A marking section 622 is used to mark the first surface. Before marking, the first surface faces upwards along the second direction Y. The first transfer member 620 also includes a flipping section 624. After marking by the marking section 622 and before transport by the second transport section 623, the flipping section 624 flips the second workpiece 22 so that the second surface faces upwards along the second direction Y. The second surface is used to support the first electrical connection section. The second direction Y is the height direction of the conveyor line 100.

[0327] It is understandable that the second workpiece 22 is in the first storage unit 610 with its first surface facing up. After the first transport unit 621 transports the second workpiece 22 to the coding conveyor line 100, the second workpiece 22 is still in the first surface facing up. After the second workpiece 22 passes through the coding and scanning module 6225, it needs to be flipped by the flipping unit 624. After flipping, the second surface of the second workpiece 22 is facing up. At this time, the second transport unit 623 transports the third workpiece 23 to the support unit 1, and then the first electrical connection part is placed on the second surface to prepare for welding the first electrical connection part to the second surface later.

[0328] The flipping part 624 can be composed of a gear and rack structure, or a motor and connecting structure, or a swing cylinder that can directly rotate to flip the second workpiece 22. This application does not limit the structure of the flipping part 624.

[0329] With the above configuration, markings can be made on the first surface. After marking, the second workpiece 22 can be flipped using the flipping part 624 so that the second surface faces upward. This makes it easier to place the first electrical connection part on the second surface, facilitating subsequent welding operations. The flipping part 624 facilitates both marking and placement of the first electrical connection part.

[0330] In some embodiments of this application, such as Figures 23-30 As shown, the second transfer unit 720 includes a third transport unit 721, a preliminary positioning mechanism 722, and a fourth transport unit 723. The third transport unit 721 is used to transport the third workpiece 23 on the second storage unit 710 to the preliminary positioning mechanism 722. The preliminary positioning mechanism 722 is used to position the third workpiece 23 along the first direction X and the transmission direction of the conveyor line 100. The fourth transport unit 723 is used to transport the third workpiece 23 after positioning on the preliminary positioning mechanism 722 to the conveyor line 100.

[0331] In some examples, at least one of the third transport unit 721 and the fourth transport unit 723 can be a structure that combines a four-axis robot and a vacuum chuck. The vacuum chuck is used to adsorb the third workpiece 23, and the four-axis robot is connected to the vacuum chuck and drives the vacuum chuck to move. Since the four-axis robot has multiple degrees of freedom, it can realize the movement of the vacuum chuck in multiple directions, which can facilitate the loading of the third workpiece 23.

[0332] In other examples, at least one of the third transport unit 721 and the fourth transport unit 723 may be a combination mechanism of a linear motor and a vacuum suction cup. Multiple linear motors are provided, and the multiple linear motors realize movement in multiple directions such as lateral movement and lifting, so as to drive the vacuum suction cup to move in multiple directions.

[0333] In some examples, such as Figures 23-30 As shown, the second transfer component 720 also includes a transfer conveying section 724 and a mating part 725. The mating part 725 has a simulated workpiece with the same size as the electrode assembly 2102. The third workpiece 23 is positioned by the preliminary positioning mechanism 722 along the first direction X so that the distance between the third workpiece 23 and the simulated workpiece is appropriate, so as to simulate the distance between the third workpiece 23 and the electrode assembly 2102 after the third workpiece 23 is placed on the conveyor line 100. If the third workpiece 23 and the simulated workpiece are not properly mated, it is proven that the third workpiece 23 is unqualified. The unqualified third workpiece 23 is then transported to the transfer conveying section 724, and the unqualified third workpiece 23 is transferred by the transfer conveying section 724.

[0334] With the above settings, when the third workpiece 23 is transferred, the third transport unit 721 first transports the third workpiece 23 of the second storage unit 710 to the preliminary positioning mechanism 722. After the preliminary positioning mechanism 722 completes the positioning, the fourth transport unit 723 then transports the positioned third workpiece 23 to the conveyor line 100. This completes the positioning operation during the loading process of the third workpiece 23, making it easier to accurately transport the third workpiece 23 to the support unit 1 using the third transport unit 721, thereby improving the accuracy of subsequent welding.

[0335] In other embodiments, the second transfer member 720 may also be a robotic arm mechanism, which can be used directly to transfer the third workpiece 23.

[0336] In some embodiments of this application, such as Figure 30As shown, the preliminary positioning mechanism 722 includes a support platform, a first protrusion 7221, a second protrusion 7222, a first positioning block 7223, a second positioning block 7224, a first telescopic drive member 7225, and a second telescopic drive member 7226. Along the first direction X, the first protrusion 7221 and the first positioning block 7223 are spaced apart on the support platform, and the first positioning block 7223 can move along the first direction X under the drive of the first telescopic drive member 7225 to approach or move away from the first protrusion 7221. Along the transmission direction of the conveyor line 100, the second protrusion 7222 and the second positioning block 7224 are spaced apart on the support platform, and the second positioning block 7224 can move along the transmission direction of the conveyor line 100 under the drive of the second telescopic drive member 7226 to approach or move away from the first protrusion 7221. The first protrusion 7221, the second protrusion 7222, the first positioning block 7223, and the second positioning block 7224 form a positioning space for placing the third workpiece 23.

[0337] It is understandable that the support platform is used to support the third workpiece 23, the first protrusion 7221, the second protrusion 7222, the first positioning block 7223, the second positioning block 7224, the first telescopic drive 7225, and the second telescopic drive 7226.

[0338] The number of first protrusions 7221 can be one or more. When there are multiple first protrusions 7221, they are arranged along the transmission direction of the conveyor line 100, which can ensure the stability of the contact between the first protrusions 7221 and the third workpiece 23. For example, two first protrusions 7221 are provided.

[0339] Furthermore, the number of second protrusions 7222 can be one or more. When there are multiple second protrusions 7222, the multiple second protrusions 7222 are arranged along the first direction X, which can ensure the stability of the contact between the second protrusions 7222 and the third workpiece 23. For example, two second protrusions 7222 are provided.

[0340] In some examples, the first telescopic drive 7225 can be a telescopic cylinder, a telescopic motor, or a lead screw and nut mechanism. Similarly, the second telescopic drive 7226 can be a telescopic cylinder, a telescopic motor, or a lead screw and nut mechanism.

[0341] With the above settings, when positioning the third workpiece 23, the third workpiece 23 is first placed in the positioning space. Then, the first positioning block 7223 is used to approach the first protrusion 7221 along the first direction X, so that the third workpiece 23 is clamped between the first protrusion 7221 and the first positioning block 7223 along the first direction X, thus completing the positioning of the third workpiece 23 in the first direction X. In addition, the second positioning block 7224 is used to approach the second protrusion 7222 along the transmission direction of the conveyor line 100, so that the third workpiece 23 is clamped between the second protrusion 7222 and the second positioning block 7224 along the transmission direction of the conveyor line 100, thus completing the positioning of the third workpiece 23 along the transmission direction of the conveyor line 100. After positioning is completed, the third workpiece 23 is released to facilitate subsequent transfer. This positioning method has high positioning accuracy and simple structure.

[0342] In other embodiments, the preliminary positioning mechanism 722 may also include a support platform, two first telescopic motors, and two second telescopic motors. The two first telescopic motors and two second telescopic motors are mounted on the support platform. Along the first direction X, the two first telescopic motors are arranged opposite each other, and their output shafts can move towards or away from each other to clamp or release the third workpiece 23. Along the transmission direction of the conveyor line 100, the two second telescopic motors are arranged opposite each other, and their output shafts can move towards or away from each other to clamp or release the third workpiece 23, thereby achieving the positioning of the third workpiece 23.

[0343] In some embodiments of this application, such as Figure 22 As shown, the battery production line also includes a transfer device 800. Along the transmission direction of the conveyor line 100, the transfer device 800 is located upstream of the welding device 200. The transfer device 800 is used to transfer the first workpiece 21 onto the conveyor line 100.

[0344] In some examples, the first workpiece 21 is sequentially transported along the feeding conveyor belt, and the transfer device 800 is also located on the transport path of the feeding conveyor belt. When the first workpiece 21 passes through the transfer device 800, the first workpiece 21 is gripped.

[0345] In some examples, the transfer device 800 is a loading robot mechanism, which includes a four-axis robot arm with dual grippers to complete the loading action of the first workpiece 21. The loading robot mechanism has a 1200mm arm span, which can effectively grasp the first workpiece 21 on the loading conveyor belt. Using a four-axis robot arm, the position and height of the first workpiece 21 can be quickly adjusted, and it can be quickly compatible after the position is changed. Compared with the mechanism of linear motor with lifting module, it has a high degree of compatibility. The grippers are also equipped with clamping cylinders and bottoming structure to fix the first workpiece 21. With the middle leakage pilot valve and air tank, it can ensure that the first workpiece 21 will not fall off or fly away after the equipment is powered off or the air supply is cut off. With this configuration, the bottoming structure and clamping cylinder can realize the stable loading of the housing 2101 and the electrode assembly 2102 together, so as to ensure that the first workpiece 21 will not fall off during the handling process of the loading robot mechanism.

[0346] Of course, the transfer device 800 can also be equipped with a linear motor and a lifting module to load the first workpiece 21.

[0347] With the above settings, the transfer device 800 can complete the loading of the first workpiece 21 before the welding operation, realize the automated loading of the first workpiece 21, and improve the loading efficiency.

[0348] In some embodiments of this application, such as Figure 22 , Figures 31-34 As shown, the battery production line also includes a dust removal device 300, an adhesive application device 400, a positioning device 500, a first feeding device 600, a second feeding device 700, and a transfer device 800. Along the transmission direction of the conveyor line 100, the first feeding device 600, the second feeding device 700, the transfer device 800, the positioning device 500, the welding device 200, the dust removal device 300, and the adhesive application device 400 are sequentially arranged on the transmission path of the conveyor line 100.

[0349] In some examples, the support 1 passes through the first feeding device 600, the second feeding device 700, the transfer device 800, the positioning device 500, the welding device 200, the dust removal device 300, and the adhesive application device 400 in sequence as it is conveyed on the conveyor line 100.

[0350] With the above settings, during the transmission process, the second workpiece 22 is loaded at the first loading device 600, the third workpiece 23 is loaded at the second loading device 700, the first workpiece 21 is loaded at the transfer device 800, the electrode assembly 2102 inside the first workpiece 21 is positioned at the positioning device 500, welding is completed at the welding device 200, dust removal of the weld is completed at the dust removal device 300, and adhesive application of the weld is completed at the adhesive application device 400. In this way, the battery production and processing steps are completed automatically, improving battery production efficiency and ensuring battery production quality.

[0351] In some embodiments of this application, such as Figure 31 As shown, the battery production line also includes a pre-welding inspection device 901, a post-welding inspection device 902, and a post-adhesion inspection device 903. Along the conveying direction of the conveyor line 100, the pre-welding inspection device 901 is located between the positioning device 500 and the welding device 200. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are conveyed to the pre-welding inspection device 901, the pre-welding inspection device 901 is used to inspect the pre-welding position of the first electrical connection part on the second workpiece 22, and to inspect the pre-welding position of the second electrical connection part on the third workpiece 23. Along the conveying direction of the conveyor line 100, the post-welding inspection device 902 is located between the welding device 200 and the adhesive application device 400. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are conveyed to the post-welding inspection device 902, the post-welding inspection device 902 is used to inspect the welding position of the first electrical connection part and the second workpiece 22, and to inspect the welding position of the second electrical connection part and the third workpiece 23. Along the transmission direction of the conveyor line 100, the post-adhesion detection device 903 is located after the adhesive application device 400. When the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transmitted to the post-adhesion detection device 903, the post-adhesion detection device 903 is used to detect the adhesive application position of the first electrical connection part and the second workpiece 22, and to detect the adhesive application position of the second electrical connection part and the third workpiece 23.

[0352] For the pre-welding inspection device 901, the pre-welding inspection device 901 can be a charge-coupled device detection (CCD) device, a three-dimensional vision sensor, or a linear array sensor, etc.

[0353] For example, the pre-welding inspection device 901 is a CCD device. The CCD device has the advantages of high sensitivity and high resolution, which can accurately image the pre-welding position of the first electrical connection part on the second workpiece 22 and the pre-welding position of the second electrical connection part on the third workpiece 23, so as to ensure the accuracy of the inspection.

[0354] The post-weld inspection device 902 can be a charge-coupled device (CCD) device, a three-dimensional vision sensor, or a linear array sensor, etc.

[0355] For example, the post-weld inspection device 902 is a CCD device. The CCD device has the advantages of high sensitivity and high resolution, which can accurately image the welding position where the first electrical connection part is attached to the second workpiece 22, and accurately image the welding position where the second electrical connection part is attached to the third workpiece 23, so as to ensure the accuracy of the inspection.

[0356] The post-adhesive detection device 903 can be a charge-coupled device (CCD) detection device, a three-dimensional vision sensor, or a linear array sensor, etc.

[0357] For example, the post-adhesion detection device 903 is a CCD device. The CCD device has the advantages of high sensitivity and high resolution, which can accurately image the adhesive application position of the first electrical connection part on the second workpiece 22 and the adhesive application position of the second electrical connection part on the third workpiece 23, so as to ensure the accuracy of detection.

[0358] With the above setup, before performing the welding operation, the pre-welding inspection device 901 is used to inspect the pre-welding overlap positions of the first electrical connection and the second workpiece 22, the second electrical connection and the third workpiece 23, thereby ensuring the subsequent welding operation. After the welding operation is completed, the post-welding inspection device 902 is used to inspect the welding positions of the first electrical connection and the second workpiece 22, the second electrical connection and the third workpiece 23 to determine whether the welding is qualified. Then, after the weld seam is glued, the post-glueing inspection device 903 is used to inspect the glued positions of the first electrical connection and the second workpiece 22, the second electrical connection and the third workpiece 23 to determine whether the glued application is qualified. By setting up multiple inspection devices, the entire process of battery production is monitored, improving product yield.

[0359] In some embodiments of this application, such as Figures 35-38 As shown, along the transmission direction of the conveyor line 100, the conveyor line 100 includes multiple magnetic drive conveyor sections 110 arranged in succession. The first feeding device 600, the second feeding device 700, the transfer device 800, the positioning device 500, the welding device 200, the dust removal device 300, and the adhesive application device 400 are at least distributed on the transmission paths of the two magnetic drive conveyor sections 110.

[0360] In some examples, the multiple magnetic drive conveyor sections 110 are arranged in a ring structure, which can save space and improve space utilization along the transmission direction of the conveyor line 100.

[0361] For example, multiple conveyor sections are arranged in a square ring structure, which includes two opposing first sides and two opposing second sides. A first feeding device 600 and a second feeding device 700 are located on one of the first sides, while a positioning device 500, a welding device 200, a dust removal device 300, and an adhesive applicator 400 are located on the other first side, forming a battery production line approximately 9600mm long, 6000mm wide, and 2800mm high. This makes the overall structure of the battery production line relatively compact.

[0362] In some examples, one of the two opposing second sides has a loading magnetic drive conveyor section 110, and the other has a unloading magnetic drive conveyor section 110. A transfer device 800 is positioned on the transport path of the loading magnetic drive conveyor section 110. When the support 1 passes through the loading magnetic drive conveyor section 110, the transfer device 800 transfers the first workpiece 21 to the support 1. When the support 1 is transported to the unloading magnetic drive conveyor section 110, the unloading of the glued workpiece assembly 2 is completed. A defective workpiece recovery conveyor section can be used at the unloading magnetic drive conveyor section 110 to recover defective workpiece assemblies 2 after the glue application is completed.

[0363] The loading magnetic drive conveyor section 110 and the unloading magnetic drive conveyor section 110 can both be interconnected magnetic drive sections, which can effectively connect the two magnetic drive conveyor sections 110 at the first side, ensuring the smooth completion of the entire production process. The interconnected magnetic drive sections all adopt a structure of linear motor combined with magnetic drive stator, which can ensure the smooth transmission of the support component 1 in the loading magnetic drive conveyor section 110 and the unloading magnetic drive conveyor section 110.

[0364] Of course, the multi-segment magnetic drive transport section 110 can also be set sequentially along a straight line.

[0365] In some examples, the magnetic drive section is used to transport multiple support components 1, which are used to carry the first workpiece 21, the second workpiece 22, and the third workpiece 23. Therefore, when multiple support components 1 are transported simultaneously in a magnetic drive transport section 110, the number of support components 1 on the same magnetic drive transport section 110 can be distributed, reducing the possibility of overloading the magnetic drive transport section 110 and ensuring the safe operation of the equipment.

[0366] With the above configuration, the conveyor line 100 is composed of multiple magnetic drive conveyor sections 110, which ensures transmission efficiency. Each magnetic drive section can transport multiple support components 1, thus ensuring processing efficiency. Since the first feeding device 600, the second feeding device 700, the transfer device 800, the positioning device 500, the welding device 200, the dust removal device 300, and the adhesive application device 400 are distributed at least on the transmission paths of two magnetic drive conveyor sections 110, the number of workpieces on the same magnetic drive conveyor section 110 can be distributed when multiple first workpieces 21, multiple second workpieces 22, and multiple third workpieces 23 are transported simultaneously in one magnetic drive conveyor section 110. This reduces the possibility of overloading the magnetic drive conveyor section 110 and ensures safe operation of the equipment.

[0367] To better understand the production process of the battery production line in this application, a specific implementation method is described below.

[0368] The first feeding device 600 feeds the second workpiece 22: the conveyor line 100 transmits the support component 1 to the first feeding device 600. At the first feeding device 600, the blister tray 4 in the first storage section 611 is transferred to the bottom of the first transfer chamber 613 via the first roller conveyor section 612. Inside the first transfer chamber 613, the first lifting component 614 lifts the blister tray 4 along the second direction Y. After being lifted into place, the first adsorption fixing part 615 fixes the blister tray 4. Then, the first conveying part 621 transfers the second workpiece 22 on the blister tray 4 to the marking circulation line 6221. Under the transmission of 6221, the second workpiece 22 passes through the first loading and scanning module 6222 and completes the scanning. Then it passes through the laser marking module 6224 to mark the first surface of the second workpiece 22. After marking, the second workpiece 22 passes through the marking and scanning module 6225 to scan again. Then the second workpiece 22 is transferred to the flipping part 624. The flipping part 624 flips the second workpiece 22 so that the second surface of the second workpiece 22 faces upward. Then the second conveying part 623 conveys the second workpiece 22 to the placement part 14 on the support 1 to complete the loading of the second workpiece 22.

[0369] The second feeding device 700 feeds the third workpiece 23: the conveyor line 100 transfers the support 1 from the first feeding device 600 to the second feeding device 700. At the second feeding device 700, the blister tray 4 in the second storage section 711 is transferred to the bottom of the second transfer chamber 713 via the second roller conveyor section 712. Inside the second transfer chamber 713, the second lifting component 714 lifts the blister tray 4 along the second direction Y. After being lifted into place, the second adsorption fixing part 715 fixes the blister tray 4. Then, the third conveying part 721 transfers the third workpiece 23 on the blister tray 4. The workpiece 23 is transferred to the positioning space of the carrier platform, and then the first positioning block 7223 and the second positioning block 7224 are driven to move. In the first direction X, the first protrusion 7221 and the first positioning block 7223 clamp the third workpiece 23. In the transmission direction of the conveyor line 100, the second protrusion 7222 and the second positioning block 7224 clamp the third workpiece 23 to complete the positioning of the third workpiece 23. Then the fourth transport unit 723 transports the third workpiece 23 after positioning to another placement member 14 on the support member 1 to complete the loading of the third workpiece 23.

[0370] The first workpiece 21 is loaded by the transfer device 800: the conveyor line 100 transfers the support 1 from the second loading device 700 to the transfer device 800. At the transfer device 800, the transfer device 800 transports the first workpiece 21 (the housing 2101 and the electrode assembly 2102) onto the support 1, and places the first workpiece 21 in the space enclosed by a pair of first fixing parts 11 and a pair of second fixing parts 12, so as to complete the loading of the first workpiece 21.

[0371] Positioning device 500 positions electrode assembly 2102: Conveyor line 100 transmits support member 1 from transfer device 800 to positioning device 500. A pair of first fixing parts 11 and a pair of second fixing parts 12 move towards each other to clamp housing 2101 to fix housing 2101. Then, first positioning member 520 and second positioning member 530 clamp electrode assembly 2102 along the first direction X to complete the positioning of electrode assembly 2102.

[0372] The pre-welding inspection device 901 detects the pre-welding position: the conveyor line 100 transmits the support 1 from the self-positioning device 500 to the pre-welding inspection device 901. The pre-welding inspection device 901 detects the pre-welding position of the first electrical connection part on the second workpiece 22 and detects the pre-welding position of the second electrical connection part on the third workpiece 23 to determine whether the overlapping position meets the requirements.

[0373] Welding device 200 welding: Conveyor line 100 transmits support 1 from pre-welding inspection device 901 to welding device 200. At welding device 200, pressing member 213 of first welding assembly 210A presses down to fix second workpiece 22 and first electrical connection part, and then welding member 212 of first welding assembly 210A welds second workpiece 22 and first electrical connection part; pressing member 213 of second welding assembly 210B presses down to fix third workpiece 23 and second electrical connection part, and then welding member 212 of second welding assembly 210B welds third workpiece 23 and second electrical connection part.

[0374] Dust removal device 300: The conveyor line 100 transmits the support 1 from the welding device 200 to the dust removal device 300. At the dust removal device 300, the dust removal hood 315 of the first dust removal component 310A moves down to cover the weld between the first electrical connection part and the second workpiece 22. The negative pressure part 316 is activated. The brush body of the first dust removal component 310A moves along the transmission direction of the conveyor line 100 and rotates to rub the weld, causing the welding slag to fall off and be discharged from the negative pressure part 316 to the outside of the dust removal hood 315. After the dust removal is completed, the dust removal hood 315 of the first dust removal component 310A moves up, and then the brush body moves up and is retracted into the dust removal hood 315. The brush body rotates to complete its own dust removal. Similarly, the dust cover 315 of the second dust removal component 310B moves down to cover the weld between the second electrical connection part and the third workpiece 23. The negative pressure part 316 is activated, and the brush body of the second dust removal component 310B moves along the transmission direction of the conveyor line 100 and rotates to rub the weld, causing the welding slag to fall off and be discharged from the negative pressure part 316 to the outside of the dust cover 315. After the dust removal is completed, the dust cover 315 of the second dust removal component 310B moves up, and then the brush body moves up and is retracted into the dust cover 315. The brush body rotates to complete its own dust removal, thus completing the dust removal.

[0375] The post-weld inspection device 902 detects the welding position: the conveyor line 100 transmits the support 1 from the dust removal device 300 to the post-weld inspection device 902. The post-weld inspection device 902 detects the position of the first electrical connection part welded to the second workpiece 22 and the position of the second electrical connection part welded to the third workpiece 23 to determine whether the welding meets the requirements.

[0376] Adhesive application device 400: Conveyor line 100 transmits support component 1 from post-weld inspection device 902 to adhesive application device 400. At adhesive application device 400, clamping part 442 first pulls the adhesive from the film roll 3, while pressing part 444 presses the pulled-out tape along the second direction Y, so that the pulled-out tape is in a taut state. Then, adhesive application component 420 moves along the first direction X to the adsorption position. At this time, adhesive application component 420 is exactly above the tape between clamping part 442 and pressing part 444. Then adhesive application component 420 adsorbs the adhesive. Then adhesive application component 420 returns along the first direction X to adhesive application frame 410. Then, the adhesive on the first adhesive application component 420A is used to bond the weld between the first electrical connection part and the third workpiece 23, and the adhesive on the second adhesive application component 420B is used to bond the weld between the second electrical connection part and the third workpiece 23, thereby completing the adhesive application.

[0377] The first workpiece 21, the second workpiece 22, and the third workpiece 23 are finally assembled.

[0378] Based on the aforementioned battery production line, such as Figure 39 As shown, this application also provides a battery manufacturing method, applied in the battery production line of any of the above embodiments, the battery manufacturing method comprising S101-S104:

[0379] S101: Place the first workpiece, the second workpiece, and the third workpiece on the conveyor line.

[0380] In some examples, the first workpiece 21, the second workpiece 22, and the third workpiece 23 constitute a workpiece assembly 2. Two workpiece assemblies 2 are placed on the support 1 and arranged sequentially along the conveying direction of the conveyor line 100 so as to facilitate the simultaneous processing of the two workpiece assemblies 2 and improve the production efficiency of the battery production line.

[0381] S102: Transfer the first workpiece, the second workpiece, and the third workpiece to the welding device.

[0382] In some examples, the conveyor line 100 includes multiple magnetically driven conveyor sections 110. Under the transmission of these multiple magnetically driven conveyor lines 100, a support member 1 carries the first workpiece 21, the second workpiece 22, and the third workpiece 23, and is then transported to the welding apparatus 200. Magnetic drive transmission eliminates mechanical wear, ensuring service life, and also reduces metal particles generated by mechanical wear, thus ensuring the cleanliness of the first workpiece 21, the second workpiece 22, and the third workpiece 23 on the support member 1.

[0383] S103: The first welding component of the welding device welds the first electrical connection of the first workpiece and the second workpiece.

[0384] In some examples, each welding assembly 210 includes a welding frame 211, a welding element 212, a pressing element 213, and a pressing drive element 214. S103: The first welding assembly 210A of the welding device 200 welds the first electrical connection portion of the first workpiece 21 and the second workpiece 22. Specifically, the pressing element 213 of the first welding assembly 210A presses the overlapping position of the first electrical connection portion and the second workpiece 22 along the second direction Y to fix the first electrical connection portion and the second workpiece 22, and then the welding element 212 of the first welding assembly 210A welds the first electrical connection portion of the first workpiece 21 and the second workpiece 22. Since the pressing element 213 presses the overlapping position of the first electrical connection portion and the second workpiece 22 along the second direction Y, the relative stability of the first electrical connection portion and the second workpiece 22 can be ensured, and then the welding element 212 of the first welding assembly 210A is used for welding, which can ensure the welding accuracy.

[0385] S104: The second welding assembly of the welding device welds the second electrical connection of the first workpiece and the third workpiece.

[0386] In some examples, each welding assembly 210 includes a welding frame 211, a welding element 212, a pressing element 213, and a pressing drive element 214. S104: The second welding assembly 210B of the welding device 200 welds the second electrical connection portion of the first workpiece 21 and the third workpiece 23. Specifically, the pressing element 213 of the second welding assembly 210B presses the overlap position of the second electrical connection portion and the third workpiece 23 along the second direction Y to fix the second electrical connection portion and the third workpiece 23, and then the welding element 212 of the second welding assembly 210B welds the second electrical connection portion and the third workpiece 23 of the first workpiece 21. Since the pressing element 213 presses the overlap position of the second electrical connection portion and the third workpiece 23 along the second direction Y, the relative stability of the second electrical connection portion and the third workpiece 23 can be ensured, and then the welding element 212 of the second welding assembly 210B is used for welding, which can ensure the welding accuracy.

[0387] It is understood that both the first welding component 210A and the second welding component 210B are welding components 210. This is only for clarity of description and does not imply that the structures of the first welding component 210A and the second welding component 210B are different. The welding operation performed by the first welding component 210A and the welding operation performed by the second welding component 210B can be synchronous or asynchronous. When they are asynchronous, the first welding component 210A can be performed first or the second welding component 210B can be performed first.

[0388] In some examples, along the first direction X, a first welding assembly 210A and a second welding assembly 210B are positioned opposite each other on both sides of the conveyor line 100. The welding operation of the first welding assembly 210A on the first workpiece 21 and the welding operation of the second welding assembly 210B on the first workpiece 21 are performed synchronously. This improves welding efficiency and thus increases the efficiency of battery production.

[0389] In other examples, the first welding assembly 210A and the second welding assembly 210B are arranged sequentially along the first direction X and the transmission direction of the conveyor line 100. When the support 1 is transferred to the first welding assembly 210A, the first welding assembly 210A first welds the second workpiece 22 and the first electrical connection. Then, when the support 1 is transferred downstream to the second welding assembly 210B, the second welding assembly 210B welds the third workpiece 23 and the second electrical connection. This efficiently completes the welding of the second workpiece 22 and the first electrical connection, as well as the welding of the third workpiece 23 and the second electrical connection.

[0390] With the above setup, the first workpiece 21, the second workpiece 22, and the third workpiece 23 move along the conveyor line 100. When the support 1 is transferred to the welding station corresponding to the welding device 200, the first welding assembly 210A can weld the first electrical connection and the second workpiece 22, and the second welding assembly 210B can weld the second electrical connection and the third workpiece 23, thereby completing the welding operation. By simultaneously setting two welding assemblies 210 at one welding station in the welding device 200 to complete the welding of the second workpiece 22 and the first electrical connection, and the third workpiece 23 and the second electrical connection, welding efficiency can be improved.

[0391] In some embodiments of this application, such as Figure 40 As shown, after the first welding assembly 210A welds the first electrical connection and the second workpiece 22, and the second welding assembly 210B welds the second electrical connection and the third workpiece 23, the battery manufacturing method further includes steps S105-S107:

[0392] S105: Transfer the first workpiece, the second workpiece, and the third workpiece to the dust removal device.

[0393] In some examples, the support 1 is located on the conveyor line 100 and is used to carry the first workpiece 21, the second workpiece 22 and the third workpiece 23.

[0394] S106: The first dust removal component of the dust removal device removes dust from the weld seam of the first electrical connection and the second workpiece.

[0395] In some examples, each dust removal assembly 310 includes a dust removal frame 311, a dust removal support 312, a cleaning component 313, and a dust removal drive 314. Thus, after the welding operation is performed, for the first dust removal assembly 310A, the dust removal drive 314 drives the dust removal support 312 and the cleaning component 313 together to move away from the conveyor line 100 along the second direction Y. Then, the support 1 is transferred to the underside of the cleaning component 313. Next, the dust removal drive 314 drives the dust removal support 312 and the cleaning component 313 together to move towards the conveyor line 100 along the second direction Y. When the cleaning component 313 comes into contact with the weld of the first electrical connection and the second workpiece 22, the cleaning component 313 moves to clean the weld slag at the weld. By moving the cleaning component 313 up and down along the second direction Y, before cleaning, it is ensured that the cleaning component 313 does not interfere with the first workpiece 21, the second workpiece 22, and the third workpiece 23. During cleaning, it can also ensure contact between the cleaning component 313 and the weld seam, thus ensuring the cleaning effect.

[0396] In some examples, each dust removal assembly 310 also includes a dust removal hood 315 and a negative pressure section 316. For the first dust removal assembly 310A, when the cleaning member 313 performs the cleaning operation, the dust removal hood 315 first covers the weld seam, and then the cleaning member 313 moves to clean the welding slag. At this time, the dust removal hood 315 can block the welding slag from splashing, and at the same time, the negative pressure section 316 sucks out the welding slag in the dust removal hood 315, so as to achieve a better effect of removing the welding slag at the weld seam.

[0397] In some examples, the cleaning component 313 includes a first cleaning support, a first cleaning drive 3131, a second cleaning drive 3132, and a brush body. When the first dust removal assembly 310A performs a cleaning operation, the brush body can rotate within the dust removal hood 315 and move along the transport direction of the conveyor line 100 to rub against the weld seam of the first electrical connection and the second workpiece 22, thereby cleaning the weld slag. After cleaning, the brush body moves along the second direction Y to retract into the dust removal hood 315, and then rotates to achieve self-cleaning.

[0398] S107: The second dust removal component of the dust removal device removes dust from the weld seams of the second electrical connection and the third workpiece.

[0399] In some examples, each dust removal assembly 310 includes a dust removal frame 311, a dust removal support 312, a cleaning component 313, and a dust removal drive 314. Thus, after the welding operation is performed, for the second dust removal assembly 310B, the dust removal drive 314 drives the dust removal support 312 and the cleaning component 313 together to move away from the conveyor line 100 along the second direction Y. Then, the support 1 is transferred to the underside of the cleaning component 313. Next, the dust removal drive 314 drives the dust removal support 312 and the cleaning component 313 together to move towards the conveyor line 100 along the second direction Y. When the cleaning component 313 moves to contact the weld seam of the second electrical connection and the third workpiece 23, the cleaning component 313 moves to clean the weld slag at the weld seam. By moving the cleaning component 313 up and down along the second direction Y, before cleaning, it is ensured that the cleaning component 313 does not interfere with the first workpiece 21, the second workpiece 22, and the third workpiece 23. During cleaning, it can also ensure contact between the cleaning component 313 and the weld seam, thus ensuring the cleaning effect.

[0400] In some examples, each dust removal assembly 310 also includes a dust removal hood 315 and a negative pressure section 316. For the second dust removal assembly 310B, when the cleaning member 313 performs the cleaning operation, the dust removal hood 315 first covers the weld seam, and then the cleaning member 313 moves to clean the welding slag. At this time, the dust removal hood 315 can block the welding slag from splashing, and at the same time, the negative pressure section 316 sucks out the welding slag in the dust removal hood 315, so as to achieve a better effect of removing the welding slag at the weld seam.

[0401] In some examples, the cleaning component 313 includes a first cleaning support, a first cleaning drive 3131, a second cleaning drive 3132, and a brush body. Thus, when the second dust removal assembly 310B performs a cleaning operation, the brush body can rotate within the dust removal hood 315 and move along the transport direction of the conveyor line 100 to rub against the weld seam of the second electrical connection and the third workpiece 23, thereby cleaning the weld slag. After cleaning, the brush body moves along the second direction Y to retract into the dust removal hood 315, and then rotates to achieve self-cleaning.

[0402] It is understood that both the first dust removal component 310A and the second dust removal component 310B are welded components 210. This is only for clarity of description and does not imply that the structures of the first dust removal component 310A and the second dust removal component 310B are different. The dust removal operation performed by the first dust removal component 310A and the dust removal operation performed by the second dust removal component 310B can be synchronized or asynchronous. When they are asynchronous, either the first dust removal component 310A or the second dust removal component 310B can be executed first.

[0403] With the above setup, after the welding process is completed, the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the dust removal assembly 310. The first dust removal assembly 310A removes dust from the weld seam of the first electrical connection and the second workpiece 22, while the second dust removal assembly 310B removes dust from the weld seam of the second electrical connection and the third workpiece 23. The dust removal operation can improve the smoothness of the weld surface and prevent stress concentration in the weld. Completing the dust removal through a single dust removal station ensures dust removal efficiency.

[0404] In some embodiments of this application, such as Figure 41 As shown, after the first welding assembly 210A welds the first electrical connection and the second workpiece 22, and the second welding assembly 210B welds the second electrical connection and the third workpiece 23, the battery manufacturing method further includes steps S108-S110:

[0405] S108: Transfer the first workpiece, the second workpiece, and the third workpiece to the adhesive application device.

[0406] In some examples, before the first workpiece 21, the second workpiece 22 and the third workpiece 23 are transferred to the adhesive application device 400, the support 1 is first transferred to the dust removal device 300. That is, the dust removal device 300 first completes the dust removal of the weld, and then the adhesive application device 400 applies adhesive to the weld. This can ensure the quality of the weld and the quality of the adhesive application.

[0407] S109: The first adhesive applicator of the adhesive applicator releases adhesive thereon to bond the weld seam of the first electrical connection and the second workpiece.

[0408] S110: The second adhesive applicator of the adhesive applicator releases adhesive on itself to bond the weld between the second electrical connection and the third workpiece.

[0409] It is understood that both the first adhesive application component 420A and the second adhesive application component 420B are adhesive application components 420. This is only for clarity of description and does not mean that the structures of the first adhesive application component 420A and the second adhesive application component 420B are different. The adhesive application operation can be performed first on the first adhesive application component 420A or second on the second adhesive application component 420B.

[0410] In some examples, the adhesive applicator 400 further includes an adhesive supply 440, a first adhesive application carrier 450, a first adhesive application drive 460, a second adhesive application carrier 470, and a second adhesive application drive 480. The second adhesive application carrier 470 first rises along the second direction Y to avoid components on the conveyor line 100. Then, the first adhesive application carrier 450 moves along the first direction X to the adsorption position. Next, the second adhesive application carrier 470 descends along the second direction Y to drive the adhesive application component 420 down to adsorb the adhesive. Then, the second adhesive application carrier 470 rises along the second direction Y to drive the adhesive application component 420 with the adsorbed adhesive up. Next, the first adhesive application carrier 450 moves along the first direction X to the release position. Then, the second adhesive application carrier 470 descends along the second direction Y. Next, the adhesive on the first adhesive application component 420A adheres to the weld between the first electrical connection and the second workpiece 22. The adhesive on the second adhesive application component 420B adheres to the weld between the second electrical connection and the third workpiece 23. The adhesive applicator 420 is raised and lowered by setting a second adhesive applicator 470 and a second adhesive applicator drive 480 to prevent interference between the components on the conveyor line 100 and the adhesive applicator 420.

[0411] With the above configuration, after the welding process is completed, the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the adhesive application component 420. Since the first adhesive application component 420A and the second adhesive application component 420B are arranged at intervals along the first direction X, the first adhesive application component 420A can release its adhesive to bond the weld between the first electrical connection and the second workpiece 22, and the second adhesive application component 420B can release its adhesive to bond the weld between the second electrical connection and the third workpiece 23. The adhesive application improves the strength of the welded joint and prevents corrosion of the weld by liquids or gases. The inclusion of the first adhesive application component 420A and the second adhesive application component 420B improves the efficiency of adhesive application.

[0412] In some embodiments of this application, such as Figure 42 As shown, after the first workpiece 21, the second workpiece 22, and the third workpiece 23 are placed on the support 1, and before the first workpiece 21, the second workpiece 22, and the third workpiece 23 are transferred to the welding device 200, the battery production method further includes S111-S112:

[0413] S111: Transfer the first workpiece, the second workpiece, and the third workpiece between the first positioning member and the second positioning member.

[0414] In some examples, the first positioning member 520 includes a positioning support portion 521, a positioning portion 522, and an elastic portion 523, which then transmits the support member 1 between the positioning portion 522 and the second positioning member 530.

[0415] S112: The first positioning member and the second positioning member move toward each other in a first direction to clamp the electrode assembly of the first workpiece.

[0416] It should be explained that the first positioning member 520 and the second positioning member 530 can move towards each other synchronously or asynchronously. When they are not synchronized, the second positioning member 530 can move to a reference position first, and then the first positioning member 520 can move to finally make the first positioning member 520 and the second positioning member 530 clamp the electrode assembly 2102.

[0417] In some examples, the first positioning member 520 includes a positioning support portion 521, a positioning portion 522, and an elastic portion 523. The second positioning member 530 first moves to a reference position and then stops. Then, the positioning support portion 521 approaches the second positioning member 530 along the first direction X, so that the positioning portion 522 and the second positioning member 530 finally come into contact. When the size of the electrode assembly 2102 along the first direction X is greater than a threshold, the elastic portion 523 undergoes elastic deformation under the reaction force of the electrode assembly 2102, and the positioning portion 522 moves relative to the positioning support portion 521 in a direction away from the second positioning member 530. This avoids hard contact between the positioning portion 522 and the electrode assembly 2102, reduces the probability of damage to the electrode assembly 2102, and also allows for positioning of larger-sized electrode assemblies 2102.

[0418] With the above settings, before performing the welding operation, the first workpiece 21, the second workpiece 22, and the third workpiece 23 will be transferred to the positioning device 500. At this time, the electrode assembly 2102 is located between the first positioning member 520 and the second positioning member 530. Along the first direction X, the first positioning member 520 and the second positioning member 530 clamp the electrode assembly 2102 to position the electrode assembly 2102. By positioning the electrode assembly 2102 along the first direction X, the distance between the electrode assembly 2102 and the second workpiece 22 and the third workpiece 23 is kept appropriate, and the first electrical connection part on the electrode assembly 2102 is positioned appropriately on the second workpiece 22, and the second electrical connection part is positioned appropriately on the third workpiece 23, so as to ensure the smooth completion of the subsequent welding operation and improve the welding accuracy.

[0419] In some embodiments of this application, such as Figure 43 As shown, S101: Placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line includes S1011-S1014:

[0420] S1011: The first transfer component of the first feeding device transfers the second workpiece of the first storage component to the conveyor line.

[0421] In some examples, the first storage component 610 includes a first storage section 611, a first roller conveyor section 612, a first transfer chamber 613, a first lifting component 614, and a first adsorption and fixing section 615. The first transfer component 620 includes a first transport section 621, a marking section 622, and a second transport section 623. The marking section 622 includes a marking circulation line 6221, a first loading and scanning module 6222, a marking marble 6223, a laser marking module 6224, and a post-marking scanning module 6225. Thus, the blister tray 4 in the first storage section 611 is transferred to the bottom of the first transfer chamber 613 via the first roller conveyor section 612. Inside the first transfer chamber 613, the first lifting component 614 lifts the blister tray 4 along the second direction Y. After being lifted into position, the first adsorption fixing part 615 fixes the blister tray 4. Then, the first conveying part 621 transfers the second workpiece 22 on the blister tray 4 to the marking and circulation line 6221. Under the transmission of the marking and circulation line 6221, the second workpiece 22 passes through the first loading and scanning mold. The second workpiece 22 is scanned by the laser marking module 6224 and then marked on the first surface of the second workpiece 22. After marking, the second workpiece 22 is scanned again by the marking and scanning module 6225. Then the second workpiece 22 is transferred to the flipping part 624, which flips the second workpiece 22 so that the second surface of the second workpiece 22 faces upward. Then the second conveying part 623 conveys the second workpiece 22 to the placement part 14 on the support 1 to complete the loading of the second workpiece 22.

[0422] S1012: The conveyor line transports the second workpiece to the second feeding device.

[0423] S1013: The second transfer component of the second feeding device transfers the third workpiece of the second storage component to the conveyor line.

[0424] In some examples, the second storage component 710 includes a second storage section 711, a second roller conveyor section 712, a second transfer chamber 713, a second lifting component 714, and a second adsorption and fixing section 715. The second transfer component 720 includes a third transport section 721, a preliminary positioning mechanism 722, and a fourth transport section 723. The preliminary positioning mechanism 722 includes a support platform, a first protrusion 7221, a second protrusion 7222, a first positioning block 7223, a second positioning block 7224, a first telescopic drive component 7225, and a second telescopic drive component 7226. Thus, the blister tray 4 in the second storage section 711 is transferred to the bottom of the second transfer chamber 713 via the second roller transfer section 712. Inside the second transfer chamber 713, the second lifting component 714 lifts the blister tray 4 along the second direction Y. After being lifted into place, the second adsorption fixing component 715 fixes the blister tray 4. Then, the third transport component 721 transports the third workpiece 23 on the blister tray 4 to the positioning space of the support platform. Then, the first positioning block 7223 and the second positioning block 7224 are driven to move so that the third workpiece 23 is clamped by the first protrusion 7221 and the first positioning block 7223 in the first direction X. In the transmission direction of the conveyor line 100, the third workpiece 23 is clamped by the second protrusion 7222 and the second positioning block 7224 to complete the positioning of the third workpiece 23. Then, the fourth transport component 723 transports the third workpiece 23 after positioning to another placement component 14 on the support component 1 to complete the loading of the third workpiece 23.

[0425] S1014: Place the first workpiece on the conveyor line.

[0426] In some examples, the battery production line also includes a transfer device 800, which can load the first workpiece 21 before the welding operation, thereby achieving automated loading of the first workpiece 21 and improving loading efficiency.

[0427] In some examples, the support 1 is used to carry the first workpiece 21, the second workpiece 22 and the third workpiece 23. Then the support 1 passes through the first feeding device 600, the second feeding device 700 and the transfer device 800 in sequence. The second workpiece 22 is placed on the support 1 at the first feeding device 600, the third workpiece 23 is placed on the support 1 at the second feeding device 700, and the first workpiece 21 is placed on the support 1 at the transfer device 800, thereby realizing the feeding.

[0428] With the above setup, before performing the welding operation, the second workpiece 22 at the first storage unit 610 is transferred to the conveyor line 100 using the first transfer component 620. When the second workpiece 22 is transferred to the second feeding device 700, the third workpiece 23 at the second storage unit 710 is transferred to the conveyor line 100 using the second transfer component 720. Finally, the first workpiece 21 is fed, thus completing the feeding of the second workpiece 22, the third workpiece 23, and the first workpiece 21. The separate feeding of the second workpiece 22, the third workpiece 23, and the first workpiece 21 facilitates the actual spatial layout.

[0429] In some embodiments of this application, such as Figure 44 As shown, after placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line in S101, and before transferring the first workpiece, the second workpiece, and the third workpiece to the welding device in S102, the battery production method further includes S113-S114:

[0430] S113: Transfer the first workpiece, the second workpiece, and the third workpiece to the pre-welding inspection device.

[0431] S114: The pre-welding inspection device detects the pre-welding positions of the first electrical connection and the second workpiece, and detects the pre-welding positions of the second electrical connection and the third workpiece.

[0432] It is understandable that the welding inspection device can, during inspection, first inspect the pre-welding positions of the first electrical connection and the second workpiece 22, and then inspect the pre-welding positions of the second electrical connection and the third workpiece 23. Alternatively, it can inspect the pre-welding positions of the second electrical connection and the third workpiece 23 first, and then inspect the pre-welding positions of the first electrical connection and the second workpiece 22. Or, it can inspect them simultaneously.

[0433] With the above settings, before performing the welding operation, the pre-welding inspection device 901 is used to inspect the pre-welding overlap positions of the first electrical connection part and the second workpiece 22, the second electrical connection part and the third workpiece 23, thereby ensuring the subsequent welding operation.

[0434] In some embodiments of this application, such as Figure 45 As shown, after the first welding assembly welds the first electrical connection and the second workpiece, and after the second welding assembly welds the second electrical connection and the third workpiece, before S108: transferring the first workpiece, the second workpiece, and the third workpiece to the adhesive applicator, the battery manufacturing method further includes S115-S116:

[0435] S115: Transfer the first workpiece, the second workpiece, and the third workpiece to the post-weld inspection device.

[0436] S116: The post-weld inspection device detects the welding positions of the first electrical connection and the second workpiece, and detects the welding positions of the second electrical connection and the third workpiece.

[0437] It is understandable that the welding inspection device can, during inspection, first inspect the welding positions of the first electrical connection and the second workpiece 22, and then inspect the welding positions of the second electrical connection and the third workpiece 23. Alternatively, it can inspect the welding positions of the second electrical connection and the third workpiece 23 first, and then inspect the welding positions of the first electrical connection and the second workpiece 22. Or, it can inspect them simultaneously.

[0438] Furthermore, if the battery production line includes a dust removal device 300, the aforementioned steps S115-S116S can occur between the welding device 200 and the dust removal device 300, or between the dust removal device 300 and the adhesive application device 400. The specific location depends on the position of the post-weld inspection device 902.

[0439] With the above settings, before performing the adhesive application operation, the welding positions of the first electrical connection and the second workpiece 22, the second electrical connection and the third workpiece 23 are detected by the post-weld inspection device 902, thereby ensuring the subsequent adhesive application operation.

[0440] In some embodiments of this application, such as Figure 46 As shown, after the first adhesive part is bonded to the weld of the first electrical connection part and the second workpiece, and the second adhesive part is bonded to the weld of the second electrical connection part and the third workpiece, the battery manufacturing method further includes S117-S118:

[0441] S117: Transfer the first workpiece, the second workpiece, and the third workpiece to the post-adhesion inspection device.

[0442] S118: The post-adhesive application detection device detects the adhesive application positions of the first electrical connection and the second workpiece, and detects the adhesive application positions of the second electrical connection and the third workpiece.

[0443] It is understandable that the post-adhesive application detection device 903 may, during detection, first detect the adhesive application positions of the first electrical connection and the second workpiece 22, and then detect the adhesive application positions of the second electrical connection and the third workpiece 23. Alternatively, it may detect the adhesive application positions of the second electrical connection and the third workpiece 23 first, and then detect the adhesive application positions of the first electrical connection and the second workpiece 22. Or, it may detect them simultaneously.

[0444] With the above settings, after the adhesive application operation is performed, the adhesive application detection device 903 will be used to detect the adhesive application positions of the first electrical connection part and the second workpiece 22, the second electrical connection part and the third workpiece 23, thereby determining whether the adhesive application meets the requirements and realizing full monitoring of the battery production process.

[0445] To better understand the battery production method in this application, the following describes a specific embodiment using a support 1 that carries the first workpiece 21, the second workpiece 22, and the third workpiece 23, and the support 1 is transported on a conveyor line 100.

[0446] The support component is transferred to the first feeding device.

[0447] The first transfer component of the first feeding device transfers the second workpiece from the first storage component to the support component.

[0448] The support component is transferred to the second feeding device.

[0449] The second transfer component of the second feeding device transfers the third workpiece from the second storage component to the support component.

[0450] Place the first workpiece on the support.

[0451] The transmission support is placed between the first positioning member and the second positioning member.

[0452] The first positioning member and the second positioning member move toward each other along a first direction to clamp the electrode assembly of the first workpiece.

[0453] The support component is transferred to the pre-welding inspection device.

[0454] The pre-welding inspection device detects the pre-welding positions of the first electrical connection and the second workpiece, and also detects the pre-welding positions of the second electrical connection and the third workpiece.

[0455] The support component is transferred to the welding device.

[0456] The first welding component of the welding apparatus welds the first electrical connection of the first workpiece and the second workpiece.

[0457] The second welding assembly of the welding device welds the second electrical connection of the first workpiece and the third workpiece.

[0458] The transfer support is sent to the dust removal device.

[0459] The first dust removal component of the dust removal device removes dust from the weld seam of the first electrical connection and the second workpiece.

[0460] The second dust removal component of the dust removal device removes dust from the weld seams of the second electrical connection and the third workpiece.

[0461] The support component is transferred to the post-weld inspection device.

[0462] The post-weld inspection device detects the welding positions of the first electrical connection and the second workpiece, and also detects the welding positions of the second electrical connection and the third workpiece.

[0463] The support component is transferred to the adhesive application device.

[0464] The first adhesive applicator of the adhesive applicator releases adhesive on itself to bond the weld between the first electrical connection and the second workpiece.

[0465] The second adhesive applicator of the adhesive applicator releases adhesive on itself to bond the weld between the second electrical connection and the third workpiece.

[0466] The support component is transferred to the post-adhesion testing device.

[0467] After the adhesive is applied, the detection device detects the adhesive application positions of the first electrical connection and the second workpiece, and also detects the adhesive application positions of the second electrical connection and the third workpiece.

[0468] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A battery production line, characterized by, include: A conveyor line is used to transport a first workpiece, a second workpiece, and a third workpiece along a first direction. The first workpiece includes a housing, an electrode assembly, and a first electrical connection portion and a second electrical connection portion disposed opposite to each other. The housing is sleeved on the outside of the electrode assembly. The first electrical connection portion and the second electrical connection portion are respectively connected to opposite sides of the electrode assembly and both extend outside the housing. The first electrical connection portion rests on the second workpiece, and the second electrical connection portion rests on the third workpiece. A welding device includes two welding components, both of which are located on the transport path of the conveyor line. The two welding components include a first welding component and a second welding component. When the first workpiece, the second workpiece, and the third workpiece are transported to the welding device, the first welding component is used to weld the first electrical connection part and the second workpiece, and the second welding component is used to weld the second electrical connection part and the third workpiece. Along the first direction, the first welding component and the second welding component are arranged opposite to each other on both sides of the conveyor line. A positioning device is located upstream of the welding device along the transmission direction of the conveyor line. The positioning device includes: The positioning frame, the first positioning element, the second positioning element, and the positioning drive element are arranged opposite to each other along the first direction, and both are slidably mounted on the positioning frame. The positioning drive includes a first positioning drive unit and a second positioning drive unit. The first positioning drive unit is used to drive the first positioning member to slide, and the second positioning drive unit is used to drive the second positioning member to slide. When the first workpiece, the second workpiece, and the third workpiece are transferred to the positioning device, the first positioning member and the second positioning member move towards each other along the first direction under the drive of the positioning drive member to clamp the electrode assembly, or move away from each other along the first direction to release the electrode assembly. Wherein, the first direction is the width direction of the conveyor line.

2. The battery production line according to claim 1, characterized in that, Each of the aforementioned welding components includes: The assembly includes a welding frame, a welded component, a pressing component, and a pressing drive component; the welded component is connected to the welding frame and is located above the conveyor line along a second direction; the pressing component is slidably disposed on the welding frame and located above the conveyor line along the second direction; the pressing drive component is connected to the pressing component and is used to drive the pressing component to move. When the first workpiece, the second workpiece, and the third workpiece are transferred to the first welding assembly, the welding member of the first welding assembly is used to weld the first electrical connection and the second workpiece, and the pressing member of the first welding assembly is used to press along the second direction to fix the first electrical connection and the second workpiece before welding the first electrical connection and the second workpiece. When the first workpiece, the second workpiece, and the third workpiece are transferred to the second welding assembly, the welding member of the second welding assembly is used to weld the second electrical connection and the third workpiece, and the pressing member of the second welding assembly is used to press along the second direction to fix the second electrical connection and the third workpiece before welding them; The second direction is the height direction of the conveyor line.

3. The battery production line according to claim 2, characterized in that, The welding apparatus further includes a replacement component, which is connected to the welding component. The replacement component includes a material rack, a gripping mechanism, and a gripping drive. Along the first direction, the material rack is located on one side of the welding frame and is used to store unused pressing parts and to recycle used pressing parts. The gripping mechanism is located between the welding component and the replacement component and is capable of moving between the material rack and the welding frame under the drive of the gripping drive. The gripping mechanism is used to grip the pressing parts.

4. The battery production line according to any one of claims 1 to 3, characterized in that, The battery production line also includes a dust removal device, which is located downstream of the welding device along the conveying direction of the conveyor line; the dust removal device includes: Two dust removal components are provided on the transmission path of the conveyor line along the first direction. The two dust removal components are arranged opposite to each other. When the first workpiece, the second workpiece, and the third workpiece are transmitted to the dust removal components, one dust removal component is provided on the side where the first electrical connection part is located and is used to remove dust from the weld seam of the first electrical connection part and the second workpiece. The other dust removal component is provided on the side where the second electrical connection part is located and is used to remove dust from the weld seam of the second electrical connection part and the third workpiece.

5. The battery production line according to claim 4, characterized in that, Each of the dust removal components includes: The system includes a dust removal frame, a dust removal support, a cleaning component, and a dust removal drive component. The dust removal support is slidably disposed on the dust removal frame along a second direction. The cleaning component is movably disposed on the dust removal support and is located above the conveyor line along the second direction. The dust removal drive component is connected to the dust removal support and is used to drive the dust removal support to move. The second direction is the height direction of the conveyor line.

6. The battery production line according to claim 5, characterized in that, Each of the dust removal components further includes: a dust removal hood and a negative pressure section, the dust removal hood being disposed on the dust removal carrier, the dust removal hood having an opening facing the conveyor line in the second direction; the cleaning component being at least partially movably disposed inside the dust removal hood; the negative pressure section communicating with the interior of the dust removal hood for sucking out welding slag.

7. The battery production line of claim 5, wherein, The cleaning component includes: a first cleaning support, a first cleaning drive, a second cleaning drive, and a brush body. Along the transmission direction of the conveyor line, the first cleaning support is slidably disposed on the dust removal support, and the first cleaning drive is connected to the first cleaning support for driving the first cleaning support to move. The brush body and the second cleaning drive are disposed on the first cleaning support. The brush body is rotatably disposed on the first cleaning support about the transmission direction of the conveyor line, and the second cleaning drive is connected to the brush body for driving the brush body to rotate or swing.

8. The battery production line according to claim 7, characterized in that, Each of the dust removal components further includes a dust removal hood disposed on the dust removal carrier; the cleaning component further includes a second cleaning carrier and a third cleaning drive, the second cleaning carrier is slidably disposed on the first cleaning carrier along the second direction, the brush body and the second cleaning drive are disposed on the second cleaning carrier, and the brush body is located inside the dust removal hood; the third cleaning drive is connected to the second cleaning carrier and is used to drive the second cleaning carrier to move.

9. The battery production line according to any one of claims 1 to 3, characterized in that, The battery production line also includes an adhesive application device, which is located downstream of the welding device along the conveying direction of the conveyor line; the adhesive application device includes: The adhesive applicator frame and multiple adhesive applicators are provided. The adhesive applicators are movably mounted on the adhesive applicator frame and located above the conveyor line along the second direction. The adhesive applicators are used to absorb or release adhesive. The multiple adhesive applicators include a first adhesive applicator and a second adhesive applicator. Along the first direction, the first adhesive applicator and the second adhesive applicator are arranged at intervals. When the first workpiece, the second workpiece, and the third workpiece are transferred to the adhesive applicator, the first adhesive applicator is used to release the adhesive thereon to bond the weld between the first electrical connection and the second workpiece; the second adhesive applicator is used to release the adhesive thereon to bond the weld between the second electrical connection and the third workpiece. The second direction is the height direction of the conveyor line.

10. The battery production line according to claim 9, characterized in that, The adhesive applicator further includes an adhesive supply component, a first adhesive applicator support component, and a first adhesive applicator drive component. Along the first direction, the adhesive supply component and the adhesive applicator frame are respectively located on opposite sides of the conveyor line. The adhesive supply component is used to provide the adhesive. The first adhesive application carrier is connected to the adhesive application frame and can slide between the adsorption position and the release position along the first direction. The adhesive application component is movably connected to the first adhesive application carrier. The first adhesive application drive component is connected to the first adhesive application carrier and is used to drive the first adhesive application carrier to move. At the adsorption position, the first adhesive applicator is located at the adhesive supply unit and is used to adsorb the adhesive, and the second adhesive applicator is located at the adhesive supply unit and is used to adsorb the adhesive. In the release position, the first adhesive patch is used to release the adhesive thereon to bond the weld between the first electrical connection and the second workpiece, and the second adhesive patch is used to release the adhesive thereon to bond the weld between the second electrical connection and the third workpiece.

11. The battery production line according to claim 10, characterized in that, Along the first direction, the arrangement order of the first adhesive component and the second adhesive component is the opposite of the arrangement order of the first electrical connection portion and the second electrical connection portion.

12. The battery production line of claim 10, wherein, The adhesive supply component includes an adhesive supply frame, an adhesive clamping part, an adhesive clamping drive part, an adhesive pressing part, and an adhesive pressing drive part. The adhesive supply frame is used to hold the film roll, which is rotatable around the first direction. Along the transmission direction of the conveyor line, the adhesive clamping part is located on one side of the film roll and slidably disposed on the adhesive supply frame. The adhesive clamping part is used to clamp the tape head of the film roll. The adhesive clamping drive part is connected to the adhesive clamping part and is used to drive the adhesive clamping part to move. Along the second direction, the adhesive pressing part is slidably disposed on the adhesive supply frame and is used to slide to press and tighten the pulled-out tape. The adhesive pressing drive part is connected to the adhesive pressing part and is used to drive the adhesive pressing part to move. At the adsorption position, along the transmission direction of the conveyor line, both the first adhesive applicator and the second adhesive applicator are located above the tape between the pressing part and the clamping part.

13. The battery production line of claim 10, wherein, The number of adhesive supply components is two, and they are arranged sequentially along the transmission direction of the conveyor line. Along the first direction, one of the adhesive supply components is located on the movement path of the first adhesive application carrier.

14. The battery production line according to claim 1, characterized in that, The first positioning member includes a positioning support part, a positioning part, and an elastic part. Along the first direction, the positioning support part is slidably disposed on the positioning frame. Along the first direction, the positioning part is movably disposed on the positioning support part and is opposite to and spaced apart from the second positioning member. The elastic part is disposed between the positioning part and the positioning support part. When the electrode assembly is clamped between the second positioning member and the positioning part, and the dimension of the electrode assembly along the first direction is greater than a threshold, the elastic part undergoes elastic deformation under the reaction of the electrode assembly, and the positioning part moves away from the second positioning member relative to the positioning support part.

15. The battery production line according to any one of claims 1 to 3, characterized in that, The battery production line also includes a first feeding device and a second feeding device. Along the transmission direction of the conveyor line, the first feeding device and the second feeding device are arranged in sequence and are both located upstream of the welding device. The first feeding device includes a first storage component and a first transfer component. The first storage component is used to store the second workpiece, and the first transfer component is used to transfer the second workpiece to the conveyor line. The second feeding device includes a second storage component and a second transfer component. The second storage component is used to store the third workpiece. When the second workpiece is transferred to the second feeding device, the second transfer component is used to transfer the third workpiece to the conveyor line.

16. The battery production line of claim 15, wherein, The first transfer component includes a first transport section, a marking section, and a second transport section. The first transport section is used to transport the second workpiece on the first storage component to the marking section; the marking section is used to mark the second workpiece; and the second transport section is used to transport the marked second workpiece to the conveyor line.

17. The battery production line of claim 16, wherein, Along the second direction, the second workpiece includes a first surface and a second surface opposite each other. The marking part is used to mark the first surface. Before the marking part marks the first surface, the first surface faces upward along the second direction. The first transfer member also includes a flipping part. After the marking part marks the second surface and before the second transport part transports the workpiece, the flipping part is used to flip the second workpiece so that the second surface faces upward along the second direction. The second surface is used to support the first electrical connection part. The second direction is the height direction of the conveyor line.

18. The battery production line according to claim 15, characterized in that, The second transfer component includes a third transport unit, a preliminary positioning mechanism, and a fourth transport unit. The third transport unit is used to transport the third workpiece on the second storage unit to the preliminary positioning mechanism. The preliminary positioning mechanism is used to position the third workpiece along the first direction and the transmission direction of the conveyor line. The fourth transport unit is used to transport the third workpiece after positioning on the preliminary positioning mechanism to the conveyor line.

19. The battery production line of claim 18, wherein, The preliminary positioning mechanism includes a support platform, a first protrusion, a second protrusion, a first positioning block, a second positioning block, a first telescopic drive member, and a second telescopic drive member. Along the first direction, the first protrusion and the first positioning block are spaced apart on the support platform, and the first positioning block can move along the first direction under the drive of the first telescopic drive member to approach or move away from the first protrusion. Along the transmission direction of the conveyor line, the second protrusion and the second positioning block are spaced apart on the support platform, and the second positioning block can move along the transmission direction of the conveyor line under the drive of the second telescopic drive member to approach or move away from the first protrusion. The first protrusion, the second protrusion, the first positioning block, and the second positioning block form a positioning space for placing the third workpiece.

20. The battery production line according to any one of claims 1 to 3, characterized by, The battery production line also includes a transfer device located upstream of the welding device along the transport direction of the conveyor line. The transfer device is used to transfer the first workpiece to the conveyor line.

21. The battery production line according to any one of claims 1 to 3, characterized by, The battery production line also includes a dust removal device, an adhesive application device, a positioning device, a first feeding device, a second feeding device, and a transfer device. Along the transmission direction of the conveyor line, the first feeding device, the second feeding device, the transfer device, the positioning device, the welding device, the dust removal device, and the adhesive application device are sequentially arranged on the transmission path of the conveyor line.

22. The battery production line of claim 21, wherein, The battery production line also includes: A pre-welding inspection device, a post-welding inspection device, and a post-adhesive application inspection device are provided. Along the transport direction of the conveyor line, the pre-welding inspection device is located between the positioning device and the welding device. When the first workpiece, the second workpiece, and the third workpiece are transported to the pre-welding inspection device, the pre-welding inspection device is used to detect the pre-welding position of the first electrical connection portion on the second workpiece and the pre-welding position of the second electrical connection portion on the third workpiece. Along the transport direction of the conveyor line, the post-welding inspection device is located between the welding device and the adhesive application device. When the first workpiece, the second workpiece, and the third workpiece are transported to the pre-welding inspection device, the pre-welding inspection device is used to detect the pre-welding position of the first electrical connection portion on the second workpiece and the post-welding position of the second electrical connection portion on the third workpiece. When the third workpiece is transferred to the post-weld inspection device, the post-weld inspection device is used to inspect the welding position of the first electrical connection and the second workpiece, and to inspect the welding position of the second electrical connection and the third workpiece; along the transmission direction of the conveyor line, the post-adhesive application inspection device is located after the adhesive application device. When the first workpiece, the second workpiece, and the third workpiece are transferred to the post-adhesive application inspection device, the post-adhesive application inspection device is used to inspect the adhesive application position of the first electrical connection and the second workpiece, and to inspect the adhesive application position of the second electrical connection and the third workpiece.

23. The battery production line of claim 21, wherein, Along the transmission direction of the conveyor line, the conveyor line includes multiple magnetic drive conveyor sections arranged in succession. The first feeding device, the second feeding device, the transfer device, the positioning device, the welding device, the dust removal device, and the adhesive application device are at least distributed on the transmission paths of two of the magnetic drive conveyor sections.

24. A method of producing a battery, characterized by, Applied to the battery production line of any one of claims 1 to 23, the battery production method comprises: Place the first workpiece, the second workpiece, and the third workpiece on the conveyor line; transfer the first workpiece, the second workpiece, and the third workpiece to the welding device; The first welding component of the welding device welds the first electrical connection portion of the first workpiece and the second workpiece. The second welding component of the welding apparatus welds the second electrical connection portion of the first workpiece and the third workpiece.

25. The battery production method according to claim 24, wherein, After the first welding assembly welds the first electrical connection and the second workpiece, and the second welding assembly welds the second electrical connection and the third workpiece, the battery manufacturing method further includes: The first workpiece, the second workpiece, and the third workpiece are transferred to the dust removal device; The first dust removal component of the dust removal device removes dust from the weld seams of the first electrical connection and the second workpiece. The second dust removal component of the dust removal device removes dust from the weld seams of the second electrical connection and the third workpiece.

26. The battery production method according to claim 24, wherein After the first welding assembly welds the first electrical connection and the second workpiece, and the second welding assembly welds the second electrical connection and the third workpiece, the battery manufacturing method further includes: The first workpiece, the second workpiece, and the third workpiece are transferred to the adhesive application device; The first adhesive applicator of the adhesive applicator releases adhesive on itself to bond the weld between the first electrical connection and the second workpiece. The second adhesive applicator of the adhesive applicator releases adhesive on itself to bond the weld between the second electrical connection and the third workpiece.

27. The battery production method according to claim 24, wherein After placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line, and before transferring the first workpiece, the second workpiece, and the third workpiece to the welding device, the battery production method further includes: Transfer the first workpiece, the second workpiece, and the third workpiece between the first positioning member and the second positioning member; The first positioning member and the second positioning member move toward each other along a first direction to clamp the electrode assembly of the first workpiece.

28. The battery production method according to claim 24, wherein The placement of the first workpiece, the second workpiece, and the third workpiece on the conveyor line includes: The first transfer component of the first feeding device transfers the second workpiece of the first storage container to the conveyor line; The conveyor line transports the second workpiece to the second feeding device; The second transfer component of the second feeding device transfers the third workpiece from the second storage container to the conveyor line; The first workpiece is placed on the conveyor line.

29. The battery production method according to claim 24, wherein After placing the first workpiece, the second workpiece, and the third workpiece on the conveyor line, and before transferring the first workpiece, the second workpiece, and the third workpiece to the welding device, the battery production method further includes: The first workpiece, the second workpiece, and the third workpiece are transferred to the pre-welding inspection device; The pre-welding inspection device detects the pre-welding positions of the first electrical connection and the second workpiece, and also detects the pre-welding positions of the second electrical connection and the third workpiece.

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