Double-row battery cell power module welding and assembling equipment

Abstract

The invention discloses double-row battery cell power module welding and assembling equipment which is used for positioning and assembling double-row battery cells, a middle plate, a pair of end plates and a pair of side plates and comprises a bearing platform and further comprises a Z-direction pressing module, an end plate pressing module, a side plate assembling module and a welding seam pressing module which are arranged on the bearing platform. Automatic assembly of the modules can be achieved, the assembly speed is high, and the precision is high; through pressing and positioning mechanisms in multiple directions, the welding size is guaranteed; a dust collection device is arranged, and the laser welding quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell assembly welding, and particularly relates to a welding and assembly device for a double-row battery cell power module. Background Art

[0002] With the rapid development of electric vehicles, the structural optimization of power battery modules has also accelerated; a double-row battery cell power module can improve the energy density of products, reduce the number of components, lower the operating costs of vehicle manufacturers, and improve production efficiency; in the prior art, the assembly equipment for battery cell modules is mostly for single-row battery cells, and the structure of a double-row battery cell power module is more complex, with high assembly precision requirements, so a welding and assembly device for a double-row battery cell power module is needed. Summary of the Invention

[0003] According to an embodiment of the present invention, there is provided a welding and assembly device for a double-row battery cell power module, which is used for the positioning and assembly of double-row battery cells, a middle plate, a pair of end plates and a pair of side plates, and includes a bearing platform, and further includes a Z-direction pressing module, an end plate pressing module, a side plate assembly module and a weld pressing module arranged on the bearing platform; The double-row battery cells are placed side by side on the assembly station of the bearing platform, the middle plate is placed between the double-row battery cells, a pair of end plates are respectively placed at both ends of the double-row battery cells, and a pair of side plates are coated with glue on the sides in contact with the battery cells and are respectively placed on both sides of the double-row battery cells; The Z-direction pressing module is arranged above the assembly station, aligns the double-row battery cells and the end plates, and presses the double-row battery cells and a pair of end plates in the vertical direction; The end plate pressing module is arranged at both ends of the assembly station, and drives a pair of end plates to be respectively pressed against both ends of the double-row battery cells; The side plate assembly module is arranged on both sides of the assembly station, and drives a pair of side plates to be respectively pressed against both sides of the double-row battery cells; The weld pressing module is arranged at the four corners of the assembly station, and drives the adjacent side plates and end plates to be closely attached.

[0004] Further, the Z-direction pressing module includes: a transplanting mechanism, an aligning mechanism, a battery cell downward pressing mechanism and an end plate downward pressing mechanism; The transplanting mechanism is fixed on the bearing platform, the output end of the transplanting mechanism is fixed with the aligning mechanism, the battery cell downward pressing mechanism and the end plate downward pressing mechanism, and the transplanting mechanism drives the aligning mechanism, the battery cell downward pressing mechanism and the end plate downward pressing mechanism to approach or move away from the assembly station along the length direction of the middle plate; The aligning mechanism is used for aligning the double-row battery cells and a pair of end plates; The battery cell downward pressing mechanism presses down and compresses the electrode posts of the double-row battery cells; The end plate downward pressing mechanism presses down and compresses a pair of end plates.

[0005] Further, the centering mechanism includes: a pair of centering components, which are symmetrically arranged on the transplanting mechanism and are respectively arranged on both sides of the assembly station; The centering component includes: a mounting bracket, a centering frame, a lifting cylinder, a first vertical guide rail, a horizontal guide rail, a centering cylinder, and a centering member; The mounting bracket is fixed to the output end of the transplanting mechanism; The lifting cylinder is mounted on the mounting bracket, and the output end of the lifting cylinder is connected to the centering frame; The centering frame is provided with a first vertical guide rail, and the centering frame is slidably connected to the mounting bracket through the first vertical guide rail; The centering cylinder is arranged on the centering frame; The centering member is provided with a horizontal guide rail, and the centering member is slidably connected to the centering frame through the horizontal guide rail. The horizontal guide rail is perpendicular to the middle plate, and the centering member is connected to the output end of the centering cylinder; The lifting cylinder drives the centering member to move in the vertical direction, and the centering cylinder drives the centering member to approach the side surface of the double-row battery cells.

[0006] Further, the battery cell pressing mechanism includes: a pressing cylinder, two connecting frames, two groups of second vertical guide rails, a pressing plate, a double-row U-shaped pressing rod, and a rubber-coated roller; The pressing cylinder is fixed on the transplanting mechanism, and the output end of the pressing cylinder is connected to the top surface of the pressing plate; Two groups of second vertical guide rails are fixed on the transplanting mechanism and are oppositely arranged at both ends of the transplanting mechanism; The two connecting frames are respectively slidably connected to the two groups of second vertical guide rails and are fixed to the top surface of the pressing plate; The double-row U-shaped pressing rods are arranged on the bottom surface of the pressing plate and correspond to the double-row battery cells one by one. The opening of the U-shaped pressing rod faces the battery cell, and rubber-coated rollers are installed at both ends of each U-shaped pressing rod, and the rubber-coated rollers press on the pole columns of the battery cells; The pressing cylinder drives the pressing plate to move downward, driving the double-row U-shaped pressing rods to press on the pole columns of the double-row battery cells.

[0007] Further, the U-shaped pressing rod is slidably connected to the bottom plate through a pair of guide posts. The top end of the guide post is slidably connected to the pressing plate, the bottom end of the guide post is connected to the U-shaped pressing rod, and a first spring is sleeved on the guide post. The two ends of the first spring are respectively abutted against the bottom plate and the U-shaped pressing rod.

[0008] Further, the end plate pressing module includes: a fixed-end pressing block, a movable-end pressing block, and a pressing electric cylinder; The fixed-end pressing block and the pressing electric cylinder are arranged on the bearing platform; The output end of the pressing electric cylinder is connected to the movable-end pressing block, and the pressing electric cylinder drives the movable-end pressing block to approach the fixed-end pressing block to press a pair of end plates.

[0009] Further, the side plate assembly module includes: four side plate positioning mechanisms and a pair of assembly components; A pair of assembly components and four side plate positioning mechanisms are arranged on the bearing platform. The pair of assembly components are symmetrically arranged on both sides of the assembly station respectively, and one side plate positioning mechanism is arranged at each end of each assembly component. The side plate positioning mechanism is used for positioning before side plate assembly. The assembly component includes: a servo drive, a push plate, a pair of first guide rails and several suction cups; The servo drive is fixed on the bearing platform, and the output end of the servo drive is connected to the push plate; A pair of first guide rails are fixed on the bearing platform in parallel and are slidably connected to the push plate. The first guide rails are perpendicular to the middle plate; Several suction cups are distributed on the contact surface between the push plate and the side plate for adsorbing and fixing the side plate; The servo drive drives the push plate to contact the side plate and drives the side plate to press against the double-row battery cells.

[0010] Furthermore, the side plate positioning mechanism includes: a first air cylinder, a second air cylinder, a third air cylinder, a positioning frame, a positioning block, a movable plate, a fixed plate, a second guide rail and a third guide rail; The first air cylinder is arranged on the bearing platform, and the output end of the first air cylinder is connected to the positioning frame; The second guide rail, the second air cylinder and the fixed plate are fixed on the positioning frame, and the second guide rail is parallel to the length direction of the end plate; The positioning block is slidably connected to the second guide rail and is connected to the output end of the second air cylinder; The third air cylinder and the third guide rail are fixed on the positioning block, and the third guide rail is parallel to the length direction of the side plate; The movable plate is slidably connected to the third guide rail and is connected to the output end of the third air cylinder. The movable plate has an L-shaped bayonet, and the side plate is placed between the fixed plate and the L-shaped bayonet; The first air cylinder drives the positioning frame to move along the length direction of the side plate; The second air cylinder drives the movable plate to approach the fixed plate to position the side plate in the width direction; The third air cylinder drives the movable plate to move along the length direction of the side plate to position the side plate in the length direction.

[0011] Furthermore, the weld pressing module includes: four groups of pressing components. The four groups of pressing components are respectively arranged at the four corners of the assembly station. Each group of pressing components includes an X-direction pressing component and a Y-direction pressing component. The Y-direction pressing component presses the side plate and the end plate along the length direction of the end plate, and the X-direction pressing component presses the curled edge of the side plate against the end plate; The Y-direction pressing component includes: a first support frame, a Y-direction pressing air cylinder, a fourth guide rail, a connecting block, a telescopic pressing column; The first support frame is fixed on the bearing platform; The Y-direction pressing air cylinder and the fourth guide rail are fixed on the first support frame; The connecting block is slidably arranged on the fourth guide rail and is connected to the output end of the Y-direction pressing cylinder; The telescopic pressing column is arranged on the connecting block, and the telescopic pressing column is made of copper; The Y-direction pressing cylinder drives the telescopic pressing column to move, and flexibly presses the side of the side plate against the end plate; The X-direction pressing assembly includes: a second support frame, an X-direction pressing cylinder, a fifth guide rail and a pressing block; The second support frame is fixed on the bearing platform; The X-direction pressing cylinder and the fifth guide rail are fixed on the second support frame; The pressing block is slidably arranged on the fifth guide rail and is connected to the output end of the X-direction pressing cylinder. The X-direction pressing cylinder drives the pressing block to move, and presses the curled edge of the side plate against the end plate.

[0012] Furthermore, it further includes: a dust suction pipe and an explosion-proof dust collector; The dust suction pipe is fixed on the end plate pressing module and the weld pressing module and is opposite to the weld between the end plate and the side plate; The explosion-proof dust collector is connected to the dust suction pipe and is used for adsorbing the dust generated during welding.

[0013] The double-row battery cell power module welding and assembling equipment according to the embodiment of the present invention can realize the automatic assembly of the module, with fast assembly speed and high precision; through the pressing and positioning mechanisms in multiple directions, the welding dimensions are guaranteed; and a dust suction device is equipped to ensure the quality of laser welding.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the double-row battery cell power module welding and assembling equipment according to the embodiment of the present invention; Figure 2 is a top view schematic diagram of the double-row battery cell power module welding and assembling equipment according to the embodiment of the present invention; Figure 3 is a top view schematic diagram of the double-row battery cell power module welding and assembling equipment without the Z-direction pressing module according to the embodiment of the present invention; Figure 4 is a schematic structural diagram of the battery cell pressing mechanism of the double-row battery cell power module welding and assembling equipment according to the embodiment of the present invention; Figure 5 is a schematic structural diagram of the centering mechanism of the double-row battery cell power module welding and assembling equipment according to the embodiment of the present invention; Figure 6 is a schematic structural diagram of the side plate positioning mechanism of the double-row battery cell power module welding and assembling equipment according to the embodiment of the present invention; Figure 7 Schematic diagram of the assembly component of the double-row battery cell power module welding and assembly equipment according to an embodiment of the present invention; Figure 8 Schematic diagram of the Y-direction pressing component of the double-row battery cell power module welding and assembly equipment according to an embodiment of the present invention; Figure 9 Schematic diagram of the X-direction pressing component of the double-row battery cell power module welding and assembly equipment according to an embodiment of the present invention; Figure 10 Schematic diagram of the end plate pressing module of the double-row battery cell power module welding and assembly equipment according to an embodiment of the present invention.

[0016] Reference numerals: bearing platform 1, double-row battery cells 21, middle plate 22, side plates 23, end plate 24, dust suction pipe 3; Transplanting mechanism 41, centering mechanism 42, mounting frame 421, centering frame 422, lifting cylinder 423, first vertical guide rail 424, horizontal guide rail 425, centering cylinder 426, centering member 427; battery cell pressing-down mechanism 43, pressing-down cylinder 431, connecting frame 432, second vertical guide rail 433, pressing plate 434, U-shaped pressing rod 435, rubber-coated roller 436, guide post 437, first spring 438; end plate pressing-down mechanism 44; End plate pressing module 5, fixed-end pressing block 51, movable-end pressing block 52, pressing electric cylinder 53; Side plate positioning mechanism 61, first cylinder 611, second cylinder 612, third cylinder 613, positioning frame 614, positioning block 615, movable plate 616, fixed plate 617, second guide rail 618, third guide rail 619; assembly component 62, servo drive member 621, push plate 622, first guide rail 623, suction cup 624; Y-direction pressing component 71, first support frame 711, Y-direction pressing cylinder 712, fourth guide rail 713, connecting block 714, telescopic pressing column 715; X-direction pressing component 72, second support frame 721, X-direction pressing cylinder 722, fifth guide rail 723 and pressing block 724. Detailed implementation manners

[0017] The following will describe in detail the preferred embodiments of the present invention with reference to the accompanying drawings and further elaborate on the present invention.

[0018] First, it will be combined with Figures 1 to 10 Describe the double-row battery cell power module welding and assembly equipment according to an embodiment of the present invention, which has a wide range of application scenarios.

[0019] Such as Figures 1 to 10As shown in the figure, the welding and assembly equipment for the double-row battery cell power module according to the embodiment of the present invention is used for the positioning and assembly of double-row battery cells 21, a middle plate 22, a pair of end plates 24 and a pair of side plates 23. The double-row battery cells 21 are multiple battery cells 21 arranged in two rows, and it includes a carrying platform 1, and also includes a Z-direction pressing module, an end plate pressing module 5, a side plate assembly module and a weld pressing module provided on the carrying platform 1. In this embodiment, a pair of side plates 23 and the middle plate 22 are parallel to each other, the length direction of the side plate 23 is the X direction, the side plate 23 is perpendicular to the end plate 24, and the length direction of the end plate 24 is the Y direction.

[0020] Specifically, as Figures 1 to 3 shown, in this embodiment, the double-row battery cells 21 are placed side by side on the assembly station of the carrying platform 1, the middle plate 22 is placed between the double-row battery cells 21, a pair of end plates 24 are respectively placed at both ends of the double-row battery cells 21, glue is coated on the sides of a pair of side plates 23 that are in contact with the battery cells 21, and they are respectively placed on both sides of the double-row battery cells 21. The two sides of the side plate 23 have flanges, that is, the side plate 23 is in an n shape; the Z-direction pressing module is arranged above the assembly station to align the double-row battery cells 21 and the end plates 24, and press the double-row battery cells 21 and a pair of end plates 24 in the vertical direction; the end plate pressing module 5 is arranged at both ends of the assembly station to drive a pair of end plates 24 to be respectively pressed against both ends of the double-row battery cells 21; the side plate assembly module is arranged on both sides of the assembly station to drive a pair of side plates 23 to be respectively pressed against both sides of the double-row battery cells 21; the weld pressing module is arranged at the four corners of the assembly station to drive the adjacent side plates 23 and end plates 24 to fit tightly. Through this device, the automatic assembly of the double-row battery cell 21 module can be realized, with fast assembly speed and high precision.

[0021] Specifically, as Figures 1 to 5As shown in the figure, in this embodiment, the Z-direction pressing module includes: a transplanting mechanism 41, a centering mechanism 42, a battery cell pressing mechanism 43, and an end plate pressing mechanism 44; the transplanting mechanism 41 is fixed on the carrying platform 1, and the output end of the transplanting mechanism 41 is fixed with the centering mechanism 42, the battery cell pressing mechanism 43, and the end plate pressing mechanism 44. The transplanting mechanism 41 drives the centering mechanism 42, the battery cell pressing mechanism 43, and the end plate pressing mechanism 44 to approach or move away from the assembly station along the length direction of the middle plate 22; the transplanting mechanism 41 adopts an existing transplanting module; the centering mechanism 42 is used for centering the double-row battery cells 21 and a pair of end plates 24 to ensure the accuracy of subsequent assembly and welding; the battery cell pressing mechanism 43 presses down and compresses the poles of the double-row battery cells 21; the end plate pressing mechanism 44 presses down and compresses a pair of end plates 24. By the battery cell pressing mechanism 43 and the end plate pressing mechanism 44, it is avoided that the battery cells 21 move upward when being pressed in the length direction, ensuring the assembly accuracy. In this embodiment, there are two groups of end plate pressing mechanisms 44, which are respectively fixed at both ends of the battery cell pressing mechanism 43. Each group includes a cylinder and a pressing rod, and the cylinder drives the pressing rod to press on the end plate 24 to prevent it from moving upward when being pressed in the X direction.

[0022] Further, as Figure 5 shown in the figure, in this embodiment, the centering mechanism 42 includes: a pair of centering components, which are symmetrically arranged on the transplanting mechanism 41 and are respectively arranged on both sides of the assembly station. The pair of centering components clamp each other to achieve centering of the double-row battery cells 21 and the end plates 24 in the width direction. The centering component includes: a mounting frame 421, a centering frame 422, a lifting cylinder 423, a first vertical guide rail 424, a horizontal guide rail 425, a centering cylinder 426, and a centering part 427; the mounting frame 421 is fixed at the output end of the transplanting mechanism 41; the lifting cylinder 423 is installed on the mounting frame 421, and the output end of the lifting cylinder 423 is connected to the centering frame 422; the centering frame 422 is provided with a first vertical guide rail 424, and the centering frame 422 is slidably connected to the mounting frame 421 through the first vertical guide rail 424; the centering cylinder 426 is arranged on the centering frame 422; the centering part 427 is provided with a horizontal guide rail 425, and the centering part 427 is slidably connected to the centering frame 422 through the horizontal guide rail 425. The horizontal guide rail 425 is perpendicular to the middle plate 22, and the centering part 427 is connected to the output end of the centering cylinder 426; the lifting cylinder 423 drives the centering part 427 to move in the vertical direction to avoid subsequent side plate 23 assembly actions. The centering cylinder 426 drives the centering part 427 to approach the side surface of the double-row battery cells 21 to achieve centering and positioning of the double-row battery cells 21. The centering part 427 can adopt a centering plate 22 or a centering rod, etc. The overall structure is compact, easy to realize standardized application, and has strong compatibility.

[0023] Further, as Figure 4As shown in the figure, in this embodiment, the battery cell pressing mechanism 43 includes: a pressing cylinder 431, two connecting frames 432, two groups of second vertical guide rails 433, a pressing plate 434, a double-row U-shaped pressing rod 435, and a rubber-coated roller 436; the pressing cylinder 431 is fixed on the transplanting mechanism 41, and the output end of the pressing cylinder 431 is connected to the top surface of the pressing plate 434; two groups of second vertical guide rails 433 are fixed on the transplanting mechanism 41 and are oppositely arranged at both ends of the transplanting mechanism 41; the two connecting frames 432 are respectively slidably connected to the two groups of second vertical guide rails 433 and are fixed to the top surface of the pressing plate 434, and the connection, guiding and stability are ensured through the two connecting frames 432 and the two groups of second vertical guide rails 433; the double-row U-shaped pressing rod 435 is arranged on the bottom surface of the pressing plate 434 and corresponds to the double-row battery cells 21 one by one, the opening of the U-shaped pressing rod 435 faces the battery cell 21, and rubber-coated rollers 436 are installed at both ends of each U-shaped pressing rod 435, and the rubber-coated rollers 436 press on the pole columns of the battery cells 21. The rubber-coated rollers 436 can be insulated and avoid damage to the pole columns due to pressing; the pressing cylinder 431 drives the pressing plate 434 to move downward, driving the double-row U-shaped pressing rods 435 to press on the pole columns of the double-row battery cells 21, avoiding the vertical upward movement of the battery cells 21 when pressing in the X direction.

[0024] Further, as Figure 4 shown in the figure, in this embodiment, the U-shaped pressing rod 435 is slidably connected to the bottom plate through a pair of guide posts 437. The top end of the guide post 437 is slidably connected to the pressing plate 434, the bottom end of the guide post 437 is connected to the U-shaped pressing rod 435, and a first spring 438 is sleeved on the guide post 437. The two ends of the first spring 438 are respectively abutted against the bottom plate and the U-shaped pressing rod 435. The flexible pressing of the rubber-coated roller 436 against the pole column is realized through the guide post 437 and the spring, reducing the pressing damage.

[0025] Specifically, as Figure 10 shown in the figure, in this embodiment, the end plate pressing module 5 includes: a fixed-end pressing block 51, a movable-end pressing block 52, and a pressing electric cylinder 53; the fixed-end pressing block 51 and the pressing electric cylinder 53 are arranged on the bearing platform 1; the output end of the pressing electric cylinder 53 is connected to the movable-end pressing block 52, and the pressing electric cylinder 53 drives the movable-end pressing block 52 to approach the fixed-end pressing block 51 to press a pair of end plates 24. The fixed-end pressing block 51 serves as the reference for positioning the end plate 24. It is fixedly arranged conveniently and accurately, and can reduce costs. In this embodiment, holes for installing the dust suction pipe 3 are opened in both the fixed-end pressing block 51 and the movable-end pressing block 52, facilitating dust removal during the subsequent welding of the welds.

[0026] Specifically, as Figures 6 to 7As shown in the figure, in this embodiment, the side plate assembly module includes: four side plate positioning mechanisms 61 and a pair of assembly components 62; the pair of assembly components 62 and the four side plate positioning mechanisms 61 are arranged on the bearing platform 1. The pair of assembly components 62 are symmetrically arranged on both sides of the assembly station. One side plate positioning mechanism 61 is provided at each end of each assembly component 62. The side plate positioning mechanism 61 is used for positioning before the assembly of the side plate 23. The assembly component 62 adsorbs and fixes the outer side surface of the positioned side plate 23 and pushes it so that its inner side surface fits against the double-row battery cells 21; the assembly component 62 includes: a servo drive 621, a push plate 622, a pair of first guide rails 623 and a plurality of suction cups 624; in this embodiment, the servo drive 621 uses a servo cylinder. The servo drive 621 is fixed on the bearing platform 1, and the output end of the servo drive 621 is connected to the push plate 622; the pair of first guide rails 623 are fixed on the bearing platform 1 in parallel and are slidably connected to the push plate 622. The first guide rail 623 is perpendicular to the middle plate 22; the plurality of suction cups 624 are distributed on the contact surface between the push plate 622 and the side plate 23 for adsorbing and fixing the side plate 23; the servo drive 621 drives the push plate 622 to contact the side plate 23 and drives the side plate 23 to press against the double-row battery cells 21.

[0027] Further, as Figure 6 shown, in this embodiment, the side plate positioning mechanism 61 includes: a first cylinder 611, a second cylinder 612, a third cylinder 613, a positioning frame 614, a positioning block 615, a movable plate 616, a fixing plate 617, a second guide rail 618 and a third guide rail 619; the first cylinder 611 is arranged on the bearing platform 1, and the output end of the first cylinder 611 is connected to the positioning frame 614; the second guide rail 618, the second cylinder 612 and the fixing plate 617 are fixed on the positioning frame 614, and the second guide rail 618 is parallel to the length direction of the end plate 24; the positioning block 615 is slidably connected to the second guide rail 618 and is connected to the output end of the second cylinder 612; the third cylinder 613 and the third guide rail 619 are fixed on the positioning block 615, and the third guide rail 619 is parallel to the length direction of the side plate 23; the movable plate 616 is slidably connected to the third guide rail 619 and is connected to the output end of the third cylinder 613. The movable plate 616 has an L-shaped bayonet, and the side plate 23 is placed between the fixing plate 617 and the L-shaped bayonet; the first cylinder 611 drives the entire side plate positioning mechanism 61 to move along the length direction of the side plate 23, which can accommodate different side plates 23; the second cylinder 612 drives the movable plate 616 to approach the fixing plate 617 to position the side plate 23 in the width direction; the third cylinder 613 drives the movable plate 616 to move along the length direction of the side plate 23 to position the side plate 23 in the length direction. The precise positioning of the side plate 23 in both the length and width directions is realized through the second cylinder 612 and the third cylinder 613, improving the accuracy of assembly and subsequent welding.

[0028] Specifically, as Figures 8 to 9As shown in the figure, in this embodiment, the weld pressing module includes: four sets of pressing components, which are respectively arranged at the four corners of the assembly station. Each set of pressing components includes an X-direction pressing component 72 and a Y-direction pressing component 71. The Y-direction pressing component 71 presses the side plate 23 and the end plate 24 along the length direction of the end plate 24, and the X-direction pressing component 72 presses the curled edge of the side plate 23 towards the end plate 24. In this embodiment, the Y-direction pressing component 71 includes: a first support frame 711, a Y-direction pressing cylinder 712, a fourth guide rail 713, a connecting block 714, and a telescopic pressing column 715; the first support frame 711 is fixed on the bearing platform 1; the Y-direction pressing cylinder 712 and the fourth guide rail 713 are fixed on the first support frame 711; the connecting block 714 is slidably arranged on the fourth guide rail 713 and is connected to the output end of the Y-direction pressing cylinder 712; the telescopic pressing column 715 is arranged on the connecting block 714, and the telescopic pressing column 715 is made of copper; the Y-direction pressing cylinder 712 drives the telescopic pressing column 715 to move, and flexibly presses the side of the side plate 23 towards the end plate 24. The telescopic pressing column 715 realizes the expansion and contraction of the pressing column through the pressing column slidably arranged on the connecting block 714 and the spring sleeved on the pressing column. By realizing the spring and the copper pressing column, flexible pressing is achieved, and the pressing loss is reduced. In this embodiment, the X-direction pressing component 72 includes: a second support frame 721, an X-direction pressing cylinder 722, a fifth guide rail 723, and a pressing block 724; the second support frame 721 is fixed on the bearing platform 1; the X-direction pressing cylinder 722 and the fifth guide rail 723 are fixed on the second support frame 721; the pressing block 724 is slidably arranged on the fifth guide rail 723 and is connected to the output end of the X-direction pressing cylinder 722. The X-direction pressing cylinder 722 drives the pressing block 724 to move, and presses the curled edge of the side plate 23 towards the end plate 24. A hole for installing the dust suction pipe 3 is opened on the pressing block 724, which is convenient for the dust suction pipe 3 to adsorb the dust generated during the welding of the side plate 23 and the end plate 24. Through the weld pressing module, the weld spacing at the joint of the end plate 24 and the side plate 23 is less than or equal to 0.2 mm, ensuring the welding size.

[0029] Specifically, as Figures 1 to 10 shown, in this embodiment, it further includes: a dust suction pipe 3 and an explosion-proof vacuum cleaner; the dust suction pipe 3 is fixed on the end plate pressing module 5 and the weld pressing module and is opposite to the weld between the end plate 24 and the side plate 23; the explosion-proof vacuum cleaner is connected to the dust suction pipe 3 and is used to adsorb the dust generated during welding. Since the material being welded is aluminum, some flammable and explosive substances will be generated during welding, so an industrial explosion-proof vacuum cleaner is required for dust suction.

[0030] In this embodiment, pressure sensors are installed at the output ends of all the above pressing mechanisms and pressing-down mechanisms, which is convenient for accurately controlling the pressure and avoiding product abnormalities caused by overpressure.

[0031] Working principle: The double-row battery cells 21, the middle plate 22 and a pair of end plates 24 are placed on the bearing platform 1 by a gripper (or other equipment); a pair of side plates 23 are placed on the side plate positioning mechanism 61 for precise positioning.

[0032] The end plate pressing module 5 pre-presses the double-row battery cells 21 through the end plates 24, that is, just in contact without applying pressure. The transplanting mechanism 41 drives the battery cell pressing mechanism 43, the centering mechanism 42 and the end plate pressing mechanism 44 to move above the assembly station. The centering mechanism 42 descends to center the double-row battery cells 21 and a pair of end plates 24 to achieve Y-direction positioning. The battery cell pressing mechanism 43 presses down to achieve Z-direction positioning of the module: the end plate 24 pressing mechanism presses down to achieve Z-direction positioning of the end plate 24.

[0033] The pressing electric cylinder 53 drives the movable end pressing block 52 to press the size of the module in the X direction, and the pressure is monitored in real time during the process; a pair of assembly components 62 adsorb and position a pair of side plates 23 after positioning, and combine them with the double-row battery cells 21 to make the glue of a pair of side plates 23 and the double-row battery cells 21 evenly distributed, and the pressure is monitored in real time during the process.

[0034] Four Y-direction pressing components 71 press the corners of the side plates 23 from the Y direction towards the end plates 24, and four X-direction pressing components 72 press the flanges of the side plates 23 from the X direction towards the end plates 24 to ensure the welding size; during the welding process, the dust suction pipeline 3 and the explosion-proof dust collector adsorb the dust generated during the welding process to avoid poor welding caused by smoke shielding.

[0035] Above, with reference to Figures 1 to 10 The double-row battery cell power module welding and assembly equipment according to the embodiments of the present invention is described, which can realize the automatic assembly of the module, with fast assembly speed and high precision; through the pressing and positioning mechanisms in multiple directions, the welding size is ensured; and a dust suction device is equipped to ensure the quality of laser welding.

[0036] It should be noted that in this specification, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the elements.

[0037] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation to the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A double-row battery cell power module welding assembly equipment, used for positioning and assembling double-row battery cells, a middle plate, a pair of end plates and a pair of side plates, comprising a bearing platform, characterized in that: It also includes a Z-direction clamping module, an end plate clamping module, a side plate assembly module and a weld clamping module arranged on the bearing platform; The double-row battery cells are placed side by side on the assembly station of the carrying platform, the middle plate is placed between the double-row battery cells, the pair of end plates are respectively placed at both ends of the double-row battery cells, and the pair of side plates are coated with glue on the sides connected to the battery cells and are respectively placed on both sides of the double-row battery cells; The Z-direction pressing module is arranged above the assembly station, aligns the double-row battery cells and the end plates, and presses the double-row battery cells and the pair of end plates in a vertical direction; The end plate pressing module is arranged at both ends of the assembly station, and drives the pair of end plates to be pressed against both ends of the double-row battery cells respectively; The side panel assembly module is arranged on both sides of the assembly station, driving the pair of side panels to be pressed toward the two sides of the double-row battery cells respectively; The weld pressing modules are arranged at the four corners of the assembly station to drive the connected side plates and end plates to fit tightly together.

2. The double-row battery cell power module welding assembly equipment as claimed in claim 1, characterized in that: The Z-direction pressing module comprises: a transplanting mechanism, a centering mechanism, a battery cell pressing mechanism and an end plate pressing mechanism; The transplanting mechanism is fixed on the carrying platform, the output end of the transplanting mechanism is fixed with the centering mechanism, the battery cell pressing mechanism and the end plate pressing mechanism, and the transplanting mechanism drives the centering mechanism, the battery cell pressing mechanism and the end plate pressing mechanism to approach or move away from the assembly station along the length direction of the middle plate; The centering mechanism is used for centering the double-row battery cells and the pair of end plates; The battery cell pressing mechanism presses down and tightens the poles of the double-row battery cells; The end plate pressing mechanism presses down and tightens the pair of end plates.

3. The double-row battery cell power module welding assembly equipment as claimed in claim 2, characterized in that: The centering mechanism comprises: a pair of centering components, the pair of centering components are symmetrically arranged on the transplanting mechanism and respectively arranged on both sides of the assembly station; The centering assembly comprises: a mounting frame, a centering frame, a lifting cylinder, a first vertical guide rail, a horizontal guide rail, a centering cylinder and a centering member; The mounting frame is fixed to the output end of the transplanting mechanism; The lifting cylinder is installed on the mounting frame, and the output end of the lifting cylinder is connected to the centering frame; The centering frame is provided with the first vertical guide rail, and the centering frame is slidably connected to the mounting frame through the first vertical guide rail; The centering cylinder is arranged on the centering frame; The centering piece is provided with the horizontal guide rail, the centering piece is slidably connected to the centering frame through the horizontal guide rail, the horizontal guide rail is perpendicular to the middle plate, and the centering piece is connected to the output end of the centering cylinder; The lifting cylinder drives the centering piece to move in a vertical direction, and the centering cylinder drives the centering piece to approach the side of the double-row battery cells.

4. The double-row battery cell power module welding assembly equipment as claimed in claim 2, characterized in that: The battery cell pressing mechanism comprises: a pressing cylinder, two connecting frames, two sets of second vertical guide rails, a pressing plate, a double row of U-shaped pressing rods and a rubber-coated roller; The downward pressure cylinder is fixed on the transplanting mechanism, and the output end of the downward pressure cylinder is connected to the top surface of the pressing plate; The two sets of second vertical guide rails are fixed on the transplanting mechanism and are arranged oppositely at two ends of the transplanting mechanism; The two connecting frames are respectively slidably connected to the two sets of second vertical guide rails and fixed to the top surface of the pressing plate; The double-row U-shaped pressure rods are arranged on the bottom surface of the pressure plate and correspond to the double-row battery cells one by one. The openings of the U-shaped pressure rods face the battery cells. The rubber-coated rollers are installed at both ends of each of the U-shaped pressure rods, and the rubber-coated rollers cover the poles of the battery cells. The downward pressure cylinder drives the pressure plate to move downward, thereby driving the double-row U-shaped pressure rods to press the poles of the double-row battery cells.

5. The double-row battery cell power module welding assembly equipment as claimed in claim 4, characterized in that: The U-shaped pressure rod is slidably connected to the base plate through a pair of guide columns, the top end of the guide column is slidably connected to the pressure plate, the bottom end of the guide column is connected to the U-shaped pressure rod, and a first spring is sleeved on the guide column, and the two ends of the first spring are respectively abutted against the base plate and the U-shaped pressure rod.

6. The double-row battery cell power module welding assembly equipment as claimed in claim 1, characterized in that: The end plate clamping module comprises: a fixed end clamping block, a movable end clamping block and a clamping electric cylinder; The fixed end pressing block and the pressing electric cylinder are arranged on the bearing platform; The output end of the clamping electric cylinder is connected to the movable end clamping block, and the clamping electric cylinder drives the movable end clamping block to approach the fixed end clamping block to clamp the pair of end plates.

7. The double-row battery cell power module welding assembly equipment as claimed in claim 1, characterized in that: The side panel assembly module comprises: four side panel positioning mechanisms and a pair of assembly components; The pair of assembly components and the four side panel positioning mechanisms are arranged on the carrying platform, the pair of assembly components are symmetrically arranged on both sides of the assembly station, and each of the two ends of the assembly component is provided with a side panel positioning mechanism, and the side panel positioning mechanism is used for positioning the side panels before assembly; The assembly component comprises: a servo drive, a push plate, a pair of first guide rails and a plurality of suction cups; The servo drive is fixed on the bearing platform, and the output end of the servo drive is connected to the push plate; The pair of first guide rails are fixed to the bearing platform in parallel with each other and are slidably connected to the push plate, and the first guide rails are perpendicular to the middle plate; The plurality of suction cups are distributed on the interface between the push plate and the side plate, and are used to absorb and fix the side plate; The servo drive component drives the push plate to connect with the side plate, and drives the side plate to press toward the double-row battery cells.

8. The double-row battery cell power module welding assembly equipment as claimed in claim 7, characterized in that: The side plate positioning mechanism comprises: a first cylinder, a second cylinder, a third cylinder, a positioning frame, a positioning block, a movable plate, a fixed plate, a second guide rail and a third guide rail; The first cylinder is arranged on the bearing platform, and the output end of the first cylinder is connected to the positioning frame; The second guide rail, the second cylinder and the fixing plate are fixed on the positioning frame, and the second guide rail is parallel to the length direction of the end plate; The positioning block is slidably connected to the second guide rail and is connected to the output end of the second cylinder; The third cylinder and the third guide rail are fixed on the positioning block, and the third guide rail is parallel to the length direction of the side plate; The movable plate is slidably connected to the third guide rail and is connected to the output end of the third cylinder. The movable plate has an L-shaped bayonet, and the side plate is placed between the fixed plate and the L-shaped bayonet. The first cylinder drives the positioning frame to move along the length direction of the side plate; The second cylinder drives the movable plate to approach the fixed plate to position the side plate in the width direction; The third cylinder drives the movable plate to move along the length direction of the side plate to position the side plate in the length direction.

9. The double-row battery cell power module welding assembly equipment as claimed in claim 1, characterized in that: The weld clamping module comprises: four groups of clamping assemblies, which are respectively arranged at the four corners of the assembly station, each group of the clamping assemblies comprises an X-direction clamping assembly and a Y-direction clamping assembly, the Y-direction clamping assembly clamps the side plate and the end plate along the length direction of the end plate, and the X-direction clamping assembly presses the curled edge of the side plate toward the end plate; The Y-direction pressing assembly comprises: a first support frame, a Y-direction pressing cylinder, a fourth guide rail, a connecting block, and a telescopic pressing column; The first support frame is fixed to the bearing platform; The Y-direction pressing cylinder and the fourth guide rail are fixed on the first supporting frame; The connecting block is slidably disposed on the fourth guide rail and is connected to the output end of the Y-direction pressing cylinder; The telescopic pressure column is arranged on the connecting block, and the telescopic pressure column is made of copper; The Y-direction pressing cylinder drives the telescopic pressing column to move, so as to flexibly press the side of the side plate toward the end plate; The X-direction pressing assembly comprises: a second support frame, an X-direction pressing cylinder, a fifth guide rail and a pressing block; The second support frame is fixed to the bearing platform; The X-axis pressing cylinder and the fifth guide rail are fixed on the second support frame; The pressing block is slidably arranged on the fifth guide rail and is connected to the output end of the X-direction pressing cylinder. The X-direction pressing cylinder drives the pressing block to move and presses the curling edge of the side plate toward the end plate.

10. The double-row battery cell power module welding assembly equipment as claimed in claim 1, characterized in that: Also includes: dust collection duct and explosion-proof vacuum cleaner; The dust suction duct is fixed to the end plate pressing module and the weld pressing module, and is opposite to the weld between the end plate and the side plate; The explosion-proof dust collector is connected to the dust suction pipe and is used for absorbing smoke generated during welding.

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