A battery piece film pasting combined device

Abstract

The application discloses a kind of battery piece film pasting combination device, it is related to photovoltaic cell production equipment technical field, including film strip slitting mechanism, first handling mechanism, second handling mechanism, transition bearing mechanism and conveying mechanism;First handling mechanism is used to pick up the film strip that is cut from film strip slitting mechanism and is handled to the adsorption site on transition bearing mechanism, second handling mechanism is used to pick up film strip from adsorption site and is placed on the edge of battery piece on conveying mechanism, conveying mechanism is equipped with arrangement regular mechanism on one side of loading end, and is equipped with film pasting mechanism on one side of discharging end, the interval of battery piece on conveying mechanism is adjusted in advance through arrangement regular mechanism, after film strip is placed on edge, film strip pasting is completed through film pasting mechanism, the application can simultaneously carry out film strip pasting to multiple battery piece edges and reduce the occurrence of battery piece breakage, improve the efficiency and yield of film strip pasting.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cell production equipment technology, specifically to a cell film bonding assembly device. Background Technology

[0002] In photovoltaic cell production, the gaps between adjacent cells are often reduced or their edges are stacked to maximize the light-receiving area. However, the edges of adjacent cells are prone to microcracks or breakage due to localized stress. To address this, flexible film strips can be inserted between the edges of adjacent cells to buffer the stress. Current technology involves inserting the film strip after the cells are welded together, resulting in a low success rate and a high risk of edge breakage, reducing production yield. Furthermore, this method of film placement only allows for sequential edge-to-edge arrangement, significantly reducing photovoltaic cell production efficiency. Therefore, an improved cell film-attaching assembly device is needed. Summary of the Invention

[0003] To address the issues of easy scrapping and low efficiency of existing solar cell film-applying assembly devices mentioned in the background section, a solar cell film-applying assembly device is proposed, which performs a film-applying step before connecting solar cells in series, thereby improving the production yield and efficiency of photovoltaic cells.

[0004] This invention discloses a battery cell film-applying assembly device, comprising a film strip cutting mechanism, a first conveying mechanism, a second conveying mechanism, a transition bearing mechanism, and a conveying mechanism. The film strip cutting mechanism has the ability to cut film strips into film strips. The transition bearing mechanism has several adsorption positions arranged in parallel, each having the ability to selectively adsorb film strips. The conveying mechanism is used to convey battery cells to be coated with film strips and is configured to perform unidirectional translational conveying motion with a regular intermittent rhythm. The conveying mechanism has an arrangement straightening mechanism on the loading end side for adjusting the spacing between battery cells and an adsorption mechanism on the unloading end side for pasting film strips. The film-applying mechanism on the solar cell; the first transport mechanism and the second transport mechanism sequentially and stepwise transfer the slit film strips. Each of them has several actuators arranged side by side with selective adsorption capabilities for the film strips, and all actuators have the ability to independently perform controllable translational movements along the arrangement direction. The number of actuators in the second transport mechanism is several times the number of actuators in the first transport mechanism. The first transport mechanism is used to pick up the film strips from the film strip slitting mechanism and transport them to the adsorption position. The second transport mechanism is used to pick up the film strips from the adsorption position and place them on the edge of the solar cell after it has passed through the arrangement and alignment mechanism.

[0005] As a further improvement of the present invention, the membrane strip cutting mechanism cuts the membrane strip into 2nm membrane strips, wherein n≥1 and m≥2; the first transport mechanism is provided with 2n independent first adsorption parts, the transition bearing mechanism is provided with at least two adsorption positions spaced apart, each first adsorption part is provided with m first adsorption ridges, and the second transport mechanism is provided with 2nm independent adsorption parts.

[0006] As a further improvement of the present invention, the 2n first adsorption parts are closely attached to each other when picking up the membrane strip, and each first adsorption ridge has a membrane strip adsorbed individually. During the transport and transfer of the membrane strip, the 2n first adsorption parts are synchronously translated and divided into two groups, each group containing n closely attached first adsorption parts, and the spacing between the groups corresponds to the arrangement spacing of the adsorption positions on the transition support mechanism; the 2nm arranged adsorption parts are divided into two groups when picking up the membrane strip, each corresponding to a different pick-up adsorption position, each group containing nm closely attached arranged adsorption parts, each arranged adsorption part adsorbing a membrane strip individually. During the transport and transfer of the membrane strip, the closely attached arranged adsorption parts are synchronously translated and separated, and the moving membrane strip is arranged in an array structure corresponding to the edge of the battery cell.

[0007] As a further improvement of the present invention, the first transport mechanism and the second transport mechanism are provided with parallel positioning and locking mechanisms on the translation path of their respective execution parts. The positioning and locking mechanisms are provided with a plurality of locking positions evenly spaced apart, and any execution part has the ability to form a detachable and fixed connection with any locking position.

[0008] As a further improvement of the present invention, the arrangement and alignment mechanism includes an alignment frame and an alignment drive mechanism; the two alignment frames are symmetrically arranged on both sides of the conveying mechanism. When the conveying mechanism is in a stopped state, the two alignment frames are driven by the alignment drive mechanism and have the ability to move closer to or away from the conveying mechanism, so as to correct the position of the battery cells on the conveying mechanism when they move closer to each other.

[0009] As a further improvement of the present invention, the film-applying mechanism includes a film-pressing plate, a film-applying platform, and a film-applying mounting frame; the film-pressing plate is floatingly disposed above the conveying mechanism and has the ability to lower and press the edge film strip of the battery cell; the film-applying platform is fixedly disposed below the conveying mechanism and has the ability to adsorb and heat the pressed film strip and battery cell.

[0010] As a further improvement of the present invention, the transition bearing mechanism includes a bearing platform and a movable platform; the bearing platform is provided with a number of adsorption positions at intervals, and there are different intervals between adjacent adsorption positions. Each adsorption position is provided with a number of adsorption holes arranged in an array along the direction of the membrane strip cutting; the movable platform has the ability to move back and forth on the upper side of the bearing platform.

[0011] As a further improvement of the present invention, the film strip slitting mechanism includes a winding section, a slitting table, a traction section, and a guide section; the winding section is provided with a plurality of conveying rollers for winding and conveying the film strip, the slitting table is located on the horizontal output side of the lowest conveying roller of the winding section, and a film strip cutting section is provided on the side near the winding section; the traction section is arranged parallel to the upper side of the slitting table and has the ability to move in a translational manner along the film strip conveying direction, and a film clamping section is provided on the traction section for pulling the film strip; the guide section is located on the horizontal side of the film strip cutting section, and an opening and closing section is movably provided at the upper end of the guide section for clamping and fixing the film strip.

[0012] As a further improvement of the present invention, it also includes a buffer platform; the buffer platform has the ability to reciprocate and lift in the vertical direction, and the extreme position after lifting is higher than the conveying mechanism; the buffer platform is floatingly disposed on both sides of the conveying mechanism and located below the movement path of the second transport mechanism, and the positions of the upper actuators of the second transport mechanism after unloading the film strip are all within the horizontal extension range of the buffer platform.

[0013] As a further improvement of the present invention, it also includes several visual inspection mechanisms; a visual inspection mechanism is provided above the conveying mechanism on the feeding end side of the arrangement and straightening mechanism for detecting the arrangement spacing of the battery cells; a visual inspection mechanism is provided above the conveying mechanism on the unloading end side of the film-applying mechanism for detecting the film strip application quality.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention applies a film strip before welding the battery cell to avoid battery cell breakage due to stress concentration during welding, thereby improving production yield. Furthermore, it allows for simultaneous film application to multiple unwelded battery cells, improving film application efficiency.

[0015] 2. The cut film strips are successively transferred by the two transport mechanisms of the present invention. During the transport process, they are separated and moved away twice by the independent translational movement of the actuator on the transport mechanism. The state of multiple slender film strips being placed side by side and attached to each other is changed to a state of being independent of each other. The process of transfer and transport also completes the division step of the slender film strips. Multiple film strips can be provided to the subsequent mechanism at one time, ensuring the efficiency of film strip transport.

[0016] 3. Either of the two conveying mechanisms of the present invention can control the distance of translational movement. While the film strip is being translated and divided by the conveying unit, it is also pre-arranged into an array with a specific spacing with the conveying unit so as to directly correspond to the edge position of the battery cell on the subsequent bonding station, eliminating the need for additional layout process and completing the bonding process directly while the film strip is being conveyed and unloaded.

[0017] 4. The present invention can adjust the translation distance of the actuator on each conveying mechanism according to the specific size requirements of different battery cells and the width of the membrane strip cutting, so as to obtain the membrane strip array arrangement spacing that adapts to different size requirements, and has wide adaptability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the film strip cutting mechanism of the present invention; Figure 3 This is a schematic diagram of the slitting table, traction section, and guide section of the film strip slitting mechanism; Figure 4 This is a schematic diagram showing the relative positional relationship between the first and second transport mechanisms of the present invention with respect to the film strip cutting mechanism; Figure 5 This is an enlarged schematic diagram of the actuator structure of the first and second transport mechanisms. Figure 6 for Figure 5 A schematic diagram of the first adsorption section on the first transport mechanism from a center-A perspective; Figure 7 This is a schematic diagram of the arrangement of adsorption units on the second conveying mechanism; Figure 8 for Figure 5 A magnified schematic diagram of the structure with adsorption units arranged from a B-axis perspective; Figure 9 This is a schematic diagram of the transition load-bearing mechanism; Figure 10 This is a schematic diagram illustrating the principle of the first adsorption unit moving and separating the slit membrane strips during the transport process. Figure 11 This is a schematic diagram showing the membrane strip being transported to the support platform via the first adsorption section, and a schematic diagram showing the relative positions of the adsorption sections and the membrane strip. Figure 12 A schematic diagram illustrating the principle of the membrane strips after being separated and cut during the transportation process, in order to arrange the adsorption section. Figure 13 This is a schematic diagram showing the relative positional relationship of the conveying mechanism with respect to the first handling mechanism, the second handling mechanism, and the transition bearing mechanism. Figure 14 A schematic diagram of the arrangement mechanism on the feeding side of the conveying mechanism; Figure 15 A schematic diagram of the structure for arranging regular mechanisms; Figure 16 This is a schematic diagram of the film-applying mechanism on the unloading side of the conveying mechanism; Figure 17This is a schematic diagram showing the solar cell positioned between the pressure plate and the auxiliary pressure plate. Figure 18 This is a schematic diagram showing the relative positional relationship between the membrane-coating platform, the conveyor belt of the conveying mechanism above, and the battery cells being transported. Figure 19 This is a schematic diagram showing the structure of the buffer platforms on both sides of the conveying mechanism and the relative position of the actuator of the second transport mechanism with respect to the buffer platforms when the membrane strip is unloaded; Figure 20 This is a schematic diagram showing the relative positional relationship between the buffer platform and the conveyor belt of the conveyor mechanism and the moving battery cells. 1. Film strip slitting mechanism; 11. Winding section; 111. Conveyor roller; 12. Slitting table; 121. Film strip cutting section; 13. Traction section; 131. Film clamping section; 14. Guide section; 141. Opening and closing section; 2. First transport mechanism; 21. First adsorption section; 211. First adsorption ridge; 2111. Suction hole; 212. Pressing ridge; 3. Second transport mechanism; 31. Adsorption section arrangement; 311. Adsorption head arrangement; 3111. Buffer pad; 4. Transition bearing mechanism; 40. Adsorption position; 41. Bearing table; 411. Adsorption hole; 4 2. Moving table; 5. Conveying mechanism; 51. Arrangement and alignment mechanism; 511. Alignment frame; 5111. First alignment component; 5112. Second alignment component; 512. Alignment drive mechanism; 5121. Alignment drive platform; 52. Film application mechanism; 521. Film pressing plate; 5211. Auxiliary pressing plate; 522. Film application table; 523. Film application mounting frame; 5231. Film application moving frame; 6. Buffer platform; 60. Support bracket; 61. Buffer seat; 7. Positioning and locking mechanism; 71. Locking position; 72. Positioning connecting plate; 8. Visual inspection mechanism. Detailed Implementation

[0019] Please see the appendix Figure 1 - Appendix Figure 20 , A battery cell film application assembly includes a film strip cutting mechanism 1, a first transport mechanism 2, a second transport mechanism 3, a transition bearing mechanism 4, a conveying mechanism 5, a buffer platform 6, a positioning and locking mechanism 7, and a visual inspection mechanism.

[0020] like Figure 1 As shown, this battery cell lamination assembly device has two symmetrically arranged production line parts. Taking one side of the assembly structure as an example, as follows... Figure 2 and Figure 3 As shown, the film strip slitting mechanism 1 includes a winding section 11, a slitting table 12, a traction section 13, and a guide section 14.

[0021] A continuous membrane roll is mounted on the upper end of the structural frame of the winding section 11. Five conveyor rollers 111 are mounted on the structural frame below the membrane roll, arranged at different heights from top to bottom in a sequence of one, two, one, one. The membrane strip extending from the membrane roll sequentially winds through all the conveyor rollers 111, and each conveyor roller 111 can rotate around its own central axis. The conveyor roller 111 on which the membrane strip winds for the third time is indirectly connected to the structural frame via a vertically mounted guide rail slider mechanism. When this conveyor roller 111 moves downwards, the membrane strip wound on it is tensioned.

[0022] On the horizontal side of the film strip wound from the lowest conveyor roller 111, there is a horizontal slitting table 12. The slitting table 12 has four evenly spaced through-cut grooves parallel to each other on the side near the winding section 11. Each groove contains a blade, which is fixed to the upper side of the film strip cutting section 121. The film strip cutting section 121 is driven by a moving frame below the slitting table 12 and can perform reciprocating cutting motion along the grooves. A motor-driven eccentric vibration device is provided at the connection between the film strip cutting section 121 and the blade, which can simultaneously drive the blade to vibrate up and down while moving it horizontally, aiding in cutting. A guide rail slider mechanism is horizontally arranged at the bottom of the slitting table 22, allowing the slitting table 12 to move horizontally along the guide rail towards or away from the winding section 11.

[0023] The traction unit 13 is located on the horizontal side of the slitting table, in the direction of the extension of the knife groove. A linear motor is horizontally arranged on the upper side of the traction unit 13. The movement direction of the linear motor is perpendicular to the extension direction of the knife groove. The moving end of the linear motor is fixedly connected to the film clamping unit 131. The film clamping unit 131 extends horizontally to the upper surface of the slitting table 13 and is parallel to the extension direction of the knife groove. The film clamping unit 131 has a gripper on the side near the winding unit 11. The gripper is driven by a cylinder and can open and close freely to clamp the film strip. After the gripper clamps the film strip, the film clamping unit 131 can be driven by the linear motor to move away from the winding unit 11 to pull the film strip onto the slitting table 12.

[0024] The guide section 14 is located on the horizontal side of the cutting table 12 where the blade groove is opened. Above the guide section 14 is an opening and closing section 141, which is composed of two horizontal plates stacked one on top of the other. A telescopic cylinder is provided at both ends of the lower horizontal plate. The telescopic ends of the two telescopic cylinders pass through the lower plate and extend to connect to both ends of the upper plate. Driven by the two telescopic cylinders, the upper plate can reciprocate up and down in the vertical direction to press against or separate from the lower plate. The film strip is inserted between the two plates. When the upper plate is lowered, it can press against the lower plate to fix the film strip.

[0025] like Figure 4As shown, a first conveying mechanism 2 and a second conveying machine 3 are provided above the film strip cutting mechanism 1, and a transition bearing mechanism 4 is fixedly provided on the right side of the film strip cutting mechanism 1.

[0026] Specifically, a beam frame structure higher than the slitting table 12 is fixedly installed on the side away from the winding section 11 on the slitting table 12. A linear motor is horizontally installed at the upper end of the beam frame structure along the extension direction of the blade groove on the slitting table 12. Two independent horizontal moving ends are coaxially installed on the linear motor. A linear motor with a lifting moving end is vertically installed on each of the two horizontal moving ends. A first conveying mechanism 2 is fixed on the lifting moving end closer to the slitting table 12, and a second conveying mechanism 3 is fixed on the lifting moving end away from the slitting table 12.

[0027] like Figure 5 As shown, the first conveying mechanism 2 includes a beam frame structure fixedly connected to the lifting and moving end. A pair of guide rail slider mechanisms are horizontally arranged at the bottom of the beam frame structure. Each guide rail slider mechanism has two sliders on its guide rail, and the slider movement direction of the guide rail slider mechanism is spatially perpendicular to the extension direction of the knife groove. The second conveying mechanism 12 also includes a beam frame structure fixedly connected to the lifting and moving end. A pair of guide rail slider mechanisms are arranged at the bottom of the beam frame structure, and each guide rail slider mechanism has four sliders on its guide rail.

[0028] Furthermore, such as Figure 6 As shown, the first conveying mechanism 2 includes symmetrically arranged first adsorption parts 21a and 21b. The first adsorption part 21a is generally elongated, with its long axis extending parallel to the extension direction of the cutting groove on the cutting table 12. The sliders on the left side of the two guide rail slider mechanisms are fixedly connected to both ends of the first adsorption part 21a, and the sliders on the right side are fixedly connected to the first adsorption part 21b in the same manner. The beam frame structure that fixes the guide rail slider mechanism has a positioning locking mechanism 7 at its side end parallel to the extension direction of the guide rail. Horizontal screw holes are evenly spaced on the side wall of the locking mechanism 7, and each horizontal screw hole can serve as a locking position 71. Figure 6The first adsorption part 21b on the right side is threadedly connected to a positioning connecting plate 72 at its end. The positioning connecting plate 72 extends upward and has a positioning groove at the same height as the horizontal screw hole of the locking position 71. By inserting a screw threaded into the positioning groove to connect to the locking position 71, the sliding movement of the first adsorption part 21b along the guide rail can be restricted. The beam frame structure that fixes the guide rail slider mechanism has a telescopic cylinder horizontally arranged on the upper side. The telescopic end of the telescopic cylinder is fixedly connected to the first adsorption part 21b that is limited and fixed. The cylinder body of the telescopic cylinder is fixedly connected to the first adsorption part 21a. When the telescopic cylinder performs reciprocating telescopic movement, the telescopic end of the telescopic cylinder remains fixed with the first adsorption part 21b. The first adsorption part 21a, which is fixedly connected to the cylinder body, can perform follow-up translational movement about the cylinder body. When the telescopic end of the telescopic cylinder moves back to its limit distance, the side walls of the first adsorption part 21a and the first adsorption part 21b are in a parallel and close state.

[0029] like Figure 6 As shown, the bottom of the first adsorption part 21 is provided with three prismatic structures arranged along the extension direction of the groove, including two first adsorption ridges 211 and one pressing ridge 212. One of the first adsorption ridges 211 is offset at the edge of the first adsorption part 21, and its long axis sidewall is coplanar with the long axis sidewall of the first adsorption part 21 on one side of the offset direction. The remaining first adsorption ridge 211 and pressing ridge 212 are arranged at even intervals on the other side. The three have the same vertical extension length and are on the same horizontal plane. The first adsorption ridge 211 of the first adsorption part 21a, which is coplanar with its own sidewall, is arranged towards the side closer to the first adsorption part 21b. Similarly, the first adsorption ridge 211 of the first adsorption part 21b, which is coplanar with its own sidewall, is arranged towards the side closer to the first adsorption part 21a. When the sidewalls of the two first adsorption parts 21 are translated and attached, the sidewalls of the first adsorption ridges 211, which are coplanar with the sidewalls of the two, are also in a attached state. The first adsorption part 21 is hollow inside and has through holes at both ends of its long axis for connecting to the pipeline of the negative pressure vacuum equipment. The bottom surfaces of the two first adsorption ridges 211 are each provided with air suction holes 2111 that penetrate and connect to the internal cavity of the first adsorption part 21. The air suction holes 2111 on each first adsorption ridge 211 are evenly spaced and staggered along their own long axis. When the negative pressure vacuum equipment is started, air can be continuously drawn out through the air suction holes 2111 on the first adsorption ridges 211 to form a negative pressure environment below the first adsorption ridges 211 for adsorbing the membrane strip.

[0030] like Figure 7As shown, the second conveying mechanism 3 includes four arranged adsorption parts 31. Each arranged adsorption part 31 has a long, strip-like structure. The horizontal thickness of each arranged adsorption part 31 is less than the horizontal thickness of the first adsorption part 21. The long axis of each arranged adsorption part 31 extends parallel to the extension direction of the cutting groove on the cutting table 12. Each end of each arranged adsorption part 31 is fixedly connected to a slider on a different guide rail slider mechanism at the bottom of the beam frame structure. The four arranged adsorption parts 31 are arranged parallel to each other below two guide rail slider mechanisms. Similarly, the beam frame structure with the fixed guide rail slider mechanism is provided with a positioning locking mechanism 7 at its side end parallel to the extension direction of the guide rail. Locking positions 71 are evenly spaced on the side wall of the locking mechanism 7. Figure 7 The ends of the adsorption units 31b and 31c, which are located in the middle, are both threadedly connected to positioning connecting plates 72. By inserting screws with threaded locking positions 71 into the positioning grooves, the sliding movement of the adsorption units 31b and 31c along the guide rail can be restricted. The beam frame structure that fixes the guide rail slider mechanism has a pair of telescopic cylinders horizontally arranged on the upper side. The two telescopic cylinders are arranged with opposite output directions at their output ends. The cylinder body of one telescopic cylinder is fixedly connected to the adsorption unit 31b, and its telescopic end is fixedly connected to the adsorption unit 31a located on the outer side. Similarly, the cylinder body of the other telescopic cylinder is fixedly connected to the adsorption unit 31c, and its telescopic end is fixedly connected to the adsorption unit 31d located on the outer side. When the telescopic cylinder performs reciprocating telescopic motion, the cylinder body of the telescopic cylinder remains fixed relative to the adsorption arrangement part 31b or the adsorption arrangement part 31c, while the adsorption arrangement part 31a or the adsorption arrangement part 31d can perform follow-up translational motion relative to the output end of their respective connected telescopic cylinders. When the telescopic cylinder's telescopic end moves back to its limit position, the side wall of the adsorption arrangement part 31a and the side wall of the adsorption arrangement part 31b, or the side wall of the adsorption arrangement part 31c and the side wall of the adsorption arrangement part 31d, can be in a parallel and close-fitting state.

[0031] like Figure 8As shown, the bottom of the adsorption unit 31 is provided with an adsorption head 311 extending downwards. The adsorption head 311 is a cylindrical structure extending vertically downwards, and several adsorption heads 311 are evenly spaced along the long axis of the adsorption unit 31. When any two adsorption units 31 are in a state of sidewall contact under the contraction movement of the telescopic cylinder, the horizontal distance between their respective adsorption heads 311 is not greater than the horizontal distance between the two first adsorption ridges 211 on the first adsorption unit 21. The adsorption unit 31 is hollow inside and has through holes at both ends of its long axis for connecting to the pipeline of the negative pressure vacuum equipment. The axial center of each adsorption head 311 is connected to the internal cavity of the adsorption unit 31. When the negative pressure vacuum equipment is started, air can be continuously drawn through the axial hole on the adsorption head 311 to form a negative pressure environment below the adsorption head 311 for adsorbing the membrane strip. Furthermore, each of the arranged adsorption heads 311 has a silicone buffer pad 3111 at its lower end. The buffer pad 3111 has a trumpet-shaped structure with a gradually increasing diameter from top to bottom. The upper end of the buffer pad 3111 with a smaller diameter is fixedly connected to the lower end of the arranged adsorption head 3111. The center of the buffer pad 3111 is connected to the axial hole of the arranged adsorption head 3111, so that air is drawn in from below the end of the buffer pad 3111 with a larger diameter to generate negative pressure for adsorbing the membrane strip. When the membrane strip is unloaded to the edge of the battery cell, the buffer pad 3111 can buffer the pressure force generated by contact with the battery cell and prevent the battery cell from cracking.

[0032] like Figure 9 As shown, the transition support mechanism 4 is located on the horizontal right side of the slitting table 12, below the movement path of the second conveying mechanism 3. The transition support mechanism 4 includes a support table 41 and a movable table 42. The support table 41 is horizontal to the slitting table 12. The support table 41 has suction holes 411 evenly spaced along the extension direction of the blade groove. The suction holes 411 are arranged in an array to form eight rows of suction hole arrays, and each two adjacent rows of suction hole arrays together form a... Figure 9In the enlarged view, the strip-shaped adsorption positions 40 within the dashed box area are smaller than the horizontal distance between the two rows of adsorption holes 411 arrays forming the adsorption positions 40. The eight rows of adsorption holes 411 arrays form four adsorption positions 40, and the distance between the four adsorption positions 40 gradually increases from the side closer to the transport mechanism 1 to the side farther away from the transport mechanism 1, corresponding to the spacing distance of the edge coating of different sized battery cells. A hollow pipe structure is provided below each adsorption position 40 on the support platform 41. The pipe structure connects to all the adsorption holes 411 on the adsorption position 40. Each pipe structure corresponding to the adsorption position 40 is connected to an independent negative pressure vacuum device, which can create a negative pressure environment above any single adsorption position 40 for adsorbing a single slit film strip. A support frame is fixedly connected to the lower surface of the support platform 41. A guide rail slider mechanism is provided at the bottom of the support frame, and the slider movement direction of the guide rail slider mechanism is perpendicular to the extension direction of the cutting groove.

[0033] The movable platform 42 is horizontally positioned on the side of the support platform 41 closest to the conveying mechanism 1. The planar dimensions of the movable platform 42 are larger than those of the support platform 41, and the horizontal plane of the movable platform 42 is higher than the plane of the upper surface of the support platform 41. A horizontal pushing platform's translation drive is connected to the bottom of the movable platform 42 on the side furthest from the support platform 41. This translation drive is driven by a cylinder and can perform reciprocating translational movements in the same direction as the support frame below the support platform 41. When the translation drive of the movable platform 42 moves to its limit position towards the side closest to the support platform 41, the movable platform 42 moves accordingly to above the support platform 41, where it can be used to arrange and place membrane strips.

[0034] Membrane strip transport principle: Transfer process of the first handling mechanism 2: In its initial state, the first adsorption section 21a is driven by a telescopic cylinder and is attached side-by-side with the sidewall of the first adsorption section 21b. The complete membrane strip is cut into four independent membrane strips at the slitting table 12. At this time, the membrane strips are still arranged as a whole on the slitting table, that is, the cut edges of the membrane strips remain side-by-side and attached. Figure 10As shown, the two first adsorption units 21 generate negative pressure suction below the four first adsorption ridges 211 through a negative pressure vacuum device, adsorbing the four membrane strips arranged in a whole. Each first adsorption ridge 211 adsorbs a separate membrane strip, and the arrangement of the four membrane strips remains unchanged. The vertical planes of the two adjacent first adsorption ridges 211 pass through the slit in the middle of the four membrane strips. The first transport mechanism 2 transfers and transports the two first adsorption units to the top of the support platform 41 through the lifting and translation movement of the linear motor. During this transfer and transport process, the first adsorption unit 21a is driven by the telescopic cylinder to move away from the first adsorption unit 21b. The four membrane strips are divided into two groups from the initial side-by-side arrangement. The bottom of each of the first adsorption units 21a and 21b adsorbs two cut membrane strips, and the two membrane strips are arranged side-by-side with their edges touching. The distance between the first adsorption section 21a and the first adsorption section 21b is equal to the distance between the two outermost adsorption positions 40 of the support platform 41. The two first adsorption sections 21 descend to the two outermost adsorption positions 40 on the upper surface of the support platform 41, respectively. Then, the first adsorption ridge 211 stops adsorbing the membrane strip, unloads the adsorbed membrane strip, and proceeds as follows: Figure 11 As shown, the vacuum negative pressure device of the two adsorption positions 40 is activated, and the membrane strip is adsorbed by the adsorption holes 411 in the adsorption positions 40.

[0035] The transfer process of the second handling mechanism 3: like Figure 11 As shown, the second adsorption section 31b and the second adsorption section 31c are fixed and limited to the upper beam frame by a connecting plate, and the horizontal distance between them is the same as the distance between the two adsorption positions 40 where the membrane strip is adsorbed. In the initial state, the second adsorption section 31a and the second adsorption section 31d are driven by the telescopic cylinder and are respectively aligned and attached to the second adsorption section 31b and the second adsorption section 31c. Taking the second adsorption section 31a and the second adsorption section 31b as an example, as Figure 12As shown, the negative pressure vacuum device of the adsorption position 40 is stopped, and the negative pressure vacuum device of the second transport mechanism 3 is started, so that a negative pressure suction force is generated below the buffer pad 3111 at the lower end of the adsorption part 311, adsorbing the two membrane strips on the adsorption position 40. The second adsorption part 31a and the second adsorption part 31b independently adsorb one membrane strip through their respective adsorption parts 311. The second transport mechanism 3 transfers the second adsorption part 31a and the second adsorption part 31b to the upper part of the subsequent membrane strip setting station by the lifting and translation movement of the linear motor. During this transfer and transportation process, the second adsorption part 31a is driven by the telescopic cylinder to move away from the first adsorption part 31b, and the two membrane strips are separated from the initial parallel arrangement into independent membrane strips. Similarly, the second adsorption part 31c and the second adsorption part 31d on the other side of the second transport mechanism 3 are also separated into two independent membrane strips. At this time, the four membrane strips formed can be directly unloaded to the edge of the battery cell in the subsequent station for the coating step.

[0036] Depending on the spacing of the cells in subsequent processes, different adsorption positions 40 are selected on the support platform 41, and the limiting and fixing positions of the first adsorption part 21 and the second adsorption part 31 and the pushing distance parameters of the telescopic cylinder are adjusted. This enables the adaptation of cells with different size parameters, and the arrangement of film strips during the handling process. The film strips can be directly inserted into the corresponding cell covering positions.

[0037] like Figure 13 As shown, the conveying mechanism 5 is fixedly installed on the right side of the transition bearing mechanism 4. The conveying mechanism 5 includes a reciprocating conveyor belt with three rows of perforated strips at even intervals. The conveyor belt is driven by motors at both ends of the conveying mechanism 5, and the upper surface of the conveyor belt moves unidirectionally from right to left. The operation of the motors is controlled by a controller, which starts and stops them regularly at intermittent intervals to transport the battery cells in batches. The part closer to the right side of the conveying mechanism 5 is the loading side of the battery cells, and the part closer to the left side of the conveying mechanism 5 is the unloading side of the battery cells. The translational movement path of the second handling mechanism 3 passes over the middle section of the conveyor belt.

[0038] The feeding side of the conveying mechanism 5 is provided with a layout and alignment mechanism 51, which includes an alignment frame 511 and an alignment drive mechanism 512.

[0039] like Figure 14As shown, the conveyor belt of the conveyor mechanism 5 is symmetrically arranged on both sides, with a aligning frame 511 on each side. The extension direction of the aligning frame 511 is parallel to the conveying direction of the conveyor belt, and the aligning frame 511 is located on the opposite upper side of the conveyor belt. Each aligning frame 511 has mounting holes at even intervals, and a first aligning member 5111 and a second aligning member 5112 are fixedly installed in the mounting holes in an alternating arrangement. The first aligning member 5111 and the second aligning member 5112 are located in the area between the two aligning frames 511. The first aligning member 5111 has a straight structure, perpendicular to the extension direction of the aligning frame 511, and a downwardly extending aligning rod is fixedly provided at the end of the first aligning member 5111. The second aligning member 5112 is perpendicular to the extension direction of the aligning frame 511, and the end of the second aligning member 5112 extends vertically to both sides in a T-shape, with a downwardly extending aligning rod fixedly provided at the end extending to both sides.

[0040] like Figure 15 As shown, the alignment drive mechanism 512 is fixedly installed below the conveying mechanism 5. An alignment drive platform 5121 is movably mounted on the upper side of the alignment drive mechanism 512 via a guide rail slider mechanism. The alignment drive platform 5121 can perform reciprocating translational motion along the guide rail parallel to the extension direction of the conveyor belt. A guide rail slider mechanism is fixedly installed on the upper side of the alignment drive platform 5121, with its spatial orientation perpendicular to the extension direction of the conveyor belt. Two alignment frames 511 are respectively fixedly connected to sliders on the guide rail slider mechanism and are positioned at both ends of the guide rail. A motor-driven circulating pulley mechanism 5122 is horizontally arranged on the upper side of the grading drive platform 5121. The circulating pulley mechanism 5122 has a pulley ring shape including a pair of parallel slider sliding directions and opposite rotation directions. The sliders connected to the two grading frames 511 are respectively fixedly connected to the surfaces of the pulleys with opposite rotation directions. When the circulating pulley mechanism 5122 is started, the pulley will rotate unidirectionally. When the pulley rotates clockwise, the sliders connected to the pulley surfaces on both sides move synchronously towards the center of the grading drive platform 5121, and the grading frames 511 on both sides move closer to each other accordingly. When the pulley rotates counterclockwise, the sliders connected to the pulley surfaces on both sides move synchronously to both sides of the grading drive platform 5121, and the grading frames 511 on both sides move away from each other accordingly.

[0041] Regularization principle: like Figure 14As shown, when the battery cells are fed one by one from the right end of the conveyor mechanism 5, the spacing between adjacent battery cells will deviate. When the conveyor belt transports the battery cells to the arrangement and alignment mechanism 51, the conveyor belt will temporarily stop moving. The alignment frames 511 on both sides are driven by the pulleys of the circulating pulley mechanism 5122 and move synchronously towards the edge of the battery cells from both sides. Each second alignment member 5112 and the adjacent first alignment members 5111 on both sides form a half positioning space. The half positioning spaces on the left and right sides can be used to restrict and adjust the position of a single battery cell. Specifically, the alignment rod on the first alignment member 5111 will adjust and restrict the position of the battery cell along the conveyor belt transport direction when it contacts the longer side of the battery cell. The alignment rod on the second alignment member 5112 will adjust and restrict the position of the battery cell along the vertical conveyor belt transport direction when it contacts the shorter side of the battery cell. The adjusted spacing between the battery cells corresponds to the spacing between the four arrangement adsorption parts 31 on the second transport mechanism 3 after they are finally translated away and separated from each other. The reciprocating translational movement capability of the aligning drive platform 5121 is used to adjust the relative position of the aligning frame 511 along the conveyor belt transport direction, and can adapt to the situation where the battery cells do not fall into the aforementioned positioning space when the conveyor belt stops.

[0042] like Figure 13 As shown, the film-applying mechanism 52 is located on the unloading side of the conveying mechanism 5. The film-applying mechanism 52 includes a film-pressing plate 521, a film-applying table 522, and a film-applying mounting frame 523.

[0043] like Figure 16 As shown, the film mounting bracket 523 is located below the conveying mechanism 5. The film mounting bracket 523 is equipped with a guide rail slider mechanism. The movement direction of the slider is parallel to the extension direction of the conveyor belt of the conveying mechanism 5. Two independently movable film moving brackets 5231 are provided on the guide rail slider mechanism. The film moving brackets 5231 are arranged around the outer periphery of the conveying mechanism 5. There is a gap between the film moving brackets 5231 and the two sides of the conveying mechanism 5.

[0044] A pressure plate 521 is movably mounted between the upper end of the film-applying moving frame 5231 and the upper surface of the conveyor belt. A telescopic cylinder is fixedly mounted on the upper end of the film-applying moving frame 5231, and the telescopic end of the telescopic cylinder is fixedly connected to the pressure plate 521, which can drive the pressure plate 521 to perform vertical lifting and lowering movements. When the telescopic end of the telescopic cylinder extends, the pressure plate 521 descends to adhere to the upper surface of the conveyor belt; when the telescopic end of the telescopic cylinder retracts, the pressure plate 521 rises away from the upper surface of the conveyor belt. There is a gap space between the pressure plate 521 and the upper surface of the conveyor belt for the battery cells to pass through. An auxiliary pressure plate 5211 is mounted on the inner side of the film-applying moving frame 5231 at a position parallel to the upper surface of the conveyor belt. The two ends of the auxiliary pressure plate 5211 are slidably connected to the two sides of the film-applying moving frame 5231 through a guide rail slider mechanism, which is used to support the two sides of the battery cells that extend out of the conveyor belt.

[0045] The membrane platform 522 is positioned below the conveyor belt after the moving frame 5231, such as... Figure 17 As shown, the membrane platform 522 has a hollow cavity inside with pipes connecting to the negative pressure mechanism. The upper surface of the membrane platform 522, corresponding to the three-row perforated belt structure on the conveyor belt, has three rows of through holes. These through holes connect to the hollow cavity of the membrane platform 522. When the negative pressure mechanism is activated, the through holes of the membrane platform 522 continuously draw in air above the perforated belt of the conveyor belt to generate negative pressure suction and fix the battery cells on the conveyor belt. The membrane platform 522 also has a heating mechanism that can heat the battery cells and membrane strip assembly above the conveyor belt, promoting membrane strip adhesion.

[0046] In particular, such as Figure 14 As shown, a film-adhesive platform 522 is provided below the conveyor belt before passing through the arrangement and straightening mechanism 51. This film-adhesive platform 522 is used to preheat the battery cells so that when the second transport mechanism 3 unloads the film strip to the edge of the battery cell, the film strip can be pre-adhesive to the surface of the battery cell.

[0047] Principle of mucosal application: When the conveyor belt transports the battery cells to below the film-pressing plate 521, the conveyor belt will temporarily stop moving. The film-pressing plates 521 on the two parallel film-applying moving frames 5231 will be vertically aligned with the longer side of the same battery cell covered by the film strip. Driven by a telescopic cylinder, the film-pressing plates 521 descend and press against the upper surface of the film strip. The auxiliary pressing plates 5211 press against both sides of the lower surface supporting the battery cell, so that the film strip is tightly attached to the surface of the battery cell. Adjusting the distance between the two film-applying moving frames 5231 can accommodate battery cells of different widths; adjusting the relative position of the two film-applying moving frames 5231 and the film-applying mounting frame 523 can accommodate situations where the edge of the battery cell does not fall below the film-pressing plate 521 when the conveyor belt stops.

[0048] like Figure 18As shown, the buffer platform 6 is located in the middle section of the conveyor belt on the conveying mechanism 5, below the translational movement path of the second handling mechanism 3. The buffer platform 6 includes a pair of support brackets 60 extending along the conveyor belt direction of the conveying mechanism 5. The two support brackets 60 are respectively arranged in the space on both sides of the middle section of the conveyor belt. A buffer seat 61 is provided below the middle section of the conveyor belt. A telescopic cylinder is provided above the buffer seat 61. Both support brackets 60 are fixedly connected to the telescopic output end of the telescopic cylinder. Driven by the telescopic cylinder, they can float up and down synchronously on both sides of the conveyor belt. The maximum height of the support bracket 60 after rising is higher than the plane of the upper surface of the conveyor belt. When the conveyor belt moves to transport the battery cells, the support bracket 60 is driven to descend by the telescopic cylinder, and the upper surface of the support bracket 60 is lower than the upper surface of the conveyor belt. When the conveyor belt stops transporting the battery cells, the support bracket 60 is driven to rise by the telescopic cylinder, and the upper surface of the support bracket 60 is at the same level as the upper surface of the conveyor belt. This provides uniform support force for the part of the battery cell that extends out of both ends of the conveyor belt when the adsorption section 31 carries the adsorbed film strip down to the edge surface of the battery cell.

[0049] A visual inspection mechanism 8 is installed above the conveyor mechanism 5 on the feeding end side of the arrangement and straightening mechanism 51. It is used to detect the spacing of the battery cells and check whether the fed battery cells are damaged or defective. A visual inspection mechanism 8 is also installed above the conveyor mechanism 5 on the unloading end side of the film application mechanism 52. It is used to detect the quality of film application and check whether the coated battery cells are damaged.

[0050] The above description is merely a preferred embodiment of the present invention and is only intended to illustrate the principles and effects of the present invention. It is not intended to limit the present invention. All variations, modifications, and substitutions within the spirit and principles of this design are within the protection scope of the present invention.

Claims

1. A battery piece film pasting combination device, characterized in that: It includes a membrane strip cutting mechanism (1), a first handling mechanism (2), a second handling mechanism (3), a transition bearing mechanism (4), and a conveying mechanism (5); The membrane strip slitting mechanism (1) has the ability to slit membrane tape into membrane strips; Several adsorption sites (40) are arranged side by side on the transition bearing mechanism (4), all of which have the ability to selectively adsorb membrane strips; The conveying mechanism (5) is used to convey the battery cells to be coated with film strips and is configured to perform a unidirectional translational conveying motion with a regular intermittent rhythm. The conveying mechanism (5) has a arranging mechanism (51) for adjusting the spacing between battery cells on one side of the feeding end, and a film-attaching mechanism (52) for attaching film strips to battery cells on one side of the unloading end. The first transport mechanism (2) and the second transport mechanism (3) sequentially and stepwise transfer the slit membrane strips. Each of them has several actuators arranged side by side with selective adsorption capabilities for the membrane strips. All actuators have the ability to independently perform a distance-controllable translational movement along the arrangement direction. The number of actuators in the second transport mechanism (3) is several times the number of actuators in the first transport mechanism (2). The first transport mechanism (2) is used to pick up the membrane strip from the membrane strip cutting mechanism (1) and transport it to the adsorption position (40). The second transport mechanism (3) is used to pick up the membrane strip from the adsorption position (40) and place it on the edge of the battery cell after passing through the arrangement and straightening mechanism (51).

2. The device according to claim 1, wherein the device is characterized by: The membrane strip cutting mechanism (1) cuts the membrane strip into 2nm membrane strips, where n≥1 and m≥2; the first transport mechanism (2) is provided with 2n independent first adsorption parts (21), the transition bearing mechanism (4) is provided with at least two adsorption positions (40) spaced apart, each first adsorption part (21) is provided with m first adsorption ridges (211), and the second transport mechanism (3) is provided with 2nm independent adsorption parts (31).

3. The device according to claim 2, wherein the device is characterized by: When picking up the membrane strip, the 2n first adsorption parts (21) are closely attached to each other. Each first adsorption ridge (211) has a membrane strip adsorbed on it. During the transport and transfer of the membrane strip, the 2n first adsorption parts (21) are synchronously translated and divided into two groups. Each group contains n closely attached first adsorption parts (21), and the spacing between the groups corresponds to the arrangement spacing of the adsorption positions (40) on the transition bearing mechanism (4). The 2nm arranged adsorption parts (31) are divided into two groups when picking up the membrane strip, corresponding to different pick-up adsorption positions (40). Each group contains nm closely attached arranged adsorption parts (31). Each arranged adsorption part (31) has a membrane strip adsorbed on it. During the transport and transfer of the membrane strip, the closely attached arranged adsorption parts (31) are synchronously translated and separated. The moving membrane strip is arranged in an array structure corresponding to the edge of the battery cell.

4. The device according to claim 1, wherein the device is characterized by: The first transport mechanism (2) and the second transport mechanism (3) are provided with parallel positioning and locking mechanisms (7) on the translation path of their respective execution parts. Several locking positions (71) are evenly spaced on the positioning and locking mechanism (7). Any execution part has the ability to form a detachable and fixed connection with any locking position (71).

5. The device according to claim 1, wherein the device is characterized by: The arrangement and alignment mechanism (51) includes an alignment frame (511) and an alignment drive mechanism (512); the two alignment frames (511) are symmetrically arranged on both sides of the conveying mechanism (5). When the conveying mechanism (5) is in a stopped state, the two alignment frames (511) are driven by the alignment drive mechanism (512) and have the ability to move closer to or further away from the conveying mechanism (5) so as to align the position of the battery cells on the conveying mechanism (5) when they move closer to each other.

6. The device according to claim 1, wherein the device is characterized by: The film application mechanism (52) includes a film pressing plate (521), a film application table (522), and a film application mounting frame (523). The film pressing plate (521) is floatingly disposed above the conveying mechanism (5) and has the ability to lower and press the edge film strip of the battery cell. The film application table (522) is fixedly disposed below the conveying mechanism (5) and has the ability to adsorb and heat the pressed film strip and battery cell.

7. The device according to claim 1, wherein the device is characterized by: The transition bearing mechanism (4) includes a bearing platform (41) and a movable platform (42); the bearing platform (41) is provided with a number of adsorption positions (40) at intervals, and there are different intervals between adjacent adsorption positions (40). Each adsorption position (40) is provided with a number of adsorption holes (411) in an array along the direction of membrane strip cutting; the movable platform (42) has the ability to move back and forth on the upper side of the bearing platform (41).

8. The device according to claim 1, wherein the device is characterized by: The film strip slitting mechanism (1) includes a winding section (11), a slitting table (12), a traction section (13), and a guide section (14). The winding section (11) is provided with a plurality of conveying rollers (111) for winding and conveying the film strip. The slitting table (12) is located on the horizontal output side of the lowest conveying roller (111) of the winding section (11), and a film strip cutting section (121) is provided on the side close to the winding section (11). The traction section (13) is arranged parallel to the upper side of the slitting table (12) and has the ability to move in a translational manner along the film strip conveying direction. The traction section (13) is provided with a clamping section (131) for pulling the film strip. The guide section (14) is located on the horizontal side of the film strip cutting section (121), and an opening and closing section (141) is movably provided at the upper end of the guide section (14) for clamping and fixing the film strip.

9. The device according to claim 1, wherein the device is characterized by: It also includes a buffer platform (6); the buffer platform (6) has the ability to reciprocate and lift in the vertical direction, and the extreme position after lifting is higher than the conveying mechanism (5); the buffer platform (6) is floatingly set on both sides of the conveying mechanism (5) and located below the movement path of the second transport mechanism (3). When the upper actuator of the second transport mechanism (3) unloads the membrane strip, the position after moving away from each other is within the horizontal extension range of the buffer platform (6).

10. The device according to claim 1, wherein the device is characterized by: It also includes several visual inspection mechanisms (8); a visual inspection mechanism (8) is set above the conveying mechanism (5) on the feeding end side of the arrangement and regularization mechanism (51) to detect the arrangement spacing of the battery cells; a visual inspection mechanism (8) is set above the conveying mechanism (5) on the unloading end side of the film application mechanism (52) to detect the film strip application quality.

Images