A battery cell insulation strip laying and welding integrated machine and welding method

Abstract

The present invention discloses a battery cell insulation strip laying and welding integrated machine and welding method, the welding integrated machine comprises a machine body, and an introduction and correction device, a material feeding and welding device, a battery cell lifting device, and an insulation strip feeding device fixed on the machine body, the battery cell lifting device, the insulation strip feeding device, and the feeding and welding device are respectively located above the introduction and correction device, the introduction and correction device is provided with multiple groups of opposing laser sensors, and the battery cell is located between the transmitting end and the receiving end of the multiple groups of the opposing laser sensors. The present invention can avoid laying and welding the insulation strip when the EVA film and the bus bar are adhered together, and avoid the occurrence of defective products.

Description

Technical Field

[0001] The invention relates to the field of solar cell production, and more specifically to a solar cell insulation strip laying and welding integrated machine and a welding method. Background Art

[0002] During the production and preparation of solar cell strings, after the battery cells and busbars are welded, an insulating strip needs to be welded to the lower end of the busbar. Before welding the insulating strip, the battery cells need to be lifted first, and then the insulating strip is laid under the position of the busbar, and then the insulating strip is welded to the busbar. However, in the process of realizing the present invention, the inventors found that there are the following problems in the prior art: an EVA film is laid under the battery cells, and during the welding process of the busbar and the battery cells, part of the EVA film and the busbar will adhere together. In the process of lifting the battery cells, the EVA film will be lifted up as the battery cells are lifted, so that the laying and welding of the insulating strip cannot be completed, which leads to the appearance of defective products. Summary of the invention

[0003] The object of the present invention is to provide an all-in-one machine and method for laying and welding insulating strips of a battery cell. The present invention can avoid laying and welding insulating strips when the EVA film and the bus bar are adhered together, thereby avoiding the occurrence of defective products.

[0004] The technical solution is as follows:

[0005] In one embodiment, the present invention discloses an all-in-one machine for laying and welding insulation strips of a battery cell.

[0006] The integrated machine for laying and welding the insulating strips of the battery cell comprises a machine body, and an introduction and correction device, a material loading and welding device, a battery cell lifting device, and an insulating strip loading device fixed on the machine body. The battery cell lifting device, the insulating strip loading device, and the loading and welding device are respectively located above the introduction and correction device. A plurality of groups of opposing laser sensors are provided on the introduction and correction device, and the battery cells are located between the transmitting ends and the receiving ends of the plurality of groups of opposing laser sensors.

[0007] Furthermore, two insulating strip storage devices are provided on the machine body, and the two insulating strip storage devices are respectively located on the opposite side edges of the introduction and correction device; the insulating strip storage device includes a storage base plate, and the storage base plate is provided with a plurality of storage mechanisms arranged side by side in the width direction of the storage base plate, and the storage mechanism includes at least a storage silo, and the EPE insulating strips are stored in the storage silo.

[0008] Furthermore, the storage mechanism also includes a length limiting component, a width limiting component, a length adjustment component and a width adjustment component. The length limiting component and the width limiting component form the storage silo, the length adjustment component is connected to the length limiting component, and the width adjustment component is connected to the width limiting component.

[0009] Furthermore, a pre-loading tooling device is also provided on the machine body, and the pre-loading tooling device is located on one side of the insulating strip feeding device. The pre-loading tooling device includes three pre-loading tooling platforms, and each of the pre-loading tooling platforms is respectively provided with a plurality of first vacuum adsorption holes.

[0010] Furthermore, the feeding and welding device includes an end welding mechanism, a middle welding mechanism and a tail welding mechanism; the end welding mechanism and the tail welding mechanism both include a first welding base plate, and a first feeding table, a first welding assembly, a first X-axis welding moving assembly, a first Y-axis welding moving assembly and a first Z-axis welding moving assembly fixed on the first welding base plate, the first welding assembly is located on one side of the first feeding table, a plurality of first hot pressing heads are provided on the first welding assembly, and the first X-axis welding moving assembly, the first Y-axis welding moving assembly and the first Z-axis welding moving assembly are respectively connected to the first welding assembly.

[0011] Furthermore, the middle welding mechanism includes a second welding base plate, a second loading table fixed on the second welding base plate, and a second welding assembly, a second X-axis welding moving assembly, and a second Z-axis welding moving assembly fixed on the battery cell lifting device, the second Z-axis welding moving assembly is connected to the second X-axis welding moving assembly, the second welding assembly is connected to the second X-axis welding moving assembly, and the second welding assembly is provided with a plurality of second hot pressing heads.

[0012] Furthermore, the insulating strip feeding device includes a first feeding mechanism and a second feeding mechanism, the first feeding mechanism and the second feeding mechanism both include a first feeding and transferring assembly, a second feeding and transferring assembly, a feeding assembly, an insulating strip detection assembly, and a contact pressure rod assembly, the second feeding and transferring assembly is connected to the first feeding and transferring assembly, and the feeding assembly, the insulating strip detection assembly, and the contact pressure rod assembly are all fixed on the second feeding and transferring assembly.

[0013] Furthermore, the battery cell lifting device includes a lifting body, multiple lifting drive components, multiple first vacuum nozzles and multiple photographing and positioning components. The multiple lifting drive components are respectively connected to the lifting body, and the multiple first vacuum nozzles and multiple photographing and positioning components are respectively fixed on the lifting body.

[0014] Furthermore, a welding transfer device is also provided on the machine body, and the welding transfer device includes a plurality of welding transfer mechanisms, and the plurality of welding transfer mechanisms are respectively connected to the feeding welding device.

[0015] In another embodiment of the present invention, a method for laying and welding a battery cell insulation strip is also disclosed, comprising the following steps:

[0016] Provide battery cells to be welded and EPE insulation strips to be welded;

[0017] The correction device is introduced to correct the battery cell, and at the same time, the insulation strip feeding device transfers the EPE insulation strip to the feeding welding device;

[0018] The cell lifting device lifts the corrected cell upwards by 6mm-10mm and then pauses. The through-beam laser sensor detects whether the busbar on the cell is adhered to the EVA film.

[0019] If there is no adhesion, the battery cell lifting device continues to lift the battery cell upward to a predetermined position;

[0020] The loading welding device drives the EPE insulating strip into the welding position, and the battery cell lifting device drives the battery cell to move downward, so that the bus bar on the battery cell overlaps with the EPE insulating strip up and down;

[0021] The loading and welding device welds the busbar to its corresponding EPE insulating strip. After the EPE insulating strip is welded, the loading and welding device is reset, the battery cell lifting device drives the battery cell to move downward, and the battery cell is placed on the guide rail correction device for transportation.

[0022] The advantages or principles of the present invention are described below:

[0023] 1. The integrated battery cell insulation strip laying and welding machine of the present invention is provided with a plurality of groups of opposing laser sensors on the introduction and correction device. The battery cell is generally placed on a glass carrier. When welding the EPE insulation strip, the battery cell is first placed on the introduction and correction device, and then the battery cell lifting device lifts the battery cell upward by a certain distance, and a plurality of groups of opposing laser sensors detect whether the bus bar on the battery cell is adhered to the EVA film. If the EVA film is not lifted, the battery cell lifting device continues to lift the battery cell upward. If the EVA film is lifted, the battery cell lifting device puts the battery cell back on the introduction and correction device, and transports the battery cell out for processing. The present invention detects the adhesion between the bus bar and the EVA by setting a plurality of groups of opposing laser sensors, so as to avoid the laying and welding of the EPE insulation strip when the EAV film is adhered to the bus bar, and avoid the occurrence of defective products.

[0024] 2. Before welding, the EPE insulating strip is placed in the storage silo for storage. The length adjustment component drives the length limit component to move, so that the storage silo can be suitable for the storage of EPE insulating strips of different lengths. The width adjustment component drives the width limit component to move, so that the storage silo can be suitable for the storage of EPE insulating strips of different widths.

[0025] 3. The machine body is also provided with a pre-loading tooling device. Before the EPE insulating strip is transferred to the feeding welding device, it can be first transferred to the pre-loading tooling device for storage. The pre-loading tooling device can avoid the stacking of multiple EPE insulating strips due to static electricity and other reasons, and avoid poor welding caused by the stacking of EPE insulating strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a battery cell insulation strip laying and welding machine;

[0027] Figure 2 It is another structural schematic diagram of the battery cell insulation strip laying and welding integrated machine;

[0028] Figure 3 It is a schematic diagram of the structure of the introduction correction device;

[0029] Figure 4 It is a schematic diagram of the structure inside the body of a battery cell insulation strip laying and welding all-in-one machine;

[0030] Figure 5 It is a schematic diagram of the structure of the end welding mechanism or the tail welding mechanism;

[0031] Figure 6 It is a structural schematic diagram of the first feeding mechanism or the second feeding mechanism;

[0032] Figure 7 It is a schematic diagram of the structure of the battery cell lifting device;

[0033] Figure 8 It is a structural diagram of the central welding mechanism;

[0034] Fig. 9 It is a structural diagram of the central welding mechanism;

[0035] Description of reference numerals:

[0036] 1. Machine body; 2. Introducing and correcting device; 3. Loading and welding device; 4. Cell lifting device; 5. Insulating strip loading device; 6. Opposing laser sensor; 7. Insulating strip storage device; 70. Storage base plate; 71. Storage bin; 72. Length limit plate; 73. Length adjustment seat; 74. Width limit plate; 75. Width limit rod; 76. Width adjustment base; 77. Adjusting screw; 8. Loading pre-tooling device; 81. Loading pre-tooling platform; 82. First vacuum adsorption hole; 30. End welding mechanism; 31. Middle welding mechanism; 32. Tail welding mechanism; 301. First welding base plate; 302. First loading platform; 303. First welding assembly; 304. First X-axis welding moving assembly; 305. First Y-axis welding moving assembly; 306. First Z-axis welding moving assembly; 307. First hot pressing head; 9. Welding transfer mechanism ;51, the first feeding mechanism;52, the second feeding mechanism;511, the first feeding and transferring assembly;512, the second feeding and transferring assembly;513, the feeding assembly;514, the insulating strip detection assembly;515, the contact pressure rod assembly;5131, the feeding fixing plate;5132, the second vacuum suction nozzle;5151, the pressure rod fixing seat;5152, the pressure rod;5153, the spring;5154, the contact sensor;5155, the contact plate;21, the introduction and correction frame;22, the first introduction and correction assembly;23, the second introduction and correction assembly;41, the first vacuum suction nozzle;42, the camera positioning assembly;43, the lifting body;44, the lifting drive assembly;310, the second welding base plate;311, the second feeding platform;313, the second welding assembly;314, the second X-axis welding moving assembly;315, the second Z-axis welding moving assembly;316, the second hot pressing head. DETAILED DESCRIPTION

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "middle", "inside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0039] like Figure 1 , Figure 2 As shown, the present invention discloses, in one embodiment, a battery cell insulation strip laying and welding integrated machine.

[0040] The battery cell insulation strip laying and welding integrated machine of this embodiment includes a machine body 1, and an introduction and correction device 2, a material feeding and welding device 3, a battery cell lifting device 4, and an insulation strip feeding device 5 fixed on the machine body 1. The battery cell lifting device 4, the insulation strip feeding device 5, and the feeding and welding device 3 are respectively located above the introduction and correction device 2. Figure 3 As shown, the introduction and correction device 2 is provided with a plurality of groups of opposing laser sensors 6, and the battery sheet is located between the transmitting end and the receiving end of the plurality of groups of the opposing laser sensors 6. The introduction and correction device 2 is provided with an introduction and correction position, and the plurality of groups of opposing laser sensors 6 are located above the introduction and correction position.

[0041] The battery cell is generally placed on a glass carrier. Before using the battery cell insulation laying integrated machine for EPE insulation strip laying and welding, the glass carrier with the battery cell is first transported to the introduction and correction device 2, and the battery cell is corrected by the introduction and correction device 2. Then the battery cell lifting device 4 lifts the battery cell upward by a certain distance, preferably, the battery cell is lifted by 6mm to 8mm. Then, multiple opposing laser sensors 6 are used to detect whether the battery cell lifts the EVA film together during the lifting process, so as to determine whether the bus bar on the battery cell is adhered to the EVA film.

[0042] If the receiving end of the laser sensor does not receive the signal from the transmitting end during the detection process, the busbar is adhered to the EVA film. The battery cell lifting device 4 puts the battery cell back on the introduction and correction device 2 and transports the battery cell out for processing. If it is detected that the busbar is not adhered to the EVA film, the battery cell lifting device 4 continues to lift the battery cell upward to a predetermined position.

[0043] Then the loading welding device 3 moves the EPE insulating strip to the welding position, and then the battery cell lifting device 4 moves the battery cell downward, and makes the bus bar on the battery cell overlap with the corresponding EPE insulating strip. Then the loading welding device 3 starts welding to weld the battery cell and the EPE insulating strip together. After welding is completed, the battery cell lifting device 4 drives the battery cell to move upward a certain distance, and then the loading welding device 3 is reset, and then the battery cell lifting device 4 drives the battery cell to move downward and places the battery cell on the glass stage, and finally the welded battery cell is transported out.

[0044] In this embodiment, a plurality of opposing laser sensors 6 are arranged on the introduction and correction device 2 to detect whether the bus bar and the EVA film are adhered, thereby avoiding welding of the EPE insulating strip when the bus bar and the EVA film are adhered, thereby avoiding the occurrence of defective products.

[0045] Before welding the EPE insulating strip, the EPE insulating strip to be welded needs to be placed on the machine body 1. In order to facilitate the storage of the EPE insulating strip, two insulating strip storage devices 7 are provided on the machine body 1 in this embodiment, and the two insulating strip storage devices 7 are respectively located on the opposite sides of the introduction and correction device 2. Figure 4As shown, the insulating strip storage device 7 includes a storage base plate 70, and the storage base plate 70 is provided with a plurality of storage mechanisms arranged side by side in the width direction of the storage base plate 70, and the storage mechanism includes at least a storage silo 71, and the EPE insulating strips are stored in the storage silo 71. Preferably, in this embodiment, the insulator storage device 7 located on the left is provided with two storage silos 71 for storing the tail EPE insulating strips, and the insulating strip storage device 7 located on the right is provided with four storage silos 71, of which two storage silos 71 are used to store the middle EPE insulating strips, and the other two storage silos 71 are used to store the end EPE insulating strips. 400-500 pieces of EPE insulating strips can be placed in each storage silo 71. The EPE insulating strips stored in the storage silo 71 can meet the demand of one strip. When preparing materials, the storage silo 71 can be pulled out manually.

[0046] Furthermore, the storage mechanism also includes a length limiting component, a width limiting component, a length adjustment component and a width adjustment component. The length limiting component and the width limiting component surround the storage bin 71, the length adjustment component is connected to the length limiting component, and the width adjustment component is connected to the width limiting component.

[0047] The length limiting assembly includes two length limiting plates 72, and the two length limiting plates 72 are arranged opposite to each other in the length direction of the storage bin 71. The length adjusting assembly includes two length adjusting seats 73, and the two length limiting plates 72 are fixed on the two length adjusting seats 73 respectively, and the two length adjusting seats 73 are movably connected to the storage base plate 70. Preferably, a first connecting hole is provided on the length limiting seat, and a plurality of second connecting holes are provided on the storage base plate 70, and the length limiting seat can be fixed to the storage base plate 70 by inserting fasteners into the first connecting hole and the second connecting hole. When it is necessary to adjust the distance of the length limiting plates 72, the fasteners are removed, the length adjusting seat 73 is moved, and the first connecting hole of the length adjusting seat 73 is made to correspond to a second connecting hole, and then the fasteners are inserted into the first connecting hole and the second connecting hole to fix it.

[0048] The width limiting assembly includes two width limiting plates 74, which are arranged opposite to each other in the width direction of the storage bin 71. A plurality of width limiting rods 75 are respectively arranged on each width limiting plate 74. The width adjustment assembly includes a width adjustment base 76 and two adjustment screws 77, wherein one width limiting plate 74 is fixed on the width adjustment base 76, and the two adjustment screws 77 are both fixed on the storage bottom plate 70, and the two adjustment screws 77 are respectively movably connected with the width adjustment base 76. The position of the width adjustment base 76 can be adjusted by adjusting the screws 77, thereby adjusting the width of the storage bin 71.

[0049] In order to prevent the EPE insulating strip from laminating due to static electricity and other reasons, in this embodiment, a pre-loading tooling device 8 is further provided on the machine body 1, and the pre-loading tooling device 8 is located on one side of the insulating strip feeding device 5, and the pre-loading tooling device 8 includes three pre-loading tooling platforms 81. Among them, two pre-loading tooling platforms 81 are located on one side of one insulating strip storage device 7, and another pre-loading tooling platform 81 is located on one side of another insulating strip storage device 7. Each pre-loading tooling platform 81 is provided with a plurality of first vacuum adsorption holes 82, and the EPE insulating strip is adsorbed through the first vacuum adsorption holes 82.

[0050] When welding EPE insulating strips to battery cells, it is generally necessary to weld EPE insulating strips to the bus bars at the end, middle and tail of the battery cells respectively. Since the size of the bus bars welded at each position may be the same or different, three pre-loading tooling platforms 81 are provided in this embodiment. First, the EPE insulating strips are transferred from the storage bin 71 to the three pre-loading tooling platforms 81 by the insulating strip feeding device 5, and then the EPE insulating strips on the pre-loading tooling platform 81 are transferred to the feeding welding device 3 by the insulating strip feeding device 5. Since the first vacuum adsorption hole 82 is provided on the pre-loading tooling platform 81, when the insulating strip feeding device 5 transfers the EPE insulating strips from the pre-loading tooling platform 81, it can avoid the stacking of multiple EPE insulating strips due to static electricity and other reasons, and avoid poor welding caused by the stacking of EPE insulating strips.

[0051] In order to realize the welding of the EPE insulating strip and the bus bar, the feeding welding device 3 of this embodiment includes an end welding mechanism 30, a middle welding mechanism 31 and a tail welding mechanism 32. The end welding mechanism 30 is used to weld the bus bar at the end of the battery cell, the middle welding mechanism 31 is used to weld the bus bar in the middle of the battery cell, and the tail welding mechanism 32 is used to weld the bus bar at the tail of the battery cell.

[0052] like Figure 5As shown, the end welding mechanism 30 has the same structure as the tail welding mechanism 32. Both the end welding mechanism 30 and the tail welding mechanism 32 include a first welding base plate 301, and a first loading platform 302, a first welding assembly 303, a first X-axis welding moving assembly 304, a first Y-axis welding moving assembly 305, and a first Z-axis welding moving assembly 306 fixed on the welding base plate. The first loading platform 302 is provided with a plurality of second vacuum adsorption holes, and the EPE insulating strip is placed on the first loading platform 302 and adsorbed by the plurality of second vacuum adsorption holes to prevent the EPE insulating strip from moving on the first loading platform 302. The first welding assembly 303 is located on one side of the first loading platform 302, and the first welding assembly 303 is provided with a plurality of first hot pressing heads 307, and the first X-axis welding moving assembly 304, the first Y-axis welding moving assembly 305, and the first Z-axis welding moving assembly 306 are respectively connected to the first welding assembly 303. Preferably, the first hot pressing head 307 is a self-heating ceramic welding head.

[0053] When the end welding mechanism 30 and the tail welding mechanism 32 are performing welding operations, the end welding mechanism 30 is first moved to the bottom of the end bus bar of the battery cell, and the tail welding mechanism 32 is moved to the bottom of the tail bus bar of the battery cell. Then the battery cell lifting device 4 drives the battery cell to move downward, and the end bus bar is pressed down on the EPE insulating strip of the first loading platform 302 of the end welding mechanism 30, and the tail bus bar is pressed down on the EPE insulating strip of the first loading platform 302 of the tail welding mechanism 32. Then the first X-axis welding moving component 304, the first Y-axis welding moving component 305 and the first Z-axis welding moving component 306 drive the first welding component 303 to move, so that the multiple first hot pressing heads 307 are pressed on the top of the bus bar, and then the multiple first hot pressing heads 307 are used for welding, so that the bus bar and the EPE insulating strip are welded together.

[0054] Due to the different sizes of battery cells, in order to make the end welding mechanism 30 and the tail welding mechanism 32 suitable for welding battery cells of different sizes, multiple first hot pressing heads 307 are movably connected on the first welding assembly 303, and the positions of the multiple first hot pressing heads 307 on the first welding assembly 303 can be adjusted manually.

[0055] In order to realize the movement of the first welding assembly 303 in the X-axis, Y-axis and Z-axis, the first X-axis welding moving assembly 304 includes an X-axis welding moving cylinder, the first Y-axis welding moving assembly 305 includes a Y-axis welding moving cylinder, and the first Z-axis welding moving assembly 306 includes a Z-axis welding moving cylinder. The movement of the first welding assembly 303 in the X-axis, Y-axis and Z-axis is realized by the X-axis welding moving cylinder, the Y-axis welding moving cylinder and the Z-axis welding moving cylinder.

[0056] When the welding mechanism in the middle welds the busbar in the middle of the battery cell, it is generally necessary to weld the two busbars to the EPE insulation strips between the two battery strings. Fig. 9 As shown, the middle welding mechanism 31 includes a second welding base plate 310, a second loading platform 311 fixed on the second welding base plate 310, and a second welding assembly 313, a second X-axis welding moving assembly 314, and a second Z-axis welding moving assembly 315 fixed on the battery cell lifting device 4. The second Z-axis welding moving assembly 315 is connected to the second X-axis welding moving assembly 314, the second welding assembly 313 is connected to the second X-axis welding moving assembly 314, and a plurality of second hot pressing heads 316 are provided on the second welding assembly 313. Preferably, the second hot pressing head 316 is a self-heating ceramic hot pressing head.

[0057] When the middle welding mechanism 31 needs to weld the EPE insulating strip to the bus bar in the middle of the battery cell, the second welding base plate 310 first drives the second loading platform 311 to move below the middle bus bar. Then the battery cell lifting device 4 drives the battery cell to move downward, so that the bus bar in the middle of the battery cell is pressed on the EPE insulating strip. Then the second X-axis welding moving component 314 drives the second welding component 313 to move in the Z axis, and moves the multiple second hot pressing heads 316 to just above the middle bus bar. Finally, the second Z-axis welding moving component 315 drives the multiple second hot pressing heads 316 to move downward, and press them above the middle fluid strip, and welding can be achieved directly through the multiple second hot pressing heads 316.

[0058] In order to make the middle welding mechanism 31 suitable for welding battery cells of different sizes, the multiple second thermal compression heads 316 of this embodiment can also be manually moved on the second welding assembly 313 to adjust the positions of the multiple second thermal compression heads 316.

[0059] After the cell lifting device 4 lifts the cell, it is necessary to move the end welding mechanism 30, the middle welding mechanism 31 and the tail welding mechanism 32 to the welding position. In order to realize the movement of the end welding mechanism 30, the middle welding mechanism 31 and the tail welding mechanism 32, a welding transfer device is also provided on the body 1. The welding transfer device includes a plurality of welding transfer mechanisms 9, and the plurality of welding transfer mechanisms 9 are respectively connected to the feeding welding device 3.

[0060] Preferably, the plurality of welding transfer mechanisms 9 are respectively an end welding transfer mechanism, a middle welding transfer mechanism and a tail welding transfer mechanism. Among them, the end welding transfer mechanism is connected to the end welding mechanism 30, the middle welding transfer mechanism is connected to the middle welding mechanism 31, and the tail welding transfer mechanism is connected to the tail welding mechanism 32. Further, the end welding transfer mechanism, the middle welding transfer mechanism and the tail welding transfer mechanism can respectively drive the ball screw to drive the end welding mechanism 30, the middle welding mechanism 31 and the tail welding mechanism 32 to move by driving the motor. The end welding transfer mechanism, the middle welding transfer mechanism and the tail welding transfer mechanism can also respectively drive the belt to rotate by the driving motor, thereby driving the movement of the end welding mechanism 30, the middle welding mechanism 31 and the tail welding mechanism 32.

[0061] The insulating strip feeding device 5 of this embodiment includes a first feeding mechanism 51 and a second feeding mechanism 52. The first feeding mechanism 51 is used to transfer the EPE insulating strip from the storage bin 71 to the feeding pre-tooling device 8, and transfer the EPE insulating strip on the feeding pre-tooling device 8 to the middle welding mechanism 31 and the end welding mechanism 30. The second feeding mechanism 52 is used to transfer the EPE insulating strip from the storage bin 71 to the feeding pre-tooling device 8, and transfer the EPE insulating strip on the feeding pre-tooling device 8 to the tail welding mechanism 52.

[0062] like Figure 6 As shown, the first loading mechanism 51 and the second loading mechanism 52 have the same structure, and both the first loading mechanism 51 and the second loading mechanism 52 include a first loading and moving assembly 511, a second loading and moving assembly 512, a loading assembly 513, an insulating strip detection assembly 514, and a contact pressure rod assembly 515. The second loading and moving assembly 512 is connected to the first loading and moving assembly 511, and the loading assembly 513, the insulating strip detection assembly 514, and the contact pressure rod assembly 515 are all fixed on the second loading and moving assembly 512. The first loading and moving assembly 511 can drive the second loading and moving assembly 512 to move in the X-axis direction, and the second loading and moving assembly 512 drives the loading assembly 513, the insulating strip detection assembly 514, and the contact pressure rod assembly 515 to move in the Z-axis.

[0063] Furthermore, the first loading and transferring assembly 511 and the second loading and transferring assembly 512 are driven by motors respectively. The loading assembly 513 includes a loading fixed plate 5131 and a plurality of second vacuum nozzles 5132, and the plurality of second vacuum nozzles 5132 are respectively fixed on the loading fixed plate 5131, and the insulation strip detection assembly 514 and the contact pressure rod assembly 515 are respectively fixed on the loading fixed plate 5131. Preferably, the insulation strip detection assembly 514 is a sensor, and the insulation strip detection assembly 514 is used to detect whether there is an EPE insulation strip in the storage bin 71.

[0064] like Figure 7 As shown, the contact pressure bar assembly 515 includes a pressure bar fixing seat 5151, a pressure bar 5152, a spring 5153 and a contact sensor 5154. The pressure bar fixing seat 5151 is fixed on the feeding fixed plate 5131. The pressure bar 5152 is movably arranged on the pressure bar fixing seat 5151. The pressure bar 5152 is sleeved with a spring 5153, and the spring 5153 is located between the pressure bar fixing seat and the bottom of the pressure bar 5152. The top of the pressure bar 5152 is fixed with a contact plate 5155, and the contact sensor 5154 is fixed on the pressure bar fixing seat 5151, and the contact plate 5155 is in contact with the contact sensor 5154.

[0065] When the first feeding mechanism 51 and the second feeding mechanism 52 transfer the EPE insulating strip, the insulating strip detection component 514 detects whether there is an EPE insulating strip. After the EPE insulating strip is detected, the second feeding and transferring component 512 drives the feeding fixed plate 5131 to move downward, and when the bottom of the pressure rod 5152 contacts the EPE insulating strip, the feeding fixed plate 5131 continues to move downward. After the pressure rod 5152 contacts and squeezes the EPE insulating strip, the pressure rod 5152 moves upward on the pressure rod fixing seat 5151. When the contact plate 5155 is out of contact with the contact sensor 5154, the multiple second vacuum suction nozzles 5132 start to suck the EPE insulating strip. Then the second feeding and transferring component 512 drives the EPE insulating strip to move upward.

[0066] The introduction and correction device 2 of this embodiment includes an introduction and correction frame 21, a plurality of first introduction and correction components 22, and a plurality of second introduction and correction components 23. The plurality of first introduction and correction components 22 and the plurality of second introduction and correction components 23 are respectively located on the introduction and correction frame 21. The first introduction and correction component 22 drives the belt to rotate through the motor, thereby realizing the movement of the battery sheet in the left and right direction. The plurality of second introduction and correction components 23 drives the belt to rotate through the motor, thereby realizing the movement of the battery sheet in the front and back direction.

[0067] like Figure 8 As shown, the cell lifting device 4 includes a lifting body 43, a plurality of lifting drive components 44, a plurality of first vacuum nozzles 41 and a plurality of photographing and positioning components 42. The plurality of lifting drive components 44 are respectively connected to the lifting body 43, and the plurality of lifting drive components 44 drive the lifting body 43 to move upward or downward. Preferably, the plurality of lifting drive components 44 drive the lifting body 43 to move respectively through a servo motor.

[0068] A plurality of first vacuum suction nozzles 41 and a plurality of photographing and positioning components 42 are respectively fixed on the lifting body 43. The cell lifting device 4 absorbs a plurality of cells through a plurality of first vacuum suction nozzles 41, thereby driving the cells to move upward or downward. The plurality of photographing and positioning components 42 include a plurality of CCD cameras, which are used to detect whether the bus bars at the end, middle and tail overlap with the EPE insulating strips. Generally, the side lines of the bus bars and the side lines of the EPE insulating strips can be staggered by 1mm±0.5mm. If it exceeds, the position of the EPE insulating strip needs to be adjusted.

[0069] In another embodiment of the present invention, a method for laying and welding a battery cell insulation strip is also disclosed, comprising the following steps:

[0070] S10: Provide the battery cells to be welded and the EPE insulation strips to be welded.

[0071] The above-mentioned EPE insulating strips include end EPE insulating strips, middle EPE insulating strips and tail EPE insulating strips.

[0072] S20: The alignment device 2 is introduced to align the battery cell, and at the same time, the insulation strip feeding device 5 transfers the EPE insulation strip to the feeding and welding device 3.

[0073] Before transferring the EPE insulating strip to the loading and welding device 3, the insulating strip loading device 5 can first transfer the EPE insulating strip to the loading pre-tooling device 8 through the insulating strip loading device 5, and then transfer the EPE insulating strip to the loading and welding device 3 through the insulating strip loading device 5.

[0074] S30: the cell lifting device 4 lifts the corrected cell upward by 6 mm-10 mm and then pauses, and the through-beam laser sensor 6 detects whether the bus bar on the cell is adhered to the EVA film.

[0075] S40: If there is no adhesion, the cell lifting device 4 continues to lift the cell upward to a predetermined position; if the bus bar on the cell is adhered to the EVA film, the correction device directly transports the cell out for processing.

[0076] S50: The loading welding device 3 drives the EPE insulating strip into the welding position, and the battery cell lifting device 4 drives the battery cell to move downward, and makes the bus bar on the battery cell overlap with the EPE insulating strip. In order to facilitate the correction of the EPE insulating strip, the bus bar and the EPE insulating strip are generally staggered by 1mm-2mm. Before welding, the bus bar and the EPE insulating strip at the end, middle and tail are generally detected by a CCD camera to determine whether the position of the EPE insulating strip needs to be adjusted.

[0077] S60: The loading and welding device 3 welds the bus bar and its corresponding EPE insulating strip. After the welding of the EPE insulating strip is completed, the loading and welding device 3 is reset, the battery cell lifting device 4 drives the battery cell to move downward, and places the battery cell on the guide rail alignment device for transportation.

[0078] S70: During welding, the welding time is generally 2-3 seconds, and 2-3 welding points are generally welded on each single section of bus bar, and the total number of welding points on a bus bar is generally not more than 12 points.

[0079] The implementation methods of the present invention are not limited to this. According to the above content of the present invention, using common technical knowledge and customary means in the field, without departing from the above basic technical ideas of the present invention, the present invention can also make other various forms of modification, replacement or combination, all of which fall within the scope of protection of the present invention.

Claims

1. A battery cell insulation strip laying and welding integrated machine, characterized in that: It includes a machine body, and an introduction and correction device, a material feeding and welding device, a battery cell lifting device, and an insulating strip feeding device fixed on the machine body, wherein the battery cell lifting device, the insulating strip feeding device, and the material feeding and welding device are respectively located above the introduction and correction device, and a plurality of groups of opposing laser sensors are provided on the introduction and correction device, and the battery cells are located between the transmitting ends and the receiving ends of the plurality of groups of opposing laser sensors; The machine body is also provided with two insulating strip storage devices, which are respectively located on two opposite sides of the introduction and correction device; the insulating strip storage device includes a storage bottom plate, and the storage bottom plate is provided with a plurality of storage mechanisms arranged side by side in the width direction of the storage bottom plate, and the storage mechanism at least includes a storage silo, and the EPE insulating strips are stored in the storage silo; the storage mechanism also includes a length limiting component, a width limiting component, a length adjustment component and a width adjustment component, the length limiting component and the width limiting component enclose the storage silo, the length adjustment component is connected to the length limiting component, and the width adjustment component is connected to the width limiting component; The machine body is also provided with a pre-loading tooling device, which is located on one side of the insulating strip feeding device, and includes three pre-loading tooling platforms, each of which is provided with a plurality of first vacuum adsorption holes; The feeding and welding device includes an end welding mechanism, a middle welding mechanism and a tail welding mechanism; the end welding mechanism and the tail welding mechanism both include a first welding base plate, and a first feeding table, a first welding assembly, a first X-axis welding moving assembly, a first Y-axis welding moving assembly and a first Z-axis welding moving assembly fixed on the first welding base plate, the first welding assembly is located on one side of the first feeding table, a plurality of first hot pressing heads are provided on the first welding assembly, and the first X-axis welding moving assembly, the first Y-axis welding moving assembly and the first Z-axis welding moving assembly are respectively connected to the first welding assembly.

2. The battery cell insulation strip laying and welding integrated machine according to claim 1, characterized in that: The middle welding mechanism includes a second welding base plate, a second loading table fixed on the second welding base plate, and a second welding assembly, a second X-axis welding moving assembly, and a second Z-axis welding moving assembly fixed on the battery cell lifting device. The second Z-axis welding moving assembly is connected to the second X-axis welding moving assembly, and the second welding assembly is connected to the second X-axis welding moving assembly. The second welding assembly is provided with a plurality of second hot pressing heads.

3. The battery cell insulation strip laying and welding integrated machine according to claim 1, characterized in that: The insulating strip feeding device includes a first feeding mechanism and a second feeding mechanism. The first feeding mechanism and the second feeding mechanism both include a first feeding and transferring assembly, a second feeding and transferring assembly, a feeding assembly, an insulating strip detection assembly, and a contact pressure rod assembly. The second feeding and transferring assembly is connected to the first feeding and transferring assembly. The feeding assembly, the insulating strip detection assembly, and the contact pressure rod assembly are all fixed on the second feeding and transferring assembly.

4. The integrated battery cell insulation strip laying and welding machine according to claim 1, characterized in that: The battery cell lifting device includes a lifting body, multiple lifting drive components, multiple first vacuum suction nozzles and multiple photographing and positioning components. The multiple lifting drive components are respectively connected to the lifting body, and the multiple first vacuum suction nozzles and multiple photographing and positioning components are respectively fixed on the lifting body.

5. The integrated battery cell insulation strip laying and welding machine according to claim 1, characterized in that: The machine body is also provided with a welding transfer device, which includes a plurality of welding transfer mechanisms, and the plurality of welding transfer mechanisms are respectively connected to the feeding welding device.

6. A method for laying and welding the insulation strip of a battery cell applied to the integrated machine for laying and welding the insulation strip of a battery cell as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Provide battery cells to be welded and EPE insulation strips to be welded; The correction device is introduced to correct the battery cell, and at the same time, the insulation strip feeding device transfers the EPE insulation strip to the feeding welding device; The cell lifting device lifts the corrected cell upwards by 6mm-10mm and then pauses. The through-beam laser sensor detects whether the busbar on the cell is adhered to the EVA film. If there is no adhesion, the battery cell lifting device continues to lift the battery cell upward to a predetermined position; The loading welding device drives the EPE insulating strip into the welding position, and the battery cell lifting device drives the battery cell to move downward, so that the bus bar on the battery cell overlaps with the EPE insulating strip up and down; The loading and welding device welds the busbar to its corresponding EPE insulating strip. After the EPE insulating strip is welded, the loading and welding device is reset, the battery cell lifting device drives the battery cell to move downward, and the battery cell is placed on the guide rail correction device for transportation.

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