A square battery cell encapsulation device, system and method

Abstract

The present invention provides a square battery cell encapsulation device, system and method, which relates to the field of battery production. The square battery cell encapsulation device includes a clamping and rotating mechanism for clamping the battery cell and driving the battery cell to rotate around its own height direction, so that the tape adhered to the surface of the battery cell is wound around the battery cell; a servo mechanism, the clamping and rotating mechanism is movably connected to the servo mechanism, and the servo mechanism is used to drive the clamping and rotating mechanism to move horizontally; a glue pressing mechanism, the glue pressing mechanism includes a glue pressing roller; the servo mechanism cooperates with the clamping and rotating mechanism to drive the battery cell to rotate and drive the battery cell to continuously change the moving direction on the horizontal plane; so that during the rotation of the battery cell, the glue pressing roller always presses the part of the tape that is about to be wound onto the battery cell, so as to synchronously press it, so that the battery cell and the tape are combined more tightly.

Description

Technical Field

[0001] The present invention relates to the field of battery production, and in particular to a square battery cell gluing device, system and method. Background Art

[0002] The battery cell is the core component of a lithium-ion battery, and the last process of manufacturing the battery cell is gluing. The purpose of gluing is to facilitate subsequent processes such as inserting the battery cell into the shell. As customers' requirements for product process level, production efficiency and quality are getting higher and higher, traditional manual gluing can no longer meet the requirements of modern production, and a gluing machine that can achieve automatic gluing has emerged.

[0003] Currently, the gluing method for this process of square battery cells is to stick multiple U-shaped adhesives or a whole circle of tape along the winding direction (i.e., the width direction of the battery cell). However, the device for sticking a whole circle of tape on the current battery cell has a complex structure, and there are problems such as the tape not being stuck tightly enough or even falling off. Summary of the Invention

[0004] To overcome the deficiencies in the prior art, the present application provides a square battery cell gluing device, including:

[0005] A clamping and rotating mechanism for clamping the battery cell and driving the battery cell to rotate around its own height direction, so that the tape adhered to the surface of the battery cell is wound around the battery cell;

[0006] A servo mechanism, the clamping and rotating mechanism is movably connected to the servo mechanism, and the servo mechanism is used to drive the clamping and rotating mechanism to move horizontally;

[0007] A pressure-applying mechanism, the pressure-applying mechanism includes a pressure-applying roller;

[0008] The servo mechanism cooperates with the clamping and rotating mechanism to drive the battery cell to rotate and at the same time drive the battery cell to continuously change the moving direction on the horizontal plane; so that during the rotation of the battery cell, the pressure-applying roller always presses the part of the tape that is about to be wound onto the battery cell, so as to press it tightly synchronously.

[0009] In a possible implementation manner, the square battery cell gluing device further includes:

[0010] A tape-pulling mechanism, including a tape-pulling jaw; the tape-pulling jaw is used to clamp the free end of the tape;

[0011] A tape-sucking mechanism, including a tape-sucking plate; after the tape-pulling jaw clamps the tape, the tape-sucking plate adsorbs the initial section of the tape.

[0012] In a possible implementation, a groove adapted to the shape of the glue pulling jaw is provided on the glue sucking plate; the glue sucking plate is pulled by a glue sucking plate driving member to approach the glue pulling jaw, so that the glue pulling jaw is embedded in the groove, so that the head end of the initial section of the tape is completely attached to the glue sucking plate.

[0013] In a possible implementation, the square battery cell encapsulation device further includes a tape positioning jaw and a glue pulling mechanism;

[0014] The tape positioning jaw is used to clamp the tape to position the head end of the initial section of the tape;

[0015] The glue pulling mechanism includes a glue pulling jaw and a glue pulling driving member; the glue pulling jaw is used to clamp the free end of the tape after the head end of the initial section of the tape is positioned; the glue pulling driving member is used to pull the glue pulling jaw to move.

[0016] In a possible implementation, the battery cell encapsulation device further includes a glue sucking mechanism, and the glue sucking mechanism includes:

[0017] A glue sucking plate driving member, which is used to drive the glue sucking plate to approach or away from the initial section of the tape.

[0018] A glue sucking plate, which is provided with through holes, and the glue sucking plate is used to adsorb the initial section of the tape through the negative pressure at the through holes.

[0019] A battery cell encapsulation system provided by the present application includes at least two of the above-mentioned battery cell encapsulation devices, and the two battery cell encapsulation devices are an independently arranged battery cell middle encapsulation device and a battery cell bottom encapsulation device;

[0020] The battery cell middle encapsulation device is used to perform encapsulation around the middle position in the height direction of the battery cell;

[0021] The battery cell bottom encapsulation device is used to perform encapsulation around the bottom of the battery cell.

[0022] The present application also provides a battery cell encapsulation method, which uses the above-mentioned square battery cell encapsulation device for encapsulation, and includes the following steps:

[0023] The servo mechanism drives the battery cell to move, so that the surface of the battery cell is attached to the head end of the initial section of the tape;

[0024] The clamping and rotating mechanism drives the battery cell to rotate around its own height direction; during the rotation of the battery cell, the servo mechanism simultaneously drives the battery cell to move horizontally, and presses the tape on the surface of the battery cell through the pressure roller.

[0025] In a possible implementation manner, before the first end of the initial section of the tape is attached to the surface of the battery cell, the following steps are also included:

[0026] The glue absorbing plate driving member drives the glue absorbing plate at the initial position to move in a direction close to the initial section of the adhesive tape until the glue pulling claw is embedded in the groove on the glue absorbing plate, and negative pressure is turned on to make the head end of the initial section of the adhesive tape adhere to the glue absorbing plate;

[0027] The servo mechanism drives the battery core to move, so that the battery core abuts against the adhesive absorbing plate, and the initial section of the adhesive tape adheres to the surface of the battery core.

[0028] In a possible implementation manner, before the step of attaching the first end of the initial section of the adhesive tape to the adhesive absorbing board, the following steps are also included:

[0029] After the leading end of the initial section of adhesive tape is positioned by the adhesive tape positioning clamp, the adhesive pulling driving component pulls the adhesive pulling clamp in the initial position to move in the direction close to the adhesive tape clamp, and the adhesive pulling clamp clamps the leading end of the initial section of adhesive tape, and the adhesive pulling driving component pulls the adhesive pulling clamp to pull the initial section of adhesive tape back to the initial position of the adhesive pulling clamp.

[0030] In a possible implementation, the following steps are also included:

[0031] After releasing and winding the adhesive tape of a preset length, cutting the adhesive tape by a tape cutting mechanism;

[0032] The clamping rotating mechanism and the servo mechanism continue to move, cooperating with the adhesive pressing roller, so that the tail end of the adhesive tape is attached to the surface of the battery core.

[0033] Compared with the prior art, the beneficial effects of this application are as follows: This device realizes the automation of the battery core encapsulation process through the cooperation of the clamping rotation mechanism, the servo mechanism and the glue pressing mechanism, which significantly improves the work efficiency. By setting up a glue pressing roller, the adhesive tape can be better fitted to the battery core; in particular, by setting up a servo mechanism, the glue pressing roller can always press the part of the tape that is about to be wound onto the battery core during the rotation of the battery core, so as to press it synchronously, so that the battery core and the adhesive tape can be more tightly combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 Shows the structural schematic diagram of the square battery cell encapsulation device;

[0036] Figure 2 Shows the partial enlarged view of the clamping and rotating mechanism;

[0037] Figure 3 And Figure 4 Shows the structural schematic diagram of the cooperation between the servo mechanism and the clamping and rotating mechanism;

[0038] Figure 5 Shows Figure 1 The partial enlarged view at A in;

[0039] Figure 6 Shows the schematic diagram of the glue pulling jaw embedded in the groove on the glue sucking plate;

[0040] Figure 7 Shows the schematic diagram of the motion state when the tape on the glue pulling jaw is attached to the glue sucking plate;

[0041] Figure 8 Shows the structural schematic diagram of the glue pulling mechanism;

[0042] Figure 9 Shows the structural schematic diagram of the glue sucking mechanism and the glue pressing roller;

[0043] Figure 10 Shows the structural schematic diagram of the glue cutting mechanism and the tension adjusting mechanism;

[0044] Figure 11 Shows the top view schematic diagram of the motion states of the glue pressing roller, the tape and the battery cell when the battery cell is wound with the tape;

[0045] Figure 12 Shows the structural schematic diagram of the square battery cell encapsulation device in Embodiment 4;

[0046] Figure 13 Shows the structural schematic diagram of the loading mechanism in the square battery cell encapsulation device;

[0047] Figure 14 Shows the structural schematic diagram of the servo mechanism in the square battery cell encapsulation device;

[0048] Figure 15a 、 Figure 15b Shows the schematic diagram of the glue pressing mechanism, where Figure 15a It does not have a glue pressing roller;

[0049] Figure 15c Gives the cross-sectional view of the glue pressing mechanism.

[0050] Main component symbol description:

[0051] 10 - Glue discharging table; 20 - Glue pulling mechanism; 21 - Glue pulling jaws; 22 - Glue pulling servo motor; 30 - Glue sucking mechanism; 31 - Servo electric sliding table; 32 - Glue sucking plate; 33 - Glue sucking sliding table; 34 - Groove; 35 - Through hole; 40 - Clamping and rotating mechanism; 41 - Clamping and rotating motor; 42 - Cell clamping jaws; 43 - Moving frame; 50 - Glue pressing mechanism; 51 - Glue pressing roller; 52 - Roller shaft; 53 - Roller seat; 54 - Spring; 60 - Servo mechanism; 61 - X-axis sliding table; 62 - Y-axis sliding table; 63 - Mounting frame; 70 - Z-axis servo cylinder; 80 - Tape positioning jaws; 90 - Loading mechanism; 91 - Loading servo motor; 92 - Loading frame; 93 - Loading cell clamping jaws; 100 - Glue cutting mechanism; 101 - Cutter; 102 - Cutter cylinder; 110 - Tension adjusting mechanism; 111 - Tension adjusting roller; 112 - Counterweight; 120 - Tape; 130 - Cell; 140 - Guide rail slider mechanism. Detailed implementation manners

[0052] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are 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 thus should not be construed as a limitation to the present invention.

[0054] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0055] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0057] Embodiment 1

[0058] A square battery cell encapsulation device, please refer to Figure 1 and Figure 5 , including a clamping and rotating mechanism 40, a servo mechanism 60 and a glue pressing mechanism 50.

[0059] The clamping and rotating mechanism 40 is used to clamp the battery cell 130 and drive the battery cell 130 to rotate around its own height direction, so that the tape 120 adhered to the surface of the battery cell 130 is wound around the battery cell 130. Specifically, the clamping and rotating mechanism 40 can be a combination of a jaw and a jaw mounting seat for mounting the jaw. The jaw can be an electric jaw or a pneumatic jaw, as long as it can achieve the function of clamping the battery cell 130, and no specific limitation is made.

[0060] The servo mechanism 60, the clamping and rotating mechanism 40 is movably connected to the servo mechanism 60, and the servo mechanism 60 is used to drive the clamping and rotating mechanism 40 to move horizontally. Specifically, the servo mechanism 60 can be composed of a servo motor or a servo cylinder, as long as it can drive the clamping and rotating mechanism 40 connected thereto to move. For example, the servo mechanism 60 is composed of two servo cylinders, the second servo cylinder is fixedly connected to the telescopic rod of the first servo cylinder, and the moving directions of the two servo cylinders are perpendicular to each other, so as to drive the clamping and rotating mechanism 40 to move horizontally.

[0061] The glue pressing mechanism 50, the glue pressing mechanism 50 includes a glue pressing roller 51 and a roller seat for installing the glue pressing roller 51. The purpose of setting the glue pressing mechanism 50 is to make the tape 120 better adhere to the battery cell 130.

[0062] Please refer to Figure 5 、 Figure 15a 、 Figure 15b and Figure 15c , the glue pressing mechanism 50 includes a glue pressing roller 51, a roller shaft 52 and a roller seat 53. The glue pressing roller 51 is sleeved on the roller shaft 52. Springs 54 are also clamped in the slots at both ends of the roller seat 53. Both ends of the roller shaft 52 are inserted into the slots at both ends of the roller seat 53 and are in flexible contact with the springs 54; it should be noted that as long as both ends of the glue pressing roller 51 overcome the elastic force of the springs 54 in the slots, they can move along the length direction of the slots. Therefore, during the encapsulation process, the glue pressing roller 51 will continuously change its own position under the action of the battery cell 130, so the rotation center of the glue pressing roller 51 is also dynamically changing.

[0063] The servo mechanism 60 cooperates with the clamping and rotating mechanism 40, please refer to Figure 11 , drives the battery cell 130 to rotate and at the same time drives the battery cell 130 to continuously change the moving direction on the horizontal plane; so that during the rotation of the battery cell 130, the glue pressing roller 51 always presses the part of the tape 120 that is about to be wound onto the battery cell 130, so as to press it synchronously.

[0064] Through the cooperation of the clamping and rotating mechanism 40, the servo mechanism 60 and the glue pressing mechanism 50, the automation of the battery cell encapsulation process is realized, and the working efficiency is significantly improved. By setting the glue pressing roller 51, the tape 120 adheres better to the battery cell 130; especially by setting the servo mechanism 60, during the rotation of the battery cell 130, the glue pressing roller 51 always presses the part of the tape 120 that is about to be wound onto the battery cell 130, so that the battery cell 130 and the tape 120 are combined more tightly.

[0065] In some embodiments, the square battery cell encapsulation device further includes a tape pulling mechanism 20 and a glue sucking mechanism 30.

[0066] Please refer to again Figure 5 、 Figure 8 and Figure 9. Among them, the glue pulling mechanism 20 includes a glue pulling clamp 21 and a glue pulling driving member. In this embodiment, the glue pulling driving member is a glue pulling servo motor 22; the glue suction mechanism 30 includes a glue suction plate 32 and a glue suction plate driving member. In this embodiment, the glue suction plate driving member is a servo electric slide 31. The glue pulling clamp 21 can be an electric clamp or a pneumatic clamp. In other embodiments, the glue pulling driving member can be an electric telescopic rod or a cylinder. The glue suction plate driving member can be a mechanical arm, a cylinder or a hydraulic cylinder, as long as it can drive the glue suction plate 32 to move, and is not specifically limited here.

[0067] Please refer to Figure 8 The adhesive pulling mechanism 20 includes an adhesive pulling jaw 21 and an adhesive pulling servo motor 22 for driving the adhesive pulling jaw 21 to move. The adhesive pulling jaw 21 is connected to the moving part of the adhesive pulling servo motor 22 by transmission. The adhesive pulling servo motor 22 is a linear servo motor of a linear drive type. The adhesive pulling jaw 21 is used to clamp the free end of the adhesive tape 120, and the adhesive pulling servo motor 22 is used to pull the adhesive pulling jaw 21 to move, so as to pull out the initial section of the adhesive tape.

[0068] Please refer to Figure 6 and Figure 7 , Figure 6 Schematic diagram of the glue pulling jaw 21 being embedded in the groove 34 on the glue suction plate 32 (at this time, there is no clamping tape 120 on the glue pulling jaw 21). Figure 7 It is a schematic diagram of the movement state when the adhesive tape 120 on the adhesive pulling clamp 21 is attached to the adhesive suction plate 32 .

[0069] Continue to refer Figure 6 and Figure 7 In this embodiment, a groove 34 is provided on the glue suction plate 32, which is adapted to the shape of the glue pulling jaw 21; when the glue pulling jaw 21 has clamped the initial section of the adhesive tape, the glue suction plate 32 is pulled close to the glue pulling jaw 21 by the glue suction plate driving member, so that the glue pulling jaw 21 is embedded in the groove, and the negative pressure of the glue suction plate 32 is turned on, so that the initial section of the adhesive tape is completely attached to the glue suction plate; thereby, the initial section of the adhesive tape 120, including the head end of the initial section of the adhesive tape, is completely attached to the glue suction plate 32, so as to avoid the head end of the initial section of the adhesive tape extending outward relative to the glue suction plate 32, resulting in the problem of the head end of the initial section of the adhesive tape warping, self-adhesion or uneven pasting.

[0070] First, the glue-pulling jaw 21 approaches the adhesive tape 120 under the drive of the glue-pulling servo motor 22. After the fingers of the glue-pulling jaw 21 clamp the head end of the adhesive tape 120, the glue-pulling servo motor 22 continues to move a distance to pull out a section of the adhesive tape 120. The glue-absorbing plate 32 approaches the glue-pulling jaw 21 under the drive of the servo electric slide 31, so that the fingers of the glue-pulling jaw 21 are embedded in the groove 34, so that the head end of the initial section of the adhesive tape is completely attached to the glue-absorbing plate 32. The matching design between the glue-pulling jaw 21 and the glue-absorbing plate 32 prevents the initial end of the adhesive tape 120 from escaping outward relative to the glue-absorbing plate 32, thereby causing the extended adhesive tape 120 to fail to be evenly attached to the surface of the battery cell 130.

[0071] It should be noted that in this embodiment, the glue pulling jaw 21 moves toward the glue sucking plate 32. However, in some other possible embodiments, the glue sucking plate 32 moves toward the glue pulling jaw 21. In some other possible embodiments, the glue sucking plate 32 and the glue pulling jaw 21 move toward each other driven by their respective driving members.

[0072] Please refer again Figure 5 The square battery core encapsulation device further includes a tape positioning clamp 80; the tape positioning clamp 80 is used to clamp the tape 120 to position the head end of the initial section of the tape.

[0073] Please refer to Figure 8 The glue pulling mechanism 20 includes a glue pulling jaw 21 and a glue pulling servo motor 22 for driving the glue pulling jaw 21 to move. The glue pulling jaw 21 is connected to the moving part of the glue pulling servo motor 22 through a connecting plate. The glue pulling jaw 21 clamps the free end of the adhesive tape 120. The glue pulling servo motor 22 is a linear servo motor of a linear drive type. After the head end of the initial section of the adhesive tape is positioned by the adhesive tape positioning jaw 80, the glue pulling jaw 21 clamps the free end of the adhesive tape 120, and the glue pulling servo motor 22 pulls the glue pulling jaw 21 to move.

[0074] The glue pulling servo motor 22 drives the glue pulling jaw 21 to move in a straight line to two positions. The first position is where the tape roll is located, and the glue pulling jaw 21 clamps the free end of the tape 120 here (the free end here is not necessarily the head end of the tape 120, but can also be a position after the head end of the tape 120). Then the glue pulling servo motor 22 drives the glue pulling jaw 21 to move in a straight line to the second position, and the second position is the position where the tape 120 on the glue pulling jaw 21 is attached to the glue suction plate 32. Since there is a distance between the first position and the second position, the tape 120 on the tape roll is pulled out, and the tape roll releases a section of the tape 120 in this process.

[0075] Please refer to Figure 6 , Figure 7 andFigure 9 After the glue suction plate 32 adsorbs the initial section of the tape after the glue pulling jaw 21 clamps the tape 120.

[0076] Please refer to Figure 9 As shown in the figure, the glue suction mechanism 30 includes a servo electric slide table 31, a glue suction plate 32, and a T-shaped glue suction slide table 33 connecting the two. One end of the glue suction slide table 33 is connected to the glue suction plate 32, and the other end is connected to the slide table part in the servo electric slide table 31.

[0077] The servo electric slide table 31 drives the glue suction slide table 33 to move through the forward and reverse rotation of its motor, thereby driving the glue suction plate 32 to reciprocate linearly. The servo electric slide table 31 will drive the glue suction plate 32 to move to two positions. The first position is the initial position of the glue suction plate 32, and the second position is the position where the tape 120 on the glue suction plate 32 is attached to the surface of the battery cell 130.

[0078] Please refer to Figure 6 As shown in the figure, the glue suction plate 32 is provided with through holes 35, and the glue suction plate 32 is used to adsorb the initial section of the tape through the negative pressure at the through holes 35. A cavity is provided inside the glue suction plate 32. This cavity is communicated with an external vacuum pumping device through a vacuum pipeline, and a negative pressure is formed in the cavity after vacuum pumping, thereby driving the tape 120 to be adsorbed on the surface of the glue suction plate 32.

[0079] In addition, a guide rail slider mechanism 140 is further provided on the glue suction slide table 33. The slider part in the guide rail slider mechanism 140 is fixedly connected to the pressure roller 51 through a connecting plate with a rectangular cross-section. When the battery cell 130 needs to wind the tape 120, the guide rail slider mechanism 140 drives the pressure roller 51 to move to a position where it abuts against the battery cell 130; when the glue wrapping is completed, the slider drives the pressure roller 51 back to its original position.

[0080] After the glue suction plate 32 adsorbs the tape 120, the initial section of the tape is attached to the surface of the battery cell 130 by driving the battery cell 130 to the position of the glue suction plate 32. In some embodiments, a cylindrical glue suction roller can also be used instead of the glue suction plate 32. In this embodiment, it is preferably a glue suction plate 32 with good flatness and a rectangular cross-section to adsorb the tape 120. This is because the battery cell 130 is also roughly plate-shaped, and such a design can have a larger contact area when the glue suction plate 32 is attached to the battery cell 130, so that the tape 120 is more stably attached to the battery cell 130 and the tape 120 is prevented from falling off.

[0081] As Figure 10 shown, the square battery cell glue wrapping device further includes a glue placing table 10 for placing the tape roll, and a glue cutting mechanism 100 and a tension adjusting mechanism 110 are provided on the glue placing table 10.

[0082] The rubber cutting mechanism 100 is used to cut the tape 120. The rubber cutting mechanism 100 includes a cutting knife 101 and a cutting knife cylinder 102 for driving the movement of the cutting knife 101. Among them, the serrated edge of the cutting knife 101 faces the released tape 120; the cylinder rod of the cutting knife cylinder 102 is fixedly connected to the cutting knife 101 to drive the cutting knife 101 to move towards the tape 120 and cut the tape 120.

[0083] The tension adjusting mechanism 110 is used to tension the tape 120. The tension adjusting mechanism 110 includes a plurality of tension adjusting rollers 111 vertically arranged on the tabletop of the tape releasing table 10. The tension adjusting rollers 111 are divided into fixed rollers and tensioning rollers. The fixed rollers are fixed on the tabletop, and the lower end of the tensioning roller is slidably connected to the guide rail on the tabletop, so that the tensioning roller can slide along the guide rail on the tabletop; and a counterweight 112 for restricting the movement of the tensioning roller is connected below the tensioning roller.

[0084] The tape 120 bypasses the fixed roller and the tensioning roller, so that the tape 120 exits the glue in a meandering extension manner. By adjusting the position of the tensioning roller on the guide rail, the tension of the tape 120 can be adjusted.

[0085] Embodiment 1

[0086] The second embodiment provides a square battery cell encapsulation device for encapsulating the middle part of the battery cell 130. The second embodiment is a further improvement based on the first embodiment. The differences between the second embodiment and the first embodiment are as follows:

[0087] Please refer to Figure 2 , Figure 2 which gives a partial enlarged view of the clamping and rotating mechanism 40 in this embodiment. The clamping and rotating mechanism 40 includes a clamping and rotating motor 41 for providing a rotating driving force for the rotation of the battery cell 130 and a battery cell clamping jaw 42 driven by the clamping and rotating motor 41.

[0088] The clamping and rotating motor 41 is installed on a movable moving frame 43. The moving frame 43 is composed of two symmetrically installed support plates and multiple connecting columns connecting the two support plates. A coupling is also arranged between the two connecting plates.

[0089] Among them, the clamping and rotating motor 41 is installed on the upper support plate, and its rotor part passes through the upper support plate and is connected to the upper end of the coupling. The battery cell clamping jaw 42 is arranged below the moving frame 43, and the finger part of the battery cell clamping jaw 42 faces downward. A bearing is installed on the lower support plate, and the lower end of the coupling passes through the coupling and is connected to the end of the battery cell clamping jaw 42.

[0090] The finger part of the cell gripper 42 closes to grip the upper end of the cell 130. The clamping and rotating motor 41 starts, drives the entire lower cell gripper 42 to rotate through the coupling, and then drives the cell 130 to rotate.

[0091] Please refer to Figure 3 and Figure 4 , Figure 3 and Figure 4 Fig. shows a schematic structural diagram of the cooperation between the servo mechanism 60 and the clamping and rotating mechanism 40. The clamping and rotating mechanism 40 is movably connected to the servo mechanism 60, and the servo mechanism 60 is used to drive the clamping and rotating mechanism 40 to move horizontally.

[0092] The servo mechanism 60 includes an X-axis slide 61 and a Y-axis slide 62. The X-axis slide 61 drives the clamping and rotating mechanism 40 to move back and forth, and the Y-axis slide 62 drives the clamping and rotating mechanism 40 to move left and right.

[0093] In this embodiment, the X-axis slide 61 is installed on the mounting frame 63. The slide part of the X-axis slide 61 drives the entire Y-axis slide 62 to move through a connecting plate. The slide part of the Y-axis slide 62 drives the entire Z-axis servo cylinder 70 to move. The lower end of the telescopic rod of the Z-axis servo cylinder 70 is fixedly connected to the upper end of the moving frame 43.

[0094] The Z-axis servo cylinder 70 is used to adjust the height when the cell 130 is coated with glue. However, when the cell 130 is winding the tape 120, the telescopic rod of the Z-axis servo cylinder 70 remains stationary to avoid changing the height position of the cell 130 and ensure that the tape 120 winds around the cell 130 in a manner perpendicular to the height direction of the cell 130.

[0095] In this embodiment, when the cell 130 is gripped by the cell gripper 42, the cell 130 is placed vertically and the upper end of the cell 130 is gripped by the cell gripper 42. The clamping and rotating motor 41 starts to drive the cell 130 to rotate. The X-axis slide 61 and the Y-axis slide 62 cooperate to move, so that the cell 130 rotates and moves back and forth and left and right continuously on the horizontal plane.

[0096] Embodiment Three

[0097] In some implementation scenarios, the working process of the square cell coating device is as follows:

[0098] 1. The tape roll is in the glue tray on the glue release table 10. The tape positioning gripper 80 clamps the initial end of the tape 120. The tape pulling gripper 21 approaches the tape roll and clamps the free end of the tape 120 under the drive of the tape pulling servo motor 22. The tape positioning gripper 80 releases. The tape pulling gripper 21 pulls the tape 120 to release the first section of the tape from the tape roll. At this time, the tape positioning gripper 80 can clamp the tape 120 again for the subsequent suction plate 32 to adsorb the tape 120, or it can be released.

[0099] 2. The glue suction plate 32 moves forward driven by the servo electric sliding table 31 until the glue pulling jaw 21 is engaged in the groove 34 on the glue suction plate 32; the vacuum pumping device is turned on, and a negative pressure is generated at the through hole 35 of the glue suction plate 32 to suck the leading end of the tape 120, and the glue pulling jaw 21 releases the tape 120.

[0100] 3. The cell jaw 42 on the clamping and rotating mechanism 40 clamps the cell 130. At this time, the cell 130 is clamped by the cell jaw 42 in a vertical state, and the height direction of the cell 130 is perpendicular to the horizontal plane; the servo mechanism 60 drives the whole clamping and rotating mechanism 40 to move, so as to drive the cell 130 to move and make it abut against the glue suction plate 32. At this time, the surface of the cell 130 is attached to the plate surface of the glue suction plate 32; the initial section of the tape 120 is pasted on the surface where the cell 130 and the glue suction plate 32 are attached; then the vacuum pumping device stops pumping, and the glue suction plate 32 returns to the initial position to leave space for the rotation of the cell 130.

[0101] 4. The clamping and rotating mechanism 40 drives the cell 130 to rotate around its own height direction, and the servo mechanism 60 drives the cell 130 to move horizontally; as Figure 11 shown, Figure 11 The top view schematic diagram of the motion states of the pressure roller 51, the tape 120 and the cell 130 when the cell 130 winds the tape 120 is given. It can be seen from the figure that during the process of winding the tape 120, the position of the pressure roller 51 remains unchanged, and the tape-out direction of the tape 120 also remains unchanged. While the cell 130 is driven by the clamping and rotating mechanism 40 and the servo mechanism 60, it rotates and continuously changes its own position.

[0102] Since the cell 130 rotates vertically while continuously changing its moving direction on the horizontal plane, the pressure roller 51 always presses the part of the tape 120 that is about to be wound onto the cell 130 during the rotation of the cell 130, so as to press it synchronously.

[0103] After the cell 130 winds the tape 120 with a preset length, the tape positioning jaw 80 clamps the tape 120 to cooperate with the tape cutting mechanism 100 to cut the tape 120; wherein, the cutter 101 in the tape cutting mechanism 100 moves towards the tape 120 to cut the tape 120 to form the end glue of the tape 120, and the clamping and rotating mechanism 40 and the servo mechanism 60 continue to move, and cooperate with the pressure roller 51 to make the end of the tape 120 fit on the surface of the cell 130.

[0104] Example 4

[0105] Embodiment 4 provides a square battery cell encapsulation device for encapsulating the bottom of the battery cell 130. The bottom of the battery cell 130 refers to the end opposite to the cover plate of the battery cell 130 after two pole combination cells are combined. Embodiment 4 is an equivalent replacement made on the basis of Embodiment 2. The differences between Embodiment 4 and Embodiment 2 are as follows:

[0106] Please refer to Figures 12 - 14 , in this embodiment, the battery cell encapsulation device is provided with a feeding mechanism 90 and a servo mechanism 60 formed by the cross combination of an X-axis slide 61 and a Y-axis slide 62.

[0107] The feeding mechanism 90 includes a feeding frame 92. A feeding servo motor 91 for controlling the feeding of the battery cell 130 is provided on the feeding frame 92. A feeding battery cell gripper 93 is installed at the moving end of one of the feeding servo motors 91. The feeding mechanism 90 in this embodiment only undertakes the action of taking the material in place and does not undertake the translation action of the battery cell 130 during the encapsulation of the battery cell 130. The translation action during the encapsulation of the battery cell 130 is completed by the servo mechanism 60.

[0108] The servo mechanism 60 includes an X-axis slide 61 and a Y-axis slide 62 arranged crosswise. The slide part of the X-axis slide 61 drives the whole Y-axis slide 62 to move through a connecting plate. A moving frame 43 is installed on the slide part of the Y-axis slide 62. A battery cell gripper 42 driven by a clamping and rotating motor 41 is installed on the moving frame 43.

[0109] The feeding battery cell gripper 93 clamps the battery cell 130. Before the battery cell 130 is wound with tape, the feeding servo motor 91 pulls the feeding battery cell gripper 93 to move above the servo mechanism 60. The battery cell gripper 42 above the servo mechanism 60 clamps the battery cell 130. The feeding battery cell gripper 93 releases and moves away under the drive of the feeding servo motor 91.

[0110] Embodiment 5

[0111] This embodiment provides a battery cell encapsulation system for encapsulating the middle position in the height direction and the bottom of the battery cell 130 respectively. The bottom of the battery cell 130 refers to the end opposite to the cover plate of the battery cell 130 after two pole combination cells are combined.

[0112] The battery cell encapsulation system includes an independently arranged battery cell middle encapsulation device and a battery cell bottom encapsulation device. The battery cell middle encapsulation device is the battery cell encapsulation device described in one of Embodiment 2 or Embodiment 4; similarly, the battery cell bottom encapsulation device can also be the battery cell encapsulation device described in one of Embodiment 2 or Embodiment 4.

[0113] The battery cell middle encapsulation device is used for encapsulating around the middle position, the upper middle position or the lower middle position in the height direction of the battery cell 130;

[0114] The bottom encapsulation device of the battery cell is used to perform encapsulation around the bottom of the battery cell 130.

[0115] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0116] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A square battery cell encapsulation device, characterized in that, it includes: a clamping and rotating mechanism for clamping the battery cell and driving the battery cell to rotate around its own height direction, so that the tape adhered to the surface of the battery cell is wound around the battery cell; a servo mechanism, the clamping and rotating mechanism is movably connected to the servo mechanism, and the servo mechanism is used to drive the clamping and rotating mechanism to move horizontally; a glue pressing mechanism, the glue pressing mechanism includes a glue pressing roller; The servo mechanism cooperates with the clamping and rotating mechanism to drive the battery cell to rotate and at the same time drive the battery cell to continuously change the moving direction on the horizontal plane; so that during the rotation of the battery cell, the glue pressing roller always presses the part of the tape that is about to be wound onto the battery cell, so as to press it synchronously.

2. The square battery cell encapsulation device according to claim 1, characterized in that, the square battery cell encapsulation device further includes: a tape pulling mechanism including a tape pulling jaw; the tape pulling jaw is used to clamp the free end of the tape; a glue sucking mechanism including a glue sucking plate; after the tape pulling jaw clamps the tape, the glue sucking plate adsorbs the initial section of the tape.

3. The square battery cell encapsulation device according to claim 2, characterized in that, the glue sucking plate is provided with a groove adapted to the shape of the tape pulling jaw; the glue sucking plate is pulled by a glue sucking plate driving member to approach the tape pulling jaw, so that the tape pulling jaw is embedded in the groove, so that the head end of the initial section of the tape is completely attached to the glue sucking plate.

4. The square battery cell encapsulation device according to claim 1, characterized in that, the square battery cell encapsulation device further includes a tape positioning jaw and a tape pulling mechanism; the tape positioning jaw is used to clamp the tape to position the head end of the initial section of the tape; the tape pulling mechanism includes a tape pulling jaw and a tape pulling driving member; the tape pulling jaw is used to clamp the free end of the tape after the head end of the initial section of the tape is positioned; the tape pulling driving member is used to pull the tape pulling jaw to move.

5. The battery cell encapsulation device according to claim 1, characterized in that, the battery cell encapsulation device further includes a glue sucking mechanism, and the glue sucking mechanism includes: a glue sucking plate driving member for driving the glue sucking plate to approach or away from the initial section of the tape; a glue sucking plate, the glue sucking plate is provided with through holes, and the glue sucking plate is used to adsorb the initial section of the tape through the negative pressure at the through holes.

6. A battery cell encapsulation system, characterized in that, it includes at least two battery cell encapsulation devices according to any one of claims 1-5, and the two battery cell encapsulation devices are an independently arranged battery cell middle encapsulation device and a battery cell bottom encapsulation device; the battery cell middle encapsulation device is used for encapsulating around the middle position in the height direction of the battery cell; the battery cell bottom encapsulation device is used for encapsulating around the bottom of the battery cell.

7. A battery cell encapsulation method, characterized in that, using the square battery cell encapsulation device according to any one of claims 1-5 for encapsulation, including the following steps: the servo mechanism drives the battery cell to move, so that the surface of the battery cell fits the head end of the initial section of the tape; The clamping rotation mechanism drives the battery core to rotate around its own height direction; during the rotation of the battery core, the servo mechanism simultaneously drives the battery core to move horizontally, and the adhesive tape is pressed against the surface of the battery core through the adhesive pressing roller.

8. A method for encapsulating a battery core according to claim 7, It is characterized in that Before the first end of the initial section of the tape is attached to the surface of the battery cell, the following steps are also included: The glue absorbing plate driving member drives the glue absorbing plate at the initial position to move in a direction close to the initial section of the adhesive tape until the glue pulling claw is embedded in the groove on the glue absorbing plate, and negative pressure is turned on to make the head end of the initial section of the adhesive tape adhere to the glue absorbing plate; The servo mechanism drives the battery core to move, so that the battery core abuts against the adhesive absorbing plate, and the initial section of the adhesive tape adheres to the surface of the battery core.

9. A method for encapsulating a battery core according to claim 8, It is characterized in that Before the step of attaching the first end of the initial section of adhesive tape to the adhesive suction board, the following steps are also included: After the leading end of the initial section of adhesive tape is positioned by the adhesive tape positioning clamp, the adhesive pulling driving component pulls the adhesive pulling clamp in the initial position to move in the direction close to the adhesive tape clamp, and the adhesive pulling clamp clamps the leading end of the initial section of adhesive tape, and the adhesive pulling driving component pulls the adhesive pulling clamp to pull the initial section of adhesive tape back to the initial position of the adhesive pulling clamp.

10. A method for encapsulating a battery core according to claim 7, It is characterized in that The following steps are also included: After releasing and winding the adhesive tape of a preset length, cutting the adhesive tape by a tape cutting mechanism; The clamping rotating mechanism and the servo mechanism continue to move, cooperating with the adhesive pressing roller, so that the tail end of the adhesive tape is attached to the surface of the battery core.

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