Material belt welding device, capacitor production equipment and battery production equipment

Abstract

The utility model discloses a material belt welding device, capacitor production equipment and battery production equipment, the material belt welding device comprises a rotating tower, the rotating tower is provided with a winding needle, the winding needle can rotate around the axis of the winding needle to wind a material belt, and the rotating tower can rotate to enable the winding needle to be located at a winding station or a discharging station; the welding mechanism is used for welding the starting ends of the multiple layers of material belts on the winding needle located on the winding station. According to the invention, dislocation core pulling and wrinkling of a plurality of layers of material belts in the blanking process of capacitor cores or battery cores can be avoided, and the production quality of capacitors or batteries is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery or capacitor production, in particular to a material belt welding device, a capacitor production equipment and a battery production equipment. BACKGROUND

[0002] In the existing capacitor or battery winding process, the starting ends of the multi-layer material belts (such as the separator of the capacitor core or the separator of the battery core) are simply stacked together, and then the winding needle is wound. After winding is completed, when the material is discharged, the misalignment of the multi-layer material belts and the wrinkling and disordered stacking of the core often affect the production quality. CONTENT OF THE UTILITY MODEL

[0003] An object of the present application is to provide a new technical solution of a material belt welding device, a capacitor production equipment and a battery production equipment.

[0004] To achieve the above object, according to a first aspect of the present application, a material belt welding device is provided, comprising: a turret, the turret is installed with a winding needle, the winding needle can rotate around its own axis to wind the material belt, the turret can rotate to make the winding needle be in a winding station or a discharging station; a welding mechanism, the welding mechanism is used for welding the starting ends of the multi-layer material belts on the winding needle in the winding station.

[0005] Optionally, the welding mechanism comprises: a mounting seat; a driving member installed on the mounting seat; a welding head, the driving member is used for driving the welding head to move along the axis direction of the winding needle.

[0006] Optionally, the welding mechanism further comprises: a moving block, the moving block is in sliding cooperation with the mounting seat, the welding head is installed on the moving block; the driving member drives the moving block to slide relative to the mounting seat to make the welding head move along the axis direction of the winding needle.

[0007] Optionally, the welding head moves along the axis direction of the winding needle to perform multi-point welding on the starting ends of the multi-layer material belts.

[0008] Optionally, after the winding needle in the winding station winds the material belt for at least 1 / 2 turns, the welding mechanism welds the starting ends of the multi-layer material belts.

[0009] Optionally, the welding mechanism is a laser welding mechanism.

[0010] Optionally, the welding mechanism welds the starting ends of the multi-layer material belts in the rotating process of the winding needle in the winding station.

[0011] Optionally, the material belt welding device further comprises a cutter, which is arranged between the winding station and the discharging station; the welding mechanism welds the starting end of the multi-layer material belt on the winding needle in the winding station after the cutter cuts the multi-layer material belt.

[0012] According to a second aspect of the present application, a capacitor production device is provided, comprising the material belt welding device according to any one of the preceding aspects.

[0013] According to a third aspect of the present application, a battery production device is provided, comprising the material belt welding device according to any one of the preceding aspects.

[0014] The material belt welding device in the embodiments of the present application can weld the starting end of the multi-layer material belt on the winding needle in the winding station, so that the innermost multi-layer material belt of the battery cell or the capacitor core does not dislocate and wrinkle during the process from the winding needle to the discharging station, thereby improving the production quality.

[0015] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the following drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0017] Figure 1 is a schematic diagram of the winding process of a capacitor core in the embodiments of the present application, at this time, one capacitor core has been wound to the discharging station.

[0018] Figure 2 is a schematic diagram of the winding process of a capacitor core in the embodiments of the present application, at this time, the cutter has cut the material belt.

[0019] Figure 3 is a schematic diagram of the winding process of a capacitor core in the embodiments of the present application, at this time, the welding mechanism welds the starting end of the multi-layer material belt on the winding needle in the winding station.

[0020] Figure 4 is a schematic diagram of the structure of the welding mechanism in the embodiments of the present application.

[0021] Figure 5 is a schematic diagram of the structure of the starting end of the multi-layer material belt after welding.

[0022] Explanation of Reference Signs:

[0023] 100, material belt welding device; 101, turret; 102, winding needle; 103, welding mechanism; 1031, mounting seat; 1032, driving piece; 1033, welding head; 1034, moving block; 1035, sliding block; 1036, wire rail; 1037, laser generator; 104, cutter; 200, material belt; 2001, first separation film; 2002, first pole piece; 2003, second separation film; 2004, third separation film; 2005, second pole piece; 2006, fourth separation film; 201, starting end; 202, capacitor core; 203, welding spot. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps set forth in the examples, as well as the numerical expressions and values, are not limitations on the scope of the present application, unless otherwise specifically stated.

[0025] The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting to the scope of the application or its applications or uses.

[0026] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0027] In all of the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the application. Thus, other examples of the exemplary embodiments can have different values.

[0028] It should be noted that like references and characters herein relate to like items throughout the figures, and once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0029] In the following description, "connected" can include both direct connection and indirect connection through intervening components, for example, intervening components, intermediate pieces, etc.

[0030] In the following description, the material belt, the separation film, the pole piece, and the separation film are only used to illustrate the working principle of the material belt welding device, the capacitor production device, and the battery production device, and should not be considered as a part of any device or equipment.

[0031] In the following description, the driving piece can adopt the form of motor driving, cylinder driving, etc.

[0032] In the following description, the material belt welding device, the capacitor production device, and the battery production device are only used to illustrate the working principle of the material belt welding device, the capacitor production device, and the battery production device, and should not be considered as a part of any device or equipment. Figures 1 to 5The working principle of the tape welding device 100 is exemplarily illustrated by the capacitor core 202 wound by the tape 200 in the illustrated embodiment, but the tape welding device 100 can also be used in the process of winding the battery core.

[0033] As Figure 1 and Figure 2 shown for clarity, Figure 1 The welding mechanism 103 is omitted in the figure. In the embodiment, the tape welding device 100 comprises a turret 101, wherein the winding needle 102 is installed. The winding needle 102 can rotate around its own axis to wind the tape 200. The turret 101 can rotate to make the winding needle 102 in the winding station or the feeding station.

[0034] Specifically, in the perspective of Figures 1 to 3 , the axis of the winding needle 102 is a line perpendicular to the paper. The multi-layered tape 200 for forming the capacitor core 202 comprises a first isolation film 2001, a second isolation film 2003, a third isolation film 2004, and a fourth isolation film 2006, wherein the first electrode plate 2002 is inserted between the first isolation film 2001 and the second isolation film 2003, and the second electrode plate 2005 is inserted between the third isolation film 2004 and the fourth isolation film 2006. After the first isolation film 2001, the second isolation film 2003, the third isolation film 2004, the fourth isolation film 2006, the first electrode plate 2002, and the second electrode plate 2005 pass through the compression roller, they are inserted into the winding needle 102 in the winding station. After the winding needle 102 in the winding station rotates around its own axis to complete the winding of the multi-layered tape 200 and the first electrode plate 2002 and the second electrode plate 2005, the turret 101 rotates in the clockwise direction as indicated by the arrow, and the winding needle 102 that has completed the winding moves from the winding station to the feeding station, while another winding needle 102 reaches the winding station. It should be understood by those skilled in the art that an end-taping station can also be provided between the winding station and the feeding station. It should be understood by those skilled in the art that in the present application, due to the different production processes of the capacitor or the battery, or the different production processes of the capacitor or the battery itself, the multi-layered tape 200 can only comprise two layers of isolation films, two layers of diaphragms, three layers of isolation films, three layers of diaphragms, or more layers of diaphragms or isolation films, and not only four layers of diaphragms as Figure 1 shown in the figure. That is, the multi-layered tape 200 means that the tape 200 at least comprises two layers of diaphragms of the core or two layers of isolation films of the capacitor core.

[0035] As Figure 2 shown for clarity, Figure 2The welding mechanism 103 is also omitted in the middle. In this embodiment, after the winding needle 102 that completes the winding to form the capacitor core 202 reaches the dispensing station, the cutter 104 cuts the multi-layered tape 200 to form a new starting end 201 of the multi-layered tape 200, so that the winding needle 102 in the winding station rotates around its axis to wind a new capacitor core 202. In this context, the starting end 201 refers to a section of the multi-layered tape 200 that is the innermost layer of the capacitor core 202 or the battery cell, and this section of the multi-layered tape 200 is most prone to misalignment and wrinkling during the dispensing process. For example, the first separation film 2001 and the fourth separation film 2006 are misaligned in the width direction due to external pulling force during the dispensing process. Of course, when winding the first capacitor core 202, the starting end 201 of the multi-layered tape 200 is directly inserted into the winding needle 102 in the winding station, rather than being formed after being cut by the cutter 104.

[0036] As shown in Figure 3 , the tape welding device 100 in the embodiment of the application further includes a welding mechanism 103. The welding mechanism 103 is used to weld the starting end 201 of the multi-layered tape 200 on the winding needle 102 in the winding station.

[0037] Specifically, the welding mechanism 103 can use laser welding, hot melting welding, or other methods to weld the starting end 201 of the multi-layered tape 200 on the winding needle 102 in the winding station. That is, before the winding needle 102 in the winding station completes the winding of the innermost layer of the capacitor core 202, the welding mechanism 103 welds the multi-layered tape 200, thereby welding the multi-layered diaphragm or separation film of the tape 200 together to form a starting end 201 in which the layers of the tape are connected to each other. In this way, after the winding needle 102 in the winding station is wound, the turret 101 reaches the dispensing station, and during the dispensing of the capacitor core 202 at the dispensing station, the layers of the innermost starting end 201 (such as the multi-layered separation film) are welded together, so that the innermost multi-layered tape 200 of the capacitor core 202 does not misalign and wrinkle, thereby improving the production quality of the capacitor. Similarly, in the field of battery production, the innermost multi-layered tape 200 of the battery cell also does not misalign and wrinkle, thereby improving the production quality of the battery.

[0038] As shown in Figure 4 , the welding mechanism 103 of one embodiment of the application includes a mounting seat 1031, a driving member 1032 mounted on the mounting seat, and a welding head 1033. The driving member 1032 is used to drive the welding head 1033 to move along the axis of the winding needle 102.

[0039] Specifically, the mounting base 1031 can be a standalone plate or part of capacitor production equipment or battery production equipment. The drive component 1032 can be pneumatically driven, electrically driven, or similar. Figure 4 In the illustrated embodiment, the drive component 1032 mounted on the mounting base 1031 is a servo motor, which converts the rotation of the motor into the movement of the welding head 1033 via a lead screw drive. In other embodiments of this application, the drive component 1032 can also be a cylinder, using the extension and retraction of the cylinder's moving end to drive the movement of the welding head 1033. The welding head 1033 can be a laser welding head, a hot melt welding head, etc., used for welding the starting end 201 of the multilayer strip 200. Figure 4 From this perspective, the first direction is a direction parallel to the axis of the coil needle 102, and also represents the width direction of the strip 200. The driving member 1032 drives the welding head 1033 to move along the first direction, that is, the welding head 1033 welds the various layers of the strip 200 in the width direction of the strip 200. Those skilled in the art should understand that, in this document, the movement of the welding head 1033 along the axis of the coil needle 102 does not mean that the movement trajectory of the welding head 1033 coincides with the axis of the coil needle 102, but rather that the welding head 1033 moves along a direction approximately parallel to the axis of the coil needle 102, or in other words, the welding head 1033 performs welding work in the width direction of the multi-layer strip 200.

[0040] like Figure 4 As shown, the welding mechanism 103 in this embodiment further includes: a moving block 1034, which is slidably engaged with the mounting base 1031, and the welding head 1033 is mounted on the moving block 1034; the driving member 1032 drives the moving block 1034 to slide relative to the mounting base 1031 so that the welding head 1033 moves along the axial direction of the coiling needle 102.

[0041] Specifically, in one embodiment of this application, the movable block 1034 is fixedly connected to the slider 1035, and a linear guide 1036 is mounted on the mounting base 1031. The slider 1035 slides in engagement with the linear guide 1036, thereby achieving a sliding engagement between the movable block 1034 and the mounting base 1031. In other embodiments of this application, the movable block 1034 can also achieve a sliding engagement with the mounting base 1031 through a groove or other means. After the welding head 1033 is mounted on the movable block 1034, the movement of the welding head 1033 along the first direction will be more stable. The driving member 1032 drives the movable block 1034 to slide relative to the mounting base 1031 along the first direction, so the welding head 1033 will also slide along the first direction, that is, move along the axial direction of the coil needle 102. Because the movement of the welding head 1033 is more stable, it is more effective for applications such as... Figure 5The positioning of each of the welding points 203 is more accurate.

[0042] As shown in Figure 3 , Figure 4 and Figure 5 , in the embodiment of the present application, the welding head 1033 moves along the axis direction of the winding needle 102 to perform multi-point welding on the starting end 201 of the multi-layer material belt 200.

[0043] Specifically, during the movement of the welding head 1033 along the axis direction of the winding needle 102, instead of continuous welding, multi-point welding is performed on the starting end 201 of the multi-layer material belt 200, so that at least two welding points 203 are formed in the width direction of the material belt 200 to prevent excessive deformation of the material belt 200 caused by welding itself.

[0044] As shown in Figure 3 , after the winding needle 102 in the winding station winds the material belt 200 for at least 1 / 2 turn, the welding mechanism 103 welds the starting end 201 of the multi-layer material belt 200.

[0045] Specifically, in the embodiment of the present application, the welding mechanism 103 does not weld the starting end 201 before the winding needle 102 in the winding station starts to wind the multi-layer material belt 200, but welds the starting end 201 after the winding needle 102 winds the material belt 200 for at least 1 / 2 turn (half turn), which can ensure that each layer (at least two diaphragms or at least two isolation films) of the multi-layer material belt 200 is welded together to ensure the welding quality. Of course, the welding should be performed before the innermost turn of the multi-layer material belt 200 is completed.

[0046] As shown in Figure 3 and Figure 4 , in the embodiment of the present application, the welding mechanism 103 is a laser welding mechanism.

[0047] Specifically, as shown in Figure 4 , the laser generator 1037 is used to generate laser, and the welding head 1033 is used to irradiate the laser to the starting end 201 of the multi-layer material belt 200. As shown in Figure 3 , the advantage of using a laser welding mechanism is that first, the welding head 1033 can be set away from the winding needle 102 in the winding station by a distance, which does not interfere with the movement of the winding needle 102 and the turret 101 itself, and second, the power temperature of the laser spot welding is controllable, the welding is firm, and defects such as burning and breaking of the multi-layer material belt 200 do not occur.

[0048] As shown in Figure 3 , in the embodiment of the present application, the welding mechanism 103 welds the starting end 201 of the multi-layer material belt 200 during the rotation of the winding needle 102 in the winding station.

[0049] Specifically, during the rotation of the winding needle 102 around its own axis at the winding station, the multi-layer material belt 200 is wound to form the capacitor core 202 while the welding mechanism 103 welds the starting end 201, without interrupting the winding process of the winding needle 102, and the production efficiency is higher. Moreover, during the rotation of the winding needle 102 at the winding station, the welding head 1033 can also move along the first direction at the same time, and the multi-layer material belt 200 is welded at multiple points in the width direction of the multi-layer material belt 200, so that the welding is firm and the production efficiency of the capacitor core 202 is not affected.

[0050] As shown in FIG. 1, in the embodiment of the present application, the material belt welding device 100 further comprises a cutter 104. The cutter 104 is arranged between the winding station and the discharging station. The welding mechanism 103 welds the starting end 201 of the multi-layer material belt 200 on the winding needle 102 at the winding station after the cutter 104 cuts off the multi-layer material belt 200. Figure 2 Specifically, as shown in FIG. 1, only two stations, the winding station and the discharging station, are shown. The winding needle 102 winds the material belt 200 at the winding station, and the capacitor core 202 on the winding needle 102 is discharged at the discharging station. The cutter 104 cuts off the multi-layer material belt 200 between the winding station and the discharging station. Those skilled in the art should understand that there can also be a finishing and adhesive station between the winding station and the discharging station. At this time, the cutter 104 is located between the winding station and the finishing and adhesive station. After the cutter 104 cuts off the multi-layer material belt 200, the winding needle 102 rotates to finish the material belt 200 at the finishing and adhesive station, and then the tail end of the material belt 200 is pasted to the outermost layer of the capacitor core 202 by using an adhesive tape. Although the cutter 104 is located between the winding station and the finishing and adhesive station in the case of the existence of the finishing and adhesive station, since the finishing and adhesive station is located between the winding station and the discharging station, the cutter 104 is still considered to be located between the winding station and the discharging station. The welding mechanism 103 welds the starting end 201 of the multi-layer material belt 200 on the winding needle 102 at the winding station after the cutter 104 cuts off the multi-layer material belt 200, so that each welding point 203 of the starting end 201 can weld each layer of the material belt together during the winding process of the winding needle 102.

[0051] Figures 1 to 3 According to the second aspect of the present application, a capacitor production equipment is provided, which comprises the material belt welding device 100 as described above. The capacitor production equipment welds the starting end 201 of the multi-layer material belt 200 during the winding process of the capacitor core 202, so as to ensure the production quality of the capacitor.

[0052]

[0053] ​​According to a third aspect of the present application, a battery production device is provided, which comprises the material belt welding device 100 as described above. The battery production device welds the starting end 201 of the multi-layer material belt 200 during the winding process of the battery cell, thereby ensuring the production quality of the battery. Different from the above-mentioned embodiments, in the battery production device, only two layers of separators and two layers of electrode plates can be wound, and accordingly, the starting end 201 of the multi-layer material belt 200 can only have two layers of separators, and the welding mechanism 103 can weld the two layers of separators.

[0054] In various embodiments of the present application, "a plurality of" refers to at least two, including two, three or more.

[0055] In the capacitor production device or the battery production device of the present application, a winding shaft for unwinding each layer of material belt 200 (e.g. isolation film, separator), an electrode plate, a rectification mechanism, a sheet insertion mechanism for inserting the first electrode plate 2002 or the second electrode plate 2005 between two layers of material belt, etc. can also be included.

[0056] In the above embodiments, the focus is on the differences between various embodiments, and the optimization features that are different between various embodiments can be combined to form a more optimal embodiment as long as they are not contradictory. In view of the brevity of the writing, they will not be described here.

[0057] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A strip welding device (100), characterized in that, The application relates to a tape welding device (100) comprising: a turret (101) provided with a winding needle (102) capable of rotating around its own axis to wind a tape (200), the turret (101) being capable of rotating to place the winding needle (102) in a winding position or a feeding position; a welding mechanism (103) for welding a starting end (201) of a multi-layer tape (200) on the winding needle (102) in the winding position.

2. The tape welding apparatus of claim 1, wherein The welding mechanism (103) comprises: a mounting base (1031); a driving member (1032) mounted on the mounting base; a welding head (1033) driven by the driving member (1032) to move along the axis of the winding needle (102).

3. The tape welding apparatus of claim 2, wherein The welding mechanism (103) further comprises: a moving block (1034) in sliding cooperation with the mounting base (1031), the welding head (1033) being mounted on the moving block (1034); the driving member (1032) drives the moving block (1034) to slide relative to the mounting base (1031) to move the welding head (1033) along the axis of the winding needle (102).

4. The tape weld apparatus of claim 2, wherein, The welding head (1033) moves along the axis of the winding needle (102) to weld the starting end (201) of the multi-layer tape (200) at multiple points.

5. The tape weld apparatus of claim 1, wherein, The welding mechanism (103) welds the starting end (201) of the multi-layer tape (200) after the winding needle (102) in the winding position winds the tape (200) for at least 1 / 2 turn.

6. The tape weld apparatus of claim 1, wherein, The welding mechanism (103) is a laser welding mechanism.

7. The tape weld apparatus of claim 1, wherein, The welding mechanism (103) welds the starting end (201) of the multi-layer tape (200) during the rotation of the winding needle (102) in the winding position.

8. The tape weld apparatus of claim 1, wherein, Further comprising: a cutter (104) arranged between the winding position and the feeding position; the welding mechanism (103) welds the starting end (201) of the multi-layer tape (200) on the winding needle (102) in the winding position after the cutter (104) cuts the multi-layer tape.

9. A capacitor production apparatus characterized by comprising: The application relates to a tape welding device (100) comprising:

10. A battery production apparatus characterized by comprising: The application relates to a tape welding device (100) comprising: The application relates to a tape welding device (100) comprising:

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