Battery cell winding device and battery cell winding equipment

Abstract

The utility model discloses a battery core winding device and battery core winding equipment, and the battery core winding device comprises a rotating tower mechanism which is provided with a winding needle and can rotate to enable the winding needle to be located at a winding station or a rubberizing station; the adsorption mechanism is used for adsorbing the first pole piece; and the driving mechanism is used for driving the adsorption mechanism to move so as to adsorb the first pole piece between the winding station and the rubberizing station, and pulling the first pole piece to be far away from the diaphragm between the winding station and the rubberizing station. According to the invention, the quality and the yield of battery cell production can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery production equipment, in particular to a battery cell winding device and a battery cell winding equipment. BACKGROUND

[0002] In the process of battery production, a winding needle is required to wind a material belt (including a diaphragm and a pole piece) to form a battery cell, wherein the pole piece is divided into a first pole piece and a second pole piece with different polarities. In one battery cell production process, the first pole piece and the second pole piece are cut by a cutter after being wound by a winding needle in a winding station for a predetermined length, at which time the length of the first pole piece that is not wound into the battery cell is required to be greater than the length of the second pole piece that is not wound into the battery cell, so as to make the first pole piece wind in the outermost circle of the battery cell. Then, the winding needle in the winding station moves to a rubberizing station, and the cutter mechanism cuts the material belt between the winding station and the rubberizing station, but at this time, the first pole piece is very close to the diaphragm due to the longer first pole piece, so that the cutter mechanism is easy to cut the first pole piece when cutting, thereby making the first pole piece unable to wind in the outermost circle of the battery cell, or damaging the first pole piece, resulting in reduced production quality and yield of the battery cell. SUMMARY

[0003] One object of the present application is to provide a new technical solution of a battery cell winding device and a battery cell winding equipment.

[0004] To achieve the above object, according to a first aspect of the present application, a battery cell winding device is provided, comprising:

[0005] a turret mechanism, wherein the turret mechanism is installed with a winding needle, and the turret mechanism is capable of rotating to make the winding needle in a winding station or a rubberizing station;

[0006] an adsorption mechanism, wherein the adsorption mechanism is used for adsorbing the first pole piece;

[0007] a driving mechanism, wherein the driving mechanism is used for driving the adsorption mechanism to move to adsorb the first pole piece between the winding station and the rubberizing station, and to pull the first pole piece away from the diaphragm between the winding station and the rubberizing station.

[0008] Optionally, the battery cell winding device further comprises a cutter mechanism, wherein the cutter mechanism is oppositely arranged with the adsorption position of the adsorption mechanism, the cutter mechanism is located on the side of the diaphragm away from the first pole piece, and the cutter mechanism is used for cutting the diaphragm.

[0009] Optionally, the turret mechanism is installed with at least two winding needles, and the adsorption mechanism is arranged between the adjacent two winding needles.

[0010] Optionally, the rotating turret mechanism comprises a support shaft and a needle support plate, the support shaft is rotatable, the support shaft is fixedly connected with the needle support plate, the needle support plate is used for mounting the needle, and the suction mechanism is mounted on the support shaft or the needle support plate.

[0011] Optionally, the driving mechanism is mounted on the support shaft, or the driving mechanism drives the support shaft to rotate, the support shaft is connected with a transmission mechanism, the transmission mechanism is connected with the suction mechanism to convert the rotation of the support shaft into the movement of the suction mechanism.

[0012] Optionally, the suction mechanism comprises:

[0013] a suction member, the suction member is provided with a suction hole;

[0014] a rotating shaft assembly, the rotating shaft assembly is fixedly connected with the suction member;

[0015] a support, the support is rotationally matched with the rotating shaft assembly, and the support is fixedly connected with the support shaft.

[0016] Optionally, the driving mechanism mounted on the support shaft drives the rotating shaft assembly to rotate to make the suction member overturn, or the driving mechanism drives the support shaft to rotate, the support shaft is connected with the transmission mechanism, the transmission mechanism is connected with the rotating shaft assembly to convert the rotation of the support shaft into the rotation of the rotating shaft assembly.

[0017] Optionally, the transmission mechanism comprises:

[0018] a connecting shaft, one end of the connecting shaft is connected with the rotating shaft assembly;

[0019] a cam, the cam is provided with a cam surface;

[0020] the support shaft drives the connecting shaft through the support and the rotating shaft assembly, when the connecting shaft rotates with the support shaft, the cam surface abuts against the other end of the connecting shaft to make the connecting shaft drive the rotating shaft assembly to rotate.

[0021] Optionally, one end of the connecting shaft is provided with a nut, the nut is threadedly matched with the rotating shaft assembly, when the connecting shaft rotates with the support shaft, the cam surface abuts against the other end of the connecting shaft to make the nut move, and the movement of the nut is converted into the rotation of the rotating shaft assembly through the threadedly matched structure.

[0022] Optionally, the rotating shaft assembly comprises a rotating shaft and a threaded rod, the threaded rod is threadedly matched with the nut, and the rotating shaft is connected with the threaded rod through a shaft coupling.

[0023] Optionally, one end of the connecting shaft is fixedly connected with a connecting disc, the connecting disc is fixedly connected with the nut, the connecting disc is provided with a guide rod, and the guide rod is in sliding fit with the winding needle support plate.

[0024] Optionally, the other end of the connecting shaft is provided with a roller, the roller is in abutment with the cam curved surface, the cam is provided with a track groove, the roller can roll in the track groove, and the cam curved surface is formed on a side wall of the track groove.

[0025] Optionally, the cam is provided with a waist-shaped hole, and a fastener is fastened to the fixing plate through the waist-shaped hole.

[0026] Optionally, during movement of the winding needle from the winding station to the rubberizing station, the suction member of the suction mechanism first approaches and then moves away from the diaphragm between the winding station and the rubberizing station.

[0027] Optionally, during movement of the winding needle from the winding station to the rubberizing station, only the suction member of the suction mechanism between the winding station and the rubberizing station is turned over.

[0028] According to a second aspect of the present application, an electric core winding device is also provided, which comprises the electric core winding device according to any one of the preceding aspects.

[0029] The electric core winding device in the embodiment of the present application has the following advantages. Since the driving mechanism drives the suction mechanism to approach the first pole piece, the first pole piece is adsorbed between the winding station and the rubberizing station, and then the driving mechanism drives the suction mechanism to move away from the diaphragm between the winding station and the rubberizing station, so that the first pole piece adsorbed by the suction mechanism moves away from the diaphragm between the winding station and the rubberizing station. Therefore, when the cutter mechanism cuts the diaphragm, the first pole piece will not be cut or will not be cut, so that the first pole piece can be completely wound on the outermost circle of the electric core, and the production quality and the yield of the electric core are improved.

[0030] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] 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 application.

[0032] Figure 1 is a working principle diagram of an electric core winding device according to an embodiment of the present application, in which the first winding needle is in the winding station.

[0033] Figure 2is a working principle diagram of the battery cell winding device of one embodiment of the present application, wherein the first winding needle is between the winding station and the adhesive station.

[0034] Figure 3 is a working principle diagram of the battery cell winding device of one embodiment of the present application, which shows the process of the suction member turning to be close to the diaphragm during the first winding needle moving from the winding station to the adhesive station.

[0035] Figure 4 is a working principle diagram of the battery cell winding device of one embodiment of the present application, which shows the process of the suction member turning to be away from the diaphragm during the first winding needle moving from the winding station to the adhesive station.

[0036] Figure 5 is a perspective view of the battery cell winding device of one embodiment of the present application.

[0037] Figure 6 is a partial enlarged view of the battery cell winding device of one embodiment of the present application.

[0038] Figure 7 is a perspective view of the suction mechanism of one embodiment of the present application.

[0039] Figure 8 is a front view of the suction mechanism of the first embodiment of the present application.

[0040] Figure 9 is a sectional view along the line A-A in Figure 8 .

[0041] Figure 10 is a perspective view of the cam of one embodiment of the present application.

[0042] Explanation of reference signs:

[0043] 1. A cell winding device; 100, a cell winding apparatus; 101, a turret mechanism; 102, a winding needle; 1021, a first winding needle; 1022, a second winding needle; 1023, a third winding needle; 103, a suction mechanism; 1031, a first suction mechanism; 1032, a second suction mechanism; 1033, a third suction mechanism; 1034, a suction member; 1035, a suction hole; 1036, a rotating shaft assembly; 10361, a rotating shaft; 10362, a threaded rod; 1037, a negative pressure channel; 1038, a support; 1039, a connecting shaft; 10310, a nut; 10311, a roller; 10312, a coupling; 10313, a connecting disc; 10314, a guide rod; 104, a cutter mechanism; 105, a support shaft; 106, a winding needle support plate; 107, a cam; 1071, a cam surface; 1072, a track groove; 1073, a waist-shaped hole; 108, a fixed plate; 109, a fixed seat; 200, a cell; 201, a separator; 202, a second pole piece; 203, a first pole piece; 301, a first cutter; 302, a second cutter. DETAILED DESCRIPTION

[0044] 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 arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0045] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the scope of the application or its application or uses.

[0046] Techniques, methods, and devices 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 description if appropriate.

[0047] In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0048] It should be noted that like reference numerals and letters refer to like items throughout the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0049] In the following description, "connection" includes both direct connection and indirect connection through, for example, an adapter plate, an intermediate member, or the like, between the two.

[0050] In the following description, "pole piece" and "separator" are used only to explain the working principle of the cell winding apparatus and the cell winding device, and should not be considered as a part of the cell winding apparatus and the cell winding device.

[0051] In the following description, the various driving components and driving mechanisms can be driven by a variety of power sources such as cylinders and motors.

[0052] like Figures 1 to 4 As shown, according to one embodiment of this application, a battery cell winding device 100 is provided, comprising: a turret mechanism 101, wherein a winding needle 102 is mounted on the turret mechanism 101, and the turret mechanism 101 is rotatable to position the winding needle 102 at a winding station or an adhesive application station; an adsorption mechanism 103 for adsorbing a first electrode 203; and a driving mechanism for driving the adsorption mechanism 103 to move to adsorb the first electrode 203 between the winding station and the adhesive application station, and to pull the first electrode 203 away from the diaphragm 201 between the winding station and the adhesive application station.

[0053] Specifically, such as Figure 1 As shown, in the battery cell winding apparatus 1 of this application embodiment, a battery cell winding device 100 is used. A first diaphragm 201, a second electrode 202, another second diaphragm 201, and a first electrode 203 are alternately arranged and then wound by the battery cell winding device 100 to form a battery cell 200. The first electrode 203 and the second electrode 202 have different polarities; one is a cathode and the other an anode. After the first electrode 203 and the second electrode 202 are wound to a predetermined length, a first cutter 301 cuts the second electrode 202, and a second cutter 302 cuts the first electrode 203. At this time, the length of the first electrode 203 not wound into the battery cell 200 is greater than the length of the second electrode 202 not wound into the battery cell 200. The purpose of this is to ensure that the first electrode 203 is wound onto the outermost ring of the battery cell 200.

[0054] In this embodiment, the turret mechanism 101 is equipped with three winding needles 102, which are labeled as the first winding needle 1021, the second winding needle 1022, and the third winding needle 1023 for clarity. In practical applications, the number of winding needles 102 can be increased or decreased, for example, using two, four, or more. The turret mechanism 101 can rotate counterclockwise; this rotation is referred to as revolution in this document. In this embodiment, there are three workstations: a winding workstation, an adhesive application workstation, and a material unloading workstation. Figure 1In the process, the first winding needle 1021 is in the winding station, rotating counterclockwise around its own axis to wind the diaphragm 201, the first electrode 203, and the second electrode 202, ensuring that the second electrode 202 is completely wound onto the battery cell 200. The second winding needle 1022 is in the adhesive application station, and the third winding needle 1023 is in the unloading station. Corresponding to the three winding needles 102, the turret mechanism 101 is equipped with three adsorption mechanisms 103, which are labeled as the first adsorption mechanism 1031, the second adsorption mechanism 1032, and the third adsorption mechanism 1033 for clarity.

[0055] like Figure 2 As shown, the turret mechanism 101 revolves counterclockwise, driving the first winding needle 1021 from the winding station to the adhesive application station. During this process, the first winding needle 1021 continues to pull the diaphragm 201 and the first electrode 203. The third adsorption mechanism 1033 begins to rotate counterclockwise around its own axis as the turret mechanism 101 revolves.

[0056] like Figure 3 As shown, the first winding needle 1021 reaches the adhesive application station, the second winding needle 1022 reaches the unloading station, and the third winding needle 1023 reaches the winding station. Due to the traction of the first winding needle 1021, a diaphragm 201 and a first electrode 203 exist between the winding station and the adhesive application station. If the cutting mechanism 104 is used directly to cut them at this time, it is easy to cut both layers of diaphragm 201 and the first electrode 203 at the same time, resulting in the battery cell 200 being defective. Therefore, in the embodiments of this application, during the movement of the first winding needle 1021 from the winding station to the adhesive application station, the driving mechanism drives the third adsorption mechanism 1033 to first move as follows: Figure 3 The solid line indicates the second position, which is away from the diaphragm 201 (and also away from the first electrode 203). The position is rotated counterclockwise to the first position, which is close to the diaphragm 201 (and also close to the first electrode 203), as indicated by the dashed line. When the third adsorption mechanism 1033 is in the first position, the third adsorption mechanism 1033 can adsorb the first electrode 203 between the winding station and the adhesive application station.

[0057] like Figure 4 As shown, during the process of the first coil needle 1021 moving from the winding station to the adhesive application station, after the third adsorption mechanism 1033 adsorbs the first electrode 203, the driving mechanism can drive the third adsorption mechanism 1033 to rotate clockwise from the first position shown by the dotted line back to the second position shown by the solid line. During this process, the third adsorption mechanism 1033 keeps adsorbing the first electrode 203 and pulls the first electrode 203 away from the diaphragm 201 between the winding station and the adhesive application station, so that the first electrode 203 and the diaphragm 201 are separated by a large distance, and the first electrode 203 no longer approaches the diaphragm 201.

[0058] After the third adsorption mechanism 1033 pulls the first electrode 203 away from the diaphragm 201, the cutting mechanism 104 cuts the two layers of diaphragm 201. At this time, since the second electrode 202 has been wound, the cutting mechanism 104 will not cut the second electrode 202. Similarly, since the first electrode 203 is away from the diaphragm 201, the cutting mechanism 104 will not cut the first electrode 203. In other words, in Figure 4 In the middle, the cutting mechanism 104 cuts only two layers of diaphragm 201. Then, the first winding needle 1021 continues to rotate counterclockwise to wind up the remaining diaphragm 201 and the first electrode 203. After winding up, the first electrode 203 is wound on the outermost ring of the cell 200, and then the tail of the first electrode 203 is glued with tape.

[0059] As can be seen from the above description, since the driving mechanism drives the adsorption mechanism 103 to move, the adsorption mechanism 103 first adsorbs the first electrode 203 between the winding station and the adhesive application station. Then, the adsorption mechanism 103 pulls the adsorbed first electrode 203 away from the separator 201. Therefore, when the cutting mechanism 104 cuts the separator 201, it will not cut the first electrode 203, ensuring that the first electrode 203 can be completely wound on the outermost ring of the cell 200, thus ensuring the quality of the cell 200.

[0060] In such Figures 1 to 4 In the illustrated embodiment, the adsorption mechanism 103 is driven by a drive mechanism to rotate and flip to reach the first or second position. In other embodiments of this application, the adsorption mechanism 103 can also translate, for example, by being driven by a cylinder, motor, or other drive mechanism to make linear motion. It can also approach and adsorb the first electrode 203 between the winding station and the adhesive application station, and then move away from the diaphragm 201 between the winding station and the adhesive application station, so that the diaphragm 201 between the winding station and the adhesive application station is far away from the first electrode 203. In one embodiment of this application, the adsorption mechanism 103 can be installed on the turret mechanism 101, so that the adsorption mechanism 103 can change its position as the turret mechanism 101 rotates, ensuring that the relative position of each adsorption mechanism 103 and the winding needle 102 is fixed. Therefore, the position of adsorbing the first electrode 203 is also fixed, ensuring the production accuracy of the battery cell 200. In other embodiments of this application, the adsorption mechanism 103 may not be installed on the turret mechanism 101. For example, the drive mechanism may be installed on a fixed plate or at a suitable position on the battery cell winding device 1. The drive mechanism is then connected to the adsorption mechanism 103, so that the adsorption mechanism 103 moves between the winding station and the adhesive application station. In this case, only one adsorption mechanism 103 needs to be set up.

[0061] If the turret mechanism 101 continues to revolve, the first coil needle 1021 will move from the adhesive application station to the unloading station, where the battery cell 200 will be unloaded.

[0062] likeFigure 3 and Figure 4 As shown, the cutting mechanism 104 and the adsorption mechanism 103 are positioned opposite each other. The cutting mechanism 104 is located on the side of the diaphragm 201 away from the first electrode 203. The cutting mechanism 104 is used to cut the diaphragm 201.

[0063] Specifically, in such Figure 3 and Figure 4 From this perspective, the cutting mechanism 104 is located on the left side of the diaphragm 201, while the first electrode 203 is located on the right side of the diaphragm 201. Therefore, the cutting mechanism 104 is located on the side of the diaphragm 201 away from the first electrode 203. The cutting mechanism 104 is positioned opposite to the adsorption position (i.e., the first position) of the adsorption mechanism 103, which means that the position where the cutting mechanism 104 cuts the diaphragm 201 corresponds exactly to the position where the adsorption mechanism 103 pulls the first electrode 203 away from the diaphragm 201. This ensures that the cutting mechanism 104 has sufficient distance from the first electrode 203 when cutting the diaphragm 201, thus avoiding damage to the first electrode 203.

[0064] like Figures 1 to 4 As shown in the embodiments of this application, the turret mechanism 101 is equipped with three winding needles 102, which ensures that there is one winding needle 102 at each of the winding station, the adhesive application station, and the unloading station when the turret mechanism 101 revolves. In the embodiments of this application, there are at least two winding needles 102, and an adsorption mechanism 103 is provided between two adjacent winding needles 102.

[0065] Specifically, when there are two winding needles 102, the battery cell 200 can be cut at the adhesive application station. When there are more than three winding needles 102, more stations can be set up. However, an adsorption mechanism 103 needs to be set between any two adjacent winding needles 102. This ensures that when one of the two adjacent winding needles 102 is at the winding station and the other is at the adhesive application station, there must be an adsorption mechanism 103 that can adsorb the first electrode 203 between the winding station and the adhesive application station and pull the first electrode 203 to separate it from the separator 201.

[0066] like Figures 1 to 6 As shown in the embodiment of this application, the turret mechanism 101 includes a support shaft 105 and a needle winding support plate 106. The support shaft 105 is rotatable and is fixedly connected to the needle winding support plate 106. The needle winding support plate 106 is used to install the needle winding 102. The adsorption mechanism 103 is installed on the support shaft 105 or the needle winding support plate 106.

[0067] Specifically, the support shaft 105 can be driven to rotate by a driving mechanism such as a motor, a pneumatic cylinder, etc. Since the support shaft 105 is part of the turret mechanism 101, the rotation of the support shaft 105 is also referred to as revolution. The needle support plate 106 is used to mount the needle 102. For clarity, only the mounting seat of the needle 102 is shown in Figure 5 and the needle 102 is omitted in Figure 6 . The support shaft 105 is fixedly connected with the needle support plate 106 by welding, riveting, bolting, etc. Therefore, when the support shaft 105 revolves, it drives the needle support plate 106 to revolve, thereby driving the needle 102 to move between the winding station, the rubberizing station, and the unloading station. The suction mechanism 103 can be mounted on the support shaft 105, so that the suction mechanism 103 can revolve synchronously with the turret mechanism 101 when the support shaft 105 revolves, thereby enabling the suction mechanism 103 to move between the winding station and the rubberizing station along with the corresponding needle 102, occupying less space and eliminating the need to separately provide a revolution driving device for the suction mechanism 103. Similarly, the suction mechanism 103 can also be mounted on the needle support plate 106, and the suction mechanism 103 can revolve synchronously with the needle support plate 106 when the needle support plate 106 revolves, thereby enabling the suction mechanism 103 to move between the winding station and the rubberizing station along with the corresponding needle 102, occupying less space and eliminating the need to separately provide a revolution driving device for the suction mechanism 103.

[0068] Optionally, the driving mechanism is mounted on the support shaft 105; or the driving mechanism drives the support shaft to rotate, the support shaft is connected with a transmission mechanism, and the transmission mechanism is connected with the suction mechanism to convert the rotation of the support shaft into the movement of the suction mechanism.

[0069] Specifically, in one embodiment of the present application, the driving mechanism can adopt independent motors, air cylinders, etc. The driving mechanism is installed on the support shaft 105, and the adsorption mechanism 103 is connected with the driving mechanism so as to be driven by the driving mechanism. At this time, the adsorption mechanism 103 is indirectly installed on the support shaft 105, and the driving mechanism can drive the adsorption mechanism 103 to approach the diaphragm 201 to adsorb the first pole piece 203, or drive the adsorption mechanism 103 to move away from the diaphragm 201 to pull the adsorbed first pole piece 203 away from the diaphragm 201. At this time, the driving mechanism only drives the adsorption mechanism 103 to move towards or away from the diaphragm 201, and the structure is simple. In another embodiment of the present application, the independent motors, air cylinders, etc. are no longer needed to drive the adsorption mechanism 103, but the driving mechanism driving the support shaft 105 to rotate is used to indirectly drive the adsorption mechanism 103 to move. For example, a crankshaft connecting rod mechanism can be used as a transmission mechanism, and the crankshaft connecting rod mechanism connects the support shaft 105 and the adsorption mechanism 103. At this time, the driving mechanism drives the support shaft 105 to rotate, and the rotation of the support shaft 105 is converted into the linear motion of the adsorption mechanism 103 through the crankshaft connecting rod mechanism, so as to drive the adsorption mechanism 103 to approach or move away from the diaphragm 201 between the winding work station and the rubberizing work station, or the connecting shaft 1039 and the cam 107 described below are used as a transmission mechanism. The driving mechanism drives the support shaft 105 to rotate, and the rotation of the support shaft 105 is converted into the motion of the adsorption mechanism 103 through the connecting shaft 1039 and the cam 107. In the embodiment in which the driving mechanism drives the support shaft 105 to rotate, and the support shaft 105 drives the adsorption mechanism 103 to move through the transmission mechanism, the support shaft 105 and the adsorption mechanism 103 of the entire battery cell winding device 100 share one driving mechanism, which can drive the winding needle 102 and the adsorption mechanism 103 at the same time, thereby reducing the cost and saving the space. According to the above embodiments, those skilled in the art can understand that any mechanism capable of converting the rotation of the support shaft 105 into the motion of the adsorption mechanism 103 approaching or moving away from the diaphragm 201 between the winding work station and the rubberizing work station, such as a crankshaft connecting rod mechanism, a gear rocker mechanism, a screw mechanism, etc. can be used as a transmission mechanism.

[0070] As shown in Figures 5 to 9 The adsorption mechanism 103 in the embodiment of the present application includes an adsorption member 1034, a rotating shaft assembly 1036, and a support 1038. The adsorption member 1034 is provided with an adsorption hole 1035. The rotating shaft assembly 1036 is fixedly connected with the adsorption member 1034. The support 1038 is rotationally matched with the rotating shaft assembly 1036, and the support 1038 is fixedly connected with the support shaft 105.

[0071] Specifically, in the present application, the suction member 1034 is used for suctioning the first pole piece 203. The suction member 1034 is provided with a plurality of suction holes 1035, and the plurality of suction holes 1035 are in communication with a negative pressure channel 1037. The negative pressure channel 1037 is connected with a negative pressure mechanism (not shown in the figure), so that a negative pressure is formed at the suction hole 1035 to suction the first pole piece 203. The rotating shaft assembly 1036 is fixedly connected with the suction member 1034, so that the rotation of the rotating shaft assembly 1036 can drive the suction member 1034 to rotate (also referred to as "turn over"). The support 1038 is in rotational cooperation with the rotating shaft assembly 1036, and supports the rotating shaft assembly 1036. After the two ends of the rotating shaft assembly 1036 are supported by the support 1038, the rotating shaft assembly 1036 can rotate around the axis of the rotating shaft assembly 1036. The support 1038 is fixedly connected with the support shaft 105, so that the revolution of the support shaft 105 can drive the support 1038 to revolve, so that each suction member 103 can reach between the winding station and the rubberizing station along with the revolution of the turret mechanism 101. The rotating shaft assembly 1036 can be driven to rotate by a single motor, a cylinder multi-link mechanism as a driving mechanism, or by the support shaft 105 and a transmission mechanism. Regardless of the driving mode, the suction member 1034 can revolve along with the support shaft 105 to reach between the winding station and the rubberizing station through the driving of the support 1038.

[0072] In one embodiment of the present application, a driving mechanism installed on the support shaft 105 drives the rotating shaft assembly 1036 to rotate to make the suction member 1034 turn over. In another embodiment of the present application, the driving mechanism drives the support shaft to rotate, the support shaft is connected with the transmission mechanism, and the transmission mechanism is connected with the rotating shaft assembly to convert the rotation of the support shaft into the rotation of the rotating shaft assembly.

[0073] Specifically, when the motor, cylinder linkage mechanism or other independent driving mechanism installed on the support shaft 105 is used to drive the rotation of the rotating shaft assembly 1036, another set of driving elements drives the revolution of the support shaft 105, and then the support shaft 105 only drives the revolution of the adsorption component 1034 between the winding station and the rubberizing station, and the independent driving mechanism drives the rotation of the rotating shaft assembly 1036 to make the adsorption component 1034 flip to approach or move away from the diaphragm 201 between the winding station and the rubberizing station. Alternatively, the support shaft 105 and the adsorption mechanism 103 share a set of driving mechanisms, the driving mechanism drives the revolution of the support shaft 105, and then the support shaft 105 drives the revolution of the adsorption component 1034 through the support 1038 and the rotating shaft assembly 1036, and at the same time, the rotating shaft assembly 1036 is driven to rotate by the transmission mechanism, so that the adsorption component 1034 flips. At this time, the support shaft 105 and the adsorption mechanism 103 share a driving mechanism. For example, the transmission mechanism uses the connecting shaft 1039 and the cam 107 as described below, or the transmission mechanism uses a gear transmission set, the driving gear is sleeved on the support shaft 105, the intermediate gear is installed on the fixed plate 108, and the driven gear is sleeved on the rotating shaft assembly 1036. The driving gear and the intermediate gear (set) are always engaged, and during the revolution of the winding needle 102 from the winding station to the rubberizing station, the driven gear on the rotating shaft assembly 1036 of the corresponding adsorption mechanism 103 enters engagement with the intermediate gear (set). In this way, the support shaft 105 will drive the driving gear to rotate during rotation, the driving gear will drive the intermediate gear (set) to rotate, the intermediate gear (set) will drive the driven gear to rotate, and the driven gear will drive the rotating shaft assembly 1036 to rotate. For example, the driving gear is first transmitted to the driven gear through an intermediate gear, so that the rotating shaft assembly 1036 rotates counterclockwise, and then the driving gear is transmitted through two intermediate gears that are engaged with each other, so that the rotating shaft assembly 1036 rotates clockwise. Those skilled in the art should understand that any mechanism that can convert the rotation of the support shaft 105 into the rotation of the rotating shaft assembly 1036 can be used as the transmission mechanism.

[0074] As shown in Figure 5 , Figure 6 and Figure 10 , the embodiment of the application specifically shows a transmission mechanism. The transmission mechanism includes a connecting shaft 1039 and a cam 107. One end of the connecting shaft 1039 is connected with the rotating shaft assembly 1036. The cam 107 is provided with a cam surface 1071. The support shaft 105 drives the connecting shaft 1039 through the support 1038 and the rotating shaft assembly 1036. When the connecting shaft 1039 rotates with the support shaft 105, the other end of the connecting shaft 1039 is abutted by the cam surface 1071 to make the connecting shaft 1039 drive the rotating shaft assembly 1036 to rotate.

[0075] Specifically, in one embodiment of the present application, the support shaft 105 is indirectly connected with the transmission mechanism. The connecting shaft 1039 is in sliding fit with the needle support plate 106, so the connecting shaft 1039 can reciprocate along the axial direction of itself. One end of the connecting shaft 1039 is connected with the rotating shaft assembly 1036, and the other end is in abutment with the cam surface 1071 of the cam 107. The cam 107 is mounted on the fixed plate 108, and the fixed plate 108 is mounted on the fixed seat 109, so the cam 107 is stationary. The fixed plate 108 can be a support plate of the support shaft 105, or a plate fixed at other positions. The driving mechanism drives the support shaft 105 to revolve, and the support shaft 105 can drive the rotating shaft assembly 1036 to revolve through the support seat 1038, and the rotating shaft assembly 1036 drives the connecting shaft 1039 to revolve due to the connection relationship between them, and the connecting shaft 1039 can abut different positions of the cam surface 1071 in the process of revolving with the support shaft 105, so the cam surface 1071 can make the connecting shaft 1039 move along the axial direction of itself while revolving with the support shaft 105. In one embodiment of the present application, the specific structure of the connecting shaft 1039 driving the rotating shaft assembly 1036 to rotate is that one end of the connecting shaft 1039 is provided with a nut 10310, the nut 10310 has internal threads, the rotating shaft assembly 1036 is provided with external threads, and the internal threads of the nut 10310 are matched with the external threads of the rotating shaft assembly 1036. Therefore, when the support shaft 105 revolves, it drives the needle support plate 106 and the support seat 1038 to revolve, and the support seat 1038 drives the rotating shaft assembly 1036 to revolve, and the rotating shaft assembly 1036 drives the nut 10310 to revolve, and the nut 10310 drives the connecting shaft 1039 to revolve. In the process of revolving, the connecting shaft 1039 abuts different positions of the cam surface 1071 of the cam 107, so the cam surface 1071 pushes the connecting shaft 1039 to move along the axial direction of itself while revolving, and the movement of the connecting shaft 1039 along the axial direction drives the nut 10310 to move (i.e., translate) along the axial direction of the thread hole of itself. Since the nut 10310 is in threaded fit with the rotating shaft assembly 1036, the movement of the nut 10310 drives the rotating shaft assembly 1036 to rotate around its own axis, and the rotating shaft assembly 1036 drives the suction member 1034 to rotate, so that the suction member 1034 flips to approach the diaphragm 201 between the winding station and the rubber applying station to adsorb the first pole piece 203, or the suction member 1034 flips away from the diaphragm 201 between the winding station and the rubber applying station to pull the first pole piece 203 away from the diaphragm 201 between the winding station and the rubber applying station.In another embodiment of the present application, the specific structure of the connecting shaft 1039 driving the rotation of the rotating shaft assembly 1036 is that one end of the connecting shaft 1039 can be hinged with the rotating shaft assembly 1036 through a multi-link structure or connected through a gear and rack structure, so that during the revolution of the connecting shaft 1039 with the support shaft 105, the movement of the connecting shaft 1039 can be converted into the rotation of the rotating shaft assembly 1036 through the abutment with the cam surface 1071, thereby driving the suction member 1034 to flip. Those skilled in the art should understand that the connecting shaft 1039 can drive the rotating shaft assembly 1036 to rotate through various transmission modes, which will not be described in detail herein.

[0076] As can be seen from the above description, in the embodiments of the present application, a set of driving mechanism is used to drive the rotation of the support shaft 105, which can not only drive the pin 102 to revolve between the winding station, the rubberizing station and the blanking station, but also drive the suction mechanism 103 to revolve between the winding station and the rubberizing station, and further drive the suction member 1034 of the suction mechanism 103 to flip. Only one set of driving mechanism for driving the support shaft 105 is needed, which is simple in structure, low in cost, small in occupied space and can avoid the interference between various mechanisms in the battery cell winding equipment 1 as much as possible.

[0077] Optionally, one end of the connecting shaft 1039 is provided with a nut 10310, the nut 10310 is threadedly matched with the rotating shaft assembly 1036, and when the connecting shaft 1039 rotates with the support shaft 105, the other end of the connecting shaft 1039 is abutted by the cam surface 1071 to move the nut 10310, and the movement of the nut 10310 is converted into the rotation of the rotating shaft assembly 1036 through the thread matching.

[0078] Specifically, one end of the connecting shaft 1039 is provided with a nut 10310 having an internal thread, and the rotating shaft assembly 1036 is provided with an external thread. The internal thread of the nut 10310 cooperates with the external thread of the rotating shaft assembly 1036, so that the support shaft 105 revolves, driving the needle support plate 106 and the support 1038 to revolve, and the support 1038 revolves, driving the rotating shaft assembly 1036 to revolve, and the rotating shaft assembly 1036 drives the nut 10310 to revolve, and the nut 10310 drives the connecting shaft 1039 to revolve around the support shaft 105. During the revolution of the connecting shaft 1039, the connecting shaft 1039 abuts against different positions of the cam curve 1071 of the cam 107, so that the cam curve 1071 pushes the connecting shaft 1039 to move in the axial direction of the connecting shaft 1039 while revolving, and the movement of the connecting shaft 1039 in the axial direction drives the nut 10310 to move (i.e., translate) along the axis of the thread hole of the nut 10310. Since the nut 10310 cooperates with the rotating shaft assembly 1036 in a threaded manner, the movement of the nut 10310 drives the rotating shaft assembly 1036 to rotate around the axis of the rotating shaft assembly 1036, and the rotating shaft assembly 1036 drives the suction member 1034 to rotate, so that the suction member 1034 is flipped to approach or move away from the diaphragm 201 between the winding station and the rubberizing station, thereby adsorbing or pulling away the first pole piece 203 from the diaphragm 201. The threaded cooperation has the advantages of converting the translational motion into rotational motion in a small space, and is simple and reliable.

[0079] As shown in FIG. 1, Figure 9 In an embodiment of the present application, the rotating shaft assembly 1036 includes a rotating shaft 10361 and a threaded rod 10362, and the threaded rod 10362 cooperates with the nut 10310 in a threaded manner, and the rotating shaft 10361 is connected with the threaded rod 10362 through a shaft coupling 10312.

[0080] Specifically, in an embodiment of the present application, the rotating shaft assembly 1036 is divided into two sections, one section being the rotating shaft 10361 for mounting the suction member 1034, and the other section being the threaded rod 10362 for cooperating with the nut 10310 in a threaded manner. The rotating shaft 10361 is connected with the threaded rod 10362 through the shaft coupling 10312, and the rotating shaft 10361, the threaded rod 10362 and the shaft coupling 10312 are all common parts available on the market, and are easy to obtain and assemble. In other embodiments of the present application, the rotating shaft assembly 1036 can be an integral shaft, for example, an external thread is machined on the rotating shaft 10361 for cooperating with the nut 10310 in a threaded manner.

[0081] As shown in FIG. 1, Figure 5 , Figure 8 and Figure 9As shown, in one embodiment of the present application, one end of the connecting shaft 1039 is fixedly connected with a connecting disc 10313, the connecting disc 10313 is fixedly connected with the nut 10310, the connecting disc 10313 is provided with a guide rod 10314, and the guide rod 10314 is in sliding fit with the winding needle support plate 106.

[0082] Specifically, one end of the connecting shaft 1039 is fixedly connected with the connecting disc 10313, and the connecting disc 10313 is fixedly connected with the nut 10310 by interference fit, welding or the like, which can make a distance exist between the end surface of the nut 10310 and the end surface of the connecting shaft 1039, and the distance allows the nut 10310 to move along its axis without collision with the threaded rod 10362. At the same time, the guide rod 10314 on the connecting disc 10313 passes through the through hole on the winding needle support plate 106, and the guide rod 10314 is in sliding fit with the winding needle support plate 106, which ensures the connecting shaft 1039 to move smoothly along its axial direction, and further ensures the nut 10310 to move smoothly. In other embodiments of the present application, the nut 10310 can be directly fixed at one end of the connecting shaft 1039, and the size of the nut 10310 itself allows a certain relative movement space between the nut 10310 and the threaded rod 10362, or the nut 10310 can be welded to the side surface of the connecting shaft 1039, so that the axis of the nut 10310 is parallel to the axis of the connecting shaft 1039.

[0083] As shown in the figure, Figures 6 to 9 As shown in the embodiment of the present application, the other end of the connecting shaft 1039 is provided with a roller 10311, and the roller 10311 abuts against the cam curved surface 1071.

[0084] Specifically, the other end of the connecting shaft 1039 is the abutting end of the cam curved surface 1071, but does not directly abut against the cam curved surface 1071, but indirectly abuts against the cam curved surface 1071 through the roller 10311, which can convert the sliding friction between the connecting shaft 1039 and the cam curved surface 1071 into rolling friction, reduce the wear of the cam curved surface 1071, ensure the overturning precision of the suction accessory 1034, and thus ensure the position precision of the first pole piece 203.

[0085] As shown in the figure, Figure 6 and Figure 10 As shown, the cam 107 is provided with a track groove 1072, the roller 10311 can roll in the track groove 1072, and the cam curved surface 1071 is formed on the side wall of the track groove 1072.

[0086] Specifically, in one embodiment of the present application, the cam 107 is processed with a track groove 1072, one or two sidewalls of which serve as the cam surface 1071. The roller 10311 rolls in the track groove 1072, which can limit the roller 10311 during the revolution of the connecting shaft 1039, preventing the abnormal jumping of the connecting shaft 1039 from causing the unstable process of the suction and separation of the first pole piece 203 by the suction member 1034. In other embodiments of the present application, the cam surface 1071 can also be a top surface of the cam 107 without the need of processing the track groove 1072.

[0087] As shown in Figure 5 , Figure 6 and Figure 10 , the battery cell winding device in the embodiment of the present application further comprises a fixing plate 108. The cam 107 is provided with a waist-shaped hole 1073, and a fastener is fastened to the fixing plate 108 through the waist-shaped hole 1073.

[0088] Specifically, the fixing plate 108 is installed on a fixing seat 109, so the fixing plate 108 is stationary, and the cam 107 is installed on the fixing plate 108, so the cam 107 is also stationary. The cam 107 is provided with a waist-shaped hole 1073, and a fastener is fastened to the fixing plate 108 through the waist-shaped hole 1073, thereby fastening the cam 107 to the fixing plate 108. The fixing plate 108 can also serve as a support plate of the support shaft 105. The advantage of using the waist-shaped hole 1073 is that the installation position of the cam 107 can be adjusted after loosening the fastener, thereby adjusting the position of the cam surface 1071 and finally adjusting the position of the overturning action of the suction member 1034, ensuring the accurate position of the suction and traction of the first pole piece 203 by the suction member 1034.

[0089] As shown in Figures 1 to 4 , in the embodiment of the present application, during the movement of the winding needle 102 from the winding station to the rubberizing station, the suction member 1034 of the suction mechanism 103 first overturns to approach the diaphragm 201 between the winding station and the rubberizing station, and then overturns to move away from the diaphragm 201 between the winding station and the rubberizing station.

[0090] Specifically, as shown in Figure 10As shown, in one embodiment of this application, the cam surface 1071 of the cam 107 is a curved surface, and the shape of this curved surface is directly related to the flipping of the adsorption member 1034. Those skilled in the art can design the curved surface shape of the cam surface 1071 based on the flipping motion trajectory of the adsorption member 1034. In the embodiments of this application, the surface shape of the cam surface 1071 needs to satisfy the following: during the process of the first winding needle 1021 moving from the winding station to the adhesive application station as the support shaft 105 revolves, the adsorption member 1034 of the third adsorption mechanism 1033 first flips from the second position (a position away from the diaphragm 201 between the winding station and the adhesive application station) to the first position (a position close to the diaphragm 201 between the winding station and the adhesive application station), so that the adsorption member 1034 can approach the first electrode 203 and adsorb it. Then the adsorption member 1034 flips from the first position to the second position, and the adsorption member 1034 pulls the first electrode 203 away from the diaphragm 201 between the winding station and the adhesive application station. In another embodiment of this application, the operation of a separate drive mechanism (e.g., a motor or cylinder) can be controlled so that as the winding needle 102 moves from the winding station to the adhesive application station, the adsorption member 1034 of the adsorption mechanism 103 first approaches the diaphragm 201 between the winding station and the adhesive application station, and then moves away from the diaphragm 201 between the winding station and the adhesive application station.

[0091] like Figures 1 to 4 As shown in the embodiments of this application, during the movement of the winding needle 102 from the winding station to the adhesive application station, only the adsorption member 1034 located between the winding station and the adhesive application station flips.

[0092] Specifically, in the present embodiment, three winding needles 102 and three suction mechanisms 103 are shown, namely a first winding needle 1021, a second winding needle 1022 and a third winding needle 1023, a first suction mechanism 1031, a second suction mechanism 1032 and a third suction mechanism 1033. Still taking the first winding needle 1021 and the third suction mechanism 1033 as examples, in the revolution process of the support shaft 105, after the support shaft 105 rotates by a certain angle, the first winding needle 1021 reaches the rubberizing station from the winding station, while the third suction mechanism 1033 reaches between the winding station and the rubberizing station. In this process, only the suction member 1034 of the third suction mechanism 1033 flips, from the second position to the first position and then returns to the second position, while the suction members 1034 of the first suction mechanism 1031 and the second suction mechanism 1032 do not flip. This can be achieved by making the position of the cam surface 1071 abutted by the connecting shaft 1039 of the first suction mechanism 1031 and the second suction mechanism 1032 in the revolution process a plane. In other words, in the entire cam surface 1071 of the cam 107, a part is a curved surface and the other part is a plane. In this way, the connecting shaft 1039 can drive the suction member 1034 to flip at different positions of the curved surface, while not driving the suction member 1034 to flip at different positions of the plane. Alternatively, a separate motor or cylinder can be used as a driving mechanism, and by controlling the action of the driving mechanism, only the suction member 1034 located between the winding station and the rubberizing station can be flipped, while the suction members 1034 at other positions cannot be flipped. The beneficial effect of this configuration is that the support shaft 105 only needs to drive one suction member 1034 in the revolution process, and the remaining suction members 1034 that do not suck the first pole piece 203 will not be driven, saving driving power and avoiding interference with other mechanisms between the winding station and the discharging station, and between the rubberizing station and the discharging station.

[0093] As shown in Figures 1 to 4 The present application also provides an electric core winding equipment 1, comprising the electric core winding device 100 according to any one of the preceding embodiments. The electric core winding equipment 1 can deliver the separator 201, the first pole piece 203 and the second pole piece 202 to the winding needle 102 through the unwinding mechanism, the sheet inserting mechanism and the like, so as to realize the winding, rubberizing and discharging of the electric core 200. The electric core winding equipment 1 adopts the electric core winding device 100, thereby ensuring the production quality of the electric core 200.

[0094] The differences between the embodiments are mainly described above. The different optimization features of the 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, the details are not described here.

[0095] While certain embodiments of the application have been described by way of example, it should be appreciated that those skilled in the art can certainly make modifications to the described embodiments without departing from the scope and spirit of the application. The scope of the application is defined in the accompanying claims.

Claims

1. A battery cell winding device (100), characterized in that, The application relates to a winding device for winding a first pole piece (203) and a diaphragm (201) into a winding position, and comprises the following parts: a turret mechanism (101) provided with a winding needle (102), the turret mechanism (101) can rotate to make the winding needle (102) be in the winding position or a rubber coating position; an adsorption mechanism (103) for adsorbing the first pole piece (203); a driving mechanism for driving the adsorption mechanism (103) to move to adsorb the first pole piece (203) between the winding position and the rubber coating position, and to pull the first pole piece (203) away from the diaphragm (201) between the winding position and the rubber coating position.

2. The cell winding device (100) according to claim 1, characterized in that, The application further comprises a cutter mechanism (104) arranged opposite to the adsorption position of the adsorption mechanism (103), the cutter mechanism (104) is located on the side of the diaphragm (201) far away from the first pole piece (203), and the cutter mechanism (104) is used for cutting the diaphragm (201).

3. The cell winding apparatus according to claim 1, characterized by, The turret mechanism (101) is provided with at least two winding needles (102), and the adsorption mechanism (103) is arranged between the two adjacent winding needles (102).

4. The cell winding apparatus according to claim 1, characterized by, The turret mechanism (101) comprises a support shaft (105) and a winding needle support plate (106), the support shaft (105) can rotate, the support shaft (105) is fixedly connected with the winding needle support plate (106), the winding needle support plate (106) is used for mounting the winding needle (102), and the adsorption mechanism (103) is mounted on the support shaft (105) or the winding needle support plate (106).

5. The cell winding apparatus according to claim 4, characterized by, The driving mechanism is mounted on the support shaft (105), or the driving mechanism drives the support shaft (105) to rotate, the support shaft (105) is connected with a transmission mechanism, the transmission mechanism is connected with the adsorption mechanism (103) to convert the rotation of the support shaft (105) into the movement of the adsorption mechanism (103).

6. The cell winding apparatus according to claim 5, characterized by The adsorption mechanism (103) comprises: an adsorption part (1034) provided with an adsorption hole (1035); a rotating shaft assembly (1036) fixedly connected with the adsorption part (1034); a support (1038) rotationally matched with the rotating shaft assembly (1036), and the support (1038) is fixedly connected with the support shaft (105).

7. The cell winding apparatus according to claim 6, characterized by, The driving mechanism mounted on the support shaft (105) drives the rotating shaft assembly (1036) to rotate to make the adsorption part (1034) overturn, or the driving mechanism drives the support shaft (105) to rotate, the support shaft (105) is connected with the transmission mechanism, the transmission mechanism is connected with the rotating shaft assembly (1036) to convert the rotation of the support shaft (105) into the rotation of the rotating shaft assembly (1036).

8. The cell winding apparatus according to claim 7, characterized by, The transmission mechanism comprises: a connecting shaft (1039) connected with the rotating shaft assembly (1036) at one end; a cam (107) provided with a cam curved surface (1071); The support shaft (105) drives the connecting shaft (1039) through the support base (1038) and the rotating shaft assembly (1036). When the support shaft (105) rotates, the cam surface (1071) abuts against the other end of the connecting shaft (1039) to drive the connecting shaft (1039) to rotate the rotating shaft assembly (1036).

9. The cell winding apparatus according to claim 8, characterized by, One end of the connecting shaft (1039) is provided with a nut (10310) which is threadedly connected with the rotating shaft assembly (1036). When the support shaft (105) rotates, the cam surface (1071) abuts against the other end of the connecting shaft (1039) to move the nut (10310). The movement of the nut (10310) is converted into the rotation of the rotating shaft assembly (1036) through the threaded connection.

10. The battery cell winding apparatus according to claim 9, wherein The rotating shaft assembly (1036) comprises a rotating shaft (10361) and a threaded rod (10362). The threaded rod (10362) is threadedly connected with the nut (10310), and the rotating shaft (10361) is connected with the threaded rod (10362) through a shaft coupling (10312).

11. The battery cell winding apparatus according to claim 9, wherein One end of the connecting shaft (1039) is fixedly connected with a connecting disc (10313) which is fixedly connected with the nut (10310). The connecting disc (10313) is provided with a guide rod (10314) which is slidably connected with the needle support plate (106).

12. The battery cell winding apparatus according to claim 8, wherein The other end of the connecting shaft (1039) is provided with a roller (10311) which abuts against the cam surface (1071). The cam (107) is provided with a track groove (1072) in which the roller (10311) can roll. The cam surface (1071) is formed on the side wall of the track groove (1072).

13. The battery cell winding apparatus of claim 8, wherein, A fixing plate (108) is further provided. The cam (107) is provided with a waist-shaped hole (1073) through which a fastener is fastened to the fixing plate (108).

14. The cell winding apparatus according to claim 1, characterized by, During the movement of the needle (102) from the winding station to the rubber applying station, the suction member (1034) of the suction mechanism (103) first approaches the diaphragm (201) between the winding station and the rubber applying station, and then moves away from the diaphragm (201) between the winding station and the rubber applying station.

15. The cell winding apparatus according to claim 1, characterized by, During the movement of the needle (102) from the winding station to the rubber applying station, only the suction member (1034) of the suction mechanism (103) between the winding station and the rubber applying station is flipped.

16. An electrode core winding apparatus (1) characterized by comprising: The electric cell winding device comprises the electric cell winding device according to any one of claims 1 to 15.

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