CN219626721U - Winding needle driving device and battery core winding equipment - Google Patents

Abstract

The utility model relates to a winding needle driving device and electric core winding equipment. The first driving component and the second driving component are both arranged on the first supporting shaft. The first driving component drives the winding needle to rotate, so that the battery cell can be wound. After the battery core is wound, the battery core can be clamped, and the second driving assembly drives the first driving assembly and the winding needle to retract until the winding needle is retracted from the battery core, so that the material removal of the battery core can be realized. It can be seen that there is no need to drive the cell to move within the cell winding device during the stripping process. Moreover, the first driving component and the second driving component are both arranged on the first supporting shaft, so that the occupied space is smaller, and the operation space is larger when the battery cell is stripped. Therefore, the winding needle driving device and the battery cell winding equipment can conveniently remove the battery cell.

Description

Winding needle driving device and battery core winding equipment

Technical Field

The utility model relates to the technical field of lithium battery equipment, in particular to a winding needle driving device and electric core winding equipment.

Background

The winding process is a common process for preparing the battery core in the production process of the lithium battery, and the material strips such as the pole pieces, the diaphragms and the like for preparing the battery core are clamped by the winding needle first and then wound along with the winding needle to form the battery core. In the existing winding equipment, the winding needle is generally rotatably installed on the turntable, and the winding needle can revolve under the drive of the turntable and can rotate around the axis of the winding needle under the drive of the driving device.

After the winding of the battery cell is completed, the battery cell needs to be removed from the winding needle. At present, it is common practice to hold the battery cell first and then move the battery cell along the axial direction of the winding needle until the winding needle is withdrawn from the battery cell. However, the winding device has a compact structure, and particularly when preparing a cell with a larger diameter, the cell can move in a smaller space after winding, so that the stripping is inconvenient.

Disclosure of Invention

In view of the above, it is necessary to provide a winding needle driving device and a battery cell winding apparatus capable of facilitating the removal of the battery cell.

A winding needle driving device comprising:

a frame;

the first support shaft is rotatably arranged on the frame;

the first driving assembly is slidably arranged on the first supporting shaft along the axial direction of the first supporting shaft, the winding needle can be arranged at the rotating end of the first driving assembly, and the first driving assembly can drive the winding needle to rotate around the axial line parallel to the axial direction of the first supporting shaft; and

The second driving assembly is fixed on the first supporting shaft and is in transmission connection with the first driving assembly, and the second driving assembly can drive the first driving assembly to axially slide along the first supporting shaft.

In one embodiment, the first driving assembly includes a support rotating shaft and a first motor, the support is slidably mounted on the first supporting shaft along an axial direction of the first supporting shaft, the rotating shaft is mounted on the support and can rotate around an axis parallel to the axial direction of the first supporting shaft, and the first motor is fixed on the support and is in transmission connection with the rotating shaft, and the winding needle can be mounted on the rotating shaft.

In one embodiment, the output shaft of the first motor is in transmission connection with the rotating shaft through a transmission belt.

In one embodiment, the second driving assembly comprises a second motor, a screw rod and a nut, wherein the screw rod is in transmission connection with the second motor, and the nut is fixed on the first driving assembly and in threaded fit with the screw rod.

In one embodiment, the device further comprises a clamping assembly which is opposite to the first driving assembly along the axial direction of the first supporting shaft, the clamping assembly can synchronously rotate along with the first supporting shaft, the clamping assembly comprises a telescopic driving piece and a clamping shaft, the clamping shaft can rotate around an axial line parallel to the axial direction of the first supporting shaft, and the telescopic driving piece can drive the clamping shaft to stretch and retract relative to the first driving assembly, so that the clamping shaft is sleeved on or separated from the outer side of a winding needle installed on the first driving assembly.

In one embodiment, the clamping assembly further comprises a housing and a shaft sleeve slidably mounted to the housing along an axial direction of the first support shaft, the clamping shaft is rotatably mounted to the shaft sleeve, and the telescopic driving member is fixed to the housing and is in driving connection with the shaft sleeve.

In one embodiment, the device further comprises a second support shaft coaxially arranged with the first support shaft, the second support shaft is fixedly connected with the first support shaft and rotatably installed on the frame, a fixing plate is fixedly arranged on the second support shaft, and the clamping assembly is arranged on the fixing plate.

In one embodiment, a plurality of first driving assemblies are arranged along the circumferential direction of the first supporting shaft at intervals, each first driving assembly is correspondingly provided with one second driving assembly, and the first supporting shaft rotates and can drive the plurality of first driving assemblies to sequentially pass through a winding station and a blanking station.

In one embodiment, the device further comprises a third driving assembly, the third driving assembly comprises a bearing seat, a first gear and a second gear, the bearing seat is fixed on the frame, the first supporting shaft is rotatably installed on the bearing seat, the first gear and the first supporting shaft are coaxially arranged and fixedly connected, and the second gear is rotatably installed on the bearing seat and meshed with the first gear.

A cell winding apparatus comprising:

a winding needle driving device according to any one of the above preferred embodiments; and

And the winding needle is arranged at the rotating end of the first driving assembly.

According to the winding needle driving device and the battery core winding equipment, the first driving assembly drives the winding needle to rotate so as to wind the battery core. After the battery core is wound, the battery core can be clamped, and the second driving assembly drives the first driving assembly and the winding needle to retract until the winding needle is retracted from the battery core, so that the material removal of the battery core can be realized. It can be seen that there is no need to drive the cell to move within the cell winding device during the stripping process. Moreover, the first driving component and the second driving component are both arranged on the first supporting shaft, so that the occupied space is smaller, and the operation space is larger when the battery cell is stripped. Therefore, the winding needle driving device and the battery cell winding equipment can conveniently remove the battery cell.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a needle driving device according to a preferred embodiment of the present utility model;

FIG. 2 is a top view of the needle roller drive of FIG. 1;

FIG. 3 is a schematic view of a part of the needle driving device shown in FIG. 1;

FIG. 4 is a schematic view of a first driving assembly of the needle roller driving device shown in FIG. 1;

FIG. 5 is a schematic view of the clamping assembly of the needle roller drive of FIG. 1;

FIG. 6 is a cross-sectional view of the clamping assembly of FIG. 5 taken along line A-A;

fig. 7 is a schematic structural view of a third driving assembly in the winding needle driving device shown in fig. 1.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, the present utility model provides a battery cell winding apparatus and a winding needle driving device 100. The cell winding device includes a winding needle driving device 100 and a winding needle (not shown).

The winding needle is of a strip-shaped structure and can clamp the diaphragm and the pole piece for winding the battery cell. Specifically, the winding needle includes two opposing outer needles (not shown) and two opposing inner needles (not shown), the inner needles being located between the two outer needles. When the winding of the cell is performed, the two inner needles are close to each other to clamp the membrane and/or the pole piece, while the two outer needles are far away from each other. The winding needle is mounted on the winding needle driving device 100 and can rotate around its own axis by the driving of the winding needle driving device 100 to wind the battery cell.

Referring to fig. 2 and fig. 3 together, the needle driving device 100 according to the preferred embodiment of the utility model includes a frame 110, a first supporting shaft 120, a first driving component 130 and a second driving component 140.

The frame 110 is supported and may be a metal frame structure. The first support shaft 120 is rotatably mounted to the frame 110. Specifically, the frame 110 is formed with a support plate 111, and the first support shaft 120 can be rotatably mounted on the support plate 111 through a bearing.

The first driving assembly 130 is slidably mounted to the first supporting shaft 120 in an axial direction of the first supporting shaft 120, and a winding needle can be mounted to a rotating end of the first driving assembly 130. As shown in fig. 1, for example, the first support shaft 120 extends in the left-right direction. Further, the first driving assembly 130 can drive the winding needle to rotate about an axis parallel to the axial direction of the first support shaft 120.

Referring to fig. 4, in the present embodiment, the first driving assembly 130 includes a support 131, a rotation shaft 132 and a first motor 133, the support 131 is slidably mounted on the first support shaft 120 along an axial direction of the first support shaft 120, the rotation shaft 132 is mounted on the support 131 and can rotate around an axis parallel to the axial direction of the first support shaft 120, and the first motor 133 is fixed on the support 131 and is in transmission connection with the rotation shaft 132, and the winding needle can be mounted on the rotation shaft 132.

The surface of the first support shaft 120 is provided with a guide rail (not shown) extending in the axial direction, and the bracket 131 may be mounted on the guide rail by a slider. The rotating shaft 132 is provided with a fixing structure (not shown) capable of fixing the winding needle, and the winding needle is generally detachably mounted on the rotating shaft 132, so that the winding needle can be replaced according to different requirements, and the battery cells with different diameters can be prepared. The first motor 133 drives the rotation shaft 132 to rotate, and the rotation shaft 132 can drive the winding needle to rotate, so as to wind the battery cell.

Further, in the present embodiment, the output shaft of the first motor 133 is in driving connection with the rotation shaft 132 through a driving belt 134. It can be seen that the first motor 133 and the rotating shaft 132 directly connected to each other transmit torque, which makes the structure simpler and reduces energy loss.

The second driving assembly 140 is fixed on the first supporting shaft 120 and is in transmission connection with the first driving assembly 130, and the second driving assembly 140 can drive the first driving assembly 130 to slide along the axial direction of the first supporting shaft 120. When the second driving assembly 140 drives the first driving assembly 130 to slide, the winding needle mounted on the first driving assembly 130 will also move along the axial direction of the first supporting shaft 120.

In this embodiment, the second driving assembly 140 includes a second motor (not shown), a screw (not shown), and a nut (not shown). The screw rod is in transmission connection with the second motor, and the nut is fixed on the first driving assembly 130 and is in threaded fit with the screw rod.

Specifically, the screw rod extends along the axial direction of the first support shaft 120, and can be connected with the output shaft of the second motor through a belt, a gear and a coupling, and can rotate around the axis of the screw rod under the driving of the second motor. The nut in this embodiment is specifically fixedly mounted on the support 131. When the screw rod rotates, the nut is forced to move along the axial direction of the screw rod, so that the first driving assembly 130 is driven by the nut to slide along the axial direction of the first supporting shaft 120.

It should be noted that, in other embodiments, the cylinder may be directly used to drive the first driving assembly 130 to slide along the axial direction of the first support shaft 120.

In preparing the cell, the second drive assembly 140 first drives the first drive assembly 130 and the winding pin thereon (rightward in fig. 1) to extend. Then, the diaphragm and/or the pole piece is clamped between the two inner needles of the winding needle and clamped, and the two outer needles are separated from each other and opened. The first driving component 130 drives the winding needle to rotate around the axis of the winding needle, and the diaphragm and the pole piece can be wound around the periphery of the winding needle. After the battery core is wound, the battery core is clamped by using a clamping needle (not shown), two outer needles of the winding needle are close to each other, two inner needles are far away from each other, and the second driving assembly 140 drives the first driving assembly 130 and the winding needle (leftwards in fig. 1) to retract until the winding needle is retracted from the battery core, so that the material release of the battery core can be realized. Therefore, the battery core is not required to be driven to move left and right in the battery core winding equipment in the process of removing the battery core, and the operation is convenient.

In addition, since the first driving assembly 130 is mounted on the outer surface of the first supporting shaft 120, when the winding needle with a larger diameter needs to be replaced, the size of the first supporting shaft 120 does not need to be adjusted, so that the space occupied by the winding needle driving device 100 can be effectively reduced, and the available operating space inside the cell winding device can be increased. Further, since the first support shaft 120 does not need to be adjusted when the winding needle is replaced, the compatibility of the winding needle driving device 100 is higher.

Referring to fig. 1 again, in the present embodiment, a plurality of first driving assemblies 130 are disposed along the circumferential direction of the first supporting shaft 120 at intervals, each first driving assembly 130 is correspondingly provided with a second driving assembly 140, and the first supporting shaft 120 rotates to drive the plurality of first driving assemblies 130 to sequentially pass through the winding station and the blanking station.

The rotating ends of the first driving components 130 can be provided with winding needles, so that a plurality of winding needles can be distributed along the circumferential direction of the first supporting shaft 120. Specifically, the winding station and the blanking station are disposed at intervals around the circumference of the first support shaft 120. In the winding station, the diaphragm and/or the pole piece can be clamped on a winding needle, and the winding needle can rotate around the axis of the winding needle under the drive of the first driving component 130, so that the winding of the battery cell is realized; and in the blanking station, the battery core which is processed can be taken down from the winding needle.

When the winding needle in the winding station completes winding of the battery cell, the first supporting shaft 120 rotates to drive the wound battery cell to be transferred to the blanking station to prepare for blanking operation, and the winding needle originally positioned in the blanking station is transferred to the winding station after blanking, and the next battery cell can be wound after being filled with the diaphragm and/or the pole piece. Therefore, the winding and blanking operations for the battery cells can be performed at the same time at different stations, so that the production efficiency of the battery cell winding equipment can be improved.

Referring to fig. 7, in the present embodiment, the needle driving device 100 further includes a third driving assembly 180, and the third driving assembly 180 includes a bearing seat 181, a first gear 182 and a second gear 183. The bearing housing 181 is fixed to the frame 110, and the first support shaft 120 is rotatably installed to the bearing housing 181. The first gear 182 is coaxially disposed with and fixedly coupled to the first support shaft 120, and the second gear 183 is rotatably mounted to the bearing housing 181 and engaged with the first gear 182.

The bearing seat 181 may be fastened to the frame 110 by a screw, and the second gear 183 may be in driving connection with a driving member such as a motor (not shown). The motor drives the second gear 183 to rotate, thereby enabling the first support shaft 120 to rotate through the first gear 182. The third driving assembly 180 is compact and convenient to install. Further, the diameter of the second gear 183 is smaller than that of the first gear 182 in the present embodiment, so that a larger gear ratio can be obtained, thereby increasing torque.

Referring to fig. 5 and fig. 6 together, in the present embodiment, the winding needle driving device 100 further includes a clamping assembly 150 disposed opposite to the first driving assembly 130 along the axial direction of the first supporting shaft 120, and the clamping assembly 150 can rotate synchronously with the first supporting shaft 120. The clamping assembly 150 includes a telescopic driving member 151 and a clamping shaft 152, the clamping shaft 152 can rotate around an axis parallel to the axial direction of the first support shaft 120, and the telescopic driving member 151 can drive the clamping shaft 152 to telescope relative to the first driving assembly 130, so that the clamping shaft 152 is sleeved or separated from the outer side of the winding needle mounted on the first driving assembly 130.

The telescopic driving member 151 is generally a cylinder, and the clamping shaft 152 is hollow. When the clamping shaft 152 is sleeved with the winding needle, the winding needle can be limited so that two inner portions of the winding needle can be clamped against the diaphragm and the pole piece, and two outer needles can be opened. Moreover, the clamping shaft 152 can rotate along with the winding needle and rotate along with the first supporting shaft 120, so that the winding needle can be supported at one end far away from the first driving assembly 130 in the process of winding the battery cell by the winding needle, and the winding needle can be kept better stable. When the clamping shaft 152 is separated from the winding needle, the two inner needles of the winding needle can be separated from each other, and the two outer needles can be close to each other, so that the battery cell is convenient to take down.

Specifically, the clamping assemblies 150 are also provided in plurality and are disposed in one-to-one correspondence with the first driving assemblies 130. The plurality of clamping assemblies 150 can rotate with the first support shaft 120 and can thus always maintain alignment with the corresponding first driving assembly 130 along the axial direction of the first support shaft 120.

Referring to fig. 2 and 3 again, in the present embodiment, the needle driving device 100 further includes a second support shaft 160 coaxially disposed with the first support shaft 120, the second support shaft 160 is fixedly connected with the first support shaft 120 and rotatably mounted on the frame 110, a fixing plate 170 is fixedly disposed on the second support shaft 160, and the clamping assembly 150 is disposed on the fixing plate 170.

Specifically, the frame 110 further includes support blocks 112 disposed opposite to the support plate 111 along the axial direction of the first support shaft 120, where the support blocks 112 may be fixedly connected to the support plate 111 through connecting rods 113. The end of the second support shaft 160 remote from the first support shaft 120 is rotatably mounted on the support block 112. The rotation of the first supporting shaft 120 drives the second supporting shaft 160 to rotate, so as to drive the clamping assembly 150 on the fixing plate 170 to rotate synchronously with the first supporting shaft 120 and the first driving assembly 120.

In this embodiment, the clamping assembly 150 further includes a housing 153 and a sleeve 154, the sleeve 154 is slidably mounted on the housing 153 along the axial direction of the first support shaft 120, the clamping shaft 152 is rotatably mounted on the sleeve 154, and the telescopic driving member 151 is fixed on the housing 153 and is in driving connection with the sleeve 154.

Specifically, the housing 153 and the sleeve 154 may be connected by a rail, a chute, or the like, and the clamping shaft 152 may be mounted in the sleeve 154 by a bearing. The telescopic driving member 151 slides along the housing 153 through the driving shaft sleeve 154, so as to drive the clamping shaft 152 to retract relative to the first driving assembly 130. While the first drive assembly 130 rotates the needle, the clamping shaft 152 rotates within the sleeve 154 to maintain synchronization with the needle.

The winding needle driving device 100 and the battery cell winding device can perform battery cell winding by driving the winding needle to rotate by the first driving component 130. After the winding of the battery cell is completed, the battery cell can be clamped, and the second driving assembly 140 drives the first driving assembly 130 and the winding needle to retract until the winding needle is retracted from the battery cell, so that the material removal of the battery cell can be realized. It can be seen that there is no need to drive the cell to move within the cell winding device during the stripping process. Moreover, the first driving assembly 130 and the second driving assembly 140 are both mounted on the first supporting shaft 120, which occupies a smaller space, so that the operation space is larger when the battery cell is stripped. Therefore, the winding needle driving device 100 and the battery cell winding equipment can conveniently remove the battery cell.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A winding needle driving device, comprising:

a frame;

the first support shaft is rotatably arranged on the frame;

the first driving assembly is slidably arranged on the first supporting shaft along the axial direction of the first supporting shaft, the winding needle can be arranged at the rotating end of the first driving assembly, and the first driving assembly can drive the winding needle to rotate around the axial line parallel to the axial direction of the first supporting shaft; and

The second driving assembly is fixed on the first supporting shaft and is in transmission connection with the first driving assembly, and the second driving assembly can drive the first driving assembly to axially slide along the first supporting shaft.

2. The needle roller driving device according to claim 1, wherein the first driving assembly includes a holder slidably mounted to the first support shaft in an axial direction of the first support shaft, a rotation shaft mounted to the holder and rotatable about an axis parallel to the axial direction of the first support shaft, and a first motor fixed to the holder and in driving connection with the rotation shaft, the needle roller being mountable to the rotation shaft.

3. The winding needle driving device according to claim 2, wherein the output shaft of the first motor is in driving connection with the rotating shaft through a driving belt.

4. The needle roller driving device according to claim 1, wherein the second driving assembly comprises a second motor, a screw rod and a nut, the screw rod is in transmission connection with the second motor, and the nut is fixed on the first driving assembly and is in threaded fit with the screw rod.

5. The winding needle driving device according to claim 1, further comprising a clamping assembly disposed opposite to the first driving assembly in an axial direction of the first supporting shaft, and the clamping assembly is capable of rotating synchronously with the first supporting shaft, the clamping assembly comprising a telescopic driving member and a clamping shaft, the clamping shaft being rotatable about an axis parallel to the axial direction of the first supporting shaft, the telescopic driving member being capable of driving the clamping shaft to telescope with respect to the first driving assembly to allow the clamping shaft to be sleeved or separated from an outside of a winding needle mounted to the first driving assembly.

6. The needle roller drive of claim 5, wherein the clamping assembly further comprises a housing and a sleeve slidably mounted to the housing in an axial direction of the first support shaft, the clamping shaft rotatably mounted to the sleeve, and the telescoping drive member secured to the housing and drivingly connected to the sleeve.

7. The needle roller driving device according to claim 5, further comprising a second support shaft coaxially disposed with the first support shaft, wherein the second support shaft is fixedly connected with the first support shaft and rotatably mounted on the frame, a fixing plate is fixedly disposed on the second support shaft, and the clamping assembly is disposed on the fixing plate.

8. The winding needle driving device according to any one of claims 1 to 7, wherein a plurality of first driving assemblies are arranged at intervals along the circumferential direction of the first supporting shaft, each first driving assembly is provided with a corresponding second driving assembly, and the first supporting shaft rotates to drive the plurality of first driving assemblies to sequentially pass through a winding station and a blanking station.

9. The needle roller driving device according to claim 1, further comprising a third driving assembly, wherein the third driving assembly comprises a bearing seat, a first gear and a second gear, the bearing seat is fixed on the frame, the first supporting shaft is rotatably mounted on the bearing seat, the first gear is coaxially arranged and fixedly connected with the first supporting shaft, and the second gear is rotatably mounted on the bearing seat and meshed with the first gear.

10. A cell winding apparatus, comprising:

the winding needle driving device according to any one of claims 1 to 9; and

And the winding needle is arranged at the rotating end of the first driving assembly.