CN211017269U - Cell winding device - Google Patents

Abstract

The utility model relates to an electricity core take-up device, including winding mechanism, winding mechanism includes: each coiling needle assembly comprises a coiling needle hanging plate, a coiling needle main shaft rotatably arranged on the coiling needle hanging plate, and a coiling needle connected with the coiling needle main shaft, and the two coiling needles can be mutually matched to form a coiling shaft for coiling the battery cell; and the driving assembly is respectively in driving connection with the two winding needle main shafts, and the two winding needle main shafts can synchronously rotate under the driving of the driving assembly. The utility model discloses an electricity core coiling mechanism can be applicable to the production of large-scale battery electricity core well, guarantees that battery electricity core has higher coiling quality.

Description

Cell winding device

technical field

The utility model relates to the technical field of battery production equipment, in particular to a battery core winding device.

Background technique

The traditional battery cell winding device usually uses a single-axis and unilateral driving needle to perform the battery cell winding action during the battery cell winding production process. This kind of battery cell winding device is only suitable for small battery cells. Winding production, for large battery cells, when the diameter of the battery cells increases to a certain value, it is difficult to ensure that the battery cells maintain a uniform constant tension during the winding process, and it is easy to cause the battery cells to be wound flat. Uneven degrees, poor stability and other problems, thus affecting the winding quality of battery cells.

Utility model content

Based on this, it is necessary for the traditional battery cell winding device to ensure that the battery cells maintain a uniform constant tension during the winding process when producing large battery cells, and it is easy to cause uneven winding flatness of the battery cells. Problems such as poor stability and the like are provided, and a battery cell winding device is provided, which can be well applied to the production of large battery cells and ensures that the battery cells have high winding quality.

An electric core winding device, comprising a winding mechanism, the winding mechanism comprising:

Two sets of rolling needle assemblies, each of which includes a rolling needle hanging plate, a rolling needle main shaft rotatably mounted on the rolling needle hanging board, and a rolling needle connected to the rolling needle main shaft. the winding needles can cooperate with each other to form a winding shaft for winding the cell; and

A drive assembly is respectively drivingly connected with the two needle winding spindles, and the two needle winding spindles can rotate synchronously under the driving of the driving assembly.

When the above-mentioned cell winding device is in operation, the positive and negative electrode sheets of the cell and the diaphragm material are sandwiched between two winding needles, and the two winding needle spindles are driven to rotate synchronously by the driving assembly, thereby driving the two winding needles. It rotates synchronously to perform the winding action, so as to realize the winding of the battery cells. Compared with the traditional battery core winding device which adopts single-axis and single-side drive for winding, the winding mechanism of the battery core winding device of the present invention can realize a set of driving components to realize the double-drive winding work of double winding needles. , so that the winding driving force of the battery cells can be evenly distributed on the bilateral winding needles, so that when winding the battery cells (especially for large-diameter battery cells), the battery cells can be guaranteed during the winding process. It maintains a uniform constant tension in the middle, so that the battery cells have better winding flatness and stability, which can effectively improve the winding quality of the battery cells, and can be very suitable for the production of large battery cells.

In one embodiment, each of the needle winding assemblies further includes a needle winding sleeve sleeved on the needle winding spindle, the needle winding sleeve is rotatably connected to the needle winding hanging plate, so The needle winding spindle is drivingly connected with the needle winding sleeve, and the drive assembly includes a rotary driving member, a linkage main shaft and two sets of synchronous transmission units, the rotary driving member is drivingly connected with the linkage main shaft, and the synchronous transmission unit The two ends of the interlocking main shaft are respectively connected with the corresponding needle rolling bushes through the synchronous transmission unit.

In one embodiment, the synchronous transmission unit includes a first synchronous wheel, a second synchronous wheel and a synchronous belt, the synchronous belt is wound around the first synchronous wheel and the second synchronous wheel, the The first synchronizing wheel is sleeved on the linkage main shaft, and the second synchronizing wheel is sleeved on the needle winding sleeve.

In one embodiment, each of the winding needles includes a connecting section and a winding section, the connecting section is connected to the main shaft of the winding needle, and the winding section is recessed radially relative to the connecting section to form a concave section. A groove is provided at the adjoining part of the winding section and the connecting end with a step.

In one embodiment, each of the needle winding assemblies further includes a first linear driving member, the needle winding spindle is slidably inserted into the needle winding sleeve in an axial direction, and the first linear driving member The wire driving member is drivingly connected with the needle winding main shaft, and the first linear driving member can drive the winding needle main shaft to slide in the axial direction, so as to drive the winding needle to be withdrawn from the battery core.

In one embodiment, each of the needle winding assemblies further includes a first linear guide rail and a needle withdrawal connecting plate, the first linear guide rail is parallel to the needle winding main shaft, and the needle withdrawal connecting plate is connected to The first linear guide rail is slidably connected, and the end of the needle winding spindle away from the winding needle is rotatably connected to the needle withdrawal connecting plate, and the needle withdrawal connecting plate is connected to the first linear driving member drive connection.

In one embodiment, the cell winding device further includes an auxiliary core removal mechanism, the auxiliary core removal mechanism includes a cell support assembly, and a drive module drivingly connected with the cell support assembly, the The drive module can drive the cell support assembly to move to an auxiliary core removal station, where the cell support assembly can hold the cell.

In one embodiment, the cell support assembly includes a support base, a finishing wheel rotatably connected to the support base, and a lift plate at the bottom of the support base, one side of the lift plate is connected to the bottom of the support base. The support base is rotatably connected, and the drive module includes a fixed frame, a lift drive member and a blanking ejector rod. The lifting plate is drivingly connected with the lifting plate, and the lifting driving member can drive the lifting plate to move down to the blanking station, where the blanking ejector pushes the support seat to the tilted state.

In one embodiment, a pressure sensor is provided on the cell support assembly, and an in-position sensor is provided on the needle winding hanger.

In one embodiment, the cell winding device further includes a material receiving mechanism, the material receiving mechanism is located on one side of the unloading station, and the material receiving mechanism includes a mounting bracket, which is arranged on the installation A cell receiving plate on the bracket, and a cell baffle provided on one side of the cell receiving plate, the side of the cell receiving plate away from the cell baffle is arranged close to the finishing wheel.

Description of drawings

1 is a schematic structural diagram of a cell winding device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the winding mechanism of the cell winding device in FIG. 1;

Fig. 3 is the partial structure schematic diagram of the winding mechanism in Fig. 2;

FIG. 4 is a schematic structural diagram of an auxiliary core-taking mechanism of the cell winding device in FIG. 1;

FIG. 5 is a schematic structural diagram of the material splicing mechanism of the cell winding device in FIG. 1;

Figure 6 is a schematic diagram of the cooperation between the auxiliary coring mechanism and the material receiving mechanism;

FIG. 7 is a schematic structural diagram of a winding needle of the cell winding device in FIG. 1 .

10. Frame, 11, Second linear guide, 12, Second linear drive, 13, Fixed plate, 14, Push plate, 15, Limit switch, 20, Winding mechanism, 21, Rolling needle assembly, 211, Needle rolling hanger, 2111, In-position sensor, 212, Rolling needle spindle, 213, Rolling needle, 2131, Connecting section, 2132, Winding section, 2133, Step, 214, Rolling needle bushing, 215, First linear drive Parts, 216, First linear guide, 217, Needle withdrawal connecting plate, 218, Needle withdrawal connecting block, 219, Slider, 22, Drive assembly, 221, Rotary drive piece, 222, Linkage spindle, 223, Coupling , 224, synchronous transmission unit, 2241, first synchronous wheel, 2242, second synchronous wheel, 2243, synchronous belt, 30, auxiliary coring mechanism, 31, support seat, 32, finishing wheel, 33, lifting plate, 34, Rotating shaft, 35, Fixing frame, 36, Lifting drive, 37, Ejector rod, 38, Guide shaft, 39, Pressure sensor, 40, Material receiving mechanism, 41, Mounting bracket, 42, Cell receiving plate, 43, Cell baffle, 100, cell.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the related drawings. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" 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. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," and similar expressions are used herein for illustrative purposes only. The "first" and "second" mentioned in the present utility model do not represent a specific quantity and order, but are only used for the distinction of names.

Please refer to FIG. 1 to FIG. 3 , a cell winding device includes a frame 10 and a winding mechanism 20 disposed on the frame 10 . The winding mechanism 20 includes a needle winding assembly 21 and a driving assembly 22 . There are two sets of the needle winding assemblies 21 , and the two sets of the needle winding assemblies 21 are oppositely arranged on the frame 10 . Each needle rolling assembly 21 includes a rolling needle hanging plate 211, a rolling needle main shaft 212 rotatably mounted on the rolling needle hanging plate 211, and a rolling needle 213 connected to the rolling needle main shaft 212, and the two rolling needles 213 can be overlapped with each other. to form a winding shaft for winding the battery core 100 . The driving assemblies 22 are respectively drivingly connected with the two needle winding spindles 212 , and the two winding needle spindles 212 can rotate synchronously under the driving of the driving assemblies 22 .

Specifically, the rack 10 is used to form the main body support and installation structure, and the rack 10 can be made of aluminum profiles or stainless steel. As shown in FIG. 2 , the two rolling needle hanging plates 211 are arranged opposite to each other, the two rolling needles 213 are located between the two rolling needle hanging plates 211 , and the two rolling needles 213 extend toward each other in the horizontal direction, and the two rolling needles 213 They can be overlapped with each other in the vertical direction, and the positive and negative electrodes of the battery cell 100 and the diaphragm material can be clamped by the cooperation of the two winding needles 213, and the driving assembly 22 can simultaneously drive the two winding needle spindles 212 to rotate synchronously, The needle winding spindle 212 can drive the winding needles 213 to rotate together. In this way, the winding action of the battery cell 100 can be realized through the synchronous rotation of the two winding needles 213 . The shape of the rolling pin 213 can be set according to the shape of the battery cell 100 to be produced, and a square rolling pin 213 or a circular rolling pin 213 can be selected.

When the above-mentioned battery core winding device is in operation, the positive and negative electrode sheets of the battery core 100 and the diaphragm material are sandwiched between the two winding needles 213, and the two winding needle spindles 212 are driven by the driving assembly 22 to rotate synchronously, and then The two winding needles 213 are driven to rotate synchronously to perform the winding action, so as to realize the winding of the battery cell 100 . Compared with the traditional cell winding device that adopts single-axis and single-side driving for winding, the winding mechanism 20 of the cell winding device of the present invention can realize a set of driving components 22 to realize the double driving of the double winding needles 213. Winding work, so that the winding driving force of the battery cell 100 can be evenly distributed on the bilateral winding needles 213. In this way, when winding the battery cell 100 (especially for the battery cell 100 with a large diameter), it can be guaranteed The battery cell 100 maintains a uniform constant tension during the winding process, so that the battery cell 100 has better winding flatness and stability, so that the winding quality of the battery cell 100 can be effectively improved, and the battery cell 100 can be well applied For the production of large battery cells 100.

Referring to FIG. 2, in one embodiment, each needle winding assembly 21 further includes a needle winding sleeve 214 sleeved on the needle winding spindle 212, and the needle winding sleeve 214 is rotatably connected to the needle winding hanging plate 211, The needle winding spindle 212 is drivingly connected with the needle winding sleeve 214. The driving assembly 22 includes a rotary driving member 221, a linkage main shaft 222 and two sets of synchronous transmission units 224. The needle shaft sleeves 214 are arranged in a one-to-one correspondence, and two ends of the linkage main shaft 222 are respectively connected to the corresponding needle winding shaft sleeves 214 through a synchronous transmission unit 224 for transmission.

Specifically, one end of the needle rolling sleeve 214 can be rotatably connected to one side of the rolling needle hanging plate 211 through a bearing, the rolling needle main shaft 212 is inserted into the rolling needle bushing 214, and one end of the rolling needle 213 is connected to the rolling needle main shaft 212 The other end extends toward the side away from the needle roller sleeve 214. The needle roller spindle 212 and the needle roller sleeve 214 can be connected by means of key connection or tooth connection, so that the needle roller spindle 212 and the roller can be connected. The needle 213 can rotate synchronously with the needle winding sleeve 214 . Optionally, the linkage main shaft 222 is arranged in parallel with the rolling needle 213, and both ends of the linkage main shaft 222 are rotatably connected to the two needle rolling hanging plates 211 through bearings respectively, and the two rolling needle hanging plates 211 play a certain role in the linkage main shaft 222. The support function of the spool can effectively avoid the radial runout of the linkage main shaft 222 during the rotation process, so as to ensure the rotation stability of the linkage main shaft 222 .

The rotary driving member 221 is fixed on one of the needle hanging plates 211. The driving shaft of the rotary driving member 221 can be driven and connected to the linkage main shaft 222 through the coupling 223. The needle hub 214 is connected by transmission, when the driving element is running, it can drive the linkage main shaft 222 to rotate, and then the two needle hubs 214 can be rotated synchronously under the drive of the synchronous transmission unit 224, so that the double-sided needle 213 can be rolled at the same time. drive. Specifically, the rotary driving member 221 may be a rotary motor, a rotary cylinder or other driving mechanisms capable of outputting a rotational torque. In this embodiment, the rotary drive member 221 is preferably a servo motor, and the rotation speed can be precisely controlled by the servo motor, and the winding accuracy can be further improved. The synchronous transmission unit 224 includes, but is not limited to, a synchronous pulley drive, a turbine worm drive, and the like.

In a specific embodiment, the synchronous transmission unit 224 includes a first synchronous wheel 2241, a second synchronous wheel 2242 and a synchronous belt 2243. The synchronous belt 2243 is wound around the first synchronous wheel 2241 and the second synchronous wheel 2242. The wheel 2241 is sleeved on the linkage main shaft 222 , and the second synchronizing wheel 2242 is sleeved on the needle roller sleeve 214 . The rotary drive member 221 drives the linkage main shaft 222 to rotate, thereby driving the first synchronizing wheel 2241 to rotate. The first synchronizing wheel 2241 can drive the second synchronizing wheel 2242 to rotate through the synchronous belt 2243, and then drive the needle rolling sleeve 214 through the second synchronizing wheel 2242. Rotation, the transmission structure is simple, and the transmission is reliable.

Further, please refer to FIG. 7 , each winding needle 213 includes a connecting section 2131 and a winding section 2132, the connecting section 2131 is connected with the needle winding spindle 212, and the winding section 2132 is recessed radially relative to the connecting section 2131 to form a groove, A step 2133 is provided at the adjoining portion of the winding section 2132 and the connecting end. Specifically, the rolling needle 213 is generally a stepped shaft structure. As shown in FIG. 2 , when the two rolling needles 213 cooperate with each other, the winding section 2132 of one rolling needle 213 can be accommodated in the concave groove of the other rolling needle 213 . In the groove, the end of each winding needle 213 can be overlapped on the step 2133 of the other winding needle 213, so that a certain gap is formed in the middle of the winding shaft formed by the two winding needles 213, so as to facilitate the The positive and negative sheets of the battery cell 100 and the separator material are clamped in the feeding process, and the needle pulling action is facilitated after the winding of the battery core 100 is completed.

In order to facilitate needle extraction and core removal after the winding is completed, further, each needle winding assembly 21 further includes a first linear driving member 215, and the needle winding spindle 212 is slidably inserted into the needle winding sleeve 214 along the axial direction. , the first linear driving member 215 is drivingly connected with the needle winding main shaft 212 , and the first linear driving member 215 can drive the needle winding main shaft 212 to slide along the axial direction, so as to drive the winding needle 213 to be pulled away from the battery cell 100 . Specifically, a connection key may be provided on one of the reel sleeve 214 and the reel main shaft 212, and the other is provided with a key slot adapted to the connection key, and the key slot extends along the axial direction of the reel main shaft 212, In this way, during the winding operation, the needle winding spindle 212 can rotate synchronously with the needle winding sleeve 214. After the winding is completed, the needle winding spindle 212 is driven by the first linear driving member 215 to drive the winding needle 213 to move away from another roll. By moving the needle 213 in the direction, the winding needle 213 can be pulled away from the battery cell 100 , and the automatic needle pulling action can be realized by the movement of the first linear driving member 215 , which saves time and effort. The first linear driving member 215 includes, but is not limited to, a linear cylinder, a hydraulic cylinder, an electric push rod, and the like. For example, in this embodiment, the first linear driving member 215 is a square cylinder.

Further, each needle winding assembly 21 further includes a first linear guide 216 and a needle withdrawal connecting plate 217, the first linear guide 216 is parallel to the needle winding spindle 212, and the needle withdrawal connecting plate 217 and the first linear guide 216 can be connected. In the sliding connection, the end of the winding main shaft 212 away from the winding needle 213 is rotatably connected to the needle withdrawal connecting plate 217 , and the needle withdrawal connecting plate 217 is drivingly connected with the first linear driving member 215 . The needle withdrawal connecting plate 217 is driven by the first linear driving member 215 to move, and the needle withdrawal connecting plate 217 can drive the needle winding spindle 212 to move toward the side away from the needle winding hanging plate 211 , thereby pulling the winding needle 213 from the battery cell 100 . and in the process of withdrawing the needle, the needle withdrawal connecting plate 217 can slide along the first linear guide rail 216 . The first linear guide rail 216 and the needle withdrawal connecting plate 217 are slidably matched, so that the movement of the needle winding spindle 212 can be well guided, and the movement of the needle winding spindle 212 can be made more stable, thereby ensuring the needle winding 213 The movement stability during the needle drawing process can prevent damage to the battery cell 100 and ensure the quality of the battery cell 100 . Optionally, a needle withdrawal connecting block 218 is fixed on the needle withdrawal connecting plate 217 , and the end of the needle winding spindle 212 is rotatably connected to the needle withdrawal connecting block 218 . Of course, the needle withdrawal connecting plate 217 and the needle withdrawal connecting block 218 can also be integrally formed. The needle withdrawal connecting plate 217 can be slidably connected to the first linear guide rail 216 through the slider 219 , or the needle withdrawal connecting plate 217 can be integrally formed with the slider 219 .

In addition, in order to facilitate subsequent coring operations, the coring station of the cell winding device may be disposed outside the frame 10 . As shown in FIG. 1 , in order to enable the winding mechanism 20 to drive the battery cells 100 to move to the core-taking station, the frame 10 is provided with a second linear guide 11 and a second linear driving member 12 , and the winding mechanism 20 is slidable. Installed on the second linear guide 11 , the second linear driving member 12 is drivingly connected with the winding mechanism 20 , and the second linear driving member 12 can drive the winding mechanism 20 to move to the core taking station. When the winding mechanism 20 completes the winding and gluing of the battery cell 100, the driving assembly 22 stops driving, and the second linear driving member 12 can drive the winding mechanism 20 to move along the second linear guide 11 until the winding shaft is moved. The upper cell 100 is in the coring station. The second linear drive member 12 includes, but is not limited to, a linear cylinder, an electric push rod, and the like.

Specifically, as shown in FIG. 1 , in one embodiment. The second linear guide 11 extends longitudinally, the second linear guide 11 is perpendicular to the first linear guide 216 , the second linear driving member 12 adopts a square cylinder, and the second linear driving member 12 is installed on the frame 10 through the fixing plate 13 , the end of the piston rod of the second linear driving member 12 is connected with one of the needle winding hanging plates 211 through the push plate 14 , and a limit switch 15 is also provided on the frame 10 . The second linear driving member 12 drives the push plate 14 and the needle rolling hanging plate 211, so that the winding mechanism 20 can move along the second linear guide rail 11 as a whole, and stops when it touches the limit switch 15, thereby ensuring the electrical The core 100 is just located at the coring station, so as to facilitate the subsequent needle extraction and coring operation.

In addition, after the traditional battery cell winding device completes the winding of the battery cell 100, the needle-pulling action of the battery cell 100 is usually completed by directly pulling the needle. It has a large weight and has a large weight. During the needle drawing process, the friction between the surface of the winding needle and the contact surface of the battery cell 100 is relatively large. The needle movement is very difficult, and after the winding needle is extracted, the flatness of the surface of the cell 100 cannot be guaranteed, which seriously affects the quality of the cell 100 .

In order to solve the problem of difficult needle extraction, please refer to FIG. 1 and FIG. 4 , in one embodiment, the cell winding device further includes an auxiliary core removal mechanism 30 , and the auxiliary core removal mechanism 30 includes a cell support component, and a cell The support assembly drives the connected drive module, and the drive module can drive the cell support assembly to move to the auxiliary core removal station, where the battery cell support assembly can hold the battery cell 100 . After the winding is completed, the drive module drives the cell support assembly to move to the auxiliary core removal station. In the auxiliary core removal station, the cell support assembly is just below the cell 100 and can hold the cell 100, so that the The weight of the battery cell 100 is transferred to the battery cell support assembly, so that the frictional force between the battery cell 100 and the winding needle 213 caused by the weight of the battery cell 100 can be eliminated. 213 is extracted from the battery cell 100, which can effectively improve the efficiency of needle extraction, and can ensure the quality of the battery cell 100 after extraction.

After the needle pulling action is completed, the battery cell 100 needs to be transferred to the blanking station for blanking. In order to facilitate the blanking of the battery cell 100, further, as shown in FIG. 4 , the battery cell support assembly includes a support seat 31, which can The end wheel 32 is rotatably connected to the support base 31, and the lift plate 33 is located at the bottom of the support base 31. One side of the lift plate 33 is rotatably connected to the support base 31. The drive module includes a fixed frame 35 and a lift drive member 36. and the blanking ejector rod 37, the lift driving member 36 and the blanking ejector rod 37 are both installed on the fixing frame 35, the lifting driving member 36 is drivingly connected with the lifting plate 33, and the lifting driving member 36 can drive the lifting plate 33 to move down to the blanking In the blanking station, the blanking ejector rod 37 pushes the support base 31 to an inclined state.

Specifically, the finishing wheel 32 can be a roller or a roller arranged on the top of the support base 31 , the lift plate 33 and the support base 31 can be rotatably connected by a rotating shaft 34 , and the width of the support base 31 is slightly larger than the width of the lift plate 33 , The blanking ejector rod 37 extends vertically, and the top end of the blanking ejector rod 37 is opposite to the position where the support base 31 protrudes from the lifting plate 33 . After the winding is completed, the lift drive member 36 drives the lift plate 33 and the support base 31 to move upward to the auxiliary core removal station. At this time, the support base 31 and the lift plate 33 are both in a horizontal state, and the battery core can be removed by the finishing wheel 32 100 to hold it; then perform the needle-pulling action, when the winding needle 213 is completely pulled away from the battery core 100, the lifting driving member 36 drives the lifting plate 33 and the support base 31 to move downward, and the battery core 100 located on the closing wheel 32 is also Move down together until it reaches the unloading station. At this time, the top of the unloading ejector rod 37 can push the support base 31 to an inclined state, so that the battery cell 100 can automatically roll down from the finishing wheel 32 to the receiving material. station, so as to complete the automatic blanking action of the battery cell 100 . By arranging the finishing wheel 32 on the support base 31, there is rolling friction between the finishing wheel 32 and the battery cell 100, and the frictional force is small, which is convenient for the battery cell 100 to slide down from the support base 31 to the receiving station; and by setting the finishing wheel 32 can avoid damage to the surface of the battery cell 100 due to excessive friction between the battery cell 100 and the support base 31 during the cutting process, so as to further ensure the quality of the battery core 100 . The lift driving member 36 includes, but is not limited to, a linear cylinder, an electric push rod, and the like. For example, in this embodiment, the lift driving member 36 is a circular cylinder. Optionally, there are two or more blanking ejector rods 37 to ensure that they can bear the weight of the large-sized battery cells 100 .

Optionally, the drive module further includes a vertically extending guide shaft 38 , the fixing frame 35 is provided with a shaft hole slidably matched with the guide shaft 38 , and the upper end of the guide shaft 38 is fixedly connected to the lift plate 33 . By arranging the guide shaft 38 , the lifting motion of the lifting plate 33 can be well guided, thereby ensuring the stability of the lifting and lowering of the battery cell 100 .

Further, a pressure sensor 39 is provided on the cell support assembly, and an in-position sensor 2111 is provided on the winding needle hanging plate 211 . When the lift driving member 36 drives the finishing wheel 32 to move upward to hold the battery cell 100, the switches of the pressure sensor 39 and the position sensor 2111 are triggered, and the lift driving member 36 stops at this time. The pressure sensor 39 and the in-position sensor 2111 can detect in real time whether the finishing wheel 32 supports the battery cell 100, so as to ensure the smooth operation of the entire core removal and unloading operations. The in-position sensor 2111 may be a laser sensor, a photoelectric sensor, or the like.

Further, referring to FIG. 5 and FIG. 6 , the cell winding device further includes a material receiving mechanism 40 , the material receiving mechanism 40 is located on one side of the unloading station, and the material receiving mechanism 40 includes a mounting bracket 41 , which is arranged on the mounting bracket 41 . The battery receiving plate 42 on the upper battery, and the battery baffle 43 arranged on one side of the battery receiving plate 42 . When the lift drive member 36 drives the lift plate 33 to move down to the blanking station, the support base 31 rotates to the inclined state under the pushing action of the blanking ejector rod 37, and the battery cells 100 on the finishing wheel 32 can automatically slide down It is transferred to the cell receiving plate 42 of the feeding mechanism 40 , and the cell 100 can be prevented from slipping down by the cell baffle 43 , so that the automatic feeding action of the cell 100 can be realized. Optionally, the material receiving mechanism 40 further includes a moving module drivingly connected with the mounting bracket 41 . After the material receiving is completed, the moving module can drive the mounting bracket 41 to move to a designated position, thereby realizing the automatic transfer of the battery cells 100 .

Referring to FIG. 1 , in a preferred embodiment, the cell winding device includes a winding mechanism 20 , an auxiliary core-taking mechanism 30 and a material splicing mechanism 40 . The specific implementations of the winding mechanism 20 , the auxiliary coring mechanism 30 and the material receiving mechanism 40 may refer to the above-mentioned embodiments. The battery winding device can realize a set of driving components 22 through the winding mechanism 20 to realize the dual-drive winding work of the double winding needles 213, so that the winding driving force of the battery core 100 can be evenly distributed on the bilateral winding needles 213, In this way, when winding the battery cells 100 (especially for the large-diameter battery cells 100 ), it can be ensured that the battery cells 100 maintain a uniform constant tension during the winding process, so that the battery cells 100 have better performance. The winding flatness and stability of the battery core 100 can be guaranteed to ensure the winding quality of the battery core 100; after the winding is completed, during the needle drawing process, the battery core 100 can be supported by the battery core support component of the auxiliary core removal mechanism 30, so that the battery core 100 can be supported The weight of the cell 100 is transferred to the cell support assembly, so that the frictional force between the cell 100 and the winding needle 213 due to the weight of the battery cell 100 can be eliminated. The extraction from the battery core 100 can effectively improve the efficiency of needle extraction and ensure the quality of the shaft needle of the battery core 100; after the needle extraction is completed, the auxiliary core removal mechanism 30 can also automatically transfer the battery core 100 to the material receiving mechanism 40. The receiving and transferring of the battery cells 100 can be realized by the material receiving mechanism 40 . The above-mentioned cell winding device can realize a series of actions of automatic winding, needle extraction, core removal, material cutting and material splicing of the battery cell 100, and can realize high-quality and high-efficiency automatic cell production.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

1. A cell winding device, comprising a winding mechanism, wherein the winding mechanism comprises:

each coiling needle assembly comprises a coiling needle hanging plate, a coiling needle main shaft rotatably arranged on the coiling needle hanging plate, and a coiling needle connected with the coiling needle main shaft, and the two coiling needles can be mutually matched to form a coiling shaft for coiling the battery cell; and

and the driving assembly is respectively in driving connection with the two winding needle main shafts, and the two winding needle main shafts can synchronously rotate under the driving of the driving assembly.

2. The cell winding device according to claim 1, wherein each of the winding needle assemblies further includes a winding needle shaft sleeve sleeved on the winding needle main shaft, the winding needle shaft sleeve is rotatably connected to the winding needle hanging plate, the winding needle main shaft is in transmission connection with the winding needle shaft sleeve, the driving assembly includes a rotary driving member, a linkage main shaft and two sets of synchronous transmission units, the rotary driving member is in driving connection with the linkage main shaft, the synchronous transmission units are in one-to-one correspondence with the winding needle shaft sleeves, and two ends of the linkage main shaft are in transmission connection with the corresponding winding needle shaft sleeves through the synchronous transmission units respectively.

3. The cell winding device according to claim 2, wherein the synchronous transmission unit includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt, the synchronous belt is wound around the first synchronous pulley and the second synchronous pulley, the first synchronous pulley is sleeved on the linkage spindle, and the second synchronous pulley is sleeved on the winding pin shaft sleeve.

4. The cell winding device according to claim 1, wherein each winding pin comprises a connecting section and a winding section, the connecting section is connected with the winding pin main shaft, the winding section is recessed in a radial direction relative to the connecting section, and a step is provided at an adjacent position of the winding section and the connecting end.

5. The cell winding device according to claim 2 or 3, wherein each winding pin assembly further includes a first linear driving member, the winding pin spindle is axially slidably inserted into the winding pin spindle sleeve, the first linear driving member is drivingly connected to the winding pin spindle, and the first linear driving member can drive the winding pin spindle to axially slide so as to drive the winding pin to be withdrawn from the cell.

6. The cell winding device according to claim 5, wherein each of the winding pin assemblies further includes a first linear guide and a needle withdrawing connection plate, the first linear guide is parallel to the winding pin spindle, the needle withdrawing connection plate is slidably connected to the first linear guide, one end of the winding pin spindle, which is far away from the winding pin, is rotatably connected to the needle withdrawing connection plate, and the needle withdrawing connection plate is drivingly connected to the first linear driving member.

7. The cell winding device according to claim 5, further comprising an auxiliary core taking mechanism, wherein the auxiliary core taking mechanism comprises a cell support assembly and a driving module in driving connection with the cell support assembly, the driving module can drive the cell support assembly to move to an auxiliary core taking station, and the cell support assembly can hold the cell at the auxiliary core taking station.

8. The cell winding device according to claim 7, wherein the cell supporting assembly includes a supporting base, a take-up pulley rotatably connected to the supporting base, and a lifting plate located at a bottom of the supporting base, one side of the lifting plate is rotatably connected to the supporting base, the driving module includes a fixing frame, a lifting driving member and a discharging ejector rod, the lifting driving member and the discharging ejector rod are both mounted on the fixing frame, the lifting driving member is drivingly connected to the lifting plate, the lifting driving member can drive the lifting plate to move downward to a discharging station, and at the discharging station, the discharging ejector rod pushes the supporting base to an inclined state.

9. The cell winding device according to claim 8, wherein a pressure sensor is disposed on the cell support assembly, and an in-place sensor is disposed on the winding needle hanging plate.

10. The cell winding device according to claim 8, further comprising a receiving mechanism, the receiving mechanism is located at one side of the discharging station, the receiving mechanism includes a mounting bracket, a cell receiving plate disposed on the mounting bracket, and a cell baffle plate disposed at one side of the cell receiving plate, and one side of the cell receiving plate away from the cell baffle plate is close to the tail pulley.

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