CN211017269U - Battery 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

Battery cell winding device

Technical Field

The utility model relates to a battery production facility technical field especially relates to an electricity core take-up device.

Background

Traditional electric core coiling mechanism is in the coiling manufacture process of battery electricity core, adopt the unilateral drive book needle of unipolar to carry out battery electricity core coiling action usually, this kind of electric core coiling mechanism is only applicable to the coiling production of small-size battery electricity core, to large-scale battery electricity core, after the diameter increase of battery electricity core reaches a definite value, be difficult to guarantee that battery electricity core keeps even constant tension in coiling process, and easily cause the winding roughness of battery electricity core uneven, the relatively poor scheduling problem of stability, thereby influence the coiling quality of battery electricity core.

SUMMERY OF THE UTILITY MODEL

Therefore, when a large-sized battery cell is produced by the conventional battery cell winding device, the uniform constant tension of the battery cell in the winding process is difficult to keep, the problems of uneven winding flatness, poor stability and the like of the battery cell are easily caused, and the battery cell winding device is suitable for production of the large-sized battery cell well and ensures that the battery cell has high winding quality.

A cell winding device comprising a winding mechanism, the winding mechanism comprising:

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.

When the battery cell winding device works, the positive and negative pole pieces and the diaphragm material of the battery cell are clamped between the two winding needles, the two winding needle main shafts are driven to synchronously rotate through the driving assembly, and then the two winding needles are driven to synchronously rotate to perform winding action, so that the winding of the battery cell is realized. Compare in traditional electric core take-up device adopts the unilateral drive of unipolar to convolute, the utility model discloses an electric core take-up device's winding mechanism can realize the dual drive winding work that one set of drive assembly realized two book needles for but the coiling drive power evenly distributed of electric core is on two side book needles, so, when coiling to battery electricity core (especially to the battery electricity core of major diameter), can guarantee that battery electricity core keeps even constant tension at the coiling in-process, make battery electricity core have better coiling roughness and stability, thereby can effectively promote the coiling quality of battery electricity core, the production that is applicable to large-scale battery electricity core that can be fine.

In one embodiment, each needle rolling assembly further comprises a needle rolling shaft sleeve sleeved on the needle rolling main shaft, the needle rolling shaft sleeve is rotatably connected to the needle rolling hanging plate, the needle rolling main shaft is in transmission connection with the needle rolling shaft sleeve, the driving assembly comprises a rotary driving piece, a linkage main shaft and two sets of synchronous transmission units, the rotary driving piece is in driving connection with the linkage main shaft, the synchronous transmission units are in one-to-one correspondence with the needle rolling shaft sleeves, and two ends of the linkage main shaft are in transmission connection with the corresponding needle rolling shaft sleeves through the synchronous transmission units respectively.

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 on the first synchronous wheel and the second synchronous wheel, the first synchronous wheel is sleeved on the linkage spindle, and the second synchronous wheel is sleeved on the needle winding shaft sleeve.

In one embodiment, each winding needle comprises a connecting section and a winding section, the connecting section is connected with the winding needle main shaft, the winding section is recessed relative to the connecting section in the radial direction to form a groove, and the adjacent position of the winding section and the connecting end is provided with a step.

In one embodiment, each of the winding needle assemblies further includes a first linear driving member, the winding needle spindle is axially slidably inserted into the winding needle spindle, the first linear driving member is in driving connection with the winding needle spindle, and the first linear driving member can drive the winding needle spindle to axially slide so as to drive the winding needle to be withdrawn from the battery cell.

In one embodiment, each needle rolling assembly further comprises a first linear guide rail and a needle withdrawing connecting plate, the first linear guide rail is parallel to the needle rolling main shaft, the needle withdrawing connecting plate is slidably connected with the first linear guide rail, one end of the needle rolling main shaft, far away from the needle, is rotatably connected to the needle withdrawing connecting plate, and the needle withdrawing connecting plate is in driving connection with the first linear driving piece.

In one embodiment, the cell winding device further comprises an auxiliary core taking mechanism, the auxiliary core taking mechanism comprises a cell supporting component and a driving module in driving connection with the cell supporting component, the driving module can drive the cell supporting component to move to an auxiliary core taking station, and the cell supporting component can hold the cell at the auxiliary core taking station.

In one embodiment, the battery cell supporting assembly comprises a supporting seat, a tail wheel rotatably connected to the supporting seat, and a lifting plate located at the bottom of the supporting seat, wherein one side of the lifting plate is rotatably connected with the supporting seat, the driving module comprises a fixing frame, a lifting driving piece and an unloading ejector rod, the lifting driving piece and the unloading ejector rod are both installed on the fixing frame, the lifting driving piece is in driving connection with the lifting plate, the lifting driving piece can drive the lifting plate to move downwards to an unloading station, and the unloading station is used for pushing the supporting seat to an inclined state.

In one embodiment, a pressure sensor is arranged on the battery cell supporting assembly, and an in-place sensor is arranged on the winding needle hanging plate.

In one embodiment, the battery cell winding device further includes a receiving mechanism, the receiving mechanism is located on one side of the blanking station, the receiving mechanism includes a mounting bracket, a battery cell receiving plate disposed on the mounting bracket, and a battery cell baffle plate disposed on one side of the battery cell receiving plate, and one side of the battery cell receiving plate away from the battery cell baffle plate is close to the take-up pulley.

Drawings

Fig. 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 a winding mechanism of the cell winding device in fig. 1;

FIG. 3 is a schematic view of a portion of the winding mechanism of 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 a material receiving mechanism of the cell winding device in fig. 1;

FIG. 6 is a schematic diagram of the auxiliary core taking mechanism and the receiving mechanism;

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

10. A frame, 11, a second linear guide rail, 12, a second linear driving element, 13, a fixed plate, 14, a push plate, 15, a limit switch, 20, a winding mechanism, 21, a needle winding assembly, 211, a needle winding hanging plate, 2111, an in-place sensor, 212, a needle winding main shaft, 213, a needle winding, 2131, a connecting section, 2132, a winding section, 2133, a step, 214, a needle winding shaft sleeve, 215, a first linear driving element, 216, a first linear guide rail, 217, a needle withdrawing connecting plate, 218, a needle withdrawing connecting block, 219, a sliding block, 22, a driving assembly, 221, a rotary driving element, 222, a linkage main shaft, 223 a coupling, 224, a synchronous transmission unit, 2241, a first synchronous wheel, 2242, a second synchronous wheel, 2243, a synchronous belt, 30, an auxiliary core taking mechanism, 31, a supporting seat, 32, a tail withdrawing wheel, 33, a lifting plate, 34, a rotating shaft, 35, a fixed frame, 36, a lifting driving element, 37, a blanking ejector rod, 38. the device comprises a guide shaft 39, a pressure sensor 40, a material receiving mechanism 41, a mounting bracket 42, a battery cell receiving plate 43, a battery cell baffle plate 100 and a battery cell.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured 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 the like are used herein for illustrative purposes only. In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

Referring to fig. 1 to fig. 3, a battery cell winding apparatus includes a frame 10 and a winding mechanism 20 disposed on the frame 10. The winding mechanism 20 comprises two winding needle assemblies 21 and a driving assembly 22, wherein the two winding needle assemblies 21 are arranged on the frame 10 oppositely. Each winding needle assembly 21 includes a winding needle hanging plate 211, a winding needle spindle 212 rotatably mounted on the winding needle hanging plate 211, and a winding needle 213 connected to the winding needle spindle 212, wherein the two winding needles 213 can be overlapped with each other to form a winding shaft for winding the battery cell 100. The driving assembly 22 is respectively connected with the two winding needle spindles 212 in a driving manner, and the two winding needle spindles 212 can synchronously rotate under the driving of the driving assembly 22.

Specifically, the frame 10 is used to form a main body supporting and mounting structure, and the frame 10 may be made of aluminum or stainless steel. As shown in fig. 2, the two winding needle hanging plates 211 are disposed oppositely, the two winding needles 213 are disposed between the two winding needle hanging plates 211, and the two winding needles 213 extend in opposite directions along a horizontal direction, the two winding needles 213 can be overlapped with each other in a vertical direction, the positive and negative pole pieces and the diaphragm material of the battery electric core 100 can be clamped by the cooperation of the two winding needles 213, the driving assembly 22 can simultaneously drive the two winding needle main shafts 212 to rotate synchronously, the winding needle main shafts 212 can drive the winding needles 213 to rotate together, and thus, the winding action of the battery electric core 100 can be realized by the synchronous rotation of the two winding needles 213. The shape of the winding needle 213 may be set according to the shape of the battery cell 100 to be produced, and the square winding needle 213 or the circular winding needle 213 may be used.

When the battery cell winding device works, the positive and negative pole pieces and the diaphragm material of the battery cell 100 are clamped between the two winding needles 213, the driving assembly 22 drives the two winding needle main shafts 212 to synchronously rotate, and then drives the two winding needles 213 to synchronously rotate so as to perform a winding action, so that the winding of the battery cell 100 is realized. Compare in traditional electric core take-up device adopts the unilateral drive of unipolar to convolute, the utility model discloses an electric core take-up device's winding mechanism 20 can realize that one set of drive assembly 22 realizes the dual drive coiling work of two book needles 213, but make electric core 100's coiling drive power evenly distributed on bilateral book needle 213, so, when coiling to battery electricity core 100 (especially to the battery electricity core 100 of major diameter), can guarantee that battery electricity core 100 keeps even constant tension at the coiling in-process, make battery electricity core 100 have better coiling roughness and stability, thereby can effectively promote battery electricity core 100's coiling quality, the production that is applicable to large-scale battery electricity core 100 that can be fine.

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

Specifically, one end of the needle winding shaft sleeve 214 can be rotatably connected to one surface of the needle winding hanging plate 211 through a bearing, the needle winding main shaft 212 is inserted into the needle winding shaft sleeve 214, one end of the winding needle 213 is connected with the needle winding main shaft 212, the other end of the winding needle extends towards one side far away from the needle winding shaft sleeve 214, the needle winding main shaft 212 and the needle winding shaft sleeve 214 can be in transmission connection through key connection or tooth connection and the like, and therefore the needle winding main shaft 212 and the winding needle 213 can synchronously rotate along with the needle winding shaft sleeve 214. Optionally, the linkage main shaft 222 is parallel to the winding needle 213, two ends of the linkage main shaft 222 are respectively rotatably connected to the two winding needle hanging plates 211 through bearings, and the two winding needle hanging plates 211 play a certain supporting role for the linkage main shaft 222, so that radial runout of the linkage main shaft 222 in the rotation process can be effectively avoided, and the rotation stability of the linkage main shaft 222 is ensured.

The rotary driving member 221 is fixed on one of the needle winding hanging plates 211, a driving shaft of the rotary driving member 221 can be in driving connection with the linkage main shaft 222 through the coupler 223, two ends of the linkage main shaft 222 are in driving connection with the corresponding needle winding shaft sleeves 214 through the synchronous transmission unit 224 respectively, when the driving member operates, the linkage main shaft 222 can be driven to rotate, and then the two needle winding shaft sleeves 214 can be driven to synchronously rotate under the driving of the synchronous transmission unit 224, so that the simultaneous driving of the two side needle winding shafts 213 can be realized. The rotary drive 221 may be embodied as a rotary motor, a rotary cylinder, or other drive mechanism capable of outputting a rotational torque. In this embodiment, the rotary driving member 221 is preferably a servo motor, and the precise control of the rotation speed can be realized through the servo motor, so as to further improve the winding precision. The synchronous drive unit 224 includes, but is not limited to, a synchronous pulley drive, a worm gear drive, and the like.

In one 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 first synchronous wheel 2241 is sleeved on the linkage spindle 222, and the second synchronous wheel 2242 is sleeved on the needle winding sleeve 214. The rotary driving piece 221 drives the linkage spindle 222 to rotate, so as to drive 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 the winding needle shaft sleeve 214 is driven to rotate through the second synchronizing wheel 2242, so that the transmission structure is simple, and the transmission is reliable.

Further, referring to fig. 7, each winding needle 213 includes a connecting section 2131 and a winding section 2132, the connecting section 2131 is connected to the winding needle spindle 212, the winding section 2132 is recessed radially relative to the connecting section 2131 to form a groove, and a step 2133 is disposed at a position adjacent to the connecting end of the winding section 2132. Specifically, the winding pins 213 are substantially stepped shaft-shaped, as shown in fig. 2, when the two winding pins 213 are engaged with each other, the winding section 2132 of one winding pin 213 can be accommodated in the groove of the other winding pin 213, and the end of each winding pin 213 can be lapped on the step 2133 of the other winding pin 213, so that a certain gap is formed between the two winding pins 213 engaged with each other to clamp the positive and negative electrode plates and the separator material of the battery cell 100 during feeding, and to facilitate the pin pulling operation after the winding of the battery cell 100 is completed.

In order to facilitate needle extraction and coring after winding, further, each winding needle assembly 21 further includes a first linear driving element 215, the winding needle spindle 212 is axially slidably inserted in the winding needle shaft sleeve 214, the first linear driving element 215 is drivingly connected to the winding needle spindle 212, and the first linear driving element 215 can drive the winding needle spindle 212 to axially slide so as to drive the winding needle 213 to be extracted from the battery cell 100. Specifically, one of the winding needle shaft sleeve 214 and the winding needle main shaft 212 may be provided with a connection key, and the other one of the winding needle shaft sleeve 214 and the winding needle main shaft 212 is provided with a key slot adapted to the connection key, and the key slot extends along the axial direction of the winding needle main shaft 212, so that the winding needle main shaft 212 may rotate synchronously with the winding needle shaft sleeve 214 when winding operation is performed, after winding is completed, the winding needle main shaft 212 is driven by the first linear driving member 215 to drive the winding needle 213 to move towards a direction away from the other winding needle 213, so that the winding needle 213 may be pulled out from the battery cell 100, and the automatic needle pulling action may be realized by the movement of the first linear driving member 215, which is. The first linear driving element 215 includes, but is not limited to, a linear cylinder, a hydraulic cylinder, an electric push rod, or the like. For example, in the present embodiment, the first linear drive 215 is a square cylinder.

Furthermore, each needle rolling assembly 21 further includes a first linear guide 216 and an ejector connecting plate 217, the first linear guide 216 is parallel to the needle rolling spindle 212, the ejector connecting plate 217 is slidably connected to the first linear guide 216, an end of the needle rolling spindle 212 away from the needle rolling 213 is rotatably connected to the ejector connecting plate 217, and the ejector connecting plate 217 is drivingly connected to the first linear driving element 215. The needle withdrawing connecting plate 217 is driven by the first linear driving member 215 to move, the needle withdrawing connecting plate 217 can drive the needle winding main shaft 212 to move towards one side far away from the needle winding hanging plate 211, so that the needle winding 213 is drawn out of the battery cell 100, and in the needle drawing process, the needle withdrawing connecting plate 217 can slide along the first linear guide rail 216. Through first linear guide 216 and withdraw of needle connecting plate 217 sliding fit, can play fine guide effect to the motion of book needle main shaft 212 to can make the motion of book needle main shaft 212 more steady, thereby can guarantee to roll up needle 213 and take out the motion stability of needle in-process, in order to prevent to produce the damage to electric core 100, guarantee the quality of electric core 100. Optionally, an ejector connecting block 218 is fixed on the ejector connecting plate 217, and the end of the needle winding spindle 212 is rotatably connected to the ejector connecting block 218. Of course, the needle withdrawing connecting plate 217 and the needle withdrawing connecting block 218 can also be integrally formed. The needle withdrawing connecting plate 217 may be slidably connected to the first linear guide 216 via a slider 219, or the needle withdrawing connecting plate 217 may be integrally formed with the slider 219.

In addition, in order to facilitate subsequent coring operation, a coring station of the cell winding device may be disposed outside the rack 10. As shown in fig. 1, in order to enable the winding mechanism 20 to drive the battery cell 100 to move to the coring station, a second linear guide rail 11 and a second linear driving element 12 are disposed on the frame 10, the winding mechanism 20 is slidably mounted on the second linear guide rail 11, the second linear driving element 12 is in driving connection with the winding mechanism 20, and the second linear driving element 12 can drive the winding mechanism 20 to move to the coring station. After the winding mechanism 20 finishes the actions of winding, gluing and the like of the battery core 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 rail 11 until the battery core 100 on the winding shaft is positioned at the coring station. The second linear drive 12 includes, but is not limited to, a linear cylinder, an electric push rod, etc.

Specifically, as shown in FIG. 1, in one embodiment. The second linear guide rail 11 extends along the longitudinal direction, the second linear guide rail 11 is perpendicular to the first linear guide rail 216, the second linear driving member 12 adopts a square cylinder, the second linear driving member 12 is mounted on the rack 10 through a fixing plate 13, the end of a piston rod of the second linear driving member 12 is connected with one of the needle coiling hanging plates 211 through a push plate 14, and the rack 10 is further provided with a limit switch 15. Drive push pedal 14 and book needle link plate 211 through second linear driving piece 12 to can make winding mechanism 20 wholly remove along second linear guide 11, stop moving when touching limit switch 15, thereby can guarantee that electric core 100 just is located the coring station, so that subsequent core operation of taking out the needle.

In addition, traditional electric core coiling mechanism is after accomplishing electric core 100's coiling, the mode of direct pin drawing is adopted usually, accomplish battery electric core 100's the action of drawing the needle, to large-scale battery electric core 100, because its radial diameter is big, self has great weight, draw the needle in-process, it is great with the contact surface frictional force of electric core 100 to roll up the needle surface, it just can take out electric core 100 with rolling up the needle to need very big power, make to draw the needle action very difficult, and after the extraction is rolled up the needle, the roughness on electric core 100 surface is difficult to guarantee, seriously influence electric core 100's quality.

In order to solve the problem of the difficulty in needle withdrawing, please refer to fig. 1 and fig. 4, in an embodiment, the electric core winding device further includes an auxiliary core-withdrawing mechanism 30, the auxiliary core-withdrawing mechanism 30 includes an electric core supporting assembly and a driving module drivingly connected to the electric core supporting assembly, the driving module can drive the electric core supporting assembly to move to an auxiliary core-withdrawing station, and at the auxiliary core-withdrawing station, the electric core supporting assembly can hold the electric core 100. After the coiling is accomplished, the drive module drives electric core supporting component and moves to the supplementary station of getting core, get the station at the supplementary station of getting core, electric core supporting component just is located the below of electric core 100 and can hold electric core 100, make the weight of electric core 100 shift to on the electric core supporting component, thereby can eliminate electric core 100 and roll up the frictional force that produces between the needle 213 because electric core 100 self weight, so, only need less power alright take out from electric core 100 with rolling up needle 213, can effectively promote and take out needle efficiency, and can guarantee to take out the quality of electric core 100 after leaving.

After the action of drawing the needle is accomplished, need shift electric core 100 to the unloading station and carry out the unloading, in order to facilitate the unloading of electric core 100, furthermore, as shown in fig. 4, electric core supporting component includes supporting seat 31, rotationally connect the receipts tail pulley 32 on supporting seat 31, and be located the lifter plate 33 of supporting seat 31 bottom, one side and supporting seat 31 rotatable coupling of lifter plate 33, the drive module includes mount 35, lift driving piece 36 and unloading ejector pin 37 are all installed in mount 35, lift driving piece 36 and lifter plate 33 drive are connected, lift driving piece 36 can drive lifter plate 33 downstream to the unloading station, at the unloading station, unloading ejector pin 37 pushes away supporting seat 31 to the tilt state.

Specifically, the final wheel 32 may be a roller or a roller disposed on the top of the supporting seat 31, the lifting plate 33 and the supporting seat 31 may be rotatably connected through a rotating shaft 34, the width of the supporting seat 31 is slightly larger than that of the lifting plate 33, the blanking push rod 37 extends vertically, and the top end of the blanking push rod 37 is opposite to the portion of the supporting seat 31 protruding from the lifting plate 33. After winding is completed, the lifting driving part 36 drives the lifting plate 33 and the supporting seat 31 to move upwards to the auxiliary coring station, at this time, the supporting seat 31 and the lifting plate 33 are both in a horizontal state, and the battery core 100 can be supported by the tail winding wheel 32; then, a needle drawing action is performed, when the winding needle 213 is completely drawn from the battery cell 100, the lifting driving member 36 drives the lifting plate 33 and the supporting seat 31 to move downwards, the battery cell 100 on the tail winding wheel 32 also moves downwards together until the winding needle moves to a discharging station, and the top of the discharging ejector rod 37 can push the supporting seat 31 to an inclined state, so that the battery cell 100 can automatically roll off from the tail winding wheel 32 to the receiving station, and the automatic discharging action of the battery cell 100 is completed. The tail closing wheel 32 is arranged on the supporting seat 31, rolling friction is formed between the tail closing wheel 32 and the battery cell 100, and the friction force is small, so that the battery cell 100 can conveniently slide from the supporting seat 31 to a material receiving station; and the tail-collecting wheel 32 is arranged, so that the surface of the battery cell 100 can be prevented from being damaged due to overlarge friction force between the battery cell 100 and the supporting seat 31 in the blanking process, and the quality of the battery cell 100 can be further ensured. The lifting driving member 36 includes, but is not limited to, a linear cylinder, an electric push rod, etc. For example, in the present embodiment, the lift drive 36 is a circular cylinder. Optionally, the blanking ejector rods 37 are provided with two or more than two, so as to ensure that the battery cell 100 can bear the weight of a large-size battery cell.

Optionally, the driving module further includes a vertically extending guide shaft 38, a shaft hole slidably engaged with the guide shaft 38 is disposed on the fixing frame 35, and an upper end of the guide shaft 38 is fixedly connected to the lifting plate 33. The guide shaft 38 is arranged to guide the lifting movement of the lifting plate 33 well, so as to ensure the lifting stability of the battery cell 100.

Further, a pressure sensor 39 is arranged on the battery cell supporting assembly, and an in-place sensor 2111 is arranged on the winding needle hanging plate 211. When the lifting driving member 36 drives the tailing wheel 32 to move upwards to support the battery core 100, switches of the pressure sensor 39 and the position sensor 2111 are triggered, and at this time, the lifting driving member 36 stops acting. Whether the tail wheel 32 supports the battery core 100 or not can be detected in real time through the pressure sensor 39 and the in-place sensor 2111, so that the smooth operation of the whole coring and blanking actions is ensured. The in-position sensor 2111 may be a laser sensor, a photoelectric sensor, or the like.

Further, please refer to fig. 5 and fig. 6, the battery cell winding device further includes a material receiving mechanism 40, the material receiving mechanism 40 is located at one side of the blanking station, the material receiving mechanism 40 includes a mounting bracket 41, a battery cell receiving plate 42 disposed on the mounting bracket 41, and a battery cell baffle 43 disposed at one side of the battery cell receiving plate 42, and one side of the battery cell receiving plate 42 away from the battery cell baffle 43 is disposed near the tail pulley 32. When the lifting driving member 36 drives the lifting plate 33 to move downward to the discharging station, at this time, the supporting seat 31 rotates to an inclined state under the pushing action of the discharging ejector rod 37, the battery cell 100 on the tailing wheel 32 can automatically slide down and be conveyed to the battery cell receiving plate 42 of the material receiving mechanism 40, and the battery cell 100 can be prevented from sliding down through the battery cell baffle 43, so that the automatic material receiving action of the battery cell 100 can be realized. Optionally, the material receiving mechanism 40 further includes a moving module in driving connection with the mounting bracket 41, and after material receiving is completed, the moving module can drive the mounting bracket 41 to move to a specified position, so as to realize automatic transfer of the battery cell 100.

Referring to fig. 1, in a preferred embodiment, the cell winding device includes a winding mechanism 20, an auxiliary core-picking mechanism 30, and a material receiving mechanism 40. The winding mechanism 20, the auxiliary core-picking mechanism 30 and the receiving mechanism 40 can be implemented by referring to the above-mentioned embodiments. The battery cell winding device can realize double-drive winding work of the double winding needles 213 by one set of driving components 22 through the winding mechanism 20, so that the winding driving force of the battery cell 100 can be uniformly distributed on the double winding needles 213, and thus, when the battery cell 100 (especially for the battery cell 100 with a large diameter) is wound, the battery cell 100 can be ensured to keep uniform constant tension in the winding process, so that the battery cell 100 has better winding flatness and stability, and the winding quality of the battery cell 100 is ensured; after winding, in the process of needle drawing, the battery core 100 can be supported by the battery core supporting component of the auxiliary core-taking mechanism 30, so that the weight of the battery core 100 is transferred onto the battery core supporting component, and the friction force between the battery core 100 and the winding needle 213, which is generated by the self weight of the battery core 100, can be eliminated, so that the winding needle 213 can be drawn from the battery core 100 with a small force, the needle drawing efficiency can be effectively improved, and the quality of a pintle of the battery core 100 can be ensured; after the needle is pulled out, the auxiliary core taking mechanism 30 may also automatically transfer the battery cell 100 to the material receiving mechanism 40, and the receiving and transferring of the battery cell 100 may be realized through the material receiving mechanism 40. A series of actions of automatic winding, needle drawing, core taking, blanking and material receiving of the battery cell 100 can be realized through the cell winding device, and high-quality and high-efficiency cell automatic production can be realized.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should 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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