CN217848059U

CN217848059U - Battery core diaphragm wrapping mechanism

Info

Publication number: CN217848059U
Application number: CN202221870303.5U
Authority: CN
Inventors: 厉草元
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-18
Anticipated expiration: 2032-07-08

Abstract

The utility model provides an electric core diaphragm wrapping mechanism, which comprises a platform, two clamping parts, two beam rods, a signal transmitting unit and a signal receiving unit, wherein the two clamping parts can clamp two ends of an electric core and synchronously axially rotate along the same axis; the signal transmitting unit and the signal receiving unit are respectively arranged on the two beam rods, the signal transmitting unit can generate signals towards the signal receiving unit, and the signal receiving unit can receive the signals transmitted by the signal transmitting unit; whether mistake happens when the membrane is coiled and wrapped up outside the electric core is monitored by arranging the signal transmitting and receiving unit beside the electric core, and if the mistake happens, the received signal exceeds or is lower than a preset range, so that the condition that the membrane is misplaced can be accurately found.

Description

Battery core diaphragm wrapping mechanism

Technical Field

The utility model relates to a parcel diaphragm technical field behind the electric core lamination especially relates to an electric core diaphragm parcel mechanism.

Background

After the lamination process, the battery core in the lamination form can be stable in performance, and the manufacturing efficiency of the battery core is greatly improved. After the battery cell is subjected to the lamination process, a membrane needs to be wrapped on the surface of the laminated battery cell. Consequently in lithium electricity production facility field, generally adopt diaphragm parcel mechanism to realize functions such as diaphragm parcel behind the lamination, it is a technology that is used for diaphragm parcel to pile up back electric core, and it has advantages such as lamination parcel size uniformity, automatic unwinding needle and is adopted by lithium electricity manufacturing enterprise.

Under the ideal condition, the electric core is wrapped by the membranes layer by layer, and the edges of each layer of membranes are just overlapped. However, technicians find that in the process of winding and wrapping the diaphragm outside the battery cell, because the relative position between the battery cell and the diaphragm may have a positioning error, and meanwhile, because the diaphragm may generate wrinkles or bulges on the surface of the diaphragm in the process of wrapping the battery cell, it is difficult to ensure that the diaphragm is always wound on the battery cell in a straight line, so that the edge of each layer of diaphragm is dislocated. This results in the need for subsequent processing of the separator of the cell, which may also make it difficult for the separator to completely wrap the cell.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an electricity core diaphragm parcel mechanism for solve the problem that the diaphragm probably takes place the dislocation at the in-process of parcel electric core.

The technical scheme of the utility model is realized like this: the utility model provides an electric core diaphragm wrapping mechanism, which comprises a platform and two clamping parts arranged on the platform, wherein the two clamping parts can clamp two ends of an electric core and synchronously rotate axially along the same axis, one end of a diaphragm is arranged on the electric core, the other end of the diaphragm extends towards the direction away from the electric core, the diaphragm can be wrapped outside the electric core along with the rotation of the clamping parts, and the electric core wrapping mechanism also comprises two beam rods, a signal transmitting unit and a signal receiving unit; the two beam rods are symmetrically arranged on one side of the membrane surface, facing the platform, of the membrane and one side of the membrane surface, far away from the platform, of the membrane, the two beam rods are arranged at intervals, and the membrane penetrates through the two beam rods; the signal transmitting unit and the signal receiving unit are correspondingly arranged on the two beam rods, the signal transmitting unit and the signal receiving unit are both aligned to the edge of one side of the diaphragm, the signal transmitting unit can generate signals towards the signal receiving unit, and the signal receiving unit can receive the signals transmitted by the signal transmitting unit.

On the basis of the technical scheme, the clamping device further comprises a support rod, the support rod is arranged on the platform and can move relative to the platform along the rotating axial direction of the clamping part, and two beam rods are arranged on the support rod.

On the basis of the above technical solution, preferably, the distance between the two beam rods is not less than the maximum width of the battery core in the radial direction of the rotation axis of the clamping portion.

On the basis of the technical scheme, the device preferably further comprises a guide rail and a movable seat; the two guide rails are arranged on the platform and extend along the rotary axial direction of the clamping part; two sliding seats all set up on the guide rail, and each sliding seat can move along the guide rail for the platform, and the one-to-one correspondence sets up the clamping part on each sliding seat, and the clamping part can be for sliding seat axial rotation.

Still further preferably, the device further comprises a main shaft, a rotating shaft, a sleeve, a first driving wheel and a second driving wheel; the rotating shaft is arranged on the movable seat along the rotating axial direction of the clamping part, one end of the rotating shaft is connected to the movable seat in a shaft connection mode, the other end of the rotating shaft extends towards the other movable seat, and the clamping part is arranged at the end part of the rotating shaft; the first driving wheel is arranged at one end of the rotating shaft far away from the other movable seat and can synchronously and axially rotate along with the rotating shaft; the main shaft is arranged on the platform along the rotating axial direction of the clamping part, and two ends of the main shaft are connected with the platform shaft; the sleeve is sleeved on the main shaft and can synchronously and axially rotate along with the main shaft, and the sleeve can move along the main shaft; the second driving wheel is sleeved on the sleeve and can rotate along with the sleeve in a synchronous axial direction and move along with the sleeve in a synchronous mode, and the second driving wheel is in transmission connection with the first driving wheel belt.

Further preferably, the device also comprises a fixed seat and a connecting rod; the fixed seat is arranged on the main shaft, a sleeve penetrates through the fixed seat, and the fixed seat can synchronously move on the main shaft along with the sleeve; the connecting rod is fixedly connected between the movable seat and the fixed seat and enables the movable seat and the fixed seat to move synchronously.

Still more preferably, the driving device further comprises an output mechanism, a third driving wheel and a fourth driving wheel; the output mechanism is stably arranged on the platform and is provided with an output shaft, and a third driving wheel is arranged on the output shaft; the fourth driving wheel is sleeved on the main shaft and can synchronously and axially rotate along with the main shaft, and the fourth driving wheel is in belt transmission connection with the third driving wheel.

On the basis of the technical scheme, the device preferably further comprises a support and a butting part; the bracket is arranged on the platform; the abutting part is arranged on the support and is positioned right above the battery cell, the abutting part can move relative to the platform along the direction vertical to the surface of the platform, and the surface of the abutting part facing the platform abuts against a diaphragm wrapped outside the battery cell.

More preferably, the supporting part comprises a movable part, a roller and a roller; the movable part is arranged on the bracket and can move relative to the platform along the direction vertical to the surface of the platform; the roller is arranged on the movable part along the rotating axial direction of the clamping part, and two ends of the roller are connected to the movable part through shafts; the roller sleeve is arranged on the roller and can synchronously rotate along with the roller, and the wheel surface of the roller is abutted against the diaphragm wrapped outside the battery cell.

The utility model discloses an electricity core diaphragm parcel mechanism has following beneficial effect for prior art:

(1) The utility model discloses a set up signal transmission and receiving element by electric core, monitor whether the diaphragm coils the parcel and takes place the mistake when outside electric core, if take place the dislocation, then received signal surpasses or is less than and predetermineeing the scope to can accurately discover the diaphragm and take place the dislocation condition.

(2) The utility model discloses set up clamping part and beam pole homoenergetic translation to can remove the direction of travel that the clamping part adjusted the diaphragm when the dislocation takes place in the diaphragm coiling, thereby eliminate the problem of diaphragm dislocation.

(3) The utility model discloses set up the gyro wheel directly over electric core and rotate and support all the time along the clamping part and press on the diaphragm to avoid the diaphragm to produce the fold at coiling in-process surface, and then avoid the diaphragm to advance the condition that takes place the dislocation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a cell membrane wrapping mechanism of the present invention;

fig. 2 is a side view of the cell separator wrapping mechanism of the present invention;

fig. 3 is another side view of the cell membrane wrapping mechanism of the present invention;

fig. 4 is a schematic top view of the battery cell of the present invention normally wrapping the separator;

fig. 5 is a schematic plan view of the dislocation of the battery cell wrapping diaphragm of the present invention.

In the figure: 1. a platform; 2. a clamping portion; 3. a beam; 4. a signal transmitting unit; 5. a signal receiving unit; 6. a strut; 7. a guide rail; 8. a movable seat; 9. a main shaft; 10. a rotating shaft; 11. a sleeve; 12. a first driving wheel; 13. a second driving wheel; 14. a fixed seat; 15. a connecting rod; 16. an output mechanism; 17. a third driving wheel; 18. a fourth driving wheel; 19. a support; 20. a butting part; 201. a movable portion; 202. a roller; 203. and (4) a roller.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, combine fig. 2, fig. 4 and fig. 5, the utility model discloses an electricity core diaphragm parcel mechanism, including platform 1 and two clamping part 2 of setting on platform 1, electric core both ends and along the synchronous axial rotation of same axis can be carried to two clamping part 2, and diaphragm one end sets up on electric core and the other end extends towards the direction of keeping away from electric core, and the diaphragm can rotate and wrap up outside electric core along with clamping part 2. In the diaphragm parcel in-process, two clamping part 2 need remain synchronous rotation throughout, if the slew velocity of one of them clamping part 2 is very fast or slower, then can lead to electric core distortion, and then makes the diaphragm parcel take place the dislocation. Simultaneously, in order to accomplish the back at the diaphragm parcel, thereby electric core can be taken off to clamping part 2 can release electric core, consequently need make clamping part 2 retreat for electric core to withdraw from the book needle that inserts clamping part 2 in the diaphragm.

In order to realize the above two actions in the same mechanical mechanism and detect whether the diaphragm is wound and dislocated, the present embodiment includes two beams 3, a signal transmitting unit 4, a signal receiving unit 5, a guide rail 7, a movable seat 8, a main shaft 9, a rotating shaft 10, a sleeve 11, a first driving wheel 12 and a second driving wheel 13.

Wherein, two guide rails 7 are both arranged on the platform 1 and extend along the rotating shaft 10 of the clamping part 2.

Two sliding seats 8 all set up on guide rail 7, and each sliding seat 8 can move along guide rail 7 for platform 1, and the one-to-one sets up clamping part 2 on each sliding seat 8, and clamping part 2 can be for 8 axial rotations of sliding seat. The movable seat 8 moves back and forth, so that the clamping part 2 arranged on the movable seat can realize the function of retreating; the movable seat 8 is driven to move back and forth by an electric cylinder or an air cylinder.

The pivot 10 is along 2 rotation axis 10 of clamping part to setting up on sliding seat 8, and pivot 10 one end coupling is at sliding seat 8, and the pivot 10 other end extends and sets up clamping part 2 on the tip towards another sliding seat 8 to make clamping part 2 can the axial rotation.

The first driving wheel 12 is arranged at one end of the rotating shaft 10 far away from the other movable seat 8 and can synchronously rotate along the axial direction along with the rotating shaft 10.

The main shaft 9 is arranged on the platform 1 along the direction of the rotating shaft 10 of the clamping part 2, and two ends of the main shaft 9 are connected with the platform 1 through shafts; the main shaft 9 plays a role of a linkage shaft, so that the two clamping parts 2 can synchronously rotate under the drive of the same linkage shaft.

The sleeve 11 is sleeved on the main shaft 9 and can synchronously and axially rotate along with the main shaft 9, and the sleeve 11 can move along the main shaft 9. The sleeve 11 is typically connected to the spindle 9 by a flat key, so that the sleeve 11 can rotate with the spindle 9 and can move on the spindle 9.

The second driving wheel 13 is sleeved on the sleeve 11 and can synchronously and axially rotate along with the sleeve 11 and synchronously move along with the sleeve 11, and the second driving wheel 13 is in belt transmission connection with the first driving wheel 12.

By adopting the mechanical matching structure, when the spindle 9 externally drives the lower shaft to rotate, the two sleeves 11 are driven to synchronously rotate, and then the transmission of the second driving wheel 13, the first driving wheel 12 and the rotating shaft 10 is sequentially carried out, so that the two clamping parts 2 synchronously rotate in a shaft manner, and the action of wrapping the battery core by the diaphragm is realized; when the clamping part 2 needs to be retracted, the air cylinder or the electric cylinder pulls the movable seat 8 to move backwards, and then the sleeve 11 is driven to move backwards on the main shaft 9.

Meanwhile, in order to detect the walking direction of the diaphragm and avoid the dislocation of the diaphragm, the two beam rods 3 are symmetrically arranged on one side of the diaphragm facing the platform 1 and one side of the diaphragm far away from the platform 1, the two beam rods 3 are arranged at intervals, and the diaphragm penetrates through the two beam rods 3; wherein, the interval of two beam poles 3 is not less than electric core along 2 radial maximum width in rotation axis 10 lines of clamping part to when 2 axial rotations of clamping part and make the diaphragm twine to wrap up on electric core, the diaphragm can luffing motion along with it, and can not receive blockking of beam pole 3.

The signal transmitting unit 4 and the signal receiving unit 5 are correspondingly arranged on the two beams 3, the signal transmitting unit 4 can generate signals towards the signal receiving unit 5, and the signal receiving unit 5 can receive the signals transmitted by the signal transmitting unit 4. It should be noted that, the signal transmitting unit 4 and the signal receiving unit 5 are both aligned to the edge of one side of the diaphragm, so that a part of the signal transmitted by the signal transmitting unit 4 is blocked by the diaphragm and cannot be received by the signal receiving unit 5, and it can be preset that the signal strength which can be received by the signal receiving unit 5 has a preset range.

However, when the diaphragm is misaligned, the diaphragm may be completely blocked between the signal transmitting unit 4 and the signal receiving unit 5, or the diaphragm may be completely separated from between the signal transmitting unit 4 and the signal receiving unit 5. When the signal intensity received by the signal receiving unit 5 is greater than the preset range, the diaphragm completely leaves between the signal transmitting unit 4 and the signal receiving unit 5; or when the signal intensity received by the signal receiving unit 5 is smaller than the preset range, that is, the diaphragm is completely blocked between the signal transmitting unit 4 and the signal receiving unit 5, the diaphragm is dislocated at this time.

It should be noted that, in the embodiment, only the signal transmitting unit 4 and the signal receiving unit 5 are described, but actually, the embodiment further includes a power supply, a control system, a detecting component, an alarm component, and the like, the detecting component receives the information of the received signal strength transmitted by the signal receiving unit 5, and then determines whether the signal strength is within a preset range, the alarm component performs an audible and visual alarm when the signal strength exceeds or falls below the preset range, and the control system controls the whole system. The above-mentioned control and detection alarm function is the public technology that prior art can realize, because the utility model discloses do not relate to the improvement to this public technology, consequently do not describe power, control system, detection part and alarm part etc. in detail.

Example two:

in the first embodiment, when the diaphragm is displaced, in order to solve the displacement problem of the diaphragm, the two clamping portions 2 are driven to move in the displacement direction of the diaphragm, so that the diaphragm is aligned to solve the displacement problem. At the same time, this also requires adjustment of the positions of the signal transmitting unit 4 and the signal receiving unit 5.

Thus, as shown in fig. 1, in conjunction with fig. 3, a strut 6 is also included.

Wherein, the support rod 6 is arranged on the platform 1 and can move along the rotating shaft 10 of the clamping part 2 relative to the platform 1, two beam rods 3 are arranged on the support rod 6, the position of the beam rods 3 is adjusted by moving the support rod 6, and then the signal transmitting unit 4 and the signal receiving unit 5 are aligned with the edge of the diaphragm again.

Example three:

in the first embodiment, the electric cylinder or the air cylinder can push or pull the movable seat 8 to move back and forth, but cannot drive the sleeve 11 to move on the main shaft 9.

In order to solve the problem of synchronous movement of the movable seat 8 and the sleeve 11, the device further comprises a fixed seat 14 and a connecting rod 15.

The fixing seat 14 is disposed on the main shaft 9, and the sleeve 11 penetrates through the fixing seat 14, so that the sleeve 11 can axially rotate in the fixing seat 14, and the fixing seat 14 can synchronously move on the main shaft 9 along with the sleeve 11.

The connecting rod 15 is fixedly connected between the movable seat 8 and the fixed seat 14, and makes the movable seat 8 and the fixed seat 14 move synchronously.

Example four:

in the first embodiment, the driving device further includes an output mechanism 16, a third driving wheel 17 and a fourth driving wheel 18 for driving the main shaft 9 to rotate.

Wherein, the output mechanism 16 is firmly arranged on the platform 1, the output mechanism 16 has an output shaft, and the output shaft is provided with a third driving wheel 17.

The fourth driving wheel 18 is sleeved on the main shaft 9 and can synchronously and axially rotate along with the main shaft 9, and the fourth driving wheel 18 is in belt transmission connection with the third driving wheel 17.

Example five:

on the basis of the first embodiment, the skilled person finds that one of the reasons for the misalignment of the separator is that the surface of the separator is wrinkled during the process of winding and wrapping the separator on the battery cell.

Therefore, in order to eliminate the wrinkles on the surface of the diaphragm, the device further comprises a bracket 19 and a holding part 20, wherein the holding part 20 comprises a movable part 201, a roller 202 and a roller 203.

Wherein the bracket 19 is arranged on the platform 1; the support 19 is provided with a supporting portion 20, and the supporting portion 20 is located right above the battery cell.

Specifically, the movable portion 201 is provided on the support 19 and is movable relative to the platform 1 in a direction perpendicular to the surface of the platform 1.

The roller 202 is provided on the movable portion 201 along the rotation axis 10 of the clamping portion 2, and both ends of the roller 202 are coupled to the movable portion 201.

The roller 203 is sleeved on the roller 202 and can rotate synchronously with the roller 202, and the wheel surface of the roller 203 is abutted against the diaphragm wrapped outside the battery cell.

Therefore, when the clamping part 2 rotates, the roller 203 is pushed downwards under the self-gravity or by the air cylinder or the electric cylinder, and the roller 203 always presses against and rolls on the surface of the diaphragm, so that the wrinkles on the surface of the diaphragm are flattened.

Example six:

any combination of embodiments one to five is also included in the case where there is no technical conflict.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electricity core diaphragm parcel mechanism, includes platform (1) and two clamping part (2) of setting on platform (1), and electric core both ends and along the synchronous axial rotation of same axis can be carried in two clamping part (2), and diaphragm one end sets up on electric core and the other end extends towards the direction of keeping away from electric core, and the diaphragm can rotate and wrap up outside electric core along with clamping part (2), its characterized in that: the device also comprises two beam rods (3), a signal transmitting unit (4) and a signal receiving unit (5);

the two beam rods (3) are symmetrically arranged on one side, facing the platform (1), of the membrane surface of the membrane and on one side, far away from the platform (1), of the membrane, the two beam rods (3) are arranged at intervals, and the membrane penetrates through the two beam rods (3);

the signal transmitting unit (4) and the signal receiving unit (5) are correspondingly arranged on the two beam rods (3), the signal transmitting unit (4) and the signal receiving unit (5) are aligned to the edge of one side of the diaphragm, the signal transmitting unit (4) can generate signals towards the signal receiving unit (5), and the signal receiving unit (5) can receive signals transmitted by the signal transmitting unit (4).

2. The cell membrane wrapping mechanism of claim 1, wherein: still include branch (6), branch (6) set up on platform (1) and can be for platform (1) along rotation axis (10) of clamping part (2) to removing, set up two roof beam poles (3) on branch (6).

3. The cell membrane wrapping mechanism of claim 1, wherein: the distance between the two beam rods (3) is not less than the maximum radial width of the battery cell along the line of the rotating shaft (10) of the clamping part (2).

4. The cell membrane wrapping mechanism of claim 1, wherein: the device also comprises a guide rail (7) and a movable seat (8);

the two guide rails (7) are arranged on the platform (1) and extend along the rotating shaft (10) of the clamping part (2);

the two movable seats (8) are arranged on a guide rail (7), each movable seat (8) can move along the guide rail (7) relative to the platform (1), clamping parts (2) are correspondingly arranged on each movable seat (8), and the clamping parts (2) can rotate axially relative to the movable seats (8).

5. The cell membrane wrapping mechanism of claim 4, wherein: the device also comprises a main shaft (9), a rotating shaft (10), a sleeve (11), a first driving wheel (12) and a second driving wheel (13);

the rotating shaft (10) is arranged on the movable seat (8) along the rotating shaft (10) of the clamping part (2), one end of the rotating shaft (10) is connected to the movable seat (8) in a shaft mode, the other end of the rotating shaft (10) extends towards the other movable seat (8), and the clamping part (2) is arranged at the end part of the rotating shaft;

the first driving wheel (12) is arranged at one end of the rotating shaft (10) far away from the other movable seat (8) and can synchronously and axially rotate along with the rotating shaft (10);

the main shaft (9) is arranged on the platform (1) along the direction of a rotating shaft (10) of the clamping part (2), and two ends of the main shaft (9) are connected with the platform (1) through shafts;

the sleeve (11) is sleeved on the main shaft (9) and can synchronously and axially rotate along with the main shaft (9), and the sleeve (11) can move along the main shaft (9);

the second driving wheel (13) is sleeved on the sleeve (11) and can rotate along with the sleeve (11) in the synchronous axial direction and move along with the sleeve (11) in the synchronous axial direction, and the second driving wheel (13) is in belt transmission connection with the first driving wheel (12).

6. The cell separator wrapping mechanism of claim 5, wherein: the device also comprises a fixed seat (14) and a connecting rod (15);

the fixing seat (14) is arranged on the main shaft (9), the sleeve (11) penetrates through the fixing seat (14), and the fixing seat (14) can synchronously move on the main shaft (9) along with the sleeve (11);

the connecting rod (15) is fixedly connected between the movable seat (8) and the fixed seat (14) and enables the movable seat (8) and the fixed seat (14) to move synchronously.

7. The cell separator wrapping mechanism of claim 5, wherein: the device also comprises an output mechanism (16), a third driving wheel (17) and a fourth driving wheel (18);

the output mechanism (16) is stably arranged on the platform (1), the output mechanism (16) is provided with an output shaft, and a third driving wheel (17) is arranged on the output shaft;

the fourth driving wheel (18) is sleeved on the main shaft (9) and can rotate along with the main shaft (9) in a synchronous axial direction, and the fourth driving wheel (18) is in belt transmission connection with the third driving wheel (17).

8. The cell separator wrapping mechanism of claim 1, wherein: the device also comprises a bracket (19) and a butting part (20);

the bracket (19) is arranged on the platform (1);

the abutting part (20) is arranged on the support (19) and is positioned right above the battery cell, the abutting part (20) can move relative to the platform (1) along the direction vertical to the surface of the platform (1), and the surface of the abutting part (20) facing the platform (1) abuts against a diaphragm wrapped outside the battery cell.

9. The cell separator wrapping mechanism of claim 8, wherein: the abutting part (20) comprises a movable part (201), a rolling shaft (202) and a roller (203);

the movable part (201) is arranged on the bracket (19) and can move along the direction vertical to the surface of the platform (1) relative to the platform (1);

the roller (202) is arranged on the movable part (201) along the rotating shaft (10) of the clamping part (2), and two ends of the roller (202) are connected to the movable part (201) in a shaft manner;

the roller (203) is sleeved on the roller (202) and can synchronously rotate along with the roller (202), and the wheel surface of the roller (203) abuts against the diaphragm wrapped outside the battery cell.