CN217691274U - Lamination production line - Google Patents

Abstract

The utility model provides a lamination production line belongs to lithium cell manufacturing technical field, include: the device comprises a first sheet-making conveying line and a second sheet-making conveying line; the lamination devices are arranged at intervals corresponding to the second sheet production conveying line in the vertical direction, and a first material taking position is formed on the second sheet production conveying line; transport the transfer chain, be provided with a plurality of along the direction of delivery interval of first film-making transfer chain, form the second on the output of transporting the transfer chain and get the material level, the second gets the material level and first material level branch and locate the relative both sides of lamination device. The utility model provides a pair of lamination production line corresponds the interval with lamination device and second film-making transfer chain and sets up, uses to transport the transfer chain and transports the utmost point lamellar body on with first film-making transfer chain towards the lamination device to use when the lamination device lamination, and, can be provided with a plurality of with the lamination device, with carry out the lamination simultaneously on a plurality of lamination device, the convenient to use of positive pole lamellar body and negative pole lamellar body, the lamination is efficient.

Description

Lamination production line

Technical Field

The utility model relates to a lithium cell manufacturing technology field, concretely relates to lamination production line.

Background

The lamination technology is one of the lithium ion battery manufacturing technologies, and the speed and the precision of the lamination technology directly determine the capacity of a lithium ion production line and the manufacturing cost of a battery cell. The positive and negative pole pieces are required to be alternately stacked in the preparation process of the battery core, and the diaphragm is required to isolate the pole pieces between the positive and negative pole pieces, so that most of the existing lamination production lines adopt a lamination table to be matched with a set of positive and negative pole conveying lines, the positive and negative pole conveying lines are distributed on two sides of the lamination table, and the pole pieces are transferred to the lamination table for lamination through the linear reciprocating motion of a manipulator above the lamination table. Therefore, only one battery cell can be produced in one production process of the lamination production line, and the lamination efficiency is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect of lamination production line lamination inefficiency among the prior art to a lamination production line is provided.

In order to solve the above problem, the utility model provides a lamination production line, include: the first sheet-making conveying line and the second sheet-making conveying line are arranged at intervals; the laminating device is provided with a plurality of laminating devices, each laminating device is arranged at intervals corresponding to the second sheet-making conveying line in the vertical direction, and a first material taking position is formed on the second sheet-making conveying line; transport the transfer chain, follow the direction of delivery interval of first film-making transfer chain is provided with a plurality of, transport the input of transfer chain with first film-making transfer chain the setting of plugging into, the output of transporting the transfer chain is close to the lamination device sets up, it gets the material level to form the second on the output of transfer chain, the second get the material level with first getting the material level and dividing and locating the both sides that the lamination device is relative.

Optionally, the lamination device set up in the top of second film-making transfer chain, and follow the direction of delivery interval of second film-making transfer chain is provided with a plurality of, the output of transporting the transfer chain extends to the top of second film-making transfer chain.

Optionally, first film-making transfer chain with the second film-making transfer chain all cuts conveyor including the pole piece unwinding device, the utmost point ear device of pole piece system and the pole piece that set gradually, the input of transportation transfer chain with the pole piece cuts conveyor and plugs into the setting.

Optionally, the pole piece cutting and conveying device comprises: the driving mechanism is suitable for driving the positive plate material belt or the negative plate material belt; the adsorption conveying belts are arranged at the downstream of the driving mechanism, and a plurality of adsorption conveying belts are arranged at intervals along the driving direction of the driving mechanism; the cutting mechanism is arranged corresponding to the interval between two adjacent adsorption conveying belts; the output conveyer belt sets up in a plurality of adsorb the low reaches of conveyer belt, be suitable for to receive and carry the positive pole lamellar body or the negative pole lamellar body of adsorption and conveying belt output, the input of transporting the transfer chain with the setting of plugging into of output conveyer belt.

Optionally, the output conveyer belt is including the conveyer belt of plugging into, unloading conveyer belt and inspection rejects conveyer belt, the conveyer belt of plugging into with the unloading conveyer belt sets up along the direction of delivery interval, the conveyer belt of plugging into with form the waste material zone of falling between the unloading conveyer belt, the inspection rejects conveyer belt set up in the conveyer belt of plugging into the waste material zone of falling with the top of unloading conveyer belt is followed the direction of delivery extends the setting, the conveyer belt of plugging into with the setting of plugging into of absorption conveyer belt, the input of transporting the conveyer belt with the setting of plugging into of unloading conveyer belt.

Optionally, the adsorption conveying belt comprises an adsorption area and a release area, the adsorption area and the release area are arranged along the conveying direction of the adsorption conveying belt, the release area is arranged on two sides of the adsorption area, and the connection conveying belt has a first conveying state with the same conveying speed as the adsorption conveying belt and a second conveying state with the conveying speed greater than the conveying speed of the adsorption conveying belt.

Optionally, the lamination production line further comprises a post-processing line disposed downstream of the lamination device, the lamination device and the post-processing line being provided with a transfer device therebetween.

Optionally, the post-processing line comprises a hot-pressing separation device, and the hot-pressing separation device can receive the battery cells transported by the transport device.

Optionally, the transportation transfer chain includes first conveyer belt and second conveyer belt, the input of first conveyer belt with the setting of plugging into of unloading conveyer belt, the output of first conveyer belt with the setting of plugging into of the input of second conveyer belt, the output of second conveyer belt with the lamination device corresponds the setting, the second is got the material position and is located the output of second conveyer belt, the unloading conveyer belt is suitable for the first face of adsorbing positive pole lamellar body or negative pole lamellar body, first conveyer belt is suitable for the second face of adsorbing positive pole lamellar body or negative pole lamellar body, the second conveyer belt is suitable for the first face of adsorbing positive pole lamellar body or negative pole lamellar body, first face with the second face is relative.

Optionally, the lamination device comprises: a stage stacking mechanism; the positive electrode deviation rectifying mechanism and the negative electrode deviation rectifying mechanism are respectively arranged at two sides of the stacking platform mechanism, the positive electrode deviation rectifying mechanism is arranged close to the second material taking position, and the negative electrode deviation rectifying mechanism is arranged close to the first material taking position; the feeding mechanism is movably arranged and is suitable for feeding the positive plate body on the positive electrode deviation rectifying mechanism and the negative plate body on the negative electrode deviation rectifying mechanism to the stacking mechanism; and the swinging discharging mechanism is arranged corresponding to the platform stacking mechanism and is suitable for driving the diaphragm to reciprocate.

The utility model has the advantages of it is following:

1. the utility model provides a pair of lamination production line corresponds the spaced setting with the second film-making transfer chain with the lamination device in vertical direction, uses to transport the transfer chain and transports the utmost point lamellar body on with first film-making transfer chain towards the lamination device to use when the lamination device lamination, and, can be provided with the lamination device a plurality of, with carry out the lamination simultaneously on a plurality of lamination device, the convenient to use of positive pole lamellar body and negative pole lamellar body, the lamination is efficient.

2. The utility model provides a pair of lamination production line is provided with the pole piece and cuts conveyor, utilizes actuating mechanism and absorption conveyer belt drive pole piece material to take the motion, makes the pole piece material take to set up in succession on a plurality of adsorbs the conveyer belt, then, utilizes cutting mechanism to take the pole piece material to cut off between adjacent two absorption conveyer belts, consequently, can take the disposable cutting of pole piece material to form a plurality of polar plate bodies to, utilize the transport of output conveyer belt realization a plurality of polar plate bodies, improved the cutting efficiency and the transport efficiency of pole piece.

3. The utility model provides a pair of lamination production line utilizes the conveyer belt of plugging into, rejects conveyer belt and the two sides of unloading conveyer belt alternating antipodal lamellar body to adsorb, can remove dust to the relative two sides of antipodal lamellar body.

4. The utility model provides a pair of lamination production line utilizes the inspection rejects conveyer belt can carry unqualified pole piece body to the broken vacuum of corresponding waste material falling zone department to reject unqualified pole piece body, and enough transport to the unloading conveyer belt by the conveyer belt of plugging into to qualified pole piece physical stamina, the inspection rejects and the transport of pole piece body are simple and convenient.

5. The utility model provides a pair of lamination production line, in the pole piece body by adsorbing the conveyer belt to the conveyer belt transportation process of plugging into, the conveyer belt of plugging into keeps the same conveying speed with adsorbing the conveyer belt, guarantees to adsorb the conveyer belt and the conveyer belt of plugging into can not produce the pole piece body and drag, guarantees pole piece body quality, breaks away from the adsorption zone back of adsorbing the conveyer belt at the pole piece body, and the conveyer belt of plugging into carries with higher speed to increase the interval between the adjacent pole piece body, make preparation for follow-up lamination process uses the pole piece body.

6. The utility model provides a pair of lamination production line through setting up hot pressing separator, can cut out the electric core when carrying out the hot pressing to electric core and form a plurality of electric core monomer, and electric core production efficiency is high.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 schematic diagram illustrating an overall structure of a lamination production line according to an embodiment of the present invention;

fig. 2 shows a schematic view of a part of the structure of a lamination production line provided by an embodiment of the present invention;

fig. 3 shows a schematic overall structure diagram of a pole piece cutting and conveying device provided by an embodiment of the present invention;

fig. 4 shows a schematic structural diagram of an adsorption conveyor belt provided by an embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a part of a pole piece cutting and conveying device provided by an embodiment of the present invention;

fig. 6 shows a schematic structural diagram of an output conveyor belt provided by an embodiment of the present invention;

fig. 7 is a schematic structural view of a die cutting roller mechanism according to an alternative embodiment of the present invention;

fig. 8 shows a first schematic structural diagram of a pole piece material strap, a pole piece body and a pole piece unit provided by an embodiment of the present invention;

fig. 9 shows a second schematic structural diagram of the pole piece material strap, the pole piece body and the pole piece unit provided by the embodiment of the present invention.

Description of reference numerals:

100. a first sheet making conveying line; 200. a second sheet making conveying line; 210. a first material taking position; 300. a transfer conveyor line; 310. a second material taking position; 320. a first conveyor belt; 330. a second conveyor belt; 400. a post-processing line; 500. a positive plate material belt; 510. a positive electrode sheet body; 511. a positive electrode sheet unit; 600. a negative plate material belt; 610. a negative electrode sheet; 611. a negative electrode sheet unit; 10. a lamination device; 11. a stage stacking mechanism; 12. a positive pole deviation rectifying mechanism; 13. a cathode deviation rectifying mechanism; 20. a pole piece unwinding device; 30. a pole piece tab making device; 40. a pole piece cutting and conveying device; 41. a drive mechanism; 411. a roller body; 42. adsorbing the conveyer belt; 421. an adsorption zone; 422. a release region; 423. a belt body; 424. a conveying roller; 43. a cutting mechanism; 431. a support table; 432. a cutting section; 44. an output conveyor belt; 441. connecting the conveyer belt; 442. blanking a conveying belt; 443. waste-rejecting conveyer belts; 45. a die cutting roller mechanism; 451. a cavity die roller; 4511. cutting edges of the female die; 452. a male die roll; 4521. a convex die cutting edge; 50. a transfer device; 60. a hot-pressing separation device.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood 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 work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

One embodiment of a lamination line, as shown in fig. 1-7, includes: first film-making transfer chain 100, second film-making transfer chain 200, lamination device 10 and transportation transfer chain 300. First film-making transfer chain 100 and second film-making transfer chain 200 are the relative interval setting, and lamination device 10 is provided with a plurality of, and every lamination device 10 corresponds the interval setting with second film-making transfer chain 200 in vertical direction, forms on the second film-making transfer chain 200 first material level 210 of getting. Transport transfer chain 300 and be provided with a plurality of along the direction of delivery interval of first film-making transfer chain 100, transport transfer chain 300's input and the setting of plugging into of first film-making transfer chain 100, transport transfer chain 300's output is close to lamination device 10 and sets up, transports to form the second on transfer chain 300's the output and gets material level 310, and the second is got material level 310 and first material level 210 branch of getting and is located the both sides that lamination device 10 is relative.

It should be noted that, in order to facilitate taking out the materials, the lamination device 10 may be disposed above the second sheet-making conveyor line 200. When the first tabletting conveying line 100 is used for preparing the positive plate body, and correspondingly, the second tabletting conveying line 200 is used for preparing the negative plate body; when first film-making transfer chain 100 is used for the film-making of negative pole piece body, corresponding, second film-making transfer chain 200 is then used for the film-making of positive pole piece body.

It is worth to say that, as shown in fig. 1 and fig. 2, the first production conveying line 100 and the second production conveying line 200 are arranged in parallel to each other, the plurality of transfer conveying lines 300 are arranged in parallel to each other and extend in the same direction, and the first production conveying line 100 and the second production conveying line 200 are perpendicular to each other with the transfer conveying lines 300.

Of course, the transferring conveying line 300 and the first and second sheet-making conveying lines 100 and 200 may be disposed at other included angles.

Correspond the spaced top that sets up in one of them of second film-making transfer chain 200 with lamination device 10, use and transport transfer chain 300 and transport the utmost point lamellar body on first film-making transfer chain 100 towards lamination device 10 to use when lamination device 10 laminates, and, can be provided with a plurality of with lamination device 10, with carry out the lamination on a plurality of lamination device 10 simultaneously, positive pole lamellar body 510 and negative pole lamellar body 610's convenient to use, the lamination is efficient.

In this embodiment, as shown in fig. 1 and fig. 2, lamination device 10 sets up in the top of second film-making transfer chain 200, and is provided with a plurality of along the direction of delivery interval of second film-making transfer chain 200, the input of transporting transfer chain 300 and the setting of plugging into of first film-making transfer chain 100, the output of transporting transfer chain 300 extends to the top of second film-making transfer chain 200, and the output of transporting transfer chain 300 corresponds the setting with lamination device 10 on the direction of delivery of second film-making transfer chain 200, first material level 210 of getting sets up on second film-making transfer chain 200 and is located the one side that lamination device 10 kept away from the output of transporting transfer chain 300.

It should be noted that, referring to fig. 1 and fig. 2, along the conveying direction of the second sheet-making conveying line 200, the output end (the second material taking position 310) of the transferring conveying line 300, the lamination device 10 and the first material taking position 210 are sequentially arranged at intervals.

It should be further noted that, referring to fig. 1 and 2, a plurality of lamination devices 10 are disposed corresponding to the second sheet-making conveyor line 200. In other alternative embodiments, several lamination devices 10 may correspond to the first production conveyor line 100 or the second production conveyor line 200, respectively, and only the transfer conveyor line 300 needs to be correspondingly arranged, and the connection position and the conveying direction of the transfer conveyor line 300 need to be adjusted.

In this embodiment, first film-making transfer chain 100 is anodal film-making transfer chain, and second film-making transfer chain 200 is negative pole film-making transfer chain.

As shown in fig. 1 and fig. 2, each of the first sheet-making conveyor line 100 and the second sheet-making conveyor line 200 includes a pole piece unreeling device 20, a pole piece tab making device 30, and a pole piece cutting and conveying device 40, which are sequentially arranged, and an input end of the transfer conveyor line 300 is connected to the pole piece cutting and conveying device 40.

In the present embodiment, as shown in fig. 3 to 5, the pole piece cutting and conveying device 40 includes a driving mechanism 41, an adsorbing and conveying belt 42, a cutting mechanism 43, and an output conveying belt 44. The driving mechanism 41 is adapted to drive the pole piece material belt to move towards the adsorption conveying belt 42, the adsorption conveying belt 42 is disposed downstream of the driving mechanism 41, and a plurality of adsorption conveying belts 42 are disposed at intervals along the driving direction of the driving mechanism 41. The cutting mechanism 43 is disposed at the interval between two adjacent adsorption conveying belts 42, and the cutting mechanism 43 can cut the pole piece material belt on the adsorption conveying belts 42 to form a plurality of pole piece bodies. The output conveyer belt 44 is arranged at the downstream of the adsorption conveyer belts 42, the output conveyer belt 44 can receive and convey the pole pieces output by the adsorption conveyer belts 42, and the input end of the transfer conveyer line 300 is connected with the output conveyer belt 44.

It should be noted that before the driving mechanism 41 drives the pole piece material strap to move forward, the adsorption conveyor belt 42 is started to have a certain conveying speed, so that the speed of the pole piece material strap conveyed onto the adsorption conveyor belt 42 is the same as the conveying speed of the adsorption conveyor belt 42, and it is ensured that there is no relative movement between the pole piece material strap and the adsorption conveyor belt 42, so as to ensure that the pole piece material strap is not deformed by pulling. When the pole piece tape is about to cover all the adsorption conveying belts 42, the driving speed of the driving mechanism 41 and the conveying speed of the adsorption conveying belts 42 are synchronously decelerated, and when the pole piece tape covers all the adsorption conveying belts 42, the driving mechanism 41 and the adsorption conveying belts 42 stop conveying.

Utilize actuating mechanism 41 and absorption conveyer belt 42 drive pole piece material to take the motion, make the pole piece material area set up in succession on a plurality of adsorbs the conveyer belt 42, then, utilize cutting mechanism 43 to cut off the pole piece material area between two adjacent absorption conveyer belts 42, consequently, can form a plurality of pole piece bodies with the disposable cutting of pole piece material area to, utilize output conveyer belt 44 to realize the transport of a plurality of pole piece bodies, improved the cutting efficiency and the conveying efficiency of pole piece.

As shown in fig. 3, the driving direction of the driving mechanism 41, the conveying direction of the adsorption conveyor 42, and the conveying direction of the discharge conveyor 44 are arranged in the same direction.

It should be further noted that, referring to fig. 3, in the present embodiment, four adsorption conveyor belts 42 are provided, and three cutting mechanisms 43 are provided. When the three cutting mechanisms 43 perform cutting work simultaneously, the pole piece material belt can be cut into three pole piece bodies, and each pole piece body comprises a pole piece unit; when only the cutting mechanism 43 located at the middle position performs the cutting operation, the pole piece material strip may be cut into one pole piece body, and each pole piece body includes two continuous pole piece units. Of course, the number of the adsorption conveying belt 42 and the cutting mechanism 43 may be more, more pole piece bodies may be cut, and each pole piece body may include one or several pole piece units.

In the present embodiment, as shown in fig. 3, the width of each adsorption conveyor belt 42 is the same as the width of the pole piece unit formed by cutting. It should be noted that the width of each adsorption conveying belt 42 may also be an integral multiple (n times), for example, 2 times, 3 times, etc., of the width of each pole piece unit, so that when a plurality of cutting mechanisms 43 work simultaneously, the pole piece material belt may be cut into a plurality of pole piece bodies, and each pole piece body includes n pole piece units.

As shown in fig. 1 and 2, the output conveyor 44 includes a docking conveyor 441, a blanking conveyor 442, and an reject conveyor 443. The connecting conveyor belt 441 and the blanking conveyor belt 442 are arranged at intervals along the conveying direction, a scrap falling area is formed between the connecting conveyor belt 441 and the blanking conveyor belt 442, and the rejecting conveyor belt 443 is arranged above the connecting conveyor belt 441, the scrap falling area and the blanking conveyor belt 442 and extends along the conveying direction. The connecting conveyor belt 441 and the adsorbing conveyor belt 42 are connected, the input end of the transferring conveyor line 300 is connected with the blanking conveyor belt 442 of the first tabletting conveyor line 100, and the first material taking position 210 is arranged on the blanking conveyor belt 442 of the second tabletting conveyor line 200.

It is noted that the reject conveyor 443 is a vacuum conveyor. The reject conveyor 443 has a function of removing the unqualified pole piece bodies and a function of conveying the qualified pole piece bodies.

The unqualified pole piece bodies can be conveyed to the position corresponding to the waste falling area through the waste rejecting conveying belt 443 to be vacuum-broken so as to reject the unqualified pole piece bodies, the qualified pole piece bodies can be transferred to the blanking conveying belt 442 through the connecting conveying belt 441, and the waste rejecting and conveying of the pole piece bodies are simple and convenient.

It should be noted that, referring to fig. 6, the upper surfaces of the connecting conveyor belt 441 and the discharging conveyor belt 442 are conveying surfaces, and the lower surface of the waste-removing conveyor belt 443 is a conveying surface; the connection conveyor belt 441 and the blanking conveyor belt 442 both rotate in the clockwise direction, and the reject conveyor belt 443 rotates in the counterclockwise direction.

The two sides of the electrode sheet body are adsorbed by the connection conveying belt, the waste removing conveying belt and the blanking conveying belt alternately, and the two opposite sides of the electrode sheet body can be dedusted.

As shown in fig. 4, the adsorption conveyor belt 42 includes an adsorption area 421 and a release area 422, the adsorption area 421 and the release area 422 are disposed along the conveying direction of the adsorption conveyor belt 42, and the release areas 422 are disposed on both sides of the adsorption area 421. The transfer conveyor 441 has a first conveyance state in which the conveyance speed of the adsorption conveyor 42 is the same, and a second conveyance state in which the conveyance speed of the adsorption conveyor 42 is higher.

In the pole piece body is by adsorbing the conveyer belt 42 to the conveyer belt 441 of plugging into transportation in-process, the conveyer belt 441 of plugging into keeps the same conveying speed with adsorbing the conveyer belt 42 of plugging into, guarantee that the conveyer belt 42 of adsorbing with the conveyer belt 441 of plugging into can not produce the pole piece body and drag to guarantee pole piece body quality, after the pole piece body breaks away from the adsorption zone 421 that adsorbs the conveyer belt 42, the conveyer belt 441 of plugging into is carried with higher speed, with the interval between the adjacent pole piece body of increase, make preparation for follow-up lamination process uses the pole piece body.

Specifically, in the present embodiment, as shown in fig. 4, the suction conveying belt 42 includes a belt body 423 and a conveying roller 424, the conveying roller 424 is provided in a pair at an interval, and the belt body 423 is wound around the pair of conveying rollers 424. A portion of the belt 423 located between the pair of conveying rollers 424 forms the above-described suction area 421, and a portion of the belt 423 corresponding to the pair of conveying rollers 424 forms the above-described release area 422.

In this embodiment, the connecting conveyor 441 is a vacuum conveyor.

It should be noted that after the cutting is completed, the plurality of adsorbing conveyor belts 42 synchronously convey the plurality of pole pieces forward, and when the pole pieces on the adsorbing conveyor belt 42 close to the connecting conveyor belt 441 are conveyed forward to the connecting conveyor belt 441, the connecting conveyor belt 441 and the adsorbing conveyor belt 42 simultaneously adsorb the pole pieces and convey the pole pieces forward at a synchronous conveying speed. When the tail end of the pole piece body enters the releasing zone 422 from the absorbing zone 421 of the absorbing conveyer belt 42, the connecting conveyer belt 441 keeps absorbing the pole piece body and accelerates to convey forwards, so that a certain distance is formed between the pole piece body and the pole piece body positioned behind the pole piece body.

It should be further noted that when the cutting is completed and the plurality of adsorption conveyor belts 42 convey the plurality of electrode sheets forward, the driving mechanism 41 synchronously drives the pole piece material belts forward, so that the subsequent pole piece material belts are covered on the adsorption conveyor belts 42 again to prepare for the next cutting.

As shown in fig. 3 and 5, the cutting mechanism 43 includes a support base 431 and a cutting portion 432, the support base 431 is located between two adjacent adsorption conveyor belts 42, a support surface of the support base 431 is flush with a conveying surface of the adsorption conveyor belt 42, and the cutting portion 432 is provided corresponding to the support base 431. Support the pole piece material belt in the cutting process through setting up the supporting bench 431, guarantee the cutting stability and the cutting precision in pole piece material belt.

It is noted that the cut-out portion 432 is located directly above the support base 431.

In the present embodiment, the cutting portion 432 is the laser cutting mechanism 43.

Of course, the cutting portion 432 may be other types of cutting devices.

As shown in fig. 3, the driving mechanism 41 includes a pair of roller bodies 411 that are oppositely provided in a spaced-apart pair, and at least one of the pair of roller bodies 411 is a driving roller. The pole piece material belt passes through between the pair of roller bodies 411, is connected with the pair of roller bodies 411 in a rolling manner, and is driven forwards by utilizing the friction force between the roller bodies 411 and the pole piece material belt. Utilize the drive roller to drive the pole piece material area, the drive process is stable.

As another alternative embodiment, the pole piece cutting and conveying device 40 may further include a die-cutting roller mechanism 45, as shown in fig. 7, the die-cutting roller mechanism 45 includes a female die roller 451 and a male die roller 452 which are correspondingly arranged, a female die edge 4511 is arranged on the female die roller 451, a male die edge 4521 is arranged on the male die roller 452, the female die edge 4511 is matched with the male die edge 4521, and the pole piece material belt passes through between the female die roller 451 and the male die roller 452 and is cut and formed through matching of the female die edge 4511 and the male die edge 4521.

It should be noted that, in the present embodiment, the pole piece tapes include the positive pole piece tapes 500 and the negative pole piece tapes 600, the pole piece body includes the positive pole piece 510 and the negative pole piece 610, and the pole piece unit includes the positive pole piece unit 511 and the negative pole piece unit 611.

It should be further noted that, referring to fig. 8 and 9, the positive electrode sheet 510 includes a plurality of continuously disposed positive electrode sheet units 511, and the negative electrode sheet 610 includes a plurality of continuously disposed negative electrode sheet units 611, as shown in fig. 8, a plurality of positive electrode sheet units 511 or a plurality of negative electrode sheet units 611 may be continuously disposed in a row, as shown in fig. 9, a plurality of positive electrode sheet units 511 or a plurality of negative electrode sheet units 611 may be continuously disposed in two rows.

As shown in fig. 2, the transfer conveyor line 300 includes a first conveyor belt 320 and a second conveyor belt 330, an input end of the first conveyor belt 320 is connected to the blanking conveyor belt 442 located on the first flaking conveyor line 100, an output end of the first conveyor belt 320 is connected to an input end of the second conveyor belt 330, an output end of the second conveyor belt 330 is arranged corresponding to the lamination device 10, the blanking conveyor belt 442 is adapted to adsorb a first surface of the positive electrode sheet 510, the first conveyor belt 320 is adapted to adsorb a second surface of the positive electrode sheet 510, the second conveyor belt 330 is adapted to adsorb the first surface of the positive electrode sheet 510, and the first surface and the second surface are opposite surfaces of the positive electrode sheet 510. In this embodiment, the input end of the first conveyor 320 is correspondingly disposed above the blanking conveyor 442, and the output end of the first conveyor 320 is correspondingly disposed above the input end of the second conveyor 330. The positive electrode sheet 510 conveyed by the blanking conveyor 442 can be transported out by the first conveyor 320, and then the positive electrode sheet 510 is positioned on the upper surface of the second conveyor 330 by the second conveyor 330, so that the lamination device 10 can be taken out and used conveniently.

It should be noted that the "docking" arrangement in this embodiment means that the electrode sheet body can be transferred between two conveyor belts.

As shown in fig. 2, the lamination device 10 includes a lamination mechanism 11, a positive electrode deviation rectifying mechanism 12, a negative electrode deviation rectifying mechanism 13, a feeding mechanism and a swinging discharging mechanism. The positive pole deviation rectifying mechanism 12 and the negative pole deviation rectifying mechanism 13 are respectively arranged at two sides of the stacking mechanism 11, the positive pole deviation rectifying mechanism 12 is arranged close to the second material taking position 310, and the negative pole deviation rectifying mechanism 13 is arranged close to the first material taking position 210. The feeding mechanism is movably arranged to convey the positive electrode sheet body 510 and the negative electrode sheet body 610 to the lamination device 10, and the swinging discharging mechanism is correspondingly arranged to the lamination mechanism 11 to drive the diaphragm to reciprocate to realize Z lamination.

It should be noted that when the positive electrode sheet body 510, the separator, and the negative electrode sheet body 610 are stacked, a cell may be formed, and the cell is cut according to the positions of the positive electrode sheet unit 511 and the negative electrode sheet unit 611, and each cell unit formed includes the positive electrode sheet unit 511, the separator, and the negative electrode sheet unit 611 which are stacked.

It should be further noted that, according to the production requirement of the battery cell, the lowermost layer and the uppermost layer of the battery cell stack need to be negative electrode sheets, and therefore, in this embodiment, the lowermost layer and the uppermost layer of the battery cell are negative electrode sheet bodies, and then the lowermost layer and the uppermost layer of the cut battery cell unit are negative electrode sheet units.

In this embodiment, referring to fig. 2, the positive deviation correcting mechanism 12 is located between the output end of the second conveyor belt 330 and one side of the stacking mechanism 11, and the negative deviation correcting mechanism 13 is located between the first material taking position 210 and the other side of the stacking mechanism 11.

It is worth to say that, the positive electrode sheet 510 on the transfer conveying line 300 can be transferred to the positive electrode deviation rectifying mechanism 12 through the feeding mechanism, the negative electrode sheet 610 on the second sheet-making conveying line 200 can be transferred to the negative electrode deviation rectifying mechanism 13 through the feeding mechanism, and the feeding mechanism can also transfer the positive electrode sheet 510 on the positive electrode deviation rectifying mechanism 12 to the stacking mechanism 11, and transfer the negative electrode sheet 610 on the negative electrode deviation rectifying mechanism 13 to the stacking mechanism 11. Or the feeding mechanism is only used for transferring the positive electrode sheet body 510 on the positive electrode deviation rectifying mechanism 12 to the stacking mechanism 11, transferring the negative electrode sheet body 610 on the negative electrode deviation rectifying mechanism 13 to the stacking mechanism 11, and additionally arranging the transferring manipulator to transfer the positive electrode sheet body 510 on the transferring conveying line 300 to the positive electrode deviation rectifying mechanism 12 and transfer the negative electrode sheet body 610 on the second sheet-making conveying line 200 to the negative electrode deviation rectifying mechanism 13.

In this embodiment, the positive electrode deviation rectifying mechanism 12 includes a positive electrode deviation rectifying table, on which a pushing portion is disposed, and the pushing portion can push the positive electrode sheet 510 toward different directions, so that the positive electrode sheet 510 moves to a predetermined position; the negative pole deviation rectifying mechanism 13 includes a negative pole deviation rectifying table, on which a pushing portion is disposed, and the pushing portion can push the negative pole sheet 610 toward different directions, so that the negative pole sheet 610 moves to a predetermined position.

As shown in fig. 1, the lamination line further includes a post-processing line 400, the post-processing line 400 being disposed downstream of the lamination device 10, and a transfer device 50 being disposed between the lamination device 10 and the post-processing line 400. The cells stacked on the stacking device 10 are transferred to the post-processing line 400 by the transfer device 50 for post-processing.

In this embodiment, as shown in fig. 1, the post-processing line 400 is disposed at the tail end of the first sheet-making conveying line 100 and the second sheet-making conveying line 200, and the transferring device 50 includes two gantry robots that are disposed perpendicular to each other, wherein one of the gantry robots extends along the arrangement direction of the plurality of lamination devices 10, and the other gantry robot extends along the conveying direction of the post-processing line 400. Specifically, referring to fig. 1, one of the gantry robots is disposed along the left-right direction in fig. 1, and the other gantry robot is disposed along the up-down direction in fig. 1.

As shown in fig. 1, the post-processing line 400 includes a hot-pressing separation device 60, where the hot-pressing separation device 60 is capable of receiving the battery cells transported by the transportation device 50, performing hot pressing on the battery cells, and cutting the battery cells while performing the hot pressing to form a plurality of battery cell monomers.

As shown in fig. 1, other post-processing devices, such as a gluing device, a two-dimensional code pasting device, etc., may be disposed downstream of the hot-press separation device 60.

When the lamination production line of the embodiment is used, the positive electrode sheet material belt 500 is unreeled by the pole piece unreeling device 20 of the first sheet-making conveying line 100, and forms a positive electrode sheet body 510 by the pole piece pole lug making device 30, the adsorption conveying belt 42 and the cutting mechanism 43 of the first sheet-making conveying line 100, the positive electrode sheet body 510 is conveyed by the connection conveying belt 441, the unqualified positive electrode sheet body 510 is removed by the waste removing conveying belt 443, and the qualified positive electrode sheet body 510 is conveyed to the blanking conveying belt 442; when the positive electrode sheet 510 is conveyed to the connection position between the blanking conveyor 442 and the transfer conveyor line 300, the positive electrode sheet is connected to the first conveyor belt 320 and conveyed toward the lamination device 10 through the second conveyor belt 330. The negative electrode sheet material belt 600 is unreeled through the pole piece unreeling device 20 of the second sheet-making conveying line 200, and forms a negative electrode sheet body 610 through the pole piece tab making device 30, the adsorption conveying belt 42 and the cutting mechanism 43 of the second sheet-making conveying line 200, the negative electrode sheet body 610 is conveyed through the connecting conveying belt 441 and the rejecting conveying belt 443 to reject unqualified negative electrode sheet bodies 610, and the qualified negative electrode sheet bodies 610 are conveyed to the blanking conveying belt 442. The feeding mechanism transports the positive plate body 510 at the output end (second material taking position 310) of the second conveying belt 330 to the positive deviation correcting mechanism 12, transports the negative plate body 610 at the first material taking position 210 on the blanking conveying belt 442 (located on the second sheet conveying line 200) to the negative deviation correcting mechanism 13, and respectively feeds the positive plate body 510 and the negative plate body 610 after the deviation correction to the stacking mechanism 11, and the swinging material feeding mechanism is matched with the diaphragm to perform lamination.

According to the above description, the present patent application has the following advantages:

1. the production line is simple and reasonable in layout, and can be matched with a plurality of laminating devices, so that the plurality of laminating devices can be simultaneously laminated, and the laminating efficiency is improved;

2. the positive electrode sheet body and the negative electrode sheet body are laminated to form the battery cell, and a plurality of battery cell monomers can be formed after the battery cell is subjected to hot pressing and separation, so that the production efficiency is improved;

3. reject can be realized to unqualified pole piece physical stamina, and production process closed-loop control promotes electric core quality.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims (10)

1. A lamination line, comprising:

the first sheet-making conveying line (100) and the second sheet-making conveying line (200) are arranged at intervals relatively;

the stacking device (10) is provided with a plurality of stacking devices (10), each stacking device (10) is arranged at an interval corresponding to the second sheet-making conveying line (200) in the vertical direction, and a first material taking position (210) is formed on the second sheet-making conveying line (200);

transport transfer chain (300), follow the direction of delivery interval of first film-making transfer chain (100) is provided with a plurality of, transport the input of transfer chain (300) with first film-making transfer chain (100) the setting of plugging into, the output of transporting transfer chain (300) is close to lamination device (10) sets up, it gets material level (310) to form the second on the output of transfer chain (300), the second get material level (310) with first material level (210) branch of getting is located lamination device (10) relative both sides.

2. The lamination production line according to claim 1, characterized in that the lamination device (10) is arranged above the second production conveying line (200) and a plurality of lamination devices are arranged at intervals along the conveying direction of the second production conveying line (200), and the output end of the transfer conveying line (300) extends above the second production conveying line (200).

3. The lamination production line according to claim 1 or 2, wherein each of the first sheet-making conveying line (100) and the second sheet-making conveying line (200) includes a pole piece unreeling device (20), a pole piece tab making device (30) and a pole piece cutting and conveying device (40) which are sequentially arranged, and an input end of the transfer conveying line (300) is connected with the pole piece cutting and conveying device (40).

4. A lamination line according to claim 3, characterized in that said pole-piece cutting and conveying device (40) comprises:

a driving mechanism (41) suitable for driving the positive electrode sheet material belt (500) or the negative electrode sheet material belt (600);

the adsorption conveying belts (42) are arranged at the downstream of the driving mechanism (41), and a plurality of adsorption conveying belts (42) are arranged at intervals along the driving direction of the driving mechanism (41);

the cutting mechanism (43) is arranged corresponding to the interval between two adjacent adsorption conveying belts (42);

the output conveyer belt (44) is arranged at the downstream of the adsorption conveyer belt (42) and is suitable for receiving and conveying the positive pole sheet body (510) or the negative pole sheet body (610) output by the adsorption conveyer belt (42), and the input end of the transfer conveyer belt (300) is connected with the output conveyer belt (44).

5. The lamination line according to claim 4, wherein the output conveyor belt (44) comprises a transfer conveyor belt (441), a blanking conveyor belt (442), and a reject conveyor belt (443), the transfer conveyor belt (441) and the blanking conveyor belt (442) being arranged at intervals along the conveying direction, a scrap-dropping zone being formed between the transfer conveyor belt (441) and the blanking conveyor belt (442), the reject conveyor belt (443) being arranged above the transfer conveyor belt (441), the scrap-dropping zone and the blanking conveyor belt (442) and extending along the conveying direction, the transfer conveyor belt (441) being arranged at the transfer with the adsorption conveyor belt (42), and the input end of the transfer conveyor line (300) being arranged at the transfer with the blanking conveyor belt (442).

6. The lamination line according to claim 5, wherein said adsorption conveyor belt (42) comprises an adsorption zone (421) and a release zone (422), said adsorption zone (421) and said release zone (422) being arranged along the conveying direction of said adsorption conveyor belt (42), said release zone (422) being arranged on both sides of said adsorption zone (421), said docking conveyor belt (441) having a first conveying regime identical to the conveying speed of said adsorption conveyor belt (42) and a second conveying regime greater than the conveying speed of said adsorption conveyor belt (42).

7. The lamination line according to claim 1 or 2, further comprising a post-treatment line (400), said post-treatment line (400) being arranged downstream of said lamination device (10), a transfer device (50) being arranged between said lamination device (10) and said post-treatment line (400).

8. The lamination line according to claim 7, wherein the post-processing line (400) comprises a hot-pressing separation device (60), the hot-pressing separation device (60) being able to receive the cells transferred by the transfer device (50).

9. The lamination production line according to claim 5, wherein the transfer conveyor line (300) comprises a first conveyor belt (320) and a second conveyor belt (330), an input end of the first conveyor belt (320) is connected to the blanking conveyor belt (442), an output end of the first conveyor belt (320) is connected to an input end of the second conveyor belt (330), an output end of the second conveyor belt (330) is arranged corresponding to the lamination device (10), the second material taking position (310) is arranged at an output end of the second conveyor belt (330), the blanking conveyor belt (442) is adapted to adsorb a first face of the positive sheet body (510) or the negative sheet body (610), the first conveyor belt (320) is adapted to adsorb a second face of the positive sheet body (510) or the negative sheet body (610), the second conveyor belt (330) is adapted to adsorb a first face of the positive sheet body (510) or the negative sheet body (610), and the first face and the second face are opposite.

10. The lamination line according to claim 1 or 2, wherein said lamination device (10) comprises:

a stacking mechanism (11);

the positive pole deviation rectifying mechanism (12) and the negative pole deviation rectifying mechanism (13) are respectively arranged on two sides of the stacking mechanism (11), the positive pole deviation rectifying mechanism (12) is arranged close to the second material taking position (310), and the negative pole deviation rectifying mechanism (13) is arranged close to the first material taking position (210);

the feeding mechanism is movably arranged and is suitable for feeding the positive electrode sheet body (510) on the positive electrode deviation rectifying mechanism (12) and the negative electrode sheet body (610) on the negative electrode deviation rectifying mechanism (13) to the stacking mechanism (11);

and the swinging discharging mechanism is arranged corresponding to the platform stacking mechanism (11) and is suitable for driving the diaphragm to reciprocate.

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