阅读说明：本技术 一种软包锂电芯制造装置及制造方法 (Manufacturing device and manufacturing method for soft package lithium battery cell ) 是由 周杰 何学祥 刘彦兵 于 2021-07-12 设计创作，主要内容包括：本发明公开了一种软包锂电芯制造装置及制造方法。本发明要解决的技术问题是传统的气缸加压容易导致瞬时加压压力过大引起电芯漏液、多数锂电芯堆叠同时加压容易受力不均和加压的过程中锂电芯边侧容易发生形变。本发明提供了一种软包锂电芯制造装置,主要由机箱、加压机构、限位机构和固定机构组成,本发明通过第一电机、传动杆和升降螺杆的配合带动两个限位板同步向上缓慢抬升,使加压板匀速缓慢夹紧,柔性橡胶垫的设置进一步避免瞬时加压压力过大,提高产品的合格率,提高生产效率,通过多个加压板的设置,使多个锂电芯可分开单独放置,加压板再通过与限位板的配合,使其对多个锂电芯同时施加均匀的压力,有效的提高产品质量。(The invention discloses a device and a method for manufacturing a soft package lithium battery cell. The invention aims to solve the technical problems that the traditional air cylinder is easy to cause leakage of a battery cell due to overlarge instantaneous pressurizing pressure, a plurality of lithium battery cells are easy to be stressed unevenly when being stacked and pressurized, and the side of the lithium battery cell is easy to deform in the pressurizing process. The invention provides a device for manufacturing soft-package lithium battery cores, which mainly comprises a case, a pressurizing mechanism, a limiting mechanism and a fixing mechanism, wherein the first motor, a transmission rod and a lifting screw are matched to drive two limiting plates to be synchronously lifted upwards and slowly, so that a pressurizing plate is clamped slowly at a constant speed, the arrangement of a flexible rubber pad further avoids overlarge instantaneous pressurizing pressure, the qualification rate of products is improved, the production efficiency is improved, a plurality of lithium battery cores can be separately and independently placed through the arrangement of a plurality of pressurizing plates, and the pressurizing plates are matched with the limiting plates to simultaneously apply uniform pressure to the plurality of lithium battery cores, so that the product quality is effectively improved.)

1. The utility model provides a soft packet of lithium cell manufacturing installation, includes quick-witted case (1), its characterized in that: spacing chamber (2) and transmission chamber (3) have been seted up in quick-witted case (1), and the top in spacing chamber (2) runs through to the top of quick-witted case (1), the bottom surface fixedly connected with loading system (4) of transmission chamber (3) inner wall, the top fixedly connected with stop gear (5) and layer board (6) of quick-witted case (1), and the top fixedly connected with fixed establishment (7) of layer board (6).

2. The manufacturing device of the soft-package lithium battery cell according to claim 1, characterized in that: the pressurizing mechanism (4) comprises a shaft bracket (401), the shaft bracket (401) is fixedly connected to the transmission cavity (3), two transmission rods (402) are movably inserted in the shaft bracket (401), the two transmission rods (402) are movably connected through a first chain (403), a first motor (404) is fixedly connected to one side of the transmission cavity (3), the output end of the first motor (404) is fixedly connected with one end of one transmission rod (402), four lifting screws (405) are movably inserted in the top of the transmission cavity (3), the top ends of the four lifting screws (405) respectively penetrate through the limiting cavity (2) and are in threaded connection with two limiting plates (406) on the inner side of the limiting cavity, the bottom ends of the four lifting screws (405) are respectively meshed with the two ends of the transmission rods (402), and a pressurizing plate (407) is slidably connected to one side, opposite to the inner wall of the limiting cavity (2), and two sliding pulleys (408) are movably sleeved on the pressurizing plate (407), the two sliding pulleys (408) are respectively and slidably connected in the two limiting plates (406), and the supporting plate (6) is movably inserted in the pressurizing plate (407).

3. The manufacturing device of the soft-package lithium battery cell according to claim 1, characterized in that: the limiting mechanism (5) comprises an installation side plate (501), the installation side plate (501) is fixedly connected to the top of the case (1), one side, opposite to the inner wall of the installation side plate (501), of the installation side plate is movably connected with two transmission screw rods (502), one end of each of the two transmission screw rods (502) penetrates through the installation side plate (501) and extends to the side of the installation side plate, two push plates (503) are arranged on the two transmission screw rods (502), four movable cavities (504) are respectively arranged on one side, opposite to the two push plates (503), in each movable cavity (504) a reset spring (505) is movably sleeved, eight movable cavities (504) are respectively inserted into one group of two clamping plates (506), one side of the installation side plate (501) is respectively and fixedly connected with a second motor (507) and two first gears (508), the two first gears (508) are meshed, the other sides of the two first gears (508) are respectively and fixedly connected with a second gear (509), the output end of the second motor (507) is fixedly connected with one side of one of the second gears (509), and the two second gears (509) are movably connected with one ends of the two transmission screws (502) through two second chains (510).

4. The manufacturing device of the soft-package lithium battery cell according to claim 1, characterized in that: fixing mechanism (7) include mounting bracket (701), and mounting bracket (701) fixed connection is at the top of layer board (6), bottom surface fixedly connected with electron telescopic link (702) on mounting bracket (701) upper portion, and the flexible end fixedly connected with pressure dish (703) of electron telescopic link (702), and the top fixedly connected with of pressure dish (703) and high compression pump (704) of its inside intercommunication.

5. The manufacturing device of the soft-package lithium battery cell according to claim 2, characterized in that: the middle part of the transmission rod (402) is fixedly sleeved with a gear, and the two gears are in transmission connection through a first chain (403).

6. The manufacturing device of the soft-package lithium battery cell according to claim 2, characterized in that: nine through grooves penetrating to the other side of the limiting plate (406) are formed in one side of the limiting plate (406), and the nine through grooves are symmetrically formed in two sides of the limiting plate (406) by taking the center line of the front face of the limiting plate as an axis.

7. The manufacturing device of the soft-package lithium battery cell according to claim 2, characterized in that: the number of the pressurizing plates (407) is nine, flexible rubber pads are fixedly nested on two sides of each pressurizing plate (407), and the elastic modulus of each rubber pad is 2-4 MPa.

8. The manufacturing device of the soft-package lithium battery cell according to claim 2, characterized in that: one side of the pressure plate (407) is provided with a transverse groove penetrating to the other side of the pressure plate, and the supporting plate (6) is movably inserted in the through groove.

9. The device for manufacturing the soft-packaged lithium battery cell according to claim 3, wherein: the transmission screw (502) is composed of a screw fixed connection gear, and symmetrical threads are arranged on two sides of the outer wall of the screw.

10. A lithium battery cell manufacturing method of the soft-packaging lithium battery cell manufacturing device according to any one of claims 1 to 9, comprising the steps of:

s1, firstly, placing eight soft-package lithium battery cores between one sides opposite to nine pressurizing plates (407), driving one of the driving rods (402) to rotate by starting a first motor (404), driving the other driving rod (402) to synchronously rotate through a first chain (403), and driving four lifting screws (405) to synchronously rotate, so that two limiting plates (406) move upwards, and under the cooperation of nine through grooves, the nine pressurizing plates (407) are clamped towards the center at equal intervals at the same time, so that the pressurizing plates respectively apply uniform pressure to two sides of the eight soft-package lithium battery cores;

s2, simultaneously starting a second motor (507), driving two first gears (508) to rotate in a meshed mode, and then driving two transmission screws (502) to rotate synchronously through two second chains (510), so that two push plates (503) synchronously move and clamp two sides of a pressurizing plate (407), and the edge sides of eight soft-package lithium battery cores are subjected to plasticity simultaneously;

s3, finally, starting the electronic telescopic rod (702) to push the pressurizing plate (703) to be attached to the top of the pressurizing plate (407), and simultaneously performing gas stamping plasticity on the gaps among the nine pressurizing plates (407) by the high-pressure air pump (704).

Technical Field

The invention relates to the technical field of soft package lithium battery cell manufacturing, in particular to a device and a method for manufacturing a soft package lithium battery cell.

Background

With the development of modern society, mobile devices such as smart phones, tablet computers and notebook computers have increasingly wide application. The square soft package lithium ion battery has the advantages of high energy density, high working voltage, long service life and the like as an environment-friendly battery, so that the square soft package lithium ion battery is more and more widely applied to various mobile devices, and at present, a bagging process (a pressurizing and heating baking process) is carried out on a polymer lithium ion battery core in the manufacturing process.

The prior art has at least the following problems which are not solved: 1. the existing pressurizing mode is that a cylinder pulls a pull arm to pressurize a lithium battery cell through a clamp, so that the instantaneous pressurizing pressure is easily overlarge, the leakage of the battery cell is caused, and more unqualified products are produced; 2. the existing pressurizing device is used for stacking a plurality of lithium battery cores together and pressurizing at the same time, so that uneven stress among the lithium battery cores is easy to cause and is not beneficial to pressurizing treatment of the lithium battery cores; 3. the soft-packaged lithium battery core is easy to deform due to uneven pressure in the pressurizing process, so that the product quality is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a device and a method for manufacturing a soft-package lithium battery cell, which solve the problems that the instantaneous pressurizing pressure is easily overlarge to cause cell leakage, a plurality of lithium battery cells are easily stressed unevenly when stacked and the side of the lithium battery cell is easily deformed in the pressurizing process in the traditional cylinder pressurizing process.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a soft packet of lithium cell manufacturing installation, includes quick-witted case, quick-witted incasement has seted up spacing chamber and transmission chamber, and the top in spacing chamber runs through to the top of quick-witted case, the bottom surface fixedly connected with loading system of transmission intracavity wall, the top fixedly connected with stop gear and the layer board of machine case, and the top fixedly connected with fixed establishment of layer board.

Preferably, the loading system includes the pedestal, and pedestal fixed connection is in the transmission chamber, the activity interlude has two transfer lines on the pedestal, and two transfer lines pass through first chain swing joint, the first motor of one side fixedly connected with in transmission chamber, and the output of first motor and the one end fixed connection of one of them transfer line, the top activity interlude in transmission chamber has four lifting screw, four lifting screw's top runs through respectively spacing chamber and rather than two inboard limiting plate threaded connection, and four lifting screw's bottom meshes with the both ends of transfer line respectively, the relative one side sliding connection of spacing intracavity wall has the pressure plate, and the activity has cup jointed two slip pulleys on the pressure plate, two slip pulley difference sliding connection is in two limiting plates, the layer board activity interlude is in the pressure plate.

Preferably, the limiting mechanism comprises a mounting side plate which is fixedly connected with the top of the case, one side of the inner wall of the mounting side plate opposite to the mounting side plate is movably connected with two transmission screws, one end of each of the two transmission screws penetrates through the mounting side plate and extends to the side edge of the mounting side plate, two push plates are arranged on the two transmission screws, and one side of the two push plates opposite to each other is provided with four movable cavities, the movable cavities are movably sleeved with return springs, the eight movable cavities are in a group, two clamping plates are respectively inserted in the groups, one side of the mounting side plate is respectively and fixedly connected with a second motor and movably connected with two first gears, the two first gears are meshed, the other sides of the two first gears are fixedly connected with a second gear, the output end of the second motor is fixedly connected with one side of one of the second gears, and the two second gears are movably connected with one ends of the two transmission screw rods through two second chains respectively.

Preferably, the fixing mechanism comprises a mounting frame, the mounting frame is fixedly connected to the top of the supporting plate, an electronic telescopic rod is fixedly connected to the bottom surface of the upper portion of the mounting frame, a pressurizing disc is fixedly connected to the telescopic end of the electronic telescopic rod, and a high-pressure air pump communicated with the inside of the pressurizing disc is fixedly connected to the top of the pressurizing disc.

Preferably, the middle part of the transmission rod is fixedly sleeved with a gear, and the two gears are in transmission connection through a first chain.

Preferably, one side of the limiting plate is provided with nine through grooves penetrating to the other side of the limiting plate, and the nine through grooves are symmetrically arranged on two sides of the limiting plate by taking the center line of the front surface of the limiting plate as an axis.

Preferably, the number of the pressurizing plates is nine, and flexible rubber pads are fixedly nested on two sides of each pressurizing plate; the elastic modulus of the rubber pad is 2-4 MPa, and the rubber pad within the elastic modulus range is selected, so that the elastic buffering performance of the pressurizing plate can be effectively improved, the lithium battery cell is prevented from being damaged, and the plastic effect on the battery cell is influenced when the elastic modulus is too high.

Preferably, one side of the pressure plate is provided with a transverse groove penetrating to the other side of the pressure plate, and the supporting plate is movably inserted in the through groove.

Preferably, the transmission screw consists of a screw fixedly connected with a gear, and two sides of the outer wall of the screw are provided with symmetrical threads.

In addition, the invention also provides a lithium battery manufacturing method by using the soft package lithium battery manufacturing device, which comprises the following steps:

s1, firstly, placing eight soft-packaged lithium battery cores between one sides opposite to nine pressure plates respectively, driving one transmission rod to rotate by starting a first motor, driving the other transmission rod to synchronously rotate through a first chain, and driving four lifting screws to synchronously rotate, so that two limiting plates move upwards, and under the coordination of nine through grooves, the nine pressure plates simultaneously clamp towards the center at equal intervals, so that the nine pressure plates apply uniform pressure to two sides of the eight soft-packaged lithium battery cores respectively;

s2, simultaneously starting a second motor to drive two first gears to rotate in a meshed mode, and then driving two transmission screws to rotate synchronously through two second chains, so that two push plates synchronously displace and clamp two sides of a pressurizing plate, and the sides of eight soft package lithium battery cores are simultaneously subjected to plasticity;

and S3, finally, starting the electronic telescopic rod to push the pressurizing plate to be attached to the top of the pressurizing plate, and simultaneously carrying out gas stamping plasticity on the gaps among the nine pressurizing plates by the high-pressure air pump.

The invention provides a device and a method for manufacturing a soft-package lithium battery cell, which at least have the following beneficial effects:

(1) this soft packet of lithium cell manufacturing installation drives two limiting plates through the cooperation of first motor, transfer line and lifting screw and makes nine increased pressure plates slowly press from both sides tightly at the uniform velocity in step upwards, and the setting of flexible rubber pad further avoids instantaneous pressurization pressure too big, improves the qualification rate of product, improves production efficiency.

(2) This soft packet of lithium cell manufacturing installation makes a plurality of lithium cell detachable place alone through the setting of nine increased pressure boards, and the increased pressure board is again through the cooperation with the limiting plate, makes it exert even pressure, effectual improvement product quality simultaneously to a plurality of lithium cells.

(3) This soft packet of lithium cell manufacturing installation passes through stop gear's setting, makes two splint carry out the centre gripping to the both sides of increased pressure board, makes its both sides to the lithium cell carry out plasticity, and the cooperation through high compression pump and pressurization dish at last can carry out plasticity to the top of lithium cell, avoids the lithium cell to lead to deformation because of the pressurization.

Drawings

FIG. 1 is a front cross-sectional view of a structure of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a side cross-sectional view of the structure of the present invention;

FIG. 4 is a top view of a structural chassis of the present invention;

fig. 5 is a top cross-sectional view of a structural chassis of the present invention.

In the figure: 1. a chassis; 2. a limiting cavity; 3. a transmission cavity; 4. a pressurizing mechanism; 401. a pedestal; 402. a transmission rod; 403. a first chain; 404. a first motor; 405. a lifting screw; 406. a limiting plate; 407. a pressurizing plate; 408. a pulley; 5. a limiting mechanism; 501. installing a side plate; 502. a drive screw; 503. pushing the plate; 504. a movable cavity; 505. a return spring; 506. a splint; 507. a second motor; 508. a first gear; 509. a second gear; 510. a second chain; 6. a support plate; 7. a fixing mechanism; 701. a mounting frame; 702. an electronic telescoping rod; 703. a pressure plate is added; 704. a high-pressure air pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a soft-package lithium battery cell manufacturing device comprises a case 1, a limiting cavity 2 and a transmission cavity 3 are formed in the case 1, the top of the limiting cavity 2 penetrates through the top of the case 1, a pressurizing mechanism 4 is fixedly connected to the bottom surface of the inner wall of the transmission cavity 3, a limiting mechanism 5 and a supporting plate 6 are fixedly connected to the top of the case 1, and a fixing mechanism 7 is fixedly connected to the top of the supporting plate 6.

In the invention, a pressurizing mechanism 4 comprises a shaft bracket 401, the shaft bracket 401 is fixedly connected with a transmission cavity 3, two transmission rods 402 are movably inserted in the shaft bracket 401, the two transmission rods 402 are movably connected through a first chain 403, one side of the transmission cavity 3 is fixedly connected with a first motor 404, the output end of the first motor 404 is fixedly connected with one end of one of the transmission rods 402, four lifting screws 405 are movably inserted in the top of the transmission cavity 3, the top ends of the four lifting screws 405 respectively penetrate through a limiting cavity 2 and are in threaded connection with two limiting plates 406 at the inner side of the limiting cavity, the bottom ends of the four lifting screws 405 are respectively meshed with the two ends of the transmission rods 402, one side opposite to the inner wall of the limiting cavity 2 is slidably connected with a pressurizing plate 407, two sliding pulleys 408 are movably sleeved on the pressurizing plate 407, the two sliding pulleys 408 are respectively slidably connected in the two limiting plates 406, a supporting plate 6 is movably inserted in the pressurizing plate 407, through the setting of nine pressure plates 407, make a plurality of lithium cell detachable place alone, pressure plate 407 through the cooperation with limiting plate 406, make it exert even pressure, effectual improvement product quality simultaneously to a plurality of lithium cells.

In the invention, a limiting mechanism 5 comprises a mounting side plate 501, the mounting side plate 501 is fixedly connected to the top of a chassis 1, one side of the inner wall of the mounting side plate 501 opposite to the inner wall of the mounting side plate is movably connected with two transmission screws 502, one end of each of the two transmission screws 502 penetrates through the mounting side plate 501 and extends to the side of the mounting side plate, two push plates 503 are arranged on the two transmission screws 502, four movable cavities 504 are respectively arranged on one side of the two push plates 503 opposite to each other, a reset spring 505 is movably sleeved in each movable cavity 504, four of the eight movable cavities 504 are a group and are respectively inserted with two clamping plates 506 in a penetrating manner, one side of the mounting side plate 501 is respectively and fixedly connected with a second motor 507 and two first gears 508 which are engaged with each other, the other sides of the two first gears 508 are respectively and fixedly connected with a second gear 509, the output end of the second motor 507 is fixedly connected with one side of one of the second gears 509, the two second gears 509 are movably connected with one ends of the two transmission screws 502 through two second chains 510, and the two clamping plates 506 can clamp two sides of the pressurizing plate 407 through the arrangement of the limiting mechanism 5, so that the two sides of the lithium battery cell are plasticized.

According to the invention, the fixing mechanism 7 comprises a mounting frame 701, the mounting frame 701 is fixedly connected to the top of the supporting plate 6, an electronic telescopic rod 702 is fixedly connected to the bottom surface of the upper part of the mounting frame 701, a pressurizing disc 703 is fixedly connected to the telescopic end of the electronic telescopic rod 702, a high-pressure air pump 704 communicated with the inside of the pressurizing disc 703 is fixedly connected to the top of the pressurizing disc 703, a silica gel rubber pad is fixedly connected to the bottom of the pressurizing disc 703, an air suction hole penetrating through the silica gel rubber pad to the inner cavity of the silica gel rubber pad is formed in the bottom of the silica gel rubber pad, an input pipe of the high-pressure air pump 704 is communicated with the inner cavity of the pressurizing disc 703, and finally, through the matching of the high-pressure air pump 704 and the pressurizing disc 703, the top of a lithium battery core can be subjected to plasticity, and the deformation caused by pressurization of the lithium battery core is avoided.

In the present invention, the middle of the transmission rod 402 is fixedly sleeved with a gear, and the two gears are in transmission connection through the first chain 403, so that the first motor can drive the two transmission rods 402 to synchronously operate.

In the invention, nine through grooves penetrating to the other side of the limiting plate 406 are formed in one side of the limiting plate 406, the nine through grooves are symmetrically formed in the two sides of the limiting plate 406 by taking the center line of the front surface of the limiting plate 406 as an axis, and the two limiting plates 406 are driven to synchronously and slowly lift upwards through the matching of the first motor 404, the transmission rod 402 and the lifting screw 405, so that the nine pressure plates 407 are slowly clamped at a constant speed.

In the invention, the number of the pressurizing plates 407 is nine, and the two sides of each pressurizing plate 407 are fixedly nested with the flexible rubber pads, so that the flexible rubber pads can further avoid overlarge instantaneous pressurizing pressure and improve the qualification rate of products; preferably, the elastic modulus of the rubber pad is 2-4 MPa, the better elastic modulus is 3MPa, and the rubber pad within the elastic modulus range is selected, so that the elastic buffering performance of the pressurizing plate can be effectively improved, the lithium battery cell is prevented from being damaged, but the elastic modulus is too high and the plastic effect on the battery cell is influenced.

In the invention, one side of the pressurizing plate 407 is provided with a transverse groove penetrating to the other side, the supporting plate 6 is movably inserted into the through groove, and the supporting plate 6 is arranged to support and plastically deform the bottom surface of the soft-package lithium battery cell.

In the invention, the transmission screw 502 is composed of screw fixed connection gears, symmetrical threads are arranged on two sides of the outer wall of the screw, and two transmission screws 502 are driven to synchronously rotate by two second chains 510, so that two push plates 503 synchronously displace and clamp two sides of the pressurizing plate 407, and the sides of eight soft-package lithium battery cores are simultaneously subjected to plasticity.

The method for manufacturing the lithium battery cell by using the soft-package lithium battery cell manufacturing device comprises the following steps:

s1, first, placing eight soft-packaged lithium batteries between the sides opposite to the nine pressure plates 407, driving one of the transmission rods 402 to rotate by starting the first motor 404, driving the other transmission rod 402 to rotate synchronously by the first chain 403, and driving the four lifting screws 405 to rotate synchronously, so that the two limiting plates 406 move upwards, and the nine pressure plates 407 simultaneously clamp the centers at equal intervals under the cooperation of the nine through grooves, so that the two pressure plates apply uniform pressure to the two sides of the eight soft-packaged lithium batteries respectively;

s2, the second motor 507 is started simultaneously to drive the two first gears 508 to rotate in a meshed manner, and then the two second chains 510 drive the two transmission screws 502 to rotate synchronously, so that the two push plates 503 synchronously displace and clamp the two sides of the pressure plate 407, and the sides of the eight soft-package lithium battery cells are plasticized simultaneously;

s3, finally, starting the electronic telescopic rod 702 to push the pressurizing plate 703 to be attached to the top of the pressurizing plate 407, and simultaneously performing gas punching plasticity on the gaps among the nine pressurizing plates 407 by the high-pressure air pump 704, wherein the pressure of the high-pressure air pump 704 is preferably 1.2-1.5 MPa.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.