CN114784386A

CN114784386A - Lamination equipment and lamination method

Info

Publication number: CN114784386A
Application number: CN202210473605.7A
Authority: CN
Inventors: 鲁树立; 王庆祎; 唐永昌; 吴望谱
Original assignee: SHENZHEN GREENSUN TECHNOLOGY CO LTD
Current assignee: Shenzhen Greensheng Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-07-22
Anticipated expiration: 2042-04-29
Also published as: WO2023207691A1; CN114784386B

Abstract

The invention discloses lamination equipment and a lamination method, wherein the lamination equipment comprises an unreeling mechanism, a first lamination table, a positive plate feeding mechanism and a negative plate feeding mechanism, wherein the positive plate feeding mechanism and the negative plate feeding mechanism are positioned at two sides of the first lamination table; the material taking mechanism comprises a clamping jaw assembly, and the clamping jaw assembly is used for clamping the semi-finished lamination products on the first lamination table and placing the clamped semi-finished lamination products on the second lamination table; the second lamination station is used for placing the lamination semi-finished product and for pressing the lamination semi-finished product. The invention saves time and improves the lamination efficiency.

Description

Lamination equipment and lamination method

Technical Field

The invention relates to the technical field of lithium ion battery cell lamination, in particular to lamination equipment and a lamination method.

Background

At present, when a lithium battery cell is processed by adopting a lamination mode, lamination equipment is generally required to be used.

The conventional lamination device generally comprises an unwinding mechanism 10, a lamination table 20 located on the right side of the unwinding mechanism 10, a positive electrode sheet feeding mechanism and a negative electrode sheet feeding mechanism.

In the lamination, the separator 110 is firstly unwound by the unwinding mechanism 10, then the separator 110 is blown to the left by the blowing mechanism to bend the separator 110 to the left as shown in fig. 1, then the position of the separator 110 is corrected, then the negative electrode sheet feeding mechanism places the negative electrode sheet on the separator 110 of the lamination table 20 as shown in fig. 2, then the positive electrode sheet feeding mechanism places the positive electrode sheet on the separator 110 of the lamination table 20 covering the negative electrode sheet, then the lamination table 20 presses the positive electrode sheet, then the unwinding mechanism 10 unwinds and moves to the right to fold and cover the separator 110 on the positive electrode sheet as shown in fig. 3, then the lamination table 20 releases the positive electrode sheet, then the negative electrode sheet feeding mechanism places the negative electrode sheet on the separator 110 of the lamination table 20 covering the positive electrode sheet, then the lamination table 20 presses the negative electrode sheet, then the unwinding mechanism 10 unwinds and moves to the separator 110 to the left to fold and cover the separator 110 on the negative electrode sheet, as shown in fig. 4, the lamination table 20 releases the negative electrode sheets, and the above steps are repeated until the negative electrode sheet feeding mechanism places the last negative electrode sheet on the separator 110 of the lamination table 20, which covers the last positive electrode sheet, then the lamination table 20 presses the last negative electrode sheet, then the unwinding mechanism 10 unwinds and moves leftward to fold and cover the separator 110 on the last negative electrode sheet, as shown in fig. 5, then the separator 100 is cut by the cutter mechanism 30, and then the last negative electrode sheet is released by the lamination table 20, so that lamination is completed, and the laminated battery cell is as shown in fig. 6.

The lamination mode needs to blow the diaphragm 110 leftwards through the blowing mechanism, is unreliable and unstable, easily causes poor consistency of the lamination of the battery cell, needs to correct the position of the diaphragm 110 after blowing, wastes time and reduces the lamination efficiency.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the lamination equipment and the lamination method, the consistency of the lamination of the battery core is better, the reliability and the stability are realized, the time is saved, and the lamination efficiency is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention provides lamination equipment, which comprises an unreeling mechanism, a first lamination table, a positive plate feeding mechanism and a negative plate feeding mechanism, wherein the positive plate feeding mechanism and the negative plate feeding mechanism are positioned on two sides of the first lamination table; the material taking mechanism comprises a clamping jaw assembly, and the clamping jaw assembly is used for clamping the semi-finished lamination on the first lamination table and placing the clamped semi-finished lamination on the second lamination table; the second lamination table is used for placing the lamination semi-finished products and pressing the lamination semi-finished products; the diaphragm folding mechanism is used for clamping the diaphragm, cutting off the diaphragm and folding and covering the cut diaphragm on the last negative plate of the semi-finished lamination.

As a preferred technical scheme, the diaphragm turnover mechanism comprises a first Z-axis linear module, a turnover mounting plate arranged to the first Z-axis linear module, two first connecting pieces, a cylinder driving plate, a diaphragm pressing plate, a vacuum pressing plate and a clamping cylinder; the two first connecting pieces are respectively arranged on two sides of one surface, close to the material taking mechanism, of the turnover mounting plate in a sliding mode and are arranged oppositely; the air cylinder driving plate is arranged at the top ends of the two first connecting pieces, and the vacuum pressing plate is arranged at the bottom ends of the two first connecting pieces; the diaphragm pressing plate is positioned between the two first connecting pieces and above the vacuum pressing plate, the diaphragm pressing plate is used for pressing a diaphragm to the top end of the vacuum pressing plate, and two ends of the diaphragm pressing plate are arranged on one surface, close to the material taking mechanism, of the turnover mounting plate in a sliding mode through the two second connecting pieces; the clamping cylinder is arranged on the turnover mounting plate and close to one face of the material taking mechanism and located between the diaphragm pressing plate and the air cylinder drive plate, the clamping cylinder is connected with the diaphragm pressing plate and the air cylinder drive plate and used for driving the diaphragm pressing plate and the air cylinder drive plate to move up and down respectively, the air cylinder drive plate can drive the two first connecting pieces to slide up and down on the face of the turnover mounting plate close to the material taking mechanism, and the vacuum pressing plate can be driven to move up and down by the up-and-down sliding of the two first connecting pieces.

Preferably, the top end of the vacuum pressure plate is provided with an air suction hole for adsorbing the diaphragm.

As a preferred technical scheme, the diaphragm folding mechanism further comprises a first hot-melting cutter mounting plate, a second hot-melting cutter mounting plate, a cutter cylinder and a hot-melting cutter for cutting off the diaphragm; the cutter cylinder mounting plate is arranged at the bottom end of one surface, far away from the material taking mechanism, of the turnover mounting plate, the first hot-melting cutter mounting plate is located below the cutter cylinder mounting plate, two ends of the first hot-melting cutter mounting plate are arranged at one surface, far away from the material taking mechanism, of the turnover mounting plate in a sliding mode through two third connecting pieces respectively, the second hot-melting cutter mounting plate is arranged at the bottom end of the first hot-melting cutter mounting plate, and the hot-melting cutters are arranged at the bottom end of the second hot-melting cutter mounting plate; the cutter cylinder sets up the top of cutter cylinder mounting panel and with first hot melt cutter mounting panel is connected, and the cutter cylinder is used for the drive first hot melt cutter mounting panel reciprocates, reciprocating of first hot melt cutter mounting panel can drive second hot melt cutter mounting panel reciprocates, and then can drive the hot melt cutter reciprocates.

As a preferred technical scheme, the second lamination table comprises a first lamination mounting plate, two vertical plates, a bottom plate, a first support plate, a second support plate and a battery cell support plate for placing a lamination semi-finished product; the utility model discloses a lamination mounting panel, including first lamination mounting panel, bottom plate, first backup pad, battery core extension board, two risers set up the top of first lamination mounting panel and be relative setting, the bottom plate sets up the top of two risers, first backup pad and second backup pad set up respectively the both sides on bottom plate top, first backup pad is close to the diaphragm turns over a mechanism, the second backup pad is close to extracting mechanism, the battery core extension board sets up the top of first backup pad and second backup pad, the top of battery core extension board be equipped with the first position of dodging that the lower jaw of clamping jaw assembly corresponds, first dodging be close to extracting mechanism's one end extends to being close to of battery core extension board extracting mechanism's one end, the top of second backup pad be equipped with the first second that corresponds of dodging the position dodges the position.

As a preferred technical scheme, the second lamination table further includes two second lamination mounting plates and two supporting blocks, the two second lamination mounting plates are respectively disposed at the top end of the first lamination mounting plate and are oppositely disposed, the electric core support plate is disposed between the two second lamination mounting plates, the two supporting blocks are respectively disposed at the top ends of the two second lamination mounting plates, two cylinder supports are respectively disposed at one side of the supporting block close to the diaphragm turnover mechanism and one side of the supporting block close to the material taking mechanism, the cylinder supports are provided with upper and lower cylinders, the upper and lower cylinders are connected with a pressing plate mounting plate, the pressing plate mounting plate is disposed above the corresponding cylinder support and is provided with a lamination pressing plate for pressing a semi-finished lamination, the lamination pressing plate is disposed above the electric core support plate, and the upper and lower cylinders are used for driving the corresponding pressing plate mounting plate to move up and down, thereby can drive corresponding lamination clamp plate through the clamp plate mounting panel and reciprocate.

As a preferred technical scheme, two cylinder supports are respectively arranged on one surface of the supporting block, which is close to the diaphragm turnover mechanism, and one surface of the supporting block, which is close to the material taking mechanism, in a sliding manner, the cylinder supports are driven by a front cylinder and a rear cylinder to slide towards a direction close to or away from the electric core supporting plate, the sliding of the cylinder supports can drive the corresponding pressing plate mounting plate to move towards a direction close to or away from the electric core supporting plate, so that the corresponding lamination pressing plate can be driven to move towards a direction close to or away from the electric core supporting plate, and the front cylinder and the rear cylinder are arranged at the top end of the second lamination mounting plate.

As a preferred technical scheme, the material taking mechanism comprises a second Z-axis linear module, a clamping jaw mounting seat arranged on the second Z-axis linear module, a clamping jaw mounting plate, a clamping jaw air cylinder and a clamping jaw assembly; the clamping jaw mounting panel sets up being close to of clamping jaw mount pad the one side of diaphragm turnover mechanism, the clamping jaw cylinder sets up being close to of clamping jaw mounting panel the one side of diaphragm turnover mechanism, clamping jaw assembly is including the last clamping jaw and the lower clamping jaw that are relative setting from top to bottom, it sets up through last clamping jaw installation piece, lower clamping jaw installation piece respectively to go up the clamping jaw and lower clamping jaw the clamping jaw cylinder, the clamping jaw cylinder is used for the drive go up the clamping jaw and lower clamping jaw remove in opposite directions or carry on the back mutually and remove in order to realize centre gripping lamination semi-manufactured goods or release lamination semi-manufactured goods.

As the preferred technical scheme, the upper clamping jaw and the lower clamping jaw are multiple, each upper clamping jaw corresponds to one lower clamping jaw, one end of each upper clamping jaw is arranged on the corresponding upper clamping jaw mounting block, and a clamping plate is arranged at the bottom of the other end of each upper clamping jaw.

A second aspect of the invention provides a lamination method comprising the steps of:

s2, unwinding the diaphragm by an unwinding mechanism, and manually laying the diaphragm on a first lamination table;

s4, placing the negative electrode plate on a diaphragm of a first lamination table by a negative electrode plate feeding mechanism, pressing the negative electrode plate by the first lamination table, unreeling the diaphragm by an unreeling mechanism and moving towards a direction close to a material taking mechanism so as to fold and cover the diaphragm on the negative electrode plate, and releasing the negative electrode plate and moving downwards by the first lamination table;

s6, the positive plate feeding mechanism places the positive plate on the diaphragm, covered on the negative plate, of the first laminating table, then the first laminating table presses the positive plate, then the unreeling mechanism unreels the diaphragm and moves towards the direction far away from the material taking mechanism to fold and cover the diaphragm on the positive plate, and then the first laminating table releases the positive plate;

s8, placing the negative plate on the diaphragm, covered on the positive plate, of the first lamination table by the negative plate feeding mechanism, pressing the negative plate by the first lamination table, unreeling the diaphragm by the unreeling mechanism and moving the diaphragm towards the direction close to the material taking mechanism so as to fold and cover the diaphragm on the negative plate, and then releasing the negative plate by the first lamination table;

s10, repeating the steps S6-S8 until the negative plate feeding mechanism places the last negative plate on the diaphragm of the first laminating table, which covers the last positive plate;

s12, the membrane is unreeled by the unreeling mechanism, meanwhile, the membrane folding mechanism and the material taking mechanism move towards the direction close to the first lamination table, after the membrane folding mechanism and the material taking mechanism reach a preset position, the material taking mechanism continues to move towards the direction close to the first lamination table, when the clamping jaw assembly of the material taking mechanism penetrates through the membrane folding mechanism and reaches a clamping position, the clamping jaw assembly clamps the semi-finished lamination product after the step S10 is completed, then the material taking mechanism drives the semi-finished lamination product and the membrane to move towards the direction of the second lamination table, in the moving process, the semi-finished lamination product and the membrane both penetrate through the membrane folding mechanism, after the semi-finished lamination product reaches the position above the second lamination table, the clamping jaw assembly of the material taking mechanism places the semi-finished lamination on the second lamination table, then the second lamination table presses the semi-finished lamination, and meanwhile, the material taking mechanism and the membrane folding mechanism return to the initial position;

and S14, clamping the diaphragm by the diaphragm folding mechanism, cutting the diaphragm, moving the diaphragm towards the direction close to the material taking mechanism to fold and cover the cut diaphragm on the last negative electrode sheet of the semi-finished lamination, and releasing the semi-finished lamination by the second lamination station, so that lamination is completed.

The beneficial effects of the invention are: compared with the prior art, the invention adds the diaphragm folding mechanism, the second lamination table and the material taking mechanism, removes the air blowing mechanism and the cutter mechanism, when the lamination starts, the diaphragm does not need to be blown leftwards by the air blowing mechanism, so that the diaphragm does not need to be bent leftwards and can be directly laid on the first lamination table, the position of the diaphragm does not need to be corrected, when the last negative plate is placed on the diaphragm of the first lamination table covering the last positive plate, the semi-finished lamination product on the first lamination table is placed on the second lamination table by the material taking mechanism, and the semi-finished lamination product and the diaphragm pass through the diaphragm folding mechanism, so that the diaphragm can be clamped by the diaphragm folding mechanism and the diaphragm can be cut off, and the cut diaphragm can be folded and covered on the last negative plate of the semi-finished lamination product after the diaphragm is cut off, thereby the lamination mode is reliable and stable, the battery core lamination has good consistency, the position of the diaphragm does not need to be corrected, the time is saved, and the lamination efficiency is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a prior art lamination apparatus in a first state of operation;

FIG. 2 is a schematic view of a second state of the prior art lamination apparatus in operation;

FIG. 3 is a schematic view of a third state of the prior art lamination apparatus in operation;

FIG. 4 is a schematic view of a fourth state of the prior art lamination apparatus in operation;

FIG. 5 is a schematic view of a fifth state of the prior art lamination apparatus in operation;

fig. 6 is a schematic diagram of a prior art lamination apparatus after lamination of a completed cell;

FIG. 7 is a schematic structural diagram of a lamination apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic view of a side of the membrane turnover mechanism of the lamination apparatus of FIG. 7 adjacent to the take off mechanism;

FIG. 9 is a schematic illustration of the diaphragm turnover mechanism of the laminating apparatus of FIG. 7 on a side thereof remote from the take off mechanism;

FIG. 10 is a schematic view of a second lamination station of the lamination apparatus of FIG. 7 on a side thereof adjacent to the take off mechanism;

fig. 11 is a schematic view of a second lamination station of the lamination apparatus of fig. 7 on a side thereof adjacent to the membrane folding mechanism;

fig. 12 is a schematic view of a side of a take off mechanism of the lamination apparatus of fig. 7 adjacent to a membrane turnover mechanism;

FIG. 13 is a schematic view of the lamination apparatus shown in FIG. 7 in a first state of operation;

FIG. 14 is a schematic view of the lamination apparatus shown in FIG. 7 in a second state of operation;

FIG. 15 is a schematic view of a third state of the lamination apparatus shown in FIG. 7 in operation;

FIG. 16 is a schematic view of a fourth state of the lamination apparatus shown in FIG. 7 in operation;

FIG. 17 is a schematic illustration of a fifth state of the lamination apparatus shown in FIG. 7 in operation;

FIG. 18 is a schematic illustration of a sixth condition of the lamination apparatus shown in FIG. 7 in operation;

fig. 19 is a schematic view of a laminated cell of the laminating apparatus shown in fig. 7.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts are within the protection scope of the present invention based on the embodiments of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 7, a lamination apparatus according to an embodiment of the present invention includes an unwinding mechanism 10, a first lamination table 20, a positive electrode sheet feeding mechanism, a negative electrode sheet feeding mechanism, a diaphragm folding mechanism 40, a second lamination table 60, and a material taking mechanism 80. The unwinding mechanism 10, the diaphragm folding mechanism 40 and the material taking mechanism 80 are sequentially arranged from left to right and are all arranged to the multi-rotor linear motor 100, so that the unwinding mechanism 10, the diaphragm folding mechanism 40 and the material taking mechanism 80 can be driven by the multi-rotor linear motor 100 to move left and right respectively. The multi-mover linear motor 100 is provided to a support base 102 in the X-axis direction, and both ends of the support base 102 are provided to, for example, a table through two bases 104, respectively. The first lamination table 20 is located between the unwinding mechanism 10 and the diaphragm folding mechanism 40, and the positive plate feeding mechanism and the negative plate feeding mechanism are located on the left side and the right side of the first lamination table 20 respectively. The second lamination station 60 is positioned between the membrane turnover mechanism 40 and the take off mechanism 80. The first lamination stage 20, the second lamination stage 60, the positive electrode sheet feeding mechanism, and the negative electrode sheet feeding mechanism are all provided to, for example, a work stage or the like.

The unwinding mechanism 10 is used for unwinding the separator 110, for folding and covering the separator 110 on the negative electrode sheet on the first lamination stage 20, and for folding and covering the separator 110 on the positive electrode sheet on the first lamination stage 20. The first lamination stage 20 is used for placing the separator 110, the positive electrode sheet, and the negative electrode sheet, and for pressing the positive electrode sheet and the negative electrode sheet. The positive plate feeding mechanism is used for placing the positive plate on the separator 110 of the first lamination table 20 covering the negative plate, and the negative plate feeding mechanism is used for placing the negative plate on the separator 110 of the first lamination table 20 covering the positive plate. The material taking mechanism 80 includes a jaw assembly for gripping the semi-finished lamination on the first lamination station 20 and for placing the gripped semi-finished lamination on the second lamination station 60. The second lamination station 60 is used for placing the lamination blanks and for pressing the lamination blanks. The separator folding-over mechanism 40 is used for holding the separator 110, for cutting the separator 110, and for folding and covering the cut separator 110 on the last negative electrode sheet of the lamination half-finished product.

Wherein, unwinding mechanism 10 mainly includes two and goes up unwinding roller 12 and two and transfer the winding up roller, unreels diaphragm 110 through last unwinding roller 12 and transfer the winding up roller, and unwinding mechanism 10, first lamination platform 20, positive pole piece feed mechanism, negative pole piece feed mechanism's structure are the same with prior art, and its structure is not repeated herein. The positive electrode sheet feeding mechanism and the negative electrode sheet feeding mechanism are not shown in fig. 7.

Specifically, as shown in fig. 8, the diaphragm folding mechanism 40 includes a first Z-axis linear module 42, a T-shaped folding mounting plate 43 provided to the first Z-axis linear module 42, two first connectors 44, a cylinder driving plate 45, a diaphragm pressing plate 46, a vacuum pressing plate 47, and a clamping cylinder 48.

The first Z-axis linear module 42 is disposed to the multi-mover linear motor 100 along the Z-axis direction, and the first Z-axis linear module 42 can move left and right under the driving of the multi-mover linear motor 100, so as to drive the folding mounting plate 43 and the components thereon to move left and right. The turnover mounting plate 43 can move up and down under the driving of the first Z-axis linear module 42, so as to drive the components on the turnover mounting plate 43 to move up and down.

The two first connecting pieces 44 are respectively slidably disposed on two sides of one surface of the turnover mounting plate 43 close to the material taking mechanism 80, and are disposed oppositely. Specifically, the first connector 44 includes an L-shaped connector block 442, a connection column 444 connected to the top end of the L-shaped connector block 442, and a vertical connection plate 446 connected to the bottom end of the L-shaped connector block 442. The L-shaped connecting block 442 is disposed on the sliding block 434a, the sliding block 434a is slidably disposed on the sliding rail 432a, the sliding rail 432a is disposed on a surface of the turnover mounting plate 43 close to the material taking mechanism 80 along the Z-axis direction, and the L-shaped connecting block 442 can slide up and down on the sliding rail 432a through the sliding block 434a, so that the first connecting member 44 can slide up and down on the surface of the turnover mounting plate 43 close to the material taking mechanism 80.

The cylinder driving plate 45 is provided to the top ends of the connection posts 444 of the two first connectors 44, and the vacuum pressing plate 47 is provided to the bottom ends of the vertical connection plates 446 of the two first connectors 44.

The diaphragm platen 46 is located between the vertical connecting plates 446 of the two first connectors 44 and above the vacuum platen 47. The diaphragm pressing plate 46 is arranged in parallel up and down with the vacuum pressing plate 47. The diaphragm press 46 is used to press the diaphragm 110 against the top of the vacuum press 47. The diaphragm press 46 is slidably mounted at each end to a side of the fold-over mounting plate 43 adjacent the take-off mechanism 80 by two second connectors 49. Specifically, the second connection member 49 includes a connection block 494 and a connection column 492 provided to a bottom end of the connection block 494, the bottom end of the connection column 492 being provided to one end of the corresponding diaphragm holder 46. The connecting block 494 is disposed on the sliding block 434b, the sliding block 434b is slidably disposed on the sliding rail 432b, the sliding rail 432b is disposed on a surface of the turnover mounting plate 43 close to the material taking mechanism 80 along the Z-axis direction, and the connecting block 494 can slide up and down on the sliding rail 432b through the sliding block 434b, so that the second connecting member 49 can slide up and down on the surface of the turnover mounting plate 43 close to the material taking mechanism 80.

The clamping cylinder 48 is arranged on one surface, close to the material taking mechanism 80, of the turnover mounting plate 43 and is located between the diaphragm pressing plate 46 and the cylinder driving plate 45, two cylinder shafts of the clamping cylinder 48 are respectively connected with the diaphragm pressing plate 46 and the cylinder driving plate 45 and are used for respectively driving the diaphragm pressing plate 46 and the cylinder driving plate 45 to move up and down, the up and down movement of the cylinder driving plate 45 can drive the two first connecting pieces 44 to slide up and down on one surface, close to the material taking mechanism 80, of the turnover mounting plate 43, the up and down sliding of the first connecting pieces 44 can drive the vacuum pressing plate 47 to move up and down, and the up and down movement of the diaphragm pressing plate 46 can drive the two second connecting pieces 49 to slide up and down on one surface, close to the material taking mechanism 80, of the turnover mounting plate 43. The up-and-down sliding of the first connecting member 44 can guide the up-and-down movement of the vacuum pressing plate 47, so that the up-and-down movement of the vacuum pressing plate 47 is relatively smooth. The up-and-down sliding of the second link 49 can guide the up-and-down movement of the diaphragm pressing plate 46, so that the up-and-down movement of the diaphragm pressing plate 46 can be smooth.

The top end of the vacuum pressing plate 47 is provided with a suction hole 472 for sucking the diaphragm 110. The suction hole 472 is used to connect with a vacuum pumping device. When the diaphragm 110 is pressed against the top end of the vacuum pressing plate 47 by the diaphragm pressing plate 46, the suction holes 472 are evacuated to suck the diaphragm 110, so that the diaphragm 110 can be clamped. The number of the air suction holes 472 is plural, the plurality of air suction holes 472 are uniformly distributed, and the number of the air suction holes 472 can be set according to actual situations.

As shown in fig. 9, the diaphragm folding mechanism 80 further includes a first hot-melt cutter mounting plate 51, a second hot-melt cutter mounting plate 52, a cutter cylinder mounting plate 53, a cutter cylinder 54, and a hot-melt cutter 55 for cutting the diaphragm 110.

The cutter cylinder mounting plate 53 is disposed to the bottom end of the side of the fold-over mounting plate 43 remote from the material extracting mechanism 80. The cutter cylinder mounting plate 53 is provided along the Y-axis direction.

The first hot-melt cutter mounting plate 51 is located below the cutter cylinder mounting plate 53. The first hot-melt cutter mounting plate 51 and the cutter cylinder mounting plate 53 are arranged in parallel up and down. The two ends of the first hot-melting cutter mounting plate 51 are slidably disposed on the side of the turnover mounting plate 43 away from the material taking mechanism 80 through the two third connecting pieces 56. Specifically, the third connecting member 56 includes a connecting block 564 and a connecting rod 562 disposed at the bottom end of the connecting block 564, the bottom end of the connecting rod 562 penetrates through the cutter cylinder mounting plate 53 and is disposed at one end of the corresponding first hot-melting cutter mounting plate 51, the connecting block 564 is disposed at the slider 566, the slider 566 is slidably disposed at the sliding rail 568, the sliding rail 568 is disposed at one side of the turnover mounting plate 43 far away from the material taking mechanism 80 along the Z-axis direction, the connecting block 564 can slide up and down on the sliding rail 568 through the slider 566, and therefore the third connecting member 56 can slide up and down at one side of the turnover mounting plate 43 far away from the material taking mechanism 80.

The second hot-melt cutter mounting plate 52 is provided to the bottom end of the first hot-melt cutter mounting plate 51, and the length direction of the second hot-melt cutter mounting plate 52 is the same as that of the first hot-melt cutter mounting plate 51. The hot-melt cutter 55 is provided to the bottom end of the second hot-melt cutter mounting plate 52, and the length direction of the hot-melt cutter 55 is the same as the length direction of the second hot-melt cutter mounting plate 52.

The cutter cylinder 54 is arranged at the top end of the cutter cylinder mounting plate 53, the cylinder shaft of the cutter cylinder 54 penetrates through the cutter cylinder mounting plate 53 and is connected with the first hot-melting cutter mounting plate 51 for driving the first hot-melting cutter mounting plate 51 to move up and down, the up-and-down movement of the first hot-melting cutter mounting plate 51 can drive the second hot-melting cutter mounting plate 52 to move up and down and drive the two third connecting pieces 56 to slide up and down on the surface of the turnover mounting plate 43, which is far away from the material taking mechanism 80, and further can drive the hot-melting cutter 55 to move up and down. The up-and-down sliding of the third connecting piece 56 can guide the up-and-down movement of the first hot-melting cutter mounting plate 51, so that the up-and-down movement of the first hot-melting cutter mounting plate 51, the second hot-melting cutter mounting plate 52 and the hot-melting cutter 55 can be more stable.

As shown in fig. 10 and 11 in conjunction, the second lamination stage 60 is adjacent to the multi-mover linear motor 100. The second lamination table 60 includes a first lamination mounting plate 62, two vertical plates 63, a bottom plate 64, a first support plate 65, a second support plate 66, a cell support plate 67 for placing a lamination semi-finished product, a module mounting plate 68, a driving motor 69, an X-axis linear module 72, a linear guide rail 73, two second lamination mounting plates 74, and two support blocks 75.

The length direction of the first lamination mounting plate 62 is perpendicular to the length direction of the multi-mover linear motor 100, that is, the first lamination mounting plate 62 is disposed along the Y-axis direction.

Two risers 63 are provided to the top end of the first lamination mounting plate 62 in an opposed arrangement. The two vertical plates 63 are spaced apart along the length of the first lamination mounting plate 62.

A bottom plate 64 is provided to the top ends of the two standing plates 63. The first support plate 65 and the second support plate 66 are respectively arranged at the left side and the right side of the top end of the bottom plate 64, the first support plate 65 is close to the membrane turnover mechanism 40, and the second support plate 66 is close to the material taking mechanism 80. The first support plate 65 and the second support plate 66 are arranged in parallel in the left-right direction. A cell support plate 67 is provided to the top of the first support plate 65 and the second support plate 66. The top of electric core extension board 67 is equipped with the first position 672 of dodging that corresponds with the lower clamping jaw 88 (see fig. 12) of clamping jaw subassembly, and first position 672 of dodging extends along the width direction of electric core extension board 67, and the one end that is close to extracting mechanism 80 of first position 672 of dodging extends to the one end that is close to extracting mechanism 80 of electric core extension board 67. A second avoidance position 662 corresponding to the first avoidance position 672 is arranged at the top end of the second supporting plate 66. First 672 and second 662 relief locations are provided for the lower jaw 88 of the jaw assembly to extend into for ease of placement of the lamination blanks.

The module mount plate 68 is located below the first lamination mount plate 62 and is arranged in parallel up and down with the first lamination mount plate 68. One end of the module mounting plate 68 is mounted to the X-axis linear module 72 and the other end is slidably mounted to a linear guide 73. The X-axis linear module 72 and the linear guide 73 are arranged side by side along the length direction of the module mounting plate 68. The X-axis linear module 72 and the linear guide 73 are provided to, for example, a table or the like along the X-axis direction, and the module mounting plate 68 is movable to the left and right by the X-axis linear module 72. Linear guide rails 73 may provide translational support for module mounting plate 68. The bottom end of the first laminated mounting plate 62 is provided with a guide shaft 71, and the top end of the module mounting plate 68 is provided with a bushing 712 which is slidably fitted with the guide shaft 71. In this embodiment, the number of the guide shafts 71 and the bushings 712 is three, the three guide shafts 71 are uniformly distributed at the bottom end of the first lamination mounting plate 62, and the three bushings 712 are uniformly distributed at the top end of the module mounting plate 68. It will be appreciated that the number of guide shafts 71 and bushings 712 may be set as practical.

A drive motor 69 is provided to the bottom end of module mounting plate 68, with the motor shaft of drive motor 69 passing through module mounting plate 68 and being connected to the bottom end of first lamination mounting plate 62. The first lamination mounting plate 62 can move up and down under the driving of the driving motor 69, so as to drive the two vertical plates 63, the bottom plate 64, the first support plate 65, the second support plate 66 and the battery cell support plate 67 to move up and down.

In the present embodiment, the number of the driving motors 69 is two, and it can be understood that the number of the driving motors 69 can be set according to actual situations. The drive motor 69 may be replaced with a cylinder.

Two second lamination mounting plates 74 are respectively provided to the top ends of the first lamination mounting plates 62 in an opposed arrangement. Two second lamination mount plates 74 are provided side by side along the length of the first lamination mount plate 62. The battery cell support plate 67 and the two vertical plates 63 are located between the two second lamination mounting plates 74.

Two support blocks 75 are provided to the top ends of the two second lamination mounting plates 74, respectively. Two cylinder supports 76 are slidably disposed on a side of the support block 75 adjacent to the membrane folding mechanism 40 and a side of the support block 75 adjacent to the material extracting mechanism 80, respectively. Specifically, one surface of the support block 75 close to the membrane turnover mechanism 40 and one surface close to the material taking mechanism 80 are respectively provided with a slide rail 752 along the Y-axis direction, a slide block 754 is slidably disposed on the slide rail 752, the cylinder support 76 is disposed to the corresponding slide block 754, and the cylinder support 76 can slide on the corresponding slide rail 752 in a direction close to or away from the battery cell support plate 67 through the corresponding slide block 754. In this embodiment, the number of the sliding block 754 and the number of the sliding rail 752 are two, and it can be understood that the number of the sliding block 754 and the number of the sliding rail 752 can be set according to actual situations.

An upper air cylinder 77 and a lower air cylinder 77 are arranged on one side of the air cylinder support 76, the upper air cylinder 77 and the lower air cylinder 77 are arranged along the Z-axis direction, the upper air cylinder 77 and the lower air cylinder 77 are connected with a pressing plate mounting plate 78, and the pressing plate mounting plate 78 is located above the corresponding air cylinder support 76. The top end of the pressing plate mounting plate 78 is provided with an L-shaped lamination pressing plate 79 for pressing a semi-finished lamination, the lamination pressing plate 79 is positioned above the battery cell support plate 67, and the upper and lower air cylinders 77 are used for driving the corresponding pressing plate mounting plate 78 to move up and down, so that the corresponding lamination pressing plate 79 can be driven to move up and down through the pressing plate mounting plate 78.

The cylinder support 76 is driven by a front and rear cylinder 792 to slide in a direction close to or away from the battery core support plate 67. The movement of the cylinder support 76 can drive the corresponding pressing plate mounting plate 78 to move towards the direction close to or away from the cell support plate 67, and further can drive the corresponding lamination pressing plate 79 to move towards the direction close to or away from the cell support plate 67. The front and rear cylinders 792 are provided to the top end of the second lamination mounting plate 74 in the Y-axis direction.

In this embodiment, as shown in fig. 10, a driving block 762 is disposed on a side of the cylinder support 76 close to the material taking mechanism 80, and a front cylinder 792 and a rear cylinder 792 corresponding to the cylinder support 76 are connected to the driving block 762, and a cylinder shaft of the front cylinder 792 and the rear cylinder 792 drives the driving block 762 to move toward a direction close to or away from the cell support plate 67, so that the cylinder support 76 can be driven to slide toward a direction close to or away from the cell support plate 67. As shown in fig. 11, a driving block 762 is disposed on a side of the cylinder support 76 close to the diaphragm folding mechanism 40, and a front and rear cylinder 792 corresponding to the cylinder support 76 has a cylinder shaft connected to the driving block 762, and the front and rear cylinder 792 drives the driving block 762 to move toward or away from the cell support plate 67, so that the cylinder support 76 can be driven to slide toward or away from the cell support plate 67.

As shown in connection with fig. 12, the material taking mechanism 80 includes a second Z-axis linear module 82, a jaw mounting base 84 provided to the second Z-axis linear module 82, a jaw mounting plate 85, a jaw cylinder 86, and the jaw assembly described above.

The second Z-axis linear module 82 is arranged to the multi-mover linear motor 100 along the Z-axis direction, and the second Z-axis linear module 82 can move left and right under the driving of the multi-mover linear motor 100, so as to drive the clamping jaw mounting base 84 and the components thereon to move left and right.

The jaw mount 84 is mounted to the second Z-axis linear module 82 through a connection mount 83. Specifically, a connecting base 83 is provided to the second Z-axis linear module 82, and a jaw mounting base 84 is provided to a bottom end of the connecting base 83. The length direction of the jaw mount 84 is perpendicular to the length direction of the multi-mover linear motor 100, that is, the jaw mount 84 is disposed along the Y-axis direction. The connecting base 83 can move up and down under the driving of the second Z-axis linear module 82, so as to drive the clamping jaw mounting base 84 and the components thereon to move up and down.

A jaw mounting plate 85 is provided to a side of the jaw mounting base 84 adjacent the diaphragm fold over mechanism 40. The jaw cylinder 86 is provided to a face of the jaw mounting plate 85 adjacent to the diaphragm turnover mechanism 40 in the Z-axis direction. The clamping jaw assembly comprises an upper clamping jaw 87 and a lower clamping jaw 88 which are oppositely arranged up and down, the upper clamping jaw 87 and the lower clamping jaw 88 are arranged on a clamping jaw cylinder 86 through an upper clamping jaw mounting block 89 and a lower clamping jaw mounting block 91 respectively, and the clamping jaw cylinder 86 is used for driving the upper clamping jaw 87 and the lower clamping jaw 88 to move in opposite directions or move in opposite directions through the upper clamping jaw mounting block 89 and the lower clamping jaw mounting block 91 so as to clamp a semi-finished lamination product or release the semi-finished lamination product. The upper clamping jaw mounting block 89 and the lower clamping jaw mounting block 91 are respectively arranged in parallel with the clamping jaw mounting seat 84.

In this embodiment, there are two jaw assemblies, and the jaw assemblies are arranged side by side along the length direction of the jaw mounting base 84. Correspondingly, the number of the clamping jaw mounting plates 85, the clamping jaw air cylinder 86, the upper clamping jaw mounting block 89 and the lower clamping jaw mounting block 91 is two.

In this embodiment, the clamping jaw assembly close to the multi-mover linear motor 100 includes three upper clamping jaws 87 and three lower clamping jaws 88. One lower jaw 88 for each upper jaw 87. The three upper jaws 87 and the three lower jaws 88 are respectively arranged side by side along the length directions of the upper jaw mounting block 89 and the lower jaw mounting block 91. One end of the three upper jaws 87 is arranged to the upper jaw mounting block 89, the other end is directed towards the membrane turnover mechanism 40, and the bottom thereof is provided with a clamping plate 92, facilitating clamping of the semi-finished laminate. One end of the three lower jaws 88 is provided with a lower jaw mounting block 91, and the other end faces the membrane turnover mechanism 40.

The jaw assembly remote from the multi-mover linear motor 100 comprises two upper jaws 87, two lower jaws 88. The two upper jaws 87 and the two lower jaws 88 are respectively arranged side by side along the length directions of the upper jaw mounting block 89 and the lower jaw mounting block 91. One end of the two upper jaws 87 is arranged to the upper jaw mounting block 89, the other end is directed towards the membrane turnover mechanism 40, and the bottom thereof is provided with a clamping plate 92, facilitating clamping of the semi-finished laminate. One end of the two lower jaws 88 is provided with a lower jaw mounting block 91, and the other end faces the diaphragm folding mechanism 40.

In order to make the upper clamping jaw 87 and the lower clamping jaw 88 more stable in the process of moving towards or away from each other, two slide rails 852 are respectively arranged on one surface of the clamping jaw mounting plate 85, which is close to the membrane folding mechanism 40, on two sides of the clamping jaw cylinder 86 along the Z-axis direction, and the upper clamping jaw mounting block 89 and the lower clamping jaw mounting block 91 are respectively arranged on the two slide rails 852 through the slide blocks 854 in a sliding manner.

It will be appreciated that the number of jaw assemblies, the number of upper jaws 87 and lower jaws 88 per jaw assembly may be set as appropriate.

A limiting member 93 is arranged above the clamping jaw mounting plate 85, one end of the limiting member 93 is arranged at the top end of the clamping jaw mounting plate 85, and the other end of the limiting member 93 is arranged above the upper clamping jaw mounting block 89 and is arranged at the top end of the clamping jaw air cylinder 86 through a headless buffer screw 94. The limiting piece 93 is arranged to limit the upward movement of the upper clamping jaw mounting block 89.

Based on the lamination device in fig. 7, the invention further provides a lamination method, which specifically comprises the following steps:

s2, the unwinding mechanism 10 unwinds the membrane 110, and then manually lays the membrane 110 on the first lamination table 20, as shown in fig. 13.

S4, the negative electrode sheet feeding mechanism places the negative electrode sheets on the separator 110 of the first lamination table 20, then the first lamination table 20 presses the negative electrode sheets, then the unwinding mechanism 10 unwinds the separator 110 and moves toward the direction close to the material feeding mechanism 80 (i.e., moves to the right) under the driving of the multi-mover linear motor 100 to fold and cover the separator 110 on the negative electrode sheets, as shown in fig. 14, and then the first lamination table 20 releases the negative electrode sheets.

S6, the positive electrode plate feeding mechanism places the positive electrode plate on the separator 110 of the first lamination table 20 covering the negative electrode plate, then the first lamination table 20 presses the positive electrode plate, then the unwinding mechanism 10 unwinds the separator 110 and moves in a direction away from the material taking mechanism 80 (i.e., moves leftward) under the driving of the multi-mover linear motor 100 to fold and cover the separator 110 on the positive electrode plate, as shown in fig. 15, and then the first lamination table 20 releases the positive electrode plate.

S8, the negative electrode sheet feeding mechanism places the negative electrode sheet on the separator 110 of the first lamination table 20 covering the positive electrode sheet, then the first lamination table 20 presses the negative electrode sheet, then the unwinding mechanism 10 unwinds the separator 110 and moves toward the direction close to the material taking mechanism 80 (i.e., moves to the right) under the driving of the multi-mover linear motor 100 to fold and cover the separator 110 on the negative electrode sheet, as shown in fig. 16, and then the first lamination table 20 releases the negative electrode sheet.

S10, repeating steps S6-S8 until the negative electrode sheet feeding mechanism places the last negative electrode sheet on the separator 110 of the first lamination station 20, which is overlaid on the last positive electrode sheet, as shown in fig. 17.

S12, the unreeling mechanism 10 unreels the diaphragm 110, while the diaphragm folding mechanism 40 and the material taking mechanism 80 move toward the first lamination table 20, after reaching the predetermined position, the material taking mechanism 80 continues to move toward the first lamination table 20, when the jaw assembly of the material taking mechanism 80 partially passes through the diaphragm folding mechanism 40 and reaches the clamping position, the jaw assembly clamps the semi-finished lamination after the step S10 is completed, then the material taking mechanism 80 drives the semi-finished lamination and the diaphragm 110 to move toward the second lamination table 20, during the moving process, the semi-finished lamination and the diaphragm 110 both pass through the diaphragm folding mechanism 40, after reaching the position above the second lamination table 60, the jaw assembly of the material taking mechanism 80 places the semi-finished lamination on the second lamination table 60, then the second lamination table 60 presses the semi-finished lamination, and at the same time, the material taking mechanism 80, The diaphragm fold mechanism 40 returns to the initial position as shown in fig. 18.

In step S12, specifically, the first Z-axis linear module 42 of the diaphragm folding mechanism 40 and the second Z-axis linear module 82 of the material taking mechanism 80 are driven by the multi-mover linear motor 100 to move toward the direction close to the first lamination stage 20, so that the whole of the diaphragm folding mechanism 40 and the material taking mechanism 80 moves toward the direction close to the first lamination stage 20, and after the preset position (i.e., the position close to the right side of the first lamination stage 20) is reached, the second Z-axis linear module 82 of the material taking mechanism 80 is driven by the multi-mover linear motor 100 to continue moving toward the direction close to the first lamination stage 20, so that the whole of the material taking mechanism 80 continues moving toward the direction close to the first lamination stage 20. After the jaw assembly of the material taking mechanism 80 partially passes through between the membrane pressing plate 46 and the vacuum pressing plate 47 of the membrane folding mechanism 40 and reaches the clamping position (i.e. at this time, the lower jaw 88 of the jaw assembly is partially located in the avoiding position 22 (see fig. 7) of the first lamination table 20, partially located on the right side of the membrane folding mechanism 40, the upper jaw 87 is partially located above the semi-finished lamination product, partially located on the right side of the membrane folding mechanism 40, and the avoiding position 22 is located below the semi-finished lamination product), the jaw air cylinder 86 drives the upper jaw 87 and the lower jaw 88 to move towards each other through the upper jaw mounting block 89 and the lower jaw mounting block 91 respectively so as to clamp the semi-finished lamination product. Then, the second Z-axis linear module 82 is driven by the multi-mover linear motor 100 to move towards the direction close to the second lamination table 60, so that the material taking mechanism 80 moves towards the direction close to the second lamination table 60 as a whole, and during the moving process, the semi-finished lamination and the diaphragm 110 both pass through between the diaphragm pressing plate 46 and the vacuum pressing plate 47 of the diaphragm folding mechanism 40. After reaching the position above the cell support plate 67 of the second lamination table 60, the second Z-axis linear module 82 drives the connection seat 83 and the jaw mounting seat 84 to move downward, so as to drive the upper jaw 87, the lower jaw 88, the semi-finished lamination and the diaphragm 110 to move downward until the semi-finished lamination is located on the cell support plate 67, and at this time, the lower jaw 88 is located in the corresponding first avoidance position 672 and the second avoidance position 662, so that the semi-finished lamination is placed on the cell support plate 67 of the second lamination table 60. Then, the four front and rear cylinders 792 of the second lamination table 60 respectively drive the four cylinder supports 76 to move towards the direction close to the cell support plate 67, so as to drive the four pressing plate mounting plates 78 and the four lamination pressing plates 79 to move towards the direction close to the cell support plate 67, and after the preset position is reached, the four upper and lower cylinders 77 of the second lamination table 60 respectively drive the four pressing plate mounting plates 78 to move downwards, so as to drive the four lamination pressing plates 79 to move downwards to press the lamination semi-finished product. After the semi-finished lamination is pressed, the clamping jaw cylinder 86 of the material taking mechanism 80 drives the upper clamping jaw 87 and the lower clamping jaw 88 to move back and forth so as to release the semi-finished lamination, and then the second Z-axis linear module 82 and the first Z-axis linear module 42 are driven by the multi-rotor linear motor 100 to return to the initial positions, so that the material taking mechanism 80 and the diaphragm folding mechanism 40 are driven to integrally return to the initial positions.

In the above step S12, before the material taking mechanism 80 continues to move in the direction close to the first lamination table 20, the upper jaw 87 and the lower jaw 88 are driven by the jaw cylinder 86 of the material taking mechanism 80 to move away from each other so that the distance between the upper jaw 87 and the lower jaw 88 is matched with the thickness of the semi-finished lamination, and at the same time, the air cylinder drive plate 45 is driven by the clamping air cylinder 48 to move downward and drive the diaphragm pressing plate 46 to move upward, so that the two first connecting members 44 and the vacuum pressing plate 47 can be driven to move downward, so that the distance between the diaphragm pressing plate 46 and the vacuum pressing plate 47 is matched with the distance between the top end of the upper jaw 87 and the bottom end of the lower jaw 88, so that the upper jaw 87 and the lower jaw 88 partially pass through between the diaphragm separating plate 46 and the vacuum pressing plate 47.

S14, the membrane folding mechanism 40 clamps the membrane 110, cuts the membrane 110, moves (i.e., moves to the right) in a direction close to the material taking mechanism 80 to fold and cover the cut membrane 110 on the last negative electrode sheet of the semi-finished lamination, and then the second lamination station 60 releases the semi-finished lamination, so that the lamination is completed. The completed cell is shown in fig. 19.

In step S14, specifically, in step S12, both the semi-finished lamination and the diaphragm 110 pass through between the diaphragm pressing plate 46 and the vacuum pressing plate 47 of the diaphragm folding mechanism during the process that the material taking mechanism 80 drives the semi-finished lamination and the diaphragm 110 to move toward the second lamination stage 60, so that the diaphragm 110 can be clamped by the diaphragm folding mechanism 40. After the membrane folding mechanism 40 returns to the initial position, the clamping cylinder 48 of the membrane folding mechanism 40 drives the membrane pressing plate 46 to move downward to press the membrane 110 against the top end of the vacuum pressing plate 47, and simultaneously, the suction hole 472 at the top end of the vacuum pressing plate 47 is vacuumized to suck the membrane 110, thereby clamping the membrane 110. After the diaphragm 110 is clamped, the cutter cylinder 54 of the diaphragm folding mechanism 40 drives the first hot-melting cutter mounting plate 51 to move downwards, so as to drive the second hot-melting cutter mounting plate 52 and the hot-melting cutter 55 to move downwards, and therefore, the diaphragm 110 can be cut off through the hot-melting cutter 55. After the separator 110 is cut, the first Z-axis linear module 42 of the separator folding mechanism 40 is driven by the multi-mover linear motor 100 to move toward the material taking mechanism 80, so that the separator folding mechanism 40 integrally drives the cut separator 110 to move toward the material taking mechanism 80, and thus the cut separator 110 can be folded and covered on the last negative electrode plate of the semi-finished lamination product, as shown in fig. 19. Then, the four upper and lower cylinders 77 of the second lamination station 60 respectively drive the four pressing plate mounting plates 78 to move upwards, so as to drive the four lamination pressing plates 79 to move upwards, and then the four front and rear cylinders 792 respectively drive the four cylinder supports 76 to move towards the direction away from the cell support plate 67, so that the release of the lamination semi-finished product is realized. Then the clamping cylinder 48 of the membrane folding mechanism drives the membrane pressing plate 46 to move upwards, and simultaneously the vacuum pumping on the air suction hole 472 of the vacuum pressing plate 47 is stopped, so as to release the membrane 110, and then the first Z-axis linear module 42 is driven by the multi-mover linear motor 100 to move towards the direction away from the material taking mechanism 80, i.e. move leftwards to return to the initial position, so that the whole membrane folding mechanism 40 returns to the initial position, and thus the lamination is completed.

The position of the turnover mounting plate 43 in the Z-axis direction can be adjusted by the first Z-axis linear module 42 of the diaphragm turnover mechanism 40, so that the positions of components on the turnover mounting plate 43, such as the diaphragm pressing plate 46, the vacuum pressing plate 47, the hot-melting cutter 55, and the like in the Z-axis direction can be adjusted, the position of the first lamination mounting plate 62 in the Z-axis direction can be adjusted by the driving motor 69 of the second lamination table 60, so that the positions of components on the first lamination mounting plate 62, such as the cell support plate 67, and the like in the Z-axis direction can be adjusted, the position of the adjustment module mounting plate 68 in the X-axis direction can be adjusted by the X-axis linear module 72 of the second lamination table 60, and the positions of components on the adjustment module mounting plate 68, such as the first lamination mounting plate 62, in the X-axis direction can be adjusted. Through adjusting the position, the various mechanisms can cooperate with each other.

In summary, compared with the prior art, the present invention adds the membrane folding mechanism 40, the second lamination stage 60 and the material taking mechanism 80, and removes the blowing mechanism and the cutter mechanism 30, when lamination starts, the membrane 110 does not need to be blown to the left by the blowing mechanism, so that the membrane 110 does not need to be bent to the left and is directly laid on the first lamination stage 20, and the position of the membrane 110 does not need to be corrected, when the last negative plate is laid on the membrane 110 of the first lamination stage 20 covering the last positive plate, the semi-finished lamination on the first lamination stage 20 is laid on the second lamination stage 60 by the material taking mechanism 80, and the semi-finished lamination and the membrane 110 pass through the membrane folding mechanism 40, so that the membrane folding mechanism 40 can clamp the membrane 110 and can cut the membrane 110, and can fold and cover the cut membrane 110 on the last negative plate of the semi-finished lamination after cutting the membrane 110, thereby accomplish the lamination, this kind of lamination mode is reliable and stable, and the uniformity of electric core lamination is better, need not correct the position of diaphragm 110, has saved the time, has improved lamination efficiency.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A lamination device comprises an unreeling mechanism, a first lamination platform, a positive plate feeding mechanism and a negative plate feeding mechanism, wherein the positive plate feeding mechanism and the negative plate feeding mechanism are positioned at two sides of the first lamination platform,

the film folding device is characterized by further comprising a membrane folding mechanism, a second lamination table and a material taking mechanism, wherein the unwinding mechanism, the membrane folding mechanism and the material taking mechanism are sequentially arranged, the first lamination table is located between the unwinding mechanism and the membrane folding mechanism, and the second lamination table is located between the membrane folding mechanism and the material taking mechanism; the material taking mechanism comprises a clamping jaw assembly, and the clamping jaw assembly is used for clamping the semi-finished lamination on the first lamination table and placing the clamped semi-finished lamination on the second lamination table; the second lamination station is used for placing the lamination semi-finished products and pressing the lamination semi-finished products; the diaphragm folding mechanism is used for clamping the diaphragm, cutting off the diaphragm and folding the cut diaphragm to cover the last negative plate of the semi-finished lamination.

2. The lamination apparatus according to claim 1, wherein the diaphragm folding mechanism comprises a first Z-axis linear module, a folding mounting plate provided to the first Z-axis linear module, two first connectors, a cylinder drive plate, a diaphragm press plate, a vacuum press plate, and a clamping cylinder;

the two first connecting pieces are respectively arranged on two sides of one surface, close to the material taking mechanism, of the turnover mounting plate in a sliding mode and are arranged oppositely; the cylinder driving plate is arranged at the top ends of the two first connecting pieces, and the vacuum pressing plate is arranged at the bottom ends of the two first connecting pieces; the diaphragm pressing plate is positioned between the two first connecting pieces and above the vacuum pressing plate, the diaphragm pressing plate is used for pressing a diaphragm to the top end of the vacuum pressing plate, and two ends of the diaphragm pressing plate are arranged on one surface, close to the material taking mechanism, of the turnover mounting plate in a sliding mode through the two second connecting pieces; the clamping cylinder is arranged on the turnover mounting plate and close to one face of the material taking mechanism and located between the diaphragm pressing plate and the air cylinder drive plate, the clamping cylinder is connected with the diaphragm pressing plate and the air cylinder drive plate and used for driving the diaphragm pressing plate and the air cylinder drive plate to move up and down respectively, the air cylinder drive plate can drive the two first connecting pieces to slide up and down on the face of the turnover mounting plate close to the material taking mechanism, and the vacuum pressing plate can be driven to move up and down by the up-and-down sliding of the two first connecting pieces.

3. The lamination device according to claim 2, wherein the top end of the vacuum platen is provided with a suction hole for sucking the diaphragm.

4. The laminating device according to claim 2, wherein the membrane folding mechanism further comprises a first hot-melt cutter mounting plate, a second hot-melt cutter mounting plate, a cutter cylinder and a hot-melt cutter for cutting the membrane;

the cutter cylinder mounting plate is arranged at the bottom end of one surface, far away from the material taking mechanism, of the turnover mounting plate, the first hot-melting cutter mounting plate is located below the cutter cylinder mounting plate, two ends of the first hot-melting cutter mounting plate are arranged at one surface, far away from the material taking mechanism, of the turnover mounting plate in a sliding mode through two third connecting pieces respectively, the second hot-melting cutter mounting plate is arranged at the bottom end of the first hot-melting cutter mounting plate, and the hot-melting cutters are arranged at the bottom end of the second hot-melting cutter mounting plate; the cutter cylinder is arranged at the top end of the cutter cylinder mounting plate and connected with the first hot-melting cutter mounting plate, the cutter cylinder is used for driving the first hot-melting cutter mounting plate to move up and down, the first hot-melting cutter mounting plate can drive the second hot-melting cutter mounting plate to move up and down, and then the hot-melting cutter can be driven to move up and down.

5. The lamination device according to claim 1, wherein the second lamination station comprises a first lamination mounting plate, two vertical plates, a bottom plate, a first support plate, a second support plate and a cell support plate for placing a lamination semi-finished product;

the utility model discloses a lamination mounting panel, including first lamination mounting panel, bottom plate, first backup pad, battery core extension board, two risers set up the top of first lamination mounting panel and be relative setting, the bottom plate sets up the top of two risers, first backup pad and second backup pad set up respectively the both sides on bottom plate top, first backup pad is close to the diaphragm turns over a mechanism, the second backup pad is close to extracting mechanism, the battery core extension board sets up the top of first backup pad and second backup pad, the top of battery core extension board be equipped with the first position of dodging that the lower jaw of clamping jaw assembly corresponds, first dodging be close to extracting mechanism's one end extends to being close to of battery core extension board extracting mechanism's one end, the top of second backup pad be equipped with the first second that corresponds of dodging the position dodges the position.

6. The lamination apparatus according to claim 5, wherein the second lamination station further comprises two second lamination mounting plates and two support blocks, the two second lamination mounting plates are respectively disposed on top of and opposite to the first lamination mounting plate, the cell support plate is disposed between the two second lamination mounting plates, the two support blocks are respectively disposed on top of the two second lamination mounting plates, two cylinder supports are respectively disposed on one side of the support blocks close to the membrane turnover mechanism and one side of the support blocks close to the material taking mechanism, the cylinder supports are provided with upper and lower cylinders, the upper and lower cylinders are connected with a pressing plate mounting plate, the pressing plate mounting plate is disposed above the corresponding cylinder support and is provided with a lamination pressing plate for pressing a semi-finished lamination, and the lamination pressing plate is disposed above the cell support plate, the upper and lower cylinders are used for driving the corresponding pressing plate mounting plates to move up and down, so that the corresponding lamination pressing plates can be driven to move up and down through the pressing plate mounting plates.

7. The laminating device according to claim 6, wherein two cylinder holders are slidably disposed on a surface of the support block close to the membrane folding mechanism and a surface of the support block close to the material taking mechanism, the cylinder holders are driven by a front cylinder and a rear cylinder to slide in a direction close to or away from the cell support plate, the sliding of the cylinder holders can drive the corresponding pressing plate mounting plate to move in a direction close to or away from the cell support plate, and further drive the corresponding lamination pressing plate to move in a direction close to or away from the cell support plate, and the front cylinder and the rear cylinder are disposed at the top end of the second lamination mounting plate.

8. The laminating apparatus of claim 1, wherein the material extracting mechanism comprises a second Z-axis linear die set, a jaw mount provided to the second Z-axis linear die set, a jaw mount plate, a jaw cylinder, and the jaw assembly;

the clamping jaw mounting panel sets up being close to of clamping jaw mount pad the one side of diaphragm turnover mechanism, the clamping jaw cylinder sets up being close to of clamping jaw mounting panel the one side of diaphragm turnover mechanism, clamping jaw assembly is including the last clamping jaw and the lower clamping jaw that are relative setting from top to bottom, it sets up through last clamping jaw installation piece, lower clamping jaw installation piece respectively to go up the clamping jaw and lower clamping jaw the clamping jaw cylinder, the clamping jaw cylinder is used for the drive go up the clamping jaw and lower clamping jaw remove in opposite directions or carry on the back mutually and remove in order to realize centre gripping lamination semi-manufactured goods or release lamination semi-manufactured goods.

9. The laminating apparatus according to claim 8, wherein said upper and lower jaws are plural in number, one lower jaw for each upper jaw, and one end of said plural upper jaws is provided to said upper jaw mounting block and the bottom of the other end is provided with a clamping plate.

10. A method of lamination, comprising the steps of:

s2, unwinding the diaphragm by an unwinding mechanism, and then manually laying the diaphragm on a first lamination table;

s4, placing the negative electrode plate on the diaphragm of the first lamination table by the negative electrode plate feeding mechanism, pressing the negative electrode plate by the first lamination table, unreeling the diaphragm by the unreeling mechanism and moving the diaphragm towards the direction close to the material taking mechanism so as to fold and cover the diaphragm on the negative electrode plate, and releasing the negative electrode plate by the first lamination table and moving the negative electrode plate downwards;

s10, repeating the steps S6-S8 until the negative plate feeding mechanism places the last negative plate on the diaphragm of the first lamination table, wherein the diaphragm is covered on the last positive plate;

s12, unwinding the diaphragm by the unwinding mechanism, moving the diaphragm folding mechanism and the material taking mechanism towards the direction close to the first lamination table, moving the material taking mechanism towards the direction close to the first lamination table after the diaphragm folding mechanism and the material taking mechanism reach a preset position, clamping the semi-finished lamination after the step S10 is finished by the clamping jaw assembly after the clamping jaw assembly of the material taking mechanism penetrates through the diaphragm folding mechanism and reaches a clamping position, driving the semi-finished lamination and the diaphragm to move towards the second lamination table by the material taking mechanism, penetrating the semi-finished lamination and the diaphragm through the diaphragm folding mechanism in the moving process, placing the semi-finished lamination on the second lamination table by the clamping jaw assembly of the material taking mechanism after the semi-finished lamination reaches the position above the second lamination table, pressing the semi-finished lamination on the second lamination table by the second lamination table, and returning the material taking mechanism and the diaphragm folding assembly to the initial position;

and S14, clamping the diaphragm by the diaphragm folding mechanism, cutting the diaphragm, moving the diaphragm towards the direction close to the material taking mechanism to fold and cover the cut diaphragm on the last negative pole piece of the semi-finished lamination, and releasing the semi-finished lamination by the second lamination table, so that the lamination is completed.