CN215896492U

CN215896492U - Decide lamination device

Info

Publication number: CN215896492U
Application number: CN202122203431.6U
Authority: CN
Inventors: 赵凯; 杨红新; 汪常; 李昆芃
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-22
Anticipated expiration: 2031-09-10

Abstract

The utility model provides a cutting and laminating device which comprises two groups of oppositely arranged feeding and pressing devices. This structure decide lamination device sets up two sets of feed compression fittings, and two sets of feed compression fittings pass through diaphragm feed mechanism and carry the diaphragm to the hot combined mechanism, through negative pole feed mechanism to the hot combined mechanism negative pole piece, through anodal feed mechanism to the hot combined mechanism transport negative pole piece, monomer negative pole piece and monomer positive plate compress tightly at the diaphragm upper and lower surface through two hot pressing roller hot pressing complex, reduce electric core pole piece and remove in-process pole piece dislocation risk. And the two groups of material belts after hot-pressing compounding are conveyed to a rolling mechanism and conveyed to a material passing gap through the rolling mechanism, the two groups of material belts are converged into a converged material belt in the material passing gap, and the converged material belt is stacked in the lamination mechanism. Decide the two sets of material areas of lamination device simultaneously, the lamination is fast, and production efficiency is high, effectively reduces to decide lamination device quantity, practices thrift the cost, reduces and takes up an area of the space.

Description

Decide lamination device

Technical Field

The utility model relates to the technical field of battery production equipment, in particular to a device for cutting and laminating a battery.

Background

The lithium ion equipment technology is a key technology for the development of electric automobiles. The square lamination technology is one of the most advanced lithium ion battery manufacturing technologies at present, wherein the lamination speed directly determines the whole line productivity and the cell manufacturing cost.

At present, Z-type lamination technology is mostly adopted. The global fastest lamination speed of the existing mass production is 0.6 s/piece, the existing lamination device has the disadvantages of slower lamination speed and low production efficiency, and the requirements on the number of equipment are large and the occupied area is large.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects of low lamination speed and low production efficiency of the lamination device in the prior art.

Therefore, the utility model provides a device for cutting and laminating the sheets, which comprises

Two sets of relative feed compression fittings that set up, arbitrary feed compression fittings of group includes:

the membrane feeding mechanism is used for conveying the membrane material belt; and

the negative electrode feeding mechanism and the positive electrode feeding mechanism are arranged on two sides of the diaphragm feeding mechanism, and the negative electrode feeding mechanism is used for conveying a negative electrode sheet material belt; the positive electrode feeding mechanism is used for conveying a positive electrode sheet material belt;

the thermal compound mechanism is arranged at the rear side of the anode feeding mechanism and is provided with two hot pressing rollers which are arranged oppositely;

the rolling mechanism is provided with two rolling rollers which are arranged oppositely and arranged at the rear side of the thermal compounding mechanism at intervals;

the cutting mechanism is arranged between the anode feeding mechanism and the thermal compounding mechanism; the cutting mechanism is used for cutting the positive plate material belt and the negative plate material belt into single pole pieces;

a material passing gap for the two groups of material belts to converge and pass is formed between the rolling rollers of the two groups of material feeding and pressing devices; a lamination mechanism is arranged below the material passing gap; two sets of material areas join through the material clearance and form and join the material area and fold and locate in the lamination mechanism.

Optionally, in the above lamination cutting device, two sets of the feeding and pressing devices are symmetrically arranged.

Optionally, in the cutting and laminating device, a first dust-sticking roller is rotatably arranged on a side edge of each hot-pressing roller; the outer peripheral wall of the first dust sticking roller is attached to the outer peripheral wall of the hot pressing roller.

Optionally, foretell decide lamination device, first sticky dust roller side rotates and is equipped with the second sticky dust roller, the laminating of second sticky dust roller periphery wall first sticky dust roller periphery wall.

Optionally, in the cutting and stacking device, the second dust-binding roller is wrapped with dust-binding paper; the dust-binding paper peripheral wall is attached to the first dust-binding roller peripheral wall, so that the second dust-binding roller is attached to the first dust-binding roller.

Optionally, in the above lamination cutting device, a panoramic detection mechanism is arranged between the thermal compound mechanism and the rolling mechanism.

Optionally, foretell decide lamination device, panorama detection mechanism includes that two are located the panorama detection camera of material area both sides relatively.

Optionally, in the above cutting and stacking device, a biasing mechanism is disposed on the stacking mechanism, and the biasing mechanism applies a pressure back to the biasing mechanism toward the bottom of the merged material tape, so that the head end of the merged material tape is obliquely folded in the stacking mechanism.

Optionally, in the above cutting and laminating device, the biasing mechanism is a blowing mechanism that blows air toward the bottom of the merged material tape to fold the merged material tape obliquely.

Optionally, in the above lamination cutting device, the blowing mechanism is an air pipe, and the air pipe is close to the opening of the lamination mechanism.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a cutting and laminating device which is provided with two groups of feeding and laminating devices, wherein the two groups of feeding and laminating devices convey a diaphragm to a thermal compounding mechanism through a diaphragm feeding mechanism, the negative plate is conveyed to the thermal compounding mechanism through a negative feeding mechanism, the negative plate is conveyed to the thermal compounding mechanism through a positive feeding mechanism, a negative plate material belt and a positive plate material belt are cut into a single negative plate and a single positive plate through the cutting mechanism, the single negative plate and the single positive plate are respectively positioned on the upper surface and the lower surface of the diaphragm material belt, and the single negative plate and the single positive plate are pressed on the upper surface and the lower surface of the diaphragm through hot-pressing compounding of two hot-pressing rollers, so that the risk of pole piece dislocation in the moving process of a battery core pole piece is reduced. And the two groups of material belts after hot-pressing compounding are conveyed to a rolling mechanism and conveyed to a material passing gap through the rolling mechanism, the two groups of material belts are converged into a converged material belt in the material passing gap, and the converged material belt is stacked in the lamination mechanism. Decide the two sets of material areas of lamination device simultaneously, the lamination is fast, and production efficiency is high, effectively reduces to decide lamination device quantity, practices thrift the cost, reduces and takes up an area of the space.

2. According to the cutting and laminating device provided by the utility model, the side edge of each hot-pressing roller is rotatably provided with the first dust-sticking roller; the first dust sticking roller peripheral wall is attached to the hot pressing roller peripheral wall, the hot pressing roller contacts the first dust sticking roller when rotating and drives the first dust sticking roller to rotate, dust is stuck on the first dust sticking roller, the hot pressing roller is kept clean, and the dust is prevented from being pressed on the surface of the pole piece to pollute or damage the pole piece.

3. According to the cutting and laminating device provided by the utility model, the second dust-binding roller is wrapped with a plurality of layers of high-viscosity dust-binding paper; the sticky dust paper periphery wall is laminated first sticky dust roller periphery wall, so that the laminating of second sticky dust roller first sticky dust roller to adsorb the dust on the first sticky dust roller on the sticky dust paper. When the second dust-binding roller is cleaned in the later period, only the dust-binding paper on the surface of one layer of the second dust-binding roller needs to be torn off, so that the cleaning is convenient and quick.

Drawings

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

Fig. 1 is a schematic view of a lamination cutting device provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is a schematic view of a lamination mechanism;

fig. 5 is an expanded schematic view of the junction material belt.

Description of reference numerals:

11-a diaphragm feeding mechanism; 12-a negative electrode feeding mechanism; 13-a positive electrode feeding mechanism; 14-thermal compounding mechanism; 15-a rolling mechanism; 16-a cutting mechanism; 17-a first dusting roller; 18-a second dusting roller; 19-a panoramic detection mechanism; 2-lamination mechanism.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

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

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a decide lamination device, as shown in fig. 1, it includes two sets of relative feed compression fittings that set up, and arbitrary group's feed compression fitting device is including the diaphragm feeding mechanism 11 that is used for carrying the diaphragm material area, locate negative pole feeding mechanism 12 and the positive pole feeding mechanism 13, the thermal compound mechanism 14, the roller press 15 of diaphragm feeding mechanism 11 both sides and decide mechanism 16. The negative electrode feeding mechanism 12 is used for conveying a negative electrode sheet material belt; the positive electrode feeding mechanism 13 is used for conveying a positive electrode sheet material belt; the thermal compounding mechanism 14 is arranged at the rear side of the anode feeding mechanism 13 and is provided with two hot pressing rollers which are arranged oppositely; the rolling mechanism 15 is provided with two rolling rollers which are arranged oppositely and arranged at the rear side of the thermal compound mechanism 14 at intervals; the cutting mechanism 16 is arranged between the anode feeding mechanism 13 and the thermal compounding mechanism 14; the cutting mechanism 16 is used for cutting the positive plate material belt and the negative plate material belt into single pole pieces; a material passing gap for the two groups of material belts to converge and pass is formed between the rolling rollers of the two groups of material feeding and pressing devices; a lamination mechanism 2 is arranged below the material passing gap; two sets of material areas join through the material clearance and form and join the material area and fold and locate in lamination mechanism 2.

This structure decide lamination device, set up two sets of feed compression fittings, two sets of feed compression fittings pass through 11 heat to compound mechanism 14 transport diaphragms of diaphragm feed mechanism, through the 14 negative pole pieces of negative pole feed mechanism 12 heat to compound mechanism, carry the negative pole piece through 13 heat to compound mechanism 14 of positive feed mechanism, negative pole piece material area and positive plate material area cut into monomer negative pole piece and monomer positive plate through deciding mechanism 16, monomer negative pole piece and monomer positive plate are located diaphragm material area upper and lower surface respectively, monomer negative pole piece and monomer positive plate compress tightly on the diaphragm upper and lower surface through two hot pressing roller hot pressing complex, reduce electric core pole piece and remove in-process pole piece dislocation risk. The two groups of material belts after hot-pressing compounding are conveyed to a rolling mechanism 15 and conveyed to a material passing gap through the rolling mechanism 15, the two groups of material belts are combined into a combined material belt in the material passing gap, and the combined material belt is stacked in the lamination mechanism 2. Decide the two sets of material areas of lamination device simultaneously, the lamination is fast, and production efficiency is high, effectively reduces to decide lamination device quantity, practices thrift the cost, reduces and takes up an area of the space.

Specifically, the upper surface and the lower surface of the diaphragm are provided with bonding layers, and the negative plate and the positive plate are bonded and fixed on the surface of the diaphragm through a hot pressing roller. The diaphragm feeding mechanism 11 comprises a diaphragm unwinding motor and a diaphragm unwinding roller, the driving end of the diaphragm unwinding motor is connected with the diaphragm unwinding roller, the diaphragm unwinding roller winds a diaphragm material belt, and the diaphragm unwinding motor drives the diaphragm unwinding roller to rotate so as to unfold the diaphragm material belt. The cathode feeding mechanism 12 and the anode feeding mechanism 13 are unreeled in the same manner.

Preferably, and with reference to fig. 1, the two sets of feed stitching devices are symmetrically arranged to facilitate synchronous control of the two sets of feed stitching devices. In fig. 1, the lower material belt is a first material belt, and in fig. 1, the upper material belt is a second material belt, optionally, the negative electrode feeding mechanism 12 is arranged on the upper portion of the diaphragm feeding mechanism, the positive electrode feeding mechanism 13 is arranged on the upper portion of the diaphragm feeding mechanism, the negative electrode monomer pole pieces are distributed on the upper surface of the diaphragm at intervals, the positive electrode monomer pole pieces are distributed on the lower surface of the diaphragm at intervals, and the negative electrode monomer pole pieces and the positive electrode monomer pole pieces in each material belt are arranged in a staggered manner. Referring to fig. 3 and 5, after the first material belt and the second material belt are merged, the negative electrode plates of the two material belts are located between the two diaphragms, and the two groups of positive electrode plates are located outside the two diaphragms respectively.

Further, the heat and pressure roller is a metal roller having a heating function. Referring to fig. 1 and 2, a first dust-binding roller 17 is rotatably arranged on the side edge of each hot-pressing roller; the laminating of first adhesion dust roller 17 periphery wall hot pressing roller periphery wall, the first adhesion dust roller 17 of contact when hot pressing roller rotates and drive first adhesion dust roller 17 and rotate, glues the dust on first adhesion dust roller 17, keeps the hot pressing roller clean, prevents that the dust pressfitting from polluting or damaging the pole piece to the pole piece surface.

Further, first dust binding roller 17 side rotates and is equipped with second dust binding roller 18, the laminating of second dust binding roller 18 periphery wall first dust binding roller 17 periphery wall. The first dust-binding roller 17 rotates and contacts the second dust-binding roller 18, and dust on the first dust-binding roller 17 is adhered to the second dust-binding roller 18, so that the first dust-binding roller 17 is clean. For example, the first dust-binding roller 17 is a soft dust-binding roller having a good dust-binding effect but a low viscosity, and the second dust-binding roller 18 is a hard dust-binding roller. Preferably, the second dust-binding roller 18 is wrapped with a plurality of layers of high-viscosity dust-binding paper; the adhesion dust paper periphery wall laminating first adhesion dust roller 17 periphery wall, so that second adhesion dust roller 18 laminates first adhesion dust roller 17 to adsorb the dust on the first adhesion dust roller 17 on the adhesion dust paper. When the second dust-binding roller 18 is cleaned in the later period, only one layer of dust-binding paper on the surface of the second dust-binding roller 18 needs to be torn off, so that the cleaning is convenient and quick. Optionally, the first dust-binding roller 17 and the second dust-binding roller 18 are rotatably sleeved on the roller shaft, and the hot-pressing roller rotates to synchronously drive the first dust-binding roller 17 and the second dust-binding roller 18 to rotate.

Referring to fig. 1, a panoramic detection mechanism 19 is arranged between the thermal compounding mechanism 14 and the rolling mechanism 15 and used for detecting the positive plate and negative plate material belts so as to detect the defects of the product, and when the panoramic detection mechanism 19 detects that the product is bad, a cutting mechanism 16 cuts the bad plate unit so as to remove the bad unit. For example, the panoramic detection mechanism 19 includes two panoramic detection cameras disposed opposite to each other on the upper and lower sides of the strip, and preferably, the two panoramic detection cameras are disposed opposite to each other to simultaneously and synchronously detect the positive electrode sheet and the negative electrode sheet strip.

Referring to fig. 4, a biasing mechanism is arranged on the lamination mechanism 2, and applies a pressure back to the biasing mechanism towards the bottom of the converged material belt, so that the head end of the converged material belt is obliquely folded in the lamination mechanism 2, even if the first pole piece unit back biasing mechanism is inclined in the lamination material box, under the action of gravity of the pole piece units, the end parts of the two sides of the first pole piece unit fall to and are attached to the inner walls of the two sides of the lamination material box, and the positioning of the first pole piece unit is realized; and the subsequent pole piece unit is folded in a Z shape in a free falling mode, and after the pole piece unit is folded to the required number of layers, the diaphragm is cut to complete the stacking of one battery cell. Then the lamination magazine is switched, another electric core is stacked, continuous stacking is achieved, and stacking efficiency is improved.

Further, the bias mechanism is an air blowing mechanism which blows air towards the bottom of the confluent material belt to fold the confluent material belt obliquely. For example, the air blowing mechanism is an air pipe which is arranged close to the opening of the lamination mechanism 2 to blow air above the lamination magazine, even if the head end of the merged material strip is inclined back to the air pipe when just entering the lamination magazine, and then the Z-shaped folding is realized under the action of the weight.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A cut lamination device, comprising:

a membrane feeding mechanism (11) for conveying the membrane material belt; and

the negative electrode feeding mechanism (12) and the positive electrode feeding mechanism (13) are arranged on two sides of the diaphragm feeding mechanism (11), and the negative electrode feeding mechanism (12) is used for conveying a negative electrode sheet material belt; the positive electrode feeding mechanism (13) is used for conveying a positive electrode sheet material belt;

the thermal compounding mechanism (14) is arranged at the rear side of the anode feeding mechanism (13) and is provided with two hot pressing rollers which are arranged oppositely;

the rolling mechanism (15) is provided with two rolling rollers which are arranged oppositely and arranged at the rear side of the thermal compound mechanism (14) at intervals;

the cutting mechanism (16) is arranged between the anode feeding mechanism (13) and the thermal compounding mechanism (14); the cutting mechanism (16) is used for cutting the positive plate material belt and the negative plate material belt into single pole pieces;

a material passing gap for the two groups of material belts to converge and pass is formed between the rolling rollers of the two groups of material feeding and pressing devices; a lamination mechanism (2) is arranged below the material passing gap; the two groups of material belts are converged through the material gap to form a converged material belt and are superposed in the lamination mechanism (2).

2. A cutting and laminating device according to claim 1, characterized in that the two groups of feed stitching devices are arranged symmetrically.

3. A cutting and stacking device according to claim 1 or 2, characterized in that each of said hot-pressing rollers is provided with a first dust-binding roller (17) in rotation; the peripheral wall of the first dust sticking roller (17) is attached to the peripheral wall of the hot pressing roller.

4. A cutting and laminating device according to claim 3, characterized in that the first dust-binding roller (17) is provided with a second dust-binding roller (18) in a side edge rotation manner, and the peripheral wall of the second dust-binding roller (18) is attached to the peripheral wall of the first dust-binding roller (17).

5. A cutting and stacking device according to claim 4, wherein the second dust-binding roller (18) is wrapped with dust-binding paper; the sticky dust paper periphery wall is attached to the first sticky dust roller (17) periphery wall, so that the second sticky dust roller (18) is attached to the first sticky dust roller (17).

6. A cutting lamination device according to claim 1 or 2, characterized in that a panoramic detection mechanism (19) is provided between the thermal compounding mechanism (14) and the rolling mechanism (15).

7. A cutting and stacking device according to claim 6, characterized in that said panoramic detection means (19) comprise two panoramic detection cameras arranged opposite each other on the two sides of the strip.

8. A cut-off lamination device according to claim 1 or 2, wherein a biasing mechanism is provided on the lamination mechanism (2), and the biasing mechanism applies a pressure against the biasing mechanism towards the bottom of the merged material tape to fold the leading end of the merged material tape obliquely into the lamination mechanism (2).

9. A cut and stack arrangement as in claim 8 wherein the biasing means is a blowing means which blows air towards the bottom of the merged web to cause it to fold obliquely.

10. A cutting and lamination device according to claim 9, wherein said blowing means is an air tube arranged close to the opening of said lamination means (2).