CN220614150U - Battery cell diaphragm cold cutting mechanism - Google Patents

Abstract

The utility model discloses a cell diaphragm cold cutting mechanism, which relates to the technical field of cell production equipment and comprises a side pressing mechanism and a middle pressing mechanism; the cutter moving mechanism is positioned above the middle pressing mechanism, and the cutter moving mechanism is lifted to be close to or far from the diaphragm of the battery cell along the vertical direction to perform cold cutting; the cutter motion mechanism comprises two circular cutter components, the distance between the two circular cutter components is equal to the width of the battery cell, the circular cutter components are provided with dust collection mechanisms, and the dust collection mechanisms are used for adsorbing dust generated in the cold cutting process. According to the cell membrane cold cutting mechanism, the side pressing mechanism and the middle pressing mechanism can respectively press the cells at the middle part and the two sides, the membranes at the two sides of the middle cell are subjected to cold cutting through the cutter moving mechanism, the cells are pressed at the three sides, and the cold cutting is more stable. The two circular cutter assemblies cut the diaphragms on two sides simultaneously and clean dust through the dust collection mechanism, so that the cutting quality is improved, the equipment cost is effectively reduced, and the cutting efficiency and the cell production efficiency are improved.

Description

Battery cell diaphragm cold cutting mechanism

Technical Field

The utility model relates to the technical field of battery cell production equipment, in particular to a battery cell diaphragm cold cutting mechanism.

Background

The lamination machines in the current market are in a mode of laminating single sheets or multi-station lamination, and the production efficiency is low; in order to solve the difficult problems of low production efficiency and high cost of the lamination machine, a plurality of lamination sheets are simultaneously laminated on one lamination table, so that the production efficiency is improved; after a complete battery core is stacked on the stacking table, a plurality of battery cores are required to be separated, and a diaphragm between every two battery cores is required to be cut and separated; cutting the multilayer diaphragm by heat, and cutting the multilayer diaphragm layer by heating the plurality of resistance wires simultaneously; the single-layer diaphragm is cold cut, and the diaphragm is cut off by an art designer blade.

Chinese patent CN 201921493635.4 discloses a cold and hot cutting mechanism for cutting a multi-layered diaphragm, comprising a cutting assembly and a carrying assembly; the cutting assembly and the supporting assembly both comprise mounting seats, a linear guide rail extending in the X direction is arranged on the mounting seats, a cutter fixing seat is fixedly arranged at the front end of the linear guide rail X, a cutter seat capable of moving in the Z direction is movably arranged on the cutter fixing seat of the cutting assembly, a cutter pad capable of moving in the Z direction is movably arranged on the cutter fixing seat of the supporting assembly, the cutter fixing seat is also in transmission connection with a driving device fixedly arranged on the mounting seats, and the driving device can drive the cutter fixing seat to drive the cutter seat or the cutter pad to slide along the linear guide rail; the hot cutting knife and the cold cutting knife which are arranged at intervals in the Z direction are fixedly arranged on the cutter seat, and the cold cutting knife is opposite to the cutter seat at the arrangement position.

The existing single-layer diaphragm cutting does not control the temperature of the resistance wire or the heating sheet, but only carries out instant pulse heating, and the temperature of the whole resistance wire or the heating sheet is uneven during heating, so that the condition of wire drawing or uneven cutting edges can occur during cutting; the cold cutting scheme can lead to membrane wiredrawing or tearing of the membrane, and the multi-layer membrane hot cutting scheme has the problems of high cost and low efficiency.

Disclosure of Invention

The utility model aims at least solving the problems that the temperature of the whole resistance wire or the heating sheet is uneven during hot cutting and heating, and wire drawing or uneven cutting edges can occur during cutting in the prior art; the cold cutting scheme can cause the condition of diaphragm wire drawing or tearing diaphragm, and all has the cutting cost height, and the cutting quality is unstable, leads to the technical problem of inefficiency ". Therefore, the utility model provides the battery cell diaphragm cold cutting mechanism, which adopts the circular cutter cold cutting mechanism and the more stable pressing mechanism, so that the cutting quality of the battery cell diaphragm is improved, the cost of the battery cell separating mechanism is reduced, and the production efficiency of the battery cell is improved.

According to some embodiments of the utility model, the cell membrane cold cutting mechanism comprises a pressing frame and a cutter frame, wherein the cutter frame is arranged above the middle part of the pressing frame, and a cell membrane to be cut passes below the cutter frame; comprising the following steps:

the side hold-down mechanisms are respectively arranged at two sides of the hold-down rack and are used for holding down two sides of the battery cell;

the middle pressing mechanism is arranged at the middle part of the pressing rack and used for pressing the middle part of the battery cell;

the cutter moving mechanism is arranged on the cutter rack and is positioned above the middle pressing mechanism, and the cutter moving mechanism is lifted in the vertical direction to be close to or far away from the diaphragm of the battery cell for cold cutting;

the cutter motion mechanism comprises two circular cutter assemblies, the distance between the two circular cutter assemblies is equal to the width of the battery cell, the circular cutter assemblies are provided with dust collection mechanisms, and the dust collection mechanisms are used for adsorbing dust generated in the cold cutting process.

According to some embodiments of the utility model, the circular cutter assembly is provided with a cutter adjustment mechanism for rotating the cutting angle of the circular cutter assembly.

According to some embodiments of the utility model, the knob of the cutter adjusting mechanism and the circular cutter assembly are respectively provided with scale marks, and the scale marks of the cutter adjusting mechanism and the circular cutter assembly are in one-to-one correspondence.

According to some embodiments of the utility model, the cutter movement mechanism comprises a cold-cutting limit pressing plate, the cold-cutting limit pressing plate is positioned between the two circular cutter assemblies, and the cutter movement mechanism stops descending when the cold-cutting limit pressing plate is contacted with the surface of the battery cell in the process of descending the cold-cutting diaphragm by the cutter movement mechanism.

According to some embodiments of the utility model, the cutter frame is provided with a cold cutting driving mechanism which is movably connected, and the cold cutting driving mechanism drives the cutter moving mechanism to move and cut along the length direction of the battery cell.

According to some embodiments of the utility model, the cutter movement mechanism comprises a connection base, and the circular cutter assembly, the dust collection mechanism, the cutter adjustment mechanism and the cold cutting limit pressing plate are respectively arranged on the connection base.

According to some embodiments of the utility model, the cutter movement mechanism comprises a Z-axis driving mechanism, one end of the Z-axis driving mechanism is connected with the cold cutting driving mechanism, and the other end of the Z-axis driving mechanism is connected with the connecting base and is used for driving the connecting base to be close to or far away from the diaphragm of the battery cell.

According to some embodiments of the utility model, the middle pressing mechanism comprises a middle pressing plate and a middle sliding rail, wherein the middle sliding rail is arranged on the pressing frame, and the middle pressing plate moves along the length direction of the battery cell through the middle sliding rail.

According to some embodiments of the utility model, the edge of the circular cutter assembly is perpendicular to the surface of the cell membrane.

According to some embodiments of the utility model, the side hold-down mechanism employs at least two sets of hold-down elements to hold down the two side cell surfaces.

According to some embodiments of the utility model, the cell membrane cold cutting mechanism has at least the following beneficial effects: the side hold-down mechanism with middle part hold-down mechanism can compress tightly the electric core of middle part and both sides respectively, through cutter motion mechanism carries out the cold cutting to the diaphragm of middle part electric core both sides, and the three sides compress tightly the electric core, and the cold cutting is more stable. The two circular cutter assemblies cut diaphragms on two sides simultaneously and clean dust through the dust collection mechanism, so that cutting quality is improved, equipment cost is effectively reduced, and cutting efficiency and cell production efficiency are improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic perspective view of a cell membrane cold cutting mechanism according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a side hold-down mechanism and a middle hold-down mechanism according to an embodiment of the utility model;

FIG. 3 is a top view of a side hold-down mechanism and a middle hold-down mechanism according to an embodiment of the utility model;

FIG. 4 is a front view of a side hold-down mechanism and a middle hold-down mechanism according to an embodiment of the utility model;

FIG. 5 is a first schematic view of a cutter movement mechanism according to an embodiment of the present utility model;

fig. 6 is a second schematic view of a cutter movement mechanism according to an embodiment of the present utility model.

Reference numerals:

a pressing frame 110, a cutter frame 120, a cold cutting driving mechanism 121,

Side hold down mechanism 200, hold down element 210,

Middle pressing mechanism 300, middle slide rail 310, middle pressing plate 320,

The device comprises a connecting base 401, a Z-axis driving mechanism 402, a circular cutter assembly 410, a dust collection mechanism 420, a cutter adjusting mechanism 430, a scale mark 431 and a cold cutting limit pressing plate 440.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, top, bottom, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A cell membrane cold-cutting mechanism according to an embodiment of the present utility model is described below with reference to fig. 1-6.

As shown in fig. 1 to 6, the cell membrane cold cutting mechanism comprises a pressing frame 110 and a cutter frame 120, wherein the cutter frame 120 is arranged above the middle part of the pressing frame 110, and a cell membrane to be cut passes below the cutter frame 120. The pressing frame 110 is distributed on two sides of the cutting frame 120 by taking the cutting frame 120 as a center, the pressing mechanism and the cutting frame 120 span the cell lamination conveying line, and the extending direction of the frame is perpendicular to the cell conveying direction.

Specifically, the cold cutting mechanism comprises a side pressing mechanism 200, a middle pressing mechanism 300 and a cutter moving mechanism, wherein the side pressing mechanism 200 is respectively arranged on the pressing frames 110 at two sides of the cutter frame 120, namely, is respectively arranged at two sides of the pressing frames 110 and is used for pressing two sides of the battery cell. The middle pressing mechanism 300 is supported by the pressing frame 110 at one side and is arranged in the middle of the pressing frame 110 for pressing the middle of the battery cell. The middle part hold-down mechanism 300 rises and falls along with the side hold-down mechanism 200 of one side that connects, and both sides hold-down mechanism 200 goes up and down in step, realizes that middle part and left and right sides hold-down mechanism are synchronous to push down, and when the electric core of transportation line was carried to middle part hold-down mechanism 300 below, the transportation line stop action, and middle part hold-down mechanism 300 below aligns with the electric core middle part this moment, and when middle part and both sides hold-down mechanism were pressed down the electric core, both sides hold-down mechanism 200 compress tightly the electric core of middle part electric core both sides, and middle part hold-down mechanism 300 compresses tightly the middle part electric core.

The cutter moving mechanism is arranged on the cutter frame 120 and is positioned above the middle pressing mechanism 300, and the cutter moving mechanism is lifted in the vertical direction to be close to or far away from the diaphragm of the battery cell for cold cutting. The cutter movement mechanism comprises two circular cutter assemblies 410, the distance between the two circular cutter assemblies 410 is equal to the width of the battery cell, the circular cutter assemblies 410 are provided with dust collection mechanisms 420, and the dust collection mechanisms 420 are used for adsorbing dust generated in the cold cutting process.

When the pressing mechanism presses the middle and adjacent cells, the two circular cutter assemblies 410 of the cutter moving mechanism perform cold cutting on the diaphragms at the two sides of the middle cell, and perform simultaneous cold cutting on the two sides on the premise of ensuring that the cells and the diaphragms are pressed, so that cutting stability is improved. The cell diaphragm cold cutting mechanism has the advantages of low manufacturing cost and stable cold cutting effect. The cutting quality is effectively improved, the equipment cost is effectively reduced, and the cutting efficiency and the cell production efficiency are improved.

In some embodiments of the present utility model, as shown in fig. 5 and 6, the circular cutter assembly 410 is provided with a cutter adjustment mechanism 430, and the cutter adjustment mechanism 430 is used to rotate the cutting angle of the circular cutter assembly 410. Specifically, the blade of the circular cutter assembly 410 may collapse due to long-term use during use, and the angle of the cutter is rotated by the cutter adjusting mechanism 430 to avoid the position of collapsing, so that the cutter edge of the circular cutter assembly 410 is fully utilized, and the cutting cost is reduced.

In a further embodiment, as shown in fig. 5 and 6, the knob of the cutter adjustment mechanism 430 and the circular cutter assembly 410 are respectively provided with scale marks 431, and the scale marks 431 of the cutter adjustment mechanism 430 and the circular cutter assembly 410 are in one-to-one correspondence. Specifically, the blades of the circular cutter assembly 410 are marked with scale marks 431, the positions where the cutters are used are marked by the scale marks 431, the cutter adjusting mechanism 430 is also provided with the scale marks 431, when the angle of the two cutters is adjusted by the cutter adjusting mechanism 430, the angles of the two cutters are consistent, the cutting edges of the two circular cutter assemblies 410 are parallel to each other, and the distance between the two cutting edges is equal to the distance between the adjacent diaphragms of the middle cell.

In some embodiments of the present utility model, as shown in fig. 5 and 6, the cutter movement mechanism includes a cold-cut limit platen 440 between the two circular cutter assemblies 410, and the cutter movement mechanism stops descending when the cold-cut limit platen 440 contacts the surface of the cell during the descent of the cutter movement mechanism to cold-cut the membrane. Specifically, the length of the cold-cutting limit pressing plate 440 is similar to the diameter of the cutting edge of the circular cutter assembly 410, so that the cutting position of the circular cutter assembly 410 can be pressed, and the diaphragm can be kept pressed.

In a further embodiment, as shown in fig. 1, the cutter frame 120 is provided with a cold-cutting driving mechanism 121 movably connected, and the cold-cutting driving mechanism 121 drives the cutter moving mechanism to move and cut along the length direction of the battery cell. Specifically, the cold-cutting drive mechanism 121 may be formed by a buffer structure arrangement, and the cold-cutting drive mechanism 121 stops descending when the stroke is depressed to the bottom.

In a further embodiment, as shown in fig. 5 and 6, the cutter movement mechanism includes a connection base 401, and a circular cutter assembly 410, a dust suction mechanism 420, a cutter adjustment mechanism 430 and a cold cut limit platen 440 are respectively disposed on the connection base 401. Specifically, the connection base 401 is used as a carrier of the cutting element of the cutter movement mechanism, and can drive the cutting element to synchronously lift and lower, so that the cutting element is more stable.

In a further embodiment, as shown in fig. 5 and 6, the cutter movement mechanism includes a Z-axis drive mechanism 402, one end of which is connected to the cold-cutting drive mechanism 121, and the other end of which is connected to the connection base 401 for driving the connection base 401 toward or away from the cell membrane. Specifically, the Z-axis drive mechanism 402 may be hydraulically driven or servo-rail driven.

In some embodiments of the present utility model, as shown in fig. 2-4, the middle pressing mechanism 300 includes a middle pressing plate 320 and a middle sliding rail 310, the middle sliding rail 310 is disposed on the pressing frame 110, and the middle pressing plate 320 moves along the length direction of the cell through the middle sliding rail 310.

In some embodiments of the present utility model, the edge of the circular cutter assembly 410 is perpendicular to the surface of the cell membrane. The incision angles of the diaphragms at the two sides of the middle cell are equal.

In some embodiments of the present utility model, as shown in fig. 2-4, the side hold-down mechanism 200 employs at least two sets of hold-down elements 210 to hold down the two side cell surfaces. In this embodiment, three sets of pressing elements 210 are used to press the same side of the battery cells, and in other embodiments, the number of the pressing elements 210 may be adjusted according to the length specification of the battery cells.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a battery cell diaphragm cold cutting mechanism, includes compresses tightly frame (110) and cutter frame (120), cutter frame (120) set up in compress tightly the middle part top of frame (110), the battery cell diaphragm of waiting to cut passes through cutter frame (120) below; characterized by comprising the following steps:

the side hold-down mechanisms (200) are respectively arranged at two sides of the hold-down rack (110) and are used for holding down two sides of the battery cell;

the middle pressing mechanism (300) is arranged at the middle part of the pressing rack (110) and is used for pressing the middle part of the battery cell;

the cutter moving mechanism is arranged on the cutter frame (120) and is positioned above the middle pressing mechanism (300), and the cutter moving mechanism is lifted in the vertical direction to be close to or far from the diaphragm of the battery cell for cold cutting;

the cutter motion mechanism comprises two circular cutter assemblies (410), the distance between the two circular cutter assemblies (410) is equal to the width of the battery cell, the circular cutter assemblies (410) are provided with dust collection mechanisms (420), and the dust collection mechanisms (420) are used for adsorbing dust generated in the cold cutting process.

2. The cell membrane cold cutting mechanism according to claim 1, wherein the circular cutter assembly (410) is provided with a cutter adjustment mechanism (430), the cutter adjustment mechanism (430) being adapted to rotate the cutting angle of the circular cutter assembly (410).

3. The cell membrane cold cutting mechanism according to claim 2, wherein a knob of the cutter adjusting mechanism (430) and the circular cutter assembly (410) are respectively provided with scale marks (431), and the scale marks (431) of the cutter adjusting mechanism (430) and the circular cutter assembly (410) are in one-to-one correspondence.

4. A cell membrane cold cutting mechanism according to claim 3, wherein the cutter movement mechanism comprises a cold cutting limit pressing plate (440) located between two circular cutter assemblies (410), and the cutter movement mechanism stops descending when the cutter movement mechanism descends to cold cut the membrane, wherein the cold cutting limit pressing plate (440) is in contact with the cell surface.

5. The cell membrane cold cutting mechanism according to claim 4, wherein the cutter frame (120) is provided with a cold cutting driving mechanism (121) which is movably connected, and the cold cutting driving mechanism (121) drives the cutter moving mechanism to move and cut along the length direction of the cell.

6. The cell membrane cold cutting mechanism according to claim 5, wherein the cutter movement mechanism comprises a connection base (401), and the circular cutter assembly (410), the dust collection mechanism (420), the cutter adjustment mechanism (430) and the cold cutting limit pressing plate (440) are respectively arranged on the connection base (401).

7. The cell membrane cold cutting mechanism according to claim 6, wherein the cutter movement mechanism comprises a Z-axis driving mechanism (402), one end of the cutter movement mechanism is connected with the cold cutting driving mechanism (121), and the other end of the cutter movement mechanism is connected with the connection base (401) for driving the connection base (401) to approach or separate from a cell membrane.

8. The cell membrane cold-cutting mechanism according to any one of claims 1 to 7, wherein the middle pressing mechanism (300) comprises a middle pressing plate (320) and a middle sliding rail (310), the middle sliding rail (310) is arranged on the pressing frame (110), and the middle pressing plate (320) moves along the length direction of the cell through the middle sliding rail (310).

9. The cell membrane cold-cutting mechanism according to any one of claims 1 to 7, wherein the cutting edge of the circular cutter assembly (410) is perpendicular to the surface of the cell membrane.

10. The cell membrane cold-cutting mechanism according to any one of claims 1 to 7, wherein the side hold-down mechanism (200) employs at least two sets of hold-down elements (210) to hold down two side cell surfaces.