CN212934687U - Roller pressing mechanism for producing battery cell - Google Patents

Abstract

The utility model provides a roller pressing mechanism for producing battery cells, which comprises a mounting rack, a conveying belt arranged on the mounting rack and a driving piece; at least two roller assemblies are arranged above the mounting frame, each roller assembly is sequentially arranged along the conveying direction of the battery cell, the roller assemblies are electrically connected with the driving piece, and the rolling direction of the roller assemblies is opposite to the conveying direction of the battery cell; the roller assembly comprises a first rubber roller and a second rubber roller which are sequentially arranged from top to bottom; the mounting frame is also provided with an adjusting mechanism for adjusting the roller assemblies in the vertical direction, and each roller assembly is connected with one adjusting mechanism; all be equipped with the layer board in the position of roller subassembly on the mounting bracket, the layer board is used for lifting the conveyer belt, and the layer board is the plane with the contact surface of conveyer belt. Compared with the prior art, the utility model provides a rolling mechanism has solved the inside diaphragm fold of present lithium cell serious, gaseous difficult to exhaust problem, has improved the security performance of battery.

Description

Roller pressing mechanism for producing battery cell

Technical Field

The utility model relates to a battery field, concretely relates to roller press constructs for electricity core production.

Background

The lithium battery has the advantages of high output power, long charging and discharging life, no pollution, wide working temperature range, small self-discharge and the like. However, for the lithium battery with the large positive and negative pole pieces, the diaphragm inside the battery after baking often generates serious wrinkles, so that gas generated during the first charging is difficult to escape and is easy to be retained in the diaphragm, gaps are generated on the positive and negative pole pieces, black spots or lithium precipitation can occur at the gaps in the subsequent charging and discharging processes, and further the capacity and the safety of the battery are influenced.

In view of the above, it is necessary to provide a technical solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a roll extrusion mechanism is used in electricity core production, solves present lithium cell and has inside diaphragm fold serious, leads to gaseous difficult exhaust problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a rolling mechanism for producing a battery cell comprises a mounting rack, a conveying belt and a driving piece, wherein the conveying belt and the driving piece are arranged on the mounting rack;

at least two roller assemblies are arranged above the mounting frame, each roller assembly is sequentially arranged along the conveying direction of the battery cell, the roller assemblies are electrically connected with the driving piece, and the rolling direction of the roller assemblies is opposite to the conveying direction of the battery cell; the roller assembly comprises a first rubber roller and a second rubber roller which are sequentially arranged from top to bottom;

the mounting frame is also provided with an adjusting mechanism for adjusting the roller assemblies in the vertical direction, and each roller assembly is connected with one adjusting mechanism; and supporting plates are arranged at the positions of the roller assemblies on the mounting frame and used for lifting the conveying belt, and the contact surfaces of the supporting plates and the conveying belt are planes.

Preferably, the outer side surface of the first rubber roller, which is in contact with the second rubber roller, is a convex cambered surface.

Preferably, the peripheral surface of the second rubber roller is provided with a rubber layer.

Preferably, the vertical distance between each roller assembly and the conveyor belt is gradually reduced to realize multi-stage rolling of the battery cell by the roller assemblies.

Preferably, the height of the supporting plate is smaller than the thickness of the battery core.

Preferably, the first rubber roller comprises a first roller and a first connecting rod, the first roller is rotatably connected with the first connecting rod, and two ends of the first connecting rod are vertically arranged on the mounting frame; the second rubber roll comprises a second roller and a second connecting rod, the second roller is rotatably connected with the second connecting rod, and two ends of the second connecting rod are vertically installed on the mounting frame.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a rolling mechanism, through setting up a plurality of roller assemblies, the electric core passes through each rubber roll in proper order by the conveyer belt, realizes the multistage roll-in to the electric core; meanwhile, a roller is added above the traditional rubber roller, the added roller acts on the traditional rubber roller to form extrusion on the traditional rubber roller, so that the deformation of a part of the roller caused by the reaction force of the battery cell is relieved, and the rolling effect of the battery cell is enhanced. The roller assembly also has a matching effect with the supporting plate, so that uneven rolling is prevented, gas in the battery core is further discharged out of the battery body, the folded diaphragm is smoothed, the problems that the current lithium battery is serious in diaphragm folding and difficult to discharge gas are solved, and the safety performance of the battery is improved.

Drawings

Fig. 1 is a schematic view of a partial structure of the rolling mechanism of the present invention.

Fig. 2 is a schematic view of the rolling mechanism according to the present invention.

Figure 3 is a schematic view of the construction of the roller assembly of the present invention.

In the figure: 1-a mounting frame; 2-a conveyor belt; 3-a driving member; 4-a roller assembly; 41-a first rubber roller; 411-first connecting rod; 412-a first roller; 42-a second rubber roller; 421-a second connecting rod; 422-a second roller; 5-an adjusting mechanism; 6-support plate.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the present invention and its advantageous effects will be described in further detail below with reference to the accompanying drawings of the detailed description and the specification, but the present invention is not limited thereto.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

As shown in fig. 1 to 3, a rolling mechanism for producing a battery cell includes an installation frame 1, a conveyor belt 2 disposed on the installation frame 1, and a driving member 3; the driving member 3, which may be a servo motor, a hydraulic cylinder or an air cylinder, is disposed above the mounting frame 1.

At least two roller assemblies 4 are arranged above the mounting rack 1, each roller assembly 4 is sequentially arranged along the conveying direction of the battery cell, the roller assemblies 4 are electrically connected with the driving piece 3, and the rolling direction of the roller assemblies 4 is opposite to the conveying direction of the battery cell; the roller assembly 4 comprises a first rubber roller 41 and a second rubber roller 42 which are arranged in sequence from top to bottom. When the battery core rolling device works, the first rubber roller 41 is in contact with the second rubber roller 42, preferably, the outer side surface of the first rubber roller 41 in contact with the second rubber roller 42 is a convex arc surface, and the convex arc surface can help to extrude the second rubber roller 42, so that the rolling effect of the battery core is enhanced. And the rubber layers are arranged on the peripheral surfaces of the second rubber rollers 42, and the rubber layers have elasticity, so that the gas in the electric core can be discharged more favorably, the folded diaphragm is further smoothed, and the safety performance of the battery is enhanced.

More specifically, the first rubber roller 41 comprises a first roller 412 and a first connecting rod 411, the first roller 412 is rotatably connected with the first connecting rod 411, and two ends of the first connecting rod 411 are vertically installed on the mounting frame 1; the second rubber roller 42 comprises a second roller 422 and a second connecting rod 421, the second roller 422 is rotatably connected with the second connecting rod 421, and two ends of the second connecting rod 421 are vertically arranged on the mounting frame 1. The first connecting rod 411 and the connecting rod can be installed in the middle of two ends of the roller, the roller is driven to rotate by the rotation of the connecting rod, the connecting rod is driven to rotate by the driving part 3, and the driving rod of the driving part 3 can be specifically utilized to be respectively and fixedly connected with two ends of the first connecting rod 411 so as to stably and uniformly drive the first connecting rod 411 to rotate; while for the rotation of the second connecting rod 421 it can be driven by a further drive rod of the drive member 3. During operation, first roller 412 sets up with the contact of second roller 422, and first connecting rod 411 and second connecting rod 421 operate simultaneously, drive first roller 412 and second roller 422 and rotate simultaneously respectively, and because first roller 412 can contact with second roller 422 during operation, can further improve the roll-in effect of second roller 422 to electric core.

Also mounted on the mounting frame 1 are adjustment mechanisms 5 for adjusting the roller assemblies 4 in the vertical direction, one adjustment mechanism 5 being connected to each roller assembly 4. This guiding mechanism 5 can cooperate the difference of electric core thickness to carry out the height of adjusting roller subassembly 4, finely tunes guiding mechanism 5 to the electric core of different specifications, and this guiding mechanism 5 includes the motor and the screw thread adjusting part of being connected with the motor output electricity.

And supporting plates 6 are arranged on the mounting rack 1 at the positions of the roller assemblies 4, the supporting plates 6 are used for lifting the conveying belt 2, and the contact surfaces of the supporting plates 6 and the conveying belt 2 are flat. Preferably, the height of the support plate 6 is smaller than the thickness of the cell. The supporting plate 6 is made of a steel plate, and the supporting plate 6 is matched with the roller assembly 4 at a rolling position, so that the situation that the rollers are uneven is avoided. And the height of the supporting plate 6 should be avoided from being set too high, and the battery core is only slightly supported so as to provide a supporting force for the bottom surface of the battery core.

Further, the vertical distance between each roller assembly 4 and the conveyor belt 2 is gradually reduced to realize multi-stage rolling of the battery cells by the roller assemblies 4. If the roller assemblies 4 are provided with 3 roller assemblies, namely a first roller assembly, a second roller assembly and a third roller assembly, the vertical distances between the lowest point of the first roller assembly, the second roller assembly and the third roller assembly and the upper surface of the conveying belt 2 are respectively marked as H₁、H₂、H₃Then H is₁>H₂>H₃And H is₁The range of (1) is 0 to 20 mm.

The utility model discloses a theory of operation and process: the battery cell to be rolled is placed on the conveyor belt 2, the conveyor belt 2 sequentially transmits the battery cell to the rolling position, when the battery cell passes through the first roller assembly, the supporting plate 6 lifts the battery cell, the roller assembly 4 starts to operate to roll the battery cell, the rolling direction of the roller assembly 4 is opposite to the transmission direction of the battery cell, after the first rolling is completed, the conveyor belt 2 continues to transmit the battery cell to the second roller assembly position, and the rolling is performed again until all rolling is completed. The roller assembly 4 is driven to operate by the driving part 3, the roller assembly 4 comprises two rubber rollers which are matched with each other to enhance the rolling effect of the roller.

Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (6)

1. The rolling mechanism for producing the battery cell is characterized by comprising a mounting rack (1), a conveying belt (2) and a driving piece (3), wherein the conveying belt (2) and the driving piece are arranged on the mounting rack (1);

at least two roller assemblies (4) are arranged above the mounting rack (1), each roller assembly (4) is sequentially arranged along the conveying direction of the battery cell, the roller assemblies (4) are electrically connected with the driving piece (3), and the rolling direction of the roller assemblies (4) is opposite to the conveying direction of the battery cell; the roller assembly (4) comprises a first rubber roller (41) and a second rubber roller (42) which are sequentially arranged from top to bottom;

the mounting frame (1) is also provided with an adjusting mechanism (5) for adjusting the roller assemblies (4) in the vertical direction, and each roller assembly (4) is connected with one adjusting mechanism (5); supporting plates (6) are arranged on the mounting frame (1) at the positions of the roller assemblies (4), the supporting plates (6) are used for lifting the conveying belt (2), and the contact surfaces of the supporting plates (6) and the conveying belt (2) are planes.

2. The rolling mechanism for producing the battery core according to claim 1, wherein an outer side surface of the first rubber roller (41) contacting the second rubber roller (42) is a convex arc surface.

3. The rolling mechanism for producing the battery core according to claim 1, wherein the outer circumferential surface of the second rubber roller (42) is provided with a rubber layer.

4. The cell production roller pressing mechanism according to claim 1, characterized in that the vertical distance between each roller assembly (4) and the conveyor belt (2) is gradually reduced to realize multi-stage rolling of the cells by the roller assemblies (4).

5. The rolling mechanism for producing battery cells according to claim 1, wherein the height of the supporting plate (6) is smaller than the thickness of the battery cells.

6. The roller pressing mechanism for battery cell production according to claim 1, wherein the first rubber roller (41) comprises a first roller (412) and a first connecting rod (411), the first roller (412) is rotatably connected with the first connecting rod (411), and two ends of the first connecting rod (411) are vertically installed on the mounting frame (1); the second rubber roll (42) comprises a second roller (422) and a second connecting rod (421), the second roller (422) is rotatably connected with the second connecting rod (421), and two ends of the second connecting rod (421) are vertically installed on the mounting frame (1).

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