CN218123491U

CN218123491U - Device for improving flatness of battery core

Info

Publication number: CN218123491U
Application number: CN202220821739.9U
Authority: CN
Inventors: 倪长克; 陈安帮; 高鹏; 杨文超; 汪远兴; 姚明川; 董艳影; 王化东; 郭春朵
Original assignee: Zhejiang Liwei Electronic Technology Co ltd
Current assignee: Zhejiang Liwei Electronic Technology Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-12-23
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to the technical field of battery shaping devices, in particular to a device for improving the flatness of an electric core, which comprises a first shaping device, a second shaping device, a box body and a controller, wherein the first shaping device and the second shaping device are arranged in the box body in parallel, and the first shaping device and the second shaping device are respectively electrically connected with the controller; the first shaping device comprises a first conveyor belt and an adjusting device erected on the box body, and the second shaping device comprises a second conveyor belt. The utility model has the advantages of simple design structure, the operation is feasible, low cost places electric core on first conveyer belt, and start control ware makes electric core realize flattening work under first conveyer belt and second conveyer belt frictional force effect to improve the roughness of electric core, avoided the appearance of electric core defective products.

Description

Device for improving flatness of battery core

Technical Field

The utility model relates to a battery shaping device technical field, concretely relates to improve device of electric core roughness.

Background

In the production process of the lithium ion battery, after pole pieces are produced, the positive pole piece, the negative pole piece and the diaphragm are assembled and manufactured in a winding or lamination mode to form a basic battery cell.

No matter in winding or in the Z-type lamination, certain tension must be applied to the diaphragm to ensure the regularity among the positive plate, the diaphragm and the negative plate, however, the tension in the process can cause the diaphragm to be elongated in the tape running direction, and the shrinkage of the diaphragm in the tape running direction is large, so that the diaphragm can seriously extrude the plate, and thus after the cell assembling process, especially the winding process, the cell deforms, and the deformed cell has poor appearance flatness and also has the defects of diaphragm wrinkles and the like inside.

This leads to quality problems such as low capacity, poor cycle performance, and rapid self-discharge, especially for thicker wound cells, and the problem of deformation after winding is particularly significant. In addition, the consistency of the thickness of the loose battery cell is poor, which can affect the battery cell casing process, increase the difficulty of the casing process, even cause the damage of the battery cell during casing, and form a plurality of defective products. Therefore, the cell flatness needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: for solving the problem of the prior art, the device for improving the flatness of the battery core is provided, the device can improve the flatness of the battery core, and the occurrence of defective products of the battery core is avoided.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a device for improving the flatness of a battery cell comprises a first shaping device, a second shaping device, a box body and a controller, wherein the first shaping device and the second shaping device are arranged on the box body in parallel, and are respectively and electrically connected with the controller; the first shaping device comprises a first conveyor belt and an adjusting device arranged on the box body, and the second shaping device comprises a second conveyor belt.

As an improvement of the device for improving the flatness of the battery core, the cross section of the first conveyor belt and the cross section of the second conveyor belt are arranged in a linear structure or an arc-line structure.

As an improvement of the device for improving the flatness of the battery core, the first conveying belt is at least matched with two rollers.

As an improvement of the device for improving the flatness of the battery core, the first conveyor belt and the second conveyor belt are provided with pressure sensors.

As an improvement of the device for improving cell flatness, the adjusting device includes a first track and a second track parallel arranged with the first track, the first track and the second track are erected on the first conveyor belt.

As an improvement of the device for improving the flatness of the battery core, the first rail and the second rail are coated with at least one layer of teflon.

As an improvement of the device for improving the flatness of the battery core, the box body is set to be a square structure.

As an improvement of the device for improving the flatness of the battery core, the device further comprises a battery core frame for fixing the battery core.

As an improvement of the device for improving the flatness of the battery core, a protective battery core layer is arranged in the frame of the battery core.

As an improvement of the device for improving the flatness of the battery core, the controller is a speed controller.

The utility model has the advantages that: the utility model has the advantages of simple design structure, the operation is feasible, low cost will treat that flattening electricity core is placed on first conveyer belt, start control ware afterwards for treat that flattening electricity core realizes flattening work under first conveyer belt and second conveyer belt frictional force effect, thereby avoided the appearance of electric core defective products.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided to explain the invention and not to constitute an undue limitation on the invention. In the drawings:

fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is a second schematic structural diagram of the present invention;

fig. 3 is a third schematic structural diagram of the present invention;

the device comprises a first shaping device, a second shaping device, a box body, a 4 controller, a 5 pressure sensor, a 6 Teflon layer, a 7 cell frame, an 8 cell, a 11 first conveyor belt, a 12 adjusting device, a 21 second conveyor belt, a 121 first rail and a 122 second rail.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. The description and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, that a person skilled in the art will be able to solve the technical problem within a certain error range, substantially to achieve the technical result.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element 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 invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.

As shown in fig. 1-3, a device for improving flatness of a battery cell includes a first shaping device 1, a second shaping device 2, a box 3, and a controller 4, where the first shaping device 1 and the second shaping device 2 are disposed on the box 3 in parallel, the first shaping device 1 and the second shaping device 2 are respectively electrically connected to the controller 4, and the controller 4 is a speed controller 4; the first shaping device 1 comprises a first conveyor belt 11 and an adjusting device 12 erected on the box body 3, the adjusting device 12 is used for adjusting the width of the battery cell 8 to be leveled, so that the battery cell 8 to be leveled is more stable in subsequent leveling work, and the second shaping device 2 comprises a second conveyor belt 21; the relative positions of the first conveyor belt 11 and the second conveyor belt 21 can be adjusted to adapt to cells 8 to be leveled with different thicknesses.

Preferably, the cross sections of the first conveyor belt 11 and the second conveyor belt 21 are configured to be linear structures or arc-shaped structures, and when the cross sections are configured to be arc-shaped structures, the local pressure intensity of the battery cell just entering the first conveyor belt 11 and the second conveyor belt 21 can be effectively prevented from being too high. The first conveyor belt 11 is at least matched with two rollers, and the number of the rollers can be set according to the tightness degree of the conveyor belt, and is not specifically limited here. The first conveyor belt 11 and the second conveyor belt 21 are both provided with pressure sensors 5, and the pressure sensors 5 can detect the stress condition of the battery cell 8.

Preferably, the adjusting device 12 includes a first rail 121 and a second rail 122 disposed parallel to the first rail 121, and the first rail 121 and the second rail 122 are erected on the first conveyor 11. The surfaces of the first rail 121 and the second rail 122 are coated with at least one teflon layer 6, and the teflon layer 6 can prevent the electric core 8 from being damaged during leveling; the number of the Teflon layer 6 is set according to the standard of use.

Preferably, the box 3 is a square structure, the box 3 can be a cuboid or a cube, and the material of the box 3 is not limited to steel, wood, plastic and other materials. The utility model discloses can also set up the panel board on box 3, this panel board can show the roll-moving speed of first conveyer belt 11 and second conveyer belt 21, the time that electric core 8 passes through box 3 etc..

Preferably, the utility model discloses still including the electric core frame 7 that is used for fixed electric core 8, the size of electric core frame 7 slightly is greater than the electric core size that needs the flattening for the electric core of different models can both be fixed in electric core frame 7 easy to assemble. In addition, a battery cell protective layer is arranged in the battery cell frame 7, and the battery cell protective layer can be a teflon material layer or a coating for protecting the battery cell, so that the battery cell can be well protected. The frame can move or combine various modes, and only the frame is suitable for fixing the battery cells of different models.

The utility model discloses a theory of operation is: to treat that flattening electricity core 8 is placed in the electric core frame 7 of first conveyer belt 11, the clearance width of first track 121 and second track 122 of the first conveyer belt 11 left and right sides has been adjusted for treat that the electric core 8 of flattening can get into box 3 smoothly in, electric core 8 makes electric core 8 realize the flattening action under the effect of first conveyer belt 11 and the 21 laminating frictional force of second conveyer belt, flows out box 3 at last, has just so accomplished the work of flattening.

The method comprises the following steps: the time for the battery cell 8 to be leveled to pass through the first conveyor belt 11 and the second conveyor belt 21 is 1-60s, and the pressure applied to the battery cell 8 is 0.1-2Mpa.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides an improve device of electric core roughness which characterized in that: the device comprises a first shaping device, a second shaping device, a box body and a controller, wherein the first shaping device and the second shaping device are arranged in the box body in parallel, and the first shaping device and the second shaping device are respectively and electrically connected with the controller; the first shaping device comprises a first conveyor belt and an adjusting device erected on the box body, and the second shaping device comprises a second conveyor belt.

2. The device for improving the flatness of the battery core according to claim 1, wherein: the cross sections of the first conveyor belt and the second conveyor belt are arranged to be linear structures or arc-shaped structures.

3. The device of claim 1 for improving the flatness of the battery cell, which is characterized in that: the first conveyor belt is matched with at least two rollers.

4. The device of claim 1 for improving the flatness of the battery cell, which is characterized in that: the first conveyor belt and the second conveyor belt are provided with pressure sensors.

5. The device for improving the flatness of the battery core according to claim 1, wherein: the adjusting device comprises a first rail and a second rail arranged in parallel with the first rail, and the first rail and the second rail are erected on the first conveyor belt.

6. The device of claim 5, wherein the cell flatness is improved by: the surfaces of the first rail and the second rail are coated with at least one Teflon layer.

7. The device for improving the flatness of the battery core according to claim 1, wherein: the box body is of a square structure.

8. The device of claim 1 for improving the flatness of the battery cell, which is characterized in that: the battery cell frame is used for fixing the battery cell.

9. The device of claim 8, wherein the cell flatness is improved by: and a battery cell protective layer is arranged in the battery cell frame.

10. The device of claim 1 for improving the flatness of the battery cell, which is characterized in that: the controller is a speed controller.