Demagnetizing structure and battery cell production demagnetizing system

Abstract

The utility model relates to a demagnetizing structure and a battery cell production demagnetizing system, the demagnetizing structure comprises a mounting piece and a connecting piece, the mounting piece is fixed on a mounting surface of external equipment, the connecting piece is detachably connected with the mounting piece, and a demagnetizing bar is mounted on the connecting piece. When the device is used, the mounting piece is firstly fixed on process equipment such as lamination, and then the connecting piece is connected with the mounting piece, so that the magnetic foreign matters in a battery cell manufacturing material can be adsorbed by the magnetic removal rod; when the demagnetizing bar is used for a period of time, a large number of magnetic substances are adsorbed on the surface and the demagnetizing bar needs to be cleaned, the connecting piece can be detached from the mounting piece, and the demagnetizing bar is cleaned outside the equipment, so that foreign matters adsorbed on the demagnetizing bar can be prevented from falling on the surfaces of materials such as positive and negative electrode rolls, diaphragms and the like, and secondary pollution is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic removal for electric core manufacturing, and particularly relates to a magnetic removal structure and an electric core production magnetic removal system. BACKGROUND

[0002] With the increasing demand of lithium ion batteries for electric vehicles and energy storage systems, improving the safety and reliability of the electric core has become a research hotspot. Electric core short circuit is one of the main reasons leading to battery failure and safety hazards, therefore, it is of great practical significance to study methods to reduce the electric core short circuit rate. In the production process, the common electric core short circuit type is internal short circuit of the electric core, which refers to the direct contact or close contact between the positive and negative electrodes inside the battery due to some reasons (such as defects in the battery internal materials, improper manufacturing process, etc.), forming a low impedance current channel. In the normal production process, one of the most important reasons for causing electric core short circuit is the short circuit caused by foreign matter inside the electric core.

[0003] In the production and manufacturing process of the battery, especially on the key equipment of key processes such as coating and lamination, a magnetic removal bar is added to remove the magnetic foreign matter in the electric core manufacturing materials (such as pole winding, diaphragm, etc.), which can effectively adsorb and remove the foreign matter that may cause safety problems of the electric core. After the magnetic removal bar is used for a period of time, the adsorbed magnetic substances will accumulate on the surface of the magnetic removal bar, and usually need to be cleaned regularly by manual cleaning. However, the magnetic removal bar on the key equipment such as lamination is directly fixed on the equipment and cannot be moved, so cleaning requires personnel to enter the equipment to wipe the magnetic removal bar after shutdown. Although this process can clean the magnetic removal bar, it cannot avoid the risk of secondary pollution of the surface of the positive and negative winding, diaphragm and other materials caused by the falling of the foreign matter accumulated on the surface of the magnetic removal bar during the wiping process. UTILITY MODEL CONTENTS

[0004] Therefore, in view of the technical problems that the magnetic removal bar is fixed on the key process equipment such as lamination and is inconvenient to clean, and the foreign matter accumulated on the surface of the magnetic removal bar is easy to fall on the surface of the positive and negative winding, diaphragm and other materials during the wiping process, causing secondary pollution, the utility model provides a magnetic removal structure and an electric core production magnetic removal system.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a magnetic removal structure, which comprises a mounting piece, a connecting piece and a magnetic removal bar, the mounting piece is fixed on the mounting surface of an external equipment, the connecting piece is detachably connected with the mounting piece, and the magnetic removal bar is installed on the connecting piece.

[0007] The utility model discloses a magnet removing rod is embedded in the bottom of connecting piece.

[0008] As the further improvement of the above scheme of the utility model, the connecting piece and the mounting piece are detachably and slidably connected, and the position of the connecting piece on the mounting piece can be locked.

[0009] As the further improvement of the above scheme of the utility model, a sliding slot is formed on the connecting piece and matched with the mounting piece, and a socket is formed on the connecting piece and communicated with the sliding slot and allowing the mounting piece to freely enter and exit, one end of the mounting piece enters the sliding slot from the socket, and the mounting piece is slidably connected with the connecting piece.

[0010] As the further improvement of the above scheme of the utility model, the connecting piece is connected with a locking block which is detachably connected with the mounting piece.

[0011] As the further improvement of the above scheme of the utility model, a through hole is formed on the connecting piece and communicated with the sliding slot and arranged opposite to the socket, the locking block is arranged outside the through hole and matched with the outer circumferential surface of the through hole, and the locking block is connected with a stud; one end of the connecting piece close to the through hole is provided with an internal screw hole, and the stud is threadedly connected with the internal screw hole.

[0012] As the further improvement of the above scheme of the utility model, the mounting piece and the connecting piece are both cuboid in structure, and the top of the connecting piece is provided with a sliding slot.

[0013] As the further improvement of the above scheme of the utility model, the magnet removing rod is embedded in the bottom of the connecting piece.

[0014] The utility model also provides an electric core production magnet removing system which comprises the magnet removing structure.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In use, the mounting component is first fixed to the lamination and other process equipment, and then the connector is connected to the mounting component so that the demagnetizing rod can adsorb magnetic foreign objects in the battery cell manufacturing materials. When the demagnetizing rod has been used for a period of time and its surface has adsorbed a large amount of magnetic material and needs to be cleaned, the connector can be removed from the mounting component and the demagnetizing rod can be cleaned outside the equipment. This can prevent the foreign objects adsorbed on the demagnetizing rod from falling onto the surface of the positive and negative electrode rolls, separators and other materials, causing secondary pollution, and reducing short circuits in the battery cell manufacturing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a demagnetizing structure provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram showing the connection between the locking block and the mounting component in a demagnetizing structure provided in an embodiment of this utility model.

[0019] Reference numerals in the attached drawings: 1. Mounting component; 1-1. Internal threaded hole; 2. Connecting component; 2-1. Slide groove; 3. Demagnetizing rod; 4. Locking block; 4-1. Stud; 5. Mounting surface. Detailed Implementation

[0020] To facilitate understanding of this invention, a more comprehensive description of the invention will be provided below with reference to specific embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Reference Figure 1 This embodiment proposes a demagnetizing rod mounting structure, which includes a mounting component 1, a connecting component 2, and a demagnetizing rod 3.

[0023] Mounting component 1 is fixed to the mounting surface 5 of external equipment (such as laminating equipment). In this embodiment, mounting component 1 is a rectangular plate, which is horizontally fixed to the mounting surface 5 of the external equipment. The material of mounting component 1 is not specifically limited, as long as it meets the installation and fixing requirements of the demagnetizing rod 3; for example, it can be made of stainless steel. An internal threaded hole 1-1 is provided at the end of mounting component 1 away from the external equipment.

[0024] The connector 2 is used for a detachable sliding connection with the mounting part 1. In this embodiment, the connector 2 is a rectangular plate. The top of the connector 2 has a groove 2-1 that matches the mounting part 1. The two ends of the groove 2-1 extend through to form an insertion port and a through port, respectively. The insertion port allows the mounting part 1 to freely enter and exit the groove 2-1. The material of the connector 2 is not specifically limited, as long as it meets the installation and fixing requirements of the demagnetizing rod 3. For example, it can be an injection-molded plastic part. The connector 2 is provided with a locking block 4 at the through port. In this embodiment, combined with... Figure 2 The locking block 4 is circular, and its diameter is larger than the width of the opening so that it fits snugly against the outer circumference of the opening. The locking block 4 is connected to a stud 4-1, which is threaded into the internal threaded hole 1-1 of the mounting part 1. Thus, when the stud 4-1 is threaded into the internal threaded hole 1-1, the connecting part 2 is fixed and cannot be removed from the mounting part 1. When the stud is removed from the mounting part 1, the connecting part 2 can slide freely on the mounting part 1, and can even be detached.

[0025] The demagnetizing rod 3 is embedded in the bottom of the connector 2. In this embodiment, the demagnetizing rod 3 has a cylindrical structure and needs to protrude beyond the connector 2. The demagnetizing rod 3 can be integrally injection molded with the connector 2.

[0026] In this embodiment, the installation structure of the demagnetizing rod 3 involves first fixing the mounting part 1 to the mounting surface 5 of the laminating equipment, then connecting the connector 2 to the mounting part 1 and fixing the connector 2 to the mounting part 1 by locking the locking block 4, so that the demagnetizing rod 3 can adsorb magnetic foreign objects in the battery cell manufacturing material. When the demagnetizing rod 3 has been used for a period of time and a large amount of magnetic material has been adsorbed on its surface and needs to be cleaned, the locking block 4 can be rotated and removed, and then the connector 2 can be removed from the mounting part 1. The cleaning of the demagnetizing rod 3 can be carried out outside the equipment, which can prevent the foreign objects adsorbed on the demagnetizing rod 3 from falling onto the surface of the positive and negative electrode rolls, diaphragms and other materials, causing secondary pollution.

[0027] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0029] Each technical feature in the above-described embodiments can be combined with each other, and for the sake of brevity, not all possible combinations are described, however, it should be understood that the application embraces all such possible combinations.

[0030] The above-described embodiments are merely illustrative of the present application and do not limit the scope of the application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent protection of the present application should be subject to the appended claims.

Claims

1. A magnetic field elimination structure, characterized by comprising: The device comprises a mounting part (1), a connecting part (2) and a demagnetizing rod (3), the mounting part (1) is fixed on a mounting surface (5) of an external device, the connecting part (2) is detachably connected with the mounting part (1), and the demagnetizing rod (3) is mounted on the connecting part (2).

2. The magnetic removal structure of claim 1, wherein, The connecting part (2) is detachably and slidingly connected with the mounting part (1), and the position of the connecting part (2) on the mounting part (1) can be locked.

3. The magnetic removal structure of claim 2, wherein, A sliding groove (2-1) is formed on the connecting part (2) and matched with the mounting part (1), a socket is formed on the connecting part (2) and communicated with the sliding groove (2-1) and used for the mounting part (1) to freely enter and exit, one end of the mounting part (1) enters the sliding groove (2-1) from the socket, and the mounting part (1) is slidingly connected with the connecting part (2).

4. The magnetic removal structure of claim 3, wherein, The connecting part (2) is detachably connected with the mounting part (1).

5. The magnetic removal structure of claim 4, wherein, A through hole is formed on the connecting part (2) and communicated with the sliding groove (2-1) and arranged opposite to the socket, the locking block (4) is arranged outside the through hole and matched with the outer circumferential surface of the through hole, the locking block (4) is connected with a stud (4-1), and one end of the connecting part (2) close to the through hole is provided with an internal screw hole (1-1), the stud (4-1) is threadedly connected with the internal screw hole (1-1).

6. The magnetic removal structure of claim 3, wherein, The mounting part (1) and the connecting part (2) are both cuboid structures, and the top of the connecting part (2) is provided with the sliding groove (2-1).

7. The magnetic removal structure of claim 3, wherein, The demagnetizing rod (3) is embedded in the bottom of the connecting part (2).

8. An electric cell production demagnetization system characterized by comprising: The device comprises the demagnetizing structure as claimed in any one of claims 1-7. The device comprises the demagnetizing structure as claimed in any one of claims 1-7.

Images