CN206893709U - A kind of device for removing electrodes of lithium-ion batteries cutting powder burr - Google Patents

Abstract

The utility model discloses a device for removing burrs from lithium-ion battery pole pieces, which is composed of an air expansion shaft, an automatic dust collection device, a brush dust removal device, a material receiving barrel, and a rotating motor. The material receiving barrel passes through the The rotating shaft and the bearing are fixedly installed on the rotating motor, and the rotating motor is fixedly connected with the air expansion shaft through the rotor. An automatic dust-absorbing device is fixedly installed. When the device is running, the pole piece is placed at the inner end of the material receiving barrel. The automatic dust-absorbing device is also connected with a powder filter through a pipeline. The utility model adopts centralized treatment of burrs after slitting, saves energy, and at the same time greatly reduces burrs at the edge of slitting and cutting, and realizes effective control of electrode powder burrs. It is simple, increases efficiency, and improves the overall performance of the battery.

Description

A device for removing burrs from cutting powder for lithium-ion battery pole pieces

technical field

The utility model belongs to the technical field of lithium-ion battery pole piece manufacturing, and is mainly used for removing powder burrs on the cutting edge when the lithium-ion battery pole piece is cut, and in particular relates to a method for removing lithium-ion battery pole piece cutting powder Glitch device.

Background technique

Lithium-ion batteries have the advantages of high energy density, light weight, high working voltage, long cycle life, and no memory effect. They are widely used in military, medical, energy storage, information appliances and other fields. With the large-scale application of lithium-ion batteries , its safety becomes the primary consideration in the manufacturing process. During the manufacturing process of lithium-ion batteries, when the battery pole piece is cut, powder burrs are likely to be generated on the cutting edge. These burrs have different shapes and sizes. If it is serious, it will directly cause a short circuit and affect the yield of the cell. In severe cases, the diaphragm will be pierced during later use, resulting in a large self-discharge of the cell and reducing the cycle life and safety of the cell. The traditional slitting process adopts the brush and dust collection device on the slitting machine's own equipment. This method reduces the existence of powder burrs to a certain extent, but on the one hand, it cannot solve the burr problem fundamentally. Although the removal part burrs, but there are still burrs. On the other hand, the brush equipment and dust collection device of this device need to be opened all the way during the production process, which is not conducive to energy saving and low cost performance.

Utility model content

The purpose of the utility model is to provide a simple structure, high efficiency, energy-saving, and easy-to-use device for removing burrs from lithium-ion battery pole pieces.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for removing the burrs of the lithium-ion battery pole piece cutting powder, and its innovative point is: an air expansion shaft, an automatic dust collection device, and a brush dust removal device , a material receiving barrel and a rotating motor, the material receiving barrel is fixedly installed on the rotating motor through a rotating shaft and a bearing, the rotating motor is fixedly connected with the air expansion shaft through the rotor, and the brush dust removal device is fixedly installed on the collecting At the bottom of the material bucket, the other end of the brush dust removal device is fixedly equipped with an automatic dust collection device. A powder filter is connected.

Further, the brush dust removal device is installed at the bottom of the material receiving barrel, and the bottom of the material receiving barrel is evenly provided with dust suction holes, and the brush dust removal device is composed of several brushes. The bottom of the barrel is evenly provided with several movable brush holes, and the brushes are detachably connected to the movable brush holes.

Further, the movable brush hole is an elliptical groove, and the number of the movable brush hole and the dust suction hole is set at the bottom end of the material receiving bucket at an interval of 1:1.

Further, the automatic dust collection device is composed of a dust collection bag for powder recovery and an air pump, and the automatic dust collection device is connected to the material receiving barrel through a rotating motor interface.

The beneficial effects of the utility model are as follows:

(1) The utility model arranges movable brush holes at the bottom of the receiving barrel, installs the brushes in the movable brush holes, evenly brushes the cutting surface and vacuums it through the automatic dust collection device, which can effectively remove the cutting The side powder burrs greatly reduce the number and size of the powder burrs on the cutting side of the pole piece, the powder burrs are effectively controlled, and the cycle performance and safety performance of the battery are improved. In addition, this device is used after slitting, dust removal The time is about 5-10 minutes, and it does not need to be turned on constantly, which greatly improves efficiency and saves energy.

(2) The brush of the utility model is detachably connected to the movable brush hole, which can effectively realize the replacement of the brush, and realize the use of the device through partial replacement, which greatly improves the utilization rate of the device.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the perspective view of the receiving bucket of the utility model;

Fig. 3 is the bottom structure schematic diagram of the receiving bucket of the utility model;

Fig. 4 is the rendering of the lithium-ion battery pole piece before using the utility model;

Fig. 5 is an effect diagram of the pole piece of the lithium ion battery after using the utility model.

detailed description

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

As shown in Figure 1, it is a schematic diagram of the overall structure of the utility model, a device for removing the burrs of lithium-ion battery pole pieces, which consists of an air expansion shaft 5, an automatic dust collection device 4, a brush dust removal device 3, and a material receiving device. Composed of barrel 2 and rotating motor, the receiving barrel 2 is fixedly installed on the rotating motor through the rotating shaft and bearing, the rotating motor is fixedly connected with the air expansion shaft 5 through the rotor, and the brush dust removal device 3 is fixedly installed at the bottom of the receiving barrel 2 The other end of the brush dust removal device 3 is fixedly installed with an automatic dust collection device 4. When the device is running, the pole piece 1 is placed at the inner end of the material receiving barrel 2. The automatic dust collection device 4 is also connected to a powder filtering device through a pipeline. Device, automatic dust collector 4 is made up of powder recovery dust bag and air pump, and automatic dust collector is connected with receiving barrel 2 through the rotary motor interface. When the device is running, the pole piece 1, the rotating motor and the automatic dust collection device 4 are fixed on the air expansion shaft 5, and the receiving barrel 2 moves at a certain speed during the operation of the device to remove dust and vacuum. The dust removal time can be determined according to the pole piece 1 The volume and burrs should be adjusted appropriately, generally 8-12 minutes.

As shown in Figure 2, it is a perspective view of the receiving barrel 2 of the present invention. The receiving barrel 2 includes a receiving outer cylinder 22 and a base 21. The receiving outer cylinder 22 is made of stainless steel, and its diameter needs to be greater than the maximum diameter of the pole piece roll. The width needs to be greater than the maximum width of the pole piece roll. When in use, the pole piece 1 is completely wrapped by the material receiving bucket 2, and the brush dust removal device 3 is installed at the bottom of the material receiving bucket 2, and the bottom of the material receiving bucket 2 is evenly provided with Dust suction hole 31, hairbrush dedusting device 3 is made up of several hairbrushes, and the bottom end of material receiving barrel 2 is also evenly provided with several movable brushholes 32, and hairbrush and movable hairbrush holes 32 are detachably connected, It is convenient for the cleaning of the brush. There is a dust suction hole 31 next to each brush hole 32, which is convenient for timely removing the powder burrs brushed off. The brush is an anti-static brush, and the main material can be carbon fiber hair or animal hair. The length is about 1/5 of the width of the receiving bucket.

As shown in Figure 3, it is a schematic diagram of the bottom structure of the receiving barrel 2 of the present utility model, the movable brush hole 32 is an oval groove, and the quantity of the movable brush hole 32 and the dust suction hole 31 is set according to the interval of 1:1 At the bottom end of the material receiving barrel 2, when the device is running, the brush removes the powder burr at the cutting edge of the pole piece, and the dust suction device 4 is automatically opened for dust removal. The hairbrush of the utility model is detachably connected with the movable brush hole 32, which can effectively realize the replacement of the hairbrush, realize the use of the device through partial replacement, and greatly improve the utilization rate of the device.

As shown in Figure 4 and Figure 5, it is the effect diagram of the lithium ion battery pole piece before using the utility model and the effect diagram of the lithium ion battery pole piece after using the utility model. The size and quantity of the powder burrs at the cutting edge of the processed electrode roll are significantly reduced, which can effectively control the powder burrs at the cutting edge and improve the cycle performance and safety performance of the battery.

The utility model adopts centralized treatment of burrs after slitting, saves energy, and at the same time greatly reduces burrs at the edge of slitting and cutting, and realizes effective control of electrode powder burrs. It is simple, increases efficiency, and improves the overall performance of the battery.

The above-described embodiments are only preferred embodiments of the present utility model, and are not limitations to the technical solutions of the present utility model. As long as the technical solutions that can be realized on the basis of the above-mentioned embodiments without creative work, all should be regarded as falling into the scope of this invention. within the protection scope of utility model patents.

Claims (4)

1. A kind of 1. device for removing electrodes of lithium-ion batteries cutting powder burr, it is characterised in that：Filled by air-expanding shaft, automatic dust absorption Put, hairbrush dust arrester, rewinding bucket, rotation motor composition, the rewinding bucket is by rotating shaft and bearing and is fixedly mounted on rotation On motor, the rotation motor is fixedly connected by rotor and air-expanding shaft, and the hairbrush dust arrester is fixedly mounted on receipts Charging basket bottom, the other end of the hairbrush dust arrester are installed with an automatic dust-absorbing device, and the pole piece is transported in device During row, rewinding bucket inner end is placed in, the automatic dust-absorbing device is also associated with a powder material filter by pipeline.
2. A kind of 2. device for removing electrodes of lithium-ion batteries cutting powder burr according to claim 1, it is characterised in that： The hairbrush dust arrester is arranged on rewinding bucket bottom, and the rewinding bucket bottom is also evenly arranged with air suction opening, the hair Brush dust arrester is made up of several hairbrush, and the rewinding bucket bottom is also evenly arranged with several movable hairbrush holes, described Hairbrush and movable hairbrush hole are detachable connection.
3. A kind of 3. device for removing electrodes of lithium-ion batteries cutting powder burr according to claim 2, it is characterised in that： The movable hairbrush hole is an oval-shaped groove, and the quantity of the movable hairbrush hole and air suction opening is according to 1:1 is disposed on The bottom of rewinding bucket.
4. A kind of 4. device for removing electrodes of lithium-ion batteries cutting powder burr according to claim 1, it is characterised in that： The automatic dust-absorbing device reclaims dust settling pocket by powder and aspiration pump forms, and the automatic dust-absorbing device passes through rotation motor interface It is connected with rewinding bucket.