Pole piece surface powder brushing device

Abstract

The utility model discloses a pole piece surface powder brushing device which comprises a base, a first brush, a second brush, a motor, two positioning air cylinders, two first gears and two second gears. Compared with a traditional pole piece surface powder brushing device, double motors are changed into a single motor, the two sets of gears are additionally arranged, the motors drive the first brush to rotate, meanwhile, the first gear and the second gear drive the second brush to rotate, the effect that the first brush and the second brush are reversed mutually is achieved through the counter-acting force of the gears, and the effect that the first brush and the second brush rotate reversely is achieved. The situation that the two brushes rotate in the same direction is avoided, so that the problem that the K value of the pole piece is poor is avoided, and the powder brushing effect is improved; rotation of the two brushes can be achieved only by arranging one motor, and compared with double motors in the prior art, power loss can be reduced; in addition, the front-back clamping distance between the two hairbrushes can be controlled, and the abnormal conditions that the two hairbrushes are mutually clamped and cannot rotate and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pole pieces, in particular to a pole piece surface powder brushing device. Background Art

[0002] Lithium-ion batteries have the advantages of high operating voltage, high energy ratio, long cycle life and no environmental pollution. They are not only widely used in mobile communication equipment and portable electronic equipment, but also widely used in large and medium-sized electric equipment such as electric vehicles, electric bicycles and electric tools. They are the main development direction of major battery manufacturers.

[0003] Among them, the positive and negative electrodes are important components of lithium-ion batteries. During the production process, the electrodes need to be cut into strips by a electrode cutting knife group. The metal debris that falls during the cutting and the coating slurry on the surface of the electrode will adhere to the surface of the electrode, which will cause a short circuit in the battery. Therefore, a electrode surface powder brushing device can be used to brush powder on the surface of the electrode after cutting.

[0004] The existing electrode surface powder brushing device usually includes a base, a first brush, a second brush, two motors and two positioning cylinders. The first brush and the second brush are arranged on the base with a front-to-back interval and are located at the same height. The two positioning cylinders are arranged on the base opposite to each other on the left and right. The two positioning cylinders are each provided with a cylinder push plate. The two ends of the second brush are respectively arranged on the two cylinder push plates. The two motors are respectively used to drive the first brush and the second brush to rotate.

[0005] However, the above-mentioned electrode surface powder brushing device has the following technical problems: (1) When the two brushes are running, the two motors rotate at the same time. Due to improper operation, the two motors may rotate in the same direction, that is, the first brush and the second brush may rotate in the same direction, which may lead to problems such as poor K value of the electrode and affect the powder brushing effect; (2) The above-mentioned electrode surface powder brushing device needs to be equipped with two motors, and the power loss is relatively high; (3) The front and rear clamping distance between the two brushes is achieved by pushing the second brush forward (that is, moving toward the first brush) through the positioning cylinder. This method is difficult to control the front and rear clamping distance between the two brushes, which may easily cause abnormal situations such as the two brushes being stuck to each other and unable to rotate. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a device for brushing powder on the surface of a pole piece, which can solve the above-mentioned technical problems.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions: a device for brushing powder on the surface of a pole piece, comprising a base, a first brush, a second brush, a motor and two positioning cylinders, the first brush and the second brush are arranged on the base with a front-to-back interval and the two are located at the same height, the motor is arranged on the base and connected to the first brush, the two positioning cylinders are arranged on the base opposite to each other left and right, the two positioning cylinders are each provided with a cylinder push plate, and the two ends of the second brush are respectively arranged on the two cylinder push plates, the device for brushing powder on the surface of the pole piece also includes two first gears and two second gears, the first gear and the second gear have the same diameter, the two first gears are respectively arranged at the two ends of the first brush, the two second gears are respectively arranged at the two ends of the second brush, and the first gear and the second gear are meshed with each other.

[0010] Preferably, the positioning cylinder is arranged on a cylinder bracket.

[0011] Preferably, a shaft sleeve is arranged on the cylinder push plate, and the second brush is arranged on the shaft sleeve.

[0012] Preferably, the electrode surface powder brushing device also includes a electrode slitting knife group, which is arranged on the base and located at the front end of the first brush. The electrode slitting knife group includes a first slitting knife roller and a second slitting knife roller arranged up and down.

[0013] Preferably, the pole piece surface powder brushing device further comprises a first guide roller, which is arranged on the base and located between the pole piece cutting knife group and the first brush.

[0014] Preferably, the pole piece surface powder brushing device further comprises a second guide roller, which is arranged on the base and located above the first brush.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a powder brushing device for the surface of an electrode, which has the following beneficial effects: (1) Compared with the traditional powder brushing device for the surface of an electrode, the utility model changes the dual motors into a single motor and adds two sets of gears. The motor drives the first brush to rotate, and at the same time drives the second brush to rotate through the first gear and the second gear. The reaction force of the gears is used to achieve the effect of reversing the rotation of the first brush and the second brush, thereby avoiding the situation where the two brushes rotate in the same direction, thereby avoiding problems such as poor K value of the electrode and improving the powder brushing effect; (2) The utility model only needs to be configured with one motor to realize the rotation of the two brushes. Compared with the dual motors in the prior art, it can reduce power loss; (3) The positioning cylinder pushes the second brush forward until the first gear and the second gear are meshed with each other, that is, pushes it until the two sets of gears are fit and bitten, which can achieve better control of the front and rear clamping distance between the two brushes, avoiding abnormal situations such as the two brushes being stuck to each other and unable to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first stereoscopic diagram of a device for brushing powder on the surface of a pole piece according to the utility model;

[0018] Figure 2 This is a second stereoscopic diagram of a device for brushing powder on the surface of a pole piece according to the utility model;

[0019] Figure 3 This is a third stereoscopic view of a device for brushing powder on the surface of a pole piece of the utility model (parts such as the pole piece cutting knife group, the first guide roller, and the second guide roller are not shown);

[0020] Figure 4 This is the fourth stereoscopic diagram of a pole piece surface powder brushing device of the utility model (only the first brush, the second brush, the motor, the positioning cylinder and other components are shown);

[0021] Figure 5 This is the fifth stereoscopic diagram of a pole piece surface powder brushing device of the utility model (only the first brush, the second brush, the motor, the positioning cylinder and other components are shown).

[0022] The numbers in the figure are: 1 base, 2 first brush, 3 second brush, 4 motor, 5 positioning cylinder, 6 cylinder push plate, 7 first gear, 8 second gear, 9 cylinder bracket, 10 sleeve, 11 pole piece cutting knife group, 12 first guide roller, 13 second guide roller, 14 pole piece. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5 The utility model provides a powder brushing device for the surface of a pole piece, comprising a base 1, a first brush 2, a second brush 3, a motor 4 and two positioning cylinders 5. The first brush 2 and the second brush 3 are arranged on the base 1 with a front-to-back interval and are located at the same height. The motor 4 is arranged on the base 1 and connected to the first brush 2. The two positioning cylinders 5 are arranged on the base 1 opposite to each other. The two positioning cylinders 5 are each provided with a cylinder push plate 6. The two ends of the second brush 3 are respectively arranged on the two cylinder push plates 6. The first brush 2 and the second brush 3 can be specifically roller brushes.

[0025] In addition, the pole piece surface powder brushing device of the utility model further includes two first gears 7 and two second gears 8. The diameters of the first gears 7 and the second gears 8 are the same, that is, the diameters of the two first gears 7 and the two second gears 8 are the same; the two first gears 7 are respectively arranged at the two ends of the first brush 2, and the two second gears 8 are respectively arranged at the two ends of the second brush 3, and the first gears 7 and the second gears 8 are meshed with each other.

[0026] It can be understood that when working, the second brush 3 is first pushed forward (i.e., pushed toward the first brush 2) by the two positioning cylinders 5. When the second gear 8 of the second brush 3 is pushed to engage with the first gear 7 of the first brush 2, that is, when the two sets of gears are pressed together and locked, the positioning cylinder 5 can stop pushing the second brush 3, and the pole piece 14 to be powdered is located between the first brush 2 and the second brush 3; further, the motor 4 rotates to drive the first brush 2 to rotate, and at the same time drives the second brush 3 to rotate through the first gear 7 and the second gear 8, wherein, since the rotation directions of the two meshing gears are opposite, the first brush 2 and the second brush 3 rotate in opposite directions; finally, the surface of the pole piece 14 is powdered using the first brush 2 and the second brush 3 rotating in opposite directions.

[0027] Specifically, the positioning cylinder 5 is arranged on the cylinder bracket 9; the cylinder push plate 6 is provided with a shaft sleeve 10, and the second brush 3 is arranged on the shaft sleeve 10. The second brush 3 can be moved by the positioning cylinder 5 pushing the cylinder push plate 6 to move.

[0028] In addition, the utility model may also include a pole piece slitting knife group 11, which is arranged on the base 1 and located at the front end of the first brush 2. The pole piece slitting knife group 11 includes a first slitting knife roller and a second slitting knife roller arranged up and down. The pole piece slitting knife group 11 is used to cut the pole piece into strips. The pole piece slitting knife group of the utility model is a prior art and will not be described in detail here.

[0029] Preferably, the utility model may further include a first guide roller 12 and a second guide roller 13, wherein the first guide roller 12 is disposed on the base 1 and is located between the pole piece slitting knife group 11 and the first brush 2, and the second guide roller 13 is disposed on the base 1 and is located above the first brush 2. It can be understood that the first guide roller 12 is used to conduct the pole piece after being slit by the pole piece slitting knife group 11 to the first brush 2 and the second brush 3 for powdering treatment; the second guide roller 13 is used to conduct the pole piece after powdering treatment to the next process operation.

[0030] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder brushing device for a pole piece surface, comprising a base, a first brush, a second brush, a motor and two positioning cylinders, wherein the first brush and the second brush are arranged on the base with a front-to-back interval and are located at the same height, the motor is arranged on the base and connected to the first brush, the two positioning cylinders are arranged on the base opposite to each other, the two positioning cylinders are each provided with a cylinder push plate, the two ends of the second brush are respectively arranged on the two cylinder push plates, and the characteristics are as follows: :The pole piece surface powder brushing device also includes two first gears and two second gears. The diameters of the first gear and the second gear are the same. The two first gears are respectively arranged at the two ends of the first brush, and the two second gears are respectively arranged at the two ends of the second brush. The first gear and the second gear are meshed with each other.

2. The electrode surface powder brushing device according to claim 1 is characterized in that: The positioning cylinder is arranged on the cylinder bracket.

3. The electrode surface powder brushing device according to claim 1 is characterized in that: The cylinder push plate is provided with a shaft sleeve, and the second brush is provided on the shaft sleeve.

4. The electrode surface powder brushing device according to claim 1 is characterized in that: It also includes a pole piece cutting knife group, which is arranged on the base and located at the front end of the first brush. The pole piece cutting knife group includes a first cutting knife roller and a second cutting knife roller arranged up and down.

5. The electrode surface powder brushing device according to claim 4 is characterized in that: It also includes a first guide roller, which is arranged on the base and located between the pole piece cutting knife group and the first brush.

6. The electrode surface powder brushing device according to claim 5 is characterized in that: It also includes a second guide roller, which is arranged on the base and located above the first brush.

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