A pole piece burr cleaning device

Abstract

The utility model discloses a pole piece burr cleaning device, comprising an ultrasonic cleaning unit and a dust removal unit, wherein the ultrasonic cleaning unit is fixedly connected to one end of the dust removal unit, the air outlet of the ultrasonic cleaning unit is connected to the input end of the dust removal unit, an ultrasonic generating chamber is provided in the ultrasonic cleaning unit, the end of the ultrasonic generating chamber away from the dust removal unit is open, and a sealing silencer plate is fixed to the open portion, so that the ultrasonic generating chamber forms a closed chamber structure. In the utility model, the ultrasonic generating chamber can be sealed by setting the sealing silencer plate, and the airflow noise overflow caused by the high-speed airflow can also be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, and more specifically to a pole piece burr cleaning device. Background Art

[0002] If the burrs generated during the cutting process of the pole piece are not well controlled, it will cause the subsequent lithium battery short-circuit rate to be high, the self-discharge to be large, and the module to have a greater safety risk. The burrs and edge dust problems caused by cutting are difficult to find and deal with, and are currently a difficult problem in the lithium battery industry. The cavity flow-induced oscillation phenomenon is widespread, mostly in the form of disadvantages. When high-speed airflow flows through the cavity, it generates strong vibrations, which will cause vibration and fatigue damage to the equipment structure.

[0003] Although the high-speed airflow generates ultrasonic airflow after passing through the cavity, which can clean the burrs on the pole piece, the high-speed airflow still brings problems such as airflow noise. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to reduce the overflow of airflow noise caused by high-speed airflow.

[0005] The utility model solves the above-mentioned technical problems through the following technical means: a pole piece burr cleaning device, comprising an ultrasonic cleaning unit and a dust removal unit, wherein the ultrasonic cleaning unit is fixedly connected to one end of the dust removal unit, the air outlet end of the ultrasonic cleaning unit is connected to the input end of the dust removal unit, an ultrasonic generating chamber is provided in the ultrasonic cleaning unit, the end of the ultrasonic generating chamber away from the dust removal unit is open, and a sealing silencer plate is fixed at the open position, so that the ultrasonic generating chamber forms a closed cavity structure.

[0006] As a preferred technical solution, a cavity adapted to the pole piece is provided at one end of the dust removal unit facing the ultrasonic cleaning unit, a dust removal cavity is provided on the dust removal unit, and a tail fin block is provided on the inner wall of the dust removal cavity.

[0007] As a preferred technical solution, the dust removal chamber includes a first channel and a second channel, the second channel is larger than the first channel, and the second channel also passes through a gradual channel and the first channel.

[0008] As a preferred technical solution, the dust removal unit includes a top wall and a bottom wall arranged in parallel and a side wall connected to the same side of the top wall and the bottom wall, the top wall, the bottom wall and the side wall enclose the cavity, the other side of the top wall and the bottom wall forms a first opening, the edge of the pole piece extends into the cavity from the first opening, a dust removal chamber is provided in the dust removal shell, and a second opening connected to the dust removal chamber is provided on the side wall.

[0009] As a preferred technical solution, the dust removal unit includes an upper shell and a lower shell, and the upper shell and the lower shell are enclosed to form the dust removal chamber.

[0010] As a preferred technical solution, the tail fin block extends from the inner wall of the first channel to the second channel.

[0011] As a preferred technical solution, one end of the dust removal unit connected to the ultrasonic cleaning unit is arc-shaped.

[0012] As a preferred technical solution, the ultrasonic cleaning unit includes an air pipe joint, a branch plate, a generating plate, a blowing mounting plate, and an air blowing plate. The air pipe joint is fixedly connected to the generating plate through the branch plate, and the generating plate is fixedly connected to the blowing plate through the blowing mounting plate. An acceleration chamber is provided in the branch plate, at least one ultrasonic generating chamber is provided in the generating plate, an ultrasonic guide port is provided in the blowing mounting plate, a blowing chamber is provided in the blowing plate, and a blowing chamber outlet is provided at one end of the blowing chamber facing the pole piece, and the acceleration chamber, ultrasonic generating chamber, ultrasonic guide port, and blowing chamber are connected.

[0013] As a preferred technical solution, the outlet of the blowing cavity is arranged at an angle.

[0014] As a preferred technical solution, it also includes a dust hood, which is fixedly connected to one end of the dust removal unit and communicated with the output end of the dust removal unit.

[0015] The advantages of the utility model are:

[0016] (1) In the present invention, by providing a sealing silencer plate, the ultrasonic generating chamber can be sealed and the airflow noise spillover caused by high-speed airflow can be reduced.

[0017] (2) In the present invention, the tail fin block is provided to increase the resistance, slow down the airflow inside, consume the excess kinetic energy, prevent the problem of airflow backflow, and reduce noise.

[0018] (3) In the present invention, by making one end connecting the dust removal unit and the ultrasonic cleaning unit into an arc shape, the airflow can be gathered to alleviate the problem of airflow overflow that may be caused by high-speed jets. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0020] Figure 2 A schematic diagram of airflow provided for an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the upper housing structure provided by an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the cross-sectional structure of the dust removal chamber provided in an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of the tail fin block structure provided by an embodiment of the utility model;

[0024] Figure 6 A schematic diagram of the structure of a dust removal unit provided in an embodiment of the utility model;

[0025] Figure 7 A schematic diagram of the cross-sectional structure of a dust removal unit provided in an embodiment of the utility model;

[0026] Figure 8 A schematic diagram of the outlet structure of the blowing cavity provided in an embodiment of the utility model;

[0027] Figure numbers: 1. Pole piece; 2. Ultrasonic cleaning unit; 3. Dust removal unit; 4. Airflow; 5. Upper shell; 6. Lower shell; 7. Mounting plate; 8. Sealing gasket; 9. Dust hood; 10. First channel; 11. Second channel; 12. Gradient channel; 13. Tail fin block; 14. Air pipe joint; 15. Branch plate; 16. Generator plate; 17. Sealing silencer plate; 18. Blowing mounting plate; 19. Blowing plate; 20. Acceleration chamber; 21. Ultrasonic generating chamber; 22. Ultrasonic guide port; 23. Blowing chamber; 24. Blowing chamber outlet. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0029] See also Figure 1A pole piece burr cleaning device comprises an ultrasonic cleaning unit 2, a dust removal unit 3 and a dust hood 9. The ultrasonic cleaning unit 2 is fixedly connected to one end of the dust removal unit 3, the air outlet of the ultrasonic cleaning unit 2 is connected to the input end of the dust removal unit 3, the dust hood 9 is fixedly connected to one end of the dust removal unit 3 and is connected to the output end of the dust removal unit 3, an ultrasonic generating chamber 21 is provided in the ultrasonic cleaning unit 2, the end of the ultrasonic generating chamber 21 away from the dust removal unit 3 is open, and a sealing muffler plate 17 is fixed to the open position, and The ultrasonic generating cavity 21 forms a closed cavity structure, and the sealing silencer plate 17 is made of rubber material to block the transmission of mechanical waves. A cavity matching the size of the pole piece 1 is provided at one end of the dust removal unit 3 facing the ultrasonic cleaning unit 2. A dust removal cavity is provided on the dust removal unit 3, and a tail fin block 13 is provided on the inner wall of the dust removal cavity. The setting of the tail fin block 13 can prevent the problem of airflow backflow and reduce noise; the dust hood 9 is fixedly connected to the dust removal unit 3 through the mounting plate 7, and a sealing gasket 8 is provided at the connection.

[0030] See also Figure 2 The end of the dust removal unit 3 connected to the ultrasonic cleaning unit 2 is arc-shaped, which can gather the airflow and alleviate the problem of airflow overflow that may be caused by the high-speed jet.

[0031] See also Figure 3 , Figure 4 , Figure 5 The dust removal unit 3 includes a top wall and a bottom wall arranged in parallel and a side wall connected to the same side of the top wall and the bottom wall. The top wall, the bottom wall and the side wall form a cavity. The other side of the top wall and the bottom wall forms a first opening. The edge of the pole piece 1 extends into the cavity from the first opening. A dust removal cavity is provided in the dust removal shell. A second opening connected to the dust removal cavity is provided on the side wall. The dust removal cavity includes a first channel 10, a gradual channel 12, and a second channel 11. The size of the second channel 11 is larger than that of the first channel 10. The second channel 11 is also connected to the first channel 10 through the gradual channel 12. The tail fin block 13 extends from the inner wall of the first channel 10 to the second channel 11; the gradual channel 12 can prevent the backflow problem caused by the excessively high speed airflow 4 in the dust removal cavity not being completely sucked away by the dust hood 9; at the same time, the negative pressure of the dust removal cavity will always remain in the open state, so that the problem of material drop and dust generated during cutting can be handled at the same time;

[0032] In this embodiment, the dust removal unit 3 includes an upper shell 5 and a lower shell 6. The upper shell 5 and the lower shell 6 enclose a dust removal chamber. The top wall is the bottom outer wall of the upper shell 5, and the bottom wall is the top outer wall of the lower shell 6. The first channel 10 is connected to the second opening, and the second channel 11 is connected to the dust hood 9.

[0033] See also Figure 6 , Figure 7 , Figure 8The ultrasonic cleaning unit 2 includes an air pipe joint 14, a branch plate 15, a generating plate 16, an air blowing mounting plate 18, and an air blowing plate 19. The air pipe joint 14 is fixedly connected to the generating plate 16 through the branch plate 15, and the generating plate 16 is fixedly connected to the air blowing mounting plate 18 and the air blowing mounting plate 19. An acceleration chamber 20 is provided in the branch plate 15, and at least one ultrasonic generating chamber 21 is provided in the generating plate 16. In this embodiment, taking two ultrasonic generating chambers 21 as an example, an ultrasonic guide port 22 is provided in the air blowing mounting plate 18, and an air blowing chamber 23 is provided in the air blowing plate 19. An air blowing chamber outlet 24 is provided at one end of the air blowing chamber 23 facing the pole piece 1. The acceleration chamber 20, the ultrasonic generating chamber 21, the ultrasonic guide port 22, and the air blowing chamber 23 are connected, and the air blowing chamber outlet 24 is inclined; the air blowing chamber outlet 24 is directly facing the burrs of the pole piece 1, and the burrs are cleaned;

[0034] Among them, the ultrasonic generating cavity 21 includes three first cavities, a second cavity, and a third cavity which are connected in series in sequence. The acceleration cavity 20 is used to pressurize and speed up the airflow 4 at the input end, and increase the wind speed at the inlet of the first cavity to more than 200m / s; the first cavity is used to convert the high-speed airflow after pressurization and speed-up in the acceleration cavity 20 into a shear airflow, and the second cavity is used to convert the pressurized shear airflow in the first cavity into an ultrasonic airflow; the third cavity is used to convert the ultrasonic airflow in the second cavity into a stable ultrasonic airflow; the air pressure of the trachea joint 14 is at least above 20Kpa, and the airflow 4 is separated, detached, impacted, rebounded, and resonated by the edge of the cavity to generate strong sound wave oscillations, and the oscillation frequency can reach more than 20KHz, and no ultrasonic transducer is used.

[0035] When the airflow flows in from the flow channel entrance and reaches the front edge of the first cavity through the flow channel center, the airflow on the two sides of the flow channel center wall develops into self-shear flow and flows into the first cavity, forming a large vortex that occupies most of the cavity position in the cavity; the airflow in the flow channel center continues to flow downstream. The two parts of the airflow finally meet at the flow channel center at the rear edge of the cavity and continue to flow downstream. This process increases the airflow velocity in the flow channel center. The airflow is accelerated in the process of flowing from the front edge of the cavity to the rear edge of the cavity, and is much greater than the airflow velocity at the vortex in the cavity. The pressure in the flow channel center decreases from the flow channel entrance to the exit. The pressure at the vortex in the two groups of cavities is lower than the pressure in the flow channel center. The pressure in the second cavity is lower than that in the first cavity, and negative pressure appears at the vortex in the second group of cavities.

[0036] When a third cavity is set in the ultrasonic generating cavity 21, since the flow path of the fluid in the cavity becomes longer, the time required for the outlet velocity to reach stability is longer than when one or two groups of cavities are arranged. In addition, as the number of cavity groups increases, the outlet velocity increases approximately linearly. Increasing the number of cavity groups can effectively increase the airflow velocity at the outlet.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pole piece burr cleaning device, characterized in that: The ultrasonic cleaning unit (2) comprises an ultrasonic cleaning unit (2) and a dust removal unit (3), wherein the ultrasonic cleaning unit (2) is fixedly connected to one end of the dust removal unit (3), the air outlet end of the ultrasonic cleaning unit (2) is communicated with the input end of the dust removal unit (3), an ultrasonic generating chamber (21) is provided in the ultrasonic cleaning unit (2), the end of the ultrasonic generating chamber (21) away from the dust removal unit (3) is open, and a sealing sound-absorbing plate (17) is fixed to the open portion, so that the ultrasonic generating chamber (21) forms a closed chamber structure.

2. The pole piece burr cleaning device according to claim 1, characterized in that: The dust removal unit (3) is provided with a cavity matched with the pole piece (1) at one end facing the ultrasonic cleaning unit (2), and a dust removal cavity is provided on the dust removal unit (3), and a tail fin block (13) is provided on the inner wall of the dust removal cavity.

3. The pole piece burr cleaning device according to claim 2, characterized in that: The dust removal chamber comprises a first channel (10) and a second channel (11); the second channel (11) is larger than the first channel (10); and the second channel (11) is connected to the first channel (10) via a gradual channel (12).

4. The pole piece burr cleaning device according to claim 2, characterized in that: The dust removal unit (3) comprises a top wall and a bottom wall arranged in parallel and a side wall connected to the same side of the top wall and the bottom wall, the top wall, the bottom wall and the side wall enclose the cavity, the other side of the top wall and the bottom wall forms a first opening, the edge of the pole piece (1) extends into the cavity from the first opening, a dust removal cavity is provided in the dust removal shell, and a second opening connected to the dust removal cavity is provided on the side wall.

5. The pole piece burr cleaning device according to claim 2, characterized in that: The dust removal unit (3) comprises an upper shell (5) and a lower shell (6), and the upper shell (5) and the lower shell (6) enclose the dust removal chamber.

6. The pole piece burr cleaning device according to claim 3, characterized in that: The tail fin block (13) extends from the inner wall of the first channel (10) into the second channel (11).

7. The pole piece burr cleaning device according to claim 1, characterized in that: One end of the dust removal unit (3) connected to the ultrasonic cleaning unit (2) is arc-shaped.

8. The pole piece burr cleaning device according to claim 1, characterized in that: The ultrasonic cleaning unit (2) comprises an air pipe joint (14), a branch plate (15), a generating plate (16), an air blowing mounting plate (18), and an air blowing plate (19). The air pipe joint (14) is fixedly connected to the generating plate (16) via the branch plate (15), and the generating plate (16) is fixedly connected to the air blowing mounting plate (18). An acceleration chamber (20) is provided in the branch plate (15), and at least one ultrasonic generating chamber (21) is provided in the generating plate (16). An ultrasonic guide port (22) is provided in the air blowing mounting plate (18), and an air blowing chamber (23) is provided in the air blowing plate (19). An air blowing chamber (23) is provided at one end of the air blowing chamber (23) facing the pole piece (1). The acceleration chamber (20), the ultrasonic generating chamber (21), the ultrasonic guide port (22), and the air blowing chamber (23) are connected.

9. The pole piece burr cleaning device according to claim 8, characterized in that: The blowing cavity outlet (24) is arranged obliquely.

10. The pole piece burr cleaning device according to claim 1, characterized in that: It also comprises a dust hood (9), which is fixedly connected to one end of the dust removal unit (3) and is communicated with the output end of the dust removal unit (3).

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