Ultrasonic dust removal device for cleaning interior of lithium ion aluminum shell
By using an ultrasonic dust removal device inside the aluminum shell of a lithium-ion battery, combined with positive and negative pressure blowing and suction technology, the problem of residual particles on the surface of the aluminum shell is solved, efficient cleaning is achieved, and battery performance and production efficiency are improved.
Patent Information
- Application Number
- CN202422715906.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-07
AI Technical Summary
In the existing technology, the metal and non-metallic particles inside the aluminum shell of lithium-ion batteries cannot be effectively removed by cleaning devices, resulting in a large amount of particles remaining on the surface of the aluminum shell, affecting battery performance and increasing process costs.
It uses an ultrasonic dust removal device, combined with positive and negative pressure blowing and suction technology. The ultrasonic wave generated by the ultrasonic generator makes the aluminum shell resonate, destroying the adhesion of dust particles, and uses the negative pressure chamber to absorb the fallen dust to achieve efficient cleaning.
It significantly improves the cleanliness inside the aluminum shell, reduces the defective product rate, improves the quality and production efficiency of the battery, and reduces costs.
Smart Images
Figure CN223382212U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of lithium-ion battery technology, and specifically relates to an ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell. Background Art
[0002] During the production process of aluminum-shell lithium-ion batteries, metal and non-metallic particles will adhere to the surface of the aluminum shell after cutting and polishing. The fallen dust particles can easily puncture the diaphragm on the electrode surface and cause a short circuit. Therefore, before assembling the aluminum shell with the battery cell, the inside of the aluminum shell needs to be dusted to ensure the cleanliness of the aluminum shell and the absence of impurities in the aluminum shell to ensure the performance of the lithium-ion battery.
[0003] Currently, the cleaning devices for metal and non-metallic particles inside the aluminum shell are positive and negative pressure, blowing and suction dust removal devices. Metal and non-metallic particles cannot be effectively removed, and a large amount of particles still remain on the surface of the aluminum shell, affecting the quality of the process and increasing the cost of battery cell production. Utility Model Content
[0004] The present application aims to provide an ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell, to solve the problem that metal and non-metallic particles cannot be effectively removed during the positive and negative pressure dust removal process.
[0005] In order to solve the above technical problems, this application is implemented as follows:
[0006] The embodiment of the present application proposes an ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell, comprising: a dust removal component, a filter component, and a control component;
[0007] The dust removal assembly includes a positive pressure chamber, a negative pressure chamber and an ultrasonic generating device, and the ultrasonic generating device is installed in the positive pressure chamber;
[0008] The filter assembly includes a gas channel and a host, one end of the gas channel is connected to the dust removal assembly, and the other end is connected to the host; the host is electrically connected to the control assembly.
[0009] Optionally, the positive pressure chamber is located at the center of the dust removal assembly, and the negative pressure chamber surrounds the positive pressure chamber; the end of the dust removal assembly close to the gas channel is the first end, and the end away from the gas channel is the second end, and the positive pressure chamber and the negative pressure chamber gradually shrink from the first end to the second end.
[0010] Optionally, the gas channel includes a positive pressure gas channel, a negative pressure gas channel and a line channel, the positive pressure gas channel is connected to the positive pressure chamber, the negative pressure gas channel is connected to the negative pressure chamber, and the line channel is electrically connected to the ultrasonic generating device.
[0011] Optionally, the positive-pressure chamber includes a first through hole and a second through hole, the first through hole is connected to the positive-pressure gas channel, and the second through hole is used to output positive-pressure gas; the negative-pressure chamber includes a third through hole and a fourth through hole, the third through hole is connected to the negative-pressure gas channel, and the fourth through hole is used to absorb particles falling off the surface of the aluminum shell; the pressure of the positive-pressure chamber is greater than the pressure of the negative-pressure chamber.
[0012] Optionally, the fourth through hole is located on the second end surface and the side wall of the dust removal assembly, and the metal and non-metal particles falling off the surface of the aluminum shell enter the negative pressure chamber through the fourth through hole.
[0013] Optionally, the ultrasonic generating device includes an ultrasonic generator, a transducer and an amplitude modulator, which are installed on the inner wall of the positive pressure chamber, the ultrasonic generator is close to the first through hole, and the transducer is installed between the ultrasonic generator and the amplitude modulator; the amplitude modulator is close to the second through hole.
[0014] Optionally, brackets are also included;
[0015] The dust removal component is installed at the bottom of the bracket, and the aluminum shell is buckled on the bracket to form a closed space.
[0016] Optionally, a fifth through hole is provided at the bottom of the bracket, and the filter assembly further includes a negative pressure dust removal channel, one end of the negative pressure dust removal channel is connected to the fifth through hole, and the other end is connected to the host.
[0017] Optionally, the dust removal component further includes a negative pressure sensor, which is installed in the negative pressure chamber and electrically connected to the control component for monitoring pressure changes in the negative pressure chamber.
[0018] Optionally, the frequency of the oscillating wind generated by the dust removal component is 25-27KHz, and the dust removal wind speed is 50-70m / s.
[0019] In the embodiments of the present application, an ultrasonic generating device is added to the existing positive and negative pressure dust removal device. The ultrasonic wave generated by the ultrasonic generating device acts on the aluminum shell, causing the aluminum shell sensor to resonate, eliminating the adhesion of dust particles inside the aluminum shell, and using three movement modes (single or mixed) of pulling, rolling and sliding to separate the dust particles from the internal surface of the aluminum shell. Combined with the vacuum suction generated by the negative pressure chamber, the detached dust is sucked away, which can effectively remove the metal and non-metallic particles inside the aluminum shell, improve the quality of the battery product, and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0021] Figure 1Schematic diagram of an ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to an embodiment of the present application;
[0022] Figure 2 is a cross-sectional view of a dust removal assembly according to an embodiment of the present application;
[0023] Figure 3 is a schematic diagram of an ultrasonic generating device according to an embodiment of the present application;
[0024] Figure 4 is a schematic diagram of an ultrasonic dust removal device including a bracket according to an embodiment of the present application;
[0025] Figure 5 It is a schematic diagram of an ultrasonic dust removal device including a bracket and an aluminum shell according to an embodiment of the present application.
[0026] Figure markings: 1: dust removal assembly; 11: positive pressure chamber; 111: first through hole; 112: second through hole; 12: negative pressure chamber; 121: third through hole; 122: fourth through hole; 13: ultrasonic generating device; 131: ultrasonic generator; 132: transducer; 133: amplitude modulator; 134: 14: negative pressure dust removal channel; 15: negative pressure sensor; 2: filter assembly; 21: gas channel; 22: main unit; 3: control assembly; 4: bracket; 5: aluminum shell. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0028] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0029] Figure 1 Schematic diagram of an ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell 5 according to an embodiment of the present application; Figure 2 is a cross-sectional view of a dust removal assembly 1 according to an embodiment of the present application; Figure 3 is a schematic diagram of an ultrasonic generating device 13 according to an embodiment of the present application; Figure 4is a schematic diagram of an ultrasonic dust removal device including a bracket 4 according to an embodiment of the present application; Figure 5 It is a schematic diagram of an ultrasonic dust removal device including a bracket 4 and an aluminum shell 5 according to an embodiment of the present application.
[0030] The aluminum shell 5 of a lithium-ion battery secures and seals the battery. After cutting and polishing, a large amount of metal and non-metallic particles remain on its surface. If not cleaned, these falling particles can easily puncture the separator on the electrode surface. A puncture greater than 200μm will inevitably cause a short circuit, leading to Hi-pot failure and severely impacting process yield. Existing technology primarily uses positive and negative pressure blowing and suction to remove dust from the aluminum shell 5. This method is inefficient and fails to effectively remove metal and non-metallic particles, which can still affect battery performance and result in a large number of defective products.
[0031] In order to improve the above problems, the present application provides an ultrasonic dust removal device for cleaning the interior of the lithium ion aluminum shell 5, as shown in the attached Figure 1 and attached Figure 2 As shown, it includes: a dust removal component 1, a filter component 2 and a control component 3; the dust removal component 1 includes a positive pressure chamber 11, a negative pressure chamber 12 and an ultrasonic generator 13, and the ultrasonic generator 13 is installed in the positive pressure chamber 11; the filter component 2 includes a gas channel 21 and a host 22, one end of the gas channel 21 is connected to the dust removal component 1, and the other end is connected to the host 22; the host 22 is electrically connected to the control component 3.
[0032] The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell 5 in this embodiment includes a dust removal assembly 1, a filter assembly 2, and a control assembly 3. The aluminum shell 5 to be dusted forms a sealed space with the dust removal assembly 1, which is 2-10 mm from the top inner wall of the aluminum shell 5. An ultrasonic generator 13 within a positive pressure chamber 11 generates ultrasonic waves, which, along with the clean air in the positive pressure chamber 11, deliver high-frequency oscillating wind into the aluminum shell 5, causing the aluminum shell 5 to form a sensor resonance. The ultrasonic waves destroy the viscous layer between the surface of the aluminum shell 5 and the air, causing the surface of the material to vibrate, loosening the dust and causing it to fall off. The fallen dust is then drawn into the negative pressure chamber 12 by the suction force generated by the negative pressure chamber 12, and then enters the main unit 22 through the gas channel 21 connected to the dust removal assembly 1 for filtration.
[0033] The positive pressure chamber 11 in this embodiment mainly serves to replenish 14-25Kpa of clean gas into the aluminum shell 5, maintain the pressure in the enclosed space, and prevent the aluminum shell 5 from deforming under the action of negative pressure. The host 22 has 2-stage positive pressure filtration and 3-stage negative pressure filtration, both of which are in series. The power of the dust collector is 2210KW for a single host. The host 22 is connected to the dust removal component 1 through the gas channel 21, providing positive pressure clean gas to the positive pressure chamber 11 and negative pressure to the negative pressure chamber 12, which can generate sufficient suction without causing the aluminum shell 5 to be deformed by pressure. The control component 3 is a PLC, which is used to execute the dust removal program, control the host 22, and realize process control and monitoring. It can realize remote and local control, and can display relevant data and indicators on the panel of the dust removal host 22, which is convenient for operators to monitor and control in real time.
[0034] This application adds an ultrasonic generator 13 to the positive and negative pressure dust removal device. The ultrasonic wave generated by the ultrasonic generator 13 acts on the aluminum shell 5, causing the aluminum shell 5 to sense resonance, eliminating the adhesion of dust particles inside the aluminum shell 5, and separating the dust particles from the internal surface of the aluminum shell 5 by three motion modes (single or mixed) of pulling, rolling, and sliding. Combined with the vacuum suction generated by the negative pressure chamber 12, the detached dust is sucked away. By removing the metal and non-metallic particles on the internal surface of the aluminum shell 5 through the resonance of the aluminum shell 5, the dust removal efficiency is significantly improved compared to the traditional method of relying solely on positive and negative pressure blowing and suction to remove dust, thereby improving product quality, reducing costs, and improving the process efficiency.
[0035] In addition, if Figure 2 As shown, in some optional embodiments, the positive pressure chamber 11 is located at the center of the dust removal assembly 1, and the negative pressure chamber 12 surrounds the positive pressure chamber 11; the end of the dust removal assembly 1 close to the gas channel 21 is the first end, and the end away from the gas channel 21 is the second end, and the positive pressure chamber 11 and the negative pressure chamber 12 gradually shrink from the first end to the second end.
[0036] The dust removal assembly 1 is an integrated structure that is narrow at the top and wide at the bottom. The lower end is connected to the gas channel 21, and the upper end is connected to the enclosed space in the aluminum shell 5. The positive pressure chamber 11 is a cylindrical space located in the center of the dust removal assembly 1. The outer wall of the positive pressure chamber 11 is the inner wall of the negative pressure chamber 12, and the negative pressure chamber 12 surrounds the positive pressure chamber 11. Since the negative pressure chamber 12 is located outside the dust removal assembly 1, the contact surface with the enclosed space in the aluminum shell 5 is larger, and the metal and non-metal particles that fall off in the enclosed space can be more fully and effectively adsorbed. In actual operation, multiple dust removal assemblies 1 can be installed according to the size of the aluminum shell 5 that needs to be dusted to perform dust removal work at the same time.
[0037] In addition, in some optional embodiments, the gas channel 21 includes a positive pressure gas channel, a negative pressure gas channel and a line channel, the positive pressure gas channel is connected to the positive pressure chamber 11, the negative pressure gas channel is connected to the negative pressure chamber 12, and the line channel is electrically connected to the ultrasonic generating device 13.
[0038] The host 22 supplies positive pressure gas and provides negative pressure suction to the dust removal component 1, and powers the ultrasonic generator 13 in the dust removal component 1. The power supply line can be wrapped in the rubber on the outer edge of the gas channel 21, and the two ends of the gas channel 21 are respectively connected to the dust removal component 1 and the host 22.
[0039] In addition, if Figure 2 As shown, in some optional embodiments, the positive pressure chamber 11 includes a first through hole 111 and a second through hole 112, the first through hole 111 is connected to the positive pressure gas channel, and the second through hole 112 is used to output positive pressure gas; the negative pressure chamber 12 includes a third through hole 121 and a fourth through hole 122, the third through hole 121 is connected to the negative pressure gas channel, and the fourth through hole 122 is used to absorb particles falling off the surface of the aluminum shell 5; the pressure of the positive pressure chamber 11 is greater than the pressure of the negative pressure chamber 12.
[0040] The positive-pressure gas channel provides clean, positive-pressure air to dust removal assembly 1. This air is blown into positive-pressure chamber 11 through first through-hole 111, generating a gust of wind in conjunction with ultrasonic vibrations. This wind then enters aluminum shell 5 through second through-hole 112. The negative-pressure gas channel creates negative pressure in negative-pressure chamber 12. Metal and non-metallic particles released by ultrasonic resonance from aluminum shell 5 are drawn into negative-pressure chamber 12 through fourth through-hole 122, then expelled through third through-hole 121 to the negative-pressure gas channel, where they are then fed into main unit 22 for filtration. The pressure in positive-pressure chamber 11 can be set to 1.2 times that of negative-pressure chamber 12, ensuring sufficient suction without compressing and deforming aluminum shell 5.
[0041] In addition, in some optional embodiments, the fourth through hole 122 is located on the second end surface and side wall of the dust removal assembly 1, and the metal and non-metallic particles falling off the surface of the aluminum shell 5 enter the negative pressure chamber 12 through the fourth through hole 122.
[0042] In this embodiment, the fourth through hole 122 for absorbing particles falling off the surface of the aluminum shell 5 can be located at the top of the dust removal component 1 or at the side wall of the dust removal component 1 to increase the adsorption area, thereby absorbing dust particles falling off the top and the inner walls of the aluminum shell 5 to achieve a better cleaning effect.
[0043] In addition, if Figure 2 and Figure 3 As shown, in some optional embodiments, the ultrasonic generating device 13 includes an ultrasonic generator 131, a transducer 132 and an amplitude modulator 133, which are installed on the inner wall of the positive pressure chamber 11, the ultrasonic generator 131 is close to the first through hole 111, and the transducer 132 is installed between the ultrasonic generator 131 and the amplitude modulator 133; the amplitude modulator 133 is close to the second through hole 112.
[0044] The ultrasonic generator 131 converts industrial-frequency alternating current into ultrasonic-frequency oscillations with a certain power output, transferring energy and stimulating vibrations in objects. The transducer 132 is the core component of ultrasonic equipment. Its primary function is to convert input electrical power into mechanical power (i.e., ultrasonic waves) and then transmit it, while consuming very little power itself. It utilizes the piezoelectric effect of piezoelectric materials to convert electrical energy into mechanical vibrations, thereby generating ultrasonic waves. The amplitude modulator 133 is a circuit that changes according to the modulation signal and is used to increase the amplitude of the ultrasonic waves.
[0045] In addition, if Figure 4 and Figure 5 As shown, in some optional embodiments, a bracket 4 is further included; the dust removal component 1 is installed at the bottom of the bracket 4, and the aluminum shell 5 is buckled on the bracket 4 to form a closed space.
[0046] The size of the bracket 4 matches that of the aluminum shell 5, and different brackets 4 can be manufactured to adapt to aluminum shells 5 of different sizes. At least one dust removal component 1 is extended from the bottom of the bracket 4. The bracket 4 and the aluminum shell 5 surround each other to form a closed space for the dust removal device to work.
[0047] In addition, in some optional embodiments, a fifth through hole is provided at the bottom of the bracket 4, and the dust removal assembly 1 further includes a negative pressure dust removal channel 14, one end of the negative pressure dust removal channel 14 is connected to the fifth through hole, and the other end is connected to the gas channel 21.
[0048] The negative pressure dust removal channel 14 connected to the bottom of the bracket 4 can absorb the dust particles at the bottom of the bracket 4, preventing the metal and non-metallic particles falling off from the surface of the aluminum shell 5 from falling to the bottom of the bracket 4 under the action of gravity, and gathering in the dead corners where the dust removal component 1 cannot reach, thereby achieving a better dust removal effect.
[0049] In addition, in some optional embodiments, the dust removal component 1 also includes a negative pressure sensor 15, which is installed in the negative pressure chamber 12 and electrically connected to the control component 3 for monitoring pressure changes in the negative pressure chamber 12.
[0050] Furthermore, a negative pressure sensor 15 can also be installed in the negative pressure dust removal channel 14 connected to the negative pressure gas channel and the bottom of the bracket 4 to monitor the pressure changes in each pipeline and promptly adjust the operation of the dust removal system to ensure that the negative pressure flow rate fluctuates within a certain range. The monitoring data is transmitted to the control component 3 in real time. The PLC reads the sensor data, executes the program, and controls the dust removal host 22 and the negative pressure sensor 15 to realize the control and monitoring of the process, which can achieve remote and local control.
[0051] In addition, in some optional embodiments, the frequency of the oscillating wind generated by the dust removal component 1 is 25-27 KHz, and the dust removal wind speed is 50-70 m / s.
[0052] Combined with two groups of experimental cases, the dust removal performance of the ultrasonic dust removal device disclosed in the present invention for cleaning the interior of the lithium-ion aluminum shell 5 was tested.
[0053] Case 1:
[0054] Control group: Use positive and negative pressure blowing and suction to remove metal and non-metal particles inside the aluminum shell;
[0055] Experimental group: Ultrasonic dust removal combined with positive and negative pressure blowing and suction were used to remove metal and non-metallic particles inside the aluminum shell;
[0056] The metal and non-metal particles inside the aluminum shell were collected using a foreign matter collection box. The size and number of the metal and non-metal particles were measured using a JOMESA cleanliness tester and the two dust removal effects were compared.
[0057]
[0058] As shown in the table above, the number of particles inside the aluminum shell in the experimental group was far lower than in the control group, demonstrating a significant improvement in dust removal. The combination of ultrasonic waves and positive and negative pressure blowing and suction effectively removes dust particles from the aluminum shell's surface.
[0059] Case 2:
[0060] Control group: 500 batteries were produced by using a positive and negative pressure blowing-suction method to remove metal and non-metal particles inside the aluminum shell.
[0061] Experimental group: Ultrasonic dust removal combined with positive and negative pressure blowing and suction were used to remove metal and non-metallic particles from the aluminum shell to produce 500 batteries.
[0062] Before injecting the electrolyte, a Hi-pot high-voltage test is performed. Use an insulation tester to apply high DC voltage (about 200V) and measure the resistance between the positive and negative poles of the battery cell. If it is less than the set threshold, it is judged as unqualified. This method can detect defective battery cells caused by short circuits or micro-short circuits due to metal and non-metallic particles.
[0063]
[0064] As shown in the table above, the experimental group of batteries manufactured using aluminum casings treated with the dust removal device disclosed in this application demonstrated a higher pass rate in the Hi-pot high-voltage test, with significantly fewer defective batteries than the control group. By more thoroughly cleaning dust particles from the aluminum casing surface, defective batteries caused by short circuits or micro-short circuits due to metal and non-metallic particles can be reduced, improving product quality, reducing costs, and increasing process quality.
[0065] The present invention provides an ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell, comprising: a dust removal component, a filter component, and a control component; the dust removal component comprises a positive pressure chamber, a negative pressure chamber, and an ultrasonic generator, the ultrasonic generator being installed within the positive pressure chamber; the filter component comprises a gas channel and a main unit, one end of the gas channel being connected to the dust removal component and the other end being connected to the main unit; the main unit being electrically connected to the control component. The ultrasonic wave generated by the ultrasonic generator acts on the aluminum shell, causing the aluminum shell to resonate, eliminating the adhesion of dust particles within the aluminum shell. The device separates dust particles from the internal surface of the aluminum shell through three motion modes (single or mixed): pulling, rolling, and sliding. Combined with the vacuum suction generated by the negative pressure chamber, the device removes the detached dust, effectively removing metal and non-metal particles within the aluminum shell.
[0066] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.
[0067] Although alternative embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including alternative embodiments and all changes and modifications that fall within the scope of the present invention.
[0068] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity from another, and do not necessarily require or imply any actual relationship or order between these entities. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that an article or terminal device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the article or terminal device comprising the element.
[0069] The above is a detailed introduction to the technical solution provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. At the same time, for those skilled in the art, according to the principles and implementation methods of the present application, there may be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present application.
Claims
1. An ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell, characterized in that: include: Dust removal components, filtration components, and control components; The dust removal assembly includes a positive pressure chamber, a negative pressure chamber and an ultrasonic generating device, and the ultrasonic generating device is installed in the positive pressure chamber; The filter assembly includes a gas channel and a host, one end of the gas channel is connected to the dust removal assembly, and the other end is connected to the host; the host is electrically connected to the control assembly.
2. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 1, characterized in that: The positive pressure chamber is located at the center of the dust removal assembly, and the negative pressure chamber surrounds the positive pressure chamber; the end of the dust removal assembly close to the gas channel is the first end, and the end away from the gas channel is the second end, and the positive pressure chamber and the negative pressure chamber gradually shrink from the first end to the second end.
3. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 2, characterized in that: The gas channel includes a positive pressure gas channel, a negative pressure gas channel and a line channel. The positive pressure gas channel is connected to the positive pressure chamber, the negative pressure gas channel is connected to the negative pressure chamber, and the line channel is electrically connected to the ultrasonic generating device.
4. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 3, characterized in that: The positive-pressure chamber includes a first through hole and a second through hole, the first through hole is connected to the positive-pressure gas channel, and the second through hole is used to output positive-pressure gas; the negative-pressure chamber includes a third through hole and a fourth through hole, the third through hole is connected to the negative-pressure gas channel, and the fourth through hole is used to absorb particles falling off the surface of the aluminum shell; the pressure of the positive-pressure chamber is greater than the pressure of the negative-pressure chamber.
5. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 4, characterized in that: The fourth through hole is located on the second end surface and the side wall of the dust removal assembly, and the metal and non-metallic particles that fall off the surface of the aluminum shell enter the negative pressure chamber through the fourth through hole.
6. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 4, characterized in that: The ultrasonic generating device includes an ultrasonic generator, a transducer and an amplitude modulator, which are installed on the inner wall of the positive pressure chamber. The ultrasonic generator is close to the first through hole, and the transducer is installed between the ultrasonic generator and the amplitude modulator; the amplitude modulator is close to the second through hole.
7. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 1, characterized in that: It also includes brackets; The dust removal component is installed at the bottom of the bracket, and the aluminum shell is buckled on the bracket to form a closed space.
8. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 7, characterized in that: A fifth through hole is provided at the bottom of the bracket, and the dust removal assembly further includes a negative pressure dust removal channel, one end of the negative pressure dust removal channel is connected to the fifth through hole, and the other end is connected to the gas channel.
9. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 1, characterized in that: The dust removal component also includes a negative pressure sensor, which is installed in the negative pressure chamber and electrically connected to the control component for monitoring pressure changes in the negative pressure chamber.
10. The ultrasonic dust removal device for cleaning the interior of a lithium-ion aluminum shell according to claim 1, characterized in that: The frequency of the oscillating wind generated by the dust removal component is 25-27KHz, and the dust removal wind speed is 50-70m / s.