Sodium ion soft package battery tab laser cleaning device

Abstract

The utility model discloses a sodium ion soft package battery tab laser cleaning device which comprises a device cabinet body top cover, a device cabinet body cleaning area, a device cabinet body control cabinet, a device driving component and a battery cleaning tool. The device cabinet body control cabinet controls a laser cleaning device, and the device driving component fixes a sodium battery soft package battery tab. The battery cleaning tool controls the laser generator to perform laser cleaning on the sodium-battery soft-package battery tab, and the device driving component and the battery cleaning tool cooperate with each other to complete cleaning of the sodium-battery soft-package battery tab, so that the cleaning efficiency and quality of the sodium-battery soft-package battery tab can be improved, no residual impurities on the surface of the tab are ensured, the battery performance is optimized, and the product quality is improved. The surface of the battery cell tab is clean and free of attachments, the tab welding quality is improved, and the quality of a battery system is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and more specifically, to a laser cleaning device for the tabs of sodium-ion soft-pack batteries. Background Art

[0002] With the rapid development of modern technology, energy and environmental issues have become the focus of people's attention. Subsequently, the new energy industry has flourished, and products such as mobile phones, laptops, electric vehicles, and power tools have higher and higher requirements for battery performance, safety, etc. Sodium-ion batteries, as rechargeable batteries with more advantages in terms of energy density, cycle life, safety and stability, have attracted much attention.

[0003] In the structure of sodium batteries, the tabs are metal conductors that lead the positive and negative electrodes out of the battery cell. Usually, aluminum materials are used for both the positive and negative electrodes. They are the contact points during the charging and discharging of sodium batteries. In the sodium battery structure, one end of the tab is connected to the external circuit, and the other end is connected to the inside of the battery. However, the tab material is prone to form a passivation layer on the surface after being exposed to air for a long time; especially for small-scale processing and production such as R & D departments and pilot lines, during the liquid injection process of the battery manufacturing process, it will cause the tabs of soft-pack batteries to be soiled and corroded to a certain extent. The characteristics of the soft-pack tabs not only result in poor conductivity at the nodes, increasing battery capacity loss and heat generation, etc., but also affect the subsequent soldering process. The surface passivation layer will reduce the welding quality of the tabs, thereby affecting the charging and discharging performance of the battery and causing certain safety hazards.

[0004] Therefore, to obtain tabs with good weldability and high solder joint quality and avoid welding defects such as false soldering during welding, it is necessary to remove the passivation layer and dirt on the surface of the tab material. Currently, the commonly used methods to solve the passivation of the tab surface mainly include chemical methods, mechanical grinding, plating methods, plasma, etc. Among them, the chemical treatment process is complex, prone to environmental pollution, causing product damage, uneven cleaning, and extremely high consumable costs; and the problem that the positive and negative electrodes are easily conducted during plasma cleaning has not been perfectly solved. It is very necessary to solve the technical problems of the existing treatment methods, such as complex processes, environmental pollution, high costs, and insufficient safety. Summary of the Utility Model

[0005] The purpose of the present application is to provide a laser cleaning device for the tabs of sodium-ion soft-pack batteries to overcome the existing technical defects. The device driving components and the battery cleaning tooling cooperate to complete the cleaning of the tabs of sodium-ion soft-pack batteries, which can improve the cleaning efficiency and quality of the tabs of sodium-ion soft-pack batteries and ensure that there are no residual impurities on the tab surface.

[0006] The purpose of the present application is achieved through the following technical solutions:

[0007] In a first aspect, the present application provides a laser cleaning device for the tabs of a sodium-ion soft-pack battery. The laser cleaning device includes a top cover of the device cabinet, a cleaning area of the device cabinet, a control cabinet of the device cabinet, a device driving component, and a battery cleaning tooling.

[0008] The top cover of the device cabinet is located at the upper part of the laser cleaning device. The cleaning area of the device cabinet houses the device driving component and the battery cleaning tooling. The control cabinet of the device cabinet is located at the lower part of the laser cleaning device and is used to control the laser cleaning device.

[0009] The device driving component includes a driving component bottom plate, a second pneumatic element, a soft wire groove, a belt assembly, a belt, a driving arm, a slider lifting assembly, a robotic arm, and a laser generator.

[0010] The soft wire groove is arranged under the driving component bottom plate. The driving component bottom plate is respectively connected to the second pneumatic element and the belt assembly. The belt is wound around the belt assembly. Two driving arms are arranged on the belt assembly. The driving arm is connected to the slider lifting assembly. The slider lifting assembly is connected to the robotic arm. A laser generator is arranged at the end of the robotic arm.

[0011] In a possible implementation, the battery cleaning tooling includes a battery bottom plate, a first pneumatic element, a battery clamping plate, a support plate, side baffles, and a rotary cylinder. The side baffles are arranged on both sides of the top end of the battery bottom plate. The battery clamping plate is arranged at the center of the top end of the battery bottom plate and has a gap with the battery bottom plate. The first pneumatic element connected to the battery clamping plate is arranged at the front end of the support plate, and the rotary cylinder is arranged at the rear end.

[0012] In a possible implementation, a dust collector is further arranged at the end of the robotic arm to remove dust on the tabs.

[0013] In a possible implementation, the laser cleaning device further includes a focusing lens arranged under the laser generator.

[0014] In a possible implementation, the distance between the focusing lens and the battery tab to be cleaned is 50 mm - 120 mm.

[0015] In a possible implementation, the output wavelength of the laser generator is 900 - 1300 nm.

[0016] In a possible implementation, the average output power of the laser generator is 50 - 80 W.

[0017] In a possible implementation, the pulse frequency of the laser generator is 120 - 210 KHz.

[0018] In a possible implementation, the voltage of the laser generator is set to 4.0 V - 5.5 V.

[0019] In a possible implementation, the duration of the laser generator is 1.5 - 2.0 s.

[0020] The main solution of the present application and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in the present application; and in the present application, (each non-conflicting alternative) alternatives and other alternatives can also be freely combined. Those skilled in the art can understand that there are various combinations according to the prior art and common general knowledge after understanding the solution of the present application, all of which are the technical solutions to be protected by the present application, and will not be enumerated here.

[0021] The present application discloses a laser cleaning device for sodium-ion soft-pack battery tabs. The device includes a top cover of the device cabinet, a cleaning area of the device cabinet, a control cabinet of the device cabinet, a device driving component, and a battery cleaning tooling. The control cabinet of the device cabinet controls the laser cleaning device. The device driving component fixes the tabs of the sodium-ion soft-pack battery. The battery cleaning tooling controls the laser generator to perform laser cleaning on the tabs of the sodium-ion soft-pack battery. The device driving component and the battery cleaning tooling cooperate with each other to complete the cleaning of the tabs of the sodium-ion soft-pack battery, which can improve the cleaning efficiency and quality of the tabs of the sodium-ion soft-pack battery, ensure that there are no residual impurities on the tab surface, optimize the battery performance, make the surface of the tab of the battery cell clean without attachments, improve the welding quality of the tabs, and further improve the quality of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 FIG. 1 shows a schematic structural diagram of a laser cleaning device for sodium-ion soft-pack battery tabs proposed by an embodiment of the present application.

[0024] Figure 2 FIG. 2 shows a schematic structural diagram of the device driving component proposed by an embodiment of the present application.

[0025] Figure 3 FIG. 3 shows a schematic structural diagram of the battery cleaning tooling proposed by an embodiment of the present application.

[0026] Icons: 1 - Top cover of the device cabinet; 2 - Cleaning area of the device cabinet; 3 - Control cabinet of the device cabinet; 4 - Device drive component; 5 - Battery cleaning tooling; 41 - Drive component base plate; 42 - Second pneumatic component; 43 - Soft wire groove; 44 - Belt assembly; 45 - Belt; 46 - Drive arm; 47 - Slide block lifting assembly; 48 - Robot arm; 51 - Battery base plate; 52 - First pneumatic component; 53 - Battery clamping plate; 54 - Support plate; 55 - Side baffle; 56 - Rotary cylinder. Detailed implementation manners

[0027] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.

[0029] In the prior art, the conventional cleaning method cannot effectively and thoroughly clean the stains on the battery surface, resulting in poor welding quality of the battery tabs and the inability to guarantee the battery performance.

[0030] Common methods for solving the passivation of the tab surface mainly include chemical methods, mechanical grinding, plating methods, plasma, etc. Among them, the chemical treatment process is complex, easy to cause environmental pollution, product damage, uneven cleaning, and extremely high consumable costs; and the problem that the positive and negative electrodes are easily conducted during plasma cleaning has not been perfectly solved. Therefore, the conventional cleaning method cannot effectively and thoroughly clean the stains on the battery surface, resulting in poor welding quality of the battery tabs and the inability to guarantee the battery performance. It is very necessary to solve the technical problems of complex processing methods, environmental pollution, high cost, and insufficient safety in the prior art.

[0031] To solve the above problems, the embodiment of the present application proposes a laser cleaning device for sodium-ion soft-pack battery tabs. The laser cleaning method can achieve excellent cleaning effects, no damage to the tab surface, good welding effect of the battery tabs, and full guarantee of the battery performance. Next, a detailed description will be given.

[0032] Please refer to Figure 1 , Figure 1The structural schematic diagram of a laser cleaning device for the tabs of a sodium-ion soft-pack battery proposed by an embodiment of the present application is shown. This laser cleaning device includes a device cabinet top cover 1, a device cabinet cleaning area 2, a device cabinet control cabinet 3, a device driving component 4, and a battery cleaning tooling 5;

[0033] The device cabinet top cover 1 is located at the upper part of the laser cleaning device. The device cabinet cleaning area 2 houses the device driving component 4 and the battery cleaning tooling 5. The device cabinet control cabinet 3 is located at the lower part of the laser cleaning device and is used to control the laser cleaning device.

[0034] The device cabinet top cover 1 is located at the top of the entire laser cleaning device, playing a role in protecting the internal structure and assisting in heat dissipation. The device cabinet cleaning area 2 is located in the middle and serves as the core area for cleaning operations, responsible for carrying and stabilizing the device driving component 4 and the battery cleaning tooling 5. The battery cleaning tooling 5 will accurately position and fix the battery to be cleaned so that the laser can accurately act on the tab part. The device driving component 4 is a key component that moves or rotates the battery tooling during the cleaning process, ensuring the comprehensiveness and consistency of the cleaning. The device cabinet control cabinet 3 is placed at the lower part of the device, with a built-in control system for receiving and processing commands and automatically controlling the entire cleaning process, including the laser emission intensity, cleaning path setting, etc., to achieve an efficient and accurate cleaning effect.

[0035] Through the integrated layout, the efficient and automatic cleaning of the tabs of the sodium-ion soft-pack battery is realized, improving the production efficiency and the quality reliability of the battery products.

[0036] Based on Figure 1 Please refer to Figure 2 , Figure 2 The structural schematic diagram of the device driving component proposed by an embodiment of the present application is shown. The device driving component 4 includes a driving component bottom plate 41, a second pneumatic component 42, a soft wire groove 43, a belt assembly 44, a belt 45, a driving arm 46, a slider lifting component 47, a robotic arm 48, and a laser generator;

[0037] The soft wire groove 43 is arranged under the driving component bottom plate 41. The driving component bottom plate 41 is respectively connected to the second pneumatic component 42 and the belt assembly 44. The belt 45 is wound around the belt assembly 44. Two driving arms 46 are arranged on the belt assembly 44. The driving arm 46 is connected to the slider lifting component 47. The slider lifting component 47 is connected to the robotic arm 48. A laser generator is arranged at the end of the robotic arm 48.

[0038] The driving component base plate 41 serves as a basic support structure, fixing and connecting other components. The second pneumatic component 42 provides a power source for driving the belt component 44 to drive the belt to move, causing the driving arm 46 to horizontally displace. The soft wire groove 43 is used to organize and protect the wires, air pipes and other lines for control, preventing them from being damaged during the movement of the components. The belt component 44 is connected to the driving arm 46 through the belt, transmitting power to make the driving arm 46 move horizontally. The belt, as the actual transmission medium, is wound around the pulley, and its movement drives the driving arm 46. The driving arm 46 directly receives the power transmitted by the belt and performs reciprocating or rotational movements, etc.

[0039] The slider lifting component 47 is connected to the driving arm 46, and its lifting is controlled by the movement of the driving arm 46, increasing the flexibility of the device in space and the cleaning range. The robotic arm 48 connected to the slider lifting component 47 can move back and forth. Through the movements of the driving arm 46, the slider lifting component 47 and the robotic arm 48, the laser generator set at the end is aligned with the battery to be cleaned, realizing precise control of the position of the tooling or the cleaning head during the battery cleaning process, and ensuring the cleaning effect.

[0040] The output wavelength of the laser generator is 900 - 1300 nm, the average output power is 50 - 80 W, the pulse frequency is 120 - 210 KHz, the voltage is set to 4.0 V - 5.5 V, and the duration is 1.5 - 2.0 s.

[0041] In a possible implementation, the laser cleaning device further includes a focusing lens disposed under the laser generator, and the distance between the focusing lens and the battery tab to be cleaned is 50 mm - 120 mm.

[0042] By disposing a focusing lens under the laser generator, the focusing lens is located between the laser generator and the battery tab to be cleaned, and its distance is carefully controlled within the range of 50 mm to 120 mm, allowing the laser beam to be precisely focused before reaching the tab surface, ensuring energy concentration, effectively removing the stains or oxide layers on the tab surface, and at the same time reducing the damage to the surrounding materials.

[0043] Based on Figure 1 Please refer to Figure 3 , Figure 3 FIG. shows a schematic structural diagram of the battery cleaning tooling proposed in the embodiment of the present application. The battery cleaning tooling 5 includes a battery base plate 51, a first pneumatic component 52, a battery clamp 53, a support plate 54, side baffles 55, and a rotary cylinder 56. The side baffles 55 are disposed on both sides of the top of the battery base plate 51. The battery clamp 53 is disposed at the center of the top of the battery base plate 51 and has a gap with the battery base plate 51. The first pneumatic component 52 connected to the battery clamp 53 is disposed at the front end of the support plate 54, and the rotary cylinder 56 is disposed at the rear end.

[0044] The support plate 54 serves as the basic framework of the battery cleaning tooling 5, providing a stable installation platform. The first pneumatic component 52 cooperates with the battery clamping plate 53 to firmly fix the battery to be cleaned through air pressure control, ensuring that the battery position remains unchanged during the cleaning process.

[0045] The battery clamping plate 53 presents an "I" shape, and the notches on both sides can expose the ear tabs of the battery to be detected. The first pneumatic component 52 is connected to the center of the battery clamping plate 53. By collaborating the battery clamping plate 53 with the first pneumatic component 52, it can be adjusted to adapt to batteries of different sizes and ensure that the ear tabs remain parallel to the rotation axis, optimizing the cleaning effect.

[0046] The battery bottom plate 51 is in direct contact with the bottom of the battery, related to battery support and positioning, and is equipped with an anti-slip or shock-absorbing design. The rotary cylinder 56 is responsible for driving the clamping and positioning assembly to rotate, so that the ear tabs can be comprehensively processed during the cleaning process, and both sides can be effectively cleaned. The adjustable side baffle 55 is arranged between the battery bottom plate 51 and the battery side, used for accurately positioning the battery, preventing the battery from shifting or falling during rotation, and at the same time allowing adjustment according to the battery size, increasing the versatility and flexibility of the tooling.

[0047] In a possible implementation manner, a dust collector is further provided at the end of the robotic arm 48 for removing dust on the ear tabs.

[0048] The dust collector is directly connected to the ear tabs of the battery to be cleaned, which improves the function of the laser cleaning device. The deployment of the dust collector is aimed at immediately removing the tiny dust that may remain on the surface of the ear tabs after the cleaning process, ensuring the cleanliness of the ear tabs.

[0049] Next, the cleaning steps of the laser cleaning device for the ear tabs of the sodium-ion soft-pack battery proposed in the embodiments of the present application are described:

[0050] The first step, installing the battery: First, accurately install the soft-pack battery onto the new cleaning tooling. This step ensures that the battery is properly placed and prepares for the subsequent cleaning.

[0051] The second step, using the pneumatic components and the clamping and positioning components of the new tooling to firmly fix the battery to prevent any deviation during the cleaning process and ensure the accuracy of the cleaning.

[0052] The third step, then turn on the laser generator to ensure that the ear tabs of the battery to be cleaned are within the effective irradiation range of the laser beam. This link prepares for the subsequent precise cleaning operation.

[0053] Step 4, Parameter Setting: According to the previously verified optimal parameters, adjust the distance between the focusing lens and the tab to the range of 50 mm - 120 mm, set the output wavelength of the laser generator between 900 and 1300 nm, control the average output power at 50 to 80 W, and set the pulse frequency in the range of 120 to 210 KHz. In addition, for tabs with different pollution levels, the laser power can be adjusted between 4.0 V and 5.5 V, and the irradiation duration can be flexibly set between 1.5 and 2.0 seconds according to the laser power intensity and the actual pollution situation.

[0054] Step 5, After all the parameters are set properly, start the cleaning equipment. At this time, the laser starts to act on the surface of the tab. Meanwhile, the new rotary cylinder is activated to drive the pressure battery fixture to rotate slowly. This delicate design enables both sides of the tab to receive comprehensive laser cleaning, ensuring that every part is thoroughly processed.

[0055] Compared with the prior art, the laser cleaning adopted in this application has the characteristics of non-contact laser, non-destructive, high cleaning efficiency, only requires power supply, high cleanliness, precise controllability, high precision, pollution-free, simple operation, no consumables, low maintenance cost, easy integration, automation, etc.

[0056] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A sodium ion soft-pack battery tab laser cleaning device, characterized in that: The laser cleaning device includes a device cabinet top cover, a device cabinet cleaning area, a device cabinet control cabinet, a device drive component, and a battery cleaning tool; The top cover of the device cabinet is located at the upper part of the laser cleaning device, the cleaning area of ​​the device cabinet carries the device driving components and the battery cleaning tooling, and the device cabinet control cabinet is located at the lower part of the laser cleaning device and is used to control the laser cleaning device; The device driving components include a driving assembly base plate, a second pneumatic element, a flexible wire trough, a belt assembly, a belt, a driving arm, a slider lifting assembly, a mechanical arm and a laser generator; The soft wire trough is arranged under the bottom plate of the driving component, the bottom plate of the driving component is respectively connected to the second pneumatic element and the belt component, the belt is wrapped around the belt component, two driving arms are arranged on the belt component, the driving arms are connected to the slider lifting component, the slider lifting component is connected to the mechanical arm, and a laser generator is arranged at the end of the mechanical arm.

2. The laser cleaning device according to claim 1, characterized in that: The battery cleaning tooling includes a battery base plate, a first pneumatic element, a battery clamp, a support plate, side baffles, and a rotary cylinder. The side baffles are arranged on both sides of the top of the battery base plate, the battery clamp is arranged at the top center of the battery base plate and leaves a gap with the battery base plate, the front end of the support plate is provided with a first pneumatic element connected to the battery clamp, and the rear end is provided with a rotary cylinder.

3. The laser cleaning device according to claim 1, characterized in that: A dust collector is also provided at the end of the mechanical arm to remove dust on the pole ear.

4. The laser cleaning device according to claim 1, characterized in that: The laser cleaning device also includes a focusing lens arranged under the laser generator.

5. The laser cleaning device according to claim 4, characterized in that: The distance between the focusing lens and the battery tab to be cleaned is 50mm-120mm.

6. The laser cleaning device according to claim 1, characterized in that: The output wavelength of the laser generator is 900-1300nm.

7. The laser cleaning device according to claim 1, characterized in that: The average output power of the laser generator is 50-80W.

8. The laser cleaning device according to claim 1, characterized in that: The pulse frequency of the laser generator is 120-210KHz.

9. The laser cleaning device according to claim 1, characterized in that: The voltage of the laser generator was set to 4.0V-5.5V.

10. The laser cleaning device according to claim 1, characterized in that: The duration of the laser generator is 1.5-2.0s.

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