Negative pressure cup cleaning device and lithium battery formation equipment

Abstract

The utility model discloses a negative pressure cup cleaning device and lithium battery formation equipment, the negative pressure cup cleaning device comprises a cleaning assembly, the cleaning assembly comprises a liquid inlet pipe, an air inlet pipe and a collecting pipe, one end of the collecting pipe is communicated with the liquid inlet pipe and the air inlet pipe, and the other end of the collecting pipe is used for being communicated with an inlet of a negative pressure cup; the liquid inlet pipe is used for introducing cleaning liquid, the gas inlet pipe is used for introducing high-pressure gas, the cleaning liquid flows into the collecting pipe through the liquid inlet pipe and then enters the negative pressure cup, the high-pressure gas is introduced into the gas inlet pipe after the cleaning liquid is introduced into the liquid inlet pipe, and the flowability and impact force of the cleaning liquid are increased through introduction of the high-pressure gas. According to the negative-pressure cup cleaning device, the cleaning liquid can cover all parts in the negative-pressure cup in a high-pressure washing mode, electrolyte crystals in a cavity of the negative-pressure cup are cleaned, the cleaning effect on the negative-pressure cup is enhanced, the cavity of the negative-pressure cup is cleaned more efficiently and comprehensively, and therefore the cleaning efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of semiconductor technology, and in particular to a negative pressure cup cleaning device and a lithium battery formation device. Background Art

[0002] During the formation process in the back-end production line of lithium batteries, some gases will be generated. Therefore, during the formation process, a negative pressure component with a negative pressure cup and a suction nozzle is used to suck and collect the gases. However, the gases adsorbed by negative pressure may be mixed with electrolyte, and the electrolyte remaining in the negative pressure cup is likely to form crystals, which may cause blockage. To solve this problem, after the formation is completed, the negative pressure cup needs to be cleaned.

[0003] The existing cleaning method generally uses a cleaning agent to circulate and flow inside the negative pressure cup cavity. The cleaning agent dissolves the electrolyte crystals inside the negative pressure cup cavity and flows out with the cleaning liquid. The cleaning is carried out by dissolution during the cleaning process, with low efficiency and poor cleaning effect. Summary of the Utility Model

[0004] The present application discloses a negative pressure cup cleaning device and a lithium battery formation device, enabling the cleaning liquid to cover all parts inside the negative pressure cup by means of high-pressure flushing, cleaning the electrolyte crystals inside the negative pressure cup cavity, and at the same time removing dirt and impurities inside the negative pressure cup, enhancing the cleaning effect on the negative pressure cup, cleaning the cavity of the negative pressure cup more efficiently and comprehensively, and thus improving the cleaning efficiency.

[0005] To achieve the above object, the present application discloses a negative pressure cup cleaning device, including:

[0006] A cleaning component, the cleaning component includes a liquid inlet pipe, a gas inlet pipe and a confluence pipe. One end of the confluence pipe is connected to the liquid inlet pipe and the gas inlet pipe, and the other end of the confluence pipe is used to be connected to the inlet of the negative pressure cup. The liquid inlet pipe is used to introduce the cleaning liquid, and the gas inlet pipe is used to introduce high-pressure gas.

[0007] In a possible implementation manner, the cleaning component further includes a liquid storage tank. The liquid inlet pipe and the gas inlet pipe are connected to the confluence pipe through the liquid storage tank, and a first valve is provided on the confluence pipe.

[0008] In a possible implementation manner, the liquid storage tank includes a box body and a box cover provided on the top of the box body. The box body and the box cover enclose a cavity. The liquid inlet pipe and the gas inlet pipe are both connected to the box cover and communicate with the cavity, and the confluence pipe is connected to the bottom of the box body and communicates with the cavity.

[0009] In a possible implementation, the negative pressure cup cleaning device further includes a fixing frame assembly for fixing the negative pressure cup. The fixing frame assembly includes a first fixing member, on which a plurality of negative pressure cup mounting positions are arranged side by side in a first direction. The confluence pipe includes a first confluence pipe and a second confluence pipe connected to each other. The first confluence pipe is a flexible pipe connected to the liquid storage tank, and the second confluence pipe is a rigid pipe arranged along the first direction and disposed opposite to the first fixing member. A plurality of connection holes corresponding to the negative pressure cup mounting positions one by one are provided on the second confluence pipe, and the plurality of connection holes are communicated with a plurality of negative pressure cups through a plurality of connection pipes.

[0010] In a possible implementation, the first valve is provided on the first confluence pipe.

[0011] In a possible implementation, the negative pressure cup mounting positions include an adjacent first negative pressure cup mounting position and a second negative pressure cup mounting position. The connection holes include a first connection hole corresponding to the first negative pressure cup mounting position in a second direction and a second connection hole corresponding to the second negative pressure cup mounting position in the second direction. The second direction is perpendicular to the first direction. The connection pipes include a first connection pipe and a second connection pipe. The first connection pipe connects the negative pressure cup on the first negative pressure cup mounting position and the second connection hole, and the second connection pipe connects the negative pressure cup on the second negative pressure cup mounting position and the first connection hole.

[0012] In a possible implementation, the cleaning assembly further includes a guiding member for being assembled in the negative pressure cup to guide the cleaning liquid to the inner wall of the negative pressure cup.

[0013] In a possible implementation, the guiding member includes a connected mounting portion and a guiding portion. The guiding portion is located below the mounting portion and arranged at an interval from the mounting portion. The mounting portion is used for connecting with the inlet of the negative pressure cup. The guiding portion includes a conical body having a conical guiding surface. The small-diameter end of the conical guiding surface corresponds to the inlet of the negative pressure cup, and the conical guiding surface is used for guiding the cleaning liquid to flow along the conical guiding surface towards the inner wall of the negative pressure cup when the cleaning liquid reaches the conical guiding surface through the inlet of the negative pressure cup.

[0014] In a possible implementation, the guiding portion further includes a plurality of guiding strips provided on the conical body. The plurality of guiding strips are arranged circumferentially along the bottom side wall of the conical body. The plurality of guiding strips are inclined, and the end of the guiding strip away from the conical body is closer to the inner wall of the negative pressure cup relative to the bottom of the conical body.

[0015] In a possible implementation, a plurality of the guide strips are evenly arranged along the circumference of the bottom side wall of the conical body.

[0016] In a possible implementation, the conical body is a hollow structure that penetrates along the axial direction of the conical body.

[0017] In one possible implementation, the mounting portion includes an assembly tube body, which is used to extend from the inside of the cover of the negative pressure cup into the inlet of the negative pressure cup and connect with the inlet of the negative pressure cup. The assembly tube body is provided with an outer protrusion section, which is used to cooperate with the surface stopper of the inside of the cover of the negative pressure cup facing the flow guide member.

[0018] In a possible implementation, the guide member further includes a plurality of connecting members arranged at intervals along the circumferential direction of the side wall of the conical body, and the plurality of connecting members connect the mounting portion and the guide portion.

[0019] In one possible implementation, the negative pressure cup cleaning device further includes a recovery component, the recovery component includes a liquid receiving tank, the liquid receiving tank is arranged below the first fixing member, and the notch of the liquid receiving tank corresponds to the plurality of negative pressure cup mounting positions.

[0020] In one possible implementation, the negative pressure cup cleaning device further includes a driving mechanism, the liquid receiving trough is transmission-connected to the driving mechanism, and the driving mechanism can drive the liquid receiving trough to move in a vertical direction so that the liquid receiving trough approaches or moves away from the negative pressure cup.

[0021] In a possible implementation, a drain pipe is provided at the bottom of the liquid receiving tank.

[0022] In a possible implementation, the cleaning components include multiple groups, and the multiple groups of cleaning components are arranged in parallel along the second direction.

[0023] The present application also discloses a lithium battery formation device, comprising any one of the negative pressure cup cleaning devices described above.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] In the negative pressure cup cleaning device provided by the present application, the cleaning assembly includes a liquid inlet pipe, a gas inlet pipe, and a confluence pipe. One end of the confluence pipe is connected to the liquid inlet pipe and the gas inlet pipe, and the other end of the confluence pipe is used to be connected to the inlet of the negative pressure cup. The cleaning liquid flows into the confluence pipe through the liquid inlet pipe and then enters the negative pressure cup. After the cleaning liquid is introduced through the liquid inlet pipe, the high-pressure gas is introduced through the gas inlet pipe. The high-pressure gas can play a role in promoting the flow of the cleaning liquid. The introduction of the high-pressure gas increases the fluidity and impact force of the cleaning liquid, enabling the cleaning liquid to cover various parts inside the negative pressure cup by means of high-pressure flushing, cleaning the electrolyte crystals in the cavity of the negative pressure cup, removing dirt and impurities in the negative pressure cup at the same time, enhancing the cleaning effect on the negative pressure cup, and cleaning the cavity of the negative pressure cup more efficiently and comprehensively, thereby improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 Structural schematic diagram of a negative pressure cup cleaning device provided by an embodiment of the present utility model;

[0028] Figure 2 For Figure 1 Structural schematic diagram of the A-A perspective;

[0029] Figure 3 Structural schematic diagram of a negative pressure cup cleaning device provided by an embodiment of the present utility model showing the confluence pipe;

[0030] Figure 4 Structural schematic diagram of a negative pressure cup cleaning device provided by an embodiment of the present utility model showing the connecting pipe;

[0031] Figure 5 For Figure 4 Partial enlarged view at P;

[0032] Figure 6 Structural schematic diagram of a negative pressure cup cleaned by a negative pressure cup cleaning device provided by an embodiment of the present utility model;

[0033] Figure 7 For Figure 6 Structural schematic diagram of the B-B perspective;

[0034] Figure 8 Structural schematic diagram of a flow guiding member of a negative pressure cup cleaning device provided by an embodiment of the present utility model;

[0035] Figure 9 ForFigure 8 Structural schematic diagram from the C-C perspective.

[0036] Description of reference numerals:

[0037] 10 - Fixing frame assembly; 11 - First fixing member; 111 - First negative pressure cup mounting position; 112 - Second negative pressure cup mounting position;

[0038] 20 - Cleaning assembly; 21 - Liquid inlet pipe; 22 - Air inlet pipe; 23 - Confluence pipe; 231 - First confluence pipe; 232 - Second confluence pipe; 2321 - First connection hole; 2322 - Second connection hole; 2323 - First connection pipe; 2324 - Second connection pipe; 24 - Liquid storage tank; 241 - Tank body; 242 - Tank cover; 243 - Cavity; 25 - First valve; 26 - Flow guiding member; 261 - Mounting portion; 262 - Flow guiding portion; 2621 - Conical body; 2622 - Flow guiding strip; 263 - Connecting member;

[0039] 30 - Recycling assembly; 31 - Liquid receiving tank; 311 - Drain pipe;

[0040] 40 - Negative pressure cup. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0042] In the present application, the terms "install", "set", "provided with", "connected", and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, components, or parts (the specific types and structures may be the same or different), and do not indicate or imply the relative importance and quantity of the indicated devices, components, or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] During the formation process in the back-end production line of lithium batteries, some gases will be generated. Therefore, during the formation process, a negative pressure component with a negative pressure cup and a suction nozzle is used to suck and collect the gases. However, the gases adsorbed by negative pressure may be mixed with electrolyte, and the electrolyte remaining in the negative pressure cup is likely to form crystals, which may lead to blockage. To solve this problem, after the formation is completed, the negative pressure cup needs to be cleaned.

[0045] The existing cleaning methods generally use cleaning agents to circulate and flow in the cavity of the negative pressure cup. The cleaning agent dissolves the electrolyte crystals in the cavity of the negative pressure cup and flows out with the cleaning liquid. The cleaning process uses the dissolution method for cleaning, with low efficiency and poor cleaning effect.

[0046] In view of this, some embodiments of the present application provide a negative pressure cup cleaning device and a lithium battery formation device. The cleaning liquid can cover all parts inside the negative pressure cup by means of high-pressure flushing, clean the electrolyte crystals in the cavity of the negative pressure cup, and at the same time remove the dirt and impurities in the negative pressure cup, enhancing the cleaning effect on the negative pressure cup, and cleaning the cavity of the negative pressure cup more efficiently and comprehensively, thereby improving the cleaning efficiency.

[0047] The following will illustrate the present application in detail through specific embodiments:

[0048] The negative pressure cup cleaning device of the embodiment of the present application, as Figure 1-2 shown, the negative pressure cup cleaning device includes a cleaning component 20. The cleaning component 20 includes a liquid inlet pipe 21, a gas inlet pipe 22, and a confluence pipe 23. One end of the confluence pipe 23 is connected to the liquid inlet pipe 21 and the gas inlet pipe 22, and the other end of the confluence pipe 23 is used to be connected to the inlet of the negative pressure cup 40. The liquid inlet pipe 21 is used to introduce the cleaning liquid, and the gas inlet pipe 22 is used to introduce high-pressure gas.

[0049] The negative pressure cup cleaning device provided by the embodiment of the present application, the cleaning component 20 includes a liquid inlet pipe 21, a gas inlet pipe 22, and a confluence pipe 23. One end of the confluence pipe 23 is connected to the liquid inlet pipe 21 and the gas inlet pipe 22, and the other end of the confluence pipe 23 is used to be connected to the inlet of the negative pressure cup 40. The cleaning liquid flows into the confluence pipe 23 through the liquid inlet pipe 21 and then enters the negative pressure cup 40. After the cleaning liquid is introduced through the liquid inlet pipe 21, the gas inlet pipe 22 introduces high-pressure gas. The high-pressure gas can play a role in promoting the flow of the cleaning liquid. The introduction of the high-pressure gas increases the fluidity and impact force of the cleaning liquid, enabling the cleaning liquid to cover all parts inside the negative pressure cup 40 by means of high-pressure flushing, cleaning the electrolyte crystals in the cavity of the negative pressure cup, and at the same time removing the dirt and impurities in the negative pressure cup 40, enhancing the cleaning effect on the negative pressure cup 40, and cleaning the cavity of the negative pressure cup 40 more efficiently and comprehensively, thereby improving the cleaning efficiency.

[0050] Further, as Figure 2As shown, the cleaning assembly 20 further includes a liquid storage tank 24. The liquid inlet pipe 21 and the gas inlet pipe 22 are communicated with the confluence pipe 23 through the liquid storage tank 24. A first valve 25 is provided on the confluence pipe 23. During use, the first valve 25 is closed, and the cleaning liquid is first stored in the liquid storage tank 24 through the liquid inlet pipe 21. When the liquid inlet of the liquid inlet pipe 21 stops, high-pressure gas is introduced into the gas inlet pipe 22, and the first valve 25 on the confluence pipe 23 is opened. The cleaning liquid enters the negative pressure cup 40 through the confluence pipe 23 with a larger flow rate and velocity, making the flushing effect better. And during the cleaning process, if an abnormal situation occurs, the first valve 25 can be quickly closed to stop the supply of the cleaning liquid and high-pressure gas, ensuring the safety and reliability of the cleaning process.

[0051] Specifically, the liquid storage tank 24 includes a tank body 241 and a tank cover 242 provided at the top of the tank body 241. The tank body 241 and the tank cover 242 enclose a cavity 243. The liquid inlet pipe 21 and the gas inlet pipe 22 are both connected to the tank cover 242 and communicated with the cavity 243. The confluence pipe 23 is connected to the bottom of the tank body 241 and communicated with the cavity 243. Thus, the liquid inlet pipe 21 and the gas inlet pipe 22 are connected at the tank cover 242, so that the cleaning liquid and high-pressure gas enter the cavity 243 from the top of the tank body 241, which is conducive to the rapid flow of the cleaning liquid under the action of the high-pressure gas. The confluence pipe 23 is connected to the bottom of the tank body 241, and the cleaning liquid naturally flows to the confluence pipe 23 under the action of gravity and high-pressure gas, ensuring that the cleaning liquid can smoothly enter the negative pressure cup 40 for cleaning and improving the cleaning effect. The separate design of the tank body 241 and the tank cover 242 makes it more convenient to maintain or clean the liquid storage tank 24 when needed.

[0052] The negative pressure cup cleaning device further includes a fixing frame assembly 10. The fixing frame assembly 10 is used to fix the negative pressure cup 40. The negative pressure cup 40 is installed on the fixing frame assembly 10 to ensure that the negative pressure cup 40 remains stable during the cleaning process. As Figure 3-4 shown, the fixing frame assembly 10 includes a first fixing member 11. A plurality of negative pressure cup mounting positions are arranged in parallel along a first direction on the first fixing member 11. The confluence pipe 23 includes a first confluence pipe 231 and a second confluence pipe 232 connected to each other. The first confluence pipe 231 is a flexible pipe, and the first confluence pipe 231 is connected to the liquid storage tank 24. The second confluence pipe 232 is a rigid pipe, and the second confluence pipe 232 is arranged along the first direction. The second confluence pipe 232 is arranged opposite to the first fixing member 11. A plurality of connection holes corresponding to the negative pressure cup mounting positions one by one are provided on the second confluence pipe 232. The plurality of connection holes are communicated with the plurality of negative pressure cups 40 through a plurality of connection pipes.

[0053] Multiple negative pressure cup installation positions can clean multiple negative pressure cups 40 simultaneously, greatly improving the cleaning efficiency. The first manifold 231 is a flexible pipe, which can conveniently adjust the position and angle to adapt to the installation position of the liquid storage tank 24, enhancing the operation flexibility. The second manifold 232 is a rigid pipe, arranged along the first direction and opposite to the first fixing member 11, which can ensure that multiple connection holes correspond one by one to the negative pressure cup installation positions, guaranteeing that the cleaning liquid can be accurately delivered to each negative pressure cup 40. At the same time, the arrangement of the rigid pipe ensures the connection stability and makes the entire cleaning device more orderly, facilitating management and maintenance. The multiple connection holes are connected to the multiple negative pressure cups 40 through connecting pipes, enabling each negative pressure cup 40 to have an independent cleaning channel without interference.

[0054] In this embodiment, the first valve 25 is provided on the first manifold 231. Since the first manifold 231 connects the liquid storage tank 24 and the second manifold 232, the first valve 25 provided on the first manifold 231 can more conveniently control the flow of the cleaning liquid and is also convenient for the operator to operate and monitor.

[0055] Specifically, as Figure 5 shown, to make the structure of the cleaning device more compact, the negative pressure cup installation positions include the adjacent first negative pressure cup installation position 111 and the second negative pressure cup installation position 112. The connection holes include the first connection hole 2321 corresponding to the first negative pressure cup installation position 111 in the second direction and the second connection hole 2322 corresponding to the second negative pressure cup installation position 112 in the second direction. The second direction is perpendicular to the first direction. The connecting pipes include the first connecting pipe 2323 and the second connecting pipe 2324. The first connecting pipe 2323 connects the negative pressure cup 40 on the first negative pressure cup installation position 111 and the second connection hole 2322, and the second connecting pipe 2324 connects the negative pressure cup 40 on the second negative pressure cup installation position 112 and the first connection hole 2321.

[0056] By adopting the cross-connection method between the adjacent negative pressure cup installation positions and the corresponding connection holes, multiple negative pressure cup cleaning connections can be arranged more compactly in a limited space, making the layout of the entire cleaning device more reasonable, saving the installation space. For a working environment with limited space, the number of negative pressure cups 40 that can be cleaned can be increased without increasing the floor area, improving the applicability of the cleaning device.

[0057] Furthermore, as Figure 6-9As shown, the cleaning assembly 20 further includes a flow guide member 26. The flow guide member 26 is used to be assembled inside the negative pressure cup 40 to drain the cleaning liquid to the inner wall of the negative pressure cup 40. The flow guide member 26 can accurately drain the cleaning liquid to the inner wall of the negative pressure cup 40, enabling the cleaning liquid to fully contact the inner wall of the negative pressure cup 40, effectively cleaning the inner wall of the negative pressure cup 40, and greatly improving the comprehensiveness and thoroughness of the cleaning.

[0058] In this embodiment, the flow guide member 26 includes a connected mounting portion 261 and a flow guiding portion 262. The flow guiding portion 262 is located below the mounting portion 261 and is arranged at an interval from the mounting portion 261. The mounting portion 261 is used to connect to the inlet of the negative pressure cup 40. The flow guiding portion 262 includes a conical body 2621. The conical body 2621 includes a conical flow guiding surface. The small-diameter end of the conical flow guiding surface corresponds to the inlet of the negative pressure cup 40. The conical flow guiding surface is used for the cleaning liquid to flow along the conical flow guiding surface towards the inner wall of the negative pressure cup 40 when the cleaning liquid reaches the conical flow guiding surface through the inlet of the negative pressure cup 40.

[0059] It should be noted that the mounting portion 261 is connected to the inlet of the negative pressure cup 40 to ensure the stable position of the flow guide member 26. The small-diameter end of the conical flow guiding surface corresponds to the inlet of the negative pressure cup 40, so that after the cleaning liquid enters from the inlet of the negative pressure cup 40, it flows along the conical flow guiding surface towards the inner wall of the negative pressure cup 40 along the conical flow guiding surface, ensuring that the cleaning liquid is guided in all directions towards the cup wall, and at the same time can quickly and evenly cover the entire inner wall of the negative pressure cup 40, avoiding the disorderly spraying of the cleaning liquid and further enhancing the cleaning effect.

[0060] Furthermore, the flow guiding portion 262 further includes a plurality of flow guiding strips 2622 provided on the conical body 2621. The plurality of flow guiding strips 2622 are arranged circumferentially along the bottom side wall of the conical body 2621. The plurality of flow guiding strips 2622 are inclined, and the end of the flow guiding strip 2622 away from the conical body 2621 is closer to the inner wall of the negative pressure cup 40 relative to the bottom of the conical body 2621.

[0061] It should be noted that the plurality of flow guiding strips 2622 are arranged circumferentially along the bottom side wall of the conical body 2621, which can perform more refined flow guiding after the conical flow guiding surface initially guides the cleaning liquid to flow towards the inner wall of the negative pressure cup 40, making the cleaning liquid more evenly dispersed to each position of the inner wall of the negative pressure cup 40. The flow guiding strips 2622 are inclined and the end of the flow guiding strip 2622 away from the conical body 2621 is closer to the inner wall of the negative pressure cup 40 relative to the bottom of the conical body 2621, so that the flow guiding path of the cleaning liquid is closer to the inner wall of the negative pressure cup 40, and the cleaning liquid can be better impacted onto the inner wall of the negative pressure cup 40, improving the cleaning effect.

[0062] Furthermore, a plurality of flow guiding strips 2622 are circumferentially and uniformly arranged along the bottom side wall of the conical body 2621, making the cleaning effect more sufficient and uniform. The circumferentially and uniformly arranged flow guiding strips 2622 can uniformly guide the cleaning liquid to all directions of the inner wall of the negative pressure cup 40, ensuring that the inner wall of the negative pressure cup 40 can be impacted by the cleaning liquid uniformly. The impact force and flow rate of the cleaning liquid on the inner wall of the negative pressure cup 40 at different positions are relatively consistent, which helps to stabilize the flow state of the cleaning liquid, making the cleaning effect of each part of the entire negative pressure cup 40 more uniform during the cleaning process. The uniformly arranged flow guiding strips 2622 make the flow guiding member 26 more balanced in force during operation, reduce local stress concentration, and contribute to improving the reliability of the flow guiding member 26.

[0063] In a possible implementation manner, the conical body 2621 is a hollow structure that penetrates along the axial direction of the conical body 2621. When the cleaning liquid reaches the conical body 2621 through the inlet of the negative pressure cup 40, a part of it is guided to the inner wall of the negative pressure cup 40 through the conical guiding surface, and a part of it continues to flow downward to the bottom of the negative pressure cup 40 through the hollow structure, enhancing the cleaning range of the negative pressure cup 40. At the same time, the hollow structure greatly reduces the weight of the conical body 2621. During the use and installation of the cleaning device, the lighter flow guiding member 26 is more convenient to operate and install, and also reduces the production cost.

[0064] Specifically, the installation part 261 includes an assembly pipe body, which is used to extend into the inlet of the negative pressure cup 40 from the inside of the cover body of the negative pressure cup 40 and connect with the inlet of the negative pressure cup 40. The assembly pipe body is provided with an outward convex section, and the outward convex section is used for stop cooperation with the surface of the inside of the cover body of the negative pressure cup 40 facing the flow guiding member 26. In a possible implementation manner, the assembly pipe body is connected to the inlet of the negative pressure cup 40 through threaded assembly, or the assembly pipe body is connected to the inlet of the negative pressure cup 40 through interference fit, which is not limited here.

[0065] In a possible implementation manner, the flow guiding member 26 further includes a plurality of connecting members 263 arranged at intervals along the circumferential direction of the side wall of the conical body 2621. The spaced connecting members 263 do not affect the flow of the cleaning liquid to the conical guiding surface of the conical body 2621. The installation part 261 and the flow guiding part 262 are connected through the plurality of connecting members 263 to ensure a good fixing effect. The number of the connecting members 263 can be 3, 4, 5, etc., and the number is as small as possible while ensuring the connection effect, so as not to affect the flow of the cleaning liquid.

[0066] In this embodiment, the negative pressure cup cleaning device also includes a recovery component 30, which includes a liquid receiving tank 31. The liquid receiving tank 31 is arranged below the first fixing member 11, and the notch of the liquid receiving tank 31 corresponds to multiple negative pressure cup mounting positions. During the cleaning process of the negative pressure cup 40, the cleaning liquid flows out of the negative pressure cup 40. The liquid receiving tank 31 can collect the cleaning liquid in time to prevent the cleaning liquid from flowing into the surrounding environment at will. The collected cleaning liquid can be processed uniformly.

[0067] Furthermore, the negative pressure cup cleaning device also includes a driving mechanism, and the liquid receiving tank 31 is transmission-connected to the driving mechanism. The driving mechanism can drive the liquid receiving tank 31 to move in the vertical direction so that the liquid receiving tank 31 is close to or away from the negative pressure cup 40. When the negative pressure cup 40 needs to be installed or removed, the driving mechanism can move the liquid receiving tank 31 to a position away from the negative pressure cup 40, providing the operator with a larger operating space, facilitating the placement and removal of the negative pressure cup 40, and improving work efficiency. At the same time, for negative pressure cups 40 of different specifications and heights, by adjusting the height of the liquid receiving tank 31, it can be ensured that the notch of the liquid receiving tank 31 always corresponds to the position of the negative pressure cup 40, effectively collecting the cleaning liquid, and improving the versatility of the cleaning device.

[0068] Furthermore, a drain pipe 311 is provided at the bottom of the liquid receiving tank 31, and the drain pipe 311 can quickly discharge the cleaning liquid collected in the liquid receiving tank 31. During the cleaning process, as the cleaning liquid continues to flow into the liquid receiving tank 31, if there is no effective discharge method, the liquid receiving tank 31 may be quickly filled up, affecting the continued collection of the cleaning liquid. The drain pipe 311 can promptly discharge the collected cleaning liquid to ensure that the liquid receiving tank 31 always has enough space to receive more cleaning liquid, and can keep the liquid level in the liquid receiving tank 31 within a safe range, thereby improving the reliability of the cleaning work.

[0069] In this embodiment, the cleaning component 20 includes multiple groups, and the multiple groups of cleaning components 20 are arranged in parallel along the second direction. The multiple groups of cleaning components 20 can perform cleaning operations on multiple negative pressure cups 40 at the same time, thereby shortening the overall cleaning time. Especially when a large number of negative pressure cups 40 need to be cleaned, work efficiency can be significantly improved.

[0070] An embodiment of the present application also discloses a lithium battery formation equipment, including a negative pressure cup cleaning device. The negative pressure cup cleaning device in the lithium battery formation equipment is the negative pressure cup cleaning device mentioned above. Therefore, the lithium battery formation equipment in this embodiment has substantially the same technical effect as the negative pressure cup cleaning device mentioned above. Since the technical effect of the negative pressure cup cleaning device has been fully explained, it will not be repeated here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A negative pressure cup cleaning device, characterized in that, Comprising: A cleaning component, the cleaning component includes a liquid inlet pipe, a gas inlet pipe and a confluence pipe. One end of the confluence pipe is communicated with the liquid inlet pipe and the gas inlet pipe, and the other end of the confluence pipe is used to be communicated with the inlet of a negative pressure cup. The liquid inlet pipe is used to introduce cleaning liquid, and the gas inlet pipe is used to introduce high-pressure gas.

2. The negative pressure cup cleaning device according to claim 1, characterized in that, The cleaning component further includes a liquid storage tank. The liquid inlet pipe and the gas inlet pipe are communicated with the confluence pipe through the liquid storage tank. A first valve is provided on the confluence pipe.

3. The negative pressure cup cleaning device according to claim 2, characterized in that, The liquid storage tank includes a tank body and a tank cover provided on the top of the tank body. The tank body and the tank cover enclose a cavity. The liquid inlet pipe and the gas inlet pipe are both connected to the tank cover and communicated with the cavity, and the confluence pipe is connected to the bottom of the tank body and communicated with the cavity.

4. The negative pressure cup cleaning device according to claim 2, wherein, The negative pressure cup cleaning device further includes a fixing frame component for fixing the negative pressure cup. The fixing frame component includes a first fixing member. A plurality of negative pressure cup mounting positions arranged side by side in a first direction are provided on the first fixing member. The confluence pipe includes a first confluence pipe and a second confluence pipe connected to each other. The first confluence pipe is a flexible pipe and is connected to the liquid storage tank. The second confluence pipe is a rigid pipe and is arranged along the first direction. The second confluence pipe is arranged opposite to the first fixing member. A plurality of connection holes corresponding to the negative pressure cup mounting positions one by one are provided on the second confluence pipe. The plurality of connection holes are communicated with a plurality of negative pressure cups through a plurality of connection pipes.

5. The negative pressure cup cleaning device according to claim 4, characterized in that, The first valve is provided on the first confluence pipe.

6. The negative pressure cup cleaning device according to claim 4, characterized in that, The negative pressure cup mounting positions include an adjacent first negative pressure cup mounting position and a second negative pressure cup mounting position. The connection holes include a first connection hole corresponding to the first negative pressure cup mounting position in a second direction and a second connection hole corresponding to the second negative pressure cup mounting position in the second direction. The second direction is perpendicular to the first direction. The connection pipes include a first connection pipe and a second connection pipe. The first connection pipe connects the negative pressure cup on the first negative pressure cup mounting position and the second connection hole, and the second connection pipe connects the negative pressure cup on the second negative pressure cup mounting position and the first connection hole.

7. The negative pressure cup cleaning device according to claim 1, characterized in that The cleaning component further includes a guiding member for being assembled in the negative pressure cup to guide the cleaning liquid to the inner wall of the negative pressure cup.

8. The negative pressure cup cleaning device according to claim 7, wherein The guiding member includes a mounting portion and a guiding portion connected to each other. The guiding portion is located below the mounting portion and is arranged at an interval from the mounting portion. The mounting portion is used to be connected to the inlet of the negative pressure cup. The guiding portion includes a conical body. The conical body includes a conical guiding surface. The small-diameter end of the conical guiding surface corresponds to the inlet of the negative pressure cup. The conical guiding surface is used to make the cleaning liquid flow along the conical guiding surface towards the inner wall of the negative pressure cup when the cleaning liquid reaches the conical guiding surface through the inlet of the negative pressure cup.

9. The negative pressure cup cleaning device according to claim 8, wherein The guiding portion further includes a plurality of guiding strips provided on the conical body. The plurality of guiding strips are arranged circumferentially along the bottom side wall of the conical body. The plurality of guiding strips are inclined, and the end of the guiding strip away from the conical body is closer to the inner wall of the negative pressure cup relative to the bottom of the conical body.

10. The negative pressure cup cleaning device according to claim 9, wherein, A plurality of the flow guiding bars are circumferentially and uniformly arranged along the bottom side wall of the conical body.

11. The negative pressure cup cleaning device according to claim 8, wherein, The conical body is a hollow structure that penetrates along the axial direction of the conical body.

12. The negative pressure cup cleaning device according to claim 8, wherein, The installation part includes an assembly pipe body, which is used to extend into the inlet of the negative pressure cup from the inside of the cover of the negative pressure cup and connect with the inlet of the negative pressure cup. The assembly pipe body is provided with an outward convex section, and the outward convex section is used for stop cooperation with the surface of the inside of the cover of the negative pressure cup facing the flow guiding part.

13. The negative pressure cup cleaning device according to claim 8, characterized in that, The flow guiding part further includes a plurality of connecting parts that are circumferentially spaced along the side wall of the conical body, and the plurality of connecting parts connect the installation part and the flow guiding part.

14. The negative pressure cup cleaning device according to claim 4, wherein, The negative pressure cup cleaning device further includes a recovery assembly, and the recovery assembly includes a liquid receiving tank, which is arranged below the first fixing part, and the notch of the liquid receiving tank corresponds to a plurality of negative pressure cup installation positions.

15. The negative pressure cup cleaning device according to claim 14, characterized in that, The negative pressure cup cleaning device further includes a driving mechanism, the liquid receiving tank is in transmission connection with the driving mechanism, and the driving mechanism can drive the liquid receiving tank to move in the vertical direction so that the liquid receiving tank approaches or moves away from the negative pressure cup.

16. The negative pressure cup cleaning device according to claim 15, wherein, A drain pipe is provided at the bottom of the liquid receiving tank.

17. The negative pressure cup cleaning device according to claim 6, characterized in that, The cleaning assemblies include multiple groups, and the multiple groups of cleaning assemblies are arranged side by side along the second direction.

18. A lithium battery formation device, characterized in that, Including the negative pressure cup cleaning device according to any one of claims 1-17.

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