Cleaning device and battery production apparatus

Abstract

The application relates to a cleaning device and a battery production equipment, the cleaning device comprising: a conveying mechanism; a cleaning mechanism arranged on one side of the conveying mechanism in a direction intersecting a preset direction; and a drying mechanism arranged downstream of the cleaning mechanism in the preset direction; and a circulating water tank comprising a tank body and a suction accessory, a containing cavity of the tank body comprising a separation zone and a clean water zone, the clean water zone being communicated with the cleaning mechanism, and at least part of the suction accessory being arranged in the separation zone and used for adsorbing an oil film from a mixture of a cleaning medium and the oil film. When a battery monomer in the application passes through the cleaning mechanism, the cleaning mechanism sprays the cleaning medium to the surface of the battery monomer, the cleaning medium can wash away the oil film on the surface of the battery monomer, and after cleaning, when the battery monomer passes through the drying mechanism, the drying mechanism dries the surface of the battery monomer, so that efficient automatic cleaning and drying of the battery monomer can be realized, the cleaning efficiency is improved, and the cleaning effect is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a cleaning device and battery production equipment. Background Technology

[0002] During the production of solid-state batteries, the individual cells need to undergo isostatic pressing to ensure close contact between the electrodes and the solid electrolyte, thus achieving densification of the solid-state battery. Specifically, during the isostatic pressing process, heat transfer oil is usually used as the medium. That is, the individual cells need to be immersed in heat transfer oil for isostatic pressing, which results in an oil film adhering to the surface of the individual cells.

[0003] Therefore, it is necessary to clean the battery cells after isostatic pressing to remove the oil film on their surface. However, current cleaning methods are inefficient and ineffective. Utility Model Content

[0004] Therefore, it is necessary to provide a cleaning device and battery production equipment to address the current problems of low cleaning efficiency and poor cleaning effect of the oil film on the surface of battery cells after isostatic pressing.

[0005] In a first aspect, this application provides a cleaning device for cleaning the oil film on the surface of a battery cell after isostatic pressing. The cleaning device includes a conveying mechanism, a cleaning mechanism, a drying mechanism, and a circulating water tank. The conveying mechanism is used to carry and convey the battery cell in a preset direction. The cleaning mechanism is disposed on one side of the conveying mechanism in a direction intersecting the preset direction and is used to spray a cleaning medium onto the surface of the battery cell. The drying mechanism is disposed downstream of the cleaning mechanism in the preset direction and is used to dry the cleaning medium on the surface of the battery cell. The circulating water tank is configured to collect the mixture of cleaning medium and oil film on the conveying mechanism and to circulate the separated cleaning medium to the cleaning mechanism. The circulating water tank includes a tank body and an adsorption element. The tank body has a receiving cavity inside, which includes a separation zone and a clean water zone. An inlet communicating with the separation zone is provided on the tank body, and the clean water zone is communicating with the cleaning mechanism. At least a portion of the adsorption element is disposed in the separation zone and is used to adsorb the oil film from the mixture of cleaning medium and oil film.

[0006] With the above structure, the surface of the battery cell can be cleaned and dried sequentially as the battery cell moves along a preset direction, removing the oil film on the surface of the battery cell, realizing efficient automatic cleaning and drying of the battery cell, improving cleaning efficiency and cleaning effect.

[0007] Furthermore, by setting up a circulating water tank, the mixture of cleaning medium and oil film after cleaning can be collected, and then the cleaning medium and oil film in the mixture can be separated. The purified cleaning medium can then be provided back to the cleaning mechanism to achieve the recycling of the cleaning medium.

[0008] In some embodiments, the cleaning mechanism includes at least two cleaning components arranged sequentially along a preset direction, each cleaning component being used to spray a cleaning medium onto the surface of a battery cell; wherein all cleaning components are configured to perform at least two cleaning operations on each battery cell.

[0009] With the above structure, the battery cells can be cleaned multiple times during the transportation process, resulting in better cleaning effect.

[0010] In some embodiments, the adsorption element includes an adsorption belt and a conveyor wheel, the conveyor wheel being rotatably disposed about its own axis, the adsorption belt being wound around the conveyor wheel, and a portion of the adsorption belt being located below the liquid surface of the mixture of cleaning medium and oil film in the separation zone.

[0011] In this way, by setting up an adsorption belt and a conveyor wheel, the oil in the mixture in the separation zone can be continuously adsorbed, thus achieving better separation between the cleaning medium and the oil film.

[0012] In some embodiments, the material of the adsorption strip includes polypropylene, polyurethane, alkyl ethylene polymer, pile fiber, and felt.

[0013] In this way, the material properties of the adsorption belt itself can be utilized to efficiently adsorb floating oil in the mixture by taking advantage of the microporous capillary effect and the hydrophobic and oleophilic properties, thus achieving simple and efficient separation of the cleaning medium from the floating oil.

[0014] In some embodiments, the adsorption element further includes a scraper, which is disposed outside the receiving cavity and located on one side of the adsorption belt, for scraping off the oil film adsorbed on the adsorption belt.

[0015] In this way, through the cooperation of the scraper, the adsorption belt and the conveyor wheel, the adsorption belt can move continuously under the drive of the conveyor wheel and continuously adsorb floating oil. At the same time, the scraper can scrape off the floating oil on the adsorption belt in time, so that the adsorption belt can continuously absorb oil.

[0016] In some embodiments, the circulating water tank further includes at least one separator disposed in the separation zone and distributed sequentially at intervals along the direction from the separation zone to the clean water zone; wherein, a portion of the separator extends below the liquid level of the mixture of cleaning medium and oil film.

[0017] In this way, by setting up separators, the cleaning medium and oil film in the separation zone can be separated, so that the oil film is blocked and stays in the separation zone, and then is sucked away by the adsorption belt. At the same time, the purified cleaning medium can smoothly enter the clean water zone and then be transported to the cleaning mechanism for recycling.

[0018] In some embodiments, the drying mechanism includes a plurality of air outlets, each air outlet being disposed toward the conveying mechanism, and each air outlet being used to blow dry gas onto the surface of the battery cell.

[0019] In this way, the air outlet can blow high-temperature and high-pressure dry gas to the battery cells, cutting off the water on the surface of the battery cells and allowing the surface of the battery cells to dry quickly.

[0020] In some embodiments, the cleaning device further includes a cover that covers the conveying mechanism and together with the conveying mechanism, forms a conveying space for the battery cell; wherein the cleaning mechanism and the drying mechanism are both located within the conveying space, and a partition is provided between the cleaning mechanism and the drying mechanism.

[0021] The above structure can separate the transport space from the external environment, thereby reducing the probability of water vapor diffusing into the external environment.

[0022] In some embodiments, the conveying space is further divided by a partition to form an isolation chamber, which is located upstream of the cleaning mechanism along a preset direction; the cleaning device also includes an air extraction component, which is connected to the isolation chamber and is used to extract water vapor from the isolation chamber.

[0023] In this way, the air extraction component can extract air from the inside of the isolation chamber, thereby removing water vapor from the isolation chamber and even from the entire transport space, reducing the probability of water vapor spreading into the external environment.

[0024] In some embodiments, the density of the cleaning medium is greater than the density of the oil film on the surface of the battery cell, and the cleaning medium and the oil film are immiscible.

[0025] In this way, the density of the cleaning medium is greater than that of the oil film, and the cleaning medium and the oil film are immiscible. This allows for better separation of the cleaning medium from the oil film, thus enabling the recycling of the cleaning medium.

[0026] Secondly, this application also provides a battery production apparatus, including the cleaning device described above.

[0027] The aforementioned cleaning device and battery production equipment have a conveying mechanism that can continuously convey battery cells along a preset direction, allowing the battery cells to pass through the cleaning mechanism and the drying mechanism in sequence. When the battery cells pass through the cleaning mechanism, the cleaning mechanism sprays cleaning medium onto the surface of the battery cells, which can wash away the oil film on the surface of the battery cells. After cleaning, when the battery cells pass through the drying mechanism, the drying mechanism dries the surface of the battery cells. In this way, efficient automatic cleaning and drying of battery cells can be achieved, improving cleaning efficiency and cleaning effect. Attached Figure Description

[0028] Figure 1This is a perspective view of a cleaning apparatus according to one or more embodiments.

[0029] Figure 2 This is a plan view of a cleaning apparatus according to one or more embodiments.

[0030] Figure 3 This is a schematic diagram of the structure of a circulating water tank in a cleaning apparatus according to one or more embodiments.

[0031] Explanation of reference numerals in the attached drawings: 100, cleaning device; 10, conveying mechanism; 20, cleaning mechanism; 30, drying mechanism; 40, circulating water tank; 50, cover; 60, conveying space; 70, isolation chamber; 80, air extraction assembly; 21, cleaning component; 22, water pump; 31, air outlet; 41, housing; 42, adsorption component; 43, receiving cavity; 44, inlet; 45, separator; 421, adsorption belt; 422, scraper; 431, separation zone; 432, clean water zone; a, preset direction. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as other fields. With the continuous expansion of the power battery device sector, the market demand is also constantly increasing.

[0039] A battery cell is the smallest unit that makes up a battery device. Based on their structure, battery cells can be divided into liquid-state battery cells and solid-state battery cells. Solid-state battery cells include a positive electrode, a negative electrode, and a solid electrolyte. Because they do not contain liquid electrolyte, solid-state battery cells have higher reliability and a longer lifespan.

[0040] Specifically, during the cycling process of a solid-state battery cell, the transport of lithium ions needs to occur at the solid-solid interface. Therefore, the tightness between the positive and negative electrodes and the electrolyte directly affects the ionic conductivity of the solid-state battery cell. This tightness between the positive and negative electrodes and the electrolyte is also known as the densification level of the solid-state battery cell.

[0041] Therefore, isostatic pressing is currently the commonly used method to achieve densification of solid-state battery cells. During isostatic pressing, heat transfer oil is typically used as the medium; that is, the battery cells are immersed in heat transfer oil for isostatic pressing.

[0042] As a result, a layer of oil film usually adheres to the surface of the battery cell after isostatic pressing. This oil film can affect subsequent processes and may even penetrate into the battery cell. Therefore, it is necessary to clean the battery cells after isostatic pressing to remove the oil film from their surface.

[0043] However, current cleaning methods mostly rely on manual operation, where the oil film on the surface of individual battery cells is wiped and cleaned by hand. This cleaning method is inefficient and yields poor cleaning results.

[0044] Based on the above considerations, in order to solve the problem of low cleaning efficiency and poor cleaning effect of the oil film on the surface of battery cells after isostatic pressing, one or more embodiments of this application provide a cleaning device. The conveying mechanism can continuously convey battery cells in a preset direction, so that the battery cells can pass through the cleaning mechanism and the drying mechanism in sequence. When the battery cells pass through the cleaning mechanism, the cleaning mechanism sprays a cleaning medium onto the surface of the battery cells. The cleaning medium can wash away the oil film on the surface of the battery cells. After cleaning, when the battery cells pass through the drying mechanism, the drying mechanism dries the surface of the battery cells. In this way, efficient automatic cleaning and drying of battery cells can be achieved, improving cleaning efficiency and cleaning effect.

[0045] Please refer to the following: Figure 1 and Figure 2 This application provides a cleaning apparatus 100 for cleaning the oil film on the surface of battery cells after isostatic pressing. The cleaning apparatus 100 includes a conveying mechanism 10, a cleaning mechanism 20, and a drying mechanism 30. The conveying mechanism 10 carries and conveys the battery cells along a predetermined direction a. The cleaning mechanism 20 is disposed on one side of the conveying mechanism 10 along a direction intersecting the predetermined direction a, and is used to spray a cleaning medium onto the surface of the battery cells. The drying mechanism 30 is disposed downstream of the cleaning mechanism 20 along the predetermined direction a, and is used to dry the cleaning medium on the surface of the battery cells.

[0046] It should be noted that isostatic pressing refers to placing the battery cell in the heat transfer oil or other heat transfer medium in the isostatic pressing device. The isostatic pressing device pressurizes the battery cell through the heat transfer oil, so that the positive and negative electrode plates in the battery cell and the solid electrolyte can achieve good solid-solid contact, increase the contact area between the contact interfaces, and improve the densification of the battery cell.

[0047] After the static pressure treatment is completed, the battery cells are removed from the heat transfer oil. At this time, a layer of oil film is attached to the surface of the battery cells, which needs to be removed by the cleaning device 100.

[0048] Understandably, the outer perimeter of a battery cell is covered with an aluminum-plastic film, and the oil film is actually attached to this film. After cleaning the battery cell, the original aluminum-plastic film is usually removed, and a new aluminum-plastic film is then applied around the battery cell.

[0049] The conveying mechanism 10 can move along a preset direction a, thereby driving the battery cells placed on it to move along the preset direction a, realizing the conveying of the battery cells. As a specific embodiment, the conveying mechanism 10 can be, but is not limited to, a chain circulation line.

[0050] Specifically, a robotic arm can pick up individual battery cells from the previous process and place them on a chain circulation line. The chain circulation line moves along a preset direction 'a', thereby causing the battery cells placed on it to move synchronously along the preset direction 'a'.

[0051] The cleaning mechanism 20 is disposed on one side of the conveying mechanism 10 along a direction intersecting with the preset direction a. That is, the cleaning mechanism 20 can be disposed on one side of the chain circulation line along the width direction of the chain circulation line or above the chain circulation line, so as to clean the battery cells placed on the chain circulation line.

[0052] The cleaning mechanism 20 can spray cleaning medium onto the surface of the battery cell, and the cleaning medium can remove the oil film on the surface of the battery cell, thereby cleaning the battery cell.

[0053] The drying mechanism 30 is positioned downstream of the cleaning mechanism 20 along a preset direction a. Thus, after the battery cell is cleaned by the cleaning mechanism 20, the cleaning medium on the surface of the battery cell can be removed by the drying mechanism 30, keeping the battery cell dry so that it can proceed to the next process.

[0054] Thus, through the above structure, the surface of the battery cell can be cleaned and dried sequentially as the battery cell moves along the preset direction a, removing the oil film on the surface of the battery cell, achieving efficient automatic cleaning and drying of the battery cell, improving cleaning efficiency and cleaning effect.

[0055] In some embodiments, the cleaning mechanism 20 includes at least two cleaning elements 21 arranged sequentially along a preset direction a, each cleaning element 21 being used to spray a cleaning medium onto the surface of a battery cell. All cleaning elements 21 are configured to perform at least two cleaning operations on each battery cell.

[0056] Specifically, the cleaning components 21 are arranged sequentially along a preset direction a, so that each cleaning component 21 forms a corresponding cleaning station. As the battery cell moves along the preset direction a, it can be cleaned once every time it passes a cleaning component 21. In this way, the battery cell can be cleaned multiple times, improving the cleaning effect.

[0057] Furthermore, each cleaning component 21 may include multiple spray pipes, which are arranged toward the battery cells on the conveying mechanism 10. The cleaning medium is sprayed onto the surface of the battery cells through the spray pipes to clean the surface of the battery cells.

[0058] Therefore, with the above structure, the battery cells can be cleaned multiple times during the transportation process, resulting in better cleaning effect.

[0059] In some embodiments, the density of the cleaning medium is greater than the density of the oil film on the surface of the battery cell, and the cleaning medium and the oil film are immiscible.

[0060] As a specific embodiment, the cleaning medium can be, but is not limited to, hot water, and the temperature of the hot water can be controlled between 90°C and 100°C. In this way, replacing the original hydrocarbon cleaning agent with hot water can make the cleaning process more stable.

[0061] Furthermore, the density of the cleaning medium is greater than that of the oil film, and the cleaning medium and the oil film are immiscible. This allows for better separation of the cleaning medium from the oil film, thereby enabling the recycling of the cleaning medium.

[0062] In some embodiments, the cleaning device 100 further includes a circulating water tank 40 communicating with the cleaning mechanism 20. The circulating water tank 40 is configured to collect a mixture of cleaning medium and oil film on the conveying mechanism 10 and to circulate the separated cleaning medium to the cleaning mechanism 20.

[0063] Specifically, after the cleaning mechanism 20 sprays hot water onto the surface of the battery cell, the hot water carries away the oil film on the surface of the battery cell, forming a water-oil mixture. The circulating water tank 40 can collect the water-oil mixture, then separate the water and oil inside the circulating water tank 40, and then supply the separated water back to the cleaning mechanism 20 for recycling.

[0064] Furthermore, an outlet can be opened below the chain circulation line, and then the circulating water tank 40 can be connected to the outlet, so that the water-oil mixture can be collected.

[0065] Multiple circulating water tanks 40 can be set, and each circulating water tank 40 can be connected to a cleaning component 21. In this way, the circulating water tank 40 can provide purified hot water to the cleaning component 21 connected to it.

[0066] The circulating water tank 40 and the cleaning component 21 connected to it can be connected by a water pump 22. The water pump 22 pumps the purified hot water in the circulating water tank 40 to the cleaning component 21, and then sprays it onto the surface of the battery cell through the cleaning component 21.

[0067] Thus, by setting up a circulating water tank 40, the mixture of cleaning medium and oil film after cleaning can be collected, and then the cleaning medium and oil film in the mixture can be separated, and the purified cleaning medium can be provided back to the cleaning mechanism 20 to realize the recycling of the cleaning medium.

[0068] like Figure 3 As shown, in some embodiments, the circulating water tank 40 includes a tank body 41 and an adsorption element 42. The tank body 41 has an internal receiving cavity 43, which includes a separation zone 431 and a purified water zone 432. The tank body 41 has an inlet 44 communicating with the separation zone 431, and the purified water zone 432 is communicating with the cleaning mechanism 20. At least a portion of the adsorption element 42 is disposed in the separation zone 431 for adsorbing oil film from the mixture of cleaning medium and oil film.

[0069] Specifically, because the density of the cleaning medium is greater than that of the oil film, and the cleaning medium and the oil film are immiscible, when the mixture of the cleaning medium and the oil film enters the receiving cavity 43, the cleaning medium is located below the oil, while the oil floats on the surface of the cleaning medium.

[0070] An inlet 44 is provided on the side wall of the housing 41, and the inlet 44 can be connected to the lower outlet of the chain circulation line through a pipe. Thus, the water-oil mixture first enters the separation zone 431 within the receiving cavity 43. In the separation zone 431, the oil floats on the surface of the water, and the adsorption member 42 adsorbs the oil on the surface, thereby separating the water and oil. The separated water flows into the clean water zone 432, and then is pumped by the water pump 22 installed in the clean water zone 432 to the cleaning mechanism 20.

[0071] Understandably, the number of adsorption elements 42 can be set according to actual needs. For example, if two adsorption elements 42 are set, the two adsorption elements 42 can work together to absorb oil and improve the oil absorption effect.

[0072] The above structure allows the oil film to be drawn away from the cleaning medium, achieving separation between the cleaning medium and the oil film, thereby providing the cleaning mechanism 20 with purified cleaning medium and realizing the recycling of the cleaning medium.

[0073] In some embodiments, the adsorption element 42 includes an adsorption belt 421 and a conveyor wheel (not shown in the figure). The conveyor wheel is rotatably arranged about its own axis, the adsorption belt 421 is wound around the conveyor wheel, and a portion of the adsorption belt 421 is located below the liquid surface of the mixture of cleaning medium and oil film in the separation zone 431.

[0074] Specifically, the axis of the conveyor wheel can be set horizontally, and the specific number of conveyor wheels can be adjusted according to actual installation requirements. For example, two conveyor wheels can be set, and the adsorption belt 421 is wound around the two conveyor wheels in sequence. Then, the conveyor wheels rotate around their own axes, driving the adsorption belt 421 on them to move.

[0075] The adsorption belt 421 can adsorb oil in the mixture. At the same time, a portion of the adsorption belt 421 extends below the liquid surface of the mixture in the separation zone 431. As the adsorption belt 421 moves with the conveyor wheel, the portion of the adsorption belt 421 below the liquid surface will absorb oil. Then, this portion of the adsorption belt 421 moves above the liquid surface, and the clean portion of the adsorption belt 421 moves below the liquid surface, continuously achieving oil absorption.

[0076] In this way, by setting up the adsorption belt 421 and the conveyor wheel, the oil in the mixture in the separation zone 431 can be continuously adsorbed, thereby better achieving the separation between the cleaning medium and the oil film.

[0077] In some embodiments, the material of the adsorption strip 421 includes polypropylene, polyurethane, alkyl ethylene polymer, pile fiber, and felt.

[0078] Specifically, the material of the adsorption strip 421 may be set to polypropylene, polyurethane, alkyl ethylene polymer, pile fiber, or felt.

[0079] In this way, the material properties of the adsorption band 421 can be utilized to efficiently adsorb floating oil in the mixture by taking advantage of the microporous capillary effect and the hydrophobic and oleophilic properties, thus achieving simple and efficient separation of the cleaning medium from the floating oil.

[0080] In some embodiments, the adsorption member 42 further includes a scraper 422, which is disposed outside the receiving cavity 43 and located on one side of the adsorption belt 421, for scraping off the oil film adsorbed on the adsorption belt 421.

[0081] Specifically, the scraper 422 is positioned above the liquid surface of the mixture, and the oil film adsorbed on the adsorption belt 421 can be scraped off by the scraper 422.

[0082] Thus, through the cooperation of the scraper 422, the adsorption belt 421, and the conveyor wheel, the adsorption belt 421 can move continuously under the drive of the conveyor wheel and continuously adsorb floating oil. At the same time, the scraper 422 can scrape off the floating oil on the adsorption belt 421 in time, so that the adsorption belt 421 can continuously absorb oil.

[0083] In some embodiments, the circulating water tank 40 further includes at least one separator 45, which is disposed in the separation zone 431 and distributed sequentially at intervals along the direction from the separation zone 431 toward the clean water zone 432. Part of the separator 45 extends below the level of the mixture of cleaning medium and oil film.

[0084] Specifically, the separator 45 may be, but is not limited to, a partition, which is set in the separation zone 431 and spaced out sequentially along the direction of water flow.

[0085] The lower end of the baffle can be spaced apart from the bottom wall of the receiving cavity 43, so that when the mixture enters the separation zone 431, the floating oil on the water surface is blocked by the baffle, and the water flows into the clean water zone 432 from below the baffle.

[0086] Furthermore, by setting multiple separators 45, multiple barriers and separations can be formed in the separation zone 431, thereby improving the purification effect.

[0087] Thus, by setting the separator 45, the cleaning medium and the oil film in the separation zone 431 can be separated, so that the oil film is blocked and stays in the separation zone 431, and then is sucked away by the adsorption belt 421. At the same time, the purified cleaning medium can smoothly enter the clean water zone 432, and then be transported to the cleaning mechanism 20 for recycling.

[0088] Please refer to it again. Figure 2 In some embodiments, the drying mechanism 30 includes a plurality of air outlets 31, each air outlet 31 having its air outlet facing the conveying mechanism 10, and each air outlet 31 being used to blow dry gas onto the surface of the battery cell.

[0089] Specifically, the air outlet 31 may be configured as an air knife, with the air outlet facing the conveying mechanism 10, specifically facing the battery cell on the conveying mechanism 10.

[0090] In this way, the air outlet 31 can blow high-temperature and high-pressure dry gas to the battery cell, cutting off the water on the surface of the battery cell and allowing the surface of the battery cell to be dried quickly.

[0091] In some embodiments, the cleaning device 100 further includes a cover 50, which covers the conveying mechanism 10 and together with the conveying mechanism 10 encloses a conveying space 60 for the battery cell. The cleaning mechanism 20 and the drying mechanism 30 are both located within the conveying space 60, and a partition is provided between the cleaning mechanism 20 and the drying mechanism 30.

[0092] Specifically, since hot water is used as the cleaning medium, water vapor is generated during the cleaning process. The production environment for solid-state battery cells needs to be kept dry. Therefore, the conveying space 60 formed by the cover 50 is isolated from the external environment, which can reduce the probability of water vapor diffusing into the external environment.

[0093] Furthermore, partitions are provided between each cleaning component 21 and between the cleaning component 21 and the drying mechanism 30. The lower end of the partition is spaced apart from the conveying mechanism 10. When the battery cell is placed on the conveying mechanism 10, the battery cell can move through the gap between the partition and the conveying mechanism 10.

[0094] In this way, by setting a partition to separate the cleaning mechanism 20 and the drying mechanism 30, they can each clean or dry the battery cells in their own area.

[0095] The above structure can separate the transport space 60 from the external environment, thereby reducing the probability of water vapor diffusing into the external environment.

[0096] In some embodiments, the conveying space 60 is further divided by a partition to form an isolation chamber 70, which is located upstream of the cleaning mechanism 20 along a predetermined direction a. The cleaning device 100 also includes an extraction assembly 80, which is in communication with the isolation chamber 70 and is used to extract water vapor from the isolation chamber 70.

[0097] Specifically, an isolation chamber 70 is formed upstream of the cleaning mechanism 20 by a partition. That is, the battery cells are transported by the conveying mechanism 10, first entering the isolation chamber 70, and then sequentially entering the area corresponding to the cleaning mechanism 20 and the area corresponding to the drying mechanism 30.

[0098] The air extraction assembly 80 is internally connected to the isolation chamber 70. Since there is a gap between the lower end of the partition and the conveying mechanism 10 that allows battery cells to pass through, although the isolation chamber 70, the cleaning mechanism 20 and the conveying mechanism 10 are separated by the partition, they are actually still connected.

[0099] In this way, the air extraction component 80 extracts air from the interior of the isolation chamber 70, which can extract water vapor from the isolation chamber 70, and even water vapor from the entire conveying space 60, reducing the probability of water vapor spreading to the external environment.

[0100] Based on the same concept as the cleaning apparatus 100 described above, this application also provides a battery production apparatus, including the cleaning apparatus 100 described above.

[0101] According to one or more embodiments, when this application is used, a robotic arm can first be used to clamp and move the battery cell from the previous process to the chain circulation line, and the chain circulation line drives the battery cell on it to move along a preset direction a.

[0102] After the battery cell enters the conveying space 60, it first passes through the isolation chamber 70, and then passes through multiple cleaning components 21 in sequence. Each cleaning component 21 forms a cleaning station. The cleaning component 21 sprays hot water onto the surface of the battery cell at the corresponding cleaning station. The hot water washes away the oil film and removes the oil film from the surface of the battery cell.

[0103] After passing through each cleaning station in sequence, the battery cells arrive at the drying station corresponding to the air outlet 31. Multiple drying stations can be set up according to actual needs.

[0104] The air outlet 31 blows high-temperature, high-pressure drying gas onto the surface of the battery cell. The drying gas cuts away the liquid on the surface of the battery cell, causing the surface of the battery cell to dry rapidly. After drying, the battery cell can be transferred to the unloading station by a robotic arm for subsequent processing operations.

[0105] During cleaning, hot water and the oil film form a water-oil mixture, which flows into the receiving cavity 43 of the circulating water tank 40 and first enters the separation zone 431. In the separation zone 431, on the one hand, the floating oil on the water surface is blocked within the separation zone 431 by the separator 45, allowing the water below to smoothly enter the clean water zone 432. On the other hand, the adsorption belt 421 can adsorb the floating oil in the separation zone 431 and carry it away. The water in the clean water zone 432 is pumped to each cleaning component 21 by the water pump 22, and then sprayed onto the surface of the battery cells through the cleaning components 21, achieving recycling.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cleaning device, characterized in that, The cleaning device includes: A conveying mechanism is used to carry and transport battery cells in a preset direction; A cleaning mechanism is disposed on one side of the conveying mechanism along a direction intersecting the preset direction, and is used to spray cleaning medium onto the surface of the battery cell; A drying mechanism, disposed downstream of the cleaning mechanism along the preset direction, is used to dry the cleaning medium on the surface of the battery cell; and A circulating water tank is configured to collect the mixture of cleaning medium and oil film on the conveying mechanism and to circulate the separated cleaning medium to the cleaning mechanism; the circulating water tank includes a tank body and an adsorption element, the tank body has an internal cavity, the cavity includes a separation zone and a clean water zone, the tank body has an inlet communicating with the separation zone, and the clean water zone is communicating with the cleaning mechanism; At least a portion of the adsorption element is disposed in the separation zone for adsorbing oil film from the mixture of the cleaning medium and the oil film.

2. The cleaning device according to claim 1, characterized in that, The cleaning mechanism includes at least two cleaning components arranged sequentially along the preset direction, and each of the cleaning components is used to spray a cleaning medium onto the surface of the battery cell. All of the cleaning components are configured to perform at least two cleaning operations on each of the battery cells.

3. The cleaning device according to claim 1, characterized in that, The adsorption element includes an adsorption belt and a conveyor wheel. The conveyor wheel is rotatably arranged around its own axis. The adsorption belt is wound around the conveyor wheel, and a portion of the adsorption belt is located below the liquid surface of the mixture of the cleaning medium and the oil film in the separation zone.

4. The cleaning device according to claim 3, characterized in that, The materials of the adsorption belt include polypropylene, polyurethane, alkyl ethylene polymer, pile fiber, and felt.

5. The cleaning device according to claim 3, characterized in that, The adsorption element further includes a scraper, which is disposed outside the receiving cavity and located on one side of the adsorption belt, for scraping off the oil film adsorbed on the adsorption belt.

6. The cleaning apparatus according to claim 1, characterized in that, The circulating water tank further includes at least one partition, which is disposed in the separation zone and is distributed sequentially at intervals along the direction from the separation zone to the purified water zone; In this configuration, a portion of the separator extends below the liquid level of the mixture of the cleaning medium and the oil film.

7. The cleaning device according to claim 1, characterized in that, The drying mechanism includes multiple air outlets, each with its outlet facing the conveying mechanism, and each air outlet is used to blow dry gas onto the surface of the battery cell.

8. The cleaning apparatus according to claim 1, characterized in that, The cleaning device also includes a cover, which is placed over the conveying mechanism and together with the conveying mechanism, forms the conveying space for the battery cell. The cleaning mechanism and the drying mechanism are both located within the conveying space, and a partition is provided between the cleaning mechanism and the drying mechanism.

9. The cleaning apparatus according to claim 8, characterized in that, The conveying space is further divided into isolation chambers by partitions, and the isolation chambers are located upstream of the cleaning mechanism along the preset direction; The cleaning device also includes an air extraction component, which is connected to the isolation chamber and is used to extract water vapor from the isolation chamber.

10. The cleaning apparatus according to claim 1, characterized in that, The density of the cleaning medium is greater than the density of the oil film on the surface of the battery cell, and the cleaning medium and the oil film are immiscible.

11. A battery manufacturing apparatus, characterized in that, Includes the cleaning apparatus as described in any one of claims 1-10.

Images