Battery slurry filtering device

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a battery slurry filtering device which comprises a device shell, a supporting structure and a filter screen sleeve, a feeding port and a discharging port are formed in the two opposite ends of the device shell respectively. The supporting structure is arranged in the device shell, the filter screen sleeve is detachably arranged outside the supporting structure in a surrounding mode, a first cavity is formed in the filter screen sleeve, and a second cavity is formed between the filter screen sleeve and the device shell. Slurry can enter the device shell from the feeding port, impurities in the slurry can be filtered into one of the first cavity and the second cavity under the filtering effect of the filter screen sleeve, and the filtered slurry is contained in the other one of the first cavity and the second cavity. According to the battery slurry filtering device, the filter screen sleeve is convenient to disassemble and clean, and the filtering effect and efficiency can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a battery slurry filtering device. Background Art

[0002] Lithium batteries are widely used in many fields due to their advantages, including high voltage, high energy density, long cycle life, no memory effect, and zero pollution. Lithium batteries are equipped with positive and negative electrodes. During the electrode preparation process, a special solvent and adhesive are mixed with powdered positive and negative active materials. After stirring evenly, a paste of positive and negative electrode coating is formed. The positive and negative electrode slurry is then applied to the surface of a metal foil and dried to form the positive and negative electrode sheets.

[0003] However, since the mixed positive and negative electrode slurries may contain many impurities, directly coating them on metal foil will affect the coating effect and ultimately the battery quality. Therefore, to ensure the stability of the coating process and the consistency of the quality of the positive and negative electrode products, the positive and negative electrode slurries need to be filtered before coating to remove large particles and impurities.

[0004] Existing devices for filtering positive and negative electrode slurries are pipe-type mesh filters. During the slurry filtration process, the filter holes are prone to clogging, making them difficult to clean and affecting production efficiency. To address this issue, existing technologies also provide filters with replaceable filter elements. However, the inlet and outlet of these filters are located at one end of the filter element, resulting in low flow rate and low filtration efficiency.

[0005] Therefore, there is an urgent need for a battery slurry filtering device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a battery slurry filtering device, which is convenient for disassembly and cleaning of a filter cover and can ensure filtering effect and efficiency.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] Battery slurry filtration device, comprising:

[0009] A device housing, wherein a feed inlet and a discharge outlet are respectively provided at opposite ends of the device housing;

[0010] A support structure and a filter cover, wherein the support structure is disposed within the device housing, and the filter cover is detachably disposed outside the support structure, a first cavity is formed within the support structure, and a second cavity is formed between the filter cover and the device housing;

[0011] The slurry can enter the device housing from the feed port, and the slurry can be filtered from the first cavity through the filter sleeve to the second cavity, or from the second cavity through the filter sleeve to the first cavity.

[0012] As a preferred solution of the battery slurry filtering device provided by the present invention, the support structure includes a support frame body and a base, the support frame body is arranged opposite to the feed port or the discharge port, and the base is detachably connected to one end of the support frame body.

[0013] As a preferred solution of the battery slurry filtering device provided by the present invention, the support structure is provided with a bracket through hole, the first cavity is connected to the second cavity through the bracket through hole, and the aperture of the bracket through hole is larger than the aperture of the filter hole of the filter sleeve.

[0014] As a preferred solution of the battery slurry filtering device provided by the present invention, multiple layers of filter holes are provided along the thickness direction of the filter mesh sleeve, and the number of the filter holes increases layer by layer in the direction away from or close to the first cavity.

[0015] As a preferred solution of the battery slurry filtration device provided by the present invention, the device shell includes a detachably connected top cover and a shell body, the feed port is opened in one of the top cover and the shell body, the discharge port is opened in the other, and the support structure is connected to the top cover.

[0016] As a preferred solution of the battery slurry filtering device provided by the present invention, the bottom of the device housing is tilted to form a guide surface, and the feed port or the discharge port is provided at the lowest point of the guide surface.

[0017] As a preferred solution of the battery slurry filtration device provided by the present invention, the discharge port is connected to the first cavity, the feed port is connected to the second cavity, and the second cavity is provided with a slag discharge valve, which is spaced apart from the feed port and can discharge impurities in the second cavity.

[0018] As a preferred solution of the battery slurry filtering device provided by the present invention, both ends of the filter sleeve are open, and the filter sleeve ring is arranged on the peripheral side of the supporting structure.

[0019] As a preferred solution of the battery slurry filtering device provided by the present invention, one end of the filter sleeve is open and the other end is closed, and the filter sleeve is sleeved on the circumferential side and bottom of the supporting structure.

[0020] As a preferred embodiment of the battery slurry filtering device provided by the present invention, the battery slurry filtering device further includes a liquid pump, and the feed port and the discharge port are respectively provided with the liquid pumps, and the slurry can flow between the first cavity and the second cavity under the action of the liquid pumps.

[0021] Beneficial effects of the utility model:

[0022] The battery slurry filtering device provided by the present invention includes a device housing, a support structure and a filter sleeve. A feed port and a discharge port are respectively provided at opposite ends of the device housing. The support structure is provided inside the device housing, and the filter sleeve is detachably arranged outside the support structure. A first cavity is formed inside the filter sleeve, and a second cavity is formed between the filter sleeve and the device housing. The slurry can enter the device housing from the feed port, and impurities in the slurry can be filtered into one of the first cavity and the second cavity under the filtering action of the filter sleeve, and the filtered slurry is accommodated in the other. The support structure can provide an installation base for the filter sleeve, so that the filter sleeve can maintain a stable shape in the device housing, which is convenient for battery slurry filtering. The detachable connection between the filter sleeve and the support structure can facilitate the removal of the filter sleeve for cleaning or replacement to ensure the filtering effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an external schematic diagram of the battery slurry filtering device provided in Example 1 of the present utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the battery slurry filtering device provided in Example 1 of the present utility model;

[0025] Figure 3 yes Figure 2 A partial enlarged view of the structure marked as A;

[0026] Figure 4 yes Figure 2 A partial enlarged view of the structure marked as B;

[0027] Figure 5 This is an external schematic diagram of the battery slurry filtering device provided in the second embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of the internal structure of the battery slurry filtering device provided in Example 2 of the present utility model;

[0029] Figure 7 This is a schematic diagram of the internal structure of the battery slurry filtering device provided in Example 3 of the present utility model.

[0030] In the picture:

[0031] 100, device housing; 110, feed port; 120, discharge port; 130, first cavity; 140, second cavity; 150, top cover; 160, housing body; 170, guide surface; 180, slag discharge valve;

[0032] 200, support structure; 210, support frame body; 220, base; 230, bracket through hole;

[0033] 300, filter cover;

[0034] 400. Clamp structure. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0040] It should also be noted that, in the description of this utility model, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0043] Example 1

[0044] Figure 1 The external schematic diagram of the battery slurry filtering device provided in the first embodiment of the present utility model is shown; Figure 2 The internal structure diagram of the battery slurry filtering device provided by the first embodiment of the present invention is shown. Figure 1 and Figure 2 , this embodiment provides a battery slurry filtering device.

[0045] The battery slurry filtering device includes a device housing 100, a support structure 200, and a filter sleeve 300. The device housing 100 is provided with a feed port 110 and a discharge port 120 at opposite ends in the direction of gravity. The support structure 200 is disposed within the device housing 100, and the filter sleeve 300 is detachably disposed outside the support structure 200. A first cavity 130 is formed within the filter sleeve 300, and a second cavity 140 is formed between the filter sleeve 300 and the device housing 100. The slurry can enter the device housing 100 from the feed port 110, and impurities in the slurry can be filtered into one of the first cavity 130 and the second cavity 140 under the filtering action of the filter sleeve 300, and the filtered slurry is contained in the other.

[0046] In this embodiment, the feed port 110 is disposed at the top end of the device housing 100 in the direction of gravity and is connected to the first cavity 130; the discharge port 120 is disposed at the bottom end of the device housing 100 in the direction of gravity and is connected to the second cavity 140. The slurry can enter the first cavity 130 through the feed port 110, and after being filtered by the filter mesh 300, impurities remain in the first cavity 130 within the filter mesh 300. The filtered slurry flows into the second cavity 140 and can be discharged from the discharge port 120 at the bottom end of the device housing 100, thereby achieving filtration of the slurry and separation of impurities.

[0047] More specifically, Figure 3 Show Figure 2 The enlarged view of the structure marked as A in the figure, refer to Figure 2 and Figure 3 The device housing 100 includes a detachably connected top cover 150 and a housing body 160. In this embodiment, the feed port 110 is provided on the top cover 150, and the discharge port 120 is provided at the bottom end of the housing body 160 in the direction of gravity. The outer circumference of the top of the support structure 200 is provided with an external thread, and the groove wall of the groove of the top cover 150 for mounting the support structure 200 is provided with an internal thread. The support structure 200 can be connected to the side of the top cover 150 facing the internal space of the device housing 100 by means of a threaded connection. Through the above arrangement, the support structure 200 and the top cover 150 can be easily disassembled and separated, and the support structure 200 can be easily cleaned.

[0048] More specifically, Figure 4 Show Figure 2 The enlarged view of the structure marked as B, refer to Figure 2 and Figure 4 , the support structure 200 includes a support frame body 210 and a base 220. The support frame body 210 is a hollow cylindrical structure, coaxially facing and connected to the feed port 110. The first cavity 130 is formed in the support frame body 210, and the base 220 is detachably connected to the end of the support frame body 210 away from the feed port 110. In this embodiment, the base 220 is provided with an external thread, and the inner wall of one end of the support frame body 210 is provided with an internal thread, and the external thread matches the internal thread, and the two can be spirally connected, thereby realizing a detachable connection between the base 220 and the support frame body 210. Through the above arrangement, it is convenient to decompose the support structure 200 itself, thereby improving the cleaning effect of the support structure 200.

[0049] More specifically, the bottom of the device housing 100 in the direction of gravity is inclined to form a guide surface 170. In this embodiment, the discharge port 120 is located at the lowest point of the guide surface 170. The filtered slurry in the second cavity 140 can flow along the guide surface 170 to the discharge port 120, thereby preventing the slurry from accumulating on the inner wall of the second cavity 140 and allowing it to flow smoothly to the discharge port 120. Preferably, in this embodiment, the bottom of the device housing 100 in the direction of gravity has a conical structure, and the discharge port 120 is coaxially arranged with the device housing 100 and located at the geometric center of the bottom of the device housing 100.

[0050] Continue to refer to Figure 2 The support frame body 210 has a plurality of support through holes 230 formed on its peripheral side. The first cavity 130 can be connected to the second cavity 140 through the support through holes 230 . The support through holes 230 can allow slurry to flow.

[0051] Preferably, the aperture of the support through hole 230 is larger than the filtration aperture of the filter mesh sleeve 300. Through the above arrangement, it is possible to avoid the support frame body 210 generating resistance to the flow and filtration of the slurry, affecting the flow efficiency of the slurry and further affecting its filtration efficiency.

[0052] Preferably, multiple layers of filter holes are provided along the thickness direction of the filter sleeve 300, with the number of filter holes increasing layer by layer as the filter sleeve moves away from the first cavity 130. With this arrangement, as the slurry gradually penetrates the filter sleeve 300, the filtration fineness gradually increases, and impurities in the slurry are gradually blocked, thereby ensuring the filtration effect of the filter sleeve 300 on the slurry.

[0053] Continue to refer to Figure 2 In this embodiment, the filter cover 300 is open at both ends and is disposed around the peripheral side of the support frame body 210. A clamp structure 400 is provided on the peripheral side of the upper end and the peripheral side of the lower end of the filter cover 300, respectively. The clamp structure 400 can detachably fasten the filter cover 300 to the support frame body 210, facilitating removal and installation of the filter cover 300.

[0054] Optionally, the battery slurry filtration device further includes a liquid pump. The feed port 110 and the discharge port 120 are each provided with the liquid pump, and the slurry can flow between the first cavity 130 and the second cavity 140 under the action of the liquid pump. The liquid pump can promote the flow of the slurry between the feed port 110 and the discharge port 120, promote the filtration of the slurry, and improve the filtration efficiency. In this embodiment, the liquid pump can specifically be a screw pump in the prior art.

[0055] Preferably, in this embodiment, the filter cover 300 is made of polypropylene. Compared with the stainless steel mesh in the prior art, the filter cover 300 made of polypropylene has better filtering effect and is not easy to clog.

[0056] Example 2

[0057] This embodiment provides a battery slurry filtering device.

[0058] Figure 5 The external schematic diagram of the battery slurry filtering device provided in the second embodiment of the present utility model is shown; Figure 6 The internal structure diagram of the battery slurry filtering device provided by the second embodiment of the present invention is shown. Figure 5 and Figure 6 The difference between this embodiment and the first embodiment is that the positions of the feed port 110 and the discharge port 120 of the battery slurry filtering device provided in this embodiment are opposite to those of the battery slurry filtering device in the first embodiment.

[0059] Specifically, in this embodiment, the discharge port 120 is provided on the top cover 150 and is connected to the first cavity 130, and the feed port 110 is provided at the bottom of the housing body 160 in the direction of gravity and is connected to the second cavity 140. In this embodiment, the feed port 110 is provided at the lowest point of the guide surface 170, and a slag discharge valve 180 is provided at a distance from the side of the feed port 110. The slag discharge valve 180 can discharge impurities in the second cavity 140. In other words, after the slurry to be filtered enters the internal space of the device housing 100 from the feed port 110, the impurities are retained in the second cavity 140 under the action of the liquid pump and the filter screen 300. The filtered slurry enters the first cavity 130 and can be discharged from the discharge port 120. Then, the slag discharge valve 180 is opened to discharge the impurities.

[0060] More specifically, in this embodiment, the number of filter holes increases layer by layer as it approaches the first cavity 130. That is, as the slurry to be filtered enters the first cavity 130 from the second cavity 140, the filtration fineness gradually increases, thereby gradually blocking impurities in the slurry and ensuring the filtration effect of the filter sleeve 300 on the slurry.

[0061] Example 3

[0062] This embodiment provides a battery slurry filtering device.

[0063] Figure 7 The internal structure diagram of the battery slurry filtering device provided by the third embodiment of the present invention is shown. Figure 7 The difference between this embodiment and the first embodiment is that the structure of the filter sleeve 300 provided in this embodiment is different from that in the first embodiment.

[0064] Specifically, in this embodiment, the filter cover 300 is open at one end and closed at the other. The filter cover 300 can be mounted on the sides and bottom of the support structure 200. The sides and base 220 of the support frame body 210 are each provided with a plurality of through-holes 230. The through-holes 230 in the base 220 also allow for the flow of slurry. This arrangement increases the effective filtration area of ​​the filter cover 300, further improving the filtration efficiency of the slurry.

[0065] More specifically, in this embodiment, the circumference of the upper end of the filter sleeve 300 is fastened to the support frame body 210 using a clamp structure 400 .

[0066] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Battery slurry filtering device, characterized in that: include: A device housing (100), wherein a feed port (110) and a discharge port (120) are respectively provided at opposite ends of the device housing (100); A support structure (200) and a filter cover (300), wherein the support structure (200) is disposed within the device housing (100), and the filter cover (300) is detachably disposed outside the support structure (200), a first cavity (130) is formed within the support structure (200), and a second cavity (140) is formed between the filter cover (300) and the device housing (100); The slurry can enter the device housing (100) from the feed port (110), and the slurry can be filtered from the first cavity (130) through the filter sleeve (300) to the second cavity (140), or from the second cavity (140) through the filter sleeve (300) to the first cavity (130).

2. The battery slurry filtering device according to claim 1, characterized in that: The support structure (200) comprises a support frame body (210) and a base (220), wherein the support frame body (210) is arranged opposite to the feed port (110) or the discharge port (120), and the base (220) is detachably connected to one end of the support frame body (210).

3. The battery slurry filtering device according to claim 1, characterized in that: The support structure (200) is provided with a bracket through hole (230), the first cavity (130) is connected to the second cavity (140) through the bracket through hole (230), and the aperture of the bracket through hole (230) is larger than the aperture of the filter hole of the filter sleeve (300).

4. The battery slurry filtering device according to claim 1, characterized in that: Multiple layers of filter holes are provided along the thickness direction of the filter mesh sleeve (300), and the number of the filter holes increases layer by layer in a direction away from the first cavity (130) or in a direction close to the first cavity (130).

5. The battery slurry filtering device according to claim 1, characterized in that: The device housing (100) includes a detachably connected top cover (150) and a housing body (160), the feed port (110) is opened in one of the top cover (150) and the housing body (160), the discharge port (120) is opened in the other, and the support structure (200) is connected to the top cover (150).

6. The battery slurry filtering device according to claim 1, characterized in that: The bottom of the device housing (100) is tilted to form a guide surface (170), and the lowest point of the guide surface (170) is provided with the feed port (110) or the discharge port (120).

7. The battery slurry filtering device according to claim 1, characterized in that: The discharge port (120) is connected to the first cavity (130), and the feed port (110) is connected to the second cavity (140). The second cavity (140) is provided with a slag discharge valve (180). The slag discharge valve (180) is spaced apart from the feed port (110). The slag discharge valve (180) can discharge impurities in the second cavity (140).

8. The battery slurry filtering device according to claim 1, characterized in that: The filter screen sleeve (300) has openings at both ends, and the filter screen sleeve (300) is arranged around the peripheral side of the support structure (200).

9. The battery slurry filtering device according to claim 1, characterized in that: The filter screen sleeve (300) has an open end and a closed end, and is sleeved on the circumferential side and bottom of the support structure (200).

10. The battery slurry filtering device according to claim 1, characterized in that: The battery slurry filtering device further comprises a liquid pump, the feed port (110) and the discharge port (120) are respectively provided with the liquid pump, and the slurry can flow between the first cavity (130) and the second cavity (140) under the action of the liquid pump.

Images