Lithium ion battery slurry stirring equipment

Abstract

The utility model relates to lithium ion battery slurry stirring equipment which comprises a driving assembly, a transmission assembly and a stirring assembly, and the driving assembly comprises a driving motor; the transmission assembly is connected with the driving assembly and comprises a conical turntable, a friction wheel and an adjusting shifting fork, the conical turntable is in transmission connection with the driving motor, the friction wheel is in friction contact with the conical turntable, and the adjusting shifting fork can stir the friction wheel along the conical surface of the conical turntable; the stirring assembly is connected with the transmission assembly. By arranging the conical turntable, the friction wheel and the adjusting shifting fork in the transmission assembly, the friction wheel can be shifted by virtue of the adjusting shifting fork, so that the contact position of the friction wheel and the conical turntable is changed, stepless adjustment of the rotating speed is realized, and the rotating speed is conveniently changed at any time according to different physicochemical properties of battery slurry; and a matched rotating speed meeting stirring requirements is provided.

Description

Technical Field

[0001] This application relates to the field of lithium-ion battery slurry manufacturing technology, and more specifically, to a lithium-ion battery slurry stirring device. Background Technology

[0002] The electrode materials of lithium-ion batteries consist of three main components: active material, conductive agent, and binder. Active material accounts for the vast majority of the total weight, typically between 90% and 98%, while conductive agent and binder account for a smaller proportion, generally between 1% and 5%. Electrode slurry is essentially a suspension of solid particles in a liquid. Various forces exist between the particles in this suspension, requiring agitation equipment to achieve uniform mixing and form a high-quality slurry with consistent properties. Existing technologies disclose some equipment for stirring lithium-ion battery slurries. For example, Chinese Patent 201810552973.4 discloses an electrode slurry stirring device for lithium-ion battery production, which uses a stirrer to achieve uniform mixing of the slurry. However, existing electrode slurry stirring equipment lacks speed adjustment capabilities and cannot provide a matching stirring speed to the physicochemical properties of lithium-ion electrode slurries with different compositions, formulations, and proportions. Utility Model Content

[0003] This application provides a lithium-ion battery slurry stirring device to solve the problem that existing lithium-ion battery slurry stirring devices lack speed regulation capability and cannot adapt to different electrode slurry formulations to provide a matching stirring speed.

[0004] A lithium-ion battery slurry stirring device according to this application includes:

[0005] The drive component includes a drive motor;

[0006] The transmission assembly, which is connected to the drive assembly, includes a conical turntable, a friction wheel, and an adjusting fork. The conical turntable is connected to the drive motor, the friction wheel is in frictional contact with the conical turntable, and the adjusting fork can move the friction wheel along the conical surface of the conical turntable.

[0007] The stirring assembly is connected to the transmission assembly.

[0008] In some embodiments, the transmission assembly further includes: a first worm wheel and a first worm, the first worm wheel being meshed with the first worm; a friction wheel being slidably mounted on the shaft of the first worm and capable of sliding along the axial direction of the first worm; and a stirring assembly being connected to the first worm wheel and rotating with the first worm wheel.

[0009] In some embodiments, an axial keyway is provided on the shaft of the first worm gear, and a flat key is provided in the axial keyway. The friction wheel is clearance-fitted with the flat key and is slidably mounted on the shaft of the first worm gear via the flat key.

[0010] In some embodiments, the transmission assembly further includes a lead screw pair, which includes a threaded lead screw and a slider. The lead screw is arranged parallel to the first worm, and an adjusting fork is mounted on the slider. The friction wheel is provided with a groove, and the end of the adjusting fork extends into the groove to cooperate with the friction wheel.

[0011] In some embodiments, the transmission assembly further includes: a second worm gear and a second worm, the second worm gear being meshed with the second worm and sleeved on the lead screw to drive the lead screw to rotate coaxially.

[0012] In some embodiments, the first worm gear is rotatably mounted at both ends via a first horizontal bearing seat, and the lead screw is rotatably mounted at both ends via a second horizontal bearing seat.

[0013] In some embodiments, the transmission assembly further includes: a first bevel gear and a second bevel gear, the first bevel gear being vertically arranged and the second bevel gear being inclined and meshing with the first bevel gear; a conical turntable being coaxially connected to the second bevel gear and being connected to the drive motor via the second bevel gear and the first bevel gear.

[0014] In some embodiments, the first bevel gear is rotatably mounted via a vertical bearing housing, and the conical turntable is rotatably mounted via an inclined bearing housing.

[0015] In some embodiments, the transmission assembly further includes a coupling that connects the output end of the drive motor and the shaft of the first bevel gear.

[0016] In some embodiments, the conical turntable is machined from stainless steel, and the outer edge of the friction wheel is covered with a wear-resistant rubber layer.

[0017] According to the technical solution of this application, a lithium-ion battery slurry stirring device includes: a drive assembly, a transmission assembly, and a stirring assembly. The drive assembly includes a drive motor; the transmission assembly is connected to the drive assembly and includes a conical turntable, a friction wheel, and an adjusting fork. The conical turntable is driven by the drive motor, the friction wheel is in frictional contact with the conical turntable, and the adjusting fork can move the friction wheel along the conical surface of the conical turntable; the stirring assembly is connected to the transmission assembly. This application, by setting a conical turntable, a friction wheel, and an adjusting fork in the transmission assembly, allows the adjusting fork to move the friction wheel, changing the contact position between the friction wheel and the conical turntable, thereby achieving stepless speed adjustment. This facilitates changing the speed at any time according to the different physicochemical properties of the battery slurry, providing a matching speed to meet the stirring requirements. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the assembly structure of a lithium-ion battery slurry stirring device according to an embodiment of this application is shown;

[0021] Figure 2 A schematic diagram of the stirring component structure of a lithium-ion battery slurry stirring device according to an embodiment of this application is shown.

[0022] The above figures include the following reference numerals:

[0023] 100. Drive assembly; 101. Drive motor; 102. Mounting base plate; 200. Transmission assembly; 201. Conical turntable; 202. Friction wheel; 203. Adjusting fork; 204. First worm gear; 205. First worm; 206. Lead screw; 207. Second worm gear; 208. Second worm; 209. First horizontal bearing seat; 210. Second horizontal bearing seat; 211. First bevel gear; 212. Second bevel gear; 213. Vertical bearing seat; 214. Inclined bearing seat; 215. Coupling; 300. Stirring assembly; 301. Stirrer; 302. Stirring container. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Figure 1 and Figure 2 An embodiment of the lithium-ion battery slurry mixing device of this application is illustrated schematically.

[0030] like Figure 1 and Figure 2As shown, this application discloses a lithium-ion battery slurry stirring device, including: a drive assembly 100, which includes a drive motor 101; a transmission assembly 200, connected to the drive assembly 100, including a conical turntable 201, a friction wheel 202, and an adjusting fork 203; the conical turntable 201 is driveably connected to the drive motor 101, the friction wheel 202 is in frictional contact with the conical turntable 201, and the adjusting fork 203 can move the friction wheel 202 along the conical surface of the conical turntable 201; and a stirring assembly 300, connected to the transmission assembly 200.

[0031] Through the above structural design, this embodiment of the application constructs a stepless speed regulation foundation by setting a conical turntable 201 and a friction wheel 202 in the transmission component 200 and utilizing their frictional transmission. Based on this, by adjusting the shift fork 203 to move the friction wheel 202, the friction wheel 202 contacts the conical surfaces of the conical turntable 201 with different diameters, thereby achieving stepless speed regulation. This embodiment of the application has a simple structure, is easy to install, use, and maintain, and allows for easy adjustment of the speed according to the different physicochemical properties of the battery slurry, providing a matching speed to meet the stirring requirements, overcoming the intermolecular adhesion forces between substances in the slurry, and achieving uniform stirring of the slurry.

[0032] refer to Figure 1 As shown, when the friction wheel 202 moves to the leftmost end of the conical turntable 201, the contact surface diameter between the two is the largest and the linear velocity is the highest, thus obtaining the highest stirring speed, which is suitable for battery slurries with low viscosity. When the friction wheel 202 moves to the rightmost end of the conical turntable 201, the contact surface diameter between the two is the smallest and the linear velocity is the lowest, thus obtaining the lowest stirring speed, which is suitable for battery slurries with high viscosity.

[0033] In some embodiments of this application, such as Figure 1 As shown, the transmission assembly 200 further includes a first worm gear 204 and a first worm 205, with the first worm gear 204 meshing with the first worm 205. A friction wheel 202 is slidably mounted on the shaft of the first worm 205 and can slide along the axial direction of the first worm 205. The stirring assembly 300 is connected to the first worm gear 204 and rotates with it. Therefore, in this embodiment, the rotation of the friction wheel 202 drives the first worm 205 to rotate, which in turn drives the first worm gear 204 to rotate. The rotation of the first worm gear 204 then drives the stirring assembly 300, achieving stirring of the battery slurry. Figure 2As shown, the stirring assembly 300 includes a stirrer 301 and a stirring container 302. The stirrer 301 can be of various forms, such as a paddle or an anchor frame, and is used to contact the battery slurry for stirring. The stirring container 302 is used to hold the battery slurry to be stirred. In this embodiment, a first worm gear 204 and a first worm 205 are used to convert the driving force of the friction wheel 202 into the rotational force of the stirrer 301. The staggered installation of the worm gear and worm makes the entire device more compact, and the worm gear mechanism has a larger transmission ratio, enabling it to transmit greater torque. This effectively overcomes intermolecular forces and is suitable for stirring battery slurry. Simultaneously, the first worm gear 204 and the first worm 205 are self-locking structures, providing a self-locking function for the rotation of the stirrer 301.

[0034] In some embodiments of this application, such as Figure 1 As shown, an axial keyway is provided on the shaft of the first worm 205, and a flat key is provided in the axial keyway. The friction wheel 202 is clearance-fitted with the flat key and is slidably mounted on the shaft of the worm through the flat key. In this embodiment, the friction wheel 202 and the shaft of the first worm 205 are connected by the flat key, and the two rotate synchronously. The rotation of the friction wheel 202 will drive the first worm 205 to rotate, which in turn drives the first worm wheel 204 to rotate, thereby driving the stirrer 301 mounted on the shaft of the first worm wheel 204 to achieve stirring. The friction wheel 202 is clearance-fitted with the flat key, so the friction wheel 202 can slide axially relative to the first worm 205. By sliding the friction wheel 202 to different positions of the conical turntable 201, the stirring speed can be changed, realizing stepless adjustment of the stirring speed.

[0035] In some embodiments of this application, such as Figure 1 As shown, the transmission assembly 200 also includes a lead screw pair, which includes a threaded lead screw 206 and a slider. The lead screw 206 is arranged parallel to the first worm gear 205, and the adjusting fork 203 is mounted on the slider. The friction wheel 202 is provided with a groove, and the end of the adjusting fork 203 extends into the groove and engages with the friction wheel 202. Therefore, when speed adjustment is required, it is only necessary to rotate the lead screw 206 to move the adjusting fork 203 axially relative to the lead screw 206, which can move the friction wheel 202 and change the friction contact position between the friction wheel 202 and the conical turntable 201, thereby achieving stepless speed adjustment.

[0036] In some embodiments of this application, such as Figure 1As shown, the transmission assembly 200 further includes a second worm gear 207 and a second worm 208. The second worm gear 207 is meshed with the second worm 208, and the second worm gear 207 is sleeved on the lead screw 206, driving the lead screw 206 to rotate coaxially. The cooperation between the second worm gear 207 and the second worm 208 allows for a compact drive structure for the adjusting fork 203, facilitating on-site layout. Furthermore, in some preferred embodiments of this application, the second worm gear 207 and the second worm 208 are self-locking structures, satisfying the self-locking condition that the friction angle of the worm is less than the helix angle of the worm. This enables a self-locking function, thereby more reliably and stably adjusting the position of the adjusting fork 203 and maintaining a stable and reliable matching speed. It is understood that the force driving the second worm 208 can come from manual drive or be provided by an automatically controlled drive device such as a servo motor.

[0037] In some embodiments of this application, such as Figure 1 As shown, the first worm gear 205 is rotatably mounted at both ends via the first horizontal bearing seat 209, and the lead screw 206 is rotatably mounted at both ends via the second horizontal bearing seat 210. Mounting the first worm gear 205 and the lead screw 206 via bearings ensures smooth rotation, stable installation, and reduces frictional resistance.

[0038] In some embodiments of this application, such as Figure 1 As shown, the transmission assembly 200 further includes a first bevel gear 211 and a second bevel gear 212. The first bevel gear 211 is vertically arranged, and the second bevel gear 212 is inclined and meshes with the first bevel gear 211. The conical turntable 201 is coaxially connected to the second bevel gear 212, and is transmitted to the drive motor 101 through the second bevel gear 212 and the first bevel gear 211. Through the inclined transmission of the first bevel gear 211 and the second bevel gear 212, the driving force for vertical rotation can be converted to the desired inclined direction, realizing the transmission connection of the conical turntable 201. Moreover, the bevel gear meshing method also makes the torque output more stable and reliable.

[0039] In some embodiments of this application, such as Figure 1 As shown, the first bevel gear 211 is rotatably mounted via a vertical bearing housing 213. The vertical bearing housing 213 can reduce vibrations caused by the output torque of the drive assembly 100, protecting the equipment and ensuring stable operation. The conical turntable 201 is rotatably mounted via an inclined bearing housing 214 to stabilize the conical turntable 201 and reduce rotational resistance.

[0040] In some embodiments of this application, such as Figure 1As shown, the transmission assembly 200 also includes a coupling 215, which connects the output end of the drive motor 101 and the shaft of the first bevel gear 211 to achieve torque output from the drive motor 101. The drive motor 101 can be an inexpensive, ordinary three-phase motor, mounted via a mounting base. Since this embodiment has designed a stepless speed regulation mechanism for the conical turntable 201 and the friction wheel 202, the motor does not need to be a costly variable frequency drive motor, significantly reducing equipment costs. Furthermore, the stepless speed regulation of this embodiment is more flexible and convenient to use.

[0041] In some embodiments of this application, the conical turntable 201 is machined from stainless steel, and the outer edge of the friction wheel 202 is covered with a wear-resistant rubber layer. Specifically, the conical turntable 201 is made of 201 stainless steel and then stress-relieved by welding. The outer edge of the friction wheel 202 is covered with a 7-8mm thick wear-resistant rubber layer with a Shore hardness of HS70-90 to meet the requirements for compression resistance and wear resistance under long-term working conditions.

[0042] Combination Figure 1 and Figure 2 The working principle of this application is explained as follows:

[0043] During stirring, an external force is applied to the second worm 208, which in turn drives the lead screw 206 to rotate forward or backward via the second worm wheel 207. This allows for left and right movement control of the adjusting fork 203 on the lead screw 206, thereby changing the contact position between the friction wheel 202 and the conical turntable 201. Since the friction wheel 202 slides left and right on the shaft of the first worm 205 and closely rubs against the conical turntable 201, it can provide corresponding output torque and speed at different positions. For example, the fastest speed is obtained when the friction wheel 202 slides to the leftmost end of the conical turntable 201, and the lowest speed and maximum torque are obtained when the friction wheel 202 slides to the rightmost end of the conical turntable 201. Therefore, this embodiment of the application can achieve stepless speed adjustment, is convenient to use, has a simple structure, and is low in cost.

[0044] In summary, the lithium-ion battery slurry stirring device of this application includes: a drive assembly, a transmission assembly, and a stirring assembly. The drive assembly includes a drive motor; the transmission assembly is connected to the drive assembly and includes a conical turntable, a friction wheel, and an adjusting fork. The conical turntable is driven by the drive motor, the friction wheel is in frictional contact with the conical turntable, and the adjusting fork can move the friction wheel along the conical surface of the conical turntable; the stirring assembly is connected to the transmission assembly. By setting a conical turntable, a friction wheel, and an adjusting fork in the transmission assembly, this application can change the contact position between the friction wheel and the conical turntable by moving the friction wheel with the adjusting fork, thereby achieving stepless speed adjustment. This allows for easy adjustment of the speed according to the different physicochemical properties of the battery slurry, providing a matching speed that meets the stirring requirements.

[0045] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lithium ion battery slurry stirring apparatus, characterized by, The utility model relates to a driving assembly (100) comprising a driving motor (101), a transmission assembly (200) connected to the driving assembly (100), comprising a conical rotating disc (201), a friction wheel (202) and an adjusting fork (203), the conical rotating disc (201) being in transmission connection with the driving motor (101), the friction wheel (202) being in frictional contact with the conical rotating disc (201), the adjusting fork (203) being capable of moving the friction wheel (202) along the taper surface of the conical rotating disc (201), and a stirring assembly (300) connected to the transmission assembly (200). The transmission assembly (200) further comprises a first worm gear (204) and a first worm (205), the first worm gear (204) being in meshing connection with the first worm (205), the friction wheel (202) being slidably mounted on the shaft of the first worm (205) and being capable of sliding along the axial direction of the first worm (205), and the stirring assembly (300) being connected to the first worm gear (204) and rotating with the first worm gear (204). An axial key groove is provided on the shaft of the first worm (205), and a flat key is arranged in the axial key groove, the friction wheel (202) being in clearance fit with the flat key and being slidably mounted on the shaft of the first worm (205) through the flat key. The transmission assembly (200) further comprises a screw pair, the screw pair comprising a screw (206) and a sliding block in threaded connection, the screw (206) being arranged in parallel with the first worm (205), and the adjusting fork (203) being mounted on the sliding block, the friction wheel (202) being provided with a clamping groove, and the end of the adjusting fork (203) extending into the clamping groove and being in fit with the friction wheel (202).

2. The lithium-ion battery slurry stirring apparatus of claim 1, wherein, The transmission assembly (200) further comprises a second worm gear (207) and a second worm (208), the second worm gear (207) being in meshing connection with the second worm (208), the second worm gear (207) being sleeved on the screw (206) and coaxially rotating with the screw (206).

3. The lithium-ion battery slurry stirring apparatus of claim 2, wherein, The first worm (205) is rotatably mounted at both ends through a first horizontal bearing seat (209), and the screw (206) is rotatably mounted at both ends through a second horizontal bearing seat (210).

4. The lithium-ion battery slurry stirring apparatus of claim 2, wherein, The transmission assembly (200) further comprises a first bevel gear (211) and a second bevel gear (212), the first bevel gear (211) being arranged vertically, the second bevel gear (212) being arranged obliquely and being in meshing connection with the first bevel gear (211), the conical rotating disc (201) being coaxially connected with the second bevel gear (212) and being in transmission connection with the driving motor (101) through the second bevel gear (212) and the first bevel gear (211).

5. The lithium-ion battery slurry stirring apparatus of claim 4, wherein, The first bevel gear (211) is rotatably mounted through a vertical bearing seat (213), and the conical rotating disc (201) is rotatably mounted through an oblique bearing seat (214).

6. The lithium-ion battery slurry stirring apparatus of claim 4, wherein, ​ 7. The lithium-ion battery slurry stirring apparatus of claim 1, wherein, ​ 8. The lithium-ion battery slurry stirring apparatus of claim 7, wherein, ​ 9. The lithium-ion battery slurry stirring apparatus of claim 7, wherein, The transmission assembly (200) further comprises a shaft coupling (215) connecting the output end of the driving motor (101) and the shaft of the first bevel gear (211).

10. The lithium-ion battery slurry stirring apparatus according to any one of claims 1 to 9, characterized in that, The conical rotating disc (201) is made of stainless steel, and the outer edge of the friction wheel (202) is wrapped with a wear-resistant rubber layer.

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