Dry stirring device and battery film forming equipment
By controlling the rotation of the mixing body during its descent, and combining this with a height sensor to detect the distance between the mixing body and the hopper, the problem of material compaction caused by the mixing body entering the hopper is solved, achieving a more efficient mixing effect and improving production efficiency and safety.
Patent Information
- Application Number
- CN202423267435.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In existing dry mixing devices, the material is compacted when the mixing element enters the hopper, making it difficult to mix fully, especially the material at the bottom of the hopper, resulting in low mixing efficiency.
By controlling the rotation of the agitator when it descends to a certain position, and combining this with the height sensor to sense the distance between the agitator and the hopper, the rotation speed and descent of the agitator are controlled synchronously to prevent the material from being compacted and ensure that the agitator easily enters the bottom of the hopper.
It improves mixing uniformity and efficiency, shortens mixing time, reduces resource consumption, and enhances production efficiency and safety.
Smart Images
Figure CN223747387U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of battery film forming, and particularly relates to a dry method stirring device and a battery film forming equipment. BACKGROUND
[0002] In the battery film forming technology, a wet method stirring machine is well known and widely used, and a conventional wet method stirring process needs to be pre-glued, consumes manpower and resources, and occupies a large amount of production time.
[0003] With the development of the battery industry, especially the increasing demand for high-performance and high-safety batteries, more efficient and more accurate material mixing technology is needed. The dry method stirring process has gradually become a more advanced technology in the lithium battery industry, which can simplify the process flow, improve production efficiency, and meet the needs of large-scale production.
[0004] In the existing dry method stirring device, the stirring body directly enters the barrel, which can cause the material to be compacted, so that the stirring body is difficult to fully insert, resulting in difficulty in stirring the material at the bottom of the barrel, and the compacted material needs to be fully dispersed and stirred for a longer time, thereby greatly reducing the stirring efficiency. UTILITY MODEL CONTENT
[0005] In order to solve the problems of the prior art, the application provides a dry method stirring device and a battery film forming equipment. By providing a height sensing part, when the stirring body is lowered to a certain position, the control part controls the stirring body to rotate, so that the stirring body starts to rotate during the process of entering the barrel, the stirring and lowering actions are performed at the same time, the phenomenon of material being compacted caused by the lowering of the stirring body is effectively avoided, the stirring body easily enters the bottom of the barrel, and the stirring uniformity is improved, thereby greatly improving the stirring efficiency.
[0006] The technical effects achieved by the application are achieved by the following aspects:
[0007] In a first aspect, the application provides a dry method stirring device, comprising
[0008] a material placing part comprising a barrel for placing materials to be stirred or materials that have been stirred;
[0009] a stirring part arranged opposite to the material placing part for stirring the materials in the barrel; and
[0010] a control part connected with the stirring part for acquiring the state of the stirring part and controlling the action of the stirring part;
[0011] The stirring part comprises:
[0012] A cover body is arranged above the material barrel and can be in contact with the material barrel to form a sealed area in the material barrel;
[0013] A stirring body is arranged corresponding to the connection of the material barrel and the cover body and is electrically connected with the control component to control the rotating speed of the stirring body by the control component;
[0014] A height sensing member is arranged at the same level with the cover body and is used to sense the distance between the cover body and the material barrel; and
[0015] A lifting body is connected with the cover body and is used to drive the cover body to perform lifting action to insert or remove the stirring body into or out of the material barrel;
[0016] The control component acquires the information sensed by the height sensing member and controls the rotating speed of the stirring body.
[0017] In some implementations, the material placing component further comprises a driving shaft which is drivingly connected with the material barrel and is electrically connected with the control component, and the control component controls the driving shaft to rotate the material barrel.
[0018] In some implementations, the material placing component further comprises a cover shell which surrounds the material barrel.
[0019] In some implementations, the material placing component further comprises a switch detector which is connected to two sides of the cover shell and is electrically connected with the control component to monitor whether the cover shell is closed;
[0020] The control component acquires the detection signal of the switch detector and controls the start and stop of the material barrel.
[0021] In some implementations, the material placing component further comprises an alarm member which is connected with the switch detector; the alarm member is used to start warning when the switch detector detects that the cover shell is not closed.
[0022] In some implementations, the stirring component further comprises a gravity sensor which is connected to the lower end of the lifting body.
[0023] The control component acquires the sensing signal of the gravity sensor and controls the start and stop of the lifting body.
[0024] In some implementations, the height sensing member is an ultrasonic sensor.
[0025] In some implementations, the lifting body comprises an electric cylinder, one end of the electric cylinder is connected with the cover body, and the driving end of the electric cylinder is fixedly connected with the gravity sensor.
[0026] In some implementations, the control component comprises a PLC controller for receiving various signals and feeding back corresponding execution information.
[0027] In a second aspect, the application provides a battery film forming device, comprising a roll pressing device and a dry mixing device, the roll pressing device is used for rolling the electrode material stirred by the dry mixing device into a film.
[0028] The dry mixing device is the dry mixing device as described above.
[0029] In summary, the application has at least the following advantages:
[0030] The dry mixing device provided by the application can effectively avoid the compaction of the material, facilitate the easy entry of the stirring body into the bottom of the barrel, and further ensure the uniformity of the stirring. Since the material is not compacted, the stirring body can quickly stir the material, which can correspondingly reduce the time spent on stirring and greatly improve the stirring efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 Figure 1 is a structural schematic diagram of the dry mixing device in Embodiment 1 of the application.
[0032] Figure 2 Figure 2 is a perspective structural schematic diagram of the dry mixing device in Embodiment 2 of the application.
[0033] Figure 3 Figure 3 is a structural schematic diagram of the battery film forming device in Embodiment 1 of the application.
[0034] Markings in the figure:
[0035] 100, dry mixing device, 1, material placing component, 11, barrel, 12, driving shaft, 13, cover, 14, switch detector; 2, stirring component, 21, cover body, 22, stirring body, 23, height sensing piece, 24, lifting body, 25, gravity sensor; 200, roll pressing device; 300, battery film forming device. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. The described embodiments are part of the embodiments of the application, rather than all the embodiments of the application.
[0037] Therefore, the following detailed description of implementations of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected implementations of the application. Based on the implementations in the present application, all other implementations obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.
[0038] Embodiment 1:
[0039] Please refer to the accompanying Figure 1 The dry mixing device comprises a material placing component 1, a mixing component 2 and a control component.
[0040] The material placing component 1 comprises a material barrel 11 for placing materials to be mixed or materials after mixing.
[0041] The control component is connected with the mixing component 2, and is used for acquiring the state of the mixing component 2 and controlling the action of the mixing component 2. Specifically, the control component comprises a PLC controller for receiving various signals and feeding back corresponding execution information. Before the mixing action, the descending position of the mixing component 2, the corresponding rotating speed of the mixing body 22 and the mixing time are preset, so as to realize sufficient mixing. The control component sets corresponding parameters of the steps on the man-machine interface, and saves corresponding formulas into the PLC controller according to different battery materials and different process requirements. Through parameter formula calling, the operator can quickly select appropriate parameter combination from the pre-set formula library, without the need to reset these parameters every time. Such design reduces the downtime and adjustment time, thereby ensuring the continuity of production.
[0042] The mixing component 2 is oppositely arranged with the material placing component 1, and is used for mixing the materials in the material barrel 11. Specifically, the mixing component 2 comprises a cover body 21, a mixing body 22, a height sensing piece 23 and a lifting body 24.
[0043] The cover body 21 is arranged above the material barrel 11 and can be in contact with the material barrel 11, so that a sealed area is formed in the material barrel 11. The sealed area can withstand high-speed mixing, improves the mixing sufficiency, and can avoid the materials from jumping out of the material barrel 11 during the mixing process, thereby ensuring the tidiness during the mixing process.
[0044] The mixing body 22 is connected with the cover body 21 corresponding to the material barrel 11, and is electrically connected with the control component, so that the control component controls the rotating speed of the mixing body 22.
[0045] The height sensor 23 is arranged at the same level with the cover 21, and is used to sense the distance between the cover 21 and the barrel 11. Preferably, the height sensor 23 is an ultrasonic sensor, so that the position of the stirring body 22 inserted into the barrel 11 can be clearly obtained. After the control component obtains the information sensed by the height sensor 23, the rotating speed of the stirring body 22 is controlled correspondingly, so as to avoid the compaction of the material during the descending process of the stirring body 22.
[0046] The lifting body 24 is connected with the cover 21, and is used to drive the cover 21 to perform the lifting action, so as to insert or remove the stirring body 22 from the barrel 11. Specifically, the lifting body 24 comprises an electric cylinder, one end of the electric cylinder is connected with the cover 21, and the driving end of the electric cylinder is fixedly connected with the gravity sensor 25.
[0047] After the dry stirring device 100 in the embodiment is started to perform the stirring action, an initial stage is entered, the lifting body 24 drives the cover 21 to descend towards the barrel 11. When the distance between the cover 21 and the barrel 11 sensed by the height sensor 23 is the preset value, the position signal sensed by the height sensor 23 is transmitted to the control component. After the control component obtains the signal, the starting signal is sent to the stirring body 22, and the stirring body 22 is controlled to perform the corresponding rotating speed, so as to avoid the compaction of the material during the descending process of the stirring body 22, facilitate the stirring body 22 to easily enter the bottom of the barrel 11, and improve the stirring uniformity.
[0048] Subsequently, a pre-rotation stage is entered, the cover 21 descends to the bottom of the barrel 11, the control component controls the stirring body 22 to rotate at the set rotating speed for 1 minute. Through the short-time pre-rotation, whether the stirring body 22 rotates abnormally can be observed, and the smoothness of the subsequent stirring is ensured.
[0049] Subsequently, a pre-mixing stage is entered, the control component controls the stirring body 22 to rotate at the set rotating speed for the corresponding time, so as to realize the mutual contact and sufficient mixing of different battery materials, and make the materials uniformly distributed to a certain extent until the end of the stage.
[0050] Further, a homogenization stage is entered, the control component controls the stirring body 22 to rotate at the set rotating speed for the corresponding time, so as to realize the stronger stirring purpose of the materials in the stage, and make the materials fully mixed in the micro level.
[0051] Finally, a fiberization stage is entered, the control component controls the stirring body 22 to continuously rotate at the set rotating speed for the corresponding time, so as to enhance the binding force and stability of the materials, and effectively increase the mechanical strength and ion conduction performance of the materials.
[0052] In the structure, the stirring and the descending are simultaneously performed, so that the material is not compacted, the stirring body 22 can easily enter the bottom of the barrel 11, and the uniformity of the stirring is ensured. Since the material is not compacted, the stirring body 22 can quickly stir the material, the time for the stirring is reduced, and the stirring efficiency is greatly improved.
[0053] In addition, compared with the wet stirring, the dry stirring device 100 in the embodiment does not need to prepare glue solution and other steps, and the intermediate link and waiting time are also saved, so that the time of the whole stirring process is significantly shortened, the original stirring time of 2 hours is reduced to 0.5 hours, the production efficiency is effectively improved, the use of solvent is reduced, the resources are saved, the production cost is reduced, and the pressure of wastewater treatment is reduced. In the structure, all the powders are mixed by the dry stirring once, so that the manpower and material resources are effectively saved.
[0054] Embodiment 2:
[0055] The difference between the embodiment and the embodiment 1 is that, as shown in Figure 2 The material placing component 1 in the embodiment further includes a driving shaft 12, the driving shaft 12 is drivingly connected with the barrel 11, and the driving shaft 12 is electrically connected with a control component. The control component controls the driving shaft 12 to rotate the barrel 11.
[0056] Through the arrangement, when the height sensor 23 senses that the stirring body 22 reaches the preset position, the control component controls the driving shaft 12 to rotate the barrel 11, so that the stirring body 22 and the barrel 11 can rotate, the stirring degree of the material is further improved, the stirring is more uniform, the stirring time is shortened, and the stirring efficiency is improved.
[0057] In some embodiments, the material placing component 1 further includes a cover 13, and the cover 13 surrounds the barrel 11. Through the arrangement, when the barrel 11 rotates, the barrel 11 is surrounded by the cover 13, so that the rotation of the driving shaft 12 is safe, the operation safety is improved, the rotation of the barrel 11 is smooth, and the service life of the barrel 11 and the driving shaft 12 is maintained.
[0058] In some embodiments, the material placing component 1 further includes a switch detector 14, the switch detector 14 is connected to two sides of the cover 13 and is electrically connected with a control component, and is used for monitoring whether the cover 13 is closed. The control component acquires a detection signal of the switch detector 14 and controls the start and stop of the barrel 11. Preferably, the switch detector 14 is a high-precision switch detector 14, which can accurately detect whether the cover 13 is tightly closed. Through the arrangement, when the switch detector 14 detects that the cover 13 is not tightly closed, the control component acquires the signal that the cover 13 is not tightly closed, and controls the barrel 11 to stop, so that the safety of the rotation of the barrel 11 is ensured.
[0059] In some embodiments, the material placing component 1 further comprises an alarm connected with the switch detector 14; the alarm is used to start the warning when the switch detector 14 detects that the cover 13 is not closed. Preferably, the alarm is realized by any way that can warn, such as warning light, warning bell or the like. In this way, when the switch detector 14 detects that the cover 13 is not closed, the control component obtains the signal of not being closed, and the control component also starts the alarm, thereby reminding the operator that the cover 13 is not closed and the material barrel 11 is stopped, so that the operator can quickly know the fault and maintain and manage, and the time for discovering the problem is effectively shortened.
[0060] In some embodiments, the stirring component 2 further comprises a gravity sensor 25 connected to the lower end of the lifting body 24; wherein the control component obtains the sensing signal of the gravity sensor 25 and controls the start and stop of the lifting body 24. Preferably, the gravity sensor 25 is a high-precision gravity sensor 25. In this way, once the overload, i.e. the foreign matter, enters between the cover 21 and the machine table or the material barrel 11, the force generated by the lifting body 24 will change, and the control component can prevent the lifting body 24 from moving or force it to stop during operation and send an alarm to inform the relevant personnel to handle, which can solve the danger of pinching the hand and improve the safety of operation. In addition, the design in this embodiment enables the cover plate to perform the lifting action in any case.
[0061] The specific alarm feedback process is as follows: after stopping, press the start button, i.e. press the cover body lowering buttons with both hands, so that the cover body is lowered, no fault is detected, and no alarm is given, then the stirring body runs to the set position, pre-rotates at low speed, and then starts to run at the set time and speed according to the set steps. If a fault is detected, stop and handle.
[0062] Embodiment 3:
[0063] This embodiment is based on the above-mentioned embodiments, please refer to Figure 3 , provides a battery film forming equipment 300, comprising a roll pressing device 200 and a dry stirring device 100 arranged independently, the roll pressing device 200 is used for rolling the electrode material stirred by the dry stirring device 100 into a film; wherein the dry stirring device 100 is the dry stirring device 100 as described above.
[0064] The battery film forming equipment 300 in this embodiment adopts the dry stirring device 100 to efficiently mix the electrode material, which can fully mix the active substances, conductive agents, adhesive agents and other dry powder materials in the positive and negative electrode materials, and uniformly distribute each component, thereby improving the battery film forming quality and ensuring the consistency of the battery performance, and at the same time, improving the battery use efficiency, the battery solid content and the battery energy density, and obtaining 100% solid content.
[0065] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0066] In the description of the application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0067] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0068] In this application, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.
[0069] Although the description of the application is combined with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made by those skilled in the art according to the above content. Therefore, all such alternatives, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A dry mixing device, characterized by, The application relates to a material placing component (1) comprising a material barrel (11) for placing material to be stirred or having completed stirring; a stirring component (2) arranged opposite to the material placing component (1) and used for stirring the material in the material barrel (11); and a control component connected with the stirring component (2) and used for acquiring the state of the stirring component (2) and controlling the action of the stirring component (2); The stirring component (2) comprises: a cover (21) arranged above the material barrel (11) and capable of contacting the material barrel (11) to form a sealed area in the material barrel (11); a stirring body (22) connected with the cover (21) and corresponding to the material barrel (11) and electrically connected with the control component so that the control component controls the rotating speed of the stirring body (22); a height sensing part (23) arranged at the same level as the cover (21) and used for sensing the distance between the cover (21) and the material barrel (11); and a lifting body (24) connected with the cover (21) and used for driving the cover (21) to perform lifting action so that the stirring body (22) is inserted into or removed from the material barrel (11); wherein the control component acquires the information sensed by the height sensing part (23) and controls the rotating speed of the stirring body (22) correspondingly. The material placing component (1) further comprises a driving shaft (12) drivingly connected with the material barrel (11) and electrically connected with the control component, and the control component controls the driving shaft (12) to rotate the material barrel (11).
2. The dry-stirring apparatus according to claim 1, characterized by The material placing component (1) further comprises a cover shell (13) surrounding the material barrel (11).
3. The dry-stirring apparatus of claim 2, wherein The material placing component (1) further comprises a switch detector (14) connected to the two sides of the cover shell (13) and electrically connected with the control component and used for monitoring whether the cover shell (13) is closed; 4. The dry-stirring apparatus according to claim 3, characterized in that wherein the control component acquires the detection signal of the switch detector (14) and controls the start and stop of the material barrel (11). The material placing component (1) further comprises an alarm part connected with the switch detector (14) and used for starting the alarm when the switch detector (14) detects that the cover shell (13) is not closed.
5. The dry-stirring apparatus of claim 4, wherein The stirring component (2) further comprises a gravity sensor (25) connected to the lower end of the lifting body (24); 6. The dry-stirring apparatus of claim 1, wherein wherein the control component acquires the sensing signal of the gravity sensor (25) and controls the start and stop of the lifting body (24). The height sensing part (23) is an ultrasonic sensor.
7. The dry-stirring apparatus of claim 1, wherein The lifting body (24) comprises an electric cylinder, one end of the electric cylinder is connected with the cover (21), and the driving end of the electric cylinder is fixedly connected with the gravity sensor (25).
8. The dry-stirring apparatus of claim 6, wherein The control component comprises a PLC controller used for receiving various signals and feeding back corresponding execution information.
9. The dry-stirring apparatus of claim 1, wherein 10. A battery film forming apparatus characterized by comprising: The application relates to a device for producing a film of electrode material, comprising a roll press (200) for rolling the electrode material stirred by a dry stirrer (100) into a film, and the dry stirrer (100). The dry stirrer (100) is as claimed in any one of claims 1 to 9.