Slurry stirring device and battery

Abstract

The utility model relates to the technical field of batteries, in particular to a slurry stirring device and a battery, which comprises a rotating cylinder body, a supporting pipe body and a flexible film pressure sensor, the rotating cylinder is hollow in the axial direction and can rotate around the axis of the rotating cylinder. The supporting pipe body is coaxially arranged in the rotating cylinder body, a mounting gap is formed between the pipe side wall surface of the supporting pipe body and the cylinder inner wall surface of the rotating cylinder body, and a sensing area is arranged on the pipe side wall surface of the supporting pipe body; the flexible thin film pressure sensor is arranged in the mounting gap, the flexible thin film pressure sensor covers the sensing area, and the flexible thin film pressure sensor is used for obtaining the deformation degree and direction of a part connected with the rotating cylinder when the flexible thin film pressure sensor is subjected to pressure applied by the rotating cylinder. According to the slurry stirring device and the battery disclosed by the utility model, the rotating cylinder body, the supporting pipe body and the flexible film pressure sensor are arranged, so that the stability and the production efficiency of the slurry stirring device in the production process are effectively improved, and the production cost is reduced.

Description

Technical Field

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

[0002] As a new energy source, lithium battery has become a hot topic for research in industry and academia. Among them, the homogenization process of positive and negative electrodes is one of the difficulties in battery manufacturing. Usually, the homogenization process of positive and negative electrodes includes dry mixing, kneading and dispersion, so that the active material, conductive agent, adhesive, etc. are evenly dispersed in the solvent according to a certain mass ratio to form a stable slurry with a certain viscosity, which is used for coating the electrode and preparing for subsequent film production.

[0003] In the positive and negative electrode homogenization process, the slurry needs to be stirred by the stirring parts of the slurry stirring device. For example, low-speed stirring is performed by using a multi-paddle, twisted or frame-type stirring paddle to make the slurry move in the height direction or horizontal direction in the mixing cylinder, thereby achieving the ideal mixing effect in a shorter time. Alternatively, high-speed stirring is performed by a tooth-type dispersion disk to subject the slurry to strong shearing and dispersion. In addition, a scraping slurry is also provided to scrape off the slurry attached to the inner wall of the mixing cylinder.

[0004] During the stirring process, a certain shear force is often required for the slurry stirring device. Since the kneading solid content of the slurry is very high, the dispersion process has a large resistance to the stirring paddle. If the resistance is too large for a long time, the stirring parts will be deformed and touch the inner wall of the mixing cylinder, causing irreversible damage. This will reduce the stability of the stirring device, reduce production efficiency, and increase production costs. Utility Model Content

[0005] To this end, the technical problem to be solved by the utility model is to overcome the deformation and wall collision of the stirring parts during the battery homogenization process, reduce the stability and production efficiency of the device, and increase the production cost. A slurry stirring device and a battery are provided to effectively warn of deformation, improve production stability and production efficiency, and reduce production costs.

[0006] The utility model provides a slurry stirring device, comprising a rotating cylinder, which is hollow along the axial direction and can rotate around its own axis; a supporting tube body, which is coaxially arranged in the rotating cylinder, and an installation gap is formed between the tube side wall surface of the supporting tube body and the tube inner wall surface of the rotating cylinder, and a sensing area is arranged on the tube side wall surface of the supporting tube body; a flexible film pressure sensor, which is arranged in the installation gap and covers the sensing area, and is used for obtaining the deformation degree and direction of the components connected to the rotating cylinder when subjected to the pressure applied by the rotating cylinder.

[0007] In one embodiment of the present invention, a driving component is further included, wherein a driving end of the driving component is connected to the rotating cylinder, and the driving component is used to drive the rotating cylinder to rotate around an axis relative to the supporting tube.

[0008] In one embodiment of the utility model, it also includes a control component, which is used to receive a feedback signal and stop the driving component; the flexible film pressure sensor is used to emit the feedback signal when the pressure applied by the rotating cylinder exceeds the warning pressure.

[0009] In an embodiment of the present invention, the sensing area completely covers the side wall surface of the supporting tube body.

[0010] In an embodiment of the present invention, the support tube body is hollow along the axial direction.

[0011] In one embodiment of the present invention, a data acquisition system is also included, and the data acquisition system is connected to the flexible film pressure sensor.

[0012] In one embodiment of the utility model, it further comprises a mixing cylinder and a scraping paddle component, wherein the scraping paddle component is connected to the rotating cylinder, and the scraping blade of the scraping paddle component abuts against the inner wall surface of the mixing cylinder.

[0013] In one embodiment of the present invention, a stirring paddle component is further included, and the stirring paddle component is connected to the rotating cylinder.

[0014] In one embodiment of the present invention, a dispersion disk component is further included, and the dispersion disk component is connected to the rotating cylinder.

[0015] The utility model also provides a battery, comprising battery slurry stirred by any one of the slurry stirring devices described above.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] The slurry stirring device described in the utility model includes a rotating cylinder, a supporting tube and a flexible film pressure sensor. The rotating cylinder is used to install stirring components such as scraping paddles and stirring paddles. At the same time, the rotating cylinder is hollow along the axial direction to facilitate the installation of other components inside the cylinder, thereby improving space utilization. Without increasing the size of the existing device, the supporting tube and the flexible film pressure sensor are used to increase the early warning function. During the production process, when the rotating cylinder is tilted or deformed by external forces, the inner wall surface of the rotating cylinder contacts the flexible film pressure sensor, and the staff can obtain the deformation degree and direction of the components connected to the rotating cylinder through the flexible film pressure sensor. It can effectively play a warning effect, which is convenient for the staff to check, repair and correct the deformation in time, thereby effectively improving the stability of the slurry stirring device in the production process, and avoiding the problem of reducing production efficiency and increasing production costs due to damage. It is particularly suitable for stirring battery slurry with high solid content during battery production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0019] Figure 1 This is one of the partial cross-sectional structural schematic diagrams of the slurry stirring device in the preferred embodiment of the utility model;

[0020] Figure 2 This is the second partial cross-sectional structural diagram of the slurry stirring device in the preferred embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the size relationship of the slurry stirring device in the preferred embodiment of the utility model;

[0022] Figure 4 This is the third partial cross-sectional structural diagram of the slurry stirring device in the preferred embodiment of the utility model;

[0023] Figure 5 This is one of the structural schematic diagrams of the support tube body in the preferred embodiment of the utility model;

[0024] Figure 6 This is the second structural schematic diagram of the support tube body in the preferred embodiment of the utility model;

[0025] Figure 7 This is the fourth partial cross-sectional structural diagram of the slurry stirring device in the preferred embodiment of the utility model;

[0026] Figure 8 It is a schematic diagram of the structure of a slurry stirring device in a preferred embodiment of the utility model.

[0027] Explanation of the reference numerals in the specification: 11. rotating cylinder; 12. supporting tube; 121. sensing area; 13. mounting gap; 14. flexible film pressure sensor; 20. driving component; 30. control component; 40. data acquisition system; 51. stirring cylinder; 52. scraping paddle component; 60. stirring paddle component; 70. dispersion disk component. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1 and Figure 2 As shown, the utility model discloses a slurry stirring device, which includes a rotating cylinder 11, a supporting tube 12 and a flexible film pressure sensor 14.

[0030] The rotating cylinder 11 is used to install corresponding stirring components, such as scraping paddles, stirring paddles, etc. The rotating cylinder 11 is hollow along the axial direction to facilitate the installation of other components inside the cylinder, thereby improving space utilization. Without increasing the size of the existing device, it is combined with the support tube 12 and the flexible film pressure sensor 14 to increase the early warning function. The rotating cylinder 11 can be rotated around its own axis. Those skilled in the art can choose different ways to realize its rotation around the axis according to actual needs, such as through motor and gear transmission, motor and synchronous belt transmission, etc.

[0031] The support tube body 12 is coaxially arranged in the rotating cylinder 11 to provide support for the rotating cylinder 11. An installation gap 13 is formed between the tube side wall surface of the support tube body 12 and the tube inner wall surface of the rotating cylinder 11. The installation gap 13 is reserved to facilitate the installation of the flexible film pressure sensor 14. Those skilled in the art can select the specific materials and dimensions of the rotating cylinder 11 and the support tube body 12 according to actual needs. Correspondingly, the size of the installation gap 13 can also be set according to actual needs to adapt to different models of flexible film pressure sensors 14 and meet the requirements of different deformation amounts of the rotating cylinder 11 under different operating environments. A sensing area 121 is provided on the tube side wall surface of the support tube body 12 for installing the flexible film pressure sensor 14.

[0032] The flexible film pressure sensor 14 is a prior art, and those skilled in the art can set different types of flexible film pressure sensors 14 according to actual detection requirements. The specific structure and working principle of the flexible film pressure sensor 14 will not be described in detail. The flexible film pressure sensor 14 is arranged in the installation gap 13, and the flexible film pressure sensor 14 is covered on the sensing area 121. The flexible film pressure sensor 14 is used to obtain the deformation degree and direction of the components connected to the rotating cylinder 11 when the pressure applied by the rotating cylinder 11 is applied. By setting the flexible film pressure sensor 14, during the production process, when the rotating cylinder 11 is tilted or deformed by an external force, the inner wall of the rotating cylinder 11 contacts the flexible film pressure sensor 14, and the staff can obtain the deformation degree and direction of the components connected to the rotating cylinder 11 through the flexible film pressure sensor 14. It can effectively play an early warning effect, which is convenient for the staff to check and repair the deformation in time, thereby effectively improving the stability of the slurry stirring device during the production process, and avoiding the problem of reducing production efficiency and increasing production costs due to damage.

[0033] In summary, the slurry stirring device described in the utility model includes a rotating cylinder 11, a supporting tube 12 and a flexible film pressure sensor 14. The rotating cylinder 11 is used to install stirring components such as scraping paddles and stirring paddles. At the same time, the rotating cylinder 11 is hollow along the axial direction to facilitate the installation of other components inside the cylinder, thereby improving space utilization. Without increasing the size of the existing device, the supporting tube 12 and the flexible film pressure sensor 14 are used to increase the early warning function. During the production process, when the rotating cylinder 11 is tilted or deformed by an external force, the inner wall surface of the rotating cylinder 11 contacts the flexible film pressure sensor 14, and the staff can obtain the deformation degree and direction of the components connected to the rotating cylinder 11 through the flexible film pressure sensor 14. It can effectively play a warning effect, which is convenient for the staff to check, repair and correct the deformation in time, thereby effectively improving the stability of the slurry stirring device in the production process, and avoiding the problem of reducing production efficiency and increasing production costs due to damage. It is particularly suitable for stirring battery slurry with high solid content during battery production.

[0034] Preferably, the support tube 12 can be assembled with the planetary propeller so that the rotating cylinder 11 can rotate while the planetary propeller can realize the revolution around the planetary axis of the planetary propeller. The planetary propeller is a prior art, and its specific structure and working principle are not described in detail. Figure 3 As shown, before actual use, the warning distance D is set according to the safe deformation test distance of the components actually connected to the rotating cylinder 11. In actual use, when the deformation reaches the warning distance D, a warning can be given in time, thereby avoiding irreversible damage such as the stirring paddle hitting the wall, effectively ensuring production stability and production efficiency.

[0035] Reference Figure 4 As shown, the slurry stirring device described in the utility model, in some embodiments, further includes a driving component 20, the driving end of the driving component 20 is connected to the rotating cylinder 11, and the driving component 20 is used to drive the rotating cylinder 11 to rotate around the axis relative to the supporting tube 12. By integrating the driving component 20, the rotation drive of the rotating cylinder 11 can be effectively realized, so that it is convenient to cooperate with the stirring component connected thereto for stirring. Those skilled in the art can select different driving components 20 according to actual needs, such as a combination of a motor and a gear, a combination of a motor and a synchronous belt, etc.

[0036] Further, see Figure 4 As shown, the slurry stirring device described in the utility model, in some embodiments, further includes a control component 30, which is used to receive feedback signals and stop the driving component 20. The flexible film pressure sensor 14 is used to transmit a feedback signal when the pressure applied by the rotating cylinder 11 exceeds the warning pressure. The control component 30 and how the flexible film pressure sensor 14 transmits feedback signals belong to the prior art, and those skilled in the art can set them according to actual needs, which will not be repeated. At the same time, those skilled in the art can also set the warning pressure according to different battery slurry stirring requirements, which will not be repeated. In the actual production process, when the rotating cylinder 11 is tilted or deformed by an external force, the inner wall of the rotating cylinder 11 contacts the flexible film pressure sensor 14 and applies pressure to the flexible film pressure sensor 14. When the pressure applied by the rotating cylinder 11 exceeds the warning pressure, the flexible film pressure sensor 14 can transmit a feedback signal to the control component 30. After receiving the feedback signal, the control component 30 stops the driving component 20 to prevent the device from being further damaged, thereby reducing the maintenance workload of the staff.

[0037] Reference Figure 5 and Figure 6 As shown, the slurry stirring device described in the utility model, those skilled in the art can set the position and size of the specific sensing area 121 according to actual needs to adapt to different stirring needs. In some embodiments, the sensing area 121 only covers part of the side wall of the support tube body 12 for targeted detection. In some embodiments, the sensing area 121 fully covers the side wall of the support tube body 12, and can detect the actual situation of the corresponding stirring component in real time. It is particularly suitable for stirring battery slurry with high solid content, which effectively ensures the high stirring quality and high production efficiency of the battery slurry.

[0038] Reference Figure 7As shown, in some embodiments of the slurry stirring device of the present invention, the support tube body 12 is hollowed in the axial direction. By setting the support tube body 12 hollow, the weight can be effectively reduced, thereby reducing energy consumption in the production process; and the bending resistance of the support tube body 12 can be increased, the support effect can be ensured, and the service life of the device can be extended.

[0039] Reference Figure 4 As shown, the slurry stirring device described in the utility model, in some embodiments, further includes a data acquisition system 40, and the data acquisition system 40 is connected to the flexible film pressure sensor 14. The data acquisition system 40 is a prior art. By setting up the data acquisition system 40, it is convenient for the staff to obtain the data of the flexible film pressure sensor 14 in real time, so as to understand the actual situation of the corresponding stirring component. It is also convenient for the staff to maintain or improve the device according to the data collected by the flexible film pressure sensor 14, so as to ensure the high stirring quality of the battery slurry and extend the service life of the device.

[0040] Reference Figure 8 As shown, the slurry stirring device described in the utility model, in some embodiments, also includes a stirring cylinder 51 and a scraper paddle component 52, the scraper paddle component 52 is connected to the rotating cylinder 11, and the scraper blade of the scraper paddle component 52 is in contact with the inner wall surface of the stirring cylinder 51. The stirring cylinder 51 is used to accommodate corresponding materials and provide a working space for the stirring production of battery slurry. The scraper paddle component 52 is used to scrape off the slurry attached to the cylinder wall surface of the stirring cylinder 51, so as to facilitate the full stirring and uniform mixing of the slurry. The stirring cylinder 51 and the scraper paddle component 52 are both prior arts, and those skilled in the art can set them according to actual needs, and no further description is given.

[0041] Reference Figure 8 As shown, the slurry stirring device described in the utility model, in some embodiments, further includes a stirring paddle component 60, and the stirring paddle component 60 is connected to the rotating cylinder 11. The stirring paddle component 60 is used to stir the materials so that the materials penetrate and knead each other to form battery slurry. The stirring paddle component 60 belongs to the prior art, and those skilled in the art can set it according to actual needs, and no further description is given.

[0042] Reference Figure 8 As shown, the slurry stirring device described in the utility model, in some embodiments, further includes a dispersion disk component 70, and the dispersion disk component 70 is connected to the rotating cylinder 11. The dispersion disk component 70 is used to disperse the slurry, thereby improving the mixing quality of the battery slurry. The dispersion disk component 70 belongs to the prior art, and those skilled in the art can set it according to actual needs, and will not be repeated.

[0043] The utility model discloses a battery, including battery slurry stirred by the slurry stirring device described in any one of the above embodiments. Those skilled in the art can select square batteries, cylindrical batteries, etc. according to actual needs, and no further description is given.

[0044] Working principle:

[0045] In the mixing production process of battery slurry, take the dispersion disk component 70 as an example. When the dispersion disk component 70 is deformed by external force, the rotating cylinder 11 connected to the dispersion disk component 70 will touch the flexible film pressure sensor 14. When the flexible film pressure sensor 14 is subjected to a pressure exceeding the warning value by the rotating cylinder 11, the flexible film pressure sensor 14 transmits a feedback signal to the control component 30. After receiving the feedback signal, the control component 30 stops the driving component 20 to prevent further damage to the device. At the same time, the staff can also obtain the status of the dispersion disk component 70 through the data acquisition system 40 in time, and go to the production station for confirmation and maintenance in time.

[0046] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A slurry stirring device, characterized in that: include: A rotating cylinder (11), wherein the rotating cylinder (11) is hollow along the axial direction and can rotate around its own axis; A support tube body (12), the support tube body (12) being coaxially arranged in the rotating cylinder (11), a mounting gap (13) being formed between a tube side wall surface of the support tube body (12) and a cylinder inner wall surface of the rotating cylinder (11), and a sensing area (121) being arranged on the tube side wall surface of the support tube body (12); A flexible film pressure sensor (14), wherein the flexible film pressure sensor (14) is arranged in the installation gap (13) and the flexible film pressure sensor (14) covers the sensing area (121), and the flexible film pressure sensor (14) is used to obtain the degree and direction of deformation of the component connected to the rotating cylinder (11) when the pressure applied by the rotating cylinder (11) is applied.

2. The slurry stirring device according to claim 1, characterized in that: It also comprises a driving component (20), wherein a driving end of the driving component (20) is connected to the rotating cylinder (11), and the driving component (20) is used to drive the rotating cylinder (11) to rotate around an axis relative to the supporting tube (12).

3. The slurry stirring device according to claim 2, characterized in that: It also includes a control component (30), wherein the control component (30) is used to receive a feedback signal and stop the driving component (20); The flexible film pressure sensor (14) is used to transmit the feedback signal when the pressure applied by the rotating cylinder (11) exceeds the warning pressure.

4. The slurry stirring device according to claim 1, characterized in that: The sensing area (121) completely covers the side wall surface of the supporting tube body (12).

5. The slurry stirring device according to claim 1, characterized in that: The support tube body (12) is hollow in the axial direction.

6. The slurry stirring device according to claim 1, characterized in that: It also includes a data acquisition system (40), which is connected to the flexible film pressure sensor (14).

7. The slurry stirring device according to claim 1, characterized in that: It also comprises a mixing cylinder (51) and a wall scraping paddle component (52), wherein the wall scraping paddle component (52) is connected to the rotating cylinder (11), and the wall scraping blade of the wall scraping paddle component (52) abuts against the inner wall surface of the mixing cylinder (51).

8. The slurry stirring device according to claim 1, characterized in that: It also includes a stirring paddle component (60), and the stirring paddle component (60) is connected to the rotating cylinder (11).

9. The slurry stirring device according to claim 1, characterized in that: It also includes a dispersion disk component (70), and the dispersion disk component (70) is connected to the rotating cylinder (11).

10. A battery, characterized in that: The invention comprises a battery slurry stirred by the slurry stirring device according to any one of claims 1 to 9.

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