Search

CN-119500495-B - Coating system and coating method

CN119500495BCN 119500495 BCN119500495 BCN 119500495BCN-119500495-B

Abstract

The application discloses a system and a coating method, wherein the coating system adopts a driving device to drive a material to move from an unreeling device to a reeling device, adopts acquisition equipment to acquire material parameters of the material, predicts the reeling moment of the material by a control device, and stores the material parameters into a film form corresponding to the material at the reeling moment. Because the material parameters of the material are stored at the winding time based on the material, the material parameters of the material stored before the material is wound by the coating winding device can be greatly reduced, and the situation that the film roll sheet is inconsistent with the film roll is caused.

Inventors

  • ZHAN BINGYANG
  • ZHANG JINGDONG

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260505
Application Date
20230822

Claims (13)

  1. 1. The coating system is characterized by comprising an unreeling device, a driving device, acquisition equipment, a reeling device and a control device; The driving device is used for driving the unreeling material placed by the unreeling device to move towards the reeling device, and the reeling device is used for reeling the material; the collecting equipment is used for collecting material parameters of the materials passing through the collecting equipment; the control device is used for predicting the rolling time when the material is rolled by the rolling device based on coating process parameters, and storing the material parameters acquired from the acquisition equipment into a film form corresponding to the material at the rolling time.
  2. 2. The coating system of claim 1, wherein the control device comprises an upper computer and a lower computer; The lower computer is used for acquiring driving parameters of the driving device and transmitting the driving parameters to the upper computer; The upper computer is used for acquiring the material parameters from the acquisition equipment, predicting the rolling time when the material is rolled by the rolling device based on the driving parameters and the preconfigured distance parameters, and storing the material parameters to the film form corresponding to the material at the rolling time, wherein the distance parameters are used for indicating the transmission distance between the acquisition equipment and the rolling device.
  3. 3. The coating system of claim 2, wherein the host computer is configured to: Based on the driving parameter and the distance parameter, predicting the transmission time required by the material to be transmitted from the acquisition equipment to the winding device; And calculating the winding time based on the transmission time and the collection time of the material parameters collected by the collection equipment.
  4. 4. A coating system according to claim 3, wherein the host computer is configured to: Calculating the target distance of the material to be transmitted in each rotation speed acquisition period based on the rotation speed acquisition period included in the driving parameters and the rotation speeds acquired in each rotation speed acquisition period; calculating accumulated acquisition times based on the target distance and the distance parameter; and calculating the product of the accumulated acquisition times and the rotating speed acquisition period to obtain the transmission duration.
  5. 5. The coating system of any one of claims 1-4, wherein the coating system further comprises: The cutter device is used for determining that the current reel changing condition is met and cutting off the materials passing through the cutter device; the control device is also used for controlling the winding device to be switched to a new winding drum, and creating a film form corresponding to the new winding drum.
  6. 6. The coating system of any one of claims 1-4, further comprising a coating apparatus comprising a coating die and a coating oven; a coating die for coating the material passing through the coating die; and a coating oven for baking the material coated by the coating die.
  7. 7. A coating method applied to the coating system of any one of claims 1 to 6, the method comprising: based on coating technological parameters, predicting the winding time when the material is wound by the winding device through the control device; and at the winding time, storing the material parameters of the materials acquired by the acquisition equipment into a film form corresponding to the materials through the control device.
  8. 8. The coating method according to claim 7, wherein the control device comprises an upper computer and a lower computer, and predicting the winding time of the material wound by the winding device based on the coating process parameters comprises: The driving parameters of the driving device are obtained through the lower computer, and the driving parameters are transmitted to the upper computer; the material parameters acquired by the acquisition equipment are acquired through the upper computer, the rolling time when the material is rolled by the rolling device is predicted based on the driving parameters and the preconfigured distance parameters, the material parameters are stored in a film form corresponding to the material at the rolling time, and the distance parameters are used for indicating the transmission distance between the acquisition equipment and the rolling device.
  9. 9. The coating method according to claim 8, wherein the step of obtaining, by the host computer, the material parameter collected by the collection device, and predicting a winding time at which the material is wound by the winding device based on the driving parameter and a preconfigured distance parameter, includes: Based on the driving parameters and the distance parameters, predicting the transmission time required by the materials to be transmitted from the collecting equipment to the winding device through the upper computer; And calculating the winding time by the upper computer based on the transmission time and the acquisition time of the material parameters acquired by the acquisition equipment.
  10. 10. The coating method according to claim 9, wherein predicting, by the upper computer, a transfer duration required for transferring the material from the collecting device to the winding device based on the driving parameter and the distance parameter, includes: Calculating the target distance of the material to be transmitted in each rotation speed acquisition period based on the rotation speed acquisition period included in the driving parameters and the rotation speeds acquired in each rotation speed acquisition period; calculating accumulated acquisition times based on the target distance and the distance parameter; and calculating the product of the accumulated acquisition times and the rotating speed acquisition period to obtain the transmission duration.
  11. 11. A coating method characterized by a control device applied in the coating system according to any one of claims 1-6, the method comprising: Predicting the winding time when the material is wound by the winding device based on coating process parameters; And storing the material parameters of the materials acquired from the acquisition equipment into a film form corresponding to the materials at the winding time.
  12. 12. The coating method according to claim 11, wherein predicting a winding time at which the material is wound by the winding device based on coating process parameters comprises: Predicting a transmission time length required for the material to be transmitted from the acquisition equipment to the winding device based on the driving parameters acquired from the driving device and a preconfigured distance parameter, wherein the distance parameter is used for indicating the distance between the acquisition equipment and the winding device; And calculating the winding time based on the transmission time and the acquisition time of the material parameters acquired from the acquisition equipment.
  13. 13. The coating method according to claim 12, wherein predicting a transfer duration required for the material to be transferred from the collecting device to the winding device based on the driving parameter obtained from the driving device and a preconfigured distance parameter, comprises: Calculating the target distance of the material to be transmitted in each rotation speed acquisition period based on the rotation speed acquisition period included in the driving parameters and the rotation speeds acquired in each rotation speed acquisition period; calculating accumulated acquisition times based on the target distance and the distance parameter; and calculating the product of the accumulated acquisition times and the rotating speed acquisition period to obtain the transmission duration.

Description

Coating system and coating method Technical Field The application relates to the field of coating, in particular to a coating system and a coating method. Background The electrode plate is the basis of the power battery, and influences the electrochemical performance and the safety of the power battery. Electrode tabs typically include a current collector and a coating applied to the current collector, and currently electrode tabs are typically prepared by a tab coating process that applies a slurry to the current collector and dries an organic solvent in the slurry. The electrode sheet can be expressed in the form of film rolls in the preparation process, each film roll is provided with a unique corresponding film form, and the material parameters of the film roll are recorded in the film form. The problem of inconsistent data in the film roll and the film roll sheet is often present. The statements made above merely serve to provide background information related to the present disclosure and may not necessarily constitute prior art. Disclosure of Invention In view of the foregoing, embodiments of the present application provide a system and a coating method to reduce the degree of data inconsistency between a film roll and a film roll sheet in a coating process. In a first aspect, the application provides a coating system, comprising an unreeling device, a driving device, acquisition equipment, a reeling device and a control device; The driving device is used for driving the unreeling material placed by the unreeling device to move towards the reeling device, and the reeling device is used for reeling the material; the collecting equipment is used for collecting material parameters of the materials passing through the collecting equipment; the control device is used for predicting the rolling time when the material is rolled by the rolling device based on coating process parameters, and storing the material parameters acquired from the acquisition equipment into a film form corresponding to the material at the rolling time. In the scheme provided by the embodiment, because the material parameters of the material are stored at the rolling moment based on the material, the material parameters of the stored material before the material is rolled by the coating rolling device can be greatly reduced, and the situation that the film roll list is inconsistent with the film roll is caused. In some embodiments, the control device comprises an upper computer and a lower computer; The lower computer is used for acquiring driving parameters of the driving device and transmitting the driving parameters to the upper computer; The upper computer is used for acquiring the material parameters from the acquisition equipment, predicting the rolling time when the material is rolled by the rolling device based on the driving parameters and the preconfigured distance parameters, and storing the material parameters to the film form corresponding to the material at the rolling time, wherein the distance parameters are used for indicating the transmission distance between the acquisition equipment and the rolling device. In the scheme provided by the embodiment, the control device in the coating system is jointly realized by adopting the upper computer and the lower computer, and the upper computer and the lower computer interact with different devices in the coating system respectively, so that the reliability of the control device is improved. In some embodiments, the host computer is configured to: Based on the driving parameter and the distance parameter, predicting the transmission time required by the material to be transmitted from the acquisition equipment to the winding device; And calculating the winding time based on the transmission time and the collection time of the material parameters collected by the collection equipment. In the scheme provided by the embodiment, the transmission time length from the acquisition equipment to the winding device is calculated, so that the winding time is calculated, and the accuracy of the determined winding time can be improved. In some embodiments, the host computer is configured to: Calculating the target distance of the material to be transmitted in each rotation speed acquisition period based on the rotation speed acquisition period included in the driving parameters and the rotation speeds acquired in each rotation speed acquisition period; calculating accumulated acquisition times based on the target distance and the distance parameter; and calculating the product of the accumulated acquisition times and the rotating speed acquisition period to obtain the transmission duration. In the scheme provided by the embodiment, the accumulated acquisition period is calculated through a plurality of rotation speed acquisition periods and rotation speeds in each acquisition period, and then the transmission time length is calculated. The calculation mode considers the condition that th