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CN-122015742-A - Electrode sheet loss detection method, electronic device, and computer-readable storage medium

CN122015742ACN 122015742 ACN122015742 ACN 122015742ACN-122015742-A

Abstract

The application discloses an electrode slice loss detection method, electronic equipment and a computer readable storage medium, wherein the length of an electrode slice in each preparation procedure is determined in the preparation process of the electrode slice; and then determining the tail length of the electrode plate in each preparation process according to the length of each section and the fixed consumption length of the electrode plate in each preparation process, and further determining the consumption data of the electrode plate preparation according to the tail length. The application can improve the accuracy of electrode slice loss detection in the battery preparation process on the premise of not modifying the production line.

Inventors

  • TANG MIAO
  • WANG ZHEN

Assignees

  • 惠州亿纬锂能股份有限公司

Dates

Publication Date
20260512
Application Date
20251226

Claims (13)

  1. 1. The electrode slice loss detection method is characterized by comprising the following steps of: Determining the length of an interval corresponding to each preparation procedure of the electrode plate in the preparation process of the electrode plate; Determining the tail length of the electrode plate in each preparation process according to the length of each section and the fixed consumption length of the electrode plate in each preparation process; and determining loss data prepared by the electrode plates according to the lengths of the tails.
  2. 2. The method of claim 1, wherein the fixed consumption length comprises a tail length and a butt length, wherein the determining the tail length of the electrode sheet in each of the manufacturing processes based on each of the section lengths and the fixed consumption length of the electrode sheet in each of the manufacturing processes comprises: determining the tail length of the second procedure according to the winding length of the electrode plate in the first procedure, the tape connecting length between the first procedure and the second procedure and the unreeling length of the second procedure; wherein the preparation sequence of the second process is after the first process and is adjacent to the first process.
  3. 3. The method according to claim 1, wherein the method further comprises: Compensating the interval length of the electrode plate in each preparation process according to length compensation data to obtain compensated interval length, wherein the length compensation data comprises at least one of installation offset data, coiled material tension data and coiled material slippage data; The determining the tail length of the electrode plate in each preparation process according to the interval length and the fixed consumption length of the electrode plate in each preparation process comprises the following steps: And determining the tail length of the electrode plate in each preparation process according to the interval length after the compensation of each preparation process and the fixed consumption length of the electrode plate in each preparation process.
  4. 4. The method according to claim 1, wherein the method further comprises: And mapping sensor data in each interval length of the electrode slice so as to be associated with the loss data prepared by the electrode slice, wherein the sensor data comprises at least one of tension sensor data, thickness sensor data and weight sensor data.
  5. 5. The method of claim 1, wherein said determining loss data for the electrode sheet preparation based on each of said tail lengths comprises: correlating the length of each tail with the length of the interval to obtain the process loss of the electrode plate in each preparation process; and obtaining loss data of the electrode plate preparation according to the process loss of the electrode plate in all preparation processes.
  6. 6. The method according to claim 1, wherein the method further comprises: determining the broken belt length of the electrode plate in the preparation process; Determining loss data prepared by the electrode plate according to the length of each tail material, wherein the loss data comprises the following steps: and determining loss data prepared by the electrode plate according to the tail length and the broken belt length.
  7. 7. The method of claim 6, wherein determining the broken length of the electrode sheet during the manufacturing process comprises: Recording the tape length of the electrode plate in each preparation procedure; Under the condition that a broken tape signal is detected, clearing the tape length of the broken tape signal corresponding to a target preparation procedure, and respectively acquiring a first tape length set of other preparation procedures; controlling the target preparation process to restart recording the tape length of the electrode sheet in response to a re-tape signal; after the preset time, acquiring a second deck length set recorded by the other preparation procedures; and obtaining the broken tape length according to the first tape length set and the second tape length set.
  8. 8. The method of claim 7, wherein the deriving the break length from the first set of run lengths and the second set of run lengths comprises: Determining a first deck length value corresponding to the first deck length set in the same preparation process and a second deck length value corresponding to the second deck length set; and obtaining the broken tape length according to the first tape length value and the second tape length value.
  9. 9. The method according to claim 1, wherein the method further comprises: obtaining a correction coefficient of the loss data according to the quality data in the electrode slice preparation process; And correcting the loss data according to the correction coefficient to obtain corrected loss data.
  10. 10. The method of claim 7, wherein the obtaining the correction factor for the loss data based on the quality data during the electrode sheet preparation process comprises: And determining the correction coefficient according to the first mass of the electrode plate before preparation, the second mass of the electrode plate after preparation and the third mass detected by the unit length of the electrode plate.
  11. 11. The method according to any one of claims 1 to 10, further comprising: And outputting the loss data prepared by the electrode plate according to a preset format.
  12. 12. An electronic device, comprising: at least one processor, and A memory communicatively coupled to the at least one processor, wherein, The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the steps of the method of any one of claims 1-11.
  13. 13. A computer readable storage medium, having stored thereon a computer program or instructions, which are loaded by a processor to perform the steps in the method of any of claims 1-11.

Description

Electrode sheet loss detection method, electronic device, and computer-readable storage medium Technical Field The application relates to the technical field of lithium battery manufacturing, in particular to an electrode slice loss detection method, electronic equipment and a computer readable storage medium. Background The electrode plate of the lithium ion battery is manufactured by adopting a roll-to-roll continuous production process, which comprises a plurality of procedures of coating, drying, rolling, slitting, roll cutting and the like. In the manufacturing process of lithium-ion batteries, there may be a loss of electrode sheets, such as a loss of electrode sheets, which is necessarily occurred in the manufacturing process, or an abnormal loss due to manufacturing abnormality or malfunction. The loss data of the electrode plate preparation can influence the energy density of the lithium ion battery and the consistency of the battery, so that the production cost of the lithium ion battery is increased. How to improve the accuracy of electrode plate loss data detection in the battery preparation process is a technical problem which is solved in the industry at present. Disclosure of Invention The application provides an electrode slice loss detection method, electronic equipment and a computer readable storage medium, aiming at improving the detection accuracy of electrode slice loss in the battery preparation process so as to at least partially solve the technical problems. In a first aspect, an embodiment of the present application provides an electrode slice loss detection method, including determining a section length of an electrode slice corresponding to each preparation process in a preparation process of the electrode slice, determining a tail length of the electrode slice in each preparation process according to each section length and a fixed consumption length of the electrode slice in each preparation process, and determining loss data prepared by the electrode slice according to each tail length. The method comprises the steps of determining the tail length of an electrode sheet in each preparation process according to the length of each preparation section and the fixed consumption length of the electrode sheet in each preparation process, wherein the method comprises the step of determining the tail length of a second process according to the winding length of the electrode sheet in the first process, the length of a connecting strip between the first process and the second process and the unreeling length of the second process, and the preparation sequence of the second process is after the first process and adjacent to the first process. Optionally, the method further comprises the step of compensating the interval length of the electrode plate in each preparation process according to length compensation data to obtain compensated interval length, wherein the length compensation data comprise at least one of installation offset data, coil tension data and coil slippage data, the step of determining the tail length of the electrode plate in each preparation process according to each interval length and the fixed consumption length of the electrode plate in each preparation process comprises the step of determining the tail length of the electrode plate in each preparation process according to each interval length after compensation in each preparation process and the fixed consumption length of the electrode plate in each preparation process. Optionally, the method further comprises mapping sensor data in each of the interval lengths of the electrode sheets to be associated with loss data prepared by the electrode sheets, wherein the sensor data comprises at least one of tension sensor data, thickness sensor data and weight sensor data. Optionally, determining the loss data of the electrode sheet preparation according to the length of each tail material includes associating the length of each tail material with the length of each section to obtain the process loss of the electrode sheet in each preparation process, and obtaining the loss data of the electrode sheet preparation according to the process loss of the electrode sheet in all preparation processes. Optionally, the method further comprises the steps of determining the broken belt length of the electrode plate in the preparation process, and determining the loss data of the electrode plate preparation according to the tail lengths, wherein the step of determining the loss data of the electrode plate preparation according to the tail lengths and the broken belt lengths. The method comprises the steps of determining the tape breaking length of an electrode plate in the preparation process, recording the tape breaking length of the electrode plate in each preparation process, clearing the tape breaking length of the electrode plate corresponding to a target preparation process under the condition that a tape breaking signal is d