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JP-7855878-B2 - Electrode manufacturing apparatus, electrode manufacturing method, electrochemical element manufacturing apparatus, and electrochemical element manufacturing method

JP7855878B2JP 7855878 B2JP7855878 B2JP 7855878B2JP-7855878-B2

Inventors

  • 山澤 亞也

Assignees

  • 株式会社リコー

Dates

Publication Date
20260511
Application Date
20220315

Claims (9)

  1. An electrode manufacturing apparatus, A dispensing unit that applies a liquid composition capable of forming an insulating layer on an electrode substrate or on a functional layer provided on an electrode substrate, A granting control unit that controls the granting unit, The system includes a surface detection unit for detecting the surface state of the applied liquid composition or an insulating layer formed by the applied liquid composition, The application control unit increases the amount of the liquid composition applied by the application unit by changing the application pattern without changing the print resolution, based on the surface state detected by the surface detection unit. An electrode manufacturing apparatus characterized by the following features.
  2. In the electrode manufacturing apparatus according to claim 1, An electrode manufacturing apparatus characterized in that the insulating layer is a resin layer .
  3. In the electrode manufacturing apparatus according to claim 1, An electrode manufacturing apparatus characterized in that the insulating layer is an inorganic layer .
  4. An electrode manufacturing apparatus according to any one of claims 1 to 3, The information based on the surface state detected by the surface detection unit is information based on defects. The electrode manufacturing apparatus is characterized in that the dispensing control unit increases the amount of the liquid composition dispensed from the dispensing unit.
  5. In the electrode manufacturing apparatus according to claim 4, An electrode manufacturing apparatus characterized in that the information based on the defect is information regarding the location of the defect.
  6. An electrode manufacturing apparatus according to any one of claims 1 to 5, The electrode manufacturing apparatus is characterized in that the dispensing control unit gradually increases the amount of the liquid composition dispensed from the dispensing unit.
  7. A method for manufacturing electrodes, A step of applying a liquid composition capable of forming an insulating layer on an electrode substrate or on a functional layer provided on an electrode substrate, A dispensing control step for controlling the dispensing of the liquid composition , The system includes a surface detection step for detecting the surface state of the applied liquid composition or an insulating layer formed by the applied liquid composition, The application control step increases the amount of the liquid composition applied in the application step by changing the application pattern without changing the print resolution, based on the surface state detected in the surface detection step. A method for manufacturing electrodes characterized by the following features.
  8. A manufacturing apparatus for electrochemical elements equipped with electrodes, A dispensing unit that applies a liquid composition capable of forming an insulating layer on an electrode substrate or on a functional layer provided on an electrode substrate, A granting control unit that controls the granting unit, The system includes a surface detection unit for detecting the surface state of the applied liquid composition or an insulating layer formed by the applied liquid composition, The application control unit increases the amount of the liquid composition applied by the application unit by changing the application pattern without changing the print resolution, based on the surface state detected by the surface detection unit. An electrochemical element manufacturing apparatus equipped with electrodes characterized by the above.
  9. A method for manufacturing an electrochemical element equipped with electrodes, A step of applying a liquid composition capable of forming an insulating layer on an electrode substrate or on a functional layer provided on an electrode substrate, A dispensing control step for controlling the dispensing of the liquid composition , The system includes a surface detection step for detecting the surface state of the applied liquid composition or an insulating layer formed by the applied liquid composition, The application control step increases the amount of the liquid composition applied in the application step by changing the application pattern without changing the print resolution, based on the surface state detected in the surface detection step. A method for manufacturing an electrochemical element comprising an electrode characterized by the above.

Description

This disclosure relates to an electrode manufacturing apparatus, an electrode manufacturing method, an electrochemical element manufacturing apparatus, and a method for manufacturing an electrochemical element. Examples of electrochemical elements include lithium-ion secondary batteries, electric double-layer capacitors, lithium-ion capacitors, and redox capacitors. Among these, secondary batteries, which can be repeatedly charged and discharged, have particularly strong requirements regarding safety and reliability due to their applications. These safety and reliability requirements also apply to the electrodes of electrochemical elements. Strict manufacturing quality control is necessary during the manufacturing process to prevent problems such as ignition. Therefore, the manufacturing quality of the electrodes, which are the material for electrochemical elements, must also be maintained accordingly. Patent Document 1 discloses a method for manufacturing a secondary battery, which includes a position information acquisition step for acquiring identification information of the electrode material to be used in assembly and the position of the portion of the electrode material intended for use; a quality information acquisition step for acquiring quality information of the portion of the electrode material intended for use based on the acquired identification information and position; and a portion determination step for determining the portion of the electrode material actually to be used in assembly based on the acquired quality information. This is an example of an overall configuration diagram of the electrode manufacturing apparatus according to this embodiment.This is a functional block diagram of the electrode manufacturing apparatus and the electrode manufacturing apparatus control unit.This is a hardware configuration diagram of the electrode manufacturing apparatus control unit according to this embodiment.A flowchart illustrating an example of the discharge volume control process.This is a conceptual diagram of the formation of an insulating layer by the discharge of a liquid composition.This is a plan view of an electrode manufacturing apparatus illustrating how streaky defects occur.This is another example of the overall configuration diagram of the electrode manufacturing apparatus according to this embodiment.This is an example of an optical system for a surface detection unit.This is an example of the detection result from the surface detection unit.This is a flowchart for defect detection.This is a flowchart for adjusting the discharge volume based on the output of defect location information.This is one example of a method for adjusting the discharge volume.This is a flowchart showing a method for adjusting the discharge volume in stages. In the electrode manufacturing apparatus of the present invention, a surface detection unit detects the surface state of the insulating layer after the application of the liquid composition during the electrode manufacturing process, and the application control unit can control the application unit based on the detected surface state. The electrode manufacturing apparatus of the present invention will be described in detail below with reference to the drawings. <<Electrode manufacturing device 1>> (Overall structure) Figure 1 is an example of an overall configuration diagram of the electrode manufacturing apparatus according to this embodiment. As shown in Figure 1, the electrode manufacturing apparatus 1 of this embodiment consists of a winding unit 10 and a winding unit 11, which are responsible for conveying the material; a discharge unit 5, which is an example of a liquid composition application unit; a curing device 6; a heater 7; a surface detection unit 8; an electrode substrate 9; a functional layer 12 provided on the electrode substrate; and a system control unit 3. Details of the system control unit 3 will be described separately. Figure 1 shows the interior of the electrode manufacturing apparatus 1, viewed from a direction Y perpendicular to the transport direction X of the electrode substrate, which is the material to be extruded. The surface detection unit 8 is positioned downstream in the transport direction, which is the direction in which the material to be dispensed, from which the liquid composition has been dispensed by the dispensing unit 5, is transported. The order in which the surface detection unit 8 is positioned relative to the curing device 6 and heater 7 is not restricted. This electrode manufacturing apparatus 1 uses a liquid composition 24, which is a material for forming an insulating layer 21 (a resin layer 22 or an inorganic layer 23), to form an insulating layer 21 (a resin layer 22 or an inorganic layer 23) that covers the surface of the electrode substrate 9 or the functional layer 12 provided on the electrode substrate. A surface detection unit 8, located downstream of the discharge unit 5, detects the surface state of