Electrode rolling apparatus and electrode rolling method
AssigneeLG Energy Solution, Ltd.
InventorsHwan Han Kim, Jeong Soo Seol
Life of this patent
Estimating the term…
Abstract
An electrode rolling apparatus includes a rolling roll that rolls an electrode substrate, and a rolling roll cooling unit that supplies a cooling medium to the inside of a rolling roll to cool the rolling roll, wherein the cooling medium transferred through the rolling roll cooling unit flows through the outer portion of the rolling roll.
Claims4
An electrode rolling apparatus comprising:
- a rolling roll that rolls an electrode substrate,
- a rolling roll cooling unit that supplies a cooling medium to an inside of the rolling roll to cool the rolling roll,
- a contact-less rolling roll temperature measuring unit located outside and adjacent to an exterior surface of the rolling roll,
- an emissivity amplifier configured to compensate for changing emissivity of the exterior surface of the rolling roll, and
- a cooling medium flow rate control unit configured to control a flow rate of the cooling medium so that a surface temperature of the rolling roll measured through the rolling roll temperature measuring unit is maintained within a preset distribution range,
- wherein the cooling medium transferred through the rolling roll cooling unit flows through an outer portion of the rolling roll,
- wherein the rolling roll cooling unit comprises:
- an inlet and an outlet disposed outside the rolling roll to provide a flow path of the cooling medium;
- a refrigerant pipe communicating with the inlet and the outlet and passing through a central part of the rolling roll;
- a plurality of inner pipes formed by perforating the inside of the rolling roll along the outer portion of the rolling roll, through which the cooling medium flows;
- and
- a connection pipe connecting the refrigerant pipe and the plurality of inner pipes.
An electrode rolling method that rolls an electrode substrate including an electrode current collector layer and a coating part formed on one or both surfaces of the electrode current collector layer using a rolling roll, the method comprising the steps of:
- cooling an outer portion of the rolling roll,
- measuring a surface temperature of the rolling roll using a contact-less rolling roll temperature measuring unit located outside and adjacent to an exterior surface of the rolling roll while compensating for changing emissivity of the exterior surface of the rolling roll using an emissivity amplifier, and
- controlling a flow rate of a cooling medium flowing through the outer portion of the rolling roll to maintain the surface temperature of the rolling roll within a preset distribution range,
- wherein the step of cooling the outer portion of the rolling roll includes allowing the cooling medium to flow through a plurality of inner pipes formed by perforating the inside of the rolling roll along the outer portion of the rolling roll, and
- wherein the cooling medium flowing through the plurality of inner pipes is supplied from a refrigerant pipe passing through a center part of the rolling roll through a connection pipe connecting the refrigerant pipe and the plurality of inner pipes.
Dependencies are inferred from the claim text.